/* ================================
   RockData.AI - Main Stylesheet
   ================================ */

/* ================================
   CSS Variables & Design System
   ================================ */
:root {
  /* Primary Colors */
  --primary-200: #bae6fd;
  --primary-300: #7dd3fc;
  --primary-400: #38bdf8;
  --primary-500: #0ea5e9;
  --primary-600: #0284c7;
  --primary-700: #0369a1;
  --primary-800: #075985;

  /* Category Colors */
  --green-500: #16a34a;
  --green-50: #dcfce7;
  --blue-600: #2563eb;
  --blue-50: #dbeafe;
  --purple-600: #9333ea;
  --purple-50: #f3e8ff;
  --orange-600: #ea580c;
  --orange-100: #fed7aa;
  
  /* Gold Colors */
  --gold-500: #d4af37;
  --gold-600: #b8941f;
  --gold-700: #8b6914;

  /* Neutral Colors */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 5rem;

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

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

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

/* ================================
   Reset & Base Styles
   ================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--gray-900);
  line-height: 1.6;
  background-color: white;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-normal);
}

a:hover {
  color: var(--primary-600);
}

/* ================================
   Typography
   ================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: 2.5rem;
  color: var(--gray-900);
}

h2 {
  font-size: 2rem;
  color: var(--gray-900);
}

h3 {
  font-size: 1.5rem;
  color: var(--gray-800);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--gray-700);
}

@media (min-width: 768px) {
  h1 {
    font-size: 3.75rem;
  }

  h2 {
    font-size: 2.5rem;
  }
}

/* ================================
   Layout Components
   ================================ */
.container {
  max-width: 1560px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

@media (min-width: 640px) {
  .container {
    padding: 0 var(--spacing-md);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--spacing-lg);
  }
}

@media (min-width: 1560px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}



.section {
  padding: var(--spacing-3xl) 0;
}

/* ================================
   Header & Navigation
   ================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  border-bottom: none;
  box-shadow: none;
  transition: all var(--transition-normal);
}

.header.scrolled {
  background: white;
  border-bottom: 1px solid var(--gray-100);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.header.scrolled .nav-logo {
  color: var(--gray-900);
}

.header.scrolled .nav-link {
  color: var(--gray-600);
}

.header.scrolled .nav-link:hover,
.header.scrolled .nav-link.active {
  color: var(--primary-600);
}

.header.scrolled .nav-chevron {
  color: var(--gray-600);
}

.header.scrolled .btn-nav-login {
  background: var(--primary-500);
  color: white;
  border-color: var(--primary-500);
}

/* Solid header for non-animated pages */
.header-solid {
  background: white;
  border-bottom: 1px solid var(--gray-100);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.header-solid .nav-logo {
  color: var(--gray-900);
}

.header-solid .nav-link {
  color: var(--gray-600);
}

.header-solid .nav-link:hover,
.header-solid .nav-link.active {
  color: var(--primary-600);
}

.header-solid .nav-link::after {
  background: var(--primary-500);
}

.header-solid .nav-chevron {
  color: var(--gray-600);
}

.header-solid .lang-switcher {
  background: var(--gray-100);
}

.header-solid .lang-switcher button {
  color: var(--gray-600);
}

.header-solid .lang-switcher button:hover {
  background: var(--gray-200);
  color: var(--gray-900);
}

.header-solid .lang-switcher button.active {
  background: white;
  color: var(--primary-600);
  box-shadow: var(--shadow-sm);
}

.header-solid .btn-nav-login {
  background: var(--primary-500);
  color: white;
  border-color: var(--primary-500);
}

.header-solid .btn-nav-login:hover {
  background: var(--primary-600);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
  position: relative;
  gap: var(--spacing-lg);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 1.25rem;
  font-weight: 700;
  color: white;
}

.nav-logo:hover {
  color: white;
}

.nav-logo-icon {
  width: 40px;
  height: 40px;
  background: var(--primary-500);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.875rem;
}

