/* =====================================================
   Page: contact — 联系我们
   Scope: .page-contact
   ===================================================== */
.page-contact {
  --contact-pad: clamp(1.25rem, 3vw, 2.75rem);
  --contact-subtle: rgba(148, 163, 184, 0.72);
  background: var(--c-bg);
  color: var(--c-white);
  overflow-x: hidden;
}

/* ---------- Hero 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: 132px 0 64px;
  overflow: hidden;
}
.page-contact .contact-hero__media {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  z-index: 0;
  overflow: hidden;
  background: var(--c-bg-deep);
}
.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 60%;
  opacity: 0.36;
}
.page-contact .contact-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    100deg,
    rgba(10, 14, 23, 0.96) 0%,
    rgba(10, 14, 23, 0.74) 46%,
    rgba(15, 23, 42, 0.42) 100%
  );
}
.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(30, 41, 59, 0.32) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 41, 59, 0.32) 1px, transparent 1px);
  background-size: 48px 48px;
}
.page-contact .contact-hero .container {
  position: relative;
  z-index: 1;
}
.page-contact .contact-hero .breadcrumb {
  margin-bottom: 44px;
  padding: 0;
}
.page-contact .contact-hero__grid {
  display: grid;
  gap: 38px;
}
.page-contact .contact-hero__eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-accent);
  border-left: 3px solid var(--c-accent);
  padding-left: 12px;
  margin-bottom: 18px;
}
.page-contact .contact-hero h1 {
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: clamp(2.4rem, 6.8vw, 5.25rem);
  line-height: 0.98;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  margin: 0 0 20px;
  max-width: 11em;
}
.page-contact .contact-hero__lead {
  color: var(--c-gray);
  line-height: 1.8;
  font-size: clamp(0.95rem, 1.4vw, 1.08rem);
  max-width: 50ch;
}
.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}
.page-contact .contact-hero__actions .btn {
  min-width: 160px;
}
.page-contact .contact-hero__side {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.page-contact .contact-hero__stat {
  border-top: 3px solid var(--c-border);
  padding-top: 14px;
  transition: border-color var(--transition);
}
.page-contact .contact-hero__stat:hover {
  border-top-color: var(--c-accent);
}
.page-contact .contact-hero__stat:nth-child(2) {
  border-top-color: rgba(255, 107, 53, 0.6);
}
.page-contact .contact-hero__stat:nth-child(3) {
  border-top-color: rgba(248, 250, 252, 0.35);
}
.page-contact .contact-hero__stat-value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 3vw, 2.1rem);
  font-weight: 800;
  color: var(--c-white);
  line-height: 1.1;
}
.page-contact .contact-hero__stat-label {
  display: block;
  font-size: 0.78rem;
  color: var(--c-gray);
  margin-top: 5px;
  letter-spacing: 0.04em;
}

/* ---------- 主体：左右非对称布局 ---------- */
.page-contact .contact-main {
  padding: 64px 0 0;
  position: relative;
}
.page-contact .contact-main::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--c-accent), transparent 76%);
}
.page-contact .contact-layout {
  display: grid;
  gap: 32px;
}
.page-contact .contact-stack {
  display: grid;
  gap: 24px;
  align-content: start;
}

