:root{
  --abyss:#061A2F;
  --deep:#0B2E4F;
  --tide:#14476F;
  --lane:#1F6E9C;
  --glow:#35E0D0;
  --glow-soft:#9BF3EA;
  --coral:#FF6B4A;
  --foam:#F2F7F9;
  --paper:#E8E2D4;
  --ink:#04121F;
  --font-sans:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","Sarasa Mono SC","SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
  --maxw:1240px;
  --frame-w:1320px;
  --edge:clamp(16px,4vw,56px);
  --radius:3px;
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--abyss);
  color:var(--foam);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  font-synthesis:none;
}
img,svg,video{max-width:100%}
h1,h2,h3,h4{margin:0;line-height:1.16;font-weight:800;letter-spacing:-.02em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
a{color:var(--glow-soft);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--glow)}
ul,ol{margin:0;padding:0}
button{font:inherit}
:focus-visible{outline:2px solid var(--glow);outline-offset:3px;border-radius:1px}
::selection{background:var(--glow);color:var(--ink)}

/* ---------- 通用容器与排版 ---------- */
.ly-wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--edge)}
.ly-section{padding-block:clamp(40px,7vw,88px)}
.ly-prose{max-width:38em;font-size:16.5px;line-height:1.78;color:rgba(242,247,249,.86)}
.ly-prose h2{font-size:clamp(24px,3vw,32px);margin:1.6em 0 .55em;padding-left:14px;border-left:4px solid var(--glow)}
.ly-prose h3{font-size:19px;margin:1.4em 0 .5em;padding-left:12px;border-left:4px solid var(--glow)}
.ly-prose strong{color:var(--foam)}
.ly-prose ul,.ly-prose ol{padding-left:1.3em;margin:0 0 1em}
.ly-prose li{margin-bottom:.35em}
.ly-kicker{display:inline-flex;align-items:center;gap:8px;margin:0 0 10px;font-family:var(--font-mono);font-size:11px;letter-spacing:.28em;color:var(--glow)}
.ly-kicker::before{content:"";width:18px;height:2px;background:var(--coral);flex:none}
.ly-mono{font-family:var(--font-mono);font-size:13px;letter-spacing:.06em;color:var(--glow)}
.ly-num{display:block;font-family:var(--font-mono);font-weight:700;font-size:clamp(34px,5vw,56px);line-height:1;letter-spacing:-.02em;color:var(--glow)}
.ly-tilt{display:inline-block;transform:skewX(-5deg);transform-origin:left bottom;padding-right:.14em}
.ly-tag{display:inline-block;background:var(--paper);color:#1D2A33;font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;padding:3px 9px;border-radius:1px;transform:rotate(-1.6deg);box-shadow:2px 2px 0 rgba(4,18,31,.4)}

/* ---------- 按钮 ---------- */
.ly-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:42px;padding:0 18px;border:1px solid transparent;border-radius:2px;
  font-size:15px;font-weight:700;letter-spacing:.02em;text-decoration:none;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.ly-btn--coral{background:var(--coral);color:#20100A;box-shadow:0 5px 0 -1px rgba(255,107,74,.3)}
.ly-btn--coral:hover{transform:translateY(-2px);box-shadow:0 8px 0 -2px rgba(255,107,74,.36);color:#20100A}
.ly-btn--coral:active{transform:translateY(0)}
.ly-btn--line{border-color:rgba(155,243,234,.45);background:rgba(53,224,208,.07);color:var(--glow-soft)}
.ly-btn--line:hover{background:rgba(53,224,208,.16);border-color:var(--glow);color:var(--glow)}

/* ---------- 跳过链接 ---------- */
.ly-skip{
  position:fixed;left:16px;top:-120px;z-index:200;
  padding:12px 18px;border-radius:2px;
  background:var(--glow);color:var(--ink);font-weight:700;text-decoration:none;
  transition:top .18s ease;
}
.ly-skip:focus{top:12px;color:var(--ink)}

