/* ==========================================================================
   辰太数字 CHEN Digital — 官网设计系统 v1.0
   品牌：AI时代的转型伙伴 · 辰系列——企业AI转型的基础设施
   风格：深海军蓝 + 科技蓝 + 亮色点缀（信任与权威 Trust & Authority）
   ========================================================================== */

/* ---------- 1. 设计令牌 Tokens ---------- */
:root {
  /* 色彩 */
  --navy-950: #070d1a;
  --navy-900: #0b1424;
  --navy-800: #101d33;
  --navy-700: #16263f;
  --navy-600: #1e3252;

  --primary: #2563eb;          /* 品牌主蓝 */
  --primary-600: #1d4ed8;
  --primary-400: #60a5fa;
  --accent: #0369a1;
  --cyan: #06b6d4;
  --cyan-400: #22d3ee;
  --emerald: #10b981;
  --amber: #f59e0b;
  --rose: #f43f5e;

  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-2: #f1f5f9;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;

  --text: #0f172a;
  --text-2: #475569;
  --text-3: #64748b;
  --on-dark: #f1f5f9;
  --on-dark-2: #94a3b8;
  --on-dark-3: #64748b;

  --destructive: #dc2626;

  /* 字体 */
  --font-sans: "Plus Jakarta Sans", "PingFang SC", "HarmonyOS Sans SC",
    "Source Han Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace;

  /* 字号阶梯 */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;

  /* 圆角 */
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 999px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow: 0 4px 16px rgba(15, 23, 42, 0.07);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
  --shadow-glow: 0 8px 32px rgba(37, 99, 235, 0.28);

  /* 间距 */
  --sp-1: 4px; --sp-2: 8px; --sp-3: 12px; --sp-4: 16px; --sp-5: 24px;
  --sp-6: 32px; --sp-8: 48px; --sp-10: 64px; --sp-12: 80px; --sp-16: 128px;

  /* 容器 */
  --container: 1200px;
  --gutter: 24px;

  /* 动效 */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --t-fast: 150ms;
  --t: 240ms;
  --t-slow: 400ms;

  /* z-index */
  --z-header: 100;
  --z-drawer: 200;
  --z-float: 300;
  --z-toast: 400;
}

/* ---------- 2. 基础 Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 88px;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }
ul, ol { list-style: none; }

::selection { background: rgba(37, 99, 235, 0.18); }

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

h1, h2, h3, h4 {
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
}

/* ---------- 3. 通用工具 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--sp-10); }
.section--tight { padding-block: var(--sp-8); }
.section--dark { background: var(--navy-900); color: var(--on-dark); }
.section--dark h2, .section--dark h3, .section--dark h4 { color: #fff; }
/* 深色区块内的白底卡片：重置标题与文字颜色，避免白字白底 */
.section--dark .step h4 { color: var(--text); }
.section--dark .case-card { background: var(--surface); }
.section--dark .case-card h3 { color: var(--text); }
.section--dark .case-card .cc-sum { color: var(--text-2); }
.section--dark .case-card .cc-link { color: var(--primary); }
.section--dark .case-card .badge {
  background: rgba(37, 99, 235, 0.08);
  color: var(--primary-600);
  border-color: rgba(37, 99, 235, 0.18);
}
.section--dark .case-card .badge--cyan {
  background: rgba(6, 182, 212, 0.08);
  color: #0e7490;
  border-color: rgba(6, 182, 212, 0.22);
}
.section--tint { background: linear-gradient(180deg, #fff 0%, var(--bg) 100%); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--sp-3);
}
.eyebrow::before {
  content: "";
  width: 22px; height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--cyan));
  border-radius: 2px;
}
.section--dark .eyebrow { color: var(--cyan-400); }

.section-head { max-width: 720px; margin-bottom: var(--sp-8); }
.section-head h2 { font-size: clamp(1.75rem, 3.4vw, 2.5rem); margin-bottom: var(--sp-3); }
.section-head p { color: var(--text-2); font-size: var(--text-lg); }
.section--dark .section-head p { color: var(--on-dark-2); }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--center .eyebrow { justify-content: center; }
.section-head--center .eyebrow::before { display: none; }
.section-head--center .eyebrow::after {
  content: ""; width: 22px; height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--primary));
  border-radius: 2px;
}

.text-gradient {
  background: linear-gradient(92deg, #60a5fa 0%, #22d3ee 55%, #a5f3fc 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-size: var(--text-base);
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease),
    background var(--t) var(--ease), color var(--t) var(--ease), border-color var(--t) var(--ease);
  white-space: nowrap;
  touch-action: manipulation;
}
.btn:active { transform: scale(0.97); }
.btn svg { width: 18px; height: 18px; flex: none; }

.btn--primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  box-shadow: var(--shadow-glow);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(37, 99, 235, 0.4); }

.btn--ghost {
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
}
.btn--ghost:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow); }

.btn--white {
  color: var(--navy-900);
  background: #fff;
  box-shadow: 0 8px 28px rgba(255, 255, 255, 0.18);
}
.btn--white:hover { transform: translateY(-2px); box-shadow: 0 12px 36px rgba(255, 255, 255, 0.3); }

.btn--outline-light {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(8px);
}
.btn--outline-light:hover { background: rgba(255, 255, 255, 0.14); border-color: rgba(255, 255, 255, 0.6); transform: translateY(-2px); }

.btn--sm { min-height: 40px; padding: 8px 20px; font-size: var(--text-sm); }

/* 徽章 */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
  background: rgba(37, 99, 235, 0.08);
  color: var(--primary-600);
  border: 1px solid rgba(37, 99, 235, 0.18);
}
.badge--cyan { background: rgba(6, 182, 212, 0.08); color: #0e7490; border-color: rgba(6, 182, 212, 0.22); }
.badge--amber { background: rgba(245, 158, 11, 0.1); color: #b45309; border-color: rgba(245, 158, 11, 0.25); }
.badge--emerald { background: rgba(16, 185, 129, 0.1); color: #047857; border-color: rgba(16, 185, 129, 0.25); }
.badge--rose { background: rgba(244, 63, 94, 0.08); color: #be123c; border-color: rgba(244, 63, 94, 0.22); }
.section--dark .badge { background: rgba(255, 255, 255, 0.08); color: #bfdbfe; border-color: rgba(255, 255, 255, 0.16); }

/* 卡片 */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease),
    border-color var(--t) var(--ease);
}
.card--hover:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(37, 99, 235, 0.35);
}

/* 网格 */
.grid { display: grid; gap: var(--sp-5); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* 图标磁贴 */
.icon-tile {
  width: 52px; height: 52px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(6, 182, 212, 0.08));
  border: 1px solid rgba(37, 99, 235, 0.16);
  color: var(--primary);
  flex: none;
}
.icon-tile svg { width: 26px; height: 26px; }
.icon-tile--cyan { background: linear-gradient(135deg, rgba(6,182,212,.12), rgba(6,182,212,.05)); border-color: rgba(6,182,212,.2); color: #0e7490; }
.icon-tile--amber { background: linear-gradient(135deg, rgba(245,158,11,.12), rgba(245,158,11,.05)); border-color: rgba(245,158,11,.22); color: #b45309; }
.icon-tile--emerald { background: linear-gradient(135deg, rgba(16,185,129,.12), rgba(16,185,129,.05)); border-color: rgba(16,185,129,.2); color: #047857; }
.icon-tile--rose { background: linear-gradient(135deg, rgba(244,63,94,.1), rgba(244,63,94,.05)); border-color: rgba(244,63,94,.2); color: #be123c; }

/* 面包屑 */
.breadcrumb {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px;
  font-size: var(--text-sm); color: var(--on-dark-3);
}
.breadcrumb a { color: var(--on-dark-2); transition: color var(--t-fast); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { opacity: 0.5; }
.breadcrumb .current { color: #fff; font-weight: 600; }

