/* =========================================================================
   皇冠现金站 · 共享样式 /assets/site.css
   语汇：金库黑底 + 72px 细网格 + 1px 金属边界 + 单一金色锚点
   ========================================================================= */

/* ---------- 1. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body,h1,h2,h3,h4,h5,p,figure,blockquote,ul,ol,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
[hidden]{display:none !important}
[id]{scroll-margin-top:112px}

/* ---------- 2. 变量 ---------- */
:root{
  --vault-black:#0B0B0D;
  --deep-black:#121317;
  --metal-gray:#2A2C31;
  --mist:#A7ABB3;
  --white:#FFFFFF;
  --crown:#C9A227;
  --amber:#FF8A1E;
  --cyan:#2FE0D0;
  --gold-line:#4A3B12;
  --danger:#E5484D;

  --ink:var(--white);
  --ink-2:var(--mist);
  --line:var(--metal-gray);
  --line-soft:rgba(42,44,49,.65);

  --gutter:clamp(16px,4vw,48px);
  --wrap:1180px;
  --pill:999px;
  --r-sm:4px;
  --ease:cubic-bezier(.22,.61,.36,1);

  --font-display:"Barlow Condensed","Oswald","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Consolas,monospace;
}

/* ---------- 3. 基础排版 ---------- */
body{
  min-height:100vh;
  background-color:var(--vault-black);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  font-weight:400;
  line-height:1.85;
  letter-spacing:.01em;
  background-image:
    linear-gradient(to right,rgba(42,44,49,.34) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(42,44,49,.34) 1px,transparent 1px),
    radial-gradient(120% 70% at 50% -8%,rgba(201,162,39,.10),transparent 62%);
  background-size:72px 72px,72px 72px,100% 100%;
  background-repeat:repeat,repeat,no-repeat;
}
h1,h2,h3,h4,h5{font-family:var(--font-display);font-weight:800;line-height:1.04;letter-spacing:-.01em;color:var(--white)}
p{max-width:62ch}
::selection{background:rgba(255,138,30,.28);color:var(--white)}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px;border-radius:2px}

/* ---------- 4. 通用布局组件 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(40px,6vw,88px)}
.chapter{position:relative;padding-block:clamp(48px,8vw,112px);border-top:1px solid var(--line-soft)}
.chapter:first-of-type{border-top:0}
.chapter__number{
  display:inline-block;font-family:var(--font-mono);font-size:12px;font-weight:500;
  letter-spacing:.22em;color:var(--gold-line);text-transform:uppercase;
  transition:color .25s var(--ease);
}
.chapter-band{height:4px;border-radius:2px;background:linear-gradient(90deg,var(--crown),rgba(201,162,39,0) 62%);margin-bottom:clamp(20px,3vw,32px)}
[data-chapter].is-active .chapter__number{color:var(--crown)}
[data-chapter].is-active::before{
  content:"";position:absolute;left:calc(-1 * var(--gutter) / 2);top:clamp(48px,8vw,112px);
  width:2px;height:44px;background:linear-gradient(180deg,var(--crown),transparent);
}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:clamp(12px,2vw,28px);margin-bottom:clamp(22px,3vw,38px)}
.eyebrow{
  font-family:var(--font-serif);font-style:italic;font-size:14px;font-weight:500;
  letter-spacing:.16em;color:var(--crown);line-height:1.6;
}
.display{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(2.8rem,8vw,7.5rem);line-height:.92;letter-spacing:-.02em;color:var(--white);
}
.section-title{font-size:clamp(1.6rem,3.4vw,2.6rem);line-height:1.1;color:var(--white)}
.prose{max-width:62ch;color:var(--mist);font-size:17px;line-height:1.85}
.prose p+p{margin-top:1.05em}
.prose strong{color:var(--white);font-weight:600}
.prose ul{list-style:disc;padding-left:1.15em;line-height:1.6}
.meta-mono{
  font-family:var(--font-mono);font-size:12px;font-weight:500;
  letter-spacing:.16em;text-transform:uppercase;color:var(--mist);
}
.divider{height:1px;border:0;margin:0;background:var(--line)}
.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;
}

/* ---------- 5. 按钮与标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55em;
  min-height:46px;padding:0 24px;border-radius:var(--pill);
  border:1px solid var(--line);background:transparent;color:var(--white);
  font-family:var(--font-body);font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;transition:background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn--primary{background:var(--amber);border-color:var(--amber);color:var(--vault-black)}
.btn--primary:hover{background:#FFA24A;border-color:#FFA24A}
.btn--ghost{color:var(--mist);border-color:var(--metal-gray);background:transparent}
.btn--ghost:hover{color:var(--white);border-color:var(--crown);background:rgba(201,162,39,.07)}

