/* ============================================================
   影数鹏官网 · 共享样式（Design Token + 通用组件）
   形态：纯静态营销站（展示 + 下载），脱敏在用户本机，绝不触网
   ============================================================ */
:root{
  --bg:#0a0f1a; --bg-2:#0d1320; --surface:#111827; --surface-2:#0f1623;
  --border:rgba(255,255,255,.08); --border-strong:rgba(255,255,255,.14);
  --text:#e5e7eb; --muted:#9ca3af; --faint:#6b7280;
  --primary:#3b82f6; --primary-600:#2563eb; --primary-soft:rgba(59,130,246,.12);
  --success:#10b981; --success-soft:rgba(16,185,129,.12);
  --warn:#f59e0b; --danger:#ef4444;
  --radius:16px; --radius-sm:10px; --shadow:0 10px 30px -10px rgba(0,0,0,.6);
  --maxw:1120px;
  --font:"Inter",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.65;-webkit-font-smoothing:antialiased}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
a{color:inherit;text-decoration:none}
.eyebrow{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--primary);font-weight:600}

/* ── 导航 ── */
header.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(12px);background:rgba(10,15,26,.72);border-bottom:1px solid var(--border)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px}
.brand .logo{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--primary),#8b5cf6);display:grid;place-items:center;color:#fff;font-weight:800;font-size:15px}
.nav-links{display:flex;gap:26px;font-size:14px;color:var(--muted)}
.nav-links a:hover{color:var(--text)}
.nav-links a.active{color:var(--text)}
.nav-cta{padding:9px 18px;border-radius:10px;background:var(--primary);color:#fff;font-weight:600;font-size:14px;transition:.15s}
.nav-cta:hover{background:var(--primary-600);transform:translateY(-1px)}
@media(max-width:820px){.nav-links{display:none}}

/* ── Hero ── */
.hero{position:relative;padding:72px 0 52px;text-align:center;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 60% at 50% 0%,rgba(59,130,246,.18),transparent 70%),radial-gradient(40% 40% at 85% 20%,rgba(139,92,246,.12),transparent 70%);pointer-events:none}
.trust-pill{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border:1px solid var(--border-strong);border-radius:999px;background:var(--surface-2);font-size:13px;color:var(--muted);margin-bottom:22px}
.trust-pill .dot{width:8px;height:8px;border-radius:50%;background:var(--success);box-shadow:0 0 0 4px var(--success-soft)}
.hero h1{font-size:clamp(30px,5vw,46px);line-height:1.15;font-weight:800;letter-spacing:-.02em;margin-bottom:16px}
.hero h1 .grad{background:linear-gradient(135deg,var(--primary),#a78bfa);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.sub{font-size:17px;color:var(--muted);max-width:640px;margin:0 auto 30px}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn-primary{padding:14px 28px;border-radius:12px;background:var(--primary);color:#fff;font-weight:600;font-size:15px;transition:.15s;box-shadow:0 8px 24px -8px var(--primary);display:inline-block}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-1px)}
.btn-ghost{padding:14px 24px;border-radius:12px;border:1px solid var(--border-strong);color:var(--text);font-weight:600;font-size:15px;transition:.15s;background:var(--surface-2);display:inline-block}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}

/* ── 区块通用 ── */
section.block{padding:56px 0}
.sec-head{text-align:center;margin-bottom:36px}
.sec-head h2{font-size:28px;font-weight:800;letter-spacing:-.01em;margin:8px 0 6px}
.sec-head p{color:var(--muted);font-size:15px}

/* ── 卖点卡 ── */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:860px){.grid3{grid-template-columns:1fr}}
.feat{background:linear-gradient(180deg,var(--surface),var(--surface-2));border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:.2s}
.feat:hover{border-color:var(--border-strong);transform:translateY(-3px);box-shadow:var(--shadow)}
.feat .ic{width:42px;height:42px;border-radius:11px;background:var(--primary-soft);display:grid;place-items:center;margin-bottom:16px}
.feat .ic svg{width:22px;height:22px;color:var(--primary)}
.feat h3{font-size:17px;font-weight:700;margin-bottom:6px}
.feat p{font-size:14px;color:var(--muted)}

/* ── 演示对比 ── */
.demo-wrap{background:var(--bg-2);border-radius:var(--radius);border:1px solid var(--border);padding:28px}
.demo-tag{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--warn);background:rgba(245,158,11,.12);border:1px solid rgba(245,158,11,.25);padding:5px 12px;border-radius:999px;margin-bottom:18px}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media(max-width:760px){.compare{grid-template-columns:1fr}}
.pane{border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;background:var(--surface)}
.pane .bar{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;border-bottom:1px solid var(--border);font-size:13px;font-weight:600}
.pane .src{color:var(--faint);font-weight:400;font-size:12px}
.pane.before .bar{color:#fca5a5}.pane.after .bar{color:#6ee7b7}
.doc{font-family:var(--mono);font-size:13px;line-height:1.95;padding:16px;white-space:pre-wrap;color:var(--text)}
.doc .red{color:#fca5a5;background:rgba(239,68,68,.1);border-radius:3px;padding:0 2px}
.doc .green{color:#6ee7b7;background:rgba(16,185,129,.1);border-radius:3px;padding:0 2px}
.demo-note{font-size:12.5px;color:var(--faint);text-align:center;margin-top:16px}

