.page-contact {
  --c-pad: clamp(20px, 2.6vw, 32px);
  --c-gap: clamp(16px, 2vw, 24px);
}

.page-contact .section {
  padding-block: clamp(48px, 7vw, 96px);
}

.page-contact h1 {
  margin: 0 0 20px;
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-contact h2 {
  margin: 14px 0 0;
  font-size: clamp(23px, 3.2vw, 34px);
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-contact h3 {
  color: var(--fog);
}

.page-contact img {
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  padding-top: clamp(28px, 4vw, 56px);
  padding-bottom: clamp(24px, 3vw, 40px);
}

.page-contact .contact-hero__head {
  margin-top: clamp(24px, 3.5vw, 44px);
  max-width: 62ch;
}

.page-contact .contact-hero__head .eyebrow {
  display: block;
  margin-bottom: 18px;
}

.page-contact .contact-hero__lead {
  margin: 0 0 28px;
  max-width: 42em;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.85;
  color: var(--silver);
}

.page-contact .contact-hero__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
}

.page-contact .pill {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--line);
  background: var(--ink-800);
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.03em;
  color: var(--fog);
}

.page-contact .pill--violet {
  border-color: rgba(155, 107, 255, 0.55);
  color: #d9c9ff;
}

.page-contact .pill--cyan {
  border-color: rgba(36, 224, 214, 0.5);
  color: #a9f4ef;
}

.page-contact .pill--gold {
  border-color: rgba(242, 184, 75, 0.5);
  color: #ffdc9b;
}

.page-contact .holo-band {
  position: relative;
  margin: clamp(28px, 4vw, 48px) 0 0;
  border: 1px solid var(--line);
  background: var(--ink-850);
  overflow: hidden;
}

.page-contact .holo-band img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1600 / 700;
  object-fit: cover;
}

.page-contact .holo-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(27, 38, 80, 0.6) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 38, 80, 0.6) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.5;
  pointer-events: none;
}

.page-contact .holo-band__caption {
  position: relative;
  z-index: 1;
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  background: var(--ink-900);
  font-size: 13px;
  line-height: 1.6;
  color: var(--silver);
}

.page-contact .holo-band__caption .mono {
  color: var(--cyan);
  margin-right: 6px;
}

/* ---------- 章节头 ---------- */

.page-contact .section-head {
  max-width: 62ch;
  margin-bottom: clamp(26px, 3.6vw, 44px);
}

.page-contact .section-head .eyebrow {
  display: block;
}

.page-contact .section-head__lead {
  margin: 16px 0 0;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: var(--silver);
}

/* ---------- 三条通道 ---------- */

.page-contact .channels {
  display: grid;
  gap: var(--c-gap);
}

.page-contact .channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: var(--c-pad);
  background: linear-gradient(180deg, var(--ink-800), var(--ink-850));
  border: 1px solid var(--line);
  overflow: hidden;
  transition: border-color 0.35s var(--ease), transform 0.35s var(--ease);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 40%, var(--accent-soft) 50%, transparent 60%);
  transform: translateX(-120%);
  transition: transform 0.7s var(--ease);
  pointer-events: none;
}

.page-contact .channel::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent 72%);
}

.page-contact .channel:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.page-contact .channel:hover::before {
  transform: translateX(120%);
}

.page-contact .channel--violet {
  --accent: var(--violet);
  --accent-soft: rgba(155, 107, 255, 0.17);
}

.page-contact .channel--cyan {
  --accent: var(--cyan);
  --accent-soft: rgba(36, 224, 214, 0.15);
}

.page-contact .channel--gold {
  --accent: var(--gold);
  --accent-soft: rgba(242, 184, 75, 0.15);
}

.page-contact .channel__index {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--accent);
}

.page-contact .channel__title {
  margin: 0;
  font-size: 20px;
  letter-spacing: -0.01em;
}

.page-contact .channel__value {
  margin: 0;
  padding: 12px 14px;
  border-left: 2px solid var(--accent);
  background: var(--ink-900);
  font-family: var(--mono);
  font-size: clamp(15px, 1.5vw, 17px);
  letter-spacing: 0.01em;
  color: var(--fog);
  word-break: break-all;
}

.page-contact .channel__actions {
  margin: -4px 0 0;
}

.page-contact .channel .copy-btn {
  align-self: flex-start;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
}

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

.page-contact .channel__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: auto 0 0;
  padding: 16px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-contact .channel__list li {
  padding: 5px 10px;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--silver);
}

/* ---------- 流转 ---------- */

.page-contact .contact-flow__layout {
  display: grid;
  gap: clamp(26px, 3.6vw, 52px);
}

.page-contact .flow-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-850);
  overflow: hidden;
}

.page-contact .flow-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-contact .flow-figure__caption {
  padding: 11px 14px;
  border-top: 1px solid var(--line);
  background: var(--ink-900);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--silver);
}

.page-contact .flow-figure__caption .mono {
  color: var(--violet);
  margin-right: 6px;
}

.page-contact .flow-list {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .flow-item {
  position: relative;
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: clamp(22px, 3vw, 32px);
}

.page-contact .flow-item::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 22px;
  bottom: 0;
  width: 1px;
  background: var(--line);
}

