/* ==========================================================================
   杏悦地址 · 共享样式 /assets/site.css
   夜蓝为底，杏橙为光，纸感为档；头部与页脚由外壳统一注入
   ========================================================================== */

/* ---------- 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,hr{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
hr{border:0}

/* ---------- 2. 变量 ---------- */
:root{
  --c-apricot:#F2A65A;
  --c-apricot-deep:#C96F2E;
  --c-night:#16213E;
  --c-night-deep:#0B1026;
  --c-night-card:#243B5A;
  --c-sand:#F7F1E6;
  --c-paper:#EFE6D8;
  --c-pomegranate:#B83A3A;
  --c-poplar:#D9A441;
  --c-glow:#FFF6E9;
  --c-mist:#7B8CA6;
  --c-ink:#211C18;

  --surface:#FFFFFF;
  --text:var(--c-ink);
  --muted:rgba(33,28,24,.68);
  --hairline:rgba(33,28,24,.10);

  --font-display:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","SimSun",serif;
  --font-body:Inter,"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;

  --radius-xs:8px;
  --radius-sm:14px;
  --radius-md:22px;
  --radius-lg:34px;
  --radius-pill:999px;

  --shadow-soft:0 18px 40px -26px rgba(11,16,38,.45);
  --shadow-lift:0 28px 52px -30px rgba(11,16,38,.55);
  --shadow-lamp:0 0 30px rgba(242,166,90,.35);

  --gutter:clamp(1.15rem,4vw,3rem);
  --width-page:1440px;
  --width-read:68ch;
  --space-section:clamp(3.5rem,8vw,7.5rem);

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 3. 中文排版基础 ---------- */
body{
  display:flex;
  flex-direction:column;
  min-height:100vh;
  background:var(--c-sand);
  color:var(--text);
  font-family:var(--font-body);
  font-size:clamp(17px,1.02vw + 13px,19px);
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
#main-content{flex:1 1 auto;display:block}

h1,h2,h3,h4,h5{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.16;
  letter-spacing:-.01em;
  color:inherit;
  text-wrap:balance;
}
h1,.display-1{font-size:clamp(2.6rem,7.2vw,6.4rem);font-weight:900;letter-spacing:-.025em}
h2,.display-2{font-size:clamp(1.9rem,4vw,3.3rem);letter-spacing:-.02em}
h3{font-size:clamp(1.22rem,2vw,1.65rem)}
h4{font-size:1.08rem;font-weight:700}
p{text-wrap:pretty}

::selection{background:rgba(242,166,90,.42);color:var(--c-ink)}

/* ---------- 4. 焦点与无障碍 ---------- */
:focus-visible{
  outline:3px solid var(--c-poplar);
  outline-offset:3px;
  border-radius:6px;
}
.site-header :focus-visible,
.site-footer :focus-visible{
  outline-color:var(--c-apricot);
  box-shadow:0 0 0 5px rgba(242,166,90,.28);
}
.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:1rem;top:-5rem;z-index:200;
  padding:.72rem 1.15rem;border-radius:var(--radius-pill);
  background:var(--c-glow);color:var(--c-night-deep);
  font-weight:700;font-size:.9rem;
  box-shadow:0 12px 30px -14px rgba(11,16,38,.7);
  transition:top .2s var(--ease);
}
.skip-link:focus{top:1rem}

/* ---------- 5. 页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  isolation:isolate;
  background:linear-gradient(180deg,#182447 0%,#101A34 60%,#0B1026 100%);
  color:var(--c-glow);
  border-bottom:1px solid rgba(255,246,233,.12);
}
.site-header::before{
  content:"";
  position:absolute;inset:0;
  pointer-events:none;
  background:
    radial-gradient(38rem 14rem at 5% 130%,rgba(242,166,90,.36),transparent 70%),
    radial-gradient(22rem 12rem at 94% -50%,rgba(217,164,65,.2),transparent 72%);
}
.site-header__inner{
  position:relative;
  z-index:1;
  width:min(var(--width-page),calc(100% - var(--gutter) * 2));
  margin-inline:auto;
  display:flex;
  align-items:center;
  gap:clamp(.75rem,2.4vw,2.25rem);
  min-height:4.6rem;
  padding-block:.6rem;
}

