@import url('/tokens/fonts.css');
@import url('/tokens/colors.css');
@import url('/tokens/typography.css');
@import url('/tokens/spacing.css');

:root { --ink:var(--text-strong); --muted:var(--text-muted); --line:var(--border-default); --paper:var(--surface-subtle); --green:var(--brand); --lime:var(--blue-100); --white:var(--gray-0); font-synthesis:none; }
*,*::before,*::after { box-sizing:border-box; }
html { scroll-behavior:smooth; scroll-padding-top:96px; }
body { margin:0; font:var(--type-body); color:var(--text-body); background:var(--surface-page); letter-spacing:var(--ls-body); word-break:keep-all; -webkit-font-smoothing:antialiased; }
button,input,textarea,select { font:inherit; color:inherit; }
button { cursor:pointer; border:0; } button:disabled { cursor:not-allowed; opacity:.55; }
a { color:inherit; text-decoration:none; } a:hover { text-underline-offset:4px; }
img { max-width:100%; display:block; } svg { flex-shrink:0; vertical-align:middle; }
h1,h2,h3,h4 { font-family:var(--font-display); font-weight:500; letter-spacing:-.02em; color:var(--text-strong); line-height:1.4; margin:0; }
p { margin:0; } input,select,textarea { min-width:0; } select { cursor:pointer; } code,pre,kbd { font-family:var(--font-mono); }
button,a,input,select,textarea { -webkit-tap-highlight-color:transparent; }
:focus-visible { outline:2px solid var(--brand); outline-offset:3px; box-shadow:var(--focus-ring); }
::selection { background:var(--blue-100); color:var(--navy-900); }
[hidden] { display:none!important; }
.container { width:min(var(--container),calc(100% - 48px)); margin-inline:auto; }
.muted { color:var(--text-muted); }.mobile-only,.small-only { display:none; }
.eyebrow { display:block; font:500 12px/1.5 var(--font-mono); letter-spacing:.08em; color:var(--brand); margin-bottom:16px; }
.btn { display:inline-flex; align-items:center; justify-content:center; gap:10px; min-height:44px; padding:10px 20px; border:1px solid transparent; border-radius:8px; font:700 14px/1.5 var(--font-body); transition:background var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out),transform var(--dur-fast) var(--ease-out); white-space:nowrap; text-decoration:none; }
.btn:hover { text-decoration:none; }.btn:active { transform:scale(.98); }
.btn-primary,.btn-dark { background:var(--brand); color:var(--text-on-brand); }.btn-primary:hover,.btn-dark:hover { background:var(--brand-hover); }.btn-primary:active,.btn-dark:active { background:var(--brand-press); }
.btn-secondary { background:var(--brand-subtle); color:var(--blue-700); }.btn-secondary:hover { background:var(--brand-subtle-hover); }
.btn-outline { background:var(--gray-0); color:var(--text-body); border-color:var(--gray-300); }.btn-outline:hover { background:var(--gray-50); border-color:var(--blue-200); }
.btn-inverse { background:var(--gray-0); color:var(--brand); }.btn-inverse:hover { background:var(--blue-50); }
.btn-hero-outline { background:var(--navy-900); border-color:var(--gray-500); color:var(--text-inverse); }.btn-hero-outline:hover { background:var(--navy-800); border-color:var(--blue-300); }
.btn-sm { min-height:36px; padding:7px 16px; font-size:14px; }.btn-lg { min-height:52px; padding:14px 24px; }
.text-link { display:inline-flex; align-items:center; gap:12px; font-size:14px; font-weight:700; color:var(--brand); white-space:nowrap; }.text-link:hover { text-decoration:underline; }
.panel { background:var(--surface-card); border:1px solid var(--border-default); border-radius:16px; padding:24px; }
.chip,.small-tag { display:inline-flex; align-items:center; padding:3px 8px; border-radius:4px; font-size:12px; font-weight:700; line-height:1.5; color:var(--blue-700); background:var(--blue-50); }
.page-heading { margin-bottom:32px; }.page-heading h1 { font-size:36px; }.page-heading p { margin-top:12px; color:var(--text-muted); }
.section-heading { display:flex; align-items:flex-end; justify-content:space-between; gap:24px; margin-bottom:40px; }.section-heading h2 { font-size:36px; }.section-heading p { color:var(--text-muted); font-size:16px; margin-top:16px; }.section-heading .text-link { margin-bottom:4px; }
.sample-caption { font-size:12px; color:var(--text-muted); margin-top:24px; text-align:right; }
.skip-link { position:fixed; top:-100px; left:16px; z-index:100; background:var(--brand); color:white; padding:12px 20px; border-radius:8px; }.skip-link:focus { top:12px; }
.toast { position:fixed; z-index:100; bottom:24px; left:50%; transform:translate(-50%,12px); max-width:calc(100% - 48px); width:max-content; padding:14px 24px; border-radius:12px; background:var(--navy-900); color:white; font-size:14px; opacity:0; visibility:hidden; transition:opacity var(--dur-base) var(--ease-out),transform var(--dur-base) var(--ease-out); box-shadow:var(--shadow-md); text-align:center; }.toast.visible { opacity:1; visibility:visible; transform:translate(-50%,0); }

/* Navigation */
.site-header { height:72px; position:sticky; top:0; z-index:40; background:rgba(255,255,255,.92); backdrop-filter:blur(12px); border-bottom:1px solid var(--gray-200); }
.nav-inner { height:100%; display:flex; align-items:center; gap:64px; }.brand { display:inline-flex; gap:10px; align-items:center; flex-shrink:0; }.brand>img { width:44px; height:44px; object-fit:contain; }.brand-type { display:flex; flex-direction:column; gap:5px; }.brand-name { color:var(--text-strong); font:500 23px/1.05 var(--font-display); letter-spacing:-.02em; }.brand-name>span { color:var(--brand); }.brand-type small { color:var(--text-muted); font:500 9px/1 var(--font-mono); letter-spacing:.18em; }
