```css
/* ==========================================================
   原神本子 · yuanshenbenzi.org.cn
   Design System —「纸间丹青 Ink & Paper」
   Awwwards-inspired · Chinese brush-seal editorial
   ========================================================== */

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

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  overflow-x: hidden;
  background-color: #FDF8F0;
  background-image:
    radial-gradient(ellipse 55% 35% at 12% 8%, rgba(222, 75, 42, 0.045) 0%, transparent 100%),
    radial-gradient(ellipse 45% 30% at 90% 20%, rgba(22, 132, 109, 0.045) 0%, transparent 100%),
    radial-gradient(ellipse 40% 25% at 55% 95%, rgba(231, 154, 50, 0.035) 0%, transparent 100%);
  color: #2B2622;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* 光晕 · 顶部流动墨线 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  z-index: 2000;
  background: linear-gradient(90deg, #DE4B2A, #E79A32, #16846D, #DE4B2A);
  background-size: 300% 100%;
  animation: inkFlow 18s linear infinite;
  pointer-events: none;
}

@keyframes inkFlow {
  0% { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}

::selection {
  background: #DE4B2A;
  color: #FFF8F0;
}

/* 自定义滚动条 */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: #F5EDDE; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #DE4B2A, #E79A32);
  border-radius: 12px;
  border: 2px solid #F5EDDE;
}

html {
  scrollbar-color: #DE4B2A #F5EDDE;
  scrollbar-width: thin;
}

img { max-width: 100%; display: block; }
a { color: inherit; }

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

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

.section:nth-child(even) {
  background: rgba(245, 237, 221, 0.65);
}

.section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 72px;
  height: 3px;
  background: linear-gradient(90deg, transparent, #DE4B2A, transparent);
  border-radius: 3px;
  opacity: 0.35;
}

/* ---------- 固定导航 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(253, 248, 240, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(229, 220, 203, 0.8);
  box-shadow: 0 1px 12px rgba(43, 38, 34, 0.03);
}

.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: 10px;
  font-weight: 900;
  font-size: 1.3rem;
  text-decoration: none;
  color: #2B2622;
  letter-spacing: 1.5px;
  transition: opacity 0.2s;
}

.logo:hover { opacity: 0.78; }
.logo:hover .logo-icon { transform: rotate(-8deg) scale(1.05); }

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.82rem;
  background: #DE4B2A;
  color: #FFF8F0;
  border: 1.5px solid #FFF8F0;
  box-shadow: 0 0 0 1.5px #DE4B2A, 0 3px 8px rgba(222, 75, 42, 0.25);
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  font-weight: 800;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: #2B2622;
  letter-spacing: 0.6px;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.25s, border-color 0.25s;
}

.main-nav a:hover {
  color: #DE4B2A;
  border-bottom-color: #DE4B2A;
}

.nav-cta {
  padding: 9px 22px !important;
  border-radius: 30px;
  color: #FFF8F0 !important;
  font-weight: 600;
  background: #DE4B2A;
  border-bottom: none !important;
  letter-spacing: 0.8px;
  box-shadow: 0 3px 10px rgba(222, 75, 42, 0.2);
  transition: background 0.3s, transform 0.3s, box-shadow 0.3s !important;
}

.nav-cta:hover {
  background: #C43E1F;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(222, 75, 42, 0.3);
  border-bottom: none !important;
  color: #FFF8F0 !important;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1.5px solid #2B2622;
  background: transparent;
  border-radius: 8px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: background 0.25s;
}

.menu-toggle:hover { background: rgba(222, 75, 42, 0.08); }

.menu-toggle span {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: #2B2622;
  border-radius: 2px;
  transition: background 0.25s;
}

.menu-toggle span::before,
.menu-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: #2B2622;
