.page-contact {
  --pc-rule: 1px solid rgba(169, 179, 196, 0.18);
  --pc-rule-strong: 1px solid rgba(169, 179, 196, 0.32);
  background: var(--ink);
  color: var(--paper);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-contact .stage {
  position: relative;
  padding: clamp(20px, 3.5vw, 44px) 0 clamp(44px, 6vw, 84px);
  border-bottom: var(--pc-rule);
  background: var(--ink);
}

.page-contact .stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(720px 340px at 10% -10%, rgba(21, 227, 212, 0.12), transparent 70%),
    radial-gradient(560px 320px at 96% 6%, rgba(216, 166, 43, 0.13), transparent 72%);
  pointer-events: none;
}

.page-contact .stage__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 4.5vw, 60px);
}

@media (min-width: 980px) {
  .page-contact .stage__grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }
}

.page-contact .stage__head .crumbs {
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-contact .stage__title {
  font-family: var(--font-display);
  font-size: clamp(32px, 5.6vw, 62px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 10px 0 clamp(14px, 2vw, 20px);
}

.page-contact .stage__lede {
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.78;
  color: var(--mist);
  max-width: 58ch;
  margin: 0 0 clamp(24px, 3vw, 34px);
}

.page-contact .stage__media {
  margin: 0 0 clamp(26px, 3.4vw, 38px);
}

/* ---------- 渠道卡片 ---------- */
.page-contact .channels {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(14px, 1.8vw, 20px);
}

.page-contact .channel {
  padding: 20px 20px 22px;
  background: var(--ink-2);
  border: var(--border);
  box-shadow: var(--shadow-hard);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-contact .channel:hover,
.page-contact .channel:focus-within {
  transform: translateY(-2px);
  box-shadow: var(--shadow-tight);
}

.page-contact .channel__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  margin-bottom: 10px;
}

.page-contact .channel__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(16px, 2vw, 21px);
  line-height: 1.4;
  color: var(--gold);
  word-break: break-word;
  margin-bottom: 12px;
}

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

/* ---------- 流程刻度 ---------- */
.page-contact .stage__flow {
  padding-top: clamp(4px, 1vw, 10px);
}

.page-contact .stage__flow-title {
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0 0 8px;
}

.page-contact .stage__flow-note {
  display: block;
  margin: 0 0 clamp(22px, 3vw, 32px);
}

.page-contact .flow {
  list-style: none;
  margin: 0;
  padding: 0 0 0 28px;
  position: relative;
}

.page-contact .flow::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--magenta) 58%, var(--gold));
  opacity: 0.75;
}

.page-contact .flow__item {
  position: relative;
  padding-bottom: clamp(22px, 3vw, 34px);
}

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

.page-contact .flow__item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 5px;
  width: 12px;
  height: 12px;
  box-sizing: border-box;
  border: 2px solid var(--cyan);
  background: var(--ink);
  transform: rotate(45deg);
}

.page-contact .flow__item:last-child::before {
  border-color: var(--gold);
  background: var(--gold);
}

.page-contact .flow__meta {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lemon);
  margin-bottom: 6px;
}

.page-contact .flow__title {
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 700;
  color: var(--paper);
  margin: 0 0 7px;
}

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

/* ---------- 收费与通道 ---------- */
.page-contact .fee {
  background: var(--ink-2);
  border-bottom: var(--pc-rule);
  padding: clamp(40px, 6vw, 80px) 0;
}

.page-contact .section-head {
  margin-bottom: clamp(24px, 3vw, 40px);
}

.page-contact .fee__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
}

@media (min-width: 980px) {
  .page-contact .fee__grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }
}

.page-contact .fee__lede {
  font-size: clamp(16px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--mist);
  margin: 0 0 clamp(22px, 2.8vw, 30px);
  max-width: 62ch;
}

.page-contact .fee__scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: var(--border);
  box-shadow: var(--shadow-hard);
  background: var(--ink);
}

.page-contact .fee-table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-size: 15px;
}

.page-contact .fee-table caption {
  text-align: left;
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  border-bottom: var(--pc-rule);
}

.page-contact .fee-table th,
.page-contact .fee-table td {
  text-align: left;
  vertical-align: top;
  padding: 15px 18px;
  line-height: 1.65;
  border-bottom: var(--pc-rule);
}

.page-contact .fee-table thead th {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  font-weight: 400;
  color: var(--mist);
  background: var(--ink-3);
  white-space: nowrap;
}

.page-contact .fee-table tbody tr:nth-child(even) {
  background: rgba(169, 179, 196, 0.055);
}

.page-contact .fee-table tbody th {
  font-weight: 700;
  color: var(--paper);
  white-space: nowrap;
}

