/* =========================================================================
   沃才高科 WOCAI — 官网样式表
   品牌色取自官方 LOGO 像素采样：#009CE4（主）/ #F0A818（辅）/ 透明底
   ========================================================================= */

/* ---------- 1. 变量 ---------- */
:root {
  --brand: #009CE4;
  --brand-d: #0079B4;
  --brand-l: #35B2EF;
  --brand-xl: #6FCCF8;
  --gold: #F0A818;
  --gold-l: #FFCB4D;
  --gold-d: #C98608;

  --ink-0: #FFFFFF;
  --ink-50: #F5F8FC;
  --ink-100: #EDF2F8;
  --ink-200: #DCE6F0;
  --ink-300: #B9C8D8;
  --ink-400: #8095AC;
  --ink-500: #5A7085;
  --ink-600: #3C4E60;
  --ink-700: #22303F;
  --ink-800: #121A24;
  --ink-900: #0A1018;
  --ink-950: #05090F;

  --paper: #FFFFFF;
  --mist: #F4F7FB;
  --mist-2: #EAF1F8;

  --line: rgba(10, 20, 35, 0.10);
  --line-2: rgba(10, 20, 35, 0.16);
  --line-dark: rgba(255, 255, 255, 0.12);

  --shadow-xs: 0 1px 2px rgba(10, 20, 35, 0.06);
  --shadow-sm: 0 2px 8px rgba(10, 20, 35, 0.06), 0 1px 2px rgba(10, 20, 35, 0.04);
  --shadow-md: 0 12px 32px -8px rgba(10, 20, 35, 0.12), 0 2px 8px rgba(10, 20, 35, 0.05);
  --shadow-lg: 0 32px 72px -16px rgba(10, 20, 35, 0.20), 0 8px 24px rgba(10, 20, 35, 0.06);
  --shadow-glow: 0 16px 48px -12px rgba(0, 156, 228, 0.45);
  --shadow-gold: 0 16px 40px -14px rgba(240, 168, 24, 0.45);

  --r-xs: 8px;
  --r-sm: 12px;
  --r-md: 16px;
  --r-lg: 22px;
  --r-xl: 28px;
  --r-2xl: 36px;
  --r-full: 999px;

  --section-y: clamp(64px, 8vw, 132px);
  --shell: 1200px;
  --pad: clamp(20px, 4vw, 40px);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-inout: cubic-bezier(0.65, 0, 0.35, 1);

  --nav-h: 68px;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", "Roboto Mono", Menlo,
    Consolas, "Courier New", monospace;
}

/* ---------- 2. 基础重置 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 20px);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-800);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}

img, svg, video, canvas { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6, p, figure, dl, dd { margin: 0; }
table { border-collapse: collapse; border-spacing: 0; width: 100%; }

::selection { background: rgba(0, 156, 228, 0.22); color: var(--ink-900); }

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------- 3. 布局工具 ---------- */
.shell {
  width: 100%;
  max-width: calc(var(--shell) + var(--pad) * 2);
  margin: 0 auto;
  padding-inline: var(--pad);
}

.section { padding-block: var(--section-y); }
.section--tight { padding-block: clamp(48px, 6vw, 84px); }
.section--mist { background: var(--mist); }
.section--mist2 { background: var(--mist-2); }
.section--dark { background: var(--ink-950); color: #fff; }
.section--dark h1, .section--dark h2, .section--dark h3, .section--dark h4 { color: #fff; }

.stack { display: flex; flex-direction: column; }
.row { display: flex; align-items: center; }
.wrap { flex-wrap: wrap; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.gap-32 { gap: 32px; }
.center { text-align: center; }
.mx-auto { margin-inline: auto; }
.measure { max-width: 68ch; }
.measure-sm { max-width: 52ch; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.mb-48 { margin-bottom: 48px; }

.grid { display: grid; gap: clamp(16px, 2vw, 28px); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-auto-sm { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}
.split--wide { grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); }
.split--narrow { grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); }

/* ---------- 4. 排版 ---------- */
.display {
  font-size: clamp(38px, 6.2vw, 76px);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -0.032em;
}

