/* ============================================================
   Power AI — 光明未来派设计系统
   基底：白色实验室质感 · 能量以光的形态出现
   ============================================================ */

:root {
  /* 色板 */
  --bg: #FAFBFD;
  --bg-pure: #FFFFFF;
  --ink: #0B2B45;
  --ink-soft: #3D5A73;
  --ink-faint: #7A93A8;
  --energy: #00C2D1;
  --energy-deep: #0891B2;
  --energy-glow: rgba(0, 194, 209, 0.14);
  --save: #0FB981;
  --cost: #F59E0B;
  --line: rgba(11, 43, 69, 0.08);
  --line-strong: rgba(11, 43, 69, 0.16);

  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, 'PingFang SC',
    'Hiragino Sans GB', 'Microsoft YaHei', 'Segoe UI', sans-serif;
  --font-mono: 'SF Mono', 'JetBrains Mono', Menlo, Consolas,
    'Courier New', monospace;

  /* 尺度 */
  --nav-h: 72px;
  --max-w: 1200px;
  --radius: 16px;
  --radius-sm: 10px;

  /* 动效 */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --shadow-card: 0 1px 2px rgba(11, 43, 69, 0.04),
    0 8px 32px rgba(11, 43, 69, 0.06);
  --shadow-lift: 0 2px 4px rgba(11, 43, 69, 0.05),
    0 20px 60px rgba(0, 194, 209, 0.12);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--energy); color: #fff; }

/* ---------- 精密网格背景 ---------- */
.grid-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 20%, transparent 75%);
  opacity: 0.55;
}

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(20px, 4vw, 48px);
  transition: background 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out),
    backdrop-filter 0.4s;
}
.nav.scrolled {
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  box-shadow: 0 1px 0 var(--line-strong);
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--ink);
}
.nav-logo {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--ink) 0%, var(--energy-deep) 100%);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}
.nav-logo svg {
  display: block;
  width: 21px; height: 21px;
}
.nav-name { font-size: 17px; font-weight: 700; letter-spacing: 0.02em; }
.nav-name em {
  font-style: normal;
  color: var(--energy-deep);
}
.nav-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-faint);
  letter-spacing: 0.14em;
  display: block;
  line-height: 1.2;
  margin-top: 1px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.6vw, 36px);
  list-style: none;
}
.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 500;
  position: relative;
  padding: 6px 0;
  transition: color 0.25s;
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 2px;
  background: var(--energy);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease-out);
}
.nav-links a:hover, .nav-links a.active { color: var(--ink); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }
.nav-cta {
  font-size: 13.5px !important;
  font-weight: 600 !important;
  color: var(--energy-deep) !important;
  border: 1px solid rgba(8, 145, 178, 0.35);
  border-radius: 999px;
  padding: 7px 18px !important;
  transition: all 0.3s var(--ease-out) !important;
}
.nav-cta::after { display: none; }
.nav-cta:hover {
  background: var(--energy);
  border-color: var(--energy);
  color: #fff !important;
  box-shadow: 0 6px 24px rgba(0, 194, 209, 0.35);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-h) + 40px) 24px 120px;
  z-index: 1;
}
#energy-core {
  position: absolute;
  inset: 0;
  z-index: -1;
}
/* WebGL 不可用时的降级能量辉光 */
#energy-core.core-fallback {
  background:
    radial-gradient(circle at 50% 46%, rgba(0, 194, 209, 0.22) 0%, transparent 34%),
    radial-gradient(circle at 50% 46%, rgba(8, 145, 178, 0.12) 22%, transparent 52%),
    repeating-conic-gradient(from 0deg at 50% 46%, rgba(8, 145, 178, 0.05) 0deg 6deg, transparent 6deg 24deg);
  animation: fallbackBreathe 8s ease-in-out infinite;
}
@keyframes fallbackBreathe {
  0%, 100% { opacity: 0.75; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.04); }
}
.hero-glow {
  position: absolute;
  top: 50%; left: 50%;
  width: min(72vw, 860px);
  aspect-ratio: 1;
  transform: translate(-50%, -52%);
  background: radial-gradient(circle, var(--energy-glow) 0%, transparent 62%);
  z-index: -2;
  pointer-events: none;
}
/* 文字可读性纱幕：淡化核心中部粒子，保留边缘可见 */
.hero-veil {
  position: absolute;
  top: 50%; left: 50%;
  width: min(64vw, 760px);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(250, 251, 253, 0.72) 0%, rgba(250, 251, 253, 0.35) 46%, transparent 68%);
  z-index: -1;
  pointer-events: none;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--energy-deep);
  border: 1px solid rgba(8, 145, 178, 0.28);
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(8px);
  padding: 8px 18px;
  border-radius: 999px;
  margin-bottom: 34px;
}
.hero-eyebrow .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--energy);
  box-shadow: 0 0 10px var(--energy);
  animation: blink 2.2s ease-in-out infinite;
}
@keyframes blink { 0%,100% {opacity:1;} 50% {opacity:0.25;} }

