:root {
  --accent: #fa4b66;
  --accent-deep: #ff7088;
  --accent2: #00aff8;
  --bg0: #ffffff;
  --bg1: #f7f8fa;
  --ink: #1a1f36;
  --muted: #747e8b;
  --line: #e8ecf1;
  --radius: 12px;
  --max: 1080px;
  --font: "Noto Sans SC", "Segoe UI", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg0);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

.wrap {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* Top badge */
.top-badge {
  background: linear-gradient(90deg, #fff5f7, #f0fbff);
  border-bottom: 1px solid var(--line);
  font-size: 0.875rem;
  color: var(--muted);
}

.top-badge .wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0;
}

.top-badge img {
  width: 18px;
  height: 18px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.brand-logo {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.brand span {
  color: var(--accent);
}

.feature-icon {
  width: 48px !important;
  height: 48px !important;
  object-fit: contain;
  flex-shrink: 0;
}

.top-badge img {
  width: 20px;
  height: 20px;
  object-fit: contain;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav a {
  font-size: 0.95rem;
  color: var(--muted);
  font-weight: 500;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--ink);
}

.lang-switch {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
  font-size: 0.8rem;
}

.lang-switch a {
  padding: 0.35rem 0.7rem;
  color: var(--muted);
}

.lang-switch a[aria-current="true"] {
  background: var(--ink);
  color: #fff;
}

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  width: 40px;
  height: 40px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
}

@media (max-width: 760px) {
  .nav-toggle {
    display: block;
  }
  .nav {
    display: none;
    position: absolute;
    inset: 64px 0 auto;
    background: #fff;
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 1.25rem 1.25rem;
    gap: 0.85rem;
  }
  .nav.is-open {
    display: flex;
  }
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 85% 20%, rgba(250, 75, 102, 0.12), transparent 55%),
    radial-gradient(ellipse 60% 50% at 10% 80%, rgba(0, 175, 248, 0.1), transparent 50%),
    linear-gradient(180deg, #fff 0%, #fafbfc 100%);
  padding: 3.5rem 0 4rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2rem;
  align-items: center;
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-visual {
    order: -1;
    max-width: 420px;
    margin-inline: auto;
  }
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-weight: 800;
}

.hero-sub {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.hero-sub a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.hero-sub a:hover {
  color: var(--accent-deep);
}

.hero-sub img {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin: 0 0 1.75rem;
}

.stats li strong {
  display: block;
  font-size: 1.75rem;
  color: var(--accent);
  line-height: 1.1;
}

.stats li span {
  font-size: 0.9rem;
  color: var(--muted);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.35rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

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

.btn-primary {
  background: linear-gradient(180deg, var(--accent-deep), var(--accent));
  color: #fff;
  box-shadow: 0 10px 24px rgba(250, 75, 102, 0.28);
}

.btn-ghost {
  background: #fff;
  border-color: var(--line);
  color: var(--ink);
}

.hero-visual {
  position: relative;
}

.hero-visual img.hero-shot {
  width: 100%;
  filter: drop-shadow(0 24px 40px rgba(26, 31, 54, 0.12));
}

.pulse {
  position: absolute;
  left: 12%;
  bottom: 18%;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(180deg, var(--accent-deep), var(--accent));
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  font-weight: 800;
  animation: pulse 2.4s ease-out infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(250, 75, 102, 0.45);
  }
  70% {
    box-shadow: 0 0 0 22px rgba(250, 75, 102, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(250, 75, 102, 0);
  }
}

/* Features */
.features {
  padding: 4rem 0;
  background: var(--bg1);
}

.features h2.section-title {
  text-align: center;
  font-size: 1.75rem;
  margin: 0 0 2rem;
}

.feature-list {
  display: grid;
  gap: 1.25rem;
}

.feature-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.25rem;
  align-items: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
}

.feature-item:nth-child(even) {
  grid-template-columns: auto 1fr;
}

.feature-item:nth-child(even) .feature-copy {
  order: 2;
}

.feature-item h3 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
}

.feature-item p {
  margin: 0;
  color: var(--muted);
}

.feature-item img,
.feature-item .feature-icon {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

@media (max-width: 700px) {
  .feature-item,
  .feature-item:nth-child(even) {
    grid-template-columns: 1fr;
  }
  .feature-item:nth-child(even) .feature-copy {
    order: 0;
  }
}

/* Downloads */
.downloads {
  padding: 3.5rem 0;
}

.downloads h2 {
  margin: 0 0 1.25rem;
  font-size: 1.5rem;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}

@media (max-width: 700px) {
  .download-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.download-grid a {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  text-align: center;
  font-weight: 600;
  background: #fff;
}

.dl-teaser {
  color: var(--muted);
  margin: 0 0 1rem;
}

.dl-platform-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (max-width: 700px) {
  .dl-platform-grid {
    grid-template-columns: 1fr;
  }
}

.dl-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem 1.35rem;
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.dl-card-icon {
  width: 61px;
  height: 61px;
  object-fit: contain;
  color: #1a1a2e;
}

