/* ==========================================================================
   永兴集团官方网 · 共享样式表 /assets/site.css
   隐喻：路径手册 —— 纸张叠层 · 印刷边框 · 索引标签 · 清晨屏幕光
   ========================================================================== */

/* ---------- 1. 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,dd,fieldset{margin:0;padding:0}
ul,ol{list-style:none}
img,picture,svg,video,canvas{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;border-spacing:0;width:100%}
[hidden]{display:none !important}

/* ---------- 2. 变量 ---------- */
:root{
  --indigo:#12233F;
  --midnight:#0B172B;
  --jade:#5B8C6E;
  --copper:#C58B4A;
  --cinnabar:#C2452D;
  --paper:#F5F1E8;
  --paper-2:#EDE7DA;
  --ink:#1A1A1A;
  --mist:#B8B5AE;
  --screen:#2E6F8E;
  --screen-soft:#8FC0D8;
  --halftone:#D8D2C4;

  --line-on-dark:rgba(245,241,232,.16);
  --line-on-dark-strong:rgba(245,241,232,.32);
  --line-on-paper:rgba(26,26,26,.16);

  --font-head:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono","Courier New",monospace;

  --radius:2px;
  --wrap:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 3. 基础排版 ---------- */
body{
  min-height:100vh;
  background-color:var(--indigo);
  background-image:radial-gradient(rgba(245,241,232,.055) 1px,transparent 1.2px);
  background-size:7px 7px;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.8;
  letter-spacing:.01em;
}
h1,h2,h3,h4{font-family:var(--font-head);font-weight:800;line-height:1.22;letter-spacing:-.012em}
h1{font-size:clamp(32px,5.6vw,64px)}
h2{font-size:clamp(26px,3.6vw,42px)}
h3{font-size:clamp(19px,2.2vw,26px)}
h4{font-size:18px}
strong{font-weight:700}

/* ---------- 4. 工具类 ---------- */
.wrap{width:min(var(--wrap),100% - 40px);margin-inline:auto}
.wrap--wide{width:min(1440px,100% - 32px);margin-inline:auto}
.mono{font-family:var(--font-mono);font-size:.86em;letter-spacing:.06em}
.eyebrow{font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--copper)}
.lead{max-width:66ch;font-size:clamp(17px,1.6vw,20px);line-height:1.85}
.rule{height:1px;border:0;background:var(--line-on-dark);margin:26px 0}
.stack>*+*{margin-top:16px}
.shift-down{margin-block-start:clamp(16px,3.4vw,44px)}
.texture-halftone{
  background-image:radial-gradient(rgba(245,241,232,.09) 1px,transparent 1.2px);
  background-size:6px 6px;
}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{
  position:absolute;left:14px;top:-70px;z-index:120;
  padding:10px 18px;background:var(--copper);color:var(--midnight);
  font-family:var(--font-head);font-weight:700;border-radius:var(--radius);
  transition:top .2s var(--ease);
}
.skip-link:focus{top:12px}

/* ---------- 5. 焦点 ---------- */
:focus-visible{outline:3px solid var(--copper);outline-offset:3px}
.section--paper :focus-visible,
.panel--paper :focus-visible{outline-color:var(--screen)}

/* ---------- 6. 页头：印刷边框式框架导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--midnight);
  border-bottom:2px solid var(--copper);
  box-shadow:0 16px 32px -26px rgba(0,0,0,.95);
}
.scroll-progress{position:absolute;left:0;right:0;bottom:-2px;height:3px;background:rgba(245,241,232,.08);overflow:hidden}
.scroll-progress__bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--jade),var(--copper));transition:width .12s linear}

.header-rail{
  display:flex;align-items:center;gap:18px;
  padding:6px max(20px,calc((100% - 1440px)/2));
  background:var(--indigo);
  border-bottom:1px solid var(--line-on-dark);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--mist);
}
.header-rail__item:first-child{color:var(--jade)}
.header-rail__item--end{margin-left:auto}

