:root {
  color-scheme: light;
  --ink: #071d2b;
  --navy: #123b5d;
  --teal: #12bfa5;
  --teal-deep: #079881;
  --amber: #ffb347;
  --cloud: #f5fafd;
  --paper: #ffffff;
  --line: #dce8ee;
  --text: #1f2933;
  --muted: #617181;
  --display: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  --body: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --content: 1320px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; color: var(--text); background: var(--paper); font-family: var(--body); line-height: 1.65; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 4px; }
.skip-link { position: fixed; top: 12px; left: 12px; z-index: 100; transform: translateY(-160%); padding: 10px 14px; color: var(--ink); background: var(--paper); border-radius: 4px; }
.skip-link:focus { transform: translateY(0); }
.section-pad { padding: clamp(82px, 10vw, 150px) clamp(22px, 7vw, 110px); }
.kicker { margin: 0 0 22px; color: var(--teal); font-size: 11px; font-weight: 800; letter-spacing: .28em; text-transform: uppercase; }
.kicker-dark { color: var(--teal-deep); }
.motion-ready .reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
.motion-ready .reveal.is-visible { opacity: 1; transform: translateY(0); }

.site-header { position: absolute; top: 0; left: 0; right: 0; z-index: 20; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: clamp(24px, 4vw, 68px); padding: 22px clamp(22px, 5vw, 76px); color: #fff; border-bottom: 1px solid rgba(255,255,255,.16); transition: background .3s ease, padding .3s ease, border-color .3s ease; }
.site-header.is-scrolled { position: fixed; padding-top: 12px; padding-bottom: 12px; background: rgba(5,24,37,.88); border-color: rgba(255,255,255,.1); backdrop-filter: blur(18px); box-shadow: 0 12px 34px rgba(0,0,0,.12); }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand img { width: 42px; height: 42px; border-radius: 10px; }
.brand strong, .brand small { display: block; line-height: 1.15; }
.brand strong { font-size: 16px; letter-spacing: .08em; }
.brand small { margin-top: 4px; color: rgba(255,255,255,.62); font-size: 10px; letter-spacing: .16em; text-transform: uppercase; }
.nav { display: flex; justify-content: center; gap: clamp(18px, 2.6vw, 36px); color: rgba(255,255,255,.72); font-size: 13px; }
.nav a, .header-cta, .text-link { transition: color .25s ease, background .25s ease, border-color .25s ease; }
.nav a:hover { color: #fff; }
.header-cta { padding: 9px 16px; border: 1px solid rgba(255,255,255,.46); border-radius: 999px; font-size: 13px; font-weight: 700; }
.header-cta:hover { color: var(--ink); background: #fff; }
.menu-toggle { display: none; width: 38px; height: 38px; align-items: center; justify-content: center; flex-direction: column; gap: 6px; color: #fff; background: transparent; border: 0; }
.menu-toggle span { width: 20px; height: 1px; background: currentColor; transition: transform .2s ease; }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

