:root {
  --ink: #071a2f;
  --ink-soft: #112b46;
  --blue: #176efb;
  --cyan: #67dcf4;
  --mint: #78e6cd;
  --paper: #f2f6f7;
  --white: #ffffff;
  --muted: #617083;
  --line: rgba(7, 26, 47, 0.14);
  --shell: min(1180px, calc(100vw - 48px));
  --font-sans: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--font-sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.shell { width: var(--shell); margin-inline: auto; }
.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; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 100; padding: 12px 16px; background: white; border-radius: 4px; transition: top .2s; }
.skip-link:focus { top: 16px; }

.site-header { position: fixed; inset: 0 0 auto; z-index: 50; color: white; border-bottom: 1px solid rgba(255,255,255,.1); transition: background .35s, backdrop-filter .35s, box-shadow .35s; }
.site-header.scrolled { background: rgba(7,26,47,.9); backdrop-filter: blur(18px); box-shadow: 0 10px 40px rgba(3,14,27,.14); }
.nav-wrap { height: 82px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand-mark { width: 38px; height: 38px; fill: none; stroke: currentColor; stroke-width: 1.4; }
.brand-copy { display: flex; flex-direction: column; line-height: 1; }
.brand-copy strong { font-size: 17px; letter-spacing: .18em; }
.brand-copy small { margin-top: 7px; font-size: 8px; letter-spacing: .3em; opacity: .66; }
.site-nav { display: flex; align-items: center; gap: 38px; font-size: 14px; }
.site-nav > a { position: relative; opacity: .78; transition: opacity .2s; }
.site-nav > a:not(.nav-cta)::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -10px; height: 1px; background: var(--cyan); transition: right .25s; }
.site-nav > a:hover { opacity: 1; }
.site-nav > a:hover::after { right: 0; }
.site-nav .nav-cta { padding: 11px 18px; border: 1px solid rgba(255,255,255,.38); opacity: 1; transition: background .2s, color .2s; }
.site-nav .nav-cta:hover { background: white; color: var(--ink); }
.menu-button { display: none; }

