/* ============================================
   ProsperousWise 盛海睿智 — 全站样式
   金融深蓝 + 香槟金，专业稳重的视觉基调
   ============================================ */

:root {
  --navy-900: #081833;
  --navy-800: #0E2A52;
  --navy-700: #1B3A6B;
  --blue-500: #3E7CB1;
  --blue-300: #7FA8D9;
  --gold-500: #C9A227;
  --gold-400: #D9B94E;
  --gold-300: #E8D189;
  --ink-900: #14213D;
  --ink-600: #44506B;
  --ink-400: #7A86A0;
  --bg-light: #F5F7FB;
  --bg-white: #FFFFFF;
  --line: #E3E8F1;
  --radius-lg: 16px;
  --radius-md: 10px;
  --shadow-card: 0 6px 24px rgba(14, 42, 82, 0.08);
  --shadow-lift: 0 14px 40px rgba(14, 42, 82, 0.16);
  --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", Arial, sans-serif;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-stack);
  color: var(--ink-900);
  background: var(--bg-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); color: var(--ink-900); }
h3 { font-size: 1.15rem; }

.container { width: min(1180px, 92%); margin: 0 auto; }

.section { padding: 92px 0; }
.section-head { max-width: 640px; margin: 0 auto 56px; text-align: center; }
.section-head h2 { margin-bottom: 14px; }
.section-sub { color: var(--ink-600); font-size: 1.02rem; }

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  font-weight: 700;
  color: var(--gold-500);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.eyebrow-light { color: var(--gold-400); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 13px 30px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: linear-gradient(135deg, var(--gold-500), var(--gold-400));
  color: var(--navy-900);
  box-shadow: 0 6px 18px rgba(201, 162, 39, 0.35);
}
.btn-primary:hover { box-shadow: 0 10px 26px rgba(201, 162, 39, 0.45); }

.btn-gold {
  background: linear-gradient(135deg, var(--gold-500), var(--gold-400));
  color: var(--navy-900);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.btn-ghost {
  border: 1.5px solid rgba(255, 255, 255, 0.55);
  color: #fff;
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.12); border-color: #fff; }

.btn-sm { padding: 9px 20px; font-size: 0.88rem; }

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible { opacity: 1; transform: none; }

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

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 0;
  transition: padding 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
}
.site-header.is-scrolled {
  padding: 10px 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 16px rgba(14, 42, 82, 0.1);
}

.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { display: flex; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 1.06rem; color: #fff; letter-spacing: 0.01em; transition: color 0.3s; }
.brand-text small { font-size: 0.72rem; color: rgba(255, 255, 255, 0.75); letter-spacing: 0.3em; transition: color 0.3s; }
.site-header.is-scrolled .brand-text strong { color: var(--navy-800); }
.site-header.is-scrolled .brand-text small { color: var(--ink-400); }
.site-header:not(.is-scrolled) .brand-text strong { color: #fff; }

.main-nav ul { display: flex; gap: 34px; }
.main-nav a {
  position: relative;
  font-size: 0.95rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.88);
  padding: 6px 0;
  transition: color 0.25s;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 2px;
  background: var(--gold-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.main-nav a:hover::after, .main-nav a.active::after { transform: scaleX(1); }
.main-nav a:hover, .main-nav a.active { color: #fff; }
.site-header.is-scrolled .main-nav a { color: var(--ink-600); }
.site-header.is-scrolled .main-nav a:hover,
.site-header.is-scrolled .main-nav a.active { color: var(--navy-800); }

.header-actions { display: flex; align-items: center; gap: 14px; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 6px; }
.nav-toggle span { width: 22px; height: 2px; background: #fff; border-radius: 2px; transition: 0.3s; }
.site-header.is-scrolled .nav-toggle span { background: var(--navy-800); }
.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 ---------- */
.hero {
  position: relative;
  padding: 170px 0 110px;
  background: linear-gradient(160deg, var(--navy-900) 0%, var(--navy-800) 55%, var(--navy-700) 100%);
  color: #fff;
  overflow: hidden;
}