.hero { position: relative; min-height: 100svh; overflow: hidden; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(380px, .95fr); grid-template-rows: 1fr auto; gap: 42px clamp(30px, 6vw, 96px); align-items: center; padding: 130px clamp(22px, 5vw, 76px) 30px; color: #fff; background: var(--ink); }
.hero-media { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(3,18,30,.98) 0%, rgba(3,18,30,.82) 37%, rgba(3,18,30,.2) 74%, rgba(3,18,30,.54) 100%), linear-gradient(0deg, rgba(3,18,30,.7), transparent 38%), url("/assets/site/hero-future.jpg") center/cover no-repeat; transform: scale(1.015); }
.hero-noise { position: absolute; inset: 0; opacity: .12; background-image: radial-gradient(rgba(255,255,255,.7) .5px, transparent .5px); background-size: 5px 5px; mask-image: linear-gradient(90deg, #000, transparent 75%); }
.hero-content, .route-card, .hero-foot { position: relative; z-index: 2; }
.hero-content { max-width: 790px; padding-top: 24px; }
.hero h1 { margin: 0; font-family: var(--display); font-size: clamp(54px, 7vw, 112px); font-weight: 600; letter-spacing: -.045em; line-height: .98; }
.hero h1 em { color: #fff; font-style: normal; text-shadow: 0 0 44px rgba(18,191,165,.24); }
.hero-lead { max-width: 670px; margin: 30px 0 0; color: rgba(255,255,255,.72); font-size: clamp(16px, 1.5vw, 20px); }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; margin-top: 36px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 22px; border-radius: 4px; font-weight: 800; }
.button-primary { color: #041c28; background: var(--teal); box-shadow: 0 14px 36px rgba(18,191,165,.2); }
.button-primary:hover { background: #3fd5bd; }
.text-link { color: rgba(255,255,255,.84); font-size: 14px; font-weight: 700; }
.text-link span { display: inline-block; margin-left: 6px; color: var(--amber); }
.text-link:hover { color: #fff; }

.route-card { align-self: end; width: min(100%, 560px); margin: 0 0 42px auto; padding: 24px 26px 18px; background: rgba(5,24,37,.62); border: 1px solid rgba(255,255,255,.18); backdrop-filter: blur(18px); }
.route-card-head { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding-bottom: 18px; border-bottom: 1px solid rgba(255,255,255,.12); }
.route-card-head span { font-size: 14px; font-weight: 800; }
.route-card-head small { color: rgba(255,255,255,.42); font-size: 9px; letter-spacing: .18em; }
.route-card ol { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 18px 0 8px; padding: 0; list-style: none; }
.route-card li span, .route-card li strong, .route-card li small { display: block; }
.route-card li span { color: var(--teal); font-size: 10px; }
.route-card li strong { margin-top: 8px; font-family: var(--display); font-size: 22px; font-weight: 600; }
.route-card li small { margin-top: 2px; color: rgba(255,255,255,.42); font-size: 10px; }
.route-line svg { display: block; width: 100%; height: 64px; overflow: visible; }
.route-line path { fill: none; stroke: rgba(18,191,165,.54); stroke-width: 2; vector-effect: non-scaling-stroke; }
.route-line circle { fill: var(--amber); filter: drop-shadow(0 0 6px rgba(255,179,71,.7)); }
.hero-foot { grid-column: 1 / -1; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 18px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.16); color: rgba(255,255,255,.48); font-size: 11px; }
.hero-foot span { color: var(--teal); font-weight: 800; letter-spacing: .14em; }
.hero-foot p { margin: 0; }
.hero-foot a { text-transform: uppercase; letter-spacing: .16em; }

.approach { background: var(--cloud); }
.section-intro { display: grid; grid-template-columns: minmax(0,.82fr) minmax(320px,1.18fr); gap: 22px clamp(34px, 7vw, 112px); align-items: end; max-width: var(--content); margin: 0 auto 62px; }
.section-intro .kicker { grid-column: 1 / -1; margin-bottom: 0; }
.section-intro h2, .products-head h2, .solutions-head h2, .delivery-head h2, .acceptance h2, .scene-copy h2, .contact h2 { margin: 0; font-family: var(--display); font-weight: 600; letter-spacing: -.035em; line-height: 1.08; }
.section-intro h2 { color: var(--ink); font-size: clamp(40px, 5vw, 72px); }
.section-intro > p:last-child { margin: 0 0 8px; color: var(--muted); font-size: clamp(16px, 1.5vw, 20px); }
.challenge-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); max-width: var(--content); margin: 0 auto; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.challenge-grid article { min-height: 250px; padding: 30px 24px; border-right: 1px solid var(--line); }
.challenge-grid article:first-child { border-left: 1px solid var(--line); }
.challenge-grid span { color: var(--teal-deep); font-size: 11px; font-weight: 800; letter-spacing: .14em; }
.challenge-grid h3 { margin: 52px 0 12px; color: var(--ink); font-family: var(--display); font-size: 24px; font-weight: 600; line-height: 1.25; }
.challenge-grid p { margin: 0; color: var(--muted); font-size: 14px; }

