/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; color: #1a1a2e; line-height: 1.6; background: #fff; overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

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

/* ===== Buttons ===== */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; border-radius: 50px; font-size: 15px; font-weight: 600; cursor: pointer; border: none; transition: all .3s ease; }
.btn-primary { background: linear-gradient(135deg, #FFD700, #FFA500); color: #1a1a2e; box-shadow: 0 4px 15px rgba(255,165,0,.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(255,165,0,.45); }
.btn-sm { padding: 8px 20px; font-size: 13px; }
.btn-lg { padding: 16px 36px; font-size: 17px; }

/* ===== Header ===== */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(255,255,255,.95); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(0,0,0,.06); transition: box-shadow .3s; }
.header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,.08); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 20px; }
.logo-icon { font-size: 28px; }
.logo-text { background: linear-gradient(135deg, #FFD700, #FF8C00); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav { display: flex; gap: 32px; }
.nav a { font-size: 15px; font-weight: 500; color: #555; transition: color .3s; }
.nav a:hover { color: #FFA500; }
.header-download-btn { display: inline-flex; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { width: 24px; height: 2px; background: #333; border-radius: 2px; transition: .3s; }

/* ===== Hero ===== */
.hero { padding: 140px 0 80px; background: linear-gradient(180deg, #FFF9E6 0%, #FFFFFF 100%); position: relative; overflow: hidden; }
.hero::before { content: ''; position: absolute; top: -200px; right: -200px; width: 600px; height: 600px; background: radial-gradient(circle, rgba(255,215,0,.15) 0%, transparent 70%); border-radius: 50%; }
.hero-inner { display: flex; align-items: center; gap: 60px; }
.hero-content { flex: 1; }
.hero-title { font-size: 56px; font-weight: 800; line-height: 1.15; margin-bottom: 16px; background: linear-gradient(135deg, #FFD700, #FF8C00); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-subtitle { font-size: 24px; font-weight: 600; color: #333; margin-bottom: 12px; }
.hero-desc { font-size: 15px; color: #777; margin-bottom: 32px; }
.hero-cta { display: flex; align-items: center; gap: 16px; margin-bottom: 12px; }
.hero-platform { background: #e8f5e9; color: #2e7d32; padding: 6px 14px; border-radius: 20px; font-size: 13px; font-weight: 600; }
.hero-version { font-size: 13px; color: #999; margin-bottom: 4px; }
.hero-ios-hint { font-size: 13px; color: #bbb; }
.hero-visual { flex-shrink: 0; }

/* ===== Phone Mockup ===== */
.phone-mockup { background: #1a1a2e; border-radius: 36px; padding: 12px; box-shadow: 0 25px 60px rgba(0,0,0,.18); position: relative; }
.phone-mockup::before { content: ''; position: absolute; top: 12px; left: 50%; transform: translateX(-50%); width: 80px; height: 6px; background: #333; border-radius: 3px; z-index: 2; }
.phone-screen { background: #fff; border-radius: 26px; overflow: hidden; position: relative; }
.phone-hero { width: 280px; }
.phone-hero .phone-screen { height: 520px; }
.phone-sm { width: 220px; }
.phone-sm .phone-screen { height: 400px; }

/* Hero Phone Screen Content */
.mock-header { padding: 24px 16px 12px; font-size: 14px; font-weight: 700; color: #333; display: flex; align-items: center; gap: 6px; }
.mock-logo { font-size: 18px; }
.mock-banner { margin: 0 12px 12px; padding: 16px; background: linear-gradient(135deg, #FFD700, #FFA500); border-radius: 12px; color: #1a1a2e; font-weight: 700; font-size: 16px; text-align: center; }
.mock-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; padding: 0 12px; }
.mock-card { height: 70px; border-radius: 8px; }
.mock-nav { position: absolute; bottom: 0; left: 0; right: 0; display: flex; justify-content: space-around; padding: 10px 0; background: #fff; border-top: 1px solid #eee; font-size: 11px; color: #999; }
.mock-nav .active { color: #FFA500; font-weight: 600; }

/* Screenshot Phone Screen Content */
.mock-section-title { padding: 8px 12px 4px; font-size: 12px; font-weight: 700; color: #333; }
.mock-list { padding: 0 12px; }
.mock-list-item { display: flex; gap: 10px; padding: 6px 0; align-items: center; }
.mock-thumb { width: 48px; height: 36px; border-radius: 6px; flex-shrink: 0; }
.mock-text { flex: 1; }
.mock-line { height: 8px; background: #e0e0e0; border-radius: 4px; margin-bottom: 4px; }
.w50 { width: 50%; }
.w60 { width: 60%; }
.w70 { width: 70%; }
.w80 { width: 80%; }
.w90 { width: 90%; }
.w100 { width: 100%; }

