*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 168px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font: 400 16px/1.5 var(--font-sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3, p, dl, dd, ol { margin: 0; padding: 0; }
ol { list-style: none; }
svg { fill: currentColor; }
:focus-visible { outline: 2px solid var(--c-accent); outline-offset: 2px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip { position: absolute; left: 8px; top: -64px; z-index: 50; background: var(--c-accent); color: var(--c-on-accent); padding: 12px 16px; border-radius: var(--r-sm); }
.skip:focus { top: 8px; }

/* ---------- shell ---------- */
.shell { min-height: 100vh; }
.side { display: none; }
.main { min-width: 0; padding-bottom: 88px; }
main { padding: 0 16px; max-width: 1080px; margin: 0 auto; }

/* ---------- brand ---------- */
.brand { display: inline-flex; align-items: center; gap: 10px; min-height: 48px; font-weight: 650; font-size: 18px; letter-spacing: -0.01em; }
.brand img { display: block; border-radius: 8px; }

/* ---------- top bar ---------- */
.top {
  position: sticky; top: 0; z-index: 30;
  background: var(--c-scrim);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--c-line);
  padding: 4px 16px 12px;
}
.top-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.socials { display: flex; gap: 4px; margin-left: auto; }
.social {
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border-radius: var(--r-md);
  color: var(--c-text);
  transition: transform var(--t-fast) var(--ease);
  position: relative;
}
.social::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  background: var(--c-surface-hi); opacity: 0; transition: opacity var(--t-fast) var(--ease);
}
.social svg { position: relative; }
a.social:hover { transform: translateY(-2px); }
a.social:hover::before { opacity: 1; }
.social.is-inert { color: var(--c-mute); cursor: not-allowed; }

/* ---------- CA slot ---------- */
.ca {
  position: relative; display: flex; align-items: center; gap: 12px;
  max-width: 1080px; margin: 4px auto 0;
  padding: 10px 10px 10px 14px;
  background: var(--c-surface); border: 1px solid var(--c-line); border-radius: var(--r-lg);
  isolation: isolate;
}
.ca::before {
  content: ""; position: absolute; inset: -1px; z-index: -1; border-radius: inherit;
  box-shadow: 0 0 0 1px var(--c-line-hi), 0 0 40px var(--c-glow);
  opacity: 0; transform: scale(0.98);
  transition: opacity var(--t-med) var(--ease), transform var(--t-med) var(--ease);
}
.ca[data-state="live"]::before { opacity: 1; transform: scale(1); }
.ca[data-state="live"]:hover::before { opacity: 1; transform: scale(1.012); }
.ca.bloom::before { animation: bloom var(--t-slow) var(--ease); }
.ca-label {
  flex: none; font: 650 12px/1 var(--font-sans); letter-spacing: 0.12em;
  color: var(--c-text-2); border: 1px solid var(--c-line-hi); border-radius: 999px; padding: 6px 10px;
}
.ca-btn {
  flex: 1; min-width: 0; min-height: 48px; background: none; border: 0; color: inherit; text-align: left;
  font: 500 clamp(17px, 2.4vw, 28px)/1.25 var(--font-mono); letter-spacing: -0.01em;
  padding: 4px 0; cursor: pointer;
}
.ca-btn:disabled { cursor: default; color: var(--c-mute); font-family: var(--font-sans); font-weight: 500; }
.ca-text { display: block; overflow-wrap: anywhere; word-break: break-all; }
.ca-text .ch { display: inline-block; animation: chIn var(--t-med) var(--ease) backwards; animation-delay: var(--d, 0ms); }
.ca-copy {
  flex: none; display: grid; place-items: center; width: 48px; height: 48px; border-radius: var(--r-md);
  background: var(--c-accent); color: var(--c-on-accent);
  transition: transform var(--t-fast) var(--ease);
}
.ca-copy svg { width: 22px; height: 22px; }
.ca[data-state="absent"] .ca-copy { display: none; }
.ca[data-state="live"] .ca-btn:hover ~ .ca-copy, .ca[data-state="live"] .ca-copy:hover { transform: translateY(-2px); }
.ca-toast {
  position: absolute; right: 12px; top: -14px; padding: 6px 12px; border-radius: 999px;
  background: var(--c-accent); color: var(--c-on-accent); font: 600 13px/1 var(--font-sans);
  opacity: 0; transform: translateY(6px); pointer-events: none;
  transition: opacity var(--t-med) var(--ease), transform var(--t-med) var(--ease);
}
.ca-toast.show { opacity: 1; transform: translateY(0); }

