/* ==========================================================================
   蓝寰科技官网 v2.0 · 设计系统样式 (Design Tokens & Components)
   依据《蓝寰科技官网"技术筑基"UI策划文档》四、视觉与信任感设计规范
   ========================================================================== */

:root {
  /* —— 品牌色彩系统 —— */
  --primary: #1A6B8A;            /* 主品牌色 科技蓝：导航栏、主按钮、重要标题 */
  --primary-dark: #14566F;
  --primary-light: #E7F1F5;
  --primary-deep: #0F4256;

  --secondary: #4CAF50;          /* 辅助色 生态绿：数据卡片、成功状态、绿色消费 */
  --secondary-dark: #3B8C3E;
  --secondary-light: #EAF7EB;

  --accent: #FF8C00;             /* 强调色 活力橙：CTA按钮、重点数据 */
  --accent-dark: #E07B00;
  --accent-light: #FFF3E0;

  --bg: #F5F7FA;                 /* 背景色 极浅灰：模块区隔背景 */
  --bg-soft: #EDF1F5;
  --surface: #FFFFFF;
  --text: #333333;               /* 正文字色 */
  --heading: #1A1A1A;            /* 标题字色 */
  --muted: #6B7280;
  --line: #E5E7EB;

  /* —— 字体 —— */
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* —— 字号 —— */
  --fs-h1: 44px;
  --fs-h2: 30px;
  --fs-h3: 22px;
  --fs-h4: 18px;
  --fs-body: 16px;
  --fs-small: 14px;
  --fs-xs: 12px;

  /* —— 圆角 / 阴影 —— */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(15,66,86,0.08);
  --shadow-md: 0 10px 24px -12px rgba(15,66,86,0.16);
  --shadow-lg: 0 24px 48px -20px rgba(15,66,86,0.22);

  --container: 1200px;
  --header-h: 72px;
}

/* —— 适老化模式（一键切换）—— */
html[data-elderly="on"] {
  --fs-h1: 52px;
  --fs-h2: 38px;
  --fs-h3: 30px;
  --fs-h4: 24px;
  --fs-body: 20px;
  --fs-small: 18px;
  --fs-xs: 16px;
  --header-h: 80px;
}
html[data-elderly="on"] .nav-link,
html[data-elderly="on"] .btn,
html[data-elderly="on"] .btn-lg {
  font-size: 18px;
}
html[data-elderly="on"] .footer a,
html[data-elderly="on"] .footer p,
html[data-elderly="on"] .footer h4,
html[data-elderly="on"] .footer h5 {
  font-size: 17px;
}
html[data-elderly="on"] body {
  background: #FFFFFF;
  letter-spacing: 0.02em;
}
html[data-elderly="on"] .card,
html[data-elderly="on"] .stat-card {
  box-shadow: none !important;
  border: 2px solid #1A6B8A;
}
html[data-elderly="on"] .consult-card .c-qr img { width: 200px; height: 200px; }

/* —— Reset —— */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--text);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; border: none; background: none; }

h1, h2, h3, h4, h5 { color: var(--heading); font-weight: 700; line-height: 1.35; }
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 72px 0; }
.section--soft { background: var(--bg); }
.section--dark { background: var(--primary-deep); color: #fff; }
.text-center { text-align: center; }
.muted { color: var(--muted); }
.hidden { display: none !important; }

/* —— 模块标题（Section Heading）—— */
.sec-head { max-width: 720px; margin: 0 auto 48px; text-align: center; }
.sec-head .eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--primary); font-weight: 600; font-size: var(--fs-small);
  letter-spacing: 0.1em; text-transform: uppercase;
}
.sec-head .eyebrow::before,
.sec-head .eyebrow::after {
  content: ""; width: 24px; height: 2px; background: var(--primary); border-radius: 2px;
}
.sec-head h2 { margin: 12px 0 14px; }
.sec-head p { color: var(--muted); font-size: 1.05em; }

/* ==========================================================================
   按钮 Button System
   主按钮 / 次按钮 / 文字链（CTA Button Library）
   ========================================================================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 600; font-size: 16px;
  min-height: 46px; padding: 0 28px;
  border-radius: 999px;
  transition: all 0.25s ease;
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn-lg { min-height: 52px; padding: 0 34px; font-size: 17px; }
.btn-sm { min-height: 40px; padding: 0 18px; font-size: 14px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-secondary { background: var(--secondary); color: #fff; }
.btn-secondary:hover { background: var(--secondary-dark); transform: translateY(-2px); }
.btn-outline { border-color: var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: var(--primary-light); transform: translateY(-2px); }
.btn-outline-light { border-color: rgba(255,255,255,0.65); color: #fff; background: transparent; }
.btn-outline-light:hover { background: rgba(255,255,255,0.12); border-color: #fff; }
.btn-white { background: #fff; color: var(--primary); }
.btn-white:hover { background: var(--bg-soft); transform: translateY(-2px); box-shadow: var(--shadow-md); }
/* 文字链 Text Link */
.link-more { display: inline-flex; align-items: center; gap: 6px; color: var(--primary); font-weight: 600; font-size: 15px; transition: gap 0.25s ease; }
.link-more:hover { gap: 12px; color: var(--primary-dark); }
.link-more i { font-size: 12px; }

