/* roulang page: index */
:root{
  --pine:#1F3B34;
  --pine-dark:#172E28;
  --clay:#C9702E;
  --clay-dark:#A85A22;
  --moss:#7C8B6F;
  --paper:#F4F1E9;
  --sand:#EDE8DC;
  --ink:#1B1D1A;
  --ink-2:#5A5F57;
  --ink-3:#8B8F86;
  --line:#DDD6C7;
  --risk-bg:#FBF1E7;
  --risk-ink:#A8362A;
  --radius:10px;
  --radius-lg:14px;
  --radius-sm:8px;
  --shadow-1:0 1px 2px rgba(27,29,26,.06);
  --shadow-2:0 8px 24px rgba(27,29,26,.10);
  --bs-primary:#1F3B34;
  --bs-body-bg:#F4F1E9;
  --bs-body-color:#1B1D1A;
  --bs-border-color:#DDD6C7;
  --bs-link-color:#1F3B34;
  --bs-link-hover-color:#C9702E;
  --bs-border-radius:10px;
  --bs-body-font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink)}
p{margin:0 0 1em}
a{color:var(--pine);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--clay);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
img{max-width:100%;height:auto;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.container{width:100%;max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto}
section[id]{scroll-margin-top:90px}
.num{font-variant-numeric:tabular-nums}

/* ===== 顶部信息条 ===== */
.topbar{background:var(--pine);color:#fff;font-size:13px;line-height:1.4}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;padding-top:6px;padding-bottom:6px}
.topbar-left{display:flex;align-items:center;gap:10px;min-width:0}
.topbar-domain{font-weight:600;letter-spacing:.02em}
.topbar-note{color:#BFCBC3;white-space:nowrap}
.topbar-mid{color:#C8D2CA;flex:1 1 auto;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:16px;flex:0 0 auto}
.topbar-right a{color:#fff;font-weight:500}
.topbar-right a:hover{color:#E9A46A;text-decoration:none}

/* ===== 主导航 ===== */
.main-nav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:1030;transition:box-shadow .22s ease}
.main-nav.is-stuck{box-shadow:0 2px 8px rgba(27,29,26,.06)}
.nav-shell{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;min-width:0}
.brand:hover{text-decoration:none}
.brand-seal{width:38px;height:38px;border-radius:8px;border:2px solid var(--clay);background:var(--pine);position:relative;flex:0 0 auto;display:block}
.brand-seal::before{content:"";position:absolute;inset:8px 8px auto 8px;height:2px;background:#F4F1E9;opacity:.85}
.brand-seal::after{content:"";position:absolute;inset:16px 8px 8px 8px;border:1px solid rgba(244,241,233,.7);border-radius:2px}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{font-size:19px;font-weight:700;color:var(--pine);letter-spacing:.01em}
.brand-text small{font-size:12px;color:var(--ink-3);letter-spacing:.06em}
.nav-menu{display:flex;align-items:center;gap:2px}
.nav-menu .nav-item-link{display:block;padding:10px 12px;font-size:15px;color:var(--ink-2);border-bottom:2px solid transparent;transition:color .2s ease,border-color .2s ease,background .2s ease;border-radius:6px 6px 0 0;white-space:nowrap}
.nav-menu .nav-item-link:hover{color:var(--pine);background:var(--sand);text-decoration:none}
.nav-menu .nav-item-link.active{color:var(--pine);font-weight:600;border-bottom-color:var(--clay)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.navbar-toggler{border:1px solid var(--line);border-radius:8px;padding:8px 12px;background:#fff}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(31,59,52,.12);outline:none}
.toggler-bars{display:block;width:20px;height:2px;background:var(--pine);position:relative}
.toggler-bars::before,.toggler-bars::after{content:"";position:absolute;left:0;width:20px;height:2px;background:var(--pine)}
.toggler-bars::before{top:-6px}
.toggler-bars::after{top:6px}

/* ===== 按钮 ===== */
.btn-brand,.btn-ghost,.btn-quiet{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;line-height:1.2;padding:12px 24px;border-radius:var(--radius-sm);min-height:44px;text-align:center;transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;cursor:pointer}
.btn-brand{background:var(--clay);color:#fff;border:1px solid var(--clay)}
.btn-brand:hover{background:var(--clay-dark);border-color:var(--clay-dark);color:#fff;transform:translateY(-1px);text-decoration:none;box-shadow:0 6px 16px rgba(201,112,46,.22)}
.btn-brand:active{transform:translateY(0)}
.btn-brand:focus-visible{outline:2px solid var(--pine);outline-offset:2px}
.btn-ghost{background:transparent;color:var(--pine);border:1.5px solid var(--pine)}
.btn-ghost:hover{background:var(--pine);color:#fff;text-decoration:none;transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-ghost:focus-visible{outline:2px solid var(--clay);outline-offset:2px}
.btn-quiet{background:transparent;color:var(--pine);border:1px solid transparent;padding:10px 6px;min-height:auto}
.btn-quiet:hover{color:var(--clay);text-decoration:underline;text-underline-offset:4px}
.btn-sm-nav{padding:9px 18px;font-size:14px;min-height:40px}

/* ===== 区块通用 ===== */
.section{padding:72px 0;border-top:1px solid var(--line);position:relative}
.section--white{background:#fff}
.section--paper{background:var(--paper)}
.section--sand{background:var(--sand)}
.section--pine{background:var(--pine);border-top:none;color:#fff}
.section-head{max-width:800px;margin-bottom:36px}
.section-head h2{font-size:26px;line-height:1.4;font-weight:700;padding-left:16px;position:relative}
.section-head h2::before{content:"";position:absolute;left:0;top:7px;width:4px;height:18px;background:var(--clay);border-radius:2px}
.section-head p{margin:12px 0 0;color:var(--ink-2);font-size:15.5px;line-height:1.8;max-width:760px}
.prose{max-width:760px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}

/* ===== 卡片 ===== */
.site-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-1);transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;min-width:0;display:flex;flex-direction:column}
.site-card:hover{border-color:var(--clay);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.site-card h3{font-size:19px;line-height:1.5;font-weight:600;margin-bottom:8px}
.site-card p{color:var(--ink-2);font-size:14.5px;line-height:1.75;margin:0 0 12px}
.card-link{margin-top:auto;font-size:14px;font-weight:600;color:var(--pine);display:inline-flex;align-items:center;gap:6px}
.card-link:hover{color:var(--clay);text-decoration:none}
.card-link::after{content:"›";font-size:17px;line-height:1;transition:transform .2s ease}
.card-link:hover::after{transform:translateX(3px)}
.t-badge{display:inline-block;border-radius:999px;background:var(--sand);color:var(--pine);font-size:12.5px;padding:4px 10px;line-height:1.4;white-space:nowrap}
.t-badge--clay{background:var(--risk-bg);color:var(--clay-dark)}

