:root {
  color-scheme: light;
  --bg: #fbfcfc;
  --paper: #ffffff;
  --paper-soft: #f6f8f8;
  --ink: #071018;
  --ink-2: #1d2a33;
  --muted: #687782;
  --muted-2: #96a1a8;
  --line: #dce3e7;
  --line-strong: #bfcbd1;
  --teal: #0a8b82;
  --teal-soft: #e5f6f4;
  --coral: #ff604f;
  --coral-soft: #fff0ed;
  --amber: #f2a000;
  --amber-soft: #fff6df;
  --blue: #2279ff;
  --blue-soft: #edf4ff;
  --green: #1f9d63;
  --green-soft: #eaf8ef;
  --shadow: 0 16px 48px rgba(22, 35, 45, 0.08);
  --soft-shadow: 0 8px 30px rgba(22, 35, 45, 0.06);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 18px;
  --header-height: 78px;
  --max: 1480px;
  --mono: "SFMono-Regular", "Cascadia Code", "Roboto Mono", Consolas, monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #071018;
  --paper: #0f1921;
  --paper-soft: #111e27;
  --ink: #eef7f6;
  --ink-2: #d5e1df;
  --muted: #8ca0a7;
  --muted-2: #6b7d83;
  --line: #263842;
  --line-strong: #3a535e;
  --teal-soft: rgba(17, 167, 156, 0.14);
  --coral-soft: rgba(255, 96, 79, 0.14);
  --amber-soft: rgba(242, 160, 0, 0.14);
  --blue-soft: rgba(34, 121, 255, 0.14);
  --green-soft: rgba(31, 157, 99, 0.14);
  --shadow: 0 16px 48px rgba(0, 0, 0, 0.26);
  --soft-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(rgba(7, 16, 24, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(7, 16, 24, 0.03) 1px, transparent 1px),
    var(--bg);
  background-size: 64px 64px, 64px 64px, auto;
  color: var(--ink);
  font-family: var(--sans);
  letter-spacing: 0;
}

body.menu-open {
  overflow: hidden;
}

body::selection {
  background: rgba(10, 139, 130, 0.18);
}

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

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

img,
svg {
  display: block;
}

.paper-grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  opacity: 0.55;
  background-image:
    repeating-linear-gradient(0deg, rgba(11, 18, 22, 0.018) 0, rgba(11, 18, 22, 0.018) 1px, transparent 1px, transparent 4px),
    repeating-linear-gradient(90deg, rgba(11, 18, 22, 0.012) 0, rgba(11, 18, 22, 0.012) 1px, transparent 1px, transparent 5px);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-height);
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto minmax(180px, 1fr);
  align-items: center;
  gap: 24px;
  padding: 0 44px;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  width: max-content;
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--ink);
}

.prompt-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: var(--ink);
}

.prompt-mark svg {
  width: 34px;
  height: 34px;
  fill: none;
  stroke: currentColor;
  stroke-width: 3.3;
  stroke-linecap: square;
  stroke-linejoin: miter;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 42px;
  white-space: nowrap;
}

.nav-links a {
  position: relative;
  padding: 30px 0 26px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink-2);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  transform: scaleX(0);
  transform-origin: center;
  background: var(--teal);
  transition: transform 180ms ease;
}

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

.header-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 14px;
}

.icon-link,
.icon-button,
.menu-button {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
  color: var(--ink);
  transition: border-color 180ms ease, background 180ms ease, transform 180ms ease;
}

.icon-link:hover,
.icon-button:hover,
.menu-button:hover {
  border-color: var(--line-strong);
  background: var(--paper);
  transform: translateY(-1px);
}

.icon-link svg,
.icon-button svg {
  width: 24px;
  height: 24px;
}

.icon-link svg {
  fill: currentColor;
}

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

.icon-button .moon,
[data-theme="dark"] .icon-button .sun {
  display: none;
}

[data-theme="dark"] .icon-button .moon {
  display: block;
}

.menu-button {
  display: none;
}

.menu-button span {
  width: 20px;
  height: 2px;
  background: currentColor;
}

main {
  overflow: hidden;
}

.section-snap {
  width: min(var(--max), calc(100vw - 48px));
  margin: 0 auto;
}

.hero {
  min-height: calc(100vh - var(--header-height));
  display: grid;
  grid-template-columns: minmax(420px, 0.88fr) minmax(560px, 1.12fr);
  align-items: center;
  gap: 34px;
  padding: 70px 0 82px;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.pixel-line {
  display: flex;
  align-items: end;
  gap: 6px;
  height: 26px;
  margin-bottom: 4px;
}

