:root {
  color-scheme: light;
  --ink: #152234; --muted: #5b6a7b; --soft: #718096;
  --brand: #087f75; --brand-hover: #066b63; --brand-soft: #e8f7f3;
  --page: #fff; --panel: #fff; --tint: #f7fafb; --line: #e2eaed;
  --grid: rgba(25,128,117,.045); --header: rgba(255,255,255,.9);
  --shadow: 0 24px 65px rgba(20,53,67,.07);
}
html.dark {
  color-scheme: dark;
  --ink: #e7eef6; --muted: #adbbcb; --soft: #94a3b8;
  --brand: #50d4bc; --brand-hover: #7ae2ce; --brand-soft: #12352f;
  --page: #0b1422; --panel: #101c2d; --tint: #0e1928; --line: #26384b;
  --grid: rgba(81,212,188,.05); --header: rgba(11,20,34,.94);
  --shadow: 0 24px 65px rgba(0,0,0,.16);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 98px; }
body.home-page { margin: 0; background: var(--page); color: var(--ink); font-family: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif; -webkit-font-smoothing: antialiased; font-size: 15px; line-height: 1.75; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
button,a,summary { -webkit-tap-highlight-color: transparent; }
button:focus-visible,a:focus-visible,summary:focus-visible { outline: 3px solid #14b8a6; outline-offset: 5px; }
button:disabled { cursor: not-allowed; }
img,svg { display: block; }
svg { fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
p,h1,h2,h3,pre { margin: 0; }
[hidden] { display: none !important; }
code,pre { font-family: "SFMono-Regular",Consolas,"Liberation Mono",monospace; }
.wrap { width: min(1184px, calc(100% - 64px)); margin-inline: auto; }
.section { padding-block: 94px; }
.section-grid { background-color: var(--tint); background-image: linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px); background-size: 44px 44px; }
.skip-link { position: fixed; top: -90px; left: 20px; z-index: 200; padding: 10px 18px; background: var(--brand); color: var(--page); border-radius: 8px; }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 40; background: var(--header); backdrop-filter: blur(18px); border-bottom: 1px solid var(--line); }
.header-inner { height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-size: 22px; font-weight: 750; letter-spacing: -.6px; flex: none; }
.brand img { border-radius: 11px; box-shadow: 0 4px 9px rgba(6,37,57,.1); }
.main-nav { display: flex; align-items: center; gap: 29px; margin-left: auto; margin-right: 32px; font-size: 14px; color: var(--muted); }
.main-nav a:hover,.footer-main a:hover,.footer-bottom a:hover { color: var(--brand); }
.header-actions { display: flex; align-items: center; gap: 16px; }
.icon-button { width: 32px; height: 36px; display: grid; place-items: center; background: transparent; color: var(--muted); border: 0; padding: 6px; cursor: pointer; border-radius: 8px; }
.icon-button:hover { background: var(--brand-soft); color: var(--brand); }
.icon-button svg { width: 21px; height: 21px; }
.sun-icon { display: none; }
.dark .moon-icon { display: none; }
.dark .sun-icon { display: block; }
.header-login { font-size: 14px; font-weight: 600; white-space: nowrap; }
.header-login:hover { color: var(--brand); }
.nav-toggle { display: none; }
.hero { position: relative; overflow: clip; padding: 86px 0 0; }
.hero-glow { position: absolute; top: -60px; right: -160px; width: 680px; height: 660px; background: radial-gradient(ellipse,rgba(88,220,193,.2),transparent 66%); pointer-events: none; }
.hero-layout { position: relative; display: grid; grid-template-columns: 1.05fr 1fr; gap: 68px; align-items: center; }
.eyebrow { display: flex; align-items: center; gap: 10px; color: var(--brand); font-size: 13px; font-weight: 650; letter-spacing: .8px; margin-bottom: 17px; }
.small-line { width: 23px; height: 2px; background: currentColor; }
