:root {
  --navy: #061a3a;
  --navy-2: #0b2b58;
  --blue: #0866e6;
  --blue-2: #1d7cff;
  --pale: #edf5ff;
  --ink: #0c1730;
  --muted: #66758f;
  --line: #dbe5f1;
  --paper: #ffffff;
  --bg: #f5f8fc;
  --shadow: 0 24px 60px rgba(16, 45, 85, .11);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--bg); font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; }
button, a { font: inherit; }
a { color: inherit; text-decoration: none; }

.site-header { position: sticky; top: 0; z-index: 20; height: 84px; background: rgba(255,255,255,.94); border-bottom: 1px solid var(--line); backdrop-filter: blur(18px); }
.header-inner { width: min(1440px, calc(100% - 64px)); height: 100%; margin: auto; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 40px; }
.brand { display: inline-flex; flex-direction: column; width: max-content; }
.brand strong { font-size: 20px; letter-spacing: .02em; }
.brand span { display: flex; align-items: center; gap: 10px; margin-top: 5px; color: #8391a7; font-size: 9px; letter-spacing: .13em; }
.brand i, footer i { width: 1px; height: 12px; background: #c5d0df; }
.main-nav { height: 100%; display: flex; align-items: center; gap: 54px; font-size: 20px; font-weight: 750; letter-spacing: .02em; }
.main-nav a, .main-nav span { position: relative; display: flex; height: 100%; align-items: center; }
.main-nav span { color: #59677e; }
.main-nav .active { color: var(--blue); }
.main-nav .active::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px; border-radius: 3px 3px 0 0; background: var(--blue); }
.login-preview { justify-self: end; width: 92px; height: 42px; border: 0; border-radius: 24px; background: #e5edf8; color: #7d8ba1; font-weight: 700; cursor: not-allowed; }

.shell { width: min(1440px, calc(100% - 64px)); margin-inline: auto; }
.hero { min-height: 640px; display: grid; grid-template-columns: .92fr 1.08fr; gap: 60px; align-items: center; padding-block: 64px; }
.eyebrow { display: flex; align-items: center; gap: 16px; color: #6c7c96; font-size: 11px; letter-spacing: .23em; }
.eyebrow span { width: 38px; height: 2px; background: var(--blue); }
.hero h1 { max-width: 680px; margin: 28px 0 24px; font-size: clamp(44px, 4.2vw, 72px); line-height: 1.08; letter-spacing: -.04em; white-space: pre-line; }
.hero-copy > p { max-width: 650px; margin: 0; color: #5d6d86; font-size: 18px; line-height: 1.9; }
.hero-actions { display: flex; align-items: center; gap: 22px; margin-top: 34px; }
.primary-action { position: relative; display: inline-flex; align-items: center; gap: 22px; min-height: 54px; padding: 6px 7px 6px 25px; overflow: hidden; border: 1px solid rgba(255,255,255,.34); border-radius: 29px; color: white; background: linear-gradient(105deg, #0968e7, #0a78f2 58%, #075dce); box-shadow: 0 14px 32px rgba(8,102,230,.26), inset 0 1px 0 rgba(255,255,255,.25); font-weight: 700; letter-spacing: .03em; transition: transform .25s ease, box-shadow .25s ease; }
.primary-action::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(110deg, transparent 20%, rgba(255,255,255,.18) 48%, transparent 72%); transform: translateX(-120%); transition: transform .65s ease; }
.primary-action:hover, .primary-action:focus-visible { transform: translateY(-2px); box-shadow: 0 18px 38px rgba(8,102,230,.32), inset 0 1px 0 rgba(255,255,255,.3); outline: none; }
.primary-action:hover::before, .primary-action:focus-visible::before { transform: translateX(120%); }
.primary-action span { position: relative; width: 40px; height: 40px; flex: 0 0 40px; border: 1px solid rgba(255,255,255,.3); border-radius: 50%; background: rgba(3,55,128,.22); }
.primary-action span::before { content: ""; position: absolute; left: 50%; top: 10px; width: 1px; height: 13px; background: rgba(255,255,255,.94); transform: translateX(-50%); }
.primary-action span::after { content: ""; position: absolute; left: 50%; top: 18px; width: 7px; height: 7px; border-right: 1px solid white; border-bottom: 1px solid white; transform: translateX(-50%) rotate(45deg); }
.hero-actions small { color: #8895aa; }

