:root {
  --ink: #17202a;
  --muted: #607080;
  --line: #e4e9ef;
  --paper: #ffffff;
  --mist: #f5f8fb;
  --night: #102033;
  --coral: #df947f;
  --coral-dark: #b56553;
  --blue: #2b66f6;
  --green: #2f9d78;
  --amber: #d99425;
  --shadow: 0 18px 48px rgba(27, 38, 54, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family:
    "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: var(--paper);
  line-height: 1.65;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 12px 6vw;
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(228, 233, 239, 0.76);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  color: #fff;
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.15;
  text-align: center;
  background: var(--coral);
  border-radius: 8px;
  box-shadow: inset 0 -10px 18px rgba(126, 61, 48, 0.16);
}

.brand-text {
  display: grid;
  line-height: 1.2;
}

.brand-text strong {
  font-size: 1.05rem;
}

.brand-text small {
  color: var(--muted);
  font-size: 0.76rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding: 0 14px;
  color: #334155;
  font-weight: 700;
  border-radius: 8px;
  transition:
    background 180ms ease,
    color 180ms ease;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--blue);
  background: #eef4ff;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: #f3f6fa;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
}

.hero {
  position: relative;
  min-height: 76vh;
  overflow: hidden;
  color: #fff;
  background: #132538;
}

#supply-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(14, 29, 47, 0.92) 0%, rgba(14, 29, 47, 0.72) 45%, rgba(14, 29, 47, 0.28) 100%),
    linear-gradient(180deg, rgba(14, 29, 47, 0) 74%, rgba(14, 29, 47, 0.22) 100%);
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) 360px;
  gap: 48px;
  align-items: center;
  max-width: 1180px;
  min-height: 76vh;
  margin: 0 auto;
  padding: 80px 24px 64px;
}

.hero-copy {
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #94f0c8;
}

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

h1 {
  margin-bottom: 20px;
  font-size: 3.25rem;
  line-height: 1.12;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: 2.15rem;
  line-height: 1.2;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.18rem;
  line-height: 1.35;
}

.hero-lede {
  max-width: 630px;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.12rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  font-weight: 800;
  border: 1px solid transparent;
  border-radius: 8px;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 12px 26px rgba(43, 102, 246, 0.24);
}

.button-primary:hover {
  background: #1e56dc;
}

.button-ghost {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.32);
}

.button-ghost:hover {
  background: rgba(255, 255, 255, 0.18);
}

.hero-facts {
  display: grid;
  gap: 12px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.16);
  backdrop-filter: blur(18px);
}

.hero-facts div {
  padding: 16px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 8px;
}

.hero-facts span,
.contact-grid span {
  display: block;
  margin-bottom: 5px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.86rem;
}

.hero-facts strong,
.contact-grid strong {
  display: block;
  font-size: 1.02rem;
  line-height: 1.45;
}

.section {
  padding: 86px 0;
}

.section-inner {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 48px;
  align-items: start;
}

.section-heading {
  max-width: 620px;
}

.section-heading.center {
  margin: 0 auto 34px;
  text-align: center;
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
  font-size: 1.03rem;
}

.profile-band {
  background: linear-gradient(180deg, #fff 0%, var(--mist) 100%);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
}

.info-grid div,
.service-card,
.process-list li {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(21, 30, 44, 0.06);
}

.info-grid div {
  min-height: 116px;
  padding: 20px;
}

dt {
  color: var(--muted);
  font-weight: 700;
}

dd {
  margin: 8px 0 0;
  font-size: 1.08rem;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.service-card {
  min-height: 236px;
  padding: 24px;
}

.service-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 32px;
  margin-bottom: 26px;
  color: #fff;
  font-weight: 900;
  background: var(--coral);
  border-radius: 8px;
}

.service-card:nth-child(2) .service-index {
  background: var(--blue);
}

.service-card:nth-child(3) .service-index {
  background: var(--green);
}

.service-card:nth-child(4) .service-index {
  background: var(--amber);
}

.service-card p,
.process-list p {
  color: var(--muted);
}

.advantage-band {
  color: #fff;
  background: var(--night);
}

.advantage-band .section-heading .eyebrow {
  color: #94f0c8;
}

.advantage-band h2 {
  color: #fff;
}

.advantage-list {
  display: grid;
  gap: 12px;
}

.advantage-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  align-items: center;
  min-height: 82px;
  padding: 20px 24px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.advantage-item strong {
  color: #fff;
  font-size: 1.15rem;
}

