/* ============================================================
   数据库管理系统展示站 - 共享样式
   设计：深色科技风 / 玻璃拟态 / 移动优先
   ============================================================ */

:root {
  --bg-0: #070b16;
  --bg-1: #0c1322;
  --bg-2: #111a2e;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.06);
  --border: rgba(120, 170, 255, 0.14);
  --border-strong: rgba(120, 170, 255, 0.28);

  --text: #e8eefc;
  --text-soft: #a7b4d4;
  --text-muted: #6b7896;

  --primary: #2dd4ff;
  --primary-2: #3b82f6;
  --accent: #8b5cf6;
  --success: #22d3a6;
  --warn: #fbbf24;
  --danger: #f87171;

  --grad-primary: linear-gradient(135deg, #2dd4ff 0%, #3b82f6 50%, #8b5cf6 100%);
  --grad-soft: linear-gradient(135deg, rgba(45,212,255,0.12), rgba(139,92,246,0.12));

  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 40px rgba(45, 212, 255, 0.25);

  --maxw: 1200px;
  --header-h: 68px;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-0);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 全局背景纹理 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(900px 600px at 80% -10%, rgba(59,130,246,0.18), transparent 60%),
    radial-gradient(700px 500px at 0% 20%, rgba(139,92,246,0.14), transparent 55%),
    radial-gradient(600px 500px at 50% 100%, rgba(45,212,255,0.10), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* ============ 顶部导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(7, 11, 22, 0.72);
  border-bottom: 1px solid var(--border);
}
.nav {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.5px;
}
.brand .logo {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--grad-primary);
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-glow);
  position: relative;
}
.brand .logo::before {
  content: "";
  width: 14px; height: 14px;
  border: 2.5px solid #fff;
  border-radius: 3px;
  border-bottom-color: transparent;
  border-right-color: transparent;
  transform: rotate(-45deg);
}
.brand small {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 1px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-links a {
  padding: 8px 14px;
  font-size: 14px;
  color: var(--text-soft);
  border-radius: 8px;
  transition: all .2s;
}
.nav-links a:hover { color: var(--text); background: var(--surface); }
.nav-cta {
  background: var(--grad-primary);
  color: #06101f !important;
  font-weight: 600;
  padding: 9px 18px !important;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(45,212,255,0.25);
}
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 10px;
  cursor: pointer;
  color: var(--text);
  font-size: 20px;
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all .25s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad-primary);
  color: #06101f;
  box-shadow: 0 12px 30px rgba(45,212,255,0.30);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(45,212,255,0.45); }
.btn-ghost {
  background: var(--surface);
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-ghost:hover { background: var(--surface-2); border-color: var(--primary); }

/* ============ Hero ============ */
.hero {
  position: relative;
  padding: 90px 0 70px;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  font-size: 12.5px;
  color: var(--primary);
  background: rgba(45,212,255,0.08);
  border: 1px solid rgba(45,212,255,0.25);
  border-radius: 999px;
  letter-spacing: 1px;
  margin-bottom: 22px;
}
.eyebrow .dot {
  width: 6px; height: 6px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--primary);
  animation: pulse 1.6s infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; }
  50% { opacity: .35; }
}
.hero h1 {
  font-size: clamp(32px, 5vw, 54px);
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 22px;
}
.hero h1 .grad {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p.lead {
  font-size: 17px;
  color: var(--text-soft);
  margin-bottom: 32px;
  max-width: 560px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  gap: 36px;
  margin-top: 48px;
  flex-wrap: wrap;
}
.hero-stats .stat .num {
  font-size: 30px;
  font-weight: 800;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-stats .stat .label {
  font-size: 13px;
  color: var(--text-muted);
}

