/* ===========================================================
   星投官网 · 共享样式表 /assets/site.css
   深空蓝基底 + 电光青状态色 + 暖金数字锚点
   =========================================================== */

/* ---------- 变量 ---------- */
:root{
  --ink:#060C18;
  --panel:#0D1A31;
  --edge:#1B2E52;
  --paper:#EFE6D2;
  --paper-ink:#10192B;
  --cyan:#16E3D2;
  --cyan-deep:#0E8F8A;
  --gold:#E9B44C;
  --orange:#E2703A;
  --mist:#93A0B8;
  --text:#DCE6F5;
  --text-strong:#F2F6FC;

  --font-display:"Saira Condensed","Archivo Narrow","HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;

  --fs-12:12px; --fs-14:14px; --fs-16:16px; --fs-20:20px;
  --fs-28:28px; --fs-40:40px; --fs-56:56px; --fs-72:72px;

  --ease:cubic-bezier(.2,.7,.2,1);
  --shell:1200px;
  --radius:14px;
  --measure:34em;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:104px;
}
body{
  margin:0;
  background-color:var(--ink);
  background-image:
    radial-gradient(120% 90% at 10% -12%, rgba(22,227,210,.10), rgba(6,12,24,0) 58%),
    radial-gradient(90% 70% at 100% 0%, rgba(233,180,76,.06), rgba(6,12,24,0) 55%),
    linear-gradient(90deg, rgba(27,46,82,.22) 0 1px, transparent 1px),
    linear-gradient(0deg, rgba(27,46,82,.16) 0 1px, transparent 1px);
  background-size:auto,auto,96px 96px,96px 96px;
  color:var(--text);
  font-family:var(--font-body);
  font-size:var(--fs-16);
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
  min-height:100vh;
}
img,svg{max-width:100%;display:block}
ul,ol{margin:0;padding:0}
button{font:inherit}
:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:3px;
}

/* ---------- 中文排版 ---------- */
h1,h2,h3,h4{
  margin:0 0 .5em;
  color:var(--text-strong);
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.16;
  letter-spacing:-.02em;
}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
a{color:var(--cyan);text-decoration-thickness:1px;text-underline-offset:3px}
.xt-h1{font-size:clamp(34px,5.6vw,72px)}
.xt-h2{font-size:clamp(24px,3.4vw,40px)}
.xt-h3{font-size:clamp(19px,2.2vw,28px)}
.xt-lede{font-size:17px;line-height:1.8;color:#B9C5D8;max-width:var(--measure)}
.xt-serif{font-family:var(--font-serif)}
.xt-mono{font-family:var(--font-mono)}
.xt-note{font-size:13px;color:var(--mist)}

/* ---------- 跳转链接 ---------- */
.xt-skip{
  position:fixed;top:10px;left:10px;z-index:200;
  transform:translateY(-180%);
  padding:10px 18px;
  border-radius:999px;
  background:var(--cyan);
  color:#04121A;
  font-size:14px;font-weight:600;
  text-decoration:none;
  transition:transform .18s var(--ease);
}
.xt-skip:focus{transform:translateY(0)}

/* ---------- 容器 ---------- */
.xt-shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 20px}

/* ===========================================================
   头部
   =========================================================== */
.xt-progress{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:120;
  background:rgba(27,46,82,.55);
}
.xt-progress__bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--gold));
}

.xt-header{
  position:sticky;top:0;z-index:100;
  padding:14px 16px 0;
  transition:padding .26s var(--ease);
}
.xt-header.is-scrolled{padding-top:8px}

.xt-capsule{
  position:relative;
  display:flex;align-items:center;gap:14px;
  max-width:var(--shell);
  margin:0 auto;
  padding:9px 13px 9px 16px;
  border:1px solid var(--edge);
  border-radius:999px;
  background:rgba(13,26,49,.72);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:0 22px 46px -32px rgba(0,0,0,.95),inset 0 1px 0 rgba(147,160,184,.14);
  transition:max-width .26s var(--ease),background .26s var(--ease),
             border-color .26s var(--ease),padding .26s var(--ease);
}
.xt-header.is-scrolled .xt-capsule{
  max-width:1140px;
  padding:7px 11px 7px 14px;
  background:rgba(7,14,28,.92);
  border-color:rgba(22,227,210,.28);
}

