/* roulang page: index */
:root{
  --bg-0:#05070E;
  --bg-1:#0A1020;
  --bg-2:#101830;
  --primary:#2E6BFF;
  --primary-hover:#4A82FF;
  --primary-pressed:#1E52D6;
  --accent-cyan:#2BE3C4;
  --accent-magenta:#FF3D8B;
  --text-1:#EAF0FF;
  --text-2:#A9B6D4;
  --text-3:#6C7A9C;
  --line:rgba(120,170,255,.16);
  --line-hover:rgba(46,107,255,.55);
  --glass:rgba(255,255,255,.05);
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:14px;
  --shadow-card:0 18px 48px rgba(2,6,20,.55);
  --shadow-hover:0 28px 64px rgba(2,6,20,.7);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace;
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
body.has-float-bar{padding-bottom:96px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0;position:relative}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-title{font-size:clamp(24px,2.6vw,34px);line-height:1.3;font-weight:600;letter-spacing:.01em;margin:0}
.section-desc{color:var(--text-2);font-size:15px;max-width:560px;margin:10px 0 0}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-num);font-size:12px;letter-spacing:.14em;color:var(--accent-cyan);text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:2px;height:14px;background:var(--accent-cyan);display:inline-block}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;height:var(--nav-h);
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background .28s ease,box-shadow .28s ease;
}
.site-header.is-scrolled{background:rgba(5,7,14,.92);box-shadow:0 12px 34px rgba(2,6,20,.6)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:100%;gap:20px}
.nav-left,.nav-right{display:flex;align-items:center;gap:18px}
.nav-left{flex:7 1 0%;min-width:0}
.nav-right{flex:5 1 0%;justify-content:flex-end;min-width:0}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{position:relative;width:26px;height:26px;border-radius:9px;background:linear-gradient(140deg,rgba(46,107,255,.9),rgba(43,227,196,.75));box-shadow:0 0 18px rgba(46,107,255,.5)}
.logo-mark::after{content:"";position:absolute;inset:7px;border-radius:4px;background:var(--bg-0);opacity:.85}
.logo-dot{width:6px;height:6px;border-radius:50%;background:var(--accent-cyan);box-shadow:0 0 10px var(--accent-cyan)}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.logo-sub{font-size:11px;color:var(--text-3);letter-spacing:.16em;border-left:1px solid var(--line);padding-left:8px;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{position:relative;padding:10px 14px;font-size:15px;color:var(--text-2);border-radius:10px;transition:color .22s ease,background .22s ease;white-space:nowrap}
.nav-link:hover{color:var(--text-1);background:rgba(46,107,255,.08)}
.nav-link.active{color:var(--primary-hover)}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--primary);box-shadow:0 0 12px rgba(46,107,255,.8)}
.nav-link.active::before{content:"";position:absolute;left:50%;top:4px;width:4px;height:4px;margin-left:-2px;border-radius:50%;background:var(--accent-cyan)}
.nav-search{display:flex;align-items:center;gap:8px;position:relative}
.search-toggle{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;background:var(--glass);border:1px solid var(--line);cursor:pointer;transition:border-color .22s ease,background .22s ease,transform .22s ease}
.search-toggle:hover{border-color:var(--line-hover);transform:translateY(-2px)}
.search-field{width:0;opacity:0;overflow:hidden;transition:width .28s ease,opacity .28s ease;border-radius:999px;background:var(--glass);border:1px solid var(--line)}
.search-field input{width:220px;height:40px;background:transparent;border:0;padding:0 16px;font-size:14px;outline:none}
.search-field input::placeholder{color:var(--text-3)}
.nav-search.is-open .search-field{width:220px;opacity:1}
.nav-search.is-open .search-field:focus-within{border-color:var(--primary);box-shadow:0 0 0 1px rgba(46,107,255,.5),0 0 24px rgba(46,107,255,.32)}
.nav-toggle{display:none;width:40px;height:40px;border-radius:12px;background:var(--glass);border:1px solid var(--line);cursor:pointer;align-items:center;justify-content:center}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-btn);border:1px solid transparent;cursor:pointer;font-size:15px;font-weight:600;text-align:center;transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;white-space:nowrap}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-md{height:44px;padding:0 24px}
.btn-lg{height:52px;padding:0 30px;font-size:16px}
.btn-pill{border-radius:999px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 0 0 1px rgba(46,107,255,.5),0 10px 32px rgba(46,107,255,.42)}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(74,130,255,.6),0 14px 36px rgba(46,107,255,.55)}
.btn-primary:active{background:var(--primary-pressed);transform:translateY(0);box-shadow:0 0 0 1px rgba(46,107,255,.45),0 6px 18px rgba(46,107,255,.32)}
.btn-ghost{background:var(--glass);border-color:var(--line);color:var(--text-1);backdrop-filter:blur(14px)}
.btn-ghost:hover{border-color:var(--line-hover);transform:translateY(-2px);color:#fff}
.btn-ghost:active{transform:translateY(0)}
.btn-magenta{background:var(--accent-magenta);color:#16030C;box-shadow:0 0 0 1px rgba(255,61,139,.45),0 10px 30px rgba(255,61,139,.36)}
.btn-magenta:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,61,139,.6),0 14px 34px rgba(255,61,139,.48)}
.btn-text{text-decoration:underline;text-underline-offset:4px;color:var(--text-2);padding:0}
.btn-text:hover{color:var(--primary-hover)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:calc(var(--nav-h) + 24px) 0 88px;background:
  radial-gradient(900px 520px at 12% 6%,rgba(46,107,255,.20),transparent 62%),
  radial-gradient(700px 420px at 88% 18%,rgba(43,227,196,.12),transparent 66%),
  var(--bg-0);}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:center}
.hero-copy{position:relative;z-index:2}
.hero h1{font-size:clamp(30px,4.2vw,52px);line-height:1.22;font-weight:700;letter-spacing:.01em;margin:0 0 16px;max-width:16em}
.hero h1 em{font-style:normal;color:var(--accent-cyan)}
.hero-sub{font-size:17px;color:var(--text-2);margin:0 0 28px;max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-points{display:flex;flex-wrap:wrap;gap:26px;padding-top:22px;border-top:1px solid var(--line)}
.hero-point{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-2)}
.hero-point b{font-family:var(--font-num);font-size:15px;color:var(--accent-cyan);font-weight:600}
.hero-visual{position:relative;min-height:420px;border-radius:24px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);clip-path:polygon(9% 0,100% 0,100% 100%,0 100%)}
.hero-visual img{width:100%;height:100%;min-height:420px;object-fit:cover}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,7,14,.82) 0%,rgba(5,7,14,.35) 45%,rgba(5,7,14,.16) 100%)}
.float-card{position:absolute;z-index:3;background:rgba(12,18,36,.62);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:16px;padding:16px 18px;box-shadow:0 18px 44px rgba(2,6,20,.6)}
.float-card .fc-num{font-family:var(--font-num);font-size:24px;font-weight:600;color:var(--accent-cyan)}
.float-card .fc-label{font-size:12px;color:var(--text-3);letter-spacing:.06em}
.float-a{left:-16px;bottom:64px;width:172px}
.float-b{right:18px;top:52px;width:158px;border-color:rgba(255,61,139,.32)}
.float-b .fc-num{color:var(--accent-magenta)}

/* ---------- 卖点非对称网格 ---------- */
.point-grid{display:grid;grid-template-columns:7fr 5fr;grid-template-rows:auto auto;gap:24px}
.card{background:rgba(255,255,255,.045);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;position:relative;transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;overflow:hidden}
.card:hover{transform:translateY(-4px);border-color:var(--line-hover);box-shadow:var(--shadow-hover)}
.card-mark::before{content:"";position:absolute;left:24px;top:24px;width:2px;height:22px;background:var(--accent-cyan);border-radius:2px}
.point-main{grid-row:span 2;padding:32px;display:flex;flex-direction:column;justify-content:space-between}
.point-index{font-family:var(--font-num);font-size:13px;color:var(--text-3);letter-spacing:.16em;margin-bottom:18px;padding-left:16px}
.point-icon{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;background:rgba(43,227,196,.08);border:1px solid rgba(43,227,196,.28);margin-bottom:18px}
.card h3{font-size:20px;line-height:1.4;font-weight:600;margin:0 0 10px}
.card p{font-size:14px;line-height:1.75;color:var(--text-2);margin:0}
.point-main .point-figure{margin-top:26px;border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line)}
.point-main .point-figure img{width:100%;height:200px;object-fit:cover}

