.page-contact {
  --pc-hair: rgba(143, 161, 184, .26);
  --pc-hair-strong: rgba(143, 161, 184, .46);
  --pc-paper-line: rgba(11, 31, 58, .2);
}

.page-contact .mono {
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

.page-contact .eyebrow {
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 .8rem;
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .5rem;
  padding: 1.15rem 0 .35rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-contact .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  outline: none;
}

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

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: .5rem 0 clamp(2.5rem, 6vw, 4.25rem);
  background:
    radial-gradient(85% 70% at 88% 2%, rgba(0, 229, 255, .16) 0%, rgba(11, 31, 58, 0) 64%),
    linear-gradient(168deg, var(--space) 0%, var(--space) 42%, var(--space-deep) 100%);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgba(143, 161, 184, .08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(143, 161, 184, .08) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .85), transparent 78%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .85), transparent 78%);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  grid-template-columns: 1fr;
}

.page-contact .contact-hero h1 {
  margin: 0 0 1.1rem;
  font-size: clamp(2rem, 5.2vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-contact .lede {
  margin: 0 0 1.6rem;
  max-width: 54ch;
  font-size: clamp(1rem, 1.6vw, 1.08rem);
  line-height: 1.85;
  color: rgba(245, 247, 250, .82);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

.page-contact .contact-hero__quick {
  border: 1px solid var(--pc-hair);
  border-left: 2px solid var(--cyan);
  background: rgba(16, 44, 79, .62);
  padding: 1.15rem 1.2rem;
  align-self: start;
}

.page-contact .quick__label {
  margin: 0 0 .95rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-contact .quick__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .7rem;
}

.page-contact .quick__list li {
  display: grid;
  gap: .2rem;
  padding-bottom: .6rem;
  border-bottom: 1px dashed var(--pc-hair);
}

.page-contact .quick__list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .quick__list span {
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-contact .quick__list strong {
  font-weight: 500;
  font-size: .9rem;
  line-height: 1.5;
  color: var(--white);
  overflow-wrap: anywhere;
}

/* ---------- 通用区块 ---------- */
.page-contact .section {
  padding: clamp(2.75rem, 7vw, 5rem) 0;
}

.page-contact .section-head {
  max-width: 64ch;
  margin-bottom: clamp(1.75rem, 4vw, 2.6rem);
}

.page-contact .section-head h2 {
  margin: 0 0 .85rem;
  font-size: clamp(1.6rem, 3.4vw, 2.5rem);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-contact .section-head__text {
  margin: 0;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 联系信息 ---------- */
.page-contact .channels-grid {
  display: grid;
  gap: clamp(1.25rem, 3vw, 1.75rem);
  grid-template-columns: 1fr;
}

.page-contact .contact-card {
  border: 1px solid var(--pc-hair);
  border-left: 2px solid var(--cyan);
  background: linear-gradient(155deg, rgba(16, 44, 79, .92) 0%, rgba(7, 20, 39, .96) 100%);
  padding: clamp(1.1rem, 3vw, 1.9rem);
}

.page-contact .contact-card__grid {
  display: grid;
  gap: 1.6rem;
  grid-template-columns: 1fr;
}

.page-contact .contact-card__tag {
  margin: 0 0 .6rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .1em;
  color: var(--mist);
}

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

.page-contact .contact-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: .2rem .8rem;
  align-items: center;
  padding: .85rem 0;
  border-bottom: 1px dashed var(--pc-hair);
}

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

.page-contact .contact-row__key {
  grid-column: 1;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-contact .contact-row__val {
  grid-column: 1;
  font-size: .98rem;
  line-height: 1.6;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .contact-row__val--mono {
  font-family: var(--font-mono);
  letter-spacing: .02em;
  color: var(--ice);
}

.page-contact .copy-btn {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .1em;
  color: var(--mist);
  background: transparent;
  border: 1px solid var(--pc-hair);
  padding: .4rem .6rem;
  cursor: pointer;
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
}

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

.page-contact .copy-btn[data-copied="true"] {
  color: var(--space-deep);
  background: var(--ice);
  border-color: var(--ice);
}

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

.page-contact .contact-card__visual img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--pc-hair);
  background: linear-gradient(150deg, rgba(0, 229, 255, .14), rgba(255, 107, 53, .12));
}

