/* =========================================================
   涛哥黄金科普 - 模板样式 (taogejin2026)
   清新金奢 · 权威科普风格
   ========================================================= */
:root{
  --gold:#c8a24a;
  --gold-deep:#a8842f;
  --gold-2:#b8862f;
  --gold-soft:#f6ecd2;
  --gold-tint:#fbf3df;
  --ink:#241c12;
  --ink-2:#4f4636;
  --muted:#8a7d6a;
  --bg:#fbf7ee;
  --bg-2:#fffdf8;
  --card:#ffffff;
  --line:#ece3d0;
  --up:#d4392b;     /* 涨 - 红 */
  --down:#1f9d5b;   /* 跌 - 绿 */
  --shadow:0 10px 30px rgba(60,45,20,.08);
  --shadow-sm:0 4px 14px rgba(60,45,20,.06);
  --radius:16px;
  --maxw:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;font-size:15px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul,ol{list-style:none}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
section{padding:64px 0}
.gold-text{color:var(--gold-deep)}

/* ---------- 顶部公告条 ---------- */
.topbar{background:linear-gradient(90deg,var(--ink),#3a2c18);color:#f3e6c4;font-size:13px;text-align:center;padding:7px 12px;letter-spacing:.5px}
.topbar b{color:var(--gold)}

/* ---------- 导航 ---------- */
.navbar{position:sticky;top:0;z-index:50;background:rgba(255,253,248,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);box-shadow:0 2px 16px rgba(60,45,20,.04)}
.nav-container{max-width:var(--maxw);margin:0 auto;padding:0 20px;height:66px;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:9px;font-size:20px;font-weight:800;color:var(--ink);letter-spacing:.5px}
.logo-mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--gold),var(--gold-deep));
  display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 4px 12px rgba(200,162,74,.4)}
.logo-mark svg{width:20px;height:20px}
.logo-badge{font-size:11px;font-weight:700;color:var(--gold-deep);border:1px solid var(--gold);padding:1px 6px;border-radius:6px;margin-left:4px;vertical-align:middle}
.nav-menu{display:flex;gap:26px;align-items:center}
.nav-menu a{font-size:15px;color:var(--ink-2);font-weight:500;transition:.2s;position:relative;padding:4px 0}
.nav-menu a:hover{color:var(--gold-deep)}
.nav-menu a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--gold);transition:.25s}
.nav-menu a:hover::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-cta{background:linear-gradient(135deg,var(--gold),var(--gold-deep));color:#fff;font-weight:700;
  padding:9px 18px;border-radius:30px;font-size:14px;box-shadow:0 6px 16px rgba(200,162,74,.35);transition:.2s}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(200,162,74,.45)}
.mobile-menu-btn{display:none;background:none;border:none;font-size:24px;color:var(--ink);cursor:pointer}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:88px 0 76px;
  background:
    radial-gradient(900px 420px at 78% -10%,rgba(200,162,74,.18),transparent 60%),
    radial-gradient(700px 360px at 10% 110%,rgba(184,134,47,.12),transparent 60%),
    linear-gradient(180deg,var(--bg-2),var(--bg))}
.hero-grid{display:grid;grid-template-columns:1.25fr .85fr;gap:48px;align-items:center}
.hero-tag{display:inline-block;font-size:13px;font-weight:700;letter-spacing:2px;color:var(--gold-deep);
  background:var(--gold-tint);border:1px solid var(--gold-soft);padding:5px 14px;border-radius:30px;margin-bottom:18px}
.hero h1{font-size:46px;line-height:1.18;font-weight:800;letter-spacing:.5px;margin-bottom:18px}
.hero h1 .hl{background:linear-gradient(120deg,var(--gold),var(--gold-deep));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:17px;color:var(--ink-2);margin-bottom:28px;max-width:560px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:30px}
.btn-primary{background:linear-gradient(135deg,var(--gold),var(--gold-deep));color:#fff;font-weight:700;
  padding:14px 28px;border-radius:30px;box-shadow:0 8px 20px rgba(200,162,74,.35);transition:.2s;display:inline-flex;align-items:center;gap:8px}
.btn-primary:hover{transform:translateY(-2px)}
.btn-ghost{border:1.5px solid var(--gold);color:var(--gold-deep);font-weight:700;padding:13px 26px;border-radius:30px;transition:.2s;display:inline-flex;align-items:center;gap:8px}
.btn-ghost:hover{background:var(--gold-tint)}
.hero-stats{display:flex;gap:30px;flex-wrap:wrap}
.hero-stats .st b{display:block;font-size:26px;font-weight:800;color:var(--gold-deep)}
.hero-stats .st span{font-size:13px;color:var(--muted)}

