/* =========================================================
   PG娱乐中心 · 共享样式 /assets/site.css
   ========================================================= */

/* ---------- reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }

img, picture, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

/* ---------- tokens ---------- */
:root {
  --ink: #0B1026;
  --ink-deep: #05060F;
  --ink-card: #1A1D2E;
  --violet: #7B2FF7;
  --violet-soft: #D9C8FF;
  --bolt: #FFD23F;
  --mint: #2EE6A8;
  --cream: #F5F1E8;
  --stone: #8A8F98;
  --moss: #5E7A5A;
  --clay: #B86B4B;

  --line: rgba(245, 241, 232, 0.13);
  --line-strong: rgba(245, 241, 232, 0.30);

  --rail: 268px;
  --gutter: clamp(18px, 4vw, 40px);
  --radius: 3px;
  --shadow: 0 6px 20px rgba(4, 6, 18, 0.45);

  --font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --ease: cubic-bezier(0.22, 0.68, 0.24, 1);
  --progress: 0;
}

/* ---------- base ---------- */
body {
  min-height: 100dvh;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.7;
  letter-spacing: 0.01em;
  color: var(--cream);
  background-color: var(--ink);
  background-image:
    radial-gradient(1100px 560px at 88% -8%, rgba(123, 47, 247, 0.22), transparent 62%),
    radial-gradient(820px 620px at 4% 108%, rgba(46, 230, 168, 0.07), transparent 60%);
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--violet);
  color: var(--cream);
}

:focus-visible {
  outline: 2px solid var(--bolt);
  outline-offset: 3px;
  border-radius: 2px;
}

#main-content {
  display: block;
  min-height: 60vh;
}

/* ---------- skip link ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 300;
  padding: 10px 16px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: #0B1026;
  background: var(--bolt);
  border-radius: 2px;
  transform: translateY(-180%);
  transition: transform 0.16s var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: none;
}

/* =========================================================
   头部 · 左侧轨道
   ========================================================= */
.site-header {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 60;
  display: flex;
  width: var(--rail);
  padding: 26px 20px 22px;
  overflow: hidden;
  background: linear-gradient(180deg, #12183A 0%, #0B1026 45%, #080B1C 100%);
  border-right: 1px solid var(--line);
}

.site-header::before {
  content: "";
  position: absolute;
  right: -46px;
  bottom: -40px;
  z-index: 0;
  width: 190px;
  height: 290px;
  background: linear-gradient(165deg, rgba(123, 47, 247, 0.9), rgba(123, 47, 247, 0) 78%);
  clip-path: polygon(56% 0, 100% 0, 52% 44%, 84% 44%, 26% 100%, 40% 52%, 0 52%);
  opacity: 0.42;
  pointer-events: none;
}

.rail-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 24px;
  width: 100%;
  min-height: 100%;
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 2px 0 4px;
}

.brand-bolt {
  flex: 0 0 auto;
  width: 24px;
  height: 32px;
  background: linear-gradient(160deg, var(--bolt), #FFA93F);
  clip-path: polygon(58% 0, 100% 0, 54% 44%, 86% 44%, 26% 100%, 40% 52%, 0 52%);
  filter: drop-shadow(0 0 10px rgba(255, 210, 63, 0.35));
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.18;
}

.brand-name {
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.brand-tag {
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--stone);
}

/* 移动端按钮 */
.nav-toggle {
  position: relative;
  z-index: 90;
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cream);
  background: rgba(26, 29, 46, 0.7);
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  transition: border-color 0.16s var(--ease), background-color 0.16s var(--ease);
}

.nav-toggle:hover,
.nav-toggle[aria-expanded="true"] {
  border-color: var(--bolt);
  background: rgba(123, 47, 247, 0.22);
}

.nav-toggle-icon {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--bolt);
  transition: transform 0.16s var(--ease), top 0.16s var(--ease);
}

.nav-toggle-icon::before { top: 1px; }
.nav-toggle-icon::after { top: 9px; }

.site-header[data-open] .nav-toggle-icon::before {
  top: 5px;
  transform: rotate(45deg);
}

.site-header[data-open] .nav-toggle-icon::after {
  top: 5px;
  transform: rotate(-45deg);
}

/* 导航 */
.site-nav {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 18px;
  min-height: 0;
}

.nav-eyebrow {
  padding-left: 10px;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--stone);
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item { min-width: 0; }

.nav-link {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 14px;
  align-items: center;
  gap: 8px;
  padding: 11px 10px;
  font-size: 15px;
  color: var(--stone);
  border-left: 2px solid transparent;
  border-radius: 0 2px 2px 0;
  transition:
    color 0.16s var(--ease),
    background-color 0.16s var(--ease),
    border-color 0.16s var(--ease);
}

.nav-link::after {
  content: "";
  width: 10px;
  height: 14px;
  background: var(--bolt);
  clip-path: polygon(58% 0, 100% 0, 54% 44%, 86% 44%, 26% 100%, 40% 52%, 0 52%);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.16s var(--ease), transform 0.16s var(--ease);
}

