/* ============================================
   云玺印 Design System - CSS Variables
   ============================================ */

:root {
  /* ---- Brand Colors ---- */
  --color-primary: #2563EB;
  --color-primary-light: #3B82F6;
  --color-primary-dark: #1D4ED8;
  --color-primary-50: #EFF6FF;
  --color-primary-100: #DBEAFE;
  --color-primary-200: #BFDBFE;

  --color-secondary: #0EA5E9;
  --color-secondary-light: #38BDF8;

  --color-accent: #F59E0B;
  --color-accent-light: #FCD34D;

  /* ---- Neutral Colors ---- */
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-400: #9CA3AF;
  --color-gray-500: #6B7280;
  --color-gray-600: #4B5563;
  --color-gray-700: #374151;
  --color-gray-800: #1F2937;
  --color-gray-900: #111827;

  /* ---- Semantic Colors ---- */
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;
  --color-info: #3B82F6;

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

  --text-xs: 0.75rem;      /* 12px */
  --text-sm: 0.875rem;     /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.25rem;      /* 20px */
  --text-2xl: 1.5rem;      /* 24px */
  --text-3xl: 1.875rem;    /* 30px */
  --text-4xl: 2.25rem;     /* 36px */
  --text-5xl: 3rem;        /* 48px */
  --text-6xl: 3.75rem;     /* 60px */

  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;

  /* ---- Spacing ---- */
  --space-1: 0.25rem;      /* 4px */
  --space-2: 0.5rem;       /* 8px */
  --space-3: 0.75rem;      /* 12px */
  --space-4: 1rem;         /* 16px */
  --space-5: 1.25rem;      /* 20px */
  --space-6: 1.5rem;       /* 24px */
  --space-8: 2rem;         /* 32px */
  --space-10: 2.5rem;      /* 40px */
  --space-12: 3rem;        /* 48px */
  --space-16: 4rem;        /* 64px */
  --space-20: 5rem;        /* 80px */
  --space-24: 6rem;        /* 96px */

  /* ---- Border Radius ---- */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* ---- Shadows ---- */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

  /* ---- Transitions ---- */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* ---- Layout ---- */
  --container-max: 1200px;
  --container-narrow: 800px;
  --header-height: 72px;
}
/* ============================================
   云玺印 Design System - Base Reset & Utilities
   ============================================ */

@import url('./variables.css');

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-gray-800);
  background-color: #fff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--color-gray-900);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
  margin-bottom: var(--space-4);
  color: var(--color-gray-600);
}

/* ---- Container ---- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container--narrow {
  max-width: var(--container-narrow);
}

/* ---- Section ---- */
.section {
  padding: var(--space-20) 0;
}

.section--xs {
  padding: var(--space-6) 0;
}

.section--sm {
  padding: var(--space-12) 0;
}

.section--lg {
  padding: var(--space-24) 0;
}

.section--gray {
  background-color: var(--color-gray-50);
}

.section--dark {
  background-color: var(--color-gray-900);
  color: #fff;
}

.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: #fff;
}

.section--dark p {
  color: var(--color-gray-300);
}

.section--primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
}

.section--primary h2,
.section--primary h3 {
  color: #fff;
}

.section--primary p {
  color: rgba(255,255,255,0.85);
}

/* ---- Section Header ---- */
.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-header__label {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
  background: var(--color-primary-50);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

.section-header__title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

.section-header__desc {
  font-size: var(--text-lg);
  color: var(--color-gray-500);
  max-width: 640px;
  margin: 0 auto;
}

/* ---- Grid System ---- */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid--4,
  .grid--3,
  .grid--2 { grid-template-columns: 1fr; }
}

/* ---- Flex Utilities ---- */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* ---- Text Utilities ---- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-sm { font-size: var(--text-sm); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }
.text-3xl { font-size: var(--text-3xl); }
.text-4xl { font-size: var(--text-4xl); }
.text-5xl { font-size: var(--text-5xl); }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.text-primary { color: var(--color-primary); }
.text-gray-400 { color: var(--color-gray-400); }
.text-gray-500 { color: var(--color-gray-500); }
.text-gray-600 { color: var(--color-gray-600); }
.text-white { color: #fff; }
.leading-tight { line-height: var(--leading-tight); }
.leading-relaxed { line-height: var(--leading-relaxed); }

/* ---- Spacing Utilities ---- */
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.pt-4 { padding-top: var(--space-4); }
.pb-4 { padding-bottom: var(--space-4); }

/* ---- Display Utilities ---- */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

@media (max-width: 768px) {
  .hide-mobile { display: none !important; }
}

@media (min-width: 769px) {
  .hide-desktop { display: none !important; }
}
/* ============================================
   云玺印 Design System - Components
   ============================================ */

