:root{font-family:Noto Sans SC,PingFang SC,Microsoft YaHei,sans-serif;color:#26322d;background:#f7f1e5;font-synthesis:none;text-rendering:optimizeLegibility;--paper: #f7f1e5;--paper-light: #fffaf0;--ink: #26322d;--muted: #6f746e;--forest: #1f5c49;--forest-soft: #dce8df;--apricot: #ee9a55;--apricot-soft: #f8dfc9;--gold: #c8a55b;--sage: #8da58d;--terracotta: #bf6f56;--border: #d9d0bf;--radius-card: 24px}*{box-sizing:border-box}html{min-width:320px;min-height:100%;background:var(--paper)}body{margin:0;min-width:320px;min-height:100vh;background:radial-gradient(circle at 15% 10%,rgb(255 255 255 / 55%),transparent 28rem),var(--paper)}button,input,textarea,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}.boot-screen{min-height:100svh;display:grid;place-content:center;justify-items:center;padding:32px;text-align:center}.boot-screen h1{margin:8px 0 12px;font-family:Georgia,"Noto Serif SC",serif;font-size:clamp(38px,10vw,54px);font-weight:400;color:var(--forest)}.boot-screen p{max-width:30ch;color:var(--muted)}.eyebrow{margin:18px 0 0;letter-spacing:.18em;font-size:12px;font-weight:700;color:var(--apricot)}.brand-mark{position:relative;width:80px;height:80px}.brand-mark span{position:absolute;width:50px;height:62px;border:4px solid var(--forest);border-radius:12px;background:var(--paper-light)}.brand-mark span:first-child{left:8px;top:0;transform:rotate(-6deg)}.brand-mark span:last-child{right:7px;bottom:0;transform:rotate(3deg)}button{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid rgb(31 92 73 / 22%);outline-offset:2px}.app-shell{width:min(100%,760px);min-height:100svh;margin:0 auto;padding-bottom:calc(88px + env(safe-area-inset-bottom))}.app-header{position:sticky;z-index:20;top:0;display:flex;align-items:center;justify-content:space-between;padding:14px 20px 12px;background:#f7f1e5eb;border-bottom:1px solid rgb(217 208 191 / 54%);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.app-header__brand{display:flex;align-items:center;gap:11px}.app-header__mark{display:grid;width:38px;height:38px;place-items:center;color:var(--forest);background:var(--paper-light);border:1.5px solid var(--border);border-radius:12px;box-shadow:0 5px 14px #37362b12}.app-header p,.app-header strong{margin:0}.app-header .eyebrow{margin:0 0 2px;font-size:9px}.app-header strong{font-family:Georgia,"Noto Serif SC",serif;font-size:17px;color:var(--forest)}.connection-dot{display:inline-flex;align-items:center;gap:6px;padding:7px 10px;color:var(--forest);background:#e6efe9;border-radius:999px;font-size:11px;font-weight:700}.connection-dot:before{width:7px;height:7px;content:"";background:#5e9879;border-radius:50%}.connection-dot.is-idle{color:var(--muted);background:#ece8df}.connection-dot.is-idle:before{background:#a8a49b}.connection-dot.is-loading:before{animation:pulse-dot 1.2s infinite}.app-content{padding:20px 18px 30px}.page-stack{display:grid;gap:22px}h1,h2,h3,p{overflow-wrap:anywhere}h1,h2,h3{color:var(--ink)}.page-intro{display:flex;align-items:flex-end;justify-content:space-between;gap:18px}.page-intro h1,.section-heading h2{margin:3px 0 5px;font-family:Georgia,"Noto Serif SC",serif;font-weight:500;letter-spacing:-.025em}.page-intro h1{font-size:clamp(30px,8vw,42px)}.page-intro p:last-child,.section-copy{max-width:48ch;margin:0;color:var(--muted);font-size:14px;line-height:1.7}.result-count{display:grid;min-width:54px;height:54px;place-items:center;color:var(--forest);background:var(--forest-soft);border-radius:18px 18px 5px;font-family:Georgia,serif;font-size:23px;font-weight:700}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:13px}.section-heading