/* ── Reset & Base ── */
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:system-ui,'Segoe UI',sans-serif;background:#f0fdf4;color:#14532d;font-size:16px;line-height:1.6}
a{color:#16a34a;text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1100px;margin:0 auto;padding:0 20px}

/* ── Header ── */
.site-header{background:#14532d;padding:12px 0;position:sticky;top:0;z-index:100;box-shadow:0 2px 8px rgba(0,0,0,.3)}
.site-header .container{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-size:1.05rem;flex-shrink:0}
.logo:hover{text-decoration:none}
.logo-badge{background:#16a34a;color:#fff;font-weight:900;font-size:.85rem;width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0;letter-spacing:-.5px}
.logo-badge.sm{width:22px;height:22px;border-radius:6px;font-size:.6rem}
.logo-text{color:#bbf7d0}
.logo-text strong{color:#fff}
.site-nav{display:flex;gap:12px;flex-wrap:wrap;flex:1}
.site-nav a{color:#86efac;font-size:.82rem;font-weight:500;transition:color .2s;white-space:nowrap}
.site-nav a:hover{color:#fff;text-decoration:none}
.site-nav a.active{color:#fff;background:#16a34a;padding:2px 8px;border-radius:4px}

/* ── Breadcrumb ── */
.breadcrumb-bar{background:#dcfce7;border-bottom:1px solid #bbf7d0;padding:8px 0}
.breadcrumbs{font-size:.82rem;color:#166534;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.breadcrumbs a{color:#16a34a}
.breadcrumbs .sep{color:#4ade80}

/* ── Hero ── */
.hero{background:linear-gradient(135deg,#14532d 0%,#15803d 50%,#16a34a 100%);color:#fff;padding:48px 0 40px;text-align:center}
.hero h1{font-size:2.2rem;font-weight:800;margin-bottom:10px;line-height:1.2}
.hero h1 span{color:#bbf7d0}
.hero p{font-size:1rem;color:#bbf7d0;max-width:560px;margin:0 auto 20px}
.hero-sub{display:inline-block;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:#fff;padding:6px 18px;border-radius:20px;font-size:.9rem;font-weight:600}

/* ── Section heading ── */
.section-heading{font-size:1.15rem;font-weight:700;color:#14532d;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.section-heading::after{content:'';flex:1;height:2px;background:linear-gradient(to right,#16a34a22,transparent)}

/* ── World groups ── */
.world-group{margin-bottom:32px}
.world-label{font-size:.95rem;font-weight:700;color:#14532d;background:#dcfce7;border-left:4px solid #16a34a;padding:8px 14px;border-radius:0 8px 8px 0;margin-bottom:12px}

/* ── Pack grid ── */
.pack-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px}
.pack-card{background:#fff;border:1px solid #bbf7d0;border-radius:10px;padding:14px 16px;transition:all .15s}
.pack-card:hover{background:#16a34a;color:#fff;border-color:#16a34a;text-decoration:none;transform:translateY(-2px);box-shadow:0 4px 12px rgba(22,163,74,.25)}
.pack-card:hover .pack-name{color:#fff}
.pack-card:hover .pack-meta{color:#bbf7d0}
.pack-name{font-weight:700;font-size:.95rem;color:#14532d;margin-bottom:4px}
.pack-meta{font-size:.78rem;color:#4b5563}

/* ── Level list ── */
.level-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:8px;margin-bottom:24px}
.level-item{background:#fff;border:1px solid #bbf7d0;border-radius:8px;padding:10px 14px;transition:all .15s}
.level-item:hover{background:#16a34a;color:#fff;border-color:#16a34a;text-decoration:none;transform:translateY(-1px)}
.level-item:hover .lv-key{color:#fff}
.level-item:hover .lv-num{color:#bbf7d0}
.lv-num{font-size:.75rem;color:#6b7280;font-weight:500}
.lv-key{font-size:1.1rem;font-weight:800;color:#14532d;letter-spacing:.06em}

/* ── Answer card ── */
.answer-card{background:#fff;border-radius:14px;box-shadow:0 2px 12px rgba(22,163,74,.1);margin-bottom:20px;overflow:hidden}
.answer-card-head{background:linear-gradient(135deg,#14532d,#15803d);color:#fff;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}
.answer-card-head h2{font-size:1rem;font-weight:700}
.badge{background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.25);padding:3px 10px;border-radius:12px;font-size:.75rem}
.answer-card-body{padding:24px}

