:root {
  --bg:        #f0f4f8;
  --bg2:       #f7f9fc;
  --bg3:       #eef2f7;
  --panel:     #ffffff;
  --border:    rgba(59,100,160,0.10);
  --border2:   rgba(59,100,160,0.18);
  --blue:      #2563b8;
  --blue-dim:  rgba(37,99,184,0.09);
  --blue-glow: rgba(37,99,184,0.18);
  --cyan:      #0284a8;
  --cyan-dim:  rgba(2,132,168,0.10);
  --gold:      #c87a10;
  --gold-dim:  rgba(200,122,16,0.10);
  --text:      #1a2a3a;
  --text2:     #3d5470;
  --text3:     #7a96b0;
  --success:   #16a34a;
  --grid-line: rgba(59,100,160,0.05);
  --navy:      #1a2e4a;
}

* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans SC','Noto Sans CJK SC','Source Han Sans SC','Microsoft YaHei','PingFang SC',Arial,sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

body::before {
  content:''; position:fixed; inset:0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events:none; z-index:0;
}

nav {
  position: sticky; top:0; z-index:100;
  height: 54px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 40px;
  background: rgba(247,249,252,0.96);
  border-bottom: 1px solid var(--border2);
  backdrop-filter: blur(12px);
}
.nav-left { display:flex; align-items:center; gap:14px; min-width:0; }
.nav-logo-mark { display:none; }
.nav-brand { display:none; }
.nav-divider { width:1px; height:20px; background:var(--border2); flex-shrink:0; }
.nav-tag {
  font-family:Consolas,Monaco,monospace; font-size:10px; color:var(--cyan);
  background:var(--cyan-dim); border:1px solid rgba(2,132,168,0.25);
  padding:2px 8px; border-radius:3px; letter-spacing:1px; white-space:nowrap;
}
.nav-right { display:flex; align-items:center; gap:8px; flex-shrink:0; }
.btn-nav {
  height:30px; padding:0 16px; border-radius:4px;
  font-size:12px; font-weight:600; letter-spacing:1.5px;
  cursor:pointer; font-family:inherit; transition:all 0.2s;
}
.btn-nav-outline {
  background:transparent; color:var(--text2); border:1px solid var(--border2);
}
.btn-nav-outline:hover { border-color:var(--blue); color:var(--blue); }
.btn-nav-solid {
  background:var(--blue); color:#fff; border:none;
  box-shadow:0 2px 10px var(--blue-glow);
}
.btn-nav-solid:hover { background:#1d56a8; }

.hero {
  position:relative; z-index:1;
  min-height: calc(100vh - 54px - 36px);
  display:flex; flex-direction:column;
  align-items:center; justify-content:center;
  padding: 40px 48px 48px;
  overflow:hidden;
}
.hero::before {
  content:''; position:absolute; top:-80px; left:30%;
  width:420px; height:420px;
  background:radial-gradient(circle, rgba(37,99,184,0.07) 0%, transparent 65%);
  pointer-events:none;
}
.hero-brand { text-align:center; margin-bottom:36px; max-width:720px; }
.hero-badge-wrap { display:flex; justify-content:center; margin-bottom:16px; }
.hero-badge {
  display:inline-flex; align-items:center; gap:7px;
  background:rgba(200,122,16,0.10); border:1px solid rgba(200,122,16,0.28);
  color:#9a5e08; padding:5px 14px; border-radius:20px;
  font-size:11px; letter-spacing:1px;
}
.hero-badge span { width:5px; height:5px; background:var(--gold); border-radius:50%; animation:pulse 2s infinite; flex-shrink:0; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.35} }
.hero-subtitle { font-size:11px; color:var(--text3); margin-bottom:10px; letter-spacing:2px; }
.hero-title {
  font-family:'Noto Serif SC','Noto Serif CJK SC','Source Han Serif SC','Songti SC','SimSun',serif;