.h1 {
  font-size: clamp(32px, 4.6vw, 56px);
  line-height: 1.14;
  font-weight: 700;
  letter-spacing: -0.028em;
}

.h2 {
  font-size: clamp(26px, 3.4vw, 42px);
  line-height: 1.22;
  font-weight: 680;
  letter-spacing: -0.022em;
}

.h3 {
  font-size: clamp(20px, 2.2vw, 27px);
  line-height: 1.34;
  font-weight: 660;
  letter-spacing: -0.016em;
}

.h4 {
  font-size: clamp(17px, 1.6vw, 19px);
  line-height: 1.45;
  font-weight: 640;
  letter-spacing: -0.008em;
}

.lead {
  font-size: clamp(16.5px, 1.5vw, 19.5px);
  line-height: 1.75;
  color: var(--ink-500);
}

.body { color: var(--ink-500); }
.body strong, .body b { color: var(--ink-800); font-weight: 620; }
.small { font-size: 14px; line-height: 1.7; color: var(--ink-500); }
.xsmall { font-size: 12.5px; line-height: 1.65; color: var(--ink-400); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand);
  margin-bottom: 20px;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: linear-gradient(90deg, var(--brand), transparent);
}

.gradient-text {
  background: linear-gradient(100deg, var(--brand) 0%, var(--brand-l) 46%, var(--gold) 92%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
  letter-spacing: -0.02em;
}

/* ---------- 5. 区块标题 ---------- */
.sec-head { max-width: 720px; margin-bottom: clamp(36px, 4.5vw, 64px); }
.sec-head--center { margin-inline: auto; text-align: center; }
.sec-head--center .eyebrow { justify-content: center; }
.sec-head .lead { margin-top: 20px; }

/* ---------- 6. 导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.nav.is-scrolled {
  background: rgba(255, 255, 255, 0.86);
  border-bottom-color: var(--line);
  box-shadow: var(--shadow-xs);
}
.nav.is-dark {
  background: rgba(5, 9, 15, 0.62);
  border-bottom-color: rgba(255, 255, 255, 0.08);
}
.nav.is-dark .nav__inner { color: #fff; }
.nav.is-dark .brand__en { color: rgba(255,255,255,.55); }
.nav.is-dark .nav__link { color: rgba(255, 255, 255, 0.78); }
.nav.is-dark .nav__link:hover, .nav.is-dark .nav__link.is-active { color: #fff; }
.nav.is-dark .nav__menu-btn { color: #fff; }

.nav__inner {
  width: 100%;
  max-width: calc(var(--shell) + var(--pad) * 2);
  margin: 0 auto;
  padding-inline: var(--pad);
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
}
.brand__logo { width: 30px; height: 30px; object-fit: contain; }
.brand__name {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.1;
}
.brand__en {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--ink-400);
  text-transform: uppercase;
  margin-top: 2px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.nav__link {
  position: relative;
  padding: 8px 13px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-600);
  border-radius: var(--r-full);
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
  white-space: nowrap;
}
.nav__link:hover { color: var(--ink-900); background: rgba(10, 20, 35, 0.04); }
.nav.is-dark .nav__link:hover { background: rgba(255, 255, 255, 0.08); }
.nav__link.is-active { color: var(--brand); font-weight: 600; }
.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 50%; bottom: -1px;
  transform: translateX(-50%);
  width: 16px; height: 2px;
  border-radius: 2px;
  background: var(--brand);
}

.nav__actions { display: flex; align-items: center; gap: 10px; margin-left: 18px; }

.nav__menu-btn {
  display: none;
  width: 40px; height: 40px;
  border-radius: var(--r-sm);
  align-items: center;
  justify-content: center;
  color: var(--ink-800);
}
.nav__menu-btn span {
  display: block;
  width: 18px; height: 1.5px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.2s var(--ease);
}
.nav__menu-btn span + span { margin-top: 5px; }
.nav__menu-btn.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__menu-btn.is-open span:nth-child(2) { opacity: 0; }
.nav__menu-btn.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-nav {
  position: fixed;
  inset: var(--nav-h) 0 auto 0;
  z-index: 99;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
  padding: 12px var(--pad) 24px;
  display: none;
  box-shadow: var(--shadow-md);
}
.mobile-nav.is-open { display: block; }
.mobile-nav a {
  display: block;
  padding: 14px 8px;
  font-size: 17px;
  font-weight: 500;
  border-bottom: 1px solid var(--line);
  color: var(--ink-800);
}
.mobile-nav a.is-active { color: var(--brand); }
.mobile-nav .btn { margin-top: 18px; width: 100%; }

