/* roulang page: index */
:root{
  --ink:#14120F;
  --pine:#1F3B33;
  --paper:#F6F3EE;
  --paper-2:#EDE8E0;
  --line:#D8D2C7;
  --brass:#A9702B;
  --risk:#B23B2E;
  --text:#1A1714;
  --muted:#5B554C;
  --radius:4px;
  --shadow:0 18px 40px rgba(20,18,15,.08);
  --serif:"Noto Serif SC","Songti SC","STSong",serif;
  --sans:"Noto Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,figcaption{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img,svg{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brass);outline-offset:3px;}
.site-container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}
.serif{font-family:var(--serif);}

/* 顶部公告条 */
.notice-bar{background:var(--ink);color:var(--paper);font-size:13px;letter-spacing:.02em;}
.notice-bar__inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:38px;}
.notice-bar__text{color:rgba(246,243,238,.8);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0;}
.notice-bar .chip{flex:none;}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:80;background:rgba(246,243,238,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);transition:box-shadow .22s ease;}
.site-header.is-stuck{box-shadow:0 12px 26px rgba(20,18,15,.07);}
.nav-row{display:flex;align-items:center;gap:24px;min-height:74px;}
.brand{display:flex;flex-direction:column;line-height:1.2;flex:none;}
.brand__mark{font-family:var(--serif);font-weight:900;font-size:22px;letter-spacing:.02em;color:var(--ink);}
.brand__sub{font-size:11.5px;letter-spacing:.14em;color:var(--muted);margin-top:4px;}
.nav-list{display:flex;align-items:center;gap:2px;margin-left:auto;flex-wrap:wrap;}
.nav-link{display:inline-flex;align-items:center;min-height:44px;padding:0 13px;font-size:15px;color:var(--text);border-radius:2px;position:relative;transition:color .2s ease,background-color .2s ease;}
.nav-link::after{content:"";position:absolute;left:13px;right:13px;bottom:9px;height:1px;background:var(--brass);transform:scaleX(0);transform-origin:left;transition:transform .22s cubic-bezier(.2,.7,.2,1);}
.nav-link:hover{color:var(--brass);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brass);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none;}
.nav-toggle{display:none;width:46px;height:46px;border:1px solid var(--line);border-radius:3px;background:transparent;align-items:center;justify-content:center;cursor:pointer;}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 抽屉 */
.nav-drawer{position:fixed;inset:0;z-index:120;background:var(--paper);transform:translateX(100%);transition:transform .3s cubic-bezier(.2,.7,.2,1);display:flex;flex-direction:column;padding:22px 22px 30px;overflow-y:auto;}
.nav-drawer.is-open{transform:translateX(0);}
.nav-drawer__head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line);}
.nav-drawer__close{width:44px;height:44px;border:1px solid var(--line);border-radius:3px;background:transparent;font-size:20px;line-height:1;color:var(--ink);cursor:pointer;}
.nav-drawer__list{display:flex;flex-direction:column;margin-top:10px;}
.nav-drawer__list a{display:flex;align-items:center;min-height:52px;font-size:18px;border-bottom:1px solid var(--line);}
.nav-drawer__foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px;}

/* 通用组件 */
.chip{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:999px;border:1px solid var(--line);font-size:12.5px;letter-spacing:.06em;color:var(--muted);background:transparent;transition:all .2s ease;}
.chip--brass{border-color:var(--brass);color:var(--brass);}
.chip--brass:hover{background:var(--brass);color:var(--paper);border-color:var(--brass);}
.chip--solid{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 26px;border-radius:2px;font-size:15px;font-weight:500;letter-spacing:.02em;border:1px solid transparent;cursor:pointer;transition:background-color .22s cubic-bezier(.2,.7,.2,1),color .22s cubic-bezier(.2,.7,.2,1),border-color .22s ease,transform .12s ease;}
.btn:active{transform:translateY(1px);}
.btn--primary{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.btn--primary:hover{background:var(--brass);border-color:var(--brass);color:var(--paper);}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn--ghost:hover{background:var(--ink);color:var(--paper);}
.btn--light{background:transparent;color:var(--paper);border-color:rgba(246,243,238,.6);}
.btn--light:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink);position:relative;padding-bottom:3px;}
.link-arrow::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--brass);transform:scaleX(0);transform-origin:left;transition:transform .25s cubic-bezier(.2,.7,.2,1);}
.link-arrow:hover{color:var(--brass);}
.link-arrow:hover::after{transform:scaleX(1);}
.link-arrow span{transition:transform .22s ease;}
.link-arrow:hover span{transform:translateX(3px);}

/* 板块 */
.section{padding:88px 0;border-top:1px solid var(--line);}
.section--paper2{background:var(--paper-2);}
.section--ink{background:var(--ink);color:var(--paper);border-top-color:rgba(246,243,238,.14);}
.section--pine{background:var(--pine);color:var(--paper);border-top-color:rgba(246,243,238,.14);}
.section--ink .section__desc,.section--pine .section__desc{color:rgba(246,243,238,.72);}
.section__head{position:relative;max-width:820px;margin-bottom:44px;}
.section__num{display:block;font-family:var(--serif);font-size:52px;line-height:1;font-weight:900;color:transparent;-webkit-text-stroke:1px rgba(20,18,15,.35);margin-bottom:14px;}
.section--ink .section__num,.section--pine .section__num{-webkit-text-stroke:1px rgba(246,243,238,.42);}
.section__title{font-family:var(--serif);font-weight:700;font-size:clamp(1.55rem,3vw,2.3rem);line-height:1.25;letter-spacing:-.01em;}
.section__desc{margin-top:14px;color:var(--muted);max-width:68ch;}
.section__rule{width:64px;height:1px;background:var(--brass);margin-top:20px;}

/* Hero */
.hero{padding:64px 0 72px;background:var(--paper);}
.hero__grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:start;}
.hero__title{font-family:var(--serif);font-weight:900;font-size:clamp(2.05rem,4.4vw,3.5rem);line-height:1.16;letter-spacing:-.01em;margin-top:20px;}
.hero__title .accent{color:var(--pine);}
.hero__lead{margin-top:22px;color:var(--muted);max-width:60ch;}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero__stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:38px;padding-top:26px;border-top:1px solid var(--line);}
.hero__stats li{min-width:0;}
.stat-num{display:block;font-family:var(--serif);font-size:32px;font-weight:900;line-height:1;color:var(--pine);}
.stat-label{display:block;margin-top:8px;font-size:13px;color:var(--muted);letter-spacing:.04em;}
.hero__aside{position:relative;min-width:0;}
.hero__figure{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--paper-2);}
.hero__figure figcaption{font-size:12.5px;color:var(--muted);padding:10px 14px;border-top:1px solid var(--line);letter-spacing:.03em;background:var(--paper);}
.hero__card{margin-top:16px;background:var(--pine);color:var(--paper);border-radius:var(--radius);padding:16px 18px;}
.hero__card-title{font-size:13px;letter-spacing:.12em;color:rgba(246,243,238,.72);margin-bottom:6px;}
.hero__card p{font-size:14px;line-height:1.75;}
.hero__index{display:flex;flex-wrap:wrap;gap:22px;margin-top:18px;font-size:14px;}
.hero__index a{color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:2px;transition:color .2s ease,border-color .2s ease;}
.hero__index a:hover{color:var(--brass);border-color:var(--brass);}

