/* Tsukaima project site. Order: tokens, @font-face, type roles, base styles, then page sections below the marker. */

/* ---- tokens (light values from design/tokens/*.css) ---- */
:root{
  /* base */
  --cream-0:#FFFDF7; --cream-1:#F7F4ED; --cream-2:#EFEAE0; --cream-3:#E6E0D4;
  --ink-1:#272220; --ink-2:#5D564E; --ink-3:#746B61;
  --lavender-600:#6A5EBF; --lavender-500:#7C6FCF; --lavender-300:#C9C2F0; --lavender-100:#EAE6F8;
  --green-600:#5B8A68; --red-600:#B3564E; --amber-600:#A8823E;
  /* semantic */
  --surface-page:var(--cream-1); --surface-raised:var(--cream-0); --surface-sunken:var(--cream-2);
  --border-hairline:var(--cream-3);
  --text-body:var(--ink-1); --text-secondary:var(--ink-2); --text-tertiary:var(--ink-3);
  --accent:var(--lavender-500); --accent-pressed:var(--lavender-600);
  --accent-on:#FFFFFF; --accent-selected:var(--lavender-300); --accent-wash:var(--lavender-100);
  --bubble-user:var(--lavender-100); --bubble-user-ink:var(--ink-1);
  --status-ok:var(--green-600); --status-danger:var(--red-600); --status-warn:var(--amber-600);
  --code-bg:#272233; --code-ink:#D8D3E8;
  --wash-hover:rgba(39,34,32,.04); --wash-press:rgba(39,34,32,.08);
  /* elevation */
  --shadow-float:0 2px 12px rgba(60,50,40,.10);
  --ring-focus:0 0 0 2px var(--accent);
  --ease-quiet:cubic-bezier(.25,.1,.25,1);
  --dur-quick:150ms;
  --dur-base:200ms;
  /* spacing, radii, targets */
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:20px; --sp-6:24px; --sp-8:32px; --sp-10:40px; --sp-12:48px;
  --gutter-page:20px;
  --radius-row:12px; --radius-card:16px; --radius-input:14px; --radius-composer:28px; --radius-code:10px; --radius-pill:999px;
  --hit-min:44px;
  /* families: every stack ends in a generic family so text renders before (or without) the web fonts */
  --font-serif:'Tsukaima Serif',Georgia,serif;
  --font-sans:'Tsukaima Sans',system-ui,sans-serif;
  --font-mono:'Tsukaima Mono',ui-monospace,monospace;
  --font-kanji:'Tsukaima Kanji',serif;
}

/* ---- @font-face (renamed subsets of Source Serif 4, Instrument Sans, IBM Plex Mono and Noto Serif JP built by scripts/site/build-fonts.sh; see fonts/OFL.txt; weight ranges are each file's wght axis) ---- */
@font-face{font-family:'Tsukaima Serif';src:url(fonts/source-serif-4.woff2) format('woff2');font-style:normal;font-weight:200 900;font-display:swap}
@font-face{font-family:'Tsukaima Serif';src:url(fonts/source-serif-4-italic.woff2) format('woff2');font-style:italic;font-weight:200 900;font-display:swap}
@font-face{font-family:'Tsukaima Sans';src:url(fonts/instrument-sans.woff2) format('woff2');font-style:normal;font-weight:400 700;font-stretch:75% 100%;font-display:swap}
@font-face{font-family:'Tsukaima Mono';src:url(fonts/ibm-plex-mono.woff2) format('woff2');font-style:normal;font-weight:400;font-display:swap}
@font-face{font-family:'Tsukaima Kanji';src:url(fonts/noto-serif-jp-subset.woff2) format('woff2');font-style:normal;font-weight:200 900;font-display:swap;unicode-range:U+3044,U+4F7F,U+9B54}

/* ---- type roles (verbatim from design/tokens/typography.css) ---- */
:root{
  /* serif roles: wordmark, screen titles, agent status lines */
  --type-wordmark:600 28px/1.1 var(--font-serif);
  --type-title:600 22px/1.25 var(--font-serif);
  --type-status:italic 500 14px/1.3 var(--font-serif);
  /* sans roles: chat + UI */
  --type-body:400 15.5px/1.55 var(--font-sans);
  --type-ui:500 14px/1.4 var(--font-sans);
  --type-label:600 11px/1.2 var(--font-sans); /* letter-spacing .08em, uppercase */
  --type-caption:400 12.5px/1.4 var(--font-sans);
  --type-code:400 13px/1.6 var(--font-mono);
}