/* Detail screen */
.mock-detail-cover { height: 120px; margin: 0 12px; border-radius: 10px; }
.mock-detail-info { padding: 12px; }
.mock-btn { margin: 0 12px; padding: 8px; background: linear-gradient(135deg, #FFD700, #FFA500); border-radius: 8px; text-align: center; font-size: 12px; font-weight: 700; color: #1a1a2e; }
.mock-episodes { display: flex; flex-wrap: wrap; gap: 6px; padding: 12px; }
.mock-episodes span { padding: 4px 10px; background: #f0f0f0; border-radius: 4px; font-size: 10px; color: #666; }

/* Player screen */
.screen-dark { background: #111; }
.screen-dark .mock-header { color: #fff; }
.mock-player { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100%; padding: 20px; }
.mock-play-btn { font-size: 48px; color: #FFD700; margin-bottom: 20px; }
.mock-progress { width: 80%; height: 4px; background: rgba(255,255,255,.2); border-radius: 2px; overflow: hidden; }
.mock-progress-bar { width: 45%; height: 100%; background: #FFD700; border-radius: 2px; }
.mock-player-controls { display: flex; justify-content: space-between; width: 80%; margin-top: 16px; color: rgba(255,255,255,.6); font-size: 12px; }
.mock-episode-select { margin-top: 16px; padding: 6px 16px; background: rgba(255,255,255,.1); border-radius: 16px; color: #fff; font-size: 12px; }

/* Profile screen */
.mock-avatar-area { text-align: center; padding: 16px; }
.mock-avatar { width: 48px; height: 48px; background: #f0f0f0; border-radius: 50%; margin: 0 auto; display: flex; align-items: center; justify-content: center; font-size: 24px; }
.mock-menu-list { padding: 0 12px; }
.mock-menu-item { padding: 10px 12px; border-bottom: 1px solid #f0f0f0; font-size: 13px; color: #555; display: flex; align-items: center; gap: 8px; }

/* ===== Trust Section ===== */
.trust { padding: 40px 0; background: #fafafa; border-top: 1px solid #f0f0f0; border-bottom: 1px solid #f0f0f0; }
.trust-grid { display: flex; justify-content: center; gap: 40px; flex-wrap: wrap; margin-bottom: 16px; }
.trust-item { display: flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 500; color: #333; }
.trust-icon { color: #4CAF50; font-weight: 700; font-size: 18px; }
.trust-note { text-align: center; font-size: 13px; color: #999; }

/* ===== Section Common ===== */
.section-title { font-size: 36px; font-weight: 800; text-align: center; margin-bottom: 12px; color: #1a1a2e; }
.section-desc { text-align: center; font-size: 16px; color: #888; margin-bottom: 48px; }
.left-align { text-align: left; }
.cta-center { text-align: center; margin-top: 48px; }

/* ===== Screenshots ===== */
.screenshots { padding: 100px 0; background: linear-gradient(180deg, #fff 0%, #FFF9E6 100%); }
.screenshots-grid { display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; }
.screenshot-item { text-align: center; }
.screenshot-label { margin-top: 16px; font-size: 16px; font-weight: 700; color: #333; }
.screenshot-desc { font-size: 13px; color: #999; margin-top: 4px; }
.screenshots-side-text { margin-top: 48px; text-align: center; }
.screenshots-side-text h3 { font-size: 24px; font-weight: 700; margin-bottom: 16px; color: #1a1a2e; }
.screenshots-side-text ul { display: flex; justify-content: center; gap: 32px; flex-wrap: wrap; }
.screenshots-side-text li { font-size: 15px; color: #666; position: relative; padding-left: 20px; }
.screenshots-side-text li::before { content: '✓'; position: absolute; left: 0; color: #4CAF50; font-weight: 700; }

/* ===== Features ===== */
.features { padding: 100px 0; background: #fff; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card { background: #fff; border: 1px solid #f0f0f0; border-radius: 16px; padding: 32px 24px; transition: all .3s ease; position: relative; overflow: hidden; }
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,.08); border-color: #FFD700; }
.feature-num { position: absolute; top: 16px; right: 20px; font-size: 48px; font-weight: 900; color: rgba(255,215,0,.15); line-height: 1; }
.feature-icon { font-size: 36px; margin-bottom: 16px; }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; color: #1a1a2e; }
.feature-card p { font-size: 14px; color: #888; line-height: 1.7; }

