/* ============================================
   HEILIAOWANG · 黑料网吃瓜 设计系统
   风格定位 · 酸性杂志 / 南瓜香料 / 解构贴纸
   ============================================ */

:root {
  --paper: #FFF8F0;
  --paper-deep: #FFEFDD;
  --coral: #FF5A36;
  --coral-deep: #E63E22;
  --mustard: #FFC800;
  --teal: #00BFA5;
  --ink: #2A1710;
  --ink-soft: rgba(42, 23, 16, 0.64);
  --card-bg: #FFFFFF;
  --border-soft: rgba(255, 90, 54, 0.18);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 32px;
}

/* 基础重置 */
*, *::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: radial-gradient(rgba(255, 90, 54, 0.07) 1px, transparent 1px);
  background-size: 30px 30px;
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

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

a {
  color: inherit;
}

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

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

.section {
  padding: 96px 0;
  background-color: var(--paper);
  background-image:
    radial-gradient(rgba(255, 90, 54, 0.045) 1px, transparent 1px);
  background-size: 30px 30px;
  border-bottom: 2px dashed rgba(255, 90, 54, 0.12);
}

.section:nth-child(even) {
  background-color: var(--paper-deep);
  background-image:
    radial-gradient(rgba(255, 200, 0, 0.06) 1px, transparent 1px);
  background-size: 30px 30px;
}

.section:last-of-type {
  border-bottom: none;
}

/* 导航 — 固定顶部 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 248, 240, 0.85);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 2px solid var(--ink);
  box-shadow: 0 3px 0 rgba(255, 200, 0, 0.55);
}

.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: 900;
  font-size: 1.35rem;
  text-decoration: none;
  color: var(--ink);
  letter-spacing: -0.02em;
  position: relative;
}

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 14px 14px 14px 4px;
  background: var(--coral);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 900;
  box-shadow: 3px 3px 0 var(--ink);
  transform: rotate(-8deg);
  transition: transform 0.2s;
}

.logo:hover .logo-icon {
  transform: rotate(0deg) scale(1.05);
}

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

.main-nav a {
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--ink);
  padding: 6px 2px;
  position: relative;
  transition: color 0.2s;
}

.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 3px;
  background: var(--coral);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s ease;
}

.main-nav a:not(.nav-cta):hover {
  color: var(--coral-deep);
}

.main-nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-cta {
  padding: 10px 26px !important;
  border-radius: 100px;
  color: var(--paper) !important;
  font-weight: 800;
  background: var(--ink);
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 var(--coral);
  transition: all 0.2s ease;
}

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

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

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 2px solid var(--ink);
  background: var(--mustard);
  font-size: 1.3rem;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 2px 2px 0 var(--ink);
}

.menu-toggle::before {
  content: '☰';
  font-weight: 900;
}

/* 首页Hero */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 56px;
  padding: 140px 24px 80px;
  position: relative;
  background:
    radial-gradient(circle at 82% 22%, rgba(255, 200, 0, 0.4) 0%, transparent 38%),
    radial-gradient(circle at 12% 82%, rgba(0, 191, 165, 0.16) 0%, transparent 32%),
    var(--paper);
  border-bottom: 2px solid var(--ink);
}

.hero-content {
  flex: 1 1 520px;
  max-width: 720px;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  padding: 7px 20px;
  border-radius: 100px;
  background: var(--mustard);
  color: var(--ink);
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  margin-bottom: 20px;
  transform: rotate(-2deg);
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--ink);
  text-shadow: 4px 4px 0 var(--mustard);
  margin-bottom: 24px;
}

.hero p {
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--ink-soft);
  max-width: 560px;
  margin-bottom: 40px;
  line-height: 1.75;
  border-left: 4px solid var(--coral);
  padding-left: 22px;
}

.hero-buttons {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.hero-image {
  flex: 1 1 340px;
  max-width: 440px;
  min-height: 360px;
  position: relative;
  border-radius: 50%;
  overflow: hidden;
  background: linear-gradient(150deg, #e4ffea, #7ed957);
  border: 4px solid var(--ink);
  box-shadow: 14px 14px 0 var(--coral);
  animation: float 6s ease-in-out infinite;
}

.hero-image::before {
  content: '';
  position: absolute;
  inset: 13%;
  border-radius: 50%;
  background: linear-gradient(145deg, #ff6b6b, #e02a2a);
  border: 3px dashed rgba(255, 255, 255, 0.55);
}

.hero-image::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background:
    radial-gradient(ellipse 7px 12px at 28% 32%, #2e1114 0 32%, transparent 34%),
    radial-gradient(ellipse 7px 12px at 68% 38%, #2e1114 0 32%, transparent 34%),
    radial-gradient(ellipse 7px 12px at 44% 68%, #2e1114 0 32%, transparent 34%),
    radial-gradient(ellipse 7px 12px at 55% 22%, #2e1114 0 32%, transparent 34%);
  z-index: 1;
}

