:root{
  --bg:#05070a; --bg2:#080b10;
  --ink:#d7f5e6; --mut:#6f8c82; --faint:#4e6a63;
  --line:rgba(38,255,156,.14); --line2:rgba(38,255,156,.28);
  --glass:rgba(10,16,15,.55); --glass2:rgba(14,22,20,.66);
  --acc:#26ff9c; --acc2:#35d6ff; --accdim:rgba(38,255,156,.16);
  --red:#ff3b5c; --amber:#ffcf4d; --violet:#9a7dff;
  --hl:rgba(38,255,156,.16); --hlbar:#26ff9c;
  --mono:"JetBrains Mono","SF Mono",ui-monospace,Menlo,Consolas,monospace;
  --fs:17px; --rad:16px;
  --shadow:0 18px 44px -14px rgba(0,0,0,.75);
}
:root[data-theme="sepia"]{ --bg:#12100a;--bg2:#17140d;--ink:#e9e0c8;--mut:#9c8e6c;--glass:rgba(32,28,18,.6);--glass2:rgba(40,35,22,.68);--line:rgba(255,207,77,.16);--acc:#ffcf4d;--acc2:#ffa94d;--hl:rgba(255,207,77,.2);--hlbar:#ffcf4d;--line2:rgba(255,207,77,.3); }
:root[data-theme="light"]{ --bg:#eef3f0;--bg2:#e6ece9;--ink:#0d1a15;--mut:#4a665c;--faint:#7a938a;--glass:rgba(255,255,255,.7);--glass2:rgba(255,255,255,.8);--line:rgba(6,120,78,.16);--line2:rgba(6,120,78,.28);--acc:#09b268;--acc2:#0aa0c8;--hl:rgba(9,178,104,.16);--hlbar:#09b268;--shadow:0 18px 40px -14px rgba(10,40,30,.22); }

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;min-width:0}
[hidden]{display:none!important}
html{width:100%;max-width:100%;overflow-x:clip;-webkit-text-size-adjust:100%;text-size-adjust:100%}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,"SF Pro Display","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;letter-spacing:.1px}
body{min-height:100vh;width:100%;max-width:100%;overflow-x:clip;position:relative;
  padding-top:calc(54px + env(safe-area-inset-top));padding-bottom:calc(22px + env(safe-area-inset-bottom))}
body.reading{padding-bottom:calc(132px + env(safe-area-inset-bottom))}
button{font-family:inherit;cursor:pointer;color:inherit}
a{color:var(--acc2)}
.mono{font-family:var(--mono)}

/* ---------- ambient: glows + matrix grid + scanlines ---------- */
.ambient{position:fixed;inset:0;z-index:-2;overflow:hidden;
  background:radial-gradient(130% 90% at 50% -10%, #0a1512 0%, var(--bg) 62%)}
.glow{position:absolute;border-radius:50%;filter:blur(64px);opacity:.55}
.glow.g1{width:80vw;height:80vw;top:-22vw;right:-28vw;background:radial-gradient(circle,#00ff95aa,transparent 66%)}
.glow.g2{width:72vw;height:72vw;bottom:-26vw;left:-24vw;background:radial-gradient(circle,#19d6ff88,transparent 64%)}
.glow.g3{width:56vw;height:56vw;top:36vh;left:28vw;background:radial-gradient(circle,#26ff9c44,transparent 64%)}
.ambient::before{content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(38,255,156,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(38,255,156,.05) 1px,transparent 1px);
  background-size:40px 40px;mask-image:radial-gradient(120% 100% at 50% 0,#000,transparent 80%)}
.ambient::after{content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background:repeating-linear-gradient(0deg,rgba(0,0,0,.14) 0 1px,transparent 1px 3px)}
.grain{display:none}

/* ---------- glass primitive ---------- */
.glass{background:var(--glass);backdrop-filter:blur(24px) saturate(140%);-webkit-backdrop-filter:blur(24px) saturate(140%);
  border:1px solid var(--line);box-shadow:var(--shadow),inset 0 1px 0 rgba(38,255,156,.06)}