/* ---- base ---- */
html,body{margin:0}
body{background:var(--surface-page);color:var(--text-body);font:var(--type-body);-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-pressed)}
:focus-visible{outline:2px solid transparent;box-shadow:var(--ring-focus);border-radius:4px}
.wrap{max-width:1080px;margin:0 auto;padding:0 var(--sp-6)}
nav{display:flex;align-items:center;justify-content:space-between;padding:22px 0}
[lang="ja"]{font-family:var(--font-kanji)}
.lock{display:flex;align-items:center;gap:10px;font:var(--type-wordmark);font-size:22px;color:var(--text-body)}.lock img{height:24px;width:auto}.lock .k{font-family:var(--font-kanji);font-size:11px;color:var(--text-tertiary)}
.links{display:flex;gap:28px;font:var(--type-ui);color:var(--text-secondary)}.links a{color:inherit}.links a:hover{color:var(--text-body)}
.hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;padding:56px 0 72px}
h1{font:600 52px/1.08 var(--font-serif);letter-spacing:-.01em;margin:0 0 18px;text-wrap:pretty}
.lede{font:var(--type-body);font-size:18px;color:var(--text-secondary);max-width:46ch;margin:0 0 30px;text-wrap:pretty}
.cta{display:flex;gap:12px;flex-wrap:wrap;align-items:center}.cta small{font:var(--type-caption);color:var(--text-tertiary);margin-left:6px}
.btn{display:inline-flex;align-items:center;gap:8px;min-height:var(--hit-min);box-sizing:border-box;padding:12px 22px;border-radius:var(--radius-pill);font:600 14.5px/1 var(--font-sans);border:1px solid transparent}
.btn:focus-visible{border-radius:var(--radius-pill)}
/* white on --accent is 4.2:1, under WCAG AA at 14.5px, so filled buttons use the pressed shade (5.3:1); hover adds the press wash */
.btn.p{background:var(--accent-pressed);color:var(--accent-on)}.btn.p:hover{background:var(--accent-pressed) linear-gradient(var(--wash-press),var(--wash-press));color:var(--accent-on)}
.btn.s{background:var(--surface-raised);color:var(--text-body);border-color:var(--border-hairline)}.btn.s:hover{background:var(--surface-sunken);color:var(--text-body)}
.status{display:inline-flex;align-items:center;gap:8px;font:var(--type-status);color:var(--text-secondary);margin-bottom:22px}
.dot{width:7px;height:7px;border-radius:99px;background:var(--accent);animation:p 2s infinite}@keyframes p{0%,100%{opacity:1}50%{opacity:.35}}
.rule{border:0;border-top:1px solid var(--border-hairline);margin:0}
h2{font:var(--type-title);font-size:30px;margin:0 0 14px;text-wrap:pretty}
.sub{font:var(--type-body);font-size:17px;color:var(--text-secondary);max-width:58ch;margin:0 0 40px;text-wrap:pretty}
.label{font:var(--type-label);letter-spacing:.08em;text-transform:uppercase;color:var(--text-tertiary);margin-bottom:12px}
section{padding:72px 0}
footer{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding:28px 0 40px;font:var(--type-caption);color:var(--text-tertiary)}
@media (max-width:860px){.hero{grid-template-columns:1fr}h1{font-size:40px}.links a:not(:last-child){display:none}section{padding:56px 0}}
@media (prefers-reduced-motion:reduce){.dot{animation:none}}

/* ---- page ---- */
/* hero */
.hero{padding-top:40px}
.hero .status{margin-top:0}
.phone{justify-self:center;width:min(360px,100%);aspect-ratio:412/824;box-sizing:border-box;border-radius:32px;border:1px solid var(--border-hairline);background:var(--surface-raised);overflow:hidden;box-shadow:var(--shadow-float)}
.obt{display:inline-flex;align-items:center;min-height:var(--hit-min);border:0;border-radius:var(--radius-row)}
.obt img{display:block;width:161px;height:auto}
.fine{display:flex;flex-direction:column;gap:4px;margin:14px 0 0}
.fine small{font:var(--type-caption);color:var(--text-tertiary)}
/* small inline links: --accent on cream is 3.8:1, so the pressed shade (4.8:1), underlined to stand apart from the text */
.fine a,footer a{color:var(--accent-pressed);text-decoration:underline;text-underline-offset:2px}

/* how it works */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:32px;counter-reset:s}
.step{border-top:1px solid var(--border-hairline);padding-top:18px}
.step::before{counter-increment:s;content:counter(s,decimal-leading-zero);display:block;font:600 13px/1 var(--font-serif);color:var(--accent);margin-bottom:14px;letter-spacing:.06em}
.step h3{font:600 20px/1.3 var(--font-serif);margin:0 0 8px}.step p{margin:0;color:var(--text-secondary);text-wrap:pretty}

