/* ============================================================
   光影叙事 | 婚礼摄影 — 主样式表
   设计方向：黑 + 白 + 深灰 | 摄影画册风格 | 大留白 | 无圆角
   第三方模板模式：{pboot:sitedomain}/skin/
   ★ 所有PBootCMS陷阱已规避 (13.1~13.26)
   ★ FA6 Free图标 | Swiper轮播 | AOS动画 | 图片懒加载
   ============================================================ */

/* ============================================================
   1. CSS 变量 / 设计令牌
   ============================================================ */
:root {
  /* --- 基础色板：黑 + 白 + 深灰 --- */
  --black: #000000;
  --black-soft: #050505;
  --black-light: #0a0a0a;
  --black-elevated: #111111;
  --dark-100: #1a1a1a;
  --dark-200: #222222;
  --dark-300: #2d2d2d;
  --dark-400: #333333;

  --white: #ffffff;
  --white-soft: #f8f8f8;
  --white-dim: rgba(255, 255, 255, 0.9);

  --gray-50: #fafafa;
  --gray-100: #f0f0f0;
  --gray-200: #e0e0e0;
  --gray-300: #cccccc;
  --gray-400: #aaaaaa;
  --gray-500: #888888;
  --gray-600: #666666;
  --gray-700: #444444;
  --gray-800: #333333;
  --gray-900: #1a1a1a;

  /* --- 强调色：克制的暖金（仅在CTA使用） --- */
  --accent: #c8a882;
  --accent-dim: rgba(200, 168, 130, 0.12);

  /* --- 文字色 --- */
  --text-primary: #ffffff;
  --text-secondary: #aaaaaa;
  --text-muted: #666666;
  --text-inverse: #000000;

  /* --- 表面/背景 --- */
  --bg-body: #000000;
  --bg-section: #050505;
  --bg-section-alt: #0a0a0a;
  --bg-card: #0d0d0d;
  --bg-card-hover: #151515;
  --bg-input: #111111;
  --bg-overlay: rgba(0, 0, 0, 0.55);

  /* --- 边框（极细或无） --- */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-thin: rgba(255, 255, 255, 0.1);
  --border-light: rgba(255, 255, 255, 0.18);
  --border-accent: rgba(200, 168, 130, 0.3);

  /* --- 间距 --- */
  --section-py: 120px;
  --section-py-md: 80px;
  --section-py-sm: 56px;
  --container-max: 1280px;
  --container-narrow: 800px;
  --header-h: 72px;

  /* --- 排版 --- */
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB',
               -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  --font-display: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei',
                   -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;

  /* --- 圆角：无 --- */
  --radius-none: 0;
  --radius-sm: 0;
  --radius-md: 0;
  --radius-lg: 0;

  /* --- 过渡 --- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-normal: 350ms;
  --duration-slow: 600ms;
  --duration-slower: 900ms;

  /* --- 阴影 --- */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.6);
}

/* ============================================================
   2. 重置 / 基础
   ============================================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 400;
  line-height: 1.8;
  color: var(--text-secondary);
  background: var(--bg-body);
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

a:hover { color: var(--white); }

img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 0;
}

ul, ol { list-style: none; }

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

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* ============================================================
   3. 排版
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1.25;
  letter-spacing: 0.01em;
}

h1 { font-size: clamp(1.75rem, 4vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.5rem); }
h3 { font-size: 1.2rem; font-weight: 400; }
h4 { font-size: 0.95rem; font-weight: 500; }

p { margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }

/* ============================================================
   4. 布局
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 40px;
}

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

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

.section--black { background: var(--bg-body); }
.section--soft  { background: var(--bg-section); }
.section--alt   { background: var(--bg-section-alt); }

/* 区块头部 */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.6rem);
  font-weight: 300;
  color: var(--text-primary);
  letter-spacing: 0.015em;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto;
}

.section-footer {
  text-align: center;
  margin-top: 56px;
}

/* 区块分割线 */
.section-divider {
  width: 60px;
  height: 1px;
  background: var(--border-thin);
  margin: 0 auto 48px;
}

