/* ============================================
   玩啥鸭官网 - 全局样式表
   纯 CSS，无框架依赖
   ============================================ */

/* CSS Variables */
:root {
  --color-brand-amber: #f5a623;
  --color-brand-amber-light: #fff4dd;
  --color-brand-dark: #1a1a2e;
  --color-brand-ink: #20202a;
  --color-brand-muted: #6b7280;
  --color-brand-cream: #fef9f0;
  --color-white: #ffffff;
  --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;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  
  --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);
  
  --transition-colors: color 0.15s, background-color 0.15s, border-color 0.15s;
  --transition-all: all 0.2s ease-in-out;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--color-brand-ink);
  background: var(--color-brand-cream);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-brand-dark);
  font-weight: 700;
  line-height: 1.2;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

@media (min-width: 640px) {
  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }
  h3 { font-size: 1.5rem; }
}

@media (min-width: 768px) {
  h1 { font-size: 3rem; }
  h2 { font-size: 2.25rem; }
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.container-sm {
  max-width: 768px;
}

.container-md {
  max-width: 1024px;
}

.container-lg {
  max-width: 1200px;
}

/* ============================================
   Layout Components
   ============================================ */

/* Section */
.section {
  padding: 4rem 0;
}

@media (min-width: 768px) {
  .section {
    padding: 5rem 0;
  }
}

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

.section-cream {
  background: var(--color-brand-cream);
}

.section-amber-light {
  background: var(--color-brand-amber-light);
}

.section-dark {
  background: var(--color-brand-dark);
  color: var(--color-white);
}

/* Grid */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }

@media (min-width: 640px) {
  .sm\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .sm\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
  .sm\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 768px) {
  .md\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
  .md\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
}

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

/* Flex */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.flex-wrap {
  flex-wrap: wrap;
}

.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }

/* ============================================
   Header
   ============================================ */

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-gray-100);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.header-logo img {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
}

.header-logo span {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-brand-dark);
  display: none;
}

@media (min-width: 640px) {
  .header-logo span {
    display: block;
  }
}

.header-nav {
  display: none;
  align-items: center;
  gap: 0.25rem;
}

@media (min-width: 1024px) {
  .header-nav {
    display: flex;
  }
}

.header-nav a {
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-brand-muted);
  border-radius: var(--radius-sm);
  transition: var(--transition-colors);
}

.header-nav a:hover {
  color: var(--color-brand-amber);
  background: var(--color-brand-amber-light);
}

.header-actions {
  display: none;
  align-items: center;
  gap: 0.75rem;
}

@media (min-width: 1024px) {
  .header-actions {
    display: flex;
  }
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: flex;
  padding: 0.5rem;
  color: var(--color-brand-ink);
  border-radius: var(--radius-sm);
  transition: var(--transition-colors);
}

.mobile-menu-btn:hover {
  background: var(--color-brand-amber-light);
}

.mobile-menu-btn svg {
  width: 1.5rem;
  height: 1.5rem;
}

@media (min-width: 1024px) {
  .mobile-menu-btn {
    display: none;
  }
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 60;
  opacity: 0;
  transition: opacity 0.3s;
}

.mobile-nav-overlay.active {
  display: block;
  opacity: 1;
}

/* Mobile Nav Panel */
.mobile-nav {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 280px;
  background: var(--color-white);
  z-index: 70;
  transform: translateX(100%);
  transition: transform 0.3s ease-in-out;
  padding: 1rem;
}

.mobile-nav.active {
  transform: translateX(0);
}

.mobile-nav-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-gray-200);
  margin-bottom: 1rem;
}

.mobile-nav-close {
  padding: 0.5rem;
  color: var(--color-brand-ink);
  border-radius: var(--radius-sm);
}

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

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mobile-nav-links a {
  display: block;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-brand-ink);
  border-radius: var(--radius-sm);
  transition: var(--transition-colors);
}

.mobile-nav-links a:hover {
  background: var(--color-brand-amber-light);
  color: var(--color-brand-amber);
}

.mobile-nav-actions {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-gray-200);
}

/* ============================================
   Footer
   ============================================ */

.footer {
  background: var(--color-brand-dark);
  color: var(--color-white);
  margin-top: auto;
}

.footer-content {
  padding: 3rem 0;
}

@media (min-width: 768px) {
  .footer-content {
    padding: 4rem 0;
  }
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

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

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

.footer-brand-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.footer-brand-logo img {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
}

.footer-brand-logo span {
  font-size: 1.125rem;
  font-weight: 700;
}

.footer-brand p {
  font-size: 0.875rem;
  color: var(--color-gray-400);
  line-height: 1.7;
  margin-bottom: 0.75rem;
}

