/* =========================================================
   Specloom（经纬）官网样式
   深色现代 · 渐变点缀 · 经纬编织意象 · 响应式
   零外部依赖：系统字体栈，无远程字体 (NFR-P2)
   ========================================================= */

:root{
  --bg:#0a0c12;
  --bg-2:#0e111a;
  --surface:#12151f;
  --surface-2:#171b28;
  --line:#222838;
  --text:#eef1f8;
  --muted:#aab2c6;        /* 提亮以满足正文对比度 AA ≥4.5:1 (NFR-A2) */
  --muted-2:#828aa0;
  --warp:#5b8cff;          /* 经线 warp */
  --weft:#b06bff;          /* 纬线 weft */
  --accent:#56e0c8;
  --grad:linear-gradient(120deg,#5b8cff 0%,#b06bff 60%,#56e0c8 100%);
  --radius:16px;
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",Helvetica,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
/* 经纬编织背景纹理（纯装饰） */
body::before{
  content:"";
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(90deg,rgba(91,140,255,.045) 1px,transparent 1px),
    linear-gradient(0deg,rgba(176,107,255,.045) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 75%);
  mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 75%);
}
a{color:inherit;text-decoration:none}
img,svg{display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;position:relative;z-index:1}
section{position:relative;z-index:1}

:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}

/* ---------- BUTTONS ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  font:inherit;font-weight:600;font-size:14px;cursor:pointer;
  padding:10px 18px;border-radius:10px;border:1px solid transparent;transition:.18s;white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#0a0c12;border:none}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-ghost{background:var(--surface);color:var(--text);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--warp);background:var(--surface-2)}
.btn-sm{padding:7px 14px;font-size:13px}

/* ---------- NAV ---------- */
header.nav{
  position:sticky;top:0;z-index:50;
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  backdrop-filter:saturate(160%) blur(14px);
  background:rgba(10,12,18,.72);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:.3px}
.brand .mark{width:30px;height:30px;flex:0 0 auto}
.brand .zh{color:var(--muted);font-weight:600;font-size:14px}
.nav-links{display:flex;gap:6px;margin-left:auto}
.nav-links a{color:var(--muted);font-size:14px;padding:8px 12px;border-radius:8px;transition:.18s}
.nav-links a:hover{color:var(--text);background:var(--surface-2)}
.nav-tools{display:flex;align-items:center;gap:10px;margin-left:18px}
.lang-switch{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;background:var(--surface)}
.lang-switch button{
  background:none;border:none;color:var(--muted);font:inherit;font-size:13px;font-weight:600;
  padding:6px 14px;cursor:pointer;transition:.18s;
}
.lang-switch button[aria-pressed="true"]{background:var(--grad);color:#0a0c12}

.nav-toggle{display:none;background:var(--surface);border:1px solid var(--line);color:var(--text);
  border-radius:8px;width:38px;height:38px;font-size:18px;cursor:pointer}

.mobile-menu{border-bottom:1px solid var(--line);background:rgba(10,12,18,.96)}
.mobile-menu .wrap{display:flex;flex-direction:column;padding-top:8px;padding-bottom:14px}
.mobile-menu a{color:var(--muted);padding:12px 4px;border-bottom:1px solid var(--line);font-size:15px}
.mobile-menu a:last-child{border-bottom:none}

/* ---------- HERO ---------- */
.hero{padding:96px 0 80px;text-align:center}
.badge{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);
  border:1px solid var(--line);background:var(--surface);padding:6px 14px;border-radius:999px;margin-bottom:28px;
}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}
h1.title{
  font-size:clamp(38px,6.4vw,76px);line-height:1.05;font-weight:800;letter-spacing:-1.5px;margin-bottom:8px;
}
h1.title .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.title-zh{font-size:clamp(20px,3vw,30px);color:var(--muted);font-weight:600;margin-bottom:22px;letter-spacing:4px}
.lede{font-size:clamp(16px,2.1vw,21px);color:var(--muted);max-width:680px;margin:0 auto 38px}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-cta .btn{padding:14px 26px;font-size:15px}
.loom{margin:64px auto 0;max-width:760px;position:relative}
.loom svg{width:100%;height:70px;display:block}

