/* ============================================================
   叶子标盾 · 简约科技风设计系统
   Single-page 全站通用样式 · GEO 爬虫友好
   结构：设计令牌 → 基础 → 布局 → 头部 → Banner → 特性条 → 卡片 → 产品 → 关于 → 表格/插图 → 页脚 → 响应式
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root {
  --brand-blue: #2563EB;
  --brand-blue-deep: #1D4ED8;
  --brand-cyan: #22D3EE;
  --brand-cyan-soft: #7DD3FC;

  --space-900: #081224;
  --space-800: #0B1A33;
  --space-700: #12264A;

  --ink-900: #0F172A;
  --ink-700: #334155;
  --ink-600: #475569;
  --ink-500: #64748B;
  --line: #E7EBF3;
  --bg: #FFFFFF;
  --bg-soft: #F7F9FC;

  --radius-sm: 10px;
  --radius: 14px;
  --radius-lg: 20px;
  --radius-xl: 26px;

  --shadow-card: 0 1px 2px rgba(15,23,42,.04), 0 10px 30px rgba(15,23,42,.05);
  --shadow-lift: 0 6px 16px rgba(15,23,42,.06), 0 20px 48px rgba(37,99,235,.12);
  --glow-blue: 0 10px 24px rgba(37,99,235,.28);

  --grad-brand: linear-gradient(120deg, #2563EB 0%, #22D3EE 100%);
  --grad-cta: linear-gradient(120deg, #38BDF8 0%, #22D3EE 100%);

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

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: clip; /* 防止右侧悬浮卡片收起态溢出触发横向滚动条 */
}

body {
  font-family: var(--font-sans);
  color: var(--ink-900);
  background:
    radial-gradient(1000px 460px at 88% -120px, rgba(34,211,238,.06), transparent 60%),
    radial-gradient(900px 420px at 6% -80px, rgba(37,99,235,.05), transparent 55%),
    var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: rgba(34,211,238,.28); color: var(--ink-900); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: #C7D2E0; border-radius: 8px; border: 2px solid #fff; }
::-webkit-scrollbar-thumb:hover { background: #9FB0C8; }
::-webkit-scrollbar-track { background: transparent; }

a { color: inherit; text-decoration: none; transition: color .25s; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { padding-left: 22px; margin-bottom: 16px; }
li { margin-bottom: 10px; color: var(--ink-500); }
strong { color: var(--ink-900); font-weight: 700; }

a:focus-visible { outline: 2px solid var(--brand-cyan); outline-offset: 3px; border-radius: 6px; }
section[id] { scroll-margin-top: 92px; }

/* ---------- 3. 布局 ---------- */
.container {
  width: 92%;
  max-width: 1200px;
  margin: 0 auto;
}

main, article { width: 100%; }

section { padding: 88px 0; }

section h2 {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 34px;
  font-weight: 800;
  letter-spacing: .5px;
  color: var(--ink-900);
  margin-bottom: 52px;
  line-height: 1.3;
}

section h2::after {
  content: "";
  width: 56px;
  height: 3px;
  border-radius: 3px;
  margin-top: 16px;
  background: var(--grad-brand);
  box-shadow: 0 0 14px rgba(34,211,238,.5);
}

section h3 { font-size: 22px; font-weight: 750; color: var(--ink-900); margin: 28px 0 16px; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; align-items: stretch; }

/* ---------- 4. 头部导航 ---------- */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 99;
  background: rgba(255,255,255,.78);
  backdrop-filter: blur(20px) saturate(1.6);
  -webkit-backdrop-filter: blur(20px) saturate(1.6);
  border-bottom: 1px solid rgba(231,235,243,.85);
  padding: 13px 0;
}

header .container { display: flex; align-items: center; justify-content: space-between; gap: 18px; }

.brand { display: flex; align-items: center; height: 40px; }

.brand a { display: inline-flex; align-items: center; color: inherit; }

.brand h2 {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: .5px;
  line-height: 40px;
  color: var(--ink-900);
  white-space: nowrap;
}

.brand h2::before {
  content: none;
}

.brand-logo {
  width: 26px;
  height: 27px;
  flex-shrink: 0;
  display: block;
  filter: drop-shadow(0 3px 6px rgba(38,61,160,.22));
}

.main-nav { display: flex; align-items: center; height: 40px; }

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
  margin: 0; padding: 0;
  height: 40px;
}

.main-nav a {
  display: block;
  padding: 0 2px;
  font-size: 15px;
  font-weight: 600;
  line-height: 40px;
  color: var(--ink-500);
  position: relative;
  white-space: nowrap;
  transition: color .25s;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 6px;
  width: 0; height: 2px;
  border-radius: 2px;
  background: var(--grad-brand);
  transition: width .28s;
}

