:root {
  --paper: #F5F0E6;
  --paper-deep: #ECE2D0;
  --ink: #211D18;
  --seal: #D8402F;
  --jade: #2F6B4F;
  --mustard: #E3A537;
  --cream: #FFFBF3;
  --line: rgba(33, 29, 24, 0.12);
  --shadow: rgba(33, 29, 24, 0.9);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(33, 29, 24, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(33, 29, 24, 0.03) 1px, transparent 1px);
  background-size: 80px 80px;
  color: var(--ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--seal);
  color: var(--cream);
}

::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--paper);
}
::-webkit-scrollbar-thumb {
  background: var(--jade);
  border: 2px solid var(--paper);
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-family: 'Songti SC', 'STSong', 'SimSun', serif;
}

a {
  color: inherit;
}

/* ============ 核心布局 ============ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

.section {
  padding: 100px 0;
  position: relative;
}

.section:nth-child(even) {
  background: var(--paper-deep);
}

.section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(1200px, 90%);
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--line) 0 12px, transparent 12px 24px);
}

/* ============ 导航 ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(245, 240, 230, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--Line, var(--line));
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset;
}

.site-header::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--seal) 0%, var(--seal) 120px, var(--jade) 120px, var(--jade) 240px, transparent 240px);
  opacity: 0.5;
  pointer-events: none;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--ink);
  font-family: 'Songti SC', 'STSong', serif;
  letter-spacing: 2px;
  line-height: 1;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--seal);
  color: var(--cream);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  box-shadow: 3px 3px 0 var(--ink);
  transform: rotate(-6deg);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  font-family: 'Songti SC', 'STSong', serif;
}

.logo:hover .logo-icon {
  transform: rotate(4deg) scale(1.05);
}

.logo span {
  font-size: 0.9rem;
  letter-spacing: 4px;
  font-weight: 600;
  color: var(--jade);
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink);
  padding: 8px 2px;
  letter-spacing: 1px;
  position: relative;
  transition: color 0.25s;
}

.main-nav a:not(.nav-cta)::before {
  content: '□';
  font-size: 0.5rem;
  color: var(--seal);
  position: absolute;
  top: -2px;
  left: -12px;
  opacity: 0;
  transform: translateY(4px);
  transition: 0.25s;
}

.main-nav a:not(.nav-cta):hover::before {
  opacity: 1;
  transform: translateY(0);
}

.main-nav a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--seal);
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.main-nav a:not(.nav-cta):hover::after {
  transform: scaleX(1);
  transform-origin: left center;
}

.main-nav a:hover {
  color: var(--seal);
}

.nav-cta {
  padding: 9px 22px;
  background: var(--seal);
  color: var(--cream) !important;
  font-weight: 700;
  border-radius: 0;
  box-shadow: 3px 3px 0 var(--ink);
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  font-size: 0.82rem;
  letter-spacing: 2px;
}

.nav-cta:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--ink);
  color: var(--cream) !important;
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 2px solid var(--ink);
  width: 44px;
  height: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: 2px;
  position: relative;
  z-index: 1001;
}

.menu-toggle span,
.menu-toggle span::before,
.menu-toggle span::after {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
  position: absolute;
  transition: 0.3s;
}

.menu-toggle span {
  position: relative;
}

.menu-toggle span::before {
  top: -7px;
}

.menu-toggle span::after {
  top: 7px;
}

/* ============ Hero ============ */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
  padding-top: 100px;
  padding-bottom: 40px;
  position: relative;
}

.hero::before {
  content: '料';
  position: absolute;
  right: -30px;
  top: 15%;
  font-size: 34rem;
  line-height: 1;
  font-family: 'Songti SC', 'STSong', serif;
  color: rgba(33, 29, 24, 0.035);
  z-index: 0;
  pointer-events: none;
  user-select: none;
  writing-mode: vertical-rl;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--line) 0 16px, transparent 16px 32px);
}

.hero-content {
  flex: 1;
  max-width: 620px;
  position: relative;
  z-index: 1;
  animation: heroRise 0.9s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.hero-content:only-child {
  margin: 0 auto;
  text-align: center;
}

