/* Max English TMA — one stylesheet. Colors follow the Telegram theme; the block color (--accent) is set per screen. */
:root {
  color-scheme: light dark;
  --bg: var(--tg-theme-secondary-bg-color, #f2f4f7);
  --card: var(--tg-theme-section-bg-color, #ffffff);
  --ink: var(--tg-theme-text-color, #18212b);
  --muted: var(--tg-theme-hint-color, #687686);
  --line: rgba(128, 128, 128, .22);
  --chip: rgba(128, 128, 128, .12);
  --btn: var(--tg-theme-button-color, #2f7de1);
  --btn-ink: var(--tg-theme-button-text-color, #fff);
  --link: var(--tg-theme-link-color, #2f7de1);
  --accent: #3fae6a; --accent-soft: rgba(63, 174, 106, .14); --accent-ink: #1f6b3f;
  --good: #1f9254; --good-soft: rgba(31, 146, 84, .14); --bad: #d64545; --bad-soft: rgba(214, 69, 69, .14); --gold: #f5b301;
  --S: #1d5fbf; --S-soft: #e3eefc; --V: #c2255c; --V-soft: #fbe4ec; --O: #b45309; --O-soft: #fdeedd;
  --M: #0b7f75; --M-soft: #dcf3f0; --P: #7b45b8; --P-soft: #f0e7fa; --T: #8a6500; --T-soft: #f8efcf;
  --tabh: 62px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: var(--tg-theme-secondary-bg-color, #0e1318); --card: var(--tg-theme-section-bg-color, #19212a);
    --ink: var(--tg-theme-text-color, #e8eef4); --muted: var(--tg-theme-hint-color, #8e9cab);
    --S: #7fb0ff; --V: #ff7aa6; --O: #ffab5c; --M: #4fd1c1; --P: #c49bff; --T: #e8c44f;
    --S-soft: #1a2a42; --V-soft: #3a1a28; --O-soft: #3a2a14; --M-soft: #123330; --P-soft: #2c1f3d; --T-soft: #352c10;
    --accent-ink: var(--accent);
  }
}
:root.dark {
  --S: #7fb0ff; --V: #ff7aa6; --O: #ffab5c; --M: #4fd1c1; --P: #c49bff; --T: #e8c44f;
  --S-soft: #1a2a42; --V-soft: #3a1a28; --O-soft: #3a2a14; --M-soft: #123330; --P-soft: #2c1f3d; --T-soft: #352c10;
  --accent-ink: var(--accent);
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; background: var(--bg); color: var(--ink); }
body { font: 16px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; -webkit-text-size-adjust: 100%; }
button, input, textarea, select { font: inherit; color: inherit; }
a { color: var(--link); text-decoration: none; }
.app { max-width: 520px; margin: 0 auto; padding: 12px 16px calc(var(--tabh) + 28px + env(safe-area-inset-bottom)); min-height: 100vh; }
.app.full { padding-bottom: calc(96px + env(safe-area-inset-bottom)); }
[hidden] { display: none !important; }

/* ───── tab bar ───── */
.tabbar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 20; display: flex; justify-content: center; gap: 0; padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
  background: var(--card); border-top: 1px solid var(--line); }
.tabbar a { flex: 1; max-width: 160px; display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 4px 0; color: var(--muted); font-size: 11.5px; font-weight: 600; border-radius: 10px; position: relative; }
.tabbar a.on { color: var(--btn); }
.tabbar a .dot { position: absolute; top: 2px; left: calc(50% + 7px); min-width: 16px; height: 16px; padding: 0 4px; border-radius: 99px; background: var(--bad); color: #fff; font-size: 10px; line-height: 16px; text-align: center; }
body.hide-tabs .tabbar { display: none; }

/* ───── top bar ───── */
.top { display: flex; align-items: center; gap: 8px; margin: 2px 0 12px; min-height: 36px; }
.top .back { flex: none; width: 34px; height: 34px; border-radius: 50%; border: 0; background: var(--chip); font-size: 20px; line-height: 1; cursor: pointer; display: grid; place-items: center; }
.top h1 { margin: 0; font-size: 20px; letter-spacing: -.01em; flex: 1; min-width: 0; }
.top .sub { color: var(--muted); font-size: 13px; }
h1.big { font-size: 24px; margin: 4px 0 2px; letter-spacing: -.02em; }
.lead { color: var(--muted); margin: 0 0 14px; font-size: 14.5px; }
h2.sect { font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 20px 4px 8px; font-weight: 700; }

