/* =========================================================
   意见反馈页 · page-contact
   作用域内变量与基础
   ========================================================= */
.page-contact {
  --pc-cut: 16px;
  --pc-tilt: -12deg;
  --pc-gap: clamp(18px, 2.6vw, 34px);
  --pc-deep-soft: rgba(243, 247, 242, .72);
  background: var(--cream);
  color: var(--ink);
  overflow-x: hidden;
}

.page-contact .container {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-contact .section {
  position: relative;
  padding-block: clamp(38px, 6vw, 78px);
}

/* 斜向动势装饰线 */
.page-contact .contact-hero::before,
.page-contact .contact-fix::before {
  content: "";
  position: absolute;
  left: -12%;
  right: -12%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 22%, var(--cyan) 50%, var(--line-strong) 78%, transparent);
  transform: rotate(var(--pc-tilt));
  pointer-events: none;
  opacity: .55;
}

.page-contact .contact-hero::before {
  top: clamp(96px, 14vw, 170px);
}

.page-contact .contact-fix::before {
  bottom: clamp(24px, 5vw, 60px);
}

/* =========================================================
   首屏
   ========================================================= */
.page-contact .contact-hero {
  padding-block: clamp(20px, 3vw, 36px) clamp(36px, 5vw, 68px);
  overflow: hidden;
}

.page-contact .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 32px);
}

.page-contact .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ink-soft);
}

.page-contact .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 8px;
  color: var(--slate);
}

.page-contact .breadcrumb-item a {
  color: var(--cyan-deep);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-contact .breadcrumb-item a:hover {
  border-bottom-color: var(--cyan-deep);
}

.page-contact .contact-hero__grid {
  gap: var(--pc-gap);
  align-items: end;
}

.page-contact .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan-deep);
  text-transform: uppercase;
}

.page-contact .contact-hero h1 {
  margin: 0 0 20px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(30px, 5vw, 54px);
  line-height: 1.14;
  letter-spacing: -.012em;
  color: var(--ink);
  max-width: 15ch;
}

.page-contact .lede {
  margin: 0 0 26px;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: 62ch;
}

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

.page-contact .contact-hero__quick .btn {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-inline: 20px;
}

.page-contact .contact-hero__foot {
  margin: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--ink-soft);
  padding-left: 12px;
  border-left: 3px solid var(--amber);
}

.page-contact .contact-hero__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-strong);
  clip-path: polygon(var(--pc-cut) 0, 100% 0, 100% calc(100% - var(--pc-cut)), calc(100% - var(--pc-cut)) 100%, 0 100%, 0 var(--pc-cut));
  overflow: hidden;
  background: var(--turf);
}

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

.page-contact .media-frame__label {
  display: block;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--on-dark);
  background: var(--night);
}

/* =========================================================
   章节标题组
   ========================================================= */
.page-contact .contact-head {
  max-width: 760px;
  margin-bottom: clamp(24px, 3.4vw, 44px);
}

.page-contact .chapter-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 46px;
  height: 28px;
  margin-bottom: 16px;
  padding-inline: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--on-dark);
  background: var(--wine);
  clip-path: polygon(9px 0, 100% 0, 100% 100%, 0 100%, 0 9px);
}

.page-contact .chapter-title {
  margin: 0 0 14px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(22px, 3.1vw, 34px);
  line-height: 1.24;
  letter-spacing: -.008em;
  color: var(--ink);
}

.page-contact .contact-head__body {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--ink-soft);
  max-width: 66ch;
}

.page-contact .contact-head--on-dark .chapter-title {
  color: var(--on-dark);
}

.page-contact .contact-head--on-dark .contact-head__body {
  color: var(--on-dark-soft);
}

/* =========================================================
   01 诉求分流
   ========================================================= */
.page-contact .contact-routing {
  background: var(--cream);
}

.page-contact .contact-tablist {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 0;
  border: 0;
}

.page-contact .contact-tab {
  position: relative;
  display: block;
  width: 100%;
  text-align: left;
  padding: 18px 18px 20px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--ink);
  font: inherit;
  cursor: pointer;
  clip-path: polygon(var(--pc-cut) 0, 100% 0, 100% calc(100% - var(--pc-cut)), calc(100% - var(--pc-cut)) 100%, 0 100%, 0 var(--pc-cut));
  transition: border-color .24s var(--ease), transform .24s var(--ease), box-shadow .24s var(--ease);
}

.page-contact .contact-tab::before {
  content: "";
  display: block;
  width: 40px;
  height: 4px;
  margin-bottom: 16px;
  background: var(--cyan);
}

.page-contact .contact-tab[data-tab="ticket"]::before { background: var(--wine); }
.page-contact .contact-tab[data-tab="fix"]::before { background: var(--cyan-deep); }
.page-contact .contact-tab[data-tab="coop"]::before { background: var(--indigo); }

.page-contact .contact-tab:hover {
  transform: translateY(-2px);
  border-color: var(--cyan-deep);
}

