:root {
  --ink: #0b1117;
  --ink-soft: #17212b;
  --paper: #f4f5f2;
  --surface: #ffffff;
  --surface-soft: #eef1ef;
  --muted: #68727a;
  --muted-light: #aeb7bd;
  --line: #d9dddb;
  --line-dark: #2b3640;
  --blue: #123e5d;
  --teal: #08786f;
  --orange: #d4662f;
  --orange-dark: #b94f20;
  --max-width: 1180px;
  --radius: 2px;
  --shadow: 0 18px 50px rgba(13, 24, 32, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  color: #fff;
  background: var(--ink);
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: min(var(--max-width), calc(100% - 64px));
  margin-inline: auto;
}

.site-header {
  position: relative;
  z-index: 20;
  border-bottom: 1px solid rgba(11, 17, 23, 0.12);
  background: rgba(244, 245, 242, 0.96);
}

.nav-row {
  min-height: 76px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 28px;
}

.brand {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  justify-self: start;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: block;
  flex: 0 0 auto;
  overflow: hidden;
  background: #fff;
}

.brand-mark img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.brand-name {
  display: grid;
  color: var(--ink);
  font-size: 15px;
  font-weight: 750;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.brand-name small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  color: #4e5961;
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.primary-nav a {
  position: relative;
  padding: 28px 0 26px;
  transition: color 160ms ease;
}

.primary-nav a::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: var(--teal);
  content: "";
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 160ms ease;
}

.primary-nav a:hover,
.primary-nav a.active {
  color: var(--ink);
}

.primary-nav a.active::after,
.primary-nav a:hover::after {
  transform: scaleX(1);
}

.header-cta {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
}

.header-cta span {
  color: var(--orange);
}

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(11, 17, 23, 0.035) 1px, transparent 1px) 0 0 / 82px 82px,
    linear-gradient(rgba(11, 17, 23, 0.035) 1px, transparent 1px) 0 0 / 82px 82px,
    var(--paper);
}

.hero::before {
  position: absolute;
  top: -300px;
  right: -250px;
  width: 720px;
  height: 720px;
  border: 1px solid rgba(8, 120, 111, 0.16);
  border-radius: 50%;
  content: "";
}

.hero-grid {
  position: relative;
  min-height: 710px;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(360px, 0.75fr);
  align-items: center;
  gap: 76px;
  padding-block: 88px;
}

.hero-copy,
.system-panel {
  min-width: 0;
}

.hero-copy {
  animation: reveal-up 520ms ease-out both;
}

.eyebrow,
.section-kicker {
  margin: 0 0 26px;
  color: var(--teal);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
}

.eyebrow span {
  width: 34px;
  height: 1px;
  background: currentColor;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(3.9rem, 7vw, 6.8rem);
  font-weight: 720;
  letter-spacing: -0.07em;
  line-height: 0.88;
}

.hero h1 span {
  display: block;
  margin-top: 16px;
  color: var(--blue);
  font-size: 0.55em;
  font-weight: 520;
  letter-spacing: -0.045em;
  line-height: 1;
}

.hero-tagline {
  margin: 34px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.25rem, 2.3vw, 1.75rem);
  font-weight: 600;
  letter-spacing: -0.025em;
}

.hero-description {
  max-width: 680px;
  margin: 17px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 0 21px;
  border: 1px solid var(--ink);
  font-size: 13px;
  font-weight: 720;
  transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

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

.button-primary {
  border-color: var(--orange);
  color: #fff;
  background: var(--orange);
}

.button-primary:hover {
  border-color: var(--orange-dark);
  background: var(--orange-dark);
}

.button-secondary {
  background: transparent;
}

.button-secondary:hover {
  color: #fff;
  background: var(--ink);
}

.hero-footnote {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 28px 0 0;
  color: #7b858c;
  font-size: 12px;
}

.hero-footnote span,
.system-status span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 4px rgba(8, 120, 111, 0.1);
}

.system-panel {
  position: relative;
  padding: 24px;
  border: 1px solid rgba(11, 17, 23, 0.2);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow);
  animation: reveal-up 620ms 100ms ease-out both;
}

.system-panel::before {
  position: absolute;
  top: -1px;
  left: -1px;
  width: 72px;
  height: 3px;
  background: var(--teal);
  content: "";
}

.system-head,
.system-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #65717a;
  font-size: 9px;
  font-weight: 720;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.system-core {
  position: relative;
  width: min(100%, 260px);
  aspect-ratio: 1;
  margin: 30px auto;
  display: grid;
  place-items: center;
}

.system-core::before,
.system-core::after,
.orbit {
  position: absolute;
  border: 1px solid rgba(18, 62, 93, 0.2);
  border-radius: 50%;
  content: "";
}

