/* roulang page: index */
:root{
  --ink:#1E3A34;
  --ink-dark:#142823;
  --ink-08:rgba(30,58,52,.08);
  --ink-10:rgba(30,58,52,.10);
  --ink-30:rgba(30,58,52,.30);
  --orange:#C05B2A;
  --orange-dark:#A84A1F;
  --orange-12:rgba(192,91,42,.12);
  --bamboo:#4C7A6A;
  --bamboo-12:rgba(76,122,106,.12);
  --bg:#F7F5F1;
  --sand:#EFEAE1;
  --white:#FFFFFF;
  --dark:#12211D;
  --t1:#1A1C1B;
  --t2:#5A625F;
  --t3:#8C918E;
  --line:#DED8CD;
  --r-card:16px;
  --r-img:12px;
  --sh1:0 1px 2px rgba(20,35,30,.06);
  --sh2:0 14px 34px -20px rgba(20,35,30,.30);
  --sh3:0 20px 44px -22px rgba(20,35,30,.40);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:68px;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:92px}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none}
button{font-family:var(--sans)}
h1,h2,h3,h4{font-family:var(--serif);color:var(--t1);margin:0;font-weight:700}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.18;letter-spacing:-.02em}
h2{font-size:clamp(24px,2.8vw,34px);line-height:1.25}
h3{font-size:21px;font-weight:600;line-height:1.4}
h4{font-size:17px;font-weight:600;line-height:1.5}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
@media (min-width:1400px){.container{max-width:1240px}}
@media (max-width:575px){.container{padding-left:18px;padding-right:18px}}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:6px}
::selection{background:var(--orange-12);color:var(--ink-dark)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,241,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom-color:var(--line);
  box-shadow:var(--sh1);
}
.nav-wrap{
  max-width:1200px;margin:0 auto;padding:0 24px;height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  transition:height .28s var(--ease);
}
@media (min-width:1400px){.nav-wrap{max-width:1240px}}
@media (max-width:991px){.nav-wrap{height:60px;padding:0 18px}}
.site-header.is-scrolled .nav-wrap{height:58px}
.nav-left{display:flex;align-items:center;gap:36px;min-width:0}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:24px;height:24px;flex:0 0 24px;color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;
  transition:color .25s var(--ease),transform .25s var(--ease);
}
.brand-mark svg{width:24px;height:24px;display:block}
.brand:hover .brand-mark{color:var(--orange);transform:translateY(-1px)}
.brand-name{font-family:var(--serif);font-size:18px;font-weight:700;letter-spacing:.01em;color:var(--ink);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--t1);
  padding:6px 0;white-space:nowrap;transition:color .22s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--orange);transform:scaleX(0);transform-origin:left;
  transition:transform .26s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:3px;height:16px;background:var(--orange);border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:999px;border:1px solid transparent;background:transparent;
  color:var(--ink);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.icon-btn:hover{background:var(--ink-08);color:var(--ink-dark)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;border:1px solid transparent;
  font-size:17px;font-weight:600;line-height:1;cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.btn i{font-size:15px}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px -14px rgba(192,91,42,.85)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;border-color:var(--ink-30);color:var(--ink)}
.btn-ghost:hover{background:var(--ink-08);color:var(--ink);transform:translateY(-2px)}
.btn-ghost:active{transform:scale(.98)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px)}
.btn-outline-light:active{transform:scale(.98)}
.btn-nav{height:40px;padding:0 22px;font-size:15px}
.btn-block{width:100%}
.search-panel{
  position:absolute;left:0;right:0;top:calc(100% + 8px);
  max-width:1200px;margin:0 auto;padding:0 24px;
}
.search-inner{
  background:var(--white);border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--sh2);padding:20px;transform:translateY(8px);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.search-panel.is-open .search-inner{opacity:1;visibility:visible;transform:translateY(0)}
.search-label{display:block;font-size:13px;color:var(--t3);margin-bottom:8px}
.search-input-wrap{position:relative;display:flex;align-items:center}
.search-input-wrap>i{position:absolute;left:16px;color:var(--t3);font-size:15px}
.search-input{
  width:100%;height:48px;border-radius:10px;border:1px solid var(--line);
  padding:0 44px 0 44px;font-size:16px;color:var(--t1);background:var(--bg);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.search-input:focus{outline:none;border-color:var(--ink);background:#fff;box-shadow:0 0 0 3px var(--orange-12)}
.search-clear{
  position:absolute;right:8px;width:32px;height:32px;border:none;background:transparent;
  color:var(--t3);border-radius:999px;cursor:pointer;transition:color .2s var(--ease),background .2s var(--ease);
}
.search-clear:hover{background:var(--ink-08);color:var(--ink)}
.search-hot{margin-top:14px;font-size:14px;color:var(--t3);display:flex;flex-wrap:wrap;gap:14px}
.search-hot a{
  color:var(--ink);background-image:linear-gradient(currentColor,currentColor);
  background-size:0 1px;background-position:0 100%;background-repeat:no-repeat;
  transition:background-size .28s var(--ease),color .22s var(--ease);
}
.search-hot a:hover{color:var(--orange);background-size:100% 1px}
.menu-toggle{display:none}
.drawer-extra{display:none}
@media (max-width:991px){
  .nav-links{
    position:fixed;inset:0;z-index:1040;background:var(--bg);
    flex-direction:column;align-items:stretch;gap:0;
    padding:80px 24px 32px;transform:translateX(100%);
    transition:transform .3s var(--ease);overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-link{
    width:100%;height:44px;display:flex;align-items:center;
    font-size:17px;border-bottom:1px solid var(--line);padding:0;
  }
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--orange);font-weight:600}
  .nav-link.is-active::before{display:none}
  .menu-toggle{display:inline-flex}
  .btn-nav{display:none}
  .drawer-extra{
    display:flex;flex-direction:column;gap:14px;margin-top:auto;padding-top:32px;
  }
  .search-panel{position:static;padding:0;margin-top:16px}
  .search-inner{box-shadow:none;transform:none}
}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding-top:100px;padding-bottom:104px;
  background:linear-gradient(180deg,#F7F5F1 0%,#EFEAE1 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(620px 340px at 82% 6%,rgba(30,58,52,.10),transparent 72%),
             radial-gradient(420px 260px at 6% 88%,rgba(192,91,42,.08),transparent 70%);
}
.hero .container{position:relative;z-index:1}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:11px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--bamboo);font-weight:600;margin-bottom:20px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--orange);border-radius:2px}
.hero h1{max-width:15em}
.hero-sub{
  margin-top:22px;font-size:clamp(17px,2vw,20px);line-height:1.7;
  color:var(--ink);font-weight:500;max-width:30em;
}
.hero-text{margin-top:16px;font-size:16.5px;color:var(--t2);max-width:32em}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px 44px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.stat{display:flex;flex-direction:column;gap:4px}
.stat-num{font-family:var(--sans);font-size:22px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.stat-label{font-size:13px;color:var(--t3)}
.hero-visual{position:relative;padding-right:56px}
.hero-figure{
  margin:0;border-radius:var(--r-card);overflow:hidden;background:var(--sand);
  box-shadow:var(--sh2);
}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s var(--ease)}
.hero-figure:hover img{transform:scale(1.03)}
.hero-float{
  position:absolute;right:0;bottom:-34px;width:52%;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-img);
  box-shadow:var(--sh3);overflow:hidden;
  animation:floatIn .8s var(--ease) both .2s;
}
.hero-float img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-float-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 14px}
.hero-float-meta strong{font-size:14px;font-weight:600;color:var(--ink)}
.hero-float-meta span{font-size:12.5px;color:var(--t3);font-variant-numeric:tabular-nums}
@keyframes floatIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@media (max-width:991px){
  .hero{padding-top:88px;padding-bottom:88px}
  .hero-visual{padding-right:0;margin-top:56px}
  .hero-float{position:relative;right:auto;bottom:auto;width:100%;margin-top:-28px;animation:none}
  .hero-stats{gap:16px 32px}
}
@media (max-width:575px){
  .hero{padding-top:80px;padding-bottom:64px}
  .hero-cta .btn{width:100%}
  .hero-stats{gap:16px 24px}
  .stat-num{font-size:20px}
}

/* ============ 通用板块 ============ */
.section{padding:104px 0}
.section-sand{background:var(--sand)}
@media (max-width:991px){.section{padding:72px 0}}
@media (max-width:575px){.section{padding:56px 0}}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:44px;
}
.section-head h2{max-width:22em}
.section-head p.head-sub{margin-top:12px;color:var(--t2);font-size:16.5px;max-width:36em}
@media (max-width:767px){
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
}
.kicker{
  display:inline-block;font-size:11px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--bamboo);font-weight:600;margin-bottom:12px;
}
.link-more{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;
  color:var(--ink);white-space:nowrap;transition:color .22s var(--ease);
}
.link-more i{font-size:13px;transition:transform .24s var(--ease)}
.link-more:hover{color:var(--orange)}
.link-more:hover i{transform:translateX(4px)}
.badge-soft{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;
  background:var(--bamboo-12);color:var(--bamboo);font-size:12.5px;font-weight:500;white-space:nowrap;
}
.mono{font-size:13px;color:var(--t3);font-variant-numeric:tabular-nums}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:18px;font-size:13px;color:var(--t3)}
.meta-row li{position:relative;padding-right:14px}
.meta-row li+li::before{
  content:"";position:absolute;left:-8px;top:50%;width:3px;height:3px;border-radius:50%;
  background:var(--line);transform:translateY(-50%);
}