.pixel-line span {
  display: block;
  background: var(--teal);
}

.pixel-line span:nth-child(1) {
  width: 8px;
  height: 8px;
}

.pixel-line span:nth-child(2) {
  width: 10px;
  height: 18px;
}

.pixel-line span:nth-child(3) {
  width: 72px;
  height: 4px;
}

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

.hero h1 {
  position: relative;
  display: inline-block;
  font-size: 6.7rem;
  line-height: 0.95;
  font-weight: 900;
  letter-spacing: 0;
  color: var(--ink);
}

.hero h1::after {
  content: "";
  position: absolute;
  left: 4px;
  right: 52%;
  bottom: -15px;
  height: 4px;
  background: var(--teal);
}

.hero-title {
  margin-top: 38px;
  font-size: 2.55rem;
  line-height: 1.28;
  font-weight: 850;
  color: var(--ink);
}

.hero-title span {
  color: var(--teal);
}

.hero-title::after {
  content: "";
  display: inline-block;
  width: 2px;
  height: 1.2em;
  margin-left: 12px;
  transform: translateY(8px);
  background: var(--teal);
  animation: blink 1.1s steps(2, start) infinite;
}

.signal-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 24px;
  margin-top: 40px;
}

.signal-row span {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 28px;
  font-size: 1rem;
  font-weight: 650;
  color: var(--ink-2);
}

.signal-row svg {
  width: 23px;
  height: 23px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.signal-break {
  flex-basis: 100%;
  height: 0;
}

.signal-agent svg {
  color: var(--green);
}

.signal-voice svg {
  color: var(--teal);
}

.signal-video svg {
  color: var(--coral);
}

.signal-tools svg {
  color: var(--amber);
}

.signal-edge svg {
  color: var(--blue);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 48px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  min-width: 250px;
  min-height: 72px;
  padding: 0 28px;
  border: 1px solid var(--ink);
  border-radius: var(--radius-md);
  font-size: 1.2rem;
  font-weight: 850;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, color 180ms ease;
}

.button svg {
  width: 25px;
  height: 25px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.button.primary {
  border-color: transparent;
  background: var(--teal);
  color: #fff;
  box-shadow: 0 16px 34px rgba(10, 139, 130, 0.22);
}

.button.ghost {
  background: var(--paper);
  color: var(--ink);
}

.button.ghost svg {
  fill: currentColor;
  stroke: none;
}

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

.mini-terminal {
  width: min(420px, 100%);
  margin-top: 48px;
  padding-top: 22px;
  border-top: 1px dashed var(--line-strong);
}

.mini-terminal .terminal-prompt {
  font-family: var(--mono);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--ink);
}

.mini-terminal code {
  margin-left: 10px;
  color: var(--teal);
  font-family: var(--mono);
  font-size: 0.95rem;
}

.mini-terminal p {
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.98rem;
}

.hero-orbit {
  position: relative;
  min-height: 680px;
  isolation: isolate;
}

.crosshair {
  position: absolute;
  inset: 2% 8%;
  z-index: -2;
  background:
    linear-gradient(90deg, transparent calc(50% - 0.5px), rgba(101, 119, 128, 0.2) 50%, transparent calc(50% + 0.5px)),
    linear-gradient(0deg, transparent calc(50% - 0.5px), rgba(101, 119, 128, 0.2) 50%, transparent calc(50% + 0.5px));
}

.orbit-ring {
  position: absolute;
  left: 50%;
  top: 50%;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.ring-one {
  width: 560px;
  height: 560px;
  border: 1px solid var(--line-strong);
  box-shadow: inset 0 0 0 2px rgba(7, 16, 24, 0.03);
}

.ring-two {
  width: 660px;
  height: 660px;
  border: 1px dashed color-mix(in srgb, var(--teal) 60%, var(--line));
  animation: spin 36s linear infinite;
}

.ring-three {
  width: 760px;
  height: 760px;
  border: 1px dashed color-mix(in srgb, var(--coral) 45%, var(--line));
  animation: spin 52s linear reverse infinite;
}

.avatar-shell {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 440px;
  height: 440px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  padding: 14px;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: 0 10px 40px rgba(7, 16, 24, 0.08);
  overflow: hidden;
}

.avatar-shell::after {
  content: "";
  position: absolute;
  inset: 23px;
  border: 1px solid rgba(7, 16, 24, 0.15);
  border-radius: 50%;
  pointer-events: none;
}

.avatar-shell img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

.orbit-node {
  position: absolute;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 8px 14px;
  min-width: 168px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  box-shadow: var(--soft-shadow);
  backdrop-filter: blur(12px);
}

.orbit-node strong {
  font-size: 0.98rem;
  line-height: 1.1;
}

.orbit-node em {
  grid-column: 2;
  font-family: var(--mono);
  font-size: 0.82rem;
  font-style: normal;
}

