:root {
  --red: #2f6f73;
  --red-deep: #244e54;
  --green: #4f6f67;
  --ink: #182026;
  --button: #111418;
  --button-hover: #2b3036;
  --muted: #66727a;
  --line: #e1e7e8;
  --paper: #ffffff;
  --soft: #f6f8f8;
  --tint: #f3f7f6;
  --surface: #fbfcfc;
  --shadow: 0 24px 70px rgba(24, 32, 38, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

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

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

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 56px);
  color: #fff;
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(229, 231, 235, 0.85);
  color: var(--ink);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  letter-spacing: 0;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(36, 78, 84, 0.18);
}

nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2.5vw, 26px);
  font-size: 14px;
  font-weight: 700;
}

.nav-download {
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--button);
  color: #fff;
}

.language-switch {
  min-width: 38px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--red-deep);
  background: var(--tint);
  font-size: 12px;
  font-weight: 900;
  text-align: center;
}

.language-switch:hover {
  color: #fff;
  border-color: var(--red);
  background: var(--red);
}

.hero {
  position: relative;
  min-height: 92vh;
  overflow: hidden;
  display: grid;
  align-items: center;
  padding: 112px clamp(22px, 7vw, 96px) 72px;
  color: var(--ink);
  background: #fff;
}

.hero-media {
  position: absolute;
  top: 50%;
  right: clamp(22px, 7vw, 96px);
  width: clamp(430px, 43vw, 650px);
  height: clamp(530px, 76vh, 720px);
  transform: translateY(-43%);
  overflow: hidden;
  border-radius: clamp(26px, 4vw, 42px);
  pointer-events: none;
}

.hero-media::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 24px 70px rgba(17, 24, 39, 0.12);
}

.hero-media img {
  position: absolute;
  z-index: 1;
  left: 50%;
  top: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  object-fit: contain;
  object-position: center top;
  border-radius: inherit;
  transform: translateX(-50%);
}

.hero-shade {
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: var(--line);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(540px, 43vw);
}

.eyebrow {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.eyebrow.red {
  color: var(--red);
}

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

h1 {
  margin-bottom: 10px;
  font-size: clamp(56px, 11vw, 132px);
  line-height: 0.9;
  font-weight: 950;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 5vw, 58px);
  line-height: 1.05;
  font-weight: 950;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.2;
  font-weight: 900;
}

.hero-line {
  margin-bottom: 18px;
  font-size: clamp(22px, 3.2vw, 38px);
  font-weight: 800;
  line-height: 1.2;
}

.hero-copy {
  width: min(620px, 100%);
  margin-bottom: 30px;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 21px);
}

.market-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: -10px 0 28px;
}

.market-pills span {
  padding: 7px 11px;
  color: var(--red-deep);
  border: 1px solid #d9e6e3;
  border-radius: 999px;
  background: var(--tint);
  font-size: 13px;
  font-weight: 850;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-download-note {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 8px;
  font-weight: 900;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  color: #fff;
  background: var(--button);
  box-shadow: 0 14px 34px rgba(17, 24, 39, 0.16);
}

.button.primary.light {
  color: #fff;
  background: var(--button);
}

.button.primary:hover,
.button.primary.light:hover,
.nav-download:hover {
  background: var(--button-hover);
}

.button.secondary {
  color: var(--ink);
  border: 1px solid var(--line);
  background: #fff;
}

.button.platform-ios {
  color: #fff;
  background: linear-gradient(135deg, #2f6f73, #244e54);
  box-shadow: 0 14px 34px rgba(36, 78, 84, 0.2);
}

.button.platform-ios:hover {
  background: linear-gradient(135deg, #244e54, #183b40);
}

.scroll-cue {
  position: absolute;
  left: clamp(22px, 7vw, 96px);
  bottom: 24px;
  z-index: 2;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.section-inner {
  width: min(1180px, calc(100% - 44px));
  margin: 0 auto;
}

.overview-band {
  padding: clamp(46px, 7vw, 86px) 0;
  background: var(--tint);
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}

.overview-grid,
.privacy-grid {
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(300px, 1.2fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: start;
}

.overview-grid p:not(.eyebrow),
.privacy-grid p {
  color: var(--muted);
  font-size: 20px;
}

.metrics-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 138px;
  padding: 30px clamp(18px, 3vw, 42px);
  border-right: 1px solid var(--line);
  text-align: center;
}

.metric:last-child {
  border-right: 0;
}

.metric strong,
.metric span {
  display: block;
}

.metric strong {
  color: var(--red-deep);
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1;
  font-weight: 950;
}

.metric span {
  margin-top: 12px;
  color: var(--muted);
  font-weight: 700;
}

.section {
  padding: clamp(66px, 9vw, 120px) 0;
}

.section-heading {
  width: min(1040px, 100%);
  margin-bottom: 40px;
}

.section-heading h2 {
  font-size: clamp(30px, 4.2vw, 52px);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature-card {
  min-height: 250px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
}

