:root {
  --ink: #163042;
  --deep: #0d2432;
  --muted: #5e7280;
  --line: #dbe7ed;
  --paper: #ffffff;
  --soft: #f6fafb;
  --blue: #1f6f9f;
  --teal: #0f9a8a;
  --mint: #dff4ef;
  --gold: #e7ae3d;
  --coral: #d96f51;
  --aqua: #e9f8f5;
  --shadow: 0 22px 60px rgba(13, 36, 50, 0.13);
  --soft-shadow: 0 14px 34px rgba(13, 36, 50, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(31, 111, 159, 0.035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(15, 154, 138, 0.035) 1px, transparent 1px),
    #ffffff;
  background-size: 44px 44px;
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.7;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px clamp(18px, 5vw, 72px);
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid rgba(219, 231, 237, 0.78);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--deep);
  font-weight: 850;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  width: auto;
  min-width: 86px;
  height: 38px;
  padding: 0 10px;
  place-items: center;
  color: #ffffff;
  background: linear-gradient(135deg, var(--blue), var(--teal));
  border-radius: 8px;
  box-shadow: 0 10px 24px rgba(31, 111, 159, 0.24);
  font-size: 14px;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 15px;
}

.nav-links a {
  transition: color 180ms ease, background 180ms ease, transform 180ms ease;
}

.nav-links a:hover {
  color: var(--blue);
}

.nav-cta {
  padding: 9px 16px;
  color: #ffffff !important;
  background: var(--deep);
  border-radius: 8px;
  box-shadow: 0 10px 24px rgba(13, 36, 50, 0.18);
}

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

main {
  overflow: hidden;
}

section {
  padding: 88px clamp(18px, 5vw, 72px);
}

.section-band {
  background:
    linear-gradient(125deg, rgba(233, 248, 245, 0.94), rgba(255, 255, 255, 0.78) 46%, rgba(246, 250, 251, 0.92)),
    linear-gradient(90deg, rgba(31, 111, 159, 0.06) 0, rgba(31, 111, 159, 0) 36%);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(300px, 410px);
  align-items: center;
  gap: clamp(38px, 6vw, 84px);
  min-height: calc(100vh - 72px);
  padding-top: 64px;
  padding-bottom: 72px;
}

.hero::after {
  position: absolute;
  right: clamp(18px, 5vw, 72px);
  bottom: 30px;
  left: clamp(18px, 5vw, 72px);
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(15, 154, 138, 0.34), rgba(231, 174, 61, 0.32), transparent);
}

.hero-copy {
  max-width: 820px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--teal);
  font-size: 14px;
  font-weight: 850;
  letter-spacing: 0;
}

.section-kicker {
  display: inline-grid;
  width: 38px;
  height: 28px;
  margin-bottom: 14px;
  place-items: center;
  color: var(--deep);
  background: var(--aqua);
  border: 1px solid rgba(15, 154, 138, 0.16);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 900;
}

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

h1 {
  max-width: 820px;
  margin-bottom: 22px;
  color: var(--deep);
  font-size: clamp(40px, 5.4vw, 68px);
  line-height: 1.08;
  letter-spacing: 0;
}

h1 span {
  color: var(--blue);
}

h2 {
  margin-bottom: 18px;
  color: var(--deep);
  font-size: clamp(28px, 3.8vw, 44px);
  line-height: 1.2;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  color: var(--deep);
  font-size: 21px;
  line-height: 1.35;
  letter-spacing: 0;
}

.hero-lede {
  max-width: 730px;
  margin-bottom: 16px;
  color: var(--blue);
  font-size: clamp(21px, 2.6vw, 31px);
  font-weight: 850;
  line-height: 1.36;
}

.hero-text,
.section-heading p,
.score-band p,
.final-copy p {
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 34px 0 26px;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 850;
  transition: box-shadow 180ms ease, transform 180ms ease, border-color 180ms ease;
}

.primary-button {
  color: #ffffff;
  background: linear-gradient(135deg, var(--blue), var(--teal));
  box-shadow: 0 16px 32px rgba(31, 111, 159, 0.26);
}

.secondary-button {
  color: var(--deep);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
}

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

.primary-button:hover {
  box-shadow: 0 20px 40px rgba(31, 111, 159, 0.3);
}

.secondary-button:hover {
  border-color: rgba(31, 111, 159, 0.3);
  box-shadow: var(--soft-shadow);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 760px;
  overflow: hidden;
  border: 1px solid rgba(219, 231, 237, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--soft-shadow);
}

