:root {
  color-scheme: light;
  --page: #f5f5f7;
  --surface: #fffdfa;
  --surface-soft: rgba(255, 253, 250, 0.78);
  --ink: #17201b;
  --heading: #1d1d1f;
  --green: #14352f;
  --green-mid: #1d4c43;
  --muted: #59665f;
  --gold: #936a1e;
  --gold-soft: #f3e8cf;
  --line: rgba(24, 33, 28, 0.1);
  --border: rgba(0, 0, 0, 0.08);
  --focus: #8a5c08;
  --sans: "Avenir Next", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --serif: "Songti SC", "Noto Serif SC", "STSong", serif;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--page);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  min-width: 320px;
  margin: 0;
  background:
    radial-gradient(circle at 50% -20%, rgba(184, 135, 45, 0.08), transparent 38rem),
    var(--page);
  color: var(--ink);
  line-height: 1.65;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 8px;
  left: 8px;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--green);
  color: #fff;
  transform: translateY(-150%);
  transition: transform 160ms ease;
}

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

.shell {
  width: min(1120px, calc(100% - 32px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  min-height: 64px;
  border-bottom: 1px solid var(--line);
  background: rgba(245, 245, 247, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.header-inner {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(100, 67, 7, 0.2);
  border-radius: 10px;
  background: linear-gradient(145deg, var(--gold), #6f4908);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4), 0 2px 5px rgba(88, 59, 10, 0.15);
  color: #fff;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.brand-copy {
  display: grid;
  line-height: 1.12;
}

.brand-copy strong {
  font-size: 18px;
  letter-spacing: 0.01em;
}

.primary-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
}

.primary-nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0 13px;
  border-radius: 999px;
  color: #3f4944;
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
  white-space: nowrap;
  transition: background 160ms ease, color 160ms ease;
}

.primary-nav a:hover {
  background: #e8e8ed;
  color: var(--heading);
}

.nav-external {
  gap: 5px;
}

.nav-external > span:last-child {
  color: var(--gold);
  font-size: 15px;
}

.primary-nav a:focus-visible,
.brand:focus-visible,
.button:focus-visible,
.site-footer a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

main:focus-visible,
section[tabindex="-1"]:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

main {
  padding-block: 18px 22px;
}

.hero,
.section-block,
.boundary-panel {
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface-soft);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.hero {
  min-height: 360px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  align-items: stretch;
  overflow: hidden;
}

.hero-copy {
  padding: 48px 52px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}

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

h1 {
  margin-bottom: 0;
  color: var(--heading);
  font-family: var(--sans);
  font-size: clamp(72px, 8vw, 104px);
  font-weight: 800;
  letter-spacing: -0.065em;
  line-height: 0.92;
}

.hero-role {
  margin: 22px 0 0;
  color: var(--green);
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 700;
  line-height: 1.3;
}

.hero-rule {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.hero-actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease;
}

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

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

.button-primary:hover {
  background: var(--green-mid);
}

.status-panel {
  position: relative;
  overflow: hidden;
  margin: 22px;
  padding: 24px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    linear-gradient(160deg, rgba(243, 232, 207, 0.54), transparent 52%),
    #fff;
}

.status-panel::before {
  position: absolute;
  top: -1px;
  right: -1px;
  width: 100%;
  height: 100%;
  border-top-right-radius: 18px;
  background-image:
    linear-gradient(rgba(20, 53, 47, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 53, 47, 0.07) 1px, transparent 1px);
  background-size: 18px 18px;
  content: "";
  mask-image: linear-gradient(135deg, transparent 2%, #000 100%);
  -webkit-mask-image: linear-gradient(135deg, transparent 2%, #000 100%);
  pointer-events: none;
}

.status-panel > * {
  position: relative;
  z-index: 1;
}

.section-heading {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.section-icon {
  flex: 0 0 38px;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: #edf2ef;
  color: var(--green);
}

.section-icon svg {
  width: 21px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.section-heading h2 {
  margin: 2px 0 0;
  color: var(--green);
  font-size: 24px;
  line-height: 1.25;
}

.status-chips {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.status-chips li {
  min-height: 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 14px 10px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--green);
  font-size: 16px;
  font-weight: 800;
  text-align: center;
}

.status-chips li::before {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #2a7a57;
  box-shadow: 0 0 0 4px rgba(42, 122, 87, 0.12);
  content: "";
}

.section-block,
.boundary-panel {
  margin-top: 14px;
  padding: 26px 28px;
}

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

.medium-card {
  position: relative;
  min-height: 238px;
  overflow: hidden;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
}

.medium-card-software {
  background:
    radial-gradient(circle at 92% 10%, rgba(147, 106, 30, 0.1), transparent 12rem),
    linear-gradient(155deg, #fff, #fbf8f1);
}

.medium-card-physical {
  background:
    linear-gradient(rgba(20, 53, 47, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 53, 47, 0.045) 1px, transparent 1px),
    linear-gradient(155deg, #fff, #f3f8f5);
  background-size: 24px 24px, 24px 24px, auto;
}

