:root {
  --ink: #0c1720;
  --ink-2: #172634;
  --muted: #657483;
  --line: #dce5ea;
  --paper: #f7fafb;
  --white: #ffffff;
  --cyan: #18d6c2;
  --cyan-dark: #0c8e8d;
  --blue: #2f74ff;
  --gold: #d7a94b;
  --shadow: 0 22px 60px rgba(14, 34, 48, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family:
    "Inter", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 74px;
  padding: 14px clamp(20px, 5vw, 72px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(220, 229, 234, 0.84);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 250px;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: #061820;
  font-weight: 800;
  background: linear-gradient(135deg, var(--cyan), #e9fff8);
  border-radius: 8px;
  letter-spacing: 0;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 18px;
}

.brand small {
  color: var(--muted);
  font-size: 11px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--ink-2);
  font-size: 14px;
  white-space: nowrap;
}

.nav a {
  transition: color 0.2s ease;
}

.nav a:hover {
  color: var(--cyan-dark);
}

.nav-cta {
  padding: 9px 15px;
  color: #062326;
  background: var(--cyan);
  border-radius: 6px;
  font-weight: 700;
}

.section-dark {
  color: var(--white);
  background:
    radial-gradient(circle at 85% 18%, rgba(24, 214, 194, 0.2), transparent 27%),
    linear-gradient(135deg, #07131c 0%, #0d2431 54%, #0a141a 100%);
}

.section-light {
  background: var(--paper);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.55fr);
  gap: clamp(28px, 5vw, 72px);
  min-height: calc(100vh - 74px);
  padding: clamp(54px, 8vw, 98px) clamp(20px, 5vw, 72px) 64px;
  overflow: hidden;
}

.hero-content,
.hero-panel {
  position: relative;
  z-index: 2;
  min-width: 0;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.grid-plane {
  position: absolute;
  right: -14%;
  bottom: -22%;
  width: 760px;
  height: 520px;
  background-image:
    linear-gradient(rgba(24, 214, 194, 0.13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(24, 214, 194, 0.13) 1px, transparent 1px);
  background-size: 42px 42px;
  transform: perspective(700px) rotateX(62deg) rotateZ(-13deg);
  transform-origin: center;
}

.node {
  position: absolute;
  width: 10px;
  height: 10px;
  background: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 0 10px rgba(24, 214, 194, 0.09), 0 0 42px rgba(24, 214, 194, 0.5);
}

.node-a {
  top: 26%;
  right: 28%;
}

.node-b {
  right: 12%;
  bottom: 38%;
}

.node-c {
  right: 40%;
  bottom: 24%;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--cyan-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-dark .eyebrow,
.inverted .eyebrow {
  color: var(--cyan);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 820px;
  margin-bottom: 20px;
  font-size: clamp(42px, 7vw, 86px);
  line-height: 1.04;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.hero-lead {
  max-width: 760px;
  margin-bottom: 28px;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(18px, 2vw, 23px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 42px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 6px;
  font-weight: 800;
}

.button.primary {
  color: #041a1d;
  background: var(--cyan);
}

.button.secondary {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(100px, 1fr));
  gap: 12px;
  max-width: 800px;
}

.hero-metrics div {
  padding: 18px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
}

.hero-metrics strong {
  display: block;
  color: var(--cyan);
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1.1;
}

.hero-metrics span {
  color: rgba(255, 255, 255, 0.74);
  font-size: 13px;
}

.hero-panel {
  align-self: center;
  padding: 26px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.06)),
    rgba(5, 20, 28, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.3);
}

.hero-visual,
.module-visual,
.product-visual,
.wide-visual,
.data-visual {
  position: relative;
  display: block;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(24, 214, 194, 0.18), rgba(47, 116, 255, 0.08)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.08) 0 1px, transparent 1px 28px),
    #0d2431;
  border: 1px solid rgba(24, 214, 194, 0.24);
  border-radius: 8px;
  background-position: center;
  background-size: cover;
}

.hero-visual::before,
.module-visual::before,
.product-visual::before,
.wide-visual::before,
.data-visual::before {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  color: rgba(255, 255, 255, 0.72);
  content: "图片待生成";
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.hero-visual {
  aspect-ratio: 16 / 10;
  margin-bottom: 22px;
}

.hero-image {
  background-image:
    linear-gradient(135deg, rgba(24, 214, 194, 0.18), rgba(47, 116, 255, 0.08)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.08) 0 1px, transparent 1px 28px),
    url("./assets/hero-compute-room.webp");
}

.gpu-image {
  background-image:
    linear-gradient(135deg, rgba(24, 214, 194, 0.2), rgba(215, 169, 75, 0.12)),
    url("./assets/gpu-resource-pool.webp");
}

