/* ============================================================
   ding-e.com.cn — "RETRO BROADCAST POP"
   Awwwards-inspired neo-brutalist TV nostalgia.
   Warm cream paper · candy coral · mint teal · butter yellow · lavender.
   Chunky borders, offset hard shadows, broadcast badges.
   ============================================================ */

:root {
  --cream: #FFF8ED;
  --navy: #16324F;
  --coral: #FF5C7A;
  --teal: #00C2A8;
  --yellow: #FFC145;
  --lavender: #8D86C9;
  --ink: rgba(22, 50, 79, 0.14);
  --border-w: 2.5px;
}

*, *::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(--cream);
  background-image:radial-gradient(rgba(22,50,79,0.05) 1px, transparent 1px);
  background-size:22px 22px;
  color:var(--navy);
  line-height:1.65;
}

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

::-webkit-scrollbar { width:10px; }
::-webkit-scrollbar-track { background:var(--cream); }
::-webkit-scrollbar-thumb { background:var(--navy); border:2px solid var(--cream); }

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

/* ============ 基础核心布局 ============ */

.container { max-width:1200px; margin:0 auto; padding:0 24px; }

.section {
  padding:96px 0;
  position:relative;
  scroll-margin-top:80px;
}

.section:nth-child(even) {
  background:#FBF3E6;
  border-top:3px dashed rgba(22,50,79,0.14);
  border-bottom:3px dashed rgba(22,50,79,0.14);
}

/* ============ 导航 ============ */

.site-header {
  position:fixed;
  top:0;
  left:0;
  width:100%;
  z-index:1000;
  background:rgba(255,248,237,0.93);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:3px solid var(--navy);
}

.site-header::before {
  content:'';
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:5px;
  background:linear-gradient(90deg,
    var(--coral) 0%, var(--yellow) 25%,
    var(--teal) 50%, var(--lavender) 75%,
    var(--coral) 100%);
  background-size:200% 100%;
  animation:headerTape 8s linear infinite;
  z-index:1;
  pointer-events:none;
}

@keyframes headerTape {
  0% { background-position:0% center; }
  100% { background-position:200% center; }
}

.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:10px;
  font-weight:800;
  font-size:1.25rem;
  text-decoration:none;
  color:var(--navy);
  letter-spacing:-0.5px;
}

.logo-icon {
  width:38px;
  height:38px;
  border-radius:50%;
  background:var(--coral);
  border:2px solid var(--navy);
  box-shadow:2.5px 2.5px 0 var(--navy);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:0.8rem;
  color:var(--navy);
}

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

.main-nav a {
  text-decoration:none;
  font-size:0.9rem;
  font-weight:600;
  color:var(--navy);
  position:relative;
  padding:4px 2px;
  letter-spacing:0.3px;
}

.main-nav a::after {
  content:'';
  position:absolute;
  bottom:0;
  left:0;
  width:0;
  height:3px;
  background:var(--coral);
  transition:width 0.2s ease;
}

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

.nav-cta {
  padding:9px 22px;
  background:var(--navy);
  color:var(--cream) !important;
  border-radius:0;
  font-weight:700;
  border:2px solid var(--navy);
  box-shadow:3px 3px 0 var(--coral);
  transition:0.15s;
  white-space:nowrap;
}

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

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

.menu-toggle {
  display:none;
  width:42px;
  height:42px;
  background:var(--cream);
  border:2px solid var(--navy);
  box-shadow:3px 3px 0 var(--navy);
  cursor:pointer;
  align-items:center;
  justify-content:center;
  padding:0;
  color:var(--navy);
}

.menu-toggle::before {
  content:'☰';
  font-size:1.3rem;
  line-height:1;
}

/* ============ Hero 首页 ============ */

.hero {
  min-height:90vh;
  display:flex;
  align-items:center;
  position:relative;
  overflow:hidden;
  padding:120px 0 80px;
  background:
    linear-gradient(135deg,
      rgba(255,92,122,0.07) 0%,
      rgba(0,194,168,0.05) 50%,
      rgba(255,193,69,0.08) 100%);
}