h1 { font-size: clamp(38px,4.1vw,55px); font-weight: 730; letter-spacing: -1.5px; line-height: 1.3; }
h1 span { color: var(--brand); }
.hero-description { max-width: 530px; font-size: 16px; color: var(--muted); line-height: 1.95; margin-top: 23px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 29px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 22px; min-height: 47px; padding: 11px 22px; border-radius: 11px; font-size: 14px; font-weight: 600; transition: background-color .18s,border-color .18s,box-shadow .18s; }
.button-primary { background: var(--brand); color: #fff; box-shadow: 0 7px 17px rgba(8,127,117,.12); }
.button-primary:hover { background: var(--brand-hover); box-shadow: 0 9px 22px rgba(8,127,117,.2); }
.dark .button-primary { color: #09221e; }
.button-secondary { background: var(--panel); border: 1px solid var(--line); }
.button-secondary:hover { border-color: var(--brand); }
.access-note { display: flex; align-items: flex-start; gap: 8px; color: var(--muted); font-size: 12px; margin-top: 17px; }
.note-dot { flex: none; margin-top: 8px; width: 5px; height: 5px; border-radius: 50%; background: #94a3b8; }
.hero-points { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 28px; font-size: 12px; color: var(--muted); }
.hero-points span { display: flex; align-items: center; gap: 5px; }
.hero-points svg { width: 16px; height: 16px; color: var(--brand); }
.connection-map { border: 1px solid var(--line); border-radius: 24px; background: var(--panel); padding: 25px 24px 20px; box-shadow: var(--shadow); }
.map-topline { display: flex; align-items: center; justify-content: space-between; gap: 12px; font-size: 14px; font-weight: 650; margin-bottom: 23px; }
.map-caption { font-size: 10px; font-weight: 400; color: var(--soft); letter-spacing: .5px; }
.map-tools { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 9px; }
.map-tool { display: flex; align-items: center; gap: 8px; min-width: 0; padding: 12px 7px; border: 1px solid var(--line); background: var(--tint); border-radius: 11px; font-size: 11px; font-weight: 600; }
.tool-symbol { flex: none; display: grid; place-items: center; width: 25px; height: 29px; border: 1px solid var(--line); background: var(--panel); border-radius: 7px; color: var(--brand); font-size: 20px; line-height: 1; }
.code-symbol { font-size: 10px; font-weight: 700; letter-spacing: -1px; }
.map-tool small { display: block; font-size: 8px; font-weight: 400; color: var(--soft); margin-top: 3px; white-space: nowrap; }
.map-connections { position: relative; height: 42px; }
.map-connections span { position: absolute; top: 0; height: 21px; border-left: 1px solid #a4cfc7; }
.map-connections span:nth-child(1) { left: 16.66%; }
.map-connections span:nth-child(2) { left: 50%; }
.map-connections span:nth-child(3) { left: 83.33%; }
.map-connections::before { content: ''; position: absolute; left: 16.66%; right: 16.66%; top: 20px; border-bottom: 1px solid #a4cfc7; }
.map-connections i { position: absolute; left: 50%; top: 20px; bottom: 0; border-left: 1px solid #a4cfc7; }
.map-hub { padding: 20px; background: #0d1b35; border: 1px solid #203a4c; border-radius: 16px; color: #f8fafc; box-shadow: 0 8px 18px rgba(8,35,47,.12); }
.hub-brand { display: flex; align-items: center; gap: 13px; }
.hub-brand img { border: 1px solid rgba(255,255,255,.07); border-radius: 13px; }
.hub-brand strong { display: block; font-size: 24px; letter-spacing: -.7px; font-weight: 700; line-height: 1.3; }
.hub-brand span { display: block; color: #acbdcc; font-size: 11px; margin-top: 4px; }
.hub-functions { display: grid; grid-template-columns: repeat(3,1fr); margin-top: 19px; padding-top: 14px; border-top: 1px solid #2c3b51; color: #b5dfd5; font-size: 11px; text-align: center; }
