:root {
  --ink: #07111f;
  --ink-soft: #526174;
  --paper: #f5f7f9;
  --white: #ffffff;
  --blue: #2f7df6;
  --blue-light: #62d5ff;
  --line: rgba(7, 17, 31, 0.12);
  --dark-line: rgba(255, 255, 255, 0.14);
  --max-width: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
.pointer-glow { position: fixed; z-index: 5; top: 0; left: 0; width: 260px; height: 260px; border-radius: 50%; background: radial-gradient(circle, rgba(89, 208, 255, .14), transparent 68%); opacity: 0; pointer-events: none; mix-blend-mode: screen; transform: translate3d(-50%, -50%, 0); transition: opacity .25s ease; }
.scroll-progress { position: fixed; z-index: 10; top: 0; left: 0; width: 100%; height: 2px; background: linear-gradient(90deg, #8ceaff, #447dff); transform: scaleX(0); transform-origin: left center; }
.container { width: min(calc(100% - 80px), var(--max-width)); margin: 0 auto; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 10; padding: 10px 14px; color: white; background: var(--blue); }
.skip-link:focus { top: 16px; }

.site-header { position: absolute; z-index: 2; width: 100%; color: var(--white); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 88px; }
.brand, .footer-brand { display: inline-flex; align-items: center; gap: 12px; font-size: 14px; font-weight: 700; letter-spacing: .04em; }
.brand-mark { display: grid; place-items: center; width: 30px; height: 30px; color: var(--ink); background: linear-gradient(135deg, var(--blue-light), #a7f0ff); font-size: 17px; font-weight: 900; font-style: italic; }
.site-nav { display: flex; gap: 34px; color: rgba(255,255,255,.72); font-size: 13px; }
.site-nav a { transition: color .2s ease; }
.site-nav a:hover, .site-nav a:focus-visible { color: var(--white); }

.hero { position: relative; min-height: 730px; overflow: hidden; color: var(--white); background: var(--ink); }
.hero::before { position: absolute; inset: 0; opacity: var(--hero-fade, 1); background: radial-gradient(circle at 80% 18%, rgba(44, 125, 246, .25), transparent 31%), radial-gradient(circle at 20% 85%, rgba(0, 199, 255, .1), transparent 28%); content: ""; transition: opacity .2s linear; }
.particle-canvas { position: absolute; z-index: 0; inset: 0; width: 100%; height: 100%; opacity: .9; pointer-events: none; }
.hero-scan-grid { position: absolute; z-index: 0; inset: 0; opacity: .18; background-image: linear-gradient(rgba(104, 215, 255, .18) 1px, transparent 1px), linear-gradient(90deg, rgba(104, 215, 255, .18) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(90deg, transparent 0%, #000 35%, #000 76%, transparent 100%); perspective: 500px; transform: perspective(500px) rotateX(62deg) translateY(180px) scale(1.35); transform-origin: center bottom; animation: grid-scan 12s linear infinite; }
@keyframes grid-scan { from { background-position: 0 0; } to { background-position: 0 144px; } }
.hero-content { position: relative; z-index: 1; padding-top: 220px; }
.eyebrow, .section-kicker { margin: 0 0 24px; color: var(--blue-light); font-size: 11px; font-weight: 700; letter-spacing: .16em; }
.eyebrow { display: flex; align-items: center; gap: 9px; color: #92dfff; }
.eyebrow-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--blue-light); box-shadow: 0 0 16px var(--blue-light); }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 800px; margin-bottom: 28px; font-size: clamp(54px, 8vw, 104px); font-weight: 500; letter-spacing: -.075em; line-height: .98; }
h1 em, .contact h2 em { color: #93e7ff; font-style: normal; }
.hero-copy { max-width: 510px; color: rgba(255,255,255,.66); font-size: 16px; line-height: 1.9; }
.hero-actions { display: flex; gap: 12px; margin-top: 36px; }
.button { display: inline-flex; align-items: center; gap: 22px; min-height: 48px; padding: 0 19px; border: 1px solid transparent; font-size: 13px; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.button:hover, .button:focus-visible { transform: translateY(-2px); }
