/* ==========================================================================
   PG娱乐中心 · /assets/site.css
   深墨蓝控制台风格 —— 锐利直角、精密网格、珠宝色分区
   ========================================================================== */

/* 1. reset ---------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-space) + 16px);
}

body { margin: 0; }

img, svg, video { display: block; max-width: 100%; height: auto; }

button, input, select, textarea { font: inherit; color: inherit; }

button { background: none; border: 0; padding: 0; }

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

ul, ol { margin: 0; padding: 0; list-style: none; }

p { margin: 0; }

h1, h2, h3, h4, h5, h6 { margin: 0; }

dl, dd { margin: 0; }

hr { border: 0; border-top: 1px solid var(--line); margin: 0; }

:where(h1, h2, h3, h4, p, li, dd) { overflow-wrap: break-word; }

/* 2. tokens --------------------------------------------------------------- */
:root {
  /* 色板 */
  --ink: #0B1626;
  --panel: #122238;
  --cyan: #24E0D6;
  --orange: #FF7A29;
  --gold: #F5C451;
  --mist: #EAF1F8;
  --haze: #9DB2C7;
  --line: #1E3550;
  --green: #2FD07B;
  --crimson: #FF5468;
  --paper: #F4F7FA;
  --end: #06101C;

  /* 派生 */
  --line-soft: rgba(30, 53, 80, .6);
  --cyan-soft: rgba(36, 224, 214, .10);
  --cyan-edge: rgba(36, 224, 214, .38);
  --ink-on-color: #06101C;

  /* 字体 */
  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  /* 尺度 */
  --shell: 1220px;
  --r-0: 0px;
  --r-pill: 999px;
  --header-space: 100px;
  --grid-step: 80px;
}

/* 3. base typography ------------------------------------------------------ */
body {
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 450;
  line-height: 1.75;
  color: var(--mist);
  background-color: var(--ink);
  background-image:
    linear-gradient(rgba(30, 53, 80, .34) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 53, 80, .34) 1px, transparent 1px),
    radial-gradient(900px 520px at 88% -8%, rgba(36, 224, 214, .12), transparent 62%),
    radial-gradient(760px 480px at 2% 2%, rgba(255, 122, 41, .10), transparent 62%);
  background-size: var(--grid-step) var(--grid-step), var(--grid-step) var(--grid-step), 100% 100%, 100% 100%;
  background-attachment: fixed;
  padding-block-start: var(--header-space);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--mist);
}

h1 {
  font-weight: 900;
  font-size: clamp(2.1rem, 5.2vw, 3.6rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.4rem, 3vw, 2.05rem);
  letter-spacing: -0.015em;
}

h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }

h4 { font-size: 1.02rem; font-weight: 700; }

p + p { margin-block-start: .85em; }

::selection { background: var(--cyan); color: var(--ink-on-color); }

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* 4. layout --------------------------------------------------------------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: clamp(16px, 3vw, 28px);
}

.section { padding-block: clamp(40px, 6vw, 84px); }

.band {
  border-block: 1px solid var(--line);
  background: rgba(18, 34, 56, .55);
}

.band--panel { background: var(--panel); }

.band--paper {
  background: var(--paper);
  color: var(--ink);
  border-color: rgba(11, 22, 38, .12);
}

.band--paper h1,
.band--paper h2,
.band--paper h3,
.band--paper h4 { color: var(--ink); }

.band--edge {
  background: linear-gradient(90deg, rgba(36, 224, 214, .14), transparent 70%);
  border-inline-start: 3px solid var(--cyan);
}

.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--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.split {
  display: grid;
  gap: clamp(20px, 3.4vw, 52px);
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  align-items: start;
}

.split--reverse { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }

/* 5. components ----------------------------------------------------------- */
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-0);
  padding: clamp(18px, 2.4vw, 30px);
}

.panel--lift { transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease; }

.panel--lift:hover {
  transform: translateY(-4px);
  border-color: var(--cyan-edge);
  box-shadow: 0 22px 42px -30px rgba(0, 0, 0, .95);
}

