:root {
  --ink: #14201d; --muted: #5d6b67; --line: #dde6e2; --bg: #f5f8f7; --panel: #fff;
  --green: #0f766e; --green-d: #0b5a53;
  --dark: #081210; --dark-2: #0d1d18; --dark-line: #1d332c;
  --mint: #5eead4; --mint-2: #2dd4bf; --on-dark: #cfe6df; --on-dark-dim: #8aa79e;
  --code-bg: #07100d; --blue: #2563eb; --danger: #b42318;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; color: var(--ink); background: var(--bg); overflow-wrap: anywhere;
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
.wrap { width: min(1040px, calc(100% - 40px)); margin: 0 auto; }
.eyebrow { font-family: var(--mono); text-transform: uppercase; letter-spacing: 0.18em;
  font-size: 0.74rem; font-weight: 700; color: var(--mint-2); margin: 0 0 14px; }

/* ---- top nav (dark) ---- */
.topnav { position: sticky; top: 0; z-index: 30; background: rgba(8,18,16,0.86);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--dark-line); }
.topnav .wrap { display: flex; align-items: center; gap: 16px; min-height: 58px; }
.brand { display: inline-flex; align-items: center; gap: 9px; font-weight: 800; color: #fff; flex-shrink: 0; }
.brand:hover { text-decoration: none; }
.brand-mark { width: 28px; height: 28px; border-radius: 8px; font-family: var(--mono);
  background: linear-gradient(135deg, var(--mint), var(--green)); color: #06120f;
  display: inline-grid; place-items: center; font-weight: 900; }
.navlinks { display: flex; gap: 2px; margin-left: auto; }
.navlinks a { color: var(--on-dark); font-weight: 600; font-size: 0.9rem; padding: 7px 11px;
  border-radius: 8px; white-space: nowrap; }
.navlinks a:hover { background: rgba(94,234,212,0.12); color: #fff; text-decoration: none; }
.navlinks a.active { background: var(--mint); color: #06120f; }

/* ---- hero (dark, hex/dot motif) ---- */
.hero { position: relative; overflow: hidden; color: #fff;
  background:
    radial-gradient(1100px 380px at 78% -10%, rgba(45,212,191,0.16), transparent 60%),
    radial-gradient(circle at 1px 1px, rgba(120,160,150,0.12) 1px, transparent 0) 0 0/22px 22px,
    linear-gradient(180deg, var(--dark-2), var(--dark));
  border-bottom: 1px solid var(--dark-line); padding: 64px 0 56px; }
.hero h1 { font-size: clamp(2.1rem, 6vw, 3.3rem); line-height: 1.05; margin: 0 0 16px; letter-spacing: -0.025em;
  color: #fff; }
.hero h1 .hl { color: var(--mint); }
.hero .lede { font-size: clamp(1.05rem, 2.4vw, 1.22rem); color: var(--on-dark); max-width: 720px; }
.hero .mono-tag { font-family: var(--mono); color: var(--on-dark-dim); font-size: 0.82rem; margin-top: 18px; }

/* ---- buttons ---- */
.btns { display: flex; gap: 12px; flex-wrap: wrap; margin: 26px 0 4px; }
.btn { display: inline-block; padding: 11px 18px; border-radius: 10px; font-weight: 700; font-size: 0.96rem; }
.btn-primary { background: var(--mint); color: #06120f; }
.btn-primary:hover { background: #7af0dd; text-decoration: none; }
.btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.28); }
.btn-ghost:hover { border-color: var(--mint); color: var(--mint); text-decoration: none; }
main .btn-primary { background: var(--green); color: #fff; }
main .btn-primary:hover { background: var(--green-d); }
main .btn-ghost { color: var(--ink); border-color: var(--line); }
main .btn-ghost:hover { border-color: var(--green); color: var(--green); }

/* ---- USP band (homepage) ---- */
.usps { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 14px; }
.usp { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 20px;
  position: relative; transition: border-color .15s, transform .15s; }
.usp:hover { border-color: var(--mint-2); transform: translateY(-2px); }
.usp .ico { width: 36px; height: 36px; border-radius: 9px; display: grid; place-items: center;
  background: var(--green-soft, #dff5ef); color: var(--green); margin-bottom: 12px; }
.usp .ico svg { width: 20px; height: 20px; }
.usp .kicker { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--mint-2); font-weight: 700; }
.usp h3 { margin: 4px 0 6px; font-size: 1.12rem; }
.usp p { margin: 0; color: var(--muted); font-size: 0.95rem; }

