/* roulang page: index */
:root{
  --ink:#0F3B38;
  --ink-deep:#0B2C2A;
  --ink-light:#14544F;
  --ink-lighter:#1E6E67;
  --celadon:#2FA79B;
  --celadon-hover:#248C82;
  --celadon-soft:#E4F2F0;
  --amber:#E08A3C;
  --amber-hover:#C9762C;
  --amber-soft:#FBEDE0;
  --bg:#F7F5F0;
  --card:#FFFFFF;
  --surface-2:#EFEBE3;
  --dark:#0E1514;
  --dark-2:#16201F;
  --text:#141A19;
  --text-2:#4C5755;
  --text-3:#7C8785;
  --text-inv:#F2F0EA;
  --border:#E2DDD4;
  --border-dark:#2A3735;
  --ok:#3E8E5A;
  --warn:#C98A1E;
  --err:#C0503F;
  --info:#2F7FA7;
  --r-sm:8px;
  --r-md:12px;
  --r-card:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,59,56,.05);
  --sh-2:0 6px 20px rgba(15,59,56,.08);
  --sh-3:0 18px 44px rgba(15,59,56,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
  --maxw:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none;padding:0}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em}
h1{font-size:40px;line-height:1.25}
h2{font-size:30px;line-height:1.32;margin-top:48px;margin-bottom:16px}
h3{font-size:22px;line-height:1.4;font-weight:600}
h4{font-size:17px;line-height:1.5;font-weight:600}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
time{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--celadon);outline-offset:2px;border-radius:4px}
::selection{background:var(--celadon-soft);color:var(--ink-deep)}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 16px}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-md);
  font-weight:600;font-size:15px;line-height:1;
  padding:0 22px;height:44px;
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
  white-space:nowrap;
}
.btn svg{flex:none}
.btn-primary{background:var(--amber);color:#fff;box-shadow:0 4px 14px rgba(224,138,60,.28)}
.btn-primary:hover{background:var(--amber-hover);transform:translateY(-1px);box-shadow:0 8px 22px rgba(224,138,60,.34)}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px rgba(224,138,60,.3)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--ink);}
.btn-ghost:hover{background:var(--celadon-soft);border-color:var(--celadon);color:var(--ink-light);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-plain{background:transparent;color:var(--celadon);padding:0;height:auto;font-weight:600}
.btn-plain .arrow{transition:transform var(--dur) var(--ease)}
.btn-plain:hover .arrow{transform:translateX(3px)}
.btn-sm{height:36px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-lg{height:52px;padding:0 30px;font-size:16px}
.btn[disabled]{opacity:.4;pointer-events:none}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:2px 10px;border-radius:var(--r-pill);
  font-size:12px;line-height:20px;font-weight:600;letter-spacing:.01em;
}
.badge-celadon{background:var(--celadon-soft);color:var(--ink-light)}
.badge-amber{background:var(--amber-soft);color:#8B4F17}
.badge-slate{background:#E7EDEC;color:#3C5653}
.badge-ochre{background:#F4E6DD;color:#8A4A28}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(247,245,240,.96);
  border-bottom:1px solid var(--border);
  transition:background-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),backdrop-filter var(--dur) var(--ease);
}
.site-header.is-stuck{
  background:rgba(247,245,240,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  box-shadow:var(--sh-2);
}
.nav-top-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:none;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--ink-light),var(--ink-deep));
  color:var(--text-inv);font-size:15px;font-weight:700;letter-spacing:.02em;
}
.brand-text{font-size:18px;font-weight:700;color:var(--ink-deep);letter-spacing:-.02em;white-space:nowrap}
.search-box{
  flex:1;min-width:0;max-width:430px;position:relative;display:flex;align-items:center;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-pill);
  height:42px;padding:0 6px 0 18px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.search-box:focus-within{border-color:var(--celadon);box-shadow:0 0 0 3px rgba(47,167,155,.14)}
.search-box input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text);
}
.search-box input::placeholder{color:var(--text-3)}
.search-btn{
  width:32px;height:32px;border-radius:50%;flex:none;display:grid;place-items:center;
  background:var(--ink);color:var(--text-inv);
  transition:background-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.search-btn:hover{background:var(--celadon);transform:scale(1.04)}
.nav-quick{display:flex;align-items:center;gap:18px;margin-left:auto;flex:none}
.quick-link{font-size:14px;color:var(--text-2);font-weight:500;position:relative;transition:color var(--dur) var(--ease)}
.quick-link:hover{color:var(--celadon)}
.nav-channels{border-top:1px solid var(--border)}
.nav-channels-inner{display:flex;align-items:center;gap:8px;height:48px}
.channel-nav{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.channel-nav::-webkit-scrollbar{display:none}
.channel-link{
  position:relative;flex:none;
  padding:0 14px;height:48px;display:inline-flex;align-items:center;
  font-size:15px;font-weight:500;color:var(--text-2);
  transition:color var(--dur) var(--ease);
}
.channel-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:8px;height:2px;border-radius:2px;
  background:var(--celadon);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.channel-link:hover{color:var(--ink)}
.channel-link:hover::after{transform:scaleX(1)}
.channel-link.is-active{color:var(--ink-deep);font-weight:700}
.channel-link.is-active::after{transform:scaleX(1)}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--border);background:var(--card);
  align-items:center;justify-content:center;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,44,42,.42);z-index:140;
  opacity:0;visibility:hidden;transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);z-index:150;
  background:var(--bg);box-shadow:var(--sh-3);
  transform:translateX(100%);transition:transform 240ms var(--ease);
  display:flex;flex-direction:column;padding:20px;gap:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:var(--card);display:grid;place-items:center;font-size:20px;color:var(--text-2)}
.drawer-nav{display:flex;flex-direction:column;gap:2px}
.drawer-nav a{padding:12px 14px;border-radius:12px;font-size:15px;color:var(--text-2);min-height:44px;display:flex;align-items:center}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--celadon-soft);color:var(--ink-deep);font-weight:600}

/* ---------- 锚点子导航 ---------- */
.anchor-bar{
  position:sticky;top:112px;z-index:90;
  background:rgba(247,245,240,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
}
.anchor-inner{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;padding:8px 0}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-item{
  flex:none;padding:6px 14px;border-radius:var(--r-pill);
  font-size:14px;font-weight:500;color:var(--text-2);
  border:1px solid transparent;
  transition:all var(--dur) var(--ease);
}
.anchor-item:hover{color:var(--ink);background:var(--surface-2)}
.anchor-item.is-active{background:var(--celadon-soft);color:var(--ink-light);border-color:rgba(47,167,155,.35);font-weight:600}

/* ---------- 通用板块 ---------- */
.section{padding:64px 0}
@media(min-width:1024px){.section{padding:96px 0}}
.section-head{max-width:760px;margin-bottom:40px}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--celadon);
  text-transform:uppercase;margin-bottom:14px;
}
.section-tag::before{content:"";width:20px;height:2px;background:var(--celadon);border-radius:2px}
.section-title{font-size:30px;line-height:1.32;color:var(--ink-deep)}
@media(min-width:768px){.section-title{font-size:34px}}
.section-sub{margin-top:14px;color:var(--text-2);font-size:16px}
.dark-section{background:var(--dark);color:var(--text-inv)}
.dark-section .section-title{color:var(--text-inv)}
.dark-section .section-sub{color:#A9B4B2}
.dark-section .section-tag{color:var(--celadon)}

/* ---------- Hero ---------- */
.hero{padding:52px 0 40px}
.hero-grid{display:grid;gap:36px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:1.02fr .98fr;gap:56px}}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-pill);
  padding:6px 14px;font-size:13px;color:var(--text-2);font-weight:500;margin-bottom:20px;
  box-shadow:var(--sh-1);
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);flex:none}
.hero h1{color:var(--ink-deep);font-size:32px;line-height:1.25}
@media(min-width:768px){.hero h1{font-size:44px}}
@media(min-width:1280px){.hero h1{font-size:50px}}
.hero h1 em{font-style:normal;color:var(--celadon)}
.hero-lead{margin-top:18px;font-size:17px;color:var(--text-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-media{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  aspect-ratio:16/10;box-shadow:var(--sh-3);background:var(--surface-2);
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,44,42,0) 38%,rgba(11,44,42,.78) 100%);
}
.hero-media-cap{
  position:absolute;left:22px;right:22px;bottom:20px;z-index:2;color:#fff;
}
.hero-media-cap strong{display:block;font-size:16px;font-weight:600;margin-bottom:4px}
.hero-media-cap span{font-size:13px;color:rgba(255,255,255,.78)}

/* 数据条 */
.stats{margin-top:44px;background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.stats-inner{display:flex;overflow-x:auto;scrollbar-width:none}
.stats-inner::-webkit-scrollbar{display:none}
.stat{flex:1 0 190px;padding:22px 26px;border-right:1px solid var(--border)}
.stat:last-child{border-right:0}
.stat-num{font-family:"Inter","Segoe UI",system-ui,sans-serif;font-size:30px;font-weight:700;color:var(--ink-deep);line-height:1.1;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stat-num small{font-size:14px;font-weight:600;color:var(--text-3);margin-left:4px}
.stat-label{margin-top:6px;font-size:12px;color:var(--text-3);letter-spacing:.02em}

/* ---------- 卖点：编号竖排 ---------- */
.adv-grid{display:grid;gap:40px}
@media(min-width:1024px){.adv-grid{grid-template-columns:1fr 1.06fr;gap:64px;align-items:start}}
.adv-side{position:relative}
.adv-side .side-note{
  margin-top:28px;padding:20px 22px;border-left:3px solid var(--amber);
  background:var(--amber-soft);border-radius:0 var(--r-md) var(--r-md) 0;
  font-size:15px;color:#6E4318;line-height:1.75;
}
.adv-list{display:flex;flex-direction:column}
.adv-item{
  display:grid;grid-template-columns:64px 1fr;gap:20px;
  padding:26px 0;border-top:1px solid var(--border);
}
.adv-item:last-child{border-bottom:1px solid var(--border)}
.adv-no{
  font-family:"Inter","Segoe UI",system-ui,sans-serif;
  font-size:30px;font-weight:700;color:var(--celadon);line-height:1;
  opacity:.85;letter-spacing:-.03em;
}
.adv-item h3{font-size:19px;color:var(--ink-deep);margin-bottom:8px}
.adv-item p{font-size:15px;color:var(--text-2);margin:0}
.adv-media{margin-top:36px;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:16/10}
.adv-media img{width:100%;height:100%;object-fit:cover}

/* ---------- 演示 ---------- */
.tabs{display:flex;gap:6px;border-bottom:1px solid var(--border);overflow-x:auto;scrollbar-width:none;margin-bottom:32px}
.tabs::-webkit-scrollbar{display:none}
.tab{
  flex:none;padding:12px 4px;margin-right:22px;font-size:15px;font-weight:500;color:var(--text-2);
  border-bottom:2px solid transparent;margin-bottom:-1px;min-height:44px;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.tab:hover{color:var(--ink)}
.tab.is-active{color:var(--ink-deep);font-weight:700;border-bottom-color:var(--celadon)}
.demo-panel{display:none}
.demo-panel.is-active{display:block;animation:fadeUp 240ms var(--ease)}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.demo-grid{display:grid;gap:34px}
@media(min-width:1024px){.demo-grid{grid-template-columns:1.1fr .9fr;gap:52px;align-items:start}}
.browser-frame{
  border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;
  background:var(--card);box-shadow:var(--sh-2);
}
.browser-bar{display:flex;align-items:center;gap:8px;padding:10px 14px;background:var(--surface-2);border-bottom:1px solid var(--border)}
.browser-bar i{width:10px;height:10px;border-radius:50%;background:#CFC8BC;display:block}
.browser-bar i:nth-child(1){background:#DDA9A0}
.browser-bar i:nth-child(2){background:#E3C48D}
.browser-bar i:nth-child(3){background:#9FC7AE}
.browser-url{margin-left:10px;flex:1;height:24px;border-radius:var(--r-pill);background:var(--card);border:1px solid var(--border)}
.browser-body{aspect-ratio:16/10;background:var(--surface-2)}
.browser-body img{width:100%;height:100%;object-fit:cover}
.steps{display:flex;flex-direction:column;gap:2px}
.step{display:grid;grid-template-columns:44px 1fr;gap:16px;padding:18px 0;border-bottom:1px dashed var(--border)}
.step:last-child{border-bottom:0}
.step-no{
  width:32px;height:32px;border-radius:50%;display:grid;place-items:center;
  background:var(--celadon-soft);color:var(--ink-light);font-weight:700;font-size:14px;
  font-family:"Inter","Segoe UI",system-ui,sans-serif;
}
.step h4{color:var(--ink-deep);margin-bottom:6px}
.step p{font-size:14px;color:var(--text-2);margin:0}

/* ---------- 证据（深色） ---------- */
.proof-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--border-dark);border-radius:var(--r-card);overflow:hidden;margin-bottom:52px}
@media(min-width:768px){.proof-stats{grid-template-columns:repeat(4,1fr)}}
.proof-stat{background:var(--dark-2);padding:26px 22px}
.proof-stat strong{display:block;font-family:"Inter","Segoe UI",system-ui,sans-serif;font-size:28px;font-weight:700;color:var(--celadon);letter-spacing:-.02em;line-height:1.1}
.proof-stat span{display:block;margin-top:8px;font-size:13px;color:#93A09E}
.proof-cards{display:grid;gap:22px;align-items:start}
@media(min-width:768px){.proof-cards{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.proof-cards{grid-template-columns:repeat(3,1fr)}}
.proof-card{
  background:var(--dark-2);border:1px solid var(--border-dark);border-radius:var(--r-card);
  padding:26px;transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.proof-card:hover{transform:translateY(-4px);border-color:var(--celadon);box-shadow:0 18px 40px rgba(0,0,0,.4)}
@media(min-width:1024px){
  .proof-card:nth-child(2){margin-top:28px}
  .proof-card:nth-child(3){margin-top:-14px}
}
.proof-card h3{font-size:18px;color:var(--text-inv);margin:16px 0 10px}
.proof-card p{font-size:14px;color:#A9B4B2;margin:0 0 18px}
.proof-card .btn-plain{color:var(--celadon)}
.timeline{margin-top:56px;display:flex;flex-wrap:wrap;gap:0;border-top:1px solid var(--border-dark);padding-top:28px}
.timeline li{flex:1 1 200px;padding-right:24px;position:relative}
.timeline li::before{content:"";position:absolute;top:-33px;left:0;width:10px;height:10px;border-radius:50%;background:var(--celadon);box-shadow:0 0 0 4px rgba(47,167,155,.18)}
.timeline b{display:block;font-size:14px;color:var(--text-inv);margin-bottom:6px}
.timeline span{font-size:13px;color:#93A09E}

