:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #5f6b7a;
  --soft: #f7faf8;
  --surface: #ffffff;
  --line: #dfe6e2;
  --green: #116149;
  --green-2: #dff2e6;
  --blue: #1f6f99;
  --navy: #10243a;
  --amber: #c98715;
  --red: #a34336;
  --shadow: 0 24px 80px rgba(16, 36, 58, 0.14);
  /* Native stack: Latin uses San Francisco/Segoe, CJK falls to PingFang/YaHei — crisp and professional for a Chinese-first health product. */
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--soft);
  color: var(--ink);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px clamp(20px, 4vw, 64px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(223, 230, 226, 0.86);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.72), transparent 42%),
    linear-gradient(135deg, var(--green), var(--blue));
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 26px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 550;
}

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

.lang-toggle {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--navy);
  font: inherit;
  font-weight: 750;
  font-size: 13px;
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.lang-toggle:hover {
  border-color: var(--green);
  color: var(--green);
}

.price-unit {
  font-size: 0.5em;
  font-weight: 700;
  color: var(--muted);
}

.hero {
  background:
    linear-gradient(135deg, rgba(223, 242, 230, 0.92), rgba(255, 255, 255, 0.82) 46%, rgba(232, 243, 249, 0.86)),
    #fff;
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 1fr);
  gap: clamp(36px, 6vw, 80px);
  align-items: center;
  width: min(1160px, calc(100% - 48px));
  margin: 0 auto;
  padding: clamp(56px, 9vh, 104px) 0;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 18ch;
  margin-bottom: 20px;
  font-size: clamp(30px, 3.4vw, 50px);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -0.01em;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(24px, 2.7vw, 38px);
  font-weight: 700;
  line-height: 1.26;
  letter-spacing: -0.01em;
}

h3 {
  margin-bottom: 10px;
  font-size: 19px;
  font-weight: 700;
}

.lead {
  max-width: 46ch;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 34px 0 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 650;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

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

.button.primary {
  background: var(--green);
  color: #fff;
  box-shadow: 0 16px 34px rgba(17, 97, 73, 0.22);
}

.button.secondary {
  background: #fff;
  border-color: var(--line);
  color: var(--navy);
}

.trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.trust-strip span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(17, 97, 73, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  color: #315547;
  font-size: 13px;
  font-weight: 600;
}

.product-visual {
  position: relative;
}

.dashboard-window {
  overflow: hidden;
  border: 1px solid rgba(16, 36, 58, 0.12);
  border-radius: 22px;
  background: #f9fbfb;
  box-shadow: var(--shadow);
}

.window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 18px;
  background: #10243a;
  color: #eef6f4;
}

.window-bar span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #6f8192;
}

.window-bar span:first-child {
  background: #f26f61;
}

.window-bar span:nth-child(2) {
  background: #efbd4f;
}

.window-bar span:nth-child(3) {
  background: #4bbd72;
}

.window-bar strong {
  margin-left: 10px;
  font-size: 14px;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 14px;
  padding: 18px;
}

.dashboard-grid section {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}

.summary-card {
  grid-column: 1 / -1;
  min-height: 220px;
  padding: 24px;
}

.dark-card {
  background:
    radial-gradient(circle at 82% 18%, rgba(201, 135, 21, 0.38), transparent 25%),
    linear-gradient(135deg, #10243a, #143f37) !important;
  color: #fff;
}

.summary-card p,
.question-card p {
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.summary-card h2 {
  max-width: 520px;
  margin-bottom: 24px;
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.35;
  font-weight: 650;
}

.mini-plan {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.mini-plan span {
  padding: 9px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  font-size: 13px;
  font-weight: 850;
}

.indicator-card,
.report-card,
.question-card {
  padding: 18px;
}

.indicator-card strong {
  display: inline-block;
  margin-top: 8px;
  color: var(--green);
  font-size: 46px;
  font-weight: 700;
  line-height: 1;
}

.indicator-card span,
.indicator-card small,
.report-card p {
  color: var(--muted);
}

.sparkline {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  align-items: end;
  gap: 7px;
  height: 96px;
  margin-top: 18px;
}

