:root {
  --bg: #FAF5E9; --bg-2: #F1E8D6; --card: #F6EEDF; --text: #2A1A10; --muted: #7D6A55; --line: #D9CBB3;
  --brown: #7B4F2E; --brown-2: #5E3A1F; --gold: #D4A853; --teal: #3A9E8F; --green: #3F9B4A;
  --app-bar: #7B4F2E; --app-bar-text: #FFFFFF; --app-bg: #FAF5E9; --app-panel: #E6DBC4; --app-card: #F4EBDD;
  --app-text: #2A1A10; --app-muted: #9A8468; --app-accent: #7B4F2E; --app-accent-text: #FFFFFF; --app-chip: #7B4F2E;
  --app-selected: #FFDCC8; --app-fab: #D8B8A0; --app-fab-text: #3A2818; --app-tr-bar: #7B4F2E; --app-tr-bar-text: #FFFFFF;
  --app-progress: #7B4F2E; --app-track: #EADFC8; --orange: #FF9800; --cloud: #3F9B4A;
  --rd-bg: #FAF5E9; --rd-text: #111111; --rd-icon: #3A2818; --rd-hl: #FFF0C2; --rd-line: #C9C2B5;
  --font: "Onest", "Segoe UI", system-ui, sans-serif; --app-font: "Roboto", "Segoe UI", system-ui, sans-serif;
}
:root[data-theme="dark"] {
  --bg: #1C130B; --bg-2: #231910; --card: #2A1D12; --text: #F0E2C4; --muted: #A99478; --line: #3C2B1C;
  --brown: #D4A853; --brown-2: #E5BD6A;
  --app-bar: #2B1D12; --app-bar-text: #F0E2C4; --app-bg: #1C130B; --app-panel: #2A1D12; --app-card: #2A1D12;
  --app-text: #F0E2C4; --app-muted: #A08C70; --app-accent: #D4A853; --app-accent-text: #1C130B; --app-chip: #D4A853;
  --app-selected: #5E4332; --app-fab: #5E4332; --app-fab-text: #F0E2C4; --app-tr-bar: #D4A853; --app-tr-bar-text: #1C130B;
  --app-progress: #D4A853; --app-track: #3C2B1C; --cloud: #6FCF7A;
}
.phone[data-rd="dark"] { --rd-bg: #000; --rd-text: #FFF; --rd-icon: #D4A853; --rd-hl: #4A3A10; --rd-line: #444; }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 400 1.05rem/1.6 var(--font); }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
button { font: inherit; cursor: pointer; }
h1, h2, h3 { margin: 0; line-height: 1.15; letter-spacing: -.015em; }
h1 { font-size: clamp(2rem, 4.6vw, 3.3rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 700; margin-bottom: .6rem; }
h3 { font-size: 1.15rem; font-weight: 600; }
p { margin: 0 0 1rem; }
.wrap { max-width: 72rem; margin: 0 auto; padding: 0 1.1rem; }
@media (min-width: 48rem) { .wrap { padding: 0 2.5rem; } }
.muted { color: var(--muted); }
.lede { max-width: 36rem; font-size: 1.15rem; color: var(--muted); }
svg.i { width: 22px; height: 22px; fill: currentColor; vertical-align: middle; flex: none; }

/* ---------- header ---------- */
.top { display: flex; align-items: center; gap: 1.2rem; padding-top: 1rem; padding-bottom: 1rem; }
.logo { display: flex; align-items: center; gap: .6rem; text-decoration: none; font-weight: 700; font-size: 1.45rem; letter-spacing: -.01em; }
.logo img { width: 38px; height: 38px; border-radius: 10px; }
.top nav { margin-left: auto; display: flex; align-items: center; gap: 1.2rem; font-size: .97rem; }
.top nav a { display: block; line-height: 1.4; text-decoration: none; color: var(--muted); }
.langsw { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; font-size: .85rem; font-weight: 600; }
.langsw a, .langsw span { padding: .45rem .7rem; text-decoration: none; color: var(--muted); }
.langsw span { background: var(--brown); color: var(--bg); }
:root[data-theme="dark"] .langsw span { color: #1C130B; }
.top nav a:hover { color: var(--text); }
.burger { display: none; border: 1px solid var(--line); background: var(--card); color: var(--text); border-radius: 999px; width: 2.4rem; height: 2.4rem; place-items: center; }
@media (max-width: 44rem) {
  .top { gap: .7rem; flex-wrap: wrap; position: relative; }
  .top .logo { margin-right: auto; }
  .burger { display: grid; }
  .top nav { display: none; position: absolute; left: 0; right: 0; top: calc(100% - .3rem); z-index: 20; flex-direction: column; align-items: stretch; gap: 0; margin: 0; padding: .2rem 1.1rem; background: var(--card); border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 18px 40px -20px rgba(0,0,0,.5); }
  .top.open nav { display: flex; }
  .top nav a, .top nav a.opt { display: block; padding: .85rem 0; border-bottom: 1px solid var(--line); font-size: 1.05rem; color: var(--text); }
  .top nav a:last-child { border-bottom: 0; }
}
.theme { border: 1px solid var(--line); background: var(--card); color: var(--text); border-radius: 999px; width: 2.4rem; height: 2.4rem; display: grid; place-items: center; }
.btn { display: inline-flex; align-items: center; gap: .5rem; text-decoration: none; font-weight: 600; border-radius: 12px; padding: .85rem 1.3rem; border: 0; }
.btn.primary { background: var(--brown); color: var(--bg); }
.btn .play { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linejoin: round; stroke-linecap: round; }
.btn.primary:hover { background: var(--brown-2); }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
:root[data-theme="dark"] .btn.primary { color: #1C130B; }

