/* roulang page: index */
:root{
  --bg-0:#050A14;
  --bg-1:#0B1524;
  --bg-2:#101D31;
  --bg-3:#16253D;
  --brand:#2C5BFF;
  --brand-soft:#6E8FFF;
  --brand-glow:rgba(44,91,255,.45);
  --accent:#FF7A3D;
  --accent-glow:rgba(255,122,61,.42);
  --mint:#35E2C0;
  --text-1:#EAF1FF;
  --text-2:#A8B8D4;
  --text-3:#6B7C9B;
  --line-1:rgba(126,170,255,.14);
  --line-2:rgba(126,170,255,.28);
  --glass:linear-gradient(160deg,rgba(20,34,58,.86),rgba(11,21,36,.74));
  --r-lg:18px;
  --r-xl:22px;
  --r-sm:14px;
  --r-btn:12px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.9);
  --shadow-hover:0 24px 56px -22px rgba(0,0,0,.95);
  --ease:cubic-bezier(.2,.7,.3,1);

  --bs-primary:#2C5BFF;
  --bs-primary-rgb:44,91,255;
  --bs-body-bg:#050A14;
  --bs-body-color:#EAF1FF;
  --bs-border-color:rgba(126,170,255,.14);
  --bs-link-color:#6E8FFF;
  --bs-link-hover-color:#EAF1FF;
  --bs-emphasis-color:#EAF1FF;
  --bs-secondary-color:#A8B8D4;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand-soft);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--text-1)}
button{font-family:inherit}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--text-1);font-weight:700;letter-spacing:0}
p{margin:0}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.container-wide{max-width:1320px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-primary-glow{
  background:linear-gradient(135deg,#3C6BFF,#2447D8);
  color:#fff;box-shadow:0 10px 30px -8px var(--brand-glow);
}
.btn-primary-glow:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 36px -10px var(--brand-glow)}
.btn-accent{
  background:linear-gradient(135deg,#FF9159,#F26322);
  color:#1A0C04;box-shadow:0 10px 30px -8px var(--accent-glow);
  animation:breath 3.2s var(--ease) infinite;
}
.btn-accent:hover{color:#1A0C04;transform:translateY(-2px)}
@keyframes breath{
  0%,100%{box-shadow:0 10px 30px -8px rgba(255,122,61,.42)}
  50%{box-shadow:0 12px 38px -6px rgba(255,122,61,.58)}
}
.btn-ghost{
  background:transparent;color:var(--text-1);border:1px solid var(--line-2);
}
.btn-ghost:hover{background:var(--bg-2);color:var(--text-1);border-color:var(--line-2)}
.btn[disabled],.btn.is-disabled{filter:saturate(.4);opacity:.7;pointer-events:none;animation:none}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-soft);
}
.link-more i{transition:transform .18s var(--ease)}
.link-more:hover i{transform:translateX(3px)}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(5,10,20,.72);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line-1);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(5,10,20,.9);
  box-shadow:0 16px 34px -22px #000;
}
.header-top{
  display:flex;align-items:center;gap:28px;
  height:76px;
  transition:height .24s var(--ease);
}
.site-header.is-scrolled .header-top{height:60px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(44,91,255,.9),rgba(20,38,90,.9));
  border:1px solid rgba(126,170,255,.34);
  box-shadow:0 0 0 1px rgba(255,255,255,.05) inset,0 8px 22px -12px var(--brand-glow);
  color:#fff;font-size:17px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.01em;color:var(--text-1)}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.14em}

.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px}
.main-nav .nav-link{
  position:relative;
  padding:8px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--text-2);
  transition:color .18s var(--ease),background .18s var(--ease);
  white-space:nowrap;
}
.main-nav .nav-link:hover{color:var(--brand-soft);background:rgba(44,91,255,.08)}
.main-nav .nav-link.active{color:var(--text-1);font-weight:600}
.main-nav .nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand);
  box-shadow:0 0 8px 2px var(--brand-glow);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  background:rgba(16,29,49,.75);border:1px solid var(--line-1);
  color:var(--text-2);cursor:pointer;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.icon-btn:hover{color:var(--text-1);border-color:var(--line-2);background:var(--bg-2)}
.hot-entry{
  display:inline-flex;align-items:center;gap:6px;
  height:40px;padding:0 16px;border-radius:12px;
  font-size:14px;font-weight:600;color:var(--mint);
  background:rgba(53,226,192,.1);
  border:1px solid rgba(53,226,192,.3);
}
.hot-entry:hover{color:var(--mint);background:rgba(53,226,192,.16)}
.burger{display:none}

/* 热词条 */
.trend-bar{border-top:1px solid var(--line-1);background:rgba(11,21,36,.6)}
.trend-inner{
  display:flex;align-items:center;gap:10px;
  height:44px;overflow-x:auto;scrollbar-width:none;
}
.trend-inner::-webkit-scrollbar{display:none}
.trend-label{
  flex:0 0 auto;font-size:12px;font-weight:700;letter-spacing:.12em;
  color:var(--accent);text-transform:uppercase;
}
.pill{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 13px;border-radius:999px;
  font-size:12.5px;color:var(--text-2);
  background:rgba(16,29,49,.85);
  border:1px solid var(--line-1);
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.pill:hover{color:var(--text-1);border-color:var(--line-2);background:var(--bg-2)}
.pill.is-active{
  color:var(--text-1);font-weight:600;
  background:rgba(44,91,255,.12);
  border-color:rgba(44,91,255,.55);
}

/* 搜索面板 */
.search-panel{
  position:absolute;left:0;right:0;top:100%;
  background:rgba(5,10,20,.96);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line-1);
  padding:22px 0 26px;
  display:none;
  box-shadow:0 24px 50px -30px #000;
}
.search-panel.open{display:block}
.search-field{display:flex;gap:10px}
.search-field input{
  flex:1;height:46px;border-radius:12px;
  background:var(--bg-3);border:1px solid var(--line-1);
  color:var(--text-1);font-size:15px;padding:0 16px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-field input::placeholder{color:var(--text-3)}
.search-field input:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(44,91,255,.22);
}
.search-labels{margin-top:16px;font-size:13px;color:var(--text-3)}
.search-pills{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:1080;
  background:rgba(4,8,15,.96);
  backdrop-filter:blur(16px);
  transform:translateX(100%);
  transition:transform .28s var(--ease);
  display:flex;flex-direction:column;
  padding:22px 24px 32px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-nav{display:flex;flex-direction:column;margin-top:12px}
.drawer-nav a{
  font-size:20px;font-weight:600;color:var(--text-1);
  padding:14px 0;border-bottom:1px solid var(--line-1);
}
.drawer-nav a.active{color:var(--brand-soft)}
.drawer-foot{margin-top:auto;padding-top:26px}

/* ---------- Hero ---------- */
.hero{position:relative;padding:64px 0 84px;overflow:hidden}
.hero::before,.hero::after{
  content:"";position:absolute;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(44,91,255,.18),rgba(44,91,255,0) 68%);
  pointer-events:none;
}
.hero::before{top:-180px;right:-120px}
.hero::after{bottom:-240px;left:-160px;opacity:.75}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;font-weight:700;
  color:var(--mint);text-transform:uppercase;margin-bottom:18px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--mint);display:inline-block}
.hero h1{
  font-size:46px;line-height:1.2;font-weight:800;letter-spacing:-.01em;
  margin-bottom:18px;
}
.hero-sub{font-size:16px;line-height:1.8;color:var(--text-2);max-width:460px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{display:flex;gap:34px;margin-top:38px;flex-wrap:wrap}
.hero-stats li{display:flex;flex-direction:column;gap:2px}
.hero-stats strong{
  font-size:24px;font-weight:800;color:var(--mint);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.hero-stats span{font-size:13px;color:var(--text-3)}

.hero-visual{display:flex;justify-content:flex-end}
.v-card{
  position:relative;width:100%;max-width:330px;aspect-ratio:9/16;
  border-radius:var(--r-xl);overflow:hidden;
  background:var(--bg-3);
  border:1px solid var(--line-2);
  box-shadow:var(--shadow-card),0 0 0 1px rgba(255,255,255,.04) inset;
}
.v-card>img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.v-card:hover>img{transform:scale(1.03)}
.v-card::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:120px;
  background:linear-gradient(180deg,rgba(5,10,20,0),rgba(5,10,20,.92));
  pointer-events:none;
}
.play-btn{
  position:absolute;left:50%;top:44%;transform:translate(-50%,-50%);
  width:64px;height:64px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(11,21,36,.66);
  border:1px solid rgba(126,170,255,.4);
  backdrop-filter:blur(10px);
  color:#fff;font-size:19px;cursor:pointer;
  box-shadow:0 0 0 8px rgba(44,91,255,.14),0 0 32px var(--brand-glow);
  transition:box-shadow .2s var(--ease),transform .2s var(--ease);
}
.play-btn:hover{transform:translate(-50%,-50%) scale(1.06);box-shadow:0 0 0 12px rgba(44,91,255,.18),0 0 40px var(--brand-glow)}
.dur-badge{
  position:absolute;top:14px;right:14px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  padding:3px 9px;border-radius:999px;
  background:rgba(5,10,20,.72);border:1px solid var(--line-1);
  color:var(--text-1);font-variant-numeric:tabular-nums;
}
.v-caption{
  position:absolute;left:0;right:0;bottom:0;z-index:3;
  padding:18px 18px 20px;
}
.v-caption p{
  font-size:15px;line-height:1.55;font-weight:700;color:var(--text-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.float-card{
  position:absolute;right:12px;bottom:88px;z-index:4;
  padding:10px 14px;border-radius:var(--r-sm);
  background:var(--glass);
  border:1px solid var(--line-1);
  backdrop-filter:blur(12px);
  box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;gap:2px;
}
.float-card span{font-size:11px;color:var(--text-3)}
.float-card strong{
  font-size:16px;font-weight:800;color:var(--mint);
  font-variant-numeric:tabular-nums;
}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line-1);border-bottom:1px solid var(--line-1)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:38px;flex-wrap:wrap;
}
.section-head h2{font-size:32px;line-height:1.25;font-weight:700;margin-bottom:8px}
.section-head p{font-size:15px;color:var(--text-2);max-width:640px}
.filter-pills{display:flex;flex-wrap:wrap;gap:8px}

/* 横向轨道 */
.rail{
  display:flex;gap:20px;overflow-x:auto;
  padding:4px 4px 10px;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none}
.rail-item{flex:0 0 232px;scroll-snap-align:start}
.rail-media{
  position:relative;width:100%;aspect-ratio:9/16;
  border-radius:var(--r-xl);overflow:hidden;
  background:var(--bg-3);border:1px solid var(--line-1);
  box-shadow:var(--shadow-card);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.rail-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rail-item:hover .rail-media{transform:translateY(-2px);border-color:var(--line-2);box-shadow:var(--shadow-hover)}
.rail-item:hover .rail-media img{transform:scale(1.03)}
.rail-media::after{
  content:"";position:absolute;inset:auto 0 0 0;height:70%;
  background:linear-gradient(180deg,rgba(5,10,20,0),rgba(5,10,20,.9));
}
.rail-play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(11,21,36,.7);border:1px solid rgba(126,170,255,.36);
  color:#fff;font-size:14px;backdrop-filter:blur(8px);
  box-shadow:0 0 20px var(--brand-glow);
}
.rail-dur{
  position:absolute;top:10px;right:10px;
  font-size:11.5px;font-weight:600;padding:2px 8px;border-radius:999px;
  background:rgba(5,10,20,.72);border:1px solid var(--line-1);color:var(--text-1);
  font-variant-numeric:tabular-nums;
}
.rail-title{
  position:absolute;left:12px;right:12px;bottom:12px;z-index:3;
  font-size:14px;line-height:1.5;font-weight:600;color:var(--text-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rail-meta{
  display:flex;align-items:center;gap:8px;
  margin-top:12px;font-size:12.5px;color:var(--text-3);
}
.rail-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3)}

/* 种草清单 */
.plant-grid{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:start}
.plant-list li{
  display:flex;gap:18px;align-items:flex-start;
  padding:20px 0;border-bottom:1px solid var(--line-1);
  transition:background .18s var(--ease);
}
.plant-list li:first-child{padding-top:0}
.plant-list li:last-child{border-bottom:none}
.plant-num{
  flex:0 0 40px;width:40px;height:40px;border-radius:50%;
  display:grid;place-items:center;
  font-size:13px;font-weight:800;color:var(--mint);
  border:1px solid rgba(53,226,192,.45);
  background:rgba(53,226,192,.07);
  font-variant-numeric:tabular-nums;
}
.plant-body h3{font-size:18px;line-height:1.5;font-weight:600;margin-bottom:4px}
.plant-body p{font-size:14px;line-height:1.75;color:var(--text-2)}
.plant-visual{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  aspect-ratio:4/3;background:var(--bg-3);
  border:1px solid var(--line-1);box-shadow:var(--shadow-card);
}
.plant-visual img{width:100%;height:100%;object-fit:cover}
.plant-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,10,20,0) 40%,rgba(5,10,20,.72));
}
.plant-tag{
  position:absolute;left:16px;bottom:16px;z-index:2;
  font-size:12px;font-weight:600;padding:5px 12px;border-radius:999px;
  color:var(--accent);background:rgba(255,122,61,.12);
  border:1px solid rgba(255,122,61,.4);
}

/* 口碑条 */
.review-rail{display:flex;gap:20px;overflow-x:auto;padding:4px 4px 12px;scrollbar-width:none;scroll-snap-type:x mandatory}
.review-rail::-webkit-scrollbar{display:none}
.review-card{
  flex:0 0 320px;scroll-snap-align:start;
  padding:22px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line-1);
  box-shadow:var(--shadow-card);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.review-card:hover{transform:translateY(-2px);border-color:var(--line-2);box-shadow:var(--shadow-hover)}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.avatar{
  width:44px;height:44px;border-radius:50%;flex:0 0 44px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(44,91,255,.55),rgba(16,29,49,.9));
  border:1px solid var(--line-2);font-size:15px;font-weight:700;color:#fff;
}
.review-name{font-size:15px;font-weight:600;color:var(--text-1)}
.stars{display:flex;gap:2px;color:var(--mint);font-size:11px;margin-top:2px}
.review-text{
  font-size:14.5px;line-height:1.8;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.review-time{font-size:13px;color:var(--text-3);margin-top:12px}

/* 转化条 */
.convert-bar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:26px 32px;border-radius:var(--r-lg);
  background:var(--glass);
  border:1px solid var(--line-2);
  box-shadow:var(--shadow-card),0 0 0 1px rgba(255,255,255,.04) inset;
}
.convert-bar h2{font-size:24px;font-weight:700;margin-bottom:6px}
.convert-bar p{font-size:14.5px;color:var(--text-2)}

/* CMS 列表 */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.post-card{
  display:flex;flex-direction:column;
  border-radius:var(--r-lg);overflow:hidden;
  background:var(--glass);border:1px solid var(--line-1);
  box-shadow:var(--shadow-card);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.post-card:hover{transform:translateY(-2px);border-color:var(--line-2);box-shadow:var(--shadow-hover)}
.post-media{position:relative;display:block;aspect-ratio:16/10;background:var(--bg-3);overflow:hidden}
.post-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.post-card:hover .post-media img{transform:scale(1.03)}
.badge-cat{
  position:absolute;top:12px;left:12px;z-index:2;
  font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;
  color:var(--brand-soft);background:rgba(44,91,255,.16);
  border:1px solid rgba(44,91,255,.5);
  backdrop-filter:blur(6px);
}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-title{
  font-size:18px;line-height:1.5;font-weight:700;color:var(--text-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-title:hover{color:var(--brand-soft)}
.post-excerpt{
  font-size:15px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line-1);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--text-3);
}
.post-foot .link-more{font-size:13px}