/* ---------- app bar ---------- */
.appbar{position:fixed;top:0;left:0;right:0;height:calc(54px + env(safe-area-inset-top));
  padding-top:env(safe-area-inset-top);display:flex;align-items:center;gap:6px;z-index:40;border-left:0;border-right:0;border-top:0;border-radius:0}
.appbar-title{font-family:var(--mono);font-weight:700;font-size:15px;flex:1;letter-spacing:.5px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding:0 4px;
  display:flex;align-items:center;justify-content:center;gap:7px}
.logo-mark{width:20px;height:20px;flex:none;filter:drop-shadow(0 0 5px rgba(38,255,156,.5))}
.iconbtn{width:44px;height:44px;border:0;background:transparent;font-size:24px;font-weight:700;border-radius:12px;transition:.15s}
.iconbtn:active{background:var(--line2);transform:scale(.94)}
#fontBtn{font-size:17px;font-weight:800}

.view{padding:16px 16px 10px;max-width:860px;margin:0 auto;animation:fade .26s cubic-bezier(.2,.7,.2,1)}
@keyframes fade{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* ---------- hero (terminal) ---------- */
.hero{padding:10px 4px 6px}
.hero-kick{font-family:var(--mono);font-size:12px;letter-spacing:.5px;color:var(--acc);font-weight:600}
.hero-title{font-size:29px;font-weight:900;margin:9px 0 5px;line-height:1.06;letter-spacing:-.5px;
  background:linear-gradient(180deg,#eafff5,#8fd8c0);-webkit-background-clip:text;background-clip:text;color:transparent}
:root[data-theme="light"] .hero-title{background:none;color:#0d1a15}
.caret{display:inline-block;width:11px;height:1.05em;vertical-align:-2px;margin-left:4px;background:var(--acc);
  box-shadow:0 0 10px var(--acc);animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.hero-sub{font-family:var(--mono);color:var(--mut);font-size:13px;margin:0 0 16px;max-width:94%}
.search{width:100%;padding:14px 16px;border-radius:13px;border:1px solid var(--line);font-family:var(--mono);
  background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  color:var(--ink);font-size:14px;outline:none;caret-color:var(--acc)}
.search::placeholder{color:var(--faint)}
.search:focus{border-color:var(--line2);box-shadow:0 0 0 4px var(--accdim)}
.lib-stats{font-family:var(--mono);color:var(--mut);font-size:11.5px;margin-top:12px;display:flex;gap:14px;flex-wrap:wrap}
.lib-stats b{color:var(--acc);font-weight:700}

/* ---------- category + cards ---------- */
.cat{font-family:var(--mono);margin:24px 2px 10px;font-size:12px;font-weight:700;letter-spacing:1.5px;color:var(--mut);text-transform:uppercase}
.cat::before{content:"// ";color:var(--acc)}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:13px}
@media(min-width:640px){.grid{grid-template-columns:1fr 1fr 1fr}}
.card{position:relative;border-radius:var(--rad);padding:15px;display:flex;flex-direction:column;gap:9px;min-height:142px;
  background:var(--glass);backdrop-filter:blur(20px) saturate(140%);-webkit-backdrop-filter:blur(20px) saturate(140%);
  border:1px solid var(--line);box-shadow:var(--shadow),inset 0 1px 0 rgba(38,255,156,.06);overflow:hidden;
  transition:transform .16s cubic-bezier(.2,.7,.2,1),border-color .2s,box-shadow .2s}
.card::before{content:"";position:absolute;inset:0;background:radial-gradient(120% 80% at 100% 0,rgba(38,255,156,.1),transparent 55%);pointer-events:none}
.card:active{transform:scale(.965);border-color:var(--line2);box-shadow:0 0 0 1px var(--line2),0 0 24px -6px var(--acc)}
.card-emoji{font-size:22px;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(145deg,rgba(38,255,156,.12),rgba(38,255,156,.02));border:1px solid var(--line);box-shadow:inset 0 1px 0 rgba(38,255,156,.12)}
.card-title{font-weight:800;font-size:14.5px;line-height:1.25;letter-spacing:-.2px}
.card-meta{font-family:var(--mono);color:var(--mut);font-size:10.5px;margin-top:auto;font-weight:500}
.card-bar{height:4px;border-radius:3px;background:rgba(38,255,156,.1);overflow:hidden}
.card-bar>i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--acc),var(--acc2));box-shadow:0 0 10px var(--acc)}

