/* ============================================================
   聚合入口稳定版 · 全站共享样式  /assets/site.css
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root{
  --ink:#081A26;
  --deep:#10303F;
  --lake:#2FB6C4;
  --amber:#F2A93B;
  --green:#3ED598;
  --orange:#E9925A;
  --frost:#E8F1F4;
  --mist:#8FA6B2;
  --glass:rgba(255,255,255,.08);
  --line:#2A4553;

  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:24px;
  --radius-pill:999px;

  --font-display:"Inter Tight","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Source Han Serif SC","Noto Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-mono:"JetBrains Mono","Sarasa Mono SC",ui-monospace,SFMono-Regular,Consolas,"Courier New",monospace;

  --wrap:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after{box-sizing:border-box;}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:120px;
}

body{
  margin:0;
  background:var(--ink);
  color:var(--frost);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

/* 夜间控制台底纹：细网格 + 两处冷调辉光 */
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(47,182,196,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(47,182,196,.045) 1px,transparent 1px);
  background-size:64px 64px,64px 64px;
  opacity:.75;
}

body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(680px 420px at 84% -8%,rgba(47,182,196,.16),transparent 70%),
    radial-gradient(560px 380px at 2% 98%,rgba(242,169,59,.075),transparent 72%);
}

img,
svg,
video{max-width:100%;height:auto;display:block;}

button,
input,
select,
textarea{font:inherit;color:inherit;}

h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.28;
  letter-spacing:-.01em;
  color:var(--frost);
  text-wrap:balance;
}

p{margin:0;text-wrap:pretty;}

a{color:var(--lake);}

ul,ol{margin:0;padding:0;}

:focus-visible{
  outline:2px solid var(--lake);
  outline-offset:3px;
  border-radius:6px;
}

::selection{background:rgba(47,182,196,.34);color:#fff;}

/* ---------- 3. 跳过链接 ---------- */
.skip-link{
  position:fixed;
  top:-120px;
  left:16px;
  z-index:200;
  display:inline-block;
  padding:12px 22px;
  border-radius:var(--radius-pill);
  background:var(--amber);
  color:#0B1D27;
  font-family:var(--font-display);
  font-weight:800;
  font-size:14px;
  text-decoration:none;
  transition:top .22s var(--ease);
}
.skip-link:focus{top:16px;}

/* ---------- 4. 布局容器 ---------- */
.wrap{
  width:min(var(--wrap),100% - clamp(32px,7vw,64px));
  margin-inline:auto;
}

.site-main{
  position:relative;
  z-index:1;
  display:block;
  padding:clamp(40px,5vw,72px) 0 clamp(72px,9vw,120px);
}

/* ---------- 5. 悬浮胶囊导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  padding:14px 0 8px;
}

.nav-shell{
  position:relative;
  width:min(1200px,100% - clamp(24px,5vw,48px));
  margin-inline:auto;
  display:flex;
  align-items:center;
  gap:clamp(12px,1.6vw,22px);
  padding:10px 12px 10px 18px;
  border-radius:var(--radius-pill);
  background:rgba(16,48,63,.72);
  border:1px solid rgba(47,182,196,.22);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:
    0 18px 44px rgba(0,0,0,.44),
    inset 0 1px 0 rgba(255,255,255,.08);
  transition:padding .32s var(--ease),background .32s var(--ease),box-shadow .32s var(--ease);
}

.site-header[data-stuck] .nav-shell{
  padding:7px 10px 7px 16px;
  background:rgba(8,26,38,.88);
  box-shadow:
    0 14px 34px rgba(0,0,0,.6),
    inset 0 1px 0 rgba(255,255,255,.1);
}

/* 品牌浮岛 */
.brand{
  display:flex;
  align-items:center;
  gap:11px;
  flex:0 0 auto;
  text-decoration:none;
  color:inherit;
}

.brand__mark{
  position:relative;
  width:34px;
  height:34px;
  flex:0 0 auto;
  border-radius:50%;
  border:1px solid rgba(47,182,196,.5);
  background:radial-gradient(circle at 50% 50%,rgba(47,182,196,.3),rgba(47,182,196,0) 72%);
  display:grid;
  place-items:center;
}

.brand__mark::before{
  content:"";
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--lake);
  box-shadow:0 0 12px rgba(47,182,196,.9);
}

.brand__mark::after{
  content:"";
  position:absolute;
  inset:5px;
  border-radius:50%;
  border:1px solid rgba(47,182,196,.34);
  animation:ripple 8s ease-in-out infinite;
}