/* ===== Hero ===== */
.hero{padding:56px 0 64px;background:#fff;border-top:none}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);gap:48px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--pine);background:var(--sand);border-radius:999px;padding:6px 14px;margin-bottom:18px;font-weight:600}
.hero-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--clay)}
.hero h1{font-size:clamp(28px,4vw,44px);line-height:1.35;font-weight:700;letter-spacing:-.01em;margin-bottom:16px}
.hero h1 em{font-style:normal;color:var(--clay);box-shadow:inset 0 -10px 0 rgba(201,112,46,.14)}
.hero-sub{font-size:16.5px;line-height:1.85;color:var(--ink-2);max-width:560px;margin-bottom:18px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.hero-tags .t-badge{background:var(--sand);border:1px solid var(--line)}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:20px}
.hero-note{font-size:13px;line-height:1.7;color:var(--ink-3);border-top:1px dashed var(--line);padding-top:14px;max-width:560px}
.hero-visual{position:relative}
.hero-svg-wrap{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);padding:18px;box-shadow:var(--shadow-1)}
.hero-svg-wrap svg{width:100%;height:auto;display:block;border-radius:8px}
.hero-info-card{position:absolute;left:-18px;bottom:-22px;background:rgba(31,59,52,.94);color:#fff;border-radius:var(--radius);padding:16px 18px;max-width:300px;box-shadow:0 12px 28px rgba(27,29,26,.22)}
.hero-info-card strong{display:block;font-size:14px;margin-bottom:6px;color:#fff}
.hero-info-card span{display:block;font-size:12.5px;line-height:1.7;color:#C8D2CA}

/* ===== 下载区 ===== */
.dl-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.dl-head .section-head{margin-bottom:0}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.dl-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow-1);transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;display:flex;flex-direction:column;min-width:0}
.dl-card:hover{border-color:var(--clay);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.dl-icon{width:52px;height:52px;border-radius:12px;background:var(--sand);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.dl-icon svg{width:26px;height:26px;stroke:var(--pine);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.dl-card h3{font-size:18px;margin-bottom:6px}
.dl-card p{font-size:14px;color:var(--ink-2);margin:0 0 18px;flex:1 1 auto}
.dl-card .btn-ghost{width:100%}
.dl-card .btn-ghost:hover{background:var(--pine);color:#fff}
.dl-foot{font-size:12.5px;color:var(--ink-3);margin-top:12px}

/* ===== 概念索引 / 核验 ===== */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.chip{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 18px;font-size:14px;color:var(--pine);transition:border-color .2s ease,background .2s ease,color .2s ease,transform .2s ease}
.chip:hover{border-color:var(--clay);background:var(--risk-bg);color:var(--clay-dark);text-decoration:none;transform:translateY(-1px)}
.chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--moss)}
.check-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.check-item{background:#fff;border:1px solid var(--line);border-left:3px solid var(--moss);border-radius:var(--radius);padding:20px 22px;min-width:0;transition:border-color .2s ease,box-shadow .2s ease}
.check-item:hover{border-left-color:var(--clay);box-shadow:var(--shadow-1)}
.check-item h3{font-size:16.5px;margin-bottom:6px}
.check-item p{font-size:14px;color:var(--ink-2);margin:0}

/* ===== 四观察面 ===== */
.analysis-list{display:flex;flex-direction:column;gap:20px}
.analysis-row{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:20px;align-items:stretch}
.analysis-row.is-reverse{grid-template-columns:minmax(0,1fr) minmax(0,1.35fr)}
.analysis-main{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;box-shadow:var(--shadow-1);min-width:0;display:flex;flex-direction:column;transition:border-color .22s ease,box-shadow .22s ease}
.analysis-main:hover{border-color:var(--clay);box-shadow:var(--shadow-2)}
.analysis-num{font-size:32px;font-weight:700;color:var(--clay);line-height:1;margin-bottom:10px;font-variant-numeric:tabular-nums}
.analysis-main h3{font-size:20px;margin-bottom:10px}
.analysis-main p{color:var(--ink-2);font-size:14.5px;margin:0 0 12px}
.analysis-side{background:var(--sand);border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;justify-content:center;min-width:0}
.analysis-side .t-badge{margin-bottom:10px;align-self:flex-start}
.analysis-side ul li{font-size:13.8px;color:var(--ink-2);line-height:1.75;padding-left:16px;position:relative}
.analysis-side ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:1px;background:var(--clay)}

/* ===== 使用场景 ===== */
.scene-track{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.scene-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-1);min-width:0;display:flex;flex-direction:column;transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease}
.scene-card:hover{border-color:var(--clay);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.scene-card h3{font-size:16.5px;line-height:1.5;margin-bottom:8px}
.scene-card p{font-size:14px;color:var(--ink-2);margin:0 0 14px;flex:1 1 auto}

/* ===== 演示区 ===== */
.demo-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:center;margin-bottom:44px}
.demo-row:last-child{margin-bottom:0}
.demo-row.is-reverse .demo-visual{order:2}
.demo-text h3{font-size:21px;margin-bottom:12px}
.demo-text p{color:var(--ink-2);font-size:15px;margin-bottom:14px}
.demo-points li{font-size:14.5px;color:var(--ink-2);line-height:1.8;padding-left:22px;position:relative;margin-bottom:6px}
.demo-points li::before{content:"";position:absolute;left:2px;top:11px;width:8px;height:8px;border-radius:2px;background:var(--sand);border:1px solid var(--moss)}
.ui-frame{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:inset 0 0 0 1px rgba(221,214,199,.5),var(--shadow-1);overflow:hidden;aspect-ratio:16/10;display:flex;flex-direction:column}
.ui-bar{display:flex;align-items:center;gap:6px;padding:10px 14px;background:var(--sand);border-bottom:1px solid var(--line)}
.ui-bar i{width:8px;height:8px;border-radius:50%;background:#C6BFAE;display:block}
.ui-body{padding:16px 18px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;overflow:hidden}
.ui-row{display:flex;align-items:center;justify-content:space-between;gap:10px;border:1px solid var(--line);border-radius:8px;padding:9px 12px;background:#FCFAF4}
.ui-row .ui-label{font-size:13px;color:var(--ink-2)}
.ui-chip{font-size:12px;color:var(--pine);background:var(--sand);border-radius:999px;padding:2px 10px;white-space:nowrap}
.ui-chip.is-warn{color:var(--clay-dark);background:var(--risk-bg)}
.ui-note{font-size:12px;color:var(--ink-3);margin-top:auto}

/* ===== 流程步骤 ===== */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;position:relative}
.step{min-width:0;position:relative;padding-top:8px}
.step-dot{width:40px;height:40px;border-radius:50%;border:1.5px solid var(--clay);background:#FCFAF4;color:var(--clay-dark);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;margin-bottom:14px;position:relative;z-index:2}
.step::after{content:"";position:absolute;left:52px;top:28px;right:-20px;border-top:1px dashed var(--line);z-index:1}
.steps .step:last-child::after{display:none}
.step h3{font-size:16.5px;margin-bottom:6px}
.step p{font-size:14px;color:var(--ink-2);margin:0}