.hero { position: relative; min-height: 810px; height: 100svh; overflow: hidden; color: white; background: radial-gradient(circle at 78% 34%, #123a63 0, #091f38 34%, #06172a 68%, #04111f 100%); }
.hero::after { content: ""; position: absolute; inset: auto 0 0; height: 170px; background: linear-gradient(transparent, rgba(3,14,26,.42)); pointer-events: none; }
.hero-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(160,220,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(160,220,255,.045) 1px, transparent 1px); background-size: 70px 70px; mask-image: linear-gradient(to right, transparent, black 25%, black 80%, transparent); }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(12px); opacity: .28; }
.hero-glow-a { width: 520px; height: 520px; right: 6%; top: 12%; background: radial-gradient(circle, #1b8cff, transparent 68%); }
.hero-glow-b { width: 330px; height: 330px; right: 25%; bottom: -8%; background: radial-gradient(circle, #4fdbc5, transparent 70%); }
.hero-layout { position: relative; z-index: 2; min-height: 100%; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; padding-top: 70px; }
.hero-copy { padding-bottom: 18px; }
.eyebrow { display: flex; align-items: center; gap: 12px; margin: 0 0 30px; color: #9dcae9; font-size: 10px; font-weight: 600; letter-spacing: .24em; }
.eyebrow span { width: 28px; height: 1px; background: var(--mint); }
.hero h1 { margin: 0; font-size: clamp(52px, 5.8vw, 84px); line-height: 1.1; letter-spacing: -.055em; font-weight: 530; }
.hero h1 em { display: inline-block; margin-top: 10px; color: transparent; background: linear-gradient(100deg, #fff 10%, #91dff1 52%, #79e3cb); background-clip: text; font-style: normal; }
.hero-lead { max-width: 570px; margin: 34px 0 0; color: rgba(223,238,248,.72); font-size: 17px; line-height: 2; }
.hero-actions { display: flex; align-items: center; gap: 34px; margin-top: 44px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 42px; min-width: 180px; padding: 16px 18px; font-size: 14px; font-weight: 600; transition: transform .2s, background .2s, color .2s; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--ink); background: linear-gradient(100deg, #75dff2, #77e5c9); box-shadow: 0 12px 32px rgba(87,213,212,.18); }
.button-primary:hover { background: white; }
.text-link { display: inline-flex; gap: 20px; color: rgba(255,255,255,.72); font-size: 13px; }
.text-link span { color: var(--mint); }
.crystal-stage { position: relative; display: grid; place-items: center; height: 610px; transform: translateX(30px); }
.crystal { position: relative; z-index: 2; width: min(100%, 500px); height: 580px; overflow: visible; animation: float 7s ease-in-out infinite; }
.face { stroke: rgba(189,239,255,.6); stroke-width: 1.2; }
.face-c { fill: rgba(35,121,200,.12); }
.face-d { fill: rgba(71,222,199,.08); }
.crystal-line { fill: none; stroke: rgba(213,247,255,.72); stroke-width: 1; }
.orbit { position: absolute; border: 1px solid rgba(131,220,242,.16); border-radius: 50%; transform: rotate(-18deg); }
.orbit-one { width: 510px; height: 210px; }
.orbit-two { width: 390px; height: 540px; transform: rotate(34deg); }
.data-tag { position: absolute; z-index: 3; color: rgba(174,219,239,.48); font-size: 8px; letter-spacing: .22em; }
.tag-one { top: 22%; left: 2%; }
.tag-two { right: 0; bottom: 21%; }
.hero-footer { position: absolute; z-index: 4; left: 50%; bottom: 30px; transform: translateX(-50%); display: flex; align-items: center; gap: 18px; color: rgba(184,211,227,.38); font-size: 8px; letter-spacing: .24em; }
.scroll-line { flex: 1; height: 1px; background: rgba(184,211,227,.18); }

.section { padding: 140px 0; }
.section-grid { display: grid; grid-template-columns: 190px 1fr; gap: 80px; }
.section-index { padding-top: 10px; }
.section-index span { color: var(--blue); font-size: 11px; font-weight: 700; }
.section-index p { margin: 14px 0 0; color: #91a0ae; font-size: 9px; letter-spacing: .2em; }
.section-kicker { margin: 0 0 24px; color: var(--blue); font-size: 12px; font-weight: 650; letter-spacing: .22em; }
.section h2 { margin: 0; font-size: clamp(38px, 4.4vw, 64px); line-height: 1.28; letter-spacing: -.045em; font-weight: 510; }
.section h2 span { color: var(--blue); }
.about { background: #f5f8f8; }
.about-copy { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; margin-top: 58px; padding-top: 34px; border-top: 1px solid var(--line); }
.about-copy p { margin: 0; color: var(--muted); font-size: 15px; line-height: 2; }

