/* =========================================================
   hg8868皇冠 · 共享样式表 /assets/site.css
   ========================================================= */

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

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

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

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

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

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

button { background: none; border: 0; }

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

table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink: #0B3D2E;
  --ink-deep: #07261D;
  --ink-raise: #0E4A38;

  --gold: #D4AF37;
  --gold-soft: #F2D77C;
  --copper: #8C6F2F;

  --orange: #FF6B35;
  --blue: #1E5AA8;
  --cyan: #7FD8C4;

  --paper: #F4F1E8;
  --muted: #A8B8AE;
  --danger: #D94A3D;

  --line: rgba(140, 111, 47, .55);
  --line-soft: rgba(168, 184, 174, .18);
  --line-blue: rgba(30, 90, 168, .45);

  --font-display: "Oswald", "Bebas Neue", "PingFang SC", "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", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --wrap: 1320px;
  --gutter: clamp(16px, 3.2vw, 40px);
  --header-h: 76px;
  --cut-s: 12px;
  --cut-m: 20px;
  --cut-l: 24px;

  --shadow-panel: 0 20px 42px -26px rgba(0, 0, 0, .9);
  --ease: cubic-bezier(.22, .7, .28, 1);
}

html { scroll-behavior: smooth; }

/* ---------- 3. 基底与中文排版 ---------- */
body {
  min-height: 100vh;
  background:
    radial-gradient(1100px 560px at 84% -12%, rgba(30, 90, 168, .22), transparent 62%),
    radial-gradient(880px 480px at 6% 4%, rgba(212, 175, 55, .10), transparent 60%),
    linear-gradient(180deg, #0B3D2E 0%, #0A3527 44%, #07261D 100%);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: .01em;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    repeating-linear-gradient(115deg, rgba(255, 255, 255, .016) 0 2px, transparent 2px 9px),
    radial-gradient(circle at 78% 14%, rgba(255, 107, 53, .10), transparent 42%),
    radial-gradient(circle at 12% 78%, rgba(127, 216, 196, .07), transparent 46%);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -.005em;
  color: var(--paper);
}

h1 { font-size: clamp(2rem, 5.2vw, 3.6rem); }

::selection { background: rgba(255, 107, 53, .42); color: #fff; }

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

a:hover { color: var(--gold-soft); }

/* ---------- 4. 通用工具 ---------- */
.container {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -70px;
  z-index: 200;
  padding: 10px 18px;
  background: linear-gradient(135deg, var(--gold), var(--orange));
  color: #08221A;
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: .06em;
  transition: top .2s var(--ease);
}

.skip-link:focus { top: 12px; color: #08221A; }

.num,
.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

.lede {
  max-width: 62ch;
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.8;
  color: rgba(244, 241, 232, .86);
}

.prose {
  max-width: 74ch;
  color: rgba(244, 241, 232, .9);
}

.prose p { margin-bottom: 1.1em; }

.prose h3 {
  margin: 1.7em 0 .6em;
  font-size: 1.18rem;
  letter-spacing: .02em;
}

.prose a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(127, 216, 196, .35);
}

.prose ul { margin: 0 0 1.1em 1.1em; list-style: square; }

.prose li { margin-bottom: .4em; }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid transparent;
  background: linear-gradient(135deg, var(--gold) 0%, #E9C554 46%, var(--orange) 100%);
  color: #08221A;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: .05em;
  white-space: nowrap;
  cursor: pointer;
  clip-path: polygon(var(--cut-s) 0, 100% 0, 100% calc(100% - var(--cut-s)), calc(100% - var(--cut-s)) 100%, 0 100%, 0 var(--cut-s));
  transition: transform .18s var(--ease), filter .18s var(--ease), background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.08);
  color: #08221A;
}

.btn:active { transform: translateY(0); }

.btn--ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--gold-soft);
}

.btn--ghost:hover {
  background: rgba(212, 175, 55, .1);
  border-color: var(--gold);
  color: var(--gold);
}

.btn--sm { padding: 9px 16px; font-size: 13.5px; }

.btn--block { width: 100%; }

/* ---------- 6. 页头（框架式导航） ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: linear-gradient(180deg, rgba(7, 38, 29, .98) 0%, rgba(7, 38, 29, .93) 72%, rgba(11, 61, 46, .9) 100%);
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.site-header__rail {
  position: relative;
  height: 3px;
  background: repeating-linear-gradient(115deg, rgba(140, 111, 47, .85) 0 8px, rgba(140, 111, 47, .22) 8px 16px);
}

.site-header__progress {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 0%;
  background: linear-gradient(90deg, var(--gold), var(--orange));
  box-shadow: 0 0 12px rgba(255, 107, 53, .55);
  transition: width .12s linear;
}

.site-header__inner {
  max-width: var(--wrap);
  margin-inline: auto;
  min-height: var(--header-h);
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 30px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.brand__mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  background: linear-gradient(140deg, var(--gold-soft), var(--gold) 46%, #A9841F);
  color: #08221A;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .02em;
  clip-path: polygon(50% 0, 100% 26%, 100% 74%, 50% 100%, 0 74%, 0 26%);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.08;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: .1em;
  color: var(--paper);
}

