/* Page styles. Phone first; wider layouts from 760px and 1100px. */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 16px/1.5 var(--font);
  font-feature-settings: "ss01";
  overflow-x: hidden;
}
img, svg { display: block; }
a { color: inherit; }
button { font: inherit; color: inherit; }
.mono { font-family: var(--mono); font-feature-settings: "zero" 0; }
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--spo2-ink); outline-offset: 3px; border-radius: 6px; }

/* ------------------------------------------------------------ top bar */
.topbar {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  display: flex; align-items: center; gap: 10px;
  height: 56px; padding: 0 16px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; min-width: 0; }
.brand .mark { width: 30px; height: 30px; flex: none; }
.brand > span { min-width: 0; overflow: hidden; }
.brand b { font-size: 15px; font-weight: 700; letter-spacing: -0.01em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.brand small { display: block; font: 500 10.5px/1.1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.pill {
  margin-left: auto; flex: none;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 11px; border-radius: 999px;
  font: 600 11px/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase;
  background: var(--surface); border: 1px solid var(--line); color: var(--ink-2);
}
.pill .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ecg-ink); box-shadow: 0 0 0 0 var(--ecg-ink); animation: pulse 1.6s infinite; }
.pill.upcoming .dot { background: var(--amber-ink); }
.pill.finished .dot { background: var(--muted); animation: none; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--ecg-ink) 60%, transparent); } 70% { box-shadow: 0 0 0 7px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }

.progress { position: absolute; left: 0; right: 0; bottom: -8px; height: 16px; pointer-events: none; }
.progress svg { width: 100%; height: 100%; overflow: visible; }
.progress path { fill: none; stroke: var(--heart-ink); stroke-width: 1.6; stroke-linejoin: round; vector-effect: non-scaling-stroke; }

/* ------------------------------------------------------------ hero monitor */
.hero {
  position: relative; overflow: hidden; isolation: isolate;
  margin: 64px 8px 0; min-height: calc(100svh - 72px);
  border-radius: 28px;
  background:
    radial-gradient(120% 80% at 80% -10%, #0c2d63 0%, transparent 60%),
    radial-gradient(90% 70% at 10% 110%, rgba(79, 214, 230, 0.10) 0%, transparent 60%),
    linear-gradient(180deg, var(--scr) 0%, var(--scr-2) 100%);
  color: var(--scr-ink);
  box-shadow: var(--screen-shadow);
  display: flex; flex-direction: column;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .hero {
    background:
      radial-gradient(120% 70% at 50% 118%, rgba(255, 110, 70, 0.20) 0%, rgba(255, 90, 60, 0.06) 35%, transparent 62%),
      radial-gradient(120% 80% at 80% -10%, #0c2d63 0%, transparent 60%),
      linear-gradient(180deg, var(--scr) 0%, var(--scr-2) 100%);
  }
}
:root[data-theme="dark"] .hero {
  background:
    radial-gradient(120% 70% at 50% 118%, rgba(255, 110, 70, 0.20) 0%, rgba(255, 90, 60, 0.06) 35%, transparent 62%),
    radial-gradient(120% 80% at 80% -10%, #0c2d63 0%, transparent 60%),
    linear-gradient(180deg, var(--scr) 0%, var(--scr-2) 100%);
}
.hero::after { /* faint scanlines */
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.018) 0 1px, transparent 1px 3px);
}
.hero .grid { position: absolute; inset: 0; z-index: -2; opacity: 0.5;
  background-image: linear-gradient(var(--scr-line) 1px, transparent 1px), linear-gradient(90deg, var(--scr-line) 1px, transparent 1px);
  background-size: 44px 44px; mask-image: radial-gradient(90% 70% at 50% 40%, #000 30%, transparent 85%); }
.lake { position: absolute; z-index: -1; pointer-events: none; }
.lake path { fill: none; stroke: var(--spo2); vector-effect: non-scaling-stroke; }
.lake .shore { stroke-width: 1.3; opacity: 0.55; }
.lake .iso { stroke-width: 1; }
.lake .hosp { fill: var(--heart); }
.lake .hosp-ring { fill: none; stroke: var(--heart); stroke-width: 1.2; vector-effect: non-scaling-stroke; transform-box: fill-box; transform-origin: center; animation: ring 2.6s ease-out infinite; }
@keyframes ring { from { transform: scale(0.6); opacity: 0.9; } to { transform: scale(2.6); opacity: 0; } }
.hero .lake { right: -14%; top: 4%; width: 118%; opacity: 0.28; }