/* ---------- hero + demo ---------- */
.hero { display: grid; gap: 2rem; padding-top: 2rem; padding-bottom: 3rem; align-items: start; }
@media (min-width: 64rem) { .hero { grid-template-columns: 1.05fr 1fr; gap: 3rem; } .hero.tab { grid-template-columns: 1fr; } .hero.tab .copy { max-width: 48rem; } }
.hero .copy { max-width: 34rem; }
.hero .actions { display: flex; gap: .8rem; flex-wrap: wrap; margin: 1.4rem 0 1rem; }
.badges { display: flex; flex-wrap: wrap; gap: .5rem .9rem; font-size: .92rem; color: var(--muted); }
.tour { scroll-margin-top: 1rem; margin-top: 1.6rem; border: 1px solid var(--line); border-radius: 16px; padding: 1rem 1.1rem; background: var(--card); }
.tour h3 { margin-bottom: .5rem; }
.tour ol { margin: 0; padding: 0 0 0 1.3rem; display: grid; gap: .35rem; font-size: .98rem; }
.tour li.done { color: var(--muted); text-decoration: line-through; }
.tour li.now { font-weight: 600; }
.tour .row { display: flex; gap: .6rem; flex-wrap: wrap; margin-top: .8rem; }
.tour .row button { border: 1px solid var(--line); background: transparent; color: var(--text); border-radius: 999px; padding: .4rem .9rem; font-size: .92rem; }
.tour .row button[aria-pressed="true"] { background: var(--brown); color: var(--bg); border-color: var(--brown); }
:root[data-theme="dark"] .tour .row button[aria-pressed="true"] { color: #1C130B; }
.hintd { font-size: .95rem; color: var(--muted); margin-top: .8rem; min-height: 2.6em; }

.demo { position: relative; display: flex; flex-direction: column; align-items: center; gap: .8rem; }
.phone {
  position: relative; width: 372px; height: 790px; max-width: 100%; border-radius: 34px; overflow: hidden;
  background: var(--app-bg); color: var(--app-text); font: 400 15px/1.35 var(--app-font);
  box-shadow: 0 0 0 10px #1a1410, 0 0 0 12px #3a3029, 0 40px 80px -30px rgba(0,0,0,.6);
  transition: width .35s ease, height .35s ease; user-select: none; -webkit-user-select: none;
}
/* landscape tablet (16:10) spanning the content width */
.phone.tablet { width: 100%; height: auto; aspect-ratio: 16 / 10; }
@media (max-width: 64rem) { .phone.tablet { width: 372px; height: 790px; } }
.phone .status { height: 28px; display: flex; justify-content: space-between; align-items: center; padding: 0 20px; font-size: 12px; color: var(--app-bar-text); background: var(--app-bar); }
.phone[data-screen="reader"] .status, .phone[data-screen="search"] .status { background: var(--rd-bg); color: var(--rd-text); opacity: .6; }
.scr { position: absolute; inset: 28px 0 0 0; overflow: hidden; display: flex; flex-direction: column; }
.demo .exit, .hintbar { display: none; }
#tryBtn, #runBtn { display: none; }
@media (max-width: 44rem) {
  #tryBtn { display: inline-flex; }
  #tabletBtn { display: none; }
  #runBtn { display: inline-flex; background: var(--brown); color: var(--bg); border-color: var(--brown); font-weight: 600; }
  :root[data-theme="dark"] #runBtn { color: #1C130B; }
  .demo:not(.full) .phone { display: none; }
  .demo.full .phone { position: fixed; left: 0; right: 0; top: 0; bottom: 62px; width: auto; height: auto; max-width: none; border-radius: 0; box-shadow: none; z-index: 50; }
  .demo.full .phone .status { padding-top: env(safe-area-inset-top); height: calc(28px + env(safe-area-inset-top)); }
  .demo.full .scr { top: calc(28px + env(safe-area-inset-top)); }
  .demo.full .hintbar { display: flex; align-items: center; gap: 10px; position: fixed; z-index: 60; left: 0; right: 0; bottom: 0; height: 62px; padding: 0 12px env(safe-area-inset-bottom); background: #1C130B; color: #F0E2C4; font: 500 .86rem/1.3 var(--font); }
  .demo.full .hintbar span { flex: 1; }
  .demo.full .exit { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; border: 1px solid #5E4332; background: #2A1D12; color: #F0E2C4; flex: none; }
  body.lock { overflow: hidden; }
}

