/* ============ 基础重置 ============ */
:root {
  --bg: #FBF7F0;
  --bg-alt: #F5EEE0;
  --ink: #2D2A26;
  --primary: #E85D3F;
  --secondary: #3E8E7E;
  --accent: #F5C542;
  --card: #FFFFFF;
}

*, *::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(--bg);
  background-image: radial-gradient(rgba(45, 42, 38, 0.075) 1px, transparent 1px);
  background-size: 16px 16px;
  color: var(--ink);
  line-height: 1.6;
}

ul, ol {
  list-style: none;
}

a {
  text-decoration: none;
  color: inherit;
}

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

button {
  font-family: inherit;
}

h1, h2, h3, h4 {
  line-height: 1.25;
}

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

.section {
  padding: 80px 0;
  position: relative;
}

.section:nth-child(even) {
  background-color: var(--bg-alt);
  background-image: radial-gradient(rgba(45, 42, 38, 0.055) 1px, transparent 1px);
  background-size: 16px 16px;
}

/* ============ 导航 ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(251, 247, 240, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 2px solid var(--ink);
}

.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: 900;
  font-size: 1.28rem;
  text-decoration: none;
  color: var(--ink);
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 2px solid var(--ink);
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 900;
  box-shadow: 2px 2px 0 var(--ink);
  transform: rotate(-4deg);
}

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

.main-nav a {
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ink);
  transition: color 0.2s;
  position: relative;
  padding: 4px 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.25s;
}

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

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

.main-nav .nav-cta {
  padding: 10px 22px;
  border-radius: 6px;
  background: var(--primary);
  border: 2px solid var(--ink);
  color: #fff !important;
  font-weight: 800;
  box-shadow: 3px 3px 0 var(--ink);
  transition: box-shadow 0.15s, transform 0.15s;
}

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

.main-nav .nav-cta:hover {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--ink);
  color: #fff !important;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 2px solid var(--ink);
  border-radius: 6px;
  background: #fff;
  box-shadow: 2px 2px 0 var(--ink);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
}

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

/* ============ Hero ============ */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 15%;
  right: -120px;
  width: 600px;
  height: 600px;
  background: repeating-conic-gradient(
    from 45deg,
    rgba(232, 93, 63, 0.12) 0deg 4deg,
    transparent 4deg 20deg
  );
  border-radius: 50%;
  z-index: -1;
  pointer-events: none;
}

.hero::after {
  content: '漫';
  position: absolute;
  bottom: -40px;
  right: 3%;
  font-size: 15rem;
  font-weight: 900;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 2px rgba(45, 42, 38, 0.05);
  z-index: -1;
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 64px;
  align-items: center;
  width: 100%;
}

.hero-content {
  max-width: 720px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 900;
  padding: 6px 16px;
  border-radius: 4px;
  background: var(--primary);
  color: #fff;
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  margin-bottom: 18px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(2.4rem, 4.8vw, 3.6rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -1px;
  margin-bottom: 20px;
  position: relative;
  display: inline-block;
}

.hero h1::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 0;
  width: 100%;
  height: 14px;
  background: var(--accent);
  border-radius: 2px;
  z-index: -1;
}

.hero p {
  font-size: 1.08rem;
  opacity: 0.62;
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-image {
  border-radius: 8px;
  border: 3px solid var(--ink);
  box-shadow: 10px 10px 0 var(--ink);
  transform: rotate(2.5deg);
  position: relative;
  overflow: visible;
}

.hero-image::before {
  content: '一格一世界 ✦';
  position: absolute;
  top: -18px;
  left: -18px;
  background: var(--accent);
  border: 2px solid var(--ink);
  border-radius: 6px;
  padding: 6px 14px;
  font-weight: 900;
  font-size: 0.85rem;
  box-shadow: 3px 3px 0 var(--ink);
  z-index: 2;
  transform: rotate(-4deg);
  white-space: nowrap;
}

