/* =================================================================
   仲博客户端 · 共享样式 /assets/site.css
   深海蓝基底 + 琥珀金版本强调 + 青瓷绿/朱砂红栏目色标
   ================================================================= */

:root{
  --navy:#0B2545;
  --navy-deep:#071A33;
  --steel:#1B4F72;
  --mist:#DCE7F2;
  --amber:#F2A900;
  --amber-soft:#FFD166;
  --celadon:#2E8B7A;
  --celadon-soft:#A7D8CE;
  --vermilion:#C94B3C;
  --paper:#F4F7FA;
  --ink:#101820;
  --ink-soft:#465563;
  --line:rgba(11,37,69,.16);
  --line-strong:rgba(11,37,69,.34);
  --on-dark:rgba(220,231,242,.82);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono","Courier New",monospace;
  --shell:1180px;
  --gutter:clamp(1rem,4vw,2.5rem);
  --radius:14px;
  --radius-sm:8px;
  --shadow-1:0 1px 0 rgba(11,37,69,.05),0 14px 30px -22px rgba(7,26,51,.55);
  --shadow-2:0 28px 64px -34px rgba(7,26,51,.68);
}

/* ---------- reset 与中文基础排版 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
main{display:block}
#main-content{display:block;scroll-margin-top:calc(var(--masthead-h) + 16px)}
img,svg{max-width:100%;display:block}
h1,h2,h3,h4{line-height:1.25;font-weight:800;color:var(--navy);margin:0 0 .6em;letter-spacing:.012em}
h1{font-size:clamp(1.9rem,4.4vw,3rem)}
h2{font-size:clamp(1.45rem,3vw,2.05rem)}
h3{font-size:clamp(1.12rem,2vw,1.35rem)}
h4{font-size:1rem;letter-spacing:.05em}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.1em;padding-left:1.4em}
li{margin:.2em 0}
a{color:var(--steel);transition:color .18s ease,background-color .18s ease,border-color .18s ease}
a:hover{color:var(--navy)}
button{font:inherit}
table{border-collapse:collapse}
strong{font-weight:800;color:var(--navy)}
::selection{background:var(--amber-soft);color:var(--navy)}
:focus-visible{outline:3px solid var(--amber);outline-offset:3px;border-radius:4px}
.is-mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- 布局容器 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{padding-block:clamp(2.4rem,6vw,4.6rem)}
.section--tint{background:linear-gradient(180deg,rgba(220,231,242,.72),rgba(244,247,250,.9))}
.stack{display:grid;gap:clamp(1rem,2.4vw,1.8rem)}

/* ---------- 跳转链接与滚动进度 ---------- */
.skip-link{
  position:absolute;left:1rem;top:-120px;z-index:120;
  background:var(--amber);color:var(--navy-deep);
  padding:.72em 1.15em;font-weight:800;font-size:.9rem;letter-spacing:.08em;
  text-decoration:none;border-radius:0 0 var(--radius-sm) var(--radius-sm);
  transition:top .18s ease;
}
.skip-link:focus{top:0;color:var(--navy-deep)}

.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:90;
  background:rgba(11,37,69,.28);pointer-events:none;
}
.scroll-progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--amber) 0%,var(--amber-soft) 45%,var(--celadon) 100%);
  transition:width .12s linear;
}

