/* ============================================================
   星光传媒影视作品集 - 全站样式
   主题:深色影院质感 + 金色点缀
   ============================================================ */

:root {
  --color-bg: #0d0f14;
  --color-bg-alt: #141821;
  --color-bg-card: #1a1f2b;
  --color-gold: #d4a94e;
  --color-gold-light: #e8c87e;
  --color-text: #e8e9ec;
  --color-text-dim: #9aa1ad;
  --color-line: rgba(212, 169, 78, 0.18);
  --font-main: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --radius: 12px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  --transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

ul, ol {
  list-style: none;
}

.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(13, 15, 20, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-gold);
  white-space: nowrap;
}

.brand span {
  color: var(--color-text);
  font-weight: 400;
  font-size: 0.8rem;
  margin-left: 8px;
  letter-spacing: 2px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-menu a {
  position: relative;
  font-size: 0.98rem;
  color: var(--color-text-dim);
  padding: 6px 0;
}

.nav-menu a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-gold-light));
  transition: width 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--color-gold);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 26px;
  height: 2px;
  background: var(--color-gold);
  transition: var(--transition);
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero 主视觉 ---------- */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  padding: 140px 0 80px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(13, 15, 20, 0.96) 30%, rgba(13, 15, 20, 0.55) 65%, rgba(13, 15, 20, 0.35) 100%);
  z-index: 1;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

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

.hero-tag {
  display: inline-block;
  padding: 6px 18px;
  border: 1px solid var(--color-gold);
  border-radius: 999px;
  color: var(--color-gold);
  font-size: 0.85rem;
  letter-spacing: 3px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1.25;
  font-weight: 800;
  margin-bottom: 20px;
  max-width: 720px;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, var(--color-gold), var(--color-gold-light));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  max-width: 640px;
  color: var(--color-text-dim);
  font-size: 1.05rem;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 34px;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 1px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(120deg, var(--color-gold), #b8862e);
  color: #14100a;
  box-shadow: 0 8px 24px rgba(212, 169, 78, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 34px rgba(212, 169, 78, 0.5);
}

.btn-outline {
  border-color: rgba(255, 255, 255, 0.35);
  color: var(--color-text);
}

.btn-outline:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  transform: translateY(-3px);
}

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 56px;
  flex-wrap: wrap;
}

.hero-stats .stat strong {
  display: block;
  font-size: 2rem;
  color: var(--color-gold);
  font-weight: 800;
}

.hero-stats .stat span {
  font-size: 0.9rem;
  color: var(--color-text-dim);
  letter-spacing: 1px;
}

/* ---------- 通用区块 ---------- */
.section {
  padding: 96px 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px;
}

.section-kicker {
  color: var(--color-gold);
  letter-spacing: 4px;
  font-size: 0.85rem;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: block;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 16px;
}

.section-head p {
  color: var(--color-text-dim);
}

/* ---------- 特性卡片 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--color-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  padding: 38px 30px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold), transparent);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-line);
  box-shadow: var(--shadow);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  background: rgba(212, 169, 78, 0.12);
  margin-bottom: 22px;
}

.feature-card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--color-text-dim);
  font-size: 0.95rem;
}

/* ---------- 作品/产品卡片 ---------- */
.work-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 28px;
}

.work-card {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: var(--transition);
}

.work-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
  border-color: var(--color-line);
}

.work-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.work-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.work-card:hover .work-thumb img {
  transform: scale(1.08);
}

.work-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(13, 15, 20, 0.8);
  border: 1px solid var(--color-gold);
  color: var(--color-gold);
  font-size: 0.78rem;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: 1px;
}

.work-body {
  padding: 24px;
}

.work-body h3 {
  font-size: 1.12rem;
  margin-bottom: 8px;
}

.work-meta {
  font-size: 0.85rem;
  color: var(--color-gold);
  margin-bottom: 10px;
  letter-spacing: 1px;
}

.work-body p {
  color: var(--color-text-dim);
  font-size: 0.92rem;
  margin-bottom: 16px;
}

.text-link {
  color: var(--color-gold);
  font-size: 0.92rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.text-link:hover {
  gap: 12px;
  color: var(--color-gold-light);
}

/* ---------- 详细内容区 ---------- */
.detail-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 48px;
  align-items: start;
}

.detail-article h2 {
  font-size: 1.6rem;
  margin-bottom: 20px;
}

.detail-article h3 {
  font-size: 1.25rem;
  margin: 32px 0 14px;
  color: var(--color-gold);
}

.detail-article p {
  color: var(--color-text-dim);
  margin-bottom: 16px;
}

.detail-article img {
  border-radius: var(--radius);
  margin: 24px 0;
}

.detail-article ul {
  margin: 0 0 20px 20px;
  list-style: disc;
  color: var(--color-text-dim);
}

.detail-article ul li {
  margin-bottom: 8px;
}

.sidebar-box {
  background: var(--color-bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 28px;
  margin-bottom: 28px;
}

.sidebar-box h3 {
  font-size: 1.05rem;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-line);
  color: var(--color-gold);
}

.sidebar-box ul li {
  margin-bottom: 12px;
}

.sidebar-box ul li a {
  color: var(--color-text-dim);
  font-size: 0.92rem;
}

.sidebar-box ul li a:hover {
  color: var(--color-gold);
}

/* ---------- CTA ---------- */
.cta-section {
  position: relative;
  padding: 110px 0;
  text-align: center;
  background:
    linear-gradient(rgba(13, 15, 20, 0.88), rgba(13, 15, 20, 0.88)),
    radial-gradient(circle at 50% 0%, rgba(212, 169, 78, 0.25), transparent 60%);
}

