/* LAMTANS English Coach (stage A). Scoped to .lec so it never clashes with the site theme. */
.lec{--n:#0B3E7A;--n2:#0a2f5c;--r:#E31E24;--ink:#1b2a3d;--mu:#5f6f84;--ln:#dde5ef;--so:#F0F5FB;--ok:#11703c;--okb:#e6f5ec;--bad:#b3141a;--badb:#fdeaea;font-family:"Open Sans",sans-serif;color:var(--ink);line-height:1.55;max-width:880px;margin:0 auto}
.lec *{box-sizing:border-box}
.lec h1,.lec h2,.lec h3,.lec .lec-pop{font-family:Poppins,sans-serif}
.lec-bar-top{display:flex;justify-content:space-between;align-items:center;gap:12px;background:var(--n);color:#fff;border-radius:14px;padding:12px 16px;margin-bottom:16px}
.lec-bar-top b{font:600 17px Poppins,sans-serif}
.lec-stats{display:flex;gap:8px;flex-wrap:wrap;font:600 13px Poppins,sans-serif}
.lec-stats span{background:rgba(255,255,255,.14);padding:6px 10px;border-radius:40px;white-space:nowrap}
.lec-card{background:#fff;border:1px solid var(--ln);border-radius:16px;padding:22px;box-shadow:0 6px 24px rgba(11,62,122,.06);margin-bottom:16px}
.lec-hero{background:linear-gradient(135deg,var(--n),var(--n2));color:#fff;border:0}
.lec-hero h2{margin:0 0 6px;font-size:clamp(22px,4vw,30px);color:#fff}
.lec-hero p{margin:0;opacity:.9}
.lec-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:700px){.lec-grid{grid-template-columns:1fr}}
.lec-tile h3{margin:0 0 6px;color:var(--n);font-size:19px}
.lec-tile p{margin:0 0 14px;color:var(--mu);font-size:14.5px}
.lec-pill{display:inline-block;font:600 11px/1 Poppins,sans-serif;letter-spacing:.06em;padding:5px 9px;border-radius:40px;background:var(--so);color:var(--n);margin-bottom:10px}
.lec-pill.red{background:var(--r);color:#fff}
.lec-btn{display:inline-block;border:0;cursor:pointer;background:var(--r);color:#fff!important;font:600 15px/1 Poppins,sans-serif;padding:13px 22px;border-radius:40px;text-decoration:none}
.lec-btn:hover{background:#c5161c}.lec-btn:disabled{background:#c9d2de;cursor:default}
.lec-btn.gh{background:#fff;color:var(--n)!important;border:1.5px solid var(--ln)}
.lec-btn.gh:hover{border-color:var(--n)}
.lec-prog{height:8px;background:var(--so);border-radius:8px;overflow:hidden;margin:4px 0 18px}
.lec-prog i{display:block;height:100%;background:var(--r);width:0;transition:width .4s}
.lec-sh{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:13px;color:var(--mu);font-weight:600}
.lec-q{font:600 18px/1.4 Poppins,sans-serif;color:var(--ink);margin:6px 0 14px}
.lec-opts{display:grid;gap:10px}
.lec-opts.three{grid-template-columns:repeat(3,1fr)}
.lec-opt{text-align:left;border:1.5px solid var(--ln);background:#fff;border-radius:12px;padding:12px 14px;font:600 15px "Open Sans",sans-serif;color:var(--ink);cursor:pointer}
.lec-opts.three .lec-opt{text-align:center}
.lec-opt:hover{border-color:var(--n)}
.lec-opt.ok{border-color:var(--ok);background:var(--okb);color:var(--ok)}
.lec-opt.bad{border-color:var(--bad);background:var(--badb);color:var(--bad)}
.lec-fb{margin-top:14px;padding:12px 14px;border-radius:12px;font-size:14.5px;display:none}
.lec-fb.show{display:block}.lec-fb.ok{background:var(--okb);color:#0d5a30}.lec-fb.bad{background:var(--badb);color:#8d0f14}
.lec-pas{background:var(--so);border-radius:12px;padding:16px;font-size:15.5px;margin-bottom:16px}
.lec-pas p{margin:0 0 10px}.lec-pas p:last-child{margin:0}
