/* ==========================================================================
   九垓云物官网
   页面采用原生 CSS 构建，无需编译工具；断点覆盖桌面、平板与手机。
   ========================================================================== */

:root {
  --ink: #0b1718;
  --ink-soft: #203032;
  --paper: #ffffff;
  --mist: #f2f5f3;
  --line: #d9e0dc;
  --line-dark: rgba(255, 255, 255, 0.16);
  --muted: #647174;
  --accent: #19d5a2;
  --accent-dark: #008c6d;
  --signal: #e6f04a;
  --danger: #c43f3f;
  --header-height: 82px;
  --container: 1240px;
  --section-space: clamp(88px, 9vw, 144px);
  --shadow: 0 24px 64px rgba(9, 28, 28, 0.14);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--paper);
  font-family:
    Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial,
    sans-serif;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0;
  font-kerning: normal;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.nav-open {
  overflow: hidden;
}

body.is-opening-dashboard {
  overflow: hidden;
}

.dashboard-loading {
  position: fixed;
  z-index: 1000;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  color: var(--paper);
  background: rgba(5, 17, 19, 0.78);
  backdrop-filter: blur(9px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease;
}

.dashboard-loading[aria-hidden="false"] {
  opacity: 1;
  pointer-events: all;
}

.dashboard-loading-card {
  display: grid;
  justify-items: center;
  gap: 9px;
  min-width: min(100%, 280px);
  padding: 28px 34px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 18px;
  background: rgba(16, 39, 42, 0.94);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.26);
}

.dashboard-loading-card > strong {
  font-size: 1.05rem;
}

.dashboard-loading-card > span:last-child {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.88rem;
}

.dashboard-loading-spinner {
  width: 30px;
  height: 30px;
  border: 3px solid rgba(255, 255, 255, 0.24);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: dashboard-loading-spin 700ms linear infinite;
}

@keyframes dashboard-loading-spin {
  to {
    transform: rotate(360deg);
  }
}

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

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

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

button,
select {
  cursor: pointer;
}

button {
  border: 0;
}

h1,
h2,
h3,
p,
figure,
ul,
ol,
dl,
dd {
  margin: 0;
}

h1,
h2,
h3,
strong {
  letter-spacing: 0;
  text-wrap: balance;
}

p,
li,
dd {
  text-align: left;
  word-break: normal;
  overflow-wrap: break-word;
  text-wrap: pretty;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

svg {
  width: 1em;
  height: 1em;
  stroke-width: 1.8;
}

::selection {
  color: var(--ink);
  background: var(--signal);
}

:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 16px;
  color: var(--paper);
  background: var(--ink);
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

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

.section {
  position: relative;
  padding-block: var(--section-space);
  overflow: hidden;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 800;
  line-height: 1.2;
  text-transform: uppercase;
}

.eyebrow > span {
  width: 32px;
  height: 2px;
  flex: 0 0 auto;
  background: currentColor;
}

.eyebrow.dark {
  color: var(--accent-dark);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(320px, 1.1fr);
  gap: 56px;
  align-items: end;
  margin-bottom: 64px;
}

.section-heading .eyebrow {
  grid-column: 1 / -1;
  margin-bottom: -26px;
}

.section-heading h2,
.platform-copy h2,
.about-title h2,
.contact-copy h2 {
  max-width: 760px;
  font-size: clamp(2.35rem, 4.8vw, 4.6rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: 0;
}

.section-heading > p:last-child,
.platform-copy > p,
.contact-copy > p {
  max-width: 38em;
  color: var(--muted);
  font-size: clamp(1rem, 1.35vw, 1.16rem);
  line-height: 1.85;
}

.section-heading.light,
.section-heading.light > p:last-child {
  color: var(--paper);
}

.section-heading.light > p:last-child {
  color: rgba(255, 255, 255, 0.66);
}

/* Header
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  width: 100%;
  height: var(--header-height);
  color: var(--paper);
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  transition:
    height 220ms ease,
    color 220ms ease,
    background-color 220ms ease,
    box-shadow 220ms ease;
}

.site-header.is-scrolled {
  height: 70px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.94);
  border-bottom-color: transparent;
  box-shadow: 0 8px 32px rgba(10, 27, 28, 0.09);
  backdrop-filter: blur(16px);
}

.nav-shell {
  display: flex;
  width: min(calc(100% - 48px), 1360px);
  height: 100%;
  margin-inline: auto;
  align-items: center;
  gap: 40px;
}

.brand {
  display: inline-flex;
  min-width: 230px;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  place-items: center;
  color: var(--ink);
  background: var(--accent);
}