/* ---------- SECTION SHELL ---------- */
.sec{padding:84px 0;border-top:1px solid var(--line)}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:2px;text-transform:uppercase;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:14px}
h2{font-size:clamp(28px,4vw,44px);font-weight:800;letter-spacing:-.8px;margin-bottom:16px;line-height:1.12}
.sec-lede{color:var(--muted);font-size:17px;max-width:680px;margin-bottom:48px}

/* ---------- WHAT cards ---------- */
.grid{display:grid;gap:18px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{
  background:linear-gradient(180deg,var(--surface) 0%,var(--bg-2) 100%);
  border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.2s;position:relative;overflow:hidden;
}
.card:hover{border-color:#33405e;transform:translateY(-3px)}
.card .ic{width:42px;height:42px;border-radius:11px;display:grid;place-items:center;margin-bottom:16px;
  background:rgba(91,140,255,.12);border:1px solid rgba(91,140,255,.3);color:var(--warp)}
.card h3{font-size:18px;margin-bottom:8px;font-weight:700}
.card p{color:var(--muted);font-size:15px}

/* ---------- WHY two-mode ---------- */
.modes{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:8px}
.mode{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:30px;position:relative}
.mode.simple{border-color:rgba(86,224,200,.35)}
.mode.complex{border-color:rgba(176,107,255,.35)}
.mode .tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase;
  padding:5px 11px;border-radius:7px;margin-bottom:16px}
.mode.simple .tag{background:rgba(86,224,200,.14);color:var(--accent)}
.mode.complex .tag{background:rgba(176,107,255,.16);color:#c89bff}
.mode h3{font-size:21px;margin-bottom:10px}
.mode p{color:var(--muted);font-size:15px;margin-bottom:18px}
.mode ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.mode li{display:flex;gap:10px;font-size:14.5px;color:var(--text)}
.mode li::before{content:"";flex:0 0 auto;width:18px;height:18px;margin-top:3px;border-radius:50%;
  background:var(--grad);
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M9 16.2l-3.5-3.5-1.4 1.4L9 19 20 8l-1.4-1.4z'/%3E%3C/svg%3E") center/14px no-repeat;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M9 16.2l-3.5-3.5-1.4 1.4L9 19 20 8l-1.4-1.4z'/%3E%3C/svg%3E") center/14px no-repeat}

/* ---------- PIPELINE ---------- */
.mode-toggle{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden;margin-bottom:26px}
.mode-toggle button{background:var(--surface);border:none;color:var(--muted);font:inherit;font-weight:600;
  font-size:14px;padding:10px 20px;cursor:pointer;transition:.18s}
.mode-toggle button[aria-pressed="true"]{background:var(--grad);color:#0a0c12}
.pipe{display:flex;align-items:stretch;gap:0;margin-top:10px;overflow-x:auto;padding-bottom:8px;scrollbar-width:thin}
.stage{
  flex:1 1 0;min-width:150px;background:var(--surface);border:1px solid var(--line);
  border-radius:14px;padding:20px 18px;position:relative;transition:.2s;cursor:default;
}
.stage:hover{border-color:var(--warp);background:var(--surface-2);transform:translateY(-3px)}
.stage .num{font-size:12px;font-weight:700;color:var(--muted-2);letter-spacing:1px}
.stage .nm{font-size:17px;font-weight:700;margin:8px 0 6px}
.stage .ds{font-size:13px;color:var(--muted);line-height:1.45}
.stage .gate{position:absolute;top:14px;right:14px;font-size:11px;font-weight:700;padding:3px 8px;border-radius:6px}
.stage .gate.auto{background:rgba(86,224,200,.14);color:var(--accent)}
.stage .gate.human{background:rgba(176,107,255,.16);color:#c89bff}
.pipe-arrow{flex:0 0 26px;display:grid;place-items:center;color:var(--muted-2)}
.pipe-legend{display:flex;gap:22px;margin-top:24px;flex-wrap:wrap;font-size:13.5px;color:var(--muted);align-items:center}
.pipe-legend span{display:inline-flex;align-items:center;gap:8px}
.pipe-legend .legend-note{color:var(--muted-2)}
.lg-dot{width:11px;height:11px;border-radius:4px}
.lg-auto{background:var(--accent)}
.lg-human{background:#c89bff}