.lec-pl{font:700 13px Poppins,sans-serif;color:var(--n);margin-right:6px}
.lec-s{border-radius:4px;transition:background .2s}
.lec-tap .lec-s{cursor:pointer;background:rgba(11,62,122,.06)}
.lec-tap .lec-s:hover{background:rgba(11,62,122,.14)}
.lec-s.proof{background:#c9f0d7!important;box-shadow:0 0 0 2px #7fd19e}
.lec-s.no{background:#ffd9da!important}
.lec-hint{font-size:13.5px;color:var(--mu);margin:0 0 10px}
.lec-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.lec-chip{border:1.5px solid var(--ln);background:#fff;border-radius:40px;padding:8px 14px;font:600 14px "Open Sans",sans-serif;cursor:pointer;color:var(--ink)}
.lec-chip.sel{background:var(--n);color:#fff;border-color:var(--n)}
.lec-chip.used{opacity:.35;pointer-events:none}
.lec-slot{display:block;width:100%;text-align:left;border:2px dashed #b9c6d8;border-radius:12px;padding:12px 14px;margin-bottom:10px;background:#fff;cursor:pointer;font:600 14.5px "Open Sans",sans-serif;color:var(--mu)}
.lec-slot b{color:var(--n);margin-right:6px}
.lec-slot.filled{border-style:solid;color:var(--ink)}
.lec-slot.ok{border-color:var(--ok);background:var(--okb)}.lec-slot.bad{border-color:var(--bad);background:var(--badb)}
.lec-gap{display:inline-block;min-width:110px;border-bottom:2px solid var(--n);text-align:center;font-weight:700;color:var(--n);padding:0 6px}
.lec-listen{display:flex;align-items:center;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.lec-play{width:56px;height:56px;border-radius:50%;border:0;background:var(--n);color:#fff;cursor:pointer;display:grid;place-items:center}
.lec-play:disabled{background:#c9d2de}
.lec input[type=text],.lec textarea,.lec select{width:100%;font:15px "Open Sans",sans-serif;padding:11px 13px;border:1.5px solid var(--ln);border-radius:12px;background:#fff}
.lec select{width:auto}
.lec textarea{min-height:80px}
.lec input:focus,.lec textarea:focus{outline:none;border-color:var(--n)}
.lec-diff span{padding:1px 3px;border-radius:4px;margin-right:2px}
.lec-diff .w-ok{background:var(--okb);color:var(--ok)}.lec-diff .w-miss{background:#fff1c7;color:#7a5a00}
.lec-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:12px}
.lec-flash{perspective:800px;height:130px;cursor:pointer}
.lec-flash .in{position:relative;width:100%;height:100%;transition:transform .5s;transform-style:preserve-3d}
.lec-flash.flip .in{transform:rotateY(180deg)}
.lec-flash .f,.lec-flash .b{position:absolute;inset:0;backface-visibility:hidden;border-radius:14px;padding:14px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center}
.lec-flash .f{background:var(--n);color:#fff;font:600 17px Poppins,sans-serif}
.lec-flash .f small{font:400 11px "Open Sans",sans-serif;opacity:.7;margin-top:6px}
.lec-flash .b{background:#fff;border:1.5px solid var(--ln);transform:rotateY(180deg);font-size:13.5px}
.lec-tag{font:600 10px Poppins,sans-serif;background:var(--badb);color:var(--bad);padding:3px 7px;border-radius:40px;margin-top:6px}
.lec-meter{position:relative;height:18px;border-radius:18px;background:linear-gradient(90deg,#fdeaea,#fff1c7 40%,#e6f5ec);margin:30px 0 8px}
.lec-meter .me,.lec-meter .tg{position:absolute;top:-24px;transform:translateX(-50%);font:600 12px Poppins,sans-serif;white-space:nowrap}
.lec-meter .me::after,.lec-meter .tg::after{content:"";position:absolute;left:50%;top:18px;width:3px;height:24px;margin-left:-1.5px;border-radius:2px}
