/* roulang page: index */
:root{
  --ink-900:#0B0E0D;
  --ink-800:#121614;
  --paper:#F7F5F0;
  --brand-700:#1C3A34;
  --brand-500:#2E5C51;
  --accent-500:#C75B39;
  --accent-100:#F3E3DA;
  --line:#E5E0D6;
  --muted:#7C7A72;
  --text:#1A1C1B;
  --radius-card:10px;
  --radius-btn:6px;
  --shadow-1:0 1px 2px rgba(11,14,13,.06);
  --shadow-2:0 18px 42px -18px rgba(11,14,13,.35);
  --font-sans:"Inter","Helvetica Neue",-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-serif:"Songti SC","Source Han Serif SC","Noto Serif SC",Georgia,"Times New Roman",serif;
  --pad-section:112px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;background:var(--paper);color:var(--text);
  font-family:var(--font-sans);font-size:16px;line-height:1.9;
  -webkit-font-smoothing:antialiased;letter-spacing:.01em;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .24s ease}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent-500);outline-offset:3px}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:600;letter-spacing:-.02em;line-height:1.2;color:var(--text)}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
button,input{font-family:inherit;font-size:inherit}
.grid-container{max-width:1240px;padding-left:24px;padding-right:24px}
.grid-container.full{max-width:100%;padding:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;border:1px solid transparent;
  cursor:pointer;transition:background-color .24s ease,color .24s ease,border-color .24s ease,transform .24s ease;
  font-family:var(--font-sans);
}
.btn-primary{background:var(--brand-700);color:#fff;border-color:var(--brand-700)}
.btn-primary:hover{background:var(--brand-500);border-color:var(--brand-500);transform:translateY(-2px)}
.btn-accent{background:var(--accent-500);color:#fff;border-color:var(--accent-500)}
.btn-accent:hover{background:#b04d2f;border-color:#b04d2f;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost:hover{background:#fff;color:var(--ink-900);border-color:#fff}
.btn-outline{background:transparent;color:var(--brand-700);border-color:var(--line)}
.btn-outline:hover{border-color:var(--brand-700);background:var(--brand-700);color:#fff}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  border-bottom:1px solid rgba(255,255,255,.14);
  background:linear-gradient(180deg,rgba(11,14,13,.62),rgba(11,14,13,0));
  transition:background-color .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{background:var(--ink-900);border-bottom-color:rgba(229,224,214,.16);box-shadow:0 10px 30px -22px rgba(0,0,0,.9)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.brand{display:flex;align-items:baseline;gap:10px;color:#fff;white-space:nowrap}
.brand strong{font-family:var(--font-sans);font-size:19px;font-weight:700;letter-spacing:-.01em}
.brand .brand-sub{font-size:12px;font-weight:400;color:rgba(255,255,255,.62);letter-spacing:.14em}
.brand .sep{color:var(--accent-500);font-weight:700}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-link{
  position:relative;font-size:14.5px;color:rgba(255,255,255,.78);padding:6px 0;
  letter-spacing:.02em;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent-500);
  transition:width .24s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{width:60%}
.nav-link.is-active{color:#fff}
.nav-link.is-active::after{width:60%}
.nav-tools{display:flex;align-items:center;gap:16px;color:#fff}
.nav-icon{
  width:40px;height:40px;border:1px solid rgba(255,255,255,.24);border-radius:var(--radius-btn);
  display:flex;align-items:center;justify-content:center;background:transparent;color:#fff;cursor:pointer;
  transition:border-color .24s ease,background-color .24s ease;
}
.nav-icon:hover{border-color:var(--accent-500);background:rgba(199,91,57,.16)}
.nav-toggle{display:none}
.mobile-panel{
  position:fixed;top:72px;left:0;right:0;bottom:0;background:var(--ink-900);z-index:59;
  padding:28px 24px 48px;transform:translateY(-12px);opacity:0;pointer-events:none;transition:opacity .26s ease,transform .26s ease;
  overflow-y:auto;
}
.mobile-panel.is-open{opacity:1;transform:translateY(0);pointer-events:auto}
.mobile-panel a{
  display:block;color:#fff;font-size:22px;font-family:var(--font-serif);font-weight:600;
  padding:20px 0;border-bottom:1px solid rgba(229,224,214,.14);
}
.mobile-panel a:hover{color:var(--accent-500)}
.mobile-panel .mp-note{color:rgba(255,255,255,.45);font-size:13px;margin-top:26px;letter-spacing:.06em}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:88vh;display:flex;align-items:flex-end;overflow:hidden;background:var(--ink-900)}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center 22%;
  transform:scale(1.02);
}
.hero-veil{
  position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(11,14,13,.86) 0%,rgba(11,14,13,.35) 34%,rgba(11,14,13,.72) 72%,var(--ink-900) 100%),
    linear-gradient(90deg,rgba(11,14,13,.82),rgba(11,14,13,.18));
}
.hero-inner{position:relative;z-index:2;width:100%;padding-bottom:64px;padding-top:150px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;color:var(--accent-100);
  font-size:12px;letter-spacing:.18em;text-transform:uppercase;margin-bottom:22px;
}
.hero-eyebrow .dot{width:6px;height:6px;border-radius:999px;background:var(--accent-500)}
.hero-title{
  color:#fff;font-size:clamp(34px,5vw,62px);line-height:1.14;max-width:17em;margin-bottom:20px;
}
.hero-title em{font-style:normal;color:var(--accent-500)}
.hero-sub{color:rgba(255,255,255,.8);font-size:17px;max-width:38em;margin-bottom:34px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:46px}
.hero-foot{
  border-top:1px solid rgba(229,224,214,.2);padding-top:18px;display:flex;flex-wrap:wrap;
  gap:14px 34px;align-items:center;color:rgba(255,255,255,.6);font-size:13px;letter-spacing:.04em;
}
.hero-foot span strong{color:#fff;font-weight:600;margin-right:6px}
.fade-up{opacity:0;transform:translateY(12px);animation:heroIn .9s cubic-bezier(.22,.68,.32,1) forwards}
.fade-up.d1{animation-delay:.12s}.fade-up.d2{animation-delay:.24s}.fade-up.d3{animation-delay:.36s}.fade-up.d4{animation-delay:.48s}
@keyframes heroIn{to{opacity:1;transform:translateY(0)}}

/* ---------- 索引条 ---------- */
.index-bar{background:var(--paper);border-bottom:1px solid var(--line)}
.index-bar .grid-container{display:flex;flex-wrap:wrap;align-items:center;gap:16px 18px;padding-top:22px;padding-bottom:22px}
.index-label{font-size:12px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase}
.tag{
  display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:999px;
  padding:7px 16px;font-size:13px;color:var(--text);background:#fff;transition:border-color .24s ease,color .24s ease,transform .24s ease;
}
.tag:hover{border-color:var(--accent-500);color:var(--accent-500);transform:translateY(-2px)}
.tag .num{font-size:11px;color:var(--accent-500);font-weight:700}

/* ---------- 通用板块 ---------- */
.section{padding:var(--pad-section) 0}
.section.tight{padding-top:88px;padding-bottom:88px}
.section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section.dark{background:var(--ink-900);color:#fff}
.section-title{font-size:clamp(26px,3.2vw,38px);margin-bottom:14px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:42px;flex-wrap:wrap}
.section-desc{color:var(--muted);max-width:640px;font-size:15.5px}
.section.dark .section-title{color:#fff}
.section.dark .section-desc{color:rgba(255,255,255,.6)}
.eyebrow{font-size:12px;letter-spacing:.18em;color:var(--accent-500);text-transform:uppercase;margin-bottom:12px;display:block}
.rail-arrows{display:flex;gap:10px}
.arrow-btn{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);background:transparent;
  color:var(--text);cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:border-color .24s ease,color .24s ease,background-color .24s ease;
}
.arrow-btn:hover{border-color:var(--accent-500);color:var(--accent-500);background:#fff}

/* ---------- 横滑片库 ---------- */
.rail{position:relative}
.rail-track{
  display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:14px;scrollbar-width:none;-ms-overflow-style:none;
}
.rail-track::-webkit-scrollbar{display:none}
.rail-card{
  flex:0 0 244px;scroll-snap-align:start;
}
.rail-cover{
  position:relative;aspect-ratio:2/3;border-radius:var(--radius-card);overflow:hidden;
  background:var(--line);box-shadow:var(--shadow-1);transition:transform .3s ease,box-shadow .3s ease;
}
.rail-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.22,.68,.32,1)}
.rail-cover::after{content:"";position:absolute;inset:auto 0 0 0;height:52%;background:linear-gradient(180deg,rgba(11,14,13,0),rgba(11,14,13,.78))}
.rail-card:hover .rail-cover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.rail-card:hover .rail-cover img{transform:scale(1.04)}
.rail-badge{
  position:absolute;left:12px;top:12px;z-index:2;background:rgba(11,14,13,.72);color:#fff;
  border-radius:999px;padding:4px 11px;font-size:11px;letter-spacing:.08em;
}
.rail-name{font-size:15.5px;font-weight:600;margin-top:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-family:var(--font-sans)}
.rail-card:hover .rail-name{color:var(--accent-500)}
.rail-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:12.5px;margin-top:4px;letter-spacing:.04em}

/* ---------- 热播推荐 ---------- */
.hot-list{border-top:1px solid var(--line)}
.hot-item{
  display:grid;grid-template-columns:6.5fr 5.5fr;gap:48px;align-items:center;
  padding:52px 0;border-bottom:1px solid var(--line);
}
.hot-media{border-radius:var(--radius-card);overflow:hidden;aspect-ratio:16/9;background:var(--line);position:relative}
.hot-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.22,.68,.32,1)}
.hot-item:hover .hot-media img{transform:scale(1.04)}
.hot-num{
  font-family:var(--font-sans);font-size:60px;font-weight:700;line-height:1;color:var(--line);
  letter-spacing:-.04em;margin-bottom:12px;display:block;
}
.hot-item:hover .hot-num{color:var(--accent-100)}
.hot-name{font-size:clamp(20px,2.3vw,27px);margin-bottom:12px}
.hot-text{color:var(--muted);font-size:15.5px;max-width:34em}
.hot-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.hot-tags span{
  font-size:12px;letter-spacing:.06em;color:var(--brand-700);background:var(--accent-100);
  border-radius:999px;padding:5px 13px;
}
.hot-link{display:inline-block;margin-top:22px;font-size:14px;font-weight:600;color:var(--brand-700);border-bottom:1px solid transparent;transition:border-color .24s ease,color .24s ease}
.hot-link:hover{color:var(--accent-500);border-bottom-color:var(--accent-500)}