/* ---------- INSTALL ---------- */
.install-wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center}
.code-block{background:#06070b;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.code-head{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--surface)}
.code-head .dots{display:flex;gap:7px}
.code-head .dots i{width:11px;height:11px;border-radius:50%;display:inline-block}
.code-head .dots i:nth-child(1){background:#ff5f57}
.code-head .dots i:nth-child(2){background:#febc2e}
.code-head .dots i:nth-child(3){background:#28c840}
.copy-btn{background:var(--surface-2);border:1px solid var(--line);color:var(--text);font:inherit;
  font-size:12.5px;font-weight:600;padding:6px 13px;border-radius:8px;cursor:pointer;transition:.18s;display:inline-flex;gap:6px;align-items:center}
.copy-btn:hover{border-color:var(--warp)}
.copy-btn.ok{border-color:var(--accent);color:var(--accent)}
.code-body{padding:20px 18px;font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace;font-size:14.5px;line-height:1.9;color:#dfe6f5;overflow-x:auto;white-space:pre-wrap;word-break:break-word}
.code-body .pl{color:var(--muted-2);-webkit-user-select:none;user-select:none}
.code-body .cmd{color:#dfe6f5}
.code-body .note{display:block;color:var(--muted-2);font-size:12px;margin-top:10px;font-style:italic}
.install-info h3{font-size:20px;margin-bottom:12px}
.install-info p{color:var(--muted);font-size:15px;margin-bottom:18px}
.install-info .btn{margin-right:10px;margin-bottom:10px}

/* ---------- FOOTER ---------- */
footer{border-top:1px solid var(--line);padding:46px 0 56px;margin-top:30px}
.foot-inner{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;align-items:flex-start}
.foot-brand{max-width:320px}
.foot-brand .brand{margin-bottom:12px}
.foot-brand .mark{width:26px;height:26px}
.foot-brand p{color:var(--muted);font-size:14px}
.foot-links{display:flex;gap:50px;flex-wrap:wrap}
.foot-col h4{font-size:13px;text-transform:uppercase;letter-spacing:1px;color:var(--muted-2);margin-bottom:14px}
.foot-col a{display:block;color:var(--muted);font-size:14.5px;margin-bottom:10px;transition:.15s}
.foot-col a:hover{color:var(--text)}
.foot-bottom{margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;color:var(--muted-2);font-size:13px}

/* ---------- TOAST ---------- */
.toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--surface-2);border:1px solid var(--accent);color:var(--text);padding:12px 22px;border-radius:10px;
  font-size:14px;opacity:0;pointer-events:none;transition:.25s;z-index:100;box-shadow:0 10px 40px rgba(0,0,0,.5)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- RESPONSIVE ---------- */
@media (max-width:920px){
  .install-wrap{grid-template-columns:1fr;gap:26px}
  .grid-3{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .nav-links{display:none}
  .nav-tools{margin-left:auto}
  .nav-toggle{display:block}
  .nav-cta{display:none}                /* 收起到汉堡菜单时隐藏导航安装按钮，Install 走 Hero CTA / 折叠菜单 */
  .hero{padding:64px 0 56px}
  .sec{padding:60px 0}
  .grid-3,.modes{grid-template-columns:1fr}
  .foot-inner{flex-direction:column}
}
@media (max-width:420px){
  .wrap{padding:0 18px}
  .nav-tools{gap:8px;margin-left:8px}
  .hero-cta{flex-direction:column}
  .hero-cta .btn{width:100%}
  .title-zh{letter-spacing:2px}
}

/* ---------- NAV: 滚动加深 ---------- */
header.nav.scrolled{
  background:rgba(8,10,15,.92);
  box-shadow:0 1px 0 var(--line),0 10px 30px rgba(0,0,0,.38);
}

/* ---------- HERO: 信任条 ---------- */
.hero-meta{
  display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:10px;
  margin:26px auto 0;color:var(--muted);font-size:14px;
}
.hero-meta .sep{color:var(--muted-2)}

