/* ===== 1. Reset ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd,address{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
img,svg,video{display:block;max-width:100%}
address{font-style:normal}
:focus-visible{outline:3px solid var(--ps-orange-500);outline-offset:3px;border-radius:4px}

/* ===== 2. Tokens ===== */
:root{
  --ps-green-600:#05A65C;
  --ps-green-800:#05663A;
  --ps-orange-500:#FF6A1A;
  --ps-orange-100:#FFE7D6;
  --ps-blue-900:#0B1424;
  --ps-blue-700:#14213A;
  --ps-silver-300:#C7CED8;
  --ps-yellow-400:#FFD233;
  --ps-ink-900:#10151C;
  --ps-paper-50:#F6F8FA;
  --ps-line-200:#E3E8EF;
  --ps-ink-soft:#46525F;
  --ps-white:#FFFFFF;
  --ps-grid:rgba(227,232,239,.62);
  --ps-shadow-1:0 1px 0 rgba(11,20,36,.03),0 12px 34px -26px rgba(11,20,36,.5);
  --ps-shadow-2:0 2px 0 rgba(11,20,36,.04),0 28px 60px -34px rgba(11,20,36,.6);
  --ps-r-sm:8px;
  --ps-r-md:14px;
  --ps-r-lg:22px;
  --ps-r-pill:999px;
  --ps-shell:1180px;
  --ps-gutter:20px;
  --ps-font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --ps-mono:ui-monospace,"SFMono-Regular","JetBrains Mono",Menlo,Consolas,"Courier New",monospace;
  --ps-fast:140ms;
  --ps-base:220ms;
  --ps-ease:cubic-bezier(.22,.62,.24,1);
}

/* ===== 3. 中文排版与页面底色 ===== */
body{
  font-family:var(--ps-font);
  font-size:17px;
  line-height:1.75;
  color:var(--ps-ink-900);
  background-color:var(--ps-paper-50);
  background-image:
    linear-gradient(var(--ps-grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--ps-grid) 1px,transparent 1px);
  background-size:64px 64px;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-weight:900;line-height:1.2;letter-spacing:-.02em}
p{max-width:68ch}
.ps-shell{width:100%;max-width:var(--ps-shell);margin:0 auto;padding:0 var(--ps-gutter)}
.ps-section{padding:clamp(48px,7vw,88px) 0}
.ps-section--tight{padding:clamp(28px,4vw,48px) 0}
.ps-display{font-size:clamp(2.3rem,6.4vw,4.5rem);font-weight:900;line-height:1.06;letter-spacing:-.035em}
.ps-h2{font-size:clamp(1.6rem,3.4vw,2.5rem)}
.ps-h3{font-size:20px;letter-spacing:-.01em}
.ps-slant{display:inline-block;transform:skewX(-7deg)}
.ps-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--ps-green-800)}
.ps-eyebrow::before{content:"";width:18px;height:3px;background:var(--ps-orange-500);border-radius:2px}
.ps-lead{font-size:18px;color:var(--ps-ink-soft);line-height:1.8}
.ps-mono{font-family:var(--ps-mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.ps-divider{height:8px;margin:0;border:0;background:linear-gradient(90deg,var(--ps-green-600),var(--ps-orange-500) 58%,var(--ps-yellow-400));clip-path:polygon(0 100%,100% 0,100% 100%)}