/* ===== 名词速查 ===== */
.term-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;min-width:0;box-shadow:var(--shadow-1);transition:border-color .22s ease,box-shadow .22s ease}
.term-card:hover{border-color:var(--clay);box-shadow:var(--shadow-2)}
.term-card h3{font-size:17px;margin-bottom:8px}
.term-card p{font-size:14px;color:var(--ink-2);margin:0 0 10px}

/* ===== 情境复盘 ===== */
.case-card{background:#fff;border:1px solid var(--line);border-top:3px solid var(--clay);border-radius:var(--radius);padding:26px;min-width:0;box-shadow:var(--shadow-1)}
.case-card .t-badge{margin-bottom:12px}
.case-card h3{font-size:19px;margin-bottom:10px}
.case-card p{font-size:14.5px;color:var(--ink-2);margin:0 0 12px}
.case-steps{display:flex;flex-direction:column;gap:8px}
.case-steps li{font-size:14px;color:var(--ink-2);line-height:1.75;padding-left:26px;position:relative}
.case-steps li::before{content:attr(data-step);position:absolute;left:0;top:2px;width:18px;height:18px;border-radius:50%;background:var(--sand);color:var(--pine);font-size:11px;display:flex;align-items:center;justify-content:center;font-weight:700}

/* ===== 费用结构 ===== */
.plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;align-items:stretch}
.plan-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;min-width:0;display:flex;flex-direction:column;box-shadow:var(--shadow-1);transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;position:relative}
.plan-card:hover{border-color:var(--clay);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.plan-card.is-featured{border-top:3px solid var(--clay);padding-top:28px}
.plan-card.is-featured::before{content:"常见选择";position:absolute;top:-13px;left:24px;background:var(--clay);color:#fff;font-size:12px;border-radius:999px;padding:3px 12px;font-weight:600}
.plan-card h3{font-size:19px;margin-bottom:6px}
.plan-sub{font-size:13px;color:var(--ink-3);margin-bottom:16px}
.plan-card ul{display:flex;flex-direction:column;gap:10px;margin-bottom:20px;flex:1 1 auto}
.plan-card ul li{font-size:14px;color:var(--ink-2);line-height:1.7;padding-left:18px;position:relative}
.plan-card ul li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;border:1px solid var(--moss);background:var(--sand)}
.plan-card .btn-ghost{width:100%}

/* ===== 关注点墙 ===== */
.concern-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.concern{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;font-size:14.5px;color:var(--ink);line-height:1.7;min-width:0;transition:border-color .2s ease,background .2s ease,color .2s ease;display:flex;gap:10px;align-items:flex-start}
.concern:hover{border-color:var(--clay);background:#FCFAF4}
.concern i{flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:var(--clay);margin-top:9px;display:block}

/* ===== 问答摘要 ===== */
.qa-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.qa-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;min-width:0;box-shadow:var(--shadow-1)}
.qa-item h3{font-size:16.5px;line-height:1.55;margin-bottom:10px;color:var(--pine)}
.qa-item p{font-size:14px;color:var(--ink-2);margin:0}
.qa-more{margin-top:24px}

/* ===== 资讯 ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;min-width:0;display:flex;flex-direction:column;box-shadow:var(--shadow-1);transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease}
.news-card:hover{border-color:var(--clay);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.news-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
.news-time{font-size:12.5px;color:var(--ink-3);white-space:nowrap}
.news-title{font-size:17px;line-height:1.55;margin-bottom:10px;font-weight:600}
.news-title a{color:var(--ink)}
.news-title a:hover{color:var(--clay);text-decoration:none}
.news-sum{font-size:14px;color:var(--ink-2);line-height:1.75;margin:0 0 14px;flex:1 1 auto;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-more{font-size:13.5px;font-weight:600;color:var(--pine)}
.news-more:hover{color:var(--clay);text-decoration:none}
.news-empty{grid-column:1/-1;background:#fff;border:1px dashed var(--line);border-radius:var(--radius);padding:44px 24px;text-align:center;color:var(--ink-3);font-size:14.5px}
.news-empty strong{display:block;color:var(--ink-2);font-size:16px;margin-bottom:6px}

/* ===== 分类入口 ===== */
.channel-grid{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr) minmax(0,1fr);gap:20px}
.channel-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;min-width:0;display:flex;flex-direction:column;box-shadow:var(--shadow-1);transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease}
.channel-card:hover{border-color:var(--clay);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.channel-card.is-main{background:var(--pine);color:#fff;border-color:var(--pine)}
.channel-card.is-main h3{color:#fff;font-size:21px}
.channel-card.is-main p{color:#C8D2CA}
.channel-card h3{font-size:18px;margin-bottom:8px}
.channel-card p{font-size:14px;color:var(--ink-2);margin:0 0 16px;flex:1 1 auto}
.channel-card.is-main .card-link{color:#E9A46A}
.channel-card.is-main .card-link:hover{color:#fff;text-decoration:none}

/* ===== FAQ ===== */
.faq-wrap{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:40px;align-items:start}
.faq-side h2{font-size:26px;line-height:1.4;padding-left:16px;position:relative;margin-bottom:14px}
.faq-side h2::before{content:"";position:absolute;left:0;top:7px;width:4px;height:18px;background:var(--clay);border-radius:2px}
.faq-side p{color:var(--ink-2);font-size:15px}
.faq-accordion .accordion-item{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius)!important;margin-bottom:12px;overflow:hidden}
.faq-accordion .accordion-button{background:var(--paper);color:var(--ink);font-size:16px;font-weight:600;line-height:1.6;padding:18px 46px 18px 20px;box-shadow:none;border-radius:0}
.faq-accordion .accordion-button:not(.collapsed){background:#FCFAF4;color:var(--pine);box-shadow:none}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--pine);outline-offset:-2px}
.faq-accordion .accordion-button::after{width:12px;height:12px;background:none;border-right:2px solid var(--clay);border-bottom:2px solid var(--clay);transform:rotate(45deg);margin-top:-8px;transition:transform .2s ease}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);margin-top:0}
.faq-accordion .accordion-body{font-size:14.8px;color:var(--ink-2);line-height:1.85;padding:0 20px 20px}

/* ===== 风险提示 ===== */
.risk-note{background:var(--risk-bg);border:1px solid #E7D3C0;border-left:3px solid var(--risk-ink);border-radius:var(--radius);padding:18px 22px;color:var(--risk-ink);font-size:14px;line-height:1.8}
.risk-note strong{color:var(--risk-ink)}
.risk-strip{background:var(--risk-bg);border-top:1px solid #E7D3C0;border-bottom:1px solid #E7D3C0;padding:14px 0}
.risk-strip p{margin:0;font-size:13.5px;color:var(--risk-ink);line-height:1.7}

