/* ============================================
   🎬 复古胶片新潮 — Retro Cinematic Warmth
   Online Cinema | 在线看片
   ============================================ */

:root {
  --cream: #FFF9F2;
  --coral: #FF5E3A;
  --teal: #00B5AD;
  --amber: #FFC93C;
  --ink: #1F1B16;
  --sand: #F5EDE4;
  --muted: rgba(31,27,22,0.65);
  --line: rgba(31,27,22,0.08);
  --gradient-warm: linear-gradient(135deg, #FF5E3A, #FF8F65);
  --shadow-warm: 0 8px 32px rgba(255,94,58,0.22);
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  overflow-x: hidden;
  background-color: var(--cream);
  background-image:
    radial-gradient(circle, rgba(255,94,58,0.05) 1.2px, transparent 1.2px);
  background-size: 28px 28px;
  color: var(--ink);
  line-height: 1.6;
}

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

.section {
  padding: 90px 0;
  position: relative;
}

.section:nth-child(even) {
  background: #FDF3EA;
}

/* ========== 顶部导航 ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255,249,242,0.94);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 2px dashed rgba(255,94,58,0.25);
}

.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(--ink);
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  background: var(--gradient-warm);
  color: #fff;
  box-shadow: 0 4px 14px rgba(255,94,58,0.35);
  transition: transform 0.3s;
}

.logo:hover .logo-icon {
  transform: rotate(-8deg) scale(1.05);
}

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

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink);
  opacity: 0.75;
  transition: all 0.2s;
  position: relative;
}

.main-nav a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--coral);
  border-radius: 2px;
  transition: width 0.25s;
}

.main-nav a:not(.nav-cta):hover {
  opacity: 1;
  color: var(--coral);
}

.main-nav a:not(.nav-cta):hover::after {
  width: 100%;
}

.nav-cta {
  padding: 9px 22px;
  border-radius: 12px;
  color: #fff !important;
  font-weight: 600;
  background: var(--gradient-warm);
  box-shadow: 0 4px 16px rgba(255,94,58,0.3);
  opacity: 1 !important;
  transition: transform 0.2s, box-shadow 0.2s;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(255,94,58,0.4);
  color: #fff !important;
}

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

.menu-toggle {
  display: none;
  background: none;
  border: 1.5px solid var(--ink);
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 1.1rem;
  cursor: pointer;
  color: var(--ink);
  background: rgba(255,249,242,0.8);
  transition: all 0.2s;
}

.menu-toggle:hover {
  border-color: var(--coral);
  color: var(--coral);
}

/* ========== Hero 区 ========== */
.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 120px 0 60px;
  background:
    radial-gradient(ellipse at 85% 20%, rgba(0,181,173,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 10% 90%, rgba(255,201,60,0.1) 0%, transparent 40%);
}

.hero::before {
  content: '▶';
  position: absolute;
  right: 8%;
  top: 15%;
  font-size: 14rem;
  color: rgba(255,94,58,0.05);
  z-index: 0;
  line-height: 1;
}

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

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 24px;
  margin-bottom: 20px;
  background: var(--teal);
  color: #fff;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  box-shadow: 0 4px 16px rgba(0,181,173,0.25);
}

.hero-eyebrow::before {
  content: '▶';
  font-size: 0.6rem;
}

.hero h1 {
  font-size: 3.4rem;
  line-height: 1.15;
  margin-bottom: 20px;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.hero h1::after {
  content: '';
  display: block;
  width: 140px;
  height: 4px;
  margin-top: 16px;
  background: var(--coral);
  border-radius: 4px;
  box-shadow: 160px 0 0 var(--teal), 320px 0 0 var(--amber);
}

.hero p {
  font-size: 1.12rem;
  opacity: 0.7;
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.7;
}

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

.hero-image {
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  background: linear-gradient(135deg, #FFE4D6, #FFD0BC);
  min-height: 280px;
  box-shadow: 0 16px 48px rgba(255,94,58,0.15);
}

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

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 0.95rem;
}

.btn-primary {
  background: var(--gradient-warm);
  color: #fff;
  box-shadow: 0 4px 18px rgba(255,94,58,0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(255,94,58,0.4);
}

.btn-outline {
  background: transparent;
  border: 1.8px solid var(--ink);
  color: var(--ink);
}

.btn-outline:hover {
  background: var(--ink);
  color: var(--cream);
  transform: translateY(-2px);
}