.desktop-nav { display:flex; align-items:center; gap:32px; height:100%; font-size:14px; font-weight:500; }.desktop-nav>a { display:flex; align-items:center; gap:6px; position:relative; height:100%; }.desktop-nav>a:hover { color:var(--brand); }.desktop-nav>a.active { color:var(--brand); }.desktop-nav>a.active:after { content:''; height:2px; background:var(--brand); position:absolute; left:0; right:0; bottom:0; }.new-dot { color:var(--brand); font:500 9px/1 var(--font-mono); margin-top:-8px; }
.nav-actions { display:flex; align-items:center; gap:20px; margin-left:auto; font-size:14px; }.classroom-link { display:inline-flex; align-items:center; gap:8px; min-height:44px; }.classroom-link:hover,.nav-login:hover { color:var(--brand); text-decoration:underline; }.profile-button { display:flex; align-items:center; gap:8px; padding:0; background:none; font-size:14px; }.avatar-tiny { width:32px; height:32px; display:grid; place-items:center; background:var(--blue-50); color:var(--blue-700); border-radius:8px; font-weight:700; }.mobile-menu-button { display:none; width:44px; height:44px; align-items:center; justify-content:center; background:none; border-radius:8px; }.mobile-menu { background:white; border-bottom:1px solid var(--line); padding:16px 24px 24px; display:grid; gap:4px; box-shadow:var(--shadow-md); }.mobile-menu a { display:block; padding:12px; border-radius:8px; }.mobile-menu a:hover { background:var(--blue-50); color:var(--brand); }

/* Main hero / code preview */
.hero { background:var(--navy-900); color:var(--text-inverse); padding:96px 0; }.hero-grid { display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1.02fr); gap:56px; align-items:center; }.hero-copy { min-width:0; }.hero-eyebrow { display:flex; gap:10px; align-items:center; font:500 12px/1.5 var(--font-mono); letter-spacing:.08em; color:var(--blue-300); margin-bottom:24px; }.hero-eyebrow>span { width:6px; height:6px; background:var(--brand); }
.hero h1 { color:white; font-size:56px; line-height:1.4; letter-spacing:-.02em; }.hero h1>span { color:var(--blue-300); }.hero-description { color:var(--text-inverse-muted); margin-top:24px; font-size:16px; line-height:1.85; }.hero-buttons { display:flex; gap:12px; margin-top:32px; }.hero-buttons .btn { padding-inline:20px; }.hero-note { margin-top:24px; font-size:12px; display:flex; align-items:center; gap:8px; color:var(--text-inverse-muted); }.hero-note>svg { color:var(--blue-300); }
.hero-visual { min-width:0; }.editor-window { background:var(--navy-800); border:1px solid var(--gray-600); border-radius:16px; overflow:hidden; }.editor-titlebar { display:flex; align-items:center; justify-content:space-between; gap:12px; height:44px; padding:0 20px; background:var(--navy-800); border-bottom:1px solid var(--gray-600); color:var(--text-inverse-muted); font:400 11px/1.5 var(--font-mono); }.window-dots { display:flex; gap:6px; }.window-dots i { height:7px; width:7px; border-radius:50%; background:var(--gray-500); }.editor-titlebar>svg { color:var(--gray-400); }.editor-tabs { display:flex; align-items:center; height:40px; gap:20px; padding-right:16px; color:var(--text-inverse-muted); font:400 11px/1.5 var(--font-mono); background:var(--navy-900); }.editor-tabs>span:first-child { align-self:stretch; display:flex; align-items:center; gap:6px; background:var(--navy-800); border-top:2px solid var(--blue-400); padding:0 16px; color:var(--blue-200); }.editor-live { margin-left:auto; display:flex; align-items:center; gap:6px; font-size:10px; }.editor-live>i { height:5px; width:5px; background:var(--success); border-radius:50%; }
.editor-content { display:flex; gap:20px; padding:24px 20px; font:400 12px/2 var(--font-mono); white-space:nowrap; color:var(--code-text); overflow:hidden; background:var(--navy-900); }.line-numbers { color:var(--code-comment); user-select:none; }.code-lines { min-width:0; }.code-comment { color:var(--code-comment); }.code-keyword { color:var(--code-keyword); }.code-string { color:var(--code-string); }
.editor-assistant { display:flex; align-items:center; gap:12px; padding:16px 20px; border-top:1px solid var(--gray-600); border-bottom:1px solid var(--gray-600); }.assistant-icon { width:36px; height:36px; border-radius:8px; color:var(--blue-200); background:var(--blue-900); display:grid; place-items:center; }.editor-assistant>div { flex:1; }.editor-assistant>div>span { color:var(--blue-300); font:500 10px/1.4 var(--font-mono); letter-spacing:.08em; }.editor-assistant p { font-size:12px; color:var(--code-text); margin-top:5px; }.editor-assistant>svg { color:var(--blue-300); }
.editor-output { margin:20px; background:var(--gray-0); border:1px solid var(--gray-200); border-radius:8px; overflow:hidden; }.output-heading { display:flex; align-items:center; justify-content:space-between; gap:12px; border-bottom:1px solid var(--gray-200); padding:9px 12px; font:400 9px/1.5 var(--font-mono); color:var(--text-muted); background:var(--gray-50); }.output-heading>span:first-child { display:flex; align-items:center; gap:6px; }.output-content { display:flex; align-items:center; gap:16px; padding:20px; }.output-mark { font:500 26px/1 var(--font-mono); color:var(--brand); background:var(--blue-50); border-radius:12px; width:64px; height:64px; display:grid; place-items:center; flex-shrink:0; }.output-content small { color:var(--brand); font:500 9px/1.5 var(--font-mono); letter-spacing:.06em; }.output-content h3 { font-size:18px; color:var(--text-strong); margin-top:5px; }.output-arrow { margin-left:auto; color:var(--brand); }.editor-status { display:flex; justify-content:space-between; gap:12px; padding:0 20px 14px; color:var(--text-inverse-muted); font:400 9px/1.5 var(--font-mono); }.editor-status>span:first-child { display:flex; align-items:center; gap:5px; }.editor-status svg { color:var(--success); }.visual-caption { display:flex; justify-content:space-between; gap:12px; font-size:11px; color:var(--text-inverse-muted); margin-top:16px; }.visual-caption>span:first-child { font:400 10px/1.6 var(--font-mono); letter-spacing:.06em; }
