/* ================= 联系与反馈页 ================= */
.page-contact {
  --pc-line: var(--frost);
  --pc-radius: var(--r-lg);
  background: var(--cloud);
  overflow-x: hidden;
}

.page-contact .container {
  box-sizing: border-box;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding-block: 26px 40px;
  background:
    radial-gradient(120% 86% at 90% -6%, rgba(24, 118, 224, .14), transparent 62%),
    radial-gradient(76% 62% at -6% 4%, rgba(255, 106, 43, .11), transparent 60%);
}

.page-contact .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--track);
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.page-contact .breadcrumb a {
  color: var(--track);
  text-decoration: none;
  transition: color .2s var(--ease);
}

.page-contact .breadcrumb a:hover { color: var(--sky); }

.page-contact .breadcrumb__sep { color: var(--frost); }

.page-contact .breadcrumb__current {
  color: var(--space);
  font-weight: 700;
}

.page-contact .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .16em;
  color: var(--sky);
}

.page-contact .eyebrow::before {
  content: "";
  width: 22px;
  height: 3px;
  border-radius: 2px;
  background: var(--orange);
}

.page-contact .hero-title {
  margin: 0 0 18px;
  max-width: 20ch;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(1.95rem, 6.4vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -.012em;
  color: var(--space);
}

.page-contact .hero-lede {
  max-width: 620px;
  margin: 0 0 26px;
  font-size: clamp(1rem, 2.2vw, 1.1rem);
  line-height: 1.8;
  color: var(--track);
}

.page-contact .quick-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 34px;
}

.page-contact .quick-contact__item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 10px 12px 10px 16px;
  border: 1px solid var(--frost);
  border-radius: 999px;
  background: var(--paper);
  box-shadow: var(--sh-1);
  max-width: 100%;
}

.page-contact .quick-contact__label {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
  color: var(--track);
  flex: none;
}

.page-contact .quick-contact__value {
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 700;
  color: var(--space);
  font-variant-numeric: tabular-nums;
  word-break: break-all;
}

.page-contact .copy-btn {
  border: 1px solid rgba(24, 118, 224, .3);
  background: rgba(24, 118, 224, .08);
  color: var(--sky);
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .06em;
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
  white-space: nowrap;
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .hero-media {
  margin: 0;
  border-radius: var(--pc-radius);
  overflow: hidden;
  box-shadow: var(--sh-2);
}

/* ---------- 通用章节 ---------- */
.page-contact .section-title {
  margin: 0 0 10px;
  max-width: 24ch;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.8vw, 2.25rem);
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--space);
}

.page-contact .channels { padding-block: 56px 24px; }

.page-contact .timing { padding-block: 60px 48px; }

.page-contact .feedback { padding-block: 56px 48px; }

/* ---------- 通道卡 ---------- */
.page-contact .channel-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 32px;
}

.page-contact .channel-card {
  position: relative;
  padding: 30px 22px 24px;
  border: 1px solid var(--frost);
  border-radius: var(--pc-radius);
  background: var(--paper);
  box-shadow: var(--sh-1);
  overflow: hidden;
  transition: transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: var(--sky);
}

.page-contact .channel-card--phone::before { background: var(--sky-deep); }
.page-contact .channel-card--form::before { background: var(--orange); }

.page-contact .channel-card__num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--track);
}

.page-contact .channel-card__title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: 1.35rem;
  line-height: 1.28;
  color: var(--space);
}

.page-contact .channel-card__desc {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--track);
}

.page-contact .channel-card__list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .channel-card__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--space);
}

.page-contact .channel-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .58em;
  width: 8px;
  height: 8px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--ice);
  border: 2px solid var(--sky);
}

.page-contact .channel-card--form .channel-card__list li::before {
  background: rgba(255, 106, 43, .18);
  border-color: var(--orange);
}

.page-contact .channel-card__foot {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--frost);
  font-size: 13px;
  line-height: 1.7;
  color: var(--track);
}

.page-contact .channel-card--form .channel-card__foot {
  color: var(--orange-deep);
  font-weight: 700;
}