.node-icon {
  grid-row: span 2;
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 2px solid currentColor;
  background: var(--paper);
}

.node-icon svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.teal {
  color: var(--teal);
}

.coral {
  color: var(--coral);
}

.amber {
  color: var(--amber);
}

.blue {
  color: var(--blue);
}

.green {
  color: var(--green);
}

.node-agent {
  left: 42%;
  top: 4%;
  min-width: 190px;
}

.node-voice {
  left: 8%;
  top: 24%;
}

.node-video {
  right: 5%;
  top: 18%;
}

.node-tools {
  right: 0;
  top: 52%;
}

.node-edge {
  left: 10%;
  bottom: 16%;
}

.node-agent em {
  color: var(--green);
}

.node-voice em {
  color: var(--teal);
}

.node-video em {
  color: var(--coral);
}

.node-tools em {
  color: var(--amber);
}

.node-edge em {
  color: var(--blue);
}

.system-log {
  position: absolute;
  right: 3%;
  bottom: 2%;
  width: 280px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  box-shadow: var(--soft-shadow);
}

.system-log code,
.system-log span {
  display: block;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.7;
}

.system-log code {
  margin-bottom: 8px;
  color: var(--ink);
}

.system-log span {
  color: var(--ink-2);
}

.section-heading {
  display: grid;
  gap: 10px;
}

.section-heading p {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--muted-2);
  font-family: var(--mono);
  font-size: 0.95rem;
}

.section-heading p strong {
  color: var(--teal);
  font-size: 1.35rem;
}

.section-heading h2 {
  color: var(--ink);
  font-size: 3.2rem;
  line-height: 1.08;
  font-weight: 900;
}

.section-heading > span {
  color: var(--ink-2);
  font-size: 1.05rem;
}

.section-heading.compact h2 {
  position: relative;
  padding-left: 22px;
  font-size: 2.5rem;
}

.section-heading.compact h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 9px;
  height: 38px;
  border-radius: 5px;
  background: var(--teal);
}

.hand-note {
  width: max-content;
  max-width: 100%;
  color: var(--coral);
  font-size: 1.65rem;
  font-weight: 500;
  font-family: "Kaiti SC", "STKaiti", "KaiTi", cursive;
  border-bottom: 2px solid currentColor;
  transform: rotate(-1deg);
}

.coral-text {
  color: var(--coral);
}

.ability-section {
  position: relative;
  padding: 72px 0 56px;
  border-top: 1px solid var(--line);
}

.ability-section::before,
.notes-section::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(circle, color-mix(in srgb, var(--teal) 28%, transparent) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: linear-gradient(90deg, transparent 0, #000 20%, #000 80%, transparent 100%);
  opacity: 0.18;
}

.ability-map {
  position: relative;
  margin-top: 42px;
  min-height: 690px;
}

.connector-map {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.line {
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  animation: drawLine 1.4s ease forwards;
}

.line.teal {
  stroke: var(--teal);
}

.line.coral {
  stroke: var(--coral);
}

.line.amber {
  stroke: var(--amber);
}

.line.blue {
  stroke: var(--blue);
}

.line.green {
  stroke: var(--green);
}

.line.gray {
  stroke: var(--muted-2);
}

.core-orb {
  position: absolute;
  left: 50%;
  top: 48%;
  width: 250px;
  height: 250px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 12px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--paper);
  box-shadow:
    inset 0 0 0 9px color-mix(in srgb, var(--line) 38%, transparent),
    0 18px 44px rgba(7, 16, 24, 0.08);
  text-align: center;
}

.cube-icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  color: var(--ink);
}

.cube-icon svg {
  width: 42px;
  height: 42px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.core-orb strong {
  font-size: 1.22rem;
  line-height: 1.35;
  font-weight: 900;
}

.core-orb em {
  color: var(--muted);
  font-size: 0.95rem;
  font-style: normal;
}

.map-card {
  position: absolute;
  width: 280px;
  padding: 19px 20px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  box-shadow: var(--soft-shadow);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.map-card:hover {
  transform: translateY(-3px);
  border-color: var(--teal);
  background: var(--paper);
}

.map-card h3 {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 12px;
  color: var(--teal);
  font-size: 1.16rem;
  line-height: 1.25;
  font-weight: 900;
}

.map-card h3 span {
  color: currentColor;
  font-family: var(--mono);
  font-size: 1.5rem;
}

.map-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.map-card li {
  position: relative;
  padding-left: 18px;
  color: var(--ink-2);
  font-size: 0.86rem;
  line-height: 1.75;
}

.map-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
}

.map-card .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.map-card .tags span {
  min-height: 27px;
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--paper-soft);
  color: var(--ink-2);
  font-size: 0.78rem;
}

