:root {
  --navy-950: #06182d;
  --navy-900: #082746;
  --navy-800: #0b3b73;
  --blue-700: #1263b5;
  --blue-500: #1797e8;
  --cyan-400: #38bdf8;
  --ink: #10243b;
  --muted: #60738a;
  --line: #dce7f1;
  --surface: #f4f8fc;
  --white: #ffffff;
  --shadow: 0 24px 70px rgba(7, 42, 79, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { color: inherit; }
svg { display: block; }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 999; left: 12px; top: -80px; padding: 10px 16px; background: #fff; border-radius: 8px; box-shadow: var(--shadow); }
.skip-link:focus { top: 12px; }

.site-header {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  height: 76px;
  background: rgba(255,255,255,.9);
  border-bottom: 1px solid rgba(213,225,237,.8);
  backdrop-filter: blur(18px);
}
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand-mark { width: 40px; height: 40px; color: var(--blue-700); }
.brand-text { display: grid; line-height: 1.15; }
.brand-text strong { font-size: 17px; letter-spacing: .04em; }
.brand-text small { margin-top: 5px; color: #6f8296; font-size: 9px; letter-spacing: .12em; }
.site-nav { display: flex; align-items: center; gap: 36px; }
.site-nav a { position: relative; color: #344a61; font-size: 15px; font-weight: 600; }
.site-nav a::after { content: ""; position: absolute; left: 50%; right: 50%; bottom: -10px; height: 2px; background: var(--blue-500); transition: .25s ease; }
.site-nav a:hover::after, .site-nav a.active::after { left: 0; right: 0; }
.menu-toggle { display: none; width: 42px; height: 42px; padding: 9px; border: 0; background: transparent; }
.menu-toggle span { display: block; height: 2px; margin: 5px 0; background: var(--ink); transition: .25s ease; }

.hero {
  position: relative;
  min-height: 760px;
  padding: 155px 0 88px;
  overflow: hidden;
  background: linear-gradient(135deg, #f8fbff 0%, #eef7ff 52%, #f7fbff 100%);
}
.hero-bg::before, .hero-bg::after { content: ""; position: absolute; border-radius: 999px; filter: blur(1px); }
.hero-bg::before { width: 720px; height: 720px; right: -330px; top: -200px; background: radial-gradient(circle, rgba(23,151,232,.18), rgba(23,151,232,0) 68%); }
.hero-bg::after { width: 460px; height: 460px; left: -250px; bottom: -170px; background: radial-gradient(circle, rgba(11,59,115,.10), rgba(11,59,115,0) 70%); }
.hero-grid { position: relative; display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 72px; }
.eyebrow { margin: 0 0 15px; color: var(--blue-700); font-size: 13px; font-weight: 800; letter-spacing: .14em; }
.hero h1 { margin: 0; font-size: clamp(44px, 5.2vw, 70px); line-height: 1.16; letter-spacing: -.04em; color: var(--navy-950); }
.hero h1 span { color: var(--blue-700); }
.hero-description { max-width: 680px; margin: 26px 0 0; color: var(--muted); font-size: 18px; line-height: 1.95; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.button { display: inline-flex; min-height: 48px; padding: 0 25px; align-items: center; justify-content: center; border: 1px solid transparent; border-radius: 12px; font-weight: 700; cursor: pointer; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: linear-gradient(135deg, var(--navy-800), var(--blue-500)); box-shadow: 0 13px 28px rgba(18,99,181,.23); }
.button-ghost { color: var(--navy-800); border-color: #c6d8e8; background: rgba(255,255,255,.75); }
.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 42px 0 0; }
.hero-stats div { border-left: 2px solid #c9ddec; padding-left: 15px; }
.hero-stats dt { font-weight: 800; color: #1e3a56; }
.hero-stats dd { margin: 2px 0 0; color: #75879a; font-size: 13px; }

