:root{--paper: #d7dee8;--sheet: #f3f6fa;--ink: #152033;--ink-soft: #3a4a63;--rule: #b7c3d4;--wash: #3d5f8a;--stamp: #b4272a;--stamp-soft: #f3d4d4;--ok-ink: #1f4d3a;--shadow: 0 10px 28px rgba(21, 32, 51, .08);--safe-bottom: env(safe-area-inset-bottom, 0px);--display: "Klee One", "Yu Mincho", "Hiragino Mincho ProN", serif;--body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif}*{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0;color:var(--ink);font-family:var(--body);background:linear-gradient(180deg,rgba(21,32,51,.03),transparent 120px),repeating-linear-gradient(180deg,transparent,transparent 27px,rgba(183,195,212,.35) 28px),var(--paper)}button,input,select,textarea{font:inherit;color:inherit}a{color:var(--wash);text-decoration:none}button{cursor:pointer}.app-shell{min-height:100dvh;padding-bottom:calc(72px + var(--safe-bottom))}.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px 10px;background:color-mix(in srgb,var(--paper) 88%,white);border-bottom:1px solid var(--rule);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.brand{display:flex;flex-direction:column;gap:4px;min-width:0}.brand-lockup{display:flex;align-items:center;gap:8px;min-width:0}.brand-lockup.is-login{gap:12px;margin-bottom:12px}.brand-seal{flex:0 0 auto;display:block;border-radius:8px;box-shadow:0 1px #1520331f}.brand-name{display:flex;flex-direction:column;font-family:var(--display);font-weight:600;line-height:1.15;color:var(--ink)}.brand-name span:first-child{font-size:16px;letter-spacing:.08em}.brand-name span:last-child{font-size:12px;letter-spacing:.16em;color:var(--stamp)}.brand-lockup.is-login .brand-name span:first-child{font-size:24px}.brand-lockup.is-login .brand-name span:last-child{font-size:15px}.brand-sub{font-size:11px;letter-spacing:.12em;color:var(--ink-soft)}.back{display:inline-flex;align-items:center;min-height:44px;margin:-8px 0;padding-right:12px;color:var(--ink);font-size:16px}.back:before{content:"←";margin-right:8px;font-family:var(--display);font-size:20px;line-height:1}.count-chip{font-size:12px;color:var(--ink-soft);border:1px dashed var(--rule);padding:4px 8px}.top-actions{display:flex;align-items:center;gap:8px}.msg-list{display:flex;flex-direction:column;gap:10px}.msg-item{background:var(--sheet);border:1px solid var(--rule);padding:10px 12px}.msg-item p{margin:4px 0 0}.msg-meta{font-size:12px;color:var(--ink-soft)}.page{width:min(720px,100%);margin:0 auto;padding:14px 14px 24px}.search-row,.filter-row{display:flex;gap:8px;margin-bottom:10px}.search-row input,.filter-row select,.field input,.field textarea,.field select,.login-card input{width:100%;border:1px solid var(--rule);background:var(--sheet);padding:11px 12px;border-radius:2px}.filter-row{overflow-x:auto;padding-bottom:4px}.filter-row select{min-width:108px}.plan-bar{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:10px;padding:10px 12px;background:var(--sheet);border:1px solid var(--rule);color:var(--ink)}.plan-bar-edit{color:var(--stamp);font-size:13px;letter-spacing:.08em}.list{display:flex;flex-direction:column;gap:8px}.row-card{display:block;background:var(--sheet);border:1px solid var(--rule);box-shadow:var(--shadow);padding:12px 12px 10px;color:inherit}.row-card.has-sketch{display:grid;grid-template-columns:1fr 88px;gap:10px;align-items:center}.row-card:hover{border-color:color-mix(in srgb,var(--wash) 45%,var(--rule))}.row-kana{font-size:12px;color:var(--ink-soft)}.row-lemma{font-family:var(--display);font-size:26px;line-height:1.2;margin:2px 0 4px}.row-lemma ruby rt{font-family:var(--body);font-size:11px;color:var(--ink-soft)}.row-mean{font-size:14px}.row-meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.tag{font-size:11px;letter-spacing:.06em;border:1px solid var(--rule);padding:2px 6px;color:var(--ink-soft)}.tag.stamp{border-color:var(--stamp);color:var(--stamp)}.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:20;display:grid;grid-template-columns:repeat(3,1fr);background:#eef2f7;border-top:1px solid var(--rule);padding-bottom:var(--safe-bottom)}.tabbar.tabs-4{grid-template-columns:repeat(4,1fr)}.tabbar a.tab-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;min-height:64px;color:var(--ink-soft);font-size:11px;letter-spacing:.08em;position:relative;transition:color .2s ease,transform .22s cubic-bezier(.2,.7,.2,1)}.tabbar a.tab-item .tab-icon{width:22px;height:22px;display:block}.tab-icon-wrap{position:relative}.tab-badge{position:absolute;top:-6px;right:-10px;min-width:16px;height:16px;padding:0 4px;border-radius:99px;background:var(--stamp);color:#fff;font-size:10px;line-height:16px;text-align:center;font-style:normal}.tabbar