/* ============================================================
   黑料吃瓜在线 — 设计系统
   风格：奶油糖果 Magazine / 硬边贴纸 Neo-Brutalist Lite
   配色：奶油白底 + 西瓜粉 + 电光紫 + 酸柠绿 + 紫墨字
   ============================================================ */

:root {
  --cream: #FDF7EC;
  --cream-2: #F3EEFF;
  --ink: #241B3D;
  --ink-soft: #5B4E7A;
  --pink: #FF4D8D;
  --coral: #FF7A59;
  --violet: #6B4DFF;
  --lime: #C6F542;
  --line: rgba(36, 27, 61, 0.14);
  --shadow-hard: 6px 6px 0 var(--ink);
  --radius: 18px;
}

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

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x:hidden;
  background: var(--cream);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(560px 420px at 88% -6%, rgba(255,77,141,0.16), transparent 70%),
    radial-gradient(620px 520px at -8% 32%, rgba(107,77,255,0.12), transparent 72%),
    radial-gradient(420px 380px at 52% 108%, rgba(198,245,66,0.22), transparent 70%);
}

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

::selection { background: var(--lime); color: var(--ink); }

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--cream-2); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--pink), var(--violet));
  border-radius: 999px;
  border: 2px solid var(--cream-2);
}

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

.section { padding:80px 0; position: relative; z-index: 1; }

.section:nth-child(even) { background:#f3eeff; }

/* 区块之间的纹理分隔 */
.section:nth-child(even)::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 6px;
  background: repeating-linear-gradient(
    115deg,
    var(--pink) 0 18px,
    var(--violet) 18px 36px,
    var(--lime) 36px 54px
  );
  opacity: 0.9;
}

/* ---------------- 导航 ---------------- */
.site-header {
  position:fixed; top:0; left:0; width:100%; z-index:1000;
  background:rgba(253,247,236,0.86);
  backdrop-filter:blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  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:8px;
  font-weight:800; font-size:1.18rem;
  letter-spacing:-0.02em;
  text-decoration:none; color:var(--ink);
  white-space: nowrap;
}

.logo-icon {
  width:36px; height:36px; border-radius:12px;
  display:flex; align-items:center; justify-content:center;
  font-size:1rem;
  background: linear-gradient(135deg, var(--pink), var(--violet));
  color:#fff;
  box-shadow: 3px 3px 0 var(--ink);
  transform: rotate(-6deg);
  transition: transform .25s cubic-bezier(.34,1.56,.64,1);
}

.logo:hover .logo-icon { transform: rotate(6deg) scale(1.06); }

.main-nav { display:flex; align-items:center; gap:24px; list-style:none; }

.main-nav a {
  position: relative;
  text-decoration:none;
  font-size:0.86rem;
  font-weight:600;
  letter-spacing:0.02em;
  color: var(--ink-soft);
  transition: color .2s;
}

.main-nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -5px;
  width: 100%; height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--pink), var(--lime));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .28s cubic-bezier(.65,0,.35,1);
}

.main-nav a:hover { color: var(--ink); }
.main-nav a:hover::after { transform: scaleX(1); }

.nav-cta {
  padding:9px 22px; border-radius:999px;
  color:#fff !important; font-weight:700;
  background: linear-gradient(135deg, var(--pink), var(--coral));
  box-shadow: 3px 3px 0 var(--ink);
  transition: transform .18s, box-shadow .18s;
}

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

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

.menu-toggle {
  display:none;
  width:44px; height:44px;
  align-items:center; justify-content:center;
  border-radius:14px;
  border:2px solid var(--ink);
  background:#fff;
  color: var(--ink);
  font-size:1.1rem;
  cursor:pointer;
  box-shadow: 3px 3px 0 var(--ink);
}

/* ---------------- Hero ---------------- */
.hero {
  min-height:78vh;
  display:flex; align-items:center;
  padding-top: 128px;
  padding-bottom: 72px;
  position:relative;
  overflow:hidden;
}

.hero::before {
  content:'';
  position:absolute;
  width:560px; height:560px;
  right:-160px; top:-140px;
  border-radius:50%;
  background: radial-gradient(circle at 34% 32%, rgba(255,77,141,0.30), rgba(107,77,255,0.18) 56%, transparent 74%);
  filter: blur(4px);
  pointer-events:none;
}