/* 品牌灯盏 */
.brand{
  display:flex;align-items:center;gap:.7rem;
  flex:0 0 auto;
  padding:.3rem .5rem;
  border-radius:var(--radius-sm);
  transition:box-shadow .2s var(--ease);
}
.brand:hover{box-shadow:0 0 26px rgba(242,166,90,.28)}
.brand__lamp{
  flex:0 0 auto;
  width:34px;height:34px;border-radius:50% 50% 46% 46%;
  background:radial-gradient(circle at 50% 32%,#FFF6E9,#F2A65A 46%,#C96F2E 100%);
  box-shadow:0 0 0 1px rgba(255,246,233,.4),0 0 22px 5px rgba(242,166,90,.45);
}
.brand__text{display:flex;flex-direction:column;line-height:1.28}
.brand__name{
  font-family:var(--font-serif);
  font-weight:700;font-size:1.14rem;letter-spacing:.14em;
}
.brand__tag{
  font-size:.7rem;letter-spacing:.08em;
  color:rgba(255,246,233,.6);
}

/* 移动端开关 */
.nav-toggle{
  display:none;
  margin-left:auto;
  align-items:center;
  gap:.55rem;
  padding:.52rem .9rem;
  border-radius:var(--radius-pill);
  border:1px solid rgba(255,246,233,.28);
  background:rgba(255,246,233,.06);
  color:var(--c-glow);
  font-size:.88rem;
  transition:background-color .18s var(--ease),border-color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--c-apricot);background:rgba(242,166,90,.16)}
.nav-toggle__bars{
  position:relative;
  width:20px;height:2px;border-radius:2px;
  background:currentColor;
  transition:background-color .2s var(--ease);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";position:absolute;left:0;
  width:20px;height:2px;border-radius:2px;
  background:currentColor;
  transition:transform .2s var(--ease);
}
.nav-toggle__bars::before{top:-6px}
.nav-toggle__bars::after{top:6px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-6px) rotate(-45deg)}

/* 主导航 */
.site-nav{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:clamp(.5rem,1.6vw,1.4rem);
}
.site-nav__list{display:flex;align-items:center;gap:.15rem;flex-wrap:wrap}
.site-nav__item{display:flex}
.site-nav__link{
  position:relative;
  display:block;
  padding:.5rem .78rem;
  border-radius:6px 6px 15px 15px;
  font-size:.93rem;font-weight:500;letter-spacing:.02em;
  color:rgba(255,246,233,.82);
  transition:color .18s var(--ease),background-color .18s var(--ease),box-shadow .18s var(--ease);
}
.site-nav__link::after{
  content:"";
  position:absolute;left:.78rem;right:.78rem;bottom:.2rem;height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--c-apricot),var(--c-poplar));
  transform:scaleX(0);transform-origin:left center;
  transition:transform .22s var(--ease);
}
.site-nav__link:hover,
.site-nav__link:focus-visible{
  color:#fff;
  background:rgba(242,166,90,.14);
  box-shadow:0 0 24px rgba(242,166,90,.24);
}
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{
  color:#25170A;
  background:linear-gradient(180deg,var(--c-glow),var(--c-apricot) 70%,var(--c-apricot-deep));
  box-shadow:0 10px 24px -12px rgba(242,166,90,.95),0 0 0 1px rgba(255,246,233,.5) inset;
  font-weight:700;
}
.site-nav__link[aria-current="page"]::after{transform:scaleX(0)}

.site-nav__aside{
  display:flex;align-items:center;gap:.7rem;
  padding-left:clamp(.5rem,1.2vw,1rem);
  border-left:1px solid rgba(255,246,233,.16);
}
.utility-nav{display:flex;align-items:center;font-size:.8rem}
.utility-nav__item{display:flex;align-items:center}
.utility-nav__item + .utility-nav__item{
  margin-left:.45rem;padding-left:.75rem;
  border-left:1px solid rgba(255,246,233,.18);
}
.utility-nav__link{
  color:rgba(255,246,233,.58);
  padding:.25rem .2rem;
  border-radius:var(--radius-pill);
  transition:color .18s var(--ease);
}
.utility-nav__link:hover{color:var(--c-apricot)}

