*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{list-style:none;padding:0}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit}

:root{
  --ink:#0B2540;
  --ink-2:#143A5A;
  --ink-3:#1D4A70;
  --green:#00B45F;
  --green-deep:#00753D;
  --orange:#FF7A1A;
  --cyan:#25D8CE;
  --wine:#7A2340;
  --indigo:#43276B;
  --mist:#E7EDF1;
  --paper:#F8FBFA;
  --black:#161B21;
  --line:rgba(11,37,64,.14);
  --line-soft:rgba(11,37,64,.08);
  --line-invert:rgba(248,251,250,.16);
  --shell:1200px;
  --cut:16px;
  --font-display:"Helvetica Neue","Arial Black","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --ease:cubic-bezier(.22,.8,.28,1);
  --clip-panel:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
  --clip-btn:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
}

body{
  background:var(--paper);
  color:var(--black);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.005em;
  min-height:100vh;
  display:flex;
  flex-direction:column;
}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;letter-spacing:-.02em;line-height:1.08}
strong,b{font-weight:700}
code,kbd,samp{font-family:var(--font-mono)}

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

/* ===== 外壳容器 ===== */
.shell{width:100%;max-width:var(--shell);margin:0 auto;padding-left:clamp(16px,3vw,32px);padding-right:clamp(16px,3vw,32px)}
.shell--narrow{max-width:820px}

/* ===== 跳转链接 ===== */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  padding:10px 18px;background:var(--green);color:var(--ink);
  font-weight:700;font-size:14px;text-decoration:none;
  clip-path:var(--clip-btn);
  transform:translateY(-160%);
  transition:transform .2s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ===== 页头 ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--ink);
  color:var(--paper);
  border-bottom:1px solid rgba(255,255,255,.07);
}
.site-header::before{
  content:"";position:absolute;left:0;top:0;height:3px;width:100%;
  background:linear-gradient(90deg,var(--green) 0 18%,var(--orange) 18% 26%,var(--cyan) 26% 30%,transparent 30%);
  pointer-events:none;
}
.header-rail{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;
  gap:clamp(12px,3vw,48px);
  max-width:1320px;margin:0 auto;
  padding:14px clamp(16px,3vw,40px) 15px;
}

.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;color:var(--paper);flex:none}
.brand-mark{
  width:30px;height:30px;flex:none;
  background:linear-gradient(140deg,var(--green) 0 52%,var(--orange) 52% 100%);
  clip-path:polygon(0 100%,0 36%,44% 0,100% 0,100% 40%,56% 74%);
}
.brand-text{display:block}
.brand-name{
  display:block;font-family:var(--font-display);font-weight:900;
  font-size:20px;line-height:1.1;letter-spacing:.01em;
}
.brand-tag{
  display:block;font-size:11px;line-height:1.4;letter-spacing:.2em;
  color:rgba(248,251,250,.56);font-family:var(--font-mono);
}
.brand--invert .brand-name{color:var(--paper)}

.site-nav{display:flex;align-items:center;gap:8px}
.nav-list{display:flex;align-items:center;gap:clamp(2px,1.2vw,18px);flex-wrap:nowrap}
.nav-list a{
  position:relative;display:block;
  padding:10px 6px;
  font-size:15px;font-weight:600;letter-spacing:.02em;
  color:rgba(248,251,250,.76);
  text-decoration:none;white-space:nowrap;
  transition:color .18s var(--ease),background-color .18s var(--ease);
  border-radius:3px;
}
.nav-list a:hover{color:var(--paper);background:rgba(37,216,206,.1)}
.nav-list a::after{
  content:"";position:absolute;left:6px;right:6px;bottom:2px;height:3px;
  background:var(--green);border-radius:2px;
  transform:scaleX(0);transform-origin:left center;
  transition:transform .22s var(--ease);
}
.nav-list a[aria-current="page"]{color:var(--paper);font-weight:700}
.nav-list a[aria-current="page"]::after{transform:scaleX(1)}