/* 关键词索引条 */
.keyline{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:20px 0;}
.keyline__inner{display:flex;flex-wrap:wrap;align-items:center;gap:10px 26px;}
.keyline__label{font-size:12.5px;letter-spacing:.14em;color:var(--muted);}
.keyline a{font-size:14px;color:var(--ink);padding:4px 0;border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease;}
.keyline a:hover{color:var(--brass);border-color:var(--brass);}

/* 三柱 */
.pillar-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,4fr) minmax(0,3fr);gap:24px;align-items:start;}
.pillar{border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;background:var(--paper);transition:transform .22s cubic-bezier(.2,.7,.2,1),border-color .22s ease,box-shadow .22s ease;}
.pillar:hover{transform:translateY(-3px);border-color:#BFB7A8;box-shadow:var(--shadow);}
.pillar:nth-child(2){margin-top:26px;}
.pillar:nth-child(3){margin-top:52px;}
.pillar__num{font-family:var(--serif);font-size:34px;font-weight:900;line-height:1;color:transparent;-webkit-text-stroke:1px rgba(169,112,43,.7);}
.pillar h3{font-family:var(--serif);font-size:1.18rem;font-weight:700;margin-top:16px;line-height:1.4;}
.pillar p{margin-top:10px;font-size:14.5px;color:var(--muted);}
.pillar .link-arrow{margin-top:16px;}

/* 策略卡片 */
.module-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.module-card{display:flex;flex-direction:column;min-width:0;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);padding:24px 22px;transition:transform .22s cubic-bezier(.2,.7,.2,1),border-color .22s ease,box-shadow .22s ease;}
.module-card:hover{transform:translateY(-3px);border-color:#BFB7A8;box-shadow:var(--shadow);}
.module-card--wide{grid-column:span 2;background:var(--paper-2);}
.module-card__icon{width:42px;height:42px;border:1px solid var(--line);border-radius:3px;display:flex;align-items:center;justify-content:center;color:var(--pine);margin-bottom:16px;background:var(--paper);}
.module-card h3{font-family:var(--serif);font-size:1.14rem;font-weight:700;line-height:1.4;}
.module-card p{margin-top:10px;font-size:14.5px;color:var(--muted);flex:1;}
.module-card__tag{margin-top:16px;font-size:12px;letter-spacing:.1em;color:var(--brass);}

/* 杠杆区 */
.lever-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:44px;align-items:start;}
.lever-lead{font-size:15.5px;color:rgba(246,243,238,.8);}
.lever-lead strong{color:var(--paper);font-weight:500;}
.lever-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 28px;}
.lever-item{min-width:0;border-left:1px solid rgba(246,243,238,.3);padding-left:16px;}
.lever-item h3{font-family:var(--serif);font-size:1.05rem;font-weight:700;}
.lever-item p{font-size:14px;color:rgba(246,243,238,.72);margin-top:6px;}
.rule-table{margin-top:34px;border:1px solid rgba(246,243,238,.22);border-radius:var(--radius);overflow:hidden;}
.rule-table__scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
.rule-table table{width:100%;min-width:640px;border-collapse:collapse;font-size:14px;}
.rule-table thead th{background:rgba(20,18,15,.35);color:var(--paper);text-align:left;font-weight:500;letter-spacing:.06em;padding:13px 16px;font-size:13px;}
.rule-table tbody td{padding:13px 16px;border-top:1px solid rgba(246,243,238,.16);color:rgba(246,243,238,.84);vertical-align:top;}
.rule-table tbody td:first-child{color:var(--paper);font-weight:500;white-space:nowrap;}
.rule-table__hint{font-size:12.5px;color:rgba(246,243,238,.6);padding:10px 16px;border-top:1px solid rgba(246,243,238,.16);}

/* 场景 */
.scene{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:40px;align-items:center;padding:32px 0;border-top:1px solid var(--line);}
.scene:first-of-type{border-top:none;padding-top:0;}
.scene:nth-child(even){grid-template-columns:minmax(0,7fr) minmax(0,5fr);}
.scene:nth-child(even) .scene__media{order:2;}
.scene__media{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--paper-2);}
.scene__body{min-width:0;}
.scene__index{font-family:var(--serif);font-size:13px;letter-spacing:.18em;color:var(--brass);}
.scene h3{font-family:var(--serif);font-size:1.35rem;font-weight:700;line-height:1.4;margin-top:10px;}
.scene p{margin-top:10px;color:var(--muted);font-size:15px;max-width:62ch;}
.scene .link-arrow{margin-top:14px;}

/* 演示区 */
.demo-grid{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:44px;align-items:start;}
.demo-shot{border:1px solid rgba(246,243,238,.24);border-radius:var(--radius);overflow:hidden;background:#1B1815;}
.demo-points{display:flex;flex-direction:column;gap:22px;}
.demo-point{display:grid;grid-template-columns:38px minmax(0,1fr);gap:14px;min-width:0;}
.demo-point__num{font-family:var(--serif);font-size:14px;letter-spacing:.08em;color:var(--brass);padding-top:3px;}
.demo-point h3{font-size:1.05rem;font-family:var(--serif);font-weight:700;}
.demo-point p{font-size:14px;color:rgba(246,243,238,.72);margin-top:6px;}
.demo-phone{width:150px;margin:-18px 0 24px auto;border:1px solid rgba(246,243,238,.28);border-radius:14px;overflow:hidden;background:#1B1815;}
.demo-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;padding-top:26px;border-top:1px solid rgba(246,243,238,.18);}
.demo-tags .chip{color:rgba(246,243,238,.78);border-color:rgba(246,243,238,.3);}

/* 复盘 */
.review-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:44px;align-items:start;}
.timeline{position:relative;padding-left:26px;}
.timeline::before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;background:var(--line);}
.timeline__item{position:relative;padding-bottom:26px;}
.timeline__item:last-child{padding-bottom:0;}
.timeline__item::before{content:"";position:absolute;left:-25px;top:9px;width:9px;height:9px;border-radius:50%;background:var(--paper);border:1px solid var(--brass);}
.timeline__item h3{font-family:var(--serif);font-size:1.08rem;font-weight:700;}
.timeline__item p{font-size:14.5px;color:var(--muted);margin-top:6px;}
.sample-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);overflow:hidden;}
.sample-card__media{border-bottom:1px solid var(--line);background:var(--paper-2);}
.sample-card__body{padding:22px 24px;}
.sample-card__body h3{font-family:var(--serif);font-size:1.12rem;font-weight:700;}
.sample-card__body p{font-size:14.5px;color:var(--muted);margin-top:8px;}
.sample-card__meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;}