.trust-strip { border-bottom:1px solid var(--gray-200); }.trust-grid { display:grid; grid-template-columns:repeat(3,1fr); padding-block:32px; }.trust-grid>div { display:flex; align-items:center; justify-content:center; gap:20px; padding-inline:20px; }.trust-grid>div+div { border-left:1px solid var(--gray-200); }.trust-grid p { display:flex; flex-direction:column; gap:5px; }.trust-grid p strong { font-size:14px; font-weight:700; color:var(--text-strong); }.trust-grid p span { font-size:12px; color:var(--text-muted); }.trust-grid>div>svg { color:var(--brand); }.trust-number { font:500 32px/1 var(--font-display); color:var(--brand); }.trust-number>span { display:block; font:500 8px/1.5 var(--font-mono); letter-spacing:.1em; text-align:center; margin-top:4px; }

/* Shared course collection */
.category-section { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:24px; padding-top:40px; }.quick-category { display:flex; gap:14px; align-items:center; padding:16px; border:1px solid var(--gray-200); border-radius:12px; transition:background var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out); }.quick-category:hover { border-color:var(--blue-200); background:var(--gray-50); }.quick-icon { display:grid; place-items:center; width:44px; height:44px; background:var(--blue-50); color:var(--brand); border-radius:12px; flex-shrink:0; }.quick-category strong { display:block; font-size:14px; color:var(--text-strong); font-weight:700; }.quick-category small { display:block; font-size:12px; color:var(--text-muted); margin-top:4px; }.quick-category>svg { margin-left:auto; color:var(--gray-400); }
.popular-section { padding-top:96px; padding-bottom:96px; }.course-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:24px; }.course-card { background:var(--gray-0); border:1px solid var(--gray-200); border-radius:16px; overflow:hidden; min-width:0; transition:transform var(--dur-base) var(--ease-out),box-shadow var(--dur-base) var(--ease-out),border-color var(--dur-base) var(--ease-out); }.course-card:hover { transform:translateY(-2px); box-shadow:var(--shadow-lg); border-color:var(--blue-200); }.course-card-link { display:block; }.course-card-link:focus-visible { outline-offset:-4px; }
.course-art { height:232px; padding:24px 24px 0; background:var(--blue-50); color:var(--text-strong); overflow:hidden; position:relative; }.art-topline { display:flex; justify-content:space-between; gap:12px; font:500 9px/1.5 var(--font-mono); letter-spacing:.06em; color:var(--blue-700); margin-bottom:16px; }.art-topline>span:last-child { white-space:nowrap; color:var(--text-muted); }.course-art>strong { display:block; font:500 23px/1.4 var(--font-display); letter-spacing:-.02em; }.art-subtitle { display:block; color:var(--text-muted); margin-top:6px; font-size:12px; }.art-terminal { margin-top:20px; background:var(--gray-0); border:1px solid var(--blue-200); border-radius:8px 8px 0 0; overflow:hidden; }.art-terminal-header { display:flex; align-items:center; gap:6px; background:var(--blue-100); color:var(--blue-700); padding:7px 12px; font:400 9px/1.5 var(--font-mono); }.art-terminal-status { margin-left:auto; width:4px; height:4px; border-radius:50%; background:var(--brand); }.art-terminal-code { padding:9px 12px 12px; font:400 10px/1.85 var(--font-mono); color:var(--gray-700); }.art-terminal-code>span { display:block; white-space:nowrap; }.art-terminal-code i { font-style:normal; color:var(--gray-400); margin-right:12px; font-size:9px; }
.art-vibe,.art-ai { background:var(--navy-900); color:white; }.art-vibe .art-topline,.art-ai .art-topline { color:var(--blue-300); }.art-vibe .art-topline>span:last-child,.art-ai .art-topline>span:last-child,.art-vibe .art-subtitle,.art-ai .art-subtitle { color:var(--text-inverse-muted); }.art-vibe .art-terminal,.art-ai .art-terminal { background:var(--navy-900); border-color:var(--gray-600); }.art-vibe .art-terminal-header,.art-ai .art-terminal-header { background:var(--navy-800); color:var(--blue-200); }.art-vibe .art-terminal-code,.art-ai .art-terminal-code { color:var(--code-text); }.art-vibe .art-terminal-code i,.art-ai .art-terminal-code i { color:var(--code-comment); }.art-olympiad,.art-algorithm { background:var(--gray-100); }.art-olympiad .art-terminal,.art-algorithm .art-terminal { border-color:var(--gray-300); }.art-olympiad .art-terminal-header,.art-algorithm .art-terminal-header { background:var(--gray-200); color:var(--gray-700); }
.course-card-body { padding:24px; }.card-labels { display:flex; align-items:center; justify-content:space-between; gap:12px; margin-bottom:12px; }.course-category { font-size:12px; font-weight:700; color:var(--brand); }.small-tag { font-size:10px; }.course-card h3 { font-size:18px; min-height:52px; line-height:1.5; }.card-instructor { font-size:12px; color:var(--text-muted); margin-top:12px; }.card-rating { display:flex; align-items:center; gap:5px; font-size:12px; margin-top:16px; color:var(--text-muted); }.card-rating>svg { color:var(--brand); }.card-rating>b { color:var(--text-strong); }.card-rating .dot { margin:0 3px; }.card-price { display:flex; align-items:baseline; gap:8px; flex-wrap:wrap; margin-top:12px; }.card-price>strong { font-size:20px; color:var(--brand); }.card-price small { font-size:14px; }.card-price>b { font-size:20px; color:var(--text-strong); letter-spacing:-.02em; }.card-price>del { font-size:12px; color:var(--text-muted); }.card-meta { display:flex; align-items:center; gap:16px; margin-top:20px; padding-top:16px; border-top:1px solid var(--gray-200); font-size:12px; color:var(--text-muted); }.card-meta>span { display:flex; align-items:center; gap:6px; }

