/* roulang page: index */
:root{
  --bg-0:#070B12;
  --bg-1:#0C1320;
  --bg-2:#101A2B;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.085);
  --stroke:rgba(255,255,255,.10);
  --stroke-hot:rgba(233,168,59,.42);
  --brand:#E9A83B;
  --brand-2:#3FBFA0;
  --text:#E9EFF8;
  --text-2:#A6B4C8;
  --text-3:#6F7F96;
  --danger-soft:#FF8A65;
  --r-card:18px;
  --r-sm:12px;
  --shadow-card:0 1px 0 rgba(255,255,255,.06) inset, 0 18px 40px -24px rgba(0,0,0,.85);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg-0);
  color:var(--text);
  font-size:15.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:rgba(233,168,59,.3);color:#fff}
.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--brand-2);outline-offset:3px;border-radius:8px;
}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--bg-1);
  border-bottom:1px solid rgba(255,255,255,.06);
  font-size:12.5px;
  color:var(--text-3);
}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:38px;flex-wrap:wrap;
}
.topbar-left{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.topbar-domain{
  color:var(--text-2);font-weight:600;letter-spacing:.03em;
  padding:1px 8px;border:1px solid var(--stroke);border-radius:999px;
}
.topbar-sep{color:var(--text-3);opacity:.6}
.topbar-right{display:flex;align-items:center;gap:14px}
.topbar-link{color:var(--text-2);transition:color .18s}
.topbar-link:hover{color:var(--brand)}
.btn-mini{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  border:1px solid var(--stroke);background:rgba(255,255,255,.03);
  color:var(--text-2);font-size:12px;font-weight:600;
  transition:all .18s ease;
}
.btn-mini:hover{border-color:var(--stroke-hot);color:var(--brand);background:rgba(233,168,59,.08)}

/* ---------- 主导航 ---------- */
.mainnav{
  position:sticky;top:0;z-index:1030;
  background:rgba(10,16,26,.72);
  border-bottom:1px solid rgba(255,255,255,.07);
  backdrop-filter:blur(10px) saturate(120%);
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.mainnav.is-scrolled{
  background:rgba(8,13,21,.94);
  border-bottom-color:rgba(255,255,255,.12);
  box-shadow:0 18px 40px -30px rgba(0,0,0,.95);
  backdrop-filter:blur(18px) saturate(130%);
}
.nav-inner{display:flex;align-items:center;gap:22px;min-height:72px}
.brand{display:flex;flex-direction:column;line-height:1.15;padding:6px 0;flex:0 0 auto}
.brand-main{
  font-size:19px;font-weight:800;letter-spacing:-.01em;
  color:var(--text);
}
.brand-main em{font-style:normal;color:var(--brand)}
.brand-sub{
  font-size:11px;letter-spacing:.16em;color:var(--text-3);font-weight:600;margin-top:4px;
}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap}
.menu-link{
  position:relative;display:inline-flex;align-items:center;
  height:40px;padding:0 12px;border-radius:10px;
  font-size:14px;font-weight:600;color:var(--text-2);
  transition:color .18s ease,background .18s ease;white-space:nowrap;
}
.menu-link::after{
  content:"";position:absolute;left:50%;bottom:4px;transform:translateX(-50%) scaleX(0);
  width:60%;height:2px;border-radius:2px;background:var(--brand);
  transition:transform .22s ease;transform-origin:center;
}
.menu-link:hover{color:var(--brand)}
.menu-link:hover::after{transform:translateX(-50%) scaleX(1)}
.menu-link.active{color:var(--text)}
.menu-link.active::after{transform:translateX(-50%) scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--stroke);background:rgba(255,255,255,.04);
  color:var(--text);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 26px;border-radius:999px;
  font-size:14.5px;font-weight:700;border:none;cursor:pointer;
  transition:transform .16s ease,box-shadow .22s ease,filter .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-glow{
  background:linear-gradient(180deg,#F3B75B,#E09A28);
  color:#1A1205;
  box-shadow:0 0 0 1px rgba(233,168,59,.55),0 10px 30px -10px rgba(233,168,59,.65);
}
.btn-glow:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(233,168,59,.7),0 16px 38px -10px rgba(233,168,59,.8);color:#1A1205}
.btn-glow:active{transform:translateY(1px)}
.btn-ghost{
  background:rgba(255,255,255,.035);
  border:1px solid var(--stroke);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:rgba(233,168,59,.07)}
.btn-ghost:active{transform:translateY(1px)}
.btn-block{width:100%}
.link-teal{
  color:var(--brand-2);font-weight:600;font-size:14px;
  display:inline-flex;align-items:center;gap:6px;
  text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(63,191,160,.35);
  transition:color .18s,text-underline-offset .18s;
}
.link-teal:hover{color:#63d8bb;text-underline-offset:6px}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:25px;padding:0 11px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--stroke);
  font-size:12px;font-weight:600;color:var(--text-2);white-space:nowrap;
}
.tag-brand{color:var(--brand);border-color:rgba(233,168,59,.38);background:rgba(233,168,59,.08)}
.tag-teal{color:var(--brand-2);border-color:rgba(63,191,160,.35);background:rgba(63,191,160,.07)}
.tag-muted{color:var(--text-3)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;position:relative}
.section--alt{background:var(--bg-1);border-top:1px solid rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.05)}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;font-weight:600;letter-spacing:.14em;color:var(--brand);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);opacity:.75}
.sec-title{
  font-size:clamp(24px,2.6vw,34px);font-weight:800;line-height:1.25;
  letter-spacing:-.015em;margin:14px 0 12px;
}
.sec-desc{color:var(--text-2);font-size:15px;max-width:660px}
.mt-28{margin-top:28px}
.mt-40{margin-top:40px}

