.page-contact {
  --contact-hair: rgba(11, 27, 51, .10);
  --contact-hair-strong: rgba(11, 27, 51, .18);
  --contact-card: #ffffff;
  background: var(--paper);
  color: var(--ink);
  padding-bottom: 24px;
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  background: linear-gradient(158deg, var(--ink) 0%, var(--ink-2) 54%, var(--scroll) 100%);
  color: var(--paper);
  padding: 32px 0 64px;
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--amber) 0 34%, var(--coral) 34% 67%, var(--teal) 67% 100%);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  right: -140px;
  top: 40%;
  width: 380px;
  height: 380px;
  border: 1px solid rgba(232, 238, 247, .10);
  border-radius: 50%;
  pointer-events: none;
}

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

.page-contact .crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .08em;
  font-variant-numeric: tabular-nums;
}

.page-contact .crumbs-link {
  color: rgba(245, 248, 252, .62);
  text-decoration: none;
  transition: color .2s var(--ease);
}

.page-contact .crumbs-link:hover,
.page-contact .crumbs-link:focus-visible {
  color: var(--amber-hi);
}

.page-contact .crumbs-sep {
  color: rgba(245, 248, 252, .28);
}

.page-contact .crumbs-current {
  color: var(--amber);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: 30px;
  margin-top: 34px;
}

.page-contact .contact-hero__text {
  max-width: 40rem;
}

.page-contact .eyebrow {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--amber);
}

.page-contact .contact-hero h1 {
  margin: 14px 0 18px;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(30px, 6.6vw, 46px);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: #ffffff;
}

.page-contact .contact-hero .lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(245, 248, 252, .76);
}

.page-contact .contact-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-contact .contact-hero__figure {
  margin: 0;
  aspect-ratio: 5 / 3;
  border: 1px solid rgba(232, 238, 247, .16);
  border-radius: var(--r-l);
  background: var(--ink-2);
  overflow: hidden;
}

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

/* ---------- 章节带通用微调 ---------- */

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

.page-contact .section-band h2 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(22px, 4.4vw, 28px);
  line-height: 1.3;
  letter-spacing: -.02em;
  color: var(--ink);
}

/* ---------- 01 联系渠道 ---------- */

.page-contact .contact-channels {
  padding: 68px 0 8px;
}

.page-contact .channel-layout {
  display: grid;
  gap: 24px;
}

.page-contact .channel-stack {
  display: grid;
  gap: 16px;
}

.page-contact .channel {
  position: relative;
  background: var(--contact-card);
  border: 1px solid var(--contact-hair);
  border-left: 3px solid var(--amber);
  border-radius: var(--r-m);
  padding: 22px 22px 20px;
  box-shadow: var(--shadow);
  transition: transform .24s var(--ease), border-left-color .24s var(--ease);
}

.page-contact .channel:hover {
  transform: translateY(-2px);
}

.page-contact .channel--phone {
  border-left-color: var(--teal);
}

.page-contact .channel-label {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--slate);
}

.page-contact .channel-value {
  margin: 0 0 12px;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(20px, 5.4vw, 27px);
  line-height: 1.32;
  letter-spacing: -.01em;
  color: var(--ink);
  overflow-wrap: anywhere;
  user-select: all;
}

.page-contact .channel--phone .channel-value {
  font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
}

.page-contact .channel-note {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.76;
  color: var(--slate);
}

.page-contact .channel-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
}

.page-contact .channel-aside {
  border: 1px solid rgba(46, 90, 143, .18);
  background: var(--mist);
  border-radius: var(--r-m);
  padding: 22px;
}

.page-contact .aside-title {
  margin: 0 0 14px;
  font-family: var(--display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.45;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-contact .aside-list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .aside-list li {
  padding-left: 16px;
  position: relative;
}

.page-contact .aside-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 6px;
  height: 1px;
  background: var(--route);
}

.page-contact .aside-link {
  font-size: 14px;
  line-height: 1.7;
  color: var(--scroll);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 90, 143, .28);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .aside-link:hover,
.page-contact .aside-link:focus-visible {
  color: var(--amber-ink);
  border-color: var(--amber);
}

.page-contact .aside-foot {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid rgba(46, 90, 143, .16);
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 02 求助准备 ---------- */

.page-contact .contact-prep {
  margin-top: 68px;
  padding: 60px 0 64px;
  background: var(--mist);
}

.page-contact .prep {
  display: grid;
  gap: 20px;
}

.page-contact .prep-list {
  display: grid;
  gap: 10px;
}

.page-contact .prep-item {
  position: relative;
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px 18px;
  background: var(--contact-card);
  border: 1px solid var(--contact-hair);
  border-radius: var(--r-m);
  cursor: pointer;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-contact .prep-item:hover {
  border-color: var(--contact-hair-strong);
}

.page-contact .prep-item:focus-within {
  outline: 2px solid var(--route);
  outline-offset: 2px;
}

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

.page-contact .prep-box {
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid var(--contact-hair-strong);
  border-radius: var(--r-s);
  background: var(--paper);
  transition: background .18s var(--ease), border-color .18s var(--ease);
}