.map-card.voice {
  left: 30%;
  top: 0;
}

.map-card.agent {
  right: 21%;
  top: 0;
  border-style: solid;
  border-color: color-mix(in srgb, var(--green) 42%, var(--line));
  background: color-mix(in srgb, var(--green-soft) 34%, var(--paper));
}

.map-card.agent h3 {
  color: var(--green);
}

.map-card.agent li::before {
  background: var(--green);
}

.map-card.ocr {
  left: 21.5%;
  top: 206px;
}

.map-card.api {
  left: 17%;
  top: 420px;
}

.map-card.vision {
  left: 0;
  top: 170px;
}

.map-card.vision h3 {
  color: var(--coral);
}

.map-card.vision li::before {
  background: var(--coral);
}

.map-card.ops {
  right: 0;
  top: 170px;
}

.map-card.ops h3 {
  color: var(--amber);
}

.map-card.ops li::before {
  background: var(--amber);
}

.map-card.edge {
  right: 0;
  top: 454px;
}

.map-card.edge h3 {
  color: var(--blue);
}

.map-card.edge li::before {
  background: var(--blue);
}

.map-card.deploy {
  right: 19%;
  top: 424px;
}

.stack-rail {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 28px;
  margin-top: 34px;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--paper) 84%, transparent);
  box-shadow: var(--soft-shadow);
}

.stack-rail > div {
  display: grid;
  align-content: center;
  gap: 6px;
  color: var(--teal);
  font-weight: 850;
}

.stack-rail > div span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 500;
}

.stack-rail ul {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.stack-rail li {
  min-height: 58px;
  display: grid;
  align-content: center;
  gap: 4px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper);
}

.stack-rail b {
  color: var(--ink);
  font-size: 0.92rem;
}

.stack-rail span {
  color: var(--muted);
  font-size: 0.78rem;
}

.lab-section {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(460px, 1.2fr) minmax(280px, 0.78fr);
  gap: 28px;
  padding: 82px 0 64px;
  border-top: 1px dashed var(--line-strong);
}

.section-column {
  min-width: 0;
}

.principle-list {
  display: grid;
  gap: 24px;
  margin-top: 40px;
}

.principle-list article {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 16px;
  align-items: start;
}

.principle-list svg {
  width: 40px;
  height: 40px;
  padding: 6px;
  border: 2px solid var(--teal);
  border-radius: var(--radius-sm);
  fill: none;
  stroke: var(--teal);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.principle-list strong {
  display: block;
  margin-bottom: 5px;
  font-size: 1rem;
  line-height: 1.3;
}

.principle-list span {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.process-board {
  position: relative;
  min-height: 450px;
  padding: 38px 34px 30px 76px;
  border: 1px solid var(--line);
  background:
    linear-gradient(rgba(242, 160, 0, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242, 160, 0, 0.07) 1px, transparent 1px),
    color-mix(in srgb, var(--paper) 96%, var(--amber-soft));
  background-size: 24px 24px, 24px 24px, auto;
  box-shadow: 10px 10px 0 rgba(7, 16, 24, 0.08), var(--soft-shadow);
}

.binder-holes {
  position: absolute;
  left: 18px;
  top: 20px;
  bottom: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
}

.binder-holes span {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--line-strong) 70%, transparent);
  box-shadow: inset 0 2px 4px rgba(7, 16, 24, 0.12);
}

.process-board > p {
  margin-bottom: 32px;
  font-family: "Kaiti SC", "STKaiti", "KaiTi", cursive;
  font-size: 1.35rem;
  text-align: center;
}

.process-steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, minmax(74px, 1fr));
  gap: 22px;
}

.process-steps::after {
  content: "";
  position: absolute;
  left: 9%;
  right: 9%;
  top: 40px;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--ink) 0 10px, transparent 10px 18px);
  opacity: 0.45;
}

.process-steps span {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  gap: 8px;
  text-align: center;
}

.process-steps i {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  border: 2px solid var(--ink);
  border-radius: var(--radius-sm);
  background: var(--paper);
}

.process-steps i::before {
  content: "";
  display: block;
  width: 27px;
  height: 27px;
  border: 3px solid currentColor;
}

.process-steps .bulb {
  color: var(--amber);
  border-color: var(--amber);
  border-radius: 50%;
}

.process-steps .bulb::before {
  width: 18px;
  height: 26px;
  border-radius: 50% 50% 35% 35%;
  border-color: var(--amber);
}

.process-steps .window::before {
  width: 31px;
  height: 23px;
  border-color: var(--ink);
  box-shadow: inset 0 7px 0 rgba(7, 16, 24, 0.08);
}

.process-steps .wrench::before {
  width: 28px;
  height: 8px;
  border-radius: 8px;
  transform: rotate(-35deg);
}