.tag{
  display:inline-flex;align-items:center;gap:.45em;padding:2px 11px;border-radius:var(--pill);
  font-family:var(--font-mono);font-size:12px;font-weight:500;letter-spacing:.1em;
  color:var(--crown);border:1px solid var(--gold-line);background:rgba(74,59,18,.22);
}
.tag--quarter{color:var(--mist);border-color:var(--metal-gray);background:transparent}
.tag--status{color:var(--cyan);border-color:rgba(47,224,208,.36);background:rgba(47,224,208,.08)}

/* ---------- 6. 卡片 / 清单 / 概览 ---------- */
.card{
  position:relative;display:flex;flex-direction:column;gap:10px;
  padding:clamp(18px,2.4vw,28px);
  background:var(--deep-black);border:1px solid var(--line);border-radius:var(--r-sm);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.card:hover{border-color:rgba(201,162,39,.55);transform:translateY(-2px)}
.card__title{font-family:var(--font-display);font-size:clamp(1.15rem,1.9vw,1.5rem);line-height:1.15;color:var(--white)}
.card__meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--mist)}
.card-grid{display:grid;gap:clamp(14px,2vw,22px);grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}

.index-list{border-top:1px solid var(--line)}
.index-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:14px 0;border-bottom:1px solid var(--line-soft);font-size:15px;line-height:1.6;color:var(--mist);
  transition:color .16s var(--ease),padding-left .16s var(--ease);
}
.index-row:hover{color:var(--white);padding-left:6px}
.index-row strong{color:var(--white);font-weight:600}

.stat{display:flex;flex-direction:column;gap:4px;padding:16px 0;border-top:1px solid var(--line)}
.stat__value{font-family:var(--font-mono);font-size:clamp(1.6rem,3vw,2.4rem);font-weight:500;line-height:1.1;color:var(--white)}
.stat__label{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--mist)}

/* ---------- 7. 面包屑 ---------- */
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:.55em;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--mist);
}
.breadcrumbs a{color:var(--mist);transition:color .16s var(--ease)}
.breadcrumbs a:hover{color:var(--crown)}
.breadcrumbs [aria-current="page"]{color:var(--white)}
.breadcrumbs__sep{color:var(--gold-line)}

/* ---------- 8. 图片容器基础规则 ---------- */
.media-frame{
  position:relative;width:100%;aspect-ratio:16/10;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:
    repeating-linear-gradient(135deg,rgba(42,44,49,.55) 0 2px,transparent 2px 10px),
    radial-gradient(120% 120% at 18% 0%,rgba(201,162,39,.18),transparent 58%),
    radial-gradient(90% 90% at 100% 100%,rgba(47,224,208,.10),transparent 60%),
    var(--deep-black);
}
.media-frame img,.media-frame video{width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}

/* ---------- 9. 头部 ---------- */
.skip-link{
  position:fixed;top:8px;left:8px;z-index:400;
  padding:10px 18px;border-radius:var(--pill);
  background:var(--amber);color:var(--vault-black);
  font-size:14px;font-weight:700;line-height:1;
  transform:translateY(-160%);transition:transform .2s var(--ease);
}
.skip-link:focus-visible{transform:translateY(0)}

.site-header{
  position:sticky;top:0;z-index:120;
  padding:14px var(--gutter) 0;
}
.read-progress{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:200;
  background:rgba(255,255,255,.07);
}
.read-progress__bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--crown),var(--amber));
}
.header-island{
  position:relative;display:flex;align-items:center;gap:clamp(10px,2vw,28px);
  max-width:var(--wrap);margin-inline:auto;
  padding:10px 12px 10px 18px;
  background:rgba(18,19,23,.88);
  border:1px solid var(--metal-gray);
  border-radius:var(--pill);
  box-shadow:0 20px 44px -30px rgba(0,0,0,.95);
  -webkit-backdrop-filter:blur(14px) saturate(130%);
  backdrop-filter:blur(14px) saturate(130%);
  transition:padding .22s var(--ease),background-color .22s var(--ease);
}
.header-island::after{
  content:"";position:absolute;left:14%;right:14%;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--crown),transparent);
  opacity:.5;animation:vault-scan 12s linear infinite;
}
@keyframes vault-scan{
  0%{transform:translateX(-14%);opacity:.15}
  50%{transform:translateX(14%);opacity:.65}
  100%{transform:translateX(-14%);opacity:.15}
}
.site-header[data-scrolled="true"] .header-island{
  padding-block:6px;background:rgba(11,11,13,.96);
}

