:root {
  --night: #071528;
  --night-soft: #0d2038;
  --sea: #0b3f49;
  --sea-light: #1b6670;
  --sand: #f2eee5;
  --paper: #faf8f2;
  --magenta: #f04b9c;
  --magenta-dark: #bb2f73;
  --titanium: #b9c1ca;
  --titanium-dark: #77838f;
  --ink: #132130;
  --muted: #64717d;
  --line: rgba(19, 33, 48, .18);
  --light-line: rgba(242, 238, 229, .2);
  --shell: min(1480px, calc(100vw - 64px));
  --header: 78px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--sand);
  font-family: Inter, "SF Pro Text", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.72;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
button, a { font: inherit; }
.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; }

.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 50;
  min-height: var(--header);
  color: var(--sand);
  background: rgba(7, 21, 40, .94);
  border-bottom: 1px solid rgba(240, 75, 156, .24);
  backdrop-filter: blur(18px);
}
.header-inner { width: var(--shell); min-height: var(--header); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand-lockup { display: flex; align-items: center; gap: 13px; flex: 0 0 auto; }
.brand-lockup img { width: 44px; height: 44px; object-fit: contain; border-radius: 50%; box-shadow: 0 0 0 1px rgba(255,255,255,.2); }
.brand-lockup strong, .brand-lockup span { display: block; }
.brand-lockup strong { color: #fff; font-size: 18px; line-height: 1; }
.brand-lockup span { margin-top: 7px; color: var(--titanium); font-size: 8px; font-weight: 750; letter-spacing: .22em; line-height: 1; }
.main-nav { display: flex; align-self: stretch; }
.main-nav a {
  position: relative;
  display: flex;
  align-items: center;
  padding: 0 14px;
  color: #b8c2cc;
  font-size: 13px;
  font-weight: 580;
  text-decoration: none;
  transition: color .2s ease, background .2s ease;
}
.main-nav a::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: 0; height: 3px; background: var(--magenta); transform: scaleX(0); transform-origin: left; transition: transform .2s ease; }
.main-nav a:hover, .main-nav a:focus-visible, .main-nav a.is-active { color: #fff; background: rgba(255,255,255,.045); }
.main-nav a:hover::after, .main-nav a:focus-visible::after, .main-nav a.is-active::after { transform: scaleX(1); }
.main-nav a:focus-visible, .nav-toggle:focus-visible { outline: 3px solid var(--magenta); outline-offset: -3px; }
.nav-toggle { display: none; width: 46px; height: 42px; padding: 10px; color: #fff; background: transparent; border: 1px solid rgba(255,255,255,.45); border-radius: 2px; }
.nav-toggle i { display: block; height: 1px; margin: 6px 0; background: currentColor; transition: transform .2s ease; }

.hero { position: relative; min-height: calc(100vh - var(--header)); color: var(--sand); background: var(--night); overflow: hidden; }
.hero-grid { position: absolute; inset: 0; opacity: .32; background-image: linear-gradient(rgba(185,193,202,.1) 1px, transparent 1px), linear-gradient(90deg, rgba(185,193,202,.1) 1px, transparent 1px); background-size: 56px 56px; mask-image: linear-gradient(to bottom, #000 0%, rgba(0,0,0,.85) 65%, transparent 100%); }
.hero::before { content: ""; position: absolute; width: 900px; height: 900px; right: -330px; top: -360px; border-radius: 50%; background: radial-gradient(circle, rgba(240,75,156,.24) 0, rgba(11,63,73,.23) 35%, transparent 70%); }
.hero::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--magenta), transparent); }
.hero-inner { position: relative; z-index: 1; width: var(--shell); min-height: calc(100vh - var(--header)); margin: 0 auto; display: grid; grid-template-columns: minmax(0, .94fr) minmax(470px, .7fr); grid-template-rows: minmax(610px, 1fr) 126px; border-inline: 1px solid rgba(255,255,255,.12); }
.hero-copy { position: relative; padding: 82px 60px 64px; border-right: 1px solid rgba(255,255,255,.14); }
.eyebrow, .kicker { margin: 0; color: var(--magenta); font-size: 10px; font-weight: 800; letter-spacing: .2em; line-height: 1.5; }
.source-mark { display: flex; align-items: baseline; gap: 0; margin: 68px 0 34px; font-size: clamp(130px, 15vw, 230px); font-weight: 760; letter-spacing: -.15em; line-height: .62; }
.source-mark span:last-child { color: transparent; -webkit-text-stroke: 1px rgba(242,238,229,.72); }
.hero h1 { position: relative; z-index: 1; max-width: 860px; margin: 0; font-size: clamp(40px, 4.15vw, 68px); font-weight: 620; letter-spacing: -.048em; line-height: 1.12; }
.hero-tagline { max-width: 790px; margin: 30px 0 14px; color: #d7dce1; font-size: clamp(20px, 1.75vw, 27px); font-weight: 520; }
.hero-intro { max-width: 760px; margin: 0; color: #9ba8b5; font-size: 14px; }