  font-size:34px; font-weight:900; color:var(--text); line-height:1.2; margin-bottom:12px; letter-spacing:-0.5px;
}
.hero-title em { font-style:normal; color:var(--gold); }
.hero-desc {
  font-size:13px; color:var(--text3); line-height:1.85;
  margin-bottom:24px; letter-spacing:0.3px; max-width:600px; margin-left:auto; margin-right:auto;
}
.hero-btns { display:flex; justify-content:center; gap:12px; flex-wrap:wrap; }
.btn-hero-primary {
  background:var(--blue); color:#fff; border:none;
  padding:12px 32px; border-radius:5px; font-size:13px; font-weight:700;
  cursor:pointer; font-family:inherit; letter-spacing:2px; transition:all 0.22s;
  box-shadow:0 3px 14px var(--blue-glow);
}
.btn-hero-primary:hover { background:#1d56a8; transform:translateY(-1px); }
.btn-hero-outline {
  background:transparent; color:var(--navy);
  border:1.5px solid rgba(26,46,74,0.25);
  padding:12px 32px; border-radius:5px; font-size:13px;
  cursor:pointer; font-family:inherit; letter-spacing:2px; transition:all 0.22s;
}
.btn-hero-outline:hover { border-color:var(--blue); color:var(--blue); background:var(--blue-dim); }

.hero-diagram {
  width:100%; display:flex; flex-direction:column; align-items:center;
}
.flow-section-label {
  font-family:Consolas,Monaco,monospace; font-size:9px; color:var(--text3);
  letter-spacing:3px; text-transform:uppercase; text-align:center;
  margin-bottom:24px; display:flex; align-items:center; gap:12px;
  width:100%; max-width:800px;
}
.flow-section-label::before,
.flow-section-label::after {
  content:''; flex:1; height:1px; background:var(--border2);
}
.flow-row { display:flex; align-items:center; justify-content:center; flex-wrap:wrap; gap:4px 0; }
.flow-node { display:flex; flex-direction:column; align-items:center; gap:8px; flex:0 0 auto; width:82px; }
.flow-node-box {
  width:60px; height:60px; background:var(--panel);
  border:1px solid var(--border2); border-radius:12px;
  display:flex; align-items:center; justify-content:center;
  position:relative; cursor:default; transition:all 0.25s;
  box-shadow:0 2px 8px rgba(37,99,184,0.07);
}
.flow-node-box:hover {
  border-color:var(--blue); background:var(--blue-dim);
  transform:translateY(-3px); box-shadow:0 6px 16px rgba(37,99,184,0.13);
}
.flow-node-box .ni { font-size:22px; line-height:1; }
.flow-node-badge {
  position:absolute; top:-8px; left:50%; transform:translateX(-50%);
  font-family:Consolas,Monaco,monospace; font-size:8px; font-weight:700;
  background:var(--blue); color:#fff; padding:2px 6px; border-radius:7px;
  letter-spacing:0.5px; white-space:nowrap;
}
.flow-node-label { font-size:11px; color:var(--text2); text-align:center; letter-spacing:0.2px; line-height:1.3; }
.flow-arrow { display:flex; align-items:center; flex-shrink:0; width:24px; }
.fa-line { flex:1; height:1px; background:linear-gradient(90deg, var(--border2), rgba(37,99,184,0.38)); }
.fa-head { width:0; height:0; border-top:3px solid transparent; border-bottom:3px solid transparent; border-left:5px solid rgba(37,99,184,0.48); }

footer {
  position:relative; z-index:10;
  background:rgba(247,249,252,0.92);
  min-height:36px;
  display:flex; align-items:center; justify-content:space-between;
  padding:8px 40px;
  border-top:1px solid var(--border2);
  backdrop-filter:blur(8px);
  flex-wrap:wrap; gap:8px;
}
footer p { color:var(--text3); font-size:11px; letter-spacing:0.5px; }
footer a { color:var(--text3); font-size:11px; text-decoration:none; letter-spacing:0.5px; }