.system-core::before {
  inset: 0;
}

.system-core::after {
  inset: 18%;
}

.orbit-one {
  inset: 33%;
  border-color: rgba(8, 120, 111, 0.45);
}

.orbit-two {
  inset: 7%;
  border-style: dashed;
  transform: rotate(18deg);
}

.core-axis {
  position: absolute;
  inset: 50% 0 auto;
  height: 1px;
  background: rgba(18, 62, 93, 0.12);
}

.core-axis::after {
  position: absolute;
  top: -130px;
  left: 50%;
  width: 1px;
  height: 260px;
  background: rgba(18, 62, 93, 0.12);
  content: "";
}

.core-mark {
  position: relative;
  z-index: 2;
  display: grid;
  justify-items: center;
}

.core-mark img {
  width: 76px;
  height: 76px;
  display: block;
  object-fit: cover;
  mix-blend-mode: multiply;
}

.core-mark span {
  margin-top: -4px;
  color: var(--muted);
  font-size: 8px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.orbit-point {
  position: absolute;
  width: 8px;
  height: 8px;
  border: 2px solid #fff;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 1px rgba(8, 120, 111, 0.35);
}

.point-one {
  top: 12%;
  left: 65%;
}

.point-two {
  right: 8%;
  bottom: 35%;
}

.point-three {
  bottom: 11%;
  left: 28%;
  background: var(--orange);
}

.system-index {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.system-index li {
  min-width: 0;
  display: grid;
  grid-template-columns: 28px 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.system-index span {
  color: var(--teal);
  font-size: 9px;
  font-weight: 700;
}

.system-index strong {
  font-size: 10px;
  letter-spacing: 0.1em;
}

.system-index em {
  color: var(--muted);
  font-size: 10px;
  font-style: normal;
}

.system-status {
  justify-content: flex-start;
  gap: 10px;
  margin-top: 18px;
}

.section {
  padding-block: 112px;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.52fr);
  gap: 60px;
  align-items: end;
  margin-bottom: 52px;
}

.section-heading h2,
.framework-intro h2,
.why-statement h2,
.compliance-grid h2 {
  margin: 0;
  font-size: clamp(2.35rem, 4.6vw, 4.2rem);
  font-weight: 560;
  letter-spacing: -0.055em;
  line-height: 1.05;
}

.section-heading > p,
.framework-intro > p,
.why-grid p {
  margin: 0;
  color: var(--muted);
}

.product-section {
  background: var(--surface);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.product-card {
  min-width: 0;
  min-height: 230px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 26px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  transition: color 180ms ease, background-color 180ms ease;
}

.product-card::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--teal);
  content: "";
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 180ms ease;
}

.product-card:hover {
  color: #fff;
  background: var(--ink-soft);
}

.product-card:hover::before {
  transform: scaleY(1);
}

.card-index {
  color: var(--teal);
  font-size: 10px;
  font-weight: 760;
  letter-spacing: 0.12em;
}

.product-card h3 {
  margin: 32px 0 10px;
  font-size: 21px;
  font-weight: 620;
  letter-spacing: -0.03em;
}

.product-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
  transition: color 180ms ease;
}

.product-card:hover p {
  color: #b9c3c9;
}

.card-arrow {
  position: absolute;
  top: 24px;
  right: 25px;
  color: var(--muted);
  font-size: 16px;
}

.product-card:hover .card-arrow {
  color: var(--orange);
}

.framework-section {
  color: #fff;
  background: var(--ink);
}

.framework-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(420px, 1.2fr);
  gap: 100px;
}

.section-kicker.light {
  color: #69b5ad;
}

.framework-intro > p {
  max-width: 470px;
  margin-top: 28px;
  color: var(--muted-light);
}

.framework-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-dark);
  list-style: none;
}

.framework-list li {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  padding: 23px 0;
  border-bottom: 1px solid var(--line-dark);
}

.framework-list > li > span {
  color: #69b5ad;
  font-size: 10px;
  font-weight: 750;
}

.framework-list strong {
  display: block;
  font-size: 16px;
  font-weight: 620;
  letter-spacing: 0.02em;
}

.framework-list p {
  margin: 6px 0 0;
  color: var(--muted-light);
  font-size: 13px;
  line-height: 1.7;
}

.why-section {
  background: var(--paper);
}

.why-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(450px, 1.15fr);
  gap: 110px;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.brand-lockup {
  width: min(100%, 360px);
  height: auto;
  display: block;
  margin-top: 52px;
  mix-blend-mode: multiply;
  opacity: 0.94;
}

.why-grid article {
  min-width: 0;
  min-height: 220px;
  padding: 26px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.45);
}

.why-grid span {
  color: var(--teal);
  font-size: 10px;
  font-weight: 750;
}

.why-grid h3 {
  margin: 47px 0 12px;
  font-size: 19px;
  font-weight: 630;
}

.why-grid p {
  font-size: 13px;
  line-height: 1.75;
}

.compliance-section {
  padding-block: 96px;
  color: #fff;
  background: var(--blue);
}

