/**
 * 雅藏拍卖行 — 深色奢华主题样式
 * Yacang Auction House — Luxury Dark Theme
 *
 * 设计基调：博物馆暗场灯光 + 金色尊贵点缀 + 艺术品鉴赏画册排版
 * 配色：深色基底(#0D0D0D/#1A1A1A) + 金色(#C9A84C) + 米白 + 朱砂红点缀
 * 纯原生 CSS，无框架依赖
 */

/* ============================================================
   CSS 变量体系
   ============================================================ */
:root {
  /* === 基底色 — 博物馆暗场 === */
  --bg-deepest: #0D0D0D;
  --bg-deep: #1A1A1A;
  --bg-surface: #222222;
  --bg-card: #1E1E1E;
  --bg-card-hover: #262626;
  --bg-input: rgba(255, 255, 255, 0.04);

  /* === 金色系 — 尊贵点缀 === */
  --gold: #C9A84C;
  --gold-light: #D4BA6A;
  --gold-dark: #A88A3A;
  --gold-dim: rgba(201, 168, 76, 0.12);
  --gold-glow: rgba(201, 168, 76, 0.25);
  --gold-gradient: linear-gradient(135deg, #C9A84C 0%, #E0C87A 30%, #B8943E 60%, #C9A84C 100%);

  /* === 点缀色 === */
  --vermillion: #C41E3A;
  --vermillion-dim: rgba(196, 30, 58, 0.12);
  --cream: #F5F0E8;
  --cream-dim: rgba(245, 240, 232, 0.08);

  /* === 文字色阶 === */
  --text-primary: #F0EDE5;
  --text-secondary: #B8B3A6;
  --text-muted: #6B6660;
  --text-gold: #C9A84C;

  /* === 边框 === */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-card: rgba(255, 255, 255, 0.08);
  --border-gold: rgba(201, 168, 76, 0.3);
  --border-gold-hover: rgba(201, 168, 76, 0.6);

  /* === 阴影 === */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.5);
  --shadow-gold: 0 0 40px rgba(201, 168, 76, 0.08);
  --shadow-gold-strong: 0 0 60px rgba(201, 168, 76, 0.15);

  /* === 圆角 === */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  /* === 间距 === */
  --section-py: 100px;
  --section-py-sm: 60px;
  --container-max: 1280px;
  --container-narrow: 900px;
  --header-h: 80px;

  /* === 过渡 === */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 600ms;
  --duration-glacial: 1000ms;

  /* === 字体 === */
  --font-display: 'Cormorant Garamond', 'Songti SC', 'STSong', 'Noto Serif SC', 'SimSun', serif;
  --font-heading: 'Cormorant Garamond', 'Songti SC', 'STSong', 'Noto Serif SC', serif;
  --font-body: 'Songti SC', 'STSong', 'Noto Serif SC', 'SimSun', serif;
  --font-ui: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Helvetica Neue', sans-serif;
}

/* ============================================================
   全局重置 & 基础
   ============================================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-ui);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-secondary);
  background: var(--bg-deepest);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(201, 168, 76, 0.015) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(196, 30, 58, 0.01) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

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

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

ul, ol { list-style: none; }

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

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

::selection {
  background: rgba(201, 168, 76, 0.3);
  color: var(--text-primary);
}

/* ============================================================
   字体加载（仅加载轻量英文衬线字体，中文使用系统原生字体以获得最佳渲染）
   ============================================================ */


/* ============================================================
   排版
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.25;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); letter-spacing: 0.04em; }
h2 { font-size: clamp(2rem, 3.5vw, 2.75rem); letter-spacing: 0.03em; }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); letter-spacing: 0.02em; }
h4 { font-size: 1.125rem; }

/* ============================================================
   布局容器
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

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

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

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

.section--dark {
  background: var(--bg-deep);
}

.section--darker {
  background: var(--bg-deepest);
}

/* ============================================================
   区块标签 & 标题
   ============================================================ */
.section-tag {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
  position: relative;
  padding-left: 36px;
}

