:root { color-scheme: light; --ink: #14243b; --muted: #55647a; --blue: #245ce7; --line: #e4e9f0; --paper: #f7f9fc; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 94px; }
body { margin: 0; color: var(--ink); background: #fff; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 3px solid #5484ff; outline-offset: 6px; border-radius: 4px; }
img { display: block; max-width: 100%; }
p, h1, h2, h3 { margin: 0; }
.container { width: min(1160px, calc(100% - 64px)); margin-inline: auto; }
.skip-link { position: fixed; top: 12px; left: 20px; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); background: white; z-index: 10; }
.skip-link:focus { width: auto; height: auto; padding: 14px; clip-path: none; }
.header { border-bottom: 1px solid var(--line); background: #fff; }
.header-inner { min-height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 17px; }
.brand img { object-fit: contain; }
.brand-name { font-size: 21px; font-weight: 700; letter-spacing: 2px; padding-left: 17px; border-left: 1px solid #d8dfe9; white-space: nowrap; }
nav { display: flex; align-items: center; gap: 34px; font-size: 14px; font-weight: 500; }
nav a { padding-block: 12px; }
nav a:hover, .text-link:hover { color: var(--blue); }
.nav-login { border: 1px solid #d7dfea; padding: 11px 17px; border-radius: 6px; }
.nav-login span { margin-left: 12px; }
.hero { display: grid; grid-template-columns: 1.06fr 1fr; align-items: center; gap: 48px; padding-block: 83px 86px; }
.eyebrow { display: flex; align-items: center; gap: 9px; color: var(--blue); font-size: 13px; font-weight: 600; letter-spacing: 1.6px; line-height: 1.7; }
.eyebrow > span { width: 7px; height: 7px; border-radius: 50%; background: var(--blue); }
h1 { margin-top: 23px; font-size: clamp(40px, 4.2vw, 60px); line-height: 1.25; letter-spacing: -2px; font-weight: 750; }
.blue { color: var(--blue); }
.hero-description { margin-top: 26px; color: var(--muted); font-size: 16px; line-height: 1.95; }
.hero-actions { margin-top: 32px; display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 25px; min-height: 51px; padding: 13px 22px; border-radius: 6px; font-size: 14px; font-weight: 650; transition: background .16s, transform .16s; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: var(--blue); box-shadow: 0 7px 18px #245ce71a; }
.button-primary:hover { background: #174bd2; }
.button span { font-size: 20px; }
.text-link { font-size: 14px; font-weight: 550; padding-block: 12px; }
.text-link span { margin-left: 9px; }
.hero-note { margin-top: 24px; font-size: 12px; color: #64738a; letter-spacing: .3px; }
.workflow-art { position: relative; background: #f0f4fc; border: 1px solid #e1e8f5; padding: 26px; border-radius: 16px; overflow: hidden; }
.art-grid { position: absolute; inset: 0; opacity: .5; background-image: linear-gradient(#dce5f4 1px, transparent 1px), linear-gradient(90deg, #dce5f4 1px, transparent 1px); background-size: 28px 28px; pointer-events: none; }
.art-topline, .art-bottomline { position: relative; display: flex; justify-content: space-between; gap: 12px; color: #546987; font-size: 11px; letter-spacing: 1px; }
.art-topline { margin-bottom: 26px; }
.art-caption { color: #64738a; }
.flow-card { position: relative; border-radius: 10px; background: white; border: 1px solid #e1e7f0; }
.flow-source { display: flex; align-items: center; gap: 16px; width: 87%; padding: 21px; box-shadow: 0 8px 20px #213d7010; }
.flow-icon { display: grid; place-items: center; width: 40px; height: 40px; flex: 0 0 auto; background: #eef3ff; border-radius: 10px; font-size: 23px; color: var(--blue); }
.flow-step { display: block; font-size: 10px; letter-spacing: 1px; color: #60728c; margin-bottom: 8px; }
.flow-card strong { display: block; font-size: 15px; font-weight: 650; }
.flow-card p { margin-top: 7px; font-size: 10px; color: #68758b; }