/* ---------- 刊头 ---------- */
.masthead{
  position:sticky;top:0;z-index:60;
  background:var(--navy);
  color:var(--mist);
  border-bottom:1px solid rgba(220,231,242,.18);
  box-shadow:0 18px 40px -34px rgba(7,26,51,.95);
}
.masthead::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.85;
  background-image:
    linear-gradient(rgba(220,231,242,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(220,231,242,.055) 1px,transparent 1px);
  background-size:68px 68px;
}
.masthead::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;pointer-events:none;
  background:linear-gradient(90deg,var(--vermilion) 0 16%,var(--amber) 16% 66%,var(--celadon) 66% 100%);
  opacity:.9;
}
.masthead__strip{
  position:relative;z-index:1;
  background:var(--navy-deep);
  border-bottom:1px solid rgba(220,231,242,.1);
}
.masthead__strip-inner{
  display:flex;flex-wrap:wrap;align-items:center;gap:.5rem 1.1rem;
  padding-block:7px;
  font-size:.76rem;letter-spacing:.14em;color:var(--on-dark);
}
.masthead__strip-item{white-space:nowrap}
.masthead__strip-item + .masthead__strip-item{border-left:1px solid rgba(220,231,242,.22);padding-left:1.1rem}
.masthead__strip-link{
  margin-left:auto;color:var(--amber-soft);text-decoration:none;white-space:nowrap;
  border-bottom:1px solid rgba(242,169,0,.5);
}
.masthead__strip-link:hover{color:var(--amber);border-color:var(--amber)}

.masthead__inner{
  position:relative;z-index:1;
  padding-block:14px 0;
}
.masthead[data-scrolled="true"] .masthead__inner{padding-block:8px 0}
.masthead[data-scrolled="true"] .masthead__brandrow{padding-block:2px 8px}
.masthead[data-scrolled="true"] .brand__sub{opacity:0;height:0;margin:0}

.masthead__brandrow{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:1rem;
  padding-block:8px 14px;
}
.masthead__annotation{
  justify-self:start;margin:0;
  writing-mode:vertical-rl;transform:rotate(180deg);
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.34em;
  color:var(--amber-soft);opacity:.82;
}
.brand{
  display:inline-flex;flex-direction:column;align-items:center;
  text-decoration:none;color:#fff;
}
.brand__name{
  font-size:clamp(1.45rem,3.6vw,2.1rem);
  font-weight:800;letter-spacing:.16em;line-height:1.15;
  text-shadow:0 6px 22px rgba(0,0,0,.35);
}
.brand__sub{
  margin-top:5px;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.38em;
  color:var(--celadon-soft);transition:opacity .2s ease;
}
.brand:hover .brand__name{color:var(--amber-soft)}
.masthead__ribbon{justify-self:end}

/* ---------- 徽标与标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:.45em;
  font-family:var(--font-mono);font-size:.76rem;letter-spacing:.08em;line-height:1.4;
  padding:.36em .8em;border-radius:999px;border:1px solid transparent;
}
.badge--amber{
  background:rgba(242,169,0,.16);
  border-color:rgba(242,169,0,.62);
  color:var(--amber-soft);
}
.tag{
  display:inline-flex;align-items:center;
  font-size:.74rem;font-weight:700;letter-spacing:.08em;line-height:1.5;
  padding:.24em .72em;border-radius:999px;border:1px solid transparent;
}
.tag--notice{background:rgba(201,75,60,.12);color:var(--vermilion);border-color:rgba(201,75,60,.42)}
.tag--guide{background:rgba(46,139,122,.13);color:#1F6A5C;border-color:rgba(46,139,122,.42)}
.tag--archive{background:rgba(27,79,114,.12);color:var(--steel);border-color:rgba(27,79,114,.4)}
.tag--version{background:var(--amber-soft);color:var(--navy-deep);border-color:rgba(242,169,0,.6);font-family:var(--font-mono)}

/* ---------- 导航 ---------- */
.nav{
  display:flex;align-items:center;justify-content:center;flex-wrap:wrap;
  gap:.6rem clamp(.6rem,2.2vw,1.6rem);
  border-top:1px solid rgba(220,231,242,.18);
  padding-block:10px 14px;
}
.nav__list{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;
  gap:.2rem clamp(.25rem,1.2vw,1rem);
  list-style:none;margin:0;padding:0;
}
.nav__item{margin:0}
.nav__link{
  display:inline-block;position:relative;
  padding:.52em .95em;border-radius:999px;
  color:var(--mist);text-decoration:none;
  font-size:.94rem;letter-spacing:.08em;white-space:nowrap;
  border:1px solid transparent;
}
.nav__link:hover{color:#fff;background:rgba(220,231,242,.12);border-color:rgba(220,231,242,.24)}
.nav__link[aria-current="page"]{
  color:#fff;font-weight:700;
  background:rgba(242,169,0,.2);
  border-color:rgba(242,169,0,.62);
  box-shadow:inset 0 -2px 0 var(--amber);
}
.nav__cta{display:flex;align-items:center}