/* 空态 */
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:10px;text-align:center;padding:40px 20px;
  border-radius:var(--r-lg);background:var(--glass);
  border:1px dashed var(--line-2);
}
.empty-state i{font-size:48px;color:var(--text-3)}
.empty-state h3{font-size:16px;font-weight:600;color:var(--text-1)}
.empty-state p{font-size:14px;color:var(--text-2);max-width:420px}
.empty-state .btn{margin-top:8px}

/* FAQ */
.faq-acc .accordion-item{
  background:var(--glass);
  border:1px solid var(--line-1);
  border-radius:var(--r-sm);
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.faq-acc .accordion-item:last-child{margin-bottom:0}
.faq-acc .accordion-button{
  position:relative;
  background:transparent;color:var(--text-1);
  font-size:17px;font-weight:600;line-height:1.6;
  padding:20px 56px 20px 22px;
  box-shadow:none;border-radius:0;
}
.faq-acc .accordion-button:not(.collapsed){
  color:var(--text-1);
  background:rgba(44,91,255,.08);
  box-shadow:none;
}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq-acc .accordion-button::after{
  content:"";position:absolute;right:22px;top:50%;width:14px;height:14px;margin:0;
  transform:translateY(-50%);
  background:
    linear-gradient(var(--brand-soft),var(--brand-soft)) center/14px 2px no-repeat,
    linear-gradient(var(--brand-soft),var(--brand-soft)) center/2px 14px no-repeat;
  transition:transform .24s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(45deg)}
.faq-acc .accordion-body{
  font-size:15px;line-height:1.85;color:var(--text-2);
  padding:0 22px 20px;
}

/* 页脚 */
.site-footer{background:#04080F;border-top:1px solid var(--line-1);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-desc{font-size:14px;line-height:1.8;color:var(--text-2);max-width:280px}
.socials{display:flex;gap:10px;margin-top:20px}
.socials a{
  width:38px;height:38px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(16,29,49,.85);border:1px solid var(--line-1);
  color:var(--text-2);font-size:14px;
  transition:color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.socials a:hover{color:var(--brand-soft);border-color:var(--line-2);box-shadow:0 0 18px -4px var(--brand-glow)}
.footer-title{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--text-1);margin-bottom:16px}
.footer-list li{margin-bottom:10px}
.footer-list a{font-size:14px;color:var(--text-2)}
.footer-list a:hover{color:var(--brand-soft)}
.sub-form{display:flex;gap:10px;margin-top:6px}
.sub-form input{
  flex:1;min-width:0;height:44px;border-radius:var(--r-btn);
  background:var(--bg-3);border:1px solid var(--line-1);
  color:var(--text-1);font-size:14px;padding:0 14px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(44,91,255,.22)}
.sub-hint{font-size:12.5px;color:var(--text-3);margin-top:10px}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line-1);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:14px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--brand-soft)}
.footer-bottom .legal-links{display:flex;gap:18px;flex-wrap:wrap}

/* 移动端底部粘性条 */
.mobile-cta{display:none}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .container-wide{max-width:1200px}
}
@media (max-width:1199px){
  .hero h1{font-size:40px}
  .section-head h2{font-size:30px}
  .post-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:991px){
  .main-nav{display:none}
  .burger{display:grid}
  .hot-entry{display:none}
  .header-top{height:64px;gap:16px}
  .hero{padding:48px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{justify-content:center}
  .v-card{max-width:100%;aspect-ratio:4/5}
  .hero h1{font-size:36px}
  .section{padding:64px 0}
  .plant-grid{grid-template-columns:1fr;gap:32px}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .convert-bar{flex-direction:column;align-items:flex-start;gap:16px}
  .convert-bar .btn{width:100%}
}
@media (max-width:767px){
  .section{padding:48px 0}
  .section-head{margin-bottom:26px}
  .section-head h2{font-size:26px}
  .hero h1{font-size:32px;line-height:1.28}
  .hero-sub{font-size:15px}
  .hero-cta{gap:12px}
  .hero-cta .btn{flex:1 1 0;min-width:0}
  .hero-stats{gap:22px;margin-top:28px}
  .hero-stats strong{font-size:21px}
  .rail-item{flex:0 0 78vw}
  .review-card{flex:0 0 86vw}
  .post-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .sub-form{flex-wrap:wrap}
  .sub-form input{flex:1 1 100%}
  .sub-form .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .convert-bar{padding:20px}
  .mobile-cta{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:1050;
    align-items:center;justify-content:space-between;gap:12px;
    height:64px;padding:0 16px;
    background:rgba(5,10,20,.94);
    backdrop-filter:blur(18px);
    border-top:1px solid var(--line-1);
  }
  .mobile-cta span{font-size:13px;color:var(--text-2)}
  .mobile-cta .btn{flex:1;max-width:200px}
  body{padding-bottom:64px}
}
@media (max-width:519px){
  .container{padding:0 18px}
  .hero h1{font-size:29px}
  .brand-text strong{font-size:15px}
  .brand-mark{width:36px;height:36px}
  .section-head h2{font-size:23px}
  .hero-cta{flex-direction:column}
  .hero-cta .btn{width:100%}
}

/* roulang page: article */
:root{
  --bg-0:#050A14;
  --bg-1:#0B1524;
  --bg-2:#101D31;
  --bg-3:#16253D;
  --brand:#2C5BFF;
  --brand-soft:#6E8FFF;
  --brand-glow:rgba(44,91,255,.45);
  --accent:#FF7A3D;
  --accent-glow:rgba(255,122,61,.42);
  --mint:#35E2C0;
  --text-1:#EAF1FF;
  --text-2:#A8B8D4;
  --text-3:#6B7C9B;
  --line-1:rgba(126,170,255,.14);
  --line-2:rgba(126,170,255,.28);
  --glass:linear-gradient(160deg,rgba(20,34,58,.86),rgba(11,21,36,.74));
  --r-lg:18px;
  --r-xl:22px;
  --r-sm:14px;
  --r-btn:12px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.9);
  --shadow-hover:0 24px 56px -22px rgba(0,0,0,.95);
  --bs-body-bg:#050A14;
  --bs-body-color:#EAF1FF;
  --bs-primary:#2C5BFF;
  --bs-border-color:rgba(126,170,255,.14);
  --bs-link-color:#6E8FFF;
  --bs-link-hover-color:#2C5BFF;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand-soft);text-decoration:none;transition:color .18s cubic-bezier(.2,.7,.3,1);}
a:hover{color:var(--brand);}
button{font-family:inherit;}
::selection{background:rgba(44,91,255,.35);color:#fff;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media(min-width:992px){.container{padding-left:24px;padding-right:24px;}}
@media(min-width:1440px){.container{max-width:1320px;}}

/* ---------- 顶部阅读进度 ---------- */
.read-progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:1300;background:transparent;pointer-events:none;}
.read-progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--brand),var(--accent));box-shadow:0 0 12px var(--brand-glow);transition:width .08s linear;}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:1200;
  background:rgba(5,10,20,.78);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line-1);
  transition:background .24s ease,box-shadow .24s ease;
}
.site-header.scrolled{background:rgba(5,10,20,.86);box-shadow:0 14px 34px -22px rgba(0,0,0,.95);}
.header-top{display:flex;align-items:center;gap:24px;height:76px;transition:height .24s ease;}
.site-header.scrolled .header-top{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand:hover{color:var(--text-1);}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(44,91,255,.9),rgba(110,143,255,.55));
  color:#fff;font-size:16px;
  box-shadow:0 10px 26px -12px var(--brand-glow),inset 0 1px 0 rgba(255,255,255,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:17px;font-weight:800;color:var(--text-1);letter-spacing:-.01em;}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.06em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1;min-width:0;}
.main-nav .nav-link{
  position:relative;display:inline-block;padding:8px 12px;border-radius:10px;
  font-size:14.5px;font-weight:500;color:var(--text-2);white-space:nowrap;
  transition:color .18s cubic-bezier(.2,.7,.3,1),background .18s cubic-bezier(.2,.7,.3,1);
}
.main-nav .nav-link:hover{color:var(--brand-soft);background:rgba(44,91,255,.08);}
.main-nav .nav-link.active{color:var(--text-1);font-weight:700;}
.main-nav .nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px 1px var(--brand-glow);
}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.icon-btn{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:rgba(22,37,61,.72);border:1px solid var(--line-1);color:var(--text-2);
  cursor:pointer;transition:all .18s cubic-bezier(.2,.7,.3,1);
}
.icon-btn:hover{color:var(--text-1);border-color:var(--line-2);background:var(--bg-3);}
.hot-entry{
  display:inline-flex;align-items:center;gap:6px;height:38px;padding:0 16px;border-radius:12px;
  font-size:13.5px;font-weight:600;color:#fff;
  background:linear-gradient(140deg,rgba(255,122,61,.95),rgba(255,122,61,.72));
  box-shadow:0 10px 26px -14px var(--accent-glow);
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s cubic-bezier(.2,.7,.3,1);
}
.hot-entry:hover{color:#fff;transform:translateY(-1px);box-shadow:0 14px 30px -12px var(--accent-glow);}
.burger{display:none;}

.trend-bar{border-top:1px solid var(--line-1);background:rgba(11,21,36,.5);}
.trend-inner{display:flex;align-items:center;gap:8px;height:44px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;}
.trend-inner::-webkit-scrollbar{display:none;}
.trend-label{font-size:11px;letter-spacing:.14em;color:var(--text-3);flex-shrink:0;padding-right:4px;}
.pill{
  display:inline-flex;align-items:center;height:28px;padding:0 13px;border-radius:999px;
  font-size:12.5px;color:var(--text-2);white-space:nowrap;
  background:rgba(22,37,61,.7);border:1px solid var(--line-1);
  transition:all .18s cubic-bezier(.2,.7,.3,1);
}
.pill:hover{color:var(--text-1);border-color:var(--line-2);background:var(--bg-3);}

.search-panel{
  display:none;position:absolute;left:0;right:0;top:100%;
  background:rgba(5,10,20,.96);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line-1);
  box-shadow:0 30px 60px -30px rgba(0,0,0,.95);
  padding:22px 0 26px;z-index:1190;
}
.search-panel.open{display:block;}
.search-field{display:flex;gap:12px;}
.search-field input{
  flex:1;height:46px;border-radius:12px;padding:0 16px;
  background:var(--bg-3);border:1px solid var(--line-1);color:var(--text-1);
  font-size:14.5px;outline:none;transition:border-color .18s,box-shadow .18s;
}
.search-field input::placeholder{color:var(--text-3);}
.search-field input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(44,91,255,.18);}
.search-labels{font-size:12px;letter-spacing:.12em;color:var(--text-3);margin:18px 0 10px;}
.search-pills{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:12px;border:1px solid transparent;
  font-size:14.5px;font-weight:600;line-height:1;cursor:pointer;
  transition:all .18s cubic-bezier(.2,.7,.3,1);
}
.btn:focus-visible{outline:2px solid var(--mint);outline-offset:2px;box-shadow:0 0 0 4px rgba(53,226,192,.22);}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px;}
.btn-primary-glow{
  color:#fff;background:linear-gradient(140deg,#3A66FF,#2C5BFF 60%,#1F43C6);
  box-shadow:0 10px 30px -10px var(--brand-glow),inset 0 1px 0 rgba(255,255,255,.24);
}
.btn-primary-glow:hover{color:#fff;transform:translateY(-1px);box-shadow:0 16px 36px -12px var(--brand-glow),inset 0 1px 0 rgba(255,255,255,.3);}
.btn-accent{
  color:#1A0A03;background:linear-gradient(140deg,#FF8F58,#FF7A3D 60%,#F2632B);
  box-shadow:0 10px 30px -10px var(--accent-glow),inset 0 1px 0 rgba(255,255,255,.4);
  animation:breathe 3.2s ease-in-out infinite;
}
.btn-accent:hover{color:#1A0A03;transform:translateY(-1px);}
@keyframes breathe{0%,100%{box-shadow:0 10px 30px -10px var(--accent-glow),inset 0 1px 0 rgba(255,255,255,.4);}50%{box-shadow:0 14px 38px -8px rgba(255,122,61,.62),inset 0 1px 0 rgba(255,255,255,.5);}}
.btn-ghost{color:var(--text-1);background:transparent;border-color:var(--line-2);}
.btn-ghost:hover{color:var(--text-1);background:var(--bg-2);border-color:var(--line-2);transform:translateY(-1px);}
.btn-link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-soft);}
.btn-link-arrow i{transition:transform .18s cubic-bezier(.2,.7,.3,1);}
.btn-link-arrow:hover i{transform:translateX(3px);}

/* ---------- 徽章 / 标签 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(44,91,255,.12);border:1px solid rgba(44,91,255,.38);color:var(--brand-soft);
}
.badge-mint{background:rgba(53,226,192,.12);border-color:rgba(53,226,192,.36);color:var(--mint);}
.badge-accent{background:rgba(255,122,61,.12);border-color:rgba(255,122,61,.36);color:#FFA477;}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:1400;padding:20px;
  background:rgba(4,8,15,.97);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  transform:translateX(102%);transition:transform .3s cubic-bezier(.2,.7,.3,1);
  overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-nav{display:flex;flex-direction:column;margin:8px 0 22px;}
.drawer-nav a{
  font-size:20px;line-height:56px;color:var(--text-1);font-weight:600;
  border-bottom:1px solid var(--line-1);
}
.drawer-nav a.active{color:var(--brand-soft);}
.drawer-cta{width:100%;margin-top:6px;}

/* ---------- 主区 ---------- */
.page-main{padding:34px 0 88px;position:relative;}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:26px;}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand-soft);}
.crumb .sep{color:rgba(126,170,255,.32);}
.crumb .current{color:var(--text-2);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 268px;gap:48px;align-items:start;}
.article-head{margin-bottom:28px;}
.article-head h1{
  font-size:clamp(26px,3.2vw,40px);line-height:1.25;font-weight:800;letter-spacing:-.01em;
  color:var(--text-1);margin:14px 0 18px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--text-3);}
.meta-row .dot{width:1px;height:12px;background:var(--line-2);display:inline-block;}
.head-bar{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;flex-wrap:wrap;}
.share-group{display:flex;gap:10px;}
.share-btn{
  width:38px;height:38px;border-radius:999px;display:grid;place-items:center;
  background:rgba(22,37,61,.72);border:1px solid var(--line-1);color:var(--text-2);
  cursor:pointer;transition:all .18s cubic-bezier(.2,.7,.3,1);
}
.share-btn:hover{color:var(--text-1);border-color:var(--line-2);box-shadow:0 0 18px -4px var(--brand-glow);}

/* 折叠目录（<1200px） */
.toc-collapse{
  display:none;margin-bottom:24px;border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--line-1);overflow:hidden;
}
.toc-collapse summary{
  cursor:pointer;list-style:none;padding:14px 18px;font-size:14px;font-weight:700;color:var(--text-1);
  display:flex;align-items:center;justify-content:space-between;
}
.toc-collapse summary::-webkit-details-marker{display:none;}
.toc-collapse ol{margin:0;padding:4px 18px 16px 34px;font-size:13.5px;color:var(--text-2);}
.toc-collapse li{margin-bottom:8px;}

