/* ==== 子页设计系统 · shell 常量 ==== */
:root {
  --shell-header-h: 72px;
  --shell-z-header: 100;
  --shell-z-subnav: 60;
  --pg-width: 1120px;
  --pg-width-narrow: 860px;
  --pg-gap: clamp(18px, 2.4vw, 26px);
  --pg-sec-pad: clamp(56px, 7vw, 96px);
  --pg-hero-pad-top: clamp(124px, 19vh, 184px);
  --pg-hero-pad-bottom: clamp(44px, 6vw, 76px);
  --pg-card-pad: clamp(22px, 2.6vw, 28px);
  --pg-table-pad: 13px 18px;
  --pg-tl-rail: clamp(22px, 3vw, 34px);
  --pg-subnav-offset: calc(var(--shell-header-h) + 58px);
}

/* ==== 子页骨架 ==== */
body[data-page] {
  overflow-x: clip;
}

.pg-main {
  position: relative;
  z-index: 1;
}

.container--pg {
  max-width: var(--pg-width);
}

.container--pg-narrow {
  max-width: var(--pg-width-narrow);
}

.pg-noscript {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-alt);
  font-size: 14px;
  color: var(--ink-2);
}

.pg-noscript a {
  font-weight: 600;
  color: var(--accent-ink);
}

.pg-noscript a:hover {
  text-decoration: underline;
}

.pg-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ==== 页头 hero ==== */
.pg-hero {
  position: relative;
  overflow: hidden;
  padding-block: var(--pg-hero-pad-top) var(--pg-hero-pad-bottom);
  background-color: var(--bg);
  background-image:
    radial-gradient(720px 420px at 10% -14%, var(--glow-mint), transparent 68%),
    radial-gradient(620px 420px at 92% -6%, var(--glow-peri), transparent 70%);
  scroll-margin-top: var(--shell-header-h);
}

.pg-hero-grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: .5;
  background-image:
    radial-gradient(circle at center, rgba(217, 217, 217, .7) 0, rgba(217, 217, 217, .7) 3px, transparent 3px),
    linear-gradient(to right, transparent calc(50% - .5px), rgba(217, 217, 217, .55) calc(50% - .5px), rgba(217, 217, 217, .55) calc(50% + .5px), transparent calc(50% + .5px)),
    linear-gradient(to bottom, transparent calc(50% - .5px), rgba(217, 217, 217, .55) calc(50% - .5px), rgba(217, 217, 217, .55) calc(50% + .5px), transparent calc(50% + .5px));
  background-size: 62px 62px;
  -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;
}

.pg-hero-glow {
  position: absolute;
  top: -60px;
  right: -120px;
  z-index: 0;
  width: 460px;
  opacity: .4;
  filter: blur(130px);
  pointer-events: none;
}

.pg-hero-inner {
  position: relative;
  z-index: 1;
}

.pg-hero-title {
  margin-top: 18px;
  font-size: clamp(32px, 5.4vw, 62px);
  line-height: 1.16;
  letter-spacing: .04em;
  color: var(--ink-hero);
  animation: v4-rise .65s var(--ease) .06s both;
}

.pg-hero-line {
  display: block;
}

.pg-hero-sub {
  max-width: 46em;
  margin-top: 18px;
  font-size: clamp(14px, 1.6vw, 17px);
  line-height: 1.9;
  color: var(--ink-2);
  animation: v4-rise .65s var(--ease) .18s both;
}

.pg-hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(26px, 4vh, 36px);
  animation: v4-rise .65s var(--ease) .3s both;
}

.pg-hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
  animation: v4-rise .65s var(--ease) .4s both;
}

/* ==== 面包屑 ==== */
.pg-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ink-4);
  animation: v4-rise .6s var(--ease) both;
}

.pg-crumb a {
  color: var(--ink-3);
  transition: color .2s var(--ease);
}

.pg-crumb a:hover {
  color: var(--accent-ink);
}

.pg-crumb-sep {
  color: var(--line-strong);
}

.pg-crumb-cur {
  color: var(--accent-ink);
}

/* ==== 分类吸附导航 ==== */
.pg-subnav {
  position: sticky;
  top: var(--shell-header-h);
  z-index: var(--shell-z-subnav);
  border-block: 1px solid var(--line);
  background: var(--glass);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  backdrop-filter: blur(18px) saturate(1.4);
}

.pg-subnav-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-block: 11px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
}

.pg-subnav-inner::-webkit-scrollbar {
  display: none;
}

.pg-subnav-link {
  position: relative;
  flex: none;
  padding: 8px 16px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 13.5px;
  color: var(--ink-2);
  white-space: nowrap;
  transition: color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
}

.pg-subnav-link:hover {
  background: var(--panel-tint);
  color: var(--ink-1);
}

.pg-subnav-link.active {
  border-color: var(--accent-line);
  background: var(--chip-bg);
  color: var(--chip-ink);
  font-weight: 600;
}

