.page-contact {
  --co-line: rgba(14, 23, 32, .12);
  --co-line-soft: rgba(18, 75, 122, .28);
  --co-mint-veil: rgba(168, 233, 220, .16);
  --co-orange-veil: rgba(255, 106, 26, .14);
  --co-ink-soft: rgba(244, 247, 251, .72);
}

/* ---------- HERO ---------- */
.page-contact .co-hero {
  position: relative;
  color: var(--white);
  background:
    radial-gradient(120% 95% at 88% 8%, var(--co-mint-veil), transparent 58%),
    radial-gradient(95% 75% at 4% 98%, var(--co-orange-veil), transparent 62%),
    linear-gradient(158deg, var(--deep) 0%, var(--blue) 60%, var(--blue-mid) 100%);
  padding: calc(var(--header-h) + 52px) 0 68px;
  overflow: hidden;
}

.page-contact .co-hero__grid {
  display: grid;
  gap: 38px;
  align-items: center;
}

.page-contact .co-hero__crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: rgba(255, 255, 255, .58);
}

.page-contact .co-hero__crumb a {
  color: rgba(255, 255, 255, .78);
  text-decoration: none;
}

.page-contact .co-hero__crumb a:hover,
.page-contact .co-hero__crumb a:focus-visible {
  color: var(--mint);
}

.page-contact .co-hero__kicker {
  display: block;
  margin: 0 0 16px;
  color: var(--mint);
}

.page-contact .co-hero h1 {
  margin: 0 0 20px;
  font-size: clamp(32px, 6.2vw, 56px);
  line-height: 1.12;
  font-weight: 900;
  letter-spacing: -.015em;
}

.page-contact .co-hero__lede {
  max-width: 34em;
  margin: 0 0 30px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--co-ink-soft);
}

.page-contact .co-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .co-hero__media {
  position: relative;
  aspect-ratio: 2 / 1;
  border-radius: var(--radius-l);
  overflow: hidden;
  border: 1px solid rgba(168, 233, 220, .26);
  box-shadow: var(--shadow-2);
  background: var(--deep);
}

.page-contact .co-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- SECTION BASE ---------- */
.page-contact .section {
  padding: 64px 0;
}

.page-contact .co-head {
  max-width: 46em;
  margin-bottom: 38px;
}

.page-contact .co-head--tight {
  max-width: 40em;
}

.page-contact .co-head h2 {
  margin: 14px 0 14px;
  font-size: clamp(25px, 3.9vw, 38px);
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-contact .co-head__lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--slate);
}

.page-contact .co-inline-link {
  color: var(--blue-mid);
  text-decoration: underline;
  text-decoration-color: rgba(47, 212, 180, .7);
  text-underline-offset: 3px;
}

.page-contact .co-inline-link:hover,
.page-contact .co-inline-link:focus-visible {
  color: var(--orange);
  text-decoration-color: var(--orange);
}

/* ---------- 合作方向 ---------- */
.page-contact .co-directions {
  background: var(--paper);
}

.page-contact .co-cards {
  display: grid;
  gap: 18px;
}

.page-contact .co-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--co-line);
  border-radius: var(--radius-l);
  padding: 28px 24px 26px;
  box-shadow: var(--shadow-1);
  outline: none;
  transition: transform .18s var(--ease), box-shadow .18s var(--ease), border-color .18s var(--ease);
}

.page-contact .co-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 24px;
  right: 24px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: linear-gradient(90deg, var(--mint), var(--orange));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .26s var(--ease);
}

.page-contact .co-card:hover,
.page-contact .co-card:focus-visible,
.page-contact .co-card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(47, 212, 180, .5);
  box-shadow: var(--shadow-2);
}

.page-contact .co-card:hover::before,
.page-contact .co-card:focus-visible::before {
  transform: scaleX(1);
}

.page-contact .co-card__idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-bottom: 16px;
  border-radius: 50%;
  background: var(--co-mint-veil);
  color: var(--blue-mid);
  font-size: 13px;
}