.nav-menu {
  display: none;
  gap: var(--spacing-xl);
  list-style: none;
  align-items: center;
}

@media (min-width: 768px) {
  .nav-menu {
    display: flex;
  }
}

.nav-dropdown {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  cursor: pointer;
}

.nav-chevron {
  color: white;
  transition: transform var(--transition-fast);
}

.nav-dropdown:hover .nav-chevron {
  transform: rotate(180deg);
}

.nav-link {
  color: white;
  font-weight: 500;
  transition: color var(--transition-normal);
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: white;
  transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link:hover,
.nav-link.active {
  color: white;
}

/* Navigation Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Login Button in Nav */
.btn-nav-login {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.875rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: all var(--transition-normal);
}

.btn-nav-login:hover {
  background: rgba(255, 255, 255, 0.25);
  color: white;
}

/* ================================
   Language Switcher
   ================================ */
.lang-switcher {
  display: flex;
  gap: 0.25rem;
  align-items: center;
  background: rgba(255, 255, 255, 0.1);
  padding: 0.25rem;
  border-radius: var(--radius-full);
}

.lang-switcher button {
  background: transparent;
  border: none;
  padding: 0.375rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
}

.lang-switcher button:hover {
  background: rgba(255, 255, 255, 0.15);
  color: white;
}

.lang-switcher button.active {
  background: rgba(255, 255, 255, 0.2);
  color: white;
}

.header.scrolled .lang-switcher {
  background: var(--gray-100);
}

.header.scrolled .lang-switcher button {
  color: var(--gray-600);
}

.header.scrolled .lang-switcher button:hover {
  background: var(--gray-200);
  color: var(--gray-900);
}

.header.scrolled .lang-switcher button.active {
  background: white;
  color: var(--primary-600);
  box-shadow: var(--shadow-sm);
}

@media (max-width: 767px) {
  .nav-actions {
    position: absolute;
    right: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
  }

  .btn-nav-login {
    display: none;
  }
}

/* ================================
   Hero Section
   ================================ */
.hero {
  background: linear-gradient(135deg, #0369a1 0%, #0ea5e9 50%, #38bdf8 100%);
  color: white;
  text-align: center;
  padding: var(--spacing-3xl) 0 calc(var(--spacing-3xl) + 100px);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 40%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero h1 {
  color: white;
  margin-bottom: var(--spacing-md);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero p {
  color: rgba(255, 255, 255, 0.95);
  font-size: 1.25rem;
  max-width: 800px;
  margin: 0 auto;
}

.hero-wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 120px;
  z-index: 1;
}

.hero-wave svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* Simple Hero (for inner pages) */
.hero-simple {
  padding: 8rem 0 6rem;
  margin-top: 0;
}

/* Animated Hero with Background Image */
.hero-animated {
  background: #0a1628;
  padding: 8rem 0 6rem;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-animated::before {
  display: none;
}

.hero-bg-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.hero-bg-image {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?q=80&w=2072&auto=format&fit=crop') center center / cover no-repeat;
  opacity: 0.6;
  z-index: 0;
  display: none; /* 隐藏背景图片，因为现在使用视频 */
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.4);
  z-index: 1;
}

.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  overflow: hidden;
}

/* Animated floating particles */
.hero-particles::before,
.hero-particles::after {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.3) 0%, transparent 70%);
  animation: float 8s ease-in-out infinite;
}

.hero-particles::before {
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.hero-particles::after {
  bottom: 20%;
  right: 10%;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
    opacity: 0.5;
  }
  50% {
    transform: translate(30px, -30px) scale(1.1);
    opacity: 0.8;
  }
}

/* Animated data lines */
.hero-animated .container::before {
  content: "";
  position: absolute;
  top: -100px;
  left: -50px;
  width: 200px;
  height: 200px;
  border: 1px solid rgba(14, 165, 233, 0.2);
  border-radius: 50%;
  animation: pulse-ring 4s ease-out infinite;
}

