.page-contact {
  background: var(--color-white);
  color: var(--color-dark);
  overflow-x: clip;
}

/* ========== HERO ========== */
.page-contact__hero {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-3) var(--gutter) var(--space-5);
  position: relative;
}

.page-contact__hero::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 62%;
  height: 3px;
  background: var(--color-accent);
  z-index: 1;
}

.page-contact__hero::after {
  content: '';
  position: absolute;
  right: -10%;
  top: 42%;
  width: 42%;
  height: 5px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  transform: rotate(-8deg);
  opacity: .45;
  z-index: 0;
}

.page-contact__hero-main {
  display: grid;
  gap: var(--space-4);
  align-items: center;
  margin-top: var(--space-3);
}

.page-contact__hero-text {
  position: relative;
  z-index: 1;
}

.page-contact__hero-text::after {
  content: '';
  display: block;
  width: 96px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
  margin-top: var(--space-3);
}

.page-contact__hero-index {
  font-family: var(--font-mono);
  font-size: var(--caption);
  letter-spacing: .14em;
  color: var(--color-pale-gold);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
  display: inline-flex;
  align-items: center;
  gap: .5rem;
}

.page-contact__hero-index::before {
  content: '';
  width: 2.5rem;
  height: 1px;
  background: var(--color-accent);
}

.page-contact__hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 5vw, var(--h1));
  line-height: 1.14;
  margin: 0 0 var(--space-3);
  letter-spacing: .01em;
}

.page-contact__hero-lead {
  color: var(--color-off-white);
  max-width: 34em;
  font-size: var(--body);
  line-height: 1.85;
  margin: 0;
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-2);
}

.page-contact__hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1.5rem;
  margin-top: var(--space-3);
}

.page-contact__hero-meta-item {
  font-family: var(--font-mono);
  font-size: var(--caption);
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  color: var(--color-white);
}

.page-contact__hero-meta-key {
  color: var(--color-accent);
  opacity: .9;
}

.page-contact__hero-visual {
  position: relative;
  z-index: 1;
}

.page-contact__hero-visual::before {
  content: '';
  position: absolute;
  inset: -12px 12px 12px -12px;
  border: 1px solid var(--color-accent);
  opacity: .35;
  pointer-events: none;
}

.page-contact__hero-frame {
  background: var(--color-muted-green);
}

.page-contact__hero-frame img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ========== CHANNELS ========== */
.page-contact__channels {
  background: var(--color-white);
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}

.page-contact__channels-grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-4);
  align-items: start;
}

.page-contact__index-card {
  background: linear-gradient(150deg, var(--color-muted-green) 0%, var(--color-primary) 62%, var(--color-dark) 100%);
  border-radius: 4px;
  border-top: 3px solid var(--color-accent);
  padding: var(--space-4);
  position: relative;
  color: var(--color-white);
  box-shadow: 0 18px 40px rgba(11, 61, 46, .28);
  min-height: 300px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
}

.page-contact__index-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(212, 175, 55, .12) 1px, transparent 1.2px);
  background-size: 18px 18px;
  pointer-events: none;
}

.page-contact__index-card::after {
  content: '';
  position: absolute;
  right: -18%;
  top: -10%;
  width: 48%;
  height: 70%;
  border: 2px solid rgba(212, 175, 55, .28);
  transform: rotate(20deg);
  border-radius: 6px;
  pointer-events: none;
}

.page-contact__index-card-head {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--caption);
  letter-spacing: .18em;
  color: var(--color-pale-gold);
  border-bottom: 1px solid rgba(255, 255, 255, .15);
  padding-bottom: var(--space-2);
}

.page-contact__index-card-status {
  color: var(--color-accent);
}

.page-contact__index-card-title {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.25;
  margin: var(--space-3) 0 var(--space-2);
  letter-spacing: .02em;
}

.page-contact__index-card-list {
  position: relative;
  z-index: 1;
  margin: 0;
}

.page-contact__index-card-list div {
  display: flex;
  align-items: center;
  padding: .35rem 0;
  font-family: var(--font-mono);
  font-size: var(--caption);
  border-bottom: 1px dashed rgba(255, 255, 255, .12);
}

.page-contact__index-card-list dt {
  color: var(--color-accent);
  margin-right: 1rem;
  min-width: 2.2rem;
}

.page-contact__index-card-list dd {
  margin: 0;
  color: var(--color-white);
}

.page-contact__index-dots {
  position: relative;
  z-index: 1;
  display: flex;
  gap: .4rem;
  margin-top: var(--space-3);
}

.page-contact__index-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  opacity: .7;
}

