:root {
  --navy-950: #020b1c;
  --navy-900: #06152f;
  --navy-850: #081d3e;
  --navy-800: #0a2850;
  --blue: #1768ff;
  --cyan: #27c7d8;
  --green: #18b875;
  --green-light: #45dda3;
  --amber: #f4ab3d;
  --red: #f06464;
  --ink: #0d1a2f;
  --ink-soft: #344258;
  --muted: #69778c;
  --line: #e3eaf2;
  --line-dark: rgba(255, 255, 255, 0.1);
  --surface: #f4f7fb;
  --white: #ffffff;
  --shadow-sm: 0 12px 30px rgba(19, 43, 79, 0.08);
  --shadow-lg: 0 26px 70px rgba(4, 20, 46, 0.16);
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 28px;
  --header-height: 74px;
  --scene: var(--green);
  --scene-soft: rgba(24, 184, 117, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 134px;
}

body {
  min-width: 1180px;
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

body.theme-carbon {
  --scene: #17b89a;
  --scene-soft: rgba(23, 184, 154, 0.11);
}

body.theme-paint {
  --scene: #f39a40;
  --scene-soft: rgba(243, 154, 64, 0.12);
}

body.theme-biodiversity {
  --scene: #72b55a;
  --scene-soft: rgba(114, 181, 90, 0.12);
}

body.theme-incineration {
  --scene: #32a9dd;
  --scene-soft: rgba(50, 169, 221, 0.12);
}

body.theme-anxiao {
  --scene: #22be82;
  --scene-soft: rgba(34, 190, 130, 0.11);
}

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

img {
  display: block;
  max-width: 100%;
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  color: inherit;
}

h1,
h2,
h3,
h4,
p,
ul,
ol,
figure {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  line-height: 1.2;
}

.skip-link {
  position: fixed;
  z-index: 9999;
  left: 16px;
  top: -80px;
  padding: 10px 16px;
  color: var(--white);
  background: var(--navy-900);
  border-radius: 6px;
}

.skip-link:focus {
  top: 12px;
}

.container {
  width: min(1200px, calc(100% - 64px));
  margin-inline: auto;
}

.section {
  position: relative;
  padding: 104px 0;
}

.section-muted {
  background: var(--surface);
}

.section-dark {
  color: var(--white);
  background:
    radial-gradient(circle at 84% 12%, rgba(33, 198, 161, 0.14), transparent 30%),
    linear-gradient(125deg, var(--navy-950), var(--navy-850));
}

.section-heading {
  max-width: 760px;
  margin-bottom: 48px;
}

.section-heading.centered {
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.section-heading.split {
  display: grid;
  max-width: none;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.62fr);
  align-items: end;
  gap: 80px;
}

.section-heading.split p {
  padding-bottom: 4px;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 16px;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.kicker::before {
  width: 26px;
  height: 2px;
  background: currentColor;
  content: "";
}

.theme-carbon .kicker,
.theme-paint .kicker,
.theme-biodiversity .kicker,
.theme-incineration .kicker,
.theme-anxiao .kicker {
  color: var(--scene);
}

.section-heading h2 {
  margin-bottom: 18px;
  font-size: 42px;
  letter-spacing: -0.035em;
}

.section-heading p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 16px;
}

.section-dark .section-heading p {
  color: #9fb0c6;
}

.section-dark .kicker {
  color: var(--green-light);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-flex;
  min-height: 50px;
  padding: 0 22px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border: 1px solid transparent;
  border-radius: 7px;
  font-size: 14px;
  font-weight: 800;
  line-height: 1;
  transition: transform 0.2s, background 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: var(--white);
  background: linear-gradient(135deg, var(--green), #109a68);
  box-shadow: 0 12px 28px rgba(24, 184, 117, 0.24);
}

.btn-primary:hover {
  box-shadow: 0 16px 34px rgba(24, 184, 117, 0.32);
}

.btn-outline {
  color: var(--ink);
  border-color: var(--line);
  background: var(--white);
}

.btn-outline:hover {
  border-color: var(--green);
  color: var(--green);
}

.btn-ghost {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.04);
}

.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.08);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--green);
  font-size: 14px;
  font-weight: 800;
}