.flow-connector { position: relative; display: flex; align-items: center; justify-content: center; gap: 13px; padding: 16px 0; font-size: 10px; color: #60728c; }
.flow-connector span { width: 34px; height: 1px; background: #b9c9e4; }
.flow-main { margin-left: 18px; padding: 24px 22px 18px; border: 1px solid #bacbf4; box-shadow: 0 12px 26px #24477912; }
.flow-main-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.flow-main .flow-step { color: var(--blue); }
.flow-badge { color: #2453b5; background: #edf3ff; border-radius: 4px; padding: 5px 7px; font-size: 9px; white-space: nowrap; }
.flow-items { display: flex; gap: 16px; margin-top: 23px; font-size: 11px; color: #556780; }
.flow-items i { font-style: normal; color: var(--blue); margin-right: 4px; }
.flow-timeline { display: flex; align-items: center; margin-top: 19px; }
.flow-timeline b { border: 2px solid #89a7ee; width: 7px; height: 7px; border-radius: 50%; }
.flow-timeline span { flex: 1; height: 1px; background: #dfe7f7; }
.flow-end { display: flex; align-items: center; gap: 13px; padding: 19px; margin-top: 20px; margin-left: 50px; }
.flow-end strong { font-size: 13px; }
.check-icon { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 50%; background: #edf6f2; color: #28775d; font-size: 16px; flex: 0 0 auto; }
.end-arrow { margin-left: auto; color: #718199; }
.art-bottomline { margin-top: 25px; font-size: 9px; }
.roles-bar { background: var(--paper); border-block: 1px solid #edf0f5; }
.roles-inner { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding-block: 28px; }
.roles-inner p { color: var(--muted); font-size: 13px; }
.roles-inner > div { display: flex; gap: 56px; font-size: 15px; font-weight: 600; letter-spacing: 1px; }
.section { padding-block: 88px; }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 25px; }
h2 { font-size: 36px; line-height: 1.45; letter-spacing: -1px; font-weight: 700; }
.section-heading h2, .collaboration h2 { margin-top: 15px; }
.section-description { color: var(--muted); font-size: 14px; line-height: 1.95; padding-bottom: 5px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 48px; }
.feature { border-top: 1px solid #cbd5e5; padding-top: 25px; }
.feature-number { font-size: 13px; font-weight: 600; color: var(--blue); font-variant-numeric: tabular-nums; }
.feature h3 { font-size: 20px; margin-top: 19px; }
.feature p { color: var(--muted); font-size: 14px; line-height: 1.9; margin-top: 15px; }
.feature-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 24px; }
.feature-tags span { background: #f4f6fa; color: #52617a; padding: 6px 9px; font-size: 11px; border-radius: 4px; }
.collaboration { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; background: var(--paper); border-radius: 12px; padding: 48px 52px; }
.collaboration > div > p:last-child { margin-top: 18px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.role-list { display: grid; align-content: center; }
.role-list article { display: flex; gap: 18px; align-items: flex-start; padding-block: 21px; }
.role-list article + article { border-top: 1px solid #dfe6ee; }
.role-index { display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid #d9e1ee; border-radius: 6px; color: #657c9e; font-size: 12px; flex: 0 0 auto; }
.role-list h3 { font-size: 16px; margin-bottom: 8px; }
.role-list p { font-size: 13px; color: var(--muted); line-height: 1.7; }
.download-section { padding-bottom: 56px; }
.download-panel { background: #122a52; border-radius: 12px; padding: 52px; display: flex; justify-content: space-between; align-items: center; gap: 50px; color: white; }
.download-panel .eyebrow { color: #b7ceff; }
.download-panel h2 { margin-top: 15px; font-size: 38px; }
.download-copy > p:not(.eyebrow):not(.download-meta) { color: #b7c7df; font-size: 14px; line-height: 1.8; margin-top: 19px; }
