:root { --bg: #fafaf7; --ink: #1f1f1a; --muted: #6b6b60; --line: #e4e4dc; --accent: #2f6f4f; --pill: #eef4f0; --card: #fff; --mono: ui-monospace, SFMono-Regular, Menlo, monospace; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.5 system-ui, sans-serif; overflow-x: hidden; }
.wrap { max-width: 760px; margin: 0 auto; padding: 24px 20px 80px; }
h1 { font-size: 22px; margin: 0 0 8px; }
p.lede { color: var(--muted); margin: 0 0 20px; }
a { color: var(--accent); }
button { background: var(--accent); color: #fff; border: 0; border-radius: 8px; padding: 10px 16px; font-size: 15px; font-family: inherit; cursor: pointer; }
button:disabled { opacity: 0.6; cursor: default; }
button.secondary { background: transparent; color: var(--ink); border: 1px solid var(--line); border-radius: 6px; padding: 3px 10px; font-size: 13px; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.label-row { display: flex; align-items: center; gap: 8px; }
.label-row .badge { margin-left: 0; }
code, pre { font-family: var(--mono); font-size: 13px; }
pre { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 12px; overflow-x: auto; white-space: pre-wrap; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin-top: 16px; }
.badge { display: inline-block; background: var(--pill); color: var(--accent); border-radius: 999px; padding: 2px 10px; font-size: 12px; margin-left: 8px; }
.members { color: var(--muted); font-size: 13px; margin: 6px 0 14px; }
.msg { display: grid; grid-template-columns: 110px 1fr; gap: 10px; padding: 8px 0; border-top: 1px solid var(--line); }
.msg .from { font-weight: 600; word-break: break-all; }
.msg.system .from, .msg.system .text { color: var(--muted); font-style: italic; }
.msg .text { white-space: pre-wrap; word-break: break-word; }
.msg .att a { display: inline-block; margin-top: 4px; font-size: 13px; }
.hidden { display: none; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* ---------- landing page ---------- */

.landing .shell { max-width: 880px; margin: 0 auto; padding: 0 20px; width: 100%; }
.landing h1, .landing h2, .landing h3 { letter-spacing: -0.01em; }

.nav { border-bottom: 1px solid var(--line); }
.nav-inner { display: flex; align-items: center; gap: 14px; padding-top: 12px; padding-bottom: 12px; }
.wordmark { font-weight: 650; font-size: 16px; color: var(--ink); text-decoration: none; }
.nav-links { display: flex; gap: 16px; margin-right: auto; font-size: 14px; }
.nav-links a { color: var(--muted); text-decoration: none; }
.nav-links a:hover { color: var(--ink); }

.btn { display: inline-block; border: 1px solid transparent; border-radius: 8px; padding: 10px 16px; font: 600 14px/1.2 system-ui, sans-serif; cursor: pointer; text-decoration: none; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--muted); }
.btn-sm { padding: 8px 12px; font-size: 13px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; }
.btn-row-center { justify-content: center; }

.hero { text-align: center; padding-top: 56px; padding-bottom: 28px; }
.hero h1 { font-size: clamp(28px, 6.5vw, 38px); line-height: 1.14; font-weight: 650; margin: 0 auto 10px; max-width: 22ch; }
.hero-lede { color: var(--muted); font-size: 16px; margin: 0 auto 20px; max-width: 46ch; }
/* Reserve the room the optional link field needs so revealing it shifts nothing below. */
.actions { min-height: 176px; }
.actions .btn-row { justify-content: center; }
.fine { color: var(--muted); font-size: 12px; margin: 14px 0 0; }

.link-form { margin: 14px auto 0; max-width: 420px; text-align: left; }
.link-form label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.link-row { display: flex; gap: 8px; }
.link-form input { flex: 1; min-width: 0; font: 13px/1.4 var(--mono); color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 9px 10px; }
.form-error { min-height: 18px; margin: 6px 0 0; font-size: 13px; color: #9b2c2c; }

.result { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; text-align: left; }
.result pre { margin: 8px 0 14px; }
.result .label-row { flex-wrap: wrap; }