.main-nav a:hover { color: var(--brand-blue); }
.main-nav a:hover::after { width: 100%; }

.login-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 28px;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--brand-blue), var(--brand-blue-deep));
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  white-space: nowrap;
  box-shadow: var(--glow-blue);
  transition: transform .25s, box-shadow .25s;
}

.login-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(37,99,235,.4);
}

/* ---------- 5. 按钮系统（Banner 用） ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 14px 32px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15.5px;
  letter-spacing: .3px;
  white-space: nowrap;
  transition: transform .25s, box-shadow .25s, background .25s, color .25s, border-color .25s;
}

.btn-primary {
  background: linear-gradient(120deg, var(--brand-blue), var(--brand-blue-deep));
  color: #fff;
  box-shadow: var(--glow-blue);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(37,99,235,.42);
}

.btn-ghost {
  background: #fff;
  color: var(--ink-900);
  border: 1.5px solid var(--line);
  box-shadow: 0 4px 12px rgba(15,23,42,.04);
}

.btn-ghost:hover {
  transform: translateY(-2px);
  border-color: var(--brand-blue);
  color: var(--brand-blue);
  box-shadow: 0 10px 24px rgba(37,99,235,.12);
}

/* ---------- 6. Banner（Hero · 左文右图 · 浅色科技风） ---------- */
.hero {
  position: relative;
  padding: 156px 0 90px;
  background:
    radial-gradient(900px 480px at 100% 0%, rgba(34,211,238,.10), transparent 55%),
    radial-gradient(820px 460px at 0% 8%, rgba(37,99,235,.09), transparent 55%),
    #fff;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(15,23,42,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15,23,42,.025) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 14%, #000 100%);
  mask-image: linear-gradient(180deg, transparent 0%, #000 14%, #000 100%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 60px;
  align-items: center;
  text-align: left;
}

.hero-content { max-width: 560px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  background: rgba(37,99,235,.07);
  border: 1px solid rgba(37,99,235,.18);
  color: var(--brand-blue);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 22px;
}

.hero-badge .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--brand-cyan);
  box-shadow: 0 0 8px var(--brand-cyan);
}

.hero h1 {
  font-size: 46px;
  line-height: 1.25;
  font-weight: 900;
  letter-spacing: .5px;
  margin-bottom: 20px;
  color: var(--ink-900);
}

.hero h1 .hl {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero .hero-sub {
  font-size: 16.5px;
  color: var(--ink-500);
  line-height: 1.85;
  margin-bottom: 38px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* 右侧视觉区 */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-art-wrap {
  position: relative;
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
}

.hero-art {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 20px 40px rgba(37,99,235,.08));
}

.hero-image {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: 0 24px 60px rgba(15,23,42,.10), 0 6px 14px rgba(15,23,42,.04);
}

.hero-image img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 18px;
}

.floating-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--ink-900);
  box-shadow: 0 14px 36px rgba(15,23,42,.10);
  white-space: nowrap;
  z-index: 2;
}

.floating-card.fc-tl { top: 6%; left: -14px; }
.floating-card.fc-br { bottom: 6%; right: -14px; }

/* ---------- 7. 特性条（Banner 下方） ---------- */
.features-bar {
  padding: 0 0 92px;
  background: #fff;
}

.features-bar .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.features-intro {
  text-align: center;
  margin-bottom: 56px;
}

.features-intro h2 {
  font-size: 34px;
  font-weight: 800;
  color: var(--ink-900);
  margin-bottom: 14px;
  letter-spacing: .5px;
}

.features-intro p {
  font-size: 17px;
  color: var(--ink-500);
  line-height: 1.7;
  max-width: 640px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  width: 100%;
}

.feature-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: transform .35s, box-shadow .35s, border-color .35s;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(37,99,235,.25);
  box-shadow: var(--shadow-lift);
}

.feature-mockup {
  position: relative;
  margin-bottom: 24px;
}

.feature-mockup svg {
  display: block;
  width: 100%;
  height: auto;
}

.mockup-badge {
  position: absolute;
  top: -14px;
  right: 14px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  border: 2px solid #fff;
  box-shadow: 0 8px 20px rgba(15,23,42,.14);
}

.mockup-badge.blue   { background: linear-gradient(135deg, #2563EB, #3B82F6); }
.mockup-badge.purple { background: linear-gradient(135deg, #7C3AED, #8B5CF6); }
.mockup-badge.green  { background: linear-gradient(135deg, #059669, #10B981); }
.mockup-badge.orange { background: linear-gradient(135deg, #D97706, #F59E0B); }

