@import"https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@500;600;700&family=Noto+Serif+KR:wght@400;500;600&display=swap";:root{color-scheme:light;font-family:"Noto Serif KR",Apple SD Gothic Neo,serif;color:#12110f;background:#f5f1ea;--ink: #12110f;--ink-muted: #4f4a45;--accent: #195448;--accent-dark: #0c3229;--accent-soft: #dfeee8;--surface: #ffffff;--surface-tint: #fbf7f1;--border: #ddd0c3;--shadow-soft: 0 8px 18px rgba(17, 18, 17, .06);--shadow-strong: 0 14px 32px rgba(16, 18, 17, .1);--container-max: 1320px;--content-x: clamp(20px, 3vw, 40px);--section-gap: clamp(28px, 4vw, 40px);--grid-gap: clamp(16px, 2vw, 24px);--radius-card: 16px;--radius-panel: 18px;--radius-pill: 999px;--font-display-family: "Cormorant Garamond", serif;--font-body-family: "Noto Serif KR", "Apple SD Gothic Neo", serif;--font-size-display: clamp(32px, 3.8vw, 52px);--font-size-title: 22px;--font-size-body: 16px;--font-size-meta: 12px;--font-title: var(--font-size-display);--font-h2: clamp(22px, 2.2vw, 32px);--font-body: var(--font-size-body);--font-meta: var(--font-size-meta);--shadow: var(--shadow-soft)}*{box-sizing:border-box}body{margin:0;min-height:100vh;color:var(--ink);font-family:var(--font-body-family);line-height:1.6;background:radial-gradient(circle at top left,#fef9f0,#f3efe8 45%,#e8f1ee);font-feature-settings:"liga" 1,"kern" 1;text-rendering:geometricPrecision}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;background:linear-gradient(120deg,rgba(27,95,80,.06),transparent 40%),radial-gradient(circle at 70% 10%,rgba(11,51,40,.08),transparent 55%);pointer-events:none;z-index:0}#root{position:relative;z-index:1}.shell{min-height:100vh;display:flex;flex-direction:column}.shell__header{position:sticky;top:0;z-index:5;background:#ffffffd1;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}.topbar{display:grid;grid-template-columns:minmax(220px,1.15fr) auto auto;align-items:center;gap:20px;padding:20px var(--content-x) 12px;background:transparent}.brand{display:flex;align-items:flex-start;gap:16px;text-decoration:none;color:inherit}.brand--link:hover{opacity:.9}.brand__dot{width:14px;height:14px;border-radius:999px;background:var(--accent);box-shadow:0 0 0 6px #1b5f5029;margin-top:6px}.brand__copy{display:grid;gap:2px;min-width:0}.brand__eyebrow{margin:0;font-size:11px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--accent-dark)}.brand__title{margin:0;font-family:var(--font-display-family);font-weight:700;font-size:18px;line-height:1.1}.brand__subtitle{margin:4px 0 0;font-size:var(--font-meta);color:var(--ink-muted)}.nav{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;align-items:center}.nav__link{text-decoration:none;color:var(--ink-muted);font-weight:600;padding:6px 0;border-radius:0;background:transparent;border-bottom:2px solid transparent;transition:color .2s ease,border-color .2s ease}.nav__link.active{color:var(--accent-dark);border-bottom-color:var(--accent)}.nav__link:hover{color:var(--accent-dark);border-bottom-color:#19544859}.nav__link--train{color:var(--accent-dark);font-weight:700}.nav__link--train:hover{color:var(--accent-dark)}.nav__link--train.active{color:var(--accent-dark);border-bottom-color:var(--accent-dark)}.topbar__actions{display:flex;gap:12px;justify-content:flex-end;flex-wrap:wrap}.hub-strip{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:end;padding:8px var(--content-x) 16px}.hub-strip__copy{display:grid;gap:8px;max-width:60ch}.hub-strip__eyebrow{margin:0;color:var(--accent-dark);text-transform:uppercase;letter-spacing:.18em;font-size:11px;font-weight:700}.hub-strip__heading{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}.hub-strip__title{margin:0;font-family:var(--font-display-family);font-size:clamp(30px,3vw,48px);line-height:1;letter-spacing:-.03em}.hub-strip__tag{display:inline-flex;align-items:center;min-height:30px;padding:4px 