:root{--primitive-white:#ffffff;--primitive-black:#000000;--primitive-gray-950:#111111;--primitive-gray-900:#333333;--primitive-gray-800:#3e2723;--primitive-gray-700:#555555;--primitive-gray-600:#666666;--primitive-gray-500:#777777;--primitive-gray-450:#999999;--primitive-gray-400:#9e9e9e;--primitive-gray-350:#aaaaaa;--primitive-gray-300:#bbbbbb;--primitive-gray-250:#cccccc;--primitive-gray-200:#dddddd;--primitive-gray-150:#eeeeee;--primitive-gray-100:#f5f5f5;--primitive-gray-50:#fafafa;--primitive-gray-25:#fcfcfc;--primitive-cyan-400:#18ffff;--primitive-bluegray-200:#b0bec5;--primitive-bluegray-100:#d9dfe3;--primitive-bluegray-50:#eceff1;--primitive-black-a02:rgba(0,0,0,0.02);--primitive-black-a04:rgba(0,0,0,0.04);--primitive-black-a045:rgba(0,0,0,0.045);--primitive-black-a05:rgba(0,0,0,0.05);--primitive-black-a06:rgba(0,0,0,0.06);--primitive-black-a08:rgba(0,0,0,0.08);--primitive-black-a12:rgba(0,0,0,0.12);--primitive-black-a20:rgba(0,0,0,0.2);--primitive-black-a35:rgba(0,0,0,0.35);--primitive-black-a40:rgba(0,0,0,0.4);--primitive-white-a72:rgba(255,255,255,0.72);--primitive-cyan-a00:rgba(24,255,255,0);--primitive-cyan-a10:rgba(24,255,255,0.1);--primitive-cyan-a20:rgba(24,255,255,0.2);--primitive-cyan-a100:rgba(24,255,255,1);--primitive-muted-a50:rgba(119,119,119,0.5);--primitive-gray-350-a50:rgba(170,170,170,0.5);--primitive-blue-a15:rgba(179,229,252,0.15);--primitive-bluegray-50-a30:#eceff14d;--primitive-bluegray-100-a30:#cfd8dc4d;--primitive-bluegray-200-a30:#b0bec54d;--primitive-bluegray-300-a30:#90a4ae4d;--container-max:1440px;--content-max:720px;--sidebar-width:240px;--container-padding:32px;--header-height:88px;--footer-band-height:calc(3 * var(--header-height));--hero-height:440px;--font-sans:"Pretendard",system-ui,sans-serif;--font-family-sans:var(--font-sans);--font-family-serif:"Bodoni Moda",Bodoni,serif;--font-family-icon:"Material Symbols Outlined";--font-weight-regular:400;--font-weight-medium:500;--font-weight-semibold:600;--font-weight-bold:700;--font-weight-extrabold:800;--font-weight-black:900;--font-size-11:11px;--font-size-12:12px;--font-size-13:13px;--font-size-14:14px;--font-size-16:16px;--font-size-18:18px;--font-size-20:20px;--font-size-22:22px;--font-size-24:24px;--font-size-28:28px;--font-size-32:32px;--font-size-36:36px;--font-size-40:40px;--font-size-42:42px;--font-size-56:56px;--font-size-60:60px;--font-size-64:64px;--line-height-1:1;--line-height-tight:1.2;--line-height-title:1.25;--line-height-normal:1.4;--line-height-reading:1.6;--line-height-body:1.7;--line-height-display-hero:0.95;--line-height-title-emphasis:1.15;--line-height-title-compact:1.3;--body-size:var(--font-size-16);--body-height:1.7;--body-color:var(--primitive-gray-900);--display-size:var(--type-heading-h1-size);--h1-size:var(--type-heading-h1-size);--h1-weight:var(--type-heading-h1-weight);--h1-height:var(--type-display-line-height);--h2-size:var(--type-heading-h2-size);--h2-weight:var(--type-heading-h2-weight);--h3-size:var(--type-heading-h3-size);--h3-weight:var(--type-heading-h3-weight);--paragraph-margin:var(--space-16);--summary-size:var(--type-summary-size);--summary-color:var(--primitive-gray-700);--color-bg:var(--primitive-white);--color-text:var(--primitive-gray-950);--color-text-secondary:var(--primitive-gray-600);--color-text-muted:var(--primitive-gray-500);--color-text-subtle:var(--primitive-gray-450);--color-border:var(--primitive-gray-200);--color-border-card:var(--color-border);--color-border-frame:var(--primitive-gray-250);--color-hover-bg:var(--primitive-gray-150);--color-card-hover:var(--color-hover-bg);--color-key:var(--primitive-cyan-400);--color-black:var(--primitive-black);--color-white:var(--primitive-white);--color-surface-canvas:var(--primitive-gray-25);--color-surface-soft:var(--primitive-gray-50);--color-