.mockup-badge svg {
  width: 22px;
  height: 22px;
}

.feature-card h4 {
  font-size: 17px;
  font-weight: 750;
  color: var(--ink-900);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--ink-500);
  line-height: 1.75;
  margin: 0;
}

.features-cta {
  margin-top: 52px;
}

/* ---------- 8. 卡片与通用组件 ---------- */
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 28px;
  box-shadow: var(--shadow-card);
  transition: transform .3s, box-shadow .3s, border-color .3s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(37,99,235,.38);
  box-shadow: var(--shadow-lift);
}

.card h4 {
  position: relative;
  font-size: 17px;
  font-weight: 750;
  color: var(--ink-900);
  padding-left: 15px;
  margin-bottom: 12px;
}

.card h4::before {
  content: "";
  position: absolute;
  left: 0; top: 5px; bottom: 5px;
  width: 3px;
  border-radius: 2px;
  background: var(--grad-brand);
}

.card p { font-size: 14.5px; color: var(--ink-500); line-height: 1.8; margin: 0; }

/* ---------- 9. 产品展示（卡片网格 · 蓝色系） ---------- */
.products-header {
  text-align: center;
  margin-bottom: 56px;
}

.products-header h2 { margin-bottom: 14px; }

.products-sub {
  font-size: 17px;
  color: var(--ink-500);
  line-height: 1.7;
  max-width: 640px;
  margin: 0 auto;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

/* 产品卡片 */
.prod-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(15,23,42,.04), 0 12px 32px rgba(15,23,42,.05);
  transition: transform .35s cubic-bezier(.22,1,.36,1), box-shadow .35s, border-color .35s;
}

.prod-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-blue-deep), var(--brand-blue), var(--brand-cyan));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s cubic-bezier(.22,1,.36,1);
}

.prod-card:hover {
  transform: translateY(-6px);
  border-color: rgba(37,99,235,.25);
  box-shadow: 0 8px 24px rgba(15,23,42,.08), 0 24px 56px rgba(37,99,235,.14);
}

.prod-card:hover::before { transform: scaleX(1); }

/* 卡片头部 */
.prod-card-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 22px 24px 0;
}

.prod-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--brand-blue-deep), var(--brand-blue));
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(37,99,235,.3);
}

.prod-card-head h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--ink-900);
  margin: 0;
  flex: 1;
  letter-spacing: .3px;
}

.prod-ico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px; height: 34px;
  border-radius: 9px;
  background: rgba(37,99,235,.07);
  border: 1px solid rgba(37,99,235,.12);
  color: var(--brand-blue);
  flex-shrink: 0;
}

.prod-ico svg { width: 18px; height: 18px; }

/* 截图区 */
.prod-card-shot {
  margin: 18px 24px;
  border-radius: 12px;
  background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
  border: 1px solid rgba(37,99,235,.08);
  padding: 14px;
}

.prod-card-shot img {
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 6px 20px rgba(15,23,42,.08);
}

/* 2 图并排 */
.prod-shot-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.prod-shot-pair img {
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 6px 20px rgba(15,23,42,.08);
}

/* 正文 + 按钮 */
.prod-card-body {
  padding: 0 24px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.prod-card-body p {
  font-size: 14px;
  color: var(--ink-500);
  line-height: 1.85;
  margin: 0 0 20px;
  flex: 1;
}

/* 全宽卡（AI编标） */
.prod-card-wide {
  grid-column: 1 / -1;
}

.prod-wide-body {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 28px;
  padding: 18px 24px 24px;
  align-items: start;
}

.prod-wide-shots {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.prod-wide-shots img {
  width: 100%;
  border-radius: 10px;
  box-shadow: 0 6px 20px rgba(15,23,42,.08);
}

.prod-wide-info {
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding-top: 4px;
}

.prod-wide-info p {
  font-size: 14.5px;
  color: var(--ink-500);
  line-height: 2;
  margin: 0;
}

/* 立即试用按钮 */
.btn-trial {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 11px 30px;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--brand-blue), var(--brand-blue-deep));
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  white-space: nowrap;
  box-shadow: 0 6px 18px rgba(37,99,235,.28);
  transition: transform .25s, box-shadow .25s;
  align-self: flex-start;
}

.btn-trial:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(37,99,235,.38);
}

/* ---------- 10. 关于我们（左文右图 · 扁平化插画） ---------- */
#about {
  background: linear-gradient(180deg, #fff 0%, #F8FAFF 100%);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

