@font-face{font-family:Bricolage Grotesque;font-weight:400 800;font-display:swap;src:url(/fonts/bricolagegrotesque.woff2) format("woff2")}@font-face{font-family:Instrument Sans;font-weight:400 700;font-display:swap;src:url(/fonts/instrumentsans.woff2) format("woff2")}@font-face{font-family:JetBrains Mono;font-weight:100 800;font-display:swap;src:url(/fonts/jetbrainsmono.woff2) format("woff2")}@font-face{font-family:Caveat;font-weight:700;font-display:swap;src:url(/fonts/caveat.woff2) format("woff2")}:root{--bg: #f8f6f1;--bg-2: #eeebe3;--surface: #ffffff;--surface-2: #faf9f6;--ink: #12151d;--ink-2: #3b4150;--muted: #6a6f7c;--faint: #a0a4ae;--line: #e4e1d9;--line-2: #d3cfc4;--accent: #2340d0;--accent-hover: #1a33ad;--accent-ink: #ffffff;--accent-soft: #e8ecfd;--accent-text: #2340d0;--highlight: #ffd74a;--highlight-soft: #fff1bf;--warm: #d9481f;--warm-soft: #fde8e0;--gold: #c27a00;--gold-soft: #fff0cf;--blue: #6a43d6;--blue-soft: #eee8fc;--plum: #b0337a;--plum-soft: #fbe6f1;--good: #168a55;--mid: #c27a00;--weak: #d9481f;--sheet: #ffffff;--sheet-line: #e4e1d9;--shadow-sm: 0 1px 2px rgb(18 21 29 / .06);--shadow: 0 1px 2px rgb(18 21 29 / .05), 0 8px 24px -10px rgb(18 21 29 / .14);--shadow-lg: 0 2px 4px rgb(18 21 29 / .06), 0 24px 48px -18px rgb(18 21 29 / .24);--radius-sm: 8px;--radius: 14px;--radius-lg: 20px;--font-display: "Bricolage Grotesque", "Instrument Sans", ui-sans-serif, system-ui, sans-serif;--font-body: "Instrument Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;--font-hand: "Caveat", "Segoe Print", cursive;--ease: cubic-bezier(.22, 1, .36, 1);--content: 1080px;color-scheme:light}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg: #0e1016;--bg-2: #161922;--surface: #171a23;--surface-2: #1d212c;--ink: #eef0f5;--ink-2: #c6cad5;--muted: #8b90a0;--faint: #5f6473;--line: #262a35;--line-2: #333845;--accent: #8296ff;--accent-hover: #9aabff;--accent-ink: #0b1030;--accent-soft: #1b2142;--accent-text: #9aabff;--highlight: #ffd74a;--highlight-soft: #3a3214;--warm: #ff8a63;--warm-soft: #3a1f17;--gold: #ffbe4d;--gold-soft: #33280f;--blue: #b39cff;--blue-soft: #251d40;--plum: #ff8fc8;--plum-soft: #3a1a2c;--good: #45d18e;--mid: #ffbe4d;--weak: #ff8a63;--sheet: #fbfaf7;--sheet-line: #333845;--shadow-sm: 0 1px 2px rgb(0 0 0 / .35);--shadow: 0 1px 2px rgb(0 0 0 / .35), 0 10px 26px -10px rgb(0 0 0 / .55);--shadow-lg: 0 2px 6px rgb(0 0 0 / .35), 0 26px 52px -18px rgb(0 0 0 / .7);color-scheme:dark}}:root[data-theme=dark]{--bg: #0e1016;--bg-2: #161922;--surface: #171a23;--surface-2: #1d212c;--ink: #eef0f5;--ink-2: #c6cad5;--muted: #8b90a0;--faint: #5f6473;--line: #262a35;--line-2: #333845;--accent: #8296ff;--accent-hover: #9aabff;--accent-ink: #0b1030;--accent-soft: #1b2142;--accent-text: #9aabff;--highlight: #ffd74a;--highlight-soft: #3a3214;--warm: #ff8a63;--warm-soft: #3a1f17;--gold: #ffbe4d;--gold-soft: #33280f;--blue: #b39cff;--blue-soft: #251d40;--plum: #ff8fc8;--plum-soft: #3a1a2c;--good: #45d18e;--mid: #ffbe4d;--weak: #ff8a63;--sheet: #fbfaf7;--sheet-line: #333845;--shadow-sm: 0 1px 2px rgb(0 0 0 / .35);--shadow: 0 1px 2px rgb(0 0 0 / .35), 0 10px 26px -10px rgb(0 0 0 / .55);--shadow-lg: 0 2px 6px rgb(0 0 0 / .35), 0 26px 52px -18px rgb(0 0 0 / .7);color-scheme:dark}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;text-size-adjust:100%;background:var(--bg)}body{margin:0;min-height:100dvh;background:var(--bg);color:var(--ink);font-family:var(--font-body);font-size:15px;line-height:1.55;font-feature-settings:"cv11","ss01";-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}img{max-width:100%;display:block}button,input,select{font:inherit;color:inherit}button{cursor:pointer}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}::selection{background:var(--accent-soft)}.num{font-variant-numeric:tabular-nums}.inline-icon{width:18px;height:18px;flex:none}.serif{font-family:var(--font-display)}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}h1,h2,h3{font-family:var(--font-display);font-weight:650;letter-spacing:-.03em;line-height:1.15;margin:0}h1{font-size:clamp(30px,4.4vw,44px)}h2{font-size:clamp(22px,2.6vw,28px)}h3{font-size:19px}p{margin:0}.muted{color:var(--muted)}.eyebrow{font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.app{min-height:100dvh;display:flex;flex-direction:column}.topbar{position:sticky;top:0;z-index:20;padding-top:env(safe-area-inset-top,0px);background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid color-mix(in srgb,var(--line) 70%,transparent)}.topbar-inner{max-width:var(--content);margin:0 auto;padding:12px 24px;display:flex;align-items:center;gap:24px}.wordmark{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:var(--font-display);font-size:21px;font-weight:500;letter-spacing:-.02em}.subject-chip{display:inline-flex;align-items:center;gap:8px;padding:4px 12px 4px 4px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-size:14px;font-weight:600;text-decoration:none;transition:border-color .2s var(--ease)}.subject-chip:hover{border-color:var(--line-2)}.subject-chip .subject-icon{width:28px;height:28px;border-radius:50%}.subject-chip .subject-icon svg{width:17px;height:17px}@media(max-width:560px){.subject-chip{padding:3px}.subject-chip-name{display:none}}.wordmark em{font-style:italic;color:var(--accent-text)}.logo{width:30px;height:30px;flex:none}.nav{display:flex;gap:4px;margin-left:auto}.nav a{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;color:var(--ink-2);text-decoration:none;font-weight:500;font-size:14px;transition:background .2s var(--ease),color .2s var(--ease)}.nav a:hover{background:var(--bg-2);color:var(--ink)}.nav a[aria-current=page]{background:var(--surface);color:var(--ink);box-shadow:var(--shadow-sm),inset 0 0 0 1px var(--line)}.nav svg{width:17px;height:17px}.tabbar{display:none}main{flex:1;width:100%;max-width:var(--content);margin:0 auto;padding:36px 24px 96px}.page-enter{animation:rise .5s var(--ease) backwards}@keyframes rise{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}@keyframes fade{0%{opacity:0}to{opacity:1}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}@media(max-width:900px){.nav{display:none}.nav~.tip-anchor{margin-left:auto}.tabbar{position:fixed;inset:auto 0 0 0;z-index:30;display:grid;grid-template-columns:repeat(4,1fr);padding:6px 8px calc(6px + env(safe-area-inset-bottom,0px));background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:saturate(1.4) blur(16px);-webkit-backdrop-filter:saturate(1.4) blur(16px);border-top:1px solid var(--line)}.tabbar a{display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 0;border-radius:12px;font-size:11px;font-weight:600;color:var(--muted);text-decoration:none}.tabbar a[aria-current=page]{color:var(--accent-text)}.tabbar svg{width:22px;height:22px}main{padding-bottom:calc(110px + env(safe-area-inset-bottom,0px))}}@media(max-width:760px){.topbar-inner{padding:10px 16px}main{padding:24px 16px calc(110px + env(safe-area-inset-bottom,0px))}}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;border-radius:999px;border:1px solid transparent;font-weight:600;font-size:15px;letter-spacing:-.005em;text-decoration:none;white-space:nowrap;transition:transform .15s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease)}.btn:active{transform:scale(.97)}.btn svg{width:18px;height:18px}.btn-primary{background:var(--accent);color:var(--accent-ink);box-shadow:inset 0 -2px #0000002e}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:disabled{opacity:.45;cursor:not-allowed;box-shadow:none}.btn-lg{min-height:54px;padding:0 28px;font-size:16px}.btn-ghost{background:transparent;color:var(--ink-2);border-color:var(--line-2)}.btn-ghost:hover{background:var(--surface);color:var(--ink)}.btn-quiet{background:transparent;color:var(--muted);min-height:36px;padding:0 12px}.btn-quiet:hover{color:var(--ink);background:var(--bg-2)}.icon-btn{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink-2);transition:background .2s var(--ease),color .2s var(--ease)}.icon-btn:hover{color:var(--ink);background:var(--surface-2)}.icon-btn svg{width:18px;height:18px}.chip{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-size:12.5px;font-weight:600;line-height:1.4;background:var(--bg-2);color:var(--ink-2);white-space:nowrap}.chip svg{width:13px;height:13px}.chip-new{background:var(--accent-soft);color:var(--accent-text)}.chip-retry{background:var(--warm-soft);color:var(--warm)}.chip-review{background:var(--blue-soft);color:var(--blue)}.chip-practice{background:var(--gold-soft);color:var(--gold)}.chip-outline{background:transparent;box-shadow:inset 0 0 0 1px var(--line-2);color:var(--muted);font-weight:500}.segmented{display:inline-flex;flex-wrap:wrap;gap:6px}.segmented button{min-width:64px;min-height:44px;padding:0 16px;border-radius:999px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink-2);font-weight:600;font-variant-numeric:tabular-nums;transition:all .2s var(--ease)}.segmented button:hover{border-color:var(--ink-2);color:var(--ink)}.segmented button[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:var(--bg)}.field{display:grid;gap:8px}.field label{font-weight:600;font-size:14px}.input{width:100%;min-height:46px;padding:0 14px;border-radius:12px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}.input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 18%,transparent)}.input::placeholder{color:var(--faint)}.check{-moz-appearance:none;appearance:none;-webkit-appearance:none;flex:none;width:22px;height:22px;margin:0;border-radius:7px;border:1.5px solid var(--line-2);background:var(--surface);display:grid;place-items:center;transition:all .18s var(--ease)}.check:after{content:"";width:11px;height:6px;border:2px solid var(--accent-ink);border-top:0;border-right:0;transform:rotate(-45deg) translate(1px,-1px) scale(.4);opacity:0;transition:all .18s var(--ease)}.check:checked{background:var(--accent);border-color:var(--accent)}.check:checked:after{opacity:1;transform:rotate(-45deg) translate(1px,-1px) scale(1)}.check:indeterminate{background:var(--accent);border-color:var(--accent)}.check:indeterminate:after{width:10px;height:0;border-left:0;opacity:1;transform:none}.bar{height:8px;border-radius:999px;background:var(--bg-2);overflow:hidden}.bar>span{display:block;height:100%;border-radius:inherit;transition:width .8s var(--ease)}.divider{height:1px;background:var(--line);border:0;margin:0}.screen-loading{min-height:60vh}.splash{min-height:100dvh;display:grid;place-items:center;gap:16px;color:var(--muted)}.splash .logo{width:44px;height:44px;animation:breathe 1.6s var(--ease) infinite alternate}@keyframes breathe{0%{opacity:.4;transform:scale(.96)}to{opacity:1;transform:scale(1)}}.empty{text-align:center;padding:48px 24px;display:grid;justify-items:center;gap:12px}.empty .art{width:120px;height:120px;margin-bottom:8px}.onboard{height:100dvh;display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);overflow:hidden}.onboard-art{position:relative;overflow:hidden;background-color:#141a3a;background-image:linear-gradient(rgb(255 255 255 / .05) 1px,transparent 1px),linear-gradient(90deg,rgb(255 255 255 / .05) 1px,transparent 1px);background-size:28px 28px;color:#f2f3f8;display:flex;flex-direction:column;gap:24px;padding:40px clamp(24px,4vw,56px)}.onboard-art .wordmark{color:#f2f3f8}.onboard-art .brand b{color:#ffd74a}.onboard-art .quote{max-width:440px;font-family:var(--font-display);font-size:clamp(26px,2.6vw,36px);line-height:1.12;letter-spacing:-.02em}.onboard-art .quote em{font-style:normal;color:#12151d;background:#ffd74a;padding:0 .12em;border-radius:3px;box-decoration-break:clone;-webkit-box-decoration-break:clone}.sheets{position:relative;flex:1;min-height:0;display:grid;place-items:center}.sheets .sheet-card{position:absolute;width:clamp(170px,18vw,250px);aspect-ratio:.74;max-height:92%;background:var(--sheet);border-radius:16px;box-shadow:var(--shadow-lg);padding:20px 18px;display:grid;align-content:start;gap:10px;color:#29261f;animation:float 7s ease-in-out infinite}.sheets .sheet-card:nth-child(1){translate:-58% 4%;rotate:-9deg;background:#eef0f6;animation-delay:-2s}.sheets .sheet-card:nth-child(2){translate:-5% -6%;rotate:-1deg;background:#f6f7fb;animation-delay:-4s}.sheets .sheet-card:nth-child(3){translate:48% 6%;rotate:7deg}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.sheet-card .ln{height:6px;border-radius:4px;background:#e6e8ef}.sheet-card .ln.short{width:55%}.sheet-card .ln.mid{width:80%}.sheet-card .tag{justify-self:start;font:600 10px/1 var(--font-mono);letter-spacing:.04em;padding:5px 8px;border-radius:99px}.sheet-card .t-new{background:#e8ecfd;color:#2340d0}.sheet-card .t-retry{background:#fde8e0;color:#d9481f}.sheet-card .t-old{background:#fff0cf;color:#a86a00}.sheet-card .q{font:600 13px/1.3 var(--font-display);color:#12151d}.sheet-card .mk{justify-self:end;font:600 12px/1 var(--font-mono);color:#8b90a0}@media(max-height:640px){.sheets{visibility:hidden}}.onboard-panel{display:flex;flex-direction:column;min-height:0;overflow-y:auto;scroll-padding-bottom:120px}.onboard-inner{flex:1;width:100%;max-width:620px;margin:0 auto;padding:40px clamp(24px,4vw,48px) 32px}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:0 0 40px;padding:0;list-style:none}.steps li{display:grid;gap:8px}.steps .bar{height:4px;border-radius:99px;background:var(--line);transition:background .4s var(--ease)}.steps .label{font-size:12px;font-weight:600;color:var(--faint)}.steps li.on .bar,.steps li.done .bar{background:var(--accent)}.steps li.on .label{color:var(--ink)}.steps li.done .label{color:var(--muted)}.onboard-body{display:grid;grid-template-columns:minmax(0,1fr);align-content:start;gap:28px}.onboard-body .lede{font-size:17px;color:var(--ink-2);max-width:48ch}.hint{font-size:13.5px;color:var(--muted)}.onboard-foot{position:sticky;bottom:0;z-index:5;margin-top:auto;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom,0px)}.onboard-foot-inner{max-width:620px;margin:0 auto;padding:16px clamp(24px,4vw,48px);display:flex;align-items:center;justify-content:space-between;gap:12px}.foot-note{font-size:13.5px;color:var(--muted);margin-left:auto}.onboard-panel,.onboard-foot-inner>*{min-width:0}.onboard-foot-inner>.btn{flex:none}.onboard-foot-inner>.btn-primary{flex:0 1 auto;white-space:normal;text-align:center}@media(max-width:420px){.topics-note{display:none}}@media(max-width:340px){.chapter .chapter-head,.chapter .chapter-head label{gap:10px}.chapter .chapter-head{padding:12px 8px 12px 12px}.chapter-num{display:none}.chapter .expand{font-size:0;padding:8px}.chapter .subtopic-list{padding-left:12px}.onboard-foot-inner>.btn-primary{padding-left:16px;padding-right:16px;white-space:nowrap}}.points{display:grid;gap:18px;padding:0;margin:0;list-style:none}.points li{display:grid;grid-template-columns:40px 1fr;gap:14px;align-items:start}.points .dot{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent-text)}.points .dot svg{width:20px;height:20px}.points strong{display:block;font-weight:600;margin-bottom:2px}.subjects{display:grid;gap:8px}.subject{position:relative;display:flex;align-items:center;gap:14px;padding:12px 14px;border-radius:var(--radius);border:1px solid var(--line);background:var(--surface);text-align:left;transition:all .2s var(--ease)}.subject:not(:disabled):hover{border-color:var(--line-2);box-shadow:var(--shadow);transform:translateY(-1px)}.subject[aria-pressed=true]{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 18%,transparent)}.subject:disabled{cursor:default}.subject:disabled .subject-icon,.subject:disabled .subject-text{opacity:.55}.subject-icon{width:48px;height:48px;flex:none;border-radius:14px;display:grid;place-items:center}.subject-icon svg{width:26px;height:26px}.subject-9709 .subject-icon,.subject-4024 .subject-icon{background:var(--accent-soft);color:var(--accent-text)}.subject[aria-pressed=true] .subject-icon,.subject-9709[aria-pressed=true] .subject-icon,.subject-4024[aria-pressed=true] .subject-icon{background:var(--accent);color:var(--accent-ink)}.subject-9702 .subject-icon,.subject-9702-P4 .subject-icon,.subject-5054 .subject-icon{background:var(--blue-soft);color:var(--blue)}.subject-9701 .subject-icon,.subject-5070 .subject-icon{background:var(--plum-soft);color:var(--plum)}.subject-9700 .subject-icon,.subject-5090 .subject-icon{background:color-mix(in srgb,var(--good) 16%,var(--surface));color:var(--good)}.subject-9618 .subject-icon,.subject-2210 .subject-icon{background:var(--gold-soft);color:var(--gold)}.subject .subject-icon{width:42px;height:42px;border-radius:12px}.subject .subject-icon svg{width:23px;height:23px}.subject-text{display:grid;min-width:0}.subject .name{font-weight:600}.subject .detail{font-size:13px;color:var(--muted)}.subject .tick{flex:none;margin-left:auto;width:28px;height:28px;border-radius:99px;display:grid;place-items:center;box-shadow:inset 0 0 0 1.5px var(--line-2);color:transparent;transition:background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease)}.subject[aria-pressed=true] .tick{background:var(--accent);color:var(--accent-ink);box-shadow:none;animation:pop .28s var(--ease)}.subject .tick svg{width:16px;height:16px}.subject .soon{margin-left:auto;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--faint);border:1px solid var(--line-2);border-radius:99px;padding:3px 8px}.time-cards{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}.time-cards button{display:grid;justify-items:center;gap:0;padding:14px 4px 12px;border-radius:16px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink-2);transition:all .2s var(--ease)}.time-cards strong{font-family:var(--font-display);font-size:28px;font-weight:500;line-height:1.05;font-variant-numeric:tabular-nums}.time-cards span{font-size:12.5px;color:var(--muted)}.time-cards button:hover{border-color:var(--ink-2)}.time-cards button[aria-checked=true]{background:var(--ink);border-color:var(--ink);color:var(--bg)}.time-cards button[aria-checked=true] span{color:color-mix(in srgb,var(--bg) 70%,transparent)}.sessions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.session{display:grid;gap:2px;padding:14px 16px;border-radius:14px;border:1px solid var(--line-2);background:var(--surface);text-align:left;transition:all .2s var(--ease)}.session:hover{border-color:var(--ink-2)}.session-name{font-weight:600}.session-meta{font-size:12.5px;color:var(--muted)}.session[aria-checked=true]{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 16%,transparent)}.session[aria-checked=true] .session-name{color:var(--accent-text)}.summary-card{display:flex;gap:14px;align-items:center;padding:16px 18px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line)}.summary-card .icon{width:42px;height:42px;flex:none;border-radius:12px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent-text)}.summary-card .icon svg{width:20px;height:20px}@media(max-width:900px){.onboard{height:auto;min-height:100dvh;grid-template-columns:minmax(0,1fr);overflow:visible}.onboard-art{display:none}.onboard-panel{overflow:visible;min-height:100dvh}.onboard-inner{padding:24px 20px}.onboard-foot-inner{padding:12px 20px}.steps{margin-bottom:28px}.subjects,.sessions{grid-template-columns:1fr}.time-cards strong{font-size:22px}}.picker{display:grid;gap:10px}.picker-search{position:relative}.picker-search svg{position:absolute;left:14px;top:50%;width:18px;height:18px;transform:translateY(-50%);color:var(--faint);pointer-events:none}.picker-search .input{padding-left:42px}.chapter{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}.chapter.on{border-color:color-mix(in srgb,var(--accent) 45%,var(--line))}.chapter-head{display:flex;align-items:center;gap:14px;padding:14px 14px 14px 16px}.chapter-head label{display:flex;align-items:center;gap:14px;flex:1;min-width:0;cursor:pointer}.chapter-num{font:600 12px/1 var(--font-body);color:var(--faint);font-variant-numeric:tabular-nums;width:22px}.chapter-name{font-weight:600}.chapter-sub{font-size:13px;color:var(--muted)}.expand{display:inline-flex;align-items:center;gap:4px;padding:6px 10px;border-radius:999px;border:0;background:transparent;color:var(--muted);font-size:13px;font-weight:500}.expand:hover{background:var(--bg-2);color:var(--ink)}.expand svg{width:16px;height:16px;transition:transform .25s var(--ease)}.expand[aria-expanded=true] svg{transform:rotate(180deg)}.subtopic-list{display:grid;gap:2px;padding:0 12px 12px 48px;animation:fade .25s var(--ease)}.subtopic{display:grid;grid-template-columns:1fr auto;align-items:start;border-radius:12px;transition:background .2s var(--ease)}.subtopic:hover,.subtopic.open{background:var(--surface-2)}.subtopic-main{display:flex;align-items:flex-start;gap:12px;min-width:0;padding:10px;cursor:pointer}.subtopic-main>span>span{display:block}.subtopic-more{display:grid;place-items:center;width:36px;height:36px;margin:4px 4px 0 0;border:0;border-radius:999px;background:transparent;color:var(--faint)}.subtopic-more:hover{background:var(--bg-2);color:var(--ink)}.subtopic-more svg{width:16px;height:16px;transition:transform .25s var(--ease)}.subtopic-more[aria-expanded=true] svg{transform:rotate(180deg)}.subtopic-outcomes{grid-column:1 / -1;padding:0 14px 12px 42px;font-size:13px;color:var(--muted);animation:rise .25s var(--ease) backwards}.subtopic-outcomes-head{display:block;margin-bottom:4px;font-size:12px;font-weight:600;color:var(--faint)}.subtopic-outcomes ul{margin:0;padding-left:16px;display:grid;gap:4px}.subtopic-outcomes li:first-letter{text-transform:uppercase}.subtopic .check{width:20px;height:20px;margin-top:1px}.subtopic-name{font-weight:500;font-size:14.5px}.subtopic-desc{font-size:13px;color:var(--muted)}.subtopic:not(.open) .subtopic-desc{overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.picker-summary{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px;color:var(--muted)}.hello{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:28px}.hello h1 em{font-style:italic;color:var(--accent-text)}.hello .date{margin-top:8px;color:var(--muted)}.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:20px}.stat{padding:18px 20px;display:flex;align-items:center;gap:14px}.stat .icon{width:44px;height:44px;flex:none;border-radius:14px;display:grid;place-items:center}.stat .icon svg{width:22px;height:22px}.stat .value{font-family:var(--font-display);font-size:26px;font-weight:500;line-height:1.1;letter-spacing:-.02em;font-variant-numeric:tabular-nums}.stat .label{font-size:13px;color:var(--muted)}.today-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:20px;align-items:start}.hero{position:relative;overflow:hidden;padding:32px}.hero>*{position:relative}.hero h2{margin:10px 0 8px}.hero .sub{color:var(--ink-2);max-width:48ch}.time-pick{margin:26px 0 22px;display:grid;gap:10px}.time-pick .eyebrow{display:flex;justify-content:space-between}.preview{display:grid;gap:14px;padding:18px;border-radius:var(--radius);background:var(--surface-2);border:1px dashed var(--line-2);margin-bottom:24px}.preview-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.preview-figures{display:flex;gap:28px;flex-wrap:wrap}.preview-figures div{display:grid}.preview-figures strong{font-family:var(--font-display);font-size:24px;font-weight:500;font-variant-numeric:tabular-nums;line-height:1.1}.preview-figures span{font-size:12.5px;color:var(--muted)}.hero-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.side{display:grid;gap:20px}.side .card{padding:22px}.side h3{margin-bottom:14px}.focus-list{display:grid;gap:14px;padding:0;margin:0;list-style:none}.focus-list li{display:grid;gap:6px}.focus-list .row{display:flex;justify-content:space-between;gap:12px;font-size:14px}.focus-list .row span:last-child{color:var(--muted);font-variant-numeric:tabular-nums}.done-hero{text-align:center;display:grid;justify-items:center;gap:10px}.progress-ring{position:relative;display:grid;place-items:center}.progress-ring svg{transform:rotate(-90deg)}.progress-ring .ring-track{stroke:var(--bg-2)}:root[data-theme=dark] .progress-ring .ring-track{stroke:var(--line-2)}:root[data-theme=dark] .bar{background:var(--line)}@media(prefers-color-scheme:dark){:root:not([data-theme=light]) .progress-ring .ring-track{stroke:var(--line-2)}:root:not([data-theme=light]) .bar{background:var(--line)}}.progress-ring .ring-value{transition:stroke-dashoffset 1s var(--ease)}.progress-ring .ring-label{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;text-align:center;line-height:1.1}.progress-ring .ring-label strong{font-family:var(--font-display);font-weight:500;font-size:30px;letter-spacing:-.02em;font-variant-numeric:tabular-nums}.progress-ring .ring-label span{display:block;font-size:12px;color:var(--muted)}.resume-meter{display:grid;gap:8px;margin:22px 0 24px}@media(max-width:900px){.today-grid{grid-template-columns:1fr}}@media(max-width:560px){.stats{grid-template-columns:1fr 1fr 1fr;gap:8px}.stat{flex-direction:column;align-items:flex-start;gap:10px;padding:14px}.stat .icon{width:36px;height:36px;border-radius:11px}.stat .icon svg{width:18px;height:18px}.stat .value{font-size:22px}.stat .label{font-size:12px}.hero{padding:22px}.segmented button{min-width:0;flex:1 1 0;padding:0 10px}.segmented{display:flex;flex-wrap:nowrap}.segmented .unit{display:none}}.lift{transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease)}a.lift:hover,.lift:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.flame-on svg{animation:flicker 2.4s ease-in-out infinite;transform-origin:50% 90%}@keyframes flicker{0%,to{transform:scale(1) rotate(0)}30%{transform:scale(1.08) rotate(-3deg)}60%{transform:scale(.97) rotate(2deg)}}.more{margin-top:28px;padding-top:28px;border-top:1px solid var(--line)}.week{display:flex;gap:6px;padding:8px 10px;border-radius:999px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm)}.week .day{display:grid;justify-items:center;gap:4px;width:30px}.week .dot{width:24px;height:24px;border-radius:99px;display:grid;place-items:center;background:var(--bg-2);color:var(--accent-ink)}.week .dot svg{width:14px;height:14px;stroke-width:2.6}.week .done .dot{background:var(--accent)}.week .today .dot{background:transparent;box-shadow:inset 0 0 0 2px var(--accent)}.week .future .dot{background:transparent;box-shadow:inset 0 0 0 1.5px var(--line-2)}.week .dname{font-size:11px;font-weight:600;color:var(--faint)}.week .today .dname{color:var(--accent-text)}.contents{display:grid;gap:4px;margin-bottom:24px;border-radius:var(--radius);border:1px solid var(--line);background:var(--surface-2);overflow:hidden}.empty-contents{gap:14px;padding:18px}.contents-head{display:flex;align-items:center;justify-content:space-between;gap:8px 16px;flex-wrap:wrap;padding:14px 16px 10px;font-size:14px;color:var(--muted)}.contents-head strong{color:var(--ink);font-weight:600}.reasons{display:flex;gap:12px;flex-wrap:wrap}.reason-dot{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:500;cursor:help}.reason-dot:before{content:"";width:8px;height:8px;border-radius:99px;background:currentColor}.dot-new{color:var(--accent-text)}.dot-retry{color:var(--warm)}.dot-review{color:var(--blue)}.dot-practice{color:var(--gold)}.contents-list{list-style:none;margin:0;padding:0 6px 6px;display:grid;gap:2px}.contents-list li{display:grid;grid-template-columns:28px minmax(0,1fr) auto 70px;gap:12px;align-items:center;padding:10px;border-radius:12px;background:var(--surface);animation:rise .4s var(--ease) backwards}.contents-list .n{width:28px;height:28px;border-radius:9px;display:grid;place-items:center;background:var(--bg-2);font-size:13px;font-weight:700;color:var(--ink-2)}.contents-list .what{display:grid;min-width:0}.contents-list .topic{font-weight:600;font-size:14.5px}.contents-list .where{font-size:12.