:root {
  color-scheme: light;
  --ink: #121b24;
  --muted: #5f6d7a;
  --line: #dbe5ec;
  --paper: #ffffff;
  --soft: #f4f8fb;
  --green: #07845a;
  --cyan: #18a8b8;
  --blue: #2367c8;
  --navy: #0f2230;
  --gold: #f0b23d;
  --shadow: 0 26px 80px rgba(13, 35, 49, 0.16);
  --content-width: 1120px;
  --screen-height: 720px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    Inter, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui,
    sans-serif;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 6vw, 80px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(220, 227, 234, 0.82);
  backdrop-filter: blur(18px);
}

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

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

nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-size: 15px;
}

nav a:hover {
  color: var(--green);
}

.section,
.section-band {
  min-height: var(--screen-height);
  padding: 56px clamp(20px, 6vw, 80px);
}

.section-band {
  background:
    linear-gradient(90deg, rgba(24, 168, 184, 0.09) 1px, transparent 1px),
    linear-gradient(0deg, rgba(24, 168, 184, 0.07) 1px, transparent 1px),
    radial-gradient(circle at 16% 16%, rgba(7, 132, 90, 0.12), transparent 34%),
    linear-gradient(180deg, #fbfdff, #eef6f8);
  background-size: 36px 36px, 36px 36px, auto, auto;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 24px;
  font-size: clamp(38px, 4.5vw, 58px);
  line-height: 1.08;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(28px, 3.4vw, 44px);
  line-height: 1.12;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
}

.lead,
.section-heading p,
.product-copy p,
.privacy-section p,
.download-product p,
.feature-card p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.78;
}

.lead {
  max-width: 640px;
  font-size: 19px;
}

.hero {
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  right: clamp(20px, 8vw, 120px);
  top: 74px;
  width: 280px;
  height: 280px;
  border: 1px solid rgba(24, 168, 184, 0.28);
  transform: rotate(18deg);
  pointer-events: none;
}

.hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(330px, 0.54fr);
  align-items: center;
  gap: clamp(42px, 6vw, 86px);
  width: min(100%, var(--content-width));
  margin: 0 auto;
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 680px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 28px 0 26px;
}

.primary-action,
.secondary-action,
.platform-row a,
.platform-row button,
.privacy-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 0;
  border-radius: 8px;
  font: inherit;
  font-weight: 900;
}

.primary-action,
.platform-row.active a,
.privacy-links a {
  background: var(--green);
  color: #fff;
  box-shadow: 0 14px 30px rgba(7, 132, 90, 0.22);
}

.secondary-action {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.86);
  color: var(--ink);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
  gap: 12px;
}

.hero-stats div {
  padding: 16px;
  border: 1px solid rgba(219, 229, 236, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 10px 32px rgba(13, 35, 49, 0.07);
}

.hero-stats dt {
  color: var(--muted);
  font-size: 13px;
}

.hero-stats dd {
  margin: 6px 0 0;
  font-size: 18px;
  font-weight: 900;
}

.hero-note {
  display: grid;
  gap: 6px;
  max-width: 620px;
  margin-top: 14px;
  padding: 14px 16px;
  border: 1px solid rgba(24, 168, 184, 0.26);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 12px 34px rgba(13, 35, 49, 0.08);
}

.hero-note span {
  color: var(--muted);
  line-height: 1.65;
}

.hero-panel {
  padding: clamp(22px, 3vw, 30px);
  border: 1px solid rgba(24, 168, 184, 0.28);
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(24, 168, 184, 0.12) 1px, transparent 1px),
    linear-gradient(0deg, rgba(24, 168, 184, 0.1) 1px, transparent 1px),
    rgba(255, 255, 255, 0.88);
  background-size: 28px 28px;
  box-shadow: var(--shadow);
}

.hero-panel h2 {
  margin-bottom: 20px;
  font-size: clamp(24px, 2.3vw, 32px);
}

.hero-panel-list {
  display: grid;
  gap: 12px;
}

.hero-panel-list article {
  padding: 16px;
  border: 1px solid rgba(219, 229, 236, 0.92);
  border-radius: 8px;
  background: #fff;
}