.hero::after {
  content:'';
  position:absolute;
  left:-120px; bottom:-180px;
  width:420px; height:420px;
  border-radius:50%;
  background: radial-gradient(circle, rgba(198,245,66,0.42), transparent 68%);
  pointer-events:none;
}

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

.hero-eyebrow {
  display:inline-block;
  font-size:0.78rem;
  font-weight:800;
  letter-spacing:0.16em;
  padding:6px 16px;
  border-radius:999px;
  margin-bottom:20px;
  background: var(--lime);
  color: var(--ink);
  border:2px solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  transform: rotate(-1.5deg);
}

.hero h1 {
  font-size: clamp(2.4rem, 5.8vw, 4.1rem);
  font-weight:900;
  line-height:1.08;
  letter-spacing:-0.035em;
  margin-bottom:22px;
}

.hero h1 em {
  font-style: normal;
  position: relative;
  white-space: nowrap;
}

.hero h1 em::after {
  content: '';
  position: absolute;
  left: -2%; bottom: 0.06em;
  width: 104%; height: 0.34em;
  background: linear-gradient(90deg, rgba(255,77,141,0.42), rgba(198,245,66,0.6));
  border-radius: 4px;
  z-index: -1;
  transform: rotate(-1deg);
}

.hero p {
  font-size:1.08rem;
  opacity:1;
  color: var(--ink-soft);
  max-width:560px;
  margin-bottom:34px;
}

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

.hero-image {
  border-radius: var(--radius);
  overflow:hidden;
  border:2px solid var(--ink);
  box-shadow: 10px 10px 0 rgba(107,77,255,0.35);
  background:#fff;
}

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

/* ---------------- 按钮 ---------------- */
.btn {
  display:inline-flex; align-items:center; gap:8px;
  padding:14px 30px;
  border-radius:999px;
  font-weight:700;
  font-size:0.95rem;
  letter-spacing:0.01em;
  cursor:pointer;
  border:none;
  text-decoration:none;
  transition: transform .18s cubic-bezier(.34,1.56,.64,1), box-shadow .18s, background .2s, color .2s;
  will-change: transform;
}

.btn-primary {
  color:#fff;
  background: linear-gradient(135deg, var(--pink), var(--violet));
  box-shadow: 4px 4px 0 var(--ink);
}

.btn-primary:hover {
  transform: translate(-2px,-3px);
  box-shadow: 7px 7px 0 var(--ink);
}

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

.btn-outline {
  background: #fff;
  border:2px solid var(--ink);
  color: var(--ink);
  box-shadow: 4px 4px 0 rgba(36,27,61,0.16);
}

.btn-outline:hover {
  background: var(--lime);
  transform: translate(-2px,-3px);
  box-shadow: 7px 7px 0 var(--ink);
}

/* ---------------- 标签 / 标题 ---------------- */
.section-label {
  display:inline-block;
  font-size:0.74rem;
  font-weight:800;
  letter-spacing:0.2em;
  text-transform: uppercase;
  padding:5px 14px;
  border-radius:999px;
  margin-bottom:16px;
  color:#fff;
  background: var(--violet);
  box-shadow: 3px 3px 0 rgba(36,27,61,0.9);
  transform: rotate(-1deg);
}

.section-title {
  font-size: clamp(1.75rem, 3.6vw, 2.55rem);
  font-weight:900;
  line-height:1.15;
  letter-spacing:-0.03em;
  margin-bottom:16px;
}

.section-desc {
  max-width:600px;
  color: var(--ink-soft);
  opacity:1;
  margin-bottom:44px;
  font-size:1.02rem;
}

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

.category-card {
  border-radius: var(--radius);
  padding:28px;
  border:2px solid var(--ink);
  background:#fff;
  box-shadow: 5px 5px 0 rgba(36,27,61,0.12);
  transition: transform .24s cubic-bezier(.34,1.56,.64,1), box-shadow .24s, background .3s;
  position: relative;
  overflow: hidden;
}