/* 金价卡 */
.price-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:var(--shadow)}
.price-card .pc-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.price-card .pc-head h3{font-size:17px;font-weight:800}
.price-card .pc-live{font-size:12px;color:var(--down);display:flex;align-items:center;gap:5px}
.price-card .pc-live::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--down);box-shadow:0 0 0 3px rgba(31,157,91,.18)}
.price-row{display:flex;justify-content:space-between;align-items:center;padding:11px 0;border-bottom:1px dashed var(--line)}
.price-row:last-child{border-bottom:none}
.price-row .pr-name{color:var(--ink-2);font-size:14px}
.price-row .pr-val{font-weight:800;font-size:16px}
.price-row .pr-chg{font-size:12px;font-weight:700;margin-left:8px}
.pr-chg.up{color:var(--up)} .pr-chg.down{color:var(--down)}
.price-note{margin-top:14px;font-size:12px;color:var(--muted);line-height:1.5}

/* ---------- 区块标题 ---------- */
.section-head{text-align:center;max-width:720px;margin:0 auto 44px}
.section-tag{font-size:13px;font-weight:700;letter-spacing:3px;color:var(--gold-deep);margin-bottom:10px}
.section-title{font-size:32px;font-weight:800;letter-spacing:.5px}
.section-title .accent{color:var(--gold-deep);position:relative}
.section-title .accent::after{content:"";position:absolute;left:0;bottom:2px;width:100%;height:8px;background:var(--gold-soft);z-index:-1;border-radius:4px}
.section-sub{margin-top:12px;color:var(--muted);font-size:15px}

/* ---------- 分类网格 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cat-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  transition:.25s;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}
.cat-card::before{content:"";position:absolute;right:-30px;top:-30px;width:120px;height:120px;border-radius:50%;
  background:radial-gradient(circle,var(--gold-tint),transparent 70%);opacity:0;transition:.3s}
.cat-card:hover{transform:translateY(-6px);border-color:var(--gold);box-shadow:var(--shadow)}
.cat-card:hover::before{opacity:1}
.cat-ico{width:52px;height:52px;border-radius:14px;background:var(--gold-tint);display:flex;align-items:center;justify-content:center;
  color:var(--gold-deep);margin-bottom:16px;font-size:24px}
.cat-card h3{font-size:19px;font-weight:800;margin-bottom:8px}
.cat-card p{color:var(--muted);font-size:14px;margin-bottom:14px;min-height:42px}
.cat-card .cat-link{font-size:14px;font-weight:700;color:var(--gold-deep);display:inline-flex;align-items:center;gap:6px}
.cat-card .cat-link:hover{gap:10px}

/* ---------- 知识模块 ---------- */
.know-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.know-card{background:linear-gradient(160deg,var(--card),var(--bg-2));border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;box-shadow:var(--shadow-sm);transition:.25s}
.know-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.know-num{font-size:14px;font-weight:800;color:var(--gold);letter-spacing:1px}
.know-card h3{font-size:20px;font-weight:800;margin:10px 0 12px;display:flex;align-items:center;gap:10px}
.know-card h3 svg{width:24px;height:24px;color:var(--gold-deep)}
.know-card ul{margin-top:6px}
.know-card li{position:relative;padding-left:18px;color:var(--ink-2);font-size:14px;margin-bottom:8px}
.know-card li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--gold)}

/* ---------- 入门步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;position:relative;box-shadow:var(--shadow-sm)}
.step .step-no{position:absolute;right:18px;top:14px;font-size:46px;font-weight:800;color:var(--gold-soft);line-height:1}
.step .step-ico{width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,var(--gold),var(--gold-deep));
  color:#fff;display:flex;align-items:center;justify-content:center;margin-bottom:14px;font-weight:800;font-size:18px}
.step h3{font-size:17px;font-weight:800;margin-bottom:8px}
.step p{color:var(--muted);font-size:14px}

/* ---------- 热门专题 ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.topic-card{display:flex;gap:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  box-shadow:var(--shadow-sm);transition:.25s;align-items:flex-start}
.topic-card:hover{transform:translateY(-4px);border-color:var(--gold);box-shadow:var(--shadow)}
.topic-badge{flex:0 0 64px;height:64px;border-radius:14px;background:var(--gold-tint);color:var(--gold-deep);
  display:flex;align-items:center;justify-content:center;font-size:28px}
.topic-card h3{font-size:17px;font-weight:800;margin-bottom:6px}
.topic-card p{color:var(--muted);font-size:13.5px}

