/**
 * 墨序OFD转换 (MoxuDoc OFD Converter) - 主样式表
 * 企业级OFD文档处理平台官网
 *
 * TABLE OF CONTENTS:
 * 1.  Custom Properties
 * 2.  Reset & Base
 * 3.  Typography
 * 4.  Layout Utilities
 * 5.  Buttons
 * 6.  Section Header
 * 7.  Header & Navigation
 * 8.  Hero (Section 1)
 * 9.  Capabilities (Section 2)
 * 10. Comparison Slider (Section 3)
 * 11. Deployment (Section 4)
 * 12. Solutions (Section 5)
 * 13. API Platform (Section 6)
 * 14. Technology (Section 7)
 * 15. Security (Section 8)
 * 16. CTA (Section 9)
 * 17. Footer
 * 18. Animations
 * 19. Media Queries
 * 20. Print Styles
 */

/* ============================================================
   1. CUSTOM PROPERTIES
   ============================================================ */
:root {
  /* Color System */
  --color-primary: #1677FF;
  --color-primary-hover: #0958D9;
  --color-primary-active: #0045B5;
  --color-primary-light: #E6F4FF;
  --color-primary-lighter: #F0F7FF;
  --color-secondary: #4096FF;

  /* Grays */
  --gray-1: #1D2129;
  --gray-2: #4E5969;
  --gray-3: #86909C;
  --gray-4: #C9CDD4;
  --gray-5: #E5E6EB;
  --gray-6: #F2F3F5;
  --gray-7: #F7F8FA;
  --gray-8: #FAFBFC;

  --color-white: #FFFFFF;
  --color-bg: #F7F8FA;
  --color-success: #52C41A;
  --color-warning: #FAAD14;
  --color-error: #FF4D4F;

  /* Typography */
  --font-fam: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
              "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue",
              Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "Fira Code", Consolas, "Microsoft YaHei", monospace;

  --fs-xs: 0.75rem;    /* 12px */
  --fs-sm: 0.875rem;   /* 14px */
  --fs-base: 1rem;     /* 16px */
  --fs-md: 1.125rem;   /* 18px */
  --fs-lg: 1.25rem;    /* 20px */
  --fs-xl: 1.5rem;     /* 24px */
  --fs-2xl: 2rem;      /* 32px */
  --fs-3xl: 2.5rem;    /* 40px */
  --fs-4xl: 3rem;      /* 48px */
  --fs-hero: 3.25rem;  /* 52px */

  --lh-tight: 1.25;
  --lh-base: 1.6;
  --lh-relaxed: 1.75;

  /* Spacing */
  --sp-xs: 0.25rem;
  --sp-sm: 0.5rem;
  --sp-md: 1rem;
  --sp-lg: 1.5rem;
  --sp-xl: 2rem;
  --sp-2xl: 3rem;
  --sp-3xl: 4rem;
  --sp-4xl: 6rem;
  --sp-5xl: 8rem;

  /* Layout */
  --max-w: 1200px;
  --max-w-wide: 1400px;
  --header-h: 64px;

  /* Visual */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,.06);
  --shadow-lg: 0 8px 24px rgba(0,0,0,.08);
  --shadow-xl: 0 16px 48px rgba(0,0,0,.10);
  --shadow-card: 0 2px 8px rgba(0,0,0,.04), 0 4px 16px rgba(0,0,0,.04);

  --trans-fast: 0.15s ease;
  --trans-base: 0.3s ease;
  --trans-slow: 0.5s ease;
}

/* ============================================================
   2. RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-fam);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--gray-2);
  background:
    linear-gradient(175deg, #FAFBFC 0%, #F7F8FA 30%, #F2F3F5 70%, #F0F1F3 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, button, textarea, select { font: inherit; }

::selection {
  background: var(--color-primary);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 9999;
  padding: 12px 20px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  font-weight: 500;
  transition: top 0.2s;
}
.skip-link:focus { top: 8px; }

/* ============================================================
   3. TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  color: var(--gray-1);
  line-height: var(--lh-tight);
  font-weight: 600;
}

h1 { font-size: var(--fs-hero); font-weight: 700; }
h2 { font-size: var(--fs-3xl); }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-md); }

p { margin-bottom: var(--sp-md); }

/* ============================================================
   4. LAYOUT UTILITIES
   ============================================================ */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
}

.container-wide {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 0 32px;
}

.section {
  padding: var(--sp-5xl) 0;
}

.section-alt {
  background-color: var(--gray-8);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
}

/* Page Layout (multi-page) */
.page-wrapper {
  padding-top: var(--header-h);
}

.page-hero {
  padding: var(--sp-5xl) 0 var(--sp-3xl);
  text-align: center;
}
.page-hero-eyebrow {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.08em;
  margin-bottom: var(--sp-md);
  padding: 4px 14px;
  background: var(--color-primary-light);
  border-radius: var(--radius-full);
}
.page-hero-title {
  font-size: var(--fs-3xl);
  font-weight: 700;
  color: var(--gray-1);
  margin-bottom: var(--sp-md);
  letter-spacing: -0.02em;
}
.page-hero-subtitle {
  font-size: var(--fs-md);
  color: var(--gray-3);
  max-width: 640px;
  margin: 0 auto;
  line-height: var(--lh-relaxed);
}

.page-section {
  padding: var(--sp-4xl) 0;
}
.page-section-alt {
  background-color: var(--gray-8);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
}
.page-section-sm { padding: var(--sp-2xl) 0; }

/* Overview cards (used on landing page) */
.overview-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.overview-card {
  display: block;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  border: 1px solid var(--gray-5);
  text-align: center;
  transition: all var(--trans-base);
  color: inherit;
}
.overview-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.overview-card-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--sp-md);
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--color-primary);
}
.overview-card h3 {
  font-size: var(--fs-base);
  font-weight: 600;
  color: var(--gray-1);
  margin-bottom: 6px;
}
.overview-card p {
  font-size: var(--fs-sm);
  color: var(--gray-3);
  margin: 0;
  line-height: 1.5;
}

/* Back link */
.back-home {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-sm);
  color: var(--gray-3);
  margin-bottom: var(--sp-lg);
  transition: color 0.15s;
}
.back-home:hover { color: var(--color-primary); }

/* Active nav state for current page */
.nav-trigger.current-page {
  color: var(--color-primary);
}

@media (max-width: 1024px) {
  .overview-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .overview-grid { grid-template-columns: 1fr; }
  .page-hero { padding: var(--sp-3xl) 0 var(--sp-2xl); }
}