/* ---------- 头部框架 ---------- */
.ly-header{
  position:sticky;top:0;z-index:90;
  background:linear-gradient(180deg,rgba(6,26,47,.99),rgba(6,26,47,.94));
  border-bottom:1px solid rgba(53,224,208,.24);
  box-shadow:0 22px 34px -30px rgba(4,18,31,.95);
}
.ly-header::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--glow),rgba(53,224,208,0) 46%,var(--coral));
}
.ly-header[data-scrolled="true"]{box-shadow:0 26px 40px -26px rgba(4,18,31,1)}
.ly-header__progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:rgba(31,110,156,.3);overflow:hidden}
.ly-header__progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--glow),var(--glow-soft))}
.ly-header__bar{background:var(--abyss)}
.ly-header__inner{
  display:flex;align-items:center;gap:clamp(12px,2vw,30px);
  width:100%;max-width:var(--frame-w);min-height:72px;
  margin-inline:auto;padding-inline:var(--edge);
  border-left:1px solid rgba(53,224,208,.14);
  border-right:1px solid rgba(53,224,208,.14);
}
.ly-brand{display:flex;align-items:center;gap:11px;flex:none;text-decoration:none;color:var(--foam)}
.ly-brand:hover{color:var(--foam)}
.ly-brand__mark{display:block;width:38px;height:38px;flex:none;color:var(--glow)}
.ly-brand__mark svg{display:block;width:100%;height:100%}
.ly-brand__dot{fill:var(--coral)}
.ly-brand__text{display:block}
.ly-brand__name{display:block;font-size:20px;font-weight:800;letter-spacing:.05em;line-height:1.15}
.ly-brand__sub{display:block;font-family:var(--font-mono);font-size:10px;letter-spacing:.28em;color:var(--glow)}

/* ---------- 抽屉 / 导航 ---------- */
.ly-drawer{display:flex;align-items:center;gap:clamp(14px,2.2vw,32px);margin-left:auto;min-width:0}
.ly-nav{min-width:0}
.ly-nav__list{display:flex;align-items:center;gap:clamp(2px,1vw,14px);list-style:none}
.ly-nav__link{
  position:relative;display:inline-block;padding:9px 10px;border-radius:2px;
  font-size:15px;font-weight:500;color:rgba(242,247,249,.78);text-decoration:none;white-space:nowrap;
  transition:color .18s ease,background-color .18s ease;
}
.ly-nav__link:hover{color:var(--glow);background:rgba(53,224,208,.08)}
.ly-nav__link[aria-current="page"]{color:var(--glow);font-weight:700}
.ly-nav__link[aria-current="page"]::after{
  content:"";position:absolute;left:10px;right:10px;bottom:3px;height:2px;background:var(--glow);
}
.ly-actions{display:flex;align-items:center;gap:8px;flex:none}

/* ---------- 移动按钮 ---------- */
.ly-burger{
  display:none;align-items:center;gap:9px;margin-left:auto;
  padding:9px 12px;border:1px solid rgba(53,224,208,.4);border-radius:2px;
  background:rgba(53,224,208,.07);color:var(--glow-soft);cursor:pointer;
  transition:background-color .18s ease,border-color .18s ease;
}
.ly-burger:hover{background:rgba(53,224,208,.16);border-color:var(--glow)}
.ly-burger__stack{display:block;width:18px;height:14px;position:relative}
.ly-burger__stack span{position:absolute;left:0;width:100%;height:2px;background:var(--glow-soft);border-radius:1px;transition:transform .2s ease,opacity .2s ease}
.ly-burger__stack span:nth-child(1){top:0}
.ly-burger__stack span:nth-child(2){top:6px}
.ly-burger__stack span:nth-child(3){top:12px}
.ly-burger__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em}
.ly-header[data-nav-open="true"] .ly-burger__stack span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.ly-header[data-nav-open="true"] .ly-burger__stack span:nth-child(2){opacity:0}
.ly-header[data-nav-open="true"] .ly-burger__stack span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 状态条 ---------- */
.ly-header__strip{background:var(--deep);border-top:1px solid rgba(31,110,156,.4)}
.ly-header__strip-inner{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  width:100%;max-width:var(--frame-w);margin-inline:auto;
  padding:6px var(--edge);
  border-left:1px solid rgba(53,224,208,.14);
  border-right:1px solid rgba(53,224,208,.14);
}
.ly-strip__note{margin:0;font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--lane)}
.ly-status{
  display:inline-flex;align-items:center;gap:8px;padding:3px 11px;
  border:1px solid rgba(53,224,208,.35);border-radius:999px;
  background:rgba(53,224,208,.08);color:var(--glow-soft);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;white-space:nowrap;
}
.ly-status__dot{width:7px;height:7px;border-radius:50%;background:var(--glow);box-shadow:0 0 0 3px rgba(53,224,208,.18);flex:none}
.ly-status__text{display:inline-block}
.ly-status[data-state="closed"]{border-color:rgba(255,107,74,.5);background:rgba(255,107,74,.1);color:var(--coral)}
.ly-status[data-state="closed"] .ly-status__dot{background:var(--coral);box-shadow:0 0 0 3px rgba(255,107,74,.2)}