.page-contact .contact-card__visual figcaption {
  margin-top: .55rem;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-contact .channels-notes {
  display: grid;
  gap: .9rem;
  align-content: start;
}

.page-contact .note-card {
  border: 1px solid var(--pc-hair);
  border-top: 2px solid var(--orange);
  background: rgba(16, 44, 79, .5);
  padding: 1rem 1.1rem;
}

.page-contact .note-card h3 {
  margin: 0 0 .45rem;
  font-size: .98rem;
  line-height: 1.4;
  color: var(--white);
}

.page-contact .note-card p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 反馈类型 ---------- */
.page-contact .contact-types {
  background: linear-gradient(180deg, var(--space-deep) 0%, var(--space) 32%, var(--space) 100%);
}

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

.page-contact .type-card {
  display: flex;
  flex-direction: column;
  gap: .6rem;
  border: 1px solid var(--pc-hair);
  background: rgba(16, 44, 79, .42);
  padding: 1.15rem;
  transition: border-color .2s var(--ease), background-color .2s var(--ease), transform .2s var(--ease);
}

.page-contact .type-card:hover {
  border-color: var(--cyan);
  background: rgba(16, 44, 79, .72);
  transform: translateY(-2px);
}

.page-contact .type-card__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--orange);
}

.page-contact .type-card h3 {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.35;
  color: var(--white);
}

.page-contact .type-card p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .type-card__to {
  margin-top: auto;
  padding-top: .7rem;
  border-top: 1px dashed var(--pc-hair);
  font-size: .86rem;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .type-card__to .mono {
  color: var(--ice);
  font-size: .84rem;
}

.page-contact .type-card__link {
  font-size: .84rem;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  align-self: flex-start;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-contact .type-card__link:hover,
.page-contact .type-card__link:focus-visible {
  border-bottom-color: var(--cyan);
  outline: none;
}

/* ---------- 反馈准备（纸色） ---------- */
.page-contact .contact-prepare {
  color: var(--space-deep);
}

.page-contact .contact-prepare .eyebrow {
  color: var(--midnight);
}

.page-contact .prepare-grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  grid-template-columns: 1fr;
}

.page-contact .prepare-intro h2 {
  margin: 0 0 .9rem;
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--space-deep);
}

.page-contact .prepare-intro > p {
  margin: 0 0 1.2rem;
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(11, 31, 58, .78);
  max-width: 46ch;
}

.page-contact .prepare-mail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem .9rem;
  padding: .9rem 1rem;
  border: 1px dashed var(--pc-paper-line);
  background: rgba(255, 255, 255, .55);
  margin-bottom: .9rem;
}

.page-contact .prepare-mail__label {
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .12em;
  color: var(--midnight);
}

.page-contact .prepare-mail__val {
  font-size: .92rem;
  color: var(--space-deep);
  overflow-wrap: anywhere;
}

.page-contact .copy-btn--paper {
  grid-column: auto;
  grid-row: auto;
  border-color: rgba(11, 31, 58, .35);
  color: var(--space-deep);
  margin-left: auto;
}

.page-contact .copy-btn--paper:hover,
.page-contact .copy-btn--paper:focus-visible {
  background: var(--space-deep);
  border-color: var(--space-deep);
  color: var(--paper);
}

.page-contact .prepare-note {
  margin: 0;
  font-size: .84rem;
  line-height: 1.7;
  color: rgba(11, 31, 58, .62);
}

.page-contact .prepare-card {
  background: rgba(255, 255, 255, .66);
  border: 1px solid var(--pc-paper-line);
  padding: clamp(1rem, 2.5vw, 1.5rem);
}

.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .prep-field {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: .75rem;
  padding: .85rem 0;
  border-bottom: 1px dashed var(--pc-paper-line);
}

.page-contact .prep-field:first-child {
  padding-top: 0;
}

.page-contact .prep-field:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .prep-field__no {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: rgba(11, 31, 58, .48);
  padding-top: .15rem;
}

.page-contact .prep-field__label {
  margin: 0 0 .2rem;
  font-size: .98rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--space-deep);
}

.page-contact .prep-field__hint {
  margin: 0;
  font-size: .88rem;
  line-height: 1.75;
  color: rgba(11, 31, 58, .72);
}

.page-contact .prep-check {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.1rem;
  margin: 1.1rem 0 0;
  padding: .8rem 0 0;
  border-top: 1px dashed var(--pc-paper-line);
}