.capability-dynamic { position: relative; min-height: 548px; padding: 22px; border-radius: 36px; overflow: hidden; color: white; background: radial-gradient(circle at 25% 12%, rgba(25,117,235,.35), transparent 33%), radial-gradient(circle at 90% 85%, rgba(21,88,170,.28), transparent 35%), #051a39; box-shadow: var(--shadow); isolation: isolate; }
.capability-dynamic::before { content: ""; position: absolute; inset: 0; z-index: -1; opacity: .2; background-image: linear-gradient(rgba(122,181,244,.16) 1px, transparent 1px), linear-gradient(90deg, rgba(122,181,244,.16) 1px, transparent 1px); background-size: 34px 34px; mask-image: linear-gradient(to bottom, #000, transparent 90%); }
.dynamic-head, .dynamic-foot { display: flex; align-items: center; justify-content: space-between; gap: 20px; color: #83a7d2; font-size: 10px; letter-spacing: .14em; }
.dynamic-head span { display: flex; align-items: center; gap: 9px; }
.dynamic-head i { width: 7px; height: 7px; border-radius: 50%; background: #36a3ff; box-shadow: 0 0 12px #36a3ff; animation: softPulse 2s ease-in-out infinite; }
.dynamic-head small { color: #6888ad; font-size: 10px; }
.tech-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-block: 16px; }
.tech-cell { position: relative; min-width: 0; height: 218px; padding: 17px; overflow: hidden; border: 1px solid rgba(130,187,250,.18); border-radius: 18px; color: white; background: rgba(5,32,69,.74); text-align: left; cursor: pointer; transition: transform .25s ease, border-color .25s ease, background .25s ease; }
.tech-cell:hover, .tech-cell:focus-visible { transform: translateY(-3px); border-color: rgba(97,173,255,.65); background: rgba(8,47,97,.92); outline: none; }
.tech-cell::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(110deg, transparent 34%, rgba(101,177,255,.11) 49%, transparent 64%); transform: translateX(-120%); animation: scanCell 7s ease-in-out infinite; }
.cell-title { position: absolute; z-index: 3; left: 17px; top: 15px; display: flex; align-items: center; gap: 10px; }
.cell-title b { color: #68b4ff; font-size: 10px; letter-spacing: .12em; }
.cell-title strong { font-size: 16px; }
.cell-meta { position: absolute; z-index: 3; left: 17px; right: 17px; bottom: 14px; color: #86a4c8; font-size: 11px; line-height: 1.4; }

.llm-ecosystem, .data-ecosystem { position: absolute; left: 50%; top: 53%; width: 166px; height: 126px; transform: translate(-50%,-50%); }
.ecosystem-ring { position: absolute; left: 50%; top: 50%; width: 118px; height: 118px; border: 1px solid rgba(104,180,255,.28); border-radius: 50%; transform: translate(-50%,-50%); box-shadow: inset 0 0 22px rgba(31,133,244,.08), 0 0 22px rgba(31,133,244,.08); }
.ecosystem-ring::before { content: ""; position: absolute; inset: 14px; border: 1px dashed rgba(114,186,255,.19); border-radius: 50%; }
.model-core, .data-core { position: absolute; z-index: 4; left: 50%; top: 50%; width: 48px; height: 48px; transform: translate(-50%,-50%); display: grid; place-items: center; border: 1px solid rgba(132,196,255,.52); border-radius: 50%; background: radial-gradient(circle at 40% 30%, #13549b, #071e42 68%); color: #e8f5ff; font-style: normal; font-size: 12px; letter-spacing: .08em; box-shadow: 0 0 28px rgba(45,143,255,.45); }
.data-core { width: 54px; height: 38px; border-radius: 10px; font-size: 9px; }
.brand-rotor, .data-rotor { position: absolute; inset: 0; animation: ecosystemOrbit 32s linear infinite; }
.data-rotor { animation-duration: 28s; animation-direction: reverse; }
.brand-node, .data-node { --radius: 57px; position: absolute; z-index: 3; left: 50%; top: 50%; width: 27px; height: 27px; margin: -13.5px; transform: rotate(var(--angle)) translateY(calc(-1 * var(--radius))); font-style: normal; }
.brand-node > span, .data-node > span { width: 100%; height: 100%; display: grid; place-items: center; border: 1px solid rgba(127,192,255,.42); border-radius: 8px; background: rgba(242,248,255,.96); box-shadow: 0 0 15px rgba(64,157,255,.25); transform: rotate(var(--counter)); animation: ecosystemCounterOrbit 32s linear infinite; overflow: hidden; }
.data-node > span { color: #a9d7ff; background: #082a58; font-size: 7px; font-weight: 700; animation: dataCounterOrbit 28s linear infinite; }
.brand-node > span { font-size: 8px; font-weight: 700; color: #1a63c8; line-height: 1; letter-spacing: 0; }