.hub-functions span+span { border-left: 1px solid #2c3b51; }
.map-down { display: flex; align-items: center; flex-direction: column; height: 38px; color: #7daea5; }
.map-down span { height: 24px; border-left: 1px solid #a4cfc7; }
.map-down svg { width: 16px; height: 16px; margin-top: -4px; }
.map-models { display: grid; grid-template-columns: 1.2fr 1.1fr 1fr; gap: 7px; font-size: 10px; }
.map-models span { display: flex; justify-content: center; align-items: center; padding: 8px 3px; border: 1px solid var(--line); border-radius: 8px; color: var(--muted); }
.map-footnote { color: var(--soft); font-size: 10px; text-align: center; margin-top: 14px; }
.workflow-strip { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 66px; padding: 26px 0; border-top: 1px solid var(--line); }
.workflow-label { color: var(--muted); font-size: 12px; }
.workflow-strip>div { display: flex; gap: 15px; align-items: center; }
.workflow-strip b { color: var(--brand); font-size: 11px; font-family: "SFMono-Regular",Consolas,monospace; font-weight: 500; }
.workflow-strip>div span { font-size: 14px; font-weight: 550; }
.strip-arrow { color: #a3b9b7; font-size: 17px; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; margin-bottom: 37px; }
h2 { font-size: clamp(27px,2.65vw,35px); line-height: 1.45; font-weight: 680; letter-spacing: -.8px; }
.section-heading .eyebrow,.management-intro .eyebrow,.faq-layout .eyebrow { margin-bottom: 11px; }
.section-heading>p { max-width: 370px; font-size: 14px; color: var(--muted); line-height: 1.9; }
.scenario-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 21px; }
.scenario-card { border: 1px solid var(--line); border-radius: 19px; padding: 26px; background: var(--panel); transition: border-color .2s,box-shadow .2s; }
.scenario-card:hover { border-color: #95ccc0; box-shadow: 0 13px 32px rgba(14,84,75,.06); }
.scenario-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 25px; }
.number-label { color: var(--soft); font-size: 11px; letter-spacing: .4px; }
.scenario-top svg { width: 27px; height: 27px; color: var(--brand); }
.scenario-card h3 { font-size: 18px; line-height: 1.6; font-weight: 650; letter-spacing: -.3px; }
.scenario-card>p { margin-top: 12px; font-size: 13px; color: var(--muted); line-height: 1.95; min-height: 77px; }
.tool-tags { display: flex; flex-wrap: wrap; gap: 6px; min-height: 59px; align-content: start; margin-top: 19px; }
.tool-tags span { font-size: 10px; color: var(--muted); padding: 3px 8px; border-radius: 5px; background: var(--tint); border: 1px solid var(--line); }
.text-link { display: inline-flex; align-items: center; gap: 21px; color: var(--brand); font-size: 13px; font-weight: 600; }
.text-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.scenario-card .text-link { margin-top: 17px; }
.section-note { color: var(--soft); font-size: 11px; margin-top: 20px; line-height: 1.8; }
.connect-section { background: var(--tint); border-block: 1px solid var(--line); }
.connect-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 72px; align-items: start; }
.setup-steps { padding: 7px 0 0; margin: 0; list-style: none; }
.setup-steps li { position: relative; display: flex; gap: 20px; padding-bottom: 33px; }
.setup-steps li:last-child { padding-bottom: 0; }
.setup-steps li:not(:last-child)::before { content: ''; position: absolute; left: 15px; top: 35px; bottom: 2px; border-left: 1px solid var(--line); }
.setup-steps li>span { display: grid; place-items: center; flex: none; width: 32px; height: 32px; color: var(--brand); border: 1px solid #b5d8cf; border-radius: 50%; font-size: 12px; background: var(--panel); }
.setup-steps h3 { font-size: 16px; line-height: 1.6; font-weight: 650; }
.setup-steps p { color: var(--muted); font-size: 13px; line-height: 1.9; margin-top: 8px; max-width: 340px; }