.nav-note{display:none}
.nav-note-title{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;
  color:var(--cyan);margin-bottom:14px;
}
.nav-note-list{display:grid;gap:2px}
.nav-note-list li{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 0;border-bottom:1px solid rgba(248,251,250,.1);
}
.nav-note-key{font-size:14px;color:rgba(248,251,250,.82)}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 14px;
  color:var(--paper);font-size:13px;font-weight:700;letter-spacing:.14em;
  border:1px solid rgba(248,251,250,.28);
  border-radius:3px;
  position:relative;z-index:96;
}
.nav-toggle-bars{position:relative;display:block;width:20px;height:2px;background:currentColor;transition:background-color .18s var(--ease)}
.nav-toggle-bars::before,.nav-toggle-bars::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:currentColor;
  transition:transform .22s var(--ease),top .22s var(--ease);
}
.nav-toggle-bars::before{top:-6px}
.nav-toggle-bars::after{top:6px}
.site-header[data-open] .nav-toggle-bars{background:transparent}
.site-header[data-open] .nav-toggle-bars::before{top:0;transform:rotate(45deg)}
.site-header[data-open] .nav-toggle-bars::after{top:0;transform:rotate(-45deg)}
.nav-toggle-label{display:inline-block}

.nav-scrim{display:none}

.scroll-progress{
  position:absolute;left:0;right:0;bottom:0;height:3px;
  background:rgba(248,251,250,.08);overflow:hidden;pointer-events:none;
}
.scroll-progress > span{
  display:block;height:100%;width:100%;
  background:linear-gradient(90deg,var(--green),var(--cyan) 58%,var(--orange));
  transform:scaleX(0);transform-origin:left center;
  transition:transform .12s linear;
}

/* ===== 页脚 ===== */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,96px);
  background:var(--ink);
  color:var(--paper);
  padding-top:clamp(36px,5vw,64px);
  flex:none;
}
.site-footer::before{
  content:"";position:absolute;left:0;top:0;height:5px;width:100%;
  background:linear-gradient(90deg,var(--green) 0 30%,var(--orange) 30% 38%,var(--cyan) 38% 43%,rgba(248,251,250,.12) 43% 100%);
}
.footer-top{
  display:grid;
  grid-template-columns:1.5fr 1fr 1.25fr;
  gap:clamp(24px,4vw,56px);
  max-width:var(--shell);margin:0 auto;
  padding:0 clamp(16px,3vw,32px) clamp(32px,4vw,56px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:16px}
.footer-line{
  font-size:15px;line-height:1.7;color:rgba(248,251,250,.7);
  max-width:26ch;
}
.footer-cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:2px}
.footer-heading{
  font-family:var(--font-mono);font-size:12px;font-weight:700;
  letter-spacing:.22em;color:var(--cyan);
  margin-bottom:16px;line-height:1.4;
}
.footer-links{display:grid;gap:9px;grid-template-columns:repeat(2,minmax(0,1fr))}
.footer-links a{
  display:inline-block;font-size:15px;color:rgba(248,251,250,.74);
  text-decoration:none;border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-links a:hover,.footer-links a:focus-visible{color:var(--paper);border-bottom-color:var(--green)}
.contact-list{display:grid;gap:14px}
.contact-list li{display:grid;gap:3px}
.contact-key{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:rgba(37,216,206,.85);
}
.contact-val{
  font-family:var(--font-mono);font-size:15px;line-height:1.5;
  color:var(--paper);word-break:break-all;
}
.contact-val--text{font-family:var(--font-body);font-size:15px;line-height:1.6}
.footer-note{
  margin-top:18px;font-size:13px;line-height:1.75;
  color:rgba(248,251,250,.52);max-width:38ch;
  border-left:2px solid var(--orange);padding-left:12px;
}
.footer-bottom{
  max-width:var(--shell);margin:0 auto;
  padding:18px clamp(16px,3vw,32px) 26px;
  border-top:1px solid var(--line-invert);
  display:flex;flex-wrap:wrap;gap:8px 26px;justify-content:space-between;
}
.footer-legal{font-size:13px;line-height:1.6;color:rgba(248,251,250,.56);font-family:var(--font-mono)}
.footer-legal:last-child{font-family:var(--font-body)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  font-family:var(--font-body);font-weight:700;font-size:15px;letter-spacing:.01em;
  text-decoration:none;line-height:1.3;white-space:nowrap;
  clip-path:var(--clip-btn);
  transition:transform .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn:focus-visible{outline:none;box-shadow:inset 0 0 0 3px var(--cyan)}
.btn--primary{background:var(--green);color:var(--ink)}
.btn--primary:hover{background:#00c96b}
.btn--accent{background:var(--orange);color:var(--ink)}
.btn--accent:hover{background:#ff8e3d}
.btn--ghost{background:transparent;color:var(--paper);box-shadow:inset 0 0 0 2px rgba(248,251,250,.34)}
.btn--ghost:hover{box-shadow:inset 0 0 0 2px var(--cyan);color:var(--cyan)}
.btn--light{background:var(--paper);color:var(--ink)}
.btn--light:hover{background:#fff}

