```css
/* ============================================================
   禁漫天_jm天堂网页版 ✕ jinmantian.net.cn
   Design System · 暖阳墨韵 — Warm-Sun & Ink Aesthetic
   ============================================================ */

:root {
  --paper: #faf7f0;
  --paper-2: #f3eee5;
  --paper-3: #ece5d8;
  --card: #fffdf8;
  --ink: #303536;
  --muted: #6f7a78;
  --coral: #dd5c4e;
  --coral-soft: #fae3df;
  --teal: #168f82;
  --teal-soft: #dcefee;
  --gold: #d9a13e;
  --gold-soft: #f8ecd4;
  --sage: #7a9c8d;
  --sage-soft: #e2ece6;
  --line: rgba(48, 53, 54, 0.08);
  --shadow-sm: 0 2px 10px rgba(48, 53, 54, 0.04);
  --shadow-md: 0 8px 24px rgba(48, 53, 54, 0.07);
  --shadow-lg: 0 20px 48px rgba(48, 53, 54, 0.11);
  --font-serif: 'Songti SC', 'STSong', 'SimSun', 'Noto Serif SC', serif;
  --font-sans: system-ui, -apple-system, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--teal);
  outline: none;
}

:focus-visible {
  outline: 3px solid rgba(217, 161, 62, 0.6);
  outline-offset: 2px;
  border-radius: 4px;
}

::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--paper);
}
::-webkit-scrollbar-thumb {
  background: rgba(48, 53, 54, 0.16);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(48, 53, 54, 0.28);
}

/* ---------- 核心布局 ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

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

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

/* ---------- 导航 · 浮岛式 ---------- */
.site-header {
  position: fixed;
  top: 16px;
  left: 0;
  width: 100%;
  z-index: 1000;
  pointer-events: none;
  padding: 0 16px;
}

.header-inner {
  pointer-events: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 62px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  background: rgba(250, 247, 240, 0.86);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  backdrop-filter: blur(20px) saturate(1.4);
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 18px;
  box-shadow: 0 4px 24px rgba(48, 53, 54, 0.07);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.2rem;
  text-decoration: none;
  color: var(--ink);
  font-family: var(--font-serif);
  letter-spacing: 0.08em;
  transition: 0.3s;
}

.logo:hover {
  opacity: 0.85;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  background: linear-gradient(135deg, var(--coral) 0%, var(--gold) 100%);
  color: #fff;
  font-family: var(--font-sans);
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(221, 92, 78, 0.35);
  position: relative;
  flex-shrink: 0;
}

.logo-icon::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px dashed rgba(221, 92, 78, 0.38);
  animation: slowSpin 16s linear infinite;
}

@keyframes slowSpin {
  to { transform: rotate(360deg); }
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--ink);
  opacity: 0.68;
  transition: 0.25s;
  position: relative;
  letter-spacing: 0.03em;
}

.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--coral);
  transition: 0.3s;
}

.main-nav a:hover {
  opacity: 1;
  color: var(--coral);
}

.main-nav a:hover::after {
  width: 100%;
}

.nav-cta {
  padding: 9px 24px;
  border-radius: 100px;
  background: var(--coral);
  color: #fff !important;
  font-weight: 600;
  opacity: 1 !important;
  box-shadow: 0 4px 14px rgba(221, 92, 78, 0.3);
  transition: 0.3s cubic-bezier(0.22, 1, 0.36, 1) !important;
}

.nav-cta::after {
  display: none;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(221, 92, 78, 0.42);
  color: #fff !important;
  opacity: 1 !important;
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--line);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--ink);
  transition: 0.2s;
  text-decoration: none;
  line-height: 1;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  margin: 2px 0;
  transition: 0.3s;
}

.menu-toggle:active {
  transform: scale(0.94);
}

/* ---------- Hero · 空中楼阁 ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background:
    radial-gradient(ellipse 560px 420px at 85% 22%, rgba(221, 92, 78, 0.09), transparent),
    radial-gradient(ellipse 420px 360px at 6% 74%, rgba(22, 143, 130, 0.07), transparent),
    var(--paper);
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(48, 53, 54, 0.05) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.hero::after {
  content: '禁漫天 ✕ 实为本';
  position: absolute;
  right: 28px;
  bottom: 28px;
  writing-mode: vertical-rl;
  font-family: var(--font-serif);
  font-size: 0.8rem;
  letter-spacing: 0.35em;
  color: rgba(48, 53, 54, 0.25);
  pointer-events: none;
  user-select: none;
  font-weight: 500;
}

.hero > .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  width: 100%;
}

.hero-content {
  flex: 1;
  max-width: 660px;
  position: relative;
  z-index: 2;
  animation: heroFadeUp 1s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes heroFadeUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-content::after {
  content: '禁';
  position: absolute;
  bottom: 8px;
  right: -28px;
  width: 48px;
  height: 48px;
  background: var(--coral);