.brand-mark svg {
  width: 24px;
  height: 24px;
}

.brand-copy {
  display: grid;
  line-height: 1;
}

.brand-copy strong {
  font-size: 1.2rem;
  font-weight: 800;
}

.brand-copy small {
  margin-top: 7px;
  color: currentColor;
  font-size: 0.59rem;
  font-weight: 700;
  opacity: 0.64;
}

.primary-nav {
  display: flex;
  margin-left: auto;
  align-items: center;
  gap: clamp(22px, 2.4vw, 38px);
}

.primary-nav a {
  position: relative;
  padding-block: 10px;
  font-size: 0.9rem;
  font-weight: 700;
}

.primary-nav a::after {
  position: absolute;
  right: 0;
  bottom: 4px;
  left: 0;
  height: 2px;
  background: var(--accent);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.primary-nav a:hover::after,
.primary-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.mobile-nav-contact {
  display: none;
}

.mobile-nav-login {
  display: none;
}

.nav-actions {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.nav-login {
  display: inline-flex;
  min-height: 48px;
  padding-inline: 16px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--paper);
  border: 1px solid currentColor;
  font-size: 0.9rem;
  font-weight: 800;
  transition:
    color 180ms ease,
    background-color 180ms ease,
    transform 180ms ease;
}

.nav-login:hover {
  color: var(--ink);
  background: var(--paper);
  transform: translateY(-2px);
}

.site-header.is-scrolled .nav-login {
  color: var(--ink);
}

.site-header.is-scrolled .nav-login:hover {
  color: var(--paper);
  background: var(--ink);
}

.nav-cta {
  display: inline-flex;
  min-height: 48px;
  padding-inline: 20px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--ink);
  background: var(--signal);
  font-size: 0.9rem;
  font-weight: 800;
  transition:
    background-color 180ms ease,
    transform 180ms ease;
}

.nav-cta:hover {
  background: var(--paper);
  transform: translateY(-2px);
}

.site-header.is-scrolled .nav-cta {
  color: var(--paper);
  background: var(--ink);
}

.site-header.is-scrolled .nav-cta:hover {
  background: var(--accent-dark);
}

.icon-button {
  display: inline-grid;
  width: 48px;
  height: 48px;
  padding: 0;
  place-items: center;
  color: inherit;
  background: transparent;
}

.nav-toggle {
  display: none;
  margin-left: auto;
  border: 1px solid currentColor;
}

/* Hero
   ========================================================================== */

.hero {
  position: relative;
  display: grid;
  min-height: min(900px, 100svh);
  color: var(--paper);
  background: #102224;
  isolation: isolate;
}

.hero-media,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-media {
  z-index: -3;
  object-fit: cover;
  object-position: center 56%;
}

.hero-shade {
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(4, 15, 17, 0.91) 0%, rgba(4, 15, 17, 0.65) 46%, rgba(4, 15, 17, 0.16) 76%),
    linear-gradient(0deg, rgba(4, 15, 17, 0.72) 0%, transparent 46%),
    linear-gradient(180deg, rgba(4, 15, 17, 0.42) 0%, transparent 24%);
}

.hero::after {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.055) 1px, transparent 1px);
  background-size: 120px 120px;
  content: "";
  mask-image: linear-gradient(to right, black, transparent 80%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  padding-top: calc(var(--header-height) + clamp(72px, 10vh, 116px));
  padding-bottom: clamp(70px, 9vh, 108px);
  grid-template-columns: minmax(0, 1fr) minmax(330px, 0.48fr);
  gap: clamp(64px, 8vw, 128px);
  align-items: end;
}

.hero-copy {
  min-width: 0;
  max-width: 820px;
}

.hero-copy .eyebrow {
  margin-bottom: 30px;
}

.hero h1 {
  max-width: 800px;
  font-size: clamp(4rem, 7.7vw, 7.1rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 36em;
  margin-top: 34px;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(1.05rem, 1.45vw, 1.28rem);
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  margin-top: 42px;
  flex-wrap: wrap;
  gap: 12px;
}

/* Decorative, CSS-only signal map: it suggests the flow between sensors,
   edge gateway, and cloud without competing with the hero copy. */
.iot-network {
  position: absolute;
  z-index: 1;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.iot-orbit {
  position: absolute;
  border: 1px solid rgba(76, 244, 202, 0.22);
  border-radius: 50%;
  animation: iot-orbit-drift 12s ease-in-out infinite;
}

.iot-orbit-one {
  top: 10%;
  right: 7%;
  width: min(40vw, 580px);
  aspect-ratio: 1;
}

.iot-orbit-two {
  top: 23%;
  right: 15%;
  width: min(25vw, 350px);
  aspect-ratio: 1;
  border-color: rgba(230, 240, 74, 0.22);
  animation-delay: -6s;
  animation-direction: reverse;
}

