:root {
  --ink: #172033;
  --muted: #58657a;
  --blue: #356df3;
  --blue-deep: #2354d8;
  --ice: #edf5ff;
  --violet: #7969e8;
  --line: rgba(89, 108, 143, 0.18);
  --glass: rgba(255, 255, 255, 0.7);
  --shadow: 0 28px 80px rgba(55, 76, 118, 0.13);
  --radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 110px; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 4%, rgba(148, 200, 255, 0.28), transparent 30rem),
    radial-gradient(circle at 84% 20%, rgba(190, 173, 255, 0.2), transparent 30rem),
    linear-gradient(180deg, #f8fafc 0%, #eff4fa 56%, #f9fafc 100%);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; }
.section-shell { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.section { padding: 112px 0 0; }
.glass {
  background: var(--glass);
  border: 1px solid rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow);
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
}
.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; z-index: 100; left: 18px; top: -60px; padding: 12px 18px; background: #fff; border-radius: 12px; box-shadow: var(--shadow); }
.skip-link:focus { top: 18px; }

.ambient { position: fixed; z-index: -1; border-radius: 999px; filter: blur(10px); pointer-events: none; }
.ambient-one { width: 340px; height: 340px; left: -170px; top: 42%; background: rgba(125, 186, 255, 0.14); }
.ambient-two { width: 420px; height: 420px; right: -250px; top: 60%; background: rgba(143, 128, 238, 0.13); }

.site-header { position: sticky; top: 0; z-index: 20; padding: 20px 24px 0; }
.nav { width: min(1180px, 100%); height: 72px; margin: 0 auto; padding: 0 24px; border-radius: 22px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-size: 18px; font-weight: 800; letter-spacing: -.02em; }
.brand-mark { width: 35px; height: 35px; display: grid; place-items: center; border-radius: 12px; color: #fff; font-size: 15px; background: linear-gradient(145deg, #3d7bf6, #7768e6); box-shadow: 0 9px 24px rgba(53, 109, 243, 0.28); }
.nav-links { display: flex; gap: 34px; align-items: center; }
.nav-links a { color: #354158; font-size: 14px; font-weight: 650; }
.nav-links a:hover, .nav-links a:focus-visible { color: var(--blue); }
.nav-toggle { display: none; width: 44px; height: 44px; border: 0; border-radius: 14px; background: rgba(238, 243, 251, .9); }
.nav-toggle span:not(.sr-only) { width: 19px; height: 2px; background: var(--ink); display: block; margin: 5px auto; border-radius: 2px; }

.hero { min-height: calc(100vh - 92px); padding-top: clamp(64px, 9vh, 110px); padding-bottom: 74px; display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: clamp(46px, 7vw, 94px); }
.eyebrow { margin: 0 0 19px; color: var(--blue); font-size: 13px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.hero h1 { margin: 0; max-width: 680px; font-size: clamp(48px, 6.25vw, 82px); line-height: 1.04; letter-spacing: -.065em; }
.hero h1 span { color: transparent; background: linear-gradient(90deg, var(--blue), var(--violet)); background-clip: text; -webkit-background-clip: text; }
.hero-lead { max-width: 660px; margin: 30px 0 0; color: #37455d; font-size: clamp(18px, 1.7vw, 22px); line-height: 1.75; font-weight: 520; }
.hero-note { max-width: 600px; margin: 16px 0 0; color: var(--muted); font-size: 15px; line-height: 1.8; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.button { min-height: 50px; padding: 0 22px; border-radius: 15px; display: inline-flex; align-items: center; justify-content: center; gap: 18px; border: 1px solid transparent; cursor: pointer; font-weight: 750; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: linear-gradient(135deg, var(--blue), #625fe5); box-shadow: 0 14px 34px rgba(53, 109, 243, .26); }
.button-primary:hover { box-shadow: 0 18px 38px rgba(53, 109, 243, .32); }
.button-quiet { background: rgba(255, 255, 255, .55); border-color: rgba(83, 101, 136, .18); color: #2c3b54; }
.hero-points { display: flex; flex-wrap: wrap; gap: 22px; margin: 32px 0 0; padding: 0; list-style: none; color: #58657a; font-size: 13px; font-weight: 650; }
.hero-points li::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 9px; border-radius: 50%; background: var(--blue); vertical-align: 2px; }