/* ---------- 片单分区 ---------- */
.zone-row{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:64px 0;border-bottom:1px solid var(--line)}
.zone-row:last-child{border-bottom:none}
.zone-row.reverse .zone-media{order:2}
.zone-row.reverse .zone-body{order:1}
.zone-media{border-radius:var(--radius-card);overflow:hidden;aspect-ratio:4/3;background:var(--line);position:relative}
.zone-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.22,.68,.32,1)}
.zone-row:hover .zone-media img{transform:scale(1.04)}
.zone-index{font-size:12px;letter-spacing:.18em;color:var(--accent-500);margin-bottom:12px;display:block}
.zone-name{font-size:clamp(21px,2.4vw,29px);margin-bottom:14px}
.zone-text{color:var(--muted);font-size:15.5px;margin-bottom:18px}
.zone-list li{position:relative;padding-left:18px;font-size:14.5px;color:var(--text);margin-bottom:8px}
.zone-list li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:4px;background:var(--accent-500)}
.zone-more{display:inline-block;margin-top:22px;font-weight:600;font-size:14px;color:var(--brand-700)}
.zone-more i{margin-left:6px;transition:transform .24s ease}
.zone-more:hover{color:var(--accent-500)}
.zone-more:hover i{transform:translateX(4px)}

/* ---------- 资讯列表（CMS） ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;
  box-shadow:var(--shadow-1);transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
  height:100%;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#d9d2c4}
.news-link{display:flex;flex-direction:column;height:100%;padding:26px 24px 20px}
.news-title{
  font-size:19px;font-family:var(--font-sans);font-weight:600;line-height:1.5;margin-bottom:12px;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover .news-title{color:var(--accent-500)}
.news-excerpt{
  color:var(--muted);font-size:14.5px;margin-bottom:20px;flex:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:12.5px;letter-spacing:.06em;border-top:1px solid var(--line);padding-top:14px}
.news-meta .dot{width:4px;height:4px;border-radius:999px;background:var(--line)}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);padding:56px 24px;text-align:center;color:var(--muted);
  background:#fff;
}
.empty-state a{color:var(--accent-500);font-weight:600;margin-left:8px}
.list-foot{margin-top:34px;text-align:center}

/* ---------- FAQ ---------- */
.faq .accordion{border:none;background:transparent}
.faq .accordion-item{border:none;border-top:1px solid var(--line);background:transparent}
.faq .accordion-item:last-child{border-bottom:1px solid var(--line)}
.faq .accordion-title{
  border:none;background:transparent;padding:26px 46px 26px 34px;font-family:var(--font-sans);
  font-size:17px;font-weight:600;color:var(--text);position:relative;
}
.faq .accordion-title::before{
  content:"";position:absolute;left:0;top:33px;width:16px;height:16px;border-radius:4px;background:var(--accent-500);
}
.faq .accordion-title::after{
  content:"\f107";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;right:8px;top:50%;
  transform:translateY(-50%);color:var(--muted);transition:transform .28s ease;font-size:15px;
}
.faq .accordion-item.is-active .accordion-title::after{transform:translateY(-50%) rotate(180deg)}
.faq .accordion-title:hover{color:var(--accent-500)}
.faq .accordion-content{padding:0 46px 28px 34px;color:var(--muted);font-size:15px;background:transparent;border:none}
.faq .accordion-content p{margin-bottom:10px}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--brand-700);color:#fff;padding:88px 0}
.cta-band .grid-container{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-title{font-size:clamp(24px,3vw,34px);color:#fff;margin-bottom:10px}
.cta-text{color:rgba(255,255,255,.72);font-size:15.5px;max-width:46em}

/* ---------- 搜索/订阅表单 ---------- */
.search-form{display:flex;max-width:520px;width:100%;margin-top:26px}
.search-form input{
  flex:1;min-height:48px;border:1px solid rgba(255,255,255,.3);border-right:none;background:transparent;
  color:#fff;padding:0 16px;border-radius:var(--radius-btn) 0 0 var(--radius-btn);
}
.search-form input::placeholder{color:rgba(255,255,255,.5)}
.search-form input:focus{outline:none;border-color:var(--accent-500)}
.search-form button{
  min-height:48px;padding:0 22px;border:1px solid var(--accent-500);background:var(--accent-500);color:#fff;
  border-radius:0 var(--radius-btn) var(--radius-btn) 0;cursor:pointer;font-weight:600;
  transition:background-color .24s ease;
}
.search-form button:hover{background:#b04d2f}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.68);padding:72px 0 0;border-top:1px solid rgba(229,224,214,.14)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:52px}
.footer-brand{color:#fff;font-size:20px;font-weight:700;margin-bottom:14px;font-family:var(--font-sans)}
.footer-brand .sep{color:var(--accent-500)}
.footer-note{font-size:14px;line-height:1.9;max-width:34em;color:rgba(255,255,255,.6)}
.footer-title{color:#fff;font-size:13px;letter-spacing:.16em;text-transform:uppercase;margin-bottom:18px;font-family:var(--font-sans)}
.footer-links li{margin-bottom:11px}
.footer-links a{font-size:14.5px;color:rgba(255,255,255,.68)}
.footer-links a:hover{color:var(--accent-500)}
.footer-bottom{
  border-top:1px solid rgba(229,224,214,.14);padding:22px 0;display:flex;justify-content:space-between;
  gap:14px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- 滚动进场 ---------- */
.reveal-item{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s cubic-bezier(.22,.68,.32,1)}
.reveal-item.is-in{opacity:1;transform:translateY(0)}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  :root{--pad-section:84px}
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .hero{min-height:80vh}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .hot-item{grid-template-columns:1fr;gap:26px;padding:42px 0}
  .zone-row{grid-template-columns:1fr;gap:28px;padding:48px 0}
  .zone-row.reverse .zone-media,.zone-row.reverse .zone-body{order:initial}
}
@media screen and (max-width:767px){
  :root{--pad-section:60px}
  body{font-size:15.5px}
  .grid-container{padding-left:18px;padding-right:18px}
  .nav-inner{height:64px}
  .brand strong{font-size:17px}
  .brand .brand-sub{display:none}
  .mobile-panel{top:64px}
  .hero{min-height:72vh}
  .hero-inner{padding-top:120px;padding-bottom:40px}
  .hero-sub{font-size:15.5px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 auto;min-height:48px}
  .section-head{margin-bottom:28px}
  .rail-card{flex:0 0 196px}
  .rail-track{gap:16px}
  .hot-num{font-size:44px}
  .news-grid{grid-template-columns:1fr}
  .cta-band{padding:64px 0}
  .faq .accordion-title{padding:20px 40px 20px 30px;font-size:15.5px}
  .faq .accordion-title::before{top:26px}
  .faq .accordion-content{padding:0 30px 22px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media screen and (max-width:520px){
  .hero-title{font-size:30px}
  .index-bar .grid-container{gap:10px 10px}
  .tag{padding:6px 12px;font-size:12.5px}
  .rail-card{flex:0 0 172px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .fade-up{opacity:1;transform:none}
  .reveal-item{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink-900:#0B0E0D;
  --ink-800:#121614;
  --paper:#F7F5F0;
  --brand-700:#1C3A34;
  --brand-500:#2E5C51;
  --accent-500:#C75B39;
  --accent-100:#F3E3DA;
  --line:#E5E0D6;
  --muted:#7C7A72;
  --text:#1A1C1B;
  --radius-card:10px;
  --radius-btn:6px;
  --shadow-1:0 1px 2px rgba(11,14,13,.06);
  --shadow-2:0 18px 42px -18px rgba(11,14,13,.35);
  --font-sans:"Inter","Helvetica Neue",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"SimSun",serif;
  --container:1240px;
  --read:720px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
h1,h2,h3,h4{margin:0;font-weight:600}
p{margin:0 0 1.2em}
ul,ol{margin:0}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--accent-500);outline-offset:3px;border-radius:3px}
.grid-container{width:100%;max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px}
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-in{opacity:1;transform:none}
.section-label{
  font-size:12px;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
}
.section-label::before{content:"";width:16px;height:4px;border-radius:4px;background:var(--accent-500)}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  border-bottom:1px solid rgba(229,224,214,.14);
  background:transparent;
  transition:background .3s ease,border-color .3s ease;
}
.site-header.is-scrolled{background:var(--ink-900);border-bottom-color:rgba(229,224,214,.18)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;height:76px}
.brand{display:flex;align-items:baseline;gap:6px;font-size:18px;letter-spacing:-.01em}
.brand strong{color:#F7F5F0;font-weight:600}
.brand .sep{color:var(--accent-500);font-weight:600}
.brand-sub{font-size:12.5px;letter-spacing:.16em;color:rgba(247,245,240,.5);text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-link{position:relative;font-size:15px;color:rgba(247,245,240,.72);padding:6px 0;transition:color .24s ease}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent-500);transition:width .24s ease}
.nav-link:hover{color:#F7F5F0}
.nav-link:hover::after{width:60%}
.nav-link.is-active{color:#F7F5F0}
.nav-link.is-active::after{width:60%}
.nav-tools{display:flex;align-items:center;gap:6px}
.nav-icon{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  color:rgba(247,245,240,.75);border-radius:var(--radius-btn);transition:color .24s ease,background .24s ease;
}
.nav-icon:hover{color:var(--accent-500);background:rgba(247,245,240,.06)}
.nav-toggle{display:none}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,370px);z-index:80;
  background:var(--ink-900);padding:26px 24px 40px;overflow-y:auto;
  transform:translateX(102%);transition:transform .34s cubic-bezier(.4,0,.2,1);
}
.nav-drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-head span{color:rgba(247,245,240,.5);font-size:12.5px;letter-spacing:.16em;text-transform:uppercase}
.drawer-close{color:rgba(247,245,240,.7);width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center}
.drawer-links a{display:block;padding:18px 0;border-bottom:1px solid rgba(229,224,214,.12);font-size:18px;color:var(--paper);transition:color .24s ease}
.drawer-links a:hover{color:var(--accent-500)}
.drawer-note{margin-top:26px;font-size:13px;line-height:1.9;color:rgba(247,245,240,.45)}
.nav-mask{position:fixed;inset:0;background:rgba(11,14,13,.62);z-index:70;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease}
.nav-mask.is-open{opacity:1;visibility:visible}

/* ============ 文章头 ============ */
.article-hero{
  position:relative;
  padding:158px 0 66px;
  color:var(--paper);
  background-image:
    linear-gradient(180deg,rgba(11,14,13,.94) 0%,rgba(11,14,13,.86) 45%,rgba(11,14,13,.97) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover,cover;
  background-position:center,center 28%;
  background-repeat:no-repeat,no-repeat;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.05em;color:rgba(247,245,240,.55);
}
.breadcrumb a{transition:color .24s ease}
.breadcrumb a:hover{color:var(--accent-500)}
.breadcrumb .slash{color:rgba(247,245,240,.26)}
.breadcrumb .current{color:rgba(247,245,240,.72);max-width:420px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.article-title{
  font-family:var(--font-serif);
  font-size:clamp(32px,5vw,58px);
  line-height:1.16;
  letter-spacing:-.02em;
  font-weight:600;
  color:#fff;
  margin:26px 0 22px;
  max-width:920px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:16px;font-size:13px;letter-spacing:.08em;color:rgba(247,245,240,.6)}
.article-meta .dot{width:5px;height:5px;border-radius:50%;background:var(--accent-500)}
.article-meta .meta-chip{border:1px solid rgba(247,245,240,.22);border-radius:999px;padding:4px 14px;color:rgba(247,245,240,.8)}

