/* =========================================
   仙逆 · 朱砂宣纸设计系统
   ========================================= */

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

:root {
  --primary: #b54132;
  --primary-dark: #983528;
  --primary-light: #d66a58;
  --secondary: #2f6b6f;
  --secondary-dark: #245455;
  --gold: #c9a86a;
  --paper: #f8f1e7;
  --paper-2: #f0e5d6;
  --card-bg: #fffdf8;
  --ink: #3a3229;
  --muted: #8a7d6f;
  --line: #e8ddd0;
  --shadow-sm: 0 2px 12px rgba(60,45,30,0.06);
  --shadow-lg: 0 12px 32px rgba(60,45,30,0.10);
  --radius: 16px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background-color: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(ellipse at 15% 10%, rgba(201,168,106,0.10) 0%, transparent 40%),
    radial-gradient(ellipse at 85% 30%, rgba(47,107,111,0.06) 0%, transparent 35%),
    radial-gradient(ellipse at 50% 90%, rgba(181,65,50,0.04) 0%, transparent 45%);
  background-attachment: fixed;
}

::selection {
  background: var(--primary);
  color: #fff;
}

/* 核心布局 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
}

.section {
  padding: 96px 0;
  position: relative;
}

.section:nth-child(even),
.section:nth-of-type(even) {
  background: var(--paper-2);
}

/* 导航 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(248, 241, 231, 0.88);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid rgba(181, 65, 50, 0.12);
  box-shadow: 0 1px 20px rgba(60, 45, 30, 0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.3rem;
  text-decoration: none;
  color: var(--ink);
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  background: var(--primary);
  color: #fff;
  font-family: 'KaiTi', 'STKaiti', 'SimSun', serif;
  font-weight: 700;
  box-shadow: 0 3px 10px rgba(181, 65, 50, 0.3);
  transition: transform 0.3s ease;
}

.logo:hover .logo-icon {
  transform: rotate(-6deg) scale(1.05);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  color: #5a5047;
  padding: 8px 14px;
  border-radius: 40px;
  transition: all 0.25s ease;
  position: relative;
}

.main-nav a:hover {
  color: var(--primary);
  background: rgba(181, 65, 50, 0.06);
}

.nav-cta {
  padding: 10px 24px !important;
  border-radius: 60px !important;
  color: #fff !important;
  background: var(--primary);
  font-weight: 700 !important;
  box-shadow: 0 3px 12px rgba(181, 65, 50, 0.25);
  margin-left: 8px;
  transition: all 0.3s ease !important;
}

.nav-cta:hover {
  background: var(--primary-dark) !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(181, 65, 50, 0.35);
  color: #fff !important;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.6rem;
  cursor: pointer;
  color: var(--ink);
  padding: 8px;
  border-radius: 8px;
  transition: background 0.2s;
}

.menu-toggle:hover {
  background: rgba(181, 65, 50, 0.06);
}

/* Hero */
.hero {
  min-height: 82vh;
  display: flex;
  align-items: center;
  gap: 64px;
  position: relative;
  padding-top: 68px;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 85% 20%, rgba(201, 168, 106, 0.18) 0%, transparent 50%),
    radial-gradient(ellipse at 10% 80%, rgba(47, 107, 111, 0.10) 0%, transparent 45%),
    linear-gradient(135deg, var(--paper) 0%, #f4e8d8 100%);
}

.hero::before {
  content: '仙';
  position: absolute;
  right: 3%;
  top: 55%;
  transform: translateY(-55%);
  font-size: 24rem;
  font-weight: 900;
  font-family: 'KaiTi', 'STKaiti', 'SimSun', serif;
  color: rgba(181, 65, 50, 0.06);
  line-height: 1;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.hero-content {
  flex: 1.15;
  max-width: 640px;
  position: relative;
  z-index: 1;
  animation: fadeUp 0.8s ease both;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 40px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(201, 168, 106, 0.2), rgba(181, 65, 50, 0.12));
  color: var(--primary);
  letter-spacing: 2px;
  border: 1px solid rgba(181, 65, 50, 0.1);
}

.hero h1 {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: 1px;
  color: var(--ink);
}

.hero h1 .text-accent {
  color: var(--primary);
  position: relative;
  display: inline-block;
}

.hero h1 .text-accent::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 4px;
  width: 100%;
  height: 8px;
  background: linear-gradient(90deg, var(--primary), var(--gold));
  opacity: 0.18;
  border-radius: 4px;
  z-index: -1;
}

.hero p {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-image {
  flex: 1;
  max-width: 460px;
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(181, 65, 50, 0.12);
  box-shadow: var(--shadow-lg);
  background: var(--card-bg);
  animation: fadeUp 0.8s ease 0.15s both;
}