/* ---------- book head ---------- */
.book-head{display:flex;gap:15px;align-items:flex-start;padding:14px;border-radius:var(--rad);margin:2px 0 14px;
  background:var(--glass);backdrop-filter:blur(20px) saturate(140%);-webkit-backdrop-filter:blur(20px) saturate(140%);border:1px solid var(--line);box-shadow:var(--shadow)}
.book-head .be{font-size:30px;width:60px;height:60px;border-radius:16px;display:grid;place-items:center;flex:none;
  background:linear-gradient(145deg,rgba(38,255,156,.12),rgba(38,255,156,.02));border:1px solid var(--line)}
.book-head h2{margin:0 0 5px;font-size:19px;font-weight:900;letter-spacing:-.3px}
.book-head .bm{font-family:var(--mono);color:var(--mut);font-size:11.5px;line-height:1.55}
.resume{margin-top:12px;background:linear-gradient(135deg,var(--acc),var(--acc2));color:#032018;border:0;font-family:var(--mono);font-weight:700;
  padding:12px 16px;border-radius:12px;font-size:13.5px;width:100%;box-shadow:0 10px 24px -8px rgba(38,255,156,.5);transition:.15s;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.resume:active{transform:scale(.97);filter:brightness(1.08)}

/* ---------- chapter list ---------- */
.chapter-list{display:flex;flex-direction:column;gap:7px;margin-top:4px}
.chrow{display:flex;align-items:center;gap:13px;padding:13px;border-radius:13px;background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);transition:.15s}
.chrow:active{transform:scale(.985);border-color:var(--line2);background:var(--glass2)}
.chrow .cn{font-family:var(--mono);width:32px;height:32px;border-radius:9px;background:rgba(38,255,156,.05);border:1px solid var(--line);display:grid;place-items:center;font-size:11px;font-weight:700;color:var(--mut);flex:none}
.chrow.done .cn{background:linear-gradient(135deg,var(--acc),#12b873);color:#032018;border-color:transparent;box-shadow:0 0 12px rgba(38,255,156,.4)}
.chrow .ct{font-size:14.5px;font-weight:600;line-height:1.3;flex:1;letter-spacing:-.1px}
.chrow .cg{font-size:16px;color:var(--acc);flex:none;font-family:var(--mono)}

/* ---------- reader ---------- */
.reader{padding-bottom:130px;max-width:720px}
.reader-meta{font-family:var(--mono);display:inline-block;color:var(--acc);font-size:11px;letter-spacing:.4px;text-transform:uppercase;margin:2px 0 14px;font-weight:600;padding:7px 12px;border-radius:999px;background:var(--glass);border:1px solid var(--line)}
.reader-meta::before{content:"$ "}
.reader-body{font-size:var(--fs);line-height:1.74}
.reader-end{margin-top:22px}
.tts-block{border-radius:8px;transition:background .18s,box-shadow .18s;scroll-margin-top:72px}
.tts-active{background:var(--hl)}
.tts-active.block-lead{border-left:3px solid var(--hlbar);padding-left:10px;margin-left:-13px;box-shadow:0 0 24px -6px var(--hl)}