.key-word{font-size:2.2rem;font-weight:900;letter-spacing:.08em;color:#16a34a;background:#f0fdf4;border:3px solid #bbf7d0;border-radius:14px;padding:16px 28px;display:inline-block;margin-bottom:6px;text-align:center}
.key-label{font-size:.8rem;color:#9ca3af;text-transform:uppercase;letter-spacing:.08em;margin-bottom:20px;text-align:center}

.words-section{margin-bottom:16px}
.words-section h3{font-size:.85rem;font-weight:700;color:#166534;text-transform:uppercase;letter-spacing:.06em;margin-bottom:10px;padding-bottom:4px;border-bottom:2px solid #dcfce7}
.word-tiles{display:flex;flex-wrap:wrap;gap:7px}
.word-tile{background:#f0fdf4;border:1px solid #bbf7d0;border-radius:7px;padding:7px 14px;font-weight:700;color:#14532d;font-size:.9rem;letter-spacing:.04em}
.word-tile.bonus{background:#fffbeb;border-color:#fde68a;color:#92400e}

.letters-display{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:20px;justify-content:center}
.letter-tile{background:#14532d;color:#fff;font-weight:800;font-size:1.1rem;width:38px;height:38px;border-radius:8px;display:flex;align-items:center;justify-content:center;text-transform:uppercase}

/* ── Navigation ── */
.level-nav{display:flex;justify-content:space-between;align-items:center;margin-top:20px;gap:12px}
.level-nav a{background:#16a34a;color:#fff;padding:10px 20px;border-radius:8px;font-size:.88rem;font-weight:600;transition:background .2s}
.level-nav a:hover{background:#15803d;text-decoration:none}
.level-nav .current-label{font-size:.88rem;color:#6b7280;font-weight:500;text-align:center}

/* ── Sidebar ── */
.main-wrap{padding:28px 0 48px}
.main-wrap .container{display:grid;grid-template-columns:1fr 280px;gap:24px;align-items:start}
@media(max-width:768px){.main-wrap .container{grid-template-columns:1fr}}

.sidebar-card{background:#fff;border-radius:14px;box-shadow:0 2px 12px rgba(22,163,74,.08);padding:18px;margin-bottom:18px}
.sidebar-card h3{font-size:.92rem;font-weight:700;color:#14532d;margin-bottom:12px;padding-bottom:8px;border-bottom:2px solid #f0fdf4}
.level-link-list{list-style:none}
.level-link-list li{border-bottom:1px solid #f0fdf4}
.level-link-list li:last-child{border-bottom:none}
.level-link-list a{display:flex;align-items:center;justify-content:space-between;padding:7px 4px;font-size:.83rem;color:#166534;transition:all .15s}
.level-link-list a:hover{color:#16a34a;text-decoration:none;padding-left:8px}
.level-link-list a.current{color:#16a34a;font-weight:600}
.level-link-list .lv-badge{background:#f0fdf4;border-radius:4px;padding:1px 6px;font-size:.72rem;font-weight:700;color:#16a34a}
.level-link-list a.current .lv-badge{background:#16a34a;color:#fff}

/* ── SEO text ── */
.seo-text{background:#fff;border-radius:14px;padding:22px 26px;margin-top:20px;box-shadow:0 2px 10px rgba(22,163,74,.06)}
.seo-text h2{font-size:1.05rem;color:#14532d;margin-bottom:8px}
.seo-text p{color:#4b5563;font-size:.88rem;margin-bottom:8px}
.seo-text p:last-child{margin-bottom:0}

/* ── Footer ── */
.site-footer{background:#14532d;color:#86efac;padding:30px 0;margin-top:20px}
.footer-inner{text-align:center}
.footer-brand{display:flex;align-items:center;justify-content:center;gap:8px;color:#bbf7d0;font-weight:600;margin-bottom:8px}
.footer-desc{font-size:.82rem;margin-bottom:14px;color:#4ade80}
.footer-links{display:flex;gap:12px;justify-content:center;margin-bottom:10px;flex-wrap:wrap}
.footer-links a{color:#bbf7d0;font-size:.8rem}
.footer-links a:hover{color:#fff}
.footer-also{font-size:.78rem;color:#4ade80}
.footer-also a{color:#86efac}
.footer-also a:hover{color:#fff}

@media(max-width:600px){
  .hero h1{font-size:1.5rem}
  .key-word{font-size:1.6rem;padding:12px 20px}
  .site-nav{display:none}
}