/* ===== 4. 头部浮岛 ===== */
.ps-header{
  position:sticky;
  top:12px;
  z-index:80;
  padding:12px var(--ps-gutter) 0;
}
.ps-skip{
  position:absolute;left:50%;top:10px;transform:translate(-50%,-180%);
  z-index:120;padding:10px 20px;border-radius:var(--ps-r-pill);
  background:var(--ps-blue-900);color:var(--ps-white);
  font-size:14px;font-weight:700;
  transition:transform var(--ps-fast) var(--ps-ease);
}
.ps-skip:focus-visible{transform:translate(-50%,0)}
.ps-progress{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--ps-green-600),var(--ps-orange-500) 60%,var(--ps-yellow-400));
  z-index:90;
  transition:width 120ms linear;
}
.ps-header-inner{
  position:relative;
  max-width:var(--ps-shell);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:16px;
  padding:8px 10px 8px 16px;
  border:1px solid var(--ps-line-200);
  border-radius:var(--ps-r-pill);
  background:rgba(255,255,255,.9);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  backdrop-filter:saturate(160%) blur(14px);
  box-shadow:var(--ps-shadow-1);
  transition:padding var(--ps-base) var(--ps-ease),box-shadow var(--ps-base) var(--ps-ease),transform var(--ps-base) var(--ps-ease);
}
.ps-header.is-compact .ps-header-inner{
  padding:4px 8px 4px 14px;
  box-shadow:var(--ps-shadow-2);
  transform:translateY(-2px);
}
.ps-header.is-compact .ps-brand-sub{opacity:0;max-width:0}
.ps-header.is-compact .ps-brand-name{font-size:16px}

/* 品牌 */
.ps-brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;padding:6px 8px 6px 4px;border-radius:var(--ps-r-pill)}
.ps-brand-mark{
  position:relative;flex:0 0 auto;
  width:30px;height:30px;border-radius:9px;
  background:linear-gradient(140deg,var(--ps-green-600),var(--ps-green-800));
  display:grid;place-items:center;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.22);
}
.ps-brand-bar{display:block;width:13px;height:3px;border-radius:2px;background:var(--ps-white);transform:skewX(-20deg) translateY(-3px)}
.ps-brand-dot{position:absolute;right:6px;bottom:6px;width:6px;height:6px;border-radius:50%;background:var(--ps-yellow-400)}
.ps-brand-text{display:flex;flex-direction:column;line-height:1.1}
.ps-brand-name{font-size:17px;font-weight:900;letter-spacing:-.02em;color:var(--ps-ink-900);transition:font-size var(--ps-base) var(--ps-ease)}
.ps-brand-sub{font-size:11px;font-weight:700;letter-spacing:.18em;color:var(--ps-orange-500);text-transform:uppercase;transition:opacity var(--ps-base) var(--ps-ease),max-width var(--ps-base) var(--ps-ease);overflow:hidden;max-width:60px;white-space:nowrap}
.ps-brand--footer .ps-brand-name{color:var(--ps-white)}
.ps-brand--footer .ps-brand-sub{color:var(--ps-yellow-400)}

/* 导航 */
.ps-nav{display:flex;flex:1 1 auto;align-items:center;justify-content:space-between;gap:14px;min-width:0}
.ps-nav-list{display:flex;align-items:center;gap:2px;flex-wrap:nowrap}
.ps-nav-item{flex:0 0 auto}
.ps-nav-link{
  position:relative;display:block;
  padding:9px 14px;border-radius:var(--ps-r-pill);
  font-size:15px;font-weight:700;color:var(--ps-ink-soft);white-space:nowrap;
  transition:background var(--ps-fast) var(--ps-ease),color var(--ps-fast) var(--ps-ease);
}
.ps-nav-link:hover{background:var(--ps-paper-50);color:var(--ps-green-800)}
.ps-nav-link[aria-current="page"]{background:var(--ps-green-600);color:var(--ps-white)}
.ps-nav-link[aria-current="page"]::after{
  content:"";position:absolute;right:9px;top:9px;
  width:6px;height:6px;border-radius:50%;background:var(--ps-yellow-400);
}
.ps-nav-cta{
  flex:0 0 auto;
  padding:11px 20px;border-radius:var(--ps-r-pill);
  background:var(--ps-orange-500);color:var(--ps-ink-900);
  font-size:15px;font-weight:900;letter-spacing:.01em;
  box-shadow:0 8px 20px -14px rgba(255,106,26,.95);
  transition:transform var(--ps-fast) var(--ps-ease),background var(--ps-fast) var(--ps-ease);
}
.ps-nav-cta:hover{background:var(--ps-yellow-400);transform:translateY(-1px)}