/* 方案对照 */
.plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.plan-card{min-width:0;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);padding:26px 24px;display:flex;flex-direction:column;transition:transform .22s cubic-bezier(.2,.7,.2,1),border-color .22s ease,box-shadow .22s ease;}
.plan-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);}
.plan-card--featured{background:var(--pine);color:var(--paper);border-color:var(--pine);}
.plan-card--featured .plan-card__desc,.plan-card--featured .plan-list li{color:rgba(246,243,238,.78);}
.plan-card__name{font-family:var(--serif);font-size:1.25rem;font-weight:700;}
.plan-card__desc{font-size:14px;color:var(--muted);margin-top:8px;}
.plan-card__price{font-family:var(--serif);font-size:28px;font-weight:900;margin-top:18px;line-height:1;}
.plan-card__price span{font-family:var(--sans);font-size:12.5px;font-weight:400;color:var(--muted);margin-left:8px;letter-spacing:.06em;}
.plan-card--featured .plan-card__price span{color:rgba(246,243,238,.7);}
.plan-list{margin-top:20px;display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--muted);flex:1;}
.plan-list li{display:grid;grid-template-columns:14px minmax(0,1fr);gap:10px;min-width:0;}
.plan-list li::before{content:"—";color:var(--brass);font-size:13px;line-height:1.6;}

/* 主题墙 */
.topic-wall{columns:3;column-gap:18px;}
.topic-card{break-inside:avoid;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);padding:18px 20px;margin-bottom:18px;transition:border-color .2s ease,transform .2s ease;}
.topic-card:hover{border-color:#BFB7A8;transform:translateY(-2px);}
.topic-card p{font-size:15px;line-height:1.65;}
.topic-card span{display:inline-block;margin-top:10px;font-size:12px;letter-spacing:.1em;color:var(--brass);}

/* 学习路径 */
.path{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--line);}
.path__step{min-width:0;padding:26px 22px 0 0;position:relative;}
.path__step:not(:last-child)::after{content:"→";position:absolute;right:14px;top:26px;color:var(--brass);font-size:14px;}
.path__num{font-family:var(--serif);font-size:13px;letter-spacing:.16em;color:var(--brass);}
.path__step h3{font-family:var(--serif);font-size:1.06rem;font-weight:700;margin-top:10px;}
.path__step p{font-size:14px;color:var(--muted);margin-top:8px;}

/* FAQ */
.faq{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq__item{border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);border-left:2px solid transparent;transition:border-left-color .2s ease,background-color .2s ease;}
.faq__item[open]{border-left-color:var(--brass);background:var(--paper-2);}
.faq__item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 22px;font-size:15.5px;font-weight:500;min-height:56px;}
.faq__item summary::-webkit-details-marker{display:none;}
.faq__item summary::after{content:"+";font-size:18px;color:var(--brass);line-height:1;flex:none;transition:transform .22s ease;}
.faq__item[open] summary::after{content:"−";}
.faq__item p{padding:0 22px 20px;font-size:14.5px;color:var(--muted);max-width:70ch;}

/* CMS 资讯 */
.cms-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:36px;}
.cms-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.cms-card{min-width:0;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);display:flex;flex-direction:column;transition:transform .22s cubic-bezier(.2,.7,.2,1),border-color .22s ease,box-shadow .22s ease;position:relative;overflow:hidden;}
.cms-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brass);transform:scaleY(0);transform-origin:top;transition:transform .25s cubic-bezier(.2,.7,.2,1);}
.cms-card:hover{transform:translateY(-3px);border-color:#BFB7A8;box-shadow:var(--shadow);}
.cms-card:hover::before{transform:scaleY(1);}
.cms-card__link{display:flex;flex-direction:column;height:100%;padding:24px 22px;}
.cms-card__meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);}
.cms-card__cat{border:1px solid var(--line);border-radius:999px;padding:2px 10px;font-size:12px;color:var(--pine);letter-spacing:.04em;}
.cms-card h3{font-family:var(--serif);font-size:1.06rem;font-weight:700;line-height:1.5;margin-top:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-card p{margin-top:10px;font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1;}
.cms-card__more{margin-top:16px;font-size:13.5px;color:var(--brass);letter-spacing:.04em;}
.cms-empty{border:1px dashed var(--line);border-radius:var(--radius);padding:36px 24px;text-align:center;background:var(--paper);}
.cms-empty p{color:var(--muted);font-size:14.5px;}
.cms-empty .btn{margin-top:18px;}

/* 下载 */
.download-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.dl-card{min-width:0;border:1px solid rgba(246,243,238,.26);border-radius:var(--radius);padding:28px 24px;display:flex;flex-direction:column;gap:14px;transition:border-color .22s ease,background-color .22s ease,transform .22s cubic-bezier(.2,.7,.2,1);}
.dl-card:hover{border-color:rgba(246,243,238,.6);background:rgba(246,243,238,.05);transform:translateY(-3px);}
.dl-card__icon{width:46px;height:46px;border:1px solid rgba(246,243,238,.4);border-radius:3px;display:flex;align-items:center;justify-content:center;color:var(--paper);}
.dl-card h3{font-family:var(--serif);font-size:1.15rem;font-weight:700;}
.dl-card p{font-size:14px;color:rgba(246,243,238,.72);flex:1;}
.dl-card .btn{width:100%;}
.dl-note{margin-top:24px;font-size:13px;color:rgba(246,243,238,.6);}

/* CTA 与风险 */
.cta-band{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:40px;align-items:center;}
.cta-band h2{font-family:var(--serif);font-size:clamp(1.6rem,3vw,2.3rem);line-height:1.3;font-weight:700;}
.cta-band p{margin-top:14px;color:var(--muted);max-width:60ch;}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:flex-start;}
.risk-note{margin-top:44px;padding-top:22px;border-top:1px solid var(--line);display:grid;grid-template-columns:3px minmax(0,1fr);gap:16px;}
.risk-note::before{content:"";background:var(--risk);}
.risk-note p{font-size:13px;color:var(--muted);line-height:1.8;}