/* ---------- 卡片 ---------- */
.card-glass{
  background:var(--glass);
  border:1px solid var(--stroke);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.card-glass:hover{
  transform:translateY(-2px);
  border-color:var(--stroke-hot);
  box-shadow:0 1px 0 rgba(255,255,255,.08) inset,0 26px 50px -26px rgba(0,0,0,.9);
}
.card-pad{padding:24px}
.card-title{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:8px}
.card-text{font-size:14px;color:var(--text-2);line-height:1.8}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:96px 0 84px;background:var(--bg-0)}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/f8c40919b0511f80.webp');
  background-size:cover;background-position:center;
  opacity:.26;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);
  background-size:48px 48px;
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(760px 440px at 84% 6%,rgba(233,168,59,.17),transparent 68%),
    radial-gradient(620px 400px at 4% 92%,rgba(63,191,160,.10),transparent 72%),
    linear-gradient(180deg,rgba(7,11,18,.72) 0%,rgba(7,11,18,.9) 62%,var(--bg-0) 100%);
}
.hero-inner{position:relative;z-index:2;max-width:840px}
.hero h1{
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.15;font-weight:800;letter-spacing:-.02em;
  margin:18px 0 22px;
}
.hero h1 .hl{color:var(--brand)}
.hero-lead{
  font-size:16px;line-height:1.9;color:var(--text-2);max-width:720px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-points .tag{height:28px;font-size:12.5px}

/* 速览条 */
.glance{margin-top:-44px;position:relative;z-index:5}
.glance-card{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  padding:6px;
}
.glance-item{
  padding:18px 20px;border-right:1px solid rgba(255,255,255,.07);
}
.glance-item:last-child{border-right:none}
.glance-label{font-size:11.5px;letter-spacing:.14em;color:var(--text-3);font-weight:600}
.glance-val{margin-top:8px;font-size:15px;font-weight:700;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.glance-note{font-size:12px;color:var(--text-3);margin-top:4px}

/* ---------- 问题陈述 ---------- */
.pain-card{padding:22px;height:100%}
.pain-ico{
  width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--stroke-hot);background:rgba(233,168,59,.09);color:var(--brand);
  margin-bottom:14px;font-weight:800;font-size:14px;letter-spacing:.02em;
}

/* ---------- 步骤条 ---------- */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.steps::before{
  content:"";position:absolute;left:6%;right:6%;top:26px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(233,168,59,.45),rgba(63,191,160,.35),transparent);
}
.step{position:relative;padding-top:0}
.step-num{
  width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--stroke-hot);background:rgba(12,19,32,.94);
  color:var(--brand);font-weight:800;font-size:15px;letter-spacing:.04em;
  margin-bottom:18px;position:relative;z-index:2;
  box-shadow:0 0 0 6px rgba(7,11,18,.9);
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--text-2);line-height:1.8}

/* ---------- 数据条 ---------- */
.stats{background:var(--bg-1);border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06);padding:52px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.stat-num{
  font-size:clamp(28px,3.4vw,40px);font-weight:800;color:var(--brand);
  font-variant-numeric:tabular-nums;line-height:1.1;letter-spacing:-.02em;
}
.stat-num span{font-size:.5em;margin-left:4px;color:var(--text-2);font-weight:700}
.stat-label{font-size:13.5px;font-weight:600;margin-top:8px}
.stat-note{font-size:12px;color:var(--text-3);margin-top:2px}

/* ---------- 专题：大图 + 纵列 ---------- */
.topic-cover{
  position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--stroke);
  background:var(--bg-2);aspect-ratio:3/2;
}
.topic-cover img{width:100%;height:100%;object-fit:cover;opacity:.86}
.topic-cover .cover-body{
  position:absolute;inset:auto 0 0 0;padding:26px;
  background:linear-gradient(180deg,transparent,rgba(7,11,18,.92));
}
.topic-cover h3{font-size:20px;font-weight:800;margin-bottom:8px}
.topic-cover p{font-size:13.5px;color:var(--text-2);line-height:1.75}
.mini-item{
  display:flex;gap:14px;padding:18px;border-radius:14px;
  background:var(--glass);border:1px solid var(--stroke);
  transition:border-color .2s,background .2s,transform .2s;
}
.mini-item:hover{border-color:var(--stroke-hot);background:var(--glass-strong);transform:translateY(-2px)}
.mini-item + .mini-item{margin-top:14px}
.mini-time{
  flex:0 0 58px;font-size:12.5px;font-weight:700;color:var(--brand-2);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;padding-top:2px;
}
.mini-item h4{font-size:14.5px;font-weight:700;margin-bottom:5px}
.mini-item p{font-size:13px;color:var(--text-2);line-height:1.7}

/* ---------- 卡住点 ---------- */
.stuck-item{
  display:flex;gap:18px;padding:20px 22px;border-radius:14px;
  border:1px solid var(--stroke);background:rgba(255,255,255,.03);
  transition:background .2s,border-color .2s;
}
.stuck-item:hover{background:var(--glass-strong);border-color:rgba(233,168,59,.3)}
.stuck-item + .stuck-item{margin-top:12px}
.stuck-idx{
  flex:0 0 34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;color:var(--text-3);border:1px solid var(--stroke);
  font-variant-numeric:tabular-nums;
}
.stuck-item h4{font-size:15px;font-weight:700;margin-bottom:4px}
.stuck-item p{font-size:13.5px;color:var(--text-2);line-height:1.75}
.stuck-item p b{color:var(--brand-2);font-weight:600}

/* ---------- Zigzag ---------- */
.zig-img{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--stroke);
  aspect-ratio:4/3;background:var(--bg-2);
}
.zig-img img{width:100%;height:100%;object-fit:cover;opacity:.9}
.zig-list{margin-top:18px}
.zig-list li{
  display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.8;
  padding:7px 0;border-bottom:1px dashed rgba(255,255,255,.07);
}
.zig-list li:last-child{border-bottom:none}
.zig-list li::before{content:"";flex:0 0 6px;height:6px;border-radius:50%;background:var(--brand-2);margin-top:11px}