/* rendered book html + house style */
.chapter h1{font-size:24px;font-weight:900;line-height:1.14;margin:4px 0 14px;letter-spacing:-.5px}
.chapter h2{font-size:19px;font-weight:800;margin:24px 0 8px;color:var(--acc);letter-spacing:-.2px}
.chapter h2::before{content:"# ";color:var(--acc2);opacity:.7;font-family:var(--mono)}
.chapter h3{font-size:16.5px;font-weight:800;margin:17px 0 6px;color:var(--acc2)}
.chapter h4{font-size:15px;font-weight:800;margin:13px 0 4px;color:var(--mut)}
.chapter p{margin:0 0 13px}
.chapter strong,.chapter b{color:var(--acc);font-weight:800}
.chapter em,.chapter i{color:var(--acc2);font-style:italic}
.chapter a{color:var(--acc2);text-decoration:underline;text-decoration-color:rgba(53,214,255,.4)}
.chapter strong em,.chapter em strong{color:#ffe08a}
.chapter ul,.chapter ol{padding-left:22px;margin:4px 0 14px}
.chapter li{margin:0 0 7px}
.chapter li::marker{color:var(--acc)}
.chapter blockquote{border-left:3px solid var(--amber);background:rgba(255,207,77,.09);margin:14px 0;padding:11px 15px;border-radius:0 12px 12px 0}
.chapter blockquote p:last-child{margin:0}
.chapter code{font-family:var(--mono);font-size:.84em;background:rgba(38,255,156,.1);padding:2px 6px;border-radius:5px;color:var(--acc);word-break:break-word}
.chapter pre{background:rgba(0,0,0,.5);border:1px solid var(--line);border-radius:12px;padding:13px;overflow-x:auto;font-size:12.5px;line-height:1.55;margin:13px 0}
.chapter pre code{background:none;padding:0;color:#aef5d4}
.chapter table{width:100%;border-collapse:collapse;margin:13px 0;font-size:13px;display:block;overflow-x:auto}
.chapter th{font-family:var(--mono);background:rgba(38,255,156,.08);text-align:left;padding:9px 11px;font-weight:700;border:1px solid var(--line);color:var(--acc)}
.chapter td{padding:8px 11px;border:1px solid var(--line);vertical-align:top}
.chapter hr{border:0;border-top:1px dashed var(--line2);margin:20px 0}
.chapter img,.chapter svg{max-width:100%;height:auto}
.chapter figure{margin:16px 0;text-align:center}
.chapter figcaption{font-family:var(--mono);font-size:11.5px;color:var(--mut);margin-top:7px}
.chapter .svgwrap{background:#f6fffb;border:1px solid var(--line);border-radius:12px;padding:11px;overflow-x:auto}
.chapter .scn{border:1px solid var(--line);border-left:3px solid var(--acc);background:var(--glass);border-radius:0 12px 12px 0;padding:11px 15px;margin:14px 0;backdrop-filter:blur(8px)}
.chapter .scn .lab{font-family:var(--mono);display:inline-block;font-size:10px;font-weight:700;letter-spacing:1.4px;color:#032018;background:linear-gradient(135deg,var(--acc),var(--acc2));padding:3px 10px;border-radius:5px;margin-bottom:7px}
.chapter .keytake{border-left:3px solid var(--acc2);background:rgba(53,214,255,.09);border-radius:0 12px 12px 0;padding:11px 15px;margin:14px 0}
.chapter .defend{border-left:3px solid var(--acc);background:rgba(38,255,156,.08);border-radius:0 12px 12px 0;padding:11px 15px;margin:14px 0}

