.page-contact {
  --rail-w: 400px;
  --stick-top: 130px;
  padding-bottom: clamp(56px, 9vw, 118px);
}

.page-contact .breadcrumb__sep {
  color: var(--mute);
  opacity: .6;
}

/* ---------- 页头 ---------- */
.page-contact .contact-head {
  padding: clamp(26px, 4.6vw, 54px) 0 clamp(26px, 3.6vw, 44px);
}

.page-contact .contact-head h1 {
  margin: 14px 0 0;
  font-size: clamp(30px, 6vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.022em;
  font-weight: 800;
  color: var(--text);
  max-width: 15ch;
}

.page-contact .contact-head__lead {
  margin: clamp(16px, 2.2vw, 24px) 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--mute);
  overflow-wrap: break-word;
}

/* ---------- 双栏骨架 ---------- */
.page-contact .contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4.4vw, 54px);
  position: relative;
}

.page-contact .contact-rail {
  display: grid;
  gap: 12px;
  align-content: start;
  min-width: 0;
}

.page-contact .contact-body {
  display: grid;
  gap: clamp(36px, 5vw, 64px);
  min-width: 0;
}

/* ---------- 左栏图片 ---------- */
.page-contact .contact-rail__figure,
.page-contact .contact-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
  background: var(--panel);
}

.page-contact .contact-rail__figure img,
.page-contact .contact-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(.9) contrast(1.05);
}

.page-contact .contact-rail__figure {
  margin-bottom: 6px;
}

/* ---------- 渠道卡 ---------- */
.page-contact .channel-card {
  position: relative;
  display: grid;
  gap: 7px;
  padding: 17px 18px 17px 20px;
  background: var(--glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: 2px;
  outline: none;
  transition: border-color var(--t), box-shadow var(--t), transform var(--t);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  bottom: 13px;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan), var(--purple));
  opacity: .5;
  transition: opacity var(--t);
}

.page-contact .channel-card:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-contact .channel-card:hover::before {
  opacity: 1;
}

.page-contact .channel-card:focus-visible {
  border-color: var(--cyan);
  box-shadow: 0 0 0 2px var(--cyan);
}

.page-contact .channel-card:focus-visible::before {
  opacity: 1;
}

.page-contact .channel-card__kind {
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-contact .channel-card__value {
  margin: 0;
  font-size: clamp(14px, 1.5vw, 16px);
  line-height: 1.5;
  color: var(--text);
  letter-spacing: .005em;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-contact .channel-card__note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mute);
}

.page-contact .rail-chip {
  display: inline-flex;
  align-items: center;
  align-self: start;
  margin: 4px 0 0;
  padding: 8px 13px;
  border: 1px solid rgba(255, 122, 47, .42);
  background: rgba(255, 122, 47, .1);
  color: var(--orange);
  font-size: 12px;
  letter-spacing: .08em;
}

/* ---------- 区块通用 ---------- */
.page-contact .contact-block {
  min-width: 0;
}

.page-contact .contact-block__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 13px;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-block__num {
  flex: none;
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--cyan);
  white-space: nowrap;
}

.page-contact .contact-block__num::after {
  content: "—";
  display: inline-block;
  margin-left: 9px;
  color: var(--deep);
}

.page-contact .contact-block h2 {
  margin: 0;
  font-size: clamp(19px, 2.4vw, 26px);
  font-weight: 700;
  letter-spacing: -0.012em;
  color: var(--text);
}

.page-contact .contact-block__lead {
  margin: 18px 0 0;
  max-width: 44ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mute);
}

.page-contact .contact-foot-note {
  margin: 22px 0 0;
  max-width: 52ch;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mute);
}

/* ---------- 纠错清单 ---------- */
.page-contact .check-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .check-row {
  position: relative;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .check-row__box {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  opacity: 0;
  margin: 0;
}

.page-contact .check-row__body {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 15px;
  row-gap: 6px;
  align-items: baseline;
  padding: 19px 10px 19px 4px;
  cursor: pointer;
  transition: background-color var(--t);
}

.page-contact .check-row__body:hover {
  background: rgba(34, 224, 214, .045);
}

.page-contact .check-row__idx {
  grid-row: 1 / span 2;
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--mute);
  white-space: nowrap;
  transition: color var(--t);
}