  border-radius: 2px;
  transition: transform 0.25s, top 0.25s;
}

.menu-toggle span::before { top: -6px; }
.menu-toggle span::after { top: 6px; }

/* ---------- Hero 区域 ---------- */
.hero {
  min-height: 88vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 120px 0 64px;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  right: -120px;
  top: -120px;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(231, 154, 50, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  max-width: 680px;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  padding: 6px 18px 6px 14px;
  border-radius: 3px;
  background: #F5EDDE;
  border-left: 4px solid #DE4B2A;
  margin-bottom: 24px;
  color: #2B2622;
}

.hero-eyebrow::before {
  content: '';
  width: 7px;
  height: 7px;
  background: #DE4B2A;
  border-radius: 2px;
  display: inline-block;
  flex-shrink: 0;
}

.hero h1 {
  font-size: clamp(2.5rem, 5.5vw, 4.6rem);
  line-height: 1.08;
  margin-bottom: 24px;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: #2B2622;
}

.hero h1 strong {
  position: relative;
  display: inline-block;
  z-index: 0;
  font-weight: 900;
}

.hero h1 strong::after {
  content: '';
  position: absolute;
  z-index: -1;
  left: -2%;
  bottom: 8%;
  width: 104%;
  height: 30%;
  background: rgba(231, 154, 50, 0.38);
  border-radius: 50% 30% 40% 50% / 60% 40% 60% 40%;
  transform: rotate(-1deg);
}

.hero p {
  font-size: 1.12rem;
  opacity: 0.72;
  color: #4A443E;
  max-width: 540px;
  margin-bottom: 36px;
  line-height: 1.8;
  letter-spacing: 0.2px;
}

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

.hero-image {
  position: relative;
  border-radius: 4px;
  overflow: visible;
  background: #FFFDF8;
  padding: 12px;
  border: 1px solid #E5DCCB;
  box-shadow: 16px 16px 0 rgba(22, 132, 109, 0.07), 0 12px 32px rgba(43, 38, 34, 0.06);
  transform: rotate(2.5deg);
  transition: transform 0.4s ease;
}

.hero-image:hover { transform: rotate(0.5deg) scale(1.01); }

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: 2px;
}

.hero-image::before {
  content: '';
  position: absolute;
  top: 16px;
  left: 16px;
  width: 100%;
  height: 100%;
  border: 1.5px solid #E79A32;
  border-radius: 4px;
  z-index: -1;
  pointer-events: none;
}

.hero-image::after {
  content: '本子';
  position: absolute;
  right: -10px;
  bottom: -10px;
  width: 54px;
  height: 54px;
  background: #DE4B2A;
  color: #FFF8F0;
  font-size: 0.88rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  transform: rotate(-8deg);
  box-shadow: 0 4px 14px rgba(222, 75, 42, 0.3);
  border: 1.5px solid #FFF8F0;
  animation: sealPop 0.7s cubic-bezier(0.34, 1.56, 0.64, 1) 0.4s both;
  letter-spacing: 2px;
}

@keyframes sealPop {
  0% { transform: rotate(-8deg) scale(0); opacity: 0; }
  100% { transform: rotate(-8deg) scale(1); opacity: 1; }
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 30px;
  border-radius: 30px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  font-size: 0.95rem;
  letter-spacing: 0.4px;
}

.btn-primary {
  background: #DE4B2A;
  color: #FFF8F0;
  box-shadow: 0 4px 14px rgba(222, 75, 42, 0.2);
}

.btn-primary:hover {
  background: #C43E1F;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(222, 75, 42, 0.3);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid #16846D;
  color: #16846D;
}

.btn-outline:hover {
  background: #16846D;
  color: #FFF8F0;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(22, 132, 109, 0.18);
}

/* ---------- 标签 / 标题 ---------- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: #DE4B2A;
  margin-bottom: 16px;
}

.section-label::before {
  content: '';
  width: 10px;
  height: 10px;
  background: #DE4B2A;
  border-radius: 2px;
  flex-shrink: 0;
}

.section-label::after {
  content: '';
  width: 48px;
  height: 1.5px;
  background: linear-gradient(90deg, #DE4B2A, transparent);
}

.section-title {
  font-size: clamp(1.9rem, 3.8vw, 2.8rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 16px;
