:root {
  --ink: #0e0e0d;
  --ink2: #161614;
  --silk: #f2ede4;
  --silk2: #d4ccbc;
  --gold: #b8955a;
  --gold2: #d4aa6a;
  --border: rgba(184, 149, 90, 0.35);
  --border2: rgba(184, 149, 90, 0.18);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--silk);
  background: radial-gradient(circle at 15% 10%, rgba(184, 149, 90, 0.12), transparent 40%),
    radial-gradient(circle at 85% 90%, rgba(184, 149, 90, 0.1), transparent 45%),
    var(--ink);
}

.apply-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 36px 20px;
}

.apply-card {
  width: min(860px, 100%);
  background: linear-gradient(145deg, rgba(22, 22, 20, 0.96), rgba(14, 14, 13, 0.96));
  border: 1px solid var(--border2);
  padding: 44px 48px;
  position: relative;
}

.apply-card::before {
  content: "";
  position: absolute;
  inset: 16px;
  border: 1px solid var(--border);
  pointer-events: none;
}

.back-link {
  color: var(--silk2);
  text-decoration: none;
  font-size: 12px;
  letter-spacing: 0.16em;
}

.label {
  margin-top: 18px;
  color: var(--gold);
  font-size: 10px;
  letter-spacing: 0.4em;
}

h1 {
  font-family: "Noto Serif SC", "Songti SC", serif;
  font-weight: 300;
  letter-spacing: 0.1em;
  margin: 16px 0 14px;
  font-size: clamp(30px, 5vw, 46px);
}

.lead {
  color: var(--silk2);
  line-height: 2;
  letter-spacing: 0.04em;
  margin-bottom: 28px;
}

.mail-box {
  border: 1px solid var(--border2);
  padding: 20px 22px;
  margin-bottom: 26px;
  background: rgba(255, 255, 255, 0.01);
}

.mail-title {
  color: var(--gold);
  font-size: 11px;
  letter-spacing: 0.25em;
  margin-bottom: 12px;
}

.mail-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.mail-value {
  font-size: 15px;
  letter-spacing: 0.05em;
  color: var(--silk);
}

.requirements {
  border-top: 1px solid var(--border2);
  border-bottom: 1px solid var(--border2);
  padding: 24px 0;
}

.requirements h2 {
  margin: 0 0 14px;
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--silk2);
}
.requirements-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.requirements-head h2 {
  margin-bottom: 0;
}

.requirements ol {
  margin: 0;
  padding-left: 22px;
  color: var(--silk2);
}

.requirements li {
  line-height: 2.2;
  letter-spacing: 0.04em;
}

.note {
  margin: 22px 0 30px;
  color: var(--silk2);
  line-height: 2;
  letter-spacing: 0.04em;
}

.send-mail-btn,
.copy-email-btn {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--gold);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  font-size: 12px;
  letter-spacing: 0.2em;
  cursor: pointer;
  transition: all 0.3s;
}

.send-mail-btn:hover,
.copy-email-btn:hover {
  background: var(--gold);
  color: var(--ink);
  border-color: var(--gold);
}

.send-mail-btn {
  min-width: 210px;
}

.copy-email-btn.is-copied {
  color: var(--silk);
  border-color: var(--gold2);
}

.apply-tips {
  margin-top: 18px;
  text-align: center;
  font-size: 11px;
  line-height: 2;
  letter-spacing: 0.15em;
  color: rgba(242, 237, 228, 0.65);
}

@media (max-width: 768px) {
  .apply-card {
    padding: 30px 22px;
  }

  .apply-card::before {
    inset: 10px;
  }

  .send-mail-btn {
    width: 100%;
  }
  .requirements-head .copy-email-btn {
    width: 100%;
  }
}