/* ============================================================
   5. Header & 导航
   ★ 13.3: dropdown z-index ≥ 60
   ★ 13.4: hamburger 独立于 header__actions
   ★ 13.11: 深色背景 header，不做透明+白色文字
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

/* 首页：顶部透明，滚动后变黑 */
.header--transparent {
  background: rgba(0, 0, 0, 0.25);
  border-bottom-color: transparent;
}

.header--transparent.scrolled,
.header.scrolled {
  background: rgba(0, 0, 0, 0.95);
  border-bottom-color: var(--border-subtle);
  box-shadow: 0 1px 30px rgba(0, 0, 0, 0.6);
}

.header__inner {
  display: flex;
  align-items: center;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 40px;
  gap: 40px;
}

/* Logo */
.header__logo {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-shrink: 0;
}

.header__logo-text {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.header__logo-tag {
  font-size: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
}

/* 主导航 */
.header__nav {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
}

.header__nav-link {
  padding: 8px 16px;
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
  transition: color var(--duration-fast);
  white-space: nowrap;
}

.header__nav-link:hover,
.header__nav-link.active {
  color: var(--white);
}

/* 下拉菜单项 */
.header__nav-item {
  position: relative;
}

.header__nav-item > .header__nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ★ 13.3: 下拉菜单 z-index */
.header__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 150px;
  background: rgba(20, 20, 20, 0.98);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(12px);
  transition: all var(--duration-normal) var(--ease-out);
  z-index: 110;
}

.header__nav-item:hover .header__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(4px);
}

.header__dropdown a {
  display: block;
  padding: 10px 24px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: all var(--duration-fast);
}

.header__dropdown a:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.04);
}

/* 右侧操作区 */
.header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.header__cta {
  padding: 8px 20px;
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--white);
  border: 1px solid var(--border-thin);
  transition: all var(--duration-fast);
  white-space: nowrap;
}

.header__cta:hover {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}

/* ★ 13.4: hamburger 独立于 header__actions */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  cursor: pointer;
  z-index: 120;
  flex-shrink: 0;
}

.hamburger span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--white);
  transition: all var(--duration-normal) var(--ease-out);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(4.5px, 4.5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(4.5px, -4.5px);
}

/* ============================================================
   6. 移动端导航
   ============================================================ */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 320px;
  max-width: 85vw;
  height: 100vh;
  background: var(--black);
  z-index: 200;
  transform: translateX(-100%);
  transition: transform var(--duration-normal) var(--ease-out);
  overflow-y: auto;
  padding: 24px;
  border-right: 1px solid var(--border-subtle);
}

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

.mobile-nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: 199;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal);
}

.mobile-nav__overlay.show {
  opacity: 1;
  visibility: visible;
}

body.nav-open { overflow: hidden; }

.mobile-nav__link {
  display: block;
  padding: 14px 0;
  font-size: 1rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
}

.mobile-nav__sub {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-normal) var(--ease-out);
  padding-left: 16px;
}

.mobile-nav__sub.open { max-height: 500px; }

.mobile-nav__sub a {
  display: block;
  padding: 10px 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-subtle);
}

/* ============================================================
   7. Hero / Banner 全屏轮播
   ============================================================ */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  background: var(--black);
}

.hero-swiper {
  width: 100%;
  height: 100%;
}

.hero__slide {
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.3) 0%,
    rgba(0, 0, 0, 0.25) 40%,
    rgba(0, 0, 0, 0.65) 80%,
    rgba(0, 0, 0, 0.9) 100%
  );
  z-index: 2;
  pointer-events: none;
}

.hero__content {
  position: absolute;
  bottom: 18%;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  z-index: 5;
  width: 90%;
  max-width: 800px;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 4.5rem);
  font-weight: 200;
  color: var(--white);
  letter-spacing: 0.04em;
  margin-bottom: 16px;
  line-height: 1.1;
}

.hero__subtitle {
  font-size: clamp(0.9rem, 1.5vw, 1.15rem);
  color: rgba(255, 255, 255, 0.6);
  font-weight: 300;
  letter-spacing: 0.06em;
  margin-bottom: 36px;
}

.hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* 滚动指示器 */
.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.4);
  animation: scrollBounce 2s ease-in-out infinite;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.3), transparent);
}

