:root {
  --ink: #14302e;
  --muted: #617472;
  --deep: #063b37;
  --deep-2: #032d2a;
  --mint: #27c9bd;
  --mint-light: #9ff4e8;
  --coral: #ff4868;
  --cream: #f7f4ec;
  --white: #ffffff;
  --line: rgba(15, 70, 65, .14);
  --shadow: 0 24px 70px rgba(2, 45, 42, .14);
  --radius: 26px;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.section { padding: 112px 0; }
.section-dark { color: var(--white); background: var(--deep); }
.section-soft { background: var(--cream); }
.skip-link { position: fixed; z-index: 9999; top: -50px; left: 20px; padding: 10px 16px; border-radius: 10px; color: white; background: #000; }
.skip-link:focus { top: 20px; }

.site-header {
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  width: 100%;
  border-bottom: 1px solid transparent;
  transition: .3s ease;
}
.site-header.is-scrolled {
  background: rgba(4, 48, 44, .88);
  border-bottom-color: rgba(255,255,255,.1);
  box-shadow: 0 12px 35px rgba(2, 30, 28, .18);
  backdrop-filter: blur(18px);
}
.nav-wrap { height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: white; }
.brand-mark { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 15px 15px 18px 18px; color: var(--deep); background: var(--mint); font-weight: 900; box-shadow: inset 0 -5px 12px rgba(0,0,0,.12); }
.brand strong { display: block; letter-spacing: .08em; font-size: 18px; }
.brand small { display: block; margin-top: -3px; font-size: 9px; opacity: .62; letter-spacing: .18em; }
.site-nav { display: flex; align-items: center; gap: 30px; color: rgba(255,255,255,.78); font-size: 14px; }
.site-nav a { position: relative; transition: color .2s ease; }
.site-nav a:not(.nav-cta)::after { content: ""; position: absolute; left: 0; bottom: -8px; width: 0; height: 2px; background: var(--mint); transition: width .2s ease; }
.site-nav a:hover { color: white; }
.site-nav a:hover::after { width: 100%; }
.nav-cta { padding: 10px 17px; border-radius: 999px; color: var(--deep) !important; background: var(--mint); font-weight: 700; }
.menu-button { display: none; width: 44px; height: 44px; padding: 10px; border: 0; border-radius: 12px; background: rgba(255,255,255,.1); cursor: pointer; }
.menu-button span { display: block; height: 2px; margin: 5px 0; background: white; transition: .25s ease; }

