/* ============================================================
   墨枢 Moshu 官方宣传门户 - Demo 原型样式
   设计 Token 沿用 moshu-prototype/css/styles.css（暗黑 + 紫）
   ============================================================ */
:root {
  --bg-deep: #09090b;
  --bg-panel: #12121a;
  --bg-card: #18181b;
  --bg-elevated: #27272a;
  --text-primary: #E4E4E7;
  --text-secondary: #A1A1AA;
  --text-muted: #71717a;
  --border-subtle: #27272a;
  --border-default: #3f3f46;
  --danger-red: #EF4444;
  --warn-amber: #F59E0B;
  --safe-green: #10B981;
  --brand-purple: #8B5CF6;
  --brand-purple-soft: rgba(139,92,246,0.12);
  --accent-blue: #3B82F6;
  --font-ui: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'SimSun', Georgia, serif;
  --radius-md: 8px; --radius-lg: 12px; --radius-xl: 16px;
  --shadow-elev: 0 8px 24px rgba(0,0,0,0.6);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --container: 1160px;
}

* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: var(--font-ui);
  background: var(--bg-deep);
  color: var(--text-primary);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-blue); text-decoration:none; }
img { max-width:100%; }
.container { max-width: var(--container); margin:0 auto; padding:0 24px; }

/* ───────────── 按钮 ───────────── */
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:6px;
  padding:9px 18px; border-radius:var(--radius-md); font-size:14px; font-weight:600;
  border:1px solid transparent; cursor:pointer; transition:all 200ms var(--ease-out);
  white-space:nowrap;
}
.btn-lg { padding:13px 26px; font-size:15px; }
.btn-primary { background:var(--brand-purple); color:#fff; }
.btn-primary:hover { background:#7c4feb; box-shadow:0 4px 20px rgba(139,92,246,0.4); }
.btn-outline { border-color:var(--border-default); color:var(--text-primary); background:transparent; }
.btn-outline:hover { border-color:var(--brand-purple); color:#c4b5fd; }
.btn-ghost { color:var(--text-secondary); background:transparent; }
.btn-ghost:hover { color:var(--text-primary); }
.btn-block { width:100%; }

/* ───────────── 导航 ───────────── */
.nav {
  position:fixed; top:0; left:0; right:0; z-index:100;
  background:rgba(9,9,11,0.7); backdrop-filter:blur(14px);
  border-bottom:1px solid transparent; transition:border-color 200ms;
}
.nav.scrolled { border-bottom-color:var(--border-subtle); }
.nav-inner { display:flex; align-items:center; gap:32px; height:64px; }
.brand { display:flex; align-items:center; gap:10px; color:var(--text-primary); }
.brand-mark {
  width:34px; height:34px; border-radius:9px; display:grid; place-items:center;
  background:linear-gradient(135deg,#8B5CF6,#6D28D9);
  font-family:var(--font-serif); font-weight:700; font-size:18px; color:#fff;
  box-shadow:0 2px 12px rgba(139,92,246,0.45);
}
.brand-name { font-weight:700; font-size:17px; letter-spacing:0.02em; }
.brand-name em { font-style:normal; color:var(--text-muted); font-weight:600; font-size:13px; margin-left:4px; }
.nav-links { display:flex; gap:26px; flex:1; }
.nav-links a { color:var(--text-secondary); font-size:14px; transition:color 150ms; }
.nav-links a:hover { color:var(--text-primary); }
.nav-cta { display:flex; gap:10px; }
.nav-burger { display:none; background:none; border:none; cursor:pointer; flex-direction:column; gap:5px; padding:6px; }
.nav-burger span { width:22px; height:2px; background:var(--text-primary); border-radius:2px; transition:200ms; }
.nav-mobile { display:none; flex-direction:column; padding:8px 24px 16px; border-top:1px solid var(--border-subtle); }
.nav-mobile a { padding:10px 0; color:var(--text-secondary); font-size:15px; }
.nav.open .nav-mobile { display:flex; }