.sparkline i {
  display: block;
  border-radius: 8px 8px 2px 2px;
  background: linear-gradient(180deg, #8ed0ab, var(--green));
}

.report-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.status-dot {
  flex: 0 0 auto;
  width: 12px;
  height: 12px;
  margin-top: 5px;
  border-radius: 999px;
  background: #4bbd72;
}

.question-card {
  grid-column: 1 / -1;
  background: #f3f7fb !important;
}

.question-card p {
  color: var(--blue);
}

.question-card strong {
  display: block;
  max-width: 580px;
  font-size: 19px;
  font-weight: 650;
  line-height: 1.4;
}

.logo-band {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  border-bottom: 1px solid var(--line);
  background: var(--line);
}

.logo-band span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 72px;
  background: #fff;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.section {
  width: min(1100px, calc(100% - 48px));
  margin: 0 auto;
  padding: clamp(64px, 9vw, 96px) 0;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 40px;
}

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

.workflow-grid article,
.price-card {
  min-height: 248px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 12px 36px rgba(16, 36, 58, 0.05);
}

.workflow-grid span {
  display: inline-flex;
  margin-bottom: 30px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.workflow-grid p,
.split-section p,
.apply-copy p,
.price-card li {
  color: var(--muted);
  line-height: 1.68;
}

.split-section,
.apply-section {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(28px, 5vw, 70px);
  align-items: start;
}

.insight-stack {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: var(--shadow);
}

.insight-row {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 20px;
  padding: 24px;
  border-bottom: 1px solid var(--line);
}

.insight-row:last-child {
  border-bottom: 0;
}

.insight-row span {
  color: var(--muted);
  line-height: 1.6;
}

.pricing {
  width: min(1040px, calc(100% - 40px));
}

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

.price-card h3 {
  margin-bottom: 20px;
  font-size: 36px;
  font-weight: 700;
}

.price-card p {
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.price-card ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.price-card li::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 10px;
  border-radius: 999px;
  background: var(--green);
}

.price-card.featured {
  border-color: rgba(17, 97, 73, 0.28);
  background: #eef8f1;
}

.apply-section {
  width: min(1060px, calc(100% - 40px));
  margin-bottom: 44px;
  padding: 42px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  box-shadow: var(--shadow);
}

.medical-boundary {
  margin-top: 22px;
  padding: 16px;
  border: 1px solid rgba(163, 67, 54, 0.18);
  border-radius: 10px;
  background: rgba(163, 67, 54, 0.06);
  color: var(--red);
  font-size: 13px;
  line-height: 1.55;
  font-weight: 500;
}

.waitlist-form {
  display: grid;
  gap: 15px;
}

label {
  display: grid;
  gap: 8px;
  color: var(--navy);
  font-size: 14px;
  font-weight: 600;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-weight: 500;
}

input,
select {
  min-height: 46px;
  padding: 0 13px;
}

textarea {
  padding: 13px;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  outline: 3px solid rgba(17, 97, 73, 0.15);
  border-color: var(--green);
}

.form-status {
  min-height: 22px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.form-status.success {
  color: var(--green);
}

.form-status.error {
  color: var(--red);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 30px clamp(20px, 4vw, 64px);
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: #fff;
  font-size: 14px;
}

@media (max-width: 960px) {
  .site-header nav a {
    display: none;
  }

  .site-header nav {
    gap: 0;
  }

  .hero-inner,
  .split-section,
  .apply-section {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    min-height: auto;
    padding: 52px 0;
  }

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

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

@media (max-width: 640px) {
  .hero-inner,
  .section,
  .pricing,
  .apply-section {
    width: min(100% - 28px, 560px);
  }

  h1 {
    font-size: 32px;
  }

  .lead {
    font-size: 16px;
  }

  .hero-actions .button,
  .workflow-grid,
  .pricing-grid,
  .dashboard-grid,
  .insight-row {
    grid-template-columns: 1fr;
  }

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

  .dashboard-grid {
    display: grid;
  }

  .summary-card,
  .question-card {
    grid-column: auto;
  }

  .apply-section {
    padding: 24px;
  }

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