/* 滚动显现 */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: 80ms; }
.reveal-delay-2 { transition-delay: 160ms; }
.reveal-delay-3 { transition-delay: 240ms; }

/* ---------- 4. 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--t) var(--ease), border-color var(--t) var(--ease), background var(--t) var(--ease);
}
.site-header.scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
}

.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--sp-5); height: 72px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; flex: none; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 11px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 60%, #0ea5e9 100%);
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
  position: relative; overflow: hidden;
}
.brand-mark::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(120% 90% at 20% 15%, rgba(255,255,255,.35), transparent 45%);
}
.brand-mark svg { width: 22px; height: 22px; position: relative; z-index: 1; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-size: 1.05rem; font-weight: 800; color: var(--navy-900); letter-spacing: 0.02em; }
.brand-sub { font-size: 0.68rem; font-weight: 700; color: var(--text-3); letter-spacing: 0.22em; text-transform: uppercase; }

.main-nav { display: flex; align-items: center; gap: 2px; }
.nav-item { position: relative; }
/* 悬停桥接：覆盖 链接→下拉菜单 之间的缝隙，防止鼠标移过时菜单消失（Chrome 点不到下拉的根因） */
.nav-item::after {
  content: "";
  position: absolute; left: 0; right: 0; top: 100%;
  height: 12px;
}
.nav-link {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 10px 14px;
  font-size: 0.95rem; font-weight: 600; color: var(--text-2);
  border-radius: var(--radius-sm);
  transition: color var(--t-fast), background var(--t-fast);
}
.nav-link:hover { color: var(--primary); background: rgba(37, 99, 235, 0.06); }
.nav-link.active { color: var(--primary-600); }
.nav-link .chev { width: 14px; height: 14px; transition: transform var(--t) var(--ease); }
.nav-item:hover .chev, .nav-item.open .chev, .nav-item:focus-within .chev { transform: rotate(180deg); }

.nav-dropdown {
  position: absolute; top: calc(100% + 6px); left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 240px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 10px;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity var(--t) var(--ease), transform var(--t) var(--ease);
}
.nav-item:hover .nav-dropdown, .nav-item.open .nav-dropdown, .nav-item:focus-within .nav-dropdown {
  opacity: 1; visibility: visible; pointer-events: auto; transform: translateX(-50%) translateY(0);
}
.nav-dropdown a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 10px;
  font-size: 0.9rem; font-weight: 600; color: var(--text-2);
  transition: background var(--t-fast), color var(--t-fast);
}
.nav-dropdown a:hover { background: rgba(37, 99, 235, 0.06); color: var(--primary-600); }
.nav-dropdown a svg { width: 16px; height: 16px; flex: none; color: var(--primary); }
.nav-dropdown .dd-title { font-size: 0.72rem; font-weight: 700; color: var(--text-3); letter-spacing: 0.08em; padding: 6px 12px 4px; }

.header-actions { display: flex; align-items: center; gap: var(--sp-3); }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--navy-900);
}
.nav-toggle svg { width: 24px; height: 24px; }
.nav-toggle:hover { background: var(--surface-2); }

/* 移动端抽屉 */
.mobile-nav {
  position: fixed; inset: 0; z-index: var(--z-drawer);
  visibility: hidden;
}
.mobile-nav.open { visibility: visible; }
.mobile-nav .scrim {
  position: absolute; inset: 0;
  background: rgba(7, 13, 26, 0.55);
  opacity: 0; transition: opacity var(--t) var(--ease);
  backdrop-filter: blur(2px);
}
.mobile-nav.open .scrim { opacity: 1; }
.mobile-nav .panel {
  position: absolute; top: 0; right: 0; bottom: 0;
  width: min(84vw, 360px);
  background: #fff;
  display: flex; flex-direction: column;
  transform: translateX(100%);
  transition: transform calc(var(--t-slow) * 0.7) var(--ease);
  overflow-y: auto;
}
.mobile-nav.open .panel { transform: none; }
.mobile-nav .panel-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px var(--sp-5); border-bottom: 1px solid var(--border);
}
.mobile-nav .close-btn { width: 44px; height: 44px; display: inline-flex; align-items: center; justify-content: center; border-radius: var(--radius-sm); }
.mobile-nav .close-btn:hover { background: var(--surface-2); }
.mobile-nav .panel nav { padding: var(--sp-4) var(--sp-5) var(--sp-8); flex: 1; }
.mobile-nav .m-link {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0; border-bottom: 1px solid var(--border);
  font-size: 1.02rem; font-weight: 700; color: var(--text);
}
.mobile-nav .m-link.active { color: var(--primary-600); }
.mobile-nav .m-sub { padding: 6px 0 14px; }
.mobile-nav .m-sub a {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 0 9px 14px;
  font-size: 0.92rem; font-weight: 600; color: var(--text-2);
}
.mobile-nav .m-sub a::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--primary); opacity: 0.5; }
.mobile-nav .panel .m-cta { padding: 0 var(--sp-5) calc(var(--sp-8) + env(safe-area-inset-bottom)); }
.mobile-nav .panel .m-cta .btn { width: 100%; }

/* ---------- 5. 首页 Hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(1100px 600px at 78% -10%, rgba(37, 99, 235, 0.28), transparent 60%),
    radial-gradient(800px 500px at 8% 110%, rgba(6, 182, 212, 0.16), transparent 55%),
    linear-gradient(160deg, var(--navy-950) 0%, var(--navy-900) 55%, var(--navy-800) 100%);
  color: var(--on-dark);
  overflow: hidden;
  padding: clamp(64px, 9vw, 120px) 0 clamp(56px, 7vw, 96px);
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    radial-gradient(1.5px 1.5px at 12% 22%, rgba(255,255,255,.5) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 28% 68%, rgba(255,255,255,.35) 50%, transparent 51%),
    radial-gradient(1px 1px at 42% 14%, rgba(255,255,255,.45) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 58% 42%, rgba(255,255,255,.3) 50%, transparent 51%),
    radial-gradient(1px 1px at 66% 84%, rgba(255,255,255,.4) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 82% 30%, rgba(255,255,255,.35) 50%, transparent 51%),
    radial-gradient(1px 1px at 91% 64%, rgba(255,255,255,.4) 50%, transparent 51%),
    radial-gradient(1px 1px at 18% 86%, rgba(255,255,255,.3) 50%, transparent 51%);
  animation: twinkle 5s ease-in-out infinite alternate;
  pointer-events: none;
}
@keyframes twinkle {
  0% { opacity: 0.55; }
  100% { opacity: 1; }
}
.hero::after {
  content: "";
  position: absolute;
  width: 140%; height: 320px;
  left: -20%; bottom: -180px;
  background: radial-gradient(50% 100% at 50% 100%, rgba(6, 182, 212, 0.14), transparent 70%);
  filter: blur(30px);
  pointer-events: none;
}

.hero-inner {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(96, 165, 250, 0.35);
  background: rgba(37, 99, 235, 0.12);
  color: #bfdbfe;
  font-size: var(--text-sm); font-weight: 600;
  margin-bottom: var(--sp-5);
  backdrop-filter: blur(6px);
}
.hero-badge .pulse-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan-400);
  box-shadow: 0 0 0 0 rgba(34, 211, 238, 0.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(34, 211, 238, 0.55); }
  70% { box-shadow: 0 0 0 9px rgba(34, 211, 238, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 211, 238, 0); }
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1.16;
  margin-bottom: var(--sp-4);
}
.hero .hero-sub {
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  font-weight: 700;
  color: #dbeafe;
  margin-bottom: var(--sp-4);
}
.hero .hero-desc {
  font-size: var(--text-lg);
  color: var(--on-dark-2);
  max-width: 34em;
  margin-bottom: var(--sp-6);
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: var(--sp-4); margin-bottom: var(--sp-8); }
.hero-trust {
  display: flex; flex-wrap: wrap; align-items: center; gap: var(--sp-5);
  color: var(--on-dark-3); font-size: var(--text-sm);
}
.hero-trust span { display: inline-flex; align-items: center; gap: 6px; }
.hero-trust svg { width: 15px; height: 15px; color: var(--cyan-400); }

