.site{min-height:100vh;background:var(--bg)}.site h2{margin:12px 0 40px;font-size:clamp(30px,3.6vw,44px);letter-spacing:-.025em;font-weight:800;max-width:760px}.site-nav{position:sticky;top:0;z-index:40;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px var(--gutter);background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.site-links{display:flex;gap:28px;font-size:14px;font-weight:500}.site-links a{color:var(--ink)}.site-links a:hover{color:var(--acc2)}.site-actions{display:flex;gap:10px;align-items:center}.iconbtn{width:42px;height:42px;border-radius:12px;border:1px solid var(--line2);background:var(--card);color:var(--ink);cursor:pointer;display:flex;align-items:center;justify-content:center}.hero{position:relative;overflow:hidden;min-height:620px;display:flex;align-items:center}.hero-img{position:absolute;right:0;top:0;width:66%;height:100%;object-fit:cover;object-position:60% 40%}.hero-fade-x{position:absolute;inset:0;background:linear-gradient(90deg,var(--bg) 34%,transparent 78%)}.hero-fade-y{position:absolute;left:0;right:0;bottom:0;height:120px;background:linear-gradient(0deg,var(--bg),transparent)}.powered{position:absolute;top:28px;right:var(--gutter);display:flex;align-items:center;gap:16px;padding:10px 16px;border-radius:14px;background:var(--glass);backdrop-filter:blur(8px)}.powered-k{font-size:10px;letter-spacing:.16em;color:var(--mute);font-weight:600}.powered-v{font-size:20px;font-weight:800;color:var(--acc2)}.powered-v span{color:var(--ink)}.powered .vr{width:1px;height:34px;background:var(--line2)}.powered-c{font-size:11px;letter-spacing:.16em;font-weight:700;line-height:1.5}.scribble{position:absolute;right:clamp(16px,5vw,80px);bottom:70px;font-family:Caveat,cursive;font-size:38px;line-height:1.05;color:#fff;text-align:right;text-shadow:0 2px 12px rgba(0,0,0,.5)}.hero-copy{position:relative;max-width:660px;padding:60px var(--gutter)}.hero h1{margin:0;font-size:clamp(44px,6.4vw,84px);line-height:.98;letter-spacing:-.035em;font-weight:800}.hero h1 span{color:var(--acc2)}.hero p{margin:24px 0 0;font-size:18px;line-height:1.55;max-width:560px;text-wrap:pretty}.hero-ctas{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}.hero-proof{display:flex;gap:28px;margin-top:40px;flex-wrap:wrap;font-size:14px;color:var(--mute)}.hero-proof>div{display:flex;align-items:center;gap:8px}.features{padding:24px var(--gutter) 72px;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.feature{padding:24px;display:flex;flex-direction:column;gap:10px}.f-title{font-size:19px;font-weight:700}.f-desc{font-size:14.5px;line-height:1.55;color:var(--mute);text-wrap:pretty}.band-plain{padding:72px var(--gutter);border-top:1px solid var(--line)}.band{padding:72px var(--gutter);background:var(--band);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}.step{display:flex;flex-direction:column;gap:12px;padding-top:20px;position:relative}.step-bar{position:absolute;top:0;left:0;right:0;height:2px;background:var(--acc);transform-origin:left}.step-n{font-size:13px;font-weight:700;color:var(--acc2)}.step-t{font-size:21px;font-weight:700}.step-d{font-size:15px;line-height:1.6;color:var(--mute);text-wrap:pretty}.try{margin-top:40px;display:flex;flex-wrap:wrap;gap:10px;align-items:center}.try .chip{font-weight:500;white-space:normal;text-align:left}.lib-wrap{display:flex;flex-wrap:wrap;gap:40px;align-items:flex-start}.lib-intro{flex:1 1 300px;max-width:420px}.lib-intro h2{margin-bottom:14px}.lib-intro p{margin:0;font-size:16px;line-height:1.6}.lib-grid{flex:2 1 