:root {
  color-scheme: light dark;
  --canvas: #f5eee7;
  --canvas-deep: #ebe2d9;
  --wallpaper: url("membership-paper-wallpaper.png");
  --wallpaper-wash: rgba(255, 250, 244, 0.08);
  --paper: rgba(255, 253, 249, 0.40);
  --paper-strong: rgba(255, 254, 251, 0.58);
  --ink: #171817;
  --muted: #6f716f;
  --soft: #8f918e;
  --line: rgba(255, 255, 255, 0.62);
  --inner-line: rgba(49, 43, 37, 0.10);
  --accent: #10b981;
  --accent-soft: rgba(16, 185, 129, 0.10);
  --green: #10b981;
  --green-soft: rgba(16, 185, 129, 0.11);
  --panel-sheen: rgba(255, 255, 255, 0.36);
  --panel-sheen-end: rgba(255, 255, 255, 0.05);
  --hero-tint: rgba(16, 185, 129, 0.045);
  --shadow: 0 18px 52px rgba(73, 57, 43, 0.12);
  --soft-shadow: 0 12px 34px rgba(73, 57, 43, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --canvas: #111211;
    --canvas-deep: #090a09;
    --wallpaper: url("paper-texture-dark.png");
    --wallpaper-wash: rgba(0, 0, 0, 0.12);
    --paper: rgba(40, 40, 37, 0.55);
    --paper-strong: rgba(49, 49, 46, 0.66);
    --ink: #f5f2ec;
    --muted: #b1ada5;
    --soft: #8f8b84;
    --line: rgba(255, 255, 255, 0.25);
    --inner-line: rgba(255, 255, 255, 0.08);
    --accent: #10b981;
    --accent-soft: rgba(16, 185, 129, 0.12);
    --green: #10b981;
    --green-soft: rgba(16, 185, 129, 0.12);
    --panel-sheen: rgba(255, 255, 255, 0.11);
    --panel-sheen-end: rgba(255, 255, 255, 0.015);
    --hero-tint: transparent;
    --shadow: 0 22px 66px rgba(0, 0, 0, 0.34);
    --soft-shadow: 0 14px 38px rgba(0, 0, 0, 0.22);
  }
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
  background: var(--canvas);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background-color: var(--canvas);
  background-image:
    radial-gradient(circle at 8% -4%, var(--accent-soft), transparent 27rem),
    radial-gradient(circle at 94% 20%, var(--green-soft), transparent 24rem),
    linear-gradient(var(--wallpaper-wash), var(--wallpaper-wash)),
    var(--wallpaper);
  background-position: center, center, center, center top;
  background-repeat: no-repeat;
  background-size: auto, auto, cover, cover;
  background-attachment: fixed;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC",
    "PingFang TC", "Hiragino Sans", "Yu Gothic", "Helvetica Neue", sans-serif;
  font-size: 16px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.18;
  background:
    repeating-linear-gradient(7deg, transparent 0 8px, rgba(98, 78, 61, 0.018) 9px 10px),
    repeating-linear-gradient(94deg, transparent 0 13px, rgba(255, 255, 255, 0.025) 14px 15px);
  content: "";
  pointer-events: none;
}

button,
select {
  font: inherit;
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--accent);
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  padding: 8px 13px;
  border-radius: 999px;
  color: #fff;
  background: var(--accent);
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: min(100% - 32px, 980px);
  margin: 0 auto;
  padding: max(18px, env(safe-area-inset-top)) 0 max(22px, env(safe-area-inset-bottom));
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
  padding: 10px 12px 10px 10px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background:
    linear-gradient(135deg, var(--panel-sheen), var(--panel-sheen-end)),
    var(--paper);
  box-shadow: var(--soft-shadow);
  backdrop-filter: blur(24px) saturate(112%);
  -webkit-backdrop-filter: blur(24px) saturate(112%);
}

.brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 11px;
  text-decoration: none;
}

.brand img {
  width: 46px;
  height: 46px;
  flex: 0 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.60);
  border-radius: 13px;
  box-shadow:
    0 8px 18px rgba(49, 38, 29, 0.13),
    0 0 20px color-mix(in srgb, var(--accent) 10%, transparent);
}

.brand-copy {
  min-width: 0;
}

.brand-name {
  display: block;
  overflow: hidden;
  font-size: 15px;
  font-weight: 750;
  letter-spacing: -0.02em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.brand-note {
  display: block;
  color: var(--soft);
  font-size: 12px;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link,
.language-select {
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background:
    linear-gradient(135deg, var(--panel-sheen), var(--panel-sheen-end)),
    var(--paper-strong);
  font-size: 13px;
  font-weight: 650;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  text-decoration: none;
}

.nav-link[aria-current="page"] {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 32%, var(--line));
  background: var(--accent-soft);
}

.language-select {
  max-width: 132px;
  padding: 7px 32px 7px 13px;
  cursor: pointer;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.5vw, 46px);
  border: 1px solid var(--line);
  border-radius: 30px;
  background:
    radial-gradient(circle at 100% 0%, rgba(255, 255, 255, 0.22), transparent 42%),
    linear-gradient(135deg, var(--panel-sheen), var(--panel-sheen-end)),
    linear-gradient(var(--hero-tint), var(--hero-tint)),
    var(--paper);
  box-shadow: var(--shadow);
  backdrop-filter: blur(26px) saturate(112%);
  -webkit-backdrop-filter: blur(26px) saturate(112%);
}

.hero::after {
  position: absolute;
  top: -84px;
  right: -70px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 13%, transparent), transparent 67%);
  content: "";
  pointer-events: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 14px;
  padding: 6px 11px;
  border-radius: 999px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 24%, transparent);
  font-size: 13px;
  font-weight: 730;
}

h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(36px, 6vw, 56px);
  line-height: 1.04;
  letter-spacing: -0.055em;
}