/* ---------- 左侧信息卡片 ---------- */
.page-contact .contact-card {
  position: relative;
  background: linear-gradient(145deg, rgba(17, 24, 39, 0.94), rgba(15, 23, 42, 0.88));
  border: 1px solid var(--c-border);
  padding: var(--contact-pad);
  transition: border-color var(--transition), transform var(--transition);
}
.page-contact .contact-card:hover {
  border-color: rgba(57, 255, 136, 0.32);
  transform: translateY(-2px);
}
.page-contact .contact-card--support {
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}
.page-contact .contact-card--coop {
  clip-path: polygon(24px 0, 100% 0, 100% 100%, 0 100%, 0 24px);
}
.page-contact .contact-card--address {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}
.page-contact .contact-card__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.page-contact .contact-card__index {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: rgba(148, 163, 184, 0.5);
  padding-top: 4px;
  letter-spacing: 0.08em;
}
.page-contact .contact-card__icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  background: rgba(57, 255, 136, 0.08);
  border: 1px solid rgba(57, 255, 136, 0.24);
  color: var(--c-accent);
}
.page-contact .contact-card--coop .contact-card__icon {
  background: rgba(255, 107, 53, 0.08);
  border-color: rgba(255, 107, 53, 0.26);
  color: var(--c-orange);
}
.page-contact .contact-card--address .contact-card__icon {
  background: rgba(148, 163, 184, 0.08);
  border-color: rgba(148, 163, 184, 0.26);
  color: var(--c-white);
}
.page-contact .contact-card__heading h2 {
  font-family: var(--font-headline);
  font-size: 1.46rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 4px;
}
.page-contact .contact-card__heading p {
  font-size: 0.86rem;
}
.page-contact .contact-card__body {
  margin-top: 26px;
  border-top: 1px solid var(--c-border);
  padding-top: 22px;
}
.page-contact .contact-card__note,
.page-contact .contact-card__text {
  color: var(--contact-subtle);
  line-height: 1.7;
  font-size: 0.92rem;
  margin: 16px 0 0;
}
.page-contact .contact-card__note a,
.page-contact .contact-card__text a {
  color: var(--c-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* 邮箱与电话 */
.page-contact .contact-email {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  color: var(--c-accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 255, 136, 0.3);
  padding-bottom: 2px;
  word-break: break-all;
  transition: border-color var(--transition), color var(--transition);
}
.page-contact .contact-email:hover {
  border-bottom-color: var(--c-accent);
  color: var(--c-white);
}
.page-contact .contact-phone {
  display: block;
  width: fit-content;
  font-family: var(--font-mono);
  font-size: clamp(2rem, 5.5vw, 3.1rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: 0.02em;
  color: var(--c-white);
  text-decoration: none;
  margin-top: 18px;
  padding-left: 14px;
  border-left: 4px solid var(--c-accent);
  transition: border-color var(--transition), color var(--transition);
}
.page-contact .contact-phone:hover {
  color: var(--c-accent);
}
.page-contact .contact-phone--coop {
  border-left-color: var(--c-orange);
  color: var(--c-white);
}
.page-contact .contact-phone--coop:hover {
  color: var(--c-orange);
}
.page-contact .contact-address {
  font-style: normal;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--c-white);
  padding-left: 16px;
  border-left: 2px solid var(--c-accent);
  margin: 20px 0 0;
}
.page-contact .contact-map {
  margin: 22px 0 0;
  border: 1px solid var(--c-border);
  overflow: hidden;
}
.page-contact .contact-map img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.page-contact .contact-map:hover img {
  transform: scale(1.02);
}

