@charset "UTF-8";

:root {
  color-scheme: dark;
  --bg: oklch(0.12 0.025 300);
  --bg-deep: oklch(0.09 0.022 295);
  --surface: oklch(0.17 0.032 298 / 0.8);
  --surface-strong: oklch(0.21 0.04 297);
  --text: oklch(0.97 0.012 300);
  --muted: oklch(0.72 0.025 295);
  --primary: oklch(0.7 0.19 300);
  --primary-soft: oklch(0.76 0.14 285);
  --cyan: oklch(0.79 0.13 205);
  --warm: oklch(0.75 0.17 18);
  --border: oklch(0.96 0.02 300 / 0.12);
  --border-strong: oklch(0.76 0.14 292 / 0.3);
  --shadow: 0 24px 80px oklch(0.04 0.03 300 / 0.45);
  --radius-sm: 0.75rem;
  --radius: 1.25rem;
  --radius-lg: 2rem;
  --shell: 1180px;
  --font-sans: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 6rem; }
body { margin: 0; min-width: 320px; background: var(--bg); color: var(--text); font-family: var(--font-sans); line-height: 1.7; -webkit-font-smoothing: antialiased; }
body::before { content: ""; position: fixed; inset: 0; z-index: -2; background: linear-gradient(180deg, oklch(0.15 0.05 300), var(--bg) 34rem, var(--bg-deep)); }
body::after { content: ""; position: fixed; inset: 0; z-index: -1; opacity: .28; pointer-events: none; background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(to bottom, black, transparent 60%); }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
p, h1, h2, h3 { margin-top: 0; }
p { color: var(--muted); }
.shell { width: min(calc(100% - 2rem), var(--shell)); margin-inline: auto; }
.section { padding: clamp(5rem, 9vw, 8rem) 0; }
.section--surface { position: relative; border-block: 1px solid var(--border); background: oklch(0.13 0.028 298 / .72); }
.skip-link { position: fixed; top: .75rem; left: .75rem; z-index: 999; padding: .7rem 1rem; border-radius: .5rem; background: var(--text); color: var(--bg); transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
:focus-visible { outline: 3px solid var(--cyan); outline-offset: 4px; }

.site-header { position: sticky; top: 0; z-index: 100; border-bottom: 1px solid transparent; background: oklch(0.12 0.03 300 / .78); backdrop-filter: blur(18px); transition: border-color .2s, background-color .2s; }
.site-header.is-scrolled { border-color: var(--border); background: oklch(0.1 0.025 300 / .92); }
.site-header__inner { min-height: 5rem; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: inline-flex; align-items: center; gap: .75rem; flex: 0 0 auto; }
.brand__logo { width: 3rem; height: 3rem; border-radius: .85rem; box-shadow: 0 8px 24px oklch(0.05 0.03 300 / .5); }
.brand__text { display: grid; line-height: 1.25; }
.brand__text strong { font-size: 1.05rem; letter-spacing: .04em; }
.brand__text small { margin-top: .2rem; color: var(--muted); font-size: .7rem; }
.site-nav { display: flex; align-items: center; gap: clamp(.85rem, 2vw, 1.75rem); }
.site-nav a, .footer-nav a { color: var(--muted); font-size: .9rem; transition: color .2s; }
.site-nav a:hover, .footer-nav a:hover { color: var(--text); }
.site-nav__legal { padding: .55rem 1rem; border: 1px solid var(--border-strong); border-radius: 999px; color: var(--text) !important; }
.menu-toggle { display: none; width: 2.75rem; height: 2.75rem; border: 1px solid var(--border); border-radius: .75rem; background: var(--surface); align-items: center; justify-content: center; flex-direction: column; gap: 5px; cursor: pointer; }
.menu-toggle span { width: 1.2rem; height: 2px; background: currentColor; transition: transform .2s, opacity .2s; }