/* ---- app chrome ---- */
.bar { background: var(--app-bar); color: var(--app-bar-text); display: flex; align-items: center; gap: 12px; padding: 10px 12px; min-height: 56px; font-size: 20px; }
.bar .sp { flex: 1; }
.ic { background: none; border: 0; color: inherit; padding: 6px; display: inline-grid; place-items: center; line-height: 1; }
.coin { display: inline-flex; align-items: center; gap: 5px; font-weight: 500; font-size: 17px; }
.coin i { width: 16px; height: 16px; border-radius: 50%; background: var(--gold); color: #3a2818; font: 700 11px/16px var(--app-font); text-align: center; font-style: normal; }
.avatar { width: 30px; height: 30px; border-radius: 50%; background: #F4EBDD; color: #7B4F2E; display: grid; place-items: center; }
.chips { position: relative; display: flex; gap: 8px; padding: 10px 12px; align-items: center; background: var(--app-panel); }
.chip { display: inline-flex; align-items: center; gap: 4px; border: 1px solid var(--app-chip); border-radius: 999px; padding: 6px 10px; font-size: 14px; background: transparent; color: var(--app-text); white-space: nowrap; }
.chip.on { background: var(--app-chip); color: var(--app-accent-text); }
.chip svg.i { width: 18px; height: 18px; }
.menu { position: absolute; top: 46px; left: 12px; z-index: 7; background: var(--app-card); border-radius: 6px; box-shadow: 0 8px 24px rgba(0,0,0,.35); min-width: 180px; padding: 6px 0; }
.menu button { display: block; width: 100%; text-align: left; background: none; border: 0; color: inherit; padding: 12px 18px; font-size: 16px; }
.menu button.on { color: var(--app-accent); font-weight: 600; }
.libsearch { display: flex; align-items: center; gap: 8px; padding: 8px 12px; background: var(--app-panel); }
.libsearch input { flex: 1; font: inherit; font-size: 17px; background: transparent; border: 0; border-bottom: 1px solid var(--app-accent); color: inherit; outline: 0; padding: 4px 0; }
.grid { flex: 1; min-height: 0; overflow: auto; padding: 12px; display: grid; grid-template-columns: repeat(3, 1fr); grid-auto-rows: max-content; gap: 10px; align-content: start; }
/* the app uses floor(width_dp / 120) columns, capped at 8: a landscape tablet gets 8 */
.phone.tablet .grid { grid-template-columns: repeat(8, 1fr); }
.grid.rows { display: flex; flex-direction: column; gap: 0; padding: 0 12px; }
.book { flex: none; min-height: max-content; background: var(--app-card); border-radius: 12px; padding: 0 0 8px; cursor: pointer; position: relative; text-align: left; border: 0; color: inherit; font: inherit; min-width: 0; overflow: hidden; }
.cover { aspect-ratio: 8 / 11; border-radius: 10px 10px 0 0; display: flex; align-items: flex-end; padding: 10px; color: #fff; font: 700 13px/1.15 var(--app-font); position: relative; overflow: hidden; overflow-wrap: anywhere; }
.cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.cover b { display: block; font-size: 14px; } .cover small { font-weight: 400; opacity: .85; }
.cover > div { position: relative; text-shadow: 0 1px 3px rgba(0,0,0,.6); }
.book .cloud { position: absolute; top: 6px; right: 6px; width: 22px; height: 22px; border-radius: 50%; background: rgba(255,255,255,.9); color: var(--cloud); display: grid; place-items: center; }
.book .cloud svg.i { width: 15px; height: 15px; }
.book .edit { position: absolute; top: 122px; right: 6px; width: 24px; height: 24px; border-radius: 6px; background: rgba(0,0,0,.5); color: #fff; display: grid; place-items: center; border: 0; }
.book .edit svg.i { width: 15px; height: 15px; }
.book .t { font-weight: 500; font-size: 13px; padding: 6px 8px 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.book .a { font-size: 12px; color: var(--app-muted); padding: 0 8px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pb { display: flex; align-items: center; gap: 5px; padding: 4px 8px 0; font-size: 10px; color: var(--app-muted); }
.pb svg.i { width: 12px; height: 12px; }
.pb i { flex: 1; height: 4px; border-radius: 2px; background: var(--app-track); overflow: hidden; font-style: normal; }
.pb i b { display: block; height: 100%; background: var(--app-progress); }
.pb.r i b { background: var(--teal); }
.pb .pc { width: 34px; text-align: right; font-size: 12px; color: var(--app-progress); } .pb.r .pc { color: var(--teal); }
.row-b { display: flex; align-items: center; gap: 12px; padding: 12px 4px; border-bottom: 1px solid var(--line); background: none; border-left: 0; border-right: 0; border-top: 0; width: 100%; color: inherit; font: inherit; text-align: left; cursor: pointer; }
.row-b .cl { color: var(--cloud); } .row-b .mid { flex: 1; min-width: 0; }
.row-b .t { font-size: 18px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; } .row-b .a { color: var(--app-muted); font-size: 14px; }
.row-b .pb { padding: 4px 0 0; }
.fab { position: absolute; right: 16px; bottom: 16px; width: 60px; height: 60px; border-radius: 18px; background: var(--app-fab); color: var(--app-fab-text); border: 0; display: grid; place-items: center; }
.fab svg.i { width: 28px; height: 28px; }