.page-contact__channel-list {
  display: grid;
  gap: var(--space-3);
}

.page-contact__channel-item {
  background: linear-gradient(160deg, #f4f7f1 0%, #eef2ec 100%);
  border: 1px solid #dbe3d8;
  border-left: 5px solid var(--color-accent);
  border-radius: 2px;
  padding: var(--space-3);
  box-shadow: 0 12px 28px rgba(18, 23, 21, .05);
  display: block;
}

.page-contact__channel-code {
  font-family: var(--font-mono);
  font-size: var(--caption);
  color: var(--color-accent);
  border: 1px solid rgba(212, 175, 55, .6);
  border-radius: 3px;
  padding: .2rem .5rem;
  white-space: nowrap;
  display: inline-block;
  margin-bottom: .35rem;
}

.page-contact__channel-body {
  min-width: 0;
}

.page-contact__channel-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 .35rem;
  color: var(--color-dark);
}

.page-contact__channel-desc {
  font-size: var(--caption);
  color: #4a5d52;
  line-height: 1.7;
  margin-bottom: var(--space-2);
  max-width: 38em;
}

.page-contact__channel-value {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .75rem;
  background: var(--color-dark);
  padding: .7rem .9rem;
  border-radius: 2px;
  color: var(--color-white);
}

.page-contact__channel-value-text,
.page-contact__call-link {
  font-family: var(--font-mono);
  font-size: clamp(.9rem, 3vw, 1rem);
  color: var(--color-pale-gold);
  letter-spacing: .01em;
}

.page-contact__call-link {
  text-decoration: none;
  border-bottom: 1px solid rgba(212, 175, 55, .5);
  transition: color .3s ease, border-color .3s ease;
}

.page-contact__call-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.page-contact__copy-btn {
  background: transparent;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  padding: .3rem .8rem;
  font-family: var(--font-mono);
  font-size: var(--caption);
  border-radius: 2px;
  cursor: pointer;
  transition: background .3s ease, color .3s ease, border-color .3s ease;
}

.page-contact__copy-btn:hover {
  background: var(--color-accent);
  color: var(--color-dark);
}

.page-contact__copy-btn.version-copy--copied {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-dark);
}

.page-contact__copy-btn.version-copy--copied .page-contact__copy-text {
  display: none;
}

.page-contact__copy-btn.version-copy--copied::after {
  content: '已复制';
}

.page-contact__expand {
  margin-top: var(--space-2);
  font-size: var(--caption);
  line-height: 1.65;
}

.page-contact__expand summary {
  cursor: pointer;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: var(--caption);
  font-weight: 600;
  letter-spacing: .03em;
}

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

.page-contact__expand summary::before {
  content: '＋';
  color: var(--color-accent);
}

.page-contact__expand[open] summary::before {
  content: '－';
}

.page-contact__expand p {
  margin-top: .6rem;
  padding: .7rem .9rem;
  background: rgba(212, 175, 55, .09);
  border-left: 2px solid var(--color-accent);
  border-radius: 2px;
  color: #405148;
}

.page-contact__channel-alert {
  margin-top: var(--space-4);
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  background: var(--color-muted-green);
  border-left: 4px solid var(--color-accent);
  padding: var(--space-2) var(--space-3);
  border-radius: 2px;
  font-size: var(--caption);
  line-height: 1.75;
  color: var(--color-off-white);
}

.page-contact__channel-alert-code {
  font-family: var(--font-mono);
  color: var(--color-accent);
  white-space: nowrap;
  font-weight: 700;
  letter-spacing: .05em;
}

.page-contact__channel-alert p {
  margin: 0;
}

/* ========== ADDRESS ========== */
.page-contact__address {
  background: linear-gradient(180deg, #e8ece6 0%, #f3f5ef 100%);
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}

.page-contact__address-grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-4);
  align-items: center;
}

.page-contact__address-card {
  background: var(--color-white);
  border: 2px solid var(--color-accent);
  padding: var(--space-4);
  position: relative;
  box-shadow: 10px 12px 0 rgba(11, 61, 46, .14);
}

.page-contact__address-card::before {
  content: '';
  position: absolute;
  top: -2px;
  right: -2px;
  width: 32px;
  height: 32px;
  background: var(--color-accent);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
}

.page-contact__address-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #e3e2d8;
  padding-bottom: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--caption);
  letter-spacing: .1em;
}

.page-contact__address-code {
  color: var(--color-accent);
  font-weight: 700;
}

.page-contact__address-valid {
  color: #8a928a;
  letter-spacing: .14em;
}

.page-contact__address-label {
  margin-top: var(--space-3);
  color: #6b776d;
  font-size: var(--caption);
  letter-spacing: .04em;
}

