:root {
  --primary: #3a4fc5;
  --ink: #111827;
  --muted: #667085;
  --line: #e4e7ee;
  --paper: #f7f8fc;
  --navy: #090f26;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
  background: #fff;
}
a { text-decoration: none; color: inherit; touch-action: manipulation; }
a:focus-visible, summary:focus-visible { outline: 3px solid #8192f0; outline-offset: 5px; }
.wrap { width: calc(100% - 96px); max-width: 1240px; margin: auto; }
.header { position: sticky; top: 0; z-index: 20; background: #fffffff2; border-bottom: 1px solid var(--line); backdrop-filter: blur(16px); }
.nav { height: 64px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; }
.brand img { width: 100px; height: auto; object-fit: contain; }
nav { display: flex; gap: 34px; }
nav a { color: #475467; font-size: 13px; padding: 12px 0; }
nav a:hover, .text-link:hover { color: var(--primary); }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  height: 32px;
  min-height: 32px;
  padding: 4px 12px;
  border: 0;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  color: #fff;
  background: var(--primary);
  transition: background .2s, box-shadow .2s;
}
.button:hover { background: #3042aa; box-shadow: 0 4px 16px #3a4fc526; }
.button.small { font-size: 13px; }
.hero { background: var(--navy); position: relative; overflow: hidden; isolation: isolate; }
.hero-inner { position: relative; min-height: 420px; display: flex; align-items: center; }
.hero-copy { position: relative; z-index: 3; padding: 38px 0; width: 75%; text-align: left; margin-left: clamp(24px, 5vw, 72px); }
.eyebrow { color: var(--primary); font-size: 11px; letter-spacing: 1.7px; font-weight: 600; margin: 0 0 18px; }
.hero .eyebrow { color: #c6ceff; }
.eyebrow span, .live-dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: currentColor; margin-right: 7px; }
.hero h1 { color: #fff; font-size: 44px; line-height: 1.35; letter-spacing: -.8px; font-weight: 550; margin: 0 0 20px; }
.accent { background: linear-gradient(110deg, #a1b1ff, #edf1ff); background-clip: text; color: transparent; }
.intro { color: #b3bdd5; font-size: 14px; line-height: 1.9; margin: 0 0 26px; }
.actions { display: flex; align-items: center; justify-content: flex-start; gap: 24px; }
.hero .button { background: #4c61da; border: 0; }
.hero .button:hover { background: #5b70e6; box-shadow: 0 0 28px #6076ef55; }
.text-link { font-size: 13px; color: #d8e0fa; }
.text-link span { margin-left: 10px; }
.hero-note { color: #909dbd; font-size: 11px; letter-spacing: 1.3px; margin: 24px 0 0; }
.hero-art { position: absolute; margin: 0; inset: 0 -100px; z-index: 0; }
.hero-art::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, var(--navy), #090f26df 22%, #090f2640 48%, transparent 75%); }
.hero-art img { width: 100%; height: 100%; object-fit: cover; animation: orbit-drift 18s ease-in-out infinite alternate; }
.hero-art figcaption { position: absolute; z-index: 2; right: 125px; bottom: 34px; color: #d6defc; background: #101a388c; border: 1px solid #7285d338; backdrop-filter: blur(12px); border-radius: 5px; padding: 7px 12px; font-size: 11px; letter-spacing: .6px; }
.live-dot { color: #a7b8ff; box-shadow: 0 0 10px #7a93ff; }
.hero-footer { position: relative; z-index: 4; border-top: 1px solid #c2ccff24; display: flex; justify-content: space-between; align-items: center; min-height: 48px; color: #a3b0d1; font-size: 10px; letter-spacing: 1.5px; }
.hero-footer a { font-size: 11px; letter-spacing: 0; padding: 10px 0; }
.hero-footer a span { margin-left: 18px; }
.principles { display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); padding: 20px 0; gap: 16px; }
.principles>span { color: var(--muted); font-size: 11px; }
.principles p { margin: 0; font-size: 13px; font-weight: 500; }
.principles b { color: #c8cddc; font-weight: 400; }
.section { padding-top: 72px; padding-bottom: 72px; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 32px; margin-bottom: 32px; }
h2 { font-size: 26px; font-weight: 550; line-height: 1.5; letter-spacing: -.5px; margin: 0; }
.section-heading .eyebrow { margin-bottom: 12px; }
.section-heading>p { font-size: 13px; color: var(--muted); margin: 0 0 4px; }
.capabilities { display: grid; grid-template-columns: 1.35fr 1fr 1fr; gap: 16px; }
.feature { position: relative; overflow: hidden; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 8px; padding: 24px; background: #fff; min-height: 294px; transition: border-color .25s, box-shadow .25s; }
.feature::before { content: ""; position: absolute; top: 0; left: 24px; right: 24px; height: 2px; background: linear-gradient(90deg, #3a4fc5, #ccd5ff); transform: scaleX(0); transform-origin: left; transition: transform .3s; }
.feature:hover { border-color: #a7b2e7; box-shadow: 0 8px 28px #293b8110; }
.feature:hover::before { transform: scaleX(1); }
.feature-wide { background: linear-gradient(145deg, #f8f9ff, #eef1ff); }
.index { font-size: 10px; letter-spacing: 1.25px; color: var(--primary); font-weight: 600; }
h3 { font-size: 17px; font-weight: 550; line-height: 1.6; margin: 20px 0 10px; }
.feature p, .scenario-grid p, .steps p { font-size: 13px; line-height: 1.9; color: var(--muted); margin: 0; }
.feature-tag { margin-top: auto; padding-top: 20px; color: #6b7390; font-size: 10px; letter-spacing: .8px; }

