/* ============================================
   联系与反馈 / page-contact
   ============================================ */
.page-contact {
  --cp-rule: 1px solid var(--grid);
  background: var(--bg);
  color: var(--ink);
  padding-bottom: clamp(56px, 8vw, 112px);
}

.page-contact .breadcrumb {
  padding-top: clamp(18px, 2.6vw, 30px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(28px, 4.6vw, 58px) 0 clamp(34px, 5vw, 62px);
  border-bottom: var(--cp-rule);
}

.page-contact .contact-hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(46, 58, 53, 0.55) 0 1px, transparent 1px 56px),
    repeating-linear-gradient(90deg, rgba(46, 58, 53, 0.55) 0 1px, transparent 1px 56px);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 94%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 94%);
  pointer-events: none;
}

.page-contact .contact-hero__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.1rem, 5.6vw, 4.4rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 14px 0 0;
  position: relative;
}

.page-contact .contact-hero__lede {
  position: relative;
  max-width: 60ch;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.5vw, 1.1rem);
  line-height: 1.78;
}

.page-contact .contact-hero__facts {
  position: relative;
  list-style: none;
  margin: clamp(26px, 3.6vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--grid);
  border: var(--cp-rule);
}

.page-contact .contact-hero__facts > li {
  background: var(--rail);
  padding: 16px clamp(16px, 2vw, 22px) 18px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  min-width: 0;
}

.page-contact .contact-hero__fact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-contact .contact-hero__fact-value {
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 1.5vw, 1.15rem);
  line-height: 1.4;
  color: var(--ink);
  position: relative;
  padding-bottom: 8px;
  overflow-wrap: anywhere;
}

.page-contact .contact-hero__fact-value::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 36px;
  height: 2px;
  background: var(--accent);
}

.page-contact .contact-hero__figure {
  display: block;
  margin: clamp(28px, 4vw, 48px) 0 0;
  border: var(--cp-rule);
  background: var(--rail);
}

.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1400 / 600;
  object-fit: cover;
}

/* ---------- 侧轨 + 正文 ---------- */
.page-contact .page-shell {
  padding-top: clamp(34px, 5vw, 64px);
}

.page-contact .contact-rail {
  display: none;
}

.page-contact .contact-rail .rail__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
  margin: 0 0 14px;
}

.page-contact .contact-rail .rail__nav {
  display: flex;
  flex-direction: column;
}

.page-contact .contact-rail .rail__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  border-top: var(--cp-rule);
  border-left: 2px solid transparent;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.45;
  transition: color 0.18s ease, border-color 0.18s ease, padding-left 0.18s ease;
}

.page-contact .contact-rail .rail__link:last-child {
  border-bottom: var(--cp-rule);
}

.page-contact .contact-rail .rail__link:hover {
  color: var(--ink);
}

.page-contact .contact-rail .rail__link.is-current {
  color: var(--ink);
  border-left-color: var(--accent);
  padding-left: 10px;
}

.page-contact .contact-rail .rail__index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  transition: color 0.18s ease;
}

.page-contact .contact-rail .rail__link.is-current .rail__index {
  color: var(--accent);
}

.page-contact .contact-rail .rail__note {
  margin: 22px 0 0;
  padding-left: 12px;
  border-left: 1px solid var(--accent);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.72;
}

.page-contact .contact-flow {
  min-width: 0;
}

/* ---------- 章节骨架 ---------- */
.page-contact .chapter {
  padding: clamp(30px, 4.4vw, 52px) 0;
  border-top: var(--cp-rule);
}

.page-contact .chapter:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-contact .chapter__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin: 0;
}

.page-contact .chapter__title {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(1.35rem, 2.4vw, 1.95rem);
  letter-spacing: -0.01em;
  line-height: 1.26;
  margin: 10px 0 0;
}

.page-contact .chapter__lede {
  margin: 14px 0 0;
  max-width: 64ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
}

.page-contact .chapter__body {
  margin-top: clamp(24px, 3vw, 36px);
}

/* ---------- 通用小列表 ---------- */
.page-contact .cp-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .cp-list li {
  position: relative;
  padding-left: 18px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.68;
}

.page-contact .cp-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--accent);
}

/* ---------- 01 渠道 ---------- */
.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--grid);
  border: var(--cp-rule);
}

.page-contact .channel-card {
  position: relative;
  background: var(--panel);
  padding: clamp(22px, 3vw, 32px);
  min-width: 0;
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 48px;
  height: 2px;
  background: var(--accent);
}

.page-contact .channel-card__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-contact .channel-card__value {
  display: inline-block;
  margin: 14px 0 0;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--accent);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(1rem, 2.1vw, 1.4rem);
  line-height: 1.35;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .channel-card__meta {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--data);
}

.page-contact .channel-card__list {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px dashed var(--grid);
}

/* ---------- 02 诉求 ---------- */
.page-contact .request-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--grid);
  border: var(--cp-rule);
}

.page-contact .request-cell {
  background: var(--bg);
  padding: clamp(20px, 2.6vw, 28px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.page-contact .request-cell__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--data);
}