12px;border-radius:999px;background:var(--accent-soft);color:var(--accent-dark);font-size:12px;font-weight:700}.hub-strip__body{margin:0;max-width:56ch;color:var(--ink-muted)}.hub-strip__links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;min-width:min(100%,420px)}.hub-strip__link{text-decoration:none;display:grid;gap:3px;padding:10px 0 12px;border-radius:0;border-top:1px solid var(--border);background:transparent;color:var(--ink);box-shadow:none;transition:transform .2s ease,color .2s ease,border-color .2s ease}.hub-strip__link:hover{transform:translateY(-1px);color:var(--accent-dark)}.hub-strip__link.active{border-top-color:var(--accent)}.hub-strip__link--primary{color:var(--accent-dark)}.hub-strip__link-label{font-weight:700}.hub-strip__link-note{font-size:12px;color:var(--ink-muted)}.content{width:min(100%,var(--container-max));margin:0 auto;padding:40px var(--content-x) 88px}.section{display:grid;gap:18px}.section__header{display:flex;justify-content:space-between;align-items:flex-start;gap:20px}.section__heading{display:grid;gap:8px;min-width:0}.section__eyebrow{margin:0;text-transform:uppercase;letter-spacing:.2em;font-size:var(--font-meta);color:var(--ink-muted)}.section__title{margin:0;font-family:var(--font-display-family);font-size:clamp(28px,3vw,44px);line-height:1.04;letter-spacing:-.02em}.section__body{margin:0;max-width:64ch;color:var(--ink-muted)}.section__actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:flex-end}.section__content,.section__footer{min-width:0}.home-section{gap:20px}.home-route-list{display:grid;grid-template-columns:1fr;gap:0;border-top:1px solid var(--border)}.home-route{display:flex;justify-content:space-between;gap:20px;align-items:baseline;text-decoration:none;color:inherit;padding:16px 0;border-bottom:1px solid var(--border)}.home-route:hover .home-route__title,.home-route:hover .home-route__cta{color:var(--accent-dark)}.home-route__copy{display:grid;gap:4px;min-width:0}.home-route__title{margin:0;font-family:var(--font-display-family);font-size:20px;line-height:1.1;font-weight:600}.home-route__body{margin:0;color:var(--ink-muted);max-width:42ch}.home-route__cta{flex-shrink:0;font-size:13px;font-weight:700;color:var(--accent)}.home-note-list{display:grid;gap:0;border-top:1px solid var(--border)}.home-note{display:grid;gap:6px;padding:16px 0;border-bottom:1px solid var(--border)}.home-note h3{margin:0;font-family:var(--font-display-family);font-size:20px;line-height:1.12}.home-note p{margin:0;color:var(--ink-muted);max-width:60ch}.home-callout{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;padding-top:4px;border-top:1px solid var(--border)}.home-callout__copy{display:grid;gap:10px;max-width:58ch}.types-page{gap:clamp(32px,3.4vw,52px)}.types-hero{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);gap:clamp(24px,3vw,40px);align-items:start}.types-hero__copy{display:grid;gap:18px}.types-hero__rail{display:grid;gap:14px;padding-left:24px;border-left:1px solid var(--border)}.types-hero__rail-head{display:flex;justify-content:space-between;gap:12px;align-items:center}.types-hero__rail-eyebrow{margin:0;font-size:11px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--accent-dark)}.types-hero__rail-body{display:grid;gap:10px}.types-hero__rail-row{display:flex;justify-content:space-between;gap:16px;align-items:baseline;padding-bottom:10px;border-bottom:1px solid var(--border)}.types-hero__rail-label{margin:0;color:var(--ink-muted);font-size:var(--font-meta)}.types-hero__rail-value{margin:0;font-family:var(--font-display-family);font-size:18px;line-height:1.1;text-align:right}.types-hero__rail-footer{padding-top:4px}.types-flow{display:grid;gap:0;margin:8px 0 