/* ---- Header / Navbar ---- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-gray-100);
  height: var(--header-height);
  transition: box-shadow var(--transition-base);
}

.header--scrolled {
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-gray-900);
}

.header__logo img {
  height: 36px;
  width: auto;
}

.header__logo span {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header__logo-text-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  line-height: 1.25;
}

.header__logo span.header__logo-slogan {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-gray-600);
  background: none;
  -webkit-background-clip: unset;
  -webkit-text-fill-color: var(--color-gray-600);
  background-clip: unset;
  letter-spacing: 0.02em;
  max-width: min(280px, 42vw);
  white-space: normal;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.header__nav a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-gray-600);
  transition: color var(--transition-fast);
  position: relative;
}

.header__nav a:hover,
.header__nav a.active {
  color: var(--color-primary);
}

.header__nav a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.nav-toggle:hover {
  background: var(--color-gray-100);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-gray-700);
  position: relative;
  transition: background var(--transition-fast);
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-gray-700);
  transition: transform var(--transition-base);
}

.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { bottom: -6px; }

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .header__nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-gray-100);
    box-shadow: var(--shadow-lg);
  }
  .header__nav.open { display: flex; }
  .header__actions .hide-mobile { display: none; }
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.btn--secondary {
  background: #fff;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--secondary:hover {
  background: var(--color-primary-50);
  color: var(--color-primary-dark);
}

.btn--ghost {
  background: transparent;
  color: var(--color-gray-600);
  border-color: transparent;
}

.btn--ghost:hover {
  background: var(--color-gray-100);
  color: var(--color-gray-900);
}

.btn--white {
  background: #fff;
  color: var(--color-primary);
  border-color: #fff;
}

.btn--white:hover {
  background: var(--color-primary-50);
  color: var(--color-primary-dark);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-xl);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

.btn--full {
  width: 100%;
}

.btn__icon {
  width: 18px;
  height: 18px;
}

/* ---- Hero Section ---- */
.hero {
  position: relative;
  padding: calc(var(--header-height) + var(--space-20)) 0 var(--space-20);
  overflow: hidden;
}

.hero--gradient {
  background: linear-gradient(135deg, #EFF6FF 0%, #F0F9FF 50%, #F5F3FF 100%);
}

.hero--dark {
  background: linear-gradient(135deg, var(--color-gray-900) 0%, #0F172A 100%);
  color: #fff;
}

.hero--dark h1,
.hero--dark h2 {
  color: #fff;
}

.hero--dark p {
  color: var(--color-gray-300);
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero__bg::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
}

.hero__bg::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.06) 0%, transparent 70%);
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.hero__content {
  max-width: 560px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary-50);
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
  border: 1px solid var(--color-primary-100);
}

.hero__badge svg {
  width: 16px;
  height: 16px;
}

.hero__title {
  font-size: var(--text-5xl);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: var(--space-6);
  letter-spacing: -0.02em;
}

.hero__title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__desc {
  font-size: var(--text-lg);
  color: var(--color-gray-500);
  margin-bottom: var(--space-8);
  line-height: var(--leading-relaxed);
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
}

.hero__stats {
  display: flex;
  gap: var(--space-8);
}

.hero__stat {
  text-align: left;
}

.hero__stat-value {
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-gray-900);
  line-height: 1;
}

.hero__stat-label {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  margin-top: var(--space-1);
}

.hero__visual {
  position: relative;
}

.hero__image {
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  border: 1px solid var(--color-gray-200);
  background: #fff;
}

.hero__float-card {
  position: absolute;
  background: #fff;
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-gray-100);
  animation: float 3s ease-in-out infinite;
}

.hero__float-card--top-right {
  top: -20px;
  right: -20px;
}

.hero__float-card--bottom-left {
  bottom: 40px;
  left: -30px;
  animation-delay: 1.5s;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero__content { max-width: 100%; }
  .hero__actions { justify-content: center; }
  .hero__stats { justify-content: center; }
  .hero__visual { display: none; }
}

@media (max-width: 640px) {
  .hero { padding-top: calc(var(--header-height) + var(--space-12)); }
  .hero__title { font-size: var(--text-3xl); }
  .hero__desc { font-size: var(--text-base); }
  .hero__stats { flex-direction: column; gap: var(--space-4); }
}

/* ---- Feature Cards ---- */
.feature-card {
  background: #fff;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  border-color: var(--color-primary-200);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-5);
  font-size: 24px;
}

.feature-card__icon--blue {
  background: var(--color-primary-50);
  color: var(--color-primary);
}

.feature-card__icon--green {
  background: #ECFDF5;
  color: var(--color-success);
}

