/* =============================================
   影视工厂 · 胶片工场设计系统
   "故事进厂，影像出厂"
   ============================================= */

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

:root {
  --film-orange: #E85D3D;
  --film-orange-soft: #F0805C;
  --film-amber: #D4A44A;
  --film-green: #1D3E3A;
  --film-green-soft: #2E5E54;
  --film-cream: #FBF6EE;
  --film-cream-deep: #F2E9DC;
  --film-ink: #2A2724;
  --film-muted: #696056;
  --film-line: rgba(42, 39, 36, 0.10);
  --film-card: #FFFFFF;
  --film-radius: 14px;
  --film-shadow: 0 6px 24px rgba(42, 39, 36, 0.07);
  --film-shadow-lg: 0 14px 40px rgba(42, 39, 36, 0.10);
  --film-transition: 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background: var(--film-cream);
  color: var(--film-ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

.section:nth-child(even) {
  background: var(--film-cream-deep);
}

/* =============================================
   导航
   ============================================= */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(251, 246, 238, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--film-line);
  box-shadow: 0 2px 20px rgba(42, 39, 36, 0.03);
}

.site-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: radial-gradient(circle, rgba(232, 93, 61, 0.75) 2px, transparent 2.5px);
  background-size: 28px 6px;
  background-repeat: repeat-x;
  background-position: center;
  pointer-events: none;
}

.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: 900;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--film-green);
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--film-orange) 0%, var(--film-amber) 100%);
  color: #fff;
  box-shadow: 0 4px 12px rgba(232, 93, 61, 0.25);
  position: relative;
}

.logo-icon::after {
  content: '';
  position: absolute;
  right: 4px;
  bottom: 4px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #fff;
  opacity: 0.7;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--film-muted);
  letter-spacing: 0.01em;
  padding: 6px 2px;
  position: relative;
  transition: color 0.2s ease;
}

.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--film-orange);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s ease;
}

.main-nav a:hover {
  color: var(--film-green);
}

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

.nav-cta {
  padding: 9px 22px;
  border-radius: 999px;
  color: #fff !important;
  font-weight: 700;
  background: var(--film-orange);
  box-shadow: 0 4px 14px rgba(232, 93, 61, 0.25);
  transition: all 0.3s ease;
}

.nav-cta:hover {
  background: var(--film-orange-soft);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(232, 93, 61, 0.32);
}

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

.menu-toggle {
  display: none;
}

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

.hero {
  min-height: 80vh;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
  padding: 140px 0 80px;
  position: relative;
  background:
    linear-gradient(90deg, rgba(29, 62, 58, 0.035) 1px, transparent 1px) 0 0 / 48px 48px,
    linear-gradient(rgba(29, 62, 58, 0.035) 1px, transparent 1px) 0 0 / 48px 48px,
    radial-gradient(ellipse at 75% 30%, rgba(232, 93, 61, 0.12) 0%, rgba(212, 164, 74, 0.06) 40%, transparent 70%),
    var(--film-cream);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 164, 74, 0.14) 0%, transparent 70%);
  top: -80px;
  left: -80px;
  z-index: 0;
  animation: filmPulse 6s ease-in-out infinite;
}

@keyframes filmPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

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

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 16px;
  border-radius: 999px;
  background: rgba(232, 93, 61, 0.10);
  color: var(--film-orange);
  margin-bottom: 20px;
  border: 1px solid rgba(232, 93, 61, 0.18);
}

.hero-eyebrow::before {
  content: '●';
  font-size: 0.5rem;
  color: var(--film-orange);
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  line-height: 1.15;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--film-green);
  margin-bottom: 24px;
}

.hero p {
  font-size: 1.05rem;
  opacity: 0.75;
  color: var(--film-muted);
  max-width: 520px;
  line-height: 1.7;
  margin-bottom: 36px;
}

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

.hero-image {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--film-shadow-lg);
  background: var(--film-cream-deep);
}

.hero-image::before {
  content: '';
  position: absolute;
  inset: 16px;
  border: 2px solid rgba(232, 93, 61, 0.45);
  border-radius: 10px;
  z-index: 2;
  pointer-events: none;
}

.hero-image::after {
  content: '';
  position: absolute;
  inset: 16px;
  z-index: 3;
  pointer-events: none;
  background:
    linear-gradient(var(--film-orange), var(--film-orange)) top left / 16px 3px,
    linear-gradient(var(--film-orange), var(--film-orange)) top left / 3px 16px,
    linear-gradient(var(--film-orange), var(--film-orange)) top right / 16px 3px,
    linear-gradient(var(--film-orange), var(--film-orange)) top right / 3px 16px,
    linear-gradient(var(--film-orange), var(--film-orange)) bottom left / 16px 3px,
    linear-gradient(var(--film-orange), var(--film-orange)) bottom left / 3px 16px,
    linear-gradient(var(--film-orange), var(--film-orange)) bottom right / 16px 3px,
    linear-gradient(var(--film-orange), var(--film-orange)) bottom right / 3px 16px;
  background-repeat: no-repeat;
  opacity: 0.9;
}