.hero h1 {
  font-size: clamp(40px, 7.2vw, 88px);
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.18;
  color: var(--ink);
  margin-bottom: 26px;
}
.hero h1 .energy-word {
  background: linear-gradient(100deg, var(--energy-deep) 10%, var(--energy) 45%, #39E6F5 70%, var(--energy-deep) 95%);
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: flowText 5s linear infinite;
}
@keyframes flowText {
  0% { background-position: 0% 0; }
  100% { background-position: 220% 0; }
}
.hero-sub {
  font-size: clamp(16px, 1.8vw, 20px);
  color: var(--ink-soft);
  max-width: 640px;
  margin: 0 auto 14px;
}
.hero-sub strong { color: var(--ink); font-weight: 700; }
.hero-def {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--ink-faint);
  margin-bottom: 44px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 34px;
  border-radius: 999px;
  font-size: 15.5px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.35s var(--ease-out);
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--ink);
  color: #fff;
  box-shadow: 0 10px 32px rgba(11, 43, 69, 0.28);
}
.btn-primary:hover {
  background: var(--energy-deep);
  transform: translateY(-2px);
  box-shadow: 0 16px 44px rgba(0, 194, 209, 0.4);
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.7);
  color: var(--ink);
  border: 1px solid var(--line-strong);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  border-color: var(--energy);
  color: var(--energy-deep);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}
.btn .arrow { transition: transform 0.3s var(--ease-out); }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- Hero 数据流 Ticker ---------- */
.ticker-wrap {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(14px);
  overflow: hidden;
  z-index: 2;
}
.ticker-label {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 18px;
  background: var(--bg-pure);
  border-right: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--energy-deep);
  white-space: nowrap;
}
.ticker-label .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--save);
  box-shadow: 0 0 8px var(--save);
  animation: blink 1.6s infinite;
}
.ticker {
  display: flex;
  gap: 0;
  width: max-content;
  animation: tickerScroll 46s linear infinite;
  padding: 11px 0;
  padding-left: 220px;
}
.ticker-wrap:hover .ticker { animation-play-state: paused; }
@keyframes tickerScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.ticker-item {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-soft);
  padding: 0 26px;
  border-right: 1px dashed var(--line-strong);
  white-space: nowrap;
}
.ticker-item .sid { color: var(--ink-faint); font-size: 11px; }
.ticker-item .val { color: var(--ink); font-weight: 600; }
.ticker-item .cop { color: var(--energy-deep); font-weight: 700; }
.ticker-item .up { color: var(--save); }
.ticker-item .down { color: var(--cost); }

/* ---------- 通用 Section ---------- */
.section {
  position: relative;
  z-index: 1;
  padding: clamp(80px, 11vw, 140px) clamp(20px, 5vw, 48px);
}
.container { max-width: var(--max-w); margin: 0 auto; }
.sec-head { max-width: 720px; margin-bottom: clamp(44px, 6vw, 72px); }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--energy-deep);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.sec-head.center .sec-index { justify-content: center; }
.sec-index::before {
  content: '';
  width: 34px; height: 1px;
  background: var(--energy);
}
.sec-head.center .sec-index::after {
  content: '';
  width: 34px; height: 1px;
  background: var(--energy);
}
.sec-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: 0.01em;
}
.sec-desc {
  margin-top: 16px;
  font-size: 16.5px;
  color: var(--ink-soft);
}

/* 滚动显现 */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}
.reveal.in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: 0.12s; }
.reveal-d2 { transition-delay: 0.24s; }
.reveal-d3 { transition-delay: 0.36s; }

/* ---------- 数字锚点 ---------- */
.metrics { background: var(--bg-pure); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.metric {
  background: var(--bg-pure);
  padding: clamp(28px, 3.4vw, 48px) clamp(20px, 2.6vw, 36px);
  position: relative;
  transition: background 0.4s;
}
.metric:hover { background: #F4FBFC; }
.metric::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--energy), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease-out);
}
.metric:hover::before { transform: scaleX(1); }
.metric-num {
  font-family: var(--font-mono);
  font-size: clamp(40px, 4.6vw, 62px);
  font-weight: 700;
  line-height: 1.05;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.metric-num .unit {
  font-size: 0.38em;
  font-weight: 600;
  color: var(--energy-deep);
  margin-left: 4px;
  letter-spacing: 0;
}
.metric-label { margin-top: 12px; font-size: 15px; font-weight: 600; color: var(--ink); }
.metric-note { margin-top: 5px; font-size: 13px; color: var(--ink-faint); line-height: 1.55; }
.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  padding: 3px 10px;
  border-radius: 999px;
  margin-top: 12px;
}
.tag::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: currentColor; }
.tag-real { color: var(--save); background: rgba(15, 185, 129, 0.09); border: 1px solid rgba(15, 185, 129, 0.28); }
.tag-sim { color: var(--energy-deep); background: var(--energy-glow); border: 1px solid rgba(8, 145, 178, 0.25); }
.tag-demo { color: var(--cost); background: rgba(245, 158, 11, 0.09); border: 1px solid rgba(245, 158, 11, 0.3); }