.text-link span {
  transition: transform 0.2s;
}

.text-link:hover span {
  transform: translateX(4px);
}

/* Header and product dropdown */
.site-header {
  position: sticky;
  z-index: 1000;
  top: 0;
  height: var(--header-height);
  border-bottom: 1px solid rgba(8, 37, 76, 0.08);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 8px 28px rgba(20, 43, 75, 0.05);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  height: 100%;
  align-items: center;
}

.brand {
  display: inline-flex;
  min-width: 236px;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  color: #172036;
  line-height: 1;
}

.brand-copy strong {
  font-size: 18px;
  letter-spacing: 0.12em;
}

.brand-copy small {
  margin-top: 7px;
  color: #758096;
  font-size: 7px;
  font-weight: 800;
  letter-spacing: 0.11em;
}

.brand-title-stack {
  display: flex;
  padding-left: 14px;
  border-left: 1px solid rgba(8, 37, 76, 0.2);
  flex-direction: column;
  gap: 4px;
  color: #17345d;
  line-height: 1.25;
  white-space: nowrap;
}

.brand-title-stack span {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.025em;
}

.brand-title-stack span:last-child {
  color: #47708a;
  margin-right: -0.464em;
  letter-spacing: 0.464em;
}

.site-nav {
  display: flex;
  height: 100%;
  margin-left: auto;
  align-items: stretch;
  gap: 6px;
}

.nav-item {
  position: relative;
  display: flex;
  height: 100%;
  align-items: stretch;
}

.nav-link {
  position: relative;
  display: inline-flex;
  padding: 0 14px;
  align-items: center;
  gap: 7px;
  color: #2d394c;
  font-size: 14px;
  white-space: nowrap;
  transition: color 0.2s;
}

.nav-link::after {
  position: absolute;
  right: 50%;
  bottom: -1px;
  left: 50%;
  height: 3px;
  background: var(--green);
  content: "";
  transition: left 0.2s, right 0.2s;
}

.nav-link:hover,
.nav-link.active,
.nav-item:focus-within > .nav-link {
  color: var(--green);
}

.nav-link:hover::after,
.nav-link.active::after,
.nav-item:focus-within > .nav-link::after {
  right: 14px;
  left: 14px;
}

.nav-chevron {
  width: 7px;
  height: 7px;
  margin-top: -4px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.2s;
}

.nav-item.has-dropdown:hover .nav-chevron,
.nav-item.has-dropdown:focus-within .nav-chevron,
.nav-item.has-dropdown.is-open .nav-chevron {
  margin-top: 3px;
  transform: rotate(225deg);
}

.product-dropdown {
  position: absolute;
  top: calc(100% + 1px);
  left: 50%;
  width: 510px;
  padding: 16px;
  border: 1px solid rgba(16, 55, 99, 0.1);
  border-radius: 0 0 16px 16px;
  opacity: 0;
  visibility: hidden;
  background: rgba(255, 255, 255, 0.99);
  box-shadow: 0 26px 60px rgba(5, 27, 59, 0.18);
  transform: translate(-50%, 12px);
  transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
}

.product-dropdown::before {
  position: absolute;
  right: 0;
  bottom: 100%;
  left: 0;
  height: 14px;
  content: "";
}

.nav-item.has-dropdown:hover .product-dropdown,
.nav-item.has-dropdown:focus-within .product-dropdown,
.nav-item.has-dropdown.is-open .product-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.dropdown-head {
  display: flex;
  margin: -2px 2px 12px;
  padding: 10px 12px 14px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.dropdown-head span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.dropdown-head a {
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
}

.dropdown-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.dropdown-link {
  display: grid;
  min-height: 84px;
  padding: 14px;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: #f7f9fc;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.dropdown-link:first-child {
  grid-column: 1 / -1;
  min-height: 76px;
}

.dropdown-link:hover,
.dropdown-link.current {
  border-color: rgba(24, 184, 117, 0.2);
  background: rgba(24, 184, 117, 0.07);
  transform: translateY(-2px);
}

.dropdown-index {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border-radius: 8px;
  color: var(--green);
  background: rgba(24, 184, 117, 0.1);
  font-size: 11px;
  font-weight: 900;
}

.dropdown-copy {
  display: flex;
  flex-direction: column;
}

.dropdown-copy strong {
  margin-bottom: 3px;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.35;
}