/* ───── cards, buttons, bits ───── */
.card { background: var(--card); border-radius: 16px; padding: 14px 16px; box-shadow: 0 1px 2px rgba(0, 0, 0, .04); margin-bottom: 12px; }
.card.flat { padding: 0; overflow: hidden; }
.btn { display: block; width: 100%; border: 0; border-radius: 14px; padding: 13px 16px; background: var(--btn); color: var(--btn-ink); font-weight: 700; cursor: pointer; text-align: center; }
.btn.accent { background: var(--accent); color: #fff; }
.btn.ghost { background: var(--chip); color: var(--ink); }
.btn.sm { display: inline-block; width: auto; padding: 8px 14px; border-radius: 10px; font-size: 14px; }
.btn[disabled] { opacity: .45; cursor: default; }
.btn + .btn { margin-top: 8px; }
.pill { display: inline-block; font-size: 11.5px; font-weight: 700; padding: 2px 8px; border-radius: 99px; background: var(--chip); color: var(--muted); white-space: nowrap; }
.pill.acc { background: var(--accent-soft); color: var(--accent); }
.pill.good { background: var(--good-soft); color: var(--good); }
.pill.bad { background: var(--bad-soft); color: var(--bad); }
.bar { height: 6px; border-radius: 99px; background: var(--chip); overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--accent); border-radius: 99px; transition: width .5s; }
.stars { color: var(--gold); letter-spacing: 1px; font-size: 13px; }
.stars .off { color: var(--chip); }
.muted { color: var(--muted); }
.center { text-align: center; }
.empty { text-align: center; color: var(--muted); padding: 36px 16px; }
.empty .big { font-size: 40px; margin-bottom: 6px; }
.skel { height: 74px; border-radius: 16px; background: linear-gradient(90deg, var(--chip), transparent, var(--chip)); background-size: 200% 100%; animation: sk 1.2s infinite; margin-bottom: 12px; }
@keyframes sk { to { background-position: -200% 0; } }
.err { background: var(--bad-soft); color: var(--bad); border-radius: 12px; padding: 10px 12px; margin: 10px 0; font-size: 14px; }
.ring { position: relative; width: 64px; height: 64px; flex: none; }
.ring svg { transform: rotate(-90deg); }
.ring .v { position: absolute; inset: 0; display: grid; place-items: center; font-weight: 800; font-size: 15px; }

/* ───── Main: roadmaps ───── */
.rm { display: flex; align-items: center; gap: 14px; padding: 16px; border-radius: 18px; margin-bottom: 12px; color: #fff; background: var(--accent); position: relative; overflow: hidden; cursor: pointer; }
.rm.dim { background: var(--card); color: var(--ink); box-shadow: 0 1px 2px rgba(0,0,0,.04); }
.rm .t { flex: 1; min-width: 0; }
.rm .t b { display: block; font-size: 19px; letter-spacing: -.01em; }
.rm .t span { font-size: 13.5px; opacity: .88; }
.rm .ring .v { font-size: 14px; }
.rm.dim .ring circle.bg { stroke: var(--line); }
.rm .soon { font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; padding: 2px 8px; border-radius: 99px; background: var(--accent-soft); color: var(--accent); }
.access { display: flex; align-items: center; gap: 12px; }
.access .e { font-size: 26px; }
.access b { display: block; }
.access span { color: var(--muted); font-size: 13.5px; }

/* ───── blocks list ───── */
.block { display: flex; gap: 12px; align-items: center; padding: 14px 14px 14px 12px; border-radius: 16px; background: var(--card); margin-bottom: 10px; cursor: pointer; border-left: 5px solid var(--accent); box-shadow: 0 1px 2px rgba(0,0,0,.04); }
.block.locked { opacity: .72; }
.block .n { flex: none; width: 40px; height: 40px; border-radius: 12px; background: var(--accent); color: #fff; display: grid; place-items: center; font-weight: 800; font-size: 18px; }
.block .t { flex: 1; min-width: 0; }
.block .t b { display: block; }
.block .t .row { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 12.5px; margin-top: 3px; }
.block .t .bar { flex: 1; }

