/*
Theme Name: 韶关水利规划设计院
Theme URI: https://sgslgh.com
Description: 韶关市水利规划设计院有限公司官网主题
Version: 1.1
Author: SOLO Design
*/

/* ============================================
   Brand CSS — 韶关市水利规划设计院
   Modern Tech Style
   ============================================ */

:root {
  /* === Brand Color System === */
  --color-primary: #0a7cba;
  --color-primary-light: #1299e8;
  --color-primary-lighter: #5abcd8;
  --color-primary-lightest: #c2e3f5;
  --color-primary-dark: #06649a;
  --color-primary-darker: #044d78;
  --color-primary-darkest: #033555;

  /* Tech accent — cyan */
  --color-tech-accent: #00d4ff;
  --color-tech-accent-dim: rgba(0, 212, 255, 0.15);

  /* Neural grid subtle accent */
  --color-grid-accent: rgba(10, 124, 186, 0.06);

  /* === Neutral Scale === */
  --color-bg-primary: #f8fbfe;
  --color-bg-secondary: #ffffff;
  --color-bg-tertiary: #edf3f8;
  --color-bg-inverse: #0a1628;
  --color-bg-inverse-secondary: #111d32;

  --color-text-primary: #1a2a3a;
  --color-text-secondary: #4a6178;
  --color-text-tertiary: #7a9ab5;
  --color-text-inverse: #f0f6fc;
  --color-text-inverse-secondary: #a8c4db;

  --color-border-primary: rgba(10, 124, 186, 0.12);
  --color-border-secondary: rgba(10, 124, 186, 0.06);
  --color-border-strong: rgba(10, 124, 186, 0.25);

  /* === State Colors (semantic only) === */
  --state-success: #10b981;
  --state-warning: #f59e0b;
  --state-error: #ef4444;
  --state-info: var(--color-primary);

  /* === Typography === */
  --font-family-heading: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --font-family-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --font-family-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Type Scale */
  --font-size-display: 3.5rem;
  --font-size-h1: 2.5rem;
  --font-size-h2: 2rem;
  --font-size-h3: 1.5rem;
  --font-size-h4: 1.25rem;
  --font-size-body: 1rem;
  --font-size-body-sm: 0.875rem;
  --font-size-caption: 0.75rem;

  /* Line Heights */
  --line-height-display: 1.15;
  --line-height-heading: 1.25;
  --line-height-body: 1.65;
  --line-height-compact: 1.4;

  /* Font Weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Letter Spacing */
  --letter-spacing-display: -0.02em;
  --letter-spacing-heading: -0.01em;
  --letter-spacing-body: 0;

  /* === Radius Scale === */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* === Spacing Scale (base 4px) === */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* === Shadow & Depth === */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.05);

  /* === Glass Effect === */
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-bg-dark: rgba(10, 22, 40, 0.75);
  --glass-blur: blur(16px);
  --glass-border: 1px solid rgba(255, 255, 255, 0.18);

  /* === Transition === */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease-out;
}

/* ============================================
   Base Reset & Defaults
   ============================================ */

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

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

body {
  font-family: var(--font-family-body);
  font-size: var(--font-size-body);
  line-height: var(--line-height-body);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-heading);
  letter-spacing: var(--letter-spacing-heading);
  color: var(--color-text-primary);
}

h1 {
  font-size: var(--font-size-h1);
  letter-spacing: var(--letter-spacing-display);
}

h2 {
  font-size: var(--font-size-h2);
}

h3 {
  font-size: var(--font-size-h3);
}

h4 {
  font-size: var(--font-size-h4);
}

p {
  margin-bottom: var(--space-4);
  color: var(--color-text-secondary);
}

::selection {
  background-color: var(--color-primary-lightest);
  color: var(--color-primary-darker);
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

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

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-title {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.section-subtitle {
  font-size: var(--font-size-body);
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

/* ============================================
   Navigation
   ============================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: var(--glass-border);
  transition: background var(--transition-base);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-sm);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-family-heading);
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  text-decoration: none;
}

.site-logo img {
  height: 40px;
  width: auto;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-menu li a {
  display: block;
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-body-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-menu li a:hover,
.nav-menu li a.current-menu-item {
  color: var(--color-primary);
  background: var(--color-tech-accent-dim);
}