/* ============================================================
   5. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: var(--fs-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--trans-fast);
  border: none;
  white-space: nowrap;
  line-height: 1.4;
}

.btn-lg {
  padding: 14px 32px;
  font-size: var(--fs-base);
  border-radius: var(--radius-lg);
}

.btn-xl {
  padding: 16px 40px;
  font-size: var(--fs-md);
  border-radius: var(--radius-lg);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 4px rgba(22,119,255,.2);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 4px 16px rgba(22,119,255,.35);
  transform: translateY(-1px);
}
.btn-primary:active {
  background: var(--color-primary-active);
  transform: translateY(0);
}

.btn-outline {
  background: var(--color-white);
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary-hover);
}

.btn-ghost {
  background: none;
  color: var(--gray-1);
}
.btn-ghost:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* ============================================================
   6. SECTION HEADER
   ============================================================ */
.section-header {
  text-align: center;
  margin-bottom: var(--sp-4xl);
}

.section-eyebrow {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--sp-md);
  padding: 4px 14px;
  background: var(--color-primary-light);
  border-radius: var(--radius-full);
}

.section-title {
  color: var(--gray-1);
  font-size: var(--fs-3xl);
  font-weight: 700;
  margin-bottom: var(--sp-md);
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: var(--fs-md);
  color: var(--gray-3);
  max-width: 640px;
  margin: 0 auto;
  line-height: var(--lh-relaxed);
}

/* ============================================================
   7. HEADER & NAVIGATION (extended)
   ============================================================ */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(255,255,255,0);
  backdrop-filter: blur(0);
  -webkit-backdrop-filter: blur(0);
  border-bottom: 1px solid transparent;
  transition: background var(--trans-base),
              backdrop-filter var(--trans-base),
              border-color var(--trans-base),
              box-shadow var(--trans-base);
}

#site-header.scrolled {
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--gray-5);
  box-shadow: 0 1px 4px rgba(0,0,0,.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.logo-img { height: 36px; width: auto; }

/* Desktop Nav */
.header-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-item { position: relative; }

.nav-trigger {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-1);
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--trans-fast);
  white-space: nowrap;
  font-family: inherit;
}
.nav-trigger:hover,
.nav-trigger.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.nav-trigger .arrow {
  display: inline-block;
  width: 12px;
  height: 12px;
  transition: transform var(--trans-fast);
}
.nav-trigger.active .arrow { transform: rotate(180deg); }

.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  min-width: 200px;
  padding: 8px;
  background: var(--color-white);
  border: 1px solid var(--gray-5);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--trans-fast),
              transform var(--trans-fast),
              visibility var(--trans-fast);
  z-index: 100;
}
.nav-dropdown.open {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown a {
  display: block;
  padding: 10px 14px;
  font-size: var(--fs-sm);
  color: var(--gray-2);
  border-radius: var(--radius-sm);
  transition: all 0.15s;
  white-space: nowrap;
}
.nav-dropdown a:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: 4px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
}
.mobile-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--gray-1);
  border-radius: 1px;
  transition: all var(--trans-base);
  transform-origin: center;
}
.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.mobile-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Nav */
#mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(255,255,255,.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  padding: 80px 32px 32px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--trans-base), visibility var(--trans-base);
  overflow-y: auto;
}
#mobile-nav.open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-item { border-bottom: 1px solid var(--gray-5); }

.mobile-nav-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 16px 0;
  font-size: 17px;
  font-weight: 500;
  color: var(--gray-1);
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
}
.mobile-nav-trigger.active { color: var(--color-primary); }

.mobile-nav-trigger svg { transition: transform var(--trans-fast); }
.mobile-nav-trigger.active svg { transform: rotate(180deg); }

.mobile-subnav {
  display: none;
  padding: 0 0 14px 16px;
}
.mobile-subnav.open { display: block; }
.mobile-subnav a {
  display: block;
  padding: 10px 0;
  font-size: 15px;
  color: var(--gray-2);
  transition: color 0.15s;
}
.mobile-subnav a:hover,
.mobile-subnav a:active { color: var(--color-primary); }

.mobile-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}
.mobile-actions .btn {
  justify-content: center;
  padding: 14px;
  font-size: 16px;
}

/* ============================================================
   8. HERO (Section 1)
   ============================================================ */
.section-hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + var(--sp-3xl)) 0 var(--sp-3xl);
}

.hero-grid {
  display: grid;
  grid-template-columns: 45fr 55fr;
  gap: 64px;
  align-items: center;
  width: 100%;
}

/* Hero Text */
.hero-text {
  max-width: 560px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: var(--sp-xl);
}
.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
}

.hero-title {
  font-size: var(--fs-hero);
  font-weight: 700;
  color: var(--gray-1);
  line-height: 1.15;
  margin-bottom: var(--sp-lg);
  letter-spacing: -0.03em;
}
.hero-title strong {
  color: var(--color-primary);
  font-weight: 700;
}

.hero-subtitle {
  font-size: var(--fs-md);
  color: var(--gray-3);
  line-height: var(--lh-relaxed);
  margin-bottom: var(--sp-xl);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--sp-xl);
}
.hero-tag {
  font-size: var(--fs-xs);
  font-weight: 500;
  color: var(--gray-2);
  padding: 4px 12px;
  background: var(--gray-6);
  border-radius: var(--radius-full);
  border: 1px solid var(--gray-5);
}

.hero-cta {
  display: flex;
  gap: 16px;
  margin-bottom: var(--sp-2xl);
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  padding: var(--sp-lg) 0;
  border-top: 1px solid var(--gray-5);
}
.hero-stat {
  flex: 1;
}
.hero-stat-num {
  font-size: var(--fs-2xl);
  font-weight: 700;
  color: var(--gray-1);
  letter-spacing: -0.02em;
}
.hero-stat-unit {
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--color-primary);
}
.hero-stat-label {
  display: block;
  font-size: var(--fs-xs);
  color: var(--gray-3);
  margin-top: 2px;
}
.hero-stat-divider {
  width: 1px;
  height: 40px;
  background: var(--gray-5);
  margin: 0 24px;
}

/* Hero Visual - Console Mockup */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-console {
  width: 100%;
  max-width: 640px;
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  border: 1px solid var(--gray-5);
}

.console-titlebar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--gray-7);
  border-bottom: 1px solid var(--gray-5);
  user-select: none;
}
.console-dots {
  display: flex;
  gap: 6px;
}
.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background: #FF5F56; }
.dot-yellow { background: #FFBD2E; }
.dot-green { background: #27CA40; }
.console-title {
  font-size: var(--fs-xs);
  color: var(--gray-3);
  font-weight: 500;
}

