.page-contact {
  --co-gap: clamp(14px, 2.4vw, 26px);
  --co-pad: clamp(20px, 3.4vw, 40px);
  background: var(--ink);
  color: var(--mist);
}

.page-contact img {
  max-width: 100%;
  display: block;
}

.page-contact h1,
.page-contact h2,
.page-contact h3 {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--paper);
}

.page-contact h2 {
  font-size: clamp(25px, 4.4vw, 42px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  margin: 10px 0 12px;
}

.page-contact .section {
  padding-block: clamp(38px, 6vw, 76px);
}

.page-contact .contact-masthead {
  padding-top: clamp(18px, 4vw, 38px);
  padding-bottom: 10px;
}

.page-contact a:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  display: grid;
  gap: clamp(22px, 4vw, 46px);
  padding-top: clamp(10px, 2.6vw, 26px);
  padding-bottom: clamp(34px, 5.5vw, 68px);
}

.page-contact h1 {
  font-size: clamp(38px, 9vw, 76px);
  line-height: 0.94;
  letter-spacing: -0.02em;
  margin: 12px 0 16px;
}

.page-contact .hero-lead {
  font-size: clamp(15px, 2.2vw, 17px);
  line-height: 1.8;
  color: var(--steel);
  max-width: 48ch;
  margin: 0;
}

.page-contact .direct-lines {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .direct-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 15px 0 15px 14px;
  border-bottom: 1px solid var(--line);
  border-left: 2px solid transparent;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-contact .direct-item:hover {
  border-left-color: var(--lime);
  background: var(--surface);
}

.page-contact .direct-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--steel-dim);
}

.page-contact .direct-value {
  font-family: var(--font-mono);
  font-size: clamp(16px, 3.2vw, 22px);
  line-height: 1.4;
  color: var(--paper);
  word-break: break-all;
}

.page-contact .hero-visual {
  margin: 0;
  position: relative;
  border: 1px solid var(--line);
  background: var(--surface);
  overflow: hidden;
}

.page-contact .hero-visual img,
.page-contact .address-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-contact .hero-visual::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 76px;
  height: 4px;
  background: var(--lime);
}

/* ---------- 合作类型 ---------- */
.page-contact .coop-head {
  max-width: 64ch;
  margin-bottom: clamp(22px, 3.6vw, 38px);
}

.page-contact .section-lead {
  color: var(--steel);
  line-height: 1.78;
  font-size: 15px;
  max-width: 62ch;
  margin: 0;
}

.page-contact .coop-grid {
  display: grid;
  gap: var(--co-gap);
}

.page-contact .coop-card {
  padding: 20px 18px 22px;
  border: 1px solid var(--line);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-contact .coop-card:hover {
  border-color: var(--steel-dim);
}

.page-contact .coop-card h3 {
  font-size: clamp(19px, 2.8vw, 25px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  margin: 14px 0 10px;
}

.page-contact .coop-card p {
  color: var(--steel);
  font-size: 14.5px;
  line-height: 1.75;
  margin: 0;
}

.page-contact .coop-need {
  list-style: none;
  margin: 14px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 8px;
}

.page-contact .coop-need li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--mist-2);
}

.page-contact .coop-need li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 7px;
  height: 1px;
  background: var(--lime);
}

/* ---------- 邮件写法 ---------- */
.page-contact .mail-how-grid {
  display: grid;
  gap: var(--co-gap);
}

.page-contact .steps {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-contact .steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 13px 2px;
  border-bottom: 1px solid var(--line);
  color: var(--mist-2);
  font-size: 15px;
  line-height: 1.7;
}

.page-contact .step-num {
  color: var(--lime);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-contact .mail-sample {
  border: 1px solid var(--line);
  border-left: 4px solid var(--orange);
  background: var(--surface-2);
  padding: 20px 18px;
}

.page-contact .sample-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
  margin: 0 0 10px;
}

.page-contact .sample-subject {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  margin: 0 0 12px;
  word-break: break-word;
}

.page-contact .sample-note {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--steel);
  margin: 0;
}

/* ---------- 响应安排 ---------- */
.page-contact .hours-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: var(--co-pad);
  display: grid;
  gap: clamp(20px, 3vw, 36px);
}

.page-contact .hours-text {
  color: var(--steel);
  font-size: 15px;
  line-height: 1.8;
  margin: 0 0 12px;
  max-width: 42ch;
}

