@charset "UTF-8";

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

:root {
  --ink-black: #08080f;
  --ink-dark: #0f0f1a;
  --ink-deep: #14141f;
  --gold: #d4af37;
  --gold-light: #f0d77b;
  --gold-dim: #8a7424;
  --cinnabar: #b8322a;
  --cinnabar-dark: #8b2820;
  --rice-paper: #f0e8d8;
  --text-gold: #e8c878;
  --text-light: #c8c8d0;
  --text-muted: #6a6a7a;
  --max-width: 1200px;
}

html {
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Microsoft YaHei', 'PingFang SC', sans-serif;
  background: var(--ink-black);
  color: var(--text-light);
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}

a {
  text-decoration: none;
  color: inherit;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}

a:focus, a:active {
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

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

ul {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(8, 8, 15, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  position: relative;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-brand img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  box-shadow: 0 0 16px rgba(212, 175, 55, 0.3);
}

.nav-brand span {
  font-family: 'Noto Serif SC', 'Source Han Serif SC', 'SimSun', 'STSong', serif;
  font-size: 19px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 3px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 48px;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 2px;
  transition: color 0.3s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: all 0.3s;
  transform: translateX(-50%);
}

.nav-links a:hover {
  color: var(--gold);
}

.nav-links a:hover::after {
  width: 100%;
}

.btn-nav {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dim));
  color: var(--ink-black);
  padding: 10px 24px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 2px;
  border: 1px solid var(--gold);
  transition: all 0.3s;
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.2);
}

.btn-nav:hover {
  box-shadow: 0 0 32px rgba(212, 175, 55, 0.5);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--gold);
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--ink-black);
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('../images/hero-bg.jpg') center/cover no-repeat;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 30% 50%, transparent 0%, rgba(8,8,15,0.5) 50%, rgba(8,8,15,0.9) 100%),
    linear-gradient(180deg, rgba(8,8,15,0.6) 0%, transparent 30%, transparent 60%, rgba(8,8,15,0.95) 100%);
  z-index: 1;
}

.hero-mist {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(180deg, transparent, var(--ink-black));
  z-index: 2;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 3;
  width: 100%;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  align-items: center;
}

.hero-left {
  max-width: 560px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border: 1px solid rgba(212, 175, 55, 0.4);
  border-radius: 50px;
  background: rgba(212, 175, 55, 0.08);
  color: var(--gold-light);
  font-size: 12px;
  letter-spacing: 4px;
  margin-bottom: 36px;
}

.hero-badge i {
  font-size: 14px;
}

.hero-title {
  font-family: 'Noto Serif SC', 'Source Han Serif SC', 'SimSun', 'STSong', serif;
  font-size: 88px;
  font-weight: 900;
  line-height: 1.1;
  color: var(--gold);
  margin-bottom: 8px;
  letter-spacing: 8px;
  text-shadow: 0 0 40px rgba(212, 175, 55, 0.3), 0 0 80px rgba(212, 175, 55, 0.15);
}

.hero-subtitle {
  font-family: 'Noto Serif SC', 'Source Han Serif SC', 'SimSun', 'STSong', serif;
  font-size: 22px;
  font-weight: 400;
  color: var(--text-gold);
  letter-spacing: 6px;
  margin-bottom: 24px;
  opacity: 0.85;
}

.hero-desc {
  font-size: 15px;
  line-height: 2;
  color: var(--text-muted);
  margin-bottom: 40px;
  max-width: 440px;
  letter-spacing: 1px;
}

.hero-btns {
  display: flex;
  gap: 16px;
}

.btn-dl {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 32px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 2px;
  transition: all 0.3s;
}

.btn-dl img {
  width: 20px;
  height: 20px;
  filter: brightness(0) invert(1);
}

.btn-dl-gold {
  background: linear-gradient(135deg, var(--gold), var(--gold-dim));
  color: var(--ink-black);
  border: 1px solid var(--gold);
  box-shadow: 0 4px 24px rgba(212, 175, 55, 0.25);
}

.btn-dl-gold:hover {
  box-shadow: 0 6px 36px rgba(212, 175, 55, 0.5);
  transform: translateY(-2px);
}

.btn-dl-outline {
  background: transparent;
  color: var(--gold);
  border: 1px solid rgba(212, 175, 55, 0.5);
}

