.page-contact {
  --pc-line: 1px solid var(--ink-700);
  --pc-gap: clamp(18px, 2.4vw, 30px);
  --pc-green-veil: rgba(61, 240, 138, .12);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  padding-top: clamp(18px, 3vw, 34px);
}

.page-contact .pc-hero .ky-breadcrumb {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-contact .pc-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--cyan-400);
}

.page-contact h1 {
  margin: 0 0 18px;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 7vw, 60px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--paper-050);
}

.page-contact .pc-lead {
  margin: 0 0 clamp(26px, 4vw, 42px);
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.85;
  color: var(--slate-300);
}

.page-contact .pc-heroFig {
  margin: 0;
}

.page-contact .ky-figure__img {
  position: relative;
  overflow: hidden;
  border: var(--pc-line);
  border-radius: var(--radius-lg);
  background: linear-gradient(140deg, var(--ink-800), var(--ink-900));
}

.page-contact .pc-heroFig .ky-figure__img {
  aspect-ratio: 21 / 9;
}

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

/* ---------- 章节头部 ---------- */
.page-contact .pc-head {
  margin-bottom: clamp(24px, 3.4vw, 40px);
  max-width: 68ch;
}

.page-contact .pc-head .ky-section__num {
  display: block;
  margin-bottom: 8px;
}

.page-contact .pc-head .ky-section__title {
  margin: 0 0 12px;
}

.page-contact .pc-head .ky-section__lead {
  margin: 0;
}

/* ---------- 01 渠道 ---------- */
.page-contact .pc-channelList {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--pc-line);
}

.page-contact .pc-channel {
  display: grid;
  gap: 10px;
  padding: clamp(20px, 3vw, 30px) 0;
  border-bottom: var(--pc-line);
}

.page-contact .pc-channel__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--slate-300);
}

.page-contact .pc-channel__main {
  min-width: 0;
}

.page-contact .pc-channel__value {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(19px, 4.6vw, 30px);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--paper-050);
  overflow-wrap: anywhere;
  font-variant-numeric: tabular-nums;
}

.page-contact .pc-channel__use {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate-300);
}

/* ---------- 02 检查清单 ---------- */
.page-contact .pc-feedback__grid {
  display: grid;
  gap: var(--pc-gap);
}

.page-contact .pc-feedback__col {
  min-width: 0;
}

.page-contact .pc-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .pc-check {
  border-bottom: 1px dashed var(--ink-700);
}

.page-contact .pc-check:first-child {
  border-top: 1px dashed var(--ink-700);
}

.page-contact .pc-check__label {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  cursor: pointer;
}

.page-contact .pc-check__label input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .pc-check__box {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border: 1px solid var(--ink-700);
  border-radius: 6px;
  background: var(--ink-800);
  transition: background-color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .pc-check__label input:checked + .pc-check__box {
  background: var(--cyan-400);
  border-color: var(--cyan-400);
}

.page-contact .pc-check__label input:checked + .pc-check__box::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ink-900);
  border-bottom: 2px solid var(--ink-900);
  transform: rotate(42deg);
}

.page-contact .pc-check__label input:focus-visible + .pc-check__box {
  outline: 2px solid var(--cyan-400);
  outline-offset: 2px;
}

.page-contact .pc-check__text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate-300);
  transition: color .2s var(--ease);
}

.page-contact .pc-check__label input:checked ~ .pc-check__text {
  color: var(--paper-050);
}

.page-contact .pc-done {
  margin: 18px 0 0;
  padding: 11px 18px;
  border: 1px solid rgba(61, 240, 138, .35);
  border-radius: var(--radius-pill);
  background: var(--pc-green-veil);
  color: var(--green-400);
  font-size: 14px;
  line-height: 1.6;
  opacity: .6;
  transition: opacity .32s var(--ease);
}

.page-contact .pc-checklist:not(:has(input:not(:checked))) + .pc-done {
  opacity: 1;
}

