:root {
  color-scheme: light;
  --bg: #ffffff;
  --bg-soft: #f6f7fb;
  --text: #181a20;
  --muted: #656b78;
  --line: #e8eaf0;
  --brand: #6657e8;
  --brand-deep: #3e38a8;
  --accent: #19a89f;
  --surface: #ffffff;
  --shadow: 0 24px 52px rgba(35, 39, 61, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: #fbfbfd;
  line-height: 1.7;
  letter-spacing: 0;
}

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

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

.container {
  width: min(1040px, calc(100% - 48px));
  margin: 0 auto;
}

.section {
  padding: 108px 0;
}

.section-band {
  background:
    linear-gradient(180deg, #ffffff 0%, #f7f8fc 100%);
}

.hero {
  min-height: 100vh;
  display: grid;
  align-items: center;
  padding: 96px 0;
}

.hero__inner {
  display: grid;
  justify-items: center;
  gap: 34px;
  text-align: center;
}

.hero__content {
  display: grid;
  justify-items: center;
  width: 100%;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--brand-deep);
  font-size: 13px;
  font-weight: 760;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  color: var(--text);
  line-height: 1.12;
  font-weight: 780;
}

h1 {
  max-width: 880px;
  font-size: 56px;
}

h2 {
  font-size: 36px;
}

.hero__name-en {
  max-width: 760px;
  margin: 16px auto 0;
  color: #7a8190;
  font-size: 16px;
  font-weight: 520;
}

.hero__lead {
  max-width: 720px;
  margin: 24px auto 0;
  color: #414754;
  font-size: 20px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
}

.button--primary {
  color: #ffffff;
  background: var(--brand);
  box-shadow: 0 14px 30px rgba(102, 87, 232, 0.28);
}

.button--primary:hover {
  background: var(--brand-deep);
}

.button--ghost {
  color: var(--text);
  border-color: var(--line);
  background: #ffffff;
}

.button--ghost:hover {
  border-color: #cbcdeb;
  color: var(--brand-deep);
}

.hero__visual {
  order: -1;
  display: grid;
  place-items: center;
  width: min(320px, 70vw);
}

.hero__visual img {
  width: 100%;
  filter: drop-shadow(0 18px 28px rgba(102, 87, 232, 0.18));
}

.split-layout {
  display: grid;
  justify-items: center;
  gap: 36px;
  text-align: center;
}

.section-heading p:not(.eyebrow) {
  max-width: 520px;
  margin: 18px auto 0;
  color: var(--muted);
  font-size: 17px;
}

.prose {
  display: grid;
  gap: 18px;
  max-width: 820px;
  margin: 0 auto;
  color: #333947;
  font-size: 17px;
  text-align: left;
}

.prose p {
  margin: 0;
}

.product-layout {
  display: grid;
  justify-items: center;
  gap: 40px;
  text-align: center;
}

.product-copy p:not(.eyebrow) {
  max-width: 680px;
  margin: 22px auto 0;
  color: #414754;
  font-size: 18px;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 18px;
}

.tag-row span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid #dfe2ee;
  border-radius: 8px;
  color: #343947;
  background: #ffffff;
  font-size: 14px;
  font-weight: 650;
}

.product-card__head .tag-row {
  justify-content: flex-start;
}

.text-link {
  display: inline-flex;
  margin-top: 0;
  color: var(--brand-deep);
  font-weight: 760;
}

.text-link:hover {
  color: var(--accent);
}

.products-grid {
  display: grid;
  grid-template-columns: 1fr;
  justify-items: center;
  gap: 104px;
  width: min(980px, 100%);
}

.product-card {
  display: grid;
  align-items: center;
  justify-content: center;
  gap: 42px;
  width: 100%;
}

.product-card--ip {
  grid-template-columns: 190px 240px 330px;
  width: min(920px, 100%);
}

.product-card__head {
  display: grid;
  justify-items: start;
  gap: 0;
  text-align: left;
}

.product-card h3 {
  margin: 0;
  color: var(--text);
  font-size: 28px;
  line-height: 1.15;
}

