:root {
  --bg: #f4f8fb;
  --surface: #ffffff;
  --text: #11243d;
  --muted: #4b6077;
  --brand: #0c7c9d;
  --brand-2: #19a974;
  --line: #d8e4ef;
  --radius: 16px;
  --shadow: 0 12px 28px rgba(17, 36, 61, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #eef6fb 0%, #f8fbfd 42%, #ffffff 100%);
  line-height: 1.65;
  overflow-x: hidden;
}

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

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
}

.nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}

.nav-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--muted);
  font-weight: 600;
  padding: 0.35rem 0.5rem;
  border-radius: 8px;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: #edf5fb;
}

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

.lang-switch a {
  padding: 0.35rem 0.7rem;
  font-size: 0.9rem;
  color: var(--muted);
  background: #fff;
}

.lang-switch a.active {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}

.hero {
  padding: 4.8rem 0 2.5rem;
}

.hero-card {
  padding: 2rem;
  border-radius: 24px;
  background:
    radial-gradient(circle at 12% 16%, rgba(25, 169, 116, 0.18), transparent 28%),
    radial-gradient(circle at 88% 14%, rgba(12, 124, 157, 0.2), transparent 30%), var(--surface);
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}

.hero-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  gap: 1.4rem;
  align-items: center;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  border: 1px solid #b7d4e6;
  background: rgba(255, 255, 255, 0.75);
  font-size: 0.82rem;
  font-weight: 700;
  color: #1f4b67;
}

.hero h1 {
  margin: 0.75rem 0 0;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.2;
}

.hero p {
  margin: 1rem 0 0;
  color: var(--muted);
  max-width: 72ch;
}

.hero-cta {
  margin-top: 1.25rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.hero-chips {
  margin-top: 1rem;
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.chip {
  display: inline-flex;
  align-items: center;
  border: 1px solid #bfd8e8;
  border-radius: 999px;
  padding: 0.26rem 0.62rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: #1d4863;
  background: rgba(255, 255, 255, 0.85);
}

.btn {
  border: none;
  border-radius: 999px;
  padding: 0.72rem 1.1rem;
  font-weight: 700;
  cursor: pointer;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.btn.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}

.btn.ghost {
  color: var(--text);
  background: #ecf4fb;
}

.home-stats {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  color: #2f516a;
  font-size: 0.9rem;
}

.home-stats strong {
  color: #12334f;
}

.hero-visual {
  position: relative;
  min-height: 370px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.mock-phone {
  width: min(280px, 72%);
  border-radius: 30px;
  border: 1px solid #bfd8e8;
  box-shadow: 0 26px 36px rgba(19, 55, 82, 0.18);
  background: #fff;
}

.signal-card {
  position: absolute;
  width: min(220px, 74%);
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid #c7dbe9;
  border-radius: 12px;
  padding: 0.6rem 0.75rem;
  font-size: 0.78rem;
  color: #234760;
  box-shadow: 0 10px 20px rgba(17, 36, 61, 0.12);
}

.signal-card.top {
  top: 14px;
  left: 6px;
}

.signal-card.bottom {
  right: 8px;
  bottom: 12px;
}

.section {
  padding: 2.4rem 0;
}

.section.alt {
  background: #f4f9fc;
  border-top: 1px solid #dfebf4;
  border-bottom: 1px solid #dfebf4;
}

.section h2 {
  margin: 0 0 0.7rem;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
}

.section-lead {
  margin: 0;
  color: var(--muted);
}

.card-grid {
  margin-top: 1.2rem;
  display: grid;
  gap: 0.95rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 1rem;
}

.card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
}

.feature-card {
  position: relative;
  padding-top: 1.15rem;
}

.feature-icon {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  margin-bottom: 0.65rem;
}

.card p,
.text-block p {
  margin: 0;
  color: var(--muted);
}

.text-block {
  margin-top: 1rem;
  display: grid;
  gap: 0.8rem;
}

.text-block p + p {
  margin-top: 0.25rem;
}

.note {
  margin-top: 0.7rem;
  background: #eef7ff;
  border-left: 4px solid var(--brand);
  border-radius: 0 10px 10px 0;
  padding: 0.75rem 0.95rem;
  color: #1b4f7d;
}

.split-grid {
  margin-top: 1rem;
  display: grid;
  gap: 0.95rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.community-layout {
  margin-top: 1rem;
  display: grid;
  gap: 0.95rem;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
}

.media-card {
  display: flex;
  justify-content: center;
  align-items: center;
}

.benefit-list {
  margin: 0.75rem 0 0;
  padding-left: 1rem;
  color: #3b5d75;
}

.benefit-list li + li {
  margin-top: 0.35rem;
}

.shot-grid {
  margin-top: 1rem;
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.faq-root {
  margin-top: 1rem;
  display: grid;
  gap: 1.2rem;
}

.faq-category {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 1rem;
}

.faq-category h3 {
  margin: 0 0 0.8rem;
  font-size: 1.1rem;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fbfdff;
}

