:root {
  color-scheme: light;
  --paper: #fbfaf7;
  --paper-strong: #ffffff;
  --ink: #1d2425;
  --muted: #5f6f70;
  --line: #dce4df;
  --teal: #0f8c7f;
  --teal-dark: #09675f;
  --coral: #e36f5a;
  --sun: #f3b548;
  --leaf: #8cab4f;
  --shadow: 0 18px 60px rgba(29, 36, 37, 0.14);
  --radius: 8px;
  --header-height: 74px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

[id] {
  scroll-margin-top: calc(var(--header-height) + 20px);
}

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

body.nav-open {
  overflow: hidden;
}

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

img,
svg {
  max-width: 100%;
}

.site-header {
  align-items: center;
  backdrop-filter: blur(18px);
  background: rgba(251, 250, 247, 0.86);
  border-bottom: 1px solid rgba(220, 228, 223, 0.82);
  display: flex;
  height: var(--header-height);
  justify-content: space-between;
  left: 0;
  padding: 0 clamp(20px, 5vw, 72px);
  position: fixed;
  right: 0;
  top: 0;
  z-index: 20;
}

.brand {
  align-items: center;
  display: inline-flex;
  font-weight: 800;
  gap: 10px;
  letter-spacing: 0;
}

.brand-mark {
  align-items: center;
  background: linear-gradient(135deg, var(--teal), var(--leaf));
  border-radius: 8px;
  color: white;
  display: inline-flex;
  font-size: 0.95rem;
  height: 34px;
  justify-content: center;
  width: 34px;
}

.site-nav {
  align-items: center;
  display: flex;
  gap: clamp(18px, 3vw, 34px);
  font-size: 0.95rem;
  font-weight: 700;
}

.site-nav a {
  color: #263132;
  position: relative;
}

.site-nav a::after {
  background: var(--coral);
  bottom: -8px;
  content: "";
  height: 2px;
  left: 0;
  position: absolute;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
  width: 100%;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.nav-toggle {
  align-items: center;
  background: transparent;
  border: 0;
  display: none;
  height: 44px;
  justify-content: center;
  padding: 0;
  width: 44px;
}

.nav-toggle span {
  background: var(--ink);
  border-radius: 999px;
  display: block;
  height: 2px;
  position: absolute;
  transition:
    transform 180ms ease,
    opacity 180ms ease;
  width: 23px;
}

.nav-toggle span:first-child {
  transform: translateY(-5px);
}

.nav-toggle span:last-child {
  transform: translateY(5px);
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: rotate(-45deg);
}

.hero {
  align-items: center;
  display: grid;
  min-height: clamp(560px, 78svh, 760px);
  overflow: hidden;
  padding: calc(var(--header-height) + 52px) clamp(20px, 6vw, 92px) 56px;
  position: relative;
}

.hero-media,
.hero-shade {
  inset: 0;
  position: absolute;
}

.hero-media {
  background:
    linear-gradient(90deg, rgba(7, 24, 25, 0.76) 0%, rgba(7, 24, 25, 0.48) 42%, rgba(7, 24, 25, 0.08) 100%),
    url("assets/hero-cloud-launch.png") center / cover no-repeat;
  transform: scale(1.01);
}

.hero-shade {
  background:
    radial-gradient(circle at 14% 26%, rgba(15, 140, 127, 0.34), transparent 30%),
    linear-gradient(0deg, rgba(7, 24, 25, 0.18), transparent 45%);
}

.hero-content {
  color: white;
  max-width: 780px;
  position: relative;
  text-shadow: 0 2px 26px rgba(0, 0, 0, 0.34);
  z-index: 2;
}

.eyebrow {
  color: var(--teal-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  margin: 0 0 12px;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #9ff0df;
}

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

h1 {
  font-size: clamp(2.55rem, 7vw, 5.9rem);
  letter-spacing: 0;
  line-height: 0.98;
  margin-bottom: 24px;
  max-width: 850px;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.55rem);
  letter-spacing: 0;
  line-height: 1.08;
  margin-bottom: 18px;
}

h3 {
  font-size: 1.28rem;
  line-height: 1.24;
  margin-bottom: 14px;
}

.hero-copy {
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(1rem, 1.7vw, 1.22rem);
  margin-bottom: 34px;
  max-width: 680px;
}

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

.button {
  align-items: center;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-weight: 800;
  justify-content: center;
  min-height: 48px;
  min-width: 136px;
  padding: 12px 20px;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease;
}

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

.button-primary {
  background: var(--teal);
  box-shadow: 0 14px 34px rgba(15, 140, 127, 0.24);
  color: white;
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--teal-dark);
}

.button-ghost {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.45);
  color: white;
}

.metrics {
  background: var(--paper-strong);
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.metric {
  background: var(--paper-strong);
  min-height: 126px;
  padding: 28px clamp(20px, 5vw, 72px);
}

.metric strong {
  color: var(--teal-dark);
  display: block;
  font-size: clamp(1.9rem, 4vw, 3rem);
  line-height: 1;
  margin-bottom: 10px;
}

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

.section {
  padding: clamp(72px, 10vw, 132px) clamp(20px, 6vw, 92px);
}

.section-heading {
  margin-bottom: 34px;
  max-width: 760px;
}

.section-heading p:not(.eyebrow),
.proof-copy p:not(.eyebrow),
.contact-copy p:not(.eyebrow) {
  color: var(--muted);
  font-size: 1.05rem;
}

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

.service-card {
  background: var(--paper-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  min-height: 255px;
  padding: 28px;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease;
}

