/* roulang page: index */
:root{
  --c-primary:#1D4E89;
  --c-primary-dark:#163C6B;
  --c-primary-soft:#E8EFF8;
  --c-accent:#C05E32;
  --c-accent-soft:#FAEDE6;
  --c-green:#5B7F6B;
  --c-bg:#F6F5F2;
  --c-bg-alt:#EDF1F6;
  --c-dark:#12263A;
  --c-dark-2:#1B344E;
  --c-card:#FFFFFF;
  --c-text:#182230;
  --c-text-2:#5A6675;
  --c-text-3:#8A93A0;
  --c-border:#E3E6EA;
  --r-sm:6px;
  --r-btn:10px;
  --r-card:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(24,34,48,.06), 0 6px 18px -8px rgba(24,34,48,.12);
  --sh-2:0 12px 32px -12px rgba(24,34,48,.18);
  --t:180ms cubic-bezier(.2,.6,.3,1);
  --maxw:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--c-primary-dark);text-decoration:underline}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit}
input,select,textarea{font:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- 顶部双层导航 ---------- */
.site-header{position:relative;z-index:1030}
.topbar{background:#fff;border-bottom:1px solid var(--c-border)}
.topbar-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:11px;font-size:19px;font-weight:600;letter-spacing:.2px;color:var(--c-text);flex:0 0 auto}
.brand:hover{text-decoration:none;color:var(--c-primary)}
.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--c-primary);color:#fff;display:grid;place-items:center;font-size:17px;font-weight:600}
.search-box{flex:1 1 auto;max-width:420px;display:flex;align-items:center;gap:10px;background:var(--c-bg-alt);border:1px solid transparent;border-radius:var(--r-pill);padding:0 16px;height:42px;transition:background var(--t),border-color var(--t),box-shadow var(--t)}
.search-box:focus-within{background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px var(--c-primary-soft)}
.search-box i{color:var(--c-text-3);font-size:14px}
.search-box input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--c-text)}
.search-box input::placeholder{color:var(--c-text-3)}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:16px}
.link-quiet{font-size:14px;color:var(--c-text-2)}
.link-quiet:hover{color:var(--c-primary)}
.menu-toggle{display:none;width:44px;height:44px;border:1px solid var(--c-border);border-radius:var(--r-btn);background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:4px;cursor:pointer}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text-2);transition:background var(--t)}
.menu-toggle:hover span{background:var(--c-primary)}

.channelbar{position:sticky;top:0;z-index:1020;background:rgba(255,255,255,.97);border-bottom:1px solid var(--c-border);transition:box-shadow var(--t)}
.channelbar.is-stuck{box-shadow:var(--sh-1)}
.channelbar-inner{position:relative;display:flex;align-items:center;height:52px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;-ms-overflow-style:none}
.channelbar-inner::-webkit-scrollbar{display:none}
.channel-list{display:flex;align-items:center;gap:8px;padding:2px 2px}
.channel-link{display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:var(--r-pill);font-size:15px;color:var(--c-text-2);white-space:nowrap;scroll-snap-align:start;transition:background var(--t),color var(--t)}
.channel-link:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);text-decoration:none}
.channel-link.active{background:var(--c-primary);color:#fff;font-weight:500}
.channel-link.active:hover{background:var(--c-primary-dark);color:#fff}

.mobile-drawer{position:fixed;inset:0;background:rgba(18,38,58,.45);opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:2000}
.mobile-drawer.open{opacity:1;visibility:visible}
.drawer-panel{position:absolute;top:0;left:0;bottom:0;width:290px;max-width:84%;background:#fff;padding:24px 20px;transform:translateX(-100%);transition:transform 280ms cubic-bezier(.2,.6,.3,1);overflow-y:auto}
.mobile-drawer.open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{width:40px;height:40px;border:1px solid var(--c-border);border-radius:var(--r-btn);background:#fff;cursor:pointer;color:var(--c-text-2)}
.drawer-group{font-size:13px;color:var(--c-text-3);letter-spacing:1px;margin:18px 0 8px}
.drawer-link{display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:var(--r-btn);font-size:15.5px;color:var(--c-text);transition:background var(--t),color var(--t)}
.drawer-link:hover,.drawer-link.active{background:var(--c-primary-soft);color:var(--c-primary-dark);text-decoration:none}

/* ---------- 按钮 ---------- */
.ui-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1.2;border:1px solid transparent;cursor:pointer;transition:background var(--t),color var(--t),transform var(--t),box-shadow var(--t),border-color var(--t);white-space:nowrap;min-height:44px}
.ui-btn--primary{background:var(--c-primary);color:#fff}
.ui-btn--primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1);text-decoration:none}
.ui-btn--ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary)}
.ui-btn--ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);text-decoration:none}
.ui-btn--light{background:#fff;color:var(--c-primary-dark)}
.ui-btn--light:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);text-decoration:none}
.ui-btn--sm{padding:9px 16px;font-size:14px;min-height:38px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:500;color:var(--c-primary)}
.link-arrow i{transition:transform var(--t)}
.link-arrow:hover{text-decoration:none;color:var(--c-primary-dark)}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section--alt{background:var(--c-bg-alt)}
.section--plain{background:#fff}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:44px}
.section-head h2{font-size:32px;line-height:1.3;font-weight:600;position:relative;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:4px;border-radius:3px;background:var(--c-primary)}
.section-lead{margin-top:14px;font-size:16px;color:var(--c-text-2);max-width:680px}
.section-tag{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--c-primary);background:var(--c-primary-soft);border-radius:var(--r-pill);padding:4px 12px;margin-bottom:14px}
.pill{display:inline-flex;align-items:center;font-size:13px;padding:4px 11px;border-radius:var(--r-pill);background:var(--c-primary-soft);color:var(--c-primary);line-height:1.5}
.pill--accent{background:var(--c-accent-soft);color:var(--c-accent)}
.pill--green{background:#E7F0EB;color:var(--c-green)}
.pill--muted{background:var(--c-bg-alt);color:var(--c-text-2)}

/* ---------- 首屏 ---------- */
.hero{padding:66px 0 78px;background:linear-gradient(180deg,#FFFFFF 0%,rgba(255,255,255,0) 100%)}
.hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:56px;align-items:center}
.hero h1{font-size:44px;line-height:1.26;font-weight:600;letter-spacing:-.3px;margin-top:20px}
.hero-sub{margin-top:18px;font-size:16.5px;line-height:1.85;color:var(--c-text-2);max-width:580px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:40px;margin-top:42px;padding-top:28px;border-top:1px solid var(--c-border)}
.metric-num{font-size:26px;font-weight:600;color:var(--c-primary);line-height:1.2;font-variant-numeric:tabular-nums}
.metric-label{font-size:14px;color:var(--c-text-3);margin-top:4px}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-2)}
.hero-float{position:absolute;left:-22px;bottom:-26px;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);padding:18px 22px;box-shadow:var(--sh-2);min-width:236px}
.hero-float .hf-label{font-size:13px;color:var(--c-text-3)}
.hero-float .hf-value{font-size:24px;font-weight:600;color:var(--c-dark);font-variant-numeric:tabular-nums;line-height:1.3}
.hero-float .hf-bar{height:6px;border-radius:var(--r-pill);background:var(--c-bg-alt);margin-top:12px;overflow:hidden}
.hero-float .hf-bar span{display:block;height:100%;width:82%;border-radius:var(--r-pill);background:var(--c-accent)}
.hero-float .hf-note{font-size:12.5px;color:var(--c-text-3);margin-top:8px}

/* ---------- 价值主张带 ---------- */
.claims{background:#fff;border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border);padding:52px 0}
.claims-list{display:grid;grid-template-columns:repeat(4,1fr)}
.claim{padding:0 30px}
.claim + .claim{border-left:1px solid var(--c-border)}
.claim:first-child{padding-left:0}
.claim:last-child{padding-right:0}
.claim strong{display:block;font-size:17px;font-weight:600;line-height:1.5}
.claim span{display:block;margin-top:8px;font-size:14px;color:var(--c-text-2);line-height:1.7}

