:root{font-family:system-ui,-apple-system,"Noto Sans JP",sans-serif;color:#213747;background:#f7f9fa}*{box-sizing:border-box}body{margin:0}header{max-width:1080px;margin:auto;padding:22px 28px;display:flex;justify-content:space-between;align-items:center}a{color:inherit}.brand{font-size:25px;font-weight:750;text-decoration:none}.brand span{display:block;color:#647884;font-size:10px;font-weight:500;letter-spacing:1px}.brand:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #67b6d6;outline-offset:3px}nav{display:flex;align-items:center;gap:18px;font-size:13px}nav a{text-decoration:none;color:#436777}button{font:inherit;min-height:42px;border:1px solid #b9cbd2;border-radius:8px;padding:9px 16px;background:#fff;color:#294958;cursor:pointer}button.primary{background:#23566d;color:#fff;border-color:#23566d}.link-button{border:0;padding:5px;background:transparent;color:#356c80}.eyebrow{font-size:11px;letter-spacing:2px;color:#48788b;font-weight:700}main{max-width:760px;margin:34px auto 70px;padding:0 20px}h1{font-size:28px;letter-spacing:-.6px;margin:12px 0}h2{font-size:19px;margin:0}.lead{color:#637682;line-height:1.8;margin-bottom:25px}.section-head{display:flex;align-items:center;justify-content:space-between;margin:32px 0 14px}.search-row{display:flex;gap:8px;margin-top:9px}.search-row input{flex:1}input,textarea{font:inherit;width:100%;border:1px solid #aabdc6;border-radius:8px;padding:12px;background:#fff;color:#213747}textarea{resize:vertical;line-height:1.7}.history{display:grid;gap:10px}.history-item{display:block;width:100%;text-align:left;background:#fff;border:1px solid #e1e9ec;padding:16px;border-radius:12px}.history-item:hover{border-color:#8ebdcc}.history-title{font-weight:650;margin-bottom:7px}.history-meta,.muted,.status{color:#637682;font-size:13px;line-height:1.7}.snippet{font-size:13px;color:#4a626e;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.messages{display:grid;gap:12px;margin:22px 0 24px}.message{padding:14px 16px;border-radius:13px;white-space:pre-wrap;line-height:1.75}.message.user{background:#eaf5fa;margin-left:12%}.message.assistant{background:#fff;border:1px solid #e1e9ec;margin-right:12%}.message-role{font-size:11px;color:#617985;margin-bottom:5px}.compose-row{display:flex;align-items:center;gap:12px;margin-top:9px}.compose-row .status{flex:1}.badge{background:#eaf5fa;color:#24617a;border-radius:7px;padding:6px 10px;font-size:12px}label{display:block;font-size:14px;margin-top:20px}.status{min-height:1.5em}#global-status{margin-top:18px}@media(max-width:480px){header{padding:18px 20px}main{margin-top:20px}h1{font-size:23px}.message.user{margin-left:4%}.message.assistant{margin-right:4%}.compose-row{align-items:stretch;flex-direction:column}.compose-row button{width:100%}}

/* Familiar navigation: persistent desktop sidebar, modal mobile drawer. */
[hidden]{display:none!important}
body{display:grid;grid-template-columns:268px minmax(0,1fr);height:100dvh;overflow:hidden;background:#fff}
.sidebar{background:#f7f8fa;border-right:1px solid #e5e7eb;padding:20px 14px max(16px,env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:14px;min-height:0;overflow-y:auto}
.sidebar-head{display:flex;align-items:center;justify-content:space-between;padding:0 8px 8px}.sidebar .brand{font-size:23px}
#sidebar-close,#sidebar-toggle{display:none}.sidebar #new-consultation{width:100%;text-align:left;background:#fff;color:#213747;border-color:#d7dde2}
.sidebar label{margin-top:0;font-size:12px;color:#637682}.sidebar .search-row{gap:5px}.sidebar .search-row input{min-width:0;padding:10px;font-size:14px}.sidebar .search-row button{padding:7px 10px;font-size:12px}
.sidebar .section-head{margin:0}.sidebar h2{font-size:13px;color:#637682}.sidebar .history{gap:3px}.sidebar .history-item{background:transparent;border-color:transparent;padding:10px;border-radius:8px}.sidebar .history-item:hover,.sidebar .history-item[aria-current="page"]{background:#e9edf1}.sidebar .history-title{font-size:13px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar .history-meta{font-size:10px}.sidebar .snippet{font-size:11px}
