/* ============================================================
   开云中文官网 · Contact 页面专属样式
   作用域：.page-contact
   ============================================================ */
.page-contact {
  --contact-carbon: #071020;
  --contact-panel-bg: linear-gradient(155deg, #0D1B2A 0%, #0A1428 78%);
  --contact-neon-line: linear-gradient(90deg, #39FF14 0%, rgba(57,255,20,.3) 55%, rgba(57,255,20,0) 100%);
  --contact-orange-line: linear-gradient(90deg, #FF6A00 0%, rgba(255,106,0,.2) 60%, rgba(255,106,0,0) 100%);
  --contact-glow-green: 0 0 20px rgba(57,255,20,.16);
  --contact-glow-orange: 0 0 20px rgba(255,106,0,.13);
  position: relative;
  background:
    radial-gradient(1000px 460px at 90% -4%, rgba(27,42,74,.62), transparent 62%),
    radial-gradient(760px 420px at -8% 24%, rgba(27,42,74,.34), transparent 60%),
    var(--c-bg);
  color: var(--c-text);
  overflow-x: hidden;
}

/* ---- 面包屑 ---- */
.page-contact .contact-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(24px, 4vw, 44px);
  font-family: var(--f-mono);
  font-size: .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--c-muted);
}

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

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

.page-contact .crumb-sep {
  opacity: .5;
}

/* ---- 按钮局部调优 ---- */
.page-contact .btn {
  justify-content: center;
  text-align: center;
}

.page-contact .btn-primary {
  border: 1px solid rgba(57,255,20,.5);
  background: rgba(57,255,20,.12);
  color: var(--c-neon);
  box-shadow: var(--contact-glow-green);
}

.page-contact .btn-primary:hover {
  background: rgba(57,255,20,.2);
}

.page-contact .btn-ghost {
  border: 1px solid var(--c-border);
  background: rgba(10,20,40,.4);
  color: var(--c-text);
}

.page-contact .btn-ghost:hover {
  border-color: rgba(57,255,20,.4);
  color: var(--c-neon);
}

/* ---- Hero ---- */
.page-contact .contact-hero {
  padding: clamp(48px, 6vw, 88px) 0 clamp(48px, 7vw, 84px);
}

.page-contact .contact-hero-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

@media (min-width: 660px) {
  .page-contact .contact-hero-layout {
    grid-template-columns: 1.4fr .8fr;
    align-items: end;
    gap: 36px;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero-layout {
    grid-template-columns: 1.55fr .7fr;
    gap: clamp(48px, 6vw, 88px);
  }
}

.page-contact .contact-hero-copy .index-label {
  margin-bottom: 16px;
}

.page-contact .contact-hero-copy h1 {
  margin: 0 0 18px;
  font-family: var(--f-head);
  font-size: clamp(1.9rem, 5.6vw, 3.6rem);
  line-height: 1.12;
  letter-spacing: .01em;
  text-wrap: balance;
}

.page-contact .contact-hero-desc {
  max-width: 64ch;
  margin: 0 0 26px;
  color: var(--c-muted);
  font-size: clamp(.95rem, 1.4vw, 1.06rem);
  line-height: 1.8;
}

.page-contact .contact-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .status-card {
  position: relative;
  padding: clamp(20px, 2.4vw, 26px);
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-top: 2px solid var(--c-orange);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(8px);
}

.page-contact .status-card-line {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.page-contact .status-card-time {
  margin-left: auto;
  color: var(--c-neon);
  font-family: var(--f-mono);
  font-size: 1.05rem;
}

.page-contact .status-card-title {
  margin: 0 0 8px;
  font-size: 1rem;
  line-height: 1.55;
  font-weight: 600;
}

.page-contact .status-card > .muted-text {
  margin-bottom: 20px;
  font-size: .85rem;
}

/* ---- 联系方法区 ---- */
.page-contact .contact-methods {
  padding: clamp(56px, 8vw, 104px) 0;
}

.page-contact .contact-methods-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 56px);
}

@media (min-width: 880px) {
  .page-contact .contact-methods-layout {
    grid-template-columns: minmax(0, 1.7fr) minmax(280px, .85fr);
    gap: clamp(32px, 5vw, 72px);
  }
}

.page-contact .section-head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-contact .section-head .index-label {
  display: block;
  margin-bottom: 10px;
}

.page-contact .section-title {
  margin: 0 0 10px;
  font-family: var(--f-head);
  font-size: clamp(1.45rem, 2.8vw, 2.1rem);
  line-height: 1.24;
  color: var(--c-text);
}

.page-contact .section-sub {
  margin: 0;
  max-width: 62ch;
  color: var(--c-muted);
  font-size: .9rem;
  line-height: 1.7;
}

/* 联系方式卡片 */
.page-contact .contact-panel {
  position: relative;
  padding: clamp(16px, 2.4vw, 28px);
  background: var(--contact-panel-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.page-contact .contact-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--contact-neon-line);
}

