/* ============ 联系与反馈 · 页面专属样式（作用域 .page-contact） ============ */

.page-contact {
  background: var(--c-void);
  color: var(--c-mist);
  overflow-x: hidden;
}

.page-contact .section {
  padding: clamp(46px, 7vw, 86px) 0;
  border-bottom: 1px solid var(--c-line);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 52px) 0 clamp(40px, 6vw, 68px);
  border-bottom: 1px solid var(--c-line);
}

.page-contact .contact-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-contact .contact-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 62%;
  opacity: 0.26;
}

.page-contact .contact-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(110% 80% at 82% 0%, rgba(124, 77, 255, 0.24) 0%, transparent 62%),
    linear-gradient(180deg, rgba(5, 7, 15, 0.55) 0%, rgba(5, 7, 15, 0.93) 64%, #05070F 100%);
}

.page-contact .contact-hero__slash {
  position: absolute;
  left: -6%;
  top: 54%;
  width: 62%;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(34, 224, 255, 0.72) 46%, transparent 100%);
  transform: rotate(-12deg);
  transform-origin: left center;
  z-index: 1;
  pointer-events: none;
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 2;
}

.page-contact .breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-fog);
  margin-bottom: 26px;
}

.page-contact .breadcrumb a {
  color: var(--c-fog);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--c-cyan);
}

.page-contact .breadcrumb__sep {
  margin: 0 8px;
  color: var(--c-violet-gray);
}

.page-contact .contact-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(29px, 5.2vw, 54px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.02em;
  margin: 18px 0 0;
  max-width: 20ch;
  color: var(--c-mist);
}

.page-contact .contact-hero__lead {
  margin-top: 22px;
  max-width: 38em;
  font-size: clamp(15px, 1.3vw, 16.5px);
  line-height: 1.9;
  color: rgba(232, 238, 247, 0.78);
}

.page-contact .contact-hero__meta {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-fog);
}

.page-contact .contact-hero__meta li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-contact .contact-hero__dot {
  width: 5px;
  height: 5px;
  background: var(--c-cyan);
  box-shadow: 0 0 8px rgba(34, 224, 255, 0.8);
}

.page-contact .contact-hero__actions {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 三渠道卡片 ---------- */
.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 34px;
}

.page-contact .channel {
  position: relative;
  padding: 26px 22px 28px;
  background: var(--c-panel);
  border: 1px solid var(--c-line);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--c-nebula), var(--c-cyan));
  transition: width var(--dur) var(--ease);
}

.page-contact .channel:hover,
.page-contact .channel:focus-within {
  border-color: var(--c-cyan);
  background: #0E1729;
}

.page-contact .channel:hover::before,
.page-contact .channel:focus-within::before {
  width: 100%;
}

.page-contact .channel__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  color: var(--c-nebula);
  border: 1px solid var(--c-line);
  margin-bottom: 18px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .channel:hover .channel__icon {
  color: var(--c-cyan);
  border-color: rgba(34, 224, 255, 0.55);
}

.page-contact .channel__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-fog);
  margin: 0;
}

.page-contact .channel__title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--c-mist);
  margin: 8px 0 0;
}

.page-contact .channel__value {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--c-lime);
  line-height: 1.55;
  margin: 16px 0 0;
  word-break: break-word;
}

.page-contact .channel__value--mail {
  font-size: clamp(14px, 1.55vw, 17px);
}

.page-contact .channel__value--phone {
  font-size: clamp(21px, 2.3vw, 27px);
  letter-spacing: 0.03em;
}

.page-contact .channel__value--addr {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  color: var(--c-mist);
  line-height: 1.75;
}

.page-contact .channel__desc {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-fog);
}

/* ---------- 渠道区底部说明 ---------- */
.page-contact .channel-foot {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: start;
  margin-top: 34px;
  padding-top: 30px;
  border-top: 1px solid var(--c-line);
}

.page-contact .channel-foot__title {
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 600;
  color: var(--c-mist);
  letter-spacing: 0.03em;
  margin: 0 0 12px;
}

.page-contact .channel-foot__body {
  margin: 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(232, 238, 247, 0.76);
}

.page-contact .channel-foot__meta {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
}

.page-contact .channel-foot__media {
  margin: 0;
}

.page-contact .channel-foot__media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 受理范围 ---------- */
.page-contact .rail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-contact .rail-time {
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--c-cyan);
  line-height: 1.2;
  margin: 12px 0 0;
}

.page-contact .rail-time__note {
  margin: 8px 0 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--c-fog);
}

.page-contact .scope-list {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  border-top: 1px solid var(--c-line);
}

.page-contact .scope-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  padding: 24px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .scope-item__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--c-nebula);
  padding-top: 4px;
}

.page-contact .scope-item__title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--c-mist);
  margin: 0;
}

.page-contact .scope-item__body p {
  margin: 10px 0 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(232, 238, 247, 0.74);
}

.page-contact .scope-note {
  margin: 26px 0 0;
  max-width: 38em;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--c-fog);
}

.page-contact .scope-note a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 255, 0.45);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .scope-note a:hover,
.page-contact .scope-note a:focus-visible {
  color: var(--c-lime);
  border-bottom-color: var(--c-lime);
}

/* ---------- 浅色反馈分区 ---------- */
.page-contact .feedback {
  padding: clamp(40px, 6vw, 76px) 0;
}