.service-card:hover {
  border-color: rgba(15, 140, 127, 0.34);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.card-index {
  color: var(--coral);
  font-weight: 900;
  margin-bottom: 54px;
}

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

.band {
  background:
    linear-gradient(135deg, rgba(15, 140, 127, 0.1), rgba(243, 181, 72, 0.16)),
    #eef4ef;
  border-block: 1px solid var(--line);
  padding: clamp(70px, 9vw, 118px) clamp(20px, 6vw, 92px);
}

.band-inner {
  align-items: start;
  display: grid;
  gap: clamp(34px, 6vw, 76px);
  grid-template-columns: minmax(0, 0.86fr) minmax(320px, 1fr);
}

.proof-copy {
  max-width: 620px;
}

.proof-panel {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(220, 228, 223, 0.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: grid;
}

.route-step {
  align-items: center;
  display: grid;
  gap: 18px;
  grid-template-columns: 42px 1fr;
  min-height: 86px;
  padding: 20px 24px;
}

.route-step + .route-step {
  border-top: 1px solid var(--line);
}

.route-step span {
  align-items: center;
  background: var(--ink);
  border-radius: 8px;
  color: white;
  display: inline-flex;
  font-weight: 900;
  height: 42px;
  justify-content: center;
  width: 42px;
}

.route-step:nth-child(2) span {
  background: var(--teal);
}

.route-step:nth-child(3) span {
  background: var(--coral);
}

.route-step:nth-child(4) span {
  background: var(--leaf);
}

.route-step p {
  font-weight: 800;
  margin: 0;
}

.launch-section {
  background: var(--paper);
}

.launch-layout {
  align-items: start;
  display: grid;
  gap: 22px;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 340px);
}

.checklist {
  display: grid;
  gap: 12px;
}

.checklist label {
  align-items: center;
  background: var(--paper-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  display: flex;
  gap: 14px;
  min-height: 68px;
  padding: 16px 18px;
}

.checklist input {
  accent-color: var(--teal);
  height: 20px;
  width: 20px;
}

.checklist span {
  font-weight: 800;
}

.status-card {
  background: var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  color: white;
  padding: 28px;
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.status-label {
  color: #9ff0df;
  display: block;
  font-weight: 800;
  margin-bottom: 12px;
}

.status-card strong {
  display: block;
  font-size: clamp(3rem, 8vw, 5rem);
  line-height: 0.95;
  margin-bottom: 18px;
}

.status-card p {
  color: rgba(255, 255, 255, 0.78);
  margin-bottom: 0;
}

.contact-section {
  background: #ffffff;
  border-top: 1px solid var(--line);
  display: grid;
  gap: clamp(34px, 6vw, 78px);
  grid-template-columns: minmax(0, 0.82fr) minmax(320px, 1fr);
  padding: clamp(72px, 10vw, 132px) clamp(20px, 6vw, 92px);
}

.contact-copy {
  max-width: 570px;
}

.contact-form {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding: clamp(22px, 4vw, 34px);
}

.contact-form label {
  display: grid;
  gap: 8px;
}

.contact-form label.full {
  grid-column: 1 / -1;
}

.contact-form span {
  color: #334143;
  font-size: 0.92rem;
  font-weight: 800;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  font: inherit;
  min-height: 48px;
  padding: 12px 14px;
  width: 100%;
}

.contact-form textarea {
  min-height: 132px;
  resize: vertical;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 4px rgba(15, 140, 127, 0.12);
  outline: 0;
}

.contact-form .button {
  align-self: end;
  border: 0;
}

.form-note {
  align-self: center;
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0;
}

.site-footer {
  align-items: center;
  background: var(--ink);
  color: rgba(255, 255, 255, 0.78);
  display: flex;
  justify-content: space-between;
  min-height: 92px;
  padding: 26px clamp(20px, 6vw, 92px);
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: white;
  font-weight: 800;
}

@media (max-width: 900px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    background: rgba(251, 250, 247, 0.98);
    border-bottom: 1px solid var(--line);
    display: grid;
    gap: 0;
    left: 0;
    opacity: 0;
    padding: 10px 20px 20px;
    pointer-events: none;
    position: fixed;
    right: 0;
    top: var(--header-height);
    transform: translateY(-10px);
    transition:
      opacity 180ms ease,
      transform 180ms ease;
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav a {
    border-bottom: 1px solid var(--line);
    padding: 16px 0;
  }

  .site-nav a::after {
    display: none;
  }

  .metrics,
  .service-grid,
  .band-inner,
  .launch-layout,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .status-card {
    position: static;
  }
}

@media (max-width: 640px) {
  :root {
    --header-height: 66px;
  }

  .site-header {
    padding-inline: 16px;
  }

  .brand {
    font-size: 0.98rem;
  }

  .hero {
    min-height: 590px;
    padding: calc(var(--header-height) + 42px) 18px 44px;
  }

  .hero-media {
    background:
      linear-gradient(90deg, rgba(7, 24, 25, 0.82) 0%, rgba(7, 24, 25, 0.62) 68%, rgba(7, 24, 25, 0.32) 100%),
      url("assets/hero-cloud-launch.png") 62% center / cover no-repeat;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .metric {
    min-height: 104px;
  }

  .section,
  .band,
  .contact-section {
    padding-inline: 18px;
  }

  .service-card,
  .proof-panel,
  .status-card,
  .contact-form {
    box-shadow: none;
  }

  .contact-form {
    grid-template-columns: 1fr;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}