.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{color:var(--crown);font-size:14px;line-height:1}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__name{font-family:var(--font-display);font-size:19px;font-weight:800;letter-spacing:.02em;color:var(--white)}
.brand__meta{font-family:var(--font-serif);font-style:italic;font-size:11px;letter-spacing:.14em;color:var(--mist)}
.brand__version{
  font-family:var(--font-mono);font-size:12px;font-weight:500;letter-spacing:.08em;
  color:var(--crown);border:1px solid var(--gold-line);border-radius:var(--pill);
  padding:1px 8px;background:rgba(74,59,18,.3);
}

.nav{display:block;margin-inline:auto}
.nav__list{display:flex;align-items:center;gap:clamp(2px,.8vw,10px)}
.nav__item{flex:0 0 auto}
.nav__link{
  position:relative;display:inline-block;padding:8px 12px;
  font-size:14.5px;font-weight:500;line-height:1.4;color:var(--mist);
  transition:color .16s var(--ease);
}
.nav__link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:1px;
  background:var(--crown);transform:scaleX(0);transform-origin:0 50%;
  transition:transform .2s var(--ease);
}
.nav__link:hover{color:var(--white)}
.nav__link:hover::after{transform:scaleX(1)}
.nav__link[aria-current="page"]{color:var(--white)}
.nav__link[aria-current="page"]::after{transform:scaleX(1)}

.header-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.action-pill{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 16px;border-radius:var(--pill);
  font-family:var(--font-body);font-size:14px;font-weight:600;line-height:1;
  cursor:pointer;white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.action-pill--search{
  background:rgba(255,138,30,.08);border:1px solid rgba(255,138,30,.55);color:var(--amber);
}
.action-pill--search:hover,.action-pill--search[aria-expanded="true"]{
  background:var(--amber);border-color:var(--amber);color:var(--vault-black);
}
.action-pill--cta{background:var(--amber);border:1px solid var(--amber);color:var(--vault-black)}
.action-pill--cta:hover{background:#FFA24A;border-color:#FFA24A}

.nav-toggle{
  display:none;position:relative;align-items:center;justify-content:center;gap:6px;
  width:44px;height:38px;border:1px solid var(--metal-gray);border-radius:var(--pill);
  color:var(--mist);cursor:pointer;
}
.nav-toggle__bar{
  position:absolute;left:50%;width:16px;height:1.5px;margin-left:-8px;
  background:currentColor;transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle__bar:nth-child(1){top:13px}
.nav-toggle__bar:nth-child(2){top:18px}
.nav-toggle__bar:nth-child(3){top:23px}
.nav-toggle__label{display:none}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.nav-toggle[aria-expanded="true"]{color:var(--amber);border-color:rgba(255,138,30,.6)}

/* 检索浮层 */
.search-panel{max-width:var(--wrap);margin:8px auto 0}
.search-panel__inner{
  padding:18px clamp(14px,2.4vw,24px) 20px;
  background:rgba(11,11,13,.97);
  border:1px solid var(--metal-gray);border-radius:18px;
  box-shadow:0 30px 70px -40px rgba(0,0,0,1);
  animation:vault-drop .18s var(--ease) both;
}
@keyframes vault-drop{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}
.search-panel__label{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--mist);margin-bottom:12px;max-width:none;
}
.search-panel__input{
  width:100%;height:44px;padding:0 16px;margin-bottom:14px;
  background:var(--deep-black);border:1px solid var(--metal-gray);border-radius:var(--pill);
  color:var(--white);font-family:var(--font-body);font-size:15px;
  transition:border-color .18s var(--ease);
}
.search-panel__input::placeholder{color:#5c6069}
.search-panel__input:focus-visible{border-color:var(--amber);outline:2px solid rgba(255,138,30,.4);outline-offset:0}
.search-panel__list{display:grid;gap:2px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.search-panel__item{min-width:0}
.search-panel__link{
  display:flex;flex-direction:column;gap:2px;padding:10px 14px;border-radius:10px;
  border-left:1px solid transparent;transition:background-color .16s var(--ease),border-color .16s var(--ease);
}
.search-panel__link:hover,.search-panel__link:focus-visible{
  background:rgba(201,162,39,.08);border-left-color:var(--crown);
}
.search-panel__name{font-size:15px;font-weight:600;color:var(--white)}
.search-panel__desc{font-size:12.5px;line-height:1.5;color:var(--mist)}
.search-panel__empty{
  margin-top:14px;font-size:14px;color:var(--mist);max-width:none;
  border-top:1px solid var(--line-soft);padding-top:14px;
}