.nav-menu li.current-menu-item a {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-primary);
  padding: var(--space-2);
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    flex-direction: column;
    padding: var(--space-4);
    border-bottom: var(--glass-border);
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu li a {
    width: 100%;
    padding: var(--space-3) var(--space-4);
  }
}

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

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-bg-inverse) 0%, var(--color-primary-darker) 50%, var(--color-primary-dark) 100%);
  color: var(--color-text-inverse);
  padding: var(--space-24) var(--space-6);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0, 212, 255, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(10, 124, 186, 0.12) 0%, transparent 50%);
  pointer-events: none;
}

/* Neural grid background pattern */
.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(var(--color-grid-accent) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid-accent) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--glass-bg-dark);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-body-sm);
  color: var(--color-tech-accent);
  margin-bottom: var(--space-6);
}

.hero-title {
  font-size: var(--font-size-display);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-display);
  letter-spacing: var(--letter-spacing-display);
  color: var(--color-text-inverse);
  margin-bottom: var(--space-6);
}

.hero-title .highlight {
  background: linear-gradient(135deg, var(--color-tech-accent), var(--color-primary-lighter));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: var(--font-size-h4);
  color: var(--color-text-inverse-secondary);
  line-height: var(--line-height-body);
  margin-bottom: var(--space-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family-body);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-decoration: none;
  line-height: var(--line-height-compact);
}

.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(10, 124, 186, 0.35);
}

.btn-primary:hover {
  background: var(--color-primary-light);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(10, 124, 186, 0.4);
}

.btn-secondary {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--color-text-inverse);
  border: var(--glass-border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.88);
  color: var(--color-text-inverse);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-border-strong);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

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

.card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-xs);
}

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

.card-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card:hover .card-image img {
  transform: scale(1.05);
}

.card-body {
  padding: var(--space-6);
}

.card-category {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  background: var(--color-primary-lightest);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-3);
}

.card-title {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
  line-height: var(--line-height-heading);
}

.card-title a {
  color: var(--color-text-primary);
  text-decoration: none;
}

.card-title a:hover {
  color: var(--color-primary);
}

.card-excerpt {
  font-size: var(--font-size-body-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-body);
  margin-bottom: var(--space-4);
}

.card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--font-size-caption);
  color: var(--color-text-tertiary);
}

.card-meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* Glass card variant */
.card-glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
}

/* ============================================
   Card Grid
   ============================================ */

.card-grid {
  display: grid;
  gap: var(--space-6);
}

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

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

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

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

@media (max-width: 768px) {
  .card-grid-2,
  .card-grid-3,
  .card-grid-4 {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   News List / Archive
   ============================================ */

.news-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.news-item {
  display: flex;
  gap: var(--space-6);
  padding: var(--space-6);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.news-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-strong);
}

.news-item-image {
  flex-shrink: 0;
  width: 280px;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.news-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-item-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.news-item-content .card-title {
  font-size: var(--font-size-h3);
}

@media (max-width: 768px) {
  .news-item {
    flex-direction: column;
  }

  .news-item-image {
    width: 100%;
  }
}

/* ============================================
   Section Backgrounds
   ============================================ */

.section-dark {
  background: var(--color-bg-inverse);
  color: var(--color-text-inverse);
}

.section-dark .section-title {
  color: var(--color-text-inverse);
}

.section-dark .section-subtitle {
  color: var(--color-text-inverse-secondary);
}

.section-dark p {
  color: var(--color-text-inverse-secondary);
}

.section-gradient {
  background: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-tertiary) 100%);
}

/* ============================================
   Feature / Service Section
   ============================================ */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

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

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

.feature-card {
  text-align: center;
  padding: var(--space-8);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

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

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: var(--color-tech-accent-dim);
  border-radius: var(--radius-lg);
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}

.feature-card h3 {
  font-size: var(--font-size-h4);
  margin-bottom: var(--space-3);
}

.feature-card p {
  font-size: var(--font-size-body-sm);
  color: var(--color-text-secondary);
}

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

.site-footer {
  background: var(--color-bg-inverse);
  color: var(--color-text-inverse-secondary);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-brand {
  max-width: 320px;
}

