@font-face { font-family: "Outfit Variable"; font-style: normal; font-display: swap; font-weight: 100 900; src: url(fonts/outfit-latin-wght-normal.woff2) format("woff2-variations"); unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
:root { --nav-font: "Outfit Variable", "Outfit", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
:root {
  --bg: #faf7f2; --card: #fff; --ink: #191a2e; --muted: #656a82; --line: #e8e2d6;
  --brand: #4a3fe0; --brand-ink: #fff; --accent: #f59e0b; --accent-2: #e0457b; --ok: #0f8a5f; --ok-bg: #e2f5ec;
  --bad: #d6403a; --bad-bg: #fdecea; --warn: #9a5a00; --warn-bg: #fff1d6; --sel: #ecebff;
  --glow: #4a3fe026; --shadow: 0 10px 34px #2a237014;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b0d1b; --card: #141729; --ink: #eceefb; --muted: #9a9fc0; --line: #272b49;
    --brand: #8f8bff; --brand-ink: #0b0b1e; --accent: #ffb23e; --accent-2: #ff6b9a; --ok: #43d69a; --ok-bg: #0f2f27;
    --bad: #ff7a73; --bad-bg: #3a1a22; --warn: #ffb23e; --warn-bg: #35270f; --sel: #22265a;
    --glow: #8f8bff30; --shadow: 0 12px 40px #00000066;
  }
}
:root[data-theme="dark"] {
  --bg: #0b0d1b; --card: #141729; --ink: #eceefb; --muted: #9a9fc0; --line: #272b49;
  --brand: #8f8bff; --brand-ink: #0b0b1e; --accent: #ffb23e; --accent-2: #ff6b9a; --ok: #43d69a; --ok-bg: #0f2f27;
  --bad: #ff7a73; --bad-bg: #3a1a22; --warn: #ffb23e; --warn-bg: #35270f; --sel: #22265a;
  --glow: #8f8bff30; --shadow: 0 12px 40px #00000066;
}
:root { color-scheme: light dark; }
:root[data-theme="light"] { color-scheme: light; }
:root[data-theme="dark"] { color-scheme: dark; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--brand); text-decoration: none; }
.pad { padding: 24px 0; }
.muted { color: var(--muted); }
h1 { font-size: 26px; margin: 4px 0 16px; letter-spacing: -.02em; }
h2 { font-size: 19px; margin: 28px 0 10px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.grid { display: grid; gap: 14px; }
.g4 { grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }
.g2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.stat .v { font-size: 30px; font-weight: 800; letter-spacing: -.02em; }
.stat .l { color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: .05em; }
.btn { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line); background: var(--card); color: var(--ink); padding: 9px 16px; border-radius: 10px; font: inherit; font-weight: 600; cursor: pointer; }
.btn:hover { border-color: var(--brand); }
.btn.primary { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
.btn.danger { color: var(--bad); }
.btn.sm { padding: 5px 10px; font-size: 14px; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .05em; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.bar { height: 8px; background: var(--line); border-radius: 99px; overflow: hidden; min-width: 90px; }
.bar > i { display: block; height: 100%; background: var(--brand); }
.bar.acc > i { background: var(--ok); }
.pill { display: inline-block; padding: 1px 9px; border-radius: 99px; font-size: 12.5px; font-weight: 700; }
.pill.ok { background: var(--ok-bg); color: var(--ok); }
.pill.bad { background: var(--bad-bg); color: var(--bad); }
.pill.skip { background: var(--warn-bg); color: var(--warn); }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.sp { flex: 1; }
label.chk { display: flex; gap: 8px; align-items: center; cursor: pointer; }
input[type=number], input[type=text], select { font: inherit; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--ink); }
input[type=number] { width: 90px; }
details.subj { border: 1px solid var(--line); border-radius: 12px; background: var(--card); margin-bottom: 10px; }
details.subj > summary { padding: 12px 16px; cursor: pointer; font-weight: 700; display: flex; gap: 10px; align-items: center; list-style: none; }
details.subj > summary::-webkit-details-marker { display: none; }
.chlist { padding: 4px 16px 12px; max-height: 420px; overflow: auto; }
.chlist .grp { font-size: 12px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; margin: 12px 0 4px; }
.chlist label.chk { padding: 4px 0; font-size: 15px; }
.chlist .cnt { margin-left: auto; color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }
/* test */
.testbar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.timer { font-weight: 800; font-variant-numeric: tabular-nums; font-size: 20px; }
.timer.low { color: var(--bad); }
.layout { display: grid; grid-template-columns: 1fr 260px; gap: 16px; align-items: start; }
@media (max-width: 820px) { .layout { grid-template-columns: 1fr; } }
.q .meta { color: var(--muted); font-size: 13px; margin-bottom: 8px; display: flex; gap: 10px; flex-wrap: wrap; }