/* ---------- 城市云 ---------- */
.city-cloud{display:flex;flex-wrap:wrap;gap:10px}
.city-pill{
  display:inline-flex;align-items:center;gap:8px;
  height:36px;padding:0 16px;border-radius:999px;
  background:rgba(255,255,255,.045);border:1px solid var(--stroke);
  font-size:13.5px;font-weight:600;color:var(--text-2);
  transition:all .2s ease;
}
.city-pill em{font-style:normal;font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums}
.city-pill:hover{border-color:var(--brand);color:var(--brand);background:rgba(233,168,59,.09);transform:translateY(-2px)}
.city-pill:hover em{color:var(--brand)}
.city-pill.is-hot{border-color:rgba(63,191,160,.4);color:var(--brand-2)}
.city-pill.is-hot em{color:var(--brand-2)}

.feed-row{
  display:flex;align-items:center;gap:14px;padding:14px 18px;border-radius:12px;
  border:1px solid transparent;transition:background .18s,border-color .18s;
}
.feed-row:hover{background:var(--glass-strong);border-color:var(--stroke)}
.feed-row + .feed-row{border-top:1px solid rgba(255,255,255,.055)}
.feed-dot{width:7px;height:7px;border-radius:50%;background:var(--brand-2);flex:0 0 auto}
.feed-row .fr-city{font-size:13.5px;font-weight:700;flex:0 0 68px}
.feed-row .fr-text{font-size:13px;color:var(--text-2);flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.feed-row .fr-time{font-size:12px;color:var(--text-3);flex:0 0 auto;font-variant-numeric:tabular-nums}

/* ---------- 论坛热帖 ---------- */
.post-row{
  display:flex;gap:18px;align-items:center;
  padding:16px 18px;border-radius:14px;
  border:1px solid transparent;transition:background .18s,border-color .18s,transform .18s;
}
.post-row:hover{background:var(--glass-strong);border-color:var(--stroke);transform:translateX(2px)}
.post-row + .post-row{margin-top:6px}
.post-thumb{
  flex:0 0 96px;height:72px;border-radius:12px;overflow:hidden;
  border:1px solid var(--stroke);background:var(--bg-2);
}
.post-thumb img{width:100%;height:100%;object-fit:cover;opacity:.85}
.post-body{flex:1 1 auto;min-width:0}
.post-body h4{font-size:15.5px;font-weight:700;margin-bottom:4px;transition:color .18s}
.post-row:hover .post-body h4{color:var(--brand)}
.post-body p{font-size:13px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{flex:0 0 auto;text-align:right;font-size:12px;color:var(--text-3);line-height:1.9;font-variant-numeric:tabular-nums}
.post-meta .pm-city{color:var(--brand-2);font-weight:600}

/* ---------- 横向笔记 ---------- */
.note-track{
  display:flex;gap:16px;overflow-x:auto;padding-bottom:8px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.note-track::-webkit-scrollbar{display:none}
.note-card{
  flex:0 0 268px;padding:20px 20px 20px 24px;border-radius:14px;
  background:var(--glass);border:1px solid var(--stroke);
  border-left:3px solid rgba(233,168,59,.5);
  transition:border-color .2s,background .2s,transform .2s;
}
.note-card:nth-child(even){border-left-color:rgba(63,191,160,.5)}
.note-card:hover{background:var(--glass-strong);border-color:var(--stroke-hot);transform:translateY(-2px)}
.note-card h4{font-size:14.5px;font-weight:700;line-height:1.55;margin:10px 0 12px}
.note-date{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums}

/* ---------- 知识卡 ---------- */
.know-big{padding:0;overflow:hidden}
.know-big .kb-img{
  aspect-ratio:1/1;background:var(--bg-2);border-bottom:1px solid var(--stroke);
}
.know-big .kb-img img{width:100%;height:100%;object-fit:cover;opacity:.86}
.know-big .kb-body{padding:26px}
.know-big h3{font-size:19px;font-weight:800;margin-bottom:10px}
.know-big p{font-size:14px;color:var(--text-2);line-height:1.85}
.know-item{
  display:flex;gap:14px;padding:18px 20px;border-radius:14px;
  background:rgba(255,255,255,.035);border:1px solid var(--stroke);
  transition:border-color .2s,background .2s;
}
.know-item:hover{border-color:var(--stroke-hot);background:var(--glass-strong)}
.know-item + .know-item{margin-top:12px}
.know-item .ki-idx{flex:0 0 26px;font-size:12.5px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;padding-top:2px}
.know-item h4{font-size:14.5px;font-weight:700;margin-bottom:4px}
.know-item p{font-size:13px;color:var(--text-2);line-height:1.75}

/* ---------- 证言 ---------- */
.quote-card{
  padding:26px 26px 24px 28px;border-radius:var(--r-card);
  background:var(--glass-strong);border:1px solid var(--stroke);
  border-left:2px solid var(--brand-2);
  height:100%;
}
.quote-mark{font-size:30px;line-height:1;color:var(--brand);opacity:.75;margin-bottom:10px;font-weight:800}
.quote-card p{font-size:14.5px;color:var(--text-2);line-height:1.9;min-height:82px}
.quote-foot{display:flex;align-items:center;gap:12px;margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,.07)}
.avatar{
  width:38px;height:38px;border-radius:50%;flex:0 0 38px;
  background:linear-gradient(150deg,rgba(233,168,59,.6),rgba(63,191,160,.45));
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;color:#0A1018;
}
.quote-foot .qf-name{font-size:13.5px;font-weight:700}
.quote-foot .qf-role{font-size:12px;color:var(--text-3)}
.carousel-ctrl{display:flex;gap:10px;justify-content:flex-end;margin-top:22px}
.cbtn{
  width:44px;height:44px;border-radius:50%;
  border:1px solid var(--stroke);background:rgba(255,255,255,.04);
  color:var(--text-2);display:flex;align-items:center;justify-content:center;
  transition:all .2s;cursor:pointer;
}
.cbtn:hover{border-color:var(--brand);color:var(--brand);background:rgba(233,168,59,.1)}
.cbtn svg{width:16px;height:16px}
.carousel-indicators{position:static;margin:18px 0 0;justify-content:flex-start}
.carousel-indicators [data-bs-target]{
  width:22px;height:3px;border-radius:2px;background:rgba(255,255,255,.18);
  border:none;opacity:1;margin-right:6px;
}
.carousel-indicators .active{background:var(--brand)}