.hero-image img {
  position: relative;
  z-index: 3;
  width: 100%;
  height: auto;
  object-fit: cover;
  mix-blend-mode: multiply;
  border-radius: 50%;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50%      { transform: translateY(-14px) rotate(3deg); }
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 100px;
  font-weight: 800;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.22s ease;
  position: relative;
}

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

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

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

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

/* 标签 / 标题 */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.2em;
  margin-bottom: 14px;
  padding: 6px 18px;
  background: var(--paper-deep);
  border: 2px solid var(--ink);
  border-radius: 100px;
  color: var(--ink);
  text-transform: uppercase;
  box-shadow: 3px 3px 0 var(--coral);
  transform: rotate(-1.5deg);
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--ink);
}

.section-desc {
  max-width: 600px;
  color: var(--ink-soft);
  font-size: 1.05rem;
  line-height: 1.75;
  margin-bottom: 48px;
}

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

.category-card {
  background: var(--card-bg);
  border: 2px solid var(--ink);
  border-radius: var(--radius-md);
  padding: 30px 26px;
  position: relative;
  transition: all 0.25s ease;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--coral) 0%, var(--mustard) 60%, var(--teal) 100%);
}

.category-card:hover {
  transform: translate(-4px, -4px);
  box-shadow: 8px 8px 0 var(--coral);
  background: #FFFDF9;
}

.category-card h3 {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.category-card p {
  font-size: 0.88rem;
  color: var(--ink-soft);
  line-height: 1.6;
  margin-bottom: 14px;
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--coral);
  border: 2px solid var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.5rem;
  color: #fff;
  transform: rotate(-6deg);
  transition: transform 0.2s;
}

.category-card:nth-child(3n+2) .card-icon {
  background: var(--teal);
}

.category-card:nth-child(3n+3) .card-icon {
  background: var(--mustard);
  color: var(--ink);
}

.category-card:hover .card-icon {
  transform: rotate(6deg) scale(1.08);
}

.card-link {
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--coral-deep);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.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: 64px;
  align-items: center;
}

.feature-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 2px solid var(--ink);
  min-height: 320px;
  background: linear-gradient(145deg, var(--teal) 0%, #c6f5ec 100%);
  box-shadow: 10px 10px 0 var(--mustard);
}

.feature-image::before {
  content: '爆料';
  position: absolute;
  top: 24px;
  left: -32px;
  background: var(--mustard);
  color: var(--ink);
  font-weight: 900;
  font-size: 0.9rem;
  padding: 8px 36px;
  transform: rotate(-38deg);
  box-shadow: 0 3px 0 rgba(0, 0, 0, 0.12);
  border: 2px solid var(--ink);
  border-radius: 4px;
  z-index: 3;
}

.feature-image img {
  width: 100%;
  height: auto;
  object-fit: cover;
  mix-blend-mode: multiply;
  position: relative;
  z-index: 1;
}

.feature-text {
  position: relative;
}

.feature-text::before {
  content: '“';
  font-size: 130px;
  font-weight: 900;
  color: var(--coral);
  font-family: Georgia, serif;
  position: absolute;
  top: -56px;
  left: -18px;
  line-height: 1;
  opacity: 0.28;
}

.feature-text h2 {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
  line-height: 1.2;
}

.feature-text p {
  color: var(--ink-soft);
  line-height: 1.75;
}

.feature-list {
  list-style: none;
  margin-top: 26px;
}

.feature-list li {
  padding: 12px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  border-bottom: 1px dashed var(--border-soft);
  color: var(--ink);
  font-size: 0.98rem;
}

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

.feature-list li::before {
  content: '✓';
  font-weight: 900;
  color: #fff;
  background: var(--teal);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  border: 2px solid var(--ink);
  flex-shrink: 0;
}

/* 数据条 */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
  text-align: center;
}

.stat-item {
  background: var(--card-bg);
  padding: 32px 20px;
  border: 2px solid var(--ink);
  border-radius: var(--radius-md);
  position: relative;
  transition: all 0.25s ease;
}

.stat-item:hover {
  transform: rotate(-2deg) scale(1.02);
  box-shadow: 8px 8px 0 var(--ink);
}

.stat-number {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 900;
  line-height: 1;
  color: var(--coral);
  font-variant-numeric: tabular-nums;
  text-shadow: 3px 3px 0 rgba(255, 200, 0, 0.6);
}

.stat-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink-soft);
  margin-top: 10px;
  letter-spacing: 0.06em;
}

