/* =========================================================
   黑料爆料网 · 1112321025.net
   DESIGN SYSTEM — "EVIDENCE PAPER"
   暖纸底色 × 墨蓝油墨 × 珊瑚红印章 × 日光黄荧光笔
   ========================================================= */

:root {
  --paper:      #FDFAF3;
  --paper-soft: #FFFDF6;
  --ink:        #16203C;
  --ink-70:     rgba(22, 32, 60, 0.70);
  --ink-50:     rgba(22, 32, 60, 0.50);
  --line:       rgba(22, 32, 60, 0.14);
  --coral:      #FF4A2E;
  --coral-2:    #FF7A18;
  --yellow:     #FFD93D;
  --mint:       #17A398;
  --mint-soft:  #E4F7F4;
  --blush:      #FFE3DD;
  --radius:     14px;
  --hard:       5px 5px 0 var(--ink);
  --ease:       cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ============ 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;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(22, 32, 60, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 32, 60, 0.035) 1px, transparent 1px);
  background-size: 34px 34px;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

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

a:focus-visible,
button:focus-visible,
.faq-item:focus-visible {
  outline: 3px solid var(--coral);
  outline-offset: 3px;
  border-radius: 4px;
}

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

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

.section:nth-child(even) {
  background: #f8f9fa;
  background-image: radial-gradient(rgba(22, 32, 60, 0.05) 1px, transparent 1px);
  background-size: 22px 22px;
}

/* ============ 导航 — 固定顶部 ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(253, 250, 243, 0.92);
  -webkit-backdrop-filter: blur(10px) saturate(1.4);
  backdrop-filter: blur(10px) saturate(1.4);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.3s var(--ease);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg,
    var(--coral) 0%, var(--coral) 25%,
    var(--yellow) 25%, var(--yellow) 50%,
    var(--mint) 50%, var(--mint) 75%,
    var(--ink) 75%, var(--ink) 100%);
  opacity: 0.85;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 68px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.16rem;
  letter-spacing: -0.025em;
  text-decoration: none;
  color: var(--ink);
  white-space: nowrap;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 900;
  background: var(--ink);
  color: var(--yellow);
  box-shadow: 3px 3px 0 var(--coral);
  transform: rotate(-5deg);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.logo:hover .logo-icon {
  transform: rotate(4deg) scale(1.06);
  box-shadow: 4px 4px 0 var(--mint);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  list-style: none;
}

.main-nav a {
  position: relative;
  isolation: isolate;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--ink);
  padding: 6px 2px;
  transition: color 0.22s var(--ease);
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: -3px;
  bottom: 2px;
  width: calc(100% + 6px);
  height: 7px;
  background: var(--yellow);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.28s var(--ease);
  z-index: -1;
}

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

.nav-cta {
  padding: 10px 20px !important;
  border-radius: 9px;
  color: #fff !important;
  font-weight: 700 !important;
  background: var(--coral);
  box-shadow: 3px 3px 0 var(--ink);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s var(--ease) !important;
}

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

.nav-cta:hover {
  background: var(--coral-2);
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--ink);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 2px solid var(--ink);
  background: var(--paper-soft);
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 800;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--yellow);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.menu-toggle:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--yellow);
}

/* ============ 首页 Hero ============ */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 132px;
  padding-bottom: 72px;
}

.hero::before {
  content: "";
  position: absolute;
  top: -200px;
  right: -190px;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, rgba(255, 217, 61, 0.62), rgba(255, 217, 61, 0) 68%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -170px;
  left: -150px;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(23, 163, 152, 0.26), rgba(23, 163, 152, 0) 70%);
  pointer-events: none;
}

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

.hero-content { max-width: 760px; }

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 22px;
  background: var(--yellow);
  color: var(--ink);
  border: 1.5px solid var(--ink);
  box-shadow: 3px 3px 0 rgba(22, 32, 60, 0.9);
  transform: rotate(-1.4deg);
}

.hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: -0.035em;
  font-weight: 900;
  margin-bottom: 22px;
  color: var(--ink);
  text-wrap: balance;
}

.hero p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--ink-70);
  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: 9px 9px 0 var(--yellow);
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s var(--ease);
}

.hero-image:hover img { transform: scale(1.035); }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 9px;
  font-family: inherit;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
  transition: transform 0.2s var(--ease),
              box-shadow 0.2s var(--ease),
              background 0.2s var(--ease),
              color 0.2s var(--ease);
}