.header-main{
  width:min(1440px,100%);margin-inline:auto;
  display:grid;
  grid-template-columns:minmax(210px,240px) minmax(0,1fr) minmax(230px,270px);
  grid-template-areas:"brand nav tools";
  align-items:stretch;
  border-left:1px solid var(--line-on-dark);
  border-right:1px solid var(--line-on-dark);
}

.brand{
  grid-area:brand;display:flex;align-items:center;gap:12px;
  padding:16px 18px;border-right:1px solid var(--line-on-dark);
}
.brand__seal{
  flex:0 0 auto;width:42px;height:42px;display:grid;place-items:center;
  background:var(--cinnabar);color:var(--paper);
  font-family:var(--font-head);font-size:20px;font-weight:800;
  border:1px solid rgba(245,241,232,.4);
  box-shadow:3px 3px 0 rgba(197,139,74,.6);
}
.brand__lines{display:flex;flex-direction:column;gap:2px;min-width:0}
.brand__name{font-family:var(--font-head);font-size:18px;font-weight:800;letter-spacing:.02em}
.brand__tagline{font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--mist)}

.nav-toggle{
  grid-area:toggle;display:none;align-items:center;gap:10px;
  padding:14px 16px;border-left:1px solid var(--line-on-dark);
  color:var(--paper);font-family:var(--font-mono);font-size:13px;letter-spacing:.12em;
}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:20px}
.nav-toggle__bars i{display:block;height:2px;background:var(--copper);transition:transform .22s var(--ease),opacity .22s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.site-nav{
  grid-area:nav;display:flex;flex-direction:column;justify-content:center;gap:6px;
  padding:12px 16px;min-width:0;
}
.site-nav__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--copper)}
.site-nav__list{display:flex;flex-wrap:wrap;gap:2px}
.site-nav__item{display:flex}
.site-nav__link{
  display:flex;align-items:baseline;gap:8px;
  padding:8px 12px;border:1px solid transparent;border-radius:var(--radius);
  color:var(--paper);font-size:15px;font-weight:600;
  transition:background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.site-nav__num{font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--jade)}
.site-nav__link:hover{border-color:var(--line-on-dark-strong);background:rgba(91,140,110,.18)}
.site-nav__link:hover .site-nav__num{color:var(--copper)}
.site-nav__link[aria-current="page"]{
  border-color:var(--copper);background:rgba(197,139,74,.16);
  box-shadow:inset 0 -3px 0 var(--copper);
}
.site-nav__link[aria-current="page"] .site-nav__num{color:var(--copper)}
.site-nav__foot{display:none}

.header-tools{
  grid-area:tools;display:flex;flex-direction:column;gap:10px;
  padding:14px 18px;border-left:1px solid var(--line-on-dark);min-width:0;
}
.search-box{display:flex;flex-direction:column;gap:4px}
.search-box__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--jade)}
.search-box__input{
  width:100%;padding:9px 12px;
  background:rgba(245,241,232,.06);
  border:1px solid var(--line-on-dark);border-radius:var(--radius);
  color:var(--paper);font-size:14px;
  transition:border-color .18s var(--ease),background-color .18s var(--ease);
}
.search-box__input::placeholder{color:var(--mist)}
.search-box__input:focus{border-color:var(--copper);background:rgba(245,241,232,.1)}
.search-box__status{font-family:var(--font-mono);font-size:11px;line-height:1.55;color:var(--mist)}
.quick-path{display:flex;flex-wrap:wrap;gap:6px}
.quick-path a{
  display:inline-block;padding:5px 10px;
  border:1px dashed var(--line-on-dark-strong);border-radius:999px;
  font-size:12.5px;color:var(--paper);
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.quick-path a:hover{border-style:solid;border-color:var(--copper);color:var(--copper)}