0;padding:0;list-style:none;border-top:1px solid var(--border)}.types-flow__item{display:grid;grid-template-columns:48px minmax(0,1fr);gap:14px;align-items:start;padding:14px 0;border-bottom:1px solid var(--border)}.types-flow__index{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:999px;border:1px solid var(--border);background:var(--surface-tint);font-family:var(--font-display-family);font-size:16px;font-weight:600;color:var(--accent-dark)}.types-flow__copy{display:grid;gap:4px}.types-flow__title{margin:0;font-size:15px;font-weight:700;color:var(--ink)}.types-flow__body{margin:0;color:var(--ink-muted);line-height:1.6}.train-route{display:grid;gap:16px;padding:26px 0 8px;border-bottom:1px solid var(--border)}.train-route__copy{display:grid;gap:10px;max-width:64ch}.train-route__title{margin:0;font-family:var(--font-display-family);font-size:clamp(34px,4vw,56px);line-height:.98;letter-spacing:-.03em}.train-route__body{margin:0;color:var(--ink-muted);max-width:56ch}.train-route__actions{display:flex;flex-wrap:wrap;gap:12px}.train-route__actions--secondary{padding-top:2px}.train-route__meta{display:flex;flex-wrap:wrap;gap:8px}.train-route__note{margin-top:-4px}.surface{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-soft)}.surface--soft{background:var(--surface-tint)}.surface--accent{background:linear-gradient(160deg,#fff,#edf7f0)}.surface--elevated{box-shadow:var(--shadow-strong)}.stack{display:grid}.stack--xs{gap:8px}.stack--sm{gap:12px}.stack--md{gap:16px}.stack--lg{gap:24px}.responsive-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(var(--responsive-grid-min, 18rem),1fr));gap:var(--responsive-grid-gap, var(--grid-gap))}.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,3vw,40px);align-items:start}.train-split{grid-template-columns:minmax(0,1.46fr) minmax(280px,.74fr);gap:clamp(20px,2.4vw,36px)}.split--balanced{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr)}.split--reverse>:first-child{order:2}.split--reverse>:last-child{order:1}.metrics-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px}.metric{display:grid;gap:4px;padding:14px 16px;border:1px solid var(--border);border-radius:14px;background:#ffffffe0}.metric__label{margin:0;font-size:var(--font-meta);color:var(--ink-muted)}.metric__value{margin:0;font-weight:700}.page{display:flex;flex-direction:column;gap:clamp(28px,3vw,48px)}.hero{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(28px,3vw,44px);align-items:center}.hero--home{align-items:start}.eyebrow{text-transform:uppercase;letter-spacing:.2em;font-size:12px;color:var(--ink-muted);margin-bottom:12px}.hero__title{font-family:var(--font-display-family);font-size:clamp(42px,6vw,84px);margin:0 0 16px;line-height:.96;letter-spacing:-.04em}.hero__title span{color:var(--accent)}.hero__body{font-size:var(--font-body);color:var(--ink-muted);line-height:1.75;max-width:56ch}.hero__actions{margin-top:24px;display:flex;gap:16px;flex-wrap:wrap}.hero__facts{margin-top:28px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;padding-top:18px;border-top:1px solid var(--border)}.hero__fact{display:grid;gap:4px}.hero__fact dt{margin:0;font-size:var(--font-meta);color:var(--ink-muted)}.hero__fact dd{margin:0;font-family:var(--font-display-family);font-size:20px;line-height:1.1;font-weight:600}.home-rail{display:grid;gap:14px;padding-left:24px;border-left:1px solid var(--border);align-self:stretch}.home-rail__header{display:flex;justify-content:space-between;align-items:center;gap:12px}.home-rail__eyebrow{margin:0;color:var(--accent-dark);text-transform:uppercase;letter-spacing:.18em;font-size:11px;font-weight:700}.home-rail__stack{display:grid;gap:10px}.home-rail__row{display:flex;justify-content:space-between;gap:16px;align-items:baseline;padding-bottom:12px;border-bottom:1px solid