.process-steps .chart::before {
  width: 30px;
  height: 24px;
  border-color: var(--teal);
  box-shadow: inset 7px -4px 0 rgba(10, 139, 130, 0.2), inset 16px -10px 0 rgba(10, 139, 130, 0.14);
}

.process-steps .box {
  color: var(--teal);
  border-color: var(--teal);
}

.process-steps .box::before {
  transform: rotate(45deg);
  border-color: var(--teal);
}

.process-steps b {
  font-size: 0.98rem;
}

.process-steps em {
  color: var(--muted);
  font-size: 0.76rem;
  font-style: normal;
}

.make-card {
  width: min(480px, 100%);
  margin: 34px auto 0;
  padding: 20px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  box-shadow: var(--soft-shadow);
}

.make-card code,
.make-card span {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 14px;
  font-family: var(--mono);
  font-size: 0.86rem;
  line-height: 1.6;
}

.make-card code {
  display: block;
  margin-bottom: 7px;
  color: var(--teal);
}

.make-card b {
  color: var(--ink);
  font-weight: 650;
}

.make-card em {
  color: var(--teal);
  font-style: normal;
}

.protocol-panel {
  min-height: 400px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background:
    linear-gradient(rgba(31, 157, 99, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 157, 99, 0.06) 1px, transparent 1px),
    color-mix(in srgb, var(--paper) 92%, transparent);
  background-size: 22px 22px, 22px 22px, auto;
  box-shadow: var(--soft-shadow);
}

.protocol-panel h3 {
  margin-bottom: 18px;
  color: var(--green);
  font-size: 1.05rem;
}

.protocol-panel code {
  display: block;
  margin-bottom: 18px;
  color: var(--green);
  font-family: var(--mono);
  font-size: 0.88rem;
}

.protocol-track {
  display: grid;
  gap: 10px;
  margin: 0 0 18px;
  padding: 0 0 18px;
  border-bottom: 1px dashed var(--line-strong);
}

.protocol-track span {
  display: grid;
  grid-template-columns: 82px 1fr;
  gap: 12px;
  align-items: center;
  min-height: 42px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
}

.protocol-track b {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.82rem;
}

.protocol-track em {
  color: var(--muted);
  font-size: 0.84rem;
  font-style: normal;
}

.protocol-list {
  display: grid;
  gap: 14px;
}

.protocol-list p {
  display: grid;
  gap: 4px;
  padding-left: 16px;
  border-left: 3px solid var(--green);
}

.protocol-list strong {
  color: var(--ink);
  font-size: 0.9rem;
}

.protocol-list span {
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.55;
}

.handoff-note {
  margin-top: 18px;
  padding: 15px;
  border: 1px solid color-mix(in srgb, var(--green) 38%, var(--line));
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--green-soft) 55%, var(--paper));
}

.handoff-note span {
  color: var(--ink-2);
  font-size: 0.9rem;
  line-height: 1.6;
}

.deliver-section {
  padding: 72px 0 68px;
  border-top: 1px dashed var(--line-strong);
}

.deliver-grid {
  display: grid;
  grid-template-columns: minmax(250px, 0.7fr) minmax(500px, 1.35fr) minmax(300px, 0.9fr);
  gap: 28px;
  align-items: stretch;
  margin-top: 40px;
}

.deliver-list {
  display: grid;
  gap: 18px;
}

.deliver-list article {
  position: relative;
  padding-left: 36px;
}

.deliver-list article::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 22px;
  height: 22px;
  border: 2px solid var(--coral);
  border-radius: 50%;
}

.deliver-list article.is-featured {
  padding: 18px 18px 18px 44px;
  border: 1px solid color-mix(in srgb, var(--green) 42%, var(--line));
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--green-soft) 42%, var(--paper));
}

.deliver-list article.is-featured::before {
  left: 15px;
  top: 23px;
  border-color: var(--green);
  background: var(--green-soft);
}

.deliver-list article.is-featured strong {
  color: var(--green);
}

.deliver-list strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1rem;
}

.deliver-list span {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.architecture-card,
.deliver-checklist {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  box-shadow: var(--soft-shadow);
}

.architecture-card h3,
.deliver-checklist h3 {
  margin-bottom: 18px;
  color: var(--ink);
  font-size: 1.05rem;
}

.arch-flow {
  display: grid;
  grid-template-columns: 70px 28px 110px 28px 1fr 28px 132px;
  align-items: center;
  gap: 0;
  min-height: 260px;
}

.arch-flow i {
  height: 2px;
  background: var(--ink);
}

.clients,
.gateway,
.services,
.ai-box {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper);
}