.setup-panel { overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: var(--panel); box-shadow: 0 14px 36px rgba(20,53,67,.035); }
.panel-tabs { display: flex; border-bottom: 1px solid var(--line); padding: 0 17px; }
.panel-tabs button { position: relative; flex: 1; padding: 18px 5px; color: var(--muted); border: 0; background: none; font: inherit; font-size: 13px; cursor: pointer; white-space: nowrap; }
.panel-tabs button[aria-selected="true"] { color: var(--brand); font-weight: 650; }
.panel-tabs button[aria-selected="true"]::after { content: ''; position: absolute; height: 2px; background: var(--brand); bottom: -1px; left: 16px; right: 16px; border-radius: 2px; }
.tab-panel { padding: 27px; min-height: 355px; }
.panel-label { color: var(--soft); font-size: 11px; margin-bottom: 8px; }
.tab-panel h3 { font-size: 18px; font-weight: 650; }
.checklist { padding: 0; margin: 17px 0 22px; list-style: none; }
.checklist li { position: relative; color: var(--muted); font-size: 13px; margin-top: 9px; padding-left: 20px; }
.checklist li::before { content: '✓'; position: absolute; left: 0; color: var(--brand); }
.endpoint-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; background: var(--tint); border: 1px solid var(--line); border-radius: 10px; padding: 13px 14px; }
.endpoint-row>div { min-width: 0; }
.endpoint-row span { display: block; color: var(--soft); font-size: 10px; margin-bottom: 3px; }
.endpoint-row code { font-size: 13px; overflow-wrap: anywhere; color: var(--ink); }
.copy-button { flex: none; background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 5px 9px; font: inherit; font-size: 11px; color: var(--muted); cursor: pointer; }
.copy-button:hover { color: var(--brand); border-color: var(--brand); }
.panel-note { color: var(--soft); font-size: 11px; line-height: 1.85; margin-top: 14px; }
.panel-note code,.faq-list code { font-size: .92em; color: var(--brand); }
.code-heading { display: flex; align-items: center; justify-content: space-between; gap: 10px; color: var(--soft); font-size: 11px; margin-bottom: 13px; }
.api-example { overflow-x: auto; padding: 17px; margin: 0; max-width: 100%; background: #0d1b35; color: #d3e8e3; font-size: 10.5px; line-height: 1.9; border-radius: 9px; scrollbar-width: thin; }
.copy-status { min-height: 31px; padding: 0 27px 14px; font-size: 11px; color: var(--brand); }
.management-layout { display: grid; grid-template-columns: .9fr 1.45fr; gap: 80px; align-items: start; }
.management-intro { position: sticky; top: 120px; }
.management-intro>p { color: var(--muted); max-width: 325px; font-size: 14px; line-height: 1.9; margin-top: 21px; }
.management-intro .text-link { margin-top: 24px; }
.management-list article { display: grid; grid-template-columns: 30px 1fr auto; gap: 20px; align-items: start; padding: 25px 0; border-bottom: 1px solid var(--line); }
.management-list article:first-child { padding-top: 0; }
.management-index { color: var(--soft); font: 12px "SFMono-Regular",Consolas,monospace; padding-top: 7px; }
.management-list h3 { font-size: 17px; font-weight: 650; }
.management-list p { color: var(--muted); margin-top: 10px; font-size: 13px; line-height: 1.9; }
.feature-tag { color: var(--brand); background: var(--brand-soft); padding: 4px 9px; border-radius: 5px; font-size: 10px; margin-top: 2px; white-space: nowrap; }
.ecosystem-section { padding-block: 52px; border-block: 1px solid var(--line); }
.ecosystem-layout { display: grid; grid-template-columns: .9fr 1.45fr; gap: 80px; align-items: center; }
.ecosystem-layout h2 { font-size: 27px; }
.ecosystem-layout .eyebrow { font-size: 11px; margin-bottom: 11px; }
