:root{--bg:#f5f6f8;--surface:#fff;--fg:#14191f;--muted:#4f5a66;--line:#dfe3e8;--acc:#0f6b62;--acc-d:#0b524b;--acc-bg:#e9f6f3;
--warn:#8a4b00;--warn-bg:#fff7e6;--warn-line:#f1d59a;--code:#eef1f4;--radius:14px;--shadow:0 1px 2px rgba(16,24,40,.05),0 4px 14px rgba(16,24,40,.05)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--acc)} a:hover{color:var(--acc-d)}
:focus-visible{outline:3px solid #2563eb;outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-9999px;top:8px;background:#fff;padding:8px 12px;border-radius:8px;z-index:100}
.skip:focus{left:8px}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.topbar{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
.topbar-in{max-width:1180px;margin:0 auto;padding:10px 20px;display:flex;align-items:center;gap:16px;justify-content:space-between}
.brand{font-weight:700;letter-spacing:-.01em;text-decoration:none;color:var(--fg)} .brand small{display:block;font-weight:400;font-size:.72rem;color:var(--muted)}
.langsel{display:flex;gap:4px;align-items:center} .langsel span{font-size:.8rem;color:var(--muted);margin-right:6px}
.langsel button{font:600 .85rem/1 inherit;font-family:inherit;border:1px solid transparent;background:none;color:var(--muted);padding:7px 10px;border-radius:999px;cursor:pointer}
.langsel button[aria-pressed=true]{background:var(--acc-bg);color:var(--acc-d);border-color:#bfe3dc}
.langsel button:hover{color:var(--fg)}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px 80px}
.hero{padding:44px 0 18px} .eyebrow{color:var(--acc);font-weight:700;text-transform:uppercase;font-size:.78rem;letter-spacing:.08em;margin:0}
.hero h1{font-size:clamp(1.9rem,4vw,2.7rem);line-height:1.15;letter-spacing:-.02em;margin:.2em 0 .35em}
.lead{font-size:1.15rem;color:var(--muted);max-width:60ch;margin:0} .meta{color:var(--muted);font-size:.9rem}
.howto-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:18px 0 8px}
.howto-grid>div{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow)}
.howto-grid p{margin:.3em 0 0;color:var(--muted);font-size:.95rem}
.toc{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:8px 24px 16px;margin:22px 0 10px;box-shadow:var(--shadow)}
.toc h2{font-size:1.15rem;margin:.8em 0 .4em}
.toc-list{list-style:none;padding:0;margin:0;columns:2 320px;column-gap:36px}
.toc-list>li{break-inside:avoid;margin:0 0 14px} .toc-list>li>a{font-weight:700;text-decoration:none;color:var(--fg)}
.toc-list ol{margin:.25em 0 0;padding-left:1.4em;font-size:.93rem} .toc-list ol li{margin:.1em 0}
.toc-list ol a{text-decoration:none} .toc-list ol a:hover{text-decoration:underline}
.chapter{margin-top:46px}
.chapter>h2{font-size:1.75rem;letter-spacing:-.015em;margin:0 0 .2em;display:flex;align-items:center;gap:12px;padding-top:12px}
.num{display:inline-grid;place-items:center;min-width:2.1rem;height:2.1rem;padding:0 .4rem;border-radius:10px;background:var(--acc);color:#fff;font-size:1.05rem}
.chapter-lead{color:var(--muted);max-width:75ch;margin:.2em 0 18px}
.chapter>h3{margin:1.6em 0 .5em}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:6px 26px 18px;margin:16px 0;box-shadow:var(--shadow)}
.step h3{font-size:1.25rem;margin:.9em 0 .5em;letter-spacing:-.01em}
.step h3::before{content:attr(data-n);color:var(--acc);font-weight:700;margin-right:.5em;font-variant-numeric:tabular-nums}
ol.actions{counter-reset:a;list-style:none;padding:0;margin:.6em 0 1em}
ol.actions>li{counter-increment:a;position:relative;padding:.15em 0 .15em 2.4em;margin:.35em 0}
ol.actions>li::before{content:counter(a);position:absolute;left:0;top:.2em;width:1.65em;height:1.65em;border-radius:50%;background:var(--acc-bg);color:var(--acc-d);font-weight:700;font-size:.85rem;display:grid;place-items:center;border:1px solid #bfe3dc}
