/* =========================================================
   奇迹电游主站 · 共享外壳样式 /assets/site.css
   设计语言：技术蓝图网格 · 青海湖深蓝 · 电光青 / 暖金
   ========================================================= */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{margin:0;min-height:100%}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
table{border-collapse:collapse;border-spacing:0}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
[hidden]{display:none !important}

/* ---------- 2. Tokens ---------- */
:root{
  color-scheme:dark;

  --abyss-950:#04121F;
  --abyss-900:#071B2B;
  --lake-800:#0C2E4A;
  --lake-600:#14507A;
  --lake-400:#2E7FA8;
  --spark-400:#34E4D6;
  --spark-600:#12A79C;
  --gold-400:#F2C14E;
  --gold-600:#C08A22;
  --jewel-indigo:#1B2A5E;
  --mist-050:#F3F7FA;
  --ink-900:#0B1620;
  --line-200:#C9D6E2;

  --bg:var(--abyss-950);
  --bg-panel:var(--abyss-900);
  --text-1:#E9F2F9;
  --text-2:#B7CCDC;
  --text-3:#7E96AA;
  --hairline:rgba(46,127,168,.28);
  --hairline-soft:rgba(201,214,226,.14);
  --hairline-strong:rgba(52,228,214,.45);

  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono","Courier New",monospace;

  --fs-12:12px;
  --fs-14:14px;
  --fs-16:16px;
  --fs-21:21px;
  --fs-28:28px;
  --fs-38:38px;
  --fs-51:51px;
  --fs-68:68px;
  --fs-90:90px;

  --shell:1280px;
  --shell-wide:1440px;
  --gutter:clamp(20px,4.6vw,64px);
  --radius:2px;
  --dur:200ms;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow-1:0 18px 40px -28px rgba(0,0,0,.9);
  --shadow-2:0 22px 48px -26px rgba(52,228,214,.35);
  --header-h:88px;
}

/* ---------- 3. 基础排版 ---------- */
body{
  background-color:var(--bg);
  background-image:
    linear-gradient(180deg,rgba(12,46,74,.55) 0,rgba(4,18,31,0) 460px),
    linear-gradient(to right,rgba(46,127,168,.10) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(46,127,168,.10) 1px,transparent 1px);
  background-size:auto,120px 120px,120px 120px;
  background-repeat:no-repeat,repeat,repeat;
  color:var(--text-2);
  font-family:var(--font-sans);
  font-size:var(--fs-16);
  line-height:1.75;
  font-weight:400;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6{color:var(--text-1);font-weight:800;line-height:1.16;letter-spacing:-.01em}
h1{font-size:clamp(38px,6vw,68px)}
h2{font-size:clamp(28px,3.6vw,38px)}
h3{font-size:clamp(21px,2.4vw,28px)}
h4{font-size:var(--fs-16);font-weight:700;letter-spacing:.02em}
strong{color:var(--text-1);font-weight:700}
::selection{background:var(--spark-400);color:var(--abyss-950)}

.mono{font-family:var(--font-mono);letter-spacing:.14em}
.coord{font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--text-3)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--spark-400);
}
.eyebrow::before{content:"";display:inline-block;width:18px;height:1px;background:currentColor}
.note{font-size:13px;line-height:1.8;color:var(--text-3);border-left:1px solid var(--hairline);padding-left:14px}
.rule{height:1px;border:0;background:var(--hairline);width:100%}
.link-more{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--spark-400);
  transition:gap var(--dur) var(--ease),color var(--dur) var(--ease);
}
.link-more::after{content:"\2192";transition:transform var(--dur) var(--ease)}
.link-more:hover{gap:12px}

:where(a,button,summary,[tabindex]):focus-visible{
  outline:2px solid var(--spark-400);
  outline-offset:3px;
  border-radius:var(--radius);
}

/* ---------- 4. 布局骨架 ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.shell--wide{max-width:var(--shell-wide)}
.section{padding-block:clamp(64px,9vw,128px)}
.section--tight{padding-block:clamp(40px,6vw,80px)}
.section--mist{background:var(--mist-050);color:#31485C;
  --text-1:var(--ink-900);--text-2:#31485C;--text-3:#5B7085;
  --hairline:rgba(11,22,32,.14);--hairline-strong:rgba(18,167,156,.5);}
.section--lake{background:var(--lake-800)}
.section--indigo{background:var(--jewel-indigo)}
.section__head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:16px 32px;justify-content:space-between;margin-bottom:clamp(28px,4vw,48px)}
.section__title{max-width:36ch}
.section__note{font-size:13px;color:var(--text-3);max-width:42ch;line-height:1.75}

