@charset "UTF-8";

:root {
  --color-primary: #ff6b00;
  --color-secondary: #00cfe6;
  --color-dark: #121212;
  --color-dark-soft: #1e1e1e;
  --color-panel: rgba(30, 30, 30, 0.72);
  --color-border: rgba(51, 51, 51, 0.72);
  --color-muted: #aaaaaa;
  --color-white-soft: rgba(255, 255, 255, 0.78);
  --shadow-panel: 0 24px 60px rgba(0, 0, 0, 0.34);
  --shadow-primary: 0 12px 32px rgba(255, 107, 0, 0.2);
  --container-width: 1180px;
  --header-height: 76px;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--color-dark);
  color: #fff;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", "Helvetica Neue", Arial,
    sans-serif;
  font-feature-settings: "kern";
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.nav-open {
  overflow: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

.container {
  width: min(100% - 32px, var(--container-width));
  margin-inline: auto;
}

.accent-primary {
  color: var(--color-primary);
}

.text-warning {
  color: #facc15;
}

.text-secondary {
  color: var(--color-secondary);
}

.text-success {
  color: #4ade80;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  transition: background-color 0.25s ease, box-shadow 0.25s ease, backdrop-filter 0.25s ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  background: rgba(18, 18, 18, 0.95);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(12px);
}

.header-inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-block: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.brand-logo {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  object-fit: cover;
}

.brand-logo-small {
  width: 34px;
  height: 34px;
  border-radius: 7px;
}

.brand-name {
  margin: 0;
  color: #fff;
  font-size: clamp(1.25rem, 1.8vw, 1.55rem);
  font-weight: 800;
  line-height: 1.1;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  color: var(--color-white-soft);
}

.site-nav a,
.footer-link {
  transition: color 0.2s ease;
}

.site-nav a:hover,
.footer-link:hover {
  color: var(--color-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #fff;
  cursor: pointer;
}

.mobile-nav {
  display: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  border-radius: 8px;
  border: 1px solid transparent;
  padding: 10px 18px;
  font-weight: 700;
  line-height: 1.2;
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--color-primary);
  box-shadow: var(--shadow-primary);
  color: #fff;
}

.btn-primary:hover {
  background: #f16400;
}

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.3);
  background: transparent;
  color: #fff;
}

.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.6);
}

.hero {
  position: relative;
  min-height: 670px;
  overflow: hidden;
  padding: 150px 0 110px;
}

.hero-media,
.download-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(18, 18, 18, 0.08) 0%, var(--color-dark) 100%);
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  -webkit-mask-image: linear-gradient(to bottom, #000 70%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 70%, transparent 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
  margin-inline: auto;
  text-align: center;
}

.hero-title {
  margin: 0 0 24px;
  font-size: clamp(2.15rem, 5vw, 3.7rem);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1.15;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-title span {
  display: block;
}

.hero-copy {
  max-width: 690px;
  margin: 0 auto 38px;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(1rem, 2vw, 1.25rem);
}

.hero-actions,
.hero-badges,
.download-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.hero-badges {
  margin-top: 54px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 42px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: rgba(30, 30, 30, 0.7);
  padding: 8px 20px;
  color: rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(8px);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.badge:hover {
  background: rgba(30, 30, 30, 0.86);
  border-color: rgba(255, 255, 255, 0.25);
}

.section {
  padding: 88px 0;
}

.section-muted {
  background: rgba(30, 30, 30, 0.3);
}

.section-header {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-title {
  margin: 0;
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  font-weight: 800;
  line-height: 1.2;
}

.section-rule {
  width: 96px;
  height: 4px;
  margin: 18px auto 0;
  border-radius: 999px;
  background: var(--color-primary);
}

.section-rule-secondary {
  background: var(--color-secondary);
}

.section-lead {
  margin: 18px auto 0;
  color: rgba(255, 255, 255, 0.62);
}

.content-narrow {
  max-width: 900px;
  margin-inline: auto;
}

.panel {
  border: 1px solid rgba(51, 51, 51, 0.55);
  border-radius: 18px;
  background: rgba(30, 30, 30, 0.5);
  box-shadow: var(--shadow-panel);
}