#search:focus,#search:focus-visible{outline:none;box-shadow:none}
body.chat-loading .sidebar,body.chat-loading .workspace,body.chat-loading .sidebar-shade{visibility:hidden!important}
.sidebar-account{display:grid;gap:8px;margin-top:auto;padding-top:18px;border-top:1px solid #e0e5e9}.sidebar-account a{text-decoration:none;padding:10px;border-radius:8px;font-size:13px}.sidebar-account #purchase-info{margin:0;padding:0 10px;font-size:11px;line-height:1.6}.sidebar-account button{background:transparent;font-size:12px;border-color:#d9dfe4}
.workspace{min-width:0;overflow-y:auto;overscroll-behavior-y:contain}.workspace header{position:sticky;top:0;z-index:2;background:#fffffff2;max-width:none;padding:16px 24px;justify-content:flex-start;gap:12px;border-bottom:1px solid #f0f2f4}.workspace-title{display:inline-flex;align-items:center;gap:9px;font-size:17px;font-weight:650;text-decoration:none}.charlie-mark{display:block;width:34px;height:34px;flex:none}.sidebar .brand{display:flex;align-items:center;gap:10px}.sidebar .brand-copy{display:block;font-size:21px;line-height:1.15}.sidebar .brand-copy>span{display:block;margin-top:4px}
main{margin:24px auto 0;padding:0 28px max(24px,env(safe-area-inset-bottom));max-width:840px;min-height:calc(100dvh - 84px)}
#home{padding-top:min(20vh,150px);text-align:center}#home h1{font-size:27px;font-weight:600}#home .lead{font-size:15px}#home-start{margin-top:16px}
#consultation .section-head{margin-top:12px}.messages{padding-bottom:24px}.message.user{margin-left:15%;background:#eaf5fa}.message.assistant{border:0;margin-right:3%;padding-left:0;padding-right:0}.message-role{font-size:12px;font-weight:600}
#message-form{position:sticky;bottom:0;background:#fff;border:1px solid #d4dce1;border-radius:20px;padding:10px 12px;margin-top:22px;box-shadow:0 4px 18px #21374708}
#message{border:0;border-radius:0;padding:11px 6px;resize:none;min-height:48px;height:48px;max-height:40dvh;overflow-y:auto;font-size:16px;line-height:1.6;background:transparent}#message:focus-visible{outline:0}#message-form:focus-within{border-color:#7ba8bc;box-shadow:0 0 0 2px #d7eaf1}
#message-form .compose-row{margin-top:2px;flex-direction:row;align-items:flex-end}.send-button{width:40px;min-width:40px;min-height:40px;height:40px;border-radius:50%;padding:0;font-size:24px}button:disabled{opacity:.5;cursor:default}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.sidebar-shade{position:fixed;inset:0;border:0;border-radius:0;background:#0005;z-index:9}
@media(max-width:800px){body{display:block}.workspace{height:100dvh}.workspace header{padding:12px 16px}#sidebar-toggle{display:block;padding:4px 10px;font-size:21px}.sidebar{position:fixed;inset:0 auto 0 0;width:min(84vw,310px);z-index:10;visibility:hidden;transform:translateX(-100%);transition:transform .16s ease}body.sidebar-open .sidebar{visibility:visible;transform:translateX(0)}#sidebar-close{display:block;font-size:24px;border:0;background:transparent;padding:2px 9px}main{padding:0 18px max(18px,env(safe-area-inset-bottom));margin-top:18px;min-height:calc(100dvh - 78px)}#home{padding-top:14vh}#home h1{font-size:23px}.message.user{margin-left:8%}.message.assistant{margin-right:0}#message-form{bottom:env(safe-area-inset-bottom)}.send-button{width:40px!important}.sidebar .search-row{flex-direction:row}}
@media(prefers-reduced-motion:reduce){.sidebar{transition:none}}
#attachment-panel { margin: 12px 0; padding: 12px; border: 1px solid #ddd; border-radius: 10px; }
#attachment-files { display: block; width: 100%; max-width: 100%; margin-top: 8px; }
#attachment-rows { list-style: none; padding: 0; }
#attachment-rows li { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 8px 0; overflow-wrap: anywhere; }
