/* ============ 反馈通道页 · page-contact ============ */
.page-contact {
  --pc-space: clamp(44px, 6.5vw, 92px);
  --pc-radius: 16px;
  --pc-radius-lg: 20px;
  display: block;
  overflow-x: hidden;
}

.page-contact .breadcrumb {
  padding-block: clamp(18px, 3vw, 30px) 0;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-block: clamp(22px, 3.6vw, 44px) clamp(30px, 4.6vw, 56px);
  border-bottom: 1px solid var(--border);
}

.page-contact .contact-hero h1 {
  margin: 14px 0 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 5.4vw, 58px);
  line-height: 1.08;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-contact .contact-hero .lede {
  margin: 22px 0 0;
  max-width: 64ch;
  font-size: clamp(15.5px, 1.6vw, 17.5px);
  line-height: 1.78;
  color: var(--text-soft);
}

.page-contact .contact-window {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 28px;
  padding: 9px 18px 9px 14px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-pill);
  background: var(--surface-2);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text-soft);
}

.page-contact .contact-window__dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-turf);
  box-shadow: 0 0 0 3px rgba(46, 125, 91, 0.16);
}

.page-contact .contact-window__label {
  font-weight: 600;
  color: var(--text);
}

.page-contact .contact-window__value {
  color: var(--key);
}

.page-contact .contact-window[data-state="due"] .contact-window__dot {
  background: var(--c-alert);
  box-shadow: 0 0 0 3px rgba(228, 103, 28, 0.2);
  animation: pc-pulse 2.4s ease-in-out infinite;
}

@keyframes pc-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ---------- 章节头 ---------- */
.page-contact .pc-head {
  max-width: 780px;
}

.page-contact .pc-head h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.2vw, 40px);
  line-height: 1.16;
  letter-spacing: 0.015em;
  color: var(--text);
}

.page-contact .pc-head .lede {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.75;
  color: var(--text-soft);
}

/* ---------- 邮件与电话 ---------- */
.page-contact .contact-channel {
  padding-block: var(--pc-space) 0;
}

.page-contact .contact-channel__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(24px, 3.6vw, 40px);
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--pc-radius-lg);
  overflow: hidden;
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  padding: clamp(22px, 3vw, 38px);
  background: var(--surface);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
}

.page-contact .channel-card--mail::before {
  background: var(--c-earth);
}

.page-contact .channel-card--phone::before {
  background: var(--c-turf);
}

.page-contact .channel-card__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(15px, 4.2vw, 25px);
  line-height: 1.3;
  letter-spacing: -0.005em;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-contact .channel-card--phone .channel-card__value {
  font-size: clamp(30px, 6.6vw, 50px);
  letter-spacing: 0.01em;
}

.page-contact .channel-card__note {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text-soft);
}

/* ---------- 图片 ---------- */
.page-contact .contact-media {
  margin: clamp(30px, 4.6vw, 56px) 0 0;
}

.page-contact .contact-flow__media {
  margin: clamp(26px, 3.6vw, 40px) 0 0;
}

/* ---------- 四类提交内容 ---------- */
.page-contact .contact-submit {
  padding-block: var(--pc-space) 0;
}

.page-contact .submit-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: clamp(24px, 3.6vw, 40px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .submit-item {
  display: block;
  border: 1px solid var(--border);
  border-radius: var(--pc-radius);
  background: var(--surface);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease);
}

.page-contact .submit-item[open] {
  border-color: var(--c-turf);
}

.page-contact .submit-item__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  padding: clamp(16px, 2.4vw, 22px) clamp(16px, 2.6vw, 28px);
  cursor: pointer;
  list-style: none;
}

.page-contact .submit-item__summary::-webkit-details-marker {
  display: none;
}

.page-contact .submit-item__summary::marker {
  content: "";
}

.page-contact .submit-item__index {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-earth);
}

.page-contact .submit-item__name {
  flex: 1 1 auto;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 2vw, 21px);
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-contact .submit-item__hint {
  flex: 1 0 100%;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.page-contact .submit-item__body {
  padding: 18px clamp(16px, 2.6vw, 28px) clamp(20px, 2.8vw, 28px);
  border-top: 1px dashed var(--border);
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--text-soft);
}