/* 首页 Hero 星座产品图 */
.hero-visual { position: relative; }
.hero-constellation {
  position: relative;
  aspect-ratio: 1.05;
  display: grid;
  place-items: center;
}
.hero-constellation svg.lines {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
}
.hero-constellation .c-node {
  position: absolute;
  width: 164px;
  padding: 14px 16px;
  border-radius: var(--radius-lg);
  background: rgba(16, 29, 51, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  transition: transform var(--t) var(--ease), border-color var(--t) var(--ease);
  animation: float 6s ease-in-out infinite;
}
.hero-constellation .c-node:hover { transform: translateY(-4px); border-color: rgba(96, 165, 250, 0.55); }
.hero-constellation .c-node:nth-child(3) { animation-delay: 1.2s; }
.hero-constellation .c-node:nth-child(4) { animation-delay: 2.1s; }
.hero-constellation .c-node:nth-child(5) { animation-delay: 0.6s; }
.hero-constellation .c-node:nth-child(6) { animation-delay: 1.7s; }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-7px); }
}
.c-node .c-name {
  font-size: 1.02rem; font-weight: 800; color: #fff;
  display: flex; align-items: center; gap: 6px;
  white-space: nowrap;
}
.c-node .c-name em {
  font-style: normal; font-size: 0.62rem; font-weight: 700;
  letter-spacing: 0.08em; color: var(--on-dark-3);
  flex: none; white-space: nowrap;
}
.c-node .c-tag { font-size: 0.76rem; color: var(--on-dark-2); margin-top: 2px; }
.c-node .c-dot {
  width: 9px; height: 9px; border-radius: 50%; flex: none;
  box-shadow: 0 0 12px currentColor;
}
.c-node--n1 { top: 2%; left: 4%; --nc: #60a5fa; }
.c-node--n2 { top: 8%; right: 0; --nc: #22d3ee; }
.c-node--n3 { bottom: 14%; right: 6%; --nc: #fbbf24; }
.c-node--n4 { bottom: 0; left: 16%; --nc: #fb7185; }
.c-node--n5 { left: 0; top: 44%; --nc: #34d399; }
.c-node .c-dot { color: var(--nc); background: var(--nc); }

/* ---------- 6. 数据统计条 ---------- */
.stats-band {
  position: relative;
  z-index: 2;
  margin-top: -34px;
}
.stats-band .stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.stats .stat {
  padding: var(--sp-6) var(--sp-5);
  text-align: center;
  position: relative;
}
.stats .stat + .stat { border-left: 1px solid var(--border); }
.stat-num {
  font-size: clamp(2rem, 4vw, 2.9rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--navy-900);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.stat-num .suffix { color: var(--primary); }
.stat-label { font-size: var(--text-sm); color: var(--text-3); font-weight: 600; margin-top: 4px; }

/* ---------- 7. 产品卡片（首页/总览） ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-5); }
.product-card {
  --pc: var(--primary);
  position: relative;
  padding: var(--sp-6);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease), border-color var(--t) var(--ease);
}
.product-card::before {
  content: "";
  position: absolute; inset: 0 0 auto 0; height: 3px;
  background: linear-gradient(90deg, var(--pc), transparent 80%);
  opacity: 0.65;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: color-mix(in srgb, var(--pc) 40%, var(--border));
}
.product-card .pc-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--sp-4); }
.product-card .pc-icon {
  width: 50px; height: 50px; border-radius: 13px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--pc);
  background: color-mix(in srgb, var(--pc) 10%, #fff);
  border: 1px solid color-mix(in srgb, var(--pc) 22%, transparent);
}
.product-card .pc-icon svg { width: 26px; height: 26px; }
.product-card .pc-sn { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.16em; color: var(--text-3); }
.product-card h3 { font-size: 1.28rem; margin-bottom: 2px; }
.product-card h3 em { font-style: normal; font-size: 0.78rem; font-weight: 700; color: var(--text-3); letter-spacing: 0.1em; margin-left: 6px; }
.product-card .pc-pos { font-size: var(--text-sm); font-weight: 700; color: var(--pc); margin-bottom: var(--sp-3); }
.product-card .pc-desc { font-size: 0.92rem; color: var(--text-2); margin-bottom: var(--sp-5); flex: 1; }
.product-card .pc-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: var(--text-sm); font-weight: 700; color: var(--pc);
}
.product-card .pc-link svg { width: 16px; height: 16px; transition: transform var(--t-fast); }
.product-card .pc-link:hover svg { transform: translateX(4px); }

/* 系列价值横幅 */
.series-banner {
  background:
    radial-gradient(900px 300px at 20% 0%, rgba(37, 99, 235, 0.22), transparent 55%),
    radial-gradient(700px 280px at 90% 100%, rgba(6, 182, 212, 0.16), transparent 55%),
    var(--navy-900);
  border-radius: var(--radius-xl);
  padding: clamp(28px, 4vw, 48px);
  color: var(--on-dark);
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.series-banner .sb-line {
  font-size: clamp(1.15rem, 2.4vw, 1.55rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.6;
  margin-bottom: var(--sp-3);
}
.series-banner .sb-line .hl { color: var(--cyan-400); }
.series-banner p { color: var(--on-dark-2); max-width: 640px; margin: 0 auto var(--sp-5); }

/* ---------- 8. 服务卡片 ---------- */
.service-card {
  padding: var(--sp-6);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.service-card .icon-tile { margin-bottom: var(--sp-4); }
.service-card h3 { font-size: 1.2rem; margin-bottom: var(--sp-2); }
.service-card p { font-size: 0.92rem; color: var(--text-2); margin-bottom: var(--sp-4); }
.service-card .svc-points li {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 0.88rem; color: var(--text-2);
  padding: 5px 0;
}
.service-card .svc-points svg { width: 15px; height: 15px; color: var(--emerald); flex: none; margin-top: 4px; }

/* 服务流程步骤 */
.process-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--sp-5); counter-reset: step; }
.process-steps--4 { grid-template-columns: repeat(4, 1fr); }
.step {
  position: relative;
  padding: var(--sp-5) var(--sp-4);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  counter-increment: step;
}
.step::before {
  content: counter(step, decimal-leading-zero);
  font-size: 1.5rem; font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1.4px var(--primary);
  display: block;
  margin-bottom: var(--sp-3);
}
.step h4 { font-size: 1rem; margin-bottom: var(--sp-2); }
.step p { font-size: 0.86rem; color: var(--text-2); }
.step .step-line {
  position: absolute; top: 50%; right: -var(--sp-5);
  width: var(--sp-5); height: 2px;
  background: linear-gradient(90deg, var(--border-strong), transparent);
}
.step:last-child .step-line { display: none; }