.hero-inner { position: relative; padding: 28px 20px 0; display: flex; flex-direction: column; gap: 18px; flex: 1; }
.kicker { font: 600 11px/1.3 var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--scr-muted); }
.kicker b { color: var(--spo2); font-weight: 600; }
.hero h1 { margin: 0; font-weight: 600; font-size: clamp(34px, 9.2vw, 76px); line-height: 0.98; letter-spacing: -0.035em; text-wrap: balance; }
.hero h1 .line { display: block; }
.hero h1 em { font-style: normal; color: var(--ecg); text-shadow: 0 0 24px rgba(61, 252, 154, 0.35); }
.hero .theme-chip {
  align-self: flex-start; display: inline-flex; gap: 8px; align-items: center;
  padding: 7px 12px; border-radius: 999px; border: 1px solid rgba(255, 194, 74, 0.4);
  color: var(--amber); font: 600 12px/1.2 var(--mono); letter-spacing: 0.04em; background: rgba(255, 194, 74, 0.07);
}

.channels { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--scr-line); border: 1px solid var(--scr-line); border-radius: 16px; overflow: hidden; }
.ch { background: color-mix(in srgb, var(--scr-2) 86%, transparent); padding: 12px 14px 12px; min-width: 0; }
.ch.big { grid-column: 1 / -1; padding: 16px 16px 14px; }
.ch label { display: flex; justify-content: space-between; font: 600 10.5px/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; }
.ch label span:last-child { color: var(--scr-muted); letter-spacing: 0.06em; }
.ch .v { display: block; margin-top: 6px; font: 600 clamp(24px, 7vw, 40px)/1 var(--mono); font-variant-numeric: tabular-nums; letter-spacing: -0.03em; white-space: nowrap; }
.ch.big .v { font-size: clamp(38px, 11.6vw, 112px); letter-spacing: -0.05em; }
.ch .u { font-size: 0.42em; letter-spacing: 0; margin-left: 4px; color: var(--scr-muted); font-weight: 500; }
.c-ecg { color: var(--ecg); } .c-ecg .v { text-shadow: 0 0 28px rgba(61, 252, 154, 0.28); }
.c-spo2 { color: var(--spo2); } .c-amber { color: var(--amber); } .c-heart { color: var(--heart); } .c-white { color: var(--scr-ink); }

.trace { position: relative; height: 120px; margin: 6px -20px 0; }
.trace svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.trace .line { fill: none; stroke: var(--ecg); stroke-width: 2.2; stroke-linejoin: round; stroke-linecap: round; filter: drop-shadow(0 0 6px rgba(61, 252, 154, 0.55)); }
.trace .water { fill: none; stroke: var(--spo2); stroke-width: 1; opacity: 0.35; }
.trace .head { fill: #eafff4; filter: drop-shadow(0 0 8px var(--ecg)); }

.hero-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; padding: 0 20px 22px; margin-top: auto; }
.hero-foot .sub { font: 500 12px/1.4 var(--mono); color: var(--scr-muted); letter-spacing: 0.02em; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 52px; padding: 0 22px; border-radius: 14px; border: 0; cursor: pointer;
  font: 700 16px/1 var(--font); letter-spacing: -0.005em; text-decoration: none;
  background: var(--heart); color: #fff; box-shadow: 0 8px 22px rgba(255, 90, 60, 0.35), inset 0 -2px 0 rgba(0, 0, 0, 0.15);
  transition: transform 0.15s ease, box-shadow 0.2s ease, opacity 0.2s;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: transparent; color: inherit; box-shadow: inset 0 0 0 1.5px currentColor; }
.btn.dark { background: var(--ink); color: var(--bg); box-shadow: none; }
.btn[aria-disabled="true"] { opacity: 0.38; pointer-events: none; box-shadow: none; }
.btn svg { width: 18px; height: 18px; }