.faq-item + .faq-item {
  margin-top: 0.5rem;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  padding: 0.8rem 1rem;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-answer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 0.7rem 1rem 0.95rem;
}

.cta-panel {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.download-panel h2 {
  margin-bottom: 0.5rem;
}

.download-panel {
  text-align: center;
}

.download-panel .section-lead {
  margin-left: auto;
  margin-right: auto;
  max-width: 62ch;
}

.store-badges {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  justify-content: center;
  align-items: center;
}

.store-badges a {
  display: inline-flex;
}

.store-badges img {
  height: 54px;
  width: auto;
}

.footer {
  margin-top: 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 1.5rem 0 2.2rem;
  font-size: 0.92rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.footer-links a {
  color: #355670;
  font-weight: 600;
}

.company-info {
  display: grid;
  gap: 0.2rem;
  font-size: 0.88rem;
}

.company-info p {
  margin: 0;
}

.company-info a {
  color: #355670;
  font-weight: 600;
}

.copyright-note {
  color: #6e8090;
}

.page-hero {
  padding: 3.5rem 0 1.4rem;
}

.page-hero p {
  margin: 0.85rem 0 0;
  color: var(--muted);
  max-width: 75ch;
}

.tag-links {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.tag-links a {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 0.35rem 0.65rem;
  color: #33556f;
  font-weight: 600;
  font-size: 0.88rem;
}

.country-filter {
  margin-top: 0.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.country-filter .filter-btn {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  color: var(--muted);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.country-filter .filter-btn:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.country-filter .filter-btn.active {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}

.phone-shot {
  width: 100%;
  max-width: 250px;
  display: block;
  margin: 0 auto;
  border-radius: 14px;
  border: 1px solid var(--line);
}

.stat-pills {
  margin-top: 1rem;
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.download-panel .stat-pills {
  justify-content: center;
}

.stat-pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
  color: #30526c;
  font-weight: 600;
  font-size: 0.85rem;
}

body.theme-outdoor {
  --bg: #f7f3eb;
  --surface: #fffdfa;
  --text: #1f2c1f;
  --muted: #5a6552;
  --brand: #1f7a5a;
  --brand-2: #b0722d;
  --line: #e6dcc8;
  --shadow: 0 12px 28px rgba(51, 45, 28, 0.1);
  background:
    radial-gradient(circle at 12% 4%, rgba(31, 122, 90, 0.12), transparent 38%),
    radial-gradient(circle at 92% 10%, rgba(176, 114, 45, 0.16), transparent 34%),
    linear-gradient(180deg, #f7f4ed 0%, #f8f5ef 42%, #fbf9f4 100%);
}

body.theme-outdoor .site-header {
  background: rgba(255, 252, 246, 0.92);
  border-bottom-color: #e9ddc8;
}

body.theme-outdoor .hero-card {
  background:
    radial-gradient(circle at 8% 12%, rgba(31, 122, 90, 0.2), transparent 33%),
    radial-gradient(circle at 90% 10%, rgba(176, 114, 45, 0.24), transparent 33%), var(--surface);
}

body.theme-outdoor .chip {
  border-color: #d7c9aa;
  color: #5a4a2f;
  background: rgba(255, 250, 238, 0.9);
}

body.theme-outdoor .signal-card {
  border-color: #e2d2b6;
  color: #4f432f;
  background: rgba(255, 250, 239, 0.95);
}

body.theme-outdoor .feature-icon {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}

body.theme-outdoor .card {
  border-color: #eadfcf;
}

body.theme-outdoor .note {
  background: #fff6e8;
  border-left-color: #ad6f2b;
  color: #6a4a22;
}

body.theme-outdoor .btn.ghost {
  background: #f6efe3;
}

@media (max-width: 900px) {
  .container {
    width: min(1120px, calc(100% - 1.5rem));
  }

  .nav {
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: center;
    row-gap: 0.55rem;
    padding: 0.55rem 0 0.65rem;
  }

  .brand {
    width: 100%;
    justify-content: center;
  }

  .lang-switch {
    margin: 0 auto;
  }

  .nav-links {
    width: 100%;
    justify-content: center;
    gap: 0.45rem;
  }

  .nav-links a {
    font-size: 0.9rem;
    padding: 0.32rem 0.46rem;
  }

  .hero {
    padding: 3.2rem 0 2rem;
  }

  .hero-card {
    padding: 1.5rem;
  }

  .hero-shell {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    text-align: center;
  }

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

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

  .hero-cta,
  .hero-chips,
  .home-stats {
    justify-content: center;
  }

  .hero-visual {
    min-height: 300px;
  }

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

  .community-layout {
    grid-template-columns: 1fr;
  }

  .page-hero {
    padding: 2.8rem 0 1.2rem;
  }

  .page-hero h1,
  .page-hero p {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
  }

  .tag-links,
  .footer-links {
    justify-content: center;
  }

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

  .company-info {
    text-align: center;
  }
}

@media (max-width: 600px) {
  .container {
    width: min(1120px, calc(100% - 1.25rem));
  }

