/* ===========================================================
   盘古优云 · 企业官网  —  Ant Design 架构样式
   设计令牌沿用 Ant Design，并加入适度纵深以满足官网质感。
   =========================================================== */
:root {
  /* Ant Design 色彩令牌 */
  --primary: #1677ff;
  --primary-hover: #4096ff;
  --primary-active: #0958d9;
  --primary-bg: #e6f4ff;
  --success: #52c41a;
  --warning: #faad14;
  --error: #ff4d4f;

  --text: rgba(0, 0, 0, 0.88);
  --text-secondary: rgba(0, 0, 0, 0.65);
  --text-tertiary: rgba(0, 0, 0, 0.45);

  --bg-body: #f0f2f5;          /* Ant Design 经典页面底色 */
  --bg-container: #ffffff;
  --bg-subtle: #fafafa;
  --border: #f0f0f0;
  --border-strong: #d9d9d9;

  --radius-sm: 6px;
  --radius: 8px;
  --radius-lg: 12px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .03), 0 1px 6px -1px rgba(0, 0, 0, .02), 0 2px 4px 0 rgba(0, 0, 0, .02);
  --shadow-md: 0 6px 16px 0 rgba(0, 0, 0, .08), 0 3px 6px -4px rgba(0, 0, 0, .12), 0 9px 28px 8px rgba(0, 0, 0, .05);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  --header-h: 64px;
  --maxw: 1200px;
}

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

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

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg-body);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-hover); }

/* ---------- 布局容器 ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-subtle { background: var(--bg-subtle); }
.section-inner { background: var(--bg-container); }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.nav {
  height: var(--header-h);
  display: flex; align-items: center; gap: 32px;
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--text); flex-shrink: 0; }
.brand .logo-mark { width: 34px; height: 34px; flex-shrink: 0; }
.brand small { display: block; font-size: 11px; font-weight: 400; color: var(--text-tertiary); letter-spacing: .5px; }
.brand-logo { height: 48px; width: auto; display: block; }
@media (max-width: 768px) { .brand-logo { height: 42px; } }

.nav-menu { display: flex; align-items: center; gap: 4px; margin-left: 8px; flex: 1; }
.nav-menu a {
  color: var(--text-secondary); font-size: 15px; padding: 8px 14px; border-radius: var(--radius-sm);
  position: relative; transition: color .2s, background .2s;
}
.nav-menu a:hover { color: var(--primary); background: var(--primary-bg); }
.nav-menu a.active { color: var(--primary); font-weight: 600; }

.nav-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }

.nav-toggle {
  display: none; width: 44px; height: 44px; border: none; background: transparent; cursor: pointer;
  align-items: center; justify-content: center;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); position: relative; transition: .25s; }
.nav-toggle span::before, .nav-toggle span::after { content: ""; position: absolute; left: 0; width: 22px; height: 2px; background: var(--text); transition: .25s; }
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after { top: 7px; }
.nav-toggle.open span { background: transparent; }
.nav-toggle.open span::before { top: 0; transform: rotate(45deg); }
.nav-toggle.open span::after { top: 0; transform: rotate(-45deg); }

