:root {
  color-scheme: light;
  --bg: #f8fbff;
  --card: rgba(255, 255, 255, 0.86);
  --blue: #2563eb;
  --blue-2: #60a5fa;
  --cyan: #7dd3fc;
  --ink: #0b1b3a;
  --text: #334155;
  --muted: #64748b;
  --line: #e5edf8;
  --header-line: #e6ecf5;
  --shadow: 0 18px 45px rgba(37, 99, 235, 0.08);
  --btn-shadow: 0 10px 24px rgba(37, 99, 235, 0.25);
  --serif: "Noto Serif TC", "Songti TC", "PMingLiU", serif;
  --sans: "Noto Sans TC", "Microsoft JhengHei", "PingFang TC", system-ui, sans-serif;
  font-family: var(--sans);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    radial-gradient(circle at 78% 15%, rgba(191, 219, 254, 0.48), transparent 28%),
    linear-gradient(180deg, #fbfdff, var(--bg));
}

button {
  font: inherit;
  cursor: pointer;
}

.membership-page {
  min-height: 100vh;
  position: relative;
  overflow: hidden;
}

.membership-page::before {
  content: "";
  position: absolute;
  inset: 72px -6% auto -6%;
  height: 650px;
  pointer-events: none;
  opacity: 0.66;
  background:
    radial-gradient(circle at 93% 35%, rgba(255, 255, 255, 0.95) 0 2px, transparent 3px) 0 0 / 28px 28px,
    repeating-radial-gradient(ellipse at 83% 46%, transparent 0 84px, rgba(185, 209, 248, 0.36) 85px 86px),
    repeating-radial-gradient(ellipse at 9% 67%, transparent 0 118px, rgba(207, 222, 249, 0.32) 119px 120px);
}

.site-header {
  height: 72px;
  position: relative;
  z-index: 10;
  border-bottom: 1px solid var(--header-line);
  background: rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(18px);
}

.header-inner {
  width: min(100%, 1760px);
  height: 100%;
  margin: 0 auto;
  padding: 0 64px;
  display: flex;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--ink);
  text-decoration: none;
  font-size: 23px;
  font-weight: 800;
}

.brand svg {
  width: 44px;
  height: 36px;
  flex: 0 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 44px;
  margin-left: auto;
}

.nav a {
  position: relative;
  height: 72px;
  display: grid;
  place-items: center;
  color: var(--ink);
  text-decoration: none;
  font-size: 16px;
  font-weight: 700;
  white-space: nowrap;
}

.nav a.active {
  color: var(--blue);
}

.nav a.active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 36px;
  height: 4px;
  transform: translateX(-50%);
  border-radius: 999px;
  background: linear-gradient(90deg, #2f6df2, #63a6ff);
}

.login {
  display: grid;
  place-items: center;
  width: 96px;
  height: 40px;
  margin-left: 48px;
  color: #fff;
  text-decoration: none;
  border-radius: 16px;
  background: linear-gradient(135deg, #2563eb, #3b82f6);
  box-shadow: var(--btn-shadow);
  font-size: 16px;
  font-weight: 800;
}

.membership-shell {
  position: relative;
  z-index: 1;
  width: min(1510px, calc(100% - 96px));
  margin: 0 auto;
  padding: 54px 0 46px;
}

.membership-hero {
  display: grid;
  justify-items: center;
  gap: 18px;
  margin-bottom: 34px;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 34px;
  margin: 0;
  padding: 0 14px;
  border: 1px solid #d7e4fb;
  border-radius: 10px;
  color: var(--blue);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 6px 18px rgba(72, 126, 221, 0.08);
  font-size: 17px;
  font-weight: 800;
}

.spark {
  width: 18px;
  height: 18px;
  position: relative;
}

.spark::before,
.spark::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 18px;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, #7cbcff, #547cff);
}

.spark::after {
  transform: rotate(90deg);
}

h1 {
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(50px, 4.2vw, 76px);
  line-height: 1.06;
  font-weight: 900;
  letter-spacing: 0.03em;
}

.lead {
  max-width: 860px;
  margin: 0;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.8;
  font-weight: 650;
}

