/* roulang page: index */
:root{
  --ink-900:#171512;
  --ink-700:#2A2622;
  --ink-500:#4A443C;
  --paper:#F6F1E7;
  --paper-2:#EDE6D6;
  --soy:#D9A62E;
  --soy-deep:#B4861B;
  --soy-soft:#F2DFA8;
  --geng:#A6402C;
  --line:rgba(23,21,18,.14);
  --line-soft:rgba(23,21,18,.08);
  --shadow-1:0 2px 0 rgba(23,21,18,.04);
  --shadow-2:0 14px 30px rgba(23,21,18,.10);
  --r-s:3px;
  --r-m:4px;
  --r-l:6px;
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:40px;
  --sp-5:64px;
  --sp-6:96px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink-700);font-family:var(--font-sans);font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease}
button{font:inherit;color:inherit}
h1,h2,h3,h4,h5{margin:0;font-family:var(--font-serif);font-weight:700;letter-spacing:-.02em;color:var(--ink-900);line-height:1.25}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--ink-900);outline-offset:3px}
.container{width:100%;max-width:1180px;margin:0 auto;padding-left:clamp(20px,4vw,48px);padding-right:clamp(20px,4vw,48px)}
.grid-x{display:flex;flex-wrap:wrap}
.grid-x.gutter{margin-left:-14px;margin-right:-14px}
.grid-x.gutter>.cell{padding-left:14px;padding-right:14px}

/* ===== 侧栏导航 ===== */
.side-nav{position:fixed;top:0;left:0;width:248px;height:100vh;height:100dvh;background:var(--paper);border-right:1px solid var(--line);display:flex;flex-direction:column;padding:32px 24px 20px;overflow-y:auto;z-index:80}
.brand{display:flex;gap:10px;align-items:flex-start}
.brand-mark{width:11px;height:11px;background:var(--soy);margin-top:9px;flex:none;transition:transform .25s ease}
.brand:hover .brand-mark{transform:rotate(45deg)}
.brand-name{display:block;font-family:var(--font-serif);font-size:19px;line-height:1.42;font-weight:700;color:var(--ink-900);letter-spacing:-.01em}
.brand-sub{display:block;margin-top:7px;font-size:11px;letter-spacing:.18em;color:var(--ink-500)}
.side-nav-links{margin-top:36px;display:flex;flex-direction:column}
.side-nav-links a{position:relative;display:block;padding:10px 0 10px 16px;font-size:14.5px;line-height:1.5;color:var(--ink-500);transition:color .2s ease}
.side-nav-links a::before{content:"";position:absolute;left:0;top:50%;width:2px;height:16px;margin-top:-8px;background:var(--soy);transform:scaleY(0);transition:transform .22s cubic-bezier(.2,.7,.2,1)}
.side-nav-links a:hover{color:var(--ink-900)}
.side-nav-links a.is-active{color:var(--ink-900);font-weight:600}
.side-nav-links a.is-active::before{transform:scaleY(1)}
.side-nav-foot{margin-top:auto;padding-top:28px;border-top:1px solid var(--line-soft)}
.side-contact-label{font-size:11px;letter-spacing:.16em;color:var(--ink-500);margin-bottom:8px}
.side-contact{display:inline-block;font-family:var(--font-mono);font-size:12.5px;color:var(--ink-900);word-break:break-all;border-bottom:1px solid transparent}
.side-contact:hover{border-bottom-color:var(--soy)}
.side-contact-note{margin-top:10px;font-size:12px;line-height:1.7;color:var(--ink-500)}
.side-copy{margin-top:20px;font-size:11px;letter-spacing:.06em;color:rgba(74,68,60,.72)}

/* ===== 主体 ===== */
.site-main{margin-left:248px;min-height:100vh;display:flex;flex-direction:column}
.mobile-bar{display:none}
.mobile-drawer,.drawer-mask{display:none}

/* ===== 按钮 / 链接 / 徽章 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 24px;border-radius:var(--r-m);font-size:15px;font-weight:600;letter-spacing:.02em;border:1px solid transparent;cursor:pointer;transition:background-color .2s ease,color .2s ease,transform .2s ease,border-color .2s ease}
.btn-primary{background:var(--soy);color:var(--ink-900);border-color:var(--soy)}
.btn-primary:hover{background:var(--soy-deep);border-color:var(--soy-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--ink-900)}
.btn-ghost:hover{background:var(--ink-900);color:var(--paper)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--ink-900);border-bottom:1px solid var(--line);padding-bottom:2px;white-space:nowrap}
.link-arrow em{font-style:normal;transition:transform .2s ease}
.link-arrow:hover{border-bottom-color:var(--soy)}
.link-arrow:hover em{transform:translateX(3px)}
.badge{display:inline-block;font-size:11px;letter-spacing:.08em;line-height:1.5;padding:3px 8px;border:1px solid var(--line);border-radius:var(--r-s);color:var(--ink-500);background:transparent}
.badge-soy{border-color:var(--soy);color:var(--soy-deep)}

/* ===== Hero ===== */
.hero{padding-top:clamp(44px,5.5vw,84px);padding-bottom:clamp(48px,6vw,88px);position:relative}
.hero-copy{padding-left:0}
@media (min-width:1024px){.hero-copy{padding-left:64px}}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.16em;color:var(--ink-500);padding-bottom:6px;border-bottom:2px solid var(--soy);margin-bottom:22px}
.hero h1{font-size:clamp(31px,4.4vw,54px);line-height:1.16;letter-spacing:-.025em}
.hero-sub{margin-top:22px;max-width:30em;font-size:clamp(16px,1.5vw,18px);line-height:1.8;color:var(--ink-500)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-meta{display:flex;flex-wrap:wrap;margin-top:30px;font-size:12.5px;letter-spacing:.06em;color:var(--ink-500)}
.hero-meta span{padding:0 14px;border-left:1px solid var(--line)}
.hero-meta span:first-child{padding-left:0;border-left:0}
.hero-figure{position:relative;padding:0 0 22px 22px;margin-top:36px}
@media (min-width:1024px){.hero-figure{margin-top:0}}
.hero-figure::before{content:"";position:absolute;right:-12px;bottom:0;width:52%;height:58%;border:1px solid var(--soy);pointer-events:none}
.hero-frame{position:relative;z-index:1;aspect-ratio:16/11;border:1px solid var(--line);background-color:var(--paper-2);background-image:repeating-linear-gradient(45deg,rgba(217,166,46,.16) 0 1px,transparent 1px 10px);overflow:hidden}
.hero-frame img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.hero-frame:hover img{transform:scale(1.03)}

/* ===== 板块通用 ===== */
.section{padding-top:clamp(56px,7vw,96px);padding-bottom:clamp(56px,7vw,96px);border-top:1px solid var(--line)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:clamp(28px,4vw,44px)}
.section-kicker{display:flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.18em;color:var(--ink-500);margin-bottom:14px}
.section-kicker::before{content:"";width:18px;height:2px;background:var(--soy)}
.section-head h2,.section-side h2{font-size:clamp(24px,2.8vw,34px)}
.section-lead{margin-top:16px;font-size:15px;line-height:1.85;color:var(--ink-500);max-width:34em}

/* ===== 内容清单 ===== */
.index-list{border-top:1px solid var(--line);margin-top:32px}
@media (min-width:1024px){.index-list{margin-top:0}}
.index-list li{border-bottom:1px solid var(--line)}
.index-list a{display:flex;align-items:flex-start;gap:20px;padding:22px 0;transition:transform .22s ease}
.index-list a:hover{transform:translateX(4px)}
.idx{flex:none;width:28px;padding-top:4px;font-family:var(--font-mono);font-size:13px;font-variant-numeric:tabular-nums;color:var(--ink-500);transition:color .2s ease}
.index-list a:hover .idx{color:var(--soy)}
.idx-body{flex:1;min-width:0}
.idx-title{display:block;font-family:var(--font-serif);font-size:18px;font-weight:700;color:var(--ink-900);margin-bottom:6px;line-height:1.45}
.idx-desc{display:block;font-size:14.5px;line-height:1.8;color:var(--ink-500)}
.idx-arrow{flex:none;align-self:center;font-size:16px;color:var(--ink-500);transition:transform .2s ease,color .2s ease}
.index-list a:hover .idx-arrow{color:var(--soy);transform:translateX(3px)}

/* ===== 数据带 ===== */
.section-stats{background:var(--ink-900);border-top:0}
.section-stats .section-kicker{color:rgba(246,241,231,.62)}
.section-stats .section-kicker::before{background:var(--soy)}
.section-stats h2{color:var(--paper)}
.section-stats .section-lead{color:rgba(246,241,231,.62)}
.stats-row{margin-top:clamp(28px,4vw,44px)}
.stat{padding-top:18px;border-top:1px solid rgba(246,241,231,.18);margin-bottom:24px}
.stat-num{font-family:var(--font-mono);font-size:clamp(32px,3.6vw,42px);line-height:1;color:var(--soy);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stat-unit{font-family:var(--font-sans);font-size:13px;color:rgba(246,241,231,.66);margin-left:5px;letter-spacing:.02em}
.stat-label{margin-top:12px;font-size:14.5px;color:var(--paper);font-family:var(--font-serif);font-weight:700}
.stat-desc{margin-top:6px;font-size:13px;line-height:1.7;color:rgba(246,241,231,.6)}

/* ===== 精选 ===== */
.featured-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;align-items:start}
.feat-lead{position:relative;display:block;border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;background:var(--paper);transition:box-shadow .25s ease,border-color .25s ease,transform .25s ease}
.feat-lead:hover{box-shadow:var(--shadow-2);border-color:var(--ink-900);transform:translateY(-2px)}
.feat-lead img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease}
.feat-lead:hover img{transform:scale(1.03)}
.feat-lead-bar{position:absolute;left:16px;right:16px;bottom:16px;display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 16px;background:rgba(246,241,231,.93);color:var(--ink-900);font-size:14px;font-weight:600;border-radius:var(--r-s);font-family:var(--font-serif)}
.feat-side{display:flex;flex-direction:column;gap:24px}
.feat-small{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;background:var(--paper);transition:box-shadow .25s ease,border-color .25s ease,transform .25s ease}
.feat-small:hover{box-shadow:var(--shadow-2);border-color:var(--ink-900);transform:translateY(-2px)}
.feat-small img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s ease}
.feat-small:hover img{transform:scale(1.03)}
.feat-small-body{padding:14px 18px 18px}
.feat-small-body h3{font-size:16.5px;line-height:1.5;margin:10px 0 6px}
.feat-small-body p{font-size:13.5px;color:var(--ink-500);line-height:1.75;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}

/* ===== 流程 ===== */
.timeline{position:relative;padding-left:30px;margin-top:8px}
.timeline::before{content:"";position:absolute;left:5px;top:10px;bottom:12px;width:2px;background:var(--line)}
.timeline li{position:relative;padding-bottom:32px}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{content:"";position:absolute;left:-30px;top:8px;width:12px;height:12px;border-radius:50%;border:2px solid var(--soy);background:var(--paper)}
.timeline h3{font-size:18px;line-height:1.5;margin-bottom:8px}
.timeline p{font-size:15px;line-height:1.85;color:var(--ink-500);max-width:32em}
.timeline .step-no{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--soy-deep);display:block;margin-bottom:4px}

/* ===== 最新信息 ===== */
.news-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:24px;align-items:start}
.news-lead{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;background:var(--paper);transition:box-shadow .25s ease,border-color .25s ease,transform .25s ease}
.news-lead:hover{box-shadow:var(--shadow-2);border-color:var(--ink-900);transform:translateY(-2px)}
.news-lead-media{overflow:hidden}
.news-lead-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease}
.news-lead:hover .news-lead-media img{transform:scale(1.03)}
.news-lead-body{padding:20px 22px 22px}
.news-lead-body h3{font-size:19px;line-height:1.45;margin:12px 0 10px}
.news-lead-body p{font-size:14.5px;line-height:1.8;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:14px;font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--ink-500)}
.news-side{display:flex;flex-direction:column;gap:24px}
.news-item{display:flex;gap:16px;padding:14px;border:1px solid var(--line);border-radius:var(--r-l);background:var(--paper);transition:box-shadow .25s ease,border-color .25s ease,transform .25s ease}
.news-item:hover{box-shadow:var(--shadow-2);border-color:var(--ink-900);transform:translateY(-2px)}
.news-thumb{flex:none;width:96px;height:72px;overflow:hidden;border-radius:var(--r-s);background:var(--paper-2)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-item-body{min-width:0;flex:1}
.news-item-body h4{font-size:16px;line-height:1.5;margin:8px 0 6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-more{margin-top:20px;border-top:1px solid var(--line-soft)}
.news-more li{border-bottom:1px solid var(--line-soft)}
.news-more a{display:flex;justify-content:space-between;gap:16px;padding:12px 2px;font-size:14.5px;color:var(--ink-700)}
.news-more a:hover{color:var(--ink-900)}
.news-more a:hover .news-more-title{border-bottom-color:var(--soy)}
.news-more-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;border-bottom:1px solid transparent;transition:border-color .2s ease}
.news-more time{flex:none;font-family:var(--font-mono);font-size:12px;color:var(--ink-500)}
.cms-empty{padding:34px 26px;border:1px dashed var(--line);border-radius:var(--r-l);background:var(--paper-2);font-size:15px;color:var(--ink-500)}
.cms-empty a{color:var(--ink-900);border-bottom:1px solid var(--soy);padding-bottom:1px;margin-left:6px}

/* ===== FAQ ===== */
.faq-list{margin-top:8px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:20px 0;background:none;border:0;cursor:pointer;text-align:left;font-family:var(--font-serif);font-size:17px;font-weight:700;line-height:1.5;color:var(--ink-900);transition:color .2s ease}
.faq-q:hover{color:var(--ink-700)}
.faq-icon{flex:none;width:20px;height:20px;position:relative;transition:transform .22s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;top:50%;left:50%;background:var(--ink-700);transition:background-color .22s ease,transform .22s ease}
.faq-icon::before{width:14px;height:1.6px;transform:translate(-50%,-50%)}
.faq-icon::after{width:1.6px;height:14px;transform:translate(-50%,-50%)}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:var(--soy-deep)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s cubic-bezier(.2,.7,.2,1)}
.faq-a p{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--ink-500);max-width:44em}

/* ===== 联系 ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(28px,5vw,64px);align-items:start}
.contact-list{margin-top:26px}
.contact-row{display:flex;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid var(--line-soft);font-size:14.5px}
.contact-row span:first-child{flex:none;color:var(--ink-500)}
.contact-row span:last-child{text-align:right;color:var(--ink-900)}
.form-field{margin-bottom:22px}
.form-field label{display:block;font-size:13px;letter-spacing:.04em;color:var(--ink-500);margin-bottom:8px}
.form-field input,.form-field textarea{width:100%;border:0;border-bottom:1px solid var(--line);border-radius:0;background:transparent;padding:11px 2px;font-size:15px;line-height:1.6;color:var(--ink-900);font-family:inherit;transition:border-color .2s ease,box-shadow .2s ease}
.form-field input::placeholder,.form-field textarea::placeholder{color:rgba(74,68,60,.5)}
.form-field input:focus,.form-field textarea:focus{outline:none;border-bottom-color:var(--ink-900);box-shadow:0 2px 0 0 var(--soy)}
.form-field textarea{min-height:120px;resize:vertical}
.form-note{margin-top:16px;font-size:12.5px;line-height:1.7;color:var(--ink-500)}
.form-success{margin-top:18px;padding:14px 18px;background:var(--paper-2);border-left:3px solid var(--soy);font-size:14px;color:var(--ink-700);display:none}
.form-success.is-visible{display:block}

