:root {
  --cyan: #08bdd8;
  --cyan-dark: #057d91;
  --cyan-deep: #054b59;
  --cyan-pale: #eafafd;
  --ink: #10252a;
  --muted: #5b6d71;
  --line: #cfeef3;
  --white: #ffffff;
  --shadow: 0 18px 55px rgba(2, 97, 115, .10);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: #f7fcfd; font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif; line-height: 1.7; }
img { display: block; max-width: 100%; }
a { color: inherit; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 1000; padding: .75rem 1rem; background: var(--ink); color: #fff; border-radius: 8px; }
.skip-link:focus { top: 1rem; }
.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; }

.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.92); border-bottom: 1px solid rgba(207,238,243,.9); backdrop-filter: blur(18px); }
.nav-shell { width: min(1180px, calc(100% - 40px)); min-height: 76px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: inline-flex; align-items: center; gap: .8rem; color: var(--cyan-deep); text-decoration: none; font-size: 1.25rem; font-weight: 800; letter-spacing: .02em; }
.brand img { width: 44px; height: 44px; }
.nav-links { display: flex; align-items: center; gap: .35rem; margin: 0; padding: 0; list-style: none; }
.nav-links a { display: block; padding: .65rem .9rem; color: #334b50; text-decoration: none; font-size: .96rem; font-weight: 650; border-radius: 999px; transition: color .2s, background .2s; }
.nav-links a:hover, .nav-links a.active { color: var(--cyan-dark); background: var(--cyan-pale); }
.nav-toggle { display: none; width: 44px; height: 44px; padding: 11px; border: 1px solid var(--line); border-radius: 12px; background: var(--white); }
.nav-toggle span:not(.sr-only) { display: block; height: 2px; margin: 4px 0; background: var(--cyan-deep); border-radius: 2px; }

main { overflow: hidden; }
.hero, .section { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.hero { position: relative; min-height: 590px; padding: 8.5rem 0 6rem; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; }
.hero::after { content: ""; position: absolute; inset: 2.5rem -30vw auto 52%; height: 420px; background: radial-gradient(circle at center, rgba(8,189,216,.16), transparent 66%); pointer-events: none; }
.hero-glow { position: absolute; width: 360px; height: 360px; right: 2%; top: 105px; border: 1px solid rgba(8,189,216,.22); border-radius: 50%; box-shadow: 0 0 0 42px rgba(8,189,216,.035), 0 0 0 84px rgba(8,189,216,.025); }
.hero-mark { position: absolute; right: 8%; top: 145px; width: 280px; filter: drop-shadow(0 28px 40px rgba(5,125,145,.20)); animation: float 5s ease-in-out infinite; }
.home-hero { min-height: 800px; padding-bottom: 25rem; align-items: center; text-align: center; }
.home-hero .hero-copy { margin-inline: auto; }
.home-hero .hero-mark { left: 0; right: 0; top: auto; bottom: 2.8rem; margin-inline: auto; }
.home-hero .hero-glow { left: 0; right: 0; top: auto; bottom: 0; margin-inline: auto; }
.eyebrow { margin: 0 0 1rem; color: var(--cyan-dark); font-size: .92rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.hero h1 { max-width: 720px; margin: 0; color: var(--ink); font-size: clamp(3.2rem, 7vw, 6.2rem); line-height: 1.08; letter-spacing: -.045em; }
.hero h1 span { display: block; color: var(--cyan); }
.hero-copy { max-width: 650px; margin: 1.75rem 0 0; color: var(--muted); font-size: 1.18rem; }
.button-row { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .7rem; min-height: 48px; padding: .75rem 1.35rem; border: 1px solid var(--cyan); border-radius: 12px; color: #fff; background: var(--cyan); text-decoration: none; font-weight: 750; box-shadow: 0 10px 24px rgba(8,189,216,.20); transition: transform .2s, background .2s, box-shadow .2s; }
.button:hover { transform: translateY(-2px); background: var(--cyan-dark); box-shadow: 0 15px 30px rgba(5,125,145,.24); }
.button-secondary { color: var(--cyan-dark); background: transparent; box-shadow: none; }

