:root{
  --brand:#0b5563; --brand-d:#083d47; --brand-2:#127d8c; --gold:#c8a25a;
  --ink:#1f2a2e; --muted:#66767b; --line:#e4e0d6; --bg:#f4f2ec; --white:#fff;
  --danger:#c0473b; --ok:#2e7d5b; --radius:14px; --shadow:0 10px 34px rgba(10,40,46,.08);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink); background:var(--bg); line-height:1.6; -webkit-font-smoothing:antialiased;
}
.wrap{max-width:820px;margin:0 auto;padding:0 16px 90px}

/* 顶栏 */
.topbar{background:linear-gradient(135deg,var(--brand-d),var(--brand));color:#fff;padding:20px 0 26px}
.topbar .inner{max-width:820px;margin:0 auto;padding:0 16px}
.brand{display:flex;align-items:center;gap:12px}
.logo{width:42px;height:42px;border-radius:12px;background:rgba(255,255,255,.14);display:grid;place-items:center;
  font-weight:800;font-size:20px;letter-spacing:.5px;border:1px solid rgba(255,255,255,.25)}
.brand b{font-size:18px;letter-spacing:.4px}
.brand span{display:block;font-size:12px;opacity:.82;font-weight:400}
.topbar h1{font-size:21px;margin:18px 0 6px;font-weight:700}
.topbar p{margin:0;font-size:13.5px;opacity:.88}

/* 进度 */
.progress-card{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);
  margin:-16px auto 18px;padding:16px 18px;position:relative}
.psteps{display:flex;justify-content:space-between;position:relative;margin:6px 0 0}
.psteps::before{content:"";position:absolute;top:13px;left:13px;right:13px;height:3px;background:var(--line);z-index:0}
.psteps .bar{position:absolute;top:13px;left:13px;height:3px;background:var(--brand-2);z-index:1;transition:width .35s}
.pstep{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;gap:6px;
  font-size:11px;color:var(--muted);width:44px;text-align:center}
.pstep .dot{width:28px;height:28px;border-radius:50%;background:var(--white);border:2px solid var(--line);
  display:grid;place-items:center;font-size:12px;font-weight:700;color:var(--muted)}
.pstep.active .dot{border-color:var(--brand);color:var(--brand)}
.pstep.done .dot{background:var(--brand);border-color:var(--brand);color:#fff}
.pstep.active{color:var(--brand);font-weight:600}
@media(max-width:560px){.pstep span.lbl{display:none}}

/* 卡片/区块 */
.card{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px 20px;margin-bottom:16px}
.step-head h2{margin:0 0 4px;font-size:19px}
.step-head p{margin:0 0 14px;font-size:13px;color:var(--muted)}
.section-title{font-size:13px;font-weight:700;color:var(--brand);margin:20px 0 10px;
  display:flex;align-items:center;gap:8px}
.section-title::before{content:"";width:4px;height:14px;background:var(--gold);border-radius:2px}
.section-title:first-child{margin-top:4px}

/* 字段 */
.field{margin-bottom:16px}
.field label.q{display:block;font-size:14.5px;font-weight:600;margin-bottom:7px}
.req{color:var(--danger);margin-left:3px}
.help{font-size:12px;color:var(--muted);font-weight:400;margin-left:6px}
input[type=text],input[type=number],input[type=tel],input[type=email],select,textarea{
  width:100%;padding:11px 13px;border:1.5px solid var(--line);border-radius:10px;font-size:14.5px;
  font-family:inherit;background:#fdfcf9;color:var(--ink);transition:border .15s,box-shadow .15s;outline:none}
textarea{min-height:78px;resize:vertical;line-height:1.6}
input:focus,select:focus,textarea:focus{border-color:var(--brand-2);background:#fff;
  box-shadow:0 0 0 3px rgba(18,125,140,.12)}
input.invalid,textarea.invalid,select.invalid{border-color:var(--danger);background:#fdf6f5}
.err-msg{color:var(--danger);font-size:12px;margin-top:5px;display:none}
.err-msg.show{display:block}
select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2366767b' stroke-width='1.6' fill='none'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:36px}

/* 单选/多选 chips */
.opts{display:flex;flex-wrap:wrap;gap:9px}
.opt{position:relative}
.opt input{position:absolute;opacity:0;inset:0;cursor:pointer}
.opt span{display:inline-block;padding:9px 15px;border:1.5px solid var(--line);border-radius:999px;
  font-size:13.5px;background:#fdfcf9;cursor:pointer;transition:all .15s;user-select:none}
.opt input:checked + span{background:rgba(18,125,140,.1);border-color:var(--brand-2);color:var(--brand-d);font-weight:600}
.opt input:focus-visible + span{box-shadow:0 0 0 3px rgba(18,125,140,.18)}
.opt:hover span{border-color:#c9c4b6}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:520px){.grid2{grid-template-columns:1fr}}

