/* ========================================
   墨研文化 - 本地书法综合服务平台
   共享样式表
   ======================================== */

/* --- CSS Variables --- */
:root {
  --color-ink: #1a1a2e;
  --color-vermillion: #c0392b;
  --color-vermillion-light: #e74c3c;
  --color-paper: #faf8f3;
  --color-silk: #f0ece4;
  --color-gold: #b8860b;
  --color-gold-light: #d4a843;
  --color-text: #3d3d3d;
  --color-text-light: #7a7a7a;
  --color-border: #e0dbd2;
  --color-white: #ffffff;

  --font-serif: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;

  --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
  --shadow-md: 0 4px 16px rgba(26, 26, 46, 0.1);
  --shadow-lg: 0 8px 32px rgba(26, 26, 46, 0.12);

  --radius: 8px;
  --radius-lg: 12px;

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  --container-width: 1200px;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-paper);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

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

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

/* --- Utility --- */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

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

.section-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-ink);
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--color-text-light);
  text-align: center;
  margin-bottom: 48px;
}

.section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-vermillion), var(--color-gold));
  margin: 16px auto 0;
  border-radius: 2px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius);
  transition: var(--transition);
  letter-spacing: 1px;
  gap: 6px;
}

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

.btn-primary:hover {
  background: var(--color-vermillion-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(192, 57, 43, 0.3);
}

.btn-outline {
  border: 1.5px solid var(--color-ink);
  color: var(--color-ink);
}

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

.btn-gold {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-light));
  color: var(--color-white);
}

.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(184, 134, 11, 0.3);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

/* --- Header / Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(250, 248, 243, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-ink);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--color-ink);
  color: var(--color-paper);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  font-size: 1.2rem;
  font-family: var(--font-serif);
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav a {
  padding: 8px 16px;
  font-size: 0.9rem;
  color: var(--color-text);
  border-radius: var(--radius);
  position: relative;
}

.nav a:hover,
.nav a.active {
  color: var(--color-vermillion);
  background: rgba(192, 57, 43, 0.05);
}

.nav-auth {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 16px;
  padding-left: 16px;
  border-left: 1px solid var(--color-border);
}

.nav-auth a {
  padding: 6px 14px;
  font-size: 0.85rem;
}

.nav-auth .btn-primary {
  padding: 6px 16px;
  font-size: 0.85rem;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
  transition: var(--transition);
}

/* --- Hero / Banner --- */
.hero {
  margin-top: var(--header-height);
  position: relative;
  overflow: hidden;
  background: var(--color-ink);
}

.hero-slider {
  position: relative;
  height: 520px;
}

.hero-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.8s ease;
}

.hero-slide.active {
  opacity: 1;
}

.hero-slide::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 26, 46, 0.15), rgba(26, 26, 46, 0.05));
  z-index: 1;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 26, 46, 0.1), rgba(26, 26, 46, 0.02));
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--color-paper);
  max-width: 700px;
  padding: 0 24px;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.5);
}

.hero-content h1 {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 3px;
  line-height: 1.3;
}

.hero-content p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 32px;
  line-height: 1.8;
}

.hero-dots {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 3;
}

.hero-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(250, 248, 243, 0.4);
  cursor: pointer;
  transition: var(--transition);
}

.hero-dot.active {
  background: var(--color-paper);
  transform: scale(1.2);
}

/* --- Cards --- */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid var(--color-border);
}

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

.card-img {
  width: 100%;
  height: 200px;
  background-size: cover;
  background-position: center;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-img::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 26, 46, 0.3), rgba(26, 26, 46, 0.1));
}

.card-img-char {
  position: relative;
  z-index: 1;
  font-family: var(--font-serif);
  font-size: 3.5rem;
  color: var(--color-paper);
  text-shadow: 0 2px 12px rgba(26, 26, 46, 0.4);
  opacity: 0.9;
}

.card-body {
  padding: 20px;
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.card-desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 12px;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.card-tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.75rem;
  border-radius: 4px;
  background: rgba(192, 57, 43, 0.08);
  color: var(--color-vermillion);
}