  color: #fff;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(221, 92, 78, 0.38);
  transform: rotate(8deg);
  opacity: 0.95;
  pointer-events: none;
  z-index: 3;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 100px;
  background: var(--coral-soft);
  color: var(--coral);
  margin-bottom: 28px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  border: 1px solid rgba(221, 92, 78, 0.14);
}

.hero-eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--coral);
  display: inline-block;
  animation: pulseDot 2s ease-in-out infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.hero h1 {
  font-size: clamp(2.6rem, 5.8vw, 4.3rem);
  line-height: 1.12;
  margin-bottom: 26px;
  font-family: var(--font-serif);
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-rendering: optimizeLegibility;
}

.hero p {
  font-size: 1.08rem;
  opacity: 0.7;
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.85;
  font-weight: 400;
}

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

.hero-image {
  flex: 0 1 44%;
  min-width: 300px;
  border-radius: 24px;
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-lg);
  transform: rotate(1.5deg);
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.hero-image:hover {
  transform: rotate(0deg) scale(1.01);
}

.hero-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 62%, rgba(48, 53, 54, 0.08));
  pointer-events: none;
  border-radius: 24px;
}

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

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: 0.32s cubic-bezier(0.22, 1, 0.36, 1);
  position: relative;
  overflow: hidden;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.btn-primary {
  background: var(--coral);
  color: #fff;
  box-shadow: 0 6px 20px rgba(221, 92, 78, 0.34);
}

.btn-primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -120%;
  width: 60%;
  height: 100%;
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, 0.24), transparent);
  transform: skewX(-18deg);
  transition: left 0.65s ease;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(221, 92, 78, 0.44);
}

.btn-primary:hover::after {
  left: 140%;
}

.btn-primary:active {
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--teal);
  color: var(--teal);
  box-shadow: inset 0 0 0 0 rgba(22, 143, 130, 0);
}

.btn-outline::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--teal-soft);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
  z-index: -1;
  border-radius: 100px;
}

.btn-outline:hover {
  border-color: var(--teal);
  color: var(--teal);
}

.btn-outline:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* ---------- 标签 / 标题 ---------- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 16px;
  color: var(--coral);
  background: linear-gradient(120deg, var(--coral-soft) 0%, var(--gold-soft) 100%);
  padding: 6px 18px;
  border-radius: 100px;
  border: 1px solid rgba(221, 92, 78, 0.12);
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--coral);
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-bottom: 18px;
  font-family: var(--font-serif);
  font-weight: 900;
  line-height: 1.3;
  color: var(--ink);
  letter-spacing: 0.02em;
  text-rendering: optimizeLegibility;
}

.section-desc {
  max-width: 600px;
  opacity: 0.68;
  margin-bottom: 48px;
  line-height: 1.85;
  font-size: 1rem;
}

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

.category-card {
  background: var(--card);
  border-radius: 22px;
  padding: 32px 28px;
  border: 1px solid var(--line);
  transition: 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--coral), var(--gold));
  opacity: 0;
  transition: 0.4s;
}

.category-card:hover {
  transform: translateY(-7px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.category-card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 54px;
  height: 54px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.4rem;
  background: var(--coral-soft);
  color: var(--coral);
  transition: 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.category-card:hover .card-icon {
  transform: scale(1.06) rotate(-5deg);
  background: var(--coral);
  color: #fff;
  box-shadow: 0 6px 18px rgba(221, 92, 78, 0.32);
}

.category-card:nth-child(2) .card-icon {
  background: var(--teal-soft);
  color: var(--teal);
}

.category-card:nth-child(2):hover .card-icon {
  background: var(--teal);
  color: #fff;
  box-shadow: 0 6px 18px rgba(22, 143, 130, 0.32);
}

.category-card:nth-child(3) .card-icon {
  background: var(--gold-soft);
  color: var(--gold);
}

.category-card:nth-child(3):hover .card-icon {
  background: var(--gold);
  color: #fff;
  box-shadow: 0 6px 18px rgba(217, 161, 62, 0.32);
}

.category-card:nth-child(4) .card-icon {
  background: var(--sage-soft);
  color: var(--sage);
}

.category-card:nth-child(4):hover .card-icon {
  background: var(--sage);
  color: #fff;
  box-shadow: 0 6px 18px rgba(122, 156, 141, 0.32);
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: 0.3s;
  margin-top: 8px;
}

.card-link:hover {
  color: var(--coral);
  gap: 8px;
}