a.tab-item.active{color:var(--stamp);transform:translateY(-2px)}.tabbar a.tab-item:before{content:"";position:absolute;top:6px;width:16px;height:3px;background:var(--stamp);border-radius:99px;opacity:0;transform:scaleX(.4);transition:opacity .2s ease,transform .22s cubic-bezier(.2,.7,.2,1)}.tabbar a.tab-item.active:before{opacity:1;transform:scaleX(1)}.menu-btn{width:36px;height:36px;display:flex;flex-direction:column;justify-content:center;gap:5px;padding:8px 7px;border:1px solid var(--rule);background:var(--sheet)}.menu-btn span{display:block;height:1.5px;background:var(--ink);transform-origin:center;transition:transform .22s cubic-bezier(.2,.7,.2,1),opacity .2s ease}.menu-btn.is-open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}.menu-btn.is-open span:nth-child(2){opacity:0}.menu-btn.is-open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}.drawer-root{position:fixed;top:0;right:0;bottom:0;left:0;z-index:30}.drawer-mask{position:absolute;top:0;right:0;bottom:0;left:0;border:0;background:#15203359;opacity:0;transition:opacity .22s cubic-bezier(.2,.7,.2,1)}.drawer-root.is-open .drawer-mask{opacity:1}.learn-drawer{position:absolute;left:0;top:0;bottom:0;width:min(280px,82vw);background:var(--sheet);border-right:1px solid var(--rule);padding:22px 16px;display:flex;flex-direction:column;gap:2px;transform:translate(-100%);transition:transform .22s cubic-bezier(.2,.7,.2,1)}.drawer-root.is-open .learn-drawer{transform:translate(0)}.drawer-title{font-family:var(--display);font-size:22px;margin-bottom:12px}.learn-drawer a{display:block;padding:10px 8px;color:var(--ink-soft);letter-spacing:.12em;transition:color .2s ease,background .2s ease,box-shadow .2s ease}.learn-drawer a.active{color:var(--stamp);box-shadow:inset 3px 0 var(--stamp);background:var(--stamp-soft)}.class-tabs{display:flex;gap:8px;margin-bottom:12px}.inbox-page{padding-top:8px}.conv-block+.conv-block{margin-top:18px}.conv-section{font-size:12px;letter-spacing:.16em;color:var(--ink-soft);margin:0 4px 6px}.conv-list{background:var(--sheet);border:1px solid var(--rule);overflow:hidden}.conv-row{display:flex;align-items:center;gap:12px;padding:12px;color:inherit;border-bottom:1px solid color-mix(in srgb,var(--rule) 70%,white)}.conv-row:last-child{border-bottom:0}.conv-row:hover{background:color-mix(in srgb,var(--sheet) 70%,white)}.conv-avatar{flex:0 0 44px;width:44px;height:44px;border-radius:10px;display:grid;place-items:center;color:#f4efe4;font-size:16px;background:var(--wash)}.conv-avatar.is-dm{background:#1f4d3a}.conv-avatar.is-system{background:#5a6578}.conv-main{min-width:0;flex:1}.conv-line{display:flex;align-items:baseline;justify-content:space-between;gap:10px}.conv-line+.conv-line{margin-top:4px}.conv-title{font-size:16px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv-sub{margin-left:6px;font-size:12px;font-weight:400;color:var(--ink-soft)}.conv-time{flex:0 0 auto;font-size:11px;color:var(--ink-soft)}.conv-preview{min-width:0;flex:1;font-size:13px;color:var(--ink-soft);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv-unread{flex:0 0 auto;min-width:18px;height:18px;padding:0 5px;border-radius:99px;background:var(--stamp);color:#fff;font-size:11px;line-height:18px;text-align:center}.chat-page{width:100%;margin:0;display:flex;flex-direction:column;height:calc(100dvh - 56px - 72px - var(--safe-bottom));min-height:0;background:linear-gradient(180deg,rgba(61,95,138,.06),transparent 90px),#c9d3e0}.chat-page.has-dock{padding-bottom:62px}.chat-head{position:sticky;top:0;z-index:2;padding:8px 14px 10px;background:color-mix(in srgb,#c9d3e0 82%,white);border-bottom:1px solid color-mix(in srgb,var(--rule) 70%,white)}.chat-head-title,.chat-scroller,.chat-error{width:min(720px,100%);margin-left:auto;margin-right:auto}.chat-head-title{font-size:15px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-error{margin:8px 14px 0}.chat-scroller{flex:1;display:flex;flex-direction:column;gap:2px;padding:12px 12px 16px}.chat-scroller:before{content:"";flex:1 1 auto}.chat-day,.chat-sys{align-self:center;width:max-content;max-width:80%;margin:8px auto;padding:4px 10px;border-radius:99px;background:#15203314;color:var(--ink-soft);font-size:12px;line-height:1.45;text-align:center}.chat-row{display:flex;align-items:flex-start;gap:8px;margin:8px 0 2px}.chat-row.is-mine{flex-direction:row-reverse}.chat-row.is-stack{margin-top:2px}.chat-avatar{flex:0 0 36px;width:36px;height:36px;border-radius:8px;display:grid;place-items:center;background:var(--wash);color:#f4efe4;font-size:14px}.chat-avatar.is-ghost{background:transparent;color:transparent}.chat-col{display:flex;flex-direction:column;align-items:flex-start;max-width:78%}.chat-row.is-mine .chat-col{align-items:flex-end}.chat-name{margin:0 4px 4px;font-size:12px;color:var(--ink-soft)}.chat-bubble{padding:9px 12px;border-radius:12px 12px 12px 4px;background:var(--sheet);color:var(--ink);font-size:15px;line-height:1.55;word-break:break-word;white-space:pre-wrap;box-shadow:0 1px #1520330a}.chat-bubble.is-mine{background:#3d5f8a;color:#f4efe4;border-radius:12px 12px 4px}.chat-time{margin-top:3px;padding:0 4px;font-size:11px;color:var(--ink-soft)}.chat-dock{position:fixed;left:0;right:0;bottom:calc(72px + var(--safe-bottom));z-index:15;display:flex;align-items:center;gap:8px;padding:8px max(12px,calc((100% - 720px)/2 + 12px));background:#eef2f7;border-top:1px solid var(--rule)}.chat-dock input{flex:1;min-width:0;border:0;border-radius:20px;background:#fff;padding:10px 14px;outline:none}.chat-dock input:focus{box-shadow:0 0 0 2px color-mix(in srgb,var(--wash) 28%,transparent)}.chat-send{flex:0 0 auto;min-width:52px;height:38px;padding:0 14px;border:0;border-radius:19px;background:var(--wash);color:#fff}.chat-send:disabled{opacity:.35;cursor:default}.admin-dm-grid{display:grid;grid-template-columns:minmax(180px,240px) 1fr;gap:16px}.admin-dm-grid .row-card{width:100%;text-align:left;background:var(--sheet)}.admin-chat{min-height:320px;max-height:52vh;overflow:auto;padding:8px;border:1px solid var(--rule);background:var(--sheet)}.row-card.is-on{outline:2px solid var(--stamp)}.flip-stage{perspective:1100px;margin:8px 0 16px}.flip-card{position:relative;min-height:280px;transform-style:preserve-3d;transition:transform .55s cubic-bezier(.2,.7,.2,1);cursor:pointer}.flip-card.is-back{transform:rotateY(180deg)}.face{position:absolute;top:0;right:0;bottom:0;left:0;background:var(--sheet);border:1px solid var(--rule);box-shadow:var(--shadow);backface-visibility:hidden;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:24px 18px;text-align:center}.face.back{transform:rotateY(180deg)}.face-kana{font-size:14px;color:var(--ink-soft)}.face-lemma{font-family:var(--display);font-size:clamp(40px,12vw,64px);line-height:1.15;margin:8px 0}.face-mean{font-size:22px;margin-bottom:10px}.hint{font-size:12px;color:var(--ink-soft)}.actions{display:flex;gap:8px}.actions button,.btn{flex:1;border:1px solid var(--ink);background:transparent;padding:11px 12px;transition:background .2s ease,color .2s ease,border-color .2s ease}.btn.primary,.actions .master{background:var(--ink);color:#f3f6fa}.actions .new{border-color:var(--stamp);color:var(--stamp)}.btn.ghost{border-color:var(--rule)}.speak-wrap{margin-top:10px}.speak{margin-top:0;border:0;background:transparent;color:var(--wash);text-decoration:underline;text-underline-offset:3px}.speak.is-on{color:var(--stamp)}.speak-hint{margin:8px 0 0;font-size:12px;line-height:1.5;color:var(--ink-soft);text-align:left}.sketch-frame,.diagram-frame{margin:14px 0 4px;background:var(--sheet);border:1px solid var(--rule);padding:10px}.sketch-frame svg{width:100%;display:block;border-radius:6px}.sketch-frame figcaption,.diagram-frame figcaption{margin-top:8px;font-size:13px;color:var(--ink-soft)}.diagram-frame figcaption{display:flex;flex-direction:column;gap:4px}.diagram-frame figcaption strong{color:var(--ink);font-weight:600}.sketch-mini,.diagram-mini{margin:0;width:88px;height:72px;overflow:hidden;border:1px solid var(--rule);background:var(--sheet)}.sketch-mini svg{width:140%;height:140%;margin:-16% 0 0 -16%}.diagram-mini .diagram-rail{padding:8px 6px;gap:2px}.diagram-rail{display:flex;flex-wrap:wrap;align-items:center;gap:6px}.diagram-step{display:inline-flex;align-items:center;gap:6px}.diagram-brick{font-family:var(--display);font-size:16px;border:1px solid var(--ink);padding:4px 8px}.diagram-brick.is-slot{color:var(--stamp);border:1px dashed var(--stamp)}.diagram-step i{font-style:normal;color:var(--stamp)}.diagram-mini .diagram-brick{font-size:11px;padding:2px 4px}.speak-dock{position:fixed;left:50%;bottom:calc(76px + var(--safe-bottom));z-index:25;transform:translate(-50%);border:1px solid var(--stamp);background:#fff;color:var(--stamp);padding:10px 18px;box-shadow:var(--shadow)}.exam-card .note{margin-top:10px}.quiz-prompt{white-space:pre-wrap}.example,.note,.panel{background:var(--sheet);border:1px solid var(--rule);padding:12px;margin-top:10px}.example .jp,.essay-trans,.note p,.panel p{margin:.35em 0 0}.example .jp{font-family:var(--display);font-size:20px}.stamp-seal{display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;border:3px solid var(--stamp);color:var(--stamp);border-radius:50%;transform:rotate(-12deg);font-family:var(--display);font-size:18px;margin-bottom:8px}.genko{--cell: 28px;display:grid;grid-template-columns:repeat(10,var(--cell));gap:0;width:calc(var(--cell) * 