.page-contact {
  --contact-tilt: -4deg;
  --contact-fill: rgba(34, 227, 211, .07);
  display: block;
  padding-bottom: clamp(56px, 8vw, 120px);
}

/* ---------- 面包屑 ---------- */
.page-contact .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: clamp(18px, 2.6vw, 34px);
  font-size: var(--fs-14);
  color: var(--mist);
}

.page-contact .crumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}

.page-contact .crumbs a:hover,
.page-contact .crumbs a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .crumbs span[aria-current="page"] {
  color: var(--white);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.4vw, 48px) 0 clamp(38px, 6vw, 84px);
}

.page-contact .contact-hero__glow {
  position: absolute;
  top: -36%;
  right: -20%;
  width: min(680px, 84vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 42% 46%, var(--warm) 0%, rgba(255, 122, 47, 0) 62%);
  transform: rotate(-9deg);
  pointer-events: none;
}

.page-contact .contact-hero__slice {
  position: absolute;
  left: -14%;
  bottom: 8%;
  width: 64%;
  height: 2px;
  background: linear-gradient(90deg, rgba(34, 227, 211, 0) 0%, var(--cyan) 55%, rgba(34, 227, 211, 0) 100%);
  transform: rotate(var(--contact-tilt));
  opacity: .5;
  pointer-events: none;
}

.page-contact .contact-hero > * {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero h1 {
  margin: 12px 0 20px;
  max-width: 18ch;
}

.page-contact .contact-hero .lede {
  max-width: 60ch;
  margin: 0;
  font-size: var(--fs-17);
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 章节导航 ---------- */
.page-contact .chapter-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line-soft);
  font-size: var(--fs-14);
}

.page-contact .chapter-nav__link {
  color: var(--mist);
  text-decoration: none;
  padding: 4px 2px;
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}

.page-contact .chapter-nav__link:hover,
.page-contact .chapter-nav__link:focus-visible,
.page-contact .chapter-nav__link[aria-current="true"],
.page-contact .chapter-nav__link.is-active {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 章节骨架 ---------- */
.page-contact .contact-block {
  padding-block: clamp(42px, 6.4vw, 88px);
}

.page-contact .contact-block + .contact-block {
  border-top: 1px solid var(--line-soft);
}

.page-contact .section__head {
  max-width: 64ch;
  margin-bottom: clamp(22px, 3.2vw, 42px);
}

.page-contact .eyebrow .mono {
  margin-right: 8px;
  color: var(--orange);
  letter-spacing: .14em;
}

.page-contact .req {
  color: var(--orange);
}

/* ---------- 表单 + 状态面板：非对称分栏 ---------- */
.page-contact .contact-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 38px);
  align-items: start;
}

.page-contact .form-panel {
  min-width: 0;
  padding: clamp(20px, 3.2vw, 42px);
  background:
    linear-gradient(155deg, var(--ink-2) 0%, rgba(23, 32, 92, .68) 58%, rgba(14, 20, 64, .92) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius) 6px var(--radius) var(--radius);
  box-shadow: inset 0 1px 0 rgba(34, 227, 211, .12);
}

.page-contact .form-panel__title {
  margin: 0 0 8px;
  font-size: var(--fs-22);
  font-weight: 800;
  color: var(--white);
  letter-spacing: .01em;
}

.page-contact .form-panel__note {
  margin: 0 0 clamp(18px, 2.4vw, 28px);
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .feedback-form {
  display: grid;
  gap: clamp(16px, 2.2vw, 24px);
}

/* 问题类型选择 */
.page-contact .type-picker {
  margin: 0;
  padding: 0;
  border: 0;
}

.page-contact .type-picker__legend {
  padding: 0;
  font-size: var(--fs-14);
  font-weight: 700;
  color: var(--white);
}

.page-contact .type-picker__options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.page-contact .type-option {
  position: relative;
  display: inline-flex;
}

.page-contact .type-option input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.page-contact .type-option__face {
  display: inline-block;
  padding: 8px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: var(--fs-14);
  color: var(--mist);
  white-space: nowrap;
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}

.page-contact .type-option input:checked + .type-option__face {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
  font-weight: 700;
}

.page-contact .type-option input:focus-visible + .type-option__face {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