.hero-visual { position: relative; min-height: 470px; display: flex; align-items: center; }
.visual-window { position: relative; width: 100%; border: 1px solid rgba(192,215,234,.9); border-radius: 23px; overflow: hidden; background: rgba(255,255,255,.9); box-shadow: 0 35px 100px rgba(7,44,82,.18); transform: perspective(1200px) rotateY(-5deg) rotateX(2deg); }
.visual-toolbar { height: 42px; display: flex; align-items: center; gap: 6px; padding: 0 15px; background: #f3f7fb; border-bottom: 1px solid #e3edf5; }
.visual-toolbar span { width: 9px; height: 9px; border-radius: 50%; background: #bfd0df; }
.visual-content { min-height: 350px; display: grid; grid-template-columns: 60px 1fr; }
.visual-sidebar { padding: 20px 14px; background: var(--navy-900); }
.visual-sidebar i { display: block; height: 30px; margin-bottom: 14px; border-radius: 8px; background: rgba(255,255,255,.1); }
.visual-sidebar i:first-child { background: linear-gradient(135deg, var(--blue-500), var(--cyan-400)); }
.visual-dashboard { padding: 27px; }
.visual-title { width: 42%; height: 17px; border-radius: 8px; background: #d9e6f0; }
.visual-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 13px; margin-top: 25px; }
.visual-cards i { height: 75px; border-radius: 13px; background: linear-gradient(145deg, #f1f7fb, #e3eff8); border: 1px solid #deebf4; }
.visual-chart { height: 185px; margin-top: 25px; border-radius: 14px; overflow: hidden; padding: 20px 15px 0; background: repeating-linear-gradient(to bottom, #f7fbfe 0, #f7fbfe 37px, #e6eef5 38px); }
.visual-chart svg { width: 100%; height: 100%; }
.floating-card { position: absolute; display: grid; min-width: 185px; padding: 15px 18px; border-radius: 14px; border: 1px solid rgba(202,220,235,.9); background: rgba(255,255,255,.94); box-shadow: 0 16px 44px rgba(9,48,84,.14); }
.floating-card b { color: var(--navy-800); }
.floating-card span { color: var(--muted); font-size: 12px; }
.card-security { top: 32px; right: -28px; }
.card-service { left: -30px; bottom: 17px; }

.section { padding: 105px 0; }
.section-heading { max-width: 670px; margin: 0 auto 50px; text-align: center; }
.section-heading h2, .advantages-copy h2, .about-copy h2, .contact-copy h2 { margin: 0; font-size: clamp(32px, 4vw, 46px); line-height: 1.25; letter-spacing: -.03em; color: var(--navy-950); }
.section-heading > p:last-child, .advantages-copy > p, .contact-copy > p { margin: 18px 0 0; color: var(--muted); }
.services { background: #fff; }
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.service-card { position: relative; min-height: 315px; padding: 31px 27px; border: 1px solid var(--line); border-radius: var(--radius-md); background: #fff; overflow: hidden; transition: .28s ease; }
.service-card::before { content: ""; position: absolute; inset: auto 0 0; height: 4px; background: linear-gradient(90deg, var(--navy-800), var(--cyan-400)); transform: scaleX(0); transform-origin: left; transition: .28s ease; }
.service-card:hover { transform: translateY(-7px); border-color: #c4daeb; box-shadow: var(--shadow); }
.service-card:hover::before { transform: scaleX(1); }
.service-icon { width: 54px; height: 54px; display: grid; place-items: center; border-radius: 14px; color: var(--blue-700); background: #ebf6fd; }
.service-icon svg { width: 28px; height: 28px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.service-card h3 { margin: 25px 0 12px; font-size: 21px; }
.service-card p { margin: 0; color: var(--muted); font-size: 15px; }
.service-card > span { display: block; margin-top: 22px; padding-top: 18px; border-top: 1px solid #edf2f6; color: #7790a8; font-size: 12px; }

.advantages { background: linear-gradient(135deg, var(--navy-950), var(--navy-800)); color: #fff; }
.advantages-grid { display: grid; grid-template-columns: 1fr .82fr; gap: 90px; align-items: center; }
.advantages .eyebrow { color: #69ccff; }
.advantages-copy h2 { color: #fff; }
.advantages-copy > p { color: #b9cbda; }
.advantage-list { display: grid; gap: 17px; margin-top: 34px; }
.advantage-list > div { display: flex; align-items: center; gap: 18px; padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,.11); }
.advantage-list b { font-size: 13px; color: #67cfff; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.advantage-list span { display: grid; }
.advantage-list strong { font-size: 17px; }
.advantage-list small { margin-top: 3px; color: #a9bece; }
.process-panel { padding: 31px; border: 1px solid rgba(255,255,255,.16); border-radius: var(--radius-lg); background: rgba(255,255,255,.07); backdrop-filter: blur(12px); }
.process-head { display: flex; justify-content: space-between; align-items: baseline; padding-bottom: 20px; border-bottom: 1px solid rgba(255,255,255,.13); }
.process-head span { font-size: 20px; font-weight: 800; }
.process-head small { color: #83a7c2; font-size: 10px; letter-spacing: .12em; }
.process-list { list-style: none; display: grid; gap: 0; margin: 14px 0 0; padding: 0; }
.process-list li { position: relative; display: flex; gap: 17px; padding: 14px 0; }
.process-list li:not(:last-child)::after { content: ""; position: absolute; left: 17px; top: 48px; bottom: -5px; width: 1px; background: rgba(107,206,255,.25); }
.process-list i { position: relative; z-index: 1; flex: 0 0 35px; height: 35px; display: grid; place-items: center; border: 1px solid rgba(105,204,255,.5); border-radius: 50%; color: #75d2ff; background: #103d65; font-style: normal; font-size: 13px; }
.process-list div { display: grid; }
.process-list span { color: #a9bece; font-size: 13px; }

