:root{--ink:#102f3a;--teal:#087f73;--coral:#ef6a4f;--gold:#e9b949;--paper:#f4f8f7;--white:#fff;--line:#d5e1de;--muted:#667b7c;--soft:#e4f3ef;--danger:#b42318;--ok:#157a62;--header:64px;--shadow:0 10px 28px rgba(16,47,58,.09)}
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.practice-toolbar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:15px}.segmented{display:flex;border:1px solid var(--line);border-radius:5px;overflow:hidden}.segmented button{border:0;background:#fff;padding:8px 12px;font-size:.72rem}.segmented button.active{background:var(--ink);color:#fff}.practice-card{background:#fff;border:1px solid var(--line);border-radius:7px;overflow:hidden;margin-bottom:14px}.practice-head{display:flex;align-items:center;justify-content:space-between;padding:14px 17px;background:#f8fbfa;border-bottom:1px solid var(--line)}.practice-head h2{font-size:.92rem}.badge{display:inline-flex;padding:3px 7px;border-radius:3px;background:var(--soft);color:var(--teal);font-size:.62rem;font-weight:800}.practice-body{padding:19px}.passage{white-space:pre-wrap;padding:18px;background:#f7faf9;border-left:3px solid var(--gold);font-family:Georgia,serif;font-size:.92rem;line-height:1.85;margin:14px 0}.prompt{font-weight:700;margin:15px 0}.option-list{display:grid;gap:8px}.option{display:flex;gap:9px;align-items:flex-start;padding:11px;border:1px solid var(--line);border-radius:5px;font-size:.8rem;background:#fff}.option:hover{border-color:var(--teal)}.answer-feedback{display:none;margin-top:12px;padding:12px;background:var(--soft);font-size:.78rem}.answer-feedback.show{display:block}.audio-bar{display:flex;align-items:center;gap:10px;padding:12px;background:var(--ink);color:#fff;border-radius:5px;margin:12px 0}.audio-button{width:38px;height:38px;border:0;border-radius:50%;background:var(--coral);color:#fff}.transcript{display:none;white-space:pre-wrap;padding:12px;background:#f6f8f8;color:var(--muted);font-size:.75rem}.transcript.show{display:block}.timer{font-variant-numeric:tabular-nums;font-size:1.2rem;font-weight:800;color:var(--coral)}.writing-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:12px}.writing-editor{min-height:320px}.editor-meta{display:flex;justify-content:space-between;font-size:.7rem;color:var(--muted);margin-top:7px}.rubric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;margin-top:12px}.rubric-grid div{padding:10px;background:#f7faf9;border:1px solid var(--line);font-size:.68rem}.recorder{display:grid;place-items:center;min-height:240px;background:#fff;border:1px solid var(--line);border-radius:7px;text-align:center;padding:20px}.record-button{width:78px;height:78px;border:8px solid #f9d5cd;background:var(--coral);border-radius:50%;color:#fff;font-weight:800}.wave-bars{height:50px;display:flex;align-items:center;gap:3px;margin:15px}.wave-bars i{display:block;width:4px;height:15px;background:var(--teal);animation:wave .8s ease-in-out infinite alternate}.wave-bars i:nth-child(2n){animation-delay:.2s}.wave-bars i:nth-child(3n){animation-delay:.4s}@keyframes wave{to{height:42px}}
.vocab-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:12px}.flashcard{min-height:330px;display:grid;place-items:center;text-align:center;background:#fff;border:1px solid var(--line);border-radius:7px;padding:25px}.flashcard .term{font-size:2.4rem;font-weight:800}.flashcard .pron{color:var(--muted)}.flashcard .meaning{font-size:1.05rem;color:var(--teal);margin:13px}.review-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;margin-top:10px}.review-actions button{min-height:48px;border:1px solid var(--line);background:#fff;border-radius:5px;font-size:.7rem}.review-actions button:hover{border-color:var(--teal)}.collocations{display:flex;flex-wrap:wrap;gap:5px;justify-content:center;margin-top:10px}.collocations span{padding:4px 7px;background:var(--soft);border-radius:3px;font-size:.67rem}
.membership-layout{display:grid;grid-template-columns:1fr .75fr;gap:14px}.plan-panel{background:var(--ink);color:#fff;border-radius:7px;padding:28px}.plan-price{font-size:2.6rem;font-weight:800;margin:20px 0}.plan-price small{font-size:.75rem;color:#c0d2d2}.plan-features{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin:20px 0}.plan-features span{font-size:.75rem}.plan-features span::before{content:'✓';color:var(--gold);margin-right:6px}.pay-methods{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin:14px 0}.pay-method{padding:15px;border:1px solid var(--line);background:#fff;border-radius:6px;text-align:left}.pay-method.active{border:2px solid var(--teal);background:var(--soft)}.order-table{width:100%;border-collapse:collapse;font-size:.72rem}.order-table th,.order-table td{padding:9px;border-bottom:1px solid var(--line);text-align:left}.status-pending{color:var(--coral)}.status-paid{color:var(--ok)}