.capabilities { color: white; background: var(--ink); }
.section-heading { display: flex; justify-content: space-between; align-items: end; }
.section-kicker.light { color: var(--cyan); }
.heading-note { width: 310px; margin: 0 0 8px; color: rgba(219,234,242,.56); font-size: 14px; line-height: 1.8; }
.capability-list { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 72px; border-top: 1px solid rgba(255,255,255,.13); border-bottom: 1px solid rgba(255,255,255,.13); }
.capability-card { position: relative; min-height: 380px; padding: 42px 34px 32px; border-right: 1px solid rgba(255,255,255,.13); transition: background .35s, transform .35s; overflow: hidden; }
.capability-card:first-child { border-left: 1px solid rgba(255,255,255,.13); }
.capability-card::before { content: ""; position: absolute; width: 250px; height: 250px; right: -110px; bottom: -140px; border-radius: 50%; background: radial-gradient(circle, rgba(86,213,205,.2), transparent 68%); opacity: 0; transition: opacity .35s; }
.capability-card:hover { background: rgba(255,255,255,.035); transform: translateY(-5px); }
.capability-card:hover::before { opacity: 1; }
.card-number { color: rgba(255,255,255,.34); font-size: 10px; }
.card-icon { position: relative; width: 52px; height: 52px; margin-top: 44px; border: 1px solid rgba(111,221,236,.48); transform: rotate(45deg); }
.card-icon span { position: absolute; background: var(--cyan); opacity: .7; }
.card-icon span:first-child { width: 68px; height: 1px; left: -9px; top: 25px; }
.card-icon span:last-child { width: 1px; height: 68px; left: 25px; top: -9px; }
.icon-plan { border-radius: 50%; transform: none; }
.icon-plan span:first-child { transform: rotate(-35deg); }
.icon-plan span:last-child { transform: rotate(35deg); }
.icon-delivery { border-radius: 50% 0 50% 50%; }
.capability-card h3 { margin: 42px 0 16px; font-size: 24px; font-weight: 520; }
.capability-card p { margin: 0; color: rgba(219,234,242,.57); font-size: 13px; line-height: 1.9; }
.card-en { position: absolute; left: 34px; bottom: 30px; color: rgba(255,255,255,.22); font-size: 8px; letter-spacing: .2em; }

.approach { background: white; }
.approach-heading { padding-bottom: 52px; }
.process-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.process-list li { display: grid; grid-template-columns: 72px 1fr 48px; align-items: center; gap: 20px; min-height: 135px; border-bottom: 1px solid var(--line); }
.process-number { color: var(--blue); font-size: 10px; font-weight: 700; }
.process-list h3 { margin: 0 0 8px; font-size: 21px; font-weight: 540; }
.process-list p { margin: 0; color: var(--muted); font-size: 13px; }
.process-symbol { color: #64b9c8; font-size: 25px; text-align: right; }

.contact { position: relative; overflow: hidden; padding: 130px 0 140px; color: white; background: linear-gradient(125deg, #0c3154, #071b30 58%, #061827); }
.contact::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(160,220,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(160,220,255,.04) 1px, transparent 1px); background-size: 60px 60px; }
.contact-glow { position: absolute; width: 540px; height: 540px; right: -120px; top: -160px; border: 1px solid rgba(116,226,216,.16); border-radius: 50%; box-shadow: 0 0 0 90px rgba(72,172,213,.025), 0 0 0 180px rgba(72,172,213,.02); }
.contact-inner { position: relative; z-index: 1; }
.contact h2 { margin: 0; font-size: clamp(43px, 5.4vw, 72px); line-height: 1.26; letter-spacing: -.05em; font-weight: 510; }
.contact h2 span { color: var(--mint); }
.contact-inner > p:not(.eyebrow) { margin: 28px 0 36px; color: rgba(222,237,245,.6); font-size: 14px; }
.button-light { min-width: 286px; color: var(--ink); background: white; }
.button-light:hover { background: var(--mint); }

.site-footer { color: rgba(255,255,255,.72); background: #04111f; }
.footer-top { display: grid; grid-template-columns: 1fr 1.5fr auto; align-items: center; gap: 40px; min-height: 150px; }
.footer-brand { color: white; }
.footer-company { display: flex; flex-direction: column; gap: 8px; font-size: 12px; }
.footer-company strong { color: rgba(255,255,255,.78); font-weight: 500; }
.footer-company span { color: rgba(255,255,255,.3); font-size: 8px; letter-spacing: .12em; }
.back-top { color: rgba(255,255,255,.48); font-size: 11px; }
.footer-bottom { display: flex; justify-content: space-between; padding: 20px 0 28px; border-top: 1px solid rgba(255,255,255,.08); color: rgba(255,255,255,.28); font-size: 9px; letter-spacing: .08em; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s cubic-bezier(.2,.65,.3,1); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-small { transition-delay: .1s; }
.reveal-delay { transition-delay: .2s; }
@keyframes float { 0%,100% { transform: translateY(-6px) rotate(-1deg); } 50% { transform: translateY(10px) rotate(1deg); } }