/* ---------- 9. 行业卡片 ---------- */
.industry-card {
  position: relative;
  padding: var(--sp-6);
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.industry-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.industry-card .ic-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--sp-4); }
.industry-card .ic-icon {
  width: 50px; height: 50px; border-radius: 13px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--navy-900); color: var(--cyan-400);
}
.industry-card .ic-icon svg { width: 26px; height: 26px; }
.industry-card h3 { font-size: 1.22rem; margin-bottom: var(--sp-2); }
.industry-card .ic-desc { font-size: 0.92rem; color: var(--text-2); margin-bottom: var(--sp-5); }
.industry-card .ic-data {
  display: flex; gap: var(--sp-5);
  padding-top: var(--sp-4);
  border-top: 1px dashed var(--border);
}
.industry-card .ic-data .d { font-size: 1.15rem; font-weight: 800; color: var(--navy-900); }
.industry-card .ic-data .d small { display: block; font-size: 0.74rem; font-weight: 600; color: var(--text-3); margin-top: 2px; }

/* 首页四列窄卡片：紧凑字号 + 数据 2×2 网格 */
.industry-card--home { padding: var(--sp-5); }
.industry-card--home .ic-head { margin-bottom: var(--sp-3); }
.industry-card--home .ic-icon { width: 44px; height: 44px; border-radius: 11px; }
.industry-card--home .ic-icon svg { width: 22px; height: 22px; }
.industry-card--home h3 { font-size: 1.08rem; }
.industry-card--home .ic-desc {
  font-size: 0.86rem; line-height: 1.65;
  margin-bottom: var(--sp-4);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.industry-card--home .ic-data {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 8px;
  padding-top: var(--sp-4);
}
.industry-card--home .ic-data .d {
  font-size: 1.02rem;
  line-height: 1.2;
}
.industry-card--home .ic-data .d small {
  font-size: 0.68rem;
  line-height: 1.45;
  margin-top: 3px;
  white-space: normal;
}

/* ---------- 10. 案例卡片 ---------- */
.case-card {
  padding: var(--sp-6);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex; flex-direction: column;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease), border-color var(--t) var(--ease);
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(37, 99, 235, 0.3); }
.case-card .cc-meta { display: flex; align-items: center; gap: 10px; margin-bottom: var(--sp-4); }
.case-card .cc-meta .badge { padding: 4px 12px; }
.case-card h3 { font-size: 1.15rem; margin-bottom: var(--sp-2); }
.case-card .cc-sum { font-size: 0.9rem; color: var(--text-2); margin-bottom: var(--sp-4); flex: 1; }
.case-card .cc-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-3); margin-bottom: var(--sp-5); }
.case-card .cc-metrics .m {
  text-align: center;
  padding: var(--sp-3) var(--sp-2);
  background: var(--surface-2);
  border-radius: var(--radius);
}
.case-card .cc-metrics .m b { display: block; font-size: 1.06rem; font-weight: 800; color: var(--navy-900); font-variant-numeric: tabular-nums; }
.case-card .cc-metrics .m span { font-size: 0.7rem; color: var(--text-3); font-weight: 600; }
.case-card .cc-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: var(--text-sm); font-weight: 700; color: var(--primary);
}
.case-card .cc-link svg { width: 15px; height: 15px; transition: transform var(--t-fast); }
.case-card .cc-link:hover svg { transform: translateX(4px); }

/* 筛选标签 */
.filter-tabs { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: var(--sp-8); }
.filter-tab {
  padding: 9px 22px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  font-size: var(--text-sm); font-weight: 700; color: var(--text-2);
  transition: all var(--t-fast);
}
.filter-tab:hover { border-color: var(--primary); color: var(--primary); }
.filter-tab.active {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; border-color: transparent;
  box-shadow: var(--shadow-glow);
}
.case-item { transition: opacity var(--t) var(--ease), transform var(--t) var(--ease); }
.case-item.hide { display: none; }

/* 证言 */
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-5); }
.testimonial {
  padding: var(--sp-6);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex; flex-direction: column;
}
.testimonial .t-quote-icon { width: 36px; height: 36px; color: rgba(37, 99, 235, 0.35); margin-bottom: var(--sp-4); }
.testimonial blockquote { font-size: 0.95rem; color: var(--text); flex: 1; margin-bottom: var(--sp-5); line-height: 1.8; }
.testimonial .t-person { display: flex; align-items: center; gap: 12px; }
.testimonial .t-avatar {
  width: 42px; height: 42px; border-radius: 50%; flex: none;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: var(--text-sm); font-weight: 800; color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
}
.testimonial .t-name { font-size: 0.92rem; font-weight: 700; }
.testimonial .t-role { font-size: 0.78rem; color: var(--text-3); }
.section--dark .testimonial { background: rgba(255,255,255,0.04); border-color: rgba(255,255,255,0.1); }
.section--dark .testimonial blockquote { color: var(--on-dark); }
.section--dark .testimonial .t-role { color: var(--on-dark-3); }

/* Logo 墙 */
.logo-wall {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: var(--sp-4) var(--sp-6);
  padding: var(--sp-6);
}
.logo-wall .lw-item {
  height: 44px;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 0 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text-3);
  font-size: 0.98rem; font-weight: 800;
  letter-spacing: 0.05em;
  opacity: 0.85;
  transition: opacity var(--t-fast), transform var(--t-fast);
}
.logo-wall .lw-item:hover { opacity: 1; transform: translateY(-2px); }
.logo-wall .lw-item svg { width: 18px; height: 18px; }
.section--dark .logo-wall .lw-item { background: rgba(255,255,255,0.05); border-color: rgba(255,255,255,0.12); color: var(--on-dark-2); }

/* ---------- 11. 底部 CTA ---------- */
.cta-band {
  position: relative;
  background:
    radial-gradient(800px 320px at 15% 0%, rgba(37, 99, 235, 0.3), transparent 55%),
    radial-gradient(700px 300px at 90% 100%, rgba(6, 182, 212, 0.2), transparent 55%),
    var(--navy-900);
  border-radius: var(--radius-xl);
  padding: clamp(40px, 6vw, 72px) clamp(24px, 5vw, 64px);
  text-align: center;
  color: var(--on-dark);
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute; inset: 0;
  background-image: radial-gradient(1.5px 1.5px at 20% 30%, rgba(255,255,255,.4) 50%, transparent 51%),
    radial-gradient(1px 1px at 70% 60%, rgba(255,255,255,.3) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 85% 25%, rgba(255,255,255,.35) 50%, transparent 51%),
    radial-gradient(1px 1px at 45% 80%, rgba(255,255,255,.3) 50%, transparent 51%);
  pointer-events: none;
}
.cta-band > * { position: relative; }
.cta-band h2 { color: #fff; font-size: clamp(1.7rem, 3.4vw, 2.6rem); margin-bottom: var(--sp-3); }
.cta-band p { color: var(--on-dark-2); font-size: var(--text-lg); margin-bottom: var(--sp-6); max-width: 560px; margin-inline: auto; }
.cta-band .cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--sp-4); }
.cta-band .cta-note { margin-top: var(--sp-5); font-size: var(--text-sm); color: var(--on-dark-3); }

/* ---------- 12. 页脚 ---------- */
.site-footer {
  background: var(--navy-950);
  color: var(--on-dark-2);
  padding-top: var(--sp-10);
  margin-top: var(--sp-10);
  font-size: 0.9rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: var(--sp-8);
  padding-bottom: var(--sp-8);
}
.footer-brand .brand-name { color: #fff; font-size: 1.1rem; }
.footer-brand p { margin: var(--sp-4) 0; color: var(--on-dark-3); max-width: 30em; font-size: 0.88rem; line-height: 1.8; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 38px; height: 38px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--on-dark-2);
  transition: all var(--t-fast);
}
.footer-social a:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-2px); }
.footer-social svg { width: 17px; height: 17px; }

