/* ===== 意见反馈页 · page-contact ===== */
.page-contact {
  --contact-surface: rgba(20, 28, 63, .58);
  --contact-line: rgba(140, 154, 192, .24);
  --contact-raise: rgba(28, 40, 84, .78);
  --contact-halo: rgba(95, 227, 222, .16);
  display: block;
  background: var(--deep);
  color: var(--text);
  font-family: var(--font-body);
}

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

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(1.4rem, 4vw, 2.4rem) 0 clamp(2.4rem, 6vw, 4.2rem);
  overflow: hidden;
  background:
    radial-gradient(1100px 480px at 10% -14%, rgba(95, 227, 222, .15), transparent 60%),
    radial-gradient(860px 420px at 92% -6%, rgba(255, 196, 107, .10), transparent 62%),
    linear-gradient(180deg, #0B1026 0%, #111A3C 100%);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(140, 154, 192, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140, 154, 192, .07) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(70% 60% at 50% 30%, #000 20%, transparent 85%);
  -webkit-mask-image: radial-gradient(70% 60% at 50% 30%, #000 20%, transparent 85%);
}

.page-contact .breadcrumbs {
  position: relative;
  z-index: 1;
  margin-bottom: 1.4rem;
}

.page-contact .contact-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 4vw, 3rem);
  align-items: start;
}

.page-contact .contact-hero__lead h1 {
  margin: .5rem 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(2rem, 7.2vw, 3.35rem);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-contact .contact-hero__lead .lede {
  margin: 1rem 0 0;
  max-width: 44ch;
  font-size: clamp(1rem, 2.4vw, 1.075rem);
  line-height: 1.85;
  color: var(--text-soft);
}

/* 快速联系信息条 */
.page-contact .contact-quick {
  margin-top: 1.6rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  border: 1px solid var(--contact-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--contact-line);
}

.page-contact .contact-quick__item {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  padding: .85rem 1rem;
  background: rgba(11, 16, 38, .72);
}

.page-contact .contact-quick__key {
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .contact-quick__val {
  font-size: .95rem;
  letter-spacing: .03em;
  color: var(--cyan);
  word-break: break-word;
}

.page-contact .contact-quick__item:nth-child(3) .contact-quick__val {
  color: var(--amber);
}

/* 服务范围提示条 */
.page-contact .scope-strip {
  margin-top: 1.1rem;
  display: flex;
  align-items: flex-start;
  gap: .7rem;
  padding: .9rem 1rem;
  border: 1px solid rgba(255, 196, 107, .3);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius-sm);
  background: linear-gradient(100deg, rgba(255, 196, 107, .1), rgba(20, 28, 63, .5));
}

.page-contact .scope-strip .status {
  margin-top: .48rem;
  flex: 0 0 auto;
}

.page-contact .scope-strip p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.8;
  color: var(--text-soft);
}

/* 首屏图 */
.page-contact .contact-hero__media {
  margin: 0;
}

.page-contact .contact-hero__media .media__frame {
  border: 1px solid var(--contact-line);
  border-radius: var(--radius);
  overflow: hidden;
  background:
    linear-gradient(155deg, rgba(31, 78, 74, .65), rgba(59, 42, 90, .55) 58%, rgba(11, 16, 38, .92));
  box-shadow: 0 32px 70px -46px rgba(95, 227, 222, .55);
}

.page-contact .contact-hero__media img,
.page-contact .timeline-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .media__caption {
  margin-top: .7rem;
  font-size: .82rem;
  color: var(--mist);
  letter-spacing: .02em;
}

/* ---------- 通用章节 ---------- */
.page-contact .section {
  padding: clamp(3rem, 8vw, 5.5rem) 0;
}

.page-contact .section--tight {
  padding-top: clamp(2.4rem, 6vw, 4rem);
}

.page-contact .section__head {
  max-width: 62ch;
  margin-bottom: clamp(1.6rem, 4vw, 2.6rem);
}