.hero-content:only-child .hero-buttons {
  justify-content: center;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 5px;
  text-transform: uppercase;
  padding: 7px 18px;
  border: 1.5px solid rgba(216, 64, 47, 0.4);
  color: var(--seal);
  background: rgba(216, 64, 47, 0.04);
  margin-bottom: 24px;
  border-radius: 0;
  position: relative;
}

.hero-eyebrow::before,
.hero-eyebrow::after {
  content: '';
  position: absolute;
  width: 5px;
  height: 5px;
  background: var(--seal);
}

.hero-eyebrow::before {
  top: -2px;
  left: -2px;
}

.hero-eyebrow::after {
  bottom: -2px;
  right: -2px;
}

.hero h1 {
  font-size: clamp(3rem, 6vw, 5rem);
  line-height: 1.15;
  font-weight: 900;
  margin-bottom: 22px;
  letter-spacing: -0.01em;
  font-family: 'Songti SC', 'STSong', 'SimSun', serif;
}

.hero p {
  font-size: 1.05rem;
  opacity: 0.7;
  line-height: 1.85;
  max-width: 520px;
  margin-bottom: 36px;
  padding-left: 16px;
  border-left: 3px solid var(--seal);
}

.hero-content:only-child .hero p {
  margin-left: auto;
  margin-right: auto;
}

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

.hero-image {
  flex: 1;
  max-width: 480px;
  border-radius: 0;
  overflow: hidden;
  border: 2px solid var(--ink);
  box-shadow: 12px 12px 0 var(--seal);
  position: relative;
  z-index: 1;
  background: var(--cream);
}

.hero-image::before {
  content: '';
  position: absolute;
  top: -10px;
  left: -10px;
  width: 50px;
  height: 50px;
  border-top: 3px solid var(--seal);
  border-left: 3px solid var(--seal);
  z-index: 3;
}

.hero-image::after {
  content: '精选';
  position: absolute;
  top: 16px;
  right: 16px;
  width: 44px;
  height: 44px;
  background: var(--seal);
  color: var(--cream);
  border: 2px solid var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 3px;
  font-family: 'Songti SC', serif;
  transform: rotate(8deg);
  z-index: 2;
  box-shadow: 2px 2px 0 var(--ink);
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(30%) contrast(1.05);
  transition: transform 0.4s ease;
}

.hero-image:hover img {
  transform: scale(1.02);
}

@keyframes heroRise {
  from {
    opacity: 0;
    transform: translateY(36px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: 0;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  letter-spacing: 1px;
  position: relative;
}

.btn-primary {
  background: var(--seal);
  color: var(--cream);
  box-shadow: 5px 5px 0 var(--ink);
  border: 2px solid var(--ink);
}

.btn-primary:hover {
  transform: translate(-3px, -3px);
  box-shadow: 8px 8px 0 var(--ink);
}

.btn-primary:active {
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 var(--ink);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--ink);
  color: var(--ink);
  box-shadow: 5px 5px 0 transparent;
}

.btn-outline:hover {
  background: var(--mustard);
  box-shadow: 5px 5px 0 var(--ink);
  transform: translate(-2px, -2px);
}

/* ============ 标签/标题 ============ */
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 6px;
  margin-bottom: 16px;
  color: var(--seal);
  background: rgba(216, 64, 47, 0.07);
  border: 1px solid rgba(216, 64, 47, 0.3);
  padding: 6px 16px;
  font-family: 'Songti SC', serif;
  position: relative;
}

.section-label::after {
  content: '◆';
  font-size: 0.4rem;
  margin-left: 10px;
  vertical-align: middle;
  color: var(--jade);
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 16px;
  font-weight: 800;
  font-family: 'Songti SC', 'STSong', serif;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  display: block;
  width: 64px;
  height: 4px;
  background: var(--seal);
  margin-top: 12px;
  position: relative;
}

.text-center .section-title::after {
  margin-left: auto;
  margin-right: auto;
}

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 48px;
  font-size: 1rem;
  line-height: 1.8;
}

.text-center .section-desc {
  margin-left: auto;
  margin-right: auto;
}

/* ============ 卡片网格 ============ */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}