/* translate screen */
.panel { background: var(--app-panel); padding: 10px 14px 12px; }
.prog { display: flex; justify-content: space-between; font-weight: 500; font-size: 16px; }
.track { height: 10px; border-radius: 5px; background: var(--app-track); margin: 8px 0 12px; overflow: hidden; }
.track b { display: block; height: 100%; background: var(--app-progress); transition: width .5s; }
.sub { display: flex; align-items: center; gap: 6px; margin: 0 auto 10px; background: var(--app-accent); color: var(--app-accent-text); border: 0; border-radius: 8px; padding: 7px 16px; font-weight: 500; }
.tier, .langrow { display: flex; align-items: center; gap: 8px; padding: 6px 0; font-size: 15px; }
.tier .sp, .langrow .sp { flex: 1; }
.go { width: 100%; margin-top: 6px; background: var(--app-accent); color: var(--app-accent-text); border: 0; border-radius: 10px; padding: 13px; font-size: 16px; font-weight: 500; display: flex; justify-content: center; align-items: center; gap: 8px; }
.go.pause { background: var(--orange); color: #fff; }
.chl { flex: 1; overflow: auto; padding: 10px 12px; display: grid; gap: 8px; align-content: start; }
.ch { display: flex; align-items: center; gap: 12px; background: var(--app-card); border-radius: 12px; padding: 12px 14px; cursor: pointer; border: 0; color: inherit; font: inherit; text-align: left; }
.ch.sel { background: var(--app-selected); }
.ch .cb { width: 20px; height: 20px; border: 2px solid var(--app-accent); border-radius: 3px; display: grid; place-items: center; color: var(--app-accent-text); flex: none; }
.ch .cb svg.i { width: 14px; height: 14px; }
.ch.sel .cb { background: var(--app-accent); }
.ch .n { font-size: 16px; } .ch .s { font-size: 13px; color: var(--app-muted); } .ch .s.ok { color: var(--green); }
.ch .st { margin-left: auto; color: var(--app-muted); } .ch .st.ok { color: var(--green); }
.ch .spin { width: 18px; height: 18px; border: 2px solid var(--app-muted); border-top-color: transparent; border-radius: 50%; animation: spin .8s linear infinite; flex: none; }
@keyframes spin { to { transform: rotate(360deg); } }
.flag { display: inline-block; width: 22px; height: 15px; border-radius: 2px; vertical-align: middle; overflow: hidden; }
.tabs { display: flex; background: var(--app-bar); color: var(--app-bar-text); }
.tabs button { flex: 1; background: none; border: 0; color: inherit; opacity: .6; padding: 10px 0 12px; font-size: 16px; font-weight: 500; border-bottom: 3px solid transparent; }
.tabs button.on { opacity: 1; border-bottom-color: var(--app-bar-text); }
.prev { flex: 1; overflow: auto; padding: 12px 16px; font-size: 18px; line-height: 1.5; }
.prev p { margin: 0 0 .8em; }

/* reader */
.rd { flex: 1; position: relative; background: var(--rd-bg); color: var(--rd-text); overflow: hidden; display: flex; flex-direction: column; touch-action: pan-y; }
.rbar { position: absolute; left: 0; right: 0; top: 0; display: flex; align-items: center; gap: 6px; padding: 8px 10px; background: var(--rd-bg); font-size: 17px; z-index: 3; }
.rbar .ic, .rbot .ic { color: var(--rd-icon); }
.rbar .ttl { flex: 1; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; padding-left: 4px; }
.rbot { position: absolute; left: 0; right: 0; bottom: 0; background: var(--rd-bg); padding: 8px 14px 12px; z-index: 3; font-size: 13px; }
.rbot .nav { display: flex; align-items: center; justify-content: space-between; }
.rbot .nav .c { text-align: center; } .rbot .nav .c b { font-size: 16px; font-weight: 500; } .rbot .nav .c small { display: block; color: var(--app-muted); }
.rbot .sl { height: 3px; background: var(--app-track); border-radius: 2px; margin: 10px 0 12px; position: relative; }
.rbot .sl b { position: absolute; top: -6px; width: 15px; height: 15px; border-radius: 50%; background: var(--rd-icon); margin-left: -7px; }
.rbot .tools { display: flex; align-items: center; justify-content: space-around; }
.rbot .tools .fs { display: flex; align-items: center; gap: 8px; font-size: 15px; }
.rbot .tools .fs .ic { font-size: 17px; font-weight: 500; }
.rbot .flags { display: inline-flex; gap: 8px; border: 1px solid var(--rd-line); border-radius: 10px; padding: 6px 10px; background: transparent; }
.rbot .flags .flag { opacity: 1; } .rbot .flags span.flag { opacity: .3; } .rbot .flags span.flag.on { opacity: 1; } .rbot .flags span.flag .flag { opacity: 1; }
.hidden { display: none !important; }
.page { position: absolute; inset: 0; overflow: hidden; padding: 30px 18px 30px; font-size: var(--fs, 21px); line-height: 1.5; text-align: justify; hyphens: auto; -webkit-hyphens: auto; cursor: pointer; }
.page.cols { column-width: calc(100% - 36px); column-gap: 30px; column-fill: auto; }
.page.cols > * { break-inside: auto; }
.phone.tablet .page.cols { column-width: calc((100% - 66px) / 2); }
.rbar, .rbot { box-shadow: 0 0 12px 6px var(--rd-bg); }
.page.v { overflow: auto; scrollbar-width: none; }
.page.v::-webkit-scrollbar, .grid::-webkit-scrollbar, .chl::-webkit-scrollbar, .drawer::-webkit-scrollbar, .bs::-webkit-scrollbar, .prev::-webkit-scrollbar, .sheet::-webkit-scrollbar, .list::-webkit-scrollbar, .srch .res::-webkit-scrollbar { display: none; }
.grid, .chl, .drawer, .bs, .prev, .sheet, .list, .srch .res { scrollbar-width: none; }
.phone.tablet .page.cols { column-rule: 1px solid var(--rd-line); }
.page p { margin: 0 0 .45em; } .page p.hl { background: var(--rd-hl); }
.page h4[data-i] { margin: .2em 0 .9em; }
.page h4 { text-align: center; font-weight: 500; margin: .4em 0 .8em; }
.page table { border-collapse: collapse; width: 100%; font-size: .86em; margin: .4em 0 .6em; text-align: left; }
.page td, .page th { border: 1px solid var(--rd-line); padding: 4px 8px; vertical-align: top; }
.page sup { font-size: .65em; } .page sub { font-size: .65em; } .page .fn, .page .lnk { color: #3a6ea5; cursor: pointer; }
.phone[data-rd="dark"] .page .fn, .phone[data-rd="dark"] .page .lnk { color: #8fb4e8; }
.page .lnk { text-decoration: underline; }
.page .frac { display: inline-flex; flex-direction: column; align-items: center; vertical-align: middle; font-size: .8em; line-height: 1.1; margin: 0 .2em; }
.page .frac span:first-child { border-bottom: 1px solid currentColor; padding: 0 .2em; }
.page .eq { text-align: center; margin: .3em 0 .6em; }
.page .cap { font-size: .8em; color: var(--app-muted); text-align: center; }
.page figure, .prev figure { break-inside: avoid; margin: .5em 0 .9em; text-align: center; }
.page figure img, .prev figure img { max-width: 78%; max-height: 46vh; height: auto; border-radius: 4px; }
.page figcaption, .prev figcaption { font-size: .78em; color: var(--app-muted); margin-top: .35em; line-height: 1.3; }
.phone[data-rd="dark"] .page figure img { filter: brightness(.9); }