/* 页脚 */
.site-footer{background:var(--ink);color:var(--paper);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:36px;padding-bottom:44px;}
.footer-col h3{font-size:13px;letter-spacing:.14em;color:rgba(246,243,238,.62);font-weight:500;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(246,243,238,.86);transition:color .2s ease;}
.footer-col a:hover{color:var(--brass);}
.footer-col p{font-size:13.5px;color:rgba(246,243,238,.66);line-height:1.8;}
.footer-bottom{border-top:1px solid rgba(246,243,238,.14);padding:22px 0 30px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;}
.footer-brand{display:flex;flex-direction:column;line-height:1.3;}
.footer-brand strong{font-family:var(--serif);font-size:17px;font-weight:900;}
.footer-brand span{font-size:12px;letter-spacing:.12em;color:rgba(246,243,238,.6);margin-top:4px;}
.footer-meta{font-size:12.5px;color:rgba(246,243,238,.55);}

/* 动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s cubic-bezier(.2,.7,.2,1),transform .6s cubic-bezier(.2,.7,.2,1);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation:none!important;transition:none!important;}
}

/* 响应式 */
@media (max-width:1199px){
  .site-container{padding:0 28px;}
  .hero__grid{grid-template-columns:minmax(0,1fr);gap:36px;}
  .hero__aside{max-width:620px;}
  .pillar-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .pillar:nth-child(3){margin-top:0;grid-column:span 2;}
  .module-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .module-card--wide{grid-column:span 2;}
  .lever-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .demo-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .review-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .scene,.scene:nth-child(even){grid-template-columns:minmax(0,1fr);gap:22px;}
  .scene:nth-child(even) .scene__media{order:0;}
  .cta-band{grid-template-columns:minmax(0,1fr);gap:26px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .topic-wall{columns:2;}
  .path{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px;}
  .path__step:not(:last-child)::after{display:none;}
}
@media (max-width:991px){
  .nav-list{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .chip{display:none;}
  .nav-row{min-height:66px;}
  .section{padding:64px 0;}
  .hero{padding:44px 0 52px;}
  .cms-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .download-grid{grid-template-columns:minmax(0,1fr);}
  .plan-grid{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:767px){
  .site-container{padding:0 18px;}
  body{font-size:16px;}
  .notice-bar__text{max-width:62%;}
  .section{padding:52px 0;}
  .section__num{font-size:40px;}
  .hero__stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;}
  .stat-num{font-size:26px;}
  .pillar-grid{grid-template-columns:minmax(0,1fr);}
  .pillar:nth-child(3){grid-column:span 1;}
  .pillar:nth-child(2),.pillar:nth-child(3){margin-top:0;}
  .module-grid{grid-template-columns:minmax(0,1fr);}
  .module-card--wide{grid-column:span 1;}
  .lever-list{grid-template-columns:minmax(0,1fr);}
  .cms-grid{grid-template-columns:minmax(0,1fr);}
  .topic-wall{columns:1;}
  .path{grid-template-columns:minmax(0,1fr);}
  .path__step{padding:22px 0;border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .demo-phone{width:132px;margin:0 0 22px;}
  .cms-head{align-items:flex-start;}
}
@media (max-width:520px){
  .hero__title{font-size:1.85rem;}
  .hero__stats{grid-template-columns:minmax(0,1fr);gap:14px;}
  .hero__stats li{display:flex;align-items:baseline;gap:12px;}
  .stat-num{font-size:24px;}
  .stat-label{margin-top:0;}
  .btn{width:100%;}
  .hero__actions{flex-direction:column;align-items:stretch;}
  .cta-actions{width:100%;}
  .faq__item summary{padding:16px 18px;font-size:15px;}
  .faq__item p{padding:0 18px 18px;}
}