/* ---------- 右侧留言表单 ---------- */
.page-contact .contact-formside {
  display: flex;
  flex-direction: column;
  position: relative;
  padding: var(--contact-pad);
  background: linear-gradient(180deg, rgba(17, 24, 39, 0.96), rgba(15, 23, 42, 0.9));
  border: 1px solid var(--c-border);
  border-top: 3px solid var(--c-accent);
}
.page-contact .contact-formside__tag {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  color: var(--c-accent);
  padding: 6px 12px;
  margin-bottom: 16px;
  background: rgba(57, 255, 136, 0.08);
  border: 1px solid rgba(57, 255, 136, 0.22);
}
.page-contact .contact-formside h2 {
  font-family: var(--font-headline);
  font-size: clamp(2rem, 4vw, 3.1rem);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 8px;
}
.page-contact .contact-formside__desc {
  color: var(--c-gray);
  line-height: 1.7;
  font-size: 0.95rem;
  max-width: 48ch;
  margin: 0 0 28px;
}
.page-contact .contact-form {
  flex: 1;
  display: flex;
  flex-direction: column;
}
.page-contact .form-field {
  margin-bottom: 18px;
}
.page-contact .form-field label {
  display: block;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  color: var(--c-gray);
  margin-bottom: 8px;
  font-weight: 600;
}
.page-contact .form-field input,
.page-contact .form-field select,
.page-contact .form-field textarea {
  box-sizing: border-box;
  width: 100%;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: 0;
  color: var(--c-white);
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 12px 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.page-contact .form-field input::placeholder,
.page-contact .form-field textarea::placeholder {
  color: rgba(148, 163, 184, 0.55);
}
.page-contact .form-field input:focus,
.page-contact .form-field select:focus,
.page-contact .form-field textarea:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(57, 255, 136, 0.15);
  background: rgba(10, 14, 23, 0.92);
}
.page-contact .form-field select {
  appearance: none;
  -webkit-appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--c-gray) 50%),
    linear-gradient(135deg, var(--c-gray) 50%, transparent 50%);
  background-position:
    calc(100% - 20px) 50%,
    calc(100% - 15px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  cursor: pointer;
}
.page-contact .form-field textarea {
  resize: vertical;
  min-height: 120px;
}
.page-contact .contact-form__submit {
  margin-top: auto;
  padding: 16px 24px;
  font-size: 1rem;
  letter-spacing: 0.08em;
  cursor: pointer;
}
.page-contact .contact-form__hint {
  margin: 14px 0 0;
  font-size: 0.85rem;
  color: var(--contact-subtle);
  text-align: center;
  line-height: 1.6;
}
.page-contact .contact-form__hint a {
  color: var(--c-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---------- 官方渠道注意 ---------- */
.page-contact .contact-notice {
  padding: 80px 0 100px;
}
.page-contact .contact-notice__panel {
  background: linear-gradient(145deg, rgba(17, 24, 39, 0.92), rgba(15, 23, 42, 0.95));
  border: 1px solid var(--c-border);
  padding: clamp(1.5rem, 4vw, 3.5rem);
}
.page-contact .contact-notice__head {
  margin-bottom: 32px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--c-border);
}
.page-contact .contact-notice__head h2 {
  font-family: var(--font-headline);
  font-size: clamp(2rem, 4vw, 3rem);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0;
}
.page-contact .contact-notice__head p {
  color: var(--c-gray);
  margin: 8px 0 0;
  font-size: 0.95rem;
}
.page-contact .contact-notice__grid {
  display: grid;
  gap: 16px;
}
.page-contact .contact-notice__item {
  position: relative;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  padding: clamp(1.25rem, 2.4vw, 2rem);
  transition: border-color var(--transition);
}
.page-contact .contact-notice__item:hover {
  border-color: rgba(57, 255, 136, 0.35);
}
.page-contact .contact-notice__item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--c-orange);
}
.page-contact .contact-notice__item:nth-child(1)::before,
.page-contact .contact-notice__item:nth-child(4)::before {
  background: var(--c-accent);
}
.page-contact .contact-notice__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  letter-spacing: 0.1em;
  color: var(--c-orange);
  margin-bottom: 14px;
}
.page-contact .contact-notice__item h3 {
  font-family: var(--font-headline);
  font-size: 1.24rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 8px;
}
.page-contact .contact-notice__item p {
  color: var(--c-gray);
  line-height: 1.75;
  font-size: 0.94rem;
  margin: 0;
}
.page-contact .contact-notice__item a {
  color: var(--c-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---------- 响应式：平板 ---------- */
@media (min-width: 768px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: 3fr 2fr;
    align-items: end;
  }
  .page-contact .contact-hero__side {
    gap: 16px;
  }
  .page-contact .contact-notice__grid {
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }
}

/* ---------- 响应式：桌面 ---------- */
@media (min-width: 1024px) {
  .page-contact .contact-hero {
    padding: 168px 0 88px;
  }
  .page-contact .contact-hero .breadcrumb {
    margin-bottom: 64px;
  }
  .page-contact .contact-main {
    padding-top: 88px;
  }
  .page-contact .contact-layout {
    grid-template-columns: 5fr 7fr;
    gap: 48px;
    align-items: start;
  }
  .page-contact .contact-stack {
    gap: 28px;
  }
  .page-contact .contact-card--coop {
    margin-left: 26px;
  }
  .page-contact .contact-card--address {
    margin-left: 12px;
  }
  .page-contact .contact-notice {
    padding: 96px 0 120px;
  }
  .page-contact .contact-notice__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    background: var(--c-border);
    border: 1px solid var(--c-border);
  }
  .page-contact .contact-notice__item {
    border: none;
    min-height: 100%;
  }
  .page-contact .contact-notice__item + .contact-notice__item {
    border-left: 1px solid var(--c-border);
  }
}