/* =========================================================
   河南爱享智能科技 · 响应式样式表（深蓝商务 · 金黄点睛）
   设计：冷调浅蓝白底 + 主色深蓝 #022A99 + 辅色金黄 #FBCD08
        + 蓝调弥散阴影 + 大留白 + 有机流体光晕
   约定：移动优先；断点 768px / 1024px；WCAG AA 对比度
   ========================================================= */

:root {
  /* 背景与表面（冷调浅蓝白，稳重商务） */
  --bg: #f4f7fd;
  --bg-soft: #e9eefb;
  --bg-tint: #e1e9fb;
  --surface: #ffffff;
  --surface-2: #f3f6fc;
  --border: #e3e9f4;
  --border-strong: #ccd8ee;

  /* 文字（深蓝黑 / 中灰蓝） */
  --text: #0e1b3d;
  --muted: #5a6685;

  /* 品牌色（主色 深蓝 #022A99 / 辅色 金黄 #FBCD08） */
  --primary: #022A99;        /* 主色 深蓝 */
  --primary-light: #1c46c8;  /* 渐变中段 / hover */
  --primary-bright: #3a6fe0; /* 渐变亮部 */
  --accent: #FBCD08;         /* 辅色 金黄 */
  --grad: linear-gradient(120deg, #022A99 0%, #1c46c8 52%, #3a6fe0 100%);
  --grad-soft: linear-gradient(135deg, rgba(2,42,153,0.10), rgba(2,42,153,0.03));

  /* 形状 / 阴影（蓝调弥散） */
  --radius: 24px;
  --radius-sm: 14px;
  --shadow-sm: 0 1px 2px rgba(14,27,61,0.05), 0 8px 20px -10px rgba(2,42,153,0.12);
  --shadow-md: 0 22px 50px -26px rgba(2,42,153,0.45);
  --shadow-lg: 0 34px 80px -30px rgba(2,42,153,0.5);
  --maxw: 1180px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.34, 1.3, 0.64, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  margin: 0;
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { line-height: 1.22; margin: 0 0 0.5em; font-weight: 700; letter-spacing: -0.2px; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 32px; border-radius: 999px; font-weight: 600; font-size: 0.95rem;
  cursor: pointer; border: 1px solid transparent;
  transition: transform 0.25s var(--ease-soft), box-shadow 0.25s var(--ease), background 0.25s, filter 0.25s, border-color 0.25s;
  white-space: nowrap;
}
.btn:focus-visible { outline: 3px solid var(--primary); outline-offset: 3px; }
.btn-primary {
  background: var(--grad); color: #fff;
  box-shadow: 0 14px 30px -14px rgba(2,42,153,0.55);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg), 0 14px 30px -14px rgba(251,205,8,0.5); }
.btn-ghost { background: rgba(255,255,255,0.7); border-color: var(--border-strong); color: var(--text); backdrop-filter: blur(6px); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(244,247,253,0.78);
  backdrop-filter: blur(16px) saturate(1.2);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
}
.site-header.scrolled { border-color: var(--border); box-shadow: var(--shadow-sm); background: rgba(244,247,253,0.92); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 74px; }

.brand { display: flex; align-items: center; gap: 11px; font-weight: 800; }
.brand-mark { display: inline-flex; line-height: 0; }
.brand-mark svg { filter: drop-shadow(0 3px 6px rgba(2,42,153,0.22)); transition: transform 0.3s ease; }
.brand:hover .brand-mark svg { transform: translateY(-1px) rotate(-4deg); }
.brand-text { color: var(--primary); font-size: 1.22rem; font-weight: 800; letter-spacing: 0.5px; display: flex; align-items: baseline; gap: 7px; }
.brand-text i { font-style: normal; font-size: 0.72rem; color: var(--muted); letter-spacing: 2px; font-weight: 600; }

