:root {
  color-scheme: light;
  --ink: #0b1117;
  --ink-soft: #27313b;
  --muted: #66727e;
  --paper: #f4f7f9;
  --surface: #ffffff;
  --line: #d9e1e7;
  --line-strong: #bec9d2;
  --blue: #1478ff;
  --blue-dark: #075fc7;
  --cyan: #2eb8d6;
  --green: #0ea47a;
  --amber: #e79a18;
  --danger: #d54b43;
  --shadow-sm: 0 8px 24px rgba(15, 27, 38, 0.07);
  --shadow-lg: 0 28px 70px rgba(6, 15, 24, 0.16);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 86px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body,
button,
input {
  font: inherit;
}

img,
svg {
  display: block;
}

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

button,
input {
  color: inherit;
}

button {
  border: 0;
}

::selection {
  background: rgba(20, 120, 255, 0.2);
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  border-radius: 6px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-lg);
  transform: translateY(-150%);
  transition: transform 160ms ease;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.section {
  padding: 104px 0;
}

.section-inner {
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
}

.section-heading {
  max-width: 720px;
}

.section-heading.heading-row {
  display: flex;
  max-width: none;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 46px;
}

.section-heading.heading-row > div {
  max-width: 760px;
}

.section-heading.heading-row > p {
  max-width: 420px;
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 15px;
}

.section-index {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-heading h2,
.closing-inner h2 {
  margin: 0;
  font-size: 44px;
  line-height: 1.14;
  letter-spacing: -0.025em;
}

.section-heading p {
  margin: 18px 0 0;
  color: var(--muted);
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 7px;
  font-size: 15px;
  font-weight: 750;
  line-height: 1;
  cursor: pointer;
  transition: transform 150ms ease, background-color 150ms ease, border-color 150ms ease, box-shadow 150ms ease;
}

.button svg,
.icon-button svg,
.header-cta svg {
  width: 18px;
  height: 18px;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 12px 30px rgba(20, 120, 255, 0.24);
}

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

.button-secondary {
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.button-secondary:hover {
  border-color: rgba(255, 255, 255, 0.38);
  background: rgba(255, 255, 255, 0.1);
}

.button-download {
  width: fit-content;
  border-color: var(--line);
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 4px 12px rgba(15, 27, 38, 0.05);
}

.button-download:hover {
  border-color: var(--blue);
  color: var(--blue-dark);
}

.button-wide {
  width: 100%;
  margin-top: auto;
}

/* Header */
.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  border-bottom: 1px solid rgba(217, 225, 231, 0.85);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  width: min(1280px, calc(100% - 40px));
  min-height: 70px;
  align-items: center;
  gap: 32px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 11px;
}

.brand-mark {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  overflow: hidden;
  border-radius: 10px;
  background: #fff;
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-text strong {
  font-size: 16px;
  letter-spacing: -0.015em;
}

.brand-text small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  flex: 1 1 auto;
  align-items: center;
  justify-content: center;
  gap: 26px;
}

.main-nav a {
  position: relative;
  padding: 22px 0;
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 650;
}

.main-nav a::after {
  position: absolute;
  right: 0;
  bottom: 14px;
  left: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--blue);
  content: "";
  transform: scaleX(0);
  transition: transform 160ms ease;
}

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

.main-nav a:hover::after {
  transform: scaleX(1);
}

.header-cta {
  display: inline-flex;
  flex: 0 0 auto;
  min-height: 38px;
  align-items: center;
  gap: 8px;
  padding: 0 14px;
  border: 1px solid var(--ink);
  border-radius: 7px;
  background: var(--ink);
  color: #fff;
  font-size: 13px;
  font-weight: 750;
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: #fff;
}

.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.16;
  background-image:
    repeating-linear-gradient(90deg, transparent 0, transparent 79px, rgba(255, 255, 255, 0.25) 80px),
    repeating-linear-gradient(0deg, transparent 0, transparent 79px, rgba(255, 255, 255, 0.2) 80px);
  mask-image: linear-gradient(to bottom, black, transparent 96%);
}

.hero::after {
  position: absolute;
  right: -10%;
  bottom: -44%;
  width: 760px;
  height: 760px;
  border: 1px solid rgba(46, 184, 214, 0.22);
  border-radius: 50%;
  content: "";
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  width: min(1200px, calc(100% - 48px));
  min-height: 720px;
  grid-template-columns: minmax(0, 1.02fr) minmax(500px, 0.98fr);
  align-items: center;
  gap: 72px;
  margin: 0 auto;
  padding: 92px 0 86px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  color: #a9c5d8;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #1ed49e;
  box-shadow: 0 0 0 5px rgba(30, 212, 158, 0.12);
}