.console-body {
  display: grid;
  grid-template-columns: 180px 1fr;
  min-height: 420px;
}

/* Console Sidebar */
.console-sidebar {
  background: var(--gray-8);
  border-right: 1px solid var(--gray-5);
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.csb-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  font-size: 13px;
  color: var(--gray-2);
  border-radius: var(--radius-md);
  cursor: default;
  transition: all 0.15s;
}
.csb-item:hover { background: var(--gray-6); }
.csb-item.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 500;
}
.csb-item svg { flex-shrink: 0; opacity: 0.7; }
.csb-item.active svg { opacity: 1; }

/* Console Main */
.console-main {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.console-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
}
.ctb-btn {
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid var(--gray-5);
  background: var(--color-white);
  color: var(--gray-2);
  cursor: default;
}
.ctb-btn.primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.ctb-info {
  margin-left: auto;
  font-size: 11px;
  color: var(--gray-4);
}

/* Console Table */
.console-table {
  background: var(--gray-8);
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-5);
  overflow: hidden;
}

.ctable-head {
  display: grid;
  grid-template-columns: 2fr 0.8fr 0.8fr 1fr;
  padding: 10px 14px;
  background: var(--gray-7);
  border-bottom: 1px solid var(--gray-5);
}
.cth-cell {
  font-size: 12px;
  font-weight: 500;
  color: var(--gray-3);
}

.ctable-row {
  display: grid;
  grid-template-columns: 2fr 0.8fr 0.8fr 1fr;
  padding: 10px 14px;
  border-bottom: 1px solid var(--gray-6);
  align-items: center;
  transition: background 0.1s;
}
.ctable-row:last-child { border-bottom: none; }
.ctable-row:hover { background: var(--gray-6); }

.ctr-cell { font-size: 13px; }
.ctr-cell.name { color: var(--gray-1); font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ctr-cell.time { color: var(--gray-4); font-size: 12px; }

.type-tag {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 500;
  border-radius: var(--radius-sm);
}
.type-tag.ofd { background: #E6F4FF; color: var(--color-primary); }

.status {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 500;
  border-radius: var(--radius-sm);
}
.status.done { background: #F0FFF4; color: var(--color-success); }
.status.processing { background: #FFF7E6; color: var(--color-warning); }

/* Console Progress */
.console-progress {
  background: var(--gray-8);
  border-radius: var(--radius-md);
  padding: 14px;
  border: 1px solid var(--gray-5);
}
.cprog-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 12px;
  color: var(--gray-2);
  font-weight: 500;
}
.cprog-pct { color: var(--color-primary); font-weight: 600; }
.cprog-bar {
  height: 6px;
  background: var(--gray-5);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 8px;
}
.cprog-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: 3px;
  transition: width 0.6s ease;
}
.cprog-file {
  font-size: 11px;
  color: var(--gray-4);
}

/* ============================================================
   9. CAPABILITIES (Section 2)
   ============================================================ */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.cap-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-5);
  overflow: hidden;
  transition: all var(--trans-base);
}
.cap-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.cap-screenshot {
  height: 180px;
  background: var(--gray-7);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--gray-5);
  overflow: hidden;
}

.cap-info {
  padding: 20px 24px;
}
.cap-info h3 {
  font-size: var(--fs-base);
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--gray-1);
}
.cap-info p {
  font-size: var(--fs-sm);
  color: var(--gray-3);
  line-height: 1.6;
  margin: 0;
}

/* Cap Screenshot Mini-mockups */
.cs-ofd-to-pdf {
  display: flex;
  align-items: center;
  gap: 16px;
}
.cs-file {
  padding: 24px 28px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  text-align: center;
}
.cs-file-ofd { background: linear-gradient(135deg, #1677FF, #4096FF); }
.cs-file-pdf { background: linear-gradient(135deg, #F5222D, #FF4D4F); }
.cs-arrow { font-size: 24px; color: var(--gray-4); font-weight: bold; }

.cs-ofd-to-img {
  display: flex;
  align-items: center;
  gap: 20px;
}
.cs-doc-icon {
  width: 60px;
  height: 75px;
  background: linear-gradient(135deg, #1677FF, #4096FF);
  border-radius: 6px;
  padding: 12px 10px;
  display: flex;
  align-items: flex-start;
}
.cs-doc-lines {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
}
.cs-doc-lines span {
  height: 3px;
  background: rgba(255,255,255,.6);
  border-radius: 2px;
}
.cs-doc-lines span:nth-child(1) { width: 90%; }
.cs-doc-lines span:nth-child(2) { width: 75%; }
.cs-doc-lines span:nth-child(3) { width: 85%; }
.cs-img-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}
.cs-img-thumb {
  width: 44px;
  height: 32px;
  background: var(--color-white);
  border-radius: 4px;
  border: 1px solid var(--gray-5);
}

.cs-extraction {
  display: flex;
  align-items: center;
  gap: 16px;
}
.cs-extract-doc {
  width: 100px;
  padding: 14px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-5);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.cs-extract-text-lines {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.cs-extract-text-lines span {
  height: 3px;
  background: var(--gray-4);
  border-radius: 2px;
}
.cs-extract-text-lines span:nth-child(1) { width: 90%; }
.cs-extract-text-lines span:nth-child(2) { width: 70%; }
.cs-extract-text-lines span:nth-child(3) { width: 85%; }
.cs-extract-text-lines span:nth-child(4) { width: 60%; }

.cs-extract-table {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
}
.cs-extract-table div {
  height: 16px;
  background: var(--gray-6);
  border-radius: 2px;
}

.cs-extract-result {
  width: 70px;
  height: 70px;
  background: #1E1E1E;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}
.cs-extract-json {
  font-size: 14px;
  font-weight: 700;
  color: #FFD700;
  font-family: var(--font-mono);
}

.cs-preview {
  width: 100%;
  max-width: 260px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-5);
  overflow: hidden;
}
.cs-preview-toolbar {
  display: flex;
  gap: 6px;
  padding: 8px 12px;
  background: var(--gray-7);
  border-bottom: 1px solid var(--gray-5);
}
.cs-preview-toolbar span {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--gray-4);
}
.cs-preview-page {
  padding: 14px 16px;
}
.cs-preview-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cs-pv-title {
  height: 12px;
  width: 60%;
  background: var(--gray-1);
  border-radius: 3px;
}
.cs-pv-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.cs-pv-text span {
  height: 4px;
  background: var(--gray-4);
  border-radius: 2px;
}
.cs-pv-text span:nth-child(1) { width: 95%; }
.cs-pv-text span:nth-child(2) { width: 88%; }
.cs-pv-text span:nth-child(3) { width: 92%; }
.cs-pv-text span:nth-child(4) { width: 70%; }
.cs-pv-table {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 3px;
}
.cs-pv-table div {
  height: 20px;
  background: var(--gray-6);
  border-radius: 2px;
  border: 1px solid var(--gray-5);
}