/* ===== 收尾CTA ===== */
.final-cta{background:var(--pine);color:#fff;padding:64px 0}
.final-inner{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:40px;align-items:center}
.final-cta h2{color:#fff;font-size:28px;line-height:1.45;margin-bottom:12px}
.final-cta p{color:#C8D2CA;font-size:15.5px;margin-bottom:22px;max-width:560px}
.final-actions{display:flex;flex-wrap:wrap;gap:12px}
.final-cta .btn-ghost{color:#fff;border-color:#fff}
.final-cta .btn-ghost:hover{background:#fff;color:var(--pine)}
.final-side{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius-lg);padding:24px}
.final-side h3{color:#fff;font-size:16px;margin-bottom:10px}
.final-side ul li{font-size:13.5px;color:#C8D2CA;line-height:1.8;padding-left:16px;position:relative}
.final-side ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:1px;background:#E9A46A}

/* ===== 页脚 ===== */
.site-footer{background:var(--pine);color:#DCE3DD;font-size:14px;padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1fr);gap:32px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.14)}
.brand--footer .brand-text strong{color:#fff}
.brand--footer .brand-text small{color:#9FAEA6}
.footer-brand p{font-size:13.5px;line-height:1.8;color:#9FAEA6;margin:16px 0 0;max-width:340px}
.footer-col h3{color:#fff;font-size:15px;margin-bottom:14px;font-weight:600}
.footer-col ul li{margin-bottom:9px}
.footer-col ul li a{color:#C8D2CA;font-size:13.8px}
.footer-col ul li a:hover{color:#E9A46A;text-decoration:none}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding-top:20px;font-size:13px;color:#8FA096}
.footer-bottom span{color:#8FA096}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .hero-grid{gap:36px}
  .scene-track{grid-template-columns:repeat(4,minmax(0,1fr))}
}
@media (max-width:1023px){
  .section{padding:56px 0}
  .hero{padding:44px 0 52px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-info-card{position:static;margin-top:16px;max-width:none}
  .grid-3,.dl-grid,.check-list,.term-grid,.plan-grid,.concern-grid,.qa-list,.news-grid,.channel-grid,.final-inner,.faq-wrap{grid-template-columns:repeat(2,minmax(0,1fr))}
  .channel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-track{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step::after{display:none}
  .analysis-row,.analysis-row.is-reverse{grid-template-columns:1fr}
  .demo-row,.demo-row.is-reverse{grid-template-columns:1fr;gap:24px}
  .demo-row.is-reverse .demo-visual{order:0}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .topbar-mid{display:none}
}
@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px}
  .section{padding:44px 0}
  .nav-menu{display:none}
  .nav-actions .btn-ghost{display:none}
  .hero h1{font-size:28px}
  .grid-2,.grid-3,.grid-4,.dl-grid,.check-list,.plan-grid,.concern-grid,.qa-list,.news-grid,.channel-grid,.final-inner,.faq-wrap{grid-template-columns:1fr}
  .scene-track{display:grid;grid-auto-flow:column;grid-auto-columns:82%;grid-template-columns:none;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px;-webkit-overflow-scrolling:touch}
  .scene-card{scroll-snap-align:start}
  .steps{grid-template-columns:1fr;gap:16px}
  .step{padding-left:52px;padding-top:0;min-height:44px}
  .step-dot{position:absolute;left:0;top:0;margin:0}
  .step h3{margin-top:4px}
  .footer-grid{grid-template-columns:1fr}
  .section-head h2,.faq-side h2{font-size:22px}
  .demo-text h3{font-size:19px}
  .topbar-note{display:none}
  .topbar-right{gap:12px}
  .hero-cta .btn-brand,.hero-cta .btn-ghost{flex:1 1 100%}
  .ui-frame{aspect-ratio:4/3}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .hero h1{font-size:26px}
  .hero-sub{font-size:15.5px}
  .brand-text strong{font-size:17px}
  .brand-text small{font-size:11px}
  .nav-actions .btn-brand{padding:8px 14px;font-size:13.5px;min-height:38px}
  .final-cta h2{font-size:22px}
  .section{padding:38px 0}
  .news-sum{-webkit-line-clamp:4}
}

