/* ===== 联系与反馈 · 页面专属样式 ===== */
.page-contact {
  --contact-cut: var(--cut);
}

/* --- 首屏 --- */
.page-contact .contact-hero {
  padding-block: clamp(24px, 4vw, 52px) clamp(16px, 2.5vw, 28px);
}

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

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 52px;
    align-items: end;
  }
}

.page-contact .contact-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 4.6vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.012em;
  color: var(--ivory);
  margin: 14px 0 18px;
  max-width: 17ch;
}

.page-contact .contact-hero__text {
  font-size: clamp(15px, 1.1vw, 16.5px);
  line-height: 1.85;
  color: var(--paper);
  max-width: 40em;
  margin: 0 0 22px;
}

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

/* --- 服务时段牌 --- */
.page-contact .contact-serve {
  border: 1px solid var(--line-strong);
  background: linear-gradient(180deg, rgba(22, 40, 60, 0.92), rgba(11, 22, 34, 0.92));
  padding: 22px 20px 24px;
  clip-path: polygon(var(--contact-cut) 0, 100% 0, 100% calc(100% - var(--contact-cut)), calc(100% - var(--contact-cut)) 100%, 0 100%, 0 var(--contact-cut));
}

.page-contact .contact-serve__time {
  font-size: clamp(22px, 2.2vw, 30px);
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.02em;
  margin: 14px 0 16px;
  line-height: 1.1;
}

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

.page-contact .contact-serve__list li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--paper-2);
}

.page-contact .contact-serve__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 6px;
  height: 6px;
  background: var(--gold);
  transform: rotate(45deg);
}

/* --- 横幅图 --- */
.page-contact .contact-banner {
  margin: clamp(22px, 3vw, 40px) auto clamp(8px, 1.5vw, 16px);
  padding: 0;
}

.page-contact .contact-banner__frame {
  border: 1px solid var(--line);
  background: var(--steel);
  overflow: hidden;
  clip-path: polygon(var(--contact-cut) 0, 100% 0, 100% 100%, 0 100%, 0 var(--contact-cut));
}

.page-contact .contact-banner__frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  filter: saturate(0.78) contrast(1.06);
}

.page-contact .contact-banner__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--slate);
}

/* --- 三条通道 --- */
.page-contact .contact-channels {
  margin-block: clamp(26px, 4vw, 56px);
}

.page-contact .contact-channels__intro {
  max-width: 46em;
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate);
}

.page-contact .channel-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
  margin-top: 26px;
}

@media (min-width: 760px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

.page-contact .channel-slide {
  position: relative;
  background: linear-gradient(180deg, rgba(22, 40, 60, 0.55), rgba(11, 22, 34, 0.88));
  border: 1px solid var(--line);
  border-top-width: 3px;
  padding: 20px 20px 22px;
  clip-path: polygon(0 var(--contact-cut), var(--contact-cut) 0, 100% 0, 100% calc(100% - var(--contact-cut)), calc(100% - var(--contact-cut)) 100%, 0 100%);
  transition: transform var(--speed) ease, box-shadow var(--speed) ease, border-color var(--speed) ease, background var(--speed) ease;
  outline: none;
}

.page-contact .channel-slide:hover,
.page-contact .channel-slide:focus {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2);
  border-color: var(--line-strong);
}

.page-contact .channel-slide:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--cyan), var(--shadow-2);
}

.page-contact .channel-slide--cyan { border-top-color: var(--cyan); }
.page-contact .channel-slide--gold { border-top-color: var(--gold); }
.page-contact .channel-slide--rose { border-top-color: var(--rose); }

.page-contact .channel-slide__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 1.7vw, 22px);
  line-height: 1.28;
  color: var(--ivory);
  margin: 14px 0 10px;
}

.page-contact .channel-slide__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--paper);
  opacity: 0.86;
}

.page-contact .channel-slide__more {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 220ms ease, opacity 180ms ease, margin-top 180ms ease;
}

.page-contact .channel-slide:hover .channel-slide__more,
.page-contact .channel-slide:focus .channel-slide__more,
.page-contact .channel-slide:focus-within .channel-slide__more {
  max-height: 360px;
  opacity: 1;
  margin-top: 16px;
}