/* ------------------------------------------------------------ chapters */
main { display: block; }
.chapter { position: relative; max-width: 1180px; margin: 0 auto; padding: 72px 16px 8px; }
.chead { display: grid; gap: 10px; margin-bottom: 26px; }
.chead .eyebrow { display: flex; align-items: center; gap: 10px; font: 600 11px/1 var(--mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--heart-ink); }
.chead .eyebrow::after { content: ""; flex: 1; height: 1px; background: linear-gradient(90deg, var(--line-2), transparent); }
.chead h2 { margin: 0; font-weight: 600; font-size: clamp(30px, 7vw, 54px); line-height: 1.02; letter-spacing: -0.035em; text-wrap: balance; }
.chead p { margin: 0; max-width: 60ch; color: var(--ink-2); font-size: 17px; text-wrap: pretty; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.screen {
  background: linear-gradient(180deg, var(--scr) 0%, var(--scr-2) 100%); color: var(--scr-ink);
  border-radius: var(--radius); box-shadow: var(--screen-shadow); position: relative; overflow: hidden;
}
.label { font: 600 10.5px/1.2 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.screen .label { color: var(--scr-muted); }

.banner {
  max-width: 1180px; margin: 16px auto 0; padding: 0 16px;
}
.banner > div {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 14px 16px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow);
}
.banner.warn > div { border-color: color-mix(in srgb, var(--amber-ink) 50%, var(--line)); }
.banner.ok > div { border-color: color-mix(in srgb, var(--ecg-ink) 50%, var(--line)); }
.banner .ic { flex: none; width: 10px; height: 10px; margin-top: 7px; border-radius: 50%; background: var(--amber-ink); }
.banner.ok .ic { background: var(--ecg-ink); }
.banner p { margin: 0; }
.banner a { font-weight: 700; }

/* ------------------------------------------------------------ you */
.you-grid { display: grid; gap: 14px; }
.youmon { padding: 18px 16px 16px; }
.youmon .who { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.avatar { width: 40px; height: 40px; border-radius: 50%; flex: none; object-fit: cover; background: var(--line); display: grid; place-items: center; font: 700 13px/1 var(--font); color: var(--ink-2); overflow: hidden; }
.screen .avatar { background: var(--scr-3); color: var(--scr-ink); }
.youmon .who .avatar { width: 48px; height: 48px; box-shadow: 0 0 0 2px var(--scr-2), 0 0 0 3.5px var(--ecg); }
.youmon .who b { font-size: 20px; letter-spacing: -0.02em; display: block; line-height: 1.1; }
.lvl { display: inline-flex; align-items: center; gap: 6px; font: 600 11px/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--spo2); }
.youmon .channels { grid-template-columns: 1fr 1fr; }
.youmon .ch .v { font-size: clamp(26px, 8vw, 42px); }
.rank-row { display: flex; align-items: baseline; gap: 8px; }
.rank-row .blip { width: 28px; height: 16px; }

.gauge { display: grid; grid-template-columns: auto 1fr; gap: 14px; align-items: center; margin-top: 14px; }
.gauge svg { width: 64px; height: 64px; transform: rotate(-90deg); }
.gauge circle { fill: none; stroke-width: 6; }
.gauge .bg { stroke: var(--scr-line); }
.gauge .fg { stroke: var(--amber); stroke-linecap: round; transition: stroke-dashoffset 1s cubic-bezier(.2,.8,.2,1); }
.gauge.done .fg { stroke: var(--ecg); }
.gauge p { margin: 0; font-size: 14px; color: var(--scr-muted); }
.gauge p b { color: var(--scr-ink); font-weight: 600; }

.lvlbar { margin-top: 14px; }
.lvlbar .track { height: 6px; border-radius: 3px; background: var(--scr-line); overflow: hidden; margin-top: 8px; }
.lvlbar .fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--spo2), var(--ecg)); border-radius: 3px; transition: width 1.2s cubic-bezier(.2,.8,.2,1); }
.lvlbar .row { display: flex; justify-content: space-between; font: 500 12px/1.2 var(--mono); color: var(--scr-muted); }

.feed { display: grid; gap: 10px; }
.note { display: grid; grid-template-columns: 34px 1fr; gap: 12px; align-items: start; padding: 14px 16px; }
.note .ico { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: var(--surface-2); border: 1px solid var(--line); }
.note .ico svg { width: 22px; height: 14px; }
.note p { margin: 0; }
.note p small { display: block; color: var(--muted); font-size: 13.5px; margin-top: 2px; }
.note.pb .ico { background: color-mix(in srgb, var(--ecg-ink) 12%, var(--surface)); }
.note.warn .ico { background: color-mix(in srgb, var(--amber-ink) 14%, var(--surface)); }