/* ===== 页脚 ===== */
.site-footer{background:var(--ink-900);color:rgba(246,241,231,.72);padding-top:clamp(48px,6vw,72px);margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr 1.1fr;gap:clamp(24px,3vw,48px)}
.footer-brand{display:block;font-family:var(--font-serif);font-size:19px;line-height:1.5;color:var(--paper);margin-bottom:14px}
.footer-brand:hover{color:var(--soy)}
.footer-col h5{font-family:var(--font-sans);font-size:13px;font-weight:600;letter-spacing:.1em;color:var(--paper);margin-bottom:16px}
.footer-col p{font-size:13.5px;line-height:1.85;color:rgba(246,241,231,.62)}
.footer-col a{display:block;padding:5px 0;font-size:14px;color:rgba(246,241,231,.72)}
.footer-col a:hover{color:var(--soy);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{margin-top:clamp(32px,4vw,52px);border-top:1px solid rgba(246,241,231,.14);padding:18px 0 22px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px;letter-spacing:.06em;color:rgba(246,241,231,.5)}

/* ===== 返回顶部 ===== */
.to-top{position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:var(--r-m);border:1px solid var(--line);background:var(--paper);color:var(--ink-900);display:flex;align-items:center;justify-content:center;font-size:16px;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .25s ease,transform .25s ease,background-color .2s ease,border-color .2s ease;z-index:60}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--paper-2);border-color:var(--ink-900)}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  .side-nav{display:none}
  .site-main{margin-left:0}
  .mobile-bar{display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:70;height:56px;padding:0 20px;background:var(--paper);border-bottom:1px solid var(--line)}
  .mobile-brand{font-family:var(--font-serif);font-size:15px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;max-width:62vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .mobile-toggle{flex:none;height:34px;padding:0 14px;border:1px solid var(--ink-900);border-radius:var(--r-m);background:transparent;font-size:13px;letter-spacing:.06em;color:var(--ink-900);cursor:pointer}
  .mobile-toggle:hover{background:var(--ink-900);color:var(--paper)}
  .mobile-drawer{display:flex;position:fixed;top:0;right:0;width:84vw;max-width:360px;height:100%;background:var(--paper);border-left:1px solid var(--line);z-index:95;transform:translateX(101%);transition:transform .28s cubic-bezier(.2,.7,.2,1);padding:22px 24px 28px;flex-direction:column;overflow-y:auto}
  .mobile-drawer.is-open{transform:translateX(0)}
  .drawer-mask{display:block;position:fixed;inset:0;background:rgba(23,21,18,.42);z-index:90;opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease}
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .drawer-close{align-self:flex-end;width:34px;height:34px;border:1px solid var(--line);border-radius:var(--r-m);background:transparent;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:16px;line-height:1}
  .drawer-close:hover{border-color:var(--ink-900)}
  .drawer-links{margin-top:24px;display:flex;flex-direction:column}
  .drawer-links a{padding:13px 0;border-bottom:1px solid var(--line-soft);font-size:15px;color:var(--ink-700)}
  .drawer-links a.is-active{color:var(--ink-900);font-weight:600;border-bottom-color:var(--soy)}
  .drawer-foot{margin-top:auto;padding-top:24px;border-top:1px solid var(--line-soft);font-size:12.5px;color:var(--ink-500);line-height:1.8}
  .featured-grid,.news-grid,.contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-figure{padding:0 0 18px 18px}
}
@media (max-width:767px){
  .hero-meta span{font-size:12px;padding:0 10px}
  .hero-actions{gap:10px}
  .stat-num{font-size:32px}
  .news-thumb{width:84px;height:64px}
}
@media (max-width:639px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-meta{gap:6px 0}
  .hero-meta span{padding:0 10px;border-left:0;padding-left:0;padding-right:16px}
  .hero-figure{padding:0 0 16px 16px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .contact-row{flex-direction:column;gap:4px}
  .contact-row span:last-child{text-align:left}
  .to-top{right:16px;bottom:16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --ink-900:#171512;
  --ink-700:#2A2622;
  --ink-500:#4A443C;
  --paper:#F6F1E7;
  --paper-2:#EDE6D6;
  --soy:#D9A62E;
  --soy-deep:#B4861B;
  --soy-soft:#F2DFA8;
  --geng:#A6402C;
  --line:rgba(23,21,18,.14);
  --line-soft:rgba(23,21,18,.08);
  --shadow-1:0 2px 0 rgba(23,21,18,.04);
  --shadow-2:0 14px 30px rgba(23,21,18,.10);
  --r-s:3px; --r-m:4px; --r-l:6px;
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:40px; --sp-5:64px; --sp-6:96px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --nav-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;padding:0;background:var(--paper);color:var(--ink-700);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--soy-deep);}
img{max-width:100%;height:auto;display:block;}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit;}
h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding-left:0;list-style:none;}
hr{border:0;border-top:1px solid var(--line);margin:0;}
::selection{background:var(--soy-soft);color:var(--ink-900);}

/* ---------- 阅读进度 ---------- */
.read-progress{position:fixed;top:0;left:var(--nav-w);right:0;height:2px;background:transparent;z-index:900;pointer-events:none;}
.read-progress span{display:block;height:100%;width:0;background:var(--soy);transition:width .08s linear;}

/* ---------- 左侧竖导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;
  background:var(--paper);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:30px 22px 22px;z-index:800;
}
.brand{display:flex;align-items:flex-start;gap:10px;margin-bottom:var(--sp-4);}
.brand-mark{
  width:12px;height:12px;background:var(--soy);border-radius:2px;flex:0 0 auto;margin-top:8px;
  box-shadow:0 0 0 3px rgba(217,166,46,.16);
}
.brand-text{
  font-family:var(--font-serif);font-weight:700;font-size:19px;line-height:1.35;
  letter-spacing:-0.01em;color:var(--ink-900);
}
.brand-text em{font-style:normal;display:block;font-size:16px;color:var(--soy-deep);letter-spacing:.02em;}
.side-nav-links{display:flex;flex-direction:column;gap:2px;}
.side-nav-links a{
  position:relative;display:block;padding:10px 0 10px 14px;font-size:14.5px;color:var(--ink-500);
  border-radius:var(--r-s);transition:color .18s ease,padding-left .18s ease;
}
.side-nav-links a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);
  width:2px;height:18px;background:var(--soy);transform-origin:center;
  transition:transform .2s cubic-bezier(.2,.7,.2,1);
}
.side-nav-links a:hover{color:var(--ink-900);padding-left:18px;}
.side-nav-links a:hover::before,.side-nav-links a.is-active::before{transform:translateY(-50%) scaleY(1);}
.side-nav-links a.is-active{color:var(--ink-900);font-weight:600;}
.side-nav-links a.is-active::before{background:var(--soy);}
.nav-foot{margin-top:auto;padding-top:var(--sp-3);border-top:1px solid var(--line-soft);}
.nav-foot-label{
  font-size:11px;letter-spacing:.12em;color:var(--ink-500);margin-bottom:8px;font-family:var(--font-mono);
}
.nav-foot a{font-size:13.5px;color:var(--ink-700);word-break:break-all;}
.nav-foot a:hover{color:var(--soy-deep);text-decoration:underline;text-underline-offset:3px;}
.nav-foot p{font-size:12.5px;color:var(--ink-500);line-height:1.7;margin-top:8px;}
.nav-copy{margin-top:16px !important;font-size:11.5px !important;color:rgba(74,68,60,.75) !important;}

/* ---------- 内容区 ---------- */
.page-wrap{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 5vw;}
.top-strip{border-bottom:1px solid var(--line-soft);}
.crumbs{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  padding:18px 0;font-size:12px;color:var(--ink-500);letter-spacing:.02em;
}
.crumbs a:hover{text-decoration:underline;text-underline-offset:3px;color:var(--ink-900);}
.crumbs .sep{color:rgba(74,68,60,.45);}
.crumbs .crumb-current{color:var(--ink-500);}

/* ---------- 文章头部 ---------- */
.article-head{padding:var(--sp-5) 0 var(--sp-4);}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
.badge{
  display:inline-block;font-size:11px;letter-spacing:.08em;padding:3px 9px;
  border:1px solid var(--line);border-radius:var(--r-s);color:var(--ink-500);background:transparent;
  line-height:1.6;
}
.badge-soy{border-color:var(--soy);color:var(--soy-deep);}
.meta-txt{font-family:var(--font-mono);font-size:12px;color:var(--ink-500);letter-spacing:.02em;}
.meta-bar{color:rgba(74,68,60,.4);font-size:12px;}
.article-head h1{
  font-family:var(--font-serif);font-weight:700;color:var(--ink-900);
  font-size:clamp(30px,4.2vw,44px);line-height:1.24;letter-spacing:-0.02em;
  max-width:22em;margin-bottom:18px;
}
.article-lead{
  max-width:38em;font-size:16.5px;line-height:1.85;color:var(--ink-500);
}
.article-head hr{margin-top:var(--sp-4);}

/* ---------- 正文 ---------- */
.article-body{padding:var(--sp-5) 0 var(--sp-5);}
.entry-content{max-width:720px;font-size:17px;line-height:1.92;color:var(--ink-700);}
.entry-content p{margin:0 0 1.15em;}
.entry-content h1,.entry-content h2{
  font-family:var(--font-serif);font-weight:700;color:var(--ink-900);
  font-size:clamp(23px,2.4vw,28px);line-height:1.36;letter-spacing:-0.01em;
  margin:46px 0 16px;padding-left:15px;position:relative;
}
.entry-content h1::before,.entry-content h2::before{
  content:"";position:absolute;left:0;top:.42em;width:3px;height:19px;background:var(--soy);border-radius:1px;
}
.entry-content h3{
  font-family:var(--font-serif);font-weight:700;color:var(--ink-900);
  font-size:20px;line-height:1.5;margin:32px 0 12px;
}
.entry-content h4{font-size:18px;font-weight:600;color:var(--ink-900);margin:24px 0 10px;}
.entry-content ul,.entry-content ol{margin:0 0 1.3em 1.2em;padding-left:.9em;}
.entry-content ul{list-style:disc;}
.entry-content ol{list-style:decimal;}
.entry-content li{margin-bottom:.5em;line-height:1.85;}
.entry-content li::marker{color:var(--soy-deep);}
.entry-content blockquote{
  margin:26px 0;padding:18px 22px;background:var(--paper-2);
  border-left:3px solid var(--soy);color:var(--ink-500);font-style:normal;
  border-radius:0 var(--r-m) var(--r-m) 0;
}
.entry-content blockquote p:last-child{margin-bottom:0;}
.entry-content img{
  width:106%;max-width:106%;margin:26px 0 8px -3%;height:auto;
  border:1px solid var(--line);border-radius:var(--r-m);
}
.entry-content figure{margin:26px 0;}
.entry-content figure img{margin:0;width:100%;max-width:100%;}
.entry-content figcaption{font-size:13px;color:var(--ink-500);margin-top:8px;text-align:center;}
.entry-content a{color:var(--soy-deep);text-decoration:underline;text-underline-offset:3px;}
.entry-content a:hover{color:var(--geng);}
.entry-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;line-height:1.7;}
.entry-content th{background:var(--paper-2);color:var(--ink-900);font-weight:600;text-align:left;}
.entry-content th,.entry-content td{padding:10px 12px;border-bottom:1px solid var(--line-soft);}
.entry-content pre{
  background:var(--ink-900);color:#F6F1E7;padding:16px 18px;border-radius:var(--r-m);
  overflow-x:auto;font-family:var(--font-mono);font-size:13.5px;line-height:1.7;margin:22px 0;
}
.entry-content code{font-family:var(--font-mono);font-size:.92em;background:var(--paper-2);padding:1px 5px;border-radius:2px;}
.entry-content pre code{background:none;padding:0;color:inherit;}
.entry-content strong{color:var(--ink-900);font-weight:600;}

.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-m);padding:48px 32px;text-align:center;
  background:rgba(237,230,214,.5);
}
.empty-state h2{font-family:var(--font-serif);font-size:24px;color:var(--ink-900);margin-bottom:12px;}
.empty-state p{color:var(--ink-500);font-size:15px;margin-bottom:24px;}
.empty-state .btn{display:inline-flex;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-m);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all .2s cubic-bezier(.2,.7,.2,1);cursor:pointer;
  letter-spacing:.01em;
}
.btn-primary{background:var(--soy);color:var(--ink-900);border-color:var(--soy);}
.btn-primary:hover{background:var(--soy-deep);border-color:var(--soy-deep);color:var(--ink-900);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--ink-900);color:var(--ink-900);}
.btn-ghost:hover{background:var(--ink-900);color:var(--paper);}
.btn-on-dark{background:var(--soy);color:var(--ink-900);border-color:var(--soy);}
.btn-on-dark:hover{background:#E8B63C;border-color:#E8B63C;transform:translateY(-1px);}
.btn:focus-visible{outline:2px solid var(--ink-900);outline-offset:2px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink-900);}
.link-arrow i{transition:transform .2s ease;font-size:12px;}
.link-arrow:hover{color:var(--soy-deep);}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- 文末标签 & 上下篇 ---------- */
.article-foot{padding:var(--sp-3) 0 var(--sp-5);border-top:1px solid var(--line-soft);}
.foot-row{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;padding-top:var(--sp-3);}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  font-size:11px;letter-spacing:.08em;padding:4px 12px;border:1px solid var(--line);
  border-radius:var(--r-s);color:var(--ink-500);transition:all .18s ease;
}
.tag:hover{border-color:var(--soy);color:var(--soy-deep);}
.pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:var(--sp-4);}
.pager a{
  display:block;border:1px solid var(--line);border-radius:var(--r-m);padding:20px 22px;
  background:var(--paper);transition:all .22s cubic-bezier(.2,.7,.2,1);
}
.pager a:hover{border-color:var(--ink-900);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.pager .dir{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--ink-500);display:block;margin-bottom:8px;}
.pager .ttl{font-family:var(--font-serif);font-size:17px;color:var(--ink-900);line-height:1.5;}