.hero { position: relative; overflow: hidden; min-height: calc(100vh - 5rem); display: grid; align-items: center; padding: clamp(4rem, 7vw, 7rem) 0 clamp(6rem, 10vw, 9rem); }
.hero__inner { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(20rem, .75fr); align-items: center; gap: clamp(3rem, 8vw, 7rem); }
.hero__glow { position: absolute; border-radius: 50%; filter: blur(4px); pointer-events: none; }
.hero__glow--one { width: 34rem; height: 34rem; top: -14rem; right: -8rem; background: radial-gradient(circle, oklch(0.64 0.2 302 / .22), transparent 66%); }
.hero__glow--two { width: 24rem; height: 24rem; bottom: -9rem; left: -9rem; background: radial-gradient(circle, oklch(0.76 0.14 205 / .13), transparent 68%); }
.eyebrow, .section-kicker { display: flex; align-items: center; gap: .65rem; margin-bottom: 1.1rem; color: var(--primary-soft); font-size: .78rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; }
.eyebrow span { width: 2.25rem; height: 1px; background: linear-gradient(90deg, var(--primary), var(--cyan)); }
.hero h1 { max-width: 12ch; margin-bottom: 1.5rem; font-size: clamp(2.8rem, 6vw, 5.6rem); line-height: 1.08; letter-spacing: -.055em; }
.hero h1 em { color: transparent; font-style: normal; background: linear-gradient(100deg, var(--primary-soft), var(--cyan)); background-clip: text; -webkit-background-clip: text; }
.hero__lead { max-width: 43rem; font-size: clamp(1rem, 1.6vw, 1.2rem); }
.hero__actions { display: flex; flex-wrap: wrap; gap: .85rem; margin: 2rem 0; }
.button { min-height: 3rem; display: inline-flex; align-items: center; justify-content: center; gap: .7rem; padding: .75rem 1.25rem; border-radius: .8rem; font-size: .92rem; font-weight: 700; transition: transform .18s, box-shadow .18s, border-color .18s; }
.button:hover { transform: translateY(-2px); }
.button--primary { background: linear-gradient(110deg, var(--primary), var(--primary-soft)); color: oklch(0.13 0.04 300); box-shadow: 0 12px 34px oklch(0.65 0.2 300 / .22); }
.button--secondary { border: 1px solid var(--border); background: var(--surface); }
.hero__facts { display: flex; flex-wrap: wrap; gap: 1rem 1.6rem; margin: 0; padding: 0; list-style: none; color: var(--muted); font-size: .82rem; }
.hero__facts span { color: var(--cyan); }
.hero__visual { position: relative; min-height: 38rem; display: grid; place-items: center; }
.hero-phone { width: min(19rem, 75vw); padding: .55rem; border: 1px solid oklch(0.95 0.02 300 / .2); border-radius: 2.7rem; background: linear-gradient(145deg, oklch(0.29 0.06 295), oklch(0.12 0.025 300)); box-shadow: var(--shadow); transform: rotate(4deg); }
.hero-phone__screen { overflow: hidden; aspect-ratio: 750 / 1624; border-radius: 2.2rem; background: #09090b; }
.hero-phone__screen img { width: 100%; height: 100%; object-fit: cover; }
.floating-card { position: absolute; display: flex; align-items: center; gap: .7rem; min-width: 11rem; padding: .8rem; border: 1px solid var(--border); border-radius: 1rem; background: oklch(0.2 0.04 298 / .86); box-shadow: 0 15px 45px oklch(0.05 0.04 300 / .48); backdrop-filter: blur(16px); }
.floating-card--top { top: 18%; left: -2%; }
.floating-card--bottom { right: -4%; bottom: 17%; }
.floating-card__icon { width: 2.45rem; height: 2.45rem; display: grid; place-items: center; border-radius: .75rem; background: oklch(0.7 0.18 300 / .22); color: var(--primary-soft); font-size: 1.25rem; }
.floating-card__icon--warm { background: oklch(0.72 0.17 18 / .18); color: var(--warm); }
.floating-card span:last-child { display: grid; line-height: 1.35; }
.floating-card strong { font-size: .82rem; }
.floating-card small { margin-top: .15rem; color: var(--muted); font-size: .68rem; }

