:root {
  --ink: #0c2233;
  --ink-2: #2f4a5e;
  --muted: #6b8199;
  --muted-2: #8fa4b7;
  --line: #dce8f2;
  --line-soft: #eaf2f8;
  --bg: #f6faff;
  --paper: #ffffff;
  --primary: #1f6e9f;
  --primary-deep: #124a6b;
  --sky: #a8d7ec;
  --mint: #dff3f1;
  --warm: #f0b35a;
  --radius: 20px;
  --shadow-sm: 0 2px 10px rgba(17, 60, 90, 0.05);
  --shadow: 0 12px 40px rgba(17, 60, 90, 0.09);
  --shadow-lg: 0 24px 70px rgba(17, 60, 90, 0.14);
  --wrap: 1160px;
  --font: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei",
    "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

h1,
h2,
h3,
p,
ul {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

.sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--paper);
  border-radius: 10px;
  box-shadow: var(--shadow);
}

.skip:focus {
  left: 16px;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 6px;
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------------- header ---------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(246, 250, 255, 0.82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid rgba(220, 232, 242, 0.7);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ink);
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(145deg, #eaf6ff, #d6ecf8);
  color: var(--primary);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.brand-mark svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
  opacity: 0.9;
}

.brand-mark .mark-line {
  fill: none;
  stroke: #ffffff;
  stroke-width: 2.4;
  stroke-linecap: round;
  opacity: 0.95;
}

.brand-text {
  font-size: 19px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav a {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 15px;
  color: var(--ink-2);
  transition: background 0.2s ease, color 0.2s ease;
}

.nav a:hover {
  color: var(--primary-deep);
  background: #e9f3fb;
}

.nav .nav-cta {
  margin-left: 10px;
  padding: 9px 20px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-deep) 100%);
  box-shadow: 0 6px 18px rgba(31, 110, 159, 0.25);
}

.nav .nav-cta:hover {
  color: #fff;
  background: linear-gradient(135deg, #2580b8 0%, #155878 100%);
}

/* ---------------- hero ---------------- */

.hero {
  position: relative;
  overflow: hidden;
  padding: 84px 0 40px;
  background:
    radial-gradient(900px 500px at 78% 8%, rgba(168, 215, 236, 0.55), transparent 62%),
    radial-gradient(700px 460px at 8% 30%, rgba(223, 243, 241, 0.75), transparent 65%),
    linear-gradient(180deg, #f9fcff 0%, var(--bg) 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(31, 110, 159, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 110, 159, 0.045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 20%, transparent 78%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: 56px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--primary);
}

.eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--warm);
  box-shadow: 0 0 0 4px rgba(240, 179, 90, 0.18);
}

.hero h1 {
  margin-top: 20px;
  font-size: clamp(44px, 6vw, 72px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.hero h1 .grad {
  background: linear-gradient(120deg, var(--primary) 0%, #3e9bc2 45%, #4fb3a6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead {
  margin-top: 22px;
  max-width: 34em;
  font-size: 17px;
  line-height: 1.9;
  color: var(--ink-2);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 52px;
  padding: 0 26px;
  border-radius: 14px;
  font-size: 16px;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button .icon {
  width: 18px;
  height: 18px;
  transition: transform 0.2s ease;
}

.button:hover .icon {
  transform: translateX(3px);
}

.button.primary {
  color: #fff;
  background: linear-gradient(135deg, #2378ab 0%, #124a6b 100%);
  box-shadow: 0 14px 30px rgba(18, 74, 107, 0.28);
}

.button.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 38px rgba(18, 74, 107, 0.32);
}

.button.ghost {
  color: var(--primary-deep);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(31, 110, 159, 0.22);
}

.button.ghost:hover {
  background: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 30px;
  font-size: 14px;
  color: var(--muted);
}

.hero-points li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.hero-points .icon {
  width: 16px;
  height: 16px;
  color: #2e9e86;
  stroke-width: 2.2;
}

/* hero visual */

.hero-visual {
  position: relative;
  min-height: 440px;
  display: grid;
  place-items: center;
}

.orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px dashed rgba(31, 110, 159, 0.22);
}

.orbit-a {
  width: 430px;
  height: 430px;
  animation: spin 60s linear infinite;
}