/* ============ 正文 ============ */
.article-body{padding:76px 0 30px}
.reading{max-width:var(--read);margin:0 auto}
.article-content{font-size:16.5px;line-height:1.95;color:var(--text)}
.article-content p{margin:0 0 1.4em}
.article-content h2{
  font-family:var(--font-serif);font-size:28px;line-height:1.35;letter-spacing:-.01em;
  margin:2.3em 0 1em;padding-bottom:14px;border-bottom:1px solid var(--line);
}
.article-content h3{font-size:21px;line-height:1.45;margin:1.9em 0 .7em}
.article-content h4{font-size:17.5px;margin:1.6em 0 .6em;color:var(--brand-700)}
.article-content ul,.article-content ol{padding-left:1.35em;margin:0 0 1.5em}
.article-content li{margin-bottom:.62em}
.article-content blockquote{
  margin:1.8em 0;padding:4px 0 4px 20px;border-left:3px solid var(--accent-500);
  color:var(--muted);font-size:16px;
}
.article-content img{border-radius:var(--radius-card);margin:1.7em 0;width:100%}
.article-content figure{margin:1.9em 0}
.article-content figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;line-height:1.7}
.article-content a{color:var(--brand-500);border-bottom:1px solid rgba(46,92,81,.36);transition:color .24s ease,border-color .24s ease}
.article-content a:hover{color:var(--accent-500);border-color:var(--accent-500)}
.article-content table{width:100%;border-collapse:collapse;font-size:14.5px;margin:1.9em 0}
.article-content th,.article-content td{padding:12px 10px;text-align:left;border-bottom:1px solid var(--line)}
.article-content th{font-size:13px;letter-spacing:.06em;color:var(--muted);font-weight:600}
.article-content pre{
  background:var(--ink-900);color:#E9E6DE;border-radius:var(--radius-card);
  padding:18px 20px;overflow:auto;font-size:14px;line-height:1.8;margin:1.8em 0;
}
.article-content code{font-family:"SFMono-Regular",Consolas,Menlo,monospace}
.article-content p code,.article-content li code{background:var(--accent-100);color:#8E3B1F;padding:2px 6px;border-radius:4px;font-size:14px}
.empty-state{
  border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;
  padding:48px 32px;text-align:center;
}
.empty-state h2{font-family:var(--font-serif);font-size:26px;margin-bottom:12px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:26px}
.tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:52px;padding-top:30px;border-top:1px solid var(--line)}
.tag{
  font-size:12.5px;letter-spacing:.06em;color:var(--muted);
  border:1px solid var(--line);border-radius:999px;padding:6px 15px;
  transition:color .24s ease,border-color .24s ease;
}
.tag:hover{color:var(--accent-500);border-color:var(--accent-500)}

/* ============ 相关推荐 ============ */
.related{padding:70px 0 8px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.section-title{font-family:var(--font-serif);font-size:clamp(24px,3vw,34px);letter-spacing:-.01em;line-height:1.3}
.section-desc{font-size:14px;color:var(--muted);margin:10px 0 0;max-width:560px}
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D9D2C4}
.card-media{aspect-ratio:16/9;background:var(--line);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px 22px 24px}
.card-body h3{font-size:18px;line-height:1.45;margin-bottom:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card-ex{
  font-size:14px;line-height:1.8;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{display:flex;align-items:center;gap:10px;margin-top:16px;font-size:12px;letter-spacing:.08em;color:var(--muted)}
.card-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--accent-500)}

/* ============ 上下篇 + 返回 ============ */
.pn-wrap{padding:56px 0 0}
.prev-next{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.pn-item{display:block;padding:28px 26px;transition:background .24s ease}
.pn-item:first-child{border-right:1px solid var(--line)}
.pn-item:hover{background:#fff}
.pn-label{font-size:12px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase}
.pn-title{font-size:17px;font-weight:600;line-height:1.6;margin-top:10px;transition:color .24s ease}
.pn-item:hover .pn-title{color:var(--brand-500)}
.back-row{margin-top:36px;display:flex;gap:14px;flex-wrap:wrap}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background .24s ease,color .24s ease,border-color .24s ease,transform .24s ease;
}
.btn-accent{background:var(--accent-500);color:#fff}
.btn-accent:hover{background:#B44E2E;color:#fff;transform:translateY(-2px)}
.btn-dark{background:var(--brand-700);color:var(--paper)}
.btn-dark:hover{background:var(--ink-900);color:var(--paper)}
.btn-ghost{border-color:rgba(247,245,240,.4);color:var(--paper)}
.btn-ghost:hover{background:var(--paper);color:var(--ink-900);border-color:var(--paper)}
.btn-line{border-color:var(--line);color:var(--text);background:#fff}
.btn-line:hover{border-color:var(--brand-500);color:var(--brand-500)}

/* ============ FAQ ============ */
.faq{background:#fff;border-top:1px solid var(--line);padding:96px 0;margin-top:96px}
.faq-list{max-width:860px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  padding:24px 0;font-size:17px;font-weight:600;line-height:1.6;
}
.faq summary::-webkit-details-marker{display:none}
.faq .bullet{width:16px;height:16px;border-radius:4px;background:var(--accent-500);flex:0 0 16px}
.faq .chev{margin-left:auto;color:var(--muted);transition:transform .3s ease;font-size:14px}
.faq details[open] .chev{transform:rotate(180deg)}
.faq details h3{display:none}
.faq .answer{color:var(--muted);font-size:15px;line-height:1.9;margin:0 0 24px 32px;max-width:720px}

/* ============ CTA ============ */
.cta-band{background:var(--brand-700);color:var(--paper);padding:88px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-copy{max-width:640px}
.cta-title{font-family:var(--font-serif);font-size:clamp(26px,3.6vw,40px);line-height:1.25;letter-spacing:-.01em;margin-bottom:14px}
.cta-sub{font-size:15px;color:rgba(247,245,240,.72);margin:0}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(247,245,240,.72);border-top:1px solid rgba(229,224,214,.12);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}
.footer-brand{color:var(--paper);font-size:17px;font-weight:600;margin-bottom:16px}
.footer-brand .sep{color:var(--accent-500);margin:0 4px}
.footer-note{font-size:14px;line-height:1.9;color:rgba(247,245,240,.52);max-width:340px;margin:0}
.footer-title{font-size:13px;font-weight:500;letter-spacing:.12em;color:rgba(247,245,240,.44);margin-bottom:18px;text-transform:uppercase}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin-bottom:12px}
.footer-links a{font-size:14.5px;color:rgba(247,245,240,.72);transition:color .24s ease}
.footer-links a:hover{color:var(--accent-500)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(229,224,214,.12);
  font-size:12.5px;color:rgba(247,245,240,.42);letter-spacing:.02em;
}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .cards-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media screen and (max-width:768px){
  body{font-size:15.5px}
  .grid-container{padding-left:18px;padding-right:18px}
  .nav-inner{height:66px}
  .brand{font-size:16.5px}
  .brand-sub{font-size:11.5px}
  .article-hero{padding:122px 0 48px;background-position:center,center 22%}
  .article-title{margin:20px 0 18px}
  .article-body{padding:52px 0 20px}
  .article-content{font-size:15.5px}
  .article-content h2{font-size:23px;margin-top:1.9em}
  .article-content h3{font-size:19px}
  .related{padding-top:48px}
  .faq{padding:64px 0;margin-top:64px}
  .faq summary{font-size:16px;padding:20px 0}
  .cta-band{padding:64px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .prev-next{grid-template-columns:1fr}
  .pn-item:first-child{border-right:0;border-bottom:1px solid var(--line)}
  .site-footer{padding:56px 0 24px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{margin-top:40px}
  .btn{width:100%;max-width:320px}
}
@media screen and (max-width:560px){
  .cards-3{grid-template-columns:1fr;gap:20px}
  .article-content img,.article-content figure img{border-radius:8px}
  .breadcrumb .current{max-width:200px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --ink-900:#0B0E0D;
  --ink-800:#121614;
  --paper:#F7F5F0;
  --brand-700:#1C3A34;
  --brand-500:#2E5C51;
  --accent-500:#C75B39;
  --accent-100:#F3E3DA;
  --line:#E5E0D6;
  --muted:#7C7A72;
  --text:#1A1C1B;
  --white:#FFFFFF;
  --radius-card:10px;
  --radius-btn:6px;
  --shadow-rest:0 1px 2px rgba(11,14,13,.06);
  --shadow-hover:0 18px 42px -18px rgba(11,14,13,.35);
  --font-sans:"Inter","Helvetica Neue",-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --container:1240px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .24s ease}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:3px}
::selection{background:var(--accent-100);color:var(--ink-900)}

.grid-container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,245,240,.92);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-solid{
  background:var(--ink-900);
  border-bottom-color:rgba(229,224,214,.16);
  box-shadow:0 10px 30px -22px rgba(11,14,13,.85);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  font-size:17px;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.brand strong{font-weight:700;color:var(--ink-900);transition:color .3s ease}
.brand-sub{font-size:13px;color:var(--muted);letter-spacing:.08em;transition:color .3s ease}
.brand .sep{color:var(--accent-500);font-weight:700}
.site-header.is-solid .brand strong{color:var(--paper)}
.site-header.is-solid .brand-sub{color:rgba(247,245,240,.62)}
.brand:hover strong{color:var(--accent-500)}

.nav-links{display:flex;align-items:center;gap:34px}
.nav-link{
  position:relative;
  font-size:14.5px;
  letter-spacing:.02em;
  color:var(--text);
  padding:6px 0;
  transition:color .24s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:60%;
  height:2px;
  background:var(--accent-500);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s ease;
}
.nav-link:hover{color:var(--accent-500)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.site-header.is-solid .nav-link{color:rgba(247,245,240,.82)}
.site-header.is-solid .nav-link:hover,.site-header.is-solid .nav-link.is-active{color:var(--paper)}

.nav-tools{display:flex;align-items:center;gap:6px}
.nav-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:var(--radius-btn);
  color:var(--text);
  border:0;
  background:transparent;
  cursor:pointer;
  font-size:15px;
  transition:color .24s ease,background .24s ease;
}
.nav-icon:hover{color:var(--accent-500);background:rgba(199,91,57,.08)}
.site-header.is-solid .nav-icon{color:rgba(247,245,240,.85)}
.site-header.is-solid .nav-icon:hover{color:var(--accent-500);background:rgba(199,91,57,.16)}
.nav-toggle{display:none}
.nav-scrim{
  position:fixed;
  inset:0;
  background:rgba(11,14,13,.6);
  opacity:0;
  visibility:hidden;
  transition:opacity .3s ease,visibility .3s ease;
  z-index:70;
}
.nav-scrim.is-open{opacity:1;visibility:visible}