.brand__sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  color: var(--muted);
  text-transform: uppercase;
}

.site-nav {
  flex: 1 1 auto;
  min-width: 0;
  margin-left: auto;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.site-nav::-webkit-scrollbar { display: none; }

.site-nav__list {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 2px;
  white-space: nowrap;
}

.site-nav__item { flex: 0 0 auto; }

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 10px 12px;
  color: var(--muted);
  font-size: 15px;
  letter-spacing: .02em;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: color .18s var(--ease), background .18s var(--ease);
}

.site-nav__link:hover {
  color: var(--paper);
  background: rgba(212, 175, 55, .1);
}

.site-nav__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .06em;
  color: var(--copper);
  transition: color .18s var(--ease);
}

.site-nav__link[aria-current="page"] {
  color: var(--gold-soft);
  background: linear-gradient(180deg, rgba(212, 175, 55, .16), rgba(212, 175, 55, 0));
}

.site-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--orange));
}

.site-nav__link[aria-current="page"] .site-nav__idx { color: var(--orange); }

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  color: var(--gold);
  cursor: pointer;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

.nav-toggle:hover { border-color: var(--gold); }

.nav-toggle__box {
  position: relative;
  display: block;
  width: 22px;
  height: 2px;
  background: var(--gold);
  transition: background .2s var(--ease);
}

.nav-toggle__box::before,
.nav-toggle__box::after {
  content: "";
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background: var(--gold);
  transition: transform .22s var(--ease);
}

.nav-toggle__box::before { top: -7px; }
.nav-toggle__box::after { top: 7px; }

.site-header[data-open="true"] .nav-toggle__box { background: transparent; }
.site-header[data-open="true"] .nav-toggle__box::before { transform: translateY(7px) rotate(45deg); }
.site-header[data-open="true"] .nav-toggle__box::after { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 96px);
  background: linear-gradient(180deg, rgba(7, 38, 29, .35) 0%, rgba(7, 38, 29, 1) 26%);
  border-top: 1px solid var(--line);
}

.site-footer__edge {
  height: 6px;
  background:
    repeating-linear-gradient(115deg, var(--gold) 0 10px, transparent 10px 20px),
    linear-gradient(90deg, var(--copper), rgba(140, 111, 47, 0));
  opacity: .75;
}

.site-footer__inner {
  max-width: var(--wrap);
  margin-inline: auto;
  padding: clamp(28px, 4vw, 52px) var(--gutter) clamp(20px, 3vw, 32px);
}

.site-footer__masthead {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 24px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.site-footer__brand {
  font-family: var(--font-display);
  font-size: clamp(15px, 1.6vw, 18px);
  letter-spacing: .04em;
  color: var(--gold-soft);
}

.site-footer__region {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr;
  gap: clamp(20px, 3vw, 42px);
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.footer-col__title {
  margin-bottom: 14px;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.footer-col__list {
  display: grid;
  gap: 10px;
}

.footer-col__item { display: grid; gap: 2px; }

.footer-col__label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--copper);
}

.footer-col__value {
  font-size: 14.5px;
  color: var(--paper);
  line-height: 1.6;
}

.footer-col__value--copy {
  font-family: var(--font-mono);
  font-size: 13.5px;
  -webkit-user-select: all;
  user-select: all;
}

.footer-col__link {
  display: inline-block;
  padding: 2px 0;
  font-size: 14.5px;
  color: var(--muted);
  transition: color .16s var(--ease), transform .16s var(--ease);
}

.footer-col__link:hover {
  color: var(--gold);
  transform: translateX(4px);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-top: 20px;
}

.site-footer__legal {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--muted);
}

.site-footer__icp { color: var(--copper); }

.to-top {
  padding: 9px 16px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--gold-soft);
  font-family: var(--font-display);
  font-size: 12.5px;
  letter-spacing: .12em;
  cursor: pointer;
  clip-path: polygon(9px 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%, 0 9px);
  transition: background .16s var(--ease), color .16s var(--ease), border-color .16s var(--ease);
}

.to-top:hover {
  background: rgba(212, 175, 55, .1);
  border-color: var(--gold);
  color: var(--gold);
}

/* ---------- 8. 面板 / 章节 / 栅格 ---------- */
.section { padding-block: clamp(36px, 5.5vw, 80px); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px 24px;
  margin-bottom: clamp(18px, 2.4vw, 28px);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.section-head__title {
  font-size: clamp(1.25rem, 2.4vw, 1.75rem);
  letter-spacing: .02em;
}

.section-head__meta {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}

.panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  background: linear-gradient(160deg, rgba(14, 74, 56, .92) 0%, rgba(7, 38, 29, .96) 100%);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-panel);
}