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

.card-link:hover::after {
  transform: translateX(4px);
}

/* ---------- 特性块 ---------- */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.feature-image {
  border-radius: 24px;
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-md);
}

.feature-image::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 24px;
  pointer-events: none;
}

.feature-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.feature-image:hover img {
  transform: scale(1.04);
}

.feature-text {
  position: relative;
}

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

.feature-text .section-title {
  margin-bottom: 16px;
}

.feature-text p {
  opacity: 0.68;
  line-height: 1.85;
  margin-bottom: 24px;
}

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

.feature-list li {
  padding: 11px 0;
  display: flex;
  align-items: center;
  gap: 14px;
  font-weight: 500;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--line);
  transition: 0.2s;
}

.feature-list li:hover {
  padding-left: 4px;
  border-bottom-color: rgba(22, 143, 130, 0.3);
}

.feature-list li::before {
  content: '✓';
  font-weight: 800;
  color: #fff;
  background: var(--teal);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.68rem;
  flex-shrink: 0;
  box-shadow: 0 2px 6px rgba(22, 143, 130, 0.3);
}

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

.stat-item {
  padding: 36px 20px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: var(--card);
  transition: 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  position: relative;
  overflow: hidden;
}

.stat-item::after {
  content: '';
  position: absolute;
  width: 86px;
  height: 86px;
  border-radius: 50%;
  background: var(--coral-soft);
  opacity: 0.55;
  top: -26px;
  right: -26px;
  transition: 0.4s;
}

.stat-item:nth-child(2)::after {
  background: var(--teal-soft);
}

.stat-item:nth-child(3)::after {
  background: var(--gold-soft);
}

.stat-item:nth-child(4)::after {
  background: var(--sage-soft);
}

.stat-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.stat-item:hover::after {
  transform: scale(1.2);
  opacity: 0.8;
}

.stat-number {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.15;
  display: inline-block;
  font-family: var(--font-serif);
  position: relative;
  z-index: 1;
}

.stat-item:first-child .stat-number { color: var(--coral); }
.stat-item:nth-child(2) .stat-number { color: var(--teal); }
.stat-item:nth-child(3) .stat-number { color: var(--gold); }
.stat-item:nth-child(4) .stat-number { color: var(--sage); }

.stat-label {
  font-size: 0.84rem;
  opacity: 0.62;
  margin-top: 8px;
  letter-spacing: 0.08em;
  position: relative;
  z-index: 1;
}

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

.content-wall-item {
  background: var(--card);
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--line);
  transition: 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.content-wall-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  display: block;
}

.content-wall-item:hover img {
  transform: scale(1.05);
}

.content-wall-body {
  padding: 22px 22px 24px;
}

.content-wall-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--ink);
  font-family: var(--font-serif);
  letter-spacing: 0.01em;
}

.content-wall-body p {
  font-size: 0.88rem;
  opacity: 0.62;
  line-height: 1.6;
}

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

.faq-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  transition: 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.faq-item:hover {
  border-color: rgba(221, 92, 78, 0.2);
  box-shadow: var(--shadow-sm);
}

.faq-item.open {
  border-color: rgba(221, 92, 78, 0.28);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  padding: 20px 24px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.95rem;
  color: var(--ink);
  letter-spacing: 0.01em;
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--coral);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  line-height: 1;
  flex-shrink: 0;
  margin-left: 16px;
}

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

.faq-answer {
  padding: 0 24px 22px;
  display: none;
  opacity: 0.72;
  font-size: 0.92rem;
  line-height: 1.75;
  border-top: 1px dashed var(--line);
  margin-top: 2px;
}

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

@keyframes faqSlide {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- CTA 横幅 ---------- */
.cta-banner {
  padding: 68px 40px;
  text-align: center;
  border-radius: 28px;
  color: #fff;
  background:
    radial-gradient(ellipse 480px 260px at 20% 0%, rgba(255, 255, 255, 0.18), transparent),
    linear-gradient(135deg, var(--coral) 0%, #e87664 45%, var(--gold) 100%);
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(221, 92, 78, 0.3);
}

.cta-banner::before {
  content: '';
  position: absolute;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.14);
  top: -100px;
  right: -60px;
}

.cta-banner::after {
  content: '';
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, 0.14);
