.page-contact {
  --ct-line: rgba(199, 206, 208, .2);
  --ct-line-strong: rgba(199, 206, 208, .42);
  --ct-block: clamp(54px, 8vw, 116px);
  --ct-tight: clamp(30px, 4.4vw, 62px);
}

.page-contact .contact-hero {
  padding-top: clamp(38px, 6vw, 90px);
  padding-bottom: clamp(28px, 4.4vw, 58px);
  display: grid;
  gap: 16px;
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .contact-hero__eyebrow {
  margin: 0;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--signal);
}

.page-contact .contact-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 6.4vw, 78px);
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--paper);
  max-width: 15ch;
}

.page-contact .contact-hero__lede {
  margin: 0;
  max-width: 42ch;
  color: var(--ink-soft);
  font-size: clamp(15px, 1.35vw, 17px);
  line-height: 1.82;
}

/* 区块基础 */
.page-contact .ct-block {
  padding: var(--ct-block) 0 0;
}

.page-contact .ct-head {
  display: grid;
  gap: 10px;
  border-top: 1px solid var(--ct-line);
  padding-top: 18px;
  margin-bottom: clamp(24px, 3.2vw, 42px);
}

.page-contact .ct-head__num {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--flare);
}

.page-contact .ct-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3vw, 34px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .ct-head__sub {
  margin: 0;
  max-width: 52ch;
  color: var(--ink-dim);
  font-size: 15px;
  line-height: 1.78;
}

.page-contact .band {
  margin-top: var(--ct-block);
}

/* 01 三条渠道 */
.page-contact .channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-contact .channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 22px 20px;
  background: var(--turf);
  border: 1px solid var(--ct-line);
  border-radius: var(--radius);
  transition: border-color .35s var(--ease), box-shadow .35s var(--ease), transform .35s var(--ease);
}

.page-contact .channel:hover,
.page-contact .channel:focus-within {
  border-color: var(--signal);
  box-shadow: 0 22px 40px -30px rgba(53, 224, 200, .8);
  transform: translateY(-3px);
}

.page-contact .channel--mail {
  border-top: 2px solid var(--flare);
}

.page-contact .channel__kind {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--note);
}

.page-contact .channel__value {
  margin: 0;
  font-size: clamp(15px, 1.7vw, 19px);
  line-height: 1.5;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .channel__value--addr {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: clamp(15px, 1.5vw, 17px);
  letter-spacing: .01em;
}

.page-contact .channel__use {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14.5px;
  line-height: 1.78;
}

.page-contact .channel__meta {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--ct-line);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--note);
}

/* 02 勘误 */
.page-contact .fix-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

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

.page-contact .fix-list li {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .fix-list__key {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--signal);
}

.page-contact .fix-list__val {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.76;
  max-width: 46ch;
}

.page-contact .tpl {
  background: var(--paper);
  color: var(--ink);
  border-radius: var(--radius);
  border: 1px solid rgba(11, 13, 12, .12);
  padding: 24px 22px 26px;
}

.page-contact .tpl__label {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: .12em;
  color: #55635b;
}

.page-contact .tpl__subject {
  margin: 0 0 16px;
  padding: 12px 14px;
  font-size: 13.5px;
  line-height: 1.6;
  background: rgba(11, 13, 12, .06);
  border-left: 3px solid var(--flare);
  border-radius: var(--radius);
  word-break: break-word;
}

.page-contact .tpl__body {
  margin: 0;
  color: #35403a;
  font-size: 14.5px;
  line-height: 1.82;
}

.page-contact .tpl__body a {
  color: #0B0D0C;
  text-decoration: underline;
  text-decoration-color: var(--flare);
  text-underline-offset: 3px;
}

/* 03 订阅与合作 */
.page-contact .coop {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-contact .coop__item {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 22px 20px 20px;
  background: linear-gradient(180deg, rgba(28, 60, 46, .9), rgba(16, 36, 28, .9));
  border: 1px solid var(--ct-line);
  border-radius: var(--radius);
  transition: border-color .35s var(--ease);
}

.page-contact .coop__item:hover {
  border-color: var(--ct-line-strong);
}

.page-contact .coop__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-contact .coop__idx {
  font-size: 12px;
  color: var(--ember);
  letter-spacing: .12em;
}

.page-contact .coop__title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: .01em;
}

.page-contact .coop__desc {
  margin: 0;
  color: var(--ink-dim);
  font-size: 14.5px;
  line-height: 1.78;
}