/* ==========================================================================
   导航 Header（Sticky + Mega Menu）
   ========================================================================== */
#site-header {
  position: sticky; top: 0; z-index: 100;
}
.header {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  height: var(--header-h);
  display: flex; align-items: center;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 36px; width: auto; }
.brand-text { font-size: 20px; font-weight: 800; color: var(--heading); letter-spacing: 0.02em; }
.brand-text small { display: block; font-size: 11px; font-weight: 600; color: var(--primary); letter-spacing: 0.14em; }

.nav { display: flex; align-items: center; gap: 6px; }
.nav-item { position: relative; }
.nav-link {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 16px; border-radius: 999px;
  font-weight: 500; color: var(--text);
  transition: all 0.2s ease;
}
.nav-link:hover, .nav-item.active > .nav-link { color: var(--primary); background: var(--primary-light); }
.nav-link .caret { font-size: 10px; transition: transform 0.2s ease; }
.nav-item:hover .nav-link .caret { transform: rotate(180deg); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-actions .login-link { font-weight: 500; color: var(--text); font-size: 15px; }
.nav-actions .login-link:hover { color: var(--primary); }

/* 适老化模式开关 */
.elderly-toggle {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--primary); font-weight: 600;
  border: 1.5px solid var(--primary); border-radius: 999px;
  padding: 6px 12px; transition: all 0.2s;
}
.elderly-toggle:hover { background: var(--primary-light); }

/* 汉堡菜单 */
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.hamburger span { width: 24px; height: 2px; background: var(--heading); border-radius: 2px; transition: all 0.3s; }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mega Menu —— 解决方案下拉（2×4 宫格） */
.mega-menu {
  position: absolute; top: calc(100% + 8px); left: -120px;
  width: 720px;
  background: #fff; border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--line);
  padding: 28px;
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: all 0.28s cubic-bezier(0.2,0,0,1);
  z-index: 120;
}
.nav-item:hover .mega-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.mega-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 18px; }
.mega-head h4 { font-size: 18px; color: var(--heading); }
.mega-head a { font-size: 13px; color: var(--primary); font-weight: 600; }
.mega-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.mega-item {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 14px 12px; border-radius: var(--r-md);
  transition: all 0.2s ease; border: 1px solid transparent;
}
.mega-item:hover { background: var(--bg); border-color: var(--line); transform: translateY(-2px); }
.mega-item .m-icon {
  width: 40px; height: 40px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px; font-size: 18px; color: #fff;
}
.mega-item h5 { font-size: 14.5px; font-weight: 600; color: var(--heading); margin-bottom: 3px; }
.mega-item p { font-size: 12px; color: var(--muted); line-height: 1.5; }

/* 颜色辅助：图标底色 */
.c-icon-blue   { background: var(--primary); }
.c-icon-green  { background: var(--secondary); }
.c-icon-orange { background: var(--accent); }
.c-icon-navy   { background: #4154AF; }
.c-icon-teal   { background: #00897B; }
.c-icon-purple { background: #7B4CA0; }

/* 窄版 Mega Menu（生态合作 / 资讯洞察 / 关于我们） */
.mega-narrow { width: 340px; left: -20px; }
.mega-sublist { display: flex; flex-direction: column; gap: 6px; }
.mega-sublist .mega-subitem {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 12px; border-radius: 10px;
  font-size: 14.5px; font-weight: 500; color: var(--text);
  transition: all 0.2s ease;
}
.mega-sublist .mega-subitem:hover { background: var(--bg); color: var(--primary); padding-left: 16px; }
.mega-sublist .mega-subitem i {
  width: 34px; height: 34px; border-radius: 10px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; color: #fff;
}

/* 适老化开关激活态 */
.elderly-toggle.active { background: var(--primary); color: #fff; }

/* 移动端抽屉导航 */
.mobile-nav {
  display: none;
  position: fixed; inset: 0; top: var(--header-h);
  background: #fff; z-index: 90;
  padding: 24px; overflow-y: auto;
}
.mobile-nav.open { display: block; }
.mobile-nav .mnav-group { margin-bottom: 20px; }
.mobile-nav .mnav-title { font-weight: 700; color: var(--heading); font-size: 15px; margin-bottom: 10px; display: flex; justify-content: space-between; align-items: center; }
.mobile-nav .mnav-sub { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.mobile-nav .mnav-sub a { display: flex; gap: 10px; align-items: center; padding: 10px; border: 1px solid var(--line); border-radius: var(--r-sm); font-size: 14px; }
.mobile-nav .mnav-sub i { width: 34px; height: 34px; border-radius: 10px; color: #fff; display: flex; align-items: center; justify-content: center; font-size: 14px; flex-shrink: 0; }

@media (max-width: 1024px) {
  .nav, .nav-actions .elderly-toggle, .nav-actions .login-link { display: none; }
  .hamburger { display: flex; }
  .nav-actions .btn { display: none; }
  .nav-actions { gap: 6px; }
  .mobile-nav { top: var(--header-h); }
}

