/* ============ FONTS (self-hosted, China-friendly) ============ */
@font-face {
  font-family: "Inter";
  src: url("/fonts/InterVariable.woff2") format("woff2-variations");
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("/fonts/JetBrainsMono.woff2") format("woff2-variations");
  font-weight: 400 500;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #FAFAF8;
  --bg-soft: #F2F2EE;
  --ink: #0A0A0B;
  --ink-2: #2A2A2D;
  --ink-3: #5A5A60;
  --ink-4: #8A8A90;
  --line: #E4E4DF;
  --line-2: #D6D6D0;
  --accent: #0052FF;
  --accent-soft: rgba(0, 82, 255, 0.08);
  --max: 1240px;
  --pad: clamp(20px, 4vw, 48px);
  --font-sans: "Inter", -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.9s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.9s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}
.reveal.delay-1 { transition-delay: 0.08s; }
.reveal.delay-2 { transition-delay: 0.16s; }
.reveal.delay-3 { transition-delay: 0.24s; }
.reveal.delay-4 { transition-delay: 0.32s; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
::selection { background: var(--accent); color: #fff; }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

.hero-title .char {
  display: inline-block;
  opacity: 0;
  transform: translateY(40px);
  animation: charIn 0.9s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}
@keyframes charIn {
  to { opacity: 1; transform: translateY(0); }
}

/* ============ LANGUAGE TOGGLE ============ */
[data-en] { display: none; }
html[lang="en"] [data-zh] { display: none; }
html[lang="en"] [data-en] { display: inline; }
html[lang="en"] [data-en].block { display: block; }
html[lang="en"] [data-en].flex { display: flex; }

h1.hero-title[data-en] { display: none; }
html[lang="en"] h1.hero-title[data-zh] { display: none; }
html[lang="en"] h1.hero-title[data-en] { display: block; }

div.hero-subtitle[data-en],
p.hero-desc[data-en],
p.about-lede[data-en],
p.biz-desc[data-en],
p.contact-lead[data-en],
p.roadmap-text[data-en],
span.section-title-en[data-en],
div.v[data-en],
h3.biz-name[data-en] { display: none; }
html[lang="en"] div.hero-subtitle[data-zh],
html[lang="en"] p.hero-desc[data-zh],
html[lang="en"] p.about-lede[data-zh],
html[lang="en"] p.biz-desc[data-zh],
html[lang="en"] p.contact-lead[data-zh],
html[lang="en"] p.roadmap-text[data-zh],
html[lang="en"] span.section-title-en[data-zh],
html[lang="en"] div.v[data-zh],
html[lang="en"] h3.biz-name[data-zh] { display: none; }
html[lang="en"] div.hero-subtitle[data-en],
html[lang="en"] p.hero-desc[data-en],
html[lang="en"] p.about-lede[data-en],
html[lang="en"] p.biz-desc[data-en],
html[lang="en"] p.contact-lead[data-en],
html[lang="en"] p.roadmap-text[data-en],
html[lang="en"] span.section-title-en[data-en],
html[lang="en"] div.v[data-en],
html[lang="en"] h3.biz-name[data-en] { display: block; }

.tl-en { display: none; }
html[lang="en"] .tl-zh { display: none; }
html[lang="en"] .tl-en { display: inline; }

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0;
  border: 1px solid var(--line-2);
  border-radius: 100px;
  padding: 3px;
  margin-left: 24px;
  background: rgba(255,255,255,0.5);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  position: relative;
}
.lang-toggle button {
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px 11px;
  border-radius: 100px;
  color: var(--ink-3);
  font-family: inherit;
  font-size: inherit;
  letter-spacing: inherit;
  font-weight: 500;
  transition: color 0.2s ease;
  position: relative;
  z-index: 1;
}
.lang-toggle button.on { color: #fff; }
.lang-toggle .pill {
  position: absolute;
  top: 3px; bottom: 3px;
  width: calc(50% - 3px);
  background: var(--ink);
  border-radius: 100px;
  transition: left 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
  left: 3px;
}
.lang-toggle.is-en .pill { left: calc(50%); }

