/* AiBusTech corporate site */
:root {
  --bg: #f7f8fc;
  --surface: #ffffff;
  --surface-soft: #eef6f2;
  --ink: #172033;
  --text: #243044;
  --muted: #647084;
  --line: rgba(23, 32, 51, .12);
  --line-strong: rgba(23, 32, 51, .18);
  --brand-blue: #2563eb;
  --brand-green: #13b981;
  --brand-coral: #ff6b4a;
  --brand-yellow: #f8c933;
  --brand-ink: #111827;
  --shadow: 0 24px 70px rgba(24, 35, 60, .14);
  --shadow-soft: 0 14px 36px rgba(24, 35, 60, .09);
  --radius: 8px;
  --pill: 999px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Inter, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background:
    linear-gradient(180deg, #ffffff 0%, var(--bg) 320px),
    var(--bg);
  line-height: 1.55;
}

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

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

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 0 0 12px;
  background: rgba(247, 248, 252, .82);
  border-bottom: 1px solid rgba(23, 32, 51, .06);
  backdrop-filter: blur(18px);
}

.top-strip {
  padding: 8px 0 6px;
  text-align: center;
  font-size: 13px;
  color: #314256;
}

.top-strip a {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 14px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: rgba(255, 255, 255, .72);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 68px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 34px;
  background: rgba(255, 255, 255, .9);
  box-shadow: var(--shadow-soft);
}

.brand {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  min-width: 150px;
  padding-left: 8px;
}

.brand img {
  display: block;
  width: 168px;
  max-width: 168px;
  height: auto;
}

.links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex: 1 1 auto;
}

.links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 13px;
  border-radius: var(--pill);
  color: #526071;
  font-size: 14px;
  font-weight: 650;
  white-space: nowrap;
  transition: background .16s ease, color .16s ease;
}

.links a.active,
.links a:hover {
  color: var(--ink);
  background: #f0f3f8;
}

.nav-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex: 0 0 auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 17px;
  border: 1px solid var(--line-strong);
  border-radius: var(--pill);
  background: #ffffff;
  color: var(--ink);
  font-size: 14px;
  font-weight: 750;
  cursor: pointer;
  transition: transform .14s ease, box-shadow .14s ease, border-color .14s ease, background .14s ease;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: rgba(23, 32, 51, .24);
  box-shadow: 0 10px 22px rgba(24, 35, 60, .10);
}

.btn.primary {
  border-color: var(--brand-ink);
  background: var(--brand-ink);
  color: #ffffff;
}

.btn.primary:hover {
  background: #020617;
}

.mobile-toggle {
  display: none;
}

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  min-height: 40px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: #f7f9fc;
}

.lang-btn {
  border: 0;
  border-radius: var(--pill);
  background: transparent;
  color: #697587;
  font-weight: 800;
  font-size: 12px;
  padding: 8px 10px;
  cursor: pointer;
}

.lang-btn.active,
.lang-btn:hover {
  background: #ffffff;
  color: var(--ink);
  box-shadow: 0 4px 12px rgba(24, 35, 60, .08);
}

.hero {
  padding: 62px 0 34px;
}

.hero-center {
  text-align: center;
}

.announcement-pill,
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 34px;
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: rgba(255, 255, 255, .82);
  color: #536276;
  font-size: 13px;
  font-weight: 750;
}

.spark,
.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--brand-green);
  box-shadow: 0 0 0 5px rgba(19, 185, 129, .13);
  flex: 0 0 auto;
}

.clay-hero h1,
.page-h1 {
  max-width: 880px;
  margin: 18px auto 0;
  color: var(--ink);
  font-size: 68px;
  line-height: 1.03;
  font-weight: 850;
  letter-spacing: 0;
}

.lead {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

.hero-copy {
  max-width: 760px;
  margin: 20px auto 0;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.center-actions {
  justify-content: center;
}

.hero-visual {
  position: relative;
  overflow: hidden;
  width: 100%;
  margin-top: 42px;
  border: 1px solid rgba(23, 32, 51, .14);
  border-radius: 30px;
  background: #ffffff;
  box-shadow: var(--shadow);
  isolation: isolate;
}

.hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  min-height: 360px;
  object-fit: cover;
  transform: scale(1.01);
  transition: transform .5s ease, filter .5s ease;
}

.hero-visual:hover img {
  transform: scale(1.035);
  filter: saturate(1.06);
}

.visual-chip {
  position: absolute;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 14px;
  border: 1px solid rgba(23, 32, 51, .13);
  border-radius: var(--pill);
  background: rgba(255, 255, 255, .82);
  color: var(--ink);
  font-size: 13px;
  font-weight: 850;
  box-shadow: 0 14px 28px rgba(24, 35, 60, .13);
  backdrop-filter: blur(12px);
  animation: floatChip 5.8s ease-in-out infinite;
}