.btn-dl-outline:hover {
  background: rgba(212, 175, 55, 0.1);
  border-color: var(--gold);
}

.hero-right {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.phone-glow {
  position: absolute;
  width: 340px;
  height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.15) 0%, transparent 70%);
  z-index: 0;
}

.phone-mockup {
  position: relative;
  z-index: 1;
  width: 300px;
  height: 610px;
  background: linear-gradient(145deg, #1a1a2a, #0a0a12);
  border-radius: 42px;
  padding: 12px;
  border: 1px solid rgba(212, 175, 55, 0.3);
  box-shadow: 0 0 60px rgba(212, 175, 55, 0.15), 0 20px 60px rgba(0, 0, 0, 0.6);
  animation: phoneFloat 6s ease-in-out infinite;
}

@keyframes phoneFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}

.phone-screen {
  width: 100%;
  height: 100%;
  border-radius: 32px;
  overflow: hidden;
  background: #000;
}

.phone-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.seal-deco {
  position: absolute;
  z-index: 4;
  width: 72px;
  height: 72px;
  background: var(--cinnabar);
  border: 3px solid var(--cinnabar-dark);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Noto Serif SC', 'SimSun', serif;
  font-size: 28px;
  font-weight: 900;
  color: var(--rice-paper);
  transform: rotate(-8deg);
  box-shadow: 0 4px 24px rgba(184, 50, 42, 0.4);
  opacity: 0.85;
}

.seal-deco.top-right {
  top: 120px;
  right: 8%;
}

.seal-deco.bottom-left {
  bottom: 80px;
  left: 5%;
  width: 56px;
  height: 56px;
  font-size: 22px;
  transform: rotate(12deg);
}

.vert-text {
  position: absolute;
  z-index: 3;
  writing-mode: vertical-rl;
  font-family: 'Noto Serif SC', 'SimSun', serif;
  font-size: 14px;
  color: rgba(212, 175, 55, 0.3);
  letter-spacing: 12px;
  top: 50%;
  right: 20px;
  transform: translateY(-50%);
}

.scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  text-align: center;
}

.scroll-hint i {
  font-size: 28px;
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

.features {
  position: relative;
  padding: 120px 0;
  background: var(--ink-black);
}

.features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-dim), transparent);
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-eyebrow {
  display: inline-block;
  font-family: 'Noto Serif SC', 'SimSun', serif;
  font-size: 13px;
  color: var(--gold-dim);
  letter-spacing: 8px;
  margin-bottom: 16px;
}

.section-title {
  font-family: 'Noto Serif SC', 'Source Han Serif SC', 'SimSun', 'STSong', serif;
  font-size: 42px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 6px;
  margin-bottom: 16px;
}

.section-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.section-divider::before,
.section-divider::after {
  content: '';
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-dim));
}

.section-divider::after {
  background: linear-gradient(90deg, var(--gold-dim), transparent);
}

.section-divider span {
  width: 8px;
  height: 8px;
  background: var(--gold);
  transform: rotate(45deg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  position: relative;
  padding: 48px 36px;
  background: linear-gradient(145deg, rgba(20, 20, 31, 0.8), rgba(10, 10, 18, 0.9));
  border: 1px solid rgba(212, 175, 55, 0.15);
  border-radius: 4px;
  transition: all 0.4s;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  transform: scaleX(0);
  transition: transform 0.4s;
}

.feature-card:hover {
  border-color: rgba(212, 175, 55, 0.5);
  transform: translateY(-4px);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.5), 0 0 32px rgba(212, 175, 55, 0.1);
}

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

.feature-seal {
  width: 56px;
  height: 56px;
  background: var(--cinnabar);
  border: 2px solid var(--cinnabar-dark);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Noto Serif SC', 'SimSun', serif;
  font-size: 24px;
  font-weight: 900;
  color: var(--rice-paper);
  margin-bottom: 28px;
  box-shadow: 0 2px 12px rgba(184, 50, 42, 0.3);
}

.feature-title {
  font-family: 'Noto Serif SC', 'Source Han Serif SC', 'SimSun', 'STSong', serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--gold-light);
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.feature-line {
  width: 32px;
  height: 1px;
  background: var(--gold-dim);
  margin: 20px 0;
}

.feature-desc {
  font-size: 14px;
  line-height: 2;
  color: var(--text-muted);
  letter-spacing: 1px;
}