/* ---------- 相关推荐 ---------- */
.related{padding:var(--sp-5) 0;border-top:1px solid var(--line-soft);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:var(--sp-4);}
.sec-head h2{
  font-family:var(--font-serif);font-size:clamp(24px,2.6vw,30px);color:var(--ink-900);
  letter-spacing:-0.01em;line-height:1.3;
}
.sec-head .sub{font-size:13px;color:var(--ink-500);margin-top:6px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-m);overflow:hidden;transition:all .22s cubic-bezier(.2,.7,.2,1);
}
.card:hover{border-color:var(--ink-900);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.card .thumb{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;background:var(--paper-2);border-bottom:1px solid var(--line);}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s cubic-bezier(.2,.7,.2,1);}
.card:hover .thumb img{transform:scale(1.03);}
.card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card h3{font-family:var(--font-serif);font-size:17.5px;line-height:1.5;color:var(--ink-900);}
.card .desc{font-size:14px;line-height:1.75;color:var(--ink-500);}
.card .meta{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:6px;}
.card .meta .time{font-family:var(--font-mono);font-size:12px;color:var(--ink-500);}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--ink-900);color:var(--paper);padding:var(--sp-5) 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{
  font-family:var(--font-serif);font-size:clamp(24px,2.8vw,32px);line-height:1.3;color:#F6F1E7;
  max-width:20em;letter-spacing:-0.01em;
}
.cta-inner p{font-size:14.5px;color:rgba(246,241,231,.68);margin-top:12px;max-width:32em;line-height:1.8;}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.cta-actions .link-arrow{color:#F2DFA8;}
.cta-actions .link-arrow:hover{color:var(--soy);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:#EDE6D6;margin-top:auto;padding:var(--sp-5) 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1.2fr;gap:40px;}
.footer-brand{
  font-family:var(--font-serif);font-size:19px;line-height:1.4;color:#F6F1E7;
  display:block;margin-bottom:14px;letter-spacing:-0.01em;
}
.footer-brand:hover{color:var(--soy-soft);}
.footer-col h5{
  font-size:13px;font-weight:600;letter-spacing:.1em;color:var(--soy-soft);margin-bottom:16px;
}
.footer-col p{font-size:13.5px;line-height:1.85;color:rgba(237,230,214,.66);}
.footer-col a{display:block;font-size:14px;color:rgba(237,230,214,.78);padding:5px 0;transition:color .18s ease;}
.footer-col a:hover{color:var(--soy);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
  margin-top:44px;padding-top:18px;border-top:1px solid rgba(246,241,231,.14);
  font-size:12px;color:rgba(237,230,214,.5);letter-spacing:.02em;
}

/* ---------- 移动端导航 ---------- */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:820;
  background:var(--paper);border-bottom:1px solid var(--line);align-items:center;justify-content:space-between;
  padding:0 20px;
}
.mobile-brand{
  font-family:var(--font-serif);font-weight:700;font-size:16.5px;color:var(--ink-900);letter-spacing:-0.01em;
}
.mobile-brand span{color:var(--soy-deep);}
.menu-btn{width:40px;height:40px;display:flex;flex-direction:column;justify-content:center;gap:5px;align-items:flex-end;}
.menu-btn span{display:block;height:2px;background:var(--ink-900);border-radius:1px;transition:all .2s ease;}
.menu-btn span:nth-child(1){width:20px;}
.menu-btn span:nth-child(2){width:14px;}
.menu-btn span:nth-child(3){width:20px;}
.menu-btn:hover span{width:20px;background:var(--soy-deep);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(23,21,18,.42);z-index:830;
  opacity:0;pointer-events:none;transition:opacity .22s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;width:84vw;max-width:360px;height:100%;
  background:var(--paper);z-index:840;display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .26s cubic-bezier(.2,.7,.2,1);
  border-left:1px solid var(--line);padding:22px 22px 26px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-head span{font-family:var(--font-serif);font-weight:700;font-size:17px;color:var(--ink-900);}
.drawer-close{width:34px;height:34px;border:1px solid var(--line);border-radius:var(--r-s);font-size:18px;line-height:1;color:var(--ink-700);}
.drawer-close:hover{border-color:var(--ink-900);color:var(--ink-900);}
.drawer nav{display:flex;flex-direction:column;}
.drawer nav a{padding:13px 0;border-bottom:1px solid var(--line-soft);font-size:15px;color:var(--ink-700);}
.drawer nav a:hover{color:var(--soy-deep);padding-left:4px;}
.drawer nav a.is-active{color:var(--ink-900);font-weight:600;}
.drawer-foot{margin-top:24px;padding-top:18px;border-top:1px solid var(--line-soft);}
.drawer-foot a{font-size:13.5px;color:var(--ink-700);}
.drawer-foot p{font-size:12.5px;color:var(--ink-500);margin-top:8px;line-height:1.7;}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border:1px solid var(--line);
  border-radius:var(--r-m);background:var(--paper);color:var(--ink-900);display:flex;
  align-items:center;justify-content:center;font-size:14px;z-index:700;
  opacity:0;pointer-events:none;transition:all .22s ease;
}
.to-top.is-show{opacity:1;pointer-events:auto;}
.to-top:hover{border-color:var(--ink-900);box-shadow:var(--shadow-2);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 4vw;}
}
@media (max-width:1023px){
  .side-nav{display:none;}
  .mobile-bar{display:flex;}
  .page-wrap{margin-left:0;padding-top:56px;}
  .read-progress{left:0;}
  .article-head{padding:var(--sp-4) 0 var(--sp-3);}
  .article-body{padding:var(--sp-4) 0 var(--sp-4);}
  .container{padding:0 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .card-grid{grid-template-columns:1fr 1fr;}
  .related .card-grid .card:last-child{display:none;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .article-head h1{font-size:clamp(26px,7vw,34px);}
  .article-lead{font-size:15.5px;}
  .entry-content{font-size:16.5px;line-height:1.9;}
  .entry-content img{width:100%;max-width:100%;margin-left:0;}
  .entry-content table{display:block;overflow-x:auto;white-space:nowrap;}
  .pager{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .related .card-grid .card:last-child{display:flex;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .foot-row{flex-direction:column;align-items:flex-start;}
  .to-top{right:16px;bottom:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --ink-900:#171512;
  --ink-700:#2A2622;
  --ink-500:#4A443C;
  --paper:#F6F1E7;
  --paper-2:#EDE6D6;
  --card:#FCF9F1;
  --soy:#D9A62E;
  --soy-deep:#B4861B;
  --soy-soft:#F2DFA8;
  --geng:#A6402C;
  --line:rgba(23,21,18,.14);
  --line-soft:rgba(23,21,18,.08);
  --shadow-1:0 2px 0 rgba(23,21,18,.04);
  --shadow-2:0 14px 30px rgba(23,21,18,.10);
  --r-s:3px;
  --r-m:4px;
  --r-l:6px;
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:40px;
  --sp-5:64px;
  --sp-6:96px;
  --serif:"Noto Serif SC","Songti SC",Songti,"Source Han Serif SC",serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,h5{
  font-family:var(--serif);
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--ink-900);
  margin:0;
  line-height:1.22;
}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0}
::selection{background:var(--soy-soft);color:var(--ink-900)}
:focus-visible{outline:2px solid var(--ink-900);outline-offset:2px}

.container{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding-left:5vw;
  padding-right:5vw;
}

/* ---------- 左侧竖导航 ---------- */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:248px;
  background:var(--paper);
  border-right:1px solid var(--line);
  padding:32px 22px 24px;
  display:flex;
  flex-direction:column;
  z-index:60;
  overflow-y:auto;
}
.brand{
  display:flex;
  align-items:flex-start;
  gap:10px;
  margin-bottom:34px;
}
.brand-mark{
  flex:none;
  width:12px;height:12px;
  background:var(--soy);
  margin-top:8px;
}
.brand-text{
  font-family:var(--serif);
  font-size:19px;
  line-height:1.42;
  font-weight:700;
  color:var(--ink-900);
  letter-spacing:-.01em;
}
.side-nav-links{display:flex;flex-direction:column}
.side-nav-links a{
  position:relative;
  display:block;
  padding:11px 0 11px 14px;
  font-size:14.5px;
  color:var(--ink-500);
  border-bottom:1px solid var(--line-soft);
  transition:color .2s ease,background .2s ease;
}
.side-nav-links a::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:2px;height:18px;
  background:var(--soy);
  transform:translateY(-50%) scaleY(0);
  transform-origin:center;
  transition:transform .22s cubic-bezier(.2,.7,.2,1);
}
.side-nav-links a:hover{color:var(--ink-900);background:rgba(217,166,46,.06)}
.side-nav-links a:hover::before,
.side-nav-links a.is-active::before{transform:translateY(-50%) scaleY(1)}
.side-nav-links a.is-active{color:var(--ink-900);font-weight:600}
.nav-foot{
  margin-top:auto;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  line-height:1.7;
  color:var(--ink-500);
}
.nav-label{
  font-size:11px;
  letter-spacing:.14em;
  color:var(--soy-deep);
  font-family:var(--mono);
  margin-bottom:6px;
}
.nav-foot a{display:inline-block;color:var(--ink-900);border-bottom:1px solid var(--line);transition:border-color .2s,color .2s}
.nav-foot a:hover{color:var(--soy-deep);border-color:var(--soy)}
.nav-copy{font-size:11px;letter-spacing:.02em;color:var(--ink-500);margin-top:14px}

/* ---------- 移动端 ---------- */
.mobile-bar{display:none}
.drawer,.drawer-mask{display:none}

/* ---------- 内容区 ---------- */
.content{margin-left:248px;min-height:100vh;display:flex;flex-direction:column}
main{flex:1 1 auto}

.topline{border-bottom:1px solid var(--line);background:var(--paper)}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:14px 0;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--ink-500);
}
.breadcrumb a{transition:color .2s}
.breadcrumb a:hover{color:var(--ink-900);text-decoration:underline;text-underline-offset:3px}
.breadcrumb .sep{color:var(--line);font-family:var(--mono)}
.breadcrumb .crumb-tag{
  margin-left:auto;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--soy-deep);
  border:1px solid var(--soy);
  padding:1px 8px;
  border-radius:2px;
}

/* ---------- Hero ---------- */
.hero{padding:80px 0 72px;border-bottom:1px solid var(--line)}
.hero-split{
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:72px;
  align-items:start;
}
.eyebrow{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--soy-deep);
  margin:0 0 20px;
}
.hero h1{
  font-size:clamp(34px,4.4vw,54px);
  line-height:1.14;
  margin-bottom:28px;
  max-width:15em;
}
.hero-meta{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:0;
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--ink-500);
  padding-top:22px;
  border-top:1px solid var(--line);
}
.hero-meta li{position:relative;padding:0 16px}
.hero-meta li:first-child{padding-left:0}
.hero-meta li::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:1px;height:11px;
  background:var(--line);
  transform:translateY(-50%);
}
.hero-meta li:first-child::before{display:none}
.hero-right{padding-top:6px}
.lead{
  font-size:16.5px;
  line-height:1.92;
  color:var(--ink-500);
  border-left:3px solid var(--soy);
  padding-left:22px;
  margin-bottom:26px;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--ink-900);
  border-bottom:1px solid var(--ink-900);
  padding-bottom:3px;
  transition:color .2s,border-color .2s;
}
.text-link .arrow{font-family:var(--mono);transition:transform .2s ease}
.text-link:hover{color:var(--soy-deep);border-color:var(--soy)}
.text-link:hover .arrow{transform:translateX(3px)}

/* ---------- 反色数据带 ---------- */
.band-dark{background:var(--ink-900);color:var(--paper);padding:72px 0}
.band-head{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:end;
  padding-bottom:40px;
  border-bottom:1px solid rgba(246,241,231,.16);
  margin-bottom:48px;
}
.band-dark h2{color:var(--paper);font-size:clamp(26px,3vw,34px)}
.band-head p{color:rgba(246,241,231,.72);font-size:14.5px;line-height:1.8;margin:0;max-width:32em}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:32px;
}
.stat-num{
  font-family:var(--mono);
  font-size:40px;
  line-height:1;
  color:var(--soy);
  font-variant-numeric:tabular-nums;
}
.stat-unit{
  font-family:var(--mono);
  font-size:13px;
  color:rgba(246,241,231,.6);
  margin-left:6px;
  letter-spacing:.06em;
}
.stat-label{
  margin:12px 0 0;
  font-size:14px;
  color:rgba(246,241,231,.74);
  line-height:1.7;
}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;border-bottom:1px solid var(--line)}
.section--last{border-bottom:0;padding-bottom:88px}
.sec-head{margin-bottom:48px;max-width:46em}
.sec-head h2{
  font-size:clamp(26px,3.2vw,38px);
  margin-bottom:16px;
}
.sec-head p{
  font-size:15.5px;
  color:var(--ink-500);
  line-height:1.85;
  max-width:34em;
}

/* ---------- 编号解析清单 ---------- */
.parse-list{list-style:none;border-top:1px solid var(--line)}
.parse-item{
  display:grid;
  grid-template-columns:76px 1fr 28px;
  gap:24px;
  padding:34px 0;
  border-bottom:1px solid var(--line);
  align-items:start;
  transition:transform .22s cubic-bezier(.2,.7,.2,1),background .22s ease;
}
.parse-item:hover{transform:translateX(4px)}
.parse-num{
  font-family:var(--mono);
  font-size:22px;
  line-height:1.3;
  color:var(--ink-500);
  font-variant-numeric:tabular-nums;
  transition:color .22s ease;
}
.parse-item:hover .parse-num{color:var(--soy-deep)}
.parse-body h3{
  font-size:clamp(19px,1.6vw,22px);
  line-height:1.4;
  display:inline-block;
  position:relative;
  margin-bottom:14px;
  padding-bottom:4px;
}
.parse-body h3::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;
  background:var(--soy);
  transition:width .28s cubic-bezier(.2,.7,.2,1);
}
.parse-item:hover .parse-body h3::after{width:100%}
.parse-body p{
  font-size:15.5px;
  line-height:1.88;
  color:var(--ink-500);
  max-width:34em;
  margin:0 0 10px;
}
.parse-body p:last-child{margin-bottom:0}
.parse-arrow{
  font-family:var(--mono);
  font-size:16px;
  color:var(--line);
  padding-top:6px;
  transition:color .22s ease,transform .22s ease;
}
.parse-item:hover .parse-arrow{color:var(--soy-deep);transform:translateX(3px)}

