:root {
    --bg: #061722;
    --bg-deep: #040e16;
    --text: #f5f6f7;
    --soft: #c9ced4;
    --muted: #9ba1a8;
    --dim: #6a7178;
    --line: rgba(255, 255, 255, 0.09);
    --line-strong: rgba(255, 255, 255, 0.16);
    --card: rgba(255, 255, 255, 0.035);
    --card-hover: rgba(255, 255, 255, 0.06);
    --green: #00ff7f;
    --green-soft: #8fe3b4;
    --green-glow: rgba(0, 255, 127, 0.28);
    --gold: #f5c85c;
    --radius: 18px;
    --mono: "Anonymous Pro", ui-monospace, monospace;
  }
  * { box-sizing: border-box; }
  html { -webkit-text-size-adjust: 100%; }
  body {
    margin: 0;
    min-height: 100vh;
    font-family: Inter, -apple-system, system-ui, sans-serif;
    color: var(--text);
    background: var(--bg);
    background-image:
      radial-gradient(1100px 620px at 50% -180px, rgba(64, 140, 200, 0.32), transparent 70%),
      radial-gradient(700px 500px at 85% 110%, rgba(0, 255, 127, 0.06), transparent 70%),
      linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
  }
  body::before { /* faint chart grid */
    content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0;
    background-image:
      linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: radial-gradient(ellipse at 50% 0%, #000 0%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 0%, transparent 75%);
  }
  .wrap { position: relative; z-index: 1; max-width: 1080px; margin: 0 auto; padding: 40px 20px 64px; }

  /* header */
  header { text-align: center; margin-bottom: 40px; }
  .logo { width: 76px; height: 76px; display: block; margin: 0 auto 18px; filter: drop-shadow(0 0 18px rgba(120, 190, 255, 0.35)); }
  .pill {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 7px 14px; border-radius: 999px; font-size: 12px; font-weight: 600; color: var(--soft);
    border: 1px solid rgba(90, 160, 255, 0.55); background: rgba(10, 30, 50, 0.6);
    box-shadow: 0 0 22px rgba(70, 140, 255, 0.25), inset 0 0 12px rgba(70, 140, 255, 0.12);
  }
  .pill svg { width: 13px; height: 13px; color: var(--green); }
  h1 { font-size: clamp(30px, 5vw, 46px); line-height: 1.08; letter-spacing: -0.02em; margin: 20px 0 12px; font-weight: 800; }
  h1 span { color: var(--green); }
  .lede { color: var(--muted); font-size: 16px; line-height: 1.55; margin: 0 auto; max-width: 520px; }

  .step-label {
    font-family: var(--mono); font-size: 12px; letter-spacing: 0.32em; text-transform: uppercase;
    color: var(--muted); display: flex; align-items: center; gap: 10px; margin: 0 0 14px;
  }
  .step-label b { color: var(--green); font-weight: 700; }
  .step-label::after { content: ""; flex: 1; height: 1px; background: linear-gradient(90deg, var(--line-strong), transparent); }