.scenario-section { background: var(--paper); border-block: 1px solid #eceff6; }
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: start; }
.scenario-grid article { min-width: 0; }
.scenario-grid article:nth-child(2) { padding-top: 0; }
.scenario-grid article:nth-child(3) { padding-top: 0; }
.scenario-image { width: 100%; height: auto; aspect-ratio: 4/3; object-fit: cover; display: block; border-radius: 6px; margin-bottom: 22px; background: #e3e7f3; transition: filter .3s, transform .3s; }
.scenario-grid article:hover .scenario-image { filter: saturate(1.12); transform: translateY(-4px); }
.scenario-grid h3 { font-size: 19px; margin: 14px 0 12px; }
.scenario-grid a { display: inline-flex; align-items: center; gap: 24px; min-height: 44px; color: var(--primary); font-size: 12px; margin-top: 16px; }
.steps { padding: 0; margin: 0 0 30px; list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.steps li { position: relative; border-top: 1px solid var(--line); padding-top: 20px; }
.step-number { font: 12px monospace; color: var(--primary); }
.steps h3 { margin: 10px 0; }
.guide { border-top: 1px solid var(--line); }
.guide:last-child { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-size: 13px; min-height: 48px; padding: 12px 4px; }
details p { margin: 0; padding: 0 24px 20px; font-size: 13px; max-width: 850px; color: var(--muted); }
.closing { position: relative; overflow: hidden; padding: 32px 40px; border: 1px solid #dfe4f7; border-radius: 8px; background: linear-gradient(#00000066, #00000066), #090f26 url("/local-ui/portal/assets/yunshu-portal-closing-banner.webp") center / cover no-repeat; color:#fff; border-color:#1e2e59; display: flex; justify-content: space-between; align-items: center; }
.closing>div, .closing>a { position: relative; z-index: 1; }
.closing h2 { font-size: 24px; }
.closing .eyebrow { font-size: 10px; }
.footer { padding-top: 32px; padding-bottom: 28px; display: flex; align-items: center; justify-content: space-between; }
.footer p, .footer>a:last-child { font-size: 11px; color: var(--muted); }
.skip { position: fixed; top: -100px; left: 15px; padding: 10px; background: #fff; z-index: 99; }.skip:focus { top: 10px; }
@keyframes orbit-drift { from { transform: scale(1); } to { transform: scale(1.045) translateX(-8px); } }
@keyframes data-flow { from { transform: translateX(-10px); } to { transform: translateX(120px); } }
@media(min-width:1500px) { .hero-inner { min-height: 440px; } }
@media(max-width:1000px) {
  .wrap { width: calc(100% - 48px); }
  .hero-art { right: -24px; left: 12%; }
  .hero-art figcaption { right: 30px; }
  .hero-copy { width: calc(100% - 24px); margin-left:24px; }
  .hero h1 { font-size: 38px; }
  .capabilities { grid-template-columns: 1fr 1fr; }
  .feature-wide { grid-column: span 2; }
  .scenario-grid { gap: 18px; }
  .scenario-grid h3 { font-size: 17px; }
  .scenario-grid .index { letter-spacing: .4px; }
}
@media(max-width:680px) {
  .wrap { width: calc(100% - 40px); }
  .nav { height: 60px; flex-wrap: wrap; }
  .brand img { width: 94px; }
  nav { order: 3; width: 100%; justify-content: space-between; gap: 18px; }
  nav a { font-size: 12px; padding: 10px 0; }
  .header { padding-bottom: 40px; }
  .button.small { font-size: 12px; }
  .hero-inner { min-height: 470px; align-items: start; }
  .hero-copy { width: 100%; padding: 32px 0; margin-left:12px; }
  .hero h1 { font-size: 34px; }
  .hero .intro { font-size: 13px; }
  .hero-art { inset: 150px -20px 0; }
  .hero-art::after { background: linear-gradient(180deg, var(--navy), #090f2680 35%, #090f2600 75%); }
  .hero-art img { object-position: 70% center; }
  .hero-art figcaption { right: 20px; bottom: 18px; font-size: 10px; }
  .hero-footer>span { font-size: 8px; max-width: 220px; letter-spacing: .6px; }
  .hero-footer a { font-size: 10px; }
  .hero-footer a span { margin-left: 8px; }
  .hero-note { margin-top: 18px; font-size: 10px; }
  .actions { gap: 20px; }
  .text-link { font-size: 12px; }
  .principles { flex-wrap: wrap; gap: 12px; padding: 16px 0; }
  .principles>span { width: 100%; }
  .principles p { font-size: 11px; }
  .section { padding: 48px 0; }
  .section-heading { display: block; margin-bottom: 26px; }
  h2 { font-size: 23px; }
  .section-heading>p { margin-top: 16px; font-size: 12px; }
  .capabilities, .scenario-grid, .steps { grid-template-columns: 1fr; gap: 16px; }
  .feature-wide { grid-column: auto; }
  .feature { min-height: 260px; padding: 22px; }
  .scenario-grid article:nth-child(n) { padding: 0 0 24px; }
  .scenario-grid article+article { border-top: 1px solid var(--line); padding-top: 24px; }
  .scenario-image { max-height: 280px; margin-bottom: 18px; }
  .scenario-grid h3 { font-size: 18px; }
  .steps { gap: 24px; }
  .closing { padding: 28px 24px; display: block; }
  .closing h2 { font-size: 23px; }
  .closing .button { margin-top: 24px; }
  .footer { flex-wrap: wrap; gap: 12px; }
  .footer p { order: 3; width: 100%; margin: 0; }
  .desktop { display: none; }
}
@media(pointer:coarse) { .button { min-height: 36px; height: 36px; } }
@media(prefers-reduced-motion:reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