.orbit-b {
  width: 320px;
  height: 320px;
  border-style: solid;
  border-color: rgba(31, 110, 159, 0.1);
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.hero-card {
  position: relative;
  width: min(100%, 340px);
  padding: 24px 24px 10px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 24px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.hc-head {
  display: flex;
  align-items: center;
  gap: 9px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.hc-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #35b39a;
  box-shadow: 0 0 0 4px rgba(53, 179, 154, 0.15);
}

.hc-step {
  display: flex;
  gap: 14px;
  padding: 15px 0;
  border-bottom: 1px dashed var(--line);
}

.hc-step:last-child {
  border-bottom: 0;
}

.hc-num {
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: #eef7fd;
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.hc-step strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
}

.hc-step small {
  display: block;
  margin-top: 2px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--muted);
}

.float-chip {
  position: absolute;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--primary-deep);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(31, 110, 159, 0.14);
  box-shadow: 0 8px 24px rgba(17, 60, 90, 0.1);
  animation: float 6s ease-in-out infinite;
}

.chip-1 {
  top: 44px;
  left: 2%;
  color: #8a5a12;
  border-color: rgba(240, 179, 90, 0.4);
  animation-delay: -1s;
}

.chip-2 {
  top: 150px;
  right: 0;
  color: #1c7b66;
  border-color: rgba(53, 179, 154, 0.32);
  animation-delay: -2.4s;
}

.chip-3 {
  bottom: 92px;
  left: 0;
  animation-delay: -3.6s;
}

.chip-4 {
  bottom: 20px;
  right: 6%;
  color: #8a4a6d;
  border-color: rgba(180, 110, 150, 0.3);
  animation-delay: -4.8s;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

/* ---------------- stats ---------------- */

.stats {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 34px;
  padding: 26px 10px;
  background: var(--paper);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(220, 232, 242, 0.8);
}

.stat {
  text-align: center;
  padding: 4px 10px;
  border-right: 1px solid var(--line-soft);
}

.stat:last-child {
  border-right: 0;
}

.stat strong {
  display: block;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--primary-deep);
  font-variant-numeric: tabular-nums;
}

.stat span {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--muted);
}

/* ---------------- sections ---------------- */

.section {
  padding: 96px 0 0;
  scroll-margin-top: 90px;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 48px;
  margin-bottom: 40px;
}

.section-head h2 {
  margin-top: 14px;
  font-size: clamp(30px, 3.6vw, 42px);
  line-height: 1.25;
  letter-spacing: -0.015em;
  font-weight: 700;
}

.section-lead {
  max-width: 30em;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--muted);
}

.br-mobile {
  display: none;
}

/* AI cards */

.ai-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.ai-card {
  position: relative;
  padding: 26px 22px 28px;
  background: var(--paper);
  border: 1px solid rgba(220, 232, 242, 0.85);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.ai-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(31, 110, 159, 0.22);
}

.ai-icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(145deg, #eaf6ff, #dbeef9);
  color: var(--primary);
}

.ai-icon .icon {
  width: 23px;
  height: 23px;
}

.ai-card h3 {
  margin-top: 20px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
}

.ai-card p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------------- products ---------------- */

.products-section {
  padding-top: 104px;
}

.group {
  padding: 30px;
  background: linear-gradient(170deg, #f2f9ff 0%, #eef9f7 100%);
  border: 1px solid rgba(31, 110, 159, 0.1);
  border-radius: 26px;
}

.group-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 36px;
  margin-bottom: 24px;
}

.group-title {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.group-badge {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.group-badge.health {
  color: #1a7a66;
  background: rgba(53, 179, 154, 0.14);
  border: 1px solid rgba(53, 179, 154, 0.22);
}

.group-head h3 {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.group-head > p {
  max-width: 27em;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
  text-align: right;
}

.health-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.app-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.95);
  border-radius: 18px;
  box-shadow: 0 2px 8px rgba(17, 60, 90, 0.04);
  transition: transform 0.22s ease, box-shadow 0.22s ease, background 0.22s ease;
}

.app-card:hover {
  transform: translateY(-3px);
  background: #fff;
  box-shadow: 0 14px 30px rgba(17, 60, 90, 0.1);
}

