.page-contact {
  --contact-edge: 1px solid var(--line-strong);
  --contact-soft: 1px solid var(--line);
  --contact-pad: clamp(18px, 3vw, 30px);
  background: var(--cream);
  color: var(--ink);
}

.page-contact h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.08;
  letter-spacing: -0.005em;
  margin: 10px 0 0;
}

.page-contact .section__lead {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--ink-70);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 3.5vw, 36px) 0 clamp(38px, 6vw, 74px);
  background: linear-gradient(180deg, rgba(11, 58, 90, .05), rgba(246, 241, 230, 0) 70%);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  right: -8%;
  bottom: -34%;
  width: min(560px, 72%);
  aspect-ratio: 1 / 1;
  background-image:
    repeating-linear-gradient(115deg, rgba(23, 215, 208, .22) 0 1px, transparent 1px 14px),
    repeating-linear-gradient(65deg, rgba(255, 107, 74, .14) 0 1px, transparent 1px 22px);
  -webkit-mask-image: radial-gradient(60% 60% at 50% 50%, #000 0%, transparent 72%);
  mask-image: radial-gradient(60% 60% at 50% 50%, #000 0%, transparent 72%);
  pointer-events: none;
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
  margin-top: clamp(20px, 4vw, 40px);
  max-width: 880px;
}

.page-contact h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 7.2vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.012em;
  margin: 12px 0 0;
  color: var(--ink);
}

.page-contact .contact-hero__lead {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--ink-70);
}

.page-contact .hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

/* ---------- 联系面板 ---------- */

.page-contact .contact-board {
  padding: clamp(34px, 5.5vw, 70px) 0;
  background: var(--paper);
  border-top: var(--contact-soft);
  border-bottom: var(--contact-soft);
}

.page-contact .contact-board__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-contact .channel-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px 16px;
  margin-top: 16px;
  padding: var(--contact-pad);
  background: var(--cream);
  border: var(--contact-edge);
  border-left: 3px solid var(--sea);
  border-radius: var(--radius);
}

.page-contact .channel-card--phone {
  border-left-color: var(--coral);
}

.page-contact .channel-card__icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--mist);
  color: var(--sea);
}

.page-contact .channel-card--phone .channel-card__icon {
  background: rgba(255, 107, 74, .14);
  color: var(--coral);
}

.page-contact .channel-card__icon svg {
  width: 20px;
  height: 20px;
}

.page-contact .channel-card__body {
  min-width: 0;
}

.page-contact .channel-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-20);
  letter-spacing: .01em;
  color: var(--ink);
}

.page-contact .channel-card__text {
  margin: 8px 0 0;
  font-size: var(--fs-14);
  line-height: 1.76;
  color: var(--ink-70);
}

.page-contact .channel-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-strong);
}

.page-contact .channel-line__value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(15px, 2.6vw, 19px);
  letter-spacing: -0.005em;
  color: var(--teal);
  text-decoration: none;
  overflow-wrap: anywhere;
}

.page-contact .channel-line__value:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .copy-btn {
  flex: none;
  padding: 6px 14px;
  font-family: var(--font-index);
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--ink-70);
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  cursor: pointer;
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .copy-btn:hover {
  background: var(--ink);
  color: var(--cyan);
  border-color: var(--ink);
}

.page-contact .copy-btn.is-copied {
  background: var(--cyan);
  color: var(--ink);
  border-color: var(--cyan);
}

.page-contact .contact-board__right {
  display: grid;
  gap: 14px;
}

.page-contact .media__frame {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border: var(--contact-edge);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(23, 215, 208, .18), rgba(11, 58, 90, .07));
}

.page-contact .media__frame img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .media__caption {
  margin: 10px 0 0;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--ink-55);
}

.page-contact .time-chip {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 16px;
  padding: 14px 18px;
  background: var(--ink);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
}

.page-contact .time-chip__key {
  font-family: var(--font-index);
  font-size: var(--fs-12);
  letter-spacing: .12em;
  color: var(--on-dark-dim);
}

.page-contact .time-chip__val {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--fs-14);
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
}

/* ---------- 来信要点 ---------- */

.page-contact .contact-brief {
  padding: clamp(34px, 5.5vw, 70px) 0;
  background: var(--cream);
}

.page-contact .brief-list {
  list-style: none;
  display: grid;
  gap: 1px;
  margin: 24px 0 0;
  padding: 0;
  background: var(--line-strong);
  border: var(--contact-edge);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .brief-item {
  display: grid;
  gap: 4px;
  padding: 16px 18px;
  background: var(--cream);
}

.page-contact .brief-item__key {
  font-family: var(--font-index);
  font-weight: 500;
  font-size: var(--fs-14);
  letter-spacing: .06em;
  color: var(--ink-55);
}

.page-contact .brief-item__val {
  font-size: var(--fs-14);
  line-height: 1.72;
  color: var(--ink-70);
}

/* ---------- 反馈类型标签 ---------- */

.page-contact .fb-tabs {
  position: relative;
  margin-top: 32px;
}

.page-contact .fb-tabs__input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.page-contact .fb-tabs__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.page-contact .fb-tabs__tab {
  display: inline-block;
  padding: 9px 16px;
  font-family: var(--font-index);
  font-size: var(--fs-14);
  color: var(--ink-70);
  background: var(--cream);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  cursor: pointer;
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .fb-tabs__tab:hover {
  border-color: var(--sea);
  color: var(--sea);
}

.page-contact #fb-1:checked ~ .fb-tabs__bar label[for="fb-1"],
.page-contact #fb-2:checked ~ .fb-tabs__bar label[for="fb-2"],
.page-contact #fb-3:checked ~ .fb-tabs__bar label[for="fb-3"],
.page-contact #fb-4:checked ~ .fb-tabs__bar label[for="fb-4"] {
  background: var(--ink);
  color: var(--cyan);
  border-color: var(--ink);
}