.page-contact .section__head .eyebrow {
  margin: 0 0 .6rem;
  font-size: .74rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .section__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.2vw, 2.2rem);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-contact .section__desc {
  margin: .85rem 0 0;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 01 通道 ---------- */
.page-contact .tabs__bar {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  width: 100%;
  padding: .35rem;
  border: 1px solid var(--contact-line);
  border-radius: 999px;
  background: var(--contact-surface);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.page-contact .tab {
  flex: 1 1 auto;
  min-height: 44px;
  padding: .6rem 1rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--mist);
  font-family: var(--font-body);
  font-size: .94rem;
  font-weight: 500;
  cursor: pointer;
  transition: color .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease);
}

.page-contact .tab:hover {
  color: var(--text);
  border-color: var(--contact-line);
}

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

.page-contact .tab[aria-selected="true"] {
  color: #08122B;
  background: linear-gradient(135deg, var(--cyan), #93F4F0);
  box-shadow: 0 8px 24px -12px rgba(95, 227, 222, .85);
}

.page-contact .tabpanel {
  margin-top: 1.2rem;
  padding: clamp(1.2rem, 3.4vw, 2rem);
  border: 1px solid var(--contact-line);
  border-radius: var(--radius);
  background: var(--contact-surface);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.page-contact .channel__title {
  margin: 0 0 .7rem;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.6vw, 1.2rem);
  color: var(--amber);
}

.page-contact .tabpanel p {
  margin: 0;
  font-size: .98rem;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-contact .channel__list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .55rem;
}

.page-contact .channel__list li {
  position: relative;
  padding-left: 1.5rem;
  font-size: .94rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-contact .channel__list li::before {
  content: "";
  position: absolute;
  left: .2rem;
  top: .68rem;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-contact .channel__foot {
  margin-top: 1.2rem !important;
  font-size: .84rem !important;
  letter-spacing: .05em;
  color: var(--mist) !important;
  word-break: break-word;
}

/* ---------- 02 材料 ---------- */
.page-contact .prep-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-contact .prep-item {
  position: relative;
  padding: 1.25rem 1.25rem 1.35rem;
  border: 1px solid var(--contact-line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--contact-raise), rgba(20, 28, 63, .5));
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}

.page-contact .prep-item:hover {
  border-color: rgba(95, 227, 222, .45);
  transform: translateY(-3px);
}

.page-contact .prep-item__num {
  display: inline-block;
  margin-bottom: .7rem;
  font-size: .78rem;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-contact .prep-item__title {
  margin: 0 0 .55rem;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
}

.page-contact .prep-item__text {
  margin: 0;
  font-size: .93rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 03 进度 ---------- */
.page-contact .timeline-figure {
  margin: 0 0 clamp(1.8rem, 4vw, 2.8rem);
}

.page-contact .timeline-figure .media__frame {
  border: 1px solid var(--contact-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(120deg, rgba(59, 42, 90, .75), rgba(20, 28, 63, .9));
}

.page-contact .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: .9rem;
  counter-reset: step;
}

.page-contact .timeline__step {
  position: relative;
  padding: 1.1rem 1.1rem 1.15rem 1.1rem;
  border: 1px solid var(--contact-line);
  border-radius: var(--radius-sm);
  background: rgba(20, 28, 63, .6);
}

.page-contact .timeline__dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: .6rem;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px var(--contact-halo);
  vertical-align: middle;
}

.page-contact .timeline__stage {
  font-size: .74rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
  vertical-align: middle;
}

.page-contact .timeline__title {
  margin: .7rem 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.12rem;
  color: var(--text);
}

.page-contact .timeline__note {
  margin: .55rem 0 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-contact .timeline-note {
  margin-top: clamp(1.4rem, 3.5vw, 2rem);
}

.page-contact .timeline-note p {
  margin: 0;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-contact .timeline-note strong {
  color: var(--amber);
  font-weight: 600;
}

/* ---------- 04 覆盖 ---------- */
.page-contact .office-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
}

.page-contact .office-card {
  padding: clamp(1.2rem, 3.4vw, 1.8rem);
  border: 1px solid rgba(95, 227, 222, .22);
  border-radius: var(--radius);
  background: rgba(11, 16, 38, .48);
}