/* ---------- 移动导航按钮 ---------- */
.nav-toggle{
  display:none;align-items:center;gap:.6em;
  background:rgba(220,231,242,.08);
  border:1px solid rgba(220,231,242,.38);
  color:var(--mist);
  border-radius:999px;padding:.55em 1.05em;
  font-size:.88rem;letter-spacing:.1em;cursor:pointer;
  transition:background-color .18s ease,border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{background:rgba(220,231,242,.16);border-color:rgba(220,231,242,.6)}
.nav-toggle__bars{display:inline-grid;gap:3px;width:16px}
.nav-toggle__bars span{
  display:block;height:2px;border-radius:2px;background:currentColor;
  transition:transform .18s ease,opacity .18s ease;
}
.nav-toggle[aria-expanded="true"]{
  background:var(--amber);border-color:var(--amber);color:var(--navy-deep);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:.72em 1.35em;border-radius:999px;border:1px solid transparent;
  font-weight:800;font-size:.92rem;letter-spacing:.08em;line-height:1.4;
  text-decoration:none;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn--amber{background:var(--amber);color:var(--navy-deep);box-shadow:0 12px 26px -18px rgba(242,169,0,.95)}
.btn--amber:hover{background:var(--amber-soft);color:var(--navy-deep)}
.btn--celadon{background:var(--celadon);color:#fff}
.btn--celadon:hover{background:#25705F;color:#fff}
.btn--ghost{background:transparent;border-color:rgba(220,231,242,.55);color:var(--mist)}
.btn--ghost:hover{background:rgba(220,231,242,.14);color:#fff;border-color:rgba(220,231,242,.8)}
.btn--ghost-dark{background:transparent;border-color:var(--line-strong);color:var(--navy)}
.btn--ghost-dark:hover{background:rgba(27,79,114,.1);color:var(--navy);border-color:var(--steel)}
.btn--sm{padding:.5em 1.05em;font-size:.84rem}

/* ---------- 面板 / 摘要层 ---------- */
.panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:clamp(1.1rem,2.6vw,1.9rem);
  box-shadow:var(--shadow-1);
}
.panel--glass{
  background:linear-gradient(150deg,rgba(255,255,255,.78),rgba(220,231,242,.55));
  border-color:rgba(255,255,255,.7);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  box-shadow:var(--shadow-2);
}
.panel__head{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:.6rem 1rem;
  padding-bottom:.8rem;margin-bottom:1rem;
  border-bottom:1px solid var(--line);
}
.panel__title{margin:0;font-size:clamp(1.1rem,2vw,1.32rem);color:var(--navy)}

.eyebrow{
  margin:0 0 .5rem;
  font-size:.72rem;font-weight:800;letter-spacing:.3em;
  color:var(--steel);text-transform:uppercase;
}
.annotation{
  margin:0;
  writing-mode:vertical-rl;transform:rotate(180deg);
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.32em;
  color:var(--steel);opacity:.85;
}

/* ---------- 面包屑 ---------- */
.breadcrumb{margin:0 0 clamp(1rem,2.5vw,1.6rem);font-size:.84rem}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;list-style:none;margin:0;padding:0}
.breadcrumb li{display:inline-flex;align-items:center;margin:0;color:var(--ink-soft)}
.breadcrumb li + li::before{content:"/";margin-right:.5rem;color:rgba(11,37,69,.32);font-family:var(--font-mono)}
.breadcrumb a{color:var(--steel);text-decoration:none;border-bottom:1px solid rgba(27,79,114,.3)}
.breadcrumb a:hover{color:var(--navy);border-color:var(--amber)}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:clamp(1rem,2.4vw,1.7rem)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--sidebar{grid-template-columns:minmax(0,1fr) minmax(240px,320px)}