.graph-net { position: absolute; left: 50%; top: 51%; width: 170px; height: 110px; transform: translate(-50%,-50%); }
.graph-line { position: absolute; left: 50%; top: 50%; width: 120px; height: 1px; background: linear-gradient(90deg, transparent, rgba(91,181,255,.75), transparent); transform-origin: center; }
.gl1 { transform: translate(-50%,-50%) rotate(18deg); }.gl2 { transform: translate(-50%,-50%) rotate(73deg); }.gl3 { transform: translate(-50%,-50%) rotate(132deg); }.gl4 { transform: translate(-50%,-50%) rotate(-38deg); }
.graph-node { position: absolute; width: 18px; height: 18px; border: 2px solid #3c9dff; border-radius: 50%; background: #082957; box-shadow: 0 0 16px rgba(62,165,255,.55); animation: graphPulse 2.8s ease-in-out infinite; }
.gn1 { left: 4px; top: 24px; }.gn2 { left: 62px; top: 0; animation-delay: -.55s; }.gn3 { right: 2px; top: 36px; animation-delay: -1.1s; }.gn4 { right: 42px; bottom: 0; animation-delay: -1.65s; }.gn5 { left: 43px; bottom: 8px; animation-delay: -2.2s; }

.asset-stack { position: absolute; left: 50%; top: 52%; width: 164px; height: 110px; transform: translate(-50%,-50%); }
.asset-layer { position: absolute; left: 18px; width: 112px; height: 30px; padding-left: 14px; border: 1px solid rgba(96,183,255,.42); border-radius: 7px; background: linear-gradient(90deg, rgba(14,69,135,.94), rgba(7,35,75,.88)); color: #b7ddff; font-size: 7px; font-style: normal; letter-spacing: .12em; line-height: 29px; box-shadow: 0 7px 18px rgba(0,0,0,.2); }
.layer-data { top: 9px; transform: translateX(10px); }
.layer-knowledge { top: 40px; transform: translateX(5px); }
.layer-rights { top: 71px; }
.asset-lock { position: absolute; z-index: 4; right: 4px; top: 31px; width: 45px; height: 53px; border: 1px solid #73c4ff; border-radius: 11px 11px 15px 15px; background: #0a3977; box-shadow: 0 0 24px rgba(61,161,255,.38); }
.asset-lock::before { content: ""; position: absolute; left: 11px; top: -16px; width: 21px; height: 25px; border: 2px solid #73c4ff; border-bottom: 0; border-radius: 14px 14px 0 0; }
.asset-lock span { position: absolute; left: 50%; top: 19px; width: 7px; height: 12px; border-radius: 5px; background: #bce4ff; transform: translateX(-50%); }
.asset-scan { position: absolute; z-index: 5; left: 13px; right: 36px; top: 9px; height: 2px; background: linear-gradient(90deg, transparent, #74c7ff, white, transparent); filter: drop-shadow(0 0 8px #5db8ff); animation: assetScan 3.8s ease-in-out infinite; }
.dynamic-foot { padding-top: 2px; letter-spacing: 0; }
.dynamic-foot b { color: #91b4d9; font-size: 10px; font-weight: 500; }