/* ---------- 场景演示 ---------- */
.scene-wrap{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:start}
.scene-tabs{display:flex;flex-direction:column;gap:12px}
.scene-tab{display:flex;align-items:flex-start;gap:14px;text-align:left;background:transparent;border:1px solid var(--line);border-radius:16px;padding:18px;cursor:pointer;transition:border-color .24s ease,background .24s ease,transform .24s ease}
.scene-tab:hover{border-color:var(--line-hover);transform:translateY(-2px)}
.scene-tab.is-active{background:rgba(46,107,255,.10);border-color:rgba(46,107,255,.5);box-shadow:0 0 0 1px rgba(46,107,255,.28),0 12px 30px rgba(46,107,255,.18)}
.scene-tab .st-num{font-family:var(--font-num);font-size:13px;color:var(--accent-cyan);padding-top:4px}
.scene-tab .st-title{font-size:16px;font-weight:600;margin:0 0 4px}
.scene-tab .st-desc{font-size:13px;color:var(--text-3);margin:0}
.scene-panel{display:none}
.scene-panel.is-active{display:block;animation:fadeUp .34s ease}
.scene-figure{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);margin-bottom:22px}
.scene-figure img{width:100%;height:260px;object-fit:cover}
.step-list{list-style:none;margin:0;padding:0}
.step-list li{display:flex;gap:16px;padding:14px 0;border-bottom:1px dashed var(--line)}
.step-list li:last-child{border-bottom:0}
.step-list .sn{font-family:var(--font-num);font-size:13px;color:var(--accent-cyan);min-width:34px;padding-top:3px}
.step-list .sd{font-size:15px;color:var(--text-2)}
.step-list .sd b{color:var(--text-1);display:block;font-weight:600;font-size:16px;margin-bottom:2px}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start}
.news-lead{display:block;padding:0;overflow:hidden}
.news-lead .nl-figure{position:relative;overflow:hidden}
.news-lead .nl-figure img{width:100%;height:250px;object-fit:cover;transition:transform .4s ease}
.news-lead:hover .nl-figure img{transform:scale(1.04)}
.news-lead .nl-body{padding:22px 24px 26px}
.news-lead h3{font-size:21px;line-height:1.45;font-weight:600;margin:12px 0 10px}
.news-lead p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-rows{display:flex;flex-direction:column}
.row-card{display:flex;gap:14px;padding:18px 4px;border-bottom:1px solid var(--line);transition:background .22s ease,padding-left .22s ease,border-color .22s ease}
.row-card:first-child{border-top:1px solid var(--line)}
.row-card:hover{background:rgba(46,107,255,.06);padding-left:12px;border-color:var(--line-hover)}
.row-num{font-family:var(--font-num);font-size:12px;color:var(--text-3);padding-top:5px;min-width:26px}
.row-title{font-size:16px;font-weight:600;margin:0 0 6px;line-height:1.5;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.row-excerpt{font-size:13px;color:var(--text-2);margin:0 0 8px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.row-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-3);font-family:var(--font-num)}
.meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-3);font-family:var(--font-num);flex-wrap:wrap}
.meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);display:inline-block}
.badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:3px 11px;font-size:12px;line-height:1.7;background:var(--glass);border:1px solid var(--line);color:var(--text-2);backdrop-filter:blur(10px);white-space:nowrap}
.badge-cyan{border-color:rgba(43,227,196,.42);color:var(--accent-cyan);background:rgba(43,227,196,.08)}
.badge-magenta{border-color:rgba(255,61,139,.42);color:var(--accent-magenta);background:rgba(255,61,139,.09)}
.empty-card{min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;grid-column:1 / -1}
.empty-card svg{opacity:.6}
.empty-card p{font-size:14px;color:var(--text-3);margin:0}

/* ---------- 社会认同 ---------- */
.proof-grid{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:start}
.partner-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:18px}
.partner{display:flex;align-items:center;justify-content:center;height:58px;border:1px solid var(--line);border-radius:12px;color:var(--text-3);font-size:13px;filter:grayscale(1);transition:color .24s ease,border-color .24s ease,filter .24s ease}
.partner:hover{filter:grayscale(0);color:var(--text-1);border-color:var(--line-hover)}
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.stat{padding:20px;border-radius:16px;border:1px solid var(--line);background:rgba(255,255,255,.035)}
.stat .sv{font-family:var(--font-num);font-size:26px;font-weight:600;color:var(--accent-cyan);line-height:1.2}
.stat .su{font-size:12px;color:var(--accent-cyan);font-family:var(--font-num);margin-left:3px}
.stat .sl{font-size:13px;color:var(--text-3);margin-top:6px}
.quote-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:26px;align-items:start}
.quote{background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:16px;padding:20px;transition:transform .26s ease,border-color .26s ease}
.quote:hover{transform:translateY(-4px);border-color:var(--line-hover)}
.quote p{font-size:14px;color:var(--text-2);line-height:1.8;margin:0 0 14px}
.quote .qname{font-size:13px;color:var(--text-3)}
.quote--tall{padding:26px 22px 30px}
.quote--tall p{-webkit-line-clamp:unset}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:5fr 7fr;gap:36px;align-items:start}
.faq-list{background:rgba(255,255,255,.04);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:var(--radius-card);padding:6px 22px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;font-size:16px;font-weight:600;transition:color .22s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary-hover)}
.faq-icon{flex:0 0 auto;width:22px;height:22px;position:relative;border-radius:50%;border:1px solid var(--line);transition:transform .26s ease,border-color .26s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--text-2);transform:translate(-50%,-50%)}
.faq-icon::before{width:9px;height:1.5px}
.faq-icon::after{width:1.5px;height:9px;transition:opacity .26s ease}
.faq-item[open] .faq-icon{transform:rotate(45deg);border-color:rgba(46,107,255,.6)}
.faq-item[open] .faq-icon::after{opacity:0}
.faq-answer{padding:0 0 18px;font-size:14px;color:var(--text-2);line-height:1.8;max-width:60ch}

/* ---------- CTA 表单 ---------- */
.cta-card{background:rgba(255,255,255,.05);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--line);border-radius:24px;padding:40px;display:grid;grid-template-columns:5fr 7fr;gap:36px;box-shadow:var(--shadow-card)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;color:var(--text-2)}
.field input,.field textarea{height:48px;border-radius:12px;background:rgba(5,7,14,.55);border:1px solid var(--line);padding:0 16px;font-size:15px;transition:border-color .22s ease,box-shadow .22s ease}
.field textarea{height:110px;padding:14px 16px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 1px rgba(46,107,255,.5),0 0 22px rgba(46,107,255,.28)}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.form-note{font-size:12px;color:var(--text-3);margin-top:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:5fr 2.4fr 2.4fr 2.4fr;gap:36px}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.8;margin:14px 0 0;max-width:34em}
.footer-col h4{font-size:14px;font-weight:600;margin:0 0 14px;color:var(--text-1)}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-3);transition:color .22s ease}
.footer-col a:hover{color:var(--primary-hover);text-decoration:underline;text-underline-offset:4px}
.footer-col span{font-size:14px;color:var(--text-3)}
.footer-bottom{margin-top:48px;border-top:1px solid var(--line);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer-bottom p{font-size:13px;color:var(--text-3);margin:0}
.to-top{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2)}
.to-top:hover{color:var(--primary-hover)}

/* ---------- 底部转化条 ---------- */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:70;max-width:420px;background:rgba(12,18,36,.82);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--line);border-radius:18px;padding:18px 20px;display:flex;align-items:center;gap:16px;box-shadow:0 24px 60px rgba(2,6,20,.7);transform:translateY(140%);opacity:0;transition:transform .34s ease,opacity .34s ease}
.float-cta.is-show{transform:translateY(0);opacity:1}
.float-cta p{margin:0;font-size:14px;color:var(--text-2);flex:1}
.float-close{width:28px;height:28px;border-radius:50%;border:1px solid var(--line);background:transparent;cursor:pointer;color:var(--text-3);flex:0 0 auto;line-height:1}
.float-close:hover{color:var(--text-1);border-color:var(--line-hover)}