.button-primary { color: var(--ink); background: #a7efff; }
.button-primary:hover, .button-primary:focus-visible { background: var(--white); }
.button-quiet { color: rgba(255,255,255,.8); border-color: rgba(255,255,255,.28); }
.button-quiet:hover, .button-quiet:focus-visible { color: var(--white); border-color: rgba(255,255,255,.7); }
.hero-footnote { position: absolute; z-index: 1; right: 0; bottom: 38px; left: 50%; display: flex; align-items: center; gap: 14px; transform: translateX(-50%); color: rgba(255,255,255,.45); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; }
.hero-footnote-line { display: block; width: 100px; height: 1px; background: rgba(255,255,255,.32); }
.hero-grid { position: absolute; inset: 0; opacity: .8; }
.hero-orb { position: absolute; border: 1px solid rgba(110, 221, 255, .35); border-radius: 50%; }
.hero-orb::after { position: absolute; inset: 18%; border: 1px solid rgba(110, 221, 255, .22); border-radius: 50%; content: ""; }
.hero-orb-one { top: 115px; right: 11%; width: 360px; height: 360px; box-shadow: 0 0 80px rgba(55, 167, 255, .12); }
.hero-orb-two { top: 204px; right: 19%; width: 180px; height: 180px; border-style: dashed; }
.hero-line { position: absolute; width: 500px; height: 1px; background: linear-gradient(90deg, transparent, rgba(120, 225, 255, .35), transparent); transform: rotate(-35deg); }
.hero-line-one { top: 290px; right: -60px; }
.hero-line-two { top: 450px; right: -120px; transform: rotate(48deg); }
.hero-cross { position: absolute; color: rgba(130, 229, 255, .7); font-size: 18px; font-weight: 300; }
.hero-cross-one { top: 160px; right: 39%; }
.hero-cross-two { right: 9%; bottom: 95px; }
.hero-visual { position: absolute; z-index: 1; top: 162px; right: max(5%, calc((100% - 1180px) / 2)); width: 410px; height: 410px; color: rgba(165, 238, 255, .75); transform: translateY(var(--scroll-shift, 0px)) rotateZ(var(--scroll-rotate, 0deg)); transition: transform .12s linear; }
.visual-orbit { position: absolute; inset: 0; border: 1px solid rgba(115, 220, 255, .36); border-radius: 50%; transform: rotate(-28deg) skewX(12deg); }
.visual-orbit::before, .visual-orbit::after { position: absolute; width: 7px; height: 7px; border-radius: 50%; background: #91eaff; box-shadow: 0 0 22px #91eaff; content: ""; }
.visual-orbit::before { top: 22%; left: 4%; }
.visual-orbit::after { right: 9%; bottom: 18%; width: 4px; height: 4px; opacity: .75; }
.visual-orbit-inner { inset: 48px; border-color: rgba(66, 135, 255, .45); transform: rotate(35deg) skewX(-10deg); }
.visual-orbit-inner::before { top: auto; right: 8%; bottom: 9%; }
.visual-orbit-inner::after { top: 11%; right: auto; bottom: auto; left: 8%; }
.visual-orbit-outer { animation: orbit-outer 18s linear infinite; }
.visual-orbit-inner { animation: orbit-inner 11s linear infinite reverse; }
@keyframes orbit-outer { from { transform: rotate(-28deg) skewX(12deg); } to { transform: rotate(332deg) skewX(12deg); } }
@keyframes orbit-inner { from { transform: rotate(35deg) skewX(-10deg); } to { transform: rotate(-325deg) skewX(-10deg); } }
.visual-core { position: absolute; top: 50%; left: 50%; display: flex; align-items: center; justify-content: center; width: 126px; height: 126px; border: 1px solid rgba(154, 239, 255, .85); border-radius: 50%; background: radial-gradient(circle, rgba(69, 187, 255, .28), rgba(6, 20, 39, .95) 67%); box-shadow: 0 0 70px rgba(48, 166, 255, .28), inset 0 0 30px rgba(81, 204, 255, .16); transform: translate(-50%, -50%); text-align: center; }
.visual-core::before, .visual-core::after { position: absolute; border: 1px solid rgba(144, 236, 255, .5); border-radius: 50%; content: ""; animation: core-pulse 3.2s ease-out infinite; }
.visual-core::before { inset: -20px; }