/* 正文排版 */
.article-body{max-width:820px;font-size:16px;line-height:1.9;color:var(--text-1);word-break:normal;}
.article-body p{margin:0 0 1.1em;color:var(--text-1);}
.article-body h2{
  position:relative;font-size:30px;line-height:1.25;font-weight:700;color:var(--text-1);
  margin:40px 0 18px;padding-left:16px;scroll-margin-top:110px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;width:4px;height:1em;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px 1px var(--brand-glow);
}
.article-body h3{font-size:22px;line-height:1.4;font-weight:700;margin:28px 0 14px;color:var(--text-1);scroll-margin-top:110px;}
.article-body h4{font-size:18px;line-height:1.5;font-weight:600;margin:22px 0 12px;color:var(--text-1);}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:0;list-style:none;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px;color:var(--text-2);}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.82em;width:6px;height:6px;border-radius:50%;
  background:var(--mint);box-shadow:0 0 10px rgba(53,226,192,.55);
}
.article-body ol{counter-reset:li;padding-left:0;}
.article-body ol li{position:relative;padding-left:34px;margin-bottom:10px;color:var(--text-2);counter-increment:li;}
.article-body ol li::before{
  content:counter(li,decimal-leading-zero);position:absolute;left:0;top:.35em;
  font-size:12.5px;font-weight:700;color:var(--mint);letter-spacing:.04em;font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:24px 0;padding:20px 22px;border-left:3px solid var(--brand);
  background:var(--glass);border-radius:var(--r-sm);color:var(--text-2);
  box-shadow:var(--shadow-card);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:14px;margin:24px auto;max-width:100%;height:auto;background:var(--bg-3);}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px;border-radius:var(--r-sm);overflow:hidden;}
.article-body th{
  background:var(--bg-2);color:var(--text-1);font-weight:700;text-align:left;
  padding:13px 16px;border:none;
}
.article-body td{padding:13px 16px;color:var(--text-2);border:none;}
.article-body tbody tr:nth-child(even){background:rgba(22,37,61,.55);}
.article-body tbody tr:nth-child(odd){background:rgba(11,21,36,.45);}
.article-body strong{color:var(--text-1);font-weight:700;}
.article-body a{color:var(--brand-soft);border-bottom:1px solid rgba(110,143,255,.35);}
.article-body a:hover{color:var(--brand);border-bottom-color:var(--brand);}
.article-body hr{border:none;height:1px;background:var(--line-1);margin:34px 0;}

/* 空态 */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;
  min-height:300px;padding:46px 24px;border-radius:var(--r-lg);
  background:var(--glass);border:1px dashed var(--line-2);
}
.empty-state i{font-size:44px;color:var(--brand-soft);opacity:.7;margin-bottom:18px;}
.empty-state h2{font-size:18px;font-weight:700;color:var(--text-1);margin:0 0 8px;padding:0;border:none;}
.empty-state h2::before{display:none;}
.empty-state p{font-size:14px;color:var(--text-3);margin:0 0 20px;}

/* 目录侧栏 */
.toc-aside{position:sticky;top:96px;}
.toc-card{
  background:var(--glass);border:1px solid var(--line-1);border-radius:var(--r-lg);
  padding:20px 20px 22px;box-shadow:var(--shadow-card);position:relative;overflow:hidden;
}
.toc-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
}
.toc-title{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--text-3);margin-bottom:14px;text-transform:none;}
.toc-list{list-style:none;margin:0;padding:0;max-height:60vh;overflow-y:auto;}
.toc-list li{margin-bottom:4px;}
.toc-list a{
  display:block;padding:7px 12px;border-left:2px solid transparent;border-radius:0 8px 8px 0;
  font-size:13.5px;line-height:1.6;color:var(--text-2);
  transition:all .18s cubic-bezier(.2,.7,.3,1);
}
.toc-list a:hover{color:var(--text-1);background:rgba(44,91,255,.08);}
.toc-list a.active{color:var(--brand-soft);border-left-color:var(--brand);background:rgba(44,91,255,.12);font-weight:600;}
.toc-empty{font-size:13px;color:var(--text-3);line-height:1.8;}

/* 文末 */
.article-foot{margin-top:44px;max-width:820px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;padding-top:26px;border-top:1px solid var(--line-1);}
.tag-pill{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  font-size:12.5px;color:var(--text-2);background:transparent;border:1px solid var(--line-2);
  transition:all .18s cubic-bezier(.2,.7,.3,1);
}
.tag-pill:hover{color:var(--text-1);border-color:var(--brand);background:rgba(44,91,255,.12);}
.foot-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}

/* 相关推荐 */
.related{margin-top:72px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;}
.section-head h2{font-size:26px;font-weight:700;margin:0;color:var(--text-1);letter-spacing:-.01em;}
.section-head p{margin:6px 0 0;font-size:14px;color:var(--text-3);}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.related-card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line-1);box-shadow:var(--shadow-card);
  transition:transform .18s cubic-bezier(.2,.7,.3,1),border-color .18s,box-shadow .18s;
}
.related-card:hover{transform:translateY(-2px);border-color:var(--line-2);box-shadow:var(--shadow-hover);}
.related-thumb{position:relative;aspect-ratio:16/10;background:var(--bg-3);overflow:hidden;}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s cubic-bezier(.2,.7,.3,1);}
.related-card:hover .related-thumb img{transform:scale(1.04);}
.related-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;}
.related-body h3{font-size:16px;line-height:1.5;font-weight:700;color:var(--text-1);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--text-3);margin-top:auto;}

/* CTA 面板 */
.cta-panel{
  margin-top:64px;padding:30px 32px;border-radius:var(--r-xl);
  background:var(--glass);border:1px solid var(--line-1);box-shadow:var(--shadow-card);
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-panel::after{
  content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(44,91,255,.22),transparent 68%);pointer-events:none;
}
.cta-panel h2{font-size:22px;font-weight:800;margin:0 0 8px;color:var(--text-1);}
.cta-panel p{margin:0;font-size:14px;color:var(--text-2);max-width:560px;}
.cta-panel .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.back-top{
  position:fixed;right:24px;bottom:88px;width:46px;height:46px;border-radius:999px;
  display:grid;place-items:center;cursor:pointer;z-index:1100;
  background:rgba(22,37,61,.9);border:1px solid var(--line-2);color:var(--text-1);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .24s cubic-bezier(.2,.7,.3,1);
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{border-color:var(--brand);box-shadow:0 0 22px -6px var(--brand-glow);}

/* ---------- 页脚 ---------- */
.site-footer{background:#04080F;border-top:1px solid var(--line-1);padding:64px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-desc{font-size:13.5px;line-height:1.85;color:var(--text-3);margin:0 0 18px;max-width:280px;}
.socials{display:flex;gap:10px;}
.socials a{
  width:36px;height:36px;border-radius:999px;display:grid;place-items:center;
  background:rgba(22,37,61,.7);border:1px solid var(--line-1);color:var(--text-2);
  transition:all .18s cubic-bezier(.2,.7,.3,1);
}
.socials a:hover{color:var(--text-1);border-color:var(--brand);box-shadow:0 0 18px -6px var(--brand-glow);}
.footer-title{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--text-1);margin-bottom:16px;}
.footer-list{list-style:none;margin:0;padding:0;}
.footer-list li{margin-bottom:11px;}
.footer-list a{font-size:13.5px;color:var(--text-3);}
.footer-list a:hover{color:var(--brand-soft);}
.sub-form{display:flex;gap:10px;}
.sub-form input{
  flex:1;min-width:0;height:38px;border-radius:10px;padding:0 13px;
  background:var(--bg-3);border:1px solid var(--line-1);color:var(--text-1);font-size:13.5px;outline:none;
  transition:border-color .18s,box-shadow .18s;
}
.sub-form input::placeholder{color:var(--text-3);}
.sub-form input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(44,91,255,.18);}
.sub-hint{font-size:12.5px;color:var(--text-3);margin:12px 0 0;line-height:1.7;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-1);
  font-size:12.5px;color:var(--text-3);
}
.legal-links{display:flex;flex-wrap:wrap;gap:18px;}
.legal-links a{color:var(--text-3);font-size:12.5px;}
.legal-links a:hover{color:var(--brand-soft);}

/* ---------- 响应式 ---------- */
@media(max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .toc-aside{display:none;}
  .toc-collapse{display:block;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media(max-width:991px){
  .main-nav{display:none;}
  .burger{display:grid;}
  .hot-entry{display:none;}
  .header-top{height:64px;gap:14px;}
  .brand-text em{display:none;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .page-main{padding:26px 0 64px;}
  .article-body h2{font-size:26px;}
  .article-body h3{font-size:20px;}
}
@media(max-width:767px){
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .section-head h2{font-size:22px;}
  .article-head h1{font-size:28px;}
  .article-body{font-size:15.5px;}
  .article-body h2{font-size:24px;margin-top:32px;}
  .article-body h3{font-size:19px;}
  .cta-panel{padding:24px 20px;flex-direction:column;align-items:flex-start;}
  .cta-panel .cta-actions{width:100%;}
  .cta-panel .cta-actions .btn{flex:1;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
  .sub-form{flex-wrap:wrap;}
  .sub-form .btn{width:100%;}
  .back-top{right:16px;bottom:76px;}
}
@media(max-width:520px){
  .search-field{flex-wrap:wrap;}
  .search-field .btn{width:100%;}
  .head-bar{flex-direction:column;}
  .share-group{gap:8px;}
  .crumb .current{max-width:180px;}
}

/* roulang page: category1 */
:root{
  --bg-0:#050A14;
  --bg-1:#0B1524;
  --bg-2:#101D31;
  --bg-3:#16253D;
  --brand:#2C5BFF;
  --brand-soft:#6E8FFF;
  --brand-glow:rgba(44,91,255,.45);
  --accent:#FF7A3D;
  --accent-glow:rgba(255,122,61,.42);
  --mint:#35E2C0;
  --text-1:#EAF1FF;
  --text-2:#A8B8D4;
  --text-3:#6B7C9B;
  --line-1:rgba(126,170,255,.14);
  --line-2:rgba(126,170,255,.28);
  --glass:linear-gradient(160deg, rgba(20,34,58,.86), rgba(11,21,36,.74));
  --r-lg:18px;
  --r-xl:22px;
  --r-sm:14px;
  --r-btn:12px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.9);
  --shadow-hover:0 24px 56px -22px rgba(0,0,0,.95), 0 0 0 1px var(--line-2);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#2C5BFF;
  --bs-body-bg:#050A14;
  --bs-body-color:#EAF1FF;
  --bs-border-color:rgba(126,170,255,.14);
  --bs-link-color:#6E8FFF;
  --bs-link-hover-color:#EAF1FF;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --bs-border-radius:14px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  color:var(--text-1);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(600px 600px at 90% -8%, rgba(44,91,255,.18), transparent 72%),
    radial-gradient(520px 520px at -10% 42%, rgba(44,91,255,.11), transparent 72%);
  background-repeat:no-repeat;
  overflow-x:hidden;
  word-break:normal;
}
a{color:var(--brand-soft);text-decoration:none;transition:color 180ms var(--ease)}
a:hover{color:var(--text-1)}
img{max-width:100%;display:block}
h1,h2,h3,h4,h5,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;box-shadow:0 0 0 4px rgba(53,226,192,.18);border-radius:6px}
::selection{background:rgba(44,91,255,.35);color:#fff}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
  --bs-gutter-x:0;
}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media (min-width:1440px){.container{max-width:1320px}}

/* ============ header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(5,10,20,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms var(--ease);
}
.site-header.is-scrolled{
  background:rgba(5,10,20,.86);
  border-bottom-color:var(--line-1);
  box-shadow:0 14px 34px -24px rgba(0,0,0,.95);
}
.header-top{
  display:flex;
  align-items:center;
  gap:24px;
  height:76px;
  transition:height 240ms var(--ease);
}
.site-header.is-scrolled .header-top{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  color:#fff;font-size:16px;
  background:linear-gradient(150deg,var(--brand),#1B3CC4);
  box-shadow:0 10px 24px -12px var(--brand-glow),inset 0 1px 0 rgba(255,255,255,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:17px;font-weight:800;color:var(--text-1);letter-spacing:-.01em}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.08em;margin-top:3px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.main-nav .nav-link{
  position:relative;
  display:block;
  padding:8px 12px;
  font-size:15px;
  color:var(--text-2);
  border-radius:10px;
  transition:color 180ms var(--ease),background 180ms var(--ease);
}
.main-nav .nav-link:hover{color:var(--brand-soft);background:rgba(44,91,255,.08)}
.main-nav .nav-link.active{color:var(--text-1);font-weight:600}
.main-nav .nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 8px 1px var(--brand-glow);
}
.header-actions{display:flex;align-items:center;gap:8px;margin-left:auto}
.icon-btn{
  width:38px;height:38px;border-radius:11px;border:1px solid var(--line-1);
  background:rgba(16,29,49,.6);color:var(--text-2);
  display:grid;place-items:center;cursor:pointer;font-size:14px;
  transition:color 180ms var(--ease),border-color 180ms var(--ease),background 180ms var(--ease);
}
.icon-btn:hover{color:var(--text-1);border-color:var(--line-2);background:var(--bg-2)}
.hot-entry{
  display:inline-flex;align-items:center;gap:6px;height:38px;padding:0 14px;
  border-radius:999px;font-size:13px;color:var(--accent);
  border:1px solid rgba(255,122,61,.35);background:rgba(255,122,61,.12);
  transition:background 180ms var(--ease),transform 180ms var(--ease);
}
.hot-entry:hover{color:#fff;background:rgba(255,122,61,.24);transform:translateY(-1px)}
.burger{display:none}

.trend-bar{border-top:1px solid var(--line-1)}
.trend-inner{
  display:flex;align-items:center;gap:10px;
  padding-top:9px;padding-bottom:9px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  white-space:nowrap;
}
.trend-inner::-webkit-scrollbar{display:none}
.trend-label{font-size:12px;color:var(--text-3);letter-spacing:.12em;flex:none}
.pill{
  flex:none;
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  font-size:12px;color:var(--text-2);border-radius:999px;
  border:1px solid var(--line-1);background:rgba(22,37,61,.55);
  transition:color 180ms var(--ease),border-color 180ms var(--ease),background 180ms var(--ease);
}
.pill:hover{color:var(--text-1);border-color:var(--line-2);background:var(--bg-2)}

.search-panel{
  display:none;
  border-top:1px solid var(--line-1);
  background:rgba(8,16,29,.94);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.search-panel.open{display:block}
.search-panel .container{padding-top:18px;padding-bottom:18px}
.search-field{display:flex;gap:10px}
.search-field input{
  flex:1;height:46px;padding:0 16px;border-radius:var(--r-btn);
  background:var(--bg-3);border:1px solid var(--line-1);color:var(--text-1);font-size:15px;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.search-field input::placeholder{color:var(--text-3)}
.search-field input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(44,91,255,.18)}
.search-labels{margin-top:14px;font-size:12px;color:var(--text-3);letter-spacing:.08em}
.search-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.search-tags a{
  font-size:12px;color:var(--text-2);padding:5px 12px;border-radius:999px;
  border:1px solid var(--line-1);background:rgba(22,37,61,.5);
}
.search-tags a:hover{color:var(--text-1);border-color:var(--line-2)}