/* ---------- 移动菜单 ---------- */
.mobile-menu{position:fixed;inset:0;z-index:80;background:rgba(5,7,14,.94);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);display:none;flex-direction:column;padding:24px;overflow-y:auto}
.mobile-menu.is-open{display:flex}
.mobile-menu .mm-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.mobile-menu .mm-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--glass);cursor:pointer}
.mm-search{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:999px;background:var(--glass);padding:0 8px 0 16px;height:48px;margin-bottom:22px}
.mm-search input{flex:1;background:transparent;border:0;outline:none;font-size:15px;height:46px}
.mm-links{display:flex;flex-direction:column;gap:6px}
.mm-links a{padding:16px 4px;border-bottom:1px solid var(--line);font-size:17px;font-weight:600}
.mm-links a.is-active{color:var(--primary-hover)}
.mm-foot{margin-top:auto;padding-top:28px;font-size:13px;color:var(--text-3);display:flex;flex-direction:column;gap:8px}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .34s ease,transform .34s ease}
.reveal.in{opacity:1;transform:none}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero-grid,.point-grid,.scene-wrap,.news-grid,.proof-grid,.faq-wrap,.cta-card{grid-template-columns:1fr}
  .point-main{grid-row:auto}
  .hero-visual{clip-path:none;min-height:320px}
  .hero-visual img{min-height:320px}
  .float-a{left:14px;bottom:16px}
  .float-b{right:14px;top:16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .nav-left,.nav-right{flex:initial}
  .nav-right .btn-primary{display:none}
}
@media (max-width:768px){
  :root{--nav-h:56px}
  .section{padding:60px 0}
  .container{padding:0 16px}
  .hero{padding:calc(var(--nav-h) + 24px) 0 56px}
  .hero-points{gap:16px}
  .partner-grid{grid-template-columns:repeat(2,1fr)}
  .quote-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .cta-card{padding:24px}
  .faq-list{padding:4px 16px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .search-field,.nav-search{display:none}
  .float-cta{left:0;right:0;bottom:0;max-width:none;border-radius:18px 18px 0 0;padding:14px 16px calc(14px + env(safe-area-inset-bottom));transform:translateY(140%)}
  body.has-float-bar{padding-bottom:96px}
}
@media (max-width:520px){
  .logo-sub{display:none}
  .hero h1{font-size:28px}
  .stat-grid{grid-template-columns:1fr}
  .partner-grid{grid-template-columns:1fr 1fr}
  .news-lead .nl-figure img{height:190px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bg-0:#05070E; --bg-1:#0A1020; --bg-2:#101830;
  --primary:#2E6BFF; --primary-hover:#4A82FF; --primary-pressed:#1E52D6;
  --accent-cyan:#2BE3C4; --accent-magenta:#FF3D8B;
  --text-1:#EAF0FF; --text-2:#A9B6D4; --text-3:#6C7A9C;
  --line:rgba(120,170,255,.16); --line-hover:rgba(46,107,255,.55);
  --glass:rgba(255,255,255,.05);
  --radius-card:18px; --radius-img:14px; --radius-btn:14px; --radius-pill:999px;
  --shadow-card:0 18px 48px rgba(2,6,20,.55);
  --shadow-card-hover:0 28px 64px rgba(2,6,20,.7);
  --glow-primary:0 0 0 1px rgba(46,107,255,.5), 0 10px 32px rgba(46,107,255,.42);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--text-1);font-family:var(--font-sans);
  font-size:16px;line-height:1.85;letter-spacing:.01em;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease,opacity .22s ease}
a:hover{color:var(--primary-hover)}
button,input,textarea{font:inherit;color:inherit}
ul,ol{padding:0;margin:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ===== header / nav ===== */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(6,10,20,.72);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);transition:background .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{background:rgba(4,7,15,.92);box-shadow:0 12px 36px rgba(2,6,20,.6)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0}
.nav-right{display:flex;align-items:center;gap:14px}
.logo{display:inline-flex;align-items:center;gap:9px;white-space:nowrap}
.logo-mark{width:12px;height:12px;border-radius:4px;background:linear-gradient(135deg,var(--primary),var(--accent-cyan));box-shadow:0 0 14px rgba(43,227,196,.55)}
.logo-text{font-size:19px;font-weight:700;letter-spacing:.02em;color:var(--text-1)}
.logo-dot{width:6px;height:6px;border-radius:50%;background:var(--accent-cyan);box-shadow:0 0 10px var(--accent-cyan)}
.logo-sub{font-size:12px;color:var(--text-3);letter-spacing:.14em}
.main-nav{display:flex;align-items:center;gap:26px}
.nav-link{position:relative;font-size:15px;color:var(--text-2);padding:6px 2px}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;transform:scaleX(0);transform-origin:left;background:var(--primary);box-shadow:0 0 12px rgba(46,107,255,.8);transition:transform .22s ease}
.nav-link:hover{color:var(--text-1)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--primary-hover)}
.nav-link.active::after{transform:scaleX(1)}
.nav-search{display:flex;align-items:center;gap:8px}
.search-field{width:0;overflow:hidden;transition:width .28s ease}
.nav-search.open .search-field{width:220px}
.search-field input{
  width:100%;height:40px;padding:0 14px;border-radius:var(--radius-pill);
  background:var(--glass);border:1px solid var(--line);color:var(--text-1);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.search-field input::placeholder{color:var(--text-3)}
.search-field input:focus{outline:none;border-color:var(--line-hover);box-shadow:0 0 0 3px rgba(46,107,255,.18)}
.search-toggle{
  width:40px;height:40px;display:grid;place-items:center;border-radius:50%;
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);cursor:pointer;
}
.search-toggle:hover{color:var(--text-1);border-color:var(--line-hover)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;letter-spacing:.02em;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
}
.btn-sm{height:36px;padding:0 16px;font-size:13.5px;border-radius:12px}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),#3E7BFF);color:#fff;
  box-shadow:var(--glow-primary);
}
.btn-primary:hover{background:linear-gradient(135deg,var(--primary-hover),#5A8EFF);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(46,107,255,.6),0 16px 40px rgba(46,107,255,.55)}
.btn-primary:active{transform:translateY(0);background:var(--primary-pressed);box-shadow:0 0 0 1px rgba(46,107,255,.4),0 6px 18px rgba(46,107,255,.3)}
.btn-ghost{background:var(--glass);border-color:var(--line);color:var(--text-1);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}
.btn-ghost:hover{border-color:var(--line-hover);transform:translateY(-2px);color:var(--text-1)}
.btn-magenta{background:linear-gradient(135deg,var(--accent-magenta),#FF6AA8);color:#fff;box-shadow:0 10px 30px rgba(255,61,139,.4)}
.btn-magenta:hover{transform:translateY(-2px);color:#fff}
.nav-toggle{display:none;width:40px;height:40px;place-items:center;border-radius:12px;background:var(--glass);border:1px solid var(--line);color:var(--text-2);cursor:pointer}

/* ===== mobile menu ===== */
.mobile-menu{
  position:fixed;inset:0;z-index:80;display:none;flex-direction:column;gap:26px;padding:76px 24px 32px;
  background:rgba(4,7,15,.94);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
}
.mobile-menu.open{display:flex}
.mobile-menu .mm-close{position:absolute;top:18px;right:20px;width:40px;height:40px;display:grid;place-items:center;border-radius:50%;background:var(--glass);border:1px solid var(--line);color:var(--text-1);cursor:pointer}
.mobile-menu nav{display:flex;flex-direction:column;gap:6px}
.mobile-menu nav a{font-size:20px;font-weight:600;padding:14px 0;border-bottom:1px solid var(--line)}
.mobile-menu nav a.active{color:var(--primary-hover)}
.mm-info{margin-top:auto;font-size:13px;color:var(--text-3);line-height:1.9}
body.menu-open{overflow:hidden}

/* ===== page hero band ===== */
.page-band{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:var(--bg-1)}
.page-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(90deg,rgba(5,7,14,.96) 0%,rgba(5,7,14,.78) 48%,rgba(5,7,14,.42) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.9;
}
.page-band::after{
  content:"";position:absolute;top:-20%;right:-8%;width:46%;height:180%;
  background:linear-gradient(180deg,rgba(46,107,255,.28),rgba(43,227,196,.06));
  transform:skewX(-7deg);filter:blur(6px);pointer-events:none;
}
.page-band .band-inner{position:relative;z-index:2;padding:28px 0 40px}
.crumb-bar{
  display:inline-flex;align-items:center;flex-wrap:wrap;gap:8px;max-width:100%;
  padding:8px 16px;border-radius:var(--radius-pill);border:1px solid var(--line);
  background:var(--glass);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  font-size:13px;color:var(--text-3);
}
.crumb-bar a{color:var(--text-2)}
.crumb-bar a:hover{color:var(--primary-hover)}
.crumb-sep{color:var(--text-3);opacity:.7}
.crumb-current{display:inline-block;max-width:52vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:bottom;color:var(--text-2)}