/* ---------- 最新词条 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow-sm);transition:.25s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.news-thumb{height:160px;background:linear-gradient(135deg,var(--gold-tint),#fff);display:flex;align-items:center;justify-content:center;color:var(--gold)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body{padding:18px 20px 22px;flex:1;display:flex;flex-direction:column}
.news-body .news-cat{font-size:12px;font-weight:700;color:var(--gold-deep);margin-bottom:8px}
.news-body h3{font-size:16.5px;font-weight:700;line-height:1.4;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{color:var(--muted);font-size:13.5px;flex:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:14px;font-size:12.5px;color:var(--muted);display:flex;gap:14px;border-top:1px solid var(--line);padding-top:12px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:840px;margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden;transition:.2s}
.faq-item.open{border-color:var(--gold);box-shadow:var(--shadow-sm)}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;cursor:pointer;font-weight:700;font-size:16px}
.faq-q .faq-ico{flex:0 0 26px;height:26px;border-radius:50%;background:var(--gold-tint);color:var(--gold-deep);
  display:flex;align-items:center;justify-content:center;transition:.25s;font-size:18px}
.faq-item.open .faq-ico{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 22px;color:var(--ink-2);font-size:14.5px}
.faq-item.open .faq-a{max-height:400px;padding:0 22px 20px}

/* ---------- 联系 ---------- */
.contact{background:linear-gradient(135deg,#2a2014,#3c2c18);color:#f3e6c4;border-radius:24px;padding:48px;
  display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center;box-shadow:var(--shadow)}
.contact h2{font-size:28px;font-weight:800;color:#fff;margin-bottom:14px}
.contact p{color:#d9c9a0;margin-bottom:22px;max-width:460px}
.contact .c-phone{display:inline-flex;align-items:center;gap:12px;background:rgba(200,162,74,.16);border:1px solid var(--gold);
  padding:14px 24px;border-radius:14px;margin-bottom:14px}
.contact .c-phone b{font-size:26px;color:var(--gold);letter-spacing:1px}
.contact .c-sub{font-size:13px;color:#bda878}
.contact-form{background:rgba(255,255,255,.06);border:1px solid rgba(200,162,74,.3);border-radius:16px;padding:24px}
.contact-form .cf-row{display:flex;gap:12px;margin-bottom:12px}
.contact-form input,.contact-form textarea{width:100%;background:rgba(255,255,255,.1);border:1px solid rgba(200,162,74,.3);
  border-radius:10px;padding:11px 14px;color:#fff;font-size:14px;font-family:inherit}
.contact-form input::placeholder,.contact-form textarea::placeholder{color:#bda878}
.contact-form textarea{resize:vertical;min-height:80px}
.contact-form button{width:100%;background:linear-gradient(135deg,var(--gold),var(--gold-deep));color:#fff;font-weight:700;
  border:none;padding:13px;border-radius:10px;cursor:pointer;font-size:15px;transition:.2s}
.contact-form button:hover{transform:translateY(-2px)}

/* ---------- 页脚 ---------- */
.footer{background:#1c160e;color:#b9a87f;padding:56px 0 26px;margin-top:30px}
.footer-content{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.footer h4{color:var(--gold);font-size:15px;font-weight:800;margin-bottom:16px}
.footer p{font-size:13.5px;line-height:1.8}
.footer ul li{margin-bottom:9px}
.footer ul li a{font-size:13.5px;color:#b9a87f;transition:.2s}
.footer ul li a:hover{color:var(--gold)}
.footer-brand .fb-logo{display:flex;align-items:center;gap:9px;font-size:19px;font-weight:800;color:#fff;margin-bottom:12px}
.footer-friendlink{max-width:var(--maxw);margin:34px auto 0;padding:22px 20px 0;border-top:1px solid rgba(200,162,74,.18)}
.footer-friendlink h4{color:var(--gold);font-size:14px;margin-bottom:12px}
.friendlink-list{display:flex;flex-wrap:wrap;gap:10px 20px}
.friendlink-list a{font-size:13px;color:#9c8c66}
.footer-bottom{max-width:var(--maxw);margin:24px auto 0;padding:18px 20px 0;border-top:1px solid rgba(200,162,74,.12);
  text-align:center;font-size:13px;color:#8a7a55;line-height:1.9}