  bottom: -70px;
  left: -40px;
}

.cta-banner h2 {
  color: #fff;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 16px;
  font-family: var(--font-serif);
  position: relative;
  z-index: 1;
  line-height: 1.35;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--coral);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
  position: relative;
  z-index: 1;
  margin-top: 24px;
}

.cta-banner .btn-primary::after {
  background: linear-gradient(105deg, transparent, rgba(221, 92, 78, 0.14), transparent);
}

.cta-banner .btn-primary:hover {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.16);
  transform: translateY(-3px);
  color: var(--coral);
}

/* ---------- 页脚 ---------- */
.site-footer {
  padding: 72px 0 28px;
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  margin-top: 40px;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand {
  max-width: 320px;
}

.footer-brand .logo {
  margin-bottom: 14px;
  font-size: 1.1rem;
}

.footer-brand .logo span {
  font-family: var(--font-sans);
}

.footer-brand p {
  font-size: 0.86rem;
  opacity: 0.62;
  line-height: 1.75;
  margin-top: 8px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-col h3,
.footer-col h4 {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 10px;
  color: var(--ink);
  font-family: var(--font-serif);
}

.footer-col a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.86rem;
  transition: 0.25s;
  padding: 4px 0;
  width: fit-content;
  position: relative;
}

.footer-col a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 0;
  height: 1px;
  background: var(--coral);
  transition: 0.3s;
}

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

.footer-col a:hover::after {
  width: 100%;
}

.footer-bottom {
  border-top: 1px solid var(--line);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.78rem;
  color: var(--muted);
  opacity: 0.68;
  letter-spacing: 0.04em;
}

.footer-bottom a {
  color: var(--muted);
  text-decoration: none;
  transition: 0.2s;
}

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

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

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.68;
  line-height: 1.8;
}

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

/* ---------- 装饰辅助 ---------- */
.section-label + .section-title {
  margin-top: 0;
}

.section-title + .section-desc {
  margin-top: -4px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .feature-block {
    gap: 40px;
  }

  .stat-number {
    font-size: 2.2rem;
  }

  .hero > .container {
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .site-header {
    top: 12px;
    padding: 0 12px;
  }

  .header-inner {
    height: 56px;
    padding: 0 18px;
    border-radius: 14px;
  }

  .logo {
    font-size: 1.05rem;
  }

  .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 0.75rem;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    width: 100%;
    background: var(--card);
    padding: 16px;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    border: 1px solid var(--line);
  }

  .main-nav li {
    width: 100%;
  }

  .main-nav a {
    display: block;
    padding: 10px 12px;
    border-radius: 10px;
    opacity: 0.8;
  }

  .main-nav a::after {
    display: none;
  }

  .main-nav a:hover {
    background: var(--paper-2);
    opacity: 1;
    color: var(--coral);
  }

  .nav-cta {
    text-align: center;
    margin-top: 8px;
    padding: 12px 20px;
  }

  .main-nav.open {
    display: flex;
  }

  .menu-toggle {
    display: inline-flex;
  }

  /* Hero */
  .hero {
    min-height: auto;
    padding: 120px 0 64px;
  }

  .hero > .container {
    flex-direction: column;
    gap: 36px;
  }

  .hero-content {
    max-width: 100%;
    flex: none;
  }

  .hero-content::after {
    right: 0;
    bottom: -20px;
    width: 40px;
    height: 40px;
    font-size: 0.9rem;
  }

  .hero h1 {
    font-size: clamp(1.9rem, 8vw, 2.8rem);
  }

  .hero p {
    font-size: 1rem;
    margin-bottom: 28px;
  }

  .hero .hero-image {
    flex: none;
    width: 100%;
    min-width: 0;
    transform: none;
  }

  .hero::after {
    display: none;
  }

  /* Layout */
  .section {
    padding: 72px 0;
  }

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

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

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

  .cta-banner {
    padding: 48px 24px;
  }
}

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

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

  .footer-brand {
    max-width: 100%;
  }

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

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

  .site-header {
    padding: 0 8px;
    top: 8px;
  }

  .header-inner {
    padding: 0 14px;
  }

  .nav-cta {
    display: inline-flex;
  }

  .seo-description {
    margin-bottom: 32px;
  }

  .cta-banner {
    padding: 40px 20px;
  }

  .stat-item {
    padding: 28px 16px;
  }

  .stat-number {
    font-size: 1.8rem;
  }
}