/* 阅读进度光线 */
.scroll-progress{
  position:absolute;left:0;right:0;bottom:0;
  z-index:2;height:2px;
  overflow:hidden;pointer-events:none;
}
.scroll-progress__bar{
  display:block;width:100%;height:100%;
  transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--c-apricot-deep),var(--c-apricot),var(--c-poplar));
  box-shadow:0 0 12px rgba(242,166,90,.75);
  transition:transform .14s linear;
}

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.72rem 1.4rem;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-weight:650;font-size:.95rem;line-height:1.2;
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),
             background-color .18s var(--ease),color .18s var(--ease),
             border-color .18s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn--lamp{
  background:linear-gradient(135deg,var(--c-glow),var(--c-apricot) 58%,var(--c-apricot-deep));
  color:#2A1A0C;
  box-shadow:0 12px 26px -14px rgba(242,166,90,.95);
}
.btn--lamp:hover{box-shadow:0 16px 32px -12px rgba(242,166,90,1)}
.btn--ghost{border-color:rgba(255,246,233,.34);color:var(--c-glow)}
.btn--ghost:hover{background:rgba(255,246,233,.1);border-color:var(--c-apricot)}
.btn--outline{border-color:var(--hairline);background:rgba(255,246,233,.7);color:var(--c-ink)}
.btn--outline:hover{border-color:var(--c-apricot-deep);color:var(--c-apricot-deep)}
.btn--quiet{padding-inline:.45rem;color:var(--c-apricot-deep);border-color:transparent;background:none}
.btn--quiet:hover{color:#8A4715}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:var(--space-section);
  overflow:hidden;
  background:linear-gradient(180deg,#16213E 0%,#0B1026 70%);
  color:rgba(255,246,233,.8);
}
.site-footer__glow{
  position:absolute;left:0;right:0;top:0;height:70%;
  pointer-events:none;
  background:
    radial-gradient(30rem 12rem at 12% 0%,rgba(242,166,90,.32),transparent 70%),
    radial-gradient(24rem 10rem at 84% 6%,rgba(217,164,65,.18),transparent 72%);
}
.site-footer__inner{
  position:relative;
  width:min(var(--width-page),calc(100% - var(--gutter) * 2));
  margin-inline:auto;
  display:grid;
  grid-template-columns:minmax(16rem,1.05fr) minmax(0,2fr);
  gap:clamp(2rem,5vw,4.5rem);
  padding-block:clamp(2.75rem,6vw,5rem);
}
.footer-brand{display:flex;flex-direction:column;gap:.85rem}
.footer-brand__mark{
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--font-serif);
  font-size:1.55rem;font-weight:700;letter-spacing:.16em;
  color:var(--c-glow);
}
.footer-brand__mark::before{
  content:"";
  width:12px;height:12px;border-radius:50%;
  background:radial-gradient(circle at 38% 32%,#FFF6E9,#F2A65A 56%,#C96F2E);
  box-shadow:0 0 18px 4px rgba(242,166,90,.55);
}
.footer-brand__line{font-size:.95rem;color:rgba(255,246,233,.62);max-width:34ch}
.footer-contact{display:flex;flex-direction:column;gap:.5rem;font-size:.92rem}
.footer-contact__item{display:flex;gap:.6rem;align-items:baseline;color:rgba(255,246,233,.82)}
.footer-contact__label{
  flex:0 0 3.2rem;
  font-size:.76rem;letter-spacing:.16em;
  color:var(--c-mist);
}
.footer-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(1.25rem,3vw,2.5rem);
}
.footer-col__title{
  margin-bottom:.9rem;
  font-size:.78rem;font-weight:700;letter-spacing:.22em;
  color:var(--c-apricot);
}
.footer-col__list{display:flex;flex-direction:column;gap:.55rem}
.footer-col__link{
  font-size:.95rem;
  color:rgba(255,246,233,.72);
  transition:color .18s var(--ease);
}
.footer-col__link:hover{
  color:var(--c-glow);
  text-decoration:underline;
  text-decoration-color:var(--c-poplar);
  text-decoration-thickness:2px;
  text-underline-offset:.35em;
}
.site-footer__base{
  position:relative;
  width:min(var(--width-page),calc(100% - var(--gutter) * 2));
  margin-inline:auto;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:.6rem 1.6rem;
  padding-block:1.1rem 1.5rem;
  border-top:1px solid rgba(255,246,233,.14);
  font-size:.82rem;
  color:rgba(255,246,233,.55);
}
.site-footer__legal{letter-spacing:.04em}

