/* ===== 联系我们 · page-contact ===== */

.page-contact {
  position: relative;
  color: var(--glass-white);
  font-family: var(--font-body);
  background:
    radial-gradient(920px 520px at 6% -6%, rgba(168, 85, 247, .18), transparent 62%),
    radial-gradient(760px 460px at 98% 12%, rgba(34, 211, 238, .14), transparent 60%),
    var(--ink-900);
  padding-block: clamp(16px, 3vw, 30px) clamp(52px, 8vw, 100px);
  overflow-x: clip;
}

.page-contact::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(168, 85, 247, .5), rgba(34, 211, 238, .5), transparent);
  pointer-events: none;
}

.page-contact .breadcrumb {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--archive-blue);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding-block: clamp(10px, 1.6vw, 16px) 0;
}

.page-contact .breadcrumb a {
  color: var(--neon-cyan);
  text-decoration: none;
}

.page-contact .breadcrumb a:hover {
  text-decoration: underline;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  display: grid;
  gap: 14px;
  max-width: 52ch;
  margin-block: clamp(20px, 3.2vw, 36px) clamp(26px, 4vw, 46px);
}

.page-contact .contact-hero .eyebrow {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--neon-cyan);
}

.page-contact .contact-hero .title-xl {
  margin: 0;
  line-height: 1.16;
}

.page-contact .contact-hero .lede {
  margin: 0;
  max-width: 46ch;
}

/* ---------- 双通道分屏 ---------- */

.page-contact .split-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: linear-gradient(180deg, var(--neon-purple), var(--neon-cyan));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 26px 74px -44px var(--glow-purple);
}

.page-contact .channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2.2vw, 22px);
  padding: clamp(22px, 3vw, 38px);
  background: var(--ink-800);
  transition: background .35s var(--ease), box-shadow .35s var(--ease);
}

.page-contact .channel--service {
  border-left: 3px solid var(--neon-purple);
}

.page-contact .channel--submit {
  border-left: 3px solid var(--neon-cyan);
}

.page-contact .channel--service:hover {
  background: linear-gradient(180deg, rgba(168, 85, 247, .14), var(--ink-800) 62%);
  box-shadow: inset 0 0 46px -18px var(--glow-purple);
}

.page-contact .channel--submit:hover {
  background: linear-gradient(180deg, rgba(34, 211, 238, .12), var(--ink-800) 62%);
  box-shadow: inset 0 0 46px -18px var(--glow-cyan);
}

.page-contact .channel__head {
  display: grid;
  gap: 10px;
}

.page-contact .channel__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--archive-blue);
}

.page-contact .channel__eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--neon-purple);
  box-shadow: 0 0 10px var(--glow-purple);
}

.page-contact .channel--submit .channel__eyebrow::before {
  background: var(--neon-cyan);
  box-shadow: 0 0 10px var(--glow-cyan);
}

.page-contact .channel__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.2vw, 31px);
  line-height: 1.22;
  letter-spacing: .01em;
  color: var(--glass-white);
}

.page-contact .channel--service .channel__title {
  text-shadow: 0 0 22px rgba(168, 85, 247, .5);
}

.page-contact .channel--submit .channel__title {
  text-shadow: 0 0 22px rgba(34, 211, 238, .42);
}

.page-contact .channel__desc {
  margin: 0;
  max-width: 40ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--archive-blue);
}

.page-contact .channel__desc a {
  color: var(--neon-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 238, .45);
}

.page-contact .channel__desc a:hover {
  border-bottom-color: var(--neon-cyan);
}

.page-contact .channel__note {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--line);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--archive-blue);
}

.page-contact .channel__subtitle {
  margin: 4px 0 0;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--glass-white);
}

/* ---------- 图片位 ---------- */

.page-contact .channel__media {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background: var(--ink-700);
}

.page-contact .channel__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.92) contrast(1.04);
}

.page-contact .media-frame__label {
  font-size: 12px;
  letter-spacing: .1em;
}

/* ---------- 联系方式行 ---------- */

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

.page-contact .contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 16px;
  padding: 12px 15px;
  border-radius: var(--radius-sm);
  background: var(--glass);
  border: 1px solid var(--line-soft);
}

.page-contact .contact-row__key {
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--archive-blue);
}

.page-contact .contact-row__val {
  font-family: var(--font-num);
  font-size: 15px;
  letter-spacing: .02em;
  color: var(--glass-white);
  word-break: break-word;
}

/* ---------- 投稿清单 ---------- */

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

.page-contact .checklist li {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--glass-white);
}

.page-contact .checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--neon-cyan);
  box-shadow: 0 0 10px var(--glow-cyan);
}

/* ---------- 时效轨道 ---------- */

.page-contact .sla {
  margin-top: auto;
  display: grid;
  gap: 9px;
  padding-top: clamp(14px, 2vw, 20px);
  border-top: 1px dashed var(--line-soft);
}

.page-contact .sla__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-contact .sla__key {
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--archive-blue);
}

.page-contact .sla__val {
  font-family: var(--font-num);
  font-size: 17px;
  letter-spacing: .04em;
  color: var(--rank-orange);
}

.page-contact .sla__track {
  display: block;
  height: 6px;
  border-radius: 99px;
  background: rgba(109, 91, 168, .24);
  overflow: hidden;
}