.hero { position: relative; min-height: 920px; padding: 160px 0 64px; overflow: hidden; background: radial-gradient(circle at 80% 10%, #0b5c54 0, var(--deep) 34%, var(--deep-2) 100%); }
.hero::before { content: ""; position: absolute; inset: 0; opacity: .08; 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: 58px 58px; mask-image: linear-gradient(to bottom, black, transparent 76%); }
.hero-glow { position: absolute; width: 420px; height: 420px; border-radius: 50%; filter: blur(90px); opacity: .22; }
.hero-glow-a { top: -160px; right: -60px; background: var(--mint); }
.hero-glow-b { bottom: 40px; left: -170px; background: var(--coral); }
.hero-grid { position: relative; display: grid; grid-template-columns: .95fr 1.2fr; gap: 72px; align-items: center; }
.eyebrow { margin: 0 0 16px; color: var(--mint-light); font-size: 12px; font-weight: 800; letter-spacing: .22em; }
.eyebrow.dark { color: #178f86; }
.hero h1 { margin: 0; font-size: clamp(48px, 6vw, 78px); line-height: 1.15; letter-spacing: -.04em; }
.hero h1 span { color: var(--mint); }
.hero-lead { max-width: 630px; margin: 26px 0 0; color: rgba(255,255,255,.72); font-size: 18px; }
.hero-actions { display: flex; gap: 14px; margin: 36px 0 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border-radius: 999px; font-weight: 800; transition: transform .22s ease, box-shadow .22s ease, background .22s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--deep); background: var(--mint); box-shadow: 0 14px 30px rgba(39,201,189,.22); }
.button-primary:hover { box-shadow: 0 18px 40px rgba(39,201,189,.33); }
.button-ghost { color: white; border: 1px solid rgba(255,255,255,.26); background: rgba(255,255,255,.06); }
.button-ghost:hover { background: rgba(255,255,255,.12); }
.button-dark { color: white; background: var(--deep); box-shadow: 0 14px 30px rgba(6,59,55,.18); }
.hero-tags { display: flex; flex-wrap: wrap; gap: 9px; }
.hero-tags span { padding: 6px 12px; border: 1px solid rgba(255,255,255,.14); border-radius: 999px; color: rgba(255,255,255,.64); font-size: 12px; }
.hero-visual { position: relative; }
.visual-frame { position: relative; overflow: hidden; border: 1px solid rgba(255,255,255,.16); border-radius: 32px; background: rgba(255,255,255,.08); box-shadow: 0 40px 100px rgba(0,0,0,.35); transform: rotate(1.2deg); }
.visual-frame::after { content: ""; position: absolute; inset: 0; box-shadow: inset 0 0 0 10px rgba(255,255,255,.045); border-radius: inherit; pointer-events: none; }
.visual-frame img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.floating-card { position: absolute; z-index: 3; display: grid; gap: 2px; min-width: 150px; padding: 14px 18px; border: 1px solid rgba(255,255,255,.22); border-radius: 18px; background: rgba(3,42,39,.72); box-shadow: 0 16px 40px rgba(0,0,0,.24); backdrop-filter: blur(14px); }
.floating-card strong { color: var(--mint-light); font-size: 14px; }
.floating-card span { color: rgba(255,255,255,.64); font-size: 12px; }
.floating-card-a { top: -24px; right: -24px; }
.floating-card-b { left: -30px; bottom: -30px; }
.stats-strip { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 100px; border: 1px solid rgba(255,255,255,.13); border-radius: 24px; background: rgba(255,255,255,.055); backdrop-filter: blur(12px); }
.stats-strip article { padding: 24px 28px; border-right: 1px solid rgba(255,255,255,.11); }
.stats-strip article:last-child { border-right: 0; }
.stats-strip strong { display: inline-block; color: var(--mint); font-size: 31px; line-height: 1; }
.stats-strip span { margin-left: 4px; color: rgba(255,255,255,.68); font-size: 13px; }

.split-layout { display: grid; grid-template-columns: 1.05fr .95fr; gap: 72px; align-items: center; }
.split-layout.reverse { grid-template-columns: .92fr 1.08fr; }
.media-card { overflow: hidden; border-radius: var(--radius); box-shadow: var(--shadow); }
.media-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; transition: transform .55s ease; }
.media-card:hover img { transform: scale(1.025); }
h2 { margin: 0; font-size: clamp(34px, 4.1vw, 54px); line-height: 1.22; letter-spacing: -.04em; }
.lead { color: var(--muted); font-size: 17px; }
.content-block .lead { margin: 22px 0 30px; }
.feature-list { display: grid; gap: 18px; }
.feature-list article { display: flex; gap: 18px; padding-top: 18px; border-top: 1px solid var(--line); }
.feature-no { flex: 0 0 44px; width: 44px; height: 44px; display: grid; place-items: center; border-radius: 14px; color: var(--deep); background: #d8f6f2; font-size: 12px; font-weight: 900; }
.feature-list h3 { margin: 0 0 4px; font-size: 17px; }
.feature-list p { margin: 0; color: var(--muted); font-size: 14px; }

.section-heading { max-width: 760px; margin-bottom: 46px; }
.section-heading.centered { margin-inline: auto; text-align: center; }
.section-heading p:last-child { margin: 18px 0 0; color: var(--muted); }
.section-dark .section-heading p:last-child { color: rgba(255,255,255,.64); }
.ecosystem-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.ecosystem-card { position: relative; min-height: 360px; overflow: hidden; border-radius: 24px; box-shadow: var(--shadow); }
.ecosystem-card.large { grid-row: span 2; min-height: 740px; }
.ecosystem-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .65s ease; }
.ecosystem-card:hover img { transform: scale(1.045); }
.ecosystem-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(3,35,33,.96) 0, rgba(3,35,33,.24) 58%, transparent 82%); }
.card-overlay { position: absolute; z-index: 2; inset: auto 0 0; padding: 30px; color: white; }
.card-overlay span { display: inline-grid; place-items: center; width: 42px; height: 42px; margin-bottom: 14px; border-radius: 14px; color: var(--deep); background: var(--mint); font-weight: 900; }
.card-overlay h3 { margin: 0; font-size: 24px; }
.card-overlay p { max-width: 520px; margin: 8px 0 0; color: rgba(255,255,255,.68); font-size: 14px; }