/* Home editorial sections */
.vibe-section { background:var(--gray-50); padding:96px 0; }.vibe-feature { display:grid; grid-template-columns:1fr 1.1fr; align-items:center; gap:96px; }.vibe-intro h2 { font-size:36px; }.vibe-intro p { font-size:16px; line-height:1.85; color:var(--text-muted); margin:24px 0; }.vibe-intro .text-link { margin-top:8px; }.idea-steps { display:grid; gap:16px; }.idea-steps article { display:flex; gap:20px; align-items:flex-start; padding:24px; background:var(--gray-0); border:1px solid var(--gray-200); border-radius:16px; }.step-index { display:grid; place-items:center; width:36px; height:36px; border-radius:8px; background:var(--blue-50); font:500 12px/1 var(--font-mono); color:var(--brand); flex-shrink:0; }.idea-steps h3 { font-size:18px; }.idea-steps p { color:var(--text-muted); font-size:14px; margin-top:8px; }.idea-steps article>svg { margin-left:auto; color:var(--brand); margin-top:5px; }
.instructors-section { padding-top:96px; padding-bottom:96px; }.quiet-label { font:400 11px/1.5 var(--font-mono); letter-spacing:.05em; color:var(--text-muted); }.mentor-grid { display:grid; grid-template-columns:1fr 1fr; gap:24px; }.mentor-card { display:flex; overflow:hidden; border:1px solid var(--gray-200); border-radius:16px; min-height:280px; }.mentor-art { width:38%; flex-shrink:0; padding:24px; background:var(--blue-50); position:relative; display:flex; flex-direction:column; justify-content:space-between; }.mentor-art>img { width:44px; height:44px; }.mentor-number { font:500 64px/1 var(--font-display); color:var(--brand); margin-top:24px; }.mentor-number small { display:block; font:500 8px/1.8 var(--font-mono); letter-spacing:.08em; margin-top:8px; }.mentor-art-label,.mentor-art-foot { font:400 9px/1.6 var(--font-mono); color:var(--blue-700); letter-spacing:.04em; }.mentor-director .mentor-art-label { margin-top:20px; }.mentor-body { padding:32px 24px; display:flex; flex-direction:column; }.mentor-body .eyebrow { font-size:10px; margin-bottom:12px; }.mentor-body h3 { font-size:22px; }.mentor-body p { font-size:14px; color:var(--text-muted); margin-top:16px; line-height:1.8; }.mentor-tags { display:flex; flex-wrap:wrap; gap:6px; margin-top:auto; padding-top:24px; }.mentor-tags>span { background:var(--gray-50); border:1px solid var(--gray-200); padding:3px 7px; border-radius:4px; font-size:11px; color:var(--text-muted); }.mentor-team { background:var(--gray-50); }.mentor-team .mentor-art-label,.mentor-art-foot { color:var(--text-muted); }.mentor-trophy { display:grid; place-items:center; flex:1; color:var(--brand); padding:24px 0; }
.reviews-section { background:var(--gray-50); padding:96px 0; }.demo-pill { display:inline-flex; align-items:center; border:1px solid var(--gray-300); padding:5px 10px; font-size:12px; color:var(--text-muted); border-radius:4px; white-space:nowrap; }.review-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:24px; }.review-card { display:flex; flex-direction:column; border:1px solid var(--gray-200); border-radius:16px; background:var(--gray-0); padding:32px 24px; }.review-stars { display:flex; gap:4px; color:var(--brand); }.review-card>p { font-size:16px; line-height:1.85; margin:24px 0 32px; }.review-person { display:flex; align-items:center; gap:12px; margin-top:auto; }.review-avatar { width:40px; height:40px; display:grid; place-items:center; border-radius:12px; background:var(--gray-100); color:var(--gray-600); font-weight:700; font-size:14px; }.review-person b { color:var(--text-strong); font-size:14px; }.review-person small { display:block; font-size:12px; color:var(--text-muted); margin-top:3px; }.review-sample { font-size:12px; color:var(--text-muted); margin-left:auto; }
.final-cta { margin-top:96px; margin-bottom:96px; border-radius:24px; padding:56px 64px; display:flex; align-items:center; justify-content:space-between; gap:32px; background:var(--brand); color:var(--text-on-brand); }.final-cta .eyebrow { color:var(--blue-100); }.final-cta h2 { color:white; font-size:36px; }.final-cta p { color:white; margin-top:16px; font-size:16px; }.final-cta .btn { flex-shrink:0; }

/* Catalog */
.catalog-intro { background:var(--gray-50); padding:64px 0; border-bottom:1px solid var(--gray-200); }.catalog-intro-grid { display:flex; align-items:center; justify-content:space-between; gap:48px; }.catalog-intro h1 { font-size:44px; }.catalog-intro p { font-size:16px; color:var(--text-muted); margin-top:20px; }.catalog-signature { display:flex; flex-direction:column; align-items:flex-end; text-align:right; }.catalog-signature>span { color:var(--brand); font:500 80px/1.3 var(--font-mono); letter-spacing:-.1em; }.catalog-signature b { font:500 12px/1.5 var(--font-mono); color:var(--brand); letter-spacing:.04em; }.catalog-signature small { display:block; font-size:12px; color:var(--text-muted); margin-top:8px; }