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

/* ============================================================
   8. 内页 Banner
   ============================================================ */
.inner-banner {
  position: relative;
  height: 360px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: var(--header-h);
}

.inner-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
}

.inner-banner__content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.inner-banner__title {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 300;
  color: var(--white);
  letter-spacing: 0.04em;
}

.inner-banner__subtitle {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.08em;
  margin-top: 8px;
}

/* ============================================================
   9. 面包屑
   ============================================================ */
.breadcrumb {
  background: var(--bg-section);
  border-bottom: 1px solid var(--border-subtle);
  padding: 14px 0;
}

.breadcrumb .container {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--white); }
.breadcrumb span { margin: 0 8px; }
.breadcrumb .current { color: var(--text-secondary); }

/* ============================================================
   10. 按钮
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  border: 1px solid transparent;
  white-space: nowrap;
  line-height: 1;
}

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

.btn--primary:hover {
  background: var(--gray-300);
  border-color: var(--gray-300);
  color: var(--black);
}

.btn--outline {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}

.btn--outline:hover {
  background: var(--white);
  color: var(--black);
}

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-thin);
}

.btn--ghost:hover {
  border-color: var(--white);
  color: var(--white);
}

.btn--sm {
  padding: 10px 20px;
  font-size: 0.72rem;
}

.btn--lg {
  padding: 18px 40px;
  font-size: 0.9rem;
}

.btn i { font-size: 0.85em; }

/* ============================================================
   11. 卡片（无边框 + 全出血图片 + 无圆角）
   ============================================================ */
.card {
  display: block;
  background: var(--bg-card);
  overflow: hidden;
  transition: background var(--duration-normal) var(--ease-out);
}

.card:hover {
  background: var(--bg-card-hover);
}

.card__image {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--dark-100);
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slower) var(--ease-out);
}

.card:hover .card__image img {
  transform: scale(1.04);
}

.card__body {
  padding: 24px 0;
}

.card__tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.card__title {
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.35;
}

.card__desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}

.card__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.card__meta i {
  font-size: 0.7rem;
  margin-right: 4px;
  color: var(--gray-500);
}

.card__date {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
  display: block;
}

/* 卡片 — 带细线边框变体 */
.card--bordered {
  border: 1px solid var(--border-subtle);
}

.card--bordered:hover {
  border-color: var(--border-thin);
}

/* ============================================================
   12. 精选作品网格 (首页 + 作品集页)
   ============================================================ */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}

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

@media (max-width: 1023px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   13. 关于预览 (首页)
   ============================================================ */
.about-preview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-preview__image {
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--dark-100);
}

.about-preview__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-preview__text {
  padding: 40px 0;
}

.about-preview__text .section-title {
  text-align: left;
}

.about-preview__text p {
  color: var(--text-secondary);
  line-height: 2;
  margin: 24px 0 32px;
}

@media (max-width: 1023px) {
  .about-preview {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .about-preview__image {
    aspect-ratio: 16 / 9;
  }
}

/* ============================================================
   14. 服务套餐卡片
   ============================================================ */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.pricing-card {
  background: var(--bg-card);
  padding: 48px 36px;
  text-align: center;
  transition: background var(--duration-normal) var(--ease-out);
}

.pricing-card:hover {
  background: var(--bg-card-hover);
}

.pricing-card--featured {
  background: var(--dark-200);
  border: 1px solid var(--border-thin);
}

.pricing-card__name {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.pricing-card__price {
  font-size: 2.4rem;
  font-weight: 200;
  color: var(--white);
  margin-bottom: 4px;
  font-family: var(--font-display);
}

.pricing-card__unit {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.pricing-card ul {
  text-align: left;
  margin-bottom: 36px;
}

.pricing-card ul li {
  padding: 8px 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
}

.pricing-card ul li::before {
  content: '— ';
  color: var(--text-muted);
  font-size: 0.7rem;
}

@media (max-width: 1023px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 1px;
  }
}

/* ============================================================
   15. 客片故事网格
   ============================================================ */
.stories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}