.operating-loop { position: relative; overflow: hidden; color: #fff; background: var(--ink); }
.operating-loop::before { content: ""; position: absolute; inset: 0; opacity: .1; background-image: linear-gradient(rgba(18,191,165,.4) 1px, transparent 1px), linear-gradient(90deg, rgba(18,191,165,.4) 1px, transparent 1px); background-size: 80px 80px; mask-image: linear-gradient(90deg, transparent, #000, transparent); }
.loop-intro, .loop-grid { position: relative; z-index: 1; max-width: var(--content); margin-inline: auto; }
.loop-intro { display: grid; grid-template-columns: .7fr 1.3fr; gap: 22px 80px; align-items: end; }
.loop-intro .kicker { grid-column: 1 / -1; margin-bottom: 0; }
.loop-intro h2 { margin: 0; font-family: var(--display); font-size: clamp(42px, 5.5vw, 78px); font-weight: 600; line-height: 1.05; }
.loop-intro > p:last-child { margin: 0 0 8px; color: rgba(255,255,255,.58); font-size: 18px; }
.loop-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 74px; padding: 0; border-top: 1px solid rgba(255,255,255,.18); border-bottom: 1px solid rgba(255,255,255,.18); list-style: none; }
.loop-grid li { display: grid; grid-template-columns: auto 1fr; gap: 18px; min-height: 210px; padding: 28px 22px; border-right: 1px solid rgba(255,255,255,.14); }
.loop-grid li:first-child { border-left: 1px solid rgba(255,255,255,.14); }
.loop-grid > li > span { color: var(--teal); font-size: 11px; font-weight: 800; }
.loop-grid h3 { margin: 48px 0 8px; font-family: var(--display); font-size: 28px; font-weight: 600; }
.loop-grid p { margin: 0; color: rgba(255,255,255,.54); font-size: 13px; }

.products { background: #eef5f8; }
.products-head { display: grid; grid-template-columns: 1.25fr .75fr; gap: clamp(40px, 8vw, 130px); align-items: end; max-width: var(--content); margin: 0 auto 60px; }
.products-head h2 { max-width: 780px; color: var(--ink); font-size: clamp(42px, 5.6vw, 80px); }
.products-head > p { margin: 0 0 10px; color: var(--muted); font-size: 18px; }
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; max-width: var(--content); margin: 0 auto; }
.product-card { min-width: 0; overflow: hidden; background: #fff; border: 1px solid rgba(18,59,93,.12); }
.product-card summary { position: relative; overflow: hidden; min-height: 510px; cursor: pointer; list-style: none; }
.product-card summary::-webkit-details-marker { display: none; }
.product-card summary img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .7s cubic-bezier(.2,.7,.2,1); }
.product-card[open] summary img, .product-card summary:hover img { transform: scale(1.035); }
.product-shade { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(3,18,30,.08), rgba(3,18,30,.88)); }
.product-number { position: absolute; top: 22px; left: 22px; color: rgba(255,255,255,.7); font-size: 11px; font-weight: 800; letter-spacing: .18em; }
.product-copy { position: absolute; left: 22px; right: 22px; bottom: 78px; color: #fff; }
.product-copy small, .product-copy strong, .product-copy em { display: block; }
.product-copy small { color: var(--teal); font-size: 10px; font-weight: 800; letter-spacing: .2em; text-transform: uppercase; }
.product-copy strong { margin-top: 10px; font-family: var(--display); font-size: clamp(26px, 2.6vw, 40px); font-weight: 600; line-height: 1.1; }
.product-copy em { margin-top: 10px; color: rgba(255,255,255,.62); font-size: 13px; font-style: normal; }
.expand-label { position: absolute; right: 22px; bottom: 20px; display: inline-flex; align-items: center; gap: 9px; color: rgba(255,255,255,.65); font-size: 11px; }
.expand-label b { color: var(--amber); font-size: 20px; font-weight: 400; transition: transform .25s ease; }
.product-card[open] .expand-label b { transform: rotate(45deg); }
.product-detail { padding: 24px 22px 26px; color: var(--muted); background: #fff; }
.product-detail p { margin: 0; }
.product-detail ul { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 18px; margin: 20px 0 0; padding: 18px 0 0; border-top: 1px solid var(--line); list-style: none; font-size: 12px; }
.product-detail li::before { content: "·"; margin-right: 7px; color: var(--teal-deep); }

