/* ============================================================
   诸子智云 · 企业备案展示站
   ============================================================ */

:root {
  --hue-brand: 230;
  --hue-accent: 42;

  --bg: oklch(0.97 0.008 var(--hue-brand));
  --bg-alt: oklch(0.94 0.012 var(--hue-brand));
  --bg-card: oklch(0.99 0.005 var(--hue-brand));
  --bg-dark: oklch(0.22 0.04 var(--hue-brand));
  --bg-dark-2: oklch(0.28 0.05 var(--hue-brand));

  --ink: oklch(0.22 0.03 var(--hue-brand));
  --ink-dim: oklch(0.45 0.025 var(--hue-brand));
  --ink-faint: oklch(0.62 0.015 var(--hue-brand));
  --ink-on-dark: oklch(0.95 0.01 var(--hue-brand));

  --brand: oklch(0.45 0.14 var(--hue-brand));
  --brand-light: oklch(0.55 0.12 var(--hue-brand));
  --accent: oklch(0.72 0.14 var(--hue-accent));
  --accent-deep: oklch(0.58 0.12 var(--hue-accent));
  --teal: oklch(0.62 0.1 195);

  --border: oklch(0.88 0.015 var(--hue-brand));
  --border-strong: oklch(0.78 0.025 var(--hue-brand));
  --shadow: 0 4px 24px oklch(0.3 0.04 var(--hue-brand) / 0.08);
  --shadow-lg: 0 12px 48px oklch(0.3 0.04 var(--hue-brand) / 0.12);
  --radius: 16px;
  --radius-sm: 10px;

  --f-sans: 'DM Sans', system-ui, sans-serif;
  --f-serif: 'Noto Serif SC', 'Songti SC', serif;
  --f-mono: 'JetBrains Mono', monospace;

  --container: 1120px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--f-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  width: min(var(--container), 100% - 48px);
  margin-inline: auto;
}

/* —— Background —— */
.bg-mesh {
  position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(ellipse 80% 60% at 10% 0%, oklch(0.75 0.08 var(--hue-brand) / 0.18), transparent 60%),
    radial-gradient(ellipse 60% 50% at 90% 10%, oklch(0.8 0.1 var(--hue-accent) / 0.12), transparent 55%),
    radial-gradient(ellipse 50% 40% at 50% 100%, oklch(0.7 0.06 195 / 0.1), transparent 50%);
}
.bg-grid {
  position: fixed; inset: 0; z-index: -1; opacity: 0.35;
  background-image:
    linear-gradient(oklch(0.5 0.02 var(--hue-brand) / 0.06) 1px, transparent 1px),
    linear-gradient(90deg, oklch(0.5 0.02 var(--hue-brand) / 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black 0%, transparent 80%);
}

/* —— Buttons —— */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 24px;
  font-family: var(--f-sans); font-size: 14px; font-weight: 600;
  border-radius: 999px;
  border: 1.5px solid transparent;
  transition: transform .2s, box-shadow .2s, background .2s;
  cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.btn--sm { padding: 8px 18px; font-size: 13px; }
.btn--primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-light));
  color: var(--ink-on-dark);
  box-shadow: 0 4px 16px oklch(0.4 0.12 var(--hue-brand) / 0.3);
}
.btn--primary:hover { box-shadow: 0 6px 24px oklch(0.4 0.12 var(--hue-brand) / 0.4); }
.btn--outline {
  background: var(--bg-card);
  border-color: var(--border-strong);
  color: var(--brand);
}
.btn--outline:hover { border-color: var(--brand); background: oklch(0.98 0.01 var(--hue-brand)); }