/* ---------- 悬浮电话 ---------- */
.float-phone{position:fixed;right:22px;bottom:26px;z-index:60;width:54px;height:54px;border-radius:50%;
  background:linear-gradient(135deg,var(--gold),var(--gold-deep));color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 24px rgba(200,162,74,.5);transition:.2s}
.float-phone:hover{transform:scale(1.08)}
.float-phone svg{width:24px;height:24px}
.float-tooltip{position:absolute;right:64px;top:50%;transform:translateY(-50%);background:#1c160e;color:#f3e6c4;
  white-space:nowrap;padding:6px 12px;border-radius:8px;font-size:13px;opacity:0;pointer-events:none;transition:.2s}
.float-phone:hover .float-tooltip{opacity:1}

/* ---------- 列表页 ---------- */
.list-hero{background:linear-gradient(135deg,#2a2014,#3c2c18);color:#f3e6c4;border-radius:20px;padding:40px 36px;margin-bottom:26px;
  box-shadow:var(--shadow)}
.list-hero .lh-tag{font-size:13px;font-weight:700;letter-spacing:2px;color:var(--gold);margin-bottom:10px}
.list-hero h1{font-size:32px;font-weight:800;color:#fff;margin-bottom:8px}
.list-hero p{color:#d9c9a0;font-size:14.5px}
.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:18px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--gold-deep)}
.breadcrumb .current{color:var(--ink)}
.filter-bar-wrap{margin-bottom:24px}
.filter-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;background:var(--card);border:1px solid var(--line);
  border-radius:14px;padding:14px 18px;box-shadow:var(--shadow-sm)}
.filter-label{font-weight:700;color:var(--ink-2);font-size:14px}
.filter-bar a{font-size:14px;color:var(--ink-2);padding:6px 14px;border-radius:20px;background:var(--bg);border:1px solid var(--line);transition:.2s}
.filter-bar a:hover{background:var(--gold-tint);color:var(--gold-deep);border-color:var(--gold)}
.list-layout{display:grid;grid-template-columns:1fr 320px;gap:28px;align-items:start}
.article-list{display:flex;flex-direction:column;gap:18px}
.article-card{display:flex;gap:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;box-shadow:var(--shadow-sm);transition:.25s}
.article-card:hover{transform:translateY(-3px);border-color:var(--gold);box-shadow:var(--shadow)}
.article-card .thumb{flex:0 0 180px;height:120px;border-radius:12px;overflow:hidden;background:linear-gradient(135deg,var(--gold-tint),#fff);
  display:flex;align-items:center;justify-content:center;color:var(--gold)}
.article-card .thumb img{width:100%;height:100%;object-fit:cover}
.article-card .content{flex:1;display:flex;flex-direction:column}
.article-card h3{font-size:18px;font-weight:700;line-height:1.4;margin-bottom:8px}
.article-card h3 a:hover{color:var(--gold-deep)}
.article-card .desc{color:var(--muted);font-size:14px;margin-bottom:12px;flex:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.article-card .meta{display:flex;gap:14px;align-items:center;font-size:12.5px;color:var(--muted)}
.cat-tag{background:var(--gold-tint);color:var(--gold-deep);padding:2px 9px;border-radius:6px;font-weight:700}
.read-more{color:var(--gold-deep);font-weight:700;font-size:13.5px}
.read-more:hover{text-decoration:underline}
.pagination-wrap{margin-top:28px;display:flex;justify-content:center}
.pagination-wrap a,.pagination-wrap span{display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:38px;
  padding:0 12px;margin:0 4px;border-radius:10px;background:var(--card);border:1px solid var(--line);font-size:14px;color:var(--ink-2);transition:.2s}
.pagination-wrap a:hover{background:var(--gold-tint);color:var(--gold-deep);border-color:var(--gold)}
.pagination-wrap .current{background:linear-gradient(135deg,var(--gold),var(--gold-deep));color:#fff;border-color:transparent}

/* 侧栏 */
.sidebar{display:flex;flex-direction:column;gap:20px;position:sticky;top:86px}
.sidebar-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm)}
.sidebar-card h4{font-size:16px;font-weight:800;margin-bottom:14px;padding-left:12px;border-left:4px solid var(--gold)}
.sidebar-contact{background:linear-gradient(160deg,#2a2014,#3c2c18);color:#f3e6c4;border:none}
.sidebar-contact .sc-tag{font-size:12px;font-weight:700;letter-spacing:2px;color:var(--gold);margin-bottom:8px}
.sidebar-contact h4{color:#fff;border:none;padding:0;margin-bottom:8px}
.sidebar-contact p{font-size:13px;color:#d9c9a0;margin-bottom:14px}
.phone-btn{display:block;text-align:center;background:linear-gradient(135deg,var(--gold),var(--gold-deep));color:#fff;
  font-weight:800;font-size:20px;padding:11px;border-radius:12px;letter-spacing:1px}
.sidebar-list li{margin-bottom:11px}
.sidebar-list li a{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--ink-2);transition:.2s}
.sidebar-list li a:hover{color:var(--gold-deep)}
.sidebar-list .num{flex:0 0 22px;height:22px;border-radius:6px;background:var(--gold-tint);color:var(--gold-deep);
  font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-top:1px}