@keyframes ripple{
  0%,100%{opacity:.08;transform:scale(1);}
  50%{opacity:.16;transform:scale(1.08);}
}

.brand__text{display:flex;flex-direction:column;line-height:1.15;}

.brand__name{
  font-family:var(--font-display);
  font-weight:800;
  font-size:15px;
  letter-spacing:.02em;
  color:var(--frost);
  white-space:nowrap;
}

.brand__tag{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--mist);
  white-space:nowrap;
}

/* 状态读盘 */
.status-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  flex:0 0 auto;
  padding:6px 13px;
  border-radius:var(--radius-pill);
  background:rgba(62,213,152,.1);
  border:1px solid rgba(62,213,152,.3);
  color:var(--green);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.05em;
  white-space:nowrap;
}

.status-pill__dot{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--green);
  box-shadow:0 0 10px var(--green);
  animation:dotPulse 3s ease-in-out infinite;
}

@keyframes dotPulse{
  0%,100%{opacity:1;}
  50%{opacity:.45;}
}

/* 移动端汉堡 */
.nav-toggle{
  display:none;
  margin-left:auto;
  width:44px;
  height:44px;
  padding:0;
  flex:0 0 auto;
  place-items:center;
  border-radius:var(--radius-pill);
  border:1px solid rgba(47,182,196,.35);
  background:rgba(47,182,196,.1);
  color:var(--frost);
  cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}

.nav-toggle:hover{border-color:var(--lake);background:rgba(47,182,196,.18);}

.nav-toggle__bars{
  position:relative;
  display:block;
  width:18px;
  height:12px;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:1.6px;
  border-radius:2px;
  background:currentColor;
  transition:transform .26s var(--ease),top .26s var(--ease);
}

.nav-toggle__bars::before{top:0;}
.nav-toggle__bars::after{top:10px;}

.site-header[data-open] .nav-toggle__bars::before{top:5px;transform:rotate(45deg);}
.site-header[data-open] .nav-toggle__bars::after{top:5px;transform:rotate(-45deg);}

/* 导航旋钮 */
.site-nav{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
}

.site-nav__list{
  display:flex;
  align-items:center;
  gap:2px;
  list-style:none;
}

.site-nav__link{
  display:inline-block;
  padding:8px 13px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  color:var(--mist);
  font-size:14px;
  font-weight:500;
  text-decoration:none;
  white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}

.site-nav__link:hover{color:var(--frost);background:rgba(255,255,255,.06);}

.site-nav__link[aria-current="page"]{
  color:var(--frost);
  background:rgba(47,182,196,.14);
  border-color:rgba(47,182,196,.55);
}

.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex:0 0 auto;
  padding:9px 18px;
  border-radius:var(--radius-pill);
  border:1px solid var(--amber);
  background:var(--amber);
  color:#12222C;
  font-family:var(--font-display);
  font-weight:800;
  font-size:14px;
  letter-spacing:.01em;
  text-decoration:none;
  white-space:nowrap;
  box-shadow:0 8px 20px rgba(242,169,59,.22);
  transition:transform .18s var(--ease),box-shadow .22s var(--ease);
}

.nav-cta:hover{box-shadow:0 10px 26px rgba(242,169,59,.4);}
.nav-cta:active{transform:translateY(1px);}

/* ---------- 6. 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-family:var(--font-display);
  font-weight:800;
  font-size:15px;
  letter-spacing:.01em;
  text-decoration:none;
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}

.btn:active{transform:translateY(1px);}

.btn--primary{
  background:var(--amber);
  border-color:var(--amber);
  color:#12222C;
  box-shadow:0 10px 26px rgba(242,169,59,.26);
}
.btn--primary:hover{box-shadow:0 12px 32px rgba(242,169,59,.42);}

.btn--ghost{
  background:rgba(255,255,255,.05);
  border-color:rgba(47,182,196,.35);
  color:var(--frost);
}
.btn--ghost:hover{border-color:var(--lake);background:rgba(47,182,196,.12);}

/* ---------- 7. 章节与排版 ---------- */
.kicker{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--lake);
}

.section{
  padding-block:clamp(56px,7vw,104px);
}

.section__head{
  display:flex;
  align-items:baseline;
  flex-wrap:wrap;
  gap:14px 18px;
  margin-bottom:clamp(22px,3vw,34px);
  padding-left:14px;
  border-left:2px solid var(--line);
}

.section__num{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(28px,3.6vw,46px);
  line-height:1;
  letter-spacing:-.03em;
  color:var(--amber);
}