/* —— Header —— */
.header {
  position: sticky; top: 0; z-index: 100;
  background: oklch(0.98 0.008 var(--hue-brand) / 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px; gap: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand__icon { color: var(--brand); }
.brand__text { display: flex; flex-direction: column; line-height: 1.2; }
.brand__text b { font-size: 17px; font-weight: 700; color: var(--ink); }
.brand__text small { font-size: 11px; color: var(--ink-dim); letter-spacing: .08em; }
.nav { display: flex; gap: 28px; }
.nav a {
  font-size: 14px; font-weight: 500; color: var(--ink-dim);
  transition: color .2s;
}
.nav a:hover { color: var(--brand); }

/* —— Hero —— */
.hero {
  padding: 80px 0 64px;
  position: relative;
}
.hero__inner { max-width: 800px; }
.hero__badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px 6px 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px; font-weight: 500; color: var(--brand);
  margin-bottom: 28px;
  box-shadow: var(--shadow);
}
.pulse {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 0 oklch(0.62 0.1 195 / 0.5);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 oklch(0.62 0.1 195 / 0.5); }
  70% { box-shadow: 0 0 0 8px oklch(0.62 0.1 195 / 0); }
  100% { box-shadow: 0 0 0 0 oklch(0.62 0.1 195 / 0); }
}
.hero__title {
  font-family: var(--f-serif);
  font-size: clamp(36px, 5.5vw, 56px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.gradient-text {
  background: linear-gradient(135deg, var(--brand), var(--accent-deep));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__sub {
  font-size: 17px; color: var(--ink-dim);
  max-width: 640px; margin-bottom: 32px;
}
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 48px; }
.hero__cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px 16px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform .25s, box-shadow .25s;
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.stat-card--accent {
  background: linear-gradient(135deg, var(--bg-dark), var(--bg-dark-2));
  border-color: transparent;
  color: var(--ink-on-dark);
}
.stat-card--accent .stat-card__label { color: oklch(0.8 0.04 var(--hue-brand)); }
.stat-card__num {
  display: block;
  font-family: var(--f-mono);
  font-size: 15px; font-weight: 600;
  margin-bottom: 4px;
}
.stat-card__label { font-size: 12px; color: var(--ink-faint); }

/* —— Sections —— */
.section { padding: 88px 0; }
.section--alt { background: var(--bg-alt); }
.section--contact { background: linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%); }
.section__head { margin-bottom: 48px; }
.section__tag {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 11px; font-weight: 500;
  letter-spacing: .2em;
  color: var(--accent-deep);
  margin-bottom: 12px;
}
.section__title {
  font-family: var(--f-serif);
  font-size: clamp(28px, 3.5vw, 38px);
  font-weight: 700;
  margin-bottom: 10px;
}
.section__lead { font-size: 16px; color: var(--ink-dim); font-weight: 500; }
.section__desc { font-size: 15px; color: var(--ink-dim); }
.section__en {
  font-family: var(--f-mono);
  font-size: 12px; color: var(--ink-faint);
  letter-spacing: .06em; margin-top: 6px;
}

/* —— About —— */
.about-layout { display: flex; flex-direction: column; gap: 28px; }
.content-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 36px;
  box-shadow: var(--shadow);
}
.content-card--featured {
  border-left: 4px solid var(--brand);
}
.content-card__icon {
  font-family: var(--f-mono);
  font-size: 12px; font-weight: 600;
  color: var(--accent-deep);
  margin-bottom: 12px;
}
.content-card h3 {
  font-family: var(--f-serif);
  font-size: 20px; font-weight: 600;
  margin-bottom: 14px;
}
.content-card p { color: var(--ink-dim); font-size: 15px; line-height: 1.8; }