/* ============ 页首横幅 ============ */
.page-banner{
  position:relative;
  min-height:320px;
  display:flex;
  align-items:flex-end;
  background:var(--ink-900) url('/assets/images/backpic/back-2.webp') center 32%/cover no-repeat;
  overflow:hidden;
}
.page-banner::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(11,14,13,.9) 0%,rgba(11,14,13,.72) 42%,rgba(11,14,13,.95) 100%);
}
.banner-inner{
  position:relative;
  z-index:2;
  width:100%;
  padding-top:96px;
  padding-bottom:42px;
}
.crumbs{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:12.5px;
  letter-spacing:.08em;
  color:rgba(247,245,240,.62);
  margin-bottom:18px;
}
.crumbs a:hover{color:var(--accent-500)}
.crumb-sep{color:rgba(247,245,240,.32)}
.banner-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--accent-100);
  border:1px solid rgba(199,91,57,.5);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:16px;
}
.banner-tag i{color:var(--accent-500);font-size:11px}
.banner-title{
  font-size:clamp(30px,4.4vw,46px);
  line-height:1.16;
  font-weight:600;
  letter-spacing:-.02em;
  color:var(--paper);
  max-width:820px;
}
.banner-sub{
  margin-top:14px;
  font-size:15.5px;
  color:rgba(247,245,240,.72);
  max-width:660px;
}
.banner-line{
  margin-top:32px;
  height:1px;
  background:rgba(229,224,214,.18);
}

/* ============ 板块通用 ============ */
.section{padding:104px 0}
.section--tight{padding:80px 0}
.section--paper{background:var(--paper)}
.section--white{background:var(--white)}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  margin-bottom:48px;
  flex-wrap:wrap;
}
.eyebrow{
  display:block;
  font-size:12px;
  letter-spacing:.18em;
  color:var(--accent-500);
  margin-bottom:12px;
}
.section-title{
  font-size:clamp(24px,2.8vw,34px);
  line-height:1.24;
  font-weight:600;
  letter-spacing:-.02em;
  color:var(--ink-900);
}
.section-desc{
  margin-top:14px;
  max-width:660px;
  color:var(--muted);
  font-size:15px;
}
.section-link{
  position:relative;
  font-size:14px;
  color:var(--ink-900);
  padding-bottom:2px;
  white-space:nowrap;
}
.section-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:100%;
  height:1px;
  background:var(--accent-500);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s ease;
}
.section-link:hover{color:var(--accent-500)}
.section-link:hover::after{transform:scaleX(1)}

/* ============ 两列大卡 ============ */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:34px;
}
.feature-card{
  display:flex;
  flex-direction:column;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-rest);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.feature-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:#DCD5C7;
}
.feature-media{
  position:relative;
  aspect-ratio:16/9;
  background:var(--line);
  overflow:hidden;
}
.feature-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.feature-card:hover .feature-media img{transform:scale(1.04)}
.feature-media::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:46%;
  background:linear-gradient(180deg,rgba(11,14,13,0) 0%,rgba(11,14,13,.62) 100%);
  pointer-events:none;
}
.feature-badges{
  position:absolute;
  top:14px;
  left:14px;
  z-index:2;
  display:flex;
  gap:8px;
  flex-wrap:wrap;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:11.5px;
  letter-spacing:.08em;
  padding:4px 11px;
  border-radius:999px;
  background:rgba(247,245,240,.92);
  color:var(--ink-900);
  line-height:1.5;
}
.badge--accent{background:var(--accent-500);color:#fff}
.badge--dark{background:rgba(11,14,13,.72);color:var(--paper);border:1px solid rgba(229,224,214,.22)}
.feature-duration{
  position:absolute;
  right:14px;
  bottom:14px;
  z-index:2;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--paper);
  background:rgba(11,14,13,.68);
  border-radius:6px;
  padding:3px 10px;
}
.feature-body{
  padding:24px 26px 26px;
  display:flex;
  flex-direction:column;
  gap:12px;
  flex:1;
}
.feature-title{
  font-size:20px;
  line-height:1.4;
  font-weight:600;
  letter-spacing:-.01em;
  color:var(--ink-900);
}
.feature-card:hover .feature-title{color:var(--brand-700)}
.feature-text{
  font-size:14.5px;
  color:var(--muted);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.feature-meta{
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--muted);
}
.feature-meta .dot{color:var(--accent-500);margin:0 6px}

/* ============ 指标条 ============ */
.metrics{
  margin-top:56px;
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--white);
}
.metric{
  padding:38px 28px;
  border-right:1px solid var(--line);
}
.metric:last-child{border-right:0}
.metric-num{
  font-size:40px;
  font-weight:600;
  letter-spacing:-.03em;
  line-height:1.1;
  color:var(--ink-900);
}
.metric-num small{font-size:15px;font-weight:500;color:var(--muted);margin-left:6px;letter-spacing:0}
.metric-label{
  margin-top:10px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--muted);
}

/* ============ 图文交错 ============ */
.split{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:56px;
  align-items:center;
}
.split-media{grid-column:span 6;position:relative}
.split-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--radius-card);
  background:var(--line);
}
.split-media::after{
  content:"";
  position:absolute;
  inset:0;
  border-radius:var(--radius-card);
  border:1px solid rgba(11,14,13,.08);
  pointer-events:none;
}
.split-body{grid-column:span 6}
.split--reverse .split-media{order:2}
.split--reverse .split-body{order:1}
.split-text{
  margin-top:18px;
  color:var(--muted);
  font-size:15.5px;
}
.rule-list{margin-top:32px;border-top:1px solid var(--line)}
.rule-item{
  display:flex;
  align-items:flex-start;
  gap:20px;
  padding:22px 0;
  border-bottom:1px solid var(--line);
}
.rule-index{
  font-size:13px;
  font-weight:600;
  letter-spacing:.1em;
  color:var(--accent-500);
  padding-top:4px;
  min-width:34px;
}
.rule-title{font-size:16.5px;font-weight:600;color:var(--ink-900)}
.rule-desc{font-size:14.5px;color:var(--muted);margin-top:4px}

/* ============ 标签墙 ============ */
.tagwall{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:28px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 18px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--white);
  font-size:14px;
  color:var(--ink-900);
  transition:border-color .24s ease,color .24s ease,transform .24s ease;
}
.tag i{font-size:11px;color:var(--accent-500)}
.tag:hover{border-color:var(--accent-500);color:var(--accent-500);transform:translateY(-2px)}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:16px;
  padding:24px 0;
  background:none;
  border:0;
  text-align:left;
  cursor:pointer;
  font-size:17px;
  font-weight:600;
  letter-spacing:-.01em;
  color:var(--ink-900);
  transition:color .24s ease;
}
.faq-q:hover{color:var(--brand-700)}
.faq-dot{
  width:16px;
  height:16px;
  border-radius:4px;
  background:var(--accent-500);
  flex:0 0 auto;
}
.faq-q span.faq-text{flex:1}
.faq-arrow{
  font-size:13px;
  color:var(--muted);
  transition:transform .3s ease,color .3s ease;
}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);color:var(--accent-500)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .34s ease;
}
.faq-a-inner{
  padding:0 0 26px 32px;
  color:var(--muted);
  font-size:15px;
  max-width:720px;
}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--brand-700);
  padding:88px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  flex-wrap:wrap;
}
.cta-title{
  font-size:clamp(24px,3vw,34px);
  line-height:1.28;
  font-weight:600;
  letter-spacing:-.02em;
  color:var(--paper);
  max-width:620px;
}
.cta-sub{
  margin-top:12px;
  color:rgba(247,245,240,.7);
  font-size:15px;
  max-width:560px;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:48px;
  padding:0 28px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .24s ease,color .24s ease,border-color .24s ease,transform .24s ease;
}
.btn-accent{
  background:var(--accent-500);
  color:#fff;
  border-color:var(--accent-500);
}
.btn-accent:hover{
  background:#B44F30;
  border-color:#B44F30;
  color:#fff;
  transform:translateY(-2px);
}
.btn-ghost{
  background:transparent;
  color:var(--paper);
  border-color:rgba(229,224,214,.42);
}
.btn-ghost:hover{
  background:var(--paper);
  color:var(--ink-900);
  border-color:var(--paper);
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-900);
  color:rgba(247,245,240,.78);
  padding:72px 0 0;
  border-top:1px solid rgba(229,224,214,.14);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:44px;
  padding-bottom:56px;
}
.footer-brand{
  font-size:17px;
  font-weight:700;
  color:var(--paper);
  letter-spacing:-.01em;
  margin-bottom:16px;
}
.footer-brand .sep{color:var(--accent-500)}
.footer-note{
  font-size:14px;
  color:rgba(247,245,240,.6);
  max-width:360px;
}
.footer-title{
  font-size:13px;
  letter-spacing:.14em;
  font-weight:600;
  color:var(--paper);
  margin-bottom:18px;
}
.footer-links li{margin-bottom:12px}
.footer-links a{
  font-size:14px;
  color:rgba(247,245,240,.66);
  transition:color .24s ease;
}
.footer-links a:hover{color:var(--accent-500)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  padding:24px 0 30px;
  border-top:1px solid rgba(229,224,214,.12);
  font-size:12.5px;
  letter-spacing:.04em;
  color:rgba(247,245,240,.5);
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .7s ease,transform .7s ease}
.reveal.is-in{opacity:1;transform:none}
.banner-tag,.banner-title,.banner-sub{opacity:0;transform:translateY(12px);animation:heroIn .8s ease forwards}
.banner-tag{animation-delay:.05s}
.banner-title{animation-delay:.16s}
.banner-sub{animation-delay:.28s}
@keyframes heroIn{to{opacity:1;transform:none}}

@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .banner-tag,.banner-title,.banner-sub{opacity:1;transform:none;animation:none}
  .feature-card:hover{transform:none}
  .feature-card:hover .feature-media img{transform:none}
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .feature-grid{gap:28px}
  .split{gap:44px}
}
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:fixed;
    top:0;
    right:0;
    width:min(86vw,340px);
    height:100vh;
    background:var(--ink-900);
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:96px 28px 40px;
    transform:translateX(100%);
    transition:transform .36s cubic-bezier(.4,0,.2,1);
    border-left:1px solid rgba(229,224,214,.14);
    overflow-y:auto;
    z-index:75;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-link{
    width:100%;
    padding:18px 0;
    font-size:20px;
    font-weight:500;
    color:var(--paper) !important;
    border-bottom:1px solid rgba(229,224,214,.12);
  }
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--accent-500) !important}
  .site-header{background:rgba(247,245,240,.94)}
  .section{padding:76px 0}
  .section--tight{padding:64px 0}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line)}
  .split-media,.split-body{grid-column:span 12}
  .split--reverse .split-media{order:1}
  .split--reverse .split-body{order:2}
  .split{gap:34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  .grid-container{padding-left:18px;padding-right:18px}
  .nav-inner{height:64px}
  .brand{font-size:15.5px}
  .brand-sub{display:inline}
  .page-banner{min-height:280px}
  .banner-inner{padding-top:76px;padding-bottom:34px}
  .banner-title{font-size:28px}
  .banner-sub{font-size:14.5px}
  .feature-grid{grid-template-columns:minmax(0,1fr);gap:24px}
  .feature-body{padding:20px 20px 22px}
  .section{padding:60px 0}
  .section--tight{padding:52px 0}
  .section-head{margin-bottom:32px}
  .metrics{grid-template-columns:minmax(0,1fr)}
  .metric{border-right:0;border-bottom:1px solid var(--line);padding:26px 20px}
  .metric:last-child{border-bottom:0}
  .cta-band{padding:64px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .btn{width:100%;min-height:50px}
  .faq-q{font-size:16px;padding:20px 0}
  .faq-a-inner{padding-left:0;font-size:14.5px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:40px}
  .site-footer{padding-top:56px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
}
@media (max-width:519px){
  .metric-num{font-size:32px}
  .section-title{font-size:22px}
  .feature-title{font-size:18px}
  .split-text{font-size:15px}
}