.trust-map { position: relative; min-height: 610px; overflow: hidden; background: radial-gradient(circle at 51% 50%, rgba(19,100,112,.42), transparent 32%), linear-gradient(135deg, rgba(255,255,255,.02), transparent); }
.trust-map::before, .trust-map::after { content: ""; position: absolute; top: 50%; left: 50%; background: rgba(255,255,255,.18); transform: translate(-50%, -50%); }
.trust-map::before { width: 100%; height: 1px; }
.trust-map::after { width: 1px; height: 100%; }
.orbit { position: absolute; top: 50%; left: 50%; border: 1px solid rgba(185,193,202,.23); border-radius: 50%; transform: translate(-50%, -50%); }
.orbit-one { width: 210px; height: 210px; }
.orbit-two { width: 390px; height: 390px; border-style: dashed; }
.orbit-three { width: 590px; height: 590px; border-color: rgba(240,75,156,.22); }
.origin-node { position: absolute; top: 50%; left: 50%; z-index: 3; width: 150px; height: 150px; display: grid; place-content: center; text-align: center; color: var(--night); background: var(--sand); border-radius: 50%; transform: translate(-50%, -50%); box-shadow: 0 0 0 12px rgba(240,75,156,.12), 0 0 60px rgba(240,75,156,.18); }
.origin-node b { font-size: 48px; letter-spacing: -.08em; line-height: 1; }
.origin-node span { margin-top: 8px; color: var(--magenta-dark); font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.map-node { position: absolute; z-index: 4; min-width: 92px; padding: 12px 14px; background: rgba(7,21,40,.9); border: 1px solid rgba(242,238,229,.34); box-shadow: 0 10px 30px rgba(0,0,0,.25); }
.map-node::before { content: ""; position: absolute; width: 8px; height: 8px; top: -5px; left: -5px; background: var(--magenta); border-radius: 50%; box-shadow: 0 0 0 5px rgba(240,75,156,.14); }
.map-node i, .map-node strong { display: block; }
.map-node i { color: var(--magenta); font-size: 9px; font-style: normal; letter-spacing: .14em; }
.map-node strong { margin-top: 4px; font-size: 13px; }
.node-a { top: 12%; left: 20%; }
.node-b { top: 25%; right: 8%; }
.node-c { top: 64%; right: 11%; }
.node-d { bottom: 9%; left: 22%; }
.node-e { top: 43%; left: 7%; }
.hero-visual { position: relative; grid-column: 1; min-height: 126px; overflow: hidden; border-top: 1px solid rgba(255,255,255,.14); border-right: 1px solid rgba(255,255,255,.14); }
.hero-visual::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(7,21,40,.08), rgba(11,63,73,.52)), linear-gradient(180deg, transparent 30%, rgba(7,21,40,.42)); mix-blend-mode: multiply; }
.hero-visual img { width: 100%; height: 100%; object-fit: cover; object-position: 66% 44%; filter: grayscale(1) contrast(1.07); }
.hero-axis { display: grid; grid-template-columns: repeat(5, 1fr); align-items: center; min-height: 126px; border-top: 1px solid rgba(255,255,255,.14); }
.hero-axis > * { display: flex; align-items: center; min-height: 126px; padding: 16px; border-right: 1px solid rgba(255,255,255,.13); }
.hero-axis > *:last-child { border-right: 0; }
.hero-axis span { color: var(--magenta); font-size: 8px; font-weight: 800; letter-spacing: .15em; }
.hero-axis b { color: #bcc6ce; font-size: 12px; font-weight: 520; }

