.page-contact .contact-band {
  position: relative;
  background: var(--green);
  color: var(--porcelain);
  overflow: hidden;
}

.page-contact .contact-band::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--amber) 0 26%, var(--gold) 26% 52%, rgba(201, 162, 75, 0) 52%);
}

.page-contact .contact-band::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -80px;
  width: 340px;
  height: 340px;
  background: rgba(201, 162, 75, 0.07);
  transform: rotate(28deg);
  pointer-events: none;
}

.page-contact .contact-band__inner {
  position: relative;
  z-index: 1;
  padding-top: 40px;
  padding-bottom: 40px;
}

.page-contact .contact-band__eyebrow {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-contact .contact-band__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(28px, 7vw, 48px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--porcelain);
  max-width: 17em;
}

.page-contact .contact-band__lead {
  margin: 0 0 28px;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(246, 243, 234, var(--on-dark));
}

.page-contact .contact-band__facts {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 1px;
  border-top: 1px solid rgba(220, 200, 155, 0.28);
}

.page-contact .contact-band__fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 0 14px;
  border-bottom: 1px solid rgba(220, 200, 155, 0.28);
}

.page-contact .contact-band__fact-label {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-contact .contact-band__fact-value {
  font-size: 15px;
  line-height: 1.6;
  color: var(--porcelain);
  word-break: break-word;
}

.page-contact .contact-band__cross {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(246, 243, 234, 0.5);
}

/* ---------- 通用章节 ---------- */
.page-contact .section {
  padding: 56px 0;
}

.page-contact .section__head {
  margin-bottom: 30px;
}

.page-contact .section__index {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--moss);
}

.page-contact .section__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(22px, 5vw, 30px);
  line-height: 1.32;
  letter-spacing: -0.005em;
  color: var(--ink);
}

.page-contact .section__lead {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--moss);
}

/* ---------- 四类通道 ---------- */
.page-contact .channels {
  background: var(--porcelain);
  border-bottom: 1px solid var(--line);
}

.page-contact .channel-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-contact .channel {
  position: relative;
  padding: 26px 22px 24px;
  background: var(--cream);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.page-contact .channel:hover,
.page-contact .channel:focus-within {
  border-color: var(--amber);
  border-left-color: var(--amber);
  box-shadow: var(--shadow-soft);
}

.page-contact .channel__num {
  display: block;
  margin-bottom: 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-contact .channel__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.4;
  color: var(--green);
}

.page-contact .channel__text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.page-contact .channel__how {
  margin: 0 0 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.7;
  color: var(--moss);
}

.page-contact .channel__how-label {
  display: inline-block;
  margin-right: 8px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--state);
}

.page-contact .channel__link {
  display: inline-block;
  font-size: 14px;
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .channel__link:hover,
.page-contact .channel__link:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* ---------- 事前准备 ---------- */
.page-contact .prep {
  background: var(--porcelain);
}

.page-contact .prep__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-contact .prep__aside {
  margin: 18px 0 0;
  padding: 12px 14px;
  border-left: 2px solid var(--gold);
  background: var(--cream);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--moss);
}

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

.page-contact .prep__item {
  display: flex;
  gap: 16px;
  padding: 18px 18px 18px 16px;
  background: var(--cream);
}

.page-contact .prep__mark {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
  padding-top: 3px;
}

.page-contact .prep__body {
  min-width: 0;
}

.page-contact .prep__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.45;
  color: var(--green);
}

.page-contact .prep__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink);
}

/* ---------- 发出之后 ---------- */
.page-contact .rhythm {
  background: var(--cream);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

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

.page-contact .step {
  position: relative;
  padding: 24px 20px 22px;
  background: var(--porcelain);
  border: 1px solid var(--line);
  transition: border-color var(--dur) var(--ease);
}

.page-contact .step:hover {
  border-color: var(--gold);
}

.page-contact .step__num {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--green-deep);
  background: var(--gold);
}

.page-contact .step__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.4;
  color: var(--green);
}