/* ===== 排版组件 ===== */
.h-display{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(34px,6vw,64px);line-height:1.02;letter-spacing:-.02em;
  margin-bottom:.42em;
}
.h-section{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(24px,3.4vw,40px);line-height:1.1;letter-spacing:-.02em;
  margin-bottom:.5em;
}
.eyebrow{
  display:block;font-family:var(--font-mono);font-size:12px;font-weight:700;
  letter-spacing:.24em;color:var(--green-deep);
  margin-bottom:12px;line-height:1.5;
}
.eyebrow--invert{color:var(--cyan)}
.prose{max-width:34em;font-size:17px;line-height:1.8}
.prose > * + *{margin-top:1em}
.prose h2,.prose h3{margin-top:1.8em}
.prose ul{list-style:disc;padding-left:1.2em}
.prose li + li{margin-top:.4em}
.mono-num{
  display:block;font-family:var(--font-mono);font-weight:700;
  font-size:clamp(20px,2.4vw,26px);line-height:1.25;letter-spacing:-.01em;
  color:var(--ink);
}
.mono-num em{
  font-style:normal;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--green-deep);margin-left:6px;
}

/* ===== 面包屑 ===== */
.crumbs{padding:20px 0 4px;font-size:13px;line-height:1.6}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs li{display:inline-flex;align-items:center;gap:8px;color:rgba(11,37,64,.55)}
.crumbs li::after{content:"/";color:rgba(11,37,64,.28)}
.crumbs li:last-child::after{display:none}
.crumbs a{
  color:var(--ink-2);text-decoration:none;
  border-bottom:1px solid rgba(11,37,64,.22);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.crumbs a:hover{color:var(--green-deep);border-bottom-color:var(--green)}

/* ===== 切角面板 ===== */
.panel{
  background:var(--mist);color:var(--black);
  padding:clamp(20px,3vw,32px);
  clip-path:var(--clip-panel);
}
.panel--ink{background:var(--ink);color:var(--paper)}
.panel--wine{background:var(--wine);color:var(--paper)}
.panel--indigo{background:var(--indigo);color:var(--paper)}
.panel--mist{background:var(--mist);color:var(--black)}
.panel--ink .mono-num,.panel--wine .mono-num,.panel--indigo .mono-num{color:var(--paper)}
.panel--ink .mono-num em,.panel--wine .mono-num em,.panel--indigo .mono-num em{color:var(--cyan)}

/* ===== 栅格 ===== */
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}

/* ===== 状态标签 ===== */
.status-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;
  font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.08em;
  line-height:1.5;white-space:nowrap;
  border-radius:999px;
  background:rgba(11,37,64,.07);color:var(--ink-2);
  border:1px solid rgba(11,37,64,.14);
}
.status-tag--live{background:rgba(0,180,95,.14);color:var(--green-deep);border-color:rgba(0,180,95,.38)}
.status-tag--sync{background:rgba(37,216,206,.18);color:#0A5A56;border-color:rgba(37,216,206,.5)}
.status-tag--muted{background:rgba(11,37,64,.05);color:rgba(11,37,64,.58);border-color:rgba(11,37,64,.1)}
.panel--ink .status-tag,.panel--wine .status-tag,.panel--indigo .status-tag,.site-nav .status-tag{
  background:rgba(37,216,206,.16);color:var(--cyan);border-color:rgba(37,216,206,.45);
}

/* ===== 悬浮徽章 ===== */
.float-badge{
  display:inline-flex;flex-direction:column;gap:2px;
  padding:12px 16px;
  background:var(--paper);color:var(--ink);
  border-top:3px solid var(--orange);
  font-family:var(--font-mono);font-size:13px;font-weight:700;line-height:1.5;
  animation:badge-float 4s ease-in-out infinite;
}
.float-badge span{display:block;font-size:11px;letter-spacing:.14em;color:rgba(11,37,64,.55)}
@keyframes badge-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-3px)}}