.intro__grid, .company__grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(2rem, 8vw, 7rem); }
.intro h2, .section-heading h2, .company h2, .contact h2, .platform-card h2 { margin-bottom: 0; font-size: clamp(2rem, 4vw, 3.5rem); line-height: 1.15; letter-spacing: -.035em; }
.intro__copy p, .company__copy p { font-size: 1.05rem; }
.intro__copy p:last-child, .company__copy p:last-child { margin-bottom: 0; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 3rem; margin-bottom: 3rem; }
.section-heading > p { max-width: 34rem; margin-bottom: .35rem; }
.section-heading--center { max-width: 48rem; margin-inline: auto; align-items: center; flex-direction: column; gap: .8rem; text-align: center; }
.section-heading--center .section-kicker { margin-bottom: 0; }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.feature-card { position: relative; min-height: 20rem; padding: 1.75rem; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius); background: linear-gradient(145deg, oklch(0.2 0.04 298 / .82), oklch(0.14 0.027 300 / .9)); transition: transform .22s, border-color .22s; }
.feature-card:hover { transform: translateY(-5px); border-color: var(--border-strong); }
.feature-card--featured { background: linear-gradient(145deg, oklch(0.33 0.12 304 / .92), oklch(0.19 0.07 287 / .92)); }
.feature-card__number { position: absolute; top: 1.2rem; right: 1.4rem; color: oklch(0.92 0.02 300 / .18); font-size: 3rem; font-weight: 800; line-height: 1; }
.feature-card__icon { width: 3rem; height: 3rem; display: grid; place-items: center; margin-bottom: 3.5rem; border: 1px solid var(--border); border-radius: .9rem; background: oklch(0.93 0.03 300 / .07); color: var(--primary-soft); font-size: 1.3rem; }
.feature-card h3 { margin-bottom: .6rem; font-size: 1.35rem; }
.feature-card p { font-size: .9rem; }
.feature-card__tag { position: absolute; bottom: 1.5rem; left: 1.75rem; color: var(--cyan); font-size: .75rem; font-weight: 700; letter-spacing: .08em; }

.showcase-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; align-items: start; }
.showcase-card--offset { margin-top: 3rem; }
.showcase-card__image { overflow: hidden; aspect-ratio: 750 / 1624; padding: .35rem; border: 1px solid var(--border); border-radius: 1.75rem; background: var(--surface-strong); box-shadow: 0 18px 55px oklch(0.05 0.02 300 / .36); }
.showcase-card__image img { width: 100%; height: 100%; object-fit: cover; border-radius: 1.42rem; transition: transform .4s ease; }
.showcase-card:hover img { transform: scale(1.018); }
.showcase-card__body { padding: 1.25rem .25rem 0; }
.showcase-card__body span { color: var(--primary-soft); font-size: .72rem; font-weight: 700; letter-spacing: .14em; }
.showcase-card__body h3 { margin: .3rem 0 .45rem; font-size: 1rem; }
.showcase-card__body p { font-size: .82rem; line-height: 1.65; }

.steps { counter-reset: steps; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin: 0 0 4rem; padding: 0; list-style: none; }
.steps li { display: flex; gap: 1.2rem; padding: 1.5rem; border-top: 1px solid var(--border-strong); }
.steps__number { color: var(--primary-soft); font-size: .75rem; font-weight: 800; }
.steps h3 { margin-bottom: .4rem; font-size: 1rem; }
.steps p { margin-bottom: 0; font-size: .85rem; }
.platform-card { display: grid; grid-template-columns: 1.25fr .75fr; align-items: center; gap: 3rem; padding: clamp(2rem, 5vw, 4rem); overflow: hidden; border: 1px solid var(--border-strong); border-radius: var(--radius-lg); background: radial-gradient(circle at 85% 30%, oklch(0.68 0.17 296 / .2), transparent 34%), linear-gradient(120deg, oklch(0.24 0.08 304), oklch(0.15 0.035 285)); }
.platform-card__content p:last-child { max-width: 42rem; margin: 1rem 0 0; }
.platform-card__badges { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.platform-card__badges div { display: grid; min-height: 8rem; padding: 1.2rem; border: 1px solid var(--border); border-radius: 1rem; background: oklch(0.95 0.02 300 / .07); }
.platform-card__badges span { color: var(--cyan); }
.platform-card__badges strong { align-self: end; }
.platform-card__badges small { color: var(--muted); }

