/* roulang page: index */
:root{
  --ink:#0C1F1E;
  --primary:#0E3B3A;
  --green:#17A38A;
  --coral:#E4572E;
  --bg:#F7F5F0;
  --card:#FFFFFF;
  --line:#E2DCD0;
  --muted:#6B7674;
  --err:#C0392B;
  --radius-card:6px;
  --radius-btn:4px;
  --shadow-1:0 1px 2px rgba(12,31,30,.05);
  --shadow-2:0 14px 34px -14px rgba(12,31,30,.20);
  --container:1200px;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",STSong,"SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:600;letter-spacing:-.01em;line-height:1.28;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--green);outline-offset:3px;border-radius:2px;}
::selection{background:rgba(23,163,138,.18);}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;}
.section{padding:96px 0;}
section[id],div[id]{scroll-margin-top:124px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--coral);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:#ef6a44;transform:translateY(-1px);box-shadow:0 10px 22px -14px rgba(228,87,46,.9);}
.btn-primary:active{transform:translateY(0);box-shadow:none;background:#d94f28;}
.btn-ghost{background:transparent;color:var(--primary);border-color:var(--primary);}
.btn-ghost:hover{background:rgba(14,59,58,.06);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);background:rgba(14,59,58,.1);}
.btn-light{background:#fff;color:var(--primary);border-color:#fff;}
.btn-light:hover{background:#eef4f2;transform:translateY(-1px);}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--primary);position:relative;padding-bottom:2px;}
.btn-link::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--green);transition:width .18s ease;}
.btn-link:hover::after{width:100%;}
.btn:disabled,.btn[disabled]{opacity:.4;pointer-events:none;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--bg);border-bottom:1px solid var(--line);transition:box-shadow .22s ease;}
.site-header.is-stuck{box-shadow:0 4px 12px -8px rgba(12,31,30,.35);}
.header-top{display:flex;align-items:center;gap:24px;padding-top:16px;padding-bottom:14px;transition:padding .22s ease;}
.site-header.is-stuck .header-top{padding-top:9px;padding-bottom:9px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{width:34px;height:34px;border-radius:6px;background:var(--primary);display:grid;place-items:center;color:#fff;flex:none;}
.brand-mark svg{width:19px;height:19px;}
.brand-text{font-family:var(--serif);font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.search{flex:1 1 auto;max-width:380px;display:flex;align-items:center;gap:9px;height:44px;padding:0 14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-btn);transition:border-color .18s ease,box-shadow .18s ease;}
.search:focus-within{border-color:var(--green);box-shadow:0 0 0 3px rgba(23,163,138,.1);}
.search-ico{width:17px;height:17px;flex:none;stroke:var(--muted);fill:none;stroke-width:1.8;stroke-linecap:round;}
.search input{flex:1;min-width:0;height:100%;border:0;background:none;outline:none;font-size:14px;}
.search input::placeholder{color:#9aa5a2;}
.header-side{display:flex;align-items:center;gap:18px;flex:none;margin-left:auto;}
.hot-links{display:flex;align-items:center;gap:14px;}
.hot-links a{font-size:13px;color:var(--coral);position:relative;}
.hot-links a:hover{text-decoration:underline;text-underline-offset:4px;}
.header-nav{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:10px;padding-bottom:12px;border-top:1px solid var(--line);transition:padding .22s ease;}
.main-nav{display:flex;align-items:center;gap:30px;}
.main-nav a{position:relative;font-size:15px;font-weight:500;padding:5px 0;color:var(--ink);transition:color .18s ease;}
.main-nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--green);transform:scaleX(0);transform-origin:left;transition:transform .18s ease;}
.main-nav a:hover::after,.main-nav a.is-active::after{transform:scaleX(1);}
.main-nav a:hover,.main-nav a.is-active{color:var(--primary);}
.trend{display:flex;align-items:center;gap:10px;overflow:hidden;}
.trend-label{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:2px;padding:1px 7px;flex:none;}
.trend-track{display:flex;gap:16px;overflow-x:auto;scrollbar-width:none;}
.trend-track::-webkit-scrollbar{display:none;}
.trend-track a{font-size:13px;color:var(--muted);white-space:nowrap;transition:color .18s ease;}
.trend-track a:hover{color:var(--green);}
.nav-toggle{display:none;width:44px;height:44px;padding:0;border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;cursor:pointer;place-items:center;flex:none;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--primary);transition:transform .2s ease,opacity .2s ease;}
.nav-toggle span+span{margin-top:4px;}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:90;background:var(--bg);display:none;flex-direction:column;padding:18px 20px 32px;overflow-y:auto;}
.drawer.is-open{display:flex;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line);}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;display:grid;place-items:center;cursor:pointer;font-size:20px;line-height:1;color:var(--primary);}
.drawer .search{max-width:none;margin-top:20px;width:100%;}
.drawer-nav{display:flex;flex-direction:column;margin-top:24px;}
.drawer-nav a{padding:15px 2px;font-size:17px;font-weight:500;border-bottom:1px solid var(--line);font-family:var(--serif);}
.drawer-nav a.is-active{color:var(--green);}
.drawer-cta{margin-top:26px;display:flex;flex-direction:column;gap:12px;}
.drawer-hot{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.drawer-hot a{font-size:13px;color:var(--coral);background:rgba(228,87,46,.1);border-radius:2px;padding:4px 10px;}

/* ---------- hero ---------- */
.hero{padding:64px 0 0;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--green);font-weight:500;}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--green);display:block;}
.hero h1{font-size:clamp(32px,3.8vw,50px);margin-top:18px;letter-spacing:-.015em;}
.hero-sub{margin-top:20px;font-size:18px;font-weight:500;color:var(--primary);}
.hero-text{margin-top:14px;font-size:16px;color:#41504e;max-width:34em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:28px;}
.hero-points li{position:relative;padding-left:16px;font-size:14px;color:var(--muted);}
.hero-points li::before{content:"";position:absolute;left:0;top:.7em;width:6px;height:6px;border-radius:1px;background:var(--green);}
.hero-visual{position:relative;padding-bottom:34px;}
.hero-photo{position:relative;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;aspect-ratio:5/4;background-color:#dfe7e3;background-size:cover;background-position:center;box-shadow:var(--shadow-1);}
.hero-photo::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,59,58,.05),rgba(14,59,58,.62));}
.hero-photo-label{position:absolute;left:20px;bottom:18px;z-index:2;color:#fff;font-size:13px;letter-spacing:.06em;}
.hero-photo-label strong{display:block;font-family:var(--serif);font-size:19px;letter-spacing:0;margin-bottom:2px;}
.hero-float{position:absolute;right:-14px;bottom:0;width:46%;max-width:216px;min-width:150px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:9px 10px 11px;box-shadow:var(--shadow-2);}
.hero-float img{width:100%;height:86px;object-fit:cover;border-radius:4px;}
.hero-float figcaption{margin-top:8px;font-size:12px;color:var(--muted);display:flex;align-items:baseline;gap:5px;}
.hero-float figcaption strong{font-family:var(--serif);font-size:22px;color:var(--primary);line-height:1;}

/* ---------- anchor bar ---------- */
.anchor-bar{margin-top:56px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.55);}
.anchor-inner{display:flex;gap:34px;overflow-x:auto;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner a{flex:none;padding:15px 0;font-size:14px;color:var(--muted);border-bottom:2px solid transparent;transition:color .18s ease,border-color .18s ease;}
.anchor-inner a:hover,.anchor-inner a.is-current{color:var(--primary);border-bottom-color:var(--green);}

/* ---------- generic section head ---------- */
.section-head h2{font-size:clamp(24px,2.6vw,36px);}
.section-head .lead{margin-top:16px;font-size:15px;color:var(--muted);}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* ---------- features ---------- */
.features-grid{display:grid;grid-template-columns:1fr 2fr;gap:56px;align-items:start;}
.sticky-head{position:sticky;top:132px;}
.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.feature-card{background:var(--card);border:1px solid var(--line);border-top:2px solid var(--primary);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-1);transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;}
.feature-card:hover{border-color:var(--green);border-top-color:var(--green);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.feature-card .num{display:block;font-family:var(--serif);font-size:26px;line-height:1;color:rgba(14,59,58,.32);}
.feature-card h3{font-size:20px;margin-top:16px;}
.feature-card p{margin-top:10px;font-size:15px;color:var(--muted);}