@keyframes pulse-ring {
  0% {
    transform: scale(0.8);
    opacity: 0;
  }
  50% {
    opacity: 0.3;
  }
  100% {
    transform: scale(1.5);
    opacity: 0;
  }
}

.hero-animated h1 {
  font-size: 3rem;
  font-weight: 700;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
  .hero-animated h1 {
    font-size: 3.5rem;
  }
}

.hero-animated p {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.8;
}

/* Hero CTA Button */
.btn-hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--primary-500);
  color: white;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 1rem;
  box-shadow: 0 4px 20px rgba(14, 165, 233, 0.4);
  transition: all var(--transition-normal);
  margin-top: var(--spacing-xl);
}

.btn-hero-cta:hover {
  background: var(--primary-600);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(14, 165, 233, 0.5);
  color: white;
}

.btn-hero-cta svg {
  animation: bounce-arrow 2s ease-in-out infinite;
}

@keyframes bounce-arrow {
  0%, 100% {
    transform: translateX(0);
  }
  50% {
    transform: translateX(5px);
  }
}

/* ================================
   Card Components
   ================================ */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

@media (min-width: 768px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.card {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
  border: 1px solid var(--gray-200);
}

.card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-xl);
}

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
}

.card-badge {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.card-badge.badge-green {
  background: var(--green-50);
  color: var(--green-500);
}

.card-badge.badge-blue {
  background: var(--blue-50);
  color: var(--blue-600);
}

.card-badge.badge-purple {
  background: var(--purple-50);
  color: var(--purple-600);
}

.card-badge.badge-orange {
  background: var(--orange-100);
  color: var(--orange-600);
}

.card-size {
  font-size: 0.875rem;
  color: var(--gray-600);
  font-weight: 600;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--gray-900);
}

.card-description {
  color: var(--gray-600);
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-md);
}

/* ================================
   Buttons
   ================================ */
.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
  border: none;
  cursor: pointer;
  text-align: center;
  font-size: 0.9375rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
  color: white;
  box-shadow: 0 4px 14px rgba(14, 165, 233, 0.4);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(14, 165, 233, 0.5);
  color: white;
}

.btn-secondary {
  background: white;
  color: var(--gray-700);
  border: 2px solid var(--gray-300);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--primary-500);
  color: var(--primary-600);
  transform: translateY(-2px);
}

.btn-full {
  width: 100%;
}

/* ================================
   CTA Section
   ================================ */
.cta-section {
  background: linear-gradient(180deg, #0369a1 0%, #0ea5e9 100%);
  color: white;
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-md);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  display: none;
}

.cta-section h2 {
  color: white;
  position: relative;
  z-index: 1;
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

@media (min-width: 768px) {
  .cta-section h2 {
    font-size: 3rem;
  }
}

.cta-section p {
  color: white;
  font-size: 1.125rem;
  margin-bottom: var(--spacing-xl);
  position: relative;
  z-index: 1;
}

.cta-section .cta-buttons {
  position: relative;
  z-index: 1;
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* CTA Button Styles */
.btn-cta-primary {
  background: white;
  color: var(--primary-600);
  border-radius: 12px;
  padding: 0.875rem 1.75rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.btn-cta-primary:hover {
  background: var(--gray-50);
  color: var(--primary-700);
  border-color: var(--primary-700);
  transform: translateY(-2px);
  text-decoration: none;
}

.btn-cta-primary svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  display: block;
  stroke: currentColor;
  color: var(--primary-600);
}

.btn-cta-primary:hover svg {
  color: var(--primary-700);
}

.btn-cta-secondary {
  background: var(--primary-700);
  color: white;
  border: 2px solid white;
  border-radius: var(--radius-lg);
  padding: 0.875rem 1.75rem;
  font-weight: 600;
  transition: all var(--transition-normal);
}

.btn-cta-secondary:hover {
  background: var(--primary-800);
  color: white;
  border-color: white;
  transform: translateY(-2px);
}

/* ================================
   Footer
   ================================ */
.footer {
  background: var(--gray-900);
  color: white;
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