/* ---------- 卡片 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.info-card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  overflow:hidden;
  transition:box-shadow .24s ease,transform .24s ease,border-color .24s ease;
}
.info-card:hover{
  box-shadow:var(--shadow-2);
  transform:translateY(-2px);
  border-color:var(--ink-900);
}
.info-card .thumb{
  aspect-ratio:4/3;
  overflow:hidden;
  background:var(--paper-2);
  border-bottom:1px solid var(--line);
}
.info-card .thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .34s cubic-bezier(.2,.7,.2,1);
}
.info-card:hover .thumb img{transform:scale(1.03)}
.info-card .body{
  padding:22px 24px 26px;
  display:flex;
  flex-direction:column;
  gap:12px;
  flex:1 1 auto;
}
.info-card h3{
  font-size:20px;
  line-height:1.42;
}
.info-card .body p{
  font-size:14.5px;
  line-height:1.82;
  color:var(--ink-500);
  margin:0;
}
.badge{
  display:inline-block;
  align-self:flex-start;
  font-size:11px;
  letter-spacing:.08em;
  line-height:1.5;
  padding:2px 8px;
  border:1px solid var(--line);
  border-radius:2px;
  color:var(--ink-500);
}
.badge--soy{border-color:var(--soy);color:var(--soy-deep)}
.info-card .card-link{
  margin-top:auto;
  padding-top:6px;
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:13.5px;
  font-weight:600;
  color:var(--ink-900);
}
.info-card .card-link .arrow{font-family:var(--mono);transition:transform .2s}
.info-card:hover .card-link .arrow{transform:translateX(3px)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:840px}
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px;
  background:none;
  border:0;
  padding:20px 0;
  text-align:left;
  cursor:pointer;
  font-family:var(--serif);
  font-size:17px;
  font-weight:700;
  line-height:1.55;
  letter-spacing:-.01em;
  color:var(--ink-900);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--soy-deep)}
.faq-q .sign{
  flex:none;
  font-family:var(--mono);
  font-size:20px;
  line-height:1.2;
  color:var(--ink-500);
  transition:transform .22s ease,color .22s ease;
}
.faq-item.is-open .faq-q .sign{transform:rotate(45deg);color:var(--soy-deep)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a p{
  font-size:15px;
  line-height:1.88;
  color:var(--ink-500);
  max-width:36em;
  margin:0;
  padding:0 0 22px;
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-left:3px solid var(--soy);
  border-radius:var(--r-m);
  padding:36px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:10px}
.cta-band p{
  font-size:14.5px;
  color:var(--ink-500);
  margin:0;
  max-width:34em;
}
.cta-actions{
  display:flex;
  align-items:center;
  gap:22px;
  flex-wrap:wrap;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:44px;
  padding:0 24px;
  border-radius:var(--r-m);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .16s ease,border-color .2s ease;
}
.btn--primary{background:var(--soy);color:var(--ink-900)}
.btn--primary:hover{background:var(--soy-deep);transform:translateY(-1px)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:transparent;border-color:var(--ink-900);color:var(--ink-900)}
.btn--ghost:hover{background:var(--ink-900);color:var(--paper)}
.btn:focus-visible{outline:2px solid var(--ink-900);outline-offset:2px}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);
  color:rgba(246,241,231,.78);
  padding-top:64px;
  font-size:14px;
  line-height:1.8;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1.25fr 1.1fr;
  gap:40px;
}
.footer-brand{
  display:block;
  font-family:var(--serif);
  font-size:19px;
  line-height:1.45;
  font-weight:700;
  color:var(--paper);
  margin-bottom:14px;
}
.footer-col p{font-size:13.5px;line-height:1.8;color:rgba(246,241,231,.66);margin:0}
.footer-col h5{
  font-family:var(--sans);
  font-size:13px;
  font-weight:600;
  letter-spacing:.1em;
  color:var(--paper);
  margin:0 0 16px;
}
.footer-col a{
  display:block;
  font-size:13.5px;
  padding:4px 0;
  color:rgba(246,241,231,.74);
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--soy);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  margin-top:48px;
  padding:20px 0 28px;
  border-top:1px solid rgba(246,241,231,.16);
  font-size:12px;
  color:rgba(246,241,231,.56);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero-split{gap:48px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}

@media (max-width:1023px){
  .mobile-bar{
    display:flex;
    position:fixed;
    top:0;left:0;right:0;
    height:56px;
    align-items:center;
    justify-content:space-between;
    padding:0 20px;
    background:var(--paper);
    border-bottom:1px solid var(--line);
    z-index:70;
  }
  .brand-mini{
    display:flex;
    align-items:center;
    gap:8px;
    font-family:var(--serif);
    font-size:15.5px;
    font-weight:700;
    color:var(--ink-900);
  }
  .brand-mini .brand-mark{width:10px;height:10px;margin-top:0}
  .menu-btn{
    display:inline-flex;
    align-items:center;
    gap:6px;
    height:34px;
    padding:0 14px;
    background:transparent;
    border:1px solid var(--ink-900);
    border-radius:var(--r-m);
    font-size:13px;
    font-weight:600;
    color:var(--ink-900);
    cursor:pointer;
    transition:background .2s,color .2s;
  }
  .menu-btn:hover{background:var(--ink-900);color:var(--paper)}
  .side-nav{display:none}
  .content{margin-left:0;padding-top:56px}
  .drawer-mask{
    display:block;
    position:fixed;
    inset:0;
    background:rgba(23,21,18,.4);
    z-index:80;
    opacity:0;
    pointer-events:none;
    transition:opacity .26s ease;
  }
  .drawer-mask.is-open{opacity:1;pointer-events:auto}
  .drawer{
    display:block;
    position:fixed;
    top:0;right:0;
    height:100%;
    width:84vw;
    max-width:340px;
    background:var(--paper);
    border-left:1px solid var(--line);
    padding:76px 24px 32px;
    overflow-y:auto;
    z-index:90;
    transform:translateX(100%);
    transition:transform .28s cubic-bezier(.2,.7,.2,1);
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer .drawer-title{
    font-family:var(--mono);
    font-size:11px;
    letter-spacing:.16em;
    color:var(--soy-deep);
    margin-bottom:14px;
  }
  .drawer .drawer-close{
    position:absolute;
    top:18px;right:18px;
    width:34px;height:34px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    background:transparent;
    border:1px solid var(--line);
    border-radius:var(--r-m);
    font-size:16px;
    color:var(--ink-900);
    cursor:pointer;
    transition:background .2s,color .2s,border-color .2s;
  }
  .drawer .drawer-close:hover{background:var(--ink-900);color:var(--paper);border-color:var(--ink-900)}
  .drawer .nav-foot{border-top:1px solid var(--line);margin-top:28px}
  .hero{padding:56px 0 56px}
  .hero-split{grid-template-columns:1fr;gap:32px}
  .hero h1{max-width:none}
  .band-head{grid-template-columns:1fr;gap:22px;align-items:start}
  .section{padding:72px 0}
  .section--last{padding-bottom:64px}
  .sec-head{margin-bottom:36px}
  .container{padding-left:32px;padding-right:32px}
}

@media (max-width:767px){
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .card-grid{grid-template-columns:1fr}
  .cta-band{padding:28px 24px}
  .parse-item{grid-template-columns:56px 1fr;gap:16px}
  .parse-arrow{display:none}
  .parse-num{font-size:19px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}

@media (max-width:639px){
  .container{padding-left:20px;padding-right:20px}
  .hero{padding:44px 0}
  .hero h1{font-size:clamp(30px,8vw,40px)}
  .hero-meta{font-size:11.5px}
  .hero-meta li{padding:0 12px}
  .lead{font-size:15.5px;padding-left:16px}
  .section{padding:56px 0}
  .section--last{padding-bottom:52px}
  .band-dark{padding:52px 0}
  .stat-grid{grid-template-columns:1fr 1fr;gap:24px}
  .stat-num{font-size:32px}
  .stat-label{font-size:13px}
  .parse-item{grid-template-columns:1fr;gap:8px}
  .parse-num{font-size:14px;letter-spacing:.1em}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .breadcrumb .crumb-tag{display:none}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
}

/* roulang page: category2 */
:root{
  --ink-900:#171512;
  --ink-700:#2A2622;
  --ink-500:#4A443C;
  --paper:#F6F1E7;
  --paper-2:#EDE6D6;
  --card:#FBF7EE;
  --soy:#D9A62E;
  --soy-deep:#B4861B;
  --soy-soft:#F2DFA8;
  --geng:#A6402C;
  --line:rgba(23,21,18,.14);
  --line-soft:rgba(23,21,18,.08);
  --shadow-1:0 2px 0 rgba(23,21,18,.04);
  --shadow-2:0 14px 30px rgba(23,21,18,.10);
  --r-s:3px;
  --r-m:4px;
  --r-l:6px;
  --sp-1:8px;--sp-2:16px;--sp-3:24px;--sp-4:40px;--sp-5:64px;--sp-6:96px;
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Songti,serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --nav-w:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body::selection{background:var(--soy-soft);color:var(--ink-900)}
img{max-width:100%;display:block;border:0}
a{color:var(--ink-900);text-decoration:none;transition:color .18s ease,border-color .18s ease}
a:hover{color:var(--soy-deep)}
h1,h2,h3,h4,h5,p,figure,ul,ol,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea{font-family:inherit;font-size:15px;color:var(--ink-900)}
:focus-visible{outline:2px solid var(--ink-900);outline-offset:2px}

.container{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 clamp(20px,4vw,56px);
}
.serif{font-family:var(--serif);font-weight:700;letter-spacing:-.02em}

/* ---------- 左侧竖导航 ---------- */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--nav-w);
  display:flex;
  flex-direction:column;
  padding:28px 20px 20px;
  background:var(--paper);
  border-right:1px solid var(--line);
  overflow-y:auto;
  z-index:60;
}
.brand{
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding-bottom:22px;
  border-bottom:1px solid var(--line-soft);
}
.brand-mark{
  width:10px;height:10px;
  margin-top:9px;
  background:var(--soy);
  flex:0 0 auto;
}
.brand-text{
  font-family:var(--serif);
  font-weight:700;
  font-size:20px;
  line-height:1.4;
  letter-spacing:.01em;
  color:var(--ink-900);
}
.side-nav-links{
  display:flex;
  flex-direction:column;
  gap:2px;
  margin:26px 0 0;
}
.side-nav-links a{
  display:block;
  padding:9px 12px;
  font-size:15px;
  color:var(--ink-500);
  border-left:2px solid transparent;
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.side-nav-links a:hover{
  color:var(--ink-900);
  background:rgba(217,166,46,.08);
}
.side-nav-links a.is-active{
  color:var(--ink-900);
  font-weight:600;
  border-left-color:var(--soy);
  background:rgba(217,166,46,.10);
}
.side-nav-foot{
  margin-top:auto;
  padding-top:26px;
  border-top:1px solid var(--line-soft);
  font-size:13px;
  line-height:1.8;
  color:var(--ink-500);
}
.side-nav-foot .foot-label{
  display:block;
  font-size:11px;
  letter-spacing:.12em;
  color:var(--soy-deep);
  margin-bottom:6px;
}
.side-nav-foot a{color:var(--ink-700);border-bottom:1px solid transparent}
.side-nav-foot a:hover{border-bottom-color:var(--soy)}
.side-nav-copy{
  margin-top:18px;
  padding-top:14px;
  border-top:1px solid var(--line-soft);
  font-size:12px;
  letter-spacing:.02em;
  color:var(--ink-500);
}

/* ---------- 移动端栏与抽屉 ---------- */
.mobile-bar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:56px;
  align-items:center;
  justify-content:space-between;
  padding:0 18px;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  z-index:80;
}
.mobile-brand{
  font-family:var(--serif);
  font-weight:700;
  font-size:16px;
  letter-spacing:.01em;
}
.menu-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:36px;
  padding:0 14px;
  font-size:13px;
  border:1px solid var(--ink-900);
  border-radius:var(--r-m);
  transition:background .18s ease,color .18s ease;
}
.menu-btn:hover{background:var(--ink-900);color:var(--paper)}
.menu-btn .bars{display:inline-block;width:14px;height:1px;background:currentColor;position:relative}
.menu-btn .bars::before,.menu-btn .bars::after{
  content:"";position:absolute;left:0;width:14px;height:1px;background:currentColor;
}
.menu-btn .bars::before{top:-4px}
.menu-btn .bars::after{top:4px}
.drawer-overlay{
  position:fixed;inset:0;
  background:rgba(23,21,18,.42);
  opacity:0;visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease;
  z-index:90;
}
.drawer-overlay.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:84vw;
  max-width:360px;
  background:var(--paper);
  border-left:1px solid var(--line);
  padding:24px 22px;
  transform:translateX(100%);
  transition:transform .28s cubic-bezier(.2,.7,.2,1);
  overflow-y:auto;
  z-index:95;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:16px;border-bottom:1px solid var(--line);
  font-family:var(--serif);font-weight:700;font-size:17px;
}
.drawer-close{
  width:34px;height:34px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-m);
  font-size:16px;line-height:1;
}
.drawer-close:hover{border-color:var(--ink-900)}
.drawer-nav{display:flex;flex-direction:column;margin:18px 0 24px}
.drawer-nav a{
  padding:12px 0;
  font-size:15px;
  color:var(--ink-700);
  border-bottom:1px solid var(--line-soft);
}
.drawer-nav a.is-active{color:var(--soy-deep);font-weight:600}
.drawer-cta{
  display:block;text-align:center;
  height:44px;line-height:42px;
  border:1px solid var(--ink-900);border-radius:var(--r-m);
  font-size:14px;font-weight:600;
  transition:background .18s ease,color .18s ease;
}
.drawer-cta:hover{background:var(--ink-900);color:var(--paper)}
.drawer-note{margin-top:20px;font-size:13px;line-height:1.8;color:var(--ink-500)}

/* ---------- 内容区 ---------- */
.page{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}
.topbar{
  border-bottom:1px solid var(--line);
  padding:14px 0;
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.06em;color:var(--ink-500);
}
.breadcrumb a{color:var(--ink-500)}
.breadcrumb a:hover{color:var(--ink-900);text-decoration:underline;text-underline-offset:3px}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--ink-700)}

/* ---------- Hero ---------- */
.cat-hero{padding:clamp(48px,6vw,80px) 0 clamp(40px,5vw,64px);border-bottom:1px solid var(--line)}
.hero-grid{
  display:grid;
  grid-template-columns:1.3fr .7fr;
  gap:clamp(28px,4vw,56px);
  align-items:start;
}
.kicker{
  display:inline-block;
  font-size:11px;
  letter-spacing:.16em;
  color:var(--geng);
  border:1px solid rgba(166,64,44,.4);
  padding:3px 9px;
  border-radius:var(--r-s);
  margin-bottom:20px;
}
.cat-hero h1{
  font-family:var(--serif);
  font-weight:700;
  font-size:clamp(32px,4.4vw,52px);
  line-height:1.16;
  letter-spacing:-.02em;
  margin-bottom:20px;
}
.cat-hero h1 em{
  font-style:normal;
  background:linear-gradient(transparent 68%,var(--soy-soft) 68%);
}
.hero-lead{
  font-size:17px;
  line-height:1.9;
  color:var(--ink-500);
  max-width:34em;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  margin-top:26px;
  padding-top:18px;
  border-top:1px solid var(--line-soft);
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--ink-500);
}
.hero-meta span{display:inline-flex;align-items:center;gap:14px}
.hero-meta span+span::before{content:"";display:inline-block;width:1px;height:11px;background:var(--line)}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:30px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 24px;
  border-radius:var(--r-m);
  font-size:15px;font-weight:600;
  transition:background .18s ease,color .18s ease,transform .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--soy);color:var(--ink-900)}
.btn-primary:hover{background:var(--soy-deep);color:var(--ink-900);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border:1px solid var(--ink-900);color:var(--ink-900);background:transparent}
.btn-ghost:hover{background:var(--ink-900);color:var(--paper)}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--ink-900);
  border-bottom:1px solid var(--line);
  padding-bottom:2px;
}
.link-arrow .arw{transition:transform .18s ease}
.link-arrow:hover .arw{transform:translateX(3px)}