.page-contact #fb-1:focus-visible ~ .fb-tabs__bar label[for="fb-1"],
.page-contact #fb-2:focus-visible ~ .fb-tabs__bar label[for="fb-2"],
.page-contact #fb-3:focus-visible ~ .fb-tabs__bar label[for="fb-3"],
.page-contact #fb-4:focus-visible ~ .fb-tabs__bar label[for="fb-4"] {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}

.page-contact .fb-tabs__panels {
  padding: clamp(18px, 3vw, 28px);
  background: var(--ink);
  border-radius: var(--radius);
  border-left: 3px solid var(--cyan);
}

.page-contact .fb-panel {
  display: none;
}

.page-contact #fb-1:checked ~ .fb-tabs__panels .fb-panel--1,
.page-contact #fb-2:checked ~ .fb-tabs__panels .fb-panel--2,
.page-contact #fb-3:checked ~ .fb-tabs__panels .fb-panel--3,
.page-contact #fb-4:checked ~ .fb-tabs__panels .fb-panel--4 {
  display: block;
}

.page-contact .fb-panel__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-20);
  color: var(--cream);
}

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

.page-contact .fb-panel__list li {
  position: relative;
  padding-left: 20px;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--on-dark);
}

.page-contact .fb-panel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 8px;
  height: 2px;
  background: var(--cyan);
}

/* ---------- 答复节奏 ---------- */

.page-contact .contact-cadence {
  padding: clamp(34px, 5.5vw, 70px) 0;
  background: var(--mist);
}

.page-contact .contact-cadence__lead {
  margin: 14px 0 0;
  font-size: var(--fs-14);
  line-height: 1.78;
  color: var(--ink-70);
}

.page-contact .cadence-list {
  list-style: none;
  display: grid;
  gap: 12px;
  margin: 20px 0 0;
  padding: 0;
}

.page-contact .cadence-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  font-size: var(--fs-14);
  line-height: 1.74;
  color: var(--ink-70);
}

.page-contact .cadence-list li::before {
  content: "";
  width: 6px;
  height: 6px;
  margin-top: .64em;
  border-radius: 50%;
  background: var(--coral);
}

.page-contact .contact-cadence .media__frame {
  aspect-ratio: 5 / 3;
}

.page-contact .contact-cadence .media {
  margin: 26px 0 0;
}

/* ---------- 书面材料 ---------- */

.page-contact .contact-postal {
  padding: clamp(34px, 5.5vw, 70px) 0;
  background: var(--cream);
}

.page-contact .postal-card {
  padding: var(--contact-pad);
  background: var(--paper);
  border: var(--contact-edge);
  border-top: 3px solid var(--sea);
  border-radius: var(--radius);
}

.page-contact .contact-list {
  list-style: none;
  display: grid;
  margin: 22px 0 0;
  padding: 0;
  border-top: var(--contact-soft);
}

.page-contact .contact-item {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: var(--contact-soft);
}

.page-contact .contact-item__key {
  font-family: var(--font-index);
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--ink-55);
}

.page-contact .contact-item__val {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--fs-16);
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .postal-note {
  margin: 18px 0 0;
  max-width: 56ch;
  font-size: var(--fs-14);
  line-height: 1.76;
  color: var(--ink-70);
}

/* ---------- 底部色带 ---------- */

.page-contact .contact-band {
  position: relative;
  padding: clamp(28px, 4.5vw, 48px) 0;
  background: var(--ink);
  color: var(--on-dark);
}

.page-contact .contact-band::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan) 0 30%, var(--sea) 30% 68%, var(--coral) 68% 100%);
}

.page-contact .contact-band__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-contact .contact-band__item {
  display: grid;
  gap: 6px;
  align-content: start;
}

.page-contact .contact-band__key {
  font-family: var(--font-index);
  font-size: var(--fs-12);
  letter-spacing: .12em;
  color: var(--on-dark-dim);
}

.page-contact .contact-band__val {
  font-size: var(--fs-16);
  line-height: 1.6;
  color: var(--cream);
}

.page-contact .contact-band__val--mono {
  font-family: var(--font-mono);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.page-contact .contact-band__link {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 10px 20px;
  font-family: var(--font-index);
  font-size: var(--fs-14);
  letter-spacing: .04em;
  color: var(--ink);
  background: var(--cyan);
  border-radius: 999px;
  text-decoration: none;
  transition: background 180ms var(--ease), color 180ms var(--ease);
}

.page-contact .contact-band__link:hover {
  background: var(--cream);
  color: var(--ink);
}

/* ---------- 进入动效 ---------- */

@media (prefers-reduced-motion: no-preference) {
  .page-contact [data-reveal].is-visible {
    animation: contact-rise 420ms var(--ease) both;
  }
}

@keyframes contact-rise {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-contact .brief-item {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 6px 24px;
    align-items: baseline;
  }

  .page-contact .contact-item {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 6px 24px;
    align-items: baseline;
  }
}

@media (min-width: 860px) {
  .page-contact .contact-band__inner {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: center;
    gap: 32px;
  }

  .page-contact .contact-band__item--action {
    justify-items: end;
  }

  .page-contact .contact-cadence .media {
    margin: 0;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-board__grid {
    grid-template-columns: 1.12fr 0.88fr;
    gap: clamp(32px, 4vw, 56px);
  }
}

@media (max-width: 480px) {
  .page-contact .channel-card {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-contact .channel-card__icon {
    width: 34px;
    height: 34px;
  }

  .page-contact .fb-tabs__tab {
    flex: 1 1 auto;
    text-align: center;
  }
}
<<<END>>>