/* ── 六大模块 ── */
.grid6{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media(max-width:860px){.grid6{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.grid6{grid-template-columns:1fr}}
.mod{background:var(--surface-2);border:1px solid var(--border);border-radius:12px;padding:16px;display:flex;gap:12px;align-items:flex-start}
.mod .n{flex:none;width:28px;height:28px;border-radius:8px;background:var(--primary-soft);color:var(--primary);font-weight:700;display:grid;place-items:center;font-size:13px}
.mod b{font-size:14px;font-weight:600;display:block;margin-bottom:2px}
.mod span{font-size:12.5px;color:var(--muted)}

/* ── 下载卡 ── */
.grid-os{grid-template-columns:repeat(3,1fr)}
.card{background:linear-gradient(180deg,var(--surface),var(--surface-2));border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:.2s;position:relative;overflow:hidden}
.card:hover{border-color:var(--border-strong);transform:translateY(-3px);box-shadow:var(--shadow)}
.card .os-icon{width:44px;height:44px;border-radius:12px;background:var(--primary-soft);display:grid;place-items:center;margin-bottom:16px}
.card .os-icon svg{width:24px;height:24px;color:var(--primary)}
.card h3{font-size:18px;font-weight:700;margin-bottom:4px}
.card .meta{font-size:13px;color:var(--faint);margin-bottom:18px}
.dl-btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:12px;border-radius:10px;background:var(--primary);color:#fff;font-weight:600;font-size:14px;transition:.15s}
.dl-btn:hover{background:var(--primary-600)}
.card .dl-sub{margin-top:10px;font-size:12px;color:var(--faint);text-align:center}
.vmeta{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:40px}
.vchip{font-size:13px;color:var(--muted);background:var(--surface-2);border:1px solid var(--border);border-radius:999px;padding:7px 16px}
.vchip b{color:var(--text);font-weight:600}
.sec-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
@media(max-width:860px){.sec-grid{grid-template-columns:1fr}}
.checksum{font-family:var(--mono);font-size:13px;background:#060a12;border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px;color:var(--muted);word-break:break-all;line-height:1.9}
.checksum .f{color:var(--faint)}.checksum .h{color:var(--success)}
.sig-row{display:flex;align-items:center;gap:10px;margin-top:14px;font-size:13px;color:var(--muted)}
.sig-row .ok{color:var(--success);font-weight:600}
.feat-list{list-style:none;display:flex;flex-direction:column;gap:14px}
.feat-list li{display:flex;gap:12px;align-items:flex-start}
.feat-list .ic{flex:none;width:34px;height:34px;border-radius:9px;background:var(--success-soft);display:grid;place-items:center;color:var(--success)}
.feat-list .ic svg{width:18px;height:18px}
.feat-list b{font-weight:600}.feat-list span{color:var(--muted);font-size:14px}

/* ── 步骤 ── */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:860px){.steps{grid-template-columns:1fr}}
.step{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);padding:22px}
.step .n{width:30px;height:30px;border-radius:8px;background:var(--primary-soft);color:var(--primary);font-weight:700;display:grid;place-items:center;margin-bottom:14px;font-size:14px}
.step h4{font-size:15px;font-weight:700;margin-bottom:6px}
.step p{font-size:13px;color:var(--muted)}

/* ── 企业版块 ── */
.ent{background:linear-gradient(135deg,rgba(59,130,246,.1),rgba(139,92,246,.08));border:1px solid var(--border-strong);border-radius:var(--radius);padding:32px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.ent h3{font-size:22px;font-weight:800;margin-bottom:8px}
.ent p{color:var(--muted);font-size:14px;max-width:560px}

/* ── 安全页 ── */
.flow{display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:center;margin-top:8px}
@media(max-width:760px){.flow{grid-template-columns:1fr}.flow .arrow{transform:rotate(90deg);justify-content:center}}
.flow .col{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);padding:22px}
.flow .col h4{font-size:15px;font-weight:700;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.flow .col.local h4{color:var(--success)}.flow .col.cloud h4{color:var(--danger)}
.flow .col ul{list-style:none;font-size:13px;color:var(--muted);display:flex;flex-direction:column;gap:8px}
.flow .col ul li{display:flex;gap:8px;align-items:flex-start}
.flow .col ul li svg{flex:none;width:16px;height:16px;margin-top:2px}
.flow .arrow{color:var(--faint);font-size:22px;font-weight:700}
.badges-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:28px}
.badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding:8px 14px;border:1px solid var(--border);border-radius:10px;background:var(--surface-2)}
.badge svg{width:16px;height:16px;color:var(--success)}
.compliance{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:8px}
@media(max-width:760px){.compliance{grid-template-columns:1fr}}
.cbox{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.cbox .k{font-size:13px;font-weight:700;color:var(--primary);margin-bottom:8px}
.cbox p{font-size:13px;color:var(--muted)}