.projects { background: #f6fafd; }
.project-card { display: grid; grid-template-columns: 1fr 360px; gap: 36px; padding: 38px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow); }
.project-main { display: grid; align-content: center; }
.project-label { width: fit-content; margin: 0 0 16px; padding: 6px 12px; border-radius: 999px; color: var(--blue-700); background: #eaf6fd; font-size: 13px; font-weight: 800; }
.project-main h3 { margin: 0; color: var(--navy-950); font-size: clamp(27px, 3vw, 38px); line-height: 1.3; }
.project-main p { margin: 18px 0 0; color: var(--muted); }
.project-aside { display: grid; gap: 1px; overflow: hidden; border-radius: 15px; background: #d8e6f1; }
.project-aside div { display: grid; gap: 4px; padding: 19px 21px; background: #f7fbfe; }
.project-aside span { color: #70859a; font-size: 12px; }
.project-aside b { color: var(--ink); font-size: 15px; }
.project-aside a { display: flex; min-height: 50px; align-items: center; justify-content: center; color: #fff; background: var(--navy-800); font-weight: 800; transition: background .2s ease; }
.project-aside a + a { background: var(--blue-700); }
.project-aside a:hover { background: var(--blue-500); }
.project-highlights { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 24px; }
.project-highlights div { min-height: 125px; padding: 24px; border: 1px solid var(--line); border-radius: var(--radius-md); background: #fff; }
.project-highlights b { display: block; color: var(--navy-800); font-size: 17px; }
.project-highlights span { display: block; margin-top: 8px; color: var(--muted); font-size: 14px; }

.about-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; align-items: center; }
.about-visual { position: relative; min-height: 450px; border-radius: var(--radius-lg); overflow: hidden; background: linear-gradient(145deg, #eaf5fc, #f7fbfe); }
.about-shape { position: absolute; border-radius: 50%; }
.shape-one { width: 340px; height: 340px; right: -70px; top: -80px; border: 70px solid rgba(23,151,232,.11); }
.shape-two { width: 230px; height: 230px; left: -40px; bottom: -70px; background: rgba(11,59,115,.08); }
.about-code { position: absolute; inset: 85px 35px auto; padding: 28px 20px; border: 1px solid rgba(186,211,230,.9); border-radius: 18px; background: rgba(255,255,255,.78); box-shadow: 0 25px 60px rgba(7,42,79,.1); backdrop-filter: blur(10px); }
.about-code div { display: flex; gap: 14px; padding: 11px 8px; border-bottom: 1px solid #e8f0f6; }
.about-code div:last-child { border: 0; }
.about-code span { color: #a2b2c1; font: 12px ui-monospace, SFMono-Regular, Menlo, monospace; }
.about-code code { color: var(--navy-800); font-size: clamp(11px, 1.1vw, 14px); }
.about-copy > p { margin: 20px 0 0; color: var(--muted); }
.about-copy strong { color: var(--ink); }
.business-scope { margin-top: 28px; padding: 23px 25px; border-left: 4px solid var(--blue-500); border-radius: 0 13px 13px 0; background: var(--surface); }
.business-scope b { color: var(--navy-800); }
.business-scope p { margin: 7px 0 0; color: #597087; font-size: 14px; }

.contact { padding-top: 50px; background: #f5f9fc; }
.contact-panel { padding: 55px 60px; border-radius: var(--radius-lg); color: #fff; background: linear-gradient(128deg, var(--navy-950), var(--navy-800)); box-shadow: var(--shadow); }
.contact-copy { text-align: center; }
.contact-copy h2 { color: #fff; }
.contact-copy p { color: #b8cbdb; }
.contact .eyebrow { color: #65cbff; }
.contact-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 1px; margin-top: 38px; overflow: hidden; border-radius: 15px; background: rgba(255,255,255,.12); }
.contact-item { min-height: 115px; display: grid; align-content: center; padding: 22px 28px; background: rgba(255,255,255,.06); }
.contact-item span { color: #8fb0c9; font-size: 12px; }
.contact-item a, .contact-item p { margin: 4px 0 0; font-weight: 700; }
.contact-item a:hover { color: #71d4ff; }