/* ==========================================================================
   页脚 Footer
   ========================================================================== */
.footer { background: #102A36; color: #B7C7CF; }
.footer-top { padding: 64px 0 40px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand img { height: 34px; }
.footer-brand h4 { color: #fff; margin: 14px 0 10px; font-size: 20px; }
.footer-brand p { font-size: 13.5px; line-height: 1.8; color: #9FB4BE; }
.footer-col h5 { color: #fff; font-size: 16px; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a { font-size: 14px; color: #9FB4BE; transition: color 0.2s; }
.footer-col ul a:hover { color: #fff; }
.footer-social { display: flex; gap: 10px; margin-top: 20px; }
.footer-social a {
  width: 40px; height: 40px; border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  color: #fff; transition: all 0.2s;
}
.footer-social a:hover { background: var(--primary); }
.footer-news li { font-size: 13px; color: #9FB4BE; line-height: 1.6; margin-bottom: 12px; padding-left: 14px; position: relative; }
.footer-news li::before { content: ""; position: absolute; left: 0; top: 8px; width: 6px; height: 6px; background: var(--accent); border-radius: 50%; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 22px 0; }
.footer-bottom-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.footer-bottom p { font-size: 12.5px; color: #7E98A4; }
.footer-bottom a { color: #7E98A4; }
.footer-bottom a:hover { color: #fff; }

@media (max-width: 960px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   卡片组件 Card Library
   ========================================================================== */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.card-hover:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }

/* 数据信任墙卡片 */
.stat-card {
  background: #fff; border-radius: var(--r-md);
  padding: 28px 24px; text-align: center;
  box-shadow: var(--shadow-sm); border: 1px solid var(--line);
  transition: all 0.3s ease;
}
.stat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.stat-card .s-icon {
  width: 52px; height: 52px; margin: 0 auto 14px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center; font-size: 22px; color: #fff;
}
.stat-card .s-num { font-size: 40px; font-weight: 800; line-height: 1.1; }
.stat-card .s-num em { font-style: normal; font-size: 22px; margin-left: 2px; }
.stat-card .s-label { margin-top: 6px; color: var(--muted); font-size: 14px; }
.stat-note { text-align: center; color: var(--muted); font-size: var(--fs-xs); margin-top: 20px; }

/* 业务卡片 2×4 宫格 */
.biz-card {
  position: relative;
  background: #fff; border-radius: var(--r-md);
  border: 1px solid var(--line);
  padding: 26px 24px;
  display: flex; flex-direction: column;
  gap: 12px;
  transition: all 0.3s ease;
  overflow: hidden;
}
.biz-card::after {
  content: ""; position: absolute; left: 0; top: 0; width: 100%; height: 4px;
  background: var(--primary); opacity: 0; transition: opacity 0.3s;
}
.biz-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.biz-card:hover::after { opacity: 1; }
.biz-card .b-icon {
  width: 48px; height: 48px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center; font-size: 20px; color: #fff;
}
.biz-card h3 { font-size: 18px; }
.biz-card p { font-size: 13.5px; color: var(--muted); flex: 1; }
.biz-card .b-tag { position: absolute; top: 22px; right: 20px; font-size: 12px; color: var(--muted); background: var(--bg); padding: 3px 10px; border-radius: 999px; }

/* 案例卡片 */
.case-card { background: #fff; border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow-sm); transition: all 0.3s ease; }
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.case-cover { height: 200px; position: relative; overflow: hidden; }
.case-cover .cover-img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.case-card:hover .cover-img { transform: scale(1.05); }
.case-cover .cover-badge { position: absolute; top: 14px; left: 14px; background: var(--accent); color: #fff; font-size: 12px; padding: 4px 12px; border-radius: 999px; font-weight: 600; }
.case-body { padding: 24px; }
.case-body h3 { font-size: 18px; margin-bottom: 8px; }
.case-body p { font-size: 14px; color: var(--muted); margin-bottom: 16px; }
.case-meta { display: flex; gap: 14px; font-size: 12.5px; color: var(--muted); margin-bottom: 14px; }
.case-meta i { margin-right: 4px; color: var(--primary); }

/* 信任Logo墙 */
.logo-wall { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 20px 40px; }
.logo-item {
  filter: grayscale(1); opacity: 0.55;
  transition: all 0.3s ease;
  display: flex; flex-direction: column; align-items: center; gap: 6px;
}
.logo-item img { height: 40px; width: auto; }
.logo-item span { font-size: 12px; color: var(--muted); }
.logo-item:hover { filter: grayscale(0); opacity: 1; transform: translateY(-2px); }

/* 资质徽章 */
.badge-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 36px; }
.qual-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; border: 1px solid var(--line);
  border-radius: 999px; padding: 10px 20px; font-size: 14px; font-weight: 600; color: var(--heading);
  box-shadow: var(--shadow-sm);
}
.qual-badge i { color: var(--secondary); font-size: 16px; }