.footer-note {
  font-size: 0.75rem;
  color: var(--color-gray-500);
}

.footer-section h4 {
  color: var(--color-white);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.footer-section ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-section a {
  font-size: 0.875rem;
  color: var(--color-gray-400);
  transition: color 0.15s;
}

.footer-section a:hover {
  color: var(--color-brand-amber);
}

.footer-contact li {
  font-size: 0.875rem;
  color: var(--color-gray-400);
  margin-bottom: 0.5rem;
}

.footer-contact a {
  color: var(--color-brand-amber);
}

.footer-contact a:hover {
  text-decoration: underline;
}

.footer-bottom {
  padding: 1.5rem 0;
  border-top: 1px solid var(--color-gray-700);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

@media (min-width: 640px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-bottom-left {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--color-gray-500);
}

.footer-bottom-right {
  display: flex;
  gap: 1rem;
}

.footer-bottom-right a {
  font-size: 0.75rem;
  color: var(--color-gray-500);
  transition: color 0.15s;
}

.footer-bottom-right a:hover {
  color: var(--color-brand-amber);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  transition: var(--transition-all);
  cursor: pointer;
  border: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn:focus {
  outline: none;
}

.btn:focus-visible {
  box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.3);
}

/* Button Variants */
.btn-primary {
  background: var(--color-brand-amber);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: #e09515;
}

.btn-secondary {
  background: var(--color-brand-dark);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--color-brand-ink);
}

.btn-outline {
  border: 2px solid var(--color-brand-amber);
  color: var(--color-brand-amber);
}

.btn-outline:hover {
  background: var(--color-brand-amber-light);
}

.btn-ghost {
  color: var(--color-brand-ink);
}

.btn-ghost:hover {
  background: var(--color-brand-amber-light);
}

/* Button Sizes */
.btn-sm {
  padding: 0.375rem 1rem;
  font-size: 0.875rem;
  border-radius: var(--radius-xl);
}

.btn-md {
  padding: 0.625rem 1.5rem;
  font-size: 1rem;
  border-radius: var(--radius-xl);
}

.btn-lg {
  padding: 0.75rem 2rem;
  font-size: 1.125rem;
  border-radius: var(--radius-2xl);
}

/* ============================================
   Cards
   ============================================ */

.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-100);
  overflow: hidden;
}

.card-hover:hover {
  box-shadow: var(--shadow-md);
}

.card-p-sm { padding: 1rem; }
.card-p-md { padding: 1.5rem; }
.card-p-lg { padding: 2rem; }

/* ============================================
   Badges
   ============================================ */

.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
  background: var(--color-brand-amber);
  color: var(--color-white);
}

.badge-outline {
  background: transparent;
  border: 1px solid var(--color-brand-amber);
  color: var(--color-brand-amber);
}

.badge-light {
  background: var(--color-brand-amber-light);
  color: var(--color-brand-amber);
}

/* ============================================
   Form Elements
   ============================================ */

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-brand-ink);
  margin-bottom: 0.375rem;
}

.form-label .required {
  color: #ef4444;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.625rem 1rem;
  font-size: 0.875rem;
  color: var(--color-brand-ink);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-gray-300);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-brand-amber);
  box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.15);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1rem;
  padding-right: 2.5rem;
}

.form-error {
  color: #ef4444;
  font-size: 0.75rem;
  margin-top: 0.25rem;
}

.form-radio-group {
  display: flex;
  gap: 1rem;
}

.form-radio {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-brand-ink);
  cursor: pointer;
}

.form-radio input {
  color: var(--color-brand-amber);
  accent-color: var(--color-brand-amber);
}

/* ============================================
   FAQ Component
   ============================================ */

.faq-list {
  max-width: 768px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-100);
  overflow: hidden;
  margin-bottom: 1rem;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-brand-ink);
  background: none;
  cursor: pointer;
}

.faq-question:hover {
  background: var(--color-gray-100);
}

.faq-icon {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--color-brand-muted);
  flex-shrink: 0;
  transition: transform 0.2s;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 0 1.25rem 1.25rem;
  color: var(--color-brand-muted);
  line-height: 1.7;
}

/* FAQ Group Tabs */
.faq-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.faq-tab {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-brand-muted);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: var(--transition-colors);
}

.faq-tab:hover {
  border-color: var(--color-brand-amber);
  color: var(--color-brand-amber);
}

.faq-tab.active {
  background: var(--color-brand-amber);
  border-color: var(--color-brand-amber);
  color: var(--color-white);
}

.faq-group {
  display: none;
}

.faq-group.active {
  display: block;
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
  padding: 3rem 0 4rem;
  background: linear-gradient(to bottom, var(--color-brand-amber-light), var(--color-brand-cream));
}