/* ---------- hero ---------- */
.hero { padding: 48px 0 24px; text-align: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--c-text-2); font-size: 14px; font-weight: 550; letter-spacing: 0.02em; }
h1 { margin-top: 16px; font-size: clamp(36px, 8vw, 68px); line-height: 1.04; letter-spacing: -0.035em; font-weight: 700; }
.lede { max-width: 560px; margin: 20px auto 0; color: var(--c-text-2); font-size: clamp(16px, 2.2vw, 18px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 28px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 48px; min-width: 48px; padding: 0 22px;
  border-radius: 999px; border: 1px solid var(--c-line-hi); background: transparent; color: var(--c-text);
  font: 600 15px/1 var(--font-sans); cursor: pointer; position: relative;
  transition: transform var(--t-fast) var(--ease);
}
.btn::after { content: ""; position: absolute; inset: 0; border-radius: inherit; box-shadow: 0 0 28px var(--c-glow); opacity: 0; transition: opacity var(--t-fast) var(--ease); pointer-events: none; }
.btn:hover { transform: translateY(-2px); }
.btn:hover::after { opacity: 1; }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--c-accent); color: var(--c-on-accent); border-color: var(--c-accent); }

.dot { position: relative; width: 8px; height: 8px; border-radius: 50%; background: var(--c-accent); display: inline-block; }
.dot::after { content: ""; position: absolute; inset: 0; border-radius: 50%; background: var(--c-accent); animation: ping 2s var(--ease) infinite; }

/* ---------- search ---------- */
.search {
  position: relative; display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  max-width: 640px; margin: 8px auto 40px; padding: 6px 6px 6px 16px;
  background: var(--c-surface); border: 1px solid var(--c-line); border-radius: 999px;
}
.search > svg { width: 20px; height: 20px; color: var(--c-text-3); flex: none; }
.search input {
  flex: 1; min-width: 0; min-height: 48px; background: none; border: 0; outline: 0; color: var(--c-text);
  font: 400 16px/1 var(--font-sans);
}
.search input::placeholder { color: var(--c-text-3); }
.search:focus-within { border-color: var(--c-line-hi); }
.search .btn { padding: 0 18px; }
.search-msg { position: absolute; left: 20px; top: 100%; margin-top: 8px; font-size: 13px; color: var(--c-text-2); }

/* ---------- sections ---------- */
.block { margin-bottom: 40px; }
.block-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; min-height: 32px; }
h2 { font-size: 20px; letter-spacing: -0.02em; font-weight: 650; }
.hint { color: var(--c-text-3); font-size: 13px; }
.live { display: inline-flex; align-items: center; gap: 8px; color: var(--c-text-2); font-size: 13px; font-weight: 550; }
.live[data-state="off"] .dot, .live[data-state="off"] .dot::after { background: var(--c-text-3); animation: none; }

.grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
.card {
  position: relative; isolation: isolate; padding: 18px;
  background: var(--c-surface); border: 1px solid var(--c-line); border-radius: var(--r-lg);
  transition: transform var(--t-med) var(--ease);
}
.card::before {
  content: ""; position: absolute; inset: -1px; z-index: -1; border-radius: inherit;
  box-shadow: 0 0 0 1px var(--c-line-hi), 0 10px 40px var(--c-glow-soft);
  opacity: 0; transition: opacity var(--t-med) var(--ease);
}
.card:hover { transform: translateY(-3px); }
.card:hover::before { opacity: 1; }
.card h3 { font-size: 13px; font-weight: 550; color: var(--c-text-2); letter-spacing: 0.02em; }
.val { margin-top: 8px; font: 650 clamp(26px, 6vw, 32px)/1.1 var(--font-sans); letter-spacing: -0.02em; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.sub { margin-top: 6px; font-size: 13px; color: var(--c-text-3); }
.tick { animation: tick var(--t-med) var(--ease); }

.split { display: grid; gap: 12px; margin-bottom: 40px; }
.panel { padding: 18px; background: var(--c-surface); border: 1px solid var(--c-line); border-radius: var(--r-lg); min-width: 0; }
.feed li { display: grid; grid-template-columns: 1fr auto; gap: 2px 12px; align-items: center; min-height: 56px; padding: 8px 0; border-top: 1px solid var(--c-line); }
.feed li:first-child { border-top: 0; }
.feed a { display: contents; }
.feed .fb { font: 600 15px/1.2 var(--font-mono); font-variant-numeric: tabular-nums; }
.feed .fa { font-size: 13px; color: var(--c-text-2); text-align: right; font-variant-numeric: tabular-nums; }
.feed .fm { grid-column: 1 / -1; font-size: 13px; color: var(--c-text-3); }
.feed li.new { animation: rowIn var(--t-med) var(--ease); }
.feed-empty { color: var(--c-text-3); font-size: 14px; }
.feed a:hover .fb { text-decoration: underline; text-underline-offset: 3px; }