/* roulang page: article */
:root{
  --pine:#1F3B34;
  --pine-dark:#172E28;
  --clay:#C9702E;
  --clay-dark:#A85A22;
  --moss:#7C8B6F;
  --paper:#F4F1E9;
  --sand:#EDE8DC;
  --ink:#1B1D1A;
  --ink-2:#5A5F57;
  --ink-3:#8B8F86;
  --line:#DDD6C7;
  --risk-bg:#FBF1E7;
  --risk-ink:#A8362A;
  --radius:10px;
  --radius-lg:14px;
  --radius-sm:8px;
  --shadow-1:0 1px 2px rgba(27,29,26,.06);
  --shadow-2:0 8px 24px rgba(27,29,26,.10);
  --bs-primary:#1F3B34;
  --bs-body-bg:#F4F1E9;
  --bs-body-color:#1B1D1A;
  --bs-border-color:#DDD6C7;
  --bs-link-color:#1F3B34;
  --bs-link-hover-color:#C9702E;
  --bs-border-radius:10px;
  --bs-body-font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--pine);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--clay);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
img{max-width:100%;height:auto;display:block}
button{font-family:inherit}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto}
section[id]{scroll-margin-top:90px}
/* ===== 顶部信息条 ===== */
.topbar{background:var(--pine);color:#fff;font-size:13px;line-height:1.4}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;padding-top:6px;padding-bottom:6px}
.topbar-left{display:flex;align-items:center;gap:10px;min-width:0}
.topbar-domain{font-weight:600;letter-spacing:.02em}
.topbar-note{color:#BFCBC3;white-space:nowrap}
.topbar-mid{color:#C8D2CA;flex:1 1 auto;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:16px;flex:0 0 auto}
.topbar-right a{color:#fff;font-weight:500}
.topbar-right a:hover{color:#E9A46A;text-decoration:none}
/* ===== 主导航 ===== */
.main-nav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:1030;transition:box-shadow .22s ease}
.main-nav.is-stuck{box-shadow:0 2px 8px rgba(27,29,26,.06)}
.nav-shell{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;min-width:0}
.brand:hover{text-decoration:none}
.brand-seal{width:38px;height:38px;border-radius:8px;border:2px solid var(--clay);background:var(--pine);position:relative;flex:0 0 auto;display:block}
.brand-seal::before{content:"";position:absolute;inset:8px 8px auto 8px;height:2px;background:#F4F1E9;opacity:.85}
.brand-seal::after{content:"";position:absolute;inset:16px 8px 8px 8px;border:1px solid rgba(244,241,233,.7);border-radius:2px}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{font-size:19px;font-weight:700;color:var(--pine);letter-spacing:.01em}
.brand-text small{font-size:12px;color:var(--ink-3);letter-spacing:.06em}
.nav-menu{display:flex;align-items:center;gap:2px}
.nav-menu .nav-item-link{display:block;padding:10px 12px;font-size:15px;color:var(--ink-2);border-bottom:2px solid transparent;transition:color .2s ease,border-color .2s ease,background .2s ease;border-radius:6px 6px 0 0;white-space:nowrap}
.nav-menu .nav-item-link:hover{color:var(--pine);background:var(--sand);text-decoration:none}
.nav-menu .nav-item-link.active{color:var(--pine);font-weight:600;border-bottom-color:var(--clay)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.navbar-toggler{border:1px solid var(--line);border-radius:8px;padding:8px 12px;background:#fff}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(31,59,52,.12);outline:none}
.toggler-bars,.toggler-bars::before,.toggler-bars::after{display:block;width:18px;height:2px;background:var(--pine);position:relative;border-radius:2px}
.toggler-bars::before,.toggler-bars::after{content:"";position:absolute;left:0}
.toggler-bars::before{top:-6px}
.toggler-bars::after{top:6px}
/* ===== 按钮 ===== */
.btn-brand,.btn-ghost,.btn-quiet{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;line-height:1.2;padding:12px 24px;border-radius:var(--radius-sm);min-height:44px;text-align:center;transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;cursor:pointer}
.btn-brand{background:var(--clay);color:#fff;border:1px solid var(--clay)}
.btn-brand:hover{background:var(--clay-dark);border-color:var(--clay-dark);color:#fff;transform:translateY(-1px);text-decoration:none;box-shadow:0 6px 16px rgba(201,112,46,.22)}
.btn-brand:active{transform:translateY(0)}
.btn-brand:focus-visible{outline:2px solid var(--pine);outline-offset:2px}
.btn-ghost{background:transparent;color:var(--pine);border:1.5px solid var(--pine)}
.btn-ghost:hover{background:var(--pine);color:#fff;text-decoration:none;transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-ghost:focus-visible{outline:2px solid var(--clay);outline-offset:2px}
.btn-sm-nav{padding:9px 18px;font-size:14px;min-height:40px}
/* ===== 区块 ===== */
.section{padding:72px 0;border-top:1px solid var(--line);position:relative}
.section--white{background:#fff}
.section--sand{background:var(--sand)}
.section-head{max-width:800px;margin-bottom:28px}
.section-head h2{font-size:26px;line-height:1.4;font-weight:700;padding-left:16px;position:relative;margin:0}
.section-head h2::before{content:"";position:absolute;left:0;top:7px;width:4px;height:18px;background:var(--clay);border-radius:2px}
.section-head p{margin:12px 0 0;color:var(--ink-2);font-size:15.5px;line-height:1.8;max-width:760px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.site-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-1);transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;min-width:0}
.site-card:hover{border-color:var(--clay);box-shadow:var(--shadow-2);transform:translateY(-2px)}
/* ===== 面包屑与文章框架 ===== */
.crumb-bar{font-size:13px;color:var(--ink-3);padding:20px 0 0;line-height:1.7}
.crumb-bar a{color:var(--ink-2)}
.crumb-bar a:hover{color:var(--clay)}
.crumb-sep{margin:0 8px;color:var(--ink-3)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:36px;padding:20px 0 64px;align-items:start}
.main-col{min-width:0}
.article-head{border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:26px}
.cat-flag{display:inline-flex;align-items:center;gap:6px;background:var(--sand);color:var(--pine);border-radius:999px;padding:4px 12px;font-size:12.5px;font-weight:600;margin-bottom:14px}
.article-head h1{font-size:clamp(26px,3.4vw,38px);line-height:1.4;font-weight:700;letter-spacing:-.01em;margin:0 0 16px;color:var(--ink)}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;font-size:13px;color:var(--ink-3)}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-dot{width:5px;height:5px;border-radius:50%;background:var(--moss);display:inline-block}
/* ===== 要点摘要卡 ===== */
.keypoints{background:var(--sand);border-radius:var(--radius);padding:22px 24px;margin-bottom:28px;border-left:4px solid var(--clay)}
.keypoints h2{font-size:17px;font-weight:700;margin:0 0 12px;color:var(--pine);padding:0}
.keypoints h2::before{display:none}
.keypoints ul{margin:0;padding-left:1.2em;color:var(--ink-2);font-size:15px;line-height:1.8}
.keypoints li{margin-bottom:8px}
.keypoints li:last-child{margin-bottom:0}
/* ===== 正文 ===== */
.article-body{max-width:760px;font-size:16px;line-height:1.85;color:var(--ink);word-wrap:break-word}
.article-body p{margin:0 0 1em}
.article-body h2{font-size:24px;line-height:1.45;font-weight:700;margin:34px 0 14px;padding-left:15px;position:relative;color:var(--ink)}
.article-body h2::before{content:"";position:absolute;left:0;top:8px;width:4px;height:18px;background:var(--clay);border-radius:2px}
.article-body h3{font-size:19px;line-height:1.5;font-weight:600;margin:26px 0 10px;color:var(--ink)}
.article-body h4{font-size:17px;font-weight:600;margin:20px 0 8px}
.article-body ul,.article-body ol{margin:0 0 1em;padding-left:1.4em;line-height:1.8}
.article-body li{margin-bottom:6px}
.article-body blockquote{margin:22px 0;padding:16px 18px;border-left:3px solid var(--clay);background:var(--sand);border-radius:0 10px 10px 0;color:var(--ink-2)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:10px;max-width:100%;height:auto;margin:16px 0}
.article-body figure{margin:20px 0}
.article-body figcaption{font-size:13px;color:var(--ink-3);margin-top:8px}
.article-body a{color:var(--pine);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--clay)}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px;font-variant-numeric:tabular-nums}
.article-body th{background:var(--sand);text-align:left;font-weight:600}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;vertical-align:top}
.article-body code{background:var(--sand);padding:1px 6px;border-radius:4px;font-size:14px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:28px 0}
/* ===== 风险提示块 ===== */
.risk-block{background:var(--risk-bg);border:1px solid #EBD5C2;border-radius:var(--radius);padding:18px 20px;margin:30px 0 8px;display:flex;gap:12px;align-items:flex-start}
.risk-block .risk-ico{flex:0 0 auto;width:22px;height:22px;border-radius:50%;border:1.5px solid var(--risk-ink);color:var(--risk-ink);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;line-height:1;margin-top:3px}
.risk-block p{margin:0;color:var(--risk-ink);font-size:14px;line-height:1.75}
/* ===== 相关推荐 ===== */
.related-wrap{margin-top:38px;padding-top:28px;border-top:1px solid var(--line)}
.related-wrap h2{font-size:20px;font-weight:700;margin:0 0 6px;padding-left:15px;position:relative}
.related-wrap h2::before{content:"";position:absolute;left:0;top:6px;width:4px;height:17px;background:var(--clay);border-radius:2px}
.related-sub{font-size:14px;color:var(--ink-3);margin:0 0 18px}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.rel-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;min-width:0;transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease}
.rel-card:hover{border-color:var(--clay);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.rel-card h3{font-size:15.5px;line-height:1.6;font-weight:600;margin:0 0 10px}
.rel-card h3 a{color:var(--ink)}
.rel-card h3 a:hover{color:var(--clay);text-decoration:none}
.rel-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-3)}
.empty-note{background:#fff;border:1px dashed var(--line);border-radius:var(--radius);padding:22px;color:var(--ink-3);font-size:14.5px;margin:0}
/* ===== 翻页返回 ===== */
.page-foot{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:32px}
/* ===== 侧栏 ===== */
.side-col{display:flex;flex-direction:column;gap:20px;min-width:0}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-1);min-width:0}
.side-card h2{font-size:16px;font-weight:700;margin:0 0 12px;color:var(--pine);padding-left:12px;position:relative}
.side-card h2::before{content:"";position:absolute;left:0;top:4px;width:4px;height:15px;background:var(--clay);border-radius:2px}
.toc-list{list-style:none;margin:0;padding:0;counter-reset:toc}
.toc-list li{margin-bottom:2px;min-width:0}
.toc-list a{display:block;padding:7px 10px;border-radius:6px;font-size:14px;line-height:1.6;color:var(--ink-2);border-left:2px solid transparent}
.toc-list a:hover{background:var(--sand);color:var(--pine);text-decoration:none}
.toc-list a.active{color:var(--clay);font-weight:600;background:#FBF8F1;border-left-color:var(--clay)}
.toc-empty{font-size:14px;color:var(--ink-3);margin:0}
.dl-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.dl-card h2{font-size:16px;font-weight:700;margin:0 0 6px;padding-left:12px;position:relative;color:var(--pine)}
.dl-card h2::before{content:"";position:absolute;left:0;top:4px;width:4px;height:15px;background:var(--clay);border-radius:2px}
.dl-card .dl-desc{font-size:13.5px;color:var(--ink-2);margin:0 0 14px;line-height:1.7}
.dl-btn{display:flex;align-items:center;justify-content:space-between;gap:10px;border:1.5px solid var(--pine);border-radius:var(--radius-sm);padding:11px 14px;font-size:14.5px;font-weight:600;color:var(--pine);margin-bottom:10px;min-height:44px;transition:background .22s ease,color .22s ease,border-color .22s ease}
.dl-btn:hover{background:var(--pine);color:#fff;text-decoration:none}
.dl-btn:focus-visible{outline:2px solid var(--clay);outline-offset:2px}
.dl-btn .dl-arrow{font-size:13px;opacity:.75}
.dl-note{font-size:12.5px;color:var(--ink-3);margin:6px 0 0;line-height:1.7}
/* ===== 页脚 ===== */
.site-footer{background:var(--pine);color:#fff;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px;padding:56px 0 32px}
.footer-brand{min-width:0}
.brand--footer .brand-text strong{color:#fff}
.brand--footer .brand-text small{color:#A9B7AF}
.brand--footer .brand-seal{border-color:var(--clay)}
.footer-brand p{color:#C8D2CA;font-size:14px;line-height:1.8;margin:16px 0 0;max-width:360px}
.footer-col{min-width:0}
.footer-col h3{font-size:15px;font-weight:600;margin:0 0 14px;color:#fff}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{color:#C8D2CA;font-size:14px}
.footer-col a:hover{color:#E9A46A;text-decoration:none}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0 22px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:#A9B7AF}
/* ===== 响应式 ===== */
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:28px}
  .side-col{order:2}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 26px}
  .section{padding:56px 0}
}
@media (max-width:768px){
  .container{padding-left:18px;padding-right:18px}
  .topbar-mid{display:none}
  .nav-shell{min-height:64px;gap:12px}
  .article-head h1{font-size:26px}
  .article-body{font-size:15.5px}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:18px}
  .section{padding:48px 0}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:575px){
  .container{padding-left:16px;padding-right:16px}
  .topbar-note{display:none}
  .topbar-right{gap:12px;font-size:12.5px}
  .brand-text strong{font-size:17px}
  .brand-seal{width:34px;height:34px}
  .nav-actions .btn-ghost{display:none}
  .article-body{font-size:15.5px;line-height:1.85}
  .keypoints{padding:18px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:24px;padding:36px 0 20px}
  .footer-bottom{flex-direction:column;gap:8px}
  .article-layout{padding-bottom:44px}
  .btn-brand,.btn-ghost{padding:12px 18px;font-size:14.5px}
}