.mobile-drawer{
  display:none;
  position:fixed;inset:0;z-index:1045;
  background:rgba(5,10,20,.94);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  padding:22px 20px 32px;
  overflow-y:auto;
}
.mobile-drawer.open{display:flex;flex-direction:column;gap:18px}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-links{display:flex;flex-direction:column;border-top:1px solid var(--line-1)}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 2px;font-size:20px;color:var(--text-1);
  border-bottom:1px solid var(--line-1);
}
.drawer-links a.active{color:var(--brand-soft)}
.drawer-links a i{font-size:13px;color:var(--text-3)}
.drawer-cta{margin-top:auto}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-sm{height:38px;padding:0 16px;font-size:13px}
.btn-primary-glow{
  color:#fff;
  background:linear-gradient(150deg,var(--brand),#1B3CC4);
  box-shadow:0 10px 30px -8px var(--brand-glow),inset 0 1px 0 rgba(255,255,255,.18);
}
.btn-primary-glow:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 36px -10px var(--brand-glow)}
.btn-accent{
  color:#1A0A02;font-weight:700;
  background:linear-gradient(150deg,#FF9057,var(--accent));
  box-shadow:0 10px 30px -10px var(--accent-glow),inset 0 1px 0 rgba(255,255,255,.3);
  animation:accentBreath 3.2s ease-in-out infinite;
}
.btn-accent:hover{color:#1A0A02;transform:translateY(-2px)}
@keyframes accentBreath{
  0%,100%{box-shadow:0 10px 30px -10px rgba(255,122,61,.42),inset 0 1px 0 rgba(255,255,255,.3)}
  50%{box-shadow:0 12px 36px -10px rgba(255,122,61,.62),inset 0 1px 0 rgba(255,255,255,.3)}
}
.btn-ghost{
  color:var(--text-1);background:transparent;border-color:var(--line-2);
}
.btn-ghost:hover{color:#fff;background:var(--bg-2);border-color:var(--line-2);transform:translateY(-2px)}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand-soft);
}
.link-arrow i{transition:transform 180ms var(--ease)}
.link-arrow:hover{color:var(--text-1)}
.link-arrow:hover i{transform:translateX(3px)}

/* ============ hero ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:56px 0 64px;
  border-bottom:1px solid var(--line-1);
  background-image:linear-gradient(90deg, rgba(5,10,20,.96) 0%, rgba(5,10,20,.86) 46%, rgba(5,10,20,.62) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center right;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(to right, rgba(126,170,255,.05) 1px, transparent 1px),
                   linear-gradient(to bottom, rgba(126,170,255,.05) 1px, transparent 1px);
  background-size:32px 32px;
  mask-image:radial-gradient(circle at 30% 40%, #000 0%, transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 30% 40%, #000 0%, transparent 78%);
}
.page-hero .container{position:relative;z-index:1}
.breadcrumb-line{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:20px;
}
.breadcrumb-line a{color:var(--text-3)}
.breadcrumb-line a:hover{color:var(--brand-soft)}
.breadcrumb-line .sep{color:rgba(107,124,155,.6)}
.breadcrumb-line .current{color:var(--text-2)}
.hero-flex{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;flex-wrap:wrap}
.hero-main{max-width:720px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--brand-soft);
  padding:6px 14px;border-radius:999px;
  border:1px solid rgba(44,91,255,.34);background:rgba(44,91,255,.12);
  margin-bottom:18px;
}
h1.hero-title{
  font-size:46px;line-height:1.2;font-weight:800;letter-spacing:-.01em;color:var(--text-1);
}
.hero-lead{
  margin-top:16px;font-size:16px;line-height:1.85;color:var(--text-2);max-width:660px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.stat-chip{
  display:flex;flex-direction:column;gap:2px;
  padding:12px 18px;border-radius:var(--r-sm);
  border:1px solid var(--line-1);
  background:linear-gradient(160deg, rgba(20,34,58,.86), rgba(11,21,36,.74));
  min-width:132px;
}
.stat-chip b{font-size:20px;color:var(--mint);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.stat-chip span{font-size:12px;color:var(--text-3)}
.hero-side{display:flex;gap:10px;flex-wrap:wrap}
.side-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;border-radius:999px;font-size:12px;color:var(--text-2);
  border:1px solid var(--line-1);background:rgba(22,37,61,.6);
}

/* ============ section basics ============ */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:34px;flex-wrap:wrap;
}
.section-head h2{
  font-size:32px;line-height:1.25;font-weight:700;letter-spacing:-.01em;color:var(--text-1);
}
.section-head p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:640px}
.section-head .head-right{flex:none}
.divider{height:1px;background:var(--line-1);border:0;margin:0}

.card-surface{
  border-radius:var(--r-lg);
  border:1px solid var(--line-1);
  background:var(--glass);
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.card-surface::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg, transparent, rgba(200,220,255,.22), transparent);
}
.badge-cat{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;
  font-size:12px;border-radius:999px;
  color:var(--brand-soft);background:rgba(44,91,255,.12);border:1px solid rgba(44,91,255,.32);
}
.badge-data{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;
  font-size:12px;border-radius:999px;
  color:var(--mint);background:rgba(53,226,192,.12);border:1px solid rgba(53,226,192,.32);
  font-variant-numeric:tabular-nums;
}
.badge-time{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;
  font-size:12px;border-radius:999px;
  color:var(--accent);background:rgba(255,122,61,.12);border:1px solid rgba(255,122,61,.32);
}

/* ============ focus grid ============ */
.focus-grid{display:grid;grid-template-columns:8fr 4fr;gap:20px;align-items:start}
.focus-list{display:flex;flex-direction:column;gap:16px}
.focus-item{
  display:flex;gap:18px;padding:22px 24px;border-radius:var(--r-lg);
  border:1px solid var(--line-1);background:var(--glass);box-shadow:var(--shadow-card);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.focus-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--line-2)}
.focus-num{
  flex:none;width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;
  color:var(--mint);font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
  border:1px solid rgba(53,226,192,.4);background:rgba(53,226,192,.08);
}
.focus-body h3{font-size:18px;line-height:1.5;font-weight:700;color:var(--text-1)}
.focus-body p{margin-top:6px;font-size:14px;line-height:1.8;color:var(--text-2)}
.focus-body .meta{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px}
.cover-tall{
  border-radius:var(--r-xl);overflow:hidden;position:relative;
  border:1px solid var(--line-1);background:var(--bg-3);
  aspect-ratio:4/5;
  box-shadow:var(--shadow-card);
}
.cover-tall img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease)}
.cover-tall:hover img{transform:scale(1.03)}
.cover-tall .overlay{
  position:absolute;left:0;right:0;bottom:0;padding:18px;
  background:linear-gradient(180deg, rgba(5,10,20,0) 0%, rgba(5,10,20,.92) 100%);
}
.cover-tall .overlay h3{font-size:17px;line-height:1.5;color:#fff;font-weight:700}
.cover-tall .overlay p{font-size:13px;color:var(--text-2);margin-top:6px}
.cover-tall .corner{
  position:absolute;top:14px;right:14px;
}

/* ============ flow list ============ */
.flow-grid{display:grid;grid-template-columns:5fr 7fr;gap:26px;align-items:center}
.cover-wide{
  border-radius:var(--r-lg);overflow:hidden;aspect-ratio:4/3;background:var(--bg-3);
  border:1px solid var(--line-1);box-shadow:var(--shadow-card);
}
.cover-wide img{width:100%;height:100%;object-fit:cover}
.step-list{display:flex;flex-direction:column}
.step-item{
  display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--line-1);
}
.step-item:first-child{padding-top:0}
.step-item:last-child{border-bottom:0;padding-bottom:0}
.step-dot{
  flex:none;width:36px;height:36px;border-radius:50%;
  display:grid;place-items:center;font-size:13px;font-weight:700;
  color:var(--brand-soft);border:1px solid rgba(44,91,255,.38);background:rgba(44,91,255,.1);
  font-variant-numeric:tabular-nums;
}
.step-item h3{font-size:18px;font-weight:700;color:var(--text-1);line-height:1.5}
.step-item p{margin-top:6px;font-size:14px;line-height:1.8;color:var(--text-2)}

/* ============ timeline ============ */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.tl-card{
  padding:22px 20px;border-radius:var(--r-lg);
  border:1px solid var(--line-1);background:linear-gradient(160deg, rgba(16,29,49,.9), rgba(11,21,36,.7));
  position:relative;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.tl-card:hover{transform:translateY(-2px);border-color:var(--line-2);box-shadow:var(--shadow-hover)}
.tl-card::after{
  content:"";position:absolute;top:34px;right:-18px;width:18px;height:1px;background:var(--line-2);
}
.tl-card:last-child::after{display:none}
.tl-time{font-size:12px;letter-spacing:.1em;color:var(--mint);font-variant-numeric:tabular-nums}
.tl-card h3{margin-top:10px;font-size:17px;font-weight:700;color:var(--text-1);line-height:1.5}
.tl-card p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--text-2)}

/* ============ scenes ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.scene-card{
  padding:26px 24px 24px;border-radius:var(--r-lg);
  border:1px solid var(--line-1);background:var(--glass);box-shadow:var(--shadow-card);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
  display:flex;flex-direction:column;gap:12px;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--line-2)}
.scene-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;font-size:18px;
  color:var(--brand-soft);background:rgba(44,91,255,.12);border:1px solid rgba(44,91,255,.3);
}
.scene-card.is-mint .scene-icon{color:var(--mint);background:rgba(53,226,192,.12);border-color:rgba(53,226,192,.3)}
.scene-card.is-accent .scene-icon{color:var(--accent);background:rgba(255,122,61,.12);border-color:rgba(255,122,61,.3)}
.scene-card h3{font-size:19px;font-weight:700;color:var(--text-1);line-height:1.5}
.scene-card p{font-size:14px;line-height:1.85;color:var(--text-2)}
.scene-card ul{margin-top:auto;display:flex;flex-direction:column;gap:8px;padding-top:6px}
.scene-card li{
  position:relative;padding-left:18px;font-size:13px;color:var(--text-2);line-height:1.7;
}
.scene-card li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--mint);
}

/* ============ faq ============ */
.faq-wrap{max-width:900px}
.faq-item{
  border-radius:var(--r-lg);border:1px solid var(--line-1);
  background:var(--glass);margin-bottom:12px;overflow:hidden;
  transition:border-color 180ms var(--ease);
}
.faq-item:hover{border-color:var(--line-2)}
.faq-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--text-1);cursor:pointer;
}
.faq-btn:hover{color:#fff}
.faq-btn .acc-icon{
  flex:none;width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;font-size:15px;
  color:var(--brand-soft);border:1px solid rgba(44,91,255,.34);background:rgba(44,91,255,.1);
  transition:transform 200ms var(--ease),color 180ms var(--ease);
}
.faq-btn[aria-expanded="true"] .acc-icon{transform:rotate(45deg);color:var(--accent);border-color:rgba(255,122,61,.4);background:rgba(255,122,61,.12)}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--text-2);max-width:820px}

/* ============ cta ============ */
.cta-panel{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:34px 36px;border-radius:var(--r-xl);
  border:1px solid var(--line-2);
  background:linear-gradient(160deg, rgba(28,46,76,.92), rgba(11,21,36,.86));
  box-shadow:0 26px 60px -30px rgba(0,0,0,.95);
  position:relative;overflow:hidden;
}
.cta-panel::before{
  content:"";position:absolute;right:-90px;top:-90px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle, rgba(44,91,255,.24), transparent 70%);
}
.cta-panel .cta-text{position:relative;z-index:1;max-width:640px}
.cta-panel h2{font-size:28px;line-height:1.3;font-weight:700;color:var(--text-1)}
.cta-panel p{margin-top:10px;font-size:15px;color:var(--text-2)}
.cta-panel .cta-actions{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap}

/* ============ footer ============ */
.site-footer{
  margin-top:0;
  background:#04080F;
  border-top:1px solid var(--line-1);
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:34px}
.footer-desc{margin-top:14px;font-size:14px;line-height:1.85;color:var(--text-2);max-width:280px}
.socials{display:flex;gap:10px;margin-top:18px}
.socials a{
  width:38px;height:38px;border-radius:50%;
  display:grid;place-items:center;font-size:14px;color:var(--text-2);
  border:1px solid var(--line-1);background:rgba(16,29,49,.6);
  transition:color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease);
}
.socials a:hover{color:#fff;border-color:var(--line-2);transform:translateY(-2px)}
.footer-title{font-size:14px;font-weight:700;color:var(--text-1);letter-spacing:.02em;margin-bottom:16px}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list a{font-size:14px;color:var(--text-2)}
.footer-list a:hover{color:var(--brand-soft)}
.sub-form{display:flex;gap:10px;margin-top:14px}
.sub-form input{
  flex:1;min-width:0;height:38px;padding:0 14px;border-radius:var(--r-btn);
  background:var(--bg-3);border:1px solid var(--line-1);color:var(--text-1);font-size:14px;
}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(44,91,255,.18)}
.sub-hint{margin-top:10px;font-size:12px;line-height:1.7;color:var(--text-3)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.legal-links{display:flex;gap:18px;flex-wrap:wrap}
.legal-links a{color:var(--text-3)}
.legal-links a:hover{color:var(--brand-soft)}

/* ============ responsive ============ */
@media (max-width:1199px){
  .focus-grid{grid-template-columns:1fr}
  .cover-tall{aspect-ratio:16/10;max-height:340px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:991px){
  .main-nav{display:none}
  .burger{display:grid}
  .hot-entry{display:none}
  h1.hero-title{font-size:36px}
  .section{padding:64px 0}
  .section-tight{padding:52px 0}
  .section-head h2{font-size:27px}
  .flow-grid{grid-template-columns:1fr;gap:24px}
  .timeline{grid-template-columns:1fr 1fr;gap:16px}
  .tl-card::after{display:none}
  .scene-grid{grid-template-columns:1fr 1fr}
  .page-hero{padding:44px 0 52px}
  .cta-panel{flex-direction:column;align-items:flex-start;padding:28px 24px}
  .cta-panel .cta-actions{width:100%}
}
@media (max-width:767px){
  body{font-size:15px}
  h1.hero-title{font-size:31px;line-height:1.25}
  .hero-lead{font-size:15px}
  .hero-actions{width:100%}
  .hero-actions .btn{flex:1 1 46%}
  .hero-stats{gap:10px}
  .stat-chip{flex:1 1 44%;min-width:0;padding:10px 14px}
  .stat-chip b{font-size:18px}
  .section{padding:48px 0}
  .section-tight{padding:44px 0}
  .section-head{margin-bottom:26px}
  .section-head h2{font-size:24px}
  .scene-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr}
  .focus-item{padding:18px 16px;gap:14px}
  .cover-tall{aspect-ratio:4/3}
  .faq-btn{font-size:16px;padding:16px}
  .faq-body{padding:0 16px 18px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-panel h2{font-size:22px}
}
@media (max-width:520px){
  .header-top{height:64px;gap:12px}
  .brand-mark{width:34px;height:34px;border-radius:10px;font-size:14px}
  .brand-text strong{font-size:15px}
  .brand-text em{font-size:10px}
  .btn{height:42px;padding:0 18px;font-size:14px}
  .sub-form{flex-wrap:wrap}
  .sub-form input{flex:1 1 100%}
  .sub-form .btn{width:100%}
  .hero-actions .btn{flex:1 1 100%}
}

/* roulang page: category2 */
:root{
  --bg-0:#050A14;
  --bg-1:#0B1524;
  --bg-2:#101D31;
  --bg-3:#16253D;
  --brand:#2C5BFF;
  --brand-soft:#6E8FFF;
  --brand-glow:rgba(44,91,255,.45);
  --accent:#FF7A3D;
  --accent-glow:rgba(255,122,61,.42);
  --mint:#35E2C0;
  --text-1:#EAF1FF;
  --text-2:#A8B8D4;
  --text-3:#6B7C9B;
  --line-1:rgba(126,170,255,.14);
  --line-2:rgba(126,170,255,.28);
  --glass:linear-gradient(160deg,rgba(20,34,58,.86),rgba(11,21,36,.74));
  --r-lg:18px;
  --r-cover:22px;
  --r-sm:14px;
  --r-btn:12px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.9);
  --shadow-hover:0 24px 56px -22px rgba(0,0,0,.95),0 0 0 1px var(--line-2);
  --ease:cubic-bezier(.2,.7,.3,1);

