:root{--navy:#1B3A5C;--navy2:#2A5580;--light:#D5E8F0;--grey:#F2F4F7;--line:#E5E8EC;--txt:#1d2530;--sub:#7a8694;--gold:#C8A04B;--red:#c0392b;--green:#3f7a35;--wa:#25D366;}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
body{margin:0;font-family:-apple-system,"PingFang SC","Microsoft YaHei",Arial,sans-serif;background:#e9edf2;color:var(--txt);}
a{color:inherit;text-decoration:none;}
.app{max-width:480px;margin:0 auto;background:var(--grey);min-height:100vh;position:relative;box-shadow:0 0 30px rgba(20,40,70,.07);padding-bottom:150px;}
.topbar{background:var(--navy);color:#fff;height:48px;display:flex;align-items:center;justify-content:space-between;padding:0 14px;position:sticky;top:0;z-index:20;}
.topbar .bt{font-size:16px;font-weight:600;display:flex;align-items:center;gap:4px;}
.back{font-size:22px;color:#fff;}
.lang a{color:#fff;font-size:12px;opacity:.6;padding:3px 5px;}
.lang a.on{opacity:1;font-weight:700;text-decoration:underline;}

/* intro / hero */
.hero{background:linear-gradient(135deg,var(--navy),var(--navy2));color:#fff;padding:22px 18px;}
.hero h2{margin:0 0 6px;font-size:20px;}.hero h2 b{color:#ffd98a;}
.hero p{margin:0;font-size:13px;opacity:.88;line-height:1.55;}
.startbtn{margin:18px 14px 0;}
.startbtn button{width:100%;border:none;border-radius:12px;background:var(--navy);color:#fff;font-size:16px;font-weight:600;padding:15px;cursor:pointer;}
.introsteps{padding:14px;display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.introsteps .it{background:#fff;border-radius:10px;padding:11px 12px;font-size:12px;color:var(--sub);box-shadow:0 2px 8px rgba(20,40,70,.05);}
.introsteps .it b{display:block;color:var(--navy);font-size:13px;margin-bottom:2px;}

/* progress */
.prog{padding:12px 14px 2px;}
.prog .bar{display:flex;gap:5px;}
.prog .bar span{flex:1;height:5px;border-radius:3px;background:var(--line);}
.prog .bar span.on{background:var(--navy);}
.prog .lbl{display:flex;justify-content:space-between;align-items:baseline;margin-top:10px;}
.prog .lbl b{font-size:18px;}
.prog .lbl em{font-size:12px;color:var(--sub);font-style:normal;}
.steptip{font-size:12px;color:var(--sub);padding:2px 14px 0;}

/* option grids */
.opts{display:grid;grid-template-columns:1fr 1fr;gap:11px;padding:14px;}
.opts.chip{grid-template-columns:1fr 1fr 1fr;}
.opt{background:#fff;border:2px solid transparent;border-radius:12px;box-shadow:0 2px 8px rgba(20,40,70,.05);cursor:pointer;overflow:hidden;}
.opt.on{border-color:var(--navy);box-shadow:0 2px 12px rgba(27,58,92,.18);}
.opt .pic{aspect-ratio:1/1;background:#fbfcfd;display:flex;align-items:center;justify-content:center;padding:10px;border-bottom:1px solid var(--line);}
.opt .pic svg{width:100%;height:100%;color:var(--navy);}
.opt .pic img{width:100%;height:100%;object-fit:contain;}
.opt .lb{padding:8px 6px 9px;text-align:center;}
.opt .lb .nm{font-size:13px;font-weight:600;}
.opt .lb .cd{font-size:10px;color:var(--sub);margin-top:1px;}
.opt.on .lb .cd{color:var(--navy);}
/* chip style */
.opt.chiponly{border:1px solid var(--line);box-shadow:none;}
.opt.chiponly.on{border:2px solid var(--navy);background:var(--navy);}
.opt.chiponly .lb{padding:14px 6px;}
.opt.chiponly.on .lb .nm{color:#fff;}
.opt.chiponly .lb .cd{display:none;}
/* color swatches */
.opts.color{grid-template-columns:1fr 1fr 1fr 1fr;gap:10px;padding:14px;}
.sw{cursor:pointer;text-align:center;}
.sw .dot{width:100%;aspect-ratio:1/1;border-radius:50%;border:2px solid transparent;}
.sw.on .dot{border-color:var(--navy);box-shadow:0 0 0 3px rgba(27,58,92,.15);}
.sw .nm{font-size:11px;margin-top:5px;color:var(--txt);}