.section-tag::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 24px;
  height: 1px;
  background: var(--gold);
}

.section-title {
  margin-bottom: 12px;
}

.section-subtitle {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 560px;
  line-height: 1.7;
}

/* ============================================================
   按钮系统
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  border-radius: var(--radius-xs);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.btn--primary {
  background: var(--gold-gradient);
  color: var(--bg-deepest);
  border: none;
  font-weight: 600;
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-gold);
}

.btn--outline {
  background: transparent;
  color: var(--gold);
  border: 1px solid var(--border-gold);
}

.btn--outline:hover {
  background: var(--gold-dim);
  border-color: var(--border-gold-hover);
  color: var(--gold-light);
}

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

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

.btn--vermillion {
  background: var(--vermillion);
  color: #fff;
  border: none;
}

.btn--vermillion:hover {
  background: #A0182E;
  transform: translateY(-1px);
}

.btn--sm {
  padding: 8px 18px;
  font-size: 0.78rem;
}

.btn--lg {
  padding: 16px 36px;
  font-size: 0.9rem;
}

/* ============================================================
   Header & Navigation
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  transition: all var(--duration-slow) var(--ease-out);
  background: transparent;
}

.header.scrolled {
  background: rgba(13, 13, 13, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  gap: 40px;
}

/* Logo */
.header__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.header__logo-icon {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--gold);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-xs);
}

.header__logo-text {
  display: flex;
  flex-direction: column;
}

.header__logo-name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.06em;
  line-height: 1.2;
}

.header__logo-sub {
  font-family: var(--font-ui);
  font-size: 0.55rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
}

/* 主导航 */
.header__nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.header__nav-item {
  position: relative;
}

.header__nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 16px;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  border-radius: var(--radius-xs);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

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

/* 导航下拉菜单 */
.header__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 180px;
  background: rgba(26, 26, 26, 0.98);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--ease-out);
  z-index: 60;
}

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

.header__dropdown a {
  display: block;
  padding: 10px 20px;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--text-secondary);
  transition: all var(--duration-fast) var(--ease-out);
}

.header__dropdown a:hover {
  color: var(--gold);
  background: var(--gold-dim);
}

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

.header__cta {
  padding: 8px 20px;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--gold);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-xs);
  transition: all var(--duration-normal) var(--ease-out);
}

.header__cta:hover {
  background: var(--gold-dim);
  color: var(--gold-light);
}

/* 汉堡菜单 (独立于 header__actions, 13.4) */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
  z-index: 110;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-primary);
  transition: all var(--duration-normal) var(--ease-out);
  transform-origin: center;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* 移动端菜单 */
.mobile-nav {
  position: fixed;
  top: 0;
  right: 0;
  width: 320px;
  max-width: 85vw;
  height: 100vh;
  background: var(--bg-deep);
  z-index: 105;
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-out);
  overflow-y: auto;
  padding: 24px;
  border-left: 1px solid var(--border-subtle);
}

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

.mobile-nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 104;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}

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

.mobile-nav__link {
  display: block;
  padding: 14px 16px;
  font-family: var(--font-ui);
  font-size: 0.95rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}

.mobile-nav__link:hover {
  color: var(--gold);
  background: var(--gold-dim);
}

.mobile-nav__sub {
  display: none;
  padding-left: 16px;
  margin-bottom: 8px;
}

.mobile-nav__sub.open {
  display: block;
}

.mobile-nav__sub a {
  display: block;
  padding: 10px 16px;
  font-size: 0.88rem;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
}

.mobile-nav__sub a:hover {
  color: var(--gold);
}

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

.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(13, 13, 13, 0.3) 0%, rgba(13, 13, 13, 0.1) 40%, rgba(13, 13, 13, 0.7) 80%, var(--bg-deepest) 100%);
  z-index: 2;
  pointer-events: none;
}

.hero__content {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 24px;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.08em;
  line-height: 1.15;
  margin-bottom: 20px;
  max-width: 800px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.hero__title .gold {
  color: var(--gold);
  font-style: italic;
}

