:root {
  --ink: #101827;
  --ink-soft: #536176;
  --night: #0b1324;
  --night-soft: #131f35;
  --paper: #f5f7fb;
  --line: #d8dfeb;
  --line-dark: rgba(225, 234, 249, 0.18);
  --accent: #4d7cff;
  --accent-bright: #6d93ff;
  --radius: 12px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif; font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.container { width: min(1180px, calc(100% - 64px)); margin: 0 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: 10px 16px; background: var(--accent); color: white; border-radius: 6px; transition: top 180ms ease; }
.skip-link:focus { top: 16px; }

.site-header { position: absolute; top: 0; left: 0; right: 0; z-index: 10; color: #fff; }
.header-inner { min-height: 92px; display: flex; align-items: center; justify-content: space-between; gap: 40px; border-bottom: 1px solid var(--line-dark); }
.brand, .footer-brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-copy { display: grid; gap: 1px; }
.brand-copy strong { font-size: 16px; font-weight: 700; letter-spacing: .03em; }
.brand-copy small { color: rgba(235, 241, 251, .5); font-size: 8px; line-height: 1; letter-spacing: .14em; }
.brand-mark { display: inline-flex; align-items: end; gap: 3px; height: 22px; width: 25px; }
.brand-mark span { display: block; width: 6px; background: var(--accent-bright); border-radius: 2px 2px 0 0; }
.brand-mark span:nth-child(1) { height: 11px; opacity: .65; }
.brand-mark span:nth-child(2) { height: 17px; }
.brand-mark span:nth-child(3) { height: 22px; opacity: .8; }
.site-nav { display: flex; align-items: center; gap: 34px; font-size: 13px; color: rgba(238, 244, 254, .72); }
.site-nav a { transition: color 180ms ease; }
.site-nav a:hover, .site-nav a:focus-visible { color: white; }
.nav-cta { display: inline-flex; align-items: center; gap: 9px; color: #fff !important; border: 1px solid rgba(255,255,255,.34); border-radius: 999px; padding: 8px 15px; }
.nav-cta span, .button span { font-size: 17px; line-height: 1; }
.menu-toggle { display: none; border: 0; background: transparent; color: white; padding: 8px; }

.hero { position: relative; min-height: 720px; overflow: hidden; background: var(--night); color: #fff; }
.hero-grid { position: absolute; inset: 0; opacity: .25; background-image: linear-gradient(rgba(171, 193, 227, .08) 1px, transparent 1px), linear-gradient(90deg, rgba(171, 193, 227, .08) 1px, transparent 1px); background-size: 84px 84px; mask-image: linear-gradient(90deg, black 0%, transparent 78%); }
.hero::after { content: ""; position: absolute; top: 0; right: -12%; width: 56%; height: 100%; background: linear-gradient(120deg, transparent 18%, rgba(77,124,255,.09) 44%, transparent 70%); transform: skewX(-16deg); pointer-events: none; }
.hero-inner { position: relative; z-index: 1; min-height: 720px; display: grid; grid-template-columns: minmax(0, .95fr) minmax(460px, .9fr); align-items: center; gap: clamp(48px, 8vw, 130px); padding-top: 74px; }
.hero-copy { max-width: 600px; }
.eyebrow, .section-kicker { margin: 0; color: var(--accent-bright); font-size: 11px; font-weight: 700; letter-spacing: .17em; text-transform: uppercase; }
.eyebrow { display: flex; align-items: center; gap: 9px; color: #abc0f3; }
.eyebrow-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent-bright); box-shadow: 0 0 0 5px rgba(109,147,255,.12); }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 630px; margin: 28px 0 24px; font-size: clamp(43px, 5.2vw, 72px); font-weight: 600; letter-spacing: -.055em; line-height: 1.08; }