.breadcrumb { width: var(--shell); margin: 0 auto; padding: 20px 0; color: var(--muted); font-size: 12px; border-bottom: 1px solid var(--line); }
.breadcrumb i { margin: 0 12px; color: var(--magenta-dark); font-style: normal; }
.section { width: var(--shell); margin: 0 auto; padding: 112px 0; border-bottom: 1px solid var(--line); }
.section-head { display: grid; grid-template-columns: 190px 1fr; gap: 48px; align-items: start; margin-bottom: 62px; }
.section-code { margin: 8px 0 0; color: var(--magenta-dark); font-size: 10px; font-weight: 800; letter-spacing: .17em; }
.section-head > div { max-width: 980px; }
.section-head h2 { margin: 19px 0 0; font-size: clamp(36px, 4.3vw, 64px); font-weight: 620; letter-spacing: -.05em; line-height: 1.1; }
.section-head.inverse h2 { color: var(--sand); }
.section-head.inverse .section-code { color: #ff7cbc; }
.lead { font-size: clamp(20px, 2vw, 29px); line-height: 1.55; }

.identity-layout { display: grid; grid-template-columns: .78fr 1.22fr; gap: 70px; }
.identity-layout > .lead { margin: 0; color: var(--sea); }
.principle-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--ink); }
.principle-grid article { min-height: 330px; padding: 28px; border-right: 1px solid var(--line); }
.principle-grid article:last-child { border-right: 0; }
.principle-grid span { color: var(--magenta-dark); font-size: 11px; font-weight: 800; }
.principle-grid h3 { margin: 82px 0 15px; font-size: 21px; }
.principle-grid p { margin: 0; color: var(--muted); font-size: 14px; }

.capability, .operations, .updates, .credentials { position: relative; width: 100%; max-width: none; padding-inline: max(32px, calc((100vw - min(1480px, calc(100vw - 64px))) / 2)); color: var(--sand); background: var(--night); border-bottom: 0; overflow: hidden; }
.capability::before, .operations::before, .updates::before, .credentials::before { content: ""; position: absolute; inset: 0; opacity: .2; background-image: linear-gradient(rgba(185,193,202,.13) 1px, transparent 1px), linear-gradient(90deg, rgba(185,193,202,.13) 1px, transparent 1px); background-size: 52px 52px; pointer-events: none; }
.capability > *, .operations > *, .updates > *, .credentials > * { position: relative; z-index: 1; }
.capability-layout { display: grid; grid-template-columns: minmax(490px, .8fr) minmax(0, 1.2fr); gap: 92px; align-items: center; }
.capability-ring { position: relative; width: min(100%, 560px); aspect-ratio: 1; margin: 0 auto; border: 1px solid rgba(185,193,202,.24); border-radius: 50%; box-shadow: inset 0 0 0 78px rgba(11,63,73,.13), inset 0 0 0 79px rgba(185,193,202,.1); }
.capability-ring::before, .capability-ring::after { content: ""; position: absolute; top: 50%; left: 50%; background: rgba(185,193,202,.2); transform: translate(-50%, -50%); }
.capability-ring::before { width: 100%; height: 1px; }
.capability-ring::after { width: 1px; height: 100%; }
.ring-center { position: absolute; top: 50%; left: 50%; z-index: 2; width: 230px; height: 230px; display: grid; place-content: center; text-align: center; background: var(--sea); border: 1px solid rgba(255,255,255,.35); border-radius: 50%; transform: translate(-50%, -50%); }
.ring-center b, .ring-center span, .ring-center small { display: block; }
.ring-center b { font-size: 62px; letter-spacing: -.09em; line-height: 1; }
.ring-center span { margin-top: 14px; font-size: 13px; font-weight: 700; }
.ring-center small { margin-top: 5px; color: #a8b9bd; font-size: 9px; letter-spacing: .1em; }
.ring-item { position: absolute; z-index: 3; min-width: 100px; padding: 12px 14px; color: var(--night); background: var(--sand); border-left: 4px solid var(--magenta); }
.ring-item i { margin-right: 8px; color: var(--magenta-dark); font-size: 9px; font-style: normal; }
.ring-item strong { font-size: 13px; }
.r1 { top: 4%; left: 36%; }.r2 { top: 23%; right: -2%; }.r3 { bottom: 23%; right: -2%; }.r4 { bottom: 4%; left: 36%; }.r5 { bottom: 23%; left: -2%; }.r6 { top: 23%; left: -2%; }
.capability-copy > p { margin: 0 0 42px; color: #bdc6ce; font-size: 18px; }
.fact-list { border-top: 1px solid rgba(255,255,255,.3); }
.fact-list article { display: grid; grid-template-columns: 120px 1fr; gap: 25px; padding: 25px 0; border-bottom: 1px solid rgba(255,255,255,.18); }
.fact-list b { color: #ff7cbc; font-size: 11px; letter-spacing: .13em; }
.fact-list p { margin: 0; color: #aebac3; }