@keyframes softPulse { 50% { opacity: .45; transform: scale(.92); } }
@keyframes scanCell { 0%,20% { transform: translateX(-130%); } 55%,100% { transform: translateX(130%); } }
@keyframes ecosystemOrbit { to { transform: rotate(360deg); } }
@keyframes ecosystemCounterOrbit { to { transform: rotate(calc(var(--counter) - 360deg)); } }
@keyframes dataCounterOrbit { to { transform: rotate(calc(var(--counter) + 360deg)); } }
@keyframes orbitSpin { to { transform: translate(-50%,-50%) rotate(360deg); } }
@keyframes orbitSpinReverse { to { transform: translate(-50%,-50%) rotate(-360deg); } }
@keyframes nodeFloat { 50% { transform: translateY(-4px); box-shadow: 0 0 22px rgba(66,161,255,.35); } }
@keyframes dataSweep { 0%,100% { transform: translateX(-42%); opacity: .4; } 50% { transform: translateX(42%); opacity: 1; } }
@keyframes graphPulse { 50% { transform: scale(1.28); background: #1278df; } }
@keyframes vaultSpin { to { transform: translate(-50%,-50%) rotate(405deg); } }
@keyframes vaultSpinReverse { to { transform: translate(-50%,-50%) rotate(-315deg); } }
@keyframes assetScan { 0%,100% { transform: translateY(0); opacity: .35; } 50% { transform: translateY(91px); opacity: 1; } }

.capabilities { padding-block: 92px 70px; }
.section-heading { display: flex; justify-content: flex-start; align-items: end; gap: 40px; }
.section-heading h2, .stack-copy h2, .closing h2 { margin: 18px 0 0; font-size: clamp(32px, 3vw, 48px); line-height: 1.18; letter-spacing: -.03em; }
.section-heading > p { max-width: 440px; margin: 0 0 4px; color: var(--muted); line-height: 1.8; }
.capability-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; margin-top: 44px; }
.capability-card { position: relative; min-height: 264px; padding: 28px; overflow: hidden; border: 1px solid var(--line); border-radius: 22px; background: var(--paper); text-align: left; cursor: pointer; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.capability-card::after { content: ""; position: absolute; z-index: 0; right: -82px; bottom: -88px; width: 158px; height: 158px; pointer-events: none; border: 1px solid rgba(193,220,250,.72); border-radius: 50%; box-shadow: 0 0 0 22px rgba(222,238,255,.34), 0 0 0 44px rgba(237,246,255,.58); }
.capability-card > * { position: relative; z-index: 1; }
.capability-card:hover, .capability-card:focus-visible { transform: translateY(-6px); border-color: #9fc7fb; box-shadow: 0 20px 44px rgba(23,70,129,.12); outline: none; }
.capability-card b { color: var(--blue); font-size: 12px; letter-spacing: .15em; }
.capability-card h3 { margin: 28px 0 10px; font-size: 24px; }
.capability-card small { color: #8390a5; font-size: 9px; letter-spacing: .08em; }
.capability-card p { max-width: none; margin: 24px 0 0; padding-right: 42px; color: var(--muted); line-height: 1.7; }

.principles { display: grid; grid-template-columns: .72fr 1.28fr; gap: 64px; align-items: end; padding: 58px 64px; border: 1px solid #d7e5f4; border-radius: 30px; background: linear-gradient(135deg, #ffffff, #edf5ff); }
.principle-heading h2 { max-width: 520px; margin: 18px 0 18px; font-size: clamp(30px, 2.7vw, 44px); line-height: 1.2; letter-spacing: -.03em; }
.principle-heading p { max-width: 520px; margin: 0; color: var(--muted); line-height: 1.75; }
.principle-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.principle-card { min-height: 126px; padding: 22px; border: 1px solid #d9e7f4; border-radius: 18px; background: rgba(255,255,255,.8); display: grid; grid-template-columns: 34px 1fr; gap: 14px; }
.principle-card > b { color: var(--blue); font-size: 10px; letter-spacing: .14em; }
.principle-card h3 { margin: 0 0 9px; font-size: 18px; }
.principle-card p { margin: 0; color: #667891; font-size: 14px; line-height: 1.6; }