.footer-col h4 {
  color: #fff; font-size: 0.95rem; margin-bottom: var(--sp-4);
  letter-spacing: 0.04em;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: var(--on-dark-3); transition: color var(--t-fast); }
.footer-col ul a:hover { color: #fff; }
.footer-col .f-contact li { display: flex; align-items: flex-start; gap: 10px; color: var(--on-dark-3); margin-bottom: 12px; }
.footer-col .f-contact svg { width: 16px; height: 16px; flex: none; margin-top: 4px; color: var(--primary-400); }
.footer-col .f-contact a:hover { color: #fff; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: var(--sp-5) 0;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  column-gap: 14px; row-gap: 6px;
  font-size: 0.8rem; color: var(--on-dark-3);
}
.footer-bottom a { color: var(--on-dark-3); white-space: nowrap; transition: color var(--t-fast); }
.footer-bottom a:hover { color: #fff; }
/* 备案组（ICP + 图标 + 公安）绑定为不可断整体：宽度不足时整组换行，绝不拆散 */
.fb-filings {
  display: inline-flex; align-items: center; gap: 8px;
  white-space: nowrap;
}
.fb-filings .beian-link img { display: inline-block; height: 15px; width: auto; margin-right: 6px; vertical-align: -3px; }
.fb-links { display: inline-flex; align-items: center; gap: 10px; white-space: nowrap; }
/* 极窄屏：备案组整体放不下时，允许 ICP 与公安各自成行（各自内部仍不拆） */
@media (max-width: 520px) {
  .footer-bottom { justify-content: flex-start; }
  .fb-filings { white-space: normal; flex-wrap: wrap; }
}

/* ---------- 13. 内页 Hero ---------- */
.page-hero {
  position: relative;
  background:
    radial-gradient(900px 420px at 85% -20%, rgba(37, 99, 235, 0.25), transparent 60%),
    radial-gradient(600px 320px at 0% 120%, rgba(6, 182, 212, 0.14), transparent 55%),
    linear-gradient(160deg, var(--navy-950), var(--navy-800));
  color: var(--on-dark);
  padding: clamp(48px, 7vw, 88px) 0 clamp(40px, 5vw, 64px);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    radial-gradient(1.5px 1.5px at 15% 30%, rgba(255,255,255,.4) 50%, transparent 51%),
    radial-gradient(1px 1px at 65% 70%, rgba(255,255,255,.3) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 88% 35%, rgba(255,255,255,.35) 50%, transparent 51%);
  pointer-events: none;
}
.page-hero .ph-inner { position: relative; }
.page-hero h1 { color: #fff; font-size: clamp(1.9rem, 4.2vw, 2.8rem); margin: var(--sp-4) 0 var(--sp-3); }
.page-hero .ph-lead { font-size: var(--text-lg); color: var(--on-dark-2); max-width: 40em; }
.page-hero .ph-meta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: var(--sp-5); }

/* 产品页专用 hero 变体 */
.page-hero--product { --pc: var(--primary); }
.page-hero--product .ph-product-line { display: flex; align-items: center; gap: 14px; margin-bottom: var(--sp-4); }
.page-hero--product .ph-picon {
  width: 60px; height: 60px; border-radius: 16px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--pc);
  background: color-mix(in srgb, var(--pc) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--pc) 35%, transparent);
  box-shadow: 0 0 32px color-mix(in srgb, var(--pc) 30%, transparent);
}
.page-hero--product .ph-picon svg { width: 30px; height: 30px; }
.page-hero--product .ph-pname { font-size: clamp(1.7rem, 3.6vw, 2.5rem); font-weight: 800; color: #fff; line-height: 1.15; }
.page-hero--product .ph-pname em { font-style: normal; display: block; font-size: 0.85rem; font-weight: 700; letter-spacing: 0.28em; color: var(--pc); margin-top: 4px; }
.page-hero--product .ph-lead { margin-top: var(--sp-4); }

/* ---------- 14. 功能特性网格 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-5); }
.feature-item {
  display: flex; gap: var(--sp-4);
  padding: var(--sp-5);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.feature-item:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.feature-item .icon-tile { width: 46px; height: 46px; }
.feature-item .icon-tile svg { width: 23px; height: 23px; }
.feature-item h3 { font-size: 1.05rem; margin-bottom: 6px; }
.feature-item p { font-size: 0.9rem; color: var(--text-2); }

/* ---------- 15. 技术架构图 ---------- */
.arch-wrap { background: var(--navy-900); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius-xl); padding: clamp(20px, 3vw, 40px); overflow-x: auto; }
.arch {
  min-width: 640px;
  display: flex; flex-direction: column; gap: 0;
}
.arch-layer {
  position: relative;
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  margin-bottom: 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
}
.arch-layer::after {
  content: "";
  position: absolute; left: 50%; bottom: -14px;
  transform: translateX(-50%);
  border-left: 7px solid transparent; border-right: 7px solid transparent;
  border-top: 14px solid rgba(255, 255, 255, 0.14);
}
.arch-layer--hl { border-color: rgba(34, 211, 238, 0.35); background: rgba(6, 182, 212, 0.07); }
.arch-layer--hl .al-title svg { color: var(--cyan-400); }
.arch-layer:last-child { margin-bottom: 0; }
.arch-layer:last-child::after { display: none; }
.arch-layer .al-title {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.9rem; font-weight: 800; color: #fff;
  margin-bottom: var(--sp-4);
  letter-spacing: 0.06em;
}
.arch-layer .al-title svg { width: 18px; height: 18px; color: var(--cyan-400); }
.arch-layer .al-title span { font-size: 0.72rem; color: var(--on-dark-3); font-weight: 600; letter-spacing: 0.1em; margin-left: auto; }
.arch-nodes { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.arch-node {
  padding: 12px 14px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.8rem; font-weight: 600; color: var(--on-dark);
  text-align: center;
  transition: all var(--t-fast);
}
.arch-node:hover { border-color: rgba(96, 165, 250, 0.5); background: rgba(37, 99, 235, 0.14); }
.arch-node small { display: block; font-size: 0.68rem; color: var(--on-dark-3); font-weight: 500; margin-top: 2px; }
.arch-node--hl { border-color: rgba(34, 211, 238, 0.4); background: rgba(6, 182, 212, 0.1); }

/* ---------- 16. 部署对比 ---------- */
.deploy-compare { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-5); }
.deploy-card {
  padding: var(--sp-6);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.deploy-card--hl { border: 1.5px solid rgba(37, 99, 235, 0.4); box-shadow: var(--shadow); position: relative; }
.deploy-card--hl::before {
  content: "推荐";
  position: absolute; top: -13px; right: 24px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 0.7rem; font-weight: 800;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  letter-spacing: 0.08em;
}
.deploy-card h3 { font-size: 1.15rem; display: flex; align-items: center; gap: 10px; margin-bottom: var(--sp-2); }
.deploy-card h3 .icon-tile { width: 40px; height: 40px; }
.deploy-card .dc-price { font-size: var(--text-sm); color: var(--text-3); margin-bottom: var(--sp-4); }
.deploy-card ul li {
  display: flex; align-items: flex-start; gap: 8px;
  padding: 7px 0;
  font-size: 0.92rem; color: var(--text-2);
}
.deploy-card ul svg { width: 16px; height: 16px; color: var(--emerald); flex: none; margin-top: 5px; }

/* ---------- 17. 适用场景 ---------- */
.scenario-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-4); }
.scenario-item {
  display: flex; align-items: flex-start; gap: var(--sp-4);
  padding: var(--sp-5);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.scenario-item .s-no {
  width: 40px; height: 40px; flex: none;
  border-radius: 11px;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: var(--text-sm);
  background: rgba(37, 99, 235, 0.08); color: var(--primary-600);
  border: 1px solid rgba(37, 99, 235, 0.18);
}
.scenario-item h4 { font-size: 1rem; margin-bottom: 4px; }
.scenario-item p { font-size: 0.88rem; color: var(--text-2); }