.page-contact .queue {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .queue li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: center;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  color: var(--mist-2);
  font-size: 14.5px;
  line-height: 1.6;
}

.page-contact .queue-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink);
  background: var(--lime);
  padding: 3px 8px;
  justify-self: start;
  white-space: nowrap;
}

.page-contact .queue li:last-child .queue-tag {
  background: var(--orange);
}

/* ---------- 通信地址 ---------- */
.page-contact .address-panel {
  position: relative;
  border: 1px solid var(--line);
  background: var(--surface);
  overflow: hidden;
  display: grid;
}

.page-contact .address-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 36px 36px;
  opacity: 0.6;
  pointer-events: none;
}

.page-contact .address-panel::after {
  content: "";
  position: absolute;
  top: -90px;
  right: -70px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(201, 255, 61, 0.16), transparent 70%);
  pointer-events: none;
}

.page-contact .address-copy {
  position: relative;
  z-index: 1;
  padding: var(--co-pad);
}

.page-contact .address-line {
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.6vw, 20px);
  line-height: 1.75;
  color: var(--paper);
  margin: 4px 0 14px;
  max-width: 26ch;
}

.page-contact .address-note {
  color: var(--steel);
  font-size: 14.5px;
  line-height: 1.8;
  margin: 0;
  max-width: 46ch;
}

.page-contact .address-visual {
  position: relative;
  z-index: 1;
  margin: 0;
  border-top: 1px solid var(--line);
  background: var(--ink);
}

/* ---------- 反馈纠错 ---------- */
.page-contact .fix-grid {
  display: grid;
  gap: var(--co-gap);
}

.page-contact .fix-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .fix-list li {
  position: relative;
  padding-left: 20px;
  color: var(--mist-2);
  font-size: 14.5px;
  line-height: 1.65;
}

.page-contact .fix-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--orange);
}

.page-contact .tpl {
  margin: 0;
  background: var(--ink);
  border: 1px solid var(--line);
  border-top: 3px solid var(--lime);
  padding: 18px 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.95;
  color: var(--mist-2);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
}

/* ---------- 场景折叠 ---------- */
.page-contact .scene-list {
  margin-top: 20px;
  border-top: 1px solid var(--line);
}

.page-contact .scene {
  border-bottom: 1px solid var(--line);
}

.page-contact .scene summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 4px;
  font-size: 15.5px;
  line-height: 1.5;
  font-weight: 600;
  color: var(--mist);
  transition: color 0.2s ease;
}

.page-contact .scene summary::-webkit-details-marker {
  display: none;
}

.page-contact .scene summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--lime);
}

.page-contact .scene[open] summary::after {
  content: "−";
}

.page-contact .scene summary:hover {
  color: var(--lime);
}

.page-contact .scene p {
  margin: 0;
  padding: 0 4px 18px;
  color: var(--steel);
  font-size: 14.5px;
  line-height: 1.85;
  max-width: 66ch;
}

.page-contact .scene p a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-dark);
}

.page-contact .scene p a:hover {
  border-bottom-color: var(--lime);
}

/* ---------- 关联页面 ---------- */
.page-contact .next-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .next-list a {
  display: block;
  padding: 18px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--paper);
  text-decoration: none;
  font-weight: 600;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-contact .next-list a span {
  display: block;
  margin-top: 8px;
  font-weight: 400;
  font-size: 13px;
  line-height: 1.65;
  color: var(--steel);
}

.page-contact .next-list a:hover {
  border-color: var(--lime);
  background: var(--surface-2);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .next-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .address-panel {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: stretch;
  }

  .page-contact .address-visual {
    border-top: 0;
    border-left: 1px solid var(--line);
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }

  .page-contact .mail-how-grid {
    grid-template-columns: 1.3fr 0.7fr;
    align-items: start;
  }

  .page-contact .hours-panel {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
  }

  .page-contact .fix-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .page-contact .coop-grid {
    grid-template-columns: repeat(12, 1fr);
  }

  .page-contact .coop-card:nth-child(1) {
    grid-column: 1 / 6;
  }

  .page-contact .coop-card:nth-child(2) {
    grid-column: 7 / 13;
    margin-top: 42px;
  }

  .page-contact .coop-card:nth-child(3) {
    grid-column: 2 / 7;
    margin-top: -12px;
  }

  .page-contact .coop-card:nth-child(4) {
    grid-column: 8 / 13;
    margin-top: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact * {
    transition: none !important;
    animation: none !important;
  }
}
<<<END>>>