/* Key to Korean — SEO Site · Soft Brutalist · Black + Gold */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Noto+Sans+KR:wght@400;700;900&display=swap');

:root{--bg:#0D0D0D;--bg-card:#151515;--bg-card-hover:#1a1a1a;--bg-elevated:#1C1C1E;--accent:#FFD700;--accent2:#FFA500;--accent-dim:rgba(255,215,0,0.15);--accent-border:rgba(255,215,0,0.3);--text:#fff;--text-secondary:#999;--text-muted:#555;--border:#222;--border-light:#2a2a2a;--font:'Space Grotesk',-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;--font-korean:'Noto Sans KR',sans-serif;--max-w:900px}
*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font);font-size:15px;line-height:1.6;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}.container{max-width:var(--max-w);margin:0 auto;padding:0 20px}a{color:var(--accent);text-decoration:none;transition:opacity .15s}a:hover{opacity:.8}

.site-header{position:sticky;top:0;z-index:100;background:rgba(13,13,13,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}.header-inner{display:flex;align-items:center;justify-content:space-between;height:56px;gap:16px}.logo{display:flex;align-items:center;gap:8px;color:var(--text);font-weight:700;font-size:16px;text-transform:uppercase;letter-spacing:1px;white-space:nowrap}.logo-emoji{font-size:22px}.main-nav{display:flex;gap:20px}.main-nav a{color:var(--text-muted);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1.5px;transition:color .15s}.main-nav a:hover{color:var(--accent)}.header-cta{display:inline-flex;align-items:center;padding:8px 18px;background:var(--accent);color:#000!important;font-weight:700;font-size:11px;text-transform:uppercase;letter-spacing:1px;transition:opacity .15s,transform .1s;white-space:nowrap}.header-cta:hover{opacity:.9;transform:scale(.98)}

.hero{padding:80px 0 60px;position:relative;overflow:hidden;border-bottom:1px solid var(--border)}.hero::before{content:'';position:absolute;top:-150px;right:-150px;width:400px;height:400px;background:radial-gradient(circle,rgba(255,215,0,.05) 0%,transparent 70%);border-radius:50%}.hero-inner{display:grid;grid-template-columns:1fr 340px;gap:60px;align-items:center}.hero-title{font-size:42px;font-weight:700;line-height:1.1;margin-bottom:20px;letter-spacing:-.5px;text-transform:uppercase}.hero-accent{color:var(--accent)}.hero-subtitle{font-size:15px;color:var(--text-secondary);margin-bottom:32px;max-width:480px;line-height:1.7}.hero-cta-group{display:flex;gap:12px;margin-bottom:40px;flex-wrap:wrap}.hero-cta-primary{display:inline-flex;align-items:center;padding:14px 32px;background:var(--accent);color:#000!important;font-weight:700;font-size:14px;text-transform:uppercase;letter-spacing:1px;transition:all .15s}.hero-cta-primary:hover{opacity:.9;transform:scale(.98)}.hero-cta-secondary{display:inline-flex;align-items:center;padding:14px 24px;border:1px solid var(--border-light);color:var(--text)!important;font-weight:700;font-size:14px;text-transform:uppercase;letter-spacing:1px;transition:all .15s}.hero-cta-secondary:hover{border-color:var(--accent);color:var(--accent)!important}.hero-stats{display:flex;gap:28px}.hero-stat{font-size:12px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.hero-stat strong{color:var(--accent);font-weight:700}

.hero-visual{display:flex;justify-content:center}.hero-phone{width:260px;background:var(--bg-elevated);border:1px solid var(--border);padding:10px}.phone-screen{background:var(--bg);border:1px solid var(--border);padding:20px 16px;min-height:320px;display:flex;flex-direction:column;gap:16px}.phone-header{text-align:center;color:var(--text-muted);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1.5px}.phone-phrase{background:var(--bg-card);border:1px solid var(--border);border-left:3px solid var(--accent);padding:20px 14px;text-align:center}.phone-kr{font-family:var(--font-korean);font-size:28px;font-weight:700;color:var(--text);margin-bottom:4px}.phone-tr{font-size:12px;color:var(--text-muted);margin-bottom:4px}.phone-ru{font-size:13px;color:var(--text-secondary);font-weight:600}.phone-progress{display:flex;flex-direction:column;gap:6px}.phone-stars,.phone-rank{background:var(--bg-card);border:1px solid var(--border);padding:8px 12px;font-size:11px;color:var(--text-secondary);font-weight:600}