/* ---------- 18. FAQ 手风琴 ---------- */
.faq-list { max-width: 820px; margin-inline: auto; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--sp-3);
  overflow: hidden;
  transition: border-color var(--t-fast);
}
.faq-item.open { border-color: rgba(37, 99, 235, 0.4); }
.faq-q {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-4);
  padding: 20px 24px;
  font-size: 1rem; font-weight: 700; color: var(--text);
  text-align: left;
}
.faq-q .faq-icon {
  width: 30px; height: 30px; flex: none;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--surface-2);
  color: var(--text-3);
  transition: all var(--t) var(--ease);
}
.faq-q .faq-icon svg { width: 15px; height: 15px; }
.faq-item.open .faq-icon { background: var(--primary); color: #fff; transform: rotate(135deg); }
.faq-a {
  max-height: 0; overflow: hidden;
  transition: max-height var(--t-slow) var(--ease);
}
.faq-a-inner { padding: 0 24px 22px; color: var(--text-2); font-size: 0.95rem; }

/* ---------- 19. 时间线 ---------- */
.timeline { position: relative; max-width: 860px; margin-inline: auto; padding-left: 34px; }
.timeline::before {
  content: "";
  position: absolute; left: 9px; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--cyan), transparent);
  border-radius: 2px;
}
.tl-item { position: relative; padding-bottom: var(--sp-6); }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute; left: -30px; top: 8px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--surface);
  border: 3px solid var(--primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}
.tl-item .tl-year {
  font-size: var(--text-sm); font-weight: 800; color: var(--primary-600);
  letter-spacing: 0.06em; margin-bottom: 4px;
}
.tl-item h4 { font-size: 1.08rem; margin-bottom: 4px; }
.tl-item p { font-size: 0.92rem; color: var(--text-2); max-width: 46em; }

/* ---------- 20. 团队 / 荣誉 / 伙伴 ---------- */
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-5); }
.team-card {
  text-align: center;
  padding: var(--sp-6) var(--sp-4);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.team-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.team-avatar {
  width: 84px; height: 84px;
  margin: 0 auto var(--sp-4);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; font-weight: 800; color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  position: relative;
}
.team-card:nth-child(2) .team-avatar { background: linear-gradient(135deg, #0ea5e9, var(--cyan)); }
.team-card:nth-child(3) .team-avatar { background: linear-gradient(135deg, var(--accent), var(--emerald)); }
.team-card:nth-child(4) .team-avatar { background: linear-gradient(135deg, var(--navy-600), var(--primary)); }
.team-card h3 { font-size: 1.05rem; }
.team-card .t-role { font-size: var(--text-sm); color: var(--primary-600); font-weight: 700; margin: 2px 0 8px; }
.team-card p { font-size: 0.84rem; color: var(--text-2); }

.honor-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-5); }
.honor-card {
  text-align: center;
  padding: var(--sp-6) var(--sp-4);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.honor-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.honor-card .h-icon {
  width: 56px; height: 56px; margin: 0 auto var(--sp-4);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--amber);
  background: rgba(245, 158, 11, 0.1);
  border: 1px dashed rgba(245, 158, 11, 0.4);
}
.honor-card .h-icon svg { width: 26px; height: 26px; }
.honor-card h3 { font-size: 1rem; margin-bottom: 4px; }
.honor-card p { font-size: 0.82rem; color: var(--text-3); }

/* ---------- 21. 仪表盘可视化（行业/产品页） ---------- */
.console {
  background:
    radial-gradient(600px 240px at 90% 0%, rgba(37, 99, 235, 0.18), transparent 60%),
    var(--navy-900);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: clamp(18px, 3vw, 32px);
  color: var(--on-dark);
  box-shadow: 0 24px 60px rgba(7, 13, 26, 0.45);
  font-family: var(--font-mono);
}
.console .con-head {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: var(--sp-4);
  margin-bottom: var(--sp-5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.console .con-title { display: flex; align-items: center; gap: 10px; font-size: var(--text-sm); font-weight: 700; color: var(--on-dark); letter-spacing: 0.04em; }
.console .con-title .dots { display: flex; gap: 6px; }
.console .con-title .dots i { width: 9px; height: 9px; border-radius: 50%; background: rgba(255,255,255,0.16); }
.console .con-title .dots i:nth-child(1) { background: #f87171; }
.console .con-title .dots i:nth-child(2) { background: #fbbf24; }
.console .con-title .dots i:nth-child(3) { background: #34d399; }
.console .con-status { display: inline-flex; align-items: center; gap: 7px; font-size: 0.72rem; color: #6ee7b7; }
.console .con-status i { width: 7px; height: 7px; border-radius: 50%; background: #34d399; box-shadow: 0 0 10px #34d399; animation: pulse 2s infinite; }
.con-kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: var(--sp-5); }
.con-kpi {
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
}
.con-kpi .k-label { font-size: 0.68rem; color: var(--on-dark-3); letter-spacing: 0.08em; margin-bottom: 6px; }
.con-kpi .k-value { font-size: 1.3rem; font-weight: 800; color: #fff; font-variant-numeric: tabular-nums; line-height: 1.1; }
.con-kpi .k-value small { font-size: 0.75rem; color: var(--on-dark-3); font-weight: 600; }
.con-kpi .k-trend { font-size: 0.68rem; margin-top: 4px; }
.k-trend.up { color: #34d399; }
.k-trend.down { color: #fbbf24; }
.con-charts { display: grid; grid-template-columns: 1.35fr 1fr; gap: 12px; }
.con-panel {
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: var(--sp-4);
}
.con-panel h5 { font-size: 0.7rem; color: var(--on-dark-3); letter-spacing: 0.1em; margin-bottom: var(--sp-3); font-weight: 700; }
.bars { display: flex; align-items: flex-end; gap: 8px; height: 120px; }
.bars .bar {
  flex: 1;
  border-radius: 4px 4px 0 0;
  background: linear-gradient(180deg, var(--cyan-400), rgba(6, 182, 212, 0.25));
  position: relative;
  transition: height 0.6s var(--ease);
  animation: bar-grow 0.9s var(--ease) backwards;
}
@keyframes bar-grow { from { height: 0 !important; } }
.bars .bar:nth-child(odd) { background: linear-gradient(180deg, #60a5fa, rgba(37, 99, 235, 0.3)); }
.bars .bar:hover::after {
  content: attr(data-v);
  position: absolute; top: -26px; left: 50%; transform: translateX(-50%);
  font-size: 0.66rem; color: #fff;
  background: rgba(7, 13, 26, 0.9);
  padding: 3px 8px; border-radius: 6px;
  white-space: nowrap;
}
.spark { display: flex; align-items: flex-end; gap: 5px; height: 90px; padding-top: 8px; }
.spark i {
  flex: 1; border-radius: 3px 3px 0 0;
  background: linear-gradient(180deg, #34d399, rgba(16, 185, 129, 0.25));
  animation: bar-grow 0.9s var(--ease) backwards;
}
.con-list { display: flex; flex-direction: column; gap: 8px; margin-top: var(--sp-3); }
.con-row {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 0.72rem; color: var(--on-dark-2);
  padding: 8px 10px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 8px;
}
.con-row b { color: #fff; font-weight: 700; }
.con-row .ok { color: #34d399; }
.con-row .warn { color: #fbbf24; }