/* ---------- 方案 ---------- */
.price-grid{display:grid;gap:24px}
@media(min-width:768px){.price-grid{grid-template-columns:repeat(3,1fr)}}
.plan{
  position:relative;background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:32px 28px;display:flex;flex-direction:column;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.plan:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--celadon)}
.plan-featured{border-color:var(--amber);box-shadow:var(--sh-3);transform:translateY(-8px)}
.plan-featured:hover{transform:translateY(-10px)}
.plan-flag{
  position:absolute;top:-13px;right:24px;
  background:var(--amber);color:#fff;font-size:12px;font-weight:700;
  padding:4px 14px;border-radius:var(--r-pill);letter-spacing:.04em;
}
.plan h3{font-size:19px;color:var(--ink-deep)}
.plan-desc{font-size:14px;color:var(--text-3);margin-top:8px}
.plan-price{margin:22px 0 8px;display:flex;align-items:baseline;gap:8px}
.plan-price strong{font-family:"Inter","Segoe UI",system-ui,sans-serif;font-size:34px;font-weight:700;color:var(--ink-deep);letter-spacing:-.02em}
.plan-price span{font-size:14px;color:var(--text-3)}
.plan-line{height:1px;background:var(--border);margin:20px 0}
.plan ul{display:flex;flex-direction:column;gap:12px;margin-bottom:26px;flex:1}
.plan li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);line-height:1.7}
.plan li svg{flex:none;margin-top:6px;color:var(--celadon)}

/* ---------- 最新信息 ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px;flex-wrap:wrap}
.news-grid{display:grid;gap:24px}
@media(min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.news-card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:var(--celadon)}
.news-cover{aspect-ratio:16/10;background:var(--surface-2);overflow:hidden}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-3);margin-bottom:12px}
.news-card h3{font-size:17px;line-height:1.5;color:var(--ink-deep);margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card p{font-size:14px;color:var(--text-2);line-height:1.7;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--border);font-size:13px;color:var(--celadon);font-weight:600;display:flex;align-items:center;gap:6px}
.empty-state{
  border:1px dashed var(--border);border-radius:var(--r-card);background:var(--card);
  padding:56px 24px;text-align:center;
}
.empty-shape{width:72px;height:72px;margin:0 auto 20px;border-radius:20px;background:var(--surface-2);position:relative;overflow:hidden}
.empty-shape::before{content:"";position:absolute;inset:18px;border-radius:50%;background:var(--celadon-soft);border:2px solid var(--celadon)}
.empty-state p{color:var(--text-2);font-size:15px;margin:0 0 20px}
.empty-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--border)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 4px;min-height:56px;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--ink-deep);
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--celadon)}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--border);
  display:grid;place-items:center;color:var(--text-2);
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--celadon);border-color:var(--celadon);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms var(--ease)}
.faq-a-inner{padding:0 44px 22px 4px;font-size:15px;color:var(--text-2);line-height:1.8}

/* ---------- 尾部 CTA ---------- */
.cta-band{background:var(--dark);margin-top:64px}
.cta-band-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding:34px 0;
}
.cta-band h2{font-size:22px;color:var(--text-inv);margin:0;line-height:1.45;max-width:620px}
.cta-band p{margin:8px 0 0;font-size:14px;color:#A9B4B2}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--text-inv);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;gap:40px;padding-bottom:48px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:linear-gradient(140deg,var(--celadon),var(--ink-lighter))}
.footer-brand .brand-text{color:var(--text-inv)}
.footer-desc{font-size:14px;color:#A9B4B2;line-height:1.8;max-width:320px;margin:0}
.footer-col h4{font-size:15px;color:var(--text-inv);margin-bottom:18px;font-weight:600}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:rgba(242,240,234,.7);width:fit-content;transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);border-bottom:1px solid transparent}
.footer-links a:hover{color:var(--celadon);border-bottom-color:var(--celadon);transform:translateX(2px)}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:rgba(242,240,234,.7)}
.footer-contact span{display:flex;gap:10px;line-height:1.7}
.footer-bottom{
  border-top:1px solid var(--border-dark);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7E8C8A;
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--r-pill);border:1px solid var(--border-dark);
  color:rgba(242,240,234,.8);font-size:13px;transition:all var(--dur) var(--ease);
}
.to-top:hover{border-color:var(--celadon);color:var(--celadon)}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:110;
  display:flex;align-items:center;gap:10px;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-pill);
  padding:8px 8px 8px 18px;box-shadow:var(--sh-3);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity 240ms var(--ease),transform 240ms var(--ease),visibility 240ms var(--ease);
}
.float-cta.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta span{font-size:14px;color:var(--text-2);font-weight:500}
.float-close{
  width:32px;height:32px;border-radius:50%;display:grid;place-items:center;
  color:var(--text-3);transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.float-close:hover{background:var(--surface-2);color:var(--text)}
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:115;
  background:rgba(247,245,240,.97);backdrop-filter:blur(10px);
  border-top:1px solid var(--border);padding:10px 16px;gap:10px;
  align-items:center;box-shadow:0 -6px 20px rgba(15,59,56,.08);
}
.mobile-bar .btn{flex:1}
.mobile-bar .mobile-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:var(--card);display:grid;place-items:center;color:var(--text-3);flex:none}

@media(max-width:1023px){
  .search-box{display:none}
  .nav-quick .quick-link{display:none}
  .menu-toggle{display:flex}
}
@media(max-width:767px){
  .nav-top-inner{height:58px;gap:12px}
  .brand-text{font-size:16px}
  h1{font-size:28px}
  .hero{padding:36px 0 28px}
  .hero h1{font-size:28px}
  .hero-lead{font-size:15.5px}
  .section{padding:56px 0}
  .section-title{font-size:26px}
  .adv-item{grid-template-columns:48px 1fr;gap:14px}
  .adv-no{font-size:24px}
  .stat{flex:1 0 160px;padding:18px 20px}
  .plan-featured{transform:none}
  .plan-featured:hover{transform:translateY(-3px)}
  .cta-band-inner{padding:28px 0}
  .cta-band h2{font-size:19px}
  .float-cta{display:none}
  .mobile-bar{display:flex}
  .anchor-bar{top:106px}
  .site-footer{padding-top:48px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --brand:#0F3B38;
  --brand-deep:#0B2C2A;
  --brand-light:#14544F;
  --brand-2:#1E6E67;
  --teal:#2FA79B;
  --teal-hover:#248C82;
  --teal-soft:#E4F2F0;
  --amber:#E08A3C;
  --amber-hover:#C9762C;
  --amber-soft:#FBEDE0;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#EFEBE3;
  --dark:#0E1514;
  --dark-2:#16201F;
  --text:#141A19;
  --text-2:#4C5755;
  --text-3:#7C8785;
  --on-dark:#F2F0EA;
  --border:#E2DDD4;
  --border-dark:#2A3735;
  --ok:#3E8E5A;
  --warn:#C98A1E;
  --err:#C0503F;
  --info:#2F7FA7;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,59,56,.05);
  --sh-2:0 6px 20px rgba(15,59,56,.08);
  --sh-3:0 18px 44px rgba(15,59,56,.12);
  --container:1240px;
  --t:200ms ease-out;
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-2);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--amber-hover);}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.01em;}
p{margin:0 0 1.4em;}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:10px;border:1px solid transparent;cursor:pointer;
  font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:transform var(--t),box-shadow var(--t),background-color var(--t),color var(--t),border-color var(--t);
}
.btn-sm{height:32px;padding:0 14px;font-size:13px;}
.btn-md{height:42px;padding:0 20px;font-size:15px;}
.btn-lg{height:50px;padding:0 26px;font-size:16px;}
.btn-primary{background:var(--amber);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--amber-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-outline{background:transparent;color:var(--brand);border-color:rgba(15,59,56,.35);}
.btn-outline:hover{background:var(--teal-soft);color:var(--brand);border-color:var(--teal);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--brand-2);padding:0 4px;height:auto;}
.btn-ghost:hover{color:var(--amber-hover);}
.btn-ghost svg{transition:transform var(--t);}
.btn-ghost:hover svg{transform:translateX(3px);}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;line-height:1;letter-spacing:.02em;
}
.badge-teal{background:var(--teal-soft);color:#19635C;}
.badge-amber{background:var(--amber-soft);color:#95561A;}
.badge-slate{background:#E8EEEC;color:#3E5A56;}
.badge-ochre{background:#F6EAE1;color:#7E4526;}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(247,245,240,.96);
  border-bottom:1px solid var(--border);
  transition:box-shadow var(--t),background-color var(--t);
}
.site-header.is-stuck{
  background:rgba(247,245,240,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  box-shadow:var(--sh-2);
}
.brand-row{
  display:flex;align-items:center;gap:24px;
  min-height:64px;padding:10px 0;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-2) 100%);
  color:var(--on-dark);font-size:15px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{font-size:19px;font-weight:700;color:var(--brand);letter-spacing:-.01em;}
.brand-text:hover{color:var(--brand-2);}
.search-form{
  flex:1 1 auto;max-width:420px;position:relative;display:flex;align-items:center;
}
.search-input{
  width:100%;height:42px;padding:0 52px 0 16px;
  border:1px solid var(--border);border-radius:var(--r-pill);
  background:var(--surface);color:var(--text);font-size:14.5px;
  transition:border-color var(--t),box-shadow var(--t);
}
.search-input::placeholder{color:var(--text-3);}
.search-input:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(47,167,155,.16);}
.search-btn{
  position:absolute;right:4px;top:50%;transform:translateY(-50%);
  width:34px;height:34px;border-radius:50%;border:0;
  background:var(--brand);color:var(--on-dark);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:background-color var(--t);
}
.search-btn:hover{background:var(--brand-2);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto;}
.header-link{
  font-size:14.5px;color:var(--text-2);font-weight:500;padding:8px 4px;
}
.header-link:hover{color:var(--brand);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--border);background:var(--surface);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--teal);}

.channel-bar{border-top:1px solid var(--border);}
.channel-nav{
  display:flex;align-items:center;gap:6px;
  min-height:46px;overflow-x:auto;scrollbar-width:none;
}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-link{
  position:relative;flex:0 0 auto;
  padding:11px 14px;font-size:14.5px;font-weight:500;color:var(--text-2);
  border-radius:8px;white-space:nowrap;transition:color var(--t),background-color var(--t);
}
.channel-link:hover{color:var(--brand);background:rgba(47,167,155,.08);}
.channel-link.is-active{color:var(--brand);font-weight:700;}
.channel-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  border-radius:2px;background:var(--teal);
}
.trend-tag{
  flex:0 0 auto;height:28px;padding:0 12px;border-radius:var(--r-pill);
  border:1px solid var(--border);font-size:13px;color:var(--text-2);
  display:inline-flex;align-items:center;transition:all var(--t);
}
.trend-tag:hover{border-color:var(--teal);color:var(--brand);background:var(--teal-soft);}
.channel-divider{width:1px;height:20px;background:var(--border);margin:0 8px;flex:0 0 auto;}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,21,20,.5);z-index:200;
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:210;
  background:var(--surface);box-shadow:var(--sh-3);
  transform:translateX(102%);transition:transform 240ms ease-out;
  padding:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--border);
  background:var(--surface);cursor:pointer;display:flex;align-items:center;justify-content:center;
}
.drawer-search{display:flex;gap:8px;margin-bottom:18px;}
.drawer-search input{
  flex:1;height:44px;border-radius:10px;border:1px solid var(--border);padding:0 12px;font-size:15px;
}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:20px;}
.drawer-links a{
  min-height:46px;display:flex;align-items:center;padding:0 12px;border-radius:10px;
  color:var(--text);font-size:15.5px;font-weight:500;
}
.drawer-links a:hover{background:var(--teal-soft);color:var(--brand);}
.drawer-links a.is-active{background:var(--teal-soft);color:var(--brand);font-weight:700;}

/* ---------- 文章头部 ---------- */
.article-hero{padding:40px 0 32px;background:linear-gradient(180deg,#FDFCF9 0%,var(--bg) 100%);}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13.5px;color:var(--text-3);margin-bottom:20px;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--brand-2);}
.breadcrumb .sep{color:var(--border);}
.breadcrumb .current{color:var(--text-3);max-width:44ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{
  font-size:clamp(28px,3.6vw,44px);line-height:1.28;font-weight:700;
  margin:14px 0 18px;max-width:20ch;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px 20px;
  font-size:13.5px;color:var(--text-3);padding-top:4px;
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--border);}
.article-meta strong{color:var(--text-2);font-weight:600;}

