.page-contact {
  --c-gap: 16px;
  --c-radius: 16px;
  --c-pad-y: clamp(30px, 5.5vw, 60px);
}

/* ---------- 通用小件 ---------- */
.page-contact .c-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .c-kicker::before {
  content: "";
  width: 20px;
  height: 2px;
  background: var(--orange);
}

.page-contact .c-link {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .c-link:hover,
.page-contact .c-link:focus-visible {
  color: var(--orange);
}

.page-contact .c-shot {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--c-radius);
  overflow: hidden;
  background: var(--stand);
  box-shadow: var(--shadow);
}

.page-contact .c-shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 首屏 ---------- */
.page-contact .c-hero {
  padding-block: clamp(24px, 5vw, 58px) clamp(20px, 3.5vw, 34px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 170% at 92% -30%, rgba(255, 106, 26, 0.2), transparent 58%),
    radial-gradient(90% 130% at -6% 120%, rgba(37, 224, 208, 0.14), transparent 62%);
}

.page-contact .c-hero__inner {
  display: grid;
  gap: 16px;
  max-width: 920px;
}

.page-contact h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 6vw, 3.4rem);
  line-height: 1.07;
  letter-spacing: -0.02em;
  color: var(--white);
  text-wrap: balance;
}

.page-contact .c-hero__lede {
  max-width: 66ch;
  margin: 0;
  color: var(--slate);
  font-size: clamp(15px, 2.4vw, 17px);
  line-height: 1.78;
}

.page-contact .c-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.page-contact .c-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(13, 39, 64, 0.75);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--white);
}

.page-contact .c-chip::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--slate);
}

.page-contact .c-chip--live::before {
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 106, 26, 0.18);
}

.page-contact .c-chip--data {
  color: var(--cyan);
  border-color: rgba(37, 224, 208, 0.32);
}

.page-contact .c-chip--data::before {
  background: var(--cyan);
}

.page-contact .c-chip--new {
  color: var(--magenta);
  border-color: rgba(255, 61, 127, 0.32);
}

.page-contact .c-chip--new::before {
  background: var(--magenta);
}

/* ---------- 双栏联络台 ---------- */
.page-contact .c-desk {
  padding-block: var(--c-pad-y);
}

.page-contact .c-desk__grid {
  display: grid;
  gap: 22px;
}

.page-contact .c-kiosk {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 12px;
  padding: 22px 20px 20px;
  border: 1px solid var(--line-strong);
  border-radius: var(--c-radius);
  background: linear-gradient(158deg, rgba(13, 39, 64, 0.97), rgba(6, 22, 39, 0.97));
  box-shadow: var(--shadow);
}

.page-contact .c-kiosk::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--orange), var(--cyan));
}

.page-contact .c-kiosk__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  color: var(--white);
}

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

.page-contact .c-kiosk__list {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-contact .c-kiosk__row {
  display: grid;
  gap: 3px;
  padding-bottom: 13px;
  border-bottom: 1px dashed var(--line);
}

.page-contact .c-kiosk__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .c-kiosk__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate);
}

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

.page-contact .c-kiosk__v--mail {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cyan);
}

.page-contact .c-kiosk__v--tel {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-contact .c-kiosk__cta {
  justify-self: start;
  margin-top: 4px;
}

.page-contact .c-kiosk__foot {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 分类入口 ---------- */
.page-contact .c-channels__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  margin-bottom: 16px;
}

.page-contact .c-channels__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.25rem, 3.4vw, 1.7rem);
  letter-spacing: -0.015em;
  color: var(--white);
}

.page-contact .c-channels__note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--slate);
}

.page-contact .c-channels__grid {
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
  gap: var(--c-gap);
}

.page-contact .c-chan {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 18px 16px;
  border: 1px solid var(--line);
  border-radius: var(--c-radius);
  background: var(--stand);
  color: inherit;
  text-decoration: none;
  transition: border-color var(--dur) ease, background-color var(--dur) ease, transform var(--dur) ease;
}

.page-contact .c-chan:hover {
  border-color: rgba(255, 106, 26, 0.6);
  background: #10314f;
  transform: translateY(-2px);
}

.page-contact .c-chan:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-contact .c-chan__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-contact .c-chan__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.12rem;
  color: var(--white);
}

.page-contact .c-chan__body {
  margin: 0;
  color: var(--slate);
  font-size: 14.5px;
  line-height: 1.75;
}

.page-contact .c-chan__go {
  margin-top: auto;
  padding-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--orange);
}

.page-contact .c-chan--1 { min-height: 154px; }
.page-contact .c-chan--2 { min-height: 186px; }
.page-contact .c-chan--3 { min-height: 172px; }
.page-contact .c-chan--4 { min-height: 138px; }

.page-contact .c-channels__shot {
  margin-top: 4px;
}

/* ---------- 提交清单 ---------- */
.page-contact .c-checklist {
  padding-block: var(--c-pad-y);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(11, 59, 62, 0.35), transparent 70%);
}

.page-contact .c-checklist__grid {
  display: grid;
  gap: 24px;
}

.page-contact .c-checklist__title {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 4.2vw, 2.1rem);
  Letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--white);
}

