/* ============================================================
   777游戏开 — /assets/site.css
   共享外壳：重置、变量、中文排版、头部、页脚、按钮、标签、
   面包屑、容器、栅格、图片容器、基础动效
   ============================================================ */

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,dl,dt,dd,figure,blockquote{margin:0;padding:0}
ul,ol{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;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}

:root{
  --ink:#0B0714;
  --ink-2:#17102B;
  --ink-3:#221838;
  --paper:#F3EBDC;
  --paper-2:#E6DAC4;
  --paper-line:#CFC3AC;
  --volt:#7A3BFF;
  --volt-lift:#A98CFF;
  --cyan:#2FF3E0;
  --cyan-deep:#0F8F88;
  --amber:#FFB000;
  --coral:#FF5D73;
  --ink-text:#E9E4F6;
  --ink-mute:#9C92BA;
  --paper-text:#1A1428;
  --paper-mute:#5B5342;
  --line-ink:rgba(233,228,246,.14);
  --line-cyan:rgba(47,243,224,.34);
  --font-display:"Space Grotesk","Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono","SFMono-Regular",ui-monospace,"Noto Sans SC",monospace;
  --gutter:24px;
  --shell:1240px;
  --pad:64px;
  --header-h:96px;
}

body{
  background:var(--ink);
  color:var(--ink-text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

::selection{background:var(--volt);color:#fff}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.section--paper :focus-visible,.section--paper-edge :focus-visible{outline-color:var(--volt)}

#main-content{display:block;scroll-margin-top:120px}

/* ---------------- 排版体系 ---------------- */
.type-hero{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(52px,9vw,140px);
  line-height:.94;
  letter-spacing:-.03em;
}
.type-h2{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(30px,4.2vw,44px);
  line-height:1.08;
  letter-spacing:-.02em;
}
.type-h3{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(20px,2.4vw,26px);
  line-height:1.2;
  letter-spacing:-.01em;
}
.lead{
  font-size:clamp(17px,1.6vw,19px);
  line-height:1.7;
  color:var(--ink-mute);
  max-width:38ch;
}
.mono{
  font-family:var(--font-mono);
  letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.18em;
  line-height:1.2;
  color:var(--cyan);
}
.eyebrow::before{
  content:"";
  width:26px;
  height:1px;
  background:currentColor;
  flex:none;
}
.annotation{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  line-height:1.2;
  color:var(--ink-mute);
}
.annotation--vertical{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  letter-spacing:.3em;
}

/* ---------------- 容器与栅格 ---------------- */
.container{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--pad);
}
.grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--gutter);
}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-12{grid-column:span 12}

.section{position:relative;padding-block:96px}
.section--tight{padding-block:64px}
.section--ink{background:var(--ink)}
.section--ink-2{background:var(--ink-2)}
.section--paper{background:var(--paper);color:var(--paper-text)}
.section--paper .lead,.section--paper .annotation{color:var(--paper-mute)}
.section--paper-edge{
  position:relative;
  isolation:isolate;
  color:var(--paper-text);
  padding-block:112px;
}
.section--paper-edge::before{
  content:"";
  position:absolute;
  z-index:-1;
  top:0;
  bottom:0;
  left:50%;
  width:100vw;
  transform:translateX(-50%);
  background:var(--paper);
  clip-path:polygon(0 3.4vw,100% 0,100% calc(100% - 3.4vw),0 100%);
}
.section--paper-edge .lead,.section--paper-edge .annotation{color:var(--paper-mute)}

.tick-rule{
  --tick:rgba(207,195,172,.5);
  height:16px;
  border-bottom:1px solid rgba(207,195,172,.32);
  background-image:
    repeating-linear-gradient(90deg,var(--tick) 0 1px,transparent 1px 64px),
    repeating-linear-gradient(90deg,var(--tick) 0 1px,transparent 1px 8px);
  background-size:100% 16px,100% 7px;
  background-repeat:repeat-x;
  background-position:0 0,0 0;
}