/* ---------- HERO: 产品视觉窗口（spec → 产物） ---------- */
.showcase{margin:60px auto 0;max-width:880px;position:relative}
.showcase::before{
  content:"";position:absolute;inset:-8% -4% auto;height:70%;z-index:0;pointer-events:none;
  background:radial-gradient(60% 100% at 50% 0%,rgba(176,107,255,.22),transparent 70%);
  filter:blur(20px);
}
.window{
  position:relative;z-index:1;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.5);text-align:left;
}
.win-bar{
  display:flex;align-items:center;gap:8px;padding:11px 16px;
  background:var(--surface-2);border-bottom:1px solid var(--line);
}
.win-bar .d{width:11px;height:11px;border-radius:50%;display:inline-block}
.win-bar .d.r{background:#ff5f57}
.win-bar .d.y{background:#febc2e}
.win-bar .d.g{background:#28c840}
.win-bar .win-title{margin-left:8px;font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;color:var(--muted)}
.win-bar .win-tag{margin-left:auto;font-size:12px;font-weight:700;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.win-body{display:grid;grid-template-columns:1.15fr 1fr}
.codecol{background:#06070b;padding:18px 20px;border-right:1px solid var(--line)}
.show-code{
  font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace;font-size:13px;line-height:1.85;
  white-space:pre-wrap;word-break:break-word;margin:0;
}
.show-code .cm{color:var(--muted-2)}
.show-code .kw{color:var(--accent)}
.show-code .ln{color:#dfe6f5}
.gencol{padding:18px 20px;background:linear-gradient(180deg,var(--surface) 0%,var(--bg-2) 100%)}
.gen-head{display:flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;color:var(--muted);margin-bottom:14px;letter-spacing:.3px}
.gen-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}
.gen-list{list-style:none;display:flex;flex-direction:column;gap:11px}
.gen-list li{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--muted)}
.gen-list code{
  font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace;font-size:12px;color:#dfe6f5;
  background:rgba(91,140,255,.1);border:1px solid rgba(91,140,255,.22);border-radius:6px;padding:1px 7px;white-space:nowrap;
}
.gen-list .tk{flex:0 0 auto;width:16px;height:16px;border-radius:50%;background:var(--grad);
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M9 16.2l-3.5-3.5-1.4 1.4L9 19 20 8l-1.4-1.4z'/%3E%3C/svg%3E") center/12px no-repeat;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M9 16.2l-3.5-3.5-1.4 1.4L9 19 20 8l-1.4-1.4z'/%3E%3C/svg%3E") center/12px no-repeat}

/* ---------- STEPS: 三步怎么用 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;position:relative;transition:.2s}
.step:hover{border-color:#33405e;transform:translateY(-3px)}
.step-n{font-size:34px;font-weight:800;letter-spacing:-1px;line-height:1;margin-bottom:14px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.step h3{font-size:18px;margin-bottom:8px;font-weight:700}
.step p{color:var(--muted);font-size:14.5px}

@media (max-width:760px){
  .win-body{grid-template-columns:1fr}
  .codecol{border-right:none;border-bottom:1px solid var(--line)}
  .steps{grid-template-columns:1fr}
  .showcase{margin-top:42px}
}

/* ---------- ROADMAP / 团队版（规划中） ---------- */
.roadmap-h{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.planned-badge{
  font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase;
  padding:5px 11px;border-radius:999px;background:rgba(176,107,255,.16);color:#c89bff;
  border:1px solid rgba(176,107,255,.34);
}
.roadmap-grid{margin-top:8px}
.card.planned{border-style:dashed;background:linear-gradient(180deg,rgba(18,21,31,.55),rgba(14,17,26,.55))}
.card.planned h3{display:flex;align-items:center;gap:8px}
.card.planned h3::before{content:"";width:9px;height:9px;border-radius:50%;
  background:transparent;border:2px solid #c89bff;flex:0 0 auto}

