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solid var(--line)}.tense__meta{display:flex;flex-wrap:wrap;gap:0.55rem}.chip{display:inline-flex;align-items:center;min-height:2rem;padding:0 0.75rem;border-radius:999px;background:rgba(120,120,128,0.1);color:rgba(60,60,67,0.92);font-size:0.8rem;font-weight:700;letter-spacing:0.03em}.family-present .chip:first-child,.family-past .chip:first-child,.family-future .chip:first-child{background:var(--family-soft);color:var(--family-text)}.tense__title-wrap{display:grid;gap:0.35rem}.tense__title{margin:0;font-family:var(--font-serif);font-size:clamp(1.85rem,3.2vw,2.65rem);line-height:1;letter-spacing:-0.04em}.tense__subtitle{margin:0;color:var(--muted);font-size:1rem;display:block}.tense__core{margin:0;font-size:1.06rem;color:var(--text);max-width:70ch;display:block}.tense__content{margin-top:1rem}.tense{display:none}.tense.is-current{display:block}.tense__grid{display:grid;grid-template-columns:1.2fr 0.9fr;gap:0.85rem;margin-top:1rem}.tense__block{padding:0.95rem 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li{margin-top:0.45rem}.keywords{display:flex;flex-wrap:wrap;gap:0.55rem}.keyword{display:inline-flex;align-items:center;min-height:2rem;padding:0 0.7rem;border:1px solid var(--family-soft,rgba(52,199,89,0.16));border-radius:999px;background:var(--family-soft,rgba(52,199,89,0.12));color:var(--family-text,var(--warm-dark));font-size:0.86rem}.keywords-note{margin:0.9rem 0 0;color:var(--muted);font-size:0.95rem}.guide-text{display:grid;gap:0.85rem}.guide-text p{margin:0;color:var(--muted)}.tense-insights{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0.85rem;margin-top:1rem}.tense-insight{padding:0.92rem 1rem;border-radius:18px;border:1px solid rgba(60,60,67,0.08);background:var(--card)}.tense-insight__label{margin:0 0 0.45rem;font-size:0.76rem;font-weight:800;letter-spacing:0.08em;text-transform:uppercase;color:var(--label)}.tense-insight p:last-child{margin:0;color:var(--muted)}.tense-insight--memory{background:linear-gradient(180deg,rgba(0,122,255,0.08),var(--card))}.tense-insight--trap{background:linear-gradient(180deg,rgba(255,149,0,0.09),var(--card))}.tense-insight--nuance{background:linear-gradient(180deg,rgba(52,199,89,0.08),var(--card))}.syntax-showcase{display:grid;grid-template-columns:1fr;gap:0.85rem;margin-top:0.7rem}.syntax-card{display:grid;gap:0.9rem;padding:1rem;border-radius:18px;background:linear-gradient(180deg,var(--card),var(--card-tint));border:1px solid rgba(60,60,67,0.08);box-shadow:inset 0 1px 0 rgba(255,255,255,0.88)}.syntax-card__top{display:grid;gap:0.55rem}.syntax-card__examples{display:grid;gap:0.7rem}.syntax-example{padding:0.82rem 0.9rem;border-radius:14px;background:var(--card-2);border:1px solid rgba(60,60,67,0.08)}.syntax-example__en,.syntax-example__pl{margin:0}.syntax-example__en{font-weight:700}.syntax-example__pl{margin-top:0.32rem;color:var(--muted)}.syntax__formula--pl{margin-top:0.38rem}.syntax-extra{display:grid;gap:0.8rem;margin-top:1rem;padding-top:1rem;border-top:1px solid var(--line)}.syntax{display:grid;gap:0.8rem;margin-top:1rem}.syntax__row{display:grid;grid-template-columns:190px minmax(0,1fr);gap:0.9rem;align-items:start;padding-top:0.8rem;border-top:1px solid rgba(60,60,67,0.08)}.syntax__row:first-child{border-top:0;padding-top:0}.syntax__label{width:fit-content;min-height:2.1rem;padding:0 