.dropdown-copy small {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}

.order-link {
  margin-left: 7px;
  padding: 0 14px;
  color: var(--white);
  background: var(--navy-900);
}

.order-link::after {
  display: none;
}

.order-link:hover {
  color: var(--white);
  background: var(--green);
}

/* Local page navigation */
.page-nav {
  position: sticky;
  z-index: 800;
  top: var(--header-height);
  height: 56px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
}

.page-nav .container {
  display: flex;
  height: 100%;
  align-items: center;
  justify-content: space-between;
}

.page-nav strong {
  font-size: 13px;
}

.page-nav-links {
  display: flex;
  gap: 28px;
}

.page-nav a {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.page-nav a:hover {
  color: var(--green);
}

/* AIBOX main page hero */
.product-hero {
  position: relative;
  min-height: 720px;
  overflow: hidden;
  color: var(--white);
  background: var(--navy-950);
}

.product-hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.product-hero::after {
  position: absolute;
  z-index: 1;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(2, 11, 28, 0.98) 0%, rgba(2, 11, 28, 0.93) 33%, rgba(2, 11, 28, 0.38) 59%, rgba(2, 11, 28, 0.05) 100%),
    linear-gradient(0deg, rgba(2, 11, 28, 0.52), transparent 45%);
  content: "";
}

.hero-grid {
  position: absolute;
  z-index: 2;
  inset: 0;
  opacity: 0.14;
  background-image:
    linear-gradient(rgba(91, 188, 255, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(91, 188, 255, 0.16) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: linear-gradient(90deg, #000, transparent 70%);
}

.product-hero .container {
  position: relative;
  z-index: 3;
  display: flex;
  min-height: 720px;
  align-items: center;
}

.product-hero-copy {
  width: 560px;
  padding: 74px 0 104px;
}

.hero-eyebrow {
  display: inline-flex;
  margin-bottom: 24px;
  padding: 8px 12px;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(92, 233, 187, 0.2);
  border-radius: 999px;
  color: #9cf3d2;
  background: rgba(33, 195, 138, 0.08);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.hero-eyebrow i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green-light);
  box-shadow: 0 0 0 6px rgba(69, 221, 163, 0.1);
}

.product-hero h1 {
  margin-bottom: 20px;
  font-size: 60px;
  letter-spacing: -0.045em;
}

.product-hero h1 span {
  display: block;
  margin-top: 8px;
  color: var(--green-light);
  font-size: 31px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.product-hero-lead {
  margin-bottom: 14px;
  color: #e3edf9;
  font-size: 20px;
  font-weight: 700;
}

.product-hero-description {
  max-width: 530px;
  margin-bottom: 30px;
  color: #98aac2;
  font-size: 15px;
}

.hero-badges {
  display: flex;
  margin: 34px 0 0;
  padding: 0;
  gap: 10px;
  list-style: none;
}

.hero-badges li {
  padding: 8px 11px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  color: #b9c7d9;
  background: rgba(255, 255, 255, 0.04);
  font-size: 11px;
}

.hero-caption {
  position: absolute;
  z-index: 3;
  right: 0;
  bottom: 30px;
  padding: 7px 11px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 6px;
  color: #9fb0c5;
  background: rgba(3, 14, 33, 0.72);
  font-size: 11px;
  backdrop-filter: blur(8px);
}

/* Product overview */
.overview-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  gap: 70px;
  align-items: center;
}

.overview-copy h2 {
  margin-bottom: 22px;
  font-size: 44px;
  letter-spacing: -0.04em;
}

.overview-copy p {
  color: var(--muted);
}

.overview-note {
  margin-top: 30px;
  padding: 20px 22px;
  border-left: 3px solid var(--green);
  background: var(--surface);
}

.overview-note strong {
  display: block;
  margin-bottom: 5px;
  font-size: 14px;
}

.overview-note span {
  color: var(--muted);
  font-size: 13px;
}

.product-stack {
  position: relative;
  display: grid;
  min-height: 440px;
  padding: 34px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 50% 50%, rgba(24, 184, 117, 0.12), transparent 42%),
    #f8fafc;
  overflow: hidden;
}

.product-stack::before {
  position: absolute;
  width: 410px;
  height: 410px;
  border: 1px solid rgba(24, 184, 117, 0.18);
  border-radius: 50%;
  content: "";
}