.iot-link {
  position: absolute;
  right: 3%;
  height: 1px;
  transform-origin: right center;
  background: linear-gradient(90deg, transparent, rgba(85, 245, 204, 0.58), transparent);
  opacity: 0.65;
}

.iot-link-one {
  top: 34%;
  width: min(36vw, 510px);
  transform: rotate(-22deg);
}

.iot-link-two {
  top: 59%;
  right: 8%;
  width: min(30vw, 420px);
  transform: rotate(18deg);
}

.iot-node {
  position: absolute;
  display: grid;
  width: 14px;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: 50%;
  background: rgba(14, 65, 64, 0.72);
  box-shadow: 0 0 0 6px rgba(52, 227, 186, 0.08), 0 0 24px rgba(52, 227, 186, 0.6);
  animation: iot-node-pulse 3.4s ease-in-out infinite;
}

.iot-node b {
  width: 4px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--accent);
}

.iot-node-one { top: 24%; right: 20%; }
.iot-node-two { top: 42%; right: 39%; animation-delay: -1.1s; }
.iot-node-three { top: 62%; right: 12%; animation-delay: -2.2s; }
.iot-node-four { top: 76%; right: 31%; animation-delay: -0.5s; }

.iot-data-pulse {
  position: absolute;
  width: 7px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 14px var(--signal);
  animation: iot-data-travel 4.8s linear infinite;
}

.iot-pulse-one { top: 32%; right: 34%; }
.iot-pulse-two { top: 58%; right: 26%; animation-delay: -2.4s; }

@keyframes iot-orbit-drift {
  50% { transform: translate(-12px, 16px) scale(1.025); }
}

@keyframes iot-node-pulse {
  50% { transform: scale(1.35); box-shadow: 0 0 0 10px rgba(52, 227, 186, 0.02), 0 0 30px rgba(52, 227, 186, 0.75); }
}

@keyframes iot-data-travel {
  0% { transform: translate(90px, 50px); opacity: 0; }
  16% { opacity: 1; }
  82% { opacity: 1; }
  100% { transform: translate(-300px, -105px); opacity: 0; }
}

@media (max-width: 760px) {
  .iot-orbit-one { right: -31vw; width: 84vw; }
  .iot-orbit-two { right: -9vw; width: 48vw; }
  .iot-link { opacity: 0.4; }
  .iot-node-two, .iot-node-four, .iot-data-pulse { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .iot-orbit, .iot-node, .iot-data-pulse { animation: none; }
}

.button {
  display: inline-flex;
  min-height: 54px;
  padding: 0 24px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border: 1px solid transparent;
  font-size: 0.92rem;
  font-weight: 800;
  line-height: 1;
  transition:
    color 180ms ease,
    background-color 180ms ease,
    border-color 180ms ease,
    transform 180ms ease;
}

.button > span,
.nav-cta > span,
.nav-login > span,
.text-link > span {
  white-space: nowrap;
}

.button svg {
  width: 18px;
  height: 18px;
}

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

.button-primary {
  color: var(--ink);
  background: var(--accent);
}

.button-primary:hover {
  background: var(--signal);
}

.button-ghost {
  color: var(--paper);
  border-color: rgba(255, 255, 255, 0.46);
  background: rgba(9, 25, 27, 0.2);
  backdrop-filter: blur(8px);
}

.button-ghost:hover {
  border-color: var(--paper);
  background: rgba(255, 255, 255, 0.1);
}

.hero-capabilities {
  align-self: end;
  border-top: 1px solid rgba(255, 255, 255, 0.4);
}

.hero-capabilities li {
  display: grid;
  min-height: 92px;
  padding: 22px 0;
  grid-template-columns: 32px 1fr;
  gap: 18px;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.24);
}

.hero-capabilities svg {
  width: 26px;
  height: 26px;
  color: var(--accent);
}

.hero-capabilities span {
  display: grid;
  color: rgba(255, 255, 255, 0.64);
  font-size: 0.82rem;
  line-height: 1.6;
}

.hero-capabilities strong {
  margin-bottom: 3px;
  color: var(--paper);
  font-size: 1rem;
}

.scroll-cue {
  position: absolute;
  right: 32px;
  bottom: 30px;
  display: grid;
  width: 50px;
  height: 50px;
  place-items: center;
  color: var(--ink);
  background: var(--signal);
}

/* Overview and capabilities
   ========================================================================== */

.overview {
  background: var(--paper);
}

.overview::before {
  position: absolute;
  top: 0;
  right: 0;
  width: 29%;
  height: 13px;
  background: var(--accent);
  content: "";
}

.overview-label {
  display: flex;
  margin-bottom: clamp(64px, 8vw, 110px);
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 800;
}