.details { display: grid; gap: 24px; padding-block: 72px 100px; }
.detail-panel { scroll-margin-top: 110px; display: grid; grid-template-columns: 180px 1fr; min-height: 360px; overflow: hidden; border: 1px solid var(--line); border-radius: 28px; background: white; box-shadow: 0 12px 34px rgba(34,66,107,.05); }
.detail-index { position: relative; padding: 34px; background: linear-gradient(155deg, #071e42, #0d3974); color: white; }
.detail-index strong { font-size: 66px; font-weight: 300; letter-spacing: -.05em; }
.detail-index span { position: absolute; left: 34px; bottom: 34px; color: #8dbaf0; font-size: 10px; letter-spacing: .16em; writing-mode: vertical-rl; transform: rotate(180deg); }
.detail-body { display: grid; grid-template-columns: 1.15fr .85fr; gap: 54px; padding: 46px 50px; }
.detail-body h3 { margin: 0; font-size: 34px; }
.detail-body .english { margin-top: 8px; color: #7d8ba1; font-size: 10px; letter-spacing: .16em; }
.detail-statement { margin: 30px 0 0; color: #44536b; font-size: 18px; line-height: 1.85; }
.boundary { margin-top: 28px; min-height: 86px; padding: 15px 16px; border-left: 3px solid var(--blue); background: #f4f8fd; color: #56667e; display: grid; grid-template-columns: 154px 1fr; align-items: center; gap: 16px; }
.boundary p { margin: 0; font-size: 14px; line-height: 1.7; }
.mini-visual { min-width: 0; height: 54px; border-right: 1px solid #d5e4f4; }
.mini-brands { display: grid; grid-template-columns: repeat(3,26px); grid-template-rows: repeat(2,26px); gap: 2px 4px; align-content: center; }
.mini-brands i { width: 26px; height: 26px; display: grid; place-items: center; overflow: hidden; border: 1px solid #d7e5f4; border-radius: 7px; background: white; }
.mini-brands span { font-size: 10px; font-weight: 700; color: #1a63c8; line-height: 1; white-space: nowrap; }
.mini-data { position: relative; display: grid; grid-template-columns: repeat(3,34px); gap: 4px; align-content: center; padding-left: 38px; }
.mini-data b { position: absolute; left: 0; top: 11px; width: 34px; height: 31px; display: grid; place-items: center; border-radius: 7px; background: #0b3e7d; color: white; font-size: 7px; }
.mini-data span { height: 22px; display: grid; place-items: center; border: 1px solid #cbdff4; border-radius: 6px; background: white; color: #1b5fa7; font-size: 7px; font-weight: 700; }
.mini-graph { position: relative; width: 138px; }
.mini-graph i { position: absolute; width: 13px; height: 13px; border: 2px solid #2d8df1; border-radius: 50%; background: #e8f3ff; box-shadow: 0 0 0 4px rgba(35,126,225,.08); }
.mini-graph i:nth-child(1) { left: 6px; top: 20px; }.mini-graph i:nth-child(2) { left: 42px; top: 3px; }.mini-graph i:nth-child(3) { left: 75px; top: 28px; }.mini-graph i:nth-child(4) { left: 105px; top: 5px; }.mini-graph i:nth-child(5) { left: 122px; top: 36px; }
.mini-graph b { position: absolute; left: 12px; top: 26px; width: 112px; height: 1px; background: #94bee8; transform-origin: left; }
.mini-graph b:nth-of-type(1) { transform: rotate(-25deg); }.mini-graph b:nth-of-type(2) { left: 46px; top: 10px; width: 45px; transform: rotate(34deg); }.mini-graph b:nth-of-type(3) { left: 80px; top: 34px; width: 39px; transform: rotate(-39deg); }.mini-graph b:nth-of-type(4) { left: 109px; top: 12px; width: 34px; transform: rotate(68deg); }
.mini-assets { position: relative; width: 138px; }
.mini-assets i { position: absolute; left: 4px; width: 94px; height: 19px; padding-left: 8px; border: 1px solid #bfd9f4; border-radius: 5px; background: white; color: #356da9; font-size: 6px; font-style: normal; letter-spacing: .06em; line-height: 18px; }
.mini-assets i:nth-child(1) { top: 0; transform: translateX(8px); }.mini-assets i:nth-child(2) { top: 18px; transform: translateX(4px); }.mini-assets i:nth-child(3) { top: 36px; }
.mini-assets b { position: absolute; right: 9px; top: 13px; width: 34px; height: 38px; border: 1px solid #2e8ce9; border-radius: 8px 8px 11px 11px; background: #e8f3ff; }
.mini-assets b::before { content: ""; position: absolute; left: 8px; top: -12px; width: 15px; height: 17px; border: 2px solid #2e8ce9; border-bottom: 0; border-radius: 10px 10px 0 0; }
.mini-assets b span { position: absolute; left: 50%; top: 14px; width: 5px; height: 10px; border-radius: 4px; background: #2e8ce9; transform: translateX(-50%); }
.function-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; align-content: center; }
.function-list span { min-height: 74px; padding: 18px; border: 1px solid #dce7f3; border-radius: 14px; background: #fbfdff; color: #2b3d58; display: flex; align-items: center; font-weight: 700; }
.function-list span::before { content: ""; width: 7px; height: 7px; margin-right: 11px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 5px #e3efff; }