.stack-core {
  position: relative;
  z-index: 2;
  display: grid;
  width: 176px;
  height: 176px;
  padding: 20px;
  place-items: center;
  border: 1px solid rgba(24, 184, 117, 0.28);
  border-radius: 30px;
  color: var(--white);
  background: linear-gradient(145deg, var(--navy-850), var(--navy-950));
  box-shadow: 0 24px 50px rgba(3, 18, 41, 0.2);
  text-align: center;
}

.stack-core b {
  display: block;
  color: var(--green-light);
  font-size: 32px;
  line-height: 1;
}

.stack-core small {
  color: #9db0c6;
  font-size: 11px;
}

.stack-node {
  position: absolute;
  z-index: 3;
  min-width: 138px;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  font-size: 12px;
  font-weight: 800;
  text-align: center;
}

.stack-node:nth-of-type(2) {
  top: 48px;
  left: 50%;
  transform: translateX(-50%);
}

.stack-node:nth-of-type(3) {
  top: 50%;
  right: 32px;
  transform: translateY(-50%);
}

.stack-node:nth-of-type(4) {
  bottom: 48px;
  left: 50%;
  transform: translateX(-50%);
}

.stack-node:nth-of-type(5) {
  top: 50%;
  left: 32px;
  transform: translateY(-50%);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.value-card,
.pain-card {
  position: relative;
  min-height: 260px;
  padding: 29px 25px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}

.value-card:hover,
.pain-card:hover {
  border-color: rgba(24, 184, 117, 0.25);
  box-shadow: var(--shadow-sm);
  transform: translateY(-6px);
}

.card-index {
  position: absolute;
  right: 22px;
  top: 18px;
  color: #d7e0eb;
  font-size: 14px;
  font-weight: 900;
}

.card-icon {
  display: grid;
  width: 50px;
  height: 50px;
  margin-bottom: 24px;
  place-items: center;
  border-radius: 14px;
  color: var(--green);
  background: rgba(24, 184, 117, 0.09);
  font-size: 15px;
  font-weight: 900;
}

.value-card h3,
.pain-card h3 {
  margin-bottom: 11px;
  font-size: 18px;
}

.value-card p,
.pain-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 13px;
}

/* Data flow */
.flow-shell {
  padding: 42px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.035);
}

.flow-row {
  display: grid;
  grid-template-columns: 1fr 36px 1.18fr 36px 1fr 36px 1fr;
  align-items: center;
}

.flow-card {
  min-height: 180px;
  padding: 24px 22px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.045);
}

.flow-card.core {
  border-color: rgba(69, 221, 163, 0.3);
  background: linear-gradient(145deg, rgba(24, 184, 117, 0.13), rgba(32, 101, 168, 0.08));
}

.flow-card span {
  display: block;
  margin-bottom: 18px;
  color: var(--green-light);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.flow-card h3 {
  margin-bottom: 12px;
  font-size: 18px;
}

.flow-card p {
  margin-bottom: 0;
  color: #92a5bd;
  font-size: 12px;
}

.flow-arrow {
  color: rgba(90, 228, 180, 0.72);
  font-size: 23px;
  text-align: center;
}

.flow-note {
  display: flex;
  margin-top: 22px;
  padding: 18px 20px;
  align-items: center;
  gap: 14px;
  border-radius: 10px;
  color: #a9bbcf;
  background: rgba(0, 0, 0, 0.18);
  font-size: 12px;
}

.flow-note i {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--green-light);
}

/* Application cards */
.application-list {
  display: grid;
  gap: 24px;
}

.application-card {
  display: grid;
  min-height: 338px;
  grid-template-columns: 0.92fr 1.08fr;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--white);
  box-shadow: 0 10px 35px rgba(17, 44, 80, 0.045);
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
}

.application-card:nth-child(even) {
  grid-template-columns: 1.08fr 0.92fr;
}

.application-card:nth-child(even) .application-image {
  order: 2;
}

.application-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.application-image {
  position: relative;
  min-height: 338px;
  overflow: hidden;
  background: var(--navy-900);
}

