:root {
  color-scheme: light;
  --ink: #101820;
  --muted: #54616c;
  --line: #dbe3e6;
  --paper: #f7faf9;
  --white: #ffffff;
  --teal: #0d9488;
  --teal-dark: #0f766e;
  --amber: #d78321;
  --graphite: #243038;
  --shadow: 0 20px 60px rgba(16, 24, 32, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 16px clamp(18px, 4vw, 56px);
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid rgba(219, 227, 230, 0.74);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.03rem;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: var(--white);
  background: var(--ink);
  border-radius: 8px;
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: clamp(14px, 3vw, 34px);
  color: var(--muted);
  font-size: 0.95rem;
  white-space: nowrap;
}

.site-nav a:hover {
  color: var(--ink);
}

.language-toggle {
  min-width: 46px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  color: var(--ink);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.hero {
  position: relative;
  min-height: 92svh;
  display: grid;
  align-items: center;
  overflow: hidden;
  padding: 112px clamp(18px, 5vw, 72px) 82px;
  background: var(--ink);
}

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

.hero-image {
  object-fit: cover;
  object-position: center;
  opacity: 0.88;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(247, 250, 249, 0.96) 0%, rgba(247, 250, 249, 0.84) 38%, rgba(247, 250, 249, 0.22) 76%),
    linear-gradient(180deg, rgba(16, 24, 32, 0.04), rgba(16, 24, 32, 0.18));
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--teal-dark);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

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

h1 {
  max-width: 860px;
  margin: 0;
  font-size: clamp(3rem, 8vw, 7.2rem);
  line-height: 0.96;
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1.04;
}

h3 {
  margin: 0 0 12px;
  font-size: 1.1rem;
}

.hero-copy {
  max-width: 660px;
  margin: 26px 0 0;
  color: #31404a;
  font-size: clamp(1.02rem, 2vw, 1.28rem);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-weight: 800;
}

.button.primary {
  color: var(--white);
  background: var(--teal-dark);
}

.button.primary:hover {
  background: var(--teal);
}

.button.secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.9);
  border-color: var(--line);
}

.signal-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border-block: 1px solid var(--line);
}

.signal-strip div {
  min-height: 126px;
  display: grid;
  align-content: center;
  padding: 24px clamp(18px, 5vw, 56px);
  background: var(--white);
}

.signal-strip strong {
  color: var(--amber);
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1;
}

.signal-strip span {
  margin-top: 8px;
  color: var(--muted);
  font-weight: 700;
}

.section,
.project-band,
.cta {
  padding: clamp(72px, 10vw, 128px) clamp(18px, 5vw, 72px);
}

.section {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.2fr);
  gap: clamp(32px, 7vw, 96px);
  align-items: start;
}

.intro > p,
.project-band p,
.cta p {
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.8;
}

.section-lead {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.8;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.service-card {
  min-height: 220px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 10px 30px rgba(16, 24, 32, 0.05);
}

.featured-card {
  border-color: rgba(15, 118, 110, 0.34);
  background:
    linear-gradient(135deg, rgba(13, 148, 136, 0.12), rgba(215, 131, 33, 0.08)),
    var(--white);
}

.service-index {
  display: block;
  margin-bottom: 34px;
  color: var(--amber);
  font-weight: 900;
}

.service-card p,
.method-list p,
.case-card p,
.faq-list p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.case-card {
  min-height: 190px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.case-card span {
  display: inline-block;
  margin-bottom: 28px;
  color: var(--teal-dark);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.case-card a {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.phone-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.76fr);
  gap: clamp(30px, 7vw, 86px);
  align-items: center;
  padding: clamp(72px, 10vw, 128px) clamp(18px, 5vw, 72px);
  background: #eef5f3;
  border-block: 1px solid var(--line);
}

.phone-copy > p {
  max-width: 780px;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.8;
}

.phone-points {
  display: grid;
  gap: 12px;
  margin-top: 30px;
}

.phone-points div {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  border-left: 4px solid var(--teal-dark);
  background: rgba(255, 255, 255, 0.78);
}

.phone-points strong {
  font-size: 1rem;
}

.phone-points span {
  color: var(--muted);
  line-height: 1.6;
}

.call-panel {
  display: grid;
  gap: 22px;
  padding: clamp(24px, 4vw, 36px);
  color: var(--white);
  background:
    radial-gradient(circle at top right, rgba(215, 131, 33, 0.28), transparent 36%),
    #101820;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.call-status {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  color: #d9f6f1;
  background: rgba(255, 255, 255, 0.08);
  font-weight: 800;
}

.pulse {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #22c55e;
  box-shadow: 0 0 0 8px rgba(34, 197, 94, 0.16);
}

.call-number {
  font-size: clamp(2.1rem, 5vw, 4.6rem);
  line-height: 0.98;
  font-weight: 900;
  letter-spacing: 0;
}

.call-flow {
  display: grid;
  gap: 10px;
}

.call-flow div {
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.07);
  color: #d6e1e5;
}

.project-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.78fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
  color: var(--white);
  background: var(--graphite);
}

.project-band .eyebrow {
  color: #71d1c8;
}

.project-band p {
  color: #c6d2d7;
}

.terminal-panel {
  display: grid;
  gap: 22px;
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: #0f171c;
  box-shadow: var(--shadow);
}

.terminal-dots {
  display: flex;
  gap: 7px;
}

.terminal-dots span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--amber);
}

.terminal-dots span:nth-child(2) {
  background: var(--teal);
}

.terminal-dots span:nth-child(3) {
  background: #9aa9af;
}

code {
  color: #d9f6f1;
  font-size: 0.95rem;
  line-height: 1.7;
  white-space: pre-wrap;
}

.method-list {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.method-list div {
  display: grid;
  grid-template-columns: 86px 1fr;
  align-items: center;
  gap: 18px;
  min-height: 92px;
  padding: 20px 24px;
  background: var(--white);
}

.method-list span {
  color: var(--teal-dark);
  font-size: 1.8rem;
  font-weight: 900;
}

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

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 8px 24px rgba(16, 24, 32, 0.04);
}

.faq-list summary {
  cursor: pointer;
  padding: 20px 22px;
  font-weight: 900;
}

.faq-list p {
  padding: 0 22px 22px;
}

.cta {
  text-align: center;
  background: var(--white);
}

.cta h2,
.cta p {
  max-width: 760px;
  margin-inline: auto;
}

.cta p {
  margin-top: 18px;
}

.cta .hero-actions {
  justify-content: center;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(18px, 5vw, 72px);
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: var(--paper);
}

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .site-nav {
    grid-column: 1 / -1;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero {
    min-height: 88svh;
    padding-top: 150px;
  }

  .section,
  .project-band,
  .phone-band {
    grid-template-columns: 1fr;
  }

  .signal-strip,
  .service-grid,
  .case-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .hero-overlay {
    background: linear-gradient(180deg, rgba(247, 250, 249, 0.95), rgba(247, 250, 249, 0.7));
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .method-list div {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .site-footer {
    flex-direction: column;
  }
}