  color: #2B2622;
  letter-spacing: -0.01em;
}

.section-title strong {
  position: relative;
  z-index: 0;
  display: inline-block;
}

.section-title strong::after {
  content: '';
  position: absolute;
  z-index: -1;
  left: -2%;
  bottom: 6%;
  width: 104%;
  height: 26%;
  background: rgba(231, 154, 50, 0.36);
  border-radius: 40% 50% 45% 55% / 55% 45% 60% 40%;
}

.section-desc {
  max-width: 600px;
  opacity: 0.72;
  color: #4A443E;
  margin-bottom: 48px;
  line-height: 1.8;
  font-size: 1rem;
}

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

.category-card {
  border-radius: 8px;
  padding: 32px 28px;
  background: #FFFDF8;
  border: 1px solid #E5DCCB;
  border-top: 3px solid #DE4B2A;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.35s;
  position: relative;
}

.category-card:nth-child(3n+2) { border-top-color: #16846D; }
.category-card:nth-child(3n+3) { border-top-color: #E79A32; }

.category-card:hover {
  transform: translateY(-4px) rotate(-0.5deg);
  box-shadow: 0 12px 32px rgba(43, 38, 34, 0.07), 0 2px 8px rgba(43, 38, 34, 0.03);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.4rem;
  background: linear-gradient(135deg, #F5EDDE, #EADFC9);
  color: #2B2622;
  position: relative;
  overflow: hidden;
}

.category-card:nth-child(3n+2) .card-icon { background: linear-gradient(135deg, #E4F0EB, #CBE2D9); }
.category-card:nth-child(3n+3) .card-icon { background: linear-gradient(135deg, #F8EBD7, #F2D9B6); }

.card-icon::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 12px;
  height: 12px;
  background: #DE4B2A;
  border-radius: 4px 0 6px 0;
  opacity: 0.75;
}

.category-card h3 {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: #2B2622;
}

.category-card p {
  font-size: 0.88rem;
  color: #6B6258;
  line-height: 1.6;
  margin-bottom: 16px;
}

.card-link {
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  color: #16846D;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1.5px solid transparent;
  transition: border-color 0.2s, gap 0.3s;
}

.card-link:hover {
  border-bottom-color: #16846D;
  gap: 9px;
}

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

.feature-image {
  position: relative;
  border-radius: 8px;
  overflow: visible;
}

.feature-image::before {
  content: '';
  position: absolute;
  top: -18px;
  left: -18px;
  width: 100%;
  height: 100%;
  border: 2px solid #E79A32;
  border-radius: 10px;
  z-index: 0;
  pointer-events: none;
}

.feature-image img {
  border-radius: 8px;
  box-shadow: 0 12px 32px rgba(43, 38, 34, 0.08);
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
}

.feature-text {
  position: relative;
}

.feature-text h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 14px;
  color: #2B2622;
  line-height: 1.3;
}

.feature-text p {
  color: #4A443E;
  line-height: 1.8;
  margin-bottom: 24px;
  font-size: 1rem;
}

.feature-list {
  list-style: none;
  margin-top: 8px;
}

.feature-list li {
  padding: 7px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  color: #3D3732;
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: #DE4B2A;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(222, 75, 42, 0.1);
  font-size: 0.72rem;
  flex-shrink: 0;
}

/* ---------- 数据条 ---------- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  text-align: center;
  border-top: 2.5px solid #2B2622;
  border-bottom: 2.5px solid #2B2622;
  background: linear-gradient(180deg, rgba(255, 253, 248, 0.8), rgba(245, 237, 221, 0.5));
  border-radius: 2px;
}

.stat-item {
  padding: 36px 24px;
  border-left: 1px solid #E5DCCB;
  position: relative;
  transition: background 0.3s;
}

.stat-item:hover { background: rgba(231, 154, 50, 0.06); }
.stat-item:first-child { border-left: none; }

.stat-number {
  font-size: clamp(2rem, 3.6vw, 2.8rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: #DE4B2A;
  display: inline-block;
  position: relative;
}