h2{font-size:24px}.section-heading .eyebrow{margin:0}.eyebrow{color:var(--apricot);font-size:10px;font-weight:800;letter-spacing:.16em}.button,.icon-button,.text-action,.bottom-nav__link,.chip,.topic-card,.quick-card,.menu-row{border:0;cursor:pointer}.button{display:inline-flex;min-height:46px;align-items:center;justify-content:center;gap:8px;padding:10px 17px;border-radius:15px;font-size:14px;font-weight:700;transition:transform .16s ease,box-shadow .16s ease,background .16s ease}.button:active{transform:translateY(1px)}.button:disabled{cursor:not-allowed;opacity:.45}.button--primary{color:#fffdf8;background:var(--forest);box-shadow:0 9px 22px #1f5c492e}.button--soft{color:var(--forest);background:var(--forest-soft)}.button--ghost{color:var(--ink);background:var(--paper-light);border:1px solid var(--border)}.button--danger{color:#fff;background:#a84d43}.button--wide{width:100%}.button-row{display:grid;grid-template-columns:1fr 1fr;gap:8px}.button--small{min-height:40px;padding:8px 14px;font-size:12px}.icon-button{display:inline-grid;width:44px;height:44px;flex:0 0 44px;place-items:center;padding:0;color:var(--forest);background:var(--paper-light);border:1px solid var(--border);border-radius:14px}.icon-button.is-active,.icon-button.is-favorite{color:#8a6524;background:#f5e8c8;border-color:#e3ca8f}.icon-button--danger{color:#9b4c43}.text-action{display:inline-flex;min-height:36px;align-items:center;gap:7px;padding:0;color:var(--forest);background:transparent;font-size:13px;font-weight:700}.icon-fill{fill:currentColor}.bottom-nav{position:fixed;z-index:30;right:0;bottom:0;left:0;display:grid;width:min(100%,760px);grid-template-columns:repeat(5,1fr);margin:0 auto;padding:7px 8px calc(7px + env(safe-area-inset-bottom));background:#fffaf0f0;border-top:1px solid var(--border);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.bottom-nav__link{display:grid;min-height:56px;place-items:center;gap:2px;padding:5px 3px;color:#77786f;background:transparent;border-radius:14px;font-size:10px;font-weight:700;text-decoration:none}.bottom-nav__icon{display:grid;width:30px;height:27px;place-items:center;border-radius:10px}.bottom-nav__link.is-active{color:var(--forest)}.bottom-nav__link.is-active .bottom-nav__icon{color:#fff;background:var(--forest)}.hero-card{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 112px;gap:12px;overflow:hidden;padding:22px;background:linear-gradient(135deg,#fffaf0f5,#f3e7d0f5),var(--paper-light);border:1px solid #dfd2bd;border-radius:30px;box-shadow:0 20px 50px #493b2917}.hero-card:before{position:absolute;right:-34px;bottom:-50px;width:170px;height:170px;content:"";background:radial-gradient(circle,rgb(238 154 85 / 19%),transparent 66%)}.hero-card h1{max-width:10ch;margin:7px 0 10px;font-family:Georgia,"Noto Serif SC",serif;font-size:clamp(29px,7.8vw,41px);font-weight:500;line-height:1.08}.hero-card p:not(.eyebrow){max-width:30ch;margin:0 0 18px;color:var(--muted);font-size:13px;line-height:1.6}.progress-ring{position:relative;align-self:center;width:108px;height:128px}.progress-ring svg{width:108px;height:108px;transform:rotate(-90deg)}.progress-ring circle{fill:none;stroke-width:8}.progress-ring__track{stroke:#e3d9ca}.progress-ring__value{stroke:var(--apricot);stroke-linecap:round;transition:stroke-dashoffset .5s ease}.progress-ring__number{position:absolute;top:45px;left:0;width:108px;color:var(--forest);font-family:Georgia,serif;font-size:24px;font-weight:700;text-align:center}.progress-ring__label{position:absolute;bottom:0;left:0;width:108px;color:var(--muted);font-size:10px;font-weight:700;text-align:center}.stats-grid,.summary-panel{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.stat-card,.summary-panel>div{display:grid;gap:3px;padding:14px;background:var(--paper-light);border:1px