/* ───── path (block map) ───── */
.hero { border-radius: 18px; padding: 16px; background: var(--accent); color: #fff; margin-bottom: 16px; }
.hero .k { font-size: 11.5px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; opacity: .85; }
.hero h1 { margin: 2px 0 0; font-size: 26px; letter-spacing: -.02em; }
.hero .sub { opacity: .9; font-size: 14px; margin-top: 2px; }
.hero .bar { background: rgba(255, 255, 255, .3); margin-top: 12px; }
.hero .bar i { background: #fff; }
.hero .level { float: right; background: #fff; color: var(--accent-ink, #333); font-weight: 800; font-size: 12px; padding: 2px 10px; border-radius: 99px; }
.path { position: relative; padding-left: 0; }
.node { display: flex; gap: 12px; align-items: stretch; position: relative; cursor: pointer; }
.node .rail { flex: none; width: 44px; display: flex; flex-direction: column; align-items: center; }
.node .rail::before, .node .rail::after { content: ""; width: 3px; flex: 1; background: var(--line); }
.node:first-child .rail::before { background: transparent; }
.node:last-child .rail::after { background: transparent; }
.node.done .rail::before, .node.done .rail::after { background: var(--accent); }
.node .dot { flex: none; width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; font-size: 15px; background: var(--card); border: 3px solid var(--line); color: var(--muted); margin: -1px 0; z-index: 1; }
.node.open .dot { border-color: var(--accent); color: var(--accent); }
.node.cur .dot { background: var(--accent); color: #fff; box-shadow: 0 0 0 5px var(--accent-soft); }
.node.done .dot { background: var(--accent); border-color: var(--accent); color: #fff; }
.node.lock .dot, .node.soon .dot { color: var(--muted); background: var(--chip); }
.node .body { flex: 1; min-width: 0; padding: 7px 0 7px; }
.node .card { margin: 0; padding: 10px 12px; display: flex; align-items: center; gap: 10px; }
.node.lock .card, .node.soon .card { opacity: .62; }
.node .card .tx { flex: 1; min-width: 0; }
.node .card .tx b { display: block; font-size: 15px; line-height: 1.25; }
.node .card .tx span { color: var(--muted); font-size: 12.5px; display: block; }
.node .card .tx span.need { color: var(--bad); }
.node .badges { display: flex; gap: 4px; flex: none; align-items: center; }
.node .chk { font-size: 11px; font-weight: 800; padding: 1px 6px; border-radius: 6px; background: var(--chip); color: var(--muted); }
.node .chk.on { background: var(--accent-soft); color: var(--accent); }
.node.test .card { background: var(--card); border: 1.5px dashed var(--line); }
.node.test.open .card, .node.test.done .card { border-style: solid; border-color: var(--accent); }
.node.test .dot { background: transparent; border: none; width: 44px; height: 48px; font-size: 26px; margin: -3px 0; }
.node.test.cur .dot, .node.test.done .dot { background: transparent; box-shadow: none; }
.node.test.lock .dot { filter: grayscale(1); opacity: .6; }
.node svg.medal { display: block; }

/* ───── lesson hub ───── */
.hub-hero { border-radius: 18px; padding: 16px 16px 14px; background: var(--accent); color: #fff; margin-bottom: 14px; }
.hub-hero .row { display: flex; justify-content: space-between; align-items: center; }
.hub-hero .k { font-size: 11.5px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; opacity: .85; }
.hub-hero .lv { background: #fff; color: var(--accent-ink, #333); font-weight: 800; font-size: 12px; padding: 2px 10px; border-radius: 99px; }
.hub-hero .num { font-size: 44px; font-weight: 800; line-height: 1; margin: 6px 0 2px; letter-spacing: -.02em; }
.hub-hero h1 { margin: 0; font-size: 22px; line-height: 1.15; letter-spacing: -.01em; }
.hub-hero .ru { opacity: .9; font-size: 14.5px; margin-top: 2px; }
.act { display: flex; align-items: center; gap: 14px; padding: 14px; border-radius: 16px; background: var(--card); margin-bottom: 10px; cursor: pointer; box-shadow: 0 1px 2px rgba(0,0,0,.04); }
.act .ic { flex: none; width: 46px; height: 46px; border-radius: 14px; background: var(--accent-soft); display: grid; place-items: center; font-size: 22px; }
.act .tx { flex: 1; min-width: 0; }
.act .tx b { display: block; font-size: 16.5px; }
.act .tx span { color: var(--muted); font-size: 13px; }
.act .st { flex: none; text-align: right; font-size: 12.5px; color: var(--muted); font-weight: 600; }
.act .st .ok { color: var(--good); font-weight: 800; }
.act.done .ic { background: var(--good-soft); }