.feature-card__icon--amber {
  background: #FFFBEB;
  color: var(--color-accent);
}

.feature-card__icon--purple {
  background: #F5F3FF;
  color: #7C3AED;
}

.feature-card__icon--pink {
  background: #FDF2F8;
  color: #EC4899;
}

.feature-card__icon--cyan {
  background: #ECFEFF;
  color: #06B6D4;
}

.feature-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.feature-card__desc {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  line-height: var(--leading-relaxed);
  margin-bottom: 0;
}

.feature-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  margin-top: var(--space-4);
}

.feature-card__link:hover {
  gap: var(--space-2);
}

/* ---- Icon Grid (6 features) ---- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .features-grid { grid-template-columns: 1fr; }
}

/* ---- Stats Bar ---- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  padding: var(--space-10) 0;
}

.stats-bar__item {
  text-align: center;
}

.stats-bar__value {
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.stats-bar__label {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  margin-top: var(--space-2);
}

@media (max-width: 640px) {
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
}

/* ---- Logo Cloud ---- */
.logo-cloud {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-10);
  padding: var(--space-8) 0;
  opacity: 0.6;
}

.logo-cloud img {
  height: 28px;
  width: auto;
  filter: grayscale(100%);
  transition: filter var(--transition-base);
}

.logo-cloud img:hover {
  filter: grayscale(0%);
}

/* ---- Pricing Cards ---- */
.pricing-card {
  background: #fff;
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  position: relative;
  transition: all var(--transition-base);
}

.pricing-card--popular {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary), var(--shadow-xl);
  transform: scale(1.02);
}

.pricing-card--popular .pricing-card__badge {
  display: block;
}

.pricing-card__badge {
  display: none;
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  font-size: var(--text-xs);
  font-weight: 700;
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-card__name {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.pricing-card__desc {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  margin-bottom: var(--space-6);
}

.pricing-card__price {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  margin-bottom: var(--space-6);
}

.pricing-card__currency {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-gray-900);
}

.pricing-card__amount {
  font-size: var(--text-5xl);
  font-weight: 800;
  color: var(--color-gray-900);
  line-height: 1;
}

.pricing-card__period {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
}

.pricing-card__features {
  list-style: none;
  margin-bottom: var(--space-8);
}

.pricing-card__features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  font-size: var(--text-sm);
  color: var(--color-gray-600);
}

.pricing-card__features li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
  flex-shrink: 0;
}

/* ---- Testimonial / Case Card ---- */
.case-card {
  background: #fff;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
}

.case-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.case-card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.case-card__body {
  padding: var(--space-6);
}

.case-card__tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-50);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-3);
}

.case-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.case-card__desc {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  margin-bottom: var(--space-4);
}

.case-card__meta {
  display: flex;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-gray-400);
}

/* ---- CTA Section ---- */
.cta-section {
  text-align: center;
  padding: var(--space-16) 0;
}

.cta-section__title {
  font-size: var(--text-4xl);
  font-weight: 800;
  margin-bottom: var(--space-4);
}

.cta-section__desc {
  font-size: var(--text-lg);
  color: var(--color-gray-500);
  margin-bottom: var(--space-8);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section__actions {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* ---- Footer ---- */
.footer {
  background: var(--color-gray-900);
  color: var(--color-gray-400);
  padding: var(--space-16) 0 var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer__brand p {
  font-size: var(--text-sm);
  color: var(--color-gray-400);
  margin-top: var(--space-4);
  max-width: 280px;
}

.footer__col-title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-4);
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: var(--space-2);
}

.footer__links a {
  font-size: var(--text-sm);
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
}

.footer__links a:hover {
  color: #fff;
}

.footer__bottom {
  border-top: 1px solid var(--color-gray-800);
  padding-top: var(--space-8);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-sm);
}

.footer__icp a {
  color: var(--color-gray-500);
}

/* 移动端：品牌单独一行，下方「产品 / 支持 / 关于」三列并排，缩短纵向高度 */
@media (max-width: 768px) {
  .footer {
    padding: var(--space-10) 0 var(--space-6);
  }

  .footer__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-6) var(--space-4);
    margin-bottom: var(--space-8);
  }

  .footer__grid > :first-child {
    grid-column: 1 / -1;
  }

  .footer__brand p,
  .footer__grid > :first-child > p {
    max-width: none;
    line-height: var(--leading-normal);
  }

  .footer__col-title {
    margin-bottom: var(--space-2);
    font-size: var(--text-xs);
    letter-spacing: 0.04em;
  }