/* ───────────── Hero ───────────── */
.hero { position:relative; padding:150px 0 80px; overflow:hidden; text-align:center; }
.hero-glow {
  position:absolute; top:-220px; left:50%; transform:translateX(-50%);
  width:900px; height:560px; border-radius:50%;
  background:radial-gradient(closest-side, rgba(139,92,246,0.22), transparent);
  pointer-events:none;
}
.hero-inner { position:relative; }
.hero-badge {
  display:inline-flex; align-items:center; gap:8px; padding:6px 14px; border-radius:999px;
  border:1px solid var(--border-default); background:var(--bg-card);
  font-size:13px; color:var(--text-secondary); margin-bottom:26px;
}
.dot { width:7px; height:7px; border-radius:50%; background:var(--safe-green); box-shadow:0 0 8px var(--safe-green); }
.hero-title {
  font-size:clamp(36px, 6vw, 62px); font-weight:800; line-height:1.18; letter-spacing:0.01em;
}
.grad {
  background:linear-gradient(90deg,#a78bfa,#8B5CF6 45%,#c4b5fd);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.hero-sub {
  max-width:680px; margin:22px auto 0; color:var(--text-secondary); font-size:16px; line-height:1.85;
}
.hero-actions { display:flex; gap:14px; justify-content:center; margin-top:34px; flex-wrap:wrap; }
.hero-stats {
  display:flex; justify-content:center; gap:clamp(24px, 6vw, 80px); margin-top:52px; flex-wrap:wrap;
}
.stat { display:flex; flex-direction:column; gap:2px; }
.stat b { font-size:30px; font-weight:800; color:#c4b5fd; font-variant-numeric:tabular-nums; }
.stat-plus { font-size:18px; }
.stat span { font-size:13px; color:var(--text-muted); }

/* Hero 模拟窗口 */
.hero-app {
  margin:64px auto 0; max-width:960px; border-radius:var(--radius-xl);
  border:1px solid var(--border-default); background:var(--bg-panel);
  box-shadow:var(--shadow-elev), 0 0 80px rgba(139,92,246,0.10);
  text-align:left; overflow:hidden;
}
.win-bar { display:flex; align-items:center; gap:12px; padding:10px 14px; border-bottom:1px solid var(--border-subtle); background:var(--bg-card); }
.win-dots { display:flex; gap:6px; }
.win-dots i { width:10px; height:10px; border-radius:50%; background:var(--bg-elevated); }
.win-dots i:nth-child(1){ background:#EF4444; } .win-dots i:nth-child(2){ background:#F59E0B; } .win-dots i:nth-child(3){ background:#10B981; }
.win-title { font-size:12px; color:var(--text-muted); }
.win-body { display:grid; grid-template-columns:210px 1fr; min-height:330px; }
.win-side { border-right:1px solid var(--border-subtle); padding:14px 10px; background:var(--bg-panel); }
.ws-item { padding:7px 10px; border-radius:6px; font-size:13px; color:var(--text-secondary); margin-bottom:2px; }
.ws-sub { padding-left:22px; font-size:12.5px; }
.ws-item.active { background:var(--brand-purple-soft); color:#c4b5fd; }
.win-main { padding:26px 34px; position:relative; font-family:var(--font-serif); }
.wm-para { font-size:15.5px; line-height:2; text-indent:2em; color:var(--text-primary); margin-bottom:12px; }
.mk { border-radius:4px; padding:0 3px; }
.mk-red    { background:rgba(239,68,68,0.18);  color:#fca5a5; border-bottom:2px dashed rgba(239,68,68,0.55); }
.mk-purple { background:rgba(139,92,246,0.20); color:#c4b5fd; border-bottom:2px dashed rgba(139,92,246,0.55); }
.mk-amber  { background:rgba(245,158,11,0.16); color:#fcd34d; border-bottom:2px dashed rgba(245,158,11,0.55); }
.wm-panel {
  position:absolute; right:20px; bottom:18px; width:290px;
  background:var(--bg-card); border:1px solid var(--border-default); border-radius:var(--radius-lg);
  padding:12px 14px; box-shadow:var(--shadow-elev); font-family:var(--font-ui);
}
.wmp-head { font-size:12px; color:var(--text-muted); margin-bottom:9px; }
.wmp-row { display:flex; align-items:center; gap:8px; font-size:12px; color:var(--text-secondary); margin-bottom:6px; }
.tag { padding:2px 8px; border-radius:999px; font-size:11px; font-weight:600; white-space:nowrap; }
.tag-red    { background:rgba(239,68,68,0.15);  color:#fca5a5; }
.tag-amber  { background:rgba(245,158,11,0.15); color:#fcd34d; }
.tag-purple { background:rgba(139,92,246,0.18); color:#c4b5fd; }
.tag-blue   { background:rgba(59,130,246,0.15); color:#93c5fd; }
.tag-green  { background:rgba(16,185,129,0.15); color:#6ee7b7; }

