:root {
  --color-primary: #2467c9;
  --color-primary-dark: #163e78;
  --color-primary-soft: #eaf2ff;
  --color-accent: #cfa44b;
  --color-text: #172033;
  --color-text-light: #5f6d83;
  --color-muted: #8b97aa;
  --color-bg: #ffffff;
  --color-bg-light: #f6f8fb;
  --color-bg-blue: #f1f6ff;
  --color-border: #dfe6f1;
  --shadow-sm: 0 8px 24px rgba(31, 58, 102, 0.08);
  --shadow-md: 0 18px 48px rgba(31, 58, 102, 0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --container-width: 1180px;
}

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul {
  margin: 0;
  padding: 0;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.93);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(223, 230, 241, 0.8);
}

.site-header__inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-primary);
  font-size: 18px;
  font-weight: 750;
  white-space: nowrap;
}

.site-header__logo-mark {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  box-shadow: 0 10px 24px rgba(36, 103, 201, 0.22);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  border-radius: var(--radius-sm);
  color: var(--color-text-light);
  font-size: 14px;
  font-weight: 600;
}

.site-nav__link:hover,
.site-nav__link--active {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.hero--home {
  overflow: hidden;
  background:
    linear-gradient(120deg, rgba(234, 242, 255, 0.94) 0%, rgba(255, 255, 255, 0.96) 52%, rgba(246, 248, 251, 1) 100%);
  border-bottom: 1px solid var(--color-border);
}

.hero__grid {
  min-height: 650px;
  display: grid;
  grid-template-columns: 0.94fr 1.06fr;
  align-items: center;
  gap: 54px;
  padding: 74px 0 82px;
}

.eyebrow,
.section-header__eyebrow {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin-bottom: 16px;
  padding: 6px 12px;
  border: 1px solid rgba(36, 103, 201, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 700;
}

.hero__title {
  max-width: 620px;
  font-size: clamp(38px, 5vw, 64px);
  line-height: 1.04;
  font-weight: 850;
  letter-spacing: 0;
}

.hero__subtitle {
  max-width: 600px;
  margin-top: 22px;
  color: var(--color-text-light);
  font-size: 17px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 14px;
}

.button--primary {
  color: #fff;
  background: var(--color-primary);
  box-shadow: 0 14px 28px rgba(36, 103, 201, 0.22);
}

.button--secondary {
  color: var(--color-primary);
  border: 1px solid rgba(36, 103, 201, 0.22);
  background: #fff;
}

.hero__visual {
  position: relative;
  isolation: isolate;
}

.hero__visual::before {
  content: "";
  position: absolute;
  inset: 9% -6% -7% 10%;
  z-index: -1;
  border-radius: 32px;
  background: linear-gradient(135deg, rgba(36, 103, 201, 0.12), rgba(207, 164, 75, 0.11));
  filter: blur(8px);
}

.hero__image,
.cta-banner__image,
.about-intro__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(223, 230, 241, 0.9);
  box-shadow: var(--shadow-md);
}

.hero__image {
  aspect-ratio: 16 / 9;
}

.info-strip {
  padding: 48px 0;
  background: #fff;
}

.info-strip__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.info-strip__item {
  min-height: 174px;
  padding: 26px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-light);
}

.info-strip__label {
  display: block;
  margin-bottom: 10px;
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 800;
}

.info-strip__item strong {
  display: block;
  margin-bottom: 8px;
  font-size: 22px;
  line-height: 1.25;
}

.info-strip__item p {
  color: var(--color-text-light);
  font-size: 14px;
}

.features,
.about-features {
  padding: 76px 0;
  background: var(--color-bg-light);
}

.section-header {
  max-width: 720px;
  margin: 0 auto 40px;
  text-align: center;
}

.section-header .section-header__eyebrow {
  margin-left: auto;
  margin-right: auto;
}

.section-header__title,
.cta-banner__title,
.about-intro__title {
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.2;
  font-weight: 820;
}

.section-header__subtitle {
  margin-top: 12px;
  color: var(--color-text-light);
}

.features__grid,
.about-features__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.feature-card {
  min-height: 238px;
  padding: 28px 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.feature-card__icon {
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  border-radius: 14px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.feature-card__icon svg {
  width: 25px;
  height: 25px;
}

.feature-card__title {
  margin-bottom: 8px;
  font-size: 17px;
  font-weight: 780;
}

.feature-card__desc {
  color: var(--color-text-light);
  font-size: 14px;
}

.cta-banner {
  padding: 82px 0;
  background: #fff;
}

.cta-banner__grid {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  align-items: center;
  gap: 48px;
}

.cta-banner__text {
  margin-top: 18px;
  color: var(--color-text-light);
  font-size: 16px;
}

.cta-banner__visual {
  min-height: 360px;
}

.cta-banner__image {
  aspect-ratio: 4 / 3;
}

.check-list {
  display: grid;
  gap: 10px;
  margin-top: 24px;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  color: var(--color-text-light);
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.52em;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--color-accent);
}

.page-hero,
.privacy-hero {
  padding: 72px 0 58px;
  text-align: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(36, 103, 201, 0.12), transparent 46%),
    linear-gradient(180deg, var(--color-bg-blue), #fff);
  border-bottom: 1px solid var(--color-border);
}

.page-hero .eyebrow,
.privacy-hero .eyebrow {
  margin-left: auto;
  margin-right: auto;
}

.page-hero__title,
.privacy-hero__title {
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.15;
  font-weight: 850;
}

.page-hero__subtitle,
.privacy-hero__subtitle {
  max-width: 680px;
  margin: 16px auto 0;
  color: var(--color-text-light);
  font-size: 16px;
}