/* 类型提示 */
.page-contact .type-tip {
  display: none;
  margin: 0;
  padding: 10px 14px;
  border-left: 2px solid var(--cyan);
  background: var(--contact-fill);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .feedback-form:has(#f-type-version:checked) .type-tip--version,
.page-contact .feedback-form:has(#f-type-range:checked) .type-tip--range,
.page-contact .feedback-form:has(#f-type-reading:checked) .type-tip--reading,
.page-contact .feedback-form:has(#f-type-other:checked) .type-tip--other {
  display: block;
}

/* 字段：下划线式输入 */
.page-contact .field {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.page-contact .field__label {
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--white);
}

.page-contact .field__hint {
  margin: 0;
  font-size: var(--fs-12);
  line-height: 1.65;
  color: var(--mist);
}

.page-contact .field input[type="text"],
.page-contact .field input[type="email"],
.page-contact .field input[type="tel"],
.page-contact .field select,
.page-contact .field textarea {
  box-sizing: border-box;
  width: 100%;
  max-width: 100%;
  padding: 10px 2px 9px;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line-soft);
  border-radius: 0;
  color: var(--white);
  font-family: inherit;
  font-size: var(--fs-17);
  line-height: 1.6;
  transition: border-color .22s ease, box-shadow .22s ease;
}

.page-contact .field textarea {
  min-height: 116px;
  line-height: 1.75;
  resize: vertical;
}

.page-contact .field input:focus,
.page-contact .field select:focus,
.page-contact .field textarea:focus {
  outline: none;
  border-bottom-color: var(--cyan);
  box-shadow: 0 1px 0 0 var(--cyan);
}

.page-contact .field input::placeholder,
.page-contact .field textarea::placeholder {
  color: rgba(185, 194, 218, .52);
}

.page-contact .field select option {
  background: var(--ink-2);
  color: var(--white);
}

/* 提交区 */
.page-contact .form-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-top: 6px;
}

.page-contact .submit-btn {
  padding: 13px 32px;
  background: transparent;
  border: 2px solid var(--orange);
  color: var(--orange);
  font-family: inherit;
  font-size: var(--fs-17);
  font-weight: 800;
  letter-spacing: .05em;
  cursor: pointer;
  transform: skewX(-10deg);
  transition: background .24s ease, color .24s ease, box-shadow .24s ease;
}

.page-contact .submit-btn > span {
  display: block;
  transform: skewX(10deg);
}

.page-contact .submit-btn:hover {
  box-shadow: 0 0 0 4px rgba(255, 122, 47, .16);
}

.page-contact .feedback-form:has([required]:valid):not(:has([required]:invalid)) .submit-btn {
  background: var(--orange);
  color: var(--ink-3);
}

.page-contact .form-actions__note {
  margin: 0;
  max-width: 30ch;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 状态面板 ---------- */
.page-contact .status-rail {
  min-width: 0;
  display: grid;
  gap: clamp(16px, 2.2vw, 24px);
  padding: clamp(18px, 2.6vw, 30px);
  background: rgba(5, 10, 36, .58);
  border: 1px solid var(--line-soft);
  border-radius: 6px var(--radius) var(--radius) var(--radius);
}

.page-contact .status-rail .media {
  margin: 0;
}

.page-contact .status-rail__title {
  margin: 0;
  font-size: var(--fs-22);
  font-weight: 800;
  line-height: 1.4;
  color: var(--white);
}

.page-contact .status-rail__lead {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .status-track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-contact .status-step {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding-bottom: clamp(18px, 2.2vw, 26px);
}

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

.page-contact .status-step::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 32px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--line) 0%, rgba(34, 227, 211, .06) 100%);
}

.page-contact .status-step:last-child::before {
  display: none;
}

.page-contact .status-step__dot {
  position: relative;
  z-index: 1;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 2px solid var(--cyan);
  border-radius: 50%;
  background: var(--ink-3);
  color: var(--cyan);
  font-family: var(--mono);
  font-size: var(--fs-12);
  font-weight: 600;
  letter-spacing: .04em;
}

.page-contact .status-step--now .status-step__dot {
  border-color: var(--orange);
  background: var(--orange);
  color: var(--ink-3);
  box-shadow: 0 0 0 6px rgba(255, 122, 47, .16);
}

.page-contact .status-step__name {
  margin: 5px 0 5px;
  font-size: var(--fs-17);
  font-weight: 800;
  color: var(--white);
}

.page-contact .status-step__text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .status-step__time {
  display: inline-block;
  margin-top: 8px;
  font-family: var(--mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--orange);
}