/* ---------- 正文 ---------- */
.prose{max-width:72ch;line-height:1.85;color:var(--ink)}
.prose h2,.prose h3{margin-top:1.6em}
.prose p{margin-bottom:1.15em}
.prose ul,.prose ol{padding-left:1.5em}
.link-inline{
  color:var(--steel);text-decoration:none;
  border-bottom:1px solid rgba(242,169,0,.75);
  background:linear-gradient(transparent 72%,rgba(255,209,102,0) 72%);
}
.link-inline:hover{color:var(--navy);background:linear-gradient(transparent 72%,rgba(255,209,102,.55) 72%)}

/* ---------- 数据表 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.data-table{width:100%;min-width:520px;font-size:.92rem}
.data-table caption{
  caption-side:top;text-align:left;
  padding:.85rem 1rem;font-weight:800;color:var(--navy);
  border-bottom:1px solid var(--line);
}
.data-table th,.data-table td{padding:.68em .95em;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.data-table thead th{
  background:var(--navy);color:var(--mist);
  font-size:.82rem;letter-spacing:.1em;font-weight:700;white-space:nowrap;
}
.data-table tbody tr:nth-child(even){background:rgba(220,231,242,.42)}
.data-table tbody tr:hover{background:rgba(255,209,102,.24)}
.data-table .is-num{font-family:var(--font-mono);white-space:nowrap}

/* ---------- 图片容器基础规则 ---------- */
.figure-frame{
  margin:0;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(150deg,#fff 0%,var(--mist) 100%);
}
.figure-frame__media{
  position:relative;aspect-ratio:16/10;display:grid;place-items:center;
  background-image:
    linear-gradient(rgba(11,37,69,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(11,37,69,.06) 1px,transparent 1px);
  background-size:44px 44px;
}
.figure-frame__media img{width:100%;height:100%;object-fit:cover}
.figure-frame__hint{
  font-family:var(--font-mono);font-size:.76rem;letter-spacing:.16em;
  color:rgba(11,37,69,.45);text-align:center;padding:1rem;
  border:1px dashed rgba(11,37,69,.28);border-radius:var(--radius-sm);
}
.figure-frame__caption{
  padding:.72rem 1rem;background:#fff;border-top:1px solid var(--line);
  font-size:.82rem;line-height:1.7;color:var(--ink-soft);
}
.figure-frame--chart .figure-frame__media{aspect-ratio:4/3}
.figure-frame--wide .figure-frame__media{aspect-ratio:21/9}

/* ---------- 版本号水印 ---------- */
.watermark{
  position:absolute;pointer-events:none;user-select:none;
  font-family:var(--font-mono);font-weight:800;line-height:1;
  color:rgba(11,37,69,.07);letter-spacing:-.02em;
  font-size:clamp(3.5rem,12vw,8rem);
}

/* ---------- 页脚 ---------- */
.footer{
  position:relative;
  margin-top:clamp(3rem,8vw,6rem);
  background:var(--navy);
  color:var(--mist);
  border-top:1px solid rgba(220,231,242,.16);
}
.footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--vermilion) 0 14%,var(--amber) 14% 62%,var(--celadon) 62% 100%);
}
.footer__inner{padding-block:clamp(2.2rem,5vw,3.6rem) 1.3rem}
.footer__grid{
  display:grid;gap:clamp(1.4rem,3.4vw,2.6rem);
  grid-template-columns:1.5fr 1fr 1fr 1.25fr;
}
.footer__col{min-width:0}
.footer__col--brand{max-width:38ch}
.footer__brand-name{
  margin:0 0 .55rem;
  font-size:1.5rem;font-weight:800;letter-spacing:.16em;color:#fff;line-height:1.2;
}
.footer__brand-note{
  margin:0 0 1.1rem;
  font-size:.88rem;line-height:1.9;color:rgba(220,231,242,.78);
}
.footer__title{
  margin:0 0 1rem;
  font-size:.74rem;font-weight:800;letter-spacing:.28em;
  color:var(--celadon-soft);
}
.footer__links{list-style:none;margin:0;padding:0;display:grid;gap:.55rem}
.footer__links li{margin:0}
.footer__link{
  display:inline-block;
  color:var(--mist);text-decoration:none;font-size:.93rem;
  border-bottom:1px solid transparent;
}
.footer__link:hover{color:var(--amber-soft);border-color:var(--amber)}
.footer__link--quiet{color:rgba(220,231,242,.72);font-size:.82rem}
.footer__link--quiet:hover{color:var(--amber-soft)}