.ecosystem-row { display: flex; align-items: center; gap: 28px; margin-bottom: 12px; }
.ecosystem-label { flex: none; font-size: 11px; color: var(--soft); }
.ecosystem-row>div { display: flex; flex-wrap: wrap; gap: 8px; }
.ecosystem-row>div>span { padding: 6px 12px; font-size: 12px; border: 1px solid var(--line); background: var(--panel); border-radius: 7px; }
.ecosystem-content>p { font-size: 11px; color: var(--soft); max-width: 570px; margin-top: 18px; }
.faq-layout { display: grid; grid-template-columns: .85fr 1.45fr; gap: 90px; align-items: start; }
.faq-intro { max-width: 270px; color: var(--muted); font-size: 13px; line-height: 1.9; margin-top: 19px; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list details:first-child { border-top: 1px solid var(--line); }
.faq-list summary { list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 20px; cursor: pointer; padding: 20px 0; font-size: 15px; font-weight: 550; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary>span { font-size: 22px; line-height: 1; font-weight: 300; color: var(--soft); transition: transform .18s; }
.faq-list details[open] summary>span { transform: rotate(45deg); }
.faq-list details[open] summary { color: var(--brand); }
.faq-list p { padding: 0 29px 22px 0; font-size: 13px; color: var(--muted); line-height: 1.95; }
.closing-section { position: relative; display: flex; align-items: center; gap: 26px; padding: 41px 42px; border: 1px solid #c5e2d9; border-radius: 23px; background: var(--brand-soft); margin-bottom: 83px; }
.closing-mark { display: grid; place-items: center; flex: none; width: 64px; height: 64px; border: 1px solid #b0d7cc; background: var(--panel); border-radius: 18px; color: var(--brand); font-size: 34px; font-weight: 350; }
.closing-section .eyebrow { margin-bottom: 7px; font-size: 11px; }
.closing-section h2 { font-size: 26px; }
.closing-section p { color: var(--muted); font-size: 12px; margin-top: 9px; }
.closing-actions { display: flex; align-items: center; flex-direction: column; gap: 11px; margin-left: auto; flex: none; }
.closing-register { font-size: 11px; }
.site-footer { border-top: 1px solid var(--line); background: var(--tint); }
.footer-main { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.15fr; gap: 45px; padding-block: 44px 35px; }
.footer-main .brand { font-size: 20px; }
.footer-brand>p { color: var(--soft); font-size: 11px; line-height: 1.9; margin-top: 16px; }
.footer-main h3 { font-size: 12px; font-weight: 600; margin-bottom: 14px; }
.footer-main>div>a:not(.brand) { display: block; color: var(--muted); font-size: 11px; margin-top: 8px; }
.footer-main .uoogpt-register-placeholder { display: block; padding: 0; margin-top: 9px; font-size: 11px; font-weight: 400; }
.footer-domain>span { display: block; font-size: 10px; color: var(--soft); }
.footer-domain strong { display: block; font-size: 20px; margin-top: 6px; letter-spacing: -.3px; font-weight: 600; }
.footer-domain p { color: var(--soft); font-size: 10px; line-height: 1.9; margin-top: 10px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-block: 18px 22px; border-top: 1px solid var(--line); font-size: 10px; color: var(--soft); }
.home-page .uoogpt-registration-notice button { background: #087f75; }
.dark .closing-section { border-color: #255347; }
.dark .closing-mark { border-color: #27594f; }

@media (max-width: 1120px) {
  .main-nav { gap: 20px; margin-right: 8px; }
  .header-inner { gap: 24px; }
  .hero-layout { gap: 36px; }
  .hero { padding-top: 66px; }
  .connection-map { padding: 22px 17px 18px; }
  .map-tool { flex-direction: column; text-align: center; }
  .scenario-card { padding: 23px; }
  .scenario-card h3 { font-size: 17px; }
  .connect-layout { gap: 45px; }
  .management-layout,.ecosystem-layout { gap: 50px; }