/* roulang page: category2 */
:root{
  --ink-900:#0B0E0D;
  --ink-800:#121614;
  --paper:#F7F5F0;
  --brand-700:#1C3A34;
  --brand-500:#2E5C51;
  --accent-500:#C75B39;
  --accent-100:#F3E3DA;
  --line:#E5E0D6;
  --muted:#7C7A72;
  --text:#1A1C1B;
  --radius-card:10px;
  --radius-btn:6px;
  --radius-badge:999px;
  --shadow-1:0 1px 2px rgba(11,14,13,.06);
  --shadow-2:0 18px 42px -18px rgba(11,14,13,.35);
  --font-sans:"Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,serif;
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:600;letter-spacing:-.02em;line-height:1.25;margin:0}
p{margin:0}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:3px;border-radius:4px}

/* ---------- containers ---------- */
.grid-container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.narrow{max-width:720px}

/* ---------- header / nav ---------- */
.site-header{
  --nav-fg:#F1EFE9;
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease;
}
.site-header.is-scrolled{
  background:var(--ink-900);
  border-bottom-color:rgba(255,255,255,.12);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  height:76px;
}
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  font-size:17px;
  letter-spacing:.01em;
  color:var(--nav-fg);
  white-space:nowrap;
}
.brand strong{font-weight:600}
.brand .sep{opacity:.45}
.brand-sub{font-size:13px;letter-spacing:.14em;opacity:.72}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 0 10px;
  font-size:15px;
  color:var(--nav-fg);
  letter-spacing:.02em;
  transition:color .24s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;bottom:2px;
  height:2px;width:0;
  background:var(--accent-500);
  transition:width .24s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{width:60%}
.nav-link.is-active::after{width:60%}
.nav-tools{display:flex;align-items:center;gap:6px}
.nav-icon{
  display:grid;
  place-items:center;
  width:42px;height:42px;
  border-radius:50%;
  color:var(--nav-fg);
  transition:color .2s ease,background .2s ease;
}
.nav-icon:hover{color:var(--accent-500);background:rgba(255,255,255,.06)}
.nav-toggle{display:none}

/* ---------- mobile drawer ---------- */
.drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:min(86vw,360px);
  background:var(--ink-900);
  z-index:120;
  transform:translateX(100%);
  transition:transform .32s ease;
  padding:24px 24px 40px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(11,14,13,.6);
  opacity:0;visibility:hidden;
  transition:opacity .3s ease,visibility .3s ease;
  z-index:110;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid rgba(255,255,255,.12)}
.drawer-brand{color:#F1EFE9;font-size:16px}
.drawer-brand .sep{opacity:.45;margin:0 4px}
.drawer-brand .small{font-size:12px;letter-spacing:.14em;opacity:.7}
.drawer-nav{display:flex;flex-direction:column;margin-top:12px}
.drawer-nav a{
  color:#E9E6DF;
  font-size:19px;
  padding:18px 0;
  border-bottom:1px solid rgba(255,255,255,.1);
  font-family:var(--font-serif);
  transition:color .2s ease,padding-left .2s ease;
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--accent-500);padding-left:6px}

/* ---------- page banner ---------- */
.page-banner{
  position:relative;
  min-height:340px;
  display:flex;
  align-items:flex-end;
  padding:120px 0 44px;
  background-color:var(--ink-900);
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center 30%;
  color:#F3F1EB;
}
.page-banner::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,14,13,.88) 0%,rgba(11,14,13,.66) 42%,rgba(11,14,13,.94) 100%);
}
.page-banner .grid-container{position:relative;z-index:2}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--accent-100);
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent-500);display:inline-block}
.page-banner h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.18;
  color:#fff;
  max-width:820px;
}
.page-banner .banner-sub{
  margin-top:18px;
  max-width:640px;
  color:rgba(243,241,235,.82);
  font-size:16px;
}
.banner-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 26px;
  margin-top:26px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.16);
  font-size:13px;
  letter-spacing:.06em;
  color:rgba(243,241,235,.7);
}
.banner-meta strong{color:#fff;font-weight:600}

/* ---------- section basics ---------- */
.section{padding:100px 0}
.section--tight{padding:74px 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:44px;
}
.section-head h2{font-size:clamp(26px,3vw,36px)}
.section-head p{margin-top:12px;color:var(--muted);max-width:620px;font-size:15px}
.section-label{
  display:block;
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--accent-500);
  margin-bottom:14px;
}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- rail (horizontal shelf) ---------- */
.rail-controls{display:flex;gap:10px}
.rail-btn{
  width:44px;height:44px;
  display:grid;place-items:center;
  border:1px solid var(--line);
  border-radius:50%;
  color:var(--text);
  background:transparent;
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.rail-btn:hover{border-color:var(--accent-500);color:var(--accent-500);transform:translateY(-2px)}
.rail{
  display:flex;
  gap:22px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:6px 0 14px;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none}
.rail-card{
  flex:0 0 236px;
  scroll-snap-align:start;
}
.rail-thumb{
  position:relative;
  display:block;
  border-radius:var(--radius-card);
  overflow:hidden;
  background:var(--line);
  box-shadow:var(--shadow-1);
  transition:transform .32s ease,box-shadow .32s ease;
}
.rail-thumb::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:44%;
  background:linear-gradient(180deg,rgba(11,14,13,0),rgba(11,14,13,.72));
  pointer-events:none;
}
.rail-thumb img{
  width:100%;
  aspect-ratio:2/3;
  object-fit:cover;
  transition:transform .45s ease;
}
.rail-card:hover .rail-thumb{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.rail-card:hover .rail-thumb img{transform:scale(1.04)}
.rail-title{
  margin-top:16px;
  font-size:18px;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.rail-title a{background-image:linear-gradient(var(--accent-500),var(--accent-500));background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;transition:background-size .24s ease}
.rail-card:hover .rail-title a{background-size:100% 1px}
.rail-meta{margin-top:6px;font-size:13px;color:var(--muted);letter-spacing:.02em}
.badge{
  display:inline-block;
  margin-top:10px;
  padding:3px 10px;
  font-size:11px;
  letter-spacing:.08em;
  border-radius:var(--radius-badge);
  background:var(--accent-100);
  color:#8C3C22;
}
.badge--ghost{background:transparent;border:1px solid var(--line);color:var(--muted)}

/* ---------- rhythm / metrics ---------- */
.rhythm{background:var(--ink-900);color:#EFEDE7}
.rhythm .section-head h2{color:#fff}
.rhythm .section-head p{color:rgba(239,237,231,.68)}
.rhythm .section-label{color:var(--accent-500)}
.metric-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:28px;
  padding-bottom:52px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.metric-num{
  display:block;
  font-family:var(--font-sans);
  font-size:42px;
  font-weight:600;
  letter-spacing:-.03em;
  color:#fff;
  line-height:1.1;
}
.metric-num small{font-size:15px;font-weight:400;color:rgba(239,237,231,.6);margin-left:6px;letter-spacing:.04em}
.metric-label{margin-top:10px;font-size:14px;color:rgba(239,237,231,.66)}
.week-strip{
  display:grid;
  grid-template-columns:repeat(7,1fr);
  gap:14px;
  margin-top:52px;
}
.week-day{
  padding:22px 16px;
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-card);
  transition:border-color .24s ease,background .24s ease,transform .24s ease;
}
.week-day:hover{border-color:var(--accent-500);background:rgba(255,255,255,.03);transform:translateY(-4px)}
.week-day .day{font-size:13px;letter-spacing:.08em;color:rgba(239,237,231,.6)}
.week-day .count{display:block;margin-top:10px;font-size:24px;font-weight:600;color:#fff;font-family:var(--font-sans)}
.week-day .tip{margin-top:8px;font-size:12px;line-height:1.7;color:rgba(239,237,231,.55)}

/* ---------- split block ---------- */
.split{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:64px;
  align-items:center;
}
.split-media{
  border-radius:var(--radius-card);
  overflow:hidden;
  background:var(--line);
  box-shadow:var(--shadow-1);
}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.point-list{margin-top:26px;display:grid;gap:20px}
.point{
  display:grid;
  grid-template-columns:34px 1fr;
  gap:16px;
  padding-top:20px;
  border-top:1px solid var(--line);
}
.point:first-child{padding-top:0;border-top:0}
.point-num{
  font-family:var(--font-sans);
  font-size:13px;
  letter-spacing:.08em;
  color:var(--accent-500);
  padding-top:3px;
}
.point h3{font-size:19px;margin-bottom:8px}
.point p{color:var(--muted);font-size:15px}

/* ---------- ranking ---------- */
.rank-list{border-top:1px solid var(--line)}
.rank-item{
  display:grid;
  grid-template-columns:96px 120px 1fr auto;
  gap:28px;
  align-items:center;
  padding:30px 0;
  border-bottom:1px solid var(--line);
  transition:background .24s ease;
}
.rank-item:hover{background:rgba(28,58,52,.03)}
.rank-num{
  font-family:var(--font-sans);
  font-size:56px;
  line-height:1;
  font-weight:600;
  color:var(--line);
  letter-spacing:-.04em;
}
.rank-thumb{border-radius:8px;overflow:hidden;background:var(--line)}
.rank-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover}
.rank-body h3{font-size:20px;margin-bottom:8px}
.rank-body h3 a{background-image:linear-gradient(var(--accent-500),var(--accent-500));background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;transition:background-size .24s ease}
.rank-item:hover .rank-body h3 a{background-size:100% 1px}
.rank-body p{color:var(--muted);font-size:14.5px;max-width:560px}
.rank-score{
  text-align:right;
  font-family:var(--font-sans);
  font-size:30px;
  font-weight:600;
  color:var(--brand-700);
  letter-spacing:-.02em;
}
.rank-score span{display:block;font-size:11px;letter-spacing:.12em;color:var(--muted);font-weight:400;margin-top:4px}