/* ---------- bottom tab bar ---------- */
.tabbar{position:fixed;left:12px;right:12px;bottom:calc(10px + env(safe-area-inset-bottom));z-index:44;height:64px;border-radius:20px;display:flex;align-items:center;justify-content:space-around;padding:0 6px;max-width:520px;margin:0 auto}
.tab{border:0;background:transparent;display:flex;flex-direction:column;align-items:center;gap:3px;color:var(--faint);font-family:var(--mono);font-size:9.5px;font-weight:600;padding:8px 10px;border-radius:12px;transition:.15s;min-width:48px}
.tab .ti{font-size:19px;line-height:1}
.tab.active{color:var(--ink)}
.tab.active .ti{color:var(--acc);filter:drop-shadow(0 0 8px rgba(38,255,156,.7))}
.tab:active{transform:scale(.9)}
.tab.center{width:58px;height:58px;border-radius:50%;justify-content:center;margin-top:-20px;color:#032018;
  background:linear-gradient(135deg,var(--acc),var(--acc2));box-shadow:0 12px 26px -6px rgba(38,255,156,.6),inset 0 1px 0 rgba(255,255,255,.3)}
.tab.center .ti{font-size:22px}
.tab.center .tl{display:none}

/* ---------- audio bar ---------- */
.audiobar{position:fixed;left:10px;right:10px;bottom:calc(10px + env(safe-area-inset-bottom));z-index:45;display:flex;align-items:center;gap:7px;padding:9px 11px;border-radius:20px;max-width:620px;margin:0 auto;flex-wrap:nowrap}
.toast{position:fixed;left:50%;bottom:calc(96px + env(safe-area-inset-bottom));transform:translateX(-50%);z-index:70;max-width:88%;
  background:var(--glass2);border:1px solid var(--line2);color:var(--ink);padding:11px 16px;border-radius:12px;font-size:13px;
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:var(--shadow);opacity:0;transition:opacity .25s;text-align:center;line-height:1.4}
.toast.show{opacity:1}
.abtn{border:1px solid var(--line);background:rgba(38,255,156,.06);width:42px;height:42px;border-radius:50%;font-size:15px;flex:none;display:grid;place-items:center;transition:.14s}
.abtn:active{transform:scale(.9);background:rgba(38,255,156,.16)}
.abtn.play{background:linear-gradient(135deg,var(--acc),var(--acc2));color:#032018;width:52px;height:52px;font-size:19px;border:0;box-shadow:0 10px 22px -6px rgba(38,255,156,.6)}
.abtn.small{font-family:var(--mono);width:auto;min-width:42px;border-radius:12px;font-size:11.5px;font-weight:700;padding:0 9px;height:38px;flex:none}
.aprog{flex:1;min-width:16px;height:5px;background:rgba(38,255,156,.12);border-radius:4px;overflow:hidden}
.aprog-fill{height:100%;width:0;background:linear-gradient(90deg,var(--acc),var(--acc2));box-shadow:0 0 12px var(--acc)}

/* ---------- search results ---------- */
.search-results{display:flex;flex-direction:column;gap:7px}
.sr-count{font-family:var(--mono);font-size:11px;color:var(--acc);font-weight:700;letter-spacing:1px;text-transform:uppercase;padding:2px 4px 6px}
.sr-count::before{content:"› "}
.sr{padding:13px;border-radius:12px;background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(12px);transition:.14s}
.sr:active{transform:scale(.985);background:var(--glass2);border-color:var(--line2)}
.sr .srt{font-weight:700;font-size:14.5px}
.sr .srb{font-family:var(--mono);font-size:11px;color:var(--mut);margin-top:3px}
.sr .srx{font-family:var(--mono);font-size:12px;color:var(--mut);margin-top:6px;line-height:1.5}
.sr .srx mark,.chapter mark{background:rgba(38,255,156,.26);color:#eafff5;border-radius:3px;padding:0 2px}
.empty{font-family:var(--mono);color:var(--mut);text-align:center;padding:46px 10px;font-size:13.5px}