  .faq-layout { gap: 60px; }
  .closing-section { padding: 32px; }
  .closing-section h2 { font-size: 23px; }
}
@media (max-width: 880px) {
  .wrap { width: calc(100% - 44px); }
  .header-inner { height: 70px; }
  .brand { font-size: 21px; }
  .brand img { width: 35px; height: 35px; }
  .header-actions { gap: 12px; }
  .nav-toggle { display: grid; }
  .main-nav { display: none; position: absolute; top: 70px; left: 0; right: 0; margin: 0; padding: 18px 22px; border-bottom: 1px solid var(--line); background: var(--panel); box-shadow: 0 12px 20px rgba(20,53,67,.04); }
  .main-nav[data-open="true"] { display: grid; grid-template-columns: repeat(2,1fr); gap: 0; }
  .main-nav a { display: block; padding: 12px; border-radius: 6px; }
  .main-nav a:hover { background: var(--brand-soft); }
  .hero { padding-top: 52px; }
  .hero-layout { grid-template-columns: 1fr 1fr; gap: 27px; }
  h1 { font-size: 35px; letter-spacing: -1px; }
  .hero-description { font-size: 14px; margin-top: 19px; }
  .hero-actions { gap: 10px; margin-top: 23px; }
  .hero-actions .button { padding: 10px 14px; gap: 13px; min-height: 43px; font-size: 12px; }
  .hero-points { gap: 8px; flex-direction: column; margin-top: 21px; font-size: 11px; }
  .map-tools { gap: 5px; }
  .map-tool { padding: 10px 4px; font-size: 10px; }
  .map-tool small { display: none; }
  .map-hub { padding: 16px; }
  .hub-brand strong { font-size: 22px; }
  .hub-brand span { font-size: 9px; }
  .hub-brand img { width: 37px; height: 37px; }
  .map-models { grid-template-columns: 1fr; gap: 5px; }
  .map-models span { padding: 5px; font-size: 9px; }
  .map-topline { font-size: 12px; }
  .map-caption { font-size: 9px; }
  .map-footnote { font-size: 9px; }
  .workflow-strip { margin-top: 45px; gap: 15px; }
  .workflow-label { max-width: 76px; font-size: 10px; }
  .workflow-strip>div { gap: 10px; }
  .workflow-strip>div span { font-size: 12px; }
  .section { padding-block: 67px; }
  .section-heading { align-items: start; gap: 30px; margin-bottom: 28px; }
  .section-heading>p { max-width: 310px; font-size: 12px; }
  h2 { font-size: 28px; }
  .scenario-grid { gap: 14px; }
  .scenario-card { padding: 20px 17px; }
  .scenario-card h3 { font-size: 16px; }
  .scenario-card>p { font-size: 12px; min-height: 92px; }
  .tool-tags { min-height: 88px; }
  .scenario-top { margin-bottom: 19px; }
  .scenario-top svg { width: 24px; height: 24px; }
  .number-label { font-size: 9px; }
  .connect-layout { grid-template-columns: .85fr 1.15fr; gap: 32px; }
  .setup-steps li { gap: 13px; }
  .setup-steps h3 { font-size: 14px; }
  .setup-steps p { font-size: 12px; }
  .tab-panel { padding: 22px; }
  .tab-panel h3 { font-size: 16px; }
  .checklist li { font-size: 12px; }
  .endpoint-row { padding: 10px; }
  .endpoint-row code { font-size: 11px; }
  .management-layout { gap: 35px; }
  .management-list article { grid-template-columns: 23px 1fr; gap: 14px; }
  .feature-tag { display: none; }
  .ecosystem-layout { gap: 35px; }
  .ecosystem-row { gap: 18px; }
  .ecosystem-row>div>span { padding: 5px 9px; font-size: 10px; }
  .faq-layout { gap: 39px; }
  .faq-list summary { font-size: 14px; }
  .closing-section { gap: 20px; padding: 28px; }
  .closing-mark { display: none; }
  .closing-section h2 { font-size: 22px; }
  .footer-main { gap: 25px; grid-template-columns: 1.2fr .8fr .8fr 1fr; }
}
@media (max-width: 650px) {
  html { scroll-padding-top: 83px; }
  .wrap { width: calc(100% - 36px); }
  .header-inner { height: 66px; gap: 12px; }
  .brand { gap: 8px; font-size: 20px; }
  .brand img { width: 33px; height: 33px; border-radius: 9px; }
  .header-actions { gap: 9px; }
  .header-login { font-size: 12px; }
  .header-actions .uoogpt-register-nav { font-size: 12px; padding: 4px 10px; }