.solutions { position: relative; overflow: hidden; color: #fff; background: #061a28; }
.solutions-media { position: absolute; inset: 0; opacity: .34; background: linear-gradient(90deg, #061a28 0%, rgba(6,26,40,.82) 43%, rgba(6,26,40,.35) 100%), url("/assets/site/destination.jpg") center/cover no-repeat; }
.solutions-inner { position: relative; z-index: 1; }
.solutions-head { max-width: 900px; margin: 0 0 64px; }
.solutions-head h2 { font-size: clamp(42px, 5.6vw, 78px); }
.solutions-head > p:last-child { max-width: 680px; margin: 24px 0 0; color: rgba(255,255,255,.62); font-size: 18px; }
.solution-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; max-width: var(--content); background: rgba(255,255,255,.15); border: 1px solid rgba(255,255,255,.15); }
.solution-grid article { min-height: 300px; padding: 28px; background: rgba(4,22,34,.76); backdrop-filter: blur(10px); }
.solution-grid span { float: right; color: var(--teal); font-size: 11px; font-weight: 800; }
.solution-grid small { color: rgba(255,255,255,.46); font-size: 10px; letter-spacing: .08em; }
.solution-grid h3 { margin: 62px 0 12px; font-family: var(--display); font-size: 27px; font-weight: 600; }
.solution-grid p { margin: 0; color: rgba(255,255,255,.58); font-size: 13px; }
.solution-grid b { display: block; margin-top: 28px; color: var(--amber); font-size: 11px; font-weight: 700; }

.delivery { background: var(--paper); }
.delivery-head { display: grid; grid-template-columns: 1.05fr .95fr; gap: 24px 90px; align-items: end; max-width: var(--content); margin: 0 auto 72px; }
.delivery-head .kicker { grid-column: 1 / -1; margin-bottom: 0; }
.delivery-head h2 { color: var(--ink); font-size: clamp(42px, 5.4vw, 76px); }
.delivery-head > p:last-child { margin: 0 0 10px; color: var(--muted); font-size: 18px; }
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); max-width: var(--content); margin: 0 auto; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.timeline li { position: relative; min-height: 330px; padding: 32px 24px; border-right: 1px solid var(--line); }
.timeline li:first-child { border-left: 1px solid var(--line); }
.timeline li::before { content: ""; position: absolute; top: -5px; left: 22px; width: 9px; height: 9px; background: var(--teal); border-radius: 50%; box-shadow: 0 0 0 6px rgba(18,191,165,.12); }
.timeline li > span { color: var(--teal-deep); font-size: 11px; font-weight: 800; }
.timeline-duration { margin-top: 52px; color: var(--muted); font-size: 12px; }
.timeline h3 { margin: 8px 0 14px; color: var(--ink); font-family: var(--display); font-size: 30px; font-weight: 600; }
.timeline p { margin: 0; color: var(--muted); font-size: 14px; }
.timeline small { display: block; margin-top: 24px; padding-top: 18px; color: var(--navy); border-top: 1px solid var(--line); font-size: 11px; }
.timeline-note { max-width: var(--content); margin: 20px auto 0; color: var(--muted); font-size: 11px; }

