.page-contact {
  --cc-accent: var(--yellow);
  --cc-ring: rgba(245, 197, 66, 0.42);
  background: var(--night);
  color: var(--white);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* ---------- Hero ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(24px, 4vw, 46px) 0 clamp(48px, 6vw, 92px);
}

.page-contact .contact-hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
  overflow: hidden;
}

.page-contact .contact-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(8, 21, 46, 0.74) 0%, rgba(8, 21, 46, 0.9) 58%, var(--night) 100%),
    repeating-linear-gradient(0deg, rgba(147, 166, 198, 0.07) 0 1px, transparent 1px 6px);
}

.page-contact .contact-hero__inner {
  position: relative;
}

.page-contact .contact-hero .breadcrumbs {
  margin-bottom: clamp(26px, 5vw, 62px);
}

.page-contact .contact-hero .eyebrow {
  color: var(--yellow);
  letter-spacing: 0.24em;
  margin-bottom: 12px;
}

.page-contact .contact-hero__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(34px, 7.2vw, 88px);
  line-height: 1;
  letter-spacing: -0.02em;
  max-width: 16ch;
  margin: 0 0 clamp(16px, 2.4vw, 28px);
}

.page-contact .contact-hero__lead {
  max-width: 58ch;
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.85;
  color: rgba(244, 247, 255, 0.82);
  margin: 0;
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: clamp(22px, 3vw, 34px);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--grey);
}

.page-contact .contact-hero__meta span {
  border-left: 2px solid var(--line);
  padding-left: 10px;
  overflow-wrap: anywhere;
}

/* ---------- 渠道区 ---------- */
.page-contact .section-head {
  max-width: 64ch;
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-contact .section-head .section-title {
  margin: 10px 0 14px;
}

.page-contact .contact-wave {
  display: none;
  width: 100%;
  height: 68px;
  margin: 0 0 -26px;
}

.page-contact .contact-wave__line {
  fill: none;
  stroke: var(--line);
  stroke-width: 1.5;
  stroke-dasharray: 5 9;
}

.page-contact .contact-wave__dots circle {
  fill: var(--yellow);
  opacity: 0.85;
}

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
  padding: clamp(24px, 3vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(165deg, #14315c 0%, var(--panel) 62%, #0b1c39 100%);
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 4px;
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  background: var(--accent, var(--yellow));
}

.page-contact .channel-card--mail { --accent: var(--yellow); }
.page-contact .channel-card--phone { --accent: var(--blue); }
.page-contact .channel-card--post { --accent: var(--green); }

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-visible,
.page-contact .channel-card:focus-within {
  transform: translateY(-6px);
  border-color: rgba(245, 197, 66, 0.45);
  box-shadow: var(--shadow);
  outline: none;
}

.page-contact .channel-card:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 3px;
}

.page-contact .channel-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 4px;
}

.page-contact .channel-card__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--grey);
}

.page-contact .channel-card__name {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 700;
  color: var(--white);
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.9vw, 20px);
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--yellow);
  overflow-wrap: anywhere;
}

.page-contact .channel-card--phone .channel-card__value { color: var(--blue); }
.page-contact .channel-card--post .channel-card__value { color: var(--green); font-size: clamp(14px, 1.6vw, 17px); }

.page-contact .channel-card__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(244, 247, 255, 0.72);
}

.page-contact .channel-card__topics {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .channel-card__topics li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--grey);
}

.page-contact .channel-card__topics li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 2px;
  background: var(--accent, var(--yellow));
}

/* ---------- 数据疑问 ---------- */
.page-contact .section--mist {
  background: var(--mist);
  color: var(--ink);
}

.page-contact .section--mist .section-title,
.page-contact .section--mist h3 {
  color: var(--ink);
}

.page-contact .section--mist .lead,
.page-contact .section--mist p {
  color: var(--ink-soft);
}

.page-contact .section--mist .eyebrow {
  color: #7a8aa4;
}

.page-contact .submit-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
}

.page-contact .submit-list > li {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: clamp(14px, 2.4vw, 26px);
  padding: clamp(16px, 2.4vw, 24px) 0;
  border-top: 1px solid rgba(27, 58, 107, 0.22);
}

.page-contact .submit-list > li:last-child {
  border-bottom: 1px solid rgba(27, 58, 107, 0.22);
}

.page-contact .submit-list__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: #5d7ba8;
  padding-top: 4px;
}

.page-contact .submit-list__body h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: clamp(16px, 1.9vw, 19px);
  font-weight: 700;
}

.page-contact .submit-list__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  max-width: 62ch;
}

