:root{--orange: #F7802C;--pink: #E0356B;--magenta: #C42E86;--purple: #9639A4;--ink: #2A1A2E;--muted: #6A5A6E;--cream: #FFF8F4;--cream-2: #FBEEE6;--line: #F0E2D8;--white: #FFFFFF;--grad: linear-gradient(120deg, var(--orange) 0%, var(--pink) 50%, var(--purple) 100%);--radius: 16px;--shadow: 0 10px 30px rgba(150, 57, 164, .1);--shadow-lg: 0 20px 50px rgba(150, 57, 164, .18);font-family:Inter,Noto Sans JP,system-ui,sans-serif}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background:var(--cream);color:var(--ink);line-height:1.6}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.jp{font-family:Noto Sans JP,sans-serif}.container{max-width:1120px;margin:0 auto;padding:0 20px}.btn{display:inline-flex;align-items:center;gap:8px;justify-content:center;padding:12px 22px;border-radius:999px;font-weight:600;font-size:15px;border:none;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,opacity .15s;white-space:nowrap}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px #e0356b59}.btn-primary:hover{box-shadow:0 12px 28px #e0356b73}.btn-ghost{background:#ffffffb3;color:var(--ink);border:1px solid var(--line)}.btn-ghost:hover{background:#fff}.btn-outline{background:transparent;border:1.5px solid var(--purple);color:var(--purple)}.btn-block{width:100%}.btn:disabled{opacity:.55;cursor:not-allowed}.nav{position:sticky;top:0;z-index:50;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fff8f4d1;border-bottom:1px solid var(--line)}.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:22px;letter-spacing:-.5px}.brand-dot{width:30px;height:30px;border-radius:9px;background:var(--grad);display:grid;place-items:center;color:#fff;font-size:16px;font-weight:800}.brand span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}.nav-links{display:flex;align-items:center;gap:8px}.nav-link{padding:8px 14px;border-radius:999px;font-weight:500;color:var(--muted)}.nav-link:hover,.nav-link.active{color:var(--ink);background:var(--cream-2)}.nav-burger{display:none;background:none;border:none;font-size:24px;cursor:pointer}.hero{position:relative;overflow:hidden;padding:80px 0 60px}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}.badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:var(--cream-2);color:var(--magenta);font-weight:600;font-size:13px;margin-bottom:18px}.hero h1{font-size:52px;line-height:1.08;font-weight:800;letter-spacing:-1.5px;margin-bottom:18px}.hero h1 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}.hero p.lead{font-size:19px;color:var(--muted);max-width:520px;margin-bottom:28px}.hero-cta{display:flex;gap:12px;flex-wrap:wrap}.hero-stats{display:flex;gap:32px;margin-top:40px}.hero-stats .num{font-size:28px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}.hero-stats .lbl{font-size:13px;color:var(--muted)}.hero-art{background:var(--grad);border-radius:28px;padding:36px;color:#fff;box-shadow:var(--shadow-lg);position:relative;min-height:320px}.hero-art .kana{position:absolute;font-size:120px;font-weight:700;opacity:.18}.hero-art .ka1{top:10px;right:24px}.hero-art .ka2{bottom:4px;left:24px}.hero-card{background:#ffffff29;border:1px solid rgba(255,255,255,.3);border-radius:16px;padding:16px 18px;margin-bottom:12px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.hero-card b{font-size:17px}.hero-card small{opacity:.85}.section{padding:72px 0}.section-head{text-align:center;max-width:640px;margin:0 auto 44px}.section-head .eyebrow{color:var(--magenta);font-weight:700;letter-spacing:1px;text-transform:uppercase;font-size:13px}.section-head h2{font-size:38px;font-weight:800;letter-spacing:-1px;margin:8px 0 12px}.section-head p{color:var(--muted);font-size:17px}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:transform .2s,box-shadow .2s}.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.feature .ic{width:52px;height:52px;border-radius:14px;background:var(--cream-2);display:grid;place-items:center;font-size:26px;margin-bottom:16px}.feature h3{font-size:19px;margin-bottom:8px}.feature p{color:var(--muted);font-size:15px}.levels{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}.level-pill{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 18px;text-align:center;transition:transform .2s,box-shadow .2s}.level-pill:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}.level-pill .lv{font-size:30px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}.level-pill small{color:var(--muted)}.