/* ==========================================================================
   增长飞轮 Growth Flywheel
   ========================================================================== */
.flywheel { background: #fff; border-radius: var(--r-lg); box-shadow: var(--shadow-sm); padding: 40px 32px; border: 1px solid var(--line); }
.flywheel-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; position: relative; }
.fw-step { text-align: center; padding: 0 12px; position: relative; opacity: 0.45; transition: opacity 0.5s ease; }
.fw-step.active { opacity: 1; }
.fw-step .fw-dot {
  width: 64px; height: 64px; margin: 0 auto 16px; border-radius: 50%;
  background: var(--bg); color: var(--muted);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; position: relative; transition: all 0.5s ease;
}
.fw-step.active .fw-dot { background: var(--primary); color: #fff; box-shadow: 0 0 0 8px var(--primary-light); }
.fw-step.active .fw-dot::after {
  content: ""; position: absolute; inset: -14px; border: 2px solid var(--primary); border-radius: 50%;
  animation: fw-pulse 1.6s ease-out infinite;
}
@keyframes fw-pulse { 0% { transform: scale(0.9); opacity: 1; } 100% { transform: scale(1.35); opacity: 0; } }
.fw-step h4 { font-size: 16px; margin-bottom: 6px; }
.fw-step p { font-size: 13px; color: var(--muted); }
/* 步骤间箭头 */
.fw-step + .fw-step::before {
  content: ""; position: absolute; top: 31px; left: -14px; width: 28px; height: 2px;
  background: var(--line); z-index: 0;
}
.fw-step + .fw-step::after {
  content: "\f105"; font-family: "Font Awesome 6 Free"; font-weight: 900;
  position: absolute; top: 23px; left: -13px; color: var(--primary); font-size: 14px; z-index: 1;
}
.flywheel-tagline { text-align: center; color: var(--primary); font-weight: 600; font-size: 15px; margin-top: 28px; }
.fw-progress { max-width: 360px; height: 5px; margin: 22px auto 0; background: var(--bg-soft); border-radius: 99px; overflow: hidden; }
.fw-progress .bar { height: 100%; width: 0; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 99px; transition: width 0.6s ease; }

@media (max-width: 900px) {
  .flywheel-steps { grid-template-columns: 1fr 1fr; gap: 32px 0; }
  .fw-step + .fw-step::before, .fw-step + .fw-step::after { display: none; }
}

/* ==========================================================================
   面包屑 Breadcrumb
   ========================================================================== */
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; font-size: 14px; color: var(--muted); }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--line); }
.breadcrumb .current { color: var(--primary); font-weight: 600; }
.page-banner {
  background: linear-gradient(120deg, var(--primary-deep) 0%, var(--primary) 70%, #2E8FB0 100%);
  color: #fff; padding: 56px 0 56px; position: relative; overflow: hidden;
}
.page-banner::after {
  content: ""; position: absolute; right: -80px; top: -80px; width: 320px; height: 320px;
  border-radius: 50%; background: rgba(255,255,255,0.06);
}
.page-banner::before {
  content: ""; position: absolute; right: 120px; bottom: -120px; width: 260px; height: 260px;
  border-radius: 50%; background: rgba(76,175,80,0.18);
}
.page-banner h1 { color: #fff; font-size: 34px; margin: 10px 0 12px; }
.page-banner p { color: rgba(255,255,255,0.82); max-width: 640px; font-size: 16px; }
.page-banner .breadcrumb { margin-bottom: 6px; }
.page-banner .breadcrumb a, .page-banner .breadcrumb .current { color: rgba(255,255,255,0.75); }
.page-banner .breadcrumb .current { color: #fff; }
.page-banner .breadcrumb .sep { color: rgba(255,255,255,0.35); }
.breadcrumb-nav { background: var(--bg); border-bottom: 1px solid var(--line); padding: 14px 0; }

/* ==========================================================================
   侧边栏粘性组件 Sticky Sidebar（立即咨询）
   ========================================================================== */
.layout-sidebar { display: grid; grid-template-columns: 1fr 320px; gap: 40px; align-items: start; }
.sticky-aside { position: sticky; top: calc(var(--header-h) + 20px); }
@media (max-width: 960px) {
  .layout-sidebar { grid-template-columns: 1fr; }
  .sticky-aside { position: static; }
}
.consult-card {
  background: #fff; border-radius: var(--r-md);
  border: 1px solid var(--line); box-shadow: var(--shadow-md);
  padding: 28px 24px;
}
.consult-card .c-head { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.consult-card .c-head i { width: 40px; height: 40px; border-radius: 12px; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 17px; }
.consult-card h4 { font-size: 18px; }
.consult-card .c-desc { font-size: 14px; color: var(--muted); margin-bottom: 14px; }
.consult-card .c-qr {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--r-sm);
  padding: 16px; text-align: center; margin-bottom: 14px;
}
.consult-card .c-qr img { width: 150px; height: 150px; margin: 0 auto 10px; border-radius: 6px; }
.consult-card .c-qr span { display: block; font-size: 13px; color: var(--muted); }
.consult-card .c-actions { display: flex; flex-direction: column; gap: 10px; }
.form-input {
  width: 100%; padding: 12px 14px;
  border: 1.5px solid var(--line); border-radius: 10px;
  font-size: 15px; color: var(--text); background: #fff;
  transition: border-color 0.2s;
}
.form-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,107,138,0.12); }
textarea.form-input { resize: vertical; min-height: 90px; }
.consult-card .c-contact { margin-top: 18px; padding-top: 18px; border-top: 1px dashed var(--line); font-size: 14px; color: var(--muted); }
.consult-card .c-contact li { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.consult-card .c-contact i { color: var(--primary); width: 18px; text-align: center; }
.consult-card .c-contact b { color: var(--heading); font-weight: 600; }