.card-tag.gold {
  background: rgba(184, 134, 11, 0.1);
  color: var(--color-gold);
}

/* --- Grid --- */
.grid {
  display: grid;
  gap: 24px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* --- Rating Stars --- */
.rating {
  display: flex;
  align-items: center;
  gap: 2px;
  color: var(--color-gold);
  font-size: 0.9rem;
}

/* --- Badge --- */
.badge {
  display: inline-block;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 4px;
}

.badge-hot {
  background: var(--color-vermillion);
  color: var(--color-white);
}

.badge-new {
  background: var(--color-gold);
  color: var(--color-white);
}

.badge-sale {
  background: #27ae60;
  color: var(--color-white);
}

/* --- Footer --- */
.footer {
  background: var(--color-ink);
  color: rgba(250, 248, 243, 0.7);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(250, 248, 243, 0.1);
}

.footer-brand {
  font-family: var(--font-serif);
}

.footer-brand h3 {
  font-size: 1.3rem;
  color: var(--color-paper);
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 8px;
}

.footer-col h4 {
  font-size: 1rem;
  color: var(--color-paper);
  margin-bottom: 16px;
  font-weight: 600;
}

.footer-col a {
  display: block;
  font-size: 0.9rem;
  padding: 4px 0;
  color: rgba(250, 248, 243, 0.6);
}

.footer-col a:hover {
  color: var(--color-paper);
}

.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: rgba(250, 248, 243, 0.4);
}

.footer-bottom a {
  color: rgba(250, 248, 243, 0.5);
}

.footer-bottom a:hover {
  color: var(--color-paper);
}

/* --- Page Header (inner pages) --- */
.page-header {
  margin-top: var(--header-height);
  background: linear-gradient(135deg, var(--color-ink) 0%, #2d2d4e 100%);
  padding: 60px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='strict'%3E%3Cg fill='%23faf8f3' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.page-header h1 {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  color: var(--color-paper);
  margin-bottom: 8px;
  position: relative;
  letter-spacing: 3px;
}

.page-header p {
  font-size: 1rem;
  color: rgba(250, 248, 243, 0.7);
  position: relative;
}

/* --- Breadcrumb --- */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

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

.breadcrumb span {
  margin: 0 8px;
  opacity: 0.5;
}

/* --- Filter / Search Bar --- */
.filter-bar {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 32px;
  border: 1px solid var(--color-border);
}

.filter-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-silk);
  flex-wrap: wrap;
}

.filter-row:last-child {
  border-bottom: none;
}

.filter-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-ink);
  min-width: 80px;
  flex-shrink: 0;
}

.filter-options {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-option {
  padding: 6px 16px;
  font-size: 0.85rem;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
  color: var(--color-text);
  background: var(--color-silk);
}

.filter-option:hover,
.filter-option.active {
  background: var(--color-vermillion);
  color: var(--color-white);
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--color-silk);
  border-radius: var(--radius);
  padding: 0 16px;
  flex: 1;
  max-width: 400px;
}

.search-box input {
  border: none;
  background: none;
  padding: 12px 8px;
  flex: 1;
  font-size: 0.9rem;
  outline: none;
}

.search-box button {
  padding: 8px;
  color: var(--color-text-light);
}

.search-box button:hover {
  color: var(--color-vermillion);
}

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

.pricing-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  border: 2px solid var(--color-border);
  transition: var(--transition);
  position: relative;
}

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

.pricing-card.featured {
  border-color: var(--color-vermillion);
}

.pricing-card.featured::before {
  content: '推荐';
  position: absolute;
  top: -1px;
  right: 24px;
  background: var(--color-vermillion);
  color: var(--color-white);
  padding: 4px 12px;
  font-size: 0.75rem;
  border-radius: 0 0 6px 6px;
}

.pricing-name {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.pricing-price {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-vermillion);
  margin-bottom: 4px;
}

.pricing-price small {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text-light);
}

.pricing-desc {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

.pricing-features {
  text-align: left;
  margin-bottom: 28px;
}

.pricing-features li {
  padding: 8px 0;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text);
}