.hero h1 {
  margin: 0;
  font-size: 62px;
  line-height: 1.05;
  letter-spacing: -0.035em;
}

.hero h1 span {
  color: #68c5ff;
}

.hero-lede {
  max-width: 650px;
  margin: 28px 0 0;
  color: #b7c6d0;
  font-size: 18px;
  line-height: 1.82;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 50px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-facts div {
  padding: 20px 20px 20px 0;
}

.hero-facts div + div {
  padding-left: 22px;
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-facts dt {
  color: #8298a8;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.hero-facts dd {
  margin: 5px 0 0;
  color: #fff;
  font-size: 18px;
  font-weight: 750;
  letter-spacing: -0.015em;
}

/* Topology */
.topology-shell {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: var(--shadow-lg);
}

.topology-head,
.topology-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 20px;
}

.topology-head {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.topology-head > div {
  display: flex;
  flex-direction: column;
}

.topology-kicker {
  color: #7190a5;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.topology-head strong {
  margin-top: 2px;
  font-size: 15px;
}

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #a9c5d8;
  font-size: 11px;
  font-weight: 700;
}

.live-badge span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #1ed49e;
}

.topology-canvas {
  position: relative;
  min-height: 430px;
  background: rgba(3, 8, 13, 0.38);
}

.topology-grid {
  position: absolute;
  inset: 0;
  opacity: 0.24;
  background-image:
    linear-gradient(rgba(92, 161, 207, 0.2) 1px, transparent 1px),
    linear-gradient(90deg, rgba(92, 161, 207, 0.2) 1px, transparent 1px);
  background-size: 40px 40px;
}

.topology-node {
  position: absolute;
  z-index: 3;
  display: flex;
  width: 158px;
  min-height: 132px;
  flex-direction: column;
  justify-content: center;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 7px;
  background: #111c25;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.25);
}

.topology-node small {
  color: #7190a5;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.topology-node strong {
  margin-top: 8px;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.topology-node > span:last-child {
  margin-top: 3px;
  color: #a7bac7;
  font-size: 11px;
}

.node-icon {
  display: grid;
  width: 30px;
  height: 30px;
  margin-bottom: 11px;
  place-items: center;
  border-radius: 5px;
  background: rgba(20, 120, 255, 0.14);
  color: #67bdff;
}

.node-icon svg {
  width: 17px;
  height: 17px;
}

.node-csms {
  top: 52px;
  left: 34px;
}

.node-station {
  top: 52px;
  right: 34px;
}

.protocol-line {
  position: absolute;
  z-index: 2;
  color: #76a4c4;
}

.line-main {
  top: 118px;
  left: 190px;
  width: calc(100% - 380px);
  height: 1px;
  border-top: 1px dashed rgba(88, 172, 232, 0.72);
}

.line-main span {
  position: absolute;
  top: -30px;
  left: 50%;
  width: max-content;
  padding: 4px 8px;
  border: 1px solid rgba(88, 172, 232, 0.22);
  border-radius: 4px;
  background: #0d1720;
  font-size: 9px;
  font-weight: 750;
  letter-spacing: 0.04em;
  transform: translateX(-50%);
}

.line-main i,
.line-branch i {
  position: absolute;
  width: 7px;
  height: 7px;
  border: 2px solid #72c8ff;
  border-radius: 50%;
  background: #0b1117;
  box-shadow: 0 0 0 4px rgba(83, 183, 255, 0.1);
  animation: travel-x 3.2s ease-in-out infinite;
}

.line-main i {
  top: -4px;
  left: 0;
}

.line-branch {
  top: 184px;
  left: 50%;
  width: 1px;
  height: 88px;
  border-left: 1px dashed rgba(46, 184, 214, 0.76);
}

.line-branch i {
  top: 0;
  left: -4px;
  animation: travel-y 3.2s ease-in-out infinite;
}

.connector-row {
  position: absolute;
  z-index: 3;
  bottom: 34px;
  left: 50%;
  display: grid;
  width: 270px;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  transform: translateX(-50%);
}

.connector-node {
  display: flex;
  min-height: 70px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(46, 184, 214, 0.32);
  border-radius: 6px;
  background: rgba(18, 39, 49, 0.92);
}