.footer-brand .site-logo {
  color: var(--color-text-inverse);
  margin-bottom: var(--space-4);
}

.footer-brand p {
  color: var(--color-text-inverse-secondary);
  font-size: var(--font-size-body-sm);
  line-height: var(--line-height-body);
}

.footer-column h4 {
  color: var(--color-text-inverse);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-4);
}

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

.footer-links a {
  color: var(--color-text-inverse-secondary);
  font-size: var(--font-size-body-sm);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-tech-accent);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: var(--font-size-caption);
  color: var(--color-text-tertiary);
}

@media (max-width: 640px) {
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-3);
    text-align: center;
  }
}

/* ============================================
   Breadcrumb
   ============================================ */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) 0;
  font-size: var(--font-size-body-sm);
  color: var(--color-text-tertiary);
}

.breadcrumb a {
  color: var(--color-text-tertiary);
}

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

.breadcrumb .separator {
  color: var(--color-text-tertiary);
}

.breadcrumb .current {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
}

/* ============================================
   Pagination
   ============================================ */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-12);
}

.pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--space-3);
  font-size: var(--font-size-body-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.pagination .page-numbers:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.pagination .page-numbers.current {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.pagination .page-numbers.prev,
.pagination .page-numbers.next {
  padding: 0 var(--space-4);
}

/* ============================================
   Single Post / Page
   ============================================ */

.single-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-12) var(--space-6);
}

.single-header {
  margin-bottom: var(--space-8);
}

.single-title {
  font-size: var(--font-size-h2);
  margin-bottom: var(--space-4);
}

.single-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--font-size-body-sm);
  color: var(--color-text-tertiary);
}

.single-content .wp-block-image,
.single-content figure {
  margin: var(--space-8) 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.single-content .wp-block-image img,
.single-content figure img {
  width: 100%;
  border-radius: var(--radius-lg);
}

.single-content p {
  font-size: var(--font-size-body);
  line-height: var(--line-height-body);
}

/* ============================================
   Sidebar
   ============================================ */

.sidebar-widget {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

.sidebar-widget h4 {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-primary-lightest);
}

/* ============================================
   Page Layout with Sidebar
   ============================================ */

.content-with-sidebar {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-8);
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-12) var(--space-6);
}

@media (max-width: 1024px) {
  .content-with-sidebar {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Scrollbar
   ============================================ */

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-tertiary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary-lighter);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* ============================================
   WordPress Alignment Classes
   ============================================ */

.aligncenter {
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.alignleft {
  float: left;
  margin-right: var(--space-4);
  margin-bottom: var(--space-4);
}

.alignright {
  float: right;
  margin-left: var(--space-4);
  margin-bottom: var(--space-4);
}

.wp-caption {
  max-width: 100%;
}

.wp-caption-text {
  font-size: var(--font-size-caption);
  color: var(--color-text-tertiary);
  text-align: center;
  margin-top: var(--space-2);
}

/* ============================================
   Screen Reader Text
   ============================================ */

.screen-reader-text {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute !important;
  width: 1px;
  word-wrap: normal !important;
}

/* ============================================
   Skip Link
   ============================================ */

.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--color-primary);
  color: #ffffff;
  padding: var(--space-3) var(--space-4);
  z-index: 9999;
  font-weight: var(--font-weight-medium);
}

.skip-link:focus {
  top: 0;
}

/* ============================================
   Tailwind Utility Fallback — 纯 CSS 替代
   主题不依赖任何外部 CSS 框架
   ============================================ */

/* --- Display --- */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.block { display: block; }
.inline-block { display: inline-block; }
.hidden { display: none; }
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.static { position: static; }
.sticky { position: sticky; }

/* --- Flexbox --- */
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.items-stretch { align-items: stretch; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-5 { gap: 1.25rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.gap-10 { gap: 2.5rem; }
.gap-12 { gap: 3rem; }
.gap-14 { gap: 3.5rem; }
.gap-16 { gap: 4rem; }
.flex-shrink-0 { flex-shrink: 0; }
.flex-1 { flex: 1 1 0%; }
.order-1 { order: 1; }
.order-2 { order: 2; }