footer a:hover { color:var(--text2); }
.footer-links { display:flex; gap:20px; flex-wrap:wrap; align-items:center; }
.footer-contact {
  display:inline-flex; align-items:center; gap:6px;
  color:var(--text2); font-size:11px; text-decoration:none; letter-spacing:0.3px;
  padding:4px 10px; border-radius:999px; border:1px solid var(--border2); background:var(--panel);
  transition:border-color 0.2s, color 0.2s;
}
.footer-contact:hover { color:var(--blue); border-color:rgba(37,99,184,0.35); }
.footer-contact svg { flex-shrink:0; opacity:0.75; }
.nav-contact { position:relative; }
.nav-contact-btn {
  display:inline-flex; align-items:center; gap:6px;
  height:30px; padding:0 12px; border-radius:4px;
  background:transparent; color:var(--text2); border:1px solid var(--border2);
  font-size:12px; font-weight:600; letter-spacing:0.5px;
  cursor:pointer; font-family:inherit; transition:all 0.2s;
}
.nav-contact-btn svg { flex-shrink:0; opacity:0.85; }
.nav-contact-btn:hover, .nav-contact-btn[aria-expanded="true"] {
  border-color:var(--blue); color:var(--blue); background:var(--blue-dim);
}
.nav-contact-pop {
  display:none; position:absolute; top:calc(100% + 8px); right:0;
  min-width:220px; background:var(--panel); border:1px solid var(--border2);
  border-radius:10px; padding:14px 16px; box-shadow:0 12px 36px rgba(26,46,74,0.12);
  z-index:120;
}
.nav-contact-pop.open { display:block; animation:contactPopIn 0.18s ease; }
@keyframes contactPopIn { from{opacity:0;transform:translateY(-6px)} to{opacity:1;transform:translateY(0)} }
.nav-contact-pop-title {
  font-family:Consolas,Monaco,monospace; font-size:9px; letter-spacing:2px;
  color:var(--text3); text-transform:uppercase; margin-bottom:8px;
}
.nav-contact-phone {
  display:block; font-size:20px; font-weight:800; color:var(--blue);
  letter-spacing:0.5px; text-decoration:none; margin-bottom:6px;
}
.nav-contact-phone:hover { color:#1d56a8; }
.nav-contact-hours { font-size:11px; color:var(--text3); line-height:1.55; margin:0; }

.modal-overlay {
  display:none; position:fixed; inset:0;
  background:rgba(15,30,55,0.52); z-index:200;
  align-items:center; justify-content:center; padding:20px;
  backdrop-filter:blur(4px);
}
.modal-overlay.open { display:flex; }
.modal-box {
  background:var(--panel); border-radius:12px; border:1px solid var(--border2);
  width:100%; max-width:510px; max-height:90vh; overflow-y:auto;
  box-shadow:0 20px 60px rgba(37,99,184,0.14);
  animation:modalIn 0.24s ease;
}
@keyframes modalIn { from{opacity:0;transform:translateY(14px)} to{opacity:1;transform:translateY(0)} }
.modal-header { display:flex; align-items:center; justify-content:space-between; padding:22px 26px 0; }
.modal-platform { font-family:Consolas,Monaco,monospace; font-size:10px; letter-spacing:2px; color:var(--text3); text-transform:uppercase; }
.modal-close {
  width:28px; height:28px; border:1px solid var(--border2); background:var(--bg3);
  border-radius:50%; cursor:pointer; font-size:14px; color:var(--text3);
  display:flex; align-items:center; justify-content:center; transition:all 0.2s;
}
.modal-close:hover { color:var(--text); border-color:var(--border2); background:var(--bg); }
.modal-title { font-family:'Noto Serif SC','Noto Serif CJK SC','Source Han Serif SC','Songti SC','SimSun',serif; font-size:22px; font-weight:700; color:var(--text); padding:10px 26px 0; }
.modal-subtitle { font-size:12px; color:var(--text3); padding:5px 26px 0; }
