:root{
  --bg:#071018;--bg2:#0b1420;--panel:#101b28;--panel2:#152334;--line:#26384b;
  --text:#f3f8ff;--muted:#b7c5d7;--soft:#d8e6f7;--accent:#8be28f;--accent2:#73c7ff;
  --gold:#ffd36a;--danger:#ff8e8e;--radius:22px;--shadow:0 22px 70px rgba(0,0,0,.32)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:radial-gradient(circle at 8% 0,rgba(139,226,143,.12),transparent 28rem),radial-gradient(circle at 86% 10%,rgba(115,199,255,.13),transparent 32rem),linear-gradient(180deg,#071018,#08111b 38%,#071018);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit}.container{width:min(1180px,calc(100% - 40px));margin-inline:auto}.skip{position:absolute;left:-999px;top:0}.skip:focus{left:12px;top:12px;z-index:999;background:#fff;color:#000;padding:10px 14px;border-radius:10px}
.site-header{position:sticky;top:0;z-index:100;background:rgba(7,16,24,.91);backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,.08)}
.header-inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:inline-flex;align-items:center;gap:12px;min-width:0;text-decoration:none;color:var(--text);font-weight:700;white-space:nowrap}.brand span:last-child{overflow:hidden;text-overflow:ellipsis}.brand-mark{flex:0 0 auto;width:46px;height:46px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#061018;font-size:.84rem;font-weight:950;letter-spacing:.03em}.brand.small .brand-mark{width:38px;height:38px;border-radius:13px;font-size:.76rem}
.nav{display:flex;align-items:center;justify-content:flex-end;gap:4px;flex-wrap:wrap}.nav a{display:inline-flex;align-items:center;min-height:38px;padding:8px 10px;border-radius:999px;text-decoration:none;color:var(--muted);font-weight:800;font-size:.93rem;white-space:nowrap}.nav a:hover,.nav a[aria-current=page]{color:var(--text);background:rgba(255,255,255,.08)}
.menu-toggle{display:none;flex:0 0 auto;width:44px;height:44px;place-items:center;border:1px solid rgba(255,255,255,.14);border-radius:14px;background:rgba(255,255,255,.07);color:var(--text);font-size:1.25rem;cursor:pointer}
.hero{padding:72px 0 40px}.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 410px;gap:32px;align-items:center}.eyebrow{text-transform:uppercase;letter-spacing:.16em;color:var(--accent);font-weight:950;font-size:.8rem}.hero h1,.page-hero h1{font-size:clamp(2.45rem,5.3vw,4.85rem);line-height:1.03;margin:16px 0 18px;letter-spacing:-.05em}.hero p,.page-hero p{font-size:1.12rem;color:#c8d7ea;max-width:820px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:13px 18px;border-radius:16px;text-decoration:none;border:1px solid transparent;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#061018;font-weight:950;box-shadow:0 14px 34px rgba(99,205,160,.18);cursor:pointer}.btn.secondary{background:rgba(255,255,255,.085);color:var(--text);border-color:rgba(255,255,255,.12);box-shadow:none}.btn.ghost{background:transparent;color:#d7ffda;border-color:rgba(139,226,143,.35);box-shadow:none}
.panel,.card,.course-card,.stat,.exercise,.quiz-box,.record-box,.lesson-side,.quick-card,.notice{background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.035));border:1px solid rgba(255,255,255,.09);box-shadow:0 14px 45px rgba(0,0,0,.17)}
.panel{border-radius:26px;padding:24px}.panel h2{margin-top:0}.mini-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.quick-card{border-radius:18px;padding:16px}.quick-card h3{margin:.55rem 0 .25rem}.quick-card p{margin:0;color:var(--muted);font-size:.95rem}.badge,.tag,.level-pill{display:inline-flex;align-items:center;border-radius:999px;font-weight:950}.badge{gap:7px;background:rgba(255,211,106,.12);border:1px solid rgba(255,211,106,.25);color:var(--gold);font-size:.8rem;padding:5px 10px}.tag{background:rgba(113,196,255,.12);color:#c9ebff;border:1px solid rgba(113,196,255,.22);padding:4px 10px;font-size:.8rem}.level-pill{background:rgba(139,226,143,.13);color:#caffcd;border:1px solid rgba(139,226,143,.25);padding:4px 10px;font-size:.78rem}.muted{color:var(--muted)}