/* ---------- demo ---------- */
.demo-list{border-top:1px solid var(--line);}
.demo-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:52px 0;border-bottom:1px solid var(--line);}
.demo-row.reverse .demo-text{order:2;}
.demo-text h3{font-size:clamp(21px,2vw,26px);}
.demo-text p{margin-top:14px;font-size:15px;color:#41504e;}
.point-list{margin-top:20px;}
.point-list li{position:relative;padding-left:18px;margin-top:11px;font-size:15px;color:#41504e;}
.point-list li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:1px;background:var(--green);}
.demo-figure{border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:#e6ece9;box-shadow:var(--shadow-1);}
.demo-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
.demo-figure figcaption{padding:12px 16px;font-size:13px;color:var(--muted);background:#fff;border-top:1px solid var(--line);}

/* ---------- proof ---------- */
.proof-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;margin-top:52px;}
.proof-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-1);transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;}
.proof-card:nth-child(2){transform:translateY(32px);}
.proof-card:hover{border-color:var(--green);box-shadow:var(--shadow-2);}
.proof-card:nth-child(2):hover{transform:translateY(30px);}
.proof-quote{font-family:var(--serif);font-size:17px;line-height:1.7;color:var(--primary);}
.proof-source{margin-top:14px;font-size:13px;color:var(--muted);}
.proof-num{margin-top:22px;padding-top:18px;border-top:1px solid var(--line);display:flex;align-items:baseline;gap:8px;}
.proof-num strong{font-family:var(--serif);font-size:44px;line-height:1;color:var(--coral);font-variant-numeric:tabular-nums;}
.proof-num span{font-size:13px;color:var(--muted);}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px;}
.news-item{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-1);transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;}
.news-item:hover{border-color:var(--green);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.news-item--wide{grid-column:span 2;}
.news-thumb{display:block;border-radius:4px;overflow:hidden;margin-bottom:18px;border:1px solid var(--line);}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.news-tag{align-self:flex-start;font-size:12px;color:#0d6f5f;background:rgba(23,163,138,.12);border-radius:2px;padding:2px 10px;}
.news-title{font-size:18px;margin-top:12px;transition:color .18s ease;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-item:hover .news-title{color:var(--green);}
.news-desc{margin-top:10px;font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;}
.news-empty{margin-top:44px;border:1px dashed var(--line);border-radius:var(--radius-card);padding:56px 24px;text-align:center;background:rgba(255,255,255,.5);}
.news-empty svg{width:34px;height:34px;stroke:var(--muted);fill:none;stroke-width:1.5;margin:0 auto 14px;}
.news-empty p{font-size:15px;color:var(--muted);}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 2.4fr;gap:56px;align-items:start;}
.faq-list{margin-top:8px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{list-style:none;cursor:pointer;position:relative;padding:20px 44px 20px 0;font-size:17px;font-weight:500;font-family:var(--serif);transition:color .18s ease;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary);}
.faq-item summary::after{content:"+";position:absolute;right:8px;top:50%;transform:translateY(-50%);font-family:var(--sans);font-size:20px;font-weight:400;color:var(--green);line-height:1;transition:transform .2s ease;}
.faq-item[open] summary::after{content:"–";}
.faq-body{padding:0 44px 22px 0;font-size:15px;color:var(--muted);}

/* ---------- cta ---------- */
.cta-band{background:var(--primary);color:#fff;padding:80px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(24px,2.6vw,34px);color:#fff;max-width:20em;}
.cta-inner p{margin-top:14px;font-size:15px;color:rgba(255,255,255,.72);max-width:34em;}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg);padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand-text{font-size:18px;}
.footer-brand p{margin-top:16px;font-size:13px;color:var(--muted);max-width:26em;line-height:1.9;}
.footer-col h4{font-family:var(--sans);font-size:14px;font-weight:500;margin-bottom:16px;color:var(--ink);}
.footer-col li+li{margin-top:10px;}
.footer-col a,.footer-col span{font-size:13px;color:var(--muted);transition:color .18s ease,transform .18s ease;display:inline-block;}
.footer-col a:hover{color:var(--primary);transform:translateX(2px);}
.footer-bottom{margin-top:48px;border-top:1px solid var(--line);padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--muted);}