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.contents-list .m{display:grid;justify-items:end;font-size:13.5px;font-weight:600}.contents-list .m small{font-weight:400;font-size:12px;color:var(--muted)}.focus-empty{display:flex;gap:12px;align-items:flex-start;color:var(--muted);font-size:14px}.focus-empty svg{width:20px;height:20px;flex:none;margin-top:2px;color:var(--faint)}.chapter-list{list-style:none;margin:0;padding:0;display:grid;gap:4px}.chapter-list li{display:flex;align-items:center;gap:10px;padding:6px 0;font-size:14px}.chapter-chip{font-size:11.5px;font-weight:700;color:var(--muted);background:var(--bg-2);border-radius:7px;padding:2px 6px}.chapter-list .name{flex:1}.chapter-list .score{font-weight:600;font-size:13px;color:var(--faint)}@media(max-width:760px){.hello{align-items:flex-start}.week{width:100%;justify-content:space-between}.contents-list li{grid-template-columns:26px minmax(0,1fr) auto}.contents-list .m{white-space:nowrap}.contents-list .chip,.contents-list li>.tip-anchor{display:none}}.sheet.loading{min-height:80px;background:linear-gradient(90deg,#f3f0ea 25%,#fbfaf7,#f3f0ea 75%) 0 0 / 200% 100%;animation:shimmer 1.2s linear infinite}.sheet.loading img{opacity:0}.sheet img{transition:opacity .25s var(--ease)}.lightbox-hint{margin:14px 0 0;text-align:center;font-size:13px;color:#fff9}.confetti{position:fixed;top:0;right:0;bottom:0;left:0;z-index:120;pointer-events:none;overflow:hidden}.confetti span{position:absolute;top:-12px;width:9px;height:14px;border-radius:2px;animation-name:fall;animation-timing-function:cubic-bezier(.25,.6,.4,1);animation-fill-mode:forwards}@keyframes fall{to{transform:translate(var(--drift),105vh) rotate(calc(var(--rot) + 540deg));opacity:.2}}.paper-head{position:sticky;top:calc(55px + env(safe-area-inset-top,0px));z-index:10;margin:-36px -24px 28px;padding:14px 24px;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:16px}.paper-head .title{display:grid;min-width:0}.paper-head .title strong{font-family:var(--font-display);font-weight:500;font-size:18px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.paper-head .title span{font-size:13px;color:var(--muted)}.paper-head .meter{flex:1;max-width:260px;margin-left:auto;display:grid;gap:6px;font-size:12.5px;color:var(--muted)}.paper-head .meter .row{display:flex;justify-content:space-between}.timer{display:inline-flex;align-items:center;gap:8px;padding:0 14px;min-height:40px;border-radius:999px;border:1px solid var(--line);background:var(--surface);font-variant-numeric:tabular-nums;font-weight:600;font-size:14px;color:var(--ink-2)}.timer svg{width:16px;height:16px}.timer.paused{color:var(--muted)}.paper-intro{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:end;margin-bottom:28px}.paper-intro .how{display:flex;gap:18px;flex-wrap:wrap;margin-top:14px;font-size:14px;color:var(--muted)}.paper-intro .how span{display:inline-flex;align-items:center;gap:8px}.paper-intro .how b{display:inline-grid;place-items:center;width:22px;height:22px;border-radius:99px;background:var(--bg-2);color:var(--ink-2);font-size:12px}.paper-tools{display:flex;flex-direction:column;align-items:flex-end;gap:10px}.mode-switch{border:0;background:transparent;font:inherit;display:inline-flex;align-items:center;gap:10px;padding:6px 4px;font-size:14px;font-weight:600;color:var(--ink-2)}.mode-switch .track{position:relative;width:38px;height:22px;border-radius:99px;background:var(--bg-2);border:1px solid var(--line-2);transition:background .2s var(--ease),border-color .2s var(--ease)}.mode-switch .track:after{content:"";position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:var(--surface);box-shadow:0 1px 2px #00000040;transition:transform .2s var(--ease)}.mode-switch[aria-checked=true] .track{background:var(--accent);border-color:var(--accent)}.mode-switch[aria-checked=true] .track:after{transform:translate(16px)}.ms-all{margin-top:28px;overflow:hidden;scroll-margin-top:90px}.ms-all-head{display:flex;align-items:center;justify-content:space-between;gap:12px 20px;flex-wrap:wrap;padding:22px;border-bottom:1px solid var(--line)}.ms-all-head h2{margin:0}.ms-all-head p{margin:4px 0 0}.ms-all-item{border-bottom:1px solid var(--line)}.ms-all-item:last-child{border-bottom:0}.ms-all-item h3{display:flex;align-items:center;gap:12px;margin:0;padding:18px 22px 6px;font-size:16px}.ms-all-part{scroll-margin-top:120px}.ms-all-part .mark-row{padding-top:10px;padding-bottom:6px}.items{display:grid;gap:28px}.item{overflow:hidden;scroll-margin-top:140px}.item-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:18px 22px;border-bottom:1px solid var(--line)}.item-num{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;background:var(--ink);color:var(--bg);font-weight:700;font-size:14px;font-variant-numeric:tabular-nums}.item-title{display:grid;min-width:0;margin-right:auto}.item-title strong{font-weight:600;font-size:15px}.item-title span{font-size:13px;color:var(--muted)}.item-topics{display:flex;gap:6px;flex-wrap:wrap;padding:14px 22px 0}.item-body{padding:18px 22px 22px;display:grid;gap:14px}.sheet{position:relative;display:block;width:100%;margin:0;text-align:left;font:inherit;background:var(--sheet);border-radius:12px;border:1px solid var(--sheet-line);padding:clamp(10px,2vw,18px);cursor:zoom-in;transition:box-shadow .2s var(--ease)}.sheet:hover{box-shadow:var(--shadow)}.sheet img{width:100%;height:auto;-webkit-user-select:none;user-select:none}.sheet .zoom-hint{position:absolute;right:10px;top:10px;width:30px;height:30px;border-radius:99px;display:grid;place-items:center;background:#ffffffe6;color:#5c574d;box-shadow:0 1px 3px #0000001f;opacity:0;transition:opacity .2s var(--ease)}.sheet:hover .zoom-hint{opacity:1}@media(hover:none){.sheet .zoom-hint{opacity:.85;width:26px;height:26px;right:6px;top:6px}}.sheet .zoom-hint svg{width:15px;height:15px}.exam{--surface: #ffffff;--surface-2: #faf9f6;--bg-2: #eeebe3;--ink: #12151d;--ink-2: #3b4150;--muted: #6a6f7c;--faint: #a0a4ae;--line: #e9e6de;--line-2: #d3cfc4;--accent: #2340d0;--accent-text: #2340d0;--accent-soft: #e8ecfd;--good: #168a55;--mid: #c27a00;--weak: #d9481f;color-scheme:light;color:var(--ink);background:#fff;border:1px solid var(--sheet-line);border-radius:14px;overflow:hidden;box-shadow:0 1px #28221808}.sheet.bare{border:0;border-radius:0;background:transparent;padding:14px clamp(10px,2.2vw,22px) 6px}.sheet.bare:hover{box-shadow:none}.exam-context{display:grid;background:var(--surface-2);border-bottom:1px dashed var(--line-2)}.exam-context .note{display:flex;gap:8px;align-items:center;padding:12px clamp(10px,2.2vw,22px) 0;font-size:13px;color:var(--muted)}.exam-context .note svg{width:16px;height:16px;flex:none}.exam-context .sheet{opacity:.7}.part{display:grid;scroll-margin-top:150px}.part+.part{border-top:1px solid var(--line)}.mark-row{display:flex;align-items:center;gap:10px 16px;flex-wrap:wrap;padding:8px clamp(10px,2.2vw,22px) 16px}.mark-row .btn{min-height:40px;padding:0 16px;font-size:14px}.your-marks{display:inline-flex;align-items:center;gap:10px;flex-wrap:wrap;margin-left:auto;animation:fade .25s var(--ease)}.your-marks .label{font-size:13px;font-weight:600;color:var(--muted)}.marks{display:inline-flex;flex-wrap:wrap;gap:6px}.marks button{width:40px;height:40px;border-radius:12px;border:1px solid var(--line-2);background:var(--surface);font-weight:600;font-variant-numeric:tabular-nums;color:var(--ink-2);transition:all .15s var(--ease)}.marks button:not(:disabled):hover{border-color:var(--ink-2);color:var(--ink)}.marks button:disabled{cursor:default}.marks button:disabled:not([aria-pressed=true]){opacity:.4}.marks button[aria-pressed=true]{color:#fff;border-color:transparent;transform:scale(1.04)}.marks button[aria-pressed=true].full{background:var(--good)}.marks button[aria-pressed=true].some{background:var(--mid)}.marks button[aria-pressed=true].none{background:var(--weak)}.ms{display:grid;gap:2px;background:#f3f5fe;border-top:1px solid #dfe4fb;padding-top:14px;animation:fade .3s var(--ease)}.ms .sheet.bare{padding-top:4px;padding-bottom:16px}.ms-label{display:inline-flex;align-items:center;gap:8px;padding:0 clamp(10px,2.2vw,22px);font-size:12px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--accent-text)}.ms-label svg{width:15px;height:15px}.mcq-ms{display:block;max-width:600px}img.mcq-ms{width:100%}.mcq-answer{margin:0;padding:6px clamp(10px,2.2vw,22px) 18px;font-size:17px}.mcq-answer strong{display:inline-grid;place-items:center;width:34px;height:34px;margin-left:6px;border-radius:50%;border:2px solid var(--good);color:var(--good);font-size:18px}.finish{margin-top:36px;padding:28px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}.finish p{color:var(--muted);margin-top:4px}@media(max-width:760px){.paper-head{top:calc(51px + env(safe-area-inset-top,0px));margin:-24px -16px 20px;padding:12px 16px}.paper-head .meter{display:none}.paper-intro{grid-template-columns:1fr}.paper-tools{flex-direction:row;flex-wrap:wrap;align-items:center}.ms-all-head,.ms-all-item h3,.item-head,.item-body{padding-left:14px;padding-right:14px}.item-topics{padding:12px 14px 0}.marks button{width:44px;height:44px}}.results{display:grid;gap:20px}.results-hero{padding:36px 32px;display:grid;grid-template-columns:auto minmax(0,1fr);gap:32px;align-items:center}.results-hero .lines{display:grid;gap:8px}.results-hero .lines p{color:var(--ink-2);max-width:52ch}.result-rows{display:grid;gap:0;padding:6px 0}.result-row{display:grid;grid-template-columns:minmax(0,1fr) 140px 56px 18px;gap:16px;align-items:center;width:100%;padding:12px 22px;border:0;background:transparent;color:inherit;font:inherit;text-align:left;cursor:pointer;transition:background .15s var(--ease)}.result-row:hover{background:var(--bg-2)}.result-row[aria-pressed=true]{background:var(--accent-soft);box-shadow:inset 3px 0 0 var(--accent)}.result-row-go{width:18px;height:18px;color:var(--muted);transform:rotate(-90deg)}.results-hint{margin:4px 4px -4px;font-size:13.5px}.review-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;margin-top:12px;scroll-margin-top:80px}.review-head h2{margin:0}.review-filter{justify-self:start;border:0;padding:7px 12px;font-size:14px;cursor:pointer;background:var(--accent-soft);color:var(--accent-text)}.review-filter svg{width:14px;height:14px}.result-row+.result-row{border-top:1px solid var(--line)}.result-row .name{font-weight:500}.result-row .name small{display:block;font-size:12.5px;color:var(--muted);font-weight:400}.result-row .score{text-align:right;font-variant-numeric:tabular-nums;font-weight:600}@media(max-width:640px){.results-hero{grid-template-columns:1fr;justify-items:center;text-align:center;padding:28px 20px}.result-row{grid-template-columns:minmax(0,1fr) 70px 44px 16px;gap:12px;padding:12px 16px}}.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px}.page-head p{color:var(--muted);margin-top:8px;max-width:56ch}.overview{display:grid;grid-template-columns:auto minmax(0,1fr);gap:32px;align-items:center;padding:28px 32px;margin-bottom:20px}.overview-figures{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.overview-figures strong{display:block;font-family:var(--font-display);font-size:28px;font-weight:500;letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1.1}.overview-figures span{font-size:13px;color:var(--muted)}.chapters-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.chapter-card{padding:22px;display:grid;gap:16px;align-content:start}.chapter-card header{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.chapter-card header span{font-size:12.5px;color:var(--muted)}.chapter-card .pct{font-family:var(--font-display);font-size:26px;font-weight:500;font-variant-numeric:tabular-nums;line-height:1}.sub-rows{display:grid;gap:12px}.sub-row{display:grid;gap:6px}.sub-row .row{display:flex;justify-content:space-between;gap:10px;font-size:13.5px}.sub-row .row span:last-child{color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}.sub-row.locked{opacity:.45}.history{margin-top:28px}.history h2{margin-bottom:14px}.history-list{overflow:hidden}.history-row{display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:18px;align-items:center;padding:14px 22px;text-decoration:none;color:inherit;transition:background .15s var(--ease)}.history-row:hover{background:var(--surface-2)}.history-row+.history-row{border-top:1px solid var(--line)}.history-row small{display:block;color:var(--muted);font-size:13px}.history-row svg{width:18px;height:18px;color:var(--faint)}@media(max-width:760px){.overview{grid-template-columns:1fr;justify-items:center;padding:24px 20px}.overview-figures{grid-template-columns:repeat(2,minmax(0,1fr));width:100%;text-align:center}.chapters-grid{grid-template-columns:1fr}.history-row{padding:14px 16px}}.settings-page{max-width:720px}.settings-list{display:grid;padding:6px}.settings-row{display:flex;align-items:center;gap:14px;padding:14px;border-radius:14px;color:inherit;text-decoration:none;transition:background .15s ease}.settings-row+.settings-row{border-top:1px solid color-mix(in srgb,var(--line) 60%,transparent)}.settings-row:hover{background:var(--bg-2)}.settings-row>svg{flex:none;width:18px;height:18px;color:var(--muted)}.settings-icon{flex:none;width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:var(--blue-soft);color:var(--blue)}.settings-icon