.ladder { padding: 6px; }
.ladder .lrow { display: grid; grid-template-columns: 38px 34px 1fr auto; gap: 10px; align-items: center; padding: 9px 10px; border-radius: 12px; }
.ladder .lrow .avatar { width: 34px; height: 34px; font-size: 12px; }
.ladder .lrow.me { background: var(--you); box-shadow: inset 0 0 0 1px var(--you-line); }
.ladder .gap { font: 500 12px/1.2 var(--mono); color: var(--muted); text-align: right; }
.ladder .gap b { color: var(--ink); font-weight: 600; }
.ladder .r { font: 600 14px/1 var(--mono); color: var(--muted); }
.ladder .nm { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ladder h3 { margin: 8px 10px 6px; }

.badges { display: flex; flex-wrap: wrap; gap: 8px; }
.badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 10px 6px 6px; border-radius: 10px;
  background: var(--surface-2); border: 1px solid var(--line); font-size: 13px; font-weight: 600;
}
.badge i { font: 700 10px/1 var(--mono); font-style: normal; letter-spacing: 0.02em; padding: 5px 5px; border-radius: 6px; background: var(--ink); color: var(--bg); min-width: 30px; text-align: center; }
.badge.locked { opacity: 0.5; font-weight: 500; }
.badge.locked i { background: transparent; color: var(--muted); box-shadow: inset 0 0 0 1px var(--line-2); }

/* ------------------------------------------------------------ join */
.steps { display: grid; gap: 14px; counter-reset: step; }
.step { padding: 20px 18px; position: relative; }
.step .n { display: inline-flex; align-items: center; gap: 10px; font: 700 12px/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--heart-ink); }
.step .n i { font-style: normal; display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--heart-ink); color: #fff; font-size: 13px; letter-spacing: 0; }
.step.done .n i { background: var(--ecg-ink); }
.step h3 { margin: 12px 0 6px; font-size: 24px; letter-spacing: -0.02em; line-height: 1.15; }
.step p { margin: 0 0 12px; color: var(--ink-2); }
.step ol { margin: 14px 0 16px; padding: 0; list-style: none; display: grid; gap: 10px; counter-reset: li; }
.step ol li { counter-increment: li; display: grid; grid-template-columns: 26px 1fr; gap: 10px; }
.step ol li::before { content: counter(li); font: 700 12px/26px var(--mono); text-align: center; width: 26px; height: 26px; border-radius: 8px; background: var(--surface-2); border: 1px solid var(--line); color: var(--ink-2); }
.step ol li b { font-weight: 700; }
.step .stores { display: flex; flex-wrap: wrap; gap: 10px; margin: 6px 0 4px; }
.store { display: inline-flex; align-items: center; gap: 12px; min-height: 56px; padding: 0 18px; border-radius: 14px; background: var(--ink); color: var(--bg); text-decoration: none; }
.store svg { width: 24px; height: 24px; fill: currentColor; }
.store span { display: grid; line-height: 1.05; }
.store small { font: 500 11px/1 var(--font); opacity: 0.8; }
.store b { font-size: 18px; letter-spacing: -0.01em; }
.step.locked { opacity: 0.55; }
.step.locked .btn, .step.locked .checks { pointer-events: none; }
.checks { display: grid; gap: 10px; margin: 14px 0 16px; }
.check { display: grid; grid-template-columns: 28px 1fr; gap: 12px; align-items: center; padding: 12px 14px; border-radius: 12px; border: 1.5px solid var(--line-2); cursor: pointer; background: var(--surface-2); font-weight: 600; }
.check input { appearance: none; -webkit-appearance: none; margin: 0; width: 26px; height: 26px; border-radius: 8px; border: 2px solid var(--line-2); background: var(--surface); display: grid; place-items: center; }
.check input:checked { background: var(--ecg-ink); border-color: var(--ecg-ink); }
.check input:checked::after { content: ""; width: 12px; height: 7px; border: 3px solid #fff; border-top: 0; border-right: 0; transform: translateY(-2px) rotate(-45deg); }
.check:has(input:checked) { border-color: color-mix(in srgb, var(--ecg-ink) 60%, var(--line)); }
.fine { font-size: 14px; color: var(--muted); margin-top: 12px; }
.help { margin-top: 14px; border-top: 1px solid var(--line); padding-top: 12px; }
.help summary { cursor: pointer; font-weight: 600; color: var(--ink-2); }
.help p { margin: 8px 0 0; color: var(--ink-2); font-size: 15px; }
.joinside { display: none; }
.qr { background: #fff; padding: 14px; border-radius: 16px; width: 200px; }
.qr img, .qr svg { width: 100%; height: auto; }