.page-contact .channel-slide__moretitle {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .channel-slide__addr {
  display: inline-block;
  margin: 0 0 10px;
  padding: 6px 10px;
  font-size: 12.5px;
  line-height: 1.4;
  color: var(--gold);
  background: rgba(242, 178, 60, 0.1);
  border-left: 2px solid var(--gold);
  word-break: break-all;
  user-select: all;
}

.page-contact .channel-slide--rose .channel-slide__addr {
  color: var(--rose);
  background: rgba(255, 61, 110, 0.1);
  border-left-color: var(--rose);
}

.page-contact .channel-slide__more ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 6px;
}

.page-contact .channel-slide__more li {
  position: relative;
  padding-left: 13px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--paper-2);
}

.page-contact .channel-slide__more li::before {
  content: "›";
  position: absolute;
  left: 0;
  top: -1px;
  font-size: 15px;
  line-height: 1.4;
  color: var(--cyan);
}

.page-contact .channel-slide--gold .channel-slide__more li::before { color: var(--gold); }
.page-contact .channel-slide--rose .channel-slide__more li::before { color: var(--rose); }

/* --- 检索协助 --- */
.page-contact .contact-assist {
  margin-block: clamp(28px, 4vw, 64px);
}

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

@media (min-width: 900px) {
  .page-contact .contact-assist__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }
}

.page-contact .contact-assist__text {
  max-width: 38em;
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.88;
  color: var(--paper);
}

.page-contact .contact-assist__text--muted {
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--slate);
}

.page-contact .assist-brief {
  background: var(--paper);
  color: var(--ink);
  padding: 24px 22px 26px;
  clip-path: polygon(0 0, calc(100% - var(--contact-cut)) 0, 100% var(--contact-cut), 100% 100%, var(--contact-cut) 100%, 0 calc(100% - var(--contact-cut)));
  box-shadow: var(--shadow-1);
}

.page-contact .assist-brief h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.3;
  color: var(--ink);
  margin: 0 0 16px;
}

.page-contact .assist-brief dl {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-contact .assist-brief dt {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #6f6554;
  margin-bottom: 4px;
}

.page-contact .assist-brief dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.68;
  color: #1c1b18;
}

/* --- 勘误流程 --- */
.page-contact .contact-fix {
  margin-block: clamp(28px, 4vw, 64px);
}

.page-contact .contact-fix__intro {
  margin: 10px 0 0;
  max-width: 44em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate);
}

.page-contact .journey {
  list-style: none;
  padding: 0;
  margin: 28px 0 0;
  display: grid;
  gap: 12px;
}

@media (min-width: 880px) {
  .page-contact .journey {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }
}

.page-contact .journey__step {
  position: relative;
  padding: 20px 18px 22px;
  background: rgba(22, 40, 60, 0.42);
  border: 1px solid var(--line);
  transition: background var(--speed) ease, transform var(--speed) ease, border-color var(--speed) ease;
  outline: none;
}

@media (min-width: 880px) {
  .page-contact .journey__step {
    border-right-width: 0;
  }
  .page-contact .journey__step:last-child {
    border-right-width: 1px;
  }
}

.page-contact .journey__step:hover,
.page-contact .journey__step:focus {
  background: rgba(22, 40, 60, 0.86);
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.page-contact .journey__step:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--cyan);
}

.page-contact .journey__num {
  display: block;
  font-size: clamp(24px, 2.2vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.page-contact .journey__step h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.3;
  color: var(--ivory);
  margin: 0 0 8px;
}

.page-contact .journey__step p {
  margin: 0;
  font-size: 13.8px;
  line-height: 1.72;
  color: var(--paper);
  opacity: 0.85;
}

.page-contact .journey__step p.journey__need {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.01em;
  color: var(--slate);
  opacity: 1;
  transition: color var(--speed) ease;
}

.page-contact .journey__step:hover p.journey__need,
.page-contact .journey__step:focus p.journey__need {
  color: var(--gold);
}

/* --- 资料协作 --- */
.page-contact .contact-collab {
  margin-block: clamp(28px, 4vw, 64px);
}

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

@media (min-width: 880px) {
  .page-contact .contact-collab__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 46px;
    align-items: start;
  }
}

