/* roulang page: index */
:root{
  --primary:#0E7C7B;
  --primary-dark:#0A5B5A;
  --primary-light:#E3F2F1;
  --accent:#E8833A;
  --accent-dark:#D26D24;
  --accent-light:#FCE8DB;
  --bg:#F6F4F0;
  --card:#FFFFFF;
  --text:#1B2928;
  --text-body:#4A5655;
  --text-muted:#8A9391;
  --border:#E5E0DA;
  --success:#2F9E62;
  --danger:#D64541;
  --radius-sm:8px;
  --radius:12px;
  --radius-lg:16px;
  --shadow-sm:0 2px 8px rgba(27,41,40,.05);
  --shadow-hover:0 10px 24px rgba(27,41,40,.10);
  --shadow-lg:0 12px 32px rgba(27,41,40,.12);
  --transition:.2s ease;
  --section-space:80px;
  --font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-family);
  font-size:16px;
  line-height:1.78;
  color:var(--text-body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--primary-dark)}
p{margin:0 0 1em}
h1,h2,h3,h4,h5,h6{margin:0 0 .5em;color:var(--text);line-height:1.35;font-weight:700}
h1{font-size:42px;line-height:1.25}
h2{font-size:30px;line-height:1.3;margin-bottom:12px}
h3{font-size:20px;line-height:1.4}
h4{font-size:16px;line-height:1.4}
ul{padding:0;margin:0;list-style:none}
img{max-width:100%;display:block}
input,select,textarea,button{font-family:inherit}
::selection{background:rgba(232,131,58,.25)}

.btn{
  border-radius:var(--radius-sm);
  font-weight:600;
  padding:11px 24px;
  border:1px solid transparent;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  transition:background var(--transition),color var(--transition),border-color var(--transition),box-shadow var(--transition),transform var(--transition);
}
.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-primary:hover,.btn-primary:focus{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;box-shadow:0 6px 16px rgba(210,109,36,.22);transform:translateY(-1px)}
.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary);border-color:var(--primary);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.65);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff}
.btn-lg{padding:14px 34px;font-size:17px;border-radius:10px}
.btn-sm{padding:8px 16px;font-size:14px;border-radius:8px}
.btn-block{width:100%;display:flex}
.form-control{height:46px;border:1px solid var(--border);border-radius:var(--radius-sm);padding:0 14px;font-size:15px;color:var(--text);background:#fff;transition:border-color var(--transition),box-shadow var(--transition)}
.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(14,124,123,.12);outline:none}
textarea.form-control{height:auto;padding:12px 14px;resize:vertical;line-height:1.6}
select.form-control{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238A9391' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(14,124,123,.35);outline-offset:2px}

.container{max-width:1200px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto}

.site-header{position:sticky;top:0;z-index:1050;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;gap:22px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;color:var(--primary)}
.logo:hover{color:var(--primary)}
.logo-mark{width:20px;height:20px;border-radius:6px;background:var(--primary);display:inline-flex;align-items:center;justify-content:center;position:relative;flex-shrink:0}
.logo-mark::after{content:"";width:9px;height:9px;background:var(--accent);transform:rotate(45deg);border-radius:2px;display:block}
.logo-text{font-size:24px;font-weight:700;letter-spacing:.5px;line-height:1}
.logo-light .logo-mark{background:rgba(255,255,255,.2)}
.logo-light{color:#fff}
.logo-light:hover{color:#fff}
.search-wrap{flex:1;display:flex;align-items:center;gap:10px;max-width:520px;height:44px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:0 16px;margin:0 auto;transition:border-color var(--transition),box-shadow var(--transition)}
.search-wrap:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(14,124,123,.12)}
.search-wrap .fa-magnifying-glass{color:var(--text-muted);font-size:15px;flex-shrink:0}
.search-wrap input{border:none;outline:none;background:transparent;flex:1;font-size:15px;color:var(--text);min-width:0}
.search-wrap input::placeholder{color:var(--text-muted)}
.main-nav ul{display:flex;align-items:center;gap:4px;margin:0}
.main-nav a{display:block;padding:9px 16px;border-radius:var(--radius-sm);color:var(--text-body);font-size:15px;font-weight:500;white-space:nowrap}
.main-nav a:hover{color:var(--primary);background:var(--primary-light)}
.main-nav .active a{color:var(--primary);background:var(--primary-light);font-weight:600}
.nav-cta{flex-shrink:0;margin-left:6px}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--text);font-size:17px;align-items:center;justify-content:center;cursor:pointer}
.nav-toggle:hover{color:var(--primary);border-color:var(--primary)}
.mobile-cta{display:none}

section{padding:var(--section-space) 0}
section[id]{scroll-margin-top:90px}
.section-head{margin-bottom:40px;text-align:center}
.section-head h2{margin-bottom:8px}
.section-sub{color:var(--text-muted);font-size:16px;max-width:540px;margin:0 auto}
.section-head.with-link{display:flex;align-items:flex-end;justify-content:space-between;text-align:left;gap:20px;margin-bottom:32px}
.section-head.with-link .section-sub{margin:0}
.more-link{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-weight:600;font-size:15px;border:1px solid var(--accent);border-radius:999px;padding:8px 18px;transition:background var(--transition),color var(--transition)}
.more-link:hover{background:var(--accent);color:#fff}

.hero{position:relative;padding:100px 0 110px;color:#fff;overflow:hidden;background:var(--primary-dark)}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center 30%}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(160deg,rgba(27,41,40,.58) 0%,rgba(27,41,40,.35) 60%,rgba(27,41,40,.18) 100%)}
.hero-content{position:relative;text-align:center;max-width:760px;margin:0 auto}
.hero h1{color:#fff;font-size:44px;font-weight:700;line-height:1.25;margin:0 0 18px;letter-spacing:1px}
.hero-sub{font-size:19px;color:rgba(255,255,255,.9);margin:0 0 32px;line-height:1.7}
.hero-actions{display:flex;justify-content:center;gap:16px;margin-bottom:36px}
.hero-search{max-width:480px;margin:0 auto;display:flex;align-items:center;gap:10px;height:50px;background:rgba(255,255,255,.96);border-radius:var(--radius);padding:0 18px;box-shadow:0 8px 24px rgba(0,0,0,.16)}
.hero-search .fa-magnifying-glass{color:var(--text-muted);font-size:16px}
.hero-search input{flex:1;border:none;outline:none;background:transparent;font-size:15px;color:var(--text);min-width:0}
.hero-search input::placeholder{color:var(--text-muted)}