.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-menu a {
  padding: 9px 16px; border-radius: 12px; color: var(--muted); font-size: 0.94rem;
  transition: color 0.2s, background 0.2s;
}
.nav-menu a:hover { color: var(--primary); background: var(--bg-soft); }
.nav-cta { color: var(--primary) !important; background: transparent; border: 1.5px solid var(--primary); font-weight: 600; }
.nav-cta:hover, .nav-menu a.nav-cta.active { color: #fff !important; background: var(--grad); border-color: transparent; transform: translateY(-1px); box-shadow: 0 10px 22px -10px rgba(251,205,8,0.45); }
.nav-menu a.active { color: var(--primary); background: var(--bg-soft); font-weight: 600; }

.footer-col a:focus-visible, .nav-menu a:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 8px; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: transform 0.3s, opacity 0.3s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero（有机流体背景） ===== */
.hero { position: relative; padding: 104px 0 88px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.orb { position: absolute; filter: blur(72px); opacity: 0.55; border-radius: 45% 55% 52% 48% / 50% 45% 55% 50%; }
.orb-1 { width: 520px; height: 520px; background: radial-gradient(circle at 35% 35%, #5b86e5, #022A99 75%); top: -190px; left: -130px; }
.orb-2 { width: 560px; height: 560px; background: radial-gradient(circle at 65% 40%, #93b4f2, #1c46c8 75%); bottom: -240px; right: -150px; opacity: 0.45; }
.orb-3 { width: 360px; height: 360px; background: radial-gradient(circle at 50% 50%, #fbe79a, #FBCD08 75%); top: 38%; left: 47%; opacity: 0.22; }
.grid-lines {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(14,27,61,0.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(14,27,61,0.04) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 78%);
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 78%);
}
.hero-inner { position: relative; z-index: 1; text-align: center; max-width: 840px; margin: 0 auto; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 18px; border-radius: 999px;
  background: rgba(255,255,255,0.8); border: 1px solid rgba(2,42,153,0.18);
  color: var(--primary); font-size: 0.82rem; letter-spacing: 1px; font-weight: 600; margin-bottom: 26px;
  box-shadow: var(--shadow-sm);
}
.eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgba(251,205,8,0.20); }
.hero-title { font-size: clamp(2.4rem, 6.4vw, 4.4rem); letter-spacing: -0.8px; margin-bottom: 22px; }
.hero-sub { color: var(--muted); font-size: clamp(1rem, 2.4vw, 1.22rem); max-width: 660px; margin: 0 auto 36px; line-height: 1.8; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 60px; }
.hero-stats {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
  border-top: 1px solid var(--border); padding-top: 40px;
}
.hero-stats strong { display: block; font-size: clamp(1.8rem, 4.4vw, 2.6rem); background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-stats span { color: var(--muted); font-size: 0.9rem; }

/* ===== 通用 section ===== */
.section { padding: 96px 0; }
.section-alt { background: linear-gradient(180deg, var(--bg-soft) 0%, #eef3fc 100%); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 60px; }
.kicker { color: var(--primary); font-size: 0.78rem; letter-spacing: 2.5px; font-weight: 700; margin-bottom: 12px; }
.section-head h2 { font-size: clamp(1.7rem, 4.2vw, 2.6rem); letter-spacing: -0.4px; }
.lead { color: var(--muted); font-size: 1.06rem; }

/* ===== 核心能力卡片 ===== */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 34px 30px; transition: transform 0.3s var(--ease), border-color 0.3s, box-shadow 0.3s;
  position: relative; overflow: hidden;
}
.card::before {
  content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 100%;
  background: var(--grad); opacity: 0; transition: opacity 0.3s;
}
.card:hover { transform: translateY(-6px); border-color: transparent; box-shadow: var(--shadow-md); }
.card:hover::before { opacity: 1; }
.card-ico {
  width: 58px; height: 58px; border-radius: 18px; display: grid; place-items: center;
  background: var(--grad-soft); border: 1px solid var(--border); margin-bottom: 22px;
  color: var(--primary);
  transition: color 0.3s, background 0.3s, border-color 0.3s;
}
.card-ico svg { width: 30px; height: 30px; }
.card:hover .card-ico { color: #a9840a; background: rgba(251,205,8,0.14); border-color: rgba(251,205,8,0.45); }
.card h3 { font-size: 1.24rem; }
.card p { color: var(--muted); margin: 0; font-size: 0.96rem; }