.hero::before {
  content:'';
  position:absolute;
  top:-60px;
  right:-60px;
  width:280px;
  height:280px;
  background:var(--yellow);
  border:3px solid var(--navy);
  border-radius:50%;
  box-shadow:8px 8px 0 var(--navy);
  z-index:0;
  opacity:0.18;
  pointer-events:none;
}

.hero::after {
  content:'';
  position:absolute;
  bottom:0;
  left:0;
  width:100%;
  height:22px;
  background:linear-gradient(90deg,
    var(--coral) 0% 15%,
    var(--yellow) 15% 30%,
    var(--teal) 30% 45%,
    var(--lavender) 45% 60%,
    var(--coral) 60% 75%,
    var(--yellow) 75% 90%,
    var(--teal) 90% 100%);
  border-top:2px solid var(--navy);
  z-index:3;
  pointer-events:none;
}

.hero .container {
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
  gap:64px;
  align-items:center;
  width:100%;
  position:relative;
  z-index:1;
}

.hero-content { max-width:none; }

.hero-eyebrow {
  display:inline-block;
  background:var(--yellow);
  border:2px solid var(--navy);
  box-shadow:3px 3px 0 var(--navy);
  border-radius:0;
  padding:5px 14px;
  color:var(--navy);
  font-weight:700;
  font-size:0.75rem;
  text-transform:uppercase;
  letter-spacing:2.5px;
  margin-bottom:22px;
}

.hero h1 {
  display:inline;
  font-size:clamp(2.8rem, 5.5vw, 4.6rem);
  font-weight:800;
  line-height:1.25;
  color:var(--navy);
  letter-spacing:-2px;
  padding:0 6px;
  -webkit-box-decoration-break:clone;
  box-decoration-break:clone;
  background-image:linear-gradient(
    transparent 60%,
    rgba(255,193,69,0.55) 60%
  );
}

.hero p {
  font-size:1.1rem;
  opacity:0.75;
  max-width:560px;
  margin:20px 0 34px;
  line-height:1.75;
}

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

.hero-image {
  position:relative;
  background:var(--cream);
  padding:10px;
  border:3px solid var(--navy);
  box-shadow:12px 12px 0 var(--coral);
  transform:rotate(2deg);
  transition:transform 0.3s ease, box-shadow 0.3s ease;
  animation:floatY 6s ease-in-out infinite;
}

@keyframes floatY {
  0%, 100% { transform:rotate(2deg) translateY(0); }
  50% { transform:rotate(2deg) translateY(-12px); }
}

.hero-image img {
  width:100%;
  height:auto;
  border:2px solid var(--navy);
  background:var(--navy);
}

.hero-image::before {
  content:'LIVE';
  position:absolute;
  top:-14px;
  left:20px;
  background:var(--coral);
  color:var(--cream);
  border:2px solid var(--navy);
  box-shadow:2px 2px 0 var(--navy);
  font-weight:800;
  font-size:0.7rem;
  letter-spacing:1.5px;
  padding:3px 12px;
  z-index:2;
}

.hero-image::after {
  content:'●';
  position:absolute;
  bottom:-16px;
  right:-16px;
  width:42px;
  height:42px;
  background:var(--yellow);
  border:2.5px solid var(--navy);
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:0.9rem;
  box-shadow:3px 3px 0 var(--navy);
  z-index:2;
}

/* ============ 按钮 ============ */

.btn {
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 30px;
  border-radius:0;
  font-weight:700;
  font-size:0.95rem;
  cursor:pointer;
  border:2px solid var(--navy);
  text-decoration:none;
  letter-spacing:0.5px;
  box-shadow:4px 4px 0 var(--navy);
  transition:all 0.12s ease;
}

.btn:hover {
  transform:translate(1px,1px);
  box-shadow:3px 3px 0 var(--navy);
}

.btn:active {
  transform:translate(3px,3px);
  box-shadow:1px 1px 0 var(--navy);
}

