/* ============================================================
   page-contact —— 咨询通道
   作用域全部限定在 .page-contact 内
   ============================================================ */

.page-contact {
  background-color: var(--ink);
  color: var(--text-ink);
  overflow-x: hidden;
}

/* ---------- 区块骨架 ---------- */
.page-contact .pc-sec {
  padding-block: clamp(2.5rem, 6vw, 4.75rem);
}

.page-contact .pc-sec--paper {
  background: var(--paper);
  color: var(--graphite);
}

.page-contact .pc-sec--ink2 {
  background: var(--ink-2);
  color: var(--text-ink);
}

.page-contact .pc-head {
  max-width: 70ch;
}

.page-contact .pc-head .eyebrow {
  color: var(--gold);
  letter-spacing: .16em;
}

.page-contact .pc-title {
  margin-top: .85rem;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--step-3);
  line-height: 1.26;
  letter-spacing: -.005em;
}

.page-contact .pc-sec--paper .pc-title {
  color: var(--ink);
}

.page-contact .pc-sec--ink2 .pc-title {
  color: var(--white);
}

.page-contact .pc-lede {
  margin-top: 1rem;
  font-size: var(--step-0);
  line-height: 1.9;
}

.page-contact .pc-sec--paper .pc-lede {
  color: var(--graphite);
}

.page-contact .pc-sec--ink2 .pc-lede {
  color: var(--text-ink);
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  position: relative;
  padding-block: clamp(1.75rem, 4vw, 2.75rem) clamp(2.5rem, 6vw, 4.5rem);
  background:
    radial-gradient(110% 82% at 84% -14%, rgba(201, 162, 77, .17), transparent 58%),
    radial-gradient(72% 56% at 2% 108%, rgba(95, 143, 124, .11), transparent 62%),
    var(--ink);
}

.page-contact .pc-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: center;
}

.page-contact .pc-hero h1 {
  margin-top: 1rem;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: var(--step-4);
  line-height: 1.18;
  letter-spacing: -.012em;
  color: var(--white);
}

.page-contact .pc-hero__lede {
  margin-top: 1.15rem;
  max-width: 44ch;
  font-size: var(--step-1);
  line-height: 1.85;
  color: var(--text-ink);
}

.page-contact .pc-hero__actions {
  margin-top: 1.85rem;
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

.page-contact .pc-hero__figure {
  margin: 0;
  border-radius: 6px;
  overflow: hidden;
}

.page-contact .pc-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

@media (min-width: 700px) {
  .page-contact .pc-hero h1 {
    font-size: var(--step-5);
  }
}

@media (min-width: 920px) {
  .page-contact .pc-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-contact .pc-hero__figure img {
    aspect-ratio: 9 / 7;
  }
}

@media (min-width: 1000px) {
  .page-contact .pc-hero h1 {
    font-size: var(--step-6);
  }
}

/* ---------- 通道卡阵列 ---------- */
.page-contact .pc-channels__grid {
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
}

.page-contact .pc-channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .6rem;
  padding: clamp(1.25rem, 3vw, 1.9rem);
  background: var(--white);
  border: 1px solid var(--line-dark);
  border-radius: 5px;
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}

.page-contact .pc-channel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 44px;
  height: 3px;
  background: var(--gold);
}

.page-contact .pc-channel:hover {
  transform: translateY(-3px);
  border-color: var(--gold);
  box-shadow: 0 16px 34px rgba(14, 17, 20, .12);
}

.page-contact .pc-channel__label {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: .14em;
  color: var(--gold);
}

.page-contact .pc-channel__value {
  font-family: var(--font-mono);
  font-size: clamp(1.02rem, 2.6vw, 1.3rem);
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .pc-channel--wide .pc-channel__value {
  font-family: var(--font-head);
  font-size: clamp(1.12rem, 2.4vw, 1.5rem);
  font-weight: 700;
  line-height: 1.6;
}

.page-contact .pc-channel__note {
  margin-top: auto;
  padding-top: .6rem;
  font-size: var(--step--1);
  line-height: 1.85;
  color: var(--graphite);
}

