/* ============================================================
   FunctionComplete — 电路图美学
   深色底 + 青色信号线 + 等宽字体 + 逻辑门视觉
   ============================================================ */

:root{
  --bg:        #070b12;
  --bg-alt:    #0a1019;
  --panel:     #0d1421;
  --panel-2:   #111a29;
  --line:      #1b2536;
  --line-2:    #243247;

  --ink:       #e6edf7;
  --ink-2:     #9fb0c8;
  --ink-3:     #6b7d97;

  --cy:        #22d3ee;   /* 信号：青 */
  --cy-dim:    #0e7490;
  --gr:        #34d399;   /* 信号：绿 */
  --am:        #fbbf24;   /* 信号：琥珀 */
  --vi:        #a78bfa;

  --mono: ui-monospace, "JetBrains Mono", "IBM Plex Mono", "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Noto Sans SC", Roboto, Helvetica, Arial, sans-serif;

  --maxw: 1140px;
  --r: 12px;
  --r-sm: 8px;
}

*,*::before,*::after{ box-sizing:border-box; }

html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto; } }

body{
  margin:0;
  overflow-x:hidden;   /* 兜底：避免任何子元素撑破视口 */
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.72;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

/* 全局网格底纹 —— 像 PCB 板 */
body::before{
  content:"";
  position:fixed; inset:0;
  background-image:
    linear-gradient(to right, rgba(27,37,54,.5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27,37,54,.5) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 0%, #000 0%, transparent 75%);
          mask-image:radial-gradient(ellipse 80% 60% at 50% 0%, #000 0%, transparent 75%);
  pointer-events:none; z-index:0;
}

.wrap{ width:100%; max-width:var(--maxw); margin:0 auto; padding:0 24px; position:relative; z-index:1; }
.sr-only{ position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; }

a{ color:var(--cy); text-decoration:none; }
a:hover{ text-decoration:underline; text-underline-offset:3px; }

h1,h2,h3,h4{ line-height:1.25; margin:0 0 .5em; letter-spacing:-.01em; }
h2{ font-size:clamp(1.6rem, 3.4vw, 2.4rem); font-weight:700; }
h3{ font-size:1.12rem; font-weight:650; }
p{ margin:0 0 1em; color:var(--ink-2); }
strong{ color:var(--ink); font-weight:650; }

/* ---------- 语言切换：默认只显示当前语言 ---------- */
html[data-lang="zh"] .i18n[data-lang="en"],
html[data-lang="en"] .i18n[data-lang="zh"]{ display:none; }

/* ---------- NAV ---------- */
.nav{
  position:sticky; top:0; z-index:50;
  background:rgba(7,11,18,.78);
  backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:var(--maxw); margin:0 auto; padding:12px 24px;
  display:flex; align-items:center; gap:28px;
}
.brand{ display:flex; align-items:center; gap:10px; color:var(--ink); font-weight:600; }
.brand:hover{ text-decoration:none; }
.brand-mark{ width:38px; height:27px; color:var(--cy); flex:none; }
.brand-text{ font-family:var(--mono); font-size:.95rem; letter-spacing:.02em; }
.brand-text b{ color:var(--cy); font-weight:700; }

.nav-links{ display:flex; gap:22px; margin-left:auto; }
.nav-links a{
  color:var(--ink-2); font-size:.88rem; font-weight:500;
  font-family:var(--mono); letter-spacing:.01em;
}
.nav-links a:hover{ color:var(--cy); text-decoration:none; }

.nav-actions{ display:flex; align-items:center; gap:12px; }
.lang-toggle{
  font-family:var(--mono); font-size:.8rem; letter-spacing:.06em;
  background:transparent; color:var(--ink-2);
  border:1px solid var(--line-2); border-radius:999px;
  padding:5px 12px; cursor:pointer; transition:.18s;
}
.lang-toggle:hover{ border-color:var(--cy); color:var(--cy); }
.lang-sep{ opacity:.35; margin:0 3px; }
html[data-lang="zh"] .lang-zh{ color:var(--cy); font-weight:700; }
html[data-lang="en"] .lang-en{ color:var(--cy); font-weight:700; }