.clients,
.ai-box {
  display: grid;
  gap: 10px;
  padding: 12px;
}

.clients span,
.ai-box span {
  display: grid;
  place-items: center;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 700;
}

.gateway {
  display: grid;
  place-items: center;
  min-height: 120px;
  padding: 14px;
  background:
    linear-gradient(45deg, rgba(10, 139, 130, 0.12) 25%, transparent 25%, transparent 50%, rgba(10, 139, 130, 0.12) 50%, rgba(10, 139, 130, 0.12) 75%, transparent 75%),
    var(--teal-soft);
  background-size: 10px 10px;
  color: var(--ink);
  text-align: center;
  font-size: 0.86rem;
  font-weight: 850;
}

.services {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 12px;
}

.services span {
  min-height: 58px;
  display: grid;
  place-items: center;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  text-align: center;
  font-size: 0.78rem;
  font-weight: 750;
}

.services em {
  color: var(--muted);
  font-style: normal;
  font-weight: 500;
}

.infra-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.infra-row span {
  display: grid;
  place-items: center;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper);
  font-size: 0.86rem;
  font-weight: 750;
}

.deliver-checklist {
  display: grid;
  align-content: start;
  gap: 10px;
}

.deliver-checklist h3 {
  color: var(--coral);
  margin-bottom: 4px;
}

.deliver-checklist label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--ink-2);
  font-size: 0.9rem;
  line-height: 1.4;
}

.deliver-checklist label span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.deliver-checklist input {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 2px;
  accent-color: var(--teal);
}

.compose-log {
  margin-top: 14px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper);
}

.compose-log code,
.compose-log span {
  display: block;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.65;
}

.compose-log span {
  color: var(--green);
}

.notes-section {
  position: relative;
  padding: 72px 0;
  border-top: 1px solid var(--line);
}

.note-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-top: 36px;
}

.note-grid article {
  min-height: 260px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  box-shadow: var(--soft-shadow);
}

.note-grid span {
  display: inline-block;
  margin-bottom: 24px;
  color: var(--teal);
  font-family: var(--mono);
  font-size: 0.82rem;
}

.note-grid h3 {
  margin-bottom: 18px;
  font-size: 1.28rem;
  line-height: 1.55;
  font-weight: 850;
}

.note-grid p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

.about-section {
  width: 100%;
  padding: 0 0 58px;
}

.about-card {
  display: grid;
  grid-template-columns: 124px minmax(280px, 1.4fr) minmax(150px, 0.55fr) minmax(230px, 0.7fr) minmax(260px, 0.85fr);
  gap: 32px;
  align-items: center;
  width: min(var(--max), calc(100vw - 48px));
  margin: 0 auto;
  padding: 30px 38px;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 20% 40%, rgba(10, 139, 130, 0.08) 1px, transparent 1px),
    var(--paper);
  background-size: 18px 18px, auto;
  box-shadow: var(--soft-shadow);
}

.about-card > img {
  width: 112px;
  height: 112px;
  border-radius: 50%;
  object-fit: cover;
  border: 8px solid var(--paper);
  box-shadow: 0 0 0 1px var(--line), var(--soft-shadow);
}

.about-card h2 {
  width: fit-content;
  margin-bottom: 14px;
  font-family: "Kaiti SC", "STKaiti", "KaiTi", cursive;
  font-size: 1.7rem;
  font-weight: 700;
  border-bottom: 2px solid var(--teal);
}

.about-card p {
  color: var(--ink-2);
  font-size: 1rem;
  line-height: 1.85;
}

.about-card a {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 14px;
  align-items: center;
  min-height: 74px;
}

.about-card a svg {
  width: 38px;
  height: 38px;
  fill: none;
  stroke: var(--ink);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.about-card a:first-of-type svg {
  fill: var(--ink);
  stroke: none;
}

.about-card a span {
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.5;
}

.about-card a em {
  color: var(--teal);
  font-style: normal;
  font-weight: 650;
}

.motto-box {
  display: grid;
  gap: 8px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
}

.motto-box code,
.motto-box span,
.motto-box strong {
  font-family: var(--mono);
  font-size: 0.82rem;
}

.motto-box strong {
  color: var(--coral);
  line-height: 1.6;
}

.site-record {
  width: min(var(--max), calc(100vw - 48px));
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 10px 18px;
  margin: 16px auto 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.site-record span,
.site-record a {
  min-height: 28px;
  display: inline-flex;
  align-items: center;
}

.site-record a {
  gap: 7px;
  color: var(--teal);
  font-weight: 650;
  transition: color 180ms ease;
}

.site-record a:hover {
  color: var(--ink);
}

.site-record svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 30;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper);
  color: var(--ink);
  box-shadow: var(--soft-shadow);
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.back-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-top svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