.trust-bar{background:#fff;border-bottom:1px solid var(--border);padding:22px 0}
.trust-list{display:flex;justify-content:center;gap:56px;flex-wrap:wrap;align-items:center}
.trust-item{display:flex;align-items:baseline;gap:8px;color:var(--text-muted);font-size:14px}
.trust-item .num{font-size:26px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1.2}

.plans{background:linear-gradient(135deg,var(--accent-light) 0%,rgba(255,255,255,.4) 55%,var(--bg) 100%);overflow:hidden}
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:flex-start;margin-top:48px}
.plan-card{position:relative;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:0 28px 28px;box-shadow:var(--shadow-sm);transition:transform var(--transition),box-shadow var(--transition)}
.plan-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.plan-card.featured{border-color:var(--accent);box-shadow:0 14px 36px rgba(27,41,40,.12);margin-top:-40px;z-index:2}
.plan-card.featured:hover{box-shadow:0 20px 44px rgba(27,41,40,.16)}
.plan-badge{position:absolute;top:16px;right:16px;background:var(--accent);color:#fff;font-size:13px;font-weight:600;padding:5px 16px;border-radius:999px;box-shadow:0 4px 12px rgba(210,109,36,.28);z-index:3}
.plan-img{margin:0 -28px 18px;height:150px;overflow:hidden;border-radius:15px 15px 0 0}
.plan-img img{width:100%;height:100%;object-fit:cover}
.plan-top h3{font-size:21px;margin:0}
.plan-price{margin:14px 0 6px;font-size:31px;font-weight:700;color:var(--accent);line-height:1.2;font-variant-numeric:tabular-nums}
.plan-price .cur{font-size:18px;font-weight:600;color:var(--accent-dark);margin-right:2px;vertical-align:9px}
.plan-price .period{font-size:14px;font-weight:400;color:var(--text-muted);margin-left:2px}
.plan-features{margin:16px 0 22px;padding-top:14px;border-top:1px dashed var(--border)}
.plan-features li{position:relative;padding:5px 0 5px 26px;font-size:15px;color:var(--text-body);line-height:1.6}
.plan-features li::before{content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;left:0;top:6px;color:var(--success);font-size:14px}

.compare{background:var(--bg)}
.table-wrap{background:var(--card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--border);overflow-x:auto}
.compare-table{width:100%;border-collapse:collapse;min-width:820px;font-size:15px}
.compare-table th,.compare-table td{padding:0 14px;height:52px;border-bottom:1px solid var(--border);text-align:center;color:var(--text-body);vertical-align:middle}
.compare-table th{background:var(--primary);color:#fff;font-weight:600;height:56px}
.compare-table th:first-child{text-align:left;width:220px}
.compare-table td:first-child{text-align:left;color:var(--text);font-weight:500}
.compare-table th.col-featured{box-shadow:inset 0 4px 0 var(--accent)}
.compare-table td.col-featured{background:var(--primary-light)}
.compare-table tbody tr:hover td{background:var(--bg)}
.compare-table tbody tr:hover td.col-featured{background:var(--primary-light)}
.compare-table .ok{color:var(--success)}
.compare-table .no{color:var(--text-muted)}
.compare-table .price-row td{padding:10px 14px;background:#fff}
.compare-table .price-row td.col-featured{background:var(--primary-light)}
.compare-table .price-row strong{font-size:18px;color:var(--accent)}
.compare-table .year{font-size:13px;color:var(--text-muted);font-weight:400;margin-left:2px}
.compare-table .action-row td{border-bottom:none;padding:18px 10px 22px;background:#fff}
.compare-table .action-row td.col-featured{background:var(--primary-light)}
.compare-note{margin-top:18px;font-size:13px;color:var(--text-muted);text-align:center}

.limited{background:var(--primary-dark);color:#fff;text-align:center;position:relative;overflow:hidden}
.limited .container{position:relative;z-index:1}
.limited-tag{display:inline-flex;align-items:center;gap:6px;background:var(--danger);color:#fff;font-size:13px;font-weight:600;padding:5px 16px;border-radius:6px;margin-bottom:20px}
.limited h2{color:#fff;font-size:30px;margin-bottom:12px}
.limited-desc{color:rgba(255,255,255,.78);max-width:620px;margin:0 auto 28px;font-size:15px}
.countdown{display:flex;justify-content:center;align-items:center;gap:10px;margin-bottom:32px}
.cd-box{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.12);border-radius:8px;width:92px;padding:16px 8px 12px;text-align:center}
.cd-num{display:block;font-size:40px;font-weight:700;color:var(--accent);line-height:1.1;font-variant-numeric:tabular-nums}
.cd-label{display:block;font-size:13px;color:rgba(255,255,255,.72);margin-top:6px}
.cd-sep{font-size:24px;color:rgba(255,255,255,.45);font-weight:300}

.news{background:var(--card)}
.news-list{display:flex;flex-direction:column;gap:20px}
.news-card{display:flex;gap:20px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow-sm);transition:transform var(--transition),box-shadow var(--transition)}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.news-thumb{width:150px;height:104px;border-radius:8px;overflow:hidden;flex-shrink:0;display:block}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.news-card:hover .news-thumb img{transform:scale(1.05)}
.news-body{flex:1;min-width:0;display:flex;flex-direction:column;justify-content:center}
.news-body h3{font-size:18px;margin-bottom:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.news-body h3 a{color:var(--text)}
.news-body h3 a:hover{color:var(--primary)}
.news-body p{font-size:14px;color:var(--text-muted);margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.news-meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--text-muted)}
.meta-time{display:inline-flex;align-items:center;gap:6px}
.meta-tag{background:var(--primary-light);color:var(--primary);padding:3px 10px;border-radius:999px;font-size:13px}
.read-link{margin-left:auto;color:var(--accent);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.read-link:hover{color:var(--accent-dark)}
.empty-state{border:1px dashed var(--border);border-radius:var(--radius);background:var(--bg);padding:52px 24px;text-align:center;color:var(--text-muted);display:flex;flex-direction:column;align-items:center;gap:8px}
.empty-state i{font-size:40px;color:var(--border)}
.empty-state strong{font-size:17px;color:var(--text)}
.search-empty{display:none;margin-bottom:16px;background:var(--primary-light);border-radius:var(--radius-sm);padding:12px 18px;color:var(--primary);font-size:14px}