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

.hero-image:hover img {
  transform: scale(1.02);
}

/* =============================================
   按钮
   ============================================= */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all var(--film-transition);
  letter-spacing: 0.01em;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transition: left 0.6s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--film-orange) 0%, var(--film-orange-soft) 100%);
  color: #fff;
  box-shadow: 0 6px 20px rgba(232, 93, 61, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(232, 93, 61, 0.35);
}

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

.btn-outline:hover {
  background: var(--film-green);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(29, 62, 58, 0.18);
}

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

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--film-orange);
  margin-bottom: 14px;
  border: 1px solid rgba(232, 93, 61, 0.25);
  border-radius: 4px;
  padding: 3px 10px;
  background: rgba(232, 93, 61, 0.06);
}

.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 900;
  color: var(--film-green);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-desc {
  max-width: 600px;
  color: var(--film-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 44px;
}

/* =============================================
   卡片网格
   ============================================= */

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 28px;
}

.category-card {
  background: var(--film-card);
  border-radius: var(--film-radius);
  padding: 30px 30px 28px;
  border: 1px solid var(--film-line);
  position: relative;
  transition: all var(--film-transition);
}

.category-card::after {
  content: '';
  position: absolute;
  right: 14px;
  top: 20px;
  bottom: 20px;
  width: 4px;
  background: radial-gradient(circle, rgba(232, 93, 61, 0.65) 2px, transparent 2.5px);
  background-size: 4px 12px;
  background-repeat: repeat-y;
  opacity: 0.4;
  transition: opacity 0.3s ease;
}

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

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--film-shadow-lg);
  border-color: rgba(232, 93, 61, 0.25);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(232, 93, 61, 0.12), rgba(212, 164, 74, 0.10));
  color: var(--film-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.4rem;
  border: 1px solid rgba(232, 93, 61, 0.15);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--film-green);
  margin-top: 14px;
  text-decoration: none;
  transition: gap 0.2s ease;
}

.card-link:hover {
  gap: 8px;
}

/* =============================================
   特性块
   ============================================= */

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

.feature-block:nth-child(even) .feature-image {
  order: 2;
}

.feature-block:nth-child(even) .feature-text {
  order: 1;
}

.feature-image {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--film-shadow);
  background: var(--film-cream-deep);
}

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

.feature-image:hover img {
  transform: scale(1.03);
}

.feature-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(29, 62, 58, 0.06) 0%, transparent 40%);
  pointer-events: none;
}

.feature-text {
  padding: 0;
}

.feature-text .section-title {
  margin-bottom: 20px;
}

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

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  color: var(--film-muted);
}

.feature-list li::before {
  content: '✓';
  font-weight: 800;
  color: var(--film-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(232, 93, 61, 0.12);
  font-size: 0.72rem;
  flex-shrink: 0;
}

/* =============================================
   数据条
   ============================================= */

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

.stat-item {
  background: var(--film-card);
  padding: 32px 20px;
  border-radius: 14px;
  border: 1px solid var(--film-line);
  position: relative;
  text-align: center;
  transition: transform var(--film-transition);
}

.stat-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 24px;
  right: 24px;
  height: 3px;
  background: linear-gradient(90deg, var(--film-orange), var(--film-amber));
  border-radius: 0 0 4px 4px;
  transform: scaleX(0.6);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.stat-item:hover::before {
  transform: scaleX(1);
}

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

.stat-number {
  font-size: 2.6rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--film-green);
  line-height: 1.1;
}

.stat-number::after {
  content: '+';
  color: var(--film-orange);
  font-size: 1.6rem;
  vertical-align: top;
  margin-left: 2px;
}

.stat-label {
  font-size: 0.88rem;
  color: var(--film-muted);
  margin-top: 8px;
  font-weight: 500;
}

/* =============================================
   内容墙
   ============================================= */

.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px;
}

.content-wall-item {
  background: var(--film-card);
  border-radius: var(--film-radius);
  overflow: hidden;
  border: 1px solid var(--film-line);
  position: relative;
  transition: all var(--film-transition);
}

.content-wall-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--film-shadow-lg);
  border-color: rgba(232, 93, 61, 0.3);
}

