.page-contact {
  --contact-narrow: 680px;
  --contact-bleed: 1120px;
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-contact .contact-shell {
  max-width: var(--contact-narrow);
  margin-inline: auto;
}

.page-contact .contact-shell--wide {
  max-width: 940px;
}

.page-contact .contact-bleed {
  max-width: var(--contact-bleed);
  margin-inline: auto;
}

.page-contact h1 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 5.2vw, 2.95rem);
  line-height: 1.14;
  letter-spacing: .01em;
  color: var(--c-white);
  margin: .3em 0 .55em;
}

.page-contact h2 {
  font-family: var(--font-display);
  font-size: clamp(1.28rem, 3.2vw, 1.76rem);
  line-height: 1.28;
  letter-spacing: .01em;
  color: var(--c-white);
  margin: 0 0 .55em;
}

.page-contact .contact-hero {
  padding-top: clamp(14px, 2.6vw, 26px);
}

.page-contact .contact-lead {
  max-width: 62ch;
  margin: 0;
  font-size: clamp(1rem, 2.2vw, 1.06rem);
  line-height: 1.9;
  color: var(--c-muted);
}

.page-contact .contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-contact .contact-hero .contact-bleed {
  margin-top: clamp(28px, 4.4vw, 46px);
}

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

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

.page-contact .contact-meter {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px 28px;
  border-block: 1px solid var(--line);
  padding-block: clamp(16px, 2.4vw, 22px);
  margin-top: clamp(26px, 4vw, 40px);
}

.page-contact .contact-meter__item {
  display: grid;
  gap: 5px;
}

.page-contact .contact-meter__num {
  font-family: var(--font-mono);
  font-size: clamp(1.22rem, 3vw, 1.55rem);
  line-height: 1.1;
  letter-spacing: .02em;
  color: var(--c-lime);
}

.page-contact .contact-meter__label {
  font-size: .82rem;
  line-height: 1.6;
  color: var(--c-muted);
}

.page-contact .contact-intro {
  margin: 0 0 clamp(18px, 2.6vw, 26px);
  font-size: .96rem;
  line-height: 1.85;
  color: var(--c-muted);
}

/* ---------- 联系方式主卡 ---------- */
.page-contact .contact-card {
  border: 1px solid rgba(200, 255, 61, .42);
  border-radius: var(--r-xl);
  padding: clamp(20px, 3.2vw, 32px);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(200, 255, 61, .1), transparent 58%),
    linear-gradient(160deg, var(--c-deep) 0%, #0e2b24 78%);
  box-shadow: var(--shadow-soft);
}

.page-contact .contact-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 14px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(200, 255, 61, .22);
}

.page-contact .contact-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-lime);
}

.page-contact .contact-card__meta {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--c-muted);
}

.page-contact .contact-line {
  display: grid;
  gap: 14px;
  padding-block: clamp(16px, 2.4vw, 22px);
  border-bottom: 1px dashed var(--line-strong);
}

.page-contact .contact-line:last-child {
  border-bottom: 0;
  padding-bottom: 2px;
}

.page-contact .contact-line__label {
  margin: 0 0 8px;
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--c-muted);
}

.page-contact .contact-line__value {
  display: inline-block;
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.02rem, 3.4vw, 1.4rem);
  line-height: 1.45;
  letter-spacing: .01em;
  color: var(--c-white);
  overflow-wrap: anywhere;
  transition: color var(--dur) var(--ease);
}

.page-contact .contact-line__value--mail {
  font-size: clamp(.94rem, 3.1vw, 1.2rem);
}

.page-contact a.contact-line__value:hover {
  color: var(--c-lime);
}

.page-contact .contact-line__value--addr {
  font-family: var(--font-body);
  font-size: clamp(.96rem, 2.8vw, 1.06rem);
  line-height: 1.7;
}

.page-contact .contact-line__hint {
  margin: 10px 0 0;
  font-size: .85rem;
  line-height: 1.75;
  color: var(--c-muted);
}

.page-contact .contact-line__act {
  display: flex;
  align-items: flex-end;
}

.page-contact .copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid rgba(200, 255, 61, .5);
  border-radius: var(--r-pill);
  background: rgba(200, 255, 61, .1);
  color: var(--c-lime);
  font-size: .88rem;
  letter-spacing: .04em;
  cursor: pointer;
  user-select: none;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .copy-btn:hover {
  background: rgba(200, 255, 61, .2);
  border-color: var(--c-lime);
  transform: translateY(-2px);
}

.page-contact .copy-btn__done {
  display: none;
}

.page-contact .copy-flag:checked + .copy-btn .copy-btn__idle {
  display: none;
}

.page-contact .copy-flag:checked + .copy-btn .copy-btn__done {
  display: inline;
}

.page-contact .copy-flag:focus-visible + .copy-btn {
  outline: 2px solid var(--c-lime);
  outline-offset: 3px;
}

/* ---------- 受理范围 ---------- */
.page-contact .scope-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .scope-item {
  --scope-accent: var(--c-lime);
  position: relative;
  padding: 18px 20px 18px 26px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--c-carbon);
  transition: border-color var(--dur) var(--ease);
}