/* ---------- 人群 ---------- */
.crowd-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.crowd-tab{
  height:34px;padding:0 18px;border-radius:999px;display:inline-flex;align-items:center;
  font-size:13.5px;font-weight:600;color:var(--text-2);
  border:1px solid var(--stroke);background:rgba(255,255,255,.04);
}
.crowd-tab.on{border-color:var(--stroke-hot);color:var(--brand);background:rgba(233,168,59,.1)}
.crowd-card{padding:22px;height:100%}
.crowd-card h4{font-size:15.5px;font-weight:700;margin-bottom:8px}
.crowd-card p{font-size:13.5px;color:var(--text-2);line-height:1.8}
.crowd-card .tag{margin-bottom:14px}

/* ---------- FAQ ---------- */
.accordion-item{
  background:var(--glass);border:1px solid var(--stroke);border-radius:14px !important;
  margin-bottom:12px;overflow:hidden;
}
.accordion-item:last-child{margin-bottom:0}
.accordion-button{
  background:transparent;color:var(--text);font-weight:700;font-size:15px;
  padding:18px 22px;box-shadow:none !important;border-radius:14px !important;
  display:flex;align-items:center;gap:14px;
}
.accordion-button:not(.collapsed){
  color:var(--brand);background:rgba(233,168,59,.06);
  border-left:3px solid var(--brand);
  padding-left:19px;
}
.accordion-button::after{display:none}
.accordion-button::before{
  content:"+";order:2;margin-left:auto;flex:0 0 auto;
  width:22px;height:22px;border-radius:50%;
  border:1px solid var(--stroke);display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:600;color:var(--text-2);line-height:1;
}
.accordion-button:not(.collapsed)::before{content:"−";color:var(--brand);border-color:rgba(233,168,59,.5)}
.accordion-body{
  padding:4px 22px 22px;font-size:14.5px;line-height:1.9;color:var(--text-2);
}

/* ---------- 表单 ---------- */
.cta-panel{
  padding:40px;border-radius:24px;position:relative;overflow:hidden;
  background:linear-gradient(140deg,rgba(233,168,59,.10),rgba(63,191,160,.07) 52%,rgba(255,255,255,.03));
  border:1px solid var(--stroke);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);
}
.cta-panel::after{
  content:"";position:absolute;width:420px;height:420px;right:-140px;top:-180px;border-radius:50%;
  background:radial-gradient(circle,rgba(233,168,59,.22),transparent 68%);
  pointer-events:none;
}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;color:var(--text-2);font-weight:600;margin-bottom:7px}
.field .form-control,.field .form-select{
  height:46px;padding:0 15px;border-radius:12px;
  background:rgba(8,13,21,.72);border:1px solid var(--stroke);
  color:var(--text);font-size:14px;
  transition:border-color .2s,box-shadow .2s;
}
.field .form-control::placeholder{color:var(--text-3)}
.field .form-control:focus,.field .form-select:focus{
  background:rgba(8,13,21,.9);border-color:var(--brand);color:var(--text);
  box-shadow:0 0 0 3px rgba(233,168,59,.16);outline:none;
}
.field .form-select option{background:#0C1320;color:var(--text)}
.form-tip{font-size:12px;color:var(--text-3);margin-top:10px;line-height:1.7}
.form-msg{font-size:13px;color:var(--brand-2);margin-top:10px;min-height:20px}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-1);border-top:1px solid rgba(255,255,255,.08);
  padding:64px 0 0;margin-top:0;
}
.f-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.f-brand-main{font-size:18px;font-weight:800}
.f-brand-sub{font-size:11px;letter-spacing:.16em;color:var(--text-3);font-weight:600;margin-top:5px}
.f-desc{font-size:13.5px;color:var(--text-2);line-height:1.85;margin-top:16px;max-width:280px}
.f-title{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--text);margin-bottom:16px}
.f-links li{margin-bottom:10px}
.f-links a{font-size:13.5px;color:var(--text-2);transition:color .18s}
.f-links a:hover{color:var(--brand)}
.f-cities{display:flex;flex-wrap:wrap;gap:8px}
.f-cities span{
  font-size:12.5px;color:var(--text-2);padding:3px 10px;border-radius:999px;
  border:1px solid var(--stroke);background:rgba(255,255,255,.03);
}
.f-contact li{font-size:13.5px;color:var(--text-2);margin-bottom:10px;line-height:1.7}
.f-contact li b{color:var(--text);font-weight:600}
.f-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0 26px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}
.f-bottom .f-domain{color:var(--text-3);letter-spacing:.03em}