/* ── CTA / Footer ── */
.cta{background:linear-gradient(135deg,rgba(59,130,246,.12),rgba(139,92,246,.1));border:1px solid var(--border-strong);border-radius:var(--radius);padding:36px;text-align:center}
.cta h2{font-size:26px;font-weight:800;margin-bottom:8px}
.cta p{color:var(--muted);font-size:15px;margin-bottom:22px}
footer{border-top:1px solid var(--border);padding:36px 0;color:var(--faint);font-size:13px;text-align:center;margin-top:56px}
footer a{color:var(--muted)}
.note{font-size:12.5px;color:var(--faint);text-align:center;margin-top:24px;max-width:680px;margin-left:auto;margin-right:auto;line-height:1.7}

/* ── 交互式演示（demo） ── */
.demo-hero{padding:52px 0 6px;text-align:center}
.demo-hero h1{font-size:clamp(26px,4vw,38px);font-weight:800;letter-spacing:-.02em;margin:14px 0 10px}
.demo-hero p{color:var(--muted);max-width:640px;margin:0 auto;font-size:15px}
.local-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border:1px solid rgba(16,185,129,.3);background:var(--success-soft);border-radius:999px;font-size:13px;color:var(--success);font-weight:600}
.demo-hero .local-badge{margin-bottom:6px}
.studio{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:26px}
@media(max-width:900px){.studio{grid-template-columns:1fr}}
.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;display:flex;flex-direction:column}
.panel h3{font-size:14px;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.sample-bar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.sample-btn{font-size:13px;padding:7px 13px;border-radius:9px;border:1px solid var(--border);background:var(--surface-2);color:var(--muted);cursor:pointer;transition:.15s}
.sample-btn:hover{border-color:var(--primary);color:var(--text)}
.sample-btn.active{background:var(--primary-soft);border-color:var(--primary);color:var(--primary)}
textarea.in{width:100%;min-height:320px;resize:vertical;background:#060a12;border:1px solid var(--border);border-radius:12px;color:var(--text);font-family:var(--mono);font-size:13px;line-height:1.95;padding:14px}
textarea.in:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}
.entity-toggles{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.chip{font-size:12.5px;padding:6px 12px;border-radius:999px;border:1px solid var(--border);background:var(--surface-2);color:var(--muted);cursor:pointer;user-select:none;transition:.15s;display:inline-flex;align-items:center;gap:6px}
.chip .box{width:14px;height:14px;border-radius:4px;border:1px solid var(--border-strong);display:grid;place-items:center;font-size:10px}
.chip.on{background:var(--primary-soft);border-color:var(--primary);color:var(--primary)}
.chip.on .box{background:var(--primary);border-color:var(--primary);color:#fff}
.strategy-seg{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-bottom:14px}
@media(max-width:520px){.strategy-seg{grid-template-columns:1fr}}
.seg{text-align:left;padding:12px 14px;border-radius:12px;border:1px solid var(--border);background:var(--surface-2);cursor:pointer;transition:.15s}
.seg:hover{border-color:var(--border-strong)}
.seg.active{border-color:var(--primary);background:var(--primary-soft)}
.seg b{display:block;font-size:14px;font-weight:700;color:var(--text);margin-bottom:3px}
.seg.active b{color:var(--primary)}
.seg span{font-size:12px;color:var(--muted)}
.out{width:100%;min-height:320px;background:#060a12;border:1px solid var(--border);border-radius:12px;color:var(--text);font-family:var(--mono);font-size:13px;line-height:1.95;padding:14px;white-space:pre-wrap;overflow:auto}
.out mark.m{background:rgba(16,185,129,.16);color:#6ee7b7;border-radius:3px;padding:0 2px;cursor:help}
.stat-bar{display:flex;gap:18px;flex-wrap:wrap;margin-top:14px;font-size:13px;color:var(--muted)}
.stat-bar b{color:var(--text);font-weight:700}
.stat-bar .ok-net{color:var(--success)}
.demo-actions{display:flex;gap:10px;margin-top:14px}
.mini-btn{padding:8px 14px;border-radius:9px;border:1px solid var(--border);background:var(--surface-2);color:var(--text);font-size:13px;cursor:pointer;transition:.15s}
.mini-btn:hover{border-color:var(--primary);color:var(--primary)}
.method-grid{display:grid;grid-template-columns:repeat(4,minmax(0,250px));gap:14px;margin-top:8px;justify-content:center}
@media(max-width:900px){.method-grid{grid-template-columns:repeat(2,minmax(0,250px));justify-content:center}}
@media(max-width:560px){.method-grid{grid-template-columns:1fr}}
.mcard{background:var(--surface-2);border:1px solid var(--border);border-radius:12px;padding:16px}
.mcard h4{font-size:14px;font-weight:700;margin-bottom:6px;color:var(--primary)}
.mcard p{font-size:12.5px;color:var(--muted);line-height:1.6}