/* ---------- float cta ---------- */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:50;display:flex;flex-direction:column;align-items:flex-end;gap:12px;}
.float-cta .fab{display:inline-flex;align-items:center;justify-content:center;height:44px;min-width:44px;padding:0 18px;border-radius:999px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-1);font-size:13px;font-weight:500;color:var(--primary);transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;}
.float-cta .fab:hover{border-color:var(--green);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.float-cta .fab-main{background:var(--coral);border-color:var(--coral);color:#fff;}
.float-cta .fab-main:hover{background:#ef6a44;border-color:#ef6a44;}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease;}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .container{padding:0 32px;}
  .hero-grid{gap:40px;}
  .features-grid,.faq-grid{gap:40px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .hero{padding-top:48px;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-visual{padding-bottom:40px;max-width:560px;}
  .features-grid{grid-template-columns:1fr;gap:32px;}
  .sticky-head{position:static;}
  .feature-grid{grid-template-columns:1fr 1fr;}
  .faq-grid{grid-template-columns:1fr;gap:28px;}
  .proof-grid{grid-template-columns:1fr 1fr;}
  .proof-card:nth-child(2){transform:none;}
  .proof-card:nth-child(2):hover{transform:translateY(-2px);}
  .news-grid{grid-template-columns:1fr 1fr;}
  .news-item--wide{grid-column:span 2;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .demo-row{gap:36px;}
  .hot-links{display:none;}
}
@media (max-width:900px){
  .search{display:none;}
  .header-side .btn{display:none;}
  .header-nav{display:none;}
  .nav-toggle{display:grid;}
  .header-top{padding-top:12px;padding-bottom:12px;}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .hero{padding-top:36px;}
  .anchor-bar{margin-top:40px;}
  .demo-row{grid-template-columns:1fr;gap:24px;padding:36px 0;}
  .demo-row.reverse .demo-text{order:0;}
  .demo-figure img{aspect-ratio:16/10;}
  .proof-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .news-item--wide{grid-column:span 1;}
  .cta-band{padding:56px 0;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:26px;}
  .float-cta{left:0;right:0;bottom:0;flex-direction:row;align-items:center;padding:8px 16px calc(8px + env(safe-area-inset-bottom));background:#fff;border-top:1px solid var(--line);gap:12px;}
  .float-cta .fab-main{flex:1;border-radius:var(--radius-btn);height:48px;font-size:15px;}
  .float-cta .fab{height:48px;}
  .float-cta .fab-top{width:48px;padding:0;flex:none;border-radius:999px;}
  .site-footer{padding-bottom:72px;}
  .hero-float{right:0;}
}
@media (max-width:520px){
  .container{padding:0 20px;}
  .brand-text{font-size:15px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:16px;}
  .hero-text{font-size:15px;}
  .hero-actions .btn{flex:1 1 auto;}
  .feature-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .hero-float{max-width:170px;}
  .hero-float img{height:70px;}
  .proof-num strong{font-size:38px;}
  .faq-item summary{font-size:16px;padding-right:36px;}
  .faq-body{padding-right:8px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* roulang page: category1 */
:root{
  --ink:#0C1F1E;
  --ink-green:#0E3B3A;
  --water:#17A38A;
  --water-soft:rgba(23,163,138,.12);
  --coral:#E4572E;
  --coral-soft:rgba(228,87,46,.12);
  --sand:#F7F5F0;
  --card:#FFFFFF;
  --line:#E2DCD0;
  --muted:#6B7674;
  --danger:#C0392B;
  --radius-card:6px;
  --radius-btn:4px;
  --shadow-1:0 1px 2px rgba(12,31,30,.05);
  --shadow-2:0 14px 34px -14px rgba(12,31,30,.20);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --container:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--sand);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-card);}
a{color:var(--ink-green);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--water);}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink-green);margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--water);outline-offset:3px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;line-height:1;border:1px solid transparent;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--coral);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:#ec6a41;color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--ink-green);border-color:var(--ink-green);}
.btn-ghost:hover{background:var(--ink-green);color:#fff;transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-soft{background:#fff;color:var(--ink-green);border-color:var(--line);box-shadow:var(--shadow-1);}
.btn-soft:hover{border-color:var(--water);color:var(--water);transform:translateY(-1px);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:2px;font-size:12px;line-height:1.6;font-weight:500;
  letter-spacing:.02em;
}
.badge-green{background:var(--water-soft);color:#0d7361;}
.badge-coral{background:var(--coral-soft);color:#b8401c;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--sand);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 12px -8px rgba(12,31,30,.45);}
.header-top{
  display:flex;align-items:center;gap:24px;
  padding:16px 0;
  transition:padding .2s ease;
}
.site-header.is-scrolled .header-top{padding:9px 0;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:36px;height:36px;flex:none;display:grid;place-items:center;
  border-radius:6px;background:var(--ink-green);color:#fff;
  transition:transform .2s ease;
}
.brand-mark svg{width:22px;height:22px;}
.brand:hover .brand-mark{transform:translateY(-1px);}
.brand-text{
  font-family:var(--serif);font-size:19px;font-weight:700;color:var(--ink-green);
  letter-spacing:-.01em;white-space:nowrap;
}
.search{
  flex:1 1 auto;max-width:340px;display:flex;align-items:center;gap:8px;
  height:44px;padding:0 14px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search:focus-within{border-color:var(--ink-green);box-shadow:0 0 0 3px rgba(14,59,58,.06);}
.search svg{width:17px;height:17px;color:var(--muted);flex:none;}
.search input{
  flex:1 1 auto;border:0;background:transparent;font-size:14px;color:var(--ink);
  min-width:0;padding:0;
}
.search input::placeholder{color:#9aa4a2;}
.search input:focus{outline:none;}
.hot-words{display:flex;align-items:center;gap:12px;font-size:13px;flex:none;}
.hot-words .hot-label{color:var(--muted);}
.hot-words a{color:var(--coral);font-weight:500;}
.hot-words a:hover{color:#b8401c;text-decoration:underline;text-underline-offset:3px;}
.header-cta{flex:none;}
.header-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:0 0 2px;
  border-top:1px solid var(--line);
}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
  position:relative;display:inline-block;
  padding:14px 16px;font-size:15px;color:var(--ink-green);font-weight:500;
  transition:color .18s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:16px;right:16px;bottom:6px;height:2px;
  background:var(--water);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease;
}
.main-nav a:hover{color:var(--water);}
.main-nav a:hover::after,.main-nav a.is-active::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--ink-green);font-weight:700;}
.site-header.is-scrolled .main-nav a{padding:10px 16px;}
.site-header.is-scrolled .main-nav a::after{bottom:2px;}
.trend-bar{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);overflow:hidden;}
.trend-bar .trend-label{
  display:inline-flex;align-items:center;gap:6px;color:var(--water);
  font-weight:500;flex:none;
}
.trend-bar .trend-label::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--water);
}
.trend-bar a{color:var(--muted);white-space:nowrap;}
.trend-bar a:hover{color:var(--ink-green);}
.site-header.is-scrolled .trend-bar{display:none;}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#fff;color:var(--ink-green);align-items:center;justify-content:center;
}
.menu-toggle svg{width:20px;height:20px;}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:120;background:var(--sand);
  display:flex;flex-direction:column;padding:20px;
  transform:translateX(100%);transition:transform .26s ease;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#fff;color:var(--ink-green);display:grid;place-items:center;
}
.drawer-close svg{width:20px;height:20px;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:24px;}
.drawer-nav a{
  padding:14px 4px;font-size:16px;font-weight:500;color:var(--ink-green);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--water);}
.drawer-block{margin-bottom:24px;}
.drawer-block h4{
  font-family:var(--sans);font-size:13px;font-weight:500;color:var(--muted);
  margin-bottom:10px;letter-spacing:.04em;
}
.drawer-tags{display:flex;flex-wrap:wrap;gap:10px;}
.drawer-tags a{
  padding:8px 14px;border:1px solid var(--line);border-radius:99px;
  font-size:13px;color:var(--ink-green);background:#fff;
}
.drawer-footer{margin-top:auto;padding-top:20px;font-size:13px;color:var(--muted);}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);margin-bottom:28px;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--water);}
.breadcrumb .sep{color:#b9c0be;}
.breadcrumb span[aria-current]{color:var(--ink-green);}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  padding:36px 0 68px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(247,245,240,.95),rgba(247,245,240,.99)),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
}
.page-hero-grid{
  display:grid;grid-template-columns:1.4fr 1fr;gap:56px;align-items:start;
}
.page-hero h1{
  font-size:46px;line-height:1.28;margin:16px 0 18px;
  letter-spacing:-.015em;
}
.page-hero .lead{
  font-size:17px;color:var(--muted);line-height:1.85;max-width:34em;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.page-hero-side{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:26px;
}
.side-note{
  font-size:13px;color:var(--muted);letter-spacing:.04em;margin-bottom:16px;
  display:flex;align-items:center;gap:8px;
}
.side-note::before{content:"";width:16px;height:1px;background:var(--water);}
.stat-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:22px;}
.stat-item .num{
  font-family:var(--serif);font-size:32px;font-weight:700;color:var(--ink-green);
  line-height:1.1;font-variant-numeric:tabular-nums;
}
.stat-item .num small{font-size:14px;font-weight:500;margin-left:2px;color:var(--muted);}
.stat-item .label{font-size:12px;color:var(--muted);margin-top:4px;line-height:1.6;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.side-divider{height:1px;background:var(--line);margin:20px 0;}
.side-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:14px;font-weight:500;color:var(--ink-green);
}
.side-link:hover{color:var(--water);}
.side-link span.arrow{transition:transform .18s ease;}
.side-link:hover span.arrow{transform:translateX(3px);}

/* ---------- 主体两列 ---------- */
.content-grid{
  display:grid;grid-template-columns:264px minmax(0,1fr);gap:56px;align-items:start;
}
.toc{position:sticky;top:132px;align-self:start;}
.toc-title{
  font-family:var(--sans);font-size:13px;font-weight:500;color:var(--muted);
  letter-spacing:.06em;margin-bottom:14px;
}
.toc ol{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line);}
.toc a{
  display:block;padding:9px 0 9px 16px;font-size:14px;line-height:1.6;color:var(--muted);
  border-left:2px solid transparent;margin-left:-1px;
  transition:color .18s ease,border-color .18s ease,transform .18s ease;
}
.toc a:hover{color:var(--ink-green);transform:translateX(2px);}
.toc a.is-active{color:var(--ink-green);border-left-color:var(--water);font-weight:500;}
.toc-card{
  margin-top:24px;padding:20px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);
}
.toc-card p{font-size:13px;color:var(--muted);line-height:1.75;margin-bottom:14px;}
.toc-card .btn{width:100%;}

.content-main{min-width:0;}
.section-block{
  padding-bottom:40px;margin-bottom:40px;border-bottom:1px solid var(--line);
}
.section-block:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0;}
.section-block .num-mark{
  font-family:var(--serif);font-size:40px;line-height:1;color:rgba(14,59,58,.16);
  font-weight:700;display:block;margin-bottom:6px;
}
.section-block h2{
  font-size:30px;line-height:1.35;margin-bottom:18px;
}
.section-block h3{
  font-size:20px;line-height:1.5;margin:26px 0 12px;
}
.section-block p{color:#20302f;line-height:1.85;margin-bottom:1.1em;}
.section-block p.lead-line{font-size:17px;color:var(--ink);font-weight:500;}
.point-list{display:flex;flex-direction:column;gap:12px;margin:20px 0 4px;}
.point-list li{
  position:relative;padding-left:20px;font-size:15px;line-height:1.8;color:#20302f;
}
.point-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;
  background:var(--water);border-radius:1px;
}
.figure-block{margin:26px 0;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:#fff;box-shadow:var(--shadow-1);}
.figure-block img{width:100%;height:auto;border-radius:0;}
.figure-block figcaption{
  padding:12px 18px;font-size:13px;color:var(--muted);
  border-top:1px solid var(--line);background:#fdfcfa;
}
.quote-block{
  border-left:3px solid var(--water);background:#f2efea;
  padding:18px 22px;border-radius:0 var(--radius-card) var(--radius-card) 0;
  font-size:15px;color:#2a3b3a;margin:22px 0;
}
.quote-block p:last-child{margin-bottom:0;}