.q .stem { font-size: 18px; font-weight: 600; white-space: pre-line; margin-bottom: 14px; }
.opt { display: flex; gap: 12px; align-items: flex-start; width: 100%; text-align: left; border: 1.5px solid var(--line); background: var(--card); color: var(--ink); border-radius: 12px; padding: 11px 14px; margin-bottom: 9px; font: inherit; cursor: pointer; }
.opt:hover { border-color: var(--brand); }
.opt .k { flex: none; width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; font-size: 14px; border: 1.5px solid var(--line); text-transform: uppercase; }
.opt.sel { border-color: var(--brand); background: var(--sel); }
.opt.sel .k { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
.opt.right { border-color: var(--ok); background: var(--ok-bg); }
.opt.right .k { background: var(--ok); color: #fff; border-color: var(--ok); }
.opt.wrong { border-color: var(--bad); background: var(--bad-bg); }
.opt.wrong .k { background: var(--bad); color: #fff; border-color: var(--bad); }
.opt.static { cursor: default; }
.origimg { max-width: min(100%, 560px); border: 1px solid var(--line); border-radius: 10px; background: #fff; margin: 4px 0 12px; }
.imgopts { display: flex; gap: 10px; flex-wrap: wrap; margin: 8px 0; }
.imgopts .opt { width: auto; margin: 0; padding: 8px 18px; }
.pal { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; }
.pal button { height: 38px; border-radius: 8px; border: 1.5px solid var(--line); background: var(--card); color: var(--ink); font: inherit; font-weight: 700; cursor: pointer; }
.pal button.ans { background: var(--ok-bg); border-color: var(--ok); color: var(--ok); }
.pal button.flag { background: var(--warn-bg); border-color: var(--warn); color: var(--warn); }
.pal button.cur { outline: 2.5px solid var(--brand); outline-offset: 1px; }
.pal.res button.c { background: var(--ok-bg); border-color: var(--ok); color: var(--ok); }
.pal.res button.w { background: var(--bad-bg); border-color: var(--bad); color: var(--bad); }
.pal.res button.s { background: var(--warn-bg); border-color: var(--warn); color: var(--warn); }
.expl { margin-top: 12px; padding: 12px 14px; border-radius: 10px; background: var(--sel); font-size: 15px; white-space: pre-line; }
.expl b { display: block; margin-bottom: 2px; }
.score { font-size: 54px; font-weight: 800; letter-spacing: -.03em; line-height: 1; }
.rev { margin-bottom: 14px; }
.tabs { display: flex; gap: 6px; margin: 14px 0; flex-wrap: wrap; }
.tabs button { border: 1px solid var(--line); background: var(--card); color: var(--ink); padding: 6px 14px; border-radius: 99px; font: inherit; font-weight: 600; cursor: pointer; }
.tabs button.on { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
.chart { width: 100%; height: 190px; }
.notice { background: var(--warn-bg); color: var(--warn); padding: 10px 14px; border-radius: 10px; margin: 10px 0; font-size: 14.5px; }
.legend { display: flex; gap: 14px; font-size: 13px; color: var(--muted); margin-top: 10px; flex-wrap: wrap; }
.legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; border: 1.5px solid var(--line); }

/* ---------- shared bits ---------- */
:focus-visible { outline: 2.5px solid var(--brand); outline-offset: 2px; }
.icon { width: 1.15em; height: 1.15em; flex: none; vertical-align: -.2em; }
.logo { display: inline-flex; align-items: center; gap: 9px; font-weight: 800; font-size: 19px; letter-spacing: -.02em; color: var(--ink); }
.logo svg { width: 30px; height: 30px; color: var(--brand); }
.iconbtn { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--ink); cursor: pointer; font: inherit; }
.iconbtn:hover { border-color: var(--brand); color: var(--brand); }
.iconbtn .icon { width: 19px; height: 19px; }
.field { display: grid; gap: 5px; margin-bottom: 14px; font-weight: 600; font-size: 14.5px; }
.field input { width: 100%; font: inherit; font-weight: 400; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); color: var(--ink); }
.field input:focus { border-color: var(--brand); outline: none; box-shadow: 0 0 0 3px var(--sel); }
.field .err { color: var(--bad); font-weight: 500; font-size: 13.5px; min-height: 0; }
.field .hint { color: var(--muted); font-weight: 400; font-size: 13px; }
.btn.block { width: 100%; justify-content: center; padding: 11px 16px; }
.btn.lg { padding: 12px 22px; font-size: 16px; border-radius: 12px; }

/* ---------- public site ---------- */
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.sec { padding: 64px 0 8px; scroll-margin-top: 56px; }
.sec h2 { font-size: 30px; letter-spacing: -.02em; margin: 0 0 8px; }
.sec .lead { color: var(--muted); font-size: 17px; max-width: 680px; margin: 0 0 28px; }