.hero__subtitle {
  font-family: var(--font-display);
  font-size: clamp(1rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  letter-spacing: 0.12em;
  margin-bottom: 36px;
  font-style: italic;
}

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

.hero-pagination {
  position: absolute;
  bottom: 50px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  gap: 12px;
}

.hero-pagination .swiper-pagination-bullet {
  width: 8px;
  height: 8px;
  background: rgba(255, 255, 255, 0.3);
  opacity: 1;
  border-radius: 50%;
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
}

.hero-pagination .swiper-pagination-bullet-active {
  background: var(--gold);
  box-shadow: 0 0 8px var(--gold-glow);
}

.hero__scroll-indicator {
  position: absolute;
  bottom: 40px;
  right: 40px;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-family: var(--font-ui);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0%, 100% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
}

/* ============================================================
   卡片系统
   ============================================================ */
.card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: all var(--duration-slow) var(--ease-out);
  position: relative;
}

.card:hover {
  border-color: var(--border-gold);
  box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
}

.card__image {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--bg-surface);
}

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

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

.card__body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card__tag {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.card__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.3;
  letter-spacing: 0.02em;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__desc {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
}

.card__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.card__price {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gold);
  margin-top: 8px;
}

/* 金边卡片变体 */
.card--gold {
  border-color: var(--border-gold);
}

.card--gold:hover {
  border-color: var(--border-gold-hover);
  box-shadow: var(--shadow-gold-strong);
}

/* ============================================================
   网格系统
   ============================================================ */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.grid-5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

/* ============================================================
   分类卡片
   ============================================================ */
.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
}

.category-card:hover {
  border-color: var(--border-gold);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
}

.category-card__icon {
  font-size: 2rem;
  color: var(--gold);
  margin-bottom: 16px;
  transition: transform var(--duration-normal) var(--ease-out);
}

.category-card:hover .category-card__icon {
  transform: scale(1.1);
}

.category-card__name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--text-primary);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.category-card__count {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* ============================================================
   特色区块
   ============================================================ */
.feature-card {
  padding: 40px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-out);
}

.feature-card:hover {
  border-color: var(--border-gold);
  box-shadow: var(--shadow-gold);
}

.feature-card__icon {
  font-size: 2.25rem;
  color: var(--gold);
  margin-bottom: 20px;
}

.feature-card__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: 0.03em;
}

.feature-card__desc {
  font-family: var(--font-ui);
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ============================================================
   数字统计区
   ============================================================ */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item__number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.03em;
  line-height: 1.1;
}

.stat-item__suffix {
  font-size: 1.5rem;
  color: var(--gold);
}

.stat-item__label {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  margin-top: 8px;
  text-transform: uppercase;
}

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

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, rgba(201, 168, 76, 0.03) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  color: var(--text-primary);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

/* ============================================================
   金线装饰
   ============================================================ */
.gold-line {
  width: 60px;
  height: 1px;
  background: var(--gold);
  margin: 24px auto;
}

.gold-line--left {
  margin-left: 0;
}

/* ============================================================
   新闻列表
   ============================================================ */
.news-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--duration-normal) var(--ease-out);
}

.news-item:last-child {
  border-bottom: none;
}

.news-item:hover {
  padding-left: 12px;
}

.news-item__image {
  aspect-ratio: 4/3;
  overflow: hidden;
  border-radius: var(--radius-xs);
  background: var(--bg-surface);
}

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

.news-item:hover .news-item__image img {
  transform: scale(1.05);
}

.news-item__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

.news-item__date {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--gold);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.news-item__desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ============================================================
   详情页
   ============================================================ */
.detail-header {
  padding-top: calc(var(--header-h) + 60px);
  padding-bottom: 40px;
  text-align: center;
}

.detail-header__title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin-bottom: 12px;
}
.detail-header__meta {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.detail-header__meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.detail-body {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 24px 60px;
  line-height: 1.9;
  font-size: 1rem;
  color: var(--text-secondary);
}