.network-panel { display: grid; grid-template-columns: .7fr 1.3fr; gap: 84px; align-items: center; }
.network-copy .lead { margin-top: 0; color: var(--sea); }
.network-copy > p:last-child { color: var(--muted); }
.network-board { position: relative; min-height: 560px; overflow: hidden; color: var(--sand); background: var(--sea); border-radius: 50% 2px 2px 2px; box-shadow: 0 30px 80px rgba(7,21,40,.19); }
.coordinate-lines { position: absolute; inset: 0; opacity: .25; background-image: linear-gradient(rgba(255,255,255,.2) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.2) 1px, transparent 1px); background-size: 44px 44px; }
.network-board::before, .network-board::after { content: ""; position: absolute; border: 1px solid rgba(255,255,255,.25); border-radius: 50%; }
.network-board::before { width: 430px; height: 430px; top: 62px; left: 50%; transform: translateX(-50%); }
.network-board::after { width: 250px; height: 250px; top: 152px; left: 50%; border-style: dashed; transform: translateX(-50%); }
.network-origin { position: absolute; top: 50%; left: 50%; z-index: 2; width: 130px; height: 130px; display: grid; place-content: center; text-align: center; background: var(--night); border-radius: 50%; transform: translate(-50%, -50%); }
.network-origin b { font-size: 38px; line-height: 1; }
.network-origin span { margin-top: 8px; color: #9db2b6; font-size: 7px; letter-spacing: .15em; }
.network-point { position: absolute; z-index: 3; width: 138px; padding: 14px; background: rgba(7,21,40,.92); border-top: 3px solid var(--magenta); }
.network-point i, .network-point strong, .network-point small { display: block; }
.network-point i { color: #ff7cbc; font-size: 8px; font-style: normal; letter-spacing: .15em; }
.network-point strong { margin-top: 7px; font-size: 13px; }
.network-point small { margin-top: 2px; color: #9db2b6; font-size: 10px; }
.p1 { top: 11%; left: 22%; }.p2 { top: 24%; right: 6%; }.p3 { bottom: 16%; right: 18%; }.p4 { bottom: 10%; left: 11%; }

.client-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.client-card { min-height: 410px; display: flex; flex-direction: column; padding: 30px; background: var(--paper); }
.client-card.featured { color: var(--sand); background: var(--sea); }
.client-icon { width: 58px; height: 58px; display: grid; place-content: center; color: var(--magenta-dark); border: 1px solid currentColor; border-radius: 50%; font-size: 22px; font-weight: 650; }
.client-card.featured .client-icon { color: #ff8cc4; }
.client-card > span { margin-top: 56px; color: var(--magenta-dark); font-size: 9px; font-weight: 800; letter-spacing: .17em; }
.client-card.featured > span { color: #ff8cc4; }
.client-card h3 { margin: 13px 0 14px; font-size: 23px; }
.client-card p { margin: 0; color: var(--muted); font-size: 14px; }
.client-card.featured p { color: #c1d1d3; }
.client-card em { margin-top: auto; padding-top: 25px; color: var(--magenta-dark); font-size: 11px; font-style: normal; border-top: 1px solid var(--line); }
.client-card.featured em { color: #ff9aca; border-top-color: rgba(255,255,255,.22); }
.verification-strip { display: grid; grid-template-columns: 190px 1fr; gap: 40px; align-items: center; margin-top: 22px; padding: 24px 30px; color: var(--sand); background: var(--night); }
.verification-strip b { color: #ff7cbc; font-size: 11px; letter-spacing: .14em; }
.verification-strip ol { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(6, 1fr); counter-reset: verify; }
.verification-strip li { position: relative; padding-left: 25px; color: #bac4cd; font-size: 12px; counter-increment: verify; }
.verification-strip li::before { content: counter(verify, decimal-leading-zero); position: absolute; left: 0; color: var(--magenta); font-size: 9px; }

