/* =========================================================
   小火箭加速器 - 全站共享样式
   结构复刻 getshadowrocket.org，素材为原创
   ========================================================= */
:root{
  --primary:#7c3aed;
  --primary-2:#d946ef;
  --grad:linear-gradient(135deg,#7c3aed 0%,#d946ef 100%);
  --grad-fire:linear-gradient(135deg,#f97316,#ef4444);
  --dark:#0b1120;
  --dark-2:#111b33;
  --dark-3:#16223f;
  --text:#0f172a;
  --muted:#5b6b85;
  --muted-2:#94a3b8;
  --border:#e2e8f0;
  --bg:#ffffff;
  --bg-alt:#f4f7fd;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 10px 30px rgba(15,23,42,.08);
  --shadow-lg:0 24px 60px rgba(15,23,42,.16);
  --ok:#10b981;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",system-ui,-apple-system,sans-serif;
  color:var(--text);
  background:var(--bg);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{list-style:none}
button{font-family:inherit;cursor:pointer}
svg{vertical-align:middle}

.container{width:min(1200px,92%);margin:0 auto}
.hidden{display:none!important}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:0;transition:.25s;white-space:nowrap;line-height:1.2;
}
.btn svg{width:18px;height:18px;flex:none}
.btn-lg{padding:16px 34px;font-size:17px}
.btn-sm{padding:8px 18px;font-size:14px}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(124,58,237,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(124,58,237,.45)}
.btn-fire{background:var(--grad-fire);color:#fff;box-shadow:0 10px 24px rgba(239,68,68,.3)}
.btn-fire:hover{transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--primary);border:2px solid rgba(124,58,237,.35)}
.btn-ghost:hover{background:rgba(124,58,237,.06);border-color:var(--primary)}
.btn-white{background:#fff;color:var(--primary)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(0,0,0,.2)}
.btn-outline-white{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.4)}
.btn-outline-white:hover{border-color:#fff;background:rgba(255,255,255,.08)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(11,17,32,.85);backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.header-inner{display:flex;align-items:center;gap:28px;height:70px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-icon{
  width:38px;height:38px;border-radius:10px;background:var(--grad);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(124,58,237,.4);
}
.brand-icon svg{width:22px;height:22px;fill:#fff}
.brand-icon img{width:38px;height:38px;border-radius:10px;object-fit:cover;display:block;flex:none;background:#fff}
.brand-name{color:#fff;font-size:19px;font-weight:800;letter-spacing:.5px}
.main-nav{display:flex;gap:4px;margin:0 auto}
.main-nav a{
  color:#cbd5e1;padding:8px 16px;border-radius:8px;font-size:15px;transition:.2s;
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.06)}
.main-nav a.active{color:#fff;font-weight:600;background:rgba(124,58,237,.25)}
.nav-toggle{
  display:none;background:none;border:0;color:#fff;padding:6px;
}
.nav-toggle svg{width:26px;height:26px;stroke:#fff}

/* ---------- Hero（首页大图） ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:
    radial-gradient(900px 420px at 85% -10%,rgba(217,70,239,.35),transparent 60%),
    radial-gradient(800px 500px at -10% 10%,rgba(124,58,237,.4),transparent 60%),
    linear-gradient(180deg,#0b1120 0%,#0e1730 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(700px 500px at 30% 30%,#000 40%,transparent 100%);
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding:84px 0 72px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:999px;
  background:rgba(217,70,239,.14);border:1px solid rgba(217,70,239,.4);
  color:#ddd6fe;font-size:14px;margin-bottom:20px;
}
.hero h1{font-size:clamp(30px,4vw,46px);line-height:1.25;font-weight:800;letter-spacing:.5px;margin-bottom:18px}
.hero h1 .grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{color:#cbd5e1;font-size:17px;margin-bottom:26px;max-width:560px}
.hero-points{display:grid;grid-template-columns:1fr 1fr;gap:10px 22px;margin-bottom:30px}
.hero-points li{display:flex;gap:8px;align-items:flex-start;color:#e2e8f0;font-size:15px}
.hero-points .tick{flex:none;margin-top:4px;width:18px;height:18px;border-radius:50%;background:rgba(16,185,129,.2);color:#34d399}
.hero-points .tick svg{width:12px;height:12px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-platform-tip{display:flex;flex-wrap:wrap;gap:10px 20px;color:#94a3b8;font-size:13px}
.hero-platform-tip span{display:inline-flex;align-items:center;gap:6px}
.hero-platform-tip svg{width:16px;height:16px;fill:currentColor}