/* ---------- 布局 ---------- */
.article-shell{padding:8px 0 72px;}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px;align-items:start;
}
.article-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:40px 44px;
}
.article-body{max-width:760px;font-size:17px;line-height:1.85;color:var(--text);}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  font-size:30px;line-height:1.32;font-weight:700;
  margin:52px 0 16px;padding-left:16px;position:relative;scroll-margin-top:120px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;
  border-radius:3px;background:var(--teal);
}
.article-body h3{
  font-size:22px;line-height:1.4;font-weight:600;margin:36px 0 12px;scroll-margin-top:120px;
}
.article-body h4{font-size:17.5px;font-weight:600;margin:26px 0 10px;}
.article-body p{margin:0 0 1.5em;color:var(--text-2);}
.article-body strong{color:var(--text);}
.article-body a{color:var(--brand-2);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--amber-hover);}
.article-body ul,.article-body ol{margin:0 0 1.6em;padding-left:0;}
.article-body ul li,.article-body ol li{position:relative;padding-left:26px;margin-bottom:10px;color:var(--text-2);}
.article-body ul li::before{
  content:"";position:absolute;left:6px;top:.72em;width:7px;height:7px;
  border-radius:2px;background:var(--teal);transform:rotate(45deg);
}
.article-body ol{counter-reset:item;}
.article-body ol li{counter-increment:item;}
.article-body ol li::before{
  content:counter(item,decimal-leading-zero);
  position:absolute;left:0;top:0;color:var(--brand-2);font-weight:700;font-size:14px;
  font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:28px 0;padding:18px 22px;background:#F3F1EB;
  border-left:3px solid var(--teal);border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--text-2);font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:14px;margin:24px 0;box-shadow:var(--sh-1);}
.article-body figure{margin:28px 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--text-3);margin-top:10px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15.5px;
  display:block;overflow-x:auto;
}
.article-body th,.article-body td{
  border:1px solid var(--border);padding:12px 14px;text-align:left;color:var(--text-2);
}
.article-body thead th{background:var(--surface-2);color:var(--text);font-weight:600;}
.article-body tbody tr:nth-child(even){background:#FBFAF7;}
.article-body hr{
  border:0;height:1px;background:var(--border);margin:44px 0;
}
.article-body code{
  background:var(--surface-2);padding:2px 6px;border-radius:6px;font-size:15px;
}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:132px;display:flex;flex-direction:column;gap:18px;}
.side-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:20px;box-shadow:var(--sh-1);
}
.side-title{
  font-size:15px;font-weight:700;color:var(--brand);
  display:flex;align-items:center;gap:8px;margin-bottom:14px;
}
.side-title span.line{flex:1;height:1px;background:var(--border);}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:340px;overflow-y:auto;}
.toc-list a{
  display:block;font-size:14px;line-height:1.5;color:var(--text-2);
  padding:7px 10px;border-radius:8px;border-left:2px solid transparent;
  transition:all var(--t);
}
.toc-list a:hover{background:var(--teal-soft);color:var(--brand);}
.toc-list a.is-current{background:var(--teal-soft);color:var(--brand);font-weight:600;border-left-color:var(--teal);}
.toc-list a.lv3{padding-left:24px;font-size:13.5px;color:var(--text-3);}
.toc-empty{font-size:13.5px;color:var(--text-3);}
.side-links{display:flex;flex-direction:column;gap:2px;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:14px;color:var(--text-2);padding:9px 10px;border-radius:8px;transition:all var(--t);
}
.side-links a:hover{background:var(--teal-soft);color:var(--brand);}
.side-links a svg{flex:0 0 auto;color:var(--text-3);}
.cta-card{
  background:linear-gradient(150deg,var(--brand-deep) 0%,var(--brand-2) 100%);
  border:0;color:var(--on-dark);
}
.cta-card h3{color:#fff;font-size:18px;margin-bottom:8px;}
.cta-card p{color:rgba(242,240,234,.78);font-size:13.5px;line-height:1.7;margin-bottom:16px;}
.cta-card .btn{width:100%;}
.toc-mobile{display:none;margin-bottom:16px;}
.toc-mobile summary{
  list-style:none;cursor:pointer;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r-md);padding:12px 16px;font-weight:600;color:var(--brand);font-size:15px;
  display:flex;align-items:center;justify-content:space-between;
}
.toc-mobile summary::-webkit-details-marker{display:none;}
.toc-mobile .toc-list{margin-top:10px;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r-md);padding:10px;}

/* ---------- 空态 ---------- */
.empty-state{
  background:var(--surface);border:1px dashed var(--border);border-radius:var(--r-lg);
  padding:56px 32px;text-align:center;
}
.empty-art{
  width:96px;height:96px;margin:0 auto 20px;border-radius:24px;
  background:var(--surface-2);display:flex;align-items:center;justify-content:center;
  color:var(--brand-2);
}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--text-2);font-size:15px;max-width:44ch;margin:0 auto 22px;}

/* ---------- 标签 & 相关 ---------- */
.article-foot{margin-top:32px;padding-top:26px;border-top:1px solid var(--border);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px;}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--surface-2);color:var(--text-2);font-size:13px;transition:all var(--t);
}
.tag:hover{background:var(--teal-soft);color:var(--brand);}
.related-section{padding:8px 0 72px;}
.section-head{margin-bottom:28px;}
.section-head h2{font-size:30px;line-height:1.3;}
.section-head p{color:var(--text-2);font-size:15px;margin:10px 0 0;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--teal);}
.card-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--surface-2);}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform 300ms ease-out;}
.card:hover .card-cover img{transform:scale(1.04);}
.card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:17.5px;line-height:1.5;font-weight:600;}
.card-body h3 a{color:var(--text);}
.card-body h3 a:hover{color:var(--brand-2);}
.card-body p{font-size:14px;color:var(--text-2);line-height:1.7;margin:0;}
.card-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--text-3);}

/* ---------- FAQ ---------- */
.faq-section{padding:8px 0 72px;}
.faq-list{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:6px 26px;box-shadow:var(--sh-1);
}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  list-style:none;cursor:pointer;min-height:56px;padding:14px 0;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  font-size:16.5px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";flex:0 0 auto;width:10px;height:10px;
  border-right:2px solid var(--brand-2);border-bottom:2px solid var(--brand-2);
  transform:rotate(45deg);transition:transform var(--t);
}
.faq-item[open] summary::after{transform:rotate(-135deg);}
.faq-answer{
  padding:0 0 20px;color:var(--text-2);font-size:15.5px;line-height:1.8;max-width:76ch;
}
.faq-answer p:last-child{margin-bottom:0;}

/* ---------- CTA 窄带 ---------- */
.cta-band{
  background:var(--dark);color:var(--on-dark);
  padding:56px 0;margin-bottom:96px;border-radius:0;
}
.cta-band .inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:26px;line-height:1.4;}
.cta-band p{color:rgba(242,240,234,.72);font-size:14.5px;margin:8px 0 0;}
.cta-band .btn-row{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:150;
  display:flex;align-items:center;gap:10px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-pill);
  padding:8px 10px 8px 16px;box-shadow:var(--sh-3);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--t),transform var(--t),visibility var(--t);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta .float-text{font-size:14px;color:var(--text-2);font-weight:500;}
.float-close{
  width:30px;height:30px;border-radius:50%;border:1px solid var(--border);
  background:var(--surface);cursor:pointer;display:flex;align-items:center;justify-content:center;
  color:var(--text-3);
}
.float-close:hover{color:var(--err);border-color:var(--err);}
.to-top-inline{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--border);
  background:var(--surface-2);cursor:pointer;display:flex;align-items:center;justify-content:center;
  color:var(--brand);
}
.to-top-inline:hover{border-color:var(--teal);background:var(--teal-soft);}
.mobile-bar{display:none;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(242,240,234,.72);padding:64px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid var(--border-dark);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{background:linear-gradient(140deg,var(--teal) 0%,var(--brand-2) 100%);color:#08211F;}
.footer-brand .brand-text{color:#fff;font-size:18px;}
.footer-desc{font-size:14px;line-height:1.75;color:rgba(242,240,234,.66);max-width:34ch;margin:0;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  color:rgba(242,240,234,.7);font-size:14px;width:fit-content;
  transition:color var(--t),border-color var(--t);
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.footer-links a:hover{color:var(--teal);border-bottom-color:var(--teal);}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(242,240,234,.7);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0 30px;font-size:13px;color:rgba(242,240,234,.55);
}
.to-top{
  display:inline-flex;align-items:center;gap:6px;
  color:rgba(242,240,234,.72);font-size:13.5px;
}
.to-top:hover{color:var(--teal);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 272px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap;}
  .article-side > .side-card{flex:1 1 260px;}
  .aside-toc{display:none;}
  .toc-mobile{display:block;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .article-card{padding:32px 28px;}
  .article-title{max-width:none;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .header-actions .header-link,.header-actions .btn{display:none;}
  .nav-toggle{display:flex;}
  .search-form{max-width:none;}
  .brand-text{font-size:17px;}
  .brand-mark{width:30px;height:30px;font-size:14px;}
  .brand-row{gap:14px;flex-wrap:nowrap;}
  .search-form{order:3;flex-basis:100%;max-width:none;}
  .brand-row{flex-wrap:wrap;padding:12px 0;}
  .channel-nav{min-height:44px;}
  .article-hero{padding:26px 0 22px;}
  .article-card{padding:24px 18px;border-radius:14px;}
  .article-body h2{font-size:23px;margin-top:38px;}
  .article-body h3{font-size:19px;}
  .article-body{font-size:16px;line-height:1.78;}
  .article-body table{font-size:14.5px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .cta-band{margin-bottom:64px;padding:40px 0;}
  .cta-band h2{font-size:21px;}
  .faq-list{padding:4px 18px;}
  .faq-item summary{font-size:15.5px;}
  .float-cta{display:none;}
  .mobile-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:160;
    align-items:center;gap:10px;padding:10px 16px;
    background:rgba(247,245,240,.96);backdrop-filter:blur(10px);
    border-top:1px solid var(--border);box-shadow:0 -6px 20px rgba(15,59,56,.08);
  }
  .mobile-bar .btn{flex:1;}
  .mobile-bar .close{
    width:44px;height:44px;flex:0 0 auto;border-radius:10px;border:1px solid var(--border);
    background:var(--surface);display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-3);
  }
  .site-footer{padding-bottom:72px;}
}
@media (max-width:519px){
  .article-title{font-size:26px;}
  .article-meta{gap:8px 12px;}
  .breadcrumb .current{max-width:22ch;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
/* ===================== 设计变量 ===================== */
:root{
  --ink:#0F3B38;
  --ink-deep:#0B2C2A;
  --ink-light:#14544F;
  --ink-lighter:#1E6E67;
  --teal:#2FA79B;
  --teal-hover:#248C82;
  --teal-soft:#E4F2F0;
  --amber:#E08A3C;
  --amber-hover:#C9762C;
  --amber-soft:#FBEDE0;
  --bg:#F7F5F0;
  --card:#FFFFFF;
  --surface:#EFEBE3;
  --dark:#0E1514;
  --dark-2:#16201F;
  --text:#141A19;
  --text-2:#4C5755;
  --text-3:#7C8785;
  --text-inv:#F2F0EA;
  --line:#E2DDD4;
  --line-dark:#2A3735;
  --ok:#3E8E5A;
  --warn:#C98A1E;
  --err:#C0503F;
  --info:#2F7FA7;
  --badge-1:#2FA79B;
  --badge-2:#E08A3C;
  --badge-3:#5B7A76;
  --badge-4:#A2603C;

  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;

  --sh-1:0 1px 2px rgba(15,59,56,.05);
  --sh-2:0 6px 20px rgba(15,59,56,.08);
  --sh-3:0 18px 44px rgba(15,59,56,.12);

  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:200ms;

  --font-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","Segoe UI",Helvetica,Arial,sans-serif;
}

/* ===================== 基础 reset ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--ink-light);text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);}
a:hover{color:var(--amber);}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:-.01em;}
h1{font-size:clamp(28px,4.2vw,46px);line-height:1.25;}
h2{font-size:clamp(23px,2.6vw,32px);line-height:1.3;margin-top:48px;margin-bottom:16px;}
h3{font-size:clamp(19px,2vw,23px);line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0 0 1.4em;}
ul,ol{margin:0 0 1.4em;padding-left:1.35em;}
li{margin-bottom:.55em;}
hr{border:0;border-top:1px solid var(--line);margin:40px 0;}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}

/* ===================== 头部：品牌行 ===================== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,240,.92);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) var(--ease);
}
.site-header.is-stuck{box-shadow:var(--sh-2);}
.header-top{border-bottom:1px solid transparent;}
.header-top-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:64px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink);
  font-weight:700;
  font-size:19px;
  letter-spacing:-.01em;
}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:9px;
  background:var(--ink);
  color:var(--text-inv);
  font-size:16px;
  font-weight:700;
  box-shadow:var(--sh-1);
}
.brand-text{white-space:nowrap;}

.search-box{
  flex:1 1 auto;
  max-width:520px;
  display:flex;
  align-items:center;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:4px 4px 4px 16px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.search-box:focus-within{border-color:var(--teal);box-shadow:0 0 0 3px var(--teal-soft);}
.search-box input{
  flex:1 1 auto;
  border:0;
  background:transparent;
  height:38px;
  font-size:15px;
  outline:none;
}
.search-box input::placeholder{color:var(--text-3);}
.search-box button{
  width:36px;height:36px;
  border-radius:50%;
  display:grid;place-items:center;
  background:var(--teal);
  color:#fff;
  transition:background var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.search-box button:hover{background:var(--teal-hover);transform:translateY(-1px);}

.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto;}
.ghost-link{
  font-size:15px;color:var(--text-2);
  padding:8px 4px;
  border-bottom:1px solid transparent;
}
.ghost-link:hover{color:var(--ink);border-bottom-color:var(--teal);}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  padding:0 20px;
  height:44px;
  border-radius:var(--r-md);
  border:1px solid transparent;
  transition:all var(--dur) var(--ease);
  white-space:nowrap;
}
.btn svg{transition:transform var(--dur) var(--ease);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-primary{background:var(--amber);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--amber-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent;}
.btn-outline:hover{background:var(--teal-soft);border-color:var(--ink);color:var(--ink);}
.btn-ghost{padding:0;height:auto;color:var(--ink-light);font-weight:600;background:none;}
.btn-ghost:hover{color:var(--amber);}
.btn-ghost:hover svg{transform:translateX(3px);}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;pointer-events:none;}