/* ---------- 移动抽屉 ---------- */
.offcanvas.oc-dark{
  background:var(--bg-1);color:var(--text);width:min(88vw,340px);
  border-left:1px solid var(--stroke);
}
.oc-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid rgba(255,255,255,.08)}
.oc-body{padding:14px 12px 24px;display:flex;flex-direction:column;height:calc(100% - 74px)}
.oc-link{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:12px;
  font-size:15px;font-weight:600;color:var(--text-2);transition:all .18s;
}
.oc-link:hover,.oc-link.active{background:rgba(233,168,59,.1);color:var(--brand)}
.oc-foot{margin-top:auto;padding:16px 8px 0;border-top:1px solid rgba(255,255,255,.08)}
.btn-close-c{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--stroke);
  background:rgba(255,255,255,.04);color:var(--text-2);
  display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;
}
.btn-close-c:hover{color:var(--brand);border-color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .nav-menu{gap:0}
  .menu-link{padding:0 9px;font-size:13.5px}
  .nav-inner{gap:14px}
}
@media (max-width:991.98px){
  .nav-menu{display:none}
  .nav-toggle{display:flex}
  .nav-actions .btn-glow{display:none}
  .hero{padding:72px 0 72px}
  .glance{margin-top:-32px}
  .glance-card{grid-template-columns:repeat(2,1fr)}
  .glance-item:nth-child(2){border-right:none}
  .glance-item:nth-child(1),.glance-item:nth-child(2){border-bottom:1px solid rgba(255,255,255,.07)}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:26px}
  .f-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
}
@media (max-width:767.98px){
  body{font-size:15px}
  .section{padding:56px 0}
  .stats{padding:44px 0}
  .hero{padding:56px 0 64px}
  .hero h1{margin:14px 0 18px}
  .hero-actions .btn{width:100%}
  .steps{grid-template-columns:1fr;gap:0}
  .steps::before{display:none}
  .step{display:flex;gap:16px;padding-bottom:24px;position:relative}
  .step:not(:last-child)::before{
    content:"";position:absolute;left:25px;top:52px;bottom:0;width:1px;
    background:linear-gradient(180deg,rgba(233,168,59,.45),transparent);
  }
  .step-num{margin-bottom:0;flex:0 0 52px}
  .step-body{padding-top:4px}
  .post-row{flex-wrap:wrap;gap:12px}
  .post-thumb{flex:0 0 84px;height:64px}
  .post-meta{flex:1 1 100%;text-align:left;display:flex;gap:12px;font-size:11.5px}
  .post-body{flex:1 1 calc(100% - 100px)}
  .cta-panel{padding:26px 20px}
  .quote-card p{min-height:0}
  .accordion-button{font-size:14.5px;padding:16px 18px}
  .accordion-body{padding:2px 18px 18px;font-size:14px}
  .quote-card{padding:22px}
  .card-pad{padding:20px}
}
@media (max-width:575.98px){
  .topbar-right{width:100%;justify-content:flex-start;padding-bottom:8px}
  .topbar-inner{padding-top:8px}
  .topbar-left{font-size:12px}
  .glance-card{grid-template-columns:1fr}
  .glance-item{border-right:none !important;border-bottom:1px solid rgba(255,255,255,.07)}
  .glance-item:last-child{border-bottom:none}
  .stats-grid{grid-template-columns:1fr;gap:22px}
  .f-grid{grid-template-columns:1fr;gap:30px}
  .note-card{flex:0 0 232px}
  .brand-main{font-size:17px}
  .brand-sub{font-size:10px;letter-spacing:.12em}
  .feed-row .fr-text{display:none}
  .hero-points .tag{font-size:11.5px;height:26px}
}

/* roulang page: category1 */
:root{
  --bg-0:#070B12;
  --bg-1:#0C1320;
  --bg-2:#101A2B;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.085);
  --stroke:rgba(255,255,255,.10);
  --stroke-hot:rgba(233,168,59,.42);
  --brand:#E9A83B;
  --brand-2:#3FBFA0;
  --text:#E9EFF8;
  --text-2:#A6B4C8;
  --text-3:#6F7F96;
  --danger-soft:#FF8A65;
  --r-card:18px;
  --r-sm:12px;
  --shadow-card:0 1px 0 rgba(255,255,255,.06) inset, 0 18px 40px -24px rgba(0,0,0,.85);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg-0);
  color:var(--text);
  font-size:15.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5{margin:0;font-weight:800;letter-spacing:-.015em;line-height:1.28}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .18s ease}
button{font-family:inherit}
input,select,textarea{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--brand-2);outline-offset:3px;border-radius:8px;
}
.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
::selection{background:rgba(233,168,59,.28);color:#fff}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--bg-1);
  border-bottom:1px solid rgba(255,255,255,.06);
  font-size:12.5px;
  color:var(--text-3);
}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:38px;flex-wrap:wrap;
}
.topbar-left{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.topbar-domain{
  color:var(--text-2);font-weight:600;letter-spacing:.03em;
  padding:1px 8px;border:1px solid var(--stroke);border-radius:999px;
}
.topbar-sep{color:var(--text-3);opacity:.6}
.topbar-right{display:flex;align-items:center;gap:14px}
.topbar-link{color:var(--text-2);transition:color .18s}
.topbar-link:hover{color:var(--brand)}
.btn-mini{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  border:1px solid var(--stroke);background:rgba(255,255,255,.03);
  color:var(--text-2);font-size:12px;font-weight:600;
  transition:all .18s ease;
}
.btn-mini:hover{border-color:var(--stroke-hot);color:var(--brand);background:rgba(233,168,59,.08)}