.hero-visual { min-height: 490px; border-radius: 36px; padding: 28px; overflow: hidden; position: relative; background: linear-gradient(145deg, rgba(255,255,255,.8), rgba(232,240,252,.6)); }
.hero-visual::after { content: ""; position: absolute; width: 250px; height: 250px; right: -90px; bottom: -100px; background: rgba(116, 104, 232, .18); border-radius: 50%; filter: blur(10px); }
.visual-topline { display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: 13px; font-weight: 700; }
.status { color: #287c60; }
.status i { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: #38b883; margin-right: 6px; box-shadow: 0 0 0 5px rgba(56,184,131,.1); }
.orbit { width: 330px; height: 330px; margin: 22px auto 0; position: relative; display: grid; place-items: center; }
.orbit-ring { position: absolute; border: 1px solid rgba(71, 103, 170, .17); border-radius: 50%; }
.orbit-ring-one { inset: 27px; }
.orbit-ring-two { inset: 70px; border-style: dashed; }
.core { width: 116px; height: 116px; display: grid; place-items: center; color: #fff; border-radius: 34px; background: linear-gradient(145deg, #3b78f4, #7767e7); box-shadow: 0 30px 70px rgba(77, 92, 218, .3); transform: rotate(-4deg); }
.core svg { width: 52px; height: 52px; transform: rotate(4deg); }
.node { position: absolute; width: 64px; height: 64px; display: grid; place-items: center; border-radius: 22px; color: #344259; background: rgba(255,255,255,.85); border: 1px solid rgba(255,255,255,.95); box-shadow: 0 14px 30px rgba(68,86,125,.12); font-size: 13px; font-weight: 800; }
.node-a { top: 18px; left: 48px; }
.node-b { top: 82px; right: 10px; }
.node-c { bottom: 12px; left: 48px; }
.visual-result { position: relative; z-index: 1; padding: 17px 18px; border-radius: 18px; background: rgba(255,255,255,.6); border: 1px solid rgba(255,255,255,.8); display: flex; justify-content: space-between; align-items: center; gap: 18px; }
.visual-result span { color: var(--muted); font-size: 12px; }
.visual-result strong { text-align: right; font-size: 13px; }

.section-heading { display: grid; grid-template-columns: 1fr 1fr; column-gap: 60px; align-items: end; margin-bottom: 42px; }
.section-heading .eyebrow { grid-column: 1 / -1; }
.section-heading h2 { margin: 0; font-size: clamp(36px, 4.5vw, 58px); line-height: 1.12; letter-spacing: -.045em; }
.section-heading > p:last-child { margin: 0 0 5px; color: var(--muted); font-size: 16px; line-height: 1.8; }
.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.service-card { position: relative; min-height: 330px; padding: 34px; border-radius: var(--radius); transition: transform .25s ease, border-color .25s ease; }
.service-card:hover { transform: translateY(-5px); border-color: rgba(93, 128, 211, .24); }
.service-index { position: absolute; top: 32px; right: 32px; color: rgba(45, 68, 111, .34); font-size: 12px; font-weight: 800; letter-spacing: .12em; }
.icon-wrap { width: 58px; height: 58px; margin-bottom: 30px; display: grid; place-items: center; border-radius: 18px; color: var(--blue); background: linear-gradient(145deg, rgba(231,243,255,.95), rgba(240,236,255,.95)); }
.icon-wrap svg { width: 34px; height: 34px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.service-card h3 { margin: 0 0 14px; font-size: 24px; letter-spacing: -.025em; }
.service-card > p { margin: 0; max-width: 500px; color: var(--muted); line-height: 1.8; }
.service-output { position: absolute; left: 34px; right: 34px; bottom: 30px; padding-top: 18px; border-top: 1px solid var(--line); color: #344259; font-size: 13px; font-weight: 650; }
.service-output span { color: var(--blue); margin-right: 12px; }

.process-panel { border-radius: 38px; padding: clamp(34px, 6vw, 72px); display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(50px, 8vw, 100px); }
.process-heading { display: block; margin: 0; align-self: start; }
.process-heading h2 { margin-bottom: 25px; }
.process-heading > p:last-child { margin: 0; }
.process-list { margin: 0; padding: 0; list-style: none; }
.process-list li { display: grid; grid-template-columns: 64px 1fr; gap: 18px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.process-list li:first-child { padding-top: 0; }
.process-list li:last-child { border-bottom: 0; padding-bottom: 0; }
.step-num { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 15px; color: var(--blue); background: rgba(225, 237, 255, .8); font-size: 12px; font-weight: 800; }
.process-list h3 { margin: 0 0 7px; font-size: 20px; }
.process-list p { margin: 0; color: var(--muted); line-height: 1.65; }