.cs-api {
  display: flex;
  gap: 16px;
  align-items: stretch;
}
.cs-api-sidebar {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cs-api-method {
  padding: 4px 10px;
  font-size: 10px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
}
.cs-api-method.get { background: #E6F4FF; color: var(--color-primary); }
.cs-api-method.post { background: #F0FFF4; color: var(--color-success); }

.cs-api-main {
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
}
.cs-api-key {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--gray-2);
  background: var(--gray-6);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
}
.cs-api-stats {
  display: flex;
  gap: 20px;
}
.cs-api-stats div {
  text-align: center;
}
.cs-api-stats small {
  display: block;
  font-size: 10px;
  color: var(--gray-4);
}
.cs-api-stats strong {
  font-size: 18px;
  color: var(--gray-1);
}

.cs-batch {
  width: 100%;
  max-width: 280px;
}
.cs-batch-queue {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.cs-bq-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  background: var(--color-white);
  border: 1px solid var(--gray-5);
}
.cs-bq-item.done { border-left: 3px solid var(--color-success); }
.cs-bq-item.processing { border-left: 3px solid var(--color-primary); }
.cs-bq-item.waiting { border-left: 3px solid var(--gray-4); }
.cs-bq-item.done span:last-child { color: var(--color-success); font-weight: 600; }
.cs-bq-item.processing span:last-child { color: var(--color-primary); font-weight: 600; }
.cs-bq-item.waiting span:last-child { color: var(--gray-4); }

/* ============================================================
   10. COMPARISON SLIDER (Section 3)
   ============================================================ */
.comp-tabs {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin-bottom: var(--sp-2xl);
  background: var(--gray-6);
  padding: 4px;
  border-radius: var(--radius-lg);
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}
.comp-tab {
  padding: 10px 20px;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--gray-2);
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--trans-fast);
  font-family: inherit;
}
.comp-tab:hover { color: var(--gray-1); }
.comp-tab.active {
  background: var(--color-white);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.comparison-container {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--gray-5);
  aspect-ratio: 16 / 10;
  background: var(--color-white);
  cursor: ew-resize;
}

.comparison-before,
.comparison-after {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.comparison-after {
  clip-path: inset(0 0 0 50%);
}

.comp-doc {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.comp-doc-header {
  padding: 12px 20px;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--gray-2);
  border-bottom: 1px solid var(--gray-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.ofd-doc .comp-doc-header { background: var(--color-primary-light); color: var(--color-primary); }
.pdf-doc .comp-doc-header { background: #FFF1F0; color: #F5222D; }

.comp-doc-body {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

/* Invoice mockup inside comparison */
.comp-invoice {
  width: 100%;
  max-width: 500px;
  padding: 32px;
  background: var(--color-white);
  border: 1px solid var(--gray-5);
  border-radius: var(--radius-md);
  position: relative;
}
.comp-inv-title {
  font-size: 20px;
  font-weight: 700;
  text-align: center;
  color: var(--gray-1);
  margin-bottom: 16px;
}
.comp-inv-no {
  font-size: 11px;
  color: var(--gray-3);
  text-align: center;
  margin-bottom: 20px;
}
.comp-inv-table {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 16px;
}
.comp-inv-row {
  display: grid;
  grid-template-columns: 2fr 0.8fr 0.6fr 1fr;
  padding: 8px 0;
  font-size: 12px;
  border-bottom: 1px solid var(--gray-5);
  color: var(--gray-2);
}
.comp-inv-row.head {
  font-weight: 600;
  color: var(--gray-1);
  border-bottom-width: 2px;
}
.comp-inv-total {
  text-align: right;
  font-size: 16px;
  font-weight: 700;
  color: var(--gray-1);
  margin-bottom: 20px;
}
.comp-inv-seal {
  text-align: right;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-3);
  padding: 6px 14px;
  border: 2px solid var(--gray-4);
  border-radius: 50%;
  display: inline-block;
  float: right;
  transform: rotate(-15deg);
  opacity: 0.6;
}

.comp-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  color: #fff;
  border-radius: var(--radius-sm);
}
.ofd-badge { background: var(--color-primary); }
.pdf-badge { background: #F5222D; }

/* Comparison handle */
.comparison-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 4px;
  transform: translateX(-50%);
  background: var(--color-primary);
  cursor: ew-resize;
  -webkit-appearance: none;
  appearance: none;
  border: none;
  outline: none;
  z-index: 10;
  opacity: 0;
}
.comparison-handle::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-white);
  border: 3px solid var(--color-primary);
  cursor: ew-resize;
  box-shadow: var(--shadow-lg);
}
.comparison-handle::-moz-range-thumb {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-white);
  border: 3px solid var(--color-primary);
  cursor: ew-resize;
  box-shadow: var(--shadow-lg);
}

/* Pseudo handle line */
.comparison-container::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 4px;
  background: var(--color-primary);
  transform: translateX(-50%);
  z-index: 5;
  pointer-events: none;
}

/* Handle circle */
.comparison-container::before {
  content: '⟷';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-white);
  border: 3px solid var(--color-primary);
  z-index: 6;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  pointer-events: none;
}

/* ============================================================
   11. DEPLOYMENT (Section 4)
   ============================================================ */
.deploy-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: start;
}

.arch-title {
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--gray-1);
  margin-bottom: var(--sp-xl);
  padding-bottom: var(--sp-md);
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

/* Architecture Diagram */
.arch-diagram {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-5);
  padding: 32px;
}

.arch-layer {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--gray-7);
  border-radius: var(--radius-md);
  justify-content: center;
  flex-wrap: wrap;
}

.arch-client { background: #F0F7FF; border: 1px solid #BAE0FF; }
.arch-gateway { background: #FFF7E6; border: 1px solid #FFE58F; }
.arch-service { background: #F0FFF4; border: 1px solid #B7EB8F; }
.arch-data { background: #FFF0F6; border: 1px solid #FFADD2; }