.section { padding: 6.5rem 0; }
.section-intro > h2, .cta h2 { max-width: 780px; margin: 0; font-size: clamp(2.2rem, 5vw, 4.2rem); line-height: 1.18; letter-spacing: -.035em; }
.lead { max-width: 760px; margin: 1.4rem 0 0; color: var(--muted); font-size: 1.08rem; }
.cards-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 1rem; margin-top: 3.2rem; }
.card { min-height: 260px; padding: 2rem; background: rgba(255,255,255,.92); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 9px 30px rgba(5,91,105,.05); transition: transform .25s, box-shadow .25s, border-color .25s; }
.card:hover { transform: translateY(-6px); border-color: var(--cyan); box-shadow: var(--shadow); }
.icon-box { width: 54px; height: 54px; display: grid; place-items: center; margin-bottom: 1.5rem; background: var(--cyan-pale); border: 1px solid var(--line); border-radius: 15px; font-family: "Apple Color Emoji", "Segoe UI Emoji", sans-serif; font-size: 1.65rem; }
.card h3 { margin: 0 0 .7rem; color: var(--cyan-deep); font-size: 1.28rem; }
.card p { margin: 0; color: var(--muted); }

.impact { width: min(1240px, calc(100% - 24px)); display: grid; grid-template-columns: .8fr 1.4fr; gap: 4rem; align-items: center; padding-inline: clamp(1.5rem, 5vw, 5rem); border-radius: 28px; background: linear-gradient(130deg, #073e49, #075f6e); color: #fff; box-shadow: 0 30px 80px rgba(2,76,89,.20); }
.impact .eyebrow { color: #6ee5f5; }
.impact h2 { margin: 0; font-size: clamp(2rem, 4vw, 3.3rem); line-height: 1.2; }
.stats { display: grid; grid-template-columns: repeat(2,1fr); gap: 1px; overflow: hidden; border: 1px solid rgba(255,255,255,.12); border-radius: 18px; background: rgba(255,255,255,.12); }
.stat { padding: 1.8rem; background: rgba(5,70,81,.94); }
.stat strong { display: block; color: #70e8f7; font-size: 2.4rem; line-height: 1.2; }
.stat span { color: rgba(255,255,255,.75); font-size: .94rem; }
.cta { text-align: center; display: flex; flex-direction: column; align-items: center; }
.cta p:not(.eyebrow) { margin: 1rem 0 1.8rem; color: var(--muted); font-size: 1.08rem; }

.page-hero { min-height: 390px; padding-block: 6.5rem 4.5rem; border-bottom: 1px solid var(--line); }
.page-hero::after { height: 330px; }
.page-hero h1 { max-width: 900px; font-size: clamp(3rem, 6.5vw, 5.4rem); }
.page-hero .hero-copy { max-width: 720px; }
.split-section { display: grid; grid-template-columns: minmax(0,1.15fr) minmax(280px,.85fr); gap: clamp(2rem, 7vw, 6rem); align-items: center; }
.split-section.reverse { grid-template-columns: minmax(280px,.85fr) minmax(0,1.15fr); }
.split-section h2, .section-heading h2 { margin: 0; font-size: clamp(2rem, 4.5vw, 3.5rem); line-height: 1.2; letter-spacing: -.03em; }
.split-section p, .section-heading p { color: var(--muted); }
.split-section p { margin: 1.25rem 0; }
.section-heading { max-width: 760px; }
.section-heading.centered { margin-inline: auto; text-align: center; }
.feature-panel { min-height: 330px; display: grid; place-items: center; position: relative; overflow: hidden; background: linear-gradient(145deg, #def8fc, #f8feff); border: 1px solid var(--line); border-radius: 28px; box-shadow: var(--shadow); font-family: "Apple Color Emoji", "Segoe UI Emoji", sans-serif; font-size: 6rem; }
.feature-panel::before, .feature-panel::after { content: ""; position: absolute; border: 1px solid rgba(8,189,216,.18); border-radius: 50%; }
.feature-panel::before { width: 230px; height: 230px; }
.feature-panel::after { width: 320px; height: 320px; }
.check-list { margin: 1.5rem 0 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding: .75rem 0 .75rem 2rem; border-bottom: 1px solid var(--line); color: #496065; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--cyan); font-weight: 900; }
.steps { counter-reset: step; display: grid; gap: 1rem; margin-top: 3rem; }
.step { counter-increment: step; display: grid; grid-template-columns: 72px 1fr; gap: 1.4rem; align-items: start; padding: 1.8rem; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.step::before { content: "0" counter(step); display: grid; place-items: center; width: 60px; height: 60px; color: var(--cyan-dark); background: var(--cyan-pale); border-radius: 14px; font-size: 1.2rem; font-weight: 900; }
.step h3 { margin: 0 0 .4rem; color: var(--cyan-deep); font-size: 1.25rem; }
.step p { margin: 0; color: var(--muted); }
.contact-strip { display: grid; grid-template-columns: repeat(3,1fr); gap: 1rem; margin-top: 3rem; }
.contact-card { padding: 2rem; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.contact-card .icon-box { margin-bottom: 1.25rem; }
.contact-card h3 { margin: 0 0 .8rem; color: var(--cyan-deep); }
.contact-card p { margin: .5rem 0; color: var(--muted); }
.contact-card a { color: var(--cyan-dark); font-weight: 700; text-decoration: none; overflow-wrap: anywhere; }
.faq-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 1rem; margin-top: 3rem; }
.faq-item { padding: 1.7rem; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.faq-item h3 { margin: 0 0 .65rem; color: var(--cyan-deep); font-size: 1.1rem; }
.faq-item p { margin: 0; color: var(--muted); }

