/* ============================================================
   Seller Pilot — global stylesheet
   Self-contained, no external dependencies (system font stack).
   ============================================================ */

:root {
  --indigo-900: #1e1b4b;
  --indigo-700: #4338ca;
  --indigo-600: #4f46e5;
  --indigo-500: #6366f1;
  --indigo-50:  #eef2ff;
  --teal-500:   #14b8a6;
  --teal-400:   #2dd4bf;
  --slate-900:  #0f172a;
  --slate-800:  #1e293b;
  --slate-700:  #334155;
  --slate-600:  #475569;
  --slate-500:  #64748b;
  --slate-400:  #94a3b8;
  --slate-300:  #cbd5e1;
  --slate-200:  #e2e8f0;
  --slate-100:  #f1f5f9;
  --slate-50:   #f8fafc;
  --white:      #ffffff;
  --amber-500:  #f59e0b;
  --green-500:  #22c55e;

  --maxw: 1160px;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, .08), 0 1px 2px rgba(15, 23, 42, .06);
  --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, .12), 0 8px 10px -6px rgba(15, 23, 42, .08);
  --shadow-lg: 0 25px 50px -12px rgba(30, 27, 75, .25);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
          Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  color: var(--slate-700);
  background: var(--white);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a { color: var(--indigo-600); text-decoration: none; transition: color .15s ease; }
a:hover { color: var(--indigo-700); }

h1, h2, h3, h4 { color: var(--slate-900); line-height: 1.2; font-weight: 700; letter-spacing: -.01em; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--indigo-600);
  margin-bottom: 14px;
}

.section { padding: 88px 0; }
.section--tint { background: var(--slate-50); }
.section__head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section__head h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 16px; }
.section__head p { font-size: 18px; color: var(--slate-600); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .18s ease;
  white-space: nowrap;
}
.btn--primary {
  background: var(--indigo-600);
  color: var(--white);
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover { background: var(--indigo-700); color: var(--white); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn--ghost {
  background: var(--white);
  color: var(--slate-800);
  border-color: var(--slate-200);
}
.btn--ghost:hover { border-color: var(--slate-300); color: var(--slate-900); background: var(--slate-50); }
.btn--light {
  background: rgba(255, 255, 255, .14);
  color: var(--white);
  border-color: rgba(255, 255, 255, .28);
}
.btn--light:hover { background: rgba(255, 255, 255, .24); color: var(--white); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--slate-200);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; color: var(--slate-900); letter-spacing: -.02em; }
.brand:hover { color: var(--slate-900); }
.brand__mark {
  width: 32px; height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--indigo-600), var(--teal-500));
  display: grid; place-items: center;
  color: #fff; font-weight: 800; font-size: 17px;
  box-shadow: var(--shadow-sm);
}
.nav__links { display: flex; align-items: center; gap: 30px; list-style: none; }
.nav__links a { color: var(--slate-600); font-weight: 500; font-size: 15px; }
.nav__links a:hover, .nav__links a.active { color: var(--slate-900); }
.nav__cta { display: flex; align-items: center; gap: 12px; }
.nav__toggle {
  display: none;
  background: none; border: none; cursor: pointer;
  width: 40px; height: 40px;
  flex-direction: column; justify-content: center; gap: 5px;
}
.nav__toggle span { display: block; height: 2px; width: 22px; background: var(--slate-800); border-radius: 2px; transition: .2s; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: radial-gradient(1200px 600px at 80% -10%, rgba(45, 212, 191, .18), transparent 60%),
              radial-gradient(900px 500px at 10% 0%, rgba(99, 102, 241, .18), transparent 55%),
              linear-gradient(180deg, #fbfbff 0%, #ffffff 100%);
  padding: 96px 0 80px;
  overflow: hidden;
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
}
.hero h1 { font-size: clamp(34px, 5vw, 56px); line-height: 1.08; margin-bottom: 22px; }
.hero h1 .grad {
  background: linear-gradient(120deg, var(--indigo-600), var(--teal-500));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero p.lead { font-size: 19px; color: var(--slate-600); max-width: 540px; margin-bottom: 32px; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__note { margin-top: 20px; font-size: 14px; color: var(--slate-500); display: flex; align-items: center; gap: 8px; }

