.page-contact {
  --ct-panel: rgba(11, 16, 36, .82);
  --ct-panel-soft: rgba(19, 26, 58, .68);
  --ct-wire: rgba(47, 227, 214, .34);
  --ct-glow-violet: rgba(108, 75, 246, .26);
  --ct-glow-cyan: rgba(47, 227, 214, .15);
  --ct-grid: rgba(168, 176, 200, .07);

  position: relative;
  background: var(--deep-space);
  color: var(--mist-white);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(40px, 6vw, 80px) 0 clamp(36px, 5vw, 64px);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: -18% -12% auto -12%;
  height: min(640px, 92%);
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(46% 58% at 24% 32%, var(--ct-glow-violet), transparent 72%),
    radial-gradient(40% 52% at 78% 18%, var(--ct-glow-cyan), transparent 70%);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--ct-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--ct-grid) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(72% 62% at 50% 26%, #000 0%, transparent 78%);
  mask-image: radial-gradient(72% 62% at 50% 26%, #000 0%, transparent 78%);
}

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

.page-contact .contact-hero__title {
  margin: 16px 0 0;
  max-width: 16ch;
  font-size: var(--fs-display);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -.03em;
  color: var(--mist-white);
}

.page-contact .contact-hero__lead {
  margin: clamp(20px, 3vw, 32px) 0 0;
  max-width: 62ch;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--alloy-grey);
}

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

.page-contact .hero-marks li {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  padding: 0 18px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: var(--ct-panel-soft);
  font-size: var(--fs-14);
  color: var(--mist-white);
}

.page-contact .hero-marks li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ion-cyan);
  box-shadow: 0 0 10px rgba(47, 227, 214, .9);
}

.page-contact .contact-hero .vert-mark {
  display: none;
  position: absolute;
  right: 0;
  top: 44%;
  transform: rotate(90deg);
  transform-origin: right center;
  font-family: var(--font-en);
  font-size: var(--fs-12);
  letter-spacing: .3em;
  text-transform: uppercase;
  color: rgba(168, 176, 200, .5);
  white-space: nowrap;
  pointer-events: none;
}

/* ---------- 渠道星图 ---------- */
.page-contact .channel-map {
  position: relative;
  margin-top: clamp(32px, 5vw, 56px);
  display: grid;
  gap: 18px;
}

.page-contact .channel-map__wire {
  display: none;
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: .9;
}

.page-contact .channel-node {
  position: relative;
  z-index: 1;
  padding: clamp(22px, 2.6vw, 30px);
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: linear-gradient(165deg, rgba(19, 26, 58, .94), rgba(11, 16, 36, .94));
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-contact .channel-node:hover {
  transform: translateY(-6px);
  border-color: rgba(47, 227, 214, .52);
  box-shadow: 0 26px 52px -30px rgba(47, 227, 214, .6);
}

.page-contact .channel-node__index {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  line-height: 1;
  letter-spacing: .04em;
  color: var(--ion-cyan);
}

.page-contact .channel-node__title {
  margin: 14px 0 10px;
  font-size: var(--fs-20);
  font-weight: 700;
  color: var(--mist-white);
}

.page-contact .channel-node__value {
  margin: 0 0 14px;
  font-family: var(--font-en);
  font-size: var(--fs-16);
  letter-spacing: .01em;
  color: var(--mist-white);
  word-break: break-word;
}

.page-contact .channel-node--addr .channel-node__value {
  font-family: var(--font-zh);
  line-height: 1.72;
  font-weight: 600;
}

.page-contact .channel-node__note {
  margin: 14px 0 0;
  font-size: var(--fs-14);
  line-height: 1.78;
  color: var(--alloy-grey);
}

.page-contact .channel-node__action {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-contact .copy-mail {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(47, 227, 214, .5);
  background: rgba(47, 227, 214, .09);
  color: var(--ion-cyan);
  font-family: var(--font-zh);
  font-size: var(--fs-14);
  letter-spacing: .02em;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .copy-mail:hover,
.page-contact .copy-mail:focus-visible {
  background: var(--ion-cyan);
  border-color: var(--ion-cyan);
  color: var(--deep-space);
}

.page-contact .copy-mail__hint {
  display: inline-block;
  min-height: 1.2em;
  font-size: var(--fs-12);
  color: var(--aurora-green);
}

/* ---------- 图组 ---------- */
.page-contact .contact-figure {
  margin: clamp(36px, 5vw, 64px) 0 0;
}