/* ===== article head ===== */
.post-head{padding:40px 0 8px;max-width:860px}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:var(--radius-pill);
  font-family:var(--font-num);font-size:12.5px;letter-spacing:.04em;
  border:1px solid var(--line);background:var(--glass);color:var(--text-2);
}
.badge-cyan{border-color:rgba(43,227,196,.45);color:var(--accent-cyan)}
.badge-magenta{border-color:rgba(255,61,139,.45);color:var(--accent-magenta)}
.post-title{
  font-size:clamp(28px,4vw,46px);line-height:1.24;font-weight:700;letter-spacing:.01em;
  margin:18px 0 16px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-family:var(--font-num);font-size:13px;color:var(--text-3)}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);opacity:.7}

/* ===== layout ===== */
.main-wrap{padding:48px 0 88px}
.layout-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:44px;align-items:start}
.reading-col{min-width:0}
.article-body{
  max-width:780px;font-size:17px;line-height:1.9;color:var(--text-1);
}
.article-body > * + *{margin-top:1.2em}
.article-body p{color:var(--text-1);opacity:.94}
.article-body h2{
  position:relative;font-size:clamp(21px,2.2vw,26px);line-height:1.35;font-weight:600;
  margin-top:44px;padding-left:16px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.22em;width:3px;height:1.05em;background:var(--accent-cyan);border-radius:2px;box-shadow:0 0 12px rgba(43,227,196,.5)}
.article-body h3{font-size:20px;font-weight:600;margin-top:32px;color:var(--text-1)}
.article-body h4{font-size:17px;font-weight:600;color:var(--text-2)}
.article-body a{color:var(--primary-hover);text-decoration:underline;text-underline-offset:4px}
.article-body strong{color:#fff;font-weight:600}
.article-body ul,.article-body ol{padding-left:4px;color:var(--text-2)}
.article-body ul li,.article-body ol li{position:relative;padding-left:20px;margin:8px 0}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.78em;width:6px;height:6px;border-radius:2px;background:var(--accent-cyan);opacity:.85}
.article-body ol{counter-reset:li}
.article-body ol li::before{
  counter-increment:li;content:counter(li,decimal-leading-zero);
  position:absolute;left:0;top:0;font-family:var(--font-num);font-size:12.5px;color:var(--accent-cyan);line-height:1.9;
}
.article-body ol li{padding-left:30px}
.article-body blockquote{
  margin:28px 0;padding:18px 22px;border-left:3px solid var(--primary);
  background:var(--glass);border-radius:0 var(--radius-img) var(--radius-img) 0;
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);color:var(--text-2);
}
.article-body blockquote p{color:var(--text-2);opacity:1}
.article-body img{border-radius:var(--radius-img);margin:28px auto;box-shadow:var(--shadow-card)}
.article-body figure{margin:28px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{
  width:100%;display:block;overflow-x:auto;border-collapse:collapse;font-size:15px;
  border-top:1px solid var(--line);border-radius:var(--radius-img);background:var(--bg-2);
}
.article-body thead th{background:rgba(46,107,255,.12);color:var(--text-1);font-weight:600}
.article-body th,.article-body td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.025)}
.article-body pre{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-img);
  padding:18px 20px;overflow-x:auto;font-family:var(--font-num);font-size:14px;line-height:1.7;color:var(--text-2);
}
.article-body code{font-family:var(--font-num);font-size:14px;background:var(--bg-2);border:1px solid var(--line);border-radius:6px;padding:2px 6px;color:var(--accent-cyan)}
.article-body pre code{background:none;border:0;padding:0;color:inherit}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* ===== aside ===== */
.aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.aside-card{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--glass);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  padding:22px;box-shadow:var(--shadow-card);
}
.aside-card h3{font-size:15px;font-weight:600;display:flex;align-items:center;gap:8px;margin-bottom:14px}
.aside-card h3::before{content:"";width:2px;height:14px;background:var(--accent-cyan);border-radius:2px}
.aside-list li + li{margin-top:10px}
.aside-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:14px;color:var(--text-2);padding:9px 12px;border-radius:12px;border:1px solid transparent;transition:all .22s ease}
.aside-list a:hover{background:rgba(46,107,255,.1);border-color:var(--line-hover);color:var(--text-1);transform:translateX(2px)}
.aside-list .num{font-family:var(--font-num);font-size:12px;color:var(--accent-cyan)}
.aside-note{font-size:13.5px;line-height:1.8;color:var(--text-2)}
.aside-note + .aside-note{margin-top:10px}
.aside-thumb{border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);margin-bottom:14px}
.aside-thumb img{width:100%;height:132px;object-fit:cover}

/* ===== related ===== */
.section{padding:76px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:600;letter-spacing:.01em}
.section-head p{font-size:14px;color:var(--text-2);margin-top:8px;max-width:620px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-num);font-size:12.5px;color:var(--accent-cyan);letter-spacing:.08em;margin-bottom:12px}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent-cyan);border-radius:2px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rel-card{
  display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius-card);
  background:linear-gradient(160deg,rgba(16,24,48,.9),rgba(10,16,32,.75));overflow:hidden;
  box-shadow:var(--shadow-card);transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:var(--line-hover)}
.rel-card .thumb{aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line)}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.rel-card:hover .thumb img{transform:scale(1.04)}
.rel-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:17px;font-weight:600;line-height:1.45}
.rel-body p{font-size:14px;line-height:1.75;color:var(--text-2)}
.rel-meta{display:flex;align-items:center;gap:8px;font-family:var(--font-num);font-size:12.5px;color:var(--text-3);margin-top:auto}
.text-link{font-size:14px;color:var(--primary-hover);text-decoration:underline;text-underline-offset:4px}

/* ===== pager ===== */
.pager{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:44px;padding-top:26px;border-top:1px solid var(--line);max-width:780px}
.pager-links{display:flex;gap:12px;flex-wrap:wrap}

/* ===== faq ===== */
.faq-layout{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:44px;align-items:start}
.faq-list{border:1px solid var(--line);border-radius:var(--radius-card);background:var(--glass);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;cursor:pointer;list-style:none;font-size:16px;font-weight:600;transition:background .22s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:rgba(46,107,255,.08)}
.faq-item summary .plus{flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .28s ease}
.faq-item summary .plus::before,.faq-item summary .plus::after{content:"";position:absolute;background:var(--accent-cyan);border-radius:2px}
.faq-item summary .plus::before{left:0;right:0;top:10px;height:2px}
.faq-item summary .plus::after{top:0;bottom:0;left:10px;width:2px}
.faq-item[open] summary .plus{transform:rotate(45deg)}
.faq-item .answer{padding:0 24px 22px;font-size:14.5px;line-height:1.85;color:var(--text-2)}

/* ===== cta ===== */
.cta-card{
  position:relative;overflow:hidden;border:1px solid var(--line);border-radius:24px;
  background:linear-gradient(140deg,rgba(16,24,48,.94),rgba(8,12,26,.86));
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  padding:40px;box-shadow:var(--shadow-card);
}
.cta-card::after{
  content:"";position:absolute;top:-30%;right:-6%;width:38%;height:170%;
  background:linear-gradient(180deg,rgba(46,107,255,.32),rgba(43,227,196,.05));
  transform:skewX(-7deg);pointer-events:none;
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:start}
.cta-grid h2{font-size:clamp(22px,2.4vw,30px);font-weight:600;line-height:1.35;margin-bottom:14px}
.cta-grid .lead{font-size:15px;color:var(--text-2);line-height:1.85}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input,.field textarea{
  width:100%;height:48px;padding:0 16px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text-1);
}
.field textarea{height:104px;padding:14px 16px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--line-hover);box-shadow:0 0 0 3px rgba(46,107,255,.18)}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:12px}
.form-ok{display:none;margin-top:14px;font-size:13.5px;color:var(--accent-cyan)}
.form-ok.show{display:block}

/* ===== empty state ===== */
.empty-state{
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--glass);
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  text-align:center;padding:40px 24px;
}
.empty-state .icon{width:48px;height:48px;display:grid;place-items:center;border-radius:14px;border:1px solid var(--line);color:var(--accent-cyan)}
.empty-state p{font-size:14px;color:var(--text-2)}

/* ===== footer ===== */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding:64px 0 40px}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.85;margin-top:16px;max-width:420px}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--text-1)}
.footer-col li + li{margin-top:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--primary-hover);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:22px 0 30px;border-top:1px solid var(--line)}
.footer-bottom p{font-size:13px;color:var(--text-3)}
.to-top{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);padding:8px 14px;border-radius:var(--radius-pill);border:1px solid var(--line);background:var(--glass)}
.to-top:hover{color:var(--primary-hover);border-color:var(--line-hover)}