/* roulang page: article */
:root{
  --ink:#14120F;
  --pine:#1F3B33;
  --paper:#F6F3EE;
  --paper-2:#EDE8E0;
  --line:#D8D2C7;
  --brass:#A9702B;
  --risk:#B23B2E;
  --text:#1A1714;
  --muted:#5B554C;
  --radius:4px;
  --shadow:0 18px 40px rgba(20,18,15,.08);
  --serif:"Noto Serif SC","Songti SC","STSong",serif;
  --sans:"Noto Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure{margin:0;}
.site-container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}
/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:80;background:rgba(246,243,238,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);transition:box-shadow .22s ease;}
.site-header.is-stuck{box-shadow:0 12px 26px rgba(20,18,15,.07);}
.nav-row{display:flex;align-items:center;gap:24px;min-height:74px;}
.brand{display:flex;flex-direction:column;line-height:1.2;flex:none;}
.brand__mark{font-family:var(--serif);font-weight:900;font-size:22px;letter-spacing:.02em;color:var(--ink);}
.brand__sub{font-size:11.5px;letter-spacing:.14em;color:var(--muted);margin-top:4px;}
.nav-list{display:flex;align-items:center;gap:2px;margin-left:auto;flex-wrap:wrap;}
.nav-link{display:inline-flex;align-items:center;min-height:44px;padding:0 13px;font-size:15px;color:var(--text);border-radius:2px;position:relative;transition:color .2s ease,background-color .2s ease;}
.nav-link::after{content:"";position:absolute;left:13px;right:13px;bottom:9px;height:1px;background:var(--brass);transform:scaleX(0);transform-origin:left;transition:transform .22s cubic-bezier(.2,.7,.2,1);}
.nav-link:hover{color:var(--brass);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brass);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none;}
.nav-toggle{display:none;width:46px;height:46px;border:1px solid var(--line);border-radius:3px;background:transparent;align-items:center;justify-content:center;cursor:pointer;}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
/* 抽屉 */
.nav-drawer{position:fixed;inset:0;z-index:120;background:var(--paper);transform:translateX(100%);transition:transform .3s cubic-bezier(.2,.7,.2,1);display:flex;flex-direction:column;padding:22px 22px 30px;overflow-y:auto;visibility:hidden;}
.nav-drawer.is-open{transform:translateX(0);visibility:visible;}
.nav-drawer__head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line);}
.nav-drawer__close{width:44px;height:44px;border:1px solid var(--line);border-radius:3px;background:transparent;font-size:20px;line-height:1;color:var(--ink);cursor:pointer;}
.nav-drawer__list{display:flex;flex-direction:column;margin-top:10px;}
.nav-drawer__list a{display:flex;align-items:center;min-height:52px;font-size:18px;border-bottom:1px solid var(--line);}
.nav-drawer__list a:hover{color:var(--brass);}
.nav-drawer__foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px;}
/* ============ 通用组件 ============ */
.chip{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:999px;border:1px solid var(--line);font-size:12.5px;letter-spacing:.06em;color:var(--muted);background:transparent;transition:all .2s ease;}
.chip--brass{border-color:var(--brass);color:var(--brass);}
.chip--brass:hover{background:var(--brass);color:var(--paper);border-color:var(--brass);}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 26px;border-radius:2px;font-size:15px;font-weight:500;letter-spacing:.02em;border:1px solid transparent;cursor:pointer;transition:background-color .22s cubic-bezier(.2,.7,.2,1),color .22s cubic-bezier(.2,.7,.2,1),border-color .22s ease,transform .12s ease;}
.btn:active{transform:translateY(1px);}
.btn:focus-visible,.nav-link:focus-visible,.chip:focus-visible,a:focus-visible{outline:2px solid var(--brass);outline-offset:3px;}
.btn--primary{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.btn--primary:hover{background:var(--brass);border-color:var(--brass);color:var(--paper);}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn--ghost:hover{background:var(--ink);color:var(--paper);}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink);position:relative;padding-bottom:3px;}
.link-arrow::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--brass);transform:scaleX(0);transform-origin:left;transition:transform .25s cubic-bezier(.2,.7,.2,1);}
.link-arrow:hover{color:var(--brass);}
.link-arrow:hover::after{transform:scaleX(1);}
.link-arrow span{transition:transform .22s ease;}
.link-arrow:hover span{transform:translateX(3px);}
/* ============ 面包屑 ============ */
.crumb-bar{border-bottom:1px solid var(--line);background:var(--paper);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:15px 0;font-size:13px;letter-spacing:.02em;color:var(--muted);}
.crumb a{color:var(--muted);transition:color .2s ease;}
.crumb a:hover{color:var(--brass);}
.crumb .sep{color:#B5AEA2;}
.crumb .cur{color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:60%;}
/* ============ 文章头部 ============ */
.article-head{padding:52px 0 34px;background:var(--paper);}
.article-head__inner{max-width:920px;min-width:0;}
.article-title{font-family:var(--serif);font-weight:700;font-size:clamp(1.8rem,3.4vw,2.85rem);line-height:1.24;letter-spacing:-.01em;margin:18px 0 0;word-break:break-word;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:20px;font-size:13px;color:var(--muted);letter-spacing:.02em;}
.article-meta .dot{width:3px;height:3px;background:var(--line);border-radius:50%;}
.article-rule{width:64px;height:1px;background:var(--brass);margin-top:26px;}
/* ============ 正文布局 ============ */
.article-wrap{padding:8px 0 88px;background:var(--paper);}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 316px;gap:56px;align-items:start;}
.article-main{min-width:0;}
.article-body{font-size:16.5px;line-height:1.9;color:var(--text);min-width:0;word-break:break-word;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.25em;}
.article-body h2{font-family:var(--serif);font-weight:700;font-size:1.42rem;line-height:1.4;letter-spacing:-.005em;margin:2.1em 0 .75em;padding-left:14px;border-left:3px solid var(--brass);scroll-margin-top:104px;}
.article-body h3{font-weight:700;font-size:1.1rem;line-height:1.5;margin:1.7em 0 .6em;}
.article-body h4{font-weight:700;font-size:1rem;margin:1.4em 0 .5em;}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.3em;}
.article-body ul{list-style:none;padding-left:0;}
.article-body ul > li{position:relative;padding-left:18px;margin-bottom:.55em;}
.article-body ul > li::before{content:"";position:absolute;left:0;top:.85em;width:8px;height:1px;background:var(--brass);}
.article-body ol > li{margin-bottom:.55em;}
.article-body blockquote{margin:1.6em 0;padding:14px 22px;border-left:2px solid var(--brass);background:var(--paper-2);color:var(--text);font-size:15.5px;}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body a{color:var(--brass);border-bottom:1px solid rgba(169,112,43,.45);transition:background-color .2s ease;}
.article-body a:hover{background:rgba(169,112,43,.1);}
.article-body strong{font-weight:700;color:var(--ink);}
.article-body img{height:auto;border-radius:var(--radius);border:1px solid var(--line);margin:1.4em 0;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--muted);margin-top:8px;}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;border:1px solid var(--line);}
.article-body th{background:var(--pine);color:var(--paper);font-weight:500;text-align:left;padding:11px 14px;border-right:1px solid rgba(246,243,238,.18);}
.article-body th:last-child{border-right:0;}
.article-body td{padding:11px 14px;border-bottom:1px solid var(--line);border-right:1px solid var(--line);vertical-align:top;}
.article-body td:last-child{border-right:0;}
.article-body tr:last-child td{border-bottom:0;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}
.article-body--empty{padding:26px 0 10px;}
.article-body--empty h2{border-left:3px solid var(--risk);}
.article-body--empty .btn{margin-top:6px;}
/* 侧栏 */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px;min-width:0;}
.side-card{border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;background:var(--paper);min-width:0;}
.side-card__title{font-size:12.5px;letter-spacing:.14em;color:var(--muted);font-weight:500;margin-bottom:14px;}
.toc-list{display:flex;flex-direction:column;}
.toc-list a{display:block;font-size:14px;line-height:1.6;padding:7px 0 7px 12px;border-left:1px solid var(--line);color:var(--muted);transition:color .2s ease,border-color .2s ease;margin-bottom:2px;word-break:break-word;}
.toc-list a:hover,.toc-list a.is-current{color:var(--brass);border-left-color:var(--brass);}
.dl-mini{display:flex;flex-direction:column;gap:8px;}
.dl-mini a{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:44px;padding:0 14px;border:1px solid var(--ink);border-radius:2px;font-size:14px;color:var(--ink);transition:background-color .2s ease,color .2s ease;}
.dl-mini a:hover{background:var(--ink);color:var(--paper);}
.dl-mini a span{font-size:12px;color:var(--muted);transition:color .2s ease;}
.dl-mini a:hover span{color:rgba(246,243,238,.7);}
.side-note{font-size:12.5px;line-height:1.8;color:var(--muted);margin-top:12px;}
.risk-note{border-left:2px solid var(--risk);padding-left:14px;font-size:13px;line-height:1.8;color:var(--muted);}
/* ============ 关键要点 ============ */
.keypoints{margin-top:46px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper-2);padding:28px 30px;}
.keypoints__head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;}
.keypoints__num{font-family:var(--serif);font-weight:900;font-size:30px;line-height:1;color:transparent;-webkit-text-stroke:1px rgba(20,18,15,.35);}
.keypoints__title{font-family:var(--serif);font-weight:700;font-size:1.15rem;}
.keypoints__list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 30px;margin-top:20px;}
.keypoint{display:flex;gap:12px;font-size:14.5px;line-height:1.75;min-width:0;}
.keypoint b{font-family:var(--serif);font-weight:700;color:var(--brass);flex:none;}
/* 尾部导航 */
.article-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;margin-top:42px;padding-top:22px;border-top:1px solid var(--line);font-size:14px;}
.article-foot .back{display:inline-flex;align-items:center;gap:8px;color:var(--muted);transition:color .2s ease;}
.article-foot .back:hover{color:var(--brass);}
/* 风险声明 */
.risk-block{margin-top:36px;padding:24px 0 0;border-top:1px solid var(--line);display:flex;gap:16px;}
.risk-block__bar{flex:none;width:2px;background:var(--risk);border-radius:2px;}
.risk-block p{font-size:13px;line-height:1.85;color:var(--muted);margin:0;}
/* ============ 相关解析 ============ */
.section{padding:88px 0;border-top:1px solid var(--line);}
.section--paper2{background:var(--paper-2);}
.section__head{position:relative;max-width:820px;margin-bottom:40px;}
.section__num{display:block;font-family:var(--serif);font-size:48px;line-height:1;font-weight:900;color:transparent;-webkit-text-stroke:1px rgba(20,18,15,.35);margin-bottom:12px;}
.section__title{font-family:var(--serif);font-weight:700;font-size:clamp(1.5rem,2.8vw,2.1rem);line-height:1.28;letter-spacing:-.01em;}
.section__desc{margin-top:14px;color:var(--muted);max-width:68ch;font-size:15.5px;}
.section__rule{width:64px;height:1px;background:var(--brass);margin-top:20px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{display:flex;flex-direction:column;min-width:0;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);padding:26px 24px;transition:transform .22s cubic-bezier(.2,.7,.2,1),box-shadow .22s ease,border-color .22s ease;}
.rel-card:hover{transform:translateY(-3px);border-color:#BFB7A9;box-shadow:var(--shadow);}
.rel-card__tag{font-size:12px;letter-spacing:.1em;color:var(--brass);margin-bottom:12px;}
.rel-card__title{font-family:var(--serif);font-weight:700;font-size:1.08rem;line-height:1.45;margin-bottom:10px;word-break:break-word;}
.rel-card__desc{font-size:14px;line-height:1.8;color:var(--muted);margin-bottom:18px;}
.rel-card__link{margin-top:auto;font-size:14px;color:var(--ink);display:inline-flex;align-items:center;gap:8px;}
.rel-card:hover .rel-card__link{color:var(--brass);}
/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:var(--paper);padding:62px 0 0;border-top:1px solid rgba(246,243,238,.14);}
.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:36px;}
.footer-col{min-width:0;}
.footer-col h3{font-family:var(--serif);font-size:15px;font-weight:700;letter-spacing:.06em;color:var(--paper);margin:0 0 16px;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a,.footer-col p{font-size:14px;line-height:1.85;color:rgba(246,243,238,.72);}
.footer-col a{transition:color .2s ease;}
.footer-col a:hover{color:var(--brass);}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;margin-top:46px;padding:22px 0;border-top:1px solid rgba(246,243,238,.14);}
.footer-brand{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;}
.footer-brand strong{font-family:var(--serif);font-size:18px;letter-spacing:.02em;}
.footer-brand span{font-size:12.5px;letter-spacing:.12em;color:rgba(246,243,238,.6);}
.footer-meta{font-size:13px;color:rgba(246,243,238,.55);margin:0;}
/* ============ 动效 ============ */
.reveal{opacity:1;transform:none;}
.js-ready .reveal{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s cubic-bezier(.2,.7,.2,1);}
.js-ready .reveal.is-in{opacity:1;transform:none;}
/* ============ 响应式 ============ */
@media (max-width:1199px){
  .site-container{padding:0 32px;}
  .nav-link{padding:0 10px;font-size:14.5px;}
  .article-layout{grid-template-columns:minmax(0,1fr) 288px;gap:40px;}
}
@media (max-width:1023px){
  .site-container{padding:0 28px;}
  .nav-list{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .chip,.nav-actions .btn{display:none;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:38px;}
  .article-side{position:static;top:auto;}
  .section{padding:64px 0;}
  .article-wrap{padding-bottom:64px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;}
}
@media (max-width:767px){
  .site-container{padding:0 18px;}
  body{font-size:16px;}
  .brand__sub{display:none;}
  .nav-row{min-height:66px;}
  .article-head{padding:36px 0 26px;}
  .article-title{margin-top:14px;}
  .crumb .cur{max-width:100%;white-space:normal;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:1.28rem;margin-top:1.9em;}
  .article-body table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;}
  .article-body th,.article-body td{white-space:nowrap;}
  .keypoints{padding:22px 18px;}
  .keypoints__list{grid-template-columns:minmax(0,1fr);}
  .section{padding:52px 0;}
  .section__num{font-size:38px;}
  .rel-grid{grid-template-columns:minmax(0,1fr);gap:16px;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:480px){
  .article-title{font-size:1.62rem;}
  .article-meta{font-size:12.5px;gap:8px 14px;}
  .side-card{padding:18px 16px;}
  .rel-card{padding:22px 18px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .js-ready .reveal{opacity:1;transform:none;transition:none;}
  .btn,.rel-card,.nav-link,.link-arrow::after{transition:none;}
}