svg{width:19px;height:19px}.settings-text{flex:1;min-width:0;display:grid;gap:2px}.settings-text strong{font-size:16px}.settings-text small{font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.settings-row.needs .settings-text small{color:var(--weak)}.settings-panel{padding:24px;display:grid;gap:18px}.settings-panel>p{margin:0;color:var(--muted);font-size:15px}.danger{color:var(--weak)}.confirm{display:grid;gap:12px;padding:16px;border-radius:14px;background:var(--warm-soft);color:var(--ink);animation:fade .2s var(--ease)}.confirm .row{display:flex;gap:8px;flex-wrap:wrap}.btn-danger{background:var(--weak);color:#fff}.lightbox{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:#12110edb;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);overflow:auto;padding:calc(64px + env(safe-area-inset-top,0px)) 16px calc(32px + env(safe-area-inset-bottom,0px));animation:fade .2s var(--ease)}.lightbox-inner{margin:0 auto;width:max(100%,900px);max-width:1300px;background:#fff;border-radius:12px;padding:20px;box-shadow:var(--shadow-lg)}.lightbox-inner img{width:100%}.lightbox-close{position:fixed;top:calc(14px + env(safe-area-inset-top,0px));right:16px;background:#ffffff1f;border-color:#fff3;color:#fff}.lightbox-close:hover{background:#ffffff38;color:#fff}.toast{position:fixed;left:50%;bottom:calc(28px + env(safe-area-inset-bottom,0px));z-index:90;transform:translate(-50%);display:flex;align-items:center;gap:10px;padding:12px 18px;border-radius:999px;background:var(--ink);color:var(--bg);font-weight:500;font-size:14px;box-shadow:var(--shadow-lg);animation:rise .35s var(--ease)}.toast svg{width:18px;height:18px}@media(max-width:760px){.toast{bottom:calc(92px + env(safe-area-inset-bottom,0px))}}.update-toast{padding:6px 6px 6px 18px;max-width:calc(100vw - 24px);width:max-content}.update-toast>span{min-width:0}.update-go{border:0;border-radius:999px;padding:8px 14px;background:var(--accent);color:var(--accent-ink);font:inherit;font-weight:600}.update-go:disabled{opacity:.7}.update-toast .spin{animation:spin .9s linear infinite}@media(prefers-reduced-motion:reduce){.update-toast .spin{animation:none}}.update-later{display:grid;place-items:center;width:34px;height:34px;border:0;border-radius:999px;background:transparent;color:inherit;opacity:.7}.print-brand{display:none}@media print{@page{margin:14mm;@bottom-left{content:"paperstreak.com · Questions © Cambridge International";font:8.5pt Helvetica,Arial,sans-serif;color:#8a8f9c}@bottom-right{content:counter(page);font:8.5pt Helvetica,Arial,sans-serif;color:#8a8f9c}}.print-brand{display:flex;align-items:center;gap:8px;margin-bottom:8mm;padding-bottom:3mm;border-bottom:.6mm solid #2340d0;color:#2340d0;font-size:18px}.print-brand .logo{width:24px;height:24px}.print-site{margin-left:auto;color:#6a6f7c;font-size:12px}:root{--bg: #fff;--surface: #fff;--line: #ddd}body{background:#fff}.topbar,.tabbar,.paper-head,.no-print,.mark-row,.ms,.ms-toggle,.finish,.item-topics,.zoom-hint,.paper-tools,.paper-intro .how,.answer-bar{display:none!important}main{padding:0;max-width:none}.card{box-shadow:none;border:0}.item-head{break-after:avoid-page}.part{break-inside:avoid-page}.item-head{padding:0 0 8px;border-bottom:1px solid #ccc}.item-body{padding:10px 0 0}.sheet{border:0;padding:0}.part+.part{border-top:0;padding-top:0}.part{padding-bottom:46mm}.items{gap:10mm}}.navdots{display:flex;flex-wrap:wrap;gap:4px}.navdot{width:12px;height:12px;padding:0;border-radius:4px;border:1.5px solid var(--line-2);background:transparent;transition:transform .15s var(--ease),background .2s var(--ease)}.navdot:hover{transform:scale(1.3);border-color:var(--ink-2)}.navdot.full{background:var(--good);border-color:var(--good)}.navdot.some{background:var(--mid);border-color:var(--mid)}.navdot.none{background:var(--weak);border-color:var(--weak)}.navtally{display:flex;flex-wrap:wrap;align-items:center;gap:6px}.tally{display:inline-flex;align-items:center;gap:5px;padding:2px 8px 2px 5px;border-radius:999px;border:1px solid var(--line);background:transparent;color:var(--ink-2);font:inherit;font-size:12.5px;font-weight:600}button.tally{cursor:pointer}button.tally:hover{border-color:var(--ink-2)}.tally .navdot{width:10px;height:10px;border-radius:3px}.paper-head .meter{max-width:300px}.settings-panel .sessions{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}.onboard{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr)}.onboard-inner,.onboard-foot-inner{max-width:700px}.onboard-body .sessions{grid-template-columns:repeat(3,minmax(0,1fr))}.optional{margin-left:6px;font-size:11px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--faint)}@media(max-width:900px){.onboard,.onboard-body .sessions{grid-template-columns:1fr}}.onboard-body.page-enter{animation:step-in .45s var(--ease) backwards}@keyframes step-in{0%{opacity:0;transform:translate(18px)}}@keyframes pop{0%{transform:scale(1)}40%{transform:scale(1.06)}to{transform:scale(1)}}.segmented button[aria-pressed=true],.time-cards button[aria-checked=true],.session[aria-checked=true],.marks button[aria-pressed=true]{animation:pop .28s var(--ease)}.check:checked{animation:pop .25s var(--ease)}.btn-primary:not(:disabled):hover,.btn-ghost:hover{transform:translateY(-1px)}.btn:active,.btn-primary:not(:disabled):active{transform:translateY(0) scale(.97)}.time-cards button,.session,.segmented button{transition:transform .15s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease)}.time-cards button:hover,.session:hover{transform:translateY(-2px)}.chapter-card,.history-row{transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .15s var(--ease)}.chapter-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.chapter{transition:border-color .2s var(--ease),box-shadow .25s var(--ease)}.chapter:hover{box-shadow:var(--shadow-sm)}.week .day{animation:rise .4s var(--ease) backwards}.week .tip-anchor:nth-child(2) .day{animation-delay:30ms}.week .tip-anchor:nth-child(3) .day{animation-delay:60ms}.week .tip-anchor:nth-child(4) .day{animation-delay:90ms}.week .tip-anchor:nth-child(5) .day{animation-delay:.12s}.week .tip-anchor:nth-child(6) .day{animation-delay:.15s}.week .tip-anchor:nth-child(7) .day{animation-delay:.18s}.week .today .dot{animation:pulse 2.4s ease-in-out infinite}@keyframes pulse{0%,to{box-shadow:inset 0 0 0 2px var(--accent),0 0 color-mix(in srgb,var(--accent) 35%,transparent)}50%{box-shadow:inset 0 0 0 2px var(--accent),0 0 0 5px color-mix(in srgb,var(--accent) 0%,transparent)}}.stats .stat{animation:rise .45s var(--ease) backwards}.stats .stat:nth-child(2){animation-delay:60ms}.stats .stat:nth-child(3){animation-delay:.12s}.navdot.full,.navdot.some,.navdot.none{animation:pop .3s var(--ease)}.yesterday{margin-left:14px;padding-left:14px;border-left:1px solid var(--line-2)}.yesterday strong{color:var(--ink);font-weight:600}.focus-pick{display:grid;gap:10px;margin:-6px 0 22px}.focus-chips{display:flex;flex-wrap:wrap;gap:6px}.focus-chips button{padding:7px 13px;border-radius:999px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink-2);font-size:13.5px;font-weight:500;transition:transform .15s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease)}.focus-chips button:hover{border-color:var(--ink-2);color:var(--ink)}.focus-chips button[aria-pressed=true]{background:var(--accent-soft);border-color:var(--accent);color:var(--accent-text);animation:pop .28s var(--ease)}.goal{display:flex;align-items:center;gap:8px;margin-top:16px;font-size:14px;color:var(--muted)}.goal svg{width:17px;height:17px;color:var(--gold)}.coming ul{list-style:none;margin:0;padding:0;display:grid;gap:12px}.coming li{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--ink-2)}.coming strong{color:var(--ink)}.coming .ic{width:32px;height:32px;flex:none;border-radius:10px;display:grid;place-items:center}.coming .ic svg{width:16px;height:16px}.coming .ic.retry{background:var(--warm-soft);color:var(--warm)}.coming .ic.review{background:var(--blue-soft);color:var(--blue)}@media(max-width:560px){.yesterday{display:block;margin:4px 0 0;padding:0;border:0}}.focus-mode .topbar,.focus-mode .tabbar{display:none}.focus-mode .paper-head{top:env(safe-area-inset-top,0px)}@media(max-width:900px){.focus-mode .paper-head{top:env(safe-area-inset-top,0px)}.focus-mode main{padding-bottom:calc(40px + env(safe-area-inset-bottom,0px))}}.answer-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:14px clamp(10px,2.2vw,22px);border-top:1px dashed var(--line-2);background:var(--surface-2);font-size:14px;color:var(--muted)}.answer-bar .btn{min-height:42px;font-size:14.5px}.pace{color:var(--good);font-weight:600}.pace.behind{color:var(--warm)}.formula-btn{min-height:40px;padding:0 14px;font-size:14px}@media(max-width:760px){.formula-btn span{display:none}.formula-btn{width:40px;padding:0}}.focus-pick{max-width:420px}.landing{min-height:100dvh;background:var(--bg)}.mono{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.01em}mark{color:inherit;background:var(--highlight);padding:0 .1em;border-radius:3px;box-decoration-break:clone;-webkit-box-decoration-break:clone}:root[data-theme=dark] mark{color:#12151d}@media(prefers-color-scheme:dark){:root:not([data-theme=light]) mark{color:#12151d}}.l-kicker{font-family:var(--font-mono);font-size:12.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--accent-text)}.l-nav{max-width:1160px;margin:0 auto;padding:calc(18px + env(safe-area-inset-top,0px)) 24px 18px;display:flex;align-items:center;justify-content:space-between;gap:12px}.l-nav-right{display:flex;align-items:center;gap:10px}.l-hero{max-width:1160px;margin:0 auto;padding:40px 24px 80px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center}.l-hero h1{font-size:clamp(38px,5.2vw,64px);line-height:1.02;letter-spacing:-.04em;font-weight:700;margin:16px 0 22px;animation:rise .6s var(--ease) backwards}.l-lede{font-size:18px;color:var(--ink-2);max-width:50ch;animation:rise .6s .08s var(--ease) backwards}.l-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:30px;animation:rise .6s .16s var(--ease) backwards}.l-small{margin-top:14px;font-size:13.5px;color:var(--muted)}.l-hero-visual{animation:rise .7s .2s var(--ease) backwards}.l-grid{position:relative;padding:34px 28px 64px;border-radius:var(--radius-lg);border:1px solid var(--line);background-color:var(--surface);background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:22px 22px;background-position:-1px -1px}.l-sheet{position:relative;background:#fff;border:1px solid #e4e1d9;border-radius:10px;box-shadow:var(--shadow);padding:14px 16px 18px;rotate:-1.2deg}.l-sheet-head{display:flex;justify-content:space-between;gap:10px;padding-bottom:10px;margin-bottom:8px;border-bottom:1px dashed #d3cfc4;color:#12151d}.l-sheet .muted{color:#6a6f7c}.l-sheet img,.l-slip img{width:100%;height:auto}.l-slip{position:relative;margin:-6px 18px 0 46px;background:#f3f5fe;border:1px solid #dfe4fb;border-radius:10px;padding:10px 12px 12px;box-shadow:var(--shadow);rotate:1.4deg}.l-slip-label{display:block;margin-bottom:6px;color:#2340d0;font-weight:600;text-transform:uppercase;font-size:10.5px;letter-spacing:.06em}.l-slip-img{max-height:120px;overflow:hidden;border-radius:4px;background:#fff}.l-pen{position:absolute;font-family:var(--font-hand);font-weight:700;color:var(--good);line-height:1;pointer-events:none}.l-pen-score{right:22px;top:6px;font-size:34px;rotate:-8deg}.l-pen-note{left:28px;bottom:16px;font-size:22px;color:var(--warm);rotate:-2deg}.l-section{max-width:1160px;margin:0 auto;padding:72px 24px;border-top:1px solid var(--line)}.l-tight{border-top:0;padding-top:0}.l-section>h2{margin:10px 0 36px;font-size:clamp(28px,3.4vw,42px);font-weight:700;max-width:22ch}.l-problems{list-style:none;margin:0;padding:0;display:grid}.l-problems li{display:grid;grid-template-columns:64px minmax(0,1fr) minmax(0,1fr);gap:28px;align-items:start;padding:28px 0;border-top:1px solid var(--line)}.l-problems li:last-child{border-bottom:1px solid var(--line)}.l-num{font-size:15px;font-weight:600;color:var(--faint);padding-top:5px}.l-q h3{font-size:23px;font-weight:650;margin-bottom:8px}.l-q p{color:var(--ink-2)}.l-a{display:flex;gap:12px;padding:16px 18px;border-radius:var(--radius);background:var(--accent-soft);transition:transform .25s var(--ease)}.l-problems li:hover .l-a{transform:translate(4px)}.l-a svg{width:20px;height:20px;flex:none;margin-top:2px;color:var(--good);stroke-width:2.6}.l-a p{color:var(--ink-2)}.l-a strong{color:var(--ink)}.l-a a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}.l-cover{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:18px}.l-cover-box{border:2px solid var(--ink);border-radius:4px;padding:22px 24px 24px;background:var(--surface)}.l-cover-title{font-weight:600;font-size:13px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px}.l-cover-box ol,.l-cover-box ul{margin:0;padding-left:20px;display:grid;gap:10px;color:var(--ink-2)}.l-cover-box li::marker{font-family:var(--font-mono);font-weight:600;color:var(--ink)}.l-facts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:2px solid var(--ink);border-bottom:1px solid var(--line)}.l-facts>div{display:grid;gap:6px;padding:24px 20px 24px 0}.l-facts>div+div{padding-left:20px;border-left:1px solid var(--line)}.l-facts strong{font-family:var(--font-display);font-size:clamp(34px,4vw,48px);font-weight:700;line-height:1;letter-spacing:-.04em}.l-facts span{font-size:14px;color:var(--muted)}.l-two{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px}.l-two h2{margin:10px 0 22px;font-size:clamp(24px,2.8vw,32px);font-weight:700}.l-level{margin:22px 0 