  --bs-primary:#2C5BFF;
  --bs-body-bg:#050A14;
  --bs-body-color:#EAF1FF;
  --bs-border-color:rgba(126,170,255,.14);
  --bs-link-color:#6E8FFF;
  --bs-link-hover-color:#2C5BFF;
  --bs-secondary-color:#A8B8D4;
  --bs-emphasis-color:#EAF1FF;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:
    radial-gradient(520px 520px at 88% -6%,rgba(44,91,255,.16),transparent 62%),
    radial-gradient(420px 420px at 4% 22%,rgba(44,91,255,.10),transparent 65%),
    var(--bg-0);
  background-attachment:fixed;
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand-soft);text-decoration:none;transition:color 180ms var(--ease);}
a:hover{color:var(--brand-soft);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.25;color:var(--text-1);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
figure{margin:0;}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;box-shadow:0 0 0 4px rgba(53,226,192,.22);}
::selection{background:rgba(44,91,255,.35);color:#fff;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){
  .container{padding-left:24px;padding-right:24px;}
}
@media (min-width:1440px){
  .container{max-width:1320px;}
}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(5,10,20,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line-1);
  transition:background 240ms var(--ease),box-shadow 240ms var(--ease);
}
.site-header.is-stuck{
  background:rgba(5,10,20,.82);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:0 18px 40px -30px rgba(0,0,0,.95);
}
.header-top{
  display:flex;
  align-items:center;
  gap:18px;
  height:76px;
  transition:height 240ms var(--ease);
}
.site-header.is-stuck .header-top{height:60px;}
.brand{display:flex;align-items:center;gap:12px;color:var(--text-1);flex:0 0 auto;}
.brand:hover{color:var(--text-1);}
.brand-mark{
  width:38px;height:38px;flex:0 0 auto;
  display:grid;place-items:center;
  border-radius:var(--r-btn);
  background:linear-gradient(150deg,#2C5BFF,#1637B8);
  box-shadow:0 10px 24px -12px var(--brand-glow);
  color:#fff;font-size:16px;
}
.brand-text strong{display:block;font-size:17px;font-weight:800;letter-spacing:.01em;line-height:1.3;}
.brand-text em{display:block;font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.16em;line-height:1.5;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  border-radius:10px;
  transition:color 180ms var(--ease),background 180ms var(--ease);
}
.nav-link:hover{color:var(--brand-soft);background:rgba(22,37,61,.6);}
.nav-link.active{color:var(--text-1);font-weight:700;}
.nav-link.active::after{
  content:"";
  position:absolute;left:12px;right:12px;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 10px 2px var(--brand-glow);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:var(--r-btn);
  background:rgba(22,37,61,.7);
  border:1px solid var(--line-1);
  color:var(--text-2);
  cursor:pointer;
  transition:all 180ms var(--ease);
}
.icon-btn:hover{color:var(--text-1);border-color:var(--line-2);background:var(--bg-2);}
.icon-btn:active{transform:translateY(1px);}
.hot-entry{
  display:inline-flex;align-items:center;gap:6px;
  height:38px;padding:0 14px;
  border-radius:var(--r-btn);
  font-size:14px;font-weight:600;
  color:#FFB48A;
  background:rgba(255,122,61,.12);
  border:1px solid rgba(255,122,61,.35);
  transition:all 180ms var(--ease);
}
.hot-entry:hover{color:#FFC7A5;background:rgba(255,122,61,.18);border-color:rgba(255,122,61,.55);}
.burger{display:none;}

/* 趋势条 */
.trend-bar{
  border-top:1px solid var(--line-1);
  background:rgba(11,21,36,.5);
}
.trend-inner{
  display:flex;
  align-items:center;
  gap:10px;
  height:44px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.trend-inner::-webkit-scrollbar{display:none;}
.trend-label{
  flex:0 0 auto;
  font-size:11px;
  letter-spacing:.22em;
  color:var(--text-3);
  padding-right:4px;
}
.pill{
  flex:0 0 auto;
  display:inline-flex;align-items:center;
  height:28px;padding:0 12px;
  border-radius:999px;
  font-size:12px;
  color:var(--text-2);
  background:rgba(22,37,61,.7);
  border:1px solid var(--line-1);
  white-space:nowrap;
  transition:all 180ms var(--ease);
}
.pill:hover{color:var(--text-1);border-color:var(--line-2);background:var(--bg-2);}

/* 搜索面板 */
.search-panel{
  display:none;
  border-top:1px solid var(--line-1);
  background:rgba(8,16,28,.94);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.search-panel.open{display:block;}
.search-panel .container{padding-top:20px;padding-bottom:22px;}
.search-field{display:flex;gap:10px;}
.search-field input{
  flex:1 1 auto;min-width:0;height:46px;
  padding:0 16px;
  border-radius:var(--r-btn);
  background:var(--bg-3);
  border:1px solid var(--line-1);
  color:var(--text-1);
  font-size:15px;
  outline:none;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.search-field input::placeholder{color:var(--text-3);}
.search-field input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(44,91,255,.18);}
.search-labels{
  margin:16px 0 10px;
  font-size:12px;
  letter-spacing:.2em;
  color:var(--text-3);
}
.search-tags{display:flex;flex-wrap:wrap;gap:8px;}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:1060;
  display:none;
  flex-direction:column;
  padding:20px;
  overflow-y:auto;
  background:rgba(5,10,20,.96);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.mobile-drawer.open{display:flex;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px;}
.drawer-search{display:flex;gap:8px;margin-bottom:22px;}
.drawer-search input{
  flex:1 1 auto;min-width:0;height:44px;padding:0 14px;
  border-radius:var(--r-btn);
  background:var(--bg-3);border:1px solid var(--line-1);
  color:var(--text-1);font-size:15px;outline:none;
}
.drawer-search input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(44,91,255,.18);}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  font-size:20px;
  line-height:56px;
  color:var(--text-1);
  border-bottom:1px solid var(--line-1);
}
.drawer-nav a.active{color:var(--brand-soft);}
.drawer-cta{margin-top:auto;padding-top:24px;}

/* ===== 通用组件 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;
  text-align:center;
  cursor:pointer;
  transition:all 180ms var(--ease);
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-primary-glow{
  background:linear-gradient(135deg,#2C5BFF,#6E8FFF);
  color:#fff;
  box-shadow:0 10px 30px -8px var(--brand-glow);
}
.btn-primary-glow:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 14px 34px -8px var(--brand-glow);}
.btn-primary-glow:active{transform:translateY(0);}
.btn-accent{
  background:linear-gradient(135deg,#FF7A3D,#FFA06B);
  color:#2A1206;
  box-shadow:0 10px 30px -8px rgba(255,122,61,.32);
  animation:breathe 3.2s ease-in-out infinite;
}
.btn-accent:hover{color:#2A1206;transform:translateY(-1px);filter:brightness(1.05);}
.btn-ghost{
  background:transparent;
  border-color:var(--line-2);
  color:var(--text-1);
}
.btn-ghost:hover{background:var(--bg-2);color:var(--text-1);border-color:var(--line-2);}
.btn[disabled],.btn.disabled{opacity:.4;filter:saturate(.4);box-shadow:none;animation:none;pointer-events:none;}
@keyframes breathe{
  0%,100%{box-shadow:0 10px 30px -8px rgba(255,122,61,.30);}
  50%{box-shadow:0 16px 40px -6px rgba(255,122,61,.50);}
}

.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;
  color:var(--brand-soft);
}
.text-link i{transition:transform 180ms var(--ease);font-size:12px;}
.text-link:hover{color:#9DB3FF;}
.text-link:hover i{transform:translateX(3px);}

.badge-tag{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 10px;
  border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(44,91,255,.12);
  border:1px solid rgba(44,91,255,.40);
  color:#9DB3FF;
  white-space:nowrap;
}
.badge-mint{
  background:rgba(53,226,192,.12);
  border-color:rgba(53,226,192,.40);
  color:#7FEFDA;
}
.badge-accent{
  background:rgba(255,122,61,.14);
  border-color:rgba(255,122,61,.42);
  color:#FFB48A;
}

.chip{
  display:inline-flex;align-items:center;
  height:32px;padding:0 14px;
  border-radius:999px;
  font-size:13px;
  color:var(--text-2);
  background:var(--bg-2);
  border:1px solid var(--line-1);
  transition:all 180ms var(--ease);
}
.chip:hover{color:var(--text-1);border-color:var(--line-2);}
.chip.is-on{color:#CFDCFF;background:rgba(44,91,255,.12);border-color:rgba(44,91,255,.45);}

.glass{
  position:relative;
  background:var(--glass);
  border:1px solid var(--line-1);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
}
.glass::before{
  content:"";
  position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(180,210,255,.45),transparent);
  pointer-events:none;
  border-radius:inherit;
}

/* ===== 主体区块 ===== */
.section{padding:88px 0;}
.section-tight{padding-top:48px;}
@media (max-width:1199px){
  .section{padding:64px 0;}
  .section-tight{padding-top:40px;}
}
@media (max-width:767px){
  .section{padding:48px 0;}
  .section-tight{padding-top:32px;}
}

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:28px;
}
.section-head h2{
  font-size:32px;
  font-weight:700;
  letter-spacing:-.01em;
  line-height:1.25;
}
.section-head p{
  margin-top:8px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  max-width:660px;
}
@media (max-width:767px){
  .section-head h2{font-size:25px;}
  .section-head p{font-size:14px;}
}

/* 面包屑 */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;
  gap:8px;
  padding:0;margin:0 0 18px;
  font-size:13px;
  color:var(--text-3);
}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:rgba(126,170,255,.35);}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand-soft);}
.crumb .current{color:var(--text-2);}

/* 页头 */
.page-head{padding:40px 0 0;}
.page-head-grid{
  display:grid;
  grid-template-columns:1fr auto;
  gap:32px;
  align-items:end;
}
.page-head h1{
  font-size:44px;
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.2;
  max-width:820px;
}
.page-head .lead{
  margin-top:14px;
  font-size:16px;
  line-height:1.8;
  color:var(--text-2);
  max-width:760px;
}
.head-aside{min-width:260px;}
.aside-label{
  display:block;
  font-size:12px;
  letter-spacing:.18em;
  color:var(--text-3);
  margin-bottom:10px;
}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;}
@media (max-width:991px){
  .page-head-grid{grid-template-columns:1fr;}
  .page-head h1{font-size:34px;}
  .head-aside{min-width:0;}
}
@media (max-width:767px){
  .page-head{padding-top:28px;}
  .page-head h1{font-size:30px;}
  .page-head .lead{font-size:15px;}
}

/* 焦点混合版式 */
.focus-row{display:flex;flex-wrap:wrap;gap:20px;}
.feature-card{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16/10;
  border-radius:var(--r-cover);
  overflow:hidden;
  border:1px solid var(--line-1);
  background:var(--bg-3);
  box-shadow:var(--shadow-card);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.feature-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
  border-color:var(--line-2);
}
.feature-media{position:absolute;inset:0;}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform 240ms var(--ease);}
.feature-card:hover .feature-media img{transform:scale(1.03);}
.feature-card::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,10,20,.10) 0%,rgba(5,10,20,.55) 42%,rgba(5,10,20,.95) 100%);
}
.feature-body{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:28px;
  display:flex;flex-direction:column;gap:12px;
}
.feature-body h3{
  font-size:26px;
  font-weight:800;
  line-height:1.4;
  color:#fff;
  max-width:620px;
}
.feature-body p{
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  max-width:600px;
}
.feature-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:13px;
  color:var(--text-3);
}
.feature-meta span{display:inline-flex;align-items:center;gap:6px;}

.side-stack{display:flex;flex-direction:column;gap:16px;height:100%;}
.side-card{
  flex:1 1 0;
  display:grid;
  grid-template-columns:118px 1fr;
  gap:16px;
  align-items:center;
  padding:14px;
  background:var(--glass);
  border:1px solid var(--line-1);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.side-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--line-2);}
.side-thumb{
  position:relative;
  aspect-ratio:1/1;
  border-radius:var(--r-sm);
  overflow:hidden;
  background:var(--bg-3);
}
.side-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 240ms var(--ease);}
.side-card:hover .side-thumb img{transform:scale(1.03);}
.side-body{display:flex;flex-direction:column;gap:8px;min-width:0;}
.side-body h3{
  font-size:16px;
  font-weight:700;
  line-height:1.5;
  color:var(--text-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.side-body .side-meta{font-size:13px;color:var(--text-3);}

@media (max-width:991px){
  .feature-body h3{font-size:22px;}
  .side-card{grid-template-columns:96px 1fr;}
}
@media (max-width:767px){
  .feature-card{aspect-ratio:4/3;}
  .feature-body{padding:20px;gap:10px;}
  .feature-body h3{font-size:19px;}
  .feature-body p{font-size:14px;}
}

/* 深度卡网格 */
.depth-card{
  display:flex;flex-direction:column;
  height:100%;
  background:var(--glass);
  border:1px solid var(--line-1);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.depth-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--line-2);}
.depth-thumb{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--bg-3);
}
.depth-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 240ms var(--ease);}
.depth-card:hover .depth-thumb img{transform:scale(1.03);}
.depth-thumb .badge-tag{position:absolute;left:14px;top:14px;z-index:2;}
.depth-body{
  display:flex;flex-direction:column;gap:10px;
  padding:20px;
  flex:1 1 auto;
}
.depth-body h3{
  font-size:18px;
  font-weight:700;
  line-height:1.5;
  color:var(--text-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.depth-body p{
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.depth-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;
  padding-top:12px;
  border-top:1px solid var(--line-1);
  font-size:13px;
  color:var(--text-3);
}
.depth-meta i{font-size:12px;color:var(--brand-soft);transition:transform 180ms var(--ease);}
.depth-card:hover .depth-meta i{transform:translateX(3px);}

/* 四类内容 */
.value-card{
  height:100%;
  padding:24px;
  background:var(--glass);
  border:1px solid var(--line-1);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.value-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--line-2);}
.value-icon{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:var(--r-btn);
  background:rgba(44,91,255,.14);
  border:1px solid rgba(44,91,255,.38);
  color:#9DB3FF;
  font-size:17px;
  margin-bottom:16px;
}
.value-card h3{font-size:18px;font-weight:700;margin-bottom:8px;}
.value-card p{font-size:14px;line-height:1.8;color:var(--text-2);}

/* 场景清单 */
.insight-split{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:32px;
  align-items:start;
}
.scene-list{background:var(--bg-1);border:1px solid var(--line-1);border-radius:var(--r-lg);padding:8px 20px;}
.scene-item{
  display:flex;gap:16px;
  padding:20px 0;
  border-bottom:1px solid var(--line-1);
}
.scene-item:last-child{border-bottom:none;}
.scene-num{
  flex:0 0 auto;
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:999px;
  border:1px solid rgba(53,226,192,.45);
  color:var(--mint);
  font-size:13px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
}
.scene-body h3{font-size:18px;font-weight:700;line-height:1.5;margin-bottom:6px;}
.scene-body p{font-size:14px;line-height:1.8;color:var(--text-2);}
.scene-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line-1);
  background:var(--bg-3);
  aspect-ratio:4/3;
  box-shadow:var(--shadow-card);
}
.scene-media img{width:100%;height:100%;object-fit:cover;}
.scene-media .badge-tag{position:absolute;left:16px;top:16px;z-index:2;}
.scene-caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:22px 20px 18px;
  background:linear-gradient(180deg,transparent,rgba(5,10,20,.92));
  font-size:14px;
  color:var(--text-2);
  line-height:1.7;
}
@media (max-width:991px){
  .insight-split{grid-template-columns:1fr;gap:20px;}
  .scene-media{order:-1;aspect-ratio:16/10;}
}