/* 左侧文字 */
.about-text { max-width: 500px; }

.about-tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(37,99,235,.07);
  border: 1px solid rgba(37,99,235,.18);
  color: var(--brand-blue);
  font-size: 12.5px;
  font-weight: 600;
  margin-bottom: 22px;
}

.about-tag::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--brand-cyan);
  box-shadow: 0 0 6px var(--brand-cyan);
}

.about-text h2 {
  display: block;
  font-size: 38px;
  font-weight: 900;
  line-height: 1.28;
  color: var(--ink-900);
  margin-bottom: 24px;
  letter-spacing: .3px;
}

.about-text h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  border-radius: 3px;
  margin-top: 18px;
  background: var(--grad-brand);
  box-shadow: 0 0 12px rgba(34,211,238,.45);
}

.about-lead {
  font-size: 15.5px;
  color: var(--ink-500);
  line-height: 2;
  margin-bottom: 36px;
}

/* 数据指标 */
.about-stats {
  display: flex;
  gap: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.about-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.about-stat-num {
  font-size: 30px;
  font-weight: 900;
  color: var(--brand-blue);
  line-height: 1;
  display: flex;
  align-items: baseline;
}

.about-stat-num .plus {
  font-size: 15px;
  font-weight: 700;
  margin-left: 2px;
  color: var(--brand-cyan);
}

.about-stat-label {
  font-size: 12.5px;
  color: var(--ink-500);
  font-weight: 500;
}

/* 右侧插画 */
.about-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.about-illustration {
  width: 100%;
  max-width: 480px;
  height: auto;
  filter: drop-shadow(0 20px 48px rgba(37,99,235,.12));
  animation: aboutFloat 6s ease-in-out infinite;
}

@keyframes aboutFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ---------- 10b. FAQ 常见问题 ---------- */
.faq-header {
  text-align: center;
  margin-bottom: 48px;
}

.faq-header h2 { margin-bottom: 14px; }

.faq-sub {
  font-size: 17px;
  color: var(--ink-500);
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.faq-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px 26px;
  box-shadow: var(--shadow-card);
  transition: transform .35s, box-shadow .35s, border-color .35s;
  position: relative;
  overflow: hidden;
}

.faq-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 3px;
  height: 100%;
  background: var(--grad-brand);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .4s;
}

.faq-card:hover {
  transform: translateY(-5px);
  border-color: rgba(37,99,235,.22);
  box-shadow: var(--shadow-lift);
}

.faq-card:hover::before { transform: scaleY(1); }

.faq-q-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(37,99,235,.10), rgba(34,211,238,.08));
  border: 1px solid rgba(37,99,235,.15);
  color: var(--brand-blue);
  margin-bottom: 18px;
}

.faq-q-mark svg {
  width: 24px;
  height: 24px;
}

.faq-card-body h4 {
  font-size: 16px;
  font-weight: 750;
  color: var(--ink-900);
  margin-bottom: 10px;
  line-height: 1.4;
}

.faq-card-body p {
  font-size: 14px;
  color: var(--ink-500);
  line-height: 1.8;
  margin: 0;
}

/* ---------- 10c. 联系我们 ---------- */
#contact { background: #fff; }

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
  align-items: center;
}

/* 左侧品牌信息 */
.contact-main { display: flex; flex-direction: column; gap: 22px; }

.contact-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.contact-logo {
  width: 42px;
  height: 44px;
  flex-shrink: 0;
  filter: drop-shadow(0 6px 16px rgba(38,61,160,.28));
}

.contact-brand h3 {
  font-size: 26px;
  font-weight: 800;
  color: var(--ink-900);
  letter-spacing: .5px;
  margin: 0;
}

.contact-desc {
  max-width: 520px;
  font-size: 15px;
  color: var(--ink-500);
  line-height: 1.9;
  margin: 0;
}

.contact-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--ink-900);
  margin: 8px 0 0;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15.5px;
  color: var(--ink-700);
  margin: 0;
}

.contact-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(37,99,235,.08);
  color: var(--brand-blue);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon svg { width: 18px; height: 18px; }

/* 右侧二维码 */
.contact-qrs {
  display: flex;
  justify-content: flex-end;
  gap: 28px;
}

.qr-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
  box-shadow: var(--shadow-card);
  text-align: center;
  margin: 0;
  transition: transform .3s, box-shadow .3s, border-color .3s;
}

.qr-card:hover {
  transform: translateY(-5px);
  border-color: rgba(37,99,235,.25);
  box-shadow: var(--shadow-lift);
}

.qr-card img {
  width: 140px;
  height: 140px;
  border-radius: 10px;
  object-fit: contain;
}

