:root{--paper: #F3F5F7;--card: #FFFFFF;--ink: #1C2530;--ink-soft: #5A6B7C;--line: #DDE3EA;--indigo: #3B4E8C;--indigo-deep: #2C3A69;--indigo-tint: #E8ECF6;--akane: #C9403B;--akane-tint: #F9E9E8;--moss: #4E937A;--moss-tint: #E7F2EE;--plum: #7A4E93;--plum-tint: #F1EAF6;--radius: 14px;--radius-sm: 10px;--shadow: 0 1px 3px rgba(28, 37, 48, .08), 0 4px 14px rgba(28, 37, 48, .06);--font-display: "Zen Maru Gothic", "Noto Sans JP", system-ui, sans-serif;--font-body: "Noto Sans JP", system-ui, -apple-system, sans-serif}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:var(--paper);color:var(--ink);font-family:var(--font-body);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}.app{max-width:680px;margin:0 auto;min-height:100dvh;display:flex;flex-direction:column;padding-bottom:env(safe-area-inset-bottom)}h1,h2,h3{font-family:var(--font-display);margin:0}button{font-family:var(--font-body);font-size:15px;border:none;border-radius:var(--radius-sm);cursor:pointer;padding:10px 16px;background:var(--card);color:var(--ink);transition:transform .08s ease,background .15s ease,box-shadow .15s ease}button:active{transform:scale(.97)}button:focus-visible{outline:3px solid var(--indigo);outline-offset:2px}button:disabled{opacity:.45;cursor:default}.btn-primary{background:var(--indigo);color:#fff;font-weight:600}.btn-primary:hover{background:var(--indigo-deep)}.btn-ghost{background:transparent;color:var(--indigo);font-weight:600}.btn-danger-ghost{background:transparent;color:var(--akane)}input[type=text],textarea,select{font-family:var(--font-body);font-size:16px;border:1.5px solid var(--line);border-radius:var(--radius-sm);padding:10px 12px;background:var(--card);color:var(--ink);width:100%}input:focus-visible,textarea:focus-visible,select:focus-visible{outline:none;border-color:var(--indigo);box-shadow:0 0 0 3px var(--indigo-tint)}.topbar{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:14px 16px 10px}.topbar .brand{font-family:var(--font-display);font-weight:700;font-size:20px;color:var(--indigo);letter-spacing:.5px}.topbar .brand small{display:block;font-size:11px;font-weight:500;color:var(--ink-soft);letter-spacing:2px}.icon-btn{background:transparent;font-size:20px;padding:8px 10px;line-height:1}.station-sign{margin:4px 16px 12px;background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);border-top:4px solid var(--indigo);border-bottom:4px solid var(--indigo);padding:10px 16px;display:flex;align-items:center;justify-content:space-between;gap:10px}.station-sign .name{font-family:var(--font-display);font-weight:700;font-size:17px}.station-sign .sub{font-size:11px;letter-spacing:1.5px;text-transform:uppercase;color:var(--ink-soft)}.scene-brief{margin:-4px 16px 10px;padding:8px 14px 10px;background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);font-size:13px;color:var(--ink-soft);line-height:1.4}.scene-brief-desc{margin:0}.scene-brief-goal{margin:6px 0 0;color:var(--ink)}.scene-brief-goal strong{font-weight:700}.chip{display:inline-block;font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;white-space:nowrap}.chip.casual{background:var(--moss-tint);color:var(--moss)}.chip.polite{background:var(--indigo-tint);color:var(--indigo)}.chip.formal{background:var(--plum-tint);color:var(--plum)}.chip.level{background:var(--paper);color:var(--ink-soft);border:1px solid var(--line)}.chip-toggle{border:1.5px solid var(--line);background:var(--card);border-radius:999px;padding:8px 16px;font-size:14px}.chip-toggle.selected{background:var(--indigo);border-color:var(--indigo);color:#fff;font-weight:600}.chip-select{border:1.5px solid var(--line);background-color:var(--card);border-radius:999px;padding:8px 