/* roulang page: category1 */
:root{
  --ink:#14120F;
  --pine:#1F3B33;
  --paper:#F6F3EE;
  --paper-2:#EDE8E0;
  --line:#D8D2C7;
  --brass:#A9702B;
  --risk:#B23B2E;
  --text:#1A1714;
  --muted:#5B554C;
  --radius:4px;
  --shadow:0 18px 40px rgba(20,18,15,.08);
  --serif:"Noto Serif SC","Songti SC","STSong",serif;
  --sans:"Noto Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul{padding:0;list-style:none;}
.site-container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}
:focus-visible{outline:2px solid var(--brass);outline-offset:3px;}

/* 公告条 */
.notice-bar{background:var(--ink);color:var(--paper);}
.notice-row{display:flex;align-items:center;gap:16px;min-height:36px;padding-top:6px;padding-bottom:6px;}
.notice-dot{width:6px;height:6px;border-radius:50%;background:var(--brass);flex:none;}
.notice-text{font-size:13px;letter-spacing:.02em;color:rgba(246,243,238,.82);margin:0;flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.notice-bar .chip{flex:none;}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:80;background:rgba(246,243,238,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);transition:box-shadow .22s ease;}
.site-header.is-stuck{box-shadow:0 12px 26px rgba(20,18,15,.07);}
.nav-row{display:flex;align-items:center;gap:24px;min-height:74px;}
.brand{display:flex;flex-direction:column;line-height:1.2;flex:none;}
.brand__mark{font-family:var(--serif);font-weight:900;font-size:22px;letter-spacing:.02em;color:var(--ink);}
.brand__sub{font-size:11.5px;letter-spacing:.14em;color:var(--muted);margin-top:4px;}
.nav-list{display:flex;align-items:center;gap:2px;margin-left:auto;flex-wrap:wrap;}
.nav-link{display:inline-flex;align-items:center;min-height:44px;padding:0 13px;font-size:15px;color:var(--text);border-radius:2px;position:relative;transition:color .2s ease,background-color .2s ease;}
.nav-link::after{content:"";position:absolute;left:13px;right:13px;bottom:9px;height:1px;background:var(--brass);transform:scaleX(0);transform-origin:left;transition:transform .22s cubic-bezier(.2,.7,.2,1);}
.nav-link:hover{color:var(--brass);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brass);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none;}
.nav-toggle{display:none;width:46px;height:46px;border:1px solid var(--line);border-radius:3px;background:transparent;align-items:center;justify-content:center;cursor:pointer;}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
/* 抽屉 */
.nav-drawer{position:fixed;inset:0;z-index:120;background:var(--paper);transform:translateX(100%);transition:transform .3s cubic-bezier(.2,.7,.2,1);display:flex;flex-direction:column;padding:22px 22px 30px;overflow-y:auto;}
.nav-drawer.is-open{transform:translateX(0);}
.nav-drawer__head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line);}
.nav-drawer__close{width:44px;height:44px;border:1px solid var(--line);border-radius:3px;background:transparent;font-size:20px;line-height:1;color:var(--ink);cursor:pointer;}
.nav-drawer__list{display:flex;flex-direction:column;margin-top:10px;}
.nav-drawer__list a{display:flex;align-items:center;min-height:52px;font-size:18px;border-bottom:1px solid var(--line);}
.nav-drawer__foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px;}