  .footer__links li {
    margin-bottom: 6px;
  }

  .footer__links a {
    font-size: var(--text-xs);
    line-height: 1.45;
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    gap: var(--space-3);
    padding-top: var(--space-6);
    font-size: var(--text-xs);
  }
}

@media (max-width: 380px) {
  .footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer__grid > :nth-child(4) {
    grid-column: 1 / -1;
  }
}

/* ---- Scroll Animations ---- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-on-scroll.delay-1 { transition-delay: 0.1s; }
.animate-on-scroll.delay-2 { transition-delay: 0.2s; }
.animate-on-scroll.delay-3 { transition-delay: 0.3s; }
.animate-on-scroll.delay-4 { transition-delay: 0.4s; }
.animate-on-scroll.delay-5 { transition-delay: 0.5s; }

/* ---- Trust Bar ---- */
.trust-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  padding: var(--space-6) 0;
  flex-wrap: wrap;
}

.trust-bar__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-gray-500);
}

.trust-bar__item svg {
  width: 16px;
  height: 16px;
  color: var(--color-success);
}

/* ---- Feature Showcase (alternating rows) ---- */
.showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  padding: var(--space-16) 0;
}

.showcase--reverse {
  direction: rtl;
}

.showcase--reverse > * {
  direction: ltr;
}

.showcase__content {
  max-width: 480px;
}

.showcase__label {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.showcase__title {
  font-size: var(--text-3xl);
  font-weight: 800;
  margin-bottom: var(--space-4);
}

.showcase__desc {
  font-size: var(--text-base);
  color: var(--color-gray-500);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

.showcase__list {
  list-style: none;
}

.showcase__list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  font-size: var(--text-sm);
  color: var(--color-gray-600);
}

.showcase__list li svg {
  width: 20px;
  height: 20px;
  color: var(--color-success);
  flex-shrink: 0;
  margin-top: 2px;
}

.showcase__image {
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-gray-200);
}

@media (max-width: 1024px) {
  .showcase {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .showcase--reverse { direction: ltr; }
  .showcase__content { max-width: 100%; text-align: center; }
  .showcase__list { display: inline-block; text-align: left; }
}

/* ---- Floating Contact Widget ---- */
.contact-widget {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-3);
}

.contact-widget__btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-fast);
}

.contact-widget__btn:hover {
  background: var(--color-primary-dark);
  transform: scale(1.05);
  color: #fff;
}

.contact-widget__btn svg {
  width: 24px;
  height: 24px;
}

/* ---- Back to Top ---- */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: calc(var(--space-6) + 70px);
  z-index: 999;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--color-gray-200);
  color: var(--color-gray-600);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ---- Badge / Tag ---- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
}

.badge--primary {
  background: var(--color-primary-50);
  color: var(--color-primary);
}

.badge--success {
  background: #ECFDF5;
  color: var(--color-success);
}

.badge--accent {
  background: #FFFBEB;
  color: var(--color-accent);
}

/* ============================================
   Comparison Table
   ============================================ */

.table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  font-size: var(--text-sm);
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-3) var(--space-4);
  text-align: center;
  border-bottom: 1px solid var(--color-gray-200);
  white-space: nowrap;
}

.comparison-table th {
  background: var(--color-gray-800);
  color: white;
  font-weight: 600;
  font-size: var(--text-base);
  padding: var(--space-4) var(--space-4);
}

.comparison-table td:first-child {
  text-align: left;
  font-weight: 600;
  color: var(--color-gray-700);
  white-space: nowrap;
  background: var(--color-gray-50);
}

.comparison-table tbody tr:nth-child(even) {
  background: var(--color-gray-50);
}

.comparison-table tbody tr:nth-child(even) td:first-child {
  background: var(--color-gray-100);
}

.comparison-table tbody tr:hover {
  background: var(--color-primary-50);
}

.comparison-table th.highlight,
.comparison-table td.highlight {
  background: var(--color-primary);
  color: white;
  font-weight: 600;
  position: relative;
}

.comparison-table td.highlight {
  background: var(--color-primary-50);
  color: var(--color-primary-dark);
  border-left: 3px solid var(--color-primary);
  border-right: 3px solid var(--color-primary);
}

.comparison-table thead th.highlight {
  background: var(--color-primary);
  color: white;
  border-bottom: 3px solid var(--color-primary-dark);
}

.icon-yes {
  color: var(--color-success);
  font-weight: bold;
  font-size: var(--text-lg);
}

.icon-no {
  color: var(--color-error);
  font-weight: bold;
  font-size: var(--text-lg);
}

.icon-mid {
  color: var(--color-warning);
  font-weight: bold;
  font-size: var(--text-lg);
}

@media (max-width: 768px) {
  .comparison-table th,
  .comparison-table td {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-xs);
  }
}