.page-contact {
  --lane-rail: 92px;
  --lane-pad: 28px;
  --lane-glow: rgba(47, 243, 214, .16);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 40px 0 54px;
  border-bottom: var(--edge);
}

.page-contact .contact-hero__media {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  opacity: .4;
}

.page-contact .contact-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 11, 26, .3) 0%, rgba(6, 11, 26, .88) 58%, var(--void) 100%);
}

.page-contact .contact-hero__inner {
  position: relative;
}

.page-contact .contact-hero__index {
  margin: 24px 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .contact-hero h1 {
  margin: 0 0 18px;
  max-width: 16ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6.4vw, 62px);
  line-height: 1.08;
  letter-spacing: -.012em;
  color: var(--paper);
}

.page-contact .contact-hero__lede {
  margin: 0 0 28px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

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

/* ---------- 反馈入口优先卡 ---------- */
.page-contact .channel-first {
  padding-top: 54px;
}

.page-contact .entry {
  position: relative;
  padding: 34px 22px 28px;
  border: 1px solid rgba(47, 243, 214, .42);
  border-radius: var(--radius);
  background: linear-gradient(158deg, rgba(47, 243, 214, .1) 0%, rgba(13, 23, 48, .96) 44%, var(--console) 100%);
  box-shadow: var(--shadow-console);
}

.page-contact .entry__badge {
  position: absolute;
  top: -13px;
  left: 22px;
  padding: 4px 11px;
  border-radius: 4px;
  background: var(--cyan);
  color: var(--void);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
}

.page-contact .entry__eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan-lt);
}

.page-contact .entry__title {
  margin: 0 0 16px;
  max-width: 26ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3.4vw, 33px);
  line-height: 1.28;
  color: var(--paper);
}

.page-contact .entry__body p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .entry__list {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-contact .entry__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--paper);
}

.page-contact .entry__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 9px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .entry__foot {
  font-size: 14px;
  color: var(--muted);
}

.page-contact .entry__body a {
  color: var(--cyan-lt);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 243, 214, .4);
}

.page-contact .entry__body a:hover,
.page-contact .entry__body a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .entry__cta {
  margin-top: 4px;
}

/* ---------- 三条联络通道 ---------- */
.page-contact .channel-lanes {
  padding-top: 0;
}

.page-contact .lanes__head {
  margin-bottom: 26px;
  padding-top: 46px;
  border-top: 1px solid var(--steel);
}

.page-contact .lanes__index {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--amber);
}

.page-contact .lanes__head h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4vw, 40px);
  line-height: 1.12;
  color: var(--paper);
}

.page-contact .lanes__lede {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .lanes__stack {
  display: grid;
  gap: 18px;
}

.page-contact .lane {
  display: grid;
  grid-template-columns: 1fr;
  overflow: hidden;
  border: var(--edge);
  border-radius: var(--radius);
  background: var(--console);
  transition: border-color .24s var(--ease), transform .24s var(--ease);
}

.page-contact .lane__tag {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 14px 22px;
  border-bottom: 1px solid var(--steel);
  background: linear-gradient(90deg, var(--lane-glow), rgba(47, 243, 214, 0));
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .34em;
  color: var(--cyan);
}

.page-contact .lane--phone .lane__tag {
  background: linear-gradient(90deg, rgba(255, 176, 32, .14), rgba(255, 176, 32, 0));
  color: var(--amber);
}

.page-contact .lane--address .lane__tag {
  background: linear-gradient(90deg, rgba(147, 161, 190, .14), rgba(147, 161, 190, 0));
  color: var(--muted);
}

.page-contact .lane__content {
  padding: 24px 22px 26px;
}

.page-contact .lane__eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .lane__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 3vw, 27px);
  line-height: 1.3;
  color: var(--paper);
}

.page-contact .lane__text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .lane__link {
  font-family: var(--font-mono);
  font-size: 1.02em;
  color: var(--cyan-lt);
  text-decoration: none;
  border-bottom: 1px solid rgba(140, 255, 240, .45);
  word-break: break-all;
}

.page-contact .lane__link:hover,
.page-contact .lane__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .lane__list {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .lane__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper);
}

.page-contact .lane__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .7em;
  width: 8px;
  height: 1px;
  background: var(--steel);
}

.page-contact .lane--phone .lane__list li::before {
  background: var(--amber);
}

.page-contact .lane__btn {
  transition: transform .22s var(--ease);
}

.page-contact .lane:hover .lane__btn,
.page-contact .lane:focus-within .lane__btn {
  transform: translateY(-3px);
}

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

.page-contact .lane__foot a {
  color: var(--cyan-lt);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 243, 214, .4);
}

/* ---------- 数据合作 ---------- */
.page-contact .coop {
  padding-top: 0;
}

.page-contact .coop__card {
  padding: 30px 22px 30px;
  border: 1px solid rgba(255, 90, 43, .55);
  border-radius: var(--radius);
  background: linear-gradient(155deg, rgba(255, 90, 43, .12) 0%, rgba(13, 23, 48, .96) 46%, var(--console) 100%);
  box-shadow: var(--shadow-console);
}

.page-contact .coop__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.page-contact .coop__badge {
  flex: none;
  padding: 3px 10px;
  border: 1px solid var(--flame);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--flame);
}