.hero-panel-list strong,
.hero-panel-list span {
  display: block;
}

.hero-panel-list span {
  margin-top: 6px;
  color: var(--muted);
  line-height: 1.62;
}

.section-heading {
  max-width: 820px;
  margin-bottom: 30px;
}

.screen-layout {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 28px;
  width: min(100%, var(--content-width));
  min-height: calc(var(--screen-height) - 112px);
  margin: 0 auto;
}

.screenshot-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  max-width: none;
}

.screenshot-row figure {
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 12px;
  margin: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 14px 34px rgba(13, 35, 49, 0.08);
}

.screen-crop {
  height: 300px;
  overflow: hidden;
  border: 6px solid var(--navy);
  border-radius: 24px;
  background: #f7fbfd;
  box-shadow: 0 12px 28px rgba(13, 35, 49, 0.13);
}

.screen-crop img {
  display: block;
  width: min(100%, 230px);
  height: auto;
  margin: 0 auto;
  object-fit: contain;
  object-position: top center;
}

.screenshot-row figcaption {
  display: grid;
  gap: 6px;
  min-height: 78px;
}

.screenshot-row figcaption strong {
  font-size: 17px;
}

.screenshot-row figcaption span {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.62;
}

.product-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.7fr);
  align-items: center;
  gap: clamp(34px, 6vw, 74px);
  width: 100%;
  max-width: none;
  padding-right: max(clamp(20px, 6vw, 80px), calc((100vw - var(--content-width)) / 2));
  padding-left: max(clamp(20px, 6vw, 80px), calc((100vw - var(--content-width)) / 2));
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.capability-grid article,
.download-product,
.privacy-links {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 18px 54px rgba(13, 35, 49, 0.08);
}

.capability-grid article {
  padding: 18px;
}

.capability-grid strong {
  display: block;
  margin-bottom: 8px;
  font-size: 17px;
}

.capability-grid span {
  color: var(--muted);
  line-height: 1.68;
}

.product-panel {
  display: grid;
  gap: 14px;
  padding: clamp(24px, 4vw, 36px);
  border: 1px solid rgba(24, 168, 184, 0.28);
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(24, 168, 184, 0.12) 1px, transparent 1px),
    linear-gradient(0deg, rgba(24, 168, 184, 0.1) 1px, transparent 1px),
    rgba(255, 255, 255, 0.84);
  background-size: 28px 28px;
  box-shadow: var(--shadow);
}

.product-panel strong {
  margin-bottom: 8px;
  font-size: 28px;
}

.product-panel span {
  display: flex;
  align-items: center;
  min-height: 54px;
  padding: 0 18px;
  border: 1px solid rgba(219, 229, 236, 0.9);
  border-radius: 8px;
  background: #fff;
  color: var(--navy);
  font-weight: 900;
}

.product-panel span::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-right: 12px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(24, 168, 184, 0.14);
}

.product-panel-muted {
  background:
    linear-gradient(90deg, rgba(7, 132, 90, 0.1) 1px, transparent 1px),
    linear-gradient(0deg, rgba(7, 132, 90, 0.08) 1px, transparent 1px),
    rgba(255, 255, 255, 0.9);
  background-size: 28px 28px;
}

.download-hub {
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: #fff;
}

.download-hub > .section-heading,
.download-hub > .download-columns {
  width: min(100%, var(--content-width));
  margin-right: auto;
  margin-left: auto;
}

.download-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.download-product {
  padding: 20px;
}

.download-product-head {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 16px;
  align-items: center;
  margin-bottom: 16px;
}

.download-product-head img {
  width: 72px;
  height: 72px;
  border-radius: 16px;
  object-fit: cover;
}

.platform-list {
  display: grid;
  gap: 12px;
}

.platform-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.platform-row strong,
.platform-row span {
  display: block;
}