.download-actions { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; margin-top: 27px; }
.button-white { color: #122a52; background: white; }
.button-white:hover { background: #eaf0ff; }
.download-actions .text-link:hover { color: #bfd1ff; }
.download-meta { font-size: 11px; line-height: 1.7; color: #b7c7df; margin-top: 19px; }
.qr-block { text-align: center; flex: 0 0 auto; }
.qr-frame { padding: 12px; background: white; border-radius: 9px; width: 184px; margin-inline: auto; }
.qr-block strong { display: block; font-size: 13px; margin-top: 18px; font-weight: 500; }
.qr-block > span { display: block; margin-top: 9px; color: #b7c7df; font-size: 10px; }
.download-help { display: flex; gap: 9px; padding-top: 18px; color: #617189; font-size: 12px; line-height: 1.8; }
.footer { border-top: 1px solid var(--line); }
.footer-inner { min-height: 88px; display: flex; justify-content: space-between; align-items: center; gap: 20px; font-size: 12px; color: var(--muted); }
.footer-inner > div { display: flex; align-items: center; gap: 18px; }
.footer-brand { font-size: 16px; font-weight: 650; color: var(--ink); }
.footer a:hover { color: var(--blue); text-decoration: underline; }
@media (max-width: 1000px) {
  .hero { gap: 30px; padding-block: 60px; }
  .workflow-art { padding: 20px; }
  .flow-badge { display: none; }
  .flow-source { width: 100%; }
  .flow-end { margin-left: 20px; }
  .flow-items { gap: 8px; }
  .hero-actions { gap: 12px; }
  .hero-note { line-height: 1.8; }
  .desktop-break { display: none; }
  .feature-grid { gap: 26px; }
}
@media (max-width: 760px) {
  .container { width: calc(100% - 40px); }
  .header-inner { min-height: 72px; gap: 12px; }
  .brand { gap: 10px; }
  .brand img { width: 77px; height: auto; }
  .brand-name { font-size: 17px; padding-left: 10px; letter-spacing: 1px; }
  nav { gap: 15px; font-size: 12px; }
  .nav-feature { display: none; }
  .nav-login { padding: 9px 10px; }
  .nav-login span { display: none; }
  .hero { grid-template-columns: 1fr; gap: 40px; padding-block: 46px; }
  h1 { font-size: clamp(40px, 8.5vw, 58px); letter-spacing: -1.5px; }
  .hero-description { font-size: 15px; margin-top: 22px; }
  .hero-actions { gap: 20px; margin-top: 26px; }
  .workflow-art { width: 100%; max-width: 510px; justify-self: center; padding: 24px; }
  .flow-source { width: 87%; }
  .flow-main { margin-left: 15px; }
  .flow-end { margin-left: 40px; }
  .roles-inner { flex-direction: column; align-items: flex-start; gap: 18px; padding-block: 24px; }
  .roles-inner > div { width: 100%; justify-content: space-between; gap: 10px; font-size: 14px; }
  .section { padding-block: 56px; }
  .section-heading { display: block; }
  h2 { font-size: 30px; }
  .section-description { margin-top: 18px; }
  .feature-grid { grid-template-columns: 1fr; gap: 30px; margin-top: 32px; }
  .feature h3 { margin-top: 12px; }
  .feature-tags { margin-top: 17px; }
  .collaboration { grid-template-columns: 1fr; gap: 20px; padding: 30px 24px; }
  .download-panel { flex-direction: column; align-items: flex-start; gap: 34px; padding: 30px 24px; }
  .download-panel h2 { font-size: 31px; }
  .download-actions { gap: 14px; }
  .download-actions .button { padding-inline: 17px; gap: 15px; }
  .qr-block { align-self: center; }
  .download-help { font-size: 11px; }
  .footer-inner { padding-block: 25px; flex-direction: column; align-items: flex-start; gap: 17px; }
}
@media (max-width: 380px) {
  .brand-name { display: none; }
  .flow-source { width: 100%; padding: 15px; }
  .flow-main { margin-left: 0; padding: 20px 15px; }
  .flow-end { margin-left: 10px; padding: 15px; gap: 10px; }
  .flow-end strong { font-size: 12px; }
  .art-bottomline { letter-spacing: 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
  .button:hover { transform: none; }
}