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

.page-contact .contact-tab[aria-selected="true"] {
  border-color: var(--orange);
  box-shadow: inset 0 0 0 1px var(--orange), 0 22px 42px -34px rgba(5, 19, 12, .85);
  transform: translateY(-3px);
}

.page-contact .contact-tab__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.page-contact .contact-tab__name {
  display: block;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-contact .contact-tab__hint {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
}

.page-contact .contact-panels {
  margin-top: 16px;
}

.page-contact .contact-panel {
  padding: clamp(20px, 3vw, 32px);
  background: #fff;
  border: 1px solid var(--line-strong);
  border-left: 4px solid var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--pc-cut)), calc(100% - var(--pc-cut)) 100%, 0 100%);
}

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

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

.page-contact .contact-panel__title {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .panel-meta {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--cyan-deep);
}

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

.page-contact .contact-need li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink);
}

.page-contact .contact-need li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 10px;
  height: 10px;
  background: var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
}

.page-contact .contact-panel__note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line-strong);
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-contact .contact-panel__note a {
  color: var(--cyan-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-deep);
}

/* =========================================================
   02 联系方式（深色）
   ========================================================= */
.page-contact .contact-channel {
  background: var(--turf);
}

.page-contact .contact-channel__grid {
  gap: var(--pc-gap);
  align-items: start;
}

.page-contact .contact-channel__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid rgba(20, 216, 198, .34);
  background: rgba(5, 19, 12, .42);
  clip-path: polygon(var(--pc-cut) 0, 100% 0, 100% calc(100% - var(--pc-cut)), calc(100% - var(--pc-cut)) 100%, 0 100%, 0 var(--pc-cut));
}

.page-contact .contact-channel__item {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "key key"
    "val copy";
  gap: 8px 12px;
  align-items: center;
  padding: 20px clamp(16px, 2.4vw, 26px);
  border-bottom: 1px solid rgba(20, 216, 198, .2);
}

.page-contact .contact-channel__item--last {
  border-bottom: 0;
}

.page-contact .contact-channel__key {
  grid-area: key;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--slate);
}

.page-contact .contact-channel__val {
  grid-area: val;
  font-family: var(--font-mono);
  font-size: clamp(16px, 2.2vw, 22px);
  line-height: 1.4;
  color: var(--on-dark);
  overflow-wrap: anywhere;
}

.page-contact .contact-channel__val--text {
  font-family: var(--font-sans);
  font-size: clamp(15px, 1.7vw, 18px);
}

.page-contact .contact-copy {
  grid-area: copy;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
  background: transparent;
  border: 1px solid var(--cyan);
  border-radius: 0;
  clip-path: polygon(6px 0, 100% 0, 100% 100%, 0 100%, 0 6px);
  cursor: pointer;
  transition: color .2s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .contact-copy:hover {
  background: rgba(20, 216, 198, .14);
}

.page-contact .contact-copy[data-copied] {
  color: var(--orange);
  border-color: var(--orange);
  background: rgba(255, 106, 19, .12);
}

.page-contact .contact-channel__aside {
  padding: clamp(20px, 2.6vw, 28px);
  border-top: 3px solid var(--orange);
  background: rgba(20, 216, 198, .07);
}

.page-contact .contact-channel__aside-title {
  margin: 0 0 14px;
  font-size: 17px;
  font-weight: 700;
  color: var(--on-dark);
}

.page-contact .contact-channel__aside p {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--on-dark-soft);
}

.page-contact .contact-channel__tag {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
  margin-bottom: 0;
}

.page-contact .tag {
  display: inline-block;
  padding: 5px 11px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  border-radius: 0;
}

.page-contact .tag--orange {
  color: var(--night);
  background: var(--orange);
}

.page-contact .tag--cyan {
  color: var(--cyan);
  border: 1px solid rgba(20, 216, 198, .55);
}

/* =========================================================
   03 纠错材料
   ========================================================= */
.page-contact .contact-fix {
  background: var(--cream);
  overflow: hidden;
}

.page-contact .contact-fix__grid {
  gap: var(--pc-gap);
  align-items: start;
}

.page-contact .contact-fix__figure {
  margin: 0;
}

.page-contact .contact-fix__figure .media-frame {
  border: 1px solid var(--line-strong);
  clip-path: polygon(0 0, calc(100% - var(--pc-cut)) 0, 100% var(--pc-cut), 100% 100%, 0 100%);
  overflow: hidden;
  background: var(--indigo);
}

.page-contact .contact-fix__steps {
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  counter-reset: pc-step;
  border-left: 2px solid var(--line-strong);
}

.page-contact .contact-fix__step {
  position: relative;
  counter-increment: pc-step;
  padding: 0 0 24px clamp(22px, 3vw, 34px);
}

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

.page-contact .contact-fix__step::before {
  content: "0" counter(pc-step);
  position: absolute;
  left: -1px;
  top: 2px;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 22px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--on-dark);
  background: var(--wine);
  clip-path: polygon(6px 0, 100% 0, 100% 100%, 0 100%, 0 6px);
}

.page-contact .contact-fix__step h3 {
  margin: 0 0 6px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .contact-fix__step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-contact .contact-fix__foot {
  margin: 0;
  padding: 16px 18px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink);
  background: rgba(20, 216, 198, .1);
  border-left: 4px solid var(--cyan);
}