.company__heading { position: relative; }
.company__heading::after { content: "ZH"; position: absolute; bottom: -2rem; left: 0; color: oklch(0.95 0.02 300 / .035); font-size: 11rem; font-weight: 900; line-height: 1; pointer-events: none; }
.company__copy { position: relative; z-index: 1; }
.contact { padding-top: 0; }
.contact-card { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 3rem; padding: clamp(2rem, 5vw, 4rem); border: 1px solid var(--border); border-radius: var(--radius-lg); background: linear-gradient(135deg, oklch(0.2 0.065 302), oklch(0.13 0.03 291)); box-shadow: var(--shadow); }
.contact-card > div > p:last-child { margin: 1rem 0 0; }
.contact-card address { display: flex; align-items: center; gap: 1rem; padding: 1.25rem; border: 1px solid var(--border); border-radius: 1rem; background: oklch(0.96 0.02 300 / .06); font-style: normal; }
.contact-card__icon { width: 3rem; height: 3rem; flex: 0 0 auto; display: grid; place-items: center; border-radius: .9rem; background: oklch(0.7 0.17 300 / .2); color: var(--primary-soft); font-size: 1.3rem; }
.contact-card address div { display: grid; }
.contact-card address small { color: var(--muted); }
.contact-card address strong { margin-top: .2rem; font-size: .94rem; }

.site-footer { border-top: 1px solid var(--border); background: var(--bg-deep); }
.site-footer__top { display: grid; grid-template-columns: 1.4fr .8fr .6fr; gap: 2rem; padding-block: 3.5rem; }
.brand--footer { align-self: start; }
.footer-nav { display: grid; align-content: start; gap: .65rem; }
.site-footer__bottom { min-height: 4.5rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; border-top: 1px solid var(--border); }
.site-footer__bottom p, .site-footer__bottom a { margin: 0; color: var(--muted); font-size: .76rem; }
.site-footer__bottom a:hover { color: var(--text); }

/* Agreement and privacy pages */
.legal-main { padding: 4rem 0 7rem; }
.legal-hero { max-width: 54rem; margin: 0 auto 2rem; text-align: center; }
.legal-hero h1 { margin-bottom: 1rem; font-size: clamp(2.3rem, 5vw, 4.2rem); line-height: 1.15; letter-spacing: -.04em; }
.legal-meta { display: flex; justify-content: center; flex-wrap: wrap; gap: .65rem 1.5rem; color: var(--muted); font-size: .85rem; }
.legal-layout { display: grid; grid-template-columns: 15rem minmax(0, 1fr); align-items: start; gap: 2rem; max-width: 980px; margin: 0 auto; }
.legal-toc { position: sticky; top: 6.5rem; padding: 1.25rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.legal-toc strong { display: block; margin-bottom: .75rem; font-size: .85rem; }
.legal-toc a { display: block; padding: .35rem 0; color: var(--muted); font-size: .78rem; }
.legal-toc a:hover { color: var(--text); }
.legal-content { padding: clamp(1.5rem, 5vw, 3.5rem); border: 1px solid var(--border); border-radius: var(--radius-lg); background: oklch(0.15 0.028 298 / .88); }
.legal-notice { margin-bottom: 2rem; padding: 1rem 1.2rem; border-left: 3px solid var(--primary); border-radius: .5rem; background: oklch(0.7 0.17 300 / .08); color: var(--muted); font-size: .9rem; }
.legal-section + .legal-section { margin-top: 2.5rem; padding-top: 2.5rem; border-top: 1px solid var(--border); }
.legal-section h2 { margin-bottom: .85rem; font-size: 1.35rem; }
.legal-section h3 { margin: 1.4rem 0 .5rem; font-size: 1rem; }
.legal-section p, .legal-section li { color: var(--muted); font-size: .92rem; }
.legal-section ul, .legal-section ol { padding-left: 1.4rem; }
.legal-section li + li { margin-top: .5rem; }
.legal-back { margin-top: 2rem; text-align: center; }