/* 品牌 */
.xt-brand{
  display:inline-flex;align-items:center;gap:10px;
  flex:0 0 auto;
  color:var(--text-strong);
  text-decoration:none;
}
.xt-brand__mark{
  display:grid;place-items:center;
  width:34px;height:34px;
  border-radius:11px;
  background:linear-gradient(150deg,var(--cyan),#0b8f8b 72%);
  color:#04121A;
  font-family:var(--font-display);
  font-size:18px;font-weight:700;line-height:1;
  box-shadow:0 0 0 1px rgba(22,227,210,.35),0 8px 20px -12px rgba(22,227,210,.9);
}
.xt-brand__text{display:flex;flex-direction:column;line-height:1.2}
.xt-brand__name{font-family:var(--font-display);font-size:17px;font-weight:700;letter-spacing:.01em}
.xt-brand__tag{font-size:11.5px;color:var(--mist);letter-spacing:.02em}

/* 导航 */
.xt-nav{
  display:flex;flex:1 1 auto;align-items:center;justify-content:space-between;
  gap:16px;min-width:0;
}
.xt-nav__list{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0}
.xt-nav__item{list-style:none}
.xt-nav__link{
  display:block;
  padding:7px 12px;
  border-radius:999px;
  color:var(--mist);
  font-size:14.5px;line-height:1.4;
  text-decoration:none;
  white-space:nowrap;
  transition:color .12s var(--ease),background .12s var(--ease),box-shadow .12s var(--ease);
}
.xt-nav__link:hover{color:var(--text-strong);background:rgba(22,227,210,.09)}
.xt-nav__link:focus-visible{outline-offset:2px}
.xt-nav__link[aria-current="page"]{
  color:var(--cyan);
  background:rgba(22,227,210,.12);
  box-shadow:inset 0 -2px 0 var(--cyan);
}
.xt-nav__aside{display:flex;align-items:center;gap:10px;flex:0 0 auto}

/* 状态灯 */
.xt-status{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 11px;
  border:1px solid var(--edge);
  border-radius:999px;
  color:var(--mist);
  font-family:var(--font-mono);
  font-size:11.5px;letter-spacing:.04em;
  white-space:nowrap;
}
.xt-status__dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(22,227,210,.16);
}

/* 移动菜单按钮 */
.xt-navtoggle{
  display:none;
  align-items:center;gap:10px;
  margin-left:auto;
  padding:8px 14px;
  border:1px solid var(--edge);
  border-radius:999px;
  background:rgba(6,12,24,.6);
  color:var(--text);
  font-size:13.5px;line-height:1;
  cursor:pointer;
  transition:border-color .12s var(--ease),color .12s var(--ease);
}
.xt-navtoggle:hover{border-color:rgba(22,227,210,.55);color:var(--cyan)}
.xt-navtoggle__bars{display:inline-flex;flex-direction:column;gap:3px;width:16px}
.xt-navtoggle__bars span{
  display:block;height:1.5px;width:100%;
  background:currentColor;border-radius:2px;
  transition:transform .18s var(--ease),opacity .18s var(--ease);
}
.xt-navtoggle[aria-expanded="true"] .xt-navtoggle__bars span:nth-child(1){transform:translateY(4.5px) rotate(45deg)}
.xt-navtoggle[aria-expanded="true"] .xt-navtoggle__bars span:nth-child(2){opacity:0}
.xt-navtoggle[aria-expanded="true"] .xt-navtoggle__bars span:nth-child(3){transform:translateY(-4.5px) rotate(-45deg)}