/* Hero 右侧产品图（纯CSS/SVG绘制） */
.hero-visual{position:relative}
.mock-window{
  position:relative;border-radius:18px;overflow:hidden;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(6px);box-shadow:var(--shadow-lg);
  transform:perspective(1000px) rotateY(-4deg);
}
.mock-top{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.08)}
.mock-top i{width:10px;height:10px;border-radius:50%;display:block}
.mock-top i:nth-child(1){background:#f87171}.mock-top i:nth-child(2){background:#fbbf24}.mock-top i:nth-child(3){background:#34d399}
.mock-top span{margin-left:auto;font-size:12px;color:#94a3b8}
.mock-body{padding:18px}
.status-card{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:14px 16px;border-radius:12px;background:rgba(16,185,129,.12);
  border:1px solid rgba(16,185,129,.35);margin-bottom:14px;
}
.status-dot{width:10px;height:10px;border-radius:50%;background:#34d399;animation:pulse 1.6s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(52,211,153,.6)}70%{box-shadow:0 0 0 9px rgba(52,211,153,0)}100%{box-shadow:0 0 0 0 rgba(52,211,153,0)}}
.status-card b{color:#a7f3d0;font-size:15px;font-weight:600}
.status-lat{font-size:13px;color:#6ee7b7}
.chart-card{background:rgba(11,17,32,.5);border-radius:12px;padding:14px;margin-bottom:14px}
.chart-card .c-title{display:flex;justify-content:space-between;font-size:12px;color:#94a3b8;margin-bottom:8px}
.node-row{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
  background:rgba(255,255,255,.05);margin-bottom:8px;
}
.node-row:last-child{margin-bottom:0}
.node-ico{width:30px;height:30px;border-radius:8px;background:rgba(124,58,237,.25);display:flex;align-items:center;justify-content:center;flex:none}
.node-ico svg{width:16px;height:16px;fill:#c4b5fd}
.node-info{flex:1;min-width:0}
.node-info b{display:block;color:#e2e8f0;font-size:13px;font-weight:600}
.node-info span{font-size:11px;color:#64748b}
.node-lat{color:#34d399;font-size:13px;font-weight:600}
.hero-float{position:absolute;border-radius:12px;padding:10px 14px;font-size:13px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);backdrop-filter:blur(8px);box-shadow:var(--shadow)}
.hero-float.f1{top:6%;left:-7%;animation:float 5s ease-in-out infinite}
.hero-float.f2{bottom:8%;right:-6%;animation:float 5s ease-in-out 1.4s infinite}
.hero-float .num{color:#c4b5fd;font-weight:800;font-size:18px}
.hero-float .lab{color:#cbd5e1;font-size:12px}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* ---------- 页面次级 Hero（下载/资讯页） ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;text-align:center;padding:64px 0 56px;
  background:radial-gradient(700px 320px at 50% -40%,rgba(217,70,239,.3),transparent 70%),
    linear-gradient(180deg,#0b1120,#101a34);
}
.page-hero::before{content:"";position:absolute;inset:0;opacity:.4;background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);background-size:26px 26px}
.page-hero .container{position:relative}
.page-hero h1{font-size:clamp(26px,3.4vw,38px);font-weight:800;margin-bottom:14px}
.page-hero .crumb{color:#c4b5fd;font-size:14px;margin-bottom:16px}
.page-hero .crumb a{color:#94a3b8}
.page-hero .crumb a:hover{color:#fff}
.page-hero p{color:#cbd5e1;max-width:640px;margin:0 auto 24px}

/* ---------- 区块通用 ---------- */
.section{padding:80px 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:760px;margin:0 auto 48px;text-align:center}
.section-eyebrow{
  display:inline-block;padding:4px 14px;border-radius:999px;font-size:13px;font-weight:600;
  color:var(--primary);background:rgba(124,58,237,.09);margin-bottom:14px;
}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.4;font-weight:800;margin-bottom:14px}
.section-head .lead{color:var(--muted);font-size:16px}