.acceptance { display: grid; grid-template-columns: minmax(280px,.78fr) minmax(0,1.22fr); gap: clamp(48px, 9vw, 150px); color: #fff; background: var(--navy); }
.acceptance-title h2 { max-width: 650px; font-size: clamp(42px, 5.3vw, 76px); }
.acceptance-body ol { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; margin: 0; padding: 0; border-top: 1px solid rgba(255,255,255,.17); list-style: none; }
.acceptance-body li { display: grid; grid-template-columns: auto 1fr; gap: 14px; min-height: 96px; padding: 24px 18px; border-right: 1px solid rgba(255,255,255,.17); border-bottom: 1px solid rgba(255,255,255,.17); color: rgba(255,255,255,.78); }
.acceptance-body li:nth-child(odd) { border-left: 1px solid rgba(255,255,255,.17); }
.acceptance-body li span { color: var(--teal); font-size: 10px; font-weight: 800; }
.boundary { display: grid; grid-template-columns: auto 1fr; gap: 20px; margin-top: 30px; padding: 22px; background: rgba(4,22,34,.34); border-left: 3px solid var(--amber); }
.boundary span { color: var(--amber); font-size: 11px; font-weight: 800; }
.boundary p { margin: 0; color: rgba(255,255,255,.58); font-size: 13px; }

.faq { display: grid; grid-template-columns: minmax(280px,.78fr) minmax(0,1.22fr); gap: clamp(48px, 9vw, 150px); background: #fff; }
.faq-copy h2 { margin: 0; color: var(--ink); font-family: var(--display); font-size: 56px; font-weight: 600; line-height: 1.08; }
.faq-copy > p:last-child { max-width: 560px; margin: 24px 0 0; color: var(--muted); }
.faq-grid { align-self: start; border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary { position: relative; padding: 22px 48px 22px 0; color: var(--ink); cursor: pointer; list-style: none; font-weight: 800; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "＋"; position: absolute; top: 22px; right: 4px; color: var(--teal-deep); font-size: 20px; font-weight: 400; transition: transform .2s ease; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { max-width: 820px; margin: 0; padding: 0 48px 24px 0; color: var(--muted); font-size: 14px; }

.scene-assets { display: grid; grid-template-columns: minmax(300px,.75fr) minmax(0,1.25fr); gap: clamp(50px, 8vw, 130px); background: var(--cloud); }
.scene-copy h2 { max-width: 620px; color: var(--ink); font-size: clamp(42px, 5.2vw, 72px); }
.scene-copy > p:last-child { max-width: 600px; margin: 24px 0 0; color: var(--muted); }
.scene-list { align-self: end; border-top: 1px solid var(--line); }
.scene-list article { display: grid; grid-template-columns: .75fr 1.25fr; gap: 24px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.scene-list span { color: var(--ink); font-family: var(--display); font-size: 22px; }
.scene-list p { margin: 4px 0 0; color: var(--muted); font-size: 13px; }

.contact { display: grid; grid-template-columns: minmax(0,1.15fr) minmax(300px,.85fr); gap: clamp(50px, 8vw, 130px); color: #fff; background: var(--ink); }
.contact-copy h2 { max-width: 760px; font-size: clamp(48px, 6.4vw, 92px); }
.contact-copy > p { max-width: 680px; margin: 28px 0 34px; color: rgba(255,255,255,.58); font-size: 18px; }
.contact-card { align-self: end; display: grid; gap: 15px; padding: 30px; font-style: normal; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.14); }
.contact-card span { color: rgba(255,255,255,.48); font-size: 12px; }
.contact-card strong { font-family: var(--display); font-size: 27px; font-weight: 600; }
.contact-card a { color: var(--teal); font-size: 18px; font-weight: 800; }
.contact-card small { color: rgba(255,255,255,.42); }
.site-footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; padding: 26px clamp(22px, 5vw, 76px); color: var(--muted); background: #fff; border-top: 1px solid var(--line); font-size: 12px; }
.site-footer a:hover { color: var(--navy); }