.about-intro {
  padding: 78px 0;
  background: #fff;
}

.about-intro__grid {
  display: grid;
  grid-template-columns: 1fr 0.88fr;
  align-items: center;
  gap: 48px;
}

.about-intro__text {
  margin-top: 16px;
  color: var(--color-text-light);
  font-size: 16px;
}

.about-intro__visual {
  min-height: 360px;
}

.about-intro__image {
  aspect-ratio: 4 / 3;
}

.privacy-page {
  background: #fff;
}

.privacy-hero__meta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 22px;
  color: var(--color-muted);
  font-size: 13px;
}

.privacy-layout {
  display: grid;
  grid-template-columns: 310px 1fr;
  gap: 34px;
  align-items: start;
  padding-top: 58px;
  padding-bottom: 82px;
}

.privacy-summary {
  position: sticky;
  top: 96px;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-light);
}

.privacy-summary h2 {
  font-size: 20px;
}

.privacy-summary p {
  margin-top: 12px;
  color: var(--color-text-light);
  font-size: 14px;
}

.privacy-summary__card,
.privacy-contact > div {
  display: grid;
  gap: 4px;
  margin-top: 18px;
  padding: 16px;
  border-radius: var(--radius-sm);
  background: #fff;
  border: 1px solid var(--color-border);
}

.privacy-summary__card span,
.privacy-contact span {
  color: var(--color-muted);
  font-size: 12px;
  font-weight: 700;
}

.privacy-summary__card strong,
.privacy-contact strong {
  color: var(--color-text);
  font-size: 14px;
  overflow-wrap: anywhere;
}

.privacy-doc {
  min-width: 0;
}

.privacy-toc {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 34px;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-light);
}

.privacy-toc a {
  min-height: 38px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  color: var(--color-text-light);
  background: #fff;
  font-size: 13px;
  font-weight: 700;
}

.privacy-toc a:hover {
  color: var(--color-primary);
}

.privacy-section {
  scroll-margin-top: 96px;
  padding: 30px 0;
  border-bottom: 1px solid var(--color-border);
}

.privacy-section:first-of-type {
  padding-top: 0;
}

.privacy-section h2 {
  margin-bottom: 14px;
  color: var(--color-primary-dark);
  font-size: 22px;
}

.privacy-section p,
.privacy-section li {
  color: var(--color-text-light);
  font-size: 15px;
}

.privacy-section p + p {
  margin-top: 12px;
}

.privacy-section ul {
  display: grid;
  gap: 8px;
  margin-top: 12px;
  padding-left: 20px;
  list-style: disc;
}

.privacy-contact {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 18px;
}

.privacy-note {
  margin-top: 16px;
  color: var(--color-muted) !important;
  font-size: 13px !important;
}

.site-footer {
  background: #172033;
  color: #d5dbe7;
  padding: 58px 0 24px;
}

.site-footer__main {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 44px;
  padding-bottom: 34px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.site-footer__brand-name {
  color: #fff;
  font-size: 17px;
  font-weight: 800;
}

.site-footer__brand-tagline {
  max-width: 520px;
  margin-top: 10px;
  color: #9faabc;
  font-size: 13px;
}

.site-footer__contact-title {
  margin-bottom: 12px;
  color: #fff;
  font-size: 14px;
  font-weight: 800;
}

.site-footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: #d5dbe7;
  font-size: 13px;
}

.site-footer__contact-icon {
  width: 17px;
  height: 17px;
  flex: 0 0 auto;
  margin-top: 4px;
  color: #80b4ff;
}

.site-footer__risk {
  margin-top: 22px;
  padding: 18px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: #9faabc;
  font-size: 12px;
}

.site-footer__risk strong {
  color: #e8c36d;
}

.site-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: #9faabc;
  font-size: 12px;
}

.site-footer__links {
  display: flex;
  gap: 16px;
  white-space: nowrap;
}

.site-footer__links a:hover {
  color: #fff;
}

@media (max-width: 980px) {
  .hero__grid,
  .cta-banner__grid,
  .about-intro__grid,
  .privacy-layout {
    grid-template-columns: 1fr;
  }

  .hero__grid {
    min-height: auto;
    gap: 38px;
  }

  .features__grid,
  .about-features__grid,
  .info-strip__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .privacy-summary {
    position: static;
  }

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

@media (max-width: 640px) {
  .container {
    width: min(100% - 32px, var(--container-width));
  }

  .site-header__inner {
    min-height: auto;
    padding: 12px 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
  }

  .site-nav__link {
    min-height: 34px;
    padding: 0 10px;
    font-size: 13px;
  }

  .hero__grid {
    padding: 50px 0 58px;
  }

  .hero__title {
    font-size: 36px;
  }

  .hero__subtitle,
  .cta-banner__text,
  .about-intro__text {
    font-size: 15px;
  }

  .hero__actions,
  .button {
    width: 100%;
  }

  .features__grid,
  .about-features__grid,
  .info-strip__grid,
  .privacy-toc,
  .privacy-contact {
    grid-template-columns: 1fr;
  }

  .features,
  .about-features,
  .cta-banner,
  .about-intro {
    padding: 54px 0;
  }

  .page-hero,
  .privacy-hero {
    padding: 52px 0 44px;
  }

  .feature-card,
  .info-strip__item {
    min-height: auto;
  }

  .privacy-layout {
    padding-top: 38px;
    padding-bottom: 58px;
  }

  .site-footer__bottom {
    align-items: flex-start;
    flex-direction: column;
  }
}