.hero-image::before {
  content: '▶';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 76px;
  height: 76px;
  background: rgba(181, 65, 50, 0.92);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  padding-left: 5px;
  z-index: 2;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
  box-shadow: 0 8px 28px rgba(181, 65, 50, 0.4);
  backdrop-filter: blur(4px);
}

.hero-image:hover::before {
  transform: translate(-50%, -50%) scale(1.08);
  background: var(--primary);
}

.hero-image::after {
  content: '';
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(201, 168, 106, 0.4);
  border-radius: calc(var(--radius) - 8px);
  pointer-events: none;
  z-index: 1;
}

.hero-image img {
  width: 100%;
  height: 100%;
  min-height: 340px;
  object-fit: cover;
  display: block;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 60px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.3px;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
  box-shadow: var(--shadow-sm);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 20px rgba(181, 65, 50, 0.28);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(181, 65, 50, 0.35);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--secondary);
  color: var(--secondary);
  box-shadow: none;
}

.btn-outline:hover {
  background: var(--secondary);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(47, 107, 111, 0.25);
}

/* 标签 / 标题 */
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--primary);
  padding: 6px 0 6px 18px;
  border-left: 3px solid var(--primary);
  margin-bottom: 16px;
  position: relative;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 900;
  margin-bottom: 14px;
  line-height: 1.2;
  letter-spacing: 0.5px;
  color: var(--ink);
}

.section-desc {
  max-width: 600px;
  color: var(--muted);
  margin-bottom: 48px;
  font-size: 1.05rem;
  line-height: 1.8;
}

/* 卡片网格 */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.category-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 32px 28px;
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--gold));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s ease;
}

.category-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 60px;
  height: 60px;
  border-radius: 50% 0 0 0;
  background: radial-gradient(circle at 100% 100%, rgba(181, 65, 50, 0.06), transparent 60%);
  transition: all 0.4s ease;
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(181, 65, 50, 0.18);
}

.category-card:hover::before {
  transform: scaleX(1);
}

.category-card:hover::after {
  width: 90px;
  height: 90px;
}

.card-icon {
  width: 54px;
  height: 54px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: #fff;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.4rem;
  box-shadow: 0 4px 14px rgba(181, 65, 50, 0.25);
  transition: transform 0.3s ease;
}

.category-card:hover .card-icon {
  transform: scale(1.08) rotate(-4deg);
}

.cards-grid .category-card:nth-child(2) .card-icon {
  background: linear-gradient(135deg, #3a8a8f, var(--secondary));
  box-shadow: 0 4px 14px rgba(47, 107, 111, 0.25);
}

.cards-grid .category-card:nth-child(3) .card-icon {
  background: linear-gradient(135deg, #d4b06a, var(--gold));
  box-shadow: 0 4px 14px rgba(201, 168, 106, 0.3);
}

.cards-grid .category-card:nth-child(4) .card-icon {
  background: linear-gradient(135deg, #6b7a99, #46567a);
  box-shadow: 0 4px 14px rgba(70, 86, 122, 0.3);
}

.card-link {
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.3s ease;
}

.card-link::after {
  content: '→';
  transition: transform 0.3s ease;
}

.card-link:hover {
  gap: 0;
}

.card-link:hover::after {
  transform: translateX(6px);
}

/* 特性块 */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.feature-image {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
  position: relative;
}

.feature-image::after {
  content: '';
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(201, 168, 106, 0.35);
  border-radius: calc(var(--radius) - 8px);
  pointer-events: none;
}

.feature-image img {
  width: 100%;
  height: auto;
  display: block;
}

.feature-text {
  padding: 24px 0;
}

.feature-text .section-label {
  margin-bottom: 12px;
}

.feature-list {
  list-style: none;
  margin-top: 24px;
}

.feature-list li {
  padding: 14px 0;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 1.05rem;
  border-bottom: 1px dashed var(--line);
  transition: transform 0.25s ease;
}

.feature-list li:last-child {
  border-bottom: none;
}

.feature-list li:hover {
  transform: translateX(6px);
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: var(--secondary);
  background: rgba(47, 107, 111, 0.12);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
  transition: all 0.25s ease;
}

.feature-list li:hover::before {
  background: var(--secondary);
  color: #fff;
  transform: scale(1.1);
}

/* 数据条 */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  background: var(--card-bg);
  padding: 36px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  transition: all 0.35s ease;
}

.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--gold));
  transition: width 0.4s ease;
}

.stat-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-sm);
  border-color: rgba(181, 65, 50, 0.15);
}

.stat-item:hover::after {
  width: 55%;
}

.stat-number {
  font-size: 2.7rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  position: relative;
}

.stat-number::first-letter {
  font-size: 0.6em;
  vertical-align: super;
  margin-right: 2px;
}

