/* =========================================================
   联系我们 —— 页面专属样式（作用域 .page-contact）
   ========================================================= */

.page-contact {
  --pc-shadow: 9px 9px 0 var(--ink-900);
  --pc-shadow-lg: 14px 14px 0 var(--ink-900);
  display: block;
  background: var(--paper);
  color: var(--graphite);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-contact .mono {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  padding: clamp(20px, 3vw, 34px) 0 clamp(52px, 8vw, 96px);
  background:
    radial-gradient(ellipse 68% 55% at 80% 10%, rgba(79, 227, 208, 0.20), transparent 70%),
    radial-gradient(ellipse 45% 42% at 3% 96%, rgba(233, 181, 74, 0.13), transparent 72%),
    var(--ink-900);
  color: var(--frost);
  overflow: hidden;
}

.page-contact .contact-hero__shell {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: var(--fs-14);
  color: rgba(251, 253, 252, 0.6);
  margin-bottom: clamp(26px, 4.5vw, 48px);
}

.page-contact .contact-hero .breadcrumb a {
  color: var(--aurora-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-contact .contact-hero .breadcrumb a:hover,
.page-contact .contact-hero .breadcrumb a:focus-visible {
  color: var(--aurora);
  border-bottom-color: var(--aurora);
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 56px);
  align-items: center;
}

.page-contact .contact-hero__eyebrow {
  margin: 0 0 16px;
  font-size: var(--fs-12);
  letter-spacing: 0.18em;
  color: var(--aurora);
  text-transform: uppercase;
}

.page-contact .contact-hero h1 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 5.4vw, 4rem);
  line-height: 1.14;
  letter-spacing: 0.02em;
  color: var(--frost);
}

.page-contact .contact-hero__lead {
  margin: 0 0 30px;
  max-width: 48ch;
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.8;
  color: rgba(251, 253, 252, 0.78);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .contact-hero__figure {
  margin: 0;
  border: var(--border-w) solid rgba(79, 227, 208, 0.4);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-950);
  box-shadow: 12px 12px 0 rgba(79, 227, 208, 0.2);
}

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

.page-contact .contact-hero .figure__caption {
  padding: 12px 16px;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: rgba(251, 253, 252, 0.58);
  background: rgba(6, 16, 25, 0.72);
  border-top: 1px solid rgba(79, 227, 208, 0.18);
}

/* ---------- 锚点导航条 ---------- */

.page-contact .contact-anchors {
  background: var(--ink-950);
  border-bottom: 1px solid rgba(79, 227, 208, 0.22);
}

.page-contact .contact-anchors__inner {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 0;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-contact .contact-anchors__inner::-webkit-scrollbar {
  display: none;
}

.page-contact .contact-anchors__label {
  flex: 0 0 auto;
  padding-right: 12px;
  margin-right: 6px;
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--gold);
  border-right: 1px solid rgba(233, 181, 74, 0.32);
}

.page-contact .contact-anchors a {
  flex: 0 0 auto;
  padding: 6px 12px;
  font-size: var(--fs-14);
  color: rgba(251, 253, 252, 0.72);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-contact .contact-anchors a:hover,
.page-contact .contact-anchors a:focus-visible {
  color: var(--aurora);
  border-color: rgba(79, 227, 208, 0.42);
}

/* ---------- 通用章节头 ---------- */

.page-contact .section-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: clamp(26px, 4vw, 42px);
}

.page-contact .section-head h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 3.4vw, 2.2rem);
  line-height: 1.26;
  letter-spacing: 0.01em;
  color: var(--ink-900);
}

.page-contact .section-head p {
  margin: 0;
  max-width: 62ch;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--slate);
}

.page-contact .contact-region h2,
.page-contact .contact-supply h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 3.4vw, 2.2rem);
  line-height: 1.26;
  color: var(--ink-900);
}

/* ---------- 01 联系卡片 ---------- */

.page-contact .contact-channels {
  padding-block: clamp(48px, 7vw, 88px);
  background: var(--paper);
}

.page-contact .channel-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-contact .channel-card {
  position: relative;
  padding: clamp(22px, 3vw, 30px);
  background: var(--frost);
  border: var(--border-w) solid var(--ink-900);
  border-radius: var(--radius);
  box-shadow: var(--pc-shadow);
  transition: transform var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 5px;
  border-radius: calc(var(--radius) - 2px) calc(var(--radius) - 2px) 0 0;
}

.page-contact .channel-card--mail::before { background: var(--aurora); }
.page-contact .channel-card--tel::before { background: var(--gold); }
.page-contact .channel-card--addr::before { background: var(--maple); }

.page-contact .channel-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--pc-shadow-lg);
}

.page-contact .channel-card__tag {
  margin: 0 0 10px;
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--slate);
}

.page-contact .channel-card h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-22);
  color: var(--ink-900);
}

.page-contact .channel-card__desc {
  margin: 0 0 18px;
  font-size: var(--fs-16);
  line-height: 1.76;
  color: var(--graphite);
}

.page-contact .channel-card__note {
  margin: 16px 0 0;
  padding-top: 14px;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--slate);
  border-top: 1px dashed var(--paper-line);
}