/* Hero 可视化：模拟数据控制台 */
.console-card {
  position: relative;
  background: linear-gradient(160deg, rgba(15,23,42,0.92), rgba(8,12,24,0.96));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.console-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, rgba(45,212,255,0.5), transparent 40%, rgba(139,92,246,0.4));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none;
}
.console-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}
.console-bar .dots { display: flex; gap: 6px; }
.console-bar .dots span { width: 11px; height: 11px; border-radius: 50%; background: #2a3552; }
.console-bar .dots span:nth-child(1){ background:#f87171; }
.console-bar .dots span:nth-child(2){ background:#fbbf24; }
.console-bar .dots span:nth-child(3){ background:#22d3a6; }
.console-bar .title {
  font-size: 12px; color: var(--text-muted);
  margin-left: 10px; font-family: ui-monospace, monospace;
}
.metric-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 14px;
}
.metric {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
}
.metric .k { font-size: 11px; color: var(--text-muted); }
.metric .v { font-size: 19px; font-weight: 700; margin-top: 4px; }
.metric .v.up { color: var(--success); }
.metric .v.warn { color: var(--warn); }

.spark {
  height: 64px;
  background: linear-gradient(180deg, rgba(45,212,255,0.18), transparent);
  border-radius: 10px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
}
.spark svg { width: 100%; height: 100%; }

.query-list { margin-top: 14px; font-family: ui-monospace, monospace; font-size: 12px; }
.query-list .row {
  display: flex; justify-content: space-between;
  padding: 7px 4px;
  border-bottom: 1px dashed var(--border);
  color: var(--text-soft);
}
.query-list .row .ok { color: var(--success); }
.query-list .row .ms { color: var(--text-muted); }

/* ============ 通用区块 ============ */
section { position: relative; }
.section {
  padding: 84px 0;
}
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}
.section-head .tag {
  display: inline-block;
  font-size: 12.5px;
  color: var(--primary);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 800;
  letter-spacing: -0.3px;
  margin-bottom: 14px;
}
.section-head p {
  color: var(--text-soft);
  font-size: 16px;
}

/* ============ 功能卡片网格 ============ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all .3s;
  position: relative;
  overflow: hidden;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  background: var(--surface-2);
  box-shadow: var(--shadow);
}
.feature-card::after {
  content: "";
  position: absolute;
  top: 0; left: -50%;
  width: 50%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(45,212,255,0.06), transparent);
  transition: left .6s;
}
.feature-card:hover::after { left: 150%; }
.feature-card .icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--grad-soft);
  border: 1px solid var(--border-strong);
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  font-size: 22px;
}
.feature-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
  font-weight: 700;
}
.feature-card p {
  font-size: 14.5px;
  color: var(--text-soft);
}
.feature-card ul.tags {
  display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px;
}
.feature-card ul.tags li {
  font-size: 11.5px;
  padding: 3px 9px;
  border-radius: 999px;
  background: rgba(45,212,255,0.08);
  color: var(--primary);
  border: 1px solid rgba(45,212,255,0.18);
}

/* ============ 架构示意 ============ */
.arch-wrap {
  background: linear-gradient(180deg, rgba(15,23,42,0.6), rgba(8,12,24,0.6));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  position: relative;
  overflow: hidden;
}
.arch-layers {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.arch-layer {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 20px;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 20px;
  position: relative;
}
.arch-layer .lname {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700;
  font-size: 15px;
}
.arch-layer .lname .ic {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: var(--grad-primary);
  display: grid; place-items: center;
  font-size: 16px;
  color: #06101f;
}
.arch-layer .nodes {
  display: flex; gap: 10px; flex-wrap: wrap;
}
.arch-layer .nodes span {
  font-size: 12.5px;
  padding: 6px 12px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-soft);
}
.arch-flow {
  position: absolute;
  left: 96px;
  top: 100%;
  width: 2px; height: 14px;
  background: linear-gradient(var(--primary), transparent);
}

/* ============ 指标条 ============ */
.metrics-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  background: var(--grad-soft);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
}
.metrics-strip .m { text-align: center; }
.metrics-strip .m .v {
  font-size: 36px; font-weight: 800;
  background: var(--grad-primary);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.metrics-strip .m .l {
  font-size: 13px; color: var(--text-soft); margin-top: 4px;
}