.card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 16px;
  margin-block-end: 12px;
}

.mono {
  font-family: var(--font-mono);
  font-size: .82em;
  letter-spacing: .02em;
  font-variant-numeric: tabular-nums;
}

.num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--gold);
  letter-spacing: .01em;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--line);
  background: rgba(11, 22, 38, .55);
  color: var(--haze);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .05em;
  white-space: nowrap;
}

.tag--cyan { color: var(--cyan); border-color: var(--cyan-edge); background: var(--cyan-soft); }
.tag--orange { color: var(--orange); border-color: rgba(255, 122, 41, .4); background: rgba(255, 122, 41, .1); }
.tag--gold { color: var(--gold); border-color: rgba(245, 196, 81, .42); background: rgba(245, 196, 81, .1); }
.tag--green { color: var(--green); border-color: rgba(47, 208, 123, .4); background: rgba(47, 208, 123, .1); }
.tag--crimson { color: var(--crimson); border-color: rgba(255, 84, 104, .42); background: rgba(255, 84, 104, .1); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-0);
  background: var(--panel);
  color: var(--mist);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .01em;
  cursor: pointer;
  transition: transform .18s ease, border-color .18s ease, background .18s ease, color .18s ease;
}

.btn:hover { transform: translateY(-2px); border-color: var(--cyan-edge); }

.btn--cyan { background: var(--cyan); border-color: var(--cyan); color: var(--ink-on-color); }
.btn--orange { background: var(--orange); border-color: var(--orange); color: #1A0D02; }
.btn--ghost { background: transparent; color: var(--cyan); border-color: var(--cyan-edge); }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--haze);
}

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

.breadcrumb li + li::before {
  content: "/";
  color: var(--line);
}

.breadcrumb a:hover { color: var(--cyan); }

.term {
  display: inline;
  padding: 0;
  border: 0;
  border-bottom: 1px dashed rgba(36, 224, 214, .4);
  background: none;
  color: inherit;
  font: inherit;
  text-align: inherit;
  cursor: help;
}

.term:hover { border-bottom-color: var(--cyan); }

.term[aria-expanded="true"] {
  background: rgba(36, 224, 214, .14);
  border-bottom-color: var(--cyan);
}

[data-term-note] {
  display: none;
  margin-block: 8px;
  padding: 10px 14px;
  border-inline-start: 2px solid var(--cyan);
  background: rgba(36, 224, 214, .07);
  color: var(--haze);
  font-size: 15px;
}

[data-term-note][data-open] { display: block; }

/* 图片容器（供页面阶段放置图片） */
.frame {
  position: relative;
  overflow: hidden;
  display: block;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-0);
  aspect-ratio: 16 / 10;
}

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

.frame--wide { aspect-ratio: 21 / 9; }
.frame--tall { aspect-ratio: 4 / 5; }

.frame--screen {
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(180deg, rgba(36, 224, 214, .08), transparent 45%),
    repeating-linear-gradient(180deg, rgba(30, 53, 80, .7) 0 1px, transparent 1px 26px),
    var(--panel);
}

.frame__tag {
  position: absolute;
  inset-block-end: 10px;
  inset-inline-start: 10px;
  padding: 3px 8px;
  background: rgba(6, 16, 28, .86);
  border: 1px solid var(--line);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
}

/* 6. header --------------------------------------------------------------- */
.skip-link {
  position: fixed;
  inset-block-start: 10px;
  inset-inline-start: 10px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--cyan);
  color: var(--ink-on-color);
  font-size: 14px;
  font-weight: 700;
  transform: translateY(-180%);
  transition: transform .2s ease;
}

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

.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 90;
  padding: 14px clamp(12px, 2.4vw, 28px) 0;
}

.header-shell {
  position: relative;
  max-width: var(--shell);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.4vw, 20px);
  padding: 9px clamp(12px, 1.6vw, 20px);
  background: linear-gradient(180deg, rgba(18, 34, 56, .95), rgba(11, 22, 38, .9));
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  backdrop-filter: blur(12px) saturate(1.15);
  box-shadow: 0 22px 44px -34px rgba(0, 0, 0, .95);
  transition: padding .24s ease, border-color .24s ease, background .24s ease;
}