  /* package cards */
  .packages { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-bottom: 40px; }
  .pkg {
    position: relative; text-align: left; cursor: pointer; font: inherit; color: inherit;
    padding: 20px 20px 18px; border-radius: var(--radius);
    background: var(--card); border: 1px solid var(--line);
    transition: border-color .2s, background .2s, box-shadow .25s, transform .2s;
    display: flex; flex-direction: column; gap: 10px; min-height: 168px;
  }
  .pkg:hover { background: var(--card-hover); border-color: var(--line-strong); }
  .pkg:active { transform: scale(0.995); }
  .pkg:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; }
  .pkg[aria-checked="true"] {
    border-color: var(--green);
    background: linear-gradient(180deg, rgba(0, 255, 127, 0.07), rgba(0, 255, 127, 0.015));
    box-shadow: 0 0 0 1px var(--green) inset, 0 10px 40px -12px var(--green-glow);
  }
  .pkg-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
  .pkg-kicker { font-family: var(--mono); font-size: 11px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--green-soft); }
  .radio {
    flex: none; width: 22px; height: 22px; border-radius: 50%; border: 1.5px solid var(--line-strong);
    display: grid; place-items: center; transition: all .2s;
  }
  .radio svg { width: 12px; height: 12px; color: #04140c; opacity: 0; transform: scale(.6); transition: all .2s; }
  .pkg[aria-checked="true"] .radio { background: var(--green); border-color: var(--green); box-shadow: 0 0 14px var(--green-glow); }
  .pkg[aria-checked="true"] .radio svg { opacity: 1; transform: scale(1); }
  .pkg-name { font-size: 19px; font-weight: 700; line-height: 1.25; letter-spacing: -0.01em; }
  .pkg-name small { display: block; font-size: 14px; font-weight: 500; color: var(--muted); margin-top: 3px; }
  .pkg-meta { display: flex; flex-wrap: wrap; gap: 6px; }
  .chip { font-size: 12px; color: var(--soft); padding: 4px 9px; border-radius: 999px; background: rgba(255,255,255,0.05); border: 1px solid var(--line); }
  .pkg-price { margin-top: auto; display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; padding-top: 4px; }
  .pkg-price strong { font-size: 26px; font-weight: 800; letter-spacing: -0.02em; }
  .pkg-price span { font-size: 13px; color: var(--muted); }

  /* detail panel */
  .panel {
    display: grid; grid-template-columns: 1.15fr 1fr; gap: 0;
    border-radius: 22px; border: 1px solid var(--line); background: rgba(8, 20, 30, 0.72);
    backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
    box-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.6);
  }
  .included { padding: 28px; border-right: 1px solid var(--line); }
  .included h2, .pay h2 { font-size: 20px; margin: 0 0 4px; letter-spacing: -0.01em; }
  .included .sub, .pay .sub { color: var(--muted); font-size: 14px; margin: 0 0 18px; }
  .list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px 18px; }
  .list li { display: flex; gap: 10px; font-size: 14.5px; line-height: 1.4; color: var(--soft); opacity: 0; transform: translateY(6px); animation: rise .35s ease forwards; }
  .list li svg { flex: none; width: 18px; height: 18px; margin-top: 1px; color: var(--green); }
  .list li.hl { color: var(--text); font-weight: 600; }
  @keyframes rise { to { opacity: 1; transform: none; } }

  .pay { padding: 28px; display: flex; flex-direction: column; }

  /* dropdown */
  .dd { position: relative; margin-bottom: 18px; }
  .dd-btn {
    width: 100%; font: inherit; color: inherit; cursor: pointer; text-align: left;
    display: flex; align-items: center; gap: 12px; padding: 14px 16px; border-radius: 14px;
    background: rgba(255,255,255,0.05); border: 1px solid var(--line-strong);
    transition: border-color .2s, box-shadow .2s;
  }
  .dd-btn:hover { border-color: rgba(255,255,255,0.28); }
  .dd-btn:focus-visible, .dd.open .dd-btn { outline: none; border-color: var(--green); box-shadow: 0 0 0 3px rgba(0,255,127,0.15); }
  .dd-btn .opt-text { flex: 1; min-width: 0; }
  .chev { width: 18px; height: 18px; color: var(--muted); transition: transform .2s; flex: none; }
  .dd.open .chev { transform: rotate(180deg); }
  .opt-title { font-weight: 700; font-size: 15.5px; display: block; }
  .opt-sub { font-size: 13px; color: var(--muted); display: block; margin-top: 2px; }
  .tag { flex: none; font-size: 11px; font-weight: 700; padding: 4px 8px; border-radius: 999px; letter-spacing: 0.02em; }
  .tag.best { color: #04140c; background: var(--green); }
  .tag.extra { color: var(--gold); background: rgba(245, 200, 92, 0.1); border: 1px solid rgba(245, 200, 92, 0.35); }
  .dd-list {
    position: absolute; left: 0; right: 0; top: calc(100% + 8px); z-index: 20; margin: 0; padding: 6px; list-style: none;
    background: #0b1d2a; border: 1px solid var(--line-strong); border-radius: 14px;
    box-shadow: 0 24px 60px -10px rgba(0,0,0,0.7);
    opacity: 0; transform: translateY(-4px); pointer-events: none; transition: opacity .15s, transform .15s;
    max-height: min(420px, 70vh); overflow-y: auto;
  }
  .dd.open .dd-list { opacity: 1; transform: none; pointer-events: auto; }
  .dd-list li { display: flex; align-items: center; gap: 12px; padding: 12px; border-radius: 10px; cursor: pointer; }
  .dd-list li:hover, .dd-list li.active { background: rgba(255,255,255,0.06); }
  .dd-list li[aria-selected="true"] .opt-title { color: var(--green); }
  .dd-list li .opt-text { flex: 1; }

