:root {
      --navy: #153b6d;
      --blue: #2680fe;
      --blue-dark: #155ec5;
      --blue-soft: #eaf3ff;
      --green: #149578;
      --orange: #f29138;
      --ink: #182231;
      --muted: #5d6b7c;
      --line: #dbe5f0;
      --surface: rgba(255,255,255,.94);
      --bg: #f3f7fc;
      --danger: #c93f4a;
      --shadow: 0 24px 70px rgba(21, 59, 109, .12);
      --radius: 22px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      min-height: 100vh;
      color: var(--ink);
      background:
        radial-gradient(circle at 8% 8%, rgba(38,128,254,.12), transparent 28%),
        radial-gradient(circle at 94% 18%, rgba(20,149,120,.10), transparent 24%),
        linear-gradient(145deg, #f8fbff 0%, var(--bg) 55%, #eef5fb 100%);
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
      -webkit-font-smoothing: antialiased;
    }

    body::before,
    body::after {
      content: "";
      position: fixed;
      z-index: -1;
      border: 1px solid rgba(38,128,254,.12);
      border-radius: 50%;
      pointer-events: none;
    }
    body::before { width: 380px; height: 380px; top: -170px; right: -90px; }
    body::after { width: 240px; height: 240px; bottom: -110px; left: -70px; }

    .page-shell {
      width: min(1180px, calc(100% - 40px));
      margin: 0 auto;
      padding: 42px 0 56px;
    }

    .topbar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 28px;
    }

    .brand-mark {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--navy);
      font-size: 14px;
      font-weight: 700;
      letter-spacing: .04em;
    }

    .brand-icon {
      display: grid;
      place-items: center;
      width: 36px;
      height: 36px;
      color: white;
      border-radius: 11px;
      background: linear-gradient(145deg, var(--blue), var(--navy));
      box-shadow: 0 10px 24px rgba(38,128,254,.22);
    }

    .status-chip {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 9px 13px;
      color: var(--blue-dark);
      background: rgba(255,255,255,.78);
      border: 1px solid rgba(38,128,254,.18);
      border-radius: 999px;
      font-size: 13px;
      font-weight: 650;
    }
    .status-chip::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--green);
      box-shadow: 0 0 0 4px rgba(20,149,120,.12);
    }

    .layout {
      display: grid;
      grid-template-columns: minmax(280px, .78fr) minmax(520px, 1.42fr);
      gap: 28px;
      align-items: start;
    }

    .intro {
      position: sticky;
      top: 28px;
      padding: 38px 34px;
      color: white;
      border-radius: var(--radius);
      background:
        linear-gradient(155deg, rgba(38,128,254,.95), rgba(21,59,109,.98)),
        var(--navy);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .intro::before {
      content: "";
      position: absolute;
      width: 210px;
      height: 210px;
      right: -95px;
      top: -95px;
      border: 1px solid rgba(255,255,255,.22);
      border-radius: 50%;
    }

    .eyebrow {
      display: inline-flex;
      padding: 7px 11px;
      border: 1px solid rgba(255,255,255,.28);
      border-radius: 999px;
      color: #dcebff;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: .08em;
    }

    h1 {
      max-width: 8em;
      margin: 24px 0 16px;
      font-size: clamp(34px, 4vw, 52px);
      line-height: 1.08;
      letter-spacing: -.04em;
    }

    .lead {
      margin: 0;
      color: rgba(255,255,255,.82);
      font-size: 15px;
      line-height: 1.8;
    }

    .benefits {
      display: grid;
      gap: 12px;
      margin-top: 34px;
    }

    .benefit {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      padding: 13px 14px;
      border: 1px solid rgba(255,255,255,.16);
      background: rgba(255,255,255,.08);
      border-radius: 14px;
    }

    .benefit svg { flex: 0 0 auto; margin-top: 1px; }
    .benefit strong { display: block; margin-bottom: 3px; font-size: 14px; }
    .benefit span { color: rgba(255,255,255,.68); font-size: 12px; line-height: 1.55; }