.route-line { display: grid; grid-template-columns: repeat(5, 1fr); border-block: 1px solid rgba(255,255,255,.28); }
.route-line article { position: relative; min-height: 330px; padding: 30px 25px; border-right: 1px solid rgba(255,255,255,.18); }
.route-line article:last-child { border-right: 0; }
.route-line article::after { content: ""; position: absolute; top: 30px; right: -5px; z-index: 2; width: 9px; height: 9px; background: var(--magenta); border-radius: 50%; box-shadow: 0 0 0 6px rgba(240,75,156,.13); }
.route-line article:last-child::after { display: none; }
.route-line span { color: #ff7cbc; font-size: 10px; font-weight: 800; }
.route-line h3 { margin: 80px 0 15px; font-size: 20px; }
.route-line p { margin: 0; color: #aebac3; font-size: 14px; }
.operation-guides { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 52px; }
.operation-guides article { padding: 30px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.16); }
.operation-guides span { color: #ff7cbc; font-size: 9px; font-weight: 800; letter-spacing: .16em; }
.operation-guides h3 { margin: 18px 0 15px; font-size: 21px; }
.operation-guides p { margin: 0; color: #b5c0c8; font-size: 14px; }

.security-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 74px; }
.security-principle { min-height: 520px; display: flex; flex-direction: column; justify-content: flex-end; padding: 42px; color: var(--sand); background: var(--sea); clip-path: polygon(0 0, 100% 12%, 100% 100%, 0 100%); }
.security-principle .signal { margin: 0 0 auto; color: #ff91c7; font-size: 10px; font-weight: 800; letter-spacing: .22em; }
.security-principle h3 { max-width: 500px; margin: 0 0 18px; font-size: clamp(31px, 3vw, 48px); line-height: 1.15; }
.security-principle p:last-child { margin: 0; color: #bfd1d3; }
.risk-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--ink); border-left: 1px solid var(--line); }
.risk-grid article { min-height: 260px; padding: 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.risk-grid span { color: var(--magenta-dark); font-size: 9px; font-weight: 800; letter-spacing: .13em; }
.risk-grid h3 { margin: 50px 0 13px; font-size: 20px; }
.risk-grid p { margin: 0; color: var(--muted); font-size: 14px; }
.warning-band { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 28px; padding: 24px; border: 1px solid var(--magenta-dark); }
.warning-band b { margin-right: 20px; color: var(--magenta-dark); font-size: 11px; letter-spacing: .14em; }
.warning-band span { padding: 6px 12px; color: #753252; background: #f8e2ec; font-size: 11px; }

.timeline { border-top: 1px solid rgba(255,255,255,.3); }
.timeline article { display: grid; grid-template-columns: 180px 1fr 170px; gap: 35px; align-items: start; padding: 34px 0; border-bottom: 1px solid rgba(255,255,255,.18); }
.timeline time { color: #ff7cbc; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
.timeline span { color: #8ea1ae; font-size: 9px; font-weight: 800; letter-spacing: .15em; }
.timeline h3 { margin: 9px 0 8px; font-size: 23px; }
.timeline p { margin: 0; color: #acb8c1; }
.timeline em { color: #ff9dcb; font-size: 11px; font-style: normal; text-align: right; }