.feature-icon {
  display: inline-flex;
  margin-bottom: 34px;
  color: var(--red);
  font-weight: 950;
}

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

.visual-story {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(360px, 1.15fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  padding: clamp(60px, 8vw, 110px) clamp(22px, 7vw, 96px);
  background: var(--tint);
}

.ai-section {
  display: grid;
  grid-template-columns: minmax(300px, 1fr) minmax(280px, 420px);
  gap: clamp(28px, 6vw, 76px);
  align-items: center;
  padding: clamp(64px, 9vw, 120px) clamp(22px, 7vw, 96px);
  background: #fff;
  border-top: 1px solid var(--line);
}

.ai-copy p:not(.eyebrow) {
  color: var(--muted);
  font-size: 19px;
}

.ai-points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 28px 0 18px;
}

.ai-points div {
  min-height: 124px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.ai-points strong,
.ai-points span {
  display: block;
}

.ai-points strong {
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 950;
}

.ai-points span {
  color: var(--muted);
  font-size: 15px;
}

.ai-note {
  margin-bottom: 0;
  font-size: 15px !important;
}

.ai-shot {
  margin: 0;
  justify-self: center;
}

.ai-shot img {
  width: min(100%, 390px);
  max-height: 760px;
  object-fit: contain;
  border-radius: 8px;
  border: 1px solid var(--line);
  box-shadow: 0 22px 58px rgba(17, 24, 39, 0.16);
}

.ios-section {
  padding: clamp(66px, 9vw, 120px) 0;
  color: #fff;
  background:
    radial-gradient(circle at 78% 18%, rgba(126, 211, 201, 0.2), transparent 32%),
    linear-gradient(145deg, #16272b, #244e54 55%, #2f6f73);
}

.ios-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(420px, 1.18fr);
  gap: clamp(34px, 7vw, 86px);
  align-items: center;
}

.ios-copy .eyebrow {
  color: #9fd9d2;
}

.ios-copy p:not(.eyebrow) {
  color: rgba(255, 255, 255, 0.76);
  font-size: 19px;
}

.ios-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
  margin-top: 28px;
}

.ios-actions .platform-ios {
  color: var(--ink);
  background: #fff;
  box-shadow: none;
}

.ios-actions .platform-ios:hover {
  background: #eaf2f1;
}

.ios-actions .text-link {
  margin: 0;
  color: #fff;
}

.ios-feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.ios-feature-list article {
  min-height: 142px;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
}

.ios-feature-list strong,
.ios-feature-list span {
  display: block;
}

.ios-feature-list strong {
  margin-bottom: 8px;
  font-size: 18px;
}

.ios-feature-list span {
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
}

.story-copy p:not(.eyebrow) {
  color: var(--muted);
  font-size: 19px;
}

.check-list {
  display: grid;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  font-weight: 800;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 14px;
  height: 3px;
  background: var(--red);
}

.wide-shot {
  margin: 0;
  align-self: center;
}

.wide-shot img {
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: 430px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--line);
  box-shadow: 0 18px 48px rgba(17, 24, 39, 0.1);
}

.market-shot img {
  aspect-ratio: auto;
  max-height: 720px;
  object-fit: contain;
  border-radius: 28px;
  background: #fff;
}

.market-story {
  background:
    radial-gradient(circle at 84% 12%, rgba(47, 111, 115, 0.1), transparent 28%),
    var(--tint);
}

.widget-story {
  grid-template-columns: minmax(360px, 1.15fr) minmax(280px, 0.85fr);
  background:
    radial-gradient(circle at 12% 88%, rgba(47, 111, 115, 0.12), transparent 30%),
    #fff;
  border-top: 1px solid var(--line);
}

.widget-shot img {
  aspect-ratio: 34 / 25;
  max-height: 560px;
  object-fit: cover;
  object-position: center;
  border-radius: 28px;
}

.screenshots {
  background: #fff;
}

.gallery {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(300px, 1.2fr);
  gap: clamp(24px, 5vw, 70px);
  align-items: center;
  margin-bottom: 48px;
}

.gallery-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.tab {
  min-width: 72px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: #fff;
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}

.tab.active {
  color: #fff;
  border-color: var(--red);
  background: var(--red);
}

.gallery-copy p {
  color: var(--muted);
  font-size: 19px;
}

.phone-stage {
  display: grid;
  place-items: center;
  min-height: 640px;
  padding: 26px;
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(47, 111, 115, 0.1), rgba(79, 111, 103, 0.08)),
    var(--soft);
}

.phone-stage img {
  width: min(560px, 100%);
  max-height: 760px;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 20px 54px rgba(17, 24, 39, 0.2);
}

.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.screenshot-grid figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}

.screenshot-grid img {
  width: 100%;
  height: 360px;
  object-fit: contain;
  object-position: top center;
  background: var(--soft);
}

.screenshot-grid figcaption {
  min-height: 82px;
  padding: 18px;
  color: var(--muted);
  font-weight: 700;
}