.about-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(50px, 8vw, 110px); align-items: start; }
.about-grid .section-heading { display: block; margin: 0; position: sticky; top: 120px; }
.about-copy { border-radius: 32px; padding: clamp(32px, 5vw, 58px); }
.about-company { margin: 0 0 10px; color: var(--blue); font-size: 13px; font-weight: 800; }
.about-copy h3 { margin: 0 0 28px; font-size: clamp(25px, 3vw, 36px); line-height: 1.35; letter-spacing: -.03em; }
.about-copy > p:not(.about-company) { color: var(--muted); line-height: 1.9; }
.about-boundary { margin-top: 32px; padding: 24px; border-radius: 20px; background: rgba(229, 239, 252, .64); border: 1px solid rgba(122, 148, 194, .12); }
.about-boundary strong { font-size: 15px; }
.about-boundary p { margin: 8px 0 0; color: var(--muted); line-height: 1.75; font-size: 14px; }

.contact-panel { padding: clamp(36px, 6vw, 72px); border-radius: 38px; display: flex; justify-content: space-between; align-items: end; gap: 40px; background: linear-gradient(135deg, rgba(255,255,255,.8), rgba(228,237,253,.72)); }
.contact-panel h2 { margin: 0; font-size: clamp(36px, 5vw, 60px); letter-spacing: -.05em; }
.contact-panel p:last-child { max-width: 680px; margin: 20px 0 0; color: var(--muted); line-height: 1.8; }
.contact-button { flex: 0 0 auto; }

.footer { margin-top: 112px; padding: 48px 0; background: #172033; color: #fff; }
.footer-inner { display: flex; justify-content: space-between; gap: 40px; align-items: flex-end; }
.footer-brand { margin-bottom: 18px; }
.footer-inner > div:first-child > p { margin: 0; color: rgba(255,255,255,.68); font-size: 14px; }
.footer-meta { color: rgba(255,255,255,.64); font-size: 12px; line-height: 1.8; text-align: right; }
.footer-meta p { margin: 3px 0; }
.footer-meta a:hover, .footer-meta a:focus-visible { color: #fff; text-decoration: underline; }

.contact-dialog { width: min(430px, calc(100% - 32px)); padding: 38px; border: 1px solid rgba(255,255,255,.9); border-radius: 28px; color: var(--ink); background: rgba(248,250,253,.96); box-shadow: 0 34px 100px rgba(24, 36, 64, .3); text-align: center; }
.contact-dialog::backdrop { background: rgba(25, 34, 55, .42); -webkit-backdrop-filter: blur(7px); backdrop-filter: blur(7px); }
.contact-dialog .eyebrow { margin-bottom: 9px; }
.contact-dialog h2 { margin: 0 0 22px; font-size: 28px; }
.contact-dialog img { display: block; width: 258px; max-width: 100%; height: auto; margin: 0 auto; border-radius: 20px; }
.contact-dialog > p:last-child { margin: 20px auto 0; max-width: 290px; color: var(--muted); line-height: 1.7; font-size: 14px; }
.dialog-close { position: absolute; right: 14px; top: 14px; width: 38px; height: 38px; border: 0; border-radius: 12px; background: #eaf0f8; color: #3e4c63; cursor: pointer; font-size: 24px; line-height: 1; }

:focus-visible { outline: 3px solid rgba(53,109,243,.35); outline-offset: 3px; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; min-height: auto; padding-top: 76px; }
  .hero-visual { min-height: 450px; }
  .section-heading, .process-panel, .about-grid { grid-template-columns: 1fr; }
  .section-heading > p:last-child { margin-top: 22px; }
  .about-grid .section-heading { position: static; }
  .contact-panel { display: grid; align-items: start; }
  .contact-button { justify-self: start; }
}