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  font-family:var(--mono); font-size:.85rem; font-weight:600;
  padding:11px 22px; border-radius:var(--r-sm);
  border:1px solid transparent; cursor:pointer; transition:.18s; white-space:nowrap;
}
.btn:hover{ text-decoration:none; transform:translateY(-1px); }
.btn-primary{
  background:linear-gradient(135deg, var(--cy), #0891b2);
  color:#04141a; box-shadow:0 0 0 1px rgba(34,211,238,.35), 0 8px 26px -12px rgba(34,211,238,.7);
}
.btn-primary:hover{ box-shadow:0 0 0 1px rgba(34,211,238,.6), 0 12px 32px -12px rgba(34,211,238,.9); }
.btn-ghost{ border-color:var(--line-2); color:var(--ink); background:rgba(13,20,33,.6); }
.btn-ghost:hover{ border-color:var(--cy); color:var(--cy); }

/* ---------- HERO ---------- */
.hero{ position:relative; padding:96px 0 88px; overflow:hidden; }
.hero-bg{ position:absolute; inset:0; z-index:0; }
.circuit{ width:100%; height:100%; display:block; }
.trace path{
  fill:none; stroke:var(--cy-dim); stroke-width:1.2; opacity:.55;
  stroke-dasharray:5 7; animation:flow 9s linear infinite;
}
.trace path:nth-child(2n){ animation-duration:13s; stroke:var(--gr); opacity:.32; }
.trace path:nth-child(3n){ animation-duration:16s; opacity:.24; }
@keyframes flow{ to{ stroke-dashoffset:-120; } }
.nodes circle{ fill:var(--cy); opacity:.5; }
.hero-inner{ position:relative; z-index:1; }

.badge{
  display:inline-flex; align-items:center; gap:9px;
  font-family:var(--mono); font-size:.76rem; letter-spacing:.08em; text-transform:uppercase;
  color:var(--cy); background:rgba(34,211,238,.07);
  border:1px solid rgba(34,211,238,.28); border-radius:999px;
  padding:6px 15px; margin-bottom:26px;
}
.pulse{
  width:7px; height:7px; border-radius:50%; background:var(--gr); flex:none;
  box-shadow:0 0 0 0 rgba(52,211,153,.7); animation:pulse 2.2s infinite;
}
@keyframes pulse{
  0%{ box-shadow:0 0 0 0 rgba(52,211,153,.7); }
  70%{ box-shadow:0 0 0 9px rgba(52,211,153,0); }
  100%{ box-shadow:0 0 0 0 rgba(52,211,153,0); }
}

.hero h1{
  font-size:clamp(2.1rem, 5.6vw, 4rem);
  font-weight:750; line-height:1.14; letter-spacing:-.025em;
  max-width:19ch; margin-bottom:24px;
}
/* 英文标题更长：略缩字号、放宽宽度，避免拆成 5 行 */
html[data-lang="en"] .hero h1{
  font-size:clamp(1.9rem, 4.4vw, 3.3rem);
  max-width:26ch; letter-spacing:-.03em;
}
.hero h1 em{
  font-style:normal; display:inline-block;
  background:linear-gradient(100deg, var(--cy) 10%, var(--gr) 90%);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.lead{ font-size:clamp(1rem, 1.6vw, 1.14rem); max-width:62ch; color:var(--ink-2); }

.hero-cta{ display:flex; gap:14px; flex-wrap:wrap; margin:34px 0 46px; }

.hero-stats{
  list-style:none; margin:0; padding:22px 0 0;
  display:flex; gap:44px; flex-wrap:wrap;
  border-top:1px solid var(--line);
}
.hero-stats li{ display:flex; flex-direction:column; gap:3px; }
.hero-stats b{
  font-family:var(--mono); font-size:1.5rem; font-weight:700;
  color:var(--ink); letter-spacing:-.01em;
}
.hero-stats .unit{ font-size:.9rem; color:var(--ink-3); margin-left:2px; }
.hero-stats span{ font-family:var(--mono); font-size:.74rem; letter-spacing:.09em;
  text-transform:uppercase; color:var(--ink-3); }

/* ---------- SECTION ---------- */
.section{ padding:88px 0; position:relative; z-index:1; }
.section-alt{ background:var(--bg-alt); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.eyebrow{
  font-family:var(--mono); font-size:.76rem; letter-spacing:.16em; text-transform:uppercase;
  color:var(--cy); margin:0 0 12px;
}
.section-lead{ font-size:1.03rem; max-width:70ch; margin-bottom:44px; }