/* ---------- 功能分组 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.feature-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);transition:box-shadow var(--t),transform var(--t);display:flex;flex-direction:column}
.feature-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.feature-icon{width:46px;height:46px;border-radius:12px;background:var(--c-primary-soft);color:var(--c-primary);display:grid;place-items:center;font-size:18px;margin-bottom:20px}
.feature-card h3{font-size:19px;font-weight:600;line-height:1.45}
.feature-card p{margin-top:10px;font-size:15px;color:var(--c-text-2);line-height:1.8}
.feature-points{margin-top:18px;display:grid;gap:10px}
.feature-points li{display:flex;gap:10px;font-size:14.5px;color:var(--c-text-2)}
.feature-points li i{color:var(--c-primary);font-size:12px;margin-top:.62em}
.feature-card .link-arrow{margin-top:22px}
.feature-wide{grid-column:1/-1;background:var(--c-dark);color:#D6DFE9;border-radius:var(--r-card);padding:38px;display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;border:0;box-shadow:var(--sh-2)}
.feature-wide h3{color:#fff;font-size:22px;font-weight:600;line-height:1.45}
.feature-wide p{margin-top:12px;font-size:15px;line-height:1.85;color:#B9C7D6}
.feature-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature-stats .fs-num{font-size:26px;font-weight:600;color:#fff;font-variant-numeric:tabular-nums;line-height:1.2}
.feature-stats .fs-label{font-size:13.5px;color:#94A6B8;margin-top:6px}
.feature-wide .ui-btn{margin-top:26px}

/* ---------- 使用场景 ---------- */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:72px}
.scene:last-child{margin-bottom:0}
.scene--flip .scene-media{order:-1}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-1)}
.scene h3{font-size:22px;font-weight:600;line-height:1.45;margin-top:6px}
.scene-pain{margin-top:14px;font-size:15px;color:var(--c-text-2);line-height:1.85}
.scene-list{margin-top:20px;display:grid;gap:12px}
.scene-list li{display:flex;gap:12px;font-size:15px;color:var(--c-text-2);line-height:1.75}
.scene-list li i{color:var(--c-accent);font-size:12px;margin-top:.7em}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.tag{font-size:13px;padding:4px 12px;border-radius:var(--r-pill);background:var(--c-bg-alt);color:var(--c-text-2)}
.section--alt .tag{background:#fff}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:24px}
.case-main{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column}
.case-main img{width:100%;aspect-ratio:16/9;object-fit:cover}
.case-main-body{padding:28px;display:flex;flex-direction:column;flex:1}
.case-main h3{font-size:20px;font-weight:600;line-height:1.5;margin-top:14px}
.case-quote{margin-top:16px;font-size:15px;color:var(--c-text-2);line-height:1.85;padding-left:16px;border-left:3px solid var(--c-primary-soft)}
.case-metrics{display:flex;flex-wrap:wrap;gap:34px;margin-top:24px;padding-top:22px;border-top:1px solid var(--c-border)}
.case-metrics .cm-num{font-size:23px;font-weight:600;color:var(--c-accent);font-variant-numeric:tabular-nums;line-height:1.2}
.case-metrics .cm-label{font-size:13.5px;color:var(--c-text-3);margin-top:4px}
.case-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.case-mini{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:box-shadow var(--t),transform var(--t);display:flex;flex-direction:column}
.case-mini:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.case-mini h4{font-size:17px;font-weight:600;line-height:1.5;margin-top:12px}
.case-mini p{margin-top:10px;font-size:14.5px;color:var(--c-text-2);line-height:1.75}
.case-mini .cm-foot{margin-top:auto;padding-top:16px;font-size:13.5px;color:var(--c-text-3);display:flex;justify-content:space-between;gap:12px}
.client-row{display:flex;flex-wrap:wrap;justify-content:center;gap:18px 42px;margin-top:52px;padding-top:34px;border-top:1px solid var(--c-border)}
.client-row span{font-size:15px;color:var(--c-text-3);letter-spacing:.5px}

/* ---------- 价格 ---------- */
.price-head{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:44px}
.price-toggle{display:inline-flex;background:var(--c-bg-alt);border-radius:var(--r-pill);padding:4px;gap:4px}
.price-toggle button{border:0;background:transparent;padding:9px 22px;border-radius:var(--r-pill);font-size:14px;color:var(--c-text-2);cursor:pointer;transition:background var(--t),color var(--t),box-shadow var(--t);min-height:38px}
.price-toggle button.active{background:#fff;color:var(--c-primary);font-weight:600;box-shadow:var(--sh-1)}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{position:relative;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);padding:34px 28px;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:box-shadow var(--t),transform var(--t)}
.price-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.price-card.is-featured{border-color:var(--c-primary);box-shadow:var(--sh-2);transform:translateY(-8px)}
.price-card.is-featured:hover{transform:translateY(-10px)}
.price-ribbon{position:absolute;top:-13px;left:28px;background:var(--c-accent);color:#fff;font-size:12.5px;font-weight:500;padding:3px 14px;border-radius:var(--r-pill)}
.price-name{font-size:18px;font-weight:600}
.price-desc{margin-top:8px;font-size:14px;color:var(--c-text-3);line-height:1.7}
.price-amount{margin-top:22px;display:flex;align-items:baseline;gap:6px;font-variant-numeric:tabular-nums}
.price-amount b{font-size:36px;font-weight:600;color:var(--c-dark);line-height:1.1}
.price-amount small{font-size:14px;color:var(--c-text-3)}
.price-list{margin-top:26px;display:grid;gap:0;flex:1}
.price-list li{display:flex;gap:10px;font-size:14.5px;padding:10px 0;color:var(--c-text-2);border-bottom:1px solid var(--c-border);line-height:1.6}
.price-list li:last-child{border-bottom:0}
.price-list li i{font-size:12px;margin-top:.65em;color:var(--c-primary)}
.price-list li.off{color:var(--c-text-3)}
.price-list li.off i{color:#C7CDD4}
.price-card .ui-btn{margin-top:26px;width:100%}
.price-note{margin-top:34px;text-align:center;font-size:14px;color:var(--c-text-2)}

/* ---------- 资讯列表（CMS） ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:box-shadow var(--t),transform var(--t);display:flex;flex-direction:column}
.news-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.news-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-soft)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.6,.3,1)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-meta{display:flex;align-items:center;gap:10px}
.news-title{font-size:17px;font-weight:600;line-height:1.55;color:var(--c-text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title:hover{color:var(--c-primary);text-decoration:none}
.news-summary{font-size:14.5px;color:var(--c-text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--c-text-3)}
.empty-state{grid-column:1/-1;text-align:center;padding:64px 24px;background:#fff;border:1px dashed var(--c-border);border-radius:var(--r-card)}
.empty-state i{font-size:30px;color:var(--c-text-3)}
.empty-state p{margin-top:14px;font-size:15px;color:var(--c-text-2)}
.empty-state a{display:inline-block;margin-top:12px;font-size:14.5px}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--c-border);max-width:920px}
.faq-item{border-bottom:1px solid var(--c-border)}
.faq-q{position:relative;width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0 22px 18px;background:none;border:0;text-align:left;font-size:16px;font-weight:500;color:var(--c-text);cursor:pointer;transition:color var(--t)}
.faq-q::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;background:var(--c-primary);opacity:0;transition:opacity var(--t)}
.faq-item.open .faq-q::before{opacity:1}
.faq-q:hover{color:var(--c-primary)}
.faq-icon{flex:0 0 24px;width:24px;height:24px;display:grid;place-items:center;color:var(--c-text-3);transition:transform var(--t),color var(--t)}
.faq-item.open .faq-icon{transform:rotate(45deg);color:var(--c-primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms cubic-bezier(.2,.6,.3,1)}
.faq-a-inner{padding:0 0 26px 18px;font-size:15px;color:var(--c-text-2);line-height:1.9;max-width:860px}