.connector-node span {
  font-size: 13px;
  font-weight: 800;
}

.connector-node small {
  color: #7693a5;
  font-size: 9px;
}

.side-node {
  position: absolute;
  z-index: 4;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 5px;
  background: #121d26;
  color: #b6c7d2;
  font-size: 10px;
  font-weight: 750;
}

.side-node svg {
  width: 13px;
  height: 13px;
  color: #e8aa3f;
}

.side-ems {
  top: 236px;
  left: 34px;
}

.side-grid {
  top: 236px;
  left: 50%;
  transform: translateX(-50%);
}

.side-car {
  top: 236px;
  right: 34px;
}

.side-car svg {
  color: #37cba0;
}

.topology-foot {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #8da4b5;
  font-size: 10px;
  font-weight: 700;
}

.topology-foot span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.topology-foot svg {
  width: 13px;
  height: 13px;
  color: #4cc4a0;
}

@keyframes travel-x {
  0%,
  100% {
    left: 0;
  }
  50% {
    left: calc(100% - 7px);
  }
}

@keyframes travel-y {
  0%,
  100% {
    top: 0;
  }
  50% {
    top: calc(100% - 7px);
  }
}

/* Overview */
.overview {
  background: var(--surface);
}

.overview-layout,
.updates-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
  gap: 76px;
}

.overview-copy > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.85;
}

.overview-copy > p + p {
  margin-top: 20px;
}

.definition-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin-top: 40px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.definition-strip div {
  padding: 22px 20px 22px 0;
}

.definition-strip div + div {
  padding-left: 22px;
  border-left: 1px solid var(--line);
}

.definition-strip span {
  color: var(--blue-dark);
  font-size: 14px;
  font-weight: 800;
}

.definition-strip p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

/* Capabilities */
.capabilities-section {
  background: var(--paper);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.capability-card {
  position: relative;
  display: flex;
  min-height: 288px;
  flex-direction: column;
  align-items: flex-start;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 1px 0 rgba(15, 27, 38, 0.02);
  transition: transform 170ms ease, border-color 170ms ease, box-shadow 170ms ease;
}

.capability-card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-sm);
  transform: translateY(-3px);
}

.card-number {
  position: absolute;
  top: 20px;
  right: 22px;
  color: #a7b3bd;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.capability-icon {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 7px;
}

.capability-icon svg {
  width: 20px;
  height: 20px;
}

.icon-blue {
  background: #eaf3ff;
  color: #0f6fdf;
}

.icon-green {
  background: #e7f8f2;
  color: #078761;
}

.icon-amber {
  background: #fff3de;
  color: #b66b00;
}

.capability-card h3 {
  margin: 24px 0 10px;
  font-size: 19px;
  letter-spacing: -0.015em;
}

.capability-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.72;
}

.tag-row {
  display: flex;
  gap: 5px;
  margin-top: auto;
  padding-top: 24px;
}

.tag-row span {
  display: grid;
  width: 25px;
  height: 25px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 850;
}

/* Modules */
.modules-section {
  background: #15212b;
  color: #fff;
}

.modules-section .section-index {
  color: #66c5ff;
}

.modules-section .heading-row > p {
  color: #9fb2c0;
}

.module-list {
  display: grid;
  overflow: hidden;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 1px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.1);
  list-style: none;
}

.module-list li {
  display: grid;
  min-height: 160px;
  grid-template-columns: 32px minmax(0, 1fr);
  grid-template-rows: auto auto auto;
  align-content: start;
  gap: 2px 12px;
  padding: 20px;
  background: #17242e;
}

.module-list li > span {
  display: grid;
  width: 30px;
  height: 30px;
  grid-row: 1 / 4;
  place-items: center;
  border: 1px solid rgba(102, 197, 255, 0.32);
  border-radius: 5px;
  color: #66c5ff;
  font-size: 12px;
  font-weight: 850;
}

.module-list strong {
  overflow: hidden;
  font-size: 14px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.module-list small {
  color: #8fa5b5;
  font-size: 11px;
}

.module-list p {
  grid-column: 2;
  margin: 9px 0 0;
  color: #afc0cc;
  font-size: 12px;
  line-height: 1.6;
}

/* Documents */
.documents-section {
  background: var(--surface);
}

.document-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.search-box {
  display: flex;
  width: min(430px, 100%);
  min-height: 46px;
  align-items: center;
  gap: 10px;
  padding: 0 15px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fbfcfd;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.search-box:focus-within {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(20, 120, 255, 0.1);
}