/* ---------- 主导航 ---------- */
.mainnav{
  position:sticky;top:0;z-index:1030;
  background:rgba(10,16,26,.72);
  border-bottom:1px solid rgba(255,255,255,.07);
  backdrop-filter:blur(10px) saturate(120%);
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.mainnav.is-scrolled{
  background:rgba(8,13,21,.94);
  border-bottom-color:rgba(255,255,255,.12);
  box-shadow:0 18px 40px -30px rgba(0,0,0,.95);
  backdrop-filter:blur(18px) saturate(130%);
}
.nav-inner{display:flex;align-items:center;gap:22px;min-height:72px}
.brand{display:flex;flex-direction:column;line-height:1.15;padding:6px 0;flex:0 0 auto}
.brand-main{font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--text)}
.brand-main em{font-style:normal;color:var(--brand)}
.brand-sub{font-size:11px;letter-spacing:.16em;color:var(--text-3);font-weight:600;margin-top:4px}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap}
.menu-link{
  position:relative;display:inline-flex;align-items:center;
  height:40px;padding:0 12px;border-radius:10px;
  font-size:14px;font-weight:600;color:var(--text-2);
  transition:color .18s ease,background .18s ease;white-space:nowrap;
}
.menu-link::after{
  content:"";position:absolute;left:50%;bottom:4px;transform:translateX(-50%) scaleX(0);
  width:60%;height:2px;border-radius:2px;background:var(--brand);
  transition:transform .22s ease;transform-origin:center;
}
.menu-link:hover{color:var(--brand)}
.menu-link:hover::after{transform:translateX(-50%) scaleX(1)}
.menu-link.active{color:var(--text)}
.menu-link.active::after{transform:translateX(-50%) scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--stroke);background:rgba(255,255,255,.04);
  color:var(--text);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 26px;border-radius:999px;
  font-size:14.5px;font-weight:700;border:none;cursor:pointer;
  transition:transform .16s ease,box-shadow .22s ease,filter .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-glow{
  background:linear-gradient(180deg,#F3B75B,#E09A28);
  color:#1A1205;
  box-shadow:0 0 0 1px rgba(233,168,59,.55),0 10px 30px -10px rgba(233,168,59,.65);
}
.btn-glow:hover{filter:brightness(1.06);box-shadow:0 0 0 1px rgba(233,168,59,.7),0 16px 38px -10px rgba(233,168,59,.8);color:#1A1205}
.btn-glow:active{transform:translateY(1px)}
.btn-ghost{
  background:rgba(255,255,255,.035);
  border:1px solid var(--stroke);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:rgba(233,168,59,.07)}
.btn-ghost:active{transform:translateY(1px)}
.btn-block{width:100%}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:25px;padding:0 11px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--stroke);
  font-size:12px;font-weight:600;color:var(--text-2);white-space:nowrap;
}
.tag-brand{color:var(--brand);border-color:rgba(233,168,59,.38);background:rgba(233,168,59,.08)}
.tag-teal{color:var(--brand-2);border-color:rgba(63,191,160,.35);background:rgba(63,191,160,.07)}
.tag-muted{color:var(--text-3)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;position:relative}
.section--alt{background:var(--bg-1);border-top:1px solid rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.05)}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;font-weight:600;letter-spacing:.14em;color:var(--brand);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);opacity:.75}
.sec-title{
  font-size:clamp(24px,2.6vw,34px);font-weight:800;line-height:1.25;
  letter-spacing:-.015em;margin:14px 0 12px;
}
.sec-desc{font-size:15px;color:var(--text-2);max-width:680px}
.glass-card{
  background:var(--glass);
  border:1px solid var(--stroke);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);
  padding:24px;
}

/* ---------- 分类头部 ---------- */
.cat-head{
  position:relative;
  background:var(--bg-1);
  border-bottom:1px solid rgba(255,255,255,.06);
  padding:52px 0 56px;
  overflow:hidden;
}
.cat-head::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(620px 320px at 88% 0%, rgba(233,168,59,.10), transparent 70%),
    linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
  background-size:auto, 48px 48px, 48px 48px;
  pointer-events:none;
}
.cat-head .shell{position:relative;z-index:1}
.crumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--text-3);margin-bottom:16px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand)}
.crumb .current{color:var(--brand)}
.cat-h1{
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.2;
  letter-spacing:-.02em;
  margin-bottom:16px;
}
.cat-h1 em{font-style:normal;color:var(--brand)}
.cat-lead{font-size:15.5px;color:var(--text-2);max-width:620px;margin-bottom:6px}
.cat-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.cat-badges .tag{height:28px;padding:0 14px;font-size:12.5px}
.guide-card{height:100%;display:flex;flex-direction:column}
.guide-title{
  font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--brand);
  padding-bottom:14px;border-bottom:1px solid var(--stroke);margin-bottom:6px;
}
.guide-list li{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.07);
  font-size:13.5px;color:var(--text-2);
}
.guide-list li:last-child{border-bottom:none}
.guide-list b{color:var(--text);font-weight:700;font-variant-numeric:tabular-nums}
.guide-note{font-size:12.5px;color:var(--text-3);margin-top:auto;padding-top:14px}

/* ---------- 筛选条 ---------- */
.filterbar{
  position:sticky;top:72px;z-index:1020;
  background:rgba(10,16,26,.92);
  border-bottom:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(14px) saturate(120%);
}
.filter-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding-top:14px;padding-bottom:14px;flex-wrap:wrap;
}
.filter-tags{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.chip{
  height:32px;padding:0 15px;border-radius:999px;
  background:rgba(255,255,255,.04);border:1px solid var(--stroke);
  color:var(--text-2);font-size:13px;font-weight:600;cursor:pointer;
  transition:all .18s ease;display:inline-flex;align-items:center;
}
.chip:hover{border-color:var(--stroke-hot);color:var(--brand)}
.chip.is-on{
  background:rgba(233,168,59,.12);
  border-color:rgba(233,168,59,.55);
  color:var(--brand);
}
.filter-sort{display:flex;align-items:center;gap:10px}
.filter-sort label{font-size:12.5px;color:var(--text-3);white-space:nowrap}
.sort-select{
  width:170px;height:36px;
  background-color:rgba(255,255,255,.045);
  border:1px solid var(--stroke);
  border-radius:999px;
  color:var(--text);
  font-size:13px;
  padding:0 34px 0 14px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23A6B4C8' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 14px center;
  appearance:none;
}
.sort-select:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(233,168,59,.18);
  background-color:rgba(255,255,255,.06);
  color:var(--text);
}
.sort-select option{background:#0C1320;color:var(--text)}