/* ============ 主题封面区 ============ */
.section-feature{padding-top:88px}
.feature-grid{
  display:grid;grid-template-columns:1.5fr .9fr;gap:56px;align-items:end;
}
.feature-cover{
  margin:0;border-radius:var(--r-card);overflow:hidden;background:var(--sand);
  box-shadow:var(--sh2);
}
.feature-cover img{width:100%;aspect-ratio:21/9;object-fit:cover;transition:transform .5s var(--ease)}
.feature-cover:hover img{transform:scale(1.03)}
.feature-body{padding-bottom:16px}
.feature-body h2{margin-bottom:16px}
.feature-body>p{color:var(--t2);font-size:16.5px}
.feature-body .link-more{margin-top:26px}
@media (max-width:991px){
  .feature-grid{grid-template-columns:1fr;gap:32px}
  .feature-cover img{aspect-ratio:16/9}
}

/* ============ 合集目录 ============ */
.collection-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.collection-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;display:flex;flex-direction:column;gap:18px;
  transition:transform .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.collection-card:hover{transform:translateY(-4px);border-color:var(--ink-30);box-shadow:var(--sh3)}
.collection-thumb{
  position:relative;border-radius:var(--r-img);overflow:hidden;background:var(--sand);
}
.collection-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s var(--ease)}
.collection-card:hover .collection-thumb img{transform:scale(1.03)}
.collection-num{
  position:absolute;left:14px;top:10px;z-index:2;
  font-family:var(--serif);font-size:34px;font-weight:700;line-height:1;
  color:rgba(30,58,52,.30);font-variant-numeric:tabular-nums;
}
.collection-card h3{margin-top:2px}
.collection-card>p{color:var(--t2);font-size:15.5px;line-height:1.75}
.collection-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
}
@media (max-width:767px){.collection-grid{grid-template-columns:1fr;gap:20px}}

/* ============ 精选条目 ============ */
.pick-list{display:flex;flex-direction:column}
.pick{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  padding:44px 0;border-top:1px solid var(--line);
}
.pick:first-child{border-top:none;padding-top:0}
.pick:nth-child(even) .pick-fig{order:2}
.pick-fig{
  margin:0;border-radius:var(--r-img);overflow:hidden;background:var(--sand);
  transition:box-shadow .3s var(--ease);
}
.pick-fig img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s var(--ease)}
.pick:hover .pick-fig img{transform:scale(1.03)}
.pick:hover .pick-fig{box-shadow:var(--sh2)}
.pick-index{
  display:block;font-family:var(--serif);font-size:30px;font-weight:700;
  color:rgba(30,58,52,.28);font-variant-numeric:tabular-nums;line-height:1;margin-bottom:14px;
}
.pick-body h3{font-size:24px;transition:color .24s var(--ease)}
.pick:hover .pick-body h3{color:var(--ink-dark)}
.pick-body>p{margin-top:14px;color:var(--t2);font-size:16px}
@media (max-width:991px){
  .pick{grid-template-columns:1fr;gap:24px;padding:34px 0}
  .pick:nth-child(even) .pick-fig{order:0}
  .pick-body h3{font-size:21px}
}

/* ============ 最新信息 ============ */
.home-news-list{display:flex;flex-direction:column;gap:16px}
.news-item{
  display:flex;align-items:center;gap:22px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 22px 18px 18px;
  transition:background .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease),transform .26s var(--ease);
}
.news-item:hover{
  background:var(--sand);border-color:var(--ink-30);box-shadow:var(--sh2);transform:translateY(-2px);
}
.news-thumb{
  flex:0 0 120px;width:120px;aspect-ratio:16/9;border-radius:var(--r-img);
  overflow:hidden;background:var(--sand);
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.news-item:hover .news-thumb img{transform:scale(1.04)}
.news-main{min-width:0;flex:1 1 auto}
.news-main h3{
  font-size:18px;font-weight:600;font-family:var(--sans);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .24s var(--ease);
}
.news-item:hover .news-main h3{color:var(--ink)}
.news-sum{
  margin-top:8px;color:var(--t2);font-size:15px;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:14px;margin-top:12px}
.news-arrow{
  flex:0 0 auto;width:34px;height:34px;border-radius:999px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink);background:var(--ink-08);
  transition:transform .26s var(--ease),background .26s var(--ease),color .26s var(--ease);
}
.news-item:hover .news-arrow{transform:translateX(4px);background:var(--orange);color:#fff}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:220px;padding:64px 24px;text-align:center;
  background:var(--white);border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-state i{font-size:40px;color:var(--t3)}
.empty-state p{color:var(--t2);font-size:16px}
@media (max-width:767px){
  .news-item{gap:16px;padding:16px;flex-wrap:wrap}
  .news-thumb{flex:0 0 92px;width:92px}
  .news-arrow{display:none}
  .news-main h3{font-size:17px;-webkit-line-clamp:2}
}

/* ============ 数据条 ============ */
.section-stats{padding:0 0 104px}
.stats-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--sand);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;
}
.stats-cell{
  padding:30px 26px;display:flex;flex-direction:column;gap:6px;
  border-left:1px solid var(--line);
}
.stats-cell:first-child{border-left:none}
.stats-num{font-size:26px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:-.01em;line-height:1.2}
.stats-text{font-size:14px;color:var(--t2)}
@media (max-width:991px){
  .section-stats{padding-bottom:72px}
  .stats-bar{grid-template-columns:repeat(2,1fr)}
  .stats-cell:nth-child(3){border-left:none}
  .stats-cell:nth-child(n+3){border-top:1px solid var(--line)}
}
@media (max-width:575px){
  .section-stats{padding-bottom:56px}
  .stats-cell{padding:22px 18px}
  .stats-num{font-size:22px}
}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:300px 1fr;gap:56px;align-items:start}
.faq-intro h2{margin-bottom:16px}
.faq-intro p{color:var(--t2);font-size:16px}
.faq-intro .link-more{margin-top:22px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);transition:background .25s var(--ease)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:60px;padding:16px 4px 16px 16px;border:none;background:transparent;
  text-align:left;cursor:pointer;font-size:17px;font-weight:600;color:var(--t1);
  border-left:3px solid transparent;
  transition:color .22s var(--ease),border-color .25s var(--ease),padding .25s var(--ease);
}
.faq-q:hover{color:var(--ink-dark)}
.faq-item.is-open .faq-q{border-left-color:var(--orange);color:var(--ink-dark)}
.faq-icon{position:relative;flex:0 0 16px;width:16px;height:16px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink);transition:transform .25s var(--ease),background .25s var(--ease);
}
.faq-icon::before{left:0;top:7.25px;width:16px;height:1.5px}
.faq-icon::after{left:7.25px;top:0;width:1.5px;height:16px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0)}
.faq-item.is-open .faq-icon::before{background:var(--orange)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s var(--ease)}
.faq-a p{padding:0 40px 22px 16px;font-size:15.5px;line-height:1.8;color:var(--t2)}
@media (max-width:991px){
  .faq-layout{grid-template-columns:1fr;gap:28px}
}

/* ============ 收藏 / 分享 ============ */
.cta-dark{
  background:var(--dark);border-radius:20px;padding:64px 56px;
  display:flex;align-items:center;justify-content:space-between;gap:48px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-dark::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(192,91,42,.22),transparent 68%);
  pointer-events:none;
}
.cta-text{position:relative;z-index:1;max-width:34em}
.cta-text h2{color:#fff;margin-bottom:14px}
.cta-text p{color:rgba(255,255,255,.72);font-size:16.5px}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:12px}
.cta-actions .btn{height:46px;padding:0 22px;font-size:15.5px}
#favBtn.is-active{background:#fff;color:var(--dark);border-color:#fff}
@media (max-width:991px){
  .cta-dark{padding:44px 28px;gap:28px}
}
@media (max-width:575px){
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%;width:100%}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--sand);border-top:1px solid var(--line);padding-top:72px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px;
  padding-bottom:56px;
}
.footer-brand .brand{margin-bottom:18px}
.brand-footer .brand-name{font-size:19px}
.footer-brand p{color:var(--t2);font-size:15px;max-width:30em}
.social{display:flex;gap:12px;margin-top:22px}
.social a{
  width:36px;height:36px;border-radius:999px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink);
  transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.social a:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-2px)}
.footer-col h4{font-family:var(--sans);font-size:15px;font-weight:600;color:var(--ink);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a,.footer-col li{font-size:15px;color:var(--t2);line-height:1.6}
.footer-col a{transition:color .22s var(--ease)}
.footer-col a:hover{color:var(--orange)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:24px 0 32px;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--t3);
}
@media (max-width:991px){
  .site-footer{padding-top:56px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;padding-bottom:40px}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
}