.category-card {
  border-radius: 0;
  padding: 30px 28px;
  border: 2px solid var(--ink);
  background: var(--cream);
  box-shadow: 6px 6px 0 var(--shadow);
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
}

.category-card::before {
  content: '●';
  position: absolute;
  top: 14px;
  right: 16px;
  font-size: 7px;
  color: var(--seal);
}

.category-card::after {
  content: '';
  position: absolute;
  bottom: 12px;
  right: 12px;
  width: 18px;
  height: 18px;
  border-bottom: 2px solid var(--seal);
  border-right: 2px solid var(--seal);
  opacity: 0.35;
  transition: 0.2s;
}

.category-card:hover {
  transform: translate(-4px, -4px);
  box-shadow: 10px 10px 0 var(--shadow);
  background: var(--paper);
}

.category-card:hover::after {
  opacity: 1;
  width: 24px;
  height: 24px;
}

.card-icon {
  width: 50px;
  height: 50px;
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.3rem;
  background: rgba(47, 107, 79, 0.1);
  border: 1.5px dashed var(--jade);
  color: var(--jade);
  transition: 0.3s;
}

.category-card:hover .card-icon {
  background: var(--jade);
  color: var(--cream);
  border-style: solid;
}

.card-link {
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--jade);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
  position: relative;
}

.card-link::after {
  content: '→';
  display: inline-block;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.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: 0;
  overflow: hidden;
  border: 2px solid var(--ink);
  box-shadow: 10px 10px 0 var(--jade);
  position: relative;
  background: var(--cream);
}

.feature-image::before {
  content: '▲';
  position: absolute;
  top: -14px;
  left: 24px;
  width: 30px;
  height: 30px;
  background: var(--mustard);
  border: 2px solid var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.5rem;
  color: var(--ink);
  z-index: 2;
  box-shadow: 2px 2px 0 var(--ink);
}

.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.85);
  transition: transform 0.5s ease;
}

.feature-image:hover img {
  transform: scale(1.03);
}

.feature-text {
  position: relative;
}

.feature-text h3 {
  font-size: 1.5rem;
  margin-bottom: 14px;
  color: var(--ink);
  font-weight: 800;
}

.feature-text p {
  opacity: 0.68;
  line-height: 1.85;
  margin-bottom: 20px;
  font-size: 0.98rem;
}

.feature-list {
  list-style: none;
  margin-top: 20px;
}

.feature-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  font-size: 0.95rem;
  border-bottom: 1px dashed var(--line);
}

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

.feature-list li::before {
  content: '▣';
  font-weight: 900;
  font-size: 0.85rem;
  color: var(--seal);
  flex-shrink: 0;
}

/* ============ 数据条 ============ */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  text-align: center;
  border: 2px solid var(--ink);
  background: var(--cream);
  box-shadow: 8px 8px 0 var(--shadow);
  position: relative;
  overflow: hidden;
}

.stats-bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  background: var(--seal);
  z-index: 2;
}

.stat-item {
  padding: 36px 20px;
  border: none;
  border-right: 1px solid var(--line);
  position: relative;
  background: transparent;
  transition: 0.2s;
}

.stat-item:last-child {
  border-right: none;
}

.stat-item:hover {
  background: var(--paper);
}

.stat-number {
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 900;
  color: var(--seal);
  font-family: 'Georgia', 'Times New Roman', serif;
  line-height: 1;
  margin-bottom: 8px;
  position: relative;
  display: inline-block;
}

.stat-number::after {
  content: '※';
  position: absolute;
  top: -10px;
  right: -24px;
  font-size: 0.6rem;
  color: var(--jade);
  font-family: system-ui, sans-serif;
}

.stat-label {
  font-size: 0.85rem;
  opacity: 0.6;
  margin-top: 6px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--ink);
}

/* ============ 内容墙 ============ */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.content-wall-item {
  border-radius: 0;
  overflow: hidden;
  border: 2px solid var(--ink);
  background: var(--cream);
  box-shadow: 5px 5px 0 var(--shadow);
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
}

.content-wall-item::before {
  content: '';
  position: absolute;
  top: 10px;
  left: 10px;
  width: 20px;
  height: 20px;
  border-top: 2px solid var(--mustard);
  border-left: 2px solid var(--mustard);
  z-index: 2;
  opacity: 0;
  transition: 0.3s;
}