/* roulang page: category1 */
:root{
  --pine:#1F3B34;
  --pine-dark:#172E28;
  --clay:#C9702E;
  --clay-dark:#A85A22;
  --moss:#7C8B6F;
  --paper:#F4F1E9;
  --sand:#EDE8DC;
  --ink:#1B1D1A;
  --ink-2:#5A5F57;
  --ink-3:#8B8F86;
  --line:#DDD6C7;
  --risk-bg:#FBF1E7;
  --risk-ink:#A8362A;
  --radius:10px;
  --radius-lg:14px;
  --radius-sm:8px;
  --shadow-1:0 1px 2px rgba(27,29,26,.06);
  --shadow-2:0 8px 24px rgba(27,29,26,.10);
  --bs-primary:#1F3B34;
  --bs-body-bg:#F4F1E9;
  --bs-body-color:#1B1D1A;
  --bs-border-color:#DDD6C7;
  --bs-link-color:#1F3B34;
  --bs-link-hover-color:#C9702E;
  --bs-border-radius:10px;
  --bs-body-font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:var(--pine);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--clay);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
img{max-width:100%;height:auto;display:block}
button{font-family:inherit}
h1,h2,h3,h4{margin:0}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto}
section[id],[id]{scroll-margin-top:96px}

/* ===== 顶部信息条 ===== */
.topbar{background:var(--pine);color:#fff;font-size:13px;line-height:1.4}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;padding-top:6px;padding-bottom:6px}
.topbar-left{display:flex;align-items:center;gap:10px;min-width:0}
.topbar-domain{font-weight:600;letter-spacing:.02em}
.topbar-note{color:#BFCBC3;white-space:nowrap}
.topbar-mid{color:#C8D2CA;flex:1 1 auto;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:16px;flex:0 0 auto}
.topbar-right a{color:#fff;font-weight:500}
.topbar-right a:hover{color:#E9A46A;text-decoration:none}

/* ===== 主导航 ===== */
.main-nav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:1030;transition:box-shadow .22s ease}
.main-nav.is-stuck{box-shadow:0 2px 8px rgba(27,29,26,.06)}
.nav-shell{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;min-width:0}
.brand:hover{text-decoration:none}
.brand-seal{width:38px;height:38px;border-radius:8px;border:2px solid var(--clay);background:var(--pine);position:relative;flex:0 0 auto;display:block}
.brand-seal::before{content:"";position:absolute;inset:8px 8px auto 8px;height:2px;background:#F4F1E9;opacity:.85}
.brand-seal::after{content:"";position:absolute;inset:16px 8px 8px 8px;border:1px solid rgba(244,241,233,.7);border-radius:2px}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{font-size:19px;font-weight:700;color:var(--pine);letter-spacing:.01em}
.brand-text small{font-size:12px;color:var(--ink-3);letter-spacing:.06em}
.nav-menu{display:flex;align-items:center;gap:2px}
.nav-menu .nav-item-link{display:block;padding:10px 12px;font-size:15px;color:var(--ink-2);border-bottom:2px solid transparent;transition:color .2s ease,border-color .2s ease,background .2s ease;border-radius:6px 6px 0 0;white-space:nowrap}
.nav-menu .nav-item-link:hover{color:var(--pine);background:var(--sand);text-decoration:none}
.nav-menu .nav-item-link.active{color:var(--pine);font-weight:600;border-bottom-color:var(--clay)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.navbar-toggler{border:1px solid var(--line);border-radius:8px;padding:8px 12px;background:#fff}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(31,59,52,.12);outline:none}
.toggler-bars{display:block;width:18px;height:2px;background:var(--pine);position:relative}
.toggler-bars::before,.toggler-bars::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--pine)}
.toggler-bars::before{top:-6px}
.toggler-bars::after{top:6px}