.lead {
  max-width: 720px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: clamp(16px, 2vw, 18px);
  line-height: 1.62;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 18px;
  color: var(--soft);
  font-size: 13px;
}

.highlights {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 18px 0;
}

.highlight {
  min-height: 132px;
  padding: 21px;
  border: 1px solid var(--line);
  border-radius: 23px;
  background:
    linear-gradient(135deg, var(--panel-sheen), var(--panel-sheen-end)),
    var(--paper);
  box-shadow: var(--soft-shadow);
  backdrop-filter: blur(20px) saturate(110%);
  -webkit-backdrop-filter: blur(20px) saturate(110%);
}

.highlight strong {
  display: block;
  margin-bottom: 7px;
  font-size: 16px;
}

.highlight span {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.62;
}

.content {
  display: grid;
  gap: 14px;
}

.card {
  padding: clamp(24px, 5vw, 43px);
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    linear-gradient(135deg, var(--panel-sheen), var(--panel-sheen-end)),
    var(--paper);
  box-shadow: var(--soft-shadow);
  backdrop-filter: blur(24px) saturate(110%);
  -webkit-backdrop-filter: blur(24px) saturate(110%);
}

.section-heading {
  display: flex;
  align-items: center;
  gap: 11px;
  margin: 0 0 20px;
  font-size: clamp(22px, 4vw, 29px);
  line-height: 1.3;
  letter-spacing: -0.025em;
}

.number {
  display: inline-grid;
  width: 31px;
  height: 31px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--accent) 72%, transparent);
  border-radius: 999px;
  color: var(--accent);
  background: color-mix(in srgb, var(--paper-strong) 58%, transparent);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

h3 {
  margin: 25px 0 7px;
  font-size: 17px;
}

p {
  margin: 0 0 14px;
}

p:last-child {
  margin-bottom: 0;
}

ul,
ol {
  margin: 9px 0 15px;
  padding-left: 1.25em;
}

li {
  margin: 8px 0;
  padding-left: 0.22em;
}

.muted {
  color: var(--muted);
}

.data-list {
  overflow: hidden;
  margin-top: 17px;
  border: 1px solid var(--inner-line);
  border-radius: 19px;
  background: color-mix(in srgb, var(--paper-strong) 62%, transparent);
}

.data-row {
  display: grid;
  grid-template-columns: minmax(130px, 0.75fr) minmax(0, 2fr);
  gap: 20px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--inner-line);
}

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

.data-row strong {
  font-size: 15px;
}

.data-row span {
  color: var(--muted);
  font-size: 15px;
}

.notice {
  margin-top: 18px;
  padding: 18px 20px;
  border-radius: 18px;
  background: var(--green-soft);
  border: 1px solid color-mix(in srgb, var(--green) 20%, transparent);
}

.faq-list {
  display: grid;
  gap: 10px;
}

.faq {
  overflow: hidden;
  border: 1px solid var(--inner-line);
  border-radius: 18px;
  background:
    linear-gradient(135deg, var(--panel-sheen), transparent),
    color-mix(in srgb, var(--paper-strong) 62%, transparent);
}

.faq summary {
  position: relative;
  padding: 18px 52px 18px 19px;
  cursor: pointer;
  font-weight: 680;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  position: absolute;
  top: 50%;
  right: 20px;
  color: var(--accent);
  content: "+";
  font-size: 22px;
  font-weight: 400;
  transform: translateY(-50%);
}

.faq[open] summary::after {
  content: "−";
}

.faq-answer {
  padding: 0 19px 18px;
  color: var(--muted);
}

.contact-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 18px;
  padding: 21px;
  border: 1px solid var(--line);
  border-radius: 21px;
  background:
    linear-gradient(135deg, var(--panel-sheen), var(--panel-sheen-end)),
    var(--paper-strong);
}

.contact-card strong,
.contact-card span {
  display: block;
}

.contact-card span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 14px;
}

.mail-button {
  min-height: 44px;
  flex: 0 0 auto;
  padding: 10px 18px;
  border: 1px solid rgba(255, 255, 255, 0.36);
  border-radius: 999px;
  color: #fff;
  background: var(--accent);
  box-shadow:
    0 8px 20px color-mix(in srgb, var(--accent) 24%, transparent),
    0 0 18px color-mix(in srgb, var(--accent) 12%, transparent);
  cursor: pointer;
  font-size: 14px;
  font-weight: 730;
}

.mail-button:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
}

.footer {
  padding: 28px 8px 8px;
  color: var(--soft);
  text-align: center;
  font-size: 13px;
}

.footer p {
  margin: 4px 0;
}

[hidden] {
  display: none !important;
}

@media (max-width: 720px) {
  .shell {
    width: min(100% - 20px, 980px);
  }

  .topbar {
    align-items: flex-start;
  }

  .top-actions {
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .brand-note,
  .nav-link:not([aria-current="page"]) {
    display: none;
  }

  .highlights {
    grid-template-columns: 1fr;
  }

  .highlight {
    min-height: auto;
  }

  .data-row {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .contact-card {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 440px) {
  .brand-name {
    max-width: 92px;
  }

  .language-select {
    width: 118px;
  }

  .hero {
    border-radius: 27px;
  }

  .card {
    border-radius: 23px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}

@media print {
  body {
    background: #fff;
  }

  body::before,
  .topbar,
  .mail-button {
    display: none;
  }

  .shell {
    width: 100%;
  }

  .hero,
  .card,
  .highlight {
    break-inside: avoid;
    box-shadow: none;
    background: #fff;
  }
}