.auth-page-shell{max-width:560px;margin:auto;padding:36px 16px 60px}.auth-card{background:#fff;border:1px solid var(--line);border-radius:7px;padding:26px}.auth-heading{display:flex;align-items:flex-start;gap:14px;margin-bottom:22px}.auth-mark{display:grid;place-items:center;width:62px;height:54px;background:var(--ink);color:#fff;border-radius:5px;font-size:.65rem;font-weight:800}.auth-kicker{color:var(--coral);font-size:.64rem;font-weight:800}.auth-heading h1{font-size:1.35rem}.auth-heading p:last-child{color:var(--muted);font-size:.76rem}.verification-row{display:grid;grid-template-columns:minmax(0,1fr) 150px;gap:8px;align-items:start}.verification-row .form-group{margin-bottom:0}.verification-row .btn{height:43px;min-height:43px;align-self:start;margin-top:24px;white-space:nowrap}.auth-password-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;align-items:end}.verification-hint,.auth-switch,.text-muted{font-size:.72rem;color:var(--muted)}.auth-switch{text-align:center;margin-top:16px}.auth-message{padding:10px;background:#fff2f0;color:var(--danger);border:1px solid #f3c5bc;margin-bottom:12px;font-size:.75rem}
.admin-layout{display:grid;grid-template-columns:210px 1fr;min-height:calc(100vh - var(--header))}.admin-sidebar{background:var(--ink);color:#fff;padding:18px}.admin-sidebar h2{font-size:1rem;margin-bottom:20px}.admin-sidebar a{display:block;padding:9px;border-radius:5px;font-size:.75rem;color:#c8d6d6}.admin-sidebar a.active,.admin-sidebar a:hover{background:rgba(255,255,255,.1);color:#fff}.admin-content{padding:24px;min-width:0}.admin-stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:9px}.admin-table-wrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:7px;margin-top:15px}.admin-table{width:100%;border-collapse:collapse;font-size:.72rem;min-width:720px}.admin-table th,.admin-table td{padding:10px;border-bottom:1px solid var(--line);text-align:left}.main-footer{background:var(--ink);color:#fff;padding:30px 20px}.footer-inner{max-width:1180px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:20px}.footer-inner div{display:grid}.footer-inner span,.footer-inner small,.footer-inner a{font-size:.65rem;color:#b9cccc}.footer-inner nav{display:flex;gap:14px}
@media(max-width:1120px){.primary-nav{position:fixed;top:var(--header);left:0;right:0;display:none;grid-template-columns:repeat(3,1fr);background:#fff;border-bottom:1px solid var(--line);padding:10px}.primary-nav.open{display:grid}.nav-toggle{display:block;order:2}.header-actions{margin-left:auto}.exam-grid,.feature-grid{grid-template-columns:repeat(2,1fr)}.path-grid{grid-template-columns:repeat(2,1fr)}.path-grid article{border-bottom:1px solid var(--line)}}
@media(max-width:720px){:root{--header:60px}.nav-shell{padding:0 10px}.brand small,.profile-chip>span:last-child,.membership-chip{display:none}.brand strong{font-size:.78rem}.public-login{display:none}.language-switch{display:none}.primary-nav{grid-template-columns:repeat(2,1fr);max-height:calc(100vh - var(--header));overflow:auto}.page-shell{padding:24px 13px 42px}.page-heading{display:block}.page-heading h1{font-size:1.65rem}.home-hero{height:630px;min-height:0;background-position:62% center;align-items:flex-end}.home-hero::after{background:linear-gradient(0deg,rgba(244,248,247,.99) 0%,rgba(244,248,247,.94) 56%,rgba(244,248,247,.12) 100%)}.home-hero-inner{padding:26px 16px}.home-hero h1{font-size:2.25rem}.hero-actions{display:grid}.hero-actions .btn{width:100%}.hero-proof{display:grid;grid-template-columns:repeat(2,1fr)}.public-band{padding:36px 13px}.section-head{display:block}.section-head h2{font-size:1.35rem;margin-bottom:6px}.exam-grid,.feature-grid,.metric-grid,.score-strip{grid-template-columns:1fr 1fr}.exam-tile{min-height:180px}.path-grid{grid-template-columns:1fr}.path-grid article{border-right:0}.today-grid,.writing-layout,.vocab-layout,.membership-layout{grid-template-columns:1fr}.progress-row{grid-template-columns:100px 1fr 38px}.rubric-grid{grid-template-columns:1fr 1fr}.plan-features{grid-template-columns:1fr}.auth-page-shell{padding:20px 12px 40px}.auth-card{padding:20px 15px}.verification-row,.auth-password-grid{grid-template-columns:1fr}.verification-row .btn{width:100%;margin-top:0}.admin-layout{grid-template-columns:1fr}.admin-sidebar{display:flex;overflow:auto;gap:5px}.admin-sidebar h2{display:none}.admin-sidebar a{flex:0 0 auto}.admin-content{padding:16px 12px}.admin-stat-grid{grid-template-columns:1fr 1fr}.footer-inner{align-items:flex-start;flex-direction:column}}
@media(max-width:420px){.exam-grid,.feature-grid,.metric-grid,.score-strip{grid-template-columns:1fr}.home-hero h1{font-size:2rem}.review-actions{grid-template-columns:1fr 1fr}.pay-methods{grid-template-columns:1fr}.writing-editor{min-height:250px}}