.content-wall-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

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

.content-wall-body {
  padding: 22px 24px 24px;
  position: relative;
  z-index: 1;
}

.content-wall-body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 24px;
  right: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--film-orange), transparent);
}

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

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

.faq-item {
  background: var(--film-card);
  border: 1px solid var(--film-line);
  border-radius: 12px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: rgba(232, 93, 61, 0.3);
}

.faq-item.open {
  border-color: rgba(232, 93, 61, 0.4);
  box-shadow: 0 4px 16px rgba(42, 39, 36, 0.06);
}

.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(--film-green);
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--film-orange);
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

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

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  color: var(--film-muted);
  line-height: 1.7;
  font-size: 0.95rem;
}

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

@keyframes faqFade {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

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

.cta-banner {
  padding: 64px 40px;
  text-align: center;
  border-radius: 18px;
  background: linear-gradient(120deg, var(--film-orange) 0%, #EF7754 50%, var(--film-amber) 110%);
  position: relative;
  overflow: hidden;
  color: #fff;
  box-shadow: 0 16px 40px rgba(232, 93, 61, 0.25);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -80%;
  left: 10%;
  width: 40%;
  height: 260%;
  background: radial-gradient(ellipse, rgba(255, 255, 255, 0.20) 0%, transparent 60%);
  transform: rotate(18deg);
  animation: beamMove 8s ease-in-out infinite alternate;
}

@keyframes beamMove {
  0% { transform: rotate(18deg) translateX(0); }
  100% { transform: rotate(18deg) translateX(60px); }
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 8px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.35) 3px, transparent 3.5px);
  background-size: 32px 8px;
  background-repeat: repeat-x;
  background-position: center;
}

.cta-banner h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 900;
  color: #fff;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
  letter-spacing: -0.02em;
}

.cta-banner p {
  position: relative;
  z-index: 1;
  max-width: 420px;
  margin: 0 auto 28px;
  opacity: 0.9;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--film-orange);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.10);
  z-index: 1;
  position: relative;
}

.cta-banner .btn-primary:hover {
  color: var(--film-orange-dark, #C94F33);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.14);
}

/* =============================================
   页脚
   ============================================= */

.site-footer {
  padding: 64px 0 28px;
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--film-orange) 0 40px,
    transparent 40px 48px,
    var(--film-amber) 48px 88px,
    transparent 88px 96px
  );
  opacity: 0.6;
}

.site-footer .container {
  border-bottom: 1px solid var(--film-line);
}

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

.footer-brand {
  color: var(--film-muted);
}

.footer-brand .logo {
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.9rem;
  max-width: 260px;
  opacity: 0.8;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--film-green);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.footer-col a {
  color: var(--film-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: var(--film-orange);
}

.footer-bottom {
  border-top: 1px solid var(--film-line);
  margin-top: 8px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--film-muted);
}

/* =============================================
   工具类
   ============================================= */

.text-accent {
  color: var(--film-orange);
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  color: var(--film-muted);
  line-height: 1.7;
}

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

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

/* =============================================
   响应式
   ============================================= */

@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 110px;
    gap: 36px;
    text-align: center;
  }

  .hero p {
    margin-left: auto;
    margin-right: auto;
  }

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

  .hero-image {
    max-width: 520px;
    margin: 0 auto;
  }

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

  .feature-block:nth-child(even) .feature-image {
    order: 0;
  }

  .feature-block:nth-child(even) .feature-text {
    order: 0;
  }

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

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

  .main-nav {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: var(--film-cream);
    padding: 20px 28px;
    box-shadow: 0 12px 30px rgba(42, 39, 36, 0.10);
    border-bottom: 1px solid var(--film-line);
    gap: 4px;
  }

  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    position: relative;
    z-index: 1001;
  }

  .menu-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--film-green);
    border-radius: 2px;
    position: relative;
  }

  .menu-toggle span::before,
  .menu-toggle span::after {
    content: '';
    position: absolute;
    left: 0;
    width: 18px;
    height: 2px;
    background: var(--film-green);
    border-radius: 2px;
  }

  .menu-toggle span::before {
    top: -6px;
  }

  .menu-toggle span::after {
    top: 6px;
  }

  .main-nav.open {
    display: flex;
    gap: 6px;
  }

  .main-nav a {
    padding: 10px 0;
    border-bottom: 1px solid rgba(42, 39, 36, 0.06);
  }

  .main-nav a::after {
    display: none;
  }

  .nav-cta {
    margin-top: 8px;
    border-radius: 10px;
    text-align: center;
  }
}

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

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

  .section {
    padding: 56px 0;
  }

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

  .social-links {
    justify-content: flex-start;
  }
}