.eyebrow { display: inline-block; font-size: 12.5px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--brand); margin-bottom: 8px; }
.hero { display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center; padding: 56px 0 24px; }
@media (max-width: 900px) { .hero { grid-template-columns: 1fr; padding-top: 36px; } }
.hero h1 { font-size: clamp(34px, 5.2vw, 54px); line-height: 1.07; letter-spacing: -.035em; margin: 0 0 16px; }
.hero h1 em { font-style: normal; color: var(--brand); }
.hero p.sub { font-size: 18px; color: var(--muted); margin: 0 0 26px; max-width: 540px; }
.hero .cta { display: flex; gap: 12px; flex-wrap: wrap; }
.sample { position: relative; padding: 22px; }
.sample .tag { position: absolute; top: 14px; right: 14px; font-size: 11.5px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); border: 1px dashed var(--line); border-radius: 99px; padding: 2px 9px; }
.sample .row2 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 16px 0; }
.sample .mini { background: var(--bg); border-radius: 10px; padding: 10px 12px; }
.sample .mini b { display: block; font-size: 22px; letter-spacing: -.02em; }
.sample .mini span { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.sample .bars { display: grid; gap: 9px; margin-top: 6px; font-size: 14px; }
.sample .bars div { display: grid; grid-template-columns: 110px 1fr 38px; gap: 10px; align-items: center; }
.strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; margin: 36px 0 0; }
.strip .card { text-align: center; padding: 16px 12px; }
.strip .v { font-size: 30px; font-weight: 800; letter-spacing: -.02em; }
.strip .l { color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: .05em; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.feat .ic { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 11px; background: var(--sel); color: var(--brand); margin-bottom: 10px; }
.feat .ic .icon { width: 21px; height: 21px; }
.feat h3 { margin: 0 0 4px; font-size: 17px; }
.feat p { margin: 0; color: var(--muted); font-size: 15px; }
.subj-card { display: flex; flex-direction: column; gap: 4px; }
.subj-card b { font-size: 17px; }
.subj-card .muted { font-size: 14.5px; }
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; counter-reset: s; }
.step { position: relative; padding-top: 50px; }
.step::before { counter-increment: s; content: counter(s); position: absolute; top: 14px; left: 18px; width: 28px; height: 28px; border-radius: 50%; background: var(--brand); color: var(--brand-ink); display: grid; place-items: center; font-weight: 800; font-size: 14px; }
.step h3 { margin: 0 0 4px; font-size: 17px; }
.step p { margin: 0; color: var(--muted); font-size: 15px; }
/* flow diagrams (HTML, so they stay readable on phones: they stack) */
.diagram { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 20px; }
.diagram h4 { margin: 0 0 12px; font-size: 12.5px; letter-spacing: .07em; text-transform: uppercase; color: var(--muted); }
.flow { display: flex; align-items: stretch; gap: 0; }
.flow + h4, .diagram .flow + .flow { margin-top: 22px; }
.node { flex: 1 1 0; min-width: 0; border: 1.5px solid var(--line); border-radius: 12px; padding: 12px 14px; background: var(--bg); }
.node.hi { border-color: var(--brand); background: var(--sel); }
.node .t { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 15px; margin-bottom: 4px; }
.node .t .icon { color: var(--brand); }
.node .d { font-size: 13.5px; color: var(--muted); line-height: 1.4; }
.node .chips { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 8px; }
.node .chip { font-size: 12px; font-weight: 700; padding: 2px 8px; border-radius: 99px; background: var(--card); border: 1px solid var(--line); }
.stack { display: grid; gap: 8px; flex: 1 1 0; min-width: 0; }
.stack .node { padding: 9px 12px; }
.arrow { flex: 0 0 74px; display: grid; place-items: center; text-align: center; color: var(--muted); font-size: 11.5px; font-weight: 700; line-height: 1.2; padding: 0 4px; }
.arrow i { display: block; font-style: normal; font-size: 22px; color: var(--brand); line-height: 1; }
@media (max-width: 860px) {
  .flow { flex-direction: column; }
  .arrow { flex-basis: auto; padding: 8px 0; }
  .arrow i { transform: rotate(90deg); }
}
.formula { margin-top: 16px; display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.formula code { display: block; background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; font: 600 14px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; margin: 6px 0; overflow-x: auto; white-space: pre-wrap; }