    .deadline {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 14px;
      margin-top: 26px;
      padding-top: 20px;
      border-top: 1px solid rgba(255,255,255,.16);
      color: rgba(255,255,255,.72);
      font-size: 12px;
    }
    .deadline strong { color: white; font-size: 16px; }

    .form-card {
      padding: 34px;
      background: var(--surface);
      border: 1px solid rgba(216,227,241,.9);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      backdrop-filter: blur(14px);
    }

    .form-head {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      align-items: flex-start;
      padding-bottom: 24px;
      border-bottom: 1px solid var(--line);
    }
    .form-head h2 { margin: 0 0 8px; font-size: 24px; letter-spacing: -.02em; }
    .form-head p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.65; }
    .required-note { flex: 0 0 auto; color: var(--muted); font-size: 12px; }
    .required-note b { color: var(--danger); }

    form { margin-top: 6px; }
    fieldset {
      margin: 0;
      padding: 26px 0;
      border: 0;
      border-bottom: 1px solid var(--line);
    }
    fieldset:last-of-type { border-bottom: 0; padding-bottom: 20px; }

    legend {
      display: flex;
      align-items: center;
      gap: 11px;
      width: 100%;
      padding: 0 0 18px;
      font-size: 16px;
      font-weight: 750;
    }
    .step {
      display: inline-grid;
      place-items: center;
      width: 29px;
      height: 29px;
      color: white;
      background: var(--navy);
      border-radius: 9px;
      font-size: 12px;
    }

    .field { margin-bottom: 21px; }
    .field:last-child { margin-bottom: 0; }
    .field-label {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 10px;
      font-size: 14px;
      font-weight: 700;
    }
    .field-hint { color: var(--muted); font-size: 12px; font-weight: 400; }
    .req { color: var(--danger); }

    input[type="text"],
    input[type="tel"],
    input[type="email"] {
      width: 100%;
      min-height: 48px;
      padding: 0 14px;
      color: var(--ink);
      background: #fbfdff;
      border: 1px solid #cfdbea;
      border-radius: 12px;
      outline: none;
      font: inherit;
      font-size: 14px;
      transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
    }
    input::placeholder { color: #9aa7b7; }
    input:focus {
      border-color: var(--blue);
      background: white;
      box-shadow: 0 0 0 4px rgba(38,128,254,.12);
    }

    .option-grid { display: grid; gap: 10px; }
    .option-grid.account { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .option-grid.account .option:last-child { grid-column: 1 / -1; }
    .option-grid.mode { grid-template-columns: repeat(2, minmax(0, 1fr)); }

    .option { position: relative; display: block; cursor: pointer; }
    .option input {
      position: absolute;
      opacity: 0;
      pointer-events: none;
    }
    .option-content {
      display: flex;
      min-height: 78px;
      gap: 12px;
      align-items: flex-start;
      padding: 16px;
      border: 1px solid #d4dfec;
      border-radius: 14px;
      background: #fbfdff;
      transition: transform .15s ease, border-color .15s ease, background .15s ease, box-shadow .15s ease;
    }
    .option:hover .option-content { transform: translateY(-1px); border-color: #a9c7ec; }
    .option input:focus-visible + .option-content { outline: 3px solid rgba(38,128,254,.22); outline-offset: 2px; }
    .option input:checked + .option-content {
      border-color: var(--blue);
      background: var(--blue-soft);
      box-shadow: inset 0 0 0 1px rgba(38,128,254,.16);
    }
    .option input:checked + .option-content .selector {
      color: white;
      border-color: var(--blue);
      background: var(--blue);
    }
    .option input[type="radio"] + .option-content .selector { border-radius: 50%; }

    .selector {
      display: grid;
      place-items: center;
      flex: 0 0 auto;
      width: 23px;
      height: 23px;
      color: transparent;
      border: 1.5px solid #aebccc;
      border-radius: 7px;
      font-size: 13px;
      font-weight: 800;
      transition: all .15s ease;
    }
    .option-title { display: block; margin: 1px 0 5px; font-size: 14px; font-weight: 750; }
    .option-desc { display: block; color: var(--muted); font-size: 12px; line-height: 1.55; }