.page-contact__address-text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.1rem, 4vw, 1.7rem);
  line-height: 1.45;
  color: var(--color-primary);
  margin: .4rem 0 var(--space-3);
}

.page-contact__address-line {
  height: 2px;
  width: 80%;
  background: linear-gradient(90deg, var(--color-accent), transparent);
  margin-bottom: var(--space-2);
}

.page-contact__address-note {
  font-size: var(--caption);
  color: #5d685f;
  line-height: 1.75;
  max-width: 38em;
}

.page-contact__address-decor {
  position: relative;
  min-height: 220px;
  background:
    radial-gradient(circle at 20% 30%, rgba(212, 175, 55, .16) 2px, transparent 2.5px),
    radial-gradient(circle at 60% 40%, rgba(11, 61, 46, .12) 2px, transparent 2.5px),
    radial-gradient(circle at 80% 80%, rgba(42, 107, 79, .14) 2px, transparent 2.5px);
  background-size: 42px 42px, 56px 56px, 32px 32px;
  border: 1px dashed rgba(11, 61, 46, .22);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-contact__address-rings {
  position: relative;
  width: 120px;
  height: 120px;
}

.page-contact__address-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid var(--color-accent);
}

.page-contact__address-ring--1 {
  opacity: .4;
}

.page-contact__address-ring--2 {
  opacity: .25;
  transform: scale(.7);
}

.page-contact__address-ring--3 {
  opacity: .15;
  transform: scale(.4);
}

.page-contact__address-pin {
  position: absolute;
  top: calc(50% - 10px);
  left: calc(50% - 10px);
  width: 20px;
  height: 20px;
  background: var(--color-accent);
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
}

.page-contact__address-pin::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 6px;
  height: 6px;
  background: var(--color-white);
  transform: translate(-50%, -50%);
  border-radius: 50%;
}

.page-contact__address-coord {
  position: absolute;
  bottom: var(--space-3);
  left: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--caption);
  color: var(--color-primary);
  letter-spacing: .1em;
}

/* ========== PREPARE ========== */
.page-contact__prepare {
  background: var(--color-white);
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}

.page-contact__prepare-grid {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
  align-items: start;
}

.page-contact__prepare-intro {
  background: var(--color-white);
  border: 1px solid #edf0ea;
  padding: var(--space-4);
  position: relative;
  box-shadow: 8px 8px 0 rgba(42, 107, 79, .1);
}

.page-contact__prepare-intro h3 {
  font-size: 1.1rem;
  margin: 0 0 .5rem;
  color: var(--color-dark);
}

.page-contact__prepare-intro > p {
  color: #5d685f;
  line-height: 1.75;
  margin: 0 0 var(--space-2);
}

.page-contact__prepare-tag {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-dark);
  font-family: var(--font-mono);
  font-size: var(--caption);
  padding: .2rem .6rem;
  border-radius: 2px;
}

.page-contact__prepare-example {
  background: var(--color-dark);
  padding: .8rem 1rem;
  margin-top: var(--space-2);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .6rem 1rem;
  font-family: var(--font-mono);
}

.page-contact__prepare-example-code {
  color: var(--color-pale-gold);
  font-size: var(--body);
  letter-spacing: .04em;
}

.page-contact__prepare-example-desc {
  color: #babfba;
  font-size: var(--caption);
}

.page-contact__tabs {
  background: #f4f7f1;
  border: 1px solid #e0e6dc;
  padding: var(--space-2);
}

.page-contact__tabs-list {
  display: flex;
  flex-wrap: wrap;
  gap: .2rem;
}

.page-contact__tab-button {
  font-family: var(--font-mono);
  font-size: var(--caption);
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  padding: .55rem .6rem;
  color: #4a5d52;
  cursor: pointer;
  transition: color .3s ease, border-color .3s ease, background .3s ease;
}

.page-contact__tab-button:hover {
  color: var(--color-primary);
}

.page-contact__tab-button[aria-selected="true"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}

.page-contact__tab-panel {
  border-top: 1px solid #e2e6dc;
  color: #405148;
  font-size: var(--body);
  line-height: 1.85;
  padding: var(--space-3) var(--space-2) .5rem;
}

.page-contact__visual-card {
  margin-top: var(--space-4);
}

.page-contact__visual-card img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* ========== PROCESS ========== */
.page-contact__process {
  background:
    repeating-linear-gradient(
      -8deg,
      transparent 0px,
      transparent 22px,
      rgba(212, 175, 55, .05) 22px,
      rgba(212, 175, 55, .05) 23px
    ),
    var(--color-primary);
  color: var(--color-white);
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}