/* ---------- GRID / CARD ---------- */
.grid{ display:grid; gap:20px; }
.grid-2{ grid-template-columns:repeat(auto-fit, minmax(320px, 1fr)); }
.grid-3{ grid-template-columns:repeat(auto-fit, minmax(260px, 1fr)); }

.card{
  background:linear-gradient(180deg, var(--panel), var(--bg-alt));
  border:1px solid var(--line); border-radius:var(--r);
  padding:26px 24px; position:relative; overflow:hidden;
  transition:border-color .2s, transform .2s;
}
.card::before{
  content:""; position:absolute; top:0; left:0; right:0; height:1px;
  background:linear-gradient(90deg, transparent, rgba(34,211,238,.5), transparent);
  opacity:0; transition:opacity .25s;
}
.card:hover{ border-color:var(--line-2); transform:translateY(-3px); }
.card:hover::before{ opacity:1; }
.card h3{ margin-bottom:8px; }
.card p{ font-size:.93rem; margin:0; }
.card-ico{ width:34px; height:34px; color:var(--cy); margin-bottom:14px; }
.card-ico svg{ width:100%; height:100%; }
.card-sm{ padding:22px 20px; }
.card-sm .num{
  font-family:var(--mono); font-size:.78rem; font-weight:700; color:var(--cy);
  display:block; margin-bottom:10px; letter-spacing:.08em;
}
.card-flywheel{ border-color:rgba(52,211,153,.3); }
.card-flywheel .num{ color:var(--gr); }
.flywheel{ margin:10px 0 0; padding-left:18px; font-size:.9rem; color:var(--ink-2); }
.flywheel li{ margin-bottom:4px; }

/* ---------- INSIGHT ---------- */
.section-insight{ padding:76px 0; }
.insight-wrap{ display:grid; grid-template-columns:1.15fr .85fr; gap:52px; align-items:center; }
.insight-copy p{ font-size:1rem; }
.insight-diagram svg{ width:100%; height:auto; }
.d-box{ fill:rgba(34,211,238,.06); stroke:var(--cy); stroke-width:1.3; }
.d-box2{ fill:rgba(251,191,36,.05); stroke:var(--am); stroke-width:1.3; }
.d-label{ fill:var(--ink); font:700 11px var(--mono); letter-spacing:.1em; }
.d-sub{ fill:var(--ink-3); font:10px var(--mono); }
.d-note{ fill:var(--ink-3); font:9px var(--mono); }
.d-arrow{ fill:none; stroke:var(--gr); stroke-width:1.4; marker-end:url(#a); }
.d-arrow.dashed{ stroke:var(--am); stroke-dasharray:4 4; }

/* ---------- GATES ---------- */
.gates{ display:grid; grid-template-columns:repeat(auto-fit, minmax(280px,1fr)); gap:22px; margin-bottom:40px; }
.gate{
  margin:0; padding:22px; border:1px solid var(--line); border-radius:var(--r);
  background:linear-gradient(180deg, var(--panel), var(--bg-alt));
}
.gate svg{ width:100%; max-width:230px; height:auto; display:block; margin:0 auto 14px; }
.gate figcaption{ display:flex; flex-direction:column; gap:5px; }
.gate figcaption b{ font-size:.98rem; }
.gate figcaption span{ font-size:.88rem; color:var(--ink-3); }
.g-wire{ fill:none; stroke:var(--cy-dim); stroke-width:1.6; }
.g-wire.dashed{ stroke:var(--am); stroke-dasharray:3 3; }
.g-body{ fill:rgba(34,211,238,.07); stroke:var(--cy); stroke-width:1.6; }
.g-body2{ fill:rgba(52,211,153,.06); stroke:var(--gr); stroke-width:1.6; }
.g-bubble{ fill:var(--bg); stroke:var(--cy); stroke-width:1.6; }
.g-text{ fill:var(--ink); font:600 13px var(--mono); letter-spacing:.06em; }
.g-sub{ fill:var(--ink-3); font:9px var(--mono); }
.g-pin{ fill:var(--ink-3); font:9px var(--mono); }

