:root {
  --ink: #172022;
  --muted: #5d6b70;
  --paper: #f7f8f5;
  --surface: #ffffff;
  --line: #dde4df;
  --teal: #0f766e;
  --teal-dark: #0b4f4a;
  --amber: #d88a1d;
  --red: #b33a2f;
  --steel: #31434a;
  --shadow: 0 20px 60px rgba(23, 32, 34, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 clamp(18px, 4vw, 58px);
  color: #fff;
  background: rgba(13, 24, 27, 0.34);
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(16px);
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 10px 30px rgba(23, 32, 34, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 220px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: #fff;
  font-weight: 800;
  background: linear-gradient(135deg, var(--teal), var(--red));
  border-radius: 6px;
}

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

.brand strong {
  font-size: 16px;
  line-height: 1.2;
}

.brand small {
  margin-top: 2px;
  color: currentColor;
  font-size: 12px;
  opacity: 0.78;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  color: currentColor;
  font-size: 14px;
}

.desktop-nav a {
  opacity: 0.82;
}

.desktop-nav a:hover {
  opacity: 1;
}

.nav-cta,
.primary-button,
.secondary-button,
.lead-form button,
.site-footer a,
.mobile-sticky a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 6px;
  font-weight: 700;
  white-space: nowrap;
}

.nav-cta {
  color: #fff;
  background: var(--teal);
}

.hero {
  position: relative;
  min-height: 96vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
}

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

.hero-media {
  z-index: -2;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-shade {
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(8, 18, 20, 0.9) 0%, rgba(8, 18, 20, 0.72) 36%, rgba(8, 18, 20, 0.16) 72%),
    linear-gradient(180deg, rgba(8, 18, 20, 0.12) 58%, rgba(8, 18, 20, 0.55) 100%);
}

.hero-content {
  width: min(680px, calc(100% - 36px));
  margin-left: clamp(18px, 7vw, 112px);
  padding-top: 82px;
  color: #fff;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--amber);
  font-size: 14px;
  font-weight: 800;
}

.hero h1 {
  margin: 0;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 1.02;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 640px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(17px, 2vw, 22px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.primary-button {
  color: #fff;
  background: var(--teal);
  box-shadow: 0 12px 32px rgba(15, 118, 110, 0.28);
}

.secondary-button {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.38);
  background: rgba(255, 255, 255, 0.08);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  width: min(620px, 100%);
  margin: 42px 0 0;
}

.hero-metrics div {
  min-height: 92px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(14px);
  border-radius: 8px;
}

.hero-metrics dt {
  font-size: 24px;
  font-weight: 800;
}

.hero-metrics dd {
  margin: 4px 0 0;
  color: rgba(255, 255, 255, 0.74);
  font-size: 13px;
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  max-width: 1180px;
  margin: -54px auto 0;
  padding: 0 clamp(18px, 3vw, 24px);
  position: relative;
  z-index: 2;
}

.trust-strip div {
  min-height: 112px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: 0 18px 50px rgba(23, 32, 34, 0.1);
}

.trust-strip div:first-child {
  border-radius: 8px 0 0 8px;
}

.trust-strip div:last-child {
  border-radius: 0 8px 8px 0;
}

.trust-strip strong {
  display: block;
  color: var(--teal-dark);
  font-size: 30px;
  line-height: 1.1;
}

.trust-strip span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 96px clamp(18px, 3vw, 24px);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 36px;
}

.section-heading.compact {
  max-width: 680px;
}

.section-heading h2,
.outcome-copy h2,
.contact-copy h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.16;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow),
.contact-copy p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 17px;
}

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

.feature-grid article {
  min-height: 270px;
  padding: 26px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 34px rgba(23, 32, 34, 0.06);
}

.feature-index {
  color: var(--red);
  font-weight: 800;
}

.feature-grid h3,
.timeline h3,
.proof-main h3,
.source-panel h3 {
  margin: 16px 0 10px;
  font-size: 21px;
  line-height: 1.28;
}

.feature-grid p,
.timeline p,
.proof-main p,
.source-panel li,
.faq p {
  margin: 0;
  color: var(--muted);
}

.outcome-band {
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 44px;
  align-items: center;
  padding-inline: max(24px, calc((100vw - 1180px) / 2 + 24px));
  color: #fff;
  background: #203135;
}

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

.outcome-list div {
  min-height: 112px;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.outcome-list strong,
.outcome-list span {
  display: block;
}

.outcome-list strong {
  font-size: 20px;
}

.outcome-list span {
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.68);
}

.proof-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: 18px;
}

.proof-main,
.source-panel {
  padding: 30px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.salary-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 16px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.salary-row span {
  color: var(--muted);
}

.salary-row strong {
  color: var(--teal-dark);
  font-size: clamp(20px, 3vw, 28px);
}

.note {
  margin-top: 18px !important;
  font-size: 13px;
}

.source-panel ul {
  margin: 12px 0 0;
  padding-left: 18px;
}

.source-panel li + li {
  margin-top: 10px;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.timeline article {
  min-height: 240px;
  padding: 28px;
  background: var(--surface);
}