.modal-tabs {
  display:grid; grid-template-columns:1fr 1fr;
  margin:18px 26px 0; background:var(--bg3);
  border:1px solid var(--border2); border-radius:6px; overflow:hidden;
}
.modal-tab {
  padding:10px; text-align:center; font-size:13px; font-weight:500;
  cursor:pointer; background:transparent; color:var(--text3);
  letter-spacing:1px; border:none; font-family:inherit; transition:all 0.15s;
}
.modal-tab.active { background:var(--blue); color:#fff; font-weight:700; }
.modal-body { padding:20px 26px 26px; }
.form-section-label {
  font-family:Consolas,Monaco,monospace; font-size:9px; letter-spacing:3px;
  color:var(--text3); text-transform:uppercase; margin-bottom:14px;
  padding-bottom:8px; border-bottom:1px solid var(--border);
  display:flex; align-items:center; gap:8px;
}
.form-section-label::before { content:''; width:3px; height:10px; background:var(--blue); border-radius:2px; }
.form-field { margin-bottom:14px; }
.form-label { display:block; font-size:12px; color:var(--text2); font-weight:600; margin-bottom:5px; letter-spacing:0.3px; }
.form-label .req { color:var(--gold); margin-left:2px; }
.form-hint { font-size:10px; color:var(--gold); margin-bottom:4px; letter-spacing:0.3px; }
.form-input {
  width:100%; background:var(--bg2); border:1px solid var(--border2);
  border-radius:6px; padding:9px 12px; font-size:13px; color:var(--text);
  font-family:inherit; outline:none; transition:border-color 0.2s, box-shadow 0.2s;
}
.form-input:focus { border-color:var(--blue); box-shadow:0 0 0 3px var(--blue-dim); }
.form-input::placeholder { color:var(--text3); font-size:12px; }
.form-sms-row {
  display:flex; align-items:stretch; gap:8px;
}
.form-sms-row .form-input {
  flex:1 1 auto; width:auto; min-width:0;
}
.form-sms-row .btn-modal-secondary {
  width:auto; flex:0 0 auto; margin-top:0;
  padding:9px 14px; white-space:nowrap; letter-spacing:0;
}
.btn-modal-verify {
  width:100%; margin-top:0; margin-bottom:4px;
}
.form-divider { height:1px; background:var(--border); margin:16px 0; }
.checkbox-group { display:grid; grid-template-columns:1fr 1fr; gap:8px; margin-top:4px; }
.checkbox-item {
  display:flex; align-items:center; gap:8px; padding:9px 11px;
  border:1px solid var(--border2); border-radius:6px;
  cursor:pointer; transition:all 0.15s; user-select:none; background:var(--bg2);
}
.checkbox-item.checked { border-color:var(--blue); background:var(--blue-dim); }
.checkbox-item input[type=checkbox] { width:14px; height:14px; accent-color:var(--blue); flex-shrink:0; }
.checkbox-label { font-size:12px; color:var(--text2); line-height:1.3; }
.checkbox-tag { font-size:9px; padding:1px 5px; border-radius:2px; margin-left:3px; font-weight:700; font-family:Consolas,Monaco,monospace; }
.tag-magnet { background:rgba(37,99,184,0.10); color:var(--blue); }
.tag-billet { background:rgba(200,122,16,0.12); color:var(--gold); }
.will-open { background:var(--bg3); border:1px solid var(--border2); border-radius:6px; padding:11px 14px; margin-top:12px; }
.will-open-title { font-family:Consolas,Monaco,monospace; font-size:9px; letter-spacing:2px; color:var(--text3); text-transform:uppercase; margin-bottom:7px; }
.will-open-item { display:flex; gap:7px; font-size:12px; color:var(--text3); margin-bottom:3px; }
.will-open-item .tick { color:var(--success); }
.form-error { color:#c0392b; font-size:12px; margin-top:10px; }
.btn-license-upload {