#attachment-rows label { display: flex; align-items: center; gap: 8px; }
#attachment-rows input[type="checkbox"] { width: auto; }

/* Keep the attachment controls compact above the conversation composer. */
#attachment-panel{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;padding:10px 12px;margin:10px 0}
#attachment-panel>label{grid-column:1/-1;margin:0;font-size:13px}
#attachment-files{margin:0;padding:6px;min-width:0;font-size:13px}
#attachment-refresh{padding:6px 10px;min-height:36px;font-size:12px}
#attachment-rows{grid-column:1/-1;margin:0}
#attachment-rows:empty{display:none}
#attachment-rows label{margin:0}
#attachment-status{grid-column:1/-1;margin:0;font-size:12px;min-height:0}
#message{padding-right:56px}
#message-form .compose-row{margin:0;min-height:0}
#message-form .compose-row .status{padding-right:52px}
#message-form .compose-row .status:empty{display:none}
#message-form .send-button{position:absolute;right:12px;bottom:12px}
@media(max-width:480px){#attachment-panel{grid-template-columns:minmax(0,1fr)}#attachment-refresh{justify-self:start}}
#attachment-add{position:absolute;left:12px;bottom:12px;width:36px;height:40px;min-height:40px;padding:0;border:0;background:transparent;font-size:25px;line-height:1;color:#637682}
#attachment-panel.attachment-with-add>label{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
#attachment-panel.attachment-with-add>#attachment-files{display:block;grid-column:1/-1}
#attachment-panel.attachment-with-add>#attachment-refresh{grid-column:1/-1;justify-self:start}
#message-form>#attachment-panel.attachment-with-add{position:absolute;z-index:5;left:0;bottom:calc(100% + 12px);width:min(360px,100%);margin:0;padding:14px;background:#fff;border:1px solid #d4dce1;border-radius:14px;box-shadow:0 8px 28px #21374724;grid-template-columns:minmax(0,1fr)}
#message-form>#attachment-panel.attachment-with-add::after{content:"";position:absolute;bottom:-7px;left:22px;width:12px;height:12px;background:#fff;border-right:1px solid #d4dce1;border-bottom:1px solid #d4dce1;transform:rotate(45deg)}
#attachment-panel.attachment-with-add>#attachment-rows{max-height:min(25dvh,180px);overflow-y:auto}
#attachment-panel .attachment-popup-close{position:absolute;right:6px;top:6px;width:30px;min-height:30px;padding:0;border:0;background:transparent;font-size:22px}

#consultation{display:flex;flex-direction:column;min-height:calc(100dvh - 110px)}
#consultation>#message-form{margin-top:auto;flex-shrink:0}
#consultation.initial-consultation>#message-form{margin-top:auto;margin-bottom:auto;position:relative}
#consultation.initial-consultation>#messages{display:none}
#message-form>#attachment-panel{max-height:calc(100dvh - 110px);overflow-y:auto}
#attachment-panel.attachment-with-add>#attachment-files,#attachment-panel.attachment-with-add>.attachment-popup-close{display:none}
#attachment-panel.attachment-with-add:has(#attachment-rows:empty)>#attachment-status{display:none}
#message-form>#attachment-panel.attachment-with-add:has(#attachment-rows:empty){width:min(200px,100%);padding:6px}
#attachment-panel .attachment-file-action{grid-column:1/-1;width:100%;text-align:left;border:0;padding:9px 12px;background:transparent}
#attachment-panel .attachment-file-action:hover{background:#f0f3f5}
#message-form>#attachment-panel.attachment-with-add:has(#attachment-rows:empty){padding:2px 4px;gap:0;overflow:visible}
#attachment-panel .attachment-file-action{min-height:0;line-height:1.35;padding:4px 12px;font-size:14px}
#message-form>#attachment-panel.attachment-with-add{width:min(200px,100%);padding:2px 4px;gap:0;overflow:visible}
.attachment-drafts:has(#attachment-rows:empty){display:none}
.attachment-drafts{font-size:12px;margin-bottom:6px}
.attachment-drafts #attachment-rows{margin:0;max-height:120px;overflow-y:auto}
.attachment-drafts #attachment-rows li{margin:4px 0;gap:6px}
.attachment-drafts button{min-height:28px;padding:3px 8px;font-size:12px}