/* ==== 区块与标题 ==== */
.pg-sec {
  padding-block: var(--pg-sec-pad);
  scroll-margin-top: var(--pg-subnav-offset);
}

.pg-sec--alt {
  background: var(--bg-alt);
}

.pg-sec--tint {
  position: relative;
  overflow: hidden;
  background: var(--bg);
}

.pg-sec--tint::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(720px 400px at 50% -14%, var(--glow-mint), transparent 70%);
  pointer-events: none;
}

.pg-sec--tint .container {
  position: relative;
  z-index: 1;
}

.pg-sec-head {
  max-width: 64ch;
  margin-bottom: clamp(28px, 4vw, 46px);
}

.pg-sec-head--center {
  margin-inline: auto;
  text-align: center;
}

.pg-sec-title {
  margin-top: 14px;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.26;
  letter-spacing: .05em;
}

.pg-sec-sub {
  margin-top: 12px;
  font-size: clamp(14px, 1.6vw, 16px);
  line-height: 1.85;
  color: var(--ink-2);
}

.pg-sec-action {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ==== 卡片网格 ==== */
.pg-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pg-gap);
}

.pg-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: var(--pg-card-pad);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease);
}

.pg-card:hover {
  transform: translateY(-5px);
  background: var(--panel-hover);
  border-color: var(--accent-line);
  box-shadow: var(--shadow-2);
}

.pg-card-k {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-4);
}

.pg-card-t {
  font-size: clamp(18px, 2.2vw, 21px);
  letter-spacing: .04em;
}

.pg-card-v {
  font-family: var(--font-mono);
  font-size: clamp(21px, 2.6vw, 28px);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
  color: var(--accent-ink);
}

.pg-card-v small {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-3);
}

.pg-card-d {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
}

.pg-card-more {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: auto;
  padding-top: 6px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--accent-ink);
}

.pg-card-more svg {
  transition: transform .25s var(--ease);
}

.pg-card:hover .pg-card-more svg {
  transform: translate(3px, -3px);
}

.pg-cards > .rv:nth-child(2) {
  --rv-delay: .08s;
}

.pg-cards > .rv:nth-child(3) {
  --rv-delay: .16s;
}

.pg-cards > .rv:nth-child(4) {
  --rv-delay: .24s;
}

.pg-cards > .rv:nth-child(5) {
  --rv-delay: .32s;
}

/* ==== 价格表 ==== */
.pg-table-card {
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
}

.pg-table-card + .pg-table-card {
  margin-top: var(--pg-gap);
}

.pg-table-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 20px;
  padding: 22px 24px 18px;
  border-bottom: 1px solid var(--line);
}

.pg-table-name {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: clamp(17px, 2.1vw, 22px);
  letter-spacing: .04em;
}

.pg-table-note {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-3);
}

.pg-table-scroll {
  overflow-x: auto;
  overscroll-behavior-x: contain;
  -webkit-overflow-scrolling: touch;
}

.pg-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14px;
}

.pg-table--wide {
  min-width: 760px;
}

.pg-table th,
.pg-table td {
  padding: var(--pg-table-pad);
  text-align: left;
  vertical-align: middle;
  border-bottom: 1px solid var(--line);
}

.pg-table thead th {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-3);
  white-space: nowrap;
  background: var(--panel-tint);
}

.pg-table tbody tr {
  transition: background .2s var(--ease);
}

.pg-table tbody tr:hover {
  background: var(--panel-tint);
}

.pg-table tbody tr:last-child th,
.pg-table tbody tr:last-child td {
  border-bottom: 0;
}

.pg-table tfoot td {
  padding: 14px 18px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  color: var(--ink-3);
}

.pg-th-key {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: none;
  color: var(--ink-1);
}

.pg-cell-key {
  font-weight: 700;
  color: var(--ink-1);
  white-space: nowrap;
}

.pg-cell-sub {
  display: block;
  margin-top: 3px;
  font-size: 12px;
  font-weight: 400;
  color: var(--ink-4);
}

.pg-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  color: var(--ink-2);
}

.pg-price {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  color: var(--accent-ink);
}

.pg-price-strike {
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-4);
  text-decoration: line-through;
}

.pg-table-foot {
  padding: 14px 24px 18px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--ink-3);
}

/* ==== 标签 ==== */
.pg-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--chip-bg);
  color: var(--chip-ink);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  white-space: nowrap;
}

.pg-tag--line {
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--ink-3);
}

.pg-tag--amber {
  background: rgba(201, 138, 30, .12);
  color: var(--status-amber);
}

/* ==== 要点列表 ==== */
.pg-points {
  display: grid;
  gap: 14px;
}

.pg-point {
  display: flex;
  gap: 13px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-2);
}

.pg-point::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  margin-top: .62em;
  border-radius: 2px;
  background: var(--mint);
  transform: rotate(45deg);
}

.pg-point strong {
  color: var(--ink-1);
}

.pg-list {
  display: grid;
  gap: 10px;
}

.pg-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-2);
}

.pg-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 9px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent-line);
}