.page-contact .contact-wire-section {
  padding-top: clamp(32px, 4.5vw, 56px);
}

.page-contact .contact-wire {
  margin: 0;
}

.page-contact .img-frame {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(19, 26, 58, .9), rgba(5, 6, 14, .9));
}

.page-contact .img-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .img-frame__caption {
  display: block;
  padding: 14px 20px 18px;
  font-size: var(--fs-12);
  letter-spacing: .04em;
  color: var(--alloy-grey);
  border-top: 1px solid var(--line);
}

/* ---------- 受理事项 ---------- */
.page-contact .tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(24px, 3vw, 36px);
}

.page-contact .tabs__btn {
  min-height: 44px;
  padding: 0 20px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--alloy-grey);
  font-family: var(--font-zh);
  font-size: var(--fs-14);
  letter-spacing: .04em;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .tabs__btn:hover {
  border-color: var(--ion-cyan);
  color: var(--mist-white);
}

.page-contact .tabs__btn[aria-selected="true"] {
  background: var(--ion-cyan);
  border-color: var(--ion-cyan);
  color: var(--deep-space);
  font-weight: 700;
}

.page-contact .matter-panels {
  margin-top: clamp(20px, 3vw, 32px);
  display: grid;
  gap: 18px;
}

.page-contact .matter-panel {
  padding: clamp(22px, 3vw, 38px);
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  border-top: 2px solid rgba(108, 75, 246, .65);
  background: linear-gradient(180deg, rgba(19, 26, 58, .6), rgba(11, 16, 36, .6));
}

.page-contact .matter-panel__grid {
  display: grid;
  gap: 26px;
}

.page-contact .matter-panel__label {
  margin: 0;
  font-family: var(--font-en);
  font-size: var(--fs-12);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--solar-gold);
}

.page-contact .matter-panel ul {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .matter-panel li {
  position: relative;
  padding-left: 20px;
  font-size: var(--fs-14);
  line-height: 1.78;
  color: var(--alloy-grey);
}

.page-contact .matter-panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .64em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ion-cyan);
  opacity: .78;
}

.page-contact .matter-panel li strong {
  color: var(--mist-white);
  font-weight: 600;
}

.page-contact .matter-panel__foot {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: var(--fs-14);
  line-height: 1.78;
  color: var(--alloy-grey);
}

.page-contact .matter-panel__foot a {
  color: var(--ion-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 214, .45);
}

/* ---------- 处理流程 ---------- */
.page-contact .step-list {
  list-style: none;
  margin: clamp(32px, 5vw, 56px) 0 0;
  padding: 0;
}

.page-contact .step {
  position: relative;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  padding-bottom: clamp(26px, 3.6vw, 42px);
}

.page-contact .step::after {
  content: "";
  position: absolute;
  left: 27px;
  top: 62px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(to bottom, rgba(47, 227, 214, .5), rgba(47, 227, 214, 0));
}

.page-contact .step:last-child {
  padding-bottom: 0;
}

.page-contact .step:last-child::after {
  display: none;
}

.page-contact .step__num {
  position: relative;
  z-index: 1;
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid rgba(47, 227, 214, .45);
  background: rgba(47, 227, 214, .08);
  font-family: var(--font-mono);
  font-size: var(--fs-20);
  color: var(--ion-cyan);
}

.page-contact .step__body h3 {
  margin: 8px 0 8px;
  font-size: var(--fs-20);
  font-weight: 700;
  color: var(--mist-white);
}

.page-contact .step__body p {
  margin: 0;
  max-width: 68ch;
  font-size: var(--fs-14);
  line-height: 1.82;
  color: var(--alloy-grey);
}

/* ---------- 答复节奏 + 备案 ---------- */
.page-contact .rhythm-band {
  margin-top: clamp(28px, 4vw, 44px);
  padding: clamp(24px, 4vw, 44px);
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: linear-gradient(118deg, rgba(19, 26, 58, .92), rgba(11, 16, 36, .92) 58%, rgba(108, 75, 246, .14));
  display: grid;
  gap: 26px;
}

.page-contact .rhythm-item {
  position: relative;
  padding-left: 20px;
}

.page-contact .rhythm-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 2px;
  border-radius: 2px;
  background: var(--ion-cyan);
}

.page-contact .rhythm-item h3 {
  margin: 0 0 8px;
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--mist-white);
}