.medium-symbol {
  width: 132px;
  height: 64px;
  margin: 0 0 20px;
  border: 1px solid var(--line);
  border-radius: 16px;
}

.medium-symbol-software {
  display: grid;
  place-items: center;
  background: rgba(243, 232, 207, 0.52);
  color: var(--gold);
}

.medium-symbol-software span {
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 24px;
  font-weight: 750;
  letter-spacing: -0.06em;
}

.medium-symbol-physical {
  position: relative;
  background:
    linear-gradient(rgba(20, 53, 47, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 53, 47, 0.07) 1px, transparent 1px),
    rgba(237, 242, 239, 0.84);
  background-size: 14px 14px, 14px 14px, auto;
}

.physical-axis {
  position: absolute;
  top: 34px;
  right: 18px;
  left: 18px;
  height: 2px;
  background: var(--green-mid);
  opacity: 0.55;
  transform: rotate(-8deg);
  transform-origin: center;
}

.physical-node {
  position: absolute;
  width: 12px;
  height: 12px;
  border: 3px solid #edf2ef;
  border-radius: 50%;
  background: var(--green-mid);
  box-shadow: 0 0 0 1px rgba(20, 53, 47, 0.22);
}

.node-one {
  top: 37px;
  left: 19px;
}

.node-two {
  top: 27px;
  left: 67px;
}

.node-three {
  top: 17px;
  right: 17px;
}

.medium-card h3 {
  margin-bottom: 0;
  color: var(--green);
  font-size: 25px;
}

.medium-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.medium-tags li {
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
}

.boundary-line {
  min-height: 86px;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
}

.boundary-line > span:first-child {
  padding: 6px 12px;
  border-radius: 999px;
  background: #edf2ef;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
}

.boundary-arrow {
  color: var(--gold);
  font-size: 20px;
}

.boundary-line strong {
  color: var(--green);
  font-size: 20px;
}

.site-footer {
  border-top: 1px solid var(--line);
}

.footer-inner {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: #4c5751;
  font-size: 14px;
}

.footer-inner > div {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.footer-inner strong {
  color: var(--green);
}

.compliance {
  justify-content: flex-end;
}

.compliance a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: #3f4944;
}

@media (max-width: 860px) {
  html {
    scroll-padding-top: 76px;
  }

  .shell {
    width: min(100% - 24px, 1120px);
  }

  .header-inner {
    gap: 8px;
  }

  .brand {
    min-height: 54px;
  }

  .primary-nav {
    width: auto;
    min-width: 0;
    flex: 0 1 auto;
    justify-content: flex-end;
    overflow-x: auto;
    padding-bottom: 0;
    scrollbar-color: rgba(20, 53, 47, 0.35) transparent;
    scrollbar-width: thin;
  }

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

  .hero-copy {
    padding: 38px 34px 30px;
  }

  .status-panel {
    margin-top: 0;
  }

  .footer-inner {
    padding-block: 22px;
    display: grid;
  }

  .compliance {
    justify-content: flex-start;
  }
}

@media (max-width: 560px) {
  .brand-mark {
    width: 32px;
    height: 32px;
    border-radius: 9px;
    font-size: 12px;
  }

  .brand-copy strong {
    font-size: 16px;
  }

  .primary-nav a {
    padding-inline: 11px;
    font-size: 13px;
  }

  main {
    padding-top: 12px;
  }

  .hero-copy {
    padding: 34px 22px 26px;
  }

  h1 {
    font-size: 62px;
    line-height: 0.94;
  }

  .hero-role {
    margin-top: 16px;
    font-size: 25px;
  }

  .hero-rule {
    font-size: 14px;
  }

  .status-panel {
    margin: 0 12px 12px;
    padding: 16px;
  }

  .status-chips {
    gap: 8px;
  }

  .status-chips li {
    min-height: 90px;
    gap: 10px;
    padding-inline: 6px;
    font-size: 14px;
  }

  .section-block,
  .boundary-panel {
    padding: 22px 18px;
  }

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

  .medium-card {
    min-height: 0;
  }

  .medium-symbol {
    width: 120px;
    height: 62px;
    margin: 0 0 18px;
  }

  .physical-axis {
    top: 30px;
  }

  .node-one {
    top: 33px;
  }

  .node-two {
    top: 24px;
  }

  .node-three {
    top: 15px;
  }

  .boundary-line {
    gap: 12px;
    padding: 16px;
  }

  .boundary-line strong {
    font-size: 18px;
  }

  .footer-inner,
  .footer-inner > div,
  .compliance {
    justify-items: center;
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 360px) {
  .primary-nav a {
    padding-inline: 9px;
    font-size: 12px;
  }

  h1 {
    font-size: 54px;
  }

  .hero-role {
    font-size: 22px;
  }

  .boundary-line {
    display: grid;
    justify-items: start;
    gap: 10px;
  }

  .boundary-arrow {
    display: none;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}