.visual-core::after { inset: -42px; animation-delay: 1.1s; opacity: .5; }
@keyframes core-pulse { 0% { opacity: .7; transform: scale(.72); } 80%, 100% { opacity: 0; transform: scale(1.08); } }
.visual-core span { display: block; color: #a6efff; font-size: 31px; font-weight: 700; letter-spacing: -.08em; }
.visual-core small { position: absolute; top: calc(100% + 14px); width: 120px; color: rgba(174, 236, 255, .55); font-size: 8px; letter-spacing: .16em; line-height: 1.55; }
.visual-cube { position: absolute; top: 50%; left: 50%; width: 118px; height: 118px; transform: translate(-50%, -50%) rotateX(57deg) rotateZ(36deg); transform-style: preserve-3d; animation: cube-drift 11s ease-in-out infinite; }
.visual-cube i { position: absolute; inset: 0; display: block; border: 1px solid rgba(129, 226, 255, .27); background: linear-gradient(135deg, rgba(71, 170, 255, .08), transparent 60%); }
.visual-cube i:nth-child(1) { transform: translateZ(59px); }
.visual-cube i:nth-child(2) { transform: rotateY(180deg) translateZ(59px); }
.visual-cube i:nth-child(3) { transform: rotateY(90deg) translateZ(59px); }
.visual-cube i:nth-child(4) { transform: rotateY(-90deg) translateZ(59px); }
.visual-cube i:nth-child(5) { transform: rotateX(90deg) translateZ(59px); }
.visual-cube i:nth-child(6) { transform: rotateX(-90deg) translateZ(59px); }
@keyframes cube-drift { 0%, 100% { transform: translate(-50%, -50%) rotateX(57deg) rotateZ(36deg); } 50% { transform: translate(-50%, -50%) rotateX(68deg) rotateZ(55deg); } }
.visual-label { position: absolute; color: rgba(171, 239, 255, .48); font-size: 9px; letter-spacing: .16em; }
.visual-label-top { top: -21px; right: 32px; }
.visual-label-bottom { right: -35px; bottom: 27px; transform: rotate(-90deg); transform-origin: right top; }
.ticker { overflow: hidden; color: var(--ink); background: #a7efff; }
.ticker-track { display: flex; align-items: center; gap: 30px; width: max-content; min-height: 48px; padding-left: 28px; animation: ticker 32s linear infinite; font-size: 11px; font-weight: 700; letter-spacing: .16em; }
.ticker-track b { color: #2d72f5; font-size: 13px; }
@keyframes ticker { to { transform: translateX(-50%); } }

.section { padding: 140px 0; }
.intro-layout, .principles-layout { display: grid; grid-template-columns: 28% 1fr; gap: 40px; }
.section-kicker { color: var(--blue); }
h2 { margin-bottom: 28px; font-size: clamp(40px, 5vw, 68px); font-weight: 500; letter-spacing: -.065em; line-height: 1.04; }
h2 span { color: #97a4b4; }
.lead { max-width: 630px; color: var(--ink-soft); font-size: 17px; line-height: 1.9; }
.lead + .lead { margin-top: 18px; }

.section-dark { color: var(--white); background: var(--ink); }
.section-dark .section-kicker { color: #8be2ff; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 40px; margin-bottom: 68px; }
.section-heading h2 { margin-bottom: 0; }
.section-aside { max-width: 190px; margin-bottom: 5px; color: rgba(255,255,255,.5); font-size: 13px; line-height: 1.8; }
.capability-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--dark-line); }
.capability-card { min-height: 370px; padding: 28px 28px 30px 0; border-right: 1px solid var(--dark-line); }
.capability-card + .capability-card { padding-left: 28px; }
.capability-card:last-child { border-right: 0; }
.card-number { display: block; color: rgba(255,255,255,.35); font-size: 11px; letter-spacing: .12em; }
.card-icon { position: relative; display: flex; align-items: end; gap: 5px; height: 70px; margin: 50px 0 34px; }
.card-icon i { display: block; width: 8px; background: linear-gradient(#8de7ff, #3477ff); }
.card-icon i:nth-child(1) { height: 22px; opacity: .5; }
.card-icon i:nth-child(2) { height: 45px; opacity: .75; }
.card-icon i:nth-child(3) { height: 66px; }
.card-icon-data i:nth-child(1) { border-radius: 50%; height: 8px; margin-bottom: 0; }