@media (max-width: 1023px) {
  .stories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .stories-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   16. 客户评价
   ============================================================ */
.testimonials-section {
  background: var(--bg-section);
  padding: var(--section-py) 0;
}

.testimonial-swiper {
  max-width: 700px;
  margin: 0 auto;
}

.testimonial {
  text-align: center;
  padding: 20px;
}

.testimonial p {
  font-size: 1.2rem;
  font-weight: 300;
  line-height: 1.9;
  color: var(--text-secondary);
  font-style: italic;
  margin-bottom: 20px;
}

.testimonial cite {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-style: normal;
  letter-spacing: 0.06em;
}

.testimonial-swiper .swiper-pagination {
  position: static;
  margin-top: 32px;
}

.testimonial-swiper .swiper-pagination-bullet {
  width: 6px;
  height: 6px;
  background: var(--gray-600);
  opacity: 1;
  border-radius: 0;
  transition: background var(--duration-fast);
}

.testimonial-swiper .swiper-pagination-bullet-active {
  background: var(--white);
}

/* ============================================================
   17. 新闻模块 (首页 + 列表)
   ============================================================ */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.news-list .card {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  padding: 0;
  align-items: center;
}

.news-list .card__image {
  aspect-ratio: 4 / 3;
}

.news-list .card__body {
  padding: 24px 0;
}

@media (max-width: 1023px) {
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .news-grid {
    grid-template-columns: 1fr;
  }
  .news-list .card {
    grid-template-columns: 1fr;
  }
  .news-list .card__image {
    aspect-ratio: 16 / 9;
  }
}

/* ============================================================
   18. CTA 区域
   ============================================================ */
.cta-section {
  background: var(--bg-section);
  text-align: center;
  padding: var(--section-py) 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.cta-section__title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 300;
  color: var(--white);
  margin-bottom: 12px;
}

.cta-section__desc {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 36px;
}

.cta-section .btn + .btn {
  margin-left: 12px;
}

/* ============================================================
   19. 作品详情页
   ============================================================ */
.work-detail {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  padding: 60px 0;
  align-items: flex-start;
}

.work-detail__gallery {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  background: var(--bg-card);
}

.work-detail__gallery img {
  width: 100%;
  height: auto;
}

.work-swiper {
  width: 100%;
}

.work-swiper .swiper-button-next,
.work-swiper .swiper-button-prev {
  color: var(--white);
  width: 44px;
  height: 44px;
  background: rgba(0, 0, 0, 0.5);
  transition: background var(--duration-fast);
}

.work-swiper .swiper-button-next:hover,
.work-swiper .swiper-button-prev:hover {
  background: rgba(0, 0, 0, 0.8);
}

.work-swiper .swiper-button-next::after,
.work-swiper .swiper-button-prev::after {
  font-size: 1rem;
}

.work-detail__info {
  padding-top: 0;
}

.work-detail__info h1 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  margin-bottom: 32px;
}

.work-detail__params {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-bottom: 32px;
}

.work-detail__params .param {
  padding: 16px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.param__label {
  display: block;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.param__value {
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 400;
}

.work-detail__body {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 2;
  margin-bottom: 32px;
}

.work-detail__body img {
  margin: 24px 0;
}

/* 相关作品 */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  margin-top: 4px;
}

@media (max-width: 1023px) {
  .work-detail {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .work-detail__gallery {
    position: static;
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .related-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   20. 新闻/故事详情页
   ============================================================ */
.content-detail {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 60px 0;
}

.content-detail h1 {
  margin-bottom: 20px;
}

.content-detail .meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.content-detail .meta i {
  margin-right: 6px;
  font-size: 0.7rem;
}

.content-body {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 2;
}

.content-body img {
  margin: 32px 0;
}

.content-body p {
  margin-bottom: 1.5em;
}

/* 上一篇/下一篇 */
.prev-next {
  display: flex;
  justify-content: space-between;
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  gap: 20px;
}

.prev-next a {
  color: var(--text-muted);
}

.prev-next a:hover {
  color: var(--white);
}

/* ============================================================
   21. 分页
   ============================================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 56px;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  transition: all var(--duration-fast);
}