.page-contact .submit-item__body p {
  margin: 0;
}

.page-contact .submit-item__body a {
  color: var(--key);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .submit-item__need {
  display: grid;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .submit-item__need li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--text-soft);
}

.page-contact .submit-item__need li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--c-turf);
}

/* ---------- 邮寄地址 ---------- */
.page-contact .contact-post {
  padding-block: var(--pc-space) 0;
}

.page-contact .post-plate {
  padding: clamp(24px, 4vw, 48px);
  border: 1px dashed var(--border-strong);
  border-radius: var(--pc-radius-lg);
  background: var(--bg-band);
}

.page-contact .post-plate__kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-contact .post-plate h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3vw, 36px);
  line-height: 1.18;
  letter-spacing: 0.015em;
  color: var(--text);
}

.page-contact .post-plate__addr {
  margin: 22px 0 0;
  padding-left: 16px;
  max-width: 26ch;
  border-left: 3px solid var(--c-earth);
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.2vw, 23px);
  line-height: 1.6;
  color: var(--text);
}

.page-contact .post-plate__note {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-contact .post-plate__legal {
  margin: 24px 0 0;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

/* ---------- 赛前核定优先 ---------- */
.page-contact .contact-priority {
  padding-block: var(--pc-space) 0;
}

.page-contact .priority-plate {
  padding: clamp(22px, 3.4vw, 42px);
  border: 1px solid var(--border-strong);
  border-left: 4px solid var(--c-alert);
  border-radius: var(--pc-radius);
  background: var(--surface);
}

.page-contact .priority-plate__tag {
  display: inline-block;
  margin: 0;
  padding: 5px 13px;
  border-radius: var(--radius-pill);
  background: var(--c-alert);
  color: #FFFFFF;
  font-size: 12px;
  letter-spacing: 0.14em;
}

.page-contact .priority-plate h2 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 2.9vw, 34px);
  line-height: 1.2;
  letter-spacing: 0.015em;
  color: var(--text);
}

.page-contact .priority-plate p {
  margin: 16px 0 0;
  max-width: 66ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--text-soft);
}

.page-contact .priority-plate__sub {
  padding-left: 14px;
  border-left: 1px solid var(--border);
  font-size: 14.5px !important;
  color: var(--text-dim) !important;
}

/* ---------- 回复流程 ---------- */
.page-contact .contact-flow {
  padding-block: var(--pc-space) clamp(40px, 6vw, 84px);
}

.page-contact .flow-rail {
  margin-top: clamp(20px, 3vw, 34px);
}

.page-contact .flow-rail svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-contact .flow-rail__line {
  stroke: var(--border-strong);
  stroke-width: 1.4;
  stroke-dasharray: 5 8;
}

.page-contact .flow-rail__dot--1 { fill: var(--c-turf); }
.page-contact .flow-rail__dot--2 { fill: var(--c-earth); }
.page-contact .flow-rail__dot--3 { fill: var(--c-wall); }

.page-contact .flow-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--pc-radius);
  overflow: hidden;
}

.page-contact .flow-steps > li {
  padding: clamp(20px, 3vw, 32px);
  background: var(--surface);
}

.page-contact .flow-steps__index {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-earth);
}

.page-contact .flow-steps__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(16.5px, 1.9vw, 19px);
  line-height: 1.3;
  color: var(--text);
}

.page-contact .flow-steps__text {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-soft);
}

.page-contact .flow-steps__text a {
  color: var(--key);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .submit-item__hint {
    flex: 0 0 auto;
    text-align: right;
  }
}

@media (min-width: 780px) {
  .page-contact .contact-channel__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 880px) {
  .page-contact .flow-steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .contact-hero {
    padding-block: clamp(30px, 4vw, 52px) clamp(38px, 5vw, 64px);
  }
}

@media (max-width: 520px) {
  .page-contact .contact-window {
    width: 100%;
    justify-content: flex-start;
  }

  .page-contact .post-plate__addr {
    max-width: none;
  }
}