    .contact-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
    }
    .contact-grid .field:last-child { grid-column: 1 / -1; }

    .error {
      display: none;
      margin-top: 8px;
      color: var(--danger);
      font-size: 12px;
      line-height: 1.5;
    }
    .has-error .error { display: block; }
    .has-error input[type="text"],
    .has-error input[type="tel"],
    .has-error input[type="email"] { border-color: var(--danger); }

    .consent {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      margin: 4px 0 22px;
      color: var(--muted);
      font-size: 12px;
      line-height: 1.65;
      cursor: pointer;
    }
    .consent input { margin-top: 3px; accent-color: var(--blue); }

    .actions { display: flex; align-items: center; gap: 16px; }
    .submit-btn,
    .secondary-btn {
      min-height: 50px;
      border: 0;
      border-radius: 13px;
      font: inherit;
      font-weight: 750;
      cursor: pointer;
      transition: transform .15s ease, box-shadow .15s ease, opacity .15s ease;
    }
    .submit-btn {
      flex: 1;
      color: white;
      background: linear-gradient(135deg, var(--blue), var(--blue-dark));
      box-shadow: 0 12px 28px rgba(38,128,254,.24);
    }
    .submit-btn:hover { transform: translateY(-1px); box-shadow: 0 15px 34px rgba(38,128,254,.3); }
    .submit-btn:disabled { opacity: .65; cursor: wait; transform: none; }
    .action-note { color: var(--muted); font-size: 12px; }

    .success {
      display: none;
      text-align: center;
      padding: 44px 24px 30px;
    }
    .success.show { display: block; }
    .success-icon {
      display: grid;
      place-items: center;
      width: 66px;
      height: 66px;
      margin: 0 auto 22px;
      color: white;
      background: var(--green);
      border-radius: 50%;
      box-shadow: 0 14px 28px rgba(20,149,120,.22);
    }
    .success h2 { margin: 0 0 10px; font-size: 28px; }
    .success > p { max-width: 470px; margin: 0 auto; color: var(--muted); line-height: 1.75; }
    .summary {
      max-width: 520px;
      margin: 28px auto;
      padding: 18px 20px;
      text-align: left;
      border: 1px solid var(--line);
      border-radius: 14px;
      background: #f8fbff;
    }
    .summary-row { display: flex; justify-content: space-between; gap: 20px; padding: 7px 0; font-size: 13px; }
    .summary-row span { flex: 0 0 auto; color: var(--muted); }
    .summary-row strong { min-width: 0; text-align: right; overflow-wrap: anywhere; word-break: break-word; }
    .secondary-btn { padding: 0 22px; color: var(--navy); background: var(--blue-soft); }

    footer {
      margin-top: 20px;
      color: #7b8898;
      text-align: center;
      font-size: 11px;
      line-height: 1.6;
    }

    @media (max-width: 900px) {
      .page-shell { width: min(100% - 28px, 720px); padding-top: 24px; }
      .layout { grid-template-columns: 1fr; }
      .intro { position: relative; top: auto; padding: 30px; }
      h1 { max-width: none; font-size: 38px; }
      .benefits { grid-template-columns: repeat(2, minmax(0,1fr)); }
    }

    @media (max-width: 600px) {
      .page-shell { width: min(100% - 20px, 520px); padding-bottom: 30px; }
      .topbar { margin-bottom: 18px; }
      .status-chip { display: none; }
      .intro, .form-card { border-radius: 18px; }
      .intro { padding: 26px 22px; }
      h1 { font-size: 34px; }
      .lead { font-size: 14px; }
      .benefits { grid-template-columns: 1fr; margin-top: 24px; }
      .form-card { padding: 24px 18px; }
      .form-head { display: block; }
      .required-note { margin-top: 12px; }
      .option-grid.account,
      .option-grid.mode,
      .contact-grid { grid-template-columns: 1fr; }
      .option-grid.account .option:last-child,
      .contact-grid .field:last-child { grid-column: auto; }
      .actions { flex-direction: column; align-items: stretch; }
      .action-note { text-align: center; }
    }

    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
    }
.consent-error { margin: -15px 0 18px; }