.page-contact .scope-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--scope-accent);
  transition: width var(--dur) var(--ease);
}

.page-contact .scope-item:hover::before {
  width: 5px;
}

.page-contact .scope-item:hover {
  border-color: var(--line-strong);
}

.page-contact .scope-item--cyan {
  --scope-accent: var(--c-cyan);
}

.page-contact .scope-item--orange {
  --scope-accent: var(--c-orange);
}

.page-contact .scope-item h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
  line-height: 1.5;
  color: var(--c-white);
}

.page-contact .scope-item p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--c-muted);
}

.page-contact .scope-item .tag {
  margin-bottom: 10px;
}

.page-contact .scope-foot {
  margin: 18px 0 0;
  font-size: .88rem;
  line-height: 1.85;
  color: var(--c-muted);
}

.page-contact .scope-foot a {
  color: var(--c-white);
}

/* ---------- 回复节奏 ---------- */
.page-contact .advice-panel {
  border: 1px solid var(--line);
  border-left: 3px solid var(--c-cyan);
  border-radius: var(--r-lg);
  padding: clamp(18px, 3vw, 26px);
  background: var(--c-carbon);
}

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

.page-contact .advice-list li {
  position: relative;
  padding-left: 22px;
  font-size: .92rem;
  line-height: 1.85;
  color: var(--c-muted);
}

.page-contact .advice-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 10px;
  height: 2px;
  background: var(--c-cyan);
}

.page-contact .advice-note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line-strong);
  font-size: .88rem;
  line-height: 1.85;
  color: var(--c-muted);
}

.page-contact .advice-note a {
  color: var(--c-white);
}

/* ---------- 商务与内容合作 ---------- */
.page-contact .coop-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}

.page-contact .coop-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--c-orange);
  border-radius: var(--r-lg);
  background:
    linear-gradient(180deg, rgba(255, 106, 31, .09), transparent 68%),
    var(--c-carbon);
  transition: border-color var(--dur) var(--ease);
}

.page-contact .coop-card:hover {
  border-color: var(--line-strong);
  border-top-color: var(--c-orange);
}

.page-contact .coop-card h3 {
  margin: 0 0 8px;
  font-size: .98rem;
  letter-spacing: .02em;
  color: var(--c-white);
}

.page-contact .coop-card p {
  margin: 0;
  font-size: .88rem;
  line-height: 1.85;
  color: var(--c-muted);
}

/* ---------- 服务说明 ---------- */
.page-contact .coverage-grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-contact .coverage-figure {
  margin: 0;
}

.page-contact .coverage-figure img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: var(--r-lg);
}

.page-contact .coverage-facts {
  list-style: none;
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .coverage-facts li {
  position: relative;
  padding-left: 18px;
  font-size: .89rem;
  line-height: 1.75;
  color: var(--c-muted);
}

.page-contact .coverage-facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 9px;
  height: 1px;
  background: var(--c-amber);
}

.page-contact .coverage-facts .mono {
  margin-right: 6px;
  font-size: .98rem;
  color: var(--c-amber);
}

/* ---------- 邮件主题选择器 ---------- */
.page-contact .topic-picker {
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  padding: clamp(18px, 3vw, 26px);
  background: var(--c-carbon);
}

.page-contact .topic-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.page-contact .topic-tab {
  padding: 9px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-pill);
  font-size: .86rem;
  letter-spacing: .03em;
  color: var(--c-muted);
  cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .topic-tab:hover {
  color: var(--c-white);
  border-color: var(--c-muted);
}

.page-contact .topic-panel {
  display: none;
}

.page-contact .topic-panel p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.9;
  color: var(--c-muted);
}

.page-contact .topic-panel strong {
  color: var(--c-white);
  font-weight: 600;
}

.page-contact #topic-data:checked ~ .topic-tabs label[for="topic-data"],
.page-contact #topic-clip:checked ~ .topic-tabs label[for="topic-clip"],
.page-contact #topic-league:checked ~ .topic-tabs label[for="topic-league"] {
  background: rgba(200, 255, 61, .14);
  border-color: var(--c-lime);
  color: var(--c-lime);
}

.page-contact #topic-data:checked ~ .topic-panels .topic-panel[data-topic="data"],
.page-contact #topic-clip:checked ~ .topic-panels .topic-panel[data-topic="clip"],
.page-contact #topic-league:checked ~ .topic-panels .topic-panel[data-topic="league"] {
  display: block;
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-contact .contact-line {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }

  .page-contact .contact-line__act {
    padding-bottom: 2px;
  }
}

@media (min-width: 760px) {
  .page-contact .coverage-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
    align-items: center;
  }
}

@media (max-width: 479px) {
  .page-contact .contact-meter {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .page-contact .contact-meter__item {
    display: flex;
    align-items: baseline;
    gap: 12px;
  }

  .page-contact .contact-meter__num {
    min-width: 74px;
  }

  .page-contact .copy-btn {
    width: 100%;
    justify-content: center;
  }
}