.page-contact .prep-check li {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .08em;
  color: var(--midnight);
}

.page-contact .prep-check li::before {
  content: "▪ ";
  color: var(--orange);
}

/* ---------- 处理流程 ---------- */
.page-contact .flow-track {
  list-style: none;
  margin: 0 0 clamp(1.75rem, 4vw, 2.5rem);
  padding: 0;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

.page-contact .flow-step {
  position: relative;
  border-top: 1px solid var(--pc-hair);
  padding-top: 1rem;
}

.page-contact .flow-step__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  margin: -.1rem 0 .8rem;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  background: var(--space-deep);
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--cyan);
}

.page-contact .flow-step h3 {
  margin: 0 0 .5rem;
  font-size: 1.06rem;
  line-height: 1.4;
  color: var(--white);
}

.page-contact .flow-step p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .flow-figure {
  margin: 0 0 1.25rem;
  border: 1px solid var(--pc-hair);
  padding: .5rem;
  background: rgba(16, 44, 79, .35);
}

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

.page-contact .flow-figure figcaption {
  padding: .6rem .35rem .2rem;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-contact .hours-fold {
  border: 1px solid var(--pc-hair);
  border-left: 2px solid var(--orange);
  background: rgba(16, 44, 79, .45);
}

.page-contact .hours-fold summary {
  cursor: pointer;
  padding: .9rem 1rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--white);
  list-style: none;
}

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

.page-contact .hours-fold summary::after {
  content: "＋";
  float: right;
  color: var(--cyan);
}

.page-contact .hours-fold[open] summary::after {
  content: "－";
}

.page-contact .hours-fold summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-contact .hours-fold p {
  margin: 0;
  padding: 0 1rem 1rem;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 收束区 ---------- */
.page-contact .contact-close {
  padding: clamp(2.5rem, 6vw, 4rem) 0 clamp(2rem, 5vw, 3rem);
  background: linear-gradient(180deg, var(--space-deep) 0%, var(--space) 100%);
  border-top: 1px solid var(--pc-hair);
}

.page-contact .contact-close__inner {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  grid-template-columns: 1fr;
}

.page-contact .contact-close h2 {
  margin: 0 0 .8rem;
  font-size: clamp(1.5rem, 3.2vw, 2.2rem);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-contact .contact-close__text p {
  margin: 0;
  font-size: .98rem;
  line-height: 1.85;
  color: var(--mist);
  max-width: 56ch;
}

.page-contact .close-meta {
  display: grid;
  gap: .6rem;
  align-content: start;
  border: 1px solid var(--pc-hair);
  background: rgba(16, 44, 79, .45);
  padding: 1rem 1.1rem;
}

.page-contact .close-meta__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: .75rem;
  padding-bottom: .55rem;
  border-bottom: 1px dashed var(--pc-hair);
}

.page-contact .close-meta__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .close-meta__row span {
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-contact .close-meta__row strong {
  font-weight: 500;
  font-size: .88rem;
  color: var(--ice);
  text-align: right;
}

.page-contact .close-links {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem 1.5rem;
  padding-top: 1.1rem;
  border-top: 1px dashed var(--pc-hair-strong);
}

.page-contact .close-links a {
  font-size: .9rem;
  color: var(--white);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: .15rem;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-contact .close-links a:hover,
.page-contact .close-links a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  outline: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .type-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-contact .type-card {
    grid-column: span 3;
  }
}

@media (min-width: 760px) {
  .page-contact .contact-card__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .flow-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem;
  }

  .page-contact .flow-step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: -.1rem;
    left: 100%;
    width: 2rem;
    border-top: 1px dashed var(--pc-hair-strong);
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr);
    align-items: end;
  }

  .page-contact .channels-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
    align-items: start;
  }

  .page-contact .prepare-grid {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-contact .contact-close__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .6fr);
    align-items: start;
  }

  .page-contact .close-links {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1000px) {
  .page-contact .type-card:nth-child(1),
  .page-contact .type-card:nth-child(4) {
    grid-column: span 4;
  }

  .page-contact .type-card:nth-child(2),
  .page-contact .type-card:nth-child(3) {
    grid-column: span 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .type-card,
  .page-contact .copy-btn,
  .page-contact .type-card__link,
  .page-contact .close-links a,
  .page-contact .breadcrumb a {
    transition: none;
  }

  .page-contact .type-card:hover {
    transform: none;
  }
}