.section__title{
  font-size:clamp(22px,2.8vw,34px);
  margin:0;
}

.section__sub{
  flex:1 1 100%;
  font-family:var(--font-serif);
  font-size:15px;
  color:var(--mist);
  margin:0;
  max-width:60ch;
}

.section__body{display:block;}

.prose{max-width:68ch;}

.prose h2{
  font-size:clamp(21px,2.4vw,29px);
  margin:46px 0 14px;
}

.prose h3{
  font-size:clamp(18px,1.9vw,22px);
  margin:32px 0 10px;
}

.prose p{margin:0 0 18px;color:#CFDEE5;}
.prose ul,.prose ol{margin:0 0 18px;padding-left:22px;}
.prose li{margin-bottom:8px;color:#CFDEE5;}
.prose a{color:var(--lake);text-decoration-thickness:1px;text-underline-offset:3px;}

.prose code{
  font-family:var(--font-mono);
  font-size:.88em;
  padding:2px 6px;
  border-radius:6px;
  background:rgba(47,182,196,.13);
  color:var(--lake);
}

.prose blockquote{
  margin:26px 0;
  padding:4px 0 4px 18px;
  border-left:2px solid var(--lake);
  font-family:var(--font-serif);
  color:var(--mist);
}

.prose hr{
  border:0;
  border-top:1px solid var(--line);
  margin:36px 0;
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:9px;
  list-style:none;
  margin:0 0 26px;
  padding:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--mist);
}

.breadcrumb li{display:flex;align-items:center;gap:9px;}

.breadcrumb li + li::before{
  content:"/";
  color:var(--line);
}

.breadcrumb a{color:var(--mist);text-decoration:none;}
.breadcrumb a:hover{color:var(--lake);}
.breadcrumb [aria-current="page"]{color:var(--frost);}

/* ---------- 9. Bento 栅格 ---------- */
.bento{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,1.8vw,20px);
}

.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-12{grid-column:span 12;}

/* ---------- 10. 内容块 ---------- */
.glass-card{
  position:relative;
  padding:clamp(20px,2.2vw,26px);
  border-radius:var(--radius-lg);
  background:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.1);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.09),
    0 20px 40px rgba(0,0,0,.28);
  overflow:hidden;
}

.panel{
  padding:clamp(20px,2.2vw,26px);
  border-radius:var(--radius-lg);
  background:var(--deep);
  border:1px solid var(--line);
}

.anchor-block{
  display:flex;
  flex-direction:column;
  gap:8px;
}

.anchor-block__num{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(44px,6vw,72px);
  line-height:.95;
  letter-spacing:-.04em;
  color:var(--amber);
}

.anchor-block__text{
  margin:0;
  max-width:34ch;
  color:var(--mist);
  font-size:15px;
}

.plate{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:clamp(18px,2vw,22px);
  border-radius:var(--radius-md);
  background:rgba(16,48,63,.72);
  border:1px solid var(--line);
}

.plate__label{
  font-family:var(--font-serif);
  font-size:14px;
  letter-spacing:.02em;
  color:var(--lake);
  margin:0;
}

.plate__title{
  font-family:var(--font-display);
  font-weight:800;
  font-size:19px;
  margin:0;
  color:var(--frost);
}

.plate__text{
  margin:0;
  font-size:15px;
  color:var(--mist);
}

/* ---------- 11. 状态标签 ---------- */
.status-tag{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:4px 11px;
  border-radius:var(--radius-pill);
  border:1px solid;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  text-transform:uppercase;
  cursor:default;
  white-space:nowrap;
}

.status-tag::before{
  content:"";
  width:6px;
  height:6px;
  flex:0 0 auto;
  border-radius:50%;
  background:currentColor;
  box-shadow:0 0 8px currentColor;
}

.status-tag--stable{color:var(--green);border-color:rgba(62,213,152,.4);background:rgba(62,213,152,.1);}
.status-tag--watch{color:var(--orange);border-color:rgba(233,146,90,.4);background:rgba(233,146,90,.1);}
.status-tag--maintenance{color:var(--amber);border-color:rgba(242,169,59,.4);background:rgba(242,169,59,.1);}
.status-tag--update{color:var(--lake);border-color:rgba(47,182,196,.4);background:rgba(47,182,196,.1);}