/* ============ HEADER ============ */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 250, 248, 0.85);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.brand-mark {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}
.brand-text {
  font-size: 17px;
  color: var(--ink);
}
.brand-text-en {
  font-size: 12px;
  color: var(--ink-4);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-left: 2px;
}
nav.primary {
  display: flex;
  gap: 36px;
  align-items: center;
}
nav.primary a {
  font-size: 14.5px;
  color: var(--ink-2);
  font-weight: 500;
  transition: color 0.15s ease;
  position: relative;
  padding: 6px 0;
}
nav.primary a:hover { color: var(--accent); }
nav.primary a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  height: 1.5px;
  width: 0;
  background: var(--ink);
  transition: width 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
}
nav.primary a.active::after,
nav.primary a:hover::after { width: 100%; }
nav.primary a:hover::after { background: var(--accent); }

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-2);
  width: 40px; height: 40px;
  border-radius: 8px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.menu-toggle svg { width: 18px; height: 18px; }

/* ============ HERO ============ */
.hero {
  position: relative;
  padding: clamp(64px, 10vw, 140px) 0 clamp(80px, 11vw, 160px);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  background-position: -1px -1px;
  mask-image: radial-gradient(ellipse 80% 70% at 70% 40%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 70% 40%, #000 30%, transparent 80%);
  opacity: 0.7;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 12px;
  border: 1px solid var(--line-2);
  border-radius: 100px;
  background: rgba(255,255,255,0.6);
  margin-bottom: 32px;
}
.hero-eyebrow .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  animation: dotPulse 2.4s ease-in-out infinite;
}
@keyframes dotPulse {
  0%, 100% { box-shadow: 0 0 0 3px var(--accent-soft); }
  50% { box-shadow: 0 0 0 6px rgba(0, 82, 255, 0.04); }
}
h1.hero-title {
  font-size: clamp(56px, 9vw, 124px);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 0.95;
  color: var(--ink);
  margin-bottom: 20px;
}
.hero-subtitle {
  font-size: clamp(20px, 2.2vw, 26px);
  color: var(--ink-2);
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.hero-subtitle::before {
  content: "";
  width: 32px; height: 2px;
  background: var(--accent);
  flex-shrink: 0;
}
.hero-desc {
  font-size: 16px;
  color: var(--ink-3);
  max-width: 560px;
  line-height: 1.75;
  margin-bottom: 44px;
  text-wrap: pretty;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  font-size: 15px;
  font-weight: 500;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.18s ease;
  font-family: inherit;
}
.btn-primary {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
  position: relative;
  overflow: hidden;
}
.btn-primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  transform: translateY(-1px);
}
.btn-primary::before {
  content: "";
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.18), transparent);
  transition: left 0.6s ease;
}
.btn-primary:hover::before { left: 100%; }
.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-2);
}
.btn-secondary:hover {
  border-color: var(--ink);
  background: rgba(255,255,255,0.6);
}
.btn .arrow { transition: transform 0.18s ease; }
.btn:hover .arrow { transform: translateX(3px); }

.hero-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 480px;
  margin-left: auto;
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.hero-visual svg {
  width: 100%;
  height: 100%;
  display: block;
  animation: floatY 8s ease-in-out infinite;
}
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.diag-line {
  stroke-dasharray: 520;
  stroke-dashoffset: 520;
  animation: drawLine 2.2s cubic-bezier(0.65, 0, 0.35, 1) 0.4s forwards;
}
@keyframes drawLine {
  to { stroke-dashoffset: 0; }
}

.diag-node {
  opacity: 0;
  transform-origin: center;
  transform-box: fill-box;
  animation: nodePop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}
.diag-node.center {
  animation: nodePop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards, nodeBreathe 3s ease-in-out infinite 2.5s;
}
@keyframes nodePop {
  0% { opacity: 0; transform: scale(0); }
  100% { opacity: 1; transform: scale(1); }
}
@keyframes nodeBreathe {
  0%, 100% { filter: drop-shadow(0 0 0 rgba(0, 82, 255, 0)); }
  50% { filter: drop-shadow(0 0 8px rgba(0, 82, 255, 0.6)); }
}

.off-dot {
  opacity: 0;
  animation: dotBlink 4s ease-in-out infinite;
}
@keyframes dotBlink {
  0%, 100% { opacity: 0; }
  20%, 80% { opacity: 0.5; }
}