/* ---------- 页脚 ---------- */
.ly-footer{position:relative;margin-top:clamp(24px,5vw,64px);background:var(--abyss);border-top:1px solid rgba(53,224,208,.22);color:rgba(242,247,249,.82)}
.ly-footer__wave{display:block;width:100%;height:clamp(26px,5vw,58px);color:var(--deep)}
.ly-footer__inner{
  display:grid;grid-template-columns:1.1fr 1.9fr;gap:clamp(26px,4vw,60px);
  width:100%;max-width:var(--maxw);margin-inline:auto;
  padding:clamp(24px,4vw,44px) var(--edge) 0;
}
.ly-footer__logo{display:inline-block;font-size:24px;font-weight:800;letter-spacing:.08em;color:var(--foam);text-decoration:none}
.ly-footer__logo:hover{color:var(--glow)}
.ly-footer__intro{margin:12px 0 0;font-size:15px;line-height:1.75;max-width:30em;color:rgba(242,247,249,.76)}
.ly-contact{display:grid;gap:9px;margin-top:22px}
.ly-contact__item{display:grid;grid-template-columns:52px 1fr;gap:10px;font-size:14px;line-height:1.6;color:rgba(242,247,249,.74)}
.ly-contact__key{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;color:var(--lane);padding-top:3px}
.ly-contact__value{word-break:break-word}
.ly-contact__note{margin:6px 0 0;font-size:13px;line-height:1.7;color:rgba(242,247,249,.5);max-width:32em}
.ly-footer__cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,3vw,32px)}
.ly-footer__col{border-left:1px solid rgba(31,110,156,.45);padding-left:clamp(10px,1.6vw,18px)}
.ly-footer__title{margin:0 0 12px;font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;font-weight:600;color:var(--glow)}
.ly-footer__list{list-style:none;display:grid;gap:8px}
.ly-footer__link{font-size:15px;color:rgba(242,247,249,.8);text-decoration:none;border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease}
.ly-footer__link:hover{color:var(--glow-soft);border-bottom-color:rgba(155,243,234,.6)}
.ly-footer__bottom{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
  width:100%;max-width:var(--maxw);margin:clamp(20px,3.4vw,38px) auto 0;
  padding:16px var(--edge) 22px;border-top:1px solid rgba(31,110,156,.35);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:rgba(242,247,249,.55);
}
.ly-footer__legal{margin:0}
.ly-footer__meta{margin:0}

/* ---------- 面包屑 ---------- */
.ly-breadcrumb{margin-top:18px;font-family:var(--font-mono);font-size:12px;letter-spacing:.05em}
.ly-breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none}
.ly-breadcrumb__item{display:flex;align-items:center;gap:8px;color:rgba(242,247,249,.55)}
.ly-breadcrumb__item + .ly-breadcrumb__item::before{content:"/";color:var(--lane)}
.ly-breadcrumb__link{color:var(--glow-soft);text-decoration:none}
.ly-breadcrumb__link:hover{color:var(--glow);text-decoration:underline}

/* ---------- Bento 网格与面板 ---------- */
.ly-grid{display:grid;gap:clamp(14px,2.2vw,26px)}
.ly-grid--bento{grid-template-columns:repeat(12,minmax(0,1fr))}
.ly-panel{
  position:relative;padding:clamp(18px,2.4vw,28px);
  background:var(--tide);border:1px solid rgba(31,110,156,.6);border-radius:var(--radius);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.ly-panel:hover{transform:translateY(-3px);box-shadow:0 14px 22px -16px rgba(4,18,31,.95);border-color:rgba(53,224,208,.5)}
.ly-panel--narr{background:var(--deep);border-color:rgba(53,224,208,.2)}
.ly-panel--action{
  background:var(--foam);color:var(--ink);border-color:var(--coral);
  box-shadow:7px 7px 0 -3px rgba(255,107,74,.4);
  background-image:linear-gradient(180deg,rgba(232,226,212,.55),rgba(242,247,249,0) 55%);
}
.ly-panel--action h2,.ly-panel--action h3{color:var(--ink)}
.ly-panel--action .ly-mono{color:#0F5A55}
.ly-panel--action p{color:#233240}

/* ---------- 图片容器 ---------- */
.ly-media{
  position:relative;display:block;overflow:hidden;isolation:isolate;
  aspect-ratio:16 / 10;border:1px solid rgba(53,224,208,.22);border-radius:var(--radius);
  color:var(--glow-soft);
  background:
    radial-gradient(120% 90% at 18% 8%,rgba(53,224,208,.22),transparent 58%),
    repeating-linear-gradient(90deg,rgba(155,243,234,.07) 0 1px,transparent 1px 64px),
    linear-gradient(155deg,var(--tide),var(--abyss) 72%);
}
.ly-media img,.ly-media svg{display:block;width:100%;height:100%;object-fit:cover}
.ly-media--wide{aspect-ratio:21 / 9}
.ly-media--portrait{aspect-ratio:3 / 4}
.ly-media--square{aspect-ratio:1 / 1}
.ly-media__caption{
  position:absolute;left:0;bottom:0;z-index:2;
  padding:6px 11px;background:rgba(4,18,31,.84);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.07em;color:var(--glow-soft);
}

