:root{--bg:#0B0F0E;--panel:#121917;--panel2:#18211E;--line:#24302C;--fg:#EAF2EF;--muted:#93A39D;
--accent:#3BF0A8;--accent-ink:#04140D;--warn:#FFB547;--radius:18px;color-scheme:dark}
@media (prefers-color-scheme:light){:root{--bg:#F4F7F6;--panel:#FFFFFF;--panel2:#EEF4F1;--line:#DCE5E1;--fg:#0E1714;
--muted:#5D6D67;--accent:#0FA968;--accent-ink:#FFFFFF;--warn:#B76E00;color-scheme:light}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:3px}
.wrap{max-width:760px;margin:0 auto;padding:0 16px}
header.top{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(12px);
-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;gap:12px;height:58px}
.logo{width:34px;height:34px;border-radius:10px;background:var(--accent);color:var(--accent-ink);font-weight:800;font-size:14px;
display:grid;place-items:center;letter-spacing:-.5px;flex:none;text-decoration:none}
.brand{font-weight:700;font-size:16px;color:var(--fg);text-decoration:none;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pill{font-size:14px;font-weight:600;padding:8px 14px;border-radius:999px;background:var(--panel2);color:var(--fg);text-decoration:none;white-space:nowrap}
.hero{padding:40px 0 22px}.hero h1{font-size:clamp(30px,7vw,44px);line-height:1.08;letter-spacing:-.02em;margin:0 0 12px}
.hero h1 em{font-style:normal;color:var(--accent)}.hero p{color:var(--muted);margin:0;font-size:18px}
.quick{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:26px 0 8px;counter-reset:q}
.quick div{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:12px;font-size:14px;line-height:1.35;counter-increment:q}
.quick div:before{content:counter(q);display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--accent);
color:var(--accent-ink);font-weight:800;font-size:13px;margin-bottom:8px}
@media (max-width:620px){.quick{grid-template-columns:1fr 1fr}}
h2.sec{font-size:14px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:34px 0 12px}
.cards{display:grid;grid-template-columns:1fr 1fr;gap:12px}@media (max-width:560px){.cards{grid-template-columns:1fr}}
.card{display:flex;gap:14px;align-items:flex-start;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
padding:18px;text-decoration:none;color:var(--fg);transition:transform .15s,border-color .15s}
.card:hover{border-color:var(--accent);transform:translateY(-2px)}
.card .e{font-size:28px;line-height:1;flex:none}.card b{display:block;font-size:18px;margin-bottom:2px}
.card span{color:var(--muted);font-size:15px;line-height:1.4}
.card.main{border-color:color-mix(in srgb,var(--accent) 45%,var(--line))}
.help{margin:36px 0 50px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;
display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.help div{flex:1;min-width:220px}.help b{font-size:18px}.help p{margin:4px 0 0;color:var(--muted);font-size:15px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 20px;border-radius:14px;
background:var(--accent);color:var(--accent-ink);font-weight:700;text-decoration:none;white-space:nowrap}
.btn.ghost{background:var(--panel2);color:var(--fg)}
article{padding:28px 0 10px}article h1{font-size:clamp(28px,6.4vw,38px);line-height:1.12;letter-spacing:-.02em;margin:6px 0 14px}
.crumbs{font-size:14px;color:var(--muted)}.crumbs a{color:var(--muted)}
article>p{color:var(--fg)}
.step,.plain{margin:30px 0}.step h2,.plain h2{font-size:22px;line-height:1.3;margin:0 0 10px;display:flex;gap:12px;align-items:flex-start}
.step h2 .n{flex:none;width:32px;height:32px;border-radius:10px;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;
font-size:16px;font-weight:800;margin-top:-1px}
.step>p,.step>ul,.step>ol,.step>aside,.step>figure{margin-left:44px}@media (max-width:520px){.step>p,.step>ul,.step>ol,.step>aside,.step>figure{margin-left:0}}
figure{margin:16px 0 22px;text-align:center}figure img{width:100%;max-width:340px;height:auto;border-radius:22px;display:block;margin:0 auto;
background:var(--panel2)}
figcaption{font-size:14px;color:var(--muted);margin-top:8px}
.tip{background:var(--panel2);border-left:3px solid var(--accent);border-radius:12px;padding:12px 16px;margin:16px 0;font-size:16px}
.tip.warn{border-left-color:var(--warn)}
ul,ol{padding-left:22px}li{margin:6px 0}
.next{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:30px 0}@media (max-width:560px){.next{grid-template-columns:1fr}}
footer{border-top:1px solid var(--line);color:var(--muted);font-size:14px;padding:22px 0 40px}
.lb{position:fixed;inset:0;background:rgba(0,0,0,.86);display:none;place-items:center;z-index:50;padding:16px}
.lb.on{display:grid}.lb img{max-width:100%;max-height:92vh;border-radius:18px}
.muted{color:var(--muted)}.small{font-size:14px}
.draft{margin:18px 0 0;padding:10px 14px;border-radius:12px;background:color-mix(in srgb,var(--warn) 18%,transparent);color:var(--warn);font-weight:600;font-size:15px}
article p{overflow-wrap:anywhere}