/* ==========================================================================
   内容排版 Article / Prose
   ========================================================================== */
.prose { color: var(--text); font-size: 16px; line-height: 1.9; }
.prose h2 { font-size: 26px; margin: 40px 0 16px; padding-left: 14px; border-left: 4px solid var(--primary); }
.prose h3 { font-size: 20px; margin: 28px 0 12px; }
.prose p { margin-bottom: 18px; }
.prose ul { list-style: disc; padding-left: 22px; margin-bottom: 18px; }
.prose ul li { margin-bottom: 8px; }
.prose .note-box {
  background: var(--accent-light); border: 1px solid #FFD9A8;
  border-radius: var(--r-sm); padding: 14px 18px; font-size: 14px; color: #7A4A00; margin: 18px 0;
}
.prose .info-box {
  background: var(--primary-light); border: 1px solid #BBD9E4;
  border-radius: var(--r-sm); padding: 14px 18px; font-size: 14px; color: var(--primary-dark); margin: 18px 0;
}

/* 表格 */
.data-table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 20px 0; }
.data-table th, .data-table td { border: 1px solid var(--line); padding: 12px 14px; text-align: left; }
.data-table th { background: var(--primary-light); color: var(--primary-dark); font-weight: 600; }
.data-table tr:nth-child(even) td { background: var(--bg); }

/* 特点清单 feature list */
.feature-list li { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 14px; font-size: 15px; }
.feature-list i { color: var(--secondary); margin-top: 4px; }

/* 信任声明（真实性要素） */
.disclaimer {
  font-size: 13px; color: var(--muted); background: var(--bg);
  border-radius: var(--r-sm); padding: 12px 16px; margin-top: 24px;
  border-left: 3px solid var(--muted);
}

/* ==========================================================================
   Hero 首屏
   ========================================================================== */
.hero {
  position: relative;
  background: linear-gradient(120deg, var(--primary-deep) 0%, var(--primary) 55%, #2E8FB0 100%);
  color: #fff;
  overflow: hidden;
  padding: 76px 0 120px;
}
.hero-bg {
  position: absolute; inset: 0; opacity: .35;
  background-image:
    radial-gradient(circle at 18% 22%, rgba(255,255,255,.12) 0, transparent 26%),
    radial-gradient(circle at 82% 16%, rgba(76,175,80,.35) 0, transparent 30%),
    radial-gradient(circle at 70% 80%, rgba(255,140,0,.22) 0, transparent 28%),
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 100% 100%, 56px 56px, 56px 56px;
}
.hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.hero-eyebrow {
  display: inline-block; background: rgba(255,255,255,0.14); backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.25);
  padding: 7px 16px; border-radius: 999px; font-size: 13.5px; letter-spacing: 0.08em;
  margin-bottom: 22px;
}
.hero h1 { color: #fff; font-size: 46px; line-height: 1.28; letter-spacing: 0.01em; }
.hero h1 .grad-text {
  background: linear-gradient(90deg, #7FD4F2, #A5E0B4 60%, #FFC069);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { margin: 20px 0 32px; font-size: 17px; line-height: 1.9; color: rgba(255,255,255,0.85); max-width: 560px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; }
.hero-quick { display: flex; flex-wrap: wrap; gap: 26px; margin-top: 36px; font-size: 14.5px; color: rgba(255,255,255,0.82); }
.hero-quick i { color: #A5E0B4; margin-right: 6px; }
.hero-quick b { color: #fff; margin-left: 4px; font-size: 16px; }

/* 首屏可视化卡片 */
.hero-visual { position: relative; min-height: 420px; }
.hv-card {
  background: rgba(255,255,255,0.10); backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,0.22); border-radius: 20px;
  color: #fff; box-shadow: 0 24px 48px -20px rgba(6,32,44,0.6);
}
.hv-card-main { position: absolute; top: 8px; left: 0; right: 30px; padding: 22px; z-index: 2; }
.hv-top { display: flex; justify-content: space-between; align-items: center; font-size: 14px; font-weight: 600; }
.hv-vitals { display: flex; gap: 14px; margin-top: 16px; }
.hv-vitals > div { flex: 1; background: rgba(255,255,255,0.1); border-radius: 14px; padding: 12px 10px; text-align: center; }
.hv-vitals b { display: block; font-size: 24px; }
.hv-vitals span { font-size: 11.5px; color: rgba(255,255,255,0.75); }
.hv-vitals .ok { background: rgba(76,175,80,0.22); flex: 1.4; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; }
.hv-chart { display: flex; align-items: flex-end; gap: 5px; height: 96px; margin-top: 16px; padding: 0 4px; }
.hv-chart span { flex: 1; background: linear-gradient(180deg, #7FD4F2, #1A6B8A); border-radius: 4px 4px 0 0; opacity: .85; }
.hv-chart span:nth-child(even) { background: linear-gradient(180deg, #A5E0B4, #2E8FB0); }
.hv-foot { margin-top: 14px; font-size: 12.5px; color: rgba(255,255,255,0.75); }
.hv-card-sm { position: absolute; width: 46%; padding: 16px; font-size: 13px; }
.hv-card-points { right: 0; top: 58px; z-index: 1; }
.hv-points-head { display: flex; align-items: center; gap: 8px; font-weight: 600; }
.hv-points-head i { color: #A5E0B4; }
.hv-points-num { font-size: 30px; font-weight: 800; color: #FFC069; margin: 8px 0; }
.hv-points-bar { height: 6px; border-radius: 99px; background: rgba(255,255,255,0.18); overflow: hidden; }
.hv-points-bar span { display: block; height: 100%; background: linear-gradient(90deg, #A5E0B4, #FFC069); border-radius: 99px; }
.hv-points-foot { margin-top: 8px; color: rgba(255,255,255,0.72); font-size: 12px; }
.hv-card-alert { right: 34px; bottom: 0; display: flex; gap: 12px; align-items: flex-start; z-index: 3; background: rgba(255,140,0,0.22); }
.hv-card-alert i { color: #FFC069; font-size: 18px; margin-top: 2px; }
.hv-card-alert b { display: block; font-size: 14px; }
.hv-card-alert span { font-size: 12px; color: rgba(255,255,255,0.8); }