.overview-label svg {
  width: 20px;
  height: 20px;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.capability-item {
  position: relative;
  min-height: 310px;
  padding: 34px 30px 32px;
  border-right: 1px solid var(--line);
  transition:
    color 220ms ease,
    background-color 220ms ease;
}

.capability-item:first-child {
  border-left: 1px solid var(--line);
}

.capability-item::before {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 4px;
  background: var(--accent);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 260ms ease;
}

.capability-item:hover {
  color: var(--paper);
  background: var(--ink);
}

.capability-item:hover::before {
  transform: scaleX(1);
}

.item-index {
  display: block;
  margin-bottom: 52px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
}

.capability-item > svg {
  width: 34px;
  height: 34px;
  margin-bottom: 28px;
  color: var(--accent-dark);
}

.capability-item h3 {
  margin-bottom: 12px;
  font-size: 1.28rem;
  line-height: 1.4;
}

.capability-item p {
  color: var(--muted);
  font-size: 0.91rem;
  line-height: 1.75;
}

.capability-item:hover p,
.capability-item:hover .item-index {
  color: rgba(255, 255, 255, 0.64);
}

.capability-item:hover > svg {
  color: var(--accent);
}

/* Solution switcher
   ========================================================================== */

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

.solutions::before {
  position: absolute;
  top: 0;
  left: max(24px, calc((100% - var(--container)) / 2));
  width: 1px;
  height: 100%;
  background: rgba(255, 255, 255, 0.06);
  content: "";
}

.solution-switcher {
  border-top: 1px solid var(--line-dark);
}

.solution-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--line-dark);
}

.solution-tab {
  position: relative;
  display: grid;
  min-height: 112px;
  padding: 24px 28px;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  color: rgba(255, 255, 255, 0.46);
  background: transparent;
  border-right: 1px solid var(--line-dark);
  text-align: left;
  transition:
    color 180ms ease,
    background-color 180ms ease;
}

.solution-tab:last-child {
  border-right: 0;
}

.solution-tab::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 3px;
  background: var(--accent);
  content: "";
  transform: scaleX(0);
  transition: transform 220ms ease;
}

.solution-tab > span {
  align-self: start;
  font-size: 0.68rem;
  font-weight: 800;
}

.solution-tab > svg {
  width: 25px;
  height: 25px;
}

.solution-tab strong {
  font-size: 1.08rem;
}

.solution-tab:hover,
.solution-tab.is-active {
  color: var(--paper);
  background: rgba(255, 255, 255, 0.04);
}

.solution-tab.is-active::after {
  transform: scaleX(1);
}

.solution-panel {
  display: grid;
  min-height: 570px;
  grid-template-columns: minmax(0, 1.42fr) minmax(360px, 0.78fr);
  background: #102224;
}

.solution-visual {
  position: relative;
  min-height: 570px;
  overflow: hidden;
}

.solution-visual::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 55%, rgba(7, 22, 23, 0.62));
  content: "";
  pointer-events: none;
}

.solution-visual img {
  height: 100%;
  object-fit: cover;
  transition:
    opacity 220ms ease,
    transform 700ms ease;
}

.solution-visual img.is-changing {
  opacity: 0.34;
  transform: scale(1.015);
}

.solution-visual figcaption {
  position: absolute;
  bottom: 26px;
  left: 28px;
  z-index: 1;
  padding: 9px 13px;
  color: var(--ink);
  background: var(--paper);
  font-size: 0.76rem;
  font-weight: 800;
}

.solution-copy {
  display: flex;
  min-width: 0;
  padding: clamp(46px, 5vw, 74px);
  flex-direction: column;
  justify-content: center;
}

.solution-kicker {
  margin-bottom: 26px;
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 800;
}

.solution-copy h3 {
  max-width: 420px;
  margin-bottom: 24px;
  font-size: clamp(2rem, 3.2vw, 3.2rem);
  line-height: 1.2;
}

.solution-copy > p:not(.solution-kicker) {
  color: rgba(255, 255, 255, 0.66);
  font-size: 0.98rem;
}

.solution-copy ul {
  margin: 34px 0 38px;
  border-top: 1px solid var(--line-dark);
}

.solution-copy li {
  display: flex;
  padding: 15px 0;
  align-items: center;
  gap: 13px;
  border-bottom: 1px solid var(--line-dark);
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.9rem;
}

.solution-copy li svg {
  flex: 0 0 auto;
  color: var(--accent);
}

.text-link {
  display: inline-flex;
  width: fit-content;
  padding-bottom: 6px;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid currentColor;
  font-size: 0.9rem;
  font-weight: 800;
}

.text-link svg {
  transition: transform 180ms ease;
}

.text-link:hover svg {
  transform: translateX(5px);
}

/* Platform
   ========================================================================== */