.stat-label {
  font-size: 0.92rem;
  color: var(--muted);
  margin-top: 8px;
  font-weight: 500;
}

/* 内容墙 */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.content-wall-item {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
  position: relative;
}

.content-wall-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--gold));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s ease;
  z-index: 2;
}

.content-wall-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(181, 65, 50, 0.18);
}

.content-wall-item:hover::before {
  transform: scaleX(1);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.content-wall-item:hover img {
  transform: scale(1.04);
}

.content-wall-body {
  padding: 22px 22px 26px;
}

.content-wall-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--ink);
}

.content-wall-body p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: rgba(181, 65, 50, 0.2);
}

.faq-item.open {
  border-color: rgba(181, 65, 50, 0.2);
  box-shadow: var(--shadow-sm);
}

.faq-item .faq-question {
  padding: 22px 24px;
  font-weight: 700;
  font-size: 1.02rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  color: var(--ink);
  transition: color 0.2s;
}

.faq-item .faq-question:hover {
  color: var(--primary);
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--primary);
  transition: transform 0.3s ease;
  line-height: 1;
}

.faq-item.open .faq-question::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-item .faq-answer {
  padding: 0 24px 22px;
  display: none;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* CTA 横幅 */
.cta-banner {
  padding: 84px 48px;
  text-align: center;
  border-radius: 24px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary) 0%, #a4372a 60%, var(--primary-dark) 100%);
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(181, 65, 50, 0.35);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.07);
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -40px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(201, 168, 106, 0.18);
}

.cta-banner h2 {
  color: #fff;
  font-size: 2.2rem;
  font-weight: 900;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.8);
  max-width: 520px;
  margin: 0 auto 32px;
  font-size: 1.05rem;
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
  position: relative;
  z-index: 1;
  font-weight: 800;
}

.cta-banner .btn-primary:hover {
  background: var(--paper);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* 页脚 */
.site-footer {
  padding: 80px 0 32px;
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--gold), var(--primary), var(--secondary), transparent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.footer-brand .logo-icon {
  width: 34px;
  height: 34px;
  font-size: 1rem;
}

.footer-brand-text p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
  margin-top: 6px;
}

.footer-col h4 {
  font-size: 0.88rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--ink);
  letter-spacing: 2px;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.footer-col a {
  display: block;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  padding: 5px 0;
  transition: all 0.25s ease;
}

.footer-col a:hover {
  color: var(--primary);
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid var(--line);
  margin-top: 48px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
}

.footer-bottom a {
  color: var(--primary);
  text-decoration: none;
}

/* 工具类 */
.text-accent {
  color: var(--primary);
}

.text-center {
  text-align: center;
}

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.mt-0 {
  margin-top: 0;
}

.mb-0 {
  margin-bottom: 0;
}

/* ⚠️ 响应式 */
@media (max-width: 992px) {
  .hero {
    gap: 32px;
  }
  .hero h1 {
    font-size: 2.6rem;
  }
  .hero::before {
    font-size: 16rem;
  }
  .feature-block {
    gap: 40px;
  }
  .footer-grid {
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .feature-block {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: var(--paper);
    padding: 24px;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 8px 30px rgba(60, 45, 30, 0.1);
    gap: 4px;
    align-items: flex-start;
  }

  .main-nav.open a {
    width: 100%;
    padding: 12px 16px;
  }

  .main-nav.open .nav-cta {
    margin-left: 0;
    margin-top: 8px;
    text-align: center;
  }

  .hero {
    flex-direction: column;
    padding: 100px 0 60px;
    gap: 24px;
  }

  .hero-content {
    max-width: 100%;
    text-align: left;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero::before {
    font-size: 12rem;
    opacity: 0.5;
    right: 0;
  }

  .hero-image {
    max-width: 480px;
    width: 100%;
  }

  .section {
    padding: 64px 0;
  }

  .section-title {
    font-size: 1.8rem;
  }

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

  .content-wall-item img {
    height: 180px;
  }

  .cta-banner {
    padding: 56px 32px;
  }

  .cta-banner h2 {
    font-size: 1.8rem;
  }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }

  .content-wall {
    grid-template-columns: 1fr;
  }

  .content-wall-item img {
    height: 200px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }

  .hero h1 {
    font-size: 1.9rem;
  }

  .hero::before {
    font-size: 7rem;
    opacity: 0.35;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .cta-banner {
    padding: 40px 24px;
    border-radius: 16px;
  }

  .site-footer {
    padding-top: 48px;
  }

  .stat-item {
    padding: 24px 16px;
  }

  .stat-number {
    font-size: 2rem;
  }

  .feature-block {
    gap: 24px;
  }
}

/* 滚动条装饰 */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--paper);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--gold), var(--primary));
  border-radius: 8px;
  border: 2px solid var(--paper);
}

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