.page-contact .contact-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 700px) {
  .page-contact .contact-list {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
}

.page-contact .contact-item {
  position: relative;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 12px;
  align-items: start;
  min-width: 0;
  padding: 16px 14px;
  background: rgba(10,20,40,.55);
  border: 1px solid var(--c-border-steel);
  border-radius: var(--radius);
  transition: border-color .2s ease, transform .2s var(--tick);
}

@media (min-width: 700px) {
  .page-contact .contact-item {
    grid-template-columns: 52px 1fr;
    padding: 18px 16px;
  }
}

.page-contact .contact-item:hover {
  border-color: var(--c-border);
  transform: translateY(-2px);
}

.page-contact .contact-item-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-top: 2px;
  border: 1px solid var(--c-border-steel);
  border-radius: 3px;
  background: rgba(18,30,51,.45);
}

@media (min-width: 700px) {
  .page-contact .contact-item-icon {
    width: 52px;
    height: 52px;
  }
}

.page-contact .contact-item-icon svg {
  width: 28px;
  height: 28px;
  display: block;
}

.page-contact .contact-item-body {
  min-width: 0;
}

.page-contact .contact-item-label {
  margin: 0 0 5px;
  font-family: var(--f-mono);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.page-contact .contact-item-value {
  display: block;
  font-size: .98rem;
  line-height: 1.5;
  color: var(--c-text);
  text-decoration: none;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-contact a.contact-item-value:hover {
  color: var(--c-neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .contact-item-scope {
  margin: 8px 0 0;
  font-size: .77rem;
  line-height: 1.55;
  color: var(--c-muted);
}

.page-contact .contact-item-direction {
  position: absolute;
  top: 14px;
  right: 12px;
  font-size: .8rem;
  color: var(--c-muted);
  opacity: .65;
  transition: transform .2s var(--tick), color .2s ease;
}

.page-contact .contact-item:hover .contact-item-direction {
  transform: translate(2px, -2px);
  color: var(--c-neon);
}

/* FAQ 侧边栏 */
.page-contact .contact-side-col {
  height: fit-content;
  padding: clamp(20px, 2.5vw, 28px);
  background: linear-gradient(180deg, rgba(18,30,51,.72), rgba(10,20,40,.5));
  border: 1px solid var(--c-border);
  border-top: 2px solid var(--c-orange);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.page-contact .contact-side-intro {
  margin: 14px 0 16px;
  font-size: .88rem;
  line-height: 1.65;
}

.page-contact .faq-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .faq-list li {
  border-bottom: 1px solid rgba(42,59,92,.38);
}

.page-contact .faq-list li:last-child {
  border-bottom: 0;
}

.page-contact .faq-list a {
  display: grid;
  grid-template-columns: 30px 1fr 20px;
  gap: 8px;
  align-items: center;
  padding: 12px 4px;
  color: var(--c-text);
  text-decoration: none;
  font-size: .9rem;
  line-height: 1.4;
  transition: padding-left .2s var(--tick), background .2s ease;
}

.page-contact .faq-list a:hover {
  padding-left: 12px;
  background: rgba(57,255,20,.05);
}

.page-contact .faq-index {
  font-size: .76rem;
  color: var(--c-neon);
}

.page-contact .faq-arrow {
  text-align: right;
  color: var(--c-muted);
  font-size: .85rem;
  transition: transform .2s var(--tick), color .2s ease;
}

.page-contact .faq-list a:hover .faq-arrow {
  color: var(--c-neon);
  transform: translateX(3px);
}

.page-contact .contact-side-btn {
  margin-top: 18px;
  width: 100%;
}

/* ---- SLA 响应区 ---- */
.page-contact .contact-response {
  padding: clamp(40px, 6vw, 72px) 0;
}

.page-contact .response-panel {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding: clamp(24px, 4vw, 44px);
  background: linear-gradient(135deg, #0D1B2A 0%, rgba(7,16,32,.92) 72%);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.page-contact .response-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--contact-orange-line);
}

@media (min-width: 860px) {
  .page-contact .response-panel {
    grid-template-columns: minmax(0, 1.4fr) minmax(200px, .7fr);
    align-items: center;
    gap: clamp(28px, 4vw, 56px);
  }
}

.page-contact .response-main .index-label {
  display: block;
  margin-bottom: 12px;
}

.page-contact .response-main .section-title {
  margin-bottom: 14px;
}

.page-contact .response-desc {
  margin: 0 0 24px;
  max-width: 58ch;
  color: var(--c-muted);
  font-size: .92rem;
  line-height: 1.75;
}

.page-contact .response-metrics {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

@media (max-width: 380px) {
  .page-contact .response-metrics {
    gap: 6px;
  }
}

.page-contact .response-metric {
  padding: 14px 10px;
  border-left: 2px solid var(--c-neon);
  background: rgba(57,255,20,.045);
}