/* ---------- 流程带 ---------- */
.steps-band{
  background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.steps-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px;}
.steps-head h2{font-size:34px;line-height:1.3;}
.steps-head p{font-size:15px;color:var(--muted);margin:8px 0 0;}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step-card{
  position:relative;padding:26px 22px 24px;background:var(--sand);
  border:1px solid var(--line);border-radius:var(--radius-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--water);}
.step-dot{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  background:var(--ink-green);color:#fff;font-family:var(--serif);font-size:14px;
  font-weight:700;margin-bottom:16px;
}
.step-card h3{font-size:18px;margin-bottom:8px;}
.step-card p{font-size:14px;color:var(--muted);line-height:1.75;margin:0;}
.step-card .step-meta{
  display:block;margin-top:14px;padding-top:12px;border-top:1px solid var(--line);
  font-size:12px;color:var(--water);letter-spacing:.04em;
}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:3fr 9fr;gap:56px;align-items:start;}
.faq-intro h2{font-size:34px;line-height:1.3;margin-bottom:14px;}
.faq-intro p{font-size:15px;color:var(--muted);line-height:1.8;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:17px;font-weight:500;color:var(--ink-green);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:none;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);display:grid;place-items:center;
  font-size:16px;font-weight:400;color:var(--water);background:#fff;
  transition:transform .2s ease,background-color .2s ease;
}
.faq-item[open] summary::after{content:"−";background:var(--water-soft);transform:rotate(180deg);}
.faq-item summary:hover{color:var(--water);}
.faq-item .faq-body{padding:0 0 22px;font-size:15px;color:var(--muted);line-height:1.85;max-width:52em;}
.faq-item .faq-body p:last-child{margin-bottom:0;}

/* ---------- 相关入口 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.related-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--water);}
.related-card .thumb{overflow:hidden;aspect-ratio:16/9;background:#eee9e0;}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s ease;}
.related-card:hover .thumb img{transform:scale(1.03);}
.related-card .body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.related-card h3{font-size:20px;line-height:1.5;}
.related-card p{font-size:14px;color:var(--muted);line-height:1.8;margin:0;}
.related-card .more{
  margin-top:auto;font-size:14px;font-weight:500;color:var(--water);
  display:inline-flex;align-items:center;gap:6px;
}
.related-card:hover .more{gap:10px;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink-green);color:#fff;padding:72px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:34px;line-height:1.35;max-width:22em;}
.cta-inner p{color:rgba(255,255,255,.74);font-size:15px;margin:12px 0 0;max-width:34em;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.btn-on-dark{background:var(--coral);color:#fff;}
.btn-on-dark:hover{background:#ec6a41;color:#fff;transform:translateY(-1px);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.5);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;transform:translateY(-1px);}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:28px;z-index:60;
  display:flex;flex-direction:column;align-items:flex-end;gap:12px;
}
.float-cta .btn{border-radius:999px;box-shadow:var(--shadow-2);}
.to-top{
  width:46px;height:46px;border-radius:50%;border:1px solid var(--line);
  background:#fff;color:var(--ink-green);display:grid;place-items:center;
  box-shadow:var(--shadow-1);transition:transform .18s ease,border-color .18s ease,color .18s ease;
}
.to-top:hover{transform:translateY(-2px);border-color:var(--water);color:var(--water);}
.to-top svg{width:18px;height:18px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#f2efe8;border-top:1px solid var(--line);padding:64px 0 28px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid var(--line);
}
.footer-brand p{font-size:13px;color:var(--muted);line-height:1.8;margin:16px 0 0;max-width:26em;}
.footer-col h4{
  font-family:var(--sans);font-size:14px;font-weight:500;color:var(--ink-green);
  margin-bottom:14px;letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col span{font-size:13px;color:var(--muted);line-height:1.7;}
.footer-col a:hover{color:var(--ink-green);transform:translateX(2px);display:inline-block;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:22px;font-size:13px;color:var(--muted);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s ease;}
.reveal.is-in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 32px;}
  .page-hero h1{font-size:40px;}
  .content-grid{grid-template-columns:230px minmax(0,1fr);gap:40px;}
}
@media (max-width:1024px){
  .section{padding:72px 0;}
  .header-top{gap:16px;}
  .hot-words{display:none;}
  .search{max-width:260px;}
  .page-hero-grid{grid-template-columns:1fr;gap:32px;}
  .page-hero-side{padding:22px;}
  .content-grid{grid-template-columns:1fr;gap:32px;}
  .toc{position:static;top:auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;}
  .toc ol{border-left:0;display:grid;grid-template-columns:1fr 1fr;gap:4px 16px;}
  .toc a{border-left:0;padding:6px 0 6px 14px;position:relative;}
  .toc a::before{
    content:"";position:absolute;left:0;top:16px;width:6px;height:1px;background:var(--line);
  }
  .toc a.is-active::before{background:var(--water);width:10px;}
  .toc a.is-active{border-left-color:transparent;}
  .toc-card{margin-top:18px;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .steps-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .header-top{padding:12px 0;gap:12px;}
  .site-header.is-scrolled .header-top{padding:10px 0;}
  .search,.hot-words,.header-cta{display:none;}
  .menu-toggle{display:flex;margin-left:auto;}
  .header-bottom{display:none;}
  .brand-text{font-size:17px;}
  .page-hero{padding:20px 0 48px;}
  .page-hero h1{font-size:31px;line-height:1.34;}
  .page-hero .lead{font-size:15.5px;}
  .breadcrumb{margin-bottom:20px;font-size:12.5px;}
  .stat-strip{grid-template-columns:repeat(3,1fr);gap:8px;}
  .stat-item .num{font-size:26px;}
  .content-grid{gap:24px;}
  .toc{padding:16px;}
  .toc ol{grid-template-columns:1fr;}
  .section-block h2{font-size:23px;}
  .section-block .num-mark{font-size:30px;}
  .section-block{padding-bottom:28px;margin-bottom:28px;}
  .steps-grid{grid-template-columns:1fr;gap:16px;}
  .steps-head h2{font-size:26px;}
  .faq-intro h2{font-size:26px;}
  .faq-item summary{font-size:15.5px;padding:18px 0;}
  .related-grid{grid-template-columns:1fr;}
  .cta-band{padding:52px 0;}
  .cta-inner h2{font-size:25px;}
  .float-cta{
    left:0;right:0;bottom:0;top:auto;flex-direction:row;align-items:center;
    justify-content:space-between;gap:12px;padding:10px 20px calc(10px + env(safe-area-inset-bottom));
    background:rgba(247,245,240,.96);border-top:1px solid var(--line);
  }
  .float-cta .btn{flex:1 1 70%;border-radius:var(--radius-btn);box-shadow:none;}
  .to-top{flex:none;}
  body{padding-bottom:72px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:28px;}
  .site-footer{padding:44px 0 20px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;font-size:12.5px;}
}
@media (max-width:480px){
  .page-hero h1{font-size:26px;}
  .hero-actions .btn{width:100%;}
  .stat-strip{grid-template-columns:1fr;gap:10px;}
  .stat-item{display:flex;align-items:baseline;gap:10px;}
  .stat-item .label{margin-top:0;}
  .brand-text{font-size:16px;}
  .related-card .body{padding:18px;}
}