.contact{background:var(--bg)}
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.contact-info h2{margin-bottom:14px}
.contact-info>p{margin-bottom:24px;color:var(--text-muted)}
.contact-list{display:flex;flex-direction:column;gap:18px;margin-bottom:24px}
.contact-list li{display:flex;gap:14px;align-items:flex-start}
.contact-icon{width:44px;height:44px;border-radius:12px;background:var(--primary-light);color:var(--primary);display:inline-flex;align-items:center;justify-content:center;font-size:17px;flex-shrink:0}
.contact-list li strong{display:block;color:var(--text);font-size:15px;line-height:1.3;margin-bottom:2px}
.contact-list li span{font-size:14px;color:var(--text-muted)}
.contact-note{display:flex;gap:10px;align-items:flex-start;background:var(--accent-light);border:1px solid #f5d7c3;border-radius:var(--radius);padding:14px 18px;font-size:14px;color:#7a4a28}
.contact-note i{color:var(--accent);margin-top:4px}
.contact-note p{margin:0}
.contact-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:32px}
.contact-card h3{margin-bottom:22px;font-size:22px}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:6px}
.form-note{margin-top:12px;font-size:13px;color:var(--text-muted);text-align:center}
.form-success{margin-top:14px;background:var(--primary-light);border:1px solid #bcd9d7;color:var(--primary-dark);border-radius:var(--radius-sm);padding:12px 16px;font-size:14px;text-align:center}

.site-footer{background:var(--primary-dark);color:#B5C4C2}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding:60px 0 36px}
.footer-brand p{font-size:14px;line-height:1.7;color:#8FA9A7;margin:14px 0 18px;max-width:280px}
.footer-col h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:#B5C4C2;font-size:14px;transition:color var(--transition)}
.footer-col a:hover{color:#fff}
.social-icons{display:flex;gap:10px}
.social-icons .soc{width:38px;height:38px;border-radius:8px;background:rgba(255,255,255,.08);display:inline-flex;align-items:center;justify-content:center;color:#B5C4C2;font-size:16px;transition:background var(--transition),color var(--transition)}
.social-icons .soc:hover{background:rgba(255,255,255,.16);color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;display:flex;justify-content:space-between;align-items:center;font-size:14px;color:#8FA9A7}

@media (max-width: 991.98px){
  :root{--section-space:56px}
  .nav-inner{flex-wrap:wrap;height:auto;padding:14px 24px;gap:12px 16px}
  .logo{order:0}
  .main-nav{order:1}
  .nav-cta{order:2;margin-left:auto}
  .search-wrap{order:3;flex-basis:100%;max-width:none;margin:2px 0 0}
  .main-nav a{padding:8px 12px;font-size:14px}
  .hero{padding:76px 0}
  .hero h1{font-size:36px}
  .contact-grid{gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .plan-grid{gap:20px}
  .plan-card{padding:0 22px 22px}
  .plan-img{margin:0 -22px 16px}
}

@media (max-width: 767.98px){
  :root{--section-space:44px}
  .container{padding-left:20px;padding-right:20px}
  h1{font-size:28px}
  h2{font-size:24px}
  .nav-inner{padding:12px 20px}
  .nav-toggle{display:inline-flex;order:1;margin-left:auto}
  .logo{order:0}
  .search-wrap{order:2;flex-basis:100%;max-width:none;margin-top:4px}
  .main-nav{display:none;order:3;flex-basis:100%;border-top:1px solid var(--border);padding:12px 0 4px;margin-top:6px}
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:2px}
  .main-nav a{padding:12px 14px;font-size:15px}
  .mobile-cta{display:block;margin-top:8px}
  .nav-cta{display:none}
  .hero{padding:56px 0 60px}
  .hero h1{font-size:30px;letter-spacing:.2px}
  .hero-sub{font-size:16px;margin-bottom:24px}
  .hero-actions{flex-direction:column;gap:12px;margin-bottom:28px}
  .hero-actions .btn{width:100%}
  .hero-search{height:48px}
  .trust-list{gap:16px;justify-content:flex-start;overflow-x:auto;padding-bottom:4px;flex-wrap:nowrap}
  .trust-item{flex-shrink:0}
  .plan-grid{grid-template-columns:1fr;gap:28px}
  .plan-card.featured{margin-top:0}
  .plan-badge{top:14px;right:14px}
  .compare-table{min-width:760px}
  .countdown{gap:6px}
  .cd-box{width:72px;padding:12px 4px 10px}
  .cd-num{font-size:28px}
  .cd-sep{display:none}
  .news-thumb{width:116px;height:92px}
  .news-body h3{font-size:15px}
  .news-body p{font-size:13px}
  .news-meta{gap:8px;flex-wrap:wrap}
  .read-link{margin-left:0}
  .section-head.with-link{flex-direction:column;align-items:flex-start}
  .contact-grid{grid-template-columns:1fr;gap:28px}
  .contact-card{padding:24px 20px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-top:44px}
  .footer-bottom{flex-direction:column;gap:6px;text-align:center}
}

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

/* roulang page: category1 */
:root {
            --primary: #0E7C7B;
            --primary-dark: #0A5B5A;
            --primary-light: #E3F2F1;
            --accent: #E8833A;
            --accent-dark: #D26D24;
            --accent-light: #FCE8DB;
            --bg: #F6F4F0;
            --card: #FFFFFF;
            --heading: #1B2928;
            --body: #4A5655;
            --muted: #8A9391;
            --border: #E5E0DA;
            --radius: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(27, 41, 40, 0.05);
            --shadow-hover: 0 10px 24px rgba(27, 41, 40, 0.10);
            --shadow-lg: 0 12px 32px rgba(27, 41, 40, 0.12);
            --section-space: 72px;
            --transition: 0.2s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--body);
            line-height: 1.75;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }

        .container {
            max-width: 1200px;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        a:hover {
            color: var(--primary-dark);
        }

        img {
            max-width: 100%;
            height: auto;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--heading);
            font-family: inherit;
            line-height: 1.35;
        }

        ::selection {
            background: var(--primary);
            color: #fff;
        }

        .btn {
            border-radius: 8px;
            font-weight: 600;
            padding: 10px 22px;
            transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
            text-decoration: none;
            border: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--accent-dark);
            color: #fff;
            box-shadow: 0 6px 18px rgba(232, 131, 58, 0.28);
            transform: translateY(-1px);
        }

        .btn-block {
            display: block;
            width: 100%;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, 0.92);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            gap: 18px;
            min-height: 72px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            text-decoration: none;
        }

        .logo-mark {
            width: 34px;
            height: 34px;
            border-radius: 9px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            position: relative;
            flex-shrink: 0;
        }

        .logo-mark::after {
            content: "";
            position: absolute;
            inset: 8px;
            border-radius: 4px;
            background: var(--accent);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
        }

        .search-wrap {
            flex: 1;
            max-width: 480px;
            display: flex;
            align-items: center;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 0 14px;
            height: 44px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .search-wrap i {
            color: var(--muted);
            margin-right: 8px;
            font-size: 14px;
        }

        .search-wrap input {
            border: none;
            outline: none;
            flex: 1;
            font-size: 15px;
            background: transparent;
            color: var(--heading);
        }