.page-contact__process .section-title {
  color: var(--color-white);
}

.page-contact__process .section-desc {
  color: var(--color-off-white);
}

.page-contact__process-grid {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.page-contact__process-step {
  border: 1px solid rgba(212, 175, 55, .4);
  border-top: 3px solid var(--color-accent);
  background: var(--color-muted-green);
  padding: var(--space-3) var(--space-2) var(--space-3);
  border-radius: 2px;
}

.page-contact__process-num {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--color-accent);
  font-weight: 700;
  line-height: 1;
}

.page-contact__process-step h3 {
  font-size: 1.05rem;
  margin: .5rem 0 .5rem;
  color: var(--color-white);
}

.page-contact__process-step p {
  font-size: var(--caption);
  line-height: 1.75;
  color: var(--color-off-white);
  margin: 0;
}

.page-contact__process-note {
  margin-top: var(--space-3);
  display: flex;
  gap: .8rem;
  background: rgba(255, 255, 255, .04);
  border: 1px dashed rgba(212, 175, 55, .4);
  padding: var(--space-2) var(--space-3);
  border-radius: 2px;
}

.page-contact__process-note p {
  margin: 0;
  font-size: var(--caption);
  line-height: 1.7;
  color: var(--color-off-white);
}

.page-contact__process-note-dot {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  display: inline-block;
  margin-top: .3rem;
}

/* ========== BIZ ========== */
.page-contact__biz {
  background: linear-gradient(180deg, #f3f5ef 0%, #e8ece4 100%);
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}

.page-contact__biz-grid {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.page-contact__biz-card {
  background: var(--color-white);
  border: 1px solid #dce4d8;
  border-left: 4px solid var(--color-accent);
  padding: var(--space-4);
  box-shadow: 0 10px 26px rgba(18, 23, 21, .05);
  border-radius: 2px;
}

.page-contact__biz-label {
  font-family: var(--font-mono);
  font-size: var(--caption);
  letter-spacing: .14em;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
  display: inline-block;
}

.page-contact__biz-card h3 {
  margin: 0 0 .6rem;
  font-size: 1.15rem;
  color: var(--color-primary);
}

.page-contact__biz-card p {
  color: #4e5d53;
  line-height: 1.78;
  font-size: var(--body);
  margin-bottom: var(--space-2);
}

.page-contact__biz-channel {
  font-family: var(--font-mono);
  font-size: var(--caption);
  color: var(--color-primary);
  background: rgba(42, 107, 79, .08);
  padding: .55rem .8rem;
  border-radius: 2px;
  line-height: 1.6;
}

.page-contact__legal-note {
  margin-top: var(--space-3);
  font-size: var(--caption);
  color: #5a675d;
  line-height: 1.7;
}

.page-contact__legal-note a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ========== CLOSING ========== */
.page-contact__closing {
  background: var(--color-dark);
  color: var(--color-white);
  padding: var(--space-5) var(--gutter);
  text-align: center;
}

.page-contact__closing-inner {
  max-width: 660px;
  margin: 0 auto;
}

.page-contact__closing-code {
  font-family: var(--font-mono);
  letter-spacing: .24em;
  color: var(--color-accent);
  font-size: var(--caption);
  text-transform: uppercase;
}

.page-contact__closing p {
  color: var(--color-off-white);
  line-height: 1.8;
  margin: var(--space-2) 0 var(--space-3);
}

.page-contact__closing .btn {
  margin: 0 .35rem .6rem;
}

/* ========== DESKTOP ========== */
@media (min-width: 960px) {
  .page-contact__hero {
    padding: var(--space-4) var(--gutter) var(--space-6);
  }

  .page-contact__hero-main {
    grid-template-columns: 1.15fr .85fr;
    gap: var(--space-5);
  }

  .page-contact__hero h1 {
    font-size: var(--h1);
  }

  .page-contact__channels-grid {
    grid-template-columns: .9fr 1.1fr;
    gap: var(--space-5);
  }

  .page-contact__channel-item {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-3) var(--space-2);
  }

  .page-contact__channel-code {
    flex-shrink: 0;
    margin-top: .25rem;
    margin-bottom: 0;
  }

  .page-contact__channel-value {
    flex-wrap: nowrap;
  }

  .page-contact__address-grid {
    grid-template-columns: 1.15fr .85fr;
    gap: var(--space-5);
  }

  .page-contact__address-card {
    padding: var(--space-5);
  }

  .page-contact__prepare-grid {
    grid-template-columns: .8fr 1.2fr;
    gap: var(--space-4);
  }

  .page-contact__process-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
  }

  .page-contact__biz-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
  }
}