@media (min-width: 720px) {
  .page-contact .pc-channels__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .pc-channel--wide {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1060px) {
  .page-contact .pc-channels__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .pc-channel--wide {
    grid-column: span 2;
  }
}

/* ---------- 问题分类（可展开） ---------- */
.page-contact .pc-routes {
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
  border-top: 1px solid var(--line);
}

.page-contact .pc-route {
  border-bottom: 1px solid var(--line);
}

.page-contact .pc-route > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  padding: 1.15rem .25rem;
  cursor: pointer;
  list-style: none;
  transition: background-color .25s var(--ease), padding-left .25s var(--ease);
}

.page-contact .pc-route > summary::-webkit-details-marker {
  display: none;
}

.page-contact .pc-route > summary:hover {
  background: rgba(243, 237, 226, .05);
  padding-left: .8rem;
}

.page-contact .pc-route__idx {
  font-size: var(--step--1);
  letter-spacing: .12em;
  color: var(--gold);
}

.page-contact .pc-route__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--step-1);
  line-height: 1.5;
  color: var(--white);
}

.page-contact .pc-route__cue {
  position: relative;
  width: 16px;
  height: 16px;
}

.page-contact .pc-route__cue::before,
.page-contact .pc-route__cue::after {
  content: "";
  position: absolute;
  background: var(--gold);
  transition: transform .3s var(--ease);
}

.page-contact .pc-route__cue::before {
  left: 0;
  right: 0;
  top: 7px;
  height: 1.5px;
}

.page-contact .pc-route__cue::after {
  top: 0;
  bottom: 0;
  left: 7px;
  width: 1.5px;
}

.page-contact .pc-route[open] .pc-route__cue::after {
  transform: scaleY(0);
}

.page-contact .pc-route__body {
  display: grid;
  gap: .85rem;
  padding: .2rem 0 1.5rem 2.6rem;
}

.page-contact .pc-route__body p {
  max-width: 64ch;
  font-size: var(--step-0);
  line-height: 1.9;
  color: var(--text-ink);
}

.page-contact .pc-route__tip {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: .06em;
  color: var(--gold);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: .32rem .85rem;
}

@media (max-width: 560px) {
  .page-contact .pc-route__body {
    padding-left: 0;
  }
}

/* ---------- 准备信息清单 ---------- */
.page-contact .pc-prep__list {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  max-width: 880px;
}

.page-contact .pc-prep__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .95rem;
  align-items: start;
  padding-block: 1.05rem;
  border-bottom: 1px dashed rgba(14, 17, 20, .18);
}

.page-contact .pc-prep__item:first-child {
  border-top: 1px dashed rgba(14, 17, 20, .18);
}

.page-contact .pc-prep__box {
  width: 18px;
  height: 18px;
  margin-top: .3rem;
  border: 1.5px solid var(--gold);
  border-radius: 3px;
  background: linear-gradient(140deg, rgba(201, 162, 77, .18), rgba(201, 162, 77, 0));
}

.page-contact .pc-prep__text {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--step-0);
  line-height: 1.8;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .pc-prep__hint {
  display: block;
  margin-top: .35rem;
  font-family: var(--font-body);
  font-size: var(--step--1);
  line-height: 1.85;
  color: var(--graphite);
}

/* ---------- 处理流程 ---------- */
.page-contact .pc-flow__figure {
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  border-radius: 6px;
  overflow: hidden;
}

.page-contact .pc-flow__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-contact .pc-flow__scale {
  position: relative;
  margin: clamp(2rem, 4vw, 3rem) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.4rem;
}

.page-contact .pc-flow__step {
  position: relative;
  padding-left: 1.1rem;
  border-left: 2px solid var(--line-strong);
}

.page-contact .pc-flow__step::before {
  display: none;
}

.page-contact .pc-flow__idx {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: .16em;
  color: var(--gold);
}

.page-contact .pc-flow__title {
  margin-top: .5rem;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--step-2);
  line-height: 1.35;
  color: var(--white);
}