/* 移动按钮 */
.ps-nav-toggle{
  display:none;
  width:44px;height:38px;border-radius:var(--ps-r-pill);
  border:1px solid var(--ps-line-200);
  background:var(--ps-white);
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
  order:3;
}
.ps-nav-toggle-bar{display:block;width:18px;height:2px;border-radius:2px;background:var(--ps-ink-900);transition:transform var(--ps-fast) var(--ps-ease),opacity var(--ps-fast) var(--ps-ease)}
.ps-nav-toggle[aria-expanded="true"]{background:var(--ps-blue-900);border-color:var(--ps-blue-900)}
.ps-nav-toggle[aria-expanded="true"] .ps-nav-toggle-bar{background:var(--ps-white)}
.ps-nav-toggle[aria-expanded="true"] .ps-nav-toggle-bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.ps-nav-toggle[aria-expanded="true"] .ps-nav-toggle-bar:nth-child(2){opacity:0}
.ps-nav-toggle[aria-expanded="true"] .ps-nav-toggle-bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ===== 5. 页脚 ===== */
.ps-footer{position:relative;margin-top:clamp(48px,7vw,88px);background:var(--ps-blue-900);color:var(--ps-silver-300)}
.ps-footer-diagonal{height:10px;background:linear-gradient(90deg,var(--ps-green-600),var(--ps-orange-500) 58%,var(--ps-yellow-400));clip-path:polygon(0 100%,100% 0,100% 100%)}
.ps-footer-inner{
  max-width:var(--ps-shell);margin:0 auto;
  padding:clamp(40px,6vw,68px) var(--ps-gutter) 34px;
  display:grid;grid-template-columns:1.4fr 1fr 1.3fr;gap:clamp(28px,4vw,52px);
}
.ps-footer-col{min-width:0}
.ps-footer-brand{display:flex;flex-direction:column;gap:16px}
.ps-footer-line{font-size:15px;line-height:1.75;color:var(--ps-silver-300);max-width:32ch}
.ps-footer-pills{display:flex;flex-wrap:wrap;gap:8px}
.ps-footer-pill{
  padding:5px 12px;border-radius:var(--ps-r-pill);
  border:1px solid rgba(199,206,216,.32);
  font-family:var(--ps-mono);font-size:12px;letter-spacing:.06em;color:var(--ps-white);
}
.ps-footer-title{font-size:13px;font-weight:800;letter-spacing:.18em;text-transform:uppercase;color:var(--ps-white);margin-bottom:16px}
.ps-footer-links{display:flex;flex-direction:column;gap:10px}
.ps-footer-links a{font-size:15px;font-weight:600;color:var(--ps-silver-300);transition:color var(--ps-fast) var(--ps-ease),padding-left var(--ps-fast) var(--ps-ease)}
.ps-footer-links a:hover{color:var(--ps-yellow-400);padding-left:4px}
.ps-footer-links--legal{flex-direction:row;flex-wrap:wrap;gap:16px;margin-top:16px}
.ps-footer-links--legal a{color:var(--ps-white);text-decoration:underline;text-decoration-color:rgba(255,210,51,.5);text-underline-offset:4px}
.ps-footer-contact{display:flex;flex-direction:column;gap:10px;font-size:15px;color:var(--ps-white);word-break:break-word}
.ps-footer-label{display:block;font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--ps-green-600);margin-bottom:2px}
.ps-footer-addr{margin-top:16px;font-size:14px;line-height:1.7;color:var(--ps-silver-300)}
.ps-footer-base{
  max-width:var(--ps-shell);margin:0 auto;
  padding:18px var(--ps-gutter) 30px;
  border-top:1px solid rgba(199,206,216,.18);
  display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ps-silver-300);
}
.ps-footer-copy,.ps-footer-icp{max-width:none}
.ps-footer-icp{font-family:var(--ps-mono);letter-spacing:.04em}