.attachment-drafts #attachment-status{font-size:12px;margin:0}
.attachment-spinner{display:inline-block;flex:none;width:12px;height:12px;border:2px solid #d2dee4;border-top-color:#24576b;border-radius:50%;animation:attachment-spin .8s linear infinite;margin-right:6px}
.attachment-elapsed{color:#647b89;margin-left:6px}
#send.attachment-loading{opacity:.45}
@keyframes attachment-spin{to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){.attachment-spinner{animation:none}}
#compose-status.is-processing::before{content:"";display:inline-block;width:10px;height:10px;border:2px solid #d2dee4;border-top-color:#24576b;border-radius:50%;animation:attachment-spin .8s linear infinite;margin-right:6px;vertical-align:-2px}
@media(prefers-reduced-motion:reduce){#compose-status.is-processing::before{animation:none}}
.attachment-advice{font-size:12px;line-height:1.6;color:#647b89;margin:6px 0}.attachment-advice[hidden]{display:none}
/* Input controls share the text row; processing status has its own row. */
.composer-input{position:relative;display:flex;align-items:center;gap:0;min-width:0}
#message-form .composer-input #message{flex:1;min-width:0;width:0;padding:11px 0}
#message-form .composer-input #attachment-add{position:static;flex:none;align-self:center}
#message-form .composer-input .send-button{position:static;flex:none;align-self:center}
#message-form .compose-row .status{padding:2px 0 0;margin:0;min-height:0}
#message-form .compose-row:has(.status:empty){display:none}
#message-form .composer-input>#attachment-panel.attachment-with-add{position:absolute;z-index:5;left:0;bottom:calc(100% + 12px);margin:0;background:#fff;border:1px solid #d4dce1;border-radius:14px;box-shadow:0 8px 28px #21374724}
#message-form .composer-input>#attachment-panel.attachment-with-add{width:min(200px,100%);padding:2px 4px;gap:0;grid-template-columns:minmax(0,1fr);overflow:visible}
#policy-consent-text p{white-space:pre-line}
#send.is-busy{display:grid;place-items:center;font-size:0;opacity:1}
#send.is-busy::before{content:"";width:17px;height:17px;border:2px solid #ffffff65;border-top-color:#fff;border-radius:50%;animation:attachment-spin .8s linear infinite}
@media(prefers-reduced-motion:reduce){#send.is-busy::before{animation:none}}

.history-row{display:flex;align-items:center;gap:3px;min-width:0}.history-row .history-item{flex:1;min-width:0}.history-delete{flex:0 0 auto;padding:5px;font-size:11px;border:0;background:transparent;color:#637682;min-width:38px}#history-deletion-dialog{max-width:460px;width:calc(100% - 48px);box-sizing:border-box;border:1px solid #b9cbd2;border-radius:12px;padding:24px;color:#213747}#history-deletion-dialog::backdrop{background:rgba(20,35,45,.35)}.deletion-actions{display:flex;justify-content:flex-end;gap:12px}#history-deletion-dialog p{line-height:1.7}.deletion-actions [data-delete-confirm]{color:#9b2929}

.history-menu{position:relative;flex:0 0 34px;align-self:center}.history-menu summary{list-style:none;min-height:42px;display:flex;align-items:center;justify-content:center;border-radius:6px;cursor:pointer;font-size:22px;color:#637682;opacity:0}.history-menu summary::-webkit-details-marker{display:none}.history-row:hover .history-menu summary,.history-row:focus-within .history-menu summary,.history-menu[open] summary{opacity:1}.history-menu summary:focus-visible{outline:3px solid #67b6d6;outline-offset:2px}.history-menu summary:hover{background:#e9edf1}.history-menu[open] .history-delete{position:absolute;right:0;top:100%;z-index:20;min-width:90px;min-height:42px;background:#fff;border:1px solid #d5e0e5;box-shadow:0 4px 14px #21374720;border-radius:7px;font-size:13px;color:#9b2929}@media(max-width:800px),(pointer:coarse){.history-menu summary{opacity:1}}
.branch-links{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}.branch-links button{min-height:36px;padding:7px 12px;font-size:13px}

.charlie-mark{object-fit:contain}