.hero-wave { position: absolute; bottom: -1px; left: 0; right: 0; z-index: 1; }
.hero-wave svg { display: block; width: 100%; height: 72px; }

@media (max-width: 960px) {
  .hero { padding: 56px 0 90px; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { min-height: 380px; }
  .hero h1 { font-size: 32px; }
}

/* 案例封面渐变占位 */
.cover-img-grad { position: relative; display: flex; align-items: center; justify-content: center; }
.cover-img-grad i { font-size: 46px; color: rgba(255,255,255,0.9); }
.cover-img-1 { background: linear-gradient(135deg, #1A6B8A, #2E8FB0 60%, #7FD4F2); }
.cover-img-2 { background: linear-gradient(135deg, #4154AF, #7B4CA0 60%, #C58BE0); }
.cover-img-3 { background: linear-gradient(135deg, #00897B, #4CAF50 60%, #A5E0B4); }

/* ==========================================================================
   底部转化区
   ========================================================================== */
.convert-grid { display: grid; grid-template-columns: 1.2fr 1px 1fr; gap: 48px; align-items: center; }
.convert-divider { background: rgba(255,255,255,0.18); height: 100%; }
.convert h2 { color: #fff; font-size: 28px; margin: 16px 0 14px; }
.convert p { color: rgba(255,255,255,0.82); max-width: 480px; margin-bottom: 24px; }
.convert-cta { display: flex; flex-wrap: wrap; gap: 14px; }
@media (max-width: 860px) {
  .convert-grid { grid-template-columns: 1fr; gap: 32px; }
  .convert-divider { height: 1px; width: 100%; }
}

/* 解决方案线 */
.sol-line { margin-bottom: 56px; }
.sol-line-head { display: flex; gap: 16px; align-items: center; margin-bottom: 28px; }
.sol-line-icon {
  width: 52px; height: 52px; border-radius: 16px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; color: #fff; font-size: 22px;
}
.sol-line-head h3 { font-size: 22px; }
.sol-line-head p { color: var(--muted); font-size: 14px; margin-top: 4px; }
.sol-card { padding: 28px 26px; display: flex; flex-direction: column; gap: 12px; }
.sol-card .pill { align-self: flex-start; }
.sol-card-icon {
  width: 48px; height: 48px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center; color: #fff; font-size: 20px;
}
.sol-card h4 { font-size: 18px; }
.sol-card p { font-size: 14px; color: var(--muted); }
.sol-card .feature-list { margin-top: 4px; }
.sol-card .link-more { margin-top: auto; padding-top: 6px; }

/* 生态合作入口横幅 */
.sol-eco {
  margin-top: 8px;
  background: linear-gradient(110deg, var(--primary-light), #fff 55%, var(--secondary-light));
  border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 40px 36px;
  display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap;
}
.sol-eco-text h3 { font-size: 22px; margin-bottom: 8px; }
.sol-eco-text p { color: var(--muted); font-size: 14.5px; max-width: 520px; margin-bottom: 18px; }
.sol-eco-points { display: flex; flex-direction: column; gap: 14px; }
.sol-eco-points span { display: flex; align-items: center; gap: 10px; font-weight: 600; color: var(--heading); font-size: 15px; }
.sol-eco-points i { width: 36px; height: 36px; border-radius: 10px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 14px; }

/* ==========================================================================
   解决方案详情页
   ========================================================================== */
.detail-hero {
  background: linear-gradient(120deg, var(--primary-deep) 0%, var(--primary) 60%, #2E8FB0 100%);
  color: #fff; padding: 44px 0; position: relative; overflow: hidden;
}
.detail-hero::after { content: ""; position: absolute; right: -60px; top: -60px; width: 260px; height: 260px; border-radius: 50%; background: rgba(255,255,255,0.06); }
.detail-hero h1 { color: #fff; font-size: 30px; margin: 8px 0 10px; }
.detail-hero p { color: rgba(255,255,255,0.82); max-width: 680px; }
.detail-hero .detail-hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.detail-hero .detail-hero-tags .pill { background: rgba(255,255,255,0.16); color: #fff; border: 1px solid rgba(255,255,255,0.28); }

/* 详情主体卡片 */
.detail-card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-md); box-shadow: var(--shadow-sm); padding: 36px; margin-bottom: 28px; }
.detail-card h2 { font-size: 22px; margin-bottom: 18px; display: flex; align-items: center; gap: 10px; }
.detail-card h2 i { color: var(--primary); }