.qr-card figcaption {
  margin-top: 12px;
  font-size: 13.5px;
  color: var(--ink-500);
  font-weight: 600;
}

/* ---------- 11. 表格与插图 ---------- */
table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 24px 0;
}

th, td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line); }
th { background: var(--bg-soft); font-weight: 800; color: var(--ink-900); }
td { color: var(--ink-500); }
tr:last-child td { border-bottom: none; }

figure { margin: 52px 0 0; text-align: center; }

figure img {
  border-radius: 20px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
}

figcaption {
  margin-top: 16px;
  font-size: 14px;
  color: var(--ink-500);
}

/* ---------- 11b. 四层技术架构（全宽浅蓝背景 · 左图右文） ---------- */
.tech-arch {
  margin-top: 72px;
  padding: 56px 0 64px;
  background: linear-gradient(135deg, #F5F9FF 0%, #EFF6FF 100%);
}

.tech-arch-inner {
  width: 92%;
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.tech-arch-visual { display: flex; align-items: center; justify-content: center; }

.tech-arch-art {
  display: block;
  width: 100%;
  max-width: 460px;
  height: auto;
  filter: drop-shadow(0 16px 36px rgba(37,99,235,.10));
}

.tech-arch-tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(37,99,235,.08);
  border: 1px solid rgba(37,99,235,.18);
  color: #2563EB;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

.tech-arch-info h3 {
  font-size: 26px;
  font-weight: 800;
  color: var(--ink-900);
  margin-bottom: 14px;
}

.tech-arch-lead {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-500);
  margin-bottom: 24px;
}

.tech-arch-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 14px; }
.tech-arch-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 14px 16px;
  background: #fff;
  border: 1px solid #E2E8F0;
  border-radius: 14px;
  transition: border-color .25s, box-shadow .25s, transform .25s;
}
.tech-arch-list li:hover {
  border-color: #BFDBFE;
  box-shadow: 0 8px 24px rgba(37,99,235,.08);
  transform: translateY(-2px);
}
.tech-arch-num {
  flex-shrink: 0;
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px;
  background: linear-gradient(135deg, #DBEAFE, #BFDBFE);
  color: #1D4ED8;
  font-size: 13px; font-weight: 800;
  font-family: -apple-system, sans-serif;
}
.tech-arch-list li strong { color: #1D4ED8; font-weight: 700; }
.tech-arch-list li div { font-size: 14px; line-height: 1.7; color: var(--ink-500); }

@media (max-width: 860px) {
  .tech-arch-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .tech-arch { padding: 40px 0 48px; }
}

/* ---------- 11c. 合作代理 ---------- */
#agency {
  padding: 80px 0;
  background: linear-gradient(180deg, #F8FBFF 0%, #fff 100%);
}

.agency-header {
  text-align: center;
  margin-bottom: 52px;
}

.agency-eyebrow {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(37,99,235,.08);
  border: 1px solid rgba(37,99,235,.18);
  color: #2563EB;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 1.5px;
  margin-bottom: 18px;
}

.agency-header h2 {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 34px;
  font-weight: 800;
  letter-spacing: .5px;
  color: var(--ink-900);
  margin-bottom: 18px;
  line-height: 1.3;
}

.agency-header h2::after {
  content: "";
  width: 56px;
  height: 3px;
  border-radius: 3px;
  margin-top: 16px;
  background: var(--grad-brand);
  box-shadow: 0 0 14px rgba(34,211,238,.5);
}

.agency-sub {
  font-size: 16px;
  color: var(--ink-500);
  line-height: 1.8;
  max-width: 620px;
  margin: 0 auto;
}

.agency-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 48px;
}

.agency-card {
  padding: 36px 28px;
  background: #fff;
  border: 1px solid #E2E8F0;
  border-radius: 20px;
  transition: border-color .3s, box-shadow .3s, transform .3s;
}

.agency-card:hover {
  border-color: #93C5FD;
  box-shadow: 0 16px 40px rgba(37,99,235,.10);
  transform: translateY(-4px);
}

.agency-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  background: linear-gradient(135deg, #DBEAFE, #E0F2FE);
  color: #2563EB;
  margin-bottom: 20px;
}

.agency-icon svg { width: 28px; height: 28px; }

.agency-card h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--ink-900);
  margin-bottom: 12px;
}

.agency-card > p {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-500);
  margin-bottom: 20px;
}

.agency-bullets {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.agency-bullets li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: #475569;
  font-weight: 500;
}