/* --- Grid --- */
.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid-cols-5 { grid-template-columns: repeat(5, 1fr); }
.col-span-2 { grid-column: span 2 / span 2; }
.col-span-3 { grid-column: span 3 / span 3; }

/* --- Spacing: padding --- */
.p-0 { padding: 0; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-5 { padding: 1.25rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.p-10 { padding: 2.5rem; }
.px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-2\.5 { padding-left: 0.625rem; padding-right: 0.625rem; }
.px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-5 { padding-left: 1.25rem; padding-right: 1.25rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-7 { padding-left: 1.75rem; padding-right: 1.75rem; }
.px-8 { padding-left: 2rem; padding-right: 2rem; }
.py-0\.5 { padding-top: 0.125rem; padding-bottom: 0.125rem; }
.py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-2\.5 { padding-top: 0.625rem; padding-bottom: 0.625rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-10 { padding-top: 2.5rem; padding-bottom: 2.5rem; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }
.py-24 { padding-top: 6rem; padding-bottom: 6rem; }
.py-32 { padding-top: 8rem; padding-bottom: 8rem; }
.pt-0 { padding-top: 0; }
.pt-\[68px\] { padding-top: 68px; }
.pb-0 { padding-bottom: 0; }

/* --- Spacing: margin --- */
.m-0 { margin: 0; }
.m-auto { margin: auto; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-5 { margin-top: 1.25rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mt-10 { margin-top: 2.5rem; }
.mt-12 { margin-top: 3rem; }
.mt-14 { margin-top: 3.5rem; }
.mt-16 { margin-top: 4rem; }
.mt-20 { margin-top: 5rem; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-5 { margin-bottom: 1.25rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-10 { margin-bottom: 2.5rem; }
.mb-12 { margin-bottom: 3rem; }
.mb-\[5px\] { margin-bottom: 5px; }
.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }
.-mb-px { margin-bottom: -1px; }

/* --- Spacing: space-y utilities --- */
.space-y-4 > * + * { margin-top: 1rem; }
.space-y-8 > * + * { margin-top: 2rem; }
.space-y-16 > * + * { margin-top: 4rem; }

/* --- Width / Height / Sizing --- */
.w-full { width: 100%; }
.w-3\/4 { width: 75%; }
.w-2\/3 { width: 66.666%; }
.w-5 { width: 1.25rem; }
.w-10 { width: 2.5rem; }
.w-16 { width: 4rem; }
.h-full { height: 100%; }
.h-screen { height: 100vh; }
.min-h-screen { min-height: 100vh; }
.h-4 { height: 1rem; }
.h-5 { height: 1.25rem; }
.h-\[2px\] { height: 2px; }
.h-\[3px\] { height: 3px; }
.h-\[280px\] { height: 280px; }
.h-\[300px\] { height: 300px; }
.h-\[320px\] { height: 320px; }
.h-\[400px\] { height: 400px; }
.h-\[500px\] { height: 500px; }
.max-w-\[1200px\] { max-width: 1200px; }
.max-w-\[680px\] { max-width: 680px; }
.max-w-\[560px\] { max-width: 560px; }
.max-w-\[520px\] { max-width: 520px; }
.max-w-\[480px\] { max-width: 480px; }
.max-w-\[640px\] { max-width: 640px; }
.max-w-\[800px\] { max-width: 800px; }
.max-w-screen-xl { max-width: 1280px; }
.aspect-\[16\/9\] { aspect-ratio: 16 / 9; }
.min-h-\[300px\] { min-height: 300px; }

/* --- Overflow --- */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

/* --- Border & Radius --- */
.rounded { border-radius: 0.25rem; }
.rounded-full { border-radius: 9999px; }
.rounded-md { border-radius: 0.375rem; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-xl { border-radius: 0.75rem; }
.border { border-width: 1px; }
.border-0 { border-width: 0; }
.border-t { border-top-width: 1px; }
.border-b-2 { border-bottom-width: 2px; }
.no-underline { text-decoration: none; }