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--r-full);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.005em;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease),
    background 0.22s var(--ease), color 0.22s var(--ease), border-color 0.22s var(--ease);
}
.btn:hover { transform: translateY(-1.5px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: linear-gradient(135deg, var(--brand-d), var(--brand) 55%, var(--brand-l));
  color: #fff;
  box-shadow: var(--shadow-glow);
}
.btn--primary:hover { box-shadow: 0 20px 56px -12px rgba(0, 156, 228, 0.6); }

.btn--gold {
  background: linear-gradient(135deg, #E09810, var(--gold) 60%, #FFCB4D 100%);
  color: #2A1C01;
  box-shadow: var(--shadow-gold);
}

.btn--outline {
  background: transparent;
  color: var(--ink-800);
  border-color: var(--line-2);
}
.btn--outline:hover { border-color: var(--ink-300); background: var(--mist); }

.btn--ghost-dark {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.22);
}
.btn--ghost-dark:hover { background: rgba(255, 255, 255, 0.12); border-color: rgba(255,255,255,.35); }

.btn--lg { padding: 15px 32px; font-size: 16.5px; }
.btn--sm { padding: 9px 18px; font-size: 14px; }
.btn--block { width: 100%; }

.btn__arrow { transition: transform 0.22s var(--ease); }
.btn:hover .btn__arrow { transform: translateX(3px); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--brand);
  font-weight: 600;
  font-size: 15px;
  transition: gap 0.22s var(--ease);
}
.link-arrow:hover { gap: 12px; }
.section--dark .link-arrow { color: var(--brand-xl); }

/* ---------- 8. Hero ---------- */
.hero {
  position: relative;
  background: var(--ink-950);
  color: #fff;
  padding-top: calc(var(--nav-h) + clamp(56px, 7vw, 104px));
  padding-bottom: clamp(64px, 8vw, 120px);
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 55% at 18% 12%, rgba(0, 156, 228, 0.30), transparent 62%),
    radial-gradient(45% 45% at 88% 22%, rgba(240, 168, 24, 0.16), transparent 65%),
    radial-gradient(70% 60% at 50% 108%, rgba(0, 156, 228, 0.18), transparent 70%);
  z-index: -2;
}
.hero__grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.5;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 78%);
}
.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: clamp(36px, 5vw, 72px);
  align-items: center;
}
.hero .lead { color: rgba(255, 255, 255, 0.72); }

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px 7px 12px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--r-full);
  background: rgba(255, 255, 255, 0.06);
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 26px;
}
.hero__badge .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--brand-l);
  box-shadow: 0 0 0 0 rgba(53, 178, 239, 0.7);
  animation: pulse 2.4s infinite;
}
@keyframes pulse {
  70% { box-shadow: 0 0 0 8px rgba(53, 178, 239, 0); }
  100% { box-shadow: 0 0 0 0 rgba(53, 178, 239, 0); }
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 44px;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.hero__stat b {
  display: block;
  font-size: clamp(24px, 2.6vw, 32px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
}
.hero__stat b i { font-style: normal; font-size: 0.52em; font-weight: 500; color: rgba(255,255,255,.6); margin-left: 2px; }
.hero__stat span { font-size: 13px; color: rgba(255, 255, 255, 0.55); }

