:root {
    --cpp-blue: #246bdb;
    --cpp-blue-dark: #174ea6;
    --cpp-blue-soft: #eef5ff;
    --cpp-line: #d7e3f3;
    --cpp-text: #172033;
    --cpp-muted: #667085;
}

* { box-sizing: border-box; }
body {
    min-height: 100vh;
    margin: 0;
    padding: 0 !important;
    color: var(--cpp-text);
    background: #edf5ff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
a { text-decoration: none; }
.register-page { min-height: 100vh; display: flex; flex-direction: column; }
.register-topbar {
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 max(28px, calc((100vw - 1120px) / 2));
    background: #fff;
    border-bottom: 1px solid var(--cpp-line);
}
.register-brand { display: flex; align-items: center; gap: 11px; color: var(--cpp-blue-dark); font-size: 22px; font-weight: 750; }
.register-brand-mark { width: 38px; height: 38px; display: grid; place-items: center; color: #fff; background: var(--cpp-blue); border-radius: 10px; font-weight: 800; }
.register-top-actions { display: flex; align-items: center; gap: 10px; color: var(--cpp-muted); font-size: 14px; }
.register-top-actions a { color: var(--cpp-blue); font-weight: 700; }
.register-stage {
    flex: 1;
    display: grid;
    place-items: center;
    padding: 12px 24px;
    background: linear-gradient(135deg, #ddebff 0%, #f7faff 50%, #e8f2ff 100%);
}
.register-frame {
    width: min(1000px, 100%);
    min-height: 600px;
    display: grid;
    grid-template-columns: 0.92fr 1.08fr;
    overflow: hidden;
    background: #fff;
    border: 1px solid rgba(174, 201, 239, .82);
    border-radius: 16px;
    box-shadow: 0 26px 70px rgba(28, 75, 139, .14);
}
.register-guide {
    position: relative;
    padding: 44px;
    overflow: hidden;
    color: #fff;
    background: linear-gradient(145deg, #174ea6 0%, #246bdb 62%, #4c8def 100%);
}
.register-guide:after {
    content: "";
    position: absolute;
    right: -220px;
    bottom: -280px;
    width: 560px;
    height: 560px;
    border: 1px solid rgba(255, 255, 255, .18);
    border-radius: 50%;
    box-shadow: 0 0 0 68px rgba(255, 255, 255, .05), 0 0 0 136px rgba(255, 255, 255, .04);
}
.register-guide > * { position: relative; z-index: 1; }
.register-guide-label { display: inline-flex; padding: 6px 10px; color: #dceaff; border: 1px solid rgba(255, 255, 255, .32); border-radius: 6px; font-size: 13px; font-weight: 700; }
.register-guide h1 { max-width: 360px; margin: 38px 0 32px; font-size: 34px; line-height: 1.35; }
.register-guide ol { display: grid; gap: 22px; margin: 0; padding: 0; list-style: none; }
.register-guide li { display: grid; grid-template-columns: 36px 1fr; gap: 14px; align-items: start; }
.register-guide li > b { width: 32px; height: 32px; display: grid; place-items: center; color: var(--cpp-blue-dark); background: #fff; border-radius: 50%; }
.register-guide li div { display: grid; gap: 5px; }
.register-guide li strong { font-size: 16px; }
.register-guide li span { color: rgba(255, 255, 255, .78); font-size: 13px; line-height: 1.6; }
.register-panel { display: flex; align-items: center; padding: 24px 58px; }
.register-card { width: 100%; }
.register-card h2 { margin: 0 0 8px; font-size: 30px; }
.register-subtitle { margin: 0 0 25px; color: var(--cpp-muted); font-size: 14px; }
#register-form .form-group { margin-bottom: 16px; }
#register-form label:not(.register-agreement) { display: block; margin-bottom: 8px; color: #344054; font-weight: 650; }
#register-form .form-control {
    width: 100%;
    height: 48px;
    padding: 11px 14px;
    color: var(--cpp-text);
    background: #fff;
    border: 1px solid #c9d7ea;
    border-radius: 8px;
    box-shadow: none;
    font-size: 15px;
}
#register-form .form-control:focus { border-color: var(--cpp-blue); box-shadow: 0 0 0 3px rgba(36, 107, 219, .12); outline: 0; }
#register-form .help-block { min-height: 18px; margin: 5px 0 0; color: #7b8493; font-size: 12px; line-height: 1.5; }
.register-code-row { display: grid; grid-template-columns: minmax(0, 1fr) 118px; gap: 10px; }
.register-code-button {
    height: 48px;
    padding: 0 14px;
    color: var(--cpp-blue);
    background: var(--cpp-blue-soft);
    border: 1px solid #bfd4f2;
    border-radius: 8px;
    font-weight: 700;
    white-space: nowrap;
    cursor: pointer;
}
.register-code-button:hover { color: #fff; background: var(--cpp-blue); border-color: var(--cpp-blue); }
.register-code-button:disabled { color: #8292aa; background: #f1f4f8; border-color: #dfe6ef; cursor: not-allowed; }
.register-agreement { display: flex; align-items: flex-start; gap: 9px; margin: 2px 0 18px; color: #667085; font-size: 12px; line-height: 1.65; cursor: pointer; }
.register-agreement input { flex: 0 0 auto; margin: 3px 0 0; }
.register-agreement a { color: var(--cpp-blue); }
.register-submit { width: 100%; height: 50px; border: 0; border-radius: 8px; color: #fff; background: var(--cpp-blue); font-size: 16px; font-weight: 750; white-space: nowrap; }
.register-submit:hover, .register-submit:focus { color: #fff; background: var(--cpp-blue-dark); }
.register-submit:disabled { opacity: .66; cursor: not-allowed; }
.register-security { margin: 18px 0 0; padding-top: 16px; color: #7b8493; border-top: 1px solid #edf1f7; font-size: 12px; text-align: center; }

@media (max-width: 760px) {
    .register-topbar { height: 60px; padding: 0 18px; }
    .register-top-actions span { display: none; }
    .register-stage { display: block; padding: 18px 14px 30px; }
    .register-frame { display: block; min-height: 0; }
    .register-guide { padding: 28px 24px 26px; }
    .register-guide h1 { margin: 22px 0 0; font-size: 26px; }
    .register-guide ol { display: none; }
    .register-panel { padding: 30px 22px 34px; }
    .register-card h2 { font-size: 25px; }
    .register-code-row { grid-template-columns: minmax(0, 1fr) 108px; gap: 8px; }
    .register-code-button { padding: 0 8px; font-size: 13px; }
}