0.85rem;border-radius:999px;font-size:0.92rem;font-weight:700;display:inline-flex;align-items:center;text-transform:none;letter-spacing:-0.01em;background:var(--family-soft,rgba(0,122,255,0.1));color:var(--family-text,var(--accent-dark))}.syntax__formula{margin:0;font-family:"SFMono-Regular","Menlo","Monaco","Consolas",monospace;font-size:0.98rem;white-space:normal}.syntax__formula code{display:inline-block;max-width:100%;line-height:1.5}.syntax__note{margin:0.35rem 0 0;color:var(--muted);font-size:0.95rem}.family-present .example__tag,.family-present .button--secondary{color:var(--accent-dark)}.family-past .example__tag,.family-past .button--secondary{color:#1f9f45}.family-future .example__tag,.family-future .button--secondary{color:#8f39c5}.family-present .button--secondary{background:var(--present-soft);border-color:rgba(0,122,255,0.18)}.family-past .button--secondary{background:var(--past-soft);border-color:rgba(52,199,89,0.18)}.family-future 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.button{width:100%;flex-basis:100%}}.skip-link{position:absolute;left:12px;top:-60px;z-index:999;background:var(--accent);color:#fff;padding:10px 16px;border-radius:12px;font-weight:700;text-decoration:none;transition:top 160ms ease}.skip-link:focus{top:12px}.noscript-note{margin:0;padding:14px 18px;background:var(--danger-soft);color:var(--danger);border:1px solid var(--danger);border-radius:12px;font-weight:600;text-align:center}.theme-toggle{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--panel);color:var(--text);cursor:pointer;font-size:1.05rem;line-height:1;display:inline-grid;place-items:center;transition:transform 160ms ease,border-color 160ms ease,background 160ms ease}.theme-toggle:hover{transform:translateY(-1px);border-color:var(--accent)}:root[data-theme="dark"]{--bg:#0c1018;--bg-soft:#121826;--bg-elevated:rgba(20,27,41,0.94);--panel:rgba(22,30,46,0.82);--panel-strong:rgba(24,33,50,0.98);--card:rgba(22,30,46,0.96);--card-2:rgba(18,25,39,0.98);--card-tint:rgba(16,22,34,0.96);--label:rgba(206,216,235,0.66);--line:rgba(180,195,220,0.16);--line-strong:rgba(52,199,89,0.36);--text:#eaf0fb;--muted:rgba(206,216,235,0.72);--accent:#4c9bff;--accent-dark:#7fb7ff;--accent-soft:rgba(76,155,255,0.16);--present:#4c9bff;--present-soft:rgba(76,155,255,0.16);--past:#3ddc84;--past-soft:rgba(61,220,132,0.16);--future:#c483f0;--future-soft:rgba(196,131,240,0.16);--warm:#3ddc84;--warm-dark:#8ef0b6;--warm-soft:rgba(61,220,132,0.18);--warm-deep:#b6f5d2;--success:#3ddc84;--success-soft:rgba(61,220,132,0.16);--danger:#ff7a7a;--danger-soft:rgba(255,122,122,0.14);--shadow:0 18px 42px rgba(0,0,0,0.5)}:root[data-theme="dark"] body{background:var(--bg);color:var(--text)}.test-mode-switch{display:flex;flex-wrap:wrap;gap:0.5rem;margin-bottom:1rem}.test-mode-switch__button{border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:999px;padding:0.45rem 0.95rem;font:inherit;font-size:0.9rem;font-weight:700;cursor:pointer;transition:background 160ms ease,border-color 160ms ease,color 160ms ease}.test-mode-switch__button.is-active{background:var(--accent);border-color:var(--accent);color:#fff}.test-choice-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:0.5rem;margin-top:0.6rem}.test-choice{border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:12px;padding:0.6rem 0.8rem;font:inherit;font-weight:600;cursor:pointer;text-align:left;transition:border-color 160ms