/* ---------- settings sheet ---------- */
.sheet{position:fixed;inset:0;z-index:60;background:rgba(0,0,0,.6);display:flex;align-items:flex-end;animation:fade .2s}
.sheet-card{width:100%;border-radius:22px 22px 0 0;padding:20px 20px calc(20px + env(safe-area-inset-bottom));max-width:620px;margin:0 auto;
  background:var(--glass2);backdrop-filter:blur(30px) saturate(140%);-webkit-backdrop-filter:blur(30px) saturate(140%);border:1px solid var(--line);border-bottom:0}
.sheet-card::before{content:"";display:block;width:40px;height:4px;border-radius:3px;background:var(--line2);margin:0 auto 14px}
.sheet-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 2px;border-bottom:1px solid var(--line)}
.sheet-row>span{font-family:var(--mono);font-size:13px;font-weight:600;color:var(--acc)}
.sheet-row select,.sheet-row input[type=range]{background:rgba(38,255,156,.06);color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:8px;font-size:13px;max-width:58%}
.seg{display:flex;gap:7px}
.seg button{font-family:var(--mono);background:rgba(38,255,156,.06);border:1px solid var(--line);border-radius:10px;padding:8px 14px;font-weight:700;font-size:13px;transition:.14s}
.seg button:active{background:linear-gradient(135deg,var(--acc),var(--acc2));color:#032018;border-color:transparent}
.sheet-close{margin-top:16px;width:100%;background:linear-gradient(135deg,var(--acc),var(--acc2));color:#032018;border:0;border-radius:13px;padding:14px;font-weight:800;font-size:15px;box-shadow:0 10px 24px -8px rgba(38,255,156,.5)}
.sheet-test{margin-top:14px;width:100%;background:rgba(38,255,156,.08);border:1px solid var(--line2);color:var(--acc);border-radius:12px;padding:12px;font-weight:700;font-family:var(--mono);font-size:13px}
.sheet-test:active{background:rgba(38,255,156,.16)}

/* ===== v2: stability + new components ===== */
.appbar,.reader-tools,.audiobar{transform:translateZ(0);will-change:transform}
.reader-body{overflow-wrap:anywhere;word-break:break-word}
.chapter img,.chapter svg,.chapter video,.chapter iframe{max-width:100%!important;height:auto}
.chapter table,.chapter pre,.chapter .svgwrap{max-width:100%}

/* reader tools (fixed under appbar) */
.reader-tools{position:fixed;left:0;right:0;top:calc(54px + env(safe-area-inset-top));z-index:35;padding:0;border-radius:0;border-left:0;border-right:0;border-top:0;overflow:hidden}
body.reading{padding-top:calc(54px + 48px + env(safe-area-inset-top));padding-bottom:calc(130px + env(safe-area-inset-bottom))}
.rt-prog{height:3px;background:rgba(38,255,156,.12)}
.rt-prog>i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--acc),var(--acc2));box-shadow:0 0 8px var(--acc)}
.rt-btns{display:flex;align-items:center;gap:8px;padding:7px 12px}
.rt-spacer{flex:1}
.rt-btn{font-family:var(--mono);background:rgba(38,255,156,.06);border:1px solid var(--line);color:var(--ink);border-radius:10px;padding:7px 11px;font-size:12.5px;font-weight:700;transition:.14s}
.rt-btn:active{background:rgba(38,255,156,.18);transform:scale(.94)}
.rt-btn.on{color:var(--acc);border-color:var(--line2)}