.trust { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.band { margin: 64px 0 0; padding: 40px 24px; text-align: center; border-radius: 18px; background: var(--brand); color: var(--brand-ink); }
.band h2 { margin: 0 0 8px; font-size: 28px; }
.band p { margin: 0 0 20px; opacity: .9; }
.band .btn { background: var(--brand-ink); color: var(--brand); border-color: transparent; }
.foot { margin-top: 56px; border-top: 1px solid var(--line); padding: 24px 0 40px; color: var(--muted); font-size: 14px; }
.foot .in { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; justify-content: space-between; }

/* ---------- auth pages ---------- */
.auth { min-height: calc(100vh - 120px); display: grid; place-items: center; padding: 32px 16px; }
.auth .card { width: 100%; max-width: 410px; padding: 28px; }
.auth h1 { margin: 0 0 4px; font-size: 25px; }
.auth .alt { text-align: center; margin: 16px 0 0; color: var(--muted); font-size: 15px; }
.auth .alt a { font-weight: 700; }

/* ---------- dashboard shell ---------- */
.app { display: grid; grid-template-columns: 244px 1fr; min-height: 100vh; }
.app.focus { grid-template-columns: 1fr; }
.app.focus .side { display: none; }
.side { position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; gap: 4px; padding: 16px 12px; background: var(--card); border-right: 1px solid var(--line); }
.side .logo { padding: 4px 10px 16px; }
.side .grp { font-size: 11.5px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); padding: 10px 12px 4px; }
.side a.item { display: flex; align-items: center; gap: 11px; padding: 10px 12px; border-radius: 10px; color: var(--muted); font-weight: 600; font-size: 15.5px; }
.side a.item:hover { background: var(--bg); color: var(--ink); }
.side a.item.on { background: var(--sel); color: var(--brand); }
.side .sp { flex: 1; }
.side .me { display: flex; align-items: center; gap: 10px; padding: 10px; border-top: 1px solid var(--line); margin-top: 8px; }
.avatar { flex: none; width: 34px; height: 34px; border-radius: 50%; background: var(--brand); color: var(--brand-ink); display: grid; place-items: center; font-weight: 800; text-transform: uppercase; }
.me .who { min-width: 0; line-height: 1.25; }
.me .who b { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.me .who span { font-size: 12.5px; color: var(--muted); }
.mainCol { min-width: 0; display: flex; flex-direction: column; }
.dtop { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 12px; padding: 12px 24px; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.dtop h2 { margin: 0; font-size: 18px; }
.dtop .menu { display: none; }
.dmain { max-width: 1100px; width: 100%; margin: 0 auto; padding: 22px 24px 60px; }
.dmain > h1:first-child { margin-top: 0; }
.scrim { display: none; }
@media (max-width: 860px) {
  .app { grid-template-columns: 1fr; }
  .side { position: fixed; z-index: 40; left: 0; top: 0; width: 262px; transform: translateX(-102%); transition: transform .2s; box-shadow: 0 0 40px #0006; }
  .app.open .side { transform: none; }
  .app.open .scrim { display: block; position: fixed; inset: 0; z-index: 30; background: #0007; }
  .dtop { padding: 10px 14px; }
  .dtop .menu { display: inline-grid; }
  .dmain { padding: 16px 14px 60px; }
}
.hello { display: flex; align-items: end; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.hello h1 { margin: 0; }
.toast { position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%); z-index: 100; background: var(--ink); color: var(--bg); padding: 10px 18px; border-radius: 10px; font-weight: 600; box-shadow: 0 8px 30px #0005; }
@media (prefers-reduced-motion: reduce) { .side { transition: none; } html { scroll-behavior: auto; } }
html { scroll-behavior: smooth; }

/* ======================= theme polish + motion ======================= */
body { background: var(--bg); }
.btn.primary { background: linear-gradient(135deg, var(--brand), color-mix(in srgb, var(--brand) 55%, var(--accent-2))); border-color: transparent; box-shadow: 0 6px 18px var(--glow); transition: transform .15s, box-shadow .15s, filter .15s; }
.btn.primary:hover { transform: translateY(-1px); box-shadow: 0 10px 26px var(--glow); filter: brightness(1.05); }
.btn:active { transform: translateY(0) scale(.98); }
.hero h1 em { background: linear-gradient(100deg, var(--brand), var(--accent-2) 55%, var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.eyebrow { background: linear-gradient(100deg, var(--brand), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.card { transition: border-color .2s, box-shadow .2s, transform .2s; }
.band { background: linear-gradient(120deg, var(--brand), color-mix(in srgb, var(--brand) 50%, var(--accent-2)) 60%, var(--accent)); position: relative; overflow: hidden; }
