.page-contact {
  display: block;
}

.page-contact .page-contact__crumbs {
  padding-top: clamp(1rem, 3vw, 1.8rem);
}

/* ---------- 首屏 ---------- */
.page-contact .hero {
  padding-top: clamp(1.2rem, 3vw, 2rem);
}

.page-contact .hero__grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.6rem);
  align-items: center;
}

.page-contact .hero__copy h1 {
  margin: 0.6rem 0 1rem;
}

.page-contact .hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.4rem 0 0;
}

.page-contact .hero__media {
  border-radius: var(--r-lg);
  overflow: hidden;
}

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

/* ---------- 渠道 + 流程 ---------- */
.page-contact .channels__grid {
  display: grid;
  gap: clamp(1.8rem, 4vw, 3rem);
}

.page-contact .reach {
  display: grid;
  gap: clamp(1rem, 2.5vw, 1.4rem);
  margin-top: clamp(1.4rem, 3vw, 2rem);
}

.page-contact .reach__card {
  display: block;
  padding: clamp(1.4rem, 3.6vw, 2.2rem);
  border-radius: var(--r-lg);
  background: var(--mk-700);
  color: var(--warm);
  text-decoration: none;
  transition: background 240ms var(--ease), transform 240ms var(--ease);
}

.page-contact .reach__card:hover,
.page-contact .reach__card:focus-visible {
  background: var(--mk-500);
  transform: translateY(-4px);
}

.page-contact .reach__k {
  display: block;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--volt);
}

.page-contact .reach__v {
  display: block;
  margin: 0.7rem 0 0.85rem;
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 3.4vw, 1.6rem);
  line-height: 1.3;
  letter-spacing: 0.02em;
  word-break: break-word;
}

.page-contact .reach__note {
  display: block;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .flow {
  align-self: start;
  padding: clamp(1.4rem, 3.6vw, 2.2rem);
  border-radius: var(--r-lg);
  background: var(--mk-900);
}

.page-contact .flow__title {
  margin: 0 0 1.6rem;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--volt);
}

.page-contact .flow__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .flow__item {
  position: relative;
  padding-left: 3.3rem;
  padding-bottom: 1.9rem;
}

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

.page-contact .flow__item::before {
  content: "";
  position: absolute;
  left: 0.9rem;
  top: 2.1rem;
  bottom: 0;
  width: 2px;
  background: var(--line-300);
}

.page-contact .flow__item:last-child::before {
  display: none;
}

.page-contact .flow__dot {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 1.9rem;
  height: 1.9rem;
  border-radius: 999px;
  border: 2px solid var(--line-300);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--mist);
  transition: background 320ms var(--ease), border-color 320ms var(--ease), color 320ms var(--ease);
}

.page-contact .flow__item.is-in .flow__dot {
  background: var(--volt);
  border-color: var(--volt);
  color: var(--char);
}

.page-contact .flow__h {
  margin: 0 0 0.35rem;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--warm);
}

.page-contact .flow__p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 三类常见问题 ---------- */
.page-contact .topics {
  display: grid;
  gap: clamp(1rem, 2.6vw, 1.6rem);
  margin-top: clamp(1.4rem, 3vw, 2rem);
}

.page-contact .topic {
  padding: clamp(1.3rem, 3.4vw, 2rem);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, var(--mk-700) 0%, var(--mk-900) 100%);
}

.page-contact .topic__idx {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--volt);
}

.page-contact .topic__h {
  margin: 0 0 0.6rem;
  font-size: 1.1rem;
}

.page-contact .topic__p {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .topic-note {
  margin-top: clamp(1.4rem, 3vw, 2rem);
  color: var(--mist);
}

.page-contact .topic-note a,
.page-contact .after-send a,
.page-contact .coop__p a {
  color: var(--volt);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 纠错清单 ---------- */
.page-contact .pick-list {
  display: grid;
  gap: 0.6rem;
  margin-top: clamp(1.2rem, 3vw, 1.8rem);
}