.page-contact .c-checklist__text {
  max-width: 56ch;
  margin: 0;
  color: var(--slate);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-contact .c-check {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .c-check__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(13, 39, 64, 0.62);
  cursor: pointer;
  transition: border-color var(--dur) ease, background-color var(--dur) ease;
}

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

.page-contact .c-check__item:has(.c-check__box:checked) {
  border-color: rgba(91, 212, 110, 0.55);
  background: rgba(91, 212, 110, 0.09);
}

.page-contact .c-check__box {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin: 2px 0 0;
  border: 1.5px solid var(--line-strong);
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
  flex: none;
}

.page-contact .c-check__box:checked {
  background-color: var(--green);
  border-color: var(--green);
  box-shadow: inset 0 0 0 3px var(--navy);
}

.page-contact .c-check__box:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-contact .c-check__label {
  color: var(--white);
  font-size: 15px;
  line-height: 1.65;
  cursor: pointer;
}

.page-contact .c-check__hint {
  display: block;
  margin-top: 3px;
  color: var(--slate);
  font-size: 13.5px;
  line-height: 1.65;
}

/* ---------- 合作章节 ---------- */
.page-contact .c-coop {
  padding-block: var(--c-pad-y);
  border-block: 1px solid var(--line-strong);
  background:
    radial-gradient(80% 130% at 100% 0%, rgba(37, 224, 208, 0.17), transparent 62%),
    linear-gradient(142deg, var(--teal) 0%, #0f2b3f 56%, var(--indigo) 100%);
}

.page-contact .c-coop__head {
  display: grid;
  gap: 10px;
  max-width: 780px;
}

.page-contact .c-coop__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 4.4vw, 2.2rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-contact .c-coop__note {
  margin: 0;
  color: rgba(244, 248, 252, 0.78);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-contact .c-coop__grid {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.page-contact .c-coop__item {
  display: grid;
  gap: 8px;
  padding: 18px 18px 16px;
  border: 1px solid rgba(244, 248, 252, 0.16);
  border-radius: var(--c-radius);
  background: rgba(6, 22, 39, 0.42);
}

.page-contact .c-coop__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--white);
}

.page-contact .c-coop__text {
  margin: 0;
  color: rgba(244, 248, 252, 0.76);
  font-size: 14.5px;
  line-height: 1.78;
}

.page-contact .c-coop__meta {
  margin: 0;
  padding-top: 6px;
  border-top: 1px dashed rgba(244, 248, 252, 0.2);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-contact .c-fold {
  margin-top: 26px;
  border-top: 1px solid rgba(244, 248, 252, 0.18);
}

.page-contact .c-fold__item {
  border-bottom: 1px solid rgba(244, 248, 252, 0.18);
}

.page-contact .c-fold__sum {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 54px;
  padding: 14px 2px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--white);
}

.page-contact .c-fold__sum::-webkit-details-marker {
  display: none;
}

.page-contact .c-fold__sum:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-contact .c-fold__sum::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--cyan);
}

.page-contact .c-fold__item[open] .c-fold__sum::after {
  content: "–";
}

.page-contact .c-fold__body {
  padding: 0 2px 18px;
  color: rgba(244, 248, 252, 0.76);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 后续节奏 ---------- */
.page-contact .c-flow {
  padding-block: var(--c-pad-y);
}

.page-contact .c-flow__grid {
  display: grid;
  gap: 26px;
}

.page-contact .c-flow__title {
  margin: 8px 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.45rem, 4vw, 2rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-contact .c-flow__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .c-flow__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 16px 0;
  border-top: 1px dashed var(--line);
}

.page-contact .c-flow__item:last-child {
  border-bottom: 1px dashed var(--line);
}

.page-contact .c-flow__num {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-contact .c-flow__name {
  margin: 0 0 5px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.02rem;
  color: var(--white);
}

.page-contact .c-flow__text {
  margin: 0;
  color: var(--slate);
  font-size: 14.5px;
  line-height: 1.78;
}

.page-contact .c-flow__aside {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-contact .c-flow__aside .mono {
  color: var(--navy);
  font-weight: 700;
  white-space: nowrap;
}

.page-contact .c-flow__hint {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact {
    --c-gap: 18px;
  }

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

  .page-contact .c-channels__shot {
    grid-column: 1 / -1;
    margin-top: 2px;
  }

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

@media (min-width: 940px) {
  .page-contact .c-desk__grid {
    grid-template-columns: 316px minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }

  .page-contact .c-kiosk {
    position: sticky;
    top: 24px;
    padding: 24px 22px 22px;
  }

  .page-contact .c-checklist__grid {
    grid-template-columns: minmax(0, 1fr) 404px;
    gap: 34px;
    align-items: start;
  }

  .page-contact .c-flow__grid {
    grid-template-columns: minmax(0, 1fr) 400px;
    gap: 36px;
    align-items: start;
  }

  .page-contact .c-coop__note {
    font-size: 16px;
  }
}

@media (min-width: 1180px) {
  .page-contact .c-desk__grid {
    grid-template-columns: 340px minmax(0, 1fr);
    gap: 32px;
  }

  .page-contact .c-checklist__grid {
    grid-template-columns: minmax(0, 1fr) 440px;
    gap: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .c-chan,
  .page-contact .c-check__item {
    transition: none;
  }

  .page-contact .c-chan:hover {
    transform: none;
  }
}
</main>