.page-contact {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  background: var(--refract);
  padding: clamp(1.5rem, 4vw, 2.5rem) 0 clamp(2.5rem, 7vw, 5rem);
  border-bottom: 1px solid rgba(201, 206, 214, 0.16);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--ruby) 0%, var(--amber) 42%, transparent 88%);
  opacity: 0.85;
}

.page-contact .hero-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 3.5rem);
  margin-top: clamp(2rem, 6vw, 3.5rem);
}

.page-contact .hero-lead__index {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--ruby);
  margin: 0 0 1rem;
}

.page-contact .hero-lead h1 {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  color: var(--white);
}

.page-contact .hero-lead__lede {
  margin: 1.25rem 0 0;
  max-width: 44ch;
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  line-height: 1.8;
  color: rgba(244, 241, 234, 0.78);
}

.page-contact .hero-lead__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.75rem;
  margin: 1.75rem 0 0;
}

.page-contact .hero-direct {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.page-contact .dir-card {
  position: relative;
  padding: 1.35rem 1.5rem 1.45rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(201, 206, 214, 0.26);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-contact .dir-card--mail {
  border-left: 3px solid var(--ruby);
}

.page-contact .dir-card--phone {
  border-left: 3px solid var(--amber);
}

.page-contact .dir-card__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-contact .dir-card--mail .dir-card__label {
  color: var(--ruby);
}

.page-contact .dir-card__value {
  margin: 0.5rem 0 0.6rem;
  font-family: var(--font-mono);
  font-size: clamp(1.02rem, 2.4vw, 1.3rem);
  font-weight: 600;
  color: var(--white);
  word-break: break-all;
}

.page-contact .dir-card__note {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(244, 241, 234, 0.66);
}

/* ---------- 通用区块 ---------- */
.page-contact .section {
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}

.page-contact .prep-lede,
.page-contact .coop-lede {
  max-width: 62ch;
  margin: -0.5rem 0 2.5rem;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(244, 241, 234, 0.7);
}

/* ---------- 01 联系前准备 ---------- */
.page-contact .prep-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-contact .prep-item {
  padding: 1.5rem 1.6rem 1.6rem;
  background: var(--paper);
  color: var(--ink);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
}

.page-contact .prep-item__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--ruby);
}

.page-contact .prep-item h3 {
  margin: 0.45rem 0 0.55rem;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-contact .prep-item p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--graphite);
}

.page-contact .prep-item h3 + p {
  margin-top: 0;
}

/* ---------- 02 客服通道 ---------- */
.page-contact .channels {
  background: var(--ink-2);
  border-top: 1px solid rgba(201, 206, 214, 0.12);
}

.page-contact .channel-grid {
  align-items: start;
}

.page-contact .channel-list {
  display: grid;
}

.page-contact .channel-item {
  padding: 1.35rem 0 1.45rem;
  border-top: 1px dashed rgba(201, 206, 214, 0.24);
}

.page-contact .channel-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-contact .channel-item__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-contact .channel-item__val {
  margin: 0.55rem 0 0.5rem;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.2vw, 1.18rem);
  font-weight: 600;
  color: var(--white);
  word-break: break-all;
}

.page-contact .channel-item__val a {
  color: var(--ruby-soft);
}

.page-contact .channel-item__note {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(244, 241, 234, 0.66);
}

.page-contact .channel-details {
  margin-top: 1.75rem;
  padding: 1rem 1.15rem 1.15rem;
  border: 1px solid rgba(201, 206, 214, 0.24);
  background: rgba(16, 42, 67, 0.45);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-contact .channel-details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  list-style: none;
}

.page-contact .channel-details summary::-webkit-details-marker {
  display: none;
}

.page-contact .channel-details summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--ruby);
  line-height: 1;
}

.page-contact .channel-details[open] summary::after {
  content: "–";
}

.page-contact .channel-details__list {
  margin: 1rem 0 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.5rem;
  font-size: 0.92rem;
  line-height: 1.7;
  color: rgba(244, 241, 234, 0.8);
}

.page-contact .channel-details__foot {
  margin: 1rem 0 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--graphite);
}

.page-contact .channel-visual {
  margin-top: 2rem;
}

.page-contact .channel-visual .figure {
  margin: 0;
}

/* ---------- 03 留言与反馈 ---------- */
.page-contact .feedback-grid {
  align-items: start;
}

.page-contact .field-stack {
  display: grid;
  gap: 0.75rem;
}

.page-contact .field-row {
  padding: 1.05rem 1.2rem 1.15rem;
  border: 1px solid rgba(201, 206, 214, 0.22);
  transition: border-color 0.22s ease, background-color 0.22s ease;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.page-contact .field-row:hover {
  border-color: var(--ruby);
  background: rgba(230, 59, 90, 0.07);
}