/* ---------- 底部 CTA ---------- */
.cta-wrap{padding:0 0 88px}
.cta-band{background:linear-gradient(120deg,var(--c-primary) 0%,var(--c-primary-dark) 100%);border-radius:var(--r-lg);padding:52px 56px;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;box-shadow:var(--sh-2)}
.cta-band h2{color:#fff;font-size:28px;font-weight:600;line-height:1.4}
.cta-band p{margin-top:12px;color:#C6D7EA;font-size:15px;max-width:600px;line-height:1.85}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-dark);color:#A9B7C6;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:11px;color:#fff;font-size:19px;font-weight:600}
.footer-brand .brand-mark{background:#fff;color:var(--c-primary)}
.footer-brand:hover{color:#fff;text-decoration:none}
.footer-desc{margin-top:16px;font-size:14.5px;line-height:1.9;color:#93A5B7;max-width:340px}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px}
.footer-links li{margin-bottom:12px}
.footer-links a{color:#A9B7C6;font-size:14.5px}
.footer-links a:hover{color:#fff;text-decoration:none}
.footer-contact li{display:flex;gap:10px;font-size:14.5px;margin-bottom:12px;line-height:1.7}
.footer-contact i{color:#6E8CA8;font-size:13px;margin-top:.6em}
.footer-bottom{margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:#8697A8}
.footer-bottom a{color:#8697A8}
.footer-bottom a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1399px){
  .hero h1{font-size:40px}
}
@media (max-width:1199px){
  .hero-grid{gap:40px}
  .hero h1{font-size:36px}
  .section-head h2{font-size:28px}
  .scene{gap:40px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-grid > div:nth-child(4){grid-column:1/-1}
}
@media (max-width:991px){
  .search-box{display:none}
  .menu-toggle{display:inline-flex}
  .topbar-actions .link-quiet{display:none}
  .hero{padding:48px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero h1{font-size:33px}
  .hero-sub{max-width:none}
  .hero-float{left:16px;bottom:-24px}
  .claims-list{grid-template-columns:repeat(2,1fr);gap:28px 0}
  .claim{padding:0 24px}
  .claim:nth-child(odd){padding-left:0}
  .claim:nth-child(even){border-left:1px solid var(--c-border)}
  .claim:nth-child(3){border-left:0}
  .feature-grid{grid-template-columns:1fr}
  .feature-wide{grid-template-columns:1fr;gap:28px}
  .section{padding:64px 0}
  .scene{grid-template-columns:1fr;gap:28px;margin-bottom:56px}
  .scene--flip .scene-media{order:0}
  .case-grid{grid-template-columns:1fr}
  .case-side{grid-template-rows:auto auto}
  .price-grid{grid-template-columns:1fr;gap:20px}
  .price-card.is-featured{transform:none}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{padding:40px 32px}
  .cta-band h2{font-size:24px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .topbar-inner{height:62px;gap:14px}
  .brand{font-size:17px}
  .brand-mark{width:32px;height:32px;font-size:15px}
  .hero h1{font-size:27px;line-height:1.32}
  .hero-sub{font-size:15.5px}
  .hero-metrics{gap:26px;margin-top:32px}
  .metric-num{font-size:22px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .section-head h2{font-size:23px}
  .section-head h2::before{top:.2em;bottom:.2em}
  .claims{padding:40px 0}
  .claims-list{grid-template-columns:1fr;gap:22px}
  .claim{padding:0!important;border-left:0!important}
  .claim + .claim{padding-top:22px!important;border-top:1px solid var(--c-border);border-left:0}
  .feature-stats{grid-template-columns:1fr 1fr;gap:16px}
  .scene h3{font-size:19px}
  .news-grid{grid-template-columns:1fr}
  .cta-wrap{padding:0 0 56px}
  .cta-band{padding:32px 24px;border-radius:var(--r-card)}
  .cta-band h2{font-size:21px}
  .cta-actions .ui-btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-grid > div:nth-child(1){grid-column:1/-1}
  .footer-grid > div:nth-child(4){grid-column:1/-1}
  .site-footer{padding-top:48px}
  .faq-q{font-size:15px;padding:18px 0 18px 16px}
}
@media (max-width:575px){
  .hero{padding:36px 0 52px}
  .hero h1{font-size:24px}
  .hero-actions{gap:10px}
  .hero-actions .ui-btn{width:100%}
  .hero-visual img{aspect-ratio:4/3}
  .hero-float{position:static;left:auto;bottom:auto;margin-top:-28px;min-width:0;width:calc(100% - 32px);margin-left:16px}
  .feature-card{padding:22px}
  .feature-wide{padding:26px 22px}
  .case-main-body{padding:22px}
  .case-metrics{gap:22px}
  .price-card{padding:28px 22px}
  .news-body{padding:20px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: article */
:root{
  --brand:#1D4E89;
  --brand-dark:#163C6B;
  --brand-light:#E8EFF8;
  --accent:#C05E32;
  --green:#5B7F6B;
  --bg:#F6F5F2;
  --bg-alt:#EDF1F6;
  --dark:#12263A;
  --text:#182230;
  --text-2:#5A6675;
  --text-3:#8A93A0;
  --border:#E3E6EA;
  --white:#FFFFFF;
  --r-card:14px;
  --r-img:20px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(24,34,48,.06), 0 6px 18px -8px rgba(24,34,48,.12);
  --sh-2:0 12px 32px -12px rgba(24,34,48,.18);
  --ease:180ms cubic-bezier(.2,.6,.3,1);
  --sect:88px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",Inter,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand-dark);text-decoration:underline}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
h1,h2,h3,h4{font-weight:600;line-height:1.28;margin:0}
p{margin:0}

/* ---------- header ---------- */
.brandbar{background:var(--white);border-bottom:1px solid var(--border);height:68px;display:flex;align-items:center;position:relative;z-index:1030}
.brandbar-inner{display:flex;align-items:center;gap:22px;width:100%}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:600;color:var(--text);white-space:nowrap}
.brand:hover{text-decoration:none;color:var(--brand-dark)}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:16px;font-weight:600}
.search-box{flex:1;max-width:400px;position:relative}
.search-box input{width:100%;height:40px;border-radius:var(--r-btn);border:1px solid var(--border);background:var(--white);color:var(--text);font-size:14px;padding:0 42px 0 14px;transition:border-color var(--ease),box-shadow var(--ease)}
.search-box input::placeholder{color:var(--text-3)}
.search-box input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(29,78,137,.13)}
.search-box .search-icon{position:absolute;right:14px;top:50%;transform:translateY(-50%);color:var(--text-3);font-size:14px}
.brandbar-actions{margin-left:auto;display:flex;align-items:center;gap:18px}
.brandbar-link{font-size:14px;color:var(--text-2)}
.brandbar-link:hover{color:var(--brand)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:500;border-radius:var(--r-btn);padding:12px 22px;border:1px solid transparent;transition:transform var(--ease),background var(--ease),color var(--ease),box-shadow var(--ease),border-color var(--ease);cursor:pointer;min-height:44px}
.btn-primary-c{background:var(--brand);color:#fff}
.btn-primary-c:hover{background:var(--brand-dark);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);text-decoration:none}
.btn-sm{padding:9px 16px;font-size:14px;min-height:40px}
.btn-link-c{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:500}
.btn-link-c i{transition:transform var(--ease)}
.btn-link-c:hover{text-decoration:none;color:var(--brand-dark)}
.btn-link-c:hover i{transform:translateX(2px)}
.hamburger{display:none;width:44px;height:44px;border:1px solid var(--border);border-radius:var(--r-btn);background:#fff;color:var(--text-2);align-items:center;justify-content:center;font-size:17px}

/* ---------- channel nav ---------- */
.channelbar{position:sticky;top:0;z-index:1020;background:var(--white);border-bottom:1px solid var(--border);transition:box-shadow var(--ease)}
.channelbar.is-stuck{box-shadow:var(--sh-1)}
.channelbar-inner{display:flex;align-items:center;height:52px}
.channel-list{display:flex;align-items:center;gap:8px;list-style:none;margin:0;padding:0;width:100%;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;-ms-overflow-style:none}
.channel-list::-webkit-scrollbar{display:none}
.channel-link{display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:var(--r-pill);font-size:15px;color:var(--text-2);white-space:nowrap;scroll-snap-align:start;transition:background var(--ease),color var(--ease)}
.channel-link:hover{background:var(--brand-light);color:var(--brand);text-decoration:none}
.channel-link.active{background:var(--brand);color:#fff}
.channelbar.is-stuck .channelbar-inner{height:46px}

/* ---------- drawer ---------- */
.drawer{width:300px;border:0}
.drawer .offcanvas-header{border-bottom:1px solid var(--border);padding:18px 20px}
.drawer-list{list-style:none;margin:0;padding:8px 0}
.drawer-list li a{display:flex;align-items:center;height:48px;padding:0 20px;font-size:15px;color:var(--text)}
.drawer-list li a:hover{background:var(--brand-light);color:var(--brand);text-decoration:none}
.drawer-group{padding:14px 20px 6px;font-size:13px;color:var(--text-3)}

