.page-contact {
  --step-dot: 44px;
  --contact-hair: rgba(215, 220, 214, 0.16);
  --contact-ink-soft: rgba(16, 22, 26, 0.72);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2.25rem, 5.5vw, 4.75rem) 0 clamp(1.75rem, 4vw, 3.25rem);
  background:
    radial-gradient(1100px 520px at 84% -12%, rgba(31, 107, 255, 0.22), transparent 62%),
    radial-gradient(760px 420px at 6% 110%, rgba(255, 122, 33, 0.12), transparent 65%),
    linear-gradient(180deg, var(--night) 0%, var(--night-deep) 100%);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3.25rem);
  align-items: center;
}

.page-contact .contact-hero__copy .breadcrumb {
  margin-bottom: 1.1rem;
}

.page-contact .contact-hero h1 {
  margin: 0.55rem 0 0;
  max-width: 16ch;
  font-size: clamp(1.9rem, 6vw, 3.5rem);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .contact-hero__lead {
  margin: 1.15rem 0 0;
  max-width: 42ch;
  font-size: clamp(0.98rem, 2.2vw, 1.08rem);
  line-height: 1.85;
  color: var(--silver);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.7rem;
}

.page-contact .contact-hero__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-2);
  border: 1px solid var(--contact-hair);
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-contact .contact-hero__media .media__caption {
  padding: 0.7rem 0.2rem 0;
  font-size: 0.8rem;
}

/* ---------- 渠道 + 流程 ---------- */
.page-contact .contact-board__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-contact .contact-board__side {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.page-contact .contact-board__side-title {
  margin: 0.15rem 0 0.4rem;
  font-size: clamp(1.25rem, 3.4vw, 1.7rem);
  font-weight: 900;
  line-height: 1.25;
  color: var(--paper);
  letter-spacing: -0.01em;
}

.page-contact .contact-channel {
  position: relative;
  display: grid;
  gap: 0.55rem;
  overflow: hidden;
  padding: clamp(1.2rem, 3vw, 1.75rem);
  background: var(--paper);
  color: var(--ink);
  border-radius: var(--radius-lg);
}

.page-contact .contact-channel::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 6px;
  background: var(--orange);
}

.page-contact .contact-channel--tel::before {
  background: var(--blue);
}

.page-contact .contact-channel .tag {
  justify-self: start;
  background: rgba(16, 22, 26, 0.07);
  color: var(--contact-ink-soft);
  border-color: transparent;
}

.page-contact .contact-channel__name {
  margin: 0.2rem 0 0;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--contact-ink-soft);
}

.page-contact .contact-channel__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.1rem, 3.6vw, 1.5rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.35;
  color: var(--ink);
  word-break: break-all;
}

.page-contact .contact-channel__value--tel {
  text-decoration: none;
  color: var(--blue-deep);
}

.page-contact .contact-channel__value--tel:hover,
.page-contact .contact-channel__value--tel:focus-visible {
  color: var(--orange);
}

.page-contact .contact-channel__note {
  margin: 0.1rem 0 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--contact-ink-soft);
}

.page-contact .contact-channel__btn {
  justify-self: start;
  margin-top: 0.55rem;
}

.page-contact .contact-board__flow-title {
  margin: 0.15rem 0 0;
  font-size: clamp(1.25rem, 3.4vw, 1.7rem);
  font-weight: 900;
  line-height: 1.25;
  color: var(--paper);
  letter-spacing: -0.01em;
}

.page-contact .contact-steps {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
}

.page-contact .contact-steps__item {
  position: relative;
  display: grid;
  grid-template-columns: var(--step-dot) minmax(0, 1fr);
  gap: 0 1rem;
  align-items: start;
  padding-bottom: 1.5rem;
}

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

.page-contact .contact-steps__item::before {
  content: "";
  position: absolute;
  left: calc(var(--step-dot) / 2 - 1px);
  top: calc(var(--step-dot) + 8px);
  bottom: 4px;
  width: 2px;
  background: linear-gradient(180deg, rgba(31, 107, 255, 0.7), rgba(31, 107, 255, 0.06));
}

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

.page-contact .contact-steps__num {
  width: var(--step-dot);
  height: var(--step-dot);
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--lime);
  color: var(--night);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-contact .contact-steps__body {
  padding-top: 0.15rem;
}

.page-contact .contact-steps__title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .contact-steps__text {
  margin: 0.4rem 0 0;
  font-size: 0.93rem;
  line-height: 1.78;
  color: var(--silver);
}

.page-contact .contact-board__flow-foot {
  margin: 1.6rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--contact-hair);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--silver);
}

.page-contact .contact-board__flow-foot a {
  color: var(--blue);
}

/* ---------- 内容合作 ---------- */
.page-contact .contact-partner {
  background: linear-gradient(180deg, var(--night-deep) 0%, var(--night) 100%);
}

.page-contact .contact-partner__grid {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.75rem);
}

.page-contact .contact-partner__copy h2 {
  margin: 0.35rem 0 0;
  max-width: 22ch;
  font-size: clamp(1.45rem, 4vw, 2.15rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-contact .contact-partner__copy p {
  margin: 1rem 0 0;
  max-width: 44ch;
  font-size: 0.97rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-contact .contact-partner__copy a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .contact-partner__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
  align-content: start;
}

.page-contact .contact-partner__list li {
  padding: 1.05rem 1.2rem;
  border-radius: var(--radius-md);
  background: var(--turf);
  border-left: 4px solid var(--lime);
}

