:root{
      --primary:#e8e8e8;
      --primary-dark:#ffffff;
      --bg:#0a0a0a;
      --card:#141414;
      --tint:#1a1a1a;
      --text:#f0f0f0;
      --text-light:#8a8a8a;
      --border:#2a2a2a;
      --radius:14px;
      --shadow:0 6px 20px rgba(0,0,0,.5);
      --shadow-lg:0 10px 30px rgba(0,0,0,.7);
    }
    *{margin:0;padding:0;box-sizing:border-box;}
    html{scroll-behavior:smooth;}
    body{
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
      background:var(--bg);color:var(--text);line-height:1.6;
      -webkit-font-smoothing:antialiased;
    }
    body.hg-locked{overflow:hidden;}
    img{max-width:100%;display:block;}
    a{color:inherit;}
    .hg-shell{max-width:1100px;margin:0 auto;padding:0 20px;}

    .hg-topbar{background:var(--card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;}
    .hg-bar{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px;}
    .hg-brand{display:flex;align-items:center;gap:10px;text-decoration:none;}
    .hg-brand img{width:40px;height:40px;border-radius:10px;object-fit:cover;background:#2a2a2a;}
    .hg-brand-copy{display:flex;flex-direction:column;line-height:1.2;}
    .hg-brand-copy strong{font-size:15px;color:var(--text);}
    .hg-brand-copy small{font-size:11px;color:var(--text-light);}
    .hg-topic-tabs-inner--bar{display:flex;gap:20px;list-style:none;}
    .hg-topic-tabs-inner--bar a{text-decoration:none;color:var(--text-light);font-size:14px;transition:color .2s;}
    .hg-topic-tabs-inner--bar a:hover{color:var(--text);}
    .hg-nav-actions{display:flex;gap:8px;}
    .hg-icon-btn{background:none;border:1px solid var(--border);border-radius:10px;padding:6px 10px;cursor:pointer;display:flex;align-items:center;gap:4px;font-size:13px;color:var(--text-light);transition:all .2s;}
    .hg-icon-btn:hover{border-color:var(--text);color:var(--text);}
    .hg-icon-btn b{font-size:15px;font-weight:400;}
    .hg-jelly{display:inline-block;background:var(--text);color:#0a0a0a;padding:10px 22px;border-radius:24px;text-decoration:none;font-weight:600;font-size:14px;border:none;cursor:pointer;transition:background .2s, transform .15s;white-space:nowrap;}
    .hg-jelly:hover{background:var(--primary-dark);transform:translateY(-1px);}
    .hg-jelly--sm{padding:8px 18px;font-size:13px;}
    .hg-jelly--lg{padding:14px 32px;font-size:16px;display:block;text-align:center;margin-bottom:10px;}
    .hg-jelly--alt{background:transparent;color:var(--text);border:1px solid var(--border);}
    .hg-jelly--alt:hover{background:#1f1f1f;border-color:var(--text);}
    .hg-pill{display:inline-block;background:transparent;color:var(--text);border:1px solid var(--border);padding:10px 22px;border-radius:24px;text-decoration:none;font-size:14px;font-weight:500;transition:all .2s;}
    .hg-pill:hover{border-color:var(--text);color:var(--text);}

    .hg-sec{padding:56px 0;}
    .hg-sec--tint{background:var(--tint);}
    .hg-head{text-align:center;margin-bottom:40px;}
    .hg-eyebrow{font-size:13px;color:var(--text-light);font-weight:600;letter-spacing:1px;margin-bottom:10px;}
    .hg-title{font-size:26px;font-weight:700;margin-bottom:10px;letter-spacing:-0.3px;color:var(--text);}
    .hg-desc{color:var(--text-light);font-size:15px;max-width:640px;margin:0 auto;}
    .hg-more{display:inline-block;margin-top:24px;color:var(--text);text-decoration:none;font-size:14px;font-weight:500;}
    .hg-more:hover{text-decoration:underline;}

    .hg-guide-hero{background:linear-gradient(135deg,#141414 0%,var(--bg) 100%);padding:48px 0 32px;}
    .hg-guide-hero .hg-head{text-align:left;margin-bottom:0;}
    .hg-guide-hero .hg-title{font-size:32px;}
    .hg-guide-note{font-size:13px;color:var(--text-light);background:var(--tint);padding:12px 20px;border-radius:12px;margin-top:24px;display:inline-block;border:1px solid var(--border);}

    .hg-guide-steps{list-style:none;display:flex;flex-direction:column;gap:20px;max-width:720px;margin:0 auto;}
    .hg-guide-step{display:flex;gap:18px;align-items:flex-start;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;}
    .hg-guide-no{width:36px;height:36px;border-radius:50%;background:var(--text);color:#0a0a0a;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;flex-shrink:0;}
    .hg-guide-step h3{font-size:17px;margin-bottom:6px;color:var(--text);}
    .hg-guide-step p{font-size:14px;color:var(--text-light);}

    .hg-scene-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;}
    .hg-scene-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;}
    .hg-scene-card h3{font-size:16px;margin-bottom:10px;color:var(--text);}
    .hg-scene-card p{font-size:13px;color:var(--text-light);line-height:1.7;}

    .hg-compare{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:720px;margin:0 auto;}
    .hg-compare-col{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;}
    .hg-compare-col h3{font-size:16px;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--border);color:var(--text);}
    .hg-compare-col ul{list-style:none;display:flex;flex-direction:column;gap:10px;}
    .hg-compare-col li{font-size:14px;color:var(--text-light);display:flex;gap:8px;}
    .hg-compare-col li::before{content:"·";color:var(--text);font-weight:700;}