        .search-wrap:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(14, 124, 123, 0.12);
        }

        .main-nav ul {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px;
        }

        .main-nav li a {
            display: inline-block;
            padding: 8px 12px;
            border-radius: 8px;
            font-size: 15px;
            color: var(--body);
            text-decoration: none;
            font-weight: 500;
            transition: background 0.2s ease, color 0.2s ease;
        }

        .main-nav li.active a,
        .main-nav li a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .mobile-cta {
            display: none;
        }

        .nav-cta {
            margin-left: 6px;
            flex-shrink: 0;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 8px;
            width: 40px;
            height: 40px;
            font-size: 16px;
            color: var(--heading);
            align-items: center;
            justify-content: center;
        }

        .page-hero {
            padding: 72px 0 96px;
            background: linear-gradient(180deg, rgba(10, 91, 90, 0.88) 0%, rgba(14, 124, 123, 0.65) 100%),
                url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            color: #fff;
        }

        .breadcrumb-inline {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-inline a {
            color: rgba(255, 255, 255, 0.82);
        }

        .breadcrumb-inline a:hover {
            color: #fff;
        }

        .breadcrumb-inline span {
            opacity: 0.7;
        }

        .page-hero h1 {
            color: #fff;
            font-size: 40px;
            font-weight: 700;
            margin: 0 0 14px;
            line-height: 1.25;
        }

        .hero-lead {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.9);
            max-width: 640px;
            margin: 0;
            line-height: 1.7;
        }

        .stats-strip {
            margin-top: -42px;
            padding-bottom: 16px;
            position: relative;
            z-index: 2;
        }

        .stat-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            padding: 22px 16px;
            text-align: center;
            height: 100%;
        }

        .stat-num {
            font-size: 30px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }

        .stat-label {
            font-size: 13px;
            color: var(--muted);
            margin-top: 4px;
        }

        .section {
            padding: var(--section-space) 0;
        }

        .section-white {
            background: #fff;
        }

        .section-head {
            margin-bottom: 36px;
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--heading);
            margin-bottom: 8px;
        }

        .section-head p {
            color: var(--muted);
            font-size: 15px;
            max-width: 640px;
            margin: 0;
        }

        .card-wall-grid .feature-card {
            height: 100%;
        }

        .feature-card {
            position: relative;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            height: 100%;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            display: flex;
            flex-direction: column;
        }

        .feature-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .feature-card .card-cover img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            display: block;
        }

        .feature-card .card-body {
            padding: 24px 26px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            flex: 1;
        }

        .badge-tag {
            align-self: flex-start;
            background: var(--accent-light);
            color: var(--accent-dark);
            border-radius: 999px;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 0;
        }

        .card-desc {
            font-size: 14px;
            color: var(--body);
            line-height: 1.7;
            margin: 0;
            flex: 1;
        }

        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 6px 14px;
        }

        .feature-list li {
            font-size: 13px;
            color: var(--body);
            display: flex;
            gap: 6px;
            align-items: center;
            line-height: 1.5;
        }

        .feature-list li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 11px;
            color: var(--primary);
            flex-shrink: 0;
        }

        .card-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-dark);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 6px;
            text-decoration: none;
        }

        .card-more:hover {
            color: var(--accent);
        }

        .feature-card-sm {
            background: var(--primary-light);
            border-color: transparent;
            box-shadow: none;
        }

        .feature-card-sm:hover {
            background: #DCEEEC;
            box-shadow: var(--shadow-hover);
        }

        .feature-card-sm .feature-list {
            grid-template-columns: 1fr;
        }

        .entry-list {
            border: 1px solid var(--border);
            border-radius: 12px;
            background: #fff;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .entry-row {
            display: flex;
            align-items: center;
            gap: 24px;
            padding: 26px 30px;
            background: #fff;
            border-bottom: 1px solid var(--border);
            transition: background 0.2s ease;
        }

        .entry-row:last-child {
            border-bottom: none;
        }

        .entry-row:hover {
            background: var(--primary-light);
        }

        .entry-num {
            font-size: 20px;
            font-weight: 700;
            color: var(--accent);
            width: 40px;
            flex-shrink: 0;
            font-variant-numeric: tabular-nums;
        }

        .entry-title {
            width: 220px;
            flex-shrink: 0;
            font-size: 16px;
            font-weight: 600;
            color: var(--heading);
            margin: 0;
        }

        .entry-desc {
            flex: 1;
            margin: 0;
            font-size: 14px;
            color: var(--body);
            line-height: 1.7;
        }

        .entry-arrow {
            color: var(--primary);
            flex-shrink: 0;
            font-size: 15px;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            transition: background 0.2s ease, color 0.2s ease;
        }

        .entry-arrow:hover {
            background: var(--primary);
            color: #fff;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px 26px;
            box-shadow: var(--shadow-sm);
            height: 100%;
            transition: box-shadow 0.2s ease, transform 0.2s ease;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .faq-item h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--heading);
            margin-bottom: 10px;
            display: flex;
            gap: 8px;
            align-items: flex-start;
        }

        .faq-item h3::before {
            content: "\f059";
            font-family: "Font Awesome 6 Free";
            font-weight: 400;
            color: var(--primary);
            font-size: 16px;
            margin-top: 2px;
        }

        .faq-item p {
            font-size: 14px;
            color: var(--body);
            line-height: 1.8;
            margin: 0;
            padding-left: 24px;
        }

        .cta-band {
            padding: 56px 0;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
        }

        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: 26px;
            margin: 0 0 6px;
            line-height: 1.3;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.8);
            margin: 0;
            font-size: 15px;
        }

        .btn-cta {
            background: var(--accent);
            color: #fff;
            padding: 13px 32px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 16px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            text-decoration: none;
            transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
        }

        .btn-cta:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(10, 91, 90, 0.3);
        }

        .site-footer {
            background: var(--primary-dark);
            color: #B5C4C2;
            padding: 56px 0 0;
            font-size: 14px;
        }

        .logo-light .logo-text {
            color: #fff;
        }

        .logo-light .logo-mark {
            background: #fff;
        }

        .logo-light .logo-mark::after {
            background: var(--accent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 36px;
        }

        .footer-brand p {
            color: #B5C4C2;
            margin: 16px 0 18px;
            line-height: 1.7;
            max-width: 300px;
        }

        .social-icons {
            display: flex;
            gap: 10px;
        }

        .social-icons .soc {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: background 0.2s ease;
        }

        .social-icons .soc:hover {
            background: var(--accent);
            color: #fff;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            margin-bottom: 14px;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            gap: 8px;
        }

        .footer-col ul a,
        .footer-col ul span {
            color: #B5C4C2;
            text-decoration: none;
        }