.arch-node {
  padding: 10px 18px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-1);
  border: 1px solid var(--gray-5);
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
}
.arch-node.primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.arch-connector {
  text-align: center;
  padding: 8px 0;
  font-size: 11px;
  color: var(--gray-4);
  font-weight: 500;
}
.arch-connector span {
  display: inline-block;
  padding: 2px 10px;
  background: var(--gray-6);
  border-radius: var(--radius-full);
}

/* Platform Grid */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: var(--sp-xl);
}

.platform-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 12px;
  background: var(--color-white);
  border: 1px solid var(--gray-5);
  border-radius: var(--radius-md);
  transition: all var(--trans-fast);
  text-align: center;
}
.platform-item:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-lighter);
}
.platform-item span {
  font-size: 12px;
  font-weight: 500;
  color: var(--gray-2);
}

.platform-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--gray-6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
  color: var(--gray-3);
}
.platform-icon.win { background: #E6F4FF; color: #0078D4; }
.platform-icon.linux { background: #F0F0F0; color: #333; }
.platform-icon.uos { background: #E6F4FF; color: #1677FF; }
.platform-icon.kylin { background: #FFF0F0; color: #D4380D; }
.platform-icon.docker { background: #E6F4FF; color: #2496ED; }
.platform-icon.k8s { background: #E6F4FF; color: #326CE5; }
.platform-icon.kunpeng { background: #FFF0F0; color: #CF1322; }
.platform-icon.phytium { background: #F0F4FF; color: #1D39C4; }

.deploy-scenarios {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-5);
  padding: 20px 24px;
}
.scenario-label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--gray-1);
  margin-bottom: var(--sp-md);
}
.scenario-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.scenario-tags span {
  font-size: 13px;
  padding: 6px 14px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-weight: 500;
}

/* ============================================================
   12. SOLUTIONS (Section 5)
   ============================================================ */
.sol-tabs {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin-bottom: var(--sp-2xl);
  background: var(--gray-6);
  padding: 4px;
  border-radius: var(--radius-lg);
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}
.sol-tab {
  padding: 10px 24px;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--gray-2);
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--trans-fast);
  font-family: inherit;
  white-space: nowrap;
}
.sol-tab:hover { color: var(--gray-1); }
.sol-tab.active {
  background: var(--color-white);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  font-weight: 600;
}

.sol-panel { display: none; }
.sol-panel.active { display: block; }

.sol-case {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.sol-case-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Solution mockups */
.sol-mockup {
  width: 100%;
  max-width: 440px;
  background: var(--color-white);
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-5);
  box-shadow: var(--shadow-md);
  padding: 32px;
}

.gov-doc-stack { position: relative; }
.gov-doc {
  background: var(--color-white);
  border: 1px solid var(--gray-5);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  position: relative;
  z-index: 3;
  box-shadow: var(--shadow-sm);
}
.gov-doc.shadow {
  position: absolute;
  top: 6px;
  left: 4px;
  right: 4px;
  bottom: -6px;
  background: var(--gray-6);
  border-radius: var(--radius-md);
  z-index: 2;
}
.gov-doc.shadow2 {
  position: absolute;
  top: 12px;
  left: 8px;
  right: 8px;
  bottom: -12px;
  background: var(--gray-5);
  border-radius: var(--radius-md);
  z-index: 1;
}
.gov-doc-header {
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-1);
  margin-bottom: 16px;
  text-align: center;
}
.gov-doc-red-title {
  font-size: 18px;
  font-weight: 700;
  color: #D4380D;
  text-align: center;
  margin-bottom: 20px;
  line-height: 1.4;
}
.gov-doc-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}
.gov-doc-body span {
  height: 4px;
  background: var(--gray-4);
  border-radius: 2px;
}
.gov-doc-body span:nth-child(1) { width: 100%; }
.gov-doc-body span:nth-child(2) { width: 95%; }
.gov-doc-body span:nth-child(3) { width: 90%; }
.gov-doc-body span:nth-child(4) { width: 88%; }
.gov-doc-seal {
  text-align: right;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-error);
  padding: 8px 16px;
  border: 2px solid var(--color-error);
  border-radius: 50%;
  display: inline-block;
  float: right;
  transform: rotate(-10deg);
}

.inv-visual-stack {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.inv-visual-item {
  display: flex;
  align-items: center;
  gap: 16px;
}
.inv-icon-box {
  width: 80px;
  height: 60px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
}
.inv-icon-box.blue { background: linear-gradient(135deg, #1677FF, #4096FF); }
.inv-icon-box.green { background: linear-gradient(135deg, #52C41A, #73D13D); }
.inv-icon-box.orange { background: linear-gradient(135deg, #FA8C16, #FFA940); }
.inv-arrow {
  font-size: 24px;
  color: var(--gray-4);
  font-weight: bold;
}

.bid-file-stack {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.bid-file {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  background: var(--gray-7);
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-5);
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-1);
}
.bid-file-size {
  font-size: 12px;
  color: var(--gray-3);
}

.archive-shelf {
  display: flex;
  gap: 16px;
  justify-content: center;
}
.archive-box {
  width: 90px;
  height: 90px;
  background: linear-gradient(135deg, #1677FF, #4096FF);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}

.ent-system-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}
.ent-system {
  padding: 18px 32px;
  background: var(--gray-7);
  border: 1px solid var(--gray-5);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-1);
}
.ent-system.core {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
  font-weight: 600;
  padding: 24px 40px;
}
.ent-connect {
  width: 2px;
  height: 24px;
  background: var(--gray-4);
}

/* Solution case info */
.sol-case-info h3 {
  font-size: var(--fs-xl);
  font-weight: 700;
  margin-bottom: var(--sp-lg);
}

.sol-case-section {
  margin-bottom: var(--sp-lg);
}
.sol-case-section h4 {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--gray-1);
  margin-bottom: 8px;
  padding-left: 12px;
  border-left: 3px solid var(--color-primary);
}
.sol-case-section p {
  font-size: var(--fs-sm);
  color: var(--gray-2);
  line-height: 1.7;
  margin: 0;
}
.sol-case-section ul {
  list-style: none;
  padding: 0;
}
.sol-case-section li {
  font-size: var(--fs-sm);
  color: var(--gray-2);
  line-height: 1.8;
  padding-left: 16px;
  position: relative;
}
.sol-case-section li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

.sol-case-metrics {
  display: flex;
  gap: 0;
  background: var(--gray-7);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}
.sol-metric {
  flex: 1;
  text-align: center;
  padding: 8px 12px;
}
.sol-metric + .sol-metric {
  border-left: 1px solid var(--gray-5);
}
.sol-metric strong {
  display: block;
  font-size: 11px;
  color: var(--gray-3);
  font-weight: 500;
  margin-bottom: 4px;
}
.sol-metric span {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
}