/* ---------- 基座关系图 ---------- */
.foundation-stack { display: flex; flex-direction: column; gap: 14px; position: relative; }
.layer {
  border-radius: var(--radius);
  padding: clamp(20px, 2.6vw, 30px) clamp(22px, 3vw, 36px);
  position: relative;
  transition: transform 0.45s var(--ease-out), box-shadow 0.45s var(--ease-out);
}
.layer:hover { transform: translateY(-3px); box-shadow: var(--shadow-lift); }
.layer-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.layer-name { font-size: 17px; font-weight: 700; display: flex; align-items: center; gap: 10px; }
.layer-name .lidx {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
}
.layer-role {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
}
.layer-items { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink-soft);
  background: var(--bg-pure);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 7px 16px;
  transition: all 0.3s var(--ease-out);
}
.layer:hover .chip { border-color: rgba(8, 145, 178, 0.4); color: var(--ink); }

.layer-app { background: rgba(255,255,255,0.85); border: 1px solid var(--line-strong); }
.layer-engine { background: rgba(240, 250, 251, 0.9); border: 1px solid rgba(8,145,178,0.22); }
.layer-device { background: rgba(247, 249, 251, 0.9); border: 1px solid var(--line-strong); }

.layer-base {
  background: linear-gradient(135deg, #0B2B45 0%, #103B5E 55%, #0A4A5E 100%);
  color: #fff;
  overflow: hidden;
}
.layer-base::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 20%, rgba(0,194,209,0.28), transparent 42%),
    radial-gradient(circle at 85% 80%, rgba(57,230,245,0.16), transparent 46%);
  pointer-events: none;
}
.layer-base .layer-name { font-size: clamp(20px, 2.4vw, 26px); }
.layer-base .layer-name .lidx { color: rgba(255,255,255,0.5); }
.layer-base .layer-role { color: rgba(255,255,255,0.62); }
.layer-base .layer-desc {
  position: relative;
  font-size: 14.5px;
  color: rgba(255, 255, 255, 0.82);
  max-width: 640px;
  margin-top: 4px;
}
.base-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: #7FE9F2;
  border: 1px solid rgba(127, 233, 242, 0.4);
  border-radius: 999px;
  padding: 4px 12px;
  margin-bottom: 12px;
}
.stack-flow {
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 2px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, transparent, var(--energy) 30%, var(--energy) 70%, transparent);
  opacity: 0.25;
  pointer-events: none;
  display: none;
}
.foundation-note {
  margin-top: 26px;
  text-align: center;
  font-size: 15px;
  color: var(--ink-faint);
}
.foundation-note strong { color: var(--energy-deep); font-weight: 700; }

/* ---------- 三次进化 ---------- */
.evolution { background: var(--bg-pure); border-top: 1px solid var(--line); }
.evo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(18px, 2.4vw, 28px);
}
.evo-card {
  position: relative;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--bg-pure);
  padding: clamp(26px, 3vw, 38px);
  overflow: hidden;
  transition: transform 0.45s var(--ease-out), box-shadow 0.45s var(--ease-out),
    border-color 0.45s;
  display: flex;
  flex-direction: column;
}
.evo-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lift);
  border-color: rgba(8, 145, 178, 0.45);
}
.evo-card::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 180px; height: 180px;
  background: radial-gradient(circle at top right, var(--energy-glow), transparent 70%);
  opacity: 0;
  transition: opacity 0.5s;
}
.evo-card:hover::after { opacity: 1; }
.evo-ver {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--energy-deep);
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.evo-ver .date { color: var(--ink-faint); letter-spacing: 0.08em; }
.evo-glyph {
  height: 120px;
  border-radius: var(--radius-sm);
  background: #F2FAFB;
  border: 1px solid rgba(8,145,178,0.14);
  margin-bottom: 22px;
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
}
.evo-glyph svg { display: block; }
.evo-verb { font-size: 21px; font-weight: 800; margin-bottom: 4px; }
.evo-verb small {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--ink-faint);
  margin-top: 6px;
}
.evo-text { font-size: 14.5px; color: var(--ink-soft); margin: 12px 0 18px; flex: 1; }
.evo-stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
  border-top: 1px dashed var(--line-strong);
  padding-top: 16px;
}
.evo-stat .n {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--energy-deep);
}
.evo-stat .t { font-size: 13px; color: var(--ink-faint); }

/* ---------- 信任三原则 ---------- */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(18px, 2.4vw, 28px);
}
.trust-card {
  border-radius: var(--radius);
  padding: clamp(26px, 3vw, 38px);
  background: var(--bg-pure);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-card);
  position: relative;
  transition: transform 0.45s var(--ease-out), box-shadow 0.45s var(--ease-out);
}
.trust-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lift); }
.trust-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin-bottom: 22px;
  background: linear-gradient(135deg, rgba(0,194,209,0.12), rgba(8,145,178,0.06));
  border: 1px solid rgba(8,145,178,0.2);
}
.trust-icon svg { stroke: var(--energy-deep); }
.trust-name { font-size: 20px; font-weight: 800; margin-bottom: 10px; }
.trust-name .en {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
  display: block;
  margin-top: 4px;
}
.trust-text { font-size: 14.5px; color: var(--ink-soft); margin-bottom: 18px; }
.trust-std {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--energy-deep);
  border-top: 1px dashed var(--line-strong);
  padding-top: 14px;
  letter-spacing: 0.04em;
  line-height: 1.8;
}