ol.actions ul{margin:.3em 0;padding-left:1.2em}
.ui{font-weight:600;background:var(--code);border:1px solid var(--line);border-radius:6px;padding:.05em .4em;white-space:nowrap;font-size:.94em}
code{font:.88em ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--code);padding:.1em .35em;border-radius:5px}
figure{margin:14px 0 18px}
.shot{display:block;width:100%;padding:0;border:1px solid var(--line);border-radius:12px;background:#fff;cursor:zoom-in;overflow:hidden;box-shadow:0 2px 10px rgba(16,24,40,.08)}
.shot img{display:block;width:100%;height:auto}
.shot.narrow{display:inline-block;width:auto;max-width:100%}
.shot.narrow img{width:auto;max-width:100%}
ol.actions[start="2"]{counter-reset:a 1}
ol.actions[start="3"]{counter-reset:a 2}
ol.actions[start="4"]{counter-reset:a 3}
ol.actions[start="5"]{counter-reset:a 4}
ol.actions[start="6"]{counter-reset:a 5}
ol.actions[start="7"]{counter-reset:a 6}
ol.actions[start="8"]{counter-reset:a 7}
ol.actions[start="9"]{counter-reset:a 8}

.shot:hover{border-color:#9fcfc6}
figcaption{font-size:.88rem;color:var(--muted);margin-top:8px}
figcaption::before{content:"▲ ";color:var(--acc);font-size:.7em;vertical-align:.15em}
.tips{padding-left:1.25em} .tips li{margin:.3em 0}
dl.legend{display:grid;grid-template-columns:minmax(140px,max-content) 1fr;gap:6px 18px;margin:.8em 0}
dl.legend dt{font-weight:700} dl.legend dd{margin:0;color:#2b333c}
@media (max-width:640px){dl.legend{grid-template-columns:1fr} dl.legend dd{margin-bottom:8px} .step{padding:4px 16px 14px}}
.note,.warn{border-radius:10px;padding:10px 14px;margin:12px 0;font-size:.95rem}
.note{background:var(--acc-bg);border:1px solid #c9e8e1}
.warn{background:var(--warn-bg);border:1px solid var(--warn-line);color:#5c3500}
.box{border:1px dashed #8cc7bc;border-radius:12px;padding:6px 16px 10px;margin:14px 0;background:#fbfefd}
.box-title{font-weight:700;margin:.6em 0 .2em}
.table-wrap{overflow-x:auto} table{border-collapse:collapse;width:100%;margin:.6em 0 1em;font-size:.95rem;background:var(--surface)}
th,td{border-bottom:1px solid var(--line);padding:9px 10px;text-align:left;vertical-align:top}
thead th{font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);border-bottom-width:2px}
tbody th{font-weight:700}
.pill{display:inline-block;font-size:.8rem;font-weight:600;padding:.15em .6em;border-radius:999px;margin:1px 0;white-space:nowrap}
.pill-info{background:#e8f1fb;color:#164e8a}.pill-wait{background:#fff4d6;color:#7a4a00}.pill-ok{background:#e5f6ec;color:#17643a}.pill-err{background:#fde8e8;color:#9b1c1c}
dl.faq dt{font-weight:700;margin-top:12px} dl.faq dd{margin:.2em 0 0}
.backtop{display:inline-block;margin-top:10px;font-size:.88rem}
dialog.zoom{border:0;padding:0;max-width:96vw;max-height:94vh;border-radius:12px;background:#fff;box-shadow:0 20px 60px rgba(0,0,0,.4)}
dialog.zoom::backdrop{background:rgba(10,14,20,.72)}
dialog.zoom img{display:block;max-width:96vw;height:auto}
dialog.zoom .zbar{position:sticky;top:0;display:flex;justify-content:space-between;align-items:center;gap:12px;background:#fff;border-bottom:1px solid var(--line);padding:8px 12px;font-size:.9rem}
dialog.zoom button{font:600 .9rem inherit;font-family:inherit;border:1px solid var(--line);background:#fff;border-radius:999px;padding:6px 14px;cursor:pointer}
footer.foot{border-top:1px solid var(--line);margin-top:60px;padding:24px 0;color:var(--muted);font-size:.88rem}
[data-lang-block][hidden]{display:none}
@media print{.topbar,.howto,.backtop{display:none} .step{box-shadow:none;break-inside:avoid-page} .shot{box-shadow:none} body{background:#fff} .toc{break-after:page}}