.pagination a:hover {
  border-color: var(--white);
  color: var(--white);
}

.pagination .active {
  border-color: var(--white);
  color: var(--white);
  background: var(--white);
  color: var(--black);
}

.pagination .disabled {
  opacity: 0.3;
  pointer-events: none;
}

/* 空状态 */
.no-data {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-muted);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

/* ============================================================
   22. 联系页面
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  padding: 60px 0;
}

.contact-info__item {
  display: flex;
  gap: 16px;
  margin-bottom: 32px;
}

.contact-info__icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-subtle);
  font-size: 1rem;
  color: var(--text-muted);
}

.contact-info__text h4 {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.contact-info__text p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

@media (max-width: 1023px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

/* ============================================================
   23. 表单
   ============================================================ */
.form-group {
  margin-bottom: 20px;
}

.form-control {
  width: 100%;
  padding: 14px 0;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border-thin);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 300;
  transition: border-color var(--duration-fast);
}

.form-control:focus {
  outline: none;
  border-bottom-color: var(--white);
}

.form-control::placeholder {
  color: var(--text-muted);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

select.form-control {
  appearance: none;
  -webkit-appearance: none;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23666' fill='none' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right center;
  padding-right: 24px;
}

/* 订阅表单 */
.subscribe-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 24px auto 0;
}

.subscribe-form .form-control {
  flex: 1;
}

.subscribe-card {
  text-align: center;
  padding: 64px 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
}

@media (max-width: 767px) {
  .subscribe-form {
    flex-direction: column;
  }
}

/* ============================================================
   24. 筛选栏 (作品集子栏目导航)
   ============================================================ */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-bar a {
  padding: 10px 24px;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 1px solid transparent;
  transition: all var(--duration-fast);
}

.filter-bar a:hover,
.filter-bar a.active {
  color: var(--white);
  border-bottom-color: var(--white);
}

/* ============================================================
   25. 档期预约页
   ============================================================ */
.booking-form {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 60px 0;
}

.booking-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.booking-form .form-row--full {
  grid-template-columns: 1fr;
}

.booking-form h2 {
  margin-bottom: 8px;
}

.booking-form .section-label {
  margin-bottom: 8px;
}

@media (max-width: 767px) {
  .booking-form .form-row {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   26. 搜索页
   ============================================================ */
.search-header {
  text-align: center;
  padding: 40px 0;
  background: var(--bg-section);
}

.search-header .form-control {
  max-width: 500px;
  margin: 20px auto 0;
  text-align: center;
  font-size: 1.1rem;
}

.search-results {
  padding: 60px 0;
}

.search-results .card {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
  margin-bottom: 2px;
  padding: 0;
}

.search-results .card__image {
  aspect-ratio: 4 / 3;
}

.search-results .card__body {
  padding: 20px 0;
}

@media (max-width: 767px) {
  .search-results .card {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   27. Footer
   ============================================================ */
.footer {
  background: var(--bg-body);
  border-top: 1px solid var(--border-subtle);
  padding: 64px 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 40px 48px;
}

.footer__brand-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin: 16px 0 20px;
  max-width: 280px;
}

.footer__social {
  display: flex;
  gap: 12px;
}

.footer__social a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: all var(--duration-fast);
}

.footer__social a:hover {
  border-color: var(--white);
  color: var(--white);
  background: var(--white);
  color: var(--black);
}

.footer__col-title {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__links a {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer__links a:hover {
  color: var(--white);
}

.footer__contact-item {
  display: flex;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  align-items: flex-start;
}

.footer__contact-item i {
  width: 16px;
  margin-top: 4px;
  flex-shrink: 0;
  color: var(--gray-600);
  font-size: 0.7rem;
}

.footer__qrcode {
  width: 100px;
  height: 100px;
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.4;
}

/* 友情链接 */
.friend-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  padding: 0 0 24px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 40px 32px;
  border-bottom: 1px solid var(--border-subtle);
}

.friend-links__label {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  flex-shrink: 0;
}

.friend-links a {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.friend-links a:hover {
  color: var(--white);
}

/* 底部版权 */
.footer__bottom {
  padding: 20px 40px;
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.footer__bottom a {
  color: var(--text-muted);
}