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

.footer-column h3 {
  color: white;
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-xs);
}

.footer-links a {
  color: var(--gray-300);
  transition: color var(--transition-normal);
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid var(--gray-700);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: var(--gray-400);
  font-size: 0.875rem;
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  margin-top: var(--spacing-md);
}

.social-link {
  width: 40px;
  height: 40px;
  background: var(--gray-800);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
}

.social-link:hover {
  background: var(--primary-600);
  transform: translateY(-2px);
}

/* ================================
   Hero Buttons
   ================================ */
.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  margin-top: var(--spacing-xl);
  flex-wrap: wrap;
}

.hero .btn-secondary {
  background: white;
  color: var(--gray-700);
  border: 2px solid white;
  border-radius: var(--radius-full);
  padding: 0.875rem 1.75rem;
  box-shadow: none;
}

.hero .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.9);
  color: var(--gray-900);
  transform: translateY(-2px);
  border-color: white;
}

.btn-outline {
  background: var(--primary-500);
  color: white;
  border: 2px solid white;
  border-radius: var(--radius-full);
}

.btn-outline:hover {
  background: var(--primary-600);
  transform: translateY(-2px);
  color: white;
}

/* ================================
   Section Subtitle
   ================================ */
.section-subtitle {
  text-align: center;
  font-size: 1.125rem;
  color: var(--gray-600);
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
}

/* ================================
   Steps Component (How It Works)
   ================================ */
.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

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

.step-card {
  text-align: center;
  padding: var(--spacing-lg);
}

.step-number {
  width: 60px;
  height: 60px;
  background: var(--primary-500);
  color: white;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto var(--spacing-md);
  box-shadow: var(--shadow-lg);
}

.step-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--gray-900);
}

.step-description {
  color: var(--gray-600);
  font-size: 1rem;
  line-height: 1.6;
}

/* ================================
   Partners Section
   ================================ */
.partners-section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.partner-category {
  margin-bottom: var(--spacing-2xl);
}

.partner-category:last-child {
  margin-bottom: 0;
}

.partner-category h2 {
  margin-bottom: var(--spacing-xl);
  color: var(--primary-700);
  font-size: 1.5rem;
  font-weight: 700;
  position: relative;
  display: inline-block;
  width: 100%;
}

.partner-category h2::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-500), var(--primary-400));
  border-radius: 2px;
}

.partner-logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
  align-items: center;
  justify-items: center;
}

@media (min-width: 640px) {
  .partner-logo-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 768px) {
  .partner-logo-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1024px) {
  .partner-logo-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

.partner-logo-item {
  width: 100%;
  max-width: 150px;
  padding: var(--spacing-md);
  background: white;
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  border: 1px solid var(--gray-100);
}

.partner-logo-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 24px rgba(14, 165, 233, 0.15);
  border-color: var(--primary-200);
}

.partner-logo-item img {
  width: 100%;
  height: auto;
  object-fit: contain;
  max-height: 80px;
  filter: grayscale(0%);
  opacity: 1;
  transition: all var(--transition-normal);
}

.partner-logo-item:hover img {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.05);
}

/* ================================
   CTA Buttons
   ================================ */
.cta-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ================================
   Utility Classes
   ================================ */
.text-center {
  text-align: center;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.hidden {
  display: none;
}

@media (min-width: 768px) {
  .md-block {
    display: block;
  }
}

/* ================================
   Feature Block (Main Page)
   ================================ */
.feature-block {
  padding: var(--spacing-3xl) 0;
  border-bottom: none;
  position: relative;
}

.feature-block .container {
  position: relative;
}

.feature-block.alt-bg {
  background-color: var(--gray-50);
}

/* Feature Card Wrapper */
.feature-card-wrapper {
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(0, 0, 0, 0.05);
  padding: var(--spacing-xl);
  position: relative;
  overflow: hidden;
}

.feature-card-wrapper::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-500), var(--primary-600));
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.feature-content {
  max-width: 800px;
  margin: 0 auto var(--spacing-xl);
  text-align: center;
}