/* ===== 产品方案 Tabs ===== */
.tabs { max-width: 980px; margin: 0 auto; }
.tab-bar { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 36px; }
.tab {
  padding: 11px 22px; border-radius: 999px; cursor: pointer;
  background: #fff; border: 1px solid var(--border-strong); color: var(--muted);
  font-size: 0.96rem; transition: all 0.2s;
}
.tab:hover { color: var(--primary); border-color: var(--primary); }
.tab.active { color: #fff; background: var(--grad); border-color: transparent; font-weight: 600; }
.tab:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }
.tab-panel { display: none; }
.tab-panel.active { display: grid; grid-template-columns: 1.2fr 1fr; gap: 36px; align-items: center; animation: fade 0.4s var(--ease); }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.panel-text h3 { font-size: 1.55rem; }
.panel-text ul { list-style: none; padding: 0; margin: 16px 0 0; }
.panel-text li { padding-left: 28px; position: relative; color: var(--muted); margin-bottom: 10px; }
.panel-text li::before { content: "✓"; position: absolute; left: 0; color: var(--primary); font-weight: 700; }
.panel-visual {
  display: flex; flex-wrap: wrap; gap: 12px; align-content: center; justify-content: center;
  min-height: 180px; background: var(--grad-soft); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px;
}
.chip { padding: 9px 18px; border-radius: 999px; background: #fff; border: 1px solid var(--border); font-size: 0.92rem; color: var(--text); box-shadow: var(--shadow-sm); }

/* ===== 技术架构 ===== */
.arch { display: flex; align-items: stretch; justify-content: center; gap: 0; flex-wrap: wrap; margin-bottom: 54px; }
.arch-layer {
  flex: 1 1 220px; max-width: 320px; text-align: center;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px 22px; position: relative; overflow: hidden;
  transition: transform 0.3s var(--ease), box-shadow 0.3s;
}
.arch-layer:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.arch-layer::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 4px; background: var(--grad); }
.arch-ico { color: var(--primary); display: block; margin: 0 auto 10px; }
.arch-ico svg { width: 36px; height: 36px; }
.arch-layer h4 { color: var(--primary); font-size: 1.25rem; }
.arch-layer p { color: var(--muted); margin: 0; font-size: 0.92rem; }
.arch-arrow { display: grid; place-items: center; color: var(--border-strong); font-size: 1.6rem; padding: 0 16px; }
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.steps li { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 22px; transition: box-shadow 0.3s, transform 0.3s; }
.steps li:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.steps span { display: inline-block; font-weight: 800; font-size: 1.5rem; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.steps h4 { margin: 8px 0 6px; font-size: 1.08rem; }
.steps p { color: var(--muted); margin: 0; font-size: 0.92rem; }

/* ===== 客户案例 ===== */
.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 28px; transition: transform 0.3s var(--ease), box-shadow 0.3s; }
.case:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.case-metrics { display: flex; align-items: baseline; gap: 8px; margin-bottom: 16px; }
.case-metrics strong { font-size: 2.1rem; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.case-metrics span { color: var(--muted); font-size: 0.9rem; }
.case h3 { font-size: 1.12rem; }
.case p { color: var(--muted); margin: 0; font-size: 0.94rem; }

/* ===== 数据看板 ===== */
.metrics { position: relative; overflow: hidden; padding: 78px 0; background: var(--grad); border-radius: 32px; margin: 0 auto; max-width: calc(var(--maxw) + 48px); }
.metrics::after { content: ""; position: absolute; right: -90px; top: -110px; width: 300px; height: 300px; border-radius: 50%; background: radial-gradient(circle at 50% 50%, rgba(251,205,8,0.55), rgba(251,205,8,0) 70%); filter: blur(4px); pointer-events: none; }
.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; padding: 0 24px; }
.metric strong { display: block; font-size: clamp(2.2rem, 5vw, 3.2rem); color: #fff; }
.metric span { color: rgba(255,255,255,0.9); font-size: 0.95rem; }

/* ===== 新闻 ===== */
.news { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 28px; transition: transform 0.3s var(--ease), box-shadow 0.3s; }
.news-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.news-item time { color: var(--primary); font-size: 0.82rem; letter-spacing: 1px; font-weight: 600; }
.news-item h3 { font-size: 1.12rem; margin: 8px 0; }
.news-item p { color: var(--muted); margin: 0; font-size: 0.94rem; }