/* ───── theory ───── */
.secnav { display: flex; gap: 6px; overflow-x: auto; padding: 2px 0 10px; margin: 0 -16px 4px; padding-left: 16px; padding-right: 16px; scrollbar-width: none; position: sticky; top: 0; z-index: 5; background: var(--bg); }
.secnav::-webkit-scrollbar { display: none; }
.secnav button { flex: none; border: 0; background: var(--card); border-radius: 99px; padding: 6px 12px; font-weight: 700; font-size: 13px; cursor: pointer; }
.secnav button.on { background: var(--accent); color: #fff; }
.theory { font-size: 16px; line-height: 1.55; -webkit-user-select: text; user-select: text; }
.theory p { margin: 8px 0; }
.theory h2 { font-size: 19px; line-height: 1.25; margin: 26px 0 8px; letter-spacing: -.01em; scroll-margin-top: 56px; }
.theory h2 .sec { display: inline-block; min-width: 24px; padding: 1px 7px; margin-right: 8px; border-radius: 8px; background: var(--accent); color: #fff; font-size: 14px; text-align: center; vertical-align: 2px; }
.theory h2 .ru { display: block; font-size: 14px; font-weight: 500; color: var(--muted); margin-top: 2px; }
.theory .th-intro { font-size: 16.5px; }
.theory .r { border-radius: 4px; padding: 0 3px; font-weight: 600; }
.r-S { color: var(--S); background: var(--S-soft); } .r-V { color: var(--V); background: var(--V-soft); } .r-O { color: var(--O); background: var(--O-soft); }
.r-M { color: var(--M); background: var(--M-soft); } .r-P { color: var(--P); background: var(--P-soft); } .r-T { color: var(--T); background: var(--T-soft); }
.r-AUX { color: var(--V); border: 1px dashed var(--V); padding: 0 3px; border-radius: 4px; }
.th-tablewrap { overflow-x: auto; margin: 10px -4px; padding: 0 4px; }
.theory table { width: 100%; border-collapse: collapse; font-size: 14.5px; margin: 0; }
.theory caption { caption-side: top; text-align: left; font-weight: 700; color: var(--accent); padding-bottom: 4px; }
.theory th { background: var(--accent-soft); color: var(--accent); text-align: left; padding: 6px 8px; white-space: nowrap; }
.theory td { padding: 6px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
.theory td .r { background: none; padding: 0; }
.theory th.role-S { background: var(--S-soft); color: var(--S); border-top: 3px solid var(--S); } .theory th.role-V { background: var(--V-soft); color: var(--V); border-top: 3px solid var(--V); }
.theory th.role-O { background: var(--O-soft); color: var(--O); border-top: 3px solid var(--O); } .theory th.role-M { background: var(--M-soft); color: var(--M); border-top: 3px solid var(--M); }
.theory th.role-P { background: var(--P-soft); color: var(--P); border-top: 3px solid var(--P); } .theory th.role-T { background: var(--T-soft); color: var(--T); border-top: 3px solid var(--T); }
.formula { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 10px 12px 12px; margin: 14px 0; }
.formula .ft-title { font-size: 11px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.formula .tiles { display: flex; align-items: stretch; }
.formula .tile { flex: 1; text-align: center; border-radius: 10px; padding: 7px 3px 6px; background: var(--chip); border-top: 4px solid var(--accent); min-width: 0; }
.formula .tile .k { font-weight: 800; font-size: 19px; line-height: 1.1; color: var(--accent); }
.formula .tile .l { font-size: 11px; font-weight: 700; }
.formula .tile .q { font-size: 11px; color: var(--muted); }
.formula .join { align-self: center; padding: 0 4px; font-weight: 800; color: var(--muted); }
.formula .note { font-size: 14px; color: var(--muted); margin-top: 8px; }
.formula .tile.role-S { background: var(--S-soft); border-top-color: var(--S); } .formula .tile.role-S .k { color: var(--S); }
.formula .tile.role-V { background: var(--V-soft); border-top-color: var(--V); } .formula .tile.role-V .k { color: var(--V); }
.formula .tile.role-O { background: var(--O-soft); border-top-color: var(--O); } .formula .tile.role-O .k { color: var(--O); }
.formula .tile.role-M { background: var(--M-soft); border-top-color: var(--M); } .formula .tile.role-M .k { color: var(--M); }
.formula .tile.role-P { background: var(--P-soft); border-top-color: var(--P); } .formula .tile.role-P .k { color: var(--P); }
.formula .tile.role-T { background: var(--T-soft); border-top-color: var(--T); } .formula .tile.role-T .k { color: var(--T); }
.rule { border-left: 4px solid var(--accent); background: var(--accent-soft); border-radius: 0 12px 12px 0; padding: 10px 14px; margin: 14px 0; font-weight: 600; }
.rule .tag, .callout .tag { display: block; font-size: 11px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); margin-bottom: 2px; }
.ex { margin: 12px 0; }
.ex .label { font-weight: 700; color: var(--accent); font-size: 14.5px; }
.ex ul { list-style: none; padding: 0; margin: 4px 0; }
.ex li { padding: 1px 0 1px 12px; border-left: 3px solid var(--accent); margin: 8px 0; }
.ex li .tr { display: block; color: var(--muted); font-size: 14px; }
.ex .note { font-size: 14px; color: var(--muted); }
.pairs { margin: 12px 0; }
.pairs .label { font-weight: 700; color: var(--accent); font-size: 14.5px; margin-bottom: 4px; }
.pair { border: 1px solid var(--line); border-radius: 12px; padding: 8px 12px; margin: 8px 0; background: var(--card); }
.pair .ctx { font-size: 13.5px; color: var(--muted); }
.pair .w { color: var(--bad); } .pair .w .txt { text-decoration: line-through; text-decoration-color: rgba(214, 69, 69, .55); }
.pair .ok { color: var(--good); font-weight: 600; }
.pair .mk { display: inline-block; width: 18px; font-weight: 800; }
.pair .why { font-size: 14px; color: var(--muted); margin-top: 4px; padding-top: 5px; border-top: 1px dashed var(--line); }
.callout { border-radius: 12px; padding: 10px 14px; margin: 14px 0; font-size: 15px; }
.callout.tip { background: rgba(58, 123, 213, .13); border-left: 4px solid #3a7bd5; } .callout.tip .tag { color: #3a7bd5; }
.callout.warning { background: rgba(224, 138, 0, .15); border-left: 4px solid #e08a00; } .callout.warning .tag { color: #d98200; }
.summary { background: var(--accent-soft); border-radius: 16px; padding: 12px 16px 10px; margin-top: 24px; }
.summary h3 { margin: 2px 0 4px; color: var(--accent); }
.summary ul { margin: 4px 0; padding-left: 20px; } .summary li { margin: 5px 0; }
.gloss .label { font-weight: 700; color: var(--accent); margin-bottom: 4px; }
.ge { border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: 12px; padding: 8px 12px; margin: 8px 0; background: var(--card); }
.ge .gh { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 8px; }
.ge .gw { font-weight: 800; font-size: 18px; color: var(--accent); }
.ge .gp { font-size: 12px; font-weight: 700; font-style: italic; color: var(--muted); }
.ge .gi { font-size: 13.5px; color: var(--muted); }
.ge .gu { font-size: 11px; font-weight: 700; color: var(--muted); border: 1px solid var(--line); border-radius: 99px; padding: 0 6px; }
.ge .gr { flex: 1; text-align: right; font-weight: 600; min-width: 90px; }
.ge .gadd { flex: none; width: 30px; height: 30px; border-radius: 50%; border: 0; background: var(--accent-soft); color: var(--accent); font-weight: 800; font-size: 17px; cursor: pointer; }
.ge .gadd.done { background: var(--good-soft); color: var(--good); }
.ge .gx { margin-top: 3px; } .ge .gx strong { color: var(--accent); }
.ge .gf { font-size: 14px; color: var(--muted); margin-top: 2px; }
.ge .gn { font-size: 14px; background: rgba(224, 138, 0, .14); border-radius: 8px; padding: 4px 9px; margin-top: 5px; }
.ge .gn .mk { display: inline-block; width: 16px; height: 16px; line-height: 16px; text-align: center; border-radius: 50%; background: #e08a00; color: #fff; font-weight: 800; font-size: 11px; margin-right: 6px; }
.endbar { margin-top: 22px; }