/* ---------- 筛选标签 ---------- */
.ly-chip{
  display:inline-flex;align-items:center;gap:6px;padding:6px 12px;
  border:1px solid rgba(53,224,208,.4);border-radius:999px;
  background:rgba(53,224,208,.07);color:var(--glow-soft);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.05em;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.ly-chip:hover{border-color:var(--glow);color:var(--glow)}
.ly-chip[aria-pressed="true"]{background:var(--glow);border-color:var(--glow);color:var(--abyss)}

/* ---------- 表格 ---------- */
.ly-table{width:100%;border-collapse:collapse;font-size:14.5px;color:rgba(242,247,249,.88)}
.ly-table caption{caption-side:top;text-align:left;font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--lane);padding-bottom:10px}
.ly-table th,.ly-table td{padding:12px 14px;text-align:left;vertical-align:top;border-bottom:1px solid rgba(31,110,156,.5)}
.ly-table thead th{background:var(--deep);font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--glow);font-weight:600}
.ly-table tbody tr:nth-child(even){background:rgba(20,71,111,.45)}
.ly-table td:first-child{font-family:var(--font-mono);color:var(--glow-soft)}

/* ---------- 锚点目录 ---------- */
.ly-toc{display:grid;gap:5px;font-family:var(--font-mono);font-size:12px;letter-spacing:.04em}
.ly-toc__link{display:block;padding:7px 11px;border-left:2px solid rgba(31,110,156,.7);color:rgba(242,247,249,.6);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease}
.ly-toc__link:hover{color:var(--foam);border-left-color:var(--glow-soft)}
.ly-toc__link[aria-current="true"]{color:var(--glow);border-left-color:var(--glow);background:rgba(53,224,208,.08)}

/* ---------- 进入视口 ---------- */
[data-reveal]{opacity:1;transform:none}
html[data-js="true"] [data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .24s ease,transform .24s ease}
html[data-js="true"] [data-reveal].is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1079px){
  .ly-burger{display:inline-flex}
  .ly-drawer{display:block;margin-left:0;width:100%;padding:0 var(--edge) 20px}
  .ly-header[data-enhanced="true"] .ly-drawer{
    position:absolute;left:0;right:0;top:100%;
    padding:10px var(--edge) 22px;
    background:var(--abyss);border-bottom:1px solid rgba(53,224,208,.3);
    box-shadow:0 26px 40px -26px rgba(4,18,31,1);
    max-height:calc(100vh - 108px);overflow-y:auto;
    opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-8px);
    transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
  }
  .ly-header[data-enhanced="true"] .ly-drawer[data-open="true"]{
    opacity:1;visibility:visible;pointer-events:auto;transform:none;
  }
  .ly-nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .ly-nav__link{padding:14px 12px;font-size:16.5px;border-radius:0;border-bottom:1px solid rgba(31,110,156,.32)}
  .ly-nav__link::after{display:none}
  .ly-nav__link[aria-current="page"]{box-shadow:inset 4px 0 0 var(--glow);background:rgba(53,224,208,.07)}
  .ly-actions{flex-direction:column;align-items:stretch;margin-top:16px;gap:10px}
  .ly-actions .ly-btn{width:100%}
  .ly-header__inner{min-height:64px}
  .ly-footer__inner{grid-template-columns:1fr}
}
@media (max-width:760px){
  .ly-strip__note{display:none}
  .ly-header__strip-inner{justify-content:flex-end}
  .ly-status{font-size:10px;padding:3px 9px}
  .ly-footer__cols{grid-template-columns:1fr 1fr}
  .ly-footer__col:last-child{grid-column:1 / -1}
  .ly-footer__bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .ly-contact__item{grid-template-columns:46px 1fr}
  .ly-prose{font-size:16px}
}
@media (max-width:520px){
  .ly-brand__name{font-size:18px}
  .ly-brand__mark{width:32px;height:32px}
  .ly-burger__label{display:none}
  .ly-footer__cols{grid-template-columns:1fr}
  .ly-footer__col:last-child{grid-column:auto}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html[data-js="true"] [data-reveal]{opacity:1;transform:none}
}