.cta-section h2 {
  font-size: clamp(1.7rem, 3.6vw, 2.5rem);
  margin-bottom: 18px;
}

.cta-section p {
  color: var(--color-text-dim);
  max-width: 600px;
  margin: 0 auto 36px;
}

/* ---------- 常见问题 ---------- */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  padding: 20px 26px;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  color: var(--color-gold);
  font-size: 1.4rem;
  transition: var(--transition);
}

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

.faq-item summary:hover {
  color: var(--color-gold);
}

.faq-item .faq-answer {
  padding: 0 26px 22px;
  color: var(--color-text-dim);
  font-size: 0.95rem;
}

/* ---------- 新闻列表 ---------- */
.news-list {
  display: grid;
  gap: 26px;
}

.news-item {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 28px;
  background: var(--color-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

.news-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: var(--color-line);
}

.news-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 190px;
}

.news-item-body {
  padding: 26px 26px 26px 0;
}

.news-date {
  color: var(--color-gold);
  font-size: 0.82rem;
  letter-spacing: 1px;
  margin-bottom: 8px;
  display: block;
}

.news-item-body h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.news-item-body p {
  color: var(--color-text-dim);
  font-size: 0.93rem;
  margin-bottom: 14px;
}

/* ---------- 页面横幅(子页) ---------- */
.page-banner {
  position: relative;
  padding: 170px 0 90px;
  text-align: center;
  overflow: hidden;
}

.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(rgba(13, 15, 20, 0.9), rgba(13, 15, 20, 0.82));
  z-index: 1;
}

.page-banner img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.page-banner h1 {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  margin-bottom: 14px;
}

.page-banner p {
  color: var(--color-text-dim);
  max-width: 640px;
  margin: 0 auto;
}

.breadcrumb {
  margin-top: 18px;
  font-size: 0.88rem;
  color: var(--color-text-dim);
}

.breadcrumb a {
  color: var(--color-gold);
}

/* ---------- 联系表单 ---------- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 26px;
  align-items: flex-start;
}

.contact-info-item .icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: 12px;
  background: rgba(212, 169, 78, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}

.contact-info-item h3 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.contact-info-item p {
  color: var(--color-text-dim);
  font-size: 0.93rem;
}

.contact-form {
  background: var(--color-bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  padding: 40px;
}

.form-group {
  margin-bottom: 22px;
}

.form-group label {
  display: block;
  font-size: 0.92rem;
  margin-bottom: 8px;
  color: var(--color-text-dim);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 13px 16px;
  background: var(--color-bg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(212, 169, 78, 0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 130px;
}

/* ---------- 时间线(关于页) ---------- */
.timeline {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
  padding-left: 36px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-gold), rgba(212, 169, 78, 0.1));
}

.timeline-item {
  position: relative;
  padding-bottom: 40px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 8px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 3px solid var(--color-gold);
}

.timeline-item h3 {
  font-size: 1.15rem;
  margin-bottom: 6px;
}

.timeline-item .year {
  color: var(--color-gold);
  font-weight: 700;
  letter-spacing: 1px;
  margin-right: 10px;
}

.timeline-item p {
  color: var(--color-text-dim);
  font-size: 0.95rem;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: #0a0c10;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 70px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 44px;
  padding-bottom: 50px;
}

.footer-brand h3 {
  color: var(--color-gold);
  font-size: 1.2rem;
  margin-bottom: 16px;
}

.footer-brand p {
  color: var(--color-text-dim);
  font-size: 0.9rem;
}

.footer-col h4 {
  font-size: 1rem;
  margin-bottom: 18px;
  color: var(--color-text);
}

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

.footer-col ul li a {
  color: var(--color-text-dim);
  font-size: 0.9rem;
}

.footer-col ul li a:hover {
  color: var(--color-gold);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 22px 0;
  text-align: center;
  color: var(--color-text-dim);
  font-size: 0.85rem;
}

/* ---------- 返回顶部 ---------- */
.back-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(120deg, var(--color-gold), #b8862e);
  color: #14100a;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 900;
  box-shadow: 0 6px 18px rgba(212, 169, 78, 0.4);
}

.back-top.show {
  opacity: 1;
  visibility: visible;
}

.back-top:hover {
  transform: translateY(-4px);
}

/* ---------- 滚动渐入动画 ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero .hero-tag,
.hero h1,
.hero p,
.hero-actions,
.hero-stats {
  animation: heroFadeUp 0.9s ease both;
}

.hero h1 { animation-delay: 0.1s; }
.hero p { animation-delay: 0.22s; }
.hero-actions { animation-delay: 0.34s; }
.hero-stats { animation-delay: 0.46s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .detail-layout,
  .contact-layout {
    grid-template-columns: 1fr;
  }

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

  .news-item {
    grid-template-columns: 1fr;
  }

  .news-item img {
    min-height: 200px;
    max-height: 240px;
  }

  .news-item-body {
    padding: 0 24px 26px;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(13, 15, 20, 0.98);
    padding: 28px 0;
    gap: 22px;
    border-bottom: 1px solid var(--color-line);
    transform: translateY(-130%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .section {
    padding: 68px 0;
  }

  .hero {
    min-height: auto;
    padding: 130px 0 70px;
  }

  .hero-stats {
    gap: 28px;
  }

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

  .contact-form {
    padding: 28px 22px;
  }
}