var(--border)}.home-rail__label{margin:0;font-size:var(--font-meta);color:var(--ink-muted)}.home-rail__value{margin:0;font-family:var(--font-display-family);font-size:18px;line-height:1.1;font-weight:600;text-align:right}.home-rail__footer{padding-top:4px}.pill{background:var(--accent-soft);color:var(--accent-dark);border-radius:var(--radius-pill);padding:6px 12px;font-weight:600;font-size:12px}.pill--dark{background:var(--accent-dark);color:#fff}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;align-items:stretch}.grid>article:first-child{grid-column:span 2}.card,.surface{background:#ffffffe0;border:1px solid var(--border);border-radius:20px;padding:24px 22px;box-shadow:var(--shadow-soft)}.card--accent,.surface--accent{background:linear-gradient(160deg,#fff,#edf7f0)}.card h1,.card h2,.card h3{font-family:var(--font-display-family);margin-top:0;letter-spacing:-.02em}.card h1{font-size:var(--font-title);line-height:1.1}.card h2{font-size:clamp(24px,2.4vw,34px);line-height:1.12}.card h3{font-size:clamp(18px,1.4vw,24px);line-height:1.16}.type-group{display:grid;gap:18px}.type-group__header{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;padding-bottom:12px;border-bottom:1px solid var(--border)}.type-group__header h2{margin:0}.type-group__heading{display:grid;gap:4px}.type-group__eyebrow,.type-index-item__eyebrow{margin-bottom:0}.type-directory{display:grid;gap:0;border-top:1px solid var(--border)}.type-index-item{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px;align-items:end;padding:18px 0;border-bottom:1px solid var(--border)}.type-index-item__copy{display:grid;gap:6px}.type-index-item__head{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.type-index-item__head h3{margin:0;font-family:var(--font-display-family);font-size:24px;line-height:1.08}.type-index-item__hint{margin:0;max-width:68ch;color:var(--ink-muted);line-height:1.7}.type-index-item__copy p:not(.progress-muted){margin:0}.type-index-item__modes{display:flex;flex-wrap:wrap;gap:8px 12px;color:var(--ink-muted);font-size:13px}.type-index-item__modes span:nth-child(odd){color:var(--accent-dark);font-weight:700}.type-index-item__actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}.train{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:28px;align-items:start}.train__left,.train__right{min-width:0}.train__left{display:grid;gap:18px}.train__right{display:grid;gap:14px;align-content:start}.train__hero{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;margin-bottom:16px}.train__hero h1{margin-bottom:8px}.train__cta{display:flex;gap:10px;flex-wrap:wrap}.train__stats,.train__bank{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;align-items:center}.stat__label{margin:0;font-size:var(--font-meta);color:var(--ink-muted)}.stat__value{margin:6px 0 0;font-weight:600}.kbd-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.kbd-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:12px;text-align:center}.filter__row{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.filter__section{margin-top:16px}.filter__section:first-of-type{margin-top:0}.filter__label{margin:0;font-size:var(--font-meta);color:var(--ink-muted);font-weight:600}.banner{margin-top:16px;padding:14px 16px;border-radius:14px;border:1px solid rgba(179,58,58,.3);background:#b33a3a14;display:flex;justify-content:space-between;gap:12px;align-items:center}.banner--success{border-color:#1b5f5066;background:#1b5f5014}.banner__title{margin:0 0 4px;font-weight:600}.banner__body{margin:0;font-size:13px;color:var(--ink-muted)}.banner__actions{flex-shrink:0}.chip{border:1px solid var(--border);background:#fff;padding:6px 