/* ===================== 头部：频道条 ===================== */
.header-channels{border-top:1px solid var(--line);}
.channels-inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:48px;
}
.channel-nav{
  display:flex;
  align-items:center;
  gap:4px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-link{
  position:relative;
  flex:0 0 auto;
  padding:12px 14px 13px;
  font-size:15px;
  color:var(--text-2);
  border-bottom:2px solid transparent;
  white-space:nowrap;
}
.channel-link:hover{color:var(--ink);}
.channel-link.is-active{color:var(--ink);font-weight:600;border-bottom-color:var(--teal);}

.menu-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:10px;
  color:var(--ink);
  align-items:center;justify-content:center;
}
.menu-toggle:hover{background:var(--surface);}

/* ===================== 移动抽屉 ===================== */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(14,21,20,.45);
  opacity:0;visibility:hidden;
  transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
  z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;
  width:min(86vw,340px);
  background:var(--card);
  transform:translateX(100%);
  transition:transform 240ms var(--ease);
  z-index:90;
  display:flex;flex-direction:column;
  padding:20px;
  overflow-y:auto;
  box-shadow:var(--sh-3);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{width:44px;height:44px;border-radius:10px;display:grid;place-items:center;color:var(--text-2);}
.drawer-close:hover{background:var(--surface);color:var(--ink);}
.drawer .search-box{max-width:100%;margin-bottom:20px;}
.drawer-nav-title{font-size:13px;color:var(--text-3);letter-spacing:.08em;margin-bottom:8px;}
.drawer-nav{display:flex;flex-direction:column;margin-bottom:22px;}
.drawer-nav a{
  padding:13px 10px;
  font-size:16px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
  border-radius:0;
}
.drawer-nav a.is-active{color:var(--ink);font-weight:600;}
.drawer-nav a:hover{color:var(--ink);background:var(--teal-soft);}
.drawer .btn{width:100%;}

/* ===================== 面包屑 ===================== */
.breadcrumb{
  padding:22px 0 6px;
  font-size:13.5px;
  color:var(--text-3);
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--teal);}
.breadcrumb span.sep{margin:0 8px;color:var(--line);}
.breadcrumb .current{color:var(--text-2);}

/* ===================== 分类 Hero ===================== */
.hero-cat{padding:10px 0 0;}
.cat-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;
  border-radius:var(--r-pill);
  background:var(--teal-soft);
  color:var(--ink);
  font-size:13px;font-weight:600;
  letter-spacing:.02em;
  margin-bottom:18px;
}
.cat-badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--teal);}
.hero-cat h1{max-width:14em;}
.hero-sub{
  margin:16px 0 0;
  font-size:17px;
  color:var(--text-2);
  max-width:34em;
}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 13px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--card);
  font-size:13px;color:var(--text-2);
}
.tag:hover{border-color:var(--teal);color:var(--ink);}
.tag-amber{background:var(--amber-soft);border-color:transparent;color:#8A4E17;}
.tag-teal{background:var(--teal-soft);border-color:transparent;color:var(--ink-light);}

.hero-media{
  position:relative;
  margin:32px 0 0;
  border-radius:var(--r-lg);
  overflow:hidden;
  aspect-ratio:21/9;
  background:var(--ink-deep);
  box-shadow:var(--sh-2);
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,21,20,0) 38%,rgba(14,21,20,.78) 100%);
}
.hero-media-cap{
  position:absolute;
  left:32px;right:32px;bottom:24px;
  z-index:2;
  color:var(--text-inv);
  display:flex;flex-wrap:wrap;align-items:flex-end;
  justify-content:space-between;
  gap:12px;
}
.hero-media-cap strong{display:block;font-size:20px;font-weight:700;letter-spacing:-.01em;}
.hero-media-cap span{font-size:13.5px;color:rgba(242,240,234,.78);}

/* ===================== 主布局：7 / 5 ===================== */
.wrap{padding:64px 0 88px;}
.layout{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:56px;
  align-items:start;
}
.article-body{min-width:0;}
.article-body h2:first-child{margin-top:0;}
.article-body h3{margin:32px 0 12px;}
.article-body p{color:#2A3231;}
.article-body .lead{
  font-size:18px;
  color:var(--text);
  line-height:1.85;
  padding-left:18px;
  border-left:3px solid var(--teal);
}
.note{
  margin:28px 0;
  padding:20px 24px;
  background:var(--surface);
  border-left:3px solid var(--teal);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--text-2);
  font-size:15.5px;
}
.note strong{color:var(--ink);}

.figure{margin:32px 0;}
.figure img{
  width:100%;
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  aspect-ratio:16/10;
  object-fit:cover;
  background:var(--surface);
}
.figure figcaption{
  margin-top:10px;
  text-align:center;
  font-size:13px;
  color:var(--text-3);
}

.check-list{list-style:none;padding:0;margin:24px 0;}
.check-list li{
  position:relative;
  padding:12px 0 12px 34px;
  border-bottom:1px dashed var(--line);
  color:var(--text-2);
  margin:0;
}
.check-list li:last-child{border-bottom:0;}
.check-list li::before{
  content:"";
  position:absolute;left:6px;top:22px;
  width:12px;height:7px;
  border-left:2px solid var(--teal);
  border-bottom:2px solid var(--teal);
  transform:rotate(-45deg);
}
.num-list{list-style:none;padding:0;margin:24px 0;counter-reset:nl;}
.num-list li{
  position:relative;
  padding:10px 0 10px 44px;
  counter-increment:nl;
  color:var(--text-2);
}
.num-list li::before{
  content:counter(nl,decimal-leading-zero);
  position:absolute;left:0;top:9px;
  font-family:var(--font-num);
  font-size:15px;
  font-weight:600;
  color:var(--teal);
  letter-spacing:.02em;
}

/* ===================== 侧栏 ===================== */
.side-col{min-width:0;}
.side-sticky{position:sticky;top:132px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--sh-1);
}
.side-card h3{
  font-size:17px;
  margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.side-card h3::before{
  content:"";width:4px;height:16px;border-radius:2px;background:var(--teal);
}
.side-list{list-style:none;padding:0;margin:0;}
.side-list li{
  position:relative;
  padding:9px 0 9px 18px;
  font-size:14.5px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
  margin:0;
}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list li::before{
  content:"";position:absolute;left:0;top:18px;
  width:6px;height:6px;border-radius:50%;background:var(--amber);
}
.side-cta{
  background:linear-gradient(160deg,var(--ink) 0%,var(--ink-deep) 100%);
  color:var(--text-inv);
  border:0;
}
.side-cta h3{color:#fff;}
.side-cta h3::before{background:var(--amber);}
.side-cta p{color:rgba(242,240,234,.8);font-size:14.5px;margin-bottom:18px;}
.side-cta .btn{width:100%;}
.side-meta{
  display:flex;justify-content:space-between;
  font-size:13px;color:var(--text-3);
  padding-top:14px;margin-top:16px;
  border-top:1px solid var(--line);
}
.side-cta .side-meta{border-top-color:var(--line-dark);color:rgba(242,240,234,.6);}

/* ===================== 通用板块 ===================== */
.section{padding:88px 0;}
.section-alt{background:var(--surface);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-block;
  font-size:12.5px;font-weight:600;letter-spacing:.12em;
  color:var(--teal);
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-title{margin:0 0 14px;}
.section-desc{color:var(--text-2);margin:0;font-size:16.5px;}

/* 类型卡：非对称 2 + 1 */
.type-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
}
.type-card{
  grid-column:span 6;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.type-card.wide{grid-column:span 12;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:32px;align-items:center;}
.type-card:hover{transform:translateY(-3px);border-color:var(--teal);box-shadow:var(--sh-2);}
.type-card h3{margin-bottom:10px;}
.type-card p{color:var(--text-2);font-size:15.5px;margin-bottom:0;}
.type-card img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-md);background:var(--surface);
}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;
  border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;line-height:1.7;
  margin-bottom:14px;
}
.badge-1{background:rgba(47,167,155,.12);color:#1B6C64;}
.badge-2{background:rgba(224,138,60,.14);color:#8A4E17;}
.badge-3{background:rgba(91,122,118,.14);color:#3B5350;}
.badge-4{background:rgba(162,96,60,.14);color:#7A4526;}

/* 流程步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:st;}
.step{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px 24px 24px;
  box-shadow:var(--sh-1);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.step:hover{border-color:var(--teal);box-shadow:var(--sh-2);transform:translateY(-2px);}
.step-num{
  font-family:var(--font-num);
  font-size:34px;
  font-weight:700;
  line-height:1;
  color:var(--teal-soft);
  -webkit-text-stroke:1px var(--teal);
  display:block;
  margin-bottom:16px;
  letter-spacing:-.02em;
}
.step h4{margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--text-2);margin:0;}

/* 深色证据带 */
.dark-band{
  background:var(--dark);
  color:var(--text-inv);
  padding:88px 0;
}
.dark-band h2,.dark-band h3{color:#fff;}
.dark-band .section-desc{color:rgba(242,240,234,.72);}
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line-dark);
  margin-bottom:44px;
}
.stat-num{
  font-family:var(--font-num);
  font-size:clamp(30px,3.4vw,44px);
  font-weight:700;
  line-height:1.1;
  color:#fff;
  letter-spacing:-.02em;
}
.stat-num em{font-style:normal;font-size:.5em;color:var(--teal);margin-left:2px;}
.stat-label{font-size:13px;color:rgba(242,240,234,.62);margin-top:8px;}
.proof-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.proof-card{
  background:var(--dark-2);
  border:1px solid var(--line-dark);
  border-radius:var(--r-lg);
  padding:26px;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.proof-card:nth-child(2){margin-top:28px;}
.proof-card:nth-child(3){margin-top:14px;}
.proof-card:hover{transform:translateY(-3px);border-color:var(--teal);}
.proof-card h3{font-size:18px;margin-bottom:10px;}
.proof-card p{color:rgba(242,240,234,.7);font-size:14.5px;margin-bottom:0;}

/* FAQ */
.faq{max-width:880px;margin:0 auto;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:60px;
  padding:18px 4px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--ink-light);}
.faq-q .chev{
  flex:0 0 auto;
  width:20px;height:20px;
  transition:transform var(--dur) var(--ease);
  color:var(--teal);
}
.faq-item.is-open .faq-q{color:var(--ink);}
.faq-item.is-open .chev{transform:rotate(180deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 240ms var(--ease);
}
.faq-a-inner{padding:0 4px 22px;color:var(--text-2);font-size:15.5px;max-width:72ch;}

/* CTA 窄带 */
.cta-band{background:var(--dark);color:var(--text-inv);padding:56px 0;}
.cta-band-inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:clamp(20px,2.3vw,26px);margin:0;}
.cta-band p{color:rgba(242,240,234,.7);margin:8px 0 0;font-size:15px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-outline{border-color:rgba(242,240,234,.42);color:var(--text-inv);}
.cta-band .btn-outline:hover{background:rgba(242,240,234,.1);color:#fff;border-color:rgba(242,240,234,.7);}

/* ===================== 页脚 ===================== */
.site-footer{background:var(--dark);color:rgba(242,240,234,.72);padding:72px 0 0;}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--teal);color:#062A26;}
.footer-brand .brand-text{color:#fff;font-weight:700;font-size:18px;}
.footer-desc{font-size:14.5px;line-height:1.8;color:rgba(242,240,234,.66);margin:0;max-width:30ch;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(242,240,234,.72);font-size:14.5px;}
.footer-links a:hover{color:var(--teal);text-decoration:underline;text-underline-offset:4px;}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14.5px;color:rgba(242,240,234,.72);}
.footer-bottom{
  border-top:1px solid var(--line-dark);
  padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(242,240,234,.58);
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:rgba(242,240,234,.72);font-size:13.5px;}
.to-top:hover{color:var(--teal);}
.to-top svg{transition:transform var(--dur) var(--ease);}
.to-top:hover svg{transform:translateY(-2px);}

/* ===================== 浮动 CTA ===================== */
.float-cta{
  position:fixed;
  right:28px;bottom:28px;
  z-index:70;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity 240ms var(--ease),transform 240ms var(--ease),visibility 240ms var(--ease);
}
.float-cta.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.float-panel{
  display:flex;align-items:center;gap:10px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:8px 10px 8px 8px;
  box-shadow:var(--sh-3);
}
.float-panel .btn-primary{border-radius:var(--r-pill);}
.float-icon{
  width:38px;height:38px;border-radius:50%;
  display:grid;place-items:center;
  color:var(--ink);background:var(--surface);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.float-icon:hover{background:var(--teal-soft);color:var(--ink-light);}