.search-box svg {
  width: 17px;
  height: 17px;
  color: #82909c;
}

.search-box input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  font-size: 14px;
}

.search-box input::placeholder {
  color: #93a0aa;
}

.filter-group {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #f7f9fb;
}

.filter-button {
  min-height: 36px;
  padding: 0 15px;
  border-radius: 5px;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
  cursor: pointer;
}

.filter-button.is-active {
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 2px 8px rgba(15, 27, 38, 0.09);
}

.document-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 13px;
}

.document-summary p {
  margin: 0;
}

.document-summary p span {
  margin-left: 8px;
  color: #87939d;
}

.document-summary strong {
  color: var(--ink);
}

.table-frame {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.document-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.document-table th {
  padding: 13px 16px;
  background: #f2f5f7;
  color: #6b7782;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-align: left;
  text-transform: uppercase;
}

.document-table th:nth-child(1) {
  width: 34%;
}

.document-table th:nth-child(2) {
  width: 23%;
}

.document-table th:nth-child(3) {
  width: 10%;
}

.document-table th:nth-child(4) {
  width: 11%;
}

.document-table th:nth-child(5) {
  width: 10%;
}

.document-table th:nth-child(6) {
  width: 12%;
}

.document-table td {
  padding: 16px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 13px;
  vertical-align: middle;
}

.document-table tbody tr {
  transition: background-color 140ms ease;
}

.document-table tbody tr:hover {
  background: #fafcfd;
}

.document-table tbody tr.is-hidden {
  display: none;
}

.file-name.is-disabled {
  cursor: default;
}

.file-name.is-disabled strong {
  color: #6e7a84;
}

.file-name {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 12px;
}

.file-name > span:last-child {
  min-width: 0;
}

.file-name strong,
.file-name small {
  display: block;
}

.file-name strong {
  color: var(--ink);
  font-size: 14px;
  letter-spacing: -0.01em;
}

.file-name small {
  overflow: hidden;
  margin-top: 2px;
  color: #75828d;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 10px;
  line-height: 1.5;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-name:hover strong {
  color: var(--blue-dark);
}

.file-name.is-disabled:hover strong {
  color: #6e7a84;
}

.file-icon {
  display: grid;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  place-items: center;
  border-radius: 7px;
}

.file-icon svg {
  width: 18px;
  height: 18px;
}

.pdf-icon {
  background: #fff0ee;
  color: #cc443b;
}

.archive-icon {
  background: #eaf3ff;
  color: #0f6fdf;
}

.cn-icon {
  background: #edf8f5;
  color: #078761;
}

.type-badge {
  display: inline-flex;
  min-height: 25px;
  align-items: center;
  padding: 0 8px;
  border: 1px solid #f0c6c1;
  border-radius: 4px;
  background: #fff5f3;
  color: #b83b33;
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.05em;
}

.type-badge.archive-badge {
  border-color: #bfd8fb;
  background: #eef5ff;
  color: #0b63c7;
}

.type-badge.cn-badge {
  border-color: #bde3d8;
  background: #effaf7;
  color: #087b5a;
}

.file-actions {
  display: flex;
  align-items: center;
  gap: 7px;
}

.pending-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #7d8993;
  font-size: 12px;
  font-weight: 750;
}

.pending-action svg {
  width: 14px;
  height: 14px;
}

.icon-button {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: #52606b;
  transition: border-color 140ms ease, color 140ms ease, background-color 140ms ease;
}

.icon-button:hover {
  border-color: var(--blue);
  background: #f2f7ff;
  color: var(--blue-dark);
}

.document-table .button-download {
  min-height: 36px;
  gap: 7px;
  padding: 0 13px;
  font-size: 12px;
}

.document-table .button-download svg {
  width: 15px;
  height: 15px;
}

.empty-state {
  display: flex;
  min-height: 220px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  text-align: center;
}

.empty-state svg {
  width: 26px;
  height: 26px;
  margin-bottom: 12px;
}

.empty-state strong {
  color: var(--ink);
}

.empty-state span {
  margin-top: 4px;
  font-size: 13px;
}

/* Packages */
.packages-section {
  background: var(--paper);
}

.package-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.package-card {
  position: relative;
  display: flex;
  min-height: 360px;
  flex-direction: column;
  overflow: hidden;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.package-card::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 4px;
  content: "";
}