.page-contact .contact-collab .vault-btn {
  margin-top: 6px;
}

.page-contact .collab-fields {
  border: 1px solid var(--line);
  background: rgba(11, 22, 34, 0.62);
  padding: 22px 20px 24px;
  clip-path: polygon(var(--contact-cut) 0, 100% 0, 100% calc(100% - var(--contact-cut)), calc(100% - var(--contact-cut)) 100%, 0 100%, 0 var(--contact-cut));
}

.page-contact .collab-fields h3 {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

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

.page-contact .collab-fields li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
}

.page-contact .collab-fields li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  background: var(--gold);
  transform: rotate(45deg);
}

.page-contact .collab-fields__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.78;
  color: var(--slate);
}

/* --- 办公与到访 --- */
.page-contact .contact-visit {
  margin-block: clamp(28px, 4vw, 64px);
}

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

@media (min-width: 880px) {
  .page-contact .visit-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: 26px;
    align-items: stretch;
  }
}

.page-contact .visit-card {
  background: var(--paper);
  color: var(--ink);
  padding: 24px 22px 26px;
  clip-path: polygon(0 var(--contact-cut), var(--contact-cut) 0, 100% 0, 100% 100%, 0 100%);
  box-shadow: var(--shadow-1);
}

.page-contact .visit-card dl {
  margin: 0;
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}

@media (min-width: 560px) {
  .page-contact .visit-card dl {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .visit-card dt {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #6f6554;
  margin-bottom: 6px;
}

.page-contact .visit-card dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.68;
  color: #14110f;
  word-break: break-word;
}

.page-contact .visit-card dd.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}

.page-contact .visit-note {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid rgba(20, 17, 15, 0.16);
  font-size: 13px;
  line-height: 1.78;
  color: #463f33;
}

.page-contact .visit-media {
  margin: 0;
  min-height: 220px;
  border: 1px solid var(--line);
  background: var(--steel);
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - var(--contact-cut)) 0, 100% var(--contact-cut), 100% 100%, var(--contact-cut) 100%, 0 calc(100% - var(--contact-cut)));
}

.page-contact .visit-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.68) brightness(0.86);
}

/* --- 提交前自查 --- */
.page-contact .contact-preflight {
  margin-block: clamp(28px, 4vw, 64px) clamp(40px, 6vw, 92px);
}

.page-contact .checklist {
  list-style: none;
  padding: 0;
  margin: 26px 0 0;
  display: grid;
  gap: 10px;
}

@media (min-width: 720px) {
  .page-contact .checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }
}

.page-contact .checklist li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 16px 18px;
  background: rgba(22, 40, 60, 0.38);
  border-left: 3px solid var(--slate);
  transition: border-color var(--speed) ease, background var(--speed) ease;
}

.page-contact .checklist li:hover,
.page-contact .checklist li:focus-within {
  border-left-color: var(--cyan);
  background: rgba(22, 40, 60, 0.72);
}

.page-contact .checklist__idx {
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
  padding-top: 3px;
  letter-spacing: 0.04em;
}

.page-contact .checklist h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15.5px;
  line-height: 1.35;
  color: var(--ivory);
  margin: 0 0 6px;
}

.page-contact .checklist p {
  margin: 0;
  font-size: 13.8px;
  line-height: 1.72;
  color: var(--paper);
  opacity: 0.86;
}

/* --- 响应式收口 --- */
@media (max-width: 520px) {
  .page-contact .contact-serve {
    padding: 18px 16px 20px;
  }
  .page-contact .channel-slide,
  .page-contact .journey__step,
  .page-contact .collab-fields,
  .page-contact .visit-card,
  .page-contact .assist-brief {
    padding-left: 16px;
    padding-right: 16px;
  }
  .page-contact .journey__step:hover,
  .page-contact .journey__step:focus,
  .page-contact .channel-slide:hover,
  .page-contact .channel-slide:focus {
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-slide,
  .page-contact .channel-slide__more,
  .page-contact .journey__step,
  .page-contact .checklist li {
    transition: none;
  }
  .page-contact .channel-slide:hover,
  .page-contact .channel-slide:focus,
  .page-contact .journey__step:hover,
  .page-contact .journey__step:focus {
    transform: none;
  }
}