solid var(--border);border-radius:18px}.stat-card span,.summary-panel span{color:var(--muted);font-size:11px}.stat-card strong,.summary-panel strong{color:var(--forest);font-family:Georgia,serif;font-size:25px}.stat-card--warm{background:#fff3e4}.quick-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.quick-card{display:flex;min-height:82px;align-items:center;gap:12px;padding:15px;color:var(--forest);background:var(--forest-soft);border-radius:20px;text-align:left}.quick-card:nth-child(2){color:#8f4e24;background:var(--apricot-soft)}.quick-card span{display:grid;gap:3px}.quick-card strong{color:currentColor;font-size:14px}.quick-card small{color:var(--muted);font-size:10px}.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.topic-card{position:relative;display:grid;min-height:100px;align-content:end;justify-items:start;overflow:hidden;padding:15px;color:var(--ink);background:var(--paper-light);border:1px solid var(--border);border-radius:20px;text-align:left}.topic-card:after{position:absolute;top:-18px;right:-18px;width:62px;height:62px;content:"";background:var(--topic-accent);border-radius:50%;opacity:.2}.topic-card__number{position:absolute;top:12px;left:15px;color:var(--topic-accent);font-family:Georgia,serif;font-size:14px;font-weight:700}.topic-card strong{position:relative;z-index:1;font-size:15px}.topic-card small{color:var(--muted);font-size:11px}.toolbar{display:flex;align-items:center;gap:9px}.search-field{display:flex;min-height:48px;align-items:center;gap:9px;padding:0 13px;color:var(--muted);background:var(--paper-light);border:1px solid var(--border);border-radius:15px}.search-field--grow{flex:1}.search-field input{width:100%;min-width:0;padding:0;color:var(--ink);background:transparent;border:0;outline:0}.batch-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px}.segmented{display:grid;grid-auto-columns:1fr;grid-auto-flow:column;padding:4px;background:#ebe4d8;border-radius:14px}.segmented button{min-height:38px;padding:6px 10px;color:var(--muted);background:transparent;border:0;border-radius:11px;font-size:12px;font-weight:700}.segmented button.is-active{color:var(--forest);background:var(--paper-light);box-shadow:0 3px 9px #302d2414}.segmented--compact{padding:3px}.segmented--compact button{min-height:34px;padding:4px 9px;font-size:11px}.overview-list{display:grid;gap:12px}.study-card{position:relative;display:grid;min-height:465px;align-content:space-between;gap:20px;overflow:hidden;padding:20px;background:linear-gradient(145deg,rgb(255 255 255 / 80%),transparent 55%),var(--paper-light);border:1px solid var(--border);border-left:5px solid var(--card-accent);border-radius:var(--radius-card);box-shadow:0 15px 35px #322c2117}.study-card:after{position:absolute;right:-34px;bottom:-36px;width:110px;height:110px;content:"";background:color-mix(in srgb,var(--card-accent) 12%,transparent);border-radius:50%;pointer-events:none}.study-card--compact{min-height:0;gap:14px;padding:16px;border-left-width:4px;border-radius:20px}.study-card__topline{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}.topic-pill{position:relative;z-index:1;padding:7px 10px;color:var(--forest);background:var(--forest-soft);border-radius:999px;font-size:10px;font-weight:700}.status-badges{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:5px}.status-badge{display:inline-flex;align-items:center;gap:4px;padding:5px 