/* ===== dock ===== */
.dock{
  position:fixed;right:24px;bottom:24px;z-index:70;display:flex;align-items:center;gap:14px;
  padding:14px 18px;border-radius:20px;border:1px solid var(--line);
  background:rgba(10,16,32,.86);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);opacity:0;transform:translateY(14px);pointer-events:none;transition:opacity .3s ease,transform .3s ease;
}
.dock.show{opacity:1;transform:translateY(0);pointer-events:auto}
.dock p{font-size:13.5px;color:var(--text-2);max-width:200px;line-height:1.6}
.dock .dock-close{width:28px;height:28px;display:grid;place-items:center;border-radius:50%;border:1px solid var(--line);background:transparent;color:var(--text-3);cursor:pointer}
.dock .dock-close:hover{color:var(--text-1);border-color:var(--line-hover)}

/* ===== reveal ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .34s ease,transform .34s ease}
.reveal.in{opacity:1;transform:none}

@media (max-width:1024px){
  .main-nav{display:none}
  .nav-toggle{display:grid}
  .nav-search{display:none}
  .layout-grid{grid-template-columns:minmax(0,1fr);gap:36px}
  .aside{position:static;flex-direction:row;flex-wrap:wrap}
  .aside-card{flex:1 1 300px}
  .faq-layout{grid-template-columns:minmax(0,1fr);gap:30px}
  .cta-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .nav-wrap{height:56px}
  .nav-right .btn{display:none}
  .logo-text{font-size:17px}
  .logo-sub{display:none}
  .page-band .band-inner{padding:20px 0 30px}
  .post-head{padding:28px 0 4px}
  .crumb-current{max-width:42vw}
  .main-wrap{padding:34px 0 64px}
  .section{padding:56px 0}
  .article-body{font-size:16px;line-height:1.9}
  .article-body h2{margin-top:36px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .cta-card{padding:26px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:48px 0 32px}
  .dock{left:0;right:0;bottom:0;border-radius:0;border-left:0;border-right:0;border-bottom:0;padding:12px 18px calc(12px + env(safe-area-inset-bottom));justify-content:space-between}
  .dock p{max-width:none}
  body.dock-visible{padding-bottom:88px}
}
@media (max-width:520px){
  .related-grid{gap:18px}
  .post-meta{font-size:12.5px}
  .crumb-bar{font-size:12.5px;padding:7px 12px}
  .aside-card{padding:18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --bg-0:#05070E;
  --bg-1:#0A1020;
  --bg-2:#101830;
  --primary:#2E6BFF;
  --primary-hover:#4A82FF;
  --primary-pressed:#1E52D6;
  --accent-cyan:#2BE3C4;
  --accent-magenta:#FF3D8B;
  --text-1:#EAF0FF;
  --text-2:#A9B6D4;
  --text-3:#6C7A9C;
  --line:rgba(120,170,255,.16);
  --line-hover:rgba(46,107,255,.55);
  --glass:rgba(255,255,255,.05);
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:14px;
  --shadow-card:0 18px 48px rgba(2,6,20,.55);
  --shadow-card-hover:0 28px 64px rgba(2,6,20,.7);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter","DIN Alternate",ui-monospace,monospace;
  --nav-h:68px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease,background-color .22s ease;}
button,input,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:600;letter-spacing:.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-alt{background:var(--bg-1);}
.section-head{max-width:780px;margin-bottom:44px;}
.section-head h2{font-size:clamp(24px,2.6vw,34px);}
.section-head p{margin-top:14px;color:var(--text-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-num);font-size:13px;letter-spacing:.14em;
  color:var(--accent-cyan);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:2px;height:14px;background:var(--accent-cyan);display:inline-block;}
.mono{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background-color .28s ease,box-shadow .28s ease;
}
.site-header.scrolled{
  background:rgba(5,8,17,.92);
  box-shadow:0 12px 36px rgba(2,6,20,.6);
}
.nav-wrap{
  height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.nav-left{display:flex;align-items:center;gap:36px;min-width:0;}
.nav-right{display:flex;align-items:center;gap:14px;}
.logo{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;}
.logo-mark{
  width:12px;height:12px;border-radius:50%;
  border:2px solid var(--accent-cyan);
  box-shadow:0 0 12px rgba(43,227,196,.6);
  position:relative;flex:none;
}
.logo-mark::after{
  content:"";position:absolute;inset:2.5px;border-radius:50%;background:var(--accent-cyan);
}
.logo-text{font-size:18px;font-weight:600;letter-spacing:.01em;}
.logo-dot{width:4px;height:4px;border-radius:50%;background:var(--primary);flex:none;}
.logo-sub{
  font-size:11px;color:var(--text-2);
  border:1px solid var(--line);border-radius:999px;
  padding:1px 8px;line-height:1.6;
}
.main-nav{display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;
  font-size:15px;color:var(--text-2);
  padding:6px 2px;
}
.nav-link:hover{color:var(--text-1);}
.nav-link.active{color:var(--primary-hover);}
.nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--primary);border-radius:2px;
  box-shadow:0 0 12px rgba(46,107,255,.8);
}
.nav-link.active::before{
  content:"";position:absolute;right:-8px;top:4px;width:4px;height:4px;
  border-radius:50%;background:var(--accent-cyan);
  box-shadow:0 0 8px rgba(43,227,196,.9);
}
.nav-search{display:flex;align-items:center;gap:8px;}
.search-field{width:220px;transition:width .26s ease;}
.search-field input{
  width:100%;height:38px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  padding:0 16px;font-size:14px;color:var(--text-1);
  outline:none;transition:border-color .22s ease,box-shadow .22s ease;
}
.search-field input::placeholder{color:var(--text-3);}
.search-field input:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(46,107,255,.22);
}
.search-toggle{
  width:40px;height:40px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--glass);color:var(--text-2);
  transition:color .22s ease,border-color .22s ease,transform .22s ease;
}
.search-toggle:hover{color:var(--text-1);border-color:var(--line-hover);transform:translateY(-1px);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--glass);color:var(--text-1);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  padding:0 22px;height:44px;
  transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,border-color .22s ease,color .22s ease;
  white-space:nowrap;
}
.btn-sm{height:36px;font-size:14px;padding:0 16px;border-radius:999px;}
.btn-lg{height:52px;font-size:16px;padding:0 28px;}
.btn-primary{
  background:linear-gradient(180deg,var(--primary-hover),var(--primary));
  color:#F4F8FF;
  box-shadow:0 0 0 1px rgba(46,107,255,.5),0 10px 32px rgba(46,107,255,.42);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(46,107,255,.6),0 16px 40px rgba(46,107,255,.55);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(46,107,255,.45),0 6px 18px rgba(46,107,255,.35);}
.btn-ghost{
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text-1);
}
.btn-ghost:hover{border-color:var(--line-hover);color:#fff;transform:translateY(-2px);}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary-hover);font-size:14px;font-weight:600;
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.btn-link:hover{border-color:var(--primary-hover);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;
}

/* ---------- 页头 ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.page-hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.5;
}
.page-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(5,7,14,.96) 0%,rgba(5,7,14,.78) 52%,rgba(5,7,14,.42) 100%),
             linear-gradient(180deg,rgba(5,7,14,.55) 0%,rgba(5,7,14,.86) 62%,var(--bg-0) 100%);
}
.page-hero-inner{
  position:relative;z-index:2;
  padding:calc(var(--nav-h) + 40px) 24px 78px;
  max-width:1200px;
}
.breadcrumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb a:hover{color:var(--primary-hover);}
.breadcrumb .sep{color:var(--text-3);opacity:.6;}
.breadcrumb .current{color:var(--text-2);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-num);font-size:12px;letter-spacing:.06em;
  padding:4px 12px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);
}
.badge-cyan{color:var(--accent-cyan);border-color:rgba(43,227,196,.4);background:rgba(43,227,196,.08);}
.badge-magenta{color:var(--accent-magenta);border-color:rgba(255,61,139,.42);background:rgba(255,61,139,.09);}
.page-hero h1{
  font-size:clamp(28px,3.6vw,46px);
  font-weight:700;line-height:1.24;
  max-width:900px;margin:18px 0 0;
}
.hero-lead{
  margin-top:18px;max-width:720px;
  color:var(--text-2);font-size:16px;line-height:1.85;
}
.hero-meta{
  margin-top:26px;display:flex;flex-wrap:wrap;gap:14px 26px;
  font-family:var(--font-num);font-size:13px;color:var(--text-3);
}
.hero-meta span{display:inline-flex;align-items:center;gap:8px;}
.hero-meta span::before{content:"";width:2px;height:12px;background:var(--accent-cyan);display:inline-block;}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  margin-top:-42px;position:relative;z-index:5;
}
.stat-card{
  background:linear-gradient(180deg,rgba(16,24,48,.9),rgba(10,16,32,.86));
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 22px 20px;box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);
  position:relative;overflow:hidden;
}
.stat-card::before{
  content:"";position:absolute;left:22px;top:0;width:2px;height:22px;background:var(--accent-cyan);
}
.stat-num{
  font-family:var(--font-num);font-size:30px;font-weight:600;
  color:var(--text-1);letter-spacing:.02em;line-height:1.2;
}
.stat-num em{font-style:normal;font-size:14px;color:var(--accent-cyan);margin-left:4px;}
.stat-label{margin-top:6px;font-size:13px;color:var(--text-3);}