.joined { padding: 26px 20px; text-align: left; }
.joined h3 { margin: 10px 0 8px; font-size: clamp(28px, 7vw, 44px); letter-spacing: -0.03em; line-height: 1.05; }
.joined p { margin: 0; color: var(--scr-muted); max-width: 52ch; }
.joined .trace { height: 90px; margin: 10px -20px 6px; }

/* ------------------------------------------------------------ leaderboard */
.boardbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 12px; }
.seg { display: inline-flex; padding: 4px; border-radius: 12px; background: var(--surface); border: 1px solid var(--line); }
.seg button { border: 0; background: transparent; padding: 9px 14px; border-radius: 9px; font-weight: 600; cursor: pointer; color: var(--muted); }
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--bg); }
.find { flex: 1; min-width: 160px; position: relative; }
.find input { width: 100%; height: 44px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); padding: 0 14px 0 38px; font: 500 15px var(--font); }
.find svg { position: absolute; left: 12px; top: 13px; width: 18px; height: 18px; stroke: var(--muted); fill: none; stroke-width: 2; }
.weeknote { font: 500 12.5px/1.4 var(--mono); color: var(--muted); margin: 0 0 12px; }

.lb { list-style: none; margin: 0; padding: 6px; }
.lb li { display: grid; grid-template-columns: 34px 26px 38px minmax(0, 1fr) auto; gap: 10px; align-items: center; padding: 9px 10px; border-radius: 12px; }
.lb li + li { border-top: 1px solid var(--line); }
.lb li.me { background: var(--you); box-shadow: inset 0 0 0 1px var(--you-line); border-top-color: transparent; }
.lb li.me + li { border-top-color: transparent; }
.lb li.top1 .r { color: var(--heart-ink); }
.lb .r { font: 700 15px/1 var(--mono); text-align: right; color: var(--ink-2); }
.lb .avatar { width: 38px; height: 38px; }
.lb .nm { min-width: 0; }
.lb .nm b { display: block; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lb .nm small { display: block; font: 500 11.5px/1.3 var(--mono); color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lb .nm small .t { color: var(--spo2-ink); }
.lb .val { text-align: right; font: 600 16px/1 var(--mono); font-variant-numeric: tabular-nums; }
.lb .val small { display: block; margin-top: 4px; font: 500 11px/1 var(--mono); color: var(--muted); }
.lb .sep { display: block; text-align: center; color: var(--muted); font: 600 12px/1 var(--mono); letter-spacing: 0.3em; padding: 10px; border: 0; }
.blip { width: 24px; height: 14px; }
.blip path { fill: none; stroke-width: 1.8; stroke-linejoin: round; stroke-linecap: round; }
.blip.up path { stroke: var(--ecg-ink); }
.blip.down path { stroke: var(--amber-ink); }
.blip.same path { stroke: var(--line-2); }
.screen .blip.up path { stroke: var(--ecg); } .screen .blip.down path { stroke: var(--amber); }
.more { display: flex; justify-content: center; padding: 10px 6px 14px; }
.more button { border: 1px solid var(--line-2); background: var(--surface); border-radius: 12px; padding: 12px 18px; font-weight: 600; cursor: pointer; }
.empty { padding: 26px 18px; text-align: center; color: var(--muted); }

.wall { display: flex; flex-wrap: wrap; gap: 6px; padding: 16px; }
.wall .avatar { width: 40px; height: 40px; }