/* drawer, sheets, dialogs */
.scrim { position: absolute; inset: 0; background: rgba(0,0,0,.45); z-index: 5; }
.drawer { position: absolute; left: 0; top: 0; bottom: 0; width: 84%; background: var(--app-bg); color: var(--app-text); z-index: 6; overflow: auto; box-shadow: 10px 0 30px rgba(0,0,0,.3); }
.phone[data-rd="dark"] .drawer { background: #000; color: #fff; }
.drawer .hd { background: var(--app-panel); padding: 20px 20px 14px; }
.phone[data-rd="dark"] .drawer .hd { background: #1f1a12; }
.drawer .hd b { display: block; font-size: 16px; } .drawer .hd span { font-size: 13px; color: var(--app-muted); }
.mi { display: flex; align-items: center; gap: 14px; padding: 15px 20px; border-bottom: 1px solid var(--line); font-size: 17px; background: none; border-left: 0; border-right: 0; border-top: 0; width: 100%; color: inherit; text-align: left; }
.mi .i { color: var(--app-accent); } .mi .car { margin-left: auto; color: var(--app-muted); }
.sub-list { border-bottom: 1px solid var(--line); }
.si { display: flex; align-items: center; gap: 12px; padding: 10px 20px 10px 56px; font-size: 15px; width: 100%; background: none; border: 0; color: inherit; text-align: left; }
.si.cur { color: var(--app-accent); font-weight: 600; }
.si small { display: block; color: var(--app-muted); font-size: 12px; font-weight: 400; }
.si .del { margin-left: auto; color: var(--app-muted); }
.sheet { position: absolute; left: 0; right: 0; bottom: 0; background: var(--app-bg); color: var(--app-text); border-radius: 22px 22px 0 0; padding: 14px 18px 18px; z-index: 6; max-height: 80%; overflow: auto; }
.sheet .hb { width: 36px; height: 4px; border-radius: 2px; background: var(--app-muted); margin: 0 auto 12px; }
.sheet h5 { margin: 0 0 6px; font-size: 16px; font-weight: 600; display: flex; align-items: center; gap: 6px; }
.sheet .mi { padding: 14px 6px; border: 0; font-size: 18px; }
.sheet .lnk-url { color: #3a6ea5; font-size: 14px; word-break: break-all; margin: 6px 0 12px; }
.sheet .open { display: inline-flex; align-items: center; gap: 8px; background: var(--gold); color: #2A1A10; border: 0; border-radius: 999px; padding: 10px 18px; font-weight: 500; }
.dlg { position: absolute; left: 24px; right: 24px; top: 36%; background: var(--app-card); color: var(--app-text); border-radius: 22px; padding: 20px; z-index: 6; }
.dlg h5 { margin: 0 0 10px; font-size: 19px; font-weight: 500; }
.dlg .acts { display: flex; justify-content: flex-end; gap: 18px; margin-top: 14px; }
.dlg .acts button { background: none; border: 0; color: var(--app-accent); font-weight: 600; font-size: 15px; }
.dlg input { width: 100%; font: inherit; font-size: 18px; padding: 8px 4px; border: 0; border-bottom: 2px solid var(--app-accent); background: transparent; color: inherit; }
.tieropt { display: flex; align-items: center; gap: 12px; padding: 10px 4px; font-size: 16px; }
.tieropt .sel { margin-left: auto; width: 18px; height: 18px; border: 2px solid var(--app-accent); border-radius: 50%; flex: none; }
.tieropt.on .sel { background: var(--app-accent); box-shadow: inset 0 0 0 3px var(--app-card); }
.toast { position: absolute; left: 16px; right: 16px; bottom: 90px; background: #2A1D12; color: #F0E2C4; padding: 12px 16px; border-radius: 8px; z-index: 8; font-size: 14px; }