/* ---------- 演示入口 ---------- */
.demos { background: var(--bg-pure); border-top: 1px solid var(--line); }
.demo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(18px, 2.4vw, 28px);
}
.demo-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  background: linear-gradient(180deg, #FFFFFF 0%, #F5FBFC 100%);
  padding: clamp(26px, 3vw, 36px);
  text-decoration: none;
  color: var(--ink);
  overflow: hidden;
  transition: transform 0.45s var(--ease-out), box-shadow 0.45s var(--ease-out),
    border-color 0.45s;
}
.demo-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lift);
  border-color: var(--energy);
}
.demo-card::before {
  content: '';
  position: absolute;
  top: -40%; left: -20%;
  width: 60%; height: 180%;
  background: linear-gradient(100deg, transparent, rgba(0,194,209,0.09), transparent);
  transform: translateX(-120%) rotate(8deg);
  transition: transform 0.9s var(--ease-out);
}
.demo-card:hover::before { transform: translateX(320%) rotate(8deg); }
.demo-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 22px;
}
.demo-ver {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--energy-deep);
  background: var(--energy-glow);
  border: 1px solid rgba(8,145,178,0.25);
  padding: 4px 12px;
  border-radius: 999px;
}
.demo-ext { color: var(--ink-faint); transition: color 0.3s, transform 0.3s var(--ease-out); }
.demo-card:hover .demo-ext { color: var(--energy-deep); transform: translate(3px, -3px); }
.demo-name { font-size: 19px; font-weight: 800; margin-bottom: 8px; }
.demo-url {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--energy-deep);
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}
.demo-text { font-size: 14px; color: var(--ink-soft); flex: 1; }
.demo-foot {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed var(--line-strong);
  font-size: 12.5px;
  color: var(--ink-faint);
  display: flex;
  align-items: center;
  gap: 8px;
}
.demo-foot .pulse {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--save);
  box-shadow: 0 0 8px var(--save);
  animation: blink 1.8s infinite;
}

/* ---------- 页脚 ---------- */
.footer {
  position: relative;
  z-index: 1;
  background: linear-gradient(180deg, var(--bg) 0%, #EDF4F7 100%);
  border-top: 1px solid var(--line-strong);
  padding: clamp(48px, 6vw, 72px) clamp(20px, 5vw, 48px) 40px;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}
.footer-brand .nav-name { font-size: 20px; }
.footer-slogan {
  margin-top: 10px;
  font-size: 15px;
  color: var(--ink-soft);
  max-width: 320px;
}
.footer-col-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--ink-faint);
  margin-bottom: 14px;
}
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.footer-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.25s;
}
.footer-links a:hover { color: var(--energy-deep); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: var(--ink-faint);
}
.footer-bottom .mono { font-family: var(--font-mono); letter-spacing: 0.06em; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .evo-grid, .trust-grid, .demo-grid { grid-template-columns: 1fr; }
  .nav-links li:not(:last-child) { display: none; }
}
@media (max-width: 560px) {
  .metrics-grid { grid-template-columns: 1fr; }
  .hero { padding-bottom: 140px; }
  .hero-veil {
    width: 150vw;
    background: radial-gradient(circle, rgba(250, 251, 253, 0.86) 0%, rgba(250, 251, 253, 0.55) 48%, transparent 72%);
  }
  .ticker-label { font-size: 10px; padding: 0 12px; }
  .ticker { padding-left: 150px; }
  .hero-actions .btn { width: 100%; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   子页面共享组件
   ============================================================ */

/* ---------- 页内 Hero ---------- */
.page-hero {
  position: relative;
  z-index: 1;
  padding: calc(var(--nav-h) + clamp(64px, 9vw, 110px)) clamp(20px, 5vw, 48px) clamp(48px, 6vw, 80px);
  text-align: center;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -30%; left: 50%;
  width: min(80vw, 900px);
  aspect-ratio: 1.4;
  transform: translateX(-50%);
  background: radial-gradient(ellipse, var(--energy-glow) 0%, transparent 65%);
  z-index: -1;
  pointer-events: none;
}
.page-hero .sec-index { justify-content: center; }
.page-hero h1 {
  font-size: clamp(34px, 5.4vw, 62px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: 0.01em;
  max-width: 860px;
  margin: 0 auto 20px;
}
.page-hero h1 .energy-word {
  background: linear-gradient(100deg, var(--energy-deep) 10%, var(--energy) 45%, #39E6F5 70%, var(--energy-deep) 95%);
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: flowText 5s linear infinite;
}
.page-hero .lead {
  font-size: clamp(15.5px, 1.7vw, 18.5px);
  color: var(--ink-soft);
  max-width: 680px;
  margin: 0 auto;
}

/* 能量分割线 */
.energy-line {
  height: 2px;
  max-width: 220px;
  margin: 0 auto;
  background: linear-gradient(90deg, transparent, var(--energy), transparent);
  position: relative;
  overflow: visible;
}
.energy-line::after {
  content: '';
  position: absolute;
  top: -3px; left: 0;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--energy);
  box-shadow: 0 0 12px var(--energy);
  animation: linePulse 3.2s var(--ease-out) infinite;
}
@keyframes linePulse {
  0% { left: 0; opacity: 0; }
  12% { opacity: 1; }
  88% { opacity: 1; }
  100% { left: calc(100% - 8px); opacity: 0; }
}