/* ---------------- 按钮 ---------------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:13px 22px;
  border:1px solid transparent;
  border-radius:2px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.06em;
  line-height:1.2;
  text-align:center;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease,box-shadow .16s ease;
}
.btn--volt{background:var(--volt);border-color:var(--volt);color:#fff}
.btn--volt:hover{background:var(--volt-lift);border-color:var(--volt-lift);color:var(--ink);box-shadow:0 0 0 1px rgba(47,243,224,.55)}
.btn--ghost{background:transparent;border-color:var(--line-cyan);color:var(--cyan)}
.btn--ghost:hover{background:rgba(47,243,224,.1);border-color:var(--cyan)}
.btn--paper{background:var(--paper);border-color:var(--paper-line);color:var(--paper-text)}
.btn--paper:hover{background:#fff;border-color:var(--paper-text)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.42;cursor:not-allowed;box-shadow:none}
.btn:active{transform:translateY(1px)}

/* ---------------- 标签 ---------------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:5px;
  padding:3px 9px;
  border:1px solid currentColor;
  border-radius:999px;
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.2;
  letter-spacing:.04em;
  white-space:nowrap;
}
.tag--history{color:var(--amber);background:rgba(255,176,0,.1)}
.tag--update{color:var(--ink);background:var(--amber);border-color:var(--amber)}
.tag--version{color:var(--cyan);background:rgba(47,243,224,.08)}

/* ---------------- 面包屑 ---------------- */
.breadcrumb{margin-bottom:26px}
.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--ink-mute);
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__link{
  color:var(--ink-mute);
  border-bottom:1px solid transparent;
  transition:color .16s ease,border-color .16s ease;
}
.breadcrumb__link:hover{color:var(--cyan);border-bottom-color:var(--amber)}
.breadcrumb__sep{color:var(--paper-line);opacity:.5}
.breadcrumb__item[aria-current="page"]{color:var(--paper)}

/* ---------------- 图片容器 ---------------- */
.media{
  position:relative;
  overflow:hidden;
  background:var(--ink-3);
  border:1px solid rgba(47,243,224,.16);
  border-radius:3px;
}
.media > img,
.media > svg,
.media > .media__img{width:100%;height:100%;object-fit:cover;display:block}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:3/4}
.media--pixel{image-rendering:pixelated}
.media--placeholder{
  background-image:repeating-linear-gradient(45deg,rgba(122,59,255,.18) 0 8px,transparent 8px 16px);
}
.media__caption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:10px 12px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.05em;
  color:var(--ink-text);
  background:linear-gradient(0deg,rgba(11,7,20,.92),rgba(11,7,20,0));
}

/* ---------------- 操作反馈行 ---------------- */
.status-line{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--ink-mute);
  border-left:2px solid var(--cyan-deep);
  padding-left:10px;
  margin-bottom:16px;
}
.status-line[data-state="empty"]{color:var(--coral);border-left-color:var(--coral)}

/* ---------------- 显现 ---------------- */
.reveal{transition:opacity .24s ease,transform .24s ease}
.has-js .reveal{opacity:0;transform:translateY(8px)}
.has-js .reveal.is-in{opacity:1;transform:none}

/* ---------------- 跳转链接 ---------------- */
.skip-link{
  position:fixed;
  top:0;left:0;
  z-index:300;
  transform:translateY(-130%);
  background:var(--cyan);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.06em;
  padding:12px 22px;
  transition:transform .16s ease;
}
.skip-link:focus{transform:translateY(0)}