.agency-bullets li::before {
  content: "";
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #DBEAFE;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232563EB' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20,6 9,17 4,12'/%3E%3C/svg%3E");
  background-size: 12px;
  background-repeat: no-repeat;
  background-position: center;
}

.agency-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 40px 48px;
  background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
  border-radius: 24px;
}

.agency-cta-text h3 {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 8px;
}

.agency-cta-text p {
  font-size: 15px;
  color: rgba(255,255,255,.85);
  line-height: 1.7;
}

.agency-cta-btn {
  flex-shrink: 0;
  padding: 16px 36px;
  border-radius: 12px;
  background: #fff;
  color: #2563EB;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  transition: transform .25s, box-shadow .25s;
}

.agency-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0,0,0,.18);
}

@media (max-width: 860px) {
  .agency-grid { grid-template-columns: 1fr; }
  .agency-cta { flex-direction: column; text-align: center; padding: 32px 24px; }
}

/* ---------- 12. 页脚（浅蓝色系 · 两行布局） ---------- */
footer {
  position: relative;
  background: linear-gradient(180deg, #F5F9FF 0%, #EFF6FF 100%);
  color: #64748B;
  padding: 36px 0;
  font-size: 14px;
  border-top: 1px solid #E5E7EB;
}

footer::before {
  content: none;
}

footer .container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  text-align: center;
}

.footer-copy {
  color: #64748B;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 8px;
  row-gap: 6px;
}
.footer-copy .footer-dot { color: #94A3B8; font-size: 14px; }

.footer-beian {
  color: #64748B;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  transition: color .25s;
}
.footer-beian:hover { color: #2563EB; }
.footer-beian-ico {
  float: none;
  margin: 0 4px 0 0;
  width: 1.2em;
  height: 1.2em;
  object-fit: contain;
}

footer nav { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; align-items: center; }
footer nav a { color: #2563EB; text-decoration: none; transition: color .25s; }
footer nav a:hover { color: #0891B2; }
.footer-sep { color: #BFDBFE; }

/* ---------- 13. 响应式 ---------- */
@media (max-width: 1024px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }

  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  .hero-content { margin: 0 auto; }
  .hero-actions { justify-content: center; }
  .hero h1 { font-size: 34px; }
  .hero-art-wrap { max-width: 360px; }
  .floating-card { display: none; }

  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .features-intro h2 { font-size: 28px; }

  header .container { flex-wrap: wrap; justify-content: center; gap: 10px 18px; }
  .main-nav ul { gap: 18px; }
  .main-nav a { font-size: 14px; }

  /* 产品卡片：2 列 → 1 列 */
  .products-grid { grid-template-columns: 1fr; }
  .prod-wide-body { grid-template-columns: 1fr; }
  .prod-wide-shots { grid-template-columns: repeat(3, 1fr); }

  /* 团队介绍：左右 → 上下 */
  .about-grid { grid-template-columns: 1fr; gap: 44px; }
  .about-text { max-width: none; }
  .about-text h2 { font-size: 30px; }

  /* FAQ：3 列 → 2 列 */
  .faq-grid { grid-template-columns: repeat(2, 1fr); }

  /* 联系区域：左右 → 上下 */
  .contact-grid { grid-template-columns: 1fr; gap: 44px; text-align: center; }
  .contact-main { align-items: center; }
  .contact-desc { max-width: 600px; }
  .contact-list { align-items: center; }
  .contact-qrs { justify-content: center; }

  .hero { padding-top: 170px; }
  section { padding: 68px 0; }
  section h2 { font-size: 28px; }
}

@media (max-width: 640px) {
  .features-grid { grid-template-columns: 1fr; }
  .features-intro h2 { font-size: 24px; }
  .features-intro p { font-size: 15px; }
  .hero h1 { font-size: 27px; }
  .hero .hero-sub { font-size: 14.5px; }
  .hero-art-wrap { max-width: 300px; }
  .brand h2 { font-size: 16px; }
  .login-btn { height: 36px; padding: 0 20px; font-size: 13px; }
  .container { width: 90%; }
  section { padding: 56px 0; }
  .features-bar { padding-bottom: 64px; }
  .btn { padding: 12px 26px; font-size: 14.5px; }

  /* 手机端画廊变 1 列 */
  .prod-wide-shots { grid-template-columns: 1fr; }
  .prod-shot-pair { grid-template-columns: 1fr; }
  .prod-card-head h3 { font-size: 16px; }
  .prod-num { width: 32px; height: 32px; font-size: 12px; }
  .prod-ico { width: 30px; height: 30px; }