/* ───── practice ───── */
.task { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-radius: 16px; background: var(--card); margin-bottom: 8px; cursor: pointer; box-shadow: 0 1px 2px rgba(0,0,0,.04); }
.task .n { flex: none; width: 34px; height: 34px; border-radius: 10px; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; font-weight: 800; }
.task.done .n { background: var(--good); color: #fff; }
.task .tx { flex: 1; min-width: 0; } .task .tx b { display: block; font-size: 15.5px; }
.task .tx span { color: var(--muted); font-size: 12.5px; }
.task .st { flex: none; font-size: 13px; font-weight: 700; color: var(--muted); text-align: right; }
.dots { color: var(--accent); letter-spacing: 1px; font-size: 11px; } .dots .off { color: var(--line); }
.runner .instr { margin: 0 0 12px; } .runner .instr .ru { color: var(--muted); font-size: 14px; display: block; }
.q { background: var(--card); border-radius: 16px; padding: 12px 14px; margin-bottom: 10px; }
.q.ok { box-shadow: inset 0 0 0 2px var(--good); } .q.bad { box-shadow: inset 0 0 0 2px var(--bad); }
.q .no { font-size: 12px; font-weight: 800; color: var(--muted); margin-bottom: 2px; }
.q .pr { font-size: 16.5px; line-height: 1.5; }
.gap { display: inline-block; min-width: 64px; border-bottom: 2px solid var(--ink); }
.slot { display: inline-block; min-width: 76px; padding: 0 8px; margin: 0 2px; border-radius: 8px; border: 2px dashed var(--accent); color: var(--accent); font-weight: 700; text-align: center; cursor: pointer; vertical-align: baseline; background: transparent; line-height: 1.5; }
.slot.full { border-style: solid; background: var(--accent-soft); }
.slot.ok { border-color: var(--good); color: var(--good); background: var(--good-soft); } .slot.bad { border-color: var(--bad); color: var(--bad); background: var(--bad-soft); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 12px; position: sticky; top: 0; z-index: 4; background: var(--bg); padding: 8px 0; }
.chip { border: 1.5px solid var(--line); background: var(--card); border-radius: 10px; padding: 6px 12px; font-weight: 700; cursor: pointer; }
.chip.sel { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }
.chip.used { opacity: .35; }
.opts { display: grid; gap: 8px; margin-top: 8px; }
.opts.wrap { grid-template-columns: 1fr 1fr; }
.opt { text-align: left; border: 1.5px solid var(--line); background: transparent; border-radius: 12px; padding: 10px 12px; cursor: pointer; font-weight: 500; }
.opt.right { border-color: var(--good); background: var(--good-soft); } .opt.wrong { border-color: var(--bad); background: var(--bad-soft); } .opt.dim { opacity: .5; }
.inp { width: 100%; border: 1.5px solid var(--line); background: var(--bg); border-radius: 12px; padding: 10px 12px; resize: none; outline: none; margin-top: 8px; }
.inp:focus { border-color: var(--accent); }
.inp.ok { border-color: var(--good); } .inp.bad { border-color: var(--bad); }
.hintchip { display: inline-block; font-size: 12.5px; font-weight: 800; letter-spacing: .04em; padding: 1px 8px; border-radius: 8px; background: var(--accent-soft); color: var(--accent); margin-left: 6px; }
.fbk { margin-top: 8px; font-size: 14.5px; border-radius: 12px; padding: 8px 12px; }
.fbk.ok { background: var(--good-soft); } .fbk.bad { background: var(--bad-soft); }
.fbk .ans { font-weight: 700; } .fbk .yours { color: var(--muted); font-size: 13.5px; }
.fbk button { margin-top: 6px; }
.passage { background: var(--card); border-radius: 14px; padding: 12px 14px; line-height: 2; margin-bottom: 12px; }
.passage sup { color: var(--accent); font-weight: 800; font-size: 11px; } .passage strong { border-bottom: 2px solid var(--accent); }
.tiles { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.tile-t { border: 1.5px solid var(--line); background: var(--card); border-radius: 10px; padding: 6px 11px; font-weight: 600; cursor: pointer; }
.zone { min-height: 46px; border-radius: 12px; border: 2px dashed var(--line); padding: 6px; display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.zone.ok { border-color: var(--good); } .zone.bad { border-color: var(--bad); }
.tile-t.ghost { opacity: .25; }
.ex-box { background: var(--accent-soft); border-radius: 12px; padding: 8px 12px; margin-bottom: 12px; font-size: 14.5px; }
.checklist label { display: flex; align-items: center; gap: 8px; margin: 6px 0; font-size: 15px; }
.checklist input { width: 20px; height: 20px; accent-color: var(--accent); }
.model { background: var(--good-soft); border-radius: 12px; padding: 8px 12px; margin-top: 8px; font-size: 14.5px; }
.bottombar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 25; padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); background: linear-gradient(transparent, var(--bg) 28%); }
.bottombar .in { max-width: 520px; margin: 0 auto; display: flex; gap: 8px; align-items: center; }
.bottombar .score { font-weight: 800; flex: none; min-width: 64px; }
.res { text-align: center; padding: 18px 16px; }
.res .big { font-size: 46px; font-weight: 800; letter-spacing: -.02em; }