.application-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s;
}

.application-card:hover .application-image img {
  transform: scale(1.035);
}

.visual-label {
  position: absolute;
  left: 16px;
  bottom: 16px;
  padding: 5px 9px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 5px;
  color: #d3dfed;
  background: rgba(3, 15, 34, 0.72);
  font-size: 10px;
  backdrop-filter: blur(8px);
}

.application-copy {
  display: flex;
  padding: 42px 46px;
  flex-direction: column;
  justify-content: center;
}

.application-number {
  color: var(--green);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.15em;
}

.application-copy h3 {
  margin: 13px 0 14px;
  font-size: 28px;
}

.application-copy p {
  margin-bottom: 22px;
  color: var(--muted);
  font-size: 14px;
}

.application-tags {
  display: flex;
  margin-bottom: 24px;
  padding: 0;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.application-tags li {
  padding: 5px 8px;
  border-radius: 5px;
  color: #526177;
  background: var(--surface);
  font-size: 10px;
  font-weight: 700;
}

/* Device and delivery */
.device-band {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #071832, #0a2b50);
  overflow: hidden;
}

.device-band-image {
  position: relative;
  min-height: 480px;
}

.device-band-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.device-band-image::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 60%, #092442);
  content: "";
}

.device-band-copy {
  display: flex;
  padding: 55px 54px 55px 20px;
  flex-direction: column;
  justify-content: center;
  color: var(--white);
}

.device-band-copy h2 {
  margin-bottom: 18px;
  font-size: 38px;
}

.device-band-copy > p {
  color: #9db0c6;
  font-size: 14px;
}

.device-list {
  display: grid;
  margin: 22px 0 0;
  padding: 0;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  list-style: none;
}

.device-list li {
  padding: 12px 13px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: #c8d6e7;
  background: rgba(255, 255, 255, 0.04);
  font-size: 12px;
}

.device-disclaimer {
  margin-top: 20px;
  color: #728aa7;
  font-size: 10px;
}

.process {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  counter-reset: steps;
}

.process-step {
  position: relative;
  min-height: 188px;
  padding: 28px 23px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  border-left: 1px solid var(--line);
  background: var(--white);
}

.process-step:first-child {
  border-radius: var(--radius) 0 0 var(--radius);
}

.process-step:last-child {
  border-right: 1px solid var(--line);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.process-step span {
  display: block;
  margin-bottom: 28px;
  color: var(--green);
  font-size: 12px;
  font-weight: 900;
}

.process-step h3 {
  margin-bottom: 8px;
  font-size: 16px;
}

.process-step p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
}

.process-step::after {
  position: absolute;
  z-index: 2;
  right: -5px;
  top: 48px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--white);
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 1px rgba(24, 184, 117, 0.25);
  content: "";
}

.process-step:last-child::after {
  display: none;
}

/* Scene page hero */
.scene-hero {
  position: relative;
  min-height: 645px;
  color: var(--white);
  background:
    radial-gradient(circle at 12% 86%, color-mix(in srgb, var(--scene) 18%, transparent), transparent 30%),
    linear-gradient(125deg, var(--navy-950), var(--navy-850));
  overflow: hidden;
}

.scene-hero::before {
  position: absolute;
  inset: 0;
  opacity: 0.16;
  background-image:
    linear-gradient(rgba(121, 190, 255, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(121, 190, 255, 0.14) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: linear-gradient(90deg, #000, transparent 70%);
  content: "";
}

.scene-hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  min-height: 645px;
  grid-template-columns: 0.88fr 1.12fr;
  align-items: center;
  gap: 58px;
}

.scene-copy {
  padding: 66px 0 74px;
}

.scene-parent {
  display: inline-flex;
  margin-bottom: 24px;
  align-items: center;
  gap: 9px;
  color: #92a8c2;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.scene-parent::before {
  width: 19px;
  height: 2px;
  background: var(--scene);
  content: "";
}

.scene-copy h1 {
  margin-bottom: 18px;
  font-size: 49px;
  letter-spacing: -0.04em;
}

.scene-slogan {
  margin-bottom: 14px;
  color: #e5eef8;
  font-size: 19px;
  font-weight: 700;
}

.scene-description {
  max-width: 510px;
  margin-bottom: 28px;
  color: #97a9bf;
  font-size: 14px;
}