.compliance-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(440px, 1.18fr);
  gap: 100px;
  align-items: end;
}

.compliance-grid h2 {
  font-size: clamp(2.7rem, 5.4vw, 5rem);
}

.compliance-copy {
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.28);
}

.compliance-qr {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 24px;
  margin: 0 0 30px;
}

.compliance-qr figure {
  width: 156px;
  margin: 0;
}

.compliance-qr img {
  display: block;
  width: 156px;
  height: 156px;
  object-fit: cover;
  background: #fff;
}

.compliance-qr figcaption {
  margin-top: 10px;
  color: #dbe5e9;
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-align: center;
}

.compliance-copy p {
  margin: 0;
  color: #dbe5e9;
  font-size: 17px;
  line-height: 1.95;
}

.compliance-copy a {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 28px;
  color: #fff;
  font-size: 13px;
  font-weight: 720;
}

.compliance-copy a span {
  color: #f1a071;
}

.site-footer {
  color: #d8dfe3;
  background: #080d12;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(0, 1.25fr);
  gap: 80px;
  padding-block: 66px;
}

.footer-brand {
  display: flex;
  align-items: flex-start;
  gap: 15px;
}

.footer-brand .brand-mark {
  background: #fff;
}

.footer-brand strong {
  display: block;
  color: #fff;
  font-size: 16px;
}

.footer-brand p {
  margin: 4px 0 0;
  color: #76838c;
  font-size: 11px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px 24px;
  align-content: start;
}

.footer-nav a {
  color: #aab4ba;
  font-size: 12px;
  transition: color 160ms ease;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-block: 20px;
  border-top: 1px solid #202a32;
  color: #65717a;
  font-size: 10px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

a:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 4px;
}

@keyframes reveal-up {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1040px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(330px, 0.7fr);
    gap: 42px;
  }

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

  .framework-layout,
  .why-layout,
  .compliance-grid {
    gap: 60px;
  }
}

@media (max-width: 820px) {
  .shell {
    width: min(var(--max-width), calc(100% - 38px));
  }

  .nav-row {
    grid-template-columns: 1fr auto;
  }

  .primary-nav {
    display: none;
  }

  .hero-grid,
  .section-heading,
  .framework-layout,
  .why-layout,
  .compliance-grid,
  .footer-top {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-grid {
    gap: 58px;
    padding-block: 72px;
  }

  .hero h1 {
    font-size: clamp(3.45rem, 13vw, 5.6rem);
  }

  .system-panel {
    width: min(100%, 560px);
  }

  .section {
    padding-block: 84px;
  }

  .section-heading {
    gap: 22px;
  }

  .framework-layout,
  .why-layout,
  .compliance-grid {
    gap: 48px;
  }

  .framework-list {
    min-width: 0;
  }

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

@media (max-width: 560px) {
  .shell {
    width: calc(100% - 30px);
  }

  .site-header {
    background: var(--paper);
  }

  .nav-row {
    min-height: 68px;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
  }

  .brand-name small {
    display: none;
  }

  .header-cta {
    font-size: 0;
  }

  .header-cta span {
    font-size: 18px;
  }

  .hero-grid {
    min-height: auto;
    padding-block: 58px 68px;
  }

  .eyebrow {
    margin-bottom: 22px;
    font-size: 9px;
  }

  .hero h1 {
    font-size: clamp(3.2rem, 16vw, 4.4rem);
    letter-spacing: -0.075em;
  }

  .hero h1 span {
    margin-top: 12px;
    font-size: 0.48em;
  }

  .hero-tagline {
    margin-top: 28px;
  }

  .hero-description {
    font-size: 15px;
  }

  .hero-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .system-panel {
    padding: 19px;
  }

  .system-core {
    width: min(100%, 230px);
  }

  .system-index li {
    grid-template-columns: 24px 1fr;
  }

  .system-index em {
    grid-column: 2;
  }

  .section {
    padding-block: 70px;
  }

  .section-heading h2,
  .framework-intro h2,
  .why-statement h2 {
    font-size: 2.4rem;
  }

  .product-grid,
  .why-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .product-card {
    min-height: 210px;
  }

  .why-grid article {
    min-height: 190px;
  }

  .brand-lockup {
    width: min(100%, 300px);
    margin-top: 36px;
  }

  .compliance-section {
    padding-block: 72px;
  }

  .compliance-grid h2 {
    font-size: 2.9rem;
  }

  .compliance-copy p {
    font-size: 15px;
  }

  .compliance-qr {
    gap: 18px;
  }

  .compliance-qr figure,
  .compliance-qr img {
    width: 132px;
    height: 132px;
  }

  .compliance-qr figcaption {
    font-size: 11px;
  }

  .footer-top {
    gap: 42px;
    padding-block: 52px;
  }

  .footer-nav {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-bottom {
    flex-direction: column;
    gap: 6px;
  }
}

@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;
  }
}