.detail-body img {
  border-radius: var(--radius-sm);
  margin: 24px 0;
}

.detail-body p {
  margin-bottom: 1.2em;
}

/* ============================================================
   拍品详情布局 (左右分栏)
   ============================================================ */
.lot-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  padding-top: calc(var(--header-h) + 40px);
  padding-bottom: 60px;
  align-items: start;
}

.lot-detail__gallery {
  position: sticky;
  top: calc(var(--header-h) + 20px);
}

.lot-detail__main-img {
  aspect-ratio: 4/3;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  margin-bottom: 12px;
}

.lot-detail__main-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.lot-detail__thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.lot-detail__thumb {
  aspect-ratio: 1;
  border-radius: var(--radius-xs);
  overflow: hidden;
  border: 1px solid var(--border-card);
  cursor: pointer;
  transition: border-color var(--duration-fast);
  background: var(--bg-surface);
}

.lot-detail__thumb:hover,
.lot-detail__thumb.active {
  border-color: var(--border-gold);
}

.lot-detail__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.lot-detail__info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.lot-detail__name {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.04em;
  line-height: 1.25;
}

.lot-detail__params {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.lot-detail__param {
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xs);
}

.lot-detail__param-label {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.lot-detail__param-value {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--text-primary);
}

.lot-detail__param-value.gold {
  color: var(--gold);
  font-weight: 600;
  font-size: 1.35rem;
}

.lot-detail__estimate {
  padding: 24px;
  background: var(--gold-dim);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-sm);
  text-align: center;
}

.lot-detail__estimate-label {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.lot-detail__estimate-value {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--gold);
}

.lot-detail__tabs {
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--border-subtle);
}

/* Tab 切换 */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 32px;
}

.tab-btn {
  padding: 12px 24px;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
}

.tab-btn:hover {
  color: var(--text-secondary);
}

.tab-btn.active {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.tab-panel {
  display: none;
}

.tab-panel:not(.hidden) {
  display: block;
}

.tab-panel.hidden {
  display: none;
}

/* ============================================================
   面包屑
   ============================================================ */
.breadcrumb {
  padding: calc(var(--header-h) + 20px) 0 0;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-muted);
  transition: color var(--duration-fast);
}

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

.breadcrumb .separator {
  margin: 0 8px;
  color: var(--text-muted);
}

/* ============================================================
   页面 Banner
   ============================================================ */
.page-banner {
  position: relative;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-deep);
  overflow: hidden;
  margin-top: 0;
}

.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, rgba(201, 168, 76, 0.05) 0%, transparent 70%);
}

.page-banner__content {
  text-align: center;
  position: relative;
  z-index: 1;
}

.page-banner__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--text-primary);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.page-banner__subtitle {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--gold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* ============================================================
   列表页布局 (左侧栏 + 右侧列表)
   ============================================================ */
.page-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 48px;
  padding: 48px 0 80px;
}

/* 侧边栏 */
.sidebar {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  align-self: start;
}

.sidebar__title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--text-primary);
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.sidebar__subtitle {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-nav a {
  display: block;
  padding: 12px 16px;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-secondary);
  border-left: 2px solid transparent;
  transition: all var(--duration-fast) var(--ease-out);
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
  color: var(--gold);
  border-left-color: var(--gold);
  background: var(--gold-dim);
}

/* ============================================================
   分页
   ============================================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 48px;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 8px;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xs);
  transition: all var(--duration-fast) var(--ease-out);
}

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

.pagination .current {
  background: var(--gold);
  color: var(--bg-deepest);
  border-color: var(--gold);
  font-weight: 600;
}

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

/* 空状态 */
.no-data {
  text-align: center;
  padding: 60px 24px;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

.form-label {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  color: var(--text-primary);
  background: var(--bg-input);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xs);
  transition: border-color var(--duration-fast);
  outline: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--border-gold);
}

.form-textarea {
  min-height: 140px;
  resize: vertical;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