.page-contact .co-card h3 {
  margin: 0 0 10px;
  font-size: 19px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .co-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--slate);
}

.page-contact .co-card__more {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  border-top: 1px dashed transparent;
  transition: max-height .26s var(--ease), opacity .2s var(--ease),
              margin-top .26s var(--ease), padding-top .26s var(--ease),
              border-color .26s var(--ease);
  color: var(--blue-mid);
  font-size: 14px;
}

.page-contact .co-card:hover .co-card__more,
.page-contact .co-card:focus-visible .co-card__more,
.page-contact .co-card:focus-within .co-card__more {
  max-height: 160px;
  opacity: 1;
  margin-top: 14px;
  padding-top: 12px;
  border-top-color: var(--co-line);
}

/* ---------- 对接流程 ---------- */
.page-contact .co-flow {
  background: var(--white);
}

.page-contact .co-flow__grid {
  display: grid;
  gap: 40px;
  align-items: start;
}

.page-contact .co-flow h2 {
  margin: 14px 0 12px;
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1.2;
  font-weight: 900;
  color: var(--ink);
}

.page-contact .co-flow__lede {
  max-width: 34em;
  margin: 0;
  font-size: 16px;
  line-height: 1.76;
  color: var(--slate);
}

.page-contact .co-steps {
  position: relative;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .co-step {
  position: relative;
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 16px;
  padding-bottom: 28px;
  outline: none;
}

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

.page-contact .co-step::after {
  content: "";
  position: absolute;
  left: 25px;
  top: 56px;
  bottom: 6px;
  border-left: 1px dashed var(--co-line-soft);
}

.page-contact .co-step:last-child::after {
  display: none;
}

.page-contact .co-step__num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: var(--paper);
  border: 1px solid var(--co-line);
  color: var(--blue-mid);
  font-size: 13px;
  letter-spacing: .04em;
  transition: background .18s var(--ease), color .18s var(--ease),
              border-color .18s var(--ease), transform .18s var(--ease);
}

.page-contact .co-step:hover .co-step__num,
.page-contact .co-step:focus-visible .co-step__num,
.page-contact .co-step:focus-within .co-step__num {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--white);
  transform: translateY(-2px);
}

.page-contact .co-step__text h3 {
  margin: 6px 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .co-step__text p {
  margin: 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--slate);
}

.page-contact .co-flow__media {
  aspect-ratio: 7 / 5;
  border-radius: var(--radius-l);
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--co-line);
  box-shadow: var(--shadow-1);
}

.page-contact .co-flow__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 联系渠道 ---------- */
.page-contact .co-connect {
  background: var(--paper);
}

.page-contact .co-channels {
  display: grid;
  gap: 18px;
}

.page-contact .co-channel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 26px 24px;
  background: var(--white);
  border: 1px solid var(--co-line);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-1);
  transition: transform .18s var(--ease), box-shadow .18s var(--ease);
}

.page-contact .co-channel:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.page-contact .co-channel__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 8px;
  border-radius: 14px;
  background: var(--co-orange-veil);
  color: var(--orange);
}

.page-contact .co-channel__k {
  margin: 0;
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .co-channel__v {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.55;
  font-weight: 500;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .co-channel__note {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .co-channel--main {
  justify-content: center;
  padding: 34px 28px;
  background:
    radial-gradient(110% 90% at 92% 6%, rgba(47, 212, 180, .2), transparent 60%),
    linear-gradient(150deg, var(--blue) 0%, var(--deep) 100%);
  border-color: transparent;
  color: var(--white);
  box-shadow: var(--shadow-2);
}

.page-contact .co-channel--main .co-channel__icon {
  width: 50px;
  height: 50px;
  background: rgba(255, 106, 26, .22);
  color: var(--orange-soft);
}

.page-contact .co-channel--main .co-channel__k {
  color: rgba(168, 233, 220, .88);
}

.page-contact .co-channel--main .co-channel__v {
  font-size: clamp(16px, 2.4vw, 21px);
  color: var(--white);
}