/* ---- homepage demo ("html video") ---- */
.demo { background: var(--dark); border-bottom: 1px solid var(--dark-line); padding: 40px 0 46px; }
.demo .eyebrow { color: var(--mint-2); }
.demo h2 { color: #fff; border: 0; padding: 0; margin: 0 0 6px; }
.demo .sub { color: var(--on-dark-dim); margin: 0 0 22px; max-width: 680px; }
.demo .sub a { color: var(--mint-2); }
.demo-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 18px; align-items: start; }
.win { border-radius: 12px; overflow: hidden; border: 1px solid var(--dark-line);
  box-shadow: 0 22px 54px rgba(0,0,0,0.4); }
.win-bar { display: flex; align-items: center; gap: 7px; padding: 9px 12px; background: #0e1f1a;
  border-bottom: 1px solid var(--dark-line); }
.dot { width: 11px; height: 11px; border-radius: 50%; }
.dot.r { background: #ff5f56; } .dot.y { background: #ffbd2e; } .dot.g { background: #27c93f; }
.win-title { margin-left: 8px; color: var(--on-dark-dim); font: 0.76rem var(--mono); }
.term { background: #0a1714; }
.term-body { padding: 14px 16px; height: 320px; overflow: hidden; font: 0.84rem/1.75 var(--mono);
  color: #d6f0e8; white-space: pre-wrap; word-break: break-word; }
.term-body .p { color: var(--mint-2); }
.term-body .ok { color: #6ee7b7; }
.term-body .cmt { color: var(--on-dark-dim); }
.cursor { display: inline-block; width: 8px; height: 1.05em; background: var(--mint); vertical-align: -2px;
  margin-left: 1px; animation: blink 1.05s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }
.browser { background: #fff; }
.browser .win-bar { background: #eef2f1; border-color: var(--line); }
.browser .win-title { color: #5d6b67; }
.browser-view { position: relative; aspect-ratio: 1280 / 900; background: #f6f8f7; }
.browser-view img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  object-position: top center; opacity: 0; transition: opacity 0.5s ease; }
.browser-view img.show { opacity: 1; }
@media (max-width: 820px) { .demo-grid { grid-template-columns: 1fr; } .term-body { height: 260px; } }
@media (prefers-reduced-motion: reduce) { .cursor { animation: none; } }

/* ---- content ---- */
main { padding: 14px 0 10px; }
section { margin-bottom: 10px; }
h2 { font-size: 1.55rem; margin: 46px 0 8px; color: #0d3d35; padding-top: 14px; border-top: 1px solid var(--line); }
section:first-of-type h2:first-child, main > section:first-child h2 { border-top: 0; padding-top: 0; }
h3 { font-size: 1.14rem; margin: 26px 0 4px; }
.lede { font-size: 1.1rem; color: var(--muted); max-width: 760px; }
.muted { color: var(--muted); }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; margin: 18px 0; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; }
.card h3 { margin: 0 0 6px; } .card p { margin: 0; color: var(--muted); font-size: 0.95rem; }
.card .tag { display: inline-block; margin-top: 12px; font-family: var(--mono); font-size: 0.76rem; color: var(--green); }
a.card:hover { border-color: var(--green); text-decoration: none; }

pre { background: var(--code-bg); color: #d6f0e8; border: 1px solid var(--dark-line); border-radius: 12px;
  padding: 16px; overflow-x: auto; font: 0.86rem/1.6 var(--mono); }
pre[data-label]::before { content: attr(data-label); display: block; color: var(--on-dark-dim);
  font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 8px; }
code { font-family: var(--mono); }
p code, li code, td code { background: #e8f1ee; padding: 1px 6px; border-radius: 6px; font-size: 0.9em; }
table { width: 100%; border-collapse: collapse; margin: 14px 0; background: #fff; border: 1px solid var(--line);
  border-radius: 10px; overflow: hidden; font-size: 0.93rem; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: #eef4f2; font-weight: 700; } tr:last-child td { border-bottom: 0; }
.note { background: #e8f6f1; border-left: 4px solid var(--green); border-radius: 8px; padding: 12px 16px; margin: 16px 0; }
.warn { background: #fff7ed; border-left: 4px solid #c2410c; border-radius: 8px; padding: 12px 16px; margin: 16px 0; }
.flow { background: var(--code-bg); color: #bfe6da; border: 1px solid var(--dark-line); border-radius: 12px;
  padding: 16px; overflow-x: auto; font: 0.82rem/1.5 var(--mono); white-space: pre; }
.step { display: inline-block; min-width: 26px; height: 26px; border-radius: 999px; background: var(--green);
  color: #fff; text-align: center; line-height: 26px; font-size: 0.85rem; font-weight: 800; margin-right: 8px; }
ul.checks { list-style: none; padding-left: 0; }
ul.checks li { padding-left: 26px; position: relative; margin: 7px 0; }
ul.checks li::before { content: "▸"; color: var(--green); position: absolute; left: 4px; font-weight: 900; }

figure { margin: 16px 0 6px; }
figure img { width: 100%; border: 1px solid var(--line); border-radius: 12px;
  box-shadow: 0 14px 34px rgba(8,18,16,0.14); display: block; }
figcaption { color: var(--muted); font-size: 0.9rem; margin-top: 8px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

footer { background: var(--dark); color: var(--on-dark-dim); margin-top: 48px; padding: 26px 0 46px;
  border-top: 1px solid var(--dark-line); font-size: 0.9rem; }
footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
footer a { color: var(--mint-2); }

/* ---- responsive ---- */
@media (max-width: 820px) {
  .topnav .wrap { flex-direction: column; align-items: stretch; gap: 6px; padding-top: 9px; padding-bottom: 7px; }
  .brand { height: 30px; }
  .navlinks { margin-left: 0; overflow-x: auto; flex-wrap: nowrap; gap: 2px;
    -webkit-overflow-scrolling: touch; scrollbar-width: none; padding-bottom: 2px; }
  .navlinks::-webkit-scrollbar { display: none; }
  .hero { padding: 44px 0 38px; }
}
@media (max-width: 560px) {
  .grid2 { grid-template-columns: 1fr; }
  table { display: block; overflow-x: auto; white-space: nowrap; }
  th, td { white-space: normal; }
}