@media (max-width:1040px){
  .xt-navtoggle{display:inline-flex}
  .xt-brand__tag{display:none}
  .xt-nav{
    position:absolute;
    left:0;right:0;top:calc(100% + 10px);
    flex-direction:column;align-items:stretch;gap:12px;
    padding:14px;
    border:1px solid var(--edge);
    border-radius:20px;
    background:rgba(7,14,28,.97);
    -webkit-backdrop-filter:blur(16px);
    backdrop-filter:blur(16px);
    box-shadow:0 34px 64px -34px rgba(0,0,0,1);
    opacity:0;visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s;
  }
  .xt-nav[data-open]{
    opacity:1;visibility:visible;transform:translateY(0);
  }
  .xt-nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .xt-nav__link{padding:11px 14px;border-radius:12px;font-size:15px}
  .xt-nav__link[aria-current="page"]{box-shadow:inset 0 0 0 1px rgba(22,227,210,.5)}
  .xt-nav__aside{flex-direction:column;align-items:stretch;gap:10px}
  .xt-status{justify-content:center}
}

/* ===========================================================
   通用按钮 / 标签
   =========================================================== */
.xt-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 18px;
  border:1px solid var(--edge);
  border-radius:999px;
  background:rgba(13,26,49,.85);
  color:var(--text);
  font-size:14px;line-height:1;
  text-decoration:none;
  cursor:pointer;
  transition:background .12s var(--ease),border-color .12s var(--ease),
             color .12s var(--ease),transform .12s var(--ease);
}
.xt-btn:hover{border-color:rgba(22,227,210,.5);color:var(--cyan)}
.xt-btn--cyan{background:var(--cyan);border-color:var(--cyan);color:#04121A;font-weight:600}
.xt-btn--cyan:hover{background:#3BF0E1;border-color:#3BF0E1;color:#04121A}
.xt-btn--ghost{background:transparent;border-color:rgba(22,227,210,.45);color:var(--cyan)}
.xt-btn--ghost:hover{background:rgba(22,227,210,.1)}
.xt-btn--gold{background:transparent;border-color:rgba(233,180,76,.5);color:var(--gold)}
.xt-btn--gold:hover{background:rgba(233,180,76,.12);color:#F3C671}
.xt-btn--sm{padding:7px 13px;font-size:13px}
.xt-btn--block{width:100%}

.xt-tag{
  display:inline-block;
  padding:3px 8px;
  border:1px solid var(--edge);
  border-radius:5px;
  color:var(--mist);
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.06em;
  line-height:1.6;
}
.xt-tag--cyan{color:var(--cyan);border-color:rgba(22,227,210,.42);background:rgba(22,227,210,.08)}
.xt-tag--gold{color:var(--gold);border-color:rgba(233,180,76,.45);background:rgba(233,180,76,.08)}
.xt-tag--change{color:var(--orange);border-color:rgba(226,112,58,.5);background:rgba(226,112,58,.1)}

/* ===========================================================
   页脚
   =========================================================== */
.xt-footer{
  position:relative;
  margin-top:76px;
  border-top:1px solid var(--edge);
  background:linear-gradient(180deg,rgba(13,26,49,.94),rgba(6,12,24,1) 72%);
  color:#C3CEDF;
  font-size:14.5px;
}
.xt-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(22,227,210,.55),rgba(233,180,76,.4),transparent);
}
.xt-footer__inner{padding-top:52px;padding-bottom:30px}

.xt-footer__grid{
  display:grid;
  grid-template-columns:minmax(0,1.6fr) repeat(3,minmax(0,1fr));
  gap:36px 28px;
}
.xt-footer__brand{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.xt-footer__line{margin:0;max-width:30em;color:var(--mist);font-size:13.5px;line-height:1.8}
.xt-footer__ver{display:flex;gap:8px;margin:0}