.faq-list { border-top: 1px solid var(--ink); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 25px; padding: 26px 0; cursor: pointer; font-size: 20px; font-weight: 620; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { color: var(--magenta-dark); font-size: 28px; font-weight: 350; transition: transform .2s ease; }
.faq-list details[open] summary span { transform: rotate(45deg); }
.faq-list summary:focus-visible { outline: 3px solid var(--magenta); outline-offset: 6px; }
.faq-list details p { max-width: 980px; margin: -4px 0 28px; color: var(--muted); }

.credentials-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; align-items: start; }
.credential-copy p { margin-top: 0; color: #bcc6ce; font-size: 17px; }
.credential-copy strong { color: #fff; }
.credential-list { margin: 0; border-top: 1px solid rgba(255,255,255,.3); }
.credential-list div { display: grid; grid-template-columns: 190px 1fr; gap: 30px; padding: 18px 0; border-bottom: 1px solid rgba(255,255,255,.18); }
.credential-list dt { color: #8599a7; font-size: 11px; letter-spacing: .1em; }
.credential-list dd { margin: 0; color: var(--sand); }

.site-footer { color: #aeb9c2; background: #040d19; }
.footer-inner { width: var(--shell); margin: 0 auto; display: grid; grid-template-columns: 230px 1fr; gap: 55px 80px; padding: 58px 0 38px; }
.footer-brand { display: flex; align-items: center; gap: 14px; }
.footer-brand img { width: 42px; height: 42px; object-fit: contain; border-radius: 50%; }
.footer-brand strong, .footer-brand span { display: block; }
.footer-brand strong { color: #fff; font-size: 16px; }
.footer-brand span { margin-top: 5px; color: #718393; font-size: 7px; font-weight: 800; letter-spacing: .17em; }
.footer-inner p { margin: 0; font-size: 13px; }
.footer-inner small { grid-column: 1 / -1; padding-top: 25px; color: #6d7d8a; border-top: 1px solid rgba(255,255,255,.12); }

@media (max-width: 1180px) {
  :root { --shell: min(100% - 44px, 1120px); }
  .main-nav a { padding-inline: 9px; font-size: 12px; }
  .main-nav a::after { left: 9px; right: 9px; }
  .hero-inner { grid-template-columns: minmax(0, 1fr) 440px; }
  .hero-copy { padding-inline: 44px; }
  .hero h1 { font-size: clamp(39px, 4.5vw, 58px); }
  .identity-layout, .network-panel, .security-layout, .credentials-layout { gap: 45px; }
  .capability-layout { grid-template-columns: 470px 1fr; gap: 55px; }
  .client-card { padding: 24px; }
}