.chip-left {
  left: 5%;
  top: 22%;
}

.chip-right {
  right: 5%;
  top: 18%;
  animation-delay: .8s;
}

.chip-bottom {
  left: 44%;
  bottom: 8%;
  animation-delay: 1.4s;
}

.visual-sheen,
.visual-scanline {
  position: absolute;
  pointer-events: none;
  z-index: 2;
}

.visual-sheen {
  inset: 0;
  background: linear-gradient(110deg, transparent 8%, rgba(255, 255, 255, .26) 26%, transparent 46%);
  transform: translateX(-72%);
  animation: sheen 7s ease-in-out infinite;
}

.visual-scanline {
  left: 8%;
  right: 8%;
  bottom: 28%;
  height: 2px;
  border-radius: var(--pill);
  background: linear-gradient(90deg, transparent, rgba(37, 99, 235, .5), rgba(19, 185, 129, .55), transparent);
  animation: scanline 4.8s ease-in-out infinite;
}

.visual-band {
  padding: 8px 0 28px;
}

.visual-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.visual-cards article {
  display: grid;
  grid-template-columns: 148px 1fr;
  gap: 16px;
  align-items: center;
  min-height: 150px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #ffffff;
  box-shadow: var(--shadow-soft);
}

.visual-cards img {
  width: 148px;
  height: 112px;
  border-radius: 16px;
  object-fit: cover;
}

.visual-cards strong,
.visual-cards span {
  display: block;
}

.visual-cards strong {
  color: var(--ink);
  font-size: 18px;
  line-height: 1.2;
}

.visual-cards span {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.interactive-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  width: 148px;
  height: 112px;
  padding: 12px;
  border-radius: 16px;
  background: #f2fbf5;
}

.interactive-grid span {
  min-height: 0;
  margin: 0;
  border-radius: 12px;
  background: #ffffff;
  box-shadow: inset 0 0 0 1px rgba(23, 32, 51, .08);
  animation: tilePulse 3s ease-in-out infinite;
}

.interactive-grid span:nth-child(2),
.interactive-grid span:nth-child(5) {
  background: #dbeafe;
  animation-delay: .45s;
}

.interactive-grid span:nth-child(3),
.interactive-grid span:nth-child(4) {
  background: #dcfce7;
  animation-delay: .9s;
}

@keyframes floatChip {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

@keyframes sheen {
  0%, 46% { transform: translateX(-72%); }
  72%, 100% { transform: translateX(72%); }
}

@keyframes scanline {
  0%, 100% { opacity: .28; transform: translateY(0); }
  50% { opacity: .8; transform: translateY(-34px); }
}

@keyframes tilePulse {
  0%, 100% { transform: translateY(0); opacity: .78; }
  50% { transform: translateY(-4px); opacity: 1; }
}

.badges {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.badge,
.pill {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 6px 11px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: #ffffff;
  color: #536276;
  font-size: 13px;
  font-weight: 700;
}

.trust-band {
  padding: 10px 0 28px;
}

.trust-row {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.trust-row span {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: #ffffff;
  color: #536276;
  font-size: 13px;
  font-weight: 760;
}

.section {
  padding: 56px 0;
}

.section-title {
  display: grid;
  gap: 12px;
  margin-bottom: 24px;
}

.section-title.centered {
  justify-items: center;
  text-align: center;
}

.section-title h2,
.split h2,
.payment-layout h2,
.final-cta h2 {
  margin: 0;
  color: var(--ink);
  font-size: 38px;
  line-height: 1.12;
  font-weight: 850;
  letter-spacing: 0;
}

.section-title p {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.feature {
  position: relative;
  min-height: 270px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #ffffff;
  box-shadow: 0 12px 30px rgba(24, 35, 60, .07);
}

.feature:nth-child(2) {
  background: #f1f7ff;
}

.feature:nth-child(3) {
  background: #f2fbf5;
}

.feature-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--ink);
  color: #ffffff;
  font-size: 13px;
  font-weight: 850;
}

.feature h3 {
  margin: 38px 0 10px;
  color: var(--ink);
  font-size: 21px;
  line-height: 1.22;
}

.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.text-link {
  display: inline-flex;
  margin-top: 22px;
  color: #1d4ed8;
  font-size: 14px;
  font-weight: 850;
}

.split-band {
  background: #111827;
  color: #ffffff;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 42px;
  align-items: center;
}

.split-band .kicker {
  border-color: rgba(255, 255, 255, .18);
  background: rgba(255, 255, 255, .08);
  color: rgba(255, 255, 255, .74);
}