@media (max-width: 960px) {
  .site-nav { gap: .8rem; }
  .site-nav a { font-size: .8rem; }
  .hero__inner { grid-template-columns: 1fr .75fr; gap: 2rem; }
  .floating-card { display: none; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .showcase-grid { grid-template-columns: repeat(2, 1fr); }
  .showcase-card--offset { margin-top: 0; }
}

@media (max-width: 760px) {
  html { scroll-padding-top: 5rem; }
  .site-header__inner { min-height: 4.5rem; }
  .brand__text small { display: none; }
  .menu-toggle { display: flex; }
  .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: absolute; top: calc(100% + 1px); left: 1rem; right: 1rem; display: none; padding: .75rem; border: 1px solid var(--border); border-radius: 1rem; background: oklch(0.12 0.03 300 / .98); box-shadow: var(--shadow); }
  .site-nav.is-open { display: grid; }
  .site-nav a { min-height: 2.75rem; display: flex; align-items: center; padding: 0 .75rem; border-radius: .6rem; font-size: .9rem; }
  .site-nav a:hover { background: var(--surface); }
  .site-nav__legal { border: 0; }
  .legal-page-nav { position: static; display: flex; padding: 0; border: 0; background: transparent; box-shadow: none; }
  .legal-page-nav a { min-height: 2.5rem; padding: 0 .5rem; }
  .legal-page-nav a:hover { background: transparent; }
  .hero { min-height: auto; padding-top: 3.5rem; }
  .hero__inner { grid-template-columns: 1fr; }
  .hero h1 { max-width: 11ch; }
  .hero__visual { min-height: 31rem; }
  .hero-phone { width: 15.5rem; transform: rotate(2deg); }
  .intro__grid, .company__grid, .contact-card, .platform-card { grid-template-columns: 1fr; gap: 1.75rem; }
  .section-heading { align-items: start; flex-direction: column; gap: 1rem; }
  .steps { grid-template-columns: 1fr; }
  .steps li { padding-inline: 0; }
  .platform-card__badges { grid-template-columns: 1fr 1fr; }
  .company__heading::after { display: none; }
  .site-footer__top { grid-template-columns: 1fr 1fr; }
  .brand--footer { grid-column: 1 / -1; }
  .site-footer__bottom { align-items: flex-start; flex-direction: column; justify-content: center; padding-block: 1rem; }
  .legal-layout { grid-template-columns: 1fr; }
  .legal-toc { position: static; }
  .legal-toc nav { columns: 2; }
}

@media (max-width: 520px) {
  .section { padding: 4.5rem 0; }
  .shell { width: min(calc(100% - 1.25rem), var(--shell)); }
  .hero__actions { display: grid; }
  .hero__facts { display: grid; gap: .5rem; }
  .feature-grid, .showcase-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 18rem; }
  .showcase-card { display: grid; grid-template-columns: minmax(8.5rem, .72fr) 1fr; gap: 1rem; align-items: center; }
  .showcase-card__body { padding-top: 0; }
  .showcase-card__body p { margin-bottom: 0; }
  .platform-card__badges { grid-template-columns: 1fr; }
  .contact-card address { align-items: flex-start; }
  .contact-card address strong { font-size: .85rem; }
  .legal-toc nav { columns: 1; }
  .legal-content { border-radius: var(--radius); }
}

@media (prefers-reduced-motion: no-preference) {
  .hero__content { animation: rise .55s ease-out both; }
  .hero__visual { animation: rise .65s .08s ease-out both; }
  .floating-card--top { animation: float 5s ease-in-out infinite; }
  .floating-card--bottom { animation: float 5.8s 1s ease-in-out infinite reverse; }
  @keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: translateY(0); } }
  @keyframes float { 50% { transform: translateY(-9px); } }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}