/* ============================================================
   头部
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--ink);
  border-bottom:1px solid var(--line-cyan);
}
.site-header__inner{
  display:flex;
  align-items:center;
  gap:22px;
  padding-block:13px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:none;
  color:var(--ink-text);
}
.brand__mark{
  display:grid;
  place-items:center;
  width:46px;
  height:46px;
  flex:none;
  background:var(--volt);
  color:var(--paper);
  font-family:var(--font-mono);
  font-weight:700;
  font-size:15px;
  letter-spacing:.04em;
  clip-path:polygon(0 0,100% 0,100% 82%,86% 100%,0 100%);
  transition:background-color .16s ease,color .16s ease;
}
.brand:hover .brand__mark{background:var(--cyan);color:var(--ink)}
.brand__text{display:flex;flex-direction:column;gap:4px}
.brand__name{
  display:block;
  font-family:var(--font-display);
  font-weight:900;
  font-size:17px;
  line-height:1.1;
  letter-spacing:-.01em;
}
.brand__tagline{
  display:block;
  font-size:11px;
  line-height:1.2;
  letter-spacing:.02em;
  color:var(--ink-mute);
}

/* 导航 */
.site-nav{margin-inline-start:6px}
.site-nav__list{display:flex;align-items:stretch}
.site-nav__item{display:flex}
.site-nav__item + .site-nav__item{border-left:1px solid var(--line-ink)}
.site-nav__link{
  position:relative;
  display:flex;
  align-items:baseline;
  gap:7px;
  padding:11px 12px;
  color:var(--ink-text);
  font-size:13.5px;
  line-height:1;
  transition:color .16s ease,background-color .16s ease;
}
.site-nav__index{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.04em;
  color:var(--volt-lift);
  transition:color .16s ease;
}
.site-nav__label{white-space:nowrap}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:5px;
  height:2px;
  background:var(--amber);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .16s ease;
}
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{background:var(--volt);color:var(--paper)}
.site-nav__link[aria-current="page"] .site-nav__index{color:var(--cyan)}
.site-nav__link[aria-current="page"]::after{display:none}

/* 右侧操作区 */
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-inline-start:auto;
  flex:none;
}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:10px 12px;
  border:1px solid var(--line-ink);
  border-radius:2px;
  color:var(--ink-text);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  line-height:1;
  transition:border-color .16s ease,color .16s ease,background-color .16s ease;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{display:grid;gap:4px;width:16px}
.nav-toggle__bars span{display:block;height:2px;background:currentColor}
.nav-toggle[aria-expanded="true"]{
  border-color:var(--cyan);
  color:var(--cyan);
  background:rgba(47,243,224,.08);
}

/* 历史栏目抽屉 */
.drawer{position:relative}
.drawer__toggle{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 14px;
  border:1px solid var(--line-ink);
  border-radius:2px;
  color:var(--ink-text);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  line-height:1;
  transition:border-color .16s ease,color .16s ease,background-color .16s ease;
}
.drawer__dot{
  width:7px;height:7px;
  flex:none;
  border-radius:50%;
  background:var(--amber);
  box-shadow:0 0 0 3px rgba(255,176,0,.16);
}
.drawer__label{white-space:nowrap}
.drawer__toggle:hover{border-color:var(--amber);color:var(--amber)}
.drawer__toggle:active{transform:translateY(1px)}
.drawer__toggle[aria-expanded="true"]{
  background:var(--amber);
  border-color:var(--amber);
  color:var(--ink);
}
.drawer__toggle[aria-expanded="true"] .drawer__dot{background:var(--ink);box-shadow:none}