/* drawer */
.scrim{position:fixed;inset:0;z-index:55;background:rgba(0,0,0,.6);opacity:0;transition:opacity .25s}
.scrim.show{opacity:1}
.drawer{position:fixed;top:0;bottom:0;left:0;width:84%;max-width:324px;z-index:56;transform:translateX(-104%);transition:transform .26s cubic-bezier(.2,.7,.2,1);
  display:flex;flex-direction:column;padding:calc(16px + env(safe-area-inset-top)) 0 calc(14px + env(safe-area-inset-bottom));border-radius:0 20px 20px 0;border-left:0;border-top:0;border-bottom:0}
.drawer.open{transform:none}
.dr-head{display:flex;align-items:center;gap:12px;padding:6px 18px 16px;border-bottom:1px solid var(--line)}
.dr-logo{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;flex:none;
  background:radial-gradient(120% 120% at 30% 20%,rgba(38,255,156,.16),rgba(5,7,10,.9));
  border:1px solid rgba(38,255,156,.35);box-shadow:0 0 18px rgba(38,255,156,.25),inset 0 0 12px rgba(38,255,156,.08)}
.dr-logo svg{width:30px;height:30px;filter:drop-shadow(0 0 4px rgba(38,255,156,.5))}
.dr-link{color:var(--acc);text-decoration:none;font-weight:700}
.dr-link:hover{text-decoration:underline}
.dr-name{font-weight:800;font-size:15px}
.dr-sub{font-size:11px;color:var(--mut)}
.dr-nav{flex:1;overflow-y:auto;padding:10px 12px}
.dr-item{display:flex;align-items:center;gap:12px;width:100%;text-align:left;background:transparent;border:0;color:var(--ink);padding:12px;border-radius:12px;font-size:14.5px;font-weight:600;transition:.14s}
.dr-item:active{background:rgba(38,255,156,.12)}
.dr-item .di{width:22px;text-align:center;color:var(--acc);font-size:16px}
.dr-item.sub{font-size:13.5px;font-weight:500;color:var(--mut);padding:10px 12px}
.dr-item.sub .di{color:var(--acc2)}
.dr-label{font-family:var(--mono);font-size:10.5px;letter-spacing:1px;color:var(--faint);text-transform:uppercase;padding:14px 14px 4px}
.dr-foot{font-family:var(--mono);padding:12px 18px 0;border-top:1px solid var(--line);color:var(--faint);font-size:10.5px;line-height:1.7}

/* category chips */
.cat-chips{display:flex;gap:8px;overflow-x:auto;padding:4px 0 2px;margin:2px 0 4px;scrollbar-width:none}
.cat-chips::-webkit-scrollbar{display:none}
.chip{flex:none;font-family:var(--mono);background:var(--glass);border:1px solid var(--line);color:var(--mut);border-radius:999px;padding:7px 14px;font-size:12px;font-weight:600;transition:.14s;backdrop-filter:blur(10px)}
.chip.on{color:#032018;background:linear-gradient(135deg,var(--acc),var(--acc2));border-color:transparent}

/* continue card */
.cont{margin:6px 0 14px;padding:15px;border-radius:16px;background:var(--glass);border:1px solid var(--line2);position:relative;overflow:hidden;box-shadow:var(--shadow);backdrop-filter:blur(20px)}
.cont::before{content:"";position:absolute;inset:0;background:radial-gradient(120% 90% at 100% 0,rgba(38,255,156,.16),transparent 60%);pointer-events:none}
.cont:active{transform:scale(.99)}
.cont-top{display:flex;justify-content:space-between;align-items:center}
.cont-k{font-size:11px;letter-spacing:1px}.cont-k,.cont-pct{color:var(--acc);font-weight:700;font-size:12px}
.cont-title{font-weight:800;font-size:16px;margin:9px 0 3px;letter-spacing:-.2px}
.cont-ch{font-size:12px;color:var(--mut)}
.cont-bar{height:6px;border-radius:4px;background:rgba(38,255,156,.12);overflow:hidden;margin-top:11px}
.cont-bar>i{display:block;height:100%;background:linear-gradient(90deg,var(--acc),var(--acc2));box-shadow:0 0 10px var(--acc)}

/* book-head progress + chapter pct */
.hbar{height:6px;border-radius:4px;background:rgba(38,255,156,.12);overflow:hidden;margin:10px 0 0}
.hbar>i{display:block;height:100%;background:linear-gradient(90deg,var(--acc),var(--acc2));box-shadow:0 0 10px var(--acc)}
.cpct{color:var(--acc);font-size:11px;font-weight:600}