/* ============================================================
   13. API PLATFORM (Section 6)
   ============================================================ */
.api-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: stretch;
}

/* Code Block */
.api-code-block {
  background: #1E1E1E;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: #2D2D2D;
  border-bottom: 1px solid #3E3E3E;
}
.code-dots {
  display: flex;
  gap: 6px;
}
.code-dots span {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: #555;
}

.code-lang-tabs {
  display: flex;
  gap: 2px;
}
.code-lang {
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 500;
  color: #999;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
}
.code-lang:hover { color: #DDD; }
.code-lang.active {
  background: #3E3E3E;
  color: #FFF;
}

.code-body {
  padding: 24px;
  overflow-x: auto;
}
.code-body pre {
  margin: 0;
}
.code-body code {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.8;
  color: #D4D4D4;
}

.syn-comment { color: #6A9955; }
.syn-cmd { color: #569CD6; font-weight: 600; }
.syn-str { color: #CE9178; }
.syn-key { color: #9CDCFE; }
.syn-num { color: #B5CEA8; }
.syn-json { color: #D4D4D4; }

/* API Dashboard */
.api-dashboard {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.api-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.api-stat-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 20px;
  border: 1px solid var(--gray-5);
  box-shadow: var(--shadow-sm);
}
.api-stat-label {
  font-size: 12px;
  color: var(--gray-3);
  margin-bottom: 6px;
  font-weight: 500;
}
.api-stat-val {
  font-size: 28px;
  font-weight: 700;
  color: var(--gray-1);
  letter-spacing: -0.02em;
}
.api-stat-val .unit {
  font-size: 16px;
  font-weight: 500;
  color: var(--gray-3);
  margin-left: 2px;
}
.api-stat-change {
  font-size: 12px;
  color: var(--color-success);
  margin-top: 4px;
  font-weight: 500;
}
.api-stat-sub {
  font-size: 12px;
  color: var(--gray-4);
  margin-top: 4px;
}

/* API Chart */
.api-chart-area {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 20px;
  border: 1px solid var(--gray-5);
}
.api-chart-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-1);
  margin-bottom: 20px;
}
.api-chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  height: 120px;
}
.api-bar-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  height: 100%;
  justify-content: flex-end;
}
.api-bar {
  width: 100%;
  max-width: 36px;
  background: var(--gray-6);
  border-radius: 4px 4px 0 0;
  transition: background 0.2s;
  min-height: 4px;
}
.api-bar.active {
  background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
}
.api-bar-col span {
  font-size: 10px;
  color: var(--gray-4);
}

/* SDK List */
.api-sdk-list {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-5);
  overflow: hidden;
}
.api-sdk-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--gray-6);
}
.api-sdk-item:last-child { border-bottom: none; }
.sdk-lang {
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  color: #fff;
}
.sdk-lang.java { background: #B07219; }
.sdk-lang.dotnet { background: #68217A; }
.sdk-lang.python { background: #3572A5; }
.sdk-lang.php { background: #4F5D95; }
.sdk-lang.node { background: #339933; }
.sdk-ver { font-size: 12px; color: var(--gray-3); font-family: var(--font-mono); }
.sdk-status { margin-left: auto; font-size: 12px; }
.sdk-status.active { color: var(--color-success); font-weight: 600; }

/* ============================================================
   14. TECHNOLOGY (Section 7)
   ============================================================ */
.tech-diagram {
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--gray-5);
  padding: 40px;
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--sp-3xl);
}

.tech-layer {
  display: flex;
  align-items: stretch;
  gap: 20px;
}

.tech-layer-label {
  width: 100px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  padding: 12px 8px;
  text-align: center;
  writing-mode: horizontal-tb;
}

.tech-layer.engine .tech-layer-label {
  background: var(--color-primary);
  color: #fff;
}

.tech-layer-items {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.tech-item {
  background: var(--gray-7);
  border-radius: var(--radius-md);
  padding: 18px 14px;
  text-align: center;
  border: 1px solid var(--gray-5);
  transition: all var(--trans-fast);
}
.tech-item:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-lighter);
}

.tech-item.core {
  background: linear-gradient(135deg, #E6F4FF, #F0F7FF);
  border-color: #BAE0FF;
}
.tech-item.core:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.tech-item-icon {
  display: block;
  width: 32px;
  height: 32px;
  margin: 0 auto 10px;
  border-radius: var(--radius-sm);
  background: var(--gray-5);
}

.tech-item strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-1);
  margin-bottom: 4px;
}
.tech-item small {
  font-size: 11px;
  color: var(--gray-3);
}

.tech-layer-arrow {
  text-align: center;
  padding: 12px 0;
  font-size: 20px;
  color: var(--gray-4);
}

/* Tech Advantages */
.tech-advantages {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.tech-adv-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--gray-5);
  box-shadow: var(--shadow-sm);
  transition: all var(--trans-base);
}
.tech-adv-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
}
.tech-adv-card h4 {
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--gray-1);
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary-light);
}
.tech-adv-card p {
  font-size: var(--fs-sm);
  color: var(--gray-3);
  line-height: 1.7;
  margin: 0;
}

/* ============================================================
   15. SECURITY (Section 8)
   ============================================================ */
.security-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.security-features {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sec-feature {
  display: flex;
  gap: 16px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  border: 1px solid var(--gray-5);
  box-shadow: var(--shadow-sm);
  transition: all var(--trans-fast);
}
.sec-feature:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}
.sec-feature-icon {
  font-size: 28px;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-7);
  border-radius: var(--radius-md);
}
.sec-feature-info h4 {
  font-size: var(--fs-base);
  font-weight: 600;
  color: var(--gray-1);
  margin-bottom: 6px;
}
.sec-feature-info p {
  font-size: var(--fs-sm);
  color: var(--gray-3);
  line-height: 1.6;
  margin: 0;
}

/* Security Platforms */
.security-platforms h4 {
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--gray-1);
  margin-bottom: 8px;
}
.sec-platforms-sub {
  font-size: var(--fs-sm);
  color: var(--gray-3);
  margin-bottom: var(--sp-lg);
}
.sec-platform-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.sec-platform {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 20px 16px;
  background: var(--color-white);
  border: 1px solid var(--gray-5);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all var(--trans-fast);
}
.sec-platform:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-lighter);
}
.sec-pf-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}
.sec-pf-icon.cpu { background: var(--color-primary); }
.sec-pf-icon.os { background: #52C41A; }
.sec-pf-icon.db { background: #FA8C16; }