.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 80% at 60% 20%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 60% 20%, #000 40%, transparent 100%);
}
.hero-glow { position: absolute; border-radius: 50%; filter: blur(90px); }
.hero-glow-1 { width: 520px; height: 520px; right: -120px; top: -140px; background: rgba(62, 124, 177, 0.4); }
.hero-glow-2 { width: 420px; height: 420px; left: -160px; bottom: -180px; background: rgba(201, 162, 39, 0.22); }

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero-copy h1 {
  font-size: clamp(2rem, 4.4vw, 3.2rem);
  line-height: 1.22;
  margin-bottom: 22px;
}
.hero-copy .accent { color: var(--gold-400); }
.hero-copy .lead { color: rgba(255, 255, 255, 0.82); max-width: 560px; margin-bottom: 32px; font-size: 1.04rem; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 34px; }

.hero-points { display: flex; flex-direction: column; gap: 10px; }
.hero-points li { display: flex; align-items: center; gap: 10px; color: rgba(255, 255, 255, 0.78); font-size: 0.93rem; }
.hero-points svg { color: var(--gold-400); flex-shrink: 0; }

/* Hero 右侧仪表盘卡片 */
.hero-visual { position: relative; }

.dashboard-card {
  position: relative;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-lg);
  padding: 22px 22px 18px;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-lift);
}
.dc-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.dc-title { font-size: 0.92rem; font-weight: 600; color: rgba(255, 255, 255, 0.92); }
.dc-live {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.14em; color: var(--gold-400);
}
.dc-live i {
  width: 7px; height: 7px; border-radius: 50%;
  background: #4ADE80;
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.8); }
}

.dc-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 16px;
}
.dc-metric {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 10px 12px;
}
.dc-metric span { display: block; font-size: 0.72rem; color: rgba(255, 255, 255, 0.6); margin-bottom: 2px; }
.dc-metric strong { font-size: 1.02rem; color: var(--gold-300); }

.float-chip {
  position: absolute;
  display: flex; align-items: center; gap: 8px;
  background: #fff;
  color: var(--navy-800);
  font-size: 0.82rem; font-weight: 600;
  padding: 10px 16px;
  border-radius: 999px;
  box-shadow: 0 10px 30px rgba(8, 24, 51, 0.35);
  animation: floaty 5s ease-in-out infinite;
}
.float-chip svg { color: var(--gold-500); }
.chip-1 { top: -22px; left: -18px; }
.chip-2 { bottom: -20px; right: -14px; animation-delay: 2.4s; }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

/* ---------- 数据带 ---------- */
.stats-band {
  background: var(--bg-white);
  border-bottom: 1px solid var(--line);
  padding: 44px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat strong {
  display: block;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--navy-800);
  letter-spacing: -0.02em;
}
.stat span { color: var(--ink-400); font-size: 0.9rem; }

/* ---------- 服务卡片 ---------- */
.services-preview { background: var(--bg-light); }

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.feature-card {
  background: var(--bg-white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lift);
  border-color: rgba(201, 162, 39, 0.45);
}

.card-icon {
  width: 52px; height: 52px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(62, 124, 177, 0.12), rgba(201, 162, 39, 0.12));
  color: var(--navy-800);
  margin-bottom: 20px;
}
.feature-card h3 { margin-bottom: 10px; }
.feature-card p { color: var(--ink-600); font-size: 0.94rem; flex: 1; }
.card-link {
  margin-top: 18px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gold-500);
  transition: color 0.2s, gap 0.2s;
  display: inline-flex; align-items: center; gap: 4px;
}
.card-link:hover { color: var(--navy-800); }

/* ---------- 数据安全区块 ---------- */
.security-preview {
  background: linear-gradient(160deg, var(--navy-900) 0%, var(--navy-800) 100%);
  color: #fff;
}
.section-split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}
.split-copy h2 { color: #fff; margin-bottom: 16px; }
.split-copy .section-sub { color: rgba(255, 255, 255, 0.78); margin-bottom: 28px; }
.split-copy .btn { margin-top: 8px; }

.check-list { display: flex; flex-direction: column; gap: 16px; margin-bottom: 30px; }
.check-list li {
  position: relative;
  padding-left: 30px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
}
.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0; top: 0;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: rgba(201, 162, 39, 0.2);
  color: var(--gold-400);
  font-size: 0.72rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.check-list strong { color: var(--gold-300); }