.brand-island {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  min-width: 0;
}

.brand-mark {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: end;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  background: rgba(36, 224, 214, .07);
}

.brand-mark__bar { display: block; width: 100%; background: var(--cyan); }
.brand-mark__bar:nth-child(1) { height: 42%; }
.brand-mark__bar:nth-child(2) { height: 72%; background: var(--orange); }
.brand-mark__bar:nth-child(3) { height: 100%; background: var(--gold); }

.brand-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--mist);
  white-space: nowrap;
}

.brand-note {
  font-size: 11px;
  letter-spacing: .05em;
  color: var(--haze);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: rgba(11, 22, 38, .7);
  color: var(--mist);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

.nav-toggle__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3px;
  width: 14px;
  height: 14px;
}

.nav-toggle__grid i { display: block; background: var(--cyan); }

.nav-toggle[aria-expanded="true"] .nav-toggle__grid i { background: var(--orange); }

.nav-toggle[aria-expanded="true"] { border-color: rgba(255, 122, 41, .45); }

.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  display: block;
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  color: var(--haze);
  font-size: 14.5px;
  font-weight: 500;
  white-space: nowrap;
  transition: color .18s ease, background .18s ease, border-color .18s ease;
}

.nav-link:hover { color: var(--mist); background: var(--cyan-soft); }

.nav-link[aria-current="page"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-on-color);
  font-weight: 700;
}

.header-cta {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 16px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(255, 255, 255, .16);
  background: linear-gradient(90deg, var(--orange), #FFA149);
  color: #1A0D02;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  transition: transform .18s ease, box-shadow .18s ease, padding .24s ease;
}

.header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 26px -18px rgba(255, 122, 41, .9);
}

.header-cta__dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  background: #1A0D02;
}

.header-cta__text { display: inline; }

.scroll-progress {
  position: absolute;
  inset-block-start: 0;
  inset-inline: 0;
  height: 2px;
  background: var(--line-soft);
  overflow: hidden;
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  height: 100%;
  width: var(--progress, 0%);
  background: linear-gradient(90deg, var(--cyan), var(--orange) 58%, var(--gold));
  transition: width .12s linear;
}

/* 收窄态 */
.site-header[data-condensed] .header-shell {
  padding-block: 5px;
  border-color: var(--cyan-edge);
  background: linear-gradient(180deg, rgba(9, 19, 32, .96), rgba(6, 16, 28, .92));
}

.site-header[data-condensed] .brand-note { display: none; }

.site-header[data-condensed] .header-cta { padding-inline: 12px; }

.site-header[data-condensed] .header-cta__text { display: none; }

.site-header[data-condensed] .header-cta__dot { width: 9px; height: 9px; }

/* 7. footer --------------------------------------------------------------- */
.site-footer {
  position: relative;
  margin-block-start: clamp(48px, 8vw, 110px);
  background: linear-gradient(180deg, var(--end), #04090f);
  border-block-start: 1px solid var(--line);
  color: var(--haze);
}

.footer-shell {
  max-width: var(--shell);
  margin-inline: auto;
  padding: clamp(34px, 5vw, 66px) clamp(16px, 3vw, 28px) 22px;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(250px, 1fr) minmax(0, 1.85fr);
  gap: clamp(24px, 4vw, 56px);
  padding-block-end: clamp(24px, 3.4vw, 42px);
  border-block-end: 1px solid var(--line-soft);
}

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

.footer-brand .brand-note { display: block; }

.brand-island--footer { align-items: flex-start; }

.footer-brandline {
  max-width: 40ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--haze);
}

.status-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.status-chip {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid var(--line);
  background: rgba(11, 22, 38, .7);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--haze);
}

.status-chip--cyan { color: var(--cyan); border-color: var(--cyan-edge); }
.status-chip--orange { color: var(--orange); border-color: rgba(255, 122, 41, .4); }
.status-chip--green { color: var(--green); border-color: rgba(47, 208, 123, .4); }
.status-chip--gold { color: var(--gold); border-color: rgba(245, 196, 81, .42); }