/* --- Typography --- */
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-4xl { font-size: 2.25rem; }
.text-5xl { font-size: 3rem; }
.text-6xl { font-size: 3.75rem; }
.text-\[11px\] { font-size: 11px; }
.text-\[12px\] { font-size: 12px; }
.text-\[13px\] { font-size: 13px; }
.text-\[14px\] { font-size: 14px; }
.text-\[15px\] { font-size: 15px; }
.text-\[16px\] { font-size: 16px; }
.text-\[18px\] { font-size: 18px; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-sans { font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif; }
.font-mono { font-family: 'JetBrains Mono', 'Fira Code', monospace; }
.tracking-tight { letter-spacing: -0.025em; }
.tracking-wider { letter-spacing: 0.05em; }
.leading-relaxed { line-height: 1.625; }
.leading-none { line-height: 1; }
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-white { color: #ffffff; }
.text-black { color: #000000; }
.text-current { color: currentColor; }
.whitespace-nowrap { white-space: nowrap; }
.whitespace-pre { white-space: pre; }
.text-wrap { text-wrap: wrap; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.line-clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.uppercase { text-transform: uppercase; }
.antialiased { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
.list-none { list-style: none; }
.break-words { overflow-wrap: break-word; word-break: break-all; }

/* --- Cursor & Pointer --- */
.cursor-pointer { cursor: pointer; }
.pointer-events-none { pointer-events: none; }

/* --- Visual --- */
.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-70 { opacity: 0.7; }
.opacity-75 { opacity: 0.75; }
.z-0 { z-index: 0; }
.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-50 { z-index: 50; }
.inset-0 { top: 0; right: 0; bottom: 0; left: 0; }
.shadow-sm { box-shadow: 0 1px 2px rgba(0,0,0,0.05); }
.shadow-md { box-shadow: 0 4px 6px rgba(0,0,0,0.07); }
.shadow-lg { box-shadow: 0 10px 15px rgba(0,0,0,0.1); }
.shadow-xl { box-shadow: 0 20px 25px rgba(0,0,0,0.1); }

/* --- Transitions --- */
.transition-all { transition-property: all; transition-timing-function: ease; transition-duration: 150ms; }
.transition-colors { transition-property: color, background-color, border-color; transition-timing-function: ease; transition-duration: 150ms; }
.transition-transform { transition-property: transform; transition-timing-function: ease; transition-duration: 150ms; }
.duration-150 { transition-duration: 150ms; }
.duration-200 { transition-duration: 200ms; }
.duration-250 { transition-duration: 250ms; }
.duration-300 { transition-duration: 300ms; }
.ease-out { transition-timing-function: ease-out; }

/* --- Scrollbar --- */
.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }

/* --- Object fit --- */
.object-cover { object-fit: cover; }
.object-contain { object-fit: contain; }

/* --- z-index --- */
.-z-10 { z-index: -10; }

/* ============================================
   Responsive Breakpoints
   ============================================ */

/* sm: 640px */
@media (min-width: 640px) {
  .sm\:flex { display: flex; }
  .sm\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .sm\:px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
  .sm\:hidden { display: none; }
  .sm\:inline-flex { display: inline-flex; }
  .sm\:text-lg { font-size: 1.125rem; }
  .sm\:text-xl { font-size: 1.25rem; }
  .sm\:grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
}

/* md: 768px */
@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); }
  .md\:grid-cols-5 { grid-template-columns: repeat(5, 1fr); }
  .md\:col-span-2 { grid-column: span 2 / span 2; }
  .md\:col-span-3 { grid-column: span 3 / span 3; }
  .md\:order-1 { order: 1; }
  .md\:order-2 { order: 2; }
  .md\:hidden { display: none; }
  .md\:flex { display: flex; }
  .md\:inline-flex { display: inline-flex; }
  .md\:h-\[320px\] { height: 320px; }
  .md\:py-\[80px\] { padding-top: 80px; padding-bottom: 80px; }
  .md\:py-32 { padding-top: 8rem; padding-bottom: 8rem; }
  .md\:text-3xl { font-size: 1.875rem; }
  .md\:text-5xl { font-size: 3rem; }
  .md\:text-6xl { font-size: 3.75rem; }
  .md\:text-lg { font-size: 1.125rem; }
  .md\:text-xl { font-size: 1.25rem; }
}