/* ---------- 缘起：数据长河时间线 ---------- */
.timeline { position: relative; max-width: 880px; margin: 0 auto; }
.timeline::before {
  content: '';
  position: absolute;
  left: 50%; top: 0; bottom: 0;
  width: 2px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, var(--line-strong), var(--energy) 55%, var(--energy-deep));
  opacity: 0.55;
}
.tl-item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 90px 1fr;
  align-items: center;
  gap: 0;
  margin-bottom: clamp(40px, 6vw, 68px);
}
.tl-node {
  grid-column: 2;
  justify-self: center;
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--bg-pure);
  border: 2px solid var(--energy);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--energy-deep);
  box-shadow: 0 0 0 8px var(--bg), 0 0 24px rgba(0,194,209,0.35);
  z-index: 2;
  text-align: center;
  line-height: 1.25;
}
.tl-card {
  background: var(--bg-pure);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: clamp(22px, 2.8vw, 32px);
  box-shadow: var(--shadow-card);
  transition: transform 0.45s var(--ease-out), box-shadow 0.45s var(--ease-out), border-color 0.45s;
}
.tl-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
  border-color: rgba(8,145,178,0.4);
}
.tl-item:nth-child(odd) .tl-card { grid-column: 1; grid-row: 1; text-align: right; }
.tl-item:nth-child(even) .tl-card { grid-column: 3; grid-row: 1; }
.tl-year {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--energy-deep);
  margin-bottom: 8px;
}
.tl-title { font-size: 19px; font-weight: 800; margin-bottom: 8px; }
.tl-text { font-size: 14.5px; color: var(--ink-soft); margin-bottom: 12px; }
.tl-moment {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--energy-deep);
  border-top: 1px dashed var(--line-strong);
  padding-top: 12px;
}
.tl-moment::before { content: '「'; }
.tl-moment::after { content: '」'; }

.origin-finale {
  text-align: center;
  padding: clamp(40px, 6vw, 72px) 24px 0;
}
.origin-finale .big {
  font-size: clamp(24px, 3.6vw, 40px);
  font-weight: 800;
  line-height: 1.4;
  max-width: 760px;
  margin: 0 auto 16px;
}
.origin-finale .big em {
  font-style: normal;
  background: linear-gradient(100deg, var(--energy-deep), var(--energy));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.origin-finale p { color: var(--ink-soft); font-size: 16px; }

/* ---------- 技术：信号卡片 ---------- */
.signal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(14px, 2vw, 22px);
}
.signal {
  background: var(--bg-pure);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 22px 24px;
  transition: all 0.35s var(--ease-out);
}
.signal:hover { border-color: rgba(8,145,178,0.45); box-shadow: var(--shadow-lift); transform: translateY(-3px); }
.signal .s-name { font-size: 16px; font-weight: 700; display: flex; justify-content: space-between; align-items: baseline; }
.signal .s-unit { font-family: var(--font-mono); font-size: 11px; color: var(--energy-deep); letter-spacing: 0.08em; }
.signal .s-desc { font-size: 13.5px; color: var(--ink-faint); margin-top: 8px; line-height: 1.6; }
.signal .s-wave {
  margin-top: 14px;
  height: 34px;
  border-radius: 6px;
  background: #F2FAFB;
  border: 1px solid rgba(8,145,178,0.12);
  overflow: hidden;
  display: flex;
  align-items: center;
  padding: 0 8px;
}
.signal .s-wave svg { width: 100%; height: 20px; }

/* 通用 vs 垂直对照 */
.vs-wrap {
  display: grid;
  grid-template-columns: 1fr 64px 1fr;
  gap: 0;
  align-items: stretch;
  margin-top: clamp(36px, 5vw, 56px);
}
.vs-col {
  border-radius: var(--radius);
  padding: clamp(24px, 3vw, 36px);
}
.vs-col.general {
  background: rgba(11,43,69,0.03);
  border: 1px dashed var(--line-strong);
}
.vs-col.power {
  background: linear-gradient(135deg, #0B2B45 0%, #0E3D60 60%, #0A4A5E 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.vs-col.power::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 85% 15%, rgba(0,194,209,0.25), transparent 50%);
  pointer-events: none;
}
.vs-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  margin-bottom: 16px;
}
.vs-col.general .vs-badge { color: var(--ink-faint); }
.vs-col.power .vs-badge { color: #7FE9F2; }
.vs-col h3 { font-size: 20px; font-weight: 800; margin-bottom: 16px; }
.vs-row {
  display: flex;
  gap: 10px;
  font-size: 14.5px;
  padding: 9px 0;
  border-top: 1px solid rgba(11,43,69,0.07);
}
.vs-col.power .vs-row { border-top-color: rgba(255,255,255,0.14); }
.vs-row .k { flex: 0 0 84px; font-weight: 600; opacity: 0.85; }
.vs-row .v { flex: 1; }
.vs-col.general .vs-row .v { color: var(--ink-soft); }
.vs-col.power .vs-row .v { color: rgba(255,255,255,0.88); }
.vs-mid {
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--energy-deep);
  letter-spacing: 0.1em;
}

