.page-contact {
  --contact-cut: 44px;
  background: var(--ink-900);
  color: var(--paper);
}

.page-contact .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--coral);
}

.page-contact .section-title {
  margin: 10px 0 0;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(22px, 3.6vw, 34px);
  line-height: 1.36;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.4;
  text-decoration: none;
  border-radius: 2px;
  transition: background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.page-contact .btn--accent {
  color: var(--ink-900);
  background: var(--coral);
  border: 1px solid var(--coral);
}

.page-contact .btn--accent:hover {
  color: var(--coral);
  background: transparent;
}

.page-contact .btn--ghost {
  color: var(--cyan);
  background: transparent;
  border: 1px solid rgba(53, 224, 255, .45);
}

.page-contact .btn--ghost:hover {
  background: rgba(53, 224, 255, .12);
  border-color: var(--cyan);
}

.page-contact a:focus-visible,
.page-contact input:focus-visible,
.page-contact textarea:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 首屏分屏 ---------- */

.page-contact .contact-stage {
  position: relative;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(90% 60% at 88% 0%, rgba(255, 122, 89, .12), transparent 62%),
    linear-gradient(180deg, var(--ink-900), var(--ink-800));
}

.page-contact .contact-stage__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  padding-block: 26px 56px;
}

.page-contact .contact-stage__left {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: clamp(22px, 4vw, 46px);
  background: var(--ink-800);
  border-radius: 2px;
}

.page-contact .contact-stage__visual {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-contact .contact-stage__visual img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  opacity: .42;
}

.page-contact .contact-stage__left::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(53, 224, 255, .09) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(53, 224, 255, .09) 1px, transparent 1px),
    linear-gradient(165deg, rgba(7, 18, 37, .92), rgba(10, 27, 51, .58) 55%, rgba(7, 18, 37, .95)),
    radial-gradient(80% 70% at 6% 2%, rgba(255, 122, 89, .2), transparent 62%);
  background-size: 46px 46px, 46px 46px, auto, auto;
}

.page-contact .contact-stage__body {
  position: relative;
  z-index: 2;
}

.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--warm);
}

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

.page-contact .breadcrumbs__link:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .breadcrumbs__current {
  color: var(--mist);
}

.page-contact .display-title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.2vw, 56px);
  line-height: 1.14;
  letter-spacing: -.015em;
  color: var(--paper);
}

.page-contact .lede {
  max-width: 46ch;
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.82;
  color: rgba(233, 242, 247, .82);
}

.page-contact .contact-lines {
  display: grid;
  gap: 20px;
  margin-top: 34px;
  padding-top: 28px;
  border-top: 1px solid var(--line-cyan);
}

.page-contact .contact-line {
  display: grid;
  gap: 6px;
  padding-left: 16px;
  border-left: 2px solid rgba(53, 224, 255, .5);
}

.page-contact .contact-line--accent {
  border-left-color: var(--coral);
}

.page-contact .contact-line__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--warm);
}

.page-contact .contact-line__value {
  font-family: var(--font-mono);
  font-size: clamp(19px, 3.8vw, 29px);
  font-weight: 500;
  line-height: 1.32;
  letter-spacing: -.01em;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .contact-line__value--mail {
  -webkit-user-select: all;
  user-select: all;
}

.page-contact .contact-line--addr .contact-line__value {
  font-size: clamp(14px, 2.4vw, 17px);
  line-height: 1.6;
}

.page-contact .contact-line__note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--warm);
}

/* ---------- 切角留言面板 ---------- */

.page-contact .contact-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: clamp(22px, 3.2vw, 34px);
  background: linear-gradient(160deg, var(--ink-700), var(--ink-800));
  box-shadow: var(--shadow-card);
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 92px;
  height: 3px;
  background: var(--cyan);
}

.page-contact .contact-card__title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .contact-card__sub {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(233, 242, 247, .68);
}

.page-contact .contact-card__choices {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 4px;
}

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

.page-contact .choice__input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
}

.page-contact .choice__label {
  display: inline-block;
  padding: 7px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(233, 242, 247, .72);
  border: 1px solid var(--line);
  border-radius: 2px;
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-contact .choice__label:hover {
  color: var(--paper);
  border-color: rgba(53, 224, 255, .5);
}

.page-contact .choice__input:checked + .choice__label {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(53, 224, 255, .1);
}

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

.page-contact .field {
  display: grid;
  gap: 7px;
}

.page-contact .field__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--warm);
}

.page-contact .field input,
.page-contact .field textarea {
  width: 100%;
  box-sizing: border-box;
  padding: 11px 13px;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  color: var(--paper);
  background: rgba(7, 18, 37, .58);
  border: 1px solid var(--line);
  border-radius: 2px;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-contact .field input::placeholder,
.page-contact .field textarea::placeholder {
  color: rgba(183, 176, 165, .58);
}

.page-contact .field input:focus,
.page-contact .field textarea:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 1px var(--cyan), 0 0 18px -6px rgba(53, 224, 255, .7);
}

.page-contact .field textarea {
  min-height: 96px;
  resize: vertical;
}

.page-contact .contact-card__tip {
  margin: 2px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--warm);
}