/* ───── words ───── */
.seg { display: flex; background: var(--chip); border-radius: 12px; padding: 3px; margin-bottom: 14px; }
.seg button { flex: 1; border: 0; background: transparent; border-radius: 10px; padding: 8px; font-weight: 700; cursor: pointer; color: var(--muted); }
.seg button.on { background: var(--card); color: var(--ink); box-shadow: 0 1px 2px rgba(0,0,0,.08); }
.addrow { display: grid; gap: 8px; }
.addrow input { width: 100%; border: 1.5px solid var(--line); background: var(--bg); border-radius: 12px; padding: 10px 12px; outline: none; }
.addrow input:focus { border-color: var(--btn); }
.wc { background: var(--card); border-radius: 14px; padding: 10px 14px; margin-bottom: 8px; cursor: pointer; }
.wc .h { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.wc .w { font-weight: 800; font-size: 17px; } .wc .tr { color: var(--muted); flex: 1; text-align: right; }
.wc .ex { font-size: 14px; color: var(--muted); margin: 4px 0 0; }
.wc .meta { display: flex; gap: 6px; margin-top: 6px; align-items: center; font-size: 12px; color: var(--muted); }
.wc .box { display: inline-flex; gap: 2px; } .wc .box i { width: 14px; height: 4px; border-radius: 2px; background: var(--line); } .wc .box i.on { background: var(--good); }
.flash { text-align: center; padding: 28px 18px; min-height: 260px; display: flex; flex-direction: column; justify-content: center; }
.flash .w { font-size: 34px; font-weight: 800; letter-spacing: -.02em; }
.flash .ipa { color: var(--muted); margin-top: 2px; }
.flash .ex { color: var(--muted); margin-top: 14px; font-size: 15px; }
.flash .tr { font-size: 22px; font-weight: 700; margin-top: 16px; color: var(--accent); }