.category-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 5px;
  background: linear-gradient(90deg, var(--pink), var(--violet) 50%, var(--lime));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s cubic-bezier(.65,0,.35,1);
}

.category-card:hover {
  transform: translate(-3px,-6px);
  box-shadow: 10px 12px 0 var(--ink);
}

.category-card:hover::after { transform: scaleX(1); }

.category-card h3 {
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}

.category-card p {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin-bottom: 18px;
}

.card-icon {
  width:48px; height:48px; border-radius:14px;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:18px;
  font-size:1.3rem;
  background: linear-gradient(135deg, rgba(255,77,141,0.18), rgba(107,77,255,0.18));
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 rgba(36,27,61,0.2);
}

.category-card:nth-child(3n+1) .card-icon { background: linear-gradient(135deg, #FFD9E6, #FFB3CE); }
.category-card:nth-child(3n+2) .card-icon { background: linear-gradient(135deg, #DCD2FF, #BFAEFF); }
.category-card:nth-child(3n+3) .card-icon { background: linear-gradient(135deg, #E9FFA8, #C6F542); }

.card-link {
  font-weight:800;
  font-size:0.84rem;
  letter-spacing:0.04em;
  text-decoration:none;
  color: var(--pink);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap .2s, color .2s;
}

.card-link::after { content: '→'; transition: transform .2s; }

.card-link:hover { color: var(--violet); gap: 12px; }

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

.feature-image {
  border-radius: var(--radius);
  overflow:hidden;
  border:2px solid var(--ink);
  box-shadow: 10px 10px 0 var(--lime);
  background:#fff;
  transform: rotate(-1deg);
}

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

.feature-text { }

.feature-text h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight:900;
  line-height:1.16;
  letter-spacing:-0.03em;
  margin-bottom:16px;
}

.feature-text > p {
  color: var(--ink-soft);
  margin-bottom: 24px;
}

.feature-list { list-style:none; }

.feature-list li {
  padding:8px 0;
  display:flex;
  align-items:center;
  gap:12px;
  font-weight: 600;
  font-size: 0.96rem;
}

.feature-list li::before {
  content:'✓';
  font-weight:900;
  font-size: 0.72rem;
  color: var(--ink);
  width: 24px; height: 24px;
  flex: 0 0 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--lime);
  border: 2px solid var(--ink);
}

/* ---------------- 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: var(--radius);
  border:2px solid var(--ink);
  background:#fff;
  box-shadow: 5px 5px 0 rgba(36,27,61,0.12);
  transition: transform .22s cubic-bezier(.34,1.56,.64,1), box-shadow .22s;
}

.stat-item:hover {
  transform: translateY(-6px);
  box-shadow: 8px 10px 0 var(--ink);
}

.stat-number {
  font-size:2.2rem;
  font-weight:900;
  letter-spacing:-0.04em;
  line-height:1.1;
  background: linear-gradient(135deg, var(--pink), var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-label {
  font-size:0.86rem;
  font-weight:600;
  color: var(--ink-soft);
  margin-top:8px;
  letter-spacing: 0.02em;
}

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

.content-wall-item {
  border-radius: var(--radius);
  overflow:hidden;
  border:2px solid var(--ink);
  background:#fff;
  box-shadow: 5px 5px 0 rgba(36,27,61,0.12);
  transition: transform .24s cubic-bezier(.34,1.56,.64,1), box-shadow .24s;
}

.content-wall-item:hover {
  transform: translate(-3px,-6px);
  box-shadow: 10px 12px 0 var(--ink);
}

.content-wall-item img {
  width:100%;
  height:200px;
  object-fit:cover;
  border-bottom: 2px solid var(--ink);
  filter: saturate(1.08);
}

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

.content-wall-body h3 {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

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

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

.faq-item {
  border:2px solid var(--line);
  border-radius:16px;
  margin-bottom:12px;
  overflow:hidden;
  cursor:pointer;
  background:#fff;
  transition: border-color .22s, box-shadow .22s, transform .22s;
}

.faq-item:hover {
  border-color: var(--ink);
  box-shadow: 5px 5px 0 rgba(36,27,61,0.12);
}