22px 8px 12px;font-size:14px;line-height:1.2;font-family:inherit;color:var(--ink);-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%23666' d='M1 1l4 4 4-4'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;background-size:10px 6px;cursor:pointer;width:auto;min-width:0}.chip-select.selected{background-color:var(--indigo);border-color:var(--indigo);color:#fff;font-weight:600;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%23fff' d='M1 1l4 4 4-4'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;background-size:10px 6px}.chip-select:focus-visible{outline:2px solid var(--indigo);outline-offset:2px}.screen{padding:0 16px 24px;display:flex;flex-direction:column;gap:12px}.screen-title{font-size:22px;padding:4px 0}.screen-sub{color:var(--ink-soft);font-size:14px;margin:-6px 0 4px}.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}.scenario-card{display:flex;flex-direction:column;gap:6px;text-align:left;width:100%;padding:14px 16px}.scenario-card .row{display:flex;align-items:flex-start;justify-content:space-between;gap:8px}.scenario-card .title{font-family:var(--font-display);font-weight:700;font-size:16px}.scenario-card .desc{font-size:13px;color:var(--ink-soft)}.scenario-card .tags{display:flex;gap:6px;flex-wrap:wrap}.scenario-chips{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end;flex-shrink:0}.chip.level-starter{background:#f4eee4;color:#8a6a3b}.chip.level-beginner{background:var(--moss-tint);color:var(--moss)}.chip.level-intermediate{background:var(--indigo-tint);color:var(--indigo)}.chip.level-advanced{background:var(--plum-tint);color:var(--plum)}.scene-level-group{display:flex;flex-direction:column;gap:10px;margin-top:18px;padding-top:4px}.scene-level-group.is-current{padding:12px;margin-left:-12px;margin-right:-12px;border-radius:var(--radius-sm);background:color-mix(in srgb,var(--indigo-tint) 55%,transparent)}.scene-level-heading{display:flex;align-items:baseline;flex-wrap:wrap;gap:8px;margin-bottom:2px}.scene-level-title{margin:0;font-family:var(--font-display);font-size:15px;font-weight:700}.scene-level-ref{font-size:12px;color:var(--ink-soft)}.scene-level-badge{font-size:11px}.creator-select-row{display:flex;gap:8px;margin:8px 0}.creator-select-row select{flex:1}.chip-row{display:flex;gap:8px;flex-wrap:wrap}.chip-toggle.interest-custom{display:inline-flex;align-items:center;gap:6px}.chip-toggle .interest-remove{display:inline-flex;align-items:center;justify-content:center;width:1.1em;height:1.1em;margin-right:-2px;border-radius:999px;font-size:14px;line-height:1;opacity:.7}.chip-toggle .interest-remove:hover{opacity:1}.interest-add-row{display:flex;flex-direction:column;gap:8px;padding:4px 0 12px}.interest-add-controls{display:flex;gap:8px;align-items:center}.interest-add-input{flex:1;min-width:0;border:1.5px solid var(--line);border-radius:10px;padding:8px 12px;font:inherit;background:var(--card)}.chat-screen{display:flex;flex-direction:column;flex:1;min-height:0}.chat-messages{flex:1;overflow-y:auto;padding:4px 16px 12px;display:flex;flex-direction:column;gap:10px}.msg{max-width:82%;padding:10px 14px;border-radius:16px;white-space:pre-wrap;word-break:break-word;position:relative;animation:msg-in .18s ease;font-size:17px}@keyframes msg-in{0%{opacity:0;transform:translateY(4px)}}.msg.user{align-self:flex-end;background:var(--indigo);color:#fff;border-bottom-right-radius:4px}.msg.assistant{align-self:flex-start;background:var(--card);box-shadow:var(--shadow);border-bottom-left-radius:4px}.msg.system-note{align-self:center;background:transparent;color:var(--ink-soft);font-size:13px;text-align:center}.msg .speak-btn{position:absolute;right:-34px;bottom:2px;background:transparent;padding:4px;font-size:15px;opacity:.6}.msg .speak-btn:hover{opacity:1}.msg.user.assist{display:flex;flex-direction:column;gap:4px}.msg.user.assist .assist-source{opacity:.85;font-size:.92em}.msg.user.assist .assist-sent{font-weight:600;margin-top:2px}.msg.user.assist .assist-meta{font-size:11px;opacity:.7;letter-spacing:.02em}.msg.user.assist .assist-meta+.assist-sent{padding-top:6px;border-top:1px solid rgba(255,255,255,.25);margin-top:6px}.msg-body{white-space:pre-wrap;word-break:break-word}.msg-body.has-reading,.assist-sent.has-reading,.hint-example.has-reading,.result-block .has-reading{white-space:normal;font-size:1.08em;line-height:2.35}.hint-example.has-reading{font-size:16px}.result-block .big.has-reading{font-size:1.05em}.reading-line,.reading-romaji{margin-top:4px;font-size:.95em;line-height:1.35;color:var(--ink-soft);letter-spacing:.02em;white-space:pre-wrap;word-break:break-word}.msg.user .reading-line,.msg.user .reading-romaji{opacity:.9;color:inherit}.reading-line-error,.reading-romaji-error{font-style:italic;opacity:.75}.jp-ruby{ruby-align:center;ruby-position:under;margin:0 1px}.jp-ruby rp{display:none}.jp-ruby rt{font-size:.72em;font-weight:400;opacity:.88;letter-spacing:.01em;line-height:1.15;-webkit-user-select:none;user-select:none;font-variant-east-asian:normal}.msg.user .jp-ruby rt{opacity:.92}.msg.assistant .jp-ruby rt{color:var(--ink-soft);opacity:1}.typing{display:inline-flex;gap:4px;padding:4px 0}.typing span{width:7px;height:7px;border-radius:50%;background:var(--ink-soft);animation:blink 1.2s infinite}.typing span:nth-child(2){animation-delay:.2s}.typing span:nth-child(3){animation-delay:.4s}@keyframes blink{0%,80%,to{opacity:.25}40%{opacity:1}}.typing-status{font-size:12px;color:var(--ink-soft);margin-top:2px}.review-ready{display:block;width:100%;text-align:left;cursor:pointer;font:inherit;color:inherit;border:1px solid var(--indigo, #4f46e5)}.review-ready .title{font-weight:600}.review-ready .desc{margin-top:4px;font-size:13px;color:var(--ink-soft)}.hint-card{margin:0 16px 8px;background:var(--indigo-tint);border-radius:var(--radius);padding:12px 14px;font-size:14px;display:flex;flex-direction:column;gap:6px}.hint-card .hint-example{font-family:var(--font-display);font-weight:700;font-size:15px;cursor:pointer}.hint-card .hint-actions{display:flex;gap:8px;justify-content:flex-end}.hint-card button{padding:6px 12px;font-size:13px}.composer{padding:10px 16px 14px;background:var(--paper);border-top:1px solid var(--line);display:flex;flex-direction:column;gap:8px}.composer .input-row{display:flex;gap:8px;align-items:flex-end}.composer textarea{flex:1;resize:none;max-height:120px;line-height:1.4}.composer .send-btn{background:var(--indigo);color:#fff;font-weight:700;padding:10px 18px}.composer .tool-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.mic-btn{font-size:18px;padding:8px 14px;border:1.5px solid var(--line)}.mic-btn.recording{background:var(--akane);border-color:var(--akane);color:#fff;animation:pulse 1.2s infinite}@keyframes pulse{50%{box-shadow:0 0 0 6px var(--akane-tint)}}.mode-switch{display:inline-flex;border:1.5px solid var(--line);border-radius:999px;overflow:hidden}.mode-switch button{border-radius:0;padding:7px 12px;font-size:13px;background:var(--card)}.mode-switch button.on{background:var(--indigo);color:#fff;font-weight:600}.spacer{flex:1}.overlay-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#1c253066;display:flex;align-items:flex-end;justify-content:center;z-index:50}.sheet{background:var(--paper);border-radius:20px 20px 0 0;width:100%;max-width:680px;max-height:86dvh;overflow-y:auto;padding:18px 16px