  width:100%; padding:12px; background:var(--blue-dim); border:1.5px dashed var(--blue);
  border-radius:6px; font-size:14px; color:var(--blue); font-weight:700; cursor:pointer;
  font-family:inherit; transition:border-color .2s, background .2s;
}
.btn-license-upload:hover { border-color:#1d56a8; background:#e8f0fb; }
.reg-license-preview {
  margin-top:10px; padding:10px; background:var(--bg3); border:1px solid var(--border2);
  border-radius:8px; min-height:48px; text-align:center;
}
.reg-license-preview img {
  max-width:100%; max-height:220px; border:1px solid #e2e8f0; border-radius:6px; cursor:pointer;
}
.reg-license-preview .reg-license-pdf-btn {
  padding:8px 16px; background:var(--blue-dim); border:1px solid var(--blue);
  border-radius:6px; color:var(--blue); font-size:13px; font-weight:600; cursor:pointer; font-family:inherit;
}
.reg-license-preview .reg-license-pdf-btn:hover { background:#e8f0fb; }
.reg-license-preview .reg-license-meta { font-size:12px; color:var(--text3); margin-top:8px; word-break:break-all; }
.btn-modal-primary {
  width:100%; padding:12px; background:var(--blue); color:#fff; border:none;
  border-radius:5px; font-size:13px; font-weight:700; cursor:pointer;
  font-family:inherit; letter-spacing:2px; transition:background 0.2s; margin-top:18px;
  box-shadow:0 2px 10px var(--blue-glow);
}
.btn-modal-primary:hover { background:#1d56a8; }
.btn-modal-secondary {
  width:100%; padding:11px; background:var(--blue); color:#fff;
  border:none; border-radius:5px; font-size:13px; font-weight:600;
  cursor:pointer; font-family:inherit; letter-spacing:2px; transition:background 0.2s; margin-top:9px;
  box-shadow:0 2px 10px var(--blue-glow);
}
.btn-modal-secondary:hover { background:#1d56a8; }
.modal-note {
  background:var(--bg3); border:1px solid var(--border); border-radius:6px;
  padding:11px 14px; margin-top:14px; font-size:11px; color:var(--text3); line-height:1.8;
}
.modal-note strong { display:block; margin-bottom:3px; color:var(--text2); font-size:10px; letter-spacing:1px; font-family:Consolas,Monaco,monospace; }
.modal-footer-note { font-size:11px; color:var(--text3); text-align:center; margin-top:14px; }
.agreement-consent {
  display:flex; align-items:flex-start; gap:10px; margin-top:16px; padding:12px 14px;
  background:var(--bg3); border:1px solid var(--border2); border-radius:8px;
  cursor:pointer; user-select:none; transition:border-color .18s, background .18s;
}
.agreement-consent:hover { border-color:#c5d4e8; background:#f4f7fb; }
.agreement-consent.checked { border-color:var(--blue); background:var(--blue-dim); }
.agreement-consent input[type=checkbox] {
  appearance:none; -webkit-appearance:none; width:18px; height:18px; min-width:18px;
  margin:1px 0 0; border:1.5px solid #c8d2dc; border-radius:50%; background:#fff;
  cursor:pointer; position:relative; transition:border-color .18s, background .18s, box-shadow .18s;
}
.agreement-consent input[type=checkbox]:checked {
  border-color:var(--blue); background:var(--blue);
  box-shadow:0 0 0 3px rgba(37,99,184,.18);
}
.agreement-consent input[type=checkbox]:checked::after {
  content:''; position:absolute; left:50%; top:50%; width:6px; height:6px;
  margin:-3px 0 0 -3px; border-radius:50%; background:#fff;
}
.agreement-consent-text { font-size:12px; color:var(--text2); line-height:1.75; }
.agreement-consent-text a {
  color:var(--blue); text-decoration:none; font-weight:600;
}