.hero-metrics div {
  padding: 18px 20px;
  border-right: 1px solid rgba(219, 231, 237, 0.85);
}

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

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

.hero-metrics strong {
  color: var(--deep);
  font-size: 17px;
  line-height: 1.3;
}

.hero-metrics span {
  margin-top: 5px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.qr-panel,
.final-qr {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(219, 231, 237, 0.95);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.qr-panel {
  position: relative;
  justify-self: end;
  width: min(100%, 410px);
  padding: 26px;
  text-align: center;
}

.qr-panel::before {
  display: block;
  width: 100%;
  height: 5px;
  margin-bottom: 20px;
  content: "";
  background: linear-gradient(90deg, var(--blue), var(--teal), var(--gold), var(--coral));
  border-radius: 8px;
}

.qr-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 20px;
  text-align: left;
}

.qr-card-header span,
.qr-card-header strong {
  display: block;
}

.qr-card-header span {
  color: var(--muted);
  font-size: 13px;
}

.qr-card-header strong {
  color: var(--deep);
  font-size: 18px;
  line-height: 1.35;
}

.qr-panel img,
.final-qr img {
  width: min(100%, 248px);
  margin: 0 auto;
  border: 1px solid #edf3f6;
  border-radius: 8px;
}

.level-rail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 18px 0 20px;
}

.level-rail span {
  padding: 8px 4px;
  color: var(--deep);
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 850;
}

.qr-title {
  margin: 0 0 5px;
  color: var(--deep);
  font-size: 20px;
  font-weight: 850;
}

.qr-note {
  margin-bottom: 0;
  color: var(--muted);
}

.concerns,
.process-section,
.audiences-section {
  background: rgba(255, 255, 255, 0.94);
}

.section-heading {
  max-width: 860px;
  margin-bottom: 38px;
}

.question-grid,
.value-grid,
.process-grid,
.audience-grid {
  display: grid;
  gap: 18px;
}

.question-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.question-grid div,
.value-card,
.process-step,
.audience-grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.question-grid div {
  min-height: 162px;
  padding: 24px;
  box-shadow: 0 10px 26px rgba(13, 36, 50, 0.045);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.question-grid div:hover,
.value-card:hover,
.audience-grid article:hover {
  transform: translateY(-3px);
  border-color: rgba(31, 111, 159, 0.22);
  box-shadow: var(--soft-shadow);
}

.question-grid strong {
  display: block;
  margin-bottom: 10px;
  color: var(--deep);
  font-size: 18px;
  line-height: 1.4;
}

.question-grid span {
  display: block;
  color: var(--muted);
}

.value-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.value-card {
  min-height: 282px;
  padding: 26px;
  box-shadow: 0 14px 38px rgba(13, 36, 50, 0.06);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.card-index {
  display: inline-flex;
  margin-bottom: 42px;
  color: var(--coral);
  font-size: 14px;
  font-weight: 900;
}

.value-card p,
.process-step p,
.audience-grid p {
  margin-bottom: 0;
  color: var(--muted);
}

.process-section {
  position: relative;
}

.process-line {
  height: 2px;
  max-width: 820px;
  margin: 0 0 -38px 68px;
  background: linear-gradient(90deg, var(--teal), var(--gold), var(--coral));
  border-radius: 8px;
}

.process-grid {
  position: relative;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.process-step {
  padding: 30px;
  box-shadow: 0 14px 36px rgba(13, 36, 50, 0.055);
}

.process-step span {
  display: grid;
  width: 46px;
  height: 46px;
  margin-bottom: 24px;
  place-items: center;
  color: #ffffff;
  background: linear-gradient(135deg, var(--teal), var(--blue));
  border: 4px solid #ffffff;
  border-radius: 8px;
  box-shadow: 0 10px 22px rgba(15, 154, 138, 0.22);
  font-size: 20px;
  font-weight: 900;
}

.score-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  align-items: center;
  gap: 42px;
  color: #ffffff;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(135deg, var(--deep), #155575 58%, #0b8f80);
  background-size: 48px 48px, auto;
}

.score-band h2,
.score-band p,
.score-band .eyebrow {
  color: #ffffff;
}

.score-band p {
  max-width: 900px;
  margin-bottom: 0;
  opacity: 0.9;
}

.score-badge {
  display: grid;
  width: 198px;
  height: 198px;
  place-items: center;
  justify-self: end;
  text-align: center;
  background: rgba(255, 255, 255, 0.13);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 8px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.16);
}