.catalog-content { padding-top:40px; padding-bottom:96px; }.catalog-top { display:flex; align-items:center; justify-content:space-between; gap:24px; padding-bottom:24px; border-bottom:1px solid var(--gray-200); }.category-tabs { display:flex; gap:8px; }.category-tab { display:inline-flex; align-items:center; justify-content:center; gap:6px; background:var(--gray-50); color:var(--text-body); padding:9px 16px; min-height:44px; border-radius:999px; font-size:14px; font-weight:500; white-space:nowrap; border:1px solid transparent; }.category-tab:hover { background:var(--gray-100); }.category-tab.selected { background:var(--brand); color:white; }.category-tab.selected:hover { background:var(--brand-hover); }
.search-field { display:flex; align-items:center; gap:10px; border:1px solid var(--gray-300); border-radius:8px; padding:10px 12px; min-height:44px; min-width:260px; color:var(--text-muted); }.search-field:focus-within { border-color:var(--brand); box-shadow:var(--focus-ring); }.search-field input { border:0; width:100%; background:none; font-size:14px; outline:none; box-shadow:none; }.search-field input::placeholder { color:var(--gray-500); }
.filter-bar { display:flex; align-items:center; justify-content:space-between; gap:20px; margin:24px 0 32px; }.filter-bar>div { display:flex; align-items:center; gap:12px; }.filter-bar label { font-size:14px; color:var(--text-muted); }.filter-bar select { min-height:40px; background:white; border:1px solid var(--gray-300); border-radius:8px; color:var(--text-body); padding:8px 10px; font-size:14px; }.filter-bar>select { border-color:transparent; }.filter-bar #results-count { font-size:14px; color:var(--text-muted); margin-left:8px; }.catalog-grid { row-gap:32px; }
.empty-state { grid-column:1/-1; text-align:center; padding:80px 24px; border:1px solid var(--gray-200); border-radius:16px; background:var(--gray-50); color:var(--brand); }.empty-state h3 { font-size:22px; margin:24px 0 12px; }.empty-state p { font-size:16px; color:var(--text-muted); margin-bottom:24px; }.not-found { margin-top:64px; margin-bottom:96px; }.not-found h1 { font-size:36px; margin:24px 0 16px; }
.catalog-help { display:flex; align-items:center; gap:20px; padding:32px; background:var(--gray-50); border:1px solid var(--gray-200); border-radius:16px; margin-top:48px; }.catalog-help h3 { font-size:18px; }.catalog-help p { color:var(--text-muted); font-size:14px; margin-top:8px; }.catalog-help .btn { margin-left:auto; }

/* Account access */
.auth-page { display:grid; grid-template-columns:1.15fr 1fr; align-items:center; gap:96px; padding-top:96px; padding-bottom:96px; }.auth-story h1 { font-size:36px; }.auth-story>p { margin-top:24px; font-size:16px; line-height:1.85; color:var(--text-muted); }.auth-terminal { background:var(--navy-900); color:var(--code-text); border-radius:16px; overflow:hidden; margin-top:32px; }.auth-terminal-bar { display:flex; align-items:center; gap:10px; padding:16px 24px; border-bottom:1px solid var(--gray-600); color:var(--text-inverse-muted); font:400 11px/1.5 var(--font-mono); }.auth-terminal>div:last-child { padding:24px; font:400 12px/1.9 var(--font-mono); }.auth-terminal p { margin-top:8px; }.auth-terminal-result { display:flex; align-items:center; gap:8px; color:var(--code-string); font-size:11px; margin-top:24px; }.auth-values { display:flex; flex-wrap:wrap; gap:12px 20px; margin-top:24px; color:var(--text-muted); font-size:12px; }.auth-values>span { display:flex; gap:6px; align-items:center; }.auth-values svg { color:var(--brand); }
.auth-form-panel { padding:40px; border:1px solid var(--gray-200); border-radius:16px; background:white; }.auth-form-panel>.eyebrow { font-size:11px; }.auth-form-panel h2 { font-size:24px; }.auth-form-panel>p { color:var(--text-muted); font-size:14px; margin-top:12px; }.auth-form-panel form { display:grid; gap:12px; margin-top:32px; }.input-label { font-size:14px; font-weight:700; color:var(--text-strong); }.text-input { width:100%; min-height:44px; border:1px solid var(--gray-300); border-radius:8px; padding:10px 12px; font-size:14px; background:white; }.text-input:focus { border-color:var(--brand); }.auth-consent { display:flex; align-items:flex-start; gap:10px; font-size:14px; margin:8px 0 12px; }.auth-consent input { accent-color:var(--brand); width:20px; height:20px; flex-shrink:0; margin:2px 0 0; }.auth-consent small { display:block; font-size:12px; line-height:1.65; color:var(--text-muted); margin-top:6px; }
.social-button { display:flex; align-items:center; justify-content:center; min-height:52px; border-radius:8px; border:1px solid var(--gray-300); padding:12px 40px; background:white; color:var(--text-strong); font-size:14px; font-weight:700; position:relative; }.social-button:hover { background:var(--gray-50); border-color:var(--blue-200); }.social-button:active { transform:scale(.98); }.social-button>b,.social-button>b { font-size:20px; color:var(--text-strong); font-family:var(--font-body); font-weight:700; }
.auth-switch { font-size:14px; text-align:center; margin-top:24px; padding-top:24px; border-top:1px solid var(--gray-200); color:var(--text-muted); }.auth-switch a { color:var(--brand); font-weight:700; margin-left:8px; }.auth-switch a:hover { text-decoration:underline; }.auth-demo-note { display:flex; align-items:flex-start; gap:10px; padding:16px; border-radius:12px; background:var(--gray-50); color:var(--text-muted); margin-top:24px; font-size:12px; line-height:1.7; }.auth-demo-note>svg { color:var(--brand); margin-top:2px; }.auth-back { display:flex; justify-content:center; gap:8px; align-items:center; font-size:14px; color:var(--brand); margin-top:24px; }.auth-back:hover { text-decoration:underline; }

/* Korean status messages use body type even when placed in a code panel. */
.editor-status>span:first-child,.auth-terminal-result { font-family:var(--font-body); }

/* Footer */