@media (min-width: 768px) {
  .hero {
    padding: 5rem 0 7rem;
  }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

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

.hero-content {
  text-align: center;
}

@media (min-width: 1024px) {
  .hero-content {
    text-align: left;
  }
}

.hero-badge {
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-brand-dark);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

@media (min-width: 640px) {
  .hero-title {
    font-size: 2.5rem;
  }
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 3rem;
  }
}

.hero-subtitle {
  margin-top: 1.5rem;
  font-size: 1rem;
  color: var(--color-brand-muted);
  line-height: 1.7;
  max-width: 36rem;
}

@media (min-width: 640px) {
  .hero-subtitle {
    font-size: 1.125rem;
  }
}

@media (min-width: 1024px) {
  .hero-subtitle {
    margin-left: 0;
    margin-right: 0;
  }
}

.hero-actions {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

@media (min-width: 640px) {
  .hero-actions {
    flex-direction: row;
    justify-content: center;
  }
}

@media (min-width: 1024px) {
  .hero-actions {
    justify-content: flex-start;
  }
}

.hero-visual {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-visual .placeholder {
  display: none;
}

@media (min-width: 640px) {
  .hero-visual .placeholder {
    display: block;
  }
}

.hero-qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.hero-qr span {
  font-size: 0.75rem;
  color: var(--color-brand-muted);
}

/* ============================================
   Page Hero (Inner Pages)
   ============================================ */

.page-hero {
  padding: 3rem 0;
  background: linear-gradient(to bottom, var(--color-brand-amber-light), var(--color-brand-cream));
  text-align: center;
}

.page-hero h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

@media (min-width: 768px) {
  .page-hero h1 {
    font-size: 2.5rem;
  }
}

.page-hero p {
  max-width: 48rem;
  margin: 0 auto;
  color: var(--color-brand-muted);
  line-height: 1.7;
}

/* ============================================
   Feature Grid
   ============================================ */

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

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

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

.feature-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-100);
  padding: 1.5rem;
  text-align: center;
  transition: box-shadow 0.2s;
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 3rem;
  height: 3rem;
  margin: 0 auto 1rem;
  background: var(--color-brand-amber-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-brand-amber);
}

.feature-icon svg {
  width: 1.5rem;
  height: 1.5rem;
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--color-brand-muted);
  line-height: 1.5;
}

/* ============================================
   Problem Solution Section
   ============================================ */

.problem-solution-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .problem-solution-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.problem-solution-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
}

.problem-solution-card .badge {
  margin-bottom: 1rem;
}

.problem-solution-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.problem-solution-card .problem {
  font-size: 0.875rem;
  color: var(--color-brand-muted);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.problem-solution-card .solution {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-brand-amber);
  padding-top: 1rem;
  border-top: 1px solid var(--color-gray-100);
}

/* ============================================
   CTA Section
   ============================================ */

.cta-section {
  background: linear-gradient(135deg, var(--color-brand-amber), #e09515);
  color: var(--color-white);
  padding: 4rem 0;
  text-align: center;
}

.cta-section h2 {
  color: var(--color-white);
  font-size: 1.75rem;
  margin-bottom: 1rem;
}

@media (min-width: 768px) {
  .cta-section h2 {
    font-size: 2.25rem;
  }
}

.cta-section p {
  max-width: 32rem;
  margin: 0 auto 2rem;
  opacity: 0.9;
}

.cta-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

@media (min-width: 640px) {
  .cta-buttons {
    flex-direction: row;
    justify-content: center;
  }
}

.cta-section .btn-primary {
  background: var(--color-white);
  color: var(--color-brand-amber);
}

.cta-section .btn-primary:hover {
  background: var(--color-brand-cream);
}

.cta-section .btn-outline {
  border-color: var(--color-white);
  color: var(--color-white);
}

.cta-section .btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
}

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

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.comparison-table th,
.comparison-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-gray-100);
}

.comparison-table th {
  background: var(--color-brand-amber-light);
  font-weight: 600;
  color: var(--color-brand-dark);
  font-size: 0.875rem;
}

.comparison-table td {
  font-size: 0.875rem;
  color: var(--color-brand-muted);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

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

@media (max-width: 640px) {
  .comparison-table {
    font-size: 0.75rem;
  }
  
  .comparison-table th,
  .comparison-table td {
    padding: 0.75rem 0.5rem;
  }
}

/* ============================================
   Process Steps
   ============================================ */

.process-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .process-steps {
    grid-template-columns: repeat(4, 1fr);
  }
}

.process-step {
  text-align: center;
  position: relative;
}

.process-step:not(:last-child)::after {
  display: none;
}

@media (min-width: 1024px) {
  .process-step:not(:last-child)::after {
    display: block;
    content: '';
    position: absolute;
    top: 1.5rem;
    right: -0.75rem;
    width: 1.5rem;
    height: 2px;
    background: var(--color-brand-amber);
  }
}

