/* Simple three-step demo */
.sd{margin-top:8px}
.sd-tabs{display:flex;gap:8px;border-bottom:1px solid #e6dfcc;margin-bottom:28px}
.sd-tabs button{appearance:none;background:none;border:0;border-bottom:2px solid transparent;margin-bottom:-1px;padding:12px 18px 14px;font:500 1rem/1 var(--body);color:var(--muted);display:inline-flex;align-items:center;gap:10px;cursor:pointer;min-height:48px}
.sd-tabs button span{width:26px;height:26px;border-radius:50%;border:1px solid #cfc6b3;display:inline-grid;place-items:center;font-size:.8rem;font-weight:600;color:var(--muted)}
.sd-tabs button[aria-selected=true]{color:var(--ink);border-bottom-color:var(--ink)}
.sd-tabs button[aria-selected=true] span{background:var(--ink);border-color:var(--ink);color:#fff}
.sd-tabs button.is-done span{background:var(--gold);border-color:var(--gold);color:#fff}
.sd-body{display:grid;grid-template-columns:minmax(0,440px) minmax(0,1fr);gap:56px;align-items:start}
.sd-phone{position:relative;background:#fff;border:1px solid #e4ded0;border-radius:22px;padding:14px 18px 20px;box-shadow:0 30px 60px -24px rgba(38,39,33,.28),0 12px 28px -14px rgba(38,39,33,.14);min-height:560px;overflow:hidden}
.sd-status{display:flex;justify-content:space-between;font-size:.7rem;color:var(--muted);padding:0 2px 14px;border-bottom:1px solid #eee9dc;margin-bottom:16px}
.sd-eyebrow{font-size:.6875rem;font-weight:600;letter-spacing:.13em;color:var(--gold);margin:0 0 8px}
.sd-screen h3{font-family:var(--display);font-size:1.7rem;line-height:1.15;letter-spacing:-.02em;margin:0 0 16px;text-transform:none}
.sd-screen-head{display:flex;justify-content:space-between;align-items:baseline}
.sd-screen-head span{font-size:.75rem;color:var(--muted)}
.sd-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:18px}
.sd-stats div{border:1px solid #ebe6d8;border-radius:10px;padding:10px 12px;display:flex;flex-direction:column;gap:4px}
.sd-stats span{font-size:.7rem;color:var(--muted)}
.sd-stats strong{font-family:var(--display);font-size:1.35rem;font-weight:500;line-height:1}
.sd-label{font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:14px 0 6px}
.sd-rows{list-style:none;margin:0;padding:0}
.sd-rows li{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px solid #f0ece1;font-size:.9rem}
.sd-rows li:last-child{border-bottom:0}
.sd-rows em{font-style:normal;color:var(--muted);font-size:.8rem}
.sd-alert{border:1px solid #d8cfae;background:#fbf8ef;border-radius:12px;padding:14px;display:flex;flex-direction:column;gap:12px}
.sd-alert strong{display:block;font-size:.95rem}
.sd-alert span{font-size:.8rem;color:var(--muted)}
.sd-btn{appearance:none;border:1px solid #cfc6b3;background:#fff;color:var(--ink);border-radius:8px;padding:11px 16px;font:600 .875rem/1 var(--body);cursor:pointer;min-height:42px;transition:background .15s,transform .15s}
.sd-btn:hover{background:#f6f3ea}
.sd-btn-primary{background:var(--ink);border-color:var(--ink);color:#fff}
.sd-btn-primary:hover{background:var(--gold);border-color:var(--gold)}
.sd-btn-approve{background:#eaf2e6;border-color:#a9c39c;color:#2f5a2a}
.sd-btn-approve:hover{background:#dcebd6}
.sd-btn-reject{background:#f6e9e6;border-color:#d7ada4;color:#7a2f24}
.sd-btn-reject:hover{background:#efdad5}
.sd-card{border:1px solid #e4ded0;border-radius:14px;overflow:hidden;background:#fff;box-shadow:0 10px 24px -14px rgba(38,39,33,.25);transition:transform .4s ease,opacity .4s ease}
.sd-card img{width:100%;height:auto;aspect-ratio:4/5;object-fit:cover;display:block}
.sd-card-copy{padding:12px 14px 14px;display:flex;flex-direction:column;gap:6px}
.sd-card-copy span{font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.sd-card-copy strong{font-size:1rem;line-height:1.3}
.sd-card-copy p{margin:0;font-size:.85rem;line-height:1.5;color:var(--muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.sd-out-right{transform:translateX(120%) rotate(6deg);opacity:0}
.sd-out-left{transform:translateX(-120%) rotate(-6deg);opacity:0}
.sd-out-down{transform:translateY(40px);opacity:0}
.sd-actions{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
.sd-actions .sd-btn{flex:1 1 auto}
.sd-next{width:100%;margin-top:10px}
.sd-empty{border:1px dashed #cfc6b3;border-radius:12px;padding:22px 16px;text-align:center;display:flex;flex-direction:column;gap:8px;align-items:center}
.sd-empty strong{font-family:var(--display);font-size:1.3rem;font-weight:500}
