/* 旅者的SNS助手 — contemporary studio aesthetic: paper, ink, generous whitespace, the work at the center. Mobile first. */
:root{
  --paper:#f6f3ee; --paper-2:#fbfaf7; --ink:#1d1b19; --ink-2:#4a4642; --mute:#8a8278; --line:#e4ded4; --line-2:#cfc7ba;
  --accent:#9a6b2f; --accent-2:#c48f4a; --ok:#3f7d5a; --bad:#a63d3d; --warn:#b07a1f;
  --serif:"Noto Serif SC","Noto Serif JP","Source Han Serif SC","Songti SC","Hiragino Mincho ProN","Yu Mincho",Georgia,serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans","Noto Sans CJK SC","Microsoft YaHei",Roboto,sans-serif;
  --radius:2px; --gap:16px; --max:1080px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line-2)}
a:hover{border-color:var(--ink)}
h1,h2,h3,.h1,.h2{font-family:var(--serif);font-weight:400;letter-spacing:.02em;margin:0}
.h1{font-size:28px;line-height:1.3;margin-bottom:6px}
.h2{font-size:19px;margin:28px 0 12px}
.muted{color:var(--mute)}
.small{font-size:13px}
.tiny{font-size:12px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12.5px;word-break:break-all}
.inline{display:inline}
.nowrap{white-space:nowrap}
.right{text-align:right}

/* header */
.top{display:flex;align-items:center;gap:24px;padding:14px 20px;max-width:var(--max);margin:0 auto}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:17px;letter-spacing:.08em;border:0}
.brand.big{font-size:22px;margin-bottom:28px}
.brand-mark{width:14px;height:14px;border:1.5px solid var(--ink);border-radius:50%;position:relative}
.brand-mark:after{content:"";position:absolute;inset:3px;background:var(--accent);border-radius:50%}
.topnav{display:none;gap:22px;margin-left:auto}
.topnav a{border:0;padding:6px 0;color:var(--ink-2);letter-spacing:.06em}
.topnav a.on{color:var(--ink);border-bottom:1px solid var(--ink)}
.top-right{display:none;align-items:center;gap:14px;color:var(--mute);font-size:13px}
.link{background:none;border:0;padding:0;color:var(--mute);cursor:pointer;font:inherit;font-size:13px;letter-spacing:.04em}
.link:hover{color:var(--ink)}
.link.on{color:var(--ink);text-decoration:underline}

/* page */
.page{max-width:var(--max);margin:0 auto;padding:12px 20px 96px}
.foot{display:none}
.flash{padding:10px 14px;margin:0 0 14px;border-left:2px solid var(--ink);background:var(--paper-2);font-size:14px}
.flash.success{border-color:var(--ok)}
.flash.error{border-color:var(--bad);color:var(--bad)}
.empty{text-align:center;padding:64px 0;color:var(--mute)}
.empty .h1{color:var(--ink)}
.head{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin:8px 0 22px;flex-wrap:wrap}
.head .h1{margin:0}
.sub{color:var(--mute);font-size:13px;letter-spacing:.1em;text-transform:uppercase}

/* tabbar (mobile) */
.tabbar{position:fixed;left:0;right:0;bottom:0;display:flex;background:rgba(246,243,238,.92);backdrop-filter:blur(10px);border-top:1px solid var(--line);padding:6px 0 calc(6px + env(safe-area-inset-bottom));z-index:20}
.tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;border:0;color:var(--mute);font-size:11px;letter-spacing:.06em}
.tabbar a.on{color:var(--ink)}
.tabbar svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}