/* ---------- page head ---------- */
.page-head{background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);border-bottom:1px solid var(--border)}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);padding:24px 0 0}
.crumbs a{color:var(--brand)}
.crumbs .sep{color:#C7CDD5}
.pill{display:inline-flex;align-items:center;gap:6px;border-radius:var(--r-pill);font-size:13px;padding:4px 12px;background:var(--brand-light);color:var(--brand);line-height:1.6}
.pill-accent{background:#FBEDE5;color:var(--accent)}
.page-head h1{font-size:36px;line-height:1.28;margin:16px 0 14px;letter-spacing:.2px;max-width:900px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;font-size:14px;color:var(--text-3);padding-bottom:26px}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{font-size:13px;color:var(--text-3)}

/* ---------- layout ---------- */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:44px;align-items:start;padding:44px 0 0}
.article-main{max-width:780px;min-width:0}

/* ---------- article body ---------- */
.article-card{background:var(--white);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:36px 40px 40px}
.article-body{font-size:16px;color:var(--text);line-height:1.9;word-wrap:break-word}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em;text-indent:0}
.article-body h2{font-size:24px;line-height:1.35;margin:44px 0 16px;padding-left:14px;position:relative;scroll-margin-top:84px}
.article-body h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--brand)}
.article-body h3{font-size:19px;line-height:1.4;margin:32px 0 12px;scroll-margin-top:84px}
.article-body h4{font-size:17px;margin:24px 0 10px}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em}
.article-body li{margin:.4em 0}
.article-body li::marker{color:var(--brand)}
.article-body blockquote{margin:26px 0;padding:20px 22px;background:var(--brand-light);border-left:3px solid var(--brand);border-radius:0 10px 10px 0;color:var(--text-2)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:26px auto}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid #EAEDF1;padding:10px 14px;text-align:left;vertical-align:top}
.article-body th{background:var(--brand-light);color:var(--brand-dark);font-weight:600}
.article-body tbody tr:nth-child(even) td{background:#FAFBFC}
.article-body pre{background:var(--dark);color:#E6EDF5;border-radius:12px;padding:18px 20px;overflow-x:auto;font-size:13.5px;line-height:1.7;margin:24px 0}
.article-body code{background:#F1F4F8;border-radius:6px;padding:2px 6px;font-size:13.5px;color:var(--brand-dark)}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body a{color:var(--brand);text-decoration:underline}
.article-body a:hover{color:var(--brand-dark)}
.article-body hr{border:0;border-top:1px solid var(--border);margin:34px 0}

/* ---------- sidebar ---------- */
.sidebar{position:sticky;top:76px;display:flex;flex-direction:column;gap:22px}
.side-card{background:var(--white);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:22px}
.side-title{font-size:15px;font-weight:600;color:var(--text);margin:0 0 14px;display:flex;align-items:center;gap:8px}
.side-title i{color:var(--brand);font-size:14px}
.toc-list{list-style:none;margin:0;padding:0;max-height:340px;overflow:auto;border-left:1px solid var(--border)}
.toc-list li{margin:0}
.toc-list a{display:block;padding:7px 0 7px 14px;font-size:14px;color:var(--text-2);line-height:1.6;border-left:2px solid transparent;margin-left:-1px}
.toc-list a:hover{color:var(--brand);background:#F7FAFD;text-decoration:none}
.toc-list a.active{color:var(--brand);border-left-color:var(--brand);font-weight:500}
.toc-list .toc-h3 a{padding-left:28px;font-size:13.5px;color:var(--text-3)}
.side-list{list-style:none;margin:0;padding:0}
.side-list li+li{border-top:1px solid var(--border)}
.side-list a{display:block;padding:12px 0;font-size:14px;color:var(--text);line-height:1.7}
.side-list a:hover{color:var(--brand);text-decoration:none}
.side-list span{display:block;font-size:13px;color:var(--text-3);margin-top:2px}
.side-cta{background:var(--dark);border-color:var(--dark);color:#D8E2EE}
.side-cta .side-title{color:#fff}
.side-cta .side-title i{color:#8FB6E0}
.side-cta p{font-size:14px;line-height:1.8;color:#A9BACD;margin:0 0 16px}
.side-cta .btn{width:100%;background:#fff;color:var(--brand-dark)}
.side-cta .btn:hover{background:var(--brand-light);color:var(--brand-dark);text-decoration:none}

/* ---------- article footer blocks ---------- */
.block{margin-top:40px}
.block-title{font-size:20px;margin-bottom:18px;display:flex;align-items:center;gap:10px}
.block-title::before{content:"";width:4px;height:18px;border-radius:2px;background:var(--brand)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--r-pill);background:var(--white);border:1px solid var(--border);font-size:13px;color:var(--text-2);transition:all var(--ease)}
.tag:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-light);text-decoration:none}
.nav-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.nav-card{display:block;background:var(--white);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:20px 22px;transition:all var(--ease)}
.nav-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);text-decoration:none;border-color:#D3DCE8}
.nav-card .nc-label{font-size:13px;color:var(--accent);display:flex;align-items:center;gap:6px;margin-bottom:8px}
.nav-card h4{font-size:17px;color:var(--text);margin-bottom:6px}
.nav-card p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0}
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rec-card{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:all var(--ease)}
.rec-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);text-decoration:none}
.rec-card .rec-media{aspect-ratio:16/10;background:var(--brand-light);overflow:hidden}
.rec-card .rec-media img{width:100%;height:100%;object-fit:cover}
.rec-card .rec-body{padding:18px 20px 20px}
.rec-card h4{font-size:16px;line-height:1.5;color:var(--text);margin-bottom:8px}
.rec-card p{font-size:13.5px;color:var(--text-2);line-height:1.75}
.rec-card .rec-foot{margin-top:12px;font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:6px}
.cta-card{background:var(--dark);border-radius:var(--r-img);padding:34px 36px;display:flex;align-items:center;justify-content:space-between;gap:26px;color:#fff}
.cta-card h3{font-size:22px;color:#fff;margin-bottom:8px}
.cta-card p{font-size:14.5px;color:#A9BACD;margin:0;max-width:640px}
.cta-card .btn{background:#fff;color:var(--brand-dark);white-space:nowrap}
.cta-card .btn:hover{background:var(--brand-light);color:var(--brand-dark);text-decoration:none}
.back-links{display:flex;flex-wrap:wrap;gap:22px;font-size:14px;padding:6px 0 0}

/* ---------- empty state ---------- */
.empty{background:var(--white);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:56px 40px;text-align:center}
.empty i{font-size:36px;color:#B9C6D6}
.empty h3{font-size:20px;margin:16px 0 10px}
.empty p{color:var(--text-2);font-size:15px;margin-bottom:22px}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:#C6D3E1;margin-top:88px;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:600;margin-bottom:14px}
.footer-brand:hover{color:#fff;text-decoration:none}
.footer-brand .brand-mark{background:#2A5C93}
.footer-desc{font-size:14px;line-height:1.9;color:#9EB0C4;margin:0}
.footer-title{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px}
.footer-links,.footer-contact{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:#9EB0C4}
.footer-links a:hover{color:#fff}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:#9EB0C4;margin-bottom:12px;line-height:1.7}
.footer-contact i{margin-top:5px;color:#7FA3C8}
.footer-bottom{margin-top:44px;padding:22px 0 28px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;font-size:13.5px;color:#8B9DB1}
.footer-bottom a{color:#A9BACD}
.footer-bottom a:hover{color:#fff}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .layout{grid-template-columns:minmax(0,1fr) 300px;gap:34px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:28px}
}
@media (max-width:991px){
  :root{--sect:64px}
  .search-box{display:none}
  .brandbar-link{display:none}
  .hamburger{display:inline-flex}
  .layout{grid-template-columns:1fr;padding-top:32px}
  .article-main{max-width:none}
  .sidebar{position:static}
  .page-head h1{font-size:30px}
  .article-card{padding:26px 24px 30px}
  .rec-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cta-card{flex-direction:column;align-items:flex-start;padding:28px}
}
@media (max-width:767px){
  .brandbar{height:62px}
  .brand{font-size:17px}
  .page-head h1{font-size:26px}
  .nav-cards{grid-template-columns:1fr}
  .rec-grid{grid-template-columns:1fr}
  .site-footer{padding-top:48px;margin-top:64px}
  .footer-grid{grid-template-columns:1fr}
  .article-body h2{font-size:21px;margin-top:34px}
  .article-body h3{font-size:18px}
}
@media (max-width:575px){
  .container{padding:0 18px}
  .page-head h1{font-size:23px}
  .article-card{padding:22px 18px 26px}
  .article-body{font-size:15.5px}
  .article-meta{gap:12px;font-size:13px}
  .btn{padding:11px 18px;font-size:14.5px}
  .cta-card h3{font-size:19px}
}

