/* ============================================================
   财神棋牌 · Site Kit 共享样式
   文件: /assets/site.css
   模块: 变量 / Reset / 排版 / 页头 / 页脚 / 共享组件 / 响应式
   ============================================================ */

/* ---------- 1. CSS 变量 ---------- */
:root {
  --color-ink: #1A1A1A;
  --color-pearl: #F5F0E8;
  --color-gold: #D4AF37;
  --color-crimson: #8B0000;
  --color-bronze: #B8860B;
  --color-gray: #E0E0E0;
  --color-ivory: #FFFFF0;
  --color-darkgold: #996515;

  --font-serif: Georgia, "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", STSong, SimSun, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  --header-h: 64px;
  --container-w: 1280px;
  --container-pad: clamp(16px, 4vw, 48px);
  --transition-fast: .18s ease;
  --transition-med: .3s ease;
}

/* ---------- 2. Reset 与基础 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
* {
  margin: 0;
}
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  background: var(--color-ink);
  scroll-behavior: smooth;
}
body {
  min-height: 100vh;
  background: var(--color-ink);
  color: var(--color-pearl);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
main {
  display: block;
}
img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}
input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}
a {
  color: inherit;
  text-decoration: none;
}
ul,
ol {
  list-style: none;
  padding: 0;
  margin: 0;
}
button {
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}
::selection {
  background: rgba(139, 0, 0, .85);
  color: var(--color-pearl);
}
:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
}

/* ---------- 3. 排版与工具 ---------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: .04em;
}
h1 {
  font-size: clamp(40px, 8vw, 88px);
  font-weight: 500;
  letter-spacing: .05em;
}
h2 {
  font-size: clamp(24px, 3.4vw, 44px);
}
h3 {
  font-size: 20px;
}
h4 {
  font-size: 16px;
}
.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;
}
.container {
  width: min(100%, var(--container-w));
  margin-inline: auto;
  padding-inline: var(--container-pad);
}
#main-content {
  scroll-margin-top: calc(var(--header-h) + 12px);
}
main:focus {
  outline: none;
}

/* ---------- 4. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: -90px;
  left: 16px;
  z-index: 10001;
  padding: 10px 18px;
  background: var(--color-gold);
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .08em;
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, .35);
  transition: top var(--transition-med);
}
.skip-link:focus-visible {
  top: 12px;
}