.page-contact .field-row__label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 0 0 0.4rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
}

.page-contact .field-row__req {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  padding: 0.15rem 0.5rem;
  color: var(--ruby);
  border: 1px solid currentColor;
}

.page-contact .field-row__req--optional {
  color: var(--emerald);
}

.page-contact .field-row__hint {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: rgba(244, 241, 234, 0.68);
}

.page-contact .feedback-aside {
  margin-top: 1.5rem;
  display: grid;
  gap: 1.35rem;
  align-content: start;
}

.page-contact .callout__title {
  margin: 0 0 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
}

.page-contact .feedback-aside__block {
  padding-top: 1.1rem;
  border-top: 1px solid rgba(201, 206, 214, 0.2);
}

.page-contact .feedback-aside__block h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--amber);
}

.page-contact .feedback-aside__block p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.78;
  color: rgba(244, 241, 234, 0.7);
}

/* ---------- 04 合作与内容协作 ---------- */
.page-contact .coop {
  background: var(--ink-2);
  border-top: 1px solid rgba(201, 206, 214, 0.12);
  border-bottom: 1px solid rgba(201, 206, 214, 0.12);
}

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

.page-contact .coop-card {
  position: relative;
  padding: 1.6rem 1.5rem 1.7rem;
  background: linear-gradient(155deg, rgba(16, 42, 67, 0.95) 0%, rgba(11, 15, 20, 0.95) 100%);
  border: 1px solid rgba(201, 206, 214, 0.18);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
  transition: border-color 0.22s ease;
}

.page-contact .coop-card:hover {
  border-color: var(--amber);
}

.page-contact .coop-card__tag {
  display: inline-block;
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--amber);
  border-bottom: 1px solid currentColor;
  padding-bottom: 0.2rem;
}

.page-contact .coop-card h3 {
  margin: 0 0 0.6rem;
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-contact .coop-card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.78;
  color: rgba(244, 241, 234, 0.68);
}

.page-contact .coop-note {
  margin-top: 2rem;
  padding-left: 1.15rem;
  border-left: 2px solid var(--ruby);
}

.page-contact .coop-note p {
  margin: 0;
  max-width: 68ch;
  font-size: 0.95rem;
  line-height: 1.8;
  color: rgba(244, 241, 234, 0.76);
}

.page-contact .coop-note__link {
  margin-top: 0.85rem;
}

/* ---------- 05 到访与邮寄 ---------- */
.page-contact .visit-grid {
  align-items: start;
}

.page-contact .visit-address {
  margin: 0 0 1.5rem;
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 2.8vw, 1.55rem);
  font-weight: 700;
  line-height: 1.65;
  color: var(--white);
}

.page-contact .visit-meta {
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(201, 206, 214, 0.22);
}

.page-contact .visit-meta__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.2rem;
  margin: 0;
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(201, 206, 214, 0.14);
  font-size: 0.92rem;
  line-height: 1.7;
  color: rgba(244, 241, 234, 0.78);
}

.page-contact .visit-meta__row span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--graphite);
}

.page-contact .visit-foot {
  margin: 1.35rem 0 0;
  max-width: 60ch;
  font-size: 0.9rem;
  line-height: 1.78;
  color: rgba(244, 241, 234, 0.62);
}

.page-contact .visit-visual {
  margin-top: 2rem;
}

.page-contact .visit-visual .figure {
  margin: 0;
}

/* ---------- 图片与链接微调 ---------- */
.page-contact .figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .channel-item__val a,
.page-contact .coop-note__link a {
  display: inline-block;
}

.page-contact .link-arrow {
  border-bottom-color: rgba(230, 59, 90, 0.45);
}

.page-contact .link-arrow:hover {
  border-bottom-color: var(--ruby);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-contact .visit-meta__row {
    grid-template-columns: 8.5rem 1fr;
    gap: 1.25rem;
    align-items: baseline;
  }
}

@media (min-width: 960px) {
  .page-contact .hero-split {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }

  .page-contact .hero-direct {
    margin-top: 0.5rem;
  }

  .page-contact .channel-visual,
  .page-contact .visit-visual {
    margin-top: 0;
  }

  .page-contact .feedback-aside {
    margin-top: 0;
    padding-left: 1.5rem;
    border-left: 1px solid rgba(201, 206, 214, 0.2);
  }
}

@media (min-width: 1100px) {
  .page-contact .prep-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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