12px;border-radius:999px;font-size:13px;cursor:pointer}.chip--active{background:var(--accent-dark);color:#fff;border-color:#1b5f5099}.problem{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:clamp(20px,2.4vw,30px);box-shadow:var(--shadow);display:flex;flex-direction:column;gap:20px}.problem__header,.problem__footer{display:flex;justify-content:space-between;align-items:flex-start;gap:18px}.problem__eyebrow{margin:0 0 6px;font-size:var(--font-meta);text-transform:uppercase;letter-spacing:.12em;color:var(--ink-muted)}.problem__title{margin:0;font-size:var(--font-h2);font-family:var(--font-display-family)}.problem__meta{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-start}.problem__footer-actions{display:flex;gap:10px;flex-wrap:wrap}.sequence{display:grid;grid-template-columns:repeat(auto-fit,minmax(72px,1fr));gap:12px;padding:16px;border-radius:18px;border:1px solid var(--border);background:linear-gradient(180deg,#ffffffb8,#f3efe8b8)}.term{border:1px solid var(--border);border-radius:12px;padding:18px 10px;text-align:center;font-weight:600;background:var(--surface-tint)}.term--empty{border-style:dashed;color:var(--accent);background:#f7fff9}.answer label{display:block;font-size:var(--font-meta);margin-bottom:8px;color:var(--ink-muted)}.answer{display:grid;gap:12px}.answer__row{display:flex;gap:12px;align-items:center}.answer input{flex:1;padding:14px 16px;border-radius:12px;border:1px solid var(--border);font-size:16px;font-family:"Noto Serif KR",serif}.choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.choice{border:1px solid var(--border);border-radius:12px;padding:14px;background:#fff;cursor:pointer;font-weight:600;transition:transform .2s ease,box-shadow .2s ease}.choice:hover{transform:translateY(-1px);box-shadow:0 10px 18px #1112111f}.ncs-board__stem{padding:20px}.ncs-board__stem p{margin:0;font-size:clamp(18px,1.6vw,24px);line-height:1.7}.ncs-choice{display:grid;grid-template-columns:auto 1fr;align-items:flex-start;gap:12px;text-align:left;line-height:1.6}.ncs-choice__index{width:28px;height:28px;border-radius:999px;background:var(--surface-tint);border:1px solid var(--border);display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;color:var(--accent-dark)}.ncs-board__list{margin:8px 0 0;padding-left:18px}.ncs-board__list li+li{margin-top:6px}.result{margin-top:10px;font-size:13px;color:var(--ink-muted);min-height:20px;display:flex;align-items:center;gap:8px}.result__icon{width:20px;height:20px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;font-size:12px;background:var(--surface-tint);border:1px solid var(--border)}.result--correct{color:var(--accent-dark)}.result--wrong,.result--invalid{color:#b33a3a}.hint{margin-top:6px;font-size:13px;color:var(--accent-dark)}.explain{margin-top:14px;padding:14px;border-radius:12px;background:var(--surface-tint);border:1px solid var(--border)}.release-strip{display:grid;gap:16px;padding:18px 20px;border:1px solid var(--border);border-radius:18px;background:#ffffffe0;box-shadow:0 18px 42px #0c1c2814}.release-strip__header{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px}.release-strip__copy{display:grid;gap:6px}.release-strip__title{margin:0;font-family:var(--font-display-family);font-size:clamp(24px,2.1vw,34px);line-height:1.02}.release-strip__body{margin-bottom:0}.release-strip__metrics{grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}.release-strip__packages{display:flex;flex-wrap:wrap;gap:8px}.release-strip__error{margin-top:4px}.explain h3{margin:0 0 8px;font-size:16px}.explain ol{margin:0;padding-left:18px}.difficulty{margin-top:16px;padding:16px;border-radius:14px;border:1px solid var(--border);background:var(--surface-tint)}.difficulty__header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.difficulty__header h3{margin:0;font-size:16px}.difficulty__grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.difficulty__item{display:flex;justify-content:space-between;align-items:center;padding:8px 