520px;display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px}.lib-card{text-align:left;padding:20px;display:flex;flex-direction:column;gap:8px;cursor:pointer;color:var(--ink)}.lc-name{font-size:16px;font-weight:700}.lc-desc{font-size:13.5px;line-height:1.5;color:var(--mute)}.sec-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}.sec{display:flex;gap:16px;padding:24px}.sec-t{font-size:17px;font-weight:700;margin-bottom:6px}.sec-d{font-size:14.5px;line-height:1.55;color:var(--mute)}.mobile-cta{display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between}.mobile-cta h2{margin-bottom:12px}.mobile-cta p{margin:0;max-width:560px;line-height:1.6}.site-foot{padding:32px var(--gutter) 48px;display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:center}.disclaimer{display:flex;align-items:center;gap:14px;max-width:640px;padding:16px 20px;border:1px solid var(--line2);border-radius:14px;font-size:13.5px;line-height:1.55;color:var(--mute)}.foot-links{display:flex;gap:18px;flex-wrap:wrap;font-size:13px;align-items:center}.site-actions .btn{white-space:nowrap}.show-sm{display:none}@media(max-width:900px){.site-links{display:none}.hero{min-height:0;align-items:flex-end}.hero-img{width:100%;height:62%;object-position:70% 40%;opacity:.6}.hero-fade-x{background:linear-gradient(0deg,var(--bg) 45%,transparent 100%)}.powered,.scribble{display:none}.hero-copy{padding-top:120px;padding-bottom:36px}}@media(max-width:560px){.hide-sm{display:none}.show-sm{display:inline}.site-nav{padding:10px 16px;gap:10px}.site-nav .brand .word{font-size:19px!important;white-space:nowrap}.site-nav .brand .sub{display:none}.site-nav .brand .mark{width:32px!important;height:32px!important}.site-actions{gap:8px}.site-actions .iconbtn{width:38px;height:38px}.site-actions .btn{padding:9px 14px;font-size:14px;min-height:38px}.site-actions .btn .ms{display:none}.hero-copy{padding-top:96px}.hero h1{font-size:44px}.hero p{font-size:16.5px}.hero-ctas{flex-direction:column;align-items:stretch}.hero-ctas .btn{width:100%}}@media(max-width:360px){.site-actions .iconbtn{display:none}}.shell{display:grid;grid-template-columns:minmax(210px,248px) minmax(0,1fr);min-height:100vh}.side{position:sticky;top:0;height:100vh;overflow:auto;background:var(--bg2);border-right:1px solid var(--line);padding:20px 14px;display:flex;flex-direction:column;gap:4px}.side-item{position:relative;display:flex;align-items:center;gap:12px;padding:9px 12px;border-radius:10px;cursor:pointer;font-size:14px;font-weight:500;background:transparent;color:var(--ink);border:none;width:100%;text-align:left}.side-item>*{position:relative;z-index:1}.side-item.on{color:var(--acc2);font-weight:700}.side-item:hover:not(.on){background:var(--card)}.side-pill{position:absolute!important;inset:0;border-radius:10px;background:var(--soft);z-index:0!important}.side-foot{margin-top:auto;padding:16px 12px 4px;border-top:1px solid var(--line);font-size:12px;line-height:1.5;color:var(--mute)}.main{min-width:0;display:flex;flex-direction:column}.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:14px;padding:12px 28px;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.top-search{flex:1;max-width:560px}.top-search input{padding:10px 12px;font-size:14px}.top-powered{margin-left:auto;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--mute);white-space:nowrap}.top-powered b{color:var(--acc2)}.iconbtn-sm{width:38px;height:38px;border-radius:10px;border:1px solid var(--line2);background:var(--card);color:var(--ink);cursor:pointer;display:flex;align-items:center;justify-content:center;flex:none}.me{display:flex;align-items:center;gap:10px;background:none;border:none;cursor:pointer;padding:0}.avatar{width:36px;height:36px;border-radius:50%;background:var(--btn);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;flex:none}.me-text{display:flex;flex-direction:column;line-height:1.25;text-align:left;white-space:nowrap;font-size:13.5px}.me-text