/* ---------- 建议与更正 ---------- */
.page-contact .revise-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 54px);
}

.page-contact .revise-grid__text .section-title {
  margin: 10px 0 14px;
}

.page-contact .revise-grid__text .lead {
  max-width: 46ch;
}

.page-contact .flow-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .flow-steps__item {
  position: relative;
  padding: 18px 0 18px clamp(52px, 6vw, 70px);
  border-top: 1px solid var(--line);
}

.page-contact .flow-steps__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .flow-steps__num {
  position: absolute;
  left: 0;
  top: 18px;
  width: clamp(34px, 4vw, 46px);
  font-family: var(--font-mono);
  font-size: clamp(16px, 2vw, 22px);
  color: var(--yellow);
  letter-spacing: 0.02em;
}

.page-contact .flow-steps__item h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
}

.page-contact .flow-steps__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(244, 247, 255, 0.74);
}

/* ---------- 合作咨询 ---------- */
.page-contact .coop__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 54px);
  align-items: center;
}

.page-contact .coop__text .section-title {
  margin: 10px 0 16px;
}

.page-contact .coop__text .lead {
  max-width: 52ch;
}

.page-contact .coop__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .coop__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(244, 247, 255, 0.82);
}

.page-contact .coop__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 2px;
  background: var(--blue);
}

.page-contact .coop__note {
  margin: 22px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--yellow);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--grey);
  overflow-wrap: anywhere;
}

.page-contact .coop__note .num {
  color: var(--white);
}

.page-contact .coop__figure {
  margin: 0;
}

/* ---------- 回复节奏 ---------- */
.page-contact .cadence {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-contact .cadence__item {
  position: relative;
  padding: clamp(22px, 3vw, 30px);
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: var(--panel);
  border-left: 4px solid var(--band, var(--yellow));
}

.page-contact .cadence__item--yellow { --band: var(--yellow); }
.page-contact .cadence__item--green { --band: var(--green); }
.page-contact .cadence__item--blue { --band: var(--blue); }

.page-contact .cadence__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--band, var(--yellow));
  margin-bottom: 10px;
}

.page-contact .cadence__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 247, 255, 0.78);
}

.page-contact .cadence__footnote {
  margin: 22px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--grey);
  max-width: 72ch;
}

/* ---------- 底部联系 ---------- */
.page-contact .contact-foot__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.5vw, 48px);
  padding: clamp(24px, 3.4vw, 40px);
}

.page-contact .contact-foot__col .section-title {
  margin: 0 0 18px;
  font-size: clamp(18px, 2.2vw, 24px);
}

.page-contact .contact-foot__list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-foot__list .contact-list__item {
  display: grid;
  gap: 4px;
}

.page-contact .contact-foot__list .contact-list__key {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--grey);
}

.page-contact .contact-foot__list .contact-list__value {
  font-size: 15px;
  line-height: 1.6;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .contact-foot__list .num {
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}

.page-contact .contact-foot__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .contact-foot__links a {
  display: block;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  color: var(--blue);
  font-size: 15px;
  line-height: 1.6;
  text-decoration: none;
  transition: color 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.page-contact .contact-foot__links a:hover,
.page-contact .contact-foot__links a:focus-visible {
  color: var(--yellow);
  border-color: rgba(245, 197, 66, 0.55);
  transform: translateX(4px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 860px) {
  .page-contact .contact-wave {
    display: block;
  }

  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-contact .channel-card:nth-child(2) {
    margin-top: 26px;
  }

  .page-contact .channel-card:nth-child(3) {
    margin-top: 52px;
  }

  .page-contact .channel-card__topics {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    margin-top: 0;
    transition: max-height 0.4s ease, opacity 0.3s ease, margin-top 0.35s ease;
  }

  .page-contact .channel-card:hover .channel-card__topics,
  .page-contact .channel-card:focus .channel-card__topics,
  .page-contact .channel-card:focus-within .channel-card__topics {
    max-height: 220px;
    opacity: 1;
    margin-top: 14px;
  }

  .page-contact .revise-grid {
    grid-template-columns: 0.85fr 1.15fr;
    align-items: start;
  }

  .page-contact .coop__grid {
    grid-template-columns: 1.1fr 0.9fr;
  }

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

  .page-contact .contact-foot__panel {
    grid-template-columns: 1.05fr 0.95fr;
  }
}

@media (min-width: 1080px) {
  .page-contact .contact-hero {
    padding-bottom: clamp(70px, 7vw, 118px);
  }

  .page-contact .submit-list__body p {
    font-size: 15.5px;
  }
}