/* features */
.feat{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:56px;align-items:center;padding:56px 0}
.feat:last-child{padding-bottom:0}
.feat.r{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr)}.feat.r .copy{order:2}
.feat h3{font:600 26px/1.25 var(--font-serif);margin:0 0 12px;text-wrap:pretty}.feat p{margin:0 0 10px;color:var(--text-secondary);text-wrap:pretty}
.demo{background:var(--surface-raised);border:1px solid var(--border-hairline);border-radius:var(--radius-card);padding:20px 0;overflow:hidden}
.demo .stack{display:flex;flex-direction:column;gap:6px}
#d-drawer{padding:0;display:flex}

/* fact cards (voice, self-hosted) */
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px}
.fact{background:var(--surface-raised);border:1px solid var(--border-hairline);border-radius:var(--radius-card);padding:22px}
.fact b{display:block;font:600 19px/1.3 var(--font-serif);margin-bottom:6px}.fact span{color:var(--text-secondary);text-wrap:pretty}

/* self-hosted */
.self{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:48px;align-items:center}
.self .sub{margin-bottom:0}
.self + .facts{margin-top:48px}
.settings-mock{min-width:0;box-sizing:border-box;background:var(--surface-raised);border:1px solid var(--border-hairline);border-radius:var(--radius-card);padding:20px}
.sm-title{font:var(--type-title);font-size:18px;margin-bottom:14px}
.settings-mock dl{display:flex;flex-direction:column;gap:10px;margin:0}
.sm-row{background:var(--surface-sunken);border-radius:var(--radius-input);padding:10px 14px}
.sm-row dt{font:var(--type-caption);color:var(--text-secondary);margin-bottom:2px}
.sm-row dd{margin:0;font:var(--type-code);color:var(--text-body);overflow-wrap:anywhere}
.vh{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.sm-result{display:flex;align-items:center;gap:8px;margin:16px 0 0;font:var(--type-status);color:var(--text-secondary)}
.sm-dot{flex-shrink:0;width:7px;height:7px;border-radius:99px;background:var(--status-ok)}

/* faq */
.faq{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:12px 48px;margin-top:32px}
details{border-top:1px solid var(--border-hairline);padding:16px 0}
details summary{cursor:pointer;list-style:none;font:600 16.5px/1.35 var(--font-serif);display:flex;justify-content:space-between;gap:16px}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";color:var(--text-tertiary);font:400 20px/1 var(--font-sans)}details[open] summary::after{content:"–"}
details p{margin:10px 0 0;color:var(--text-secondary);text-wrap:pretty}

/* haiku */
.quiet{display:flex;align-items:center;gap:28px;padding:56px 0 72px}
.quiet img{width:220px;height:auto;flex-shrink:0;opacity:.8}
.quiet p{margin:0;font:var(--type-status);font-size:18px;color:var(--text-secondary);max-width:52ch}

/* final call to action */
.final{text-align:center;padding:80px 0}.final h2{font-size:38px}
.final .sub{margin:0 auto 30px}
.final .cta{justify-content:center}
.final .fine{align-items:center}

@media (max-width:860px){
  .self,.feat,.feat.r{grid-template-columns:1fr}.feat{gap:32px}.feat.r .copy{order:0}
  .phone{width:min(300px,100%)}
  .quiet{flex-direction:column;align-items:flex-start}
}

/* ---- components ---- */
/* Static ports of design/components/{chat,chrome}/*.jsx for the demos and the hero phone. Icons are an inline
   <symbol> sprite (stroke icons drawn on a 24 grid) used through <svg class="i"><use>. */
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.i{width:18px;height:18px;flex-shrink:0;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.approval[hidden],.approval-done[hidden]{display:none}

/* status line (StatusLine.jsx); the context meter sits at the right end, as in the app */
.sl{display:flex;flex-wrap:wrap;align-items:center;gap:2px 8px;padding:6px var(--gutter-page);font:var(--type-status);color:var(--text-secondary)}
.sl .d{width:7px;height:7px;border-radius:99px;background:var(--text-tertiary);flex-shrink:0}
.sl.thinking .d,.sl.tool .d{background:var(--accent);animation:p 2s infinite}
.sl.approval .d{background:var(--status-warn)}
.sl .meter{margin-left:auto;font:var(--type-caption);color:var(--text-tertiary)}
#flair{transition:opacity var(--dur-quick) var(--ease-quiet)}
@media (prefers-reduced-motion:reduce){.sl.thinking .d,.sl.tool .d{animation:none}#flair{transition:none}}