/* live spec footer */
.specbar{position:fixed;bottom:64px;left:0;right:0;max-width:480px;margin:0 auto;background:#fff;border-top:1px solid var(--line);padding:9px 12px;z-index:24;}
.specbar .t{font-size:11px;color:var(--sub);margin-bottom:6px;}
.specbar .pills{display:flex;flex-wrap:wrap;gap:5px;max-height:46px;overflow:hidden;}
.specbar .pills span{font-size:11px;background:var(--navy);color:#fff;padding:3px 9px;border-radius:12px;}
.specbar .pills span.todo{background:#fff;border:1px dashed var(--line);color:var(--sub);}

/* nav bar */
.navbar{position:fixed;bottom:0;left:0;right:0;max-width:480px;margin:0 auto;background:#fff;border-top:1px solid var(--line);display:flex;gap:9px;padding:10px 12px;z-index:30;}
.navbar button{border-radius:10px;font-size:15px;font-weight:600;padding:12px;cursor:pointer;border:1px solid var(--line);}
.navbar .prev{flex:0 0 92px;background:#fff;color:var(--sub);}
.navbar .next{flex:1;background:var(--navy);color:#fff;border:none;}
.navbar .next:disabled{opacity:.4;}

/* review */
.review{padding:14px;}
.rv-card{background:#fff;border-radius:12px;box-shadow:0 2px 8px rgba(20,40,70,.05);overflow:hidden;margin-bottom:14px;}
.rv-h{background:var(--navy);color:#fff;padding:11px 14px;font-size:14px;font-weight:600;}
.rv-row{display:flex;justify-content:space-between;font-size:13px;padding:9px 14px;border-bottom:1px solid var(--line);}
.rv-row:last-child{border-bottom:none;}
.rv-row .k{color:var(--sub);}
.rv-row .v{font-weight:600;text-align:right;}
.rv-row .edit{color:var(--navy);font-size:11px;margin-left:8px;font-weight:400;}
.fitem{background:#fff;border-radius:10px;padding:12px;margin-bottom:10px;box-shadow:0 2px 8px rgba(20,40,70,.05);}
.fitem .fl{font-size:13px;font-weight:600;margin-bottom:8px;}.fitem .fl i{color:var(--red);font-style:normal;}
.fitem input,.fitem textarea{width:100%;border:1px solid var(--line);border-radius:8px;padding:9px;font-size:13px;font-family:inherit;background:#fbfcfd;color:var(--txt);}
.chips{display:flex;gap:7px;flex-wrap:wrap;}
.chips label{border:1px solid var(--line);border-radius:16px;padding:6px 12px;font-size:12px;background:#fbfcfd;cursor:pointer;}
.chips label.on{background:var(--navy);color:#fff;border-color:var(--navy);}
.send button{width:100%;border:none;border-radius:10px;color:#fff;font-size:15px;font-weight:600;padding:13px;margin-top:10px;cursor:pointer;}
.send .wa{background:var(--wa);}.send .em{background:var(--navy);}.send .cp{background:#fff;color:var(--navy);border:1px solid var(--line)!important;}
.sendnote{font-size:11px;color:var(--sub);text-align:center;margin-top:12px;line-height:1.6;}

.toast{position:fixed;left:50%;bottom:140px;transform:translateX(-50%);background:rgba(20,30,45,.92);color:#fff;font-size:13px;padding:10px 18px;border-radius:22px;z-index:60;opacity:0;transition:opacity .25s;pointer-events:none;max-width:80%;text-align:center;}
.toast.show{opacity:1;}