h1 em { color: var(--accent-bright); font-style: normal; }
.hero-summary { max-width: 490px; margin-bottom: 34px; color: rgba(232, 238, 249, .66); font-size: 16px; line-height: 1.9; }
.hero-actions { display: flex; align-items: center; gap: 27px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 16px; min-height: 48px; padding: 0 20px; border-radius: 999px; font-size: 14px; font-weight: 700; transition: transform 180ms ease, background 180ms ease, color 180ms ease; }
.button:hover, .button:focus-visible { transform: translateY(-2px); }
.button:active { transform: translateY(0) scale(.98); }
.button-primary { background: var(--accent); color: white; box-shadow: 0 14px 35px rgba(30, 68, 168, .28); }
.button-primary:hover, .button-primary:focus-visible { background: var(--accent-bright); }
.text-link { display: inline-flex; align-items: center; gap: 10px; color: rgba(238, 244, 254, .7); font-size: 14px; }
.text-link:hover, .text-link:focus-visible { color: white; }
.hero-meta { display: flex; align-items: center; gap: 13px; margin-top: 75px; color: rgba(221, 232, 252, .38); font-size: 10px; letter-spacing: .14em; }
.meta-line { width: 42px; height: 1px; background: rgba(221,232,252,.3); }
.hero-visual { position: relative; width: 100%; max-width: 520px; justify-self: end; }
.visual-topline, .visual-footline { display: flex; justify-content: space-between; color: rgba(221,232,252,.45); font-size: 9px; letter-spacing: .16em; }
.visual-topline { margin-bottom: 16px; }
.live-status { display: inline-flex; align-items: center; gap: 7px; color: rgba(150, 230, 194, .65); }
.live-status i { width: 5px; height: 5px; border-radius: 50%; background: #7cd8ad; }
.signal-board { position: relative; height: 360px; overflow: hidden; border: 1px solid rgba(180, 203, 240, .23); background: rgba(20, 33, 56, .62); }
.signal-board::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 70% 30%, rgba(77, 124, 255, .19), transparent 36%); }
.board-axis { position: absolute; background: rgba(191, 209, 240, .12); }
.axis-x { top: 54%; left: 8%; width: 84%; height: 1px; }
.axis-y { top: 12%; left: 38%; width: 1px; height: 76%; }
.signal-lines { position: absolute; inset: 0; width: 100%; height: 100%; }
.signal-lines path { stroke: rgba(124, 162, 255, .65); stroke-width: 1.1; stroke-dasharray: 5 7; animation: dash 12s linear infinite; }
.signal-lines circle { fill: var(--accent-bright); filter: drop-shadow(0 0 5px rgba(109,147,255,.85)); }
@keyframes dash { to { stroke-dashoffset: -120; } }
.board-label { position: absolute; color: rgba(221,232,252,.34); font-size: 9px; letter-spacing: .15em; }
.board-label-a { top: 15%; left: 11%; }.board-label-b { top: 15%; left: 54%; }.board-label-c { bottom: 14%; left: 57%; }
.node { position: absolute; display: grid; justify-items: center; gap: 8px; color: #e8eefb; font-size: 11px; }
.node small { font-size: 10px; color: rgba(226,234,249,.6); }
.node-core { display: block; width: 14px; height: 14px; border: 1px solid var(--accent-bright); border-radius: 50%; background: var(--night-soft); box-shadow: 0 0 0 7px rgba(77,124,255,.1), 0 0 22px rgba(77,124,255,.26); }
.node-a { top: 22%; left: 8%; }.node-b { top: 40%; left: 32%; }.node-c { top: 20%; left: 59%; }.node-d { top: 63%; left: 61%; }
.board-caption { position: absolute; right: 22px; bottom: 22px; color: rgba(222,231,248,.48); font-size: 10px; line-height: 1.7; }.board-caption strong { color: #ecf2ff; font-size: 13px; font-weight: 500; }