/* ---------- 8. 容器与分区 ---------- */
.container{
  width:min(var(--width-page),calc(100% - var(--gutter) * 2));
  margin-inline:auto;
}
.container--read{width:min(var(--width-read),calc(100% - var(--gutter) * 2))}
.section{padding-block:var(--space-section)}
.section--tight{padding-block:clamp(2.5rem,5vw,4.25rem)}
.section--paper{background:linear-gradient(180deg,var(--c-paper),#F3EADC)}
.section--night{
  background:
    radial-gradient(34rem 16rem at 8% 0%,rgba(242,166,90,.22),transparent 68%),
    linear-gradient(180deg,#16213E,#0B1026);
  color:var(--c-glow);
}
.section--night .muted{color:rgba(255,246,233,.66)}
.section--night h1,.section--night h2,.section--night h3{color:var(--c-glow)}

.stack{display:flex;flex-direction:column;gap:clamp(1rem,2vw,1.75rem)}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem}

/* ---------- 9. 文本层级 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:.6rem;
  font-size:.76rem;font-weight:700;letter-spacing:.24em;
  color:var(--c-apricot-deep);
}
.eyebrow::before{
  content:"";
  width:9px;height:9px;border-radius:50%;
  background:radial-gradient(circle at 38% 32%,#FFF6E9,#F2A65A 58%,#C96F2E);
  box-shadow:0 0 14px 3px rgba(242,166,90,.5);
}
.section--night .eyebrow{color:var(--c-apricot)}
.lede{
  font-size:clamp(1.04rem,1.35vw,1.3rem);
  line-height:1.78;
  color:var(--muted);
  max-width:48ch;
}
.prose{color:var(--muted)}
.prose p + p{margin-top:1rem}
.prose h2,.prose h3{margin-top:2rem;margin-bottom:.75rem;color:var(--text)}
.prose ul{margin-top:.75rem;display:flex;flex-direction:column;gap:.4rem}
.prose li{padding-left:1.15rem;position:relative}
.prose li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:7px;height:7px;border-radius:50%;
  background:var(--c-poplar);
}
.muted{color:var(--muted)}
.hl{
  font-weight:700;
  background:linear-gradient(transparent 64%,rgba(217,164,65,.45) 64%);
  padding-bottom:.05em;
}

/* ---------- 10. 面包屑 ---------- */
.breadcrumb{margin-block:1.6rem 0;font-size:.84rem;color:var(--muted)}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center}
.breadcrumb__item{display:flex;align-items:center}
.breadcrumb__item + .breadcrumb__item::before{
  content:"/";
  margin:0 .5rem;
  color:rgba(33,28,24,.3);
}
.breadcrumb__link{border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease)}
.breadcrumb__link:hover{color:var(--c-apricot-deep);border-bottom-color:var(--c-poplar)}
.breadcrumb__current{color:var(--c-ink);font-weight:600}

/* ---------- 11. 卡片 ---------- */
.card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--hairline);
  border-radius:var(--radius-md);
  padding:clamp(1.25rem,2.4vw,2rem);
  box-shadow:var(--shadow-soft);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift)}
.card--paper{background:var(--c-paper);border-color:rgba(33,28,24,.12)}
.card--night{
  background:linear-gradient(160deg,#243B5A,#16213E 70%,#0B1026);
  border-color:rgba(255,246,233,.14);
  color:var(--c-glow);
}
.card--night .card__meta,.card--night .muted{color:rgba(255,246,233,.66)}
.card--lamp{
  background:radial-gradient(130% 110% at 0% 0%,#FFF6E9,#F6E3CB 56%,#EFE6D8);
  border-color:rgba(242,166,90,.5);
}
.card__title{margin-bottom:.5rem;font-size:clamp(1.1rem,1.6vw,1.4rem)}
.card__meta{font-size:.82rem;letter-spacing:.08em;color:var(--muted)}

/* ---------- 12. 标签与筛选 ---------- */
.tag,.chip{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.3rem .8rem;
  border-radius:var(--radius-pill);
  font-size:.8rem;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;
}
.tag{background:rgba(33,28,24,.06);color:var(--muted)}
.tag--apricot{background:rgba(242,166,90,.18);border-color:rgba(201,111,46,.35);color:#7A4415}
.tag--poplar{background:rgba(217,164,65,.2);border-color:rgba(217,164,65,.5);color:#6F5214}
.tag--night{background:var(--c-night-card);color:var(--c-glow)}
.tag--red{background:rgba(184,58,58,.14);border-color:rgba(184,58,58,.4);color:var(--c-pomegranate)}