.coolhub-image {
  background-image:
    linear-gradient(135deg, rgba(24, 214, 194, 0.18), rgba(47, 116, 255, 0.08)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.08) 0 1px, transparent 1px 28px),
    url("./assets/coolhub-appliance.webp");
}

.industry-image {
  background-image:
    linear-gradient(135deg, rgba(24, 214, 194, 0.14), rgba(47, 116, 255, 0.1)),
    url("./assets/industry-ai-scenes.webp");
}

.data-image {
  background-image:
    linear-gradient(135deg, rgba(255, 255, 255, 0.72), rgba(223, 248, 244, 0.88)),
    url("./assets/data-assetization.webp");
}

.panel-top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 13px;
}

.panel-top b {
  color: var(--cyan);
}

.compute-stack {
  display: grid;
  gap: 16px;
}

.compute-stack span {
  position: relative;
  display: block;
  padding: 12px 14px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  font-size: 14px;
}

.compute-stack span::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--w);
  content: "";
  background: linear-gradient(90deg, rgba(24, 214, 194, 0.22), transparent);
}

.compute-stack span {
  isolation: isolate;
}

.panel-bottom {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 30px;
}

.panel-bottom p {
  margin: 0;
  padding: 16px;
  color: rgba(255, 255, 255, 0.8);
  background: rgba(24, 214, 194, 0.08);
  border: 1px solid rgba(24, 214, 194, 0.18);
  border-radius: 6px;
  font-size: 14px;
}

section:not(.hero) {
  padding: clamp(60px, 8vw, 96px) clamp(20px, 5vw, 72px);
}

.section-heading {
  max-width: 850px;
  margin-bottom: 36px;
}

.section-heading h2 {
  margin-bottom: 14px;
  color: var(--ink);
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.16;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow) {
  max-width: 760px;
  color: var(--muted);
  font-size: 17px;
}

.inverted h2,
.inverted p:not(.eyebrow) {
  color: var(--white);
}

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

.position-grid article,
.business-card,
.scenario-grid article,
.case-grid article {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 26px rgba(14, 34, 48, 0.05);
}

.position-grid article {
  padding: 26px;
}

.position-grid span,
.business-card span,
.process span {
  color: var(--cyan-dark);
  font-size: 13px;
  font-weight: 900;
}

.position-grid h3,
.business-card h3,
.scenario-grid h3,
.process h3,
.case-grid h3 {
  margin: 8px 0 8px;
  font-size: 21px;
}

.position-grid p,
.business-card p,
.scenario-grid p,
.process p,
.case-grid p {
  margin-bottom: 0;
  color: var(--muted);
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
}

.business-card {
  grid-column: span 2;
  min-height: 250px;
  padding: 26px;
}

.business-card.featured {
  grid-column: span 4;
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(24, 214, 194, 0.22), rgba(47, 116, 255, 0.12)),
    #0d2431;
  border-color: rgba(24, 214, 194, 0.24);
}

.business-card.featured p,
.business-card.featured li {
  color: rgba(255, 255, 255, 0.78);
}

.business-card ul,
.product-card ul {
  display: grid;
  gap: 8px;
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}

.business-card li,
.product-card li {
  position: relative;
  padding-left: 16px;
  color: var(--muted);
}

.business-card li::before,
.product-card li::before {
  position: absolute;
  top: 0.68em;
  left: 0;
  width: 6px;
  height: 6px;
  content: "";
  background: var(--cyan);
  border-radius: 50%;
}

.compute-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(460px, 1fr);
  gap: 34px;
  align-items: start;
}

.compute-copy {
  padding: 30px;
  background: #eef7f7;
  border: 1px solid #cfe6e4;
  border-radius: 8px;
}

.module-visual {
  aspect-ratio: 16 / 9;
  margin-bottom: 24px;
  background:
    linear-gradient(135deg, rgba(24, 214, 194, 0.2), rgba(215, 169, 75, 0.12)),
    #0d2431;
}

.compute-copy h3 {
  margin-bottom: 12px;
  font-size: 26px;
}

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

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.tag-list span,
.model-list span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  color: #053236;
  background: #dff8f4;
  border: 1px solid #bce9e3;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 700;
}

.resource-table {
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.table-row {
  display: grid;
  grid-template-columns: 1fr 1.3fr 0.8fr;
  min-height: 62px;
  border-bottom: 1px solid var(--line);
}

.table-row:last-child {
  border-bottom: 0;
}

.table-row span {
  display: flex;
  align-items: center;
  padding: 14px 18px;
}

.table-head {
  color: var(--white);
  background: var(--ink-2);
  font-weight: 800;
}

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

.product-card {
  padding: 30px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
}

