:root {
  --navy-950: #071629;
  --navy-900: #0b1f3a;
  --navy-800: #112b4e;
  --blue-600: #315f9a;
  --blue-400: #7598c1;
  --ice: #dce8f2;
  --paper: #f7f8f6;
  --white: #ffffff;
  --ink: #142238;
  --muted: #5e6a79;
  --line: #d9dee3;
  --warm: #b8a17a;
  --shadow: 0 24px 70px rgba(5, 21, 40, .14);
  --radius: 4px;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "DM Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
svg { display: block; }
.container { width: min(calc(100% - 48px), var(--container)); margin-inline: auto; }
.section { padding: 120px 0; }
.skip-link {
  position: fixed; left: 20px; top: -60px; z-index: 1000;
  padding: 10px 16px; background: white; color: var(--navy-900);
  transition: top .2s;
}
.skip-link:focus { top: 16px; }

.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  color: white; transition: background .25s, box-shadow .25s;
}
.site-header.scrolled { background: rgba(7, 22, 41, .96); box-shadow: 0 8px 30px rgba(0,0,0,.12); backdrop-filter: blur(14px); }
.header-inner { height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-family: "Manrope", sans-serif; letter-spacing: -.3px; }
.brand-name { display: grid; gap: 3px; line-height: 1; white-space: nowrap; }
.brand-name strong { font-size: 18px; }
.brand-name small { color: rgba(255,255,255,.58); font-size: 8px; font-weight: 600; letter-spacing: .09em; text-transform: uppercase; }
.brand-icon-crop {
  position: relative; display: block; width: 40px; height: 40px; flex: 0 0 40px;
  overflow: hidden; background: #f2f5f7; border: 1px solid rgba(255,255,255,.55); border-radius: 3px;
}
.brand-icon-crop img { position: absolute; width: 96px; max-width: none; height: 96px; left: -28px; top: -15px; object-fit: contain; }
.desktop-nav { display: flex; align-items: center; gap: clamp(20px, 2.5vw, 36px); margin-left: auto; }
.desktop-nav a { position: relative; color: rgba(255,255,255,.78); font-size: 14px; font-weight: 500; }
.desktop-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -7px; height: 1px; background: var(--warm); transition: right .25s; }
.desktop-nav a:hover { color: white; }
.desktop-nav a:hover::after { right: 0; }
.header-actions { display: flex; align-items: center; gap: 16px; }
.language-toggle { display: flex; align-items: center; gap: 7px; border: 0; background: transparent; color: white; padding: 8px 0; font-size: 12px; }
.lang-option { opacity: .45; transition: opacity .2s; }
.lang-option.active { opacity: 1; font-weight: 700; }
.toggle-divider { width: 1px; height: 14px; background: rgba(255,255,255,.35); }
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 14px;
  min-height: 52px; padding: 0 24px; border: 1px solid transparent;
  font-weight: 600; font-size: 14px; letter-spacing: .01em; border-radius: var(--radius);
  transition: transform .2s, background .2s, color .2s, border-color .2s;
}
.button:hover { transform: translateY(-2px); }
.button-small { min-height: 42px; padding: 0 18px; }
.button-primary { background: var(--navy-900); color: white; }
.header-cta { background: white; color: var(--navy-900); }
.header-cta:hover { background: var(--ice); }
.menu-toggle { display: none; width: 42px; height: 42px; border: 0; background: transparent; padding: 10px; }
.menu-toggle span { display: block; height: 1px; background: white; margin: 7px 0; transition: transform .2s; }
.menu-toggle.open span:first-child { transform: translateY(4px) rotate(45deg); }
.menu-toggle.open span:last-child { transform: translateY(-4px) rotate(-45deg); }
.mobile-menu { display: none; }