/* 数据小条 */
.mini-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 28px; }
.mini-stat { background: var(--bg); border-radius: var(--r-md); padding: 20px 16px; text-align: center; border: 1px solid var(--line); }
.mini-stat b { display: block; font-size: 26px; color: var(--primary); }
.mini-stat span { font-size: 13px; color: var(--muted); }
@media (max-width: 768px) { .mini-stats { grid-template-columns: 1fr 1fr; } }

/* 优势块 */
.adv-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.adv-item { display: flex; gap: 14px; padding: 18px; border: 1px solid var(--line); border-radius: var(--r-sm); background: #fff; transition: all 0.25s; }
.adv-item:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.adv-item i { width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 17px; }
.adv-item h4 { font-size: 16px; margin-bottom: 4px; }
.adv-item p { font-size: 13.5px; color: var(--muted); }
@media (max-width: 768px) { .adv-grid { grid-template-columns: 1fr; } }

/* 流程步骤 */
.process-steps { display: flex; align-items: flex-start; gap: 0; }
.process-step { flex: 1; text-align: center; position: relative; padding: 0 12px; }
.process-step .ps-num {
  width: 40px; height: 40px; margin: 0 auto 12px; border-radius: 50%;
  background: var(--primary-light); color: var(--primary); font-weight: 700; font-size: 15px;
  display: flex; align-items: center; justify-content: center;
}
.process-step h4 { font-size: 15px; margin-bottom: 4px; }
.process-step p { font-size: 12.5px; color: var(--muted); }
.process-step:not(:last-child)::after {
  content: "\f105"; font-family: "Font Awesome 6 Free"; font-weight: 900;
  position: absolute; top: 10px; right: -8px; color: var(--primary); font-size: 14px;
}
@media (max-width: 700px) { .process-steps { flex-direction: column; gap: 24px; } .process-step:not(:last-child)::after { display: none; } }

/* 生态合作卡片 */
.partner-card { padding: 32px 28px; display: flex; gap: 20px; align-items: flex-start; }
.partner-card .p-icon {
  width: 52px; height: 52px; border-radius: 16px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; color: #fff; font-size: 22px;
}
.partner-card h3 { font-size: 19px; margin-bottom: 8px; }
.partner-card p { font-size: 14px; line-height: 1.7; }
.partner-card .feature-list { margin-top: 14px; }
.partner-card .link-more { margin-top: 14px; }
.partner-cta {
  background: linear-gradient(120deg, var(--primary-deep), var(--primary));
  color: #fff; border: none; display: flex; flex-direction: column; align-items: flex-start; justify-content: center;
}
.partner-cta > i { font-size: 34px; color: #FFC069; margin-bottom: 14px; }
.partner-cta h3 { color: #fff; font-size: 20px; }
.partner-cta p { color: rgba(255,255,255,0.82); margin-bottom: 18px; }

/* 合作权益 */
.benefit-item { background: #fff; border: 1px solid var(--line); border-radius: var(--r-md); padding: 26px 24px; text-align: center; transition: all 0.3s; }
.benefit-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.benefit-item > i { width: 56px; height: 56px; border-radius: 16px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 22px; margin: 0 auto 14px; }
.benefit-item h4 { font-size: 17px; margin-bottom: 6px; }
.benefit-item p { font-size: 13.5px; color: var(--muted); }

/* ==========================================================================
   资讯洞察 / 新闻
   ========================================================================== */
.news-filters { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 36px; }
.filter-btn {
  padding: 9px 20px; border-radius: 999px; font-size: 14.5px; font-weight: 600;
  color: var(--muted); background: #fff; border: 1.5px solid var(--line); transition: all 0.2s;
}
.filter-btn:hover { color: var(--primary); border-color: var(--primary); }
.filter-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.news-thumb { position: relative; }
.news-thumb .nt-badge { position: absolute; top: 10px; left: 10px; z-index: 2; }
.news-thumb.grad-1 { background: linear-gradient(135deg, #1A6B8A, #7FD4F2); }
.news-thumb.grad-2 { background: linear-gradient(135deg, #4154AF, #C58BE0); }
.news-thumb.grad-3 { background: linear-gradient(135deg, #00897B, #A5E0B4); }
.news-thumb.grad-4 { background: linear-gradient(135deg, #E07B00, #FFC069); }

/* 长文阅读 */
.article-wrap { background: #fff; border: 1px solid var(--line); border-radius: var(--r-md); box-shadow: var(--shadow-sm); padding: 48px 40px; }
.article-head h1 { font-size: 30px; margin: 12px 0 16px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 20px; font-size: 13.5px; color: var(--muted); margin-bottom: 28px; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.article-meta i { margin-right: 5px; color: var(--primary); }
.prose-p { color: var(--text); font-size: 16px; line-height: 1.95; margin-bottom: 18px; }
@media (max-width: 700px) {
  .article-wrap { padding: 28px 20px; }
  .article-head h1 { font-size: 24px; }
}

/* ==========================================================================
   关于我们
   ========================================================================== */
.mv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.mv-card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-md); padding: 30px 26px; text-align: center; transition: all 0.3s; }
.mv-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.mv-card i { width: 60px; height: 60px; border-radius: 18px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 24px; margin: 0 auto 16px; }
.mv-card h3 { font-size: 18px; margin-bottom: 8px; }
.mv-card p { font-size: 14px; color: var(--muted); }
@media (max-width: 768px) { .mv-grid { grid-template-columns: 1fr; } }