/* ===== 联系我们 ===== */
.contact { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
.contact-info h2 { font-size: clamp(1.7rem, 4vw, 2.4rem); }
.contact-list { list-style: none; padding: 0; margin: 24px 0 0; }
.contact-list li { display: flex; align-items: center; gap: 12px; padding: 14px 0; color: var(--muted); border-bottom: 1px solid var(--border); }
.contact-list svg { width: 22px; height: 22px; color: var(--primary); flex: none; }
.contact-form { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; box-shadow: var(--shadow-sm); }
.field { display: flex; flex-direction: column; }
.field-full { grid-column: 1 / -1; }
.field label { font-size: 0.9rem; margin-bottom: 6px; color: var(--text); font-weight: 500; }
.req { color: #ef4444; }
.field input, .field textarea {
  background: var(--surface-2); border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  padding: 12px 14px; color: var(--text); font-size: 0.96rem; font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(2,42,153,0.16); }
.field textarea { resize: vertical; }
.err { color: #ef4444; font-size: 0.78rem; min-height: 1em; margin-top: 4px; }
.form-note { margin: 12px 0 0; font-size: 0.92rem; color: var(--primary); font-weight: 500; }

/* ===== 表单增强：校验态 / 同意 / 蜜罐 / 反馈 / 成功页 ===== */
.field input.invalid, .field textarea.invalid { border-color: #ef4444; box-shadow: 0 0 0 3px rgba(239,68,68,0.15); }
.consent { margin-top: 4px; }
.checkbox { display: flex; align-items: flex-start; gap: 10px; font-size: 0.88rem; color: var(--muted); line-height: 1.5; cursor: pointer; }
.checkbox input { width: 18px; height: 18px; margin: 2px 0 0; flex: none; accent-color: var(--primary); cursor: pointer; }
.checkbox a { color: var(--primary); text-decoration: none; }
.checkbox a:hover { text-decoration: underline; }
.hp { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.char-count { font-size: 0.74rem; color: var(--muted); text-align: right; margin-top: 4px; }
.char-count.over { color: #dc2626; }
.form-status { margin: 12px 0 0; font-size: 0.92rem; font-weight: 500; min-height: 1.2em; }
.form-status:empty { margin: 0; }
.form-status.error { color: #dc2626; }
.form-status.loading { color: var(--muted); }
.form-status.success { color: #059669; }
.btn.is-loading { opacity: 0.85; pointer-events: none; }
.btn .spinner { width: 16px; height: 16px; border: 2px solid rgba(255,255,255,0.45); border-top-color: #fff; border-radius: 50%; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.form-success { grid-column: 2; grid-row: 1; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 44px 32px; text-align: center; box-shadow: var(--shadow-sm); }
.form-success[hidden] { display: none; }
.form-success .success-ico { width: 64px; height: 64px; margin: 0 auto 16px; border-radius: 50%; background: rgba(5,150,105,0.12); color: #059669; font-size: 32px; line-height: 64px; font-weight: 700; }
.form-success h3 { color: var(--primary); margin-bottom: 8px; }
.form-success p { color: var(--muted); margin-bottom: 22px; }
@media (prefers-reduced-motion: reduce) { .btn .spinner { animation: none; } }

/* ===== 页脚 ===== */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-soft); padding-top: 64px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; padding-bottom: 44px; }
.footer-brand p { color: var(--muted); margin-top: 12px; font-size: 0.92rem; }
.footer-col h4 { font-size: 0.96rem; margin-bottom: 16px; }
.footer-col a { display: block; color: var(--muted); font-size: 0.92rem; padding: 5px 0; transition: color 0.2s; }
.footer-col a:hover { color: var(--primary); }
.footer-bottom { border-top: 1px solid var(--border); padding: 22px 0; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; color: var(--muted); font-size: 0.86rem; }
.footer-bottom a:hover { color: var(--primary); }