.btn-primary {
  background:var(--coral);
  color:var(--cream);
}

.btn-primary:hover { background:#FF4D6D; color:var(--cream); }

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

.btn-outline:hover {
  background:var(--teal);
  color:var(--navy);
  box-shadow:3px 3px 0 var(--navy);
}

/* ============ 标签 / 标题 ============ */

.section-label {
  display:inline-block;
  background:var(--lavender);
  border:2px solid var(--navy);
  box-shadow:2px 2px 0 var(--navy);
  border-radius:0;
  font-size:0.75rem;
  font-weight:700;
  letter-spacing:2.5px;
  padding:4px 14px;
  margin-bottom:16px;
  text-transform:uppercase;
  color:var(--navy);
}

.section-title {
  font-size:clamp(1.9rem, 3.5vw, 2.6rem);
  font-weight:800;
  color:var(--navy);
  line-height:1.2;
  margin-bottom:16px;
  letter-spacing:-1px;
  position:relative;
}

.section-title::after {
  content:'';
  position:absolute;
  bottom:-4px;
  left:0;
  width:64px;
  height:7px;
  background:var(--coral);
}

.text-center .section-title::after {
  left:50%;
  transform:translateX(-50%);
}

.section-desc {
  font-size:1.05rem;
  opacity:0.65;
  max-width:640px;
  margin-bottom:48px;
  line-height:1.75;
}

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

/* ============ 卡片网格 ============ */

.cards-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(260px, 1fr));
  gap:32px;
}

.category-card {
  position:relative;
  background:var(--cream);
  border:2.5px solid var(--navy);
  border-radius:0;
  padding:32px 28px 28px;
  transition:all 0.18s ease;
  box-shadow:6px 6px 0 rgba(22,50,79,0.12);
  overflow:visible;
}

.category-card::before {
  content:'';
  position:absolute;
  top:-2.5px;
  left:-2.5px;
  width:calc(100% + 5px);
  height:12px;
  background:var(--card-accent, var(--coral));
  border-bottom:2px solid var(--navy);
  z-index:1;
}

.category-card:nth-child(3n+1) { --card-accent: var(--coral); }
.category-card:nth-child(3n+2) { --card-accent: var(--teal); }
.category-card:nth-child(3n+3) { --card-accent: var(--yellow); }

.category-card:hover {
  transform:translate(-2px,-2px);
  box-shadow:9px 9px 0 rgba(22,50,79,0.2);
}

.card-icon {
  width:52px;
  height:52px;
  border:2px solid var(--navy);
  border-radius:0;
  background:var(--card-icon-bg, var(--cream));
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1.3rem;
  margin-bottom:18px;
  box-shadow:3px 3px 0 var(--navy);
  transition:transform 0.2s ease;
}

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

.card-link {
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:700;
  font-size:0.85rem;
  color:var(--navy);
  text-decoration:none;
  border-bottom:2px solid transparent;
  transition:border-color 0.15s;
  margin-top:8px;
}

.card-link:hover { border-bottom-color:var(--coral); }

.card-link::after {
  content:'→';
  transition:transform 0.15s;
}

.card-link:hover::after { transform:translateX(5px); }

/* ============ 特性块 ============ */

.feature-block {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:center;
}

.feature-image {
  position:relative;
  background:var(--cream);
  border:2.5px solid var(--navy);
  box-shadow:10px 10px 0 var(--teal);
  padding:8px;
  transform:rotate(-1deg);
  transition:transform 0.25s ease, box-shadow 0.25s ease;
}

.feature-image:hover {
  transform:rotate(0deg);
  box-shadow:12px 12px 0 var(--lavender);
}

.feature-image img {
  width:100%;
  height:auto;
  border:2px solid var(--navy);
}

.feature-text {
  position:relative;
}

.feature-list {
  list-style:none;
  margin-top:16px;
}

.feature-list li {
  padding:10px 0;
  display:flex;
  align-items:center;
  gap:12px;
  font-weight:500;
  border-bottom:2px dotted rgba(22,50,79,0.15);
}