.card-icon-data i:nth-child(2) { height: 28px; transform: rotate(38deg); }
.card-icon-data i:nth-child(3) { height: 54px; transform: rotate(-38deg); }
.card-icon-connect::before, .card-icon-connect::after { position: absolute; width: 45px; height: 45px; border: 1px solid #56c9ff; border-radius: 50%; content: ""; }
.card-icon-connect::after { left: 31px; border-color: #3d7cff; }
.card-icon-connect i { display: none; }
.capability-card h3 { margin-bottom: 15px; font-size: 22px; font-weight: 500; letter-spacing: -.04em; }
.capability-card p { max-width: 250px; min-height: 68px; color: rgba(255,255,255,.54); font-size: 13px; line-height: 1.8; }
.capability-card a { display: inline-flex; gap: 12px; margin-top: 24px; color: #91e8ff; font-size: 12px; }

.stack-section { padding-top: 110px; border-top: 1px solid var(--dark-line); }
.stack-heading { display: grid; grid-template-columns: 28% 1fr; gap: 40px; }
.stack-heading h2 { margin-bottom: 72px; }
.stack-heading h2 span { color: rgba(255,255,255,.38); }
.stack-layout { display: grid; grid-template-columns: 28% 1fr; gap: 40px; align-items: start; }
.stack-intro { max-width: 245px; color: rgba(255,255,255,.52); font-size: 14px; line-height: 1.9; }
.stack-map { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; border-top: 1px solid var(--dark-line); border-bottom: 1px solid var(--dark-line); }
.stack-map-line { position: absolute; top: 59px; right: 0; left: 0; height: 1px; background: linear-gradient(90deg, #8eeaff, rgba(74, 128, 255, .4), transparent); opacity: .7; }
.data-lattice { position: absolute; z-index: 1; top: 22px; right: 25px; width: 180px; height: 78px; opacity: .42; pointer-events: none; }
.lattice-node { position: absolute; width: 5px; height: 5px; border: 1px solid #91eaff; border-radius: 50%; background: #0a1830; box-shadow: 0 0 12px rgba(145, 234, 255, .75); }
.node-a { top: 6px; left: 12px; }.node-b { top: 31px; left: 71px; }.node-c { top: 2px; right: 8px; }.node-d { right: 36px; bottom: 7px; }.node-e { bottom: 1px; left: 48px; }.node-f { top: 47px; left: 2px; }
.lattice-link { position: absolute; height: 1px; background: linear-gradient(90deg, #91eaff, rgba(64, 129, 255, .15)); transform-origin: left center; }
.link-a { top: 9px; left: 15px; width: 64px; transform: rotate(24deg); }.link-b { top: 34px; left: 74px; width: 78px; transform: rotate(-22deg); }.link-c { top: 49px; left: 5px; width: 48px; transform: rotate(34deg); }
.stack-map article { position: relative; min-height: 205px; padding: 26px 20px 20px 0; }
.stack-map article + article { padding-left: 20px; border-left: 1px solid var(--dark-line); }
.stack-map span { color: #8de5ff; font-size: 10px; letter-spacing: .14em; }
.stack-map h3 { margin: 72px 0 12px; color: var(--white); font-size: 24px; font-weight: 500; letter-spacing: -.04em; }
.stack-map p { margin: 0; color: rgba(255,255,255,.45); font-size: 12px; line-height: 1.7; }

.motion-enabled .reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s cubic-bezier(.2,.8,.2,1); }
.motion-enabled .reveal.is-visible { opacity: 1; transform: translateY(0); }
.motion-enabled .reveal-delay-1 { transition-delay: .1s; }
.motion-enabled .reveal-delay-2 { transition-delay: .2s; }

.principles { background: var(--paper); }
.principle-list { border-top: 1px solid var(--line); }
.principle-item { display: grid; grid-template-columns: 80px 1fr; gap: 24px; padding: 28px 0; border-bottom: 1px solid var(--line); }
.principle-item > span { color: var(--blue); font-size: 11px; letter-spacing: .1em; }
.principle-item h3 { margin-bottom: 8px; font-size: 21px; font-weight: 500; letter-spacing: -.035em; }
.principle-item p { margin-bottom: 0; color: var(--ink-soft); font-size: 13px; line-height: 1.8; }

.contact { padding: 100px 0; background: #dff7ff; }