/* 通用组件 */
.chip{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:999px;border:1px solid var(--line);font-size:12.5px;letter-spacing:.06em;color:var(--muted);background:transparent;transition:all .2s ease;}
.chip--brass{border-color:var(--brass);color:var(--brass);}
.chip--brass:hover{background:var(--brass);color:var(--paper);border-color:var(--brass);}
.chip--solid{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 26px;border-radius:2px;font-size:15px;font-weight:500;letter-spacing:.02em;border:1px solid transparent;cursor:pointer;transition:background-color .22s cubic-bezier(.2,.7,.2,1),color .22s cubic-bezier(.2,.7,.2,1),border-color .22s ease,transform .12s ease;}
.btn:active{transform:translateY(1px);}
.btn--primary{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.btn--primary:hover{background:var(--brass);border-color:var(--brass);color:var(--paper);}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn--ghost:hover{background:var(--ink);color:var(--paper);}
.btn--light{background:transparent;color:var(--paper);border-color:rgba(246,243,238,.6);}
.btn--light:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink);position:relative;padding-bottom:3px;}
.link-arrow::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--brass);transform:scaleX(0);transform-origin:left;transition:transform .25s cubic-bezier(.2,.7,.2,1);}
.link-arrow:hover{color:var(--brass);}
.link-arrow:hover::after{transform:scaleX(1);}

/* 面包屑 */
.crumb-bar{border-bottom:1px solid var(--line);background:var(--paper);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;min-height:40px;font-size:13px;color:var(--muted);}
.crumb a{color:var(--muted);transition:color .2s ease;}
.crumb a:hover{color:var(--brass);}
.crumb .crumb__sep{color:var(--line);}
.crumb .crumb__now{color:var(--muted);}

/* 板块 */
.section{padding:88px 0;border-top:1px solid var(--line);}
.section--paper2{background:var(--paper-2);}
.section--ink{background:var(--ink);color:var(--paper);border-top-color:rgba(246,243,238,.14);}
.section--ink .section__desc{color:rgba(246,243,238,.72);}
.section__head{position:relative;max-width:820px;margin-bottom:44px;}
.section__num{display:block;font-family:var(--serif);font-size:52px;line-height:1;font-weight:900;color:transparent;-webkit-text-stroke:1px rgba(20,18,15,.35);margin-bottom:14px;}
.section--ink .section__num{-webkit-text-stroke:1px rgba(246,243,238,.42);}
.section__title{font-family:var(--serif);font-weight:700;font-size:clamp(1.55rem,3vw,2.3rem);line-height:1.25;letter-spacing:-.01em;}
.section__desc{margin-top:14px;color:var(--muted);max-width:68ch;}
.section__rule{display:block;width:64px;height:1px;background:var(--brass);margin-top:20px;}

/* 分类页头 */
.cat-head{background:var(--paper-2);border-bottom:1px solid var(--line);padding:56px 0 54px;}
.cat-head__grid{display:grid;grid-template-columns:96px minmax(0,1fr) 220px;gap:36px;align-items:start;}
.cat-head__num{font-family:var(--serif);font-weight:900;font-size:44px;line-height:1;color:transparent;-webkit-text-stroke:1px rgba(20,18,15,.42);padding-top:6px;}
.cat-head__num small{display:block;-webkit-text-stroke:0;color:var(--muted);font-family:var(--sans);font-size:11.5px;letter-spacing:.18em;margin-top:14px;font-weight:400;}
.cat-head__title{font-family:var(--serif);font-weight:900;font-size:clamp(2rem,4.2vw,3.2rem);line-height:1.15;letter-spacing:-.01em;margin:0 0 18px;}
.cat-head__lead{font-size:16px;color:var(--muted);line-height:1.9;margin:0 0 12px;max-width:64ch;}
.cat-head__lead:last-of-type{margin-bottom:22px;}
.cat-head__aside{border-left:1px solid var(--line);padding-left:24px;font-size:13.5px;color:var(--muted);line-height:1.9;}
.cat-head__aside strong{display:block;font-family:var(--serif);font-size:30px;line-height:1;color:var(--ink);}
.cat-head__aside span{display:block;font-size:12px;letter-spacing:.14em;margin-top:8px;}
.cat-head__aside p{margin-top:18px;}

/* 索引条 */
.topic-index{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper);padding:22px 0;}
.topic-index__inner{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.topic-index__label{font-size:12px;letter-spacing:.18em;color:var(--muted);margin-right:8px;flex:none;}

/* 文章卡片列表 */
.post-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.post-card{display:block;min-width:0;background:var(--paper);border:1px solid var(--line);border-left:3px solid transparent;border-radius:var(--radius);padding:26px 26px 22px;transition:transform .22s cubic-bezier(.2,.7,.2,1),box-shadow .22s ease,border-color .22s ease;}
.post-card:hover{transform:translateY(-3px);border-color:var(--ink);border-left-color:var(--brass);box-shadow:var(--shadow);}
.post-card__title{font-family:var(--serif);font-size:19px;line-height:1.5;font-weight:700;color:var(--ink);margin-bottom:10px;}
.post-card__excerpt{font-size:14.5px;line-height:1.85;color:var(--muted);margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card__meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:12.5px;color:var(--muted);}
.post-card__cat{padding:2px 10px;border:1px solid var(--line);border-radius:999px;font-size:12px;letter-spacing:.04em;}
.post-card__time{font-size:12.5px;color:var(--muted);}
.post-card__more{margin-left:auto;color:var(--brass);font-size:13px;transition:opacity .2s ease;}
.post-card:hover .post-card__more{opacity:.75;}
.empty-state{border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);padding:36px 28px;text-align:center;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:18px;}