.hero-image::after {
  content: '';
  position: absolute;
  bottom: -14px;
  right: -14px;
  width: 36px;
  height: 36px;
  background: var(--primary);
  border: 2px solid var(--ink);
  border-radius: 50%;
  z-index: 2;
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: 4px;
  display: block;
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 6px;
  font-weight: 800;
  font-size: 0.95rem;
  cursor: pointer;
  border: 2px solid var(--ink);
  text-decoration: none;
  transition: box-shadow 0.15s, transform 0.15s;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 4px 4px 0 var(--ink);
}

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

.btn-outline {
  background: transparent;
  border: 2px solid var(--ink);
  color: var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
}

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

/* ============ 标签 / 标题 ============ */
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 3px;
  margin-bottom: 12px;
  color: var(--primary);
  text-transform: uppercase;
}

.section-label::before {
  content: '/// ';
  color: var(--secondary);
}

.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  font-weight: 900;
  letter-spacing: -0.5px;
  margin-bottom: 14px;
  position: relative;
  padding-left: 18px;
}

.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 32px;
  background: var(--primary);
  border: 2px solid var(--ink);
  border-radius: 4px;
}

.section-desc {
  max-width: 600px;
  opacity: 0.62;
  margin-bottom: 40px;
  font-size: 1.02rem;
  line-height: 1.7;
}

/* ============ 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: 28px;
  border: 2px solid var(--ink);
  background: var(--card);
  box-shadow: 5px 5px 0 var(--ink);
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
}

.category-card:nth-child(3n+1) {
  transform: rotate(-0.6deg);
}

.category-card:nth-child(3n+2) {
  transform: rotate(0.5deg);
}

.category-card:nth-child(3n+3) {
  transform: rotate(-0.3deg);
}

.category-card:hover {
  transform: translate(-2px, -2px) rotate(0deg);
  box-shadow: 7px 7px 0 var(--primary);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background: var(--accent);
  border: 2px solid var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.3rem;
  box-shadow: 3px 3px 0 var(--ink);
}

.card-link {
  font-weight: 800;
  font-size: 0.85rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  color: var(--primary);
}

.card-link::after {
  content: '→';
  transition: transform 0.2s;
}

.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: 8px;
  border: 3px solid var(--ink);
  box-shadow: 8px 8px 0 var(--secondary);
  overflow: hidden;
  position: relative;
}

.feature-image::after {
  content: '';
  position: absolute;
  top: -12px;
  right: -12px;
  width: 40px;
  height: 40px;
  background: var(--accent);
  border: 2px solid var(--ink);
  border-radius: 50%;
}

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

.feature-text h2,
.feature-text h3 {
  font-size: 1.9rem;
  font-weight: 900;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

.feature-text p {
  opacity: 0.65;
  line-height: 1.7;
  margin-bottom: 20px;
}

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

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.feature-list li::before {
  content: '✓';
  font-weight: 900;
  color: var(--primary);
  background: var(--accent);
  width: 24px;
  height: 24px;
  border: 1.5px solid var(--ink);
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  flex-shrink: 0;
}

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

.stat-item {
  padding: 28px 20px;
  border-radius: 8px;
  border: 2px solid var(--ink);
  background: var(--card);
  box-shadow: 4px 4px 0 var(--ink);
  position: relative;
}

.stat-item:nth-child(2n) {
  transform: rotate(0.8deg);
}

.stat-item:nth-child(2n+1) {
  transform: rotate(-0.5deg);
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.88rem;
  opacity: 0.6;
  margin-top: 6px;
  font-weight: 600;
}

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

.content-wall-item {
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid var(--ink);
  background: var(--card);
  box-shadow: 4px 4px 0 var(--ink);
  transition: transform 0.2s, box-shadow 0.2s;
}

.content-wall-item:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--primary);
}

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

.content-wall-item:hover img {
  transform: scale(1.03);
}

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

.content-wall-body h3 {
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.content-wall-body p {
  font-size: 0.88rem;
  opacity: 0.6;
  line-height: 1.5;
}