.progress-bar{height:11px;background:#0a1520;border-radius:999px;overflow:hidden;border:1px solid rgba(255,255,255,.08)}.progress-bar span{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));width:0}.result{font-weight:950;color:var(--accent);margin-top:10px}.section{padding:34px 0}.section-title{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:18px}.section-title h2,.page-hero h1{margin:0}.section h2{font-size:clamp(1.8rem,3.5vw,2.55rem);letter-spacing:-.03em}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.card{display:flex;flex-direction:column;min-height:150px;border-radius:22px;padding:20px;text-decoration:none;color:var(--text);transition:.18s transform,.18s border-color,.18s background}.card:hover{transform:translateY(-3px);border-color:rgba(139,226,143,.34);background:rgba(255,255,255,.075)}.card h3{margin:.65rem 0 .35rem}.card p{margin:0;color:var(--muted)}.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.stat{border-radius:20px;padding:18px}.stat strong{display:block;font-size:2rem;line-height:1.1;letter-spacing:-.04em}.page-hero{padding:42px 0 26px;border-bottom:1px solid rgba(255,255,255,.08)}
.toolbar{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0}.input,.select{background:#0c1723;color:var(--text);border:1px solid var(--line);border-radius:15px;padding:12px 14px;min-height:46px}.input{min-width:min(100%,360px);flex:1}.course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.course-card{position:relative;border-radius:20px;padding:18px;text-decoration:none;color:var(--text)}.course-card h3{margin:.65rem 0 .35rem}.course-card p{color:var(--muted);margin:0 0 1rem}.meta-row{display:flex;gap:8px;flex-wrap:wrap}.path{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0 0}.path a{color:var(--muted);text-decoration:none}.lesson-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:24px;padding:30px 0 54px}.lesson-side{position:sticky;top:96px;align-self:start;border-radius:20px;padding:16px}.lesson-side a{display:block;text-decoration:none;color:var(--muted);padding:8px 10px;border-radius:12px}.lesson-side a:hover{background:rgba(255,255,255,.08);color:var(--text)}.lesson-main{min-width:0}.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.tab-btn{border:1px solid var(--line);background:rgba(255,255,255,.06);color:var(--muted);border-radius:999px;padding:10px 13px;font-weight:950;cursor:pointer}.tab-btn.active{background:var(--accent);color:#061017;border-color:transparent}.tab-panel{display:none}.tab-panel.active{display:block}.accordion{display:grid;gap:12px}.acc-item{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09);border-radius:18px;overflow:hidden}.acc-head{width:100%;background:transparent;color:var(--text);border:0;padding:16px 18px;display:flex;align-items:center;justify-content:space-between;text-align:left;font-weight:950;font-size:1rem;cursor:pointer}.acc-body{display:none;padding:0 18px 18px;color:var(--muted)}.acc-item.open .acc-body{display:block}.phrase-list{display:grid;gap:10px}.phrase{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;background:rgba(0,0,0,.18);border:1px solid rgba(255,255,255,.07);border-radius:15px;padding:12px}.phrase small{display:block;color:#94a9bf}.listen{background:rgba(139,226,143,.14);border:1px solid rgba(139,226,143,.25);color:#d7ffda;border-radius:12px;padding:8px 10px;font-weight:950;cursor:pointer}.dialogue{display:grid;gap:10px}.bubble{max-width:82%;padding:13px 15px;border-radius:17px;background:rgba(113,196,255,.12);border:1px solid rgba(113,196,255,.2)}.bubble:nth-child(even){margin-left:auto;background:rgba(139,226,143,.11);border-color:rgba(139,226,143,.22)}.exercise,.quiz-box,.record-box{border-radius:20px;padding:18px;margin:14px 0}.question{padding:14px 0;border-top:1px solid rgba(255,255,255,.08)}.question:first-child{border-top:0}.choices{display:grid;gap:8px;margin-top:8px}.choices button{background:#0c1723;color:var(--text);border:1px solid var(--line);border-radius:13px;text-align:left;padding:11px;cursor:pointer}.choices button.correct{border-color:rgba(139,226,143,.9);background:rgba(139,226,143,.16)}.choices button.wrong{border-color:rgba(255,142,142,.85);background:rgba(255,142,142,.12)}.flashcards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.flashcard{min-height:120px;display:grid;place-items:center;text-align:center;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:17px;padding:16px;cursor:pointer}.flashcard .back{display:none}.flashcard.flipped .front{display:none}.flashcard.flipped .back{display:block}.lexique-table{width:100%;border-collapse:collapse;background:rgba(255,255,255,.045);border-radius:18px;overflow:hidden}.lexique-table th,.lexique-table td{text-align:left;padding:12px;border-bottom:1px solid rgba(255,255,255,.08)}.lexique-table th{background:rgba(255,255,255,.08)}.notice{border-color:rgba(255,211,106,.25);background:rgba(255,211,106,.09);color:#ffe7a5;border-radius:18px;padding:16px}.footer{margin-top:50px;border-top:1px solid rgba(255,255,255,.08);background:rgba(0,0,0,.16);padding:38px 0 20px}.footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr 1fr;gap:25px}.footer a{display:block;color:var(--muted);text-decoration:none;margin:.35rem 0}.footer-bottom{margin-top:28px;color:#8190a7;font-size:.9rem}.empty{display:none;color:var(--muted);padding:18px}.check-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.print-only{display:none}