/* 数据流链路 */
.dataflow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  position: relative;
  margin-top: clamp(30px, 4vw, 44px);
}
.df-node {
  background: var(--bg-pure);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 22px 20px;
  text-align: center;
  position: relative;
  transition: all 0.35s var(--ease-out);
}
.df-node:hover { border-color: var(--energy); box-shadow: var(--shadow-lift); transform: translateY(-3px); }
.df-node:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -13px; top: 50%;
  transform: translateY(-50%);
  color: var(--energy);
  font-weight: 700;
  z-index: 2;
}
.df-step {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--energy-deep);
  margin-bottom: 8px;
}
.df-name { font-size: 15.5px; font-weight: 700; margin-bottom: 6px; }
.df-desc { font-size: 12.5px; color: var(--ink-faint); line-height: 1.6; }
.df-num {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--energy-deep);
  margin-top: 12px;
}
.df-num small { font-size: 11px; color: var(--ink-faint); font-weight: 500; display: block; letter-spacing: 0.06em; }

/* ---------- 技术：五层交互架构 ---------- */
.arch {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(24px, 3.4vw, 44px);
  align-items: start;
}
.arch-layers { display: flex; flex-direction: column; gap: 10px; }
.arch-layer {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--bg-pure);
  padding: 18px 22px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all 0.35s var(--ease-out);
  text-align: left;
  font-family: inherit;
  width: 100%;
}
.arch-layer:hover { border-color: rgba(8,145,178,0.45); transform: translateX(6px); }
.arch-layer.active {
  border-color: var(--energy);
  background: linear-gradient(90deg, rgba(0,194,209,0.08), rgba(0,194,209,0.02));
  box-shadow: 0 8px 28px rgba(0,194,209,0.14);
}
.arch-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--energy-deep);
  border: 1px solid rgba(8,145,178,0.3);
  border-radius: 8px;
  width: 42px; height: 42px;
  display: grid;
  place-items: center;
  flex: 0 0 42px;
}
.arch-layer.active .arch-idx { background: var(--energy); color: #fff; border-color: var(--energy); }
.arch-lname { font-size: 16px; font-weight: 700; color: var(--ink); }
.arch-lsub { font-size: 12.5px; color: var(--ink-faint); margin-top: 2px; }
.arch-detail {
  position: sticky;
  top: calc(var(--nav-h) + 20px);
  border-radius: var(--radius);
  background: linear-gradient(135deg, #0B2B45 0%, #0E3D60 60%, #0A4A5E 100%);
  color: #fff;
  padding: clamp(26px, 3vw, 38px);
  min-height: 380px;
  overflow: hidden;
  position: sticky;
}
.arch-detail::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 10%, rgba(0,194,209,0.22), transparent 55%);
  pointer-events: none;
}
.arch-detail .ad-idx {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: #7FE9F2;
  margin-bottom: 14px;
}
.arch-detail h3 { font-size: 22px; font-weight: 800; margin-bottom: 14px; position: relative; }
.arch-detail .ad-text { font-size: 14.5px; color: rgba(255,255,255,0.85); line-height: 1.8; position: relative; }
.arch-detail .ad-points { margin-top: 18px; display: flex; flex-direction: column; gap: 10px; position: relative; }
.arch-detail .ad-point {
  display: flex;
  gap: 10px;
  font-size: 13.5px;
  color: rgba(255,255,255,0.78);
  border-top: 1px solid rgba(255,255,255,0.14);
  padding-top: 10px;
}
.arch-detail .ad-point::before { content: '▸'; color: var(--energy); flex: 0 0 auto; }
.arch-detail.switching > * { animation: adIn 0.45s var(--ease-out); }
@keyframes adIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 技术：仪表台 ---------- */
.gauges {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(18px, 2.4vw, 28px);
}
.gauge-card {
  background: var(--bg-pure);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 26px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: all 0.35s var(--ease-out);
}
.gauge-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lift); border-color: rgba(8,145,178,0.4); }
.gauge-svg { width: 150px; height: 96px; margin: 0 auto 6px; display: block; }
.gauge-val {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  color: var(--ink);
}
.gauge-val small { font-size: 13px; color: var(--energy-deep); font-weight: 600; margin-left: 3px; }
.gauge-name { font-size: 14.5px; font-weight: 600; margin-top: 4px; }
.gauge-std {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
  margin-top: 8px;
}
.principle-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: clamp(30px, 4vw, 44px);
}
.principle-chips .chip { font-size: 14px; padding: 10px 22px; }
.principle-chips .chip b { color: var(--energy-deep); margin-right: 6px; }