/* ---------- 平台下载按钮带 ---------- */
.platform-strip{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.platform-card{
  display:flex;flex-direction:column;align-items:center;gap:8px;
  padding:26px 14px;border-radius:var(--radius);text-align:center;
  background:#fff;border:1px solid var(--border);transition:.25s;
}
.platform-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:transparent}
.platform-card .plat-ico{
  width:54px;height:54px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(124,58,237,.12),rgba(217,70,239,.12));
}
.platform-card .plat-ico svg{width:28px;height:28px}
.platform-card b{font-size:16px}
.platform-card span{font-size:12.5px;color:var(--muted)}
.platform-card .ver{font-size:12px;color:var(--primary);font-weight:600}
.dark-band{background:linear-gradient(135deg,var(--dark-2),var(--dark-3));border:1px solid rgba(255,255,255,.08)}
.dark-band .section-head h2{color:#fff}
.dark-band .section-head .lead{color:#a5b4cd}
.dark-band .platform-card{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.12)}
.dark-band .platform-card:hover{border-color:rgba(217,70,239,.6);box-shadow:0 18px 40px rgba(0,0,0,.35)}
.dark-band .platform-card b{color:#fff}
.dark-band .platform-card span{color:#8fa0bd}

/* ---------- 功能卡片 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:30px 26px;transition:.25s;position:relative;overflow:hidden;
}
.feature-card::after{
  content:"";position:absolute;left:0;top:0;width:100%;height:4px;
  background:var(--grad);opacity:0;transition:.25s;
}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.feature-card:hover::after{opacity:1}
.feature-ico{
  width:52px;height:52px;border-radius:14px;margin-bottom:18px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(124,58,237,.14),rgba(217,70,239,.14));
}
.feature-ico svg{width:26px;height:26px;stroke:var(--primary);stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
.feature-card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.feature-card p{color:var(--muted);font-size:14.5px}

/* ---------- 技术区块 ---------- */
.tech-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.tech-block{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:34px}
.tech-block .tb-title{font-size:20px;font-weight:700;margin-bottom:22px;display:flex;align-items:center;gap:10px}
.tech-block .tb-title svg{width:22px;height:22px;stroke:var(--primary);stroke-width:1.8;fill:none}
.tech-block .tb-title img{width:22px;height:22px;object-fit:cover;border-radius:50%;flex:none}
.tech-item{display:flex;gap:18px;padding:16px 0;border-top:1px dashed var(--border)}
.tech-item:first-of-type{border-top:0}
.tech-num{font-size:13px;font-weight:800;color:var(--primary-2);flex:none;padding-top:4px}
.tech-item b{display:block;font-size:16px;margin-bottom:4px}
.tech-item p{color:var(--muted);font-size:14px}

/* ---------- 统计栏 ---------- */
.stats-band{background:var(--grad);padding:48px 0;position:relative;overflow:hidden}
.stats-band::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.12) 1px,transparent 1px);background-size:22px 22px;opacity:.5}
.stats-grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center;color:#fff}
.stat-item .num{font-size:clamp(30px,3.4vw,44px);font-weight:800;line-height:1.2}
.stat-item .lab{opacity:.85;font-size:14px;margin-top:4px}

/* ---------- 对比表 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.cmp-table{width:100%;border-collapse:collapse;min-width:760px;background:#fff}
.cmp-table th,.cmp-table td{padding:15px 18px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--border)}
.cmp-table thead th{background:linear-gradient(135deg,#0b1120,#16223f);color:#fff;font-weight:600;white-space:nowrap}
.cmp-table thead th.hl{background:var(--grad)}
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table tbody td:first-child{color:var(--muted);font-weight:600;white-space:nowrap}
.cmp-table .hl{background:rgba(124,58,237,.06);font-weight:600}
.cmp-note{margin-top:12px;font-size:13px;color:var(--muted)}