/* ---------- 5. 页头 ---------- */
.site-header {
  --scroll-progress: 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(26, 26, 26, .94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(212, 175, 55, .28);
  box-shadow: 0 8px 24px rgba(0, 0, 0, .16);
}
.site-header::after {
  content: "";
  position: absolute;
  left: 41%;
  top: -10px;
  bottom: -10px;
  width: 1px;
  z-index: 1;
  background: linear-gradient(180deg, transparent, rgba(212, 175, 55, .55) 50%, transparent);
  transform: rotate(16deg);
  pointer-events: none;
}
.site-header__progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  z-index: 4;
  background: linear-gradient(90deg, var(--color-crimson) 0%, var(--color-bronze) 45%, var(--color-gold) 100%);
  transform: scaleX(var(--scroll-progress, 0));
  transform-origin: left center;
  pointer-events: none;
  will-change: transform;
}
.site-header__inner {
  position: relative;
  z-index: 2;
  width: min(100%, var(--container-w));
  height: var(--header-h);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  display: flex;
  align-items: center;
  gap: 18px;
}
.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--color-pearl);
}
.site-header__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--color-gold), var(--color-bronze));
  color: var(--color-ink);
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
  box-shadow: 0 0 14px rgba(212, 175, 55, .3);
  transition: box-shadow var(--transition-fast);
}
.site-header__brand:hover .site-header__mark,
.site-header__brand:focus-visible .site-header__mark {
  box-shadow: 0 0 20px rgba(212, 175, 55, .55);
}
.site-header__text {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .14em;
  line-height: 1;
}
.site-header__tagline {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .16em;
  color: rgba(245, 240, 232, .55);
  border-left: 1px solid rgba(212, 175, 55, .35);
  padding-left: 10px;
  white-space: nowrap;
}
.site-header__nav {
  margin-left: auto;
}
.site-header__list {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.4vw, 36px);
  counter-reset: siteNav;
}
.site-header__item {
  counter-increment: siteNav;
}
.site-header__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 2px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .12em;
  color: rgba(245, 240, 232, .78);
  white-space: nowrap;
  transition: color var(--transition-fast);
}
.site-header__link::before {
  content: "0" counter(siteNav);
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.4;
  color: var(--color-bronze);
}
.site-header__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2px;
  height: 2px;
  background: var(--color-gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--transition-fast);
}
.site-header__link:hover,
.site-header__link:focus-visible {
  color: var(--color-pearl);
}
.site-header__link:hover::after,
.site-header__link:focus-visible::after {
  transform: scaleX(1);
}
.site-header__link[aria-current="page"] {
  color: var(--color-gold);
}
.site-header__link[aria-current="page"]::before {
  color: var(--color-crimson);
}
.site-header__link[aria-current="page"]::after {
  background: var(--color-crimson);
  transform: scaleX(1);
}
.site-header__cta {
  position: relative;
  isolation: isolate;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--color-ink);
  white-space: nowrap;
  transition: color var(--transition-fast);
}
.site-header__cta::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(135deg, var(--color-gold), var(--color-bronze));
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: filter var(--transition-fast);
}
.site-header__cta:hover::before,
.site-header__cta:focus-visible::before {
  filter: brightness(1.14);
}
.site-header__toggle {
  display: none;
  position: relative;
  flex: 0 0 40px;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(212, 175, 55, .4);
  background: rgba(212, 175, 55, .08);
}
.site-header__toggle-bar {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 20px;
  height: 2px;
  background: var(--color-gold);
  transform: translate(-50%, -50%);
  transition: background var(--transition-fast);
}
.site-header__toggle-bar::before,
.site-header__toggle-bar::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: var(--color-gold);
  transition: transform var(--transition-med);
}
.site-header__toggle-bar::before {
  transform: translateY(-7px);
}
.site-header__toggle-bar::after {
  transform: translateY(7px);
}
.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar {
  background: transparent;
}
.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar::before {
  transform: translateY(0) rotate(45deg);
}
.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar::after {
  transform: translateY(0) rotate(-45deg);
}

/* ---------- 6. 页脚 ---------- */
.site-footer {
  position: relative;
  isolation: isolate;
  background: var(--color-ink);
  border-top: 2px solid var(--color-gold);
  color: var(--color-pearl);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 180px;
  height: 2px;
  background: var(--color-crimson);
}
.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(260px, 1.5fr) 1.1fr 1fr;
  gap: clamp(24px, 4vw, 56px);
  width: min(100%, var(--container-w));
  margin-inline: auto;
  padding: clamp(32px, 6vw, 60px) var(--container-pad);
}
.site-footer__brand,
.site-footer__contact,
.site-footer__links {
  min-width: 0;
}
.site-footer__brand {
  border-left: 2px solid var(--color-crimson);
  padding-left: 18px;
}
.site-footer__brand-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-pearl);
}
.site-footer__mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, var(--color-gold), var(--color-bronze));
  color: var(--color-ink);
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  clip-path: polygon(7px 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%, 0 7px);
  box-shadow: 0 0 14px rgba(212, 175, 55, .3);
  transition: box-shadow var(--transition-fast);
}
.site-footer__brand-link:hover .site-footer__mark,
.site-footer__brand-link:focus-visible .site-footer__mark {
  box-shadow: 0 0 20px rgba(212, 175, 55, .55);
}
.site-footer__name {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: .16em;
}
.site-footer__desc {
  max-width: 30em;
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(245, 240, 232, .6);
}
.site-footer__trust {
  margin-top: 14px;
  padding-left: 10px;
  border-left: 2px solid var(--color-bronze);
  font-size: 12px;
  line-height: 1.8;
  color: var(--color-darkgold);
}
.site-footer__title {
  position: relative;
  margin-bottom: 16px;
  padding-bottom: 10px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--color-gold);
}
.site-footer__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 26px;
  height: 2px;
  background: var(--color-crimson);
}
.site-footer__contact-list li,
.site-footer__link-list li {
  padding: 4px 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245, 240, 232, .72);
}
.site-footer__link-list a {
  color: rgba(245, 240, 232, .78);
  border-bottom: 1px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}
.site-footer__link-list a:hover,
.site-footer__link-list a:focus-visible {
  color: var(--color-gold);
  border-bottom-color: rgba(212, 175, 55, .5);
}
.site-footer__bottom {
  border-top: 1px solid rgba(212, 175, 55, .2);
  background:
    repeating-linear-gradient(115deg, rgba(212, 175, 55, .035) 0 12px, transparent 12px 24px),
    rgba(0, 0, 0, .35);
}
.site-footer__bottom-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  width: min(100%, var(--container-w));
  margin-inline: auto;
  padding: 16px var(--container-pad);
  font-size: 13px;
  color: rgba(245, 240, 232, .5);
}