/* ---------- DOC PAGE（guide.html） ---------- */
.doc{padding:48px 0 24px}
.doc-wrap{max-width:880px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.doc-back{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:14px;margin-bottom:26px}
.doc-back:hover{color:var(--text)}
.doc h1{font-size:clamp(30px,5vw,46px);font-weight:800;letter-spacing:-.8px;margin-bottom:12px}
.doc .doc-sub{color:var(--muted);font-size:17px;margin-bottom:36px;max-width:680px}
.doc-toc{border:1px solid var(--line);background:var(--surface);border-radius:14px;padding:18px 22px;margin-bottom:44px}
.doc-toc h4{font-size:12px;text-transform:uppercase;letter-spacing:1px;color:var(--muted-2);margin-bottom:12px}
.doc-toc ol{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:8px 24px;counter-reset:toc}
.doc-toc a{color:var(--muted);font-size:14.5px;display:inline-flex;gap:8px}
.doc-toc a:hover{color:var(--text)}
.doc-toc a::before{counter-increment:toc;content:counter(toc,decimal-leading-zero);color:var(--weft);font-weight:700}
.doc section{scroll-margin-top:80px;margin-bottom:40px}
.doc section>h2{font-size:25px;font-weight:800;letter-spacing:-.4px;margin-bottom:14px;
  padding-bottom:10px;border-bottom:1px solid var(--line)}
.doc h3{font-size:17px;font-weight:700;margin:22px 0 8px}
.doc p{color:var(--muted);font-size:15.5px;margin-bottom:12px}
.doc ul,.doc ol.steps-ol{margin:0 0 14px;padding-left:0;list-style:none;display:flex;flex-direction:column;gap:9px}
.doc li{display:flex;gap:10px;font-size:15px;color:var(--text);line-height:1.6}
.doc li::before{content:"";flex:0 0 auto;width:18px;height:18px;margin-top:3px;border-radius:50%;background:var(--grad);
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M9 16.2l-3.5-3.5-1.4 1.4L9 19 20 8l-1.4-1.4z'/%3E%3C/svg%3E") center/13px no-repeat;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M9 16.2l-3.5-3.5-1.4 1.4L9 19 20 8l-1.4-1.4z'/%3E%3C/svg%3E") center/13px no-repeat}
.doc code{font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace;font-size:13px;color:#dfe6f5;
  background:rgba(91,140,255,.1);border:1px solid rgba(91,140,255,.22);border-radius:6px;padding:1px 7px}
.doc pre{background:#06070b;border:1px solid var(--line);border-radius:12px;padding:16px 18px;overflow-x:auto;margin:0 0 16px}
.doc pre code{background:none;border:none;padding:0;line-height:1.85;display:block;color:#dfe6f5}
.doc table{width:100%;border-collapse:collapse;margin:0 0 16px;font-size:14.5px}
.doc th,.doc td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
.doc th{color:var(--muted-2);font-size:12.5px;text-transform:uppercase;letter-spacing:.5px}
.doc td{color:var(--muted)}
.doc td code{white-space:nowrap}
.doc .note{border-left:3px solid var(--accent);background:var(--surface);border-radius:0 10px 10px 0;
  padding:14px 16px;color:var(--muted);font-size:14.5px;margin:0 0 16px}
@media (max-width:640px){
  .doc-toc ol{grid-template-columns:1fr}
}

/* ---------- FLOW MAP：从需求到交付（3D 动态，零依赖）---------- */
.flowmap-wrap{overflow:hidden;display:flex;justify-content:center;height:620px;margin-top:10px}
.flowmap{position:relative;width:1180px;height:620px;flex:0 0 auto;transform-origin:top center;color:var(--text)}
.flowmap::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(90deg,rgba(91,140,255,.05) 1px,transparent 1px),linear-gradient(0deg,rgba(176,107,255,.05) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(70% 70% at 50% 45%,#000,transparent 80%);mask-image:radial-gradient(70% 70% at 50% 45%,#000,transparent 80%)}

