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#3c2d191c;color-scheme:light}:root[data-theme=dark]{--paper:#101318;--paper-deep:#0b0e12;--surface:#191d25;--raised:#20252e;--sunken:#23282f;--ink:#eceae5;--muted:#a8adb7;--faint:#7c828d;--rule:#2b313a;--rule-strong:#3d444f;--accent:#79b5c9;--accent-strong:#a2d2e2;--accent-soft:#172831;--accent-line:#2c4653;--on-accent:#0c1f27;--pencil:#e2ae52;--pencil-soft:#2a2116;--pencil-line:#4d3d21;--mastery-none:#767b85;--mastery-learning:#e08a3c;--mastery-shaky:#cbaa3e;--mastery-mastered:#58bd90;--danger:#e97f69;--danger-soft:#2e1d19;--success-soft:#16281f;--subject-math:#79b5c9;--subject-eng:#b294d6;--subject-chi:#e08a76;--subject-sci:#58bd90;--subject-hum:#d5b25a;--shadow-card:0 1px 2px #00000057,0 2px 8px #0000004d;--shadow-lift:0 2px 6px #00000061,0 12px 28px #00000070;--shadow-deep:0 4px 12px #0000006b,0 24px 48px #00000080;color-scheme:dark}:root{--font-display:"Source Serif 4","Noto Sans HK","PingFang HK",Georgia,serif;--font-sans:"Source Sans 3","Noto Sans HK","PingFang HK","Microsoft JhengHei",system-ui,sans-serif;--font-mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;--band-text:17px;--band-touch:48px;--band-radius:12px}[data-band=kg]{--band-text:21px;--band-touch:64px;--band-radius:20px}[data-band=secondary]{--band-text:16px;--band-touch:44px;--band-radius:8px}body{background:var(--paper);color:var(--ink);font-size:var(--band-text);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;line-height:1.6}h1,h2,h3{font-family:var(--font-display);letter-spacing:-.011em;text-wrap:balance;font-weight:600;line-height:1.22}:lang(zh-Hant-HK) h1,:lang(zh-Hant-HK) h2,:lang(zh-Hant-HK) h3{font-family:var(--font-sans);letter-spacing:0;font-weight:700}.tp-frac,.tp-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}.tp-frac{vertical-align:middle;align-items:center;gap:.2em;display:inline-flex}.tp-frac-whole{font-size:1.05em}.tp-frac-stack{flex-direction:column;align-items:center;font-size:.82em;line-height:1.06;display:inline-flex}.tp-frac-n{padding:0 .24em .08em}.tp-frac-d{border-top:1.5px solid;padding:.08em .24em 0}.tp-math-line{line-height:2.05}.tp-eyebrow{font-family:var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--faint);font-size:.7rem;font-weight:500}.tp-card{background:var(--surface);border:1px solid var(--rule);border-radius:var(--band-radius);box-shadow:var(--shadow-card)}.tp-link-card{transition:box-shadow .16s,border-color .16s,transform .16s;position:relative}.tp-link-card:hover{box-shadow:var(--shadow-lift);border-color:var(--rule-strong);transform:translateY(-2px)}.tp-link-card:after{content:"";border-radius:var(--band-radius) var(--band-radius) 0 0;background:var(--card-accent,var(--accent));opacity:0;pointer-events:none;height:3px;transition:opacity .16s;position:absolute;inset:-1px -1px auto}.tp-link-card:hover:after{opacity:1}.tp-button{font-family:var(--font-sans);border-radius:calc(var(--band-radius) - 4px);font-weight:600;transition:background .14s,color .14s,box-shadow .14s,transform .14s}.tp-button:disabled{cursor:not-allowed}.tp-button-primary{background:var(--accent);color:var(--on-accent);border:1px solid var(--accent);box-shadow:var(--shadow-card)}.tp-button-primary:hover:not(:disabled){background:var(--accent-strong);border-color:var(--accent-strong);box-shadow:var(--shadow-lift);transform:translateY(-1px)}.tp-button-primary:active:not(:disabled){box-shadow:var(--shadow-card);transform:translateY(0)}.tp-option{transition:background-color .13s,border-color .13s,box-shadow .13s}.tp-option:hover:not([data-marked]){border-color:var(--rule-strong);background:var(--sunken)}.tp-option:has(input:focus-visible){outline:2px solid var(--accent);outline-offset:2px}.tp-year-chip{border-color:var(--rule-strong);color:var(--muted);transition:background-color .14s,border-color .14s,color .14s}.tp-year-chip:hover{background:var(--chip)}@supports (color:color-mix(in lab,red,red)){.tp-year-chip:hover{background:color-mix(in srgb,var(--chip) 13%,transparent)}}.tp-year-chip:hover{border-color:var(--chip)}@supports (color:color-mix(in lab,red,red)){.tp-year-chip:hover{border-color:color-mix(in srgb,var(--chip) 45%,transparent)}}.tp-year-chip:hover{color:var(--chip)}.tp-hero-wash{background:radial-gradient(62rem 32rem at 8% -18%,var(--accent),transparent 66%),radial-gradient(48rem 26rem at 96% -8%,var(--pencil),transparent 62%)}@supports (color:color-mix(in lab,red,red)){.tp-hero-wash{background:radial-gradient(62rem 32rem at 8% -18%,color-mix(in srgb,var(--accent) 11%,transparent),transparent 66%),radial-gradient(48rem 26rem at 96% -8%,color-mix(in srgb,var(--pencil) 13%,transparent),transparent 62%)}}.tp-ruled{background-image:repeating-linear-gradient(to bottom,transparent 0,transparent calc(1.9em - 1px),var(--accent) calc(1.9em - 1px),var(--accent) 1.9em)}@supports (color:color-mix(in lab,red,red)){.tp-ruled{background-image:repeating-linear-gradient(to bottom,transparent 0,transparent calc(1.9em - 1px),color-mix(in srgb,var(--accent) 13%,transparent) calc(1.9em - 1px),color-mix(in srgb,var(--accent) 13%,transparent) 1.9em)}}.tp-stat{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em;font-weight:600}@keyframes tp-rise{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.tp-rise{animation:tp-rise .22s cubic-bezier(.22,.68,.36,1) both}@keyframes tp-pop{0%{opacity:0;transform:scale(.7)}62%{opacity:1;transform:scale(1.08)}to{opacity:1;transform:scale(1)}}.tp-pop{animation:tp-pop .32s cubic-bezier(.3,1.3,.5,1) both}:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:3px}@media (prefers-reduced-motion:reduce){*,:after,:before{transition-duration:.01ms!important;animation-duration:.01ms!important}.tp-button-primary:hover:not(:disabled),.tp-link-card:hover{transform:none}}@property --tw-space-y-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-leading{syntax:"*";inherits:false}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-tracking{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-backdrop-blur{syntax:"*";inherits:false}@property --tw-backdrop-brightness{syntax:"*";inherits:false}@property --tw-backdrop-contrast{syntax:"*";inherits:false}@property --tw-backdrop-grayscale{syntax:"*";inherits:false}@property --tw-backdrop-hue-rotate{syntax:"*";inherits:false}@property --tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}@property --tw-scale-x{syntax:"*";inherits:false;initial-value:1}@property --tw-scale-y{syntax:"*";inherits:false;initial-value:1}@property --tw-scale-z{syntax:"*";inherits:false;initial-value:1}