/* ============ 返回顶部 ============ */
#backTop{
  position:fixed;right:24px;bottom:32px;width:44px;height:44px;border-radius:999px;
  border:1px solid var(--line);background:var(--bg);color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:var(--sh2);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s,background .24s var(--ease),color .24s var(--ease);
  z-index:1020;
}
#backTop.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
#backTop:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
@media (max-width:575px){#backTop{right:16px;bottom:20px}}

/* ============ 入场动画 ============ */
.js .reveal{opacity:0;transform:translateY(12px)}
.js .reveal.is-in{
  opacity:1;transform:none;
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .js .reveal{opacity:1 !important;transform:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --ink:#1E3A34;
  --ink-deep:#142823;
  --ink-10:rgba(30,58,52,.10);
  --ink-16:rgba(30,58,52,.16);
  --orange:#C05B2A;
  --orange-deep:#A84A1F;
  --orange-12:rgba(192,91,42,.12);
  --bamboo:#4C7A6A;
  --bg:#F7F5F1;
  --sand:#EFEAE1;
  --card:#FFFFFF;
  --dark:#12211D;
  --t1:#1A1C1B;
  --t2:#5A625F;
  --t3:#8C918E;
  --line:#DED8CD;
  --r-card:16px;
  --r-img:12px;
  --r-input:10px;
  --r-pill:999px;
  --sh1:0 1px 2px rgba(20,35,30,.06);
  --sh2:0 14px 34px -20px rgba(20,35,30,.30);
  --sh3:0 20px 44px -22px rgba(20,35,30,.40);
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--t1);
  background:var(--bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .28s var(--ease);}
a:hover{color:var(--orange);}
button,input{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--serif);color:var(--t1);}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px;}

.container{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  width:100%;
}
@media (min-width:1400px){
  .container{max-width:1240px;}
}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 28px;
  border-radius:var(--r-pill);
  font-size:17px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease),transform .26s var(--ease),box-shadow .26s var(--ease);
  white-space:nowrap;
}
.btn:active{transform:scale(.98);}
.btn-primary{background:var(--orange);color:#fff;box-shadow:var(--sh1);}
.btn-primary:hover{background:var(--orange-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh2);}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-outline:hover{background:var(--ink-10);color:var(--ink);transform:translateY(-2px);}
.btn-ghost-white{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.btn-ghost-white:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-white{background:#fff;color:var(--dark);}
.btn-white:hover{background:var(--sand);color:var(--dark);transform:translateY(-2px);}
.btn-sm{height:40px;font-size:15px;padding:0 20px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.45;pointer-events:none;transform:none;}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
}
.link-arrow i{transition:transform .26s var(--ease);font-size:13px;}
.link-arrow:hover{color:var(--orange);}
.link-arrow:hover i{transform:translateX(4px);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1040;
  background:rgba(247,245,241,.94);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .28s var(--ease),background-color .28s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh1);background:rgba(247,245,241,.97);}
.nav-wrap{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  transition:height .28s var(--ease);
}
@media (min-width:1400px){
  .nav-wrap{max-width:1240px;}
}
.site-header.is-scrolled .nav-wrap{height:58px;}
.nav-left{display:flex;align-items:center;gap:38px;min-width:0;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  flex-shrink:0;
}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:32px;height:32px;
  border-radius:10px;
  background:var(--ink);
  color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  flex-shrink:0;
  transition:background-color .28s var(--ease);
}
.brand-mark svg{width:20px;height:20px;}
.brand:hover .brand-mark{background:var(--orange);}
.brand-name{
  font-family:var(--serif);
  font-size:18px;
  font-weight:700;
  letter-spacing:.01em;
  white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--t1);
  padding:6px 0;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  background:var(--orange);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .26s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{font-weight:600;}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.icon-btn{
  width:40px;height:40px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;
  transition:border-color .26s var(--ease),color .26s var(--ease),transform .26s var(--ease),box-shadow .26s var(--ease);
}
.icon-btn:hover{border-color:var(--ink);color:var(--orange);box-shadow:var(--sh1);}
.icon-btn:active{transform:scale(.96);}
.menu-toggle{display:none;}
.btn-nav{height:40px;font-size:15px;padding:0 22px;}

.search-panel{
  position:absolute;
  top:calc(100% + 8px);
  right:24px;
  width:360px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--sh2);
  padding:18px 20px 20px;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s;
  z-index:1060;
}
.search-panel.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.search-label{display:block;font-size:13px;color:var(--t3);margin-bottom:8px;}
.search-input-wrap{
  display:flex;align-items:center;gap:10px;
  height:48px;
  border:1px solid var(--line);
  border-radius:var(--r-input);
  padding:0 14px;
  background:#fff;
  transition:border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.search-input-wrap:focus-within{border-color:var(--ink);box-shadow:0 0 0 3px var(--orange-12);}
.search-input-wrap i{color:var(--t3);font-size:14px;}
.search-input{
  border:0;outline:0;width:100%;height:100%;
  font-size:15px;color:var(--t1);background:transparent;
}
.hot-words{margin-top:12px;font-size:13px;color:var(--t3);line-height:1.9;}
.hot-words a{margin-left:10px;border-bottom:1px solid transparent;transition:border-color .26s var(--ease),color .26s var(--ease);}
.hot-words a:hover{color:var(--orange);border-bottom-color:var(--orange);}
.drawer-extra{display:none;}

/* ============ 阅读进度 ============ */
.read-progress{
  position:fixed;
  top:0;left:0;
  height:2px;
  width:0;
  background:var(--orange);
  z-index:1200;
  transition:width .1s linear;
}

/* ============ 文章头部 ============ */
.article-head{
  background:var(--bg);
  padding:36px 0 52px;
  border-bottom:1px solid var(--line);
  position:relative;
}
.article-head::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(circle at 82% 18%,var(--ink-10),transparent 46%);
  pointer-events:none;
}
.article-head .container{position:relative;z-index:1;}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;
  color:var(--t3);
  margin-bottom:26px;
}
.crumb a{color:var(--t2);}
.crumb a:hover{color:var(--orange);}
.crumb .sep{color:#c8c2b6;}
.crumb .current{color:var(--t3);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.h-rule{width:44px;height:2px;background:var(--orange);margin-bottom:18px;}
.article-title{
  font-size:clamp(30px,4.4vw,52px);
  font-weight:700;
  line-height:1.18;
  letter-spacing:-.02em;
  margin:0 0 22px;
  max-width:920px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;
  font-size:13px;color:var(--t3);
  font-variant-numeric:tabular-nums;
}
.meta-badge{
  display:inline-flex;align-items:center;
  height:28px;padding:0 14px;
  border-radius:var(--r-pill);
  background:rgba(76,122,106,.12);
  color:var(--bamboo);
  font-size:12.5px;
  font-weight:600;
}
.meta-item{display:inline-flex;align-items:center;gap:6px;}
.meta-item i{font-size:12px;color:var(--t3);}

/* ============ 正文布局 ============ */
.article-main{padding:64px 0 0;}
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:48px;
  align-items:start;
}
.article-content{
  max-width:760px;
  font-size:17px;
  line-height:1.85;
  color:var(--t1);
  word-break:normal;
  overflow-wrap:anywhere;
}
.article-content > *:first-child{margin-top:0;}
.article-content p{margin:0 0 1.15em;}
.article-content h2{
  font-size:clamp(24px,2.8vw,34px);
  font-weight:700;
  line-height:1.25;
  margin:1.6em 0 .6em;
  padding-left:16px;
  border-left:3px solid var(--orange);
}
.article-content h3{
  font-size:21px;
  font-weight:600;
  letter-spacing:-.01em;
  margin:1.4em 0 .5em;
  color:var(--ink);
}
.article-content h4{font-size:17px;font-weight:600;margin:1.2em 0 .4em;}
.article-content ul,.article-content ol{padding-left:1.35em;margin:0 0 1.2em;line-height:1.9;}
.article-content ul{list-style:disc;}
.article-content ol{list-style:decimal;}
.article-content li::marker{color:var(--orange);font-weight:600;}
.article-content li{margin-bottom:.35em;}
.article-content blockquote{
  margin:1.4em 0;
  background:var(--sand);
  border-left:3px solid var(--ink);
  border-radius:0 var(--r-img) var(--r-img) 0;
  padding:20px 22px;
  color:var(--t2);
  font-size:16px;
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{
  max-width:100%;
  height:auto;
  border-radius:var(--r-img);
  margin:1.5em auto;
}
.article-content figure{margin:1.5em 0;}
.article-content figcaption{
  font-size:13px;
  color:var(--t3);
  text-align:center;
  margin-top:10px;
}
.article-content table{
  width:100%;
  border-collapse:collapse;
  margin:1.5em 0;
  font-size:15.5px;
  line-height:1.7;
}
.article-content th{
  background:rgba(30,58,52,.08);
  font-weight:600;
  text-align:left;
}
.article-content th,.article-content td{
  border:1px solid var(--line);
  padding:10px 14px;
}
.article-content a{
  color:var(--ink);
  background-image:linear-gradient(var(--orange),var(--orange));
  background-repeat:no-repeat;
  background-position:0 100%;
  background-size:0 1px;
  transition:background-size .28s var(--ease),color .28s var(--ease);
  padding-bottom:1px;
}
.article-content a:hover{color:var(--orange);background-size:100% 1px;}
.article-content hr{border:0;border-top:1px solid var(--line);margin:2em 0;}

