/* ==========================================================================
   赢宝主站 · 共享样式 /assets/site.css
   视觉体系：2008 登记档案库 · 工业蓝 / 铜橙 / 旧纸米黄 / 深墨绿
   ========================================================================== */

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

/* ---------- 变量 ---------- */
:root{
  --archive-navy:#0E2233;
  --blue:#1D5C8C;
  --blue-light:#4E8FBE;
  --copper:#C1662F;
  --copper-light:#E3A272;
  --paper:#F3ECE0;
  --paper-white:#FDFBF7;
  --green:#1F4A3D;
  --cyan:#119C9C;
  --graphite:#4C5A66;
  --ink:#14181C;
  --line:rgba(20,24,28,.14);
  --line-strong:rgba(20,24,28,.3);
  --on-navy:#C9D6E1;
  --font-sans:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular","Cascadia Mono",Consolas,"Liberation Mono","Courier New",monospace;
  --wrap:1180px;
  --gut:clamp(16px,4vw,32px);
  --cut:14px;
  --tick:8px;
}

/* ---------- 基础排版 ---------- */
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  font-feature-settings:"tnum" 1;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-weight:800;letter-spacing:.02em;line-height:1.25;color:var(--ink)}
h1{font-size:clamp(30px,4.6vw,52px)}
h2{font-size:clamp(24px,3.2vw,36px)}
h3{font-size:clamp(18px,2.1vw,23px)}
h4{font-size:16px}
p{max-width:74ch}
a{color:var(--blue);text-decoration:none;transition:color .15s ease,border-color .15s ease}
a:hover{color:var(--copper)}
:focus:not(:focus-visible){outline:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:2px}

.mono{font-family:var(--font-mono);font-feature-settings:"tnum" 1;letter-spacing:.04em}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.tick{display:inline-block;width:var(--tick);height:var(--tick);background:var(--copper);margin-right:8px;vertical-align:middle}
.note-vertical{writing-mode:vertical-rl;font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;color:var(--graphite)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;color:var(--blue);text-transform:uppercase}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--copper)}

/* ---------- 布局容器 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding-left:var(--gut);padding-right:var(--gut)}
.narrow{width:100%;max-width:720px;margin:0 auto}
.section{padding:clamp(46px,7vw,90px) 0}
.section--ruled{border-top:1px solid var(--line)}
.section--paper{background:var(--paper-white)}
.section--navy{background:var(--archive-navy);color:var(--on-navy)}
.section--navy h1,.section--navy h2,.section--navy h3{color:#FFFFFF}
.section--navy p{color:var(--on-navy)}
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(238px,1fr))}
.grid--12{grid-template-columns:repeat(12,1fr)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;padding:12px 22px;border:1px solid var(--blue);background:var(--paper-white);color:var(--blue);font-size:15px;font-weight:700;letter-spacing:.08em;cursor:pointer;clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,0 100%);transition:background .15s ease,color .15s ease,border-color .15s ease}
.btn:hover{background:var(--blue);border-color:var(--blue);color:#fff}
.btn--primary{background:var(--copper);border-color:var(--copper);color:#fff}
.btn--primary:hover{background:var(--ink);border-color:var(--ink);color:#fff}
.btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--ink)}
.btn--ghost:hover{background:var(--ink);border-color:var(--ink);color:var(--paper-white)}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:18px 0;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--graphite)}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__item a{color:var(--graphite)}
.breadcrumb__item a:hover{color:var(--copper)}
.breadcrumb__item+.breadcrumb__item::before{content:"/";color:var(--line-strong)}

/* ==========================================================================
   页头
   ========================================================================== */
.site-header{position:relative;z-index:40;background:var(--paper)}

.skip-link{position:absolute;left:12px;top:-64px;z-index:120;display:inline-block;padding:10px 18px;background:var(--archive-navy);color:#FFFFFF;font-size:14px;letter-spacing:.08em;border-left:3px solid var(--copper);transition:top .15s ease}
.skip-link:hover{color:#FFFFFF}
.skip-link:focus{top:12px}

.read-ruler{position:fixed;top:0;left:0;right:0;height:3px;background:rgba(14,34,51,.22);z-index:100;pointer-events:none}
.read-ruler__fill{display:block;height:100%;width:0;background:var(--copper);transition:width .12s linear}

.archive-bar{background:var(--archive-navy);color:var(--on-navy);border-bottom:2px solid var(--copper);font-family:var(--font-mono);font-size:12px;letter-spacing:.08em}
.archive-bar__inner{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;max-width:var(--wrap);margin:0 auto;padding:14px var(--gut) 10px}
.archive-bar__item{white-space:nowrap}
.archive-bar__divider{width:1px;height:11px;background:rgba(255,255,255,.28)}
.archive-bar__spacer{flex:1 1 auto;min-width:0}
.archive-bar__stamp{color:var(--copper-light);white-space:nowrap}