        .footer-col ul a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 18px 0;
            display: flex;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
        }

        @media (max-width: 991px) {
            .nav-inner {
                flex-wrap: wrap;
                min-height: 0;
                padding: 12px 0;
                row-gap: 10px;
            }

            .nav-toggle {
                display: inline-flex;
                margin-left: auto;
            }

            .search-wrap {
                order: 3;
                flex-basis: 100%;
                max-width: 100%;
            }

            .main-nav {
                display: none;
                width: 100%;
                order: 4;
                padding-top: 6px;
            }

            .main-nav.open {
                display: block;
            }

            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }

            .main-nav li a {
                display: block;
                padding: 12px 10px;
                border-radius: 8px;
            }

            .nav-cta {
                display: none;
            }

            .mobile-cta {
                display: block;
                padding: 8px 0 2px;
            }

            .page-hero h1 {
                font-size: 34px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 767px) {
            .page-hero {
                padding: 44px 0 80px;
            }

            .page-hero h1 {
                font-size: 28px;
            }

            .hero-lead {
                font-size: 16px;
            }

            .section {
                padding: 48px 0;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .stats-strip {
                margin-top: -36px;
            }

            .stat-num {
                font-size: 24px;
            }

            .feature-card .card-cover img {
                height: 170px;
            }

            .feature-card .card-body {
                padding: 20px;
            }

            .feature-list {
                grid-template-columns: 1fr;
            }

            .entry-row {
                flex-wrap: wrap;
                gap: 8px;
                padding: 20px;
            }

            .entry-title {
                width: 100%;
                font-size: 15px;
            }

            .entry-desc {
                flex-basis: 100%;
                font-size: 13px;
            }

            .entry-arrow {
                display: none;
            }

            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }

            .btn-cta {
                width: 100%;
                justify-content: center;
            }

            .cta-inner h2 {
                font-size: 22px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: article */
:root {
  --primary: #0E7C7B;
  --primary-dark: #0A5B5A;
  --primary-light: #E3F2F1;
  --accent: #E8833A;
  --accent-dark: #D26D24;
  --accent-light: #FCE8DB;
  --bg: #F6F4F0;
  --card-bg: #FFFFFF;
  --title-color: #1B2928;
  --text-color: #4A5655;
  --text-light: #8A9391;
  --border: #E5E0DA;
  --success: #2F9E62;
  --danger: #D64541;
  --radius-s: 8px;
  --radius-m: 12px;
  --radius-l: 16px;
  --radius-full: 999px;
  --shadow-sm: 0 2px 8px rgba(27,41,40,0.05);
  --shadow-md: 0 10px 24px rgba(27,41,40,0.10);
  --shadow-lg: 0 12px 32px rgba(27,41,40,0.12);
  --transition: 0.2s ease;
  --font-base: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-color);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
  width: 100%;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 26px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  border: 1px solid transparent;
  border-radius: var(--radius-s);
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover, .btn-primary:focus {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(232,131,58,0.35);
}
.btn-block { display: flex; width: 100%; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  min-height: 72px;
  padding-top: 8px;
  padding-bottom: 8px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark {
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 2px;
  transform: rotate(45deg);
  display: inline-block;
  box-shadow: 2px 2px 0 var(--primary-light);
}
.logo-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.02em;
}
.logo:hover .logo-text { color: var(--primary-dark); }
.search-wrap {
  flex: 1;
  max-width: 520px;
  height: 44px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  padding: 0 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.search-wrap:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(14,124,123,0.12);
}
.search-wrap > i {
  font-size: 14px;
  color: var(--text-light);
}
.search-wrap input {
  border: 0;
  outline: 0;
  background: transparent;
  width: 100%;
  height: 40px;
  font-size: 14px;
  color: var(--title-color);
}
.search-wrap input::placeholder { color: var(--text-light); }
.main-nav { margin-left: auto; }
.main-nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
}
.main-nav a {
  display: block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-color);
  border-radius: var(--radius-s);
  transition: background var(--transition), color var(--transition);
}
.main-nav a:hover {
  color: var(--primary);
  background: var(--primary-light);
}
.main-nav li.active > a {
  color: var(--primary);
  font-weight: 600;
  background: var(--primary-light);
}
.main-nav li.mobile-cta { display: none; }
.nav-cta { margin-left: 12px; flex-shrink: 0; }
.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  font-size: 20px;
  color: var(--title-color);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-s);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition);
}
.nav-toggle:hover { background: var(--bg); }

.article-page { min-height: 60vh; padding-bottom: 24px; }
.breadcrumb-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-light);
  padding: 22px 0 4px;
}
.breadcrumb-nav a { color: var(--primary); }
.breadcrumb-nav .sep { color: var(--border); }
.breadcrumb-nav .current {
  max-width: 360px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.article-hero {
  margin: 20px 0 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.article-hero h1 {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--title-color);
  margin: 0 0 14px;
  max-width: 900px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  font-size: 13px;
  color: var(--text-light);
}
.article-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-meta .meta-item i { font-size: 13px; }
.article-meta .tag {
  background: var(--primary-light);
  color: var(--primary);
  padding: 4px 12px;
  border-radius: var(--radius-full);
}
.article-body {
  background: var(--card-bg);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-sm);
  padding: 44px 52px;
  margin-bottom: 32px;
  line-height: 1.8;
  word-break: break-word;
}
.article-body p {
  margin-bottom: 1.5em;
  color: var(--text-color);
  line-height: 1.8;
}
.article-body h2,
.article-body h3 {
  color: var(--title-color);
  font-weight: 700;
}
.article-body h2 {
  font-size: 28px;
  line-height: 1.3;
  margin: 40px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.article-body h3 {
  font-size: 20px;
  line-height: 1.4;
  margin: 32px 0 12px;
}
.article-body ul,
.article-body ol {
  margin: 0 0 1.5em 1.2em;
  padding: 0;
  color: var(--text-color);
  line-height: 1.8;
}
.article-body li { margin-bottom: 6px; }
.article-body blockquote {
  border-left: 3px solid var(--primary);
  background: var(--primary-light);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  padding: 16px 20px;
  margin: 24px 0;
  color: var(--text-color);
}
.article-body blockquote p { margin-bottom: 0; }
.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-sm);
  margin: 16px 0;
}
.article-body a { color: var(--primary); text-decoration: underline; }
.article-body pre {
  background: var(--title-color);
  color: #E8EFED;
  padding: 20px;
  border-radius: var(--radius-m);
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 1.5em;
  max-width: 100%;
}
.article-body code { font-family: Consolas, Menlo, "Courier New", monospace; }
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}
.article-body th {
  background: var(--primary);
  color: #fff;
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
}
.article-body td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text-color);
}
.article-body tr:last-child td { border-bottom: 0; }
.article-body tr:hover td { background: var(--bg); }
.article-body hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}
.not-found {
  text-align: center;
  padding: 60px 20px;
}
.not-found i {
  display: block;
  font-size: 48px;
  margin-bottom: 16px;
  color: var(--border);
}
.not-found p {
  font-size: 18px;
  color: var(--text-color);
  margin-bottom: 20px;
}
.related-section {
  margin: 48px 0 16px;
}
.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.section-heading h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--title-color);
  margin: 0;
  position: relative;
  padding-left: 14px;
}
.section-heading h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 22px;
  background: var(--accent);
  border-radius: 2px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--card-bg);
  border-radius: var(--radius-m);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
}
.related-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.related-card .cover {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--primary-light);
}
.related-card .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.related-card:hover .cover img { transform: scale(1.04); }
.related-card .card-body {
  padding: 18px 20px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.related-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--title-color);
  margin: 0;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition);
}
.related-card h3 a { color: inherit; }
.related-card h3 a:hover { color: var(--primary); }
.related-card .time {
  font-size: 13px;
  color: var(--text-light);
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.back-link {
  text-align: center;
  margin: 32px 0 56px;
}
.back-link a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-color);
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 10px 24px;
  transition: border-color var(--transition), color var(--transition), transform var(--transition);
}
.back-link a:hover {
  color: var(--primary);
  border-color: var(--primary);
  transform: translateX(-2px);
}

