@charset "UTF-8";

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

html,
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", serif;
  color: #2c2c2c;
  background-color: #f5efe0;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

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

a:active,
a:hover,
a:focus {
  outline: 0;
  -webkit-tap-highlight-color: transparent;
}

ul,
ol {
  list-style: none;
}

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

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 99;
  background: rgba(245, 239, 224, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(201, 169, 110, 0.3);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 700;
  color: #2c2c2c;
  letter-spacing: 2px;
}

.logo-wrap img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(44, 44, 44, 0.12);
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 36px;
}

.main-nav a {
  position: relative;
  font-size: 15px;
  color: #3e5c6e;
  padding: 6px 2px;
  transition: color 0.25s ease;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: #c9a96e;
  transition: width 0.3s ease;
}

.main-nav a:hover {
  color: #8b1a1a;
}

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

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: rgba(62, 92, 110, 0.08);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: #3e5c6e;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.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 {
  position: relative;
  overflow: hidden;
  padding: 80px 0 100px;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(139, 26, 26, 0.05), transparent 50%),
    radial-gradient(ellipse at 80% 90%, rgba(62, 92, 110, 0.08), transparent 55%),
    linear-gradient(180deg, #f5efe0 0%, #efe8d6 100%);
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  pointer-events: none;
  opacity: 0.18;
}

.hero::before {
  top: -40px;
  left: -40px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, #8b1a1a 0%, transparent 70%);
  filter: blur(30px);
}

.hero::after {
  bottom: -80px;
  right: -60px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, #3e5c6e 0%, transparent 70%);
  filter: blur(40px);
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
}

.hero-logo {
  width: 110px;
  height: 110px;
  margin: 0 auto 28px;
  border-radius: 28px;
  box-shadow:
    0 14px 40px rgba(44, 44, 44, 0.18),
    0 0 0 3px rgba(201, 169, 110, 0.4);
}

.hero-title {
  font-size: 44px;
  font-weight: 800;
  letter-spacing: 6px;
  color: #2c2c2c;
  margin-bottom: 16px;
  text-shadow: 0 2px 0 rgba(201, 169, 110, 0.15);
}

.hero-subtitle {
  font-size: 20px;
  color: #8b1a1a;
  letter-spacing: 8px;
  margin-bottom: 32px;
  font-weight: 600;
}

.hero-desc {
  max-width: 680px;
  margin: 0 auto 48px;
  font-size: 16px;
  color: #3e5c6e;
  line-height: 2;
}

.hero-desc span {
  display: inline-block;
  margin: 0 10px;
  padding: 4px 16px;
  border: 1px solid rgba(201, 169, 110, 0.5);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.4);
}

.hero-btns {
  display: flex;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
}

.dl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-width: 220px;
  padding: 18px 32px;
  border-radius: 14px;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 2px;
  transition: transform 0.2s ease, box-shadow 0.25s ease;
  position: relative;
  overflow: hidden;
}

.dl-btn .icon {
  font-size: 22px;
}

.dl-btn-android {
  background: linear-gradient(135deg, #a81818 0%, #8b1a1a 50%, #6b1212 100%);
  box-shadow:
    0 8px 22px rgba(139, 26, 26, 0.3),
    inset 0 0 0 1px rgba(201, 169, 110, 0.4);
}

.dl-btn-apple {
  background: linear-gradient(135deg, #3c3c3c 0%, #2c2c2c 50%, #1a1a1a 100%);
  box-shadow:
    0 8px 22px rgba(44, 44, 44, 0.28),
    inset 0 0 0 1px rgba(201, 169, 110, 0.4);
}

.dl-btn:hover {
  transform: translateY(-3px);
}

.dl-btn:active {
  transform: translateY(0);
}

.section {
  padding: 90px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title h2 {
  display: inline-block;
  position: relative;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 4px;
  color: #2c2c2c;
  padding: 0 40px;
}

.section-title h2::before,
.section-title h2::after {
  content: "◆";
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: #c9a96e;
  font-size: 14px;
}

.section-title h2::before {
  left: 0;
}

.section-title h2::after {
  right: 0;
}

.section-title p {
  margin-top: 14px;
  color: #3e5c6e;
  font-size: 14px;
  letter-spacing: 3px;
}

.features {
  background: linear-gradient(180deg, #efe8d6 0%, #f5efe0 100%);
  position: relative;
}