.platform {
  background: var(--mist);
}

.platform-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(360px, 0.94fr);
  gap: clamp(54px, 8vw, 112px);
  align-items: center;
}

.platform-copy {
  min-width: 0;
  grid-column: 2;
}

.platform-copy .eyebrow,
.about-title .eyebrow,
.contact-copy .eyebrow {
  margin-bottom: 28px;
}

.platform-copy h2 {
  margin-bottom: 30px;
}

.platform-visual {
  position: relative;
  grid-column: 1;
  grid-row: 1;
  min-height: 620px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.platform-visual::before {
  position: absolute;
  top: 0;
  right: 0;
  z-index: 1;
  width: 34%;
  height: 12px;
  background: var(--signal);
  content: "";
}

.platform-visual img {
  height: 100%;
  object-fit: cover;
}

.platform-visual figcaption {
  position: absolute;
  right: 24px;
  bottom: 24px;
  left: 24px;
  display: flex;
  min-height: 56px;
  padding: 14px 18px;
  align-items: center;
  gap: 12px;
  color: var(--paper);
  background: rgba(8, 24, 25, 0.8);
  font-size: 0.84rem;
  font-weight: 700;
  backdrop-filter: blur(12px);
}

.live-dot {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(25, 213, 162, 0.16);
}

.platform-list {
  margin-top: 48px;
  border-top: 1px solid var(--line);
}

.platform-list > div {
  display: grid;
  padding: 22px 0;
  grid-template-columns: minmax(150px, 0.72fr) 1fr;
  gap: 20px;
  border-bottom: 1px solid var(--line);
}

.platform-list dt {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.92rem;
  font-weight: 800;
}

.platform-list dt svg {
  color: var(--accent-dark);
}

.platform-list dd {
  color: var(--muted);
  font-size: 0.88rem;
}

/* Products
   ========================================================================== */

.products {
  background: var(--paper);
}

.product-layout {
  display: grid;
  grid-template-columns: minmax(360px, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(52px, 7vw, 100px);
  align-items: start;
}

.product-visual {
  position: sticky;
  top: 104px;
  aspect-ratio: 4 / 4.25;
  overflow: hidden;
  background: var(--mist);
}

.product-visual::after {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(12, 35, 36, 0.1);
  content: "";
  pointer-events: none;
}

.product-visual img {
  height: 100%;
  object-fit: cover;
}

.product-list {
  border-top: 1px solid var(--ink);
}

.product-row {
  display: grid;
  min-height: 148px;
  padding: 28px 8px;
  grid-template-columns: 42px 1fr 44px;
  gap: 24px;
  align-items: start;
  border-bottom: 1px solid var(--line);
  transition:
    padding 200ms ease,
    background-color 200ms ease;
}

.product-row:hover {
  padding-right: 18px;
  padding-left: 18px;
  background: var(--mist);
}

.product-row > span {
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 800;
}

.product-row h3 {
  margin-bottom: 9px;
  font-size: 1.22rem;
  line-height: 1.45;
}

.product-row p {
  max-width: 600px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.8;
}

.product-row > svg {
  width: 27px;
  height: 27px;
  color: var(--accent-dark);
}

/* Process
   ========================================================================== */

.process {
  color: var(--paper);
  background:
    linear-gradient(110deg, rgba(29, 68, 63, 0.78), transparent 45%),
    #132627;
}

.process::after {
  position: absolute;
  right: -180px;
  bottom: -220px;
  width: 520px;
  height: 520px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  box-shadow:
    0 0 0 70px rgba(255, 255, 255, 0.025),
    0 0 0 140px rgba(255, 255, 255, 0.018);
  content: "";
  pointer-events: none;
}

.process-list {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.process-list::before {
  position: absolute;
  top: 60px;
  right: 12.5%;
  left: 12.5%;
  height: 1px;
  background: rgba(255, 255, 255, 0.2);
  content: "";
}

.process-list li {
  position: relative;
  min-height: 270px;
  padding: 30px 28px;
  border-left: 1px solid var(--line-dark);
}

.process-list li:last-child {
  border-right: 1px solid var(--line-dark);
}

.process-list li > span {
  display: block;
  margin-bottom: 58px;
  color: rgba(255, 255, 255, 0.48);
  font-size: 0.72rem;
  font-weight: 800;
}

.process-list li > svg {
  position: absolute;
  top: 47px;
  left: calc(50% - 13px);
  z-index: 1;
  width: 26px;
  height: 26px;
  padding: 5px;
  color: var(--ink);
  background: var(--accent);
  box-sizing: content-box;
}

.process-list h3 {
  margin-bottom: 13px;
  font-size: 1.2rem;
  line-height: 1.45;
}