.page-contact .office-card--solid {
  border-color: var(--contact-line);
  background: linear-gradient(165deg, rgba(20, 28, 63, .92), rgba(11, 16, 38, .9));
}

.page-contact .office-card__title {
  margin: 0 0 1rem;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
}

.page-contact .region-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .5rem .8rem;
}

.page-contact .region-list li {
  position: relative;
  padding-left: 1.1rem;
  font-size: .94rem;
  line-height: 1.7;
  color: var(--text-soft);
}

.page-contact .region-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
}

.page-contact .office-card__note {
  margin: 1.15rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--contact-line);
  font-size: .88rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .office-rows {
  margin: 0;
  display: grid;
  gap: 1px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--contact-line);
}

.page-contact .office-row {
  display: flex;
  flex-direction: column;
  gap: .25rem;
  padding: .8rem .95rem;
  background: rgba(20, 28, 63, .95);
}

.page-contact .office-row__key {
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .office-row__val {
  margin: 0;
  font-size: .95rem;
  line-height: 1.7;
  color: var(--text);
  word-break: break-word;
}

.page-contact .office-row:nth-child(1) .office-row__val,
.page-contact .office-row:nth-child(2) .office-row__val {
  color: var(--cyan);
}

/* 关联链接 */
.page-contact .related-links {
  margin-top: clamp(1.6rem, 4vw, 2.6rem);
  padding-top: clamp(1.4rem, 3.5vw, 2rem);
  border-top: 1px solid var(--contact-line);
}

.page-contact .related-links__lead {
  margin: 0 0 .9rem;
  font-size: .78rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .related-links__row {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-contact .contact-quick {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-contact .tabs__bar {
    width: auto;
  }

  .page-contact .tab {
    flex: 0 0 auto;
    min-width: 8.5rem;
  }

  .page-contact .office-row {
    flex-direction: row;
    align-items: baseline;
    gap: 1rem;
  }

  .page-contact .office-row__key {
    flex: 0 0 6.5rem;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    gap: clamp(2rem, 5vw, 4rem);
    align-items: center;
  }

  .page-contact .contact-hero__media {
    align-self: stretch;
  }

  .page-contact .contact-hero__media .media__frame {
    height: 100%;
  }

  .page-contact .contact-hero__media img {
    height: 100%;
    object-fit: cover;
  }

  .page-contact .prep-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 1.1rem;
  }

  .page-contact .prep-item {
    grid-column: span 2;
  }

  .page-contact .prep-item:nth-child(4) {
    grid-column: 2 / span 2;
  }

  .page-contact .prep-item:nth-child(5) {
    grid-column: 4 / span 2;
  }

  .page-contact .office-grid {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    gap: 1.4rem;
  }

  /* 横向处理进度轴 */
  .page-contact .timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-contact .timeline__step {
    padding: 1.5rem 1.4rem 0 0;
    border: none;
    border-top: 2px solid var(--edge);
    border-radius: 0;
    background: transparent;
  }

  .page-contact .timeline__step:nth-child(4) {
    padding-right: 0;
  }

  .page-contact .timeline__dot {
    position: absolute;
    top: -7px;
    left: 0;
    margin: 0;
    display: block;
  }

  .page-contact .timeline__step:nth-child(4) .timeline__dot {
    background: var(--amber);
    box-shadow: 0 0 0 4px rgba(255, 196, 107, .18);
  }

  .page-contact .timeline__stage {
    display: block;
  }

  .page-contact .timeline__note {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height .36s var(--ease), opacity .3s var(--ease), margin-top .36s var(--ease);
  }

  .page-contact .timeline__step:hover .timeline__note,
  .page-contact .timeline__step:focus-within .timeline__note {
    max-height: 11rem;
    margin-top: .6rem;
    opacity: 1;
  }

  .page-contact .timeline__step:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 6px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .prep-item,
  .page-contact .tab,
  .page-contact .timeline__note {
    transition: none;
  }

  .page-contact .prep-item:hover {
    transform: none;
  }
}
</main>