/* 验证码 */
.captcha-row {
  display: flex;
  gap: 12px;
  align-items: center;
}

.captcha-row .form-input {
  flex: 1;
}

.captcha-row img {
  height: 44px;
  border-radius: var(--radius-xs);
  cursor: pointer;
}

/* ============================================================
   联系信息
   ============================================================ */
.contact-info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.contact-info__item {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  transition: all var(--duration-normal) var(--ease-out);
}

.contact-info__item:hover {
  border-color: var(--border-gold);
}

.contact-info__icon {
  font-size: 1.75rem;
  color: var(--gold);
  margin-bottom: 12px;
}

.contact-info__label {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.contact-info__value {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--text-primary);
}

/* ============================================================
   底部
   ============================================================ */
.footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer__brand-desc {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

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

.footer__social a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--text-muted);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xs);
  transition: all var(--duration-fast) var(--ease-out);
}

.footer__social a:hover {
  color: var(--gold);
  border-color: var(--border-gold);
}

.footer__col-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--text-primary);
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer__links a {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--duration-fast);
}

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

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer__contact-item i {
  color: var(--gold);
  margin-top: 4px;
  font-size: 0.75rem;
  width: 16px;
  text-align: center;
}

.footer__qrcode {
  width: 100px;
  height: 100px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-ui);
  font-size: 0.65rem;
  color: var(--text-muted);
  text-align: center;
}

/* 友情链接 */
.friend-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 24px 0;
  border-top: 1px solid var(--border-subtle);
  margin-top: 40px;
}

.friend-links__label {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.friend-links a {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--text-muted);
  transition: color var(--duration-fast);
}

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

/* 底部版权栏 */
.footer__bottom {
  background: var(--bg-deepest);
  padding: 20px 0;
  border-top: 1px solid var(--border-subtle);
}

.footer__bottom-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ============================================================
   返回顶部
   ============================================================ */
.back-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--gold);
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-xs);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--duration-normal) var(--ease-out);
  z-index: 90;
  cursor: pointer;
}

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

.back-top:hover {
  background: var(--gold-dim);
  box-shadow: var(--shadow-gold);
}

/* ============================================================
   在线客服按钮
   ============================================================ */
.online-service {
  position: fixed;
  bottom: 90px;
  right: 30px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--bg-deepest);
  background: var(--gold-gradient);
  border-radius: 50%;
  box-shadow: 0 4px 20px rgba(201, 168, 76, 0.3);
  z-index: 90;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  animation: pulse-gold 3s ease-in-out infinite;
}

.online-service:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 28px rgba(201, 168, 76, 0.4);
}

@keyframes pulse-gold {
  0%, 100% { box-shadow: 0 4px 20px rgba(201, 168, 76, 0.3); }
  50% { box-shadow: 0 4px 32px rgba(201, 168, 76, 0.5); }
}

/* ============================================================
   动画工具类
   ============================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 淡入延迟序列 */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }

/* ============================================================
   图片懒加载占位
   ============================================================ */
img[data-src] {
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease-out);
}

img[data-src].loaded {
  opacity: 1;
}

/* ============================================================
   搜索页
   ============================================================ */
.search-header {
  padding: calc(var(--header-h) + 40px) 0 32px;
  text-align: center;
}

.search-form {
  display: flex;
  max-width: 560px;
  margin: 0 auto;
  gap: 0;
}

.search-form input {
  flex: 1;
  padding: 14px 20px;
  font-size: 0.95rem;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-right: none;
  border-radius: var(--radius-xs) 0 0 var(--radius-xs);
  color: var(--text-primary);
  outline: none;
}

.search-form input:focus {
  border-color: var(--border-gold);
}

.search-form button {
  padding: 14px 28px;
  font-family: var(--font-ui);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  background: var(--gold-gradient);
  color: var(--bg-deepest);
  border: none;
  border-radius: 0 var(--radius-xs) var(--radius-xs);
  cursor: pointer;
  transition: opacity var(--duration-fast);
}