/* ---------- 按钮 (Ant Design) ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 22px; border-radius: var(--radius);
  font-size: 15px; font-weight: 500; cursor: pointer; border: 1px solid transparent;
  transition: all .2s; white-space: nowrap; min-width: 44px; min-height: 44px;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 2px 0 rgba(5, 88, 217, .1); }
.btn-primary:hover { background: var(--primary-hover); color: #fff; }
.btn-primary:active { background: var(--primary-active); }
.btn-default { background: #fff; color: var(--text); border-color: var(--border-strong); }
.btn-default:hover { color: var(--primary); border-color: var(--primary); }
.btn-lg { height: 50px; padding: 0 30px; font-size: 16px; }
.btn-block { width: 100%; }
.btn:focus-visible { outline: 3px solid rgba(22, 119, 255, .35); outline-offset: 2px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1100px 520px at 78% -8%, rgba(22, 119, 255, .20), transparent 60%),
    radial-gradient(820px 480px at 8% 110%, rgba(82, 196, 26, .12), transparent 55%),
    linear-gradient(180deg, #f7faff 0%, #eef4ff 48%, #f0f2f5 100%);
  border-bottom: 1px solid var(--border);
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image: radial-gradient(rgba(22, 119, 255, .07) 1px, transparent 1px);
  background-size: 26px 26px; mask-image: linear-gradient(180deg, #000, transparent 70%);
}
.hero-grid { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; padding: 88px 0 96px; }
.hero h1 { font-size: clamp(32px, 5vw, 52px); line-height: 1.15; font-weight: 800; letter-spacing: -0.5px; margin-bottom: 20px; }
.hero h1 .accent { color: var(--primary); }
.hero p.lead { font-size: 18px; color: var(--text-secondary); max-width: 540px; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual { position: relative; aspect-ratio: 1/1; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: #fff; border: 1px solid var(--border); border-radius: 999px; padding: 6px 14px; font-size: 13px; color: var(--text-secondary); box-shadow: var(--shadow-sm); margin-bottom: 22px; }
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 4px rgba(82, 196, 26, .18); }

/* 抽象图形：云 + 盾牌 */
.float-card {
  position: absolute; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md); padding: 14px 16px; display: flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 600;
}
.fc-1 { top: 6%; left: -2%; animation: floaty 6s ease-in-out infinite; }
.fc-2 { top: 38%; right: -4%; animation: floaty 7s ease-in-out infinite .6s; }
.fc-3 { bottom: 6%; left: 14%; animation: floaty 6.5s ease-in-out infinite .3s; }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* ---------- 区块标题 ---------- */
.section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-head .eyebrow { color: var(--primary); font-weight: 600; letter-spacing: 2px; font-size: 13px; text-transform: uppercase; }
.section-head h2 { font-size: clamp(26px, 3.4vw, 36px); font-weight: 800; margin: 10px 0 12px; letter-spacing: -.3px; }
.section-head p { color: var(--text-secondary); font-size: 17px; }

/* ---------- 卡片栅格 (Ant Design Card) ---------- */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--bg-container); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px; box-shadow: var(--shadow-sm); transition: transform .25s, box-shadow .25s, border-color .25s;
  height: 100%;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: #c9e0ff; }
.card .icon { width: 52px; height: 52px; border-radius: 12px; display: grid; place-items: center; background: var(--primary-bg); color: var(--primary); margin-bottom: 18px; }
.card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.card p { color: var(--text-secondary); font-size: 15px; }
.card .tag { display: inline-block; margin-top: 14px; font-size: 12px; color: var(--primary); background: var(--primary-bg); border-radius: 999px; padding: 3px 12px; }

/* ---------- 统计 ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat { text-align: center; padding: 28px 16px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); }
.stat .num { font-size: clamp(30px, 4vw, 44px); font-weight: 800; color: var(--primary); line-height: 1; }
.stat .label { margin-top: 10px; color: var(--text-secondary); font-size: 15px; }

/* ---------- 特性列表 (左右分栏) ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split .visual { background: linear-gradient(135deg, #1677ff, #69b1ff); border-radius: var(--radius-lg); padding: 40px; color: #fff; min-height: 340px; display: flex; flex-direction: column; justify-content: center; box-shadow: var(--shadow-md); }
.split h2 { font-size: clamp(24px, 3vw, 32px); font-weight: 800; margin-bottom: 16px; }
.feature-list { list-style: none; display: grid; gap: 16px; }
.feature-list li { display: flex; gap: 12px; align-items: flex-start; }
.feature-list .tick { flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%; background: var(--primary-bg); color: var(--primary); display: grid; place-items: center; margin-top: 2px; }
.feature-list b { display: block; font-size: 16px; }
.feature-list span { color: var(--text-secondary); font-size: 15px; }