.content-wall-item:hover {
  transform: translate(-3px, -3px);
  box-shadow: 8px 8px 0 var(--shadow);
}

.content-wall-item:hover::before {
  opacity: 1;
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  border-bottom: 2px solid var(--ink);
  filter: grayscale(100%) contrast(1.08);
  transition: filter 0.4s, transform 0.4s;
}

.content-wall-item:hover img {
  filter: grayscale(0) contrast(1);
  transform: scale(1.02);
}

.content-wall-body {
  padding: 22px 20px;
  position: relative;
}

.content-wall-body h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
  font-weight: 700;
  line-height: 1.4;
}

.content-wall-body p {
  font-size: 0.85rem;
  opacity: 0.65;
  margin-bottom: 14px;
  line-height: 1.6;
}

.content-wall-body time {
  display: inline-block;
  font-size: 0.68rem;
  letter-spacing: 2px;
  color: var(--jade);
  font-weight: 700;
  text-transform: uppercase;
  border-top: 1px dashed var(--line);
  padding-top: 12px;
  width: 100%;
}

/* ============ FAQ ============ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px 0;
}

.faq-item {
  border: 2px solid var(--ink);
  border-radius: 0;
  margin-bottom: 14px;
  overflow: hidden;
  cursor: pointer;
  background: var(--cream);
  box-shadow: 4px 4px 0 rgba(33, 29, 24, 0.8);
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.faq-item:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 rgba(33, 29, 24, 0.8);
}

.faq-item.open {
  border-color: var(--seal);
  box-shadow: 4px 4px 0 var(--seal);
}

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  letter-spacing: 0.5px;
  background: transparent;
  position: relative;
  transition: 0.2s;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.6rem;
  font-weight: 400;
  color: var(--seal);
  line-height: 1;
  flex-shrink: 0;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
  color: var(--jade);
}

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  opacity: 0.7;
  font-size: 0.92rem;
  line-height: 1.75;
  border-top: 1px dashed var(--line);
  margin-top: 0;
  padding-top: 14px;
}

.faq-item.open .faq-answer {
  display: block;
  animation: faqReveal 0.35s ease both;
}

@keyframes faqReveal {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============ CTA横幅 ============ */
.cta-banner {
  padding: 64px 48px;
  text-align: center;
  border-radius: 0;
  color: var(--cream);
  background: var(--seal);
  border: 3px solid var(--ink);
  box-shadow: 10px 10px 0 var(--shadow);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 60%;
  height: 200%;
  background: repeating-linear-gradient(
    -45deg,
    transparent 0 14px,
    rgba(255, 255, 255, 0.05) 14px 28px
  );
  pointer-events: none;
}

.cta-banner::after {
  content: '●';
  position: absolute;
  bottom: -18px;
  right: -10px;
  font-size: 10rem;
  color: rgba(255, 255, 255, 0.06);
  line-height: 1;
  pointer-events: none;
}

.cta-banner h2 {
  color: var(--cream);
  font-size: 2.2rem;
  font-weight: 900;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
  font-family: 'Songti SC', serif;
}

.cta-banner p {
  opacity: 0.8;
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
  font-size: 1.02rem;
}

.cta-banner .btn-primary {
  background: var(--cream);
  color: var(--seal);
  box-shadow: 4px 4px 0 var(--ink);
  border-color: var(--ink);
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  box-shadow: 6px 6px 0 var(--ink);
}

/* ============ 页脚 ============ */
.site-footer {
  padding: 64px 0 32px;
  background: var(--jade);
  color: rgba(251, 247, 238, 0.85);
  position: relative;
  border-top: 4px solid var(--seal);
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 0;
  width: 100%;
  height: 8px;
  background: repeating-linear-gradient(
    90deg,
    var(--seal) 0 120px,
    var(--mustard) 120px 160px,
    transparent 160px 200px
  );
  opacity: 0.8;
}

.site-footer .container {
  position: relative;
  z-index: 1;
}

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

.footer-brand {
  line-height: 1.6;
}

.footer-brand .logo {
  color: var(--cream);
  margin-bottom: 16px;
}

.footer-brand .logo-icon {
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.35);
  background: var(--seal);
}