.process-list p {
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.88rem;
  line-height: 1.8;
}

/* About
   ========================================================================== */

.about {
  background: var(--paper);
}

.about-layout {
  display: grid;
  grid-template-columns: minmax(340px, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(60px, 10vw, 160px);
  align-items: start;
}

.about-title {
  position: sticky;
  top: 112px;
}

.about-copy {
  padding-top: 62px;
}

.about-copy > p {
  max-width: 680px;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.9;
}

.about-copy .about-lead {
  margin-bottom: 26px;
  color: var(--ink);
  font-size: clamp(1.5rem, 2.3vw, 2.2rem);
  font-weight: 650;
  line-height: 1.45;
}

.about-principles {
  display: grid;
  margin-top: 54px;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.about-principles span {
  display: grid;
  min-height: 130px;
  padding: 24px 14px;
  place-items: center;
  gap: 8px;
  border-right: 1px solid var(--line);
  font-size: 0.88rem;
  font-weight: 800;
  text-align: center;
}

.about-principles span:last-child {
  border-right: 0;
}

.about-principles svg {
  width: 26px;
  height: 26px;
  color: var(--accent-dark);
}

/* Contact
   ========================================================================== */

.contact {
  color: var(--paper);
  background: #071415;
}

.contact::before {
  position: absolute;
  top: 0;
  right: 0;
  width: 42%;
  height: 12px;
  background: var(--signal);
  content: "";
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.8fr) minmax(520px, 1.2fr);
  gap: clamp(60px, 10vw, 150px);
  align-items: start;
}

.contact-copy h2 {
  margin-bottom: 30px;
}

.contact-copy {
  min-width: 0;
}

.contact-copy > p {
  color: rgba(255, 255, 255, 0.62);
}

.contact-location {
  display: flex;
  margin-top: 48px;
  align-items: center;
  gap: 13px;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 800;
}

.contact-form {
  padding: clamp(28px, 4vw, 52px);
  color: var(--ink);
  background: var(--paper);
}

.field-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.contact-form label {
  display: grid;
  margin-bottom: 22px;
  gap: 9px;
}

.contact-form label > span {
  font-size: 0.78rem;
  font-weight: 800;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 0;
  border-bottom: 1px solid #aeb9b5;
  border-radius: 0;
  outline: 0;
  background: transparent;
  transition: border-color 160ms ease;
}

.contact-form input,
.contact-form select {
  height: 48px;
}

.contact-form textarea {
  min-height: 112px;
  padding-block: 12px;
  resize: vertical;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-bottom-color: var(--accent-dark);
}

.contact-form [aria-invalid="true"] {
  border-bottom-color: var(--danger);
}

.form-footer {
  display: flex;
  min-height: 58px;
  margin-top: 12px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.form-footer #form-status {
  max-width: 250px;
  color: var(--accent-dark);
  font-size: 0.78rem;
  font-weight: 700;
}

.contact-form .button {
  color: var(--ink);
  white-space: nowrap;
}

/* Footer
   ========================================================================== */

.site-footer {
  color: rgba(255, 255, 255, 0.64);
  background: #050d0e;
}

.footer-main {
  display: grid;
  min-height: 140px;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-main > p {
  font-size: 0.82rem;
}

.back-to-top {
  margin-left: auto;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.back-to-top:hover {
  color: var(--ink);
  background: var(--signal);
}

.footer-bottom {
  display: flex;
  min-height: 74px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  font-size: 0.72rem;
}

/* Reveal animation
   ========================================================================== */

.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 600ms ease,
    transform 600ms ease;
}

.js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.capability-grid .reveal:nth-child(2),
.process-list .reveal:nth-child(2) {
  transition-delay: 70ms;
}

.capability-grid .reveal:nth-child(3),
.process-list .reveal:nth-child(3) {
  transition-delay: 140ms;
}

.capability-grid .reveal:nth-child(4),
.process-list .reveal:nth-child(4) {
  transition-delay: 210ms;
}

/* Tablet
   ========================================================================== */

@media (max-width: 1080px) {
  :root {
    --header-height: 74px;
  }

  .nav-shell {
    gap: 24px;
  }

  .brand {
    min-width: 196px;
  }

  .primary-nav {
    gap: 20px;
  }

  .primary-nav a {
    font-size: 0.82rem;
  }

  .nav-cta {
    padding-inline: 16px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.42fr);
    gap: 54px;
  }

  .hero h1 {
    font-size: clamp(3.8rem, 8vw, 6rem);
  }

  .capability-item {
    padding-inline: 22px;
  }

  .solution-panel {
    grid-template-columns: minmax(0, 1.15fr) minmax(340px, 0.85fr);
  }