/* ------------------------------------------------------------ vitals / journey */
.journey { display: grid; gap: 16px; }
.stage { padding: 18px 16px; display: grid; gap: 12px; }
.heart { width: min(100%, 440px); margin: 0 auto; aspect-ratio: 400 / 420; }
.heart svg { width: 100%; height: 100%; overflow: visible; }
.heart .outline { fill: rgba(79, 214, 230, 0.04); stroke: var(--scr-line); stroke-width: 1.5; }
.heart .aorta { fill: none; stroke: rgba(143, 173, 214, 0.28); stroke-width: 10; stroke-linecap: round; }
.heart .seg-bg { fill: none; stroke: rgba(143, 173, 214, 0.22); stroke-width: 7; stroke-linecap: round; }
.heart .seg-fg { fill: none; stroke: var(--heart); stroke-width: 7; stroke-linecap: round; filter: drop-shadow(0 0 6px rgba(255, 90, 60, 0.6)); }
.heart .tip { fill: #fff; filter: drop-shadow(0 0 8px var(--heart)); }
.heart .lbl { font: 600 11px var(--mono); fill: var(--scr-muted); letter-spacing: 0.06em; }
.heart .lbl.on { fill: var(--scr-ink); }
.heart .hit { fill: none; stroke: transparent; stroke-width: 26; stroke-linecap: round; cursor: pointer; pointer-events: stroke; }
.jstat { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: end; }
.jstat .v { font: 600 clamp(40px, 12vw, 72px)/1 var(--mono); letter-spacing: -0.05em; color: var(--heart); }
.jstat .where { text-align: right; font: 500 12px/1.4 var(--mono); color: var(--scr-muted); }
.jstat .where b { display: block; color: var(--scr-ink); font: 600 16px/1.2 var(--font); }
.jbar { height: 6px; border-radius: 3px; background: var(--scr-line); overflow: hidden; }
.jbar span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--spo2), var(--heart)); }
.landmark { font-size: 15px; color: var(--scr-muted); min-height: 3em; }
.landmark b { color: var(--scr-ink); }
.impact { display: grid; gap: 12px; }
.stat { padding: 16px; }
.stat .v { display: block; font: 600 30px/1.05 var(--mono); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; margin-top: 6px; }
.stat p { margin: 6px 0 0; color: var(--ink-2); font-size: 14.5px; }
.spark { padding: 16px 16px 12px; }
.spark svg { width: 100%; height: 90px; margin-top: 10px; overflow: visible; }
.spark rect { fill: var(--spo2-ink); opacity: 0.35; }
.spark rect.last { opacity: 1; fill: var(--heart-ink); }
.spark rect.rec { opacity: 0.85; }
.spark .axis { font: 500 11px var(--mono); fill: var(--muted); }
.quote { padding: 18px; font-size: 18px; font-weight: 500; letter-spacing: -0.01em; }
.quote p { margin: 0; text-wrap: pretty; }

/* ------------------------------------------------------------ rounds */
.rounds { display: grid; gap: 14px; }
.rc { padding: 18px 16px; }
.rc h3 { margin: 6px 0 12px; font-size: 20px; letter-spacing: -0.02em; line-height: 1.2; }
.podium { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; align-items: end; margin-top: 8px; }
.pod { display: grid; justify-items: center; gap: 6px; text-align: center; min-width: 0; }
.pod .avatar { width: 48px; height: 48px; }
.pod.p1 .avatar { width: 62px; height: 62px; box-shadow: 0 0 0 3px var(--surface), 0 0 0 5px var(--heart-ink); }
.pod b { font-size: 13.5px; max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pod .num { font-size: 13px; color: var(--muted); }
.pod .plinth { width: 100%; border-radius: 10px 10px 4px 4px; background: var(--surface-2); border: 1px solid var(--line); display: grid; place-items: center; font: 700 15px var(--mono); color: var(--ink-2); }
.pod.p1 .plinth { height: 64px; background: color-mix(in srgb, var(--heart-ink) 12%, var(--surface)); color: var(--heart-ink); }
.pod.p2 .plinth { height: 46px; } .pod.p3 .plinth { height: 34px; }
.plist { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.plist li { display: grid; grid-template-columns: 36px 1fr auto; gap: 10px; align-items: center; }
.plist .avatar { width: 36px; height: 36px; }
.plist b { font-weight: 600; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.plist small { display: block; color: var(--muted); font-size: 13px; }
.plist .num { font-weight: 600; color: var(--ecg-ink); }
.moment { padding: 18px 16px; }
.moment .big { font: 600 clamp(30px, 8vw, 44px)/1 var(--mono); letter-spacing: -0.04em; color: var(--ecg); margin: 10px 0 8px; }
.moment p { margin: 0; color: var(--scr-muted); }
.moment p b { color: var(--scr-ink); }
.shout { padding: 18px 16px; background: linear-gradient(135deg, color-mix(in srgb, var(--spo2-ink) 10%, var(--surface)), var(--surface)); }
.shout h3 { margin: 6px 0 6px; }
.shout p, .news p { margin: 0; color: var(--ink-2); }
.news article + article { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); }
.news h4 { margin: 0 0 4px; font-size: 16px; }
.news time { font: 500 11.5px var(--mono); color: var(--muted); }
.fact { padding: 20px 18px; }
.fact blockquote { margin: 10px 0 10px; font-size: 20px; line-height: 1.35; font-weight: 500; letter-spacing: -0.012em; text-wrap: pretty; }
.fact cite { font: 500 12px/1.3 var(--mono); color: var(--scr-muted); font-style: normal; }