/* roulang page: category1 */
:root{
  --brand:#1D4E89;
  --brand-dark:#163C6B;
  --brand-soft:#E8EFF8;
  --accent:#C05E32;
  --moss:#5B7F6B;
  --bg:#F6F5F2;
  --bg-alt:#EDF1F6;
  --dark:#12263A;
  --card:#FFFFFF;
  --text:#182230;
  --text-2:#5A6675;
  --text-3:#8A93A0;
  --border:#E3E6EA;
  --radius-card:14px;
  --radius-large:20px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(24,34,48,.06), 0 6px 18px -8px rgba(24,34,48,.12);
  --shadow-2:0 12px 32px -12px rgba(24,34,48,.18);
  --ease:cubic-bezier(.2,.6,.3,1);
  --dur:180ms;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:var(--brand-dark);text-decoration:underline;}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.28;color:var(--text);}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{max-width:1240px;margin:0 auto;padding:0 24px;}
.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;
  padding:10px 16px;border-radius:0 0 8px 0;z-index:2000;
}
.skip-link:focus{left:0;color:#fff;text-decoration:none;}

/* ---------- header ---------- */
.site-header{position:relative;z-index:1030;}
.topbar{background:#fff;border-bottom:1px solid var(--border);}
.topbar-inner{
  display:flex;align-items:center;gap:24px;min-height:68px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:600;
  letter-spacing:0;
}
.brand-text{font-size:19px;font-weight:600;color:var(--text);letter-spacing:.5px;}
.brand:hover{text-decoration:none;}
.brand:hover .brand-text{color:var(--brand);}
.search{
  flex:1 1 auto;max-width:420px;position:relative;display:flex;align-items:center;
}
.search i{position:absolute;left:14px;color:var(--text-3);font-size:14px;}
.search input{
  width:100%;height:42px;border:1px solid var(--border);background:#fff;
  border-radius:var(--radius-btn);padding:0 14px 0 38px;font-size:14px;color:var(--text);
  transition:border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.search input::placeholder{color:var(--text-3);}
.search input:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);
}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:18px;flex:0 0 auto;}
.ghost-link{
  font-size:14px;color:var(--text-2);padding:8px 2px;
}
.ghost-link:hover{color:var(--brand);text-decoration:none;}
.btn-ink{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:#fff;border:1px solid var(--brand);
  border-radius:var(--radius-btn);padding:11px 22px;font-size:15px;font-weight:500;
  transition:background var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.btn-ink:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow-1);}
.btn-outline-ink{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--brand);border:1px solid var(--brand);
  border-radius:var(--radius-btn);padding:11px 22px;font-size:15px;font-weight:500;
  transition:background var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn-outline-ink:hover{background:var(--brand-soft);color:var(--brand-dark);text-decoration:none;transform:translateY(-1px);}
.btn-light-ink{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--brand);border:1px solid #fff;
  border-radius:var(--radius-btn);padding:11px 22px;font-size:15px;font-weight:500;
}
.btn-light-ink:hover{background:var(--brand-soft);color:var(--brand-dark);text-decoration:none;}
.text-link{font-size:15px;font-weight:500;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.text-link i{transition:transform var(--dur) var(--ease);font-size:12px;}
.text-link:hover{text-decoration:none;color:var(--brand-dark);}
.text-link:hover i{transform:translateX(3px);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--border);background:#fff;
  border-radius:10px;color:var(--text);align-items:center;justify-content:center;
}
.channelbar{
  background:#fff;border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:1020;
  transition:box-shadow var(--dur) var(--ease);
}
.channelbar.scrolled{box-shadow:var(--shadow-1);}
.channelbar-inner{display:flex;align-items:center;}
.channel-list{
  display:flex;align-items:center;gap:8px;overflow-x:auto;
  padding:8px 0;scroll-snap-type:x mandatory;-ms-overflow-style:none;scrollbar-width:none;
  width:100%;
}
.channel-list::-webkit-scrollbar{display:none;}
.channel-link{
  flex:0 0 auto;scroll-snap-align:start;
  display:inline-flex;align-items:center;height:36px;padding:0 18px;
  border-radius:999px;font-size:15px;color:var(--text-2);
  transition:background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.channel-link:hover{background:var(--brand-soft);color:var(--brand);text-decoration:none;}
.channel-link.active{background:var(--brand);color:#fff;}
.channel-link.active:hover{background:var(--brand-dark);color:#fff;}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(18,38,58,.42);opacity:0;visibility:hidden;
  transition:opacity var(--dur) var(--ease), visibility var(--dur) var(--ease);z-index:1090;
}
.drawer-mask.show{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;left:0;height:100%;width:288px;background:#fff;z-index:1100;
  transform:translateX(-100%);transition:transform 220ms var(--ease);
  display:flex;flex-direction:column;overflow-y:auto;
}
.drawer.show{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;border-bottom:1px solid var(--border);
}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--border);background:#fff;border-radius:10px;
  color:var(--text-2);
}
.drawer-group{padding:14px 20px 4px;font-size:12px;color:var(--text-3);letter-spacing:.08em;}
.drawer nav a{
  display:flex;align-items:center;height:48px;padding:0 20px;color:var(--text);
  font-size:15px;border-left:3px solid transparent;
}
.drawer nav a:hover{background:var(--bg-alt);text-decoration:none;color:var(--brand);}
.drawer nav a.active{border-left-color:var(--brand);background:var(--brand-soft);color:var(--brand);}
.drawer-foot{padding:20px;margin-top:auto;}

/* ---------- hero ---------- */
.page-hero{
  background:linear-gradient(180deg,#FFFFFF 0%, #F6F5F2 100%);
  border-bottom:1px solid var(--border);
  padding:28px 0 0;
}
.breadcrumb-ink{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);padding:6px 0 18px;
}
.breadcrumb-ink a{color:var(--brand);}
.breadcrumb-ink a:hover{text-decoration:underline;}
.breadcrumb-ink .sep{color:var(--text-3);}
.breadcrumb-ink .current{color:var(--text-2);}
.hero-grid{
  display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;
  padding-bottom:36px;
}
.pill{
  display:inline-flex;align-items:center;gap:6px;border-radius:999px;
  font-size:13px;padding:4px 12px;line-height:1.6;
}
.pill-accent{background:#FBEDE6;color:var(--accent);border:1px solid #F0D6C8;}
.pill-brand{background:var(--brand-soft);color:var(--brand);border:1px solid #D5E2F3;}
.page-hero h1{
  font-size:44px;line-height:1.24;margin:18px 0 16px;letter-spacing:-.5px;
}
.page-hero h1 em{font-style:normal;color:var(--brand);}
.hero-lead{font-size:17px;color:var(--text-2);max-width:620px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.hero-media{
  border-radius:var(--radius-large);overflow:hidden;box-shadow:var(--shadow-2);
  border:1px solid var(--border);background:var(--brand-soft);
}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.metric-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--border);
}
.metric{padding:20px 20px 26px;border-right:1px solid var(--border);}
.metric:last-child{border-right:none;}
.metric-num{
  font-size:28px;font-weight:600;color:var(--brand);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.metric-num span{font-size:15px;margin-left:2px;color:var(--brand);}
.metric-label{font-size:14px;color:var(--text-3);margin-top:4px;}