.chip{
  cursor:pointer;
  background:rgba(255,246,233,.75);
  border-color:var(--hairline);
  color:var(--muted);
  transition:background-color .18s var(--ease),color .18s var(--ease),
             border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.chip:hover{border-color:var(--c-apricot-deep);color:var(--c-apricot-deep)}
.chip[aria-pressed="true"]{
  background:linear-gradient(135deg,var(--c-apricot),var(--c-apricot-deep));
  border-color:transparent;
  color:#2A1A0C;
  box-shadow:0 8px 20px -12px rgba(242,166,90,.95);
}
.filter-bar{display:flex;flex-wrap:wrap;gap:.5rem}
.is-hidden{display:none !important}

/* ---------- 13. 网格 ---------- */
.grid{display:grid;gap:clamp(1rem,2.5vw,2rem)}
.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))}
.grid--asym{grid-template-columns:minmax(0,1.45fr) minmax(0,1fr)}

/* ---------- 14. 图片容器 ---------- */
.figure{display:block;margin:0}
.figure__media{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-lg);
  background:linear-gradient(160deg,#243B5A,#0B1026);
  aspect-ratio:16/9;
  isolation:isolate;
}
.figure__media img,
.figure__media picture,
.figure__media video{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s var(--ease),filter .4s var(--ease);
}
.figure:hover .figure__media img{transform:scale(1.02)}
.figure__glow{
  position:absolute;left:-10%;right:-10%;bottom:-35%;height:70%;
  pointer-events:none;
  background:radial-gradient(50% 60% at 50% 100%,rgba(242,166,90,.5),transparent 70%);
  mix-blend-mode:screen;
}
.figure__caption{margin-top:.75rem;font-size:.85rem;color:var(--muted)}
.figure--wide .figure__media{aspect-ratio:21/9}
.figure--portrait .figure__media{aspect-ratio:4/5}
.figure--square .figure__media{aspect-ratio:1/1}
.figure--paper .figure__media{background:var(--c-paper)}

/* ---------- 15. 数据表 ---------- */
.table-wrap{
  overflow-x:auto;
  border-radius:var(--radius-md);
  border:1px solid var(--hairline);
  background:var(--surface);
}
.data-table{min-width:38rem;font-size:.95rem}
.data-table th,.data-table td{
  padding:.85rem 1rem;
  text-align:left;
  border-bottom:1px solid rgba(33,28,24,.08);
}
.data-table thead th{
  background:var(--c-night-card);
  color:var(--c-glow);
  font-weight:600;
  letter-spacing:.04em;
  border-bottom-color:rgba(255,246,233,.14);
}
.data-table tbody tr:hover{background:rgba(242,166,90,.12)}
.data-table tr.is-diff{background:rgba(217,164,65,.2)}
.data-table tr.is-diff td:first-child{box-shadow:inset 3px 0 0 var(--c-poplar)}

/* ---------- 16. 手风琴 ---------- */
.accordion{
  border:1px solid var(--hairline);
  border-radius:var(--radius-md);
  background:var(--surface);
  overflow:hidden;
}
.accordion__item + .accordion__item{border-top:1px solid rgba(33,28,24,.08)}
.accordion__trigger{
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
  width:100%;
  padding:1.05rem 1.25rem;
  text-align:left;
  font-size:1.02rem;font-weight:600;
  color:var(--text);
  transition:background-color .2s var(--ease);
}
.accordion__trigger:hover{background:rgba(242,166,90,.1)}
.accordion__trigger::after{
  content:"";
  flex:0 0 auto;
  width:.58rem;height:.58rem;
  border-right:2px solid var(--c-apricot-deep);
  border-bottom:2px solid var(--c-apricot-deep);
  transform:rotate(45deg);
  transition:transform .2s var(--ease);
}
.accordion__trigger[aria-expanded="true"]{background:rgba(242,166,90,.08)}
.accordion__trigger[aria-expanded="true"]::after{transform:rotate(-135deg)}
.accordion__panel{padding:0 1.25rem 1.35rem;color:var(--muted)}
.accordion__panel[hidden]{display:none}