.grid{display:grid;gap:clamp(16px,2.4vw,32px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.grid--auto{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.col-3{grid-column:span 3}
.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-9{grid-column:span 9}
.col-12{grid-column:span 12}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  font-size:var(--fs-14);font-weight:600;letter-spacing:.04em;line-height:1.2;
  border:1px solid var(--lake-400);border-radius:var(--radius);
  background:transparent;color:var(--text-1);
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn:hover{transform:translateY(-2px);border-color:var(--spark-400);color:var(--spark-400)}
.btn--primary{background:var(--spark-400);border-color:var(--spark-400);color:var(--abyss-950)}
.btn--primary:hover{background:#5FEFE2;border-color:#5FEFE2;color:var(--abyss-950);box-shadow:var(--shadow-2)}
.btn--ghost{background:transparent;border-color:var(--hairline);color:var(--text-2)}
.btn--gold{background:var(--gold-400);border-color:var(--gold-400);color:var(--abyss-950)}
.btn--gold:hover{background:#F7D27A;border-color:#F7D27A;color:var(--abyss-950)}
.btn--sm{padding:8px 16px;font-size:13px}
.btn--block{width:100%}

.skip-link{
  position:fixed;top:8px;left:8px;z-index:220;
  padding:10px 18px;border-radius:var(--radius);
  background:var(--spark-400);color:var(--abyss-950);
  font-size:var(--fs-14);font-weight:700;
  transform:translateY(-200%);
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 6. 头部 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  height:var(--header-h);
  display:flex;align-items:center;
  border-bottom:1px solid transparent;
  transition:height 240ms var(--ease),border-color 240ms var(--ease);
}
.site-header::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(4,18,31,.92) 0,rgba(7,27,43,.92) 100%);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  opacity:0;
  transition:opacity 240ms var(--ease);
}
.site-header[data-scrolled],
.site-header[data-open]{--header-h:60px;border-bottom-color:var(--hairline)}
.site-header[data-scrolled]::before,
.site-header[data-open]::before{opacity:1}
.site-header[data-scrolled] .site-header__inner,
.site-header[data-open] .site-header__inner{height:60px}
.site-header__inner{
  width:100%;max-width:var(--shell-wide);margin-inline:auto;
  padding-inline:var(--gutter);
  height:var(--header-h);
  display:flex;align-items:center;gap:clamp(16px,2.6vw,40px);
  transition:height 240ms var(--ease);
}

.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;min-width:0}
.brand__mark{
  position:relative;width:22px;height:22px;flex:0 0 auto;
  border:1px solid var(--lake-400);
  transition:border-color var(--dur) var(--ease);
}
.brand__mark::after{
  content:"";position:absolute;right:3px;bottom:3px;width:6px;height:6px;background:var(--spark-400);
}
.brand:hover .brand__mark{border-color:var(--spark-400)}
.brand__text{display:flex;flex-direction:column;gap:1px;min-width:0}
.brand__name{font-size:15px;font-weight:800;letter-spacing:.06em;color:var(--text-1);white-space:nowrap}
.brand__sub{font-size:11px;letter-spacing:.2em;color:var(--text-3);white-space:nowrap}

.site-nav{flex:1 1 auto;display:flex;justify-content:center;align-items:center}
.site-nav__list{display:flex;align-items:center;gap:clamp(14px,2vw,32px)}
.site-nav__item{display:block}
.site-nav__link{
  position:relative;display:inline-flex;align-items:baseline;gap:6px;
  padding:8px 2px;font-size:15px;color:var(--text-2);
  transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.site-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--spark-400);transform:scaleX(0);transform-origin:left center;
  transition:transform var(--dur) var(--ease);
}
.site-nav__link:hover{color:#FFFFFF;transform:translateY(-2px)}
.site-nav__link:hover::after{transform:scaleX(1)}
.site-nav__idx{font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;color:var(--lake-400);transition:color var(--dur) var(--ease)}
.site-nav__label{white-space:nowrap}
.site-nav__link[aria-current="page"]{color:var(--spark-400)}
.site-nav__link[aria-current="page"] .site-nav__idx{color:var(--spark-400)}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1)}
.site-nav__aside{display:none}

.site-header__utility{display:flex;align-items:center;gap:14px;flex:0 0 auto;margin-left:auto}
.site-clock{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;color:var(--lake-400);
}
.site-clock::before{content:"";width:6px;height:6px;background:var(--spark-400);flex:0 0 auto}