.cell-fade {
  opacity: 0;
  animation: cellFade 1.5s ease 1.8s forwards;
}
@keyframes cellFade {
  to { opacity: 0.04; }
}

.matrix-coord {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-4);
  letter-spacing: 0.05em;
  opacity: 0;
  animation: fadeIn 0.6s ease 2.2s forwards;
}
@keyframes fadeIn { to { opacity: 1; } }
.matrix-coord.tl { top: -8px; left: -8px; }
.matrix-coord.br { bottom: -8px; right: -8px; }

/* ============ SECTION COMMON ============ */
section.block {
  padding: clamp(80px, 10vw, 140px) 0;
  position: relative;
}
.section-header {
  display: flex;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}
.section-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-4);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  flex-shrink: 0;
  padding-top: 14px;
  min-width: 80px;
}
.section-title {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--ink);
}
.section-title-en {
  display: block;
  font-size: clamp(13px, 1.4vw, 15px);
  font-weight: 400;
  color: var(--ink-4);
  letter-spacing: 0.06em;
  margin-top: 10px;
  font-family: var(--font-mono);
}

/* ============ ABOUT ============ */
.about {
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.about-content {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 64px;
  align-items: start;
}
.about-lede {
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.45;
  color: var(--ink);
  letter-spacing: -0.015em;
  font-weight: 500;
  text-wrap: pretty;
}
.about-lede .accent {
  color: var(--accent);
  background: linear-gradient(transparent 65%, var(--accent-soft) 65%);
}
.about-meta {
  display: grid;
  gap: 28px;
}
.about-meta-item {
  border-top: 1px solid var(--line-2);
  padding-top: 18px;
}
.about-meta-item .k {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-4);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.about-meta-item .v {
  font-size: 16px;
  color: var(--ink-2);
  line-height: 1.6;
}

/* ============ BUSINESS ============ */
.biz-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.biz-card {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 48px 40px;
  position: relative;
  background: var(--bg);
  transition: background 0.2s ease;
  min-height: 320px;
  display: flex;
  flex-direction: column;
}
.biz-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.biz-card::after {
  content: "";
  position: absolute;
  bottom: 24px; right: 24px;
  width: 8px; height: 8px;
  border-right: 1px solid var(--ink-4);
  border-bottom: 1px solid var(--ink-4);
  opacity: 0;
  transform: translate(-6px, -6px);
  transition: opacity 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
}
.biz-card:hover { background: #fff; }
.biz-card:hover::before { width: 100%; }
.biz-card:hover::after {
  opacity: 1;
  transform: translate(0, 0);
  border-color: var(--accent);
}
.biz-card:hover .biz-icon path,
.biz-card:hover .biz-icon line,
.biz-card:hover .biz-icon rect,
.biz-card:hover .biz-icon circle,
.biz-card:hover .biz-icon ellipse { stroke: var(--accent); }
.biz-card .biz-icon path,
.biz-card .biz-icon line,
.biz-card .biz-icon rect,
.biz-card .biz-icon circle,
.biz-card .biz-icon ellipse { transition: stroke 0.3s ease; }
.biz-num,
.biz-icon,
.biz-name {
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.biz-card:hover .biz-num { transform: translateX(4px); }
.biz-card:hover .biz-icon { transform: translateY(-3px); }
.biz-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-4);
  letter-spacing: 0.08em;
  margin-bottom: 28px;
}
.biz-icon {
  width: 48px; height: 48px;
  margin-bottom: 28px;
}
.biz-icon svg { width: 100%; height: 100%; }
.biz-name {
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}
.biz-desc {
  font-size: 15px;
  color: var(--ink-3);
  line-height: 1.7;
  text-wrap: pretty;
}

/* ============ ROADMAP ============ */
.roadmap {
  background: var(--ink);
  color: #F5F5F2;
  position: relative;
  overflow: hidden;
}
.roadmap::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}
.roadmap::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 82, 255, 0.6), transparent);
  animation: scanBeam 6s linear infinite;
  pointer-events: none;
}
@keyframes scanBeam {
  0% { transform: translateY(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(600px); opacity: 0; }
}