  .header-actions .icon-button { width: 25px; height: 31px; padding: 3px; }
  .header-actions .icon-button svg { width: 18px; height: 18px; }
  .main-nav { top: 66px; }
  .hero { padding-top: 43px; }
  .hero-layout { grid-template-columns: 1fr; gap: 36px; }
  .eyebrow { font-size: 11px; letter-spacing: .5px; margin-bottom: 15px; }
  h1 { font-size: clamp(33px,8.7vw,45px); line-height: 1.38; letter-spacing: -1px; }
  .hero-description { max-width: 480px; font-size: 14px; line-height: 1.95; margin-top: 19px; }
  .hero-actions { margin-top: 24px; gap: 11px; }
  .hero-actions .button { font-size: 13px; gap: 19px; padding: 11px 18px; }
  .access-note { font-size: 11px; }
  .hero-points { flex-direction: row; gap: 14px; margin-top: 21px; font-size: 10px; }
  .connection-map { padding: 21px 18px 18px; border-radius: 20px; }
  .map-topline { font-size: 13px; margin-bottom: 19px; }
  .map-tools { gap: 8px; }
  .map-tool { padding: 12px 5px; font-size: 11px; }
  .map-tool small { display: block; font-size: 8px; white-space: normal; }
  .map-caption { font-size: 9px; }
  .map-connections { height: 34px; }
  .map-hub { padding: 19px; }
  .hub-brand strong { font-size: 25px; }
  .hub-brand span { font-size: 10px; }
  .hub-brand img { width: 43px; height: 43px; }
  .hub-functions { font-size: 10px; }
  .map-models { grid-template-columns: 1.2fr 1.1fr 1fr; gap: 6px; }
  .map-models span { padding: 7px 3px; font-size: 9px; }
  .map-footnote { font-size: 9px; }
  .workflow-strip { margin-top: 35px; gap: 10px; padding-block: 21px; }
  .workflow-label { display: none; }
  .workflow-strip>div { gap: 9px; }
  .workflow-strip>div span { font-size: 11px; }
  .workflow-strip b { font-size: 10px; }
  .strip-arrow { font-size: 13px; }
  .section { padding-block: 55px; }
  h2 { font-size: 27px; letter-spacing: -.6px; }
  .section-heading { display: block; margin-bottom: 27px; }
  .section-heading>p { max-width: none; margin-top: 14px; font-size: 13px; }
  .scenario-grid { grid-template-columns: 1fr; gap: 15px; }
  .scenario-card { padding: 24px; }
  .scenario-top { margin-bottom: 15px; }
  .number-label { font-size: 10px; }
  .scenario-card h3 { font-size: 18px; }
  .scenario-card>p { min-height: 0; font-size: 13px; margin-top: 10px; }
  .tool-tags { min-height: 0; margin-top: 16px; }
  .scenario-card .text-link { margin-top: 22px; }
  .section-note { font-size: 10px; }
  .connect-layout { grid-template-columns: 1fr; gap: 31px; }
  .setup-steps { padding: 0; }
  .setup-steps li { gap: 17px; padding-bottom: 25px; }
  .setup-steps h3 { font-size: 15px; }
  .setup-steps p { font-size: 12px; max-width: none; margin-top: 6px; }
  .tab-panel { padding: 22px; min-height: 336px; }
  .panel-tabs { padding-inline: 8px; }
  .panel-tabs button { padding-block: 16px; font-size: 12px; }
  .tab-panel h3 { font-size: 17px; }
  .checklist li { font-size: 12px; margin-top: 10px; }
  .endpoint-row { gap: 10px; padding: 12px; }
  .endpoint-row code { font-size: 11px; }
  .api-example { font-size: 9px; padding: 13px; }
  .panel-note { font-size: 10px; }
  .copy-status { padding-inline: 22px; font-size: 10px; }
  .management-layout { grid-template-columns: 1fr; gap: 27px; }
  .management-intro { position: static; }
  .management-intro h2 br { display: none; }
  .management-intro>p { max-width: none; margin-top: 15px; font-size: 13px; }
  .management-intro .text-link { margin-top: 17px; }
  .management-list article { gap: 16px; grid-template-columns: 24px 1fr; padding-block: 21px; }
  .management-list h3 { font-size: 16px; }
  .management-list p { margin-top: 7px; font-size: 12px; }
  .ecosystem-section { padding-block: 36px; }
  .ecosystem-layout { grid-template-columns: 1fr; gap: 24px; }