ease,background 160ms ease}.test-choice:hover{border-color:var(--accent)}.test-choice.is-chosen{border-color:var(--accent);background:var(--accent-soft)}.test-choice.is-correct{border-color:var(--success);background:var(--success-soft)}.test-choice.is-wrong{border-color:var(--danger);background:var(--danger-soft)}.test-translate-input{width:100%;min-height:3rem;margin-top:0.6rem;padding:0.7rem 0.9rem;border-radius:12px;border:1px solid var(--line);background:var(--bg-soft);color:var(--text);font:inherit;resize:vertical}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:0.8rem;margin-bottom:1.2rem}.stats-card{padding:1rem 1.1rem;border-radius:16px;border:1px solid var(--line);background:var(--panel)}.stats-card strong{font-size:1.6rem;display:block}.stats-card span{color:var(--muted);font-size:0.85rem}.stats-bars{display:grid;gap:0.55rem}.stats-bar{display:grid;grid-template-columns:13ch 1fr auto;align-items:center;gap:0.6rem;font-size:0.88rem}.stats-bar__track{height:12px;border-radius:999px;background:var(--accent-soft);overflow:hidden}.stats-bar__fill{height:100%;border-radius:999px;background:var(--accent)}.stats-empty{color:var(--muted)}.irregular-toolbar{margin-bottom:1rem}.irregular-search{width:min(420px,100%);padding:0.6rem 0.9rem;border-radius:12px;border:1px solid var(--line);background:var(--bg-soft);color:var(--text);font:inherit}.irregular-table-wrap{overflow-x:auto;border-radius:16px;border:1px solid var(--line);min-width:0;max-width:100%;-webkit-overflow-scrolling:touch}.irregular-table{width:100%;border-collapse:collapse;min-width:520px}.irregular-table th,.irregular-table td{text-align:left;padding:0.6rem 0.9rem;border-bottom:1px solid var(--line)}.irregular-table th{background:var(--panel);position:sticky;top:0}.irregular-table tr:last-child td{border-bottom:0}.irregular-table td:nth-child(4){color:var(--muted)}.test-question.is-close{border-color:#e0a106;background:rgba(224,161,6,0.08)}.test-feedback__close{color:#b7820a}.test-feedback__diff mark{background:rgba(212,71,71,0.22);color:inherit;padding:0 2px;border-radius:4px}.exam-timer{font-weight:800;font-variant-numeric:tabular-nums;padding:0.3rem 0.7rem;border-radius:999px;background:var(--danger-soft);color:var(--danger)}.test-content.is-exam .test-hint-toggle,.test-content.is-exam .test-question__hint,.test-content.is-exam [data-speak]{display:none !important}.speech-control{display:grid;gap:0.3rem;margin-bottom:0.7rem;font-size:0.85rem}.speech-control input[type="range"]{width:100%}.speech-control select{padding:0.4rem 0.6rem;border-radius:10px;border:1px solid var(--line);background:var(--bg-soft);color:var(--text);font:inherit}.speech-control__buttons{display:flex;flex-wrap:wrap;gap:0.5rem}.stats-review{margin-top:0.9rem}.update-toast{position:fixed;left:50%;bottom:18px;transform:translateX(-50%);z-index:1000;display:flex;align-items:center;gap:0.8rem;padding:0.7rem 1rem;border-radius:14px;background:var(--panel-strong);border:1px solid var(--line);box-shadow:var(--shadow);font-size:0.9rem;max-width:calc(100% - 24px)}.theme-toggle__icon{display:inline-grid;place-items:center}.theme-toggle__icon svg{display:block}@media (max-width:720px){.test-mode-switch{overflow-x:auto;flex-wrap:nowrap;-webkit-overflow-scrolling:touch}.test-mode-switch__button{white-space:nowrap}.test-choice-grid{grid-template-columns:1fr}.test-toolbar__actions{flex-wrap:wrap}.exam-timer{flex-basis:100%;text-align:center}}@media (max-width:540px){.stats-grid{grid-template-columns:1fr 1fr}.stats-bar{grid-template-columns:10ch 1fr auto;font-size:0.8rem}.update-toast{flex-direction:column;text-align:center}}:root[data-theme="dark"] .hero__backdrop{background:linear-gradient(180deg,rgba(18,24,38,0.94),rgba(12,16,24,0.94)),radial-gradient(circle at 50% -6%,rgba(76,155,255,0.16),transparent 30%),radial-gradient(circle at 82% 20%,rgba(61,220,132,0.08),transparent 18%),radial-gradient(circle at 22% 22%,rgba(196,131,240,0.08),transparent 24%)}:root[data-theme="dark"] .hero h1{color:var(--text)}:root[data-theme="dark"] .hero__lead{color:rgba(234,240,251,0.82)}:root[data-theme="dark"] .eyebrow{color:rgba(206,216,235,0.72)}:root[data-theme="dark"] .level-switch--topbar{background:rgba(255,255,255,0.08)}:root[data-theme="dark"] .level-switch--topbar .level-switch__button{color:rgba(234,240,251,0.9)}:root[data-theme="dark"] .mode-switch__button.is-active{background:#ffffff;color:#0c1018}:root[data-theme="dark"] .button--ghost{background:rgba(255,255,255,0.1);border-color:rgba(255,255,255,0.22);color:var(--text)}:root[data-theme="dark"] .aspect-grid article,:root[data-theme="dark"] .principles article,:root[data-theme="dark"] .tense__block,:root[data-theme="dark"] .tense__block--practice,:root[data-theme="dark"] .tense-insight,:root[data-theme="dark"] .detail-group,:root[data-theme="dark"] .quiz-item,:root[data-theme="dark"] .test-options__button,:root[data-theme="dark"] .test-card,:root[data-theme="dark"] .test-intro,:root[data-theme="dark"] .appendix-card,:root[data-theme="dark"] .test-question,:root[data-theme="dark"] .summary-table-block,:root[data-theme="dark"] .comparison-side,:root[data-theme="dark"] .test-results__next,:root[data-theme="dark"] .test-actions,:root[data-theme="dark"] .flashcard__face{background:var(--panel-strong)}:root[data-theme="dark"] .sidebar__summary,:root[data-theme="dark"] .filter,:root[data-theme="dark"] .test-feedback,:root[data-theme="dark"] .empty-state,:root[data-theme="dark"] .level-switch:not(.level-switch--topbar) .level-switch__button{background:var(--panel)}:root[data-theme="dark"] .tense-insight--memory,:root[data-theme="dark"] .family-present .tense__block--practice,:root[data-theme="dark"] .level-scope__hero{background:linear-gradient(180deg,rgba(76,155,255,0.16),var(--panel-strong))}:root[data-theme="dark"] .tense-insight--trap,:root[data-theme="dark"] .family-future .tense__block--practice{background:linear-gradient(180deg,rgba(196,131,240,0.16),var(--panel-strong))}:root[data-theme="dark"] .tense-insight--nuance,:root[data-theme="dark"] .family-past .tense__block--practice{background:linear-gradient(180deg,rgba(61,220,132,0.16),var(--panel-strong))}:root[data-theme="dark"] .example{background:linear-gradient(90deg,rgba(76,155,255,0.16),var(--panel-strong))}:root[data-theme="dark"] .test-card.is-active{background:linear-gradient(180deg,rgba(76,155,255,0.2),var(--panel-strong))}:root[data-theme="dark"] .brand{color:rgba(234,240,251,0.66)}:root[data-theme="dark"] .chip{background:rgba(255,255,255,0.07);color:var(--text)}@media (hover:none){.button:hover,.mode-switch__button:hover,.theme-toggle:hover,.home-logo:hover{transform:none}}.sidebar__search,.irregular-search{-webkit-appearance:none;appearance:none}@media (max-width:720px){.test-actions{margin-bottom:env(safe-area-inset-bottom)}}