@media (max-width: 900px) {
  :root { --shell: min(100% - 36px, 680px); }
  .nav-wrap { height: 70px; }
  .menu-button { display: grid; width: 42px; height: 42px; place-content: center; gap: 5px; color: white; border: 0; background: transparent; cursor: pointer; }
  .menu-button > span:not(.sr-only) { width: 22px; height: 1px; background: currentColor; transition: transform .2s, opacity .2s; }
  .menu-button[aria-expanded="true"] > span:first-child { transform: translateY(6px) rotate(45deg); }
  .menu-button[aria-expanded="true"] > span:nth-child(2) { opacity: 0; }
  .menu-button[aria-expanded="true"] > span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .site-nav { position: absolute; left: 0; right: 0; top: 70px; display: grid; gap: 0; padding: 10px 18px 24px; background: rgba(7,26,47,.98); border-bottom: 1px solid rgba(255,255,255,.1); transform: translateY(-130%); opacity: 0; pointer-events: none; transition: transform .3s, opacity .3s; }
  .site-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .site-nav a { padding: 16px 8px; }
  .site-nav .nav-cta { margin-top: 8px; text-align: center; }
  .hero { min-height: 780px; height: auto; }
  .hero-layout { grid-template-columns: 1fr; padding-top: 150px; padding-bottom: 100px; }
  .hero-copy { z-index: 5; }
  .hero-lead { max-width: 500px; }
  .crystal-stage { position: absolute; width: 480px; height: 540px; right: -200px; top: 180px; opacity: .48; }
  .hero h1 { font-size: clamp(48px, 11vw, 70px); }
  .section { padding: 100px 0; }
  .section-grid { grid-template-columns: 1fr; gap: 34px; }
  .section-index { display: flex; align-items: center; gap: 12px; }
  .section-index p { margin: 0; }
  .section-heading { align-items: start; gap: 40px; }
  .capability-list { grid-template-columns: 1fr; }
  .capability-card, .capability-card:first-child { min-height: 330px; border-left: 1px solid rgba(255,255,255,.13); border-bottom: 1px solid rgba(255,255,255,.13); }
  .footer-top { grid-template-columns: 1fr auto; }
  .footer-company { grid-column: 1 / -1; grid-row: 2; padding-bottom: 28px; }
}

@media (max-width: 620px) {
  :root { --shell: calc(100% - 32px); }
  .brand-copy strong { font-size: 15px; }
  .hero { min-height: 760px; }
  .hero-layout { padding-top: 135px; padding-bottom: 90px; }
  .hero h1 { font-size: 46px; }
  .hero-lead { font-size: 15px; line-height: 1.85; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 24px; margin-top: 34px; }
  .hero-footer { display: none; }
  .crystal-stage { right: -270px; top: 170px; opacity: .4; }
  .section { padding: 82px 0; }
  .section h2 { font-size: 36px; }
  .about-copy { grid-template-columns: 1fr; gap: 24px; margin-top: 38px; }
  .section-heading { display: block; }
  .heading-note { width: auto; margin-top: 28px; }
  .capability-list { margin-top: 45px; }
  .capability-card { padding-inline: 26px; }
  .process-list li { grid-template-columns: 42px 1fr 24px; min-height: 125px; gap: 10px; }
  .process-list p { line-height: 1.7; }
  .contact { padding: 95px 0 105px; }
  .contact h2 { font-size: 39px; }
  .button-light { min-width: min(286px, 100%); gap: 22px; }
  .footer-top { min-height: 190px; }
  .footer-company { line-height: 1.7; }
}

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