.nav-toggle{
  display:none;position:relative;z-index:140;align-items:center;gap:10px;
  padding:9px 13px;border:1px solid var(--hairline);border-radius:var(--radius);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--text-1);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--spark-400);color:var(--spark-400)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:16px}
.nav-toggle__bars span{display:block;height:1px;background:currentColor;transition:transform var(--dur) var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child{transform:translateY(2.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child{transform:translateY(-2.5px) rotate(-45deg)}
.nav-toggle__text{white-space:nowrap}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--abyss-950);
  border-top:1px solid var(--hairline);
  color:var(--text-2);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--spark-400),transparent);
  opacity:.45;
}
.site-footer__inner{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.5fr);
  gap:clamp(32px,5vw,80px);
  padding-block:clamp(48px,7vw,88px);
}
.site-footer__name{font-size:var(--fs-21);font-weight:800;letter-spacing:.02em;color:var(--text-1)}
.site-footer__sig{margin-top:10px;font-size:12px;letter-spacing:.22em;color:var(--spark-400)}
.site-footer__note{margin-top:20px;font-size:13px;line-height:1.8;color:var(--text-3);max-width:34ch}
.site-footer__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,40px)}
.footer-col__title{
  font-family:var(--font-mono);font-size:11px;font-weight:500;letter-spacing:.24em;text-transform:uppercase;
  color:var(--text-3);padding-bottom:12px;border-bottom:1px solid var(--hairline);margin-bottom:16px;
}
.footer-col__list{display:grid;gap:11px}
.footer-col__link{
  display:inline-flex;align-items:center;gap:9px;
  font-size:14px;color:var(--text-2);
  transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.footer-col__link::before{content:"";width:8px;height:1px;background:var(--lake-400);transition:width var(--dur) var(--ease),background-color var(--dur) var(--ease)}
.footer-col__link:hover{color:var(--spark-400);transform:translateX(2px)}
.footer-col__link:hover::before{width:14px;background:var(--spark-400)}
.site-footer__base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 28px;
  padding-block:22px;border-top:1px solid rgba(46,127,168,.24);
  font-size:12.5px;color:var(--text-3);
}
.site-footer__legal{font-family:var(--font-mono);letter-spacing:.14em;white-space:nowrap}
.site-footer__contact{font-family:var(--font-mono);font-size:12px;letter-spacing:.04em}
.site-footer__copy{font-family:var(--font-mono);letter-spacing:.12em;white-space:nowrap}

/* ---------- 8. 固定反馈入口 ---------- */
.feedback-dock{
  position:fixed;right:clamp(12px,3vw,28px);bottom:clamp(12px,3vw,28px);z-index:110;
  display:inline-flex;align-items:center;gap:9px;
  padding:10px 16px;border-radius:var(--radius);
  background:rgba(4,18,31,.92);
  border:1px solid var(--hairline-strong);
  color:var(--spark-400);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
  box-shadow:var(--shadow-1);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),
             color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.feedback-dock::before{content:"";width:6px;height:6px;background:var(--spark-400);transition:background-color var(--dur) var(--ease)}
.feedback-dock:hover{transform:translateY(-2px);background:var(--spark-400);border-color:var(--spark-400);color:var(--abyss-950)}
.feedback-dock:hover::before{background:var(--abyss-950)}

/* ---------- 9. 通用组件 ---------- */
.breadcrumb{padding-block:14px;border-bottom:1px solid var(--hairline)}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--text-3)}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__link{color:var(--text-3);transition:color var(--dur) var(--ease)}
.breadcrumb__link:hover{color:var(--spark-400)}
.breadcrumb__sep{color:rgba(46,127,168,.7)}
.breadcrumb__current{color:var(--text-2)}

.page-head{padding-block:clamp(104px,14vw,168px) clamp(32px,5vw,56px)}
.page-head__eyebrow{margin-bottom:18px}
.page-head__title{font-size:clamp(34px,5.2vw,68px);letter-spacing:-.02em;max-width:24ch}
.page-head__lede{margin-top:20px;max-width:62ch;font-size:17px;line-height:1.8;color:var(--text-2)}

.prose{max-width:68ch;font-size:var(--fs-16);line-height:1.85;color:var(--text-2)}
.prose > * + *{margin-top:1.1em}
.prose h2{font-size:var(--fs-28);margin-top:2em}
.prose h3{font-size:var(--fs-21);margin-top:1.6em}
.prose ul{display:grid;gap:.6em}
.prose li{position:relative;padding-left:22px}
.prose li::before{content:"";position:absolute;left:0;top:.78em;width:9px;height:1px;background:var(--spark-400)}
.prose a{color:var(--spark-400);border-bottom:1px solid var(--hairline-strong)}
.prose a:hover{color:#5FEFE2}