/* ---------- 7. 页脚：堆叠手册背面 ---------- */
.site-footer{
  position:relative;margin-top:clamp(48px,7vw,84px);
  background:var(--midnight);
  border-top:3px solid var(--copper);
  color:var(--paper);
}
.footer-strip{
  display:flex;flex-wrap:wrap;gap:10px 20px;
  padding:8px max(20px,calc((100% - 1440px)/2));
  background:var(--indigo);border-bottom:1px solid var(--line-on-dark);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--jade);
}
.footer-top{
  width:min(1440px,100%);margin-inline:auto;
  display:grid;grid-template-columns:minmax(250px,1.15fr) repeat(3,minmax(0,1fr));
  border-left:1px solid var(--line-on-dark);border-right:1px solid var(--line-on-dark);
}
.footer-brand{padding:34px 26px;border-right:1px solid var(--line-on-dark)}
.footer-brand__name{font-family:var(--font-head);font-size:20px;font-weight:800}
.footer-brand__tagline{margin-top:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--mist)}
.footer-brand__note{margin-top:14px;max-width:34ch;font-size:14px;line-height:1.75;color:var(--mist)}
.footer-brand__cta{margin-top:18px}
.footer-col{padding:34px 24px;border-right:1px solid var(--line-on-dark)}
.footer-col:last-child{border-right:0}
.footer-col__heading{font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--copper)}
.footer-col__list{margin-top:14px;display:flex;flex-direction:column;gap:10px}
.footer-col__list a{font-size:15px;border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease)}
.footer-col__list a:hover{color:var(--copper);border-color:var(--copper)}
.footer-bottom{
  width:min(1440px,100%);margin-inline:auto;
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 26px;
  padding:18px 26px 26px;border-top:1px solid var(--line-on-dark);
  font-size:13.5px;color:var(--mist);
}
.footer-contact{display:flex;flex-wrap:wrap;gap:6px 22px;font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em}
.footer-contact__item{white-space:nowrap}
.footer-address{flex-basis:100%;font-size:13.5px}
.footer-legal{margin-left:auto;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em}
.to-top{
  position:fixed;right:18px;bottom:18px;z-index:70;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 14px;background:var(--midnight);color:var(--paper);
  border:1px solid var(--copper);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s var(--ease),background-color .2s var(--ease);
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--copper);color:var(--midnight)}

/* ---------- 8. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 18px;border:1.5px solid var(--copper);border-radius:var(--radius);
  background:transparent;color:var(--paper);
  font-family:var(--font-head);font-size:15px;font-weight:700;letter-spacing:.02em;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn::after{content:"→";font-family:var(--font-mono);transition:transform .2s var(--ease)}
.btn:hover{background:rgba(197,139,74,.18);transform:translateX(2px)}
.btn:hover::after{transform:translateX(3px)}
.btn--gold{background:var(--copper);border-color:var(--copper);color:var(--midnight)}
.btn--gold:hover{background:#d59a58}
.btn--ghost{border-color:var(--jade)}
.btn--ghost:hover{background:rgba(91,140,110,.22)}
.btn--sm{padding:7px 12px;font-size:13.5px}
.btn--block{width:100%;justify-content:center}

/* ---------- 9. 分区与容器 ---------- */
.section{position:relative;padding:clamp(48px,7vw,88px) 0}
.section--tight{padding:clamp(30px,4vw,52px) 0}
.section--paper{background:var(--paper);color:var(--ink)}
.section--midnight{background:var(--midnight)}
.section-head{display:flex;flex-direction:column;gap:12px;max-width:72ch;margin-bottom:clamp(24px,3vw,40px)}
.section-head__num{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.2em;color:var(--copper)}
.section-head__title{font-size:clamp(26px,4vw,44px)}
.section-head__desc{max-width:62ch;font-size:16.5px;line-height:1.85;color:var(--mist)}
.section-head__rule{width:64px;height:3px;border:0;background:var(--cinnabar)}

.grid{display:grid;gap:clamp(14px,1.8vw,22px)}
.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))}

