/* ===== 意见反馈页 · page-contact ===== */
.page-contact {
  padding-bottom: clamp(2.5rem, 6vw, 5rem);
}

.page-contact img {
  max-width: 100%;
  height: auto;
}

/* --- 首屏框景 --- */
.page-contact .contact-hero {
  margin: 1.25rem 0 clamp(2rem, 5vw, 3.5rem);
  border: 2px solid var(--ink-500);
  border-radius: var(--radius);
  background: linear-gradient(165deg, var(--ink-850) 0%, var(--ink-950) 58%);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-contact .contact-hero__frame {
  position: relative;
  padding: clamp(20px, 3.4vw, 46px);
}

.page-contact .contact-hero__frame::after {
  content: "";
  position: absolute;
  top: 12px;
  right: 12px;
  width: 64px;
  height: 64px;
  border-top: 2px solid var(--cyan-400);
  border-right: 2px solid var(--cyan-400);
  opacity: .55;
  pointer-events: none;
}

.page-contact .contact-hero__title {
  max-width: 14em;
  margin: .75rem 0 1rem;
  font-family: var(--font-head);
  font-size: var(--fs-h1);
  font-weight: 700;
  line-height: .98;
  letter-spacing: -.01em;
  color: var(--warm-50);
}

.page-contact .contact-hero__lead {
  max-width: 38em;
  margin: 0 0 1.75rem;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--warm-50);
  opacity: .84;
}

.page-contact .contact-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--ink-500);
  border: 1px solid var(--ink-500);
}

.page-contact .h-fact {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: .4rem;
  padding: .9rem 1.1rem;
  background: var(--ink-950);
}

.page-contact .h-fact__key {
  font-size: var(--fs-label);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gray-400);
}

.page-contact .h-fact__val {
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.2vw, 26px);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--warm-50);
  word-break: break-word;
}

.page-contact .h-fact__val--cyan { color: var(--cyan-400); }
.page-contact .h-fact__val--orange { color: var(--orange-500); }

.page-contact .contact-hero__media {
  margin: 0;
  border-top: 2px solid var(--ink-500);
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 3;
  object-fit: cover;
}

/* --- 章节节奏 --- */
.page-contact .section {
  margin-block: clamp(2.5rem, 6vw, 4.5rem);
}

/* --- 反馈类型选择器 --- */
.page-contact .fb-wrap { display: block; }

.page-contact .fb-bar {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0 0 1.25rem;
}

.page-contact .fb-bar .filter-btn {
  padding: 1rem .75rem;
  border: 2px solid var(--ink-500);
  border-radius: var(--radius);
  background: var(--ink-850);
  color: var(--warm-50);
  font-family: var(--font-head);
  font-size: clamp(15px, 1.6vw, 20px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: .02em;
  text-align: center;
  cursor: pointer;
  transition: background-color .18s ease, border-color .18s ease, color .18s ease, box-shadow .18s ease;
}

.page-contact .fb-bar .filter-btn:hover,
.page-contact .fb-bar .filter-btn:focus-visible {
  border-color: var(--cyan-400);
  background: linear-gradient(120deg, rgba(51, 225, 242, .3), rgba(51, 225, 242, 0) 76%), var(--ink-700);
  color: var(--cyan-200);
  box-shadow: inset 4px 0 0 var(--cyan-400);
  outline: none;
}

.page-contact .fb-scope {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-contact .fb-panel {
  min-width: 0;
  padding: 1.25rem 1.25rem 1.4rem;
  border: 2px solid var(--ink-500);
  border-radius: var(--radius);
  background: var(--ink-700);
  box-shadow: var(--shadow-hard-sm);
}

.page-contact .fb-panel[hidden] { display: none; }

.page-contact .fb-panel__tag {
  margin: 0 0 .5rem;
  font-size: var(--fs-label);
  letter-spacing: .18em;
  color: var(--cyan-400);
}

.page-contact .fb-panel__title {
  margin: 0 0 .9rem;
  font-family: var(--font-head);
  font-size: var(--fs-h3);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--warm-50);
}

.page-contact .fb-panel__list { margin: 0; }

.page-contact .fb-line {
  display: grid;
  grid-template-columns: 1fr;
  gap: .2rem;
  padding: .7rem 0;
  border-top: 1px dashed var(--ink-500);
}

.page-contact .fb-line:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-contact .fb-line dt {
  font-size: var(--fs-label);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gray-400);
}

.page-contact .fb-line dd {
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.7;
  color: var(--warm-50);
  opacity: .88;
}

.page-contact .contact-flow {
  margin: 1.75rem 0 0;
}

.page-contact .contact-flow img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 628;
  object-fit: cover;
}

/* --- 联系方式清单 --- */
.page-contact .contact-board {
  margin: 1.75rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--ink-500);
}

.page-contact .contact-entry {
  min-width: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: .45rem;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--ink-500);
}

.page-contact .contact-entry__key {
  padding-top: .35rem;
  font-size: var(--fs-label);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gray-400);
}

.page-contact .contact-entry__value {
  min-width: 0;
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.75;
  color: var(--warm-50);
  opacity: .88;
}

.page-contact .contact-entry__strong {
  display: block;
  margin-bottom: .6rem;
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.2vw, 26px);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--cyan-400);
  word-break: break-all;
}

.page-contact .contact-entry__strong--warm { color: var(--orange-500); }

.page-contact .copy-btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .45rem .85rem;
  border: 1px solid var(--ink-500);
  border-radius: var(--radius);
  background: var(--ink-850);
  color: var(--gray-400);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: .12em;
  cursor: pointer;
  transition: color .16s ease, border-color .16s ease, background-color .16s ease;
}