/* roulang page: article */
:root{
  --ink:#0C1F1E;
  --teal:#0E3B3A;
  --teal-soft:#17504E;
  --green:#17A38A;
  --coral:#E4572E;
  --sand:#F7F5F0;
  --sand-deep:#F2EEE7;
  --card:#FFFFFF;
  --line:#E2DCD0;
  --muted:#6B7674;
  --err:#C0392B;
  --radius-card:6px;
  --radius-btn:4px;
  --shadow-1:0 1px 2px rgba(12,31,30,.05);
  --shadow-2:0 14px 34px -14px rgba(12,31,30,.20);
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC","SimSun",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:124px}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;font-weight:600}
svg{display:block}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
:focus-visible{outline:2px solid var(--green);outline-offset:3px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--coral);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:#ee6740;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--teal);color:var(--teal)}
.btn-ghost:hover{background:rgba(14,59,58,.06);transform:translateY(-1px)}
.btn-ghost:active{transform:none}
.btn-light{background:#fff;color:var(--teal);border-color:#fff}
.btn-light:hover{background:#f0f8f6;transform:translateY(-1px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:2px;font-size:12px;font-weight:500;background:rgba(23,163,138,.12);color:#0F6B5C}
.badge-hot{background:rgba(228,87,46,.12);color:#B23F1E}
.tag{display:inline-flex;align-items:center;padding:4px 10px;border-radius:2px;font-size:12px;color:var(--muted);background:#fff;border:1px solid var(--line)}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--sand);border-bottom:1px solid var(--line);transition:box-shadow .22s ease}
.site-header.is-scrolled{box-shadow:0 4px 12px -8px rgba(12,31,30,.38)}
.header-top{display:flex;align-items:center;gap:24px;padding-top:18px;padding-bottom:14px;transition:padding .22s ease}
.site-header.is-scrolled .header-top{padding-top:10px;padding-bottom:10px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:36px;height:36px;display:grid;place-items:center;border-radius:6px;background:var(--teal);color:#F4F1EA;flex:0 0 auto}
.brand-mark svg{width:21px;height:21px}
.brand-text{font-family:var(--font-serif);font-weight:700;font-size:19px;letter-spacing:.01em;color:var(--teal);white-space:nowrap}
.search-box{
  flex:1 1 auto;max-width:340px;display:flex;align-items:center;gap:8px;
  height:40px;padding:0 12px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-btn);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search-box:focus-within{border-color:var(--teal);box-shadow:0 2px 0 0 var(--green) inset}
.search-box svg{width:16px;height:16px;color:var(--muted);flex:0 0 auto}
.search-box input{flex:1 1 auto;border:0;outline:0;background:transparent;font-size:14px;height:100%}
.search-box input::placeholder{color:#9BA5A2;font-size:13px}
.hot-words{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--muted);flex:0 0 auto}
.hot-label{font-size:12px;color:var(--muted);letter-spacing:.08em}
.hot-words a{color:var(--coral);font-size:13px;transition:opacity .18s ease}
.hot-words a:hover{opacity:.75}
.header-cta{margin-left:auto;flex:0 0 auto}
.header-bottom{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-bottom:12px}
.main-nav{display:flex;align-items:center;gap:28px;font-size:15px}
.main-nav a{position:relative;padding:6px 0;color:#2C3A39;font-weight:500;transition:color .18s ease}
.main-nav a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--green);transition:width .18s ease}
.main-nav a:hover{color:var(--teal)}
.main-nav a:hover::after,.main-nav a.is-active::after{width:100%}
.main-nav a.is-active{color:var(--teal)}
.trend-strip{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted);overflow:auto;scrollbar-width:none;max-width:46%}
.trend-strip::-webkit-scrollbar{display:none}
.trend-strip .trend-label{color:#8E9997;letter-spacing:.08em;flex:0 0 auto}
.trend-strip a{flex:0 0 auto;padding:3px 10px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--muted);transition:.18s ease}
.trend-strip a:hover{color:var(--teal);border-color:var(--green)}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;align-items:center;justify-content:center;cursor:pointer}
.nav-toggle svg{width:20px;height:20px;color:var(--teal)}
.drawer{position:fixed;inset:0;z-index:120;background:var(--sand);display:none;flex-direction:column;padding:20px;overflow:auto}
.drawer.is-open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;cursor:pointer}
.drawer-close svg{width:20px;height:20px;color:var(--teal)}
.drawer-search{display:flex;align-items:center;gap:8px;margin:20px 0;height:44px;padding:0 12px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-btn)}
.drawer-search svg{width:16px;height:16px;color:var(--muted)}
.drawer-search input{flex:1;border:0;outline:0;background:transparent;font-size:14px}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:20px}
.drawer-nav a{padding:14px 4px;font-size:16px;font-family:var(--font-serif);color:var(--teal);border-bottom:1px solid var(--line)}
.drawer-hot{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.drawer-hot a{font-size:13px;color:var(--coral);padding:4px 10px;border:1px solid rgba(228,87,46,.28);border-radius:999px}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:26px 0 6px;font-size:13px;color:var(--muted)}
.breadcrumb a{color:var(--muted);transition:color .18s ease}
.breadcrumb a:hover{color:var(--teal);text-decoration:underline;text-underline-offset:3px}
.breadcrumb .sep{color:#B9C0BE}
.crumb-current{max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#4A5A58}

/* ---------- 文章头 ---------- */
.article-hero{padding:6px 0 32px;border-bottom:1px solid var(--line)}
.article-title{
  font-family:var(--font-serif);font-weight:700;letter-spacing:-.01em;
  font-size:34px;line-height:1.42;color:var(--teal);margin:16px 0 18px;max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:16px;font-size:13px;color:var(--muted)}
.article-meta .meta-item{position:relative;display:inline-flex;align-items:center;gap:6px}
.article-meta .meta-item + .meta-item::before{content:"";position:absolute;left:-9px;top:50%;transform:translateY(-50%);width:1px;height:12px;background:var(--line)}
.article-meta svg{width:14px;height:14px;color:#9BA5A2}

/* ---------- 主体布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:64px;padding:44px 0 0;align-items:start}
.article-main{min-width:0}

/* 正文排版 */
.article-body{font-size:16px;line-height:1.9;color:#22302F}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:1.15em 0}
.article-body h1,.article-body h2,.article-body h3,.article-body h4{font-family:var(--font-serif);color:var(--teal);font-weight:700;line-height:1.5}
.article-body h2{font-size:25px;margin:2em 0 .7em;padding-left:14px;border-left:3px solid var(--green);border-radius:1px}
.article-body h3{font-size:20px;margin:1.7em 0 .6em}
.article-body h4{font-size:17px;margin:1.5em 0 .5em}
.article-body a{color:#0F7F6C;text-decoration:underline;text-underline-offset:3px;transition:color .18s ease}
.article-body a:hover{color:var(--coral)}
.article-body strong{font-weight:600;color:var(--ink)}
.article-body ul,.article-body ol{padding-left:22px;margin:1.1em 0}
.article-body li{margin:.5em 0}
.article-body ul{list-style:none;padding-left:6px}
.article-body ul > li{position:relative;padding-left:18px}
.article-body ul > li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;background:var(--green);border-radius:1px}
.article-body ol{list-style:decimal;padding-left:24px}
.article-body ol > li::marker{color:var(--green);font-weight:600}
.article-body blockquote{margin:26px 0;padding:16px 22px;background:var(--sand-deep);border-left:3px solid var(--green);border-radius:0 4px 4px 0;color:#394948}
.article-body blockquote p{margin:.4em 0}
.article-body img{border-radius:var(--radius-card);margin:26px 0;box-shadow:var(--shadow-1)}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--muted);margin-top:8px;text-align:center}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:14px;background:#fff}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top}
.article-body thead th{background:var(--sand-deep);font-weight:600;color:var(--teal)}
.article-body tbody tr:nth-child(even){background:#FBFAF6}
.article-body code{background:var(--sand-deep);padding:2px 6px;border-radius:3px;font-size:14px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* 无内容状态 */
.empty-article{padding:64px 24px;text-align:center;border:1px dashed var(--line);border-radius:var(--radius-card);background:#fff}
.empty-article h2{font-family:var(--font-serif);font-size:22px;color:var(--teal);margin-bottom:22px}