.page-contact .pc-flow__text {
  margin-top: .55rem;
  font-size: var(--step--1);
  line-height: 1.9;
  color: var(--text-ink);
}

.page-contact .pc-flow__extra {
  margin-top: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  line-height: 1.8;
  color: var(--celadon);
  transition: max-height .35s var(--ease), opacity .3s var(--ease), margin-top .3s var(--ease);
}

@media (hover: hover) {
  .page-contact .pc-flow__step:hover .pc-flow__extra,
  .page-contact .pc-flow__step:focus .pc-flow__extra {
    max-height: 6rem;
    opacity: 1;
    margin-top: .6rem;
  }
}

@media (hover: none) {
  .page-contact .pc-flow__extra {
    max-height: none;
    opacity: 1;
    margin-top: .6rem;
  }
}

@media (min-width: 880px) {
  .page-contact .pc-flow__scale {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--gap);
  }

  .page-contact .pc-flow__scale::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 6px;
    height: 1px;
    background: linear-gradient(90deg, var(--gold), rgba(201, 162, 77, .55) 62%, rgba(124, 135, 148, .35));
  }

  .page-contact .pc-flow__step {
    padding-left: 0;
    padding-top: 1.9rem;
    border-left: 0;
  }

  .page-contact .pc-flow__step::before {
    display: block;
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    background: var(--gold);
    box-shadow: 0 0 0 5px rgba(201, 162, 77, .14);
  }
}

/* ---------- 写法框架 ---------- */
.page-contact .pc-cases__grid {
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
}

.page-contact .pc-case {
  display: flex;
  flex-direction: column;
  gap: .9rem;
  padding: clamp(1.25rem, 3vw, 1.75rem);
  background: var(--white);
  border: 1px solid var(--line-dark);
  border-left: 3px solid var(--celadon);
  border-radius: 4px;
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}

.page-contact .pc-case:hover {
  transform: translateY(-2px);
  border-color: var(--celadon);
}

.page-contact .pc-case__tag {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: .12em;
  color: var(--celadon);
}

.page-contact .pc-case__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--step-1);
  line-height: 1.45;
  color: var(--ink);
}

.page-contact .pc-case__lines {
  display: grid;
  gap: .55rem;
}

.page-contact .pc-case__line {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .65rem;
  font-size: var(--step--1);
  line-height: 1.85;
  color: var(--graphite);
}

.page-contact .pc-case__line b {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--ink);
  white-space: nowrap;
}

@media (min-width: 820px) {
  .page-contact .pc-cases__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 站点信息与相关页面 ---------- */
.page-contact .pc-record__grid {
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}

.page-contact .pc-record__item {
  display: grid;
  gap: .45rem;
  padding: 1.15rem 1.25rem;
  background: var(--ink-2);
}

.page-contact .pc-record__key {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: .12em;
  color: var(--steel);
}

.page-contact .pc-record__val {
  font-family: var(--font-mono);
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--white);
  word-break: break-word;
}

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

@media (min-width: 1000px) {
  .page-contact .pc-record__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-contact .pc-links {
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
  padding: 1.5rem 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .25rem;
}

.page-contact .pc-links a {
  display: flex;
  align-items: baseline;
  gap: .75rem;
  padding: .7rem .25rem;
  font-size: var(--step-0);
  color: var(--text-ink);
  text-decoration: none;
  border-bottom: 1px dashed rgba(231, 206, 147, .18);
  transition: color .25s var(--ease), padding-left .25s var(--ease);
}

.page-contact .pc-links a:hover {
  color: var(--gold);
  padding-left: .6rem;
}

.page-contact .pc-links .mono {
  font-size: var(--step--1);
  color: var(--gold);
}

@media (min-width: 700px) {
  .page-contact .pc-links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-channel,
  .page-contact .pc-route > summary,
  .page-contact .pc-route__cue::before,
  .page-contact .pc-route__cue::after,
  .page-contact .pc-flow__extra,
  .page-contact .pc-case,
  .page-contact .pc-links a {
    transition: none;
  }

  .page-contact .pc-channel:hover,
  .page-contact .pc-case:hover {
    transform: none;
  }
}