.masthead{background:var(--paper-white);background-image:repeating-linear-gradient(90deg,rgba(29,92,140,.07) 0 1px,transparent 1px 92px);border-bottom:1px solid var(--line)}
.masthead__inner{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;max-width:var(--wrap);margin:0 auto;padding:26px var(--gut) 22px}
.masthead__note{justify-self:start;writing-mode:vertical-rl;font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;color:var(--graphite)}
.masthead__brand{justify-self:center;display:block;text-align:center;color:var(--ink)}
.masthead__brand:hover{color:var(--ink)}
.masthead__brand-cn{display:block;font-size:clamp(30px,5.2vw,54px);font-weight:900;letter-spacing:.2em;text-indent:.2em;line-height:1.05}
.masthead__brand-en{display:block;margin-top:8px;font-family:var(--font-mono);font-size:clamp(9px,1.2vw,11px);letter-spacing:.42em;text-indent:.42em;color:var(--blue)}
.masthead__side{justify-self:end;display:flex;flex-direction:column;align-items:flex-end;gap:10px;text-align:right}
.masthead__kicker{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--graphite);white-space:nowrap;max-width:none}

.search-entry{display:inline-flex;align-items:center;gap:10px;padding:8px 14px;background:var(--paper-white);border:1px solid var(--blue);color:var(--blue);font-size:13.5px;letter-spacing:.06em;clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,0 100%);transition:background .15s ease,color .15s ease,border-color .15s ease}
.search-entry:hover{background:var(--blue);border-color:var(--blue);color:#FFFFFF}
.search-entry__label{font-weight:700}
.search-entry__code{font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--copper);border-left:1px solid currentColor;padding-left:9px}
.search-entry:hover .search-entry__code{color:var(--copper-light)}

.site-nav{background:var(--paper-white);border-bottom:1px solid var(--line-strong)}
.site-nav__inner{position:relative;max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.site-nav__list{display:flex;justify-content:center;flex-wrap:wrap;gap:clamp(6px,2.4vw,30px)}
.site-nav__list a{display:block;padding:14px 2px;font-size:15px;font-weight:600;letter-spacing:.1em;color:var(--ink);border-bottom:2px solid transparent;transition:color .15s ease,border-color .15s ease,background .15s ease}
.site-nav__list a:hover{color:var(--blue);border-bottom-color:var(--copper)}
.site-nav__list a[aria-current="page"]{color:var(--copper);border-bottom-color:var(--copper)}
.site-nav__list a[aria-current="page"]::before{content:"";display:inline-block;width:5px;height:5px;background:var(--copper);margin-right:8px;vertical-align:middle;transform:translateY(-1px)}

.nav-toggle{display:none;align-items:center;justify-content:space-between;gap:14px;width:100%;padding:14px 0;font-size:14px;font-weight:700;letter-spacing:.14em;color:var(--ink);text-align:left}
.nav-toggle__text{order:1}
.nav-toggle__bars{order:2;position:relative;display:block;width:22px;height:12px;flex:0 0 auto}
.nav-toggle__bars::before,.nav-toggle__bars::after{content:"";position:absolute;left:0;width:22px;height:2px;background:var(--copper);transition:transform .18s ease}
.nav-toggle__bars::before{top:2px}
.nav-toggle__bars::after{bottom:2px}
.site-nav[data-open] .nav-toggle__bars::before{transform:translateY(4px) rotate(45deg)}
.site-nav[data-open] .nav-toggle__bars::after{transform:translateY(-4px) rotate(-45deg)}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer{background:var(--archive-navy);color:var(--on-navy);border-top:3px solid var(--copper)}
.site-footer__inner{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding:clamp(38px,6vw,60px) 0 clamp(28px,4vw,40px)}
.footer-col{min-width:0}
.footer-col__title{margin-bottom:14px;padding-bottom:10px;font-size:14px;font-weight:800;letter-spacing:.16em;color:#FFFFFF;border-bottom:1px solid rgba(255,255,255,.18)}
.footer-col__text{font-size:14px;line-height:1.8;color:var(--on-navy);max-width:none}
.footer-col__code{margin-top:12px;font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--copper-light)}
.footer-col__note{margin-top:10px;font-size:12.5px;line-height:1.7;color:#8FA5B5}
.footer-list{display:grid;gap:8px}
.footer-list a{display:inline-block;padding:3px 0;font-size:14.5px;color:#CBD8E2;border-bottom:1px solid transparent}
.footer-list a:hover{color:#FFFFFF;border-bottom-color:var(--copper-light)}
.footer-list a[data-line]::before{content:"";display:inline-block;width:14px;border-top-width:2px;border-top-style:solid;border-top-color:var(--blue-light);margin-right:9px;vertical-align:middle;transform:translateY(-2px)}
.footer-list a[data-line="blue"]::before{border-top-color:var(--blue-light);border-top-style:solid}
.footer-list a[data-line="green"]::before{border-top-color:var(--cyan);border-top-style:dotted}
.footer-list a[data-line="copper"]::before{border-top-color:var(--copper-light);border-top-style:dashed}
.footer-list--years{display:flex;flex-wrap:wrap;gap:8px}
.footer-list--years a{font-family:var(--font-mono);font-size:13px;letter-spacing:.06em;padding:4px 12px;border:1px solid rgba(255,255,255,.22);color:#CBD8E2}
.footer-list--years a:hover{background:var(--copper);border-color:var(--copper);color:var(--archive-navy)}
.site-footer__base{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;padding:18px 0 24px;border-top:1px solid rgba(255,255,255,.14)}
.site-footer__legal{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.04em;color:#8298A8;max-width:none}
.site-footer__links{display:flex;flex-wrap:wrap;gap:20px}
.site-footer__links a{font-size:13px;color:#CBD8E2;border-bottom:1px solid rgba(255,255,255,.25);padding-bottom:2px}
.site-footer__links a:hover{color:#FFFFFF;border-bottom-color:var(--copper-light)}