/* ---------- TABLE ---------- */
.table-wrap{ overflow-x:auto; border:1px solid var(--line); border-radius:var(--r); }
.data-table{ width:100%; border-collapse:collapse; font-size:.9rem; min-width:520px; }
.data-table th, .data-table td{
  padding:13px 18px; text-align:left; border-bottom:1px solid var(--line);
  vertical-align:top;
}
.data-table thead th{
  font-family:var(--mono); font-size:.74rem; letter-spacing:.1em; text-transform:uppercase;
  color:var(--ink-3); background:var(--panel); font-weight:600; white-space:nowrap;
}
.data-table tbody tr:last-child td{ border-bottom:none; }
.data-table tbody td:first-child{ color:var(--ink); font-weight:600; white-space:nowrap; }
.data-table-cmp tbody td{ color:var(--ink-2); }
.data-table-cmp .col-hl{
  color:var(--cy); font-weight:600;
  background:rgba(34,211,238,.045);
}
.data-table-cmp thead .col-hl{ color:var(--cy); }

/* ---------- LAYERS ---------- */
.layers{ display:flex; flex-direction:column; gap:0; }
.layer{
  display:flex; gap:22px; align-items:flex-start;
  background:linear-gradient(90deg, var(--panel), var(--bg-alt));
  border:1px solid var(--line); border-radius:var(--r); padding:26px 26px;
}
.layer-key{ border-color:rgba(34,211,238,.35); background:linear-gradient(90deg, rgba(34,211,238,.05), var(--bg-alt)); }
.layer-no{
  font-family:var(--mono); font-size:.8rem; font-weight:700; letter-spacing:.06em;
  color:var(--cy); border:1px solid var(--line-2); border-radius:var(--r-sm);
  padding:5px 11px; flex:none;
}
.layer-body h3{ margin-bottom:6px; }
.layer-body p{ font-size:.92rem; margin-bottom:12px; }
.tags{ list-style:none; display:flex; gap:8px; flex-wrap:wrap; margin:0; padding:0; }
.tags li{
  font-family:var(--mono); font-size:.74rem; color:var(--ink-3);
  border:1px solid var(--line); border-radius:999px; padding:3px 11px;
}
.layer-arrow{
  display:flex; align-items:center; justify-content:center;
  padding:11px 0; position:relative;
}
.layer-arrow::before{
  content:""; position:absolute; left:50%; top:0; bottom:0; width:1px;
  background:linear-gradient(180deg, var(--line-2), var(--cy-dim), var(--line-2));
}
.layer-arrow span{
  position:relative; font-family:var(--mono); font-size:.72rem; letter-spacing:.06em;
  color:var(--ink-3); background:var(--bg-alt); padding:3px 13px; border-radius:999px;
  border:1px solid var(--line);
}
.section-alt .layer-arrow span{ background:var(--bg); }

/* ---------- CHECK LIST ---------- */
.check-list{ display:flex; flex-direction:column; gap:20px; }
.check{ display:flex; gap:14px; align-items:flex-start; }
.ck{
  flex:none; width:23px; height:23px; border-radius:50%;
  display:grid; place-items:center; font-size:.72rem; font-weight:700;
  color:var(--gr); background:rgba(52,211,153,.1); border:1px solid rgba(52,211,153,.4);
  margin-top:2px;
}
.check b{ display:block; margin-bottom:2px; font-size:.98rem; }
.check p{ margin:0; font-size:.9rem; }

/* ---------- PATHS ---------- */
.paths{
  background:linear-gradient(180deg, var(--panel), var(--bg-alt));
  border:1px solid var(--line); border-radius:var(--r); padding:26px 24px;
}
.paths h3{ font-size:1rem; margin-bottom:18px; }
.path{ display:flex; gap:13px; align-items:flex-start; padding:12px 0; border-bottom:1px dashed var(--line); }
.path:last-of-type{ border-bottom:none; }
.path b{ display:block; font-size:.95rem; margin-bottom:2px; }
.path span{ font-size:.86rem; color:var(--ink-3); }
.dot{ width:9px; height:9px; border-radius:50%; flex:none; margin-top:8px; }
.dot-tee{ background:var(--cy); box-shadow:0 0 10px var(--cy); }
.dot-zk{ background:var(--vi); box-shadow:0 0 10px var(--vi); }
.dot-op{ background:var(--am); box-shadow:0 0 10px var(--am); }
.paths-note{ margin:16px 0 0; font-size:.85rem; color:var(--ink-3); }