.drawer__panel{
  position:absolute;
  top:calc(100% + 12px);
  right:0;
  z-index:95;
  width:min(348px,calc(100vw - 40px));
  padding:18px 20px 22px;
  background:var(--ink-2);
  border:1px solid var(--line-cyan);
  clip-path:polygon(0 0,100% 0,100% 92%,0 100%);
  box-shadow:0 26px 54px rgba(0,0,0,.55);
  animation:drawer-in .18s ease-out;
}
.drawer__panel[hidden]{display:none}
@keyframes drawer-in{
  from{opacity:0;transform:translateY(-6px)}
  to{opacity:1;transform:none}
}
.drawer__head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line-ink);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--cyan);
}
.drawer__head-mono{font-size:10px;letter-spacing:.18em;color:var(--ink-mute)}
.drawer__list{display:grid;gap:2px;margin-top:10px}
.drawer__link{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:4px 10px;
  padding:10px 9px;
  border-left:2px solid transparent;
  transition:background-color .16s ease,border-color .16s ease;
}
.drawer__link:hover{
  background:rgba(122,59,255,.18);
  border-left-color:var(--volt);
}
.drawer__link:active{background:rgba(122,59,255,.28)}
.drawer__ver{
  width:100%;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.04em;
  color:var(--volt-lift);
}
.drawer__name{font-size:14px;line-height:1.4;color:var(--ink-text)}
.drawer__note{
  margin-top:14px;
  padding-top:10px;
  border-top:1px solid var(--line-ink);
  font-size:11px;
  line-height:1.65;
  color:var(--ink-mute);
}

/* 状态条 */
.status-strip{background:var(--ink-2);border-top:1px solid var(--line-ink)}
.status-strip__inner{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px 14px;
  padding-block:7px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  line-height:1.4;
  color:var(--ink-mute);
}
.status-strip__chip{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:2px 9px;
  border:1px solid var(--line-cyan);
  border-radius:2px;
  color:var(--cyan);
}
.status-strip__chip::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--cyan);
  animation:pulse 2.6s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(47,243,224,.5)}
  50%{opacity:.55;box-shadow:0 0 0 4px rgba(47,243,224,0)}
}
.status-strip__sep{color:var(--paper-line);opacity:.45}

/* 阅读进度线 */
.scroll-meter{
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;
  pointer-events:none;
  overflow:hidden;
}
.scroll-meter__bar{
  display:block;
  width:100%;
  height:100%;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:0 50%;
  will-change:transform;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  background:var(--ink-2);
  color:var(--ink-text);
  border-top:1px solid var(--line-ink);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;
  width:min(46vw,540px);
  height:3px;
  background:linear-gradient(90deg,var(--volt),var(--cyan));
}
.site-footer__inner{padding-block:76px 30px}
.site-footer__grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:44px var(--gutter);
}
.site-footer__brand{grid-column:span 4}
.site-footer__brand .brand__mark{width:40px;height:40px;font-size:13px}
.site-footer__intro{
  margin-top:20px;
  max-width:30ch;
  font-size:14px;
  line-height:1.75;
  color:var(--ink-mute);
}
.site-footer__meta{
  margin-top:14px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  line-height:1.5;
  color:var(--paper-line);
}
.site-footer__meta .mono{color:var(--cyan)}

.footer-nav{
  grid-column:span 5;
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.footer-nav__group{min-width:0}
.footer-nav__title{
  margin-bottom:12px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line-ink);
  font-family:var(--font-mono);
  font-weight:400;
  font-size:11px;
  letter-spacing:.16em;
  line-height:1.3;
  color:var(--cyan);
}
.footer-nav__list{display:grid;gap:9px}
.footer-nav__link{
  position:relative;
  display:inline-block;
  padding-bottom:1px;
  font-size:13.5px;
  line-height:1.5;
  color:var(--ink-mute);
  transition:color .16s ease;
}
.footer-nav__link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--amber);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .16s ease;
}
.footer-nav__link:hover{color:var(--paper)}
.footer-nav__link:hover::after{transform:scaleX(1)}

.footer-contact{grid-column:span 3;min-width:0}
.footer-contact__list{display:grid;gap:13px}
.footer-contact__row{display:grid;gap:2px}
.footer-contact__key{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  line-height:1.4;
  color:var(--paper-line);
}
.footer-contact__val{
  font-size:13px;
  line-height:1.55;
  color:var(--ink-text);
  overflow-wrap:anywhere;
}
.footer-contact__note{
  margin-top:16px;
  padding-left:10px;
  border-left:2px solid var(--cyan-deep);
  font-size:11.5px;
  line-height:1.7;
  color:var(--ink-mute);
}