/* ───────────── 通用 Section ───────────── */
.section { padding:96px 0; }
.section-alt { background:var(--bg-panel); border-top:1px solid var(--border-subtle); border-bottom:1px solid var(--border-subtle); }
.sec-head { text-align:center; max-width:660px; margin:0 auto 56px; }
.sec-kicker {
  display:inline-block; font-size:12px; font-weight:700; letter-spacing:0.25em;
  color:var(--brand-purple); margin-bottom:14px;
}
.sec-title { font-size:clamp(26px, 4vw, 38px); font-weight:800; line-height:1.3; }
.sec-title em { font-style:normal; color:#c4b5fd; }
.sec-sub { color:var(--text-secondary); margin-top:14px; font-size:15.5px; }
.grid { display:grid; gap:20px; }
.grid-3 { grid-template-columns:repeat(3, 1fr); }
.grid-4 { grid-template-columns:repeat(4, 1fr); }
.card {
  background:var(--bg-card); border:1px solid var(--border-subtle); border-radius:var(--radius-xl);
  transition:border-color 250ms var(--ease-out), transform 250ms var(--ease-out);
}

/* 能力卡片 */
.feat-card { padding:28px 26px; }
.feat-card:hover { border-color:var(--brand-purple); transform:translateY(-4px); }
.feat-icon {
  width:46px; height:46px; border-radius:12px; display:grid; place-items:center;
  font-size:22px; margin-bottom:18px;
}
.fi-purple { background:var(--brand-purple-soft); }
.fi-blue   { background:rgba(59,130,246,0.12); }
.fi-green  { background:rgba(16,185,129,0.12); }
.fi-amber  { background:rgba(245,158,11,0.12); }
.feat-card h3 { font-size:17px; font-weight:700; margin-bottom:10px; }
.feat-card p { font-size:14px; color:var(--text-secondary); line-height:1.75; }
.feat-card b { color:#c4b5fd; font-weight:600; }

/* ───────────── 流水线 ───────────── */
.pipe { max-width:1080px; margin:0 auto; }
.pipe-track {
  display:flex; align-items:center; gap:20px; flex-wrap:wrap; justify-content:center;
  padding:30px 24px; background:var(--bg-card); border:1px solid var(--border-subtle);
  border-radius:var(--radius-xl);
}
.pipe-node {
  position:relative; flex:1 1 92px;
  display:flex; flex-direction:column; align-items:center; gap:6px;
  padding:14px 16px; border-radius:var(--radius-lg); border:1px solid var(--border-default);
  background:var(--bg-panel); cursor:pointer; transition:all 200ms var(--ease-out);
  min-width:92px;
}
.pipe-node:hover { border-color:var(--brand-purple); }
.pipe-node.active { border-color:var(--brand-purple); background:var(--brand-purple-soft); box-shadow:0 0 18px rgba(139,92,246,0.25); }
.pn-icon { font-size:20px; }
.pn-name { font-size:13px; font-weight:600; }
.pn-idx { font-size:10px; color:var(--text-muted); }
.pipe-arrow { color:var(--text-muted); font-size:16px; margin:0 -8px; }
/* 循环节点（章节单元 ×N）：仅当该节点为当前步骤时才旋转/呼吸 */
.pipe-node-loop { border-color:rgba(139,92,246,0.55); }
.pipe-node-loop.active { animation:loopglow 2.6s ease-in-out infinite; }
@keyframes loopglow {
  0%,100% { box-shadow:0 0 0 0 rgba(139,92,246,0.0); }
  50%     { box-shadow:0 0 16px 2px rgba(139,92,246,0.35); }
}
.pn-loop {
  position:absolute; top:-9px; right:-9px; width:22px; height:22px; z-index:1;
  display:flex; align-items:center; justify-content:center;
  font-size:14px; line-height:1; color:#fff; border-radius:50%;
  background:var(--brand-purple); box-shadow:0 0 0 2px var(--bg-card), 0 0 10px rgba(139,92,246,0.6);
}
.pipe-node-loop.active .pn-loop { animation:loopspin 2.4s linear infinite; }
@keyframes loopspin { to { transform:rotate(360deg); } }
/* 自动播放进度条 */
.pipe-progress { height:3px; margin-top:-1px; border-radius:0 0 var(--radius-xl) var(--radius-xl); background:var(--bg-elevated); overflow:hidden; }
.pipe-progress i { display:block; height:100%; width:0; background:linear-gradient(90deg,var(--brand-purple),#a78bfa); }
.pipe-progress i.run { animation:pipebar 5s linear forwards; }
@keyframes pipebar { from{width:0} to{width:100%} }
.pipe-hint { text-align:center; font-size:12px; color:var(--text-muted); margin-top:12px; }