/* ---------- 7. 返回顶部 ---------- */
.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 900;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: var(--color-gold);
  color: var(--color-ink);
  font-size: 20px;
  line-height: 1;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--transition-med), transform var(--transition-med), visibility 0s linear var(--transition-med), background var(--transition-fast);
}
.back-to-top[data-open] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity var(--transition-med), transform var(--transition-med), background var(--transition-fast);
}
.back-to-top:hover {
  background: var(--color-bronze);
  color: var(--color-pearl);
}

/* ---------- 8. 共享组件 ---------- */
.btn {
  position: relative;
  isolation: isolate;
  z-index: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--color-ink);
  transition: color var(--transition-fast), transform var(--transition-fast);
}
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  transition: background var(--transition-fast), filter var(--transition-fast);
}
.btn--gold::before {
  background: linear-gradient(135deg, var(--color-gold), var(--color-bronze));
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}
.btn--gold:hover::before,
.btn--gold:focus-visible::before {
  filter: brightness(1.12);
}
.btn--outline {
  color: var(--color-gold);
}
.btn--outline::before {
  background: transparent;
  border: 1px solid var(--color-gold);
  clip-path: polygon(9px 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%, 0 9px);
}
.btn--outline:hover,
.btn--outline:focus-visible {
  color: var(--color-pearl);
}
.btn--outline:hover::before,
.btn--outline:focus-visible::before {
  background: rgba(212, 175, 55, .16);
}
.panel {
  padding: clamp(20px, 4vw, 40px);
  background: var(--color-ivory);
  color: var(--color-ink);
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
}
.panel--dark {
  background: var(--color-ink);
  color: var(--color-pearl);
}
.panel--gold {
  background: linear-gradient(135deg, var(--color-gold), var(--color-bronze));
  color: var(--color-ink);
}
.panel--crimson {
  background: var(--color-crimson);
  color: var(--color-pearl);
}
.tag,
.tag--red {
  display: inline-block;
  padding: 3px 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
  line-height: 1.7;
  background: rgba(212, 175, 55, .14);
  color: var(--color-gold);
  border-left: 2px solid var(--color-gold);
  clip-path: polygon(4px 0, 100% 0, 100% 100%, 0 100%, 0 4px);
}
.tag--red {
  background: rgba(139, 0, 0, .22);
  color: #f0c4c4;
  border-left-color: var(--color-crimson);
}
.section-head {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  margin-bottom: clamp(16px, 3vw, 32px);
}
.section-head__index {
  flex: 0 0 auto;
  font-family: var(--font-serif);
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 400;
  line-height: .9;
  color: rgba(212, 175, 55, .4);
}
.section-head__title {
  font-family: var(--font-serif);
  font-size: clamp(24px, 3.4vw, 44px);
  font-weight: 500;
  line-height: 1.2;
  color: currentColor;
}
.grid {
  display: grid;
  gap: clamp(16px, 3vw, 28px);
}
.grid--cols-2 {
  grid-template-columns: 1fr;
}
.grid--cols-3 {
  grid-template-columns: 1fr;
}
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  font-size: 13px;
  color: rgba(245, 240, 232, .6);
}
.breadcrumbs a {
  color: rgba(245, 240, 232, .8);
  transition: color var(--transition-fast);
}
.breadcrumbs a:hover,
.breadcrumbs a:focus-visible {
  color: var(--color-gold);
}
.breadcrumbs [aria-current="page"] {
  color: var(--color-gold);
}
.breadcrumbs__sep {
  color: var(--color-crimson);
}
.prose {
  font-size: 15px;
  line-height: 1.9;
  color: rgba(245, 240, 232, .82);
}
.prose p + p {
  margin-top: 1.1em;
}
.prose h2,
.prose h3,
.prose h4 {
  margin-top: 1.7em;
  margin-bottom: .5em;
  color: var(--color-pearl);
}
.prose h2 {
  font-size: clamp(20px, 2vw, 28px);
}
.prose h3 {
  font-size: 18px;
}
.prose ul,
.prose ol {
  margin-top: .6em;
}
.prose li {
  position: relative;
  padding-left: 1.4em;
  margin-top: .35em;
}
.prose li::before {
  content: "/";
  position: absolute;
  left: 0;
  color: var(--color-gold);
}
.prose a {
  color: var(--color-gold);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(212, 175, 55, .4);
}
.prose blockquote {
  margin: 1.3em 0;
  padding: .9em 1.4em;
  background: rgba(212, 175, 55, .08);
  border-left: 2px solid var(--color-gold);
  color: rgba(245, 240, 232, .85);
}
.figure {
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    repeating-linear-gradient(115deg, rgba(212, 175, 55, .08) 0 16px, transparent 16px 28px),
    var(--color-ink);
}
.figure::before {
  content: "財";
  position: relative;
  font-family: var(--font-serif);
  font-size: clamp(56px, 10vw, 128px);
  line-height: 1;
  color: rgba(212, 175, 55, .22);
}
.figure img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.figure--ratio-16x9 {
  aspect-ratio: 16 / 9;
}
.figure--ratio-4x3 {
  aspect-ratio: 4 / 3;
}
.figure--ratio-21x9 {
  aspect-ratio: 21 / 9;
}