/* ---------- voices ---------- */
.voices{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.voice{
  border-left:3px solid var(--accent-500);
  padding:6px 0 6px 22px;
}
.voice p{font-family:var(--font-serif);font-size:17px;line-height:1.85;color:var(--text)}
.voice cite{
  display:block;
  margin-top:16px;
  font-style:normal;
  font-size:12.5px;
  letter-spacing:.1em;
  color:var(--muted);
}

/* ---------- faq ---------- */
.accordion.custom-acc{border:0;background:transparent;margin:0}
.custom-acc .accordion-item{
  border:0;
  border-bottom:1px solid var(--line);
  background:transparent;
}
.custom-acc .accordion-title{
  display:flex;
  align-items:center;
  gap:14px;
  padding:24px 0;
  font-family:var(--font-serif);
  font-size:18px;
  color:var(--text);
  border:0;
  transition:color .2s ease;
}
.custom-acc .accordion-title::before{display:none !important}
.custom-acc .accordion-title:hover{color:var(--brand-500)}
.faq-dot{
  flex:0 0 16px;
  width:16px;height:16px;
  border-radius:4px;
  background:var(--accent-500);
}
.faq-arrow{
  margin-left:auto;
  font-size:13px;
  color:var(--muted);
  transition:transform .28s ease;
}
.custom-acc .accordion-item.is-active .faq-arrow{transform:rotate(180deg)}
.custom-acc .accordion-content{
  padding:0 0 26px 30px;
  border:0;
  color:var(--muted);
  font-size:15px;
  background:transparent;
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-700);
  color:#F4F2EC;
  padding:88px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
}
.cta-band h2{font-size:clamp(26px,3.2vw,38px);color:#fff;max-width:620px}
.cta-band p{margin-top:16px;color:rgba(244,242,236,.75);max-width:560px;font-size:15px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--radius-btn);
  font-size:15px;
  letter-spacing:.02em;
  transition:background .24s ease,color .24s ease,border-color .24s ease,transform .2s ease;
  white-space:nowrap;
}
.btn--accent{background:var(--accent-500);color:#fff}
.btn--accent:hover{background:#B04E2F;transform:translateY(-2px)}
.btn--solid{background:var(--brand-700);color:#fff}
.btn--solid:hover{background:var(--ink-900);transform:translateY(-2px)}
.btn--ghost{border:1px solid rgba(255,255,255,.42);color:#fff}
.btn--ghost:hover{background:#fff;color:var(--ink-900);border-color:#fff}
.btn--outline{border:1px solid var(--line);color:var(--text)}
.btn--outline:hover{border-color:var(--accent-500);color:var(--accent-500)}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink-900);
  color:rgba(233,230,223,.72);
  padding:76px 0 34px;
  border-top:1px solid rgba(255,255,255,.1);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:44px;
  padding-bottom:52px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand{
  color:#fff;
  font-family:var(--font-serif);
  font-size:19px;
  margin-bottom:16px;
}
.footer-brand .sep{opacity:.4;margin:0 4px}
.footer-note{font-size:14px;line-height:1.9;max-width:340px;color:rgba(233,230,223,.6)}
.footer-title{
  font-family:var(--font-sans);
  font-size:13px;
  letter-spacing:.14em;
  color:#fff;
  margin-bottom:18px;
  font-weight:600;
}
.footer-links li{margin-bottom:11px}
.footer-links a{
  font-size:14px;
  color:rgba(233,230,223,.68);
  transition:color .2s ease,padding-left .2s ease;
}
.footer-links a:hover{color:var(--accent-500);padding-left:4px}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  padding-top:26px;
  font-size:12.5px;
  letter-spacing:.04em;
  color:rgba(233,230,223,.5);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media screen and (max-width:1180px){
  .rank-item{grid-template-columns:72px 104px 1fr auto;gap:22px}
  .rank-num{font-size:46px}
}
@media screen and (max-width:1024px){
  .nav-links{display:none}
  .nav-toggle{display:grid}
  .section{padding:80px 0}
  .split{grid-template-columns:1fr;gap:40px}
  .metric-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .week-strip{grid-template-columns:repeat(4,1fr)}
  .voice-grid{grid-template-columns:1fr;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:28px}
}
@media screen and (max-width:768px){
  body{font-size:15px}
  .nav-inner{height:66px}
  .brand{font-size:16px}
  .brand-sub{font-size:12px;letter-spacing:.1em}
  .page-banner{min-height:300px;padding:104px 0 36px;background-position:center 24%}
  .section{padding:60px 0}
  .section--tight{padding:52px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:32px}
  .rank-item{grid-template-columns:56px 92px 1fr;grid-template-areas:"num thumb body" ". . score";row-gap:14px}
  .rank-num{grid-area:num;font-size:38px}
  .rank-thumb{grid-area:thumb}
  .rank-body{grid-area:body}
  .rank-score{grid-area:score;text-align:left;font-size:24px}
  .rank-score span{display:inline;margin-left:8px}
  .week-strip{grid-template-columns:repeat(2,1fr);gap:12px}
  .rail-card{flex:0 0 176px}
  .cta-band{padding:64px 0}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:10px}
}
@media screen and (max-width:520px){
  .grid-container{padding-left:18px;padding-right:18px}
  .metric-grid{grid-template-columns:1fr;gap:26px}
  .metric-num{font-size:34px}
  .rail-card{flex:0 0 158px}
  .rail{gap:16px}
  .btn{width:100%;min-height:48px}
  .rail-controls{display:none}
  .point{grid-template-columns:26px 1fr;gap:12px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --ink-900:#0B0E0D;
  --ink-800:#121614;
  --paper:#F7F5F0;
  --brand-700:#1C3A34;
  --brand-500:#2E5C51;
  --accent-500:#C75B39;
  --accent-100:#F3E3DA;
  --line:#E5E0D6;
  --muted:#7C7A72;
  --text:#1A1C1B;
  --card:#FFFFFF;
  --r-card:10px;
  --r-btn:6px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,14,13,.06);
  --sh-2:0 18px 42px -18px rgba(11,14,13,.35);
  --w:1240px;
  --font-sans:"Inter","Helvetica Neue",-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-serif:"Songti SC","Source Han Serif SC","Noto Serif SC",Georgia,serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .24s ease}
a:hover{color:var(--accent-500)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:3px}
.grid-container{max-width:var(--w);margin:0 auto;padding-left:24px;padding-right:24px;width:100%}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(11,14,13,0);
  border-bottom:1px solid rgba(229,224,214,.22);
  transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
}
.site-header.is-scrolled{
  background:var(--ink-900);
  border-bottom-color:rgba(229,224,214,.16);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px}
.brand{display:flex;align-items:baseline;gap:8px;color:#fff;font-size:17px;letter-spacing:.01em;white-space:nowrap}
.brand strong{font-weight:700;letter-spacing:.02em}
.brand .sep{color:var(--accent-500);font-weight:700}
.brand-sub{font-size:13px;color:rgba(255,255,255,.62);letter-spacing:.14em}
.brand:hover{color:#fff}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-link{
  position:relative;
  font-size:14.5px;
  color:rgba(255,255,255,.78);
  letter-spacing:.03em;
  padding:6px 0;
  transition:color .24s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;
  background:var(--accent-500);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .24s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(.6)}
.nav-link.is-active{color:#fff}
.nav-link.is-active::after{transform:scaleX(.6)}
.nav-tools{display:flex;align-items:center;gap:10px}
.nav-icon{
  width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(229,224,214,.26);border-radius:var(--r-btn);
  color:rgba(255,255,255,.85);font-size:15px;background:transparent;cursor:pointer;
  transition:border-color .24s ease,color .24s ease,background .24s ease;
}
.nav-icon:hover{border-color:var(--accent-500);color:var(--accent-500)}
.nav-toggle{display:none}
.nav-scrim{
  position:fixed;inset:0;background:rgba(11,14,13,.55);
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;z-index:70;
}
.nav-scrim.is-on{opacity:1;visibility:visible}

/* ---------- 页首 Banner ---------- */
.page-banner{
  position:relative;
  min-height:320px;
  display:flex;
  align-items:flex-end;
  padding:132px 0 52px;
  background-image:
    linear-gradient(180deg,rgba(11,14,13,.92) 0%,rgba(11,14,13,.72) 42%,rgba(11,14,13,.9) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center 26%;
  color:#fff;
  overflow:hidden;
}
.banner-inner{position:relative;z-index:2;max-width:860px;width:100%}
.crumbs{display:flex;align-items:center;gap:10px;font-size:12.5px;letter-spacing:.08em;color:rgba(255,255,255,.6);margin-bottom:22px}
.crumbs a{color:rgba(255,255,255,.72)}
.crumbs a:hover{color:var(--accent-500)}
.crumb-sep{color:rgba(255,255,255,.32)}
.eyebrow{
  display:inline-block;
  font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--accent-500);font-weight:600;margin-bottom:16px;
}
.eyebrow-light{color:var(--accent-500)}
.page-banner h1{
  font-family:var(--font-serif);
  font-size:clamp(28px,4vw,48px);
  line-height:1.16;
  letter-spacing:-.02em;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
  animation:riseIn .7s ease both;
}
.banner-sub{
  font-size:16px;color:rgba(255,255,255,.78);max-width:620px;
  animation:riseIn .7s .12s ease both;
}
@keyframes riseIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-head{margin-bottom:52px;max-width:720px}
.section-head h2{
  font-family:var(--font-serif);
  font-size:clamp(24px,3vw,36px);
  line-height:1.25;letter-spacing:-.02em;font-weight:600;margin-bottom:14px;
}
.section-head p{color:var(--muted);font-size:15.5px}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- 指标卡 ---------- */
.metric-grid{margin-top:-8px}
.metric{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px 24px 26px;
  height:100%;
  box-shadow:var(--sh-1);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D8D2C4}
.metric .label{font-size:12px;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;display:block;margin-bottom:14px}
.metric .value{
  font-family:var(--font-serif);font-size:26px;font-weight:600;color:var(--brand-700);
  display:block;margin-bottom:10px;letter-spacing:-.01em;
}
.metric .desc{font-size:14.5px;color:var(--muted);line-height:1.85}

/* ---------- 交错图文列表 ---------- */
.media-row{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
  padding:44px 0;
  border-top:1px solid var(--line);
}
.media-row:last-child{border-bottom:1px solid var(--line)}
.media-row.is-flip .media-figure{order:2}
.media-figure{position:relative;border-radius:var(--r-card);overflow:hidden;background:var(--line)}
.media-figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  transition:transform .5s ease;
}
.media-row:hover .media-figure img{transform:scale(1.04)}
.media-figure::after{
  content:"";position:absolute;inset:auto 0 0 0;height:52%;
  background:linear-gradient(180deg,rgba(11,14,13,0),rgba(11,14,13,.62));
  pointer-events:none;
}
.media-index{
  font-size:13px;letter-spacing:.2em;color:var(--accent-500);font-weight:700;
  display:block;margin-bottom:14px;
}
.media-body h3{
  font-family:var(--font-serif);
  font-size:22px;font-weight:600;letter-spacing:-.01em;margin-bottom:14px;line-height:1.35;
}
.media-body p{font-size:15.5px;color:#393E3B;margin-bottom:18px}
.point-list{margin-bottom:20px}
.point-list li{
  position:relative;
  padding-left:20px;
  font-size:14.5px;
  color:var(--muted);
  padding-top:9px;padding-bottom:9px;
  border-bottom:1px solid var(--line);
}
.point-list li:last-child{border-bottom:0}
.point-list li::before{
  content:"";position:absolute;left:0;top:19px;
  width:6px;height:6px;border-radius:2px;background:var(--accent-500);
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.08em;color:var(--muted);background:#fff;
}