/* quiz */
.quiz { padding: 18px 16px; }
.quiz .top { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.quiz .dots { display: flex; gap: 6px; }
.quiz .dots button { width: 26px; height: 6px; border-radius: 3px; border: 0; padding: 0; background: var(--scr-line); cursor: pointer; }
.quiz .dots button.on { background: var(--scr-ink); }
.quiz .dots button.ok { background: var(--ecg); } .quiz .dots button.no { background: var(--amber); }
.quiz h3 { margin: 12px 0 12px; font-size: 21px; line-height: 1.25; letter-spacing: -0.015em; }
.qstrip { height: 110px; margin: 0 -16px 12px; background-image: linear-gradient(rgba(255, 90, 60, 0.12) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 90, 60, 0.12) 1px, transparent 1px); background-size: 22px 22px; position: relative; overflow: hidden; }
.qstrip svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.qstrip path { fill: none; stroke: var(--ecg); stroke-width: 2; stroke-linejoin: round; filter: drop-shadow(0 0 4px rgba(61, 252, 154, 0.5)); }
.opts { display: grid; gap: 8px; }
.opt { text-align: left; padding: 13px 14px; border-radius: 12px; border: 1.5px solid var(--scr-line); background: rgba(255, 255, 255, 0.03); color: var(--scr-ink); font-weight: 600; cursor: pointer; transition: border-color 0.2s, background 0.2s, transform 0.15s; }
.opt:hover { border-color: rgba(143, 173, 214, 0.45); }
.opt.right { border-color: var(--ecg); background: rgba(61, 252, 154, 0.12); }
.opt.wrong { border-color: var(--amber); background: rgba(255, 194, 74, 0.1); }
.opts.mf { grid-template-columns: 1fr 1fr; }
.opts.mf .opt { text-align: center; font-size: 18px; padding: 18px; }
.guess { display: grid; gap: 12px; }
.guess output { font: 600 36px/1 var(--mono); letter-spacing: -0.04em; color: var(--amber); }
.guess output small { font-size: 14px; color: var(--scr-muted); letter-spacing: 0; margin-left: 6px; }
.guess input[type="range"] { width: 100%; accent-color: var(--amber); height: 32px; }
.guess .ans { font: 600 36px/1 var(--mono); color: var(--ecg); letter-spacing: -0.04em; }
.qheart { width: min(100%, 300px); margin: 0 auto 6px; }
.explain { margin-top: 12px; padding: 12px 14px; border-radius: 12px; background: rgba(255, 255, 255, 0.05); color: var(--scr-ink); font-size: 15px; }
.explain b { color: var(--ecg); }
.explain.no b { color: var(--amber); }
.quiz .nav { display: flex; justify-content: space-between; align-items: center; margin-top: 14px; font: 500 12px var(--mono); color: var(--scr-muted); }
.quiz .nav button { border: 0; background: var(--scr-ink); color: var(--scr); padding: 10px 14px; border-radius: 10px; font-weight: 700; cursor: pointer; }