.sd-empty span{font-size:.85rem;color:var(--muted)}
.sd-queue{list-style:none;margin:0 0 14px;padding:0;display:flex;flex-direction:column;gap:10px}
.sd-queue li{display:grid;grid-template-columns:56px 1fr auto;gap:12px;align-items:center;border:1px solid #e4ded0;border-radius:12px;padding:10px}
.sd-queue img{width:56px;height:70px;object-fit:cover;border-radius:8px}
.sd-queue strong{display:block;font-size:.9rem;line-height:1.3}
.sd-queue span{font-size:.72rem;color:var(--muted)}
.sd-badge{font:700 .62rem/1 var(--body);letter-spacing:.1em;border-radius:999px;padding:6px 9px;background:#f1ecdd;color:#6b5a2e;border:1px solid #d8cfae}
.sd-badge.is-live{background:#e3f0df;color:#2f5a2a;border-color:#a9c39c}
.sd-note-inline{font-size:.8rem;color:var(--muted);margin:4px 0 0}
.sd-toast{position:absolute;left:50%;bottom:16px;transform:translate(-50%,20px);background:var(--ink);color:#fff;font-size:.8rem;padding:10px 14px;border-radius:999px;opacity:0;pointer-events:none;transition:opacity .25s,transform .25s;white-space:nowrap;max-width:calc(100% - 32px);text-overflow:ellipsis;overflow:hidden;margin:0}
.sd-toast.is-on{opacity:1;transform:translate(-50%,0)}
.sd-explain{padding-top:18px;max-width:460px}
.sd-step-num{font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;color:var(--gold);font-weight:600}
.sd-explain h3{font-family:var(--display);font-size:2rem;font-weight:500;line-height:1.1;letter-spacing:-.02em;margin:10px 0 14px}
.sd-explain p{font-size:1.0625rem;line-height:1.7;color:var(--muted);margin:0 0 18px}
.sd-hint{font-size:.85rem!important;color:var(--gold)!important}
.sd-explain .sd-btn{padding:14px 20px;font-size:.95rem}
.sd-note{margin:26px 0 0;font-size:.8rem;color:var(--muted)}
.sd-screen[hidden],.sd-explain [hidden],.sd [hidden]{display:none!important}
@media(max-width:900px){.sd-body{grid-template-columns:1fr;gap:20px}.sd-explain{order:-1;max-width:none;padding-top:0}.sd-explain .sd-btn{display:none}.sd-phone{max-width:460px;margin:0 auto;min-height:0}}
@media(max-width:760px){.sd-tabs{gap:0;overflow-x:auto;scrollbar-width:none}.sd-tabs button{padding:10px 12px 12px;font-size:.9rem;white-space:nowrap}.sd-explain h3{font-size:1.6rem}.sd-explain p{font-size:1rem}.sd-phone{padding:12px 14px 18px}.sd-screen h3{font-size:1.5rem}}

/* centered, guided */
.walkthrough-intro{text-align:center;margin:0 auto 36px;max-width:760px}
.walkthrough-intro .eyebrow{max-width:none}
.walkthrough-intro>p:not(.eyebrow){margin-inline:auto;max-width:58ch}
.sd-tabs{justify-content:center;border-bottom:0;gap:0;margin-bottom:32px;position:relative}
.sd-tabs::before{content:"";position:absolute;left:18%;right:18%;top:24px;height:1px;background:#e6dfcc;z-index:0}
.sd-tabs button{position:relative;z-index:1;flex-direction:column;gap:10px;padding:8px 26px 0;border-bottom:0;margin:0;font-size:.95rem;background:#fff}
.sd-tabs button span{width:34px;height:34px;font-size:.9rem}
.sd-tabs button[aria-selected=true]{border-bottom:0}
.sd-tabs button[aria-selected=true] span{box-shadow:0 0 0 5px #f1ecdd}
.sd-body{max-width:1040px;margin:0 auto;grid-template-columns:minmax(0,440px) minmax(0,1fr);gap:48px;align-items:center}
.sd-explain{padding-top:0}
.sd-nav{display:flex;justify-content:center;gap:12px;margin-top:28px}
.sd-nav .sd-btn{min-width:200px;padding:14px 22px;font-size:.95rem}
.sd-note{text-align:center}
@media(max-width:900px){.sd-body{gap:18px}.sd-explain{text-align:center;margin:0 auto}.sd-explain p{margin-inline:auto}}
@media(max-width:760px){.sd-tabs{overflow:visible;margin-bottom:22px}.sd-tabs::before{left:14%;right:14%;top:20px}.sd-tabs button{padding:6px 10px 0;font-size:.8rem;gap:8px;white-space:normal;text-align:center;flex:1 1 0}.sd-tabs button span{width:30px;height:30px}.sd-nav{flex-direction:column;align-items:stretch}.sd-nav .sd-btn{min-width:0}}
@media(max-width:900px){.sd-body{grid-template-columns:1fr;max-width:460px}.sd-phone{width:100%;max-width:none}}

/* stacked layout: stepper, step text, phone, nav */
.sd-body{display:block;max-width:none}
.sd-explain{max-width:640px;margin:0 auto 26px;text-align:center}
.sd-explain h3{margin:8px 0 12px}
.sd-explain p{margin:0 auto}
.sd-phone{max-width:460px;margin:0 auto;min-height:0}
@media(max-width:900px){.sd-body{grid-template-columns:1fr;max-width:none}.sd-phone{width:100%;max-width:460px}}