/* 阶段详情：左叙述 + 右产出 两栏 */
.pipe-detail {
  margin-top:20px; padding:28px 32px; min-height:220px;
  border-left:3px solid var(--brand-purple);
  display:grid; grid-template-columns:1.35fr 1fr; gap:34px;
}
.pd-head { display:flex; align-items:center; gap:12px; margin-bottom:10px; }
.pd-badge { font-size:11px; font-weight:700; letter-spacing:0.08em; color:#c4b5fd;
  background:var(--brand-purple-soft); border:1px solid rgba(139,92,246,0.35);
  padding:3px 9px; border-radius:999px; white-space:nowrap; }
.pipe-detail h3 { font-size:18px; color:#c4b5fd; }
.pd-desc { font-size:14.5px; color:var(--text-secondary); line-height:1.8; }
.pd-sub { display:flex; gap:8px; flex-wrap:wrap; margin-top:16px; }
.pd-sub .pd-tag { background:var(--brand-purple-soft); color:#c4b5fd; border:1px solid rgba(139,92,246,0.3); }
.pd-caps { list-style:none; margin-top:18px; display:flex; flex-direction:column; gap:10px; }
.pd-caps li { position:relative; padding-left:22px; font-size:13.5px; color:var(--text-secondary); line-height:1.6; }
.pd-caps li::before { content:'▸'; position:absolute; left:4px; top:0; color:var(--brand-purple); }
.pd-right { background:var(--bg-panel); border:1px solid var(--border-subtle);
  border-radius:var(--radius-lg); padding:18px 20px; }
.pd-out-title { font-size:12px; font-weight:700; letter-spacing:0.06em; color:var(--text-muted);
  text-transform:uppercase; margin-bottom:14px; }
.pd-outputs { list-style:none; display:flex; flex-direction:column; gap:11px; }
.pd-outputs li { display:flex; align-items:flex-start; gap:9px; font-size:13.5px; color:var(--text-primary); line-height:1.5; }
.pd-outputs li::before { content:'✓'; color:var(--safe-green); font-weight:700; flex-shrink:0; }
.pd-meta { margin-top:16px; padding-top:14px; border-top:1px solid var(--border-subtle);
  font-size:12px; color:var(--text-muted); line-height:1.6; }
.pd-meta b { color:#c4b5fd; font-weight:600; }
.pipe-detail .pd-tags { margin-top:12px; display:flex; gap:8px; flex-wrap:wrap; }
.pd-tag { font-size:12px; padding:3px 10px; border-radius:999px; background:var(--bg-elevated); color:var(--text-secondary); }

/* ───────────── AI 味检测 ───────────── */
.detect-wrap { display:grid; grid-template-columns:1.1fr 1fr; gap:60px; align-items:center; }
.detect-list { list-style:none; margin-top:26px; display:flex; flex-direction:column; gap:13px; }
.detect-list li { display:flex; align-items:center; gap:12px; font-size:14.5px; color:var(--text-secondary); }
.detect-demo { padding:24px 26px; }
.dd-head { display:flex; align-items:center; gap:8px; font-size:13px; color:var(--text-muted); padding-bottom:14px; border-bottom:1px solid var(--border-subtle); margin-bottom:16px; }
.dot-red { background:var(--danger-red); box-shadow:0 0 8px var(--danger-red); }
.dd-score { margin-left:auto; font-weight:700; color:var(--safe-green); font-size:13px; }
.dd-p { font-family:var(--font-serif); font-size:15px; line-height:2.05; margin-bottom:10px; text-indent:2em; }
.dd-applied .mk-applied {
  border-bottom:2px solid var(--safe-green); background:rgba(16,185,129,0.12);
  padding:0 3px; border-radius:4px;
}
.mk-ok { font-family:var(--font-ui); font-size:11px; color:var(--safe-green); margin-left:8px; }
.dd-foot { margin-top:18px; padding-top:16px; border-top:1px solid var(--border-subtle); display:flex; align-items:center; gap:12px; }
.dd-bar { flex:1; height:6px; border-radius:3px; background:var(--bg-elevated); overflow:hidden; }
.dd-bar i { display:block; height:100%; border-radius:3px; background:linear-gradient(90deg,var(--safe-green),#34d399); }
.dd-note { font-size:12px; color:var(--text-muted); white-space:nowrap; }