.scene-badges {
  display: flex;
  margin: 30px 0 0;
  padding: 0;
  flex-wrap: wrap;
  gap: 9px;
  list-style: none;
}

.scene-badges li {
  padding: 7px 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 5px;
  color: #b9c7d8;
  background: rgba(255, 255, 255, 0.04);
  font-size: 10px;
}

.scene-visual {
  position: relative;
  margin: 0;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 18px;
  background: rgba(5, 19, 42, 0.72);
  box-shadow: 0 35px 70px rgba(0, 0, 0, 0.3);
  overflow: hidden;
  transform: perspective(1200px) rotateY(-2.5deg);
}

.scene-visual::before {
  position: absolute;
  z-index: 2;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: inherit;
  pointer-events: none;
  content: "";
}

.scene-visual img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.scene-visual figcaption {
  display: flex;
  min-height: 39px;
  padding: 0 14px;
  align-items: center;
  justify-content: space-between;
  color: #879ab2;
  background: rgba(3, 14, 33, 0.94);
  font-size: 10px;
}

.scene-visual figcaption span:first-child {
  color: #c1cedc;
}

.scene-facts {
  position: relative;
  z-index: 3;
  display: grid;
  margin-top: -1px;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.scene-fact {
  min-height: 105px;
  padding: 24px 25px;
  border-right: 1px solid var(--line);
}

.scene-fact:last-child {
  border-right: 0;
}

.scene-fact span,
.scene-fact strong {
  display: block;
}

.scene-fact span {
  margin-bottom: 6px;
  color: var(--scene);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.scene-fact strong {
  font-size: 14px;
}

/* Scene content */
.pain-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.pain-card .card-icon {
  color: var(--scene);
  background: var(--scene-soft);
}

.capability-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr 1fr;
  gap: 18px;
}

.capability-card {
  position: relative;
  min-height: 265px;
  padding: 29px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  overflow: hidden;
}

.capability-card.featured {
  grid-row: span 2;
  min-height: 548px;
  color: var(--white);
  background:
    radial-gradient(circle at 80% 18%, color-mix(in srgb, var(--scene) 25%, transparent), transparent 30%),
    linear-gradient(145deg, var(--navy-850), var(--navy-950));
}

.capability-card.featured .capability-icon {
  color: var(--white);
  background: var(--scene);
}

.capability-card.featured p,
.capability-card.featured li {
  color: #9eb0c5;
}

.capability-icon {
  display: grid;
  width: 47px;
  height: 47px;
  margin-bottom: 24px;
  place-items: center;
  border-radius: 13px;
  color: var(--scene);
  background: var(--scene-soft);
  font-size: 14px;
  font-weight: 900;
}

.capability-card h3 {
  margin-bottom: 12px;
  font-size: 18px;
}

.capability-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 13px;
}

.capability-card ul {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.capability-card li {
  padding: 10px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #aabbd0;
  font-size: 12px;
}

.scene-workflow {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
}

.workflow-step {
  position: relative;
  min-height: 184px;
  padding: 24px 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
}

.workflow-step::after {
  position: absolute;
  z-index: 2;
  right: -15px;
  top: 50%;
  color: color-mix(in srgb, var(--scene) 75%, white);
  content: "→";
  transform: translateY(-50%);
}

.workflow-step:last-child::after {
  display: none;
}

.workflow-step span {
  display: block;
  margin-bottom: 22px;
  color: color-mix(in srgb, var(--scene) 75%, white);
  font-size: 11px;
  font-weight: 900;
}

.workflow-step h3 {
  margin-bottom: 9px;
  font-size: 15px;
}

.workflow-step p {
  margin-bottom: 0;
  color: #91a4bb;
  font-size: 10px;
}

.deployment-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.deployment-card {
  position: relative;
  min-height: 380px;
  padding: 37px 35px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.deployment-card.remote {
  color: var(--white);
  border-color: transparent;
  background: linear-gradient(145deg, var(--navy-850), var(--navy-950));
}

.deployment-card > span {
  display: block;
  margin-bottom: 22px;
  color: var(--scene);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.13em;
}

.deployment-card h3 {
  margin-bottom: 13px;
  font-size: 24px;
}

.deployment-card > p {
  color: var(--muted);
  font-size: 13px;
}

.deployment-card.remote > p,
.deployment-card.remote li {
  color: #9eafc4;
}

.check-list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding: 10px 0 10px 23px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 12px;
}

