/* 文章页样式 —— 由 tools/build-pages.py 从设计母版 tools/article-source.html 抽出。
   改样式请改这里，改完重新跑 tools/build-pages.py 即可。 */
:root{
  --brand-700:#5B5BFF;--brand-600:#7C3AED;--brand-500:#8B5CF6;
  --brand-300:#A78BFA;--brand-100:#EDE9FE;
  --accent-500:#22D3EE;--accent-400:#2DD4BF;
  --ink:#0F1024;--ink-700:#2A2B47;--ink-500:#5A5C75;--ink-400:#7A7C95;--ink-300:#A8A9BD;
  --line:#ECECF3;--line-2:#F3F3F8;
  --bg:#FFFFFF;--bg-soft:#F7F8FC;--bg-3:#FBFAFF;
  --r-sm:8px;--r-md:14px;--r-lg:16px;
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
ul,ol{margin:0;padding:0;list-style:none}
.container{max-width:1240px;margin:0 auto;padding:0 24px}

/* 阅读进度条 */
.progress{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--brand-700),var(--accent-500));z-index:200;transition:width .1s linear}

/* ===== 顶部导航 ===== */
.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--line)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h)}
.nav__brand{display:flex;align-items:center;gap:10px}
.nav__brand img{height:34px;width:auto;border-radius:6px}
.nav__brand-text b{font-size:15px;font-weight:700}
.nav__menu{display:flex;align-items:center;gap:36px}
.nav__menu a{font-size:14px;font-weight:500;color:var(--ink-700);transition:color .15s}
.nav__menu a.is-active{color:var(--brand-700);font-weight:700}
.nav__menu a:hover{color:var(--brand-700)}
.nav__cta{padding:10px 22px;border-radius:999px;background:linear-gradient(135deg,var(--brand-700),var(--brand-600));color:#fff !important;font-size:14px;font-weight:600;box-shadow:0 6px 18px rgba(91,91,255,.25);transition:transform .15s,box-shadow .15s}
.nav__cta:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(91,91,255,.35)}

/* ===== 返回条 ===== */
.atp-back-bar{padding:20px 0 0}
.atp-back{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--ink-500);border:1px solid var(--line);border-radius:999px;padding:8px 18px;background:#fff;transition:all .18s}
.atp-back:hover{border-color:var(--brand-700);color:var(--brand-700);background:var(--brand-100)}

/* ===== 详情页布局 ===== */
.atp-layout{display:grid;padding:22px 0 60px;grid-template-columns:minmax(0,1fr) 316px;gap:44px;align-items:start}
.atp-main{min-width:0}

.atp-head{padding-top:6px}
.atp-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:12.5px;color:var(--ink-300)}
.atp-cat{padding:5px 12px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);font-size:11.5px;font-weight:700}
.atp-dot{opacity:.45}
.atp-head h1{margin:16px 0 0;color:var(--ink);font-size:clamp(26px,3.4vw,38px);font-weight:800;letter-spacing:-.02em;line-height:1.3;text-wrap:balance}
.atp-lead{margin:18px 0 0;max-width:62ch;color:var(--ink-500);font-size:16px;line-height:1.85}

.atp-take{margin:28px 0 0;padding:18px 22px;border:1px solid var(--line);border-left:3px solid var(--brand-600);border-radius:11px;background:var(--bg-3)}
.atp-take h2{margin:0 0 10px;color:var(--brand-700);font-size:13px;font-weight:800;letter-spacing:.05em}
.atp-take ul{margin:0;padding:0 0 0 18px;list-style:disc}
.atp-take li{margin:6px 0;color:var(--ink-700);font-size:15px;line-height:1.8}
.atp-take li::marker{color:var(--brand-700)}