.app-icon {
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 13px;
}

.app-icon .icon {
  width: 21px;
  height: 21px;
  stroke-width: 1.7;
}

.tint-blue {
  color: #1f6e9f;
  background: #e8f4fc;
}

.tint-rose {
  color: #c0556b;
  background: #fdeef1;
}

.tint-violet {
  color: #7a5bb5;
  background: #f1edfc;
}

.tint-green {
  color: #2d8a6e;
  background: #e8f7f1;
}

.tint-amber {
  color: #b57717;
  background: #fdf3e3;
}

.tint-teal {
  color: #1a8b8b;
  background: #e4f6f6;
}

.tint-orange {
  color: #c2701f;
  background: #fdf0e2;
}

.app-body {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.app-name {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
}

.app-desc {
  margin-top: 5px;
  font-size: 12.8px;
  line-height: 1.65;
  color: var(--muted);
}

.app-tag {
  margin-top: 9px;
  font-size: 11.5px;
  color: var(--primary);
  letter-spacing: 0.02em;
}

.app-arrow {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-left: auto;
  margin-top: 3px;
  color: var(--muted-2);
  transition: transform 0.22s ease, color 0.22s ease;
}

.app-card:hover .app-arrow {
  color: var(--primary);
  transform: translateX(3px);
}

.group-note {
  margin-top: 18px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted-2);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.product-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px;
  background: var(--paper);
  border: 1px solid rgba(220, 232, 242, 0.9);
  border-radius: 22px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
}

a.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(31, 110, 159, 0.2);
}

.pc-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.pc-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--muted-2);
  letter-spacing: 0.02em;
}

.pc-link .icon {
  width: 14px;
  height: 14px;
  transition: transform 0.2s ease;
}

.product-card:hover .pc-link .icon {
  transform: translateX(2px);
}

.pc-status {
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding: 0 11px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: #7a5bb5;
  background: #f1edfc;
  border: 1px solid rgba(122, 91, 181, 0.18);
}

.product-card h3 {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.pc-desc {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.pc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.pc-tags span {
  padding: 4px 10px;
  border-radius: 7px;
  font-size: 12px;
  color: var(--ink-2);
  background: #f1f7fc;
}

.product-card.soon {
  background: linear-gradient(165deg, #ffffff 0%, #faf8ff 100%);
  border-style: dashed;
  border-color: rgba(122, 91, 181, 0.25);
}

.pc-soon {
  margin-top: 18px;
  font-size: 12.5px;
  color: var(--muted-2);
}

/* ---------------- principles ---------------- */

.principles {
  padding-bottom: 8px;
}

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

.principle {
  padding: 26px 22px;
  background: var(--paper);
  border: 1px solid rgba(220, 232, 242, 0.85);
  border-radius: var(--radius);
}

.p-index {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--warm);
}

.principle h3 {
  margin-top: 12px;
  font-size: 17px;
  font-weight: 600;
}

.principle p {
  margin-top: 9px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------------- cta ---------------- */

.cta-band {
  margin-top: 96px;
}

.cta-inner {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 44px 48px;
  border-radius: 26px;
  color: #fff;
  background:
    radial-gradient(600px 300px at 85% 0%, rgba(126, 200, 212, 0.35), transparent 60%),
    linear-gradient(120deg, #123f5b 0%, #1f6e9f 62%, #2f8f9b 100%);
  box-shadow: 0 24px 60px rgba(18, 74, 107, 0.25);
}

.cta-inner::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -110px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.cta-inner h2 {
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.cta-inner p {
  margin-top: 8px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.78);
}

.button.light {
  position: relative;
  z-index: 1;
  flex: 0 0 auto;
  color: var(--primary-deep);
  background: #fff;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.16);
}

.button.light:hover {
  transform: translateY(-2px);
}

/* ---------------- footer ---------------- */

.site-footer {
  margin-top: 96px;
  padding: 64px 0 28px;
  background: #0d2536;
  color: rgba(255, 255, 255, 0.7);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 0.8fr);
  gap: 40px;
}

.footer-brand .brand {
  color: #fff;
}

.footer-brand .brand-mark {
  background: rgba(255, 255, 255, 0.08);
  color: #a8d7ec;
  box-shadow: none;
}

.footer-brand .brand-mark .mark-line {
  stroke: #0d2536;
}

.footer-brand p {
  margin-top: 16px;
  font-size: 13.5px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.55);
}

.footer-col h3 {
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.9);
}

.footer-col a,
.footer-soon {
  display: block;
  padding: 5px 0;
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.58);
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: #fff;
}