.deployment-card.remote .check-list li {
  border-color: rgba(255, 255, 255, 0.1);
}

.check-list li::before {
  position: absolute;
  left: 1px;
  top: 13px;
  color: var(--scene);
  content: "✓";
  font-weight: 900;
}

.case-card {
  position: relative;
  display: grid;
  padding: 46px 48px;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 60px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--white);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.case-card::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 5px;
  background: var(--scene);
  content: "";
}

.case-label {
  display: inline-flex;
  margin-bottom: 20px;
  padding: 6px 10px;
  align-items: center;
  gap: 7px;
  border-radius: 999px;
  color: var(--scene);
  background: var(--scene-soft);
  font-size: 10px;
  font-weight: 900;
}

.case-card h3 {
  margin-bottom: 12px;
  font-size: 28px;
}

.case-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
}

.case-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.case-meta div {
  padding: 18px;
  border-radius: 10px;
  background: var(--surface);
}

.case-meta span,
.case-meta strong {
  display: block;
}

.case-meta span {
  margin-bottom: 5px;
  color: var(--scene);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.1em;
}

.case-meta strong {
  font-size: 12px;
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.benefit-card {
  min-height: 230px;
  padding: 29px 27px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.benefit-card span {
  display: block;
  margin-bottom: 32px;
  color: var(--scene);
  font-size: 12px;
  font-weight: 900;
}

.benefit-card h3 {
  margin-bottom: 10px;
  font-size: 19px;
}

.benefit-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 13px;
}

/* Anxiao modules and gallery */
.module-tabs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-bottom: 18px;
}

.module-tab {
  min-height: 74px;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  color: #9fb1c7;
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.module-tab:hover,
.module-tab.active {
  border-color: rgba(69, 221, 163, 0.35);
  color: var(--white);
  background: rgba(24, 184, 117, 0.13);
}

.module-panel {
  display: grid;
  min-height: 360px;
  padding: 42px;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 45px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
}

.module-panel[hidden] {
  display: none;
}

.module-panel h3 {
  margin-bottom: 15px;
  font-size: 27px;
}

.module-panel p {
  color: #98aac0;
  font-size: 13px;
}

.module-points {
  margin: 0;
  padding: 0;
  list-style: none;
}

.module-points li {
  display: grid;
  padding: 15px 0;
  grid-template-columns: 96px 1fr;
  gap: 13px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 12px;
}

.module-points strong {
  color: var(--green-light);
}

.module-points span {
  color: #9bacc1;
}

.gallery-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 16px;
}

.gallery-card {
  position: relative;
  padding: 0;
  border: 0;
  border-radius: 14px;
  background: var(--navy-900);
  cursor: pointer;
  overflow: hidden;
}

.gallery-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform 0.45s;
}

.gallery-card:hover img {
  transform: scale(1.035);
}

.gallery-card figcaption {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  padding: 30px 15px 13px;
  color: var(--white);
  background: linear-gradient(transparent, rgba(2, 11, 28, 0.92));
  font-size: 12px;
  font-weight: 800;
  text-align: left;
}

/* FAQ */
.faq-layout {
  display: grid;
  grid-template-columns: 0.52fr 1fr;
  gap: 74px;
}

.faq-intro {
  position: sticky;
  top: 160px;
  align-self: start;
}

.faq-intro h2 {
  margin-bottom: 16px;
  font-size: 40px;
}

.faq-intro p {
  color: var(--muted);
  font-size: 14px;
}

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

.accordion details {
  border-bottom: 1px solid var(--line);
}

.accordion summary {
  position: relative;
  padding: 22px 48px 22px 0;
  font-size: 15px;
  font-weight: 800;
  list-style: none;
  cursor: pointer;
}

.accordion summary::-webkit-details-marker {
  display: none;
}

.accordion summary::before,
.accordion summary::after {
  position: absolute;
  right: 8px;
  top: 32px;
  width: 14px;
  height: 1.5px;
  background: var(--green);
  content: "";
  transition: transform 0.2s;
}

.accordion summary::after {
  transform: rotate(90deg);
}

.accordion details[open] summary::after {
  transform: rotate(0);
}

.accordion details > div {
  padding: 0 48px 22px 0;
  color: var(--muted);
  font-size: 13px;
}