/* ===================== 进场动效 ===================== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms var(--ease),transform 420ms var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ===================== 响应式 ===================== */
@media (max-width:1279px){
  .container{padding:0 24px;}
  .layout{gap:40px;}
}
@media (max-width:1023px){
  .layout{grid-template-columns:1fr;gap:44px;}
  .side-sticky{position:static;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .stat-row{grid-template-columns:repeat(2,1fr);gap:28px;}
  .proof-grid{grid-template-columns:1fr;}
  .proof-card:nth-child(2),.proof-card:nth-child(3){margin-top:0;}
  .type-card.wide{grid-template-columns:1fr;}
  .search-box{display:none;}
  .ghost-link{display:none;}
  .menu-toggle{display:flex;}
  .section{padding:64px 0;}
  .hero-media{aspect-ratio:16/10;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .header-top-inner{min-height:58px;gap:12px;}
  .brand{font-size:17px;}
  .brand-mark{width:30px;height:30px;font-size:14px;}
  .type-card{grid-column:span 12;padding:22px;}
  .type-grid{gap:16px;}
  .steps{grid-template-columns:1fr;gap:16px;}
  .stat-row{grid-template-columns:repeat(2,1fr);gap:20px;padding-bottom:32px;margin-bottom:32px;}
  .hero-media-cap{left:20px;right:20px;bottom:18px;flex-direction:column;align-items:flex-start;}
  .hero-media-cap strong{font-size:17px;}
  .section{padding:56px 0;}
  .cta-band-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:32px;}
  .float-cta{right:0;left:0;bottom:0;transform:translateY(0);}
  .float-panel{width:100%;border-radius:0;border-left:0;border-right:0;border-bottom:0;padding:8px 12px;}
  .float-panel .btn-primary{flex:1 1 auto;}
  .article-body .lead{font-size:17px;}
}
@media (max-width:479px){
  h1{font-size:27px;}
  .stat-row{grid-template-columns:1fr 1fr;}
  .btn{width:auto;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.01ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --c-primary:#0F3B38;
  --c-primary-dark:#0B2C2A;
  --c-primary-light:#14544F;
  --c-primary-mid:#1E6E67;
  --c-accent:#2FA79B;
  --c-accent-hover:#248C82;
  --c-accent-soft:#E4F2F0;
  --c-amber:#E08A3C;
  --c-amber-hover:#C9762C;
  --c-amber-soft:#FBEDE0;
  --c-bg:#F7F5F0;
  --c-surface:#FFFFFF;
  --c-surface-2:#EFEBE3;
  --c-dark:#0E1514;
  --c-dark-2:#16201F;
  --c-ink:#141A19;
  --c-ink-2:#4C5755;
  --c-ink-3:#7C8785;
  --c-inverse:#F2F0EA;
  --c-border:#E2DDD4;
  --c-border-dark:#2A3735;
  --c-success:#3E8E5A;
  --c-warn:#C98A1E;
  --c-error:#C0503F;
  --c-info:#2F7FA7;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,59,56,.05);
  --sh-2:0 6px 20px rgba(15,59,56,.08);
  --sh-3:0 18px 44px rgba(15,59,56,.12);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
  --fs-h1:clamp(28px,4.2vw,46px);
  --fs-h2:clamp(24px,3vw,32px);
  --fs-h3:clamp(19px,2vw,23px);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary-light);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--c-amber);}
button{font-family:inherit;}
h1,h2,h3,h4{letter-spacing:-.01em;color:var(--c-ink);}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:10px;border:1px solid transparent;
  font-weight:600;cursor:pointer;text-align:center;white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-md{height:44px;padding:0 22px;font-size:15.5px;}
.btn-lg{height:52px;padding:0 28px;font-size:16.5px;}
.btn-primary{background:var(--c-amber);color:#241605;box-shadow:0 2px 0 rgba(15,59,56,.06);}
.btn-primary:hover{background:var(--c-amber-hover);color:#241605;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-outline{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-outline:hover{background:var(--c-accent-soft);color:var(--c-primary);border-color:var(--c-primary-mid);}
.btn-ghost{background:transparent;color:var(--c-primary-light);padding:0 6px;}
.btn-ghost:hover{color:var(--c-amber);}
.btn-ghost .arrow{transition:transform .18s var(--ease);}
.btn-ghost:hover .arrow{transform:translateX(3px);}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;}
.btn-block{width:100%;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 12px;border-radius:var(--r-pill);
  font-size:12.5px;line-height:20px;font-weight:600;
}
.badge-teal{background:var(--c-accent-soft);color:#14544F;}
.badge-amber{background:var(--c-amber-soft);color:#8A5316;}
.badge-slate{background:#E7EDEC;color:#3C5653;}
.badge-clay{background:#F3E6DE;color:#7E4526;}
.tag-pill{
  display:inline-flex;align-items:center;
  padding:5px 13px;border:1px solid var(--c-border);border-radius:var(--r-pill);
  font-size:13px;color:var(--c-ink-2);background:transparent;white-space:nowrap;
  transition:border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease);
}
.tag-pill:hover{border-color:var(--c-accent);color:var(--c-primary);background:var(--c-accent-soft);}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--c-bg);
  border-bottom:1px solid transparent;
  transition:background-color .22s var(--ease),box-shadow .22s var(--ease),backdrop-filter .22s var(--ease);
}
.site-header.is-stuck{
  background:rgba(247,245,240,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  box-shadow:var(--sh-2);
}
.header-bar{border-bottom:1px solid var(--c-border);}
.header-inner{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--c-primary);color:var(--c-inverse);
  display:grid;place-items:center;font-size:16px;font-weight:700;
}
.brand-text{font-size:18px;font-weight:700;color:var(--c-primary);letter-spacing:-.01em;white-space:nowrap;}
.search-box{
  flex:1 1 auto;max-width:400px;display:flex;align-items:center;
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-pill);
  padding:3px 3px 3px 16px;height:44px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-box:focus-within{border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(47,167,155,.16);}
.search-box input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:15px;color:var(--c-ink);font-family:inherit;
}
.search-box input::placeholder{color:var(--c-ink-3);}
.search-btn{
  width:38px;height:38px;flex:0 0 auto;border:0;border-radius:50%;
  background:var(--c-accent);color:#fff;display:grid;place-items:center;cursor:pointer;
  transition:background-color .18s var(--ease);
}
.search-btn:hover{background:var(--c-accent-hover);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-border);border-radius:10px;
  background:var(--c-surface);color:var(--c-primary);cursor:pointer;place-items:center;
}
.channel-bar{border-bottom:1px solid var(--c-border);background:rgba(255,255,255,.55);}
.channel-inner{display:flex;align-items:center;gap:16px;height:48px;}
.channel-nav{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none;}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-link{
  position:relative;display:inline-flex;align-items:center;height:44px;
  padding:0 14px;border-radius:8px;font-size:15px;color:var(--c-ink-2);white-space:nowrap;
  transition:color .18s var(--ease),background-color .18s var(--ease);
}
.channel-link:hover{color:var(--c-primary);background:var(--c-accent-soft);}
.channel-link.is-active{color:var(--c-primary);font-weight:700;}
.channel-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:3px;
  background:var(--c-accent);border-radius:2px;
}
.channel-tags{display:flex;align-items:center;gap:8px;margin-left:auto;flex:0 0 auto;}

/* ---------- 移动抽屉 ---------- */
.drawer-backdrop{
  position:fixed;inset:0;background:rgba(11,44,42,.42);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s var(--ease);
}
.drawer-backdrop.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);z-index:95;
  background:var(--c-bg);border-left:1px solid var(--c-border);
  padding:20px;display:flex;flex-direction:column;gap:20px;overflow-y:auto;
  transform:translateX(100%);transition:transform .24s var(--ease);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--c-border);border-radius:10px;background:var(--c-surface);
  color:var(--c-primary);font-size:20px;line-height:1;cursor:pointer;display:grid;place-items:center;
}
.drawer-search{display:flex;align-items:center;gap:8px;background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-pill);padding:3px 3px 3px 16px;height:44px;}
.drawer-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:15px;font-family:inherit;color:var(--c-ink);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:10px;
  color:var(--c-ink-2);font-size:16px;background:var(--c-surface);border:1px solid var(--c-border);
}
.drawer-nav a.is-active{color:var(--c-primary);font-weight:700;border-color:var(--c-accent);background:var(--c-accent-soft);}

/* ---------- Hero ---------- */
.hero{padding:40px 0 0;}
.breadcrumb{font-size:14px;color:var(--c-ink-3);display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:22px;}
.breadcrumb a{color:var(--c-ink-2);}
.breadcrumb a:hover{color:var(--c-accent-hover);}
.breadcrumb .sep{color:var(--c-ink-3);opacity:.6;}
.hero-head{max-width:860px;}
.hero h1{font-size:var(--fs-h1);line-height:1.25;font-weight:700;margin:16px 0 18px;}
.hero-sub{font-size:18px;color:var(--c-ink-2);max-width:660px;margin:0;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-figure{
  position:relative;margin-top:44px;border-radius:var(--r-lg);overflow:hidden;
  aspect-ratio:21/9;background:var(--c-surface-2);box-shadow:var(--sh-2);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,21,20,0) 34%,rgba(14,21,20,.74) 100%);
}
.hero-figure-caption{
  position:absolute;left:32px;right:32px;bottom:26px;z-index:2;color:var(--c-inverse);
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
}
.hero-figure-caption strong{font-size:17px;font-weight:700;}
.hero-figure-caption span{font-size:14px;color:rgba(242,240,234,.82);}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-dark{background:var(--c-dark);color:var(--c-inverse);}
.section-dark h2,.section-dark h3{color:#FFFFFF;}
.section-alt{background:var(--c-surface-2);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-title{font-size:var(--fs-h2);line-height:1.3;font-weight:700;margin:0 0 14px;}
.section-desc{color:var(--c-ink-2);font-size:17px;margin:0;}
.section-dark .section-desc{color:rgba(242,240,234,.75);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-accent-hover);letter-spacing:.04em;
}
.section-dark .eyebrow{color:var(--c-accent);}

/* ---------- 时间线（分类页2 主版式） ---------- */
.timeline{list-style:none;position:relative;margin:0;padding:0;}
.timeline::before{
  content:"";position:absolute;left:27px;top:16px;bottom:24px;width:2px;
  background:rgba(47,167,155,.28);border-radius:2px;
}
.timeline-item{position:relative;padding-left:78px;margin-bottom:34px;}
.timeline-item:last-child{margin-bottom:0;}
.timeline-marker{
  position:absolute;left:0;top:0;width:56px;height:56px;border-radius:16px;
  background:var(--c-surface);border:1px solid var(--c-border);
  display:grid;place-items:center;box-shadow:var(--sh-1);z-index:2;
}
.timeline-item:nth-child(2) .timeline-marker{border-color:rgba(47,167,155,.5);}
.timeline-item:nth-child(3) .timeline-marker{border-color:rgba(224,138,60,.5);}
.timeline-item:nth-child(4) .timeline-marker{border-color:rgba(91,122,118,.5);}
.timeline-item:nth-child(5) .timeline-marker{border-color:rgba(162,96,60,.5);}
.step-num{font-size:19px;font-weight:700;color:var(--c-primary);letter-spacing:.02em;}
.timeline-body{
  display:grid;grid-template-columns:1.15fr .85fr;
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.timeline-body:hover{box-shadow:var(--sh-2);border-color:rgba(47,167,155,.45);transform:translateY(-2px);}
.timeline-item:nth-child(even) .step-figure{order:-1;}
.step-content{padding:32px;display:flex;flex-direction:column;gap:12px;}
.step-content h3{font-size:var(--fs-h3);line-height:1.45;font-weight:600;margin:0;}
.step-content p{color:var(--c-ink-2);font-size:16px;margin:0;}
.step-figure{position:relative;min-height:250px;background:var(--c-surface-2);}
.step-figure img{width:100%;height:100%;object-fit:cover;}
.figure-tag{
  position:absolute;left:16px;bottom:16px;z-index:2;
  background:rgba(14,21,20,.72);color:var(--c-inverse);
  font-size:12.5px;padding:4px 12px;border-radius:var(--r-pill);
}
.check-list{list-style:none;display:grid;gap:9px;margin:4px 0 0;}
.check-list li{position:relative;padding-left:26px;font-size:15.5px;color:var(--c-ink-2);}
.check-list li::before{
  content:"";position:absolute;left:1px;top:.62em;width:12px;height:7px;
  border-left:2px solid var(--c-accent);border-bottom:2px solid var(--c-accent);
  transform:rotate(-45deg);
}
.check-list--warn li::before{
  border:0;width:14px;height:14px;top:.48em;left:0;border-radius:50%;
  background:var(--c-amber-soft);box-shadow:inset 0 0 0 2px var(--c-amber);
  transform:none;
}

/* ---------- 非对称栅格 ---------- */
.grid-asym{display:grid;grid-template-columns:7fr 5fr;gap:34px;align-items:start;}
.panel{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:32px;box-shadow:var(--sh-1);
}
.panel + .panel{margin-top:24px;}
.panel h3{font-size:var(--fs-h3);margin:0 0 14px;}
.panel p{color:var(--c-ink-2);}
.num-list{list-style:none;display:grid;gap:2px;margin-top:18px;}
.num-list li{
  display:grid;grid-template-columns:44px 1fr;gap:16px;align-items:start;
  padding:16px 0;border-top:1px dashed var(--c-border);
}
.num-list li:first-child{border-top:0;padding-top:4px;}
.num-list .idx{
  font-size:14px;font-weight:700;color:var(--c-accent-hover);
  padding-top:3px;letter-spacing:.06em;
}
.num-list strong{display:block;font-size:16.5px;margin-bottom:4px;}
.num-list span{color:var(--c-ink-2);font-size:15.5px;}
.sticky-card{
  position:sticky;top:132px;
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-2);
}
.sticky-card h3{font-size:20px;margin:14px 0 10px;}
.sticky-card p{color:var(--c-ink-2);font-size:15.5px;}
.sticky-card .btn{margin-top:18px;}
.card-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-ink-3);}
.divider{height:1px;background:var(--c-border);border:0;margin:24px 0;}

/* ---------- 数据带 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;}
.stat-item{border-left:2px solid rgba(47,167,155,.5);padding-left:18px;}
.stat-value{font-size:36px;font-weight:700;color:#FFFFFF;line-height:1.2;letter-spacing:-.01em;}
.stat-value small{font-size:16px;font-weight:600;margin-left:4px;color:rgba(242,240,234,.75);}
.stat-label{font-size:13.5px;color:rgba(242,240,234,.7);margin-top:6px;display:block;}
.dark-note{
  margin-top:44px;padding-top:28px;border-top:1px solid var(--c-border-dark);
  color:rgba(242,240,234,.78);font-size:15.5px;max-width:880px;
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--c-border);}
.faq-item{border-bottom:1px solid var(--c-border);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:18px;min-height:60px;padding:20px 4px;font-size:17px;font-weight:600;color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary-light);}
.faq-icon{
  flex:0 0 auto;width:30px;height:30px;border-radius:50%;
  border:1px solid var(--c-border);display:grid;place-items:center;color:var(--c-ink-2);
  transition:transform .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.faq-item[open] .faq-icon{transform:rotate(180deg);background:var(--c-accent-soft);border-color:var(--c-accent);color:var(--c-primary);}
.faq-answer{padding:0 4px 24px;color:var(--c-ink-2);font-size:16px;max-width:860px;}