.page-contact .contact-partner__list h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .contact-partner__list p {
  margin: 0.4rem 0 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--silver);
}

/* ---------- 来信准备 ---------- */
.page-contact .contact-prep__grid {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.75rem);
}

.page-contact .contact-prep__copy h2 {
  margin: 0.35rem 0 0;
  max-width: 24ch;
  font-size: clamp(1.4rem, 3.9vw, 2.05rem);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-contact .contact-prep__copy > p {
  margin: 1rem 0 0;
  max-width: 42ch;
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--contact-ink-soft);
}

.page-contact .contact-checklist {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-contact .contact-checklist__item {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.72rem 0.9rem;
  border-radius: var(--radius-sm);
  background: rgba(16, 22, 26, 0.05);
  border: 1px solid rgba(16, 22, 26, 0.11);
  cursor: pointer;
  font-size: 0.93rem;
  line-height: 1.55;
  color: var(--ink);
  transition: background 0.18s ease, border-color 0.18s ease;
}

.page-contact .contact-checklist__item:hover {
  background: rgba(16, 22, 26, 0.085);
  border-color: rgba(16, 22, 26, 0.22);
}

.page-contact .contact-checklist__box {
  appearance: none;
  -webkit-appearance: none;
  flex: none;
  width: 22px;
  height: 22px;
  margin: 0;
  border-radius: 7px;
  border: 2px solid rgba(16, 22, 26, 0.45);
  background: transparent;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: background 0.16s ease, border-color 0.16s ease;
}

.page-contact .contact-checklist__box::after {
  content: "";
  width: 10px;
  height: 5px;
  margin-top: -2px;
  border-left: 2.5px solid #fff;
  border-bottom: 2.5px solid #fff;
  transform: rotate(-45deg) scale(0);
  transition: transform 0.16s ease;
}

.page-contact .contact-checklist__box:checked {
  background: var(--orange);
  border-color: var(--orange);
}

.page-contact .contact-checklist__box:checked::after {
  transform: rotate(-45deg) scale(1);
}

.page-contact .contact-checklist__box:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

.page-contact .contact-prep__foot {
  margin: 1.15rem 0 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--contact-ink-soft);
}

.page-contact .contact-prep__foot a {
  color: var(--blue-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .contact-prep__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-1);
}

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

.page-contact .contact-prep__media .media__caption {
  padding: 0.7rem 0.2rem 0;
  font-size: 0.8rem;
  color: var(--contact-ink-soft);
}

/* ---------- 响应节奏 ---------- */
.page-contact .contact-response__title {
  margin: 0.35rem 0 0;
  max-width: 22ch;
  font-size: clamp(1.4rem, 3.9vw, 2.05rem);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-contact .contact-response__lead {
  margin: 0.8rem 0 0;
  max-width: 44ch;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--silver);
}

.page-contact .contact-response__list {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-contact .contact-response__item {
  padding: 1.2rem 1.3rem 1.35rem;
  border-radius: var(--radius-md);
  background: var(--turf);
  border-top: 3px solid var(--blue);
}

.page-contact .contact-response__item--match {
  border-top-color: var(--orange);
}

.page-contact .contact-response__item--other {
  border-top-color: var(--lime);
}

.page-contact .contact-response__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-contact .contact-response__item h3 {
  margin: 0.5rem 0 0;
  font-size: 1.03rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .contact-response__item p:last-child {
  margin: 0.5rem 0 0;
  font-size: 0.91rem;
  line-height: 1.78;
  color: var(--silver);
}

/* ---------- 通信地址 ---------- */
.page-contact .contact-address__grid {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.5rem);
  align-items: start;
}

.page-contact .contact-address__card {
  position: relative;
  padding: clamp(1.3rem, 3vw, 1.9rem);
  background: var(--paper);
  color: var(--ink);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
}

.page-contact .contact-address__card .eyebrow {
  color: rgba(16, 22, 26, 0.5);
  margin: 0;
}

.page-contact .contact-address__value {
  margin: 0.85rem 0 0;
  font-size: clamp(1.1rem, 3.4vw, 1.45rem);
  font-weight: 900;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-contact .contact-address__note {
  margin: 0.65rem 0 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--contact-ink-soft);
}

.page-contact .contact-address__copy h2 {
  margin: 0;
  max-width: 20ch;
  font-size: clamp(1.35rem, 3.8vw, 1.95rem);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-contact .contact-address__copy p {
  margin: 1rem 0 0;
  max-width: 42ch;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-contact .contact-address__copy a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 末尾备案行 ---------- */
.page-contact .contact-footnote {
  padding: 1.3rem 0 1.5rem;
  background: var(--night-deep);
  border-top: 1px solid var(--contact-hair);
}

.page-contact .contact-footnote p {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-contact .contact-checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 700px) {
  .page-contact {
    --step-dot: 56px;
  }

  .page-contact .contact-steps__num {
    font-size: 0.95rem;
  }
}

@media (min-width: 880px) {
  .page-contact .contact-partner__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-contact .contact-address__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }

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

@media (min-width: 960px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }

  .page-contact .contact-board__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 8fr);
    align-items: start;
  }

  .page-contact .contact-prep__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-checklist__item,
  .page-contact .contact-checklist__box,
  .page-contact .contact-checklist__box::after {
    transition: none;
  }
}