.site-footer {
  background: var(--primary-dark);
  color: #B5C4C2;
  padding-top: 56px;
  margin-top: 56px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 32px;
  padding-bottom: 40px;
}
.logo-light .logo-text { color: #fff; }
.logo-light .logo-mark { background: var(--accent); }
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: #B5C4C2;
  margin: 14px 0 16px;
  max-width: 280px;
}
.social-icons {
  display: flex;
  gap: 10px;
}
.soc {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.08);
  color: #B5C4C2;
  font-size: 14px;
  transition: background var(--transition), color var(--transition);
}
.soc:hover {
  background: var(--accent);
  color: #fff;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 16px;
}
.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col li { font-size: 14px; }
.footer-col a {
  color: #B5C4C2;
  transition: color var(--transition);
}
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding: 18px 0;
  font-size: 13px;
  color: #8AA3A1;
}

@media (max-width: 991.98px) {
  .search-wrap {
    order: 5;
    flex-basis: 100%;
    max-width: none;
    width: 100%;
  }
  .main-nav {
    order: 6;
    margin-left: 0;
    width: 100%;
    display: none;
  }
  .main-nav.open { display: block; }
  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-m);
    padding: 10px;
    margin-top: 6px;
  }
  .main-nav a { padding: 12px 14px; }
  .main-nav li.mobile-cta { display: block; padding-top: 6px; }
  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }
  .nav-cta { display: none; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
}
@media (max-width: 767.98px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .article-body {
    padding: 24px 20px;
  }
  .article-hero h1 {
    font-size: 28px;
  }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .breadcrumb-nav .current {
    max-width: 220px;
  }
}

/* roulang page: category2 */
:root {
      --primary: #0E7C7B;
      --primary-dark: #0A5B5A;
      --primary-light: #E3F2F1;
      --accent: #E8833A;
      --accent-dark: #D26D24;
      --accent-light: #FCE8DB;
      --bg: #F6F4F0;
      --card-bg: #FFFFFF;
      --text-title: #1B2928;
      --text-body: #4A5655;
      --text-muted: #8A9391;
      --border: #E5E0DA;
      --success: #2F9E62;
      --danger: #D64541;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --shadow-sm: 0 2px 8px rgba(27,41,40,0.05);
      --shadow-md: 0 10px 24px rgba(27,41,40,0.10);
      --shadow-lg: 0 12px 32px rgba(27,41,40,0.12);
      --transition: 0.2s ease;
      --container-w: 1200px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.75;
      color: var(--text-body);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: var(--primary);
      text-decoration: none;
      transition: color 0.2s ease;
    }

    a:hover {
      color: var(--primary-dark);
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    ul,
    ol {
      padding-left: 1.25rem;
    }

    button,
    input,
    select,
    textarea {
      font: inherit;
    }

    .container {
      max-width: var(--container-w);
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* ========== 按钮 ========== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 600;
      border: 2px solid transparent;
      transition: all var(--transition);
      text-decoration: none;
      cursor: pointer;
      line-height: 1.6;
    }

    .btn-primary {
      background: var(--accent);
      color: #fff;
      border-color: var(--accent);
    }

    .btn-primary:hover,
    .btn-primary:focus {
      background: var(--accent-dark);
      border-color: var(--accent-dark);
      color: #fff;
      box-shadow: 0 4px 16px rgba(232, 131, 58, 0.25);
      transform: translateY(-1px);
    }

    .btn-ghost-light {
      background: transparent;
      color: #fff;
      border-color: rgba(255, 255, 255, 0.7);
    }

    .btn-ghost-light:hover {
      background: rgba(255, 255, 255, 0.12);
      color: #fff;
      border-color: #fff;
      transform: translateY(-1px);
    }

    .btn-block {
      width: 100%;
    }

    /* ========== 导航 ========== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1030;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      gap: 20px;
      min-height: 72px;
      flex-wrap: wrap;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
      flex-shrink: 0;
    }

    .logo-mark {
      width: 34px;
      height: 34px;
      background: var(--primary);
      border-radius: 8px 8px 8px 2px;
      display: inline-block;
      position: relative;
      flex-shrink: 0;
    }

    .logo-mark::after {
      content: '';
      position: absolute;
      width: 10px;
      height: 10px;
      background: var(--accent);
      border-radius: 50%;
      right: -4px;
      bottom: -4px;
    }

    .logo-text {
      font-size: 22px;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: 0.5px;
      line-height: 1.2;
    }

    .search-wrap {
      flex: 1;
      max-width: 520px;
      display: flex;
      align-items: center;
      height: 44px;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 0 16px;
      gap: 10px;
      transition: border-color var(--transition), box-shadow var(--transition);
      min-width: 200px;
    }

    .search-wrap:focus-within {
      border-color: var(--primary);
      box-shadow: 0 0 0 4px rgba(14, 124, 123, 0.12);
    }

    .search-wrap i {
      color: var(--text-muted);
      font-size: 15px;
      flex-shrink: 0;
    }

    .search-wrap input {
      border: none;
      outline: none;
      flex: 1;
      height: 100%;
      background: transparent;
      font-size: 15px;
      color: var(--text-title);
    }