/* ---------- 时间线 / 步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; counter-reset: step; }
.step { position: relative; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 22px 18px; }
.step .n { width: 34px; height: 34px; border-radius: 50%; background: var(--primary); color: #fff; display: grid; place-items: center; font-weight: 700; margin-bottom: 12px; }
.step h4 { font-size: 16px; margin-bottom: 6px; }
.step p { font-size: 14px; color: var(--text-secondary); }

/* ---------- 标签筛选 (案例) ---------- */
.tabs { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 36px; }
.tab { border: 1px solid var(--border-strong); background: #fff; color: var(--text-secondary); padding: 8px 18px; border-radius: 999px; cursor: pointer; font-size: 14px; transition: .2s; min-height: 44px; }
.tab:hover { color: var(--primary); border-color: var(--primary); }
.tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.case-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; box-shadow: var(--shadow-sm); height: 100%; display: flex; flex-direction: column; }
.case-card .meta { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.case-card .client { font-weight: 700; font-size: 18px; }
.case-card .industry { font-size: 12px; color: var(--primary); background: var(--primary-bg); padding: 3px 10px; border-radius: 999px; }
.case-card h4 { font-size: 14px; color: var(--text-tertiary); margin: 14px 0 6px; font-weight: 600; }
.case-card p { font-size: 14.5px; color: var(--text-secondary); }
.case-card .result { margin-top: auto; padding-top: 16px; border-top: 1px dashed var(--border); color: var(--success); font-weight: 600; font-size: 14.5px; }

/* ---------- 等保体系表 ---------- */
.pillar-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.pillar { background: #fff; border: 1px solid var(--border); border-top: 3px solid var(--primary); border-radius: var(--radius); padding: 22px; }
.pillar h3 { font-size: 17px; margin-bottom: 12px; }
.pillar ul { list-style: none; display: grid; gap: 8px; }
.pillar li { font-size: 14px; color: var(--text-secondary); padding-left: 16px; position: relative; }
.pillar li::before { content: ""; position: absolute; left: 0; top: 9px; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }

/* APDRO 模型 */
.apdro { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.apdro .node { background: linear-gradient(160deg, #1677ff, #0958d9); color: #fff; border-radius: var(--radius); padding: 24px 16px; text-align: center; box-shadow: var(--shadow-sm); }
.apdro .node .letter { font-size: 30px; font-weight: 800; }
.apdro .node .name { font-size: 14px; margin-top: 6px; opacity: .95; }
.apdro .node .desc { font-size: 12.5px; opacity: .85; margin-top: 6px; }

/* ---------- 团队 ---------- */
.team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.member { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: transform .25s, box-shadow .25s; }
.member:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.member .avatar { height: 150px; display: grid; place-items: center; background: linear-gradient(135deg, #e6f4ff, #bae0ff); color: var(--primary); font-size: 46px; font-weight: 800; }
.member .body { padding: 20px; }
.member .name { font-size: 18px; font-weight: 700; }
.member .role { color: var(--primary); font-size: 13.5px; margin: 2px 0 10px; }
.member p { font-size: 14px; color: var(--text-secondary); }

/* ---------- CTA ---------- */
.cta { background: linear-gradient(120deg, #0b1f4d, #1677ff 75%); color: #fff; border-radius: var(--radius-lg); padding: 56px; text-align: center; box-shadow: var(--shadow-md); }
.cta h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; margin-bottom: 12px; }
.cta p { opacity: .9; font-size: 17px; margin-bottom: 28px; }
.cta .btn-default { background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.4); color: #fff; }
.cta .btn-default:hover { background: rgba(255,255,255,.22); color: #fff; }
.cta .btn-primary { background: #fff; color: var(--primary); }
.cta .btn-primary:hover { background: #e6f4ff; }