/* ---------- ECONOMICS ---------- */
.eco-grid{ display:grid; grid-template-columns:1fr 1fr; gap:48px; }
.eco-sub{ font-size:.95rem; font-family:var(--mono); letter-spacing:.06em;
  color:var(--ink-3); text-transform:uppercase; margin-bottom:20px; }
.alloc{ list-style:none; margin:0 0 18px; padding:0; display:flex; flex-direction:column; gap:13px; }
.alloc li{ display:grid; grid-template-columns:1fr auto; gap:6px 14px; align-items:center; position:relative; }
.alloc .bar{
  grid-column:1/-1; height:5px; border-radius:3px;
  background:linear-gradient(90deg, var(--cy), var(--cy-dim));
  width:var(--w); opacity:.75;
}
.alloc b{ font-size:.92rem; font-weight:600; }
.alloc em{ font-family:var(--mono); font-style:normal; color:var(--cy); font-weight:700; font-size:.92rem; }
.alloc small{ grid-column:1/-1; font-size:.76rem; color:var(--ink-3); }
.eco-total{ font-size:.9rem; color:var(--ink-3); border-top:1px solid var(--line); padding-top:14px; }
.eco-total b{ font-family:var(--mono); color:var(--ink); }
.mech article{ padding:16px 0; border-bottom:1px dashed var(--line); }
.mech article:last-child{ border-bottom:none; }
.mech h4{ font-size:.96rem; margin-bottom:5px; color:var(--cy); }
.mech p{ font-size:.89rem; margin:0; }

/* ---------- TIMELINE ---------- */
.timeline{ list-style:none; margin:0; padding:0; position:relative; }
.timeline::before{
  content:""; position:absolute; left:7px; top:8px; bottom:8px; width:1px;
  background:linear-gradient(180deg, var(--cy), var(--cy-dim), var(--line));
}
.timeline li{ position:relative; padding:0 0 34px 38px; }
.timeline li:last-child{ padding-bottom:0; }
.tl-dot{
  position:absolute; left:0; top:7px; width:15px; height:15px; border-radius:50%;
  background:var(--bg); border:2px solid var(--cy); box-shadow:0 0 12px rgba(34,211,238,.5);
}
.tl-body header{ display:flex; align-items:baseline; gap:12px; margin-bottom:8px; flex-wrap:wrap; }
.tl-body header b{ font-family:var(--mono); color:var(--cy); font-size:1rem; }
.tl-body header span{ font-weight:600; color:var(--ink); }
.tl-body ul{ margin:0; padding-left:18px; }
.tl-body li{ padding:0 0 3px; font-size:.9rem; color:var(--ink-2); }

/* ---------- CTA ---------- */
.cta{
  padding:96px 0; text-align:center;
  background:
    radial-gradient(ellipse 60% 100% at 50% 0%, rgba(34,211,238,.09), transparent 70%),
    var(--bg-alt);
  border-top:1px solid var(--line);
}
.cta h2{ max-width:22ch; margin:0 auto 16px; }
.cta p{ max-width:64ch; margin:0 auto 30px; }
.cta .hero-cta{ justify-content:center; margin-bottom:0; }

/* ---------- FOOTER ---------- */
.footer{ border-top:1px solid var(--line); padding:38px 0; background:var(--bg); }
.footer-inner{ display:flex; align-items:center; gap:22px; flex-wrap:wrap; }
.footer-brand{ display:flex; align-items:center; gap:9px; font-family:var(--mono); font-size:.9rem; }
.footer-brand b{ color:var(--cy); }
.footer-note{ margin:0; font-size:.82rem; color:var(--ink-3); }
.footer-links{ margin-left:auto; display:flex; gap:18px; }
.footer-links a{ font-family:var(--mono); font-size:.8rem; color:var(--ink-3); }
.footer-links a:hover{ color:var(--cy); }