.hero .intro { margin-bottom:20px; }
.hero .hero-note { margin-top:18px; }
.capabilities { grid-template-columns:repeat(3, 1fr); }
.feature { padding:24px; min-height:330px; }
.feature-wide { background:#fff; }
.feature h3, .feature:not(.feature-wide) h3 { margin:16px 0 10px; }

.feature-tag { order:5; padding-top:14px; }
.feature p { min-height:50px; }
.scenario-grid article { display:flex; flex-direction:column; height:100%; }
.scenario-grid p { flex:1; }
.scenario-grid a { align-self:flex-start; }
@media(max-width:1000px) {
  .feature-wide { grid-column:auto; }
  .feature { padding:20px; }
}
@media(max-width:680px) {
  .hero h1 { font-size:30px; }
    .hero-copy { padding:34px 0; }
  .hero .intro { max-width:300px; margin:0 0 20px; }
  .hero .eyebrow { font-size:10px; letter-spacing:1px; }
  .hero-art figcaption { right:50%; transform:translateX(50%); white-space:nowrap; }
  .hero-art img { object-position:65% center; }
  .capabilities { grid-template-columns:1fr; }
  .feature { min-height:0; }
  .feature p { min-height:0; }
}

@media(min-width:681px) {
  .hero h1, .hero .intro { white-space:nowrap; }
}

.capability-art {
  order:4;
  width:100%;
  height:170px;
  margin-top:18px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.capability-art img { display:block; width:100%; height:auto; max-height:184px; }
.feature { background:linear-gradient(165deg, #fff 55%, #f8faff); }
.feature:hover { box-shadow:0 8px 28px #293b810b; }
@media(max-width:1000px) and (min-width:681px) {
  .capability-art { height:140px; }
}

.step-heading { display:flex; align-items:center; justify-content:space-between; margin-bottom:14px; }
.step-icon { display:inline-flex; align-items:center; justify-content:center; width:36px; height:36px; border-radius:9px; color:var(--primary); background:#eef2ff; }
.step-icon svg { width:20px; height:20px; stroke:currentColor; stroke-width:1.5; stroke-linecap:round; stroke-linejoin:round; }
.step-number { color:#9ca9cc; }

.closing { gap:24px; }
.closing>div { flex-shrink:0; }
.closing>.button { flex-shrink:0; }
@media(max-width:1000px) and (min-width:681px) {
  .closing { padding:28px 24px; gap:16px; }
  .closing h2 { font-size:20px; }
  }
@media(max-width:680px) {
    .closing .button { margin-top:16px; }
}

.closing .eyebrow { color:#b8c7ff; }
.closing .button { background:#4c61da; }
.closing .button:hover { background:#5b70e6; }
@media(max-width:680px) {
  .closing { background-position:60% center; }
  .closing>div { max-width:90%; }
}