/* ---------- 9. 响应式 ---------- */
@media (max-width: 1180px) {
  .site-header__tagline {
    display: none;
  }
}
@media (max-width: 959px) {
  :root {
    --header-h: 58px;
  }
  .site-header::after {
    display: none;
  }
  .site-header__inner {
    gap: 8px;
  }
  .site-header__brand {
    gap: 8px;
  }
  .site-header__mark {
    width: 34px;
    height: 34px;
    font-size: 20px;
  }
  .site-header__text {
    font-size: 17px;
    letter-spacing: .1em;
  }
  .site-header__nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin: 0;
    z-index: 3;
    background: rgba(18, 18, 18, .97);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(212, 175, 55, .35);
    box-shadow: 0 18px 32px rgba(0, 0, 0, .45);
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    transition: max-height var(--transition-med), visibility 0s linear var(--transition-med);
  }
  .site-header__nav[data-open] {
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    visibility: visible;
    transition: max-height var(--transition-med), visibility 0s;
  }
  .site-header__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px 0 18px;
  }
  .site-header__item {
    border-bottom: 1px dashed rgba(212, 175, 55, .14);
  }
  .site-header__link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px var(--container-pad);
    font-size: 16px;
  }
  .site-header__link::after {
    display: none;
  }
  .site-header__cta {
    margin-left: auto;
    padding: 7px 12px;
    font-size: 12px;
  }
  .site-header__toggle {
    display: block;
  }
  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
  }
  .site-footer__brand {
    grid-column: 1 / -1;
  }
}
@media (max-width: 640px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
  }
  .site-footer__bottom-inner {
    flex-direction: column;
  }
}

/* ---------- 10. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}