@media (max-width: 680px) {
  .section-shell { width: min(100% - 32px, 1180px); }
  .site-header { padding: 12px 12px 0; }
  .nav { height: 64px; padding: 0 15px; border-radius: 18px; }
  .nav-toggle { display: block; }
  .nav-links { position: absolute; top: 72px; left: 12px; right: 12px; padding: 14px; display: none; flex-direction: column; align-items: stretch; gap: 2px; border-radius: 18px; background: rgba(255,255,255,.96); border: 1px solid rgba(255,255,255,.9); box-shadow: var(--shadow); }
  .nav-links.is-open { display: flex; }
  .nav-links a { padding: 13px 12px; border-radius: 10px; }
  .hero { width: min(100% - 36px, 1180px); padding-top: 64px; padding-bottom: 28px; }
  .hero h1 { font-size: clamp(44px, 13vw, 61px); }
  .hero-lead { font-size: 18px; line-height: 1.7; }
  .hero-actions .button { flex: 1; }
  .hero-points { gap: 12px 18px; }
  .hero-visual { min-height: 400px; padding: 20px; border-radius: 28px; }
  .orbit { width: 280px; height: 280px; max-width: 100%; }
  .orbit-ring-one { inset: 18px; }
  .orbit-ring-two { inset: 58px; }
  .node { width: 56px; height: 56px; border-radius: 18px; }
  .node-a { left: 30px; }
  .node-b { right: 2px; }
  .node-c { left: 35px; }
  .visual-result { display: grid; gap: 5px; }
  .visual-result strong { text-align: left; }
  .section { padding-top: 84px; }
  .section-heading { margin-bottom: 30px; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 340px; padding: 28px; }
  .service-output { left: 28px; right: 28px; }
  .process-panel, .about-copy, .contact-panel { border-radius: 27px; }
  .process-list li { grid-template-columns: 54px 1fr; }
  .footer { margin-top: 84px; }
  .footer-inner { display: grid; align-items: start; }
  .footer-meta { text-align: left; }
}

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

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .glass { background: #f8fafc; }
}

/* Banner-led glass redesign */
:root {
  --ink: #edf6ff;
  --muted: #a9bad0;
  --blue: #3ba7ff;
  --blue-deep: #1683e8;
  --violet: #6176ff;
  --line: rgba(159, 207, 255, .16);
  --glass: rgba(8, 25, 53, .62);
  --shadow: 0 28px 90px rgba(0, 8, 25, .34);
}

body {
  background:
    radial-gradient(circle at 12% 20%, rgba(0, 139, 255, .18), transparent 32rem),
    radial-gradient(circle at 88% 62%, rgba(58, 91, 255, .16), transparent 34rem),
    linear-gradient(180deg, #061225 0%, #091b35 48%, #07142a 100%);
}

.glass {
  background: var(--glass);
  border-color: rgba(197, 228, 255, .19);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, .07);
  -webkit-backdrop-filter: blur(22px) saturate(125%);
  backdrop-filter: blur(22px) saturate(125%);
}

.ambient-one { background: rgba(0, 153, 255, .15); }
.ambient-two { background: rgba(71, 95, 255, .15); }

.site-header { padding-top: 16px; }
.nav {
  background: rgba(5, 18, 39, .68);
  border-color: rgba(195, 226, 255, .18);
}
.brand { color: #f4f9ff; }
.brand-name { white-space: nowrap; }
.brand-mark {
  background: linear-gradient(145deg, #20a7ff, #526bff);
  box-shadow: 0 9px 28px rgba(20, 145, 255, .34);
}
.nav-links a { color: #c7d6e7; }
.nav-links a:hover, .nav-links a:focus-visible { color: #61bdff; }