.value-strip { display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; margin-top: 24px; }
.value-tag { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; color: var(--heading); font-size: 15px; }
.value-tag i { color: var(--secondary); }

/* ==========================================================================
   其他组件
   ========================================================================== */
/* 徽章 pill */
.pill { display: inline-block; padding: 4px 12px; border-radius: 999px; font-size: 12.5px; font-weight: 600; }
.pill-blue { background: var(--primary-light); color: var(--primary); }
.pill-green { background: var(--secondary-light); color: var(--secondary-dark); }
.pill-orange { background: var(--accent-light); color: var(--accent-dark); }

/* 标签页 Tabs */
.tabs { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-bottom: 36px; }
.tab-btn {
  padding: 10px 22px; border-radius: 999px; font-size: 15px; font-weight: 600;
  color: var(--muted); background: #fff; border: 1.5px solid var(--line);
  transition: all 0.2s;
}
.tab-btn:hover { border-color: var(--primary); color: var(--primary); }
.tab-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* 资讯列表 */
.news-item {
  display: flex; gap: 24px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--r-md); padding: 20px; transition: all 0.3s ease; align-items: center;
}
.news-item:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: transparent; }
.news-thumb { width: 220px; height: 140px; border-radius: var(--r-sm); overflow: hidden; flex-shrink: 0; display: flex; align-items: center; justify-content: center; position: relative; background-size: cover; background-position: center; background-repeat: no-repeat; }
.news-thumb i { font-size: 34px; }
.news-loading, .news-error { margin-top: 28px; font-size: 15px; color: var(--muted); text-align: center; }
.news-error { color: var(--accent-dark); }
.news-body { flex: 1; }
.news-body h3 { font-size: 18px; margin-bottom: 6px; transition: color 0.2s; }
.news-item:hover .news-body h3 { color: var(--primary); }
.news-body p { font-size: 14px; color: var(--muted); }
.news-meta { display: flex; gap: 16px; font-size: 12.5px; color: var(--muted); margin-top: 8px; }
@media (max-width: 640px) {
  .news-item { flex-direction: column; align-items: flex-start; }
  .news-thumb { width: 100%; height: 140px; }
}

/* 团队卡片 */
.team-card { text-align: center; padding: 32px 20px; }
.team-avatar {
  width: 96px; height: 96px; margin: 0 auto 16px; border-radius: 50%;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center; font-size: 32px; font-weight: 800;
}
.team-card h4 { font-size: 18px; }
.team-card .role { color: var(--primary); font-weight: 600; font-size: 14px; margin: 4px 0 8px; }
.team-card p { font-size: 13px; color: var(--muted); }

/* 时间线 */
.timeline { position: relative; padding-left: 28px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px; background: var(--line); }
.tl-item { position: relative; padding-bottom: 28px; }
.tl-item::before { content: ""; position: absolute; left: -28px; top: 4px; width: 16px; height: 16px; border-radius: 50%; background: var(--primary); border: 3px solid #fff; box-shadow: 0 0 0 2px var(--primary); }
.tl-item .tl-year { font-weight: 700; color: var(--primary); font-size: 15px; }
.tl-item p { font-size: 14px; color: var(--muted); margin-top: 4px; }

/* 表单页 */
.form-panel { background: #fff; border-radius: var(--r-lg); border: 1px solid var(--line); box-shadow: var(--shadow-sm); padding: 36px; }
.form-field { margin-bottom: 18px; }
.form-field label { display: block; font-size: 14.5px; font-weight: 600; color: var(--heading); margin-bottom: 8px; }
.form-field label span.required { color: var(--accent); margin-left: 2px; }

/* 对比表 / 双栏转化区 */
.convert-panel { background: linear-gradient(120deg, var(--primary-deep), var(--primary)); border-radius: var(--r-lg); color: #fff; padding: 48px; position: relative; overflow: hidden; }
.convert-panel h2 { color: #fff; font-size: 28px; }
.convert-panel p { color: rgba(255,255,255,0.85); }

/* 浮层：返回顶部 */
.to-top {
  position: fixed; right: 24px; bottom: 24px; z-index: 80;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md); opacity: 0; visibility: hidden;
  transition: all 0.3s ease;
}
.to-top.show { opacity: 1; visibility: visible; }
.to-top:hover { background: var(--primary-dark); transform: translateY(-3px); }

/* 滚动显现动画 */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* 表单反馈 */
.form-feedback { color: var(--secondary); font-size: 13px; margin-top: 12px; text-align: center; }

/* 网格工具 */
.grid { display: grid; gap: 28px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.space-y-5 > * + * { margin-top: 20px; }
@media (max-width: 960px) { .grid-4 { grid-template-columns: 1fr 1fr; } .grid-3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .grid-4, .grid-3 { grid-template-columns: 1fr; } .grid-2 { grid-template-columns: 1fr; } }

/* 响应式 */
@media (max-width: 768px) {
  .section { padding: 48px 0; }
  h1 { font-size: 30px; }
  h2 { font-size: 24px; }
  .container { padding: 0 18px; }
  .sec-head { margin-bottom: 32px; }
}