.stack-app{--paper:var(--card-background);--ink:var(--card-text-color-main);--muted:var(--card-text-color-secondary);--accent:var(--accent-color);--line:var(--card-separator-color);--white:#fffcf5}
.stack-app *{box-sizing:border-box}.stack-app{scroll-behavior:smooth;scroll-padding-top:24px}.stack-app{background:var(--card-background);color:inherit;font-family:var(--base-font-family)}
.stack-app a{color:inherit;text-underline-offset:4px}.stack-app a:hover{color:inherit}.stack-app button,
.stack-app a{touch-action:manipulation}.stack-app button:focus-visible,
.stack-app a:focus-visible{outline:3px solid #197a72;outline-offset:4px}
.stack-app .mast{border-top:1px solid var(--card-separator-color);border-bottom:1px solid var(--card-separator-color);padding:50px max(5vw,24px) 40px}.stack-app .eyebrow{font-family:var(--base-font-family);letter-spacing:.16em;color:inherit;text-transform:uppercase}
.stack-app .mast h1{font-family:var(--base-font-family);font-weight:700;margin:18px 0;color:inherit;letter-spacing:-.03em}.stack-app .mast p{max-width:760px;color:inherit;margin:16px 0}.stack-app .mast .meta{font-size:13px;letter-spacing:.03em}
.stack-app .layout{display:grid;grid-template-columns:238px minmax(0,1fr);max-width:1430px;margin:auto;padding:38px 36px;gap:52px}.stack-app .rail{align-self:start;position:sticky;top:24px;font-size:13px}.stack-app .rail strong{display:block;color:inherit;font-size:11px;letter-spacing:.15em;margin:8px 0 14px}.stack-app .rail a{display:block;text-decoration:none;color:inherit;padding:6px 12px;border-left:1px solid var(--card-separator-color);line-height:1.6}.stack-app .rail a:hover{border-color:var(--card-separator-color);color:inherit;background:var(--card-background)}.stack-app .rail .remote{border-top:1px solid var(--card-separator-color);padding-top:18px;margin-top:22px}
.stack-app main{min-width:0;max-width:1030px}.stack-app .orientation{border:1px solid var(--card-separator-color);background:var(--card-background);padding:24px;margin-bottom:28px}.stack-app .orientation p{margin:4px 0;color:inherit}.stack-app .orientation b{color:inherit}.stack-app .flow{display:grid;grid-template-columns:repeat(4,1fr);margin:24px 0 32px;gap:1px;border:1px solid var(--card-separator-color);background:var(--card-background)}.stack-app .step{background:var(--card-background);padding:18px}.stack-app .step span{font-family:var(--base-font-family);color:inherit}.stack-app .step h3{font-family:var(--base-font-family);margin:8px 0}.stack-app .step p{color:inherit;font-size:13px;line-height:1.7;margin:0}
.stack-app .rate{background:var(--card-background);color:inherit;padding:26px 28px;margin-bottom:42px}.stack-app .rate .label{font-family:var(--base-font-family);letter-spacing:.12em;opacity:.75}.stack-app .rate h2{margin:4px 0 14px;font-family:var(--base-font-family)}.stack-app .rate button{font-family:var(--base-font-family);cursor:pointer;border:1px solid var(--card-separator-color);color:inherit;background:transparent;padding:8px 20px;margin:0 8px 10px 0}.stack-app .rate button[aria-pressed=true]{background:var(--card-background);color:inherit;border-color:var(--card-separator-color)}.stack-app .values{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:14px 0}.stack-app .values strong{font-family:var(--base-font-family);display:block}.stack-app .values small{font-size:12px;opacity:.8}.stack-app .rate p{font-size:12px;line-height:1.8;opacity:.8;margin:12px 0 0}
.stack-app article{font-size:16px}.stack-app article>h1{font-family:var(--base-font-family);margin:38px 0 20px}.stack-app article>h1+p{font-size:14px;color:inherit}.stack-app article h2{font-family:var(--base-font-family);padding-top:30px;border-top:1px solid var(--card-separator-color);margin:48px 0 22px;letter-spacing:-.02em}.stack-app article h3{font-size:19px;line-height:1.6;margin:30px 0 12px}.stack-app article p{margin:14px 0}.stack-app article strong{font-weight:650}.stack-app article img{width:100%;height:auto;background:var(--card-background);margin:18px 0}.stack-app article ul,
.stack-app article ol{padding-left:24px}.stack-app article li{padding-left:3px;margin:8px 0}.stack-app article pre{white-space:pre-wrap;overflow-wrap:anywhere;border-left:1px solid var(--card-separator-color);padding:18px 22px;background:var(--card-background);line-height:1.7;font-size:13px}.stack-app article code{font-family:Consolas,'Microsoft YaHei',monospace;font-size:.9em}.stack-app article p code,
.stack-app article td code{background:var(--card-background);padding:2px 4px}.stack-app article table{border-collapse:collapse;display:block;overflow-x:auto;font-size:13px;line-height:1.7;margin:22px 0;width:100%}.stack-app article th{text-align:left;background:var(--card-background);color:inherit;font-weight:650}.stack-app article td,
.stack-app article th{padding:12px 14px;border-bottom:1px solid var(--card-separator-color);vertical-align:top;min-width:75px}.stack-app article td:first-child{font-weight:600}.stack-app article tbody tr:nth-child(even){background:var(--card-background)}.stack-app .footer{font-size:12px;color:inherit;padding:24px 0;border-top:1px solid var(--card-separator-color);margin-top:50px}
@media(max-width:1000px){.stack-app .layout{grid-template-columns:180px minmax(0,1fr);gap:28px;padding:28px 24px}.stack-app .flow{grid-template-columns:repeat(2,1fr)}.stack-app article h2{font-size:26px}}
@media(max-width:720px){.stack-app .mast{padding:30px 22px}.stack-app .layout{display:block;padding:24px 18px}.stack-app .rail{position:static;margin-bottom:28px}.stack-app .rail nav{display:flex;gap:4px;overflow:auto;padding-bottom:10px}.stack-app .rail nav a{min-width:150px;border-left:0;border-bottom:1px solid var(--card-separator-color)}.stack-app .rail .remote{display:none}.stack-app .values{grid-template-columns:1fr;gap:10px}.stack-app .values>div{display:flex;align-items:baseline;justify-content:space-between}.stack-app .values strong{font-size:29px}.stack-app .rate{padding:24px 18px}.stack-app .step{padding:14px}.stack-app .flow{margin-bottom:24px}.stack-app article{font-size:15px}.stack-app article h2{font-size:25px}.stack-app article table{font-size:12px}}
@media print{.stack-app .rail,
.stack-app .rate button{display:none}.stack-app .layout{display:block;padding:0}.stack-app .mast{padding:20px 0}.stack-app .flow,
.stack-app .rate,
.stack-app .orientation{break-inside:avoid}.stack-app{background:var(--card-background);color:inherit}.stack-app a{color:inherit}.stack-app article h2{break-after:avoid}.stack-app article table{font-size:11px}.stack-app article img{max-height:180mm;object-fit:contain}.stack-app .rate{background:var(--card-background);color:inherit;border:1px solid var(--card-separator-color)}}
@media(prefers-reduced-motion:reduce){.stack-app{scroll-behavior:auto}}