.page-contact .co-channel--main .co-channel__note {
  color: var(--co-ink-soft);
}

/* ---------- 服务时间 ---------- */
.page-contact .co-hours {
  background: var(--white);
}

.page-contact .co-hours__panel {
  display: grid;
  gap: 24px;
  padding: 32px 28px;
  border-radius: var(--radius-l);
  border: 1px solid var(--co-line);
  background:
    linear-gradient(180deg, var(--paper) 0%, var(--white) 100%);
  box-shadow: var(--shadow-1);
}

.page-contact .co-hours__clock {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-bottom: 22px;
  border-bottom: 1px dashed var(--co-line-soft);
}

.page-contact .co-hours__range {
  font-size: clamp(28px, 6vw, 44px);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: .01em;
  color: var(--blue);
}

.page-contact .co-hours__day {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--slate);
}

.page-contact .co-hours__day::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 4px rgba(47, 212, 180, .2);
}

.page-contact .co-hours__text h2 {
  margin: 0 0 12px;
  font-size: clamp(21px, 3.2vw, 28px);
  line-height: 1.28;
  font-weight: 900;
  color: var(--ink);
}

.page-contact .co-hours__text p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate);
}

.page-contact .co-hours__text p:last-child {
  margin-bottom: 0;
}

/* ---------- 常见疑问 ---------- */
.page-contact .co-faq {
  background: var(--paper);
}

.page-contact .co-faq__grid {
  display: grid;
  gap: 34px;
  align-items: start;
}

.page-contact .co-faq__aside h2 {
  margin: 14px 0 12px;
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.2;
  font-weight: 900;
  color: var(--ink);
}

.page-contact .co-faq__lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate);
}

.page-contact .co-faq__list {
  display: grid;
  gap: 12px;
}

.page-contact .co-faq__list .qa-item {
  background: var(--white);
  border: 1px solid var(--co-line);
  border-radius: var(--radius-m);
  overflow: hidden;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
}

.page-contact .co-faq__list .qa-item:hover {
  border-color: rgba(47, 212, 180, .5);
  box-shadow: var(--shadow-1);
}

.page-contact .co-faq__list .qa-item__trigger {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  background: none;
  border: 0;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--ink);
  cursor: pointer;
}

.page-contact .co-faq__list .qa-item__trigger::after {
  content: "";
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  margin-top: 7px;
  border-right: 2px solid var(--blue-mid);
  border-bottom: 2px solid var(--blue-mid);
  transform: rotate(45deg);
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .co-faq__list .qa-item__trigger[aria-expanded="true"]::after {
  transform: rotate(-135deg);
  border-color: var(--orange);
}

.page-contact .co-faq__list .qa-item__panel {
  padding: 0 20px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate);
}

.page-contact .co-faq__list .qa-item__panel p {
  margin: 0;
  padding-bottom: 20px;
}

.page-contact .co-faq__list .qa-item__trigger:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: -3px;
}

/* ---------- 内容反馈 ---------- */
.page-contact .co-feedback {
  background: var(--white);
  padding-bottom: 84px;
}

.page-contact .co-feedback__panel {
  display: grid;
  gap: 30px;
  padding: 34px 26px;
  border-radius: var(--radius-l);
  border: 1px solid var(--co-line);
  background: var(--paper);
}

.page-contact .co-feedback__body h2 {
  margin: 14px 0 14px;
  font-size: clamp(23px, 3.4vw, 32px);
  line-height: 1.22;
  font-weight: 900;
  color: var(--ink);
}

.page-contact .co-feedback__body p {
  max-width: 40em;
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

.page-contact .co-feedback__list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-contact .co-feedback__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-s);
  background: var(--white);
  border: 1px solid var(--co-line);
}

.page-contact .co-feedback__list span {
  flex: 0 0 auto;
  min-width: 5.5em;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--blue-mid);
}