.hero-figure{position:relative}
.hero-figure .frame{
  border:1px solid var(--line);
  overflow:hidden;
  background:var(--paper-2);
  aspect-ratio:4/5;
}
.hero-figure .frame img{width:100%;height:100%;object-fit:cover}
.hero-figure::after{
  content:"";
  position:absolute;
  left:24px;right:-14px;bottom:-14px;top:24px;
  border:1px solid var(--soy);
  pointer-events:none;
}
.hero-caption{
  margin-top:22px;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--ink-500);
}

/* ---------- 通用板块 ---------- */
.section{padding:clamp(48px,6vw,88px) 0;border-bottom:1px solid var(--line)}
.section:last-of-type{border-bottom:0}
.section-head{margin-bottom:clamp(28px,3.4vw,44px);max-width:44em}
.section-head .label{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--soy-deep);
  display:block;
  margin-bottom:12px;
}
.section-head h2{
  font-family:var(--serif);
  font-weight:700;
  font-size:clamp(24px,3vw,36px);
  line-height:1.24;
  letter-spacing:-.02em;
  margin-bottom:12px;
}
.section-head p{color:var(--ink-500);font-size:15px;line-height:1.85;max-width:36em}
.section-head .head-row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;
}

/* ---------- 人物卡片栅格 ---------- */
.cast-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.cast-card{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .2s cubic-bezier(.2,.7,.2,1),box-shadow .2s ease,border-color .2s ease;
}
.cast-card:hover{
  transform:translateY(-2px);
  border-color:var(--ink-900);
  box-shadow:var(--shadow-2);
}
.cast-media{
  position:relative;
  aspect-ratio:1/1;
  background:var(--paper-2);
  overflow:hidden;
}
.cast-media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .35s cubic-bezier(.2,.7,.2,1);
}
.cast-card:hover .cast-media img{transform:scale(1.03)}
.cast-badge{
  position:absolute;
  top:12px;left:12px;
  font-size:11px;
  letter-spacing:.08em;
  padding:4px 8px;
  background:rgba(246,241,231,.92);
  border:1px solid var(--soy);
  color:var(--soy-deep);
  border-radius:var(--r-s);
}
.cast-badge.is-plain{border-color:var(--line);color:var(--ink-700)}
.cast-body{padding:20px 20px 22px}
.cast-name{
  display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;
  margin-bottom:10px;
}
.cast-name h3{
  font-family:var(--serif);
  font-weight:700;
  font-size:20px;
  line-height:1.35;
  letter-spacing:-.01em;
}
.cast-name .role{
  font-family:var(--mono);
  font-size:12px;
  color:var(--ink-500);
  letter-spacing:.04em;
}
.cast-body p{font-size:14px;line-height:1.85;color:var(--ink-500)}
.cast-meta{
  margin-top:14px;padding-top:12px;
  border-top:1px solid var(--line-soft);
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.03em;
  color:var(--ink-500);
  display:flex;justify-content:space-between;gap:10px;
}

/* ---------- 更次对照 ---------- */
.table-wrap{
  border:1px solid var(--line);
  border-radius:var(--r-m);
  overflow-x:auto;
  background:var(--card);
}
table.compare{
  width:100%;
  border-collapse:collapse;
  min-width:600px;
  font-size:14px;
}
table.compare th,table.compare td{
  padding:14px 18px;
  text-align:left;
  border-bottom:1px solid var(--line-soft);
  vertical-align:top;
}
table.compare thead th{
  background:var(--paper-2);
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--ink-700);
  font-weight:600;
  border-bottom:1px solid var(--line);
}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare tbody tr:hover{background:rgba(217,166,46,.08)}
table.compare td:first-child{
  font-family:var(--mono);
  font-size:13px;
  color:var(--soy-deep);
  letter-spacing:.04em;
  white-space:nowrap;
}
table.compare td:nth-child(2){
  font-family:var(--mono);
  font-size:13px;
  color:var(--ink-500);
  white-space:nowrap;
}
.table-note{
  margin-top:14px;
  font-size:13px;
  color:var(--ink-500);
  line-height:1.8;
}

/* ---------- 随身物件 ---------- */
.props-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0 40px;
}
.prop{
  display:flex;
  gap:18px;
  padding:22px 0;
  border-top:1px solid var(--line-soft);
  transition:transform .18s ease;
}
.prop:hover{transform:translateX(4px)}
.prop .num{
  font-family:var(--mono);
  font-size:13px;
  color:var(--soy-deep);
  letter-spacing:.06em;
  padding-top:3px;
  flex:0 0 auto;
}
.prop h3{
  font-family:var(--serif);
  font-weight:700;
  font-size:18px;
  line-height:1.4;
  margin-bottom:6px;
}
.prop p{font-size:14px;line-height:1.85;color:var(--ink-500)}

/* ---------- 读法时间轴 ---------- */
.timeline{
  position:relative;
  padding-left:34px;
  max-width:760px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:5px;top:8px;bottom:10px;
  width:2px;
  background:linear-gradient(var(--soy),rgba(217,166,46,.18));
}
.tl-step{position:relative;padding-bottom:32px}
.tl-step:last-child{padding-bottom:0}
.tl-step::before{
  content:"";
  position:absolute;
  left:-34px;top:6px;
  width:11px;height:11px;
  border-radius:50%;
  background:var(--paper);
  border:2px solid var(--soy);
}
.tl-step h3{
  font-family:var(--serif);
  font-weight:700;
  font-size:18px;
  line-height:1.4;
  margin-bottom:6px;
}
.tl-step h3 .step-no{
  font-family:var(--mono);
  font-size:12px;
  color:var(--ink-500);
  letter-spacing:.1em;
  margin-right:10px;
}
.tl-step p{font-size:15px;line-height:1.85;color:var(--ink-500);max-width:36em}

/* ---------- 反色提示带 ---------- */
.dark-band{
  background:var(--ink-900);
  color:var(--paper);
  padding:clamp(40px,5vw,64px) 0;
}
.dark-band .inner{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:clamp(24px,4vw,56px);
  align-items:center;
}
.dark-band h2{
  font-family:var(--serif);
  font-weight:700;
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.3;
  letter-spacing:-.01em;
  margin-bottom:14px;
}
.dark-band p{color:rgba(246,241,231,.76);font-size:15px;line-height:1.85}
.band-stats{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.stat{border-left:2px solid var(--soy);padding-left:16px}
.stat .num{
  font-family:var(--mono);
  font-size:34px;
  line-height:1.1;
  color:var(--soy);
  font-variant-numeric:tabular-nums;
  display:block;
}
.stat .num small{font-size:13px;color:rgba(246,241,231,.7);margin-left:4px;letter-spacing:.06em}
.stat .txt{font-size:13px;color:rgba(246,241,231,.72);line-height:1.7;margin-top:6px;display:block}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 0;
  text-align:left;
  font-family:var(--serif);
  font-weight:700;
  font-size:17px;
  line-height:1.5;
  color:var(--ink-900);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--soy-deep)}
.faq-q .plus{
  position:relative;
  flex:0 0 auto;
  width:20px;height:20px;
  transition:transform .22s ease;
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;background:var(--ink-700);transition:background .22s ease;
}
.faq-q .plus::before{left:9px;top:0;width:2px;height:20px}
.faq-q .plus::after{top:9px;left:0;height:2px;width:20px}
.faq-item.is-open .faq-q{color:var(--ink-900)}
.faq-item.is-open .faq-q .plus{transform:rotate(45deg)}
.faq-item.is-open .faq-q .plus::before,.faq-item.is-open .faq-q .plus::after{background:var(--soy-deep)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .24s cubic-bezier(.2,.7,.2,1);
}
.faq-a p{
  padding:0 0 22px;
  font-size:15px;
  line-height:1.9;
  color:var(--ink-500);
  max-width:44em;
}

/* ---------- CTA ---------- */
.cta-wrap{padding:clamp(44px,5vw,72px) 0}
.cta-band{
  border:1px solid var(--line);
  border-radius:var(--r-m);
  background:var(--paper-2);
  padding:clamp(28px,4vw,48px);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.cta-band h2{
  font-family:var(--serif);
  font-weight:700;
  font-size:clamp(20px,2.4vw,26px);
  line-height:1.35;
  letter-spacing:-.01em;
  margin-bottom:8px;
}
.cta-band p{font-size:14px;color:var(--ink-500);line-height:1.8}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);
  color:var(--paper);
  padding:clamp(48px,5vw,72px) 0 24px;
  margin-top:auto;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr .9fr 1.1fr 1fr;
  gap:32px;
}
.footer-brand{
  display:inline-block;
  font-family:var(--serif);
  font-weight:700;
  font-size:20px;
  line-height:1.4;
  color:var(--paper);
  margin-bottom:14px;
}
.footer-brand:hover{color:var(--soy)}
.footer-col p{font-size:13px;line-height:1.85;color:rgba(246,241,231,.66)}
.footer-col h5{
  font-size:12px;
  letter-spacing:.12em;
  color:var(--soy);
  margin-bottom:14px;
  font-weight:600;
}
.footer-col a{
  display:block;
  font-size:13px;
  line-height:1.9;
  color:rgba(246,241,231,.78);
  padding:2px 0;
}
.footer-col a:hover{color:var(--soy);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  margin-top:40px;
  padding-top:18px;
  border-top:1px solid rgba(246,241,231,.16);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12px;
  letter-spacing:.02em;
  color:rgba(246,241,231,.56);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:22px;bottom:22px;
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--r-m);
  background:var(--paper);
  color:var(--ink-700);
  font-size:15px;
  z-index:70;
  opacity:0;visibility:hidden;
  transform:translateY(8px);
  transition:opacity .22s ease,visibility .22s ease,transform .22s ease,border-color .18s ease;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--ink-900);color:var(--ink-900)}

/* ---------- 进场动画 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .24s cubic-bezier(.2,.7,.2,1),transform .24s cubic-bezier(.2,.7,.2,1)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero-grid{grid-template-columns:1.35fr .65fr;gap:32px}
  .cast-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
}
@media (max-width:1023px){
  .side-nav{display:none}
  .mobile-bar{display:flex}
  .page{margin-left:0;padding-top:56px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-figure{max-width:420px}
  .hero-figure::after{left:18px;right:-12px;bottom:-12px;top:18px}
  .cast-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .props-grid{grid-template-columns:1fr}
  .dark-band .inner{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .section{padding:56px 0}
}
@media (max-width:767px){
  .cat-hero h1{font-size:clamp(28px,7.2vw,36px)}
  .hero-lead{font-size:16px}
  .cast-grid{grid-template-columns:1fr}
  .band-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
  .stat .num{font-size:28px}
  .cta-band{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .btn{width:100%}
  .cta-actions .link-arrow{width:auto}
}
@media (max-width:519px){
  .container{padding:0 20px}
  .hero-meta{gap:10px;font-size:11px}
  .hero-meta span+span::before{height:10px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;gap:8px}
  .section{padding:44px 0}
  .faq-q{font-size:16px;padding:18px 0}
  .to-top{right:14px;bottom:14px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink-900:#171512;
  --ink-700:#2A2622;
  --ink-500:#4A443C;
  --paper:#F6F1E7;
  --paper-2:#EDE6D6;
  --soy:#D9A62E;
  --soy-deep:#B4861B;
  --soy-soft:#F2DFA8;
  --geng:#A6402C;
  --line:rgba(23,21,18,.14);
  --line-soft:rgba(23,21,18,.08);
  --shadow-1:0 2px 0 rgba(23,21,18,.04);
  --shadow-2:0 14px 30px rgba(23,21,18,.10);
  --r-s:3px;
  --r-m:4px;
  --r-l:6px;
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:40px;
  --sp-5:64px;
  --sp-6:96px;
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --nav-w:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--ink-700);text-decoration:none}
a:hover{color:var(--ink-900)}
button{font-family:inherit}
h1,h2,h3,h4,h5{font-family:var(--serif);color:var(--ink-900);font-weight:700;letter-spacing:-.02em;margin:0}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0 0 1em;padding-left:1.2em}
li{line-height:1.8}
::selection{background:var(--soy-soft);color:var(--ink-900)}
:focus-visible{outline:2px solid var(--ink-900);outline-offset:2px}

/* Foundation 覆盖 */
.button,button,.button.secondary,.button.hollow{border-radius:var(--r-m);box-shadow:none;font-family:var(--sans)}
.accordion,.accordion-item{border:0;background:transparent}
.reveal{border:0;border-radius:var(--r-l);box-shadow:var(--shadow-2)}
a:not(.btn):not(.brand-mark){color:var(--ink-700)}

/* 布局骨架 */
.shell{min-height:100vh}
.content-area{margin-left:var(--nav-w)}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 5vw}

/* 侧边竖导航 */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:var(--paper);
  border-right:1px solid var(--line);
  padding:32px 22px 24px;
  display:flex;flex-direction:column;
  gap:28px;
  z-index:40;
}
.brand-mark{display:flex;gap:10px;align-items:flex-start}
.brand-tag{width:10px;height:10px;background:var(--soy);margin-top:9px;flex:0 0 auto}
.brand-text{
  font-family:var(--serif);font-size:20px;line-height:1.35;font-weight:700;
  color:var(--ink-900);letter-spacing:.01em;
}
.side-nav-links{display:flex;flex-direction:column}
.side-nav-links a{
  position:relative;display:block;
  padding:11px 0 11px 14px;
  font-size:15px;color:var(--ink-500);
  border-top:1px solid var(--line-soft);
  transition:color .18s ease,padding-left .18s ease;
}
.side-nav-links a:first-child{border-top:0}
.side-nav-links a::before{
  content:"";position:absolute;left:0;top:50%;
  width:2px;height:0;background:var(--soy);
  transform:translateY(-50%);
  transition:height .2s cubic-bezier(.2,.7,.2,1);
}
.side-nav-links a:hover{color:var(--ink-900)}
.side-nav-links a:hover::before{height:14px}
.side-nav-links a.is-active{color:var(--ink-900);font-weight:600}
.side-nav-links a.is-active::before{height:18px}
.side-nav-foot{margin-top:auto;font-size:12.5px;line-height:1.7;color:var(--ink-500)}
.side-nav-foot .foot-label{
  font-size:11px;letter-spacing:.1em;color:var(--ink-500);
  text-transform:uppercase;margin-bottom:6px;
}
.side-nav-foot a{display:block;font-family:var(--mono);font-size:12.5px;color:var(--ink-700);margin-bottom:8px}
.side-nav-foot a:hover{color:var(--soy-deep);text-decoration:underline;text-underline-offset:3px}
.side-nav-foot .copy{
  margin-top:14px;padding-top:12px;border-top:1px solid var(--line-soft);
  font-size:11.5px;color:rgba(74,68,60,.8);
}