.page-contact .check-row__body:hover .check-row__idx {
  color: var(--cyan);
}

.page-contact .check-row__title {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text);
  transition: color var(--t);
}

.page-contact .check-row__desc {
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--mute);
  max-width: 48ch;
}

.page-contact .check-row__box:checked + .check-row__body .check-row__title {
  color: var(--mute);
  text-decoration: line-through;
  text-decoration-color: var(--cyan);
  text-decoration-thickness: 1.5px;
}

.page-contact .check-row__box:checked + .check-row__body .check-row__idx {
  color: var(--cyan);
}

.page-contact .check-row__box:checked + .check-row__body {
  background: rgba(34, 224, 214, .05);
}

.page-contact .check-row__box:focus-visible + .check-row__body {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 时段面板 ---------- */
.page-contact .window-panel {
  margin-top: 24px;
  padding: clamp(20px, 3vw, 30px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  border-radius: 2px;
}

.page-contact .window-panel__badge {
  display: inline-block;
  padding: 6px 12px;
  background: rgba(255, 122, 47, .12);
  border: 1px solid rgba(255, 122, 47, .4);
  color: var(--orange);
  font-size: 12px;
  letter-spacing: .1em;
}

.page-contact .window-panel__text {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
}

.page-contact .window-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 0 30px;
}

.page-contact .window-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 11px;
  padding: 12px 0;
  border-top: 1px solid var(--line-soft);
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--text);
}

.page-contact .slot-mark {
  width: 7px;
  height: 7px;
  margin-top: 8px;
  flex: none;
  background: var(--cyan);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

/* ---------- 用途边界 ---------- */
.page-contact .scope-grid {
  margin-top: 26px;
  display: grid;
  gap: 18px;
}

.page-contact .scope-col {
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--panel);
}

.page-contact .scope-col--in {
  border-top: 2px solid var(--cyan);
}

.page-contact .scope-col--out {
  border-top: 2px solid var(--deep);
  background: transparent;
}

.page-contact .scope-col__title {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--text);
}

.page-contact .scope-col--out .scope-col__title {
  color: var(--mute);
}

.page-contact .scope-col__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .scope-col__list li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--mute);
}

.page-contact .scope-col--in .scope-col__list li {
  color: var(--text);
}

.page-contact .scope-col__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 9px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .scope-col--out .scope-col__list li::before {
  background: var(--mute);
  opacity: .6;
}

/* ---------- 常见类型 ---------- */
.page-contact .issue-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .issue-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px 15px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .issue-row__idx {
  grid-row: 1 / span 2;
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--violet, var(--purple));
  padding-top: 3px;
}

.page-contact .issue-row__text {
  min-width: 0;
}

.page-contact .issue-row__title {
  margin: 0;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text);
}

.page-contact .issue-row__desc {
  margin: 5px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mute);
  max-width: 46ch;
}

.page-contact .issue-row .text-link {
  font-size: 13px;
  justify-self: start;
}

/* ---------- 收尾斜切色块 ---------- */
.page-contact .contact-close {
  margin: clamp(44px, 6vw, 86px) 0 0 auto;
  width: min(440px, 68%);
  height: clamp(62px, 8vw, 96px);
  background: linear-gradient(104deg, rgba(34, 224, 214, .24), rgba(123, 92, 255, .22) 54%, rgba(255, 122, 47, .22));
  clip-path: polygon(0 46%, 100% 0, 100% 100%, 0 100%);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-contact .window-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .scope-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
  .page-contact .issue-row {
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 8px 22px;
  }
  .page-contact .issue-row__idx {
    grid-row: auto;
    padding-top: 0;
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-layout {
    grid-template-columns: minmax(300px, var(--rail-w)) minmax(0, 1fr);
    gap: clamp(38px, 4.6vw, 68px);
    align-items: start;
  }
  .page-contact .contact-rail {
    position: sticky;
    top: var(--stick-top);
  }
  .page-contact .contact-figure {
    max-width: 640px;
  }
}

@media (min-width: 1240px) {
  .page-contact .contact-head__lead {
    max-width: 66ch;
  }
}
<<<END>>>

.page-contact {
  --violet: currentColor;
}