/* ===== 6. 通用按钮 ===== */
.ps-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 24px;border-radius:var(--ps-r-pill);
  font-size:16px;font-weight:800;letter-spacing:.01em;line-height:1;
  border:1px solid transparent;
  transition:transform var(--ps-fast) var(--ps-ease),background var(--ps-fast) var(--ps-ease),color var(--ps-fast) var(--ps-ease),border-color var(--ps-fast) var(--ps-ease);
}
.ps-btn:hover{transform:translateY(-2px)}
.ps-btn--primary{background:var(--ps-green-600);color:var(--ps-white);box-shadow:0 10px 24px -18px rgba(5,166,92,1)}
.ps-btn--primary:hover{background:var(--ps-green-800)}
.ps-btn--accent{background:var(--ps-orange-500);color:var(--ps-ink-900);box-shadow:0 10px 24px -16px rgba(255,106,26,1)}
.ps-btn--accent:hover{background:var(--ps-yellow-400)}
.ps-btn--ghost{background:transparent;color:var(--ps-ink-900);border-color:var(--ps-silver-300)}
.ps-btn--ghost:hover{border-color:var(--ps-green-600);color:var(--ps-green-800)}
.ps-btn--sm{padding:9px 18px;font-size:14px}
.ps-btn--block{width:100%}

/* ===== 7. 面包屑 / 正文容器 ===== */
.ps-crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ps-ink-soft);padding:18px 0}
.ps-crumbs li+li::before{content:"/";margin-right:8px;color:var(--ps-silver-300)}
.ps-crumbs a{font-weight:700;color:var(--ps-green-800)}
.ps-crumbs a:hover{color:var(--ps-orange-500)}
.ps-prose{max-width:68ch}
.ps-prose p+p{margin-top:18px}
.ps-prose h2{margin:32px 0 12px;font-size:28px}
.ps-prose h3{margin:24px 0 8px;font-size:20px}
.ps-prose a{color:var(--ps-green-800);font-weight:700;text-decoration:underline;text-decoration-color:rgba(5,166,92,.4);text-underline-offset:4px}
.ps-prose strong{color:var(--ps-green-800)}

/* ===== 8. 面板与网格 ===== */
.ps-grid{display:grid;gap:22px}
.ps-grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.ps-span-4{grid-column:span 4}
.ps-span-5{grid-column:span 5}
.ps-span-6{grid-column:span 6}
.ps-span-7{grid-column:span 7}
.ps-span-8{grid-column:span 8}
.ps-span-12{grid-column:span 12}
.ps-panel{
  position:relative;
  padding:clamp(20px,3vw,32px);
  background:var(--ps-white);
  border:1px solid var(--ps-line-200);
  border-radius:var(--ps-r-md);
  box-shadow:var(--ps-shadow-1);
  transition:border-color var(--ps-base) var(--ps-ease),transform var(--ps-base) var(--ps-ease),box-shadow var(--ps-base) var(--ps-ease);
}
.ps-panel:hover{border-color:var(--ps-silver-300);transform:translateY(-2px);box-shadow:var(--ps-shadow-2)}
.ps-panel--ink{background:var(--ps-blue-700);border-color:rgba(199,206,216,.22);color:var(--ps-white)}
.ps-panel--ink .ps-lead{color:var(--ps-silver-300)}
.ps-panel--cut{clip-path:polygon(0 3%,100% 0,100% 100%,0 100%);padding-top:clamp(30px,4vw,44px)}