/* ============ 行业场景 ============ */
.industries {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.industry {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 18px;
  text-align: center;
  transition: all .25s;
}
.industry:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  background: var(--surface-2);
}
.industry .ic { font-size: 28px; margin-bottom: 10px; }
.industry .t { font-weight: 600; font-size: 15px; }
.industry .d { font-size: 12.5px; color: var(--text-muted); margin-top: 4px; }

/* ============ 安全合规 ============ */
.security-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: center;
}
.security-list { display: flex; flex-direction: column; gap: 16px; }
.security-item {
  display: flex; gap: 14px;
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.security-item .ic {
  flex-shrink: 0;
  width: 42px; height: 42px;
  border-radius: 10px;
  background: rgba(34,211,166,0.12);
  color: var(--success);
  display: grid; place-items: center;
  font-size: 18px;
  border: 1px solid rgba(34,211,166,0.25);
}
.security-item h4 { font-size: 15.5px; margin-bottom: 4px; }
.security-item p { font-size: 13.5px; color: var(--text-soft); }

.compliance-badges {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.badge-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 18px;
  text-align: center;
  transition: all .25s;
}
.badge-card:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.badge-card .seal {
  width: 56px; height: 56px;
  margin: 0 auto 12px;
  border-radius: 50%;
  border: 2px dashed var(--primary);
  display: grid; place-items: center;
  color: var(--primary);
  font-size: 22px;
  background: rgba(45,212,255,0.06);
}
.badge-card .t { font-weight: 700; font-size: 14.5px; }
.badge-card .d { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* ============ FAQ ============ */
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .25s;
}
.faq-item.open { border-color: var(--border-strong); }
.faq-q {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 22px;
  cursor: pointer;
  font-weight: 600;
  font-size: 15.5px;
  user-select: none;
}
.faq-q .arrow {
  transition: transform .3s;
  color: var(--primary);
  font-size: 14px;
}
.faq-item.open .faq-q .arrow { transform: rotate(180deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
  color: var(--text-soft);
  font-size: 14.5px;
}
.faq-item.open .faq-a { max-height: 400px; }
.faq-a p { padding: 0 22px 20px; }

/* ============ CTA 区 ============ */
.cta-band {
  background: linear-gradient(135deg, rgba(45,212,255,0.10), rgba(139,92,246,0.10));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 56px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-band h2 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  margin-bottom: 14px;
}
.cta-band p { color: var(--text-soft); margin-bottom: 28px; max-width: 580px; margin-left: auto; margin-right: auto; }
.cta-band .note {
  margin-top: 18px;
  font-size: 12.5px;
  color: var(--text-muted);
}

/* ============ 页脚 ============ */
.site-footer {
  border-top: 1px solid var(--border);
  background: rgba(7,11,22,0.6);
  padding: 56px 0 28px;
  margin-top: 80px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-col h4 {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  font-size: 14px;
  color: var(--text-soft);
  transition: color .2s;
}
.footer-col ul li a:hover { color: var(--primary); }
.footer-brand p {
  font-size: 13.5px;
  color: var(--text-muted);
  margin-top: 14px;
  max-width: 320px;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 12.5px;
  color: var(--text-muted);
}
.footer-bottom .links a { margin-left: 16px; color: var(--text-soft); }
.footer-bottom .links a:hover { color: var(--primary); }

/* ============ 资质声明条 ============ */
.qual-banner {
  background: linear-gradient(90deg, rgba(251,191,36,0.10), rgba(251,191,36,0.02));
  border: 1px solid rgba(251,191,36,0.25);
  border-radius: var(--radius);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13.5px;
  color: #fcd34d;
  margin-bottom: 8px;
}
.qual-banner .ic { font-size: 18px; }

/* ============ 子页面通用 ============ */
.page-hero {
  padding: 70px 0 40px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(15,23,42,0.6), transparent);
}
.page-hero h1 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  margin-bottom: 12px;
}
.page-hero .breadcrumb {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 18px;
}
.page-hero .breadcrumb a:hover { color: var(--primary); }
.page-hero p { color: var(--text-soft); max-width: 720px; }