/* ---------- 复制行 ---------- */

.page-contact .copy-line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 10px 10px 12px;
  background: var(--paper);
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-sm);
}

.page-contact .copy-line__key {
  flex: 0 0 auto;
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--slate);
}

.page-contact .copy-line__val {
  flex: 1 1 auto;
  min-width: 0;
  font-size: var(--fs-14);
  color: var(--ink-900);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .copy-btn {
  flex: 0 0 auto;
  padding: 6px 12px;
  font-family: var(--font-body);
  font-size: var(--fs-12);
  color: var(--ink-900);
  background: var(--aurora-soft);
  border: 1px solid var(--ink-900);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.page-contact .copy-btn:hover {
  background: var(--aurora);
}

.page-contact .copy-btn:active {
  transform: translateY(1px);
}

.page-contact .copy-btn.is-done {
  background: var(--gold);
  color: var(--ink-950);
  border-color: var(--ink-950);
}

/* ---------- 02 时机 ---------- */

.page-contact .contact-timing {
  padding-block: clamp(48px, 7vw, 88px);
  background: var(--ink-900);
  color: var(--frost);
}

.page-contact .contact-timing__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 56px);
  align-items: start;
}

.page-contact .contact-timing h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 3.4vw, 2.2rem);
  line-height: 1.26;
  color: var(--frost);
}

.page-contact .contact-timing__intro p {
  margin: 0 0 14px;
  max-width: 56ch;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: rgba(251, 253, 252, 0.76);
}

.page-contact .contact-timing__intro p:last-child {
  margin-bottom: 0;
}

.page-contact .timing-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(79, 227, 208, 0.24);
}

.page-contact .timing-list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(79, 227, 208, 0.16);
}

.page-contact .timing-list__key {
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: rgba(251, 253, 252, 0.55);
}

.page-contact .timing-list__val {
  font-size: var(--fs-18);
  font-weight: 700;
  color: var(--aurora);
  overflow-wrap: anywhere;
}

.page-contact .timing-list__desc {
  margin: 2px 0 0;
  font-size: var(--fs-14);
  line-height: 1.72;
  color: rgba(251, 253, 252, 0.68);
}

/* ---------- 03 咨询准备 ---------- */

.page-contact .contact-topics {
  padding-block: clamp(48px, 7vw, 88px);
  background: var(--paper);
}

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

.page-contact .topic-item {
  background: var(--frost);
  border: var(--border-w) solid var(--ink-900);
  border-radius: var(--radius);
  box-shadow: 5px 5px 0 var(--paper-line);
  overflow: hidden;
}

.page-contact .topic-item summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-18);
  line-height: 1.4;
  color: var(--ink-900);
  cursor: pointer;
  list-style: none;
  transition: background var(--t-fast) var(--ease);
}

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

.page-contact .topic-item summary:hover {
  background: rgba(79, 227, 208, 0.09);
}

.page-contact .topic-item__num {
  flex: 0 0 auto;
  padding: 3px 8px;
  font-size: var(--fs-12);
  color: var(--aurora);
  background: var(--ink-900);
  border-radius: var(--radius-sm);
}

.page-contact .topic-item__title {
  flex: 1 1 auto;
  min-width: 0;
}

.page-contact .topic-item__chev {
  flex: 0 0 auto;
  width: 11px;
  height: 11px;
  border-right: 2px solid var(--ink-900);
  border-bottom: 2px solid var(--ink-900);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform var(--t-base) var(--ease);
}

.page-contact .topic-item[open] .topic-item__chev {
  transform: rotate(-135deg) translate(-2px, -2px);
}

.page-contact .topic-item__body {
  padding: 18px 20px 24px;
  border-top: 1px dashed var(--paper-line);
  background: rgba(244, 238, 227, 0.55);
}

.page-contact .topic-item__body p {
  margin: 0 0 12px;
  max-width: 62ch;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--graphite);
}

.page-contact .topic-item__body p:last-of-type {
  margin-bottom: 0;
}

.page-contact .topic-item__body a {
  color: var(--ink-900);
  text-decoration: none;
  border-bottom: 1.5px solid var(--aurora);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-contact .topic-item__body a:hover {
  color: var(--maple);
  border-bottom-color: var(--maple);
}

.page-contact .topic-item__body .topic-item__tpl {
  margin: 16px 0 0;
  max-width: 100%;
  padding: 10px 14px;
  font-size: var(--fs-12);
  line-height: 1.72;
  color: var(--aurora-soft);
  background: var(--ink-900);
  border-left: 3px solid var(--aurora);
  border-radius: var(--radius-sm);
  overflow-wrap: anywhere;
}

/* ---------- 04 邮件流程 ---------- */

.page-contact .contact-mailflow {
  padding-block: clamp(48px, 7vw, 88px);
  background: var(--ink-950);
  color: var(--frost);
}

.page-contact .contact-mailflow__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 52px);
  align-items: start;
}

.page-contact .contact-mailflow__media .figure {
  margin: 0;
  border: var(--border-w) solid rgba(79, 227, 208, 0.32);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-900);
  box-shadow: 10px 10px 0 rgba(79, 227, 208, 0.14);
}