  /* 手机端团队介绍 */
  .about-stats { gap: 24px; flex-wrap: wrap; }
  .about-stat-num { font-size: 26px; }
  .about-text h2 { font-size: 26px; }
  .about-lead { font-size: 14.5px; }

  /* 手机端 FAQ → 1 列 */
  .faq-grid { grid-template-columns: 1fr; }

  /* 手机端二维码竖排 */
  .contact-qrs { flex-direction: column; align-items: center; gap: 24px; }
  .qr-card img { width: 150px; height: 150px; }
  .contact-brand h3 { font-size: 22px; }
  .contact-desc { font-size: 14px; }

  /* 手机端隐藏右侧悬浮卡片，避免遮挡 */
  .float-contact { display: none; }
}

/* ============================================================
   11. 右侧悬浮联系方式（贴边收起 / hover 展开 / 点击咨询唤起微信）
   ============================================================ */
.float-contact {
  position: fixed;
  right: 0;
  top: 50%;
  z-index: 90;
  display: flex;
  align-items: stretch;
  /* 只做垂直居中，不左右移动 —— 把手始终钉在右缘 */
  transform: translateY(-50%);
  animation: fcFadeIn .6s ease-out .3s backwards;
}
@keyframes fcFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* 收起态窄条（把手）—— 贴屏幕右缘，默认可见：微信图标 + 竖排「咨询」 */
.float-contact-tab {
  order: 2;
  width: 48px;
  flex-shrink: 0;
  background: linear-gradient(180deg, #2563EB 0%, #22D3EE 100%);
  color: #fff;
  border-radius: 14px 0 0 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 0;
  cursor: pointer;
  box-shadow: -4px 6px 18px rgba(37,99,235,.30);
  transition: filter .25s ease;
  user-select: none;
}
.float-contact:hover .float-contact-tab { filter: brightness(1.06); }
.float-contact-tab svg { width: 22px; height: 22px; }
.float-contact-tab span {
  writing-mode: vertical-rl;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
}

/* 展开卡片 —— 默认 translateX(100%) 藏到屏幕右侧外，hover 时滑回原位 */
.float-contact-card {
  order: 1;
  width: 196px;
  flex-shrink: 0;
  background: #fff;
  border-top: 1px solid rgba(37,99,235,.10);
  border-bottom: 1px solid rgba(37,99,235,.10);
  border-radius: 18px 0 0 18px;
  padding: 16px 14px 18px;
  text-align: center;
  box-shadow:
    0 1px 2px rgba(15,23,42,.04),
    -8px 12px 36px rgba(37,99,235,.16),
    -4px 4px 12px rgba(15,23,42,.06);
  /* 收起态：卡片向右平移自身宽度 → 藏到屏幕外 */
  transform: translateX(100%);
  opacity: 0;
  pointer-events: none;
  transition: transform .4s cubic-bezier(.22,.61,.36,1), opacity .35s ease;
}
/* hover / focus / 强制展开 → 卡片滑回 */
.float-contact:hover .float-contact-card,
.float-contact:focus-within .float-contact-card,
.float-contact.is-open .float-contact-card {
  transform: translateX(0);
  opacity: 1;
  pointer-events: auto;
}

/* 二维码 */
.float-contact-qr {
  width: 100%;
  aspect-ratio: 1 / 1;
  background: linear-gradient(135deg, #F7F9FC 0%, #EFF6FF 100%);
  border-radius: 10px;
  padding: 8px;
  margin-bottom: 14px;
  border: 1px solid rgba(37,99,235,.08);
}
.float-contact-qr img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  border-radius: 4px;
}

/* 蓝色渐变按钮 */
.float-contact-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 10px 0;
  background: linear-gradient(120deg, #38BDF8 0%, #2563EB 100%);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .5px;
  border-radius: 999px;
  box-shadow: 0 6px 16px rgba(37,99,235,.32);
  transition: transform .22s ease, box-shadow .25s ease, filter .25s ease;
}
.float-contact-btn svg { width: 18px; height: 18px; }
.float-contact-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(37,99,235,.44);
  filter: brightness(1.05);
}
.float-contact-btn:active { transform: translateY(0); }

/* 提示文字 */
.float-contact-tip {
  margin: 12px 0 4px;
  font-size: 12.5px;
  color: #64748B;
  line-height: 1.55;
}

/* 大屏：把手与卡片略宽（translateX(100%) 自适应宽度，无需手调） */
@media (min-width: 1280px) {
  .float-contact-tab { width: 52px; }
  .float-contact-card { width: 208px; }
}