/* ── 价格（pricing） ── */
.price-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:8px}
@media(max-width:1160px){.price-grid{grid-template-columns:repeat(2,1fr);gap:18px}}
@media(max-width:680px){.price-grid{grid-template-columns:1fr}}
.pcard{position:relative;background:linear-gradient(180deg,var(--surface),var(--surface-2));border:1px solid var(--border);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;transition:.2s}
.pcard:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.pcard.featured{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary),var(--shadow)}
.tag-best{position:absolute;top:-12px;right:16px;background:var(--primary);color:#fff;font-size:11px;font-weight:600;padding:4px 10px;border-radius:999px}
.cat{display:inline-block;align-self:flex-start;font-size:10.5px;font-weight:700;letter-spacing:.03em;padding:2px 9px;border-radius:999px;margin-bottom:8px}
.cat.c{background:var(--success-soft);color:var(--success);border:1px solid rgba(16,185,129,.3)}
.cat.b{background:rgba(139,92,246,.16);color:#a78bfa;border:1px solid rgba(139,92,246,.32)}
.pcard .tier{font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--primary);text-transform:uppercase}
.pcard .price{font-size:30px;font-weight:800;margin:10px 0 2px;white-space:nowrap}
.pcard .price .u{font-size:13px;font-weight:500;color:var(--muted)}
.pcard .desc{font-size:12px;color:var(--muted);margin-bottom:16px;min-height:36px}
.plist{list-style:none;display:flex;flex-direction:column;gap:9px;margin-bottom:18px;flex:1}
.plist li{display:flex;gap:8px;align-items:flex-start;font-size:12.5px;color:var(--text)}
.plist li svg{flex:none;width:15px;height:15px;color:var(--success);margin-top:2px}
.plist li.off{color:var(--faint)}
.plist li.off svg{color:var(--faint)}
.pbtn{display:flex;align-items:center;justify-content:center;width:100%;padding:11px;border-radius:10px;font-weight:600;font-size:13.5px;transition:.15s}
.pbtn.primary{background:var(--primary);color:#fff}
.pbtn.primary:hover{background:var(--primary-600)}
.pbtn.ghost{border:1px solid var(--border-strong);color:var(--text);background:var(--surface-2)}
.pbtn.ghost:hover{border-color:var(--primary);color:var(--primary)}

/* ── 文档（docs） ── */
.doc-wrap{display:grid;grid-template-columns:220px 1fr;gap:32px;align-items:start}
@media(max-width:900px){.doc-wrap{grid-template-columns:1fr}}
.doc-toc{position:sticky;top:84px;display:flex;flex-direction:column;gap:4px;font-size:13.5px;border-left:2px solid var(--border);padding-left:6px}
.doc-toc a{padding:7px 12px;border-radius:8px;color:var(--muted);transition:.15s}
.doc-toc a:hover{background:var(--surface-2);color:var(--text)}
.doc-toc a.active{background:var(--primary-soft);color:var(--primary);font-weight:600}
.doc-main h2{font-size:22px;font-weight:800;margin:0 0 12px;scroll-margin-top:84px}
.doc-main h3{font-size:16px;font-weight:700;margin:26px 0 8px;color:var(--text);scroll-margin-top:84px}
.doc-main p{color:var(--muted);font-size:14.5px;margin-bottom:12px;line-height:1.75}
.doc-main ul.g{list-style:none;display:flex;flex-direction:column;gap:10px;margin-bottom:14px}
.doc-main ul.g li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted)}
.doc-main ul.g li svg{flex:none;width:17px;height:17px;color:var(--success);margin-top:3px}
.doc-main code{font-family:var(--mono);font-size:13px;background:var(--surface-2);border:1px solid var(--border);border-radius:6px;padding:1px 6px;color:var(--primary)}
.callout{display:flex;gap:12px;align-items:flex-start;background:var(--primary-soft);border:1px solid rgba(59,130,246,.25);border-radius:12px;padding:14px 16px;margin:14px 0}
.callout svg{flex:none;width:18px;height:18px;color:var(--primary);margin-top:2px}
.callout span{font-size:13.5px;color:var(--text);line-height:1.7}