/* ==== 双栏叙述 ==== */
.pg-split {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.pg-prose {
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--ink-2);
}

.pg-prose p + p {
  margin-top: 16px;
}

.pg-prose strong {
  color: var(--ink-1);
}

.pg-quote {
  padding-left: 18px;
  border-left: 3px solid var(--accent-ink);
  font-family: var(--font-display);
  font-size: clamp(17px, 2.2vw, 23px);
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--ink-1);
}

.pg-panel {
  padding: var(--pg-card-pad);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
}

.pg-panel--sunk {
  background: var(--panel-tint);
  box-shadow: none;
}

.pg-table-card + .pg-panel {
  margin-top: var(--pg-gap);
}

.pg-panel-title {
  font-size: clamp(17px, 2.1vw, 22px);
  letter-spacing: .04em;
}

.pg-panel .pg-points,
.pg-panel .pg-list {
  margin-top: 18px;
}

.pg-panel .pg-quote {
  margin-top: 22px;
}

/* ==== 使命愿景 ==== */
.pg-mission {
  padding: clamp(32px, 5vw, 60px) clamp(24px, 4vw, 48px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(560px 320px at 50% -20%, var(--glow-mint), transparent 70%),
    var(--panel);
  box-shadow: var(--shadow-1);
  text-align: center;
}

.pg-mission-k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--ink-4);
}

.pg-mission-t {
  margin-top: 16px;
  font-size: clamp(24px, 4.2vw, 46px);
  line-height: 1.32;
  letter-spacing: .05em;
}

.pg-mission-s {
  max-width: 32em;
  margin: 16px auto 0;
  font-size: clamp(14px, 1.8vw, 18px);
  line-height: 1.85;
  color: var(--ink-2);
}

.pg-values {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: clamp(24px, 3vw, 32px);
}

.pg-value {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 17px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--panel-tint);
  font-family: var(--font-display);
  font-size: 16.5px;
  letter-spacing: .06em;
  transition: border-color .25s var(--ease), background .25s var(--ease), color .25s var(--ease), transform .25s var(--ease);
}

.pg-value i {
  flex: none;
  width: 9px;
  height: 9px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--mint) 0%, var(--sky) 100%);
  transform: rotate(45deg);
}

.pg-value:hover {
  transform: translateY(-3px);
  background: var(--panel);
  border-color: var(--accent-line);
  color: var(--accent-ink);
}

/* ==== 里程碑时间线 ==== */
.pg-timeline {
  position: relative;
  display: grid;
  gap: clamp(20px, 2.6vw, 28px);
  padding-left: var(--pg-tl-rail);
}

.pg-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--mint) 0%, var(--peri) 54%, var(--sky) 100%);
  opacity: .6;
}

.pg-tl {
  position: relative;
  padding: 22px 24px 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}

.pg-tl::before {
  content: "";
  position: absolute;
  top: 28px;
  left: calc(2px - var(--pg-tl-rail));
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--mint);
  box-shadow: 0 0 0 4px var(--dot-ring);
}

.pg-tl:hover {
  transform: translateY(-4px);
  border-color: var(--accent-line);
  box-shadow: var(--shadow-2);
}

.pg-tl-year {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--accent-ink);
}

.pg-tl-name {
  margin-top: 6px;
  font-size: clamp(19px, 2.4vw, 25px);
  letter-spacing: .06em;
}

.pg-tl .pg-list {
  margin-top: 14px;
}

.pg-timeline > .rv:nth-child(2) {
  --rv-delay: .08s;
}

.pg-timeline > .rv:nth-child(3) {
  --rv-delay: .16s;
}

.pg-timeline > .rv:nth-child(4) {
  --rv-delay: .24s;
}

/* ==== 收尾 CTA ==== */
.pg-cta-note {
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ink-4);
}

/* ==== 响应式 ==== */
@media (min-width: 640px) {
  .pg-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pg-values {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .pg-split {
    grid-template-columns: 1.04fr .96fr;
  }

  .pg-cards--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .pg-cards--4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .pg-cards--5 {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .pg-values {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .pg-points--cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 44px;
  }
}

@media (max-width: 639px) {
  :root {
    --pg-table-pad: 12px 14px;
    --pg-card-pad: 20px;
  }

  .pg-table-head {
    padding: 18px 18px 15px;
  }

  .pg-table-foot {
    padding: 13px 18px 16px;
  }

  .pg-hero-cta .v4-btn {
    flex: 1 1 auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .pg-hero-title,
  .pg-hero-sub,
  .pg-hero-cta,
  .pg-hero-chips,
  .pg-crumb {
    animation: none;
  }

  .pg-card,
  .pg-tl,
  .pg-value,
  .pg-card-more svg {
    transition: none;
  }

  .pg-card:hover,
  .pg-tl:hover,
  .pg-value:hover {
    transform: none;
  }
}