/* ---------- 10. 面板与卡片 ---------- */
.panel{
  position:relative;
  padding:clamp(20px,2.4vw,30px);
  background:var(--midnight);
  border:1px solid var(--line-on-dark);border-radius:var(--radius);
  box-shadow:6px 6px 0 rgba(0,0,0,.3);
}
.panel--paper{background:var(--paper);color:var(--ink);border-color:var(--line-on-paper);box-shadow:6px 6px 0 rgba(18,35,63,.16)}
.panel--jade{border-color:rgba(91,140,110,.65)}
.panel--gold{border-color:rgba(197,139,74,.7)}
.panel__tag{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--copper);
}
.panel__tag::before{content:"";width:14px;height:2px;background:var(--cinnabar)}
.panel__title{margin-top:10px;font-size:clamp(19px,2.2vw,24px)}
.panel__body{margin-top:12px;font-size:15.5px;line-height:1.8;color:var(--mist)}
.panel__foot{margin-top:18px;display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.panel__stack{display:flex;flex-direction:column;gap:18px}

.card{
  display:flex;flex-direction:column;gap:10px;
  padding:18px;background:rgba(245,241,232,.045);
  border:1px solid var(--line-on-dark);border-left:3px solid var(--jade);
  transition:border-color .2s var(--ease),background-color .2s var(--ease),transform .2s var(--ease);
}
.card:hover{border-left-color:var(--copper);background:rgba(245,241,232,.075);transform:translateX(3px)}
.card__tag{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;color:var(--jade)}
.card__title{font-family:var(--font-head);font-size:18px;font-weight:700;color:var(--paper)}
.card__text{font-size:14.5px;line-height:1.75;color:var(--mist)}
.card__foot{margin-top:auto;font-family:var(--font-mono);font-size:12.5px;color:var(--copper)}

/* ---------- 11. 标记、数据与列表 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;border:1px solid var(--line-on-dark-strong);border-radius:999px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--mist);
}
.badge--new{border-color:var(--cinnabar);color:var(--cinnabar)}
.badge--new::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cinnabar)}
.badge--top{border-color:var(--copper);color:var(--copper)}

.stat{display:flex;flex-direction:column;gap:4px;padding:14px 16px;background:rgba(245,241,232,.03);border:1px solid var(--line-on-dark)}
.stat__value{font-family:var(--font-mono);font-size:clamp(24px,3.4vw,34px);font-weight:700;letter-spacing:.02em;color:var(--copper)}
.stat__label{font-size:13px;color:var(--mist)}

.rank-list{border-top:1px solid var(--line-on-dark)}
.rank-list__item{
  display:grid;grid-template-columns:48px minmax(0,1fr) auto;
  gap:14px;align-items:baseline;padding:14px 4px;border-bottom:1px solid var(--line-on-dark);
  transition:background-color .18s var(--ease);
}
.rank-list__item:hover{background:rgba(197,139,74,.1)}
.rank-list__no{font-family:var(--font-mono);font-size:16px;font-weight:700;color:var(--copper)}
.rank-list__item:nth-child(-n+3) .rank-list__no{color:var(--cinnabar)}
.rank-list__title{font-family:var(--font-head);font-size:16.5px;font-weight:700}
.rank-list__meta{font-family:var(--font-mono);font-size:12.5px;color:var(--mist);white-space:nowrap}

.table-wrap{overflow-x:auto;background:rgba(245,241,232,.02);border:1px solid var(--line-on-dark)}
.data-table{min-width:560px;font-size:15px}
.data-table caption{padding:14px 16px;text-align:left;font-family:var(--font-mono);font-size:12.5px;letter-spacing:.14em;color:var(--copper)}
.data-table th,.data-table td{padding:12px 16px;border-bottom:1px solid var(--line-on-dark);text-align:left;vertical-align:top}
.data-table thead th{background:rgba(18,35,63,.92);font-family:var(--font-mono);font-size:12.5px;letter-spacing:.1em;color:var(--jade);white-space:nowrap}
.data-table tbody tr:hover{background:rgba(245,241,232,.05)}
.data-table td:first-child{font-family:var(--font-mono);color:var(--copper)}

