.page-contact {
  --contact-line: rgba(74, 88, 114, 0.42);
  --contact-line-soft: rgba(74, 88, 114, 0.2);
}

/* ---------- 首屏框景 ---------- */
.page-contact .contact-hero {
  padding-top: clamp(8px, 1.6vw, 20px);
}

.page-contact .hero-frame {
  position: relative;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  min-height: clamp(340px, 46vw, 480px);
  border: 1px solid var(--contact-line);
  border-radius: var(--radius-lg);
  background: var(--deep);
}

.page-contact .hero-plate {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
  filter: saturate(0.5) brightness(0.5) contrast(1.08);
}

.page-contact .hero-frame::before,
.page-contact .hero-frame::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 12px;
  background-image: repeating-linear-gradient(to bottom, var(--rule) 0 1px, transparent 1px 13px);
  opacity: 0.55;
  pointer-events: none;
}

.page-contact .hero-frame::before { left: 0; }
.page-contact .hero-frame::after { right: 0; }

.page-contact .hero-inner {
  position: relative;
  z-index: 1;
  padding: clamp(28px, 4.5vw, 64px) clamp(24px, 4vw, 60px) clamp(26px, 4vw, 56px);
}

.page-contact .hero-index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .hero-inner h1 {
  margin: 14px 0 0;
  max-width: 20ch;
  font-size: clamp(28px, 5.6vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.page-contact .lede {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: clamp(14px, 1.5vw, 17px);
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 通道条 ---------- */
.page-contact .channel-bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(12px, 1.8vw, 20px);
  overflow: hidden;
  border: 1px solid var(--contact-line);
  border-radius: var(--radius-lg);
  background: var(--contact-line);
}

.page-contact .channel-gate {
  position: relative;
  display: block;
  padding: 20px clamp(20px, 3vw, 28px) 24px;
  background: var(--panel);
  color: var(--text);
  text-decoration: none;
  transition: background var(--dur) ease, box-shadow var(--dur) ease;
}

.page-contact .channel-gate::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 42px;
  background: repeating-linear-gradient(115deg, rgba(34, 231, 200, 0.14) 0 1px, transparent 1px 10px);
  pointer-events: none;
}

.page-contact .channel-gate:hover,
.page-contact .channel-gate:focus-visible {
  background: var(--raise);
  box-shadow: inset 0 0 0 1px var(--cyan);
}

.page-contact .channel-gate:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-contact .gate-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-contact .gate-title {
  display: block;
  margin-top: 10px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-contact .gate-desc {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 先看这里 ---------- */
.page-contact .note-list {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  margin: clamp(20px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .note-item {
  padding-top: 18px;
  border-top: 1px solid var(--contact-line);
}

.page-contact .note-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--yellow);
}

.page-contact .note-title {
  margin: 10px 0 8px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-contact .note-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .note-tail {
  max-width: 70ch;
  margin: clamp(24px, 3vw, 40px) 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--contact-line-soft);
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .note-tail a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 231, 200, 0.4);
}

.page-contact .note-tail a:hover { border-bottom-color: var(--cyan); }

/* ---------- 联系方式 ---------- */
.page-contact .direct-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(24px, 3vw, 40px);
}

.page-contact .direct-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.page-contact .field-row {
  padding: clamp(22px, 3vw, 32px) 0;
  border-top: 1px solid var(--contact-line-soft);
}

.page-contact .field-row:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-contact .field-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-contact .mail-display {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(16px, 2.9vw, 30px);
  letter-spacing: -0.01em;
  color: var(--cyan);
  overflow-wrap: anywhere;
}

.page-contact .phone-display {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(24px, 4.4vw, 42px);
  letter-spacing: 0.02em;
  color: var(--orange);
}

.page-contact .addr-display {
  margin: 0;
  font-size: clamp(17px, 2.2vw, 24px);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .field-note {
  max-width: 56ch;
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 合作与引用 ---------- */
.page-contact .auth-grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(24px, 3vw, 40px);
  overflow: hidden;
  border: 1px solid var(--contact-line);
  border-radius: var(--radius-lg);
  background: var(--contact-line);
}

.page-contact .auth-cell {
  padding: clamp(22px, 3vw, 32px);
  background: var(--panel);
}

.page-contact .auth-cell h3 {
  margin: 0 0 12px;
  font-size: 16px;
  font-weight: 700;
}

.page-contact .auth-cell p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .auth-cell a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 231, 200, 0.4);
}

.page-contact .auth-cell a:hover { border-bottom-color: var(--cyan); }

/* ---------- 纠错清单 ---------- */
.page-contact .corr-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-contact .corr-intro {
  max-width: 46ch;
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .corr-panel {
  padding: clamp(24px, 3.5vw, 44px);
}

.page-contact .check-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: check;
}

.page-contact .check-list li {
  position: relative;
  counter-increment: check;
  padding: 18px 0 18px 54px;
  border-top: 1px solid var(--contact-line-soft);
}

.page-contact .check-list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-contact .check-list li::before {
  content: counter(check, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--yellow);
}

.page-contact .check-list li:first-child::before { top: 0; }

.page-contact .check-list h3 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
}

.page-contact .check-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .corr-tail {
  max-width: 60ch;
  margin: clamp(20px, 2.5vw, 30px) 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--contact-line-soft);
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 收束区 ---------- */
.page-contact .contact-final {
  position: relative;
  padding: clamp(48px, 7vw, 96px) 0;
  border-top: 1px solid var(--contact-line);
  background-image: linear-gradient(180deg, rgba(34, 231, 200, 0.06), rgba(5, 10, 20, 0) 62%);
}

.page-contact .contact-final::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: min(340px, 60%);
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(34, 231, 200, 0));
}

.page-contact .final-grid {
  display: grid;
  gap: clamp(18px, 3vw, 36px);
}

.page-contact .final-rail {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--rule);
}

.page-contact .final-body h2 {
  margin: 0;
  font-size: clamp(22px, 3vw, 32px);
  letter-spacing: -0.02em;
}

.page-contact .final-mail {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(17px, 3.4vw, 38px);
  letter-spacing: -0.01em;
  color: var(--cyan);
  overflow-wrap: anywhere;
}

.page-contact .final-note {
  max-width: 56ch;
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .final-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 22px 0 0;
}

.page-contact .final-links a {
  padding-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .final-links a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-contact .channel-bar {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .field-row {
    display: grid;
    grid-template-columns: 150px minmax(0, 1fr);
    gap: clamp(16px, 3vw, 36px);
  }

  .page-contact .field-label { margin: 4px 0 0; }
}

@media (min-width: 820px) {
  .page-contact .note-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .auth-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .final-grid {
    grid-template-columns: 60px minmax(0, 1fr);
  }
}

@media (min-width: 960px) {
  .page-contact .corr-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-contact .direct-grid {
    grid-template-columns: minmax(240px, 5fr) minmax(0, 8fr);
    align-items: start;
  }
}

@media (max-width: 899px) {
  .page-contact .final-rail { display: none; }
}

@media (max-width: 480px) {
  .page-contact .hero-inner h1 { max-width: none; }
  .page-contact .mail-display,
  .page-contact .final-mail { font-size: 15px; }
  .page-contact .check-list li { padding-left: 44px; }
}