/* lg: 1024px */
@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-5 { grid-template-columns: repeat(5, 1fr); }
  .lg\:col-span-2 { grid-column: span 2 / span 2; }
  .lg\:col-span-3 { grid-column: span 3 / span 3; }
  .lg\:hidden { display: none; }
  .lg\:flex { display: flex; }
  .lg\:inline-flex { display: inline-flex; }
  .lg\:block { display: block; }
  .lg\:px-8 { padding-left: 2rem; padding-right: 2rem; }
  .lg\:text-3xl { font-size: 1.875rem; }
}

/* xl: 1280px */
@media (min-width: 1280px) {
  .xl\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
}

/* ============================================
   Page-specific animations
   ============================================ */

/* Hero grid bg pulse animation */
.hero-grid-bg {
  animation: grid-pulse 8s ease-in-out infinite;
}

@keyframes grid-pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 0.8; }
}

/* [data-icon] mask for inline SVG icons */
[data-icon] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
  background-color: currentColor;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .hero-grid-bg { animation-duration: 0.01ms; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

/* ============================================
   Additional Utility Classes (Phase 2 补充)
   ============================================ */

/* --- Position --- */
.top-0 { top: 0; }
.left-0 { left: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }

/* --- Shrink alias --- */
.shrink-0 { flex-shrink: 0; }
.shrink { flex-shrink: 1; }

/* --- Additional spacing --- */
.space-y-1 > * + * { margin-top: 0.25rem; }
.space-y-2 > * + * { margin-top: 0.5rem; }
.space-y-3 > * + * { margin-top: 0.75rem; }
.pt-1 { padding-top: 0.25rem; }
.pt-6 { padding-top: 1.5rem; }
.px-1 { padding-left: 0.25rem; padding-right: 0.25rem; }
.py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-6 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-8 { padding-top: 2rem; padding-bottom: 2rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }

/* --- Additional sizing --- */
.w-2 { width: 0.5rem; }
.w-3 { width: 0.75rem; }
.w-3\.5 { width: 0.875rem; }
.w-4 { width: 1rem; }
.w-11 { width: 2.75rem; }
.w-20 { width: 5rem; }
.w-96 { width: 24rem; }
.h-2 { height: 0.5rem; }
.h-3 { height: 0.75rem; }
.h-3\.5 { height: 0.875rem; }
.h-10 { height: 2.5rem; }
.h-11 { height: 2.75rem; }
.h-20 { height: 5rem; }
.h-96 { height: 24rem; }
.h-\[600px\] { height: 600px; }
.max-w-\[600px\] { max-width: 600px; }
.max-w-xs { max-width: 20rem; }
.max-w-3xl { max-width: 48rem; }
.max-w-\[720px\] { max-width: 720px; }

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

@media (min-width: 768px) {
  .md\:px-8 { padding-left: 2rem; padding-right: 2rem; }
  .md\:gap-8 { gap: 2rem; }
  .md\:h-\[600px\] { height: 600px; }
  .md\:p-14 { padding: 3.5rem; }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
  .lg\:gap-16 { gap: 4rem; }
}

/* --- Typography extras --- */
.leading-snug { line-height: 1.375; }
.not-italic { font-style: normal; }
.underline { text-decoration: underline; }

/* --- Form utilities --- */
.resize-y { resize: vertical; }
.outline-none { outline: 2px solid transparent; outline-offset: 2px; }

/* --- Transition extras --- */
.transition-shadow { transition-property: box-shadow; transition-timing-function: ease; transition-duration: 150ms; }

/* --- Transform utilities --- */
.-translate-x-1\/2 { transform: translateX(-50%); }
.-translate-y-1\/2 { transform: translateY(-50%); }
.-translate-x-1 { transform: translateX(-0.25rem); }
.-translate-y-1 { transform: translateY(-0.25rem); }
.translate-x-1 { transform: translateX(0.25rem); }
.translate-y-1 { transform: translateY(0.25rem); }

/* --- Group hover --- */
.group { }
.group:hover .group-hover\:scale-105 { transform: scale(1.05); }
.group:hover .group-hover\:translate-x-1 { transform: translateX(0.25rem); }
.group:hover .group-hover\:opacity-75 { opacity: 0.75; }

/* --- Overflow-x --- */
.overflow-x-auto { overflow-x: auto; }