.footer-brand p {
  font-size: 0.9rem;
  opacity: 0.6;
  max-width: 260px;
  margin-top: 12px;
  line-height: 1.8;
}

.footer-col h4 {
  font-size: 0.8rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--cream);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(251, 247, 238, 0.18);
  font-weight: 800;
  font-family: system-ui, sans-serif;
}

.footer-col a {
  display: block;
  padding: 5px 0;
  color: rgba(251, 247, 238, 0.65);
  text-decoration: none;
  font-size: 0.88rem;
  transition: 0.2s;
  position: relative;
}

.footer-col a:hover {
  color: var(--mustard);
  transform: translateX(5px);
}

.footer-col a::before {
  content: '›';
  margin-right: 8px;
  color: var(--mustard);
  opacity: 0;
  margin-left: -4px;
  transition: 0.2s;
}

.footer-col a:hover::before {
  opacity: 1;
  margin-left: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(251, 247, 238, 0.15);
  margin-top: 48px;
  padding-top: 22px;
  text-align: center;
  font-size: 0.82rem;
  opacity: 0.5;
  letter-spacing: 1px;
}

/* ============ 工具类 ============ */
.text-accent {
  color: var(--seal);
  font-family: 'Songti SC', 'STSong', serif;
  position: relative;
  display: inline-block;
  background: linear-gradient(
    to bottom,
    transparent 62%,
    rgba(216, 64, 47, 0.18) 62%
  );
  padding: 0 2px;
}

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

.seo-description {
  max-width: 620px;
  margin: 0 auto 48px;
  opacity: 0.75;
  padding: 24px 28px;
  background: rgba(255, 251, 243, 0.7);
  border-left: 4px solid var(--seal);
  font-size: 1.02rem;
  line-height: 1.85;
  box-shadow: 3px 3px 0 var(--line);
}

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

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .hero {
    flex-direction: column;
    gap: 48px;
    padding-top: 130px;
  }

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

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

  .hero::before {
    font-size: 20rem;
  }

  .feature-block {
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 70px 0;
  }

  .feature-block {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .feature-image {
    box-shadow: 6px 6px 0 var(--jade);
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    box-shadow: 5px 5px 0 var(--shadow);
  }

  .stat-item {
    border-bottom: 1px solid var(--line);
  }

  .stat-item:nth-child(2) {
    border-right: none;
  }

  .stat-item:nth-child(3) {
    border-bottom: none;
  }

  .stat-item:nth-child(4) {
    border-bottom: none;
    border-right: none;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: rgba(245, 240, 230, 0.98);
    backdrop-filter: blur(14px);
    padding: 24px;
    gap: 18px;
    border-bottom: 3px solid var(--seal);
    box-shadow: 0 12px 24px rgba(33, 29, 24, 0.12);
    align-items: flex-start;
  }

  .main-nav.open a {
    font-size: 1.05rem;
    padding: 8px 0;
    width: 100%;
  }

  .main-nav.open .nav-cta {
    width: auto;
    margin-top: 4px;
  }

  .hero {
    min-height: 70vh;
    padding-top: 120px;
  }

  .hero h1 {
    font-size: clamp(2.4rem, 9vw, 3.2rem);
  }

  .hero-image {
    box-shadow: 7px 7px 0 var(--seal);
  }

  .cta-banner {
    padding: 48px 28px;
    box-shadow: 6px 6px 0 var(--shadow);
  }

  .cta-banner h2 {
    font-size: 1.5rem;
  }

  .seo-description {
    padding: 18px;
    font-size: 0.95rem;
  }
}

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

  .stats-bar {
    gap: 0;
  }

  .stat-item {
    border-right: none;
    border-bottom: 1px solid var(--line);
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

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

  .hero::before {
    font-size: 12rem;
    right: -20px;
    opacity: 0.6;
  }

  .hero p {
    font-size: 0.98rem;
  }

  .section-title {
    font-size: 1.7rem;
  }

  .cta-banner .btn-primary {
    width: 100%;
    justify-content: center;
  }

  .nav-cta {
    display: inline-block;
    text-align: center;
  }
}