  .solution-copy {
    padding: 42px;
  }

  .platform-layout {
    gap: 56px;
  }

  .platform-visual {
    min-height: 540px;
  }
}

@media (max-width: 940px) {
  .site-header,
  .site-header.is-scrolled {
    height: var(--header-height);
  }

  .nav-shell {
    width: min(calc(100% - 36px), var(--container));
  }

  .nav-toggle {
    display: inline-grid;
  }

  .nav-actions {
    display: none;
  }

  .primary-nav {
    position: fixed;
    top: var(--header-height);
    right: 0;
    bottom: 0;
    left: 0;
    display: flex;
    padding: 34px 24px 48px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    color: var(--paper);
    background: rgba(7, 20, 21, 0.98);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition:
      opacity 180ms ease,
      visibility 180ms ease,
      transform 180ms ease;
    overflow-y: auto;
  }

  .primary-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .primary-nav a {
    display: flex;
    min-height: 64px;
    padding: 18px 0;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
    font-size: 1.08rem;
  }

  .primary-nav a::after {
    display: none;
  }

  .mobile-nav-contact {
    display: flex;
    margin-top: 18px;
    padding-inline: 20px !important;
    justify-content: center;
    color: var(--ink);
    background: var(--accent);
    border-bottom: 0 !important;
  }

  .mobile-nav-login {
    display: flex;
    margin-top: 12px;
    min-height: 52px !important;
    padding-inline: 20px !important;
    justify-content: center;
    gap: 10px;
    color: var(--paper);
    border: 1px solid rgba(255, 255, 255, 0.48) !important;
  }

  .hero {
    min-height: 820px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 52px;
    align-content: end;
  }

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

  .hero-capabilities {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }

  .hero-capabilities li {
    min-height: 120px;
    padding: 22px 18px;
    grid-template-columns: 28px 1fr;
    border-right: 1px solid rgba(255, 255, 255, 0.24);
  }

  .hero-capabilities li:last-child {
    border-right: 0;
  }

  .scroll-cue {
    display: none;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .section-heading .eyebrow {
    margin-bottom: 10px;
  }

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

  .capability-item:nth-child(2) {
    border-right: 1px solid var(--line);
  }

  .capability-item:nth-child(3),
  .capability-item:nth-child(4) {
    border-top: 1px solid var(--line);
  }

  .solution-tab {
    min-height: 96px;
    padding: 20px;
  }

  .solution-panel {
    grid-template-columns: 1fr;
  }

  .solution-visual {
    min-height: 470px;
    aspect-ratio: 16 / 10;
  }

  .solution-copy {
    padding: 48px;
  }

  .platform-layout,
  .product-layout,
  .about-layout,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .platform-copy {
    grid-column: 1;
  }

  .platform-visual {
    grid-column: 1;
    grid-row: auto;
    min-height: 520px;
  }

  .product-visual,
  .about-title {
    position: relative;
    top: auto;
  }

  .product-visual {
    aspect-ratio: 16 / 9;
  }

  .about-copy {
    padding-top: 0;
  }

  .contact-layout {
    gap: 54px;
  }
}

/* Mobile
   ========================================================================== */

@media (max-width: 680px) {
  :root {
    --header-height: 66px;
    --section-space: 76px;
  }

  .container {
    width: min(calc(100% - 32px), var(--container));
  }

  .nav-shell {
    width: calc(100% - 28px);
  }

  .brand {
    min-width: 0;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .brand-copy strong {
    font-size: 1rem;
  }

  .brand-copy small {
    font-size: 0.5rem;
  }

  .nav-toggle {
    width: 42px;
    height: 42px;
  }

  .hero {
    min-height: 760px;
  }

  .hero-media {
    object-position: 57% center;
  }

  .hero-shade {
    background:
      linear-gradient(90deg, rgba(4, 15, 17, 0.86), rgba(4, 15, 17, 0.35)),
      linear-gradient(0deg, rgba(4, 15, 17, 0.88) 0%, rgba(4, 15, 17, 0.18) 72%);
  }

  .hero::after {
    background-size: 80px 80px;
  }

  .hero-inner {
    padding-top: calc(var(--header-height) + 64px);
    padding-bottom: 38px;
    gap: 38px;
  }

  .hero-copy .eyebrow {
    margin-bottom: 22px;
  }

  .hero h1 {
    font-size: clamp(2.8rem, 12vw, 3.75rem);
    line-height: 1.06;
  }

  .hero-lead {
    margin-top: 24px;
    font-size: 0.96rem;
    line-height: 1.85;
  }

  .hero-actions {
    margin-top: 30px;
  }

  .button {
    min-height: 50px;
    padding-inline: 18px;
    font-size: 0.85rem;
  }