.privacy-band {
  padding: clamp(60px, 8vw, 104px) 0;
  color: var(--ink);
  background: #fff;
  border-top: 1px solid var(--line);
}

.text-link {
  display: inline-flex;
  margin-top: 8px;
  color: var(--ink);
  font-weight: 900;
  text-decoration: underline;
  text-underline-offset: 5px;
}

.download-section {
  padding: clamp(54px, 8vw, 110px) 22px;
  background: var(--tint);
  border-top: 1px solid var(--line);
}

.download-panel {
  width: min(1040px, 100%);
  margin: 0 auto;
  color: var(--ink);
  text-align: center;
}

.download-panel p:not(.eyebrow) {
  width: min(760px, 100%);
  margin: 0 auto 28px;
  color: var(--muted);
  font-size: 18px;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
  text-align: left;
}

.download-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-height: 330px;
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 18px 48px rgba(17, 24, 39, 0.08);
}

.download-card.featured {
  border-color: #b9d4d0;
  background: linear-gradient(145deg, #fff, #f0f7f6);
}

.platform-label {
  display: inline-flex;
  margin-bottom: 22px;
  padding: 6px 10px;
  color: var(--red-deep);
  border-radius: 999px;
  background: var(--tint);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.download-card p {
  width: 100% !important;
  margin: 0 0 28px !important;
  font-size: 16px !important;
  text-align: left;
}

.download-card .button {
  width: 100%;
  margin-top: auto;
}

.download-footnote {
  margin-top: 24px !important;
  margin-bottom: 0 !important;
  font-size: 14px !important;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  padding: 26px clamp(18px, 4vw, 56px);
  color: var(--muted);
  font-size: 14px;
  border-top: 1px solid var(--line);
}

.site-footer span:first-child {
  color: var(--ink);
  font-weight: 950;
}

.legal-page {
  padding-top: 88px;
}

.legal-document {
  width: min(840px, calc(100% - 36px));
  margin: 0 auto;
  padding: clamp(42px, 8vw, 78px) 0;
}

.legal-document h1 {
  margin-bottom: 18px;
  font-size: clamp(38px, 7vw, 72px);
}

.legal-document h2 {
  margin-top: 38px;
  font-size: clamp(24px, 4vw, 36px);
}

.legal-document p,
.legal-document li {
  color: var(--muted);
  font-size: 17px;
}

.legal-document ul {
  display: grid;
  gap: 10px;
  padding-left: 20px;
}

@media (max-width: 920px) {
  .site-header {
    align-items: flex-start;
  }

  nav {
    gap: 10px;
    font-size: 13px;
  }

  nav a:not(.nav-download) {
    display: none;
  }

  .hero {
    min-height: 92vh;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding-top: 108px;
  }

  .hero-media {
    position: relative;
    inset: auto;
    order: 2;
    width: min(94vw, 620px);
    height: auto;
    aspect-ratio: 1419 / 1600;
    transform: none;
    margin: 24px auto 0;
    opacity: 1;
  }

  .hero-media::before {
    inset: 0;
  }

  .hero-media img {
    left: 50%;
    top: 0;
    width: 100%;
    height: 100%;
    max-width: none;
    transform: translateX(-50%);
  }

  .hero-content {
    order: 1;
    width: 100%;
  }

  .hero-content {
    align-self: start;
  }

  .overview-grid,
  .privacy-grid,
  .ai-section,
  .ios-layout,
  .visual-story,
  .gallery {
    grid-template-columns: 1fr;
  }

  .ai-section {
    padding-left: 18px;
    padding-right: 18px;
  }

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

  .phone-stage {
    min-height: auto;
  }
}

@media (min-width: 921px) {
  .hero h1 {
    font-size: clamp(64px, 7.5vw, 104px);
  }

  #features-title {
    white-space: nowrap;
  }
}

@media (max-width: 620px) {
  .site-header {
    padding: 14px 16px;
  }

  .brand span {
    font-size: 14px;
  }

  .nav-download {
    padding: 8px 10px;
  }

  .hero {
    min-height: 92vh;
    padding: 94px 18px 58px;
  }

  .hero-copy {
    font-size: 16px;
  }

  .market-pills {
    margin-bottom: 22px;
  }

  .market-pills span {
    font-size: 12px;
  }

  .button {
    width: 100%;
  }

  .scroll-cue {
    left: 18px;
  }

  .section-inner {
    width: min(100% - 32px, 1180px);
  }

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

  .metric {
    min-height: 112px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .metric:last-child {
    border-bottom: 0;
  }

  .visual-story {
    padding-left: 16px;
    padding-right: 16px;
  }

  .ai-points {
    grid-template-columns: 1fr;
  }

  .ios-feature-list,
  .download-grid {
    grid-template-columns: 1fr;
  }

  .phone-stage {
    padding: 14px;
  }

  .screenshot-grid img {
    height: 460px;
  }

  .site-footer {
    display: grid;
  }
}