/* ---------- REVEAL ---------- */
.reveal{ opacity:0; transform:translateY(16px); transition:opacity .6s ease, transform .6s ease; }
.reveal.in{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){
  .reveal{ opacity:1; transform:none; transition:none; }
  .trace path, .pulse{ animation:none; }
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px){
  .insight-wrap{ grid-template-columns:1fr; gap:34px; }
  .eco-grid{ grid-template-columns:1fr; gap:34px; }
  .nav-links{ display:none; }
  .nav-inner{ gap:16px; }
  .nav-actions{ margin-left:auto; }
}
/* 窄屏导航：收紧间距与控件尺寸，消除横向溢出 */
@media (max-width: 520px){
  .nav-inner{ padding:10px 14px; gap:10px; }
  .brand-mark{ width:30px; height:22px; }
  .brand-text{ font-size:.82rem; }
  .nav-actions{ gap:8px; }
  .nav-actions .btn{ padding:8px 12px; font-size:.76rem; }
  .lang-toggle{ padding:4px 9px; font-size:.74rem; }
  .wrap{ padding:0 16px; }
}
@media (max-width: 620px){
  .section{ padding:64px 0; }
  .hero{ padding:64px 0 60px; }
  .hero-stats{ gap:26px; }
  .layer{ flex-direction:column; gap:14px; }
  .footer-inner{ flex-direction:column; align-items:flex-start; gap:14px; }
  .footer-links{ margin-left:0; }
}

/* ============================================================
   多链部署相关组件
   ============================================================ */

/* 架构区：多链拓扑 */
.topology{
  margin-top:34px; padding:26px 24px;
  border:1px solid var(--line); border-radius:var(--r);
  background:linear-gradient(180deg, var(--panel), var(--bg-alt));
}
.topo-h{
  font-family:var(--mono); font-size:.76rem; letter-spacing:.14em;
  text-transform:uppercase; color:var(--ink-3); margin-bottom:18px;
}
.topo{ list-style:none; margin:0; padding:0; display:grid; gap:2px; }
.topo li{
  display:grid; grid-template-columns:190px 1fr; gap:18px; align-items:baseline;
  padding:12px 0; border-bottom:1px dashed var(--line);
}
.topo li:last-child{ border-bottom:none; }
.topo b{
  font-family:var(--mono); font-size:.88rem; color:var(--cy); font-weight:650;
}
.topo span{ font-size:.9rem; color:var(--ink-2); }

/* 多链章节：链路卡片 */
.chain-grid{
  display:grid; grid-template-columns:repeat(auto-fit, minmax(280px, 1fr));
  gap:20px; margin-bottom:30px;
}
.chain{
  background:linear-gradient(180deg, var(--panel), var(--bg-alt));
  border:1px solid var(--line); border-radius:var(--r);
  padding:24px 22px; position:relative; overflow:hidden;
  transition:border-color .2s, transform .2s;
}
.chain::before{
  content:""; position:absolute; left:0; top:0; bottom:0; width:2px;
  background:linear-gradient(180deg, var(--cy), transparent);
  opacity:.55;
}
.chain:hover{ border-color:var(--line-2); transform:translateY(-3px); }
.chain header{ display:flex; align-items:center; gap:11px; margin-bottom:6px; }
.chain-no{
  font-family:var(--mono); font-size:.72rem; font-weight:700; letter-spacing:.06em;
  color:var(--cy); border:1px solid var(--line-2); border-radius:6px;
  padding:3px 8px; flex:none;
}
.chain h3{ margin:0; font-size:1.05rem; }
.chain-role{
  font-family:var(--mono); font-size:.78rem; color:var(--ink-3);
  margin:0 0 14px; letter-spacing:.01em;
}
.chain ul{ margin:0; padding-left:16px; }
.chain li{ font-size:.88rem; color:var(--ink-2); margin-bottom:7px; }
.chain-rome::before{ background:linear-gradient(180deg, var(--vi), transparent); }
.chain-rome .chain-no{ color:var(--vi); }

/* 风险控制说明 */
.risk-note{
  border:1px solid rgba(251,191,36,.28); border-radius:var(--r);
  background:rgba(251,191,36,.045); padding:22px 24px;
}
.risk-note h3{
  font-family:var(--mono); font-size:.8rem; letter-spacing:.1em; text-transform:uppercase;
  color:var(--am); margin-bottom:14px;
}
.risk-note ul{ margin:0; padding-left:18px; }
.risk-note li{ font-size:.9rem; color:var(--ink-2); margin-bottom:6px; }

/* 表格上方小标题 */
.sub-h{
  font-size:1.02rem; margin:40px 0 18px; color:var(--ink);
}

/* 时间轴里的战略价值 */
.tl-value{
  margin:12px 0 0; padding:10px 14px; font-size:.85rem; color:var(--cy);
  background:rgba(34,211,238,.05); border-left:2px solid var(--cy);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
}

@media (max-width: 620px){
  .topo li{ grid-template-columns:1fr; gap:3px; }
}