.services-section { background: linear-gradient(135deg, var(--deep-2), var(--deep)); }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.service-card { min-height: 210px; padding: 28px; border: 1px solid rgba(255,255,255,.12); border-radius: 22px; background: rgba(255,255,255,.055); transition: .25s ease; }
.service-card:hover { transform: translateY(-5px); border-color: rgba(39,201,189,.45); background: rgba(255,255,255,.08); }
.service-card span { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; color: var(--deep); background: var(--mint); font-size: 12px; font-weight: 900; }
.service-card h3 { margin: 24px 0 8px; font-size: 20px; }
.service-card p { margin: 0; color: rgba(255,255,255,.62); font-size: 14px; }

.app-section { overflow: hidden; background: linear-gradient(180deg, #fff 0, #f6fffd 100%); }
.app-grid { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 70px; }
.app-copy .lead { margin: 24px 0; }
.check-list { display: grid; gap: 12px; margin: 0 0 32px; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 30px; color: #405f5c; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 1px; width: 21px; height: 21px; display: grid; place-items: center; border-radius: 50%; color: white; background: #1ca79e; font-size: 12px; font-weight: 900; }
.phone-stage { position: relative; min-height: 680px; }
.phone { position: absolute; width: 42%; filter: drop-shadow(0 30px 45px rgba(6,59,55,.22)); }
.phone-back { top: 40px; left: 3%; transform: rotate(-8deg); }
.phone-main { z-index: 2; top: 0; left: 29%; width: 45%; }
.phone-front { top: 60px; right: -1%; transform: rotate(8deg); }
.app-gallery { display: grid; grid-template-columns: .9fr 1.35fr; gap: 18px; margin-top: 40px; }
.app-gallery img { width: 100%; height: 260px; object-fit: contain; padding: 18px; border: 1px solid var(--line); border-radius: 22px; background: white; box-shadow: 0 18px 50px rgba(6,59,55,.08); }

.advantages-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.advantage { padding: 32px 26px; border: 1px solid rgba(6,59,55,.1); border-radius: 22px; background: rgba(255,255,255,.74); }
.advantage-icon { width: 52px; height: 52px; display: grid; place-items: center; border-radius: 17px; color: var(--deep); background: var(--mint); font-size: 19px; font-weight: 900; }
.advantage h3 { margin: 22px 0 8px; }
.advantage p { margin: 0; color: var(--muted); font-size: 14px; }

.process-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 28px 0 0; padding: 0; list-style: none; }
.process-list li { display: flex; align-items: center; gap: 13px; padding: 15px; border: 1px solid var(--line); border-radius: 16px; }
.process-list li > span { flex: 0 0 38px; color: #168e85; font-size: 12px; font-weight: 900; }
.process-list strong, .process-list small { display: block; }
.process-list strong { font-size: 14px; }
.process-list small { color: var(--muted); font-size: 11px; }
.media-stack { position: relative; min-height: 560px; }
.media-stack img { position: absolute; width: 84%; border-radius: 24px; box-shadow: var(--shadow); }
.media-stack img:first-child { top: 0; right: 0; }
.media-stack img:last-child { bottom: 0; left: 0; border: 7px solid white; }

.contact-section { background: radial-gradient(circle at 90% 10%, #0d655d 0, var(--deep) 38%, var(--deep-2) 100%); }
.contact-grid { display: grid; grid-template-columns: 1.3fr .7fr; align-items: center; gap: 70px; }
.contact-copy h2 { font-size: clamp(38px, 5vw, 62px); }
.contact-copy > p:not(.eyebrow):not(.contact-note) { max-width: 680px; color: rgba(255,255,255,.65); font-size: 17px; }
.domain-card { display: inline-flex; flex-direction: column; margin: 25px 0 15px; padding: 17px 24px; border: 1px solid rgba(255,255,255,.16); border-radius: 18px; background: rgba(255,255,255,.06); }
.domain-card span { color: rgba(255,255,255,.5); font-size: 11px; letter-spacing: .12em; }
.domain-card strong { color: var(--mint); font-size: 25px; letter-spacing: .02em; }
.contact-note { color: rgba(255,255,255,.4); font-size: 12px; }
.qr-card { display: grid; justify-items: center; padding: 34px; border: 1px solid rgba(255,255,255,.16); border-radius: 28px; background: rgba(255,255,255,.07); box-shadow: 0 24px 70px rgba(0,0,0,.2); backdrop-filter: blur(16px); }
.qr-card img { width: min(100%, 260px); border-radius: 16px; }
.qr-card strong { margin-top: 20px; font-size: 20px; }
.qr-card span { color: rgba(255,255,255,.5); font-size: 12px; }