8px;border-radius:999px;font-size:9px;font-weight:800}.status-badge--favorite{color:#7e5b1d;background:#f5e8c8}.status-badge--mastery-0{color:#367158;background:#e0efe7}.status-badge--mastery-1,.status-badge--mastery-2{color:#7c661d;background:#f5edc7}.status-badge--mastery-3,.status-badge--mastery-4{color:#965021;background:#f8e0cb}.status-badge--mastery-5{color:#953e37;background:#f6d9d5}.study-card__term-row{display:flex;align-items:center;justify-content:space-between;gap:16px}.study-card h2{margin:5px 0;font-family:Georgia,"Noto Serif SC",serif;font-size:clamp(35px,10vw,54px);font-weight:500;line-height:1.06}.study-card--compact h2{font-size:clamp(24px,7vw,34px)}.card-kicker{margin:0;color:var(--muted);font-size:9px;font-weight:800;letter-spacing:.13em}.phonetic{color:var(--muted);font-family:Georgia,serif;font-size:15px}.phonetic-line{display:flex;flex-wrap:wrap;align-items:center;gap:7px;margin-top:8px}.scene-label{color:#2467ae;font-size:12px;font-weight:700}.round-action{display:grid;width:52px;height:52px;flex:0 0 52px;place-items:center;color:var(--forest);background:var(--forest-soft);border:0;border-radius:50%}.prompt-card{position:relative;z-index:1;display:flex;gap:12px;padding:15px;color:#4e4a3f;background:#f5eee0;border:1px dashed #d8c6a9;border-radius:18px}.prompt-card p:last-child{margin:5px 0 0;font-family:Georgia,"Noto Serif SC",serif;font-size:15px;line-height:1.55}.prompt-card__icon{display:grid;width:34px;height:34px;flex:0 0 34px;place-items:center;color:#95501f;background:var(--apricot-soft);border-radius:12px}.study-card__actions{position:relative;z-index:1;display:flex;align-items:center;gap:8px}.study-card__actions .button{margin-right:auto}.mastery-dot{width:15px;height:15px;border:2px solid currentColor;border-radius:50%}.mastery-dot--0{color:#4f8a68;background:#cde5d5}.mastery-dot--1,.mastery-dot--2{color:#a58429;background:#f4e9b7}.mastery-dot--3,.mastery-dot--4{color:#bd6d30;background:#f5d6bb}.mastery-dot--5{color:#b54e45;background:#f4cac7}.card-detail{position:relative;z-index:1;display:grid;gap:19px}.card-detail section{display:grid;gap:7px}.card-translation{margin:5px 0 0;font-size:clamp(27px,7vw,39px)!important}.example-sentence{margin:0;color:var(--ink);font-family:Georgia,"Noto Serif SC",serif;font-size:18px;line-height:1.55}.example-translation,.usage-note p:last-child{margin:0;color:var(--muted);font-size:13px;line-height:1.65}.tag-row{display:flex;flex-wrap:wrap;gap:6px}.tag{padding:6px 9px;color:#6c4d28;background:#f5e6cf;border-radius:8px;font-size:11px}.usage-note{padding:12px;background:#f4f0e6;border-radius:14px}.mastery-picker{display:grid;grid-template-columns:repeat(6,1fr);gap:5px}.mastery-chip{min-width:0;min-height:38px;padding:0;color:var(--muted);background:#f0eadf;border:1px solid transparent;border-radius:12px;font-weight:800}.mastery-chip.is-active{color:#fff;background:var(--forest);border-color:var(--forest)}.mastery-picker--card{position:relative;z-index:2;padding-top:2px}.chip-grid{display:flex;flex-wrap:wrap;gap:6px}.chip{min-height:38px;padding:6px 11px;color:var(--muted);background:#eee7db;border:1px solid transparent;border-radius:999px;font-size:11px;font-weight:700}.chip.is-active{color:var(--forest);background:var(--forest-soft);border-color:#b7cfc0}.empty-state,.error-state,.loading-state,.training-empty{display:grid;min-height:320px;place-content:center;justify-items:center;gap:10px;padding:30px;color:var(--muted);text-align:center}.empty-state h1,.empty-state h2,.error-state h1,.training-empty h1{margin:0;font-family:Georgia,"Noto Serif SC",serif}.empty-state p,.error-state p,.training-empty