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

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

.btn-primary:active {
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 var(--ink);
}

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

.btn-outline:hover {
  background: var(--yellow);
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 var(--ink);
}

/* ============ 标签 / 标题 ============ */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--coral);
  margin-bottom: 16px;
}

.section-label::before {
  content: "";
  display: block;
  width: 24px;
  height: 3px;
  background: var(--coral);
  border-radius: 2px;
}

.section-title {
  font-size: clamp(1.6rem, 3.4vw, 2.35rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.22;
  margin-bottom: 14px;
  color: var(--ink);
  text-wrap: balance;
}

.section-desc {
  max-width: 620px;
  line-height: 1.8;
  color: var(--ink-70);
  margin-bottom: 40px;
}

/* ============ 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: var(--paper-soft);
  position: relative;
  transition: transform 0.26s var(--ease),
              box-shadow 0.26s var(--ease),
              background 0.26s var(--ease);
}

.category-card:hover {
  transform: translateY(-5px);
  box-shadow: 7px 7px 0 var(--ink);
  background: #ffffff;
}

.category-card::after {
  content: "";
  position: absolute;
  top: 14px;
  right: 14px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--coral);
  opacity: 0;
  transition: opacity 0.26s var(--ease);
}

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

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.3rem;
  border: 1.5px solid var(--ink);
  background: var(--yellow);
  transition: transform 0.3s var(--ease);
}

.category-card:hover .card-icon { transform: rotate(-6deg) scale(1.05); }

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

.category-card h3 {
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: -0.015em;
  margin-bottom: 8px;
}

.category-card p {
  font-size: 0.92rem;
  color: var(--ink-70);
  margin-bottom: 16px;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 2px solid var(--yellow);
  padding-bottom: 2px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), gap 0.2s var(--ease);
}

.card-link:hover {
  color: var(--coral);
  border-color: var(--coral);
  gap: 10px;
}

/* ============ 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: 9px 9px 0 var(--yellow);
}

.feature-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s var(--ease);
}

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

.feature-text { position: relative; }

.feature-text h2 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.25;
  margin-bottom: 14px;
}

.feature-text > p {
  color: var(--ink-70);
  margin-bottom: 24px;
  line-height: 1.8;
}

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

.feature-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 0.96rem;
  border-bottom: 1px dashed var(--line);
}

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

.feature-list li::before {
  content: '✓';
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 0.78rem;
  color: #fff;
  background: var(--mint);
  border: 1.5px solid var(--ink);
}

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

.stat-item {
  padding: 32px 20px 26px;
  border-radius: var(--radius);
  border: 2px solid var(--ink);
  background: var(--paper-soft);
  position: relative;
  overflow: hidden;
  transition: transform 0.26s var(--ease), box-shadow 0.26s var(--ease);
}

.stat-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: var(--coral);
}

.stat-item:nth-child(2)::before { background: var(--yellow); }
.stat-item:nth-child(3)::before { background: var(--mint); }
.stat-item:nth-child(4)::before { background: var(--ink); }

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 6px 6px 0 var(--ink);
}

.stat-number {
  font-size: clamp(1.9rem, 4vw, 2.5rem);
  font-weight: 900;
  letter-spacing: -0.045em;
  line-height: 1.05;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.stat-item:nth-child(1) .stat-number { color: var(--coral); }
.stat-item:nth-child(3) .stat-number { color: var(--mint); }

.stat-label {
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ink-50);
  margin-top: 10px;
}

/* ============ 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;
  transition: transform 0.26s var(--ease), box-shadow 0.26s var(--ease);
}

.content-wall-item:hover {
  transform: translateY(-5px);
  box-shadow: 7px 7px 0 var(--yellow);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  border-bottom: 2px solid var(--ink);
  transition: transform 0.5s var(--ease);
}

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

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

.content-wall-body h3 {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.45;
  margin-bottom: 8px;
}

.content-wall-body p {
  font-size: 0.9rem;
  color: var(--ink-70);
  line-height: 1.7;
}

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

.faq-item {
  border: 2px solid var(--ink);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  background: var(--paper-soft);
  transition: box-shadow 0.22s var(--ease),
              transform 0.22s var(--ease),
              background 0.22s var(--ease);
}

