/* =========================================================
   HG皇官网免费中国站 · 共享样式 /assets/site.css
   气质：官方档案室 × 数字仪表盘
   ========================================================= */

:root{
  --indigo:#1B2A4A;
  --indigo-deep:#16223C;
  --ink:#0E1420;
  --ink-soft:#3A4560;
  --paper:#F5F0E6;
  --paper-warm:#EDE5D5;
  --amber:#D99A2B;
  --vermilion:#C0392B;
  --celadon:#5B8C7B;
  --gold:#F2D08A;
  --slate:#6B7280;
  --white:#FFFFFF;
  --line:rgba(27,42,74,.16);
  --line-dark:rgba(245,240,230,.20);
  --shadow-1:0 14px 34px -22px rgba(14,20,32,.50);
  --shadow-2:0 26px 54px -26px rgba(14,20,32,.60);
  --radius-s:4px;
  --radius-m:10px;
  --radius-l:24px;
  --font-display:"Saira Condensed","Barlow Condensed","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Source Han Serif SC","Noto Serif SC","Songti SC",serif;
  --font-ui:"Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono","SFMono-Regular",monospace;
  --wrap:1200px;
  --wrap-wide:1360px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --space-block:clamp(44px,6vw,96px);
  --pad-inline:clamp(18px,4vw,40px);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.8;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,picture,video{max-width:100%;height:auto}
ul,ol{margin:0 0 1.1em;padding-left:1.25em}
dl,dd,dt{margin:0}
table{border-collapse:collapse;width:100%}
hr{border:0;border-top:1px solid var(--line);margin:2em 0}

/* ---------- 排版 ---------- */
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  font-weight:400;
  line-height:1.1;
  letter-spacing:.01em;
  color:var(--indigo);
  margin:0 0 .5em;
}
h1{font-size:clamp(38px,6.4vw,84px);font-weight:300;line-height:1.04}
h2{font-size:clamp(28px,4.2vw,52px);font-weight:300;line-height:1.06}
h3{font-size:clamp(20px,2.4vw,30px)}
h4{font-size:clamp(17px,1.6vw,21px);font-weight:600}
p{margin:0 0 1.1em}
a{color:var(--indigo);text-decoration:none;transition:color .16s var(--ease)}
a:hover{color:var(--vermilion)}
strong{font-weight:600;color:var(--ink)}
small{font-size:13px}

/* ---------- 可访问性 ---------- */
:focus-visible{outline:2px solid var(--amber);outline-offset:3px;border-radius:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}
.mono{font-family:var(--font-mono);letter-spacing:.1em}

/* ---------- 布局 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad-inline)}
.wrap--wide{max-width:var(--wrap-wide)}
.section{padding-block:var(--space-block)}
.section--tight{padding-block:clamp(28px,4vw,56px)}
.prose{max-width:74ch;font-size:17px;line-height:1.9;color:var(--ink-soft)}
.prose h2,.prose h3,.prose h4{color:var(--indigo);margin-top:1.8em}
.prose li{margin-bottom:.5em}
.stack>*+*{margin-top:18px}
.cluster{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.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))}
.grid--asym{grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr)}

/* ---------- 文字工具 ---------- */
.display-1{font-family:var(--font-display);font-weight:200;font-size:clamp(52px,11vw,150px);line-height:.9;letter-spacing:.005em;color:var(--indigo);margin:0}
.display-2{font-family:var(--font-display);font-weight:300;font-size:clamp(36px,5.6vw,76px);line-height:.98;color:var(--indigo);margin:0}
.display-3{font-family:var(--font-display);font-weight:400;font-size:clamp(24px,3vw,40px);line-height:1.12;color:var(--indigo);margin:0}
.display-4{font-family:var(--font-display);font-weight:600;font-size:clamp(18px,1.8vw,23px);line-height:1.25;color:var(--indigo);margin:0}
.secnum{display:block;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.3em;color:var(--amber);margin-bottom:12px}
.sectitle{margin:0 0 14px}
.secsub{margin:0;max-width:62ch;color:var(--ink-soft);font-size:16.5px}
.eyebrow{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.28em;text-transform:uppercase;color:var(--slate)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 26px;border:1px solid transparent;border-radius:999px;
  font-family:var(--font-ui);font-size:14px;font-weight:600;letter-spacing:.1em;
  text-align:center;cursor:pointer;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{background:var(--amber);color:var(--ink);box-shadow:0 14px 28px -18px rgba(217,154,43,.95)}
.btn--primary:hover{background:var(--gold);color:var(--ink)}
.btn--ghost{background:transparent;border-color:rgba(27,42,74,.35);color:var(--indigo)}
.btn--ghost:hover{background:rgba(27,42,74,.06);border-color:var(--indigo);color:var(--indigo)}
.btn--dark{background:var(--indigo);color:var(--paper)}
.btn--dark:hover{background:var(--ink);color:var(--white)}
.btn--sm{padding:10px 18px;font-size:12.5px}
.btn__meta{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;opacity:.75}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
  background:rgba(217,154,43,.16);color:#8B5E12;border:1px solid rgba(217,154,43,.35);
}
.tag--celadon{background:rgba(91,140,123,.16);color:#2F5548;border-color:rgba(91,140,123,.38)}
.tag--red{background:rgba(192,57,43,.13);color:#8E2A1F;border-color:rgba(192,57,43,.32)}
.tag--ink{background:rgba(27,42,74,.10);color:var(--indigo);border-color:rgba(27,42,74,.25)}