.features::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  max-width: 900px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201, 169, 110, 0.6), transparent);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  position: relative;
  padding: 38px 26px 34px;
  background: #fbf7ec;
  border-radius: 18px;
  border: 1px solid rgba(201, 169, 110, 0.25);
  box-shadow: 0 6px 20px rgba(44, 44, 44, 0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  text-align: center;
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: rgba(139, 26, 26, 0.35);
  box-shadow: 0 14px 36px rgba(139, 26, 26, 0.12);
}

.feature-card::after {
  content: "印";
  position: absolute;
  top: 14px;
  right: 14px;
  width: 28px;
  height: 28px;
  border-radius: 4px;
  background: rgba(139, 26, 26, 0.85);
  color: #f5efe0;
  font-size: 14px;
  font-weight: 700;
  line-height: 28px;
  letter-spacing: 0;
  transform: rotate(-6deg);
  opacity: 0.6;
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(201, 169, 110, 0.15), rgba(62, 92, 110, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  color: #8b1a1a;
  border: 1px solid rgba(201, 169, 110, 0.4);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: #2c2c2c;
  margin-bottom: 10px;
  letter-spacing: 2px;
}

.feature-card p {
  font-size: 14px;
  color: #3e5c6e;
  line-height: 1.9;
}

.screenshots {
  background: #f5efe0;
}

.shots-wrap {
  position: relative;
  padding: 20px 0 40px;
}

.shots-track {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 24px;
  flex-wrap: wrap;
}

.shot {
  position: relative;
  width: 220px;
  border-radius: 28px;
  padding: 10px;
  background: linear-gradient(180deg, #fbf7ec, #f0e8d0);
  border: 1px solid rgba(201, 169, 110, 0.4);
  box-shadow: 0 12px 36px rgba(44, 44, 44, 0.12);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.shot:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 48px rgba(44, 44, 44, 0.18);
}

.shot::before,
.shot::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid #c9a96e;
  opacity: 0.7;
}

.shot::before {
  top: 4px;
  left: 4px;
  border-right: none;
  border-bottom: none;
  border-top-left-radius: 8px;
}

.shot::after {
  bottom: 4px;
  right: 4px;
  border-left: none;
  border-top: none;
  border-bottom-right-radius: 8px;
}

.shot img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  border-radius: 20px;
  border: 1px solid rgba(62, 92, 110, 0.15);
}

.download {
  position: relative;
  background:
    radial-gradient(ellipse at 10% 20%, rgba(139, 26, 26, 0.08), transparent 45%),
    radial-gradient(ellipse at 90% 80%, rgba(62, 92, 110, 0.08), transparent 45%),
    linear-gradient(180deg, #efe8d6 0%, #f5efe0 100%);
  overflow: hidden;
}

.download::before,
.download::after {
  content: "";
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font-size: 56px;
  font-weight: 900;
  color: rgba(139, 26, 26, 0.06);
  letter-spacing: 16px;
  pointer-events: none;
}

.download::before {
  left: 4%;
  content: "藏";
}

.download::after {
  right: 4%;
  content: "書";
}

.dl-box {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
  padding: 60px 40px;
  background: rgba(251, 247, 236, 0.85);
  border: 1px solid rgba(201, 169, 110, 0.4);
  border-radius: 24px;
  box-shadow: 0 16px 48px rgba(44, 44, 44, 0.1);
  backdrop-filter: blur(6px);
  text-align: center;
}

.dl-box h3 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 4px;
  color: #2c2c2c;
  margin-bottom: 14px;
}

.dl-box .dl-tip {
  color: #3e5c6e;
  letter-spacing: 2px;
  margin-bottom: 42px;
  font-size: 15px;
}

.dl-big-btns {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.dl-big {
  min-width: 260px;
  padding: 22px 34px;
  border-radius: 16px;
  color: #fff;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  transition: transform 0.2s ease, box-shadow 0.25s ease;
  position: relative;
}

.dl-big .top {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 3px;
}

.dl-big .top .icon {
  font-size: 26px;
}

.dl-big .meta {
  font-size: 12px;
  letter-spacing: 2px;
  opacity: 0.85;
}

.dl-big-android {
  background: linear-gradient(135deg, #a81818 0%, #8b1a1a 50%, #6b1212 100%);
  box-shadow: 0 10px 28px rgba(139, 26, 26, 0.3);
}