/* 移动端顶栏与抽屉 */
.topbar{display:none}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;
  background:var(--paper);border-left:1px solid var(--line);
  padding:24px 22px;z-index:70;
  transform:translateX(105%);
  transition:transform .26s cubic-bezier(.2,.7,.2,1);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.drawer-head span{font-family:var(--serif);font-size:17px;color:var(--ink-900);font-weight:700}
.drawer-close{
  width:32px;height:32px;border:1px solid var(--line);background:transparent;
  border-radius:var(--r-s);font-size:16px;line-height:1;color:var(--ink-700);
  cursor:pointer;transition:border-color .18s,color .18s;
}
.drawer-close:hover{border-color:var(--ink-900);color:var(--ink-900)}
.drawer .side-nav-links a{padding:12px 0 12px 14px;font-size:15.5px}
.drawer-foot{margin-top:24px;padding-top:18px;border-top:1px solid var(--line-soft);font-size:13px;color:var(--ink-500)}
.drawer-foot a{font-family:var(--mono);font-size:13px;color:var(--ink-700)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(23,21,18,.42);
  opacity:0;pointer-events:none;transition:opacity .22s ease;z-index:65;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.menu-btn{
  display:inline-flex;align-items:center;gap:8px;
  height:36px;padding:0 12px;background:transparent;
  border:1px solid var(--line);border-radius:var(--r-s);
  font-size:13px;color:var(--ink-900);cursor:pointer;
  transition:border-color .18s ease;
}
.menu-btn:hover{border-color:var(--ink-900)}
.menu-btn i{display:block;width:14px;height:2px;background:var(--ink-900);position:relative}
.menu-btn i::before,.menu-btn i::after{
  content:"";position:absolute;left:0;width:14px;height:2px;background:var(--ink-900);
}
.menu-btn i::before{top:-5px}
.menu-btn i::after{top:5px}

/* 通用元素 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-m);
  font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  border:1px solid transparent;
}
.btn-primary{background:var(--soy);color:var(--ink-900);border-color:var(--soy)}
.btn-primary:hover{background:var(--soy-deep);border-color:var(--soy-deep);color:var(--ink-900);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--ink-900)}
.btn-ghost:hover{background:var(--ink-900);color:var(--paper);transform:translateY(-1px)}
.btn-dark{background:var(--ink-900);color:var(--paper);border-color:var(--ink-900)}
.btn-dark:hover{background:var(--ink-700);border-color:var(--ink-700);color:var(--paper);transform:translateY(-1px)}
.btn:focus-visible{outline:2px solid var(--ink-900);outline-offset:2px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--ink-900);font-weight:600;
  border-bottom:1px solid transparent;padding-bottom:2px;
  transition:border-color .18s ease;
}
.link-arrow .arw{transition:transform .18s ease}
.link-arrow:hover{border-bottom-color:var(--ink-900)}
.link-arrow:hover .arw{transform:translateX(3px)}
.badge{
  display:inline-block;font-size:11px;letter-spacing:.08em;
  padding:4px 8px;border:1px solid var(--line);border-radius:var(--r-s);
  color:var(--ink-500);line-height:1.4;background:transparent;
}
.badge-soy{border-color:var(--soy-deep);color:var(--soy-deep)}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* 首屏 */
.cat-hero{padding:56px 0 64px;border-bottom:1px solid var(--line);background:var(--paper)}
.crumb{
  display:flex;flex-wrap:wrap;gap:8px;align-items:center;
  font-size:12px;letter-spacing:.06em;color:var(--ink-500);
  margin-bottom:22px;
}
.crumb a{color:var(--ink-500)}
.crumb a:hover{color:var(--ink-900);text-decoration:underline;text-underline-offset:3px}
.crumb .now{color:var(--ink-500)}
.cat-hero h1{
  font-size:clamp(30px,4vw,46px);line-height:1.2;
  margin-bottom:18px;max-width:16em;
}
.lede{
  font-size:16.5px;line-height:1.9;color:var(--ink-500);
  max-width:34em;margin-bottom:24px;
}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:12.5px;letter-spacing:.04em;color:var(--ink-500);
  margin-bottom:28px;
}
.hero-meta .sep{width:1px;height:12px;background:var(--line)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-media{position:relative;margin:0}
.hero-media::after{
  content:"";position:absolute;left:24px;top:24px;right:-24px;bottom:-24px;
  border:1px solid var(--soy);border-radius:var(--r-m);z-index:0;pointer-events:none;
}
.hero-media img{
  position:relative;z-index:1;width:100%;aspect-ratio:16/9;object-fit:cover;
  border:1px solid var(--line);border-radius:var(--r-m);background:var(--paper-2);
}
.hero-media figcaption{
  position:relative;z-index:1;margin-top:12px;font-size:12.5px;color:var(--ink-500);
}

/* 板块通用 */
.section{padding:96px 0;border-bottom:1px solid var(--line)}
.section.tight{padding:72px 0}
.section.last{border-bottom:0}
.sec-head{margin-bottom:40px}
.sec-kicker{
  font-size:12px;letter-spacing:.1em;color:var(--soy-deep);
  font-weight:600;margin-bottom:10px;display:block;
}
.sec-head h2{font-size:clamp(26px,3.2vw,38px);line-height:1.22;margin-bottom:14px}
.sec-head p{color:var(--ink-500);max-width:34em}
.narrow{max-width:720px;margin:0 auto}

/* 准备事项三卡 */
.prep-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.prep-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-m);
  padding:24px;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.prep-card:hover{border-color:var(--ink-900);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.prep-card .num{
  font-family:var(--mono);font-size:13px;color:var(--soy-deep);
  letter-spacing:.08em;display:block;margin-bottom:10px;
}
.prep-card h3{font-size:19px;margin-bottom:10px}
.prep-card p{font-size:14.5px;line-height:1.8;color:var(--ink-500);margin:0}

/* 步骤区 */
.steps-wrap{max-width:720px;margin:0 auto}
.step{
  display:grid;grid-template-columns:76px 1fr;gap:24px;
  padding:30px 0;border-top:1px solid var(--line);
  transition:transform .2s ease;
}
.step:first-of-type{border-top:1px solid var(--line)}
.step:hover{transform:translateX(4px)}
.step-num{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:38px;line-height:1;color:var(--soy-deep);font-weight:500;
  padding-top:2px;
}
.step-body h3{font-size:20px;line-height:1.4;margin-bottom:8px}
.step-body p{font-size:15px;line-height:1.85;color:var(--ink-500);margin:0 0 8px}
.step-body p:last-child{margin-bottom:0}
.step-body .sub{
  font-size:13px;color:var(--ink-500);letter-spacing:.04em;
  padding-top:8px;border-top:1px dashed var(--line-soft);margin-top:12px;
}

/* 反色提示条 */
.notice{
  background:var(--ink-900);color:#EFE7D8;
  border-left:3px solid var(--soy);
  border-radius:var(--r-m);
  padding:28px 32px;margin:40px 0;
}
.notice h3{
  color:#F6F1E7;font-size:19px;line-height:1.4;margin-bottom:10px;
}
.notice h3 .tag{
  display:inline-block;font-family:var(--mono);font-size:11px;
  letter-spacing:.1em;color:var(--soy);margin-right:10px;
  border:1px solid rgba(217,166,46,.55);border-radius:var(--r-s);
  padding:2px 7px;vertical-align:2px;
}
.notice p{font-size:14.5px;line-height:1.85;color:rgba(246,241,231,.82);margin:0}
.notice p + p{margin-top:10px}

/* 小贴士列表 */
.tips-list{list-style:none;padding:0;margin:0}
.tips-list li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line-soft);
  font-size:15px;line-height:1.8;color:var(--ink-500);
}
.tips-list li:last-child{border-bottom:0}
.tips-list li::before{
  content:"";flex:0 0 auto;width:7px;height:7px;background:var(--soy);
  margin-top:11px;
}
.tips-list strong{color:var(--ink-900);font-weight:600}

/* FAQ */
.faq{border-top:1px solid var(--line)}
.faq details{
  border-bottom:1px solid var(--line);
  padding:0;
}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;justify-content:space-between;align-items:flex-start;gap:20px;
  padding:22px 0;
  font-family:var(--serif);font-size:17px;font-weight:700;color:var(--ink-900);
  line-height:1.5;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::marker{content:""}
.faq .plus{
  flex:0 0 auto;position:relative;width:20px;height:20px;margin-top:3px;
  transition:transform .2s ease;
}
.faq .plus::before,.faq .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink-700);
  transition:background-color .2s ease;
}
.faq .plus::before{width:14px;height:1.5px;transform:translate(-50%,-50%)}
.faq .plus::after{width:1.5px;height:14px;transform:translate(-50%,-50%)}
.faq details[open] .plus{transform:rotate(45deg)}
.faq details[open] .plus::before,.faq details[open] .plus::after{background:var(--soy-deep)}
.faq .answer{
  padding:0 40px 24px 0;font-size:15px;line-height:1.85;color:var(--ink-500);
}
.faq .answer p{margin:0 0 .8em}
.faq .answer p:last-child{margin-bottom:0}

/* CTA 带 */
.cta-band{
  background:var(--soy);border-radius:var(--r-l);
  padding:48px;display:flex;flex-wrap:wrap;align-items:center;
  justify-content:space-between;gap:28px;
}
.cta-band h2{
  font-size:clamp(22px,2.6vw,30px);line-height:1.3;color:var(--ink-900);
  margin-bottom:8px;max-width:20em;
}
.cta-band p{font-size:14.5px;line-height:1.8;color:rgba(23,21,18,.78);margin:0;max-width:34em}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px}
.cta-actions .link-arrow{color:var(--ink-900)}
.cta-actions .link-arrow:hover{border-bottom-color:var(--ink-900)}

/* 页脚 */
.site-footer{background:var(--ink-900);color:rgba(246,241,231,.72);padding:72px 0 24px;margin-top:0}
.site-footer .container{max-width:1180px}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1.2fr 1.1fr;gap:40px;
  padding-bottom:48px;border-bottom:1px solid rgba(246,241,231,.14);
}
.footer-col h5{
  font-family:var(--sans);font-size:13px;letter-spacing:.1em;
  color:#F6F1E7;margin:0 0 14px;font-weight:600;
}
.footer-brand{
  display:block;font-family:var(--serif);font-size:20px;line-height:1.4;
  color:#F6F1E7;font-weight:700;margin-bottom:14px;
}
.footer-brand:hover{color:var(--soy)}
.footer-col p{font-size:13.5px;line-height:1.85;color:rgba(246,241,231,.66);margin:0}
.footer-col a{
  display:block;font-size:13.5px;color:rgba(246,241,231,.72);
  padding:4px 0;transition:color .18s ease;
}
.footer-col a:hover{color:var(--soy);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding-top:20px;font-size:12px;color:rgba(246,241,231,.52);
}

/* 进场动效 */
.reveal-up{opacity:0;transform:translateY(12px);transition:opacity .24s cubic-bezier(.2,.7,.2,1),transform .24s cubic-bezier(.2,.7,.2,1)}
.reveal-up.in{opacity:1;transform:none}

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

/* 断点 */
@media (max-width:1199px){
  .container{padding:0 4vw}
  .cta-band{padding:40px}
}
@media (max-width:1023px){
  .side-nav{display:none}
  .content-area{margin-left:0;padding-top:56px}
  .topbar{
    display:flex;position:fixed;top:0;left:0;right:0;height:56px;
    align-items:center;justify-content:space-between;
    padding:0 18px;background:var(--paper);border-bottom:1px solid var(--line);
    z-index:50;
  }
  .topbar .brand-text{font-size:16px;line-height:1.3}
  .topbar .brand-tag{margin-top:6px;width:8px;height:8px}
  .section{padding:72px 0}
  .section.tight{padding:56px 0}
  .cat-hero{padding:40px 0 48px}
  .hero-media{margin-top:36px}
  .hero-media::after{right:auto;bottom:auto;left:16px;top:16px;width:100%;height:100%}
  .prep-grid{grid-template-columns:1fr;gap:16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 32px}
  .section{padding:56px 0}
  .step{grid-template-columns:56px 1fr;gap:16px;padding:24px 0}
  .step-num{font-size:30px}
  .step-body h3{font-size:18px}
  .notice{padding:22px 22px;margin:32px 0}
  .cta-band{padding:32px 24px;flex-direction:column;align-items:flex-start}
  .faq summary{font-size:16px;padding:18px 0}
  .faq .answer{padding-right:0}
}
@media (max-width:519px){
  .container{padding:0 20px}
  body{font-size:15.5px}
  .cat-hero h1{font-size:clamp(26px,7vw,32px)}
  .lede{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .hero-actions{flex-direction:column;align-items:stretch}
  .step{grid-template-columns:1fr;gap:8px}
  .step-num{font-size:26px}
  .footer-grid{grid-template-columns:1fr}
  .cta-actions{flex-direction:column;align-items:stretch;gap:14px}
  .cta-actions .btn{width:100%}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category4 */
:root{
  --ink-900:#171512;
  --ink-700:#2A2622;
  --ink-500:#4A443C;
  --paper:#F6F1E7;
  --paper-2:#EDE6D6;
  --soy:#D9A62E;
  --soy-deep:#B4861B;
  --soy-soft:#F2DFA8;
  --geng:#A6402C;
  --line:rgba(23,21,18,.14);
  --line-soft:rgba(23,21,18,.08);
  --shadow-1:0 2px 0 rgba(23,21,18,.04);
  --shadow-2:0 14px 30px rgba(23,21,18,.10);
  --r-s:3px;
  --r-m:4px;
  --r-l:6px;
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:40px;
  --sp-5:64px;
  --sp-6:96px;
  --serif:"Noto Serif SC","思源宋体","Songti SC",Songti,serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --nav-w:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
a:hover{color:var(--ink-900)}
button{font-family:inherit}
h1,h2,h3,h4,h5{margin:0;font-family:var(--serif);font-weight:700;letter-spacing:-.02em;color:var(--ink-900)}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:var(--soy-soft);color:var(--ink-900)}
:focus-visible{outline:2px solid var(--ink-900);outline-offset:2px}

/* ---------- 布局骨架 ---------- */
.container{width:100%;max-width:1120px;margin:0 auto;padding-left:5vw;padding-right:5vw}
.main-wrap{margin-left:var(--nav-w);min-height:100vh}
.section{padding:var(--sp-6) 0;border-bottom:1px solid var(--line-soft)}
.section:last-of-type{border-bottom:0}