@keyframes spin {
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

@keyframes drawLine {
  to {
    stroke-dashoffset: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}

@media (max-width: 1320px) {
  .site-header {
    grid-template-columns: minmax(190px, 1fr) auto auto;
    padding: 0 28px;
  }

  .nav-links {
    gap: 28px;
  }

  .hero {
    grid-template-columns: minmax(380px, 0.9fr) minmax(500px, 1.1fr);
  }

  .hero h1 {
    font-size: 5.6rem;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .ring-one {
    width: 500px;
    height: 500px;
  }

  .ring-two {
    width: 590px;
    height: 590px;
  }

  .ring-three {
    width: 680px;
    height: 680px;
  }

  .avatar-shell {
    width: 390px;
    height: 390px;
  }

  .map-card {
    width: 250px;
  }

  .lab-section,
  .deliver-grid {
    grid-template-columns: 1fr;
  }

  .principle-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 16px;
  }

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

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

  .about-card {
    grid-template-columns: 104px minmax(260px, 1.2fr) repeat(2, minmax(160px, 0.5fr));
  }

  .motto-box {
    grid-column: 2 / -1;
  }
}

@media (max-width: 1530px) {
  .ability-map {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    min-height: 0;
  }

  .connector-map,
  .core-orb {
    display: none;
  }

  .map-card,
  .map-card.agent,
  .map-card.voice,
  .map-card.ocr,
  .map-card.api,
  .map-card.vision,
  .map-card.ops,
  .map-card.edge,
  .map-card.deploy {
    position: relative;
    inset: auto;
    width: auto;
  }
}

@media (max-width: 1060px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .nav-links {
    position: fixed;
    inset: var(--header-height) 0 auto 0;
    display: grid;
    gap: 0;
    padding: 12px 24px 24px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    transform: translateY(-120%);
    transition: transform 220ms ease;
  }

  .menu-open .nav-links {
    transform: translateY(0);
  }

  .nav-links a {
    padding: 18px 0;
    border-bottom: 1px solid var(--line);
  }

  .nav-links a::after {
    bottom: -1px;
  }

  .menu-button {
    display: grid;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 52px;
  }

  .hero-orbit {
    min-height: 590px;
    order: -1;
  }

  .ability-map {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    min-height: 0;
  }

  .connector-map,
  .core-orb {
    display: none;
  }

  .map-card,
  .map-card.agent,
  .map-card.voice,
  .map-card.ocr,
  .map-card.api,
  .map-card.vision,
  .map-card.ops,
  .map-card.edge,
  .map-card.deploy {
    position: relative;
    inset: auto;
    width: auto;
  }

  .stack-rail,
  .stack-rail ul {
    grid-template-columns: 1fr;
  }

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

  .arch-flow {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .arch-flow i {
    width: 2px;
    height: 22px;
    margin: 0 auto;
  }

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

  .about-card {
    grid-template-columns: 96px 1fr;
  }

  .about-card a,
  .motto-box {
    grid-column: 1 / -1;
  }
}

@media (max-width: 720px) {
  :root {
    --header-height: 66px;
  }

  .site-header {
    padding: 0 16px;
    gap: 14px;
  }

  .brand {
    gap: 10px;
    font-size: 1.08rem;
  }

  .prompt-mark,
  .icon-link,
  .icon-button,
  .menu-button {
    width: 38px;
    height: 38px;
  }

  .prompt-mark svg {
    width: 28px;
    height: 28px;
  }

  .section-snap {
    width: min(100% - 28px, var(--max));
  }

  .hero {
    padding: 36px 0 56px;
  }

  .hero h1 {
    font-size: 4rem;
    line-height: 1;
  }

  .hero-title {
    margin-top: 30px;
    font-size: 1.7rem;
  }

  .signal-row {
    margin-top: 30px;
    gap: 12px 16px;
  }

  .signal-row span {
    font-size: 0.9rem;
  }

  .hero-actions {
    margin-top: 34px;
  }

  .button {
    width: 100%;
    min-width: 0;
    min-height: 60px;
    font-size: 1rem;
  }