.site-footer__bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 28px;
  margin-top:56px;
  padding-top:18px;
  border-top:1px solid var(--line-ink);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.05em;
  line-height:1.5;
  color:var(--ink-mute);
}
.site-footer__legal{margin:0}
.site-footer__icp{margin:0;color:var(--paper-line)}
.site-footer__links{
  display:flex;
  flex-wrap:wrap;
  gap:8px 18px;
  margin-inline-start:auto;
}
.site-footer__links .footer-nav__link{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.05em;
}
.site-footer__rule{
  height:4px;
  background:linear-gradient(90deg,var(--volt),var(--cyan) 55%,var(--amber));
  opacity:.9;
}

/* ============================================================
   响应式：平板
   ============================================================ */
@media (max-width:1100px){
  :root{--pad:40px}
  .brand__tagline{display:none}
  .site-nav__link{padding:11px 10px;font-size:13px}
  .site-nav__link::after{left:10px;right:10px}
  .drawer__toggle,.nav-toggle{padding:10px 11px}
  .site-footer__brand{grid-column:span 5}
  .footer-nav{grid-column:span 7;grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer-contact{grid-column:span 12}
  .footer-contact__list{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
  .footer-contact__note{max-width:52ch}
}

@media (max-width:960px){
  .section{padding-block:72px}
  .section--paper-edge{padding-block:84px}
  .col-4,.col-5,.col-6,.col-7,.col-8{grid-column:span 12}
}

/* ============================================================
   响应式：移动导航
   ============================================================ */
@media (max-width:940px){
  :root{--pad:24px}
  .site-header__inner{gap:12px;padding-block:11px}
  .nav-toggle{display:inline-flex}
  .drawer__label{display:none}
  .drawer__toggle{padding:10px;gap:0}
  .site-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    margin:0;
    padding:8px 24px 18px;
    background:var(--ink-2);
    border-top:1px solid var(--line-cyan);
    border-bottom:1px solid var(--line-cyan);
    box-shadow:0 26px 48px rgba(0,0,0,.55);
    opacity:0;
    visibility:hidden;
    transform:translateY(-6px);
    transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
  }
  .site-nav[data-open]{
    opacity:1;
    visibility:visible;
    transform:none;
  }
  .site-nav__list{flex-direction:column;align-items:stretch}
  .site-nav__item + .site-nav__item{border-left:0;border-top:1px solid var(--line-ink)}
  .site-nav__link{padding:15px 4px;font-size:15px;gap:12px}
  .site-nav__link::after{left:4px;right:4px;bottom:8px}
  .site-nav__label{white-space:normal}
  .site-footer__grid{gap:36px var(--gutter)}
  .site-footer__brand,.footer-nav,.footer-contact{grid-column:span 12}
  .site-footer__inner{padding-block:56px 24px}
  .site-footer__bar{margin-top:40px}
}

/* ============================================================
   响应式：手机
   ============================================================ */
@media (max-width:600px){
  :root{--pad:20px}
  body{font-size:15.5px}
  .section{padding-block:56px}
  .section--paper-edge{padding-block:64px}
  .brand__mark{width:40px;height:40px;font-size:13px}
  .brand__name{font-size:15.5px}
  .drawer__panel{width:calc(100vw - 32px);padding:16px 16px 20px}
  .status-strip__inner{font-size:10.5px;gap:6px 10px}
  .status-strip__item:nth-of-type(2){display:none}
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
  .footer-contact__list{grid-template-columns:1fr}
  .site-footer__links{margin-inline-start:0;width:100%}
  .site-footer__bar{font-size:11px;gap:8px 16px}
}

/* ============================================================
   降低动效
   ============================================================ */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .has-js .reveal{opacity:1 !important;transform:none !important}
  .scroll-meter__bar{transition:none !important}
}