/* 移动端目录 */
.toc-mobile{display:none;border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;padding:14px 18px;margin-bottom:26px}
.toc-mobile summary{cursor:pointer;font-size:14px;font-weight:600;color:var(--teal);list-style:none}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile summary::after{content:"展开";float:right;font-weight:400;font-size:12px;color:var(--muted)}
.toc-mobile[open] summary::after{content:"收起"}
.toc-mobile .toc-list{margin-top:12px;border-top:1px solid var(--line);padding-top:10px}

/* ---------- 右侧栏 ---------- */
.article-aside{position:sticky;top:112px;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-1)}
.side-title{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--teal);margin-bottom:14px}
.side-title svg{width:15px;height:15px;color:var(--green)}
.toc-list{display:flex;flex-direction:column}
.toc-list a{display:block;font-size:13px;line-height:1.7;color:var(--muted);padding:7px 0 7px 14px;border-left:2px solid transparent;transition:color .18s ease,border-color .18s ease,background .18s ease}
.toc-list a:hover{color:var(--teal);background:#FBFAF6}
.toc-list a.is-active{color:var(--teal);font-weight:500;border-left-color:var(--green)}
.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:13px;color:#3C4B4A;padding:10px 0;border-bottom:1px solid #F0EBE2;transition:color .18s ease,transform .18s ease}
.side-links a:last-child{border-bottom:0}
.side-links a:hover{color:var(--green);transform:translateX(2px)}
.side-links svg{width:13px;height:13px;color:#B9C0BE;flex:0 0 auto}
.side-card .btn{width:100%;margin-top:16px}
.side-note{font-size:12px;line-height:1.8;color:var(--muted);margin-top:12px}

/* ---------- 文末区 ---------- */
.article-foot{margin-top:56px;padding-top:28px;border-top:1px solid var(--line)}
.foot-label{font-size:13px;color:var(--muted);margin-bottom:12px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.article-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.prev-next{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:30px}
.pn-card{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:20px 22px;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}
.pn-card:hover{border-color:var(--green);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.pn-card .pn-dir{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--muted)}
.pn-card .pn-dir svg{width:13px;height:13px}
.pn-card strong{display:block;margin-top:8px;font-family:var(--font-serif);font-size:15px;line-height:1.6;color:var(--teal)}
.pn-card.is-next{text-align:right}
.pn-card.is-next .pn-dir{justify-content:flex-end}

/* ---------- 相关推荐 ---------- */
.related{margin-top:64px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px;flex-wrap:wrap}
.section-head h2{font-family:var(--font-serif);font-size:26px;color:var(--teal);letter-spacing:-.01em}
.section-head .more{font-size:13px;color:var(--muted);display:inline-flex;align-items:center;gap:6px;transition:color .18s ease}
.section-head .more:hover{color:var(--teal)}
.section-head .more svg{width:13px;height:13px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:border-color .22s ease,transform .22s ease,box-shadow .22s ease}
.post-card:hover{border-color:var(--green);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.post-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--sand-deep)}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.post-card:hover .thumb img{transform:scale(1.04)}
.post-card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-card h3{font-family:var(--font-serif);font-size:17px;line-height:1.6;color:var(--teal);transition:color .18s ease}
.post-card p{margin:0;font-size:13px;line-height:1.75;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card .meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;font-size:12px;color:var(--muted)}

/* ---------- 收尾 CTA ---------- */
.cta-band{background:var(--teal);color:#EFEDE6;margin-top:80px;padding:64px 0;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;background:rgba(23,163,138,.16)}
.cta-band .container{position:relative;z-index:1}
.cta-band h2{font-family:var(--font-serif);font-size:32px;line-height:1.45;color:#fff;margin-bottom:14px;max-width:720px}
.cta-band p{margin:0 0 26px;max-width:600px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.76)}

/* ---------- 浮动操作 ---------- */
.float-cta{position:fixed;right:24px;bottom:28px;z-index:50;display:flex;flex-direction:column;align-items:center;gap:12px}
.float-cta .btn{border-radius:999px;padding:0 20px;box-shadow:var(--shadow-2)}
.to-top{width:44px;height:44px;display:grid;place-items:center;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--teal);box-shadow:var(--shadow-1);transition:transform .18s ease,border-color .18s ease,color .18s ease}
.to-top:hover{transform:translateY(-2px);border-color:var(--green);color:var(--green)}
.to-top svg{width:16px;height:16px}
.mobile-bar{display:none}

/* ---------- 页脚 ---------- */
.site-footer{background:#F1EEE7;border-top:1px solid var(--line);padding:56px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:13px;line-height:1.85;color:var(--muted);margin:0;max-width:340px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--teal);margin-bottom:14px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col span{display:inline-block;font-size:13px;color:var(--muted);transition:color .18s ease,transform .18s ease}
.footer-col a:hover{color:var(--teal);transform:translateX(2px)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:40px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}
.reveal.in-view{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .article-layout{gap:44px}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .header-top{gap:16px}
  .trend-strip{max-width:38%}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .article-aside{display:none}
  .toc-mobile{display:block}
  .article-title{font-size:30px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  html{scroll-padding-top:80px}
  .container{padding:0 20px}
  .header-top{padding-top:12px;padding-bottom:10px;gap:12px}
  .search-box,.hot-words,.header-cta,.header-bottom{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .brand-text{font-size:17px}
  .article-title{font-size:26px;line-height:1.45}
  .article-hero{padding-bottom:24px}
  .article-layout{padding-top:28px}
  .article-body{font-size:15.5px;line-height:1.9}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:18px}
  .article-body table{font-size:13px;display:block;overflow-x:auto;white-space:nowrap}
  .prev-next{grid-template-columns:1fr}
  .pn-card.is-next{text-align:left}
  .pn-card.is-next .pn-dir{justify-content:flex-start}
  .card-grid{grid-template-columns:1fr}
  .cta-band{padding:48px 0;margin-top:56px}
  .cta-band h2{font-size:25px}
  .float-cta{display:none}
  .mobile-bar{
    display:flex;align-items:center;gap:12px;
    position:fixed;left:0;right:0;bottom:0;z-index:55;
    padding:8px 16px calc(8px + env(safe-area-inset-bottom));
    background:#fff;border-top:1px solid var(--line);
  }
  .mobile-bar .btn{flex:1 1 70%}
  .mobile-bar .to-top{flex:0 0 44px;width:44px;height:44px;position:static;box-shadow:none}
  .site-footer{padding-bottom:88px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:520px){
  .article-title{font-size:23px}
  .article-meta{font-size:12px;gap:12px}
  .article-foot{margin-top:40px}
  .section-head h2{font-size:22px}
  .footer-bottom{font-size:12px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: category2 */
:root{
  --ink:#0C1F1E;
  --ink-2:#0E3B3A;
  --green:#17A38A;
  --green-deep:#0F7A68;
  --coral:#E4572E;
  --coral-deep:#B8431F;
  --sand:#F7F5F0;
  --card:#FFFFFF;
  --line:#E2DCD0;
  --muted:#6B7674;
  --danger:#C0392B;
  --r-card:6px;
  --r-btn:4px;
  --shadow-1:0 1px 2px rgba(12,31,30,.05);
  --shadow-2:0 14px 34px -14px rgba(12,31,30,.20);
  --container:1200px;
  --pad:40px;
  --section:96px;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:600;letter-spacing:-.01em;color:var(--ink);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
input,button,select{font-size:inherit;}
:focus-visible{outline:2px solid var(--green);outline-offset:3px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--pad);
}
.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--ink-2);color:#fff;
  padding:10px 18px;border-radius:var(--r-btn);z-index:999;
}
.skip-link:focus{left:16px;top:12px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,border-color .18s ease,box-shadow .18s ease,color .18s ease;
}
.btn-primary{background:var(--coral);color:#fff;box-shadow:0 8px 20px -14px rgba(228,87,46,.9);}
.btn-primary:hover{background:#ee6640;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--ink-2);color:var(--ink-2);}
.btn-ghost:hover{background:rgba(14,59,58,.06);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--ink-2);font-weight:500;
  position:relative;
}
.link-more::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;background:var(--green);
  transition:width .18s ease;
}
.link-more:hover::after{width:100%;}
.link-more:hover{color:var(--green-deep);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:var(--sand);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 12px -8px rgba(12,31,30,.55);}
.header-top-inner{
  display:flex;align-items:center;gap:24px;
  padding-top:14px;padding-bottom:14px;
  transition:padding .2s ease;
}
.site-header.is-scrolled .header-top-inner{padding-top:8px;padding-bottom:8px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:var(--r-card);
  background:var(--ink-2);color:#F7F5F0;flex-shrink:0;
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{
  font-family:var(--serif);font-weight:700;font-size:17px;letter-spacing:.01em;color:var(--ink-2);
  white-space:nowrap;
}
.nav-search{
  position:relative;flex:1;max-width:340px;display:flex;align-items:center;
}
.nav-search svg{
  position:absolute;left:12px;width:16px;height:16px;color:var(--muted);pointer-events:none;
}
.nav-search input{
  width:100%;height:40px;padding:0 14px 0 36px;
  border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;color:var(--ink);font-size:14px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.nav-search input::placeholder{color:#9AA3A0;font-size:13px;}
.nav-search input:focus{
  outline:none;border-color:var(--green);box-shadow:0 2px 0 0 var(--green);
}
.header-tools{display:flex;align-items:center;gap:14px;margin-left:auto;flex-shrink:0;}
.hot{
  font-size:13px;color:var(--coral-deep);background:rgba(228,87,46,.12);
  padding:3px 9px;border-radius:2px;white-space:nowrap;line-height:1.6;
}
.hot:hover{background:rgba(228,87,46,.2);}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--ink-2);
  cursor:pointer;flex-shrink:0;
}
.nav-toggle svg{width:20px;height:20px;}
.header-nav{border-top:1px solid var(--line);}
.header-nav-inner{
  display:flex;align-items:center;gap:28px;
  min-height:48px;padding-top:4px;padding-bottom:4px;
}
.main-nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap;}
.main-nav a{
  position:relative;font-size:15px;color:var(--muted);padding:9px 12px;border-radius:var(--r-btn);
  transition:color .18s ease,background-color .18s ease;
}
.main-nav a:hover{color:var(--ink-2);background:rgba(14,59,58,.05);}
.main-nav a.is-active{color:var(--ink-2);font-weight:600;}
.main-nav a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--green);border-radius:2px;
}
.trend-bar{
  margin-left:auto;display:flex;align-items:center;gap:10px;
  font-size:13px;color:var(--muted);overflow:hidden;
}
.trend-bar .trend-label{
  font-size:12px;letter-spacing:.08em;color:var(--ink-2);font-weight:600;white-space:nowrap;
}
.trend-bar a{
  white-space:nowrap;padding:3px 10px;border:1px solid var(--line);border-radius:999px;
  background:#fff;font-size:12.5px;color:var(--muted);transition:all .18s ease;
}
.trend-bar a:hover{color:var(--green-deep);border-color:var(--green);}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:200;background:var(--sand);
  display:flex;flex-direction:column;padding:18px 20px 32px;
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform .28s ease,opacity .28s ease,visibility .28s;
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:24px;}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;color:var(--ink-2);display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.drawer-close svg{width:20px;height:20px;}
.drawer .nav-search{max-width:none;margin-bottom:22px;}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:24px;}
.drawer-nav a{
  padding:14px 4px;font-size:16px;color:var(--ink-2);border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--green-deep);font-weight:600;}
.drawer-hot{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px;}
.drawer .btn{width:100%;}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  padding:26px 0 0;font-size:13px;color:var(--muted);
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--ink-2);}
.breadcrumb .sep{color:#B9C0BD;}
.breadcrumb .current{color:var(--ink-2);}