@media (max-width: 1120px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .product-card summary { min-height: 480px; }
  .solution-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .site-header { grid-template-columns: auto 1fr auto; }
  .menu-toggle { display: flex; justify-self: end; }
  .header-cta { display: none; }
  .nav { position: absolute; top: 100%; left: 18px; right: 18px; display: grid; gap: 0; max-height: 0; overflow: hidden; color: #fff; background: rgba(5,24,37,.97); border: 0 solid rgba(255,255,255,.12); transition: max-height .3s ease, border-width .3s ease; }
  .nav.is-open { max-height: 260px; border-width: 1px; }
  .nav a { padding: 14px 18px; border-bottom: 1px solid rgba(255,255,255,.1); }
  .nav a:last-child { border-bottom: 0; }
  .hero { grid-template-columns: 1fr; grid-template-rows: auto auto auto; padding-top: 140px; }
  .hero-content { padding-top: 0; }
  .route-card { align-self: auto; width: min(100%, 680px); margin: 0; }
  .section-intro, .loop-intro, .products-head, .delivery-head, .acceptance, .faq, .scene-assets, .contact { grid-template-columns: 1fr; }
  .challenge-grid, .loop-grid, .timeline { grid-template-columns: repeat(2, 1fr); }
  .challenge-grid article:nth-child(n+3), .loop-grid li:nth-child(n+3) { border-top: 1px solid var(--line); }
  .loop-grid li:nth-child(n+3) { border-top-color: rgba(255,255,255,.14); }
  .products-head > p, .delivery-head > p:last-child { max-width: 700px; }
  .acceptance-body { max-width: 780px; }
  .faq-grid, .scene-list, .contact-card { max-width: 760px; }
}

@media (max-width: 620px) {
  .section-pad { padding: 74px 18px; }
  .site-header { padding: 14px 18px; }
  .brand img { width: 38px; height: 38px; }
  .hero { min-height: auto; padding: 120px 18px 24px; }
  .hero-media { background-position: 64% center; }
  .hero h1 { font-size: clamp(48px, 15vw, 68px); }
  .hero-lead { margin-top: 24px; }
  .route-card { padding: 20px 16px 14px; }
  .route-card-head small { display: none; }
  .route-card ol { gap: 6px; }
  .route-card li strong { font-size: 18px; }
  .route-card li small { font-size: 9px; }
  .hero-foot { grid-template-columns: 1fr auto; }
  .hero-foot p { display: none; }
  .section-intro, .loop-intro { gap: 20px; }
  .challenge-grid, .loop-grid, .product-grid, .solution-grid, .timeline, .acceptance-body ol { grid-template-columns: 1fr; }
  .challenge-grid article, .loop-grid li, .timeline li { min-height: auto; border-left: 1px solid var(--line); border-top: 1px solid var(--line); }
  .challenge-grid article:first-child, .loop-grid li:first-child, .timeline li:first-child { border-top: 0; }
  .challenge-grid h3 { margin-top: 28px; }
  .loop-grid { margin-top: 50px; }
  .loop-grid li { border-left-color: rgba(255,255,255,.14); border-top-color: rgba(255,255,255,.14); }
  .loop-grid h3 { margin-top: 20px; }
  .product-card summary { min-height: 450px; }
  .product-detail ul { grid-template-columns: 1fr; }
  .solution-grid article { min-height: 270px; }
  .timeline li { min-height: 270px; }
  .timeline li::before { display: none; }
  .timeline-duration { margin-top: 30px; }
  .acceptance-body li:nth-child(even) { border-left: 1px solid rgba(255,255,255,.17); }
  .boundary { grid-template-columns: 1fr; }
  .faq-copy h2 { font-size: 42px; }
  .faq-item summary { padding-right: 34px; }
  .faq-item p { padding-right: 0; }
  .scene-list article { grid-template-columns: 1fr; gap: 4px; }
  .site-footer { flex-direction: column; }
}

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