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

.faq-item {
  border: 2px solid var(--ink);
  border-radius: 8px;
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--card);
  box-shadow: 3px 3px 0 var(--ink);
  cursor: pointer;
  transition: box-shadow 0.2s, transform 0.2s;
}

.faq-item:hover {
  box-shadow: 5px 5px 0 var(--ink);
  transform: translate(-1px, -1px);
}

.faq-item.open {
  box-shadow: 5px 5px 0 var(--primary);
  transform: translate(-1px, -1px);
}

.faq-item .faq-question {
  padding: 18px 20px;
  font-weight: 800;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
  transition: transform 0.2s;
  flex-shrink: 0;
}

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

.faq-item .faq-answer {
  padding: 0 20px 18px;
  display: none;
  opacity: 0.7;
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.open .faq-answer {
  display: block;
  opacity: 0.75;
}

/* ============ CTA 横幅 ============ */
.cta-banner {
  padding: 56px 24px;
  text-align: center;
  border-radius: 8px;
  background: var(--accent);
  border: 3px solid var(--ink);
  box-shadow: 8px 8px 0 var(--ink);
  color: var(--ink);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '✦';
  position: absolute;
  top: 14px;
  left: 20px;
  font-size: 1.6rem;
  color: rgba(45, 42, 38, 0.35);
  animation: spin 8s linear infinite;
}

.cta-banner::after {
  content: '✦';
  position: absolute;
  bottom: 14px;
  right: 24px;
  font-size: 1.8rem;
  color: rgba(45, 42, 38, 0.3);
  animation: spin 6s linear infinite reverse;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.cta-banner h2 {
  color: var(--ink);
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: 10px;
  letter-spacing: -0.5px;
}

.cta-banner p {
  color: rgba(45, 42, 38, 0.7);
  margin-bottom: 24px;
  font-size: 1rem;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--primary);
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
}

.cta-banner .btn-primary:hover {
  background: #fff;
  color: var(--primary);
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--ink);
}

/* ============ 页脚 ============ */
.site-footer {
  padding: 56px 0 28px;
  background-color: var(--bg-alt);
  background-image: radial-gradient(rgba(45, 42, 38, 0.045) 1px, transparent 1px);
  background-size: 16px 16px;
  color: var(--ink);
  border-top: 3px dashed var(--ink);
}

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

.footer-brand p {
  opacity: 0.6;
  font-size: 0.92rem;
  line-height: 1.7;
  margin-top: 12px;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.92rem;
  font-weight: 900;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--primary);
}

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

.footer-col ul li a {
  font-size: 0.9rem;
  opacity: 0.65;
  transition: opacity 0.2s, padding-left 0.2s;
}

.footer-col ul li a:hover {
  opacity: 1;
  padding-left: 6px;
  color: var(--primary);
}

.footer-bottom {
  border-top: 2px dashed rgba(45, 42, 38, 0.4);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.6;
}

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

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.62;
  font-size: 1.02rem;
  line-height: 1.8;
}

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

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

/* ============ 响应式 ============ */
@media (max-width: 768px) {
  .hero {
    padding: 100px 0 60px;
  }

  .hero .container {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-image {
    order: -1;
    max-width: 100%;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .feature-block {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: var(--bg);
    padding: 24px;
    border-top: 2px solid var(--ink);
    border-bottom: 3px solid var(--ink);
    box-shadow: 0 8px 0 rgba(45, 42, 38, 0.1);
    gap: 18px;
    align-items: flex-start;
  }

  .main-nav.open .nav-cta {
    align-self: flex-start;
    width: auto;
  }

  .section {
    padding: 60px 0;
  }
}

@media (max-width: 480px) {
  .hero {
    min-height: auto;
  }

  .hero h1 {
    font-size: 2.1rem;
  }

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

  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

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

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

  .cta-banner h2 {
    font-size: 1.6rem;
  }

  .stat-item {
    padding: 20px 16px;
  }

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

  .container {
    padding: 0 18px;
  }
}