/* ===== 图片容器（页面阶段复用） ===== */
.media-frame{
  position:relative;overflow:hidden;
  aspect-ratio:16/9;
  background:linear-gradient(135deg,var(--ink-2) 0%,var(--indigo) 62%,var(--wine) 100%);
  clip-path:var(--clip-panel);
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.07) 0 1px,transparent 1px 26px);
}
.media-frame img{
  position:relative;z-index:1;
  width:100%;height:100%;object-fit:cover;display:block;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--low{aspect-ratio:3/2}
.media-frame--square{aspect-ratio:1/1}
.media-frame--portrait{aspect-ratio:4/5}

/* ===== 羽翼分隔线 ===== */
.wing-divider{
  height:6px;width:100%;
  background:linear-gradient(90deg,var(--green) 0 26%,var(--orange) 26% 33%,var(--cyan) 33% 39%,rgba(11,37,64,.12) 39% 100%);
  clip-path:polygon(0 0,100% 0,99% 100%,0 100%);
}

/* ===== 侧边索引 ===== */
.toc{position:sticky;top:96px;display:grid;gap:2px}
.toc a{
  display:block;padding:9px 12px;
  font-size:14px;line-height:1.5;text-decoration:none;
  color:var(--ink-2);
  border-left:2px solid rgba(11,37,64,.14);
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.toc a:hover{color:var(--ink);border-left-color:rgba(0,180,95,.55)}
.toc a[aria-current="true"]{
  color:var(--ink);font-weight:700;
  background:rgba(0,180,95,.09);
  border-left-color:var(--green);
}

/* ===== 分段切换 ===== */
.segmented{border-top:3px solid var(--ink)}
.segmented-tabs{display:flex;flex-wrap:wrap;gap:4px;margin-top:0}
.segmented-tab{
  padding:11px 20px;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  background:var(--mist);color:var(--ink-2);
  transition:background-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.segmented-tab:hover{background:#dbe4ea;color:var(--ink)}
.segmented-tab[aria-selected="true"]{
  background:var(--ink);color:var(--paper);
  box-shadow:inset 0 -3px 0 var(--green);
}
.segmented-panel{padding:24px 0 4px}
.segmented-panel[hidden]{display:none}

/* ===== 显现 ===== */
html.js [data-reveal]{
  opacity:0;transform:translate3d(0,14px,0);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
html.js [data-reveal].is-visible{opacity:1;transform:none}

/* ===== 平板 ===== */
@media (max-width:1080px){
  .nav-list{gap:2px}
  .nav-list a{font-size:14px;padding:10px 5px}
  .footer-links{grid-template-columns:1fr}
}

@media (max-width:900px){
  .header-rail{padding:12px clamp(14px,4vw,24px) 13px;gap:14px;min-height:62px}
  .brand-name{font-size:18px}
  .brand-tag{font-size:10px;letter-spacing:.16em}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:fixed;top:0;right:0;bottom:0;
    width:min(86vw,360px);
    display:block;
    background:var(--ink-2);
    padding:92px 24px 40px;
    overflow-y:auto;
    z-index:95;
    transform:translateX(103%);
    transition:transform .28s var(--ease);
    box-shadow:-24px 0 60px rgba(4,15,28,.45);
  }
  .site-header[data-open] .site-nav{transform:translateX(0)}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list li + li{border-top:1px solid rgba(248,251,250,.09)}
  .nav-list a{
    padding:15px 8px;font-size:17px;
    border-bottom:0;
  }
  .nav-list a::after{left:8px;right:auto;width:26px;bottom:9px}
  .nav-note{display:block;margin-top:26px;padding-top:22px;border-top:1px solid rgba(248,251,250,.14)}
  .nav-scrim{
    display:block;position:fixed;inset:0;z-index:90;
    background:rgba(6,20,34,.6);
    opacity:0;pointer-events:none;
    transition:opacity .22s var(--ease);
  }
  .site-header[data-open] .nav-scrim{opacity:1;pointer-events:auto}
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
  .footer-links{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .toc{display:none}
}

/* ===== 手机 ===== */
@media (max-width:600px){
  body{font-size:16px;line-height:1.75}
  .h-display{font-size:clamp(30px,9vw,40px)}
  .h-section{font-size:clamp(22px,7vw,30px)}
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr;gap:28px}
  .footer-links{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-bottom{flex-direction:column;gap:6px}
  .btn{width:100%}
  .footer-cta .btn{width:auto}
  .panel{padding:18px}
  .media-frame{aspect-ratio:4/3}
}

/* ===== 动效偏好 ===== */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto !important}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html.js [data-reveal]{opacity:1;transform:none}
  .scroll-progress > span{transition:none}
  .btn:hover{transform:none}
}