/* =========================================================
   page-contact · 咨询与支持
   ========================================================= */

.page-contact {
  --pc-cut: 22px;
  --pc-soft: rgba(27, 38, 55, .55);
  position: relative;
  isolation: isolate;
  overflow-x: hidden;
}

.page-contact .section {
  position: relative;
  padding: clamp(60px, 8.5vw, 116px) 0;
}

.page-contact .section--lead-in {
  padding-top: clamp(48px, 7vw, 96px);
}

.page-contact .section--banded {
  background: linear-gradient(180deg, rgba(15, 23, 36, .85), rgba(8, 13, 22, 0));
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  padding: clamp(96px, 13vw, 172px) 0 clamp(40px, 6vw, 76px);
  border-bottom: 1px solid var(--divider);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(620px 320px at 8% 0%, rgba(61, 255, 166, .13), transparent 68%),
    radial-gradient(520px 300px at 92% 14%, rgba(89, 225, 255, .08), transparent 70%),
    repeating-linear-gradient(98deg, rgba(27, 38, 55, .5) 0 1px, transparent 1px 36px);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, .35) 62%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, .35) 62%, transparent 100%);
  pointer-events: none;
}

.page-contact .contact-hero > .container {
  position: relative;
  z-index: 1;
}

.page-contact .hero-grid {
  display: grid;
  gap: var(--s4);
  margin-top: clamp(26px, 4.5vw, 54px);
}

.page-contact .hero-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--green);
}

.page-contact .hero-title {
  margin: var(--s3) 0;
  font-size: clamp(38px, 7.2vw, 84px);
  font-weight: 900;
  line-height: .98;
  letter-spacing: -.02em;
  max-width: 16ch;
}

.page-contact .hero-title em {
  display: block;
  font-style: normal;
  color: var(--green);
}

.page-contact .hero-lead > .lead {
  margin: 0 0 var(--s4);
  max-width: 56ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.75;
  color: var(--gray);
}

.page-contact .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .hero-side {
  display: flex;
  align-items: flex-end;
  gap: var(--s3);
}

.page-contact .hero-side .annot--vertical {
  writing-mode: vertical-rl;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--gray);
  opacity: .8;
  margin: 0;
}

.page-contact .hero-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 14px;
  border-left: 2px solid var(--green);
}

.page-contact .hero-stat .stat-value {
  font-size: clamp(44px, 6vw, 72px);
  line-height: .9;
}

.page-contact .hero-stat__unit {
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--gray);
}

/* ---------- 渠道卡 ---------- */

.page-contact .channel-stack {
  display: grid;
  gap: 14px;
}

.page-contact .channel {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  padding-left: clamp(22px, 2.8vw, 30px);
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--pc-cut)) 0, 100% var(--pc-cut), 100% 100%, 0 100%);
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}

.page-contact .channel::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 52px;
  background: var(--green);
}

.page-contact .channel--general::after { background: var(--cyan); }
.page-contact .channel--phone::after { background: var(--orange); }

.page-contact .channel:hover {
  border-color: var(--cyan-line);
  transform: translateY(-2px);
}

.page-contact .channel__top {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.page-contact .channel__name {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
}

.page-contact .channel__value {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.1vw, 23px);
  font-weight: 700;
  letter-spacing: .01em;
  word-break: break-all;
  color: var(--white);
}

.page-contact .channel__desc {
  margin: 0;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--gray);
}

/* ---------- 咨询类型面板 ---------- */

.page-contact .ask {
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-contact .ask__title {
  margin: 0 0 6px;
  font-size: clamp(20px, 2.4vw, 24px);
  font-weight: 700;
}

.page-contact .ask__desc {
  margin: 0 0 var(--s3);
  font-size: 14px;
  line-height: 1.65;
  color: var(--gray);
}

.page-contact .ask__item {
  position: relative;
  background: rgba(8, 13, 22, .55);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-contact .ask__item + .ask__item { margin-top: 8px; }

.page-contact .ask__item[open] {
  border-color: var(--green-line);
  background: rgba(61, 255, 166, .06);
}

.page-contact .ask__sum {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  padding: 12px 16px;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  transition: color .18s var(--ease);
}

.page-contact .ask__sum::-webkit-details-marker { display: none; }

.page-contact .ask__sum::after {
  content: "";
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--gray);
  border-bottom: 2px solid var(--gray);
  transform: rotate(45deg);
  transition: transform .2s var(--ease), border-color .18s var(--ease);
}

.page-contact .ask__item[open] .ask__sum::after {
  transform: rotate(-135deg);
  border-color: var(--green);
}

.page-contact .ask__sum:hover { color: var(--cyan); }

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

.page-contact .ask__body {
  position: relative;
  padding: 14px 16px 18px;
  border-top: 1px dashed var(--divider);
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}

.page-contact .ask__body::after {
  content: "";
  position: absolute;
  left: 16px;
  top: 0;
  width: 56px;
  height: 2px;
  background: linear-gradient(90deg, var(--green-line), transparent);
}

.page-contact .ask__body p { margin: 0 0 8px; }
.page-contact .ask__body p:last-child { margin-bottom: 0; }

.page-contact .ask__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
}

.page-contact .ask__body a:hover { color: var(--green); border-color: var(--green-line); }

/* ---------- 服务时段 ---------- */

.page-contact .hours-band {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 12px 14px;
  padding: clamp(16px, 2.2vw, 22px);
  background: rgba(15, 23, 36, .7);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.page-contact .hours-band__key {
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  color: var(--white);
}

.page-contact .hours-band__cell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
}