.legend{list-style:none;display:flex;flex-wrap:wrap;gap:.55rem 1.2rem;margin:0;padding:0}
.legend__item{display:inline-flex;align-items:center;gap:.5em;margin:0;font-size:.82rem;color:rgba(220,231,242,.88)}
.legend__swatch{width:13px;height:13px;border-radius:4px;flex:0 0 auto}
.legend__swatch--notice{background:var(--vermilion)}
.legend__swatch--guide{background:var(--celadon)}
.legend__swatch--archive{background:var(--steel);border:1px solid rgba(220,231,242,.6)}

.footer__contact{list-style:none;margin:0;padding:0;display:grid;gap:.75rem;font-size:.88rem}
.footer__contact-item{margin:0;display:grid;gap:.15rem}
.footer__contact-key{
  font-size:.72rem;font-weight:800;letter-spacing:.24em;color:var(--celadon-soft);
}
.footer__contact-value{color:rgba(220,231,242,.88);line-height:1.75;word-break:break-word}

.footer__bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:.6rem 1.5rem;
  margin-top:clamp(1.6rem,4vw,2.4rem);padding-top:1.2rem;
  border-top:1px solid rgba(220,231,242,.16);
}
.footer__copyright{margin:0;font-size:.8rem;color:rgba(220,231,242,.7)}
.footer__legal{list-style:none;display:flex;flex-wrap:wrap;gap:.4rem 1.3rem;margin:0;padding:0}
.footer__legal li{margin:0}

/* ---------- 焦点与减少动态 ---------- */
.masthead a:focus-visible,
.footer a:focus-visible,
.nav-toggle:focus-visible{outline-color:var(--amber-soft)}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .scroll-progress__bar{transition:none}
}

/* ---------- 响应式：平板 ---------- */
@media (max-width:1080px){
  .footer__grid{grid-template-columns:1fr 1fr}
  .footer__col--brand{grid-column:1 / -1;max-width:none}
  .grid--sidebar{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:980px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
/* ---------- 响应式：移动 ---------- */
@media (max-width:900px){
  .masthead__brandrow{grid-template-columns:1fr;justify-items:center;gap:.7rem;padding-block:6px 10px}
  .masthead__annotation{display:none}
  .masthead__ribbon{justify-self:center}
  .nav-toggle{
    display:flex;width:max-content;margin-inline-start:auto;margin-bottom:12px;
  }
  .masthead__inner{padding-block:14px 0}
  .nav{
    display:none;
    position:absolute;left:var(--gutter);right:var(--gutter);top:100%;
    flex-direction:column;align-items:stretch;
    gap:0;
    background:var(--navy-deep);
    border:1px solid rgba(220,231,242,.24);
    border-radius:var(--radius);
    padding:14px;
    box-shadow:var(--shadow-2);
  }
  .nav[data-open="true"]{display:flex}
  .nav__list{flex-direction:column;align-items:stretch;gap:2px;width:100%}
  .nav__link{
    display:block;padding:.78em .9em;border-radius:var(--radius-sm);font-size:1rem;
    border-bottom:1px solid rgba(220,231,242,.12);
  }
  .nav__link:hover{border-color:rgba(220,231,242,.12)}
  .nav__cta{margin-top:12px;width:100%}
  .nav__cta .btn{width:100%}
}
@media (max-width:720px){
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
  .footer__grid{grid-template-columns:minmax(0,1fr)}
  .footer__bottom{flex-direction:column;align-items:flex-start}
  .masthead__strip-inner{font-size:.72rem;letter-spacing:.08em}
  .masthead__strip-link{margin-left:0}
}