/* ===== 9. 索引 / 旁注 / 标签 / 数据 ===== */
.ps-list-index{display:flex;flex-direction:column;border-top:1px solid var(--ps-line-200)}
.ps-list-index li{display:flex;gap:16px;align-items:baseline;padding:14px 4px;border-bottom:1px solid var(--ps-line-200);transition:background var(--ps-fast) var(--ps-ease)}
.ps-list-index li:hover{background:var(--ps-paper-50)}
.ps-list-index-num{font-family:var(--ps-mono);font-size:13px;font-weight:700;color:var(--ps-orange-500);flex:0 0 auto;min-width:34px}
.ps-list-index-title{font-size:16px;font-weight:700}
.ps-list-index-desc{font-size:14px;color:var(--ps-ink-soft);margin-top:2px}
.ps-note{
  padding:16px 18px;border-left:3px solid var(--ps-orange-500);
  background:var(--ps-orange-100);border-radius:0 var(--ps-r-sm) var(--ps-r-sm) 0;
  font-size:15px;line-height:1.7;color:var(--ps-ink-900);
}
.ps-tag{display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--ps-r-pill);background:var(--ps-line-200);font-family:var(--ps-mono);font-size:12px;font-weight:700;color:var(--ps-ink-soft)}
.ps-tag--yellow{background:var(--ps-yellow-400);color:var(--ps-ink-900)}
.ps-tag--green{background:var(--ps-green-600);color:var(--ps-white)}
.ps-metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px}
.ps-metric{padding:16px;border:1px solid var(--ps-line-200);border-radius:var(--ps-r-sm);background:var(--ps-white)}
.ps-metric-num{display:block;font-family:var(--ps-mono);font-size:clamp(1.6rem,3.6vw,2.2rem);font-weight:700;letter-spacing:-.03em;color:var(--ps-ink-900)}
.ps-metric-num em{font-style:normal;font-size:.55em;color:var(--ps-orange-500);margin-left:3px}
.ps-metric--hl .ps-metric-num{color:var(--ps-ink-900);background:linear-gradient(transparent 62%,var(--ps-yellow-400) 62%)}
.ps-metric-label{display:block;margin-top:4px;font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--ps-ink-soft)}
.ps-anchor{position:sticky;top:104px;display:flex;flex-direction:column;gap:4px}
.ps-anchor a{font-size:14px;font-weight:700;color:var(--ps-ink-soft);padding:7px 12px;border-left:2px solid var(--ps-line-200);transition:all var(--ps-fast) var(--ps-ease)}
.ps-anchor a:hover{color:var(--ps-green-800);border-color:var(--ps-green-600);padding-left:16px}

/* ===== 10. 交互组件 ===== */
.ps-tablist{position:relative;display:flex;flex-wrap:wrap;gap:4px;padding:6px;background:var(--ps-line-200);border-radius:var(--ps-r-pill)}
.ps-tab{position:relative;z-index:1;padding:10px 18px;border-radius:var(--ps-r-pill);font-size:15px;font-weight:800;color:var(--ps-ink-soft);white-space:nowrap;transition:color var(--ps-fast) var(--ps-ease)}
.ps-tab[aria-selected="true"]{color:var(--ps-white)}
.ps-tab-indicator{
  position:absolute;top:6px;left:0;z-index:0;height:calc(100% - 12px);width:0;
  border-radius:var(--ps-r-pill);background:var(--ps-green-600);
  transform:translateX(0);
  transition:transform var(--ps-base) var(--ps-ease),width var(--ps-base) var(--ps-ease);
}
.ps-tabpanel{padding-top:22px}
.ps-tabpanel[hidden]{display:none}
.ps-chips{display:flex;flex-wrap:wrap;gap:8px}
.ps-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 15px;border:1px solid var(--ps-silver-300);border-radius:var(--ps-r-pill);
  background:var(--ps-white);font-size:14px;font-weight:700;color:var(--ps-ink-soft);
  transition:all var(--ps-fast) var(--ps-ease);
}
.ps-chip::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--ps-line-200);transition:background var(--ps-fast) var(--ps-ease)}
.ps-chip:hover{border-color:var(--ps-green-600);color:var(--ps-green-800)}
.ps-chip[aria-pressed="true"]{background:var(--ps-green-800);border-color:var(--ps-green-800);color:var(--ps-white)}
.ps-chip[aria-pressed="true"]::before{background:var(--ps-yellow-400)}
.ps-accordion{border:1px solid var(--ps-line-200);border-radius:var(--ps-r-md);background:var(--ps-white);overflow:hidden}
.ps-accordion+.ps-accordion{margin-top:10px}
.ps-accordion>summary{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:16px 18px;font-size:16px;font-weight:800;cursor:pointer;list-style:none}
.ps-accordion>summary::-webkit-details-marker{display:none}
.ps-accordion>summary::after{content:"+";font-family:var(--ps-mono);font-size:20px;color:var(--ps-orange-500);line-height:1}
.ps-accordion[open]>summary::after{content:"–"}
.ps-accordion[open]>summary{color:var(--ps-green-800)}
.ps-accordion-body{padding:0 18px 18px;font-size:15px;color:var(--ps-ink-soft)}

