:root {
  color-scheme: light;
  --ink: #17202a;
  --muted: #64707d;
  --line: #dfe7e5;
  --paper: #fffaf4;
  --soft: #f4fbf8;
  --coral: #ff5a3d;
  --coral-dark: #d83d25;
  --teal: #087d7a;
  --mint: #dff4ec;
  --gold: #f8b84e;
  --white: #ffffff;
  --shadow: 0 22px 60px rgba(23, 32, 42, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
  padding: 14px clamp(20px, 5vw, 72px);
  background: rgba(255, 250, 244, 0.88);
  border-bottom: 1px solid rgba(223, 231, 229, 0.8);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 190px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: var(--coral);
  color: var(--white);
  font-weight: 800;
  box-shadow: 0 10px 24px rgba(255, 90, 61, 0.32);
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.25;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: #33404c;
  font-size: 15px;
  font-weight: 500;
}

.desktop-nav a {
  padding: 8px 0;
}

.header-cta,
.primary-button,
.secondary-button,
.contact-form button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border-radius: 8px;
  font-weight: 700;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease;
}

.header-cta {
  padding: 0 18px;
  background: var(--teal);
  color: var(--white);
}

.hero {
  position: relative;
  min-height: 92vh;
  overflow: hidden;
  background: #111c1d;
}

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

.hero-image {
  object-fit: cover;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(13, 23, 25, 0.88) 0%, rgba(13, 23, 25, 0.7) 34%, rgba(13, 23, 25, 0.22) 72%),
    linear-gradient(0deg, rgba(13, 23, 25, 0.22), rgba(13, 23, 25, 0.16));
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 168px 0 72px;
  color: var(--white);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--coral);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #ffd77c;
}

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

h1 {
  max-width: 720px;
  margin-bottom: 22px;
  font-size: clamp(42px, 7vw, 82px);
  line-height: 1.03;
  font-weight: 800;
}

.hero-copy {
  max-width: 660px;
  margin-bottom: 34px;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 58px;
}

.primary-button,
.secondary-button {
  padding: 0 24px;
  font-size: 16px;
}

.primary-button {
  background: var(--coral);
  color: var(--white);
  box-shadow: 0 18px 36px rgba(255, 90, 61, 0.34);
}

.secondary-button {
  border: 1px solid rgba(255, 255, 255, 0.36);
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
}

.header-cta:hover,
.primary-button:hover,
.secondary-button:hover,
.contact-form button:hover {
  transform: translateY(-2px);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  width: min(720px, 100%);
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.11);
  backdrop-filter: blur(14px);
}

.hero-metrics div {
  padding: 22px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
}

.hero-metrics div:last-child {
  border-right: 0;
}

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

.hero-metrics strong {
  margin-bottom: 8px;
  color: #fff1bd;
  font-size: 30px;
  line-height: 1;
}

.hero-metrics span {
  color: rgba(255, 255, 255, 0.74);
  font-size: 14px;
}

.section {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 96px 0;
}

.intro {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 72px;
  align-items: start;
}

.section-heading h2,
.proof-copy h2,
.contact h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.18;
  font-weight: 800;
}

.intro > p,
.proof-copy p,
.contact p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.9;
}

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

.service-card {
  min-height: 246px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 12px 28px rgba(23, 32, 42, 0.05);
}

.card-index {
  display: inline-block;
  margin-bottom: 42px;
  color: var(--teal);
  font-size: 14px;
  font-weight: 800;
}

.service-card h3,
.timeline-item h3 {
  margin-bottom: 12px;
  font-size: 22px;
}

.service-card p,
.timeline-item p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.8;
}

.proof-band {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 54px;
  align-items: center;
  padding: 88px clamp(20px, 5vw, 72px);
  background: #123d3c;
  color: var(--white);
}

.proof-copy {
  max-width: 640px;
  justify-self: end;
}

.proof-copy p {
  color: rgba(255, 255, 255, 0.72);
}

.proof-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: 620px;
}

.proof-stats div {
  min-height: 168px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.proof-stats strong,
.proof-stats span {
  display: block;
}

.proof-stats strong {
  margin-bottom: 20px;
  color: #ffd77c;
  font-size: 42px;
  line-height: 1;
}

.proof-stats span {
  color: rgba(255, 255, 255, 0.76);
  line-height: 1.7;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 36px;
  background: var(--line);
  border: 1px solid var(--line);
}

.timeline-item {
  min-height: 260px;
  padding: 28px;
  background: var(--soft);
}

.timeline-item span {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 54px;
  border-radius: 50%;
  background: var(--mint);
  color: var(--teal);
  font-weight: 800;
}

.contact {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto 96px;
  padding: 58px;
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 90, 61, 0.12), rgba(8, 125, 122, 0.12)),
    var(--white);
  box-shadow: var(--shadow);
}

.contact-form {
  display: grid;
  gap: 16px;
}

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

.contact-form span {
  color: #33404c;
  font-size: 14px;
  font-weight: 700;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid #cad8d4;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  color: var(--ink);
  font: inherit;
  outline: none;
}

.contact-form input {
  height: 48px;
  padding: 0 14px;
}

.contact-form textarea {
  resize: vertical;
  min-height: 116px;
  padding: 12px 14px;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 4px rgba(8, 125, 122, 0.12);
}

.contact-form button {
  width: 100%;
  border: 0;
  background: var(--coral);
  color: var(--white);
  cursor: pointer;
  font: inherit;
}

.contact-form button:disabled {
  cursor: wait;
  opacity: 0.72;
  transform: none;
}

.contact-form small {
  color: var(--muted);
  line-height: 1.7;
}

.contact-form small[data-state="success"] {
  color: var(--teal);
  font-weight: 700;
}

.contact-form small[data-state="error"] {
  color: var(--coral-dark);
  font-weight: 700;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 30px clamp(20px, 5vw, 72px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 920px) {
  .desktop-nav {
    display: none;
  }

  .site-header {
    min-height: 68px;
  }

  .header-cta {
    min-height: 40px;
    padding: 0 14px;
    font-size: 14px;
  }

  .hero {
    min-height: auto;
  }

  .hero-shade {
    background: linear-gradient(90deg, rgba(13, 23, 25, 0.92), rgba(13, 23, 25, 0.56));
  }

  .hero-content {
    padding-top: 126px;
  }

  .intro,
  .proof-band,
  .contact {
    grid-template-columns: 1fr;
  }

  .service-grid,
  .timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .proof-copy {
    justify-self: start;
  }

  .proof-stats {
    max-width: none;
  }

  .contact {
    padding: 34px;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding-inline: 16px;
  }

  .brand {
    min-width: 0;
  }

  .brand small {
    display: none;
  }

  .hero-content,
  .section,
  .contact {
    width: calc(100% - 32px);
  }

  .hero-content {
    padding-bottom: 48px;
  }

  h1 {
    font-size: 42px;
  }

  .hero-actions {
    display: grid;
  }

  .hero-metrics,
  .service-grid,
  .proof-stats,
  .timeline {
    grid-template-columns: 1fr;
  }

  .hero-metrics div {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  }

  .hero-metrics div:last-child {
    border-bottom: 0;
  }

  .section {
    padding: 70px 0;
  }

  .proof-band {
    padding-block: 70px;
  }

  .contact {
    margin-bottom: 70px;
    padding: 26px 20px;
  }

  .site-footer {
    display: grid;
  }
}