.page-contact .sla__fill {
  display: block;
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--rank-orange), var(--pulse-magenta));
  box-shadow: 0 0 14px rgba(255, 138, 61, .5);
}

.page-contact .sla__fill--fast { width: 38%; }
.page-contact .sla__fill--norm { width: 72%; }

/* ---------- 商务合作 ---------- */

.page-contact .coop {
  margin-top: clamp(32px, 5vw, 60px);
}

.page-contact .coop__head {
  display: grid;
  gap: 10px;
  max-width: 46ch;
}

.page-contact .coop__head .eyebrow {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--pulse-magenta);
}

.page-contact .coop__head .section-title {
  margin: 0;
}

.page-contact .coop__lede {
  margin: 0;
  font-family: var(--font-editorial);
  font-size: 16px;
  line-height: 1.85;
  color: var(--archive-blue);
}

.page-contact .accordion {
  display: grid;
  gap: 1px;
  margin-top: clamp(18px, 2.6vw, 28px);
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-contact .accordion-item {
  background: var(--ink-800);
  transition: background .3s var(--ease);
}

.page-contact .accordion-item:hover {
  background: var(--ink-700);
}

.page-contact .accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 18px clamp(16px, 2.4vw, 26px);
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--glass-white);
  background: transparent;
  border: 0;
  text-align: left;
  cursor: pointer;
  transition: color .25s var(--ease);
}

.page-contact .accordion-trigger::after {
  content: "+";
  font-family: var(--font-num);
  font-size: 20px;
  line-height: 1;
  color: var(--neon-cyan);
  transition: color .25s var(--ease);
}

.page-contact .accordion-trigger:hover {
  color: var(--neon-cyan);
}

.page-contact .accordion-trigger[aria-expanded="true"] {
  color: var(--rank-orange);
}

.page-contact .accordion-trigger[aria-expanded="true"]::after {
  content: "−";
  color: var(--rank-orange);
}

.page-contact .accordion-panel {
  padding: 0 clamp(16px, 2.4vw, 26px) 20px;
  border-left: 2px solid transparent;
  transition: border-color .3s var(--ease);
}

.page-contact .accordion-trigger[aria-expanded="true"] + .accordion-panel {
  border-left-color: var(--rank-orange);
}

.page-contact .accordion-panel p {
  margin: 0 0 10px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--archive-blue);
}

.page-contact .accordion-panel p:last-child {
  margin-bottom: 0;
}

.page-contact .accordion-panel a {
  color: var(--neon-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 238, .45);
}

.page-contact .accordion-panel a:hover {
  border-bottom-color: var(--neon-cyan);
}

/* ---------- 联络信息横条 ---------- */

.page-contact .contact-bar {
  margin-top: clamp(32px, 5vw, 58px);
  padding: clamp(22px, 3vw, 34px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, .08), rgba(255, 255, 255, .03)),
    linear-gradient(120deg, rgba(168, 85, 247, .16), rgba(34, 211, 238, .12));
  backdrop-filter: blur(10px);
}

.page-contact .contact-bar__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2.2vw, 24px);
}

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

.page-contact .contact-bar__key {
  display: block;
  margin-bottom: 6px;
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--archive-blue);
}

.page-contact .contact-bar__val {
  display: block;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--glass-white);
  word-break: break-word;
}

.page-contact .contact-bar__val--num {
  font-family: var(--font-num);
  letter-spacing: .02em;
}

.page-contact .contact-bar__hint {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  padding-top: clamp(14px, 2vw, 20px);
  border-top: 1px dashed rgba(109, 91, 168, .5);
  max-width: 72ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--archive-blue);
}

/* ---------- 提交前提示 ---------- */

.page-contact .tips {
  margin-top: clamp(34px, 5vw, 62px);
}

.page-contact .tips__head {
  display: grid;
  gap: 10px;
  max-width: 48ch;
}

.page-contact .tips__head .section-title {
  margin: 0;
}

.page-contact .tips__lede {
  margin: 0;
  font-family: var(--font-editorial);
  font-size: 16px;
  line-height: 1.85;
  color: var(--archive-blue);
}

.page-contact .tips__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 20px);
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-contact .tip {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(255, 255, 255, .05), rgba(255, 255, 255, .015));
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}

.page-contact .tip:hover {
  border-color: var(--glass-line);
  transform: translateY(-2px);
}

.page-contact .tip__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-num);
  font-size: 22px;
  letter-spacing: .06em;
  color: var(--neon-purple);
  text-shadow: 0 0 16px var(--glow-purple);
}

.page-contact .tip__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--glass-white);
}

.page-contact .tip p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--archive-blue);
}

.page-contact .tips__foot {
  margin: clamp(20px, 3vw, 30px) 0 0;
  max-width: 70ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--archive-blue);
}

.page-contact .tips__foot a {
  color: var(--neon-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 238, .45);
}

.page-contact .tips__foot a:hover {
  border-bottom-color: var(--neon-cyan);
}

/* ---------- 断点 ---------- */

@media (min-width: 640px) {
  .page-contact .contact-bar__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-contact .split-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 520px) {
  .page-contact .contact-row {
    justify-content: flex-start;
  }

  .page-contact .channel__media img {
    aspect-ratio: 4 / 3;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .tip,
  .page-contact .accordion-item,
  .page-contact .accordion-panel {
    transition: none;
  }

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