:root {
  --navy-950: #07152d;
  --navy-900: #0a1b38;
  --navy-800: #10294f;
  --blue-700: #1555b6;
  --blue-600: #1d65d6;
  --blue-50: #f1f6ff;
  --ink: #0c1b33;
  --muted: #5c687a;
  --line: #dce3ed;
  --line-dark: rgba(255,255,255,.14);
  --surface: #ffffff;
  --surface-alt: #f5f7fa;
  --shadow: 0 22px 60px rgba(17, 39, 78, .1);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 30px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; color: var(--ink); background: var(--surface); font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
a:focus-visible, summary:focus-visible { outline: 3px solid #70a8ff; outline-offset: 4px; border-radius: 6px; }
.skip-link { position: fixed; top: 12px; left: 12px; z-index: 100; transform: translateY(-160%); padding: 10px 16px; color: #fff; background: var(--navy-950); border-radius: 8px; }
.skip-link:focus { transform: translateY(0); }
.container { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }

.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.94); border-bottom: 1px solid rgba(220,227,237,.8); backdrop-filter: blur(16px); }
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 76px; }
.brand { display: inline-flex; align-items: center; }
.brand-logo { display: block; width: auto; height: 30px; }
.desktop-nav { display: flex; align-items: center; gap: 30px; }
.desktop-nav > a:not(.button) { color: #354159; font-size: 14px; font-weight: 650; }
.desktop-nav > a:not(.button):hover { color: var(--blue-700); }
.mobile-menu { display: none; position: relative; }

.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: 10px; padding: 0 22px; border: 1px solid var(--blue-700); border-radius: 999px; color: #fff; background: var(--blue-700); font-size: 14px; font-weight: 750; box-shadow: 0 10px 26px rgba(21,85,182,.18); transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
.button:hover { background: #0f489f; box-shadow: 0 14px 30px rgba(21,85,182,.26); transform: translateY(-2px); }
.button-small { min-height: 40px; padding-inline: 18px; }
.button-ghost { color: var(--navy-900); background: transparent; border-color: #c8d1df; box-shadow: none; }
.button-ghost:hover { color: var(--blue-700); background: var(--blue-50); border-color: #a9bfe2; box-shadow: none; }

.hero { position: relative; overflow: hidden; background: linear-gradient(145deg, #fff 5%, #f5f8fd 55%, #eaf2ff 100%); border-bottom: 1px solid var(--line); }
.hero::before { content: ""; position: absolute; width: 520px; height: 520px; right: -180px; top: -210px; border-radius: 50%; background: radial-gradient(circle, rgba(29,101,214,.14), rgba(29,101,214,0) 68%); pointer-events: none; }
.hero-grid { position: relative; display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(380px, .82fr); gap: 80px; align-items: center; min-height: 690px; padding-block: 88px; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 20px; color: var(--blue-700); font-size: 11px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow span { width: 26px; height: 1px; background: currentColor; }
.hero h1 { max-width: 760px; margin: 0; color: var(--navy-950); font-size: clamp(42px, 5vw, 68px); line-height: 1.15; letter-spacing: -.04em; }
.hero h1 em { color: var(--blue-700); font-style: normal; }
.hero-intro { max-width: 660px; margin: 28px 0 0; color: var(--muted); font-size: 17px; line-height: 1.9; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px 24px; margin: 32px 0 0; padding: 0; color: #59677c; font-size: 13px; list-style: none; }
.hero-tags li { position: relative; padding-left: 14px; }
.hero-tags li::before { content: ""; position: absolute; left: 0; top: .72em; width: 4px; height: 4px; border-radius: 50%; background: var(--blue-600); }

.scope-panel { position: relative; padding: 30px; overflow: hidden; color: #fff; background: linear-gradient(150deg, var(--navy-950), #0d2a57); border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius-lg); box-shadow: 0 28px 70px rgba(7,21,45,.23); }
.scope-panel::after { content: "W"; position: absolute; right: -20px; bottom: -96px; color: rgba(255,255,255,.035); font-size: 250px; font-weight: 900; line-height: 1; pointer-events: none; }
.scope-head { position: relative; z-index: 1; display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.scope-head p { margin: 0; font-size: 17px; font-weight: 750; }
.scope-head span { color: #86b7ff; font-size: 9px; font-weight: 800; letter-spacing: .12em; }
.scope-list { position: relative; z-index: 1; border-top: 1px solid var(--line-dark); }
.scope-list a { display: grid; grid-template-columns: 34px 1fr; gap: 0 12px; padding: 19px 4px; border-bottom: 1px solid var(--line-dark); }
.scope-list a:hover strong { color: #8fbdff; }
.scope-list span { grid-row: 1 / 3; padding-top: 3px; color: #7196c9; font-size: 11px; font-weight: 800; }
.scope-list strong { font-size: 15px; transition: color .2s ease; }
.scope-list small { margin-top: 2px; color: #9badc7; font-size: 11px; }
.scope-note { position: relative; z-index: 1; margin: 20px 0 0; color: #b7c5d9; font-size: 12px; }