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

.content-wall-item {
  background: var(--card-bg);
  border: 2px solid var(--ink);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  transition: all 0.25s ease;
}

.content-wall-item:hover {
  transform: translate(-4px, -4px);
  box-shadow: 8px 8px 0 var(--coral-deep);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 2px solid var(--ink);
  filter: grayscale(30%) contrast(1.04);
  transition: filter 0.3s;
}

.content-wall-item:hover img {
  filter: grayscale(0) contrast(1.06);
}

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

.content-wall-body .tag {
  display: inline-block;
  background: var(--mustard);
  font-size: 0.7rem;
  font-weight: 800;
  border: 1.5px solid var(--ink);
  padding: 2px 12px;
  border-radius: 100px;
  margin-bottom: 10px;
}

.content-wall-body h3 {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 6px;
  line-height: 1.4;
}

.content-wall-body p {
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.6;
}

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

.faq-item {
  background: var(--card-bg);
  border: 2px solid var(--ink);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
}

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

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 800;
  font-size: 1.05rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  position: relative;
}

.faq-question::after {
  content: '+';
  font-size: 1.7rem;
  font-weight: 400;
  color: var(--coral);
  line-height: 1;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

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

.faq-item .faq-answer {
  padding: 0 24px 20px;
  color: var(--ink-soft);
  line-height: 1.7;
  display: none;
}

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

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

/* CTA横幅 */
.cta-banner {
  padding: 64px 40px;
  text-align: center;
  border-radius: var(--radius-lg);
  color: #fff;
  background: var(--coral);
  border: 3px solid var(--ink);
  position: relative;
  overflow: hidden;
  box-shadow: 12px 12px 0 var(--mustard);
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 20%, rgba(255, 200, 0, 0.4) 0%, transparent 34%),
    radial-gradient(circle at 82% 72%, rgba(0, 191, 165, 0.35) 0%, transparent 34%);
  z-index: 1;
}

.cta-banner > * {
  position: relative;
  z-index: 2;
}

.cta-banner h2 {
  color: #fff;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 900;
  text-shadow: 3px 3px 0 var(--ink);
  margin-bottom: 12px;
}

.cta-banner p {
  opacity: 0.92;
  margin-bottom: 28px;
  font-size: 1.05rem;
}

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

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

/* 页脚 */
.site-footer {
  background: var(--ink);
  color: var(--paper);
  padding: 72px 0 32px;
  margin-top: 0;
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 0;
  right: 0;
  height: 14px;
  background: repeating-linear-gradient(90deg, var(--coral) 0 20px, var(--mustard) 20px 40px, var(--teal) 40px 60px);
  border-bottom: 2px solid var(--ink);
  z-index: 1;
}

.site-footer .container {
  position: relative;
  z-index: 2;
}

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

.footer-brand p {
  margin-top: 16px;
  opacity: 0.72;
  line-height: 1.7;
  max-width: 280px;
  font-size: 0.92rem;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 18px;
  color: var(--mustard);
  letter-spacing: 0.08em;
  display: inline-block;
  position: relative;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 24px;
  height: 3px;
  background: var(--coral);
  border-radius: 4px;
}

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

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

.footer-col ul a {
  color: rgba(255, 248, 240, 0.66);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.footer-col ul a:hover {
  color: var(--mustard);
  padding-left: 6px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.72;
  letter-spacing: 0.04em;
}

/* 工具类 */
.text-accent {
  color: var(--coral-deep);
  font-weight: 900;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.74;
  line-height: 1.75;
}

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

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .hero {
    justify-content: center;
    text-align: center;
  }

  .hero p {
    margin-left: auto;
    margin-right: auto;
    border-left: none;
    border-top: 4px solid var(--coral);
    padding-left: 0;
    padding-top: 14px;
  }

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

  .hero-image {
    flex: 1 1 100%;
    max-width: 360px;
    margin: 0 auto;
    min-height: 300px;
  }

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

  .feature-text::before {
    top: -48px;
    left: 0;
  }

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

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

  .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;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--paper);
    border-bottom: 2px solid var(--ink);
    padding: 24px;
    gap: 18px;
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.08);
  }

  .main-nav.open a {
    font-size: 1.05rem;
  }

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

  .hero {
    padding-top: 130px;
  }

  .hero h1 {
    font-size: 2.4rem;
  }
}

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

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

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

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

  .hero-image {
    min-height: 260px;
  }

  .cta-banner {
    padding: 40px 18px;
    box-shadow: 6px 6px 0 var(--mustard);
  }

  .section {
    padding: 64px 0;
  }

  .header-inner {
    padding: 0 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001s !important;
    transition-duration: 0.001s !important;
  }
}