.faq{display:flex;flex-direction:column;gap:10px}
.faq__item{background:rgba(245,241,232,.03);border:1px solid var(--line-on-dark)}
.faq__item[open]{border-color:rgba(197,139,74,.6)}
.faq__q{
  display:flex;align-items:baseline;gap:12px;
  padding:14px 16px;cursor:pointer;list-style:none;
  font-family:var(--font-head);font-size:16px;font-weight:700;
}
.faq__q::-webkit-details-marker{display:none}
.faq__q::before{content:"＋";font-family:var(--font-mono);color:var(--copper)}
.faq__item[open] .faq__q::before{content:"－"}
.faq__a{padding:0 16px 16px 46px;font-size:15px;line-height:1.8;color:var(--mist)}

/* ---------- 12. 图片容器（页面阶段放图） ---------- */
.media{
  position:relative;overflow:hidden;width:100%;aspect-ratio:16/9;
  border:1px solid var(--line-on-dark);
  background:
    linear-gradient(135deg,rgba(18,35,63,.92),rgba(11,23,43,.96)),
    repeating-linear-gradient(45deg,rgba(216,210,196,.07) 0 6px,transparent 6px 12px);
}
.media img,.media picture img{width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:21/9}
.media--square{aspect-ratio:1/1}
.media--portrait{aspect-ratio:4/5}
.media__caption{margin-top:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--mist)}
.media__badge{
  position:absolute;left:12px;top:12px;padding:3px 9px;
  background:var(--cinnabar);color:var(--paper);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
}

/* ---------- 13. 时间线 ---------- */
.timeline{position:relative;display:flex;flex-direction:column;gap:22px;padding-left:26px;border-left:2px solid var(--line-on-dark-strong)}
.timeline__item{position:relative}
.timeline__dot{position:absolute;left:-33px;top:8px;width:12px;height:12px;background:var(--copper);border:2px solid var(--midnight)}
.timeline__time{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.14em;color:var(--jade)}
.timeline__title{margin-top:6px;font-size:19px}
.timeline__text{margin-top:6px;font-size:15px;line-height:1.8;color:var(--mist)}

/* ---------- 14. 筛选与面包屑 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.filter-bar__label{font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--mist)}
.filter-chip{
  padding:7px 14px;border:1px solid var(--line-on-dark-strong);border-radius:999px;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.06em;color:var(--paper);
  transition:background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.filter-chip:hover{border-color:var(--copper);color:var(--copper)}
.filter-chip[aria-pressed="true"]{background:var(--copper);border-color:var(--copper);color:var(--midnight);font-weight:700}

.path-bar{background:var(--midnight);border-bottom:1px solid var(--line-on-dark)}
.path-bar__inner{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:12px 0;font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em;color:var(--mist);
}
.path-bar__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.path-bar__item{display:flex;align-items:center;gap:8px}
.path-bar__link{color:var(--screen-soft);border-bottom:1px solid rgba(143,192,216,.45)}
.path-bar__link:hover{color:var(--copper);border-color:var(--copper)}
.path-bar__sep{color:rgba(184,181,174,.6)}
.path-bar__current{color:var(--paper)}
.path-bar__copy{
  margin-left:auto;padding:5px 12px;
  border:1px dashed var(--line-on-dark-strong);
  font-family:var(--font-mono);font-size:12px;color:var(--mist);
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.path-bar__copy:hover{border-style:solid;border-color:var(--copper);color:var(--copper)}
.path-bar__status{font-family:var(--font-mono);font-size:12px;color:var(--jade)}

/* ---------- 15. 正文块 ---------- */
.prose{max-width:72ch}
.prose p{font-size:16.5px;line-height:1.9;color:var(--mist)}
.prose p+p{margin-top:16px}
.prose ul{margin-top:14px;display:flex;flex-direction:column;gap:10px}
.prose li{position:relative;padding-left:18px;font-size:16px;line-height:1.8;color:var(--mist)}
.prose li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:2px;background:var(--copper)}
.prose a{color:var(--screen-soft);border-bottom:1px solid rgba(143,192,216,.45)}