span{font-size:12px;color:var(--mute)}.menu{position:absolute;right:0;top:46px;width:250px;padding:8px;z-index:60;box-shadow:0 18px 40px #00000059;transform-origin:top right}.menu-head{display:flex;flex-direction:column;gap:2px;padding:8px 10px 10px;border-bottom:1px solid var(--line);margin-bottom:6px;font-size:13.5px;overflow:hidden;text-overflow:ellipsis}.menu-item{display:flex;align-items:center;gap:10px;width:100%;padding:10px;border-radius:8px;background:none;border:none;color:var(--ink);cursor:pointer;font-size:14px;text-align:left}.menu-item:hover{background:var(--card2);color:var(--ink)}.content{padding:28px;max-width:1320px;width:100%}.tabs,.mobile-only{display:none}@media(max-width:860px){.shell{grid-template-columns:1fr}.side{display:none}.desktop-only{display:none!important}.mobile-only{display:block;flex:1}.top{padding:10px 16px;padding-top:calc(10px + env(safe-area-inset-top))}.content{padding:16px 16px calc(96px + env(safe-area-inset-bottom))}.tabs{display:flex;justify-content:space-around;position:fixed;left:0;right:0;bottom:0;z-index:30;padding:8px 6px calc(10px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:color-mix(in srgb,var(--bg2) 92%,transparent);backdrop-filter:blur(14px)}.tab{position:relative;display:flex;flex-direction:column;align-items:center;gap:3px;min-width:60px;min-height:48px;background:none;border:none;cursor:pointer;font-size:11px;font-weight:600;color:var(--mute);padding:4px 6px}.tab>*{position:relative;z-index:1}.tab.on{color:var(--acc2)}.tab-pill{position:absolute!important;inset:0 4px;border-radius:12px;background:var(--soft);z-index:0!important}}.signin{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;overflow:hidden;padding:32px 16px}.signin-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 30%}.signin-fade{position:absolute;inset:0;background:linear-gradient(180deg,var(--fade0) 0%,transparent 30%,var(--bg) 78%)}@media(min-width:861px){.signin-fade{background:radial-gradient(ellipse at center,color-mix(in srgb,var(--bg) 70%,transparent) 0%,var(--bg) 85%)}}.signin-panel{position:relative;width:100%;max-width:420px;display:flex;flex-direction:column}.signin-card{padding:22px;display:flex;flex-direction:column;gap:12px;background:color-mix(in srgb,var(--card) 88%,transparent);backdrop-filter:blur(10px)}.si-title{font-size:20px;font-weight:800;margin-bottom:2px}.si-row{display:flex;gap:10px;margin-bottom:12px}.si-row .si-input{flex:1;min-width:0}.si-input{width:100%;background:var(--bg);border:1px solid var(--line2);border-radius:12px;color:var(--ink);padding:14px;font-size:15px;outline:none}.si-input:focus{border-color:var(--acc)}.si-msg{font-size:13.5px;line-height:1.45;padding:10px 12px;border-radius:10px}.si-msg.err{background:#f26b6b1f;color:var(--bad)}.si-msg.ok{background:#2fcb8a1f;color:var(--good)}.si-or{display:flex;align-items:center;gap:10px;color:var(--mute);font-size:12px}.si-or:before,.si-or:after{content:"";flex:1;height:1px;background:var(--line2)}.si-links{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}.si-note{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--mute)}.si-foot{text-align:center;font-size:11.5px;color:var(--mute);margin-top:16px}.home-hero{position:relative;overflow:hidden;border-radius:20px;border:1px solid var(--line);background:var(--card)}.home-hero img{position:absolute;right:0;top:0;width:55%;height:100%;object-fit:cover;object-position:60% 40%}.home-hero .fade{position:absolute;inset:0;background:linear-gradient(90deg,var(--card) 42%,transparent 88%)}.home-hero .in{position:relative;padding:32px 32px 28px;display:flex;flex-direction:column;gap:8px}.greet{font-size:clamp(30px,3.4vw,44px);font-weight:800;letter-spacing:-.03em;line-height:1.08}.greet span{color:var(--acc2)}.ex-chip{background:var(--glass);border:1px