.site-footer { padding: 4.5rem max(20px, calc((100vw - 1180px)/2)) 1.5rem; color: rgba(255,255,255,.76); background: #062f38; border-top: 4px solid var(--cyan); }
.footer-grid { display: grid; grid-template-columns: 1.7fr repeat(3,1fr); gap: 3rem; }
.brand-light { color: #fff; }
.footer-brand > p { max-width: 320px; margin: 1.2rem 0 .4rem; }
.footer-brand .company-name { color: rgba(255,255,255,.52); font-size: .88rem; }
.site-footer h2 { margin: .5rem 0 1.2rem; color: #fff; font-size: 1rem; }
.site-footer ul { margin: 0; padding: 0; list-style: none; }
.site-footer li { margin: .55rem 0; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: #77eaf8; }
.footer-bottom { display: flex; justify-content: center; gap: 1rem; margin-top: 3.5rem; padding-top: 1.4rem; border-top: 1px solid rgba(255,255,255,.1); font-size: .86rem; text-align: center; }
.footer-bottom p { margin: 0; }

@keyframes float { 50% { transform: translateY(-13px); } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; } }
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav-links { position: absolute; left: 20px; right: 20px; top: 68px; display: none; padding: .75rem; flex-direction: column; align-items: stretch; background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); }
  .nav-links.open { display: flex; }
  .nav-links a { padding: .8rem 1rem; }
  .hero { min-height: 640px; padding: 6rem 0 18rem; }
  .hero-mark { width: 190px; right: calc(50% - 95px); top: auto; bottom: 2rem; }
  .hero-glow { width: 250px; height: 250px; right: calc(50% - 125px); top: auto; bottom: 0; }
  .cards-grid { grid-template-columns: repeat(2,1fr); }
  .impact { grid-template-columns: 1fr; gap: 2.5rem; }
  .split-section, .split-section.reverse { grid-template-columns: 1fr; }
  .split-section.reverse .feature-panel { order: 2; }
  .contact-strip { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 620px) {
  .nav-shell, .hero, .section { width: min(100% - 28px, 1180px); }
  .brand { font-size: 1.12rem; }
  .hero { padding-top: 5rem; }
  .hero h1 { font-size: clamp(2.8rem, 15vw, 4.2rem); }
  .cards-grid, .stats, .footer-grid, .faq-grid { grid-template-columns: 1fr; }
  .step { grid-template-columns: 1fr; }
  .card { min-height: auto; }
  .impact { width: calc(100% - 16px); padding-block: 4.5rem; }
  .footer-bottom { flex-direction: column; }
}