.atp-body{margin-top:38px;color:var(--ink-700);font-size:15.5px;line-height:2}
.atp-body h2{margin:48px 0 16px;color:var(--ink);font-size:23px;font-weight:800;letter-spacing:-.01em;line-height:1.42;scroll-margin-top:calc(var(--nav-h) + 26px);text-wrap:balance}
.atp-body h3{margin:30px 0 10px;color:var(--ink);font-size:17px;font-weight:700;scroll-margin-top:calc(var(--nav-h) + 26px)}
.atp-body p{margin:0 0 17px}
.atp-body strong{color:var(--ink);font-weight:700}
.atp-body blockquote{margin:0 0 20px;padding:6px 0 6px 20px;border-left:3px solid var(--brand-300);color:var(--ink-500);font-size:15px;line-height:1.9}
.atp-body h4{margin:24px 0 8px;color:var(--ink);font-size:15.5px;font-weight:700}
.atp-body ul,.atp-body ol{margin:0 0 18px;padding-left:1.4em}
.atp-body ul{list-style:disc}
.atp-body ol{list-style:decimal}
.atp-body li{margin:7px 0}
.atp-body li::marker{color:var(--brand-600);font-weight:700}
.atp-body ul ul,.atp-body ul ol,.atp-body ol ul,.atp-body ol ol{margin:6px 0 0}
.atp-body a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px}
.atp-body img{display:block;max-width:100%;height:auto;margin:0 0 10px;border-radius:10px;border:1px solid var(--line)}
.atp-body figure{margin:0 0 22px}
.atp-body figcaption{margin-top:2px;color:var(--ink-400);font-size:13px;line-height:1.7}
.atp-body hr{margin:34px 0;border:none;border-top:1px solid var(--line)}
.atp-body code{padding:2px 6px;border-radius:5px;background:var(--bg-soft);color:var(--brand-700);font-size:13.5px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.atp-body pre{margin:0 0 20px;padding:16px 18px;border-radius:10px;border:1px solid var(--line);background:var(--bg-soft);overflow-x:auto;font-size:13.5px;line-height:1.7}
.atp-body pre code{padding:0;background:none;color:var(--ink-700)}
/* 强调块：用于把关键结论从正文里拎出来 */
.atp-body .note{margin:0 0 22px;padding:16px 20px;border:1px solid var(--line);border-left:3px solid var(--brand-600);border-radius:11px;background:var(--bg-3)}
.atp-body .note p:last-child{margin-bottom:0}
.atp-body .note__t{display:block;margin-bottom:6px;color:var(--brand-700);font-size:13px;font-weight:800;letter-spacing:.05em}
.atp-body table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:14px}
.atp-body th,.atp-body td{padding:11px 14px;border:1px solid var(--line);text-align:left;line-height:1.65}
.atp-body th{background:var(--bg-soft);font-weight:700;color:var(--ink)}
.atp-body td{color:var(--ink-500)}

/* 正文底部：作者 + 分享 */
.atp-foot{margin-top:52px;padding-top:24px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.atp-author{display:flex;align-items:center;gap:12px}
.atp-author__av{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--brand-700),var(--brand-600));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;flex-shrink:0}
.atp-author__name{font-size:14px;font-weight:700;color:var(--ink)}
.atp-author__desc{font-size:12.5px;color:var(--ink-400);margin-top:2px}
.atp-foot__cta{font-size:13.5px;font-weight:700;color:var(--brand-700);display:inline-flex;align-items:center;gap:5px;transition:gap .18s}
.atp-foot__cta:hover{gap:9px}

/* ===== 侧栏 ===== */
.atp-side{position:sticky;top:calc(var(--nav-h) + 28px)}
.atp-panel{height:min(620px,calc(100vh - var(--nav-h) - 100px));display:grid;grid-template-rows:minmax(0,1fr) auto;overflow:hidden;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:0 6px 22px -16px rgba(48,36,70,.35)}
.atp-toc{min-height:0;overflow-y:auto;padding:18px 17px;background:#fff;counter-reset:toc}
.atp-toc h2{margin:0 0 10px;color:var(--ink-300);font-size:12.5px;font-weight:800;letter-spacing:.05em}
.atp-toc a{position:relative;display:flex;align-items:center;min-height:42px;padding:7px 8px 7px 24px;border-bottom:1px solid var(--line-2);border-radius:7px;color:#6F6976;font-size:12.5px;line-height:1.5;counter-increment:toc;transition:.16s}
.atp-toc a:last-of-type{border-bottom:0}
.atp-toc a::before{position:absolute;left:5px;color:#B9B9C4;font-size:11.5px;font-weight:800;font-variant-numeric:tabular-nums;content:counter(toc)}
.atp-toc a:hover{color:var(--brand-700);background:var(--brand-100)}
.atp-toc a.on{color:var(--brand-700);font-weight:700;background:var(--brand-100)}
.atp-toc a.on::before{color:var(--brand-700)}

.atp-cta{display:block;padding:20px;border-top:1px solid #30264F;background:linear-gradient(150deg,#1D172F 0%,#2E1E6B 60%,#3B216D 100%);color:#fff;transition:filter .2s}
.atp-cta:hover{filter:brightness(1.08)}
.atp-cta .k{display:block;margin-bottom:8px;color:#BDA8ED;font-size:9.5px;font-weight:800;letter-spacing:.8px}
.atp-cta .h{display:block;margin-bottom:8px;font-size:17px;font-weight:700;line-height:1.35}
.atp-cta .p{display:block;margin:0 0 14px;color:#C8C1D3;font-size:11.5px;line-height:1.65}
.atp-cta .b{display:flex;width:100%;min-height:46px;align-items:center;justify-content:center;gap:7px;border-radius:9px;background:#fff;color:#21193B;font-size:12.5px;font-weight:800;transition:background .18s,color .18s}
.atp-cta:hover .b{background:#F2EBFF;color:#5526BE}
.atp-cta .b i{font-style:normal;font-size:15px;transition:transform .18s}
.atp-cta:hover .b i{transform:translateX(3px)}