/* ---------- 表单 ---------- */
.form-card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:34px;box-shadow:var(--sh-2);
}
.field-label{display:block;font-size:14px;font-weight:600;color:var(--c-ink-2);margin-bottom:10px;}
.field-row{display:flex;gap:12px;flex-wrap:wrap;}
.field-input{
  flex:1 1 240px;min-width:0;height:48px;padding:0 16px;
  border:1px solid var(--c-border);border-radius:10px;background:var(--c-bg);
  font-size:16px;font-family:inherit;color:var(--c-ink);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease);
}
.field-input::placeholder{color:var(--c-ink-3);}
.field-input:focus{outline:none;border-color:var(--c-accent);background:var(--c-surface);box-shadow:0 0 0 3px rgba(47,167,155,.16);}
.field-input.has-error{border-color:var(--c-error);}
.field-hint{margin-top:12px;font-size:13.5px;color:var(--c-ink-3);}
.field-error{margin-top:8px;font-size:13px;color:var(--c-error);}
.field-success{margin-top:8px;font-size:13px;color:var(--c-success);}

/* ---------- 尾部 CTA 窄带 ---------- */
.cta-band{background:var(--c-dark-2);color:var(--c-inverse);}
.cta-band-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding:34px 0;
}
.cta-band-inner p{margin:0;font-size:19px;font-weight:600;color:#FFFFFF;}
.cta-band-inner span{display:block;font-size:14px;font-weight:400;color:rgba(242,240,234,.7);margin-top:6px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-dark);color:var(--c-inverse);padding:72px 0 0;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--c-accent);color:#06201E;}
.footer-brand .brand-text{color:#FFFFFF;font-size:18px;font-weight:700;}
.footer-desc{color:rgba(242,240,234,.68);font-size:14.5px;max-width:280px;}
.footer-col h4{font-size:15px;color:#FFFFFF;margin:0 0 18px;font-weight:600;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a,.footer-contact span{
  color:rgba(242,240,234,.7);font-size:14.5px;
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-links a:hover{color:var(--c-accent);transform:translateX(2px);}
.footer-contact{display:flex;flex-direction:column;gap:11px;}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--c-border-dark);
  padding:22px 0 26px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(242,240,234,.6);
}
.to-top{
  display:inline-flex;align-items:center;gap:6px;color:rgba(242,240,234,.72);font-size:13.5px;
}
.to-top:hover{color:var(--c-accent);}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:flex;align-items:center;gap:8px;
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-pill);
  padding:8px;box-shadow:var(--sh-3);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta.is-closed{display:none;}
.float-top{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--c-border);color:var(--c-primary);background:var(--c-bg);
}
.float-top:hover{border-color:var(--c-accent);color:var(--c-accent-hover);}
.float-close{
  width:32px;height:32px;border-radius:50%;border:0;background:transparent;
  color:var(--c-ink-3);font-size:18px;line-height:1;cursor:pointer;
}
.float-close:hover{color:var(--c-primary);}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 24px;}
  .search-box{max-width:280px;}
  .channel-tags{display:none;}
  .grid-asym{grid-template-columns:1fr;gap:24px;}
  .sticky-card{position:static;}
  .timeline-body{grid-template-columns:1fr;}
  .timeline-item:nth-child(even) .step-figure{order:0;}
  .step-figure{min-height:220px;aspect-ratio:16/9;}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .section{padding:64px 0;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.75;}
  .container{padding:0 16px;}
  .search-box{display:none;}
  .header-actions .btn{display:none;}
  .menu-toggle{display:grid;}
  .channel-inner{height:46px;gap:8px;}
  .channel-link{padding:0 12px;font-size:14.5px;}
  .hero{padding:28px 0 0;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 46%;}
  .hero-figure{aspect-ratio:16/10;margin-top:30px;}
  .hero-figure-caption{left:18px;right:18px;bottom:16px;}
  .hero-figure-caption strong{font-size:15.5px;}
  .hero-figure-caption span{font-size:13px;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .section-head{margin-bottom:30px;}
  .timeline::before{display:none;}
  .timeline-item{padding-left:0;margin-bottom:26px;}
  .timeline-marker{position:static;width:48px;height:48px;border-radius:14px;margin-bottom:14px;}
  .step-content{padding:22px;}
  .step-figure{min-height:180px;}
  .panel{padding:22px;}
  .sticky-card{padding:22px;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:20px;}
  .stat-value{font-size:28px;}
  .cta-band-inner{padding:28px 0;}
  .cta-band-inner p{font-size:17px;}
  .cta-band-inner .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .site-footer{padding:56px 0 0;margin-top:64px;}
  .footer-bottom{padding-bottom:80px;}
  .float-cta{left:12px;right:12px;bottom:12px;border-radius:14px;padding:8px;justify-content:space-between;}
  .float-cta .btn{flex:1;margin-right:8px;}
}
@media (max-width:479px){
  .hero h1{line-height:1.3;}
  .num-list li{grid-template-columns:36px 1fr;gap:12px;}
  .stat-grid{grid-template-columns:1fr;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category3 */
:root{
  --jade-900:#0B2C2A;
  --jade-800:#0F3B38;
  --jade-700:#14544F;
  --jade-600:#1E6E67;
  --celadon:#2FA79B;
  --celadon-hover:#248C82;
  --celadon-soft:#E4F2F0;
  --amber:#E08A3C;
  --amber-hover:#C9762C;
  --amber-soft:#FBEDE0;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#EFEBE3;
  --dark:#0E1514;
  --dark-2:#16201F;
  --line:#E2DDD4;
  --line-dark:#2A3735;
  --ink:#141A19;
  --ink-2:#4C5755;
  --ink-3:#7C8785;
  --ink-inv:#F2F0EA;
  --ok:#3E8E5A;
  --warn:#C98A1E;
  --err:#C0503F;
  --info:#2F7FA7;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,59,56,.05);
  --sh-2:0 6px 20px rgba(15,59,56,.08);
  --sh-3:0 18px 44px rgba(15,59,56,.12);
  --sp-1:4px;
  --sp-2:8px;
  --sp-3:12px;
  --sp-4:16px;
  --sp-5:24px;
  --sp-6:32px;
  --sp-7:48px;
  --sp-8:64px;
  --sp-9:96px;
  --font-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","Helvetica Neue",Arial,sans-serif;
  --ease:ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-0.01em;color:var(--ink);}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;list-style:none;}
input{font-family:inherit;}
::selection{background:var(--celadon-soft);color:var(--jade-800);}
:focus-visible{outline:2px solid var(--celadon);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 16px;}
@media (min-width:768px){.container{padding:0 24px;}}
@media (min-width:1024px){.container{padding:0 32px;}}

/* ============ 顶部品牌行 ============ */
.site-header{position:sticky;top:0;z-index:80;background:var(--bg);border-bottom:1px solid var(--line);transition:box-shadow .2s var(--ease),background .2s var(--ease);}
.site-header.is-stuck{background:rgba(247,245,240,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:var(--sh-2);}
.brand-bar{display:flex;align-items:center;gap:var(--sp-4);min-height:62px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--jade-700),var(--jade-900));
  color:var(--ink-inv);font-size:16px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-1);
}
.brand-text{font-size:19px;font-weight:700;color:var(--jade-800);letter-spacing:0.01em;white-space:nowrap;}
.brand-sub{display:none;font-size:12px;color:var(--ink-3);line-height:1.3;}
@media (min-width:1024px){.brand-sub{display:block;}}

.header-search{display:none;flex:1 1 auto;max-width:420px;margin-left:auto;position:relative;}
.header-search input{
  width:100%;height:40px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);
  padding:0 46px 0 18px;font-size:14px;color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.header-search input::placeholder{color:var(--ink-3);}
.header-search input:focus{outline:none;border-color:var(--celadon);box-shadow:0 0 0 3px var(--celadon-soft);}
.header-search .search-btn{
  position:absolute;right:4px;top:4px;width:32px;height:32px;border-radius:50%;
  border:0;background:var(--jade-800);color:var(--ink-inv);cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:background .2s var(--ease);
}
.header-search .search-btn:hover{background:var(--celadon-hover);}
@media (min-width:1024px){.header-search{display:block;}}

.header-actions{display:flex;align-items:center;gap:var(--sp-3);margin-left:auto;}
@media (min-width:1024px){.header-actions{margin-left:0;}}
.quick-link{display:none;font-size:14px;color:var(--ink-2);transition:color .2s var(--ease);}
.quick-link:hover{color:var(--celadon-hover);}
@media (min-width:1024px){.quick-link{display:inline-flex;align-items:center;gap:6px;}}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:10px;border:1px solid transparent;cursor:pointer;
  font-size:15px;font-weight:600;line-height:1;
  padding:0 20px;height:42px;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{background:var(--amber);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--amber-hover);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);background:var(--amber-hover);}
.btn-outline{background:transparent;color:var(--jade-800);border-color:var(--jade-800);}
.btn-outline:hover{background:var(--celadon-soft);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--jade-700);padding:0;height:auto;font-weight:600;}
.btn-ghost .arrow{transition:transform .2s var(--ease);}
.btn-ghost:hover .arrow{transform:translateX(3px);}
.btn-sm{height:32px;font-size:13px;padding:0 14px;border-radius:var(--r-sm);}
.btn-lg{height:50px;font-size:16px;padding:0 26px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.4;pointer-events:none;}

.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);color:var(--jade-800);cursor:pointer;
}
@media (min-width:1024px){.menu-toggle{display:none;}}

/* ============ 频道条 ============ */
.channel-bar{border-top:1px solid var(--line);background:var(--bg);}
.channel-nav{
  display:flex;align-items:center;gap:var(--sp-5);
  min-height:46px;overflow-x:auto;scrollbar-width:none;
}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-link{
  position:relative;flex:0 0 auto;
  font-size:15px;color:var(--ink-2);padding:12px 2px;
  transition:color .2s var(--ease);white-space:nowrap;
}
.channel-link:hover{color:var(--celadon-hover);}
.channel-link.is-active{color:var(--jade-800);font-weight:600;}
.channel-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;
  background:var(--celadon);border-radius:2px;
}
.channel-tags{display:none;gap:var(--sp-2);margin-left:auto;flex:0 0 auto;}
@media (min-width:1280px){.channel-tags{display:flex;}}
.tag-pill{
  font-size:12px;line-height:20px;padding:3px 12px;border-radius:var(--r-pill);
  border:1px solid var(--line);color:var(--ink-2);background:var(--surface);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.tag-pill:hover{border-color:var(--celadon);color:var(--celadon-hover);}

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,21,20,.5);opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);
  background:var(--surface);z-index:95;transform:translateX(102%);
  transition:transform .26s var(--ease);display:flex;flex-direction:column;
  box-shadow:var(--sh-3);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;border-bottom:1px solid var(--line);}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--surface);cursor:pointer;color:var(--jade-800);}
.drawer-body{padding:18px;overflow-y:auto;display:flex;flex-direction:column;gap:var(--sp-5);}
.drawer-search{position:relative;}
.drawer-search input{width:100%;height:44px;border-radius:10px;border:1px solid var(--line);padding:0 14px;font-size:15px;background:var(--surface);}
.drawer-search input:focus{outline:none;border-color:var(--celadon);box-shadow:0 0 0 3px var(--celadon-soft);}
.drawer-list{display:flex;flex-direction:column;}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;min-height:44px;font-size:15px;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.drawer-list a.is-active{color:var(--jade-800);font-weight:600;}
.drawer-list a:hover{color:var(--celadon-hover);}

/* ============ 面包屑 ============ */
.crumb-wrap{padding:var(--sp-5) 0 var(--sp-3);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);}
.crumb a{color:var(--ink-2);transition:color .2s var(--ease);}
.crumb a:hover{color:var(--celadon-hover);}
.crumb .sep{color:var(--line);}
.crumb .current{color:var(--jade-800);font-weight:600;}

/* ============ 分类 Hero ============ */
.cat-hero{padding-bottom:var(--sp-7);}
.cat-hero-top{display:grid;grid-template-columns:1fr;gap:var(--sp-5);}
@media (min-width:1024px){
  .cat-hero-top{grid-template-columns:minmax(0,7fr) minmax(0,5fr);align-items:end;gap:var(--sp-7);}
}
.cat-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--celadon-hover);font-weight:600;letter-spacing:.04em;
  background:var(--celadon-soft);border-radius:var(--r-pill);padding:5px 14px;margin-bottom:var(--sp-4);
}
.cat-hero h1{font-size:30px;line-height:1.25;font-weight:700;margin-bottom:var(--sp-4);}
@media (min-width:768px){.cat-hero h1{font-size:38px;}}
@media (min-width:1024px){.cat-hero h1{font-size:44px;}}
.cat-lead{font-size:16px;color:var(--ink-2);max-width:620px;margin:0;}
@media (min-width:1024px){.cat-lead{font-size:17px;}}
.cat-side-note{
  border-left:3px solid var(--celadon);padding:6px 0 6px 16px;
  font-size:14px;color:var(--ink-2);line-height:1.7;
}
.cat-hero-media{
  margin-top:var(--sp-6);position:relative;border-radius:var(--r-lg);overflow:hidden;
  aspect-ratio:21/9;background:var(--surface-2);box-shadow:var(--sh-2);
}
@media (max-width:767px){.cat-hero-media{aspect-ratio:16/10;}}
.cat-hero-media img{width:100%;height:100%;object-fit:cover;}
.cat-hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,44,42,.05) 0%,rgba(11,44,42,.62) 100%);
}
.cat-hero-caption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:20px 24px;color:var(--ink-inv);
}
.cat-hero-caption strong{display:block;font-size:18px;font-weight:700;margin-bottom:4px;}
.cat-hero-caption span{font-size:13px;opacity:.86;}