.stat-number::after {
  content: '+';
  font-size: 1.4rem;
  color: #E79A32;
  font-weight: 700;
  margin-left: 2px;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.62;
  margin-top: 10px;
  letter-spacing: 2px;
  font-weight: 500;
  color: #2B2622;
}

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

.content-wall-item {
  border-radius: 3px 12px 12px 3px;
  overflow: hidden;
  background: #FFFDF8;
  border: 1px solid #E5DCCB;
  border-left: 4px solid #DE4B2A;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.35s;
}

.content-wall-item:nth-child(3n+2) { border-left-color: #16846D; }
.content-wall-item:nth-child(3n+3) { border-left-color: #E79A32; }

.content-wall-item:hover {
  transform: translateY(-5px) rotate(0.4deg);
  box-shadow: 0 16px 40px rgba(43, 38, 34, 0.08), 0 4px 12px rgba(43, 38, 34, 0.04);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 1px solid #F0EADC;
  transition: transform 0.5s ease, filter 0.5s;
}

.content-wall-item:hover img {
  transform: scale(1.04);
  filter: saturate(1.1);
}

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

.content-wall-body h3 {
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: #2B2622;
  line-height: 1.4;
}

.content-wall-body p {
  font-size: 0.85rem;
  color: #6B6258;
  line-height: 1.6;
}

.content-wall-body .meta {
  display: inline-block;
  margin-top: 14px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 1px;
  color: #DE4B2A;
  background: rgba(222, 75, 42, 0.06);
  padding: 3px 10px;
  border-radius: 4px;
}

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

.faq-item {
  border: 1px solid #E5DCCB;
  border-radius: 8px;
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  background: #FFFDF8;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.faq-item:hover { border-color: rgba(222, 75, 42, 0.35); }

.faq-item.open {
  border-color: #DE4B2A;
  box-shadow: 0 6px 20px rgba(222, 75, 42, 0.08);
}

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  color: #2B2622;
  font-size: 1rem;
  letter-spacing: 0.3px;
}

.faq-item .faq-question::after {
  content: '＋';
  font-size: 1.3rem;
  font-weight: 400;
  color: #DE4B2A;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  line-height: 1;
  flex-shrink: 0;
}

.faq-item.open .faq-question::after {
  transform: rotate(135deg);
  content: '＋';
}

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  opacity: 0.72;
  color: #4A443E;
  line-height: 1.8;
  font-size: 0.95rem;
}

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

@keyframes fadeInDown {
  0% { opacity: 0.5; transform: translateY(-4px); }
  100% { opacity: 0.72; transform: translateY(0); }
}

/* ---------- CTA 横幅 ---------- */
.cta-banner {
  padding: 72px 32px;
  text-align: center;
  border-radius: 16px;
  color: #FFF8F0;
  background: linear-gradient(120deg, #DE4B2A 0%, #E2542F 40%, #E79A32 100%);
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(222, 75, 42, 0.18);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 55%;
  height: 180%;
  background: radial-gradient(ellipse, rgba(255, 255, 255, 0.14) 0%, transparent 70%);
  transform: rotate(15deg);
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -60px;
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner h2 {
  color: #FFF8F0;
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 900;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
  position: relative;
  z-index: 2;
}

.cta-banner p {
  color: rgba(255, 248, 240, 0.88);
  max-width: 580px;
  margin: 0 auto 32px;
  font-size: 1.05rem;
  position: relative;
  z-index: 2;
}

.cta-banner .btn-primary {
  background: #FFF8F0;
  color: #DE4B2A;
  box-shadow: 0 4px 16px rgba(43, 38, 34, 0.12);
  position: relative;
  z-index: 2;
}

.cta-banner .btn-primary:hover {
  background: #F5EDDE;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(43, 38, 34, 0.16);
}

/* ---------- 页脚 ---------- */
.site-footer {
  padding: 64px 0 28px;