/* hall of weeks */
.hall { display: grid; gap: 12px; }
.wk { padding: 16px; display: grid; gap: 12px; }
.wk header { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.wk header b { font-size: 18px; letter-spacing: -0.02em; }
.wk header span { font: 500 12px var(--mono); color: var(--muted); }
.wk.live header span { color: var(--ecg-ink); }
.wk ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.wk li { display: grid; grid-template-columns: 26px 32px 1fr auto; gap: 10px; align-items: center; }
.wk li .avatar { width: 32px; height: 32px; font-size: 11px; }
.wk li i { font: 700 12px var(--mono); font-style: normal; color: var(--muted); text-align: center; }
.wk li:first-child i { color: var(--heart-ink); }
.wk li b { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ------------------------------------------------------------ footer */
.foot { max-width: 1180px; margin: 72px auto 0; padding: 28px 16px 120px; border-top: 1px solid var(--line); display: grid; gap: 18px; color: var(--muted); font-size: 14px; }
.foot .who { display: flex; gap: 12px; align-items: center; color: var(--ink); }
.foot .who .mark { width: 40px; height: 40px; }
.foot .who b { display: block; font-size: 15px; }
.foot .who span { display: block; font: 500 11px/1.3 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.foot p { margin: 0; max-width: 70ch; }
.foot .links { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.foot .links a, .foot .links button { color: var(--ink-2); background: none; border: 0; padding: 0; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; font-size: 14px; }
.cobrand { display: none; }

.demo-chip {
  position: fixed; left: 12px; bottom: 12px; z-index: 60;
  display: flex; gap: 10px; align-items: center;
  padding: 8px 8px 8px 12px; border-radius: 12px; background: var(--ink); color: var(--bg);
  font: 600 12px/1.2 var(--mono); letter-spacing: 0.04em; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}
.demo-chip a { color: inherit; background: color-mix(in srgb, var(--bg) 16%, transparent); padding: 6px 9px; border-radius: 8px; text-decoration: none; }
.demo-chip select { font: inherit; background: transparent; color: inherit; border: 1px solid color-mix(in srgb, var(--bg) 30%, transparent); border-radius: 8px; padding: 5px 6px; }

/* reveal defaults (motion.js animates these in) */
.js-motion [data-reveal] { opacity: 0; transform: translateY(26px); }

/* ------------------------------------------------------------ wider screens */
@media (min-width: 760px) {
  .hero { margin: 72px 16px 0; min-height: min(calc(100svh - 88px), 900px); border-radius: 34px; }
  .hero-inner { padding: 44px 44px 0; }
  .hero-foot { padding: 0 44px 34px; }
  .trace { margin: 6px -44px 0; height: 150px; }
  .channels { grid-template-columns: 1fr 1fr 1fr 1fr; }
  .ch.big { grid-column: 1 / -1; }
  .hero .lake { right: -4%; top: -6%; width: 78%; opacity: 0.32; }
  .chapter { padding: 110px 28px 8px; }
  .banner { padding: 0 28px; }
  .you-grid { grid-template-columns: 1.15fr 1fr; align-items: start; }
  .you-grid #mybadges { grid-column: 1 / -1; }
  .demo-chip { left: auto; right: 16px; }
  .you-grid .feed { grid-column: 1 / -1; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
  .steps { grid-template-columns: 1fr 1fr; }
  .rounds { grid-template-columns: repeat(2, 1fr); }
  .rounds .wide { grid-column: 1 / -1; }
  .impact { grid-template-columns: repeat(3, 1fr); }
  .impact .spark, .impact .quote { grid-column: 1 / -1; }
  .hall { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
  .foot { grid-template-columns: 1fr 1fr; align-items: start; }
  .joinside { display: grid; gap: 12px; justify-items: start; }
  .lb li { grid-template-columns: 44px 28px 40px minmax(0, 1fr) 110px 110px; }
  .lb .val.today { display: block; }
}
@media (min-width: 1100px) {
  .journey { grid-template-columns: 1.1fr 1fr; align-items: start; }
  .rounds { grid-template-columns: repeat(3, 1fr); }
  .rounds .wide { grid-column: span 2; }
  .board-wrap { display: grid; grid-template-columns: minmax(0, 1fr); }
}
.lb .val.today { display: none; color: var(--muted); font-weight: 500; }
@media (min-width: 760px) { .lb .val.today { display: block; } .lb .val small.m { display: none; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001s !important; animation-iteration-count: 1 !important; transition-duration: 0.001s !important; }
}