/* Thinking Walks — legal / support pages. iOS-grouped look, light + dark. */
:root{--bg:#F2F2F7;--card:#fff;--ink:#1C1C1E;--mute:#6E6E73;--line:rgba(60,60,67,.14);--blue:#007AFF;--green:#18C46E;
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Text","Helvetica Neue",Helvetica,Arial,sans-serif;color-scheme:light}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#000;--card:#1C1C1E;--ink:#F2F2F7;--mute:#98989D;--line:rgba(84,84,88,.6);--blue:#0A84FF;color-scheme:dark}}
:root[data-theme="dark"]{--bg:#000;--card:#1C1C1E;--ink:#F2F2F7;--mute:#98989D;--line:rgba(84,84,88,.6);--blue:#0A84FF;color-scheme:dark}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.55 var(--font);-webkit-font-smoothing:antialiased;letter-spacing:-.01em}
a{color:var(--blue)}
.top{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 80%,transparent);-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);border-bottom:.5px solid var(--line)}
.top div{max-width:720px;margin:0 auto;padding:10px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.top a.brand{display:flex;align-items:center;gap:9px;font-weight:600;color:var(--ink);text-decoration:none;font-size:16px}
.top a.brand img{width:26px;height:26px;border-radius:6.5px}
.top nav{display:flex;gap:16px;font-size:14px}
.top nav a{text-decoration:none;color:var(--mute)}
.top nav a[aria-current]{color:var(--ink);font-weight:600}
main{max-width:720px;margin:0 auto;padding:32px 16px 72px}
h1{font-size:clamp(30px,6vw,40px);line-height:1.1;letter-spacing:-.03em;margin:0 0 8px}
h2{font-size:21px;margin:34px 0 10px;letter-spacing:-.02em}
h3{font-size:17px;margin:18px 0 4px}
.sub{color:var(--mute);margin:0 0 22px}
.card{background:var(--card);border-radius:14px;padding:4px 18px;margin:10px 0}
.card>p,.card li{margin:12px 0}
.card ul{padding-left:20px}
.item{padding:13px 0;border-top:.5px solid var(--line)}
.item:first-child{border-top:0}
.item b{display:block}
.item span{display:block;font-size:15px;margin-top:2px}
.item i{display:block;font-style:normal;font-size:13px;color:var(--mute);margin-top:3px}
table{width:100%;border-collapse:collapse;font-size:15px}
td,th{text-align:left;padding:10px 8px 10px 0;border-top:.5px solid var(--line);vertical-align:top}
th{font-size:13px;color:var(--mute);font-weight:600;border-top:0}
.tbl{overflow-x:auto}
details{border-top:.5px solid var(--line);padding:12px 0}
details:first-child{border-top:0}
summary{font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--mute);font-weight:400}
details[open] summary::after{content:"–"}
details p,details ul{margin:8px 0 2px;font-size:16px}
.lang-switch{display:inline-block;margin:0 0 18px;font-size:14px}
hr{border:0;border-top:.5px solid var(--line);margin:48px 0 8px}
.foot{color:var(--mute);font-size:13px;margin-top:40px;display:flex;flex-wrap:wrap;gap:6px 14px}
.foot a{color:var(--mute)}