.mission-block {
  position: relative;
  background: linear-gradient(135deg, var(--bg-dark) 0%, oklch(0.3 0.06 var(--hue-brand)) 100%);
  border-radius: var(--radius);
  padding: 40px 44px 36px;
  color: var(--ink-on-dark);
  overflow: hidden;
}
.mission-block__quote {
  position: absolute; top: -10px; left: 24px;
  font-family: var(--f-serif);
  font-size: 120px; line-height: 1;
  color: oklch(0.95 0.02 var(--hue-accent) / 0.12);
  pointer-events: none;
}
.mission-block p {
  position: relative;
  font-family: var(--f-serif);
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 500;
  line-height: 1.75;
  margin-bottom: 16px;
}
.mission-block footer {
  position: relative;
  font-size: 13px;
  color: oklch(0.75 0.03 var(--hue-brand));
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.feature-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px 20px;
  transition: border-color .2s, box-shadow .2s;
}
.feature-item:hover {
  border-color: var(--brand-light);
  box-shadow: var(--shadow);
}
.feature-item__icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  background: oklch(0.94 0.02 var(--hue-brand));
  border-radius: 10px;
  color: var(--brand);
  margin-bottom: 14px;
}
.feature-item h4 { font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.feature-item p { font-size: 13px; color: var(--ink-dim); line-height: 1.6; }

/* —— Domains —— */
.domain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.domain-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: transform .25s, box-shadow .25s;
}
.domain-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.domain-card__icon { font-size: 32px; display: block; margin-bottom: 12px; }
.domain-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.domain-card p { font-size: 13px; color: var(--ink-dim); }
.domain-card--wide {
  grid-column: span 3;
  display: flex; flex-direction: column; align-items: center; gap: 16px;
  background: linear-gradient(135deg, oklch(0.96 0.015 var(--hue-brand)), oklch(0.94 0.02 var(--hue-accent) / 0.3));
  border-color: var(--border-strong);
}
.lifecycle {
  display: flex; align-items: center; gap: 0;
}
.lifecycle__step {
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  font-family: var(--f-serif);
  font-size: 20px; font-weight: 700;
  background: var(--bg-card);
  border: 2px solid var(--border-strong);
  color: var(--ink-faint);
}
.lifecycle__step--active {
  background: var(--brand);
  border-color: var(--brand);
  color: var(--ink-on-dark);
  box-shadow: 0 4px 16px oklch(0.4 0.12 var(--hue-brand) / 0.35);
}
.lifecycle__line {
  width: 48px; height: 2px;
  background: linear-gradient(90deg, var(--brand), var(--accent));
}

/* —— Product —— */
.product-hero {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 40px;
}
.product-hero__desc {
  font-size: 15px; color: var(--ink-dim);
  line-height: 1.85; margin-bottom: 16px;
}
.product-hero__desc:last-child { margin-bottom: 0; }

.orbit {
  position: relative;
  width: 240px; height: 240px;
  margin: 0 auto;
}
.orbit__core {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 64px; height: 64px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--brand), var(--brand-light));
  border-radius: 50%;
  color: var(--ink-on-dark);
  font-family: var(--f-mono); font-weight: 700; font-size: 18px;
  box-shadow: 0 0 32px oklch(0.45 0.14 var(--hue-brand) / 0.4);
  z-index: 2;
}
.orbit__ring {
  position: absolute; top: 50%; left: 50%;
  border: 1.5px dashed oklch(0.6 0.06 var(--hue-brand) / 0.4);
  border-radius: 50%;
  animation: spin 20s linear infinite;
}
.orbit__ring span {
  position: absolute;
  font-size: 11px; font-weight: 600;
  color: var(--brand);
  background: var(--bg-card);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  white-space: nowrap;
}
.orbit__ring--1 { width: 140px; height: 140px; margin: -70px 0 0 -70px; }
.orbit__ring--1 span { top: -14px; left: 50%; transform: translateX(-50%); }
.orbit__ring--2 { width: 190px; height: 190px; margin: -95px 0 0 -95px; animation-direction: reverse; animation-duration: 28s; }
.orbit__ring--2 span { bottom: -14px; left: 50%; transform: translateX(-50%); }
.orbit__ring--3 { width: 240px; height: 240px; margin: -120px 0 0 -120px; animation-duration: 36s; }
.orbit__ring--3 span { top: 50%; right: -20px; transform: translateY(-50%); }
@keyframes spin { to { transform: rotate(360deg); } }