/* Cross-scene navigation */
.related-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.related-card {
  min-height: 150px;
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.related-card:hover,
.related-card.current {
  border-color: rgba(24, 184, 117, 0.28);
  box-shadow: var(--shadow-sm);
  transform: translateY(-4px);
}

.related-card span {
  display: block;
  margin-bottom: 24px;
  color: var(--green);
  font-size: 10px;
  font-weight: 900;
}

.related-card strong {
  display: block;
  margin-bottom: 7px;
  font-size: 14px;
}

.related-card small {
  color: var(--muted);
  font-size: 10px;
  line-height: 1.5;
}

/* CTA and footer */
.contact-banner {
  padding: 0 0 92px;
  background: var(--surface);
}

.contact-inner {
  position: relative;
  display: flex;
  min-height: 260px;
  padding: 48px 54px;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  border-radius: var(--radius-lg);
  color: var(--white);
  background:
    radial-gradient(circle at 85% 30%, rgba(55, 217, 163, 0.22), transparent 28%),
    linear-gradient(125deg, var(--navy-950), #0a3055);
  overflow: hidden;
}

.contact-inner::before {
  position: absolute;
  inset: 0;
  opacity: 0.16;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.12) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: linear-gradient(90deg, transparent, #000);
  content: "";
}

.contact-copy,
.contact-actions {
  position: relative;
  z-index: 2;
}

.contact-copy {
  max-width: 720px;
}

.contact-copy h2 {
  margin-bottom: 12px;
  font-size: 34px;
}

.contact-copy p {
  margin-bottom: 0;
  color: #9fb0c5;
  font-size: 14px;
}

.contact-actions {
  display: flex;
  gap: 12px;
}

.site-footer {
  color: #9aabc0;
  background: #030d20;
}

.footer-main {
  display: grid;
  padding: 65px 0 50px;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 90px;
}

.footer-brand .brand-copy {
  color: var(--white);
}

.footer-brand p {
  max-width: 330px;
  margin: 24px 0 0;
  color: #71849d;
  font-size: 13px;
}

.footer-links {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr 1fr;
  gap: 42px;
}

.footer-links strong {
  display: block;
  margin-bottom: 18px;
  color: var(--white);
  font-size: 13px;
}

.footer-links a,
.footer-links span {
  display: block;
  margin: 10px 0;
  color: #8395ac;
  font-size: 11px;
}

.footer-links a:hover {
  color: var(--green-light);
}

.footer-bottom {
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: #60748e;
  font-size: 10px;
}

/* Dialog */
.lightbox {
  width: min(1180px, calc(100vw - 70px));
  max-width: none;
  margin: auto;
  padding: 0;
  border: 0;
  border-radius: 14px;
  color: var(--white);
  background: #031025;
  box-shadow: 0 35px 100px rgba(0, 0, 0, 0.55);
}

.lightbox::backdrop {
  background: rgba(1, 7, 18, 0.86);
  backdrop-filter: blur(6px);
}

.lightbox img {
  width: 100%;
  max-height: calc(100vh - 130px);
  object-fit: contain;
}

.lightbox p {
  margin: 0;
  padding: 13px 18px;
  color: #a8b7ca;
  font-size: 12px;
}

.lightbox-close {
  position: fixed;
  z-index: 2;
  top: 14px;
  right: max(24px, calc((100vw - 1180px) / 2));
  display: grid;
  width: 40px;
  height: 40px;
  padding: 0;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  color: var(--white);
  background: rgba(3, 16, 37, 0.82);
  font-size: 22px;
  cursor: pointer;
}

/* Motion */
.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  transition-delay: var(--delay, 0ms);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 1280px) {
  .container {
    width: calc(100% - 54px);
  }

  .brand {
    min-width: 210px;
  }

  .brand-title-stack {
    padding-left: 10px;
    gap: 3px;
  }

  .brand-title-stack span {
    font-size: 10px;
  }

  .nav-link {
    padding-inline: 10px;
    font-size: 13px;
  }

  .product-dropdown {
    left: 44%;
  }

  .product-hero h1 {
    font-size: 54px;
  }

  .scene-copy h1 {
    font-size: 44px;
  }
}