.card{
  display:flex;flex-direction:column;gap:14px;
  padding:clamp(20px,2.4vw,28px);
  background:var(--bg-panel);
  border:1px solid var(--hairline);border-radius:var(--radius);
  box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--spark-400);box-shadow:var(--shadow-2)}
.card__head{display:flex;flex-wrap:wrap;align-items:center;gap:10px;justify-content:space-between}
.card__title{font-size:var(--fs-21);font-weight:700;color:var(--text-1)}
.card__body{font-size:14.5px;line-height:1.8;color:var(--text-2)}
.card__foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--hairline);display:flex;flex-wrap:wrap;gap:12px;align-items:center}

.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--radius);
  border:1px solid var(--hairline-strong);
  background:rgba(52,228,214,.06);
  color:var(--spark-400);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;white-space:nowrap;
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
a.tag:hover{transform:translateY(-2px);background:rgba(52,228,214,.14)}
.tag--gold{border-color:rgba(242,193,78,.5);background:rgba(242,193,78,.07);color:var(--gold-400)}
a.tag--gold:hover{background:rgba(242,193,78,.16)}
.tag--muted{border-color:var(--hairline-soft);background:transparent;color:var(--text-3)}

.timeline{position:relative;padding-left:28px}
.timeline::before{
  content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,var(--spark-400) 0,rgba(52,228,214,.08) 100%);
}
.timeline__item{position:relative;padding-block:0}
.timeline__item + .timeline__item{margin-top:clamp(28px,4vw,44px)}
.timeline__item::before{
  content:"";position:absolute;left:-28px;top:9px;width:11px;height:11px;
  background:var(--abyss-950);border:1px solid var(--spark-400);
}
.timeline__meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--text-3);
}
.timeline__title{margin-block:7px 9px;font-size:var(--fs-21);font-weight:700;color:var(--text-1)}
.timeline__body{font-size:14.5px;line-height:1.8;color:var(--text-2);max-width:64ch}
.timeline__tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}

.plan-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;
  background:var(--hairline);border:1px solid var(--hairline);border-radius:var(--radius);overflow:hidden;
}
.plan{display:flex;flex-direction:column;gap:14px;padding:clamp(20px,2.4vw,26px);background:var(--bg-panel)}
.plan--feature{
  background:linear-gradient(180deg,var(--jewel-indigo) 0,var(--abyss-900) 100%);
  border-top:2px solid var(--gold-400);
}
.plan__name{font-size:var(--fs-16);font-weight:700;color:var(--text-1)}
.plan__badge{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;
  color:var(--gold-400);border:1px solid rgba(242,193,78,.5);border-radius:var(--radius);padding:3px 8px;
}
.plan__list{display:grid;gap:10px;font-size:14px}
.plan__item{display:flex;align-items:flex-start;gap:10px;color:var(--text-2);line-height:1.7}
.plan__item::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;background:var(--spark-400)}
.plan__item--gold::before{background:var(--gold-400)}
.plan__item--off{color:var(--text-3)}
.plan__item--off::before{background:transparent;border:1px solid var(--lake-400)}

.stat{display:block}
.stat__value{
  display:block;font-family:var(--font-mono);font-size:var(--fs-38);font-weight:600;
  line-height:1;letter-spacing:.02em;color:var(--gold-400);
}
.stat__label{display:block;margin-top:8px;font-size:13px;letter-spacing:.06em;color:var(--text-3)}

.table-wrap{width:100%;overflow-x:auto;border:1px solid var(--hairline);border-radius:var(--radius)}
.table{width:100%;min-width:520px;font-size:14px}
.table th,.table td{padding:12px 16px;text-align:left;border-bottom:1px solid rgba(46,127,168,.2);vertical-align:top}
.table th{
  font-family:var(--font-mono);font-size:11px;font-weight:500;letter-spacing:.16em;
  text-transform:uppercase;color:var(--text-3);white-space:nowrap;
}
.table td:first-child{color:var(--text-1)}
.table tr:last-child th,.table tr:last-child td{border-bottom:0}