/* ---------- 17. 档案抽屉 ---------- */
.drawer-region{position:relative}
.drawer{
  display:flex;
  gap:clamp(1rem,2vw,1.5rem);
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:.4rem .4rem 1.6rem;
  scrollbar-width:thin;
  scrollbar-color:rgba(201,111,46,.45) transparent;
}
.drawer::-webkit-scrollbar{height:8px}
.drawer::-webkit-scrollbar-thumb{
  background:rgba(201,111,46,.42);
  border-radius:99px;
}
.drawer:focus-visible{outline-offset:6px}
.drawer__item{
  flex:0 0 clamp(15rem,26vw,20rem);
  scroll-snap-align:start;
}
.drawer__item:hover .card{
  border-color:rgba(242,166,90,.6);
  box-shadow:0 0 34px -10px rgba(242,166,90,.55),var(--shadow-soft);
}
.drawer-nav{display:flex;gap:.55rem}
.drawer-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:2.6rem;height:2.6rem;
  border-radius:50%;
  border:1px solid var(--hairline);
  background:rgba(255,246,233,.72);
  color:var(--c-ink);
  font-size:1rem;
  transition:border-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.drawer-btn:hover{
  border-color:var(--c-apricot-deep);
  color:var(--c-apricot-deep);
  box-shadow:0 0 20px rgba(242,166,90,.4);
}
.drawer-btn[disabled]{opacity:.4;cursor:not-allowed}

/* ---------- 18. 时间轴 ---------- */
.timeline{
  position:relative;
  display:flex;flex-direction:column;
  gap:clamp(1.25rem,3vw,2.5rem);
  padding-left:1.9rem;
}
.timeline::before{
  content:"";
  position:absolute;left:.42rem;top:.5rem;bottom:.5rem;width:2px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--c-poplar),rgba(217,164,65,.15));
}
.timeline__item{position:relative}
.timeline__item::before{
  content:"";
  position:absolute;left:-1.9rem;top:.55rem;
  width:.9rem;height:.9rem;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,#FFF6E9,#F2A65A 60%,#C96F2E);
  box-shadow:0 0 14px rgba(242,166,90,.55);
  transition:box-shadow .2s var(--ease);
}
.timeline__item:hover::before{
  box-shadow:0 0 0 4px rgba(242,166,90,.22),0 0 22px rgba(242,166,90,.8);
}

/* ---------- 19. 显现 ---------- */
.has-js [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}
.has-js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 20. 响应式 ---------- */
@media (max-width:1080px){
  .footer-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:960px){
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;
    left:0;right:0;top:100%;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:1rem;
    margin-left:0;
    padding:1.1rem var(--gutter) 1.6rem;
    background:linear-gradient(180deg,#16213E,#0B1026);
    border-bottom:1px solid rgba(255,246,233,.14);
    box-shadow:0 30px 60px -30px rgba(0,0,0,.85);
    max-height:calc(100vh - 5rem);
    overflow-y:auto;
  }
  .site-nav[data-open]{display:flex}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:.2rem}
  .site-nav__link{
    padding:.7rem .85rem;
    font-size:1rem;
    border-radius:var(--radius-sm);
  }
  .site-nav__link::after{display:none}
  .site-nav__aside{
    flex-direction:column;
    align-items:stretch;
    gap:.9rem;
    padding-left:0;
    padding-top:1rem;
    border-left:0;
    border-top:1px solid rgba(255,246,233,.14);
  }
  .utility-nav{flex-wrap:wrap}
  .btn--lamp{justify-content:center}
  .site-footer__inner{grid-template-columns:minmax(0,1fr)}
  .grid--2,.grid--3,.grid--asym{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:620px){
  .brand__tag{display:none}
  .footer-cols{grid-template-columns:minmax(0,1fr);gap:1.75rem}
  .grid--4{grid-template-columns:minmax(0,1fr)}
  .site-footer__base{flex-direction:column;align-items:flex-start}
  .data-table{min-width:30rem;font-size:.9rem}
}

/* ---------- 21. 减弱动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .btn:hover,.card:hover{transform:none}
  .has-js [data-reveal]{opacity:1;transform:none}
  .scroll-progress__bar{transition:none}
}