.band::before, .band::after { content: ""; position: absolute; width: 260px; height: 260px; border-radius: 50%; border: 36px solid #ffffff1c; animation: spin 40s linear infinite; }
.band::before { left: -90px; top: -110px; } .band::after { right: -100px; bottom: -130px; animation-direction: reverse; }
.band > * { position: relative; z-index: 1; }
.band .btn { color: var(--brand); background: #fff; }
:root[data-theme="dark"] .band .btn, :root:not([data-theme="light"]) .band .btn { color: #1b1650; }
.band h2, .band p { color: #fff; }

/* aurora behind the hero */
.pub-main { position: relative; overflow-x: clip; }
.aurora { position: absolute; inset: 0 0 auto 0; height: 760px; z-index: 0; pointer-events: none; overflow: hidden; mask-image: linear-gradient(#000 55%, transparent); -webkit-mask-image: linear-gradient(#000 55%, transparent); }
.aurora i { position: absolute; border-radius: 50%; filter: blur(70px); opacity: .55; animation: drift 18s ease-in-out infinite alternate; }
.aurora i:nth-child(1) { width: 520px; height: 520px; left: -120px; top: -160px; background: var(--brand); opacity: .28; }
.aurora i:nth-child(2) { width: 460px; height: 460px; right: -100px; top: -120px; background: var(--accent-2); opacity: .2; animation-duration: 23s; animation-delay: -6s; }
.aurora i:nth-child(3) { width: 380px; height: 380px; left: 42%; top: 120px; background: var(--accent); opacity: .16; animation-duration: 27s; animation-delay: -12s; }
.wrap { position: relative; z-index: 1; }
@keyframes drift { to { transform: translate(60px, 50px) scale(1.12); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }
.hero .sample { animation: floaty 7s ease-in-out infinite; box-shadow: var(--shadow); }
.hero-wheel { position: absolute; right: -90px; top: -30px; width: 520px; height: 520px; color: var(--brand); opacity: .07; z-index: -1; animation: spin 70s linear infinite; transform-origin: 50% 50%; will-change: transform; pointer-events: none; }
.hero { position: relative; }
@media (max-width: 900px) { .hero-wheel { width: 340px; height: 340px; right: -60px; top: -10px; opacity: .16; z-index: 0; } .hero > div, .hero > .sample { position: relative; z-index: 1; } }
[data-theme="dark"] .hero-wheel { opacity: .12; }
.hero .sample .bar > i { transform-origin: left; animation: grow 1.4s .4s cubic-bezier(.2,.8,.2,1) both; }
@keyframes grow { from { transform: scaleX(0); } }
.pulse-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--ok); margin-right: 7px; box-shadow: 0 0 0 0 var(--ok); animation: ping 2s infinite; }
@keyframes ping { 70% { box-shadow: 0 0 0 9px #0000; } 100% { box-shadow: 0 0 0 0 #0000; } }

/* scroll reveal */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); transition-delay: var(--d, 0s); }
.reveal.in { opacity: 1; transform: none; }
.reveal.from-l { transform: translateX(-34px); } .reveal.from-r { transform: translateX(34px); }
.reveal.from-l.in, .reveal.from-r.in { transform: none; }

/* ======================= how it works: UI mock-ups ======================= */
.how { display: grid; grid-template-columns: .85fr 1.15fr; gap: 40px; align-items: center; margin: 0 0 64px; }
.how:nth-child(even) { grid-template-columns: 1.15fr .85fr; }
.how:nth-child(even) .how-text { order: 2; }
@media (max-width: 900px) { .how, .how:nth-child(even) { grid-template-columns: 1fr; gap: 20px; } .how:nth-child(even) .how-text { order: 0; } }
.how-num { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: linear-gradient(135deg, var(--brand), var(--accent-2)); color: #fff; font-weight: 800; font-size: 18px; margin-bottom: 12px; box-shadow: 0 8px 20px var(--glow); }
.how-text h3 { font-size: 26px; letter-spacing: -.02em; margin: 0 0 8px; }
.how-text p { color: var(--muted); font-size: 16.5px; margin: 0 0 14px; }
.how-text ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 7px; }
.how-text li { display: flex; gap: 9px; align-items: flex-start; font-size: 15px; }
.how-text li .icon { color: var(--ok); margin-top: 3px; }
.win { background: var(--card); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); overflow: hidden; position: relative; }
.win-bar { display: flex; align-items: center; gap: 6px; padding: 9px 12px; background: color-mix(in srgb, var(--bg) 70%, var(--card)); border-bottom: 1px solid var(--line); }
.win-bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.win-bar i:nth-child(1) { background: #ff6159; } .win-bar i:nth-child(2) { background: #ffbd2e; } .win-bar i:nth-child(3) { background: #27c93f; }