/* ==========================================================================
   通用组件
   ========================================================================== */
/* 档案卡 */
.card{display:flex;flex-direction:column;gap:10px;padding:22px 20px;background:var(--paper-white);border:1px solid var(--line);transition:transform .16s ease,border-color .16s ease,background .16s ease}
.card--cut{clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,0 100%)}
.card:hover,.card:focus-within{transform:translateY(-2px);border-color:var(--copper)}
.card__index{align-self:flex-start;padding:2px 8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--copper);background:rgba(193,102,47,.1);border:1px solid rgba(193,102,47,.35)}
.card__title{font-size:19px;font-weight:800;letter-spacing:.02em}
.card__meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--graphite)}
.card p{font-size:15px;color:var(--graphite);max-width:60ch}

/* 面板 */
.panel{padding:clamp(20px,3vw,34px);background:var(--paper-white);border:1px solid var(--line);clip-path:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,0 100%)}
.panel--tint{background:var(--paper)}
.panel--navy{background:var(--archive-navy);border-color:var(--archive-navy);color:var(--on-navy)}
.panel--navy h2,.panel--navy h3{color:#FFFFFF}

/* 规格表 */
.spec-table__wrap{overflow-x:auto;background:var(--paper-white)}
.spec-table{min-width:520px;font-size:15px}
.spec-table caption{padding-bottom:10px;text-align:left;font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--graphite)}
.spec-table th,.spec-table td{padding:10px 12px;text-align:left;vertical-align:top;border:1px solid var(--line)}
.spec-table thead th{background:var(--blue);color:#FFFFFF;font-size:14px;letter-spacing:.06em;border-color:var(--blue)}
.spec-table tbody tr:nth-child(even){background:rgba(243,236,224,.65)}
.spec-table tbody tr:hover{background:rgba(78,143,190,.14)}
.spec-table .num,.spec-table td[data-num]{font-family:var(--font-mono);text-align:right;letter-spacing:.04em}

/* 定义列表 */
.def-list{display:grid;grid-template-columns:minmax(120px,auto) 1fr;border-top:1px solid var(--line)}
.def-list dt{padding:12px 14px 12px 0;font-size:14.5px;font-weight:700;letter-spacing:.04em;color:var(--blue);border-bottom:1px solid var(--line)}
.def-list dd{padding:12px 0;font-size:15.5px;border-bottom:1px solid var(--line)}

/* 时间轴 */
.timeline{position:relative;border-top:1px solid var(--line-strong)}
.timeline__item{display:grid;grid-template-columns:104px 1fr;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}
.timeline__node{font-family:var(--font-mono);font-size:14px;letter-spacing:.08em;color:var(--copper)}
.timeline__node::before{content:"";display:inline-block;width:9px;height:9px;margin-right:10px;background:var(--copper);transform:rotate(45deg);vertical-align:middle;transition:background .15s ease}
.timeline__item:hover .timeline__node::before{background:var(--cyan)}
.timeline__body{font-size:15.5px;color:var(--graphite)}
.timeline__body h3{margin-bottom:6px;font-size:17px;color:var(--ink)}