/* ---------- 页头 ---------- */
.page-hero{
  padding:34px 0 0;
}
.hero-panel{
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
  padding:44px 0 56px;
  border-bottom:1px solid var(--line);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.1em;color:var(--green-deep);
  background:rgba(23,163,138,.12);padding:5px 12px;border-radius:2px;font-weight:600;
  margin-bottom:20px;
}
.page-hero h1{
  font-size:56px;line-height:1.25;letter-spacing:-.01em;margin-bottom:20px;
}
.page-hero h1 em{
  font-style:normal;color:var(--ink-2);
  background:linear-gradient(transparent 72%,rgba(23,163,138,.22) 0);
}
.hero-sub{
  font-size:18px;color:var(--ink-2);font-weight:500;margin-bottom:14px;line-height:1.7;
}
.hero-lead{
  font-size:15.5px;color:var(--muted);line-height:1.9;max-width:34em;margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:var(--muted);
}
.hero-meta span{display:inline-flex;align-items:center;gap:7px;}
.hero-meta i{
  width:6px;height:6px;background:var(--green);border-radius:1px;display:inline-block;
}
.hero-media{position:relative;}
.hero-media figure{
  margin:0;position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-2);
}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-media figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 16px;font-size:12.5px;color:#F2F5F3;
  background:linear-gradient(to top,rgba(12,31,30,.82),rgba(12,31,30,0));
}
.hero-chip{
  position:absolute;right:-12px;bottom:-20px;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-2);
  padding:14px 18px;display:flex;align-items:center;gap:14px;
}
.hero-chip strong{
  font-family:var(--serif);font-size:26px;color:var(--ink-2);line-height:1;
  font-variant-numeric:tabular-nums;
}
.hero-chip span{font-size:12.5px;color:var(--muted);line-height:1.5;}

/* ---------- 板块基础 ---------- */
.section{padding:var(--section) 0 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
  flex-wrap:wrap;margin-bottom:40px;
}
.section-head h2{font-size:38px;line-height:1.3;}
.section-head p{
  font-size:15px;color:var(--muted);max-width:36em;margin-top:12px;line-height:1.85;
}
.section-no{
  font-family:var(--serif);font-size:40px;color:rgba(12,31,30,.12);line-height:1;
  font-variant-numeric:tabular-nums;margin-bottom:10px;display:block;
}

/* ---------- 图文对照 2×2 ---------- */
.compare-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:24px;
}
.compare-item{
  display:grid;grid-template-columns:132px 1fr;gap:20px;align-items:start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-1);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.compare-item:hover{
  border-color:var(--green);transform:translateY(-2px);box-shadow:var(--shadow-2);
}
.compare-item .thumb{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:#F1EEE6;
}
.compare-item .thumb img{width:100%;aspect-ratio:1/1;object-fit:cover;}
.compare-item h3{
  font-size:19px;line-height:1.5;margin-bottom:8px;
  transition:color .18s ease;
}
.compare-item:hover h3{color:var(--green-deep);}
.compare-item p{font-size:14.5px;color:var(--muted);line-height:1.8;margin-bottom:12px;}
.compare-item .tag{
  display:inline-block;font-size:12px;color:var(--green-deep);
  background:rgba(23,163,138,.12);padding:3px 9px;border-radius:2px;margin-bottom:10px;
}

/* ---------- 对比表 ---------- */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--card);
  overflow-x:auto;box-shadow:var(--shadow-1);
}
table.compare-table{
  width:100%;border-collapse:collapse;min-width:760px;font-size:14.5px;
}
table.compare-table thead th{
  text-align:left;font-family:var(--sans);font-weight:600;font-size:13px;
  letter-spacing:.04em;color:var(--ink-2);padding:16px 20px;
  background:rgba(14,59,58,.045);border-bottom:1px solid var(--line);white-space:nowrap;
}
table.compare-table tbody td{
  padding:16px 20px;border-bottom:1px solid var(--line);color:var(--muted);vertical-align:top;line-height:1.75;
}
table.compare-table tbody tr:nth-child(even) td{background:rgba(247,245,240,.6);}
table.compare-table tbody tr:last-child td{border-bottom:none;}
table.compare-table tbody tr:hover td{background:rgba(23,163,138,.05);}
table.compare-table td:first-child{color:var(--ink);font-weight:500;}
.level{
  display:inline-block;font-size:12px;padding:2px 9px;border-radius:2px;white-space:nowrap;
}
.level-easy{background:rgba(23,163,138,.12);color:var(--green-deep);}
.level-mid{background:rgba(228,87,46,.12);color:var(--coral-deep);}
.level-hard{background:rgba(12,31,30,.07);color:var(--ink-2);}
.table-note{font-size:13px;color:var(--muted);margin-top:14px;}