/* ---------- 场景 ---------- */
.scene-list{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line)}
.scene{
  padding:36px 32px 36px 0;
  border-right:1px solid var(--line);
  transition:transform .28s ease;
}
.scene:last-child{border-right:0;padding-right:0}
.scene:nth-child(2){padding-left:32px}
.scene:nth-child(3){padding-left:32px}
.scene:hover{transform:translateY(-4px)}
.scene h3{font-size:18px;font-weight:600;margin-bottom:12px;font-family:var(--font-serif)}
.scene p{font-size:14.5px;color:var(--muted);line-height:1.85}
.scene .num{font-size:13px;letter-spacing:.2em;color:var(--accent-500);font-weight:700;display:block;margin-bottom:16px}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;border-top:1px solid var(--line);padding-top:44px}
.step h3{font-size:17px;font-weight:600;margin-bottom:10px}
.step p{font-size:14.5px;color:var(--muted);line-height:1.85}
.step .big-num{
  font-family:var(--font-serif);
  font-size:46px;line-height:1;font-weight:600;color:var(--line);
  display:block;margin-bottom:18px;letter-spacing:-.03em;
}
.step:hover .big-num{color:var(--accent-100)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;border-top:1px solid var(--line)}
.accordion{border:0;background:transparent;margin:0}
.accordion-item{border-bottom:1px solid var(--line);border-left:0;border-right:0;border-top:0}
.accordion-title{
  position:relative;
  border:0;background:transparent;
  padding:24px 48px 24px 32px;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
  transition:color .24s ease;
}
.accordion-title::before,.accordion-title::after{display:none!important}
.accordion-title:hover{color:var(--accent-500);background:transparent}
.faq-dot{
  display:inline-block;width:16px;height:16px;border-radius:4px;
  background:var(--accent-500);margin-right:16px;vertical-align:-2px;
}
.faq-arrow{
  position:absolute;right:14px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--muted);
  transition:transform .3s ease,color .3s ease;
}
.accordion-title.is-active .faq-arrow{transform:translateY(-50%) rotate(180deg);color:var(--accent-500)}
.accordion-content{
  border:0;background:transparent;
  padding:0 48px 26px 32px;color:var(--muted);font-size:15px;line-height:1.95;
}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--brand-700);color:#fff;padding:88px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:44px;flex-wrap:wrap}
.cta-inner h2{
  font-family:var(--font-serif);
  font-size:clamp(24px,3vw,36px);font-weight:600;letter-spacing:-.02em;line-height:1.25;margin-bottom:12px;
}
.cta-inner p{color:rgba(255,255,255,.72);font-size:15px;max-width:560px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 28px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:background .26s ease,color .26s ease,border-color .26s ease,transform .26s ease;
  min-height:44px;
}
.btn:active{transform:translateY(1px)}
.btn-accent{background:var(--accent-500);color:#fff;border-color:var(--accent-500)}
.btn-accent:hover{background:#fff;color:var(--brand-700);border-color:#fff}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost:hover{background:#fff;color:var(--ink-900);border-color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:80px 0 34px;border-top:1px solid rgba(229,224,214,.14)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px;padding-bottom:52px;border-bottom:1px solid rgba(229,224,214,.14)}
.footer-brand{color:#fff;font-size:17px;font-weight:700;margin-bottom:16px;letter-spacing:.02em}
.footer-brand .sep{color:var(--accent-500)}
.footer-note{font-size:14px;line-height:1.95;color:rgba(255,255,255,.58);max-width:340px}
.footer-title{font-size:13px;letter-spacing:.14em;color:#fff;margin-bottom:20px;font-weight:600}
.footer-links li{margin-bottom:12px}
.footer-links a{font-size:14.5px;color:rgba(255,255,255,.66)}
.footer-links a:hover{color:var(--accent-500)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding-top:26px;font-size:12.5px;color:rgba(255,255,255,.44);letter-spacing:.02em;
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .65s ease,transform .65s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:min(84vw,340px);
    background:var(--ink-900);
    flex-direction:column;align-items:flex-start;gap:0;
    padding:96px 28px 40px;
    transform:translateX(102%);
    transition:transform .34s cubic-bezier(.22,.61,.36,1);
    z-index:75;overflow-y:auto;
  }
  .nav-links.is-open{transform:none}
  .nav-links .nav-link{
    width:100%;font-size:19px;color:rgba(255,255,255,.9);
    padding:18px 0;border-bottom:1px solid rgba(229,224,214,.12);
  }
  .nav-links .nav-link::after{display:none}
  .nav-links .nav-link.is-active{color:var(--accent-500)}
  .nav-links .nav-link.is-active::before{
    content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
    background:var(--accent-500);margin-right:12px;vertical-align:3px;
  }
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .steps{grid-template-columns:repeat(2,1fr);gap:36px}
}
@media (max-width:900px){
  .media-row{grid-template-columns:1fr;gap:28px;padding:36px 0}
  .media-row.is-flip .media-figure{order:0}
  .scene-list{grid-template-columns:1fr}
  .scene,.scene:nth-child(2),.scene:nth-child(3){
    padding:28px 0;border-right:0;border-bottom:1px solid var(--line);
  }
  .scene:last-child{border-bottom:0}
}
@media (max-width:768px){
  body{font-size:15.5px;line-height:1.88}
  .grid-container{padding-left:18px;padding-right:18px}
  .nav-inner{height:64px}
  .brand{font-size:15.5px}
  .brand-sub{display:inline;font-size:12px}
  .nav-icon{width:40px;height:40px}
  .section{padding:60px 0}
  .section-head{margin-bottom:34px}
  .page-banner{min-height:280px;padding:112px 0 40px;background-position:center 20%}
  .media-body h3{font-size:19px}
  .metric{padding:22px 20px}
  .cta-band{padding:64px 0}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:26px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;gap:10px}
  .accordion-title{padding:20px 42px 20px 30px;font-size:16px}
  .accordion-content{padding:0 30px 22px 30px}
  .steps{grid-template-columns:1fr;gap:30px}
  .step .big-num{font-size:38px;margin-bottom:12px}
}
@media (max-width:520px){
  .nav-links{width:88vw}
  .page-banner{padding:104px 0 34px;min-height:260px}
  .banner-sub{font-size:15px}
  .btn{width:100%}
  .cta-inner .btn{width:auto}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --ink-900:#0B0E0D;
  --ink-800:#121614;
  --paper:#F7F5F0;
  --brand-700:#1C3A34;
  --brand-500:#2E5C51;
  --accent-500:#C75B39;
  --accent-100:#F3E3DA;
  --line:#E5E0D6;
  --muted:#7C7A72;
  --text:#1A1C1B;
  --radius-card:10px;
  --radius-btn:6px;
  --shadow-1:0 1px 2px rgba(11,14,13,.06);
  --shadow-2:0 18px 42px -18px rgba(11,14,13,.35);
  --container:1240px;
  --font-sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-serif:"Noto Serif SC","Songti SC",Georgia,serif;
  --section-y:110px;
  --section-y-sm:60px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  letter-spacing:0;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.18;letter-spacing:-.02em}
h1{font-family:var(--font-serif)}
h2{font-family:var(--font-serif);font-size:clamp(26px,3.2vw,38px)}
h3{font-size:20px}
p{margin:0}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:3px}
::selection{background:var(--accent-500);color:#fff}

/* ---------- Foundation 覆盖 ---------- */
.grid-container{
  max-width:var(--container) !important;
  width:100%;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.grid-container.full{padding-left:0;padding-right:0;max-width:100% !important}
.button,.button.primary,.button.secondary{font-family:var(--font-sans)}
.accordion,.accordion-item,.card{border:0;background:none;box-shadow:none;margin:0}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section-y) 0}
.section.tight{padding:72px 0}
.section.dark{background:var(--ink-900);color:#fff}
.section.brand{background:var(--brand-700);color:#fff}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:48px;
}
.section-head .eyebrow{
  display:block;
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
  margin-bottom:14px;
}
.section-head p.lead{
  max-width:560px;
  color:var(--muted);
  font-size:15.5px;
  line-height:1.85;
  margin-top:14px;
}
.dark .section-head p.lead,.brand .section-head p.lead{color:rgba(255,255,255,.68)}
.dark .section-head .eyebrow,.brand .section-head .eyebrow{color:rgba(255,255,255,.55)}
.hairline{height:1px;background:var(--line);border:0;margin:0}
.dark .hairline{background:rgba(255,255,255,.14)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  background:transparent;
  border-bottom:1px solid rgba(255,255,255,.14);
  transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
}
.site-header.is-solid{
  background:var(--ink-900);
  border-bottom-color:rgba(255,255,255,.14);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  height:76px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand strong{font-weight:700;letter-spacing:.02em}
.brand .sep{color:rgba(255,255,255,.35)}
.brand-sub{font-weight:400;color:rgba(255,255,255,.7);font-size:14px}
.nav-links{
  display:flex;
  align-items:center;
  gap:34px;
}
.nav-link{
  position:relative;
  font-size:14.5px;
  color:rgba(255,255,255,.76);
  padding:8px 0;
  transition:color .22s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  height:2px;width:0;
  background:var(--accent-500);
  transition:width .24s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{width:60%}
.nav-link.is-active{color:#fff}
.nav-link.is-active::after{width:60%}
.nav-tools{display:flex;align-items:center;gap:8px}
.nav-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;height:42px;
  border-radius:50%;
  color:rgba(255,255,255,.82);
  font-size:15px;
  transition:color .22s ease,background .22s ease;
}
.nav-icon:hover{color:#fff;background:rgba(255,255,255,.09)}
.nav-toggle{display:none}

/* ---------- 分类 Banner ---------- */
.cat-banner{
  position:relative;
  min-height:320px;
  display:flex;
  align-items:flex-end;
  padding:150px 0 54px;
  color:#fff;
  background-image:
    linear-gradient(180deg,rgba(11,14,13,.86) 0%,rgba(11,14,13,.62) 38%,rgba(11,14,13,.92) 100%),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover,cover;
  background-position:center top,center 22%;
  background-repeat:no-repeat,no-repeat;
}
.cat-banner .crumb{
  font-size:12.5px;
  letter-spacing:.08em;
  color:rgba(255,255,255,.6);
  margin-bottom:22px;
}
.cat-banner .crumb a{color:rgba(255,255,255,.6)}
.cat-banner .crumb a:hover{color:var(--accent-500)}
.cat-banner .crumb span{margin:0 10px;color:rgba(255,255,255,.32)}
.cat-banner h1{
  font-size:clamp(30px,4.4vw,54px);
  max-width:900px;
  margin-bottom:18px;
}
.cat-banner .banner-desc{
  max-width:640px;
  color:rgba(255,255,255,.76);
  font-size:15.5px;
  line-height:1.85;
}
.banner-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}
.tag{
  display:inline-flex;
  align-items:center;
  padding:5px 13px;
  border:1px solid rgba(255,255,255,.24);
  border-radius:999px;
  font-size:12.5px;
  letter-spacing:.04em;
  color:rgba(255,255,255,.82);
}

