:root {
  color-scheme: dark;
  --bg: #090b11;
  --surface: #11141d;
  --surface-2: #181b26;
  --line: #292d3a;
  --text: #f5f6fb;
  --muted: #a4a9bc;
  --purple: #8068ff;
  --blue: #60a8ff;
  --green: #43d6a0;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 max(24px, calc((100vw - var(--max)) / 2));
  border-bottom: 1px solid rgba(255,255,255,.08);
  background: rgba(9,11,17,.86);
  backdrop-filter: blur(18px);
}
.brand { display: inline-flex; align-items: center; gap: 12px; font-size: 19px; }
.brand b { font-weight: 800; }
.brand-mark {
  width: 30px;
  height: 30px;
  border: 5px solid var(--purple);
  border-top-color: var(--blue);
  border-right-color: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 28px rgba(128,104,255,.35);
}
nav, .footer-links { display: flex; align-items: center; gap: 28px; }
nav a, .footer-links a { color: var(--muted); font-size: 14px; }
nav a:hover, .footer-links a:hover { color: var(--text); }
main { overflow: hidden; }
.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 70px;
  align-items: center;
  width: min(var(--max), calc(100% - 48px));
  min-height: 700px;
  margin: 0 auto;
  padding: 90px 0;
}
.hero::before {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  left: -300px;
  top: 60px;
  border-radius: 50%;
  background: rgba(96,168,255,.12);
  filter: blur(70px);
  pointer-events: none;
}
.eyebrow { margin: 0 0 14px; color: #a99cff; font-size: 12px; font-weight: 800; letter-spacing: .18em; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 680px; margin-bottom: 24px; font-size: clamp(42px, 5.2vw, 68px); line-height: 1.1; letter-spacing: -.04em; }
.lead { max-width: 650px; color: var(--muted); font-size: 18px; }
.hero-actions { display: flex; gap: 14px; margin: 34px 0 30px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  font-weight: 750;
}
.button.primary { border-color: transparent; background: linear-gradient(135deg, var(--purple), #6650ed); }
.button.secondary { background: var(--surface); }
.button.light { border-color: transparent; background: white; color: #11131a; }
.trust-list { display: flex; flex-wrap: wrap; gap: 12px 24px; margin: 0; padding: 0; color: var(--muted); font-size: 13px; list-style: none; }
.trust-list li::before { content: "✓"; margin-right: 7px; color: var(--green); }
.hero-panel {
  padding: 26px;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: 26px;
  background: linear-gradient(150deg, rgba(28,31,43,.96), rgba(15,18,27,.96));
  box-shadow: 0 32px 90px rgba(0,0,0,.38), 0 0 70px rgba(128,104,255,.12);
}
.panel-top { display: flex; align-items: center; gap: 9px; padding-bottom: 22px; color: #d7daea; font-size: 14px; }
.status-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--green); box-shadow: 0 0 14px var(--green); }
.upload-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.upload-pair article { display: flex; min-height: 155px; flex-direction: column; justify-content: center; padding: 20px; border: 1px dashed #3b4051; border-radius: 17px; background: #11141d; }
.upload-pair span { color: #8875ff; font-size: 12px; }
.upload-pair b { margin: 8px 0 5px; font-size: 18px; }
.upload-pair small { color: var(--muted); }
.flow-line { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; margin: 24px 0; }
.flow-line i { height: 5px; border-radius: 99px; background: linear-gradient(90deg, var(--purple), var(--blue)); opacity: .7; }
.result-preview { display: grid; grid-template-columns: repeat(3,1fr); gap: 11px; }
.result-preview div { aspect-ratio: 4/5; border-radius: 13px; background: linear-gradient(150deg, #8d7a67, #d6c7b6 55%, #6f5949); }
.result-preview div:nth-child(2) { background: linear-gradient(150deg, #a7a0a0, #eee7dd 55%, #78706c); }
.result-preview div:nth-child(3) { background: linear-gradient(150deg, #6a5749, #d2bea4 60%, #353943); }
.section { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; padding: 105px 0; }
.section-heading { max-width: 720px; margin: 0 auto 48px; text-align: center; }
.section-heading.left { margin-left: 0; text-align: left; }
.section-heading h2, .business-cta h2, .legal-main h1 { margin-bottom: 16px; font-size: clamp(30px, 4vw, 48px); line-height: 1.2; letter-spacing: -.025em; }
.section-heading p:not(.eyebrow), .business-cta p, .legal-main p, .legal-main li { color: var(--muted); }
.card-grid { display: grid; gap: 18px; }