surface-muted:var(--primitive-gray-100);--color-neutral-eee:var(--primitive-gray-150);--color-neutral-ccc:var(--primitive-gray-250);--color-neutral-ddd:var(--primitive-gray-200);--color-neutral-bbb:var(--primitive-gray-300);--color-neutral-aaa:var(--primitive-gray-350);--color-neutral-999:var(--primitive-gray-450);--color-neutral-9e:var(--primitive-gray-400);--color-bluegray-200:var(--primitive-bluegray-200);--color-bluegray-50:var(--primitive-bluegray-50);--color-editorial-brown:var(--primitive-gray-800);--color-overlay-subtle:var(--primitive-black-a02);--color-overlay-soft:var(--primitive-black-a05);--color-overlay-hover:var(--primitive-black-a06);--color-overlay-elevated:var(--primitive-black-a08);--color-overlay-line:var(--primitive-black-a12);--color-overlay-pattern:var(--primitive-black-a20);--color-overlay-strong:var(--primitive-black-a35);--color-overlay-scrim:var(--primitive-black-a40);--color-header-glass:var(--primitive-white-a72);--color-key-transparent:var(--primitive-cyan-a00);--color-key-soft:var(--primitive-cyan-a10);--color-key-muted:var(--primitive-cyan-a20);--color-key-opaque:var(--primitive-cyan-a100);--color-text-muted-alpha:var(--primitive-muted-a50);--color-neutral-aaa-alpha:var(--primitive-gray-350-a50);--color-blue-soft:var(--primitive-blue-a15);--color-editorial-surface-1:var(--primitive-bluegray-50-a30);--color-editorial-surface-2:var(--primitive-bluegray-100-a30);--color-editorial-surface-3:var(--primitive-bluegray-200-a30);--color-editorial-surface-4:var(--primitive-bluegray-300-a30);--motion-key:var(--color-key);--motion-bg:var(--color-surface-canvas);--motion-stroke:var(--color-neutral-999);--motion-muted:var(--color-neutral-ccc);--motion-neutral:var(--color-neutral-eee);--motion-black:var(--color-black);--motion-white:var(--color-white);--motion-ink:var(--color-text);--motion-gray-dot:var(--color-neutral-9e);--motion-surface:var(--color-surface-soft);--motion-divider:var(--color-neutral-ddd);--motion-bluegray-50:var(--color-bluegray-50);--motion-surface-shade:var(--primitive-bluegray-100);--space-4:4px;--space-8:8px;--space-12:12px;--space-16:16px;--space-24:24px;--space-32:32px;--space-48:48px;--space-64:64px;--radius-none:0;--radius-6:6px;--radius-8:8px;--radius-12:12px;--radius-full:999px;--radius-circle:50%;--border-width-hairline:0.5px;--border-width-thin:1px;--border-width-accent:2px;--border-width-strong:4px;--shadow-drawer-inline:-4px 0 24px var(--color-overlay-elevated);--shadow-drawer-block:0 -4px 24px var(--color-overlay-elevated);--shadow-card-raised:0 6px 20px var(--color-overlay-hover);--shadow-focus-ring:0 0 0 var(--focus-ring-width) var(--focus-ring-color);--shadow-inset-thin:inset 0 0 0 var(--border-width-thin) var(--color-black);--shadow-inset-strong:inset 0 0 0 var(--border-width-strong) var(--color-black);--duration-instant:50ms;--duration-fast:120ms;--duration-base:150ms;--duration-slow:200ms;--duration-deliberate:250ms;--duration-reduced:1ms;--ease-standard:ease;--ease-enter:ease-out;--ease-emphasized:ease-in-out;--z-behind:-1;--z-base:0;--z-raised:1;--z-content:2;--z-decorative:3;--z-overlay:5;--z-accent:6;--z-local-popover:10;--z-dropdown:30;--z-sticky:40;--z-floating:85;--z-header:100;--z-header-backdrop:110;--z-header-drawer:111;--z-contents-backdrop:120;--z-contents-drawer:121;--card-padding:var(--space-24);--card-radius:var(--radius-12);--button-padding:var(--space-12) var(--space-16);--button-radius:var(--radius-8);--control-height-md:40px;--control-height-lg:60px;--control-target-min:44px;--control-line-height-default:38px;--control-line-height-emphasis:36px;--control-line-height-results:52px;--control-border-default:var(--border-width-thin);--control-border-emphasis:var(--border-width-accent);--control-border-strong:var(--border-width-strong);--focus-ring-width:var(--border