.plan-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
}

.plan-card {
  min-height: 536px;
  display: grid;
  align-content: start;
  gap: 24px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.advanced-plan {
  color: #fff;
  border-color: rgba(125, 211, 252, 0.44);
  background:
    radial-gradient(circle at 86% 18%, rgba(125, 211, 252, 0.2), transparent 28%),
    linear-gradient(135deg, rgba(9, 25, 61, 0.97), rgba(30, 64, 124, 0.94));
}

.plan-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.plan-code {
  display: block;
  margin-bottom: 10px;
  color: var(--blue);
  font-size: 15px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.advanced-plan .plan-code {
  color: #93d9ff;
}

.plan-head h2 {
  margin: 0;
  font-size: 34px;
  line-height: 1.2;
  font-weight: 900;
}

.plan-head em {
  align-self: start;
  padding: 7px 12px;
  border-radius: 10px;
  color: #0e4f90;
  background: #e6f3ff;
  font-style: normal;
  font-size: 14px;
  font-weight: 900;
}

.advanced-plan .plan-head em {
  color: #fff;
  background: linear-gradient(135deg, #347cff, #72c8ff);
}

.fit {
  margin: 0;
  padding: 18px;
  border: 1px solid rgba(91, 138, 216, 0.18);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.58);
  color: var(--ink);
  font-size: 20px;
  line-height: 1.45;
  font-weight: 850;
}

.advanced-plan .fit {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.08);
}

.feature-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 10px;
  color: var(--text);
  font-size: 17px;
  line-height: 1.45;
  font-weight: 750;
}

.advanced-plan .feature-list li {
  color: rgba(255, 255, 255, 0.92);
}

.feature-list span {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 7px;
  color: #fff;
  background: linear-gradient(135deg, #347cff, #72c8ff);
  font-size: 14px;
  font-weight: 900;
}

.plan-action {
  min-height: 54px;
  margin-top: 6px;
  border: 1px solid #cddbf3;
  border-radius: 12px;
  font-size: 17px;
  font-weight: 900;
}

.basic-action {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(135deg, #2563eb, #60a5fa);
  box-shadow: var(--btn-shadow);
}

.advanced-action {
  color: #071a3a;
  border-color: transparent;
  background: linear-gradient(135deg, #ffffff, #dff4ff);
}

.review-note {
  margin: -10px 0 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  line-height: 1.6;
  font-weight: 700;
}

.compare-panel {
  margin-top: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.compare-row {
  display: grid;
  grid-template-columns: 1.1fr 0.95fr 0.95fr;
  min-height: 58px;
  border-bottom: 1px solid var(--line);
}

.compare-row:last-child {
  border-bottom: 0;
}

.compare-row > div {
  display: flex;
  align-items: center;
  padding: 0 22px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 850;
}

.compare-head > div {
  background: #f2f7ff;
  font-size: 15px;
  letter-spacing: 0.04em;
}

.footnote {
  margin: 20px 0 0;
  color: var(--muted);
  text-align: center;
  font-size: 14px;
  font-weight: 650;
}

.application-toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  z-index: 300;
  max-width: min(520px, calc(100% - 36px));
  padding: 14px 18px;
  border-radius: 12px;
  color: #fff;
  background: #0f172a;
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.2);
  font-size: 14px;
  font-weight: 800;
  line-height: 1.55;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 12px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.application-toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 1080px) {
  .header-inner {
    padding: 0 24px;
  }

  .nav {
    gap: 22px;
  }

  .login {
    margin-left: 28px;
  }

  .membership-shell {
    width: min(100% - 40px, 1510px);
  }
}

@media (max-width: 860px) {
  .site-header {
    height: auto;
  }

  .header-inner {
    min-height: 72px;
    flex-wrap: wrap;
    gap: 0 18px;
    padding-bottom: 10px;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: space-between;
    margin-left: 0;
    gap: 10px;
    overflow-x: auto;
  }

  .nav a {
    height: 44px;
    font-size: 14px;
  }

  .plan-grid,
  .compare-row {
    grid-template-columns: 1fr;
  }

  .plan-card {
    min-height: auto;
  }
}