.win-bar span { margin-left: 8px; font-size: 12px; color: var(--muted); background: var(--bg); border-radius: 6px; padding: 2px 10px; }
.win .tagi { position: absolute; right: 10px; bottom: 8px; font-size: 10.5px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); opacity: .8; }
.mock { padding: 16px; font-size: 13px; line-height: 1.4; pointer-events: none; user-select: none; }
.mock h5 { margin: 0 0 10px; font-size: 16px; letter-spacing: -.01em; }
.mock .mrow { display: flex; align-items: center; gap: 8px; }
.mock .msub { border: 1px solid var(--line); border-radius: 10px; margin-bottom: 8px; background: var(--bg); overflow: hidden; }
.mock .msub > .mh { display: flex; align-items: center; gap: 8px; padding: 8px 11px; font-weight: 700; }
.mock .msub > .mh span.c { margin-left: auto; color: var(--muted); font-weight: 500; font-size: 12px; }
.mock .mch { display: flex; align-items: center; gap: 9px; padding: 6px 11px 6px 30px; border-top: 1px solid var(--line); background: var(--card); }
.cb { width: 15px; height: 15px; border: 1.6px solid var(--muted); border-radius: 4px; flex: none; position: relative; }
.cb.on { background: var(--brand); border-color: var(--brand); }
.cb.on::after { content: ""; position: absolute; left: 4px; top: 1px; width: 4px; height: 8px; border: solid #fff; border-width: 0 2px 2px 0; transform: rotate(45deg); }
.cb.tick { animation: tick 6s infinite; animation-delay: var(--t, 0s); }
.cb.tick::after { content: ""; position: absolute; left: 4px; top: 1px; width: 4px; height: 8px; border: solid #fff; border-width: 0 2px 2px 0; transform: rotate(45deg); opacity: 0; animation: tickmark 6s infinite; animation-delay: var(--t, 0s); }
@keyframes tick { 0%, 8% { background: transparent; border-color: var(--muted); } 12%, 92% { background: var(--brand); border-color: var(--brand); } 100% { background: transparent; border-color: var(--muted); } }
@keyframes tickmark { 0%, 8% { opacity: 0; } 12%, 92% { opacity: 1; } 100% { opacity: 0; } }
.mset { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 10px; }
.mchip { border: 1px solid var(--line); background: var(--bg); border-radius: 8px; padding: 5px 10px; font-weight: 600; }
.mbtn { margin-left: auto; background: linear-gradient(135deg, var(--brand), var(--accent-2)); color: #fff; border-radius: 9px; padding: 7px 14px; font-weight: 700; animation: nudge 3s ease-in-out infinite; }
@keyframes nudge { 0%, 70%, 100% { transform: none; } 80% { transform: scale(1.07); } 90% { transform: scale(.98); } }
.mtest { display: grid; grid-template-columns: 1fr 112px; gap: 10px; }
@media (max-width: 480px) { .mtest { grid-template-columns: 1fr; } }
.mtop { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; font-weight: 700; }
.mtimer { margin-left: auto; font-variant-numeric: tabular-nums; font-weight: 800; color: var(--brand); }
.mtimer::before { content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--bad); margin-right: 6px; animation: ping 1.4s infinite; }
.mq { border: 1px solid var(--line); border-radius: 10px; padding: 11px; background: var(--bg); }
.mq .mm { color: var(--muted); font-size: 11.5px; margin-bottom: 4px; }
.mq .mstem { font-weight: 700; margin-bottom: 9px; font-size: 13.5px; }
.mopt { display: flex; align-items: center; gap: 9px; border: 1.5px solid var(--line); border-radius: 9px; padding: 6px 9px; margin-bottom: 6px; background: var(--card); }
.mopt b { width: 20px; height: 20px; border-radius: 50%; border: 1.5px solid var(--line); display: grid; place-items: center; font-size: 11px; text-transform: uppercase; flex: none; }
.mopt.pick { animation: pick 7s infinite; animation-delay: var(--t, 0s); }
.mopt.pick b { animation: pickb 7s infinite; animation-delay: var(--t, 0s); }
@keyframes pick { 0%, 10% { border-color: var(--line); background: var(--card); } 16%, 88% { border-color: var(--brand); background: var(--sel); } 100% { border-color: var(--line); background: var(--card); } }
@keyframes pickb { 0%, 10% { background: transparent; color: inherit; } 16%, 88% { background: var(--brand); color: #fff; border-color: var(--brand); } 100% { background: transparent; color: inherit; } }
.mnav { display: flex; gap: 6px; margin-top: 8px; }
.mnav span { border: 1px solid var(--line); border-radius: 8px; padding: 4px 9px; font-weight: 600; font-size: 12px; background: var(--card); }
.mnav .pr { margin-left: auto; background: var(--brand); color: #fff; border-color: transparent; }
.mpal { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; align-content: start; }
.mpal span { height: 22px; border-radius: 6px; border: 1.5px solid var(--line); display: grid; place-items: center; font-size: 10.5px; font-weight: 700; }