.empty-state{
  background:#fff;
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  padding:64px 24px;
  text-align:center;
  box-shadow:var(--sh1);
}
.empty-state i{font-size:40px;color:var(--t3);margin-bottom:16px;display:block;}
.empty-state p{color:var(--t2);font-size:15.5px;margin:0 0 20px;}

/* ============ 侧栏 ============ */
.article-side{
  position:sticky;
  top:88px;
  display:flex;
  flex-direction:column;
  gap:20px;
  align-self:start;
}
.side-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px;
  box-shadow:var(--sh1);
}
.side-title{
  font-size:15px;
  font-weight:700;
  font-family:var(--sans);
  letter-spacing:.02em;
  color:var(--t1);
  margin:0 0 14px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
}
.side-nav li + li{margin-top:4px;}
.side-nav a{
  display:block;
  position:relative;
  padding:9px 0 9px 14px;
  font-size:14.5px;
  color:var(--t2);
}
.side-nav a::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:0;
  background:var(--orange);
  border-radius:2px;
  transition:height .26s var(--ease);
}
.side-nav a:hover{color:var(--ink);}
.side-nav a:hover::before,.side-nav a.is-current::before{height:18px;}
.side-nav a.is-current{color:var(--ink);font-weight:600;}
.side-facts{font-size:14px;color:var(--t2);line-height:1.9;}
.side-facts dt{color:var(--t3);font-size:13px;}
.side-facts dd{margin:0 0 12px;font-variant-numeric:tabular-nums;}
.side-facts dd:last-child{margin-bottom:0;}
.side-list li{border-top:1px solid var(--line);}
.side-list li:first-child{border-top:0;}
.side-list a{
  display:block;
  padding:12px 0;
}
.side-list .t{
  display:block;
  font-size:14.5px;
  font-weight:600;
  color:var(--t1);
  line-height:1.6;
  transition:color .26s var(--ease);
}
.side-list .d{
  display:block;
  font-size:12.5px;
  color:var(--t3);
  margin-top:4px;
  font-variant-numeric:tabular-nums;
}
.side-list a:hover .t{color:var(--orange);}

/* ============ 文末区 ============ */
.article-tail{padding:72px 0 0;}
.tag-row{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  padding-top:28px;border-top:1px solid var(--line);
}
.tag-row .label{font-size:13px;color:var(--t3);margin-right:4px;}
.tag{
  display:inline-flex;align-items:center;
  height:30px;padding:0 14px;
  border-radius:var(--r-pill);
  background:rgba(76,122,106,.10);
  color:var(--bamboo);
  font-size:12.5px;
  transition:background-color .26s var(--ease),color .26s var(--ease);
}
.tag:hover{background:var(--bamboo);color:#fff;}

.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:28px;
}
.sec-title{
  font-size:clamp(24px,2.8vw,34px);
  font-weight:700;
  line-height:1.25;
  margin:0;
}
.sec-sub{font-size:15px;color:var(--t2);margin:10px 0 0;}

.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:26px;
  padding-top:16px;
}
.rcard{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh1);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.rcard:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:rgba(30,58,52,.30);color:inherit;}
.rcard .thumb{
  aspect-ratio:4/3;
  overflow:hidden;
  background:var(--sand);
}
.rcard .thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .3s var(--ease);
}
.rcard:hover .thumb img{transform:scale(1.03);}
.rcard .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rcard h3{
  font-size:17px;
  font-weight:600;
  line-height:1.55;
  margin:0;
  color:var(--t1);
  transition:color .26s var(--ease);
}
.rcard:hover h3{color:var(--ink);}
.rcard p{
  font-size:15px;
  line-height:1.75;
  color:var(--t2);
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rcard .meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--t3);
  font-variant-numeric:tabular-nums;
}
.rcard .meta .go{display:inline-flex;align-items:center;gap:6px;color:var(--ink);font-weight:600;}
.rcard .meta .go i{transition:transform .26s var(--ease);font-size:12px;}
.rcard:hover .meta .go i{transform:translateX(4px);}

.tail-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:44px;
  padding-top:32px;
  border-top:1px solid var(--line);
}

/* ============ 收藏 / 分享 ============ */
.save-band{padding:88px 0 0;}
.save-inner{
  background:var(--dark);
  border-radius:20px;
  padding:56px 48px;
  color:#fff;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:36px;
  align-items:center;
}
.save-inner h2{
  color:#fff;
  font-size:clamp(24px,2.6vw,32px);
  font-weight:700;
  margin:0 0 12px;
}
.save-inner p{
  color:rgba(255,255,255,.72);
  font-size:15.5px;
  margin:0;
  max-width:620px;
}
.save-actions{display:flex;flex-wrap:wrap;gap:12px;}
.save-actions .btn{height:44px;font-size:15.5px;padding:0 22px;}
.is-saved{background:var(--orange) !important;border-color:var(--orange) !important;color:#fff !important;}
.is-saved i{color:#fff;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark);
  color:rgba(255,255,255,.72);
  margin-top:88px;
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.6fr) repeat(3,minmax(0,1fr));
  gap:40px;
  padding-bottom:48px;
}
.brand-footer{color:#fff;}
.brand-footer .brand-mark{background:rgba(255,255,255,.10);}
.brand-footer:hover{color:#fff;}
.brand-footer:hover .brand-mark{background:var(--orange);}
.footer-brand p{
  font-size:14.5px;
  line-height:1.8;
  color:rgba(255,255,255,.62);
  margin:16px 0 20px;
  max-width:340px;
}
.social{display:flex;gap:14px;}
.social a{
  width:36px;height:36px;
  border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.22);
  display:inline-flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.78);
  font-size:15px;
  transition:border-color .26s var(--ease),color .26s var(--ease),background-color .26s var(--ease);
}
.social a:hover{border-color:var(--orange);color:#fff;background:var(--orange);}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  font-family:var(--sans);
  margin:0 0 18px;
  letter-spacing:.02em;
}
.footer-col li{margin-bottom:12px;font-size:14.5px;color:rgba(255,255,255,.62);}
.footer-col a{color:rgba(255,255,255,.62);}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.50);
  font-variant-numeric:tabular-nums;
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;
  right:22px;bottom:26px;
  width:44px;height:44px;
  border-radius:var(--r-pill);
  background:var(--bg);
  border:1px solid var(--line);
  color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh2);
  opacity:0;visibility:hidden;
  transform:translateY(8px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s;
  z-index:1030;
  cursor:pointer;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{border-color:var(--ink);color:var(--orange);}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .article-grid{gap:36px;}
}
@media (max-width:991.98px){
  .nav-wrap{height:60px;}
  .site-header.is-scrolled .nav-wrap{height:60px;}
  .nav-left{gap:16px;}
  .nav-links{
    position:fixed;
    inset:0;
    background:var(--bg);
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:84px 24px 40px;
    transform:translateX(100%);
    transition:transform .3s var(--ease);
    overflow-y:auto;
    z-index:1050;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-link{
    display:flex;
    align-items:center;
    height:44px;
    font-size:16px;
    border-bottom:1px solid var(--line);
    padding:0;
  }
  .nav-link::after{display:none;}
  .nav-link.is-active{color:var(--orange);padding-left:12px;border-left:3px solid var(--orange);}
  .drawer-extra{display:block;margin-top:24px;}
  .drawer-extra .search-panel{
    position:static;
    opacity:1;visibility:visible;transform:none;
    box-shadow:none;
    border:1px solid var(--line);
    width:100%;
    margin-bottom:16px;
    padding:16px;
  }
  .btn-nav{display:none;}
  .menu-toggle{display:inline-flex;}
  #searchPanel{display:none;}
  .article-grid{grid-template-columns:1fr;gap:40px;}
  .article-side{position:static;top:auto;}
  .article-content{max-width:100%;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .save-inner{grid-template-columns:1fr;padding:44px 32px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:767.98px){
  .container{padding:0 18px;}
  .nav-wrap{padding:0 18px;}
  .article-head{padding:26px 0 40px;}
  .article-main{padding:44px 0 0;}
  .article-content{font-size:16.5px;}
  .related-grid{grid-template-columns:1fr;}
  .save-band{padding:64px 0 0;}
  .site-footer{margin-top:64px;padding-top:56px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-brand p{max-width:none;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .article-title{font-size:clamp(26px,7vw,34px);}
}
@media (max-width:575.98px){
  body{font-size:16px;}
  .btn{width:100%;}
  .btn-sm,.tail-actions .btn,.save-actions .btn{width:100%;}
  .save-actions{width:100%;}
  .article-content h2{font-size:24px;}
  .article-content h3{font-size:19px;}
  .save-inner{padding:34px 22px;border-radius:16px;}
  .to-top{right:14px;bottom:16px;}
  .crumb .current{max-width:100%;}
}