/* ---------- 卡片 ---------- */
.card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  padding:clamp(18px,2.4vw,28px);
  box-shadow:0 1px 0 rgba(14,20,32,.04);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(217,154,43,.55)}
.card__no{display:block;font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--amber);margin-bottom:10px}
.card__title{margin:0 0 10px;font-family:var(--font-display);font-size:clamp(20px,2.2vw,26px);font-weight:400;color:var(--indigo)}
.card__text{margin:0;font-size:15.5px;line-height:1.85;color:var(--ink-soft)}
.card--ink{background:var(--ink);border-color:rgba(242,208,138,.22);color:rgba(245,240,230,.85);box-shadow:var(--shadow-1)}
.card--ink .card__title{color:var(--paper)}
.card--ink .card__text{color:rgba(245,240,230,.72)}

/* ---------- 文本链接 ---------- */
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-ui);font-size:14px;letter-spacing:.08em;
  color:var(--indigo);border-bottom:1px solid rgba(27,42,74,.3);padding-bottom:3px;
}
.link-arrow::after{content:"→";font-family:var(--font-mono);transition:transform .18s var(--ease)}
.link-arrow:hover{color:var(--vermilion);border-color:var(--vermilion)}
.link-arrow:hover::after{transform:translateX(4px)}

/* ---------- 图片容器基础规则 ---------- */
.media{position:relative;overflow:hidden;border-radius:var(--radius-m);background:var(--paper-warm);border:1px solid var(--line)}
.media>*{display:block;width:100%;height:100%}
.media img,.media svg,.media picture{display:block;width:100%;height:100%;object-fit:cover}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--wide{aspect-ratio:21/9}
.media--tall{aspect-ratio:3/4}
.media--organic{border-radius:28px 8px 28px 8px}
.media__ph{
  display:grid;place-items:center;width:100%;height:100%;min-height:160px;
  background:linear-gradient(135deg,var(--indigo) 0%,#2C4370 45%,var(--celadon) 100%);
  color:rgba(245,240,230,.72);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;text-transform:uppercase;
}
.media__cap{margin:10px 0 0;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--slate)}

/* ---------- 面包屑 ---------- */
.crumbs{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 22px;padding:0;list-style:none;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--slate)}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:rgba(107,114,128,.55)}
.crumbs a{color:var(--slate)}
.crumbs a:hover{color:var(--indigo)}
.crumbs [aria-current="page"]{color:var(--indigo)}

/* ---------- 跳转链接 ---------- */
.skiplink{
  position:absolute;left:12px;top:-70px;z-index:140;
  padding:12px 18px;background:var(--ink);color:var(--paper);
  font-family:var(--font-ui);font-size:13px;letter-spacing:.1em;
  border-radius:0 0 8px 8px;
  transition:top .16s var(--ease);
}
.skiplink:focus{top:0;color:var(--gold)}

/* ---------- 页头 ---------- */
.sitehead{position:sticky;top:0;z-index:90}

.sitehead__index{background:var(--ink);color:rgba(245,240,230,.62)}
.sitehead__indexin{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding-block:7px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
}
.indexmark{display:flex;align-items:center;gap:9px;margin:0;min-width:0}
.indexmark__dot{flex:none;width:7px;height:7px;border-radius:50%;background:var(--celadon);box-shadow:0 0 0 3px rgba(91,140,123,.22)}
.indexmark__sep{color:rgba(245,240,230,.28)}
.utilitylink{
  flex:none;color:var(--gold);font-family:var(--font-ui);font-size:11.5px;letter-spacing:.12em;text-transform:none;
  border-bottom:1px solid rgba(242,208,138,.4);padding-bottom:2px;white-space:nowrap;
}
.utilitylink:hover{color:var(--white);border-color:var(--white)}