solid var(--line2);color:var(--ink);border-radius:999px;padding:7px 13px;font-size:13px;cursor:pointer}.grid-auto{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px}.tile{text-align:left;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;display:flex;flex-direction:column;gap:6px;cursor:pointer;color:var(--ink)}.tile .t{font-size:15px;font-weight:700}.tile .d{font-size:13px;line-height:1.45;color:var(--mute)}.stat{background:var(--card2);border:1px solid var(--line);border-radius:12px;padding:14px;display:flex;gap:10px;align-items:center}.stat .v{font-size:22px;font-weight:800}.stat .l{font-size:12px;color:var(--mute)}.row-btn{width:100%;display:flex;justify-content:space-between;gap:12px;align-items:center;background:none;border:none;border-bottom:1px solid var(--line);padding:11px 0;color:var(--ink);font-size:13.5px;cursor:pointer;text-align:left}.row-btn:last-child{border-bottom:none}.level{font-size:11.5px;font-weight:700;border-radius:6px;padding:3px 9px;border:1px solid currentColor;white-space:nowrap}.drill{display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;background:var(--soft);border:1px solid var(--acc);border-radius:16px;padding:22px 24px}.empty{padding:18px;border:1px dashed var(--line2);border-radius:12px;color:var(--mute);font-size:13.5px;line-height:1.5}.ask-layout{display:flex;flex-wrap:wrap;gap:24px;align-items:flex-start}.ask-main{flex:1 1 520px;min-width:0;display:flex;flex-direction:column;gap:16px}.ask-side{flex:1 1 300px;max-width:420px;padding:20px;display:flex;flex-direction:column;gap:12px;position:sticky;top:84px}.qbubble{display:flex;gap:10px;align-items:flex-start;background:var(--card2);border:1px solid var(--line);border-radius:14px;padding:14px 16px;font-size:17px;font-weight:700;line-height:1.4}.tabs-row{display:flex;gap:4px;border-bottom:1px solid var(--line)}.tabs-row .tb{position:relative;display:flex;align-items:center;gap:6px;background:none;border:none;color:var(--mute);font-weight:600;font-size:14px;padding:10px 12px;cursor:pointer}.tabs-row .tb.on{color:var(--acc2)}.tb-line{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--acc2)}.src-card{background:var(--card2);border:1px solid var(--line);border-radius:12px;padding:14px;display:flex;flex-direction:column;gap:4px;text-align:left;color:var(--ink);cursor:pointer;width:100%}.src-card:hover{border-color:var(--acc)}.src-card .k{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:12.5px;font-weight:700;color:var(--mute)}.primary{font-size:11px;font-weight:700;color:var(--acc2);border:1px solid var(--acc);border-radius:999px;padding:2px 8px}.legal{display:flex;gap:12px;align-items:flex-start;border:1px solid var(--line2);border-radius:12px;padding:14px 16px;font-size:13px;line-height:1.55;color:var(--mute)}.followups{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:10px}.fu{display:flex;justify-content:space-between;align-items:center;gap:10px;text-align:left;background:var(--card2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;color:var(--ink);font-size:13.5px;cursor:pointer}.composer{position:sticky;bottom:12px;z-index:5}@media(max-width:860px){.composer{bottom:calc(84px + env(safe-area-inset-bottom))}.ask-side{position:static;max-width:none}}.scrim{position:fixed;inset:0;z-index:80;background:#02060c8c;backdrop-filter:blur(3px);display:flex;justify-content:flex-end}.viewer{width:min(720px,100%);height:100%;background:var(--bg2);border-left:1px solid var(--line);display:flex;flex-direction:column}.viewer-head{display:flex;align-items:center;gap:12px;padding:16px 18px;border-bottom:1px solid var(--line);padding-top:calc(16px + env(safe-area-inset-top))}.viewer-body{flex:1;overflow:auto;padding:18px 0 