/* ---------- 卡片 ---------- */
.card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow-card);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease,background-color .28s ease;
  position:relative;
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-card-hover);
  border-color:var(--line-hover);
}
.card h3{font-size:20px;margin-bottom:10px;}
.card p{color:var(--text-2);font-size:14px;line-height:1.75;}
.card-num{
  font-family:var(--font-num);font-size:13px;color:var(--accent-cyan);
  letter-spacing:.12em;margin-bottom:12px;display:block;
}
.card-thumb{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--radius-img);margin-bottom:18px;
  border:1px solid var(--line);
}

/* ---------- 时间线 ---------- */
.timeline{position:relative;margin-top:12px;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--accent-cyan),rgba(46,107,255,.5),rgba(46,107,255,.05));
}
.tl-item{position:relative;padding:0 0 34px 0;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-34px;top:8px;width:12px;height:12px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--accent-cyan);
  box-shadow:0 0 12px rgba(43,227,196,.55);
}
.tl-num{
  font-family:var(--font-num);font-size:13px;color:var(--accent-cyan);
  letter-spacing:.14em;display:block;margin-bottom:6px;
}
.tl-item h3{font-size:20px;margin-bottom:8px;}
.tl-item p{color:var(--text-2);font-size:15px;max-width:760px;}

/* ---------- 场景非对称网格 ---------- */
.scene-grid{
  display:grid;grid-template-columns:1.35fr 1fr;
  grid-auto-rows:1fr;gap:24px;
}
.scene-main{grid-row:span 2;display:flex;flex-direction:column;}
.scene-main .card-thumb{aspect-ratio:16/10;}
.scene-main p{margin-top:12px;font-size:15px;}
.scene-side{display:flex;flex-direction:column;gap:12px;}
.scene-side .card{margin:0;}
.scene-side h3{font-size:18px;}

/* ---------- 对照区 ---------- */
.compare{
  display:grid;grid-template-columns:1fr 1fr;gap:0;
  border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;background:var(--glass);
}
.compare-col{padding:30px 28px;}
.compare-col + .compare-col{border-left:1px solid var(--line);}
.compare-col h3{font-size:19px;margin-bottom:16px;}
.compare-col ul li{
  position:relative;padding-left:18px;margin-bottom:10px;
  font-size:14px;color:var(--text-2);line-height:1.75;
}
.compare-col ul li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--accent-cyan);
}
.compare-col.hot ul li::before{background:var(--primary);}
.compare-note{
  margin-top:16px;font-family:var(--font-num);font-size:12px;color:var(--text-3);
}

/* ---------- 图文双列 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.split-media img{
  border-radius:var(--radius-img);border:1px solid var(--line);
  box-shadow:var(--shadow-card);width:100%;aspect-ratio:16/10;object-fit:cover;
}
.split-body h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:16px;}
.split-body p{color:var(--text-2);margin-bottom:14px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;border-bottom:1px dashed var(--line);
  font-size:15px;color:var(--text-2);
}
.check-list li:last-child{border-bottom:0;}
.check-list li svg{flex:none;margin-top:5px;color:var(--accent-cyan);}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start;}
.faq-item{
  border:1px solid var(--line);border-radius:14px;
  background:var(--glass);
  margin-bottom:12px;overflow:hidden;
  transition:border-color .24s ease,background-color .24s ease;
}
.faq-item:hover{border-color:var(--line-hover);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .plus{
  flex:none;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--line);position:relative;
  transition:transform .26s ease,border-color .26s ease;
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";position:absolute;background:var(--text-2);border-radius:2px;
  transition:opacity .26s ease,background-color .26s ease;
}
.faq-item summary .plus::before{left:6px;right:6px;top:10px;height:1.6px;}
.faq-item summary .plus::after{top:6px;bottom:6px;left:10px;width:1.6px;}
.faq-item[open] summary .plus{transform:rotate(135deg);border-color:var(--primary);}
.faq-item[open] summary .plus::before,
.faq-item[open] summary .plus::after{background:var(--primary-hover);}
.faq-item .faq-body{
  padding:0 20px 20px;color:var(--text-2);font-size:14px;line-height:1.85;
}

/* ---------- 跳转模块 ---------- */
.jump-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.jump-card{
  display:block;padding:24px;border-radius:var(--radius-card);
  border:1px solid var(--line);background:var(--glass);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.jump-card:hover{transform:translateY(-4px);border-color:var(--line-hover);box-shadow:var(--shadow-card-hover);}
.jump-card h3{font-size:18px;margin:10px 0 8px;}
.jump-card p{font-size:14px;color:var(--text-2);}
.jump-card .go{
  margin-top:16px;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--primary-hover);font-weight:600;
}

/* ---------- CTA ---------- */
.cta-card{
  background:linear-gradient(135deg,rgba(16,24,48,.92),rgba(10,16,32,.9));
  border:1px solid var(--line);border-radius:22px;
  padding:44px;backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);
  display:grid;grid-template-columns:1fr 1fr;gap:44px;
}
.cta-card h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:14px;}
.cta-card p{color:var(--text-2);font-size:15px;}
.cta-points{margin-top:20px;}
.cta-points li{
  display:flex;gap:10px;align-items:center;font-size:14px;color:var(--text-2);margin-bottom:10px;
}
.cta-points li span{
  font-family:var(--font-num);color:var(--accent-cyan);
  border:1px solid rgba(43,227,196,.35);border-radius:6px;
  padding:0 7px;font-size:12px;
}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;height:48px;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  padding:0 16px;outline:none;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.field textarea{height:96px;padding:12px 16px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{
  border-color:var(--primary);box-shadow:0 0 0 3px rgba(46,107,255,.22);
}
.form-note{margin-top:12px;font-size:12px;color:var(--text-3);line-height:1.7;}
.form-msg{margin-top:10px;font-size:13px;color:var(--accent-cyan);min-height:20px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-3);max-width:340px;line-height:1.8;}
.footer-col h4{font-size:14px;color:var(--text-2);margin-bottom:16px;letter-spacing:.04em;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--text-3);}
.footer-col a:hover{color:var(--primary-hover);text-decoration:underline;text-underline-offset:4px;}
.footer-col span{font-size:14px;color:var(--text-3);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--text-3);font-family:var(--font-num);}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-2);
  border:1px solid var(--line);border-radius:999px;padding:7px 14px;
  transition:border-color .22s ease,color .22s ease,transform .22s ease;
}
.to-top:hover{color:var(--text-1);border-color:var(--line-hover);transform:translateY(-2px);}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .34s ease,transform .34s ease;}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .section{padding:72px 0;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .scene-grid{grid-template-columns:1fr;}
  .scene-main{grid-row:auto;}
  .split{grid-template-columns:1fr;gap:28px;}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
  .cta-card{grid-template-columns:1fr;padding:34px;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .jump-grid{grid-template-columns:1fr 1fr;}
  .search-field{width:160px;}
}
@media (max-width:900px){
  :root{--nav-h:56px;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:absolute;top:var(--nav-h);left:0;right:0;
    display:none;flex-direction:column;align-items:flex-start;gap:6px;
    padding:16px 24px 22px;
    background:rgba(6,10,20,.96);
    backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line);
  }
  .main-nav.open{display:flex;}
  .nav-link{padding:10px 0;width:100%;font-size:16px;}
  .nav-link.active::before{display:none;}
  .nav-left{gap:16px;}
  .nav-search{display:none;}
  .logo-sub{display:none;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  body{font-size:15px;}
  .stat-strip{grid-template-columns:1fr;margin-top:0;gap:14px;}
  .page-hero-inner{padding:calc(var(--nav-h) + 28px) 16px 56px;}
  .compare{grid-template-columns:1fr;}
  .compare-col + .compare-col{border-left:0;border-top:1px solid var(--line);}
  .jump-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-card{padding:24px;}
  .timeline{padding-left:26px;}
  .tl-item::before{left:-26px;}
  .btn{width:100%;}
  .nav-right .btn-sm{width:auto;}
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --bg-0:#05070E;
  --bg-1:#0A1020;
  --bg-2:#101830;
  --primary:#2E6BFF;
  --primary-hover:#4A82FF;
  --primary-pressed:#1E52D6;
  --cyan:#2BE3C4;
  --magenta:#FF3D8B;
  --text-1:#EAF0FF;
  --text-2:#A9B6D4;
  --text-3:#6C7A9C;
  --line:rgba(120,170,255,.16);
  --line-hover:rgba(46,107,255,.55);
  --glass:rgba(255,255,255,.05);
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:14px;
  --shadow-card:0 18px 48px rgba(2,6,20,.55);
  --shadow-card-hover:0 28px 64px rgba(2,6,20,.7);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace;
  --container:1200px;
  --header-h:68px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease,background-color .22s ease,opacity .22s ease;}
a:hover{color:var(--primary-hover);}
button,input,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.22;font-weight:700;letter-spacing:.01em;}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;font-weight:600;letter-spacing:.01em;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{color:var(--text-2);}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background-color .24s ease,box-shadow .24s ease;
}
.site-header.is-scrolled{
  background:rgba(5,8,16,.92);
  box-shadow:0 12px 32px rgba(2,6,20,.6);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;height:var(--header-h);
}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0;}
.nav-right{display:flex;align-items:center;gap:14px;}