/* search screen */
.srch { flex: 1; display: flex; flex-direction: column; background: var(--rd-bg); color: var(--rd-text); }
.srch .in { display: flex; align-items: center; gap: 10px; padding: 10px 12px; font-size: 20px; }
.srch input { flex: 1; font: inherit; font-size: 20px; background: transparent; border: 0; color: inherit; outline: 0; min-width: 0; }
.srch .res { flex: 1; overflow: auto; padding: 0 14px 14px; }
.srch .r { padding: 10px 0; cursor: pointer; } .srch .r b { display: block; font-weight: 400; font-size: 19px; } .srch .r span { font-size: 14px; } .srch mark { background: #FFEB3B; color: #111; }

/* glossary */
.gl { font-family: ui-monospace, "Roboto Mono", monospace; font-size: 13px; border: 1px solid var(--app-accent); border-radius: 12px; padding: 6px 10px; }
.gl .row { display: flex; align-items: center; gap: 8px; padding: 5px 0; }
.gl .row .sp { flex: 1; } .gl .row .ic { color: var(--app-text); padding: 2px; } .gl .row .ic svg.i { width: 17px; height: 17px; }
.gl .ed { display: grid; gap: 6px; padding: 6px 0 8px; font-family: var(--app-font); }
.gl .ed input { font: inherit; font-size: 14px; padding: 6px 8px; border: 1px solid var(--app-muted); border-radius: 8px; background: transparent; color: inherit; }
.gl .ed .g { display: flex; gap: 6px; }
.gl .ed .g button { border: 1px solid var(--app-accent); background: transparent; color: var(--app-text); border-radius: 999px; padding: 3px 10px; font-size: 13px; }
.gl .ed .g button.on { background: var(--app-accent); color: var(--app-accent-text); }
.gl .ed .ok { background: var(--app-accent); color: var(--app-accent-text); border: 0; border-radius: 8px; padding: 6px; font-size: 13px; }
.badge { display: inline-block; background: var(--app-panel); border-radius: 999px; padding: 2px 10px; font-size: 12px; margin-left: 6px; }

/* book settings */
.bs { flex: 1; overflow: auto; padding: 12px 14px 20px; }
.bs label { display: block; font-weight: 600; margin: 10px 0 8px; font-size: 15px; }
.dd { width: 100%; text-align: left; border: 1.5px solid var(--app-accent); border-radius: 8px; background: transparent; color: var(--app-text); padding: 12px; font-size: 17px; display: flex; gap: 8px; align-items: center; }
.dd .car { margin-left: auto; }
.chipset { display: flex; flex-wrap: wrap; gap: 8px; }
.chipset .chip.on { background: var(--app-accent); color: var(--app-accent-text); }
.list { position: absolute; left: 14px; right: 14px; top: 60px; bottom: 20px; background: var(--app-card); border-radius: 12px; overflow: auto; z-index: 6; padding: 6px 0; }
.list button { display: block; width: 100%; text-align: left; background: none; border: 0; color: inherit; padding: 11px 16px; font-size: 16px; }
.list button.on { color: var(--app-accent); font-weight: 600; }

/* ---------- site sections ---------- */
.top { flex-wrap: nowrap; }
.top nav { flex-wrap: nowrap; }
section { padding: 6rem 0 0; }
section > .wrap > h2, .sec-head h2 { margin-bottom: .8rem; }
.sec-head { margin-bottom: 2.6rem; }
.sec-head .lede { max-width: 46rem; }
.sec-head .lede { margin: 0; }
.kicker { display: inline-flex; align-items: center; gap: .5rem; color: var(--brown); font-weight: 600; font-size: .95rem; margin-bottom: .8rem; }
.kicker::before { content: ""; width: 1.6rem; height: 2px; background: var(--brown); }

/* axes: chip rows like the app */
.axes { display: grid; gap: 1.2rem; border-top: 1px solid var(--line); }
.axis { display: grid; gap: .5rem 2rem; padding: 1.4rem 0; border-bottom: 1px solid var(--line); align-items: start; }
@media (min-width: 56rem) { .axis { grid-template-columns: 15rem 1fr; } }
.axis h3 { font-size: 1.2rem; } .axis h3 small { display: block; font-weight: 400; color: var(--muted); font-size: .92rem; margin-top: .3rem; }
.chiprow { display: flex; flex-wrap: wrap; gap: .5rem; align-items: flex-start; align-content: flex-start; }
.chiprow span { border: 1px solid var(--brown); color: var(--text); border-radius: 999px; padding: .32rem .8rem; font-size: .9rem; white-space: nowrap; }
.chiprow span.on { background: var(--brown); color: var(--bg); }
:root[data-theme="dark"] .chiprow span.on { color: #1C130B; }
.chiprow span.more { border-style: dashed; color: var(--muted); }
.chiprow span { cursor: pointer; } .chiprow span:hover { border-color: var(--brown-2); }
.axis .note { color: var(--muted); font-size: .95rem; align-self: center; }
.axis .cell { display: grid; gap: .5rem; }
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.2rem 2rem; margin: 0 0 2.4rem; max-width: 40rem; }
@media (min-width: 48rem) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stats .num { font-size: 2.4rem; font-weight: 700; color: var(--brown); line-height: 1; letter-spacing: -.02em; }
.stats span { display: block; color: var(--muted); font-size: .92rem; margin-top: .3rem; }