/* ---------- layout split ---------- */
.layout-split{
  display:grid;grid-template-columns:250px minmax(0,1fr);gap:48px;
  padding-top:64px;padding-bottom:24px;align-items:start;
}
.side-nav{
  position:sticky;top:76px;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);padding:12px 0;overflow:hidden;
}
.side-nav .side-title{
  font-size:12px;color:var(--text-3);letter-spacing:.08em;padding:8px 22px 10px;
}
.side-nav a{
  display:flex;align-items:center;gap:10px;min-height:46px;padding:8px 22px;
  font-size:15px;color:var(--text-2);border-left:3px solid transparent;
}
.side-nav a i{font-size:13px;color:var(--text-3);width:16px;text-align:center;}
.side-nav a:hover{background:var(--bg-alt);color:var(--brand);text-decoration:none;}
.side-nav a:hover i{color:var(--brand);}
.side-nav a.active{
  border-left-color:var(--brand);background:var(--brand-soft);color:var(--brand);font-weight:500;
}
.side-nav a.active i{color:var(--brand);}
.side-note{
  margin:12px 0 0;padding:16px 22px;border-top:1px solid var(--border);
  font-size:13px;color:var(--text-3);line-height:1.75;
}

.block{padding:0 0 64px;scroll-margin-top:86px;}
.block-head{margin-bottom:24px;}
.block-head h2{
  font-size:32px;line-height:1.28;position:relative;padding-left:16px;
}
.block-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;
  border-radius:2px;background:var(--brand);
}
.block-head .sub{color:var(--text-2);font-size:15px;margin:12px 0 0;max-width:760px;}
.lead-p{font-size:16.5px;color:var(--text-2);line-height:1.9;}
.lead-p strong{color:var(--text);font-weight:600;}
.check-list{display:grid;gap:12px;margin-top:20px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--text-2);line-height:1.8;}
.check-list i{color:var(--brand);font-size:15px;margin-top:6px;flex:0 0 auto;}

/* feature grid */
.feature-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:24px;grid-auto-rows:1fr;
}
.feature-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-1);
  transition:box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
  display:flex;flex-direction:column;
}
.feature-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.feature-card.span-2{grid-row:span 2;}
.feature-ico{
  width:44px;height:44px;border-radius:12px;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;color:var(--brand);
  font-size:18px;margin-bottom:16px;
}
.feature-card h3{font-size:19px;margin-bottom:10px;}
.feature-card p{font-size:15px;color:var(--text-2);margin-bottom:14px;}
.mini-list{display:grid;gap:9px;margin:0 0 16px;}
.mini-list li{display:flex;gap:9px;font-size:14px;color:var(--text-2);line-height:1.7;}
.mini-list li::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);
  margin-top:9px;flex:0 0 auto;
}
.feature-card .text-link{margin-top:auto;}

/* steps */
.steps{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;
}
.step{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);}
.step-idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:999px;background:var(--brand);color:#fff;
  font-size:15px;font-weight:600;font-variant-numeric:tabular-nums;margin-bottom:14px;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--text-2);margin:0;}
.step::after{
  content:"";position:absolute;top:44px;right:-24px;width:24px;height:2px;
  background:linear-gradient(90deg, var(--brand) 0%, rgba(29,78,137,.15) 100%);
}
.step:last-child::after{display:none;}

/* data band */
.data-band{
  background:var(--dark);border-radius:var(--radius-large);padding:36px;
  display:grid;grid-template-columns:repeat(3,1fr);gap:28px;color:#fff;
}
.data-band .d-num{
  font-size:34px;font-weight:600;color:#fff;font-variant-numeric:tabular-nums;line-height:1.2;
}
.data-band .d-num span{font-size:16px;margin-left:3px;}
.data-band .d-label{font-size:14px;color:#9FB3C8;margin-top:6px;line-height:1.7;}
.data-band .d-item{border-left:2px solid rgba(255,255,255,.16);padding-left:18px;}
.data-band .d-item:first-child{border-left-color:var(--accent);}

/* faq */
.faq-list{border-top:1px solid var(--border);}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;gap:16px;align-items:flex-start;
  padding:20px 0 20px 0;font-size:16px;font-weight:500;color:var(--text);
  position:relative;padding-left:0;transition:color var(--dur) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .q-mark{
  flex:0 0 auto;width:3px;align-self:stretch;border-radius:2px;background:transparent;
  transition:background var(--dur) var(--ease);margin-right:14px;
}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary .q-mark{background:var(--brand);}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary .caret{margin-left:auto;color:var(--text-3);font-size:13px;transition:transform var(--dur) var(--ease);}
.faq-item[open] summary .caret{transform:rotate(180deg);color:var(--brand);}
.faq-answer{padding:0 0 22px 17px;font-size:15px;color:var(--text-2);line-height:1.9;max-width:820px;}

/* read cards */
.read-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.read-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.read-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.read-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft);}
.read-thumb img{width:100%;height:100%;object-fit:cover;}
.read-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.read-body .pill{align-self:flex-start;margin-bottom:12px;}
.read-body h3{font-size:17px;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.read-body h3 a{color:var(--text);}
.read-body h3 a:hover{color:var(--brand);text-decoration:none;}
.read-body p{font-size:14.5px;color:var(--text-2);margin-bottom:14px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.read-meta{font-size:14px;color:var(--text-3);margin-top:auto;display:flex;align-items:center;gap:8px;}
.read-meta i{font-size:13px;}

/* cta band */
.cta-band{padding:0 0 88px;}
.cta-inner{
  background:var(--dark);border-radius:var(--radius-large);padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{font-size:28px;color:#fff;margin-bottom:10px;}
.cta-inner p{color:#AFBFD0;font-size:15.5px;margin:0;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* footer */
.site-footer{background:var(--dark);color:#C9D5E1;padding:64px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1.3fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:#fff;color:var(--dark);}
.footer-brand span:not(.brand-mark){font-size:18px;font-weight:600;color:#fff;}
.footer-brand:hover{text-decoration:none;}
.footer-desc{font-size:14px;color:#9FB3C8;line-height:1.85;max-width:340px;}
.footer-title{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:#C9D5E1;}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:#C9D5E1;margin-bottom:12px;line-height:1.7;}
.footer-contact i{color:#7C93AB;margin-top:6px;font-size:13px;flex:0 0 auto;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:#8FA3B8;
}
.footer-bottom a{color:#C9D5E1;}
.footer-bottom a:hover{color:#fff;}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .layout-split{grid-template-columns:220px minmax(0,1fr);gap:32px;}
  .page-hero h1{font-size:38px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1.2fr;gap:30px;}
  .footer-contact-col{grid-column:span 3;}
}
@media (max-width:992px){
  .search{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-grid{grid-template-columns:1fr;gap:28px;}
  .hero-media img{aspect-ratio:16/9;}
  .layout-split{grid-template-columns:minmax(0,1fr);padding-top:44px;}
  .side-nav{position:static;padding:10px;}
  .side-nav .side-title{padding:6px 12px 8px;}
  .side-nav ul{display:flex;gap:8px;overflow-x:auto;-ms-overflow-style:none;scrollbar-width:none;}
  .side-nav ul::-webkit-scrollbar{display:none;}
  .side-nav a{
    border-left:none;border-radius:999px;background:var(--bg-alt);
    padding:0 16px;white-space:nowrap;min-height:44px;justify-content:center;
  }
  .side-nav a.active{background:var(--brand);color:#fff;}
  .side-nav a.active i{color:#fff;}
  .side-note{margin-top:10px;padding:14px 12px;}
  .steps{grid-template-columns:1fr 1fr;}
  .step::after{display:none;}
  .feature-grid{grid-template-columns:1fr;grid-auto-rows:auto;}
  .feature-card.span-2{grid-row:auto;}
  .read-grid{grid-template-columns:1fr 1fr;}
  .data-band{grid-template-columns:1fr;gap:22px;padding:30px;}
  .block-head h2{font-size:26px;}
  .cta-inner{padding:32px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .page-hero h1{font-size:30px;letter-spacing:0;}
  .hero-lead{font-size:15.5px;}
  .metric-strip{grid-template-columns:1fr 1fr;}
  .metric:nth-child(2){border-right:none;}
  .metric{border-bottom:1px solid var(--border);}
  .metric:nth-child(3),.metric:nth-child(4){border-bottom:none;}
  .read-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-contact-col{grid-column:span 2;}
  .cta-inner h2{font-size:22px;}
}
@media (max-width:576px){
  .container{padding:0 18px;}
  .topbar-inner{min-height:62px;gap:12px;}
  .brand-text{font-size:17px;}
  .page-hero{padding-top:18px;}
  .page-hero h1{font-size:27px;}
  .metric-strip{grid-template-columns:1fr;}
  .metric{border-right:none;}
  .metric:nth-child(3){border-bottom:1px solid var(--border);}
  .steps{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-contact-col{grid-column:auto;}
  .cta-inner{padding:26px 22px;}
  .block{padding-bottom:48px;}
  .data-band .d-num{font-size:28px;}
  .hero-actions .btn-ink,.hero-actions .btn-outline-ink{width:100%;}
}