/* Hero 视觉：EmoVista 核心 */
.reactor { position: relative; aspect-ratio: 1; display: grid; place-items: center; }
.reactor__ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.reactor__ring--1 { inset: 4%; }
.reactor__ring--2 { inset: 18%; border-style: dashed; border-color: rgba(0,156,228,.35); animation: spin 46s linear infinite; }
.reactor__ring--3 { inset: 32%; border-color: rgba(255,255,255,.14); }
@keyframes spin { to { transform: rotate(360deg); } }
.reactor__core {
  position: relative;
  width: 46%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 42%, #9ADCFF 0%, var(--brand-l) 22%, var(--brand) 52%, rgba(0,121,180,.55) 78%);
  box-shadow: 0 0 100px 12px rgba(0, 156, 228, 0.45), inset 0 0 60px rgba(255,255,255,.22);
  display: grid;
  place-items: center;
  animation: breathe 5.5s ease-in-out infinite;
}
@keyframes breathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.045); }
}
.reactor__core span {
  font-family: var(--font-mono);
  font-size: clamp(10px, 1.05vw, 12.5px);
  letter-spacing: 0.14em;
  text-align: center;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.96);
  text-transform: uppercase;
  text-shadow: 0 1px 12px rgba(0,0,0,.4);
  padding: 0 6px;
}
.reactor__node {
  position: absolute;
  padding: 9px 14px;
  border-radius: var(--r-md);
  background: rgba(10, 16, 24, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.88);
  white-space: nowrap;
  box-shadow: var(--shadow-md);
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-7px); }
}
.reactor__node:nth-of-type(1) { top: 4%; left: 50%; transform: translateX(-50%); }
.reactor__node:nth-of-type(2) { top: 24%; right: 0; }
.reactor__node:nth-of-type(3) { bottom: 24%; right: 2%; animation-delay: .8s; }
.reactor__node:nth-of-type(4) { bottom: 3%; left: 50%; transform: translateX(-50%); animation-delay: 1.6s; }
.reactor__node:nth-of-type(5) { bottom: 26%; left: 0; animation-delay: 2.4s; }
.reactor__node:nth-of-type(6) { top: 26%; left: 2%; animation-delay: 3.2s; }

/* ---------- 9. 卡片 ---------- */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: clamp(22px, 2.4vw, 32px);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out), border-color 0.35s var(--ease);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--line-2); }

.card--plain { box-shadow: none; background: transparent; }
.card--mist { background: var(--mist); box-shadow: none; }
.card--mist:hover { background: var(--mist-2); }
.card--glass {
  background: rgba(255, 255, 255, 0.055);
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow: none;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: #fff;
}
.card--glass:hover { background: rgba(255, 255, 255, 0.085); border-color: rgba(255,255,255,.24); }
.card--glass p { color: rgba(255,255,255,.68); }

.card__icon {
  width: 46px; height: 46px;
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  background: linear-gradient(140deg, rgba(0,156,228,.14), rgba(0,156,228,.04));
  border: 1px solid rgba(0, 156, 228, 0.18);
  color: var(--brand);
}
.card__icon--gold {
  background: linear-gradient(140deg, rgba(240,168,24,.16), rgba(240,168,24,.04));
  border-color: rgba(240, 168, 24, 0.24);
  color: var(--gold);
}
.card__badge {
  align-self: flex-start;
  padding: 5px 12px;
  border-radius: var(--r-full);
  background: rgba(0, 156, 228, 0.1);
  color: var(--brand-d);
  font-size: 12.5px;
  font-weight: 600;
  margin-bottom: 16px;
}
.card__badge--gold { background: rgba(240,168,24,.14); color: #9A6A05; }
.card__title { margin-bottom: 10px; }
.card__text { color: var(--ink-500); font-size: 15px; line-height: 1.72; }
.card__foot { margin-top: auto; padding-top: 20px; }

.tag-list { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 16px; }
.tag {
  padding: 5px 11px;
  border-radius: var(--r-full);
  background: var(--mist-2);
  color: var(--ink-600);
  font-size: 12.5px;
  font-weight: 500;
}
.tag--brand { background: rgba(0,156,228,.09); color: var(--brand-d); }
.tag--gold { background: rgba(240,168,24,.12); color: #8E6305; }
.section--dark .tag { background: rgba(255,255,255,.08); color: rgba(255,255,255,.72); }