.ip-showcase {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  justify-items: center;
}

.ip-figure {
  display: grid;
  place-items: center;
  min-height: 300px;
  margin: 0;
}

.ip-figure img {
  width: min(280px, 86%);
  filter: drop-shadow(0 18px 24px rgba(35, 39, 61, 0.12));
}

.social-qr-card span {
  color: var(--brand-deep);
  font-size: 13px;
  font-weight: 760;
  text-transform: uppercase;
}

.social-qr-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.social-qr-card {
  display: grid;
  justify-items: center;
  gap: 16px;
  margin: 0;
  text-align: center;
}

.social-qr-card img {
  width: 172px;
  aspect-ratio: 1;
  object-fit: contain;
}

.social-qr-card div {
  display: grid;
  gap: 4px;
}

.social-qr-card strong {
  color: #252a36;
  font-size: 16px;
  font-weight: 720;
}

.product-card--ai {
  display: grid;
  grid-template-columns: 340px 300px;
  width: min(720px, 100%);
  justify-content: center;
  justify-items: center;
  gap: 72px;
}

.ai-logo {
  display: grid;
  place-items: center;
  width: min(360px, 100%);
  min-height: 220px;
  margin: 0;
}

.ai-logo img {
  width: min(320px, 100%);
  border-radius: 8px;
  filter: drop-shadow(0 14px 20px rgba(24, 26, 32, 0.08));
}

.ai-summary {
  display: grid;
  align-content: center;
  justify-self: stretch;
  justify-items: center;
  gap: 12px;
  text-align: center;
}

.ai-summary h3 {
  margin: 0;
  font-size: 32px;
}

.ai-summary p {
  margin: 0;
  color: #414754;
  font-size: 17px;
}

.contact-layout {
  display: grid;
  justify-items: center;
  gap: 40px;
  text-align: center;
}

.contact-list {
  display: grid;
  gap: 18px;
  width: min(760px, 100%);
  margin: 0 auto;
  font-style: normal;
}

.contact-list div {
  display: grid;
  gap: 8px;
  padding: 0 0 18px;
  border-bottom: 1px solid var(--line);
}

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

.contact-list strong {
  color: #252a36;
  font-size: 18px;
  font-weight: 720;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #101218;
  color: rgba(255, 255, 255, 0.72);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 26px 0;
  font-size: 14px;
}

@media (max-width: 900px) {
  .hero__inner,
  .split-layout,
  .product-layout,
  .contact-layout {
    gap: 40px;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

  .product-card--ip,
  .product-card--ai {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 32px;
    text-align: center;
  }

  .product-card__head,
  .ai-summary {
    justify-items: center;
    text-align: center;
  }

  .product-card__head .tag-row {
    justify-content: center;
  }

  h1 {
    font-size: 42px;
  }

  h2 {
    font-size: 30px;
  }

  .hero__lead {
    font-size: 18px;
  }

  .section,
  .hero {
    padding: 68px 0;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 32px, 1120px);
  }

  h1 {
    font-size: 34px;
  }

  h2 {
    font-size: 27px;
  }

  .hero__actions {
    flex-direction: column;
    width: min(100%, 320px);
  }

  .button {
    width: 100%;
  }

  .hero__visual {
    width: min(250px, 76vw);
  }

  .ip-showcase,
  .social-qr-grid {
    grid-template-columns: 1fr;
  }

  .ip-showcase {
    gap: 24px;
    padding: 0;
  }

  .ip-figure {
    min-height: 240px;
  }

  .social-qr-card {
    padding: 26px 20px;
  }

  .social-qr-card img {
    width: 158px;
  }

  .product-card__head {
    padding: 0;
  }

  .product-card h3,
  .ai-summary h3 {
    font-size: 26px;
  }

  .product-card--ai {
    gap: 24px;
    padding: 0;
  }

  .ai-logo {
    min-height: 160px;
  }

  .contact-list strong {
    font-size: 16px;
  }

  .footer__inner {
    flex-direction: column;
  }
}