/* ============ 筛选标签条 ============ */
.filter-bar{
  display:flex;align-items:center;gap:var(--sp-2);flex-wrap:nowrap;
  overflow-x:auto;scrollbar-width:none;
  padding:var(--sp-3) 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  margin-bottom:var(--sp-7);
}
.filter-bar::-webkit-scrollbar{display:none;}
.filter-label{font-size:13px;color:var(--ink-3);flex:0 0 auto;margin-right:4px;}
.filter-chip{
  flex:0 0 auto;font-size:14px;line-height:1;
  padding:9px 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);color:var(--ink-2);
  cursor:pointer;transition:all .18s var(--ease);
}
.filter-chip:hover{border-color:var(--celadon);color:var(--celadon-hover);}
.filter-chip.is-on{background:var(--jade-800);border-color:var(--jade-800);color:var(--ink-inv);}

/* ============ 通用板块 ============ */
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:88px 0;}}
.section-head{max-width:720px;margin-bottom:var(--sp-6);}
.section-head h2{font-size:26px;font-weight:700;margin-bottom:var(--sp-3);}
@media (min-width:768px){.section-head h2{font-size:32px;}}
.section-head p{color:var(--ink-2);font-size:16px;margin:0;}
.section-dark{background:var(--dark);color:var(--ink-inv);}
.section-dark h2,.section-dark h3{color:var(--ink-inv);}
.section-dark p{color:rgba(242,240,234,.78);}

/* ============ 卡片矩阵（2 列不规则） ============ */
.matrix{display:grid;grid-template-columns:1fr;gap:var(--sp-5);align-items:start;}
@media (min-width:768px){.matrix{grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--sp-6);}}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-3px);border-color:var(--celadon);box-shadow:var(--sh-3);}
.card-body{padding:22px;}
.card-body h3{font-size:19px;font-weight:600;margin-bottom:10px;line-height:1.45;}
.card-body p{font-size:15px;color:var(--ink-2);margin:0;}
.card-media{aspect-ratio:16/10;background:var(--surface-2);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-list{margin-top:14px;display:flex;flex-direction:column;gap:9px;}
.card-list li{position:relative;padding-left:20px;font-size:14px;color:var(--ink-2);line-height:1.7;}
.card-list li::before{
  content:"";position:absolute;left:2px;top:9px;width:7px;height:7px;border-radius:50%;
  background:var(--celadon);
}
.card-foot{margin-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:22px;padding:0 11px;border-radius:var(--r-pill);
  font-weight:600;letter-spacing:.02em;
}
.badge-jade{background:var(--celadon-soft);color:var(--celadon-hover);}
.badge-amber{background:var(--amber-soft);color:#A2591B;}
.badge-slate{background:#E7EDEC;color:#3F5B58;}
.badge-ochre{background:#F3E4DA;color:#8A4E2E;}
.meta-time{font-size:13px;color:var(--ink-3);font-family:var(--font-num);}
.card-wide{grid-column:1/-1;}
@media (min-width:768px){.card-wide .card-inner{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);}}
.card-wide .card-media{height:100%;aspect-ratio:auto;min-height:200px;}
.card-inner{display:block;}

/* ============ 非对称栅格 ============ */
.asym{display:grid;grid-template-columns:1fr;gap:var(--sp-6);}
@media (min-width:1024px){
  .asym{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:var(--sp-8);}
}
.asym-flip{align-items:start;}
@media (min-width:1024px){
  .asym-flip .asym-media{order:-1;}
}
.asym-media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);background:var(--surface-2);}
.asym-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.asym-media figcaption{font-size:13px;color:var(--ink-3);padding:12px 4px 0;text-align:center;}
.numlist{display:flex;flex-direction:column;gap:var(--sp-5);margin-top:var(--sp-5);}
.numlist li{display:grid;grid-template-columns:56px minmax(0,1fr);gap:16px;align-items:start;}
.num{
  font-family:var(--font-num);font-size:26px;font-weight:700;color:var(--celadon);
  line-height:1;padding-top:2px;
}
.numlist h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.numlist p{font-size:14.5px;color:var(--ink-2);margin:0;line-height:1.75;}

/* 侧边要点卡 */
.sticky-card{
  position:sticky;top:110px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-2);
}
.sticky-card h3{font-size:18px;font-weight:600;margin-bottom:6px;}
.sticky-card .sub{font-size:13px;color:var(--ink-3);margin-bottom:16px;}
.checklist{display:flex;flex-direction:column;gap:12px;margin-bottom:20px;}
.checklist li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.7;}
.checklist .tick{
  flex:0 0 auto;width:18px;height:18px;border-radius:50%;background:var(--celadon-soft);
  color:var(--celadon-hover);display:flex;align-items:center;justify-content:center;margin-top:4px;
}
.checklist .tick svg{width:11px;height:11px;}
.sticky-divider{height:1px;background:var(--line);margin:20px 0;}
.sticky-card .hint{font-size:13px;color:var(--ink-3);margin:0 0 14px;}

/* ============ 深色数据带 ============ */
.stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--sp-5);}
@media (min-width:1024px){.stats{grid-template-columns:repeat(4,minmax(0,1fr));}}
.stat{padding:20px 0;border-top:1px solid var(--line-dark);}
.stat .value{font-family:var(--font-num);font-size:30px;font-weight:700;color:var(--ink-inv);letter-spacing:-.01em;}
.stat .label{font-size:13px;color:rgba(242,240,234,.7);margin-top:6px;}

/* ============ 步骤流程 ============ */
.steps{display:grid;grid-template-columns:1fr;gap:var(--sp-5);margin-top:var(--sp-6);}
@media (min-width:768px){.steps{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.steps{grid-template-columns:repeat(4,minmax(0,1fr));}}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--sh-1);transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.step:hover{border-color:var(--celadon);transform:translateY(-2px);}
.step .idx{
  font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--amber);
  letter-spacing:.08em;margin-bottom:12px;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.step p{font-size:14px;color:var(--ink-2);margin:0;line-height:1.75;}

/* ============ FAQ ============ */
.faq{max-width:860px;margin:0 auto;border-top:1px solid var(--line);}
.faq details{border-bottom:1px solid var(--line);}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 4px;min-height:56px;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{color:var(--celadon-hover);}
.faq .chev{flex:0 0 auto;width:20px;height:20px;color:var(--ink-3);transition:transform .2s var(--ease),color .2s var(--ease);}
.faq details[open] .chev{transform:rotate(180deg);color:var(--celadon);}
.faq .answer{padding:0 4px 22px;font-size:15px;color:var(--ink-2);line-height:1.85;}
.faq .answer p:last-child{margin-bottom:0;}

/* ============ CTA 窄带 ============ */
.cta-band{background:var(--dark-2);border-radius:var(--r-lg);padding:32px 24px;margin:0 0 96px;}
@media (min-width:768px){.cta-band{padding:40px 44px;}}
.cta-inner{display:flex;flex-direction:column;gap:var(--sp-4);align-items:flex-start;}
@media (min-width:1024px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between;}}
.cta-inner h2{font-size:22px;font-weight:700;color:var(--ink-inv);margin:0;}
.cta-inner p{margin:6px 0 0;font-size:14px;color:rgba(242,240,234,.72);}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto;}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(242,240,234,.7);padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:var(--sp-6);padding-bottom:var(--sp-7);}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:var(--sp-7);}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{background:linear-gradient(140deg,var(--celadon),var(--jade-700));}
.footer-brand .brand-text{color:var(--ink-inv);font-size:18px;font-weight:700;}
.footer-desc{font-size:14px;line-height:1.8;margin:0;max-width:330px;color:rgba(242,240,234,.66);}
.footer-col h4{font-size:15px;color:var(--ink-inv);margin-bottom:16px;font-weight:600;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:rgba(242,240,234,.7);transition:color .2s var(--ease);border-bottom:1px solid transparent;padding-bottom:1px;}
.footer-links a:hover{color:var(--celadon);border-bottom-color:var(--celadon);}
.footer-contact{display:flex;flex-direction:column;gap:11px;font-size:14px;color:rgba(242,240,234,.7);line-height:1.7;}
.footer-bottom{
  border-top:1px solid var(--line-dark);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;font-size:13px;
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:rgba(242,240,234,.8);transition:color .2s var(--ease);}
.to-top:hover{color:var(--celadon);}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:none;align-items:center;gap:12px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:8px 10px 8px 18px;box-shadow:var(--sh-3);
  opacity:0;transform:translateY(10px);transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.float-cta.is-show{opacity:1;transform:translateY(0);}
@media (min-width:1024px){.float-cta{display:flex;}}
.float-cta span{font-size:14px;color:var(--ink-2);white-space:nowrap;}
.float-cta .close-x{
  width:26px;height:26px;border-radius:50%;border:1px solid var(--line);background:var(--surface);
  color:var(--ink-3);cursor:pointer;line-height:1;display:flex;align-items:center;justify-content:center;
}
.float-cta .close-x:hover{color:var(--jade-800);border-color:var(--celadon);}
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(247,245,240,.96);backdrop-filter:blur(8px);
  border-top:1px solid var(--line);padding:8px 12px;
  display:flex;align-items:center;gap:10px;
}
@media (min-width:1024px){.mobile-bar{display:none;}}
.mobile-bar .btn{flex:1 1 auto;}
.mobile-bar .close-x{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--surface);
  color:var(--ink-3);cursor:pointer;flex:0 0 auto;
}
body{padding-bottom:64px;}
@media (min-width:1024px){body{padding-bottom:0;}}

/* 进场动画 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation:none !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --c-primary:#0F3B38;
  --c-primary-dark:#0B2C2A;
  --c-primary-light:#14544F;
  --c-primary-lighter:#1E6E67;
  --c-accent:#2FA79B;
  --c-accent-hover:#248C82;
  --c-accent-soft:#E4F2F0;
  --c-amber:#E08A3C;
  --c-amber-hover:#C9762C;
  --c-amber-soft:#FBEDE0;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#EFEBE3;
  --dark:#0E1514;
  --dark-2:#16201F;
  --text:#141A19;
  --text-2:#4C5755;
  --text-3:#7C8785;
  --text-inv:#F2F0EA;
  --border:#E2DDD4;
  --border-dark:#2A3735;
  --ok:#3E8E5A;
  --warn:#C98A1E;
  --err:#C0503F;
  --info:#2F7FA7;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,59,56,.05);
  --sh-2:0 6px 20px rgba(15,59,56,.08);
  --sh-3:0 18px 44px rgba(15,59,56,.12);
  --container:1240px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:200ms;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:120px;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  font-weight:400;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-md);}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.3;}
p{margin:0 0 1.2em;}
ul,ol{margin:0 0 1.2em;padding-left:1.2em;}
li{margin-bottom:.5em;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

/* ============ 头部 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,240,.92);
  backdrop-filter:saturate(160%) blur(10px);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--border);
  transition:box-shadow var(--t) var(--ease),background var(--t) var(--ease);
}
.site-header.is-stuck{box-shadow:var(--sh-2);background:rgba(247,245,240,.96);}
.header-main{height:64px;display:flex;align-items:center;}
.header-main-inner{display:flex;align-items:center;gap:24px;width:100%;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(140deg,var(--c-primary-light),var(--c-primary));
  color:var(--text-inv);font-size:15px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-1);
}
.brand-text{font-size:18px;font-weight:700;color:var(--c-primary);letter-spacing:0;}
.header-search{
  flex:1 1 auto;max-width:420px;display:flex;align-items:center;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r-pill);padding:3px 3px 3px 16px;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.header-search:focus-within{border-color:var(--c-accent);box-shadow:0 0 0 3px var(--c-accent-soft);}
.header-search input{
  flex:1;border:0;background:transparent;height:34px;font-size:14px;outline:none;min-width:0;
}
.header-search input::placeholder{color:var(--text-3);}
.header-search button{
  width:34px;height:34px;border:0;border-radius:var(--r-pill);cursor:pointer;
  background:var(--c-primary);color:var(--text-inv);
  display:flex;align-items:center;justify-content:center;
  transition:background var(--t) var(--ease),transform var(--t) var(--ease);
}
.header-search button:hover{background:var(--c-primary-lighter);}
.header-search button:active{transform:scale(.95);}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto;flex-shrink:0;}
.ghost-link{font-size:14.5px;color:var(--text-2);transition:color var(--t) var(--ease);}
.ghost-link:hover{color:var(--c-accent-hover);}
.drawer-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--border);border-radius:var(--r-md);
  background:var(--surface);cursor:pointer;align-items:center;justify-content:center;
  transition:border-color var(--t) var(--ease),background var(--t) var(--ease);
}
.drawer-toggle:hover{border-color:var(--c-accent);background:var(--c-accent-soft);}
.header-channels{border-top:1px solid var(--border);background:rgba(239,235,227,.55);}
.channels-inner{display:flex;align-items:center;gap:20px;height:48px;}
.channel-nav{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;flex:1 1 auto;}
.channel-nav::-webkit-scrollbar{display:none;}
.channel-link{
  position:relative;white-space:nowrap;padding:8px 12px;border-radius:var(--r-sm);
  font-size:14.5px;color:var(--text-2);transition:color var(--t) var(--ease),background var(--t) var(--ease);
}
.channel-link:hover{color:var(--c-primary);background:var(--surface);}
.channel-link.is-active{color:var(--c-primary);font-weight:600;}
.channel-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--c-accent);
}
.trend-tags{display:flex;align-items:center;gap:8px;flex-shrink:0;}
.trend-tag{
  font-size:12.5px;line-height:22px;padding:0 12px;border-radius:var(--r-pill);
  border:1px solid var(--border);color:var(--text-2);background:var(--surface);
  transition:border-color var(--t) var(--ease),color var(--t) var(--ease);
}
.trend-tag:hover{border-color:var(--c-accent);color:var(--c-accent-hover);}