.board-index { position: absolute; top: 20px; right: 22px; color: rgba(222,231,248,.55); font-family: Georgia, serif; font-size: 16px; }.board-index span { margin: 0 4px; color: var(--accent-bright); font-family: Arial, sans-serif; font-size: 10px; }
.visual-footline { margin-top: 15px; }
.scroll-cue { position: absolute; z-index: 1; left: 50%; bottom: 28px; display: flex; align-items: center; gap: 14px; color: rgba(221,232,252,.35); font-size: 9px; letter-spacing: .14em; transform: translateX(-50%); }.scroll-cue i { display: block; width: 36px; height: 1px; background: rgba(221,232,252,.32); }

.section { padding: 130px 0; }
.intro { background: var(--paper); }
.intro-grid { display: grid; grid-template-columns: 1fr 2.3fr; gap: 40px; }
.section-kicker { color: #5a709c; }
.intro-content h2, .section-heading h2, .values-intro h2, .contact h2 { margin: 0; font-size: clamp(35px, 4.4vw, 58px); font-weight: 550; letter-spacing: -.055em; line-height: 1.18; }
.intro-content h2 span, .values-intro h2 span, .contact h2 span { color: var(--accent); }
.intro-columns { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 45px; max-width: 690px; margin-top: 56px; color: var(--ink-soft); font-size: 15px; line-height: 1.9; }
.intro-columns p { margin: 0; }
.services { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-heading { display: grid; grid-template-columns: 1fr 2.3fr; gap: 40px; align-items: start; margin-bottom: 65px; }
.service-list { border-top: 1px solid var(--line); }
.service-item { display: grid; grid-template-columns: 1fr 2.2fr 40px; align-items: center; gap: 40px; min-height: 130px; border-bottom: 1px solid var(--line); transition: background 180ms ease, padding 180ms ease; }
.service-item:hover { padding-left: 15px; background: #fafbfe; }
.service-number { color: var(--accent); font-size: 12px; letter-spacing: .12em; }.service-item h3 { margin-bottom: 6px; font-size: 20px; font-weight: 600; letter-spacing: -.02em; }.service-item p { margin: 0; color: var(--ink-soft); font-size: 14px; }.service-arrow { color: var(--accent); font-size: 22px; text-align: right; }
.values { background: #eaf0fa; }.values-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 90px; }.value-notes { border-top: 1px solid rgba(30, 58, 107, .22); }.value-note { display: grid; grid-template-columns: 46px 90px 1fr; gap: 20px; align-items: baseline; padding: 23px 0; border-bottom: 1px solid rgba(30, 58, 107, .22); }.value-note span { color: var(--accent); font-size: 11px; letter-spacing: .1em; }.value-note strong { font-size: 18px; font-weight: 600; }.value-note p { margin: 0; color: var(--ink-soft); font-size: 14px; }
.contact { background: var(--night); color: #fff; }.contact-inner { display: grid; grid-template-columns: 1fr 1.9fr; gap: 40px; align-items: start; }.contact h2 { margin-top: 5px; }.contact-copy { grid-column: 2; max-width: 370px; margin: 44px 0 29px; color: rgba(231,239,252,.6); font-size: 15px; line-height: 1.9; }.button-light { grid-column: 2; justify-self: start; background: #fff; color: var(--ink); }.button-light:hover, .button-light:focus-visible { background: var(--accent-bright); color: #fff; }
.site-footer { background: #fff; }.footer-main { display: grid; grid-template-columns: 1fr 1fr auto; gap: 30px; align-items: center; min-height: 126px; border-bottom: 1px solid var(--line); }.footer-brand strong { font-size: 14px; }.footer-main p { margin: 0; color: var(--ink-soft); font-size: 13px; }.footer-top { color: var(--accent); font-size: 12px; }.footer-top span { margin-left: 8px; font-size: 17px; }.footer-legal { display: flex; flex-wrap: wrap; gap: 11px 29px; padding: 20px 0 28px; color: #8490a4; font-size: 11px; }.footer-legal p, .footer-legal a { margin: 0; }.footer-legal a { color: #667da8; }.footer-legal a:hover, .footer-legal a:focus-visible { color: var(--accent); }