/* ---------- 10. 页脚 ---------- */
.site-footer{
  margin-top:clamp(64px,10vw,160px);
  border-top:1px solid var(--metal-gray);
  background:linear-gradient(180deg,var(--deep-black),var(--vault-black));
  color:var(--mist);
}
.footer-band{padding:clamp(40px,6vw,72px) 0 clamp(26px,4vw,44px)}
.footer-band__grid{
  display:grid;gap:clamp(24px,4vw,48px);
  width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter);
  grid-template-columns:1.5fr .9fr .9fr 1.3fr;
}
.footer-brand__link{
  display:inline-block;font-family:var(--font-display);font-size:22px;font-weight:800;
  letter-spacing:.02em;color:var(--white);margin-bottom:10px;
}
.footer-brand__version{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--crown);max-width:none}
.footer-brand__icp{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.08em;color:var(--mist);margin-top:10px;max-width:none}
.footer-brand__area{font-family:var(--font-serif);font-style:italic;font-size:13.5px;line-height:1.7;color:#7f838b;margin-top:8px;max-width:26ch}

.footer-index__title,.footer-direct__title,.footer-service__title{
  font-family:var(--font-mono);font-size:11.5px;font-weight:500;letter-spacing:.2em;
  text-transform:uppercase;color:var(--gold-line);margin-bottom:14px;
}
.footer-index__list,.footer-direct__list{display:flex;flex-direction:column;gap:9px}
.footer-index__link,.footer-direct__link,.footer-base__link{
  font-size:14.5px;line-height:1.6;color:var(--mist);
  transition:color .16s var(--ease);
}
.footer-index__link:hover,.footer-direct__link:hover,.footer-base__link:hover{color:var(--white)}
.footer-direct__link{color:var(--crown)}
.footer-direct__link:hover{color:var(--amber)}

.footer-service__list{display:flex;flex-direction:column;gap:10px}
.footer-service__item{display:flex;gap:10px;font-size:13.5px;line-height:1.6}
.footer-service__label{
  flex:0 0 34px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;
  color:#6b6f78;padding-top:2px;
}
.footer-service__value{color:var(--mist);overflow-wrap:anywhere}

.footer-base{border-top:1px solid var(--line-soft)}
.footer-base__inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  width:100%;max-width:var(--wrap);margin-inline:auto;
  padding:16px var(--gutter);
}
.footer-base__note{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:#6b6f78;max-width:none}
.footer-base__legal{display:flex;align-items:center;gap:18px}
.footer-base__legal-item{flex:0 0 auto}
.footer-base__link{font-size:13px}

/* ---------- 11. 显现动效 ---------- */
html.js [data-reveal]{opacity:0;transform:translateY(14px)}
html.js [data-reveal].is-visible{
  opacity:1;transform:none;
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}

/* ---------- 12. 响应式 ---------- */
@media (max-width:1100px){
  .nav__link{padding:8px 9px;font-size:14px}
  .brand__meta{display:none}
}
@media (max-width:960px){
  .header-island{padding:8px 10px 8px 14px;gap:8px;border-radius:24px}
  .nav{
    position:absolute;top:calc(100% + 8px);left:0;right:0;display:none;
    padding:8px;background:rgba(11,11,13,.985);
    border:1px solid var(--metal-gray);border-radius:18px;
    box-shadow:0 30px 70px -40px rgba(0,0,0,1);
  }
  .nav[data-open="true"]{display:block;animation:vault-drop .18s var(--ease) both}
  .nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .nav__link{display:block;padding:12px 14px;border-radius:10px;font-size:15px}
  .nav__link::after{display:none}
  .nav__link[aria-current="page"]{
    color:var(--white);background:rgba(201,162,39,.12);
    box-shadow:inset 2px 0 0 var(--crown);
  }
  .nav-toggle{display:inline-flex}
  .action-pill{height:36px;padding:0 14px;font-size:13.5px}
  .footer-band__grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:720px){
  body{font-size:16px;line-height:1.8}
  .brand__name{font-size:17px}
  .brand__version{font-size:11px;padding:0 6px}
  .action-pill--search{padding:0 12px}
  .display{font-size:clamp(2.4rem,11vw,3.6rem)}
  .search-panel__list{grid-template-columns:1fr}
  .footer-band__grid{grid-template-columns:1fr;gap:28px}
  .footer-service__item{font-size:13px}
  [data-chapter].is-active::before{display:none}
}
@media (max-width:480px){
  .header-island{gap:6px}
  .brand__text{display:none}
  .action-pill--cta{padding:0 12px;font-size:13px}
  .footer-base__inner{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  html.js [data-reveal]{opacity:1 !important;transform:none !important}
  .header-island::after{display:none}
}