.nav-index {
  font-size: 11px;
  letter-spacing: 0.14em;
  font-variant-numeric: tabular-nums;
  opacity: 0.8;
}

.nav-label {
  font-weight: 500;
  letter-spacing: 0.01em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--cream);
  background: rgba(123, 47, 247, 0.16);
  border-left-color: var(--violet);
}

.nav-link:hover::after,
.nav-link:focus-visible::after {
  opacity: 1;
  transform: none;
}

.nav-link[aria-current="page"] {
  color: var(--cream);
  background: linear-gradient(90deg, rgba(123, 47, 247, 0.34), rgba(123, 47, 247, 0));
  border-left-color: var(--bolt);
}

.nav-link[aria-current="page"] .nav-index {
  color: var(--bolt);
  opacity: 1;
}

.nav-link[aria-current="page"]::after {
  opacity: 1;
  transform: none;
}

.nav-foot {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.nav-cta { width: 100%; }

.nav-note {
  font-size: 12px;
  line-height: 1.65;
  color: var(--stone);
}

/* 滚动进度 */
.rail-progress {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 3;
  width: 3px;
  background: rgba(245, 241, 232, 0.07);
  pointer-events: none;
}

.rail-progress-fill {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleY(var(--progress));
  transform-origin: top center;
  background: linear-gradient(180deg, var(--bolt), var(--violet));
  box-shadow: 0 0 12px rgba(255, 210, 63, 0.45);
}

/* =========================================================
   通用内容组件
   ========================================================= */
.container {
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  padding-block: clamp(42px, 7vw, 88px);
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 64ch;
  margin-bottom: clamp(22px, 3vw, 36px);
}

.section-num {
  display: block;
  font-size: clamp(38px, 5vw, 68px);
  font-weight: 200;
  line-height: 1;
  letter-spacing: -0.02em;
  color: rgba(217, 200, 255, 0.22);
  -webkit-text-stroke: 1px rgba(217, 200, 255, 0.28);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--violet-soft);
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 12px;
  background: var(--bolt);
  clip-path: polygon(58% 0, 100% 0, 54% 44%, 86% 44%, 26% 100%, 40% 52%, 0 52%);
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--cream);
}

.lede {
  max-width: 58ch;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.75;
  color: rgba(245, 241, 232, 0.78);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.rule {
  height: 1px;
  border: 0;
  background: var(--line);
}

.note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone);
}

/* 网格 */
.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.grid--split {
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  align-items: start;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--cream);
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  transition:
    background-color 0.16s var(--ease),
    border-color 0.16s var(--ease),
    color 0.16s var(--ease),
    transform 0.16s var(--ease);
}

.btn:hover,
.btn:focus-visible {
  border-color: var(--violet-soft);
  background: rgba(123, 47, 247, 0.18);
  transform: translateX(2px);
}

.btn--bolt {
  font-weight: 700;
  color: #0B1026;
  background: var(--bolt);
  border-color: var(--bolt);
}

.btn--bolt:hover,
.btn--bolt:focus-visible {
  color: #0B1026;
  background: #FFE27A;
  border-color: #FFE27A;
}

.btn--ghost {
  color: var(--violet-soft);
  border-color: rgba(217, 200, 255, 0.34);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  color: var(--cream);
  background: rgba(123, 47, 247, 0.22);
  border-color: var(--violet-soft);
}

/* 档案卡 */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--ink-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: border-color 0.16s var(--ease), transform 0.16s var(--ease);
}

.card:hover {
  border-color: rgba(123, 47, 247, 0.55);
  transform: translateY(-2px);
}

.archive-card {
  border-left: 3px solid var(--violet);
}

.archive-card:hover {
  border-left-color: var(--bolt);
}

.card-index {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.card-title {
  font-size: 19px;
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.card-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--stone);
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--stone);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
}

.tag--mint {
  color: var(--mint);
  border-color: rgba(46, 230, 168, 0.45);
  background: rgba(46, 230, 168, 0.08);
}

.tag--bolt {
  color: var(--bolt);
  border-color: rgba(255, 210, 63, 0.45);
  background: rgba(255, 210, 63, 0.08);
}

/* 面包屑 */
.breadcrumb {
  padding-block: clamp(16px, 3vw, 26px);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--stone);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: rgba(138, 143, 152, 0.6);
}

.breadcrumb-link {
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.breadcrumb-link:hover,
.breadcrumb-link:focus-visible {
  color: var(--cream);
  border-bottom-color: var(--violet);
}

.breadcrumb-current { color: var(--violet-soft); }

/* 图片容器 */
.media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background-color: var(--ink-card);
  background-image: linear-gradient(150deg, rgba(123, 47, 247, 0.30), rgba(11, 16, 38, 0.92) 62%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.media::after {
  content: "";
  position: absolute;
  right: -8%;
  bottom: -28%;
  width: 54%;
  height: 82%;
  background: linear-gradient(160deg, rgba(255, 210, 63, 0.20), transparent 72%);
  clip-path: polygon(56% 0, 100% 0, 52% 44%, 84% 44%, 26% 100%, 40% 52%, 0 52%);
  pointer-events: none;
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }

.media-caption {
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--stone);
}