.hero {
  min-height: 760px; position: relative; overflow: hidden; background: var(--navy-900); color: white;
  display: flex; align-items: center; padding: 160px 0 90px;
}
.hero::before { content: ""; position: absolute; width: 600px; height: 600px; border: 1px solid rgba(255,255,255,.06); border-radius: 50%; right: -130px; top: 30px; }
.hero-grid { position: absolute; inset: 0; opacity: .07; background-image: linear-gradient(rgba(255,255,255,.5) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.5) 1px, transparent 1px); background-size: 80px 80px; mask-image: linear-gradient(to right, transparent 5%, black 70%); }
.hero-layout { position: relative; display: grid; grid-template-columns: 1.18fr .82fr; gap: 80px; align-items: center; }
.eyebrow { display: flex; align-items: center; gap: 10px; color: var(--blue-600); font-size: 12px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 24px; }
.eyebrow::before { content: ""; width: 28px; height: 1px; background: currentColor; }
.eyebrow.light { color: var(--blue-400); }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-family: "Manrope", "PingFang SC", sans-serif; }
h1 { max-width: 760px; margin-bottom: 28px; font-size: clamp(48px, 5vw, 74px); line-height: 1.08; letter-spacing: -.045em; }
h2 { margin-bottom: 0; font-size: clamp(34px, 4vw, 54px); line-height: 1.16; letter-spacing: -.04em; }
h3 { line-height: 1.3; letter-spacing: -.02em; }
.hero-lead { max-width: 700px; margin-bottom: 34px; color: rgba(255,255,255,.72); font-size: 18px; line-height: 1.7; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.button-light { background: white; color: var(--navy-900); }
.button-light:hover { background: var(--ice); }
.button-secondary-light { border-color: rgba(255,255,255,.35); color: white; }
.button-secondary-light:hover { border-color: white; background: rgba(255,255,255,.06); }
.hero-trust { display: flex; flex-wrap: wrap; gap: 12px 28px; margin-top: 38px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.58); font-size: 12px; }
.hero-trust > span { display: flex; align-items: center; gap: 8px; }
.hero-trust i { width: 5px; height: 5px; background: var(--warm); border-radius: 50%; }
.hero-visual { position: relative; display: flex; justify-content: flex-end; }
.north-card { position: relative; width: 395px; min-height: 495px; padding: 26px; background: #f1f4f5; color: var(--navy-900); box-shadow: var(--shadow); transform: rotate(2deg); }
.north-card::before { content: ""; position: absolute; inset: 12px; border: 1px solid #c8d1d8; pointer-events: none; }
.north-card-top { display: flex; justify-content: space-between; padding: 0 4px 18px; border-bottom: 1px solid #c8d1d8; color: #607184; font: 600 10px/1 "Manrope"; letter-spacing: .16em; }
.north-compass { position: relative; width: 250px; margin: 42px auto; }
.north-compass svg { width: 100%; fill: none; stroke: #183b61; stroke-width: 1; }
.north-compass .compass-fill { fill: #183b61; }
.compass-n { position: absolute; left: 50%; top: -26px; transform: translateX(-50%); font: 700 12px "Manrope"; letter-spacing: .2em; }
.metric-row { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid #c8d1d8; }
.metric-row div { padding: 22px 8px 10px; border-right: 1px solid #c8d1d8; text-align: center; }
.metric-row div:last-child { border-right: 0; }
.metric-row span { display: block; color: #657586; font-size: 11px; }
.floating-note { position: absolute; right: -25px; bottom: 35px; display: flex; align-items: center; gap: 10px; padding: 14px 18px; background: var(--navy-950); color: white; box-shadow: var(--shadow); font-size: 12px; font-weight: 600; }
.floating-note svg { width: 19px; height: 19px; fill: none; stroke: var(--warm); stroke-width: 2; }

.value-strip { position: relative; background: white; border-bottom: 1px solid var(--line); }
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.value-grid > div { padding: 28px 26px; border-right: 1px solid var(--line); }
.value-grid > div:first-child { border-left: 1px solid var(--line); }
.value-grid strong, .value-grid span { display: block; }
.value-grid strong { font: 700 14px "Manrope"; }
.value-grid span { color: var(--muted); font-size: 12px; }

.split-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 110px; align-items: start; }
.about { background: var(--paper); }
.about-copy { padding-top: 8px; }
.about-copy .lead { color: var(--navy-900); font: 600 23px/1.5 "Manrope"; }
.about-copy > p:not(.lead) { color: var(--muted); }
.principle { margin-top: 42px; padding-top: 28px; border-top: 1px solid var(--line); }
.principle strong { display: block; margin-bottom: 6px; font-family: "Manrope"; }
.principle p { margin: 0; color: var(--muted); font-size: 14px; }