.download {
  position: relative;
  padding: 140px 0;
  overflow: hidden;
  background: var(--ink-deep);
}

.download-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('../images/download-bg.jpg') center/cover no-repeat;
  opacity: 0.4;
  z-index: 0;
}

.download-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, rgba(8,8,15,0.5), rgba(8,8,15,0.9));
  z-index: 1;
}

.download-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.download-title {
  font-family: 'Noto Serif SC', 'Source Han Serif SC', 'SimSun', 'STSong', serif;
  font-size: 48px;
  font-weight: 700;
  color: var(--text-light);
  letter-spacing: 6px;
  margin-bottom: 16px;
  line-height: 1.4;
}

.download-title .highlight {
  color: var(--gold);
  text-shadow: 0 0 40px rgba(212, 175, 55, 0.4);
}

.download-desc {
  font-size: 16px;
  color: var(--text-muted);
  letter-spacing: 3px;
  margin-bottom: 48px;
}

.download-btns {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 18px 40px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 2px;
  transition: all 0.3s;
}

.btn-download img {
  width: 24px;
  height: 24px;
  filter: brightness(0) invert(1);
}

.btn-android {
  background: linear-gradient(135deg, var(--gold), var(--gold-dim));
  color: var(--ink-black);
  border: 1px solid var(--gold);
  box-shadow: 0 4px 32px rgba(212, 175, 55, 0.3);
}

.btn-android:hover {
  box-shadow: 0 8px 48px rgba(212, 175, 55, 0.6);
  transform: translateY(-3px);
}

.btn-ios {
  background: transparent;
  color: var(--gold);
  border: 1px solid rgba(212, 175, 55, 0.5);
}

.btn-ios:hover {
  background: rgba(212, 175, 55, 0.1);
  border-color: var(--gold);
  transform: translateY(-3px);
}

.footer {
  background: var(--ink-black);
  padding: 48px 0 32px;
  border-top: 1px solid rgba(212, 175, 55, 0.1);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

.footer-brand span {
  font-family: 'Noto Serif SC', 'SimSun', serif;
  font-size: 15px;
  color: var(--gold-dim);
  letter-spacing: 2px;
}

.footer-links {
  display: flex;
  gap: 32px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 13px;
  letter-spacing: 1px;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: var(--gold);
}

.footer-copy {
  color: rgba(106, 106, 122, 0.5);
  font-size: 12px;
  letter-spacing: 1px;
}

@media (max-width: 968px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 60px;
    text-align: center;
  }

  .hero-left {
    max-width: 100%;
  }

  .hero-title {
    font-size: 56px;
    letter-spacing: 4px;
  }

  .hero-subtitle {
    font-size: 18px;
  }

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

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

  .hero-right {
    order: -1;
  }

  .phone-mockup {
    width: 240px;
    height: 490px;
  }

  .phone-glow {
    width: 280px;
    height: 510px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .section-title {
    font-size: 32px;
  }

  .download-title {
    font-size: 32px;
  }

  .vert-text {
    display: none;
  }

  .seal-deco.top-right {
    top: 100px;
    right: 5%;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(8, 8, 15, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 20px 32px;
    gap: 0;
    border-bottom: 1px solid rgba(212, 175, 55, 0.15);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links li {
    padding: 14px 0;
    border-bottom: 1px solid rgba(212, 175, 55, 0.08);
  }

  .nav-links li:last-child {
    border-bottom: none;
  }

  .nav-toggle {
    display: block;
  }

  .btn-nav {
    display: none;
  }
}

@media (max-width: 600px) {
  .container {
    padding: 0 20px;
  }

  .hero-title {
    font-size: 42px;
    letter-spacing: 2px;
  }

  .hero-subtitle {
    font-size: 15px;
    letter-spacing: 3px;
  }

  .hero-desc {
    font-size: 13px;
  }

  .hero-btns {
    flex-direction: column;
    align-items: center;
  }

  .btn-dl {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }

  .phone-mockup {
    width: 200px;
    height: 410px;
  }

  .phone-glow {
    width: 240px;
    height: 430px;
  }

  .features {
    padding: 80px 0;
  }

  .feature-card {
    padding: 36px 28px;
  }

  .download-btns {
    flex-direction: column;
    align-items: center;
  }

  .btn-download {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }

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

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
  }

  .seal-deco {
    display: none;
  }
}