/* messages (UserBubble.jsx, AssistantMessage.jsx) */
.bubble{width:fit-content;max-width:82%;box-sizing:border-box;margin:4px var(--gutter-page) 4px auto;padding:10px 14px;background:var(--bubble-user);color:var(--bubble-user-ink);font:var(--type-body);border-radius:var(--radius-card) var(--radius-card) 6px var(--radius-card)}
.msg{max-width:640px;padding:4px var(--gutter-page);font:var(--type-body);color:var(--text-body)}
.msg p{margin:0;color:inherit}
.msg .rsn{display:flex;align-items:center;gap:4px;margin:0 0 6px;padding:4px 0;font:var(--type-caption);color:var(--text-tertiary)}.msg .rsn .i{width:16px;height:16px}

/* tool row (ToolRow.jsx) */
.toolrow{margin:6px var(--gutter-page);border:1px solid var(--border-hairline);border-radius:var(--radius-row);background:var(--surface-raised);overflow:hidden}
.toolrow .th{display:flex;align-items:center;gap:10px;min-height:44px;box-sizing:border-box;padding:8px 12px;font:var(--type-ui);color:var(--text-secondary)}
.toolrow .th>.i:first-child{color:var(--text-tertiary)}.toolrow.run .th>.i:first-child{color:var(--accent)}
.toolrow .tn{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.toolrow .tn span{color:var(--text-tertiary)}
.toolrow .s{width:16px;height:16px;color:var(--text-tertiary)}
.toolrow .x{transition:transform var(--dur-base) var(--ease-quiet)}.toolrow.open .x{transform:rotate(180deg)}
.tr-b{padding:0 12px 12px;font:var(--type-caption);color:var(--text-secondary)}
.tr-b .code{margin:0}

/* code block (CodeBlock.jsx); demo code wraps instead of scrolling so nothing is clipped on a phone */
.code{background:var(--code-bg);border-radius:var(--radius-code);margin:8px 0}
.code .ch{display:flex;align-items:center;justify-content:space-between;padding:6px 6px 0 14px}
.code .ch>span:first-child{font:var(--type-label);letter-spacing:.08em;text-transform:uppercase;color:rgba(216,211,232,.62)}
.code .cp{display:inline-flex;align-items:center;gap:5px;padding:6px 8px;font:var(--type-caption);color:rgba(216,211,232,.75)}
.code .cp .i{width:16px;height:16px}
.code pre{margin:0;padding:4px 14px 12px;font:var(--type-code);color:var(--code-ink);white-space:pre-wrap;overflow-wrap:anywhere}

/* approval card (ApprovalCard.jsx) */
.approval:not(.sl){margin:8px var(--gutter-page);padding:16px;background:var(--surface-raised);border:1px solid var(--border-hairline);border-radius:var(--radius-card);box-shadow:var(--shadow-float)}
.approval:not(.sl) .ah{display:flex;align-items:center;gap:8px;margin:0 0 10px;font:var(--type-status);color:var(--text-body)}
.approval:not(.sl) .ah .i{width:20px;height:20px;color:var(--status-warn)}
.tl{margin-bottom:6px;font:var(--type-label);letter-spacing:.08em;text-transform:uppercase;color:var(--text-tertiary)}
.approval:not(.sl) pre{margin:0 0 14px;padding:10px 12px;background:var(--code-bg);border-radius:var(--radius-code);font:var(--type-code);color:var(--code-ink);white-space:pre-wrap;overflow-wrap:anywhere}
.acts{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px}
button.btn{cursor:pointer}
.btn .i{width:20px;height:20px}
.btn.deny,.btn.deny:hover{color:var(--status-danger)}
.approval-done .reset{margin:10px var(--gutter-page) 0}
.approval-done.denied .toolrow{display:none}

/* tasks card (the app's TodoCard: raised, hairline, "Tasks" + progress, one glyph per row) */
.tasks{display:flex;flex-direction:column;gap:6px;margin:6px var(--gutter-page);padding:12px;background:var(--surface-raised);border:1px solid var(--border-hairline);border-radius:var(--radius-row)}
.tk{display:flex;align-items:baseline;gap:8px}.tk b{font:var(--type-ui);color:var(--text-body)}.tk small{font:var(--type-caption);color:var(--text-tertiary)}
.t{display:flex;align-items:center;gap:8px;font:var(--type-ui);color:var(--text-body)}
.t .i{width:16px;height:16px}
.t.todo .i{color:var(--text-tertiary)}.t.doing .i{color:var(--accent)}.t.done .i{color:var(--status-ok)}
.t.done span{color:var(--text-tertiary);text-decoration:line-through}