.logo{display:inline-flex;align-items:center;gap:9px;flex:0 0 auto;}
.logo-mark{
  width:14px;height:14px;border-radius:50%;
  background:radial-gradient(circle at 32% 30%,#9fd8ff,var(--primary) 62%,#1a3fa0);
  box-shadow:0 0 14px rgba(46,107,255,.75);
}
.logo-text{font-size:18px;font-weight:700;color:var(--text-1);letter-spacing:.02em;}
.logo-dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px rgba(43,227,196,.85);}
.logo-sub{
  font-size:11px;color:var(--text-3);letter-spacing:.16em;
  border:1px solid var(--line);border-radius:999px;padding:2px 8px;
  font-family:var(--font-num);
}

.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);
  transition:color .22s ease,background-color .22s ease;
}
.nav-link:hover{color:var(--text-1);background:rgba(46,107,255,.09);}
.nav-link.active{color:var(--primary-hover);}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;
  background:var(--primary);border-radius:2px;
  box-shadow:0 0 10px rgba(46,107,255,.85);
}
.nav-link.active::before{
  content:"";position:absolute;top:4px;right:8px;width:5px;height:5px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 8px rgba(43,227,196,.9);
}

.nav-search{display:flex;align-items:center;gap:6px;position:relative;}
.search-field{
  width:0;overflow:hidden;opacity:0;
  transition:width .28s ease,opacity .28s ease;
}
.nav-search.is-open .search-field{width:220px;opacity:1;}
.search-field input{
  width:100%;height:40px;padding:0 14px;
  background:var(--glass);border:1px solid var(--line);border-radius:999px;
  color:var(--text-1);font-size:14px;outline:none;
  backdrop-filter:blur(14px);
}
.search-field input::placeholder{color:var(--text-3);}
.search-field input:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 1px rgba(46,107,255,.55),0 8px 24px rgba(46,107,255,.35);
}
.search-toggle{
  width:40px;height:40px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--glass);color:var(--text-2);
  backdrop-filter:blur(14px);
  transition:border-color .22s ease,color .22s ease,transform .22s ease;
}
.search-toggle:hover{border-color:var(--line-hover);color:var(--text-1);transform:translateY(-1px);}

.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--glass);color:var(--text-1);
}

/* 移动端全屏菜单 */
.mobile-menu{
  position:fixed;inset:0;z-index:80;
  background:rgba(5,8,16,.94);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  padding:84px 24px 40px;
  display:none;flex-direction:column;gap:10px;
  overflow-y:auto;
}
.mobile-menu.is-open{display:flex;}
.mobile-menu .menu-close{
  position:absolute;top:18px;right:20px;
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:var(--glass);color:var(--text-1);
  display:inline-flex;align-items:center;justify-content:center;
}
.mobile-menu .mm-link{
  display:block;padding:16px 18px;border-radius:14px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  font-size:17px;color:var(--text-1);
}
.mobile-menu .mm-link.active{border-color:var(--line-hover);color:var(--primary-hover);}
.mobile-menu .mm-search input{
  width:100%;height:48px;padding:0 16px;border-radius:14px;
  background:var(--glass);border:1px solid var(--line);color:var(--text-1);outline:none;
}
.mobile-menu .mm-foot{margin-top:auto;padding-top:24px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .2s ease,box-shadow .24s ease,background-color .24s ease,border-color .24s ease,color .24s ease;
}
.btn-sm{height:36px;padding:0 16px;font-size:14px;border-radius:12px;}
.btn-lg{height:52px;padding:0 30px;font-size:16px;}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),#1E52D6);
  color:#F3F7FF;
  box-shadow:0 0 0 1px rgba(46,107,255,.5),0 10px 32px rgba(46,107,255,.42);
}
.btn-primary:hover{
  background:linear-gradient(135deg,var(--primary-hover),var(--primary));
  color:#FFFFFF;transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(74,130,255,.6),0 16px 40px rgba(46,107,255,.55);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(46,107,255,.45),0 6px 18px rgba(46,107,255,.32);}
.btn-ghost{
  background:var(--glass);border:1px solid var(--line);color:var(--text-1);
  backdrop-filter:blur(14px);
}
.btn-ghost:hover{border-color:var(--line-hover);color:var(--text-1);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-magenta{
  background:linear-gradient(135deg,var(--magenta),#D6246C);
  color:#FFFFFF;
  box-shadow:0 0 0 1px rgba(255,61,139,.45),0 10px 30px rgba(255,61,139,.38);
}
.btn-magenta:hover{transform:translateY(-2px);color:#fff;box-shadow:0 0 0 1px rgba(255,61,139,.6),0 16px 38px rgba(255,61,139,.5);}
.link-more{
  font-size:14px;color:var(--primary-hover);text-decoration:underline;
  text-underline-offset:4px;
}
.link-more:hover{color:var(--cyan);}

/* ============ 页头 Banner ============ */
.page-banner{
  position:relative;
  min-height:320px;
  display:flex;align-items:flex-end;
  background-image:linear-gradient(100deg,rgba(5,7,14,.94) 0%,rgba(5,7,14,.72) 46%,rgba(5,7,14,.42) 72%,rgba(5,7,14,.92) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-banner::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:120px;
  background:linear-gradient(to bottom,rgba(5,7,14,0),var(--bg-0));
  pointer-events:none;
}
.page-banner::before{
  content:"";position:absolute;top:0;bottom:0;right:34%;
  width:2px;background:linear-gradient(to bottom,rgba(43,227,196,0),rgba(43,227,196,.55),rgba(43,227,196,0));
  transform:skewX(-7deg);pointer-events:none;
}
.banner-inner{position:relative;z-index:2;padding:calc(var(--header-h) + 40px) 0 52px;width:100%;}
.crumb{
  display:inline-flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
  background:var(--glass);border:1px solid var(--line);border-radius:999px;
  padding:6px 14px;backdrop-filter:blur(14px);
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary-hover);}
.crumb .sep{color:var(--text-3);opacity:.7;}
.crumb .cur{color:var(--text-1);}
.banner-inner h1{margin:20px 0 14px;max-width:820px;}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--text-2);
  border:1px solid var(--line);border-radius:999px;padding:5px 12px;
  background:rgba(255,255,255,.03);
}
.tag .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px rgba(43,227,196,.8);}
.lead{max-width:780px;font-size:16px;color:var(--text-2);}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section.tight{padding:72px 0;}
.section.alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-num);font-size:13px;letter-spacing:.14em;
  color:var(--cyan);text-transform:uppercase;margin-bottom:14px;
}
.section-head .kicker::before{
  content:"";width:2px;height:16px;background:var(--cyan);border-radius:2px;
  box-shadow:0 0 10px rgba(43,227,196,.7);
}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:15px;}