/* ===== Hot Content ===== */
.hot { padding: 100px 0; background: linear-gradient(180deg, #FFF9E6 0%, #fff 100%); }
.hot-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.hot-card { border-radius: 16px; overflow: hidden; background: #fff; box-shadow: 0 4px 16px rgba(0,0,0,.06); transition: all .3s ease; cursor: pointer; }
.hot-card:hover { transform: translateY(-6px); box-shadow: 0 12px 32px rgba(0,0,0,.12); }
.hot-cover { height: 200px; position: relative; display: flex; flex-direction: column; justify-content: space-between; padding: 12px; }
.hot-badge { background: rgba(0,0,0,.5); color: #fff; padding: 4px 10px; border-radius: 20px; font-size: 11px; font-weight: 600; align-self: flex-start; backdrop-filter: blur(4px); }
.hot-episodes { background: rgba(255,215,0,.9); color: #1a1a2e; padding: 2px 10px; border-radius: 10px; font-size: 11px; font-weight: 700; align-self: flex-end; }
.hot-info { padding: 14px; }
.hot-info h3 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.hot-tag { font-size: 12px; color: #999; }

/* ===== Categories ===== */
.categories { padding: 100px 0; background: #fff; }
.category-tags { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.category-tag { padding: 12px 28px; background: linear-gradient(135deg, #FFF9E6, #FFF0CC); border: 2px solid #FFD700; border-radius: 50px; font-size: 15px; font-weight: 600; color: #b8860b; transition: all .3s; cursor: default; }
.category-tag:hover { background: linear-gradient(135deg, #FFD700, #FFA500); color: #fff; border-color: transparent; transform: scale(1.05); }
.category-note { text-align: center; margin-top: 24px; font-size: 14px; color: #bbb; }

/* ===== Scenarios ===== */
.scenarios { padding: 100px 0; background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%); color: #fff; overflow: hidden; }
.scenarios-inner { display: flex; align-items: center; gap: 60px; }
.scenarios-text { flex: 1; }
.scenarios .section-title { color: #fff; }
.scenarios .section-desc { color: rgba(255,255,255,.5); }
.scenario-list { display: flex; flex-direction: column; gap: 20px; margin-top: 32px; }
.scenario-item { display: flex; gap: 16px; align-items: flex-start; }
.scenario-icon { font-size: 32px; flex-shrink: 0; width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; background: rgba(255,215,0,.1); border-radius: 16px; }
.scenario-item h4 { font-size: 16px; font-weight: 700; margin-bottom: 4px; color: #FFD700; }
.scenario-item p { font-size: 14px; color: rgba(255,255,255,.6); }
.scenarios-visual { flex-shrink: 0; position: relative; }
.scenario-phone { transform: rotate(3deg); }
.float-card { position: absolute; background: rgba(255,255,255,.12); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,.15); border-radius: 12px; padding: 10px 16px; font-size: 13px; color: #fff; white-space: nowrap; animation: floatCard 3s ease-in-out infinite; }
.float-card-1 { top: 40px; left: -80px; animation-delay: 0s; }
.float-card-2 { bottom: 60px; right: -60px; animation-delay: 1.5s; }
@keyframes floatCard { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* ===== Version ===== */
.version { padding: 100px 0; background: #fafafa; }
.version-table-wrap { max-width: 600px; margin: 0 auto; }
.version-table { width: 100%; border-collapse: collapse; }
.version-table td { padding: 14px 20px; border-bottom: 1px solid #eee; font-size: 15px; }
.version-table tr:last-child td { border-bottom: none; }
.version-table td:first-child { font-weight: 600; color: #555; width: 40%; background: #fff; border-radius: 8px 0 0 8px; }
.version-table td:last-child { color: #333; background: #fafafa; border-radius: 0 8px 8px 0; }

/* ===== Tutorial ===== */
.tutorial { padding: 100px 0; background: #fff; }
.steps { max-width: 600px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; }
.step { display: flex; align-items: center; gap: 20px; width: 100%; }
.step-num { width: 48px; height: 48px; background: linear-gradient(135deg, #FFD700, #FFA500); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 800; color: #1a1a2e; flex-shrink: 0; }
.step-content { flex: 1; background: #fafafa; border-radius: 12px; padding: 16px 20px; }
.step-content h4 { font-size: 16px; font-weight: 700; color: #1a1a2e; margin-bottom: 4px; }
.step-content p { font-size: 14px; color: #888; }
.step-line { width: 2px; height: 24px; background: #FFD700; margin: 0 0 0 23px; }
.tutorial-note { max-width: 600px; margin: 32px auto 0; background: #FFF9E6; border-left: 4px solid #FFD700; border-radius: 0 12px 12px 0; padding: 16px 20px; }
.tutorial-note p { font-size: 14px; color: #666; line-height: 1.7; }