.services { background: white; }
.section-intro { display: grid; grid-template-columns: 1.5fr .5fr; gap: 80px; align-items: end; margin-bottom: 58px; }
.section-intro > p { margin-bottom: 6px; color: var(--muted); }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.service-card { position: relative; min-height: 365px; padding: 40px 34px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); overflow: hidden; transition: background .25s, color .25s; }
.service-card::after { content: ""; position: absolute; width: 150px; height: 150px; border: 1px solid currentColor; opacity: .05; border-radius: 50%; right: -75px; bottom: -75px; }
.service-card:hover { background: var(--navy-900); color: white; }
.service-icon { width: 36px; height: 36px; margin: 22px 0 44px; fill: none; stroke: var(--blue-600); stroke-width: 1.4; }
.service-card:hover .service-icon { stroke: var(--warm); }
.service-card h3 { font-size: 21px; margin-bottom: 14px; }
.service-card p { color: var(--muted); font-size: 14px; }
.service-card:hover p { color: rgba(255,255,255,.68); }
.service-card-accent { background: #eef3f6; }

.process { position: relative; overflow: hidden; background: var(--navy-950); color: white; }
.process::before { content: "N"; position: absolute; right: -30px; top: -190px; color: rgba(255,255,255,.025); font: 700 700px/1 "Manrope"; }
.process-header { max-width: 680px; margin-bottom: 62px; }
.process-header p { margin: 24px 0 0; color: rgba(255,255,255,.58); }
.process-list { position: relative; z-index: 1; list-style: none; margin: 0; padding: 0; border-top: 1px solid rgba(255,255,255,.16); }
.process-list li { padding: 31px 0; border-bottom: 1px solid rgba(255,255,255,.16); }
.process-list h3 { margin-bottom: 6px; font-size: 21px; }
.process-list p { max-width: 650px; margin: 0; color: rgba(255,255,255,.58); font-size: 14px; }

.why-us { background: var(--paper); }
.why-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 110px; align-items: start; }
.why-sticky { position: sticky; top: 120px; }
.why-sticky > p { color: var(--muted); margin: 24px 0 36px; }
.software { padding: 24px; background: white; border-left: 2px solid var(--warm); box-shadow: 0 12px 40px rgba(8,28,49,.06); }
.software span, .software strong, .software small { display: block; }
.software span { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .1em; }
.software strong { margin: 9px 0; font: 600 14px/1.5 "Manrope"; }
.software small { color: var(--muted); font-size: 11px; }
.benefit { padding: 0 0 34px; margin-bottom: 34px; border-bottom: 1px solid var(--line); }
.benefit h3 { margin-bottom: 10px; font-size: 21px; }
.benefit p { margin: 0; color: var(--muted); font-size: 14px; }

.pricing-note { padding-top: 0; padding-bottom: 0; background: var(--paper); }
.pricing-box { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; align-items: center; padding: 68px 72px; background: var(--blue-600); color: white; }
.pricing-box h2 { font-size: clamp(30px, 3vw, 44px); }
.pricing-box p { color: rgba(255,255,255,.75); }
.text-link { display: inline-flex; align-items: center; gap: 14px; font-weight: 600; border-bottom: 1px solid currentColor; padding-bottom: 4px; }
.light-link { color: white; }

.faq { background: var(--paper); }
.faq-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 110px; }
.faq-heading { position: sticky; top: 120px; align-self: start; }
.accordion { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item button { width: 100%; min-height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border: 0; background: transparent; color: var(--ink); text-align: left; font: 600 17px/1.4 "Manrope"; padding: 20px 4px; }
.faq-item button i { position: relative; width: 18px; height: 18px; flex: 0 0 auto; }
.faq-item button i::before, .faq-item button i::after { content: ""; position: absolute; left: 0; top: 8px; width: 18px; height: 1px; background: var(--ink); transition: transform .25s; }
.faq-item button i::after { transform: rotate(90deg); }
.faq-item.open button i::after { transform: rotate(0); }
.faq-answer { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .3s ease; }
.faq-answer p { overflow: hidden; margin: 0; color: var(--muted); font-size: 14px; }
.faq-item.open .faq-answer { grid-template-rows: 1fr; }
.faq-item.open .faq-answer p { padding: 0 45px 26px 4px; }