.contact-panel { display: grid; grid-template-columns: 1fr minmax(280px, 38%); gap: 60px; align-items: end; }
.contact h2 { margin-bottom: 22px; }
.contact-lead { max-width: 460px; margin: 0; color: #486073; font-size: 15px; line-height: 1.9; }
.contact-details { display: grid; gap: 18px; margin: 0; font-style: normal; }
.contact-details span { display: block; margin-bottom: 6px; color: #6a8496; font-size: 11px; letter-spacing: .12em; }
.contact-details p { margin: 0; color: var(--ink); font-size: 14px; line-height: 1.7; }
.contact-details a:hover, .contact-details a:focus-visible { color: var(--blue); }
.site-footer { color: rgba(255,255,255,.55); background: var(--ink); }
.footer-inner { display: flex; align-items: flex-start; justify-content: space-between; gap: 40px; padding: 36px 0; font-size: 11px; }
.footer-brand { color: var(--white); font-size: 12px; }
.footer-brand .brand-mark { width: 24px; height: 24px; font-size: 14px; }
.footer-meta { max-width: 540px; text-align: right; line-height: 1.8; }
.footer-meta p { margin: 0 0 8px; }
.footer-meta p:last-child { margin-bottom: 0; }
.footer-meta a { color: rgba(255,255,255,.78); }
.footer-meta a:hover, .footer-meta a:focus-visible { color: var(--white); }
.beian-link { margin-right: 16px; text-decoration: underline; text-underline-offset: 3px; }

.signal { padding-top: 120px; padding-bottom: 120px; border-top: 1px solid var(--dark-line); }
.signal-layout { display: grid; grid-template-columns: 1fr 46%; gap: 80px; align-items: center; }
.signal h2 { margin-bottom: 22px; }
.signal h2 span { color: rgba(255,255,255,.36); }
.signal-copy { max-width: 280px; margin-bottom: 0; color: rgba(255,255,255,.48); font-size: 14px; line-height: 1.85; }
.signal-console { position: relative; min-height: 245px; padding: 22px; overflow: hidden; border: 1px solid rgba(119, 225, 255, .34); background: radial-gradient(circle at 50% 45%, rgba(47, 126, 246, .22), transparent 48%), rgba(5, 16, 32, .7); box-shadow: 0 25px 80px rgba(0, 0, 0, .24); }
.signal-console::before { position: absolute; inset: 0; background: linear-gradient(transparent 49%, rgba(118, 222, 255, .1) 50%, transparent 51%); background-size: 100% 8px; content: ""; opacity: .35; pointer-events: none; }
.console-header, .console-footer, .console-grid { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; color: rgba(175, 235, 255, .54); font-size: 9px; letter-spacing: .14em; }
.console-header b { color: #8ceaff; font-weight: 500; }
.console-wave { position: relative; z-index: 1; display: flex; align-items: center; justify-content: center; gap: 7px; height: 132px; margin: 11px 0 12px; border-top: 1px solid rgba(135, 229, 255, .14); border-bottom: 1px solid rgba(135, 229, 255, .14); }
.console-wave::before { position: absolute; top: 50%; right: 0; left: 0; height: 1px; background: linear-gradient(90deg, transparent, #73dbff, transparent); content: ""; opacity: .45; }
.console-wave i { display: block; width: 3px; height: 20%; background: linear-gradient(#b1f2ff, #3d7bff); box-shadow: 0 0 10px rgba(80, 199, 255, .5); animation: wave 1.8s ease-in-out infinite alternate; }
.console-wave i:nth-child(2) { height: 42%; animation-delay: -.9s; }.console-wave i:nth-child(3) { height: 72%; animation-delay: -.3s; }.console-wave i:nth-child(4) { height: 33%; animation-delay: -1.3s; }.console-wave i:nth-child(5) { height: 86%; animation-delay: -.6s; }.console-wave i:nth-child(6) { height: 50%; animation-delay: -1.6s; }.console-wave i:nth-child(7) { height: 95%; animation-delay: -.2s; }.console-wave i:nth-child(8) { height: 58%; animation-delay: -1.1s; }.console-wave i:nth-child(9) { height: 76%; animation-delay: -.8s; }.console-wave i:nth-child(10) { height: 38%; animation-delay: -1.5s; }.console-wave i:nth-child(11) { height: 66%; animation-delay: -.4s; }.console-wave i:nth-child(12) { height: 25%; animation-delay: -1.8s; }