.feature-content p {
  font-size: 1.125rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin: 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

@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-item {
  background: linear-gradient(135deg, #e0f2fe 0%, #f0f9ff 100%);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: none;
  text-align: left;
  transition: all var(--transition-normal);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.feature-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(14, 165, 233, 0.15);
  background: linear-gradient(135deg, #d1edfa 0%, #e8f6fd 100%);
}

.feature-item-icon {
  width: 28px;
  height: 28px;
  min-width: 28px;
  background: transparent;
  color: var(--primary-600);
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
}

.feature-item-icon svg {
  display: none;
}

.feature-item-icon::before {
  content: "✓";
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-600);
}

.feature-item p {
  font-size: 0.9375rem;
  color: var(--primary-700);
  margin: 0;
  font-weight: 600;
  line-height: 1.5;
}

.feature-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Feature Block Title (outside card) */
.feature-block-title {
  text-align: center;
  font-size: 2.2rem;
  color: var(--primary-700);
  margin-bottom: var(--spacing-lg);
}

/* AI CDP Section Specific Styles (alt-bg) */
.feature-block.alt-bg .feature-block-title {
  color: var(--gold-700);
}

.feature-block.alt-bg .feature-content p {
  color: var(--gray-700);
}

/* AI CDP Section - 顶部边框线条改为金色 */
.feature-block.alt-bg .feature-card-wrapper::before {
  background: linear-gradient(90deg, var(--gold-600), var(--gold-700));
}

/* AI CDP Section - 功能框背景改为浅黄色/米色 */
.feature-block.alt-bg .feature-item {
  --tw-bg-opacity: 1;
  background: rgb(254 252 232 / var(--tw-bg-opacity, 1));
}


.feature-block.alt-bg .feature-item-icon::before {
  color: var(--gold-600);
}

.feature-block.alt-bg .feature-item p {
  color: var(--gray-700);
}

/* AI CDP Section Buttons */
.feature-block.alt-bg .btn-primary {
  background-image: linear-gradient(to right, rgb(234, 179, 8), rgb(202, 138, 4));
  color: white;
  box-shadow: 0 4px 14px rgba(212, 175, 55, 0.4);
  border: none;
}

.feature-block.alt-bg .btn-primary:hover {
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.5);
  color: white;
}

.feature-block.alt-bg .btn-secondary {
  background: white;
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
  box-shadow: var(--shadow-sm);
}

.feature-block.alt-bg .btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--gray-400);
  color: var(--gray-800);
}

/* Campaign Conversion Manager Section - Red Theme */
.feature-block-red .feature-block-title {
  color: #dc2626; /* 红色标题 */
}

.feature-block-red .feature-card-wrapper::before {
  background: #dc2626; /* 红色顶部边框 */
}

.feature-block-red .feature-content p {
  color: var(--gray-700); /* 深灰色介绍文字 */
}

.feature-block-red .feature-item {
  background: #fce7f3; /* 浅粉色背景 */
}

.feature-block-red .feature-item:hover {
  background: #fbcfe8; /* 浅粉色悬停背景 */
}

.feature-block-red .feature-item-icon::before {
  color: #dc2626; /* 红色勾选标记 */
}

.feature-block-red .feature-item p {
  color: #dc2626; /* 红色功能文字 */
}

.feature-block-red .btn-primary {
  background: #dc2626; /* 红色按钮背景 */
  color: white;
  box-shadow: 0 4px 14px rgba(220, 38, 38, 0.4);
  border: none;
}

.feature-block-red .btn-primary:hover {
  background: #b91c1c; /* 深红色悬停 */
  box-shadow: 0 6px 20px rgba(220, 38, 38, 0.5);
  color: white;
}

.feature-block-red .btn-secondary {
  background: white;
  color: #dc2626; /* 红色文字 */
  border: 1px solid var(--gray-300); /* 灰色边框 */
  box-shadow: var(--shadow-sm);
}