.search-form button:hover {
  opacity: 0.9;
}

/* ============================================================
   响应式 — 768px 断点
   ============================================================ */
@media (max-width: 1024px) {
  .header__nav { display: none; }
  .hamburger { display: flex; }
  .page-layout { grid-template-columns: 1fr; gap: 32px; }
  .sidebar { position: static; }
  .lot-detail { grid-template-columns: 1fr; gap: 32px; }
  .lot-detail__gallery { position: static; }
  .footer__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --section-py: 64px;
    --section-py-sm: 40px;
    --header-h: 64px;
  }

  /* === 全局居中修复 === */
  body {
    overflow-x: hidden;
    width: 100%;
    min-width: 320px;
  }

  .container {
    padding-left: 20px;
    padding-right: 20px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  /* === 网格全宽 === */
  .grid-2, .grid-3, .grid-4, .grid-5 {
    grid-template-columns: 1fr;
    width: 100%;
  }

  .stats { grid-template-columns: repeat(2, 1fr); }
  .contact-info { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 1fr; gap: 16px; }
  .news-item__image { aspect-ratio: 16/9; }

  /* === Hero 居中 === */
  .hero {
    width: 100%;
    min-height: 100vh;
    min-height: 100svh;
  }
  .hero__title { font-size: clamp(1.75rem, 8vw, 2.5rem); text-align: center; padding: 0 8px; }
  .hero__subtitle { text-align: center; }
  .hero__actions { flex-direction: column; align-items: center; width: 100%; }
  .hero__content { padding: 0 20px; width: 100%; box-sizing: border-box; }

  /* === Header === */
  .header__inner {
    padding: 0 20px;
    gap: 16px;
    justify-content: flex-start;
  }
  .header__logo {
    order: 2;
    flex: 1;
    justify-content: center;
  }
  .hamburger {
    order: 1;
    margin-right: 0;
  }
  .header__actions {
    order: 3;
  }
  .header__cta { display: none; }

  /* === 内页banner === */
  .page-banner { height: 200px; width: 100%; }
  .page-banner__content { padding: 0 20px; }
  .page-banner__title { font-size: 1.75rem; }

  /* === 面包屑 === */
  .breadcrumb { padding-left: 0; padding-right: 0; }

  /* === 详情页 === */
  .lot-detail__params { grid-template-columns: 1fr; }
  .lot-detail { padding-left: 0; padding-right: 0; }
  .lot-detail__info { padding: 0; }

  /* === 区块标题居中 === */
  .section-title { text-align: center; }
  .section-subtitle { text-align: center; margin-left: auto; margin-right: auto; }

  /* === CTA区域 === */
  .cta-section { padding-left: 20px; padding-right: 20px; }

  /* === 按钮全宽 === */
  .btn--lg { width: 100%; justify-content: center; }

  /* === 详情页header === */
  .detail-header { padding-left: 20px; padding-right: 20px; }
  .detail-header__meta { flex-direction: column; gap: 6px; }

  /* === Footer === */
  .footer { padding-left: 0; padding-right: 0; }
  .footer__grid { grid-template-columns: 1fr; gap: 32px; text-align: center; }
  .footer__brand-desc { text-align: center; }
  .footer__social { justify-content: center; }
  .footer__contact-item { justify-content: center; }
  .footer__bottom-inner { flex-direction: column; text-align: center; gap: 12px; }
  .footer .container { text-align: center; }

  /* === 友情链接居中 === */
  .friend-links { justify-content: center; }
  .friend-links__label { width: 100%; text-align: center; }

  /* === 搜索框 === */
  .search-form { flex-direction: column; }
  .search-form input { border-radius: var(--radius-xs); border-right: 1px solid var(--border-card); }
  .search-form button { border-radius: var(--radius-xs); width: 100%; justify-content: center; margin-top: 8px; }

  /* === 表单 === */
  .captcha-row { flex-direction: column; }

  /* === 悬浮按钮 === */
  .back-top { bottom: 20px; right: 16px; width: 38px; height: 38px; }
  .online-service { bottom: 70px; right: 16px; width: 42px; height: 42px; }