.reveal { opacity: 1; transform: none; }.js .reveal { opacity: 0; transform: translateY(20px); transition: opacity 700ms ease, transform 700ms ease; }.js .reveal.is-visible { opacity: 1; transform: translateY(0); }.js .reveal-delay { transition-delay: 110ms; }

@media (max-width: 900px) { .container { width: min(100% - 40px, 680px); }.hero, .hero-inner { min-height: auto; }.hero-inner { grid-template-columns: 1fr; gap: 65px; padding-top: 150px; padding-bottom: 120px; }.hero-visual { justify-self: stretch; max-width: none; }.scroll-cue { display: none; }.intro-grid, .section-heading { grid-template-columns: 1fr; gap: 25px; }.intro-columns { margin-top: 38px; }.values-grid { grid-template-columns: 1fr; gap: 52px; }.contact-inner { grid-template-columns: 1fr; gap: 25px; }.contact-copy, .button-light { grid-column: auto; }.contact-copy { margin: 10px 0 4px; }.footer-main { grid-template-columns: 1fr auto; }.footer-main p { grid-column: 1 / -1; grid-row: 2; padding-bottom: 20px; }.footer-top { grid-column: 2; grid-row: 1; } }
@media (max-width: 640px) { .container { width: min(100% - 32px, 520px); }.header-inner { min-height: 76px; }.site-nav { position: absolute; top: 76px; left: 16px; right: 16px; display: grid; gap: 0; padding: 8px; border: 1px solid rgba(216,227,247,.2); border-radius: var(--radius); background: #101c31; opacity: 0; pointer-events: none; transform: translateY(-8px); transition: opacity 180ms ease, transform 180ms ease; }.site-nav.is-open { opacity: 1; pointer-events: auto; transform: translateY(0); }.site-nav a { padding: 13px 14px; }.nav-cta { margin-top: 5px; justify-content: center; }.menu-toggle { display: block; }.menu-icon { display: grid; gap: 5px; }.menu-icon i { display: block; width: 24px; height: 1px; background: #fff; transition: transform 180ms ease; }.menu-toggle[aria-expanded="true"] .menu-icon i:first-child { transform: translateY(3px) rotate(45deg); }.menu-toggle[aria-expanded="true"] .menu-icon i:last-child { transform: translateY(-3px) rotate(-45deg); }.hero-inner { padding-top: 127px; padding-bottom: 92px; gap: 53px; }.hero h1 { margin-top: 23px; font-size: clamp(39px, 11vw, 53px); }.hero-summary { font-size: 14px; line-height: 1.8; }.hero-meta { margin-top: 53px; }.signal-board { height: 305px; }.node-a { top: 22%; left: 5%; }.node-b { left: 29%; }.node-c { left: 55%; }.node-d { left: 58%; }.board-caption { right: 14px; bottom: 15px; }.section { padding: 88px 0; }.intro-columns { grid-template-columns: 1fr; gap: 17px; margin-top: 34px; }.section-heading { margin-bottom: 42px; }.service-item { grid-template-columns: 34px 1fr 25px; gap: 14px; min-height: 142px; }.service-item h3 { font-size: 18px; }.service-item p { font-size: 13px; line-height: 1.7; }.service-item:hover { padding-left: 0; background: none; }.value-note { grid-template-columns: 32px 66px 1fr; gap: 12px; }.value-note p { font-size: 13px; }.footer-main { min-height: 145px; }.footer-legal { display: grid; gap: 8px; padding-bottom: 25px; }.footer-legal p, .footer-legal a { font-size: 10px; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; }.signal-lines path { animation: none; }.js .reveal { transition: none; transform: none; } }