/* 平板 / 小屏：保持默认尺寸，避免遮挡正文 */
@media (max-width: 1100px) {
  .float-contact-card { padding: 12px 10px 14px; }
  .float-contact-btn { font-size: 13px; padding: 8px 0; }
  .float-contact-tip { font-size: 11.5px; }
  .float-contact-tab span { font-size: 12px; }
}

/* ============================================================
   11b. 客服咨询 · 大二维码弹窗（「点击咨询」触发）
   ============================================================ */
.fc-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
}
.fc-modal.show { display: flex; }
.fc-modal-mask {
  position: absolute;
  inset: 0;
  background: rgba(8,18,36,.55);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  animation: fcMaskIn .25s ease-out;
}
@keyframes fcMaskIn { from { opacity: 0; } to { opacity: 1; } }

.fc-modal-card {
  position: relative;
  background: #fff;
  border-radius: 20px;
  padding: 32px 36px 28px;
  width: 340px;
  max-width: 90vw;
  text-align: center;
  box-shadow: 0 24px 64px rgba(8,18,36,.30);
  animation: fcCardIn .35s cubic-bezier(.22,.61,.36,1);
}
@keyframes fcCardIn {
  from { opacity: 0; transform: translateY(20px) scale(.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.fc-modal-close {
  position: absolute;
  top: 12px; right: 12px;
  width: 32px; height: 32px;
  border: 0;
  background: #F1F5F9;
  color: #64748B;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s, color .2s;
}
.fc-modal-close:hover { background: #E2E8F0; color: #0F172A; }
.fc-modal-close svg { width: 16px; height: 16px; }

.fc-modal-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--ink-900);
  margin-bottom: 20px;
  letter-spacing: .3px;
}
.fc-modal-qr {
  width: 220px;
  height: 220px;
  margin: 0 auto 18px;
  padding: 10px;
  background: linear-gradient(135deg, #F7F9FC 0%, #EFF6FF 100%);
  border: 1px solid rgba(37,99,235,.10);
  border-radius: 14px;
}
.fc-modal-qr img { width: 100%; height: 100%; object-fit: contain; display: block; }
.fc-modal-tip {
  font-size: 14px;
  color: var(--ink-700);
  margin-bottom: 6px;
}
.fc-modal-sub {
  font-size: 12.5px;
  color: var(--ink-500);
}

/* ============================================================
   合作代理 · 小助理微信二维码弹窗
   触发：导航「合作代理」；关闭：点击半透明蒙层 / 右上角 × / Esc
   ============================================================ */
.qr-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  visibility: hidden;
  opacity: 0;
  transition: opacity .28s ease, visibility .28s ease;
}

/* 半透明蒙层 */
.qr-modal-mask {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  cursor: pointer;
}

/* 弹窗卡片 */
.qr-modal-card {
  position: relative;
  z-index: 1;
  width: min(360px, 92vw);
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 80px rgba(15, 23, 42, .35), 0 0 0 1px rgba(37, 99, 235, .06);
  padding: 30px 28px 26px;
  text-align: center;
  transform: translateY(16px) scale(.96);
  transition: transform .28s cubic-bezier(.22, 1, .36, 1);
}

.qr-modal.show { visibility: visible; opacity: 1; }
.qr-modal.show .qr-modal-card { transform: translateY(0) scale(1); }

.qr-modal-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 17px;
  font-weight: 800;
  color: var(--ink-900);
  margin-bottom: 18px;
}

.qr-modal-title-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--grad-cta);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, .18);
}

.qr-modal-img {
  display: inline-block;
  padding: 10px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.qr-modal-img img {
  width: 220px;
  height: 220px;
  object-fit: contain;
  border-radius: 8px;
}

.qr-modal-tip {
  margin-top: 16px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink-700);
  line-height: 1.6;
}

.qr-modal-sub {
  margin-top: 6px;
  font-size: 12px;
  color: var(--ink-500);
}

/* 右上角关闭按钮 */
.qr-modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 50%;
  background: var(--bg-soft);
  color: var(--ink-500);
  cursor: pointer;
  transition: background .2s, color .2s, transform .2s;
}

.qr-modal-close svg { width: 14px; height: 14px; }
.qr-modal-close:hover { background: #EEF2FF; color: var(--brand-blue); transform: rotate(90deg); }

/* 手机端适配 */
@media (max-width: 480px) {
  .qr-modal-card { padding: 24px 18px 20px; }
  .qr-modal-img img { width: 190px; height: 190px; }
  .qr-modal-title { font-size: 15.5px; }
}

/* 动效削弱（无障碍） */
@media (prefers-reduced-motion: reduce) {
  .qr-modal, .qr-modal-card, .qr-modal-close { transition: none; }
}