/* 概念拆解 */
.concept-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.concept-card{min-width:0;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;transition:transform .22s cubic-bezier(.2,.7,.2,1),box-shadow .22s ease,border-color .22s ease;}
.concept-card:hover{transform:translateY(-3px);border-color:var(--ink);box-shadow:var(--shadow);}
.concept-card__term{font-family:var(--serif);font-size:19px;font-weight:700;color:var(--ink);margin-bottom:12px;}
.concept-card__row{font-size:14.3px;line-height:1.85;color:var(--muted);margin-bottom:12px;}
.concept-card__row:last-child{margin-bottom:0;}
.concept-card__key{display:inline-block;font-size:11.5px;letter-spacing:.14em;color:var(--brass);margin-bottom:2px;}

/* 规则表 */
.table-wrap{border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);overflow-x:auto;}
.rule-table{width:100%;min-width:640px;border-collapse:collapse;}
.rule-table th{background:var(--pine);color:rgba(246,243,238,.94);font-size:13.5px;font-weight:500;letter-spacing:.08em;text-align:left;padding:14px 18px;}
.rule-table td{padding:15px 18px;font-size:14.5px;color:var(--text);border-top:1px solid var(--line);vertical-align:top;}
.rule-table td:first-child{font-family:var(--serif);font-weight:700;color:var(--ink);white-space:nowrap;}
.rule-table tbody tr:hover{background:var(--paper-2);}
.table-hint{font-size:12.5px;color:var(--muted);margin-top:12px;}

/* 阅读路径 */
.path-list{border-left:1px solid var(--line);padding-left:30px;display:flex;flex-direction:column;gap:28px;max-width:860px;}
.path-item{position:relative;min-width:0;}
.path-item::before{content:"";position:absolute;left:-36px;top:9px;width:11px;height:11px;border-radius:50%;background:var(--paper-2);border:1px solid var(--brass);}
.path-item__step{display:block;font-size:12px;letter-spacing:.18em;color:var(--brass);margin-bottom:6px;}
.path-item__title{font-family:var(--serif);font-size:19px;font-weight:700;color:var(--ink);margin-bottom:8px;}
.path-item__desc{font-size:14.5px;color:var(--muted);line-height:1.85;max-width:64ch;}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);overflow:hidden;transition:border-color .22s ease;}
.faq-item:hover{border-color:var(--ink);}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding:18px 22px;font-family:var(--serif);font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.6;min-height:48px;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";color:var(--brass);font-size:20px;line-height:1;flex:none;margin-top:2px;}
.faq-item[open] summary::after{content:"–";}
.faq-item[open] summary{border-left:2px solid var(--brass);padding-left:20px;}
.faq-body{padding:0 22px 20px;font-size:14.8px;line-height:1.9;color:var(--muted);}

/* 下载 */
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.dl-card{min-width:0;border:1px solid rgba(246,243,238,.22);border-radius:var(--radius);padding:28px 24px;background:rgba(246,243,238,.03);transition:transform .22s cubic-bezier(.2,.7,.2,1),border-color .22s ease,background-color .22s ease;}
.dl-card:hover{transform:translateY(-3px);border-color:rgba(246,243,238,.55);background:rgba(246,243,238,.06);}
.dl-card__icon{width:34px;height:34px;color:var(--brass);margin-bottom:18px;}
.dl-card__name{font-family:var(--serif);font-size:19px;font-weight:700;margin-bottom:8px;color:var(--paper);}
.dl-card__desc{font-size:13.5px;line-height:1.8;color:rgba(246,243,238,.66);margin-bottom:20px;}
.dl-card .btn{width:100%;}
.dl-note{font-size:13px;color:rgba(246,243,238,.5);margin-top:24px;line-height:1.8;}
.dl-head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:40px;}

/* 风险提示 */
.risk-section{border-top:1px solid var(--line);background:var(--paper);padding:36px 0;}
.risk-box{border-left:2px solid var(--risk);padding-left:18px;font-size:13px;line-height:1.95;color:var(--muted);max-width:960px;}

/* 页脚 */
.site-footer{background:var(--ink);color:var(--paper);padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px;padding-bottom:48px;}
.footer-col{min-width:0;}
.footer-col h3{font-family:var(--serif);font-size:15px;font-weight:700;letter-spacing:.12em;color:rgba(246,243,238,.94);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:rgba(246,243,238,.7);transition:color .2s ease;}
.footer-col a:hover{color:var(--brass);}
.footer-col p{font-size:13px;line-height:1.95;color:rgba(246,243,238,.6);}
.footer-bottom{border-top:1px solid rgba(246,243,238,.14);padding:24px 0 28px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;}
.footer-brand strong{font-family:var(--serif);font-size:18px;letter-spacing:.02em;}
.footer-brand span{display:block;font-size:12px;letter-spacing:.14em;color:rgba(246,243,238,.55);margin-top:5px;}
.footer-meta{font-size:13px;color:rgba(246,243,238,.5);}

/* 动效 */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.2,1);}
.js .reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .js .reveal{opacity:1;transform:none;transition:none;}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* 响应式 */
@media (max-width:1024px){
  .site-container{padding:0 28px;}
  .section{padding:64px 0;}
  .cat-head__grid{grid-template-columns:72px minmax(0,1fr);gap:24px;}
  .cat-head__aside{grid-column:1 / -1;border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:18px;display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;}
  .cat-head__aside p{margin-top:0;}
  .concept-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .nav-list{gap:0;}
  .nav-link{padding:0 10px;font-size:14px;}
}
@media (max-width:900px){
  .nav-list{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .btn--primary{display:none;}
}
@media (max-width:768px){
  body{font-size:16px;line-height:1.85;}
  .site-container{padding:0 22px;}
  .section{padding:56px 0;}
  .section__num{font-size:40px;}
  .post-grid{grid-template-columns:minmax(0,1fr);}
  .concept-grid{grid-template-columns:minmax(0,1fr);}
  .dl-grid{grid-template-columns:minmax(0,1fr);}
  .cat-head{padding:40px 0 40px;}
  .cat-head__grid{grid-template-columns:minmax(0,1fr);gap:18px;}
  .cat-head__num{font-size:32px;}
  .cat-head__num small{display:inline;margin-left:10px;letter-spacing:.14em;}
  .path-list{padding-left:22px;}
  .path-item::before{left:-28px;}
}
@media (max-width:520px){
  .site-container{padding:0 18px;}
  .brand__sub{display:none;}
  .notice-text{font-size:12px;}
  .section{padding:48px 0;}
  .post-card{padding:22px 18px 18px;}
  .post-card__more{margin-left:0;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .topic-index__label{width:100%;margin-bottom:2px;}
}