.page-contact .pick {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  padding: 0.95rem 1.15rem;
  border-radius: var(--r-sm);
  background: var(--mk-700);
  cursor: pointer;
  transition: background 200ms var(--ease);
}

.page-contact .pick:hover {
  background: var(--mk-500);
}

.page-contact .pick__box {
  flex: 0 0 auto;
  width: 1.15rem;
  height: 1.15rem;
  margin: 0.28rem 0 0;
  accent-color: var(--volt);
}

.page-contact .pick__text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--mist);
  transition: color 200ms var(--ease);
}

.page-contact .pick__text strong {
  color: var(--warm);
  font-weight: 700;
}

.page-contact .pick__box:checked + .pick__text {
  color: var(--warm);
}

.page-contact .after-send {
  align-self: start;
  padding: clamp(1.4rem, 3.6vw, 2.2rem);
}

.page-contact .after-send__h {
  margin: 0 0 0.8rem;
  font-size: 1.05rem;
  color: var(--volt);
}

.page-contact .after-send__p {
  margin: 0 0 1rem;
  font-size: 0.96rem;
  line-height: 1.75;
  color: var(--warm);
}

.page-contact .after-send__p--last {
  margin-bottom: 0;
  color: var(--mist);
}

/* ---------- 合作 ---------- */
.page-contact .coop {
  display: grid;
  gap: clamp(1rem, 2.6vw, 1.5rem);
  margin-top: clamp(1.4rem, 3vw, 2rem);
}

.page-contact .coop__item {
  padding: clamp(1.3rem, 3.4vw, 1.9rem);
  border-radius: var(--r-md);
  background: var(--mk-700);
  border-left: 4px solid var(--volt-dim);
}

.page-contact .coop__h {
  margin: 0.9rem 0 0.55rem;
  font-size: 1.05rem;
}

.page-contact .coop__p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 通讯地址 ---------- */
.page-contact .address-bar {
  padding: clamp(1.7rem, 4.5vw, 3rem);
  border-radius: var(--r-lg);
  background: var(--mk-700);
  border-top: 6px solid var(--volt);
}

.page-contact .address-bar__k {
  margin: 0;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--volt);
}

.page-contact .address-bar__v {
  margin: 0.9rem 0 1rem;
  font-family: var(--font-mono);
  font-size: clamp(1.1rem, 3.6vw, 1.8rem);
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--warm);
}

.page-contact .address-bar__note {
  margin: 0;
  max-width: 760px;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 回复时效 ---------- */
.page-contact .reply-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-lg);
  background: var(--mk-900);
}

.page-contact .reply-card__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.18;
}

.page-contact .reply-card__inner {
  position: relative;
  padding: clamp(1.7rem, 4.5vw, 3.2rem);
}

.page-contact .reply-card__h {
  margin: 0.6rem 0 1rem;
}

.page-contact .reply-card__lead {
  margin: 0 0 1.4rem;
  max-width: 760px;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--warm);
}

.page-contact .reply-card__list {
  margin: 0 0 1.6rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.7rem;
  max-width: 760px;
}

.page-contact .reply-card__list li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .reply-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62rem;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--volt);
}

.page-contact .reply-card__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 0;
}

/* ---------- 收束色带 ---------- */
.page-contact .volt-band {
  height: 8px;
  margin: clamp(1.6rem, 4vw, 2.8rem) 0 clamp(2rem, 5vw, 3.4rem);
  border-radius: 999px;
  background: linear-gradient(90deg, var(--volt) 0%, var(--volt-dim) 62%, transparent 100%);
}

/* ---------- 响应式 ---------- */
@media (min-width: 780px) {
  .page-contact .reach {
    grid-template-columns: 1fr 1fr;
  }

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

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

@media (min-width: 900px) {
  .page-contact .hero__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: clamp(2rem, 5vw, 4.5rem);
  }

  .page-contact .channels__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-contact .split {
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .reach__card,
  .page-contact .flow__dot,
  .page-contact .pick {
    transition: none;
  }

  .page-contact .reach__card:hover,
  .page-contact .reach__card:focus-visible {
    transform: none;
  }
}
<<<END>>>