/* drawer (Drawer.jsx, ConversationItem.jsx, DrawerLabel); the right side stands for the chat behind the scrim */
.drawer{display:flex;flex-direction:column;width:296px;max-width:86%;flex-shrink:0;box-sizing:border-box;background:var(--surface-raised);border-right:1px solid var(--border-hairline)}
.dh{display:flex;align-items:center;gap:10px;padding:20px 20px 10px;font:var(--type-wordmark);font-size:22px;color:var(--text-body)}
.dh img{width:auto;height:24px}.dh .k{font-family:var(--font-kanji);font-size:11px;color:var(--text-tertiary)}
.search{display:flex;align-items:center;gap:8px;margin:6px 20px 4px;padding:10px 14px;background:var(--surface-sunken);border-radius:var(--radius-input);font:var(--type-body);color:var(--text-secondary)}
.dlist{flex:1;padding:0 8px 8px}
.dlabel{padding:16px 12px 6px;font:var(--type-label);letter-spacing:.08em;text-transform:uppercase;color:var(--text-tertiary)}
.citem{display:flex;align-items:center;gap:10px;min-height:44px;box-sizing:border-box;padding:10px 12px;border-radius:var(--radius-row);font:var(--type-ui);color:var(--text-body)}
.citem span{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.citem small{flex-shrink:0;font:var(--type-caption);color:var(--text-tertiary)}
.citem.sel{background:var(--accent-selected)}.citem.sel small{color:var(--text-body)}
.citem .i{width:20px;height:20px;color:var(--text-secondary)}
.dfoot{padding:8px;border-top:1px solid var(--border-hairline)}
/* scrim at .16, lighter than the kit's .28 on purpose: at .28 this demo was the heaviest element on the page */
.dside{flex:1;min-width:0;display:flex;flex-direction:column;gap:14px;padding:72px 20px;background:var(--surface-page);box-shadow:inset 0 0 0 999px rgba(39,34,32,.16)}
.dside i{height:10px;border-radius:99px;background:var(--surface-sunken)}.dside i:nth-child(1){width:56%;align-self:flex-end;height:36px;border-radius:var(--radius-card)}.dside i:nth-child(3){width:78%}.dside i:nth-child(4){width:40%}
@media (max-width:480px){.dside i{display:none}}

/* composer (Composer.jsx) */
.composer{display:flex;align-items:center;gap:4px;margin:6px 12px 10px;padding:6px;background:var(--surface-raised);border:1px solid var(--border-hairline);border-radius:var(--radius-composer);box-shadow:var(--shadow-float)}
.composer .ib,.tbar .ib{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;flex-shrink:0;color:var(--text-secondary)}
.composer .i.ib{width:24px;height:24px;padding:10px}
.composer .ph{flex:1;min-width:0;padding:11px 4px;font:var(--type-body);color:var(--text-tertiary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.composer .send{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;flex-shrink:0;border-radius:99px;background:var(--accent);color:var(--accent-on)}
.composer .send .i,.tbar .ib .i{width:24px;height:24px}

/* hero phone: a 412 x 824 dp chat screen (TopBar, StatusLine, messages, Composer) inside a rounded frame */
.phone{display:flex;flex-direction:column;position:relative;container-type:inline-size}
.phone .sl{flex-wrap:nowrap}.phone .sl>span:nth-child(2){flex-shrink:0}
.phone .sl .meter{min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
@container (max-width:340px){.phone .sl .meter{display:none}}
.sys{display:flex;justify-content:space-between;align-items:center;padding:12px 26px 0;font:600 12px/1 var(--font-sans);color:var(--text-body)}
.bat{width:20px;height:10px;box-sizing:border-box;border:1.5px solid currentColor;border-radius:3px;position:relative}.bat::after{content:"";position:absolute;inset:1.5px 5px 1.5px 1.5px;background:currentColor;border-radius:1px}
.tbar{display:flex;align-items:center;gap:4px;padding:8px 8px 2px}
.chip{display:inline-flex;align-items:center;gap:4px;min-height:36px;padding:0 8px 0 12px;border-radius:var(--radius-pill);font:var(--type-ui);color:var(--text-body)}
.sp{flex:1}
.pm{flex:1;min-height:0;overflow:hidden;display:flex;flex-direction:column;justify-content:flex-start;padding:6px 0 4px}
.pm>*{flex-shrink:0}
.gest{width:108px;height:4px;margin:2px auto 8px;border-radius:99px;background:var(--text-body);opacity:.35}