.xt-footer__title{
  display:flex;align-items:center;gap:9px;
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:12px;font-weight:500;
  letter-spacing:.08em;
  color:var(--text);
}
.xt-footer__list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.xt-footer__item{list-style:none}
.xt-footer__link{
  display:inline-block;
  padding:5px 0;
  color:#AEBACE;
  font-size:14px;
  text-decoration:none;
  transition:color .12s var(--ease),transform .12s var(--ease);
}
.xt-footer__link::before{
  content:"";display:inline-block;
  width:0;height:1px;margin-right:0;
  background:var(--cyan);
  vertical-align:middle;
  transition:width .18s var(--ease),margin-right .18s var(--ease);
}
.xt-footer__link:hover{color:var(--cyan);transform:translateX(2px)}
.xt-footer__link:hover::before{width:10px;margin-right:7px}
.xt-footer__link.is-current{color:var(--cyan)}

.xt-footer__contact{
  margin-top:42px;padding-top:26px;
  border-top:1px solid var(--edge);
}
.xt-contact{list-style:none;margin:0 0 14px;padding:0;display:flex;flex-wrap:wrap;gap:12px 34px}
.xt-contact__item{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.xt-contact__label{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--mist)}
.xt-contact__value{font-family:var(--font-mono);font-size:14px;color:var(--text-strong)}
.xt-contact__note{margin:0;max-width:64ch;color:var(--mist);font-size:13px;line-height:1.8}

.xt-copy{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;
  border:1px solid var(--edge);
  border-radius:999px;
  background:transparent;
  color:var(--mist);
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.04em;
  cursor:pointer;
  transition:color .12s var(--ease),border-color .12s var(--ease);
}
.xt-copy:hover{color:var(--cyan);border-color:rgba(22,227,210,.5)}
.xt-copy[data-copied]{color:var(--gold);border-color:rgba(233,180,76,.55)}

.xt-footer__bottom{
  margin-top:28px;padding-top:18px;
  border-top:1px solid var(--edge);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 26px;
  font-family:var(--font-mono);
  font-size:12.5px;letter-spacing:.02em;
  color:var(--mist);
}
.xt-footer__legal{display:flex;flex-wrap:wrap;gap:8px;margin:0}
.xt-footer__meta{margin:0}
.xt-footer__meta a{
  color:var(--cyan);
  text-decoration:none;
  border-bottom:1px solid rgba(22,227,210,.4);
}
.xt-dot{color:#33456B}

/* 返回顶部 */
.xt-totop{
  position:fixed;
  right:18px;bottom:18px;z-index:90;
  width:46px;height:46px;
  border-radius:50%;
  border:1px solid var(--edge);
  background:rgba(7,14,28,.92);
  color:var(--cyan);
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.08em;
  cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .18s var(--ease),transform .18s var(--ease),
             visibility .18s,border-color .12s var(--ease);
}
.xt-totop[data-visible]{opacity:1;visibility:visible;transform:translateY(0)}
.xt-totop:hover{border-color:rgba(22,227,210,.6)}

/* ===========================================================
   正文容器 / 章节 / 网格
   =========================================================== */
.xt-section{padding:56px 0}
.xt-section--tight{padding:32px 0}
.xt-section + .xt-section{border-top:1px solid var(--edge)}
.xt-section__head{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:12px 16px;
  margin-bottom:22px;
}
.xt-section__head .xt-h2,.xt-section__head .xt-h3{margin:0}
.xt-modnum{
  display:inline-block;
  padding:3px 7px;
  border:1px solid rgba(22,227,210,.32);
  border-radius:6px;
  background:rgba(22,227,210,.07);
  color:var(--cyan);
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.06em;line-height:1.5;
}

.xt-grid{display:grid;gap:28px 24px;grid-template-columns:repeat(12,minmax(0,1fr))}
.xt-grid--7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.xt-grid--5-7{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
.xt-grid--4-8{grid-template-columns:minmax(0,4fr) minmax(0,8fr)}
.xt-grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.xt-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.xt-col{min-width:0}
.xt-col--4{grid-column:span 4}
.xt-col--5{grid-column:span 5}
.xt-col--6{grid-column:span 6}
.xt-col--7{grid-column:span 7}
.xt-col--8{grid-column:span 8}
.xt-col--12{grid-column:1 / -1}