.traj-line {
  stroke-dasharray: 420;
  stroke-dashoffset: 420;
}
.roadmap.in-view .traj-line {
  animation: drawLine 2s cubic-bezier(0.65, 0, 0.35, 1) 0.3s forwards;
}
.traj-node {
  opacity: 0;
  transform-origin: center;
  transform-box: fill-box;
}
.roadmap.in-view .traj-node {
  animation: nodePop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}
.roadmap .section-tag { color: rgba(255,255,255,0.4); }
.roadmap .section-title { color: #fff; }
.roadmap .section-title-en { color: rgba(255,255,255,0.4); }
.roadmap-content {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.roadmap-text {
  font-size: clamp(18px, 1.8vw, 22px);
  line-height: 1.6;
  color: rgba(255,255,255,0.78);
  max-width: 520px;
  text-wrap: pretty;
}
.roadmap-status {
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 32px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 100px;
}
.roadmap-status .pulse {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,82,255,0.25);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.roadmap-vis {
  aspect-ratio: 1 / 0.7;
  position: relative;
}
.roadmap-vis svg { width: 100%; height: 100%; }

/* ============ CONTACT ============ */
.contact {
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
}
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: end;
}
.contact-lead {
  font-size: clamp(18px, 1.8vw, 20px);
  color: var(--ink-2);
  line-height: 1.6;
  max-width: 460px;
}
.contact-card {
  background: #fff;
  border: 1px solid var(--line);
  padding: 36px;
  border-radius: 12px;
}
.contact-row {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 14px 0;
  transition: padding-left 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.contact-row + .contact-row {
  border-top: 1px solid var(--line);
}
.contact-row:hover { padding-left: 8px; }
.contact-icon {
  width: 40px; height: 40px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.3s ease, transform 0.3s ease;
}
.contact-row:hover .contact-icon {
  background: var(--accent);
  color: #fff;
  transform: rotate(-4deg) scale(1.05);
}
.contact-icon svg { width: 18px; height: 18px; }
.contact-detail .k {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-4);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.contact-detail .v {
  font-size: 16px;
  color: var(--ink);
  font-weight: 500;
}
.contact-detail .v a:hover { color: var(--accent); }

/* ============ FOOTER ============ */
footer.site-footer {
  background: var(--bg);
  border-top: 1px solid var(--line);
  padding: 40px 0 32px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
}
.footer-left {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13.5px;
  color: var(--ink-3);
}
.footer-center {
  justify-self: center;
  text-align: center;
  font-size: 13.5px;
}
.footer-left .sep {
  width: 3px; height: 3px;
  border-radius: 50%;
  background: var(--line-2);
}
.footer-right {
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-4);
  letter-spacing: 0.08em;
}
.icp {
  color: var(--ink-3);
  transition: color 0.15s;
}
.icp:hover { color: var(--accent); }

/* ============ RESPONSIVE ============ */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { max-width: 360px; margin: 0 auto; }
  .about-content { grid-template-columns: 1fr; gap: 40px; }
  .roadmap-content { grid-template-columns: 1fr; gap: 48px; }
  .contact-content { grid-template-columns: 1fr; gap: 32px; align-items: stretch; }
  .biz-grid { grid-template-columns: 1fr; }
  .section-header { flex-direction: column; gap: 12px; margin-bottom: 40px; }
  .section-tag { padding-top: 0; }
}
@media (max-width: 720px) {
  nav.primary { display: none; }
  .menu-toggle { display: inline-flex; }
  nav.primary.open {
    display: flex;
    position: absolute;
    top: 68px;
    left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(250, 250, 248, 0.98);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    padding: 8px 0;
  }
  nav.primary.open a {
    padding: 14px var(--pad);
    width: 100%;
    border-bottom: 1px solid var(--line);
  }
  nav.primary.open .lang-toggle {
    margin: 12px var(--pad);
    align-self: flex-start;
  }
  .biz-card { padding: 36px 28px; min-height: 0; }
  .contact-card { padding: 24px; }
  .footer-inner { grid-template-columns: 1fr; justify-items: center; text-align: center; gap: 8px; }
  .footer-left,
  .footer-right { justify-self: center; }
  .footer-left { justify-content: center; }
  .hero-eyebrow { font-size: 11px; }
}