.footer-soon {
  color: rgba(255, 255, 255, 0.35);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 52px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.42);
}

.icp {
  color: rgba(255, 255, 255, 0.5);
  transition: color 0.2s ease;
}

.icp:hover {
  color: #fff;
}

/* ---------------- about / privacy pages ---------------- */

.page-hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 48px;
  background:
    radial-gradient(720px 360px at 82% 0%, rgba(168, 215, 236, 0.5), transparent 65%),
    linear-gradient(180deg, #f9fcff 0%, var(--bg) 100%);
}

.page-hero h1 {
  margin-top: 16px;
  font-size: clamp(36px, 4.4vw, 52px);
  letter-spacing: -0.02em;
  font-weight: 700;
}

.page-hero p {
  max-width: 42em;
  margin-top: 16px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-2);
}

.page-body {
  padding: 52px 0 0;
}

.prose {
  max-width: 780px;
}

.prose h2 {
  margin: 44px 0 14px;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.prose h2:first-child {
  margin-top: 0;
}

.prose p {
  margin: 12px 0;
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--ink-2);
}

.prose ul {
  margin: 14px 0;
  padding-left: 2px;
}

.prose li {
  position: relative;
  padding-left: 20px;
  margin: 8px 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-2);
}

.prose li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--sky);
}

.prose a {
  color: var(--primary);
  border-bottom: 1px solid rgba(31, 110, 159, 0.3);
}

.prose a:hover {
  border-bottom-color: var(--primary);
}

.product-lines {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 24px 0 8px;
}

.product-line {
  padding: 20px 22px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
}

.product-line h3 {
  font-size: 16px;
  font-weight: 600;
}

.product-line p {
  margin-top: 6px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.product-line a {
  display: inline-block;
  margin-top: 10px;
  font-size: 13px;
  color: var(--primary);
}

.muted-note {
  font-size: 13px;
  color: var(--muted-2);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 48px;
  font-size: 14px;
  color: var(--primary);
}

.back-link .icon {
  width: 16px;
  height: 16px;
  transform: rotate(180deg);
}

/* ---------------- responsive ---------------- */

@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-visual {
    min-height: 400px;
    order: 2;
  }

  .hero-copy {
    order: 1;
  }

  .ai-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .health-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .principle-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }

  .footer-col:last-child {
    display: none;
  }
}

@media (max-width: 760px) {
  .wrap {
    padding: 0 18px;
  }

  .header-inner {
    height: 64px;
  }

  .nav a:not(.nav-cta) {
    display: none;
  }

  .nav .nav-cta {
    margin-left: 0;
    padding: 8px 16px;
    font-size: 14px;
  }

  .hero {
    padding: 48px 0 20px;
  }

  .lead {
    font-size: 15.5px;
  }

  .actions .button {
    flex: 1 1 auto;
  }

  .hero-points {
    gap: 8px 16px;
    font-size: 13px;
  }

  .hero-visual {
    min-height: 360px;
    margin-top: 8px;
  }

  .orbit-a {
    width: 340px;
    height: 340px;
  }

  .orbit-b {
    width: 250px;
    height: 250px;
  }

  .float-chip {
    display: none;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px 0;
    padding: 20px 6px;
  }

  .stat:nth-child(2) {
    border-right: 0;
  }

  .stat:nth-child(3),
  .stat:nth-child(4) {
    padding-top: 18px;
    border-top: 1px solid var(--line-soft);
  }

  .stat strong {
    font-size: 26px;
  }

  .section {
    padding-top: 68px;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 28px;
  }

  .section-lead {
    font-size: 14.5px;
  }

  .br-mobile {
    display: inline;
  }

  .ai-grid {
    grid-template-columns: 1fr;
  }

  .group {
    padding: 22px 16px;
    border-radius: 20px;
  }

  .group-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .group-head > p {
    text-align: left;
  }

  .health-grid {
    grid-template-columns: 1fr;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .principle-grid {
    grid-template-columns: 1fr;
  }

  .cta-band {
    margin-top: 68px;
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 32px 24px;
  }

  .button.light {
    width: 100%;
  }

  .site-footer {
    margin-top: 68px;
    padding-top: 48px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px 20px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-col:last-child {
    display: block;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .product-lines {
    grid-template-columns: 1fr;
  }

  .page-hero {
    padding: 48px 0 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}