/* ---------- 材质层 ---------- */
.xt-glass{
  border:1px solid var(--edge);
  border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(13,26,49,.88),rgba(9,18,34,.72));
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  padding:22px;
}
.xt-card{
  border:1px solid var(--edge);
  border-radius:var(--radius);
  background:rgba(13,26,49,.62);
  padding:20px;
  transition:border-color .12s var(--ease),transform .12s var(--ease),background .12s var(--ease);
}
.xt-card:hover{border-color:rgba(22,227,210,.5);background:rgba(13,26,49,.82);transform:translateY(-2px)}
.xt-paper{
  border:1px solid #D9CDB4;
  border-radius:var(--radius);
  background:var(--paper);
  color:var(--paper-ink);
  padding:26px;
}
.xt-paper h1,.xt-paper h2,.xt-paper h3,.xt-paper h4{color:var(--paper-ink)}
.xt-paper a{color:#0B5F5C;text-decoration:underline}
.xt-paper .xt-lede,.xt-paper p{color:#28344A}
.xt-paper .xt-note{color:#4B566B}
.xt-paper .xt-modnum{color:var(--cyan-deep);border-color:rgba(14,143,138,.4);background:rgba(14,143,138,.1)}
.xt-paper .xt-tag{color:#3A4658;border-color:#C9BC9F}
.xt-paper .xt-num{color:#8A5F12}

/* ---------- 图片容器基础规则 ---------- */
.xt-media{
  position:relative;
  overflow:hidden;
  border:1px solid var(--edge);
  border-radius:12px;
  background:linear-gradient(150deg,#0B1B33,#060C18 70%);
  isolation:isolate;
}
.xt-media::after{
  content:"";
  position:absolute;inset:0;z-index:2;
  pointer-events:none;
  background:
    repeating-linear-gradient(90deg,rgba(22,227,210,.07) 0 1px,transparent 1px 40px),
    repeating-linear-gradient(0deg,rgba(22,227,210,.05) 0 1px,transparent 1px 40px);
}
.xt-media > img,
.xt-media > svg,
.xt-media > picture,
.xt-media__inner{
  width:100%;height:100%;
  object-fit:cover;
  display:block;
}
.xt-media--16x9{aspect-ratio:16 / 9}
.xt-media--4x3{aspect-ratio:4 / 3}
.xt-media--1x1{aspect-ratio:1 / 1}
.xt-media--wide{aspect-ratio:21 / 9}
.xt-media--tall{aspect-ratio:3 / 4}
.xt-figure{margin:0}
.xt-figure__cap{
  margin-top:8px;
  color:var(--mist);
  font-family:var(--font-mono);
  font-size:11.5px;letter-spacing:.03em;
}

/* ---------- 分段切换 ---------- */
.xt-tabs{display:block}
.xt-tablist{
  display:inline-flex;flex-wrap:wrap;gap:4px;
  padding:4px;
  border:1px solid var(--edge);
  border-radius:999px;
  background:rgba(13,26,49,.72);
}
.xt-tab{
  appearance:none;
  border:0;
  padding:7px 16px;
  border-radius:999px;
  background:transparent;
  color:var(--mist);
  font-size:14px;line-height:1.5;
  cursor:pointer;
  transition:background .12s var(--ease),color .12s var(--ease);
}
.xt-tab:hover{color:var(--text-strong);background:rgba(22,227,210,.1)}
.xt-tab[aria-selected="true"]{background:var(--cyan);color:#04121A;font-weight:600}
.xt-panel{padding-top:20px}
.xt-panel[hidden]{display:none}