.page-contact .coop__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .coop__title {
  margin: 0 0 14px;
  max-width: 24ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3.4vw, 32px);
  line-height: 1.26;
  color: var(--paper);
}

.page-contact .coop__text {
  margin: 0 0 22px;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .coop__prep {
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  border: var(--edge);
  border-radius: var(--radius-sm);
  background: var(--steel);
  overflow: hidden;
}

.page-contact .coop__prep li {
  display: grid;
  gap: 6px;
  padding: 13px 16px;
  background: rgba(6, 11, 26, .92);
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .coop__prep-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--flame);
}

/* ---------- 流程 ---------- */
.page-contact .flow {
  padding-top: 54px;
  padding-bottom: 62px;
  border-top: var(--edge);
  background: linear-gradient(180deg, rgba(13, 23, 48, .9), rgba(6, 11, 26, 1));
}

.page-contact .flow__head {
  margin-bottom: 30px;
}

.page-contact .flow__index {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--cyan);
}

.page-contact .flow__head h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.14;
  color: var(--paper);
}

.page-contact .flow__lede {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .flow__track {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
  counter-reset: flowstep;
}

.page-contact .flow__step {
  border: var(--edge);
  border-radius: var(--radius-sm);
  background: rgba(6, 11, 26, .72);
  padding: 4px 18px 0;
}

.page-contact .flow__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--paper);
}

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

.page-contact .flow__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--muted);
}

.page-contact .flow__step[open] .flow__summary::after {
  content: "–";
  color: var(--cyan);
}

.page-contact .flow__summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-contact .flow__dot {
  flex: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(47, 243, 214, .18);
}

.page-contact .flow__node:nth-child(2) .flow__dot {
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(255, 176, 32, .18);
}

.page-contact .flow__node:nth-child(3) .flow__dot {
  background: var(--flame);
  box-shadow: 0 0 0 4px rgba(255, 90, 43, .18);
}

.page-contact .flow__desc {
  margin: 0;
  padding: 2px 0 18px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .flow__step[open] .flow__desc {
  animation: pageContactFade .26s var(--ease);
}

.page-contact .flow__figure {
  margin: 30px 0 0;
  border: var(--edge);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--void);
}

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

@keyframes pageContactFade {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-contact .entry {
    padding: 40px 34px 34px;
  }

  .page-contact .entry__badge {
    left: 34px;
  }

  .page-contact .coop__card {
    padding: 38px 34px 36px;
  }

  .page-contact .coop__prep li {
    grid-template-columns: 116px 1fr;
    gap: 16px;
    align-items: baseline;
  }

  .page-contact .lane {
    grid-template-columns: var(--lane-rail) 1fr;
    align-items: stretch;
  }

  .page-contact .lane__tag {
    writing-mode: vertical-rl;
    text-orientation: upright;
    justify-content: center;
    padding: 26px 0;
    border-bottom: 0;
    border-right: 1px solid var(--steel);
    letter-spacing: .42em;
    background: linear-gradient(180deg, var(--lane-glow), rgba(47, 243, 214, 0) 78%);
  }

  .page-contact .lane--phone .lane__tag {
    background: linear-gradient(180deg, rgba(255, 176, 32, .14), rgba(255, 176, 32, 0) 78%);
  }

  .page-contact .lane--address .lane__tag {
    background: linear-gradient(180deg, rgba(147, 161, 190, .14), rgba(147, 161, 190, 0) 78%);
  }

  .page-contact .lane__content {
    padding: 30px 30px 32px;
  }

  .page-contact .flow__track {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }

  .page-contact .flow__track::before {
    content: "";
    position: absolute;
    top: 21px;
    left: 8%;
    right: 8%;
    height: 1px;
    background: linear-gradient(90deg, var(--cyan), rgba(255, 176, 32, .55) 52%, rgba(255, 90, 43, .55));
    opacity: .5;
  }

  .page-contact .flow__step {
    position: relative;
    background: rgba(6, 11, 26, .82);
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-contact .contact-hero {
    padding: 56px 0 72px;
  }

  .page-contact .entry {
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "eyebrow cta"
      "title cta"
      "body cta";
    column-gap: 40px;
    align-items: start;
    padding: 46px 44px 42px;
  }

  .page-contact .entry__badge {
    left: 44px;
  }

  .page-contact .entry__eyebrow {
    grid-area: eyebrow;
  }

  .page-contact .entry__title {
    grid-area: title;
    max-width: 30ch;
  }

  .page-contact .entry__body {
    grid-area: body;
    max-width: 74ch;
  }

  .page-contact .entry__cta {
    grid-area: cta;
    align-self: center;
    margin-top: 24px;
  }

  .page-contact .lanes__stack {
    gap: 22px;
  }

  .page-contact .lane__content {
    padding: 34px 40px 36px;
  }

  .page-contact .lane__text {
    max-width: 70ch;
  }

  .page-contact .coop__prep {
    max-width: 900px;
  }

  .page-contact .flow__figure {
    max-width: 1000px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .lane,
  .page-contact .lane__btn {
    transition: none;
  }

  .page-contact .lane:hover .lane__btn,
  .page-contact .lane:focus-within .lane__btn {
    transform: none;
  }

  .page-contact .flow__step[open] .flow__desc {
    animation: none;
  }
}