.platform-row span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 14px;
}

.platform-row.disabled {
  opacity: 0.72;
}

.platform-row.disabled button {
  min-width: 108px;
  background: #dfe6ec;
  color: #7b8792;
  cursor: not-allowed;
}

.about-section {
  display: flex;
  align-items: center;
}

.about-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.72fr);
  align-items: center;
  gap: clamp(34px, 6vw, 74px);
  width: min(100%, var(--content-width));
  margin: 0 auto;
}

.about-copy p {
  max-width: 720px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.86;
}

.company-card {
  padding: clamp(24px, 4vw, 36px);
  border: 1px solid rgba(24, 168, 184, 0.28);
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(24, 168, 184, 0.12) 1px, transparent 1px),
    linear-gradient(0deg, rgba(24, 168, 184, 0.1) 1px, transparent 1px),
    rgba(255, 255, 255, 0.88);
  background-size: 28px 28px;
  box-shadow: var(--shadow);
}

.company-card > strong {
  display: block;
  margin-bottom: 18px;
  font-size: 24px;
}

.company-card dl {
  display: grid;
  gap: 12px;
  margin: 0;
}

.company-card dl div {
  padding: 14px 16px;
  border: 1px solid rgba(219, 229, 236, 0.92);
  border-radius: 8px;
  background: #fff;
}

.company-card dt {
  color: var(--muted);
  font-size: 13px;
}

.company-card dd {
  margin: 6px 0 0;
  color: var(--ink);
  font-weight: 900;
  line-height: 1.55;
}

.privacy-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.42fr);
  align-items: center;
  gap: clamp(34px, 6vw, 74px);
  width: 100%;
  max-width: none;
  padding-right: max(clamp(20px, 6vw, 80px), calc((100vw - var(--content-width)) / 2));
  padding-left: max(clamp(20px, 6vw, 80px), calc((100vw - var(--content-width)) / 2));
}

.privacy-links {
  display: grid;
  gap: 14px;
  padding: 22px;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 26px max(clamp(20px, 6vw, 80px), calc((100vw - var(--content-width)) / 2));
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

footer a {
  color: var(--muted);
}

.footer-items {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px 18px;
}

.policy-page {
  background: #fff;
}

.policy-hero {
  min-height: auto;
  padding-top: 72px;
  padding-bottom: 56px;
}

.policy-hero h1 {
  max-width: 900px;
  margin-bottom: 22px;
  font-size: clamp(38px, 5vw, 60px);
}

.policy-meta {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.policy-content {
  max-width: 980px;
  margin: 0 auto;
  padding-top: 64px;
}

.policy-content article {
  padding: 0 0 34px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 34px;
}

.policy-content article:last-child {
  border-bottom: 0;
  margin-bottom: 0;
}

.policy-content h2 {
  font-size: clamp(24px, 3vw, 34px);
}

.policy-content p,
.policy-content li {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
}

.policy-content ul {
  padding-left: 22px;
}

.policy-content strong {
  color: var(--ink);
}

@media (max-width: 1080px) {
  .hero-layout,
  .product-section,
  .about-layout,
  .privacy-section,
  .download-columns {
    grid-template-columns: 1fr;
  }

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

  .section,
  .section-band,
  .hero {
    min-height: auto;
  }

  .hero-panel {
    max-width: 720px;
  }
}

@media (max-width: 720px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    width: 100%;
    gap: 14px;
    justify-content: flex-start;
    overflow-x: auto;
    white-space: nowrap;
  }

  .section,
  .section-band {
    padding: 58px 20px;
  }

  .product-section,
  .privacy-section {
    padding-right: 20px;
    padding-left: 20px;
  }

  h1 {
    font-size: 40px;
  }

  .hero-stats,
  .capability-grid {
    grid-template-columns: 1fr;
  }

  .screen-crop {
    height: 260px;
  }

  .platform-row {
    grid-template-columns: 1fr;
  }

  footer {
    flex-direction: column;
  }

  .footer-items {
    justify-content: flex-start;
  }
}