/* ===== app-icon book tiles ===== */
#library .grid{grid-template-columns:repeat(3,1fr);gap:16px 12px}
@media(min-width:620px){#library .grid{grid-template-columns:repeat(4,1fr)}}
.card.app{background:none;border:0;box-shadow:none;padding:0;min-height:0;gap:8px;backdrop-filter:none}
.card.app::before{display:none}
.card.app:active{transform:scale(.93)}
.bk-ic{position:relative;width:100%;aspect-ratio:1/1;border-radius:21px;display:grid;place-items:center;overflow:hidden;
  box-shadow:0 12px 24px -10px rgba(0,0,0,.7),inset 0 1px 0 rgba(255,255,255,.22);border:1px solid rgba(255,255,255,.1)}
.bk-emoji{font-size:30px;z-index:2;filter:drop-shadow(0 2px 6px rgba(0,0,0,.45))}
.bk-glyph{z-index:2;width:46%;height:46%;display:grid;place-items:center;color:#f3fff9;
  filter:drop-shadow(0 2px 7px rgba(0,0,0,.55)) drop-shadow(0 0 5px rgba(255,255,255,.22))}
.bk-glyph svg{width:100%;height:100%}
.be-tile .bk-glyph{width:52%;height:52%}
.bk-grid{position:absolute;inset:0;z-index:1;opacity:.22;
  background-image:linear-gradient(rgba(255,255,255,.25) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.25) 1px,transparent 1px);background-size:18px 18px}
.bk-ic::after{content:"";position:absolute;inset:0;z-index:1;background:radial-gradient(120% 90% at 20% 0,rgba(255,255,255,.3),transparent 55%);pointer-events:none}
.bk-badge{position:absolute;top:6px;right:6px;z-index:3;background:rgba(0,0,0,.42);color:#fff;font-size:9.5px;font-weight:700;padding:2px 6px;border-radius:999px}
.bk-open{position:absolute;bottom:4px;right:9px;z-index:3;color:rgba(255,255,255,.9);font-size:16px;font-weight:800;line-height:1}
.bk-pbar{position:absolute;left:8px;right:8px;bottom:8px;height:4px;border-radius:3px;background:rgba(0,0,0,.35);overflow:hidden;z-index:3}
.bk-pbar>i{display:block;height:100%;background:#fff;box-shadow:0 0 8px rgba(255,255,255,.7)}
.card.app .card-title{font-size:11.5px;line-height:1.25;text-align:center;font-weight:700;letter-spacing:-.1px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
/* category gradients */
.cat-foundations{background:linear-gradient(145deg,#0b7f73,#17d6a3)}
.cat-offensive{background:linear-gradient(145deg,#b3261e,#ff7a3d)}
.cat-aisecurity{background:linear-gradient(145deg,#6a3df0,#b06dff)}
.cat-defensive{background:linear-gradient(145deg,#1f54c7,#4f9dff)}
.cat-otics{background:linear-gradient(145deg,#b06a12,#ffcf4d)}
.cat-governance{background:linear-gradient(145deg,#2f6f5c,#59b58f)}
/* book-header tile */
.be-tile{width:66px!important;height:66px!important;flex:none;aspect-ratio:auto;border-radius:18px}
.be-tile .bk-emoji{font-size:30px}
.lib-stats:empty{display:none}

/* glass fallback when backdrop-filter unsupported */
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){
  :root{--glass:rgba(16,24,22,.92);--glass2:rgba(20,30,27,.95)}
}

/* ---- legal / terms page ---- */
.legal{max-width:760px;margin:0 auto}
.legal h1{font-size:22px;margin:4px 0 14px}
.legal h2{font-size:15px;color:var(--acc);margin:22px 0 6px;letter-spacing:.3px}
.legal .legal-lead{color:var(--mut)}
.legal ul{margin:6px 0 6px 2px;padding-left:18px}
.legal li{margin:4px 0}
.legal a{color:var(--acc);word-break:break-word}
.legal .legal-foot{margin-top:26px;padding-top:14px;border-top:1px solid var(--line);color:var(--faint);font-family:var(--mono);font-size:12px}
.dr-copy{display:block;margin-top:6px;color:var(--faint);font-size:10px;line-height:1.5}