/* ---------- 左侧竖导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;
  background:var(--paper);border-right:1px solid var(--line);
  padding:36px 24px 24px;display:flex;flex-direction:column;
  z-index:120;overflow-y:auto;
}
.brand{display:block;margin-bottom:var(--sp-4)}
.brand-mark{display:inline-block;width:14px;height:14px;background:var(--soy);border-radius:2px;margin-bottom:12px}
.brand-name{font-family:var(--serif);font-size:20px;line-height:1.4;color:var(--ink-900);letter-spacing:.01em}
.brand-sub{display:block;margin-top:8px;font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--ink-500);text-transform:uppercase}
.side-nav-links{display:flex;flex-direction:column;margin-top:var(--sp-3)}
.side-nav-links a{
  position:relative;display:block;padding:11px 0 11px 16px;
  font-size:15px;color:var(--ink-700);border-bottom:1px solid var(--line-soft);
  transition:color .2s ease,transform .2s ease;
}
.side-nav-links a::before{
  content:"";position:absolute;left:0;top:50%;width:2px;height:16px;
  background:var(--soy);transform:translateY(-50%) scaleY(0);
  transition:transform .22s cubic-bezier(.2,.7,.2,1);
}
.side-nav-links a::after{
  content:"";position:absolute;left:16px;right:0;bottom:-1px;height:1px;
  background:var(--ink-900);transform:scaleX(0);transform-origin:left;
  transition:transform .24s cubic-bezier(.2,.7,.2,1);
}
.side-nav-links a:hover{color:var(--ink-900)}
.side-nav-links a:hover::before{transform:translateY(-50%) scaleY(1)}
.side-nav-links a:hover::after{transform:scaleX(1)}
.side-nav-links a.is-active{color:var(--ink-900);font-weight:600}
.side-nav-links a.is-active::before{transform:translateY(-50%) scaleY(1)}
.nav-foot{margin-top:auto;padding-top:var(--sp-4);border-top:1px solid var(--line-soft)}
.nav-foot h6{
  font-family:var(--sans);font-size:12px;letter-spacing:.1em;color:var(--ink-500);
  font-weight:600;margin:0 0 8px;
}
.nav-foot a{font-size:14px;color:var(--ink-700);border-bottom:1px solid var(--line);padding-bottom:2px;word-break:break-all}
.nav-foot a:hover{color:var(--soy-deep);border-color:var(--soy)}
.nav-foot p{font-size:12.5px;line-height:1.7;color:var(--ink-500);margin-top:12px}
.nav-copy{margin-top:var(--sp-3);font-size:11.5px;letter-spacing:.04em;color:var(--ink-500)}

/* ---------- 移动顶栏与抽屉 ---------- */
.mobile-bar{
  display:none;position:sticky;top:0;z-index:130;height:56px;
  background:rgba(246,241,231,.96);border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 20px;
}
.mobile-brand{font-family:var(--serif);font-size:16px;font-weight:700;color:var(--ink-900)}
.nav-toggle{
  display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 14px;
  background:transparent;border:1px solid var(--line);border-radius:var(--r-m);
  font-size:13px;color:var(--ink-900);cursor:pointer;
}
.nav-toggle:hover{border-color:var(--ink-900)}
.nav-toggle .bars{position:relative;width:14px;height:9px;display:inline-block}
.nav-toggle .bars span{position:absolute;left:0;width:100%;height:1.5px;background:var(--ink-900)}
.nav-toggle .bars span:first-child{top:0}
.nav-toggle .bars span:last-child{bottom:0}
.nav-mask{display:none;position:fixed;inset:0;background:rgba(23,21,18,.52);z-index:115;opacity:0;transition:opacity .26s ease}
.nav-mask.is-open{display:block;opacity:1}

/* ---------- 面包屑条 ---------- */
.topbar{border-bottom:1px solid var(--line);background:var(--paper)}
.breadcrumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:15px 0;font-size:12px;letter-spacing:.06em;color:var(--ink-500);
}
.breadcrumb a{color:var(--ink-500);border-bottom:1px solid transparent}
.breadcrumb a:hover{border-bottom-color:var(--ink-700);color:var(--ink-900)}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--ink-500)}

/* ---------- Hero ---------- */
.page-hero{padding:var(--sp-5) 0 var(--sp-6);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-block;font-family:var(--mono);font-size:11px;letter-spacing:.16em;
  color:var(--soy-deep);text-transform:uppercase;margin-bottom:16px;
  padding-bottom:6px;border-bottom:2px solid var(--soy);
}
.page-hero h1{
  font-size:clamp(30px,4.2vw,48px);line-height:1.16;margin-bottom:20px;
}
.hero-lead{font-size:17px;line-height:1.9;color:var(--ink-500);max-width:32em;margin-bottom:24px}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-family:var(--mono);font-size:12.5px;letter-spacing:.04em;color:var(--ink-500);
  margin-bottom:28px;
}
.hero-meta .dot{color:var(--line)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-m);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:transform .18s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--soy);color:var(--ink-900);border-color:var(--soy)}
.btn-primary:hover{background:var(--soy-deep);border-color:var(--soy-deep);color:var(--ink-900);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--ink-900)}
.btn-ghost:hover{background:var(--ink-900);color:var(--paper);transform:translateY(-1px)}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--ink-700);
  border-bottom:1px solid var(--line);padding-bottom:3px;
}
.link-arrow .arw{transition:transform .2s ease}
.link-arrow:hover{color:var(--ink-900);border-color:var(--ink-900)}
.link-arrow:hover .arw{transform:translateX(3px)}

/* 图框 */
.figure-frame{position:relative;isolation:isolate}
.figure-frame::after{
  content:"";position:absolute;top:18px;left:18px;
  width:calc(100% - 18px);height:calc(100% - 18px);
  border:1px solid var(--soy);z-index:0;pointer-events:none;
}
.figure-frame img{
  position:relative;z-index:1;width:100%;aspect-ratio:4/3;object-fit:cover;
  border:1px solid var(--line);background:
    repeating-linear-gradient(45deg,var(--paper-2) 0 10px,var(--paper) 10px 20px);
}
.figure-cap{
  margin-top:14px;font-size:12.5px;letter-spacing:.04em;color:var(--ink-500);
  display:flex;align-items:center;gap:8px;
}

/* ---------- 板块标题 ---------- */
.section-head{max-width:760px;margin-bottom:var(--sp-5)}
.section-head h2{font-size:clamp(26px,3.2vw,38px);line-height:1.22;margin-bottom:14px}
.section-head p{font-size:16px;color:var(--ink-500);max-width:34em}
.section-head .kicker{
  display:block;font-family:var(--mono);font-size:11px;letter-spacing:.16em;
  color:var(--soy-deep);margin-bottom:12px;text-transform:uppercase;
}

/* ---------- 图文交替 ---------- */
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:var(--sp-4) 0;
}
.feature-row + .feature-row{border-top:1px solid var(--line-soft)}
.feature-row.is-reverse .feature-figure{order:2}
.post-date{
  display:block;font-family:var(--mono);font-size:12px;letter-spacing:.08em;
  color:var(--ink-500);margin-bottom:12px;
}
.feature-row h3{font-size:clamp(19px,1.6vw,24px);line-height:1.4;margin-bottom:14px}
.feature-row .prose p{font-size:16px;line-height:1.85;color:var(--ink-500);max-width:34em;margin-bottom:14px}
.badge{
  display:inline-block;font-size:11px;letter-spacing:.08em;padding:4px 9px;
  border:1px solid var(--line);border-radius:var(--r-s);color:var(--ink-500);
  background:transparent;line-height:1.4;
}
.badge-soy{border-color:var(--soy);color:var(--soy-deep)}
.badge-ink{border-color:var(--ink-900);color:var(--ink-900)}
.points{margin-top:8px}
.points li{
  position:relative;padding-left:20px;font-size:15px;line-height:1.8;
  color:var(--ink-500);margin-bottom:8px;
}
.points li::before{
  content:"";position:absolute;left:0;top:.85em;width:10px;height:2px;background:var(--soy);
}
.points li:last-child{margin-bottom:0}

/* ---------- 参数速查 ---------- */
.spec-list{border-top:1px solid var(--line)}
.spec-row{
  display:grid;grid-template-columns:200px 1fr;gap:32px;
  padding:18px 14px;border-bottom:1px solid var(--line-soft);
  transition:background-color .2s ease;
}
.spec-row:hover{background:var(--paper-2)}
.spec-row dt{font-family:var(--serif);font-size:16px;font-weight:700;color:var(--ink-900)}
.spec-row dd{margin:0;font-size:15px;line-height:1.8;color:var(--ink-500)}
.spec-row dd .num{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--ink-900)}

/* ---------- 数据带 ---------- */
.data-band{background:var(--ink-900);color:var(--paper);padding:var(--sp-5) 0;border-bottom:0}
.data-band .band-title{
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--soy);
  text-transform:uppercase;margin-bottom:32px;
}
.stat-grid.grid-x{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px;margin:0}
.stat-grid > .cell{width:auto;flex:none;padding:0;float:none}
.stat-num{
  font-family:var(--mono);font-size:40px;line-height:1;color:var(--soy);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.stat-num small{font-family:var(--sans);font-size:13px;color:var(--paper-2);margin-left:6px;letter-spacing:.04em}
.stat-label{margin-top:12px;font-size:14px;line-height:1.7;color:rgba(246,241,231,.78);max-width:15em}

/* ---------- FAQ ---------- */
.faq{max-width:820px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  width:100%;padding:22px 0;background:none;border:0;text-align:left;cursor:pointer;
  font-family:var(--serif);font-size:17px;font-weight:700;line-height:1.5;color:var(--ink-900);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--soy-deep)}
.faq-icon{
  position:relative;flex:0 0 auto;width:20px;height:20px;margin-top:3px;
  transition:transform .22s cubic-bezier(.2,.7,.2,1),color .22s ease;color:var(--ink-500);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;
}
.faq-icon::before{width:14px;height:1.5px;transform:translate(-50%,-50%)}
.faq-icon::after{width:1.5px;height:14px;transform:translate(-50%,-50%)}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--soy-deep)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq-a p{font-size:15px;line-height:1.88;color:var(--ink-500);padding-bottom:22px;max-width:36em;margin:0}

/* ---------- CTA ---------- */
.cta-band{padding:var(--sp-5) 0}
.cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  border:1px solid var(--line);border-radius:var(--r-l);padding:36px 40px;
  background:var(--paper-2);
}
.cta-inner h2{font-size:clamp(20px,2.2vw,26px);line-height:1.4;margin-bottom:8px}
.cta-inner p{font-size:15px;color:var(--ink-500);margin:0;max-width:36em}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:var(--paper);padding:var(--sp-5) 0 28px;margin-top:0}
.footer-grid.grid-x{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:40px;margin:0}
.footer-grid > .cell{width:auto;flex:none;padding:0;float:none}
.footer-brand{
  display:block;font-family:var(--serif);font-size:19px;line-height:1.45;
  color:var(--paper);margin-bottom:16px;
}
.footer-brand:hover{color:var(--soy)}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(246,241,231,.72);max-width:26em}
.footer-col h5{
  font-family:var(--sans);font-size:13px;letter-spacing:.1em;color:var(--soy);
  font-weight:600;margin:0 0 16px;
}
.footer-col a{
  display:block;font-size:14px;color:rgba(246,241,231,.85);margin-bottom:10px;
  border-bottom:1px solid transparent;width:fit-content;
}
.footer-col a:hover{color:var(--soy);border-bottom-color:var(--soy)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:var(--sp-4);padding-top:20px;border-top:1px solid rgba(246,241,231,.16);
  font-size:12px;letter-spacing:.04em;color:rgba(246,241,231,.6);
}

/* 回到顶部 */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;z-index:100;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-m);
  color:var(--ink-900);font-size:16px;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .24s ease,transform .24s ease,visibility .24s ease,border-color .2s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--ink-900);background:var(--soy-soft)}

/* 进场动效 */
.reveal-up{opacity:0;transform:translateY(12px);transition:opacity .24s cubic-bezier(.2,.7,.2,1),transform .24s cubic-bezier(.2,.7,.2,1)}
.reveal-up.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero-grid{gap:40px}
}
@media (max-width:1023px){
  .mobile-bar{display:flex}
  .main-wrap{margin-left:0}
  .side-nav{
    left:auto;right:0;width:84vw;max-width:360px;height:100%;
    transform:translateX(102%);transition:transform .28s cubic-bezier(.2,.7,.2,1);
    border-right:0;border-left:1px solid var(--line);padding-top:28px;
  }
  .side-nav.is-open{transform:none}
  .section{padding:72px 0}
  .page-hero{padding:48px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .feature-row{grid-template-columns:1fr;gap:32px;padding:36px 0}
  .feature-row.is-reverse .feature-figure{order:0}
  .stat-grid.grid-x{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .footer-grid.grid-x{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .cta-inner{padding:28px 24px}
}
@media (max-width:767px){
  .container{padding-left:20px;padding-right:20px}
  .section{padding:56px 0}
  .page-hero h1{font-size:clamp(28px,7vw,36px)}
  .hero-lead{font-size:16px}
  .spec-row{grid-template-columns:1fr;gap:8px;padding:16px 10px}
  .hero-actions .btn{width:100%}
  .hero-actions .link-arrow{width:100%;justify-content:flex-start}
  .data-band{padding:48px 0}
  .stat-num{font-size:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:519px){
  .footer-grid.grid-x{grid-template-columns:1fr;gap:28px}
  .stat-grid.grid-x{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-inner{padding:24px 18px}
  .faq-q{font-size:16px;gap:12px}
  .to-top{right:16px;bottom:16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal-up{opacity:1;transform:none}
}

/* roulang page: category5 */
:root{
  --ink-900:#171512;
  --ink-700:#2A2622;
  --ink-500:#4A443C;
  --paper:#F6F1E7;
  --paper-2:#EDE6D6;
  --soy:#D9A62E;
  --soy-deep:#B4861B;
  --soy-soft:#F2DFA8;
  --geng:#A6402C;
  --line:rgba(23,21,18,.14);
  --line-soft:rgba(23,21,18,.08);
  --shadow-1:0 2px 0 rgba(23,21,18,.04);
  --shadow-2:0 14px 30px rgba(23,21,18,.10);
  --r-s:3px;
  --r-m:4px;
  --r-l:6px;
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:40px;
  --sp-5:64px;
  --sp-6:96px;
  --nav-w:248px;
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC","SimSun",serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
a:hover{color:inherit;}
button{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;font-family:var(--serif);font-weight:700;letter-spacing:-.02em;color:var(--ink-900);}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:var(--soy-soft);color:var(--ink-900);}
:focus-visible{outline:2px solid var(--ink-900);outline-offset:3px;}

.container{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 5vw;
}

/* ---------- 侧边导航 ---------- */
.side-nav{
  position:fixed;
  top:0;left:0;
  width:var(--nav-w);
  height:100vh;
  background:var(--paper);
  border-right:1px solid var(--line);
  z-index:80;
  display:flex;
  transition:transform .28s cubic-bezier(.2,.7,.2,1);
}
.side-nav-inner{
  display:flex;
  flex-direction:column;
  width:100%;
  padding:32px 24px 24px;
  overflow-y:auto;
}
.brand{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding-bottom:22px;
  border-bottom:1px solid var(--line);
}
.brand-mark{
  width:14px;height:14px;
  background:var(--soy);
  margin-top:7px;
  flex:none;
  border-radius:1px;
}
.brand-text{
  font-family:var(--serif);
  font-size:19px;
  font-weight:700;
  line-height:1.42;
  letter-spacing:-.01em;
  color:var(--ink-900);
}
.brand-sub{
  display:block;
  font-family:var(--sans);
  font-size:11px;
  font-weight:400;
  letter-spacing:.14em;
  color:var(--ink-500);
  margin-top:6px;
}
.side-nav-links{
  display:flex;
  flex-direction:column;
  margin-top:24px;
  gap:2px;
}
.side-nav-links a{
  position:relative;
  display:block;
  padding:10px 10px 10px 16px;
  font-size:15px;
  line-height:1.5;
  color:var(--ink-700);
  border-radius:var(--r-s);
  transition:background .18s ease,color .18s ease;
}
.side-nav-links a::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:2px;height:18px;
  background:var(--soy);
  transform:translateY(-50%) scaleY(0);
  transform-origin:center;
  transition:transform .2s cubic-bezier(.2,.7,.2,1);
}
.side-nav-links a:hover{background:var(--paper-2);color:var(--ink-900);}
.side-nav-links a:hover::before,
.side-nav-links a.is-active::before{transform:translateY(-50%) scaleY(1);}
.side-nav-links a.is-active{color:var(--ink-900);font-weight:600;background:transparent;}
.side-nav-foot{
  margin-top:auto;
  padding-top:24px;
  border-top:1px solid var(--line);
  font-size:13px;
  line-height:1.7;
  color:var(--ink-500);
}
.side-nav-foot .eyebrow{
  font-size:11px;
  letter-spacing:.14em;
  color:var(--soy-deep);
  margin-bottom:8px;
}
.side-nav-foot a{display:inline-block;color:var(--ink-700);border-bottom:1px solid transparent;transition:border-color .18s ease,color .18s ease;}
.side-nav-foot a:hover{color:var(--soy-deep);border-bottom-color:var(--soy);}
.side-nav-foot .copy{margin-top:14px;font-size:11px;letter-spacing:.04em;color:var(--ink-500);}