.advantage-item span {
  color: rgba(255, 255, 255, 0.74);
}

.process-section {
  background: #fff;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.process-list li {
  min-height: 210px;
  padding: 24px;
}

.process-list span {
  display: grid;
  width: 40px;
  height: 40px;
  margin-bottom: 22px;
  place-items: center;
  color: var(--blue);
  font-weight: 900;
  background: #edf4ff;
  border-radius: 8px;
}

.process-list strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.1rem;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(0, 1.1fr);
  min-height: 520px;
  background: #f3f7fb;
}

.contact-visual {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(120deg, rgba(16, 32, 51, 0.9), rgba(16, 32, 51, 0.72)),
    radial-gradient(circle at 22% 18%, rgba(47, 157, 120, 0.26), transparent 34%),
    #102033;
}

.route-card {
  position: absolute;
  width: 176px;
  padding: 18px;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.12);
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(14px);
}

.route-card span {
  color: #94f0c8;
  font-size: 0.86rem;
  font-weight: 800;
}

.route-card strong {
  display: block;
  margin-top: 6px;
  font-size: 1.12rem;
}

.route-card-a {
  top: 16%;
  left: 12%;
}

.route-card-b {
  top: 44%;
  right: 12%;
}

.route-card-c {
  bottom: 14%;
  left: 22%;
}

.route-line {
  position: absolute;
  top: 26%;
  left: 25%;
  width: 52%;
  height: 52%;
  border: 2px solid rgba(148, 240, 200, 0.52);
  border-left: 0;
  border-bottom: 0;
  border-radius: 0 160px 0 0;
}

.contact-content {
  align-self: center;
  width: min(620px, calc(100% - 48px));
  padding: 78px 0 78px 56px;
}

.contact-content .eyebrow {
  color: var(--green);
}

.contact-lede {
  max-width: 520px;
  color: var(--muted);
  font-size: 1.04rem;
}

.contact-grid {
  display: grid;
  gap: 12px;
  margin: 28px 0 28px;
}

.contact-grid div {
  padding: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.contact-grid span {
  color: var(--muted);
}

.contact-grid strong {
  color: var(--ink);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
  justify-content: space-between;
  padding: 28px 6vw;
  color: #738092;
  border-top: 1px solid var(--line);
}

.site-footer a {
  color: var(--blue);
  font-weight: 700;
}

@media (max-width: 980px) {
  .site-header {
    padding: 10px 24px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 1px);
    right: 24px;
    left: 24px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    justify-content: center;
  }

  .hero-inner,
  .two-column,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .hero,
  .hero-inner {
    min-height: 72vh;
  }

  h1 {
    font-size: 2.55rem;
  }

  h2 {
    font-size: 1.85rem;
  }

  .hero-facts {
    max-width: 520px;
  }

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

  .contact-visual {
    min-height: 360px;
  }

  .contact-content {
    width: min(720px, calc(100% - 48px));
    padding: 56px 0;
    margin: 0 auto;
  }
}

@media (max-width: 680px) {
  .brand-text small {
    display: none;
  }

  .brand-text strong {
    max-width: 190px;
    font-size: 0.95rem;
  }

  .hero,
  .hero-inner {
    min-height: auto;
  }

  .hero-inner {
    gap: 28px;
    padding: 62px 20px 46px;
  }

  .hero-overlay {
    background: linear-gradient(180deg, rgba(14, 29, 47, 0.96) 0%, rgba(14, 29, 47, 0.76) 100%);
  }

  h1 {
    font-size: 2.18rem;
  }

  .hero-lede {
    font-size: 1rem;
  }

  .button {
    width: 100%;
  }

  .section {
    padding: 64px 0;
  }

  .section-inner {
    width: min(1120px, calc(100% - 32px));
  }

  .info-grid,
  .service-grid,
  .process-list {
    grid-template-columns: 1fr;
  }

  .service-card,
  .process-list li {
    min-height: auto;
  }

  .advantage-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .route-card {
    width: 150px;
  }

  .route-card-a {
    left: 8%;
  }

  .route-card-b {
    right: 7%;
  }

  .route-card-c {
    left: 14%;
  }

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