10);margin:12px auto;background:var(--sheet);border:2px solid #8ea0b8;box-shadow:var(--shadow)}.genko i{width:var(--cell);height:var(--cell);border:.5px solid #c5d0de;display:flex;align-items:center;justify-content:center;font-family:var(--display);font-size:17px;font-style:normal;line-height:1}.quiz-prompt{font-family:var(--display);font-size:34px;text-align:center;margin:18px 0 16px}.option{display:block;width:100%;text-align:left;margin-bottom:8px;padding:12px;border:1px solid var(--rule);background:var(--sheet);transition:background .2s ease,border-color .2s ease}.option.right{border-color:var(--ok-ink);background:#e4f0e8}.option.wrong{border-color:var(--stamp);background:var(--stamp-soft)}.score{font-family:var(--display);font-size:56px;text-align:center;margin:20px 0 8px}.empty{padding:28px 8px;color:var(--ink-soft);text-align:center}.admin-shell{min-height:100dvh;display:grid;grid-template-columns:200px 1fr}.admin-nav{background:#1b283c;color:#e8eef6;padding:18px 14px}.admin-nav h1{font-family:var(--display);font-size:24px;margin:0 0 16px}.admin-nav a{display:flex;align-items:center;justify-content:space-between;gap:8px;color:#d5deea;padding:8px 0}.nav-badge{min-width:18px;height:18px;padding:0 5px;border-radius:99px;background:var(--stamp);color:#fff;font-size:10px;line-height:18px;text-align:center;font-style:normal}.admin-nav a.active{color:#fff;box-shadow:inset 3px 0 var(--stamp);padding-left:8px}.admin-main{padding:18px;overflow:auto}.admin-table-wrap{overflow:auto;background:var(--sheet);border:1px solid var(--rule)}.pager{display:flex;align-items:center;gap:10px;margin:12px 0}.pager .btn{flex:0 0 auto}table{width:100%;border-collapse:collapse;font-size:13px}th,td{border-bottom:1px solid var(--rule);padding:8px;text-align:left;vertical-align:top}.field{margin-bottom:10px}.field label{display:block;font-size:12px;color:var(--ink-soft);margin-bottom:4px}.login-wrap{min-height:100dvh;display:grid;place-items:center;padding:20px}.login-card{width:min(380px,100%);background:var(--sheet);border:1px solid var(--rule);padding:24px;box-shadow:var(--shadow)}.login-card h1{font-family:var(--display);margin:0 0 8px;font-size:inherit;font-weight:inherit}.error{color:var(--stamp);font-size:13px}@media(max-width:760px){.admin-shell{grid-template-columns:1fr}.admin-nav{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center}.admin-nav h1{width:100%;margin-bottom:4px}}.picker-list{display:grid;gap:8px;max-height:280px;overflow:auto;margin-top:8px}.picker-item{text-align:left;border:1px solid var(--rule);background:var(--sheet);padding:8px 10px;color:var(--ink)}.picker-item.on{border-color:var(--stamp);background:var(--stamp-soft)}.hw-q-list{list-style:none;padding:0;margin:12px 0 0;display:grid;gap:14px}.hw-q{border:1px solid var(--rule);background:var(--sheet);padding:12px 12px 10px}.hw-q-head{display:flex;align-items:center;gap:6px;margin-bottom:8px}.hw-q-n{min-width:22px;height:22px;border-radius:99px;background:var(--stamp-soft);color:var(--stamp);font-size:12px;line-height:22px;text-align:center}.hw-q-prompt{font-size:16px;line-height:1.55;margin-bottom:8px}.hw-q-opts{margin:0 0 8px;padding-left:18px;color:var(--ink-soft)}.hw-q-opts .is-answer{color:var(--stamp);font-weight:600}.hw-q-exp{margin:6px 0 0;color:var(--ink-soft);font-size:13px}.check-row{display:flex;align-items:center;gap:8px;margin:8px 0 14px;font-size:14px}.book-card{display:grid;grid-template-columns:52px 1fr;gap:12px;align-items:center}.book-spine{min-height:72px;display:grid;place-items:center;writing-mode:vertical-rl;font-family:var(--display);background:#1f3554;color:#f4efe4;letter-spacing:.12em;font-size:13px}.dialogue p{margin:0 0 10px}.dialogue-jp{display:block;font-family:var(--display)}.dialogue-zh{display:block;color:var(--ink-soft);font-size:13px;margin-top:2px}.dict-types .btn{flex:none;padding:7px 10px}.dict-group{margin-top:18px}.dict-group-title{font-size:13px;letter-spacing:.08em;color:var(--ink-soft);margin-bottom:8px}.dict-snippet{margin-top:6px;font-size:13px;color:var(--ink-soft)}@media(prefers-reduced-motion:reduce){.flip-card,.drawer-mask,.learn-drawer,.menu-btn span,.tabbar a.tab-item,.tabbar a.tab-item:before,.learn-drawer a,.btn,.actions button,.option{transition:none}}:root{--paper: #edf2fa;--sheet: #ffffff;--ink: #17233f;--ink-soft: #63708a;--rule: #d9e1ee;--wash: #4356d6;--stamp: #ef6245;--stamp-soft: #fff0ec;--ok-ink: #087a63;--shadow: 0 12px 32px rgba(31, 48, 88, .08);--display: "Klee One", "Noto Serif JP", "Yu Mincho", serif}body{background:var(--paper);letter-spacing:.01em}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;z-index:-1;pointer-events:none;background-image:radial-gradient(rgba(67,86,214,.08) .75px,transparent .75px);background-size:18px 18px;opacity:.35}.app-shell{padding-bottom:calc(76px + var(--safe-bottom))}.topbar{min-height:64px;padding:10px 16px;background:#ffffffe6;border-bottom-color:#d9e1eecc;box-shadow:0 1px #17233f05}.brand{gap:2px}.brand-name span:first-child{font-size:17px;letter-spacing:.05em}.brand-name span:last-child{color:var(--wash)}.brand-sub{font-size:10px;color:var(--ink-soft);letter-spacing:.06em}.count-chip{border:0;border-radius:999px;background:#f0f3ff;color:var(--wash);padding:6px 9px}.top-actions .speak{color:var(--ink-soft);text-decoration:none;font-size:13px}.header-avatar{display:grid;width:34px;height:34px;place-items:center;overflow:hidden;border-radius:11px;background:#e8edff;color:var(--wash);font-size:14px;font-weight:700}.header-avatar img{width:100%;height:100%;object-fit:cover}.app-frame{min-width:0}.study-rail{display:none}.app-content{min-width:0}.page{width:min(800px,100%);padding:18px 14px 28px}.plan-bar{position:relative;min-height:88px;align-items:center;gap:12px;margin-bottom:16px;padding:12px;overflow:hidden;border:0;border-radius:18px;color:#fff;background:#273b87;box-shadow:0 12px 24px #273b8733}.plan-bar:after{content:"あ";position:absolute;right:16px;bottom:-27px;color:#ffffff14;font:100px/1 var(--display)}.plan-ring{position:relative;z-index:1;display:grid;width:56px;height:56px;place-items:center;border-radius:50%;background:conic-gradient(#ffce68 var(--progress),rgba(255,255,255,.2) 0)}.plan-ring:after{content:"%";position:absolute;font-size:10px;color:#273b87;transform:translate(8px,7px)}.plan-ring b{display:grid;width:44px;height:44px;place-items:center;border-radius:50%;color:#273b87;background:#fff;font-size:15px}.plan-copy{position:relative;z-index:1;display:grid;gap:2px;min-width:0}.plan-copy small,.plan-copy em{color:#ffffffb3;font-size:11px;font-style:normal}.plan-copy strong{font-size:16px;letter-spacing:.02em}.plan-arrow{position:relative;z-index:1;margin-left:auto;font-size:28px;font-weight:300}.learn-tabs,.class-tabs{display:flex;gap:4px;margin-bottom:14px;padding:4px;overflow-x:auto;border-radius:14px;background:#e2e8f4}.learn-tabs .btn,.class-tabs .btn{flex:1 0 max-content;padding:9px 12px;border:0;border-radius:10px;color:var(--ink-soft);background:transparent;font-size:13px}.learn-tabs .btn.primary,.class-tabs .btn.primary{color:var(--ink);background:#fff;box-shadow:0 2px 7px #2131571a}.search-row{margin-bottom:10px}.search-row:before{content:"⌕";align-self:center;margin-right:-38px;z-index:1;color:var(--ink-soft);font-size:23px;pointer-events:none}.search-row input{padding-left:40px;border:1px solid transparent;border-radius:14px;box-shadow:0 2px 10px #1f30580a}.search-row input:focus,.filter-row select:focus,.field input:focus,.field textarea:focus{outline:3px solid rgba(67,86,214,.16);border-color:var(--wash)}.filter-row{gap:7px;margin-bottom:14px}.filter-row select{min-width:132px;border:0;border-radius:999px;background:#fff;box-shadow:0 2px 8px #1f30580a}.list{gap:10px}.row-card{border:1px solid rgba(217,225,238,.9);border-radius:16px;padding:14px;box-shadow:0 5px 16px #1f30580b;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.row-card.has-sketch{grid-template-columns:minmax(0,1fr) 96px}.row-card:hover{transform:translateY(-2px);border-color:#b9c5ed;box-shadow:0 12px 24px #1f30581a}.row-kana{color:var(--wash);font-size:11px;font-weight:700;letter-spacing:.08em}.row-lemma{font-family:var(--display);font-size:27px}.row-mean{color:#41506c;line-height:1.55}.row-meta{gap:5px;margin-top:9px}.tag{border:0;border-radius:999px;padding:4px 7px;background:#edf1fa;color:#5e6c88;font-size:10px}.tag.stamp{background:var(--stamp-soft);color:#d65035}.sketch-frame{position:relative;margin:18px 0 8px;padding:7px;overflow:hidden;border:1px solid rgba(194,208,234,.92);border-radius:22px;background:linear-gradient(135deg,#fff,#f3f6fe);box-shadow:0 14px 32px #30498b1a}.sketch-frame:before{content:"";position:absolute;z-index:0;top:-48px;right:-38px;width:132px;height:132px;border-radius:50%;background:radial-gradient(circle,#ffd4764d,#ffd47600);pointer-events:none}.sketch-frame svg{position:relative;z-index:1;width:100%;aspect-ratio:4 / 3;display:block;border-radius:16px;background:#edf3ff}.sketch-frame figcaption{position:relative;z-index:1;margin:9px 5px 3px;color:#66738d;font-size:12px;line-height:1.5}.sketch-mini{position:relative;width:96px;height:72px;overflow:hidden;border:1px solid rgba(197,211,236,.86);border-radius:14px;background:#edf3ff;box-shadow:0 5px 12px #344c871c}.sketch-mini:after{content:"";position:absolute;top:7px;left:8px;width:15px;height:3px;border-radius:99px;background:#ffffffbd;pointer-events:none}.sketch-mini svg{width:100%;height:100%;margin:0;display:block}.sketch-frame img,.sketch-mini img{width:100%;height:100%;object-fit:cover}.sketch-frame.is-raster img{position:relative;z-index:1;display:block;width:100%;height:auto;aspect-ratio:4 / 3;border-radius:12px;object-fit:cover}.sketch-mini.is-raster{overflow:hidden}.sketch-mini.is-raster:after{display:none}.sketch-mini.is-raster img{display:block;border-radius:inherit}.sketch-mini,.diagram-mini{border-radius:14px}.panel{border:0;border-radius:18px;background:var(--sheet);box-shadow:var(--shadow)}.profile-hero{display:flex;align-items:center;gap:15px;padding:8px 4px 22px}.profile-hero h1{margin:2px 0;font:26px var(--display)}.profile-hero p{margin:0;color:var(--ink-soft);font-size:13px}.profile-kicker{color:var(--wash);font-size:10px;font-weight:700;letter-spacing:.14em}.profile-avatar{display:grid;flex:0 0 auto;width:48px;height:48px;place-items:center;overflow:hidden;border-radius:16px;background:#e8edff;color:var(--wash);font-size:19px;font-weight:700}.profile-avatar img{width:100%;height:100%;object-fit:cover}.profile-avatar-large{width:68px;height:68px;border-radius:22px;font-size:26px}.profile-form{padding:18px}.profile-section-head{display:flex;justify-content:space-between;align-items:center;gap:10px}.profile-section-head strong{display:block}.profile-section-head span{display:block;margin-top:3px;color:var(--ink-soft);font-size:12px}.profile-upload{flex:0 0 auto;padding:8px 11px;font-size:12px}.profile-preview-line{display:flex;align-items:center;gap:10px;margin:16px 0 22px;padding:12px;border-radius:14px;background:#f3f5fa;color:var(--ink-soft);font-size:12px}.text-btn{margin-left:auto;border:0;background:none;color:var(--stamp);font-size:12px}.profile-form textarea{resize:vertical}.field-counter{margin-top:4px;color:var(--ink-soft);font-size:11px;text-align:right}.saved-note{color:var(--ok-ink);font-size:13px}.profile-save{width:100%;margin-top:8px}.empty{border:1px dashed #c6d0e4;border-radius:16px;background:#ffffff8c;padding:18px;color:var(--ink-soft)}.hint{color:var(--ink-soft)}.btn,.actions button{border:0;border-radius:12px;background:#eff2f8;color:var(--ink);font-weight:600}.btn.primary,.actions .master{background:var(--wash);color:#fff;box-shadow:0 7px 14px #4356d62e}.btn.ghost{border:0;background:#eff2f8}.btn:active,.actions button:active{transform:translateY(1px) scale(.985)}.back{color:var(--ink);font-weight:700}.menu-btn{border:0;border-radius:10px;background:#edf1fa}.tabbar{padding:6px 6px var(--safe-bottom);border:1px solid rgba(217,225,238,.95);border-bottom:0;border-radius:20px 20px 0 0;background:#fffffff5;box-shadow:0 -10px 30px #1f305814}.tabbar a.tab-item{min-height:63px;border-radius:13px;font-size:10px;letter-spacing:.04em}.tabbar a.tab-item.active{color:var(--wash);background:#edf0ff;transform:none}.tabbar a.tab-item:before{display:none}.tab-badge,.conv-unread,.nav-badge{background:var(--stamp)}.drawer-mask{background:#17233f61}.learn-drawer{padding:24px 14px;border:0;border-radius:0 22px 22px 0;background:#fff;box-shadow:12px 0 36px #17233f2e}.drawer-title{color:var(--ink)}.learn-drawer a{border-radius:10px;color:var(--ink-soft);letter-spacing:.04em}.learn-drawer a.active{background:#edf0ff;box-shadow:none;color:var(--wash)}.inbox-page{padding-top:18px}.conv-block+.conv-block{margin-top:22px}.conv-section{margin:0 4px 8px;color:var(--ink);font-weight:700;letter-spacing:.03em}.conv-list{overflow:visible;border:0;background:transparent}.conv-row{margin-bottom:8px;border:1px solid rgba(217,225,238,.9);border-radius:16px;background:#fff;box-shadow:0 4px 12px #1f30580a}.conv-row:last-child{border-bottom:1px solid rgba(217,225,238,.9)}.conv-avatar{border-radius:13px;background:#5365d8}.conv-avatar.is-dm{background:#217c78}.conv-avatar.is-system{background:#7b86a1}.chat-page{background:#eef2f8}.chat-head{background:#ffffffeb}.chat-bubble{border-radius:16px 16px 16px 4px;box-shadow:0 3px 9px #1f30580f}.chat-bubble.is-mine{background:var(--wash);border-radius:16px 16px 4px}.chat-avatar{border-radius:12px;background:#5365d8}.chat-dock{background:#fffffff5}.chat-send{background:var(--wash)}.login-wrap{padding:24px;background:#202d68}.login-stage{display:grid;width:min(840px,100%);grid-template-columns:1fr minmax(330px,390px);overflow:hidden;border-radius:24px;background:#fff;box-shadow:0 24px 80px #070d2c47}.login-intro{position:relative;min-height:510px;padding:54px 48px;overflow:hidden;color:#fff;background:#3146a1}.login-jp{position:relative;z-index:1;font:36px/1.42 