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

/* roulang page: category1 */
:root{
  --ink:#1E3A34;
  --ink-deep:#142823;
  --ink-08:rgba(30,58,52,.08);
  --ink-10:rgba(30,58,52,.10);
  --ink-30:rgba(30,58,52,.30);
  --orange:#C05B2A;
  --orange-deep:#A84A1F;
  --orange-12:rgba(192,91,42,.12);
  --bamboo:#4C7A6A;
  --bamboo-10:rgba(76,122,106,.10);
  --bg:#F7F5F1;
  --sand:#EFEAE1;
  --card:#FFFFFF;
  --dark:#12211D;
  --text:#1A1C1B;
  --text-2:#5A625F;
  --text-3:#8C918E;
  --line:#DED8CD;
  --r-card:16px;
  --r-img:12px;
  --r-input:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,35,30,.06);
  --sh-2:0 14px 34px -20px rgba(20,35,30,.30);
  --sh-3:0 20px 44px -22px rgba(20,35,30,.40);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","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(--font-sans);
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink-deep);margin:0}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
a{color:var(--ink);text-decoration:none;transition:color .28s var(--ease)}
a:hover{color:var(--orange)}
ul,ol{margin:0}
button{font-family:inherit}
.num,.meta-num{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
::selection{background:var(--orange-12);color:var(--ink-deep)}

.container,.container-lg,.container-md,.container-sm,.container-xl,.container-xxl{
  width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;
}
@media (min-width:1400px){
  .container,.container-lg,.container-md,.container-sm,.container-xl,.container-xxl{max-width:1240px}
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(247,245,241,.84);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:background .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,241,.94);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-1);
}
.nav-wrap{
  max-width:1200px;margin:0 auto;padding:0 24px;height:68px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  transition:height .26s var(--ease);
}
@media (min-width:1400px){.nav-wrap{max-width:1240px}}
.site-header.is-scrolled .nav-wrap{height:58px}
.nav-left{display:flex;align-items:center;gap:36px;min-width:0}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:22px;height:22px;display:inline-flex;color:var(--orange)}
.brand-mark svg{width:100%;height:100%}
.brand-name{
  font-family:var(--font-serif);font-size:18px;font-weight:700;
  letter-spacing:.01em;color:var(--ink-deep);white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 0;white-space:nowrap;
}
.nav-link:hover{color:var(--ink)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--orange);border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;cursor:pointer;
  transition:background-color .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.icon-btn:hover{background:var(--ink-08);border-color:var(--ink-30);transform:translateY(-1px)}
.icon-btn:active{transform:scale(.96)}
.menu-toggle{display:none}
.drawer-extra{display:none}

/* 搜索面板 */
.search-panel{
  position:absolute;left:0;right:0;top:100%;
  background:#fff;border:1px solid var(--line);border-top:none;
  border-radius:0 0 14px 14px;box-shadow:var(--sh-2);
  max-height:0;opacity:0;visibility:hidden;overflow:hidden;
  transition:max-height .28s var(--ease),opacity .24s var(--ease),visibility .24s var(--ease);
}
.search-panel.is-open{max-height:190px;opacity:1;visibility:visible;padding:18px 0 22px}
.search-inner{max-width:1200px;margin:0 auto;padding:0 24px}
.search-label{display:block;font-size:13px;color:var(--text-3);margin-bottom:8px}
.search-input-wrap{position:relative}
.search-input-wrap i{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--text-3);font-size:14px}
.search-input{
  width:100%;height:48px;padding:0 16px 0 44px;
  border:1px solid var(--line);border-radius:var(--r-input);
  background:var(--bg);font-size:15px;color:var(--text);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease);
}
.search-input:focus{outline:none;background:#fff;border-color:var(--ink);box-shadow:0 0 0 3px var(--ink-10)}
.search-hot{margin-top:12px;font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;gap:16px;align-items:center}
.search-hot a{color:var(--ink);border-bottom:1px solid transparent;transition:border-color .24s var(--ease),color .24s var(--ease)}
.search-hot a:hover{color:var(--orange);border-bottom-color:var(--orange)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-pill);
  font-size:17px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;text-align:center;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),opacity .22s var(--ease);
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--orange-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-ghost{background:transparent;border-color:var(--ink-30);color:var(--ink)}
.btn-ghost:hover{background:var(--ink-08);border-color:var(--ink);color:var(--ink);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0) scale(.98)}
.btn-nav{height:40px;padding:0 22px;font-size:15px}
.btn-sm{height:42px;padding:0 22px;font-size:15.5px}
.btn-block{width:100%}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;pointer-events:none}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15.5px;font-weight:600;color:var(--ink);padding:0;
  border:none;background:none;cursor:pointer;
}
.btn-text i{transition:transform .22s var(--ease)}
.btn-text:hover{color:var(--orange)}
.btn-text:hover i{transform:translateX(4px)}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;background:var(--sand);
  border-bottom:1px solid var(--line);
  padding:68px 0 76px;overflow:hidden;
}
.page-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:radial-gradient(rgba(30,58,52,.10) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 88%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 88%);
}
.page-head .container{position:relative;z-index:1}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:24px}
.crumbs a{color:var(--text-2)}
.crumbs a:hover{color:var(--orange)}
.crumbs .sep{color:var(--text-3);opacity:.6}
.crumbs .current{color:var(--text-3)}
.head-rule{width:56px;height:3px;border-radius:2px;background:var(--orange);margin-bottom:20px}
.page-head h1{
  font-size:clamp(30px,4.4vw,52px);font-weight:700;line-height:1.18;
  letter-spacing:-.02em;max-width:900px;
}
.head-lead{
  margin-top:22px;max-width:720px;font-size:17px;line-height:1.85;color:var(--text-2);
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;
  margin-top:28px;font-size:13.5px;color:var(--text-2);
}
.meta-item{display:inline-flex;align-items:center;gap:8px}
.meta-item i{color:var(--orange);font-size:12px}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--line)}
.live-dot{
  width:7px;height:7px;border-radius:50%;background:var(--orange);
  box-shadow:0 0 0 3px var(--orange-12);
}

/* ---------- 主体 ---------- */
.cat-main{padding:76px 0 92px}
.side-col{position:relative}
.toc{
  position:sticky;top:88px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 20px;box-shadow:var(--sh-1);
}
.toc-title{
  font-size:12px;letter-spacing:.18em;color:var(--text-3);
  text-transform:uppercase;margin:0 0 14px;font-weight:600;
}
.toc-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:2px}
.toc-link{
  display:block;padding:11px 14px;font-size:15px;color:var(--text-2);
  border-left:2px solid var(--line);border-radius:0 8px 8px 0;
  transition:color .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease);
}
.toc-link:hover{color:var(--ink);background:var(--sand)}
.toc-link.is-current{color:var(--ink-deep);font-weight:600;border-left-color:var(--orange);background:var(--sand)}
.toc-foot{margin-top:22px;padding-top:20px;border-top:1px solid var(--line)}
.toc-note{font-size:13px;line-height:1.7;color:var(--text-3);margin:0 0 14px}

.cat-section{padding-bottom:56px;margin-bottom:56px;border-bottom:1px solid var(--line)}
.cat-section:last-of-type{border-bottom:none;padding-bottom:0;margin-bottom:0}
.sec-no{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-serif);font-size:13px;font-weight:700;
  letter-spacing:.18em;color:var(--orange);margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.sec-no::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--orange)}
.cat-section h2{
  font-size:clamp(24px,2.8vw,34px);font-weight:700;line-height:1.25;
  letter-spacing:-.01em;margin-bottom:18px;
}
.cat-section p{font-size:17px;line-height:1.85;color:var(--text)}
.split{
  display:grid;grid-template-columns:1.05fr .95fr;gap:28px;
  align-items:center;margin:28px 0 8px;
}
.split.is-reverse .split-media{order:2}
.split-media{
  margin:0;border-radius:var(--r-img);overflow:hidden;
  background:var(--sand);box-shadow:var(--sh-1);
}
.split-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  transition:transform .34s var(--ease);
}
.split-media:hover img{transform:scale(1.03)}
.split-note{
  font-size:14px;line-height:1.75;color:var(--text-2);
  padding-left:16px;border-left:2px solid var(--bamboo);
}
.point-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:26px}
.point{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 22px 24px;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.point:hover{transform:translateY(-4px);border-color:var(--ink-30);box-shadow:var(--sh-3)}
.point-num{
  font-family:var(--font-serif);font-size:30px;font-weight:700;line-height:1;
  color:rgba(30,58,52,.26);font-variant-numeric:tabular-nums;
}
.point h3{font-size:18px;font-weight:600;margin:12px 0 8px;letter-spacing:-.01em}
.point p{font-size:15px;line-height:1.75;color:var(--text-2);margin:0}
.step-list{list-style:none;counter-reset:step;padding:0;margin:26px 0 0;border-top:1px solid var(--line)}
.step-list li{
  counter-increment:step;position:relative;
  padding:18px 0 18px 60px;border-bottom:1px solid var(--line);
  font-size:16px;line-height:1.8;color:var(--text);
}
.step-list li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:18px;
  width:36px;height:36px;border-radius:var(--r-pill);
  background:var(--ink-08);color:var(--ink);
  font-family:var(--font-serif);font-size:14px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.step-list li strong{color:var(--ink-deep);font-weight:600}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--bamboo-10);color:var(--bamboo);
  font-size:12.5px;font-weight:500;line-height:1.4;
}
.tag-time{background:transparent;color:var(--text-3);padding-left:0}