/* ========== 标题 / 标签 ========== */
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  margin-bottom: 14px;
  padding: 5px 14px;
  border-radius: 20px;
  background: #FFE8E0;
  color: var(--coral);
  text-transform: uppercase;
}

.section-title {
  font-size: 2.3rem;
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
  line-height: 1.25;
  position: relative;
  padding-bottom: 14px;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 56px;
  height: 3px;
  background: var(--coral);
  border-radius: 3px;
  box-shadow: 64px 0 0 var(--amber);
}

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

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 42px;
  font-size: 1.02rem;
  line-height: 1.7;
}

/* ========== 分类卡片 ========== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 26px;
}

.category-card {
  border-radius: 18px;
  padding: 32px 28px;
  border: 1px solid var(--line);
  background: #fff;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 28px;
  right: 28px;
  height: 3px;
  background: linear-gradient(90deg, var(--coral), var(--amber));
  border-radius: 0 0 4px 4px;
  opacity: 0;
  transform: scaleX(0.6);
  transition: all 0.3s;
}

.category-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 28px rgba(31,27,22,0.08);
  border-color: transparent;
}

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

.card-icon {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.4rem;
  background: linear-gradient(135deg, #FFF1E9, #FFE4D6);
  color: var(--coral);
  transition: transform 0.3s;
}

.category-card:hover .card-icon {
  transform: scale(1.1) rotate(-6deg);
}

.card-link {
  font-weight: 700;
  font-size: 0.88rem;
  text-decoration: none;
  color: var(--coral);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 8px;
}

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

.card-link:hover::after {
  transform: translateX(4px);
}

/* ========== 特性区块 ========== */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.feature-image {
  border-radius: 20px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--teal), #00D0C8);
  min-height: 260px;
  box-shadow: 0 12px 36px rgba(0,181,173,0.18);
}

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

.feature-text h2 {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}

.feature-text p {
  opacity: 0.7;
  margin-bottom: 18px;
  line-height: 1.7;
}

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

.feature-list li {
  padding: 7px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  color: var(--ink);
}

.feature-list li::before {
  content: '✓';
  font-weight: 800;
  color: var(--teal);
  background: rgba(0,181,173,0.1);
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 0.7rem;
  flex-shrink: 0;
}

/* ========== 数据条 ========== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  background: var(--gradient-warm);
  border-radius: 24px;
  padding: 40px 36px;
  box-shadow: var(--shadow-warm);
  position: relative;
  overflow: hidden;
}

.stats-bar::after {
  content: '';
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  top: -60px;
  right: -60px;
}

.stats-bar::before {
  content: '';
  position: absolute;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  bottom: -30px;
  left: 20%;
}

.stat-item {
  padding: 28px 18px;
  border-radius: 18px;
  border: none;
  background: rgba(255,255,255,0.14);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: transform 0.3s;
}

.stat-item:hover {
  transform: translateY(-4px);
}

.stat-number {
  font-size: 2.6rem;
  font-weight: 900;
  color: #fff;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.stat-label {
  font-size: 0.85rem;
  opacity: 0.85;
  margin-top: 8px;
  color: rgba(255,255,255,0.9);
  font-weight: 500;
}

/* ========== 内容墙 ========== */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 26px;
}

.content-wall-item {
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.content-wall-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 32px rgba(31,27,22,0.08);
  border-color: transparent;
}

.content-wall-item img {
  display: block;
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: linear-gradient(135deg, var(--amber), var(--coral));
}

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

.content-wall-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.content-wall-body p {
  font-size: 0.85rem;
  opacity: 0.6;
  line-height: 1.5;
}

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

.faq-item {
  border: 1px solid var(--line);
  border-radius: 16px;
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  transition: all 0.3s;
  padding: 0;
}

.faq-item.open {
  border-color: rgba(255,94,58,0.3);
  box-shadow: 0 4px 20px rgba(255,94,58,0.06);
}

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.98rem;
  color: var(--ink);
  transition: color 0.2s;
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--coral);
  transition: transform 0.3s;
  line-height: 1;
  flex-shrink: 0;
}

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

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  font-size: 0.95rem;
  line-height: 1.7;
}

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

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

/* ========== CTA 横幅 ========== */
.cta-banner {
  padding: 64px 56px;
  text-align: center;
  border-radius: 28px;
  background: var(--gradient-warm);
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-warm);
}