.page-contact .prep-box::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 3px;
  width: 5px;
  height: 10px;
  border-right: 2px solid #ffffff;
  border-bottom: 2px solid #ffffff;
  transform: rotate(45deg) scale(.4);
  opacity: 0;
  transition: opacity .18s var(--ease), transform .18s var(--ease);
}

.page-contact .prep-item input:checked ~ .prep-box {
  background: var(--teal);
  border-color: var(--teal);
}

.page-contact .prep-item input:checked ~ .prep-box::after {
  opacity: 1;
  transform: rotate(45deg) scale(1);
}

.page-contact .prep-text {
  display: block;
  min-width: 0;
}

.page-contact .prep-title {
  display: block;
  margin-bottom: 4px;
  font-family: var(--display);
  font-weight: 800;
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
}

.page-contact .prep-desc {
  display: block;
  font-size: 14px;
  line-height: 1.72;
  color: var(--slate);
}

.page-contact .prep-template {
  border: 1px dashed rgba(46, 90, 143, .42);
  border-radius: var(--r-m);
  background: rgba(255, 255, 255, .62);
  padding: 20px;
  transition: border-color .26s var(--ease), background .26s var(--ease), box-shadow .26s var(--ease);
}

.page-contact .prep:has(#prep-device:checked):has(#prep-browser:checked):has(#prep-step:checked) .prep-template {
  border-color: var(--teal);
  border-style: solid;
  background: var(--contact-card);
  box-shadow: var(--shadow);
}

.page-contact .prep-template__label {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--amber-ink);
}

.page-contact .prep-template__text {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-2);
  overflow-wrap: anywhere;
}

.page-contact .prep-template__hint {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--contact-hair);
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 03 响应节奏 ---------- */

.page-contact .contact-flow {
  padding: 68px 0 64px;
}

.page-contact .flow-layout {
  display: grid;
  gap: 30px;
}

.page-contact .flow-track {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .flow-track::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 14px;
  bottom: 18px;
  width: 2px;
  background: linear-gradient(180deg, var(--amber), var(--route));
  opacity: .38;
}

.page-contact .flow-node {
  position: relative;
  padding: 0 0 26px 38px;
}

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

.page-contact .flow-dot {
  position: absolute;
  left: 2px;
  top: 5px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--amber);
}

.page-contact .flow-node:last-child .flow-dot {
  background: var(--teal);
  border-color: var(--teal);
}

.page-contact .flow-time {
  margin: 0 0 6px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--amber-ink);
  font-variant-numeric: tabular-nums;
}

.page-contact .flow-node:last-child .flow-time {
  color: var(--scroll);
}

.page-contact .flow-body {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-2);
}

.page-contact .flow-note {
  margin: 22px 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--coral);
  border-radius: 0 var(--r-m) var(--r-m) 0;
  background: rgba(255, 107, 74, .07);
  font-size: 14px;
  line-height: 1.74;
  color: var(--ink-2);
}

.page-contact .flow-figure {
  margin: 0;
  aspect-ratio: 2 / 1;
  border: 1px solid var(--contact-hair);
  border-radius: var(--r-l);
  background: var(--mist);
  overflow: hidden;
}

.page-contact .flow-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 04 其他信息 ---------- */

.page-contact .contact-meta {
  padding: 0 0 8px;
}

.page-contact .meta-grid {
  display: grid;
  gap: 1px;
  background: var(--contact-hair);
  border: 1px solid var(--contact-hair);
  border-radius: var(--r-m);
  overflow: hidden;
}

.page-contact .meta-block {
  background: var(--contact-card);
  padding: 20px 22px;
}

.page-contact .meta-block__label {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--slate);
}

.page-contact .meta-block__value {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.65;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .meta-foot {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

.page-contact .meta-link {
  color: var(--scroll);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 90, 143, .3);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .meta-link:hover,
.page-contact .meta-link:focus-visible {
  color: var(--amber-ink);
  border-color: var(--amber);
}

/* ---------- 尾部路线 ---------- */

.page-contact .contact-tail {
  padding: 56px 0 72px;
}

.page-contact .tail-line {
  height: 1px;
  background: var(--contact-hair);
  margin-bottom: 26px;
}

.page-contact .tail-text {
  margin: 0 0 16px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--slate);
}

.page-contact .tail-links {
  display: grid;
  gap: 12px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-contact .meta-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .tail-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .prep {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero {
    padding: 44px 0 88px;
  }

  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 56px;
    align-items: center;
    margin-top: 46px;
  }

  .page-contact .contact-channels {
    padding-top: 88px;
  }

  .page-contact .channel-layout {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 36px;
    align-items: start;
  }

  .page-contact .contact-prep {
    margin-top: 88px;
    padding: 76px 0;
  }

  .page-contact .contact-flow {
    padding: 88px 0;
  }

  .page-contact .flow-layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: 54px;
    align-items: center;
  }

  .page-contact .contact-tail {
    padding: 64px 0 88px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .prep-item,
  .page-contact .prep-box,
  .page-contact .prep-box::after,
  .page-contact .prep-template {
    transition: none;
  }

  .page-contact .channel:hover {
    transform: none;
  }
}