@media (hover: hover) {
  .page-contact .channel-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--sh-3);
    border-color: rgba(24, 118, 224, .34);
  }

  .page-contact .channel-card--form:hover {
    border-color: rgba(255, 106, 43, .5);
  }

  .page-contact .copy-btn:hover {
    background: var(--sky);
    border-color: var(--sky);
    color: #fff;
  }
}

/* ---------- 合作提交 ---------- */
.page-contact .coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
  margin-top: 30px;
}

.page-contact .coop-sub {
  margin: 0 0 16px;
  padding-left: 12px;
  border-left: 3px solid var(--sky);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .1em;
  line-height: 1.5;
  color: var(--space);
}

.page-contact .coop-sub + .field-list + .coop-sub {
  margin-top: 34px;
}

.page-contact .field-list {
  margin: 0;
  padding: 0;
}

.page-contact .field {
  padding: 14px 0 13px;
  border-bottom: 1px solid var(--frost);
  transition: border-color .2s var(--ease);
}

.page-contact .field dt {
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .05em;
  color: var(--space);
}

.page-contact .field dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--track);
}

@media (hover: hover) {
  .page-contact .field:hover { border-color: var(--orange); }
}

.page-contact .coop-media {
  margin: 0 0 26px;
  border-radius: var(--pc-radius);
  overflow: hidden;
  box-shadow: var(--sh-2);
}

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

.page-contact .flow-steps li {
  counter-increment: pcstep;
  position: relative;
  padding: 0 0 26px 54px;
}

.page-contact .flow-steps li:last-child { padding-bottom: 0; }

.page-contact .flow-steps li::before {
  content: counter(pcstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--sky);
  color: #fff;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  box-shadow: 0 0 0 6px var(--paper);
  z-index: 1;
}

.page-contact .flow-steps li::after {
  content: "";
  position: absolute;
  left: 16px;
  top: 34px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--ice), rgba(214, 231, 250, 0));
}

.page-contact .flow-steps li:last-child::after { display: none; }

.page-contact .flow-step__title {
  margin: 5px 0 6px;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 800;
  color: var(--space);
}

.page-contact .flow-step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--track);
}

/* ---------- 回复时间 ---------- */
.page-contact .timing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 30px;
}

.page-contact .timing-card {
  padding: 24px 20px;
  border: 1px solid var(--frost);
  border-radius: var(--r-md);
  background: var(--paper);
  box-shadow: var(--sh-1);
}

.page-contact .timing-card--strong {
  border-color: transparent;
  background: linear-gradient(158deg, var(--sky) 0%, var(--sky-deep) 100%);
  box-shadow: var(--sh-2);
}

.page-contact .timing-card__big {
  margin: 0 0 6px;
  font-family: var(--font-num);
  font-size: clamp(1.75rem, 5vw, 2.3rem);
  font-weight: 800;
  letter-spacing: -.01em;
  font-variant-numeric: tabular-nums;
  color: #fff;
}

.page-contact .timing-card__label {
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .14em;
  color: var(--ice);
}

.page-contact .timing-card--strong p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(255, 255, 255, .88);
}

.page-contact .timing-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 800;
  color: var(--space);
}

.page-contact .timing-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--track);
}

/* ---------- 常见反馈 ---------- */
.page-contact .feedback-list {
  margin-top: 28px;
  border-top: 1px solid var(--frost);
}

.page-contact .feedback-item {
  border-bottom: 1px solid var(--frost);
}

.page-contact .feedback-item > summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 4px;
  cursor: pointer;
  list-style: none;
  color: var(--space);
  transition: color .2s var(--ease);
}

.page-contact .feedback-item > summary::-webkit-details-marker { display: none; }

.page-contact .feedback-item__num {
  flex: none;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  color: var(--sky);
  font-variant-numeric: tabular-nums;
}

.page-contact .feedback-item__name {
  flex: 1 1 auto;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 800;
  line-height: 1.4;
}

.page-contact .feedback-item__hint {
  flex: none;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--track);
}

.page-contact .feedback-item > summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-num);
  font-size: 18px;
  font-weight: 700;
  color: var(--orange);
}