/* buttons & forms */
.btn{display:inline-block;padding:10px 18px;border:1px solid var(--ink);background:transparent;color:var(--ink);font:inherit;font-size:14px;letter-spacing:.08em;cursor:pointer;border-radius:var(--radius);line-height:1.3;text-align:center}
.btn.primary{background:var(--ink);color:var(--paper)}
.btn.ghost{border-color:var(--line-2);color:var(--ink-2)}
.btn.danger{border-color:var(--bad);color:var(--bad)}
.btn.sm{padding:6px 12px;font-size:12.5px}
.btn.wide{width:100%}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn:hover:not(:disabled){opacity:.85}
.form label{display:block;margin:0 0 16px;font-size:13px;color:var(--ink-2);letter-spacing:.04em}
.form label small{color:var(--mute);margin-left:6px;letter-spacing:0}
.form input:not([type=checkbox]):not([type=radio]),.form textarea,.form select{display:block;width:100%;margin-top:6px;padding:10px 12px;border:1px solid var(--line-2);background:var(--paper-2);font:inherit;font-size:15px;color:var(--ink);border-radius:var(--radius)}
.form textarea{min-height:140px;resize:vertical;font-family:var(--serif);font-size:16px;line-height:1.8}
.form input:focus,.form textarea:focus,.form select:focus{outline:none;border-color:var(--ink)}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.check{display:flex!important;align-items:center;gap:10px;cursor:pointer}
.check input{width:18px;height:18px;margin:0;accent-color:var(--ink)}
.actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-top:12px}
.hint{font-size:12.5px;color:var(--mute);margin:-8px 0 14px}

/* cards & lists */
.card{background:var(--paper-2);border:1px solid var(--line);padding:18px;margin-bottom:14px;border-radius:var(--radius)}
.card.flat{background:transparent}
.list{list-style:none;margin:0;padding:0}
.list li{display:flex;gap:12px;align-items:flex-start;padding:14px 0;border-bottom:1px solid var(--line)}
.list li:last-child{border-bottom:0}
.list .grow{flex:1;min-width:0}
.list .title{font-family:var(--serif);font-size:16px}
.list .meta{color:var(--mute);font-size:12.5px;margin-top:2px}
.pill{display:inline-block;padding:2px 9px;border:1px solid var(--line-2);border-radius:999px;font-size:11.5px;letter-spacing:.06em;color:var(--ink-2);white-space:nowrap}
.pill.ok{border-color:var(--ok);color:var(--ok)}
.pill.bad{border-color:var(--bad);color:var(--bad)}
.pill.warn{border-color:var(--warn);color:var(--warn)}
.pill.ink{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.pf{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
table.tbl{width:100%;border-collapse:collapse;font-size:13.5px}
table.tbl th{text-align:left;font-weight:400;color:var(--mute);font-size:12px;letter-spacing:.08em;padding:8px 6px;border-bottom:1px solid var(--line-2)}
table.tbl td{padding:9px 6px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl-wrap{overflow-x:auto}

/* works grid */
.works{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.work{border:0;display:block;background:var(--paper-2);border:1px solid var(--line)}
.work .thumb{aspect-ratio:1;background:#ebe6dd;display:flex;align-items:center;justify-content:center;color:var(--mute);font-family:var(--serif);font-size:30px;overflow:hidden}
.work .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.work .cap{padding:10px 12px}
.work .cap .title{font-family:var(--serif);font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.work .cap .meta{font-size:12px;color:var(--mute);display:flex;justify-content:space-between;gap:8px;margin-top:3px}
.new-work{display:flex;align-items:center;justify-content:center;aspect-ratio:1;border:1px dashed var(--line-2);color:var(--mute);font-family:var(--serif);font-size:16px;letter-spacing:.1em}
.new-work:hover{border-color:var(--ink);color:var(--ink)}

/* media strip */
.media-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:10px 0 18px}
.media-item{position:relative;aspect-ratio:1;background:#ebe6dd;overflow:hidden;border:1px solid var(--line)}
.media-item img,.media-item video{width:100%;height:100%;object-fit:cover;display:block}
.media-item .kind{position:absolute;left:6px;top:6px;font-size:10px;letter-spacing:.1em;background:rgba(29,27,25,.75);color:var(--paper);padding:2px 6px}
.media-item .del{position:absolute;right:4px;top:4px}
.media-item .del button{background:rgba(246,243,238,.9);border:0;width:24px;height:24px;border-radius:50%;cursor:pointer;font-size:14px;line-height:1}
.media-item.audio{display:flex;align-items:center;justify-content:center;flex-direction:column;font-size:12px;color:var(--mute);padding:8px;text-align:center}
.dropzone{border:1px dashed var(--line-2);padding:22px;text-align:center;color:var(--mute);font-size:13.5px;cursor:pointer;background:var(--paper-2)}
.dropzone.over{border-color:var(--ink);color:var(--ink)}
.form .dropzone input[type=file]{display:none}
.preview-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.preview-list .pv{width:64px;height:64px;object-fit:cover;border:1px solid var(--line)}
.preview-list .pv.file{display:flex;align-items:center;justify-content:center;font-size:10px;color:var(--mute);padding:4px;text-align:center;word-break:break-all}