.section-features,.section-lessons,.section-dramas{padding:60px 0;border-bottom:1px solid var(--border)}.section-title{font-size:11px;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:2px;text-align:center;margin-bottom:40px}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2px}.feature-item{background:var(--bg-card);border:1px solid var(--border);padding:28px 20px;transition:background .15s}.feature-item:hover{background:var(--bg-card-hover)}.feature-icon{font-size:28px;margin-bottom:12px}.feature-item h3{font-size:14px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px}.feature-item p{font-size:13px;color:var(--text-secondary);line-height:1.6}

.preview-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:2px}.preview-card{display:block;background:var(--bg-card);border:1px solid var(--border);padding:20px;color:var(--text)!important;transition:all .15s}.preview-card:hover{background:var(--bg-card-hover);border-left:3px solid var(--accent)}.preview-category{display:inline-block;font-size:10px;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:1.5px;margin-bottom:8px}.preview-card h3{font-size:14px;font-weight:700;margin-bottom:6px;line-height:1.3}.preview-card p{font-size:12px;color:var(--text-muted);line-height:1.5}.preview-card--drama{background:var(--bg-card);border:1px solid var(--border)}.preview-card--drama:hover{border-left:3px solid var(--accent)}.preview-kr{font-family:var(--font-korean);font-size:12px;color:var(--text-muted);display:block;margin-bottom:4px}.preview-card--drama h3{color:var(--text)}.preview-genre{font-size:11px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}

.cta-section{padding:60px 0}.cta-card{background:var(--bg-card);border:1px solid var(--accent-border);border-left:4px solid var(--accent);padding:48px 32px;text-align:center;max-width:640px;margin:0 auto;position:relative;overflow:hidden}.cta-card::after{content:'';position:absolute;top:-50%;left:-60%;width:50%;height:200%;background:linear-gradient(to right,rgba(255,255,255,0) 0%,rgba(255,215,0,.04) 50%,rgba(255,255,255,0) 100%);transform:skewX(-25deg);animation:shine 4s infinite;animation-delay:1.5s}@keyframes shine{from{left:-75%}to{left:125%}}.cta-emoji{font-size:36px;margin-bottom:12px}.cta-title{font-size:18px;font-weight:700;color:var(--text);text-transform:uppercase;letter-spacing:1px;margin-bottom:10px}.cta-text{font-size:14px;color:var(--text-secondary);margin-bottom:24px;max-width:460px;margin-left:auto;margin-right:auto;line-height:1.6}.cta-features{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:24px}.cta-feature{display:inline-flex;align-items:center;font-size:11px;color:var(--text-secondary);background:var(--bg-elevated);border:1px solid var(--border);padding:6px 12px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.cta-button{display:inline-flex;align-items:center;padding:14px 40px;background:var(--accent);color:#000!important;font-weight:700;font-size:14px;text-transform:uppercase;letter-spacing:1px;transition:all .15s}.cta-button:hover{opacity:.9;transform:scale(.98)}.cta-sub{margin-top:12px;font-size:11px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}

.page-content{padding:32px 0 60px}.breadcrumbs{font-size:11px;color:var(--text-muted);margin-bottom:28px;text-transform:uppercase;letter-spacing:.5px}.breadcrumbs a{color:var(--text-muted)}.breadcrumbs a:hover{color:var(--accent)}.lesson-meta{display:flex;gap:8px;margin-bottom:16px}.meta-tag{display:inline-flex;font-size:10px;font-weight:700;color:var(--accent);background:var(--accent-dim);border:1px solid var(--accent-border);padding:4px 10px;text-transform:uppercase;letter-spacing:1px}