/* ---------- 10. 指标 / 数据 ---------- */
.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.metric {
  padding: clamp(22px, 2.6vw, 34px) 22px;
  background: var(--paper);
  text-align: center;
}
.metric b {
  display: block;
  font-size: clamp(28px, 3.6vw, 46px);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.035em;
  background: linear-gradient(140deg, var(--ink-900) 20%, var(--brand) 130%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.metric b i { font-style: normal; font-size: 0.42em; font-weight: 600; margin-left: 2px; letter-spacing: -0.01em; }
.metric span { display: block; font-size: 13.5px; color: var(--ink-500); margin-top: 8px; }

.params { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1px; background: rgba(255,255,255,.12); border-radius: var(--r-lg); overflow: hidden; border: 1px solid rgba(255,255,255,.12); }
.param { padding: 24px 20px; background: rgba(255,255,255,.035); text-align: center; }
.param b {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.6vw, 32px);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: #fff;
}
.param b i { font-style: normal; font-size: 0.5em; color: rgba(255,255,255,.6); margin-left: 2px; }
.param span { display: block; font-size: 12.5px; color: rgba(255,255,255,.58); margin-top: 6px; }

/* ---------- 11. 流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; }
.flow__step {
  position: relative;
  padding: 24px 18px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  text-align: center;
}
.flow__n {
  width: 32px; height: 32px;
  margin: 0 auto 14px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--brand-d), var(--brand-l));
  box-shadow: 0 6px 18px -6px rgba(0,156,228,.6);
}
.flow__step b { display: block; font-size: 15px; font-weight: 640; margin-bottom: 5px; }
.flow__step span { font-size: 13px; color: var(--ink-400); line-height: 1.6; }

/* ---------- 12. 标签页 ---------- */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 6px;
  background: var(--mist);
  border: 1px solid var(--line);
  border-radius: var(--r-full);
  width: fit-content;
  margin: 0 auto 36px;
}
.tab {
  padding: 10px 22px;
  border-radius: var(--r-full);
  font-size: 15px;
  font-weight: 560;
  color: var(--ink-500);
  transition: all 0.26s var(--ease);
}
.tab:hover { color: var(--ink-900); }
.tab.is-active {
  background: var(--paper);
  color: var(--brand-d);
  box-shadow: var(--shadow-sm);
}
.tab-panel { display: none; }
.tab-panel.is-active { display: block; animation: fadeUp 0.5s var(--ease-out); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

/* ---------- 13. 时间线 ---------- */
.timeline { position: relative; padding-left: 30px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 5px; top: 8px; bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--brand), rgba(0,156,228,.16));
}
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -30px; top: 8px;
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--brand);
  box-shadow: 0 0 0 4px rgba(0,156,228,.12);
}
.tl-item__y {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gold);
  font-weight: 600;
  margin-bottom: 6px;
}
.tl-item b { display: block; font-size: 16.5px; font-weight: 640; margin-bottom: 6px; }
.tl-item p { color: var(--ink-500); font-size: 15px; }

/* ---------- 14. 检查清单 ---------- */
.check-list { display: grid; gap: 12px; }
.check-list li {
  position: relative;
  padding-left: 30px;
  color: var(--ink-600);
  font-size: 15.5px;
  line-height: 1.7;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: rgba(0,156,228,.12);
  border: 1px solid rgba(0,156,228,.3);
}
.check-list li::after {
  content: "";
  position: absolute;
  left: 5px; top: 13px;
  width: 6px; height: 3px;
  border-left: 1.6px solid var(--brand);
  border-bottom: 1.6px solid var(--brand);
  transform: rotate(-45deg);
}
.section--dark .check-list li { color: rgba(255,255,255,.8); }
.section--dark .check-list li::before { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.28); }
.section--dark .check-list li::after { border-color: var(--brand-xl); }