calc(18px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:12px;animation:sheet-up .22s ease}@keyframes sheet-up{0%{transform:translateY(30px);opacity:0}}.sheet-head{display:flex;align-items:center;justify-content:space-between}.result-block{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:12px 14px}.result-block .label{font-size:11px;letter-spacing:1.5px;text-transform:uppercase;color:var(--ink-soft);margin-bottom:4px}.result-block .big{font-family:var(--font-display);font-weight:700;font-size:17px}.msg-line-translation{display:block;margin-top:12px;padding-top:8px;border-top:1px solid var(--line);font-size:12.5px;line-height:1.4;font-weight:400;font-style:normal;letter-spacing:.01em;color:var(--ink-soft);opacity:.92}.msg-body.has-reading+.msg-line-translation,.assist-sent.has-reading+.msg-line-translation,.hint-example.has-reading+.msg-line-translation{margin-top:16px}.msg-line-translation.is-error{opacity:.7}.msg.user .msg-line-translation{border-top-color:#ffffff47;color:#fffc;opacity:1}.result-gloss{margin-top:8px;padding-top:6px;border-top:1px solid var(--line);font-size:12.5px;line-height:1.4;font-weight:400;font-style:normal;color:var(--ink-soft);opacity:.92}.result-gloss.is-error{opacity:.7}.translate-helper{display:flex;flex-direction:column;gap:10px}.translate-field-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.translate-field-label{flex:0 0 auto;font-size:13px;font-weight:600;color:var(--ink-soft)}.translate-mode-select{flex:1 1 auto;min-width:0;max-width:none;font-weight:600}.translate-field-row .chip-select{flex:1 1 auto;min-width:0;max-width:none}.translate-input-row{display:flex;align-items:flex-start;gap:8px}.translate-input-row textarea{flex:1 1 auto;min-width:0;margin:0}.translate-mic-btn{flex:0 0 auto;margin-top:2px}.translate-voice-err{margin:0}.translate-context-block{display:flex;flex-direction:column;gap:8px;margin-bottom:2px}.translate-context-row{display:flex;align-items:center;gap:12px}.translate-context-field{flex:1 1 auto;min-width:0;display:flex;align-items:center;gap:8px}.translate-context-input{flex:1 1 auto;min-width:0;margin:0;padding:8px 12px;font-size:13px}.translate-context-field .translate-mic-btn,.context-guide{margin-top:0}.translate-results{display:flex;flex-direction:column;gap:10px;margin-top:4px}.translate-formality-block{display:flex;flex-direction:column;gap:8px;margin-bottom:2px}.formality-guide{background:var(--indigo-tint);border-radius:calc(var(--radius) - 2px);padding:10px 12px}.formality-guide-title{font-family:var(--font-display);font-weight:700;font-size:14px;margin-bottom:4px}.formality-guide-body{margin:0;font-size:13px;line-height:1.45;color:var(--ink-soft)}.home-section{display:flex;flex-direction:column;gap:10px}.home-section+.home-section{margin-top:8px;padding-top:18px;border-top:1px solid var(--line)}.section-heading{font-family:var(--font-display);font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-soft);margin:0}.home-scenes .section-heading{font-size:22px;letter-spacing:0;text-transform:none;color:var(--ink)}.section-sub{margin:-2px 0 2px}.tool-launch{display:flex;align-items:center;gap:12px;width:100%;text-align:left;padding:14px 16px;border:1.5px solid var(--indigo);border-radius:var(--radius);background:linear-gradient(135deg,var(--indigo-tint) 0%,var(--card) 55%);box-shadow:var(--shadow);cursor:pointer;color:inherit;font:inherit}.tool-launch:hover{background:linear-gradient(135deg,var(--indigo-tint) 0%,#fff 45%);box-shadow:0 4px 18px #28285a1f}.tool-launch:focus-visible{outline:3px solid var(--indigo);outline-offset:2px}.tool-launch.home-random{border-color:var(--moss);background:linear-gradient(135deg,var(--moss-tint) 