.pricing-features li::before {
  content: '\2713';
  color: var(--color-vermillion);
  font-weight: 700;
  flex-shrink: 0;
}

/* --- Steps / Process --- */
.steps {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 32px;
  left: 60px;
  right: 60px;
  height: 2px;
  background: var(--color-border);
}

.step {
  text-align: center;
  position: relative;
  flex: 1;
}

.step-number {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-white);
  border: 2px solid var(--color-vermillion);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-vermillion);
  position: relative;
  z-index: 1;
}

.step-title {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-ink);
  margin-bottom: 6px;
}

.step-desc {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

/* --- News List --- */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.news-item {
  display: flex;
  gap: 20px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.news-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.news-item-img {
  width: 240px;
  min-height: 160px;
  background-size: cover;
  background-position: center;
  background-color: var(--color-silk);
  flex-shrink: 0;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.news-item-img::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 26, 46, 0.2), rgba(26, 26, 46, 0.05));
}

.news-item-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.news-item-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.news-item-excerpt {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 12px;
}

.news-item-meta {
  font-size: 0.8rem;
  color: var(--color-text-light);
  display: flex;
  gap: 16px;
}

/* --- Sidebar --- */
.page-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
}

.sidebar {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  align-self: start;
}

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

.sidebar-nav a {
  display: block;
  padding: 14px 20px;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--color-silk);
  transition: var(--transition);
}

.sidebar-nav a:last-child {
  border-bottom: none;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
  background: rgba(192, 57, 43, 0.05);
  color: var(--color-vermillion);
}

/* --- Product Card --- */
.product-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.product-img {
  width: 100%;
  height: 220px;
  background-size: cover;
  background-position: center;
  background-color: var(--color-silk);
  position: relative;
}

.product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
}

.product-body {
  padding: 16px;
}

.product-name {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-price {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-vermillion);
}

.product-price .original {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--color-text-light);
  text-decoration: line-through;
  margin-left: 8px;
}

.product-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 0.8rem;
  color: var(--color-text-light);
}

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

.stat-item {
  text-align: center;
  padding: 32px 16px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-vermillion);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-number span {
  font-size: 1rem;
  color: var(--color-text-light);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* --- Service Card --- */
.service-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  border: 1px solid var(--color-border);
  transition: var(--transition);
  text-align: center;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.service-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: rgba(192, 57, 43, 0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}

.service-card h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* --- FAQ / Accordion --- */
.accordion {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.accordion-item {
  background: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.accordion-header {
  padding: 16px 20px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
}

.accordion-header:hover {
  color: var(--color-vermillion);
}

.accordion-header::after {
  content: '+';
  font-size: 1.2rem;
  transition: var(--transition);
}

.accordion-item.open .accordion-header::after {
  content: '-';
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.accordion-body-inner {
  padding: 0 20px 16px;
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* --- Floating CTA --- */
.floating-cta {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.floating-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  cursor: pointer;
}

.floating-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.floating-btn.phone {
  background: var(--color-vermillion);
  color: var(--color-white);
}

.floating-btn.top {
  background: var(--color-white);
  color: var(--color-ink);
  border: 1px solid var(--color-border);
  opacity: 0;
  pointer-events: none;
}

.floating-btn.top.visible {
  opacity: 1;
  pointer-events: auto;
}

/* --- Scroll Animation --- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* --- Ink decoration --- */
.ink-decoration {
  position: relative;
}

.ink-decoration::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -20px;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(26, 26, 46, 0.03) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

/* --- Guide / Help Content --- */
.guide-content {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--color-border);
}

.guide-content h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-ink);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-silk);
}

.guide-content h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--color-ink);
  margin: 24px 0 12px;
}

.guide-content p {
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 12px;
}

.guide-content ul,
.guide-content ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.guide-content li {
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 6px;
  list-style: disc;
}

.guide-content ol li {
  list-style: decimal;
}

/* --- About page --- */
.about-hero {
  text-align: center;
  padding: 40px 0;
}