.site-footer { color: rgba(255,255,255,.7); background: #022724; }
.footer-row { min-height: 110px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.footer-brand strong, .footer-brand span { display: block; }
.footer-brand strong { color: white; font-size: 17px; }
.footer-brand span { color: rgba(255,255,255,.45); font-size: 12px; }
.footer-meta { display: flex; gap: 24px; align-items: center; font-size: 12px; }
.footer-meta a:hover { color: var(--mint); }
.back-to-top { position: fixed; z-index: 900; right: 22px; bottom: 22px; width: 46px; height: 46px; border: 0; border-radius: 50%; color: var(--deep); background: var(--mint); box-shadow: 0 12px 30px rgba(0,0,0,.18); opacity: 0; visibility: hidden; transform: translateY(15px); cursor: pointer; transition: .25s ease; }
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: none; }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity .75s ease, transform .75s cubic-bezier(.2,.7,.2,1); }
.reveal-delay { transition-delay: .12s; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 980px) {
  .site-nav { position: absolute; top: 70px; right: 20px; width: min(320px, calc(100vw - 40px)); display: grid; gap: 0; padding: 12px; border: 1px solid rgba(255,255,255,.12); border-radius: 20px; background: rgba(3,45,42,.97); box-shadow: 0 25px 70px rgba(0,0,0,.28); opacity: 0; visibility: hidden; transform: translateY(-12px); transition: .2s ease; }
  .site-nav.is-open { opacity: 1; visibility: visible; transform: none; }
  .site-nav a { padding: 12px 14px; border-radius: 12px; }
  .site-nav a:hover { background: rgba(255,255,255,.06); }
  .nav-cta { margin-top: 6px; text-align: center; }
  .menu-button { display: block; }
  .menu-button[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-button[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-button[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero { min-height: 0; }
  .hero-grid, .split-layout, .split-layout.reverse, .app-grid, .contact-grid { grid-template-columns: 1fr; }
  .hero-grid { gap: 60px; }
  .hero-copy { max-width: 720px; }
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
  .stats-strip article:nth-child(2) { border-right: 0; }
  .stats-strip article:nth-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.11); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .phone-stage { width: min(100%, 680px); margin-inline: auto; }
  .media-stack { min-height: 700px; }
  .contact-copy { text-align: center; }
  .contact-copy > p:not(.eyebrow):not(.contact-note) { margin-inline: auto; }
  .qr-card { width: min(100%, 430px); margin-inline: auto; }
}

@media (max-width: 680px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .section { padding: 78px 0; }
  .nav-wrap { height: 70px; }
  .brand strong { font-size: 16px; }
  .hero { padding-top: 120px; }
  .hero h1 { font-size: 44px; }
  .hero-lead { font-size: 16px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .button { width: 100%; }
  .visual-frame { border-radius: 22px; }
  .floating-card { display: none; }
  .stats-strip { margin-top: 62px; }
  .stats-strip article { padding: 20px 14px; }
  .stats-strip strong { font-size: 25px; }
  .stats-strip span { display: block; margin: 7px 0 0; font-size: 11px; }
  .split-layout { gap: 40px; }
  h2 { font-size: 36px; }
  .ecosystem-grid { grid-template-columns: 1fr; }
  .ecosystem-card, .ecosystem-card.large { grid-row: auto; min-height: 420px; }
  .services-grid, .advantages-grid { grid-template-columns: 1fr; }
  .phone-stage { min-height: 500px; }
  .phone { width: 45%; }
  .phone-main { left: 28%; width: 48%; }
  .app-gallery { grid-template-columns: 1fr; }
  .app-gallery img { height: 210px; }
  .process-list { grid-template-columns: 1fr; }
  .media-stack { min-height: 440px; }
  .media-stack img { width: 92%; }
  .contact-grid { gap: 40px; }
  .contact-copy h2 { font-size: 39px; }
  .domain-card strong { font-size: 21px; }
  .footer-row { flex-direction: column; align-items: flex-start; justify-content: center; padding: 25px 0; }
  .footer-meta { flex-direction: column; align-items: flex-start; gap: 6px; }
}

@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; }
}