/* newsletter.html 固有スタイル */

.mail-hero {
  background: var(--paper);
  border-bottom: 1.5px solid var(--ink);
  padding: 64px 0;
  text-align: center;
}
.mail-hero-inner { max-width: 640px; margin: 0 auto; padding: 0 32px; }
.mail-hero-logo { display: flex; align-items: flex-end; gap: 12px; justify-content: center; margin-bottom: 20px; }
.mail-hero-logo-name { font-family: var(--serif); font-size: 20px; font-weight: 700; letter-spacing: 0.05em; color: var(--ink); }
.mail-hero-copy { font-family: var(--serif); font-size: 26px; font-weight: 700; color: var(--ink); line-height: 1.6; letter-spacing: 0.03em; margin-bottom: 16px; }
.mail-hero-desc { font-size: 14px; color: var(--ink2); line-height: 2; }

.mail-main { max-width: 920px; margin: 0 auto; padding: 56px 32px; display: grid; grid-template-columns: 1fr 380px; gap: 56px; align-items: start; }

/* Features */
.mail-features { }
.mail-features-title { font-family: var(--serif); font-size: 18px; font-weight: 700; color: var(--ink); margin-bottom: 24px; padding-bottom: 12px; border-bottom: 1.5px solid var(--ink); }
.feature-item { display: flex; gap: 16px; padding: 20px 0; border-bottom: 1px solid var(--border); }
.feature-num { font-family: var(--serif); font-size: 28px; font-weight: 700; color: var(--gold); line-height: 1; flex-shrink: 0; width: 32px; }
.feature-text .title { font-family: var(--serif); font-size: 15px; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.feature-text .desc { font-size: 12.5px; color: var(--ink2); line-height: 1.8; }

/* Sample */
.mail-sample { margin-top: 40px; }
.mail-sample-title { font-family: var(--serif); font-size: 14px; font-weight: 700; color: var(--ink); margin-bottom: 16px; letter-spacing: 0.08em; }
.sample-card { border: 1px solid var(--border); background: white; }
.sample-header { border-top: 2px solid var(--ink); padding: 12px 16px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; }
.sample-header-name { font-family: var(--serif); font-size: 12px; font-weight: 700; letter-spacing: 0.08em; color: var(--ink); }
.sample-header-date { font-size: 9px; color: var(--gray); letter-spacing: 0.1em; }
.sample-body { padding: 16px; }
.sample-eyebrow { font-size: 9px; letter-spacing: 0.2em; color: var(--gold2); margin-bottom: 8px; }
.sample-subj { font-family: var(--serif); font-size: 15px; font-weight: 700; color: var(--ink); margin-bottom: 10px; line-height: 1.5; }
.sample-text { font-size: 11px; color: var(--ink2); line-height: 1.9; }
.sample-more { font-size: 10px; color: var(--gray); margin-top: 10px; letter-spacing: 0.08em; }

/* Form */
.mail-form-wrap { background: var(--ink); padding: 36px 28px; position: sticky; top: 80px; }
.mail-form-title { font-family: var(--serif); font-size: 18px; font-weight: 700; color: white; margin-bottom: 6px; }
.mail-form-desc { font-size: 11.5px; color: #666; line-height: 1.8; margin-bottom: 24px; }
.mail-form { display: flex; flex-direction: column; gap: 12px; }
.mail-form input {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.15);
  color: white;
  font-family: var(--sans);
  font-size: 13px;
  padding: 12px 14px;
  outline: none;
  transition: border-color 0.2s;
}
.mail-form input:focus { border-color: var(--gold); }
.mail-form input::placeholder { color: #555; }
.mail-form-submit {
  background: var(--gold);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  padding: 16px;
  border: none;
  cursor: pointer;
  transition: background 0.2s;
  margin-top: 4px;
}
.mail-form-submit:hover { background: var(--gold2); color: white; }
.mail-form-note { font-size: 10px; color: #ccc; line-height: 2.0; letter-spacing: 0.05em; margin-top: 8px; text-align: center; }

/* Past issues */
.mail-past { max-width: 920px; margin: 0 auto; padding: 0 32px 56px; }
.past-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); }
.past-card { background: white; padding: 20px; cursor: pointer; transition: background 0.15s; }
.past-card:hover { background: var(--paper); }
.past-no { font-size: 9px; letter-spacing: 0.2em; color: var(--gold2); margin-bottom: 8px; }
.past-title { font-family: var(--serif); font-size: 13px; font-weight: 600; color: var(--ink); line-height: 1.6; margin-bottom: 6px; }
.past-date { font-size: 10px; color: var(--gray); }

@media (max-width: 900px) {
  .mail-main { grid-template-columns: 1fr; padding: 40px 24px; }
  .mail-form-wrap { position: static; }
  .past-grid { grid-template-columns: 1fr 1fr; }
  .mail-past { padding: 0 24px 40px; }
}
@media (max-width: 600px) {
  .mail-hero { padding: 40px 0; }
  .mail-hero-copy { font-size: 20px; }
  .mail-main { padding: 32px 16px; }
  .past-grid { grid-template-columns: 1fr; }
  .mail-past { padding: 0 16px 32px; }
}