var(--display);letter-spacing:.07em}.login-intro p{position:relative;z-index:1;margin-top:20px;color:#ffffffb3;line-height:1.8;font-size:13px}.login-orbit{position:absolute;right:-45px;bottom:-54px;width:292px;height:292px;border:1px solid rgba(255,255,255,.25);border-radius:50%}.login-orbit span,.login-orbit b{position:absolute;display:grid;width:70px;height:70px;place-items:center;border-radius:50%;font:32px var(--display)}.login-orbit span{left:12px;top:18px;color:#3146a1;background:#ffcf68}.login-orbit b{right:14px;bottom:29px;color:#3146a1;background:#fff}.login-orbit i{position:absolute;left:103px;top:50px;font-style:normal;font-size:11px;letter-spacing:.15em}.login-card{width:auto;padding:44px 36px;border:0;box-shadow:none}.login-card .hint{margin:0 0 26px;line-height:1.65}.login-card input{border-radius:11px;background:#f3f5fa;border-color:transparent}.login-card .btn{margin-top:10px;border-radius:11px}.admin-shell{background:var(--paper)}.admin-nav{background:#202d68}.admin-brand{display:grid;gap:4px;margin:2px 0 28px;color:#fff;font:22px var(--display)}.admin-brand small{color:#9aa7ef;font:10px var(--body);letter-spacing:.14em}.admin-nav h1{color:#aeb8ed;font-size:11px;letter-spacing:.12em}.admin-nav a{border-radius:8px;color:#e8ebff}.admin-nav a.active{box-shadow:none;background:#4356d6}.admin-main{padding:24px}@media(min-width:981px){.app-shell{padding-bottom:0}.topbar{padding-left:max(24px,calc((100vw - 1220px)/2));padding-right:max(24px,calc((100vw - 1220px)/2))}.app-frame{display:grid;grid-template-columns:230px minmax(0,1fr);width:min(1220px,100%);min-height:calc(100dvh - 64px);margin:0 auto}.study-rail{display:flex;flex-direction:column;gap:14px;padding:36px 20px 30px 4px;border-right:1px solid var(--rule)}.rail-kicker{color:var(--wash);font-size:10px;font-weight:700;letter-spacing:.16em}.rail-title{margin-bottom:6px;font:22px/1.35 var(--display)}.study-rail nav{display:grid;gap:3px}.study-rail nav a{display:flex;justify-content:space-between;align-items:center;padding:9px 10px;border-radius:10px;color:var(--ink-soft);font-size:14px}.study-rail nav a i{color:transparent;font-size:20px;font-style:normal}.study-rail nav a:hover,.study-rail nav a.active{color:var(--wash);background:#e6eaff}.study-rail nav a.active i{color:var(--wash)}.rail-plan{display:grid;gap:3px;margin-top:auto;padding:13px;border-radius:14px;color:#fff;background:#273b87}.rail-plan span{color:#bdc8ff;font-size:11px}.rail-plan strong{font-size:13px}.app-content .page{margin:0;padding:32px 36px 42px}.tabbar,.menu-btn{display:none}.topbar .count-chip{display:inline-block}.drawer-root{display:none}.chat-page{height:calc(100dvh - 64px)}.chat-dock{bottom:0;padding-left:max(20px,calc((100% - 800px)/2 + 20px));padding-right:max(20px,calc((100% - 800px)/2 + 20px))}.chat-page.has-dock{padding-bottom:62px}}@media(max-width:620px){.login-wrap{padding:0;background:#fff;align-items:stretch}.login-stage{display:block;border-radius:0;box-shadow:none}.login-intro{min-height:255px;padding:38px 28px}.login-jp{font-size:29px}.login-card{padding:30px 24px 36px}.login-orbit{transform:scale(.72);transform-origin:bottom right}}@media(prefers-reduced-motion:reduce){.row-card,.btn,.actions button{transition:none}}:root{--keyboard-offset: 0px;color-scheme:light}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent;touch-action:manipulation}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(67,86,214,.42);outline-offset:2px}.chat-dock{bottom:calc(72px + var(--safe-bottom) + var(--keyboard-offset))}.chat-page.has-dock{padding-bottom:calc(62px + var(--keyboard-offset))}@media(max-width:620px){.topbar{gap:7px;padding:9px 12px}.topbar .count-chip{display:none}.brand-lockup{gap:6px}.brand-seal{width:31px;height:31px}.brand-name span:first-child{font-size:14px}.brand-name span:last-child{font-size:10px}.brand-sub{max-width:130px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.top-actions{gap:3px}.header-avatar{width:38px;height:38px;border-radius:12px}.top-actions .speak{min-width:40px;min-height:40px;padding:0 4px;font-size:12px}.page{padding:16px 12px 28px}.row-card{min-height:76px;padding:13px}.row-card:hover{transform:none}.row-card.has-sketch{grid-template-columns:minmax(0,1fr) 76px}.sketch-mini,.diagram-mini{width:76px;height:68px}.row-lemma{font-size:24px}.learn-tabs,.class-tabs,.filter-row{scrollbar-width:none;scroll-snap-type:x proximity}.learn-tabs::-webkit-scrollbar,.class-tabs::-webkit-scrollbar,.filter-row::-webkit-scrollbar{display:none}.learn-tabs .btn,.class-tabs .btn,.filter-row .btn,.filter-row select{min-height:42px;scroll-snap-align:start}.learn-tabs .btn,.class-tabs .btn{flex:0 0 