/* ---------- 面包屑 ---------- */
.breadcrumb { font-size: 14px; color: var(--text-tertiary); padding: 18px 0; }
.breadcrumb a { color: var(--text-tertiary); }
.breadcrumb span { margin: 0 8px; }

/* ---------- 页脚 ---------- */
.site-footer { background: #001529; color: rgba(255,255,255,.65); padding: 56px 0 28px; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
.site-footer .brand { color: #fff; margin-bottom: 16px; }
.site-footer .brand small { color: rgba(255,255,255,.5); }
.site-footer p { font-size: 14px; color: rgba(255,255,255,.55); max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer-col a { display: block; color: rgba(255,255,255,.6); font-size: 14px; padding: 6px 0; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); margin-top: 36px; padding-top: 22px; font-size: 13px; color: rgba(255,255,255,.45); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }

/* ---------- 表单 (联系 / 留言) ---------- */
.form-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow-sm); }
.field { margin-bottom: 20px; }
.field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.field label .req { color: var(--error); margin-left: 3px; }
.field input, .field textarea, .field select {
  width: 100%; min-height: 44px; padding: 10px 14px; font-size: 15px; font-family: var(--font);
  border: 1px solid var(--border-strong); border-radius: var(--radius); background: #fff; color: var(--text);
  transition: border-color .2s, box-shadow .2s;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(22,119,255,.12); }
.field.error input, .field.error textarea { border-color: var(--error); }
.field .err-msg { display: none; color: var(--error); font-size: 13px; margin-top: 6px; }
.field.error .err-msg { display: block; }
.form-note { font-size: 13px; color: var(--text-tertiary); margin-top: 6px; }
.form-ok { display: none; background: #f6ffed; border: 1px solid #b7eb8f; color: #389e0d; border-radius: var(--radius); padding: 14px 16px; margin-bottom: 20px; font-size: 14px; }
.form-ok.show { display: block; }

/* 联系信息卡 */
.contact-info { display: grid; gap: 18px; }
.contact-info .item { display: flex; gap: 14px; align-items: flex-start; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.contact-info .item .ic { width: 42px; height: 42px; border-radius: 10px; background: var(--primary-bg); color: var(--primary); display: grid; place-items: center; flex-shrink: 0; }
.contact-info .item b { display: block; font-size: 15px; }
.contact-info .item span { color: var(--text-secondary); font-size: 14px; }

/* ---------- 滚动揭示 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 返回顶部 ---------- */
.to-top { position: fixed; right: 24px; bottom: 24px; width: 46px; height: 46px; border-radius: 50%; background: var(--primary); color: #fff; border: none; cursor: pointer; display: grid; place-items: center; box-shadow: var(--shadow-md); opacity: 0; pointer-events: none; transition: .25s; z-index: 90; }
.to-top.show { opacity: 1; pointer-events: auto; }
.to-top:focus-visible { outline: 3px solid rgba(22,119,255,.4); outline-offset: 2px; }

/* ---------- 响应式 ---------- */
@media (max-width: 992px) {
  .hero-grid { grid-template-columns: 1fr; gap: 24px; padding: 64px 0; }
  .hero-visual { max-width: 420px; margin: 0 auto; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .pillar-grid { grid-template-columns: repeat(2, 1fr); }
  .apdro { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-menu {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md);
    padding: 8px 16px 16px; transform: translateY(-120%); transition: transform .25s; margin: 0;
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-menu a { padding: 14px; border-radius: var(--radius-sm); }
  .nav-toggle { display: flex; }
  .nav-actions .btn-default { display: none; }
  .grid-3, .grid-2, .team-grid { grid-template-columns: 1fr; }
  .section { padding: 56px 0; }
  .cta { padding: 36px 22px; }
}
@media (max-width: 520px) {
  .stats, .grid-4, .pillar-grid, .apdro, .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .container { padding: 0 16px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}