.site-footer { color: #9cb1c3; background: #051426; }
.footer-main { min-height: 135px; display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.footer-brand strong { color: #fff; font-size: 18px; }
.footer-brand p { margin: 4px 0 0; font-size: 13px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 27px; font-size: 13px; }
.footer-links button { padding: 0; border: 0; color: inherit; background: none; cursor: pointer; }
.footer-links a:hover, .footer-links button:hover, .filing-links a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); }
.footer-bottom-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 25px; font-size: 12px; }
.filing-links { display: flex; flex-wrap: wrap; gap: 20px; }

.privacy-dialog { width: min(600px, calc(100% - 30px)); padding: 0; border: 0; border-radius: 18px; color: var(--ink); box-shadow: 0 35px 100px rgba(4,25,48,.35); }
.privacy-dialog::backdrop { background: rgba(2,16,31,.65); backdrop-filter: blur(5px); }
.privacy-dialog form { padding: 0; }
.dialog-head { display: flex; align-items: center; justify-content: space-between; padding: 22px 26px; border-bottom: 1px solid var(--line); }
.dialog-head h2 { margin: 0; font-size: 22px; }
.dialog-head button { width: 35px; height: 35px; border: 0; border-radius: 50%; background: var(--surface); font-size: 24px; cursor: pointer; }
.dialog-body { padding: 23px 26px 10px; color: var(--muted); }
.dialog-body p { margin: 0 0 14px; }
.dialog-actions { padding: 0 26px 25px; text-align: right; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 1000px) {
  .hero { padding-top: 125px; }
  .hero-grid, .advantages-grid, .about-grid { grid-template-columns: 1fr; gap: 55px; }
  .hero-copy { max-width: 760px; }
  .hero-visual { max-width: 720px; width: 100%; margin: 0 auto; }
  .service-grid { grid-template-columns: repeat(2,1fr); }
  .project-card { grid-template-columns: 1fr; }
  .project-highlights { grid-template-columns: 1fr; }
  .about-visual { order: 2; }
}

@media (max-width: 760px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .site-header { height: 68px; }
  .brand-mark { width: 35px; height: 35px; }
  .brand-text small { display: none; }
  .menu-toggle { display: block; position: relative; z-index: 2; }
  .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .site-nav { position: fixed; inset: 68px 0 auto; display: grid; gap: 0; padding: 10px 20px 24px; background: rgba(255,255,255,.98); box-shadow: 0 25px 50px rgba(5,30,58,.12); transform: translateY(-130%); transition: .3s ease; }
  .site-nav.open { transform: translateY(0); }
  .site-nav a { padding: 15px 5px; border-bottom: 1px solid #edf2f6; }
  .site-nav a::after { display: none; }
  .hero { min-height: auto; padding: 118px 0 75px; }
  .hero h1 { font-size: 41px; }
  .hero-description { font-size: 16px; }
  .hero-stats { grid-template-columns: 1fr; }
  .hero-stats div { padding: 4px 0 4px 14px; }
  .hero-visual { min-height: 350px; }
  .visual-window { transform: none; }
  .visual-content { min-height: 285px; grid-template-columns: 45px 1fr; }
  .visual-dashboard { padding: 18px; }
  .visual-chart { height: 145px; }
  .floating-card { min-width: 155px; padding: 11px 14px; }
  .card-security { right: -5px; top: -15px; }
  .card-service { left: -5px; bottom: -10px; }
  .section { padding: 76px 0; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 0; }
  .project-card { padding: 24px 18px; border-radius: 18px; }
  .project-aside div { padding: 17px 18px; }
  .project-highlights div { min-height: 0; padding: 20px; }
  .advantages-grid, .about-grid { gap: 42px; }
  .process-panel { padding: 23px 20px; }
  .about-visual { min-height: 340px; }
  .about-code { inset: 58px 17px auto; padding: 17px 10px; }
  .contact { padding-top: 30px; }
  .contact-panel { padding: 40px 20px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-main, .footer-bottom-inner { align-items: flex-start; flex-direction: column; justify-content: center; padding: 27px 0; }
  .footer-main { min-height: 0; }
  .footer-bottom-inner { min-height: 0; }
}

@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; }
}