/* ───── progress ───── */
.stat { display: flex; gap: 10px; margin-bottom: 12px; }
.stat .s { flex: 1; background: var(--card); border-radius: 14px; padding: 10px 12px; }
.stat .s b { display: block; font-size: 22px; letter-spacing: -.02em; } .stat .s span { color: var(--muted); font-size: 12.5px; }
.lrow { display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-top: 1px solid var(--line); cursor: pointer; }
.lrow:first-child { border-top: 0; }
.lrow .n { flex: none; width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 13px; background: var(--accent); }
.lrow .t { flex: 1; min-width: 0; font-weight: 600; font-size: 14.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lrow .cells { display: flex; gap: 5px; flex: none; }
.cell { min-width: 34px; text-align: center; font-size: 11.5px; font-weight: 800; padding: 2px 5px; border-radius: 7px; background: var(--chip); color: var(--muted); }
.cell.full { background: var(--good-soft); color: var(--good); } .cell.part { background: var(--accent-soft); color: var(--accent); }
.legend { display: flex; gap: 10px; font-size: 12px; color: var(--muted); padding: 6px 12px 0; }
.weak { display: flex; justify-content: space-between; gap: 8px; padding: 9px 0; border-top: 1px solid var(--line); cursor: pointer; }
.weak:first-child { border-top: 0; }

/* ───── sheet, toast, word pill ───── */
.sheet-bg { position: fixed; inset: 0; z-index: 40; background: rgba(0, 0, 0, .45); }
.sheet { position: fixed; left: 0; right: 0; bottom: 0; z-index: 41; background: var(--card); border-radius: 20px 20px 0 0; padding: 18px 18px calc(18px + env(safe-area-inset-bottom)); max-width: 520px; margin: 0 auto; max-height: 85vh; overflow: auto; animation: up .2s; }
@keyframes up { from { transform: translateY(30px); opacity: 0; } }
.sheet h3 { margin: 0 0 6px; font-size: 19px; } .sheet p { margin: 6px 0 12px; color: var(--muted); }
.sheet ul { padding-left: 20px; margin: 6px 0 12px; } .sheet .field { margin: 8px 0; } .sheet .field label { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 3px; }
.sheet .field input, .sheet .field select, .sheet .field textarea { width: 100%; border: 1.5px solid var(--line); background: var(--bg); border-radius: 12px; padding: 10px 12px; outline: none; }
.toast { position: fixed; left: 50%; transform: translateX(-50%); bottom: calc(var(--tabh) + 24px + env(safe-area-inset-bottom)); z-index: 60; background: #1f2a37; color: #fff; padding: 10px 16px; border-radius: 12px; font-weight: 600; font-size: 14.5px; max-width: 90vw; text-align: center; box-shadow: 0 6px 20px rgba(0,0,0,.25); }
.wordpill { position: fixed; left: 50%; transform: translateX(-50%); bottom: calc(var(--tabh) + 16px + env(safe-area-inset-bottom)); z-index: 30; border: 0; border-radius: 99px; background: var(--btn); color: var(--btn-ink); font-weight: 700; padding: 10px 18px; box-shadow: 0 6px 20px rgba(0,0,0,.3); max-width: 90vw; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
body.hide-tabs .wordpill { bottom: calc(80px + env(safe-area-inset-bottom)); }