.stack-section { display: grid; grid-template-columns: .68fr 1.32fr; gap: 60px; align-items: center; min-height: 470px; padding: 58px 64px; border-radius: 32px; color: white; background: radial-gradient(circle at 85% 10%, #1d5697, transparent 40%), linear-gradient(135deg, #061a3a, #0b2b58); box-shadow: var(--shadow); }
.eyebrow.light { color: #8bb8ec; }
.stack-copy p { max-width: 570px; margin: 26px 0 0; color: #b7c8dc; font-size: 17px; line-height: 1.85; }
.stack-visual { position: relative; padding-block: 34px 44px; }
.flow-track { position: absolute; left: 6%; right: 6%; top: 28px; height: 2px; overflow: hidden; background: rgba(111,177,246,.16); }
.flow-energy { position: absolute; top: 0; width: 130px; height: 2px; background: linear-gradient(90deg, transparent, #56b3ff, white, transparent); filter: drop-shadow(0 0 7px #4aa7ff); animation: flowAcross 5.2s linear infinite; }
.stack-flow { display: grid; grid-template-columns: repeat(5,1fr); gap: 10px; }
.stack-step { position: relative; min-width: 0; min-height: 178px; padding: 22px 16px; border: 1px solid rgba(141,190,243,.18); border-radius: 16px; background: rgba(255,255,255,.055); }
.stack-step b { width: 34px; height: 34px; border: 1px solid rgba(119,181,255,.5); border-radius: 50%; color: #78b7ff; display: grid; place-items: center; font-size: 11px; }
.stack-step strong { display: block; margin-top: 24px; font-size: 17px; }
.stack-step span { display: block; margin-top: 10px; color: #a9bdd5; font-size: 12px; line-height: 1.55; }
.stack-step i { position: absolute; right: -13px; top: 50%; z-index: 2; width: 26px; height: 12px; background: linear-gradient(90deg, rgba(84,164,239,.12), #71c4ff 48%, rgba(127,205,255,.24)) center / 18px 1px no-repeat; filter: drop-shadow(0 0 5px rgba(80,177,255,.55)); transform: translateY(-50%); }
.stack-step i::after { content: ""; position: absolute; right: 3px; top: 3px; width: 6px; height: 6px; border-top: 1px solid #9bd9ff; border-right: 1px solid #9bd9ff; transform: rotate(45deg); }
.stack-step:last-child i { display: none; }
.flow-return { position: absolute; left: 7%; right: 7%; bottom: 4px; height: 24px; border-bottom: 1px solid rgba(105,174,244,.34); border-left: 1px solid rgba(105,174,244,.24); border-right: 1px solid rgba(105,174,244,.34); border-radius: 0 0 28px 28px; color: #6faee8; text-align: center; box-shadow: inset 0 -7px 14px rgba(26,119,217,.03); }
.flow-return span { position: relative; top: 12px; padding: 0 13px; background: #092856; font-size: 10px; letter-spacing: .12em; }
.flow-return i { position: absolute; right: -15px; top: -15px; width: 30px; height: 30px; border: 1px solid rgba(112,195,255,.5); border-radius: 50%; background: radial-gradient(circle at 45% 42%, #155797, #092856 70%); box-shadow: 0 0 18px rgba(69,164,248,.25); animation: returnGlow 2.8s ease-in-out infinite; }
.flow-return i::before { content: ""; position: absolute; inset: 7px; border: 1px solid #8ed1ff; border-left-color: transparent; border-radius: 50%; transform: rotate(-28deg); }
.flow-return i::after { content: ""; position: absolute; right: 4px; top: 7px; width: 5px; height: 5px; border-top: 1px solid #b5e3ff; border-right: 1px solid #b5e3ff; transform: rotate(24deg); }
@keyframes flowAcross { from { left: -130px; } to { left: 100%; } }
@keyframes returnGlow { 50% { box-shadow: 0 0 25px rgba(83,180,255,.52); transform: scale(1.06); } }