.page-contact .rhythm-item p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--alloy-grey);
}

.page-contact .filing-strip {
  margin-top: clamp(28px, 4vw, 44px);
  padding: clamp(20px, 3vw, 30px);
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: ga(11, 16, 36, .7);
  background: rgba(11, 16, 36, .7);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 40px;
}

.page-contact .filing-strip__item {
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
}

.page-contact .filing-strip__key {
  font-family: var(--font-en);
  font-size: var(--fs-12);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--alloy-grey);
}

.page-contact .filing-strip__val {
  font-family: var(--font-mono);
  font-size: var(--fs-16);
  color: var(--solar-gold);
  letter-spacing: .02em;
}

.page-contact .filing-strip__note {
  margin: 0;
  font-size: var(--fs-14);
  color: var(--alloy-grey);
}

.page-contact .filing-strip__note a {
  color: var(--ion-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 214, .45);
}

/* ---------- 到访与邮寄 ---------- */
.page-contact .visit-list {
  margin-top: clamp(28px, 4vw, 48px);
  border-top: 1px solid var(--line-strong);
}

.page-contact .visit-row {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  padding: clamp(22px, 3vw, 30px) 0;
  border-bottom: 1px solid var(--line);
  transition: border-color var(--dur) var(--ease);
}

.page-contact .visit-row:hover {
  border-bottom-color: rgba(47, 227, 214, .42);
}

.page-contact .visit-row__index {
  font-family: var(--font-mono);
  font-size: var(--fs-20);
  color: var(--nebula-violet);
  line-height: 1.2;
}

.page-contact .visit-row__body h3 {
  margin: 0 0 8px;
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--mist-white);
}

.page-contact .visit-row__body p {
  margin: 0;
  max-width: 72ch;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--alloy-grey);
}

.page-contact .visit-accordion {
  margin-top: clamp(24px, 3.4vw, 36px);
}

.page-contact .visit-accordion .accordion__btn {
  width: 100%;
  min-height: 52px;
  padding: 0 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--line-strong);
  background: rgba(19, 26, 58, .55);
  color: var(--mist-white);
  font-family: var(--font-zh);
  font-size: var(--fs-16);
  text-align: left;
  cursor: pointer;
}

.page-contact .visit-accordion .accordion__panel {
  padding: 16px 20px 4px;
}

.page-contact .visit-accordion .accordion__panel p {
  margin: 0;
  max-width: 72ch;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--alloy-grey);
}

.page-contact .contact-outro {
  margin-top: clamp(36px, 5vw, 64px);
  padding-top: clamp(22px, 3vw, 30px);
  border-top: 1px solid var(--line);
}

.page-contact .contact-outro p {
  margin: 0;
  max-width: 74ch;
  font-size: var(--fs-16);
  line-height: 1.82;
  color: var(--alloy-grey);
}

.page-contact .contact-outro a {
  color: var(--ion-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 214, .45);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .matter-panel__grid {
    grid-template-columns: 1fr 1fr;
    gap: 34px;
  }
}

@media (min-width: 820px) {
  .page-contact .rhythm-band {
    grid-template-columns: repeat(3, 1fr);
    gap: 34px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero .vert-mark {
    display: block;
  }

  .page-contact .channel-map {
    grid-template-columns: repeat(12, 1fr);
    gap: 0 clamp(18px, 2vw, 26px);
    min-height: 400px;
  }

  .page-contact .channel-map__wire {
    display: block;
  }

  .page-contact .channel-node--mail {
    grid-column: 1 / span 4;
  }

  .page-contact .channel-node--phone {
    grid-column: 6 / span 3;
    margin-top: 64px;
  }

  .page-contact .channel-node--addr {
    grid-column: 9 / span 4;
    margin-top: 128px;
  }

  .page-contact .step {
    grid-template-columns: 64px 1fr;
    gap: 26px;
  }

  .page-contact .step::after {
    left: 31px;
  }

  .page-contact .step__num {
    width: 64px;
    height: 64px;
    font-size: var(--fs-28);
  }

  .page-contact .visit-row {
    grid-template-columns: 72px 1fr;
    gap: 24px;
  }
}

@media (min-width: 1100px) {
  .page-contact .contact-hero__lead {
    max-width: 58ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-node,
  .page-contact .channel-node:hover,
  .page-contact .copy-mail,
  .page-contact .tabs__btn,
  .page-contact .visit-row {
    transition: none;
    transform: none;
  }
}