.feature-block-red .btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--gray-400);
  color: #b91c1c; /* 深红色悬停文字 */
}

@media (min-width: 768px) {
  .feature-block-title {
    font-size: 2.2rem;
  }
}

/* Wave Separator */
.wave-separator {
  position: relative;
  width: 100%;
  height: 80px;
  overflow: hidden;
}

.wave-separator svg {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.wave-separator.wave-white svg {
  fill: white;
}

.wave-separator.wave-gray svg {
  fill: var(--gray-50);
}

/* ================================
   Pricing Cards
   ================================ */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

@media (min-width: 768px) {
  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
    align-items: stretch;
  }
}

.pricing-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  border: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-normal);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
}

.pricing-card.popular {
  border: 2px solid #f59e0b;
  transform: scale(1);
}

.pricing-card.popular:hover {
  transform: translateY(-4px);
}

/* Pricing Icon */
.pricing-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-lg);
}

.pricing-icon-blue {
  background: #dbeafe;
  color: #2563eb;
}

.pricing-icon-yellow {
  background: #fef3c7;
  color: #f59e0b;
}

.pricing-icon-green {
  background: #d1fae5;
  color: #10b981;
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
  color: white;
  padding: 0.375rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.pricing-header {
  text-align: center;
  padding-bottom: var(--spacing-md);
  border-bottom: none;
  margin-bottom: var(--spacing-md);
}

.pricing-header h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--gray-900);
}

.pricing-header p {
  font-size: 0.9375rem;
  color: var(--gray-500);
  margin-bottom: var(--spacing-lg);
  line-height: 1.5;
}

.pricing-price-wrapper {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.25rem;
}

.pricing-price {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1;
}

.pricing-period {
  font-size: 1rem;
  color: var(--gray-400);
  font-weight: 400;
}

.pricing-features {
  flex: 1;
  margin-bottom: var(--spacing-lg);
}

.pricing-features ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.5rem 0;
  font-size: 0.9375rem;
  color: var(--gray-700);
}

.pricing-features li::before {
  content: "✓";
  color: #10b981;
  font-weight: 700;
  flex-shrink: 0;
  font-size: 1rem;
}

.pricing-card .btn {
  width: 100%;
}

/* Pricing Button Style */
.btn-pricing {
  background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
  color: white;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  box-shadow: 0 4px 14px rgba(14, 165, 233, 0.35);
  transition: all var(--transition-normal);
}

.btn-pricing:hover {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(14, 165, 233, 0.45);
  color: white;
}

.btn-pricing::after {
  content: "→";
  font-size: 1.125rem;
}

/* ================================
   FAQ Section
   ================================ */
.faq-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-3xl) 0;
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

@media (min-width: 768px) {
  .faq-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.faq-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.faq-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
}

.faq-question {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-md);
  line-height: 1.4;
}

.faq-answer {
  padding: 0;
}

.faq-answer p {
  color: var(--gray-600);
  line-height: 1.7;
  margin: 0;
  font-size: 0.9375rem;
}

/* ================================
   Resource Cards (Partner Portal)
   ================================ */
.resource-section {
  margin-bottom: var(--spacing-3xl);
}

.resource-section h2 {
  margin-bottom: var(--spacing-xl);
  color: var(--gray-900);
  font-size: 1.75rem;
  font-weight: 700;
  position: relative;
  display: inline-block;
  padding-bottom: 0.5rem;
  text-align: center;
  width: 100%;
}

.resource-section h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: #3b82f6;
  border-radius: 2px;
}

.resource-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

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

.resource-card {
  background: white;
  border-radius: 12px;
  border: none;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.resource-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
}

.resource-card-thumbnail {
  width: 100%;
  height: 180px;
  background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 100%);
  position: relative;
  overflow: hidden;
}

.resource-card-thumbnail-icon {
  position: absolute;
  top: 12px;
  left: 12px;
  width: 32px;
  height: 32px;
  background: rgba(255, 255, 255, 0.9);
  border: 2px solid #10b981;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #10b981;
  z-index: 2;
}