/* ---------- 15. 折叠面板 ---------- */
.acc { border: 1px solid var(--line); border-radius: var(--r-md); background: var(--paper); overflow: hidden; }
.acc + .acc { margin-top: 12px; }
.acc__btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  text-align: left;
  transition: background 0.24s var(--ease);
}
.acc__btn:hover { background: var(--mist); }
.acc__ico {
  width: 40px; height: 40px;
  flex-shrink: 0;
  border-radius: var(--r-sm);
  display: grid;
  place-items: center;
  background: linear-gradient(140deg, rgba(0,156,228,.13), rgba(0,156,228,.03));
  border: 1px solid rgba(0,156,228,.18);
  color: var(--brand-d);
  font-weight: 700;
  font-size: 15px;
}
.acc__label { flex: 1; min-width: 0; }
.acc__label b { display: block; font-size: 16.5px; font-weight: 640; }
.acc__label span { font-size: 13.5px; color: var(--ink-400); }
.acc__chev { flex-shrink: 0; color: var(--ink-400); transition: transform 0.32s var(--ease), color .24s var(--ease); }
.acc.is-open .acc__chev { transform: rotate(180deg); color: var(--brand); }
.acc__body { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.42s var(--ease); }
.acc.is-open .acc__body { grid-template-rows: 1fr; }
.acc__inner { overflow: hidden; }
.acc__pad { padding: 0 24px 26px; border-top: 1px solid var(--line); padding-top: 24px; }

.kpis { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.kpi {
  padding: 12px 18px;
  border-radius: var(--r-sm);
  background: var(--mist);
  border: 1px solid var(--line);
  min-width: 120px;
}
.kpi b { display: block; font-family: var(--font-mono); font-size: 20px; font-weight: 600; letter-spacing: -.02em; color: var(--brand-d); }
.kpi span { font-size: 12.5px; color: var(--ink-500); }

.quote {
  position: relative;
  padding: 20px 24px;
  border-left: 3px solid var(--brand);
  background: linear-gradient(90deg, rgba(0,156,228,.06), transparent);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  color: var(--ink-700);
  font-size: 15.5px;
  line-height: 1.75;
  margin-top: 22px;
}
.quote footer { margin-top: 10px; font-size: 13.5px; color: var(--ink-400); }

/* ---------- 16. 表格 / 规格 ---------- */
.spec { border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; }
.spec-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 20px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--line);
}
.spec-row:last-child { border-bottom: 0; }
.spec-row:nth-child(odd) { background: var(--mist); }
.spec-row dt { color: var(--ink-500); font-size: 14.5px; }
.spec-row dd { margin: 0; color: var(--ink-800); font-size: 15px; }

/* ---------- 17. 表单 ---------- */
.form { display: grid; gap: 18px; }
.field { display: grid; gap: 8px; }
.field > label { font-size: 14px; font-weight: 560; color: var(--ink-700); }
.field > label em { font-style: normal; color: var(--gold); }
.input, .textarea, .select {
  width: 100%;
  padding: 13px 16px;
  background: var(--paper);
  border: 1px solid var(--line-2);
  border-radius: var(--r-md);
  font-size: 15px;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease), background .2s var(--ease);
}
.input::placeholder, .textarea::placeholder { color: var(--ink-300); }
.input:focus, .textarea:focus, .select:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(0,156,228,.12);
}
.textarea { min-height: 120px; resize: vertical; line-height: 1.7; }
.select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%235A7085' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 44px;
}
.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 13.5px; color: var(--ink-500); line-height: 1.65; cursor: pointer; }
.consent input { margin-top: 3px; width: 16px; height: 16px; accent-color: var(--brand); flex-shrink: 0; }
.form-msg { display: none; padding: 14px 18px; border-radius: var(--r-md); font-size: 14.5px; line-height: 1.65; }
.form-msg.is-show { display: block; animation: fadeUp .4s var(--ease-out); }
.form-msg--ok { background: rgba(0,156,228,.08); border: 1px solid rgba(0,156,228,.24); color: var(--brand-d); }
.form-msg--err { background: rgba(240,168,24,.1); border: 1px solid rgba(240,168,24,.3); color: #8E6305; }