/* ---------- 移动端顶栏 ---------- */
.mobile-bar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:56px;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  z-index:90;
  align-items:center;
  justify-content:space-between;
  padding:0 20px;
}
.mobile-bar .mb-brand{
  font-family:var(--serif);
  font-size:16px;
  font-weight:700;
  letter-spacing:-.01em;
}
.mobile-bar .mb-toggle{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:36px;
  padding:0 14px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--r-s);
  font-size:13px;
  color:var(--ink-900);
  cursor:pointer;
  transition:background .18s ease,border-color .18s ease;
}
.mobile-bar .mb-toggle:hover{background:var(--paper-2);border-color:var(--ink-900);}
.mb-toggle .bars{display:inline-block;width:14px;}
.mb-toggle .bars i{display:block;height:1.5px;background:var(--ink-900);margin:3px 0;border-radius:1px;}
.nav-mask{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(23,21,18,.42);
  z-index:75;
  opacity:0;
  transition:opacity .26s ease;
}

/* ---------- 内容区 ---------- */
.page-main{
  margin-left:var(--nav-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.top-strip{
  border-bottom:1px solid var(--line);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--ink-500);
}
.top-strip .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-top:13px;
  padding-bottom:13px;
  flex-wrap:wrap;
}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.breadcrumb a{color:var(--ink-500);border-bottom:1px solid transparent;transition:border-color .18s ease;}
.breadcrumb a:hover{border-bottom-color:var(--ink-500);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--ink-500);}
.top-strip .strip-meta{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.04em;}

/* ---------- Hero ---------- */
.page-hero{
  padding:56px 0 44px;
  border-bottom:1px solid var(--line);
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--soy-deep);
}
.hero-eyebrow::before{
  content:"";
  width:20px;height:2px;
  background:var(--soy);
}
.page-hero h1{
  font-size:clamp(32px,4.6vw,52px);
  line-height:1.16;
  margin-top:18px;
  max-width:16em;
}
.hero-lead{
  margin-top:20px;
  max-width:34em;
  font-size:17px;
  line-height:1.85;
  color:var(--ink-500);
}
.update-strip{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 20px;
  margin-top:30px;
  padding:14px 20px;
  background:var(--paper-2);
  border-left:3px solid var(--soy);
  border-radius:0 var(--r-s) var(--r-s) 0;
  font-size:14px;
  color:var(--ink-700);
}
.update-strip .tag{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--soy-deep);
  border:1px solid rgba(180,134,27,.5);
  padding:2px 8px;
  border-radius:var(--r-s);
}
.update-strip b{font-weight:600;color:var(--ink-900);}
.update-strip .dot{color:var(--line);}
.update-strip em{font-style:normal;font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--ink-700);}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0;}
.section + .section{border-top:1px solid var(--line-soft);}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px 32px;
  margin-bottom:36px;
}
.section-head h2{
  font-size:clamp(26px,3.2vw,36px);
  line-height:1.22;
}
.section-head .sub{
  font-size:14px;
  color:var(--ink-500);
  max-width:32em;
  line-height:1.75;
}
.section-head .sub strong{color:var(--ink-700);font-weight:600;}

/* ---------- 更新索引表流 ---------- */
.log-table{border-top:1px solid var(--ink-900);}
.log-head{
  display:grid;
  grid-template-columns:96px 1fr 132px;
  gap:24px;
  padding:11px 12px;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--ink-500);
  border-bottom:1px solid var(--line);
}
.log-row{
  display:grid;
  grid-template-columns:96px 1fr 132px;
  gap:24px;
  align-items:baseline;
  padding:18px 12px;
  border-bottom:1px solid var(--line-soft);
  transition:background .18s ease,transform .18s ease;
}
.log-row:hover{background:var(--paper-2);}
.log-row:hover .log-body strong{color:var(--soy-deep);}
.log-date{
  font-family:var(--mono);
  font-size:13px;
  font-variant-numeric:tabular-nums;
  color:var(--ink-500);
  letter-spacing:.02em;
}
.log-date span{display:block;font-size:11px;letter-spacing:.08em;color:var(--ink-500);opacity:.75;}
.log-body strong{
  display:block;
  font-family:var(--serif);
  font-size:18px;
  line-height:1.5;
  font-weight:700;
  color:var(--ink-900);
  transition:color .18s ease;
}
.log-body em{
  display:block;
  font-style:normal;
  font-size:14px;
  line-height:1.7;
  color:var(--ink-500);
  margin-top:3px;
}
.log-tag{
  justify-self:start;
  font-size:11px;
  letter-spacing:.08em;
  border:1px solid var(--line);
  padding:3px 9px;
  border-radius:var(--r-s);
  color:var(--ink-700);
  white-space:nowrap;
  background:transparent;
}
.log-tag.is-soy{border-color:rgba(180,134,27,.55);color:var(--soy-deep);}
.log-tag.is-geng{border-color:rgba(166,64,44,.45);color:var(--geng);}
.log-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:22px;
  font-size:13px;
  color:var(--ink-500);
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--ink-900);
  border-bottom:1px solid var(--line);
  padding-bottom:2px;
  transition:border-color .18s ease,color .18s ease;
}
.text-link .arw{transition:transform .18s ease;display:inline-block;}
.text-link:hover{border-bottom-color:var(--soy);color:var(--soy-deep);}
.text-link:hover .arw{transform:translateX(3px);}

/* ---------- 修订说明三块 ---------- */
.note-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  border-top:1px solid var(--ink-900);
}
.note-col{
  padding:28px 28px 28px 0;
  border-right:1px solid var(--line-soft);
}
.note-col:last-child{border-right:0;padding-right:0;}
.note-col:not(:first-child){padding-left:28px;}
.note-col .num{
  font-family:var(--mono);
  font-size:12px;
  font-variant-numeric:tabular-nums;
  letter-spacing:.1em;
  color:var(--soy-deep);
}
.note-col h3{
  font-size:20px;
  line-height:1.4;
  margin:10px 0 10px;
}
.note-col p{font-size:14.5px;line-height:1.85;color:var(--ink-500);}

/* ---------- 幕后手记 ---------- */
.behind{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:start;
}
.behind-copy h2{
  font-size:clamp(26px,3.2vw,36px);
  line-height:1.22;
  margin-bottom:20px;
}
.note-item{
  display:flex;
  gap:18px;
  padding:18px 0;
  border-top:1px solid var(--line-soft);
}
.note-item:first-of-type{border-top:1px solid var(--line);}
.note-item .n-date{
  font-family:var(--mono);
  font-size:12px;
  font-variant-numeric:tabular-nums;
  color:var(--ink-500);
  flex:none;
  width:64px;
  padding-top:4px;
  letter-spacing:.02em;
}
.note-item h4{
  font-family:var(--serif);
  font-size:17px;
  line-height:1.5;
  margin-bottom:4px;
}
.note-item p{font-size:14px;line-height:1.8;color:var(--ink-500);}
.behind-figure{position:relative;padding:0 0 18px 18px;}
.behind-figure::after{
  content:"";
  position:absolute;
  right:18px;bottom:0;
  width:calc(100% - 36px);
  height:calc(100% - 18px);
  border:1px solid var(--soy);
  border-radius:var(--r-s);
  z-index:0;
  pointer-events:none;
}
.behind-figure .frame{
  position:relative;
  z-index:1;
  border:1px solid var(--line);
  border-radius:var(--r-s);
  overflow:hidden;
  background:var(--paper-2);
  aspect-ratio:4/3;
}
.behind-figure img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s cubic-bezier(.2,.7,.2,1);
}
.behind-figure:hover img{transform:scale(1.03);}
.behind-figure figcaption{
  position:relative;
  z-index:1;
  margin-top:12px;
  padding-left:0;
  font-size:12.5px;
  line-height:1.7;
  color:var(--ink-500);
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--ink-900);max-width:860px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px;
  padding:20px 4px;
  background:transparent;
  border:0;
  text-align:left;
  cursor:pointer;
  font-family:var(--serif);
  font-size:17px;
  font-weight:700;
  line-height:1.55;
  color:var(--ink-900);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--soy-deep);}
.faq-icon{
  flex:none;
  width:20px;height:20px;
  position:relative;
  margin-top:2px;
  transition:transform .2s cubic-bezier(.2,.7,.2,1);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink-700);
  border-radius:1px;
  transition:background .18s ease;
}
.faq-icon::before{left:0;top:9px;width:20px;height:1.6px;}
.faq-icon::after{left:9px;top:0;width:1.6px;height:20px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-item.is-open .faq-icon::before,
.faq-item.is-open .faq-icon::after{background:var(--soy-deep);}
.faq-item.is-open .faq-q{color:var(--ink-900);}
.faq-a{
  overflow:hidden;
  max-height:0;
  transition:max-height .24s cubic-bezier(.2,.7,.2,1);
}
.faq-a-inner{
  padding:0 40px 22px 4px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-500);
}

/* ---------- CTA ---------- */
.cta-band{
  border-top:1px solid var(--line);
  padding:52px 0;
}
.cta-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px 40px;
  padding:32px 36px;
  background:var(--paper-2);
  border-left:3px solid var(--soy);
  border-radius:0 var(--r-m) var(--r-m) 0;
}
.cta-inner h2{
  font-size:clamp(21px,2.2vw,26px);
  line-height:1.4;
  margin-bottom:6px;
}
.cta-inner p{font-size:14px;color:var(--ink-500);}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 24px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  border-radius:var(--r-m);
  border:1px solid transparent;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn-primary{
  background:var(--soy);
  color:var(--ink-900);
  border-color:var(--soy);
}
.btn-primary:hover{background:var(--soy-deep);border-color:var(--soy-deep);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;
  color:var(--ink-900);
  border-color:var(--ink-900);
}
.btn-ghost:hover{background:var(--ink-900);color:var(--paper);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:auto;
  background:var(--ink-900);
  color:var(--paper);
  padding:64px 0 0;
}
.site-footer .footer-grid{
  display:grid;
  grid-template-columns:1.2fr 1fr 1.1fr 1.1fr;
  gap:40px 32px;
  padding-bottom:48px;
}
.footer-brand{
  display:block;
  font-family:var(--serif);
  font-size:19px;
  font-weight:700;
  line-height:1.45;
  color:var(--paper);
  margin-bottom:16px;
  letter-spacing:-.01em;
}
.footer-brand:hover{color:var(--soy);}
.footer-col h5{
  font-family:var(--sans);
  font-size:13px;
  font-weight:600;
  letter-spacing:.1em;
  color:var(--soy);
  margin:0 0 16px;
}
.footer-col p{
  font-size:13.5px;
  line-height:1.85;
  color:rgba(246,241,231,.72);
}
.footer-col a{
  display:block;
  font-size:14px;
  line-height:1.6;
  color:rgba(246,241,231,.82);
  padding:5px 0;
  transition:color .18s ease;
}
.footer-col a:hover{color:var(--soy);text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  border-top:1px solid rgba(246,241,231,.16);
  padding:20px 0 24px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:12px;
  color:rgba(246,241,231,.6);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:24px;
  bottom:24px;
  width:44px;height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  color:var(--ink-900);
  font-size:16px;
  cursor:pointer;
  z-index:70;
  opacity:0;
  pointer-events:none;
  transition:opacity .22s ease,transform .18s ease,border-color .18s ease,background .18s ease;
}
.to-top.is-visible{opacity:1;pointer-events:auto;}
.to-top:hover{background:var(--paper-2);border-color:var(--ink-900);transform:translateY(-2px);}

/* ---------- 进场动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .24s cubic-bezier(.2,.7,.2,1),transform .24s cubic-bezier(.2,.7,.2,1);
}
.reveal.is-in{opacity:1;transform:none;}

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

/* ---------- 断点 ---------- */
@media (max-width:1199px){
  .behind{gap:40px;}
}
@media (max-width:1023px){
  .mobile-bar{display:flex;}
  .side-nav{
    transform:translateX(-100%);
    width:84vw;
    max-width:340px;
    box-shadow:var(--shadow-2);
  }
  body.nav-open .side-nav{transform:translateX(0);}
  body.nav-open .nav-mask{display:block;opacity:1;}
  .nav-mask{display:block;}
  .page-main{margin-left:0;padding-top:56px;}
  .page-hero{padding:44px 0 36px;}
  .section{padding:56px 0;}
  .log-head{grid-template-columns:84px 1fr 110px;gap:16px;}
  .log-row{grid-template-columns:84px 1fr 110px;gap:16px;}
  .note-grid{grid-template-columns:1fr;border-top:1px solid var(--ink-900);}
  .note-col{
    padding:24px 0;
    border-right:0;
    border-bottom:1px solid var(--line-soft);
  }
  .note-col:not(:first-child){padding-left:0;}
  .note-col:last-child{border-bottom:0;}
  .behind{grid-template-columns:1fr;gap:36px;}
  .behind-figure{padding:0 0 16px 16px;}
  .site-footer .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .top-strip .strip-meta{display:none;}
  .log-head{display:none;}
  .log-row{
    grid-template-columns:1fr;
    gap:8px;
    padding:18px 4px;
  }
  .log-date{display:flex;align-items:center;gap:8px;}
  .log-date span{display:inline;opacity:.7;}
  .log-tag{justify-self:start;margin-top:2px;}
  .log-body strong{font-size:17px;}
  .update-strip{flex-direction:column;align-items:flex-start;gap:8px;}
  .cta-inner{padding:26px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .section-head{flex-direction:column;align-items:flex-start;}
}
@media (max-width:639px){
  .container{padding:0 20px;}
  .page-hero h1{font-size:clamp(28px,8vw,36px);}
  .note-item{flex-direction:column;gap:6px;}
  .note-item .n-date{width:auto;padding-top:0;}
  .site-footer .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding-top:48px;}
  .faq-q{font-size:16px;padding:18px 0;}
  .faq-a-inner{padding-right:8px;}
  .to-top{right:16px;bottom:16px;}
}