10px;font-size:13px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}.l-subjects{list-style:none;margin:0;padding:0;display:grid;gap:10px}.l-subjects li{display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line)}.l-subjects li>span:last-child{display:grid}.l-subjects li>span:last-child>span{font-size:13.5px;color:var(--muted)}.l-subjects li:not(.on) .subject-icon{background:var(--bg-2);color:var(--muted)}.l-subjects li.on .subject-icon{background:var(--accent-soft);color:var(--accent-text)}.l-faq{display:grid;gap:10px}.l-faq details{border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);padding:0 18px;transition:box-shadow .2s var(--ease)}.l-faq details[open]{box-shadow:var(--shadow-sm)}.l-faq summary{cursor:pointer;list-style:none;padding:16px 0;font-weight:600;display:flex;justify-content:space-between;gap:12px}.l-faq summary::-webkit-details-marker{display:none}.l-faq summary:after{content:"+";font-size:20px;line-height:1;color:var(--muted);transition:transform .2s var(--ease)}.l-faq details[open] summary:after{transform:rotate(45deg)}.l-faq details p{padding-bottom:16px;color:var(--ink-2);animation:fade .25s var(--ease)}.l-final{max-width:1160px;margin:24px auto 0;padding:72px 24px;display:grid;justify-items:center;gap:26px;text-align:center;background:#2340d0;color:#fff;border-radius:var(--radius-lg)}.l-final h2{font-size:clamp(30px,4.4vw,52px);font-weight:700;max-width:20ch}.l-final mark{color:#12151d}.l-final-btn{background:#fff;color:#12151d}.l-final-btn:hover{background:#ffd74a}.l-foot{max-width:1160px;margin:0 auto;padding:28px 24px calc(36px + env(safe-area-inset-bottom,0px));font-size:12.5px;color:var(--faint)}@media(max-width:900px){.l-hero,.l-two,.l-cover{grid-template-columns:1fr;gap:32px}.l-hero{padding-top:20px}.l-problems li{grid-template-columns:1fr;gap:12px}.l-facts{grid-template-columns:repeat(2,minmax(0,1fr))}.l-facts>div:nth-child(3){padding-left:0;border-left:0}.l-facts>div:nth-child(n+3){border-top:1px solid var(--line)}.l-section{padding:48px 20px}.l-final{margin:24px 16px 0;padding:56px 20px}}@media(max-width:520px){.l-actions{flex-direction:column;align-items:stretch}.l-actions .btn{width:100%}.l-grid{padding:22px 14px 54px}.l-slip{margin:-4px 4px 0 22px}.l-pen-score{font-size:28px;right:12px;top:0}.l-pen-note{left:16px;font-size:19px}.l-nav .btn-primary{min-height:40px;padding:0 16px}}.wordmark{gap:9px;font-family:var(--font-display);font-size:21px;font-weight:700;letter-spacing:-.035em}.brand b{font-weight:inherit;color:var(--accent-text)}.onboard-top{display:flex;justify-content:flex-end;margin:-16px 0 16px}.tip-anchor{display:inline-flex}.tip-text{cursor:help;text-decoration:underline dotted var(--line-2);text-underline-offset:4px}.tip-bubble{position:fixed;z-index:200;max-width:280px;width:max-content;padding:9px 12px;border-radius:10px;background:#12151dc7;backdrop-filter:blur(12px) saturate(1.4);-webkit-backdrop-filter:blur(12px) saturate(1.4);border:1px solid rgb(255 255 255 / .08);color:#f2f3f8;font-size:13px;font-weight:500;line-height:1.45;text-align:left;box-shadow:0 10px 30px -10px #00000073;pointer-events:none;transform:translate(-50%,-100%);animation:tip-in .16s var(--ease)}.tip-bubble.below{transform:translate(-50%);animation-name:tip-in-below}@keyframes tip-in{0%{opacity:0;transform:translate(-50%,calc(-100% + 4px))}}@keyframes tip-in-below{0%{opacity:0;transform:translate(-50%,-4px)}}:root[data-theme=dark] .tip-bubble{background:#2e3444c7;border-color:#ffffff1f}@media(prefers-color-scheme:dark){:root:not([data-theme=light]) .tip-bubble{background:#2e3444c7;border-color:#ffffff1f}}.reason-dot,.chip[tabindex]{cursor:help}.tip-anchor.tip-block{display:flex}.switcher{position:relative}.switcher .subject-chip{cursor:pointer;font:inherit;font-size:14px;font-weight:600}.subject-chip-short{display:none}.subject-chip-caret{width:15px;height:15px;color:var(--muted);margin-left:-2px;transition:transform .2s var(--ease)}.subject-chip[aria-expanded=true] .subject-chip-caret{transform:rotate(180deg)}.switcher-menu{position:absolute;top:calc(100% + 8px);left:0;z-index:40;width:260px;padding:10px;display:grid;gap:2px;border-radius:var(--radius);border:1px solid var(--line);background:color-mix(in srgb,var(--surface) 94%,transparent);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:var(--shadow-lg);animation:menu-in .18s var(--ease);transform-origin:top left}@keyframes menu-in{0%{opacity:0;transform:translateY(-4px) scale(.98)}}.switcher-menu .eyebrow{padding:4px 8px 6px;font-size:11px}.switcher-item{display:flex;align-items:center;gap:10px;width:100%;padding:7px 8px;border:0;border-radius:10px;background:transparent;color:var(--ink);text-align:left;font:inherit;cursor:pointer}.switcher-item:hover,.switcher-item:focus-visible{background:var(--bg-2)}.switcher-item .subject-icon{width:32px;height:32px;border-radius:10px}.switcher-item .subject-icon svg{width:18px;height:18px}.switcher-item .name{font-weight:600;font-size:14.5px}.switcher-item .detail{font-size:12px;color:var(--muted)}.switcher-check{width:18px;height:18px;margin-left:auto;color:var(--accent-text)}.switcher-add{display:flex;align-items:center;gap:10px;margin-top:4px;padding:10px 8px 6px;border-top:1px solid var(--line);color:var(--accent-text);font-weight:600;font-size:14px;text-decoration:none}.switcher-add svg{width:18px;height:18px;margin:0 7px}@media(max-width:560px){.switcher .subject-chip{padding:3px 10px 3px 3px}.subject-chip-short{display:inline}}.subject-dot{width:24px;height:24px;flex:none;border-radius:50%;display:inline-grid;place-items:center;background:var(--accent-soft);color:var(--accent-text)}.subject-dot svg{width:14px;height:14px}.subject-dot.subject-9702,.subject-dot.subject-9702-P4,.subject-dot.subject-5054{background:var(--blue-soft);color:var(--blue)}.subject-dot.subject-9701,.subject-dot.subject-5070{background:var(--plum-soft);color:var(--plum)}.subject-dot.subject-9700,.subject-dot.subject-5090{background:color-mix(in srgb,var(--good) 16%,var(--surface));color:var(--good)}.subject-dot.subject-9618,.subject-dot.subject-2210{background:var(--gold-soft);color:var(--gold)}.level-tabs{display:flex;flex-wrap:nowrap;margin-bottom:4px}.level-tabs button{flex:1 1 0;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 10px}.level-tabs button[aria-pressed=true] .tab-count.on{background:color-mix(in srgb,var(--bg) 25%,transparent);color:var(--bg)}.subject-tabs button{flex:none;display:inline-flex;align-items:center;gap:8px;padding:0 14px 0 8px}.tab-count{min-width:22px;height:22px;padding:0 6px;border-radius:999px;display:inline-grid;place-items:center;font-size:12px;background:var(--bg-2);color:var(--muted)}.tab-count.on{background:var(--good);color:#fff}.subject-tabs button[aria-pressed=true] .tab-count:not(.on){background:color-mix(in srgb,var(--bg) 25%,transparent);color:var(--bg)}.chapters-loading,.years-loading{min-height:240px;border-radius:var(--radius-lg);background:linear-gradient(90deg,var(--bg-2),var(--surface-2),var(--bg-2));background-size:200% 100%;animation:shimmer 1.4s linear infinite}@keyframes shimmer{to{background-position:-200% 0}}.splash-inline{min-height:50vh}.guest-nav{display:flex;align-items:center;gap:8px;margin-left:auto}.guest-nav .btn{min-height:40px;padding:0 16px;font-size:14px}.guest-nav .short{display:none}@media(max-width:560px){.guest-nav .long{display:none}.guest-nav .short{display:inline}.guest-nav .btn-primary{padding:0 18px}}.google-mark{width:18px;height:18px;flex:none}.account{display:grid;gap:14px;justify-items:start}.account p{margin:0}.account-user{display:flex;align-items:center;gap:12px}.account-user img,.account-initial{width:40px;height:40px;border-radius:50%;flex:none}.account-initial{display:grid;place-items:center;background:var(--accent-soft);color:var(--accent-text);font-weight:700;text-transform:uppercase}.account-user span{display:grid}.account-user small{color:var(--muted);font-size:13px}.account-saved{display:flex;align-items:center;gap:8px;color:var(--good);font-weight:600;font-size:14px}.account-saved svg{width:18px;height:18px}.onboard-signin{display:flex;flex-wrap:wrap;align-items:center;gap:4px 10px;margin:0;font-size:14px}.onboard-signin .btn{min-height:36px;padding:0 12px;font-size:14px}.finder{padding:22px;display:grid;gap:12px;margin-bottom:36px}.finder-label{font-family:var(--font-display);font-size:19px;font-weight:600;letter-spacing:-.01em}.finder-box{position:relative}.finder-box>svg{position:absolute;left:16px;top:50%;width:20px;height:20px;transform:translateY(-50%);color:var(--muted);pointer-events:none}.finder-box .input{min-height:54px;padding:0 52px 0 46px;font-size:17px;border-radius:14px}.finder-box .input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 16%,transparent)}.finder-clear{position:absolute;right:8px;top:50%;transform:translateY(-50%);width:36px;height:36px;border:0;background:transparent}.finder-clear svg{width:18px;height:18px}.finder-examples{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px}.finder-examples .chip{cursor:pointer;font-family:var(--font-mono);font-size:12.5px;padding:6px 12px;border:0;transition:box-shadow .2s var(--ease),color .2s var(--ease)}.finder-examples .chip:hover{color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink-2)}.finder-results{display:grid;gap:4px;animation:fade .2s var(--ease)}.finder-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:14px;padding:12px 14px;border-radius:12px;color:inherit;text-decoration:none;transition:background .15s var(--ease)}.finder-row:hover,.finder-row.first{background:var(--bg-2)}.finder-row .subject-dot{width:34px;height:34px}.finder-row .subject-dot svg{width:18px;height:18px}.finder-row>svg{width:18px;height:18px;color:var(--muted)}.finder-text{display:grid;min-width:0}.finder-text small{color:var(--muted);font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.finder-text .finder-note{color:var(--warm)}.finder-hint{margin:4px 2px;font-size:14px}.years-head{display:grid;gap:16px;margin-bottom:16px}.years-head h2{margin:0}.years-key{margin:-8px 0 0;font-size:14px;max-width:62ch}.years-key .num{font-weight:700;color:var(--ink)}.papers-subjects{margin-bottom:20px}.paper-ways{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:28px}.paper-way{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:start;gap:14px;padding:18px;color:inherit;font:inherit;text-align:left;text-decoration:none;cursor:pointer;transition:border-color .15s var(--ease),transform .15s var(--ease)}.paper-way:hover{border-color:var(--accent);transform:translateY(-1px)}.paper-way-icon{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:var(--blue-soft);color:var(--blue)}.paper-way-icon svg{width:20px;height:20px}.paper-way-text{display:grid;gap:4px}.paper-way-text strong{font-family:var(--font-display);font-size:17px}.paper-way-text span{color:var(--muted);font-size:14px;line-height:1.4}.paper-way>svg{align-self:center;width:18px;height:18px;color:var(--muted)}@media(max-width:760px){.paper-ways{grid-template-columns:1fr;gap:8px}.paper-way{align-items:center;padding:14px 16px}}.finder-intro{margin:-4px 0 0;font-size:14px}.past-how{display:flex;align-items:flex-start;gap:10px;margin:-8px 0 24px;padding:12px 16px;border-radius:12px;background:var(--accent-soft);color:var(--ink-2);font-size:14.5px;line-height:1.45}.past-how svg{flex:none;width:18px;height:18px;margin-top:1px;color:var(--accent-text)}.past-questions-head{margin:8px 0 14px;scroll-margin-top:80px}.past-questions-head h2{margin:0 0 4px}.past-questions-head p{margin:0;font-size:14px}#years,#find{scroll-margin-top:80px}.subject-groups{display:grid;gap:14px;min-width:0}.subject-group{display:grid;gap:8px;min-width:0}.subject-group .subject-dot{flex-shrink:0}.years{display:grid;gap:14px}.year{display:grid;grid-template-columns:90px minmax(0,1fr);align-items:start;gap:16px;padding:18px 22px}.year h3{margin:6px 0 0;font-family:var(--font-display);font-size:26px;font-weight:600;letter-spacing:-.02em}.year-rows{display:grid}.year-row{display:grid;grid-template-columns:170px minmax(0,1fr);align-items:center;gap:12px;padding:8px 0}.year-row+.year-row{border-top:1px dashed var(--line)}.series{display:grid;font-weight:600;font-size:14.5px}.series small{color:var(--muted);font-weight:500;font-size:12px}.variants{display:flex;flex-wrap:wrap;gap:12px 28px}.variant-group{display:grid;gap:6px}.variant-label{display:flex;align-items:baseline;gap:6px;font-size:12.5px;font-weight:600;color:var(--ink-2)}.variant-label small{color:var(--muted);font-size:12.5px;font-weight:500}.variant-chips{display:inline-flex;flex-wrap:wrap;gap:6px}.variant{position:relative;display:inline-grid;place-items:center;min-width:48px;height:40px;padding:0 12px;border-radius:10px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);font-weight:600;font-size:15px;text-decoration:none;transition:transform .15s var(--ease),border-color .2s var(--ease),background .2s var(--ease)}.variant:hover{transform:translateY(-1px);border-color:var(--accent);background:var(--accent-soft);color:var(--accent-text)}.variant.done{border-color:var(--line);background:var(--surface-2)}.variant-dot{position:absolute;top:-3px;right:-3px;width:10px;height:10px;border-radius:50%;border:2px solid var(--surface)}@media(max-width:760px){.finder{padding:16px}.year{grid-template-columns:1fr;gap:4px;padding:16px}.year h3{margin:0;font-size:22px}.year-row{grid-template-columns:1fr;gap:8px;padding:10px 0}}.crumb{display:inline-flex;align-items:center;gap:6px;margin-bottom:16px;color:var(--muted);font-size:14px;font-weight:600;text-decoration:none}.crumb:hover{color:var(--ink)}.crumb