/* 前后对比表（案例详情） */
.before-after { display: grid; grid-template-columns: 1fr auto 1fr; gap: var(--sp-4); align-items: stretch; }
.ba-col {
  padding: var(--sp-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}
.ba-col--before { background: var(--surface-2); }
.ba-col--after {
  background: linear-gradient(160deg, rgba(37, 99, 235, 0.05), rgba(6, 182, 212, 0.05));
  border-color: rgba(37, 99, 235, 0.3);
}
.ba-col h4 { font-size: 0.95rem; margin-bottom: var(--sp-4); display: flex; align-items: center; gap: 8px; }
.ba-col--before h4 { color: var(--text-3); }
.ba-col--after h4 { color: var(--primary-600); }
.ba-col ul li {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 0.88rem; color: var(--text-2);
  padding: 5px 0;
}
.ba-col--before ul li svg { color: var(--text-3); }
.ba-col--after ul li svg { color: var(--emerald); }
.ba-col ul svg { width: 15px; height: 15px; flex: none; margin-top: 5px; }
.ba-vs {
  align-self: center;
  width: 44px; height: 44px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  font-size: var(--text-xs); font-weight: 800; color: var(--text-3);
}

/* ---------- 22. 联系表单 ---------- */
.contact-layout { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: var(--sp-8); align-items: start; }
.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: clamp(24px, 4vw, 44px);
  box-shadow: var(--shadow);
}
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-4); }
.form-field { display: flex; flex-direction: column; gap: 7px; }
.form-field--full { grid-column: 1 / -1; }
.form-field label { font-size: var(--text-sm); font-weight: 700; color: var(--text); }
.form-field label .req { color: var(--destructive); }
.form-field .hint { font-size: 0.78rem; color: var(--text-3); }
.form-field input, .form-field select, .form-field textarea {
  width: 100%;
  min-height: 48px;
  padding: 11px 16px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.form-field textarea { min-height: 130px; resize: vertical; line-height: 1.6; }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.14);
}
.form-field input::placeholder, .form-field textarea::placeholder { color: var(--text-3); }
.form-field.invalid input, .form-field.invalid select, .form-field.invalid textarea {
  border-color: var(--destructive);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}
.form-field .field-error {
  display: none;
  font-size: 0.78rem; font-weight: 600; color: var(--destructive);
}
.form-field.invalid .field-error { display: block; }
.form-card .btn { width: 100%; }
.form-note { font-size: 0.78rem; color: var(--text-3); text-align: center; margin-top: var(--sp-4); }

.contact-info-card {
  background: var(--navy-900);
  border-radius: var(--radius-xl);
  padding: clamp(24px, 3.5vw, 40px);
  color: var(--on-dark);
  position: relative; overflow: hidden;
}
.contact-info-card::before {
  content: "";
  position: absolute; inset: 0;
  background-image: radial-gradient(1.5px 1.5px at 20% 20%, rgba(255,255,255,.4) 50%, transparent 51%),
    radial-gradient(1px 1px at 80% 60%, rgba(255,255,255,.3) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 60% 15%, rgba(255,255,255,.35) 50%, transparent 51%);
  pointer-events: none;
}
.contact-info-card > * { position: relative; }
.contact-info-card h3 { color: #fff; font-size: 1.3rem; margin-bottom: var(--sp-3); }
.contact-info-card > p { color: var(--on-dark-2); font-size: 0.92rem; margin-bottom: var(--sp-6); }
.ci-list li { display: flex; align-items: flex-start; gap: 14px; padding: var(--sp-4) 0; border-bottom: 1px solid rgba(255,255,255,0.08); }
.ci-list li:last-child { border-bottom: none; }
.ci-list .ci-icon {
  width: 44px; height: 44px; flex: none;
  border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(37, 99, 235, 0.2);
  border: 1px solid rgba(96, 165, 250, 0.3);
  color: #93c5fd;
}
.ci-list .ci-icon svg { width: 20px; height: 20px; }
.ci-list .ci-body b { display: block; color: #fff; font-size: 0.95rem; margin-bottom: 2px; }
.ci-list .ci-body span, .ci-list .ci-body a { color: var(--on-dark-2); font-size: 0.88rem; }
.ci-list .ci-body a:hover { color: #fff; }

.map-head {
  display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between;
  gap: var(--sp-4);
  margin-bottom: var(--sp-5);
}
.map-head .eyebrow { margin-bottom: var(--sp-2); }
.map-head .btn svg { width: 16px; height: 16px; }
.map-frame {
  margin-top: 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  position: relative;
  background: var(--surface-2);
}
.map-frame iframe { width: 100%; height: 380px; border: 0; display: block; position: relative; z-index: 1; }
.map-fallback {
  position: absolute; inset: 0;
  z-index: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  color: var(--text-3); font-size: var(--text-sm);
  background:
    repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(148,163,184,.18) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(148,163,184,.18) 40px),
    var(--surface-2);
}
.map-fallback svg { width: 34px; height: 34px; color: var(--primary); }

/* ---------- 23. 悬浮元素 ---------- */
.float-stack {
  position: fixed;
  right: 22px; bottom: 22px;
  z-index: var(--z-float);
  display: flex; flex-direction: column; gap: 12px;
}
.float-btn {
  width: 52px; height: 52px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  color: var(--text-2);
  box-shadow: var(--shadow-lg);
  transition: all var(--t) var(--ease);
  opacity: 0; transform: translateY(12px); pointer-events: none;
}
.float-btn.show { opacity: 1; transform: none; pointer-events: auto; }
.float-btn:hover { color: var(--primary); transform: translateY(-3px); }
.float-btn svg { width: 22px; height: 22px; }
.float-btn--primary {
  width: 60px; height: 60px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; border: none;
  box-shadow: var(--shadow-glow);
}
.float-btn--primary:hover { color: #fff; transform: translateY(-3px) scale(1.04); }
.float-btn--primary .icon-chat { animation: pulse-ring 2.4s infinite; }
@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.45); }
  70% { box-shadow: 0 0 0 14px rgba(37, 99, 235, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0); }
}

/* 移动端底部转化条 */
.mobile-cta-bar {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: var(--z-float);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  padding: 10px var(--gutter) calc(10px + env(safe-area-inset-bottom));
  gap: 10px;
}
.mobile-cta-bar a { flex: 1; min-height: 46px; }
.mobile-cta-bar .btn--ghost { border-color: var(--border-strong); }

/* ---------- 24. 其他内容组件 ---------- */
/* 分点列表 */
.check-list li { display: flex; align-items: flex-start; gap: 10px; padding: 6px 0; color: var(--text-2); font-size: 0.95rem; }
.check-list svg { width: 18px; height: 18px; color: var(--emerald); flex: none; margin-top: 4px; }
.section--dark .check-list li { color: var(--on-dark-2); }

/* 产品横向选择条 */
.product-switcher {
  display: flex; flex-wrap: wrap; gap: 10px;
  padding: var(--sp-4);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-top: var(--sp-8);
}
.product-switcher a {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  font-size: var(--text-sm); font-weight: 700; color: var(--text-2);
  transition: all var(--t-fast);
}
.product-switcher a svg { width: 15px; height: 15px; }
.product-switcher a:hover { border-color: var(--primary); color: var(--primary); }
.product-switcher a.active { background: var(--navy-900); color: #fff; border-color: var(--navy-900); }
.product-switcher a.active svg { color: var(--cyan-400); }

/* 页面锚点导航 */
.anchor-nav {
  position: sticky; top: 72px; z-index: 50;
  background: rgba(248, 250, 252, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.anchor-nav .an-inner {
  display: flex; gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 10px 0;
}
.anchor-nav .an-inner::-webkit-scrollbar { display: none; }
.anchor-nav a {
  flex: none;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: var(--text-sm); font-weight: 700; color: var(--text-2);
  transition: all var(--t-fast);
}
.anchor-nav a:hover { color: var(--primary); background: rgba(37, 99, 235, 0.07); }
.anchor-nav a.active { background: var(--navy-900); color: #fff; }