/* ===== QR Section ===== */
.qr-section { padding: 80px 0; background: linear-gradient(180deg, #fff 0%, #FFF9E6 100%); }
.qr-inner { display: flex; justify-content: center; gap: 40px; flex-wrap: wrap; }
.qr-card { background: #fff; border-radius: 20px; padding: 40px; text-align: center; box-shadow: 0 8px 32px rgba(0,0,0,.08); min-width: 300px; }
.qr-card h2 { font-size: 24px; font-weight: 800; margin-bottom: 8px; color: #1a1a2e; }
.qr-card p { font-size: 14px; color: #888; margin-bottom: 20px; line-height: 1.6; }
.qr-placeholder { display: inline-flex; align-items: center; justify-content: center; background: #f8f8f8; border-radius: 12px; padding: 16px; }
.qr-mobile-view { display: none; }

/* ===== FAQ ===== */
.faq { padding: 100px 0; background: #fff; }
.faq-list { max-width: 700px; margin: 0 auto; }
.faq-item { border: 1px solid #f0f0f0; border-radius: 12px; margin-bottom: 12px; overflow: hidden; transition: all .3s; }
.faq-item.active { border-color: #FFD700; box-shadow: 0 4px 16px rgba(255,215,0,.12); }
.faq-question { width: 100%; display: flex; justify-content: space-between; align-items: center; padding: 18px 24px; background: none; border: none; cursor: pointer; font-size: 16px; font-weight: 600; color: #333; text-align: left; }
.faq-arrow { font-size: 22px; color: #FFD700; font-weight: 300; transition: transform .3s; }
.faq-item.active .faq-arrow { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-answer p { padding: 0 24px 18px; font-size: 14px; color: #777; line-height: 1.8; }

/* ===== Footer ===== */
.footer { padding: 60px 0 100px; background: #1a1a2e; color: #fff; }
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; padding-bottom: 32px; border-bottom: 1px solid rgba(255,255,255,.1); }
.footer-brand p { font-size: 14px; color: rgba(255,255,255,.4); margin-top: 8px; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: 14px; color: rgba(255,255,255,.6); transition: color .3s; }
.footer-links a:hover { color: #FFD700; }
.footer-bottom { padding-top: 24px; text-align: center; }
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,.3); }

/* ===== Mobile Bar ===== */
.mobile-bar { display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 999; background: rgba(255,255,255,.97); backdrop-filter: blur(12px); border-top: 1px solid #eee; padding: 10px 16px; }
.mobile-bar-inner { display: flex; align-items: center; justify-content: space-between; }
.mobile-bar-title { font-weight: 700; font-size: 15px; }
.mobile-bar-ver { font-size: 11px; color: #999; margin-left: 8px; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-inner { flex-direction: column; text-align: center; }
  .hero-title { font-size: 42px; }
  .hero-cta { justify-content: center; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .hot-grid { grid-template-columns: repeat(3, 1fr); }
  .scenarios-inner { flex-direction: column; text-align: center; }
  .scenarios .section-title { text-align: center; }
  .scenarios .section-desc { text-align: center; }
}

@media (max-width: 768px) {
  .nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 20px; gap: 16px; border-bottom: 1px solid #eee; box-shadow: 0 8px 20px rgba(0,0,0,.08); }
  .nav.open { display: flex; }
  .nav-toggle { display: flex; }
  .header-download-btn { display: none; }
  .hero { padding: 120px 0 60px; }
  .hero-title { font-size: 36px; }
  .hero-subtitle { font-size: 20px; }
  .hero-visual { display: none; }
  .section-title { font-size: 28px; }
  .features-grid { grid-template-columns: 1fr; }
  .hot-grid { grid-template-columns: repeat(2, 1fr); }
  .screenshots-grid { gap: 16px; }
  .phone-sm { width: 160px; }
  .phone-sm .phone-screen { height: 300px; }
  .trust-grid { gap: 20px; }
  .trust-item { font-size: 13px; }
  .qr-card { min-width: 260px; padding: 28px; }
  .qr-mobile-view { display: block; }
  .qr-placeholder svg { width: 100px; height: 100px; }
  .footer { padding-bottom: 80px; }
  .footer-inner { flex-direction: column; gap: 24px; align-items: center; text-align: center; }
  .mobile-bar { display: block; }
  .scenarios-visual { display: none; }
  .scenario-list { gap: 16px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 30px; }
  .hot-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .hot-cover { height: 150px; }
  .screenshots-grid { flex-direction: column; align-items: center; }
  .phone-sm { width: 200px; }
  .phone-sm .phone-screen { height: 360px; }
  .category-tag { padding: 8px 20px; font-size: 13px; }
  .step { flex-direction: column; text-align: center; gap: 12px; }
  .step-line { width: 2px; height: 16px; margin: 0 auto; }
}