/* ============================================
   自媒体创作平台 - 主样式表
   独特配色：深紫 + 琥珀金 + 暗灰
   ============================================ */

/* CSS Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #6B21A8;
  --primary-light: #9333EA;
  --primary-dark: #4C1D95;
  --accent: #D97706;
  --accent-light: #F59E0B;
  --bg-dark: #0F0A1A;
  --bg-card: #1A1128;
  --bg-section: #130E20;
  --text-main: #E8E0F0;
  --text-muted: #A89BBE;
  --text-bright: #FFFFFF;
  --border-color: #2D2245;
  --success: #10B981;
  --danger: #EF4444;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-card: 0 4px 24px rgba(107, 33, 168, 0.15);
  --shadow-hover: 0 8px 40px rgba(107, 33, 168, 0.25);
  --font-main: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-heading: "Noto Serif SC", "STSong", serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.75;
  overflow-x: hidden;
  min-height: 100vh;
}

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

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

a:hover {
  color: var(--accent);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-bright);
  line-height: 1.3;
  margin-bottom: 0.6em;
}

h1 { font-size: 2.2rem; }
h2 { font-size: 1.75rem; border-left: 4px solid var(--accent); padding-left: 16px; }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.15rem; }

p {
  margin-bottom: 1em;
  color: var(--text-main);
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== HEADER / NAV (Non-sticky) ===== */
.site-header {
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary-dark) 100%);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 0;
  position: relative; /* NOT sticky */
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.site-logo img {
  height: 42px;
  width: auto;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.main-nav a {
  color: var(--text-main);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  transition: all var(--transition);
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  background: var(--primary);
  color: var(--text-bright);
}

.nav-toggle {
  display: none;
  background: var(--primary);
  border: none;
  color: white;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 1.4rem;
  cursor: pointer;
}

/* ===== HERO SECTION ===== */
.hero-section {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(160deg, var(--primary-dark) 0%, var(--bg-dark) 60%, #1a0a2e 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  opacity: 0.25;
  object-fit: cover;
  width: 100%;
  height: 100%;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 60px 0;
  max-width: 700px;
}

.hero-content h1 {
  font-size: 2.6rem;
  margin-bottom: 16px;
  background: linear-gradient(90deg, var(--text-bright), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.btn-cta {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  color: var(--bg-dark);
  padding: 14px 36px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1.05rem;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(217, 119, 6, 0.3);
}

.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(217, 119, 6, 0.5);
  color: var(--bg-dark);
}

/* ===== SECTION COMMON ===== */
.section {
  padding: 60px 0;
}

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

.section-title {
  text-align: center;
  margin-bottom: 40px;
}

.section-title h2 {
  border: none;
  padding: 0;
  display: inline-block;
  position: relative;
}

.section-title h2::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: var(--accent);
  margin: 10px auto 0;
  border-radius: 2px;
}

.section-title p {
  color: var(--text-muted);
  margin-top: 8px;
}

/* ===== CARD GRID ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-light);
}

.card-img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.card-body {
  padding: 20px;
}

.card-body h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.card-body p {
  font-size: 0.92rem;
  color: var(--text-muted);
}

.card-tag {
  display: inline-block;
  background: var(--primary);
  color: white;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.78rem;
  margin-top: 10px;
}

/* ===== VIDEO PLAYER ===== */
.video-wrapper {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #000;
  aspect-ratio: 16/9;
}

.video-wrapper video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-dark), var(--bg-dark));
  color: var(--text-muted);
}

.video-placeholder .play-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  cursor: pointer;
  transition: all var(--transition);
}

.video-placeholder .play-icon:hover {
  transform: scale(1.1);
  background: var(--accent-light);
}

.play-icon::after {
  content: "";
  display: block;
  width: 0;
  height: 0;
  border-left: 20px solid white;
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  margin-left: 4px;
}

/* ===== RECRUITMENT ===== */
.recruitment-section {
  background: linear-gradient(135deg, #1a0520 0%, var(--primary-dark) 50%, #0a1020 100%);
  border: 1px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin: 40px 0;
  position: relative;
  overflow: hidden;
}

.recruitment-section::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(217,119,6,0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.recruitment-badge {
  display: inline-block;
  background: var(--accent);
  color: var(--bg-dark);
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 16px;
}

/* ===== MOVIE REVIEW ===== */
.review-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: start;
}

.review-block img {
  border-radius: var(--radius-md);
  width: 100%;
}

.rating-stars {
  color: var(--accent-light);
  font-size: 1.3rem;
  letter-spacing: 2px;
}

/* ===== CASE STUDIES ===== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}

.case-item:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-hover);
}

.case-item img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}

.case-item-body {
  padding: 16px;
}

/* ===== ABOUT SECTION ===== */
.about-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  align-items: start;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.stat-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
}