/* ---------- 列表主体 ---------- */
.list-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:16px;flex-wrap:wrap;margin-bottom:22px;
}
.list-head h2{font-size:clamp(20px,2.2vw,26px)}
.list-count{font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums}
.course-list{display:flex;flex-direction:column;gap:14px}
.course-row{
  display:flex;gap:20px;align-items:stretch;
  background:var(--glass);
  border:1px solid var(--stroke);
  border-radius:var(--r-card);
  padding:16px;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.course-row:hover{
  transform:translateY(-2px);
  border-color:var(--stroke-hot);
  background:var(--glass-strong);
  box-shadow:0 1px 0 rgba(255,255,255,.08) inset,0 24px 48px -26px rgba(0,0,0,.92);
}
.course-thumb{
  flex:0 0 200px;width:200px;aspect-ratio:200/130;
  border-radius:var(--r-sm);overflow:hidden;
  background:var(--bg-2);border:1px solid var(--stroke);
}
.course-thumb img{width:100%;height:100%;object-fit:cover}
.course-body{display:flex;flex-direction:column;gap:8px;min-width:0;flex:1}
.course-tags{display:flex;flex-wrap:wrap;gap:6px}
.course-title{font-size:17px;font-weight:800;line-height:1.45;letter-spacing:-.01em}
.course-sum{font-size:13.8px;color:var(--text-2);line-height:1.7}
.course-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  font-size:12.5px;color:var(--text-3);margin-top:auto;font-variant-numeric:tabular-nums;
}
.course-meta i{width:3px;height:3px;border-radius:50%;background:var(--text-3);opacity:.6}
.list-more{display:flex;justify-content:center;margin-top:26px}

/* ---------- 侧栏 ---------- */
.side-col{display:flex;flex-direction:column;gap:16px}
@media (min-width:992px){.side-col{position:sticky;top:150px}}
.side-card{padding:20px}
.side-title{
  font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--brand);
  padding-bottom:12px;border-bottom:1px solid var(--stroke);margin-bottom:14px;
}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;border:1px solid var(--stroke);
  background:rgba(255,255,255,.04);font-size:12.5px;color:var(--text-2);
  transition:all .18s ease;
}
.tag-cloud a:hover{border-color:var(--brand);color:var(--brand);background:rgba(233,168,59,.08)}
.pick-list li{padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.07)}
.pick-list li:last-child{border-bottom:none;padding-bottom:0}
.pick-list li:first-child{padding-top:0}
.pick-title{font-size:14px;font-weight:700;line-height:1.55;color:var(--text)}
.pick-meta{font-size:12px;color:var(--text-3);margin-top:4px}
.side-cta{background:rgba(233,168,59,.06);border-color:rgba(233,168,59,.28)}
.side-cta p{font-size:13.5px;color:var(--text-2);margin-bottom:14px;line-height:1.7}

/* ---------- 专题分组 ---------- */
.topic-list{display:flex;flex-direction:column;gap:14px;margin-top:28px}
.topic-row{
  display:flex;align-items:center;gap:18px;
  background:var(--glass);
  border:1px solid var(--stroke);
  border-radius:var(--r-card);
  padding:18px 22px;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.topic-row:hover{transform:translateY(-2px);border-color:var(--stroke-hot);background:var(--glass-strong)}
.topic-icon{
  flex:0 0 56px;width:56px;height:56px;border-radius:var(--r-sm);
  overflow:hidden;border:1px solid var(--stroke);background:var(--bg-2);
}
.topic-icon img{width:100%;height:100%;object-fit:cover}
.topic-text{min-width:0;flex:1}
.topic-text h3{font-size:16.5px;margin-bottom:4px}
.topic-text p{font-size:13.5px;color:var(--text-2);line-height:1.65}
.topic-arrow{
  flex:0 0 auto;color:var(--brand);font-size:18px;font-weight:700;
  transition:transform .2s ease;
}
.topic-row:hover .topic-arrow{transform:translateX(4px)}

/* ---------- 精选笔记 ---------- */
.note-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:28px}
.note-card{
  background:var(--glass);border:1px solid var(--stroke);
  border-left:3px solid var(--brand-2);
  border-radius:var(--r-card);padding:20px 22px;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.note-card:hover{transform:translateY(-2px);background:var(--glass-strong);border-color:var(--stroke-hot);border-left-color:var(--brand)}
.note-card h3{font-size:16px;line-height:1.5;margin-bottom:8px}
.note-card p{font-size:13.5px;color:var(--text-2);line-height:1.7}
.note-meta{font-size:12px;color:var(--text-3);margin-top:12px;font-variant-numeric:tabular-nums}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:32px auto 0}
.accordion{
  --bs-accordion-bg:transparent;
  --bs-accordion-color:var(--text);
  --bs-accordion-border-color:transparent;
  --bs-accordion-btn-color:var(--text);
  --bs-accordion-btn-bg:transparent;
  --bs-accordion-active-color:var(--brand);
  --bs-accordion-active-bg:rgba(233,168,59,.07);
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-body-padding-x:22px;
  --bs-accordion-body-padding-y:0;
  --bs-accordion-inner-border-radius:var(--r-card);
}
.accordion-item{
  background:var(--glass);
  border:1px solid var(--stroke);
  border-left:3px solid transparent;
  border-radius:var(--r-card)!important;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.accordion-item:hover{background:var(--glass-strong);border-color:var(--stroke-hot)}
.accordion-item:has(.accordion-button:not(.collapsed)){border-left-color:var(--brand);background:var(--glass-strong)}
.accordion-button{
  font-size:15.5px;font-weight:700;color:var(--text);
  padding:18px 22px;
  background:transparent!important;
  box-shadow:none!important;
  display:flex;align-items:center;gap:14px;
  text-align:left;
}
.accordion-button:not(.collapsed){color:var(--brand)}
.accordion-button::after{
  content:"＋";
  display:flex;align-items:center;justify-content:center;
  width:26px;height:26px;flex:0 0 26px;margin-left:auto;
  border-radius:50%;border:1px solid var(--stroke);
  background-image:none!important;
  color:var(--brand);font-size:14px;font-weight:700;
  transform:none!important;
  transition:all .2s ease;
}
.accordion-button:not(.collapsed)::after{
  content:"－";
  background:rgba(233,168,59,.14);
  border-color:var(--stroke-hot);
}
.accordion-body{
  font-size:14.5px;color:var(--text-2);line-height:1.85;
  padding:0 22px 20px 22px;
}