.section { padding-block: 112px; }
.section-heading { display: grid; grid-template-columns: 1fr minmax(320px, .7fr); gap: 64px; align-items: end; margin-bottom: 54px; }
.section-heading .eyebrow { margin-bottom: 12px; }
.section-heading h2, .about h2, .contact h2 { margin: 0; color: var(--navy-950); font-size: clamp(34px, 4vw, 50px); line-height: 1.2; letter-spacing: -.035em; }
.section-heading > p { margin: 0 0 4px; color: var(--muted); font-size: 15px; }

.products { background: #fff; }
.category-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.category-card { min-height: 270px; padding: 30px 26px; background: #fff; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: background .2s ease, transform .2s ease, box-shadow .2s ease; }
.category-card:hover { position: relative; z-index: 1; background: var(--blue-50); box-shadow: var(--shadow); transform: translateY(-4px); }
.category-card > span { display: block; margin-bottom: 42px; color: var(--blue-600); font-size: 11px; font-weight: 800; letter-spacing: .08em; }
.category-card h3 { margin: 0 0 12px; color: var(--navy-900); font-size: 19px; }
.category-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

.services { position: relative; overflow: hidden; color: #fff; background: var(--navy-950); }
.services::after { content: ""; position: absolute; width: 560px; height: 560px; left: -270px; bottom: -330px; border: 1px solid rgba(78,139,227,.18); border-radius: 50%; }
.section-heading-light { position: relative; z-index: 1; }
.section-heading-light h2 { color: #fff; }
.section-heading-light > p { color: #9eadc1; }
.section-heading-light .eyebrow { color: #7fb0f5; }
.service-grid { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.service-card { min-height: 270px; padding: 30px; background: rgba(255,255,255,.045); border: 1px solid rgba(255,255,255,.11); border-radius: var(--radius-sm); }
.service-card > span { color: #79aef8; font-size: 9px; font-weight: 800; letter-spacing: .14em; }
.service-card h3 { margin: 74px 0 12px; font-size: 20px; }
.service-card p { margin: 0; color: #aebed3; font-size: 13px; }

.about { background: var(--surface-alt); }
.about-grid { display: grid; grid-template-columns: .85fr 1fr; gap: 100px; }
.about-copy > p { margin: 34px 0 0; color: #4e5c70; font-size: 17px; line-height: 2; }
.about-audiences { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; }
.about-audiences span { padding: 8px 14px; color: #354866; background: #fff; border: 1px solid var(--line); border-radius: 999px; font-size: 12px; font-weight: 650; }

.contact { background: #fff; }
.contact-panel { display: grid; grid-template-columns: 1fr auto; gap: 60px; align-items: center; padding: 54px 60px; background: linear-gradient(135deg, #eff5ff, #f9fbff); border: 1px solid #d8e5f7; border-radius: var(--radius-lg); }
.contact-panel .eyebrow { margin-bottom: 12px; }
.contact-panel h2 { font-size: clamp(30px, 3.5vw, 44px); }
.contact-panel > div > p:last-child { margin: 14px 0 0; color: var(--muted); }
.contact-link { display: grid; grid-template-columns: 1fr auto; min-width: 310px; padding: 22px 24px; color: #fff; background: var(--blue-700); border-radius: var(--radius-md); box-shadow: 0 18px 40px rgba(21,85,182,.2); }
.contact-link span { grid-column: 1; font-size: 11px; opacity: .75; }
.contact-link strong { grid-column: 1; margin-top: 2px; font-size: 17px; }
.contact-link small { grid-column: 2; grid-row: 1 / 3; align-self: center; font-size: 22px; }