.contact { background: var(--navy-900); color: white; }
.contact-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 110px; }
.contact-copy > p { margin: 25px 0; color: rgba(255,255,255,.64); }
.contact-email { display: inline-block; color: white; border-bottom: 1px solid rgba(255,255,255,.5); }
.contact-detail { display: grid; gap: 3px; margin-top: 44px; color: rgba(255,255,255,.46); font-size: 12px; }
.contact-form { padding: 42px; background: white; color: var(--ink); box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.contact-form label { display: block; margin-bottom: 20px; color: #4f5d6c; font-size: 12px; font-weight: 600; }
.contact-form label > span { display: block; margin-bottom: 7px; }
.contact-form input, .contact-form textarea { width: 100%; border: 1px solid #d7dce1; border-radius: 2px; background: #fbfcfc; color: var(--ink); padding: 12px 13px; outline: 0; transition: border .2s, box-shadow .2s; }
.contact-form input { height: 48px; }
.contact-form textarea { resize: vertical; min-height: 132px; }
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--blue-600); box-shadow: 0 0 0 3px rgba(49,95,154,.1); }
.button-submit { width: 100%; border: 0; }
.button-submit:disabled { cursor: wait; opacity: .72; }
.form-note { margin: 12px 0 0; color: var(--muted); font-size: 11px; text-align: center; }
.form-status { margin: 18px 0 0; padding: 13px 15px; border-radius: 2px; font-size: 12px; line-height: 1.55; }
.form-status.success { background: #edf7f1; color: #1f6841; border: 1px solid #bedfca; }
.form-status.error { background: #fff1f0; color: #9a302b; border: 1px solid #efc4c1; }

.site-footer { background: var(--navy-950); color: white; padding: 60px 0 24px; border-top: 1px solid rgba(255,255,255,.08); }
.footer-main { display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: center; padding-bottom: 50px; }
.footer-main p { margin: 0; color: rgba(255,255,255,.52); font-size: 12px; text-align: center; }
.footer-email { color: rgba(255,255,255,.72); font-size: 12px; text-align: right; }
.footer-bottom { display: flex; justify-content: space-between; gap: 30px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.35); font-size: 10px; }

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

@media (max-width: 1050px) {
  .desktop-nav { display: none; }
  .menu-toggle { display: block; }
  .mobile-menu {
    position: fixed; inset: 84px 0 auto; display: grid; background: var(--navy-950);
    padding: 10px 24px 26px; transform: translateY(-130%); opacity: 0; pointer-events: none;
    transition: transform .25s, opacity .25s;
  }
  .mobile-menu.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .mobile-menu a { padding: 15px 0; border-bottom: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.82); }
  .hero-layout { grid-template-columns: 1fr .65fr; gap: 35px; }
  .north-card { width: 330px; min-height: 440px; }
  .north-compass { width: 210px; }
  .floating-note { right: -5px; }
  .split-layout, .why-layout, .faq-layout, .contact-layout { gap: 60px; }
}

@media (max-width: 820px) {
  .section { padding: 86px 0; }
  .hero { min-height: auto; padding-top: 145px; }
  .hero-layout { grid-template-columns: 1fr; }
  .hero-copy { max-width: 700px; }
  .hero-visual { display: none; }
  .value-grid { grid-template-columns: 1fr 1fr; }
  .value-grid > div:nth-child(3) { border-left: 1px solid var(--line); border-top: 1px solid var(--line); }
  .value-grid > div:nth-child(4) { border-top: 1px solid var(--line); }
  .split-layout, .why-layout, .faq-layout, .contact-layout { grid-template-columns: 1fr; gap: 48px; }
  .why-sticky, .faq-heading { position: static; }
  .section-intro { grid-template-columns: 1fr; gap: 20px; }
  .section-intro > p { max-width: 580px; }
  .service-grid { grid-template-columns: 1fr 1fr; }
  .pricing-box { grid-template-columns: 1fr; gap: 30px; padding: 52px 42px; }
  .contact-copy { max-width: 600px; }
}

@media (max-width: 560px) {
  .container { width: min(calc(100% - 32px), var(--container)); }
  .header-inner { height: 72px; }
  .mobile-menu { inset: 72px 0 auto; }
  .header-cta { display: none; }
  .header-actions { gap: 10px; }
  .brand-name strong { font-size: 16px; }
  .brand-name small { font-size: 7px; }
  .brand-mark { width: 30px; height: 30px; }
  .hero { padding: 125px 0 70px; }
  h1 { font-size: 43px; }
  h2 { font-size: 34px; }
  .hero-lead { font-size: 16px; }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .hero-trust { display: grid; }
  .value-grid { grid-template-columns: 1fr; }
  .value-grid > div { border-left: 1px solid var(--line); border-top: 1px solid var(--line); }
  .value-grid > div:first-child { border-top: 0; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 320px; }
  .pricing-box { width: 100%; padding: 42px 24px; }
  .faq-item button { font-size: 15px; }
  .contact-form { padding: 28px 20px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .footer-main { grid-template-columns: 1fr; gap: 24px; justify-items: start; }
  .footer-main p, .footer-email { text-align: left; }
  .footer-bottom { flex-direction: column; gap: 10px; }
}

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