:root {
  color-scheme: light;
  --ink: #142423;
  --muted: #60716f;
  --soft: #f5f8f7;
  --panel: #ffffff;
  --line: #dce7e4;
  --mint: #4bb19b;
  --mint-dark: #167765;
  --blue: #284f8f;
  --coral: #e66b54;
  --shadow: 0 24px 70px rgba(30, 62, 58, 0.13);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 78% 8%, rgba(75, 177, 155, 0.18), transparent 28rem),
    linear-gradient(180deg, #fbfdfc 0%, var(--soft) 46%, #ffffff 100%);
  color: var(--ink);
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "SF Pro Display",
    "PingFang SC",
    "Hiragino Sans GB",
    "Microsoft YaHei",
    sans-serif;
  line-height: 1.65;
  letter-spacing: 0;
}

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

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

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(75, 177, 155, 0.45);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(var(--max), calc(100% - 40px));
  min-height: 72px;
  margin: 0 auto;
  padding: 14px 0;
  backdrop-filter: blur(18px);
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 760;
}

.brand img {
  border-radius: 8px;
  box-shadow: 0 10px 24px rgba(22, 119, 101, 0.18);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 5px;
  border: 1px solid rgba(220, 231, 228, 0.9);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 10px 28px rgba(20, 36, 35, 0.06);
}

.site-nav a {
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: #e8f4f1;
  color: var(--mint-dark);
}

.nav-toggle {
  display: none;
  min-height: 40px;
  padding: 0 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  font-weight: 700;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(42px, 7vw, 88px) 0 clamp(36px, 7vw, 76px);
}

.hero-copy {
  max-width: 590px;
}

.kicker {
  margin: 0 0 14px;
  color: var(--mint-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 10px;
  font-size: clamp(54px, 9vw, 112px);
  line-height: 0.96;
  letter-spacing: 0;
}

.hero-line {
  max-width: 12em;
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 54px);
  font-weight: 780;
  line-height: 1.08;
}

.hero-text,
.section-copy p,
.download-panel p,
.support-hero p,
.document p,
.document li,
.faq-list p,
.privacy-points p {
  color: var(--muted);
}

.hero-text {
  max-width: 520px;
  margin-bottom: 28px;
  font-size: 18px;
}

.hero-actions,
.site-footer nav,
.download-panel {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 760;
  white-space: nowrap;
  transition:
    transform 180ms ease,
    background 180ms ease,
    border-color 180ms ease;
}

.button:active {
  transform: translateY(1px) scale(0.99);
}

.button.primary {
  border: 1px solid var(--mint-dark);
  background: var(--mint-dark);
  color: #ffffff;
}

.button.primary:hover {
  background: #0f6355;
}

.button.secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.82);
  color: var(--ink);
}

.button.secondary:hover {
  border-color: rgba(75, 177, 155, 0.55);
  background: #eff8f6;
}

.button.full {
  width: 100%;
}

.hero-visual {
  min-width: 0;
}

.phone-stack {
  position: relative;
  min-height: clamp(480px, 52vw, 680px);
}

.phone {
  position: absolute;
  width: min(42vw, 285px);
  overflow: hidden;
  border: 8px solid #122321;
  border-radius: 30px;
  background: #122321;
  box-shadow: var(--shadow);
}

.shot-a {
  right: 28%;
  top: 3%;
  z-index: 3;
}

.shot-b {
  right: 0;
  top: 13%;
  z-index: 2;
  transform: rotate(3deg);
}

.shot-c {
  left: 2%;
  top: 24%;
  z-index: 1;
  transform: rotate(-4deg);
  opacity: 0.96;
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.proof-strip div {
  padding: 22px 26px;
  border-right: 1px solid var(--line);
}

.proof-strip div:last-child {
  border-right: 0;
}

.proof-strip strong,
.proof-strip span {
  display: block;
}

.proof-strip strong {
  font-size: 18px;
}

.proof-strip span {
  color: var(--muted);
  font-size: 14px;
}

.section {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(72px, 9vw, 118px) 0;
}

.section-copy {
  max-width: 780px;
  margin-bottom: 34px;
}

.section-copy.centered {
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.section-copy h2,
.privacy-band h2,
.download-panel h2,
.support-hero h1,
.document h1,
.support-strip h2 {
  margin-bottom: 14px;
  font-size: clamp(34px, 5vw, 62px);
  line-height: 1.05;
}

.section-copy p {
  max-width: 68ch;
  font-size: 17px;
}

.section-copy.centered p {
  margin-right: auto;
  margin-left: auto;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.feature-card {
  min-height: 235px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.8);
}

.feature-card span {
  display: inline-flex;
  margin-bottom: 28px;
  color: var(--mint-dark);
  font-size: 13px;
  font-weight: 850;
}

.feature-card h3 {
  margin-bottom: 10px;
  font-size: 23px;
}

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

.accent-card {
  background: #eaf6f3;
  border-color: rgba(75, 177, 155, 0.45);
}

.gallery-section {
  padding-top: 40px;
}

.gallery-shell {
  display: grid;
  grid-template-columns: minmax(260px, 420px) minmax(0, 1fr);
  gap: clamp(20px, 5vw, 60px);
  align-items: center;
  padding: clamp(18px, 4vw, 36px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(140deg, rgba(75, 177, 155, 0.16), rgba(40, 79, 143, 0.08)),
    #ffffff;
}