/* ───────────── 定价 ───────────── */
.price-grid { align-items:stretch; }
.price-card { padding:28px 22px; display:flex; flex-direction:column; position:relative; }
.pc-hot { border-color:var(--brand-purple); box-shadow:0 0 40px rgba(139,92,246,0.18); transform:scale(1.03); }
.pc-flag {
  position:absolute; top:-12px; left:50%; transform:translateX(-50%);
  background:var(--brand-purple); color:#fff; font-size:11px; font-weight:700;
  padding:4px 14px; border-radius:999px; white-space:nowrap;
}
.pc-name { font-size:15px; font-weight:700; color:var(--text-secondary); }
.pc-price { font-size:clamp(26px, 2.6vw, 34px); font-weight:800; margin:12px 0 4px; color:#c4b5fd; white-space:nowrap; }
.pc-unit { font-size:13px; font-weight:500; color:var(--text-muted); }
.pc-desc { font-size:13px; color:var(--text-muted); margin-bottom:20px; }
.pc-list { list-style:none; flex:1; display:flex; flex-direction:column; gap:11px; margin-bottom:24px; }
.pc-list li { font-size:13.5px; color:var(--text-secondary); }
.price-note { text-align:center; margin-top:30px; font-size:13px; color:var(--text-muted); }

/* ───────────── CTA ───────────── */
#download { padding:110px 0; }
.cta-wrap { position:relative; text-align:center; }
.cta-glow {
  position:absolute; inset:-80px 0 auto; height:400px; top:-120px;
  background:radial-gradient(closest-side, rgba(139,92,246,0.16), transparent);
  pointer-events:none;
}
.cta-wrap .sec-title, .cta-wrap .sec-sub { position:relative; }
.cta-actions { display:flex; gap:14px; justify-content:center; margin-top:34px; flex-wrap:wrap; position:relative; }
.cta-plats { display:flex; gap:10px; justify-content:center; margin-top:28px; position:relative; }
.cta-plats span { font-size:12px; padding:5px 14px; border-radius:999px; border:1px solid var(--border-default); color:var(--text-secondary); }
.cta-soon { opacity:0.5; }

/* ───────────── 页脚 ───────────── */
.footer { border-top:1px solid var(--border-subtle); background:var(--bg-panel); padding:52px 0 0; }
.footer-inner { display:flex; justify-content:space-between; gap:40px; padding-bottom:40px; flex-wrap:wrap; }
.f-brand { display:flex; gap:14px; max-width:340px; }
.f-brand b { font-size:16px; }
.f-brand p { font-size:13px; color:var(--text-muted); margin-top:6px; line-height:1.7; }
.f-cols { display:flex; gap:clamp(40px, 8vw, 100px); flex-wrap:wrap; }
.f-cols h4 { font-size:13px; color:var(--text-primary); margin-bottom:14px; }
.f-cols a { display:block; font-size:13px; color:var(--text-muted); margin-bottom:9px; transition:color 150ms; }
.f-cols a:hover { color:var(--brand-purple); }
.footer-bottom { border-top:1px solid var(--border-subtle); padding:20px 24px; font-size:12px; color:var(--text-muted); text-align:center; }

/* ───────────── 滚动入场动画 ───────────── */
.reveal { opacity:0; transform:translateY(24px); transition:opacity 600ms var(--ease-out), transform 600ms var(--ease-out); }
.reveal.in { opacity:1; transform:none; }

/* ───────────── 响应式 ───────────── */
@media (max-width: 960px) {
  .grid-3 { grid-template-columns:repeat(2,1fr); }
  .grid-4 { grid-template-columns:repeat(2,1fr); }
  .detect-wrap { grid-template-columns:1fr; gap:40px; }
  .pc-hot { transform:none; }
  .pipe-detail { grid-template-columns:1fr; gap:22px; }
}
@media (max-width: 720px) {
  .nav-links, .nav-cta { display:none; }
  .nav-burger { display:flex; margin-left:auto; }
  .grid-3, .grid-4 { grid-template-columns:1fr; }
  .hero { padding-top:120px; }
  .win-body { grid-template-columns:1fr; }
  .win-side { display:none; }
  .wm-panel { position:static; width:auto; margin-top:14px; }
  .section { padding:64px 0; }
}