.package-blue::before {
  background: var(--blue);
}

.package-green::before {
  background: var(--green);
}

.package-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.package-icon {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 8px;
  background: #edf4ff;
  color: #0b6eda;
}

.package-green .package-icon {
  background: #e8f8f3;
  color: #078761;
}

.package-icon svg {
  width: 23px;
  height: 23px;
}

.package-format {
  color: #7b8792;
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.08em;
}

.package-card h3 {
  margin: 28px 0 12px;
  font-size: 25px;
  letter-spacing: -0.02em;
}

.package-card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.package-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 24px 0 28px;
  color: #6e7b86;
  font-size: 12px;
  font-weight: 650;
}

.package-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.package-meta svg {
  width: 14px;
  height: 14px;
}

/* Updates */
.updates-section {
  background: var(--surface);
}

.updates-layout .section-heading p {
  max-width: 390px;
}

.timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline::before {
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 108px;
  width: 1px;
  background: var(--line);
  content: "";
}

.timeline li {
  position: relative;
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr);
  gap: 36px;
  padding-bottom: 30px;
}

.timeline li:last-child {
  padding-bottom: 0;
}

.timeline time {
  padding-top: 1px;
  color: var(--ink);
  font-size: 12px;
  font-weight: 800;
}

.timeline li > div {
  position: relative;
  padding-left: 0;
}

.timeline li > div::before {
  position: absolute;
  top: 7px;
  left: -41px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--surface);
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 1px var(--blue);
  content: "";
}

.timeline strong {
  font-size: 15px;
}

.timeline p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 13px;
}

/* Closing */
.closing-band {
  padding: 74px 0;
  background: #15212b;
  color: #fff;
}

.closing-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 52px;
}

.closing-inner .section-index {
  color: #66c5ff;
}

.closing-inner h2 {
  font-size: 38px;
}

.closing-inner p {
  margin: 13px 0 0;
  color: #9fb2c0;
}

.solution-partner {
  max-width: 620px;
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.13);
}

.partner-label {
  color: #66c5ff;
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.1em;
}

.solution-partner h3 {
  margin: 5px 0 0;
  color: #fff;
  font-size: 22px;
  letter-spacing: -0.02em;
}

.solution-partner p {
  max-width: 560px;
  margin: 8px 0 14px;
  font-size: 14px;
  line-height: 1.75;
}

.solution-partner a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #66c5ff;
  font-size: 14px;
  font-weight: 800;
}

.solution-partner a:hover {
  color: #a5dcff;
}

.solution-partner svg {
  width: 15px;
  height: 15px;
}

.follow-block {
  display: flex;
  flex: 0 0 auto;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.follow-label {
  color: #9fb2c0;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.follow-grid {
  display: flex;
  gap: 12px;
}

.follow-grid figure {
  margin: 0;
  text-align: center;
}

.follow-grid img {
  width: 92px;
  height: 92px;
  padding: 5px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: #fff;
  object-fit: contain;
}

.follow-grid figcaption {
  margin-top: 6px;
  color: #8ea1af;
  font-size: 10px;
  font-weight: 700;
}

/* Footer */
.site-footer {
  padding: 40px 0;
  background: #0b1117;
  color: #8ea1af;
  font-size: 12px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 32px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand .brand-mark {
  width: 34px;
  height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-brand .brand-mark img {
  width: 100%;
  height: 100%;
}

.footer-brand strong,
.footer-brand span {
  display: block;
}

.footer-brand strong {
  color: #fff;
  font-size: 13px;
}

.footer-brand span {
  margin-top: 2px;
  font-size: 11px;
}

.footer-inner p {
  margin: 0;
}

.visit-counter {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 9px;
  color: #8ea1af;
  white-space: nowrap;
}

.visit-counter img {
  width: auto;
  height: 20px;
}

@media (max-width: 1120px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr) minmax(420px, 0.88fr);
    gap: 42px;
  }

  .hero h1 {
    font-size: 52px;
  }

  .capability-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .module-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

}

@media (max-width: 920px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 0 20px;
    padding: 10px 0 0;
  }

  .main-nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    gap: 24px;
    overflow-x: auto;
  }

  .main-nav a {
    flex: 0 0 auto;
    padding: 13px 0 14px;
  }

  .main-nav a::after {
    bottom: 8px;
  }

  .header-cta {
    margin-left: auto;
  }

  html {
    scroll-padding-top: 118px;
  }

  .hero-inner {
    min-height: 0;
    grid-template-columns: 1fr;
    padding: 72px 0;
  }