/* ===== 滚动渐显 ===== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* =========================================================
   响应式断点
   ========================================================= */
@media (max-width: 1024px) {
  .cards, .cases, .news { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: absolute; top: 74px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 4px;
    background: rgba(244,247,253,0.98); border-bottom: 1px solid var(--border);
    padding: 14px 20px 22px; transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: transform 0.3s var(--ease), opacity 0.3s;
    box-shadow: var(--shadow-md);
  }
  .nav-menu.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-menu a { padding: 12px 14px; }
  .nav-cta { text-align: center; }

  .hero { padding: 72px 0 60px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 26px 12px; }

  .section { padding: 72px 0; }
  .cards, .cases, .news { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .tab-panel.active { grid-template-columns: 1fr; }
  .arch { flex-direction: column; align-items: stretch; }
  .arch-arrow { transform: rotate(90deg); padding: 6px 0; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); gap: 30px 12px; }
  .contact { grid-template-columns: 1fr; gap: 32px; }
  .contact-form { grid-template-columns: 1fr; }
  .form-success { grid-column: 1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
}

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

/* =========================================================
   二级页面通用：页头横幅 / 面包屑 / 文档排版 / CTA
   ========================================================= */

/* 页头横幅（有机流体点缀） */
.page-hero {
  position: relative; padding: 100px 0 68px; overflow: hidden;
  background: linear-gradient(160deg, var(--bg-tint) 0%, #ffffff 72%);
  border-bottom: 1px solid var(--border);
}
.page-hero::after {
  content: ""; position: absolute; right: -130px; top: -150px;
  width: 440px; height: 440px;
  border-radius: 46% 54% 50% 50% / 52% 48% 52% 48%;
  background: var(--grad); opacity: 0.13; filter: blur(10px);
}
.page-hero .container { position: relative; z-index: 1; }
.breadcrumb { display: flex; gap: 8px; align-items: center; font-size: 0.86rem; color: var(--muted); margin-bottom: 18px; flex-wrap: wrap; }
.breadcrumb a { color: var(--muted); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span.sep { opacity: 0.5; }
.page-hero h1 { font-size: clamp(2rem, 5vw, 3.1rem); letter-spacing: -0.6px; margin: 0 0 14px; }
.page-hero p { color: var(--muted); font-size: clamp(1rem, 2.2vw, 1.18rem); max-width: 680px; margin: 0; }

/* 文档排版（隐私/条款页） */
.doc { max-width: 860px; margin: 0 auto; }
.doc h2 { font-size: 1.5rem; margin-top: 40px; }
.doc h3 { font-size: 1.16rem; margin-top: 26px; color: var(--primary); }
.doc p, .doc li { color: var(--muted); }
.doc ul { padding-left: 22px; }
.doc ul li { margin-bottom: 8px; }
.doc .updated { color: var(--text); font-weight: 600; }

/* 双栏图文（关于页、产品页复用） */
.split { display: grid; grid-template-columns: 1.1fr 1fr; gap: 52px; align-items: center; }
.split.reverse { direction: rtl; }
.split.reverse > * { direction: ltr; }
.feature-list { list-style: none; padding: 0; margin: 18px 0 0; }
.feature-list li { padding-left: 30px; position: relative; margin-bottom: 14px; color: var(--muted); }
.feature-list li::before {
  content: ""; position: absolute; left: 0; top: 7px; width: 18px; height: 18px; border-radius: 50%;
  background: var(--grad); opacity: 0.18;
}
.feature-list li strong { color: var(--text); }

/* 时间轴（发展历程） */
.timeline { list-style: none; padding: 0; margin: 0; position: relative; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 6px; bottom: 6px; width: 2px; background: var(--border-strong); }
.timeline li { position: relative; padding: 0 0 28px 40px; }
.timeline li::before {
  content: ""; position: absolute; left: 3px; top: 6px; width: 14px; height: 14px; border-radius: 50%;
  background: #fff; border: 3px solid var(--primary);
}
.timeline .year { font-weight: 700; color: var(--primary); font-size: 1.05rem; }
.timeline h4 { margin: 4px 0 6px; font-size: 1.05rem; }
.timeline p { margin: 0; color: var(--muted); font-size: 0.94rem; }