/* 案例详情内容 */
.prose { max-width: 780px; }
.prose h2 { font-size: 1.5rem; margin: var(--sp-8) 0 var(--sp-4); padding-top: var(--sp-4); }
.prose h3 { font-size: 1.15rem; margin: var(--sp-6) 0 var(--sp-3); }
.prose p { color: var(--text-2); margin-bottom: var(--sp-4); line-height: 1.9; }
.prose .lead { font-size: var(--text-lg); color: var(--text); font-weight: 600; }
.prose .kpi-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-4); margin: var(--sp-6) 0; }
.prose .kpi-box {
  text-align: center;
  padding: var(--sp-5) var(--sp-4);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.prose .kpi-box b { display: block; font-size: 1.7rem; font-weight: 800; color: var(--navy-900); font-variant-numeric: tabular-nums; }
.prose .kpi-box b span { color: var(--primary); }
.prose .kpi-box small { color: var(--text-3); font-size: 0.8rem; font-weight: 600; }

/* 流程编号段落（行业页） */
.pain-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-4); }
.pain-item {
  display: flex; gap: var(--sp-4);
  padding: var(--sp-5);
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--destructive);
  border-radius: var(--radius);
}
.pain-item svg { width: 20px; height: 20px; color: var(--destructive); flex: none; margin-top: 3px; }
.pain-item h4 { font-size: 0.98rem; margin-bottom: 4px; }
.pain-item p { font-size: 0.88rem; color: var(--text-2); }
.solution-item {
  display: flex; gap: var(--sp-4);
  padding: var(--sp-5);
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--emerald);
  border-radius: var(--radius);
}
.solution-item svg { width: 20px; height: 20px; color: var(--emerald); flex: none; margin-top: 3px; }
.solution-item h4 { font-size: 0.98rem; margin-bottom: 4px; }
.solution-item p { font-size: 0.88rem; color: var(--text-2); }

/* 侧边摘要卡（案例详情） */
.aside-stack { display: flex; flex-direction: column; gap: var(--sp-4); position: sticky; top: 132px; }
.aside-card {
  padding: var(--sp-5);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.aside-card h4 { font-size: 0.9rem; margin-bottom: var(--sp-3); letter-spacing: 0.04em; color: var(--text-3); }
.aside-card ul li { padding: 7px 0; font-size: 0.88rem; color: var(--text-2); display: flex; justify-content: space-between; gap: 10px; border-bottom: 1px dashed var(--border); }
.aside-card ul li:last-child { border-bottom: none; }
.aside-card ul li b { color: var(--text); font-weight: 700; text-align: right; }
.aside-card .aside-cta { width: 100%; margin-top: var(--sp-3); }

/* 服务清单（服务页） */
.service-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: clamp(24px, 4vw, 44px);
  margin-bottom: var(--sp-6);
}
.service-block:last-child { margin-bottom: 0; }
.service-block .sb-head { display: flex; align-items: flex-start; gap: var(--sp-4); margin-bottom: var(--sp-6); }
.service-block .sb-head .icon-tile { width: 58px; height: 58px; }
.service-block .sb-head .icon-tile svg { width: 29px; height: 29px; }
.service-block .sb-head h3 { font-size: 1.4rem; margin-bottom: 2px; }
.service-block .sb-head p { color: var(--text-2); font-size: 0.95rem; }
.service-block .sb-body { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-6); }
.service-block .sb-body h4 { font-size: 0.95rem; margin-bottom: var(--sp-3); color: var(--text-3); display: flex; align-items: center; gap: 8px; }
.service-block .sb-body h4 svg { width: 16px; height: 16px; color: var(--primary); }

/* 服务流程全宽展示：步骤卡获得充足宽度，避免文字挤压换行 */
.service-block .sb-body--stack { grid-template-columns: 1fr; }
.service-block .sb-flow .process-steps { margin-top: var(--sp-4); }
.service-block .sb-deliver {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-6);
  align-items: start;
}

/* 交付物 */
.deliverable-list li {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 0; font-size: 0.92rem; color: var(--text-2);
  border-bottom: 1px dashed var(--border);
}
.deliverable-list li:last-child { border-bottom: none; }
.deliverable-list svg { width: 16px; height: 16px; color: var(--primary); flex: none; }

/* ---------- 25. 响应式 ---------- */
@media (max-width: 1100px) {
  .main-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-actions .btn { display: none; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-constellation { max-width: 620px; margin-inline: auto; width: 100%; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(3, 1fr); }
  .process-steps .step:nth-child(n+4) { display: none; }
}

@media (max-width: 900px) {
  :root { --sp-10: 56px; --sp-12: 72px; }
  .grid-4, .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .testimonial-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--sp-6); }
  .contact-layout { grid-template-columns: 1fr; }
  .con-charts { grid-template-columns: 1fr; }
  .service-block .sb-body { grid-template-columns: 1fr; }
  .service-block .sb-deliver { grid-template-columns: 1fr; }
  .before-after { grid-template-columns: 1fr; }
  .ba-vs { display: none; }
  .hero-constellation .c-node { width: 132px; padding: 12px 14px; }
}

@media (max-width: 640px) {
  :root {
    --gutter: 18px;
    --sp-8: 40px;
    --sp-6: 26px;
    --sp-5: 20px;
  }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .team-grid, .honor-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .process-steps .step:nth-child(n+2) { display: none; }
  .feature-grid { grid-template-columns: 1fr; }
  .deploy-compare { grid-template-columns: 1fr; }
  .scenario-grid { grid-template-columns: 1fr; }
  .pain-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .stats .stat { padding: var(--sp-5) var(--sp-3); }
  .footer-grid { grid-template-columns: 1fr; gap: var(--sp-8); }
  .hero-constellation { aspect-ratio: auto; display: block; height: 480px; }
  .hero-constellation .c-node--n1 { top: 0; left: 0; }
  .hero-constellation .c-node--n2 { top: 84px; right: 0; }
  .hero-constellation .c-node--n3 { bottom: 24px; right: 0; }
  .hero-constellation .c-node--n4 { bottom: 0; left: 8px; }
  .hero-constellation .c-node--n5 { top: 176px; left: 6px; }
  .hero-constellation .c-node { width: 148px; }
  .hero-ctas .btn { flex: 1; }
  .mobile-cta-bar { display: flex; }
  body { padding-bottom: 0; }
  .float-stack { bottom: 84px; }
  .page-hero { padding-bottom: 48px; }
  .prose .kpi-row { grid-template-columns: 1fr; }
  .anchor-nav a { padding: 8px 14px; font-size: 0.82rem; }
}

/* ---------- 24.5 表单反馈 / 无障碍 ---------- */
.skip-link {
  position: absolute; left: -9999px; top: 0;
  z-index: 1000;
  background: var(--navy-900); color: #fff;
  padding: 12px 24px;
  border-radius: 0 0 12px 0;
  font-weight: 700;
}
.skip-link:focus { left: 0; }

.form-card.hidden { display: none; }
.form-success {
  display: none;
  text-align: center;
  padding: var(--sp-10) var(--sp-5);
  background: var(--surface);
  border: 1px solid rgba(16, 185, 129, 0.35);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}
.form-success.show { display: block; }
.form-success .fs-icon {
  width: 72px; height: 72px;
  margin: 0 auto var(--sp-5);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  background: linear-gradient(135deg, var(--emerald), #059669);
  box-shadow: 0 12px 32px rgba(16, 185, 129, 0.35);
}
.form-success .fs-icon svg { width: 34px; height: 34px; }
.form-success h3 { font-size: 1.5rem; margin-bottom: var(--sp-3); }
.form-success p { color: var(--text-2); max-width: 420px; margin: 0 auto var(--sp-6); }

.spinner-arc { animation: spin 0.8s linear infinite; transform-origin: center; }
@keyframes spin { to { transform: rotate(360deg); } }

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}