.page-contact .contact-card__mail {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
  word-break: break-all;
}

/* ---------- 服务时间 ---------- */

.page-contact .contact-rhythm {
  padding-block: clamp(52px, 8vw, 100px);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-rhythm__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-contact .contact-rhythm__lede {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(233, 242, 247, .8);
}

.page-contact .rhythm-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

.page-contact .rhythm-list li {
  display: grid;
  gap: 5px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.page-contact .rhythm-list li:first-child {
  border-top-color: var(--line-cyan);
}

.page-contact .rhythm-list__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .rhythm-list__v {
  font-size: 15px;
  line-height: 1.75;
  color: rgba(233, 242, 247, .84);
}

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

.page-contact .contact-rhythm__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: clamp(230px, 46vw, 400px);
  object-fit: cover;
  border-radius: 2px;
  border: 1px solid var(--line-cyan);
}

.page-contact .contact-rhythm__caption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: .08em;
  color: var(--warm);
}

/* ---------- 会员记录 ---------- */

.page-contact .contact-member {
  padding-block: clamp(50px, 8vw, 88px);
}

.page-contact .contact-member__panel {
  display: grid;
  gap: 16px;
  padding: clamp(24px, 4vw, 42px);
  background: linear-gradient(135deg, rgba(16, 42, 76, .94), rgba(10, 27, 51, .88));
  border-left: 3px solid var(--coral);
}

.page-contact .contact-member__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(233, 242, 247, .82);
}

.page-contact .contact-member__hint {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--slate);
  font-size: 14px;
  line-height: 1.8;
  color: var(--warm);
}

.page-contact .contact-member__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

/* ---------- 主题折叠 ---------- */

.page-contact .contact-topics {
  padding-block: clamp(48px, 7vw, 84px);
  border-top: 1px solid var(--line);
}

.page-contact .topic-stack {
  display: grid;
  gap: 10px;
  margin-top: 28px;
}

.page-contact .topic-item {
  background: var(--ink-800);
  border: 1px solid var(--line);
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-contact .topic-item:hover {
  border-color: rgba(53, 224, 255, .45);
}

.page-contact .topic-item[open] {
  background: var(--ink-700);
  border-color: var(--line-cyan);
}

.page-contact .topic-item__summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 18px;
  list-style: none;
  cursor: pointer;
}

.page-contact .topic-item__summary::-webkit-details-marker {
  display: none;
}

.page-contact .topic-item__summary::after {
  content: "+";
  flex: none;
  margin-left: 4px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
}

.page-contact .topic-item[open] .topic-item__summary::after {
  content: "−";
}

.page-contact .topic-item__idx {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-contact .topic-item__title {
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .topic-item__meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--warm);
  white-space: nowrap;
}

.page-contact .topic-item__body {
  padding: 0 18px 20px 60px;
}

.page-contact .topic-item__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(233, 242, 247, .78);
}

.page-contact .topic-item__body a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 准备清单 ---------- */

.page-contact .contact-checklist {
  padding-block: clamp(50px, 8vw, 92px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(16, 42, 76, .32), transparent 72%);
}

.page-contact .checklist {
  list-style: none;
  counter-reset: ckl;
  margin: 26px 0 0;
  padding: 0;
}

.page-contact .checklist li {
  counter-increment: ckl;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 12px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.page-contact .checklist li:first-child {
  border-top-color: var(--line-cyan);
}

.page-contact .checklist li::before {
  content: counter(ckl, decimal-leading-zero);
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--coral);
}

.page-contact .checklist__title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .checklist__text {
  margin: 5px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(233, 242, 247, .78);
}

/* ---------- 安全提示 ---------- */

.page-contact .contact-privacy {
  padding-block: 0 clamp(56px, 9vw, 104px);
}

.page-contact .contact-privacy__panel {
  display: grid;
  gap: 16px;
  padding: clamp(26px, 4vw, 46px);
  background:
    linear-gradient(128deg, rgba(53, 224, 255, .14), rgba(255, 122, 89, .12) 58%, rgba(16, 42, 76, .96) 100%);
  clip-path: polygon(0 0, calc(100% - 38px) 0, 100% 38px, 100% 100%, 0 100%);
}

.page-contact .contact-privacy__text {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(233, 242, 247, .84);
}

.page-contact .contact-privacy__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-contact .rhythm-list li {
    grid-template-columns: 108px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }

  .page-contact .checklist {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }

  .page-contact .checklist li:nth-child(2) {
    border-top-color: var(--line-cyan);
  }
}

@media (min-width: 960px) {
  .page-contact .contact-stage__inner {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 1fr);
    align-items: stretch;
    gap: 36px;
    padding-block: 36px 72px;
  }

  .page-contact .contact-card {
    height: 100%;
    box-sizing: border-box;
    clip-path: polygon(0 0, calc(100% - var(--contact-cut)) 0, 100% var(--contact-cut), 100% 100%, 0 100%);
  }

  .page-contact .contact-rhythm__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    align-items: center;
    gap: 56px;
  }

  .page-contact .contact-member__panel {
    max-width: 780px;
    margin-inline-start: clamp(0px, 7vw, 120px);
  }
}
</