@media (max-width:1120px){.header-inner{min-height:68px}.menu-toggle{display:grid}.nav{display:none;position:absolute;left:20px;right:20px;top:76px;background:#0a1320;border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:12px;box-shadow:var(--shadow);grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.nav.open{display:grid}.nav a{justify-content:center;background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.08);border-radius:13px;padding:11px 8px}.hero-grid,.lesson-layout{grid-template-columns:1fr}.lesson-side{position:static}.panel{max-width:720px}.hero{padding-top:46px}.cards,.course-grid,.stats,.footer-grid,.flashcards{grid-template-columns:repeat(2,minmax(0,1fr))}.hero h1{font-size:clamp(2.2rem,8vw,4rem)}}
@media (max-width:640px){.container{width:min(100% - 28px,1180px)}.brand span:last-child{font-size:.94rem}.brand-mark{width:42px;height:42px;border-radius:14px}.nav{left:14px;right:14px;top:70px;grid-template-columns:1fr}.hero{padding:34px 0 26px}.hero h1,.page-hero h1{font-size:clamp(2.05rem,11vw,3.1rem);line-height:1.06}.hero p,.page-hero p{font-size:1rem}.hero-actions{display:grid}.btn{width:100%}.cards,.course-grid,.stats,.footer-grid,.flashcards,.mini-grid{grid-template-columns:1fr}.section-title{display:block}.section-title .btn{margin-top:14px}.phrase{grid-template-columns:1fr}.bubble{max-width:100%}.footer{padding-bottom:28px}}
@media print{.site-header,.footer,.lesson-side,.tabs,.btn,.listen,.record-box{display:none}.tab-panel{display:block!important}.panel,.card,.exercise,.quiz-box{box-shadow:none;border:1px solid #ddd}.print-only{display:block}body{background:white;color:#111}.tab-panel{color:#111}}

/* V6: visible five-phrase learning blocks */
.key-phrases-section{padding-top:34px;padding-bottom:22px}
.section-lead{color:var(--muted);max-width:850px;margin-top:-8px;margin-bottom:18px;line-height:1.7}
.key-phrase-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;margin-top:18px}
.key-phrase-grid.mini{grid-template-columns:repeat(3,minmax(0,1fr))}
.key-phrase-card{position:relative;background:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.035));border:1px solid var(--border);border-radius:22px;padding:18px;box-shadow:0 18px 45px rgba(0,0,0,.18);min-height:185px;display:flex;flex-direction:column;gap:12px}
.key-num{width:34px;height:34px;border-radius:999px;background:var(--accent);color:#07110c;display:flex;align-items:center;justify-content:center;font-weight:900}
.key-main{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;font-size:1.02rem;line-height:1.4}
.key-main strong{color:var(--text)}
.small-listen{padding:7px 9px;min-width:38px;border-radius:12px}
.key-trans{display:flex;flex-direction:column;gap:6px;color:var(--muted);font-size:.9rem;line-height:1.45}
.key-trans b{color:var(--text);margin-right:5px}
.home-five-visible .key-phrase-card{min-height:155px}
@media(max-width:1180px){.key-phrase-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.key-phrase-grid.mini{grid-template-columns:1fr}}
@media(max-width:680px){.key-phrase-grid{grid-template-columns:1fr}.key-phrase-card{min-height:auto}.section-title{gap:12px}.section-title .btn{width:100%;justify-content:center}}


/* V7: stabilisation header + menu identique sur toutes les pages */
html{scrollbar-gutter:stable;}
body{overflow-y:scroll;}
.site-header{min-height:76px;}
.header-inner{height:76px;}
.nav{flex-wrap:nowrap;}
.nav a{flex:0 0 auto;line-height:1;}
.nav a[aria-current="page"]{box-shadow:inset 0 0 0 1px rgba(255,255,255,.04);}
@media (max-width:1280px){
  .nav a{font-size:.88rem;padding-inline:8px;}
  .brand{font-size:.95rem;}
}
@media (max-width:1120px){
  .header-inner{height:68px;}
  .site-header{min-height:68px;}
  .nav{flex-wrap:initial;}
}