.media{
  position:relative;overflow:hidden;border-radius:var(--radius);
  border:1px solid var(--hairline);
  background:linear-gradient(140deg,var(--lake-800) 0,var(--abyss-950) 68%);
}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--3x2{aspect-ratio:3/2}
.media--1x1{aspect-ratio:1/1}
.media--wide{aspect-ratio:21/9}
.media img,.media picture{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.media__grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(to right,rgba(52,228,214,.12) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(52,228,214,.12) 1px,transparent 1px);
  background-size:40px 40px;
  background-position:center;
}
.media__label{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.26em;text-transform:uppercase;
  color:rgba(183,204,220,.72);text-align:center;padding:16px;
}
.media__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 16px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--mist-050);background:linear-gradient(180deg,rgba(4,18,31,0) 0,rgba(4,18,31,.88) 100%);
}

.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.filter-chip{
  padding:7px 14px;border:1px solid var(--hairline-soft);border-radius:var(--radius);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--text-2);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),
             color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.filter-chip:hover{transform:translateY(-2px);border-color:var(--spark-400);color:var(--text-1)}
.filter-chip[aria-pressed="true"]{background:rgba(52,228,214,.12);border-color:var(--spark-400);color:var(--spark-400)}
.filter-count{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--text-3)}

.reveal{opacity:1;transform:none}
html[data-js="on"] .reveal:not([data-visible]){opacity:0;transform:translateY(10px)}
html[data-js="on"] .reveal{
  transition:opacity 320ms var(--ease),transform 320ms var(--ease);
}
html[data-js="on"] .reveal[data-visible]{opacity:1;transform:none}

.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:200;
  pointer-events:none;background:transparent;
}
.scroll-progress__bar{
  display:block;width:100%;height:100%;transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--spark-600) 0,var(--spark-400) 62%,var(--gold-400) 100%);
  transition:transform 120ms linear;
}

html[data-nav-open] body{overflow:hidden}

/* ---------- 10. 响应式 ---------- */
@media (max-width:1279px){
  .site-clock{display:none}
}
@media (max-width:1023px){
  .site-nav{
    position:fixed;inset:0;z-index:130;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    padding:calc(var(--header-h) + 24px) var(--gutter) 40px;
    background:linear-gradient(180deg,rgba(4,18,31,.99) 0,rgba(12,46,74,.99) 100%);
    background-image:
      linear-gradient(180deg,rgba(4,18,31,.99) 0,rgba(12,46,74,.99) 100%),
      linear-gradient(to right,rgba(52,228,214,.08) 1px,transparent 1px),
      linear-gradient(to bottom,rgba(52,228,214,.08) 1px,transparent 1px);
    background-size:auto,72px 72px,72px 72px;
    overflow-y:auto;
    visibility:hidden;opacity:0;transform:translateY(-16px);
    transition:opacity 240ms var(--ease),transform 240ms var(--ease),visibility 240ms var(--ease);
  }
  .site-nav[data-open]{visibility:visible;opacity:1;transform:none}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .site-nav__item{border-bottom:1px solid var(--hairline)}
  .site-nav__link{
    display:flex;align-items:center;gap:16px;width:100%;
    padding:18px 4px;font-size:var(--fs-21);transform:none;
  }
  .site-nav__link:hover{transform:none}
  .site-nav__link::after{display:none}
  .site-nav__idx{font-size:11px;width:28px;flex:0 0 auto}
  .site-nav__aside{display:block;margin-top:28px}
  .site-header__cta{display:none}
  .nav-toggle{display:inline-flex}
  .site-footer__inner{grid-template-columns:1fr}
  .site-footer__base{justify-content:flex-start}
}
@media (max-width:767px){
  :root{--header-h:64px}
  .brand__sub{display:none}
  .grid--2,.grid--3,.grid--12{grid-template-columns:minmax(0,1fr)}
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9,.col-12{grid-column:span 1}
  .plan-grid{grid-template-columns:minmax(0,1fr)}
  .site-footer__grid{grid-template-columns:1fr;gap:26px}
  .site-footer__contact{font-size:11.5px}
  .page-head__title{font-size:clamp(30px,8vw,40px)}
  .timeline{padding-left:22px}
  .timeline__item::before{left:-22px;width:9px;height:9px}
  .feedback-dock{bottom:14px;right:14px;padding:9px 14px;letter-spacing:.12em}
}

/* ---------- 11. 减少动效 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    transition-duration:1ms !important;
    animation-duration:1ms !important;
    animation-iteration-count:1 !important;
  }
  html{scroll-behavior:auto}
  html[data-js="on"] .reveal:not([data-visible]){opacity:1;transform:none}
  .btn:hover,.card:hover,.tag:hover,.filter-chip:hover,
  .footer-col__link:hover,.feedback-dock:hover,.site-nav__link:hover{transform:none}
  .scroll-progress__bar{transition:none}
}