/* platform chooser */
.plat{display:grid;grid-template-columns:1fr;gap:8px;margin:8px 0 14px}
.plat label{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--line);background:var(--paper-2);cursor:pointer;margin:0}
.plat label.on{border-color:var(--ink)}
.plat input{width:18px;height:18px;accent-color:var(--ink);margin:0}
.plat .pname{font-size:14px}
.plat .plabel{color:var(--mute);font-size:12.5px}
.slots{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:8px 0 14px}
.slots label{margin:0;text-align:center;padding:10px 0;border:1px solid var(--line);background:var(--paper-2);cursor:pointer;font-size:15px;font-family:var(--serif)}
.slots label.on{border-color:var(--ink);background:var(--ink);color:var(--paper)}
.slots input{display:none}

/* interactions */
.inter{display:block;border:1px solid var(--line);background:var(--paper-2);padding:14px 16px;margin-bottom:10px;border-radius:var(--radius)}
.inter .top-line{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--mute);margin-bottom:6px;flex-wrap:wrap}
.inter .who{color:var(--ink);font-weight:500}
.inter .body{font-family:var(--serif);font-size:15.5px;line-height:1.7;white-space:pre-wrap;word-break:break-word}
.inter.unread{border-left:2px solid var(--accent)}
.inter .draft{margin-top:10px;padding:8px 12px;border-left:2px solid var(--line-2);font-size:13.5px;color:var(--ink-2);white-space:pre-wrap}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 16px}
.filters a{border:1px solid var(--line-2);padding:5px 12px;border-radius:999px;font-size:12.5px;color:var(--ink-2)}
.filters a.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.screenshot{max-width:100%;border:1px solid var(--line);margin-top:12px}

/* stats */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:20px}
.stat{border:1px solid var(--line);background:var(--paper-2);padding:14px}
.stat .n{font-family:var(--serif);font-size:26px}
.stat .l{font-size:12px;color:var(--mute);letter-spacing:.06em}
.stat.bad .n{color:var(--bad)}
.stat.ok .n{color:var(--ok)}
.subnav{display:flex;gap:16px;flex-wrap:wrap;margin:0 0 20px;font-size:13.5px}
.subnav a{border:0;color:var(--ink-2);padding-bottom:3px}
.subnav a.on{color:var(--ink);border-bottom:1px solid var(--ink)}
.kv{display:grid;grid-template-columns:160px 1fr;gap:6px 14px;font-size:13.5px}
.kv dt{color:var(--mute)}
.kv dd{margin:0;word-break:break-all}
pre.code{background:var(--paper-2);border:1px solid var(--line);padding:12px;font-size:12.5px;overflow-x:auto;white-space:pre-wrap;word-break:break-all}

/* auth */
body.auth{min-height:100vh}
.auth-wrap{min-height:100vh;display:grid;grid-template-columns:1fr}
.auth-art{display:none;position:relative;background:#ece7de;overflow:hidden}
.stroke{position:absolute;background:var(--ink);opacity:.9}
.s1{width:2px;height:60%;left:38%;top:20%;transform:rotate(12deg)}
.s2{width:38%;height:2px;left:30%;top:52%}
.s3{width:120px;height:120px;border:2px solid var(--accent);background:transparent;border-radius:50%;left:52%;top:28%;opacity:.8}
.auth-card{padding:48px 24px;max-width:440px;margin:0 auto;width:100%}
.locale-switch{margin-top:36px;display:flex;gap:14px}

@media (min-width:760px){
  body{font-size:15.5px}
  .topnav,.top-right{display:flex}
  .top-right{margin-left:12px}
  .tabbar{display:none}
  .page{padding:24px 24px 60px}
  .foot{display:block;text-align:center;color:var(--mute);font-size:12px;padding:40px 0;letter-spacing:.1em}
  .works{grid-template-columns:repeat(4,1fr);gap:18px}
  .media-strip{grid-template-columns:repeat(6,1fr)}
  .plat{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:repeat(4,1fr)}
  .h1{font-size:34px}
  .auth-wrap{grid-template-columns:1.1fr 1fr}
  .auth-art{display:block}
  .auth-card{padding:80px 56px;max-width:520px}
  .two{display:grid;grid-template-columns:1fr 1fr;gap:28px}
}