.page-contact {
  --contact-gap: clamp(16px, 3vw, 32px);
  --contact-sticky: 92px;
  --contact-ink-soft: #5E7690;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-top: clamp(20px, 4vw, 40px);
  padding-bottom: clamp(20px, 3vw, 32px);
}

.page-contact .contact-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(30px, 6vw, 56px);
  line-height: 1.14;
  letter-spacing: -0.03em;
  font-weight: 900;
  color: var(--paper);
  max-width: 17em;
}

.page-contact .contact-lede {
  margin: 18px 0 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .hero-facts {
  list-style: none;
  margin: 28px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--grid);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px 20px;
}

.page-contact .hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}

.page-contact .hero-facts .num {
  font-family: var(--font-mono);
  font-size: clamp(17px, 3.4vw, 21px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-contact .hero-facts span:last-child {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .contact-band {
  margin-top: clamp(22px, 4vw, 38px);
}

.page-contact .contact-band .media {
  margin: 0;
}

/* ---------- 双栏 ---------- */
.page-contact .contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--contact-gap);
}

.page-contact .aside-title {
  margin: 0;
  padding-left: 12px;
  position: relative;
  font-size: clamp(19px, 2.6vw, 24px);
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .aside-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 6px;
  background: var(--cyan);
  border-radius: 1px;
}

.page-contact .aside-note {
  margin: 10px 0 16px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .channel-card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--grid);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
  padding: 16px 18px 18px;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.page-contact .channel-card + .channel-card {
  margin-top: 14px;
}

.page-contact .channel-cat {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--label);
  background: rgba(232, 226, 212, 0.09);
  border: 1px solid rgba(232, 226, 212, 0.26);
  border-radius: 2px;
  padding: 3px 8px;
}

.page-contact .channel-label {
  margin: 12px 0 6px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-contact .channel-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(14px, 3.3vw, 16px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-contact .channel-fit {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--grid);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .channel-media {
  margin: 14px 0 0;
}

.page-contact .channel-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 2px;
}

.page-contact .aside-foot {
  margin: 16px 0 0;
  padding: 12px 14px;
  background: rgba(58, 74, 94, 0.35);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 反馈登记卡 ---------- */
.page-contact .feedback-card {
  position: relative;
  background: linear-gradient(180deg, rgba(18, 35, 58, 0.96) 0%, rgba(10, 21, 36, 0.98) 100%);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  padding: clamp(18px, 3vw, 30px);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.page-contact .feedback-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 30px;
  height: 30px;
  background: linear-gradient(225deg, var(--orange) 0 48%, transparent 50%);
  opacity: 0.9;
  pointer-events: none;
}

.page-contact .feedback-card::after {
  content: "";
  position: absolute;
  top: -70px;
  left: -70px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(47, 227, 208, 0.14) 0%, transparent 70%);
  pointer-events: none;
}

.page-contact .feedback-head {
  position: relative;
  z-index: 1;
}

.page-contact .feedback-head h2 {
  margin: 14px 0 0;
  font-size: clamp(20px, 3.4vw, 27px);
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-contact .feedback-head p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .field-set {
  position: relative;
  z-index: 1;
}

.page-contact .field {
  margin-top: 22px;
}

.page-contact .field-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.page-contact .field-num {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--cyan);
  border: 1px solid rgba(47, 227, 208, 0.42);
  border-radius: 2px;
  padding: 2px 6px;
  line-height: 1;
}

.page-contact .field-input,
.page-contact .field-textarea {
  display: block;
  width: 100%;
  margin-top: 9px;
  box-sizing: border-box;
  background: rgba(10, 21, 36, 0.72);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  padding: 11px 13px;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s var(--ease);
}

.page-contact .field-textarea {
  resize: vertical;
  min-height: 98px;
}

.page-contact .field-input::placeholder,
.page-contact .field-textarea::placeholder {
  color: var(--contact-ink-soft);
}

.page-contact .field-input:focus,
.page-contact .field-textarea:focus {
  outline: none;
  border-color: var(--cyan);
  background: rgba(10, 21, 36, 0.95);
  box-shadow: 0 0 0 3px rgba(47, 227, 208, 0.14);
}

.page-contact .field-hint {
  margin: 7px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .chip-group {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 11px;
}

.page-contact .chip-input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  padding: 0;
  opacity: 0;
  pointer-events: none;
}

.page-contact .chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--mist);
  background: rgba(10, 21, 36, 0.6);
  border: 1px solid var(--grid);
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-contact .chip::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: 1px solid currentColor;
  flex: none;
}

.page-contact .chip:hover {
  border-color: var(--cyan);
  color: var(--paper);
}

.page-contact .chip-input:checked + .chip {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 600;
}

.page-contact .chip-input:checked + .chip::before {
  border-color: var(--ink);
  background: var(--ink);
}

.page-contact .chip-input:focus-visible + .chip {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-contact .feedback-foot {
  position: relative;
  z-index: 1;
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--grid);
}

.page-contact .feedback-note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--mist);
}

.page-contact .feedback-note .num {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  color: var(--cyan);
  overflow-wrap: anywhere;
}

/* ---------- 反馈分类 ---------- */
.page-contact .type-grid {
  gap: 16px;
}

.page-contact .type-card {
  background: var(--panel);
  border: 1px solid var(--grid);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
  padding: 18px;
  min-width: 0;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-contact .type-card:hover {
  transform: translateY(-4px);
}

.page-contact .type-card:nth-child(2) {
  border-left-color: var(--green);
}

.page-contact .type-card:nth-child(3) {
  border-left-color: var(--amber);
}

.page-contact .type-card:nth-child(4) {
  border-left-color: var(--orange);
}

.page-contact .type-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.page-contact .type-index {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: rgba(47, 227, 208, 0.3);
}

.page-contact .type-name {
  margin: 14px 0 8px;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .type-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 提交前核对 ---------- */
.page-contact .check-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.page-contact .check-copy p {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: chk;
}

.page-contact .check-item {
  position: relative;
  padding: 14px 16px 14px 56px;
  background: rgba(18, 35, 58, 0.7);
  border: 1px solid var(--grid);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .check-item::before {
  counter-increment: chk;
  content: counter(chk, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--amber);
}

.page-contact .check-item strong {
  color: var(--paper);
  font-weight: 600;
}

/* ---------- 单位与团队 ---------- */
.page-contact .audience-grid {
  gap: 16px;
}

.page-contact .audience-card {
  background: rgba(18, 35, 58, 0.6);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  padding: 18px;
  min-width: 0;
}

.page-contact .audience-card h3 {
  margin: 14px 0 8px;
  font-size: 16px;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .audience-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .contact-route-note {
  margin: 26px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--grid);
  font-size: 14px;
  line-height: 1.9;
  color: var(--mist);
}

.page-contact .inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 208, 0.42);
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-contact .inline-link:hover {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .check-item {
    padding-right: 22px;
  }
}

@media (min-width: 900px) {
  .page-contact .check-layout {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    gap: clamp(24px, 4vw, 56px);
    align-items: start;
  }

  .page-contact .check-copy {
    position: sticky;
    top: var(--contact-sticky);
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-layout {
    grid-template-columns: minmax(290px, 360px) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .contact-aside {
    position: sticky;
    top: var(--contact-sticky);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .type-card:hover {
    transform: none;
  }
}