.kv > div { display: flex; justify-content: space-between; gap: 16px; align-items: center; min-height: 48px; padding: 0; border-top: 1px solid var(--c-line); }
.kv > div:first-child { border-top: 0; }
.kv dt { color: var(--c-text-2); font-size: 14px; flex: none; }
.kv dd { font: 500 14px/1.3 var(--font-mono); text-align: right; overflow-wrap: anywhere; min-width: 0; }
.kv a { display: inline-flex; align-items: center; min-height: 48px; text-decoration: underline; text-underline-offset: 3px; }

.steps { display: grid; grid-template-columns: 1fr; gap: 12px; }
.steps .card { padding: 20px; }
.num { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--c-accent); color: var(--c-on-accent); font: 700 14px/1 var(--font-sans); }
.steps h3 { margin-top: 14px; font-size: 16px; color: var(--c-text); letter-spacing: -0.01em; }
.steps p { margin-top: 6px; font-size: 14px; color: var(--c-text-2); }

.foot { max-width: 1080px; margin: 0 auto; padding: 24px 16px 8px; border-top: 1px solid var(--c-line); color: var(--c-text-3); font-size: 13px; }

/* ---------- mobile tab bar ---------- */
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 30; display: grid; grid-template-columns: repeat(4, 1fr);
  background: var(--c-scrim); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border-top: 1px solid var(--c-line); padding-bottom: env(safe-area-inset-bottom);
}
.tabbar a { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; min-height: 56px; font-size: 11px; font-weight: 550; color: var(--c-text-3); }
.tabbar svg { width: 22px; height: 22px; }
.tabbar a.on { color: var(--c-text); }

/* ---------- entrance ---------- */
[data-enter] { animation: enter var(--t-slow) var(--ease) backwards; }
[data-i="1"] { animation-delay: 60ms; } [data-i="2"] { animation-delay: 120ms; } [data-i="3"] { animation-delay: 180ms; }
[data-i="4"] { animation-delay: 240ms; } [data-i="5"] { animation-delay: 300ms; } [data-i="6"] { animation-delay: 360ms; }
[data-i="7"] { animation-delay: 410ms; } [data-i="8"] { animation-delay: 460ms; } [data-i="9"] { animation-delay: 510ms; }
[data-i="10"] { animation-delay: 560ms; } [data-i="11"] { animation-delay: 610ms; } [data-i="12"] { animation-delay: 660ms; }

@keyframes enter { from { opacity: 0; transform: translateY(14px); } }
@keyframes chIn { from { opacity: 0; transform: translateY(6px); } }
@keyframes tick { from { opacity: 0.25; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes rowIn { from { opacity: 0; transform: translateX(-10px); } to { opacity: 1; transform: none; } }
@keyframes ping { 0% { opacity: 0.6; transform: scale(1); } 80%, 100% { opacity: 0; transform: scale(2.6); } }
@keyframes bloom { 0% { opacity: 0; transform: scale(0.94); } 45% { opacity: 1; transform: scale(1.03); } 100% { opacity: 1; transform: scale(1); } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ---------- breakpoints ---------- */
@media (min-width: 560px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  html { scroll-padding-top: 150px; }
  .side {
    display: flex; flex-direction: column; position: fixed; inset: 0 auto 0 0; width: 232px; z-index: 20;
    padding: 16px 12px; background: var(--c-bg-raised); border-right: 1px solid var(--c-line);
  }
  .side .brand { padding: 0 10px; margin-bottom: 12px; }
  .brand-m { display: none; }
  .top-row { justify-content: flex-end; }
  .main { margin-left: 232px; padding-bottom: 0; }
  .nav { display: grid; gap: 4px; }
  .nav a { display: flex; align-items: center; gap: 12px; min-height: 48px; padding: 0 12px; border-radius: var(--r-md); color: var(--c-text-2); font-weight: 550; font-size: 15px; position: relative; transition: transform var(--t-fast) var(--ease); }
  .nav a::before { content: ""; position: absolute; inset: 0; border-radius: inherit; background: var(--c-surface-hi); opacity: 0; transition: opacity var(--t-fast) var(--ease); }
  .nav a > * { position: relative; }
  .nav svg { width: 20px; height: 20px; position: relative; }
  .nav a:hover { transform: translateX(2px); color: var(--c-text); }
  .nav a:hover::before, .nav a.on::before { opacity: 1; }
  .nav a.on { color: var(--c-text); }
  .side-foot { margin-top: auto; display: grid; padding: 0 10px; font-size: 13px; color: var(--c-text-3); }
  .side-foot strong { color: var(--c-text); font-weight: 600; }
  .tabbar { display: none; }
  .grid { grid-template-columns: repeat(3, 1fr); }
  .steps { grid-template-columns: repeat(4, 1fr); }
  .split { grid-template-columns: 1.4fr 1fr; }
  .hero { padding-top: 64px; }
}