/* FAQ */
.faq-list{margin-top:8px}
.faq-list .accordion-item{
  background:transparent;border:none;border-bottom:1px solid var(--line);border-radius:0;
}
.faq-list .accordion-button{
  position:relative;width:100%;background:transparent;
  padding:22px 48px 22px 18px;border-radius:0;
  font-family:var(--font-serif);font-size:17px;font-weight:600;
  color:var(--ink-deep);line-height:1.5;box-shadow:none!important;
}
.faq-list .accordion-button:not(.collapsed){
  background:var(--sand);color:var(--ink-deep);
  box-shadow:inset 3px 0 0 var(--orange)!important;
}
.faq-list .accordion-button:focus{outline:none;box-shadow:inset 3px 0 0 var(--orange)!important}
.faq-list .accordion-button::after{
  content:"";position:absolute;right:20px;top:50%;
  width:14px;height:2px;background:var(--orange);
  transform:translateY(-50%);transition:transform .25s var(--ease);
  background-image:none;flex:none;
}
.faq-list .accordion-button::before{
  content:"";position:absolute;right:26px;top:50%;
  width:2px;height:14px;background:var(--orange);
  transform:translateY(-50%);
  transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.faq-list .accordion-button:not(.collapsed)::before{transform:translateY(-50%) scaleY(0);opacity:0}
.faq-list .accordion-body{
  padding:6px 48px 22px 18px;font-size:15.5px;line-height:1.8;color:var(--text-2);
}
.faq-list .accordion-body p{margin-bottom:.8em}

/* 相关推荐 */
.rec-list{display:grid;gap:16px;margin-top:8px}
.rec-item{
  display:flex;align-items:center;gap:18px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 22px;box-shadow:var(--sh-1);
  transition:background-color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.rec-item:hover{
  background:var(--sand);border-color:var(--ink-30);
  transform:translateY(-4px);box-shadow:var(--sh-2);
}
.rec-body{min-width:0}
.rec-item h3{font-size:17px;font-weight:600;margin:0 0 6px;color:var(--ink-deep);transition:color .24s var(--ease)}
.rec-item:hover h3{color:var(--ink)}
.rec-item p{
  margin:0;font-size:14.5px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rec-arrow{margin-left:auto;color:var(--ink);flex:0 0 auto;transition:transform .24s var(--ease),color .24s var(--ease)}
.rec-item:hover .rec-arrow{transform:translateX(4px);color:var(--orange)}
.rec-thumb{
  width:76px;height:76px;flex:0 0 auto;border-radius:var(--r-img);overflow:hidden;background:var(--sand);
}
.rec-thumb img{width:100%;height:100%;object-fit:cover}

/* 返回入口 */
.back-row{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;
  margin-bottom:64px;
}

/* CTA */
.cta-block{
  position:relative;overflow:hidden;
  background:var(--dark);border-radius:20px;
  padding:56px 48px;color:#fff;
}
.cta-block::after{
  content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(192,91,42,.30),transparent 70%);
  pointer-events:none;
}
.cta-block > *{position:relative;z-index:1}
.cta-block h2{
  color:#fff;font-size:clamp(24px,2.8vw,34px);line-height:1.25;margin-bottom:14px;
}
.cta-block .cta-desc{
  color:rgba(255,255,255,.72);font-size:16px;line-height:1.8;max-width:640px;margin-bottom:30px;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.btn-light{background:#fff;color:var(--dark)}
.btn-light:hover{background:var(--sand);color:var(--dark);transform:translateY(-2px)}
.btn-outline-white{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-outline-white:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;transform:translateY(-2px)}
.btn-light i,.btn-outline-white i{font-size:15px}
.btn.is-saved{background:var(--orange);color:#fff}

/* 页脚 */
.site-footer{
  background:var(--sand);border-top:1px solid var(--line);
  padding:72px 0 0;margin-top:92px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1.3fr;gap:40px;
  padding-bottom:52px;
}
.brand-footer{margin-bottom:0}
.footer-brand p{
  margin:18px 0 20px;max-width:330px;font-size:14.5px;line-height:1.8;color:var(--text-2);
}
.social{display:flex;gap:12px}
.social a{
  width:36px;height:36px;border-radius:var(--r-pill);
  border:1px solid rgba(30,58,52,.18);color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;
  transition:border-color .24s var(--ease),color .24s var(--ease),background-color .24s var(--ease),transform .24s var(--ease);
}
.social a:hover{border-color:var(--orange);color:var(--orange);background:var(--orange-12);transform:translateY(-2px)}
.footer-col h4{
  font-family:var(--font-sans);font-size:14px;font-weight:600;
  color:var(--ink-deep);margin:0 0 18px;letter-spacing:.04em;
}
.footer-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:12px}
.footer-col li{font-size:14.5px;line-height:1.7;color:var(--text-2)}
.footer-col a{color:var(--text-2);font-size:14.5px}
.footer-col a:hover{color:var(--orange)}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* 返回顶部 */
.to-top{
  position:fixed;right:24px;bottom:30px;z-index:1030;
  width:44px;height:44px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);cursor:pointer;font-size:15px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s var(--ease),background-color .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.to-top.is-show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--ink);color:#fff;border-color:var(--ink)}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* 响应式 */
@media (max-width:991.98px){
  .nav-links{
    position:fixed;left:0;right:0;top:60px;bottom:0;
    background:var(--bg);flex-direction:column;align-items:stretch;gap:0;
    padding:16px 24px 40px;overflow-y:auto;z-index:1039;
    transform:translateY(-10px);opacity:0;visibility:hidden;
    transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s var(--ease);
  }
  .nav-links.is-open{transform:none;opacity:1;visibility:visible}
  .nav-link{height:46px;display:flex;align-items:center;font-size:16px;padding:0;border-bottom:1px solid var(--line)}
  .nav-link.is-active{color:var(--orange)}
  .nav-link.is-active::after{display:none}
  .drawer-extra{display:block;margin-top:26px}
  .drawer-extra .search-panel{
    position:static;max-height:none;opacity:1;visibility:visible;
    padding:0;border:none;box-shadow:none;background:transparent;
  }
  .drawer-extra .search-inner{padding:0}
  .drawer-extra .btn{margin-top:20px}
  .menu-toggle{display:inline-flex}
  #searchToggle{display:none}
  .nav-wrap{height:60px}
  .site-header.is-scrolled .nav-wrap{height:56px}
  .toc{position:static}
  .split{grid-template-columns:1fr;gap:22px}
  .split.is-reverse .split-media{order:0}
  .cta-block{padding:44px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .container,.container-lg,.container-md,.container-sm,.container-xl,.container-xxl{padding-left:18px;padding-right:18px}
  .nav-wrap{padding:0 18px;gap:12px}
  .nav-left{gap:20px}
  .brand-name{font-size:16.5px}
  .page-head{padding:48px 0 56px}
  .head-lead{font-size:16px}
  .cat-main{padding:52px 0 72px}
  .cat-section{padding-bottom:44px;margin-bottom:44px}
  .point-grid{grid-template-columns:1fr}
  .step-list li{padding:16px 0 16px 52px}
  .step-list li::before{width:32px;height:32px;font-size:13px;top:16px}
  .cta-block{padding:36px 22px;border-radius:16px}
  .cta-actions .btn{width:100%}
  .rec-item{padding:16px;gap:14px}
  .rec-thumb{width:64px;height:64px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:40px}
  .site-footer{padding-top:56px;margin-top:72px}
  .back-row .btn{width:100%}
  .to-top{right:16px;bottom:20px}
}
@media (max-width:575.98px){
  .page-head h1{font-size:26px}
  .cat-section h2{font-size:22px}
  .meta-row{gap:12px;font-size:12.5px}
  .btn{width:100%}
  .btn-nav{width:auto}
  .toc{padding:18px 16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;scroll-behavior:auto!important;
  }
}

/* roulang page: category2 */
:root{
  --ink:#1E3A34;
  --ink-deep:#142823;
  --ink-10:rgba(30,58,52,.10);
  --accent:#C05B2A;
  --accent-deep:#A84A1F;
  --accent-12:rgba(192,91,42,.12);
  --bamboo:#4C7A6A;
  --bamboo-10:rgba(76,122,106,.10);
  --mist:#F7F5F1;
  --sand:#EFEAE1;
  --card:#FFFFFF;
  --dark:#12211D;
  --t1:#1A1C1B;
  --t2:#5A625F;
  --t3:#8C918E;
  --line:#DED8CD;
  --r-card:16px;
  --r-img:12px;
  --r-btn:999px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(20,35,30,.06);
  --sh-2:0 14px 34px -20px rgba(20,35,30,.30);
  --sh-3:0 20px 44px -22px rgba(20,35,30,.40);
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --nav-h:68px;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.85;
  color:var(--t1);
  background:var(--mist);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .26s var(--ease);}
a:hover{color:var(--accent);}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);margin:0;letter-spacing:-.01em;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
::selection{background:var(--accent-12);color:var(--ink-deep);}