.page-contact .pc-figSide {
  margin: 0;
}

.page-contact .pc-figSide .ky-figure__img {
  aspect-ratio: 9 / 7;
}

/* ---------- 主题行参考 ---------- */
.page-contact .pc-draft {
  margin-top: clamp(28px, 4vw, 48px);
  padding-top: clamp(22px, 3vw, 34px);
  border-top: var(--pc-line);
}

.page-contact .pc-draft__title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(18px, 2.4vw, 24px);
  letter-spacing: -.01em;
  color: var(--paper-050);
}

.page-contact .pc-rail .ky-rail__list {
  margin: 0 0 18px;
}

.page-contact .pc-draft__panel {
  padding: clamp(18px, 2.6vw, 26px);
  border: var(--pc-line);
  border-left: 3px solid var(--cyan-400);
  border-radius: var(--radius-md);
  background: var(--ink-800);
}

.page-contact .pc-draft__panel[hidden] {
  display: none;
}

.page-contact .pc-draft__subject {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.9vw, 17px);
  line-height: 1.65;
  color: var(--cyan-400);
  overflow-wrap: anywhere;
}

.page-contact .pc-draft__hint {
  margin: 0;
  max-width: 66ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--slate-300);
}

/* ---------- 流程 ---------- */
.page-contact .pc-band {
  width: 100%;
  height: 3px;
  margin-bottom: clamp(22px, 3vw, 34px);
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--cyan-400) 0%, rgba(33, 230, 193, .18) 46%, rgba(33, 230, 193, 0) 100%);
}

.page-contact .pc-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: pcstep;
  display: grid;
  gap: clamp(18px, 2.4vw, 28px);
}

.page-contact .pc-steps > li {
  position: relative;
  max-width: 74ch;
  padding-left: 54px;
}

.page-contact .pc-steps > li::before {
  counter-increment: pcstep;
  content: counter(pcstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  padding: 2px 8px;
  border: 1px solid rgba(255, 209, 102, .32);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--amber-300);
}

.page-contact .pc-steps__title {
  display: block;
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 600;
  color: var(--paper-050);
}

.page-contact .pc-steps__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate-300);
}

.page-contact .pc-note {
  margin: clamp(20px, 3vw, 30px) 0 0;
  max-width: 70ch;
  padding: 16px 20px;
  border: var(--pc-line);
  border-left: 3px solid var(--orange-500);
  border-radius: var(--radius-md);
  background: var(--ink-800);
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate-300);
}

.page-contact .pc-note a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(33, 230, 193, .35);
}

.page-contact .pc-note a:hover {
  border-bottom-color: var(--cyan-400);
}

/* ---------- 05 合作 ---------- */
.page-contact .pc-coop {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--pc-line);
}

.page-contact .pc-coop > li {
  display: grid;
  gap: 8px;
  padding: 18px 0;
  border-bottom: var(--pc-line);
}

.page-contact .pc-coop__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan-400);
}

.page-contact .pc-coop__v {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate-300);
}

/* ---------- 06 站点信息 ---------- */
.page-contact .pc-meta {
  padding-bottom: clamp(40px, 6vw, 76px);
}

.page-contact .pc-meta__inner {
  display: grid;
  gap: 10px;
  padding-top: 22px;
  border-top: var(--pc-line);
}

.page-contact .pc-meta__icp {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--slate-300);
}

.page-contact .pc-meta__line {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate-300);
}

/* ---------- 响应式 ---------- */
@media (min-width: 780px) {
  .page-contact .pc-channel {
    grid-template-columns: 132px minmax(0, 1fr);
    align-items: start;
    gap: 0 28px;
  }

  .page-contact .pc-channel__label {
    padding-top: 10px;
  }

  .page-contact .pc-coop > li {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 0 28px;
    padding: 20px 0;
  }

  .page-contact .pc-coop__k {
    padding-top: 4px;
  }
}

@media (min-width: 920px) {
  .page-contact .pc-feedback__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-check__box,
  .page-contact .pc-check__text,
  .page-contact .pc-done {
    transition: none;
  }
}