.page-contact {
  --c-grid-line: rgba(11, 95, 255, .13);
  --c-grid-warm: rgba(42, 33, 24, .10);
  display: block;
  background: var(--mist);
  color: var(--ink);
  overflow-x: clip;
}

.page-contact .c-band {
  padding: clamp(44px, 7vw, 88px) 0;
}

.page-contact .c-band--hero {
  padding-top: clamp(24px, 4vw, 46px);
  padding-bottom: clamp(32px, 5vw, 64px);
}

.page-contact .c-band--tight {
  padding-top: clamp(28px, 4vw, 52px);
}

.page-contact .c-band--tail {
  padding-bottom: clamp(48px, 7vw, 92px);
}

.page-contact .c-band--ink {
  background: var(--ink);
  color: #fff;
}

/* ---------- 首屏 ---------- */

.page-contact .c-hero__grid {
  display: grid;
  gap: 30px;
}

.page-contact .c-hero__lead {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}

.page-contact .c-hero__lead h1 {
  margin: 0;
  font-size: clamp(30px, 6.4vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.page-contact .c-hero__text {
  margin: 0;
  max-width: 40em;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.85;
  color: var(--graphite);
}

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

.page-contact .c-hero__actions .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  border-radius: var(--pill);
  border: 1px solid transparent;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
}

.page-contact .c-hero__actions .btn:not(.btn--ghost) {
  background: var(--blue);
  color: #fff;
}

.page-contact .c-hero__actions .btn--ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.page-contact .c-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--graphite);
}

.page-contact .c-hero__meta .mono {
  color: var(--blue-deep);
  font-weight: 600;
}

.page-contact .c-hero__visual {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--blue-pale);
  box-shadow: var(--shadow-card);
}

.page-contact .c-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 章节标题 ---------- */

.page-contact .c-sec-head {
  max-width: 62ch;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-contact .c-sec-head h2 {
  margin: 8px 0 0;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.32;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-contact .c-sec-head__sub {
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-contact .c-sec-head--light h2 {
  color: #fff;
}

.page-contact .c-sec-head--light .index-label {
  color: var(--orange);
}

/* ---------- 三联联络卡 ---------- */

.page-contact .c-cards {
  display: grid;
  gap: 14px;
}

.page-contact .c-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 22px 22px;
  border-radius: var(--r-md);
  border: 1px solid transparent;
  min-width: 0;
  transition: transform .18s var(--ease);
}

.page-contact .c-card:hover {
  transform: translateY(-2px);
}

.page-contact .c-card--mail {
  background:
    linear-gradient(90deg, var(--c-grid-line) 1px, transparent 1px) 0 0 / 26px 26px,
    linear-gradient(180deg, var(--c-grid-line) 1px, transparent 1px) 0 0 / 26px 26px,
    var(--blue-pale);
  border-color: rgba(11, 95, 255, .22);
}

.page-contact .c-card--phone {
  background: var(--ink);
  border-color: rgba(255, 255, 255, .1);
  color: #fff;
}

.page-contact .c-card--phone .index-label {
  color: var(--orange);
}

.page-contact .c-card--phone .c-card__for {
  color: rgba(255, 255, 255, .76);
}

.page-contact .c-card--addr {
  background:
    linear-gradient(90deg, var(--c-grid-warm) 1px, transparent 1px) 0 0 / 26px 26px,
    linear-gradient(180deg, var(--c-grid-warm) 1px, transparent 1px) 0 0 / 26px 26px,
    var(--paper);
  border-color: rgba(42, 33, 24, .22);
  color: var(--brown);
}

.page-contact .c-card--addr .index-label {
  color: var(--brown);
}

.page-contact .c-card--addr .c-card__for {
  color: rgba(42, 33, 24, .74);
}

.page-contact .c-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(16px, 2.1vw, 20px);
  font-weight: 500;
  letter-spacing: .01em;
  word-break: break-all;
  line-height: 1.4;
}

.page-contact .c-card--phone .c-card__value {
  color: var(--orange);
}

.page-contact .c-card__addr {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.6;
}

.page-contact .c-card__for {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--graphite);
}

/* ---------- 复制按钮 ---------- */

.page-contact .copy-btn {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding: 8px 16px;
  border-radius: var(--pill);
  border: 1px solid rgba(11, 95, 255, .28);
  background: #fff;
  color: var(--blue-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  cursor: pointer;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.page-contact .copy-btn:hover {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}

.page-contact .c-card--phone .copy-btn {
  background: rgba(255, 255, 255, .08);
  border-color: rgba(255, 255, 255, .3);
  color: #fff;
}

.page-contact .c-card--phone .copy-btn:hover {
  background: var(--orange);
  border-color: var(--orange);
  color: #221200;
}

.page-contact .copy-btn__flag {
  display: none;
  padding: 2px 8px;
  border-radius: var(--pill);
  background: var(--green);
  color: #fff;
  font-size: 11px;
  letter-spacing: 0;
}

.page-contact .copy-btn[data-copied] .copy-btn__flag {
  display: inline-block;
}

/* ---------- 反馈准备 ---------- */

.page-contact .c-prep__grid {
  display: grid;
  gap: 30px;
}

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

.page-contact .c-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 20px 20px 18px;
  border-radius: var(--r-md);
  background: #fff;
  border: 1px solid var(--line);
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
}