/* 盾牌视觉 */
.split-visual { display: flex; flex-direction: column; align-items: center; gap: 28px; }
.shield-card {
  position: relative;
  display: flex; align-items: center; justify-content: center;
  width: 300px; height: 300px;
}
.shield-ring {
  position: absolute;
  border: 1px solid rgba(201, 162, 39, 0.35);
  border-radius: 50%;
  animation: ringPulse 3.2s ease-in-out infinite;
}
.ring-1 { inset: 10px; }
.ring-2 { inset: -24px; animation-delay: 1.1s; border-color: rgba(62, 124, 177, 0.4); }
@keyframes ringPulse {
  0%, 100% { opacity: 0.9; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(1.04); }
}

.shield-badges { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; max-width: 420px; }
.shield-badges span {
  font-size: 0.8rem; font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.05);
}

/* ---------- 服务流程 ---------- */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
  counter-reset: step;
}
.process-steps > li {
  position: relative;
  background: var(--bg-white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.process-steps > li:hover { transform: translateY(-5px); box-shadow: var(--shadow-card); }
.step-num {
  display: inline-block;
  font-size: 2rem;
  font-weight: 800;
  color: rgba(201, 162, 39, 0.5);
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.process-steps h3 { margin-bottom: 8px; }
.process-steps p { color: var(--ink-600); font-size: 0.92rem; }

/* ---------- CTA ---------- */
.cta-section {
  background:
    radial-gradient(ellipse 60% 120% at 85% 50%, rgba(201, 162, 39, 0.16), transparent 60%),
    linear-gradient(135deg, var(--navy-800), var(--navy-900));
  padding: 72px 0;
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-inner h2 { color: #fff; margin-bottom: 8px; }
.cta-inner p { color: rgba(255, 255, 255, 0.78); }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-900); color: rgba(255, 255, 255, 0.72); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding: 64px 0 48px;
}
.brand-footer .brand-text strong { color: #fff; }
.brand-footer .brand-text small { color: rgba(255, 255, 255, 0.55); }
.footer-brand p { margin-top: 16px; font-size: 0.9rem; max-width: 300px; }
.footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; font-size: 0.88rem; }
.footer-col a { transition: color 0.2s; }
.footer-col a:hover { color: var(--gold-400); }

.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding: 20px 0; }
.footer-bottom .container {
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.footer-bottom p { font-size: 0.78rem; color: rgba(255, 255, 255, 0.5); }

/* ============================================
   子页面通用
   ============================================ */
.page-hero {
  padding: 168px 0 84px;
  background: linear-gradient(160deg, var(--navy-900) 0%, var(--navy-800) 60%, var(--navy-700) 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 90% at 50% 0%, #000 30%, transparent 90%);
  -webkit-mask-image: radial-gradient(ellipse 80% 90% at 50% 0%, #000 30%, transparent 90%);
  pointer-events: none;
}
.page-hero .container { position: relative; }
.page-hero h1 { font-size: clamp(1.9rem, 3.6vw, 2.8rem); margin-bottom: 14px; }
.page-hero .lead { color: rgba(255, 255, 255, 0.8); max-width: 640px; }
.breadcrumb { margin-bottom: 20px; font-size: 0.85rem; color: rgba(255, 255, 255, 0.55); }
.breadcrumb a { color: rgba(255, 255, 255, 0.75); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--gold-400); }

/* 详情页区块 */
.detail-section { padding: 80px 0; }
.detail-section.alt { background: var(--bg-light); }
.detail-block { max-width: 860px; }
.detail-block h2 { margin-bottom: 18px; }
.detail-block p { color: var(--ink-600); margin-bottom: 14px; }

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.mini-card {
  background: var(--bg-white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.mini-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); }
.mini-card h3 { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.mini-card h3 svg { color: var(--gold-500); flex-shrink: 0; }
.mini-card p { color: var(--ink-600); font-size: 0.93rem; }