.hero {
  min-height: min(780px, calc(100vh - 72px));
  margin-top: 24px;
  padding: clamp(56px, 8vw, 92px);
  border: 1px solid rgba(187, 224, 255, .2);
  border-radius: 42px;
  overflow: hidden;
  position: relative;
  grid-template-columns: minmax(0, 1.12fr) minmax(260px, .58fr);
  align-items: end;
  isolation: isolate;
  box-shadow: 0 40px 110px rgba(0, 5, 20, .52);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(2, 10, 26, .74) 0%, rgba(4, 14, 33, .36) 52%, rgba(3, 12, 29, .16) 100%),
    linear-gradient(0deg, rgba(2, 11, 28, .76) 0%, transparent 55%);
}
.hero-backdrop {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero-backdrop img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
}
.hero-copy {
  max-width: 700px;
  padding: clamp(28px, 4vw, 48px);
  border-radius: 32px;
  background: rgba(4, 19, 43, .58);
}
.eyebrow { color: #5cc3ff; }
.hero h1 {
  max-width: 640px;
  font-size: clamp(48px, 5.8vw, 78px);
  text-shadow: 0 8px 34px rgba(0, 6, 20, .38);
}
.hero h1 span {
  background-image: linear-gradient(90deg, #54c9ff, #8aa3ff);
}
.hero-lead { color: #d6e5f5; }
.button-primary {
  background: linear-gradient(135deg, #159eff, #536cff);
  box-shadow: 0 14px 38px rgba(25, 142, 255, .3);
}
.button-quiet {
  color: #edf6ff;
  background: rgba(220, 239, 255, .09);
  border-color: rgba(199, 228, 255, .22);
}
.hero-points { color: #bcd0e4; }
.hero-points li::before { background: #50c2ff; box-shadow: 0 0 0 4px rgba(80, 194, 255, .12); }
.hero-aside {
  align-self: end;
  padding: 25px 26px;
  border-radius: 24px;
  background: rgba(5, 21, 46, .56);
}
.hero-aside > span { color: #70caff; font-size: 12px; font-weight: 800; letter-spacing: .12em; }
.hero-aside strong { display: block; margin-top: 11px; color: #fff; font-size: 17px; line-height: 1.55; }
.hero-aside p { margin: 10px 0 0; color: #b5c8dc; font-size: 14px; line-height: 1.7; }

.section-heading > p:last-child,
.service-card > p,
.process-list p,
.about-copy > p:not(.about-company),
.about-boundary p,
.contact-panel p:last-child { color: var(--muted); }
.service-card,
.process-panel,
.about-copy,
.contact-panel { background: rgba(10, 29, 59, .66); }
.service-card:hover { border-color: rgba(76, 181, 255, .4); }
.service-index { color: rgba(146, 205, 255, .48); }
.icon-wrap {
  color: #61c5ff;
  background: linear-gradient(145deg, rgba(33, 146, 240, .2), rgba(72, 94, 255, .18));
}
.service-output { color: #d5e5f5; }
.service-output span { color: #5cc3ff; }
.step-num { color: #69c8ff; background: rgba(35, 145, 236, .16); }
.about-boundary { background: rgba(33, 90, 151, .15); border-color: rgba(114, 190, 255, .15); }
.contact-panel { background: linear-gradient(135deg, rgba(10, 34, 70, .78), rgba(16, 40, 83, .64)); }
.footer { background: #030b19; border-top: 1px solid rgba(154, 207, 255, .12); }

.contact-dialog { color: #172033; }
.contact-dialog .eyebrow { color: #287fd6; }
.contact-dialog > p:last-child { color: #58657a; }

@media (max-width: 900px) {
  .hero {
    min-height: 760px;
    padding: 34px;
    grid-template-columns: 1fr;
    align-content: end;
    gap: 20px;
  }
  .hero-copy { max-width: 650px; }
  .hero-aside { max-width: 440px; }
}

@media (max-width: 680px) {
  .brand { gap: 8px; font-size: 13px; }
  .brand-mark { width: 32px; height: 32px; border-radius: 10px; flex: 0 0 auto; }
  .brand-name { max-width: calc(100vw - 130px); overflow: hidden; text-overflow: ellipsis; }
  .nav-toggle { background: rgba(214, 235, 255, .12); }
  .nav-toggle span:not(.sr-only) { background: #f2f8ff; }
  .nav-links { background: rgba(5, 18, 39, .96); border-color: rgba(188, 224, 255, .16); }
  .hero {
    width: min(100% - 24px, 1180px);
    min-height: 720px;
    margin-top: 14px;
    padding: 18px;
    border-radius: 29px;
  }
  .hero::before {
    background: linear-gradient(0deg, rgba(2, 10, 26, .92) 0%, rgba(3, 13, 31, .45) 74%, rgba(3, 13, 31, .1) 100%);
  }
  .hero-backdrop img { object-position: center top; }
  .hero-copy { padding: 25px 22px; border-radius: 24px; }
  .hero h1 { font-size: clamp(40px, 12vw, 57px); }
  .hero-lead { font-size: 16px; line-height: 1.65; }
  .hero-points { margin-top: 24px; }
  .hero-aside { padding: 20px 22px; border-radius: 20px; }
}