:root {
  color-scheme: light;
  --ink: #172126;
  --muted: #65737a;
  --line: #d9e1df;
  --paper: #fbfcfa;
  --mist: #eef6f5;
  --teal: #0f766e;
  --teal-dark: #0d4f4a;
  --coral: #d86848;
  --leaf: #4d7c55;
  --shadow: 0 18px 55px rgba(20, 42, 46, 0.14);
  font-family:
    "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC",
    Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.7;
}

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  right: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px clamp(18px, 4vw, 56px);
  color: #fff;
  background: linear-gradient(180deg, rgba(13, 31, 36, 0.72), rgba(13, 31, 36, 0));
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 17px;
  line-height: 1.2;
}

.brand small {
  margin-top: 2px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 34px);
  color: rgba(255, 255, 255, 0.9);
  font-size: 15px;
}

.nav-links a {
  padding: 6px 0;
}

.nav-links a:hover,
.site-footer a:hover {
  color: #b9f2e8;
}

.hero {
  position: relative;
  display: grid;
  min-height: 92vh;
  overflow: hidden;
  isolation: isolate;
}

.hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 82px;
  background: var(--paper);
  clip-path: polygon(0 45%, 100% 0, 100% 100%, 0 100%);
  content: "";
}

.hero-image,
.hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  z-index: -2;
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(10, 28, 34, 0.76) 0%, rgba(10, 28, 34, 0.52) 42%, rgba(10, 28, 34, 0.16) 100%),
    linear-gradient(180deg, rgba(10, 28, 34, 0.24), rgba(10, 28, 34, 0.32));
}

.hero-content {
  width: min(720px, calc(100% - 36px));
  margin: auto 0 auto clamp(18px, 8vw, 112px);
  padding-top: 72px;
  color: #fff;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--coral);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #8df0db;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.16;
}

h1 {
  max-width: 11em;
  font-size: clamp(46px, 8vw, 96px);
  font-weight: 900;
}

h2 {
  font-size: clamp(28px, 4vw, 46px);
}

h3 {
  font-size: 21px;
}

.hero-copy {
  max-width: 620px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(17px, 2vw, 21px);
}

.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 22px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 8px;
  font-weight: 700;
}

.button.primary {
  border-color: #f9faf6;
  color: var(--teal-dark);
  background: #f9faf6;
}

.button.ghost {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.section {
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto;
  padding: 86px 0;
}

.section-heading {
  max-width: 760px;
}

.section-heading p {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.section-heading .section-intro {
  display: inline-block;
  width: fit-content;
  max-width: 100%;
}

.section-heading.compact {
  max-width: none;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}

.feature-card {
  min-height: 245px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 10px 30px rgba(23, 33, 38, 0.06);
}

.feature-icon {
  display: inline-flex;
  margin-bottom: 28px;
  color: var(--teal);
  font-size: 14px;
  font-weight: 900;
}

.feature-card p {
  margin: 16px 0 0;
  color: var(--muted);
}

.link-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.link-list a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 3px 10px;
  border: 1px solid #c8dad7;
  border-radius: 6px;
  color: var(--teal-dark);
  background: #f4fbfa;
  font-size: 14px;
  font-weight: 700;
}

.link-list a:hover {
  border-color: var(--teal);
  color: #fff;
  background: var(--teal);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(28px, 7vw, 88px);
  align-items: start;
  border-top: 1px solid var(--line);
}

.text-panel {
  padding: 30px;
  border-left: 4px solid var(--leaf);
  background: var(--mist);
}

.text-panel p {
  margin: 0;
  color: #334247;
}

.text-panel p + p {
  margin-top: 14px;
}

.info-band {
  width: 100%;
  max-width: none;
  padding-right: max(18px, calc((100vw - 1120px) / 2));
  padding-left: max(18px, calc((100vw - 1120px) / 2));
  background: #143237;
  color: #fff;
}

.info-band .section-heading p,
.info-band .eyebrow {
  color: #91e7d8;
}

.info-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 34px 0 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.16);
}

.info-list div {
  min-height: 136px;
  padding: 22px;
  background: rgba(255, 255, 255, 0.07);
}

.info-list dt {
  margin-bottom: 12px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 14px;
}

.info-list dd {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  min-height: 76px;
  padding: 18px;
  color: rgba(255, 255, 255, 0.78);
  background: #0d2226;
  font-size: 14px;
  text-align: center;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: #dcfff7;
}

@media (max-width: 900px) {
  .feature-grid,
  .split,
  .info-list {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .site-header {
    position: absolute;
    align-items: flex-start;
    min-height: auto;
  }

  .nav-links {
    gap: 13px;
    font-size: 14px;
  }

  .brand small {
    display: none;
  }

  .hero {
    min-height: 760px;
  }

  .hero-content {
    width: calc(100% - 36px);
    margin: auto 18px;
  }

  .hero-actions {
    width: 100%;
  }

  .button {
    flex: 1 1 150px;
  }

  .section {
    padding: 62px 0;
  }

  .text-panel {
    padding: 24px;
  }

  .site-footer {
    flex-direction: column;
    gap: 8px;
  }
}