.panel--cut {
  border-color: transparent;
  background:
    linear-gradient(160deg, rgba(14, 74, 56, .95) 0%, rgba(7, 38, 29, .97) 100%) padding-box,
    linear-gradient(140deg, var(--copper), rgba(140, 111, 47, .22) 58%, var(--copper)) border-box;
  border: 1px solid transparent;
  clip-path: polygon(var(--cut-l) 0, 100% 0, 100% calc(100% - var(--cut-l)), calc(100% - var(--cut-l)) 100%, 0 100%, 0 var(--cut-l));
}

.panel--plain {
  background: linear-gradient(160deg, rgba(30, 90, 168, .18) 0%, rgba(7, 38, 29, .92) 70%);
  box-shadow: none;
}

.grid {
  display: grid;
  gap: clamp(14px, 2vw, 24px);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--auto { grid-template-columns: repeat(auto-fit, minmax(258px, 1fr)); }

/* ---------- 9. 数据组件 ---------- */
.stat { display: flex; flex-direction: column; gap: 2px; }

.stat__value {
  font-size: clamp(1.3rem, 2.6vw, 1.9rem);
  font-weight: 600;
  color: var(--gold-soft);
}

.stat__label {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid rgba(127, 216, 196, .35);
  background: rgba(127, 216, 196, .07);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.chip--live {
  border-color: rgba(255, 107, 53, .45);
  background: rgba(255, 107, 53, .1);
  color: var(--orange);
}

.chip--live::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 8px var(--orange);
}

.chip--gold {
  border-color: rgba(212, 175, 55, .45);
  background: rgba(212, 175, 55, .1);
  color: var(--gold-soft);
}

/* ---------- 10. 面包屑 ---------- */
.breadcrumb { margin-bottom: 18px; }

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}

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

.breadcrumb__item:not(:last-child)::after {
  content: "/";
  color: var(--copper);
}

.breadcrumb__link { color: var(--muted); }
.breadcrumb__link:hover { color: var(--gold); }
.breadcrumb__current { color: var(--paper); }

/* ---------- 11. 图片容器（页面阶段放入占位图） ---------- */
.frame-media {
  position: relative;
  overflow: hidden;
  background: linear-gradient(140deg, rgba(30, 90, 168, .35) 0%, rgba(7, 38, 29, .92) 72%);
  border: 1px solid var(--line);
  clip-path: polygon(var(--cut-m) 0, 100% 0, 100% calc(100% - var(--cut-m)), calc(100% - var(--cut-m)) 100%, 0 100%, 0 var(--cut-m));
}

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

.frame-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(7, 38, 29, 0) 42%, rgba(7, 38, 29, .74) 100%),
    repeating-linear-gradient(115deg, rgba(255, 255, 255, .03) 0 1px, transparent 1px 7px);
}

.frame-media--16x9 { aspect-ratio: 16 / 9; }
.frame-media--4x3 { aspect-ratio: 4 / 3; }
.frame-media--1x1 { aspect-ratio: 1 / 1; }
.frame-media--21x9 { aspect-ratio: 21 / 9; }

.frame-media__caption {
  position: absolute;
  left: 16px;
  bottom: 12px;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--gold-soft);
  text-transform: uppercase;
}

/* ---------- 12. 滚动显现 ---------- */
html.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .55s var(--ease), transform .55s var(--ease);
}

html.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 13. 响应式 ---------- */
@media (max-width: 1080px) {
  .site-nav__link { padding: 10px 9px; font-size: 14px; }
  .brand__sub { display: none; }
}

@media (max-width: 980px) {
  :root { --header-h: 64px; }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    margin-left: 0;
    padding: 0 var(--gutter);
    background: linear-gradient(180deg, rgba(7, 38, 29, .99) 0%, rgba(11, 61, 46, .99) 100%);
    border-bottom: 2px solid var(--gold);
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    visibility: hidden;
    transition: max-height .32s var(--ease), opacity .22s var(--ease), visibility .32s;
  }

  .site-header[data-open="true"] .site-nav {
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    opacity: 1;
    visibility: visible;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    white-space: normal;
  }

  .site-nav__item { width: 100%; }

  .site-nav__link {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 15px 4px;
    font-size: 16px;
    border-bottom: 1px solid var(--line-soft);
    clip-path: none;
  }

  .site-nav__link[aria-current="page"] {
    background: linear-gradient(90deg, rgba(212, 175, 55, .16), transparent 78%);
  }

  .site-nav__link[aria-current="page"]::after {
    left: 0;
    right: auto;
    top: 11px;
    bottom: 11px;
    width: 3px;
    height: auto;
    background: var(--orange);
  }

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

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

  .site-footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .site-header__cta { display: none; }
  .grid--2,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 560px) {
  .site-footer__grid { grid-template-columns: minmax(0, 1fr); }
  .site-footer__masthead { flex-direction: column; align-items: flex-start; }
  .brand__mark { width: 34px; height: 34px; font-size: 13px; }
  .brand__name { font-size: 15.5px; }
}

/* ---------- 14. 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

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

  html.js .reveal {
    opacity: 1;
    transform: none;
  }

  .site-header__progress { transition: none; }
}