/* 列表与行内链接 */
.list-bolt {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.list-bolt li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(245, 241, 232, 0.82);
}

.list-bolt li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 8px;
  height: 12px;
  background: var(--bolt);
  clip-path: polygon(58% 0, 100% 0, 54% 44%, 86% 44%, 26% 100%, 40% 52%, 0 52%);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 2px;
  font-size: 14px;
  color: var(--violet-soft);
  border-bottom: 1px solid rgba(217, 200, 255, 0.3);
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.link-arrow::after {
  content: "\2192";
  transition: transform 0.16s var(--ease);
}

.link-arrow:hover,
.link-arrow:focus-visible {
  color: var(--cream);
  border-bottom-color: var(--bolt);
}

.link-arrow:hover::after,
.link-arrow:focus-visible::after {
  transform: translateX(3px);
}

/* =========================================================
   页脚
   ========================================================= */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 9vw, 110px);
  padding: clamp(36px, 6vw, 64px) 0 28px;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(11, 16, 38, 0) 0%, #080B1C 42%, var(--ink-deep) 100%);
  border-top: 1px solid var(--line);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--violet), var(--bolt) 38%, rgba(255, 210, 63, 0) 82%);
}

.footer-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: clamp(26px, 4vw, 42px);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1.15fr;
  gap: clamp(20px, 3vw, 36px);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.footer-brand .brand-bolt {
  width: 22px;
  height: 30px;
}

.footer-brand-line {
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.footer-note {
  max-width: 30ch;
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone);
}

.footer-group { min-width: 0; }

.footer-title {
  margin-bottom: 14px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--bolt);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-link {
  display: inline-block;
  padding: 2px 0;
  font-size: 14px;
  color: var(--stone);
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--cream);
  border-bottom-color: var(--violet);
}

.footer-link[aria-current="page"] {
  color: var(--mint);
  border-bottom-color: rgba(46, 230, 168, 0.4);
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-contact-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-contact-key {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--stone);
}

.footer-contact-value {
  font-size: 15px;
  letter-spacing: 0.01em;
  color: var(--cream);
  word-break: break-word;
}

.footer-contact-note {
  margin-top: 14px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--stone);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  padding-top: 20px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--stone);
  border-top: 1px solid var(--line);
}

.footer-copy,
.footer-icp { margin: 0; }

/* =========================================================
   响应式 · 桌面轨道
   ========================================================= */
@media (min-width: 1080px) {
  body { padding-left: var(--rail); }
}

/* =========================================================
   响应式 · 平板与手机
   ========================================================= */
@media (max-width: 1079px) {
  body {
    padding-left: 0;
    font-size: 16.5px;
  }

  .site-header {
    position: sticky;
    inset: auto;
    top: 0;
    width: 100%;
    height: auto;
    min-height: 60px;
    padding: 12px 18px;
    align-items: center;
    overflow: visible;
    background: rgba(11, 16, 38, 0.94);
    border-right: 0;
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(12px);
  }

  .site-header::before { display: none; }

  .rail-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    min-height: 0;
  }

  .brand { padding: 0; }

  .brand-bolt {
    width: 20px;
    height: 26px;
  }

  .brand-name { font-size: 16px; }

  .brand-tag { display: none; }

  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: auto;
    z-index: 80;
    display: flex;
    flex-direction: column;
    gap: 16px;
    width: min(88vw, 360px);
    padding: 74px 20px 28px;
    overflow-y: auto;
    background: linear-gradient(180deg, #131A3D 0%, #0A0E22 100%);
    border-left: 1px solid var(--line-strong);
    transform: translateX(102%);
    transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
  }

  .site-header[data-open] .site-nav {
    transform: none;
    box-shadow: 0 0 0 100vmax rgba(6, 9, 22, 0.74);
  }

  html.is-nav-open,
  html.is-nav-open body {
    overflow: hidden;
  }

  .nav-eyebrow { padding-left: 0; }

  .nav-link {
    grid-template-columns: 34px minmax(0, 1fr) 16px;
    padding: 14px 12px;
    font-size: 17px;
    border-left-width: 2px;
  }

  .nav-index { font-size: 12px; }

  .nav-foot {
    margin-top: 8px;
  }

  .rail-progress {
    top: auto;
    right: 0;
    bottom: -1px;
    left: 0;
    width: auto;
    height: 2px;
  }

  .rail-progress-fill {
    transform: scaleX(var(--progress));
    transform-origin: left center;
    background: linear-gradient(90deg, var(--bolt), var(--violet));
  }
}

@media (max-width: 900px) {
  .footer-top {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
  }

  .footer-brand { grid-column: 1 / -1; }

  .grid--split { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 860px) {
  .grid--2,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 560px) {
  .footer-top { grid-template-columns: minmax(0, 1fr); }

  .footer-legal {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn {
    width: 100%;
    padding: 13px 18px;
  }

  .nav-cta { width: 100%; }
}

/* =========================================================
   低动效偏好
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .btn:hover,
  .btn:focus-visible,
  .card:hover {
    transform: none;
  }

  .nav-link::after {
    transition: none;
  }
}