/* roulang page: category2 */
:root{
  --brand:#1D4E89;
  --brand-dark:#163C6B;
  --brand-light:#E8EFF8;
  --accent:#C05E32;
  --green:#5B7F6B;
  --bg:#F6F5F2;
  --bg-alt:#EDF1F6;
  --dark:#12263A;
  --card:#FFFFFF;
  --text:#182230;
  --text-2:#5A6675;
  --text-3:#8A93A0;
  --border:#E3E6EA;
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --sh1:0 1px 2px rgba(24,34,48,.06),0 6px 18px -8px rgba(24,34,48,.12);
  --sh2:0 12px 32px -12px rgba(24,34,48,.18);
  --ease:cubic-bezier(.2,.6,.3,1);
  --section-gap:88px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color 180ms var(--ease)}
a:hover{color:var(--brand-dark);text-decoration:underline}
p{margin:0 0 1.1em}
h1,h2,h3,h4{margin:0 0 .6em;font-weight:600;line-height:1.28;letter-spacing:.01em}
h1{font-size:44px}
h2{font-size:32px}
h3{font-size:22px}
ul,ol{margin:0 0 1em;padding-left:1.15em}
li{margin-bottom:.45em}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px}

/* ---------- 品牌行 ---------- */
.brandbar{background:#fff;border-bottom:1px solid var(--border);position:relative;z-index:1030}
.brandbar-inner{display:flex;align-items:center;gap:24px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:600;color:var(--text);letter-spacing:.02em;white-space:nowrap}
.brand:hover{text-decoration:none;color:var(--brand-dark)}
.brand-mark{
  width:34px;height:34px;border-radius:9px;background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:17px;font-weight:600;flex:0 0 auto;
}
.brandbar .search{flex:1 1 auto;max-width:420px;position:relative}
.brandbar .search input{
  width:100%;height:42px;border:1px solid var(--border);border-radius:var(--r-btn);
  padding:0 44px 0 14px;background:#fff;color:var(--text);transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.brandbar .search input::placeholder{color:var(--text-3)}
.brandbar .search input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-light);outline:none}
.brandbar .search button{
  position:absolute;right:4px;top:4px;width:34px;height:34px;border:0;background:transparent;
  color:var(--text-2);border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;
}
.brandbar .search button:hover{background:var(--brand-light);color:var(--brand)}
.brand-actions{margin-left:auto;display:flex;align-items:center;gap:18px}
.text-link{font-size:14px;color:var(--text-2);white-space:nowrap}
.text-link:hover{color:var(--brand);text-decoration:none}
.btn-app{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:42px;padding:11px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:500;
  border:1px solid transparent;cursor:pointer;transition:all 180ms var(--ease);white-space:nowrap;
}
.btn-app-primary{background:var(--brand);color:#fff}
.btn-app-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);text-decoration:none}
.btn-app-ghost{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-app-ghost:hover{background:var(--brand-light);color:var(--brand-dark);text-decoration:none}
.btn-app-light{background:#fff;color:var(--brand)}
.btn-app-light:hover{background:#fff;color:var(--brand-dark);transform:translateY(-1px);text-decoration:none}
.btn-app-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-app-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;text-decoration:none}
.hamburger{display:none;width:44px;height:44px;border:1px solid var(--border);background:#fff;border-radius:var(--r-btn);color:var(--text);align-items:center;justify-content:center;cursor:pointer}
.search-toggle{display:none;width:44px;height:44px;border:1px solid var(--border);background:#fff;border-radius:var(--r-btn);color:var(--text);align-items:center;justify-content:center;cursor:pointer}

/* ---------- 频道行 ---------- */
.channelbar{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:1020;transition:box-shadow 180ms var(--ease)}
.channelbar.is-stuck{box-shadow:var(--sh1)}
.channelbar-inner{display:flex;align-items:center;min-height:52px}
.channel-list{
  list-style:none;display:flex;gap:8px;margin:0;padding:0;
  overflow-x:auto;scroll-snap-type:x mandatory;-ms-overflow-style:none;scrollbar-width:none;
  width:100%;padding-top:7px;padding-bottom:7px;
}
.channel-list::-webkit-scrollbar{display:none}
.channel-link{
  display:inline-block;padding:7px 16px;border-radius:999px;font-size:15px;color:var(--text-2);
  white-space:nowrap;scroll-snap-align:start;transition:all 180ms var(--ease);min-height:36px;line-height:22px;
}
.channel-link:hover{background:var(--brand-light);color:var(--brand-dark);text-decoration:none}
.channel-link.active{background:var(--brand);color:#fff}
.channel-link.active:hover{background:var(--brand-dark);color:#fff}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(18,38,58,.42);opacity:0;visibility:hidden;transition:all 220ms var(--ease);z-index:1050}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:min(84vw,320px);background:#fff;z-index:1060;
  transform:translateX(-102%);transition:transform 240ms var(--ease);overflow-y:auto;padding:20px 0 32px;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 20px 18px;border-bottom:1px solid var(--border)}
.drawer-close{width:40px;height:40px;border:1px solid var(--border);background:#fff;border-radius:var(--r-btn);cursor:pointer;color:var(--text-2)}
.drawer-group{padding:16px 20px 4px;font-size:13px;color:var(--text-3);letter-spacing:.06em}
.drawer-list{list-style:none;margin:0;padding:0}
.drawer-list li{margin:0}
.drawer-list a{display:flex;align-items:center;min-height:48px;padding:0 20px;font-size:16px;color:var(--text)}
.drawer-list a:hover,.drawer-list a.active{background:var(--brand-light);color:var(--brand-dark);text-decoration:none}
.drawer-cta{padding:18px 20px 0}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--bg-alt);border-bottom:1px solid var(--border)}
.crumb{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:12px 0;font-size:13px;color:var(--text-3)}
.crumb li{display:flex;align-items:center;gap:8px;margin:0}
.crumb li+li::before{content:"/";color:var(--text-3)}
.crumb a{color:var(--brand)}
.crumb .current{color:var(--text-2)}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  background-image:linear-gradient(102deg,rgba(18,38,58,.92) 0%,rgba(18,38,58,.78) 46%,rgba(18,38,58,.42) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  color:#fff;
  padding:88px 0 76px;
}
.page-hero .hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:5px 14px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);font-size:13px;color:#fff;margin-bottom:20px;
}
.page-hero h1{color:#fff;max-width:860px;margin-bottom:18px}
.page-hero .hero-sub{font-size:17px;line-height:1.9;color:rgba(255,255,255,.86);max-width:720px;margin-bottom:28px}
.page-hero .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:8px}
.page-hero .hero-note{font-size:13px;color:rgba(255,255,255,.66);margin:0}

/* ---------- 指标条 ---------- */
.metric-bar{background:var(--dark);color:#fff;padding:0}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.metric-item{padding:28px 24px;border-right:1px solid rgba(255,255,255,.1)}
.metric-item:last-child{border-right:0}
.metric-num{font-size:30px;font-weight:600;color:#fff;font-variant-numeric:tabular-nums;letter-spacing:.01em;line-height:1.2}
.metric-num .unit{font-size:15px;font-weight:400;color:rgba(255,255,255,.7);margin-left:4px}
.metric-label{font-size:14px;color:rgba(255,255,255,.68);margin-top:4px}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section-gap) 0}
.section-alt{background:var(--bg-alt)}
.section-white{background:#fff}
.section-head{max-width:820px;margin-bottom:48px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{position:relative;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:2px;background:var(--brand)}
.section-head.center h2{padding-left:0}
.section-head.center h2::before{display:none}
.section-head .lead{font-size:16px;color:var(--text-2);margin:0}
.eyebrow{display:inline-block;font-size:13px;color:var(--accent);letter-spacing:.08em;margin-bottom:10px;font-weight:600}