.page-contact .fee-table tbody td {
  color: var(--mist);
}

.page-contact .fee-table tbody tr:last-child th,
.page-contact .fee-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-contact .fee-table tbody tr.is-rush > *:first-child {
  box-shadow: inset 3px 0 0 var(--magenta);
}

.page-contact .fee-table tbody tr.is-rush th {
  color: var(--magenta);
}

.page-contact .fee__aside-note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 提交要素 ---------- */
.page-contact .essentials {
  padding: clamp(42px, 6vw, 84px) 0;
  background: var(--ink);
}

.page-contact .essentials__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2vw, 22px);
}

@media (min-width: 660px) {
  .page-contact .essentials__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-contact .essentials__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-contact .essential:nth-child(even) {
    margin-top: 26px;
  }
}

.page-contact .essential {
  padding: 22px 20px 24px;
  background: var(--ink-2);
  border: var(--border);
  box-shadow: var(--shadow-hard);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-contact .essential:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-tight);
}

.page-contact .essential__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 28px;
  line-height: 1;
  color: var(--gold);
  margin-bottom: 14px;
}

.page-contact .essential__title {
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
  margin: 0 0 9px;
}

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

/* ---------- 常见情况 ---------- */
.page-contact .cases {
  background: var(--ink-2);
  border-top: var(--pc-rule);
  border-bottom: var(--pc-rule);
  padding: clamp(42px, 6vw, 84px) 0;
}

.page-contact .cases__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 900px) {
  .page-contact .cases__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .case {
  background: var(--ink);
  border: var(--border);
  box-shadow: var(--shadow-hard);
  transition: box-shadow var(--dur) var(--ease);
}

.page-contact .case[open] {
  box-shadow: var(--shadow-tight);
}

.page-contact .case__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(16px, 1.7vw, 18px);
  font-weight: 700;
  color: var(--paper);
}

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

.page-contact .case__q::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--cyan);
  transition: transform var(--dur) var(--ease);
}

.page-contact .case[open] .case__q::after {
  content: "–";
}

.page-contact .case__q:hover::after {
  transform: scale(1.2);
}

.page-contact .case__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-contact .case__a {
  padding: 0 20px 20px;
  border-top: var(--pc-rule);
}

.page-contact .case__a p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .case__a .case__hint {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--lemon);
}

/* ---------- 合作联络 ---------- */
.page-contact .collab {
  position: relative;
  padding: clamp(56px, 9vw, 120px) 0 clamp(64px, 9vw, 128px);
  background: var(--ink);
}

.page-contact .collab::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--magenta) 55%, var(--cyan));
  opacity: 0.72;
}

.page-contact .collab__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4.5vw, 64px);
}

@media (min-width: 900px) {
  .page-contact .collab__inner {
    grid-template-columns: 6fr 5fr;
    align-items: start;
  }
}

.page-contact .collab__title {
  font-size: clamp(26px, 3.6vw, 40px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 10px 0 clamp(16px, 2vw, 22px);
}

.page-contact .collab__text {
  font-size: clamp(16px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--mist);
  margin: 0 0 16px;
  max-width: 60ch;
}

.page-contact .collab__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(20px, 2.6vw, 30px);
}

.page-contact .collab__side {
  padding: 24px 22px 26px;
  background: var(--ink-2);
  border: var(--border);
  box-shadow: var(--shadow-hard);
}

.page-contact .collab__side-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-contact .collab__mail {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.5;
  color: var(--gold);
  word-break: break-word;
}

.page-contact .collab__points {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--pc-rule);
}

.page-contact .collab__points li {
  position: relative;
  padding: 13px 0 13px 20px;
  border-bottom: var(--pc-rule);
  font-size: 15px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .collab__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 8px;
  height: 8px;
  background: var(--lemon);
}

.page-contact .collab__side-note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .collab__side-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(21, 227, 212, 0.5);
  transition: border-color var(--dur) var(--ease);
}

.page-contact .collab__side-note a:hover {
  border-bottom-color: var(--cyan);
}

.page-contact .collab__side-note a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 自适应与降级 ---------- */
@media (max-width: 560px) {
  .page-contact .channel,
  .page-contact .essential,
  .page-contact .case,
  .page-contact .collab__side {
    box-shadow: 5px 5px 0 var(--hard);
  }
  .page-contact .fee__scroll {
    box-shadow: 5px 5px 0 var(--hard);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .essential,
  .page-contact .case,
  .page-contact .case__q::after,
  .page-contact .collab__side-note a {
    transition: none;
  }
  .page-contact .channel:hover,
  .page-contact .channel:focus-within,
  .page-contact .essential:hover,
  .page-contact .case__q:hover::after {
    transform: none;
  }
  .page-contact .channel:hover,
  .page-contact .channel:focus-within,
  .page-contact .essential:hover {
    box-shadow: var(--shadow-hard);
  }
}