.page-contact .step__text {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink);
}

.page-contact .step__meta {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--moss);
}

.page-contact .rhythm__note {
  margin: 24px 0 0;
  padding: 14px 16px;
  background: rgba(76, 122, 99, 0.09);
  border-left: 3px solid var(--state);
  font-size: 14px;
  line-height: 1.75;
  color: var(--green-deep);
}

/* ---------- 联系方式 ---------- */
.page-contact .reach {
  background: var(--porcelain);
}

.page-contact .reach__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  align-items: start;
}

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

.page-contact .reach__row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .reach__label {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-contact .reach__value {
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .reach__more {
  margin-top: 22px;
  border: 1px solid var(--line);
  background: var(--cream);
}

.page-contact .reach__more summary {
  list-style: none;
  cursor: pointer;
  padding: 15px 44px 15px 18px;
  position: relative;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--green);
}

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

.page-contact .reach__more summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--amber);
}

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

.page-contact .reach__more summary:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: -2px;
}

.page-contact .reach__more-body {
  padding: 0 18px 18px;
  border-top: 1px solid var(--line);
}

.page-contact .reach__more-body p {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink);
}

.page-contact .reach__media {
  border: 1px solid var(--line);
  background: var(--cream);
}

.page-contact .reach__media img,
.page-contact .partners__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 地区协作 ---------- */
.page-contact .partners {
  background: var(--cream);
  border-top: 1px solid var(--line);
}

.page-contact .partners__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: start;
}

.page-contact .partners__media {
  border: 1px solid var(--line);
  background: var(--porcelain);
}

.page-contact .partners__lead {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

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

.page-contact .partners__step {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 15px 4px;
  background: var(--cream);
}

.page-contact .partners__step-num {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
  padding-top: 3px;
}

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

/* ---------- 备案窄条 ---------- */
.page-contact .colophon {
  background: var(--green-deep);
}

.page-contact .colophon__inner {
  padding-top: 20px;
  padding-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-contact .colophon__icp {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-contact .colophon__text {
  margin: 0;
  font-size: 12px;
  line-height: 1.7;
  color: rgba(246, 243, 234, 0.56);
}

/* ---------- 窄屏保护 ---------- */
@media (max-width: 419px) {
  .page-contact .contact-band__title {
    font-size: 26px;
  }

  .page-contact .reach__value {
    font-size: 14px;
  }

  .page-contact .channel,
  .page-contact .step {
    padding-left: 18px;
    padding-right: 18px;
  }
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 700px) {
  .page-contact .contact-band__inner {
    padding-top: 56px;
    padding-bottom: 56px;
  }

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

  .page-contact .contact-band__fact {
    padding-right: 20px;
    border-bottom: 0;
  }

  .page-contact .section {
    padding: 72px 0;
  }

  .page-contact .channel-grid {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 26px;
    row-gap: 26px;
    padding-bottom: 34px;
  }

  .page-contact .channel:nth-child(even) {
    margin-top: 34px;
  }

  .page-contact .prep__grid {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 44px;
    align-items: start;
  }

  .page-contact .rhythm__steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }

  .page-contact .reach__grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 46px;
  }

  .page-contact .reach__row {
    flex-direction: row;
    align-items: baseline;
    gap: 20px;
  }

  .page-contact .reach__label {
    flex: 0 0 92px;
  }

  .page-contact .partners__grid {
    grid-template-columns: 0.92fr 1.08fr;
    gap: 46px;
  }

  .page-contact .colophon__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
  }
}

@media (min-width: 1024px) {
  .page-contact .contact-band__inner {
    padding-top: 68px;
    padding-bottom: 64px;
  }

  .page-contact .contact-band__lead {
    font-size: 17px;
  }

  .page-contact .channel {
    padding: 30px 28px 28px;
  }

  .page-contact .prep__item {
    padding: 22px;
  }

  .page-contact .reach__value {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .channel__link,
  .page-contact .step {
    transition: none;
  }
}