.process-step-number {
  width: 3rem;
  height: 3rem;
  margin: 0 auto 1rem;
  background: var(--color-brand-amber);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
}

.process-step h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.process-step p {
  font-size: 0.875rem;
  color: var(--color-brand-muted);
}

/* ============================================
   Breadcrumbs
   ============================================ */

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-brand-muted);
  padding: 1rem 0;
}

.breadcrumbs a {
  color: var(--color-brand-amber);
}

.breadcrumbs a:hover {
  text-decoration: underline;
}

.breadcrumbs span {
  color: var(--color-gray-400);
}

/* ============================================
   AI Answer Cards
   ============================================ */

.ai-answers-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .ai-answers-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .ai-answers-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.ai-answer-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-100);
  padding: 1.5rem;
  display: block;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.ai-answer-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-brand-amber);
}

.ai-answer-card p {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-brand-ink);
  margin-bottom: 0.5rem;
}

.ai-answer-card .link {
  font-size: 0.75rem;
  color: var(--color-brand-muted);
}

/* ============================================
   Value Cards
   ============================================ */

.value-cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .value-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.value-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-100);
  padding: 1.5rem;
}

.value-card .badge {
  margin-bottom: 0.75rem;
}

.value-card h3 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.value-card p {
  font-size: 0.875rem;
  color: var(--color-brand-muted);
  margin-bottom: 0.5rem;
}

.value-card .value-tag {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-brand-amber);
}

/* ============================================
   Text Content
   ============================================ */

.text-content {
  max-width: 48rem;
  margin: 0 auto;
}

.text-content h2 {
  margin-bottom: 1rem;
}

.text-content p {
  color: var(--color-brand-muted);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.text-content section {
  margin-bottom: 2rem;
}

.text-content section h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

/* ============================================
   Form Alert
   ============================================ */

.form-alert {
  padding: 1rem;
  border-radius: var(--radius-xl);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1.25rem;
}

.form-alert-success {
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.form-alert-error {
  background: #fef2f2;
  color: #dc2626;
  border: 1px solid #fecaca;
}

/* ============================================
   Placeholder
   ============================================ */

.placeholder {
  background: var(--color-brand-amber-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-brand-muted);
  font-size: 0.875rem;
  text-align: center;
  padding: 1rem;
}

.placeholder-1-1 {
  aspect-ratio: 1 / 1;
}

.placeholder-4-3 {
  aspect-ratio: 4 / 3;
}

.placeholder-phone {
  width: 192px;
  height: 384px;
}

/* ============================================
   Utilities
   ============================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mt-10 { margin-top: 2.5rem; }
.mt-12 { margin-top: 3rem; }

.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-10 { margin-bottom: 2.5rem; }
.mb-12 { margin-bottom: 3rem; }

.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }
.py-24 { padding-top: 6rem; padding-bottom: 6rem; }
.py-28 { padding-top: 7rem; padding-bottom: 7rem; }

.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-8 { padding-top: 2rem; padding-bottom: 2rem; }
.p-4 { padding: 1rem; }
.p-5 { padding: 1.25rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }

.w-full { width: 100%; }
.max-w-xl { max-width: 36rem; }
.max-w-2xl { max-width: 42rem; }
.max-w-3xl { max-width: 48rem; }
.max-w-4xl { max-width: 56rem; }
.max-w-5xl { max-width: 64rem; }
.max-w-full { max-width: 100%; }

.mx-auto { margin-left: auto; margin-right: auto; }
.hidden { display: none; }

@media (min-width: 640px) {
  .sm\:block { display: block; }
  .sm\:hidden { display: none; }
  .sm\:flex { display: flex; }
  .sm\:grid { display: grid; }
}

@media (min-width: 768px) {
  .md\:block { display: block; }
  .md\:hidden { display: none; }
}

@media (min-width: 1024px) {
  .lg\:block { display: block; }
  .lg\:hidden { display: none; }
  .lg\:flex { display: flex; }
  .lg\:text-left { text-align: left; }
  .lg\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
}

.leading-relaxed { line-height: 1.7; }
.tracking-tight { letter-spacing: -0.02em; }

.border-t { border-top: 1px solid var(--color-gray-200); }
.border-gray-100 { border-color: var(--color-gray-100); }
.border-gray-700 { border-color: var(--color-gray-700); }

.overflow-hidden { overflow: hidden; }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-2xl { border-radius: var(--radius-2xl); }
.rounded-full { border-radius: 9999px; }

.shrink-0 { flex-shrink: 0; }