.footer__bottom a:hover {
  color: var(--white);
}

@media (max-width: 1023px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767px) {
  .footer__grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }
  .friend-links {
    justify-content: center;
  }
}

/* ============================================================
   28. 返回顶部
   ============================================================ */
.back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--dark-200);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  z-index: 90;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--duration-normal) var(--ease-out);
}

.back-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-top:hover {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}

/* ============================================================
   29. 动画 (AOS 覆盖 + 自定义)
   ============================================================ */
[data-aos] {
  transition-timing-function: var(--ease-out);
}

/* 淡入上移 */
[data-aos="fade-up"] {
  opacity: 0;
  transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

/* 图片加载后淡入 */
img[data-src].loaded {
  animation: imgFadeIn var(--duration-slow) var(--ease-out) forwards;
}

@keyframes imgFadeIn {
  from { opacity: 0; transform: scale(1.02); }
  to { opacity: 1; transform: scale(1); }
}

/* ============================================================
   30. 列表页通用
   ============================================================ */
.list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
  flex-wrap: wrap;
  gap: 16px;
}

.list-header__title {
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--text-primary);
}

/* ============================================================
   31. Swiper 自定义
   ============================================================ */
.swiper-pagination-bullet {
  width: 6px;
  height: 6px;
  background: rgba(255, 255, 255, 0.3);
  opacity: 1;
  border-radius: 0;
  transition: all var(--duration-fast);
}

.swiper-pagination-bullet-active {
  background: var(--white);
  width: 24px;
}

/* Hero swiper pagination */
.hero .swiper-pagination {
  bottom: 120px !important;
}

/* ============================================================
   32. 响应式 (768px 断点)
   ============================================================ */
@media (max-width: 1023px) {
  :root {
    --section-py: 80px;
    --section-py-md: 56px;
    --section-py-sm: 48px;
  }

  .container {
    padding: 0 24px;
  }

  .header__inner {
    padding: 0 24px;
    gap: 20px;
  }

  /* 隐藏桌面导航和操作区 */
  .header__nav,
  .header__actions {
    display: none;
  }

  /* 显示汉堡菜单 */
  .hamburger {
    display: flex;
    margin-left: auto;
  }

  /* 保留移动端CTA */
  .header__cta-mobile {
    display: inline-flex;
  }

  .section-header {
    margin-bottom: 48px;
  }
}

/* ============================================================
   32b. 移动端重新排版 (< 768px)
   不是把 PC 版式压成一列：
     · 区块留白 64 → 38，区块标题间距 64 → 22
     · 作品/客片/新闻三套网格保留 2 列（原来是塌成单列的超长条）
     · 套餐卡、页脚、评价区按移动端节奏重排
     · 正文行高、图文列表尺寸同步收紧
   ============================================================ */
@media (max-width: 767px) {
  :root {
    --section-py: 38px;
    --section-py-md: 30px;
    --section-py-sm: 24px;
    --header-h: 60px;
  }

  .container { padding: 0 16px; }

  /* ---------- 区块标题 ---------- */
  .section-header { margin-bottom: 22px; }
  .section-label { font-size: 0.62rem; letter-spacing: 0.14em; margin-bottom: 8px; }
  .section-title { font-size: clamp(1.3rem, 5.5vw, 1.7rem); margin-bottom: 8px; }
  .section-subtitle { font-size: 0.82rem; max-width: 100%; line-height: 1.65; }
  .section-footer { margin-top: 20px; }
  .section-divider { margin: 0 auto 22px; }

  /* ---------- Hero：满屏 → 约 2/3 屏 ---------- */
  .hero {
    height: 62vh;
    min-height: 420px;
    max-height: 560px;
  }
  .hero__content { bottom: 12%; width: 90%; }
  .hero__title { font-size: clamp(1.5rem, 7vw, 2.2rem); margin-bottom: 10px; line-height: 1.25; }
  .hero__subtitle { font-size: 0.85rem; margin-bottom: 20px; line-height: 1.6; }
  .hero__actions { gap: 10px; flex-wrap: nowrap; }
  .hero__actions .btn { flex: 1 1 0; min-width: 0; padding: 12px 10px; font-size: 0.8rem; }
  .hero__scroll { display: none; }