/* ---------- 评价 ---------- */
.rating-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:18px;margin-bottom:36px}
.rating-score{display:flex;align-items:baseline;gap:6px;color:var(--text);font-size:16px}
.rating-score b{font-size:38px;font-weight:800;color:var(--text)}
.stars{display:inline-flex;gap:2px}
.stars svg{width:20px;height:20px;fill:#f59e0b}
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.review-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px}
.review-head{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.avatar{
  width:48px;height:48px;border-radius:50%;flex:none;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;color:#fff;font-size:18px;
}
.avatar.a1{background:linear-gradient(135deg,#3b82f6,#7c3aed)}
.avatar.a2{background:linear-gradient(135deg,#ec4899,#f43f5e)}
.avatar.a3{background:linear-gradient(135deg,#10b981,#059669)}
.avatar.a4{background:linear-gradient(135deg,#f59e0b,#ea580c)}
.review-head b{display:block;font-size:16px}
.review-head span{color:var(--muted);font-size:13px}
.review-body .stars{margin-bottom:8px}
.review-body p{color:var(--text);font-size:14.5px}
.review-meta{margin-top:10px;font-size:12px;color:var(--muted)}

/* ---------- 认证背书 ---------- */
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.trust-card{
  text-align:center;padding:30px 18px;border-radius:var(--radius);
  background:#fff;border:1px solid var(--border);transition:.25s;
}
.trust-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.trust-ico{
  width:56px;height:56px;margin:0 auto 14px;border-radius:50%;
  background:linear-gradient(135deg,rgba(124,58,237,.12),rgba(217,70,239,.12));
  display:flex;align-items:center;justify-content:center;
}
.trust-ico svg{width:26px;height:26px;stroke:var(--primary);stroke-width:1.7;fill:none}
.trust-card b{font-size:15.5px;display:block;margin-bottom:6px}
.trust-card p{font-size:13px;color:var(--muted)}

/* ---------- FAQ 手风琴 ---------- */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:14px;overflow:hidden;transition:.2s}
.faq-item.open{border-color:rgba(124,58,237,.4);box-shadow:var(--shadow)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  text-align:left;padding:18px 22px;background:none;border:0;font-size:16px;font-weight:600;color:var(--text);
}
.faq-q .fq-ico{flex:none;width:26px;height:26px;border-radius:50%;background:rgba(124,58,237,.1);display:flex;align-items:center;justify-content:center;transition:.3s}
.faq-q .fq-ico svg{width:14px;height:14px;stroke:var(--primary);stroke-width:2.2;fill:none;transition:.3s}
.faq-item.open .fq-ico{transform:rotate(45deg);background:var(--grad)}
.faq-item.open .fq-ico svg{stroke:#fff}
.faq-a{display:none;padding:0 22px 20px;color:var(--muted);font-size:14.5px}
.faq-item.open .faq-a{display:block;animation:fadeIn .3s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;text-align:center;padding:80px 0;color:#fff;
  background:radial-gradient(600px 300px at 50% 120%,rgba(217,70,239,.35),transparent 70%),linear-gradient(135deg,#0b1120,#123);
}
.cta-band::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.08) 1px,transparent 1px);background-size:24px 24px;opacity:.5}
.cta-inner{position:relative}
.cta-band h2{font-size:clamp(26px,3.4vw,38px);font-weight:800;margin-bottom:16px}
.cta-band p{color:#cbd5e1;max-width:600px;margin:0 auto 30px}

/* ---------- 页脚 ---------- */
.site-footer{background:#081022;color:#94a3b8;padding:64px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.footer-brand .brand-name{color:#fff;font-size:18px}
.footer-brand p{margin-top:12px;color:#7b8aa8;line-height:1.9;max-width:300px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.footer-col ul li{margin-bottom:9px}
.footer-col a:hover{color:#c4b5fd}
.footer-seo{
  border-top:1px solid rgba(255,255,255,.07);padding:20px 0;text-align:center;
  color:#64748b;font-size:12.5px;
}
.footer-seo .fw{color:#cbd5e1;font-weight:600;font-size:13.5px;display:block;margin-bottom:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.07);padding:20px 0;text-align:center;color:#64748b;font-size:13px}
.footer-bottom a{color:#94a3b8}
.footer-bottom a:hover{color:#c4b5fd}
.footer-disclaimer{max-width:900px;margin:0 auto 4px;font-size:12px;color:#4d5b76;line-height:1.8}