.closing { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; padding-block: 110px; }
.closing p { margin: 0; padding-left: 38px; border-left: 1px solid #cbd8e8; color: var(--muted); font-size: 18px; line-height: 1.9; }
footer { height: 88px; border-top: 1px solid var(--line); background: white; color: #8190a6; display: flex; align-items: center; justify-content: center; gap: 14px; font-size: 11px; letter-spacing: .14em; }

@media (max-width: 1100px) {
  .header-inner, .shell { width: min(100% - 36px, 940px); }
  .brand span { display: none; }
  .main-nav { gap: 24px; font-size: 17px; }
  .hero { grid-template-columns: 1fr; }
  .capability-dynamic { min-height: 548px; }
  .capability-grid { grid-template-columns: 1fr 1fr; }
  .principles { grid-template-columns: 1fr; }
  .detail-body { grid-template-columns: 1fr; gap: 24px; }
  .stack-section { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .site-header { height: auto; }
  .header-inner { grid-template-columns: 1fr auto; padding-block: 14px; gap: 12px; }
  .main-nav { grid-column: 1 / -1; order: 3; height: 42px; justify-content: space-between; font-size: 13px; }
  .login-preview { grid-column: 2; grid-row: 1; width: 70px; }
  .hero { padding-block: 44px; }
  .hero h1 { font-size: 42px; }
  .hero-actions, .section-heading { align-items: flex-start; flex-direction: column; }
  .capability-dynamic { min-height: 960px; padding: 16px; border-radius: 24px; }
  .tech-grid { grid-template-columns: 1fr; }
  .dynamic-head small, .dynamic-foot span { display: none; }
  .capability-grid { grid-template-columns: 1fr; }
  .principles { padding: 34px 22px; }
  .principle-grid { grid-template-columns: 1fr; }
  .detail-panel { grid-template-columns: 1fr; }
  .detail-index { min-height: 106px; }
  .detail-index span { display: none; }
  .detail-body { padding: 28px 22px; }
  .boundary { grid-template-columns: 1fr; }
  .mini-visual { border-right: 0; border-bottom: 1px solid #d5e4f4; padding-bottom: 10px; }
  .function-list { grid-template-columns: 1fr; }
  .stack-section { padding: 38px 24px; }
  .stack-flow { grid-template-columns: 1fr; }
  .stack-step { min-height: 116px; }
  .stack-step i { right: 50%; top: auto; bottom: -18px; transform: rotate(90deg); }
  .flow-track, .flow-return { display: none; }
  .closing { grid-template-columns: 1fr; gap: 34px; padding-block: 72px; }
  .closing p { padding: 0; border: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .brand-rotor, .data-rotor, .brand-node > span, .data-node > span, .tech-cell::after, .graph-node, .asset-scan, .flow-energy, .flow-return i { animation: none !important; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}

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