.cta-banner::before {
  content: '▶';
  position: absolute;
  right: 5%;
  bottom: -20px;
  font-size: 7rem;
  color: rgba(255,255,255,0.1);
  line-height: 1;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.cta-banner p {
  color: rgba(255,255,255,0.9);
  font-size: 1.05rem;
  margin-bottom: 32px;
  opacity: 0.9;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--coral);
  box-shadow: 0 6px 20px rgba(255,255,255,0.2);
}

.cta-banner .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(255,255,255,0.3);
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--sand);
  border-top: 2px dashed rgba(255,94,58,0.2);
  padding: 60px 0 28px;
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -22px;
  left: 50%;
  transform: translateX(-50%) rotate(-5deg);
  width: 56px;
  height: 44px;
  background: repeating-linear-gradient(
    45deg,
    var(--ink) 0 7px,
    #fff 7px 14px
  );
  border-radius: 5px;
  box-shadow: 0 4px 12px rgba(31,27,22,0.15);
  z-index: 2;
}

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

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

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

.footer-brand p {
  font-size: 0.92rem;
  opacity: 0.65;
  line-height: 1.7;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}

.footer-col a {
  display: block;
  padding: 5px 0;
  color: var(--ink);
  opacity: 0.6;
  text-decoration: none;
  font-size: 0.88rem;
  transition: all 0.2s;
}

.footer-col a:hover {
  opacity: 1;
  color: var(--coral);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(31,27,22,0.1);
  margin-top: 44px;
  padding-top: 22px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.6;
  letter-spacing: 0.02em;
}

/* ========== 工具类 ========== */
.text-accent {
  color: var(--coral);
  font-weight: 700;
}

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

.seo-description {
  max-width: 640px;
  margin: 0 auto 50px;
  opacity: 0.7;
  font-size: 1.02rem;
  line-height: 1.75;
}

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

/* ========== 响应式 ========== */
@media (max-width: 992px) {
  .hero h1 {
    font-size: 2.6rem;
  }

  .hero::before {
    font-size: 9rem;
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    padding: 32px 24px;
  }

  .cta-banner {
    padding: 48px 36px;
  }

  .cta-banner h2 {
    font-size: 1.8rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }

  .feature-block {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .feature-image {
    min-height: 220px;
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding: 28px 20px;
    border-radius: 20px;
  }

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

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

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 0.9rem;
  }

  .menu-toggle::before {
    content: '☰';
    font-size: 1.2rem;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--cream);
    padding: 24px;
    gap: 20px;
    border-bottom: 2px dashed rgba(255,94,58,0.25);
    box-shadow: 0 12px 32px rgba(31,27,22,0.08);
    animation: slideDown 0.3s ease;
  }

  .main-nav.open a {
    font-size: 1rem;
    padding: 6px 0;
  }

  .main-nav.open .nav-cta {
    display: inline-flex;
    justify-content: center;
    margin-top: 8px;
  }

  @keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .hero {
    padding-top: 100px;
    min-height: auto;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

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

  .hero-content {
    margin-bottom: 40px;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .cta-banner {
    padding: 40px 24px;
    border-radius: 22px;
  }

  .cta-banner h2 {
    font-size: 1.5rem;
  }

  .cta-banner .btn-primary {
    padding: 12px 24px;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 18px;
  }

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

  .stats-bar {
    grid-template-columns: 1fr;
    padding: 24px 18px;
  }

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

  .stat-number {
    font-size: 1.8rem;
  }

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

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

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

  .hero h1 {
    font-size: 1.9rem;
  }

  .hero::before {
    font-size: 6rem;
    top: 10%;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .feature-block {
    gap: 28px;
  }

  .cta-banner {
    padding: 36px 20px;
  }

  .cta-banner::before {
    font-size: 4rem;
  }

  .btn {
    padding: 11px 24px;
    font-size: 0.9rem;
  }
}

/* ========== 无障碍与细节完善 ========== */
::selection {
  background: var(--coral);
  color: #fff;
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--cream);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--coral), #FF8F65);
  border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--coral);
}

a:focus,
button:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(255,94,58,0.25);
  border-radius: 8px;
}

img {
  max-width: 100%;
}

/* ========== 补充装饰 ========== */
.footer-col:nth-child(2) a::before,
.footer-col:nth-child(3) a::before {
  content: '› ';
  color: var(--coral);
  font-weight: 700;
  margin-right: 2px;
}

.category-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.category-card p {
  font-size: 0.88rem;
  opacity: 0.65;
  line-height: 1.6;
}