.split-band h2 {
  margin-top: 16px;
  color: #ffffff;
}

.split-band .lead {
  color: rgba(255, 255, 255, .72);
}

.process-list {
  display: grid;
  gap: 10px;
}

.process-list div {
  display: grid;
  grid-template-columns: 52px 1fr;
  align-items: center;
  min-height: 68px;
  padding: 12px 16px;
  border: 1px solid rgba(255, 255, 255, .13);
  border-radius: 18px;
  background: rgba(255, 255, 255, .06);
}

.process-list strong {
  color: var(--brand-yellow);
  font-size: 14px;
}

.process-list span {
  font-weight: 780;
}

.payment-band {
  background: #eef6f2;
}

.payment-layout {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(360px, 1fr);
  gap: 28px;
  align-items: center;
}

.final-cta {
  padding: 64px 0 72px;
}

.final-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 30px;
  border: 1px solid rgba(23, 32, 51, .12);
  border-radius: 28px;
  background: #ffffff;
  box-shadow: var(--shadow-soft);
}

.final-cta h2 {
  max-width: 760px;
  font-size: 32px;
}

.card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #ffffff;
  box-shadow: var(--shadow-soft);
}

.list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.list li {
  display: flex;
  gap: 10px;
  padding: 10px 0;
  border-top: 1px solid rgba(23, 32, 51, .10);
  color: var(--muted);
}

.list li:first-child {
  border-top: 0;
}

.check {
  margin-top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 6px;
  background: var(--brand-green);
  border: 1px solid rgba(23, 32, 51, .08);
  flex: 0 0 auto;
}

.contact {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 16px;
}

.kv {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 10px 14px;
  margin-top: 14px;
  color: var(--text);
  font-size: 14px;
}

.kv div {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #ffffff;
}

.kv .k {
  color: var(--muted);
}

.copy-row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 14px;
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.gradient-text {
  color: var(--brand-blue);
}

footer {
  padding: 34px 0 42px;
  border-top: 1px solid var(--line);
  background: #ffffff;
  color: var(--muted);
  font-size: 13px;
}

.footer-brand {
  display: grid;
  gap: 4px;
  max-width: 360px;
}

.footer-brand strong {
  color: var(--ink);
  font-size: 16px;
}

.note {
  font-size: 12px;
  color: var(--muted);
  margin-top: 14px;
}

.page-h1:focus,
.clay-hero h1:focus {
  outline: none;
}

@media (max-width: 1080px) {
  .nav-shell {
    flex-wrap: wrap;
    border-radius: 26px;
  }

  .links {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
    padding: 4px 0;
  }

  .nav-right {
    margin-left: auto;
  }
}

@media (max-width: 900px) {
  .container {
    padding: 0 18px;
  }

  .site-header {
    padding-bottom: 8px;
  }

  .top-strip {
    display: none;
  }

  .nav-shell {
    min-height: 60px;
    border-radius: 22px;
    padding: 8px;
  }

  .brand {
    min-width: auto;
    padding-left: 4px;
  }

  .brand img {
    width: 132px;
  }

  .links {
    display: none;
  }

  .links.open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    overflow: visible;
  }

  .links.open a {
    justify-content: flex-start;
  }

  .mobile-toggle {
    display: inline-flex;
  }

  .nav-cta {
    display: none;
  }

  .language-switch {
    min-height: 38px;
  }

  .hero {
    padding: 38px 0 28px;
  }

  .clay-hero h1,
  .page-h1 {
    font-size: 42px;
    line-height: 1.08;
  }

  .lead {
    font-size: 16px;
  }

  .hero-visual {
    border-radius: 22px;
  }

  .hero-visual img {
    min-height: 320px;
  }

  .visual-chip {
    min-height: 34px;
    padding: 6px 10px;
    font-size: 12px;
  }

  .chip-left {
    left: 6%;
    top: 10%;
  }

  .chip-right {
    right: 6%;
    top: 24%;
  }

  .chip-bottom {
    left: 8%;
    bottom: 7%;
  }

  .visual-cards {
    grid-template-columns: 1fr;
  }

  .grid-3,
  .split,
  .payment-layout,
  .contact {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 42px 0;
  }

  .section-title {
    text-align: left;
    justify-items: start;
  }

  .section-title h2,
  .split h2,
  .payment-layout h2 {
    font-size: 30px;
  }

  .feature {
    min-height: 230px;
  }

  .payment-layout {
    min-width: 0;
  }

  .final-cta-inner {
    display: grid;
    padding: 22px;
    border-radius: 22px;
  }

  .final-cta h2 {
    font-size: 28px;
  }

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

@media (max-width: 520px) {
  .nav-right {
    gap: 6px;
  }

  .btn {
    min-height: 40px;
    padding: 0 13px;
  }

  .language-switch {
    display: none;
  }

  .clay-hero h1,
  .page-h1 {
    font-size: 36px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .visual-cards article {
    grid-template-columns: 1fr;
  }

  .visual-cards img,
  .interactive-grid {
    width: 100%;
  }
}