.page-contact .feedback-item[open] > summary::after { content: "–"; }
.page-contact .feedback-item[open] > summary { color: var(--sky); }

.page-contact .feedback-item__body {
  padding: 0 4px 22px 32px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--track);
}

.page-contact .feedback-item__body p { margin: 0 0 12px; }

.page-contact .feedback-item__body ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 7px;
}

.page-contact .feedback-item__body li {
  position: relative;
  padding-left: 15px;
}

.page-contact .feedback-item__body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--orange);
}

/* ---------- 通信地址 ---------- */
.page-contact .reach {
  position: relative;
  overflow: hidden;
  background: var(--space);
  color: var(--cloud);
}

.page-contact .reach::before {
  content: "";
  position: absolute;
  right: -90px;
  top: -110px;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(24, 118, 224, .5), rgba(24, 118, 224, 0) 68%);
  pointer-events: none;
}

.page-contact .reach .container { position: relative; z-index: 1; }

.page-contact .reach .eyebrow { color: var(--gold); }
.page-contact .reach .eyebrow::before { background: var(--orange); }
.page-contact .reach .section-title { color: #fff; }

.page-contact .reach-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 28px;
}

.page-contact .reach-item {
  padding: 18px 18px 20px;
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .05);
}

.page-contact .reach-item__label {
  display: block;
  margin-bottom: 10px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .14em;
  color: var(--ice);
}

.page-contact .reach-item__value {
  display: block;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.65;
  color: #fff;
  word-break: break-word;
}

.page-contact .reach-item__value--num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
}

.page-contact .reach-item .copy-btn {
  margin-top: 14px;
  border-color: rgba(255, 255, 255, .3);
  background: rgba(255, 255, 255, .08);
  color: #fff;
}

@media (hover: hover) {
  .page-contact .reach-item .copy-btn:hover {
    background: var(--orange);
    border-color: var(--orange);
    color: #fff;
  }
}

.page-contact .reach-note {
  max-width: 62ch;
  margin: 22px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .7);
}

.page-contact .reach-icp {
  margin: 12px 0 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(255, 255, 255, .5);
}

.page-contact .reach-links {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .reach-links a {
  display: inline-block;
  font-size: 14px;
  line-height: 1.6;
  color: var(--cloud);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, .22);
  padding-bottom: 3px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

@media (hover: hover) {
  .page-contact .reach-links a:hover {
    color: var(--gold);
    border-color: var(--gold);
  }
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 700px) {
  .page-contact .contact-hero { padding-block: 34px 48px; }

  .page-contact .channel-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-contact .channel-card--form { grid-column: 1 / -1; }

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

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

  .page-contact .reach-links { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 28px; }
}

@media (min-width: 960px) {
  .page-contact .contact-hero { padding-block: 44px 60px; }

  .page-contact .channel-row {
    grid-template-columns: 1.02fr .92fr 1.16fr;
    gap: 22px;
    align-items: start;
  }

  .page-contact .channel-card--form { grid-column: auto; }
  .page-contact .channel-card--phone { margin-top: 36px; }
  .page-contact .channel-card--form { margin-top: 12px; }
  .page-contact .channel-card { padding: 32px 24px 26px; }

  .page-contact .coop-grid {
    grid-template-columns: 1.12fr .88fr;
    gap: 48px;
    align-items: start;
  }

  .page-contact .timing-grid { grid-template-columns: .92fr 1.04fr 1.04fr; }

  .page-contact .reach-grid { grid-template-columns: 1.15fr 1fr 1fr; }

  .page-contact .feedback-item__body { padding-left: 4px; }
  .page-contact .feedback-item > summary { padding-block: 22px; }
}

@media (min-width: 1200px) {
  .page-contact .channel-row { gap: 26px; }
  .page-contact .coop-grid { gap: 56px; }
}

/* ---------- 减少动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .copy-btn,
  .page-contact .field,
  .page-contact .feedback-item > summary,
  .page-contact .reach-links a {
    transition: none;
  }

  .page-contact .channel-card:hover { transform: none; }
}