@keyframes wave { to { transform: scaleY(.38); opacity: .55; } }
.console-grid { padding-bottom: 13px; color: rgba(177, 239, 255, .32); }
.console-footer { padding-top: 14px; border-top: 1px solid rgba(135, 229, 255, .14); }
.console-footer span:last-child { color: #8ceaff; }

@media (max-width: 760px) {
  .container { width: min(calc(100% - 40px), var(--max-width)); }
  .header-inner { height: 72px; }
  .site-nav { gap: 16px; font-size: 12px; }
  .hero { min-height: 720px; }
  .hero-content { padding-top: 170px; }
  h1 { font-size: clamp(48px, 15vw, 76px); }
  .hero-copy { font-size: 14px; }
  .hero-orb-one { top: 255px; right: -120px; width: 300px; height: 300px; }
  .hero-orb-two { top: 330px; right: 8px; width: 150px; height: 150px; }
  .hero-visual { top: 410px; right: -62px; width: 275px; height: 275px; opacity: .76; }
  .hero-scan-grid { background-size: 48px 48px; transform: perspective(420px) rotateX(63deg) translateY(230px) scale(1.45); }
  .visual-orbit-inner { inset: 34px; }
  .visual-core { width: 90px; height: 90px; }
  .visual-core span { font-size: 23px; }
  .visual-cube { width: 86px; height: 86px; }
  .visual-cube i:nth-child(1), .visual-cube i:nth-child(2), .visual-cube i:nth-child(3), .visual-cube i:nth-child(4), .visual-cube i:nth-child(5), .visual-cube i:nth-child(6) { transform: translateZ(43px); }
  .visual-cube i:nth-child(2) { transform: rotateY(180deg) translateZ(43px); }
  .visual-cube i:nth-child(3) { transform: rotateY(90deg) translateZ(43px); }
  .visual-cube i:nth-child(4) { transform: rotateY(-90deg) translateZ(43px); }
  .visual-cube i:nth-child(5) { transform: rotateX(90deg) translateZ(43px); }
  .visual-cube i:nth-child(6) { transform: rotateX(-90deg) translateZ(43px); }
  .visual-label-top { top: -17px; right: 24px; }
  .visual-label-bottom { right: -31px; bottom: 16px; }
  .hero-footnote { bottom: 27px; }
  .section { padding: 90px 0; }
  .intro-layout, .principles-layout, .contact-panel { grid-template-columns: 1fr; gap: 34px; }
  h2 { font-size: clamp(38px, 11vw, 58px); }
  .section-heading { display: block; margin-bottom: 45px; }
  .section-aside { margin-top: 26px; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-card, .capability-card + .capability-card { min-height: auto; padding: 34px 0; border-right: 0; border-bottom: 1px solid var(--dark-line); }
  .capability-card:last-child { border-bottom: 0; }
  .card-icon { margin-top: 34px; }
  .capability-card p { min-height: auto; }
  .stack-section { padding-top: 90px; }
  .stack-heading, .stack-layout { grid-template-columns: 1fr; gap: 28px; }
  .stack-heading h2 { margin-bottom: 28px; }
  .stack-intro { max-width: 340px; }
  .stack-map { grid-template-columns: 1fr; }
  .stack-map-line { top: 0; right: auto; bottom: 0; left: 19px; width: 1px; height: auto; background: linear-gradient(#8eeaff, rgba(74, 128, 255, .2)); }
  .data-lattice { right: 8px; opacity: .25; transform: scale(.75); transform-origin: top right; }
  .stack-map article, .stack-map article + article { min-height: 150px; padding: 24px 0 24px 48px; border-left: 0; border-bottom: 1px solid var(--dark-line); }
  .stack-map article:last-child { border-bottom: 0; }
  .stack-map h3 { margin: 30px 0 9px; }
  .contact { padding: 80px 0; }
  .contact-details { max-width: 420px; }
  .signal { padding-top: 90px; padding-bottom: 90px; }
  .signal-layout { grid-template-columns: 1fr; gap: 38px; }
  .signal-console { min-height: 220px; padding: 16px; }
  .console-wave { height: 116px; gap: 5px; }
  .footer-inner { display: block; padding: 28px 0; }
  .footer-meta { max-width: none; margin-top: 20px; text-align: left; }
  .beian-link { display: inline-block; margin: 0 12px 8px 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .pointer-glow, .scroll-progress { display: none; }
}