.replay-section { padding-bottom: 30px; }
.replay { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; font: 13px/1.45 var(--mono); }
.replay-head { display: flex; flex-wrap: wrap; gap: 6px 14px; justify-content: space-between; color: var(--muted); font-size: 11.5px; padding-bottom: 8px; }
.replay-meta { color: var(--accent); }
.replay .msg { grid-template-columns: 62px 1fr; gap: 8px; padding: 5px 0; }
.replay .msg .from, .replay .msg .text { font-size: 12.5px; }
.replay .msg .code { margin: 5px 0 0; background: var(--pill); border: 0; border-radius: 6px; padding: 6px 8px; font-size: 12px; overflow-x: auto; }
.replay .msg[data-pending="1"] { opacity: 0; }
.replay .msg[data-shown="1"] { animation: replay-in 0.45s ease both; }
@keyframes replay-in { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
.logos { color: var(--muted); font-size: 13px; margin: 12px 0 0; }
.logos b { color: var(--ink); font-weight: 600; }

.sec { border-top: 1px solid var(--line); padding: 34px 0; }
.sec h2 { font-size: 22px; font-weight: 650; margin: 0 0 8px; }
.kicker { font: 600 11px system-ui, sans-serif; color: var(--accent); text-transform: uppercase; letter-spacing: 0.08em; margin: 0 0 8px; }
.muted { color: var(--muted); margin: 0 0 8px; }
.muted.small { font-size: 13px; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 18px 0 0; padding: 0; list-style: none; }
.step { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px; }
.step-n { font: 600 12px var(--mono); color: var(--accent); margin: 0 0 6px; }
.step h3 { font-size: 15px; margin: 0 0 6px; }
.step p { margin: 0; color: var(--muted); font-size: 13.5px; }

.paste-example { background: var(--pill); border: 1px dashed var(--accent); border-radius: 8px; padding: 10px 12px; margin-top: 18px; }
.paste-label { display: flex; align-items: center; justify-content: space-between; gap: 8px; font: 600 11px system-ui, sans-serif; color: var(--accent); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 6px; }
.paste-label .secondary { border-color: var(--accent); color: var(--accent); text-transform: none; letter-spacing: 0; }
#paste-example-text { margin: 0; font: 12.5px/1.5 var(--mono); word-break: break-word; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
.code-block { background: var(--ink); border-radius: 8px; padding: 12px 14px; overflow-x: auto; }
.code-block pre { background: none; border: 0; border-radius: 0; padding: 0; margin: 0; white-space: pre; }
.code-block code { color: #e8e8e0; font-size: 12px; line-height: 1.55; }
.code-block .c { color: #8a8a80; }

.trust { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 24px; margin: 14px 0 0; padding: 0; list-style: none; }
.trust li { position: relative; padding-left: 20px; font-size: 13.5px; color: var(--muted); }
.trust li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
.note { background: #fff8e6; border: 1px solid #f0dca8; border-radius: 8px; padding: 10px 12px; margin: 16px 0 0; font-size: 13px; color: #5a4a1a; }

.cta { background: var(--card); text-align: center; }
.cta .muted { margin-bottom: 16px; }

.foot { border-top: 1px solid var(--line); }
.foot-inner { display: flex; flex-wrap: wrap; gap: 8px; justify-content: space-between; color: var(--muted); font-size: 12.5px; padding-top: 16px; padding-bottom: 16px; }
.foot-links a { color: var(--muted); text-decoration: none; }
.foot-links a:hover { color: var(--ink); text-decoration: underline; }

@media (max-width: 720px) {
  .steps, .trust, .two-col { grid-template-columns: 1fr; }
  .hero { padding-top: 36px; }
  .actions { min-height: 0; }
  .nav-links { gap: 12px; font-size: 13px; }
  .code-block pre { white-space: pre; }
}

@media (max-width: 420px) {
  .nav-inner { flex-wrap: wrap; }
  .replay .msg { grid-template-columns: 1fr; gap: 2px; }
}

@media (prefers-reduced-motion: reduce) {
  .replay .msg[data-shown="1"] { animation: none; }
  html { scroll-behavior: auto; }
}