/* ===== 按钮 ===== */
.btn-brand,.btn-ghost,.btn-quiet{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;line-height:1.2;padding:12px 24px;border-radius:var(--radius-sm);min-height:44px;text-align:center;transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;cursor:pointer}
.btn-brand{background:var(--clay);color:#fff;border:1px solid var(--clay)}
.btn-brand:hover{background:var(--clay-dark);border-color:var(--clay-dark);color:#fff;transform:translateY(-1px);text-decoration:none;box-shadow:0 6px 16px rgba(201,112,46,.22)}
.btn-brand:active{transform:translateY(0)}
.btn-brand:focus-visible{outline:2px solid var(--pine);outline-offset:2px}
.btn-ghost{background:transparent;color:var(--pine);border:1.5px solid var(--pine)}
.btn-ghost:hover{background:var(--pine);color:#fff;text-decoration:none;transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-ghost:focus-visible{outline:2px solid var(--clay);outline-offset:2px}
.btn-quiet{background:transparent;color:var(--pine);border:1px solid transparent;padding:10px 6px;min-height:auto}
.btn-quiet:hover{color:var(--clay);text-decoration:underline;text-underline-offset:4px}
.btn-sm-nav{padding:9px 18px;font-size:14px;min-height:40px}

/* ===== 区块通用 ===== */
.section{padding:72px 0;border-top:1px solid var(--line);position:relative}
.section--white{background:#fff}
.section--paper{background:var(--paper)}
.section--sand{background:var(--sand)}
.section-head{max-width:800px;margin-bottom:36px}
.section-head h2{font-size:26px;line-height:1.4;font-weight:700;padding-left:16px;position:relative;color:var(--ink)}
.section-head h2::before{content:"";position:absolute;left:0;top:7px;width:4px;height:18px;background:var(--clay);border-radius:2px}
.section-head p{margin:12px 0 0;color:var(--ink-2);font-size:15.5px;line-height:1.8;max-width:760px}

/* ===== 分类头部 ===== */
.cat-head{padding:40px 0 52px;background:#fff;border-bottom:1px solid var(--line)}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:18px}
.crumbs a{color:var(--ink-2)}
.crumbs a:hover{color:var(--clay)}
.crumbs .sep{color:#BEB9AB}
.cat-head-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:36px;align-items:start}
.cat-head h1{font-size:clamp(26px,3.4vw,38px);line-height:1.35;font-weight:700;letter-spacing:-.01em;color:var(--ink);margin-bottom:16px}
.cat-lead{font-size:16px;line-height:1.85;color:var(--ink-2);max-width:640px;margin:0}
.cat-summary{background:var(--sand);border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px 24px;box-shadow:var(--shadow-1)}
.cat-summary h2{font-size:15px;font-weight:700;color:var(--pine);padding-left:12px;position:relative;margin-bottom:14px}
.cat-summary h2::before{content:"";position:absolute;left:0;top:4px;width:3px;height:14px;background:var(--clay);border-radius:2px}
.cat-summary ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.cat-summary li{position:relative;padding-left:16px;font-size:14px;line-height:1.7;color:var(--ink-2)}
.cat-summary li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:2px;background:var(--clay)}
.cat-summary .note{margin:14px 0 0;padding-top:12px;border-top:1px dashed var(--line);font-size:12.5px;line-height:1.7;color:var(--ink-3)}

/* ===== 锚点条 ===== */
.anchor-bar{background:#fff;border-bottom:1px solid var(--line)}
.anchor-inner{display:flex;gap:10px;overflow-x:auto;padding:14px 0;-webkit-overflow-scrolling:touch}
.anchor-inner::-webkit-scrollbar{height:4px}
.anchor-inner::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px}
.anchor-chip{flex:0 0 auto;font-size:14px;color:var(--pine);background:var(--sand);border:1px solid var(--line);border-radius:999px;padding:7px 16px;white-space:nowrap;transition:background .2s ease,color .2s ease,border-color .2s ease}
.anchor-chip:hover{background:var(--pine);color:#fff;border-color:var(--pine);text-decoration:none}

/* ===== 平台解析 ===== */
.plat-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.35fr);gap:40px;align-items:start}
.plat-intro p{font-size:15.5px;line-height:1.85;color:var(--ink-2)}
.plat-intro .tip{margin-top:18px;background:var(--paper);border-left:3px solid var(--clay);border-radius:0 var(--radius) var(--radius) 0;padding:14px 18px;font-size:14px;line-height:1.75;color:var(--ink-2)}
.plat-list{border-top:1px solid var(--line)}
.plat-item{display:grid;grid-template-columns:56px minmax(0,1fr);gap:16px;padding:20px 0;border-bottom:1px dashed var(--line);min-width:0}
.plat-num{font-size:20px;font-weight:700;color:var(--clay);line-height:1.3}
.plat-body{min-width:0}
.plat-body h3{font-size:17px;font-weight:600;color:var(--ink);margin-bottom:6px}
.plat-body p{font-size:14.5px;line-height:1.8;color:var(--ink-2);margin:0 0 8px}
.plat-body a{font-size:14px;font-weight:600;color:var(--pine)}
.plat-body a:hover{color:var(--clay)}

/* ===== 知识条目列表 ===== */
.know-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.know-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow-1);transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;min-width:0}
.know-card:hover{border-color:var(--clay);box-shadow:var(--shadow-2);transform:translateY(-2px);text-decoration:none}
.know-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.know-idx{font-size:13px;font-weight:700;color:var(--clay);border:1px solid var(--line);border-radius:6px;padding:2px 8px;background:var(--paper)}
.tag-pill{display:inline-block;font-size:12.5px;line-height:1.5;color:var(--pine);background:var(--sand);border-radius:999px;padding:4px 10px;max-width:60%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.know-card h3{font-size:17.5px;font-weight:600;line-height:1.5;color:var(--ink);margin-bottom:10px;transition:color .2s ease}
.know-card:hover h3{color:var(--clay)}
.know-card p{font-size:14.5px;line-height:1.8;color:var(--ink-2);margin:0 0 14px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.know-meta{font-size:13px;color:var(--ink-3);border-top:1px dashed var(--line);padding-top:10px}
.list-more{text-align:center;margin-top:30px}
.list-empty{background:#fff;border:1px dashed var(--line);border-radius:var(--radius);padding:28px;text-align:center;font-size:14.5px;color:var(--ink-3)}