.site-footer { background:var(--navy-900); color:var(--text-inverse-muted); padding-top:64px; }.footer-top { display:flex; justify-content:space-between; gap:48px; padding-bottom:48px; }.footer-brand .brand-name,.footer-brand .brand-name>span { color:white; }.footer-brand .brand-type small { color:var(--text-inverse-muted); }.footer-intro>p { font-size:14px; line-height:1.85; margin-top:24px; }.footer-location { display:block; font-size:12px; margin-top:16px; color:var(--text-inverse-muted); }.footer-links { display:flex; gap:72px; margin-left:auto; }.footer-links>div { display:flex; flex-direction:column; gap:12px; }.footer-links strong { font-size:14px; color:white; margin-bottom:8px; }.footer-links a { font-size:14px; }.footer-links a:hover { color:white; text-decoration:underline; }.footer-signature { margin-left:40px; display:flex; flex-direction:column; align-items:flex-end; gap:20px; }.footer-signature img { width:64px; height:64px; }.footer-signature span { text-align:right; font:400 11px/1.7 var(--font-mono); letter-spacing:.06em; }.footer-bottom { padding:24px 0; border-top:1px solid var(--gray-600); display:flex; justify-content:space-between; gap:24px; font-size:12px; }

@media(max-width:1150px) {
 .nav-inner { gap:40px; }.desktop-nav { gap:24px; }.nav-actions { gap:16px; }.hero-grid { gap:32px; }.hero h1 { font-size:44px; }.hero-buttons .btn { padding-inline:16px; font-size:13px; }.editor-content { font-size:11px; gap:12px; }.editor-live { display:none; }.editor-assistant p { font-size:11px; }.quick-category { padding:14px 12px; gap:10px; }.quick-category>svg { display:none; }.quick-category small { font-size:11px; }.quick-icon { width:40px; height:40px; }.vibe-feature { gap:48px; }.vibe-intro h2 { font-size:32px; }.course-card-body { padding:20px; }.course-art { padding:20px 20px 0; height:220px; }.course-art>strong { font-size:21px; }.card-meta { gap:12px; font-size:11px; }.mentor-body { padding:28px 20px; }.mentor-body h3 { font-size:20px; }.mentor-art { padding:20px; }.mentor-number { font-size:56px; }.mentor-number small { font-size:7px; }.section-heading h2 { font-size:32px; }.auth-page { gap:48px; }.auth-form-panel { padding:32px; }.catalog-top { flex-wrap:wrap; }.search-field { max-width:360px; flex:1; }.footer-signature { margin-left:0; }.footer-links { gap:48px; }
}
@media(max-width:900px) {
 .nav-inner { gap:28px; }.desktop-nav { gap:20px; font-size:13px; }.nav-actions { gap:12px; font-size:13px; }.signup-nav { display:none; }.hero { padding:64px 0; }.hero-grid { grid-template-columns:1fr; gap:48px; }.hero-copy { text-align:center; }.hero-eyebrow,.hero-buttons,.hero-note { justify-content:center; }.hero h1 { font-size:56px; }.hero-description { font-size:16px; }.hero-visual { width:min(600px,100%); margin:auto; }.hero-buttons .btn { padding-inline:24px; font-size:14px; }.editor-content { font-size:13px; gap:20px; }.editor-live { display:flex; }.editor-assistant p { font-size:13px; }.trust-grid { padding-block:24px; }.trust-grid>div { gap:12px; padding-inline:12px; }.trust-grid p strong { font-size:12px; }.trust-grid p span { font-size:11px; }.trust-grid>div>svg { width:24px; }.trust-number { font-size:28px; }.category-section { grid-template-columns:repeat(2,1fr); gap:16px; }.quick-category { padding:16px; }.quick-category small { font-size:12px; }.quick-category>svg { display:block; }.course-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }.home-course-grid .course-card:last-child { grid-column:1/-1; }.home-course-grid .course-card:last-child .course-card-link { display:grid; grid-template-columns:1fr 1fr; }.home-course-grid .course-card:last-child .course-art { height:100%; min-height:256px; display:flex; flex-direction:column; justify-content:center; }.home-course-grid .course-card:last-child .art-terminal { margin-bottom:20px; }.popular-section,.instructors-section { padding-top:64px; padding-bottom:64px; }.section-heading { flex-wrap:wrap; gap:20px; margin-bottom:32px; }.section-heading h2 { font-size:32px; }.section-heading p { font-size:14px; }.vibe-section,.reviews-section { padding:64px 0; }.vibe-feature { grid-template-columns:1fr; gap:32px; }.vibe-intro h2 { font-size:32px; }.vibe-intro p>br { display:none; }.vibe-intro p { max-width:640px; }.idea-steps { grid-template-columns:1fr; gap:12px; }.idea-steps article { align-items:center; }.mentor-card { display:block; }.mentor-art { width:100%; height:200px; }.mentor-director .mentor-number { position:absolute; right:24px; top:28px; margin:0; font-size:64px; }.mentor-director .mentor-art-label { margin-top:auto; }.mentor-number small { font-size:9px; }.mentor-trophy { position:absolute; right:32px; top:40px; padding:0; }.mentor-art-foot { margin-top:auto; }.mentor-body { min-height:255px; padding:24px; }.mentor-body h3 { font-size:22px; }.quiet-label { display:none; }.review-grid { grid-template-columns:1fr; gap:16px; }.review-card { padding:24px; }.review-card>p { margin:20px 0 24px; }.review-person small { font-size:12px; }.final-cta { margin-top:64px; margin-bottom:64px; padding:40px; }.final-cta h2 { font-size:28px; }.final-cta p { font-size:14px; }.final-cta .btn { padding-inline:20px; }.catalog-intro h1 { font-size:36px; }.catalog-signature { display:none; }.catalog-top { gap:20px; }.search-field { max-width:none; }.catalog-help { flex-wrap:wrap; }.catalog-help .btn { margin-left:auto; }.auth-page { grid-template-columns:1fr; max-width:580px; padding:64px 0; gap:40px; }.auth-story { display:none; }.auth-form-panel { padding:40px; }.footer-signature { display:none; }.footer-top { gap:40px; }.footer-links { gap:40px; }.footer-bottom { flex-direction:column; gap:8px; }