.dl-big-apple {
  background: linear-gradient(135deg, #3c3c3c 0%, #2c2c2c 50%, #1a1a1a 100%);
  box-shadow: 0 10px 28px rgba(44, 44, 44, 0.28);
}

.dl-big:hover {
  transform: translateY(-4px);
}

.disclaimer {
  max-width: 1200px;
  margin: 36px auto 0;
  padding: 0 24px;
  text-align: center;
  font-size: 12px;
  color: #3e5c6e;
  opacity: 0.75;
  letter-spacing: 1px;
}

.site-footer {
  background: #2c2c2c;
  color: #d9d4c7;
  padding: 40px 0 30px;
}

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

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(201, 169, 110, 0.2);
  flex-wrap: wrap;
  gap: 20px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #f5efe0;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 3px;
}

.footer-logo img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}

.footer-copy {
  text-align: center;
  padding-top: 22px;
  font-size: 13px;
  color: #a59c8a;
  letter-spacing: 1.5px;
}

@media (max-width: 960px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-title {
    font-size: 34px;
    letter-spacing: 4px;
  }

  .hero-subtitle {
    font-size: 17px;
    letter-spacing: 5px;
  }

  .shots-track {
    gap: 18px;
  }

  .shot {
    width: 45%;
    max-width: 240px;
  }
}

@media (max-width: 720px) {
  .header-inner {
    padding: 14px 18px;
  }

  .logo-wrap {
    font-size: 18px;
    letter-spacing: 1px;
  }

  .logo-wrap img {
    width: 40px;
    height: 40px;
    border-radius: 10px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(245, 239, 224, 0.98);
    border-bottom: 1px solid rgba(201, 169, 110, 0.3);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .main-nav.open {
    max-height: 400px;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 8px 0;
  }

  .main-nav li {
    width: 100%;
  }

  .main-nav a {
    display: block;
    padding: 14px 24px;
    font-size: 16px;
    border-bottom: 1px solid rgba(201, 169, 110, 0.12);
  }

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

  .hero {
    padding: 56px 0 72px;
  }

  .hero-logo {
    width: 88px;
    height: 88px;
    border-radius: 22px;
    margin-bottom: 22px;
  }

  .hero-title {
    font-size: 28px;
    letter-spacing: 3px;
  }

  .hero-subtitle {
    font-size: 15px;
    letter-spacing: 4px;
    margin-bottom: 22px;
  }

  .hero-desc {
    margin-bottom: 36px;
    font-size: 14px;
    line-height: 1.9;
  }

  .hero-desc span {
    margin: 4px 6px;
    padding: 3px 12px;
    font-size: 13px;
  }

  .hero-btns {
    gap: 16px;
  }

  .dl-btn {
    min-width: 100%;
    padding: 16px 24px;
    font-size: 15px;
  }

  .section {
    padding: 60px 0;
  }

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

  .section-title h2 {
    font-size: 22px;
    letter-spacing: 3px;
    padding: 0 30px;
  }

  .section-title p {
    font-size: 12px;
    letter-spacing: 2px;
  }

  .container {
    padding: 0 18px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .feature-card {
    padding: 30px 22px;
  }

  .shots-wrap {
    padding: 10px 0 20px;
  }

  .shots-track {
    gap: 14px;
  }

  .shot {
    width: 46%;
  }

  .shot img {
    height: 280px;
  }

  .download::before,
  .download::after {
    font-size: 36px;
    letter-spacing: 10px;
    opacity: 0.04;
  }

  .dl-box {
    padding: 36px 22px;
    margin: 0 18px;
    border-radius: 18px;
  }

  .dl-box h3 {
    font-size: 22px;
    letter-spacing: 2px;
  }

  .dl-box .dl-tip {
    font-size: 13px;
    margin-bottom: 28px;
  }

  .dl-big-btns {
    gap: 16px;
  }

  .dl-big {
    min-width: 100%;
    padding: 18px 24px;
  }

  .disclaimer {
    margin-top: 26px;
    font-size: 11px;
    line-height: 1.8;
  }

  .footer-top {
    justify-content: center;
    text-align: center;
  }

  .footer-copy {
    font-size: 12px;
    letter-spacing: 1px;
    line-height: 1.8;
  }
}

@media (max-width: 420px) {
  .hero-title {
    font-size: 24px;
    letter-spacing: 2px;
  }

  .shot img {
    height: 240px;
  }

  .feature-icon {
    width: 56px;
    height: 56px;
    font-size: 26px;
  }
}