.page-contact {
  --contact-line: rgba(11, 27, 43, 0.14);
  --contact-line-soft: rgba(11, 27, 43, 0.07);
  --rail: 26px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  padding-bottom: clamp(48px, 8vw, 96px);
  overflow-x: clip;
}

.page-contact h1,
.page-contact h2,
.page-contact h3 {
  font-family: var(--font-display);
  margin: 0;
  text-wrap: balance;
}

.page-contact .sec-title {
  font-size: clamp(23px, 4.2vw, 34px);
  line-height: 1.28;
  letter-spacing: -0.012em;
  font-weight: 700;
  margin-top: 10px;
}

/* 面包屑 */
.page-contact__crumbs {
  padding-top: clamp(16px, 3vw, 28px);
}

.page-contact .crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-contact .crumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--mist);
}

.page-contact .crumbs__item + .crumbs__item::before {
  content: "/";
  color: var(--line-dark-strong);
  font-family: var(--font-mono);
}

.page-contact .crumbs__link {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--line-dark);
  padding-bottom: 1px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .crumbs__link:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

/* 首屏 */
.page-contact .contact-hero {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  padding-top: clamp(22px, 4vw, 42px);
  align-items: center;
}

.page-contact .contact-hero__title {
  font-size: clamp(29px, 6.4vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.018em;
  font-weight: 700;
  margin: 12px 0 0;
}

.page-contact .contact-hero__lede {
  font-family: var(--font-serif);
  font-size: clamp(15px, 2.3vw, 17px);
  line-height: 1.9;
  color: var(--ink-soft);
  margin: 18px 0 0;
  max-width: 44ch;
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-contact .contact-hero__figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--contact-line);
  background: var(--paper-2);
}

.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
}

/* 章节标题条 */
.page-contact .contact-head {
  display: grid;
  gap: 10px;
  max-width: 62ch;
  margin-bottom: clamp(22px, 4vw, 36px);
}

.page-contact .contact-head__note {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
}

/* 三条通道 */
.page-contact .contact-channels {
  padding-block: clamp(30px, 6vw, 64px);
}

.page-contact .contact-board {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: clamp(18px, 3vw, 28px);
}

.page-contact .channel-list::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), var(--contact-line) 44%, var(--contact-line));
}

.page-contact .channel {
  position: relative;
  padding-left: var(--rail);
  padding-bottom: clamp(16px, 3vw, 24px);
  border-bottom: 1px solid var(--contact-line-soft);
}

.page-contact .channel:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px var(--paper);
}

.page-contact .channel__title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-contact .channel__value {
  margin: 8px 0 0;
  font-size: clamp(17px, 2.6vw, 21px);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.008em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  word-break: break-word;
}

.page-contact .channel__desc {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-contact .channel__meta {
  margin: 10px 0 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--orange);
}

/* 深色写信提示面板 */
.page-contact .prep-panel {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  padding: clamp(22px, 4vw, 38px);
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-contact .prep-panel::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -90px;
  width: 230px;
  height: 230px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(18, 183, 190, 0.32), transparent 68%);
  pointer-events: none;
}

.page-contact .prep-panel > * {
  position: relative;
  z-index: 1;
}

.page-contact .prep-panel__title {
  font-size: clamp(20px, 3.4vw, 26px);
  line-height: 1.36;
  letter-spacing: -0.01em;
  color: var(--paper);
}

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

.page-contact .prep-list li {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 12px;
  border-top: 1px solid var(--line-light);
  padding-top: 14px;
}

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

.page-contact .prep-list__n {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan-soft);
  padding-top: 3px;
}

.page-contact .prep-list__k {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-contact .prep-list__v {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 239, 230, 0.76);
}

.page-contact .prep-panel__foot {
  margin: 4px 0 0;
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.8;
  color: var(--cyan-soft);
  border-left: 2px solid var(--amber);
  padding-left: 12px;
}

/* 回复时段 */
.page-contact .contact-hours {
  padding-block: clamp(26px, 5vw, 56px);
}

.page-contact .hours-panel {
  background: var(--paper-2);
  border-radius: var(--radius);
  padding: clamp(22px, 4vw, 40px);
  display: grid;
  gap: clamp(22px, 4vw, 36px);
  align-items: center;
}

.page-contact .hours-panel__lede {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 46ch;
}

.page-contact .week {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 6px;
  margin-top: 20px;
  max-width: 430px;
}

.page-contact .week__day {
  position: relative;
  display: grid;
  gap: 6px;
  align-content: center;
  min-height: 58px;
  padding: 8px 2px;
  border: 1px solid var(--contact-line);
  border-radius: var(--radius-sm);
  background: var(--card);
  text-align: center;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--mist);
  outline: none;
  transition: border-color 0.18s var(--ease);
}

.page-contact .week__day--on {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink);
  font-weight: 700;
}

.page-contact .week__day:focus-visible {
  border-color: var(--cyan);
}

.page-contact .week__mark {
  display: block;
  width: 16px;
  height: 2px;
  margin: 0 auto;
  border-radius: 2px;
  background: currentColor;
  opacity: 0.5;
}

.page-contact .week__tip {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  transform: translate(-50%, 4px);
  width: max-content;
  max-width: 132px;
  padding: 6px 9px;
  border-radius: var(--radius-sm);
  background: var(--ink);
  color: var(--paper);
  font-size: 11px;
  line-height: 1.45;
  letter-spacing: 0.02em;
  text-align: center;
  white-space: normal;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.16s var(--ease), transform 0.16s var(--ease), visibility 0.16s;
  z-index: 4;
}

.page-contact .week__day:hover .week__tip,
.page-contact .week__day:focus-visible .week__tip {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.page-contact .hours-panel__figure {
  margin: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--contact-line);
  background: var(--card);
}