}
@media(max-width:700px) {
 html { scroll-padding-top:88px; }.container { width:calc(100% - 40px); }.site-header { height:72px; }.nav-inner { gap:12px; }.desktop-nav,.nav-login { display:none; }.brand { gap:8px; }.brand>img { width:38px; height:38px; }.brand-name { font-size:21px; }.brand-type small { font-size:8px; }.nav-actions { gap:8px; }.mobile-menu-button { display:flex; }.classroom-link { font-size:12px; gap:6px; }.profile-button>span:last-child { display:none; }.hero { padding:48px 0; }.hero-copy { text-align:left; }.hero-eyebrow,.hero-buttons,.hero-note { justify-content:flex-start; }.hero-eyebrow { font-size:11px; margin-bottom:20px; }.hero h1 { font-size:36px; line-height:1.45; }.hero-description { font-size:14px; line-height:1.9; margin-top:20px; }.hero-buttons { gap:10px; margin-top:28px; }.hero-buttons .btn { min-height:48px; font-size:12px; padding:12px 14px; gap:8px; }.hero-buttons .btn svg { width:16px; }.hero-note { font-size:11px; margin-top:20px; gap:6px; }.hero-note svg { width:14px; }.hero-grid { gap:32px; }.editor-window { border-radius:12px; }.editor-titlebar { padding:0 12px; font-size:9px; height:40px; }.editor-titlebar>svg { width:14px; }.window-dots { gap:4px; }.window-dots i { width:5px; height:5px; }.editor-tabs { gap:16px; font-size:10px; height:36px; }.editor-tabs>span:first-child { padding:0 12px; }.editor-tabs>span:first-child svg { width:12px; }.editor-live { font-size:8px; }.editor-content { padding:20px 12px; gap:12px; font-size:9px; line-height:2.1; }.editor-assistant { padding:12px; gap:10px; }.assistant-icon { width:32px; height:32px; }.assistant-icon svg { width:18px; }.editor-assistant p { font-size:11px; }.editor-assistant>div>span { font-size:9px; }.editor-assistant>svg { width:14px; }.editor-output { margin:12px; }.output-heading { font-size:8px; padding:8px 10px; }.output-content { padding:16px 12px; gap:12px; }.output-mark { width:48px; height:48px; font-size:22px; }.output-content small { font-size:8px; }.output-content h3 { font-size:16px; }.output-arrow svg { width:20px; }.editor-status { padding:0 12px 12px; font-size:8px; gap:6px; }.editor-status svg { width:12px; }.visual-caption { font-size:10px; flex-wrap:wrap; gap:4px; margin-top:12px; }.visual-caption>span:first-child { font-size:9px; }.trust-grid { grid-template-columns:1fr; padding-block:8px; }.trust-grid>div { justify-content:flex-start; padding:16px 4px; gap:16px; }.trust-grid>div+div { border-left:0; border-top:1px solid var(--gray-200); }.trust-grid>div>svg { width:28px; height:28px; margin-inline:8px; }.trust-number { width:44px; text-align:center; font-size:28px; }.trust-number>span { font-size:7px; }.trust-grid p { gap:3px; }.trust-grid p strong { font-size:14px; }.trust-grid p span { font-size:12px; }
 .category-section { padding-top:32px; gap:12px; }.quick-category { padding:16px 12px; gap:10px; flex-wrap:wrap; }.quick-category>svg { display:none; }.quick-category strong { font-size:13px; }.quick-category small { font-size:11px; }.quick-icon { width:36px; height:36px; border-radius:8px; }.quick-icon svg { width:20px; height:20px; }.quick-category>div { flex:1; min-width:72px; }.eyebrow { font-size:11px; margin-bottom:12px; }.popular-section,.instructors-section { padding-top:56px; padding-bottom:56px; }.section-heading { margin-bottom:28px; gap:20px; }.section-heading h2 { font-size:28px; }.section-heading p { font-size:14px; line-height:1.75; margin-top:12px; }.section-heading .text-link { font-size:14px; }.mobile-only { display:initial; }
 .course-grid { grid-template-columns:1fr; gap:24px; }.home-course-grid .course-card:last-child { grid-column:auto; }.home-course-grid .course-card:last-child .course-card-link { display:block; }.home-course-grid .course-card:last-child .course-art { display:block; min-height:0; height:232px; }.home-course-grid .course-card:last-child .art-terminal { margin-bottom:0; }.course-art { padding:24px 24px 0; height:232px; }.course-art>strong { font-size:23px; }.art-topline { font-size:9px; margin-bottom:16px; }.art-subtitle { font-size:12px; }.art-terminal-code { font-size:10px; }.course-card-body { padding:24px; }.course-card h3 { min-height:0; font-size:18px; }.card-instructor { font-size:14px; }.card-meta { font-size:12px; gap:20px; }.card-rating { font-size:12px; }.card-price>strong,.card-price>b { font-size:22px; }.card-price>del { font-size:14px; }.sample-caption { text-align:left; font-size:12px; margin-top:20px; }
 .vibe-section,.reviews-section { padding:56px 0; }.vibe-intro h2 { font-size:28px; }.vibe-intro p { font-size:14px; margin:20px 0; }.vibe-feature { gap:28px; }.idea-steps article { padding:20px 16px; gap:12px; align-items:flex-start; }.step-index { width:32px; height:32px; font-size:11px; }.idea-steps h3 { font-size:16px; }.idea-steps p { font-size:12px; line-height:1.75; }.idea-steps article>svg { width:20px; height:20px; margin-top:3px; }.mentor-grid { grid-template-columns:1fr; gap:24px; }.mentor-art { height:190px; padding:24px; }.mentor-director .mentor-number { top:26px; right:32px; }.mentor-body { min-height:0; padding:24px; }.mentor-body h3 { font-size:22px; }.mentor-body p { font-size:14px; }.mentor-tags { padding-top:20px; }.mentor-tags>span { font-size:12px; }.mentor-trophy { right:32px; top:42px; }.reviews-section .section-heading h2 { font-size:25px; }.review-card { padding:24px; }.review-card>p { font-size:16px; }.review-person { gap:10px; }.review-person small { font-size:11px; }.final-cta { margin-top:56px; margin-bottom:56px; padding:32px 24px; display:block; border-radius:24px; }.final-cta h2 { font-size:28px; }.final-cta p { font-size:14px; }.final-cta .eyebrow { font-size:10px; }.final-cta .btn { margin-top:28px; min-height:48px; width:100%; }