/* ---------- 18. 联系卡片 ---------- */
.contact-info { display: grid; gap: 14px; }
.contact-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: border-color .28s var(--ease), box-shadow .28s var(--ease), transform .28s var(--ease-out);
}
.contact-item:hover { border-color: rgba(0,156,228,.32); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.contact-item__ico {
  width: 42px; height: 42px;
  flex-shrink: 0;
  border-radius: var(--r-sm);
  display: grid;
  place-items: center;
  background: linear-gradient(140deg, rgba(0,156,228,.13), rgba(0,156,228,.03));
  border: 1px solid rgba(0,156,228,.18);
  color: var(--brand);
}
.contact-item b { display: block; font-size: 13.5px; font-weight: 500; color: var(--ink-400); margin-bottom: 3px; }
.contact-item a, .contact-item span { font-size: 16px; font-weight: 560; color: var(--ink-800); word-break: break-all; }
.contact-item a:hover { color: var(--brand); }

/* ---------- 19. CTA ---------- */
.cta-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(40px, 5.5vw, 76px);
  border-radius: var(--r-2xl);
  background:
    radial-gradient(80% 120% at 8% 0%, rgba(0,156,228,.35), transparent 58%),
    radial-gradient(70% 110% at 96% 100%, rgba(240,168,24,.22), transparent 55%),
    var(--ink-950);
  color: #fff;
  text-align: center;
  isolation: isolate;
}
.cta-panel::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, #000 20%, transparent 75%);
  z-index: -1;
}
.cta-panel .lead { color: rgba(255,255,255,.74); max-width: 60ch; margin-inline: auto; }
.cta-panel__actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-top: 34px; }

/* ---------- 20. 合作伙伴墙 ---------- */
.partner-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; }
.partner {
  display: grid;
  place-items: center;
  gap: 6px;
  padding: 22px 16px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  text-align: center;
  transition: border-color .28s var(--ease), transform .28s var(--ease-out), box-shadow .28s var(--ease);
}
.partner:hover { border-color: rgba(0,156,228,.34); transform: translateY(-3px); box-shadow: var(--shadow-sm); }
.partner b { font-size: 15px; font-weight: 620; }
.partner span { font-size: 12px; color: var(--ink-400); font-family: var(--font-mono); letter-spacing: .05em; }

/* ---------- 21. 图片 ---------- */
.shot {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
  background: var(--mist-2);
}
.shot img { width: 100%; height: 100%; object-fit: cover; }
.frame {
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  padding: 10px;
  background: var(--paper);
  box-shadow: var(--shadow-md);
}

/* 情绪指标网格 */
.indicators { display: grid; grid-template-columns: repeat(auto-fit, minmax(118px, 1fr)); gap: 12px; }
.indicator {
  display: grid;
  justify-items: center;
  gap: 8px;
  padding: 18px 10px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  text-align: center;
  transition: transform .28s var(--ease-out), border-color .28s var(--ease), box-shadow .28s var(--ease);
}
.indicator:hover { transform: translateY(-3px); border-color: rgba(0,156,228,.32); box-shadow: var(--shadow-sm); }
.indicator img { width: 46px; height: 46px; object-fit: contain; }
.indicator span { font-size: 13.5px; font-weight: 560; color: var(--ink-700); }

/* ---------- 22. 人脸识别 H5 ---------- */
.recog {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 380px);
  gap: clamp(24px, 3vw, 40px);
  align-items: start;
}
.cam {
  position: relative;
  aspect-ratio: 3 / 4;
  max-height: 70vh;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--ink-900);
  border: 1px solid var(--line-dark);
  display: grid;
  place-items: center;
}
.cam video, .cam img { width: 100%; height: 100%; object-fit: cover; }
.cam__guide {
  position: absolute;
  width: 62%;
  aspect-ratio: 1 / 1.25;
  border: 2px dashed rgba(255,255,255,.6);
  border-radius: 46% 46% 50% 50% / 40% 40% 60% 60%;
  pointer-events: none;
}
.cam__hint {
  position: absolute;
  bottom: 18px; left: 50%;
  transform: translateX(-50%);
  padding: 8px 16px;
  border-radius: var(--r-full);
  background: rgba(5,9,15,.65);
  backdrop-filter: blur(10px);
  color: #fff;
  font-size: 13.5px;
  white-space: nowrap;
}
.cam__empty { text-align: center; color: rgba(255,255,255,.55); padding: 24px; }
.cam__empty svg { margin: 0 auto 14px; opacity: .6; }
.scanline {
  position: absolute;
  left: 8%; right: 8%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--brand-l), transparent);
  box-shadow: 0 0 18px var(--brand-l);
  animation: scan 2.6s ease-in-out infinite;
  opacity: 0;
}
.scanline.is-on { opacity: 1; }
@keyframes scan {
  0% { top: 20%; }
  50% { top: 76%; }
  100% { top: 20%; }
}