/* ---------- 演进页：版本大块 ---------- */
.version-block {
  border: 1px solid var(--line-strong);
  border-radius: calc(var(--radius) + 6px);
  background: var(--bg-pure);
  overflow: hidden;
  margin-bottom: clamp(40px, 6vw, 72px);
  box-shadow: var(--shadow-card);
}
.vb-head {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: clamp(20px, 3vw, 40px);
  padding: clamp(26px, 3.4vw, 44px);
  background: linear-gradient(135deg, #F4FBFC 0%, #FFFFFF 70%);
  border-bottom: 1px solid var(--line);
  align-items: center;
}
.vb-glyph {
  height: 130px;
  border-radius: var(--radius-sm);
  background: #EFF9FA;
  border: 1px solid rgba(8,145,178,0.16);
  display: grid;
  place-items: center;
  overflow: hidden;
}
.vb-title .v-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--energy-deep);
  display: flex;
  gap: 14px;
  margin-bottom: 10px;
}
.vb-title h3 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; }
.vb-title .v-en {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--ink-faint);
  margin-top: 6px;
}
.vb-body {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
}
.vb-cell { background: var(--bg-pure); padding: clamp(22px, 2.8vw, 34px); }
.vb-cell .c-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--energy-deep);
  margin-bottom: 12px;
}
.vb-cell p { font-size: 14.5px; color: var(--ink-soft); line-height: 1.75; }
.vb-cell ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.vb-cell li {
  font-size: 14px;
  color: var(--ink-soft);
  padding-left: 18px;
  position: relative;
  line-height: 1.6;
}
.vb-cell li::before { content: '▸'; position: absolute; left: 0; color: var(--energy); }
.vb-cell .big-stat {
  font-family: var(--font-mono);
  font-size: clamp(30px, 3.4vw, 44px);
  font-weight: 700;
  color: var(--energy-deep);
  line-height: 1.1;
}
.vb-cell .big-stat small { font-size: 14px; }
.vb-cell .stat-note { font-size: 13px; color: var(--ink-faint); margin-top: 8px; }
.vb-foot {
  padding: 20px clamp(22px, 2.8vw, 34px);
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  background: #FAFDFE;
}
.vb-foot .demo-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--energy-deep);
  text-decoration: none;
}
.vb-foot .demo-link:hover { text-decoration: underline; }
.vb-foot .demo-url { font-family: var(--font-mono); font-size: 12px; color: var(--ink-faint); }

.evo-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin: -20px 0 clamp(40px, 6vw, 72px);
  color: var(--energy-deep);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.24em;
}
.evo-connector::before, .evo-connector::after {
  content: '';
  height: 1px;
  width: clamp(40px, 8vw, 120px);
  background: linear-gradient(90deg, transparent, var(--energy));
}
.evo-connector::after { transform: scaleX(-1); }

/* ---------- 应用页 ---------- */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2.2vw, 26px);
}
.scene-card {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--bg-pure);
  padding: clamp(22px, 2.6vw, 30px);
  transition: all 0.4s var(--ease-out);
  position: relative;
  overflow: hidden;
}
.scene-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lift); border-color: rgba(8,145,178,0.45); }
.scene-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--energy), var(--save));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease-out);
}
.scene-card:hover::after { transform: scaleX(1); }
.scene-icon { margin-bottom: 16px; }
.scene-icon svg { stroke: var(--energy-deep); }
.scene-name { font-size: 18px; font-weight: 800; margin-bottom: 4px; }
.scene-pain { font-size: 13px; color: var(--ink-faint); margin-bottom: 14px; line-height: 1.6; }
.scene-rate {
  display: flex;
  align-items: baseline;
  gap: 8px;
  border-top: 1px dashed var(--line-strong);
  padding-top: 14px;
}
.scene-rate .n { font-family: var(--font-mono); font-size: 26px; font-weight: 700; color: var(--save); }
.scene-rate .t { font-size: 12px; color: var(--ink-faint); }

.case-card {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  border: 1px solid var(--line-strong);
  border-radius: calc(var(--radius) + 4px);
  background: var(--bg-pure);
  overflow: hidden;
  margin-bottom: clamp(22px, 3vw, 34px);
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.4s;
}
.case-card:hover { box-shadow: var(--shadow-lift); }
.case-main { padding: clamp(24px, 3vw, 38px); }
.case-loc {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--energy-deep);
  margin-bottom: 10px;
}
.case-name { font-size: clamp(19px, 2.2vw, 24px); font-weight: 800; margin-bottom: 12px; }
.case-story { font-size: 14.5px; color: var(--ink-soft); line-height: 1.8; }
.case-data {
  background: linear-gradient(160deg, #F2FAFB 0%, #FAFDFE 100%);
  border-left: 1px solid var(--line);
  padding: clamp(24px, 3vw, 38px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
}
.case-num-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px dashed var(--line-strong);
  padding-bottom: 12px;
}
.case-num-row:last-child { border-bottom: none; padding-bottom: 0; }
.case-num-row .cn-l { font-size: 13px; color: var(--ink-soft); }
.case-num-row .cn-v { font-family: var(--font-mono); font-size: 20px; font-weight: 700; color: var(--ink); white-space: nowrap; }
.case-num-row .cn-v em { font-style: normal; color: var(--save); }

/* ---------- 未来页：飞轮 ---------- */
.flywheel-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}
.flywheel-svg { width: 100%; max-width: 460px; margin: 0 auto; display: block; }
.fw-steps { display: flex; flex-direction: column; gap: 16px; }
.fw-step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--bg-pure);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 18px 22px;
  transition: all 0.35s var(--ease-out);
}
.fw-step:hover { border-color: rgba(8,145,178,0.45); transform: translateX(6px); box-shadow: var(--shadow-lift); }
.fw-idx {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  color: #fff;
  background: linear-gradient(135deg, var(--energy-deep), var(--energy));
  width: 34px; height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  flex: 0 0 34px;
}
.fw-step .fw-name { font-size: 16px; font-weight: 700; }
.fw-step .fw-desc { font-size: 13.5px; color: var(--ink-soft); margin-top: 3px; line-height: 1.6; }

