.guide-main{--guide-paper:#faf6f2;--guide-stroke:#e5d7ce;--guide-muted:#655f59}
.guide-main .page-hero{padding:46px 20px}.guide-main .page-hero h1{font-size:clamp(23px,3.2vw,34px);letter-spacing:.06em}.guide-main .page-hero p{font-size:14px;margin:16px 0 0}
.guide-container{max-width:980px;margin:auto;padding:0 24px}.guide-intro{padding:34px 0 44px}.guide-intro p{margin:0 0 18px;line-height:1.9}
.guide-lead{font-size:16px}.guide-note{border-left:3px solid var(--accent);background:var(--guide-paper);padding:16px 20px;font-size:14px;border-radius:0 8px 8px 0}.guide-note strong{color:var(--accent-dark)}
.guide-nav{display:flex;gap:10px;flex-wrap:wrap;margin:24px 0 0}.guide-nav a{padding:9px 16px;border:1px solid var(--guide-stroke);border-radius:6px;font-size:13px;background:#fff}.guide-main a:focus-visible,.guide-main summary:focus-visible{outline:3px solid var(--accent-dark);outline-offset:4px}.guide-main .text-link{text-decoration:underline;text-underline-offset:4px;color:var(--accent-dark)}
.guide-section{padding:44px 0;border-top:1px solid var(--line)}.guide-section h2{font-size:24px;margin:0 0 16px}.guide-section p{font-size:14px}.guide-kicker{display:block;color:var(--accent-dark);font-family:Arial,sans-serif;font-size:11px;letter-spacing:.15em;margin-bottom:8px}
.guide-step-heading{display:flex;gap:12px;align-items:center;margin-bottom:14px}.guide-step-heading h3{font-size:19px}.step-number{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--accent-dark);color:#fff;font-family:Arial,sans-serif;font-size:13px;flex-shrink:0}
.mail-example{margin:22px 0 30px;padding:22px 24px;border:1px solid var(--guide-stroke);border-radius:10px;background:var(--guide-paper)}.mail-example .example-label{font-size:11px;letter-spacing:.08em;color:var(--guide-muted);margin:0 0 10px}.mail-example dl{display:grid;grid-template-columns:80px 1fr;gap:9px 16px;margin:0;font-size:14px}.mail-example dt{font-weight:600}.mail-example dd{margin:0}
.guide-screen-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}.guide-screen-grid article{min-width:0}.guide-screen-grid p{margin:8px 0 20px}.screen-figure{margin:0 auto;max-width:250px}.screen-figure img{width:100%;height:auto;border:1px solid var(--guide-stroke);border-radius:12px;box-shadow:0 8px 24px #5037290d}.screen-figure a{display:block}.screen-figure figcaption{font-size:11px;color:var(--guide-muted);margin-top:9px;text-align:center;line-height:1.7}.sample-note{font-size:12px!important;color:var(--guide-muted);margin-top:24px}
.guide-devices{display:flex;flex-direction:column;gap:14px;margin-top:26px}.guide-device{border:1px solid var(--guide-stroke);border-radius:10px;scroll-margin-top:20px;overflow:hidden}.guide-device summary{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;cursor:pointer;background:var(--guide-paper);list-style:none}.guide-device summary::-webkit-details-marker{display:none}.guide-device summary::after{content:'＋';font-family:Arial,sans-serif;font-size:21px}.guide-device[open] summary::after{content:'−'}.guide-device summary h3{font-size:19px}.device-content{padding:20px 24px 24px}.device-content ol{padding-left:23px;margin:0}.device-content li{font-size:14px;margin:12px 0;line-height:1.9}.device-content li strong{font-weight:600;color:var(--ink)}.device-content .guide-note{margin:22px 0 0}.device-content .official-link{font-size:12px;color:var(--guide-muted);margin:18px 0 0}
.file-flow{display:grid;grid-template-columns:1fr 20px 1fr 20px 1fr;align-items:center;gap:12px;padding:22px 16px;margin:22px 0;border-radius:8px;background:var(--guide-paper);text-align:center}.file-flow>div{min-width:0}.file-flow svg{display:block;margin:0 auto 9px;width:36px;height:40px;color:var(--accent-dark)}.file-flow span{font-size:12px;display:block;line-height:1.6}.flow-arrow{font-size:20px;color:var(--accent-dark)}.diagram-label{font-size:11px!important;color:var(--guide-muted);margin-top:-12px;text-align:center}
.guide-trouble details{border-bottom:1px solid var(--line);padding:18px 0}.guide-trouble summary{font-size:15px;font-weight:600;cursor:pointer;line-height:1.8}.guide-trouble details p{padding-left:0;line-height:1.9;margin:14px 0 0}.guide-contact{text-align:center;background:var(--guide-paper);border-radius:12px;padding:28px 24px;margin-top:30px}.guide-contact h3{font-size:20px}.guide-contact p{margin:12px 0 20px}.guide-contact .btn{display:inline-block}.guide-back{font-size:13px;margin-top:24px!important}
@media(max-width:600px){.guide-container{padding:0 20px}.guide-main .page-hero{padding:32px 18px}.guide-main .page-hero p{font-size:12px}.guide-section{padding:32px 0}.guide-section h2{font-size:21px}.guide-screen-grid{grid-template-columns:1fr;gap:32px}.screen-figure{max-width:250px}.guide-step-heading h3{font-size:18px}.guide-nav{gap:8px}.guide-nav a{padding:9px 13px;font-size:12px}.guide-device summary{padding:17px 18px}.device-content{padding:15px 18px 20px}.file-flow{gap:6px;padding:18px 8px}.file-flow span{font-size:11px}.mail-example{padding:18px}.mail-example dl{grid-template-columns:68px 1fr;gap:8px;font-size:12px}.guide-note{padding:14px 16px}.guide-contact{padding:25px 18px}}