/* ===== 相关阅读 ===== */
.atp-rel{padding:0 0 72px}
.atp-rel h2{font-size:20px;font-weight:800;margin:0 0 18px;color:var(--ink);letter-spacing:-.3px}
.atp-rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.atp-rel-card{display:block;padding:18px 20px;border:1px solid var(--line);border-radius:12px;background:#fff;transition:all .18s}
.atp-rel-card:hover{border-color:rgba(91,91,255,.32);transform:translateY(-2px);box-shadow:0 10px 26px rgba(15,16,36,.06)}
.atp-rel-card span{display:block;font-size:11px;color:var(--ink-300);margin-bottom:7px;font-weight:600}
.atp-rel-card b{font-size:14.5px;font-weight:700;line-height:1.5;color:var(--ink);display:block;transition:color .15s}
.atp-rel-card:hover b{color:var(--brand-700)}

/* ===== 页脚 ===== */
.footer{padding:40px 0 24px;background:var(--bg-soft);border-top:1px solid var(--line);text-align:center;color:var(--ink-300);font-size:13px}
.footer__links a{color:var(--ink-400);margin:0 12px;transition:color .15s}
.footer__links a:hover{color:var(--brand-700)}
.footer__copy{margin-top:8px}

/* ===== 联系弹窗 ===== */
.geo-modal{position:fixed;inset:0;z-index:9999;display:none;align-items:center;justify-content:center;padding:24px}
.geo-modal.is-open{display:flex}
.geo-modal__backdrop{position:absolute;inset:0;background:rgba(15,16,36,.55);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.geo-modal__panel{position:relative;background:#fff;border-radius:20px;max-width:760px;width:100%;box-shadow:0 30px 80px rgba(15,16,36,.25);display:grid;grid-template-columns:1.2fr 1fr;overflow:hidden;animation:modalIn .25s ease}
@keyframes modalIn{from{opacity:0;transform:translateY(20px) scale(.96)}to{opacity:1;transform:none}}
.geo-modal__close{position:absolute;top:14px;right:16px;width:32px;height:32px;border-radius:50%;background:transparent;border:none;font-size:24px;color:#94a3b8;cursor:pointer;display:flex;align-items:center;justify-content:center;z-index:2;transition:background .15s,color .15s}
.geo-modal__close:hover{background:#f1f5f9;color:#475569}
.geo-modal__left{padding:44px 40px 36px;border-right:1px solid var(--line)}
.geo-modal__icon{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,#E0F2FE,#DBEAFE);color:var(--brand-700);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.geo-modal__icon svg{width:24px;height:24px}
.geo-modal__left h3{font-size:26px;font-weight:800;line-height:1.35;margin:0 0 14px;letter-spacing:-.5px;color:var(--ink)}
.geo-modal__hl{color:var(--brand-700);background:linear-gradient(120deg,var(--brand-700),var(--brand-500));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.geo-modal__pill{display:inline-block;padding:3px 10px;border-radius:6px;background:linear-gradient(135deg,var(--brand-700),var(--brand-500));color:#fff;font-size:12px;font-weight:700;letter-spacing:.5px;margin-bottom:18px}
.geo-modal__lead{font-size:14px;color:var(--ink-500);margin:0 0 14px}
.geo-modal__list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.geo-modal__list li{font-size:14px;color:var(--ink-700);display:flex;align-items:center;gap:10px}
.geo-modal__list i{width:18px;height:18px;border-radius:50%;background:linear-gradient(135deg,#DBEAFE,#E0E7FF);display:inline-flex;align-items:center;justify-content:center;position:relative;flex-shrink:0}
.geo-modal__list i::after{content:"";width:8px;height:4px;border-left:2px solid var(--brand-700);border-bottom:2px solid var(--brand-700);transform:rotate(-45deg) translate(1px,-1px)}
.geo-modal__right{background:linear-gradient(160deg,#F8FAFF,#EEF2FF);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:32px 28px}
.geo-modal__qr{width:170px;height:170px;border-radius:12px;background:#fff;padding:8px;box-shadow:0 4px 16px rgba(91,91,255,.12)}
.geo-modal__qr img{width:100%;height:100%;object-fit:contain;display:block}
.geo-modal__qr-lbl{margin-top:14px;font-size:13px;color:var(--ink-500);letter-spacing:.5px}

@media (max-width:960px){
  .nav__menu{display:none}
  .atp-layout{grid-template-columns:1fr;gap:32px;padding-bottom:40px}
  .atp-side{position:static}
  .atp-panel{height:auto;grid-template-rows:auto auto}
  .atp-toc{max-height:none;overflow:visible}
  .atp-rel-grid{grid-template-columns:repeat(2,1fr)}
  .geo-modal__panel{grid-template-columns:1fr;max-width:420px}
  .geo-modal__left{border-right:none;border-bottom:1px solid var(--line);padding:32px 24px 24px}
  .geo-modal__right{padding:24px}
  .geo-modal__qr{width:140px;height:140px}
}
@media (max-width:600px){
  .atp-rel-grid{grid-template-columns:1fr}
  .atp-body{font-size:15px;line-height:1.95}
  .atp-body h2{font-size:20px;margin-top:38px}
  .atp-head h1{font-size:24px}
  .atp-foot{flex-direction:column;align-items:flex-start}
}