.gallery-main {
  display: flex;
  justify-content: center;
}

.gallery-main img {
  width: min(100%, 330px);
  border: 8px solid #122321;
  border-radius: 30px;
  background: #122321;
  box-shadow: var(--shadow);
}

.gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(7, minmax(74px, 1fr));
  gap: 10px;
  align-items: stretch;
}

.thumb {
  display: grid;
  gap: 8px;
  min-width: 0;
  padding: 9px;
  border: 1px solid rgba(220, 231, 228, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
  font: inherit;
  font-size: 13px;
  font-weight: 720;
  cursor: pointer;
}

.thumb img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top;
  border-radius: 6px;
}

.thumb.active {
  border-color: var(--mint);
  background: #eaf6f3;
  color: var(--mint-dark);
}

.privacy-band {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1fr);
  gap: clamp(24px, 5vw, 72px);
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(42px, 7vw, 72px);
  border-radius: 8px;
  background: #122321;
  color: #ffffff;
}

.privacy-band .kicker {
  color: #79d9c5;
}

.privacy-points p {
  color: #c4d8d4;
  font-size: 18px;
}

.text-link {
  display: inline-flex;
  margin-top: 8px;
  color: #9ce6d5;
  font-weight: 760;
}

.download {
  padding-top: 72px;
}

.download-panel {
  justify-content: space-between;
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 18px 50px rgba(20, 36, 35, 0.07);
}

.download-panel img {
  flex: 0 0 auto;
  border-radius: 8px;
}

.download-panel div {
  flex: 1 1 420px;
}

.download-panel h2 {
  font-size: clamp(28px, 4vw, 42px);
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 22px;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 42px 0 54px;
  border-top: 1px solid var(--line);
}

.site-footer p {
  max-width: 520px;
  margin-bottom: 0;
  color: var(--muted);
}

.site-footer nav a {
  color: var(--muted);
  font-weight: 700;
}

.site-footer nav a:hover {
  color: var(--mint-dark);
}

.copyright {
  grid-column: 1 / -1;
  font-size: 14px;
}

.document-page,
.support-page {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.document {
  max-width: 860px;
  padding: clamp(52px, 8vw, 96px) 0;
}

.document h1 {
  font-size: clamp(42px, 6vw, 76px);
}

.document section {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.document h2 {
  margin-bottom: 12px;
  font-size: 25px;
}

.document a,
.support-page a:not(.button) {
  color: var(--mint-dark);
  font-weight: 760;
}

.support-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 380px);
  gap: clamp(28px, 6vw, 70px);
  align-items: center;
  padding: clamp(58px, 8vw, 104px) 0 50px;
}

.support-hero p {
  max-width: 68ch;
  font-size: 18px;
}

.support-card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 18px 50px rgba(20, 36, 35, 0.07);
}

.support-card h2 {
  margin-bottom: 12px;
  font-size: 24px;
}

.contact-link {
  display: block;
  margin-bottom: 18px;
  word-break: break-word;
}

.faq-list {
  display: grid;
  max-width: 860px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
}

details {
  border-bottom: 1px solid var(--line);
}

summary {
  cursor: pointer;
  padding: 22px 0;
  font-size: 19px;
  font-weight: 780;
}

details p {
  margin-bottom: 22px;
}

.support-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  margin-bottom: 80px;
  padding: 30px;
  border-radius: 8px;
  background: #eaf6f3;
}

.support-strip p {
  margin-bottom: 0;
  color: var(--muted);
}

@media (max-width: 980px) {
  .hero,
  .privacy-band,
  .gallery-shell,
  .support-hero {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 34px;
  }

  .phone-stack {
    min-height: 570px;
  }

  .phone {
    width: min(56vw, 285px);
  }

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

  .gallery-thumbs {
    grid-template-columns: repeat(4, 1fr);
  }

  .site-footer {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-header {
    width: min(100% - 28px, var(--max));
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
  }

  .site-nav {
    position: absolute;
    top: 68px;
    right: 0;
    display: none;
    width: min(260px, calc(100vw - 28px));
    padding: 10px;
    border-radius: 8px;
    flex-direction: column;
    align-items: stretch;
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    padding: 11px 13px;
  }

  .hero,
  .section,
  .proof-strip,
  .privacy-band,
  .document-page,
  .support-page,
  .site-footer {
    width: min(100% - 28px, var(--max));
  }

  .hero-line {
    max-width: none;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-actions .button {
    width: 100%;
  }

  .phone-stack {
    min-height: 500px;
  }

  .shot-a {
    right: 19%;
  }

  .shot-b {
    right: 0;
    top: 18%;
  }

  .shot-c {
    left: 0;
    top: 30%;
  }

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

  .proof-strip div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .proof-strip div:last-child {
    border-bottom: 0;
  }

  .feature-card {
    min-height: 0;
  }

  .gallery-shell {
    padding: 16px;
  }

  .gallery-thumbs {
    grid-template-columns: repeat(2, 1fr);
  }

  .download-panel,
  .support-strip {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (max-width: 430px) {
  h1 {
    font-size: 48px;
  }

  .hero-line {
    font-size: 31px;
  }

  .phone-stack {
    min-height: 420px;
  }

  .phone {
    width: min(62vw, 225px);
    border-width: 6px;
    border-radius: 24px;
  }

  .gallery-main img {
    border-width: 6px;
    border-radius: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}