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

.page-contact .contact-mailflow .figure__caption {
  padding: 12px 16px;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: rgba(251, 253, 252, 0.58);
  background: rgba(6, 16, 25, 0.7);
  border-top: 1px solid rgba(79, 227, 208, 0.16);
}

.page-contact .contact-mailflow h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 3.4vw, 2.2rem);
  line-height: 1.26;
  color: var(--frost);
}

.page-contact .contact-mailflow__copy > p {
  margin: 0 0 6px;
  max-width: 56ch;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: rgba(251, 253, 252, 0.74);
}

.page-contact .mailflow-steps {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
}

.page-contact .mailflow-steps li {
  position: relative;
  margin-left: 15px;
  padding: 0 0 26px 40px;
  border-left: 1px solid rgba(79, 227, 208, 0.26);
}

.page-contact .mailflow-steps li:last-child {
  padding-bottom: 4px;
  border-left-color: transparent;
}

.page-contact .mailflow-steps__num {
  position: absolute;
  left: -16px;
  top: -2px;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  font-size: var(--fs-12);
  line-height: 1;
  color: var(--aurora);
  background: var(--ink-950);
  border: var(--border-w) solid var(--aurora);
  border-radius: 50%;
}

.page-contact .mailflow-steps h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-18);
  color: var(--frost);
}

.page-contact .mailflow-steps p {
  margin: 0;
  max-width: 54ch;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: rgba(251, 253, 252, 0.7);
}

/* ---------- 05 合作供稿 ---------- */

.page-contact .contact-supply {
  position: relative;
  padding-block: clamp(48px, 6.5vw, 84px);
  background: var(--paper);
}

.page-contact .contact-supply::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background: repeating-linear-gradient(
    90deg,
    var(--aurora) 0 48px,
    var(--gold) 48px 96px,
    var(--maple) 96px 144px,
    var(--ink-900) 144px 192px
  );
}

.page-contact .contact-supply__inner p {
  margin: 0 0 14px;
  max-width: 66ch;
  font-size: var(--fs-16);
  line-height: 1.82;
  color: var(--graphite);
}

.page-contact .contact-supply__inner p:last-of-type {
  margin-bottom: 0;
}

.page-contact .contact-supply__inner a {
  color: var(--ink-900);
  text-decoration: none;
  border-bottom: 1.5px solid var(--gold);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-contact .contact-supply__inner a:hover {
  color: var(--maple);
  border-bottom-color: var(--maple);
}

.page-contact .supply-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 06 地区与备案 ---------- */

.page-contact .contact-region {
  padding-block: clamp(44px, 6vw, 76px);
  background: var(--paper);
  border-top: 1px solid var(--paper-line);
}

.page-contact .contact-region p {
  margin: 0;
  max-width: 60ch;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--slate);
}

.page-contact .contact-region__facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: 26px;
  border-top: 1.5px solid var(--ink-900);
}

.page-contact .contact-region__facts > div {
  padding: 18px 0;
  border-bottom: 1px solid var(--paper-line);
}

.page-contact .contact-region__facts span {
  display: block;
  margin-bottom: 6px;
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--slate);
}

.page-contact .contact-region__facts strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-18);
  line-height: 1.4;
  color: var(--ink-900);
  overflow-wrap: anywhere;
}

/* ---------- 收口 ---------- */

.page-contact .contact-closing {
  padding-block: clamp(36px, 5vw, 56px);
  background: linear-gradient(135deg, var(--ink-900) 0%, var(--ink-950) 100%);
  color: var(--frost);
}

.page-contact .contact-closing__inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
}

.page-contact .contact-closing p {
  margin: 0;
  max-width: 34ch;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.1rem, 2.2vw, 1.5rem);
  line-height: 1.42;
  color: var(--frost);
}

.page-contact .contact-closing__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */

@media (min-width: 700px) {
  .page-contact .section-head {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }

  .page-contact .timing-list li {
    grid-template-columns: 132px 176px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }

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

  .page-contact .contact-region__facts > div {
    padding: 20px 24px 20px 0;
    border-bottom: 0;
    border-right: 1px solid var(--paper-line);
  }

  .page-contact .contact-region__facts > div:last-child {
    border-right: 0;
    padding-right: 0;
  }

  .page-contact .contact-closing__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
  }
}

@media (min-width: 860px) {
  .page-contact .channel-cards {
    grid-template-columns: 1.04fr 0.93fr 1.13fr;
    gap: 22px;
    align-items: start;
  }

  .page-contact .channel-card:nth-child(1) { margin-top: 0; }
  .page-contact .channel-card:nth-child(2) { margin-top: 44px; }
  .page-contact .channel-card:nth-child(3) { margin-top: 16px; }

  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }

  .page-contact .contact-hero__figure {
    transform: translateY(-14px);
  }

  .page-contact .contact-timing__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: 56px;
  }

  .page-contact .contact-mailflow__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: 48px;
  }
}

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

  .page-contact .contact-hero__figure {
    transform: none;
  }
}
<<<END>>>