p{max-width:36ch;margin:0;line-height:1.65}.empty-state__icon{display:grid;width:68px;height:68px;place-items:center;color:var(--forest);background:var(--forest-soft);border-radius:22px 22px 7px}.empty-state--page{min-height:calc(100svh - 150px)}.modal-backdrop{position:fixed;z-index:100;inset:0;display:flex;align-items:flex-end;justify-content:center;padding:16px;background:#1f272375;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.modal-panel{width:min(100%,720px);max-height:min(92svh,880px);overflow:auto;background:var(--paper);border:1px solid #d6c9b5;border-radius:28px;box-shadow:0 24px 80px #171c1952;animation:modal-up .22s ease-out}.modal-panel__header{position:sticky;z-index:3;top:0;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding:20px 20px 13px;background:#f7f1e5f5;border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.modal-panel__header h2{margin:0;font-family:Georgia,"Noto Serif SC",serif;font-size:25px}.modal-panel__header p{max-width:46ch;margin:5px 0 0;color:var(--muted);font-size:12px;line-height:1.55}.modal-panel__body{display:grid;gap:16px;padding:19px 20px}.modal-panel__footer{position:sticky;bottom:0;display:grid;grid-template-columns:1fr 1.35fr;gap:9px;padding:13px 20px calc(16px + env(safe-area-inset-bottom));background:#f7f1e5f5;border-top:1px solid var(--border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.modal-warning{margin:0;padding:13px;color:#8e453d;background:#f7e2df;border-radius:14px;font-size:13px;line-height:1.6}.filter-group{display:grid;gap:10px;margin:0;padding:0;border:0}.filter-group legend,.field-label{margin-bottom:7px;color:var(--ink);font-size:13px;font-weight:800}.field{display:grid;gap:7px}.field>span{color:var(--ink);font-size:12px;font-weight:800}.field input,.field textarea,.field select,.secret-field{width:100%;color:var(--ink);background:var(--paper-light);border:1px solid var(--border);border-radius:14px;outline:0}.field input,.field select{min-height:48px;padding:10px 13px}.field textarea{padding:12px 13px;resize:vertical;line-height:1.55}.field input::placeholder,.field textarea::placeholder{color:#aaa394}.form-card,.settings-section{display:grid;gap:17px;padding:18px;background:#fffaf0cc;border:1px solid var(--border);border-radius:24px}.form-card .filter-group{padding:13px;background:#f3ede2;border-radius:16px}.secret-field{display:flex;align-items:center;padding-right:4px}.secret-field input{border:0}.secret-field .icon-button{border:0;background:transparent}.inline-notice{display:flex;align-items:center;gap:8px;padding:11px 13px;color:var(--forest);background:var(--forest-soft);border-radius:14px;font-size:12px;font-weight:700}.inline-status{margin:0;padding:11px 13px;color:var(--forest);background:#eef3ed;border:1px solid #c9dacf;border-radius:13px;font-size:12px;line-height:1.55}.preview-switch{justify-self:center}.trash-list,.menu-list,.guide-list{display:grid;gap:10px}.trash-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:15px;background:var(--paper-light);border:1px solid var(--border);border-radius:18px}.trash-item h2{margin:0 0 3px;font-family:Georgia,serif;font-size:20px}.trash-item p,.trash-item small{margin:0;color:var(--muted);font-size:11px}.trash-item__actions{display:flex;flex:0 0 auto;align-items:center;gap:6px}.menu-row{display:grid;grid-template-columns:44px minmax(0,1fr) 20px;align-items:center;gap:12px;padding:14px;color:var(--ink);background:var(--paper-light);border:1px solid var(--border);border-radius:18px;text-decoration:none}.menu-row__icon{display:grid;width:44px;height:44px;place-items:center;color:var(--forest);background:var(--forest-soft);border-radius:14px}.menu-row>span:nth-child(2){display:grid;gap:3px}.menu-row