.sitehead__bar{
  position:relative;
  background:rgba(245,240,230,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.sitehead__barin{display:flex;align-items:center;justify-content:space-between;gap:22px;padding-block:12px}

.brand{display:flex;align-items:center;gap:12px;color:var(--indigo);min-width:0}
.brand:hover{color:var(--indigo)}
.brand__mark{
  flex:none;display:flex;align-items:flex-end;gap:3px;
  width:40px;height:40px;padding:8px;
  background:var(--indigo);border-radius:4px 14px 4px 14px;
  transition:border-radius .28s var(--ease);
}
.brand:hover .brand__mark{border-radius:14px 4px 14px 4px}
.brand__tick{flex:1 1 auto;border-radius:1.5px;background:var(--gold)}
.brand__tick:nth-child(1){height:44%}
.brand__tick:nth-child(2){height:100%;background:var(--amber)}
.brand__tick:nth-child(3){height:66%;background:var(--celadon)}
.brand__text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand__name{font-family:var(--font-display);font-size:23px;font-weight:600;letter-spacing:.06em;transition:color .16s var(--ease)}
.brand:hover .brand__name{color:var(--vermilion)}
.brand__tag{margin-top:3px;font-family:var(--font-ui);font-size:11px;letter-spacing:.1em;color:var(--slate)}

.navtoggle{
  display:none;align-items:center;gap:10px;
  padding:10px 15px;border:1px solid var(--indigo);border-radius:999px;
  background:var(--indigo);color:var(--paper);cursor:pointer;
  font-family:var(--font-ui);font-size:12.5px;letter-spacing:.14em;
  transition:background .16s var(--ease),color .16s var(--ease);
}
.navtoggle:hover{background:var(--ink);color:var(--white)}
.navtoggle__bars{display:flex;flex-direction:column;gap:4px;width:18px}
.navtoggle__bars span{display:block;height:2px;width:100%;background:var(--gold);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.navtoggle[aria-expanded="true"] .navtoggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.navtoggle[aria-expanded="true"] .navtoggle__bars span:nth-child(2){opacity:0}
.navtoggle[aria-expanded="true"] .navtoggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.navtoggle__label{white-space:nowrap}

.mainnav__list{display:flex;align-items:center;gap:2px;margin:0;padding:0;list-style:none;counter-reset:navi}
.mainnav__link{
  position:relative;display:inline-flex;align-items:baseline;gap:7px;
  padding:9px 12px;border-radius:6px;
  font-family:var(--font-ui);font-size:14px;letter-spacing:.08em;color:var(--indigo);
  transition:color .16s var(--ease),background .16s var(--ease);
}
.mainnav__link::before{
  counter-increment:navi;content:counter(navi,decimal-leading-zero);
  font-family:var(--font-mono);font-size:10px;letter-spacing:.04em;color:var(--slate);
  transition:color .16s var(--ease);
}
.mainnav__link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--amber);transform:scaleX(0);transform-origin:0 50%;
  transition:transform .2s var(--ease);
}
.mainnav__link:hover{background:rgba(217,154,43,.12);color:var(--ink)}
.mainnav__link:hover::before{color:var(--amber)}
.mainnav__link:hover::after{transform:scaleX(1)}
.mainnav__link[aria-current="page"]{color:var(--ink);font-weight:600}
.mainnav__link[aria-current="page"]::before{color:var(--vermilion)}
.mainnav__link[aria-current="page"]::after{transform:scaleX(1);background:var(--vermilion)}

.progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;pointer-events:none}
.progress__bar{
  display:block;height:100%;
  background:linear-gradient(90deg,var(--amber),var(--vermilion));
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform .12s linear;
}

/* ---------- 页脚 ---------- */
.sitefoot{
  position:relative;
  background:var(--indigo);
  color:rgba(245,240,230,.82);
  font-family:var(--font-ui);
  background-image:
    radial-gradient(120% 90% at 6% 0%,rgba(217,154,43,.16),transparent 55%),
    radial-gradient(90% 80% at 100% 100%,rgba(91,140,123,.20),transparent 62%);
}
.sitefoot a:hover{color:var(--gold)}