/* ---------- 16. 浅色分区统一修正 ---------- */
.section--paper .section-head__desc,
.section--paper .prose p,
.section--paper .prose li,
.section--paper .card__text,
.section--paper .panel__body,
.section--paper .timeline__text,
.section--paper .faq__a,
.section--paper .stat__label{color:#4C4A44}
.section--paper .prose a{color:var(--screen)}
.section--paper .card{background:#fff;border-color:var(--line-on-paper);border-left-color:var(--jade)}
.section--paper .card__title,
.section--paper .panel__title{color:var(--ink)}
.section--paper .card__foot{color:#8A5F2A}
.section--paper .badge{color:#5C5A52;border-color:rgba(26,26,26,.28)}
.section--paper .badge--new{color:var(--cinnabar);border-color:var(--cinnabar)}
.section--paper .badge--top{color:#8A5F2A;border-color:var(--copper)}
.section--paper .stat{background:#fff;border-color:var(--line-on-paper)}
.section--paper .stat__value{color:#8A5F2A}
.section--paper .rank-list,
.section--paper .rank-list__item{border-color:var(--line-on-paper)}
.section--paper .rank-list__meta{color:#5C5A52}
.section--paper .timeline{border-color:var(--line-on-paper)}
.section--paper .timeline__dot{border-color:var(--paper)}
.section--paper .faq__item{background:#fff;border-color:var(--line-on-paper)}
.section--paper .table-wrap{background:#fff;border-color:var(--line-on-paper)}
.section--paper .data-table th,
.section--paper .data-table td{border-color:var(--line-on-paper);color:var(--ink)}
.section--paper .data-table thead th{background:var(--paper-2);color:#4C4A44}
.section--paper .filter-chip{color:var(--ink);border-color:rgba(26,26,26,.3)}
.section--paper .filter-chip:hover{border-color:var(--copper);color:#8A5F2A}
.section--paper .filter-chip[aria-pressed="true"]{background:var(--copper);color:var(--midnight)}

/* ---------- 17. 显现动效 ---------- */
[data-reveal]{opacity:0;transform:translateY(20px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 18. 响应式 ---------- */
@media (max-width:1200px){
  .header-main{
    grid-template-columns:minmax(0,1fr) auto;
    grid-template-areas:"brand toggle" "nav nav" "tools tools";
    border-left:0;border-right:0;
  }
  .brand{border-right:0}
  .nav-toggle{display:inline-flex}
  .site-nav{
    max-height:0;opacity:0;overflow:hidden;
    padding:0 18px;border-top:1px solid transparent;
    transition:max-height .36s var(--ease),opacity .3s var(--ease),padding .3s var(--ease),border-color .3s var(--ease);
  }
  .site-nav[data-open]{max-height:1500px;opacity:1;padding:14px 18px 18px;border-top-color:var(--line-on-dark)}
  .site-nav__list{flex-direction:column;gap:6px}
  .site-nav__link{border:1px solid var(--line-on-dark);padding:11px 14px}
  .site-nav__foot{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
  .header-tools{border-left:0;border-top:1px solid var(--line-on-dark)}
  .footer-top{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1;border-right:0;border-bottom:1px solid var(--line-on-dark)}
}
@media (max-width:980px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:720px){
  body{font-size:16px}
  .wrap{width:min(var(--wrap),100% - 28px)}
  .header-rail{gap:10px;font-size:10.5px;letter-spacing:.1em}
  .brand{padding:12px 14px}
  .brand__seal{width:36px;height:36px;font-size:17px}
  .brand__name{font-size:16px}
  .brand__tagline{font-size:10px}
  .footer-top{grid-template-columns:1fr}
  .footer-brand{padding:26px 20px}
  .footer-col{padding:24px 20px;border-right:0;border-bottom:1px solid var(--line-on-dark)}
  .footer-col:last-child{border-bottom:0}
  .footer-bottom{padding:16px 20px 26px}
  .footer-legal{margin-left:0}
  .path-bar__copy{margin-left:0}
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .rank-list__item{grid-template-columns:36px minmax(0,1fr)}
  .rank-list__meta{grid-column:2}
  .to-top{right:12px;bottom:12px}
}

/* ---------- 19. 降低动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1;transform:none}
  .btn:hover,.card:hover{transform:none}
  .site-nav{transition:none}
  .to-top{transform:none}
}