.faq-item .faq-question {
  padding:18px 22px;
  font-weight:700;
  font-size:0.98rem;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap: 16px;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 800;
  line-height: 1;
  color: var(--pink);
  transition: transform .3s cubic-bezier(.34,1.56,.64,1);
  flex: 0 0 auto;
}

.faq-item.open {
  border-color: var(--ink);
  box-shadow: 5px 5px 0 var(--ink);
}

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

.faq-item .faq-answer {
  padding:0 22px 18px;
  display:none;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.faq-item.open .faq-answer { display:block; animation: faqIn .3s ease both; }

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

/* ---------------- CTA 横幅 ---------------- */
.cta-banner {
  padding:64px 32px;
  text-align:center;
  border-radius:28px;
  color:#fff;
  background: linear-gradient(125deg, var(--violet) 0%, var(--pink) 58%, var(--coral) 100%);
  border:2px solid var(--ink);
  box-shadow: 12px 12px 0 var(--ink);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg,
    rgba(255,255,255,0.08) 0 12px,
    transparent 12px 24px
  );
  pointer-events: none;
}

.cta-banner h2 {
  color:#fff;
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  font-weight:900;
  letter-spacing:-0.03em;
  line-height:1.16;
  margin-bottom: 14px;
  position: relative;
}

.cta-banner p {
  color: rgba(255,255,255,0.88);
  max-width: 560px;
  margin: 0 auto 28px;
  position: relative;
}

.cta-banner .btn-primary {
  background:#fff;
  color: var(--ink);
  box-shadow: 4px 4px 0 rgba(36,27,61,0.9);
  position: relative;
}

.cta-banner .btn-primary:hover {
  background: var(--lime);
  box-shadow: 7px 7px 0 rgba(36,27,61,0.9);
}

/* ---------------- 页脚 ---------------- */
.site-footer {
  padding:56px 0 28px;
  background: #EFE7FF;
  border-top: 2px solid var(--ink);
  color: var(--ink);
  position: relative;
  z-index: 1;
}

.site-footer .container { }

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

.footer-brand { }

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

.footer-brand p {
  font-size: 0.9rem;
  color: var(--ink-soft);
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--violet);
  margin-bottom: 16px;
}

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

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

.footer-col a {
  font-size: 0.9rem;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color .2s, padding-left .2s;
}

.footer-col a:hover {
  color: var(--pink);
  padding-left: 5px;
}

.footer-bottom {
  border-top:1px solid rgba(36,27,61,0.16);
  margin-top:40px;
  padding-top:20px;
  text-align:center;
  font-size:0.85rem;
  color: var(--ink-soft);
}

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

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

.seo-description {
  max-width:600px;
  margin:0 auto 48px;
  color: var(--ink-soft);
  opacity:1;
  text-align: center;
}

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

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

/* ---------------- 响应式 ---------------- */
@media (max-width: 992px) {
  .footer-grid { grid-template-columns: 1.6fr 1fr 1fr; gap: 32px; }
  .feature-block { gap: 36px; }
}

@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; }
  .main-nav { display:none; }
  .menu-toggle { display:flex; }
  .main-nav.open {
    display:flex;
    flex-direction:column;
    align-items: stretch;
    gap: 4px;
    position:absolute;
    top:68px; left:0;
    width:100%;
    background:#FDF7EC;
    padding:20px 24px 26px;
    border-bottom: 2px solid var(--ink);
    box-shadow: 0 18px 30px rgba(36,27,61,0.14);
  }
  .main-nav.open a {
    padding: 12px 4px;
    font-size: 1rem;
    color: var(--ink);
    border-bottom: 1px dashed var(--line);
  }
  .main-nav.open a::after { display: none; }
  .main-nav.open .nav-cta {
    margin-top: 16px;
    text-align: center;
    justify-content: center;
    display: flex;
    border-bottom: none !important;
  }
  .section { padding: 64px 0; }
  .hero { padding-top: 110px; min-height: auto; }
  .feature-image { transform: none; }
  .cta-banner { padding: 48px 22px; box-shadow: 8px 8px 0 var(--ink); border-radius: 22px; }
}

@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; align-items: stretch; }
  .hero-buttons .btn { justify-content: center; }
  .stat-number { font-size: 1.9rem; }
  .section-title { font-size: 1.6rem; }
}