.status-tag[data-tip]::after{
  content:attr(data-tip);
  position:absolute;
  left:0;
  top:calc(100% + 9px);
  z-index:8;
  width:max-content;
  max-width:260px;
  padding:9px 13px;
  border-radius:var(--radius-sm);
  background:rgba(8,26,38,.97);
  border:1px solid var(--line);
  color:var(--frost);
  font-size:12px;
  font-weight:400;
  letter-spacing:.01em;
  line-height:1.6;
  text-transform:none;
  white-space:normal;
  opacity:0;
  visibility:hidden;
  transform:translateY(-5px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
}

.status-tag[data-tip]:hover::after,
.status-tag[data-tip]:focus-visible::after{
  opacity:1;
  visibility:visible;
  transform:none;
}

/* ---------- 12. 对照块 ---------- */
.compare{
  display:grid;
  grid-template-columns:1fr 1fr;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  overflow:hidden;
}

.compare__col{padding:18px 20px;}

.compare__col + .compare__col{border-left:1px solid var(--line);}
.compare__col--old{background:rgba(143,166,178,.06);}
.compare__col--new{background:rgba(47,182,196,.1);}

.compare__head{
  margin:0 0 10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mist);
}

.compare__list{
  margin:0;
  padding-left:18px;
  font-size:15px;
  color:var(--frost);
}

.compare__list li + li{margin-top:7px;}

/* ---------- 13. 轨道时间线 ---------- */
.track{
  display:flex;
  gap:34px;
  padding:10px 4px 16px;
  overflow-x:auto;
  scrollbar-width:thin;
}

.track__node{
  position:relative;
  flex:0 0 auto;
  min-width:152px;
  padding-top:24px;
  font-size:14px;
  color:var(--frost);
}

.track__node::before{
  content:"";
  position:absolute;
  top:6px;
  left:0;
  width:12px;
  height:12px;
  border-radius:50%;
  background:var(--lake);
  box-shadow:0 0 0 4px rgba(47,182,196,.16);
}

.track__node::after{
  content:"";
  position:absolute;
  top:11px;
  left:14px;
  right:-34px;
  height:1px;
  background:var(--line);
}

.track__node:last-child::after{display:none;}

.track__node--stable::before{background:var(--green);box-shadow:0 0 0 4px rgba(62,213,152,.16);}
.track__node--watch::before{background:var(--orange);box-shadow:0 0 0 4px rgba(233,146,90,.16);}
.track__node--maintenance::before{background:var(--amber);box-shadow:0 0 0 4px rgba(242,169,59,.16);}

.track__date{
  display:block;
  margin-bottom:5px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--mist);
}

/* ---------- 14. 筛选条 ---------- */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px;
  width:fit-content;
  max-width:100%;
  margin:0 0 clamp(24px,3vw,34px);
  padding:7px;
  border-radius:var(--radius-pill);
  background:var(--glass);
  border:1px solid var(--line);
}

.filter-btn{
  padding:8px 16px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  background:transparent;
  color:var(--mist);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  cursor:pointer;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}

.filter-btn:hover{color:var(--frost);background:rgba(255,255,255,.06);}

.filter-btn[aria-pressed="true"]{
  color:#0B1D27;
  background:var(--lake);
  border-color:var(--lake);
}

.filter-count{
  padding:0 14px 0 10px;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--mist);
}

/* ---------- 15. 图片容器 ---------- */
.figure{margin:0;display:block;}

.figure__media{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-md);
  border:1px solid var(--line);
  background:linear-gradient(145deg,#0C2432 0%,#10303F 55%,#0A202C 100%);
  aspect-ratio:16 / 9;
}

.figure__media img,
.figure__media svg{
  width:100%;
  height:100%;
  object-fit:cover;
}

.figure__media--wide{aspect-ratio:21 / 9;}
.figure__media--tall{aspect-ratio:4 / 5;}
.figure__media--square{aspect-ratio:1 / 1;}

.figure__caption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.03em;
  color:var(--mist);
}

/* ---------- 16. 页脚 ---------- */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:clamp(64px,8vw,120px);
  border-top:1px solid var(--line);
  background:
    radial-gradient(720px 360px at 88% 0%,rgba(47,182,196,.12),transparent 70%),
    linear-gradient(180deg,#0B2331,#081A26);
}

.footer__inner{
  width:min(var(--wrap),100% - clamp(32px,7vw,64px));
  margin-inline:auto;
  padding:clamp(48px,6vw,76px) 0 32px;
}

.footer__top{
  display:grid;
  grid-template-columns:1.25fr repeat(4,1fr);
  gap:clamp(24px,3vw,38px);
  padding-bottom:clamp(32px,4vw,48px);
  border-bottom:1px solid var(--line);
}