10px;border-radius:10px;background:#fff;border:1px solid var(--border);font-size:13px}.difficulty__label{color:var(--ink-muted)}.difficulty__value{font-weight:600}.flowchart{display:grid;place-items:center;background:var(--surface-tint);border-radius:16px;border:1px solid var(--border);padding:16px;margin:16px 0;overflow-x:auto;overscroll-behavior-x:contain}.flowchart__meta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:12px}.flowchart svg{display:block;width:min(100%,400px);max-width:100%;height:auto;flex:0 0 auto}.flowchart text{font-family:var(--font-body-family);font-size:14px;fill:var(--ink)}.btn{border:none;border-radius:999px;padding:12px 18px;font-weight:600;font-family:var(--font-body-family);cursor:pointer;transition:transform .2s ease,box-shadow .2s ease}.btn--primary{background:var(--accent);color:#fff;box-shadow:0 12px 24px #1b5f5040}.btn--ghost{background:#fff;border:1px solid var(--border);color:var(--ink)}.btn--block{width:100%}.btn:hover{transform:translateY(-1px)}:where(a,button,input,select,textarea,summary,[role=button]):focus-visible{outline:2px solid rgba(27,95,80,.9);outline-offset:3px;box-shadow:0 0 0 4px #d8efe6e6}.nav__link:focus-visible,.brand--link:focus-visible{border-radius:999px}.modal{position:fixed;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;z-index:10}.modal__backdrop{position:absolute;top:0;right:0;bottom:0;left:0;background:#0c0c0c66;border:0;padding:0;-webkit-appearance:none;-moz-appearance:none;appearance:none;cursor:pointer}.modal__panel{position:relative;background:#fff;padding:24px;border-radius:16px;width:min(520px,90vw);box-shadow:var(--shadow);z-index:1}.modal__panel:focus{outline:2px solid rgba(27,95,80,.32);outline-offset:2px}.modal__header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.modal__grid{display:grid;gap:12px;margin-top:12px}.modal__item{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:12px;border:1px solid var(--border);background:var(--surface-tint)}kbd{display:inline-flex;align-items:center;justify-content:center;min-width:28px;padding:4px 10px;border-radius:8px;border:1px solid var(--border);background:#f4f1eb;font-weight:600}.attempts{display:grid;gap:10px;margin-top:12px}.attempts__row{display:grid;grid-template-columns:24px minmax(0,1fr) auto;align-items:center;gap:10px;padding:8px 10px;border-radius:10px;border:1px solid var(--border);background:var(--surface-tint);font-size:13px}.attempts__status{width:20px;height:20px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;font-weight:600;background:#fff;border:1px solid var(--border)}.attempts__status.ok{color:var(--accent-dark);border-color:#1b5f5066}.attempts__status.bad{color:#b33a3a;border-color:#b33a3a66}.attempts__label{font-weight:600}.attempts__meta{color:var(--ink-muted);white-space:nowrap}.attempts__empty{margin:0;font-size:13px;color:var(--ink-muted)}.preset-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px}.preset-form{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:center}.preset-input{border:1px solid var(--border);border-radius:12px;padding:12px 14px;font-size:14px;font-family:var(--font-body-family);background:#fff}.preset-list{display:grid;gap:10px;margin-top:12px}.preset-item{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 12px;border-radius:12px;border:1px solid var(--border);background:var(--surface-tint)}.preset-name{border:none;background:transparent;font-weight:600;cursor:pointer;text-align:left;color:var(--ink)}.preset-actions{display:flex;gap:8px}.preset-empty{margin:12px 0 0;font-size:13px;color:var(--ink-muted)}.progress-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}.progress-list{display:grid;gap:10px;margin-top:12px}.progress-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 