/* 步骤流程 */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.step{
  position:relative;
  padding:24px 20px;
  background:var(--glass);
  border:1px solid var(--line-1);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.step:hover{transform:translateY(-2px);border-color:var(--line-2);box-shadow:var(--shadow-hover);}
.step-num{
  font-size:13px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--mint);
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;font-weight:700;margin:10px 0 8px;}
.step p{font-size:14px;line-height:1.8;color:var(--text-2);}
@media (max-width:991px){
  .steps{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:575px){
  .steps{grid-template-columns:1fr;}
}

/* FAQ */
.accordion-item{
  background:var(--glass)!important;
  border:1px solid var(--line-1)!important;
  border-radius:var(--r-sm)!important;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.accordion-item:last-child{margin-bottom:0;}
.accordion-header{margin:0;}
.accordion-button{
  display:flex;
  align-items:center;
  gap:14px;
  width:100%;
  padding:18px 20px;
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  color:var(--text-1);
  background:transparent;
  box-shadow:none!important;
  border-radius:0!important;
  text-align:left;
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.accordion-button:not(.collapsed){
  color:var(--text-1);
  background:rgba(44,91,255,.08);
}
.accordion-button:hover{background:rgba(22,37,61,.55);}
.accordion-button::after{
  content:"+";
  flex:0 0 auto;
  margin-left:auto;
  width:auto;height:auto;
  background-image:none!important;
  font-size:22px;
  line-height:1;
  color:var(--brand-soft);
  transform:none;
  transition:transform 180ms var(--ease),color 180ms var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--mint);}
.accordion-button:focus{z-index:3;}
.accordion-body{
  padding:0 20px 20px;
  font-size:15px;
  line-height:1.9;
  color:var(--text-2);
}

/* CTA */
.cta-panel{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:30px 32px;
  background:var(--glass);
  border:1px solid var(--line-1);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.cta-panel::after{
  content:"";
  position:absolute;
  width:420px;height:420px;
  right:-160px;top:-220px;
  background:radial-gradient(circle,rgba(44,91,255,.22),transparent 66%);
  pointer-events:none;
}
.cta-text{position:relative;z-index:2;max-width:640px;}
.cta-text h2{font-size:28px;font-weight:700;line-height:1.3;}
.cta-text p{margin-top:8px;font-size:15px;color:var(--text-2);line-height:1.8;}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px;}
@media (max-width:767px){
  .cta-panel{padding:24px 20px;}
  .cta-text h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
}

/* 返回顶部 */
.to-top{
  position:fixed;
  right:20px;bottom:24px;
  width:46px;height:46px;
  display:grid;place-items:center;
  border-radius:999px;
  background:rgba(16,29,49,.86);
  border:1px solid var(--line-2);
  color:var(--text-1);
  box-shadow:0 16px 36px -18px rgba(0,0,0,.95);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:all 220ms var(--ease);
  z-index:1040;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{color:#fff;border-color:var(--brand);box-shadow:0 0 0 1px var(--brand),0 16px 36px -18px rgba(0,0,0,.95);}

/* ===== 页脚 ===== */
.site-footer{
  margin-top:24px;
  padding:64px 0 28px;
  background:#04080F;
  border-top:1px solid var(--line-1);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.4fr;
  gap:36px;
}
.footer-title{
  font-size:14px;
  font-weight:700;
  color:var(--text-1);
  letter-spacing:.06em;
  margin-bottom:16px;
}
.footer-list li{margin-bottom:10px;}
.footer-list a{font-size:14px;color:var(--text-2);}
.footer-list a:hover{color:var(--brand-soft);}
.footer-desc{font-size:14px;line-height:1.9;color:var(--text-3);margin-top:16px;max-width:320px;}
.socials{display:flex;gap:10px;margin-top:18px;}
.socials a{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:999px;
  background:rgba(22,37,61,.7);
  border:1px solid var(--line-1);
  color:var(--text-2);
  transition:all 180ms var(--ease);
}
.socials a:hover{color:var(--text-1);border-color:var(--line-2);background:var(--bg-2);}
.sub-form{display:flex;gap:8px;margin-top:14px;}
.sub-form input{
  flex:1 1 auto;min-width:0;height:38px;
  padding:0 12px;
  border-radius:var(--r-btn);
  background:var(--bg-3);
  border:1px solid var(--line-1);
  color:var(--text-1);
  font-size:14px;
  outline:none;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.sub-form input::placeholder{color:var(--text-3);}
.sub-form input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(44,91,255,.16);}
.sub-form .btn-accent{animation:none;}
.sub-hint{font-size:12px;line-height:1.7;color:var(--text-3);margin-top:10px;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid var(--line-1);
  font-size:13px;
  color:var(--text-3);
}
.legal-links{display:flex;flex-wrap:wrap;gap:16px;}
.legal-links a{font-size:13px;color:var(--text-3);}
.legal-links a:hover{color:var(--brand-soft);}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .site-footer{padding:48px 0 24px;}
}

/* ===== 响应式导航 ===== */
@media (max-width:991px){
  .main-nav{display:none;}
  .burger{display:grid;}
  .hot-entry{display:none;}
  .header-top{gap:12px;}
  .brand-text em{display:none;}
  .brand-text strong{font-size:16px;}
}
@media (max-width:575px){
  .header-top{height:64px;}
  .site-header.is-stuck .header-top{height:58px;}
  .brand-mark{width:34px;height:34px;font-size:14px;}
  .icon-btn{width:36px;height:36px;}
}

/* roulang page: category3 */
:root{
  --bg-0:#050A14;
  --bg-1:#0B1524;
  --bg-2:#101D31;
  --bg-3:#16253D;
  --brand:#2C5BFF;
  --brand-soft:#6E8FFF;
  --brand-glow:rgba(44,91,255,.45);
  --accent:#FF7A3D;
  --accent-glow:rgba(255,122,61,.42);
  --mint:#35E2C0;
  --text-1:#EAF1FF;
  --text-2:#A8B8D4;
  --text-3:#6B7C9B;
  --line-1:rgba(126,170,255,.14);
  --line-2:rgba(126,170,255,.28);
  --glass:linear-gradient(160deg,rgba(20,34,58,.86),rgba(11,21,36,.74));
  --r-lg:18px;
  --r-cover:22px;
  --r-sm:14px;
  --r-btn:12px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.9);
  --shadow-hover:0 24px 56px -22px rgba(0,0,0,.95);
  --tr:180ms cubic-bezier(.2,.7,.3,1);
  --bs-primary:#2C5BFF;
  --bs-body-bg:#050A14;
  --bs-body-color:#EAF1FF;
  --bs-border-color:rgba(126,170,255,.14);
  --bs-link-color:#6E8FFF;
  --bs-link-hover-color:#EAF1FF;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  word-break:normal;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;}
a{color:var(--brand-soft);text-decoration:none;transition:color var(--tr);}
a:hover{color:var(--text-1);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--text-1);letter-spacing:-.01em;margin:0;}
p{margin:0 0 1.1em;color:var(--text-2);}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(44,91,255,.35);color:#fff;}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;box-shadow:0 0 0 6px rgba(53,226,192,.18);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(5,10,20,.72);
  backdrop-filter:blur(10px) saturate(130%);
  -webkit-backdrop-filter:blur(10px) saturate(130%);
  border-bottom:1px solid transparent;
  transition:background var(--tr),border-color var(--tr),box-shadow var(--tr);
}
.site-header.is-scrolled{
  background:rgba(5,10,20,.82);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:var(--line-1);
  box-shadow:0 18px 40px -26px rgba(0,0,0,.95);
}
.header-top{display:flex;align-items:center;gap:26px;min-height:76px;transition:min-height 240ms ease;}
.site-header.is-scrolled .header-top{min-height:60px;}
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand),#1B3BB8);
  color:#fff;font-size:16px;
  box-shadow:0 10px 30px -8px var(--brand-glow);
  border:1px solid rgba(126,170,255,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:17px;font-weight:800;color:var(--text-1);letter-spacing:0;}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.06em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto;}
.main-nav .nav-link{
  position:relative;display:inline-block;padding:8px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--text-2);white-space:nowrap;
  transition:color var(--tr),background var(--tr);
}
.main-nav .nav-link:hover{color:var(--brand-soft);background:rgba(126,170,255,.06);}
.main-nav .nav-link.active{color:var(--text-1);font-weight:700;}
.main-nav .nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px 1px var(--brand-glow);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(126,170,255,.06);border:1px solid var(--line-1);color:var(--text-2);
  font-size:15px;cursor:pointer;transition:all var(--tr);
}
.icon-btn:hover{color:var(--text-1);border-color:var(--line-2);background:var(--bg-2);}
.hot-entry{
  display:inline-flex;align-items:center;gap:6px;height:38px;padding:0 16px;border-radius:999px;
  font-size:13px;font-weight:600;color:var(--accent);
  background:rgba(255,122,61,.12);border:1px solid rgba(255,122,61,.38);
  transition:all var(--tr);
}
.hot-entry:hover{background:rgba(255,122,61,.2);color:#fff;}
.burger{display:none;}

.trend-bar{border-top:1px solid var(--line-1);}
.trend-inner{display:flex;align-items:center;gap:10px;height:44px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;}
.trend-inner::-webkit-scrollbar{display:none;}
.trend-label{font-size:12px;color:var(--text-3);letter-spacing:.14em;flex:0 0 auto;}
.pill{
  flex:0 0 auto;display:inline-block;padding:3px 13px;border-radius:999px;
  font-size:12px;color:var(--text-2);border:1px solid var(--line-1);
  background:rgba(126,170,255,.04);white-space:nowrap;transition:all var(--tr);
}
.pill:hover{color:var(--text-1);border-color:var(--line-2);background:rgba(44,91,255,.14);}

.search-panel{
  display:none;position:absolute;left:0;right:0;top:100%;
  background:linear-gradient(160deg,rgba(20,34,58,.96),rgba(11,21,36,.94));
  border-top:1px solid var(--line-1);border-bottom:1px solid var(--line-1);
  box-shadow:0 24px 56px -22px rgba(0,0,0,.95);
  padding:22px 0 26px;
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
}
.search-panel.open{display:block;}
.search-field{display:flex;gap:12px;}
.search-field input{
  flex:1 1 auto;height:46px;border-radius:12px;background:var(--bg-3);
  border:1px solid var(--line-1);color:var(--text-1);padding:0 16px;font-size:15px;
  transition:all var(--tr);
}
.search-field input::placeholder{color:var(--text-3);}
.search-field input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(44,91,255,.2);}
.search-labels{margin:18px 0 10px;font-size:12px;letter-spacing:.14em;color:var(--text-3);}
.search-tags{display:flex;flex-wrap:wrap;gap:10px;}

.mobile-drawer{
  display:none;position:fixed;inset:0;z-index:1060;
  background:rgba(5,10,20,.96);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  padding:20px 20px 28px;overflow-y:auto;
}
.mobile-drawer.open{display:block;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-list{margin-top:12px;}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  font-size:20px;font-weight:600;color:var(--text-1);
  padding:0 4px;height:56px;border-bottom:1px solid var(--line-1);
}
.drawer-list a.active{color:var(--brand-soft);}
.drawer-list a i{font-size:13px;color:var(--text-3);}
.drawer-cta{margin-top:24px;}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:12px;font-weight:600;font-size:15px;padding:0 22px;height:44px;border:1px solid transparent;transition:all var(--tr);cursor:pointer;line-height:1;}
.btn:focus{box-shadow:none;}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:12px;}
.btn-primary-glow{
  background:linear-gradient(140deg,#3E6BFF,#1F45D6);color:#fff;
  box-shadow:0 10px 30px -8px var(--brand-glow);
}
.btn-primary-glow:hover{color:#fff;transform:translateY(-1px);box-shadow:0 14px 34px -8px var(--brand-glow);}
.btn-accent{
  background:linear-gradient(140deg,#FF8F5A,#F2601F);color:#1A0A02;
  box-shadow:0 10px 30px -8px var(--accent-glow);
  animation:breathe 3.2s ease-in-out infinite;
}
.btn-accent:hover{color:#1A0A02;transform:translateY(-1px);box-shadow:0 14px 34px -6px var(--accent-glow);}
@keyframes breathe{0%,100%{box-shadow:0 10px 30px -8px rgba(255,122,61,.34);}50%{box-shadow:0 12px 34px -6px rgba(255,122,61,.52);}}
.btn-ghost{
  background:transparent;color:var(--text-1);border-color:var(--line-2);
}
.btn-ghost:hover{background:var(--bg-2);color:var(--text-1);border-color:var(--line-2);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-soft);}
.link-arrow i{font-size:12px;transition:transform var(--tr);}
.link-arrow:hover i{transform:translateX(3px);}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section-tight{padding:56px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px;flex-wrap:wrap;}
.section-head h2{font-size:31px;font-weight:700;line-height:1.25;}
.section-head .sub{font-size:14px;color:var(--text-3);margin-top:8px;line-height:1.7;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.16em;color:var(--brand-soft);margin-bottom:14px;}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand);box-shadow:0 0 8px var(--brand-glow);}

.glass-card{
  background:var(--glass);
  border:1px solid var(--line-1);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.glass-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(174,204,255,.45),transparent);
  pointer-events:none;
}

.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;line-height:1;white-space:nowrap;
}
.tag-blue{color:var(--brand-soft);background:rgba(44,91,255,.12);border:1px solid rgba(44,91,255,.36);}
.tag-mint{color:var(--mint);background:rgba(53,226,192,.12);border:1px solid rgba(53,226,192,.34);}
.tag-accent{color:var(--accent);background:rgba(255,122,61,.12);border:1px solid rgba(255,122,61,.36);}

/* ============ 页头 ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:52px 0 46px;
  border-bottom:1px solid var(--line-1);
  background:linear-gradient(180deg,rgba(16,29,49,.72),rgba(5,10,20,0) 80%);
}
.page-hero::before{
  content:"";position:absolute;width:520px;height:520px;right:-140px;top:-240px;border-radius:50%;
  background:radial-gradient(circle,rgba(44,91,255,.16),transparent 70%);
  pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(126,170,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(126,170,255,.04) 1px,transparent 1px);
  background-size:32px 32px;
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb-line{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--text-3);margin-bottom:18px;flex-wrap:wrap;}
.breadcrumb-line a{color:var(--text-3);}
.breadcrumb-line a:hover{color:var(--brand-soft);}
.breadcrumb-line .sep{color:rgba(126,170,255,.32);}
.page-hero h1{font-size:44px;line-height:1.2;font-weight:800;max-width:760px;}
.page-hero .lead{font-size:16px;color:var(--text-2);margin-top:16px;max-width:660px;line-height:1.8;}
.hero-flex{display:flex;align-items:flex-end;justify-content:space-between;gap:36px;flex-wrap:wrap;}
.hero-side{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.hero-stats{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap;}
.stat-chip{
  display:flex;align-items:center;gap:10px;padding:10px 18px;border-radius:var(--r-sm);
  background:rgba(16,29,49,.7);border:1px solid var(--line-1);
}
.stat-chip b{font-size:19px;font-weight:800;color:var(--mint);font-variant-numeric:tabular-nums;}
.stat-chip span{font-size:12px;color:var(--text-3);}

/* ============ 筛选条 ============ */
.filter-bar{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  padding:16px 20px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line-1);
  box-shadow:var(--shadow-card);margin-bottom:26px;
}
.chip-group{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 15px;border-radius:999px;
  font-size:13px;color:var(--text-2);border:1px solid var(--line-1);
  background:rgba(126,170,255,.04);cursor:pointer;transition:all var(--tr);
}
.chip:hover{color:var(--text-1);border-color:var(--line-2);}
.chip.active{color:var(--text-1);background:rgba(44,91,255,.12);border-color:rgba(44,91,255,.45);}
.filter-search{margin-left:auto;display:flex;gap:10px;flex:1 1 260px;max-width:340px;}
.filter-search input{
  width:100%;height:38px;border-radius:12px;background:var(--bg-3);
  border:1px solid var(--line-1);color:var(--text-1);padding:0 14px;font-size:14px;
  transition:all var(--tr);
}
.filter-search input::placeholder{color:var(--text-3);}
.filter-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(44,91,255,.18);}