.page-contact .co-feedback__list strong {
  font-weight: 500;
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .co-feedback__cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  padding: 26px 24px;
  border-radius: var(--radius-m);
  background: linear-gradient(150deg, var(--blue) 0%, var(--deep) 100%);
  color: var(--white);
}

.page-contact .co-feedback__cta-text {
  margin: 0;
  font-size: 16px;
  line-height: 1.65;
  color: var(--co-ink-soft);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 899px) {
  .page-contact .co-card__more {
    max-height: none;
    opacity: 1;
    margin-top: 14px;
    padding-top: 12px;
    border-top-color: var(--co-line);
  }

  .page-contact .co-step {
    grid-template-columns: 46px 1fr;
    gap: 14px;
  }

  .page-contact .co-step__num {
    width: 40px;
    height: 40px;
    border-radius: 12px;
  }

  .page-contact .co-step::after {
    left: 23px;
    top: 50px;
  }
}

@media (min-width: 720px) {
  .page-contact .co-channels {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .co-channel--main {
    grid-column: 1 / -1;
  }

  .page-contact .co-hours__panel {
    grid-template-columns: minmax(200px, 260px) 1fr;
    align-items: center;
    gap: 34px;
    padding: 40px 36px;
  }

  .page-contact .co-hours__clock {
    padding-bottom: 0;
    padding-right: 30px;
    border-bottom: 0;
    border-right: 1px dashed var(--co-line-soft);
  }

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

@media (min-width: 900px) {
  .page-contact .section {
    padding: 96px 0;
  }

  .page-contact .co-hero {
    padding: calc(var(--header-h) + 70px) 0 96px;
  }

  .page-contact .co-hero__grid {
    grid-template-columns: repeat(12, 1fr);
    gap: 48px;
  }

  .page-contact .co-hero__copy {
    grid-column: 1 / span 6;
  }

  .page-contact .co-hero__media {
    grid-column: 7 / span 6;
  }

  .page-contact .co-cards {
    grid-template-columns: repeat(12, 1fr);
    gap: 22px;
    align-items: start;
  }

  .page-contact .co-card--a {
    grid-column: 1 / span 7;
    padding: 34px 30px 32px;
  }

  .page-contact .co-card--b {
    grid-column: 8 / span 5;
    margin-top: 44px;
  }

  .page-contact .co-card--c {
    grid-column: 1 / span 5;
    margin-top: 12px;
  }

  .page-contact .co-card--d {
    grid-column: 6 / span 7;
    padding: 34px 30px 32px;
  }

  .page-contact .co-flow__grid {
    grid-template-columns: repeat(12, 1fr);
    gap: 56px;
  }

  .page-contact .co-flow__body {
    grid-column: 1 / span 7;
  }

  .page-contact .co-flow__media {
    grid-column: 8 / span 5;
    margin-top: 26px;
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-contact .co-channels {
    grid-template-columns: repeat(12, 1fr);
    gap: 22px;
  }

  .page-contact .co-channel--main {
    grid-column: 1 / span 7;
    grid-row: 1 / span 2;
    padding: 44px 36px;
  }

  .page-contact .co-channel:nth-of-type(2) {
    grid-column: 8 / span 5;
  }

  .page-contact .co-channel:nth-of-type(3) {
    grid-column: 8 / span 5;
  }

  .page-contact .co-faq__grid {
    grid-template-columns: repeat(12, 1fr);
    gap: 48px;
  }

  .page-contact .co-faq__aside {
    grid-column: 1 / span 4;
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-contact .co-faq__list {
    grid-column: 5 / span 8;
  }

  .page-contact .co-feedback__panel {
    grid-template-columns: 1fr minmax(240px, 300px);
    gap: 40px;
    align-items: start;
    padding: 46px 40px;
  }

  .page-contact .co-feedback {
    padding-bottom: 110px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-card,
  .page-contact .co-card__more,
  .page-contact .co-card::before,
  .page-contact .co-step__num,
  .page-contact .co-channel {
    transition: none;
  }

  .page-contact .co-card:hover,
  .page-contact .co-card:focus-visible {
    transform: none;
  }
}