  .hero-capabilities {
    grid-template-columns: 1fr;
  }

  .hero-capabilities li {
    min-height: 0;
    padding: 14px 0;
    grid-template-columns: 25px 1fr;
    border-right: 0;
  }

  .hero-capabilities li:not(:first-child) {
    display: none;
  }

  .hero-capabilities svg {
    width: 22px;
    height: 22px;
  }

  .overview::before,
  .contact::before {
    height: 8px;
  }

  .overview-label {
    margin-bottom: 52px;
  }

  .section-heading {
    margin-bottom: 42px;
  }

  .section-heading h2,
  .platform-copy h2,
  .about-title h2,
  .contact-copy h2 {
    font-size: clamp(2.15rem, 10.5vw, 3.15rem);
    line-height: 1.16;
  }

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

  .capability-item {
    min-height: 238px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .capability-item:not(:first-child) {
    border-top: 0;
  }

  .item-index {
    margin-bottom: 30px;
  }

  .solution-tabs {
    grid-template-columns: 1fr;
  }

  .solution-tab {
    min-height: 72px;
    padding: 16px 18px;
    grid-template-columns: 28px 28px 1fr;
    border-right: 0;
    border-bottom: 1px solid var(--line-dark);
  }

  .solution-tab::after {
    top: 0;
    right: auto;
    bottom: 0;
    width: 3px;
    height: auto;
    transform: scaleY(0);
  }

  .solution-tab.is-active::after {
    transform: scaleY(1);
  }

  .solution-panel,
  .solution-visual {
    min-height: 0;
  }

  .solution-visual {
    aspect-ratio: 4 / 3;
  }

  .solution-visual::after {
    background: linear-gradient(0deg, rgba(7, 22, 23, 0.46), transparent 55%);
  }

  .solution-visual figcaption {
    right: 16px;
    bottom: 16px;
    left: 16px;
    width: fit-content;
  }

  .solution-copy {
    padding: 36px 24px 42px;
  }

  .solution-copy h3 {
    font-size: 2rem;
    line-height: 1.25;
  }

  .platform-layout,
  .product-layout,
  .about-layout {
    gap: 42px;
  }

  .platform-visual {
    min-height: 0;
    aspect-ratio: 4 / 4.5;
  }

  .platform-list {
    margin-top: 36px;
  }

  .platform-list > div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .product-visual {
    aspect-ratio: 4 / 3;
  }

  .product-row {
    min-height: 0;
    padding: 24px 4px;
    grid-template-columns: 28px 1fr 28px;
    gap: 14px;
  }

  .product-row:hover {
    padding-right: 8px;
    padding-left: 8px;
  }

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

  .process-list::before {
    top: 44px;
    bottom: 44px;
    left: 34px;
    width: 1px;
    height: auto;
  }

  .process-list li {
    min-height: 0;
    padding: 24px 20px 24px 76px;
    border-right: 1px solid var(--line-dark);
    border-bottom: 1px solid var(--line-dark);
  }

  .process-list li > span {
    margin-bottom: 12px;
  }

  .process-list li > svg {
    top: 30px;
    left: 16px;
  }

  .about-principles {
    grid-template-columns: 1fr;
  }

  .about-principles span {
    min-height: 86px;
    grid-template-columns: 28px 1fr;
    justify-items: start;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    text-align: left;
  }

  .about-principles span:last-child {
    border-bottom: 0;
  }

  .contact-layout {
    gap: 40px;
  }

  .contact-form {
    padding: 26px 20px;
  }

  .field-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .form-footer {
    align-items: stretch;
    flex-direction: column;
  }

  .form-footer #form-status {
    min-height: 22px;
  }

  .form-footer .button {
    width: 100%;
  }

  .footer-main {
    min-height: 180px;
    padding-block: 30px;
    grid-template-columns: 1fr auto;
  }

  .footer-main > p {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .footer-bottom {
    padding-block: 22px;
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }
}

@media (max-width: 390px) {
  .brand-copy small {
    display: none;
  }

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

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

  .product-row {
    grid-template-columns: 24px 1fr;
  }

  .product-row > svg {
    display: none;
  }
}

@media (max-height: 700px) and (min-width: 681px) {
  .hero {
    min-height: 700px;
  }

  .hero-inner {
    padding-top: 130px;
    padding-bottom: 46px;
  }

  .hero h1 {
    font-size: clamp(3.6rem, 7vw, 5.4rem);
  }

  .hero-copy .eyebrow {
    margin-bottom: 20px;
  }

  .hero-lead {
    margin-top: 22px;
  }

  .hero-actions {
    margin-top: 28px;
  }
}

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

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

  .js .reveal {
    opacity: 1;
    transform: none;
  }
}