.legal-doc {
  padding: 50px 0;
  max-width: 920px;
  margin: 0 auto;
}
.legal-doc .toc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 26px;
  margin-bottom: 40px;
}
.legal-doc .toc h4 { font-size: 13px; color: var(--text-muted); letter-spacing: 1px; margin-bottom: 12px; text-transform: uppercase; }
.legal-doc .toc ol { padding-left: 20px; }
.legal-doc .toc ol li { margin-bottom: 6px; font-size: 14px; }
.legal-doc .toc ol li a { color: var(--text-soft); }
.legal-doc .toc ol li a:hover { color: var(--primary); }

.legal-doc .meta {
  font-size: 13px; color: var(--text-muted);
  margin-bottom: 30px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}
.legal-doc section.block {
  margin-bottom: 38px;
  scroll-margin-top: 90px;
}
.legal-doc section.block h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.legal-doc section.block h2 .num {
  font-size: 13px;
  color: var(--primary);
  background: rgba(45,212,255,0.10);
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid rgba(45,212,255,0.25);
}
.legal-doc section.block h3 {
  font-size: 16.5px;
  margin: 20px 0 10px;
  color: var(--text);
}
.legal-doc section.block p {
  color: var(--text-soft);
  font-size: 14.5px;
  margin-bottom: 12px;
}
.legal-doc section.block ul, .legal-doc section.block ol {
  padding-left: 22px;
  margin-bottom: 14px;
  color: var(--text-soft);
  font-size: 14.5px;
}
.legal-doc section.block ul li, .legal-doc section.block ol li { margin-bottom: 8px; }
.legal-doc .callout {
  background: rgba(251,191,36,0.08);
  border: 1px solid rgba(251,191,36,0.25);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: 14px;
  color: #fcd34d;
  margin: 20px 0;
  display: flex;
  gap: 10px;
}
.legal-doc .callout .ic { flex-shrink: 0; }

/* ============ 咨询弹窗 ============ */
.modal-mask {
  position: fixed; inset: 0;
  background: rgba(3, 6, 14, 0.78);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  opacity: 0;
  transition: opacity .25s;
}
.modal-mask.show { display: flex; opacity: 1; }
.modal {
  background: linear-gradient(160deg, #111a2e, #0a1020);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  max-width: 460px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow);
  transform: translateY(20px);
  transition: transform .3s;
  position: relative;
}
.modal-mask.show .modal { transform: translateY(0); }
.modal .ic-wrap {
  width: 64px; height: 64px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--grad-soft);
  border: 1px solid var(--border-strong);
  display: grid; place-items: center;
  font-size: 28px;
  color: var(--primary);
}
.modal h3 { font-size: 20px; margin-bottom: 12px; }
.modal p { color: var(--text-soft); font-size: 14.5px; margin-bottom: 22px; line-height: 1.8; }
.modal p strong { color: var(--text); }
.modal .modal-close {
  position: absolute;
  top: 14px; right: 16px;
  width: 32px; height: 32px;
  border: none;
  background: var(--surface);
  border-radius: 8px;
  color: var(--text-soft);
  cursor: pointer;
  font-size: 18px;
}
.modal .modal-close:hover { background: var(--surface-2); color: var(--text); }

/* ============ 滚动入场动画 ============ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ============ 响应式 ============ */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .industries { grid-template-columns: repeat(2, 1fr); }
  .metrics-strip { grid-template-columns: repeat(2, 1fr); }
  .security-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .arch-layer { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-toggle { display: grid; place-items: center; }
  .nav-links.open {
    display: flex;
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(7,11,22,0.98);
    border-bottom: 1px solid var(--border);
    padding: 14px 20px;
    gap: 4px;
  }
  .nav-links.open a { padding: 12px 14px; }
  .features-grid { grid-template-columns: 1fr; }
  .industries { grid-template-columns: 1fr; }
  .compliance-badges { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .section { padding: 60px 0; }
  .hero { padding: 50px 0 40px; }
  .hero-stats { gap: 24px; }
  .cta-band { padding: 40px 22px; }
  .arch-wrap { padding: 22px; }
  .legal-doc { padding: 30px 0; }
}