  /* ---------- 内页 Banner / 面包屑 ---------- */
  .inner-banner { height: 168px; margin-top: var(--header-h); }
  .inner-banner__title { font-size: clamp(1.35rem, 6vw, 1.9rem); }
  .inner-banner__subtitle { font-size: 0.78rem; margin-top: 5px; }
  .breadcrumb { padding: 9px 0; font-size: 0.72rem; }

  /* ---------- 按钮：触摸目标 ≥44px ---------- */
  .btn { min-height: 44px; padding: 12px 20px; font-size: 0.85rem; }
  .btn--sm { min-height: 40px; padding: 10px 18px; font-size: 0.8rem; }
  .btn--lg { width: 100%; max-width: 340px; }

  /* ---------- 卡片基座：紧凑化 ---------- */
  .card__body { padding: 12px 0; }
  .card__tag { font-size: 0.6rem; margin-bottom: 5px; }
  .card__title { font-size: 0.9rem; line-height: 1.35; margin-bottom: 5px; }
  .card__desc { font-size: 0.74rem; line-height: 1.55; -webkit-line-clamp: 2; margin-bottom: 6px; }
  .card__meta { font-size: 0.7rem; gap: 10px; }
  .card__date { font-size: 0.64rem; margin-bottom: 4px; }

  /* ---------- 精选作品 / 客片故事 / 新闻：保留 2 列 ---------- */
  .portfolio-grid,
  .stories-grid,
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }

  .portfolio-grid .card__image,
  .stories-grid .card__image { aspect-ratio: 4 / 5; }

  .news-grid .card__image { aspect-ratio: 4 / 3; }

  /* 作品集列表页（列表卡片本身是横排图文，无需再压） */
  .portfolio-grid .card__title { -webkit-line-clamp: 2; display: -webkit-box; -webkit-box-orient: vertical; overflow: hidden; }

  /* ---------- 关于预览 ---------- */
  .about-preview { grid-template-columns: 1fr; gap: 18px; }
  .about-preview__image { aspect-ratio: 16 / 9; }
  .about-preview__text { padding: 0; }
  .about-preview__text p { font-size: 0.84rem; line-height: 1.8; margin: 12px 0 16px; }

  /* ---------- 服务套餐 ---------- */
  .pricing-grid { grid-template-columns: 1fr; gap: 1px; }
  .pricing-card { padding: 22px 16px; text-align: left; }
  .pricing-card__name { margin-bottom: 8px; line-height: 1.4; }
  .pricing-card__price { font-size: 1.8rem; line-height: 1.15; }
  .pricing-card__unit { margin-bottom: 12px; line-height: 1.4; }
  .pricing-card ul { margin-bottom: 14px; }
  .pricing-card ul li { padding: 5px 0; font-size: 0.78rem; line-height: 1.5; }
  .pricing-card .btn { width: 100%; }

  /* ---------- 客户评价 ---------- */
  .testimonials-section { padding: var(--section-py) 0; }
  .testimonial { padding: 4px 0; }
  .testimonial p { font-size: 0.9rem; line-height: 1.8; margin-bottom: 12px; }

  /* ---------- CTA ---------- */
  .cta-section { padding: var(--section-py) 0; }
  .cta-section__title { font-size: clamp(1.3rem, 6vw, 1.7rem); margin-bottom: 8px; }
  .cta-section__desc { font-size: 0.84rem; margin-bottom: 18px; }
  .cta-section .btn { display: block; margin: 0 auto 10px !important; max-width: 340px; }
  .cta-section .btn + .btn { margin-left: auto; }

  /* ---------- 作品详情 / 内容详情 ---------- */
  .work-detail { grid-template-columns: 1fr; gap: 20px; padding: 38px 0; }
  .work-detail__gallery { position: static; }
  .work-detail__info h1 { font-size: clamp(1.25rem, 5.5vw, 1.7rem); margin-bottom: 18px; }
  .work-detail__params { margin-bottom: 20px; }
  .work-detail__params .param { padding: 11px 0; }
  .param__label { font-size: 0.6rem; }
  .param__value { font-size: 0.82rem; }
  .work-detail__body { font-size: 0.84rem; line-height: 1.85; margin-bottom: 20px; }
  .work-detail__body img { margin: 16px 0; }
  .content-detail { padding: 38px 0; }