  .nav {
    position: relative;
    justify-content: space-between;
    row-gap: 0.4rem;
    padding: 0.82rem 0 0.55rem;
  }

  .brand {
    width: auto;
    justify-content: flex-start;
    padding-right: 6.35rem;
  }

  .lang-switch {
    position: absolute;
    top: 0.05rem;
    right: 0;
    margin: 0;
    z-index: 2;
    box-shadow: 0 4px 12px rgba(17, 36, 61, 0.12);
  }

  .nav-links {
    width: 100%;
    flex-wrap: nowrap;
    justify-content: flex-start;
    gap: 0.3rem;
    overflow-x: auto;
    padding: 0.12rem 0.08rem 0.25rem;
    margin-top: 0.1rem;
    scrollbar-width: thin;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x proximity;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .nav-links li {
    flex: 0 0 auto;
    scroll-snap-align: start;
  }

  .nav-links a {
    white-space: nowrap;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.88);
    padding: 0.3rem 0.5rem;
    font-size: 0.84rem;
  }

  .hero {
    padding: 2.45rem 0 1.45rem;
  }

  .hero-card {
    padding: 1.25rem;
    border-radius: 18px;
  }

  .hero h1 {
    font-size: clamp(1.52rem, 7.5vw, 2.05rem);
    letter-spacing: -0.01em;
  }

  .hero p {
    font-size: 0.93rem;
  }

  .hero-cta {
    gap: 0.55rem;
  }

  .hero-visual {
    min-height: auto;
    display: grid;
    justify-items: center;
    gap: 0.55rem;
    padding-top: 0.2rem;
  }

  .mock-phone {
    width: min(250px, 82vw);
  }

  .signal-card {
    position: static;
    width: min(320px, 100%);
    text-align: left;
  }

  .signal-card.top,
  .signal-card.bottom {
    top: auto;
    left: auto;
    right: auto;
    bottom: auto;
  }

  .btn {
    width: 100%;
    justify-content: center;
    min-height: 46px;
    font-size: 0.92rem;
  }

  .section {
    padding: 1.5rem 0;
  }

  .section h2 {
    font-size: clamp(1.35rem, 6vw, 1.7rem);
  }

  .card-grid,
  .split-grid,
  .community-layout,
  .shot-grid {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 0.9rem;
  }

  .download-panel h2 {
    line-height: 1.28;
  }

  .download-panel .section-lead {
    font-size: 0.92rem;
  }

  .store-badges {
    gap: 0.52rem;
  }

  .store-badges a {
    width: min(196px, calc(50% - 0.3rem));
    justify-content: center;
  }

  .store-badges img {
    height: 48px;
    max-width: 100%;
  }

  .page-hero {
    padding: 2.2rem 0 1rem;
  }

  .page-hero h1 {
    font-size: clamp(1.35rem, 6.6vw, 1.8rem);
  }

  .tag-links a {
    font-size: 0.82rem;
  }

  .country-filter {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 0.25rem;
    scrollbar-width: none;
  }

  .country-filter::-webkit-scrollbar {
    display: none;
  }

  .country-filter .filter-btn {
    font-size: 0.82rem;
    white-space: nowrap;
  }

  .footer {
    padding: 1.2rem 0 1.7rem;
  }

  .footer-links a {
    font-size: 0.86rem;
  }

  .company-info {
    font-size: 0.84rem;
  }
}

@media (max-width: 420px) {
  .container {
    width: min(1120px, calc(100% - 1rem));
  }

  .brand span {
    font-size: 0.95rem;
  }

  .nav-links a {
    font-size: 0.82rem;
    padding: 0.28rem 0.4rem;
  }

  .lang-switch a {
    padding: 0.3rem 0.55rem;
    font-size: 0.82rem;
  }

  .brand {
    padding-right: 5.8rem;
  }

  .hero-card {
    padding: 1rem;
  }

  .hero-kicker {
    font-size: 0.75rem;
  }

  .store-badges img {
    height: 44px;
  }

  .store-badges a {
    width: min(184px, calc(50% - 0.26rem));
  }

  .company-info {
    font-size: 0.82rem;
  }

  .footer-links {
    gap: 0.5rem;
  }
}

@media (max-width: 390px) {
  .nav {
    padding-top: 0.78rem;
  }

  .brand {
    padding-right: 5.5rem;
  }

  .brand img {
    width: 32px;
    height: 32px;
  }

  .lang-switch a {
    padding: 0.28rem 0.5rem;
    font-size: 0.8rem;
  }

  .hero h1 {
    font-size: clamp(1.45rem, 7.4vw, 1.85rem);
  }

  .download-panel .section-lead {
    font-size: 0.9rem;
  }

  .store-badges {
    gap: 0.45rem;
  }

  .store-badges a {
    width: min(220px, 100%);
  }

  .store-badges img {
    height: 46px;
  }

  .stat-pill {
    font-size: 0.8rem;
    padding: 0.32rem 0.58rem;
  }
}