.capability-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}
.capability-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 28px 24px;
  transition: box-shadow .25s;
}
.capability-card:hover { box-shadow: var(--shadow-lg); }
.capability-card--highlight {
  background: linear-gradient(135deg, oklch(0.97 0.02 var(--hue-accent) / 0.5), var(--bg-card));
  border-color: oklch(0.75 0.08 var(--hue-accent) / 0.4);
}
.capability-card__num {
  font-family: var(--f-mono);
  font-size: 11px; font-weight: 600;
  color: var(--accent-deep);
  margin-bottom: 10px;
}
.capability-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; }
.capability-card p { font-size: 14px; color: var(--ink-dim); line-height: 1.65; }

.compare-bar {
  display: flex; align-items: stretch; gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px;
  box-shadow: var(--shadow);
}
.compare-bar__item {
  flex: 1;
  padding: 20px 24px;
  border-radius: var(--radius-sm);
  display: flex; flex-direction: column; gap: 6px;
}
.compare-bar__item--old {
  background: oklch(0.95 0.005 var(--hue-brand));
  color: var(--ink-faint);
  text-decoration: line-through;
  text-decoration-color: oklch(0.7 0.02 var(--hue-brand) / 0.5);
}
.compare-bar__item--new {
  background: linear-gradient(135deg, var(--bg-dark), var(--bg-dark-2));
  color: var(--ink-on-dark);
}
.compare-bar__label {
  font-family: var(--f-mono);
  font-size: 11px; font-weight: 600;
  letter-spacing: .1em;
}
.compare-bar__item span:last-child { font-size: 14px; }
.compare-bar__arrow {
  display: flex; align-items: center;
  font-size: 24px; color: var(--accent-deep);
  padding: 0 4px;
}

/* —— Contact —— */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  transition: transform .25s, box-shadow .25s;
}
.contact-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.contact-card--main {
  grid-column: span 3;
  background: linear-gradient(135deg, var(--bg-dark), var(--bg-dark-2));
  color: var(--ink-on-dark);
  border-color: transparent;
}
.contact-card--main .contact-card__label { color: oklch(0.75 0.04 var(--hue-brand)); }
.contact-card__label {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 600;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 10px;
}
.contact-card__value {
  font-size: 15px; line-height: 1.6;
}
.contact-card--main .contact-card__value {
  font-family: var(--f-serif);
  font-size: 22px; font-weight: 600;
}
.contact-card__phone {
  font-family: var(--f-mono);
  font-size: 22px; font-weight: 600;
  color: var(--brand);
  transition: color .2s;
}
.contact-card__phone:hover { color: var(--accent-deep); }
.contact-card__email {
  font-family: var(--f-mono);
  font-size: 16px; font-weight: 500;
  color: var(--brand);
  word-break: break-all;
  transition: color .2s;
}
.contact-card__email:hover { color: var(--accent-deep); }

.link-accent {
  color: var(--brand);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.link-accent:hover { color: var(--accent-deep); }

/* —— Name origin —— */
.name-origin {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.name-origin__item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px 20px;
  text-align: center;
}
.name-origin__item--en {
  background: linear-gradient(135deg, oklch(0.96 0.02 var(--hue-accent) / 0.4), var(--bg-card));
  border-color: oklch(0.75 0.06 var(--hue-accent) / 0.35);
}
.name-origin__char {
  display: block;
  font-family: var(--f-serif);
  font-size: 22px; font-weight: 700;
  color: var(--brand);
  margin-bottom: 10px;
}
.name-origin__item p {
  font-size: 13px; color: var(--ink-dim); line-height: 1.6;
}
.name-origin__item strong { color: var(--ink); }