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

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

.page-contact .flow-item__node {
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border: 1px solid var(--violet);
  background: var(--ink-900);
  transition: border-color 0.3s var(--ease);
}

.page-contact .flow-item__node::after {
  content: "";
  position: absolute;
  inset: 5px;
  background: var(--cyan);
}

.page-contact .flow-item:hover .flow-item__node {
  border-color: var(--cyan);
}

.page-contact .flow-item__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 8px;
}

.page-contact .flow-item__title {
  margin: 0;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.page-contact .flow-item__desc {
  margin: 0 0 10px;
  max-width: 44ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

.page-contact .flow-item__eta {
  margin: 0;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

/* ---------- 准备清单 ---------- */

.page-contact .contact-prep__inner {
  display: grid;
  gap: clamp(26px, 3.6vw, 56px);
}

.page-contact .contact-prep__lead {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--silver);
}

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

.page-contact .prep-list__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 6px 18px;
  padding: clamp(18px, 2.4vw, 26px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .prep-list__num {
  grid-row: span 2;
  padding-top: 3px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--violet);
}

.page-contact .prep-list__title {
  margin: 0;
  font-size: 17px;
  letter-spacing: -0.01em;
}

.page-contact .prep-list__item p {
  margin: 0;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

/* ---------- 回复节奏 ---------- */

.page-contact .cadence-grid {
  display: grid;
  gap: clamp(26px, 3.6vw, 56px);
}

.page-contact .contact-cadence__lead {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--silver);
}

.page-contact .cadence-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .cadence-item {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--ink-700);
  background: var(--ink-850);
  transition: border-left-color 0.3s var(--ease);
}

.page-contact .cadence-item:nth-child(1) {
  border-left-color: var(--cyan);
}

.page-contact .cadence-item:nth-child(2) {
  border-left-color: var(--violet);
}

.page-contact .cadence-item:nth-child(3) {
  border-left-color: var(--gold);
}

.page-contact .cadence-item:nth-child(4) {
  border-left-color: var(--dust);
}

.page-contact .cadence-item:hover {
  border-left-color: var(--fog);
}

.page-contact .cadence-item__key {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 8px;
}

.page-contact .cadence-item__key .mono {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--silver);
}

.page-contact .cadence-item__val {
  font-family: var(--mono);
  font-size: 16px;
  color: var(--fog);
}

.page-contact .cadence-item__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--silver);
}

.page-contact .cadence-followup {
  margin-top: clamp(28px, 3.6vw, 48px);
  padding-top: clamp(22px, 2.8vw, 32px);
  border-top: 1px solid var(--line);
  max-width: 72ch;
}

.page-contact .cadence-followup__title {
  margin: 0 0 10px;
  font-size: 17px;
  color: var(--fog);
}

.page-contact .cadence-followup__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--silver);
}

/* ---------- 站点联络信息 ---------- */

.page-contact .info-panel {
  position: relative;
  padding: clamp(24px, 3.4vw, 44px);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--ink-850), var(--ink-900));
}

.page-contact .info-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 120px;
  height: 2px;
  background: linear-gradient(90deg, var(--violet), var(--cyan));
}

.page-contact .info-panel__head {
  max-width: 52ch;
}

.page-contact .info-grid {
  display: grid;
  gap: 1px;
  margin: clamp(22px, 3vw, 34px) 0 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .info-grid__cell {
  padding: 18px 20px;
  background: var(--ink-850);
}

.page-contact .info-grid dt {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--dust);
}

.page-contact .info-grid dd {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--fog);
  word-break: break-word;
}

.page-contact .info-note {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 62ch;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--dust);
}

/* ---------- 延伸阅读 ---------- */

.page-contact .link-strip {
  display: grid;
  gap: 18px;
  padding-top: clamp(24px, 3vw, 36px);
  border-top: 1px solid var(--line);
}

.page-contact .link-strip__title {
  margin: 0;
  font-size: 16px;
  letter-spacing: 0;
  color: var(--silver);
}

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

.page-contact .link-strip__list a {
  display: inline-block;
  font-size: 15px;
  line-height: 1.7;
  color: var(--fog);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 3px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-contact .link-strip__list a:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-contact .info-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .channels {
    grid-template-columns: 1.05fr 0.975fr 0.975fr;
    align-items: stretch;
  }

  .page-contact .contact-prep__inner,
  .page-contact .cadence-grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: start;
  }

  .page-contact .contact-prep__head,
  .page-contact .cadence-grid__head {
    position: sticky;
    top: 120px;
  }

  .page-contact .link-strip {
    grid-template-columns: 260px minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-flow__layout {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    align-items: start;
  }
}

@media (min-width: 1020px) {
  .page-contact .info-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 479px) {
  .page-contact .prep-list__item {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 4px 12px;
  }

  .page-contact .flow-item {
    grid-template-columns: 18px minmax(0, 1fr);
    gap: 12px;
  }

  .page-contact .flow-item::before {
    left: 8px;
  }

  .page-contact .flow-item__node {
    width: 16px;
    height: 16px;
  }

  .page-contact .flow-item__node::after {
    inset: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .channel::before,
  .page-contact .cadence-item,
  .page-contact .link-strip__list a {
    transition: none;
  }

  .page-contact .channel:hover {
    transform: none;
  }
}