.page-contact .feedback-panel {
  padding: clamp(26px, 4.4vw, 56px);
}

.page-contact .eyebrow--dark {
  color: #4A3F7A;
}

.page-contact .feedback-title {
  font-family: var(--font-display);
  font-size: clamp(21px, 3vw, 31px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--c-ink);
  margin: 14px 0 0;
}

.page-contact .feedback-lead {
  margin: 14px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(10, 15, 26, 0.7);
}

.page-contact .feedback-body {
  margin-top: 32px;
}

.page-contact .fgroup {
  margin-top: 26px;
}

.page-contact .fgroup:first-child {
  margin-top: 0;
}

.page-contact .fgroup__label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--c-ink);
  margin-bottom: 8px;
}

.page-contact .fgroup__req {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--c-violet-gray);
  border: 1px solid rgba(74, 63, 122, 0.45);
  padding: 1px 6px;
  margin-left: 10px;
  vertical-align: 1px;
}

.page-contact .fgroup__note {
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(10, 15, 26, 0.56);
}

.page-contact .finput {
  display: block;
  width: 100%;
  box-sizing: border-box;
  background: transparent;
  border: 0;
  border-bottom: 1px solid rgba(10, 15, 26, 0.28);
  border-radius: 0;
  padding: 10px 2px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--c-ink);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .finput::placeholder {
  color: rgba(10, 15, 26, 0.36);
}

.page-contact .finput:focus {
  outline: none;
  border-bottom-color: var(--c-ink);
  background: rgba(198, 255, 61, 0.34);
}

.page-contact .finput--area {
  resize: vertical;
  min-height: 104px;
  line-height: 1.75;
}

.page-contact .choice-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
}

.page-contact .choice {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 10px;
  padding: 12px 0;
}

.page-contact .choice__input {
  grid-column: 1;
  grid-row: 1;
  appearance: none;
  -webkit-appearance: none;
  width: 15px;
  height: 15px;
  margin: 3px 0 0;
  border: 1px solid rgba(10, 15, 26, 0.45);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease);
}

.page-contact .choice__input:checked {
  border-color: var(--c-ink);
  background: radial-gradient(circle, var(--c-ink) 0 4px, transparent 4.5px);
}

.page-contact .choice__input:focus-visible {
  outline: 2px solid var(--c-violet-gray);
  outline-offset: 2px;
}

.page-contact .choice__label {
  grid-column: 2;
  grid-row: 1;
  font-size: 15px;
  line-height: 1.5;
  color: var(--c-ink);
  cursor: pointer;
}

.page-contact .choice__hint {
  display: none;
  grid-column: 2;
  grid-row: 2;
  margin: 4px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(10, 15, 26, 0.6);
  border-left: 2px solid var(--c-violet-gray);
  padding-left: 10px;
}

.page-contact .choice__input:checked ~ .choice__hint {
  display: block;
}

.page-contact .feedback-note {
  margin: 34px 0 0;
  padding-top: 22px;
  border-top: 1px solid rgba(10, 15, 26, 0.14);
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(10, 15, 26, 0.72);
}

.page-contact .feedback-note__mail {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--c-ink);
  word-break: break-all;
}

/* ---------- 合作洽谈 ---------- */
.page-contact .partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: 32px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-contact .partner-card {
  background: var(--c-void);
  padding: 26px 22px 30px;
  transition: background var(--dur) var(--ease);
}

.page-contact .partner-card:hover {
  background: var(--c-panel);
}

.page-contact .partner-card__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-nebula);
  margin: 0;
}

.page-contact .partner-card__title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--c-mist);
  margin: 14px 0 0;
}

.page-contact .partner-card__body {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-fog);
}

/* ---------- 到访与通信 ---------- */
.page-contact .visit-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-contact .visit-list {
  margin: 0;
  border-top: 1px solid var(--c-line);
}

.page-contact .visit-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .visit-item dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-cyan);
}

.page-contact .visit-item dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(232, 238, 247, 0.78);
}

/* ---------- 相关页面 ---------- */
.page-contact .resource {
  border-bottom: 0;
}

.page-contact .resource-title {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 23px);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--c-mist);
  margin: 0;
}

.page-contact .resource-links {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-contact .resource-links a {
  display: block;
  padding: 18px 20px;
  background: var(--c-panel);
  color: rgba(232, 238, 247, 0.86);
  font-size: 14.5px;
  line-height: 1.65;
  text-decoration: none;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .resource-links a:hover,
.page-contact .resource-links a:focus-visible {
  color: var(--c-cyan);
  background: #0E1729;
  outline: none;
}

.page-contact .resource-links a:focus-visible {
  box-shadow: inset 0 0 0 1px var(--c-cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .choice-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 0 22px;
  }

  .page-contact .visit-item {
    grid-template-columns: 140px 1fr;
    gap: 24px;
    align-items: baseline;
  }
}

@media (min-width: 860px) {
  .page-contact .channel-grid {
    grid-template-columns: 1.02fr 1.02fr 1.42fr;
    gap: 16px;
  }

  .page-contact .channel-foot {
    grid-template-columns: 1.55fr 1fr;
    gap: clamp(26px, 4vw, 56px);
    align-items: start;
  }

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

  .page-contact .resource-links {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .page-contact .rail-grid {
    grid-template-columns: minmax(180px, 3fr) 9fr;
    gap: clamp(30px, 4vw, 58px);
  }

  .page-contact .visit-layout {
    grid-template-columns: 5fr 7fr;
    gap: clamp(30px, 4vw, 60px);
    align-items: start;
  }

  .page-contact .contact-hero h1 {
    max-width: 18ch;
  }
}