.about-hero p {
  max-width: 700px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 2;
  color: var(--color-text);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.team-card {
  text-align: center;
  padding: 32px 24px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-silk);
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.team-card h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.team-card .role {
  font-size: 0.85rem;
  color: var(--color-vermillion);
  margin-bottom: 12px;
}

.team-card p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

.partner-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
}

.partner-item {
  width: 140px;
  height: 70px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
  transition: var(--transition);
}

.partner-item:hover {
  border-color: var(--color-vermillion);
  color: var(--color-vermillion);
}

/* --- Contact Info --- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.contact-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--color-border);
}

.contact-card h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--color-ink);
  margin-bottom: 16px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  font-size: 0.9rem;
}

.contact-item .icon {
  width: 20px;
  text-align: center;
  color: var(--color-vermillion);
  flex-shrink: 0;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .page-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}

@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-paper);
    flex-direction: column;
    padding: 24px;
    gap: 4px;
    transform: translateX(100%);
    transition: var(--transition);
    overflow-y: auto;
  }

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

  .nav a {
    padding: 14px 16px;
    font-size: 1rem;
    width: 100%;
  }

  .nav-auth {
    margin-left: 0;
    padding-left: 0;
    border-left: none;
    border-top: 1px solid var(--color-border);
    padding-top: 16px;
    margin-top: 12px;
    width: 100%;
    justify-content: center;
  }

  .hero-slider { height: 380px; }
  .hero-content h1 { font-size: 1.8rem; }
  .hero-content p { font-size: 0.95rem; }

  .section { padding: 48px 0; }
  .section-title { font-size: 1.6rem; }

  .grid-2, .grid-3 { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }

  .steps { flex-direction: column; align-items: center; }
  .steps::before { display: none; }

  .news-item { flex-direction: column; }
  .news-item-img { width: 100%; min-height: 180px; }

  .contact-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }

  .page-header h1 { font-size: 1.6rem; }

  .guide-content { padding: 24px; }

  .floating-cta { bottom: 20px; right: 20px; }
}

@media (max-width: 480px) {
  .stats { grid-template-columns: 1fr; }
  .hero-slider { height: 320px; }
  .hero-content h1 { font-size: 1.5rem; }
}

/* ================ 商品详情页 ================ */
.goods-detail-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  padding: 40px 0;
}

.goods-gallery {
  position: relative;
}

.goods-main-img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: 8px;
  background: var(--bg-warm);
}

.goods-thumbs {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.goods-thumbs img {
  width: 72px;
  height: 72px;
  object-fit: cover;
  border-radius: 6px;
  cursor: pointer;
  border: 2px solid transparent;
  background: var(--bg-warm);
}

.goods-thumbs img.active {
  border-color: var(--color-primary);
}

.goods-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-text);
  margin-bottom: 16px;
  line-height: 1.4;
}

.goods-meta {
  display: flex;
  gap: 20px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.goods-meta span {
  font-size: 0.9rem;
  color: var(--color-muted);
}

.goods-price-box {
  background: var(--bg-warm);
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.goods-price-current {
  font-size: 2rem;
  color: var(--color-accent);
  font-weight: 700;
}

.goods-price-original {
  font-size: 1rem;
  color: var(--color-muted);
  text-decoration: line-through;
  margin-left: 12px;
  font-weight: 400;
}

.goods-sku {
  margin-bottom: 24px;
}

.goods-sku-label {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-bottom: 8px;
}

.goods-sku-options {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.goods-sku-options .sku-btn {
  padding: 8px 20px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.goods-sku-options .sku-btn.active {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(192,57,43,0.05);
}

.goods-qty {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.goods-qty input {
  width: 60px;
  height: 38px;
  text-align: center;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 1rem;
}

.goods-actions {
  display: flex;
  gap: 12px;
}

.goods-actions .btn {
  flex: 1;
  padding: 14px 0;
  text-align: center;
}

.goods-desc {
  margin-top: 60px;
  padding: 30px;
  background: var(--bg-warm);
  border-radius: 8px;
  line-height: 1.8;
}

.goods-desc h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

@media (max-width: 768px) {
  .goods-detail-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .goods-main-img { height: 280px; }
  .goods-actions { flex-direction: column; }
}