.flowmap .node{position:absolute;display:flex;align-items:center;justify-content:center;gap:7px;
  border:1.5px solid var(--line);border-radius:13px;background:linear-gradient(180deg,#12151f,#0e111a);
  color:var(--muted);font-size:15px;font-weight:600;box-shadow:0 6px 20px rgba(0,0,0,.35)}
.flowmap .req{width:130px;height:52px;animation:fm-float 5s ease-in-out infinite}
.flowmap .req .rdot{width:7px;height:7px;border-radius:50%;background:var(--muted-2);flex:0 0 auto}
.flowmap .asset{width:116px;height:66px;flex-direction:column;gap:2px;border-color:#33405e;color:var(--text)}
.flowmap .asset .x{font-size:12px;color:var(--muted-2);font-weight:600}
.flowmap .asset .nm{font-size:15px;font-weight:700}
.flowmap .asset .tick{position:absolute;top:8px;right:9px;width:14px;height:14px;border-radius:50%;background:var(--grad);
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M9 16.2l-3.5-3.5-1.4 1.4L9 19 20 8l-1.4-1.4z'/%3E%3C/svg%3E") center/12px no-repeat;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M9 16.2l-3.5-3.5-1.4 1.4L9 19 20 8l-1.4-1.4z'/%3E%3C/svg%3E") center/12px no-repeat}
.flowmap #r1{left:40px;top:96px;animation-delay:0s}
.flowmap #r2{left:188px;top:150px;animation-delay:.6s}
.flowmap #r3{left:40px;top:226px;animation-delay:1.1s}
.flowmap #r4{left:188px;top:288px;animation-delay:1.6s}
.flowmap #r5{left:40px;top:356px;animation-delay:2.1s}
.flowmap #a1{left:880px;top:150px}.flowmap #a2{left:1014px;top:150px}
.flowmap #a3{left:880px;top:252px}.flowmap #a4{left:1014px;top:252px}
.flowmap #a5{left:880px;top:354px}.flowmap #a6{left:1014px;top:354px}

.flowmap .lbl{position:absolute;font-size:13px;font-weight:800;letter-spacing:2px;text-transform:uppercase;color:var(--muted-2)}
.flowmap #lL{left:40px;top:452px}
.flowmap #lR{left:880px;top:452px;color:var(--muted)}
.flowmap #lC{left:0;right:0;top:512px;text-align:center;letter-spacing:1px}
.flowmap #lC b{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-size:20px;letter-spacing:0}
.flowmap #lC span{display:block;color:var(--muted-2);font-size:13px;font-weight:600;margin-top:6px;letter-spacing:2px;text-transform:none}

.flowmap .scene{position:absolute;left:455px;top:165px;width:270px;height:270px;perspective:1200px}
.flowmap .glow{position:absolute;inset:-40px;border-radius:50%;
  background:radial-gradient(circle,rgba(176,107,255,.16),rgba(91,140,255,.06) 45%,transparent 70%);animation:fm-pulse 5.5s ease-in-out infinite}
.flowmap .cube,.flowmap .cube *{transform-style:preserve-3d}
.flowmap .cube{position:absolute;left:60px;top:55px;width:150px;height:150px;animation:fm-spin 20s linear infinite}
.flowmap .face{position:absolute;width:150px;height:150px;border:2px solid rgba(255,255,255,.6);
  background:linear-gradient(135deg,rgba(91,140,255,.16),rgba(176,107,255,.12));
  background-image:repeating-linear-gradient(0deg,rgba(109,155,255,.18) 0 1.5px,transparent 1.5px 22px),repeating-linear-gradient(90deg,rgba(176,107,255,.18) 0 1.5px,transparent 1.5px 22px);
  box-shadow:inset 0 0 22px rgba(120,160,255,.08)}
.flowmap .f-fr{transform:translateZ(75px)}.flowmap .f-bk{transform:rotateY(180deg) translateZ(75px)}
.flowmap .f-rt{transform:rotateY(90deg) translateZ(75px)}.flowmap .f-lt{transform:rotateY(-90deg) translateZ(75px)}
.flowmap .f-tp{transform:rotateX(90deg) translateZ(75px)}.flowmap .f-bm{transform:rotateX(-90deg) translateZ(75px)}
/* 内核：反向自转——外笼旋转，织机始终正对观看者，焦点定在织布上 */
.flowmap .core{position:absolute;left:25px;top:25px;width:100px;height:100px;animation:fm-spin-rev 20s linear infinite}
.flowmap .cface{position:absolute;width:100px;height:100px;border:1px solid rgba(120,160,255,.34);background:rgba(91,140,255,.05);overflow:hidden}
/* 内核：自动织布机（经线竖、纬线梭子穿梭、织物自下生长） */
.flowmap .loom{position:absolute;inset:6px;overflow:hidden;background:rgba(10,16,34,.35)}
.flowmap .loom-warp{position:absolute;inset:0;background:repeating-linear-gradient(90deg,rgba(125,168,255,.85) 0 1.6px,transparent 1.6px 10px)}
.flowmap .loom-weave{position:absolute;left:0;right:0;bottom:0;height:8%;
  background:linear-gradient(115deg,transparent 28%,rgba(160,220,255,.22) 50%,transparent 72%),repeating-linear-gradient(0deg,rgba(184,124,255,.72) 0 1.5px,transparent 1.5px 7px);
  box-shadow:0 -1px 6px rgba(176,107,255,.45);animation:fm-weave 3.6s ease-in-out infinite}
.flowmap .loom-shuttle{position:absolute;left:0;width:34%;height:3px;bottom:8%;border-radius:3px;
  background:linear-gradient(90deg,transparent,#6df0d6 45%,#adfff0,transparent);box-shadow:0 0 10px rgba(86,224,200,.95),0 0 3px rgba(173,255,240,.9);
  animation:fm-shuttle 1s linear infinite alternate,fm-rise 3.6s ease-in-out infinite}
.flowmap .c-fr{transform:translateZ(50px)}.flowmap .c-bk{transform:rotateY(180deg) translateZ(50px)}
.flowmap .c-rt{transform:rotateY(90deg) translateZ(50px)}.flowmap .c-lt{transform:rotateY(-90deg) translateZ(50px)}
.flowmap .c-tp{transform:rotateX(90deg) translateZ(50px)}.flowmap .c-bm{transform:rotateX(-90deg) translateZ(50px)}