.card-grid.three { grid-template-columns: repeat(3,1fr); }
.feature-card, .assurance-card { min-height: 250px; padding: 30px; border: 1px solid var(--line); border-radius: 20px; background: var(--surface); }
.feature-card h3, .assurance-card h3 { margin: 26px 0 12px; font-size: 21px; }
.feature-card p, .assurance-card p { color: var(--muted); }
.card-number { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; border-radius: 12px; background: rgba(128,104,255,.13); color: #b6aaff; font-weight: 800; }
.compact .assurance-card { min-height: 190px; }
.compact .assurance-card h3 { margin-top: 0; }
.service-section { padding-top: 70px; }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.service-card { min-height: 230px; padding: 30px; border: 1px solid var(--line); border-radius: 20px; background: linear-gradient(145deg, var(--surface), #121621); }
.service-card h3 { margin: 26px 0 12px; font-size: 21px; }
.service-card p, .service-note p, .contact-copy p, .contact-card dd { color: var(--muted); }
.service-note { display: grid; grid-template-columns: 160px 1fr; gap: 22px; margin-top: 18px; padding: 24px 30px; border: 1px solid rgba(128,104,255,.28); border-radius: 18px; background: rgba(128,104,255,.07); }
.service-note p { margin: 0; }
.contact-section { display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; align-items: center; }
.contact-copy h2 { margin-bottom: 16px; font-size: clamp(30px, 4vw, 48px); line-height: 1.2; letter-spacing: -.025em; }
.contact-card { padding: 12px 30px; border: 1px solid var(--line); border-radius: 22px; background: var(--surface); }
.contact-card dl { margin: 0; }
.contact-card dl div { display: grid; grid-template-columns: 110px 1fr; gap: 20px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.contact-card dl div:last-child { border-bottom: 0; }
.contact-card dt { font-weight: 800; }
.contact-card dd { margin: 0; }
.workflow-section { display: grid; grid-template-columns: .75fr 1.25fr; gap: 70px; align-items: start; }
.steps { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.steps li { display: flex; gap: 20px; padding: 22px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.steps span { display: flex; flex: 0 0 38px; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 50%; background: var(--surface-2); color: #b9aeff; font-weight: 800; }
.steps h3 { margin-bottom: 5px; }
.steps p { margin-bottom: 0; color: var(--muted); }
.business-cta { display: flex; align-items: center; justify-content: space-between; gap: 40px; width: min(var(--max), calc(100% - 48px)); margin: 70px auto 110px; padding: 52px; border-radius: 25px; background: linear-gradient(135deg, #6751e9, #3f77cf); }
.business-cta p { margin-bottom: 0; color: rgba(255,255,255,.8); }
.site-footer { display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: end; padding: 52px max(24px, calc((100vw - var(--max)) / 2)); border-top: 1px solid var(--line); background: #07090e; }
.site-footer p { margin: 12px 0 0; color: var(--muted); font-size: 13px; }
.filing { grid-column: 1/-1; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.07); }
.legal-main { width: min(860px, calc(100% - 48px)); margin: 0 auto; padding: 92px 0 120px; }
.legal-main .legal-meta { margin-bottom: 46px; padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.legal-section { margin: 42px 0; }
.legal-section h2 { font-size: 23px; }
.legal-section li { margin: 9px 0; }
.notice { padding: 20px; border: 1px solid rgba(128,104,255,.35); border-radius: 14px; background: rgba(128,104,255,.08); color: #ded9ff; }

@media (max-width: 900px) {
  .site-header nav { display: none; }
  .hero, .workflow-section { grid-template-columns: 1fr; }
  .hero { gap: 45px; padding: 70px 0; }
  .card-grid.three, .service-grid, .contact-section { grid-template-columns: 1fr; }
  .workflow-section { gap: 10px; }
  .business-cta { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 600px) {
  .hero, .section, .business-cta, .legal-main { width: min(100% - 30px, var(--max)); }
  .site-header { min-height: 64px; padding: 0 16px; }
  h1 { font-size: 40px; }
  .upload-pair { grid-template-columns: 1fr; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .site-footer { grid-template-columns: 1fr; }
  .footer-links { flex-wrap: wrap; gap: 16px; }
  .service-note, .contact-card dl div { grid-template-columns: 1fr; gap: 8px; }
  .filing { grid-column: auto; }
}