/* ============ 榜单 ============ */
.rank-panel{
  background:var(--glass);border:1px solid var(--line-1);border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.rank-head{
  display:grid;grid-template-columns:64px 1fr 220px 120px 32px;gap:16px;
  padding:14px 24px;border-bottom:1px solid var(--line-1);
  font-size:12px;letter-spacing:.1em;color:var(--text-3);
}
.rank-row{
  position:relative;display:grid;grid-template-columns:64px 1fr 220px 120px 32px;gap:16px;align-items:center;
  padding:0 24px;min-height:72px;border-bottom:1px solid var(--line-1);
  transition:background var(--tr);
}
.rank-row:last-child{border-bottom:none;}
.rank-row::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:0 3px 3px 0;
  background:var(--brand);opacity:0;transition:opacity var(--tr);box-shadow:0 0 12px var(--brand-glow);
}
.rank-row:hover{background:var(--bg-2);}
.rank-row:hover::before{opacity:1;}
.rank-row:hover .rank-arrow{color:var(--brand-soft);transform:translateX(3px);}
.rank-medal{
  width:40px;height:40px;border-radius:999px;display:grid;place-items:center;
  font-size:14px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--text-3);
  background:var(--bg-2);border:1px solid var(--line-1);
}
.rank-medal.top{
  color:#fff;
  border:1px solid transparent;
  background-image:linear-gradient(var(--bg-2),var(--bg-2)),linear-gradient(140deg,var(--mint),var(--brand));
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 0 18px -6px rgba(53,226,192,.6);
}
.rank-medal.top span{color:var(--mint);}
.rank-main h3{font-size:17px;font-weight:700;line-height:1.5;}
.rank-main .rank-note{font-size:13px;color:var(--text-3);margin-top:2px;line-height:1.6;}
.rank-tags{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap;}
.rank-score{display:flex;align-items:center;gap:12px;}
.score-bar{
  flex:1 1 auto;height:6px;border-radius:999px;background:rgba(126,170,255,.12);overflow:hidden;
}
.score-bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,rgba(53,226,192,.65),var(--mint));box-shadow:0 0 10px rgba(53,226,192,.5);}
.score-num{font-size:15px;font-weight:800;color:var(--mint);font-variant-numeric:tabular-nums;min-width:32px;text-align:right;}
.rank-time{font-size:13px;color:var(--text-3);}
.rank-arrow{font-size:13px;color:var(--text-3);transition:all var(--tr);}

/* ============ 分栏区块 ============ */
.split{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch;}
.metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:24px;}
.metric{
  padding:18px 18px 16px;border-radius:var(--r-sm);background:var(--bg-2);border:1px solid var(--line-1);
}
.metric b{display:block;font-size:26px;font-weight:800;color:var(--mint);font-variant-numeric:tabular-nums;line-height:1.2;}
.metric span{display:block;font-size:12px;color:var(--text-3);margin-top:6px;}
.dim-list li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line-1);
}
.dim-list li:last-child{border-bottom:none;}
.dim-index{
  flex:0 0 auto;width:30px;height:30px;border-radius:999px;display:grid;place-items:center;
  font-size:12px;font-weight:700;color:var(--mint);border:1px solid rgba(53,226,192,.4);
  font-variant-numeric:tabular-nums;
}
.dim-list h4{font-size:16px;font-weight:700;margin-bottom:2px;}
.dim-list p{font-size:14px;margin:0;color:var(--text-2);line-height:1.75;}
.media-card{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-1);background:var(--bg-3);min-height:100%;}
.media-card img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform 220ms var(--tr);}
.media-card:hover img{transform:scale(1.03);}
.media-card .media-overlay{
  position:absolute;inset:auto 0 0 0;padding:22px;
  background:linear-gradient(180deg,rgba(5,10,20,0),rgba(5,10,20,.92));
}
.media-card h3{font-size:18px;font-weight:700;line-height:1.5;}
.media-card p{font-size:13px;color:var(--text-2);margin:6px 0 0;line-height:1.6;}

/* ============ 口碑横滑 ============ */
.rail{
  display:flex;gap:18px;overflow-x:auto;padding:4px 4px 18px;
  scroll-snap-type:x proximity;scrollbar-width:none;-ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none;}
.review-card{
  flex:0 0 auto;width:320px;scroll-snap-align:start;
  padding:20px;border-radius:var(--r-lg);background:var(--glass);
  border:1px solid var(--line-1);box-shadow:var(--shadow-card);transition:all var(--tr);
}
.review-card:hover{transform:translateY(-2px);border-color:var(--line-2);box-shadow:var(--shadow-hover);}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{
  width:44px;height:44px;border-radius:999px;flex:0 0 auto;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(44,91,255,.5),rgba(53,226,192,.35));
  border:1px solid var(--line-2);font-size:15px;font-weight:700;color:#fff;
}
.review-top strong{display:block;font-size:15px;font-weight:600;line-height:1.3;}
.stars{display:flex;gap:3px;margin-top:3px;color:var(--mint);font-size:11px;}
.review-card p{font-size:14px;line-height:1.8;color:var(--text-2);margin:0 0 12px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.review-meta{font-size:13px;color:var(--text-3);display:flex;align-items:center;justify-content:space-between;}

/* ============ 步骤 ============ */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.step-card{
  padding:22px;border-radius:var(--r-lg);background:var(--bg-1);
  border:1px solid var(--line-1);transition:all var(--tr);height:100%;
}
.step-card:hover{transform:translateY(-2px);border-color:var(--line-2);box-shadow:var(--shadow-hover);}
.step-card .s-no{font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--brand-soft);}
.step-card h3{font-size:17px;font-weight:700;margin:10px 0 8px;}
.step-card p{font-size:14px;margin:0;line-height:1.75;color:var(--text-2);}

/* ============ FAQ ============ */
.faq-acc .accordion-item{
  background:var(--glass);border:1px solid var(--line-1);border-radius:var(--r-sm) !important;
  margin-bottom:12px;overflow:hidden;
}
.faq-acc .accordion-button{
  background:transparent;color:var(--text-1);font-size:17px;font-weight:600;
  padding:18px 22px;box-shadow:none;border:none;line-height:1.6;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--text-1);background:rgba(44,91,255,.06);}
.faq-acc .accordion-button::after{
  content:"+";font-size:22px;font-weight:400;line-height:1;
  width:auto;height:auto;background-image:none;color:var(--brand-soft);
  transform:none;transition:transform var(--tr),color var(--tr);margin-left:16px;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--text-1);}
.faq-acc .accordion-button:focus{box-shadow:none;border:none;}
.faq-acc .accordion-body{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--text-2);}

/* ============ CTA ============ */
.cta-panel{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:30px 34px;border-radius:var(--r-lg);
  background:linear-gradient(140deg,rgba(20,34,58,.92),rgba(11,21,36,.86));
  border:1px solid var(--line-2);box-shadow:var(--shadow-card);position:relative;overflow:hidden;
}
.cta-panel::before{
  content:"";position:absolute;width:420px;height:420px;left:-120px;bottom:-260px;border-radius:50%;
  background:radial-gradient(circle,rgba(44,91,255,.18),transparent 70%);pointer-events:none;
}
.cta-panel h2{font-size:26px;font-weight:700;position:relative;}
.cta-panel p{font-size:14px;color:var(--text-2);margin:8px 0 0;position:relative;}
.cta-panel .btn{position:relative;}

/* ============ 页脚 ============ */
.site-footer{
  background:#04080F;border-top:1px solid var(--line-1);
  padding:64px 0 26px;margin-top:10px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:36px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-desc{font-size:14px;color:var(--text-2);line-height:1.8;max-width:280px;margin:0 0 18px;}
.socials{display:flex;gap:10px;}
.socials a{
  width:38px;height:38px;border-radius:999px;display:grid;place-items:center;
  background:rgba(126,170,255,.06);border:1px solid var(--line-1);color:var(--text-2);font-size:14px;
  transition:all var(--tr);
}
.socials a:hover{color:var(--text-1);border-color:var(--line-2);background:var(--bg-2);box-shadow:0 0 18px -6px var(--brand-glow);}
.footer-title{font-size:15px;font-weight:700;color:var(--text-1);margin-bottom:16px;}
.footer-list li{margin-bottom:10px;}
.footer-list a{font-size:14px;color:var(--text-2);}
.footer-list a:hover{color:var(--brand-soft);}
.sub-form{display:flex;gap:10px;margin-bottom:12px;}
.sub-form input{
  flex:1 1 auto;min-width:0;height:38px;border-radius:12px;background:var(--bg-3);
  border:1px solid var(--line-1);color:var(--text-1);padding:0 14px;font-size:14px;
  transition:all var(--tr);
}
.sub-form input::placeholder{color:var(--text-3);}
.sub-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(44,91,255,.18);}
.sub-hint{font-size:12px;color:var(--text-3);line-height:1.7;margin:0;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-1);
  font-size:13px;color:var(--text-3);
}
.legal-links{display:flex;gap:18px;flex-wrap:wrap;}
.legal-links a{font-size:13px;color:var(--text-3);}
.legal-links a:hover{color:var(--brand-soft);}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .container{max-width:1320px;}
}
@media (max-width:1199px){
  .rank-head,.rank-row{grid-template-columns:56px 1fr 180px 32px;}
  .rank-head .col-time,.rank-time{display:none;}
  .split{grid-template-columns:1fr;}
  .step-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .burger{display:grid;}
  .hot-entry{display:none;}
  .page-hero h1{font-size:36px;}
  .section{padding:64px 0;}
  .section-head h2{font-size:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .header-top{min-height:64px;gap:14px;}
  .brand-text strong{font-size:15px;}
  .brand-text em{font-size:10px;}
  .page-hero{padding:36px 0 34px;}
  .page-hero h1{font-size:30px;}
  .page-hero .lead{font-size:15px;}
  .section{padding:48px 0;}
  .section-head h2{font-size:24px;}
  .rank-head{display:none;}
  .rank-row{
    grid-template-columns:1fr;gap:10px;padding:18px 20px;min-height:auto;
  }
  .rank-medal{width:34px;height:34px;font-size:13px;}
  .rank-score{width:100%;}
  .rank-arrow{display:none;}
  .metric-grid{grid-template-columns:1fr;}
  .step-grid{grid-template-columns:1fr;}
  .review-card{width:80vw;}
  .cta-panel{padding:24px 20px;}
  .cta-panel h2{font-size:22px;}
  .cta-panel .btn{width:100%;}
  .filter-search{max-width:none;margin-left:0;width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-desc{max-width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .hero-stats{flex-direction:column;align-items:stretch;}
  .stat-chip{justify-content:space-between;}
  .sub-form{flex-wrap:wrap;}
  .sub-form input{flex:1 1 100%;}
  .sub-form .btn{width:100%;}
  .search-field{flex-wrap:wrap;}
  .search-field .btn{width:100%;}
}