.container-x{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1400px){
  .container-x{max-width:1240px;}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 28px;
  border-radius:var(--r-btn);
  font-size:17px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease),transform .26s var(--ease),box-shadow .26s var(--ease);
  white-space:nowrap;
}
.btn:active{transform:scale(.98);}
.btn-primary{
  background:var(--accent);
  color:#fff;
  box-shadow:var(--sh-2);
}
.btn-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-3);}
.btn-outline{
  background:transparent;
  border-color:var(--ink);
  color:var(--ink);
}
.btn-outline:hover{background:var(--ink-10);color:var(--ink);transform:translateY(-2px);}
.btn-light-line{
  background:transparent;
  border-color:rgba(255,255,255,.42);
  color:#fff;
}
.btn-light-line:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;transform:translateY(-2px);}
.btn-white{
  background:#fff;
  color:var(--ink);
}
.btn-white:hover{background:#fff;color:var(--accent);transform:translateY(-2px);box-shadow:var(--sh-3);}
.btn-sm{height:40px;padding:0 20px;font-size:15px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--accent);
}
.link-more i{transition:transform .26s var(--ease);}
.link-more:hover i{transform:translateX(4px);}

/* ---------- 标签 / 徽章 ---------- */
.badge-pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  background:var(--bamboo-10);
  color:var(--bamboo);
  font-size:12.5px;
  font-weight:600;
  line-height:1.6;
}
.meta-plain{
  font-size:13px;
  color:var(--t3);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px;
}
.meta-row .dot{
  width:4px;height:4px;border-radius:50%;background:var(--line);display:inline-block;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  height:var(--nav-h);
  background:rgba(247,245,241,.86);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:height .28s var(--ease),background-color .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header.is-scrolled{
  height:58px;
  background:rgba(247,245,241,.94);
  border-bottom-color:var(--line);
  box-shadow:0 1px 2px rgba(20,35,30,.05);
}
.nav-wrap{
  max-width:1200px;
  height:100%;
  margin:0 auto;
  padding:0 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
@media (min-width:1400px){
  .nav-wrap{max-width:1240px;}
}
.nav-left{display:flex;align-items:center;gap:38px;min-width:0;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:30px;height:30px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:9px;
  background:var(--ink);
  color:#F0E3D6;
  flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px;}
.brand-name{
  font-family:var(--serif);
  font-size:18px;
  font-weight:700;
  letter-spacing:.01em;
  white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--t2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;
  background:var(--accent);
  transition:width .28s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{width:100%;}
.nav-right{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:#fff;
  border:1px solid var(--line);
  color:var(--ink);
  cursor:pointer;
  transition:border-color .26s var(--ease),background-color .26s var(--ease),color .26s var(--ease),transform .26s var(--ease);
}
.icon-btn:hover{border-color:var(--ink);color:var(--accent);transform:translateY(-1px);}
.btn-nav{height:40px;padding:0 22px;font-size:15px;box-shadow:none;}
.btn-nav:hover{box-shadow:var(--sh-2);}
.menu-toggle{display:none;}
.drawer-extra{display:none;}

/* 搜索面板 */
.search-panel{
  position:absolute;
  top:calc(100% + 8px);
  right:24px;
  width:360px;
  padding:18px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--sh-2);
  opacity:0;
  visibility:hidden;
  transform:translateY(-8px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s var(--ease);
}
.search-panel.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.search-label{display:block;font-size:13px;color:var(--t3);margin-bottom:8px;}
.search-input-wrap{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  height:48px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--r-input);
  background:var(--mist);
  transition:border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.search-input-wrap:focus-within{
  border-color:var(--ink);
  box-shadow:0 0 0 3px var(--accent-12);
}
.search-input-wrap i{color:var(--t3);font-size:14px;}
.search-input{
  flex:1;
  border:0;
  background:transparent;
  font-size:15px;
  color:var(--t1);
  outline:none;
  min-width:0;
}
.search-input::placeholder{color:var(--t3);}
.search-clear{
  border:0;background:transparent;color:var(--t3);cursor:pointer;padding:4px;
  transition:color .26s var(--ease);
}
.search-clear:hover{color:var(--accent);}
.search-hot{margin-top:12px;font-size:13px;color:var(--t3);display:flex;flex-wrap:wrap;gap:10px;}
.search-hot a{color:var(--ink);font-weight:500;border-bottom:1px solid transparent;transition:border-color .26s var(--ease),color .26s var(--ease);}
.search-hot a:hover{color:var(--accent);border-bottom-color:var(--accent);}

/* ---------- 页头 ---------- */
.cat-hero{
  position:relative;
  padding:64px 0 72px;
  background:var(--sand);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(180deg,rgba(247,245,241,.55),rgba(239,234,225,.95)),
                   repeating-linear-gradient(90deg,rgba(30,58,52,.05) 0 1px,transparent 1px 72px);
  pointer-events:none;
}
.cat-hero .container-x{position:relative;z-index:1;}
.breadcrumb-row{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--t3);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.breadcrumb-row a{color:var(--t2);}
.breadcrumb-row a:hover{color:var(--accent);}
.breadcrumb-row .sep{color:var(--line);}
.breadcrumb-row .current{color:var(--t3);}
.cat-hero h1{
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.2;
  font-weight:700;
  letter-spacing:-.02em;
  max-width:900px;
  margin-bottom:20px;
}
.cat-lead{
  max-width:760px;
  font-size:17px;
  color:var(--t2);
  line-height:1.85;
}
.cat-hero .meta-row{margin-top:22px;}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;
  top:var(--nav-h);
  z-index:50;
  background:rgba(247,245,241,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:top .28s var(--ease);
}
.anchor-scroll{
  display:flex;
  align-items:center;
  gap:10px;
  overflow-x:auto;
  padding:12px 24px;
  max-width:1200px;
  margin:0 auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.anchor-scroll::-webkit-scrollbar{display:none;}
@media (min-width:1400px){.anchor-scroll{max-width:1240px;}}
.anchor-link{
  flex:0 0 auto;
  padding:8px 18px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--t2);
  font-size:14px;
  font-weight:500;
  white-space:nowrap;
  transition:border-color .26s var(--ease),color .26s var(--ease),background-color .26s var(--ease),transform .26s var(--ease);
}
.anchor-link:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-1px);}
.anchor-link.is-active{background:var(--ink);border-color:var(--ink);color:#F5EFE5;}

/* ---------- 分节 ---------- */
.band{padding:96px 0;border-bottom:1px solid var(--line);}
.band-white{background:var(--mist);}
.band-sand{background:var(--sand);}
.band-dark{
  position:relative;
  background:var(--dark);
  border-bottom-color:transparent;
  overflow:hidden;
}
.band-dark::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(105deg,rgba(18,33,29,.94) 38%,rgba(18,33,29,.66)),
                   url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  opacity:.9;
  pointer-events:none;
}
.band-dark .container-x{position:relative;z-index:1;}
.band-dark h2,.band-dark h3{color:#F5EFE5;}
.band-dark p{color:rgba(245,239,229,.78);}
.section-label{
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--bamboo);
  font-weight:700;
  margin-bottom:14px;
  display:block;
}
.band-dark .section-label{color:var(--accent);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{
  font-size:clamp(24px,2.8vw,34px);
  line-height:1.25;
  margin-bottom:16px;
}
.section-head p{color:var(--t2);font-size:17px;}
.band-dark .section-head p{color:rgba(245,239,229,.78);}

/* 图文交错 */
.split{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;
  align-items:center;
}
.split.reverse .split-media{order:2;}
.split-media{
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-2);
  background:var(--sand);
  aspect-ratio:4/3;
}
.split-media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .34s var(--ease);
}
.split-media:hover img{transform:scale(1.03);}
.split-body h2{
  font-size:clamp(23px,2.5vw,32px);
  line-height:1.3;
  margin-bottom:18px;
}
.split-body p{color:var(--t2);}

/* 要点卡 2 列 */
.point-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
  margin-top:40px;
}
.point-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.point-card:hover{transform:translateY(-4px);border-color:rgba(30,58,52,.3);box-shadow:var(--sh-2);}
.point-num{
  font-family:var(--serif);
  font-size:26px;
  font-weight:700;
  color:rgba(30,58,52,.22);
  font-variant-numeric:tabular-nums;
  display:block;
  margin-bottom:10px;
  line-height:1;
}
.point-card h3{font-size:20px;margin-bottom:10px;}
.point-card p{font-size:15px;color:var(--t2);line-height:1.75;}

/* 横向滚动条目 */
.scroll-row{
  display:flex;
  gap:24px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:6px 4px 22px;
  margin-top:36px;
  scrollbar-width:thin;
  scrollbar-color:var(--line) transparent;
}
.scroll-row::-webkit-scrollbar{height:8px;}
.scroll-row::-webkit-scrollbar-track{background:transparent;}
.scroll-row::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px;}
.scroll-card{
  flex:0 0 320px;
  scroll-snap-align:start;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.scroll-card:hover{transform:translateY(-4px);border-color:rgba(30,58,52,.3);box-shadow:var(--sh-3);}
.scroll-card .idx{
  font-family:var(--serif);
  font-size:13px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--accent);
  display:block;
  margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.scroll-card h3{font-size:18px;margin-bottom:10px;}
.scroll-card p{font-size:15px;color:var(--t2);line-height:1.75;margin:0;}