.agreement-consent-text a:hover { text-decoration:underline; }
.link-forgot {
  display:inline-block; margin-top:10px; font-size:12px; color:var(--blue);
  background:none; border:none; cursor:pointer; padding:0; font-family:inherit;
  text-decoration:underline;
}
.link-forgot:hover { color:#1d56a8; }
.forgot-success-box {
  background:rgba(22,163,74,0.08); border:1px solid rgba(22,163,74,0.35);
  border-radius:8px; padding:14px; font-size:13px; color:var(--text2); line-height:1.7;
}
.success-icon {
  width:46px; height:46px; border-radius:50%;
  background:rgba(22,163,74,0.10); border:2px solid rgba(22,163,74,0.30);
  display:flex; align-items:center; justify-content:center;
  margin:0 auto 12px; font-size:20px; color:var(--success);
}
.success-badge {
  display:flex; align-items:center; gap:8px; padding:9px 12px;
  background:rgba(22,163,74,0.07); border:1px solid rgba(22,163,74,0.22);
  border-radius:5px; font-size:12px; color:var(--success); margin-bottom:7px;
}
.account-select-card {
  padding:14px 16px; border:1px solid var(--border2); border-radius:6px;
  cursor:pointer; transition:all 0.18s; margin-bottom:9px;
  display:flex; align-items:center; justify-content:space-between;
  background:var(--bg2);
}
.account-select-card.magnet { border-left:3px solid var(--blue); }
.account-select-card.billet { border-left:3px solid var(--gold); }
.account-select-card:hover { background:var(--bg3); }
.acct-name { font-size:14px; font-weight:700; color:var(--text); margin-bottom:2px; }
.acct-desc { font-size:11px; color:var(--text3); }
.acct-arrow { font-size:18px; color:var(--text3); }
::-webkit-scrollbar { width:4px; }
::-webkit-scrollbar-track { background:var(--bg); }
::-webkit-scrollbar-thumb { background:var(--border2); border-radius:2px; }
@keyframes fadeUp { from{opacity:0;transform:translateY(14px)} to{opacity:1;transform:translateY(0)} }
.hero-brand > * { animation:fadeUp 0.5s ease both; }
.hero-brand > *:nth-child(1){animation-delay:0.08s}
.hero-brand > *:nth-child(2){animation-delay:0.16s}
.hero-brand > *:nth-child(3){animation-delay:0.22s}
.hero-brand > *:nth-child(4){animation-delay:0.28s}
.hero-brand > *:nth-child(5){animation-delay:0.34s}
.hero-diagram { animation:fadeUp 0.5s ease both; animation-delay:0.42s; }

@media (max-width: 900px) {
  nav { padding: 0 20px; height: auto; min-height: 54px; flex-wrap: wrap; gap: 10px; padding-top: 10px; padding-bottom: 10px; }
  .nav-brand em { display: none; }
  .nav-divider, .nav-tag { display: none; }
  .hero { padding: 28px 20px 36px; }
  .hero-title { font-size: 26px; }
  .flow-node { width: 72px; }
  .flow-node-box { width: 52px; height: 52px; }
  .flow-arrow { width: 16px; }
}
@media (max-width: 640px) {
  nav { padding: 10px 14px; }
  .nav-brand { font-size: 12px; }
  .nav-right { width: 100%; justify-content: flex-end; }
  .btn-nav { flex: 1; max-width: 140px; }
  .hero-title { font-size: 22px; }
  .hero-desc { font-size: 12px; }
  .hero-btns { flex-direction: column; align-items: stretch; }
  .btn-hero-primary, .btn-hero-outline { width: 100%; }
  .flow-row { gap: 8px; }
  .flow-node { width: 64px; }
  .flow-node-label { font-size: 10px; }
  .flow-arrow { display: none; }
  footer { padding: 12px 16px; flex-direction: column; align-items: flex-start; }
  .nav-contact-pop { right: auto; left: 0; min-width: 200px; }
  .checkbox-group { grid-template-columns: 1fr; }
  .modal-box { max-height: 92vh; }
}