  .hero-orbit {
    min-height: 460px;
  }

  .ring-one {
    width: 330px;
    height: 330px;
  }

  .ring-two {
    width: 390px;
    height: 390px;
  }

  .ring-three {
    width: 448px;
    height: 448px;
  }

  .avatar-shell {
    width: 258px;
    height: 258px;
    padding: 8px;
  }

  .orbit-node {
    min-width: 130px;
    padding: 9px;
    gap: 5px 8px;
  }

  .node-icon {
    width: 38px;
    height: 38px;
  }

  .node-icon svg {
    width: 18px;
    height: 18px;
  }

  .orbit-node strong {
    font-size: 0.78rem;
  }

  .orbit-node em {
    font-size: 0.68rem;
  }

  .node-agent {
    left: 50%;
    top: 0;
    transform: translateX(-50%);
  }

  .node-voice {
    left: 0;
    top: 18%;
  }

  .node-video {
    right: 0;
    top: 18%;
  }

  .node-tools {
    right: 0;
    top: 68%;
  }

  .node-edge {
    left: 0;
    bottom: 2%;
  }

  .system-log {
    display: none;
  }

  .section-heading h2,
  .section-heading.compact h2 {
    font-size: 2.1rem;
  }

  .section-heading.compact h2::before {
    height: 31px;
  }

  .hand-note {
    font-size: 1.24rem;
  }

  .ability-section,
  .lab-section,
  .deliver-section,
  .notes-section {
    padding-top: 56px;
    padding-bottom: 48px;
  }

  .ability-map,
  .note-grid {
    grid-template-columns: 1fr;
  }

  .map-card {
    padding: 16px;
  }

  .principle-list {
    gap: 14px;
    margin-top: 28px;
  }

  .principle-list article {
    grid-template-columns: 34px 1fr;
    gap: 12px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--paper) 88%, transparent);
  }

  .principle-list svg {
    width: 34px;
    height: 34px;
    padding: 5px;
    border-width: 1.6px;
  }

  .principle-list strong {
    margin-bottom: 3px;
    font-size: 0.96rem;
  }

  .principle-list span {
    font-size: 0.86rem;
    line-height: 1.45;
  }

  .process-board {
    min-height: 0;
    padding: 22px 16px 18px;
    box-shadow: var(--soft-shadow);
  }

  .binder-holes {
    display: none;
  }

  .process-board > p {
    margin-bottom: 18px;
    font-size: 1.12rem;
    text-align: left;
  }

  .process-steps {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .process-steps::after {
    display: none;
  }

  .process-steps span {
    grid-template-columns: 38px 1fr auto;
    align-items: center;
    gap: 10px;
    justify-items: start;
    min-height: 48px;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: color-mix(in srgb, var(--paper) 88%, transparent);
    text-align: left;
  }

  .process-steps i {
    width: 34px;
    height: 34px;
    border-width: 1.7px;
  }

  .process-steps i::before {
    width: 18px;
    height: 18px;
    border-width: 2px;
  }

  .process-steps .bulb::before {
    width: 13px;
    height: 19px;
  }

  .process-steps .window::before {
    width: 20px;
    height: 15px;
  }

  .process-steps .wrench::before {
    width: 20px;
    height: 6px;
  }

  .process-steps .chart::before {
    width: 20px;
    height: 16px;
  }

  .process-steps b {
    font-size: 0.92rem;
  }

  .process-steps em {
    grid-column: auto;
    justify-self: end;
    font-size: 0.72rem;
  }

  .make-card {
    margin-top: 18px;
    padding: 16px;
  }

  .make-card code,
  .make-card span {
    font-size: 0.78rem;
    line-height: 1.55;
  }

  .make-card span {
    grid-template-columns: 96px 1fr;
    gap: 10px;
    align-items: baseline;
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px dashed var(--line);
  }

  .protocol-panel {
    min-height: 0;
    padding: 18px;
  }

  .protocol-panel h3,
  .protocol-panel code {
    margin-bottom: 12px;
  }

  .protocol-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin-bottom: 14px;
    padding-bottom: 14px;
  }

  .protocol-track span {
    grid-template-columns: 1fr;
    gap: 3px;
    min-height: 58px;
    padding: 9px;
  }

  .protocol-list {
    gap: 10px;
  }

  .protocol-list p {
    padding-left: 12px;
  }

  .handoff-note {
    margin-top: 14px;
    padding: 12px;
  }

  .deliver-grid {
    gap: 22px;
  }

  .services,
  .infra-row {
    grid-template-columns: 1fr;
  }

  .architecture-card,
  .deliver-checklist,
  .note-grid article {
    padding: 20px;
  }

  .about-card {
    width: min(100% - 28px, var(--max));
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 24px;
  }

  .about-card > img {
    width: 104px;
    height: 104px;
  }

  .about-card h2 {
    font-size: 1.35rem;
  }

  .about-card a,
  .motto-box {
    grid-column: auto;
  }

  .site-record {
    width: min(100% - 28px, var(--max));
    margin-top: 14px;
    gap: 4px 12px;
    font-size: 0.78rem;
    text-align: center;
  }

  .site-record span,
  .site-record a {
    min-height: 24px;
  }

  .back-top {
    right: 12px;
    bottom: 12px;
    width: 40px;
    height: 40px;
    opacity: 0.92;
  }

  .back-top svg {
    width: 18px;
    height: 18px;
  }
}