12px;border-radius:12px;border:1px solid var(--border);background:var(--surface-tint);font-size:13px}.progress-item__label{font-weight:600}.progress-muted{margin:4px 0 0;font-size:12px;color:var(--ink-muted)}.trend-grid{display:grid;gap:12px;margin-top:12px}.trend{padding:10px 12px;border-radius:12px;border:1px solid var(--border);background:var(--surface-tint)}.prose{max-width:70ch;line-height:1.75;color:var(--ink-muted)}.prose h1,.prose h2,.prose h3{font-family:var(--font-display-family);color:var(--ink);line-height:1.15}.prose p{margin:0}.prose p+p{margin-top:12px}.divider{width:100%;height:1px;background:var(--border)}.flow{display:grid;gap:16px}.flow__head{display:flex;justify-content:space-between;gap:12px;align-items:center}.flow__body{display:grid;gap:12px}.trend__label{margin:0 0 8px;font-size:12px;color:var(--ink-muted)}.trend__chart{width:100%;height:56px}.trend__chart path{fill:none;stroke:var(--accent);stroke-width:2}@media (max-width: 1120px){.hub-strip,.hero,.types-hero,.train,.split,.train-split{grid-template-columns:1fr}.train__left,.train__right{min-width:0}.home-route-list{grid-template-columns:1fr}}@media (max-width: 1024px){.topbar{grid-template-columns:1fr;justify-items:start;padding:18px var(--content-x) 14px;gap:16px}.hub-strip{padding:0 var(--content-x) 18px}.hub-strip__links{min-width:0;width:100%}.topbar__actions{width:100%;flex-wrap:wrap;gap:10px}.btn{padding:11px 16px}}@media (max-width: 768px){.content{padding-top:28px;padding-bottom:56px}.brand{gap:12px}.brand__eyebrow{font-size:10px}.brand__title{font-size:17px}.brand__subtitle{font-size:11px}.nav{flex-wrap:wrap;gap:8px;justify-content:flex-start}.nav__link{padding:7px 12px;font-size:14px}.hub-strip__title{font-size:clamp(26px,7vw,40px)}.hero__facts,.types-flow,.panel__row,.train__stats,.train__bank,.kbd-row,.choices,.difficulty__grid,.grid{grid-template-columns:1fr}.grid>article:first-child{grid-column:auto}.sequence{grid-template-columns:repeat(auto-fit,minmax(64px,1fr))}.section__header,.problem__header,.problem__footer,.train__hero,.difficulty__header,.release-strip__header,.panel__header,.modal__header,.banner{flex-direction:column;align-items:flex-start}.section__actions,.problem__meta,.train-route__actions,.banner__actions{justify-content:flex-start}.hero__actions,.topbar__actions,.train__cta,.problem__footer-actions{width:100%}.home-rail,.home-callout,.types-hero__rail{border-left:0}.train-route{padding-top:12px}.home-rail,.types-hero__rail{padding-left:0;border-top:1px solid var(--border);padding-top:18px}.home-callout{flex-direction:column;align-items:flex-start}.btn{width:100%;justify-content:center}.card,.surface{padding:16px}.flowchart{padding:12px}.flowchart svg{width:100%;min-width:280px}.answer__row{flex-direction:column;align-items:stretch}.choices{grid-template-columns:1fr}.modal__panel{width:min(94vw,520px);padding:20px}.preset-form{grid-template-columns:1fr}.attempts__row{grid-template-columns:24px minmax(0,1fr);grid-template-areas:"status label" "status meta"}.attempts__status{grid-area:status}.attempts__label{grid-area:label}.attempts__meta{grid-area:meta}.preset-actions{flex-wrap:wrap}.section__title,.hero__title,.train-route__title{font-size:clamp(30px,8vw,42px)}}@media (max-width: 390px){.content{padding-left:16px;padding-right:16px}.topbar,.hub-strip{padding-left:14px;padding-right:14px}.hub-strip__links{grid-template-columns:1fr}.home-route{flex-direction:column;align-items:flex-start}.type-index-item{grid-template-columns:1fr;align-items:flex-start}.type-index-item__actions{width:100%;justify-content:flex-start}.brand__title{font-size:17px}.brand__subtitle{line-height:1.35}.section__header,.problem__header,.problem__footer,.train__hero,.difficulty__header,.panel__header,.modal__header,.banner{gap:10px}}