 .catalog-intro { padding:40px 0; }.catalog-intro h1 { font-size:32px; }.catalog-intro p { font-size:14px; line-height:1.75; margin-top:16px; }.catalog-content { padding-top:24px; padding-bottom:56px; }.catalog-top { display:block; padding-bottom:20px; }.category-tabs { overflow-x:auto; padding:3px 2px 10px; gap:6px; scrollbar-width:thin; }.category-tab { font-size:12px; padding:9px 13px; min-height:40px; flex-shrink:0; }.category-tab svg { width:14px; }.search-field { margin-top:12px; min-width:0; width:100%; }.search-field input { font-size:14px; }.filter-bar { gap:10px; margin:20px 0 24px; }.filter-bar>div { gap:8px; flex-wrap:wrap; }.filter-bar label { display:none; }.filter-bar select { font-size:12px; padding:8px; min-height:40px; }.filter-bar #results-count { font-size:12px; margin-left:0; }.catalog-grid { row-gap:24px; }.catalog-help { padding:24px 20px; gap:12px; margin-top:32px; }.catalog-help>.quick-icon { display:none; }.catalog-help h3 { font-size:18px; line-height:1.5; }.catalog-help p { font-size:14px; }.catalog-help .btn { width:100%; margin-top:8px; }
 .auth-page { width:calc(100% - 40px); padding:40px 0 56px; }.auth-form-panel { padding:28px 24px; }.auth-form-panel>.eyebrow { font-size:10px; }.auth-form-panel h2 { font-size:22px; }.auth-form-panel>p { font-size:14px; }.auth-form-panel form { margin-top:24px; }.auth-switch { font-size:13px; line-height:1.8; }.auth-switch a { margin-left:5px; }.auth-demo-note { padding:14px 12px; gap:8px; }.auth-demo-note p { font-size:12px; }.auth-back { font-size:14px; }.auth-consent { font-size:13px; }.auth-consent small { font-size:12px; }.empty-state { padding:56px 24px; }.empty-state h3 { font-size:20px; }.empty-state p { font-size:14px; }.not-found h1 { font-size:28px; }.page-heading h1 { font-size:28px; }.page-heading p { font-size:14px; }
 .site-footer { padding-top:40px; }.footer-top { display:block; padding-bottom:32px; }.footer-intro>p { font-size:14px; margin-top:20px; }.footer-location { font-size:12px; }.footer-links { margin-top:32px; gap:64px; }.footer-links>div { gap:12px; }.footer-links strong { font-size:14px; }.footer-links a { font-size:14px; }.footer-bottom { font-size:11px; line-height:1.8; gap:10px; padding:20px 0 28px; }.footer-brand>img { width:40px; height:40px; }.footer-brand .brand-name { font-size:23px; }.footer-brand .brand-type small { font-size:9px; }
}
@media(max-width:370px) {
 .container { width:calc(100% - 32px); }.classroom-link>span { display:none; }.classroom-link { width:36px; justify-content:center; }.hero h1 { font-size:32px; }.hero-buttons { flex-direction:column; }.hero-buttons .btn { width:100%; font-size:14px; }.hero-note { font-size:10px; align-items:flex-start; }.hero-note svg { margin-top:2px; }.editor-content { gap:8px; font-size:8px; padding-inline:10px; }.editor-live { display:none; }.editor-titlebar { font-size:8px; gap:8px; }.editor-assistant { gap:8px; padding:12px 10px; }.editor-assistant p { font-size:10px; }.small-only { display:initial; }.output-content { gap:10px; padding:12px; }.output-mark { width:40px; height:40px; font-size:18px; }.output-content h3 { font-size:14px; }.output-arrow svg { width:16px; }.editor-status>span:last-child { display:none; }.visual-caption>span:last-child { font-size:9px; }.quick-category { display:block; padding:14px; }.quick-category>div { margin-top:10px; }.quick-category strong { font-size:13px; }.quick-category small { font-size:11px; }.section-heading h2 { font-size:25px; }.course-art { padding:20px 20px 0; height:220px; }.course-art>strong { font-size:21px; }.art-topline { font-size:8px; }.art-terminal-code { font-size:9px; }.course-card-body { padding:20px; }.card-meta { gap:16px; font-size:11px; }.card-price>del { font-size:12px; }.idea-steps article>svg { display:none; }.mentor-body { padding:20px; }.review-card { padding:20px; }.review-person small { font-size:10px; }.final-cta { padding:28px 20px; }.final-cta h2 { font-size:25px; }.final-cta .eyebrow { font-size:9px; }.auth-page { width:calc(100% - 32px); }.auth-form-panel { padding:24px 20px; }.auth-form-panel h2 { font-size:20px; }.footer-links { gap:48px; }.filter-bar select { font-size:11px; }.filter-bar #results-count { font-size:11px; }
}
@media(prefers-reduced-motion:reduce) { *,*::before,*::after { scroll-behavior:auto!important; transition:none!important; animation:none!important; } }

/* Keep meaningful captions readable at every breakpoint. */
.eyebrow,.hero-eyebrow,.new-dot,.hero-note,.quick-category small,.small-tag,.card-meta,
.quiet-label,.mentor-body .eyebrow,.mentor-tags>span,.review-person small,.review-sample,
.filter-bar select,.filter-bar #results-count,.final-cta .eyebrow,.auth-form-panel>.eyebrow,
.footer-bottom,.visual-caption,.visual-caption>span:first-child { font-size:12px; }
.social-provider-icon { display:flex; align-items:center; color:var(--text-strong); }
.quick-category svg,.hero-note svg,.hero-buttons .btn svg,.category-tab svg { width:20px; height:20px; }
.card-meta svg { width:16px; height:16px; }
.mentor-trophy { align-self:center; flex:0 0 72px; width:72px; min-height:72px; margin:auto; padding:0; border-radius:12px; background:var(--blue-50); }
@media(max-width:700px){.quick-category { align-items:flex-start; }.quick-category>div { min-width:75px; }.hero-note { align-items:flex-start; }.hero-note svg { margin-top:1px; }.hero-buttons .btn svg { width:16px; height:16px; }.final-cta .eyebrow { overflow-wrap:anywhere; }}