-width-accent);--focus-ring-offset:var(--space-4);--focus-ring-color:var(--color-text);--sidebar-font-size:var(--font-size-14);--sidebar-line-height:var(--line-height-reading);--breadcrumb-size:var(--font-size-14);--breadcrumb-color:var(--color-text-muted);--type-lnb-section-toggle-size:var(--font-size-13);--type-hub-featured-image-icon-size:var(--font-size-32);--type-hub-hero-title-size:var(--font-size-64);--type-featured-popular-top-icon-size:var(--font-size-32);--type-curriculum-card-index-size:var(--font-size-60);--type-curriculum-card-hover-icon-size:var(--font-size-40);--type-articles-grid-icon-size:var(--font-size-40);--type-articles-category-icon-size:var(--font-size-64);--type-articles-thumb-top-icon-size:var(--font-size-32);--type-articles-list-icon-size:var(--font-size-40);--type-articles-list-icon-inner-size:var(--font-size-32);--type-curriculum-track-index-size:var(--font-size-60);--type-curriculum-track-hover-icon-size:var(--font-size-40);--type-hub-first-card-title-size:var(--font-size-32);--type-hub-quote-en-tablet-size:var(--font-size-42);--type-article-page-title-tablet-size:var(--font-size-40);--type-body-size:var(--font-size-16);--type-summary-size:var(--font-size-18);--type-heading-h1-size:var(--font-size-56);--type-heading-h2-size:var(--font-size-28);--type-heading-h3-size:var(--font-size-22);--type-heading-h1-weight:var(--font-weight-bold);--type-heading-h2-weight:var(--font-weight-bold);--type-heading-h3-weight:var(--font-weight-semibold);--type-icon-line-height:var(--line-height-1);--type-body-copy-line-height:var(--body-height);--type-sidebar-nav-line-height:var(--sidebar-line-height);--type-body-reading-line-height:var(--line-height-reading);--type-ui-label-line-height:var(--line-height-normal);--type-heading-tight-line-height:var(--line-height-tight);--type-heading-title-line-height:var(--line-height-title);--type-display-line-height:var(--line-height-tight);--type-section-title-line-height:var(--line-height-title);--type-section-subtitle-line-height:var(--line-height-tight);--type-hub-hero-title-line-height:var(--line-height-display-hero);--type-hub-first-card-title-line-height:var(--line-height-title-emphasis);--type-article-summary-compact-line-height:var(--line-height-title-compact);--divider-dot-color:var(--color-neutral-ddd);--divider-dot-size:2px;--divider-gap:var(--space-4);--divider-height:1px;--divider-margin:40px 0}.page-stack{gap:var(--space-24)}.page-stack,.section-block{display:flex;flex-direction:column}.section-block{gap:var(--space-16)}.section-header{display:flex;flex-direction:column;gap:var(--space-8)}.eyebrow{margin:0;font-size:var(--font-size-12);letter-spacing:.08em;text-transform:uppercase;color:var(--color-text-secondary)}.concept-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));grid-gap:var(--space-16);gap:var(--space-16)}.eyebrow-row{display:inline-flex;align-items:center;gap:var(--space-8);font-size:var(--font-size-12);color:var(--color-text-muted)}.article-title-section{display:flex;flex-direction:column;gap:var(--space-8)}.article-body-root{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.concept-card{flex-direction:column;padding:var(--space-16);border:var(--border-width-thin) solid var(--color-border-frame);border-radius:var(--card-radius);text-decoration:none;color:inherit;background:var(--color-bg)}.concept-card,.concept-card-top{display:flex;gap:var(--space-12)}.concept-card-top{align-items:center;justify-content:space-between}.card-index{font-size:var(--font-size-12);color:var(--color-text-muted)}.card-footer{display:flex;align-items:center;justify-content:space-between;gap:var(--space-12)}.card-arrow{color:var(--color-text-secondary)}.article-meta-card{border:var(--border-width-thin) solid