.product-visual {
  aspect-ratio: 16 / 10;
  margin-bottom: 24px;
}

.product-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 26px;
}

.product-head span {
  color: var(--cyan);
  font-size: 22px;
  font-weight: 900;
}

.product-head b {
  max-width: 220px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 14px;
  text-align: right;
}

.product-card h3 {
  font-size: 28px;
}

.product-card p,
.product-card li {
  color: rgba(255, 255, 255, 0.74);
}

.models-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 28px;
}

.wide-visual {
  aspect-ratio: 18 / 7;
  margin: 0 0 28px;
  background:
    linear-gradient(135deg, rgba(24, 214, 194, 0.14), rgba(47, 116, 255, 0.1)),
    #132734;
}

.model-list {
  display: flex;
  align-content: flex-start;
  flex-wrap: wrap;
  gap: 10px;
}

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

.scenario-grid article {
  padding: 22px;
}

.process {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}

.data-visual {
  aspect-ratio: 18 / 6;
  margin: -8px 0 28px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.72), rgba(223, 248, 244, 0.88)),
    #eef7f7;
  border-color: #cfe6e4;
}

.data-visual::before {
  color: var(--cyan-dark);
}

.process div {
  padding: 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.process h3 {
  font-size: 19px;
}

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

.case-grid article {
  padding: 26px;
}

.case-grid strong {
  display: block;
  color: var(--cyan-dark);
  font-size: 34px;
  line-height: 1;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(460px, 1fr);
  gap: 36px;
  align-items: start;
}

.contact-copy h2 {
  max-width: 600px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.16;
}

.contact-copy p:not(.eyebrow) {
  max-width: 620px;
  color: rgba(255, 255, 255, 0.74);
  font-size: 17px;
}

.contact-placeholder {
  display: grid;
  gap: 10px;
  margin-top: 28px;
}

.contact-placeholder span {
  color: rgba(255, 255, 255, 0.78);
}

.contact-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
}

.contact-form label {
  display: grid;
  gap: 8px;
}

.contact-form span {
  color: rgba(255, 255, 255, 0.78);
  font-size: 13px;
  font-weight: 800;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  color: var(--white);
  background: rgba(4, 19, 27, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  font: inherit;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(255, 255, 255, 0.42);
}

.contact-form textarea {
  min-height: 110px;
  resize: vertical;
}

.contact-form .wide,
.contact-form button {
  grid-column: 1 / -1;
}

.contact-form button {
  min-height: 48px;
  color: #041a1d;
  background: var(--cyan);
  border: 0;
  border-radius: 6px;
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 24px clamp(20px, 5vw, 72px);
  color: rgba(255, 255, 255, 0.66);
  background: #061018;
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 1080px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero,
  .compute-layout,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-panel {
    align-self: stretch;
  }

  .business-card,
  .business-card.featured {
    grid-column: span 3;
  }

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

@media (max-width: 760px) {
  .site-header {
    position: relative;
  }

  .brand {
    min-width: 0;
  }

  .brand small {
    display: none;
  }

  .nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    overflow: visible;
    white-space: normal;
  }

  .nav a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 36px;
    padding: 0 8px;
    background: #f3f7f8;
    border-radius: 6px;
    font-size: 13px;
    text-align: center;
  }

  .nav .nav-cta {
    color: #062326;
    background: var(--cyan);
  }

  .hero {
    padding-top: 44px;
  }

  h1 {
    max-width: calc(100vw - 48px);
    font-size: clamp(32px, 10vw, 38px);
    line-height: 1.12;
    word-break: keep-all;
  }

  .hero-lead {
    max-width: 100%;
    font-size: 17px;
    overflow-wrap: anywhere;
    word-break: normal;
  }

  .hero-panel {
    max-width: calc(100vw - 48px);
  }

  .panel-top,
  .panel-bottom {
    display: grid;
    grid-template-columns: 1fr;
    text-align: left;
  }

  .panel-top b {
    margin-top: 4px;
  }

  .wide-visual,
  .data-visual {
    aspect-ratio: 4 / 3;
  }

  .hero-metrics,
  .position-grid,
  .product-grid,
  .models-layout,
  .scenario-grid,
  .process,
  .case-grid,
  .contact-form {
    grid-template-columns: 1fr;
  }

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

  .business-card,
  .business-card.featured {
    grid-column: auto;
  }

  .table-row {
    grid-template-columns: 1fr;
    padding: 12px 0;
  }

  .table-head {
    display: none;
  }

  .table-row span {
    padding: 6px 16px;
  }

  .product-head {
    display: block;
  }

  .product-head b {
    display: block;
    max-width: none;
    margin-top: 6px;
    text-align: left;
  }

  .contact {
    gap: 24px;
  }

  .site-footer {
    display: block;
  }

  .site-footer p + p {
    margin-top: 6px;
  }
}