/* —— Location strip —— */
.location-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.location-strip__item {
  display: flex; flex-direction: column; gap: 4px;
  background: linear-gradient(135deg, var(--bg-dark), var(--bg-dark-2));
  color: var(--ink-on-dark);
  border-radius: var(--radius-sm);
  padding: 20px 18px;
  text-align: center;
}
.location-strip__city {
  font-family: var(--f-serif);
  font-size: 18px; font-weight: 600;
}
.location-strip__item span:last-child {
  font-size: 12px;
  color: oklch(0.75 0.03 var(--hue-brand));
}

/* —— Prose —— */
.prose {
  display: flex; flex-direction: column; gap: 16px;
  max-width: 820px;
}
.prose p {
  font-size: 15px; color: var(--ink-dim); line-height: 1.85;
}

/* —— Product highlight —— */
.product-hero__desc--highlight {
  padding: 16px 20px;
  background: oklch(0.96 0.015 var(--hue-brand));
  border-left: 3px solid var(--accent-deep);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--ink) !important;
  font-weight: 500;
}

/* —— Tech grid —— */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.tech-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 28px 24px;
  box-shadow: var(--shadow);
  transition: box-shadow .25s;
}
.tech-card:hover { box-shadow: var(--shadow-lg); }
.tech-card--wide { grid-column: span 2; }
.tech-card__num {
  font-family: var(--f-mono);
  font-size: 11px; font-weight: 600;
  color: var(--accent-deep);
  margin-bottom: 10px;
}
.tech-card h3 {
  font-size: 17px; font-weight: 600;
  margin-bottom: 12px;
}
.tech-card p {
  font-size: 14px; color: var(--ink-dim); line-height: 1.75;
}
.tech-card code {
  font-family: var(--f-mono);
  font-size: 12px;
  padding: 2px 6px;
  background: oklch(0.94 0.02 var(--hue-brand));
  border-radius: 4px;
  color: var(--brand);
}

/* —— Lifecycle grid —— */
.lifecycle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.lifecycle-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  transition: transform .25s, box-shadow .25s;
}
.lifecycle-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.lifecycle-card--highlight {
  background: linear-gradient(160deg, var(--bg-dark) 0%, var(--bg-dark-2) 100%);
  color: var(--ink-on-dark);
  border-color: transparent;
}
.lifecycle-card--highlight p { color: oklch(0.8 0.02 var(--hue-brand)); }
.lifecycle-card__badge {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--f-serif);
  font-size: 22px; font-weight: 700;
  background: var(--brand);
  color: var(--ink-on-dark);
  border-radius: 50%;
  margin-bottom: 16px;
  box-shadow: 0 4px 16px oklch(0.4 0.12 var(--hue-brand) / 0.3);
}
.lifecycle-card--highlight .lifecycle-card__badge {
  background: var(--accent);
  color: var(--ink);
}
.lifecycle-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 12px; }
.lifecycle-card p { font-size: 14px; color: var(--ink-dim); line-height: 1.7; }

/* —— Domain table —— */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  background: var(--bg-card);
}
.domain-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.domain-table th,
.domain-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.domain-table th {
  background: oklch(0.96 0.012 var(--hue-brand));
  font-size: 12px; font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--ink-dim);
}
.domain-table tbody tr:last-child td { border-bottom: none; }
.domain-table tbody tr:hover { background: oklch(0.98 0.008 var(--hue-brand)); }
.domain-table td:first-child { width: 14%; white-space: nowrap; }
.domain-table td:last-child { color: var(--ink-dim); }

/* —— Developer —— */
.dev-layout { max-width: 820px; }
.dev-intro {
  font-size: 15px; color: var(--ink-dim); line-height: 1.85;
  margin-bottom: 24px;
}
.dev-chips {
  display: flex; flex-wrap: wrap; gap: 10px;
}
.dev-chip {
  padding: 8px 16px;
  font-family: var(--f-mono);
  font-size: 12px; font-weight: 500;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--brand);
  transition: background .2s, border-color .2s;
}
.dev-chip:hover {
  background: oklch(0.94 0.02 var(--hue-brand));
  border-color: var(--brand-light);
}