  background: #F5EDDE;
  position: relative;
  border-top: 1px solid #E5DCCB;
}

.site-footer::before {
  content: '';
  display: block;
  position: absolute;
  top: -1px;
  left: 0;
  width: 100%;
  height: 6px;
  background:
    radial-gradient(circle at 25% 50%, #DE4B2A 2.5px, transparent 2.5px),
    radial-gradient(circle at 40% 50%, rgba(222, 75, 42, 0.4) 2.5px, transparent 2.5px),
    radial-gradient(circle at 55% 50%, #E79A32 2.5px, transparent 2.5px),
    radial-gradient(circle at 70% 50%, #16846D 2.5px, transparent 2.5px),
    radial-gradient(circle at 85% 50%, rgba(22, 132, 109, 0.4) 2.5px, transparent 2.5px);
  background-size: 60px 6px;
  background-repeat: repeat-x;
  opacity: 0.3;
}

.site-footer .container { position: relative; }

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

.footer-brand .logo {
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: #6B6258;
  line-height: 1.7;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: #2B2622;
  letter-spacing: 1px;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul a {
  font-size: 0.88rem;
  color: #4A443E;
  text-decoration: none;
  transition: color 0.2s, padding-left 0.2s;
}

.footer-col ul a:hover {
  color: #DE4B2A;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1.5px solid rgba(43, 38, 34, 0.1);
  margin-top: 48px;
  padding-top: 22px;
  text-align: center;
  font-size: 0.85rem;
  color: #6B6258;
  letter-spacing: 0.8px;
}

/* ---------- 工具类 ---------- */
.text-accent {
  color: #DE4B2A;
}

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

.seo-description {
  max-width: 640px;
  margin: 0 auto 48px;
  opacity: 0.72;
  color: #4A443E;
  font-size: 1.05rem;
  line-height: 1.85;
  border-left: 3px solid #E79A32;
  padding-left: 22px;
  text-align: left;
}

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

/* ---------- 响应式 ---------- */
@media (max-width: 1023px) {
  .hero { padding: 100px 0 56px; }
  .feature-block { gap: 40px; }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }

  .hero {
    min-height: auto;
    padding: 88px 0 48px;
    flex-direction: column;
    gap: 48px;
    text-align: center;
  }

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

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

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

  .hero-eyebrow {
    justify-content: center;
  }

  .hero-image {
    max-width: 420px;
    margin: 0 auto;
    width: 100%;
  }

  .feature-block {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
  }

  .stat-item:nth-child(3) { border-left: none; border-top: 1.5px solid #E5DCCB; }
  .stat-item:nth-child(4) { border-left: 1px solid #E5DCCB; border-top: 1.5px solid #E5DCCB; }

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

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: rgba(253, 248, 240, 0.98);
    backdrop-filter: blur(14px);
    padding: 28px 24px;
    gap: 20px;
    border-bottom: 3px solid #DE4B2A;
    box-shadow: 0 16px 40px rgba(43, 38, 34, 0.08);
    align-items: flex-start;
  }

  .main-nav.open a {
    font-size: 1rem;
    padding: 6px 0;
    width: 100%;
  }

  .nav-cta {
    margin-top: 8px;
    text-align: center;
  }

  .section-title {
    font-size: 1.9rem;
  }
}

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

  .stats-bar {
    border: 2.5px solid #2B2622;
    border-radius: 8px;
    overflow: hidden;
  }

  .stat-item {
    border-left: none;
    border-top: 1px solid #E5DCCB;
  }

  .stat-item:first-child { border-top: none; }
  .stat-item:nth-child(3) { border-left: none; }

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

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

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

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

  .hero p {
    font-size: 1rem;
  }

  .section-label {
    letter-spacing: 2px;
  }

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