/* ---------- 折叠面板 ---------- */
.xt-details{
  border:1px solid var(--edge);
  border-radius:12px;
  background:rgba(13,26,49,.55);
  padding:0 18px;
}
.xt-details + .xt-details{margin-top:10px}
.xt-details summary{
  display:flex;align-items:baseline;gap:12px;
  padding:15px 0;
  list-style:none;
  color:var(--text-strong);
  font-weight:600;
  cursor:pointer;
}
.xt-details summary::-webkit-details-marker{display:none}
.xt-details summary::before{
  content:"＋";
  font-family:var(--font-mono);
  font-size:14px;line-height:1;
  color:var(--cyan);
}
.xt-details[open] summary::before{content:"－"}
.xt-details__body{padding:0 0 18px;color:#C3CEDF}
.xt-details__body p:last-child{margin-bottom:0}

/* ---------- 时间线 ---------- */
.xt-timeline{list-style:none;margin:0;padding:0 0 0 22px;border-left:1px solid var(--edge)}
.xt-timeline__item{position:relative;padding:0 0 26px}
.xt-timeline__item:last-child{padding-bottom:4px}
.xt-timeline__item::before{
  content:"";
  position:absolute;left:-27px;top:9px;
  width:8px;height:8px;border-radius:50%;
  background:#1B2E52;
  border:1px solid var(--edge);
  transition:background .2s var(--ease),box-shadow .2s var(--ease);
}
.xt-timeline__item.xt-reveal.is-in::before{
  background:var(--cyan);
  box-shadow:0 0 0 4px rgba(22,227,210,.14);
}
.xt-timeline__date{
  display:block;
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.04em;
  color:var(--mist);
}
.xt-timeline__title{
  margin:4px 0 4px;
  font-family:var(--font-display);
  font-size:19px;font-weight:700;
  color:var(--text-strong);
  letter-spacing:-.01em;
}

/* ---------- 对照表 ---------- */
.xt-table{width:100%;border-collapse:collapse;font-size:15px}
.xt-table th,
.xt-table td{padding:12px 14px;border-bottom:1px solid var(--edge);text-align:left;vertical-align:middle}
.xt-table th{
  font-family:var(--font-mono);
  font-size:12px;font-weight:500;letter-spacing:.05em;
  color:var(--mist);
}
.xt-table tbody tr{transition:background .12s var(--ease),box-shadow .12s var(--ease)}
.xt-table tbody tr:hover{background:rgba(22,227,210,.06);box-shadow:inset 2px 0 0 var(--cyan)}
.xt-num{
  display:inline-block;
  font-family:var(--font-mono);
  font-weight:600;
  font-size:22px;
  letter-spacing:-.01em;
  color:var(--gold);
  transition:transform .12s var(--ease),color .12s var(--ease);
}
.xt-num--lg{font-size:clamp(30px,4vw,56px)}
.xt-table tbody tr:hover .xt-num{transform:scale(1.04);color:#F3C671}

/* ---------- 流程步骤 ---------- */
.xt-steps{list-style:none;margin:0;padding:0;display:grid;gap:12px;counter-reset:step}
.xt-steps__item{
  position:relative;
  padding:16px 18px 16px 58px;
  border:1px solid var(--edge);
  border-radius:12px;
  background:rgba(13,26,49,.5);
  transition:border-color .12s var(--ease),background .12s var(--ease);
}
.xt-steps__item:hover{border-color:rgba(22,227,210,.45);background:rgba(13,26,49,.75)}
.xt-steps__item::before{
  counter-increment:step;
  content:"0" counter(step);
  position:absolute;left:16px;top:17px;
  font-family:var(--font-mono);
  font-size:13px;letter-spacing:.06em;
  color:var(--cyan);
}
.xt-steps__item::after{
  content:"";
  position:absolute;left:26px;bottom:-13px;
  width:1px;height:12px;
  background:var(--edge);
}
.xt-steps__item:last-child::after{display:none}