/* 表格 */
.data-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.data-table th {
  text-align: left;
  background: var(--navy-800);
  color: #fff;
  padding: 13px 18px;
  font-weight: 600;
}
.data-table th:first-child { border-top-left-radius: var(--radius-md); }
.data-table th:last-child { border-top-right-radius: var(--radius-md); }
.data-table td { padding: 13px 18px; border-bottom: 1px solid var(--line); color: var(--ink-600); }
.data-table tbody tr:hover { background: var(--bg-light); }
.table-wrap { border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--line); }

/* 时间线（关于我们） */
.timeline { position: relative; padding-left: 30px; max-width: 720px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 8px; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold-500), var(--blue-500));
  border-radius: 2px;
}
.timeline-item { position: relative; padding-bottom: 34px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -29px; top: 6px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--gold-500);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--gold-500);
}
.timeline-item time { font-weight: 700; color: var(--navy-800); font-size: 1rem; }
.timeline-item h3 { font-size: 1.02rem; margin: 4px 0 6px; }
.timeline-item p { color: var(--ink-600); font-size: 0.92rem; }

/* 价值观卡片 */
.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.value-card {
  background: var(--bg-white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px 22px;
  text-align: center;
}
.value-card .card-icon { margin: 0 auto 14px; }
.value-card h3 { font-size: 1.02rem; margin-bottom: 6px; }
.value-card p { font-size: 0.85rem; color: var(--ink-600); }

/* 联系页 */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 48px; align-items: start; }

.contact-info { display: flex; flex-direction: column; gap: 20px; }
.info-card {
  display: flex; gap: 16px;
  background: var(--bg-white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px;
}
.info-card .card-icon { margin-bottom: 0; flex-shrink: 0; }
.info-card h3 { font-size: 0.98rem; margin-bottom: 4px; }
.info-card p { color: var(--ink-600); font-size: 0.9rem; }

.contact-form {
  background: var(--bg-white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 34px;
  box-shadow: var(--shadow-card);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 0.88rem; font-weight: 600; margin-bottom: 7px; }
.form-group label .req { color: #D64545; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  font: inherit;
  font-size: 0.92rem;
  color: var(--ink-900);
  background: var(--bg-light);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-md);
  padding: 11px 14px;
  transition: border-color 0.2s, background 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--blue-500);
  background: #fff;
}
.form-group textarea { resize: vertical; min-height: 110px; }
.form-group .error-msg { display: none; color: #D64545; font-size: 0.8rem; margin-top: 5px; }
.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea { border-color: #D64545; }
.form-group.has-error .error-msg { display: block; }
.form-success {
  display: none;
  background: #EAF7EF;
  border: 1px solid #BFE5CD;
  color: #1F7A45;
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-size: 0.92rem;
  margin-bottom: 18px;
}
.form-success.is-shown { display: block; }

/* FAQ */
.faq-list { max-width: 820px; }
.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
}
.faq-q {
  width: 100%;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  text-align: left;
  padding: 18px 22px;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--ink-900);
}
.faq-q::after {
  content: "+";
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--gold-500);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-a p { padding: 0 22px 20px; color: var(--ink-600); font-size: 0.93rem; }

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-inner { grid-template-columns: 1fr; gap: 56px; }
  .hero-visual { max-width: 560px; }
  .section-split { grid-template-columns: 1fr; gap: 48px; }
  .split-visual { order: -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 0; right: 0;
    height: 100vh;
    width: min(78vw, 320px);
    background: var(--navy-900);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    padding: 96px 34px;
    box-shadow: -12px 0 40px rgba(8, 24, 51, 0.35);
  }
  .main-nav.is-open { transform: translateX(0); }
  .main-nav ul { flex-direction: column; gap: 8px; }
  .main-nav a { display: block; padding: 12px 0; font-size: 1.05rem; color: rgba(255, 255, 255, 0.9); }
  .site-header.is-scrolled .main-nav a { color: rgba(255, 255, 255, 0.9); }
  .header-actions .btn { display: none; }

  .hero { padding: 132px 0 84px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .card-grid { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; text-align: center; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom .container { justify-content: center; text-align: center; }
  .float-chip { display: none; }
  .process-steps { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .values-grid { grid-template-columns: 1fr; }
  .dc-metrics { grid-template-columns: 1fr; }
  .contact-form { padding: 24px 20px; }
}