@keyframes contact-step-in {
  from { opacity: .22; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

@media (prefers-reduced-motion: no-preference) {
  .page-contact .status-step {
    animation: contact-step-in .45s ease both;
    animation-timeline: view();
    animation-range: entry 6% cover 24%;
  }
}

/* ---------- 版本更新咨询 ---------- */
.page-contact .ask-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .ask-item {
  display: grid;
  align-content: start;
  gap: 10px;
  min-width: 0;
  padding: clamp(20px, 2.6vw, 34px);
  background: var(--ink-2);
}

.page-contact .ask-item__num {
  margin: 0;
  font-family: var(--mono);
  font-size: var(--fs-12);
  letter-spacing: .16em;
  color: var(--orange);
}

.page-contact .ask-item__title {
  margin: 0;
  font-size: var(--fs-22);
  font-weight: 800;
  line-height: 1.35;
  color: var(--white);
}

.page-contact .ask-item__text {
  margin: 0;
  font-size: var(--fs-17);
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .ask-item__hint {
  margin: 4px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--cyan);
}

/* ---------- 阅读体验意见 ---------- */
.page-contact .reading-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 52px);
  align-items: center;
}

.page-contact .reading-split > div {
  min-width: 0;
}

.page-contact .reading-list {
  list-style: none;
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .reading-list li {
  position: relative;
  padding-left: 24px;
  font-size: var(--fs-17);
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .reading-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .82em;
  width: 13px;
  height: 2px;
  background: var(--cyan);
  transform: rotate(-12deg);
}

.page-contact .reading-note {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--orange);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .reading-figure {
  margin: 0;
  min-width: 0;
}

/* ---------- 联系渠道 ---------- */
.page-contact .channel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.4vw, 28px);
}

.page-contact .channel-card {
  position: relative;
  overflow: hidden;
  min-width: 0;
  padding: clamp(22px, 3vw, 36px);
  background:
    linear-gradient(165deg, rgba(168, 245, 236, .1) 0%, rgba(23, 32, 92, .82) 46%, rgba(14, 20, 64, .92) 100%);
  border: 1px solid var(--line);
  border-radius: 28px 28px 6px 28px;
}

.page-contact .channel-card:nth-child(2) {
  border-radius: 6px 28px 28px 28px;
}

.page-contact .channel-card:nth-child(3) {
  border-radius: 28px 6px 28px 28px;
}

.page-contact .channel-card::after {
  content: "";
  position: absolute;
  right: -30px;
  bottom: -30px;
  width: 100px;
  height: 100px;
  border: 1px solid var(--line);
  border-radius: 50%;
  pointer-events: none;
}

.page-contact .channel-card__label {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: var(--fs-12);
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-contact .channel-card__value {
  margin: 0 0 12px;
  font-size: clamp(1.05rem, 2.4vw, 1.35rem);
  font-weight: 800;
  line-height: 1.45;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .channel-card__note {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 收尾 ---------- */
.page-contact .contact-tail {
  margin: clamp(26px, 3.6vw, 46px) 0 0;
  padding: clamp(18px, 2.6vw, 28px);
  border-left: 3px solid var(--orange);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(255, 122, 47, .07);
  font-size: var(--fs-14);
  line-height: 1.9;
  color: var(--mist);
}

.page-contact .contact-tail a {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-color: rgba(34, 227, 211, .4);
  text-underline-offset: 3px;
  transition: text-decoration-color .2s ease, color .2s ease;
}

.page-contact .contact-tail a:hover,
.page-contact .contact-tail a:focus-visible {
  color: var(--mint);
  text-decoration-color: var(--mint);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .ask-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 920px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: clamp(28px, 3.6vw, 60px);
  }

  .page-contact .reading-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }

  .page-contact .ask-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-contact .status-rail {
    margin-top: clamp(10px, 1.6vw, 24px);
  }
}

@media (max-width: 560px) {
  .page-contact .type-option__face {
    padding: 7px 12px;
    font-size: var(--fs-12);
  }

  .page-contact .submit-btn {
    width: 100%;
    text-align: center;
  }

  .page-contact .form-actions__note {
    max-width: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .submit-btn,
  .page-contact .type-option__face,
  .page-contact .field input,
  .page-contact .field select,
  .page-contact .field textarea {
    transition: none;
  }
}