  /* === 区块底部分隔 === */
  .section-tag { font-size: 0.65rem; margin-left: auto; margin-right: auto; display: table; }
  .section-tag::before { display: none; }

  .tab-btn { padding: 10px 14px; font-size: 0.78rem; }

  /* === 列表行居中 === */
  .news-item { text-align: left; }
  .news-item__title { text-align: left; }

  /* === 关于我们两栏 === */
  .guide-section, .grid-2 { text-align: center; }
  .guide-text { text-align: center; }
  .gold-line--left { margin-left: auto; margin-right: auto; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero__title { font-size: 1.5rem; }
  .hero__subtitle { font-size: 0.85rem; }
  .stats { grid-template-columns: 1fr; }
  .section-title { font-size: 1.5rem; }

  /* 拍品参数网格 */
  .lot-detail__params { grid-template-columns: 1fr; }
  .lot-detail__name { font-size: 1.5rem; text-align: center; }

  /* 详情页tab */
  .tabs { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .tab-btn { white-space: nowrap; flex-shrink: 0; }

  /* 页脚二维码居中 */
  .footer__qrcode { margin: 0 auto; }
}

/* Responsive auction catalogue: retain artwork, gold palette and desktop composition. */
@media(max-width:1024px){
 body{overflow-x:visible}
 .mobile-nav{visibility:hidden;height:100dvh}
 .mobile-nav.open{visibility:visible}
 .header:has(.hamburger.active){z-index:110}
 .mobile-nav__inner{padding-top:50px}
 .mobile-nav__link{padding-top:11px;padding-bottom:11px}
 .hamburger{width:44px;height:44px;justify-content:center;align-items:center;flex-shrink:0}
 .grid-2>*,.grid-3>*,.grid-4>*,.grid-5>*,.page-layout>*,.lot-detail>*,.footer__grid>*{min-width:0}
 [data-aos="fade-left"],[data-aos="fade-right"]{transform:translateY(24px)}
 [data-aos="fade-left"].aos-animate,[data-aos="fade-right"].aos-animate{transform:translateY(0)}
 .breadcrumb{flex-wrap:wrap;overflow-wrap:anywhere}
 .detail-body,.lot-detail__param-value,.footer__contact-item,.contact-info__value{overflow-wrap:anywhere}
 .detail-body table{display:block;max-width:100%;overflow-x:auto}
 .detail-body img,.detail-body iframe{max-width:100%;height:auto}
 .pagination{flex-wrap:wrap}
}
@media(max-width:768px){
 :root{--section-py:34px;--section-py-sm:26px}
 .hero{height:460px;min-height:460px}
 .hero__content{padding:60px 16px 20px}
 .hero__title{font-size:30px}
 .hero__subtitle{font-size:14px;margin-bottom:24px}
 .hero__actions{flex-direction:row;justify-content:center;gap:10px}
 .hero__actions .btn{padding:12px 16px;font-size:13px}
 .hero__scroll-indicator{bottom:16px;right:20px}
 .header__inner{padding:0 16px;gap:8px}
 .header__logo{min-width:0}
 .header__logo-text{min-width:0}
 .header__logo-name{font-size:18px}
 .header__logo-sub{font-size:8px;letter-spacing:.08em}
 .section>.container>[style*="margin-bottom:48"]{margin-bottom:24px!important}
 .section-subtitle{font-size:14px;line-height:1.75}
 .grid-2{gap:22px!important}
 .grid-2>div>h3{font-size:23px!important;margin-bottom:12px!important}
 .grid-2>div>[style*="display:flex"]{justify-content:center}
 .grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
 .card__image{aspect-ratio:4/3}
 .card__body{padding:13px 10px}
 .card__tag{font-size:10px;letter-spacing:.04em;margin-bottom:6px}
 .card__title{font-size:16px;line-height:1.45;display:block;-webkit-line-clamp:unset}
 .card__desc{font-size:12px;line-height:1.65}
 .card__meta{font-size:10px;gap:5px;margin-top:8px;padding-top:8px;overflow-wrap:anywhere}