.sec-platform span {
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-1);
}
.sec-platform small {
  font-size: 11px;
  color: var(--gray-4);
}

/* ============================================================
   16. CTA (Section 9)
   ============================================================ */
.section-cta {
  position: relative;
  padding: var(--sp-5xl) 0;
  overflow: hidden;
  background: var(--gray-8);
}

.cta-bg-decor {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.cta-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
}
.cta-blob-1 {
  width: 500px;
  height: 500px;
  background: var(--color-primary);
  top: -200px;
  right: -100px;
}
.cta-blob-2 {
  width: 400px;
  height: 400px;
  background: var(--color-secondary);
  bottom: -150px;
  left: -100px;
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.cta-title {
  font-size: var(--fs-3xl);
  font-weight: 700;
  color: var(--gray-1);
  margin-bottom: var(--sp-lg);
  letter-spacing: -0.02em;
}

.cta-subtitle {
  font-size: var(--fs-md);
  color: var(--gray-3);
  margin-bottom: var(--sp-2xl);
  line-height: var(--lh-relaxed);
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: var(--sp-xl);
  flex-wrap: wrap;
}
.cta-btn-main {
  box-shadow: 0 4px 16px rgba(22,119,255,.4);
}
.cta-btn-main:hover {
  box-shadow: 0 8px 24px rgba(22,119,255,.5);
}

.cta-contact {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  font-size: var(--fs-sm);
  color: var(--gray-3);
}
.cta-contact-divider {
  color: var(--gray-5);
}

/* ============================================================
   17. FOOTER
   ============================================================ */
.site-footer {
  background: var(--gray-1);
  color: var(--gray-4);
  padding: var(--sp-4xl) 0 var(--sp-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: var(--sp-3xl);
}

.footer-brand p {
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--gray-4);
  margin-top: var(--sp-md);
}

.footer-logo img {
  height: 30px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.8;
}

.footer-col h4 {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: #fff;
  margin-bottom: var(--sp-lg);
}

.footer-col a {
  display: block;
  font-size: var(--fs-sm);
  color: var(--gray-4);
  padding: 6px 0;
  transition: color 0.15s;
}
.footer-col a:hover { color: #fff; }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding-top: var(--sp-xl);
  border-top: 1px solid rgba(255,255,255,.08);
  font-size: var(--fs-xs);
  color: var(--gray-4);
  flex-wrap: wrap;
}
.footer-bottom-divider {
  color: rgba(255,255,255,.12);
}

/* ============================================================
   18. ANIMATIONS
   ============================================================ */
.anim-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.anim-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.anim-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.anim-up.animate-in,
.anim-left.animate-in,
.anim-right.animate-in {
  opacity: 1;
  transform: translate(0);
}

/* Stagger children */
.anim-stagger > * {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  transition-delay: calc(var(--stagger-index, 0) * 80ms);
}

.anim-stagger.animate-in > * {
  opacity: 1;
  transform: translateY(0);
}

/* Fade only */
.anim-fade {
  opacity: 0;
  transition: opacity 0.6s ease;
}
.anim-fade.animate-in {
  opacity: 1;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .anim-up,
  .anim-left,
  .anim-right,
  .anim-fade,
  .anim-stagger > * {
    opacity: 1;
    transform: none;
    transition: none !important;
  }
  .btn-primary:hover { transform: none; }
}

/* ============================================================
   19. MEDIA QUERIES
   ============================================================ */

/* 1440px */
@media (max-width: 1440px) {
  :root {
    --fs-hero: 2.75rem;
    --fs-3xl: 2.25rem;
  }
  .hero-grid { gap: 48px; }
  .hero-console { max-width: 560px; }
  .console-body { grid-template-columns: 150px 1fr; min-height: 380px; }
  .tech-layer-items { grid-template-columns: repeat(2, 1fr); }
}

/* 1280px */
@media (max-width: 1280px) {
  :root {
    --fs-hero: 2.5rem;
    --fs-3xl: 2rem;
    --fs-2xl: 1.75rem;
  }
  .container, .container-wide { padding: 0 24px; }
  .header-inner { padding: 0 24px; }
  .hero-grid { gap: 40px; }
  .hero-stats { gap: 0; }
  .hero-stat-divider { margin: 0 16px; }
  .cap-grid { gap: 16px; }
  .deploy-layout { gap: 32px; }
  .api-layout { gap: 32px; }
  .security-layout { gap: 32px; }
}

/* 1024px */
@media (max-width: 1024px) {
  :root {
    --fs-hero: 2.25rem;
    --fs-3xl: 1.75rem;
    --sp-5xl: 6rem;
    --sp-4xl: 4rem;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero-text { max-width: 100%; text-align: center; }
  .hero-tags { justify-content: center; }
  .hero-cta { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { max-width: 600px; margin: 0 auto; }
  .cap-grid { grid-template-columns: repeat(2, 1fr); }
  .comp-tabs, .sol-tabs { flex-wrap: wrap; }
  .deploy-layout { grid-template-columns: 1fr; }
  .sol-case { grid-template-columns: 1fr; gap: 32px; }
  .sol-case-visual { order: -1; }
  .sol-mockup { max-width: 100%; }
  .api-layout { grid-template-columns: 1fr; }
  .security-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

/* 768px - Mobile */
@media (max-width: 768px) {
  :root {
    --fs-hero: 2rem;
    --fs-3xl: 1.5rem;
    --fs-xl: 1.25rem;
    --fs-lg: 1.125rem;
    --fs-md: 1rem;
    --sp-5xl: 4rem;
    --sp-4xl: 3rem;
    --sp-3xl: 2.5rem;
    --header-h: 56px;
  }

  /* Header */
  .header-nav { display: none; }
  .header-actions { display: none; }
  .mobile-toggle { display: flex; }

  /* Hero */
  .section-hero { min-height: auto; padding: calc(var(--header-h) + 40px) 0 40px; }
  .hero-console { max-width: 100%; }
  .console-body { grid-template-columns: 1fr; }
  .console-sidebar { display: none; }
  .hero-stats { flex-direction: column; gap: 16px; align-items: center; }
  .hero-stat-divider { display: none; }
  .hero-stat { text-align: center; }

  /* Capabilities */
  .cap-grid { grid-template-columns: 1fr; max-width: 440px; margin: 0 auto; }
  .cap-screenshot { height: 160px; }

  /* Comparison */
  .comparison-container { aspect-ratio: 4/3; }
  .comp-tabs { gap: 2px; }
  .comp-tab { padding: 8px 14px; font-size: 13px; }
  .comp-invoice { padding: 20px; }
  .comp-inv-title { font-size: 16px; }
  .comp-inv-row { font-size: 11px; grid-template-columns: 1.5fr 0.8fr 0.6fr 1fr; }