/* dashboard mockup */
.mock {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.mock__bar { display: flex; align-items: center; gap: 7px; padding: 13px 16px; background: var(--slate-50); border-bottom: 1px solid var(--slate-200); }
.mock__bar i { width: 11px; height: 11px; border-radius: 50%; display: inline-block; }
.mock__bar i:nth-child(1){ background:#ff5f57 } .mock__bar i:nth-child(2){ background:#febc2e } .mock__bar i:nth-child(3){ background:#28c840 }
.mock__bar span { margin-left: 10px; font-size: 12.5px; color: var(--slate-500); }
.mock__body { padding: 20px; display: grid; gap: 16px; }
.mock__stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.stat { background: var(--slate-50); border: 1px solid var(--slate-200); border-radius: 10px; padding: 14px; }
.stat b { display: block; font-size: 22px; color: var(--slate-900); }
.stat small { color: var(--slate-500); font-size: 12px; }
.stat .up { color: var(--green-500); font-weight: 600; font-size: 12px; }
.mock__chart { height: 132px; border: 1px solid var(--slate-200); border-radius: 10px; padding: 14px; background:
   linear-gradient(180deg, rgba(99,102,241,.06), transparent); display: flex; align-items: flex-end; gap: 8px; }
.mock__chart span { flex: 1; background: linear-gradient(180deg, var(--indigo-500), var(--teal-400)); border-radius: 5px 5px 0 0; opacity: .85; }

/* ---------- Logos / trust strip ---------- */
.trust { padding: 34px 0; border-top: 1px solid var(--slate-200); border-bottom: 1px solid var(--slate-200); background: var(--white); }
.trust p { text-align: center; color: var(--slate-500); font-size: 13px; letter-spacing: .06em; text-transform: uppercase; font-weight: 600; margin-bottom: 18px; }
.trust__row { display: flex; flex-wrap: wrap; gap: 18px 40px; justify-content: center; align-items: center; }
.trust__row .pill { font-weight: 700; color: var(--slate-400); font-size: 15px; letter-spacing: .02em; }

/* ---------- Feature grid ---------- */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--indigo-50); }
.card__icon {
  width: 46px; height: 46px; border-radius: 11px;
  display: grid; place-items: center; margin-bottom: 16px;
  background: var(--indigo-50); color: var(--indigo-600);
}
.card__icon svg { width: 24px; height: 24px; }
.card h3 { font-size: 18px; margin-bottom: 8px; }
.card p { font-size: 14.5px; color: var(--slate-600); }
.card .tag { display: inline-block; margin-top: 14px; font-size: 12px; font-weight: 600; color: var(--indigo-700); background: var(--indigo-50); padding: 4px 10px; border-radius: 20px; }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; counter-reset: step; }
.step { position: relative; padding-top: 8px; }
.step__num {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, var(--indigo-600), var(--teal-500));
  color: #fff; font-weight: 800; display: grid; place-items: center; margin-bottom: 16px; box-shadow: var(--shadow-sm);
}
.step h3 { font-size: 18px; margin-bottom: 8px; }
.step p { color: var(--slate-600); font-size: 14.5px; }

/* ---------- Split / security ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.checklist { list-style: none; display: grid; gap: 14px; }
.checklist li { display: flex; gap: 12px; align-items: flex-start; font-size: 15.5px; color: var(--slate-700); }
.checklist li svg { flex: none; width: 22px; height: 22px; color: var(--green-500); margin-top: 1px; }
.checklist li b { color: var(--slate-900); }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--indigo-700), var(--indigo-600) 45%, var(--teal-500));
  color: #fff; border-radius: 20px; padding: 56px 48px; text-align: center; box-shadow: var(--shadow-lg);
}
.cta-band h2 { color: #fff; font-size: clamp(26px, 3.5vw, 36px); margin-bottom: 14px; }
.cta-band p { color: rgba(255,255,255,.9); font-size: 18px; max-width: 560px; margin: 0 auto 28px; }
.cta-band .hero__actions { justify-content: center; }

/* ---------- Footer ---------- */
.site-footer { background: var(--slate-900); color: var(--slate-300); padding: 64px 0 32px; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.footer__brand .brand { color: #fff; margin-bottom: 14px; }
.footer__brand p { color: var(--slate-400); font-size: 14px; max-width: 280px; }
.footer h4 { color: #fff; font-size: 14px; text-transform: uppercase; letter-spacing: .06em; margin-bottom: 16px; }
.footer ul { list-style: none; display: grid; gap: 10px; }
.footer a { color: var(--slate-400); font-size: 14.5px; }
.footer a:hover { color: #fff; }
.footer__bottom { border-top: 1px solid var(--slate-800); padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 13.5px; color: var(--slate-500); }
.footer__bottom a { color: var(--slate-400); }