0%,var(--card) 55%)}.tool-launch.home-random:hover{background:linear-gradient(135deg,var(--moss-tint) 0%,#fff 45%)}.tool-launch.home-random:focus-visible{outline-color:var(--moss)}.tool-launch.home-random .tool-launch-mark{background:var(--moss)}.tool-launch.home-random .tool-launch-go{color:var(--moss)}.tool-launch-mark{flex:0 0 auto;display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--indigo);color:#fff;font-family:var(--font-display);font-weight:700;font-size:15px;letter-spacing:.02em}.tool-launch-copy{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;gap:2px}.tool-launch-title{font-family:var(--font-display);font-weight:700;font-size:16px}.tool-launch-desc{font-size:13px;color:var(--ink-soft);line-height:1.35}.tool-launch-go{flex:0 0 auto;font-size:13px;font-weight:600;color:var(--indigo)}.translate-tool-card{display:flex;flex-direction:column;gap:0}.grade-badge{font-family:var(--font-display);font-size:44px;font-weight:700;color:var(--indigo);text-align:center}.mistake-item{border-left:3px solid var(--akane);padding:8px 12px;margin:8px 0;background:var(--card);border-radius:0 var(--radius-sm) var(--radius-sm) 0}.mistake-item .wrong{color:var(--akane);text-decoration:line-through}.mistake-item .right{color:var(--moss);font-weight:600}.mistake-item .note{font-size:13px;color:var(--ink-soft)}.suggest-item{border-left:3px solid var(--indigo);padding:8px 12px;margin:10px 0;background:var(--card);border-radius:0 var(--radius-sm) var(--radius-sm) 0}.suggest-row{display:flex;align-items:baseline;gap:10px;padding:3px 0}.suggest-row+.suggest-row{border-top:1px dashed var(--line)}.suggest-label{flex:0 0 auto;min-width:86px;font-size:11px;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-soft)}.suggest-item .said{color:var(--ink)}.suggest-item .alt{color:var(--indigo);font-weight:600}.suggest-item .note{font-size:13px;color:var(--ink-soft);margin-top:6px}.list-plain{margin:6px 0 0;padding-left:20px}.list-plain li{margin:4px 0}.onboard-step{display:flex;flex-direction:column;gap:14px;padding-top:8vh}.onboard-step .kicker{color:var(--indigo);font-size:12px;letter-spacing:2px;text-transform:uppercase;font-weight:700}.big-choice{display:flex;flex-direction:column;gap:4px;text-align:left;padding:16px;border:2px solid var(--line)}.big-choice.selected{border-color:var(--indigo);background:var(--indigo-tint)}.big-choice .t{font-family:var(--font-display);font-weight:700;font-size:16px}.big-choice .d{font-size:13px;color:var(--ink-soft)}.setting-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}.setting-row:last-child{border-bottom:none}.setting-row .lbl{font-weight:500}.setting-row .hint{font-size:12.5px;color:var(--ink-soft)}.setting-row .profile-select{width:150px}.switch{position:relative;width:46px;height:26px;flex-shrink:0}.switch input{opacity:0;width:0;height:0}.switch .track{position:absolute;top:0;right:0;bottom:0;left:0;background:var(--line);border-radius:999px;transition:background .15s;cursor:pointer}.switch .track:after{content:"";position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:#fff;transition:transform .15s}.switch input:checked+.track{background:var(--indigo)}.switch input:checked+.track:after{transform:translate(20px)}.switch input:focus-visible+.track{outline:3px solid var(--indigo-tint)}.error-banner{background:var(--akane-tint);color:var(--akane);border-radius:var(--radius-sm);padding:10px 14px;font-size:14px}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}.scenario-card{cursor:pointer}.scenario-card:focus-visible{outline:3px solid var(--indigo);outline-offset:2px}.station-sign .ai-disclosure{opacity:.75;font-size:11px;margin-top:2px}