  .ecosystem-layout h2 { font-size: 24px; }
  .ecosystem-layout h2 br { display: none; }
  .ecosystem-row { gap: 13px; }
  .ecosystem-label { font-size: 10px; }
  .ecosystem-row>div { gap: 6px; }
  .ecosystem-row>div>span { padding: 5px 8px; font-size: 10px; }
  .ecosystem-content>p { font-size: 10px; margin-top: 15px; }
  .faq-layout { grid-template-columns: 1fr; gap: 24px; }
  .faq-layout h2 br { display: none; }
  .faq-intro { max-width: none; margin-top: 13px; }
  .faq-list summary { font-size: 14px; padding-block: 18px; }
  .faq-list p { font-size: 12px; padding-right: 9px; padding-bottom: 19px; }
  .closing-section { flex-direction: column; align-items: flex-start; padding: 28px 24px; gap: 23px; margin-bottom: 53px; border-radius: 18px; }
  .closing-section h2 { font-size: 24px; }
  .closing-section p { font-size: 12px; line-height: 1.9; }
  .closing-actions { margin: 0; align-items: flex-start; gap: 10px; }
  .closing-actions .button { font-size: 12px; min-height: 43px; padding: 10px 20px; }
  .footer-main { grid-template-columns: repeat(2,1fr); gap: 29px 24px; padding-block: 33px; }
  .footer-brand { grid-column: 1/-1; }
  .footer-main .brand { font-size: 20px; }
  .footer-brand>p { margin-top: 12px; }
  .footer-domain { grid-column: 1/-1; border-top: 1px solid var(--line); padding-top: 22px; }
  .footer-domain p br { display: none; }
  .footer-bottom { gap: 12px; font-size: 9px; }
}
@media (max-width: 365px) {
  .header-actions { gap: 7px; }
  .header-actions .theme-toggle { display: none; }
  .brand { font-size: 19px; gap: 6px; }
  .brand img { width: 30px; height: 30px; }
  .hero-points { flex-direction: column; gap: 7px; }
  .hero-actions .button { padding-inline: 14px; gap: 13px; }
  .map-models { grid-template-columns: 1fr; }
  .map-models span { padding-block: 4px; }
  .ecosystem-row { align-items: start; }
  .ecosystem-label { padding-top: 6px; }
}
/* Keep explanatory text readable while retaining compact secondary labels. */
.map-tool { font-size: 12px; }
.map-tool small { font-size: 10px; white-space: normal; }
.map-caption { font-size: 11px; }
.map-models,.map-footnote { font-size: 11px; }
.hub-brand span,.hub-functions { font-size: 12px; }
.scenario-card>p,.setup-steps p,.checklist li,.management-list p,.faq-list p { font-size: 14px; }
.section-note,.panel-note,.copy-status,.ecosystem-content>p { font-size: 12px; }
.tool-tags span,.feature-tag,.number-label { font-size: 11px; }
.footer-brand>p,.footer-main>div>a:not(.brand),.footer-main .uoogpt-register-placeholder,.footer-domain p,.footer-bottom { font-size: 12px; }
@media (max-width: 880px) and (min-width: 651px) {
  .map-tool { font-size: 11px; }
  .hub-brand span,.hub-functions,.map-models span,.map-footnote { font-size: 10px; }
}
@media (max-width: 650px) {
  .map-tool { font-size: 12px; }
  .map-tool small,.map-caption { font-size: 10px; }
  .map-models span,.map-footnote { font-size: 10px; }
  .hub-brand span,.hub-functions { font-size: 11px; }
  .scenario-card>p,.setup-steps p,.checklist li,.management-list p,.faq-list p { font-size: 13px; }
  .section-note,.panel-note,.copy-status,.ecosystem-content>p { font-size: 11px; }
  .footer-brand>p,.footer-main>div>a:not(.brand),.footer-main .uoogpt-register-placeholder,.footer-domain p { font-size: 12px; }
  .footer-bottom { font-size: 10px; }
}
@media (max-width: 365px) {
  .header-actions { gap: 6px; }
  .header-actions .theme-toggle { display: grid; }
  .brand { font-size: 18px; gap: 5px; }
  .brand img { width: 28px; height: 28px; }
  .header-actions .uoogpt-register-nav { padding-inline: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,*::before,*::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}