  .summary { border-radius: 14px; padding: 16px; background: rgba(0, 255, 127, 0.045); border: 1px solid rgba(0, 255, 127, 0.18); margin-bottom: 18px; }
  .due { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
  .due span { color: var(--soft); font-size: 14px; }
  .due strong { font-size: 30px; font-weight: 800; letter-spacing: -0.02em; }
  .then { margin: 8px 0 0; font-size: 13.5px; line-height: 1.5; color: var(--muted); }
  .then b { color: var(--soft); font-weight: 600; }

  .cta {
    display: flex; align-items: center; justify-content: center; gap: 10px; text-decoration: none;
    font-weight: 800; font-size: 16.5px; color: #04140c; background: var(--green);
    padding: 17px 20px; border-radius: 14px; margin-top: auto;
    box-shadow: 0 12px 34px -10px var(--green-glow), inset 0 -2px 0 rgba(0,0,0,0.12);
    transition: transform .15s, box-shadow .2s, filter .2s;
  }
  .cta:hover { filter: brightness(1.06); box-shadow: 0 16px 44px -10px rgba(0,255,127,0.45); }
  .cta:active { transform: translateY(1px); }
  .cta:focus-visible { outline: 2px solid #fff; outline-offset: 3px; }
  .cta svg { width: 18px; height: 18px; }
  .secure { display: flex; align-items: center; justify-content: center; gap: 7px; font-size: 12.5px; color: var(--dim); margin-top: 12px; }
  .secure svg { width: 13px; height: 13px; }

  footer { text-align: center; color: var(--dim); font-size: 12.5px; line-height: 1.6; margin-top: 30px; }
  footer a { color: var(--muted); }

  @media (max-width: 860px) {
    .panel { grid-template-columns: 1fr; }
    .included { border-right: 0; border-bottom: 1px solid var(--line); }
  }
  @media (max-width: 620px) {
    .wrap { padding: 28px 16px 48px; }
    header { margin-bottom: 30px; }
    .packages { grid-template-columns: 1fr; gap: 10px; margin-bottom: 30px; }
    .pkg { min-height: 0; padding: 16px; }
    .pkg-name { font-size: 17px; }
    .pkg-price strong { font-size: 23px; }
    .included, .pay { padding: 22px 18px; }
    .list { grid-template-columns: 1fr; }
    .due strong { font-size: 26px; }
  }
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; }
    .list li { opacity: 1; transform: none; }
  }

/* payment-plan terms (shown whenever a plan is selected) */
.terms { display: flex; gap: 10px; align-items: flex-start; margin: 0 0 18px; padding: 12px 14px; border-radius: 12px;
  font-size: 13px; line-height: 1.5; color: var(--soft); background: rgba(245, 200, 92, 0.06); border: 1px solid rgba(245, 200, 92, 0.25); }
.terms svg { flex: none; width: 16px; height: 16px; margin-top: 1px; color: var(--gold); }
.terms[hidden] { display: none; }