    .search-wrap input::placeholder {
      color: var(--text-muted);
    }

    .main-nav ul {
      display: flex;
      align-items: center;
      gap: 6px;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .main-nav a {
      display: block;
      text-decoration: none;
      color: var(--text-body);
      font-size: 15px;
      font-weight: 500;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      transition: all var(--transition);
      white-space: nowrap;
    }

    .main-nav a:hover {
      color: var(--primary);
      background: var(--primary-light);
    }

    .main-nav li.active>a {
      color: var(--primary);
      background: var(--primary-light);
      font-weight: 600;
    }

    .nav-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 20px;
      color: var(--text-title);
      padding: 6px 10px;
      cursor: pointer;
      border-radius: var(--radius-sm);
      transition: background var(--transition);
    }

    .nav-toggle:hover {
      background: var(--primary-light);
    }

    .nav-cta {
      flex-shrink: 0;
    }

    .mobile-cta {
      display: none;
    }

    /* ========== 面包屑 ========== */
    .breadcrumb-nav {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 18px;
      gap: 4px;
    }

    .breadcrumb-nav a {
      color: var(--text-muted);
      text-decoration: none;
      transition: color var(--transition);
    }

    .breadcrumb-nav a:hover {
      color: var(--primary);
    }

    .breadcrumb-nav .separator {
      color: var(--border);
      margin: 0 6px;
    }

    .breadcrumb-nav .current {
      color: var(--text-body);
    }

    /* ========== 页面头部 ========== */
    .page-hero {
      background: linear-gradient(180deg, var(--primary-light) 0%, var(--bg) 100%);
      padding: 60px 0 52px;
      border-bottom: 1px solid var(--border);
    }

    .page-hero h1 {
      font-size: 38px;
      font-weight: 700;
      color: var(--text-title);
      line-height: 1.28;
      margin-bottom: 16px;
      letter-spacing: -0.02em;
    }

    .page-hero .page-lead {
      font-size: 18px;
      line-height: 1.7;
      color: var(--text-body);
      max-width: 720px;
      margin: 0;
    }

    /* ========== 指南正文区 ========== */
    .guide-section {
      padding: 64px 0 72px;
    }

    .guide-layout {
      display: grid;
      grid-template-columns: 220px 1fr;
      gap: 48px;
      align-items: start;
    }

    .guide-toc {
      position: sticky;
      top: 96px;
      background: var(--card-bg);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      border: 1px solid rgba(229, 224, 218, 0.5);
    }

    .guide-toc h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 14px;
      padding-bottom: 10px;
      border-bottom: 1px solid var(--border);
    }

    .guide-toc ul {
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .guide-toc li {
      margin-bottom: 2px;
    }

    .guide-toc a {
      display: block;
      padding: 7px 10px;
      color: var(--text-body);
      text-decoration: none;
      font-size: 14px;
      border-radius: 6px;
      border-left: 3px solid transparent;
      transition: all var(--transition);
    }

    .guide-toc a:hover {
      color: var(--primary);
      background: var(--primary-light);
      border-left-color: var(--primary);
    }

    .guide-toc-mobile {
      display: none;
    }

    .guide-content {
      max-width: 800px;
      min-width: 0;
    }

    .section-block {
      background: var(--card-bg);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-sm);
      border: 1px solid rgba(229, 224, 218, 0.4);
      margin-bottom: 24px;
      scroll-margin-top: 96px;
    }

    .section-block h2 {
      font-size: 24px;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 16px;
      padding-bottom: 14px;
      border-bottom: 2px solid var(--primary-light);
      line-height: 1.35;
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .section-block h2 .section-icon {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      background: var(--primary-light);
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      flex-shrink: 0;
    }

    .section-block h3 {
      font-size: 18px;
      font-weight: 600;
      color: var(--text-title);
      margin: 20px 0 8px;
      line-height: 1.4;
    }

    .section-block p {
      font-size: 16px;
      line-height: 1.8;
      color: var(--text-body);
      margin-bottom: 14px;
    }

    .section-block p:last-child {
      margin-bottom: 0;
    }

    .section-block ul {
      padding-left: 1.25rem;
      margin-bottom: 14px;
    }

    .section-block li {
      margin-bottom: 6px;
      color: var(--text-body);
      line-height: 1.7;
    }

    .diff-list {
      margin: 20px 0 8px;
    }

    .diff-item {
      display: flex;
      gap: 16px;
      padding: 16px 0;
      border-bottom: 1px solid var(--border);
    }

    .diff-item:last-child {
      border-bottom: none;
    }

    .diff-name {
      flex-shrink: 0;
      min-width: 72px;
      font-weight: 700;
      font-size: 15px;
      color: var(--primary);
      padding-top: 2px;
    }

    .diff-desc {
      font-size: 15px;
      line-height: 1.7;
      color: var(--text-body);
    }

    .guide-figure {
      margin: 24px 0 8px;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .guide-figure img {
      width: 100%;
      object-fit: cover;
      border-radius: var(--radius-md) var(--radius-md) 0 0;
    }

    .guide-figure figcaption {
      background: var(--primary-dark);
      color: rgba(255, 255, 255, 0.85);
      font-size: 13px;
      text-align: center;
      padding: 10px 16px;
      letter-spacing: 0.02em;
    }

    .callout {
      background: var(--primary-light);
      border-radius: var(--radius-sm);
      padding: 18px 20px;
      font-size: 14px;
      color: var(--primary-dark);
      display: flex;
      gap: 12px;
      align-items: flex-start;
      margin: 20px 0 4px;
      line-height: 1.7;
    }

    .callout i {
      flex-shrink: 0;
      margin-top: 3px;
      color: var(--primary);
    }

    /* ========== 相关专题 ========== */
    .topic-section {
      padding: 72px 0;
      background: var(--bg);
    }

    .topic-header {
      margin-bottom: 28px;
    }

    .topic-header h2 {
      font-size: 28px;
      font-weight: 700;
      color: var(--text-title);
      margin-bottom: 6px;
    }

    .topic-header p {
      font-size: 15px;
      color: var(--text-muted);
      margin: 0;
    }

    .topic-list {
      background: var(--card-bg);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      border: 1px solid rgba(229, 224, 218, 0.4);
    }

    .topic-item {
      display: flex;
      align-items: center;
      gap: 24px;
      padding: 24px 28px;
      text-decoration: none;
      border-bottom: 1px solid var(--border);
      transition: background var(--transition), box-shadow var(--transition);
    }

    .topic-item:last-child {
      border-bottom: none;
    }

    .topic-item:hover {
      background: var(--primary-light);
    }

    .topic-item .topic-index {
      font-size: 20px;
      font-weight: 700;
      color: var(--accent);
      font-variant-numeric: tabular-nums;
      flex-shrink: 0;
      width: 40px;
      text-align: center;
    }