@media (max-width: 980px) {
  :root { --shell: calc(100vw - 40px); }
  .nav-toggle { display: block; }
  .main-nav { position: absolute; top: 100%; left: 0; right: 0; display: none; padding: 12px 20px 22px; background: rgba(7,21,40,.98); border-bottom: 1px solid rgba(255,255,255,.2); box-shadow: 0 20px 40px rgba(0,0,0,.28); }
  .main-nav.is-open { display: grid; grid-template-columns: repeat(2, 1fr); }
  .main-nav a { min-height: 50px; padding: 10px 14px; border-bottom: 1px solid rgba(255,255,255,.1); }
  .main-nav a::after { left: 14px; right: auto; width: 34px; }
  .hero-inner { grid-template-columns: 1fr; grid-template-rows: auto 560px 150px 120px; }
  .hero-copy { min-height: 640px; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.14); }
  .trust-map { min-height: 560px; }
  .hero-visual { grid-column: 1; min-height: 150px; border-right: 0; }
  .hero-axis { grid-template-columns: repeat(5, 1fr); }
  .section { padding: 88px 0; }
  .capability, .operations, .updates, .credentials { padding-inline: 20px; }
  .section-head { grid-template-columns: 135px 1fr; gap: 30px; }
  .identity-layout, .network-panel, .security-layout, .credentials-layout, .capability-layout { grid-template-columns: 1fr; }
  .principle-grid { grid-template-columns: 1fr; }
  .principle-grid article { min-height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .principle-grid article:last-child { border-bottom: 0; }
  .principle-grid h3 { margin-top: 34px; }
  .capability-ring { width: min(580px, calc(100vw - 80px)); }
  .network-board { min-height: 520px; }
  .client-grid { grid-template-columns: repeat(2, 1fr); }
  .verification-strip { grid-template-columns: 1fr; }
  .verification-strip ol { grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .route-line { grid-template-columns: 1fr; }
  .route-line article { min-height: auto; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.18); }
  .route-line article::after { top: auto; bottom: -5px; right: auto; left: 30px; }
  .route-line h3 { margin-top: 30px; }
  .operation-guides { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  :root { --shell: calc(100vw - 28px); --header: 70px; }
  .brand-lockup img { width: 39px; height: 39px; }
  .brand-lockup strong { font-size: 16px; }
  .brand-lockup span { font-size: 7px; }
  .main-nav.is-open { grid-template-columns: 1fr; }
  .hero-inner { grid-template-rows: auto 420px 118px auto; }
  .hero-copy { min-height: 610px; padding: 56px 24px 45px; }
  .source-mark { margin: 52px 0 28px; font-size: clamp(104px, 36vw, 150px); }
  .hero h1 { font-size: clamp(35px, 10vw, 48px); }
  .hero-tagline { font-size: 19px; }
  .trust-map { min-height: 420px; }
  .orbit-one { width: 150px; height: 150px; }
  .orbit-two { width: 280px; height: 280px; }
  .orbit-three { width: 410px; height: 410px; }
  .origin-node { width: 110px; height: 110px; }
  .origin-node b { font-size: 38px; }
  .map-node { min-width: 72px; padding: 8px 10px; }
  .node-a { top: 10%; left: 13%; }.node-b { top: 21%; right: 3%; }.node-c { top: 67%; right: 4%; }.node-d { bottom: 7%; left: 18%; }.node-e { top: 45%; left: 1%; }
  .hero-axis { grid-template-columns: repeat(2, 1fr); }
  .hero-axis > * { min-height: 66px; }
  .hero-axis span { grid-column: 1 / -1; min-height: 54px; }
  .breadcrumb { padding: 16px 0; }
  .section { padding: 74px 0; }
  .capability, .operations, .updates, .credentials { padding-inline: 14px; }
  .section-head { grid-template-columns: 1fr; gap: 18px; margin-bottom: 42px; }
  .section-head h2 { font-size: clamp(33px, 10vw, 45px); }
  .identity-layout { gap: 35px; }
  .principle-grid article { padding: 24px 0; }
  .capability-ring { width: calc(100vw - 58px); }
  .ring-center { width: 150px; height: 150px; }
  .ring-center b { font-size: 45px; }
  .ring-item { min-width: 75px; padding: 8px 9px; }
  .ring-item i { margin-right: 3px; }
  .r1 { top: 1%; left: 34%; }.r2 { top: 23%; right: -3%; }.r3 { bottom: 23%; right: -3%; }.r4 { bottom: 1%; left: 34%; }.r5 { bottom: 23%; left: -3%; }.r6 { top: 23%; left: -3%; }
  .fact-list article { grid-template-columns: 1fr; gap: 8px; }
  .network-panel { gap: 40px; }
  .network-board { min-height: 440px; border-radius: 46% 2px 2px 2px; }
  .network-board::before { width: 330px; height: 330px; top: 55px; }
  .network-board::after { width: 190px; height: 190px; top: 125px; }
  .network-point { width: 112px; padding: 10px; }
  .p1 { top: 7%; left: 14%; }.p2 { top: 23%; right: 2%; }.p3 { bottom: 12%; right: 12%; }.p4 { bottom: 8%; left: 4%; }
  .client-grid { grid-template-columns: 1fr; }
  .client-card { min-height: 330px; }
  .client-card > span { margin-top: 38px; }
  .verification-strip { padding: 22px; }
  .verification-strip ol { grid-template-columns: repeat(2, 1fr); }
  .security-principle { min-height: 430px; padding: 30px 24px; }
  .risk-grid { grid-template-columns: 1fr; }
  .risk-grid article { min-height: auto; }
  .timeline article { grid-template-columns: 1fr; gap: 12px; }
  .timeline em { text-align: left; }
  .faq-list summary { font-size: 17px; }
  .credential-list div { grid-template-columns: 1fr; gap: 5px; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}