/* =========================================================
   04 内容整理（靛紫）
   ========================================================= */
.page-contact .contact-compose {
  background: var(--indigo);
}

.page-contact .contact-compose__grid {
  gap: clamp(20px, 2.6vw, 32px) var(--pc-gap);
}

.page-contact .contact-compose__field {
  display: flex;
  flex-direction: column;
}

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

.page-contact .contact-field__input {
  width: 100%;
  padding: 10px 2px;
  font-family: var(--font-sans);
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--on-dark);
  background: transparent;
  border: 0;
  border-bottom: 1px solid rgba(20, 216, 198, .42);
  border-radius: 0;
  transition: border-color .22s var(--ease), box-shadow .22s var(--ease);
}

.page-contact .contact-field__input::placeholder {
  color: rgba(185, 203, 191, .68);
}

.page-contact .contact-field__input:focus {
  outline: none;
  border-bottom-color: var(--cyan);
  box-shadow: 0 1px 0 0 var(--cyan);
}

.page-contact .contact-field__input:focus-visible {
  outline: none;
}

.page-contact .contact-field__select {
  appearance: none;
  cursor: pointer;
}

.page-contact .contact-field__select option {
  color: var(--ink);
  background: var(--cream);
}

.page-contact .contact-field__textarea {
  resize: vertical;
  min-height: 108px;
}

.page-contact .contact-field__hint {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.68;
  color: var(--on-dark-soft);
}

.page-contact .contact-compose__send {
  margin: clamp(26px, 3.4vw, 40px) 0 0;
  padding: 18px clamp(16px, 2.4vw, 24px);
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--on-dark);
  background: rgba(5, 19, 12, .5);
  border-left: 4px solid var(--orange);
}

.page-contact .contact-compose__mail {
  font-family: var(--font-mono);
  color: var(--cyan);
  overflow-wrap: anywhere;
}

/* =========================================================
   05 回复流程
   ========================================================= */
.page-contact .contact-flow-section {
  background: var(--cream);
}

.page-contact .contact-flow {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: pc-flow;
  display: grid;
  gap: 18px;
}

.page-contact .contact-flow__item {
  position: relative;
  counter-increment: pc-flow;
  padding: 20px clamp(16px, 2.4vw, 26px) 20px clamp(52px, 6vw, 66px);
  background: #fff;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--pc-cut)) 0, 100% var(--pc-cut), 100% 100%, 0 100%);
  transition: border-color .24s var(--ease), transform .24s var(--ease);
}

.page-contact .contact-flow__item:hover {
  border-color: var(--cyan-deep);
  transform: translateX(4px);
}

.page-contact .contact-flow__dot {
  position: absolute;
  left: clamp(16px, 2.4vw, 26px);
  top: 20px;
  width: 20px;
  height: 20px;
  background: var(--cyan);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-contact .contact-flow__dot::after {
  content: counter(pc-flow);
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--night);
}

.page-contact .contact-flow__item h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .contact-flow__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-soft);
}

/* 相关页面 */
.page-contact .contact-related {
  margin-top: clamp(30px, 4vw, 52px);
  padding-top: clamp(22px, 3vw, 32px);
  border-top: 1px solid var(--line-strong);
}

.page-contact .contact-related__title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--indigo);
}

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

.page-contact .contact-related__list a {
  display: inline-block;
  font-size: 15px;
  line-height: 1.7;
  color: var(--cyan-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

.page-contact .contact-related__list a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* =========================================================
   栅格与响应式
   ========================================================= */
@media (min-width: 700px) {
  .page-contact .contact-hero__foot {
    max-width: 54ch;
  }

  .page-contact .contact-channel__item {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "key copy"
      "val val";
  }
}

@media (min-width: 760px) {
  .page-contact .contact-tablist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 900px) {
  .page-contact .grid-12 {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-contact .col-5 { grid-column: span 5; }
  .page-contact .col-6 { grid-column: span 6; }
  .page-contact .col-7 { grid-column: span 7; }

  .page-contact .contact-hero__visual {
    padding-top: clamp(18px, 4vw, 58px);
  }

  .page-contact .contact-channel__list {
    position: relative;
    top: -6px;
  }
}

@media (min-width: 1080px) {
  .page-contact .contact-tablist {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .contact-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .contact-hero h1 {
    font-size: clamp(38px, 4.2vw, 54px);
  }
}

@media (max-width: 899px) {
  .page-contact .grid-12 {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 520px) {
  .page-contact .contact-channel__item {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "key"
      "val"
      "copy";
  }

  .page-contact .contact-copy {
    justify-self: start;
  }

  .page-contact .contact-flow__item {
    padding-left: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-tab,
  .page-contact .contact-copy,
  .page-contact .contact-flow__item,
  .page-contact .contact-related__list a,
  .page-contact .contact-field__input {
    transition: none;
  }

  .page-contact .contact-tab:hover,
  .page-contact .contact-flow__item:hover {
    transform: none;
  }
}