.sitefoot__route{background:var(--ink);border-bottom:1px solid var(--line-dark)}
.sitefoot__routein{padding-block:clamp(28px,4vw,52px)}
.routehead{margin:0 0 22px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.28em;text-transform:uppercase;color:var(--gold)}
.routelist{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin:0;padding:0;list-style:none}
.routecard{
  display:flex;flex-direction:column;gap:6px;height:100%;
  padding:16px 16px 18px;border:1px solid var(--line-dark);border-radius:var(--radius-m);
  color:rgba(245,240,230,.86);
  transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
}
.routecard:hover{background:rgba(217,154,43,.12);border-color:var(--amber);color:var(--white);transform:translateY(-3px)}
.routecard__no{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--amber)}
.routecard__label{font-family:var(--font-display);font-size:21px;font-weight:400;letter-spacing:.04em;line-height:1.2}
.routecard__note{font-size:12px;line-height:1.55;color:rgba(245,240,230,.58)}

.sitefoot__body{padding-block:clamp(34px,5vw,64px)}
.sitefoot__grid{display:grid;grid-template-columns:1.5fr .9fr 1.1fr;gap:clamp(24px,3.2vw,56px);align-items:start}
.footcol{min-width:0}
.footbrand{margin:0 0 12px;font-family:var(--font-display);font-size:26px;font-weight:400;letter-spacing:.05em;color:var(--paper)}
.footbrand__desc{margin:0;max-width:44ch;font-size:14.5px;line-height:1.85;color:rgba(245,240,230,.68)}
.footbrand__rule{display:block;width:52px;height:3px;margin-top:20px;border-radius:2px;background:var(--amber)}
.footcol__title{margin:0 0 16px;font-family:var(--font-mono);font-size:11.5px;font-weight:400;letter-spacing:.24em;text-transform:uppercase;color:var(--gold)}
.footlinks{margin:0;padding:0;list-style:none}
.footlinks a{
  display:inline-block;padding-block:6px;font-size:14.5px;
  color:rgba(245,240,230,.80);border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footlinks a:hover{color:var(--gold);border-bottom-color:rgba(242,208,138,.5)}
.footmeta{font-size:14.5px}
.footmeta__row{margin-bottom:14px}
.footmeta__term{margin:0 0 3px;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:rgba(245,240,230,.45)}
.footmeta__desc{margin:0;color:rgba(245,240,230,.88);line-height:1.7;word-break:break-word}
.footmeta__note{margin:14px 0 0;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:rgba(245,240,230,.45)}

.sitefoot__legal{background:var(--ink);border-top:1px solid var(--line-dark)}
.sitefoot__legalin{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 28px;
  padding-block:18px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:rgba(245,240,230,.5);
}
.legalnote{margin:0}

/* ---------- 显现 ---------- */
html.js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
html.js [data-reveal].is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:980px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--asym{grid-template-columns:minmax(0,1fr)}
  .sitefoot__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .navtoggle{display:inline-flex}
  .mainnav{
    position:absolute;left:0;right:0;top:100%;display:none;
    background:var(--indigo);
    border-top:1px solid rgba(242,208,138,.28);
    box-shadow:0 26px 44px -26px rgba(14,20,32,.75);
    max-height:calc(100vh - 110px);overflow-y:auto;
  }
  .mainnav[data-open]{display:block}
  .mainnav__list{flex-direction:column;align-items:stretch;gap:0;padding:10px var(--pad-inline) 24px}
  .mainnav__link{
    width:100%;padding:15px 4px;border-radius:0;
    border-bottom:1px solid rgba(245,240,230,.12);
    color:rgba(245,240,230,.9);font-size:16px;letter-spacing:.1em;
  }
  .mainnav__link::before{color:var(--gold);font-size:11px}
  .mainnav__link::after{display:none}
  .mainnav__link:hover,.mainnav__link:focus-visible{background:rgba(217,154,43,.14);color:var(--white)}
  .mainnav__link[aria-current="page"]{color:var(--gold);border-bottom-color:var(--amber)}
}
@media (max-width:640px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .sitefoot__grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .media--wide{aspect-ratio:16/9}
  .brand__tag{display:none}
  .indexmark__sep,.indexmark .mono{display:none}
  .utilitylink{font-size:10.5px;letter-spacing:.08em}
  .sitefoot__legalin{justify-content:flex-start}
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .progress__bar{transition:none}
  .btn:hover,.card:hover,.routecard:hover{transform:none}
  html.js [data-reveal]{opacity:1 !important;transform:none !important}
}