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

.feature-list li::before {
  content:'✔';
  display:flex;
  align-items:center;
  justify-content:center;
  width:26px;
  height:26px;
  flex-shrink:0;
  background:var(--teal);
  border:1.5px solid var(--navy);
  color:var(--navy);
  font-size:0.75rem;
  font-weight:700;
  box-shadow:2px 2px 0 var(--navy);
}

/* ============ 数据条 ============ */

.stats-bar {
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:28px;
  text-align:center;
}

.stat-item {
  position:relative;
  background:var(--cream);
  border:2.5px solid var(--navy);
  border-radius:0;
  padding:30px 16px;
  box-shadow:5px 5px 0 var(--navy);
  transition:all 0.15s ease;
}

.stat-item:hover {
  transform:translate(-2px,-2px);
  box-shadow:8px 8px 0 var(--navy);
}

.stat-number {
  font-size:clamp(2rem, 3vw, 2.8rem);
  font-weight:800;
  color:var(--coral);
  font-family:'Impact','Arial Black',system-ui,sans-serif;
  letter-spacing:1px;
  line-height:1;
}

.stat-label {
  font-size:0.85rem;
  opacity:0.6;
  margin-top:10px;
  font-weight:600;
  text-transform:uppercase;
  letter-spacing:1.5px;
}

/* ============ 内容墙 ============ */

.content-wall {
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(280px, 1fr));
  gap:32px;
}

.content-wall-item {
  position:relative;
  background:var(--cream);
  border:2.5px solid var(--navy);
  border-radius:0;
  overflow:hidden;
  transition:all 0.18s ease;
  box-shadow:5px 5px 0 rgba(22,50,79,0.1);
}

.content-wall-item::before {
  content:'▶';
  position:absolute;
  top:12px;
  right:12px;
  width:38px;
  height:38px;
  background:var(--yellow);
  border:2px solid var(--navy);
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:0.7rem;
  z-index:2;
  box-shadow:2px 2px 0 var(--navy);
  transition:background 0.2s ease, transform 0.2s ease;
}

.content-wall-item::after {
  content:'';
  position:absolute;
  bottom:0;
  left:0;
  width:0;
  height:6px;
  background:var(--coral);
  transition:width 0.3s ease;
  z-index:2;
}

.content-wall-item:hover {
  transform:translate(-2px,-2px);
  box-shadow:8px 8px 0 rgba(22,50,79,0.15);
}

.content-wall-item:hover::before {
  background:var(--coral);
  transform:scale(1.08);
}

.content-wall-item:hover::after { width:100%; }

.content-wall-item img {
  width:100%;
  height:220px;
  object-fit:cover;
  border-bottom:2px solid var(--navy);
  filter:grayscale(0.2) contrast(1.05);
  transition:filter 0.3s ease;
}

.content-wall-item:hover img {
  filter:grayscale(0) contrast(1.1) saturate(1.1);
}

.content-wall-body { padding:22px 20px 24px; }

/* ============ FAQ ============ */

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

.faq-item {
  background:var(--cream);
  border:2px solid var(--navy);
  border-radius:0;
  margin-bottom:14px;
  overflow:hidden;
  cursor:pointer;
  box-shadow:3px 3px 0 rgba(22,50,79,0.08);
  transition:box-shadow 0.15s, border-color 0.15s;
}

.faq-item:hover {
  box-shadow:4px 4px 0 rgba(22,50,79,0.15);
}

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

.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;
  color:var(--navy);
}

.faq-item .faq-question::after {
  content:'+';
  flex-shrink:0;
  width:28px;
  height:28px;
  border:2px solid var(--navy);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1rem;
  font-weight:700;
  background:var(--yellow);
  box-shadow:2px 2px 0 var(--navy);
  transition:background 0.15s, content 0.15s;
}

.faq-item.open .faq-question::after {
  content:'−';
  background:var(--teal);
}

.faq-item .faq-answer {
  padding:0 22px 20px;
  display:none;
  opacity:0.75;
  line-height:1.75;
  font-size:0.95rem;
}