/* 产品矩阵卡片 */
.product-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.product-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px 30px; transition: transform 0.3s var(--ease), border-color 0.3s, box-shadow 0.3s;
}
.product-card:hover { transform: translateY(-6px); border-color: transparent; box-shadow: var(--shadow-md); }
.product-card .pc-ico {
  width: 54px; height: 54px; border-radius: 16px; display: grid; place-items: center;
  background: var(--grad-soft); border: 1px solid var(--border); margin-bottom: 18px;
  color: var(--primary);
  transition: color 0.3s, background 0.3s, border-color 0.3s;
}
.product-card:hover .pc-ico { color: #a9840a; background: rgba(251,205,8,0.14); border-color: rgba(251,205,8,0.45); }
.product-card .pc-ico svg { width: 28px; height: 28px; }
.product-card h3 { font-size: 1.2rem; }
.product-card p { color: var(--muted); margin: 8px 0 0; font-size: 0.94rem; }

/* CTA 横幅 */
.cta-banner {
  position: relative; overflow: hidden;
  background: var(--grad); border-radius: 32px; padding: 60px 40px; text-align: center; color: #fff;
  margin: 0 auto; max-width: var(--maxw); box-shadow: var(--shadow-md);
}
.cta-banner::after { content: ""; position: absolute; left: -80px; bottom: -120px; width: 280px; height: 280px; border-radius: 50%; background: radial-gradient(circle at 50% 50%, rgba(251,205,8,0.5), rgba(251,205,8,0) 70%); filter: blur(4px); pointer-events: none; }
.cta-banner h2 { color: #fff; font-size: clamp(1.6rem, 4vw, 2.3rem); margin-bottom: 12px; }
.cta-banner p { color: rgba(255,255,255,0.92); max-width: 560px; margin: 0 auto 28px; }
.cta-banner .btn-ghost { background: #fff; border-color: #fff; color: var(--text); position: relative; z-index: 1; }
.cta-banner .btn-ghost:hover { transform: translateY(-2px); }
.cta-wrap { padding: 0 24px 92px; }

/* 响应式补充 */
@media (max-width: 768px) {
  .split, .split.reverse { grid-template-columns: 1fr; gap: 28px; direction: ltr; }
  .product-grid { grid-template-columns: 1fr; }
  .cta-banner { padding: 42px 24px; }
}


/* =========================================================
   文章 / 案例详情页（详情页专用）
   ========================================================= */
.news-date { display:inline-block; color: var(--primary); font-weight:600; letter-spacing:1px; margin-top:6px; }
.prose { max-width: 760px; margin: 0 auto; }
.prose .lead { font-size: 1.16rem; color: var(--text); margin: 0 0 18px; line-height: 1.8; }
.prose p { color: var(--muted); line-height: 1.95; margin: 0 0 16px; }
.prose h2 { font-size: 1.3rem; margin: 30px 0 10px; color: var(--text); }
.case-hero-metric { display: flex; align-items: baseline; gap: 10px; margin: 8px 0 4px; }
.case-hero-metric strong { font-size: 2.6rem; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.case-hero-metric span { color: var(--muted); font-size: 0.95rem; }
.check { list-style: none; padding: 0; display: grid; gap: 10px; margin: 0 0 8px; }
.check li { position: relative; padding-left: 28px; color: var(--muted); line-height: 1.7; }
.check li::before { content: ""; position: absolute; left: 4px; top: 7px; width: 14px; height: 8px; border-left: 2px solid var(--primary); border-bottom: 2px solid var(--primary); transform: rotate(-45deg); }
.related { max-width: 760px; margin: 36px auto 0; border-top: 1px solid var(--border); padding-top: 20px; }
.related h3 { font-size: 1.05rem; margin-bottom: 10px; color: var(--text); }
.related ul { list-style: none; padding: 0; display: grid; gap: 8px; }
.related a { color: var(--primary); text-decoration: none; }
.related a:hover { text-decoration: underline; }

/* 列表卡片进入详情的链接 */
.news-more, .case-more {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 14px; font-weight: 600; font-size: 0.9rem;
  color: var(--primary); text-decoration: none;
  transition: gap 0.2s var(--ease);
}
.news-more:hover, .case-more:hover { text-decoration: underline; gap: 11px; }