.page-contact .c-step:hover {
  border-color: rgba(11, 95, 255, .4);
  box-shadow: var(--shadow-card);
}

.page-contact .c-step__num {
  font-size: 15px;
  font-weight: 600;
  color: var(--blue);
  line-height: 1.6;
}

.page-contact .c-step__body {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
}

.page-contact .c-step__body h3 {
  margin: 0;
  font-size: 18px;
  line-height: 1.45;
  font-weight: 700;
}

.page-contact .c-step__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--graphite);
}

.page-contact .c-sample {
  padding: 10px 14px;
  border-radius: var(--r-sm);
  background: var(--orange-pale);
  border-left: 3px solid var(--orange);
  color: var(--brown) !important;
  font-size: 14px !important;
}

.page-contact .c-step .copy-btn {
  margin-top: 2px;
}

.page-contact .c-prep__figure {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--blue-pale);
}

.page-contact .c-prep__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .c-prep__figure figcaption {
  padding: 14px 18px 16px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--graphite);
  background: #fff;
}

/* ---------- 回复节奏 ---------- */

.page-contact .c-timing__grid {
  display: grid;
  gap: 1px;
  background: rgba(255, 255, 255, .14);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-contact .c-timing__item {
  padding: 24px 22px;
  background: var(--ink);
  min-width: 0;
}

.page-contact .c-timing__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.6vw, 32px);
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--orange);
  line-height: 1.2;
}

.page-contact .c-timing__cap {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.82;
  color: rgba(255, 255, 255, .76);
}

.page-contact .c-timing__foot {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .7);
}

.page-contact .c-timing__foot a {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 供稿与合作 ---------- */

.page-contact .c-contrib__grid {
  display: grid;
  gap: 12px;
}

.page-contact .c-contrib__item {
  padding: 20px;
  border-radius: var(--r-md);
  background: #fff;
  border: 1px solid var(--line);
  border-top: 3px solid var(--blue);
  min-width: 0;
}

.page-contact .c-contrib__item h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
}

.page-contact .c-contrib__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--graphite);
}

.page-contact .c-contrib__note {
  margin-top: 20px;
  padding: 24px 22px;
  border-radius: var(--r-md);
}

.page-contact .c-contrib__note h3 {
  margin: 0 0 12px;
  font-size: 17px;
  font-weight: 700;
  color: var(--brown);
}

.page-contact .c-contrib__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .c-contrib__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(42, 33, 24, .82);
}

.page-contact .c-contrib__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .72em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
}

.page-contact .c-contrib__cta {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--brown);
}

.page-contact .c-contrib__cta .mono {
  font-family: var(--font-mono);
  word-break: break-all;
}

/* ---------- 到访与邮寄 ---------- */

.page-contact .c-visit__grid {
  display: grid;
  gap: 14px;
}

.page-contact .c-visit__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 22px;
  border-radius: var(--r-md);
  background:
    linear-gradient(90deg, var(--c-grid-line) 1px, transparent 1px) 0 0 / 30px 30px,
    linear-gradient(180deg, var(--c-grid-line) 1px, transparent 1px) 0 0 / 30px 30px,
    var(--blue-pale);
  border: 1px solid rgba(11, 95, 255, .2);
}

.page-contact .c-visit__addr {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
}

.page-contact .c-visit__hint {
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.78;
  color: var(--graphite);
}

.page-contact .c-visit__details {
  border-radius: var(--r-md);
  background: #fff;
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-contact .c-visit__details summary {
  padding: 20px 22px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 52px;
}

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

.page-contact .c-visit__details summary::after {
  content: "+";
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--blue);
  transition: transform .18s var(--ease);
}

.page-contact .c-visit__details[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

.page-contact .c-visit__details-body {
  padding: 0 22px 22px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.page-contact .c-visit__details-body p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-contact .c-visit__details-body p:last-child {
  margin-bottom: 0;
}

/* ---------- 尾段链接 ---------- */

.page-contact .c-links {
  display: grid;
  gap: 12px;
}

.page-contact .c-link-card {
  display: block;
  padding: 20px;
  border-radius: var(--r-md);
  background: #fff;
  border: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
  transition: transform .18s var(--ease), border-color .18s var(--ease), box-shadow .18s var(--ease);
}

.page-contact .c-link-card:hover {
  transform: translateY(-2px);
  border-color: rgba(11, 95, 255, .4);
  box-shadow: var(--shadow-card);
}

.page-contact .c-link-card h3 {
  margin: 8px 0 6px;
  font-size: 17px;
  line-height: 1.45;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .c-link-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--graphite);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-contact .c-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .c-card--addr {
    grid-column: span 2;
  }

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

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

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

  .page-contact .c-visit__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-contact .c-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
    gap: 56px;
  }

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

  .page-contact .c-card--addr {
    grid-column: auto;
  }

  .page-contact .c-prep__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
    gap: 48px;
  }

  .page-contact .c-prep__figure {
    position: sticky;
    top: 24px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-contact .c-card,
  .page-contact .c-step,
  .page-contact .c-link-card,
  .page-contact .c-visit__details summary::after {
    transition: none;
  }

  .page-contact .c-card:hover,
  .page-contact .c-link-card:hover {
    transform: none;
  }
}