/* 详情页 */
.detail-page{padding:30px 0 50px}
.detail-container{max-width:880px;margin:0 auto;padding:0 20px}
.detail-breadcrumb{font-size:14px;color:var(--muted);margin-bottom:20px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.detail-breadcrumb a:hover{color:var(--gold-deep)}
.detail-header{margin-bottom:22px}
.detail-header h1{font-size:30px;font-weight:800;line-height:1.35;margin-bottom:14px}
.detail-meta{display:flex;gap:16px;align-items:center;font-size:13.5px;color:var(--muted);flex-wrap:wrap}
.detail-content{font-size:16px;line-height:1.95;color:var(--ink-2)}
.detail-content p{margin-bottom:18px}
.detail-content img{max-width:100%;border-radius:12px;margin:14px 0}
.detail-content h2,.detail-content h3{margin:26px 0 12px;color:var(--ink)}
.detail-content h2{font-size:22px;font-weight:800} .detail-content h3{font-size:19px;font-weight:800}
.detail-content ul,.detail-content ol{margin:0 0 18px 22px}
.detail-content li{margin-bottom:8px;list-style:disc}
.detail-tags{margin-top:26px;padding-top:18px;border-top:1px solid var(--line);display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.detail-tags .tag-label{font-weight:700;color:var(--ink-2)}
.detail-tags a{background:var(--gold-tint);color:var(--gold-deep);padding:5px 13px;border-radius:20px;font-size:13px}
.detail-tags a:hover{background:var(--gold-soft)}
.detail-related{margin-top:34px}
.detail-related h3{font-size:18px;font-weight:800;margin-bottom:16px;padding-left:12px;border-left:4px solid var(--gold)}
.detail-related-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.related-item{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:13px 16px;transition:.2s}
.related-item:hover{border-color:var(--gold);background:var(--bg-2)}
.related-item a{font-size:14.5px;font-weight:600;display:block;margin-bottom:5px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-item .date{font-size:12px;color:var(--muted)}
.detail-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:30px}
.detail-nav-item{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 20px}
.detail-nav-item.next{text-align:right}
.detail-nav .nav-label{font-size:13px;color:var(--muted);margin-bottom:6px}
.detail-nav-item a{font-weight:700;color:var(--gold-deep)}
.detail-contact{margin-top:34px;background:linear-gradient(135deg,#2a2014,#3c2c18);color:#f3e6c4;border-radius:16px;padding:28px;text-align:center}
.detail-contact h3{color:#fff;font-size:20px;margin-bottom:8px}
.detail-contact p{color:#d9c9a0;font-size:14px;margin-bottom:16px}
.detail-contact .btn-primary{font-size:16px}

/* ---------- 响应式 ---------- */
@media(max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .cat-grid,.know-grid,.steps,.news-grid{grid-template-columns:repeat(2,1fr)}
  .topic-grid,.list-layout,.contact{grid-template-columns:1fr}
  .footer-content{grid-template-columns:1fr 1fr}
  .sidebar{position:static}
  .detail-related-list,.detail-nav{grid-template-columns:1fr}
}
@media(max-width:640px){
  .nav-menu{display:none}
  .mobile-menu-btn{display:block}
  .nav-menu.open{display:flex;position:absolute;top:66px;left:0;right:0;flex-direction:column;background:var(--bg-2);
    padding:16px 20px;border-bottom:1px solid var(--line);gap:14px}
  .hero h1{font-size:32px}
  .section-title{font-size:25px}
  section{padding:46px 0}
  .cat-grid,.know-grid,.steps,.news-grid{grid-template-columns:1fr}
  .footer-content{grid-template-columns:1fr}
  .article-card{flex-direction:column}
  .article-card .thumb{flex:0 0 160px;width:100%}
  .contact{padding:30px 22px}
  .list-hero{padding:28px 22px}
}
.nav-menu.open{display:flex}