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 3vw, 40px);
}

.footer-col__title {
  margin-block-end: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--cyan);
}

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

.footer-link {
  display: inline-block;
  padding-block: 5px;
  font-size: 14.8px;
  color: var(--mist);
  opacity: .88;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease, opacity .18s ease;
}

.footer-link:hover {
  color: var(--cyan);
  opacity: 1;
  border-bottom-color: var(--cyan-edge);
}

.footer-contact {
  padding-block: clamp(20px, 3vw, 32px);
  border-block-end: 1px solid var(--line-soft);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px clamp(16px, 2.6vw, 32px);
}

.contact-item { display: flex; flex-direction: column; gap: 4px; }

.contact-item--wide { grid-column: 1 / -1; }

.contact-item__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--haze);
}

.contact-item__value {
  font-size: 14.5px;
  color: var(--mist);
}

.footer-note {
  margin-block-start: 16px;
  padding-inline-start: 12px;
  border-inline-start: 2px solid var(--orange);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--haze);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-block-start: 18px;
}

.footer-legal {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--haze);
}

.legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
}

.legal-links .footer-link { font-size: 13.5px; padding-block: 2px; }

.to-top {
  position: fixed;
  inset-inline-end: clamp(12px, 2.4vw, 28px);
  inset-block-end: clamp(14px, 2.4vw, 26px);
  z-index: 80;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 15px;
  border: 1px solid var(--line);
  background: rgba(18, 34, 56, .94);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .24s ease, transform .24s ease, visibility .24s, border-color .18s ease, color .18s ease;
}

.to-top[data-visible] { opacity: 1; visibility: visible; transform: none; }

.to-top:hover { border-color: var(--cyan-edge); color: var(--cyan); }

.to-top__arrow {
  width: 0;
  height: 0;
  border-inline: 5px solid transparent;
  border-bottom: 8px solid currentColor;
}

/* 8. 动效协议 -------------------------------------------------------------- */
html[data-js="on"] [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .38s ease, transform .38s ease;
}

html[data-js="on"] [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

[data-section-link] {
  transition: color .18s ease, border-color .18s ease;
  border-bottom: 1px solid transparent;
}

[data-section-link].is-active {
  color: var(--cyan);
  border-bottom-color: var(--cyan-edge);
}

/* 9. 响应式 --------------------------------------------------------------- */
@media (max-width: 1279px) {
  .brand-note { display: none; }
  .footer-brand .brand-note { display: block; }
}

@media (max-width: 1023px) {
  :root { --header-space: 88px; }

  .site-header { padding-block-start: 10px; }

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

  .site-nav {
    position: fixed;
    inset-inline: clamp(12px, 2.4vw, 28px);
    inset-block-start: calc(var(--header-space) - 14px);
    display: block;
    z-index: 95;
    padding: 8px;
    background: rgba(6, 16, 28, .98);
    border: 1px solid var(--line);
    border-block-start: 2px solid var(--cyan);
    box-shadow: 0 30px 60px -34px rgba(0, 0, 0, .98);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .2s ease, transform .2s ease, visibility .2s;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav-link {
    padding: 13px 14px;
    border-radius: var(--r-0);
    font-size: 16px;
    border-inline-start: 2px solid transparent;
  }

  .nav-link[aria-current="page"] {
    border-radius: var(--r-0);
    border-inline-start-color: var(--ink-on-color);
  }

  .header-cta { padding-inline: 13px; font-size: 13.5px; }

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

  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

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

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

@media (max-width: 767px) {
  body { font-size: 16.5px; }

  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: minmax(0, 1fr); }

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

@media (max-width: 639px) {
  .brand-text { display: none; }

  .footer-brand .brand-text { display: flex; }

  .header-cta { padding-inline: 12px; }

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

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

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

/* 10. 降低动效 ------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

  html[data-js="on"] [data-reveal] { opacity: 1; transform: none; }
}