svg{width:16px;height:16px}.past-head{display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;gap:18px 28px;margin-bottom:24px}.past-head h1{margin:6px 0 4px}.past-head p{margin:0}.past-last{display:inline-flex;align-items:center;gap:6px;margin-top:10px;color:var(--good);font-weight:600;font-size:14px;text-decoration:none}.past-last svg{width:16px;height:16px}.past-actions{display:grid;gap:10px;justify-items:end}.past-actions .row{display:flex;flex-wrap:wrap;gap:8px}@media(max-width:760px){.past-actions{justify-items:stretch;width:100%}.past-actions .row>.btn{flex:1 1 140px}}.past-note{display:flex;align-items:center;gap:8px;margin:0 0 16px;padding:10px 14px;border-radius:12px;background:var(--bg-2);color:var(--ink-2);font-size:14px}.past-note svg{width:16px;height:16px;flex:none}.past-q .item-title a{color:inherit;text-decoration:none}.past-q .item-title a:hover{color:var(--accent-text);text-decoration:underline;text-underline-offset:3px}.q-nav{display:flex;justify-content:space-between;gap:12px;margin:20px 0}.past-cta{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px 24px;padding:24px;margin-top:8px;background:var(--highlight-soft);border-color:color-mix(in srgb,var(--highlight) 60%,var(--line))}.past-cta h3{margin:0 0 6px}.past-cta p{margin:0;max-width:52ch}.credit{margin:28px 0 0;font-size:13px;text-align:center}.results-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.paper-head .title{flex:1}.paper-head .title .short,.paper-progress{display:none}@media(max-width:760px){.paper-head{gap:10px}.paper-head .title .long,.print-btn{display:none}.paper-head .title .short{display:inline}.paper-progress{display:block;position:absolute;left:0;right:0;bottom:-1px;height:2px}.paper-progress span{display:block;height:100%;background:var(--accent);border-radius:0 2px 2px 0;transition:width .5s var(--ease)}.item-topics{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;-webkit-mask-image:linear-gradient(90deg,#000 88%,transparent);mask-image:linear-gradient(90deg,#000 88%,transparent)}.item-topics::-webkit-scrollbar{display:none}.switcher-menu{position:fixed;top:calc(60px + env(safe-area-inset-top,0px));left:16px;right:16px;width:auto}}.ms .your-marks{display:flex;margin:0;padding:14px clamp(10px,2.2vw,22px) 18px;border-top:1px dashed #dfe4fb}.ms .your-marks .label{flex-basis:100%;color:#3b4150}.marked-chip{display:inline-flex;align-items:center;gap:6px;margin-left:auto;padding:6px 12px;border-radius:999px;font-weight:700;font-size:14px;font-variant-numeric:tabular-nums;animation:pop .28s var(--ease)}.marked-chip svg{width:16px;height:16px}.marked-chip.full{background:color-mix(in srgb,var(--good) 14%,#fff);color:var(--good)}.marked-chip.some{background:color-mix(in srgb,var(--mid) 16%,#fff);color:var(--mid)}.marked-chip.none{background:color-mix(in srgb,var(--weak) 12%,#fff);color:var(--weak)}@media(max-width:760px){.results-actions{justify-content:center}}@media(max-width:560px){.l-signin,.guest-nav .guest-signin{padding:0 10px}.l-papers-link{width:40px;min-height:40px;padding:0}.l-papers-link span{display:none}}.l-papers-link svg{width:18px;height:18px}@media(max-width:420px){.l-nav .theme-toggle{display:none}.l-nav-right{gap:6px}}.signin-page{display:grid;justify-items:center;padding:32px 0 64px}.signin-card{width:100%;max-width:420px;display:grid;gap:14px;padding:28px 24px}.signin-card h1{margin:0;font-family:var(--font-display);font-size:30px}.signin-card>p{margin:0 0 4px}.signin-wait{justify-items:center;text-align:center;padding-block:36px}.signin-spinner{width:28px;height:28px;border-radius:999px;border:3px solid var(--line);border-top-color:var(--accent);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.signin-note{display:grid;gap:10px;margin:0;padding:12px 14px;border-radius:12px;background:var(--bg-2);font-size:14px;color:var(--ink-2)}.signin-note p{margin:0}.signin-note .btn{justify-self:start}.signin-google{width:100%;justify-content:center}.signin-or{display:flex;align-items:center;gap:12px;color:var(--faint);font-size:13px}.signin-or:before,.signin-or:after{content:"";flex:1;height:1px;background:var(--line)}.email-form{display:grid;gap:14px}.email-form .btn-primary{width:100%;justify-content:center}.email-form small{font-size:13px}.form-error{margin:0;padding:10px 12px;border-radius:var(--radius-sm);background:var(--warm-soft);color:var(--warm);font-size:14px;font-weight:600}.signin-switch{margin:0;text-align:center;font-size:14px}.link-button{padding:0;border:0;background:none;color:var(--accent-text);font:inherit;font-weight:600;cursor:pointer}.link-button:hover{text-decoration:underline}.select{position:relative}.select-button{display:flex;align-items:center;gap:10px;width:100%;min-height:46px;padding:0 14px;border-radius:12px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);font:inherit;font-size:14.5px;text-align:left;cursor:pointer;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}.select-button:hover{border-color:var(--faint)}.select-button:focus-visible,.select.open .select-button{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 18%,transparent)}.select-value{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.select-caret{width:16px;height:16px;flex:none;color:var(--muted);transition:transform .2s var(--ease)}.select.open .select-caret{transform:rotate(180deg)}.select-menu{position:absolute;top:calc(100% + 6px);left:0;right:0;z-index:40;max-height:min(320px,50vh);overflow-y:auto;margin:0;padding:6px;list-style:none;border-radius:var(--radius);border:1px solid var(--line);background:color-mix(in srgb,var(--surface) 96%,transparent);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:var(--shadow-lg);animation:menu-in .18s var(--ease);transform-origin:top center}.select-option{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;font-size:14.5px;cursor:pointer}.select-option.active{background:var(--bg-2)}.select-option[aria-selected=true]{color:var(--accent-text);font-weight:600}.select-option-text{flex:1;min-width:0;display:grid}.select-option-text small{color:var(--muted);font-size:12.5px;font-weight:400}.select-check{width:16px;height:16px;flex:none}.feedback-page{display:grid;justify-items:center;padding:24px 0 64px}.feedback-card{width:100%;max-width:560px;display:grid;gap:16px;padding:28px 24px}.feedback-card h1{margin:0;font-family:var(--font-display);font-size:30px}.feedback-card>p{margin:0}.feedback-about{display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:var(--radius-sm);background:var(--accent-soft);color:var(--accent-text);font-size:14px}.feedback-about svg{width:16px;height:16px;flex:none}.feedback-kinds{flex-wrap:wrap}.textarea{min-height:140px;padding:12px 14px;resize:vertical;font:inherit;line-height:1.5}.feedback-card small{font-size:13px}.feedback-card .btn-primary{justify-self:start;min-width:140px;justify-content:center}.feedback-sent{justify-items:center;text-align:center}.sent-mark{display:grid;place-items:center;width:56px;height:56px;border-radius:50%;background:color-mix(in srgb,var(--good) 14%,transparent);color:var(--good)}.sent-mark svg{width:28px;height:28px}.form-ok{margin:0;padding:10px 12px;border-radius:var(--radius-sm);background:color-mix(in srgb,var(--good) 12%,transparent);color:var(--good);font-size:14px;font-weight:600}.credit a,.results-report a{color:var(--muted);text-decoration:underline;text-underline-offset:3px}.credit a:hover,.results-report a:hover{color:var(--ink)}.results-report{margin:4px 0 0;font-size:13.5px;text-align:center}.save-nudge{display:flex;align-items:center;gap:14px;padding:16px 18px;margin-bottom:20px;border-color:color-mix(in srgb,var(--accent) 30%,var(--line));background:color-mix(in srgb,var(--accent-soft) 55%,var(--surface));animation:menu-in .3s var(--ease)}.save-nudge-results{margin:16px 0 0}.save-nudge-icon{display:grid;place-items:center;width:40px;height:40px;flex:none;border-radius:12px;background:var(--surface);color:var(--accent-text)}.save-nudge-icon svg{width:20px;height:20px}.save-nudge-text{flex:1;min-width:0;display:grid;gap:2px;font-size:14px}.save-nudge-text span{color:var(--ink-2)}.save-nudge-actions{display:flex;gap:6px;flex:none}@media(max-width:640px){.save-nudge{flex-wrap:wrap}.save-nudge-text{flex-basis:calc(100% - 54px)}.save-nudge-actions{width:100%}.save-nudge-actions .btn-primary{flex:1;justify-content:center}}.admin-badge{padding:4px 10px;border-radius:999px;background:var(--bg-2);color:var(--muted);font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;margin-right:auto}.admin-page{display:grid;gap:20px;padding:24px 0 64px}.admin-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px}.admin-head h1{margin:0;font-family:var(--font-display);font-size:30px}.admin-head h2{margin:0}.admin-tiles{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.admin-tile{display:grid;gap:4px;padding:18px}.admin-tile-label{color:var(--muted);font-size:13px;font-weight:600}.admin-tile strong{font-family:var(--font-display);font-size:32px;line-height:1.1}.admin-tile-note{color:var(--muted);font-size:12.5px}.admin-card{display:grid;gap:14px;align-content:start;padding:22px}.admin-card h2{margin:0;font-size:17px}.admin-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}.admin-small{margin:0;font-size:13px}.admin-loading{height:220px;border-radius:var(--radius);background:linear-gradient(90deg,var(--bg-2),var(--surface-2),var(--bg-2));background-size:200% 100%;animation:shimmer 1.4s linear infinite}.admin-count{margin-left:8px;padding:2px 8px;border-radius:999px;background:var(--warm-soft);color:var(--warm);font-size:12.5px;vertical-align:middle}.day-bars-wrap{display:grid;gap:8px}.day-bars-readout{display:flex;flex-wrap:wrap;gap:4px 10px;margin:0;font-size:14px}.day-bars-readout span{color:var(--ink-2)}.day-bars{display:grid;gap:2px;height:160px;align-items:end;border-bottom:1px solid var(--line)}.day-bar{height:100%;display:flex;align-items:flex-end;padding:0;border:0;background:transparent;cursor:pointer}.day-bar span{display:block;width:100%;min-height:2px;border-radius:4px 4px 0 0;background:color-mix(in srgb,var(--accent) 55%,var(--surface));transition:background .15s var(--ease)}.day-bar.on span,.day-bar:hover span{background:var(--accent)}.day-bars-axis{display:flex;justify-content:space-between;color:var(--muted);font-size:12px}.rank-list{display:grid;gap:6px;margin:0;padding:0;list-style:none}.rank-list li{position:relative;display:flex;justify-content:space-between;gap:12px;padding:7px 10px;border-radius:8px;font-size:14px;overflow:hidden}.rank-label{position:relative;z-index:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.rank-label.mono{font-family:var(--font-mono);font-size:12.5px}.rank-count{position:relative;z-index:1;color:var(--ink-2);font-weight:600}.rank-bar{position:absolute;inset:0 auto 0 0;border-radius:8px;background:var(--accent-soft)}.admin-facts{display:grid;grid-template-columns:1fr auto;gap:8px 16px;margin:0;font-size:14px}.admin-facts dt{color:var(--ink-2)}.admin-facts dd{margin:0;font-weight:700;text-align:right}.fb-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}.fb-item{display:grid;gap:8px;padding:14px 16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-2)}.fb-item.done{opacity:.62}.fb-meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px 8px;font-size:13px}.fb-kind{font-weight:700}.fb-bug{background:var(--warm-soft);color:var(--warm)}.fb-idea{background:var(--accent-soft);color:var(--accent-text)}.fb-other{background:var(--bg-2);color:var(--ink-2)}.fb-message{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;font-size:15px}.fb-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px;font-size:13px}.fb-foot .btn{min-height:34px;padding:0 10px;font-size:13.5px}.admin-password .btn-primary{justify-self:start}@media(max-width:760px){.admin-tiles{grid-template-columns:repeat(2,minmax(0,1fr))}.admin-tile strong{font-size:26px}.admin-grid{grid-template-columns:minmax(0,1fr)}.admin-head .segmented{width:100%}.admin-head .segmented button{flex:1}}html,body{overflow-x:clip}@media(max-width:760px){.topbar-inner{gap:10px}.segmented.subject-tabs{flex-wrap:wrap}.segmented.subject-tabs button{flex:1 1 auto}.subject-group .subject-tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.subject-group .subject-tabs button{padding:8px 10px;border-radius:14px;text-align:left}}@media(pointer:coarse){.input,.textarea,.select-button{font-size:16px}}@media(max-width:420px){.guest-nav+.tip-anchor{display:none}.l-nav{padding-left:16px;padding-right:16px}}@media(max-width:420px){.l-hero,.l-section{padding-left:16px;padding-right:16px}.l-final{margin-left:12px;margin-right:12px}}@media(max-width:340px){.l-papers-link{display:none}.l-hero h1{font-size:32px}.l-q h3{font-size:20px}.l-sheet-head{flex-wrap:wrap}.l-facts>div{padding-right:12px}.l-facts>div+div{padding-left:12px}}@media(max-width:390px){.l-signin~.btn-primary{display:none}}@media(max-width:340px){.guest-nav{gap:4px}.guest-nav .btn,.guest-nav .btn-primary{padding:0 12px}}.prerender{max-width:760px;margin:0 auto;padding:32px 16px 64px}.prerender img{display:block;max-width:100%;height:auto;margin:12px 0;border-radius:var(--radius-sm);background:#fff}.short-note{display:flex;align-items:flex-start;gap:8px;margin:10px 0 0;color:var(--ink-2);font-size:14px}.short-note svg{width:16px;height:16px;flex:none;margin-top:3px;color:var(--gold)}.short-note a,.short-note .link-btn{color:var(--accent-text);font-weight:600}.short-note .link-btn{padding:0;border:0;background:none;font:inherit;font-weight:600;text-decoration:underline;text-underline-offset:3px;cursor:pointer}.email-step{margin:0;font-size:14px;color:var(--ink-2)}.field-row{display:flex;align-items:baseline;justify-content:space-between;gap:8px}.field-row .link-button{font-size:13.5px}.code-input{letter-spacing:.3em;font-size:20px}.topical-subjects{margin-bottom:20px}.topical{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:20px;align-items:start}.topical .panel{padding:22px;display:grid;gap:14px}.topical-picker h3{margin:0}.topical-mine{justify-self:start}.topical-results{display:grid;gap:20px;min-width:0}.topical-summary{position:sticky;top:76px;z-index:2}.topical-summary .segmented{flex-wrap:wrap}.topical-count{margin:0;font-size:15px}.topical-count strong{font-family:var(--font-display);font-size:22px}.topical-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px}.topical-more{justify-self:center}.topical-view{justify-self:start}.test-row{display:grid;gap:6px}.test-label{font-size:13px;font-weight:600;color:var(--ink-2)}.test-cover h3{margin:0}.test-chapter{display:grid;gap:6px}.test-chapter-name{font-weight:600}.test-cover .item-topics{padding:0}.test-marks{margin-left:6px;padding-left:6px;border-left:1px solid var(--line-2);color:var(--ink-2)}.test-cover .past-note{margin:0;align-items:flex-start}.test-cover .past-note svg{margin-top:2px}@media(max-width:900px){.topical{grid-template-columns:minmax(0,1fr)}.topical-summary{position:static}}@media(max-width:380px){.topbar .wordmark .brand{display:none}}.install-card{display:flex;align-items:center;gap:14px;padding:14px 14px 14px 16px;margin-bottom:20px;animation:rise .35s var(--ease) both}.install-card>img{flex:none;border-radius:11px;box-shadow:var(--shadow-sm)}.install-text{flex:1;min-width:0;display:grid;gap:2px;font-size:14px}.install-text strong{font-size:15px}.share-glyph{width:16px;height:16px;vertical-align:-3px;color:var(--accent-text)}.install-btn{flex:none;min-height:38px;padding:0 14px}.install-close{flex:none;align-self:flex-start;width:32px;height:32px}@media(max-width:420px){.install-card{flex-wrap:wrap}.install-text{flex-basis:calc(100% - 110px)}.install-btn{margin-left:58px}}.resume-actions{display:grid;gap:10px;justify-items:start}.discard-btn{color:var(--muted)}.paper-discard{display:grid;justify-items:center;margin:8px 0 24px}.paper-discard .confirm{width:100%;max-width:520px}.field-note{margin:0;color:var(--muted);font-size:14px}.field-toggle{display:grid;gap:10px;justify-items:start}.time-pick .full-pick{margin-top:8px;flex-wrap:wrap}.card-note{margin:-6px 0 14px;color:var(--muted);font-size:13.5px;line-height:1.45}.topical-link>svg{flex:none;width:18px;height:18px;color:var(--muted)}.subject-tag{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;letter-spacing:0;text-transform:none;white-space:nowrap;vertical-align:middle;color:var(--accent-text)}.subject-tag .subject-dot{width:22px;height:22px}.subject-tag.subject-9702,.subject-tag.subject-9702-P4,.subject-tag.subject-5054{color:var(--blue)}.subject-tag.subject-9701,.subject-tag.subject-5070{color:var(--plum)}.subject-tag.subject-9700,.subject-tag.subject-5090{color:var(--good)}.subject-tag.subject-9618,.subject-tag.subject-2210{color:var(--gold)}.page-head .subject-tag{margin-bottom:8px}.paper-for{display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px}h3>.subject-tag{float:right;font-size:12.5px;margin-top:2px}h3>.subject-tag .subject-dot{width:18px;height:18px}h3>.subject-tag .subject-dot svg{width:11px;height:11px}.settings-group{display:flex;align-items:center;gap:8px;margin:26px 4px 10px;font-size:13px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}.settings-group:first-of-type{margin-top:4px}html.writing-open,html.writing-open body{overflow:hidden}.writing{position:fixed;top:0;right:0;bottom:0;left:0;z-index:150;display:grid;grid-template-rows:auto auto minmax(0,1fr);background:#e6e7ea;color:var(--ink);animation:fade .2s var(--ease)}:root[data-theme=dark] .writing{background:#1a1c22}@media(prefers-color-scheme:dark){:root:not([data-theme=light]) .writing{background:#1a1c22}}.wv-head{display:flex;align-items:center;gap:10px;padding:calc(8px + env(safe-area-inset-top,0px)) 12px 8px;background:var(--surface);border-bottom:1px solid var(--line);min-width:0}.wv-icon{width:40px;height:40px;flex:none;display:grid;place-items:center;border:0;border-radius:999px;background:transparent;color:var(--ink)}.wv-icon:hover{background:var(--bg-2)}.wv-icon svg{width:22px;height:22px}.wv-title{display:grid;min-width:0;flex:1;line-height:1.25}.wv-title strong{font-family:var(--font-display);font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.wv-title .num{font-size:12.5px;color:var(--muted)}.wv-time{flex:none;display:inline-flex;align-items:center;gap:6px;min-height:34px;font-size:13px;font-weight:600;color:var(--ink-2);padding:0 12px 0 10px;border:0;border-radius:999px;background:var(--bg-2)}.wv-time svg{width:14px;height:14px}.paused-cover{position:fixed;top:0;right:0;bottom:0;left:0;z-index:160;display:grid;place-items:center;padding:24px;background:var(--bg);animation:fade .2s var(--ease)}.paused-card{display:grid;justify-items:center;gap:10px;text-align:center;max-width:340px}.paused-card>svg{width:30px;height:30px;padding:14px;box-sizing:content-box;border-radius:999px;background:var(--surface);border:1px solid var(--line);color:var(--ink-2)}.paused-card h2{margin:4px 0 0;font-family:var(--font-display);font-size:28px}.paused-card p{margin:0}.paused-card .btn{margin-top:12px}.wv-zoom{flex:none;min-width:56px;height:34px;border:0;border-radius:999px;background:#1f2128;color:#fff;font-size:13px;font-weight:600}.wv-done{flex:none;min-height:40px}.wv-bar{position:relative;z-index:3;display:flex;align-items:center;justify-content:center;gap:4px;padding:6px 10px;background:#1f2128;color:#e9eaee}.wv-tool{width:44px;height:44px;display:grid;place-items:center;border:0;border-radius:999px;background:transparent;color:inherit;transition:background .15s var(--ease),transform .15s var(--ease)}.wv-tool svg{width:24px;height:24px}.wv-tool:hover:not(:disabled){background:#ffffff14}.wv-tool[aria-pressed=true]{background:#ffffff29}.wv-tool:active:not(:disabled){transform:scale(.92)}.wv-tool:disabled{opacity:.35}.wv-tool{position:relative}.wv-tool:has(.wv-ink-dot) svg{transform:translateY(-3px)}.wv-ink-dot{position:absolute;left:50%;bottom:3px;width:8px;height:8px;margin-left:-4px;border-radius:999px;box-shadow:0 0 0 1.5px #1f2128,0 0 0 2.5px #ffffff8c}.wv-sep{width:1px;height:24px;margin:0 6px;background:#ffffff2e}.wv-quick{display:flex;gap:8px;padding:0 4px}.wv-dot{width:26px;height:26px;border-radius:999px;border:2px solid rgb(255 255 255 / .2);padding:0;transition:transform .15s var(--ease)}.wv-dot[aria-pressed=true]{border-color:#fff;transform:scale(1.12)}.wv-panel{position:absolute;top:calc(100% + 8px);left:50%;transform:translate(-50%);width:min(380px,calc(100vw - 24px));max-height:min(560px,calc(100dvh - 160px));overflow-y:auto;display:grid;gap:18px;padding:18px 20px 20px;border-radius:24px;background:#2a2c33;color:#f1f2f5;box-shadow:0 18px 50px -12px #0000008c;animation:pop-panel .18s var(--ease)}@keyframes pop-panel{0%{opacity:0;transform:translate(-50%,-6px) scale(.98)}}.wv-panel-note{margin:0 32px 0 0;color:#c9cbd3;font-size:14px;line-height:1.45}.wv-panel-x{position:absolute;top:12px;right:12px;width:34px;height:34px;display:grid;place-items:center;border:0;border-radius:999px;background:#ffffff1a;color:inherit}.wv-panel-x svg{width:18px;height:18px}.wv-nibs{display:flex;justify-content:center;gap:14px;padding:0 40px;height:92px;border-bottom:1px solid rgb(255 255 255 / .1);overflow:hidden}.wv-nib{display:grid;justify-items:center;align-content:end;gap:4px;padding:0 8px;border:0;background:transparent;color:#fff9;font-size:11.5px;font-weight:600}.wv-nib-art{width:40px;height:110px;transform:translateY(24px);transition:transform .25s var(--ease)}.wv-nib:hover .wv-nib-art{transform:translateY(16px)}.wv-preview{width:calc(100% - 52px);justify-self:center;height:46px;padding:2px 10px;border-radius:12px;background:#fff}.wv-nib[aria-pressed=true]{color:#fff}.wv-nib[aria-pressed=true] .wv-nib-art{transform:translateY(2px)}.wv-label{font-size:15px;font-weight:600}.wv-slider{display:grid;gap:8px}.wv-slider-row{display:grid;grid-template-columns:36px minmax(0,1fr) 36px;align-items:center;gap:8px}.wv-slider-row>button{width:36px;height:36px;display:grid;place-items:center;border:0;border-radius:999px;background:transparent;color:inherit}.wv-slider-row>button svg{width:22px;height:22px}.wv-track{position:relative;height:30px;margin:0 20px;border-radius:999px;background:#ffffff1a;touch-action:none;cursor:pointer}.wv-track:before{content:"";position:absolute;top:0;right:-20px;bottom:0;left:-20px;border-radius:999px;background:#ffffff1a;background-image:radial-gradient(circle,rgb(255 255 255 / .4) 1.6px,transparent 2px);background-size:22px 100%;background-position:center}.wv-track[data-color]:before{background:linear-gradient(90deg,transparent,var(--track)),repeating-conic-gradient(#3b3d45 0,#3b3d45 25%,#4a4c55 0,#4a4c55 50%) 0 0 / 12px 12px}.wv-thumb{position:absolute;top:50%;width:40px;height:40px;margin:-20px 0 0 -20px;display:grid;place-items:center;border-radius:999px;background:#5b5e68;color:#fff;font-size:14px;font-weight:600;box-shadow:0 2px 8px #00000059;pointer-events:none}.wv-toggle{display:flex;align-items:center;justify-content:space-between;gap:12px}.wv-switch{width:52px;height:30px;flex:none;padding:3px;border:0;border-radius:999px;background:#ffffff38;transition:background .2s var(--ease)}.wv-switch span{display:block;width:24px;height:24px;border-radius:999px;background:#fff;transition:transform .2s var(--ease)}.wv-switch[aria-checked=true]{background:#3d7bf7}.wv-switch[aria-checked=true] span{transform:translate(22px)}.wv-swatches{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.wv-swatch{width:32px;height:32px;display:grid;place-items:center;border:2px solid rgb(255 255 255 / .12);border-radius:999px;color:#fff;transition:transform .15s var(--ease)}.wv-swatch[aria-pressed=true]{transform:scale(1.1);border-color:#fff}.wv-swatch svg{width:18px;height:18px;stroke-width:2.6;filter:drop-shadow(0 1px 1px rgb(0 0 0 / .5))}.wv-seg{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:4px;margin-top:30px;border-radius:999px;background:#ffffff14}.wv-seg button{min-height:38px;border:0;border-radius:999px;background:transparent;color:#ffffffbf;font-weight:600;font-size:13.5px}.wv-seg button[aria-checked=true]{background:#5b5e68;color:#fff}.wv-shapes{display:flex;flex-wrap:wrap;justify-content:center;gap:4px;padding:4px;margin-top:30px;border-radius:18px;background:#ffffff14}.wv-shape{display:grid;place-items:center;width:42px;height:42px;border:0;border-radius:14px;background:transparent;color:#ffffffb3;transition:background .15s var(--ease),color .15s var(--ease)}.wv-shape svg{width:24px;height:24px}.wv-shape:hover{color:#fff}.wv-shape[aria-checked=true]{background:#5b5e68;color:#fff}.wv-clear{min-height:42px;border:1px solid rgb(255 255 255 / .18);border-radius:999px;background:transparent;color:#fff;font-weight:600}.wv-clear.sure{background:#e5352b;border-color:#e5352b}.wv-scroll{position:relative;overflow:auto;overscroll-behavior:contain;touch-action:pan-x pan-y;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}.wv-sheet{box-sizing:border-box;width:max-content;min-width:100%;display:flex;flex-direction:column;align-items:center}.wv-pages{width:max-content;display:grid;justify-items:center;gap:calc(var(--pw) * .025)}.wv-scroll.zooming .wv-end{visibility:hidden}.wv-page{position:relative;width:var(--pw);aspect-ratio:1000 / 1414;background:#fff;color:#12151d;box-shadow:0 1px 3px #0000001f,0 8px 24px -12px #00000040;overflow:hidden;cursor:crosshair}.tool-lasso .wv-page{cursor:default}.tool-text .wv-page{cursor:text}.wv-text-edit{position:absolute;z-index:3;margin:0;padding:0;border:0;background:transparent;font-family:inherit;font-weight:400;white-space:pre-wrap;overflow-wrap:anywhere;overflow:hidden;resize:none;outline:1.5px dashed #2340d0;outline-offset:5px;border-radius:1px;-webkit-user-select:text;user-select:text;caret-color:#2340d0}.wv-page img{position:absolute;pointer-events:none;-webkit-user-drag:none}.wv-b-title,.wv-b-head,.wv-b-text{position:absolute;left:6%;right:6%;pointer-events:none}.wv-b-title strong{display:block;font-family:var(--font-display);font-size:calc(var(--pw) * .026);line-height:1.2}.wv-b-title span{display:block;margin-top:calc(var(--pw) * .006);font-size:calc(var(--pw) * .0125);color:#6a6f7c}.wv-b-head{display:flex;align-items:baseline;gap:calc(var(--pw) * .012);padding-bottom:calc(var(--pw) * .008);border-bottom:1px solid #d9dbe1;font-size:calc(var(--pw) * .017)}.wv-b-head .n{color:#9aa0ad;font-weight:600}.wv-b-head span:last-child{margin-left:auto;color:#6a6f7c;font-size:calc(var(--pw) * .014)}.wv-b-text{font-size:calc(var(--pw) * .016);font-weight:600}.wv-b-note{position:absolute;left:6%;right:6%;pointer-events:none;color:#6a6f7c;font-size:calc(var(--pw) * .0135);font-style:italic}.wv-ink{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;pointer-events:none}.wv-ink.blend{mix-blend-mode:multiply}.wv-base{visibility:hidden}.wv-base.on{visibility:visible}.wv-live{visibility:hidden}.wv-live.on{visibility:visible}.wv-loading{width:min(var(--pw),92vw);aspect-ratio:1000 / 1414;border-radius:4px;background:linear-gradient(90deg,#f1f2f4,#fafafa,#f1f2f4);background-size:200% 100%;animation:wv-shimmer 1.2s linear infinite}@keyframes wv-shimmer{to{background-position:-200% 0}}.wv-end{display:grid;justify-items:center;gap:12px;padding:18px 0 8px;color:var(--ink-2);font-weight:600}.wv-sel{position:absolute;border:1.5px dashed #2340d0;border-radius:6px;background:#2340d00a;pointer-events:none;animation:fade .15s var(--ease)}.wv-sel-handle{position:absolute;right:-11px;bottom:-11px;width:20px;height:20px;border-radius:999px;background:#fff;border:2px solid #2340d0}.wv-shape-handle{position:absolute;width:13px;height:13px;margin:-6.5px 0 0 -6.5px;border-radius:999px;background:#fff;border:2px solid #2340d0;box-shadow:0 1px 3px #0003;pointer-events:none;animation:fade .15s var(--ease)}.wv-sel-menu{position:absolute;bottom:calc(100% + 10px);left:50%;transform:translate(-50%);display:flex;gap:2px;padding:4px;border-radius:14px;background:#2a2c33;box-shadow:0 10px 30px -10px #00000080;pointer-events:auto;white-space:nowrap}.wv-sel-menu.below{bottom:auto;top:calc(100% + 16px)}.wv-sel-menu button{min-height:38px;padding:0 12px;border:0;border-radius:10px;background:transparent;color:#fff;font-weight:600;font-size:14px}.wv-sel-menu button:hover{background:#ffffff1a}.wv-sel-colors{display:flex;align-items:center;gap:6px;padding:0 4px}.wv-note{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom,0px));transform:translate(-50%);max-width:calc(100vw - 32px);padding:10px 16px;border-radius:12px;background:#12151dd1;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);color:#fff;font-size:14px;font-weight:500;z-index:5;animation:fade .2s var(--ease)}@media(max-width:640px){.wv-bar{gap:0;justify-content:space-around}.wide-only{display:none}.wv-sep{margin:0 2px}.wv-tool{width:42px;height:42px}.wv-head{gap:6px;padding-left:6px;padding-right:8px}.wv-time span{display:none}.wv-time{width:40px;padding:0;justify-content:center}.wv-done{padding:0 14px}}@media(max-width:480px){.wv-zoom,.wv-done .wide-text{display:none}}.wv-main{min-height:0;display:grid;grid-template-columns:minmax(0,1fr)}.wv-main.beside{grid-template-columns:minmax(0,1fr) min(42%,520px)}.wv-main>.wv-scroll{min-height:0}.wv-b-mslabel{position:absolute;left:6%;right:6%;display:flex;align-items:center;gap:calc(var(--pw) * .008);border-top:2px solid #2340d0;color:#2340d0;font-size:calc(var(--pw) * .0135);font-weight:700;letter-spacing:.06em;text-transform:uppercase;pointer-events:none}.wv-b-mslabel svg{width:calc(var(--pw) * .018);height:calc(var(--pw) * .018);stroke-width:2.6}.wv-page img.scheme{outline:1px solid #dfe4fb;outline-offset:calc(var(--pw) * .004)}.wv-b-mark{position:absolute;left:6%;right:6%;display:flex;align-items:center;justify-content:space-between;gap:calc(var(--pw) * .015);padding:0 calc(var(--pw) * .016);border-radius:calc(var(--pw) * .012);background:#f3f5fe;border:1px solid #dfe4fb;color:#12151d;font-size:calc(var(--pw) * .015);font-weight:600;cursor:default}.wv-b-mark .marks{flex-wrap:nowrap;gap:calc(var(--pw) * .006)}.wv-b-mark .marks button{width:max(28px,calc(var(--pw) * .042));height:max(28px,calc(var(--pw) * .042));border-radius:calc(var(--pw) * .01);font-size:max(12px,calc(var(--pw) * .015));background:#fff;border-color:#d6d9e3;color:#2b2f3a}.wv-mcq strong{color:#2340d0}.wv-seg-head{flex:none;display:flex;gap:2px;padding:3px;border-radius:999px;background:var(--bg-2)}.wv-seg-head button{min-height:32px;padding:0 12px;border:0;border-radius:999px;background:transparent;color:var(--muted);font-size:13px;font-weight:600}.wv-seg-head button[aria-checked=true]{background:var(--surface);color:var(--ink);box-shadow:var(--shadow-sm)}.wv-side{position:relative;overflow-y:auto;overscroll-behavior:contain;display:grid;align-content:start;gap:12px;padding:16px 16px 40px;background:var(--bg);border-left:1px solid var(--line)}.wv-side-card{display:grid;gap:10px;padding:14px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}.wv-side-card.on{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 16%,transparent)}.wv-side-card header{display:flex;align-items:baseline;gap:8px;font-size:14px}.wv-side-card header .n{color:var(--faint);font-weight:600}.wv-side-card header .num{margin-left:auto;color:var(--muted);font-size:13px}.wv-side-card img{width:100%;height:auto;border-radius:6px;background:#fff}.wv-side-marks{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px;font-size:13.5px;font-weight:600;color:var(--ink-2)}.wv-side-marks .marks button{width:36px;height:36px}@media(max-width:640px){.wv-b-mark{flex-wrap:wrap;align-content:center;row-gap:2px}}.wv-scroll.reading .wv-page{cursor:default}.wv-write[aria-pressed=true]{background:#1f2128;color:#fff}.wv-write svg{width:20px;height:20px}.choice-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 14px;margin-top:12px;padding:10px 14px;border-radius:var(--radius);background:var(--accent-soft)}.choice-row .label{font-weight:600;color:var(--ink-2)}.choice-row.done .label{color:var(--ink)}.choices{display:inline-flex;gap:8px}.choices button{width:44px;height:44px;border-radius:12px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink-2);font-weight:700;font-size:16px;transition:all .15s var(--ease)}.choices button:not(:disabled):hover{border-color:var(--ink-2);color:var(--ink)}.choices button[aria-checked=true]{border-color:var(--accent);background:var(--accent);color:var(--accent-ink)}.choices button.right{border-color:var(--good);background:var(--good);color:#fff;animation:pop .28s var(--ease)}.choices button.wrong{border-color:var(--weak);background:var(--weak);color:#fff}.choices button:disabled:not(.right):not(.wrong):not([aria-checked=true]){opacity:.45;cursor:default}.choice-result{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14px}.choice-result svg{width:18px;height:18px;stroke-width:2.6}.choice-result.right{color:var(--good)}.choice-result.wrong{color:var(--weak)}.wv-b-choice{position:absolute;left:6%;right:6%;display:flex;align-items:center;cursor:default}.wv-b-choice .choice-row{flex:1;margin:0;padding:0 calc(var(--pw) * .016);height:100%;border-radius:calc(var(--pw) * .012);background:#f3f5fe;border:1px solid #dfe4fb;font-size:max(12px,calc(var(--pw) * .015));flex-wrap:nowrap}.wv-b-choice .choice-row .label{color:#2b2f3a}.wv-b-choice .choices{gap:calc(var(--pw) * .008)}.wv-b-choice .choices button{width:max(30px,calc(var(--pw) * .045));height:max(30px,calc(var(--pw) * .045));border-radius:calc(var(--pw) * .01);font-size:max(13px,calc(var(--pw) * .017));background:#fff;border-color:#d6d9e3;color:#2b2f3a}.wv-b-choice .choices button[aria-checked=true]{background:#2340d0;border-color:#2340d0;color:#fff}.wv-b-choice .choices button.right{background:#1f9d55;border-color:#1f9d55;color:#fff}.wv-b-choice .choices button.wrong{background:#e0533d;border-color:#e0533d;color:#fff}.wv-b-answer{position:absolute;left:6%;right:6%;display:flex;align-items:center;justify-content:flex-end;gap:calc(var(--pw) * .016);padding:0 calc(var(--pw) * .016);border-radius:calc(var(--pw) * .012);background:#f3f5fe;border:1px solid #dfe4fb;color:#4a5060;font-size:max(12px,calc(var(--pw) * .015));cursor:default}.wv-b-answer .btn{min-height:0;height:72%;padding:0 calc(var(--pw) * .022);font-size:max(12px,calc(var(--pw) * .016))}@media(max-width:400px){.wv-bar{padding-left:4px;padding-right:4px}.wv-tool{width:37px;height:40px}.wv-tool svg{width:22px;height:22px}}.marks-tick{display:inline-grid;place-items:center;width:28px;height:40px}.marks-tick svg{width:20px;height:20px;stroke-width:2.4;stroke-dasharray:26;stroke-dashoffset:26;animation:tick-stroke .24s .04s var(--ease) forwards}.marks-tick.full{color:var(--good)}.marks-tick.some{color:var(--mid)}.marks-tick.none{color:var(--weak)}.marked-chip svg{stroke-dasharray:26;stroke-dashoffset:26;animation:tick-stroke .24s .06s var(--ease) forwards}@keyframes tick-stroke{to{stroke-dashoffset:0}}.check:after{transition:opacity .12s var(--ease)}.check:checked:after{animation:pen-tick .22s var(--ease) both}@keyframes pen-tick{0%{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0 0 0 0)}}.week .fresh .dot{animation:streak-fill .25s var(--ease) both}@keyframes streak-fill{0%{background:transparent;box-shadow:inset 0 0 0 2px var(--accent);transform:scale(.8)}to{transform:scale(1)}}::view-transition-old(root),::view-transition-new(root){animation-duration:.18s;animation-timing-function:var(--ease)}@media(prefers-reduced-motion:reduce){::view-transition-old(root),::view-transition-new(root){animation:none}.marks-tick svg,.marked-chip svg{stroke-dashoffset:0}}.layout-pick{flex-wrap:nowrap;gap:2px;padding:3px;border-radius:999px;background:var(--bg-2)}.layout-pick button{display:inline-flex;align-items:center;gap:6px;min-width:0;min-height:36px;padding:0 14px;border:0;background:transparent;font-size:14px}.layout-pick button svg{width:16px;height:16px}.layout-pick button[aria-checked=true]{background:var(--surface);color:var(--ink);box-shadow:var(--shadow-sm)}.new-badge{padding:1px 6px;border-radius:999px;background:var(--gold-soft);color:var(--gold);font-size:11px;font-weight:700;letter-spacing:.02em}.dialog-cover{position:fixed;top:0;right:0;bottom:0;left:0;z-index:180;display:grid;place-items:center;padding:20px;background:#12151d73;animation:fade .15s var(--ease)}.dialog-card{width:min(420px,100%);display:grid;gap:10px;padding:22px;border-radius:18px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-lg);animation:rise .2s var(--ease)}.dialog-card h2{margin:0;font-family:var(--font-display);font-size:21px}.dialog-card p{margin:0;color:var(--ink-2);font-size:15px;line-height:1.5}.dialog-card .row{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}.wv-main.only>.wv-scroll{display:none}.wv-main.only>.wv-side{border-left:0;padding-left:max(16px,calc((100% - 640px)/2));padding-right:max(16px,calc((100% - 640px)/2))}.remove-subjects{display:grid;gap:8px}.remove-subject{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 8px 8px 12px;border:1px solid var(--line);border-radius:var(--radius)}.whatsnew-icons{flex:none;display:flex}.whatsnew-icons .subject-dot{width:34px;height:34px;border:2px solid var(--surface)}.whatsnew-icons .subject-dot svg{width:18px;height:18px}.whatsnew-icons .subject-dot+.subject-dot{margin-left:-10px}@media(max-width:420px){.whatsnew-card .install-text{flex-basis:calc(100% - 120px)}.whatsnew-card .install-btn{margin-left:68px}}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.paper-choice{flex:1;display:grid;align-content:center;justify-items:center;gap:32px}main:has(>.paper-choice){display:flex;flex-direction:column;padding-bottom:36px}@media(max-width:760px){main:has(>.paper-choice){padding-bottom:calc(24px + env(safe-area-inset-bottom,0px))}.app:has(>.tabbar) main:has(>.paper-choice){padding-bottom:calc(87px + env(safe-area-inset-bottom,0px))}}.paper-choice-head{text-align:center}.paper-choice-head h1{margin:0}.paper-choice-head p{margin:6px 0 0;color:var(--muted);font-size:17px}.paper-choice-list{display:grid;gap:14px;width:100%;max-width:440px}.paper-choice-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:14px;padding:14px 16px 14px 14px;border:1px solid var(--line-2);border-radius:18px;background:var(--surface);box-shadow:var(--shadow-sm);color:inherit;text-decoration:none;-webkit-tap-highlight-color:transparent;transition:border-color .15s var(--ease),transform .15s var(--ease)}.paper-choice-icon{display:grid;place-items:center;width:46px;height:46px;border-radius:13px;background:var(--blue-soft);color:var(--blue);transition:background .15s var(--ease),color .15s var(--ease)}.paper-choice-icon svg{width:22px;height:22px}.paper-choice-text{display:grid;gap:2px}.paper-choice-text strong{font-family:var(--font-display);font-size:18px;font-weight:600;letter-spacing:-.01em}.paper-choice-text span{color:var(--muted);font-size:13.5px}.paper-choice-row>svg{width:18px;height:18px;color:var(--muted);transition:transform .15s var(--ease),color .15s var(--ease)}.paper-choice-row:hover,.paper-choice-row:focus-visible{outline:none;border-color:var(--accent)}.paper-choice-row:hover .paper-choice-icon,.paper-choice-row:focus-visible .paper-choice-icon{background:var(--accent);color:var(--accent-ink)}.paper-choice-row:hover>svg,.paper-choice-row:focus-visible>svg{color:var(--accent-text);transform:translate(2px)}.paper-choice-row:active{transform:scale(.98)}.finder-compact{padding:0;margin-bottom:18px;background:transparent;border:0;box-shadow:none}.finder-compact .finder-box .input{min-height:48px;font-size:16px}.finder-compact .finder-results{margin-top:4px}.other-subjects{justify-self:start;display:inline-flex;align-items:center;gap:6px;min-height:40px;padding:0 2px;border:0;background:none;color:var(--accent-text);font:inherit;font-weight:600}.other-subjects svg{width:16px;height:16px;transition:transform .2s var(--ease)}.other-subjects[aria-expanded=true] svg{transform:rotate(180deg)}.my-subjects{display:grid;gap:6px}.topic-stats .stat{padding:16px 18px}.topic-links{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:22px}.topic-links>.muted{margin-right:4px;font-size:14px}a.chip{text-decoration:none;transition:color .15s var(--ease),box-shadow .15s var(--ease)}a.chip-outline:hover{color:var(--accent-text);box-shadow:inset 0 0 0 1px var(--accent)}.topic-count{margin:4px 0 14px;font-size:18px}.topic-page .topical-more{display:flex;margin:18px auto 0}.topic-more{margin-top:28px}.topic-chapter{margin-bottom:14px;padding:18px 22px}.topic-chapter h2{margin:0 0 8px;font-size:18px}.topic-chapter ul{margin:0;padding:0;list-style:none}.topic-chapter li{display:flex;justify-content:space-between;gap:12px;padding:8px 0;border-top:1px solid var(--line)}.topic-chapter li:first-child{border-top:0}.topic-chapter li a{color:var(--ink);font-weight:600;text-decoration:none}.topic-chapter li a:hover{color:var(--accent-text)}.topic-chapter li .num{flex:none;font-size:14px}.years-topics{justify-self:start}@media(max-width:420px){.topic-chapter{padding:16px}}