.resource-card-thumbnail-icon svg {
  width: 20px;
  height: 20px;
}

.resource-card-thumbnail-check {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 24px;
  height: 24px;
  background: #10b981;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  z-index: 2;
}

.resource-card-thumbnail-check svg {
  width: 14px;
  height: 14px;
}

.resource-card-content {
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.resource-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-xs);
}

.resource-card p {
  font-size: 0.875rem;
  color: var(--gray-600);
  margin-bottom: var(--spacing-sm);
  line-height: 1.5;
}

.resource-card-size {
  font-size: 0.8125rem;
  color: var(--gray-500);
  margin-bottom: var(--spacing-sm);
}

.resource-card-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
  margin-bottom: var(--spacing-md);
  width: fit-content;
}

.resource-card-tag-image {
  background: #d1fae5;
  color: #065f46;
}

.resource-card-tag-document {
  background: #dbeafe;
  color: #1e40af;
}

.btn-resource-download {
  background: #2563eb;
  color: white;
  border: none;
  border-radius: 8px;
  padding: 0.625rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: auto;
  transition: all var(--transition-normal);
}

.btn-resource-download:hover {
  background: #1d4ed8;
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.btn-resource-download svg {
  width: 16px;
  height: 16px;
}

/* ================================
   Role Cards (Welcome Page)
   ================================ */
.welcome-hero {
  text-align: center;
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(135deg, var(--gray-50) 0%, white 100%);
}

.welcome-hero h1 {
  margin-bottom: var(--spacing-sm);
}

.welcome-hero p {
  font-size: 1.25rem;
  color: var(--gray-600);
}

.role-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  max-width: 1000px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md);
}

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

.role-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--gray-200);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.role-card:hover {
  border-color: var(--primary-500);
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.role-card-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
  color: white;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-lg);
  font-size: 2rem;
}

.role-card h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
}

.role-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  text-align: left;
}

.role-card li {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) 0;
  font-size: 0.9375rem;
  color: var(--gray-600);
}

.role-card li::before {
  content: "•";
  color: var(--primary-500);
  font-weight: 700;
}

/* ================================
   Portal Hero Section
   ================================ */
.hero-portal {
  background: linear-gradient(to right, rgb(2, 132, 199), rgb(7, 89, 133));
  padding: var(--spacing-3xl) 0;
}

.hero-portal::before {
  display: none;
}

.hero-portal-icon {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-md);
  position: relative;
}

.hero-portal-icon::before {
  content: "";
  position: absolute;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.2);
  z-index: 0;
}

.hero-portal-icon svg {
  width: 48px;
  height: 48px;
  color: white;
  stroke: white;
  position: relative;
  z-index: 1;
}

.hero-portal h1 {
  color: white;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.hero-portal p {
  color: white;
  font-size: 1.125rem;
  max-width: 800px;
  margin: 0 auto var(--spacing-xl);
}

/* ================================
   Portal Welcome Banner
   ================================ */
.portal-welcome {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  padding: var(--spacing-xl);
  border-radius: 8px;
  margin: var(--spacing-xl) auto 0;
  text-align: center;
  width: fit-content;
}

.portal-welcome h2 {
  color: white;
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
  font-size: 1.5rem;
}

.portal-welcome p {
  color: white;
  font-size: 1.125rem;
  max-width: 700px;
  margin: 0 auto;
}

/* ================================
   Additional Resources Cards
   ================================ */
.additional-resources {
  background: var(--gray-50);
  padding: var(--spacing-3xl) 0;
  margin-top: var(--spacing-xl);
}

.additional-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  border: 1px solid var(--gray-200);
  height: 100%;
  transition: all var(--transition-normal);
}

.additional-card:hover {
  border-color: var(--primary-500);
  box-shadow: var(--shadow-md);
}

.additional-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
  color: var(--gray-900);
}

.additional-card p {
  color: var(--gray-600);
  font-size: 0.9375rem;
  margin: 0;
}