/* 按钮 */
.nav{position:fixed;left:0;right:0;bottom:0;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-top:1px solid var(--line);padding:12px 16px;z-index:20}
.nav .inner{max-width:820px;margin:0 auto;display:flex;gap:12px;justify-content:space-between;align-items:center}
.btn{border:none;border-radius:11px;padding:13px 26px;font-size:15px;font-weight:600;cursor:pointer;
  font-family:inherit;transition:transform .08s,box-shadow .15s,background .15s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 8px 20px rgba(11,85,99,.28)}
.btn-ghost{background:#f0ede5;color:var(--ink)}
.btn-gold{background:linear-gradient(135deg,#d8b46a,var(--gold));color:#3a2c10;box-shadow:0 8px 20px rgba(200,162,90,.3)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-block{width:100%}
.savehint{font-size:12px;color:var(--muted)}

/* 欢迎页 / 成功页 */
.hero{text-align:center;padding:10px 0 4px}
.hero .big{width:74px;height:74px;border-radius:20px;margin:0 auto 16px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-size:34px;font-weight:800;
  box-shadow:0 14px 30px rgba(11,85,99,.3)}
.hero h2{font-size:23px;margin:0 0 8px}
.hero p{color:var(--muted);font-size:14px;max-width:560px;margin:0 auto 8px}
.featgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:20px 0;text-align:left}
.feat{background:#fdfcf9;border:1px solid var(--line);border-radius:12px;padding:14px}
.feat b{display:block;font-size:14px;margin-bottom:3px}
.feat span{font-size:12.5px;color:var(--muted)}
@media(max-width:520px){.featgrid{grid-template-columns:1fr}}
.pill{display:inline-block;background:rgba(200,162,90,.16);color:#8a6c2c;font-size:12px;
  padding:4px 12px;border-radius:999px;margin:3px}
.check-anim{width:84px;height:84px;border-radius:50%;margin:0 auto 16px;display:grid;place-items:center;
  background:var(--ok);color:#fff;font-size:40px;box-shadow:0 14px 30px rgba(46,125,91,.3)}
.next-list{text-align:left;background:#f7f5ef;border-radius:12px;padding:16px 18px;margin:18px 0}
.next-list li{margin:7px 0;font-size:14px}
.code-box{font-family:"SFMono-Regular",Consolas,monospace;background:var(--brand-d);color:#9fe0e8;
  border-radius:10px;padding:12px 16px;font-size:15px;letter-spacing:1px;display:inline-block;margin:6px 0}

.spin{display:none;flex-direction:column;align-items:center;gap:14px;padding:40px 0}
.spin.show{display:flex}
.loader{width:42px;height:42px;border:4px solid var(--line);border-top-color:var(--brand-2);
  border-radius:50%;animation:rot 1s linear infinite}
@keyframes rot{to{transform:rotate(360deg)}}

/* 后台 */
.admin-login{max-width:400px;margin:40px auto}
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
table.tbl{border-collapse:collapse;width:100%;font-size:13px;min-width:680px}
.tbl th,.tbl td{padding:11px 13px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
.tbl th{background:#f3f0e8;font-weight:700}
.tbl tr:last-child td{border-bottom:none}
.tbl a{color:var(--brand-2);cursor:pointer;text-decoration:none;font-weight:600}
.tagst{font-size:11px;padding:2px 9px;border-radius:999px;background:rgba(46,125,91,.14);color:var(--ok)}
.admin-bar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:14px}
.detail-dl{display:grid;grid-template-columns:130px 1fr;gap:0;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.detail-dl dt,.detail-dl dd{padding:10px 14px;margin:0;border-bottom:1px solid var(--line);font-size:13.5px}
.detail-dl dt{background:#f3f0e8;font-weight:600}
.detail-dl .full{grid-column:1/3;background:#eef6f7;font-weight:700;color:var(--brand-d)}
.muted{color:var(--muted)}
.toast{position:fixed;top:18px;left:50%;transform:translateX(-50%);background:var(--ink);color:#fff;
  padding:11px 20px;border-radius:10px;font-size:13.5px;opacity:0;transition:opacity .25s;z-index:50}
.toast.show{opacity:1}