.lesson-article h1,.text-article h1,.drama-article h1,.seo-article h1{font-size:28px;font-weight:700;line-height:1.2;margin-bottom:16px;text-transform:uppercase;letter-spacing:.5px}.lesson-intro,.drama-about,.seo-intro{font-size:15px;color:var(--text-secondary);margin-bottom:32px;line-height:1.7}.lesson-article h2,.text-article h2,.drama-article h2,.seo-article h2{font-size:11px;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:2px;margin-top:40px;margin-bottom:14px}.lesson-article p,.text-article p,.drama-article p,.seo-article p{margin-bottom:14px;line-height:1.7;color:var(--text-secondary)}

.words-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:2px;margin:24px 0}.word-card{background:var(--bg-card);border:1px solid var(--border);padding:18px;text-align:center;transition:all .15s}.word-card:hover{background:var(--bg-card-hover);border-left:3px solid var(--accent)}.word-korean{font-family:var(--font-korean);font-size:24px;font-weight:700;color:var(--text);margin-bottom:4px}.word-transcription{font-size:12px;color:var(--text-muted);margin-bottom:4px}.word-translation{font-size:13px;color:var(--text-secondary);font-weight:600}

.phrases-list{display:flex;flex-direction:column;gap:2px;margin:20px 0}.phrase-card{background:var(--bg-card);border:1px solid var(--border);border-left:3px solid var(--accent);padding:20px}.phrase-korean{font-family:var(--font-korean);font-size:20px;font-weight:700;color:var(--text);margin-bottom:4px}.phrase-transcription{font-size:12px;color:var(--text-muted);margin-bottom:4px}.phrase-translation{font-size:14px;color:var(--text-secondary);font-weight:600}

.drama-info-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:20px;padding:12px 16px;background:var(--bg-card);border:1px solid var(--border);border-left:3px solid var(--accent)}.drama-kr-title{font-family:var(--font-korean);font-weight:700;font-size:15px}.drama-year,.drama-genre{font-size:11px;color:var(--text-muted);background:var(--bg-elevated);border:1px solid var(--border);padding:2px 8px;text-transform:uppercase;letter-spacing:.5px}

.tip-box{display:flex;gap:14px;background:var(--accent-dim);border:1px solid var(--accent-border);border-left:3px solid var(--accent);padding:18px 20px;margin:28px 0}.tip-icon{font-size:20px;flex-shrink:0}.tip-content strong{display:block;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:1.5px;color:var(--accent);margin-bottom:4px}.tip-content p{font-size:13px;color:var(--text-secondary);margin:0}

.article-section{margin-bottom:28px}

.site-footer{background:var(--bg-card);border-top:2px solid var(--accent);color:var(--text-secondary);padding:48px 0 0}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}.footer-logo{font-size:14px;font-weight:700;color:var(--text);text-transform:uppercase;letter-spacing:1px;margin-bottom:10px}.footer-desc{font-size:12px;line-height:1.6;color:var(--text-muted);margin-bottom:12px}.footer-bot-link{display:inline-flex;font-weight:700;font-size:12px;color:var(--accent)!important;text-transform:uppercase;letter-spacing:.5px}.footer-col h4{color:var(--accent);font-size:10px;font-weight:700;margin-bottom:14px;text-transform:uppercase;letter-spacing:2px}.footer-col a{display:block;font-size:12px;color:var(--text-muted)!important;margin-bottom:6px;transition:color .15s}.footer-col a:hover{color:var(--text)!important}.footer-bottom{border-top:1px solid var(--border);padding:16px 0;text-align:center}.footer-bottom p{font-size:11px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}

@media(max-width:900px){.hero-inner{grid-template-columns:1fr;gap:40px;text-align:center}.hero-title{font-size:32px}.hero-subtitle{margin:0 auto 24px}.hero-cta-group{justify-content:center}.hero-stats{justify-content:center}.hero-phone{width:220px}.main-nav{display:none}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){body{font-size:14px}.hero{padding:50px 0 40px}.hero-title{font-size:26px}.lesson-article h1,.text-article h1,.drama-article h1,.seo-article h1{font-size:22px}.words-grid{grid-template-columns:repeat(2,1fr);gap:2px}.word-korean{font-size:20px}.cta-card{padding:32px 16px}.cta-button{padding:12px 28px;font-size:13px}.features-grid{grid-template-columns:1fr}.preview-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:24px}.hero-cta-group{flex-direction:column;align-items:center}}