.flowmap .wires{position:absolute;inset:0;width:1180px;height:620px;pointer-events:none}
.flowmap .dep{stroke:var(--line);stroke-width:2;fill:none}
.flowmap .flow{stroke-width:2.4;fill:none;stroke-linecap:round;stroke-dasharray:2 11;animation:fm-dash 1.1s linear infinite}
.flowmap .flow.r{animation-duration:1.25s}

@keyframes fm-spin{from{transform:rotateX(-26deg) rotateY(0)}to{transform:rotateX(-26deg) rotateY(360deg)}}
@keyframes fm-spin-rev{from{transform:rotateY(0)}to{transform:rotateY(-360deg)}}
@keyframes fm-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}
@keyframes fm-pulse{0%,100%{opacity:.4;transform:scale(1)}50%{opacity:.62;transform:scale(1.03)}}
@keyframes fm-dash{to{stroke-dashoffset:-26}}
@keyframes fm-weave{0%{height:8%}86%{height:90%}100%{height:8%}}
@keyframes fm-rise{0%{bottom:8%}86%{bottom:90%}100%{bottom:8%}}
@keyframes fm-shuttle{0%{transform:translateX(0)}100%{transform:translateX(233%)}}

/* 等比缩放以适配窄屏（不溢出） */
@media (max-width:1220px){.flowmap{transform:scale(.92)}.flowmap-wrap{height:570px}}
@media (max-width:1040px){.flowmap{transform:scale(.78)}.flowmap-wrap{height:484px}}
@media (max-width:820px){.flowmap{transform:scale(.62)}.flowmap-wrap{height:384px}}
@media (max-width:600px){.flowmap{transform:scale(.46)}.flowmap-wrap{height:285px}}
@media (max-width:430px){.flowmap{transform:scale(.33)}.flowmap-wrap{height:205px}}
/* 离屏暂停：flowmap 滚出视口时停掉 6 组无限动画，省移动端 GPU/电量（由 app.js 切换 .paused） */
.flowmap.paused *{animation-play-state:paused!important}

/* 尊重「减少动态效果」偏好：停所有动画 + 关过渡，并把织机定格在「已织好」状态（满幅织物），而非空架子 */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none !important}
  .flowmap *{animation:none!important}
  .flowmap .loom-weave{height:90%}
  .flowmap .loom-shuttle{display:none}
}