/* ---------- 分类索引条 ---------- */
.cat-strip{
  background:#fff;
  border-bottom:1px solid var(--line);
}
.cat-strip .strip-inner{
  display:flex;
  align-items:center;
  gap:30px;
  height:64px;
  overflow-x:auto;
  scrollbar-width:none;
}
.cat-strip .strip-inner::-webkit-scrollbar{display:none}
.strip-label{
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
  white-space:nowrap;
}
.strip-link{
  position:relative;
  font-size:14.5px;
  color:var(--muted);
  white-space:nowrap;
  padding:6px 0;
  transition:color .22s ease;
}
.strip-link::before{
  content:"";
  position:absolute;
  left:-14px;top:50%;
  width:5px;height:5px;
  border-radius:50%;
  background:var(--accent-500);
  transform:translateY(-50%) scale(0);
  transition:transform .22s ease;
}
.strip-link:hover{color:var(--text)}
.strip-link.is-active{color:var(--text);font-weight:600}
.strip-link.is-active::before{transform:translateY(-50%) scale(1)}

/* ---------- 指标卡 ---------- */
.metric-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
}
.metric{
  background:#fff;
  padding:34px 30px;
  transition:transform .28s ease,box-shadow .28s ease;
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.metric .num{
  font-size:44px;
  font-weight:600;
  letter-spacing:-.03em;
  line-height:1;
  color:var(--brand-700);
  font-family:var(--font-sans);
}
.metric .num em{font-style:normal;font-size:16px;color:var(--muted);margin-left:6px;letter-spacing:0}
.metric h3{margin:16px 0 10px;font-size:17px}
.metric p{color:var(--muted);font-size:14.5px;line-height:1.8}

/* ---------- 编号列表（本页核心版式） ---------- */
.guide-rows{border-top:1px solid var(--line)}
.guide-row{
  display:grid;
  grid-template-columns:86px 116px minmax(0,1fr) 150px;
  align-items:center;
  gap:32px;
  padding:28px 0;
  border-bottom:1px solid var(--line);
  transition:background .28s ease;
}
.guide-row:hover{background:#fff}
.guide-row .row-num{
  font-size:44px;
  font-weight:600;
  line-height:1;
  letter-spacing:-.03em;
  color:var(--line);
  transition:color .28s ease;
}
.guide-row:hover .row-num{color:var(--accent-500)}
.row-thumb{
  width:116px;
  aspect-ratio:2/3;
  border-radius:8px;
  overflow:hidden;
  background:var(--line);
  box-shadow:var(--shadow-1);
}
.row-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.guide-row:hover .row-thumb img{transform:scale(1.04)}
.row-body h3{font-size:19px;margin-bottom:8px}
.row-body h3 a{transition:color .22s ease}
.row-body h3 a:hover{color:var(--accent-500)}
.row-body p{color:var(--muted);font-size:14.5px;line-height:1.8;max-width:620px}
.row-tags{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.chip{
  display:inline-flex;
  align-items:center;
  padding:3px 10px;
  background:var(--accent-100);
  color:#8A3B22;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.02em;
}
.row-side{
  text-align:right;
  color:var(--muted);
  font-size:13px;
  letter-spacing:.06em;
}
.row-side .arrow{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  margin-top:12px;
  width:34px;height:34px;
  border:1px solid var(--line);
  border-radius:50%;
  color:var(--text);
  transition:background .24s ease,color .24s ease,border-color .24s ease;
}
.guide-row:hover .row-side .arrow{background:var(--brand-700);border-color:var(--brand-700);color:#fff}

/* ---------- 图文分栏（场景） ---------- */
.split{
  display:grid;
  grid-template-columns:5fr 6fr;
  gap:64px;
  align-items:center;
}
.split.reverse{grid-template-columns:6fr 5fr}
.split-media{
  aspect-ratio:4/5;
  border-radius:var(--radius-card);
  overflow:hidden;
  background:var(--line);
  box-shadow:var(--shadow-1);
}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.split-media:hover img{transform:scale(1.04)}
.split-body h2{margin-bottom:20px}
.split-body > p{color:var(--muted);font-size:15.5px;margin-bottom:22px}
.plain-list li{
  position:relative;
  padding:16px 0 16px 26px;
  border-bottom:1px solid var(--line);
  font-size:15.5px;
  color:var(--text);
}
.plain-list li::before{
  content:"";
  position:absolute;
  left:0;top:26px;
  width:8px;height:8px;
  border-radius:4px;
  background:var(--accent-500);
}
.plain-list li span{display:block;color:var(--muted);font-size:14px;margin-top:6px}

/* ---------- 流程 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:28px;
  counter-reset:step;
}
.step{
  padding:30px 26px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  transition:transform .28s ease,box-shadow .28s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.step .step-no{
  font-size:12px;
  letter-spacing:.16em;
  color:var(--accent-500);
  margin-bottom:18px;
  display:block;
}
.step h3{font-size:18px;margin-bottom:10px}
.step p{color:var(--muted);font-size:14.5px;line-height:1.8}

/* ---------- 引用/媒体区 ---------- */
.quote-band{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:40px;
}
.quote-item blockquote{
  margin:0 0 18px;
  padding-left:18px;
  border-left:3px solid var(--accent-500);
  font-size:16px;
  color:rgba(255,255,255,.86);
  line-height:1.85;
}
.quote-item cite{
  font-style:normal;
  font-size:12.5px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:rgba(255,255,255,.5);
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  display:flex;
  align-items:center;
  gap:16px;
  width:100%;
  padding:24px 0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  transition:color .22s ease;
}
.faq-q:hover{color:var(--accent-500)}
.faq-q .mark{
  flex:0 0 auto;
  width:16px;height:16px;
  border-radius:4px;
  background:var(--accent-500);
}
.faq-q .chev{
  margin-left:auto;
  color:var(--muted);
  font-size:14px;
  transition:transform .3s ease,color .22s ease;
}
.faq-item.is-open .chev{transform:rotate(180deg);color:var(--accent-500)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .34s ease;
}
.faq-a p{
  color:var(--muted);
  font-size:15px;
  line-height:1.9;
  padding:0 0 26px 32px;
  max-width:820px;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:var(--brand-700);
  color:#fff;
  padding:88px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:48px;
}
.cta-inner h2{font-size:clamp(24px,3vw,34px);max-width:640px}
.cta-inner p{color:rgba(255,255,255,.7);font-size:15px;margin-top:16px;max-width:520px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:46px;
  padding:0 26px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  transition:background .24s ease,color .24s ease,border-color .24s ease,transform .24s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent-500);color:#fff;border:1px solid var(--accent-500)}
.btn-primary:hover{background:#B24E2F;border-color:#B24E2F;transform:translateY(-2px)}
.btn-solid{background:var(--brand-700);color:#fff;border:1px solid var(--brand-700)}
.btn-solid:hover{background:var(--brand-500);border-color:var(--brand-500);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.42)}
.btn-ghost:hover{background:#fff;color:var(--ink-900);border-color:#fff}
.btn-outline{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn-outline:hover{border-color:var(--brand-700);color:var(--brand-700)}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);
  color:#fff;
  border-top:1px solid rgba(255,255,255,.12);
  padding:76px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:48px;
}
.footer-brand{
  font-size:17px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-brand .sep{color:rgba(255,255,255,.35)}
.footer-note{
  color:rgba(255,255,255,.6);
  font-size:14px;
  line-height:1.85;
  max-width:340px;
}
.footer-title{
  font-size:13px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:rgba(255,255,255,.5);
  margin-bottom:20px;
  font-weight:600;
}
.footer-links li{margin-bottom:12px}
.footer-links a{
  color:rgba(255,255,255,.74);
  font-size:14.5px;
  transition:color .22s ease;
}
.footer-links a:hover{color:var(--accent-500)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  margin-top:60px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
  color:rgba(255,255,255,.45);
  font-size:13px;
}

/* ---------- 动效 ---------- */
.fade-up{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .7s ease,transform .7s ease;
}
.fade-up.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .fade-up{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  :root{--section-y:82px}
  .nav-links{gap:24px}
  .guide-row{grid-template-columns:64px 104px minmax(0,1fr);gap:24px}
  .row-side{grid-column:2 / -1;text-align:left;display:flex;align-items:center;gap:16px}
  .row-side .arrow{margin-top:0}
  .split,.split.reverse{grid-template-columns:1fr;gap:36px}
  .split-media{aspect-ratio:16/10}
  .split.reverse .split-media{order:-1}
  .steps{grid-template-columns:repeat(2,1fr)}
  .metric-grid{grid-template-columns:1fr}
  .quote-band{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media screen and (max-width:768px){
  :root{--section-y:var(--section-y-sm)}
  body{font-size:15.5px}
  .grid-container{padding-left:20px;padding-right:20px}
  .nav-inner{height:66px}
  .nav-links{
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    position:fixed;
    top:0;left:0;bottom:0;
    width:82%;
    max-width:340px;
    background:var(--ink-900);
    padding:96px 26px 32px;
    transform:translateX(-102%);
    transition:transform .34s ease;
    z-index:90;
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-link{
    width:100%;
    padding:18px 0;
    border-bottom:1px solid rgba(255,255,255,.12);
    font-size:17px;
    color:rgba(255,255,255,.86);
  }
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--accent-500)}
  .nav-toggle{display:inline-flex;position:relative;z-index:95}
  .cat-banner{padding:118px 0 40px;min-height:0}
  .cat-banner .banner-desc{font-size:14.5px}
  .section-head{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:34px}
  .guide-row{
    grid-template-columns:44px 78px minmax(0,1fr);
    gap:16px;
    padding:22px 0;
  }
  .guide-row .row-num{font-size:30px}
  .row-thumb{width:78px}
  .row-body h3{font-size:17px}
  .row-side{grid-column:1 / -1;font-size:12.5px}
  .steps{grid-template-columns:1fr}
  .metric{padding:26px 22px}
  .metric .num{font-size:36px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:28px}
  .cta-band{padding:64px 0}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .faq-q{font-size:16px}
  .faq-a p{padding-left:32px}
}
@media screen and (max-width:520px){
  .guide-row{grid-template-columns:38px 66px minmax(0,1fr);gap:12px}
  .row-thumb{width:66px;border-radius:6px}
  .guide-row .row-num{font-size:26px}
  .brand{font-size:15.5px}
  .brand-sub{display:inline}
  .btn{width:100%}
  .cta-inner .btn{width:auto}
}