    /* ===== 新增板块样式 ===== */
    .hg-mood-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;list-style:none;}
    .hg-mood-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;display:flex;gap:14px;align-items:flex-start;}
    .hg-mood-icon{width:42px;height:42px;border-radius:12px;background:#1f1f1f;color:var(--text);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0;}
    .hg-mood-body{flex:1;}
    .hg-mood-body strong{display:block;font-size:14px;margin-bottom:4px;color:var(--text);}
    .hg-mood-body p{font-size:12px;color:var(--text-light);line-height:1.6;}
    .hg-mood-tip{font-size:11px;color:var(--text);font-weight:600;margin-top:6px;display:block;}

    .hg-device-list{list-style:none;display:flex;flex-direction:column;gap:10px;}
    .hg-device-item{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px 18px;display:flex;gap:14px;align-items:center;}
    .hg-device-badge{font-size:11px;padding:3px 10px;border-radius:8px;background:#2a2a2a;color:var(--text);white-space:nowrap;font-weight:600;flex-shrink:0;}
    .hg-device-body{flex:1;}
    .hg-device-body strong{display:block;font-size:14px;margin-bottom:2px;color:var(--text);}
    .hg-device-body p{font-size:12px;color:var(--text-light);}

    .hg-feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;list-style:none;}
    .hg-feature-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;text-align:center;}
    .hg-feature-icon{width:44px;height:44px;border-radius:50%;background:#1f1f1f;color:var(--text);display:flex;align-items:center;justify-content:center;font-size:20px;margin:0 auto 12px;}
    .hg-feature-card strong{display:block;font-size:14px;margin-bottom:6px;color:var(--text);}
    .hg-feature-card p{font-size:13px;color:var(--text-light);line-height:1.6;}

    .hg-quote-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;list-style:none;}
    .hg-quote-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;}
    .hg-quote-user{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
    .hg-quote-avatar{width:36px;height:36px;border-radius:50%;background:#2a2a2a;color:var(--text);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;flex-shrink:0;}
    .hg-quote-user strong{font-size:14px;display:block;color:var(--text);}
    .hg-quote-user em{font-size:12px;color:var(--text-light);font-style:normal;}
    .hg-quote-text{font-size:14px;color:var(--text-light);line-height:1.7;}

    .hg-stat-band{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px;text-align:center;}
    .hg-stat-cell{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px 16px;}
    .hg-stat-value{font-size:26px;font-weight:800;color:var(--text);display:block;margin-bottom:6px;}
    .hg-stat-label{font-size:13px;color:var(--text-light);}

    .hg-faq-box{list-style:none;max-width:760px;margin:0 auto;}
    .hg-faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px 22px;margin-bottom:12px;}
    .hg-faq-q{font-size:15px;font-weight:600;display:flex;align-items:center;gap:10px;margin-bottom:8px;color:var(--text);}
    .hg-faq-mark{width:24px;height:24px;border-radius:50%;background:#2a2a2a;color:var(--text);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex-shrink:0;}
    .hg-faq-a{font-size:14px;color:var(--text-light);line-height:1.7;padding-left:34px;}

    .hg-footer{background:var(--card);border-top:1px solid var(--border);padding:50px 0 30px;}
    .hg-footer-top{display:grid;grid-template-columns:1.2fr 2fr 1fr;gap:40px;margin-bottom:36px;}
    .hg-footer-brand p{font-size:13px;color:var(--text-light);margin-top:14px;line-height:1.7;}
    .hg-footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
    .hg-footer-col h3{font-size:14px;margin-bottom:14px;color:var(--text);}
    .hg-footer-col a{display:block;font-size:13px;color:var(--text-light);text-decoration:none;margin-bottom:8px;transition:color .2s;}
    .hg-footer-col a:hover{color:var(--text);}
    .hg-footer-contact p{font-size:13px;color:var(--text-light);margin-bottom:8px;}
    .hg-footer-tags{display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding:20px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);margin-bottom:20px;font-size:13px;}
    .hg-footer-tags strong{color:var(--text);margin-right:6px;}
    .hg-footer-tags span{background:var(--tint);color:var(--text-light);padding:4px 12px;border-radius:14px;font-size:12px;}
    .hg-footer-legal{display:flex;flex-wrap:wrap;gap:16px;font-size:12px;color:var(--text-light);}
    .hg-footer-legal a{color:var(--text-light);text-decoration:none;}
    .hg-footer-legal a:hover{color:var(--text);}
    .hg-switch-ver{font-size:12px;color:var(--text-light);text-decoration:none;margin-left:8px;}
    .hg-switch-ver:hover{color:var(--text);}

    @media(max-width:900px){
      .hg-footer-top{grid-template-columns:1fr;gap:28px;}
      .hg-footer-groups{grid-template-columns:repeat(2,1fr);}
      .hg-topic-tabs-inner--bar{display:none;}
      .hg-guide-hero .hg-title{font-size:26px;}
    }
    @media(max-width:640px){
      .hg-sec{padding:40px 0;}
      .hg-title{font-size:22px;}
      .hg-nav-actions .hg-icon-btn span{display:none;}
      .hg-footer-groups{grid-template-columns:1fr;}
      .hg-compare{grid-template-columns:1fr;}
      .hg-guide-step{flex-direction:column;gap:12px;}
    }