/* roulang page: category4 */
:root{
  --bg-0:#050A14;
  --bg-1:#0B1524;
  --bg-2:#101D31;
  --bg-3:#16253D;
  --brand:#2C5BFF;
  --brand-soft:#6E8FFF;
  --brand-glow:rgba(44,91,255,.45);
  --accent:#FF7A3D;
  --accent-glow:rgba(255,122,61,.42);
  --mint:#35E2C0;
  --text-1:#EAF1FF;
  --text-2:#A8B8D4;
  --text-3:#6B7C9B;
  --line-1:rgba(126,170,255,.14);
  --line-2:rgba(126,170,255,.28);
  --glass:linear-gradient(160deg,rgba(20,34,58,.86),rgba(11,21,36,.74));
  --r-lg:18px;
  --r-xl:22px;
  --r-sm:14px;
  --r-btn:12px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.9);
  --shadow-lift:0 24px 56px -22px rgba(0,0,0,.95);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-body-bg:#050A14;
  --bs-body-color:#EAF1FF;
  --bs-border-color:rgba(126,170,255,.14);
  --bs-primary:#2C5BFF;
  --bs-primary-rgb:44,91,255;
  --bs-link-color:#6E8FFF;
  --bs-link-hover-color:#EAF1FF;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:110px}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
a{color:var(--brand-soft);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--text-1)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;box-shadow:0 0 10px rgba(53,226,192,.55)}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(5,10,20,.92);
  border-bottom:1px solid var(--line-1);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.scrolled{
  background:rgba(5,10,20,.82);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:0 14px 34px -22px rgba(0,0,0,.95);
}
.header-top{
  display:flex;
  align-items:center;
  gap:22px;
  min-height:76px;
  padding-top:12px;
  padding-bottom:12px;
  transition:min-height .24s var(--ease),padding .24s var(--ease);
}
.site-header.scrolled .header-top{min-height:60px;padding-top:6px;padding-bottom:6px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand),var(--brand-soft));
  color:#fff;font-size:15px;
  box-shadow:0 8px 24px -10px var(--brand-glow);
}
.brand-text strong{display:block;font-size:17px;font-weight:800;line-height:1.25;color:var(--text-1)}
.brand-text em{display:block;font-style:normal;font-size:11px;line-height:1.4;color:var(--text-3);letter-spacing:.14em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  color:var(--text-2);
  border-radius:10px;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-link:hover{color:var(--brand-soft);background:rgba(44,91,255,.08)}
.nav-link.active{color:var(--text-1);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;
  border-radius:2px;background:var(--brand);box-shadow:0 0 6px var(--brand-glow);
}
.header-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:var(--bg-2);
  border:1px solid var(--line-1);
  color:var(--text-2);
  cursor:pointer;
  transition:all .18s var(--ease);
}
.icon-btn:hover{color:var(--text-1);border-color:var(--line-2);background:var(--bg-3)}
.hot-entry{
  display:inline-flex;align-items:center;gap:6px;
  height:38px;padding:0 14px;border-radius:999px;
  font-size:13px;color:var(--accent);
  background:rgba(255,122,61,.12);
  border:1px solid rgba(255,122,61,.34);
  transition:all .18s var(--ease);
}
.hot-entry:hover{background:rgba(255,122,61,.2);color:#FFD3BE}
.burger{display:none}
/* ---------- trend bar ---------- */
.trend-bar{border-top:1px solid var(--line-1);background:rgba(11,21,36,.55)}
.trend-inner{
  display:flex;align-items:center;gap:10px;
  padding-top:10px;padding-bottom:10px;
  overflow-x:auto;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
}
.trend-inner::-webkit-scrollbar{display:none}
.trend-label{
  flex-shrink:0;font-size:12px;color:var(--text-3);
  letter-spacing:.16em;padding-right:6px;border-right:1px solid var(--line-1);
}
.pill{
  flex-shrink:0;
  display:inline-block;
  padding:5px 14px;
  font-size:12px;
  border-radius:999px;
  color:var(--text-2);
  background:rgba(44,91,255,.1);
  border:1px solid var(--line-1);
  transition:all .18s var(--ease);
  white-space:nowrap;
}
.pill:hover{color:var(--text-1);background:rgba(44,91,255,.2);border-color:var(--line-2)}
/* ---------- search panel ---------- */
.search-panel{
  display:none;
  background:rgba(8,15,26,.96);
  border-top:1px solid var(--line-1);
  box-shadow:0 26px 50px -30px rgba(0,0,0,.95);
}
.search-panel.open{display:block;animation:fadeDown .22s var(--ease)}
@keyframes fadeDown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
.search-panel .container{padding-top:20px;padding-bottom:22px}
.search-field{display:flex;gap:10px}
.search-field input{
  flex:1;
  height:46px;
  padding:0 16px;
  font-size:15px;
  color:var(--text-1);
  background:var(--bg-3);
  border:1px solid var(--line-1);
  border-radius:var(--r-btn);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-field input::placeholder{color:var(--text-3)}
.search-field input:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(44,91,255,.2);
}
.search-labels{font-size:12px;color:var(--text-3);letter-spacing:.12em;margin:18px 0 10px}
.search-panel .pill-row{display:flex;flex-wrap:wrap;gap:8px}
.recent-list{display:flex;flex-direction:column;gap:6px;margin-top:4px}
.recent-list a{font-size:14px;color:var(--text-2)}
.recent-list a:hover{color:var(--brand-soft)}
/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;
  font-size:15px;font-weight:600;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn-primary-glow{
  color:#fff;
  background:linear-gradient(135deg,var(--brand),#4C77FF);
  box-shadow:0 10px 30px -8px var(--brand-glow);
}
.btn-primary-glow:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 38px -10px var(--brand-glow)}
.btn-accent{
  color:#1A0C05;
  background:linear-gradient(135deg,#FF9A5E,var(--accent));
  box-shadow:0 10px 30px -8px var(--accent-glow);
}
.btn-accent:hover{color:#1A0C05;transform:translateY(-2px);box-shadow:0 16px 38px -10px var(--accent-glow)}
.btn-accent-glow{animation:breathe 3.2s ease-in-out infinite}
@keyframes breathe{0%,100%{box-shadow:0 10px 30px -8px var(--accent-glow)}50%{box-shadow:0 14px 40px -6px rgba(255,122,61,.62)}}
.btn-ghost{
  color:var(--text-1);
  background:transparent;
  border-color:var(--line-2);
}
.btn-ghost:hover{background:var(--bg-2);color:var(--text-1);border-color:var(--line-2)}
.btn:active{transform:translateY(0)}
/* ---------- page head ---------- */
.page-head{
  position:relative;
  padding:44px 0 40px;
  border-bottom:1px solid var(--line-1);
  overflow:hidden;
}
.page-head::before{
  content:"";
  position:absolute;inset:0;
  background:url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  opacity:.16;
  z-index:0;
}
.page-head::after{
  content:"";
  position:absolute;left:-140px;bottom:-220px;
  width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,var(--brand-glow),transparent 68%);
  opacity:.2;
  z-index:0;
}
.page-head .container{position:relative;z-index:1}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;flex-wrap:wrap}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--brand-soft)}
.crumbs .sep{color:rgba(107,124,155,.55)}
.crumbs .current{color:var(--text-2)}
.page-head-row{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start}
.eyebrow{
  display:inline-block;
  font-size:12px;letter-spacing:.18em;
  color:var(--mint);
  padding:3px 12px;
  border-radius:999px;
  background:rgba(53,226,192,.1);
  border:1px solid rgba(53,226,192,.32);
  margin-bottom:16px;
}
.page-head h1{
  font-size:clamp(30px,3.4vw,44px);
  line-height:1.2;
  font-weight:800;
  letter-spacing:-.01em;
  margin-bottom:14px;
}
.page-sub{font-size:16px;line-height:1.8;color:var(--text-2);max-width:620px}
.head-side{
  background:var(--glass);
  border:1px solid var(--line-1);
  border-radius:var(--r-lg);
  padding:20px;
  box-shadow:var(--shadow-card);
  position:relative;
}
.head-side::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(160,200,255,.42),transparent);
}
.side-title{font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:6px}
.side-desc{font-size:13px;line-height:1.7;color:var(--text-3);margin-bottom:14px}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-block;padding:5px 12px;font-size:12px;border-radius:999px;
  color:var(--text-2);background:rgba(44,91,255,.1);
  border:1px solid var(--line-1);
  transition:all .18s var(--ease);
}
.chip:hover{color:var(--text-1);background:rgba(44,91,255,.22);border-color:var(--line-2)}
/* ---------- guide layout ---------- */
.guide-layout{
  display:grid;
  grid-template-columns:220px minmax(0,1fr);
  gap:48px;
  padding-top:56px;
  padding-bottom:88px;
}
.guide-toc{position:sticky;top:96px;align-self:start}
.toc-card{
  background:var(--glass);
  border:1px solid var(--line-1);
  border-radius:var(--r-lg);
  padding:16px 12px;
  box-shadow:var(--shadow-card);
}
.toc-title{
  font-size:12px;letter-spacing:.16em;color:var(--text-3);
  padding:0 12px 10px;margin-bottom:8px;border-bottom:1px solid var(--line-1);
}
.toc-nav{display:flex;flex-direction:column;gap:2px}
.toc-nav a{
  display:block;
  padding:9px 12px;
  font-size:14px;
  color:var(--text-2);
  border-left:2px solid transparent;
  border-radius:0 10px 10px 0;
  transition:all .18s var(--ease);
}
.toc-nav a:hover{color:var(--text-1);background:var(--bg-2)}
.toc-nav a.is-active{
  color:var(--text-1);
  font-weight:600;
  border-left-color:var(--brand);
  background:rgba(44,91,255,.13);
  box-shadow:inset 2px 0 10px -4px var(--brand-glow);
}
.toc-help{
  margin-top:14px;padding:16px;
  border-radius:var(--r-sm);
  background:var(--bg-2);
  border:1px solid var(--line-1);
}
.toc-help p{font-size:13px;line-height:1.7;color:var(--text-3);margin-bottom:12px}
.guide-body{max-width:820px;min-width:0}
.guide-section{
  padding:34px 0 8px;
  border-top:1px solid var(--line-1);
  margin-bottom:12px;
}
.guide-section:first-child{border-top:0;padding-top:0}
.guide-section h2{
  display:flex;align-items:center;gap:12px;
  font-size:clamp(24px,2.4vw,30px);
  line-height:1.3;
  font-weight:700;
  margin-bottom:16px;
}
.sec-num{
  flex-shrink:0;
  font-size:12px;font-weight:700;
  color:var(--mint);
  font-variant-numeric:tabular-nums;
  letter-spacing:.08em;
  padding:2px 10px;
  border-radius:999px;
  border:1px solid rgba(53,226,192,.36);
  background:rgba(53,226,192,.08);
}
.guide-section h3{
  font-size:19px;
  line-height:1.5;
  font-weight:600;
  margin:26px 0 10px;
  color:var(--text-1);
}
.guide-section p{color:var(--text-2);word-break:normal}
.guide-section .lead{color:var(--text-1);font-size:17px}
.guide-figure{
  margin:26px 0;
  border-radius:var(--r-sm);
  overflow:hidden;
  border:1px solid var(--line-1);
  background:var(--bg-3);
}
.figure-box{position:relative;width:100%;aspect-ratio:16/10;overflow:hidden}
.figure-box img{width:100%;height:100%;object-fit:cover}
.guide-figure figcaption{
  font-size:13px;color:var(--text-3);
  padding:10px 14px;
  border-top:1px solid var(--line-1);
  background:rgba(11,21,36,.6);
}
.steps-inline{counter-reset:si;display:flex;flex-direction:column;gap:12px;margin:20px 0}
.steps-inline li{
  position:relative;
  padding:14px 18px 14px 52px;
  background:var(--bg-2);
  border:1px solid var(--line-1);
  border-radius:var(--r-sm);
  font-size:15px;
  color:var(--text-2);
  line-height:1.8;
}
.steps-inline li::before{
  counter-increment:si;
  content:counter(si,decimal-leading-zero);
  position:absolute;left:14px;top:14px;
  width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;
  font-size:11px;font-weight:700;
  font-variant-numeric:tabular-nums;
  color:var(--mint);
  border:1px solid rgba(53,226,192,.4);
  background:rgba(53,226,192,.08);
}
.note-box{
  margin:22px 0;
  padding:16px 20px;
  border-radius:var(--r-sm);
  background:linear-gradient(160deg,rgba(20,34,58,.7),rgba(11,21,36,.6));
  border:1px solid var(--line-1);
  border-left:3px solid var(--brand);
  font-size:14px;
  line-height:1.85;
  color:var(--text-2);
}
.note-box strong{color:var(--text-1)}
/* ---------- accordion ---------- */
.st-accordion{display:flex;flex-direction:column;gap:12px;margin-top:18px}
.st-accordion .accordion-item{
  background:var(--glass);
  border:1px solid var(--line-1);
  border-radius:var(--r-sm);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.st-accordion .accordion-item:hover{border-color:var(--line-2);box-shadow:var(--shadow-lift)}
.st-accordion .accordion-header{margin:0}
.st-accordion .accordion-button{
  position:relative;
  width:100%;
  display:block;
  text-align:left;
  padding:16px 52px 16px 18px;
  font-size:17px;
  font-weight:600;
  line-height:1.55;
  color:var(--text-1);
  background:transparent;
  border:0;
  box-shadow:none;
  cursor:pointer;
  transition:color .18s var(--ease);
}
.st-accordion .accordion-button:hover{color:var(--brand-soft)}
.st-accordion .accordion-button:not(.collapsed){color:var(--text-1)}
.st-accordion .accordion-button::after{display:none}
.st-accordion .accordion-button::before{
  content:"+";
  position:absolute;right:18px;top:50%;
  transform:translateY(-50%);
  width:22px;height:22px;
  display:grid;place-items:center;
  font-size:16px;font-weight:400;line-height:1;
  color:var(--brand-soft);
  border-radius:50%;
  border:1px solid var(--line-2);
  transition:transform .22s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.st-accordion .accordion-button:not(.collapsed)::before{
  transform:translateY(-50%) rotate(45deg);
  color:var(--accent);
  border-color:rgba(255,122,61,.5);
}
.st-accordion .accordion-body{
  padding:0 18px 18px;
  font-size:15px;
  line-height:1.9;
  color:var(--text-2);
}
.st-accordion .accordion-body p{margin-bottom:.8em}
.st-accordion .accordion-body p:last-child{margin-bottom:0}
/* ---------- CTA panel ---------- */
.cta-panel{padding-bottom:88px}
.cta-inner{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:32px 36px;
  border-radius:var(--r-xl);
  background:linear-gradient(150deg,rgba(20,34,58,.9),rgba(11,21,36,.78));
  border:1px solid var(--line-1);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.cta-inner::before{
  content:"";position:absolute;right:-120px;top:-120px;
  width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,var(--accent-glow),transparent 68%);
  opacity:.22;
}
.cta-inner::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(160,200,255,.4),transparent);
}
.cta-inner h2{font-size:26px;line-height:1.35;margin-bottom:8px;position:relative;z-index:1}
.cta-inner p{font-size:15px;color:var(--text-2);margin:0;max-width:560px;position:relative;z-index:1}
.cta-inner .btn{position:relative;z-index:1;flex-shrink:0}
/* ---------- to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;
  width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--glass);
  border:1px solid var(--line-2);
  color:var(--text-1);
  font-size:15px;
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:all .24s var(--ease);
  z-index:1040;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--brand);color:var(--brand-soft);box-shadow:0 0 0 1px var(--brand-glow),var(--shadow-lift)}
/* ---------- mobile drawer ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:1060;
  display:none;
  background:rgba(5,10,20,.94);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  padding:24px;
  overflow-y:auto;
}
.mobile-drawer.open{display:block;animation:fadeDown .24s var(--ease)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-nav{display:flex;flex-direction:column;margin:22px 0}
.drawer-nav a{
  font-size:20px;
  line-height:56px;
  color:var(--text-1);
  border-bottom:1px solid var(--line-1);
  transition:color .18s var(--ease);
}
.drawer-nav a:hover{color:var(--brand-soft)}
.drawer-nav a.active{color:var(--brand-soft);font-weight:600}
/* ---------- footer ---------- */
.site-footer{
  background:#04080F;
  border-top:1px solid var(--line-1);
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-desc{font-size:14px;line-height:1.8;color:var(--text-3);margin:16px 0 18px;max-width:280px}
.socials{display:flex;gap:10px}
.socials a{
  width:38px;height:38px;border-radius:50%;
  display:grid;place-items:center;
  font-size:14px;
  color:var(--text-2);
  background:var(--bg-2);
  border:1px solid var(--line-1);
  transition:all .18s var(--ease);
}
.socials a:hover{color:#fff;background:var(--brand);border-color:var(--brand);box-shadow:0 0 18px -4px var(--brand-glow)}
.footer-title{font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:16px;letter-spacing:.04em}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list a{font-size:14px;color:var(--text-3)}
.footer-list a:hover{color:var(--brand-soft)}
.sub-form{display:flex;gap:8px}
.sub-form input{
  flex:1;min-width:0;height:38px;padding:0 12px;
  font-size:14px;color:var(--text-1);
  background:var(--bg-3);
  border:1px solid var(--line-1);
  border-radius:var(--r-btn);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(44,91,255,.2)}
.sub-hint{font-size:12px;line-height:1.7;color:var(--text-3);margin-top:12px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0 30px;
  border-top:1px solid var(--line-1);
  font-size:13px;
  color:var(--text-3);
  flex-wrap:wrap;
}
.legal-links{display:flex;gap:18px;flex-wrap:wrap}
.legal-links a{font-size:13px;color:var(--text-3)}
.legal-links a:hover{color:var(--brand-soft)}
/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .container{max-width:960px}
  .guide-layout{grid-template-columns:200px minmax(0,1fr);gap:32px}
  .page-head-row{grid-template-columns:minmax(0,1fr) 290px;gap:28px}
  .main-nav{gap:0}
  .nav-link{padding:8px 9px;font-size:14px}
}
@media (max-width:991.98px){
  .container{max-width:720px}
  .main-nav{display:none}
  .hot-entry{display:none}
  .burger{display:grid}
  .header-top{gap:12px}
  .page-head-row{grid-template-columns:1fr}
  .head-side{max-width:420px}
  .guide-layout{grid-template-columns:1fr;gap:28px;padding-top:40px;padding-bottom:64px}
  .guide-toc{position:static}
  .toc-nav{flex-direction:row;flex-wrap:wrap;gap:8px}
  .toc-nav a{
    border-left:0;
    border-radius:999px;
    padding:7px 14px;
    font-size:13px;
    background:var(--bg-2);
    border:1px solid var(--line-1);
  }
  .toc-nav a.is-active{
    border-left:0;
    border-color:rgba(44,91,255,.55);
    background:rgba(44,91,255,.18);
    box-shadow:none;
  }
  .toc-help{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:26px}
}
@media (max-width:767.98px){
  body{font-size:15px}
  .container{max-width:100%;padding-left:20px;padding-right:20px}
  .header-top{min-height:64px}
  .brand-text strong{font-size:16px}
  .brand-text em{display:none}
  .page-head{padding:30px 0 28px}
  .page-head h1{font-size:30px}
  .page-sub{font-size:15px}
  .guide-section h2{font-size:24px;gap:8px}
  .guide-section h3{font-size:17px}
  .st-accordion .accordion-button{font-size:16px;padding:14px 48px 14px 16px}
  .st-accordion .accordion-body{padding:0 16px 16px;font-size:14px}
  .cta-panel{padding-bottom:56px}
  .cta-inner h2{font-size:22px}
  .cta-inner .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
  .to-top{right:16px;bottom:16px;width:44px;height:44px}
  .sub-form{flex-wrap:wrap}
  .sub-form input{flex:1 1 100%}
  .sub-form .btn{width:100%}
  .search-field{flex-wrap:wrap}
  .search-field input{flex:1 1 100%}
  .search-field .btn{width:100%}
}
@media (max-width:519.98px){
  .page-head h1{font-size:26px}
  .figure-box{aspect-ratio:4/3}
  .steps-inline li{padding-left:46px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}