.page-contact .response-metric dt {
  font-family: var(--f-mono);
  font-size: clamp(1.35rem, 2.8vw, 1.9rem);
  line-height: 1;
  color: var(--c-neon);
  font-weight: 700;
  animation: contact-metric-glow 3.6s ease-in-out infinite;
}

.page-contact .response-metric:nth-child(2) dt {
  animation-delay: .8s;
}

.page-contact .response-metric:nth-child(3) dt {
  animation-delay: 1.6s;
}

.page-contact .response-metric dd {
  margin: 8px 0 0;
  font-size: .72rem;
  line-height: 1.45;
  color: var(--c-muted);
}

@keyframes contact-metric-glow {
  0%, 100% {
    color: var(--c-neon);
    text-shadow: 0 0 0 rgba(57,255,20,0);
  }
  50% {
    color: #d9ffc8;
    text-shadow: 0 0 18px rgba(57,255,20,.42);
  }
}

.page-contact .response-aside {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
}

.page-contact .response-chart {
  position: relative;
  width: min(200px, 100%);
}

.page-contact .response-chart img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}

.page-contact .response-chart-label {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 4px 8px;
  font-family: var(--f-mono);
  font-size: .62rem;
  letter-spacing: .12em;
  color: var(--c-neon);
  background: rgba(7,16,32,.82);
  border: 1px solid rgba(57,255,20,.35);
}

/* ---- 商务合作与反馈 ---- */
.page-contact .contact-biz {
  padding: clamp(48px, 7vw, 88px) 0;
}

.page-contact .section-head--center {
  max-width: 64ch;
  margin: 0 auto clamp(28px, 4vw, 44px);
  text-align: center;
}

.page-contact .section-head--center .section-sub {
  margin: 0 auto;
}

.page-contact .feedback-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 28px;
}

@media (min-width: 780px) {
  .page-contact .feedback-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }
}

.page-contact .feedback-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  height: 100%;
  padding: 24px 20px 20px;
  background: var(--c-bg-card);
  border: 1px solid var(--c-border-steel);
  border-radius: var(--radius);
  transition: transform .25s var(--tick), border-color .25s ease;
}

.page-contact .feedback-card:hover {
  transform: translateY(-4px);
  border-color: var(--c-border);
}

.page-contact .feedback-card-index {
  position: absolute;
  top: 16px;
  right: 16px;
  font-family: var(--f-mono);
  font-size: .76rem;
  color: var(--c-muted);
}

.page-contact .feedback-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--c-border-steel);
  border-radius: 4px;
  background: rgba(13,27,42,.6);
}

.page-contact .feedback-card-icon svg {
  display: block;
  width: 26px;
  height: 26px;
}

.page-contact .feedback-card h3 {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.4;
}

.page-contact .feedback-card > p {
  flex: 1;
  margin: 0;
  color: var(--c-muted);
  font-size: .88rem;
  line-height: 1.7;
}

.page-contact .feedback-card .btn {
  margin-top: 4px;
  width: 100%;
}

/* 数据链路横幅 */
.page-contact .channel-banner {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.page-contact .channel-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  object-position: center 30%;
}

.page-contact .channel-banner-overlay {
  position: absolute;
  inset: auto 0 0 0;
  padding: clamp(18px, 3.5vw, 34px);
  background: linear-gradient(180deg, rgba(7,16,32,0) 0%, rgba(7,16,32,.86) 68%);
}

.page-contact .channel-banner-overlay .index-label {
  display: block;
  margin-bottom: 10px;
}

.page-contact .channel-banner-overlay h3 {
  margin: 0 0 10px;
  font-family: var(--f-head);
  font-size: clamp(1.1rem, 2.4vw, 1.4rem);
  line-height: 1.3;
}

.page-contact .channel-banner-overlay p:last-child {
  margin: 0;
  max-width: 60ch;
  color: var(--c-muted);
  font-size: .86rem;
  line-height: 1.65;
}

/* ---- 附加链接 ---- */
.page-contact .contact-extra {
  padding: clamp(24px, 3vw, 48px) 0 clamp(64px, 8vw, 110px);
}

.page-contact .extra-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 760px) {
  .page-contact .extra-grid {
    grid-template-columns: 1fr 1fr;
    gap: 22px;
  }
}

.page-contact .extra-card {
  display: block;
  padding: clamp(22px, 3vw, 32px);
  background: rgba(18,30,51,.42);
  border: 1px solid var(--c-border-steel);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--c-text);
  transition: border-color .25s ease, transform .25s var(--tick);
}

.page-contact .extra-card:hover {
  border-color: var(--c-border);
  transform: translateY(-2px);
}

.page-contact .extra-card .index-label {
  display: block;
  margin-bottom: 10px;
}

.page-contact .extra-card h3 {
  margin: 0 0 10px;
  font-size: 1.15rem;
  line-height: 1.4;
}

.page-contact .extra-card p {
  margin: 0 0 18px;
  color: var(--c-muted);
  font-size: .9rem;
  line-height: 1.7;
}