/* ---------- 下载页 ---------- */
.dl-platform-bar{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;max-width:920px;margin:0 auto 40px}
.dl-tab{
  padding:14px 8px;border-radius:var(--radius-sm);border:2px solid var(--border);
  background:#fff;display:flex;flex-direction:column;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--muted);transition:.2s;
}
.dl-tab .plat-ico{width:34px;height:34px;display:flex;align-items:center;justify-content:center}
.dl-tab .plat-ico svg{width:22px;height:22px}
.dl-tab:hover{border-color:rgba(124,58,237,.4);color:var(--primary)}
.dl-tab.active{background:var(--grad);border-color:transparent;color:#fff;box-shadow:0 10px 24px rgba(124,58,237,.3)}
.dl-panel{display:none;animation:fadeIn .3s ease}
.dl-panel.active{display:block}
.dl-hero-card{
  display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;
  background:#fff;border:1px solid var(--border);border-radius:18px;padding:44px;box-shadow:var(--shadow);
}
.dl-hero-card h3{font-size:24px;font-weight:800;margin-bottom:12px}
.dl-hero-card .ver-line{color:var(--primary);font-weight:600;font-size:15px;margin-bottom:14px}
.dl-feature-list li{display:flex;gap:10px;align-items:flex-start;margin-bottom:10px;color:var(--muted);font-size:15px}
.dl-feature-list .tick{flex:none;margin-top:3px;width:18px;height:18px;border-radius:50%;background:rgba(16,185,129,.15);color:var(--ok);display:flex;align-items:center;justify-content:center}
.dl-feature-list .tick svg{width:11px;height:11px}
.dl-side{display:flex;flex-direction:column;align-items:center;gap:16px;padding:26px;border-radius:16px;background:var(--bg-alt);border:1px dashed var(--border)}
.qr-code{
  width:140px;height:140px;border-radius:14px;background:#fff;padding:10px;
  box-shadow:var(--shadow);
}
.qr-code svg{width:100%;height:100%}
.side-note{font-size:13px;color:var(--muted);text-align:center}
.qr-chip{font-size:13px;font-weight:600;color:var(--primary);background:rgba(124,58,237,.09);padding:4px 12px;border-radius:999px}

/* 安装步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.step-card{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px 22px 22px;transition:.25s}
.step-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.step-no{
  width:46px;height:46px;border-radius:12px;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;margin-bottom:16px;
  box-shadow:0 8px 18px rgba(124,58,237,.3);
}
.step-card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.step-card p{font-size:13.5px;color:var(--muted)}

/* 技术规格表 */
.spec-table{width:100%;max-width:860px;margin:0 auto;border-collapse:collapse;background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden}
.spec-table th,.spec-table td{padding:15px 20px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--border)}
.spec-table tr:last-child td{border-bottom:0}
.spec-table th{background:var(--bg-alt);color:var(--text);font-weight:600;width:38%}