strong{font-size:14px}.menu-row small{color:var(--muted);font-size:11px;line-height:1.45}.privacy-note{margin:0;padding:14px;color:var(--muted);background:#eee8dc;border-radius:14px;font-size:11px;line-height:1.65}.guide-item{display:flex;gap:12px;padding:16px;background:var(--paper-light);border:1px solid var(--border);border-radius:18px}.guide-item>span{display:grid;width:32px;height:32px;flex:0 0 32px;place-items:center;color:var(--forest);background:var(--forest-soft);border-radius:11px}.guide-item h2{margin:0 0 5px;font-size:15px}.guide-item p{margin:0;color:var(--muted);font-size:12px;line-height:1.72}.training-page{display:grid;min-height:calc(100svh - 66px);grid-template-rows:auto minmax(0,1fr) auto;gap:15px;padding:7px 0 18px}.training-header{display:grid;grid-template-columns:44px minmax(0,1fr) 44px;align-items:center;gap:12px}.training-progress{display:grid;gap:6px;color:var(--muted);font-size:11px;font-weight:700;text-align:center}.training-progress>div{height:5px;overflow:hidden;background:#e3dbce;border-radius:999px}.training-progress i{display:block;height:100%;background:var(--apricot);border-radius:inherit;transition:width .25s ease}.training-stage{align-self:start;display:grid;gap:15px}.training-footer{display:grid;grid-template-columns:1fr 1.5fr;gap:9px}.speech-practice{display:grid;gap:15px;padding:18px;background:#f1eadf;border:1px solid #d7cbbb;border-radius:24px}.speech-practice .section-heading{margin:0}.speech-practice .section-heading h2{font-size:22px}.record-row{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:13px}.record-button{display:grid;width:64px;height:64px;place-items:center;color:#fff;background:var(--forest);border:0;border-radius:50%;box-shadow:0 10px 24px #1f5c493d}.record-button.is-recording{background:#b65445;animation:record-pulse 1.6s ease-in-out infinite}.record-meta{display:grid;gap:3px}.record-meta strong{font-size:13px}.record-meta span{color:var(--muted);font-size:11px}.audio-player{width:100%;height:42px;grid-column:1 / -1}.feedback-panel{display:grid;gap:15px;padding:16px;background:var(--paper-light);border:1px solid var(--border);border-radius:18px}.feedback-score{display:flex;align-items:flex-end;justify-content:space-between;gap:16px}.feedback-score strong{color:var(--forest);font-family:Georgia,serif;font-size:46px;line-height:.95}.feedback-score p{max-width:25ch;margin:0;color:var(--muted);font-size:10px;line-height:1.55;text-align:right}.criteria-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:6px}.criteria-grid>div{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:9px 10px;background:#f0ebe1;border-radius:11px}.criteria-grid span{color:var(--muted);font-size:10px}.criteria-grid strong{color:var(--forest);font-family:Georgia,serif;font-size:17px}.estimate-note{margin:0;padding:9px 10px;color:#8b5e2d;background:#f8e8d5;border-radius:11px;font-size:10px;line-height:1.55}.feedback-copy{display:grid;gap:5px}.feedback-copy h3{margin:0;font-size:13px}.feedback-copy p{margin:0;color:#555d57;font-size:12px;line-height:1.7;white-space:pre-wrap}@keyframes pulse-dot{50%{opacity:.35}}@keyframes modal-up{0%{transform:translateY(18px);opacity:0}}@keyframes record-pulse{50%{box-shadow:0 10px 24px #b6544547,0 0 0 10px #b6544521}}@media(min-width:620px){.app-content{padding:28px 28px 38px}.topic-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.overview-list{grid-template-columns:repeat(2,minmax(0,1fr))}.modal-backdrop{align-items:center}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}