  /* Deployment */
  .platform-grid { grid-template-columns: repeat(2, 1fr); }

  /* Solutions */
  .sol-tabs { flex-wrap: nowrap; overflow-x: auto; width: 100%; justify-content: flex-start; padding: 4px; -webkit-overflow-scrolling: touch; }
  .sol-tab { flex-shrink: 0; padding: 8px 16px; font-size: 13px; }
  .sol-case-metrics { flex-direction: column; gap: 8px; }
  .sol-metric + .sol-metric { border-left: none; border-top: 1px solid var(--gray-5); padding-top: 12px; }

  /* API */
  .api-stats-grid { grid-template-columns: 1fr 1fr; }
  .code-lang-tabs { flex-wrap: wrap; justify-content: flex-end; }
  .code-lang { padding: 4px 10px; font-size: 11px; }

  /* Tech */
  .tech-diagram { padding: 20px; }
  .tech-layer { flex-direction: column; gap: 8px; }
  .tech-layer-label { width: 100%; border-radius: var(--radius-sm); }
  .tech-layer-items { grid-template-columns: repeat(2, 1fr); }
  .tech-advantages { grid-template-columns: 1fr; }
  .tech-layer-arrow { padding: 6px 0; font-size: 16px; }

  /* Security */
  .sec-platform-grid { grid-template-columns: repeat(2, 1fr); }

  /* CTA */
  .cta-blob-1 { width: 300px; height: 300px; }
  .cta-blob-2 { width: 250px; height: 250px; }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 4px; text-align: center; }
  .footer-bottom-divider { display: none; }
}

/* 480px */
@media (max-width: 480px) {
  :root {
    --fs-hero: 1.75rem;
    --fs-3xl: 1.35rem;
    --fs-2xl: 1.4rem;
  }
  .container, .container-wide { padding: 0 16px; }
  .header-inner { padding: 0 16px; }
  .logo-img { height: 28px; }

  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; }
  .hero-tags { gap: 6px; }
  .hero-tag { font-size: 11px; padding: 3px 10px; }

  .section-header { margin-bottom: var(--sp-2xl); }
  .cta-buttons { flex-direction: column; align-items: center; }
  .cta-buttons .btn { width: 100%; max-width: 280px; }

  .api-stats-grid { grid-template-columns: 1fr; }
  .api-stat-val { font-size: 24px; }

  .code-body { padding: 16px; }
  .code-body code { font-size: 11px; }

  .sec-feature { flex-direction: column; gap: 12px; align-items: flex-start; }
  .sec-feature-icon { width: 40px; height: 40px; font-size: 24px; }

  .cta-contact { flex-direction: column; gap: 4px; }
  .cta-contact-divider { display: none; }

  /* Hide sidebar on very small comparison mockups */
  .comp-inv-table { overflow-x: auto; }
  .comp-inv-row { min-width: 300px; }
}

/* ============================================================
   20. PRINT STYLES
   ============================================================ */
@media print {
  #site-header,
  #mobile-nav,
  .mobile-toggle,
  .cta-bg-decor,
  .comparison-handle,
  .skip-link { display: none !important; }

  body { background: #fff; color: #000; font-size: 12pt; }
  .section { padding: 20pt 0; page-break-inside: avoid; }
  .section-alt { background: #fff; }
  .hero-console,
  .cap-screenshot,
  .comparison-container,
  .sol-mockup,
  .api-code-block,
  .api-dashboard,
  .tech-diagram { border: 1px solid #ccc; box-shadow: none; }
  a { color: #000; text-decoration: underline; }
}

/* ============================================================
   21. BACK TO TOP
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-white);
  border: 1px solid var(--gray-5);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--trans-base), visibility var(--trans-base), transform var(--trans-base), box-shadow var(--trans-base);
  color: var(--gray-2);
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

/* ============================================================
   22. SIDE TOOLBAR (WeChat Customer Service)
   ============================================================ */
.side-toolbar {
  position: fixed;
  right: 32px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.side-tool-item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 14px 10px;
  background: var(--color-white);
  border: 1px solid var(--gray-5);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--trans-base);
  color: var(--gray-2);
  box-shadow: var(--shadow-sm);
  width: 64px;
}
.side-tool-item:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.side-tool-icon {
  flex-shrink: 0;
  transition: color var(--trans-fast);
}

.side-tool-label {
  font-size: 11px;
  font-weight: 500;
  line-height: 1;
  text-align: center;
  white-space: nowrap;
}

/* WeChat popup */
.wechat-popup {
  position: absolute;
  right: calc(100% + 16px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-white);
  border: 1px solid var(--gray-5);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 20px;
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--trans-base), visibility var(--trans-base);
  pointer-events: none;
  white-space: nowrap;
  min-width: 180px;
}
.side-tool-item:hover .wechat-popup,
.side-tool-item.active .wechat-popup {
  opacity: 1;
  visibility: visible;
}

.wechat-popup::after {
  content: '';
  position: absolute;
  right: -6px;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 6px solid var(--color-white);
}

.wechat-qr-code {
  width: 140px;
  height: 140px;
  margin: 0 auto 12px;
  background: var(--gray-7);
  border: 1px solid var(--gray-5);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.qr-placeholder {
  font-size: 13px;
  color: var(--gray-4);
  text-align: center;
  line-height: 1.5;
}

.wechat-popup p {
  font-size: 13px;
  color: var(--gray-2);
  margin: 0;
  line-height: 1.5;
}
.wechat-popup small {
  color: var(--gray-3);
  font-size: 11px;
}

/* Side toolbar + back-to-top spacing */
.side-toolbar {
  right: 32px;
}
.back-to-top {
  right: 32px;
}

@media (max-width: 768px) {
  .side-toolbar {
    right: 16px;
  }
  .side-tool-item {
    width: 52px;
    padding: 12px 8px;
    border-radius: var(--radius-md);
  }
  .side-tool-label { font-size: 10px; }
  .back-to-top {
    right: 20px;
    bottom: 20px;
    width: 40px;
    height: 40px;
  }
  .wechat-popup {
    right: calc(100% + 8px);
    padding: 14px;
    min-width: 160px;
  }
  .wechat-qr-code {
    width: 120px;
    height: 120px;
  }
}

/* ============================================================
   23. TEMPORARY OVERRIDES
   ============================================================ */
.header-actions,
.mobile-actions { display: none !important; }