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,21,20,.5);opacity:0;visibility:hidden;
  transition:opacity var(--t) var(--ease),visibility var(--t) var(--ease);z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);background:var(--surface);
  z-index:100;transform:translateX(100%);transition:transform 240ms var(--ease);
  padding:20px;overflow-y:auto;box-shadow:var(--sh-3);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:38px;height:38px;border-radius:var(--r-sm);border:1px solid var(--border);background:var(--surface);
  cursor:pointer;display:flex;align-items:center;justify-content:center;
}
.drawer-search{display:flex;gap:8px;margin-bottom:18px;}
.drawer-search input{
  flex:1;height:44px;border:1px solid var(--border);border-radius:10px;padding:0 14px;outline:none;
}
.drawer-search input:focus{border-color:var(--c-accent);box-shadow:0 0 0 3px var(--c-accent-soft);}
.drawer-list{display:flex;flex-direction:column;gap:2px;margin-bottom:20px;}
.drawer-list a{
  display:flex;align-items:center;min-height:46px;padding:0 12px;border-radius:var(--r-sm);
  font-size:15px;color:var(--text-2);
}
.drawer-list a:hover{background:var(--c-accent-soft);color:var(--c-primary);}
.drawer-list a.is-active{background:var(--c-accent-soft);color:var(--c-primary);font-weight:600;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:10px;cursor:pointer;
  font-weight:600;font-size:15px;line-height:1;padding:0 20px;height:44px;
  transition:transform var(--t) var(--ease),background var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease),color var(--t) var(--ease);
}
.btn-sm{height:36px;font-size:14px;padding:0 16px;border-radius:9px;}
.btn-lg{height:50px;font-size:16px;padding:0 26px;}
.btn-primary{background:var(--c-amber);color:#fff;box-shadow:var(--sh-2);}
.btn-primary:hover{background:var(--c-amber-hover);transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-outline{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-outline:hover{background:var(--c-accent-soft);border-color:var(--c-primary-lighter);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--c-primary);padding:0 8px;height:40px;}
.btn-ghost svg{transition:transform var(--t) var(--ease);}
.btn-ghost:hover{color:var(--c-amber-hover);}
.btn-ghost:hover svg{transform:translateX(3px);}
.btn-light{background:var(--surface);color:var(--c-primary);border-color:var(--border);}
.btn-light:hover{border-color:var(--c-accent);background:var(--c-accent-soft);}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 11px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;line-height:1;
}
.badge-teal{background:var(--c-accent-soft);color:var(--c-accent-hover);}
.badge-amber{background:var(--c-amber-soft);color:var(--c-amber-hover);}
.badge-grey{background:#E8ECEB;color:#4C605D;}
.badge-ochre{background:#F6E7DD;color:#A2603C;}
.badge-dark{background:rgba(47,167,155,.16);color:#7FD8CE;}

/* ============ 通用区块 ============ */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-dark{background:var(--dark);color:var(--text-inv);}
.section-alt{background:var(--surface-2);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:32px;}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16.5px;}
.section-dark .section-head h2{color:var(--text-inv);}
.section-dark .section-head p{color:rgba(242,240,234,.72);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  letter-spacing:.06em;color:var(--c-accent-hover);margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--c-amber);}

/* ============ 面包屑 ============ */
.crumbs{padding:22px 0 0;}
.crumbs ol{
  list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin:0;padding:0;font-size:13.5px;color:var(--text-3);
}
.crumbs li{margin:0;display:flex;align-items:center;gap:8px;}
.crumbs a{color:var(--text-2);transition:color var(--t) var(--ease);}
.crumbs a:hover{color:var(--c-accent-hover);}
.crumbs .sep{color:#C6C0B5;}

/* ============ Hero ============ */
.cat-hero{padding:26px 0 0;}
.cat-hero-head{display:grid;grid-template-columns:1.55fr 1fr;gap:44px;align-items:end;margin-bottom:32px;}
.cat-hero h1{font-size:44px;line-height:1.25;}
.cat-hero .lede{margin-top:16px;font-size:17.5px;color:var(--text-2);max-width:620px;}
.hero-side{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:22px 24px;box-shadow:var(--sh-1);
}
.hero-side h3{font-size:16px;margin-bottom:10px;}
.hero-side ul{list-style:none;padding:0;margin:0;}
.hero-side li{
  display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--text-2);
  margin:0;padding:7px 0;border-bottom:1px dashed var(--border);
}
.hero-side li:last-child{border-bottom:0;}
.hero-side li svg{flex-shrink:0;margin-top:5px;color:var(--c-accent);}
.hero-banner{
  position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);
  aspect-ratio:21/9;background:var(--c-primary-dark);
}
.hero-banner img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.hero-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,44,42,.86) 0%,rgba(11,44,42,.5) 48%,rgba(11,44,42,.12) 100%);
}
.hero-banner-text{position:absolute;left:0;bottom:0;z-index:2;padding:36px 40px;max-width:640px;}
.hero-banner-text h2{color:var(--text-inv);font-size:24px;}
.hero-banner-text p{color:rgba(242,240,234,.8);font-size:15px;margin:10px 0 0;}

/* ============ 数据带 ============ */
.stat-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;margin-top:36px;
}
.stat-item{padding:26px 24px;border-right:1px solid var(--border);}
.stat-item:last-child{border-right:0;}
.stat-num{
  font-size:34px;font-weight:700;color:var(--c-primary);line-height:1.15;
  font-family:Inter,"PingFang SC",system-ui,sans-serif;letter-spacing:-.02em;
}
.stat-num small{font-size:15px;font-weight:600;margin-left:2px;color:var(--c-accent-hover);}
.stat-label{font-size:13px;color:var(--text-3);margin-top:6px;line-height:1.5;}

/* ============ 对比表格 ============ */
.table-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;}
table.compare{border-collapse:collapse;width:100%;min-width:760px;font-size:15px;}
table.compare caption{
  text-align:left;padding:22px 26px 0;font-size:15px;color:var(--text-3);
}
table.compare th,table.compare td{padding:16px 22px;text-align:left;vertical-align:top;}
table.compare thead th{
  background:var(--c-primary);color:var(--text-inv);font-size:14px;font-weight:600;
  letter-spacing:.02em;white-space:nowrap;
}
table.compare tbody tr:nth-child(odd){background:#FCFBF9;}
table.compare tbody tr:nth-child(even){background:var(--surface-2);}
table.compare tbody td{border-bottom:1px solid var(--border);color:var(--text-2);line-height:1.7;}
table.compare tbody tr:last-child td{border-bottom:0;}
table.compare td .cell-strong{display:block;color:var(--text);font-weight:600;margin-bottom:2px;}
.table-foot{
  padding:16px 22px;background:#FCFBF9;border-top:1px solid var(--border);
  font-size:13.5px;color:var(--text-3);
}
.risk-tag{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1;
}
.risk-low{background:#E6F1E9;color:#2F6E45;}
.risk-mid{background:#FAF0DC;color:#8C6413;}
.risk-high{background:#F8E3DF;color:#A43F30;}

/* ============ 非对称核对区 ============ */
.check-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
.check-visual{
  position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);
  aspect-ratio:4/3;order:2;
}
.check-visual img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.check-visual figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:16px 20px;font-size:13px;
  color:rgba(242,240,234,.86);background:linear-gradient(0deg,rgba(11,44,42,.9),rgba(11,44,42,0));
}
.check-list{list-style:none;padding:0;margin:0;}
.check-item{
  display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--border);
}
.check-item:first-child{padding-top:0;}
.check-item:last-child{border-bottom:0;}
.check-index{
  flex-shrink:0;width:38px;height:38px;border-radius:11px;background:var(--c-accent-soft);
  color:var(--c-accent-hover);font-weight:700;font-size:14px;
  display:flex;align-items:center;justify-content:center;font-family:Inter,system-ui,sans-serif;
}
.check-item h3{font-size:17px;margin-bottom:6px;}
.check-item p{margin:0;font-size:15px;color:var(--text-2);}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-item{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.faq-item[open]{border-color:var(--c-accent);box-shadow:var(--sh-2);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  min-height:58px;padding:16px 22px;font-size:16.5px;font-weight:600;color:var(--text);
  transition:color var(--t) var(--ease),background var(--t) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-accent-hover);background:#FCFBF9;}
.faq-item summary .q-no{
  flex-shrink:0;font-size:13px;font-weight:700;color:var(--c-amber);
  font-family:Inter,system-ui,sans-serif;letter-spacing:.02em;
}
.faq-item summary .arrow{
  margin-left:auto;flex-shrink:0;color:var(--text-3);transition:transform var(--t) var(--ease),color var(--t) var(--ease);
}
.faq-item[open] summary .arrow{transform:rotate(180deg);color:var(--c-accent);}
.faq-body{padding:0 22px 22px 60px;color:var(--text-2);font-size:15.5px;}
.faq-body p{margin:0 0 .9em;}
.faq-body p:last-child{margin-bottom:0;}

/* ============ 表单 ============ */
.feedback-layout{display:grid;grid-template-columns:0.9fr 1.1fr;gap:48px;align-items:start;}
.feedback-intro h2{font-size:30px;}
.feedback-intro p{color:var(--text-2);margin-top:14px;}
.mini-steps{list-style:none;padding:0;margin:26px 0 0;}
.mini-steps li{display:flex;gap:12px;padding:12px 0;font-size:15px;color:var(--text-2);border-top:1px solid var(--border);}
.mini-steps li:last-child{border-bottom:1px solid var(--border);}
.mini-steps .dot{
  width:22px;height:22px;flex-shrink:0;border-radius:50%;background:var(--c-amber-soft);color:var(--c-amber-hover);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:4px;
}
.form-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:30px 32px;box-shadow:var(--sh-2);
}
.form-row{margin-bottom:18px;}
.form-row label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;}
.form-row .hint{font-size:12.5px;color:var(--text-3);font-weight:400;margin-left:6px;}
.field{
  width:100%;height:46px;border:1px solid var(--border);border-radius:10px;
  background:#FCFBF9;padding:0 14px;outline:none;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease);
}
textarea.field{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical;}
select.field{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field:focus{border-color:var(--c-accent);background:#fff;box-shadow:0 0 0 3px var(--c-accent-soft);}
.field::placeholder{color:var(--text-3);}
.field.is-error{border-color:var(--err);}
.error-text{display:none;font-size:12.5px;color:var(--err);margin-top:6px;}
.field.is-error + .error-text{display:block;}
.form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:24px;}
.form-note{
  font-size:13.5px;color:var(--text-3);margin:14px 0 0;
}
.form-result{
  display:none;margin-top:18px;padding:14px 16px;border-radius:10px;
  background:var(--c-accent-soft);color:var(--c-primary);font-size:14px;border:1px solid #C6E4E0;
}
.form-result.is-show{display:block;}

/* ============ CTA 窄带 ============ */
.cta-band{
  background:var(--dark-2);color:var(--text-inv);border-radius:var(--r-lg);
  padding:34px 40px;display:flex;align-items:center;gap:28px;flex-wrap:wrap;
  justify-content:space-between;box-shadow:var(--sh-2);
}
.cta-band h2{font-size:22px;color:var(--text-inv);}
.cta-band p{margin:8px 0 0;color:rgba(242,240,234,.7);font-size:15px;}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.cta-outline{background:transparent;color:var(--text-inv);border-color:var(--border-dark);}
.cta-outline:hover{background:rgba(47,167,155,.14);border-color:var(--c-accent);color:#fff;}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(242,240,234,.7);padding:72px 0 28px;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(140deg,var(--c-accent),var(--c-primary-light));}
.footer-brand .brand-text{color:var(--text-inv);font-size:17px;font-weight:700;}
.footer-desc{font-size:14px;line-height:1.75;color:rgba(242,240,234,.62);max-width:320px;margin:0;}
.footer-col h4{font-size:15px;color:var(--text-inv);margin-bottom:16px;font-weight:600;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(242,240,234,.7);transition:color var(--t) var(--ease),transform var(--t) var(--ease);width:fit-content;}
.footer-links a:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:3px;transform:translateX(2px);}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(242,240,234,.62);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--border-dark);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(242,240,234,.55);
}
.to-top{display:inline-flex;align-items:center;gap:8px;color:rgba(242,240,234,.7);transition:color var(--t) var(--ease);}
.to-top:hover{color:var(--c-accent);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 28px;}
  .cat-hero h1{font-size:38px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .cat-hero-head{grid-template-columns:1fr;gap:26px;align-items:start;}
  .cat-hero h1{font-size:34px;}
  .check-layout{grid-template-columns:1fr;gap:32px;}
  .check-visual{order:0;aspect-ratio:16/10;}
  .feedback-layout{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .stat-band{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--border);}
  .header-search{max-width:280px;}
  .trend-tags{display:none;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.75;}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .header-main{height:60px;}
  .header-search{display:none;}
  .ghost-link{display:none;}
  .drawer-toggle{display:flex;}
  .channels-inner{height:46px;}
  .hero-banner{aspect-ratio:16/11;}
  .hero-banner-text{padding:22px 20px;}
  .hero-banner-text h2{font-size:19px;}
  .hero-banner-text p{font-size:14px;}
  .cat-hero h1{font-size:28px;}
  .section-head h2{font-size:25px;}
  .feedback-intro h2{font-size:24px;}
  .stat-item{padding:20px 18px;}
  .stat-num{font-size:28px;}
  .form-card{padding:24px 20px;}
  .cta-band{padding:26px 22px;}
  .cta-band h2{font-size:19px;}
  .faq-body{padding:0 18px 20px 18px;}
  .faq-item summary{padding:14px 18px;font-size:15.5px;gap:12px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .site-footer{padding:56px 0 24px;margin-top:64px;}
}
@media (max-width:479px){
  .cat-hero h1{font-size:25px;}
  .stat-band{grid-template-columns:1fr;}
  .stat-item{border-right:0;border-bottom:1px solid var(--border);}
  .stat-item:last-child{border-bottom:0;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{flex:1;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;}
  html{scroll-behavior:auto;}
}