:root{
  --bg:#f3f5f3;--surface:#ffffff;--surface-2:#eaeeea;--text:#17201a;--muted:#5d685f;
  --border:#dce3dc;--primary:#147a3a;--primary-text:#ffffff;--primary-hover:#0f5c2c;--accent:#147a3a;--accent-soft:#e0f2e5;
  --radius:16px;--shadow:0 1px 2px rgba(16,24,20,.06);
  color-scheme:light dark;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#121212;--surface:#1c1c1c;--surface-2:#242424;--text:#f4f5f4;--muted:#a7aaa7;
  --border:#ffffff22;--primary:#1ed760;--primary-text:#072510;--primary-hover:#4ae07c;--accent:#1ed760;--accent-soft:#163322;}
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",system-ui,sans-serif;overflow-x:hidden;padding-bottom:calc(76px + env(safe-area-inset-bottom))}
@media (min-width:760px){body{padding-bottom:0}}
a{color:var(--accent);text-underline-offset:3px}
img,svg{max-width:100%}
.wrap{max-width:960px;margin:0 auto;padding:0 max(16px,env(safe-area-inset-left)) 0 max(16px,env(safe-area-inset-right))}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:var(--surface);padding:8px;z-index:9}
.topbar{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border);padding-top:env(safe-area-inset-top)}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:56px}
.mark{display:inline-flex;white-space:nowrap;flex:none;align-items:center;gap:8px;font-weight:700;color:var(--text);text-decoration:none;min-height:44px}
.mark svg{flex:none}
.nav{display:flex;gap:2px;flex-wrap:nowrap;min-width:0}
.nav a{white-space:nowrap;color:var(--muted);text-decoration:none;font-size:14px;padding:10px 8px;min-height:44px;display:inline-flex;align-items:center;border-radius:10px}
.nav a:hover,.nav a[aria-current]{color:var(--text);background:var(--surface-2)}
.nav .hide-sm{display:none}
@media (min-width:640px){.nav .hide-sm{display:inline-flex}.nav a{font-size:15px;padding:10px}}
main{padding:20px 0 40px}
h1{font-size:28px;line-height:1.3;margin:8px 0 12px;letter-spacing:-.01em}
h2{font-size:22px;line-height:1.35;margin:36px 0 14px}
h3{font-size:18px;line-height:1.4;margin:0 0 6px}
@media (min-width:760px){h1{font-size:38px}h2{font-size:26px}}
p{margin:0 0 14px}
.lead{color:var(--muted);font-size:17px}
.eyebrow{display:inline-block;font-size:14px;color:var(--accent);background:var(--accent-soft);border-radius:999px;padding:4px 12px}
.hero{background:var(--surface);border:1px solid var(--border);border-radius:calc(var(--radius) + 4px);padding:24px 18px;box-shadow:var(--shadow)}
@media (min-width:760px){.hero{padding:40px}}
.cta-row{display:flex;flex-direction:column;gap:10px;margin-top:18px}
@media (min-width:600px){.cta-row{flex-direction:row;align-items:center;flex-wrap:wrap}}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:12px 22px;border-radius:12px;font-weight:600;font-size:16px;text-decoration:none;border:1px solid transparent;cursor:pointer;font-family:inherit}
.btn-primary{background:var(--primary);color:var(--primary-text)}
.btn-primary:hover{background:var(--primary-hover)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--border)}
.btn-ghost:hover{background:var(--surface-2)}
.btn:focus-visible,a:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.note{font-size:15px;color:var(--muted);margin:10px 0 0}
.code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:700;color:var(--text);background:var(--surface-2);border-radius:6px;padding:1px 6px}
.grid{display:grid;grid-template-columns:1fr;gap:12px}
@media (min-width:640px){.grid{grid-template-columns:1fr 1fr}}
@media (min-width:900px){.grid.three{grid-template-columns:repeat(3,1fr)}}
.card{display:block;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;color:var(--text);text-decoration:none;box-shadow:var(--shadow);min-width:0}
a.card:hover{border-color:var(--accent)}
.card p{color:var(--muted);margin:0;font-size:15px}
.card .tag{font-size:13px;color:var(--accent);margin-bottom:6px;display:block}
.card .more{display:inline-block;margin-top:10px;font-size:15px;color:var(--accent)}
.offers{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.offers a{display:flex;justify-content:space-between;align-items:center;gap:12px;min-height:52px;padding:12px 16px;color:var(--text);text-decoration:none;border-top:1px solid var(--border)}
.offers a:first-child{border-top:0}
.offers a:hover{background:var(--surface-2)}
.offers .price{font-weight:700;white-space:nowrap}
.offers .name{min-width:0}
.small{font-size:14px;color:var(--muted)}
.faq-list details{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:0 16px;margin-bottom:10px}
.faq-list summary{cursor:pointer;font-weight:600;min-height:52px;display:flex;align-items:center;padding:12px 0;list-style:none}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";margin-left:auto;padding-left:12px;color:var(--muted);font-size:20px}
.faq-list details[open] summary::after{content:"−"}
.faq-list details>div{padding:0 0 14px;color:var(--muted)}
.article{background:var(--surface);border:1px solid var(--border);border-radius:calc(var(--radius) + 4px);padding:22px 18px}
@media (min-width:760px){.article{padding:36px 40px}}
.article h2{font-size:21px;margin-top:30px}
.article ol,.article ul{padding-left:22px;margin:0 0 14px}
.article li{margin-bottom:8px}
.steps{counter-reset:s;list-style:none;padding:0!important}
.steps li{counter-increment:s;position:relative;padding-left:44px;margin-bottom:16px}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;background:var(--accent-soft);color:var(--accent);font-weight:700;display:flex;align-items:center;justify-content:center;font-size:15px}
.callout{background:var(--accent-soft);border-radius:12px;padding:14px 16px;margin:16px 0}
.callout p:last-child{margin:0}
.warn{background:var(--surface-2);border-left:4px solid var(--accent)}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 14px;border:1px solid var(--border);border-radius:12px}
table{border-collapse:collapse;width:100%;font-size:15px;min-width:0}
th,td{text-align:left;padding:10px 8px;border-top:1px solid var(--border);vertical-align:top}
thead th{border-top:0;background:var(--surface-2)}
.crumbs{font-size:14px;color:var(--muted);margin:0 0 10px}
.crumbs a{color:var(--muted)}
.end-cta{margin-top:28px;padding:20px;border-radius:var(--radius);background:var(--surface-2)}
.related{margin-top:28px}
.footer{border-top:1px solid var(--border);padding:24px 0 28px;color:var(--muted);font-size:14px}
.footer a{color:var(--muted)}
.footer p{margin:0 0 8px}
.sticky-cta{position:fixed;left:0;right:0;bottom:0;z-index:6;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-top:1px solid var(--border);padding:10px max(16px,env(safe-area-inset-right)) calc(10px + env(safe-area-inset-bottom)) max(16px,env(safe-area-inset-left))}
.sticky-cta .btn{width:100%}
@media (min-width:760px){.sticky-cta{display:none}}
.toast{position:fixed;left:50%;bottom:calc(90px + env(safe-area-inset-bottom));transform:translateX(-50%);background:var(--primary);color:var(--primary-text);padding:8px 14px;border-radius:10px;font-size:14px;opacity:0;transition:opacity .2s;pointer-events:none;z-index:9}
.toast.show{opacity:1}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
tbody td:first-child,thead th:first-child{white-space:nowrap;font-weight:600}