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

/* ============ CTA 横幅 ============ */

.cta-banner {
  position:relative;
  background:linear-gradient(135deg,
    var(--coral) 0%,
    var(--yellow) 50%,
    var(--teal) 100%);
  border:3px solid var(--navy);
  border-radius:0;
  box-shadow:10px 10px 0 var(--navy);
  padding:64px 48px;
  text-align:center;
  color:var(--navy);
  overflow:hidden;
}

.cta-banner::before {
  content:'';
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:14px;
  background:repeating-linear-gradient(
    90deg,
    rgba(22,50,79,0.35) 0 12px,
    transparent 12px 24px
  );
}

.cta-banner::after {
  content:'★ WATCH NOW ★';
  position:absolute;
  top:18px;
  right:-14px;
  background:var(--cream);
  border:2px solid var(--navy);
  padding:5px 14px;
  font-weight:800;
  font-size:0.7rem;
  transform:rotate(6deg);
  letter-spacing:1.5px;
  box-shadow:2px 2px 0 var(--navy);
}

.cta-banner h2 {
  position:relative;
  font-size:clamp(1.7rem, 3vw, 2.4rem);
  font-weight:800;
  color:var(--navy);
  margin-bottom:12px;
}

.cta-banner p {
  position:relative;
  color:rgba(22,50,79,0.85);
  font-size:1.05rem;
  max-width:520px;
  margin:0 auto;
}

.cta-banner .btn-primary {
  position:relative;
  background:var(--navy);
  color:var(--cream);
  border:2px solid var(--navy);
  box-shadow:4px 4px 0 rgba(22,50,79,0.3);
  margin-top:24px;
}

.cta-banner .btn-primary:hover {
  background:var(--cream);
  color:var(--navy);
}

/* ============ 页脚 ============ */

.site-footer {
  background:var(--yellow);
  color:var(--navy);
  border-top:4px solid var(--navy);
  padding:64px 0 32px;
  position:relative;
  scroll-margin-top:80px;
}

.site-footer h4 {
  font-size:0.9rem;
  font-weight:800;
  text-transform:uppercase;
  letter-spacing:1.5px;
  margin-bottom:16px;
  color:var(--navy);
}

.site-footer a {
  color:var(--navy);
  text-decoration:none;
  border-bottom:2px solid transparent;
  transition:border-color 0.15s;
}

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

.footer-grid {
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:44px;
}

.footer-brand {
  font-weight:700;
  font-size:1.05rem;
  line-height:1.6;
}

.footer-col {
  display:flex;
  flex-direction:column;
  gap:6px;
}

.footer-col a {
  display:inline-block;
  font-size:0.9rem;
  padding:3px 0;
  width:fit-content;
}

.footer-bottom {
  border-top:2px solid rgba(22,50,79,0.25);
  margin-top:48px;
  padding-top:22px;
  text-align:center;
  font-size:0.85rem;
  color:rgba(22,50,79,0.75);
}

/* ============ 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:1.75;
  font-size:1.05rem;
}

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

/* ============ 响应式 ============ */

@media (max-width: 768px) {
  .hero { min-height:auto; padding:110px 0 64px; }
  .hero .container {
    grid-template-columns:1fr;
    gap:48px;
  }
  .hero h1 { font-size:2.4rem; }
  .hero-image { max-width:420px; margin:0 auto; }

  .feature-block { grid-template-columns:1fr; gap:48px; }

  .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:72px;
    left:0;
    width:100%;
    background:var(--cream);
    border-bottom:3px solid var(--navy);
    padding:24px;
    gap:20px;
    box-shadow:0 10px 30px rgba(22,50,79,0.12);
  }

  .main-nav.open a {
    font-size:1.05rem;
    font-weight:700;
    padding:6px 0;
  }

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

  body:has(.main-nav.open) .menu-toggle::before {
    content:'×';
    font-size:1.6rem;
  }

  .cta-banner { padding:56px 28px; }
}

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

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

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

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

  .section { padding:64px 0; }

  .hero h1 { font-size:2rem; letter-spacing:-1px; }

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

  .cta-banner { padding:44px 20px; }

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

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

  .footer-bottom { font-size:0.8rem; }
}