.footer__brand{display:flex;flex-direction:column;gap:10px;}

.footer__mark{
  width:32px;
  height:32px;
  border-radius:50%;
  border:1px solid rgba(47,182,196,.5);
  background:radial-gradient(circle at 50% 50%,rgba(47,182,196,.3),rgba(47,182,196,0) 72%);
  box-shadow:inset 0 0 0 9px rgba(47,182,196,.06);
}

.footer__name{
  margin:0;
  font-family:var(--font-display);
  font-weight:800;
  font-size:17px;
  letter-spacing:.02em;
  color:var(--frost);
}

.footer__tag{
  margin:0;
  font-family:var(--font-serif);
  font-size:14px;
  color:var(--lake);
}

.footer__sign{
  margin:0;
  max-width:30ch;
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1.8;
  letter-spacing:.02em;
  color:var(--mist);
}

.footer__col{display:flex;flex-direction:column;gap:12px;}

.footer__title{
  margin:0;
  font-family:var(--font-display);
  font-weight:800;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--frost);
}

.footer__list{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:9px;
  font-size:14px;
}

.footer__list a{
  color:var(--mist);
  text-decoration:none;
  transition:color .2s var(--ease);
}

.footer__list a:hover{color:var(--lake);}

.footer__contact li{
  color:var(--mist);
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.7;
}

.footer__contact li:first-child{font-family:var(--font-body);font-size:14px;}

.footer__bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding-top:24px;
}

.footer__legal{display:flex;flex-wrap:wrap;gap:18px;}

.footer__legal-link{
  color:var(--mist);
  font-size:13px;
  text-decoration:none;
  transition:color .2s var(--ease);
}

.footer__legal-link:hover{color:var(--lake);}

.footer__record{
  margin:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--mist);
}

/* ---------- 17. 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:clamp(16px,3vw,32px);
  bottom:clamp(16px,3vw,32px);
  z-index:80;
  display:grid;
  place-items:center;
  width:46px;
  height:46px;
  padding:0;
  border-radius:50%;
  border:1px solid rgba(47,182,196,.4);
  background:rgba(16,48,63,.86);
  color:var(--lake);
  font-size:17px;
  line-height:1;
  cursor:pointer;
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s,color .2s var(--ease),border-color .2s var(--ease);
}

.to-top[data-visible]{
  opacity:1;
  visibility:visible;
  transform:none;
}

.to-top:hover{border-color:var(--lake);color:var(--frost);}

/* ---------- 18. 显现动效 ---------- */
.js [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}

.js [data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* ---------- 19. 断点 ---------- */
@media (max-width:1180px){
  .status-pill{display:none;}
}

@media (max-width:1024px){
  .nav-toggle{display:grid;}

  .site-nav{
    position:absolute;
    top:calc(100% + 12px);
    left:0;
    right:0;
    margin-left:0;
    flex-direction:column;
    align-items:stretch;
    gap:12px;
    padding:16px;
    border-radius:22px;
    background:rgba(8,26,38,.97);
    border:1px solid rgba(47,182,196,.24);
    box-shadow:0 24px 48px rgba(0,0,0,.55);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
  }

  .site-header[data-open] .site-nav{
    opacity:1;
    visibility:visible;
    transform:none;
  }

  .site-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:2px;
  }

  .site-nav__link{
    display:block;
    padding:13px 16px;
    border-radius:14px;
    font-size:15px;
  }

  .nav-cta{width:100%;padding:13px 18px;}

  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8{grid-column:span 6;}

  .footer__top{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer__brand{grid-column:1 / -1;}
}

@media (max-width:768px){
  body::before{background-size:48px 48px,48px 48px;}
  .brand__tag{display:none;}
  .compare{grid-template-columns:1fr;}
  .compare__col + .compare__col{border-left:0;border-top:1px solid var(--line);}
}

@media (max-width:640px){
  .wrap,
  .footer__inner,
  .nav-shell{width:calc(100% - 28px);}

  .bento{gap:14px;}
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-12{grid-column:span 12;}

  .section__head{padding-left:10px;}
  .filter-bar{width:100%;border-radius:var(--radius-lg);}
  .to-top{width:42px;height:42px;}

  .footer__top{grid-template-columns:1fr;}
  .footer__bottom{flex-direction:column;align-items:flex-start;}
}

/* ---------- 20. 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;
  }

  .js [data-reveal]{
    opacity:1 !important;
    transform:none !important;
  }
}