 .card__price{font-size:14px;line-height:1.6;overflow-wrap:anywhere}
 .grid-5{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
 .category-card{padding:16px 10px;display:grid;grid-template-columns:28px minmax(0,1fr);column-gap:9px;text-align:left}
 .category-card__icon{grid-row:1/3;font-size:24px;margin-bottom:0}
 .category-card__name{font-size:14px}
 .category-card__count{font-size:11px}
 .grid-5>.category-card:last-child:nth-child(odd){grid-column:1/-1}
 .news-item{grid-template-columns:88px minmax(0,1fr);gap:12px;padding:18px 0}
 .news-item__image{aspect-ratio:1;height:88px}
 .news-item__title{font-size:15px;line-height:1.6;margin-bottom:6px}
 .news-item__desc{font-size:12px;line-height:1.65}
 .cta-section{padding:36px 0}
 .cta-section__title{font-size:26px}
 .cta-section .btn--lg{width:auto}
 .footer{padding-top:32px}
 .footer__grid{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:22px 14px;text-align:left}
 .footer__grid>:first-child,.footer__grid>:nth-child(2){grid-column:1/-1}
 .footer__brand-desc{text-align:left;font-size:12px}
 .footer__social{justify-content:flex-start}
 .footer__links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
 .footer__links a{font-size:12px}
 .footer__col-title{margin-bottom:12px}
 .footer__contact-item{justify-content:flex-start;font-size:12px;gap:6px}
 .footer__qrcode{width:82px;height:82px;margin:0}
 .footer__bottom-inner{font-size:11px;padding-left:16px;padding-right:16px}
 .friend-links{gap:10px;justify-content:flex-start}
 .friend-links__label{width:auto;text-align:left}
 .page-banner{height:190px!important}
 .page-banner__title{font-size:25px;letter-spacing:.04em}
 .page-layout{padding:26px 0 36px;gap:24px}
 .sidebar__subtitle{margin-bottom:12px}
 .sidebar-nav{flex-direction:row;flex-wrap:wrap;gap:6px}
 .sidebar-nav a{padding:10px;font-size:12px;background:var(--bg-card)}
 .lot-detail{gap:22px}
 .lot-detail__params{grid-template-columns:repeat(2,minmax(0,1fr))}
 .lot-detail__name{font-size:25px;text-align:left}
 .lot-detail__estimate-value{font-size:20px;overflow-wrap:anywhere}
 .lot-detail__thumbs{flex-wrap:wrap}
 .lot-detail__thumb{width:60px;height:60px}
 .tabs{flex-wrap:wrap;max-width:100%;gap:4px}
 .tab-btn{white-space:normal;flex:1;padding:11px 8px;font-size:12px;min-width:65px}
 .detail-body{padding:24px 16px;font-size:14px}
 .detail-header{padding:24px 16px}
 .detail-header__meta{flex-direction:row;flex-wrap:wrap;gap:10px}
 .stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
 .contact-info{gap:12px}
 .contact-info__item{padding:18px}
 .form-input,.form-select,.form-textarea{min-width:0;font-size:16px;max-width:100%}
 [style*="padding:32px"]:has(>form){padding:20px 16px!important}
 .grid-2 [style*="grid-template-columns:repeat(4"]{grid-template-columns:repeat(2,minmax(0,1fr))!important;gap:10px!important}
 .search-form{flex-direction:row;flex-wrap:wrap}
 .search-form input{min-width:160px}
 .search-form button{width:auto;margin-top:0;padding:12px 20px}
}

/* Mobile inner-page gutters; homepage and desktop remain unchanged. */
@media(max-width:767px){
 .page-inner .container{padding-left:20px;padding-right:20px}
}

/* Mobile inner pages: reserve the fixed header in document flow. */
@media(max-width:1024px){
 body.page-inner{padding-top:calc(var(--header-h) + 16px)}
 .page-inner .breadcrumb{padding-top:20px}
 .page-inner .lot-detail,.page-inner .detail-header,.page-inner .search-header{padding-top:24px}
}