/* 元信息行 */
.meta-row{display:flex;flex-wrap:wrap;gap:10px 22px;padding:10px 0;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--graphite);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* 印章 */
.stamp{display:inline-block;padding:3px 10px;font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--copper);border:1px solid var(--copper);transform:rotate(-1.5deg)}

/* 图片容器 */
.figure{display:flex;flex-direction:column;gap:10px}
.figure__frame{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--paper-white);border:1px solid var(--line);clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,0 100%)}
.figure__frame img,.figure__frame svg,.figure__frame video{width:100%;height:100%;object-fit:cover}
.figure__placeholder{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--graphite);background-color:var(--paper);background-image:repeating-linear-gradient(135deg,rgba(29,92,140,.12) 0 10px,rgba(29,92,140,0) 10px 20px)}
.figure__caption{padding-left:10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--graphite);border-left:2px solid var(--copper)}
.figure--wide .figure__frame{aspect-ratio:21/9}
.figure--tall .figure__frame{aspect-ratio:3/4}
.figure--square .figure__frame{aspect-ratio:1/1}

/* 标签与筛选 */
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;font-family:var(--font-mono);font-size:13px;letter-spacing:.06em;color:var(--graphite);background:var(--paper-white);border:1px solid var(--line-strong);transition:background .15s ease,color .15s ease,border-color .15s ease}
.chip:hover{border-color:var(--blue);color:var(--blue)}
.chip[aria-pressed="true"],.chip[aria-selected="true"],.chip.is-active{background:var(--cyan);border-color:var(--cyan);color:#FFFFFF}

/* 步骤阶梯 */
.step-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.step-list__item{position:relative;display:flex;flex-direction:column;gap:8px;padding:22px 20px;background:var(--paper-white)}
.step-list__num{font-family:var(--font-mono);font-size:22px;letter-spacing:.06em;color:var(--copper)}
.step-list__item h3{font-size:17px}
.step-list__item p{font-size:14.5px;color:var(--graphite)}

/* 提示块 */
.callout{padding:16px 20px;font-size:15px;color:var(--graphite);background:var(--paper-white);border-left:4px solid var(--cyan)}
.callout strong{color:var(--ink)}

/* 长文 */
.prose{max-width:68ch}
.prose p{margin-bottom:1em}
.prose h2,.prose h3{margin:1.6em 0 .6em}
.prose ul,.prose ol{list-style:square;padding-left:1.3em;margin-bottom:1em}
.prose ol{list-style:decimal}
.prose li{margin-bottom:.4em}
.prose a{border-bottom:1px solid var(--blue-light)}

/* 显现 */
[data-reveal]{opacity:0;transform:translateY(10px);transition:opacity .4s ease,transform .4s ease}
[data-reveal].is-visible{opacity:1;transform:none}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (min-width:901px) and (max-width:1100px){
  .site-nav__list{flex-wrap:nowrap;justify-content:flex-start;gap:26px;overflow-x:auto}
  .site-nav__list a{white-space:nowrap}
}

@media (max-width:900px){
  .site-nav__list{display:none}
  .nav-toggle{display:flex}
  .site-nav[data-open] .site-nav__list{display:flex;flex-direction:column;gap:0;padding-bottom:12px;border-top:1px solid var(--line)}
  .site-nav[data-open] .site-nav__list a{padding:13px 14px;border-bottom:1px solid var(--line);border-left:3px solid transparent}
  .site-nav[data-open] .site-nav__list a:hover{background:rgba(29,92,140,.06);border-left-color:var(--copper)}
  .site-nav[data-open] .site-nav__list a[aria-current="page"]{background:rgba(193,102,47,.1);border-bottom-color:var(--line);border-left-color:var(--copper)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .masthead__inner{grid-template-columns:1fr;gap:14px;padding:22px var(--gut) 20px;text-align:center}
  .masthead__note{justify-self:center;writing-mode:horizontal-tb;letter-spacing:.24em}
  .masthead__side{justify-self:center;align-items:center;text-align:center}
  .grid--12{grid-template-columns:repeat(6,1fr)}
}

@media (max-width:760px){
  .note-vertical{writing-mode:horizontal-tb}
  .archive-bar__spacer{display:none}
  .timeline__item{grid-template-columns:1fr;gap:8px}
  .step-list{grid-template-columns:1fr}
}

@media (max-width:600px){
  body{font-size:16px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .def-list{grid-template-columns:1fr}
  .def-list dt{padding-bottom:2px;border-bottom:0}
  .site-footer__base{justify-content:flex-start}
  .grid--12{grid-template-columns:1fr}
  .search-entry{padding:7px 12px;font-size:13px}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}
  [data-reveal]{opacity:1;transform:none}
  .card:hover,.card:focus-within{transform:none}
}