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@media(max-width:620px){.sidebar{display:none}.mobile-nav{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:10;background:#fff;border-top:1px solid var(--line);padding:7px 6px max(7px,env(safe-area-inset-bottom));justify-content:space-around;box-shadow:0 -8px 24px #203f2a0b}.mobile-nav a{display:grid;place-items:center;gap:0;color:#66846f;font-size:1.3rem;min-width:55px}.mobile-nav small{font-size:.61rem;font-weight:800}.main{margin:0;padding:22px 18px 100px}.topbar{margin-bottom:17px}.date-label{font-size:.61rem}.hero{min-height:300px}.hero-copy{padding:31px 25px;width:100%}.hero h1{font-size:2.4rem}.hero p{max-width:310px;font-size:.8rem}.hero-visual{position:absolute;inset:0;pointer-events:none}.hero-orbit{right:-210px;top:0}.hero-word{right:12px;top:164px;font-size:2.3rem;opacity:.3}.hero-note{display:none}.stats-grid{grid-template-columns:repeat(2,1fr);margin:15px 0 34px;gap:10px}.stat-card{padding:15px 12px;gap:8px}.stat-card:last-child{grid-column:span 2}.stat-card strong{font-size:1.25rem}.stat-card span:last-child{font-size:.65rem}.stat-icon{width:36px;height:36px;font-size:1.15rem}.section-head h2{font-size:1.4rem}.lesson-grid{grid-template-columns:1fr;gap:12px}.lesson-card{min-height:220px}.bottom-banner{align-items:flex-start;flex-wrap:wrap}.bottom-banner a{margin:0 0 0 57px}.page-head{padding:19px 0 24px;margin-bottom:24px}.page-head h1{font-size:2.25rem}.page-head p{font-size:.82rem}.lesson-hero{padding:22px}.lesson-hero h1{font-size:2rem}.lesson-hero-icon{font-size:2.3rem}.content-card{padding:21px}.wallet-hero{padding:25px}.wallet-hero>strong{font-size:2.6rem}.tutor-info{padding:5px}.auth-wrap{display:block}.auth-story{display:none}.auth-form-panel{min-height:100vh;padding:40px 24px;align-items:start}.auth-card{margin-top:30px}.mobile-brand{display:flex;align-items:center;gap:10px;font:800 1.35rem Outfit,Arial,sans-serif;margin-bottom:65px}.auth-card h2{font-size:2.3rem}.admin-request{align-items:flex-start;flex-wrap:wrap}.request-action{width:100%;display:flex;align-items:center;justify-content:space-between;padding-left:48px}.request-action>strong{margin:0}.request-main{width:calc(100% - 55px)}.notice{margin:0 0 16px}}
.bubble-label{display:block;font-size:.58rem;font-weight:800;letter-spacing:.1em;opacity:.65;margin-bottom:6px}.chat-balance{margin-left:auto;font-size:.7rem;font-weight:800;color:var(--green);background:#eaf4ec;border-radius:99px;padding:8px 10px}.tutor-form{display:grid;gap:9px;border-top:1px solid var(--line);padding:16px 20px 20px}.tutor-form label{font-size:.7rem;color:#64796a;font-weight:800}.tutor-form select,.tutor-form textarea{border:1px solid #dfe7de;border-radius:9px;padding:10px 12px;outline:none;background:#fff;color:var(--ink);font:inherit;font-size:.82rem}.tutor-form select:focus,.tutor-form textarea:focus{border-color:#75a984;box-shadow:0 0 0 3px #e5f2e8}.tutor-form .button{margin-top:4px}.tutor-form .button:disabled{background:#a8b7ac;cursor:not-allowed}.tutor-form .fine-print{margin:0}.tutor-form .fine-print a{color:var(--green);font-weight:800}.chat-window{max-height:520px;overflow:auto}.bubble{white-space:normal;overflow-wrap:anywhere}
.admin-usage{margin-top:18px}.admin-usage h2{margin-top:7px}.table-scroll{overflow-x:auto}.usage-table{border-collapse:collapse;width:100%;min-width:520px;margin-top:13px;text-align:left}.usage-table th,.usage-table td{padding:12px 10px;border-bottom:1px solid var(--line);font-size:.75rem}.usage-table th{color:#91a094;font-weight:800;font-size:.66rem;letter-spacing:.07em}.usage-table td small{display:block;color:#9aa79c;margin-top:3px}.usage-table tr:last-child td{border-bottom:0}.usage-table .empty-row{text-align:center;color:var(--muted);padding:25px}
.topbar-actions{display:flex;align-items:center;gap:10px}.profile-chip{font-size:.74rem;font-weight:800;color:#6a8670;padding:10px}.vocab-save{margin-top:16px}.vocab-summary{display:flex;gap:15px;align-items:center;background:#e8f2e8;padding:19px 22px;border-radius:15px;margin-bottom:33px}.vocab-summary strong{font:800 1.1rem Outfit,Arial,sans-serif}.vocab-summary p{font-size:.75rem;color:#778b7c;margin:2px 0 0}.word-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.word-card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:22px}.word-card h3{margin:15px 0 3px}.word-card p{color:var(--muted);font-size:.8rem}.word-actions{display:flex;flex-wrap:wrap;gap:7px;margin-top:19px}.word-actions form{display:inline}.vocab-empty{grid-column:1/-1;background:#fff;border:1px solid var(--line);border-radius:15px;padding:38px}.upcoming-card{margin-top:20px}.profile-layout{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(260px,.9fr);gap:20px;align-items:start}.profile-layout .content-card>p{margin-bottom:4px}.profile-side{display:grid;gap:15px}.profile-side .content-card{display:grid;justify-items:start;gap:10px}.profile-side .content-card h2{margin:0}.profile-side .content-card p{margin:0 0 10px}.profile-side .button{margin-top:4px}.text-button{border:0;background:none;padding:12px;color:#a46457;font-weight:800;font-size:.78rem}.form-stack select{width:100%;border:1px solid #dfe7de;background:#fff;border-radius:9px;padding:12px 14px;outline:none;color:var(--ink);font-size:.84rem}.form-stack select:focus{border-color:#75a984;box-shadow:0 0 0 3px #e5f2e8}
@media(max-width:850px){.word-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.profile-layout{grid-template-columns:1fr}}
@media(max-width:620px){.topbar-actions{gap:2px}.profile-chip{font-size:.68rem;padding:8px}.word-grid{grid-template-columns:1fr}.vocab-summary{padding:15px}.vocab-summary strong{font-size:.95rem}.vocab-summary p{font-size:.68rem}}