auto;min-width:88px}.filter-row .btn{flex:0 0 auto;min-width:78px}.actions{gap:10px}.actions .btn,.actions button,.btn{min-height:44px}.field input,.field textarea,.field select,.search-row input{min-height:48px;font-size:16px}.search-row:before{margin-right:-37px}.learn-drawer{width:min(308px,88vw);padding-top:calc(22px + var(--safe-bottom));overflow-y:auto;overscroll-behavior:contain}.learn-drawer a{min-height:46px;display:flex;align-items:center}.chat-page{height:calc(100dvh - 64px - 76px - var(--safe-bottom))}.chat-scroller{padding:12px 10px 16px;overscroll-behavior:contain}.chat-bubble{font-size:16px}.chat-dock{padding:8px 10px}.chat-dock input{min-height:42px;font-size:16px}.chat-send{min-width:58px;min-height:42px}.chat-page.has-dock{padding-bottom:calc(66px + var(--keyboard-offset))}.profile-preview-line{align-items:flex-start}.profile-preview-line>span{padding-top:4px}.profile-preview-line .text-btn{min-height:36px}.profile-section-head{align-items:flex-start}.profile-upload{min-height:40px}.admin-shell{min-height:100dvh}.admin-nav{position:sticky;top:0;z-index:20;display:flex;flex-wrap:nowrap;gap:7px;align-items:center;overflow-x:auto;padding:10px 12px;box-shadow:0 4px 18px #0c13352e;scrollbar-width:none}.admin-nav::-webkit-scrollbar{display:none}.admin-nav h1{display:none}.admin-brand{flex:0 0 auto;margin:0 6px 0 0;font-size:15px}.admin-brand small{display:none}.admin-nav a{flex:0 0 auto;min-height:38px;padding:8px 10px;white-space:nowrap}.admin-nav .btn{flex:0 0 auto;min-height:38px;margin-top:0!important;white-space:nowrap}.admin-main{padding:16px 12px}}@media(prefers-color-scheme:dark){:root{color-scheme:dark;--paper: #101625;--sheet: #182135;--ink: #eef3ff;--ink-soft: #aab6cd;--rule: #2c3954;--wash: #96a6ff;--stamp: #ff977e;--stamp-soft: #44262a;--ok-ink: #73d9bd;--shadow: 0 12px 30px rgba(0,0,0,.28)}body:before{background-image:radial-gradient(rgba(150,166,255,.16) .75px,transparent .75px);opacity:.25}.topbar{background:#101625eb;border-bottom-color:var(--rule)}.brand-name,.back{color:var(--ink)}.count-chip{background:#1d2949;color:#b6c2ff}.header-avatar,.profile-avatar{background:#25335a;color:#bcc7ff}.plan-bar{background:#263986;box-shadow:0 12px 24px #00000042}.plan-ring b{background:#e9efff}.learn-tabs,.class-tabs{background:#202b42}.learn-tabs .btn.primary,.class-tabs .btn.primary{color:var(--ink);background:#2a3855;box-shadow:none}.search-row input,.filter-row select,.field input,.field textarea,.field select,.login-card input{background:#202b42;border-color:#2c3954;color:var(--ink)}.search-row input::placeholder,.chat-dock input::placeholder{color:#8794ad}.row-card,.conv-row{border-color:var(--rule);background:var(--sheet);box-shadow:0 6px 18px #0000002b}.row-card:hover{border-color:#5d70b2;box-shadow:0 10px 24px #00000042}.row-mean{color:#c6d0e2}.tag{background:#25314a;color:#bdc9df}.tag.stamp{color:#ffad9c}.sketch-mini,.diagram-mini{background:#273149}.panel,.example,.note{border-color:var(--rule);background:var(--sheet)}.empty{border-color:#3b4a66;background:#1821359e}.btn,.actions button,.btn.ghost{background:#25314a;color:var(--ink)}.btn.primary,.actions .master{background:#7183ef;color:#0d1428;box-shadow:none}.menu-btn{background:#25314a}.menu-btn span{background:var(--ink)}.tabbar{border-color:var(--rule);background:#101625f5;box-shadow:0 -8px 22px #0000004d}.tabbar a.tab-item{color:#aab7d0}.tabbar a.tab-item.active{color:#c5ceff;background:#263354}.learn-drawer{background:#182135;box-shadow:12px 0 34px #0006}.learn-drawer a{color:#b7c4dc}.learn-drawer a.active{background:#27365d;color:#d2d9ff}.drawer-mask{background:#0000009e}.conv-avatar{background:#6174df}.conv-avatar.is-dm{background:#378983}.conv-avatar.is-system{background:#62708e}.conv-row:last-child{border-bottom-color:var(--rule)}.chat-page{background:#121a2b}.chat-head,.chat-dock{border-color:var(--rule);background:#182135f5}.chat-bubble{background:#263149;color:var(--ink);box-shadow:none}.chat-bubble.is-mine{background:#6477e6;color:#101629}.chat-avatar{background:#6174df}.chat-day,.chat-sys{background:#263149;color:#b3bed2}.chat-dock input{background:#263149;color:var(--ink)}.profile-preview-line{background:#202b42}.login-wrap{background:#0d1322}.login-stage,.login-card{background:#182135}.login-orbit b{background:#e9efff}.admin-shell,.admin-main{background:var(--paper)}.admin-table-wrap{border-color:var(--rule);background:var(--sheet)}th,td{border-bottom-color:var(--rule)}.option{border-color:var(--rule);background:var(--sheet);color:var(--ink)}.option.right{background:#173c38;border-color:#55b99d}.option.wrong{background:#44262a;border-color:var(--stamp)}.speak-dock{background:#1d2941}}