/* 路线图 */
.roadmap {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2.2vw, 26px);
  position: relative;
}
.rm-card {
  border-radius: var(--radius);
  padding: clamp(24px, 2.8vw, 34px);
  border: 1px solid var(--line-strong);
  background: var(--bg-pure);
  position: relative;
  transition: all 0.4s var(--ease-out);
}
.rm-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lift); }
.rm-card.done { background: #FAFDFE; }
.rm-card.now {
  border-color: var(--energy);
  box-shadow: 0 12px 40px rgba(0,194,209,0.16);
}
.rm-card.next {
  background: linear-gradient(135deg, #0B2B45 0%, #0E3D60 60%, #0A4A5E 100%);
  color: #fff;
  border: none;
}
.rm-state {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  padding: 4px 12px;
  border-radius: 999px;
  display: inline-block;
  margin-bottom: 16px;
}
.rm-card.done .rm-state { color: var(--save); background: rgba(15,185,129,0.09); border: 1px solid rgba(15,185,129,0.3); }
.rm-card.now .rm-state { color: var(--energy-deep); background: var(--energy-glow); border: 1px solid rgba(8,145,178,0.3); }
.rm-card.next .rm-state { color: #7FE9F2; border: 1px solid rgba(127,233,242,0.4); }
.rm-name { font-size: 20px; font-weight: 800; margin-bottom: 4px; }
.rm-en { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.2em; color: var(--ink-faint); margin-bottom: 14px; }
.rm-card.next .rm-en { color: rgba(255,255,255,0.55); }
.rm-text { font-size: 14px; color: var(--ink-soft); line-height: 1.75; }
.rm-card.next .rm-text { color: rgba(255,255,255,0.82); }

/* 合作 */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2.2vw, 26px);
}
.partner-card {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--bg-pure);
  padding: clamp(24px, 2.8vw, 34px);
  transition: all 0.4s var(--ease-out);
}
.partner-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lift); border-color: rgba(8,145,178,0.45); }
.partner-role {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--energy-deep);
  margin-bottom: 12px;
}
.partner-name { font-size: 19px; font-weight: 800; margin-bottom: 12px; }
.partner-card ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.partner-card li { font-size: 14px; color: var(--ink-soft); padding-left: 18px; position: relative; line-height: 1.65; }
.partner-card li::before { content: '▸'; position: absolute; left: 0; color: var(--energy); }

/* 结尾宣言 */
.manifesto {
  text-align: center;
  padding: clamp(56px, 8vw, 100px) 24px;
}
.manifesto .big {
  font-size: clamp(26px, 4.2vw, 46px);
  font-weight: 800;
  line-height: 1.35;
  max-width: 820px;
  margin: 0 auto 22px;
}
.manifesto .big em {
  font-style: normal;
  background: linear-gradient(100deg, var(--energy-deep), var(--energy));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.manifesto p { color: var(--ink-soft); font-size: 16.5px; max-width: 620px; margin: 0 auto 34px; }

/* 下一页导航卡 */
.next-page {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  max-width: var(--max-w);
  margin: 0 auto;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--bg-pure);
  padding: clamp(24px, 3vw, 36px) clamp(24px, 3.4vw, 44px);
  text-decoration: none;
  color: var(--ink);
  transition: all 0.4s var(--ease-out);
}
.next-page:hover { border-color: var(--energy); box-shadow: var(--shadow-lift); transform: translateY(-3px); }
.next-page .np-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--energy-deep);
  margin-bottom: 6px;
}
.next-page .np-title { font-size: clamp(19px, 2.4vw, 26px); font-weight: 800; }
.next-page .np-arrow {
  font-size: 26px;
  color: var(--energy-deep);
  transition: transform 0.3s var(--ease-out);
}
.next-page:hover .np-arrow { transform: translateX(6px); }

/* ---------- 子页面响应式 ---------- */
@media (max-width: 960px) {
  .signal-grid, .scene-grid, .partner-grid, .roadmap { grid-template-columns: repeat(2, 1fr); }
  .arch { grid-template-columns: 1fr; }
  .arch-detail { position: static; min-height: 0; }
  .vb-head { grid-template-columns: 1fr; }
  .vb-glyph { max-width: 240px; }
  .vb-body { grid-template-columns: 1fr; }
  .case-card { grid-template-columns: 1fr; }
  .case-data { border-left: none; border-top: 1px solid var(--line); }
  .flywheel-wrap { grid-template-columns: 1fr; }
  .dataflow { grid-template-columns: repeat(2, 1fr); }
  .df-node:nth-child(2)::after { display: none; }
  .vs-wrap { grid-template-columns: 1fr; }
  .vs-mid { padding: 14px 0; }
}
@media (max-width: 640px) {
  .signal-grid, .scene-grid, .partner-grid, .roadmap, .gauges { grid-template-columns: 1fr; }
  .dataflow { grid-template-columns: 1fr; }
  .df-node::after { display: none !important; }
  /* 时间线转单侧 */
  .timeline::before { left: 24px; }
  .tl-item { grid-template-columns: 48px 1fr; }
  .tl-node { grid-column: 1; width: 48px; height: 48px; font-size: 10px; }
  .tl-item:nth-child(odd) .tl-card,
  .tl-item:nth-child(even) .tl-card { grid-column: 2; grid-row: 1; text-align: left; }
}