.faq-item:hover {
  transform: translateX(3px);
  box-shadow: -4px 4px 0 var(--yellow);
}

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  line-height: 1.5;
}

.faq-item .faq-question::after {
  content: "+";
  flex: 0 0 auto;
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1;
  color: var(--coral);
  transition: transform 0.3s var(--ease), color 0.3s var(--ease);
}

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  color: var(--ink-70);
  line-height: 1.8;
  font-size: 0.95rem;
}

.faq-item.open {
  background: var(--paper-soft);
  box-shadow: 5px 5px 0 var(--ink);
  transform: translate(-2px, -2px);
}

.faq-item.open .faq-question::after {
  transform: rotate(135deg);
  color: var(--mint);
}

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

/* ============ CTA横幅 ============ */
.cta-banner {
  padding: 64px 32px;
  text-align: center;
  border-radius: 20px;
  color: #fff;
  background: linear-gradient(135deg, var(--coral) 0%, var(--coral-2) 58%, var(--yellow) 135%);
  border: 2px solid var(--ink);
  box-shadow: 11px 11px 0 var(--ink);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.4) 1.5px, transparent 1.5px);
  background-size: 20px 20px;
  opacity: 0.55;
  pointer-events: none;
}

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

.cta-banner h2 {
  color: #fff;
  font-size: clamp(1.5rem, 3.2vw, 2.2rem);
  font-weight: 900;
  letter-spacing: -0.035em;
  line-height: 1.2;
  margin-bottom: 14px;
  text-shadow: 0 2px 0 rgba(22, 32, 60, 0.18);
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.94);
  max-width: 560px;
  margin: 0 auto 28px;
  line-height: 1.8;
}

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

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

/* ============ 页脚 ============ */
.site-footer {
  padding: 56px 0 28px;
  background: #F4EFE2;
  border-top: 2px solid var(--ink);
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 100%;
  height: 3px;
  background: repeating-linear-gradient(
    90deg,
    var(--coral) 0 18px,
    var(--yellow) 18px 36px,
    var(--mint) 36px 54px,
    var(--ink) 54px 72px
  );
}

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

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

.footer-brand .logo { margin-bottom: 16px; }

.footer-brand p {
  font-size: 0.92rem;
  color: var(--ink-70);
  line-height: 1.85;
  max-width: 340px;
}

.footer-brand .brand-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.footer-brand .brand-tags span {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 4px 12px;
  border-radius: 20px;
  border: 1.5px solid var(--ink);
  background: var(--yellow);
}

.footer-col h4 {
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 2px dashed rgba(22, 32, 60, 0.2);
}

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

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

.footer-col a {
  font-size: 0.9rem;
  color: var(--ink-70);
  text-decoration: none;
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

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

.footer-bottom {
  border-top: 1px solid rgba(22, 32, 60, 0.16);
  margin-top: 40px;
  padding-top: 22px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--ink-50);
  letter-spacing: 0.02em;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  color: var(--ink-70);
  line-height: 1.85;
  text-align: center;
}

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

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

  .feature-block { grid-template-columns: 1fr; gap: 36px; }
  .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: flex-start;
    gap: 6px;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: var(--paper);
    padding: 20px 24px 26px;
    border-bottom: 2px solid var(--ink);
    box-shadow: 0 12px 24px rgba(22, 32, 60, 0.12);
  }

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

  .main-nav.open a {
    display: block;
    padding: 11px 4px;
    font-size: 0.98rem;
    border-bottom: 1px dashed var(--line);
  }

  .main-nav.open .nav-cta {
    display: inline-block;
    margin-top: 12px;
    border-bottom: none !important;
    text-align: center;
  }

  .hero {
    padding-top: 108px;
    padding-bottom: 56px;
    min-height: auto;
  }

  .hero-eyebrow { transform: none; }
  .cta-banner { padding: 48px 22px; box-shadow: 7px 7px 0 var(--ink); }
  .footer-brand p { max-width: 100%; }
}

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

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

  .hero-buttons { flex-direction: column; align-items: stretch; }
  .hero-buttons .btn { width: 100%; }

  .section-title { font-size: 1.5rem; }
  .faq-item .faq-question { padding: 15px 16px; font-size: 0.94rem; }
  .faq-item .faq-answer { padding: 0 16px 15px; }
}