40px;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:13px;line-height:1.6}.viewer-note{display:flex;align-items:center;gap:8px;padding:10px 18px;font-size:13px;color:var(--mute);border-bottom:1px solid var(--line)}.pdf-pages{display:flex;flex-direction:column;align-items:center;gap:14px;padding:0 16px}.pdf-page{position:relative;background:#fff;box-shadow:0 6px 24px #00000040;border-radius:4px;overflow:hidden;flex:none}.pdf-page canvas{display:block}.pdf-hl{position:absolute;background:#ffd54f6b;mix-blend-mode:multiply;border-radius:2px;pointer-events:none;animation:hl-in .6s ease-out both}@keyframes hl-in{0%{background:#ffd54f00}to{background:#ffd54f6b}}.text-src{padding:0 22px;white-space:pre-wrap;word-break:break-word;font-family:var(--font);font-size:14.5px;line-height:1.7}.text-hit{background:#ffd54f47;box-shadow:inset 3px 0 #f2b23b;border-radius:3px}.bar{height:6px;border-radius:3px;background:var(--line);overflow:hidden}.bar>div{height:100%;background:var(--acc);border-radius:3px}.tag{font-size:12.5px;border:1px solid var(--line2);border-radius:8px;padding:6px 10px}.lib-row{width:100%;display:flex;align-items:center;gap:14px;background:none;border:none;border-bottom:1px solid var(--line);padding:14px 20px;color:var(--ink);text-align:left;cursor:pointer}.lib-row:hover{background:var(--card2)}.lib-row .act{font-size:13px;color:var(--acc2);font-weight:600;white-space:nowrap;display:flex;gap:14px}@media(max-width:860px){.lib-row{padding:13px 14px}}:root{--good: #2FCB8A;--bad: #F26B6B;--warn: #E9A23B;--streak: #FF9A3C;--gold: #F2B23B;--font: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;--gutter: clamp(16px, 4vw, 56px);--bg: #060E1A;--bg2: #08121F;--card: #0B1828;--card2: #0E1E33;--line: #1A2B44;--line2: #24395A;--ink: #EAF0F8;--mute: #94A5BD;--acc: #1C8CFF;--acc2: #45C3FF;--soft: rgba(28,140,255,.14);--btn: #1673E0;--glass: rgba(6,14,26,.6);--band: #0A1626;--fade0: rgba(6,14,26,.55)}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:15px;-webkit-font-smoothing:antialiased}body{min-height:100vh;overflow-x:hidden}a{color:var(--acc2);text-decoration:none}a:hover{color:var(--acc)}button{font-family:inherit;color:inherit}input,textarea{font:inherit}input::placeholder,textarea::placeholder{color:var(--mute)}:focus-visible{outline:2px solid var(--acc2);outline-offset:2px;border-radius:8px}h1,h2,h3{text-wrap:balance}.ms{font-family:Material Symbols Rounded;font-weight:400;font-style:normal;line-height:1;letter-spacing:normal;text-transform:none;display:inline-block;white-space:nowrap;direction:ltr;-webkit-font-feature-settings:"liga";font-feature-settings:"liga";user-select:none}.ms.fill{font-variation-settings:"FILL" 1}.kicker{font-size:12px;letter-spacing:.28em;font-weight:700;color:var(--acc2);text-transform:uppercase}.label{font-size:12px;letter-spacing:.2em;font-weight:700;color:var(--mute);text-transform:uppercase}.mute{color:var(--mute)}.tnum{font-variant-numeric:tabular-nums}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:12px;padding:12px 20px;font-weight:700;font-size:15px;cursor:pointer;background:var(--btn);color:#fff;min-height:44px;transition:filter .15s,transform .15s}.btn:hover{filter:brightness(1.08)}.btn:active{transform:scale(.98)}.btn[disabled]{opacity:.45;cursor:not-allowed}.btn.ghost{background:var(--glass);color:var(--ink);border:1px solid var(--line2);font-weight:600}.btn.outline{background:transparent;color:var(--ink);border:1px solid var(--line2);font-weight:600}.btn.lg{padding:16px 28px;font-size:16px}.linkbtn{background:none;border:none;color:var(--acc2);font-weight:600;font-size:13px;cursor:pointer;padding:6px 0}.card{background:var(--card);border:1px solid var(--line);border-radius:16px}.card2{background:var(--card2);border:1px solid