/* quality: two-column editorial list */
.qlist { display: grid; gap: 0 3rem; }
@media (min-width: 56rem) { .qlist { grid-template-columns: 1fr 1fr; } }
.q { display: grid; grid-template-columns: 2.6rem 1fr; gap: .4rem 1rem; padding: 1.3rem 0; border-top: 1px solid var(--line); align-content: start; }
.q .ico { color: var(--brown); grid-row: span 2; } .q .ico svg.i { width: 28px; height: 28px; }
.q h3 { font-size: 1.1rem; } .q p { margin: 0; color: var(--muted); font-size: .98rem; }

/* sync: split band */
.band { background: var(--card); border: 1px solid var(--line); border-radius: 24px; padding: 2rem 1.4rem; display: grid; gap: 2rem; }
@media (min-width: 56rem) { .band { grid-template-columns: 1fr 1fr; padding: 2.6rem; } }
.band h3 { font-size: 1.35rem; margin-bottom: .6rem; display: flex; align-items: center; gap: .6rem; }
.band h3 svg.i { color: var(--brown); width: 26px; height: 26px; }
.band p { color: var(--muted); margin: 0; }
.band ul { margin: .8rem 0 0; padding-left: 1.2rem; color: var(--muted); } .band li + li { margin-top: .25rem; }

/* server queue */
.queue { max-width: 30rem; margin-top: 1.6rem; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: var(--card); }
.queue div { display: flex; justify-content: space-between; gap: 1rem; padding: .85rem 1.1rem; border-top: 1px solid var(--line); font-size: .98rem; }
.queue div:first-child { border-top: 0; }
.queue .st { color: var(--muted); } .queue .st.on { color: var(--brown); } .queue .st.ok { color: var(--green); }
.queue .st.on::after { content: "…"; animation: dots 1.2s steps(4) infinite; }
@keyframes dots { 0% { content: ""; } 25% { content: "."; } 50% { content: ".."; } 75% { content: "..."; } }

/* privacy */
.priv { display: grid; gap: 1rem; }
@media (min-width: 48rem) { .priv { grid-template-columns: repeat(2, 1fr); } }
.priv div { padding: 1.1rem 0 0; border-top: 2px solid var(--brown); }
.priv h3 { font-size: 1.05rem; margin-bottom: .3rem; } .priv p { margin: 0; color: var(--muted); font-size: .97rem; }

/* pricing */
.plans { display: grid; gap: 1rem; margin-bottom: 2rem; }
@media (min-width: 40rem) { .plans { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 64rem) { .plans { grid-template-columns: repeat(4, 1fr); } }
.plan { position: relative; background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 1.4rem 1.3rem 1.3rem; display: flex; flex-direction: column; }
.plan.best { border-color: var(--brown); box-shadow: 0 0 0 1px var(--brown); }
.plan .tag { position: absolute; top: -.8rem; left: 1.2rem; background: var(--brown); color: var(--bg); font-size: .8rem; font-weight: 600; padding: .25rem .7rem; border-radius: 999px; }
:root[data-theme="dark"] .plan .tag { color: #1C130B; }
.plan h3 { font-size: 1.15rem; }
.plan .price { font-size: 2.3rem; font-weight: 700; letter-spacing: -.02em; line-height: 1; margin: .8rem 0 .2rem; }
.plan .price small { font-size: .95rem; font-weight: 400; color: var(--muted); letter-spacing: 0; }
.plan .coins { color: var(--brown); font-weight: 600; margin-bottom: .9rem; }
.plan ul { margin: 0; padding: 0; list-style: none; color: var(--muted); font-size: .95rem; display: grid; gap: .4rem; }
.plan li { display: flex; gap: .5rem; align-items: flex-start; } .plan li svg.i { width: 18px; height: 18px; color: var(--green); margin-top: .15rem; }
.plan .note { margin-top: auto; padding-top: 1rem; font-size: .88rem; color: var(--muted); }
.packs { display: grid; gap: 1rem; margin-top: 1.4rem; }
@media (min-width: 48rem) { .packs { grid-template-columns: repeat(3, 1fr); } }
.pack { border: 1px dashed var(--brown); border-radius: 16px; padding: 1.1rem 1.2rem; display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
.pack b { font-size: 1.5rem; } .pack b small { font-size: .95rem; font-weight: 400; color: var(--muted); }
.pack span { font-weight: 600; }
.cost { display: grid; gap: 1rem; margin-top: 1.4rem; }
@media (min-width: 48rem) { .cost { grid-template-columns: repeat(3, 1fr); } }
.cost div { background: var(--bg-2); border-radius: 16px; padding: 1.1rem 1.2rem; }
.cost .n { font-size: 2.6rem; font-weight: 700; color: var(--brown); line-height: 1; letter-spacing: -.02em; }
.cost .n small { font-size: .9rem; font-weight: 400; color: var(--muted); margin-left: .3rem; }
.cost h3 { font-size: 1.05rem; margin: .5rem 0 .2rem; } .cost p { margin: 0; color: var(--muted); font-size: .92rem; }
.sub-h { font-size: 1.35rem; font-weight: 700; margin: 3rem 0 .4rem; }
.fine { max-width: 40rem; color: var(--muted); font-size: .95rem; margin-top: 1.2rem; }

/* faq */
.faq { max-width: 46rem; border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; padding: 1rem 0; font-weight: 600; list-style: none; display: flex; gap: .8rem; align-items: baseline; }
summary::-webkit-details-marker { display: none; }
summary::before { content: "+"; color: var(--brown); width: 1rem; flex: none; font-size: 1.2rem; line-height: 1; }
details[open] summary::before { content: "−"; }
details p { margin: 0 0 1.2rem 1.8rem; color: var(--muted); }