.timeline span {
  color: var(--red);
  font-weight: 800;
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.audience-grid div {
  display: flex;
  align-items: center;
  min-height: 86px;
  padding: 20px;
  color: #fff;
  font-weight: 800;
  background: var(--steel);
  border-left: 5px solid var(--amber);
  border-radius: 8px;
}

.contact-section {
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(340px, 0.7fr);
  gap: clamp(24px, 5vw, 64px);
  align-items: start;
  padding-inline: max(24px, calc((100vw - 1180px) / 2 + 24px));
  background: #e9eee9;
}

.contact-copy {
  max-width: 680px;
}

.contact-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.contact-badges span {
  padding: 8px 12px;
  color: var(--teal-dark);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
}

.lead-form {
  display: grid;
  gap: 15px;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.lead-form label {
  display: grid;
  gap: 8px;
  color: var(--steel);
  font-size: 14px;
  font-weight: 700;
}

.lead-form input,
.lead-form select {
  width: 100%;
  height: 48px;
  padding: 0 13px;
  color: var(--ink);
  background: #fbfcfa;
  border: 1px solid #cdd7d0;
  border-radius: 6px;
  font: inherit;
}

.lead-form input:focus,
.lead-form select:focus {
  outline: 3px solid rgba(15, 118, 110, 0.16);
  border-color: var(--teal);
}

.lead-form button {
  width: 100%;
  height: 50px;
  color: #fff;
  background: var(--teal);
  border: 0;
  cursor: pointer;
  font-size: 16px;
}

.form-tip {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.faq details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.faq details + details {
  margin-top: 12px;
}

.faq summary {
  min-height: 62px;
  display: flex;
  align-items: center;
  padding: 0 22px;
  cursor: pointer;
  font-weight: 800;
}

.faq p {
  padding: 0 22px 20px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 42px max(24px, calc((100vw - 1180px) / 2 + 24px));
  color: #fff;
  background: #11191b;
}

.site-footer p {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.64);
}

.site-footer a {
  align-self: center;
  color: #fff;
  background: var(--red);
}

.mobile-sticky {
  display: none;
}

@media (max-width: 980px) {
  .desktop-nav {
    display: none;
  }

  .brand {
    min-width: auto;
  }

  .hero {
    min-height: 92vh;
  }

  .hero-content {
    margin-inline: 20px;
  }

  .hero-shade {
    background:
      linear-gradient(90deg, rgba(8, 18, 20, 0.94) 0%, rgba(8, 18, 20, 0.64) 64%, rgba(8, 18, 20, 0.34) 100%),
      linear-gradient(180deg, rgba(8, 18, 20, 0.06) 48%, rgba(8, 18, 20, 0.7) 100%);
  }

  .trust-strip,
  .feature-grid,
  .timeline,
  .audience-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .trust-strip {
    margin-top: 0;
  }

  .trust-strip div:first-child,
  .trust-strip div:last-child {
    border-radius: 0;
  }

  .outcome-band,
  .proof-layout,
  .contact-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  body {
    padding-bottom: 68px;
  }

  .site-header {
    height: 64px;
    padding-inline: 14px;
  }

  .brand small {
    display: none;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .nav-cta {
    min-height: 38px;
    padding: 0 13px;
    font-size: 13px;
  }

  .hero {
    min-height: 88vh;
  }

  .hero-media img {
    object-position: 62% center;
  }

  .hero-content {
    width: calc(100% - 32px);
    margin-inline: 16px;
  }

  .hero h1 {
    font-size: 42px;
  }

  .hero-lead {
    font-size: 16px;
  }

  .hero-actions {
    display: grid;
  }

  .hero-metrics,
  .trust-strip,
  .feature-grid,
  .timeline,
  .audience-grid,
  .outcome-list {
    grid-template-columns: 1fr;
  }

  .hero-metrics {
    gap: 8px;
    margin-top: 28px;
  }

  .hero-metrics div {
    min-height: 76px;
    padding: 14px;
  }

  .hero-metrics dt {
    font-size: 21px;
  }

  .trust-strip {
    padding: 0;
  }

  .trust-strip div {
    min-height: 92px;
    box-shadow: none;
  }

  .section,
  .outcome-band,
  .contact-section {
    padding: 62px 16px;
  }

  .feature-grid article,
  .timeline article {
    min-height: auto;
  }

  .salary-row {
    display: grid;
    gap: 6px;
  }

  .lead-form {
    padding: 20px;
  }

  .site-footer {
    display: block;
    padding: 34px 16px 92px;
  }

  .site-footer a {
    width: 100%;
    margin-top: 20px;
  }

  .mobile-sticky {
    position: fixed;
    inset: auto 0 0;
    z-index: 30;
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 8px;
    padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
    background: rgba(255, 255, 255, 0.94);
    border-top: 1px solid var(--line);
    backdrop-filter: blur(14px);
  }

  .mobile-sticky a {
    min-height: 44px;
    color: #fff;
    background: var(--teal);
  }

  .mobile-sticky a:last-child {
    color: var(--ink);
    background: #e8ece8;
  }
}