.page-contact .coop__desc a {
  color: var(--signal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .coop__subject {
  margin: auto 0 0;
  padding: 11px 12px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--paper);
  background: rgba(53, 224, 200, .08);
  border: 1px dashed rgba(53, 224, 200, .42);
  border-radius: var(--radius);
  word-break: break-word;
}

/* 图片 */
.page-contact .shot {
  margin: clamp(30px, 4vw, 56px) 0 0;
}

.page-contact .shot img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--ct-line);
  border-radius: var(--radius);
}

.page-contact .shot__cap {
  margin: 12px 0 0;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--note);
}

/* 04 节奏 */
.page-contact .rhythm {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--ct-line);
  border: 1px solid var(--ct-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .rhythm__cell {
  background: var(--ink);
  padding: 20px 18px 22px;
  display: grid;
  gap: 8px;
}

.page-contact .rhythm__num {
  margin: 0;
  font-size: clamp(18px, 2.2vw, 24px);
  color: var(--flare);
  letter-spacing: -.01em;
}

.page-contact .rhythm__label {
  margin: 0;
  color: var(--ink-dim);
  font-size: 14px;
  line-height: 1.7;
}

.page-contact .rhythm__note {
  margin: clamp(20px, 2.6vw, 30px) 0 0;
  max-width: 62ch;
  color: var(--ink-soft);
  font-size: 14.5px;
  line-height: 1.8;
  padding-left: 16px;
  border-left: 2px solid var(--signal);
}

/* 05 流程 */
.page-contact .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-contact .steps__item {
  position: relative;
  padding: 0 0 34px 50px;
}

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

.page-contact .steps__item::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 36px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--ct-line-strong), rgba(199, 206, 208, 0));
}

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

.page-contact .steps__dot {
  position: absolute;
  left: 0;
  top: 2px;
  width: 31px;
  height: 31px;
  display: grid;
  place-items: center;
  font-size: 12px;
  color: var(--signal);
  background: var(--field);
  border: 1px solid var(--ct-line-strong);
  border-radius: 50%;
}

.page-contact .steps__title {
  margin: 6px 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .steps__text {
  margin: 0;
  color: var(--ink-dim);
  font-size: 14.5px;
  line-height: 1.76;
  max-width: 40ch;
}

/* 06 问答 */
.page-contact .qa {
  border-top: 1px solid var(--ct-line);
}

.page-contact .qa__item {
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .qa__item summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 20px 44px 20px 0;
  color: var(--paper);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  transition: color .3s var(--ease);
}

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

.page-contact .qa__item summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--flare);
  transition: transform .3s var(--ease);
}

.page-contact .qa__item[open] summary {
  color: var(--signal);
}

.page-contact .qa__item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

.page-contact .qa__body {
  padding: 0 0 22px;
  max-width: 66ch;
  color: var(--ink-soft);
  font-size: 14.5px;
  line-height: 1.82;
}

.page-contact .qa__body a {
  color: var(--signal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .contact-foot {
  margin: clamp(28px, 3.4vw, 44px) 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--ct-line);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--note);
}

.page-contact .contact-foot { padding-bottom: clamp(40px, 5vw, 80px); }

/* 响应式 */
@media (min-width: 640px) {
  .page-contact .fix-list li {
    grid-template-columns: 120px 1fr;
    gap: 18px;
    align-items: start;
  }

  .page-contact .fix-list__key {
    padding-top: 4px;
  }

  .page-contact .coop {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .rhythm {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .page-contact .channels {
    grid-template-columns: 5fr 4fr 3fr;
    align-items: stretch;
  }

  .page-contact .channel {
    padding: 30px 26px 22px;
  }

  .page-contact .fix-layout {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-contact .rhythm {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-contact .steps {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }

  .page-contact .steps__item {
    padding: 58px 0 0;
  }

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

  .page-contact .steps__item::before {
    left: 33px;
    right: -20px;
    top: 15px;
    bottom: auto;
    width: auto;
    height: 1px;
    background: linear-gradient(90deg, var(--ct-line-strong), rgba(199, 206, 208, .06));
  }

  .page-contact .steps__dot {
    top: 0;
  }

  .page-contact .steps__title {
    margin-top: 0;
  }

  .page-contact .qa {
    max-width: 900px;
  }
}

@media (min-width: 1160px) {
  .page-contact .channels {
    grid-template-columns: 6fr 4fr 3fr;
  }
}
<<<END>>>