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.course-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}.course-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.course-cover{height:150px;background:var(--grad);position:relative}.course-cover img{width:100%;height:100%;object-fit:cover}.course-lv{position:absolute;top:12px;left:12px;background:#ffffffeb;color:var(--magenta);font-weight:800;font-size:13px;padding:4px 12px;border-radius:999px}.course-body{padding:20px;flex:1;display:flex;flex-direction:column}.course-body 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14px;border-radius:12px;font-size:14px;margin-bottom:16px}.alert-error{background:#fdecef;color:var(--pink);border:1px solid #f7c9d5}.alert-ok{background:#eafaf0;color:#1f9d57;border:1px solid #bfe9cf}.page-head{padding:48px 0 20px}.page-head h1{font-size:36px;font-weight:800;letter-spacing:-1px}.page-head p{color:var(--muted);margin-top:6px}.filters{display:flex;gap:10px;flex-wrap:wrap;margin:24px 0}.chip{padding:8px 16px;border-radius:999px;border:1.5px solid var(--line);background:#fff;cursor:pointer;font-weight:600;font-size:14px;color:var(--muted)}.chip.active{background:var(--grad);color:#fff;border-color:transparent}.detail-grid{display:grid;grid-template-columns:1fr 320px;gap:32px;align-items:start}.lesson-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.lesson-item{display:flex;align-items:center;gap:14px;padding:16px 20px;border-bottom:1px solid var(--line);transition:background 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.body{margin-top:24px;font-size:16px}.lesson-content .body h3{margin:20px 0 10px}.lesson-content .body ul{margin:12px 0 12px 22px}.lesson-content .body p{margin:12px 0}.video-embed{aspect-ratio:16/9;width:100%;border-radius:14px;border:none;margin:16px 0}.quiz-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;max-width:720px;margin:0 auto}.quiz-q{margin-bottom:28px}.quiz-q .qnum{color:var(--magenta);font-weight:700;font-size:13px}.quiz-q .prompt{font-size:19px;font-weight:600;margin:6px 0 16px}.option{display:flex;align-items:center;gap:12px;padding:14px 16px;border:1.5px solid var(--line);border-radius:12px;margin-bottom:10px;cursor:pointer;transition:all .15s;font-size:15px}.option:hover{border-color:var(--purple)}.option.selected{border-color:var(--purple);background:#faf3fb}.option.correct{border-color:#1f9d57;background:#eafaf0}.option.wrong{border-color:var(--pink);background:#fdecef}.option .dot{width:22px;height:22px;border-radius:50%;border:2px solid var(--line);flex-shrink:0;display:grid;place-items:center;font-size:13px}.option.selected .dot{border-color:var(--purple);background:var(--purple);color:#fff}.result-banner{text-align:center;padding:28px;border-radius:var(--radius);margin-bottom:24px}.result-banner.pass{background:#eafaf0;color:#1f9d57}.result-banner.fail{background:#fdecef;color:var(--pink)}.result-banner .score{font-size:54px;font-weight:800}.explain{font-size:14px;color:var(--muted);margin-top:8px;padding:10px 14px;background:var(--cream);border-radius:10px}.dash-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:32px}.stat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}.stat-card .n{font-size:30px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}.stat-card .l{color:var(--muted);font-size:14px}.table{width:100%;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;border-collapse:collapse}.table th,.table td{text-align:left;padding:14px 18px;border-bottom:1px solid var(--line);font-size:14px}.table th{background:var(--cream);font-weight:700}.table tr:last-child td{border-bottom:none}.pill{display:inline-block;padding:3px 12px;border-radius:999px;font-size:12px;font-weight:700}.pill.pass{background:#eafaf0;color:#1f9d57}.pill.fail{background:#fdecef;color:var(--pink)}.empty{text-align:center;padding:60px 20px;color:var(--muted)}.spinner{text-align:center;padding:80px 20px;color:var(--muted)}@media (max-width: 900px){.hero-grid,.detail-grid,.footer-grid{grid-template-columns:1fr}.features,.course-grid{grid-template-columns:1fr 1fr}.levels{grid-template-columns:repeat(3,1fr)}.dash-grid{grid-template-columns:1fr 1fr}.hero h1{font-size:38px}.nav-links{display:none}.nav-burger{display:block}.nav-links.open{display:flex;position:absolute;top:68px;left:0;right:0;flex-direction:column;background:#fff;padding:16px;border-bottom:1px solid var(--line)}.sidebar-card{position:static}}@media (max-width: 560px){.features,.course-grid,.dash-grid{grid-template-columns:1fr}.levels{grid-template-columns:repeat(2,1fr)}.section-head h2,.page-head h1{font-size:28px}}