/* ---------- 23. 页脚 ---------- */
.footer {
  background: var(--ink-950);
  color: rgba(255,255,255,.62);
  padding-top: clamp(52px, 6vw, 84px);
  padding-bottom: 28px;
}
.footer__top {
  display: grid;
  grid-template-columns: 1.7fr repeat(3, minmax(0, 1fr));
  gap: clamp(28px, 4vw, 56px);
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer__logo { width: 34px; height: 34px; margin-bottom: 18px; }
.footer__slogan { font-size: 15px; color: rgba(255,255,255,.78); margin-bottom: 18px; max-width: 34ch; line-height: 1.7; }
.footer__addr { font-size: 13.5px; line-height: 1.85; color: rgba(255,255,255,.5); }
.footer h4 { color: #fff; font-size: 14.5px; font-weight: 620; margin-bottom: 16px; letter-spacing: .01em; }
.footer li { margin-bottom: 10px; }
.footer li a { font-size: 14px; transition: color .2s var(--ease); }
.footer li a:hover { color: var(--brand-xl); }
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: 13px;
  color: rgba(255,255,255,.42);
}
.footer__links { display: flex; flex-wrap: wrap; gap: 20px; }
.footer__links a:hover { color: var(--brand-xl); }

/* ---------- 24. 面包屑 ---------- */
.crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--ink-400);
  margin-bottom: 18px;
}
.crumb a:hover { color: var(--brand); }
.crumb span { color: var(--ink-300); }

/* 子页 Hero */
.subhero {
  position: relative;
  padding-top: calc(var(--nav-h) + clamp(48px, 6vw, 84px));
  padding-bottom: clamp(48px, 6vw, 88px);
  background:
    radial-gradient(70% 90% at 12% 0%, rgba(0,156,228,.20), transparent 60%),
    radial-gradient(50% 70% at 92% 10%, rgba(240,168,24,.12), transparent 62%),
    var(--ink-950);
  color: #fff;
  overflow: hidden;
}
.subhero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 75% 80% at 30% 20%, #000 20%, transparent 76%);
  -webkit-mask-image: radial-gradient(ellipse 75% 80% at 30% 20%, #000 20%, transparent 76%);
}
.subhero__inner { position: relative; }
.subhero .lead { color: rgba(255,255,255,.72); max-width: 62ch; }
.subhero .crumb { color: rgba(255,255,255,.55); }
.subhero .crumb span { color: rgba(255,255,255,.35); }

/* ---------- 25. 动效 ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .75s var(--ease-out), transform .75s var(--ease-out); transition-delay: var(--d, 0ms); }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- 26. 响应式 ---------- */
@media (max-width: 1080px) {
  .footer__top { grid-template-columns: 1fr 1fr; }
  .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flow { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 960px) {
  :root { --nav-h: 62px; }
  .nav__links, .nav__actions { display: none; }
  .nav__menu-btn { display: flex; margin-left: auto; }
  .hero__inner, .split, .split--wide, .split--narrow, .recog { grid-template-columns: 1fr; }
  .hero__visual { order: -1; max-width: 460px; margin-inline: auto; width: 100%; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .spec-row { grid-template-columns: 1fr; gap: 6px; }
}

@media (max-width: 720px) {
  .hero__stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metrics, .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__top { grid-template-columns: 1fr; }
  .reactor { max-width: 380px; margin-inline: auto; }
  .reactor__node { padding: 7px 11px; font-size: 11.5px; }
  .tabs { width: 100%; justify-content: center; }
  .tab { padding: 9px 15px; font-size: 14px; }
  .cam { aspect-ratio: 3 / 4.2; }
}