/* —— Vision —— */
.section--vision {
  background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
}
.vision-layout { max-width: 820px; }
.vision-layout > p {
  font-size: 15px; color: var(--ink-dim); line-height: 1.85;
  margin-bottom: 24px;
}
.vision-quote {
  font-family: var(--f-serif);
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 500;
  line-height: 1.75;
  color: var(--ink);
  padding: 28px 32px;
  background: linear-gradient(135deg, var(--bg-dark), var(--bg-dark-2));
  color: var(--ink-on-dark);
  border-radius: var(--radius);
  margin-bottom: 28px;
  border-left: 4px solid var(--accent);
}
.vision-roadmap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.vision-roadmap__item {
  padding: 14px 12px;
  text-align: center;
  font-size: 12px; font-weight: 500;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--ink-dim);
  transition: border-color .2s, color .2s;
}
.vision-roadmap__item:hover {
  border-color: var(--brand-light);
  color: var(--brand);
}

.map-card {
  display: flex; align-items: center; gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  box-shadow: var(--shadow);
}
.map-card__pin { color: var(--brand); flex-shrink: 0; }
.map-card strong { display: block; font-size: 15px; margin-bottom: 4px; }
.map-card p { font-size: 14px; color: var(--ink-dim); }

/* —— Footer —— */
.footer {
  background: var(--bg-dark);
  color: oklch(0.8 0.02 var(--hue-brand));
  padding: 48px 0 32px;
}
.footer__inner { text-align: center; }
.footer__brand {
  margin-bottom: 24px;
}
.footer__brand b { font-size: 18px; color: var(--ink-on-dark); }
.footer__brand p { font-size: 13px; margin-top: 4px; }
.footer__legal {
  font-size: 14px; line-height: 1.9;
  margin-bottom: 16px;
  padding-bottom: 20px;
  border-bottom: 1px solid oklch(0.4 0.03 var(--hue-brand) / 0.5);
}
.footer__legal a { color: var(--accent); }
.footer__legal a:hover { text-decoration: underline; }
.footer__beian { margin-bottom: 16px; }
.footer__beian a {
  font-family: var(--f-mono);
  font-size: 13px;
  color: oklch(0.7 0.03 var(--hue-brand));
  transition: color .2s;
}
.footer__beian a:hover { color: var(--accent); }
.footer__copy { font-size: 12px; color: oklch(0.55 0.02 var(--hue-brand)); }

/* —— Reveal —— */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* —— Responsive —— */
@media (max-width: 960px) {
  .nav { display: none; }
  .hero__cards { grid-template-columns: repeat(2, 1fr); }
  .name-origin { grid-template-columns: 1fr; }
  .location-strip { grid-template-columns: 1fr; }
  .product-hero { grid-template-columns: 1fr; }
  .orbit { margin-bottom: 16px; }
  .tech-grid { grid-template-columns: 1fr; }
  .tech-card--wide { grid-column: span 1; }
  .lifecycle-grid { grid-template-columns: 1fr; }
  .vision-roadmap { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-card--main { grid-column: span 1; }
}

@media (max-width: 600px) {
  .container { width: min(var(--container), 100% - 32px); }
  .hero { padding: 56px 0 48px; }
  .section { padding: 64px 0; }
  .hero__cards { grid-template-columns: 1fr 1fr; }
  .mission-block { padding: 32px 28px 28px; }
  .content-card { padding: 24px; }
  .vision-roadmap { grid-template-columns: 1fr; }
  .domain-table { font-size: 13px; }
  .domain-table th, .domain-table td { padding: 12px 14px; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { transition: none; opacity: 1; transform: none; }
  .orbit__ring { animation: none; }
  .pulse { animation: none; }
}