.site-footer { color: #fff; background: #050f22; }
.footer-main { display: flex; justify-content: space-between; gap: 60px; padding-block: 64px 46px; }
.footer-logo-link { display: inline-flex; align-items: center; }
.footer-logo { display: block; width: auto; height: 28px; }
.footer-brand p { margin: 8px 0 0; color: #8999af; font-size: 12px; }
.footer-brand > .footer-email { display: inline-block; margin-top: 14px; color: #b4c0d0; font-size: 12px; font-weight: 600; letter-spacing: 0; }
.footer-brand > .footer-email:hover { color: #fff; }
.footer-main nav { display: flex; flex-wrap: wrap; align-content: flex-start; gap: 16px 30px; padding-top: 8px; }
.footer-main nav a { color: #b4c0d0; font-size: 13px; }
.footer-main nav a:hover { color: #fff; }
.footer-legal { display: grid; grid-template-columns: 1fr auto auto; gap: 28px; padding-block: 22px 30px; color: #718197; border-top: 1px solid rgba(255,255,255,.1); font-size: 11px; }
.footer-legal p { margin: 0; }
.footer-legal a:hover { color: #fff; }

.notfound { min-height: 600px; display: grid; place-items: center; background: linear-gradient(145deg, #fff, #eef4ff); }
.notfound-inner { max-width: 720px; padding-block: 100px; text-align: center; }
.error-code { margin: 0 0 -20px; color: rgba(21,85,182,.08); font-size: clamp(120px, 20vw, 220px); font-weight: 900; line-height: .8; letter-spacing: -.08em; }
.notfound .eyebrow { justify-content: center; margin-top: 0; }
.notfound h1 { margin: 0; color: var(--navy-950); font-size: clamp(32px, 5vw, 52px); line-height: 1.25; }
.notfound h1 + p { max-width: 520px; margin: 20px auto 30px; color: var(--muted); }

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 54px; padding-block: 76px; }
  .scope-panel { max-width: 680px; }
  .category-grid, .service-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { gap: 56px; }
  .contact-panel { grid-template-columns: 1fr; }
  .contact-link { min-width: 0; }
  .footer-legal { grid-template-columns: 1fr 1fr; }
  .footer-legal a { grid-column: 1 / -1; }
}
@media (max-width: 760px) {
  .container { width: min(100% - 32px, 1180px); }
  .header-inner { min-height: 66px; }
  .brand-logo { height: 27px; }
  .desktop-nav { display: none; }
  .mobile-menu { display: block; }
  .mobile-menu summary { padding: 8px 12px; color: var(--navy-900); border: 1px solid var(--line); border-radius: 999px; cursor: pointer; font-size: 13px; font-weight: 700; list-style: none; }
  .mobile-menu summary::-webkit-details-marker { display: none; }
  .mobile-menu nav { position: absolute; top: 50px; right: 0; display: grid; min-width: 210px; padding: 12px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm); box-shadow: var(--shadow); }
  .mobile-menu nav a { padding: 10px 12px; border-radius: 8px; font-size: 14px; }
  .mobile-menu nav a:hover { background: var(--blue-50); color: var(--blue-700); }
  .hero-grid { min-height: auto; padding-block: 64px; }
  .hero h1 { font-size: clamp(38px, 11vw, 52px); }
  .hero-intro { font-size: 15px; }
  .scope-panel { padding: 24px 20px; border-radius: var(--radius-md); }
  .section { padding-block: 78px; }
  .section-heading { grid-template-columns: 1fr; gap: 18px; margin-bottom: 36px; }
  .section-heading > p { max-width: 560px; }
  .about-grid { grid-template-columns: 1fr; gap: 18px; }
  .about-copy > p { margin-top: 10px; font-size: 15px; }
  .contact-panel { padding: 34px 26px; border-radius: var(--radius-md); }
  .footer-main { flex-direction: column; gap: 32px; }
  .footer-main nav { display: grid; grid-template-columns: 1fr 1fr; }
  .footer-legal { grid-template-columns: 1fr; gap: 10px; }
  .footer-legal a { grid-column: auto; }
}
@media (max-width: 520px) {
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .hero-tags { gap: 8px 16px; }
  .scope-head { align-items: flex-start; gap: 12px; }
  .scope-head span { max-width: 120px; text-align: right; }
  .category-grid, .service-grid { grid-template-columns: 1fr; }
  .category-card, .service-card { min-height: auto; }
  .category-card > span { margin-bottom: 30px; }
  .service-card h3 { margin-top: 46px; }
  .contact-link { padding: 18px; }
  .footer-main nav { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}