/* ---------- 相关分类入口 ---------- */
.rel-cats{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.rel-chip{
  display:inline-flex;align-items:center;gap:8px;
  height:44px;padding:0 22px;border-radius:999px;
  border:1px solid var(--stroke);background:rgba(255,255,255,.04);
  font-size:14px;font-weight:600;color:var(--text-2);
  transition:all .2s ease;
}
.rel-chip span{color:var(--text-3);font-size:12px;font-variant-numeric:tabular-nums}
.rel-chip:hover{border-color:var(--brand);color:var(--brand);background:rgba(233,168,59,.09);transform:translateY(-2px)}
.rel-chip:hover span{color:var(--brand)}

/* ---------- 收尾 CTA ---------- */
.cta-band{
  background:var(--bg-1);
  border-top:1px solid rgba(255,255,255,.06);
  border-bottom:1px solid rgba(255,255,255,.06);
  padding:52px 0;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:26px;flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:8px}
.cta-inner p{font-size:14.5px;color:var(--text-2)}

/* ---------- 移动导航抽屉 ---------- */
.offcanvas{background:var(--bg-1);color:var(--text);border-left:1px solid var(--stroke)}
.offcanvas-header{border-bottom:1px solid var(--stroke);padding:20px 22px}
.m-brand-main{font-size:18px;font-weight:800}
.m-brand-main em{font-style:normal;color:var(--brand)}
.m-brand-sub{font-size:11px;letter-spacing:.16em;color:var(--text-3);font-weight:600;margin-top:4px}
.offcanvas-body{padding:18px 22px 26px;display:flex;flex-direction:column}
.m-menu{display:flex;flex-direction:column;margin-bottom:22px}
.m-menu a{
  display:flex;align-items:center;min-height:48px;
  font-size:15px;font-weight:600;color:var(--text-2);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:color .18s ease;
}
.m-menu a:hover,.m-menu a.is-active{color:var(--brand)}
.offcanvas-body .btn{margin-top:auto}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-0);
  border-top:1px solid rgba(255,255,255,.07);
  padding:64px 0 26px;
}
.f-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
}
.f-brand-main{font-size:18px;font-weight:800;color:var(--text)}
.f-brand-sub{font-size:11px;letter-spacing:.16em;color:var(--text-3);font-weight:600;margin-top:6px}
.f-desc{font-size:13.5px;color:var(--text-2);line-height:1.8;margin-top:14px;max-width:320px}
.f-title{
  font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--brand);
  margin-bottom:16px;
}
.f-links{display:flex;flex-direction:column;gap:10px}
.f-links a{font-size:13.5px;color:var(--text-2)}
.f-links a:hover{color:var(--brand)}
.f-cities{display:flex;flex-wrap:wrap;gap:8px}
.f-cities span{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;
  border-radius:999px;border:1px solid var(--stroke);
  background:rgba(255,255,255,.03);
  font-size:12.5px;color:var(--text-2);
}
.f-contact{display:flex;flex-direction:column;gap:10px}
.f-contact li{font-size:13px;color:var(--text-2);line-height:1.7}
.f-contact b{color:var(--text);font-weight:700;margin-right:6px}
.f-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.07);
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}
.f-domain{color:var(--text-3);letter-spacing:.04em}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .nav-inner{gap:14px}
  .menu-link{padding:0 9px;font-size:13.5px}
  .f-grid{grid-template-columns:1.5fr 1fr 1fr;gap:32px}
  .f-grid > div:last-child{grid-column:1 / -1}
}
@media (max-width:991.98px){
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn-glow{display:none}
  .section{padding:66px 0}
  .cat-head{padding:40px 0 44px}
  .filterbar{top:64px}
  .course-thumb{flex:0 0 160px;width:160px;aspect-ratio:160/110}
  .note-grid{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr 1fr;gap:30px}
  .f-grid > div:first-child{grid-column:1 / -1}
  .f-grid > div:last-child{grid-column:1 / -1}
}
@media (max-width:767.98px){
  .shell{padding:0 18px}
  .section{padding:56px 0}
  .topbar-inner{min-height:auto;padding:8px 0}
  .topbar-right{gap:10px}
  .nav-inner{min-height:64px}
  .brand-main{font-size:17px}
  .brand-sub{font-size:10px;letter-spacing:.12em}
  .cat-h1{font-size:clamp(24px,6vw,30px)}
  .filterbar{top:64px}
  .filter-inner{padding-top:12px;padding-bottom:12px;gap:10px}
  .filter-tags{gap:6px}
  .chip{height:30px;padding:0 12px;font-size:12.5px}
  .sort-select{width:150px;height:34px;font-size:12.5px}
  .course-row{flex-direction:column;gap:14px;padding:14px}
  .course-thumb{width:100%;flex:none;aspect-ratio:4/3}
  .course-title{font-size:16px}
  .topic-row{padding:16px;gap:14px}
  .topic-icon{flex:0 0 46px;width:46px;height:46px}
  .topic-text h3{font-size:15px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:18px}
  .cta-band{padding:44px 0}
  .rel-chip{height:40px;padding:0 16px;font-size:13px}
  .f-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:575.98px){
  .shell{padding:0 16px}
  .topbar-domain{font-size:11.5px}
  .topbar-left{gap:7px}
  .btn{height:42px;padding:0 20px;font-size:14px}
  .cat-badges .tag{height:26px;font-size:12px;padding:0 11px}
  .list-head{align-items:flex-start;flex-direction:column;gap:6px}
  .accordion-button{font-size:14.5px;padding:16px 18px}
  .accordion-body{padding:0 18px 18px 18px}
  .glass-card{padding:18px}
  .side-card{padding:18px}
}