.finale { padding-top: 7rem; padding-bottom: 2rem; text-align: center; }
.finale h2 { max-width: 22em; margin: 0 auto 1.6rem; }
footer { margin-top: 5rem; border-top: 1px solid var(--line); padding: 1.8rem 0 2.6rem; }
footer .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 1.2rem; font-size: .93rem; color: var(--muted); }
footer .brand { display: inline-flex; align-items: center; gap: .5rem; margin-right: auto; color: var(--text); font-weight: 600; }
footer .brand img { width: 24px; height: 24px; border-radius: 6px; }
footer a { text-decoration: none; } footer a:hover { color: var(--text); text-decoration: underline; }
@media (max-width: 44rem) {
  footer { padding-top: 1.4rem; }
  footer .wrap { flex-direction: column; align-items: flex-start; gap: 0; }
  footer .brand { margin: 0 0 .6rem; }
  footer a { width: 100%; padding: .7rem 0; border-top: 1px solid var(--line); color: var(--text); }
}

/* ---------- cookie consent (consent.js) ---------- */
#cookie-banner { position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 9999; max-width: 720px; margin: 0 auto; display: flex; align-items: center; gap: 18px; flex-wrap: wrap; background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 14px 18px; box-shadow: 0 18px 50px -20px rgba(0,0,0,.5); }
#cookie-banner p { flex: 1 1 260px; margin: 0; font-size: .92rem; color: var(--text); }
#cookie-banner a { color: var(--brown); }
#cookie-banner .cookie-actions { display: flex; gap: 10px; flex-wrap: wrap; }
#cookie-banner .cookie-actions { align-items: center; flex-direction: row-reverse; }
#cookie-banner button { font: 600 .95rem var(--font); padding: 12px 26px; border-radius: 999px; cursor: pointer; border: 0; background: transparent; color: var(--text); }
#cookie-banner button.primary { background: var(--brown); color: var(--bg); font-size: 1rem; padding: 13px 30px; }
#cookie-banner #cookie-reject { font-weight: 500; font-size: .85rem; color: var(--muted); padding: 10px 12px; text-decoration: underline; text-underline-offset: .2em; }
#cookie-banner #cookie-reject:hover { color: var(--text); }
:root[data-theme="dark"] #cookie-banner button.primary { color: #1C130B; }
@media (max-width: 560px) { #cookie-banner { flex-direction: column; align-items: stretch; gap: 14px; } #cookie-banner p { flex: 0 0 auto; } #cookie-banner .cookie-actions button.primary { flex: 1; } }

/* mobile hero: centred call to action */
@media (max-width: 44rem) {
  .hero .copy > h1, .hero .copy > .lede { text-align: center; margin-left: auto; margin-right: auto; }
  .hero .actions { flex-direction: column; align-items: stretch; max-width: 24rem; margin-left: auto; margin-right: auto; }
  .hero .actions .btn { justify-content: center; }
  .badges { justify-content: center; }
  .finale .btn { width: min(100%, 24rem); justify-content: center; }
  .sec-head h2 { font-size: 1.7rem; }
  .stats { grid-template-columns: repeat(2, 1fr); text-align: center; }
  .plan { text-align: left; }
  .pack { flex-direction: row; }
}

/* Android tap highlight flashes the whole page blue on every tap; the demo gives its own feedback. */
.phone, .phone * { -webkit-tap-highlight-color: transparent; }
.page { -webkit-user-select: none; user-select: none; -webkit-touch-callout: none; }

/* language picker + raster flags */
img.flag { object-fit: cover; display: inline-block; vertical-align: middle; border-radius: 2px; }
.langrow { cursor: pointer; }
.list button { display: flex; align-items: center; gap: 12px; }

.page h4.cht { break-after: avoid; margin: .6em 0 .7em; }
/* a chapter starts a new page, as in a printed book (columns only; ignored in vertical mode) */
.page.cols h4.cht:not(:first-child) { break-before: column; }

/* languages list */
.langs { list-style: none; padding: 0; margin: 1.2rem 0 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(10.5rem, 1fr)); gap: .55rem 1rem; }
.langs li { display: flex; align-items: center; gap: .6rem; font-size: 1rem; }
.langs img { width: 24px; height: 18px; object-fit: cover; border-radius: 2px; box-shadow: 0 0 0 1px var(--line, rgba(0,0,0,.12)); flex: none; }
.badges a { color: inherit; text-decoration: underline; text-decoration-color: currentColor; text-underline-offset: 3px; text-decoration-thickness: 1px; }

.langs { margin-bottom: 2.5rem; }
/* tablet: side menu and pickers keep their phone width */
.phone.tablet .drawer { width: 320px; }
.phone.tablet .list { left: 50%; right: auto; width: 360px; transform: translateX(-50%); }
.phone.tablet .sheet { left: 50%; right: auto; width: 560px; transform: translateX(-50%); }
.phone.tablet .dlg { left: 50%; right: auto; width: 400px; transform: translateX(-50%); }
.phone.tablet .toast { left: 50%; right: auto; width: max-content; max-width: 480px; transform: translateX(-50%); }
/* the switcher must never be squeezed by the header on narrow phones */
.langsw { flex: none; white-space: nowrap; }
@media (max-width: 44rem) {
  .langsw a, .langsw span { padding: .4rem .55rem; }
  .langs { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .6rem .8rem; }
  .langs li { font-size: .95rem; min-width: 0; }
  .langs li span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
}