/* ---------- 资讯页 ---------- */
.news-layout{display:grid;grid-template-columns:1fr 320px;gap:34px;align-items:start}
.tag-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.tag-pill{
  padding:7px 18px;border-radius:999px;font-size:14px;font-weight:600;
  border:1px solid var(--border);background:#fff;color:var(--muted);transition:.2s;
}
.tag-pill:hover{border-color:var(--primary);color:var(--primary)}
.tag-pill.on{background:var(--grad);color:#fff;border-color:transparent}
.news-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.news-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;transition:.25s;
}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.news-thumb{height:150px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.news-thumb svg{width:46px;height:46px;opacity:.9}
.news-thumb img{width:52px;height:52px;object-fit:cover;border-radius:50%;opacity:.95;box-shadow:0 8px 20px rgba(0,0,0,.22)}
.news-thumb.t1{background:linear-gradient(135deg,#7c3aed,#3b82f6)}
.news-thumb.t2{background:linear-gradient(135deg,#d946ef,#22d3ee)}
.news-thumb.t3{background:linear-gradient(135deg,#8b5cf6,#a78bfa)}
.news-thumb.t4{background:linear-gradient(135deg,#f97316,#fb923c)}
.news-thumb.t5{background:linear-gradient(135deg,#10b981,#34d399)}
.news-thumb.t6{background:linear-gradient(135deg,#ef4444,#f87171)}
.news-thumb.t7{background:linear-gradient(135deg,#0ea5e9,#38bdf8)}
.news-thumb.t8{background:linear-gradient(135deg,#f43f5e,#fb7185)}
.news-thumb .cat-badge{
  position:absolute;left:14px;bottom:14px;font-size:12px;font-weight:600;color:#fff;
  background:rgba(0,0,0,.28);padding:3px 12px;border-radius:999px;backdrop-filter:blur(4px);
}
.news-body{padding:20px 20px 24px;display:flex;flex-direction:column;flex:1}
.news-date{font-size:12.5px;color:var(--muted-2);margin-bottom:8px}
.news-body h3{font-size:17px;font-weight:700;line-height:1.55;margin-bottom:10px;transition:.2s}
.news-card:hover h3{color:var(--primary)}
.news-body p{font-size:13.5px;color:var(--muted);flex:1}
.news-more{margin-top:14px;color:var(--primary);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:4px}
.news-more svg{width:15px;height:15px;stroke:currentColor;stroke-width:2;fill:none;transition:.2s}
.news-card:hover .news-more svg{transform:translateX(4px)}

/* 侧边栏 */
.sidebar{position:sticky;top:90px;display:flex;flex-direction:column;gap:24px}
.side-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.side-card h3{font-size:17px;font-weight:700;margin-bottom:18px;position:relative;padding-left:14px}
.side-card h3::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--grad)}
.hot-list li{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--border);align-items:flex-start}
.hot-list li:last-child{border-bottom:0;padding-bottom:0}
.hot-rank{flex:none;width:24px;height:24px;border-radius:6px;background:var(--bg-alt);color:var(--muted);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:2px}
.hot-list li:nth-child(1) .hot-rank,.hot-list li:nth-child(2) .hot-rank,.hot-list li:nth-child(3) .hot-rank{background:var(--grad);color:#fff}
.hot-list a{font-size:14px;line-height:1.5;flex:1}
.hot-list a:hover{color:var(--primary)}
.hot-list em{display:block;font-style:normal;font-size:12px;color:var(--muted-2);margin-top:2px}
.newsletter-box{background:var(--grad);color:#fff;border-radius:var(--radius);padding:26px;text-align:center}
.newsletter-box h3{font-size:18px;margin-bottom:10px}
.newsletter-box p{font-size:13px;opacity:.9;margin-bottom:16px}
.newsletter-form{display:flex;gap:8px;flex-direction:column}
.newsletter-form input{
  padding:11px 16px;border-radius:999px;border:0;font-size:14px;outline:none;
  font-family:inherit;width:100%;
}
.newsletter-form button{border:0;border-radius:999px;padding:11px;font-size:14px;font-weight:700;background:#0b1120;color:#fff}
.newsletter-form button:hover{background:#16223f}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .feature-grid,.tech-grid{grid-template-columns:repeat(2,1fr)}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .hero-inner{grid-template-columns:1fr;padding:56px 0}
  .hero-visual{max-width:560px;margin:20px auto 0}
  .hero-float.f1{left:-2%}.hero-float.f2{right:-2%}
  .news-layout{grid-template-columns:1fr}
  .sidebar{position:static}
}
@media (max-width:860px){
  .main-nav{display:none;position:absolute;top:70px;left:0;right:0;background:#0b1120;flex-direction:column;padding:16px 4%;border-bottom:1px solid rgba(255,255,255,.08)}
  .main-nav.open{display:flex}
  .nav-toggle{display:block}
  .platform-strip{grid-template-columns:repeat(3,1fr)}
  .dl-platform-bar{grid-template-columns:repeat(3,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .dl-hero-card{grid-template-columns:1fr}
  .header-actions .btn{display:none}
}
@media (max-width:640px){
  .section{padding:56px 0}
  .feature-grid,.tech-grid,.review-grid,.news-grid,.trust-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .hero-points{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .platform-strip,.dl-platform-bar{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .page-hero{padding:48px 0}
  .brand-name{font-size:16px}
}