/* ---------- Legal / doc pages ---------- */
.page-hero { background: var(--slate-50); border-bottom: 1px solid var(--slate-200); padding: 64px 0 48px; }
.page-hero h1 { font-size: clamp(30px, 4vw, 44px); margin-bottom: 12px; }
.page-hero p { color: var(--slate-600); font-size: 17px; }
.page-hero .updated { margin-top: 14px; font-size: 14px; color: var(--slate-500); }

.doc { padding: 56px 0 80px; }
.doc__wrap { display: grid; grid-template-columns: 240px 1fr; gap: 56px; align-items: start; }
.doc__toc { position: sticky; top: 92px; }
.doc__toc h4 { font-size: 12px; text-transform: uppercase; letter-spacing: .07em; color: var(--slate-500); margin-bottom: 14px; }
.doc__toc ul { list-style: none; display: grid; gap: 9px; border-left: 2px solid var(--slate-200); padding-left: 16px; }
.doc__toc a { color: var(--slate-600); font-size: 14px; }
.doc__toc a:hover { color: var(--indigo-600); }
.doc__body { max-width: 760px; }
.doc__body h2 { font-size: 24px; margin: 40px 0 14px; scroll-margin-top: 92px; }
.doc__body h2:first-child { margin-top: 0; }
.doc__body h3 { font-size: 18px; margin: 26px 0 10px; }
.doc__body p { margin-bottom: 16px; color: var(--slate-700); }
.doc__body ul, .doc__body ol { margin: 0 0 18px 22px; }
.doc__body li { margin-bottom: 9px; }
.doc__body table { width: 100%; border-collapse: collapse; margin: 18px 0 24px; font-size: 14.5px; }
.doc__body th, .doc__body td { border: 1px solid var(--slate-200); padding: 10px 14px; text-align: left; vertical-align: top; }
.doc__body th { background: var(--slate-50); color: var(--slate-900); font-weight: 600; }
.callout { background: var(--indigo-50); border: 1px solid #c7d2fe; border-radius: 12px; padding: 18px 20px; margin: 22px 0; font-size: 14.5px; color: var(--slate-700); }
.callout b { color: var(--indigo-700); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.info-card { background: var(--white); border: 1px solid var(--slate-200); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow-sm); }
.info-row { display: flex; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--slate-100); }
.info-row:last-child { border-bottom: none; }
.info-row .ic { width: 42px; height: 42px; border-radius: 10px; background: var(--indigo-50); color: var(--indigo-600); display: grid; place-items: center; flex: none; }
.info-row .ic svg { width: 21px; height: 21px; }
.info-row b { display: block; color: var(--slate-900); font-size: 15px; }
.info-row span, .info-row a { color: var(--slate-600); font-size: 14.5px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; font-weight: 600; color: var(--slate-800); margin-bottom: 7px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 11px 14px; border: 1px solid var(--slate-300); border-radius: var(--radius-sm);
  font-family: inherit; font-size: 15px; color: var(--slate-800); background: var(--white); transition: border-color .15s, box-shadow .15s;
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--indigo-500); box-shadow: 0 0 0 3px rgba(99,102,241,.15); }
.field textarea { resize: vertical; min-height: 130px; }

/* ---------- Misc ---------- */
.pageblock { padding: 64px 0; }
.prose { max-width: 760px; }
.prose h2 { font-size: 26px; margin: 36px 0 14px; }
.prose p { margin-bottom: 16px; color: var(--slate-700); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.value-card { background: var(--white); border: 1px solid var(--slate-200); border-radius: var(--radius); padding: 26px; }
.value-card h3 { font-size: 18px; margin-bottom: 8px; }
.value-card p { color: var(--slate-600); font-size: 14.5px; }

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .features, .steps { grid-template-columns: repeat(2, 1fr); }
  .split, .contact-grid, .grid-2 { grid-template-columns: 1fr; gap: 36px; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .doc__wrap { grid-template-columns: 1fr; }
  .doc__toc { position: static; display: none; }
}
@media (max-width: 640px) {
  .section { padding: 64px 0; }
  .nav__links, .nav__cta .btn--ghost { display: none; }
  .nav__toggle { display: flex; }
  .nav__links.open {
    display: flex; position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; gap: 0; background: #fff; border-bottom: 1px solid var(--slate-200); padding: 8px 0;
  }
  .nav__links.open li { width: 100%; }
  .nav__links.open a { display: block; padding: 13px 24px; }
  .features, .steps, .mock__stats { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .cta-band { padding: 40px 24px; }
  .mock__stats { grid-template-columns: repeat(3, 1fr); }
}