/* 编号清单 */
.num-list{margin-top:8px;}
.num-item{
  display:grid;
  grid-template-columns:76px minmax(0,1fr);
  gap:22px;
  padding:26px 0;
  border-top:1px solid var(--line);
}
.num-item:last-child{border-bottom:1px solid var(--line);}
.num-item .n{
  font-family:var(--serif);
  font-size:22px;
  font-weight:700;
  color:var(--bamboo);
  font-variant-numeric:tabular-nums;
  line-height:1.4;
}
.num-item h3{font-size:20px;margin-bottom:8px;}
.num-item p{font-size:15.5px;color:var(--t2);margin:0;}

/* 暗色数字区 */
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
  margin-top:44px;
}
.stat-cell{
  border-left:2px solid var(--accent);
  padding:6px 0 6px 20px;
}
.stat-num{
  font-family:var(--serif);
  font-size:clamp(32px,3.6vw,46px);
  font-weight:700;
  color:#F5EFE5;
  line-height:1.1;
  font-variant-numeric:tabular-nums;
  display:block;
  margin-bottom:8px;
}
.stat-num small{font-size:16px;font-weight:600;margin-left:4px;color:var(--accent);}
.stat-cell span.t{font-size:14px;color:rgba(245,239,229,.7);line-height:1.7;display:block;}
.band-dark .btn{margin-top:40px;}

/* 步骤 */
.step-list{margin-top:8px;}
.step-item{
  display:grid;
  grid-template-columns:64px minmax(0,1fr);
  gap:24px;
  padding:28px 0;
  border-top:1px solid var(--line);
  align-items:start;
}
.step-item:last-child{border-bottom:1px solid var(--line);}
.step-badge{
  width:44px;height:44px;
  border-radius:50%;
  background:var(--ink);
  color:#F5EFE5;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);
  font-size:16px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
}
.step-item h3{font-size:19px;margin-bottom:8px;}
.step-item p{font-size:15.5px;color:var(--t2);margin:0;}
.step-media{
  margin-top:44px;
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-2);
  aspect-ratio:21/9;
  background:var(--sand);
}
.step-media img{width:100%;height:100%;object-fit:cover;}

/* FAQ */
.faq-wrap{
  display:grid;
  grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);
  gap:56px;
  align-items:start;
}
.faq-aside h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3;margin-bottom:16px;}
.faq-aside p{color:var(--t2);font-size:16px;}
.faq-list{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:60px;
  padding:16px 24px;
  background:transparent;
  border:0;
  border-left:3px solid transparent;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  transition:background-color .26s var(--ease),border-color .26s var(--ease),color .26s var(--ease);
}
.faq-q:hover{background:var(--sand);}
.faq-item.is-open .faq-q{border-left-color:var(--accent);}
.faq-icon{
  flex:0 0 auto;
  width:18px;height:18px;
  position:relative;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink);
  transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .25s var(--ease);
}
.faq-a-inner{
  padding:0 24px 22px;
  font-size:15.5px;
  line-height:1.8;
  color:var(--t2);
}

/* 相关推荐 */
.rec-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  margin-top:40px;
}
.rec-card{
  display:block;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease),background-color .28s var(--ease);
}
.rec-card:hover{transform:translateY(-4px);border-color:rgba(30,58,52,.3);box-shadow:var(--sh-3);background:var(--sand);}
.rec-thumb{aspect-ratio:4/3;overflow:hidden;background:var(--sand);}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .34s var(--ease);}
.rec-card:hover .rec-thumb img{transform:scale(1.03);}
.rec-body{padding:22px;}
.rec-body h3{font-size:18px;margin-bottom:10px;transition:color .26s var(--ease);}
.rec-card:hover .rec-body h3{color:var(--ink);}
.rec-body p{font-size:15px;color:var(--t2);line-height:1.75;margin-bottom:14px;}
.rec-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.rec-arrow{color:var(--accent);transition:transform .26s var(--ease);}
.rec-card:hover .rec-arrow{transform:translateX(4px);}

/* 收藏 / 分享 CTA */
.cta-block{
  background:var(--dark);
  border-radius:20px;
  padding:56px;
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:40px;
  align-items:center;
  box-shadow:var(--sh-2);
  position:relative;
  overflow:hidden;
}
.cta-block::after{
  content:"";
  position:absolute;
  right:-80px;top:-80px;
  width:260px;height:260px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(192,91,42,.28),transparent 68%);
  pointer-events:none;
}
.cta-block h2{
  color:#F5EFE5;
  font-size:clamp(23px,2.5vw,32px);
  line-height:1.3;
  margin-bottom:14px;
}
.cta-block p{color:rgba(245,239,229,.76);font-size:16.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1;}
.btn.is-saved{background:var(--accent);border-color:var(--accent);color:#fff;}

/* 页脚 */
.site-footer{
  background:var(--dark);
  color:rgba(245,239,229,.72);
  padding:72px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:40px;
}
.brand-footer{color:#F5EFE5;margin-bottom:16px;}
.brand-footer .brand-mark{background:#F5EFE5;color:var(--ink);}
.brand-footer:hover{color:#F5EFE5;}
.footer-brand p{font-size:14.5px;line-height:1.8;color:rgba(245,239,229,.62);max-width:320px;}
.social{display:flex;gap:12px;margin-top:18px;}
.social a{
  width:36px;height:36px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid rgba(245,239,229,.24);
  color:rgba(245,239,229,.76);
  transition:border-color .26s var(--ease),color .26s var(--ease),transform .26s var(--ease);
}
.social a:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}
.footer-col h4{
  color:#F5EFE5;
  font-family:var(--sans);
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  margin-bottom:18px;
}
.footer-col ul li{margin-bottom:12px;font-size:14.5px;}
.footer-col ul li a{color:rgba(245,239,229,.68);}
.footer-col ul li a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:52px;
  padding-top:22px;
  border-top:1px solid rgba(245,239,229,.14);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(245,239,229,.52);
  font-variant-numeric:tabular-nums;
}

/* 返回顶部 */
.to-top{
  position:fixed;
  right:24px;
  bottom:24px;
  width:44px;height:44px;
  border-radius:50%;
  background:var(--mist);
  border:1px solid var(--line);
  color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s var(--ease),color .26s var(--ease),border-color .26s var(--ease);
  z-index:70;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{color:var(--accent);border-color:var(--ink);}

/* 入场动画 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .scroll-card{flex:0 0 300px;}
}
@media (max-width:991.98px){
  :root{--nav-h:60px;}
  body{font-size:16.5px;}
  .nav-links{
    position:fixed;
    inset:var(--nav-h) 0 0 0;
    background:var(--mist);
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:18px 24px 32px;
    overflow-y:auto;
    transform:translateX(100%);
    transition:transform .3s var(--ease);
    z-index:75;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-link{
    padding:0;
    height:48px;
    display:flex;
    align-items:center;
    font-size:16px;
    border-bottom:1px solid var(--line);
  }
  .nav-link::after{display:none;}
  .nav-link.is-active{
    color:var(--ink);
    border-left:3px solid var(--accent);
    padding-left:12px;
  }
  .drawer-extra{display:block;margin-top:24px;}
  .drawer-extra .search-panel{
    position:static;
    width:100%;
    opacity:1;
    visibility:visible;
    transform:none;
    box-shadow:none;
    border:0;
    background:transparent;
    padding:0;
  }
  .drawer-extra .search-input-wrap{background:#fff;}
  .drawer-extra .btn{margin-top:20px;}
  .menu-toggle{display:inline-flex;}
  .btn-nav{display:none;}
  .search-panel:not(.is-open){pointer-events:none;}
  #searchPanel{right:24px;left:24px;width:auto;}
  .band{padding:72px 0;}
  .split{grid-template-columns:minmax(0,1fr);gap:36px;}
  .split.reverse .split-media{order:0;}
  .faq-wrap{grid-template-columns:minmax(0,1fr);gap:32px;}
  .cta-block{grid-template-columns:minmax(0,1fr);padding:44px 32px;}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .container-x,.nav-wrap{padding:0 18px;}
  .anchor-scroll{padding:10px 18px;}
  .cat-hero{padding:44px 0 52px;}
  .band{padding:56px 0;}
  .point-grid{grid-template-columns:minmax(0,1fr);}
  .rec-grid{grid-template-columns:minmax(0,1fr);}
  .scroll-card{flex:0 0 268px;}
  .num-item{grid-template-columns:52px minmax(0,1fr);gap:16px;}
  .step-item{grid-template-columns:48px minmax(0,1fr);gap:16px;}
  .step-media{aspect-ratio:16/9;}
  .split-media{aspect-ratio:16/10;}
  .band-dark .btn{margin-top:32px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .cta-block{padding:36px 22px;border-radius:16px;}
  .faq-q{padding:16px 18px;}
  .faq-a-inner{padding:0 18px 20px;}
}
@media (max-width:575.98px){
  .cat-hero h1{font-size:26px;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .stat-grid{grid-template-columns:minmax(0,1fr);}
  .btn{width:100%;}
  .btn-sm,.btn-nav,.icon-btn{width:auto;}
  .to-top{right:16px;bottom:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}