/* ===== 概念速览 ===== */
.gloss-list{border-top:1px solid var(--line)}
.gloss-row{display:grid;grid-template-columns:200px minmax(0,1fr);gap:24px;padding:22px 0;border-bottom:1px dashed var(--line);min-width:0}
.gloss-term{font-size:17px;font-weight:600;color:var(--pine);line-height:1.6}
.gloss-term small{display:block;font-size:12px;font-weight:400;color:var(--ink-3);letter-spacing:.04em;margin-top:2px}
.gloss-def{min-width:0}
.gloss-def p{font-size:15px;line-height:1.85;color:var(--ink-2);margin:0 0 8px}
.gloss-def a{font-size:14px;font-weight:600;color:var(--pine)}
.gloss-def a:hover{color:var(--clay)}

/* ===== 核对清单 ===== */
.check-list{list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 20px}
.check-item{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;font-size:15px;line-height:1.75;color:var(--ink-2);min-width:0}
.check-box{flex:0 0 auto;width:20px;height:20px;border:1.5px solid var(--moss);border-radius:5px;position:relative;margin-top:4px;background:#fff}
.check-box::after{content:"";position:absolute;left:4px;top:7px;width:9px;height:5px;border-left:2px solid var(--moss);border-bottom:2px solid var(--moss);transform:rotate(-45deg)}

/* ===== 误区对照 ===== */
.mis-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.mis-col{border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;min-width:0}
.mis-col--wrong{background:var(--sand)}
.mis-col--right{background:#fff;box-shadow:var(--shadow-1)}
.mis-col h3{font-size:16px;font-weight:700;margin-bottom:14px;padding-left:12px;position:relative}
.mis-col h3::before{content:"";position:absolute;left:0;top:5px;width:3px;height:14px;border-radius:2px}
.mis-col--wrong h3{color:var(--ink-2)}
.mis-col--wrong h3::before{background:var(--moss)}
.mis-col--right h3{color:var(--pine)}
.mis-col--right h3::before{background:var(--clay)}
.mis-col ul{list-style:none;display:flex;flex-direction:column;gap:12px}
.mis-col li{position:relative;padding-left:16px;font-size:15px;line-height:1.78;color:var(--ink-2);min-width:0}
.mis-col li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%}
.mis-col--wrong li::before{background:var(--moss)}
.mis-col--right li::before{background:var(--clay)}
.faq-mini{margin-top:32px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.faq-mini-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-1);min-width:0}
.faq-mini-item h4{font-size:15.5px;font-weight:600;color:var(--pine);line-height:1.6;margin-bottom:8px}
.faq-mini-item p{font-size:14.5px;line-height:1.78;color:var(--ink-2);margin:0}

/* ===== 下载条 ===== */
.dl-band{background:var(--sand);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:48px 0}
.dl-inner{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.25fr);gap:32px;align-items:center}
.dl-copy h2{font-size:24px;line-height:1.4;font-weight:700;color:var(--ink);padding-left:16px;position:relative;margin-bottom:10px}
.dl-copy h2::before{content:"";position:absolute;left:0;top:6px;width:4px;height:18px;background:var(--clay);border-radius:2px}
.dl-copy p{font-size:15px;line-height:1.8;color:var(--ink-2);max-width:420px;margin:0}
.dl-btns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.dl-btn{display:flex;flex-direction:column;gap:4px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;min-width:0}
.dl-btn strong{font-size:15px;font-weight:600;color:var(--pine);line-height:1.4}
.dl-btn span{font-size:12.5px;color:var(--ink-3);line-height:1.5}
.dl-btn:hover{border-color:var(--clay);box-shadow:var(--shadow-2);transform:translateY(-2px);text-decoration:none}
.dl-btn:hover strong{color:var(--clay)}
.dl-note{grid-column:1 / -1;font-size:12.5px;color:var(--ink-3);line-height:1.6;margin:2px 0 0}

/* ===== 延伸阅读 ===== */
.read-list{list-style:none;border-top:1px solid var(--line)}
.read-item{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;padding:16px 0;border-bottom:1px dashed var(--line);min-width:0}
.read-item a{font-size:15.5px;line-height:1.7;color:var(--ink);min-width:0}
.read-item a:hover{color:var(--clay)}
.read-item .num{flex:0 0 auto;font-size:13px;color:var(--ink-3);padding-top:4px}
.read-empty{padding:18px 0;font-size:14.5px;color:var(--ink-3)}

/* ===== 风险条 ===== */
.risk-bar{background:var(--risk-bg);border-top:1px solid #E7D5C4;padding:18px 0}
.risk-bar p{font-size:14px;line-height:1.75;color:var(--risk-ink);margin:0}

/* ===== 页脚 ===== */
.site-footer{background:var(--pine);color:#E8EDE9;padding-top:56px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:36px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text small{color:#9FB0A6}
.footer-brand p{margin:16px 0 0;font-size:14px;line-height:1.85;color:#C3CEC7;max-width:360px}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col a{color:#C3CEC7;font-size:14px}
.footer-col a:hover{color:#E9A46A;text-decoration:none}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;border-top:1px solid rgba(255,255,255,.14);padding:18px 0;font-size:13px;line-height:1.6;color:#9FB0A6}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .container{padding-left:20px;padding-right:20px}
  .nav-menu .nav-item-link{padding:10px 9px;font-size:14.5px}
}
@media (max-width:991px){
  .section{padding:56px 0}
  .cat-head{padding:32px 0 44px}
  .cat-head-grid{grid-template-columns:1fr;gap:24px}
  .plat-grid{grid-template-columns:1fr;gap:24px}
  .dl-inner{grid-template-columns:1fr;gap:22px}
  .faq-mini{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .topbar-mid{display:none}
  .nav-shell{min-height:64px}
}
@media (max-width:767px){
  .know-grid{grid-template-columns:1fr}
  .check-list{grid-template-columns:1fr}
  .mis-grid{grid-template-columns:1fr}
  .gloss-row{grid-template-columns:1fr;gap:8px;padding:18px 0}
  .dl-btns{grid-template-columns:1fr}
  .section{padding:44px 0}
  .section-head h2{font-size:23px}
  .cat-head h1{font-size:26px}
  .plat-item{grid-template-columns:44px minmax(0,1fr);gap:12px}
}
@media (max-width:575px){
  .container{padding-left:16px;padding-right:16px}
  .topbar-note{display:none}
  .section{padding:38px 0}
  .brand-text small{display:none}
  .nav-actions .btn-ghost{display:none}
  .nav-actions .btn-brand{padding:8px 14px;font-size:13px;min-height:38px}
  .know-card{padding:18px}
  .gloss-term{font-size:16px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:6px}
}