  .hero-copy {
    max-width: 760px;
  }

  .topology-shell {
    max-width: 680px;
  }

  .overview-layout,
  .updates-layout {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .section-heading.heading-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
  }

  .section-heading.heading-row > p {
    max-width: 640px;
  }

  .module-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .document-table th:nth-child(2),
  .document-table td:nth-child(2) {
    display: none;
  }

  .document-table th:nth-child(1) {
    width: 38%;
  }

  .document-table th:nth-child(3) {
    width: 12%;
  }

  .document-table th:nth-child(4) {
    width: 15%;
  }

  .document-table th:nth-child(5) {
    width: 13%;
  }

  .document-table th:nth-child(6) {
    width: 22%;
  }

  .closing-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 700px) {
  .section {
    padding: 76px 0;
  }

  .section-inner,
  .hero-inner {
    width: min(100% - 32px, 1200px);
  }

  .section-heading h2,
  .closing-inner h2 {
    font-size: 34px;
  }

  .brand-text small,
  .header-cta span {
    display: none;
  }

  .header-cta {
    width: 40px;
    padding: 0;
    justify-content: center;
  }

  .hero-inner {
    padding: 58px 0 62px;
  }

  .hero h1 {
    font-size: 42px;
  }

  .hero-lede {
    font-size: 16px;
  }

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

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

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

  .hero-facts div {
    padding: 16px 0;
  }

  .hero-facts div + div {
    padding-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    border-left: 0;
  }

  .topology-canvas {
    min-height: 520px;
  }

  .topology-node {
    width: 142px;
    min-height: 126px;
    padding: 15px;
  }

  .node-csms {
    top: 34px;
    left: 16px;
  }

  .node-station {
    top: 34px;
    right: 16px;
  }

  .line-main {
    top: 98px;
    left: 158px;
    width: calc(100% - 316px);
  }

  .line-main span {
    top: 16px;
    font-size: 8px;
  }

  .line-branch {
    top: 164px;
    height: 116px;
  }

  .side-ems {
    top: 214px;
    left: 16px;
  }

  .side-grid {
    top: 214px;
  }

  .side-car {
    top: 214px;
    right: 16px;
  }

  .connector-row {
    bottom: 28px;
  }

  .topology-foot {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .definition-strip {
    grid-template-columns: 1fr;
  }

  .definition-strip div {
    padding: 18px 0;
  }

  .definition-strip div + div {
    padding-left: 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

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

  .capability-card {
    min-height: 0;
  }

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

  .document-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .search-box {
    width: 100%;
  }

  .filter-group {
    align-self: flex-start;
  }

  .document-summary {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .table-frame {
    overflow: visible;
    border: 0;
  }

  .document-table,
  .document-table tbody,
  .document-table tr,
  .document-table td {
    display: block;
    width: 100%;
  }

  .document-table thead {
    display: none;
  }

  .document-table tr {
    overflow: hidden;
    margin-bottom: 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
  }

  .document-table td {
    display: grid;
    min-height: 45px;
    grid-template-columns: 78px minmax(0, 1fr);
    align-items: center;
    gap: 12px;
    padding: 11px 14px;
    border-top: 1px solid var(--line);
    font-size: 12px;
  }

  .document-table td:first-child {
    display: block;
    padding: 16px 14px;
    border-top: 0;
  }

  .document-table td::before {
    color: #7d8993;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }

  .document-table td:nth-child(2)::before {
    content: "内容";
  }

  .document-table td:nth-child(3)::before {
    content: "类型";
  }

  .document-table td:nth-child(4)::before {
    content: "日期";
  }

  .document-table td:nth-child(5)::before {
    content: "大小";
  }

  .document-table td:nth-child(6)::before {
    content: "操作";
  }

  .document-table td:nth-child(2) {
    display: grid;
  }

  .document-table td:nth-child(6) {
    align-items: center;
  }

  .file-name small {
    white-space: normal;
    word-break: break-all;
  }

  .timeline::before {
    left: 4px;
  }

  .timeline li {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 0 0 28px 26px;
  }

  .timeline li > div::before {
    left: -30px;
  }

  .follow-block {
    width: 100%;
    align-items: flex-start;
  }

  .follow-grid img {
    width: 82px;
    height: 82px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .visit-counter {
    justify-content: flex-start;
  }
}

@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;
  }
}