/* ---------- 图文说明带 ---------- */
.band{
  margin-top:var(--section);
  background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.band-inner{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center;
  padding:64px 0;
}
.band-inner figure{margin:0;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);}
.band-inner img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.band-inner h2{font-size:34px;line-height:1.35;margin-bottom:16px;}
.band-inner p{font-size:15px;color:var(--muted);line-height:1.9;margin-bottom:22px;}
.check-list li{
  display:flex;gap:12px;font-size:14.5px;color:var(--ink);padding:9px 0;
  border-bottom:1px dashed var(--line);line-height:1.75;
}
.check-list li:last-child{border-bottom:none;}
.check-list i{
  width:6px;height:6px;background:var(--green);border-radius:1px;flex-shrink:0;margin-top:11px;
}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:3fr 9fr;gap:48px;align-items:start;}
.faq-side h2{font-size:34px;line-height:1.35;margin-bottom:14px;}
.faq-side p{font-size:14.5px;color:var(--muted);line-height:1.9;}
.faq-side .btn{margin-top:22px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:16px;
  padding:22px 4px;font-size:17px;font-weight:500;color:var(--ink);line-height:1.65;
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--green-deep);}
.faq-item summary .idx{
  font-family:var(--serif);font-size:14px;color:rgba(12,31,30,.32);
  font-variant-numeric:tabular-nums;padding-top:3px;flex-shrink:0;width:26px;
}
.faq-item summary .plus{
  margin-left:auto;flex-shrink:0;width:22px;height:22px;position:relative;margin-top:4px;
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink-2);
  transition:transform .2s ease,background-color .2s ease;
}
.faq-item summary .plus::before{width:13px;height:1.5px;transform:translate(-50%,-50%);}
.faq-item summary .plus::after{width:1.5px;height:13px;transform:translate(-50%,-50%);}
.faq-item[open] summary{color:var(--ink-2);}
.faq-item[open] summary .plus::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-item[open] summary .plus::before{background:var(--green);}
.faq-body{
  padding:0 4px 24px 46px;font-size:15px;color:var(--muted);line-height:1.9;
}
.faq-body p+p{margin-top:10px;}

/* ---------- 信息卡 2:1:1 ---------- */
.info-cards{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px;align-items:stretch;}
.info-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow-1);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  display:flex;flex-direction:column;
}
.info-card:hover{border-color:var(--green);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.info-card .card-tag{
  display:inline-block;align-self:flex-start;font-size:12px;color:var(--coral-deep);
  background:rgba(228,87,46,.12);padding:3px 9px;border-radius:2px;margin-bottom:14px;
}
.info-card h3{font-size:20px;line-height:1.5;margin-bottom:10px;}
.info-card p{font-size:14.5px;color:var(--muted);line-height:1.85;margin-bottom:16px;}
.info-card .num-list{margin-bottom:16px;}
.info-card .num-list li{
  display:flex;gap:10px;font-size:14px;color:var(--ink);padding:7px 0;line-height:1.7;
}
.info-card .num-list li b{
  font-family:var(--serif);color:var(--green-deep);font-size:13px;flex-shrink:0;
  font-variant-numeric:tabular-nums;padding-top:2px;
}
.info-card .link-more{margin-top:auto;}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:var(--section);background:var(--ink-2);color:#EEF3F1;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
  padding:64px 0;
}
.cta-inner h2{
  color:#fff;font-size:36px;line-height:1.35;max-width:22em;
}
.cta-inner p{
  color:rgba(238,243,241,.72);font-size:15px;margin-top:12px;max-width:34em;line-height:1.85;
}
.cta-inner .btn-primary{flex-shrink:0;}
.back-home{
  padding:28px 0 0;font-size:14px;color:var(--muted);
}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:64px;border-top:1px solid var(--line);background:var(--sand);
  padding:56px 0 28px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:13.5px;color:var(--muted);line-height:1.9;max-width:24em;}
.footer-col h4{
  font-family:var(--sans);font-size:14px;font-weight:600;color:var(--ink-2);margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a,
.footer-col ul li span{
  font-size:13px;color:var(--muted);line-height:1.7;display:inline-block;
  transition:color .18s ease,transform .18s ease;
}
.footer-col ul li a:hover{color:var(--ink);transform:translateX(2px);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:28px;z-index:110;
  display:flex;flex-direction:column;gap:12px;align-items:flex-end;
}
.float-cta .to-top{
  width:46px;height:46px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--ink-2);display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-2);cursor:pointer;opacity:0;visibility:hidden;
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
}
.float-cta .to-top.is-show{opacity:1;visibility:visible;}
.float-cta .to-top:hover{transform:translateY(-2px);border-color:var(--green);}
.float-cta .to-top svg{width:18px;height:18px;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s ease;}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  :root{--pad:32px;--section:80px;}
  .page-hero h1{font-size:46px;}
  .hero-panel{gap:40px;}
  .header-tools .hot:nth-child(2){display:none;}
  .trend-bar a:nth-child(n+4){display:none;}
}
@media (max-width:1024px){
  :root{--pad:24px;--section:72px;}
  .header-top-inner{flex-wrap:wrap;row-gap:12px;}
  .nav-search{order:3;max-width:none;flex:1 1 100%;}
  .header-tools{margin-left:auto;}
  .trend-bar{display:none;}
  .hero-panel{grid-template-columns:1fr;gap:36px;padding:32px 0 44px;}
  .page-hero h1{font-size:40px;}
  .compare-grid{gap:18px;}
  .compare-item{grid-template-columns:110px 1fr;padding:18px;}
  .band-inner{grid-template-columns:1fr;gap:32px;padding:48px 0;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .info-cards{grid-template-columns:1fr 1fr;}
  .info-card:first-child{grid-column:1 / -1;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section-head h2{font-size:32px;}
  .cta-inner h2{font-size:30px;}
}
@media (max-width:768px){
  :root{--pad:20px;--section:56px;}
  body{font-size:15px;}
  .main-nav{display:none;}
  .header-nav{display:none;}
  .nav-toggle{display:flex;}
  .header-tools .hot{display:none;}
  .header-tools .btn{display:none;}
  .page-hero h1{font-size:32px;line-height:1.32;}
  .hero-sub{font-size:16px;}
  .hero-lead{font-size:15px;}
  .hero-media figcaption{font-size:12px;padding:12px;}
  .hero-chip{position:static;margin-top:14px;right:auto;bottom:auto;justify-content:flex-start;}
  .compare-grid{grid-template-columns:1fr;}
  .compare-item{grid-template-columns:1fr;gap:14px;}
  .compare-item .thumb img{aspect-ratio:16/9;}
  .section-head h2{font-size:27px;}
  .section-no{font-size:32px;}
  .band-inner h2{font-size:26px;}
  .faq-side h2{font-size:27px;}
  .faq-item summary{font-size:16px;padding:18px 2px;gap:10px;}
  .faq-body{padding-left:36px;font-size:14.5px;}
  .info-cards{grid-template-columns:1fr;}
  .info-card{padding:22px;}
  .cta-inner{padding:44px 0;gap:24px;}
  .cta-inner h2{font-size:25px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .site-footer{padding:40px 0 24px;}
  .float-cta{
    right:16px;left:16px;bottom:0;flex-direction:row;align-items:center;
    padding:10px 0 calc(10px + env(safe-area-inset-bottom));
    background:rgba(247,245,240,.96);border-top:1px solid var(--line);
  }
  .float-cta .btn{flex:1;}
  .float-cta .to-top{width:44px;height:44px;flex:0 0 44px;opacity:1;visibility:visible;}
  body{padding-bottom:76px;}
}
@media (max-width:520px){
  .page-hero h1{font-size:27px;}
  .brand-text{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .breadcrumb{font-size:12px;}
  .table-wrap{border-radius:var(--r-card);}
  table.compare-table{min-width:640px;font-size:13.5px;}
  table.compare-table thead th,
  table.compare-table tbody td{padding:13px 14px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}