/* ===== 11. 图片容器（页面阶段放置图片） ===== */
.ps-media{
  position:relative;display:block;width:100%;overflow:hidden;
  aspect-ratio:16/10;
  border:1px solid var(--ps-line-200);border-radius:var(--ps-r-md);
  background:
    linear-gradient(135deg,rgba(5,166,92,.16),rgba(255,106,26,.16)),
    var(--ps-blue-700);
}
.ps-media img{width:100%;height:100%;object-fit:cover}
.ps-media--wide{aspect-ratio:16/9}
.ps-media--tall{aspect-ratio:4/5}
.ps-media--square{aspect-ratio:1/1}
.ps-media--scrim::after{content:"";position:absolute;inset:auto 0 0 0;height:42%;background:linear-gradient(180deg,transparent,rgba(11,20,36,.72))}
.ps-media__ph{position:absolute;inset:0;display:grid;place-items:center;font-family:var(--ps-mono);font-size:13px;letter-spacing:.1em;color:rgba(255,255,255,.72)}
.ps-media__tag{position:absolute;top:12px;left:12px;z-index:2}
.ps-figcaption{display:block;margin-top:10px;font-size:13px;color:var(--ps-ink-soft)}

/* ===== 12. 显现动效 ===== */
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity 260ms var(--ps-ease),transform 260ms var(--ps-ease)}
[data-reveal].is-revealed{opacity:1;transform:none}

/* ===== 13. 工具类 ===== */
.ps-visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ===== 14. 响应式 ===== */
@media (max-width:1080px){
  .ps-nav-link{padding:9px 11px;font-size:14px}
  .ps-nav-cta{padding:10px 16px;font-size:14px}
}
@media (max-width:960px){
  .ps-header{top:8px;padding:8px 14px 0}
  .ps-header-inner{flex-wrap:wrap;border-radius:var(--ps-r-lg);padding:8px 10px}
  .ps-brand{flex:1 1 auto}
  .ps-nav-toggle{display:flex}
  .ps-nav{
    position:absolute;left:0;right:0;top:calc(100% + 10px);
    flex:0 0 100%;
    flex-direction:column;align-items:stretch;gap:8px;
    padding:14px;
    background:var(--ps-blue-900);
    border:1px solid rgba(199,206,216,.2);
    border-radius:var(--ps-r-lg);
    box-shadow:var(--ps-shadow-2);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity var(--ps-base) var(--ps-ease),transform var(--ps-base) var(--ps-ease),visibility var(--ps-base) var(--ps-ease);
  }
  .ps-nav[data-open]{opacity:1;visibility:visible;transform:translateY(0)}
  .ps-nav-list{flex-direction:column;align-items:stretch;gap:4px}
  .ps-nav-link{color:var(--ps-silver-300);padding:12px 16px;border-radius:var(--ps-r-sm);font-size:16px}
  .ps-nav-link:hover{background:var(--ps-blue-700);color:var(--ps-white)}
  .ps-nav-link[aria-current="page"]{background:var(--ps-green-600);color:var(--ps-white)}
  .ps-nav-cta{text-align:center;padding:14px 20px;font-size:16px}
  .ps-grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .ps-span-4,.ps-span-5,.ps-span-6,.ps-span-7,.ps-span-8{grid-column:span 6}
  .ps-anchor{position:static}
  .ps-footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  body{font-size:16px}
  .ps-header{padding:8px 12px 0}
  .ps-brand-sub{display:none}
  .ps-section{padding:40px 0}
  .ps-grid{gap:16px}
  .ps-span-4,.ps-span-5,.ps-span-6,.ps-span-7,.ps-span-8,.ps-span-12{grid-column:span 6}
  .ps-panel{border-radius:var(--ps-r-sm)}
  .ps-tablist{border-radius:var(--ps-r-md)}
  .ps-footer-inner{grid-template-columns:1fr;padding-top:36px}
  .ps-footer-base{flex-direction:column;align-items:flex-start}
  .ps-metrics{grid-template-columns:1fr 1fr}
}

/* ===== 15. 动效降级 ===== */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  [data-reveal]{opacity:1;transform:none}
  .ps-nav-cta:hover,.ps-btn:hover,.ps-panel:hover{transform:none}
}