.intro-panel {
  padding: clamp(26px, 5vw, 42px);
}

.intro-text {
  margin: 0;
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.feature-card,
.screenshot-card,
.update-card {
  border: 1px solid rgba(51, 51, 51, 0.65);
  background: var(--color-dark);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.feature-card {
  min-height: 240px;
  border-radius: 14px;
  padding: 24px;
}

.hover-lift:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  border-radius: 10px;
  font-size: 1.2rem;
}

.feature-icon-primary {
  background: rgba(255, 107, 0, 0.18);
  color: var(--color-primary);
}

.feature-icon-secondary {
  background: rgba(0, 207, 230, 0.18);
  color: var(--color-secondary);
}

.feature-icon-success {
  background: rgba(34, 197, 94, 0.18);
  color: #22c55e;
}

.feature-card h3,
.screenshot-info h3 {
  margin: 0 0 8px;
  font-size: 1.2rem;
}

.feature-card p,
.screenshot-info p,
.download-copy,
.policy-page p,
.policy-page li {
  color: rgba(255, 255, 255, 0.7);
}

.feature-card p,
.screenshot-info p {
  margin: 0;
}

.updates-list {
  display: grid;
  gap: 28px;
}

.update-card {
  overflow: hidden;
  border-radius: 18px;
  background: var(--color-dark-soft);
}

.update-card:hover {
  border-color: rgba(0, 207, 230, 0.32);
}

.update-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 1px solid rgba(51, 51, 51, 0.62);
  background: rgba(0, 207, 230, 0.1);
  padding: 18px 24px;
}

.update-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.pulse-dot {
  width: 12px;
  height: 12px;
  flex: 0 0 auto;
  border-radius: 999px;
  background: var(--color-secondary);
  animation: pulseSlow 3s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.update-title h3 {
  margin: 0;
  font-size: 1.25rem;
}

.update-date {
  color: rgba(255, 255, 255, 0.52);
  font-size: 0.9rem;
  white-space: nowrap;
}

.check-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 24px;
  list-style: none;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.check-list i {
  margin-top: 5px;
  color: #4ade80;
}

.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.screenshot-card {
  overflow: hidden;
  border-radius: 14px;
  background: var(--color-dark-soft);
  box-shadow: var(--shadow-panel);
}

.screenshot-media {
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
}

.screenshot-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s ease;
}

.screenshot-card:hover img {
  transform: scale(1.1);
}

.screenshot-info {
  position: absolute;
  inset: auto 0 0;
  padding: 34px 18px 18px;
  background: linear-gradient(0deg, rgba(18, 18, 18, 0.88) 0%, rgba(18, 18, 18, 0) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.screenshot-card:hover .screenshot-info {
  opacity: 1;
}

.download-section {
  position: relative;
  overflow: hidden;
  padding: 88px 0;
  background: linear-gradient(180deg, rgba(30, 30, 30, 0.5), var(--color-dark));
}

.download-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(18, 18, 18, 0.9);
}

.download-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
}

.download-content {
  position: relative;
  z-index: 1;
  max-width: 860px;
  margin-inline: auto;
  text-align: center;
}

.download-title {
  margin: 0 0 18px;
  font-size: clamp(1.9rem, 3vw, 2.55rem);
  line-height: 1.25;
}

.download-copy {
  max-width: 680px;
  margin: 0 auto 46px;
}

.download-card {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 224px;
  border: 1px solid rgba(255, 107, 0, 0.32);
  border-radius: 14px;
  background: var(--color-dark-soft);
  padding: 16px 28px;
  text-align: left;
}

.download-card-ios {
  border-color: rgba(255, 255, 255, 0.2);
}

.download-icon {
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 999px;
  background: var(--color-primary);
  font-size: 1.45rem;
}

.download-card-ios .download-icon {
  background: #374151;
}

.download-meta {
  display: block;
  color: rgba(255, 255, 255, 0.52);
  font-size: 0.78rem;
}

.download-platform {
  display: block;
  font-weight: 800;
}

.download-card-ios .download-platform {
  color: #9ca3af;
}

.site-footer {
  border-top: 1px solid rgba(51, 51, 51, 0.45);
  background: var(--color-dark-soft);
  padding: 40px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-social {
  display: flex;
  gap: 22px;
}

.footer-social a {
  color: rgba(255, 255, 255, 0.62);
  font-size: 1.3rem;
  transition: color 0.2s ease;
}