.stat-box .num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-light);
  display: block;
}

.stat-box .label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===== PAYMENT ===== */
.payment-icons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

.payment-icons img {
  height: 48px;
  width: auto;
  border-radius: var(--radius-sm);
}

/* ===== LICENSE ===== */
.license-grid {
  display: flex;
  gap: 24px;
  align-items: center;
  flex-wrap: wrap;
}

.license-grid img {
  height: 100px;
  width: auto;
  border-radius: var(--radius-sm);
}

/* ===== SUPPORT ===== */
.support-channels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.support-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  transition: all var(--transition);
}

.support-card:hover {
  border-color: var(--primary-light);
}

.support-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

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

.faq-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--bg-card);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  color: var(--text-bright);
  padding: 18px 24px;
  font-size: 1.05rem;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-main);
  transition: background var(--transition);
}

.faq-question:hover {
  background: rgba(107, 33, 168, 0.15);
}

.faq-question .arrow {
  transition: transform var(--transition);
  font-size: 1.2rem;
  color: var(--accent);
}

.faq-item.open .faq-question .arrow {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-answer-inner {
  padding: 0 24px 18px;
  color: var(--text-muted);
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

/* ===== USER REVIEWS ===== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all var(--transition);
}

.review-card:hover {
  border-color: var(--primary-light);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.review-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
}

.review-meta .name {
  font-weight: 700;
  color: var(--text-bright);
}

.review-meta .city {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.review-stars {
  color: var(--accent-light);
  margin-bottom: 8px;
}

.review-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 10px;
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  padding: 12px 0;
  font-size: 0.88rem;
}

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

.breadcrumb a:hover {
  color: var(--accent-light);
}

.breadcrumb span {
  color: var(--text-muted);
  margin: 0 6px;
}

.breadcrumb .current {
  color: var(--text-bright);
}

/* ===== FOOTER ===== */
.site-footer {
  background: linear-gradient(180deg, var(--bg-section) 0%, #050210 100%);
  border-top: 1px solid var(--border-color);
  padding: 50px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-bottom: 30px;
}

.footer-col h4 {
  color: var(--accent-light);
  margin-bottom: 16px;
  font-size: 1rem;
}

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

.footer-col ul li {
  margin-bottom: 8px;
}

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

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

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 12px;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--border-color);
  transition: all var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
}

.footer-social img {
  width: 20px;
  height: 20px;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
}

.footer-payments {
  display: flex;
  gap: 10px;
}

.footer-payments img {
  height: 32px;
  width: auto;
  border-radius: 4px;
}

/* ===== APP DOWNLOAD PAGE ===== */
.app-hero {
  text-align: center;
  padding: 60px 20px;
  background: linear-gradient(160deg, var(--primary-dark), var(--bg-dark));
}

.app-screenshots {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 30px 0;
}

.app-screenshots img {
  width: 160px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.download-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: white;
  padding: 14px 28px;
  border-radius: 50px;
  font-weight: 600;
  transition: all var(--transition);
}

.download-btn:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  color: white;
}

/* ===== INNER PAGE ===== */
.inner-hero {
  padding: 50px 0 30px;
  background: linear-gradient(160deg, var(--primary-dark) 0%, var(--bg-dark) 100%);
}

.inner-content {
  padding: 40px 0;
}

.inner-content article {
  max-width: 860px;
  margin: 0 auto;
}

.inner-content article img {
  border-radius: var(--radius-md);
  margin: 20px 0;
}

.content-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin: 30px 0;
}

.feature-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all var(--transition);
}

.feature-box:hover {
  border-color: var(--accent);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 10px;
}

/* ===== RESPONSIBLE SECTION ===== */
.responsible-section {
  background: linear-gradient(135deg, #0a1a10, #0a100a);
  border: 1px solid #1a3a20;
  border-radius: var(--radius-lg);
  padding: 30px;
  margin: 30px 0;
}

/* ===== MOBILE RESPONSIVE ===== */
@media (max-width: 768px) {
  html { font-size: 15px; }

  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.4rem; }

  .nav-toggle { display: block; }

  .main-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    background: var(--bg-dark);
    padding: 12px;
    border-radius: var(--radius-md);
  }

  .main-nav.open { display: flex; }

  .main-nav a {
    width: 100%;
    padding: 12px 16px;
  }

  .hero-content { padding: 40px 0; }
  .hero-content h1 { font-size: 2rem; }

  .review-block {
    grid-template-columns: 1fr;
  }

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

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

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .recruitment-section {
    padding: 24px;
  }

  .section { padding: 40px 0; }
}

@media (max-width: 480px) {
  html { font-size: 14px; }

  .container { padding: 0 14px; }

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

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

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

  .hero-content h1 { font-size: 1.6rem; }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeInUp 0.6s ease forwards;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* ===== SCHEMA HIDDEN ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}