.page-contact .copy-btn:hover,
.page-contact .copy-btn:focus-visible {
  border-color: var(--cyan-400);
  color: var(--cyan-200);
  outline: none;
}

.page-contact .copy-btn[data-copied="true"] {
  border-color: var(--orange-500);
  background: var(--orange-500);
  color: var(--ink-950);
}

.page-contact .addr-lines {
  display: grid;
  gap: .15rem;
  padding-left: .85rem;
  border-left: 2px solid var(--cyan-400);
}

/* --- 数据纠错 --- */
.page-contact .fix-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1.75rem;
}

.page-contact .fix-card {
  min-width: 0;
  padding: 1.3rem 1.35rem 1.4rem;
  border: 2px solid var(--ink-500);
  border-radius: var(--radius);
  background: var(--ink-850);
  box-shadow: var(--shadow-hard-sm);
}

.page-contact .fix-card__idx {
  margin: 0 0 .55rem;
  font-size: var(--fs-label);
  letter-spacing: .18em;
  color: var(--orange-500);
}

.page-contact .fix-card__title {
  margin: 0 0 .9rem;
  font-family: var(--font-head);
  font-size: var(--fs-h3);
  font-weight: 700;
  color: var(--warm-50);
}

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

.page-contact .fix-card__list li {
  position: relative;
  padding-left: 1.05rem;
  font-size: var(--fs-small);
  line-height: 1.65;
  color: var(--warm-50);
  opacity: .88;
}

.page-contact .fix-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: .55rem;
  height: 1px;
  background: var(--cyan-400);
}

.page-contact .fix-flow {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--ink-500);
  border: 1px solid var(--ink-500);
}

.page-contact .fix-step {
  position: relative;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: .4rem;
  padding: 1.1rem 1.2rem;
  background: var(--ink-950);
}

.page-contact .fix-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--cyan-400), rgba(51, 225, 242, 0));
}

.page-contact .fix-step__idx {
  font-size: var(--fs-label);
  letter-spacing: .18em;
  color: var(--gray-400);
}

.page-contact .fix-step__title {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--cyan-200);
}

.page-contact .fix-step__text {
  font-size: var(--fs-small);
  line-height: 1.65;
  color: var(--warm-50);
  opacity: .85;
}

/* --- 商务与合作 --- */
.page-contact .biz-grid {
  margin-top: 1.75rem;
}

.page-contact .biz-card {
  min-width: 0;
  padding: 1.3rem 1.35rem;
  border: 2px solid var(--ink-500);
  border-radius: var(--radius);
  background: var(--ink-700);
}

.page-contact .biz-card__title {
  margin: 0 0 .9rem;
  font-family: var(--font-head);
  font-size: var(--fs-h3);
  font-weight: 700;
  color: var(--orange-200);
}

.page-contact .biz-card__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .8rem;
}

.page-contact .biz-card__list li {
  padding-left: .95rem;
  border-left: 2px solid var(--ink-500);
  font-size: var(--fs-small);
  line-height: 1.75;
  color: var(--warm-50);
  opacity: .88;
}

.page-contact .biz-card__list strong {
  font-weight: 600;
  color: var(--cyan-200);
}

.page-contact .biz-flow {
  margin-top: 1.25rem;
  padding: 1.15rem 1.3rem;
  border: 1px solid var(--ink-500);
  border-left: 4px solid var(--orange-500);
  border-radius: var(--radius);
  background: linear-gradient(100deg, rgba(255, 122, 26, .12), rgba(255, 122, 26, 0) 70%), var(--ink-850);
}

.page-contact .biz-flow__text {
  max-width: 44em;
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.8;
  color: var(--warm-50);
}

.page-contact .biz-flow__mail {
  color: var(--orange-200);
  word-break: break-all;
}

/* --- 相关入口 --- */
.page-contact .next-links {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--ink-500);
  border: 1px solid var(--ink-500);
}

.page-contact .next-link {
  min-width: 0;
  background: var(--ink-950);
}

.page-contact .next-link__a {
  display: grid;
  gap: .35rem;
  padding: 1.15rem 1.25rem;
  border-left: 3px solid transparent;
  color: inherit;
  text-decoration: none;
  transition: background-color .18s ease, border-color .18s ease;
}

.page-contact .next-link__a:hover,
.page-contact .next-link__a:focus-visible {
  background: var(--ink-850);
  border-left-color: var(--cyan-400);
  outline: none;
}

.page-contact .next-link__title {
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--cyan-200);
}

.page-contact .next-link__desc {
  font-size: var(--fs-small);
  line-height: 1.65;
  color: var(--gray-400);
}

/* --- 响应式 --- */
@media (min-width: 640px) {
  .page-contact .fb-line {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 1rem;
    align-items: start;
  }

  .page-contact .contact-entry {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 1.25rem;
    align-items: start;
  }
}

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

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

@media (min-width: 800px) {
  .page-contact .fix-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-contact .fix-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

@media (min-width: 900px) {
  .page-contact .fb-bar {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .fb-scope {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

@media (min-width: 980px) {
  .page-contact .contact-board {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: repeat(3, auto);
    grid-auto-flow: column;
    column-gap: clamp(28px, 4vw, 72px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .fb-bar .filter-btn,
  .page-contact .copy-btn,
  .page-contact .next-link__a {
    transition: none;
  }
}