.card{
  position:relative;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:var(--line-hover);}
.card::before{
  content:"";position:absolute;left:24px;top:0;width:2px;height:18px;
  background:var(--cyan);border-radius:0 0 2px 2px;opacity:.85;
}
.badge{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;
  padding:3px 10px;border-radius:999px;
  border:1px solid rgba(43,227,196,.45);
  color:var(--cyan);background:rgba(43,227,196,.08);
}
.badge.magenta{border-color:rgba(255,61,139,.45);color:var(--magenta);background:rgba(255,61,139,.08);}
.badge.plain{border-color:var(--line);color:var(--text-3);background:rgba(255,255,255,.03);}
.meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--text-3);font-family:var(--font-num);
}
.meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);opacity:.6;}

/* 图文双列 */
.news-layout{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start;}
.news-feature{overflow:hidden;padding:0;}
.news-feature img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.news-feature .body{padding:24px;}
.news-feature .body h3{margin:14px 0 10px;}
.news-feature .body p{font-size:14px;line-height:1.75;margin-bottom:16px;}
.news-side{display:flex;flex-direction:column;gap:16px;}
.row-card{
  display:block;
  border:1px solid var(--line);border-radius:14px;
  background:rgba(255,255,255,.03);
  padding:16px 18px;
  transition:background-color .22s ease,border-color .22s ease,transform .22s ease;
}
.row-card:hover{background:rgba(46,107,255,.06);border-color:var(--line-hover);transform:translateX(4px);}
.row-card h4{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
.row-card p{font-size:13px;line-height:1.7;color:var(--text-3);margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.qa-card{
  border:1px solid var(--line);border-radius:14px;padding:18px;
  background:var(--bg-2);
}
.qa-card .q{font-size:14px;color:var(--text-1);font-weight:600;margin-bottom:8px;}
.qa-card .a{font-size:13px;color:var(--text-2);line-height:1.75;}

/* 对比区 */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--glass);}
.compare-col{padding:28px 26px;}
.compare-col + .compare-col{border-left:1px solid var(--line);}
.compare-col h3{margin-bottom:8px;}
.compare-col .sub{font-size:13px;color:var(--text-3);font-family:var(--font-num);margin-bottom:18px;}
.compare-col ul{display:flex;flex-direction:column;gap:12px;}
.compare-col li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7;}
.compare-col li .mk{flex:0 0 auto;margin-top:8px;width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px rgba(43,227,196,.7);}
.compare-col.now li .mk{background:var(--primary);box-shadow:0 0 8px rgba(46,107,255,.7);}

/* 横向滚动卡 */
.scroll-strip{display:flex;gap:20px;overflow-x:auto;padding:6px 4px 22px;scroll-snap-type:x mandatory;}
.scroll-strip::-webkit-scrollbar{height:6px;}
.scroll-strip::-webkit-scrollbar-track{background:rgba(255,255,255,.04);border-radius:999px;}
.scroll-strip::-webkit-scrollbar-thumb{background:rgba(46,107,255,.5);border-radius:999px;}
.scroll-card{
  flex:0 0 300px;scroll-snap-align:start;
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--glass);padding:22px;
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.scroll-card:hover{transform:translateY(-4px);border-color:var(--line-hover);box-shadow:var(--shadow-card-hover);}
.scroll-card .idx{font-family:var(--font-num);font-size:26px;font-weight:700;color:rgba(43,227,196,.9);line-height:1;margin-bottom:14px;}
.scroll-card h3{font-size:17px;margin-bottom:8px;}
.scroll-card p{font-size:13.5px;line-height:1.75;}
.scroll-card .foot{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);font-family:var(--font-num);}

/* 时间线 */
.timeline{position:relative;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(to bottom,rgba(43,227,196,.6),rgba(46,107,255,.35),rgba(43,227,196,0));
  border-radius:2px;
}
.tl-item{position:relative;padding-bottom:34px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-32px;top:8px;width:12px;height:12px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--cyan);box-shadow:0 0 12px rgba(43,227,196,.55);
}
.tl-item .tl-no{font-family:var(--font-num);font-size:13px;color:var(--cyan);letter-spacing:.12em;margin-bottom:6px;}
.tl-item h3{font-size:18px;margin-bottom:8px;}
.tl-item p{font-size:14px;line-height:1.8;max-width:720px;}

/* 数据条 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stat{
  border:1px solid var(--line);border-radius:14px;padding:20px;
  background:rgba(255,255,255,.03);
}
.stat .v{font-family:var(--font-num);font-size:28px;font-weight:700;color:var(--text-1);line-height:1.1;}
.stat .v span{font-size:14px;color:var(--text-3);margin-left:4px;}
.stat .l{font-size:13px;color:var(--text-3);margin-top:8px;}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start;}
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  border:1px solid var(--line);border-radius:14px;
  background:rgba(255,255,255,.03);
  backdrop-filter:blur(14px);
  transition:border-color .24s ease,background-color .24s ease;
}
.faq-item[open]{border-color:var(--line-hover);background:rgba(46,107,255,.06);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--text-1);
}
.faq-q::-webkit-details-marker{display:none;}
.faq-q .plus{
  position:relative;flex:0 0 18px;width:18px;height:18px;
  transition:transform .26s ease;
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;background:var(--cyan);border-radius:2px;
}
.faq-q .plus::before{left:0;top:8px;width:18px;height:2px;}
.faq-q .plus::after{left:8px;top:0;width:2px;height:18px;}
.faq-item[open] .faq-q .plus{transform:rotate(45deg);}
.faq-a{padding:0 22px 20px;font-size:14.5px;color:var(--text-2);line-height:1.85;max-width:720px;}

/* 内链模块 */
.links-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.link-tile{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;background:var(--glass);
  transition:border-color .24s ease,transform .24s ease,background-color .24s ease;
}
.link-tile:hover{border-color:var(--line-hover);transform:translateY(-3px);background:rgba(46,107,255,.06);}
.link-tile h3{font-size:17px;margin-bottom:6px;}
.link-tile p{font-size:13.5px;line-height:1.7;}
.link-tile .arrow{
  flex:0 0 40px;width:40px;height:40px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--text-2);
}

/* CTA 表单 */
.cta-card{
  border:1px solid var(--line);border-radius:22px;
  padding:40px;background:linear-gradient(140deg,rgba(46,107,255,.12),rgba(43,227,196,.05) 55%,rgba(255,255,255,.03));
  backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);
  display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
}
.form-grid{display:grid;gap:16px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:13px;color:var(--text-2);}
.field input,.field textarea{
  width:100%;height:48px;padding:0 16px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:14px;
  color:var(--text-1);outline:none;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.field textarea{height:96px;padding:14px 16px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field textarea:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 1px rgba(46,107,255,.5),0 10px 26px rgba(46,107,255,.28);
}
.form-note{font-size:12.5px;color:var(--text-3);line-height:1.7;}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 28px;margin-top:8px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;}
.footer-brand p{font-size:13.5px;line-height:1.8;color:var(--text-3);margin-top:16px;max-width:360px;}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:16px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a,.footer-col span{font-size:13.5px;color:var(--text-3);line-height:1.6;display:block;}
.footer-col a:hover{color:var(--primary-hover);text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--text-3);}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-2);
  border:1px solid var(--line);border-radius:999px;padding:8px 16px;
}
.to-top:hover{border-color:var(--line-hover);color:var(--text-1);}

/* 滚动显现 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .34s ease,transform .34s ease;}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-search .search-field{display:none;}
  .news-layout{grid-template-columns:1fr;}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
  .cta-card{grid-template-columns:1fr;padding:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .stats{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:768px){
  :root{--header-h:56px;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-search{display:none;}
  .nav-right .btn{display:none;}
  .section{padding:64px 0;}
  .section.tight{padding:56px 0;}
  .page-banner{min-height:280px;}
  .banner-inner{padding:calc(var(--header-h) + 32px) 0 40px;}
  .compare{grid-template-columns:1fr;}
  .compare-col + .compare-col{border-left:0;border-top:1px solid var(--line);}
  .links-grid{grid-template-columns:1fr;}
  .card{padding:20px;}
  .card::before{left:20px;}
  .scroll-card{flex:0 0 260px;}
}
@media (max-width:640px){
  .container{padding:0 18px;}
  body{font-size:15px;}
  .banner-tags{gap:8px;}
  .stats{grid-template-columns:1fr 1fr;gap:14px;}
  .stat{padding:16px;}
  .stat .v{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-card{padding:24px;border-radius:18px;}
  .news-feature .body{padding:20px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .reveal{opacity:1;transform:none;}
}