.page-contact .request-cell__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.35;
  color: var(--ink);
}

.page-contact .request-cell__route {
  margin: 0;
  align-self: flex-start;
  padding: 5px 10px;
  border: 1px solid var(--grid);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.page-contact .request-cell__need {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

.page-contact .request-cell__eta {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: var(--cp-rule);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--ink);
}

/* ---------- 03 反馈字段 ---------- */
.page-contact .field-stack {
  border: var(--cp-rule);
  background: var(--rail);
  display: grid;
}

.page-contact .field-row {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 10px 16px;
  padding: 18px clamp(16px, 2.4vw, 26px);
  border-top: var(--cp-rule);
  align-items: start;
}

.page-contact .field-row:first-child {
  border-top: 0;
}

.page-contact .field-row__no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--data);
  padding-top: 5px;
}

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

.page-contact .field-row__label {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 16px;
  color: var(--ink);
}

.page-contact .field-row__hint {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.68;
}

.page-contact .field-row__sample {
  grid-column: 2;
  padding-left: 12px;
  border-left: 1px solid var(--grid);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
  overflow-wrap: anywhere;
}

/* ---------- 04 合作 ---------- */
.page-contact .coop-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--grid);
  border: var(--cp-rule);
}

.page-contact .coop-col {
  background: var(--panel);
  padding: clamp(20px, 2.6vw, 30px);
  min-width: 0;
}

.page-contact .coop-col__title {
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: var(--cp-rule);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 17px;
  color: var(--ink);
}

/* ---------- 05 地址 ---------- */
.page-contact .address-block {
  position: relative;
  border: var(--cp-rule);
  padding: clamp(24px, 3.4vw, 42px);
  background-color: var(--rail);
  background-image:
    repeating-linear-gradient(0deg, rgba(46, 58, 53, 0.6) 0 1px, transparent 1px 32px),
    repeating-linear-gradient(90deg, rgba(46, 58, 53, 0.6) 0 1px, transparent 1px 32px);
}

.page-contact .address-block::before,
.page-contact .address-block::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid var(--accent);
}

.page-contact .address-block::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.page-contact .address-block::after {
  right: -1px;
  bottom: -1px;
  border-top: 0;
  border-left: 0;
}

.page-contact .address-block__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--accent);
}

.page-contact .address-block__value {
  margin: 14px 0 0;
  max-width: 32ch;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: clamp(1.1rem, 2.2vw, 1.6rem);
  line-height: 1.5;
  color: var(--ink);
}

.page-contact .address-block__note {
  margin: 18px 0 0;
  max-width: 58ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.page-contact .address-facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: 20px;
  background: var(--grid);
  border: var(--cp-rule);
}

.page-contact .address-facts__cell {
  background: var(--bg);
  padding: 16px 18px;
  min-width: 0;
}

.page-contact .address-facts__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-contact .address-facts__value {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink);
}

/* ---------- 06 节奏 ---------- */
.page-contact .rhythm-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--grid);
  border: var(--cp-rule);
}

.page-contact .rhythm-step {
  position: relative;
  background: var(--bg);
  padding: clamp(18px, 2.4vw, 26px);
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

.page-contact .rhythm-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent 78%);
}

.page-contact .rhythm-step__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.page-contact .rhythm-step__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 16px;
  color: var(--ink);
}

.page-contact .rhythm-step__text {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.72;
}

.page-contact .contact-rhythm__figure {
  display: block;
  margin: clamp(24px, 3.2vw, 36px) 0 0;
  border: var(--cp-rule);
  background: var(--rail);
}

.page-contact .contact-rhythm__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 640;
  object-fit: cover;
}

/* ---------- 站内跳转 ---------- */
.page-contact .contact-next {
  border-top: var(--cp-rule);
}

.page-contact .contact-next .chapter__title {
  margin-top: 0;
}

.page-contact .contact-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  margin-top: 24px;
}

.page-contact .link-arrow {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.03em;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(182, 255, 60, 0.35);
  padding-bottom: 3px;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-contact .link-arrow::after {
  content: " →";
}

.page-contact .link-arrow:hover {
  color: var(--accent-soft);
  border-bottom-color: var(--accent-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .contact-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .address-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .request-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .coop-split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .rhythm-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-contact .field-row {
    grid-template-columns: 56px minmax(0, 1fr) 240px;
    align-items: center;
    gap: 10px 24px;
  }

  .page-contact .field-row__no {
    padding-top: 0;
  }

  .page-contact .field-row__sample {
    grid-column: auto;
    padding-left: 18px;
  }
}

@media (min-width: 1024px) {
  .page-contact .page-shell {
    display: grid;
    grid-template-columns: 226px minmax(0, 1fr);
    gap: clamp(36px, 4.5vw, 72px);
    align-items: start;
  }

  .page-contact .contact-rail {
    display: block;
    position: sticky;
    top: calc(var(--header-offset) + 20px);
  }

  .page-contact .rhythm-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .contact-rhythm__figure {
    max-width: 860px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-rail .rail__link,
  .page-contact .link-arrow {
    transition: none;
  }
}
<<<END>>>