var(--line);border-radius:12px}.chip{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:8px 14px;font-size:13.5px;font-weight:600;cursor:pointer;border:1px solid var(--line2);background:var(--card);color:var(--ink);white-space:nowrap}.chip.on{border-color:var(--acc);background:var(--soft);color:var(--acc2)}.searchbar{display:flex;align-items:center;background:var(--card);border:1px solid var(--line2);border-radius:12px;overflow:hidden}.searchbar input{flex:1;min-width:0;background:transparent;border:none;outline:none;color:var(--ink);font-size:15px;padding:14px 16px}.searchbar .go{align-self:stretch;background:var(--btn);border:none;color:#fff;padding:0 18px;cursor:pointer;display:flex;align-items:center}.searchbar .go[disabled]{opacity:.5;cursor:default}.searchbar .lead{padding-left:14px;color:var(--mute);font-size:20px}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);background:none;border:none;cursor:pointer;padding:0;text-align:left}.brand .mark{width:38px;height:38px;border-radius:11px;background:var(--soft);border:1px solid var(--acc);display:flex;align-items:center;justify-content:center;color:var(--acc2);flex:none}.brand .word{font-weight:800;letter-spacing:-.02em;line-height:1}.brand .word b{color:var(--acc2);font-weight:800}.brand .sub{font-size:9.5px;letter-spacing:.2em;font-weight:600;color:var(--mute);margin-top:3px}.spin{flex:none;width:22px;height:22px;border-radius:50%;border:2.5px solid var(--line2);border-top-color:var(--acc2);animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.shimmer{background:linear-gradient(90deg,var(--card2) 0%,var(--line) 50%,var(--card2) 100%);background-size:200% 100%;animation:shimmer 1.4s ease-in-out infinite;border-radius:8px}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.ans p{margin:0 0 12px;font-size:16px;line-height:1.65;text-wrap:pretty}.ans h4{margin:18px 0 8px;font-size:15px;font-weight:700;color:var(--acc2);letter-spacing:.01em}.ans .li{display:flex;gap:12px;margin:0 0 12px;font-size:15px;line-height:1.6}.ans .li .n{flex:none;width:26px;height:26px;border-radius:50%;background:var(--btn);color:#fff;font-weight:700;font-size:12.5px;display:flex;align-items:center;justify-content:center;margin-top:1px}.ans .li .dot{flex:none;width:7px;height:7px;border-radius:50%;background:var(--acc2);margin-top:10px}.cite{display:inline-flex;align-items:center;gap:4px;vertical-align:1px;margin:0 2px;padding:1px 8px;border-radius:999px;border:1px solid var(--acc);background:var(--soft);color:var(--acc2);font-size:12px;font-weight:700;cursor:pointer;white-space:nowrap}.cite:hover{background:var(--acc);color:#fff}.opt{display:flex;align-items:center;gap:14px;width:100%;text-align:left;border:1.5px solid var(--line2);background:var(--card2);color:var(--ink);border-radius:12px;padding:14px 16px;font-size:15px;line-height:1.45;cursor:pointer;transition:border-color .15s,background .15s}.opt .letter{flex:none;width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;border:1.5px solid var(--line2)}.opt.sel{border-color:var(--acc);background:var(--soft)}.opt.sel .letter{background:var(--btn);color:#fff;border-color:transparent}.opt.right{border-color:var(--good);background:#2fcb8a1f}.opt.right .letter{background:var(--good);color:#fff;border-color:transparent}.opt.wrong{border-color:var(--bad);background:#f26b6b1f}.opt.wrong .letter{background:var(--bad);color:#fff;border-color:transparent}.opt:disabled{cursor:default}.page-title{font-size:28px;font-weight:800;letter-spacing:-.02em;margin:0}.scroll-x{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}.scroll-x::-webkit-scrollbar{display:none}.sep-row{border-bottom:1px solid var(--line)}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.001ms!important;transition-duration:.001ms!important}}