.dl-card h2 {
  margin: 0;
  font-size: 1.2rem;
}

.dl-card p {
  margin: 0 0 0.5rem;
  color: var(--muted);
  flex: 1;
}

.dl-card .btn {
  align-self: flex-start;
}

/* Page shell for inner pages */
.page-hero {
  padding: 2.5rem 0 1.5rem;
  background: linear-gradient(180deg, #fff5f7, #fff);
  border-bottom: 1px solid var(--line);
}

.page-hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 3vw, 2.25rem);
}

.page-hero p {
  margin: 0;
  color: var(--muted);
}

.content {
  padding: 2.5rem 0 4rem;
}

.card-grid {
  display: grid;
  gap: 1rem;
}

.card {
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
  background: #fff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.card-media {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 1rem;
  align-items: center;
  padding: 0.85rem 1rem 0.85rem 0.85rem;
}

.card-media-img {
  width: 140px;
  height: 96px;
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg1);
  flex-shrink: 0;
}

.card-media-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-media-body h2 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.card-media-body p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

@media (max-width: 640px) {
  .card-media {
    grid-template-columns: 1fr;
  }
  .card-media-img {
    width: 100%;
    height: 160px;
  }
}

.card:hover {
  border-color: rgba(250, 75, 102, 0.35);
  box-shadow: 0 8px 24px rgba(26, 31, 54, 0.06);
}

.card h2 {
  margin: 0 0 0.4rem;
  font-size: 1.1rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.article {
  max-width: 720px;
}

.article-cover {
  margin: 0 0 1.5rem;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg1);
}

.article-cover img {
  width: 100%;
  height: auto;
  max-height: 360px;
  object-fit: cover;
  display: block;
}

.article h1 {
  margin: 0 0 1.25rem;
  font-size: clamp(1.6rem, 3vw, 2rem);
  line-height: 1.3;
}

.article p,
.article li {
  color: #2c3348;
}

.article h2,
.article h3 {
  margin-top: 1.75rem;
}

.help-steps {
  display: grid;
  gap: 1rem;
}

.help-steps .step {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  background: #fff;
}

.help-steps .step h2,
.help-steps .step h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.help-steps .step p {
  margin: 0;
  color: var(--muted);
}

.ios-guide {
  max-width: 760px;
}

.ios-video {
  margin-bottom: 2rem;
}

.ios-video h2 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
}

.ios-video video {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #0b0f16;
  aspect-ratio: 16 / 9;
}

.ios-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.ios-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  background: #fff;
}

.ios-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(180deg, var(--accent-deep), var(--accent));
}

.ios-step h2 {
  margin: 0 0 0.45rem;
  font-size: 1.1rem;
}

.ios-step p {
  margin: 0 0 0.85rem;
  color: var(--muted);
}

.ios-link-hint {
  margin: 0.75rem 0 0 !important;
  font-size: 0.85rem;
}

.ios-link-hint code {
  display: inline-block;
  word-break: break-all;
  background: var(--bg1);
  padding: 0.35rem 0.5rem;
  border-radius: 6px;
  color: var(--ink);
}

.ios-note {
  margin: 1.5rem 0;
  padding: 0.9rem 1rem;
  border-left: 3px solid var(--accent);
  background: #fff5f7;
  color: var(--muted);
  font-size: 0.92rem;
}

/* Footer */
.site-footer {
  background: #121722;
  color: #c9d1de;
  padding: 3rem 0 2rem;
}

.site-footer h3 {
  color: #fff;
  font-size: 0.95rem;
  margin: 0 0 0.85rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2rem;
}

@media (max-width: 700px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.site-footer a {
  display: block;
  margin-bottom: 0.45rem;
  color: #a8b3c4;
  font-size: 0.92rem;
}

.site-footer a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  align-items: center;
}

.footer-copy {
  margin: 0;
  font-size: 0.85rem;
  color: #8893a6;
}

.social {
  display: flex;
  gap: 0.75rem;
}

.social img {
  width: 22px;
  height: 22px;
  opacity: 0.85;
}

.footer-note {
  font-size: 0.85rem;
  color: #8893a6;
}

/* Breadcrumbs */
.breadcrumbs {
  background: #fff;
  border-bottom: 1px solid var(--line);
  font-size: 0.88rem;
}

.crumb-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem 1.25rem;
  min-height: 44px;
  padding: 0.55rem 0;
}

.crumb-back {
  color: var(--accent);
  font-weight: 600;
  white-space: nowrap;
}

.crumb-back:hover {
  text-decoration: underline;
}

.crumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  list-style: none;
  margin: 0;
  padding: 0;
  color: var(--muted);
}

.crumb-list a {
  color: var(--muted);
}

.crumb-list a:hover {
  color: var(--ink);
}

.crumb-list li[aria-current="page"] span {
  color: var(--ink);
  font-weight: 600;
}

.crumb-sep {
  color: #c0c7d2;
  user-select: none;
}

/* 404 */
.err {
  min-height: 60vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 3rem 1rem;
}