.mpal .a { background: var(--ok-bg); border-color: var(--ok); color: var(--ok); }
.mpal .f { background: var(--warn-bg); border-color: var(--warn); color: var(--warn); }
.mpal .c { outline: 2px solid var(--brand); outline-offset: 1px; }
.mpal .live { animation: fillcell 7s infinite; animation-delay: var(--t, 0s); }
@keyframes fillcell { 0%, 14% { background: transparent; border-color: var(--line); color: inherit; } 18%, 88% { background: var(--ok-bg); border-color: var(--ok); color: var(--ok); } 100% { background: transparent; border-color: var(--line); color: inherit; } }
.mscore { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 8px; margin-bottom: 10px; }
.mscore > div { border: 1px solid var(--line); border-radius: 10px; padding: 9px 11px; background: var(--bg); }
.mscore b { display: block; font-size: 22px; letter-spacing: -.02em; }
.mscore small { color: var(--muted); text-transform: uppercase; letter-spacing: .05em; font-size: 10px; }
.mbars { display: grid; gap: 7px; margin-bottom: 10px; }
.mbars > div { display: grid; grid-template-columns: 74px 1fr 34px; gap: 8px; align-items: center; }
.mbar { height: 8px; border-radius: 99px; background: var(--line); overflow: hidden; }
.mbar i { display: block; height: 100%; background: var(--ok); border-radius: 99px; transform-origin: left; }
.reveal.in .mbar i, .reveal.in .mline { animation: grow 1.3s .3s cubic-bezier(.2,.8,.2,1) both; }
.mrev { border: 1px solid var(--line); border-radius: 10px; padding: 9px 11px; background: var(--bg); }
.mrev .mrow { margin-bottom: 4px; }
.mexp { background: var(--sel); border-radius: 8px; padding: 6px 9px; font-size: 12px; margin-top: 6px; }
.mdash { display: grid; grid-template-columns: 76px 1fr; gap: 12px; }
@media (max-width: 480px) { .mdash { grid-template-columns: 1fr; } .mdash .mside { display: none; } }
.mside { display: grid; gap: 5px; align-content: start; }
.mside span { border-radius: 8px; padding: 6px 8px; font-weight: 600; color: var(--muted); font-size: 12px; }
.mside span.on { background: var(--sel); color: var(--brand); }
.mtiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; margin-bottom: 10px; }
.mtiles > div { border: 1px solid var(--line); border-radius: 9px; padding: 7px 9px; background: var(--bg); }
.mtiles b { display: block; font-size: 18px; } .mtiles small { color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: .05em; }
.mchart { border: 1px solid var(--line); border-radius: 10px; padding: 8px; background: var(--bg); margin-bottom: 8px; }
.mchart svg { display: block; width: 100%; height: 74px; }
.mline { stroke-dasharray: 1200; transform-origin: left; }
.reveal.in .mline { animation: draw 2s .3s ease-out both; }
@keyframes draw { from { stroke-dashoffset: 1200; } to { stroke-dashoffset: 0; } }
.mweak { display: grid; gap: 5px; }
.mweak > div { display: flex; align-items: center; gap: 8px; border: 1px solid var(--line); border-radius: 8px; padding: 5px 9px; background: var(--bg); }
.mweak span.pill { margin-left: auto; }

/* ======================= evaluator flow: lit step by step ======================= */
.flow.live .node { animation: stepglow 7.5s infinite; animation-delay: calc(var(--i, 0) * 1.25s); }
@keyframes stepglow { 0%, 16%, 100% { border-color: var(--line); box-shadow: none; transform: none; } 5%, 11% { border-color: var(--brand); box-shadow: 0 8px 26px var(--glow); transform: translateY(-3px); } }
.flow.live .arrow i { animation: nudgex 1.6s ease-in-out infinite; }
@keyframes nudgex { 50% { transform: translateX(6px); } }
@media (max-width: 860px) { .flow.live .arrow i { animation: none; } }

@media (prefers-reduced-motion: reduce) {
  .aurora i, .hero .sample, .band::before, .band::after, .flow.live .node, .flow.live .arrow i, .mbtn, .cb.tick, .cb.tick::after, .mopt.pick, .mopt.pick b, .mpal .live, .pulse-dot, .mtimer::before { animation: none !important; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .reveal.in .mbar i, .reveal.in .mline, .hero .sample .bar > i { animation: none; }
  .mline { stroke-dasharray: none; }
}

/* ---------- navbar: a floating card, copied from Arcloop ---------- */
.navwrap { position: sticky; top: 0; z-index: 50; padding: 16px; pointer-events: none; }
.navcard { pointer-events: auto; max-width: 1440px; margin: 0 auto; min-height: 84px; display: flex; align-items: center; gap: 16px; padding: 0 24px; background: var(--card); border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow); }
.navcard .logo { font-family: var(--nav-font); font-size: 24px; font-weight: 700; letter-spacing: -.01em; }
.navcard .logo svg { width: 44px; height: 44px; }