/* ---------- 交替图文 ---------- */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:72px}
.feature-row:last-child{margin-bottom:0}
.feature-row.reverse .feature-media{order:2}
.feature-row.reverse .feature-body{order:1}
.feature-media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh1);aspect-ratio:16/10;background:var(--brand-light)}
.feature-media img{width:100%;height:100%;object-fit:cover}
.feature-media .media-badge{
  position:absolute;left:18px;bottom:18px;background:#fff;color:var(--brand);border-radius:999px;
  padding:6px 14px;font-size:13px;font-weight:600;box-shadow:var(--sh1);
}
.feature-body h3{margin-bottom:12px}
.feature-body p{color:var(--text-2);margin-bottom:16px}
.feature-list{list-style:none;margin:0 0 18px;padding:0}
.feature-list li{display:flex;gap:10px;align-items:flex-start;margin-bottom:10px;font-size:15.5px;color:var(--text)}
.feature-list li i{color:var(--brand);margin-top:6px;font-size:15px;flex:0 0 auto}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-block;padding:4px 10px;border-radius:999px;font-size:13px;
  background:var(--brand-light);color:var(--brand);
}
.tag-accent{background:transparent;border:1px solid var(--accent);color:var(--accent)}
.tag-green{background:rgba(91,127,107,.12);color:var(--green)}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.info-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh1);transition:all 180ms var(--ease);display:flex;flex-direction:column;height:100%;
}
.info-card:hover{box-shadow:var(--sh2);transform:translateY(-2px)}
.info-card .ic-icon{
  width:44px;height:44px;border-radius:11px;background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:16px;
}
.info-card h3{font-size:18px;margin-bottom:10px}
.info-card p{font-size:15px;color:var(--text-2);margin-bottom:16px}
.info-card .card-foot{margin-top:auto;font-size:14px;font-weight:500}
.info-card .card-foot i{transition:transform 180ms var(--ease);margin-left:4px}
.info-card:hover .card-foot i{transform:translateX(3px)}

/* ---------- 对比表 ---------- */
.table-wrap{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh1)}
table.compare{width:100%;border-collapse:collapse;font-size:15px}
table.compare thead th{
  background:var(--brand-light);color:var(--brand-dark);font-weight:600;text-align:left;
  padding:16px 20px;border-bottom:1px solid var(--border);white-space:nowrap;
}
table.compare tbody td{padding:15px 20px;border-bottom:1px solid var(--border);color:var(--text-2);vertical-align:top}
table.compare tbody tr:nth-child(even){background:#FAFBFC}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare td:first-child{color:var(--text);font-weight:500;white-space:nowrap}
.dot-yes{color:var(--green);margin-right:6px}
.dot-no{color:var(--text-3);margin-right:6px}
.table-note{font-size:13px;color:var(--text-3);margin-top:14px}

/* ---------- 步骤流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;margin-top:12px}
.steps::before{
  content:"";position:absolute;left:6%;right:6%;top:26px;height:2px;
  background:repeating-linear-gradient(90deg,var(--border) 0 10px,transparent 10px 18px);
}
.step{position:relative;padding-top:0;background:transparent}
.step-num{
  width:52px;height:52px;border-radius:14px;background:#fff;border:1px solid var(--border);
  color:var(--brand);display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:600;margin-bottom:18px;position:relative;z-index:1;box-shadow:var(--sh1);
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:15px;color:var(--text-2);margin:0}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;margin:0 auto}
.accordion-item-clean{background:transparent;border:0;border-bottom:1px solid var(--border)}
.accordion-item-clean:first-child{border-top:1px solid var(--border)}
.accordion-item-clean .accordion-button{
  background:transparent;box-shadow:none;color:var(--text);font-size:16px;font-weight:600;
  padding:20px 8px 20px 16px;border-radius:0;line-height:1.6;
}
.accordion-item-clean .accordion-button::after{
  background-image:none;content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;
  color:var(--text-3);width:16px;height:16px;display:flex;align-items:center;justify-content:center;
  transition:transform 200ms var(--ease);
}
.accordion-item-clean .accordion-button:not(.collapsed){color:var(--brand-dark);background:transparent}
.accordion-item-clean .accordion-button:not(.collapsed)::after{transform:rotate(180deg);color:var(--brand)}
.accordion-item-clean .accordion-button:focus{box-shadow:none}
.accordion-item-clean .accordion-button::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:2px;background:transparent;transition:background 180ms var(--ease);
}
.accordion-item-clean .accordion-button:not(.collapsed)::before{background:var(--brand)}
.accordion-button{position:relative}
.accordion-body{padding:0 8px 22px 16px;font-size:15px;color:var(--text-2)}

/* ---------- 订阅 / 表单 ---------- */
.subscribe-panel{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:34px;box-shadow:var(--sh1);display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;
}
.subscribe-panel h3{font-size:22px}
.subscribe-panel p{color:var(--text-2);font-size:15px;margin-bottom:0}
.field-row{display:flex;gap:12px;flex-wrap:wrap}
.field-row input{
  flex:1 1 200px;height:48px;border:1px solid var(--border);border-radius:var(--r-btn);padding:0 14px;background:#fff;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.field-row input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-light);outline:none}
.field-hint{font-size:13px;color:var(--text-3);margin-top:10px}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--dark);color:#fff;padding:64px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{color:#fff;margin:0 0 10px;font-size:30px}
.cta-inner p{color:rgba(255,255,255,.76);margin:0;font-size:15.5px;max-width:640px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.78);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:600;margin-bottom:16px}
.footer-brand:hover{color:#fff;text-decoration:none}
.footer-brand .brand-mark{background:#fff;color:var(--dark)}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);margin:0}
.footer-title{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px}
.footer-links,.footer-contact{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:10px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:12px}
.footer-contact i{margin-top:5px;color:rgba(255,255,255,.5)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;display:flex;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.56);
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  h1{font-size:38px}
  h2{font-size:29px}
  .feature-row{gap:40px}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;}
}
@media (max-width:991px){
  :root{--section-gap:64px}
  h1{font-size:34px}
  h2{font-size:26px}
  .brandbar .search{display:none}
  .brandbar .search.open{display:block;position:absolute;left:24px;right:24px;top:64px;max-width:none;z-index:1040}
  .brand-actions .text-link{display:none}
  .search-toggle{display:inline-flex}
  .hamburger{display:inline-flex}
  .brandbar-inner{gap:12px}
  .feature-row{grid-template-columns:1fr;gap:26px;margin-bottom:56px}
  .feature-row.reverse .feature-media{order:0}
  .feature-row.reverse .feature-body{order:1}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .metric-item:nth-child(2n){border-right:0}
  .metric-item:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.1)}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px}
  .steps::before{display:none}
  .subscribe-panel{grid-template-columns:1fr;gap:22px;padding:28px}
  .cta-inner h2{font-size:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  :root{--section-gap:56px}
  h1{font-size:29px}
  h2{font-size:23px}
  h3{font-size:19px}
  body{font-size:15.5px}
  .page-hero{padding:60px 0 52px}
  .page-hero .hero-sub{font-size:15.5px}
  .page-hero .hero-actions .btn-app{flex:1 1 100%}
  .card-grid{grid-template-columns:1fr}
  table.compare{font-size:14px;display:block;overflow-x:auto;white-space:nowrap}
  .table-wrap{overflow-x:auto}
  .metric-num{font-size:25px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn-app{flex:1 1 auto}
}
@media (max-width:575px){
  .container{padding-left:18px;padding-right:18px}
  h1{font-size:26px}
  h2{font-size:21px}
  .brandbar-inner{min-height:62px}
  .brand{font-size:17px}
  .brand-mark{width:30px;height:30px;font-size:15px}
  .brand-actions{gap:10px}
  .btn-app{padding:10px 16px;font-size:14.5px;min-height:44px}
  .metric-grid{grid-template-columns:1fr}
  .metric-item{border-right:0;border-bottom:1px solid rgba(255,255,255,.1);padding:20px 18px}
  .metric-item:last-child{border-bottom:0}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .subscribe-panel{padding:22px}
  .field-row .btn-app{width:100%}
}