    .topic-body {
      flex: 1;
      min-width: 0;
    }

    .topic-body h3 {
      font-size: 18px;
      font-weight: 600;
      color: var(--text-title);
      margin-bottom: 4px;
      line-height: 1.4;
    }

    .topic-body p {
      font-size: 14px;
      color: var(--text-muted);
      margin: 0;
      line-height: 1.6;
      overflow: hidden;
      text-overflow: ellipsis;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
    }

    .topic-item .fa-arrow-right {
      color: var(--primary);
      font-size: 16px;
      flex-shrink: 0;
      transition: transform var(--transition);
    }

    .topic-item:hover .fa-arrow-right {
      transform: translateX(4px);
    }

    /* ========== CTA ========== */
    .cta-section {
      background: var(--primary-dark);
      padding: 64px 0;
      color: #fff;
      border-top: 4px solid var(--accent);
    }

    .cta-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
      flex-wrap: wrap;
    }

    .cta-text h2 {
      font-size: 28px;
      font-weight: 700;
      margin-bottom: 8px;
      color: #fff;
      line-height: 1.3;
    }

    .cta-text p {
      font-size: 16px;
      color: rgba(255, 255, 255, 0.72);
      margin: 0;
      max-width: 560px;
    }

    .cta-actions {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
      flex-shrink: 0;
    }

    /* ========== 页脚 ========== */
    .site-footer {
      background: var(--primary-dark);
      color: #B5C4C2;
      padding: 56px 0 0;
      font-size: 14px;
    }

    .site-footer .logo-light .logo-text {
      color: #fff;
    }

    .site-footer .logo-light .logo-mark {
      background: var(--accent);
    }

    .site-footer .logo-light .logo-mark::after {
      background: #fff;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 40px;
      padding-bottom: 40px;
    }

    .footer-brand p {
      margin: 16px 0;
      color: #8CA3A1;
      font-size: 14px;
      line-height: 1.7;
      max-width: 280px;
    }

    .footer-col h4 {
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 16px;
    }

    .footer-col ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .footer-col li {
      margin-bottom: 10px;
    }

    .footer-col a {
      color: #B5C4C2;
      text-decoration: none;
      transition: color var(--transition);
    }

    .footer-col a:hover {
      color: #fff;
    }

    .footer-col span {
      color: #8CA3A1;
    }

    .social-icons {
      display: flex;
      gap: 12px;
      margin-top: 16px;
    }

    .social-icons .soc {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.08);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #B5C4C2;
      font-size: 16px;
      transition: all var(--transition);
    }

    .social-icons .soc:hover {
      background: var(--accent);
      color: #fff;
      transform: translateY(-2px);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 18px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      color: #7E9492;
      font-size: 13px;
    }

    .footer-bottom span:last-child {
      font-variant-numeric: tabular-nums;
    }

    /* ========== 响应式 ========== */
    @media (max-width: 991.98px) {
      .nav-inner {
        flex-wrap: wrap;
        gap: 12px;
        padding-top: 12px;
        padding-bottom: 12px;
      }

      .nav-toggle {
        display: block;
        margin-left: auto;
        order: 3;
      }

      .search-wrap {
        order: 4;
        width: 100%;
        max-width: none;
        flex-basis: 100%;
      }

      .main-nav {
        display: none;
        order: 5;
        width: 100%;
        padding: 4px 0 8px;
      }

      .main-nav.open {
        display: block;
      }

      .main-nav ul {
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
      }

      .main-nav a {
        padding: 12px 14px;
        white-space: normal;
      }

      .nav-cta {
        display: none;
      }

      .mobile-cta {
        display: block;
        margin-top: 8px;
        padding-top: 8px;
        border-top: 1px solid var(--border);
      }

      .guide-layout {
        grid-template-columns: 1fr;
        gap: 24px;
      }

      .guide-toc {
        display: none;
      }

      .guide-toc-mobile {
        display: block;
      }

      .toc-toggle {
        width: 100%;
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 14px 16px;
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        font-size: 15px;
        font-weight: 600;
        color: var(--text-title);
        cursor: pointer;
        transition: border-color var(--transition), box-shadow var(--transition);
      }

      .toc-toggle:hover {
        border-color: var(--primary);
      }

      .toc-toggle i:last-child {
        margin-left: auto;
        transition: transform var(--transition);
      }

      .toc-toggle[aria-expanded="true"] i:last-child {
        transform: rotate(180deg);
      }

      .guide-toc-mobile .collapse {
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-top: none;
        border-radius: 0 0 var(--radius-sm) var(--radius-sm);
        padding: 8px;
      }

      .guide-toc-mobile ul {
        list-style: none;
        margin: 0;
        padding: 0;
      }

      .guide-toc-mobile a {
        display: block;
        padding: 10px 12px;
        color: var(--text-body);
        text-decoration: none;
        font-size: 14px;
        border-radius: 6px;
        transition: all var(--transition);
      }

      .guide-toc-mobile a:hover {
        background: var(--primary-light);
        color: var(--primary);
      }

      .page-hero h1 {
        font-size: 30px;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
    }

    @media (max-width: 767.98px) {
      .container {
        padding-left: 20px;
        padding-right: 20px;
      }

      .page-hero {
        padding: 44px 0 40px;
      }

      .page-hero h1 {
        font-size: 26px;
        line-height: 1.35;
      }

      .page-hero .page-lead {
        font-size: 16px;
      }

      .section-block {
        padding: 24px 20px;
        border-radius: var(--radius-sm);
      }

      .section-block h2 {
        font-size: 20px;
      }

      .diff-item {
        flex-direction: column;
        gap: 4px;
      }

      .diff-name {
        min-width: 0;
      }

      .topic-item {
        padding: 20px 16px;
        gap: 16px;
        flex-wrap: wrap;
      }

      .topic-item .topic-index {
        width: 32px;
        font-size: 18px;
      }

      .topic-item .fa-arrow-right {
        display: none;
      }

      .cta-section {
        padding: 48px 0;
      }

      .cta-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
      }

      .cta-actions {
        width: 100%;
      }

      .cta-actions .btn {
        flex: 1;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .footer-col {
        padding-bottom: 8px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      }

      .footer-col:last-child {
        border-bottom: none;
      }

      .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 4px;
      }
    }

    @media (max-width: 520px) {
      .logo-text {
        font-size: 19px;
      }

      .logo-mark {
        width: 30px;
        height: 30px;
      }

      .page-hero h1 {
        font-size: 23px;
      }

      .guide-section {
        padding: 40px 0;
      }

      .topic-section {
        padding: 48px 0;
      }

      .topic-header h2 {
        font-size: 24px;
      }
    }