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

.footer-meta {
  color: rgba(255, 255, 255, 0.54);
  font-size: 0.92rem;
  text-align: right;
}

.footer-meta p {
  margin: 4px 0;
}

.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 50;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 999px;
  background: var(--color-primary);
  color: #fff;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  box-shadow: var(--shadow-primary);
  transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease, background-color 0.2s ease;
}

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

.back-to-top:hover {
  background: #f16400;
  transform: translateY(-2px);
}

.reveal {
  opacity: 1;
  transform: translateY(0);
}

.reveal.is-visible {
  animation: slideUp 0.65s ease forwards;
}

.hero-title,
.hero-copy,
.hero-actions,
.hero-badges {
  animation: fadeIn 0.5s ease both;
}

.hero-copy {
  animation-delay: 0.08s;
}

.hero-actions {
  animation-delay: 0.16s;
}

.hero-badges {
  animation-delay: 0.24s;
}

.policy-page {
  min-height: 100vh;
}

.policy-main {
  padding: 124px 0 72px;
}

.policy-article {
  max-width: 900px;
  margin-inline: auto;
  border: 1px solid rgba(51, 51, 51, 0.58);
  border-radius: 18px;
  background: rgba(30, 30, 30, 0.56);
  box-shadow: var(--shadow-panel);
  padding: clamp(24px, 5vw, 44px);
}

.policy-article h1 {
  margin: 0;
  color: #fff;
  font-size: clamp(2rem, 4vw, 3rem);
  text-align: center;
}

.policy-date {
  display: grid;
  gap: 4px;
  margin: 18px 0 28px;
  color: rgba(255, 255, 255, 0.58);
  text-align: center;
}

.policy-card {
  border: 1px solid rgba(51, 51, 51, 0.58);
  border-radius: 14px;
  background: rgba(18, 18, 18, 0.6);
  padding: 20px;
}

.policy-card + .policy-card,
.policy-article section + section {
  margin-top: 28px;
}

.policy-article h2 {
  margin: 0 0 12px;
  color: #fff;
  font-size: 1.35rem;
}

.policy-article ul {
  margin: 10px 0 0;
  padding-left: 1.35rem;
}

.policy-article li + li {
  margin-top: 8px;
}

.policy-important {
  color: #ff8b47;
  font-weight: 800;
}

.policy-contact {
  border-color: rgba(255, 107, 0, 0.32);
}

.policy-contact strong {
  color: #fff;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulseSlow {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.45;
  }
}

@media (max-width: 900px) {
  .site-nav {
    display: none;
  }

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

  .mobile-nav {
    position: absolute;
    inset: 100% 0 auto;
    display: grid;
    gap: 0;
    padding: 0 16px 16px;
    background: rgba(30, 30, 30, 0.96);
    backdrop-filter: blur(12px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
  }

  .mobile-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .mobile-nav a {
    border-bottom: 1px solid rgba(51, 51, 51, 0.55);
    padding: 14px 0;
    color: var(--color-white-soft);
  }

  .hero {
    min-height: 620px;
    padding-top: 128px;
  }

  .feature-grid,
  .screenshot-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .footer-meta {
    text-align: center;
  }
}

@media (max-width: 640px) {
  :root {
    --header-height: 68px;
  }

  .container {
    width: min(100% - 24px, var(--container-width));
  }

  .brand-logo {
    width: 42px;
    height: 42px;
  }

  .header-actions .btn span {
    display: none;
  }

  .header-actions .btn {
    width: 42px;
    padding-inline: 0;
  }

  .hero {
    min-height: 590px;
    padding: 116px 0 82px;
  }

  .hero-actions .btn,
  .download-card {
    width: 100%;
  }

  .hero-badges {
    margin-top: 42px;
  }

  .section,
  .download-section {
    padding: 66px 0;
  }

  .section-header {
    margin-bottom: 38px;
  }

  .feature-grid,
  .screenshot-grid {
    grid-template-columns: 1fr;
  }

  .update-head {
    align-items: flex-start;
    flex-direction: column;
    padding: 18px;
  }

  .check-list {
    padding: 20px 18px;
  }

  .policy-main {
    padding-top: 102px;
  }
}