/* ---------- 索引地图 ---------- */
.xt-index{list-style:none;margin:0;padding:0;border-top:1px solid var(--edge)}
.xt-index__item{border-bottom:1px solid var(--edge);list-style:none}
.xt-index__link{
  display:flex;align-items:baseline;gap:14px;
  padding:14px 4px;
  color:var(--text);
  text-decoration:none;
  transition:color .12s var(--ease),padding-left .12s var(--ease),background .12s var(--ease);
}
.xt-index__link:hover{color:var(--cyan);padding-left:12px;background:rgba(22,227,210,.05)}
.xt-index__num{font-family:var(--font-mono);font-size:12px;color:var(--mist);flex:0 0 auto}
.xt-index__label{flex:1 1 auto;font-size:15.5px}
.xt-index__meta{
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:12px;color:var(--mist);
}

/* ---------- 面包屑 ---------- */
.xt-crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:18px 0 0;
  font-family:var(--font-mono);
  font-size:12.5px;letter-spacing:.02em;
  color:var(--mist);
}
.xt-crumbs__link{color:var(--mist);text-decoration:none;transition:color .12s var(--ease)}
.xt-crumbs__link:hover{color:var(--cyan)}
.xt-crumbs__sep{color:#33456B}
.xt-crumbs__current{color:var(--text)}

/* ---------- 侧栏锚点目录 ---------- */
.xt-anchor{list-style:none;margin:0;padding:0;font-size:14px}
.xt-anchor__item{list-style:none}
.xt-anchor__link{
  display:block;
  padding:7px 12px;
  border-left:1px solid var(--edge);
  color:var(--mist);
  text-decoration:none;
  transition:color .12s var(--ease),border-color .12s var(--ease),background .12s var(--ease);
}
.xt-anchor__link:hover{color:var(--text-strong);background:rgba(22,227,210,.05)}
.xt-anchor__link.is-active,
.xt-anchor__link[aria-current="true"]{
  color:var(--cyan);
  border-left-color:var(--cyan);
  background:rgba(22,227,210,.07);
}

/* ---------- 显现 ---------- */
.xt-reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .26s var(--ease),transform .26s var(--ease);
}
.xt-reveal.is-in{opacity:1;transform:none}

/* ===========================================================
   响应式
   =========================================================== */
@media (max-width:1040px){
  .xt-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px}
  .xt-footer__brand{grid-column:1 / -1}
  .xt-footer__grid > .xt-footer__col:last-child{grid-column:1 / -1}
}
@media (max-width:900px){
  .xt-grid,
  .xt-grid--7-5,
  .xt-grid--5-7,
  .xt-grid--4-8,
  .xt-grid--2,
  .xt-grid--3{grid-template-columns:minmax(0,1fr)}
  .xt-col--4,.xt-col--5,.xt-col--6,.xt-col--7,.xt-col--8{grid-column:1 / -1}
  .xt-section{padding:40px 0}
  .xt-section--tight{padding:24px 0}
}
@media (max-width:640px){
  body{font-size:15.5px}
  .xt-shell{padding:0 16px}
  .xt-header{padding:10px 10px 0}
  .xt-capsule{padding:8px 11px 8px 13px;gap:10px}
  .xt-header.is-scrolled .xt-capsule{max-width:100%}
  .xt-footer{margin-top:56px}
  .xt-footer__inner{padding-top:38px;padding-bottom:24px}
  .xt-footer__grid{grid-template-columns:minmax(0,1fr)}
  .xt-footer__contact{margin-top:30px;padding-top:22px}
  .xt-contact{flex-direction:column;gap:12px}
  .xt-footer__bottom{flex-direction:column;align-items:flex-start}
  .xt-paper{padding:20px}
  .xt-glass,.xt-card{padding:16px}
  .xt-totop{right:12px;bottom:12px;width:42px;height:42px}
  .xt-tablist{width:100%;justify-content:center}
}

/* ---------- 无障碍降级 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.12s !important;
  }
  .xt-reveal{opacity:1;transform:none}
  .xt-progress__bar{transition:none}
  .xt-nav__link,.xt-footer__link{transform:none !important}
}