/* ───── teacher ───── */
.codeitem { display: flex; align-items: center; gap: 8px; padding: 8px 0; border-top: 1px solid var(--line); font-size: 14px; }
.codeitem:first-child { border-top: 0; } .codeitem code { font-weight: 800; letter-spacing: .03em; }
.codeitem .grow { flex: 1; min-width: 0; } .codeitem small { display: block; color: var(--muted); }
.stud { padding: 9px 0; border-top: 1px solid var(--line); cursor: pointer; } .stud:first-child { border-top: 0; }
.stud b { font-size: 15px; } .stud small { display: block; color: var(--muted); }
.row2 { display: flex; gap: 8px; align-items: center; } .row2 > * { flex: 1; }

/* ---------- Vocab: tier star, sense, trap, nuance card, story ---------- */
.ge .gc { color: #e0a100; font-size: 15px; }
.ge .gs { font-size: 12px; color: var(--muted); border-bottom: 1px dotted var(--muted); }
.ge .gt { font-size: 10px; font-weight: 800; color: #fff; background: #e08a00; border-radius: 99px; padding: 1px 7px; letter-spacing: .03em; }
.nuance { border: 1.5px dashed var(--accent); border-radius: 14px; background: var(--accent-soft); padding: 10px 14px; margin: 12px 0; }
.nuance .nt { font-weight: 800; color: var(--accent); }
.nuance .nk { font-size: 10px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; background: var(--accent); color: #fff; border-radius: 99px; padding: 2px 8px; margin-right: 8px; }
.nuance ul { margin: 6px 0 0 18px; padding: 0; }
.nuance li { margin: 3px 0; }
.nuance li .tr { display: block; color: var(--muted); font-size: 13px; }
.story { border-radius: 16px; background: #fff8e8; border: 1px solid #f0d58a; padding: 12px 14px; margin: 12px 0; color: #3a2e10; }
.story .sk { font-size: 10px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: #a06a00; }
.story .sh { font-weight: 800; font-size: 17px; margin: 2px 0 6px; }
.story p { margin: 4px 0; }
.story .sr { color: #7a6a45; font-size: 13.5px; }
@media (prefers-color-scheme: dark) { .story { background: #3a3014; border-color: #6b5a22; color: #f3e6bf; } .story .sr { color: #cdbd8e; } }

/* ---------- gamification: quest, word states, XP, word counter, speed clock ---------- */
.quest { border: 1.5px solid var(--accent); background: var(--accent-soft); border-radius: 16px; padding: 12px 14px; margin: 0 0 12px; cursor: pointer; }
.quest.done { cursor: default; border-color: var(--good); background: var(--good-soft); }
.quest .qh { display: flex; justify-content: space-between; align-items: baseline; }
.wstates { display: flex; gap: 8px; flex-wrap: wrap; margin: 0 0 12px; font-size: 13.5px; font-weight: 600; }
.wstates span { background: var(--chip); border-radius: 99px; padding: 4px 10px; }
.card.xp .xh { display: flex; align-items: center; gap: 14px; }
.card.xp .lvl { width: 46px; height: 46px; border-radius: 50%; background: var(--accent); color: #fff; font-weight: 800; font-size: 22px; display: grid; place-items: center; }
.card.wcount .wh { display: flex; align-items: baseline; gap: 6px; }
.gtimer { position: relative; height: 30px; border-radius: 99px; background: var(--chip); overflow: hidden; margin: 8px 0 12px; }
.gtimer i { position: absolute; inset: 0 auto 0 0; width: 100%; background: var(--accent-soft); transition: width .3s linear; }
.gtimer b { position: absolute; inset: 0; display: grid; place-items: center; font-variant-numeric: tabular-nums; color: var(--accent); }
.gtimer.late i { background: rgba(224, 100, 92, .25); } .gtimer.late b { color: var(--bad); }

:root.dark .story { background: #3a3014; border-color: #6b5a22; color: #f3e6bf; }
:root.dark .story .sr { color: #cdbd8e; }