  /* ---------- 相关推荐：2 列 ---------- */
  .related-grid { grid-template-columns: repeat(2, 1fr); gap: 6px; }

  /* ---------- 新闻/搜索列表：小图横排 ---------- */
  .news-list .card {
    grid-template-columns: 104px 1fr;
    gap: 12px;
    align-items: center;
    padding: 8px 0;
  }
  .news-list .card__image { aspect-ratio: 4 / 3; }
  .news-list .card__body { padding: 0; }
  .news-list .card__title { -webkit-line-clamp: 2; }

  .search-results .card {
    grid-template-columns: 96px 1fr;
    gap: 12px;
    align-items: center;
  }
  .search-results .card__image { aspect-ratio: 4 / 3; }
  .search-results .card__body { padding: 0; }

  /* ---------- 表单 ---------- */
  .booking-form .form-row { grid-template-columns: 1fr; }
  .form-control,
  .booking-form .form-control,
  .subscribe-form input { font-size: 1rem; }   /* ≥16px，避免 iOS 聚焦缩放 */
  .form-group { margin-bottom: 12px; }
  .subscribe-form { flex-direction: column; }
  .subscribe-form .btn { width: 100%; }

  /* ---------- 分页 ---------- */
  .pagination { margin-top: 20px; gap: 4px; }
  .pagination a, .pagination span { min-width: 36px; height: 36px; font-size: 0.78rem; }

  /* ---------- Footer：品牌通栏 + 导航/二维码并排 + 联系方式分栏 ---------- */
  .footer { padding-top: 30px; }
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px 16px;
    padding: 0 16px 24px;
  }
  /* 显式定位：品牌(1) → 快速链接(2)/关注(4) → 联系我们(3) */
  .footer__grid > div:nth-child(1) { grid-column: 1 / -1; grid-row: 1; }
  .footer__grid > div:nth-child(2) { grid-column: 1; grid-row: 2; }
  .footer__grid > div:nth-child(4) { grid-column: 2; grid-row: 2; }
  .footer__grid > div:nth-child(3) {
    grid-column: 1 / -1;
    grid-row: 3;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px 14px;
    align-content: start;
  }
  .footer__grid > div:nth-child(3) .footer__col-title { grid-column: 1 / -1; margin-bottom: 2px; }

  .footer__brand-desc { font-size: 0.76rem; line-height: 1.7; margin: 8px 0; max-width: 100%; }
  .footer__social { gap: 8px; }
  .footer__social a { width: 32px; height: 32px; font-size: 0.8rem; }
  .footer__col-title { font-size: 0.7rem; margin-bottom: 10px; letter-spacing: 0.08em; }
  .footer__links { gap: 8px; }
  .footer__links a { font-size: 0.76rem; }
  .footer__contact-item { font-size: 0.72rem; margin-bottom: 0; gap: 7px; line-height: 1.5; }
  .footer__contact-item i { width: 13px; font-size: 0.68rem; margin-top: 3px; }
  .footer__qrcode { width: 84px; height: 84px; font-size: 0.6rem; }

  .friend-links { justify-content: center; gap: 10px; padding: 12px 16px; }
  .friend-links__label { font-size: 0.68rem; }
  .friend-links a { font-size: 0.72rem; }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
    padding: 14px 16px;
    gap: 6px;
    font-size: 0.68rem;
  }

  /* ---------- 悬浮按钮 ---------- */
  .back-top { bottom: 20px; right: 16px; width: 40px; height: 40px; }
}

/* ============================================================
   33. 减少动画偏好
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ============================================================
   34. 工具类
   ============================================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.hidden { display: none !important; }
.text-center { text-align: center; }
.text-left { text-align: left; }
.mt-0 { margin-top: 0; }
.mt-sm { margin-top: 16px; }
.mt-md { margin-top: 32px; }
.mt-lg { margin-top: 48px; }
.mb-0 { margin-bottom: 0; }
.mb-md { margin-bottom: 32px; }