var(--color-border-frame);border-radius:var(--card-radius);padding:var(--space-16);display:flex;flex-direction:column;gap:var(--space-8);text-decoration:none;color:inherit}.article-meta-card-category,.article-meta-card-type{font-size:var(--font-size-12);color:var(--color-text-muted)}.article-meta-card-title{margin:0;font-size:var(--font-size-16);color:var(--color-text)}.articles-by-type,.articles-list{display:flex;flex-direction:column;gap:var(--space-16)}.articles-card-list{margin:0;padding:0;list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));grid-gap:var(--space-12);gap:var(--space-12)}.articles-empty{color:var(--color-text-secondary)}.articles-type-heading{margin:0}.articles-search-form{display:flex;flex-direction:column;gap:var(--space-8)}.content-type-filter{display:inline-flex;align-items:center;gap:var(--space-8)}.content-type-tab{text-decoration:none;color:var(--color-text-secondary);padding:var(--space-4) var(--space-12);border-radius:var(--radius-6);font-size:var(--sidebar-font-size);transition:background-color var(--duration-base) var(--ease-standard),color var(--duration-base) var(--ease-standard)}.content-type-tab:hover{color:var(--color-text)}.content-type-tab.is-active{color:var(--color-text);font-weight:var(--font-weight-extrabold);background:var(--color-overlay-hover)}.academy-layout{display:grid;grid-template-columns:minmax(220px,280px) minmax(0,1fr);grid-gap:var(--space-24);gap:var(--space-24)}.academy-content,.academy-sidebar{min-width:0}.academy-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));grid-gap:var(--space-16);gap:var(--space-16)}.academy-card{border:var(--border-width-thin) solid var(--color-border-frame);border-radius:var(--card-radius);padding:var(--space-16);display:flex;flex-direction:column;gap:var(--space-12);text-decoration:none;color:inherit}.academy-meta{font-size:var(--font-size-12);color:var(--color-text-secondary)}.search-lnb-filters{display:flex;flex-direction:column;gap:var(--space-8)}.search-lnb-option{display:flex;align-items:center;gap:var(--space-8);margin:0;padding:var(--space-8) 0 var(--space-8) var(--space-12);font-size:var(--sidebar-font-size);line-height:var(--type-sidebar-nav-line-height);color:var(--color-text-secondary);cursor:pointer;transition:background-color var(--duration-base) var(--ease-standard),color var(--duration-base) var(--ease-standard)}.search-lnb-option:hover{color:var(--color-text)}.search-lnb-option.is-active{color:var(--color-text);background-color:var(--color-overlay-soft)}.search-lnb-option input[type=radio].search-lnb-option-radio{flex-shrink:0;width:14px;height:14px;margin:0;-moz-appearance:none;appearance:none;-webkit-appearance:none;border:var(--border-width-accent) solid var(--color-overlay-strong);border-radius:var(--radius-circle);background-color:var(--color-bg);background-image:none;background-repeat:no-repeat;background-position:50%;background-size:auto;opacity:.55;cursor:pointer;transition:border-color var(--duration-base) var(--ease-standard),opacity var(--duration-base) var(--ease-standard),background var(--duration-base) var(--ease-standard)}.search-lnb-option input[type=radio].search-lnb-option-radio:focus-visible{outline:2px solid var(--color-key);outline-offset:2px}.search-lnb-option input[type=radio].search-lnb-option-radio.is-active{opacity:1;border-color:var(--color-text);background-color:var(--color-bg);background-image:radial-gradient(circle at center,var(--color-text) 0,var(--color-text) 42%,transparent 43%)}.search-lnb-option-text{flex:1 1}.search-lnb-option.is-active .search-lnb-option-text{color:var(--color-text);font-weight:var(--font-weight-extrabold)}.search-lnb-option.is-active .search-lnb-option-text:after{content:"";display:inline-block;width:4px;height:4px;margin-left:var(--space-8);vertical-align:middle;border-radius:var(--radius-circle);background:var(--color-key)}