.lec-meter .me{color:var(--n);transition:left 1s ease}.lec-meter .me::after{background:var(--n)}
.lec-meter .tg{color:var(--r)}.lec-meter .tg::after{background:var(--r)}
.lec-ticks{display:flex;justify-content:space-between;font-size:11.5px;color:var(--mu)}
.lec-big{font:700 42px/1 Poppins,sans-serif;color:var(--n)}
.lec-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.lec-badge{display:flex;align-items:center;gap:10px;background:var(--so);border-radius:12px;padding:10px 12px;font-size:14px}
.lec-mu{color:var(--mu);font-size:13.5px}
.lec-nav{display:flex;justify-content:space-between;align-items:center;margin-top:18px;gap:10px}
.lec-hide{display:none!important}
.lec-rep{background:none;border:0;padding:0;margin-top:12px;color:var(--mu);font-size:12.5px;text-decoration:underline;cursor:pointer}
.lec-repbox{margin-top:10px;padding:12px;border:1px dashed var(--ln);border-radius:12px}
.lec-toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(120px);background:var(--ink);color:#fff;padding:10px 18px;border-radius:40px;font:600 14px Poppins,sans-serif;transition:transform .3s;z-index:99;visibility:hidden}
.lec-toast.on{transform:translateX(-50%) translateY(0);visibility:visible}
.lec-note{font-size:12.5px;color:var(--mu);margin-top:6px}
@media(max-width:560px){.lec-opts.three{grid-template-columns:1fr}.lec-card{padding:16px}}
/* v2: scene card, words-to-know, paragraph cards, hints, exam tips */
.lec-scene{position:relative;height:190px;border-radius:14px;overflow:hidden;margin-bottom:16px;background:linear-gradient(135deg,#0B3E7A 0%,#1f5fa8 55%,#E31E24 140%)}
.lec-scene img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.lec-scene-in{position:absolute;left:0;right:0;bottom:0;display:flex;align-items:center;gap:12px;padding:16px 18px;background:linear-gradient(0deg,rgba(6,24,48,.85),rgba(6,24,48,0));color:#fff}
.lec-scene-in small{display:block;font:600 11px/1.3 Poppins,sans-serif;letter-spacing:.06em;text-transform:uppercase;opacity:.85}
.lec-scene-in b{display:block;font:600 20px/1.25 Poppins,sans-serif}
.lec-pcards{display:grid;gap:10px;margin-bottom:16px}
.lec-pcard{position:relative;background:#fff;border:1.5px solid var(--ln);border-left:5px solid var(--n);border-radius:12px;padding:12px 14px 12px 50px;font-size:15.5px;transition:border-color .2s,box-shadow .2s,background .2s}
.lec-pcard p{margin:0}
.lec-pbadge{position:absolute;left:12px;top:12px;width:28px;height:28px;border-radius:50%;background:var(--n);color:#fff;display:grid;place-items:center;font:700 13px Poppins,sans-serif}
.lec-pcard.hint{border-color:#f5a623;border-left-color:#f5a623;background:#fffaf0;box-shadow:0 0 0 3px rgba(245,166,35,.25)}
.lec-pcard.hint .lec-pbadge{background:#f5a623}
.lec-hintbtn{background:#fff7e6;border:1.5px solid #f5d08a;color:#7a5200;border-radius:40px;padding:5px 12px;font:600 12.5px Poppins,sans-serif;cursor:pointer}
.lec-hintbtn:disabled{opacity:.5;cursor:default}
.lec-tip{margin-top:10px;padding:12px 14px;border-radius:12px;background:#eef4ff;border:1px solid #cfe0fb;font-size:14px;color:#23405f}
.lec-tip b{display:block;font:600 13px Poppins,sans-serif;color:var(--n);margin-bottom:2px}
@media(max-width:560px){.lec-scene{height:150px}.lec-scene-in b{font-size:17px}.lec-pcard{padding-left:46px}}