.navlinks { display: flex; gap: 4px; margin-left: 16px; }
.navlinks a, .drawer-links a { font-family: var(--nav-font); font-weight: 500; font-size: 16px; letter-spacing: .01em; color: var(--muted); padding: 8px 12px; border-radius: 10px; }
.navlinks a:hover, .navlinks a.on, .drawer-links a:hover, .drawer-links a.on { color: var(--ink); background: var(--sel); }
.navright { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.navright .wide { display: contents; }
.navsep { width: 1px; height: 24px; margin: 0 4px; background: var(--line); }
.btn.nav { min-height: 40px; padding: 6px 18px; font-family: var(--nav-font); font-weight: 600; font-size: 15px; letter-spacing: .01em; white-space: nowrap; }
.btn.outline { color: var(--brand); border-color: var(--brand); background: transparent; }
.btn.outline:hover { background: var(--sel); }
.navburger { display: none; }
.drawer, .scrim-d { display: none; }
@media (max-width: 900px) {
  .navcard { min-height: 68px; padding: 0 14px; }
  .navlinks, .navright .wide { display: none; }
  .navburger { display: inline-grid; }
  .drawer { display: flex; flex-direction: column; gap: 6px; position: fixed; z-index: 70; top: 0; right: 0; bottom: 0; width: min(86vw, 340px); padding: 24px; background: var(--bg); transform: translateX(104%); transition: transform .24s cubic-bezier(.2, .7, .2, 1); box-shadow: 0 0 40px #0006; }
  .scrim-d { display: block; position: fixed; inset: 0; z-index: 60; background: #0008; opacity: 0; pointer-events: none; transition: opacity .24s; }
  .drawer-open .drawer { transform: none; }
  .drawer-open .scrim-d { opacity: 1; pointer-events: auto; }
  .drawer-links { display: flex; flex-direction: column; gap: 2px; margin: 18px 0; }
  .drawer-links a { font-size: 17px; padding: 12px; }
  .drawer .dbtns { margin-top: auto; display: grid; gap: 10px; }
}
@media (prefers-reduced-motion: reduce) { .drawer, .scrim-d { transition: none; } }

/* ---------- phone: bottom tab bar for the signed-in app ---------- */
.bnav { display: none; }
@media (max-width: 860px) {
  .bnav { display: flex; gap: 4px; position: fixed; left: 0; right: 0; bottom: 0; z-index: 25; background: var(--card); border-top: 1px solid var(--line); padding: 6px 8px calc(6px + env(safe-area-inset-bottom)); box-shadow: 0 -8px 24px #0000001a; }
  .bnav a { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 7px 4px; border-radius: 12px; font-size: 11.5px; font-weight: 700; color: var(--muted); }
  .bnav a .icon { width: 22px; height: 22px; }
  .bnav a.on { color: var(--brand); background: var(--sel); }
  .dmain { padding-bottom: calc(92px + env(safe-area-inset-bottom)); }
  .app.focus .bnav { display: none; }
  .app.focus .dmain { padding-bottom: 60px; }
  .toast { bottom: 92px; }
}

/* ---------- screenshots gallery ---------- */
.showcase { margin-top: 56px; }
.showcase h3 { font-size: 22px; letter-spacing: -.02em; margin: 0 0 4px; }
.snaps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; margin-top: 18px; }
.phones { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 18px; align-items: start; }
.snap { margin: 0; display: grid; gap: 12px; align-content: start; }
.snap.wide { grid-column: 1 / -1; }
.snap .win img { display: block; width: 100%; height: auto; cursor: zoom-in; }
.snap figcaption { display: grid; gap: 2px; font-size: 14.5px; color: var(--muted); }
.snap figcaption b { color: var(--ink); font-size: 16px; }
.phone { border: 8px solid #1a1d33; outline: 1px solid var(--line); border-radius: 36px; overflow: hidden; background: var(--card); box-shadow: var(--shadow); }
.phone img { display: block; width: 100%; height: auto; cursor: zoom-in; }
img.shot-d { display: none !important; }
:root[data-theme="dark"] img.shot-l { display: none !important; } :root[data-theme="dark"] img.shot-d { display: block !important; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) img.shot-l { display: none !important; } :root:not([data-theme="light"]) img.shot-d { display: block !important; } }
@media (max-width: 900px) { .snaps { grid-template-columns: 1fr; } .phones { grid-template-columns: repeat(2, 1fr); gap: 16px; } }
.lb { position: fixed; inset: 0; z-index: 200; background: #000c; display: grid; place-items: center; padding: 24px; cursor: zoom-out; }
.lb img { max-width: min(96vw, 1500px); max-height: 92vh; border-radius: 12px; background: #fff; box-shadow: 0 20px 80px #000a; }
.lb .lbx { position: absolute; top: 16px; right: 16px; }
@media (max-width: 560px) { .g4 { grid-template-columns: repeat(2, 1fr); gap: 10px; } .stat .v { font-size: 24px; } .stat .l { font-size: 11.5px; } .g4 .card { padding: 14px; } }