.page-contact .hours-band__track {
  position: relative;
  display: block;
  height: 14px;
  border-radius: var(--pill);
  background: rgba(27, 38, 55, .78);
  overflow: hidden;
}

.page-contact .hours-band__track::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, var(--divider) 0 1px, transparent 1px 4.1667%);
  opacity: .5;
}

.page-contact .hours-band__fill {
  position: absolute;
  top: 0;
  bottom: 0;
  border-radius: var(--pill);
}

.page-contact .hours-band__fill--green {
  left: 37.5%;
  right: 12.5%;
  background: linear-gradient(90deg, var(--green), rgba(61, 255, 166, .42));
}

.page-contact .hours-band__fill--orange {
  left: 41.6667%;
  right: 25%;
  background: linear-gradient(90deg, var(--orange), rgba(255, 122, 47, .42));
}

.page-contact .hours-band__val {
  font-size: 12.5px;
  white-space: nowrap;
  color: var(--gray);
}

.page-contact .hours-band__axis {
  grid-column: 2;
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--gray);
  opacity: .7;
}

.page-contact .hours-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray);
}

/* ---------- 图片容器 ---------- */

.page-contact .shot {
  position: relative;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-contact .shot::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(98deg, rgba(61, 255, 166, .06) 0 1px, transparent 1px 22px);
  pointer-events: none;
  z-index: 1;
}

.page-contact .shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-contact .shot figcaption {
  position: relative;
  z-index: 1;
  padding: 12px 16px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--gray);
  border-top: 1px solid var(--line);
  background: rgba(8, 13, 22, .7);
}

/* ---------- 来信准备 ---------- */

.page-contact .brief {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--divider);
}

.page-contact .brief__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 22px 0;
  border-bottom: 1px solid var(--divider);
}

.page-contact .brief__no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--green);
  line-height: 1.8;
}

.page-contact .brief__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
}

.page-contact .brief__text {
  margin: 0;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--gray);
}

/* ---------- 受理流程 ---------- */

.page-contact .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--s4);
}

.page-contact .flow__item {
  position: relative;
  padding-left: 56px;
}

.page-contact .flow__item::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 46px;
  bottom: -30px;
  width: 1px;
  background: linear-gradient(180deg, var(--divider), transparent);
}

.page-contact .flow__item:last-child::before { display: none; }

.page-contact .flow__node {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--green);
  background: var(--green-soft);
  border: 1px solid var(--green-line);
  border-radius: 12px;
}

.page-contact .flow__title {
  margin: 6px 0 6px;
  font-size: 17px;
  font-weight: 700;
}

.page-contact .flow__text {
  margin: 0;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--gray);
}

/* ---------- 合作 ---------- */

.page-contact .partners {
  display: grid;
  gap: var(--s4);
}

.page-contact .partner {
  position: relative;
  padding-top: 20px;
  border-top: 2px solid var(--line);
}

.page-contact .partner::before {
  content: "";
  position: absolute;
  left: 0;
  top: -2px;
  width: 44px;
  height: 2px;
  background: var(--cyan);
}

.page-contact .partner:nth-child(2)::before { background: var(--green); }
.page-contact .partner:nth-child(3)::before { background: var(--orange); }

.page-contact .partner__type {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-contact .partner__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
}

.page-contact .partner__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--gray);
}

.page-contact .partner-cta {
  margin: var(--s4) 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}

.page-contact .partner-cta a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
}

.page-contact .partner-cta a:hover { color: var(--green); border-color: var(--green-line); }

/* ---------- 底部信息带 ---------- */

.page-contact .contact-foot {
  position: relative;
  padding: clamp(32px, 4.5vw, 52px) 0;
  border-top: 1px solid var(--divider);
  background: var(--panel);
}

.page-contact .contact-foot::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--green) 45%, var(--orange));
  opacity: .7;
}

.page-contact .foot-title {
  margin: 0 0 18px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--white);
}

.page-contact .foot-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px 44px;
}

.page-contact .foot-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}

.page-contact .foot-key {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gray);
}

.page-contact .foot-val {
  font-size: 14px;
  color: var(--white);
}

.page-contact .foot-note {
  margin: 18px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--gray);
}

.page-contact .foot-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
}

.page-contact .foot-note a:hover { color: var(--green); border-color: var(--green-line); }

/* ---------- 平板 / 桌面 ---------- */

@media (min-width: 720px) {
  .page-contact .brief {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--s5);
  }
}

@media (min-width: 800px) {
  .page-contact .partners {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--s4);
  }
}

@media (min-width: 900px) {
  .page-contact .ask {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
}

@media (min-width: 920px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(220px, .7fr);
    gap: var(--s5);
    align-items: flex-end;
  }

  .page-contact .hero-side {
    justify-content: flex-end;
  }
}

/* ---------- 窄屏收敛 ---------- */

@media (max-width: 700px) {
  .page-contact .hero-side .annot--vertical { display: none; }
  .page-contact .hero-side { align-items: center; }
}

@media (max-width: 540px) {
  .page-contact .hours-band {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 10px;
  }

  .page-contact .hours-band__cell {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .page-contact .hours-band__val { justify-self: start; }

  .page-contact .hours-band__axis { grid-column: 2; }

  .page-contact .flow__item { padding-left: 48px; }
  .page-contact .flow__node { width: 34px; height: 34px; border-radius: 10px; }
  .page-contact .flow__item::before { left: 16px; }
}

/* ---------- 动效兼容 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .ask__item,
  .page-contact .ask__sum::after {
    transition: none;
  }

  .page-contact .channel:hover { transform: none; }
}
</