.score-badge strong {
  display: block;
  color: var(--gold);
  font-size: 60px;
  line-height: 1;
}

.score-badge span {
  display: block;
  margin-top: 8px;
  font-weight: 850;
}

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

.audience-grid article {
  padding: 26px;
  box-shadow: 0 10px 26px rgba(13, 36, 50, 0.045);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.assurance-band {
  background:
    linear-gradient(90deg, rgba(31, 111, 159, 0.06), rgba(31, 111, 159, 0) 48%),
    var(--soft);
}

.assurance-band .section-heading {
  max-width: 920px;
  margin-bottom: 0;
}

.final-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  align-items: center;
  gap: 36px;
  background:
    linear-gradient(135deg, #ffffff, rgba(233, 248, 245, 0.78));
}

.final-copy {
  max-width: 800px;
}

.final-qr {
  padding: 22px;
  text-align: center;
}

.final-qr img {
  width: 210px;
}

.final-qr p {
  margin: 16px 0 0;
  color: var(--deep);
  font-weight: 850;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 26px clamp(18px, 5vw, 72px);
  color: rgba(255, 255, 255, 0.72);
  background: var(--deep);
}

.site-footer p {
  margin: 0;
}

.footer-lines {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.beian {
  font-size: 13px;
  opacity: 0.75;
}

.site-footer a {
  color: #ffffff;
}

@media (max-width: 980px) {
  .site-header {
    gap: 16px;
  }

  .nav-links {
    gap: 14px;
    font-size: 14px;
  }

  .hero,
  .score-band,
  .final-cta {
    grid-template-columns: 1fr;
  }

  .qr-panel,
  .score-badge {
    justify-self: start;
  }

  .question-grid,
  .value-grid,
  .audience-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero {
    min-height: auto;
  }

  .process-line {
    display: none;
  }
}

@media (max-width: 760px) {
  .site-header {
    position: static;
    align-items: flex-start;
  }

  .brand span:last-child {
    white-space: normal;
  }

  .nav-links {
    display: none;
  }

  section {
    padding: 58px 18px;
  }

  .hero {
    min-height: auto;
    padding-top: 44px;
  }

  h1 {
    font-size: 38px;
  }

  .hero-lede {
    font-size: 23px;
  }

  .hero-text,
  .section-heading p,
  .score-band p,
  .final-copy p {
    font-size: 16px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .hero-metrics,
  .question-grid,
  .value-grid,
  .process-grid,
  .audience-grid {
    grid-template-columns: 1fr;
  }

  .hero-metrics div {
    border-right: 0;
    border-bottom: 1px solid rgba(219, 231, 237, 0.85);
  }

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

  .question-grid div,
  .value-card {
    min-height: auto;
  }

  .card-index {
    margin-bottom: 24px;
  }

  .score-badge {
    width: 100%;
    height: auto;
    min-height: 150px;
  }

  .final-qr,
  .qr-panel {
    width: 100%;
  }

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

@media (max-width: 520px) {
  .site-header {
    min-height: 62px;
    padding: 12px 14px;
  }

  .brand {
    align-items: flex-start;
    font-size: 14px;
    line-height: 1.35;
  }

  .brand-mark {
    width: auto;
    min-width: 80px;
    height: 34px;
    flex: 0 0 auto;
    padding: 0 9px;
  }

  section {
    padding: 46px 14px;
  }

  .hero {
    padding-top: 34px;
    gap: 28px;
  }

  h1 {
    font-size: 33px;
    line-height: 1.14;
  }

  h2 {
    font-size: 27px;
  }

  h3 {
    font-size: 19px;
  }

  .hero-lede {
    font-size: 21px;
  }

  .hero-metrics div {
    padding: 16px;
  }

  .qr-panel {
    padding: 20px;
  }

  .qr-card-header {
    display: block;
  }

  .qr-card-header strong {
    margin-top: 3px;
  }

  .qr-panel img,
  .final-qr img {
    width: min(100%, 230px);
  }

  .question-grid div,
  .value-card,
  .process-step,
  .audience-grid article {
    padding: 20px;
  }

  .score-band {
    gap: 28px;
  }

  .score-badge strong {
    font-size: 48px;
  }
}