.page-contact .hours-panel__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* 合作来信 */
.page-contact .contact-coop {
  padding-block: clamp(28px, 5vw, 56px);
}

.page-contact .coop-layout {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
}

.page-contact .coop-intro__lede {
  margin: 14px 0 0;
  font-family: var(--font-serif);
  font-size: clamp(15px, 2.3vw, 17px);
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-contact .coop-body__lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-contact .coop-points {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .coop-points li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-contact .coop-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 9px;
  height: 1px;
  background: var(--orange);
}

.page-contact .coop-points strong {
  color: var(--ink);
  font-weight: 700;
}

.page-contact .coop-details {
  margin-top: 20px;
  padding: 14px 16px;
  border: 1px solid var(--contact-line);
  border-radius: var(--radius-sm);
  background: var(--card);
}

.page-contact .coop-details summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  transition: color 0.18s var(--ease);
}

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

.page-contact .coop-details summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--orange);
}

.page-contact .coop-details[open] summary::before {
  content: "−";
}

.page-contact .coop-details summary:hover {
  color: var(--ink-soft);
}

.page-contact .coop-details__body {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-contact .coop-details__sample {
  display: inline-block;
  margin-top: 8px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: var(--paper-2);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  word-break: break-word;
}

.page-contact .coop-details__note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--mist);
}

/* 办公地点与到访 */
.page-contact .contact-visit {
  padding-block: clamp(28px, 5vw, 56px);
}

.page-contact .visit-layout {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  align-items: start;
}

.page-contact .visit-text__lede {
  margin: 14px 0 0;
  font-family: var(--font-serif);
  font-size: clamp(15px, 2.3vw, 17px);
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-contact .visit-points {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .visit-points li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-contact .visit-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  border: 1px solid var(--cyan);
}

.page-contact .visit-points strong {
  color: var(--ink);
  font-weight: 700;
}

.page-contact .visit-meta {
  margin: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-contact .visit-map {
  margin: 0;
  padding: clamp(12px, 2vw, 18px);
  border: 1px solid var(--contact-line);
  border-radius: var(--radius);
  background: var(--card);
}

.page-contact .visit-map__svg {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-contact .visit-map__roads path {
  fill: none;
  stroke: var(--ink);
  stroke-opacity: 0.16;
  stroke-width: 1;
}

.page-contact .visit-map__river {
  fill: none;
  stroke: var(--cyan);
  stroke-opacity: 0.55;
  stroke-width: 2.4;
  stroke-linecap: round;
}

.page-contact .visit-map__halo {
  fill: var(--amber);
  fill-opacity: 0.18;
}

.page-contact .visit-map__dot {
  fill: var(--amber);
  stroke: var(--paper);
  stroke-width: 2;
}

.page-contact .visit-map__cap {
  margin: 10px 0 0;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* 反馈之后 */
.page-contact .contact-after {
  padding-block: clamp(28px, 5vw, 56px);
}

.page-contact .after-panel {
  position: relative;
  overflow: hidden;
  background: var(--ink-soft);
  color: var(--paper);
  border-radius: var(--radius);
  padding: clamp(24px, 4.5vw, 46px);
  display: grid;
  gap: clamp(20px, 3vw, 30px);
}

.page-contact .after-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(244, 239, 230, 0.055) 0 1px, transparent 1px 64px);
  pointer-events: none;
}

.page-contact .after-panel__head,
.page-contact .after-steps,
.page-contact .after-panel__foot {
  position: relative;
  z-index: 1;
}

.page-contact .after-panel .sec-title {
  color: var(--paper);
}

.page-contact .after-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-contact .after-step {
  border-top: 1px solid var(--line-light);
  padding-top: 14px;
}

.page-contact .after-step__n {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-contact .after-step__title {
  margin: 8px 0 0;
  font-size: 16px;
  line-height: 1.5;
  color: var(--paper);
}

.page-contact .after-step__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 239, 230, 0.74);
}

.page-contact .after-panel__foot {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 239, 230, 0.78);
}

.page-contact .after-panel .text-link {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(159, 227, 229, 0.45);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .after-panel .text-link:hover {
  color: var(--amber);
  border-color: var(--amber);
}

/* 相关页面 */
.page-contact .contact-more {
  padding-block: clamp(28px, 5vw, 56px);
}

.page-contact .more-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .more-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 16px;
  border: 1px solid var(--contact-line);
  border-radius: var(--radius-sm);
  background: var(--card);
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.65;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-contact .more-list a:hover {
  border-color: var(--cyan);
  color: var(--ink-soft);
  background: #ffffff;
}

.page-contact .more-list__arrow {
  flex: none;
  font-family: var(--font-mono);
  color: var(--cyan);
}

/* 桌面端 */
@media (min-width: 880px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }

  .page-contact .contact-board {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(32px, 4vw, 56px);
  }

  .page-contact .hours-panel {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    padding-inline: clamp(30px, 4vw, 48px);
  }

  .page-contact .coop-layout {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  }

  .page-contact .visit-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }

  .page-contact .after-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(16px, 2vw, 28px);
  }

  .page-contact .after-step {
    border-top: 0;
    border-left: 1px solid var(--line-light);
    padding: 0 0 0 clamp(14px, 1.6vw, 20px);
  }

  .page-contact .after-step:first-child {
    border-left: 0;
    padding-left: 0;
  }

  .page-contact .more-list {
    max-width: 840px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .week__tip,
  .page-contact .more-list a,
  .page-contact .coop-details summary,
  .page-contact .crumbs__link {
    transition: none;
  }

  .page-contact .week__day:hover .week__tip,
  .page-contact .week__day:focus-visible .week__tip {
    transform: translate(-50%, 0);
  }
}
<<<END>>>