/* 木雁山人 · 星轨云海主题
   配色取自知乎头像与主页封面：深墨蓝夜空 / 雾白 / 暖金星轨 / 朱砂印章
   零外部字体、零框架，纯 CSS。 */
:root{
  --bg:#08121e; --bg2:#0c1a2a; --panel:#122439; --panel2:#172c45;
  --line:rgba(201,169,107,.22); --line2:rgba(190,210,230,.10);
  --gold:#c9a96b; --gold-lt:#e6cd96; --gold-dim:#8b754c;
  --text:#eaf1f5; --text2:#c6d4de; --muted:#8ea3b6; --seal:#a8402f;
  --serif:"Songti SC","STSong","Noto Serif CJK SC","Source Han Serif SC","SimSun",serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;background-color:var(--bg);
  background-image:
    radial-gradient(ellipse 90% 46% at 50% -8%,rgba(46,84,120,.34),transparent 72%),
    radial-gradient(ellipse 60% 40% at 92% 12%,rgba(201,169,107,.055),transparent 70%),
    radial-gradient(circle at 14% 12%,rgba(230,205,150,.55) 0 1px,transparent 1.6px),
    radial-gradient(circle at 78% 20%,rgba(230,205,150,.38) 0 1px,transparent 1.6px),
    radial-gradient(circle at 34% 30%,rgba(230,205,150,.28) 0 1px,transparent 1.6px),
    radial-gradient(circle at 62% 8%,rgba(230,205,150,.3) 0 1px,transparent 1.6px);
  background-attachment:fixed}
a{color:var(--gold-lt);text-decoration:none;transition:color .2s}
a:hover{color:var(--gold);text-decoration:underline}
img{max-width:100%;height:auto}
::selection{background:rgba(201,169,107,.32);color:#fff}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--gold);outline-offset:3px}
.wrap{max-width:1180px;margin:0 auto;padding:0 28px}
.narrow{max-width:780px;margin:0 auto;padding:0 28px}

/* ---------------------------------------------------------- 顶部 */
.skip{position:fixed;left:14px;top:-60px;z-index:60;padding:9px 16px;
  background:linear-gradient(135deg,#d4b478,#b28f56);color:#0a1420;
  border-radius:2px;font-size:13px;letter-spacing:.1em;transition:top .2s}
.skip:focus{top:14px;color:#0a1420;text-decoration:none}
.read-progress{position:absolute;left:0;bottom:-1px;height:2px;width:0;z-index:2;
  pointer-events:none;background:linear-gradient(90deg,var(--gold),var(--gold-lt));
  box-shadow:0 0 10px rgba(201,169,107,.5);transition:width .08s linear}
.topbar{position:sticky;top:0;z-index:30;background:rgba(7,16,27,.9);
  border-bottom:1px solid var(--line);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}
.topbar::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);opacity:.7}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;min-height:76px;gap:20px}
.brand{display:flex;align-items:center;gap:14px;color:var(--text)}
.brand:hover{text-decoration:none;color:var(--text)}
.brand-avatar{width:46px;height:46px;border-radius:50%;padding:2px;flex:none;
  border:1px solid rgba(201,169,107,.65);box-shadow:0 0 0 4px rgba(201,169,107,.06)}
.brand-avatar img{width:100%;height:100%;border-radius:50%;object-fit:cover;display:block}
.brand b{display:block;font-family:var(--serif);font-size:21px;letter-spacing:.32em;
  font-weight:600;line-height:1.3}
.brand small{display:block;font-size:10px;color:var(--gold);letter-spacing:.28em;margin-top:2px}
nav.main{display:flex;align-items:center;gap:26px;flex-wrap:wrap}
nav.main a{position:relative;font-size:13.5px;color:var(--text2);letter-spacing:.1em;padding:8px 0}
nav.main a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:1px;
  background:var(--gold);transition:right .25s}
nav.main a:hover,nav.main a.on{color:var(--gold-lt);text-decoration:none}
nav.main a:hover::after,nav.main a.on::after{right:0}
.nav-toggle{display:none;background:transparent;border:1px solid var(--line);color:var(--gold-lt);
  border-radius:2px;padding:7px 12px;font-size:13px;cursor:pointer;letter-spacing:.1em}

/* ---------------------------------------------------------- 首屏 */
.hero-banner{position:relative;display:block;width:100%;overflow:hidden;
  border-bottom:1px solid var(--line);background:#0a1726}
.hero-banner img{display:block;width:100%;height:auto}
.hero-banner::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:radial-gradient(ellipse 125% 95% at 50% 42%,transparent 58%,rgba(5,12,20,.48) 100%)}
.hero-banner::after{content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(8,18,30,.04) 0%,transparent 58%,rgba(8,18,30,.6) 100%)}
.hero-intro{position:relative;padding:64px 0 74px;
  background:linear-gradient(180deg,#0b1c2d 0%,var(--bg) 100%)}
.hero-intro::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:min(1180px,92%);height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,169,107,.55),transparent)}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:56px;align-items:center}
.eyebrow{font-size:11px;letter-spacing:.42em;color:var(--gold);margin:0 0 22px;
  text-transform:uppercase}
.eyebrow::before{content:"";display:inline-block;width:26px;height:1px;
  background:var(--gold);vertical-align:middle;margin-right:12px;opacity:.85}
.hero-intro h1{font-family:var(--serif);font-size:52px;line-height:1.32;letter-spacing:.1em;
  font-weight:600;margin:0 0 24px;color:var(--text)}
.hero-intro h1 em{font-style:normal;
  background:linear-gradient(115deg,#f2dda6 8%,#d4b478 48%,#a8864d 96%);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero-intro .lead{font-size:18px;color:var(--text);line-height:2;margin:0 0 16px}
.hero-intro .sub{font-size:13.5px;color:var(--muted);line-height:2;margin:0 0 34px;max-width:600px}
.btns{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 26px;border-radius:2px;font-size:13px;
  letter-spacing:.14em;border:1px solid var(--gold);
  transition:transform .22s,box-shadow .22s,background .22s,color .22s;cursor:pointer}
.btn.primary{background:linear-gradient(135deg,#d9ba7e,#b28f56);color:#0a1420;
  border-color:transparent;font-weight:600;
  box-shadow:0 6px 18px rgba(201,169,107,.16),inset 0 1px 0 rgba(255,255,255,.28)}
.btn.primary:hover{background:linear-gradient(135deg,#ecd39b,#c9a96b);
  color:#0a1420;text-decoration:none;transform:translateY(-2px);
  box-shadow:0 12px 30px rgba(201,169,107,.3)}
.btn.ghost{color:var(--gold-lt);background:rgba(201,169,107,.04)}
.btn.ghost:hover{background:rgba(201,169,107,.13);text-decoration:none;
  transform:translateY(-2px);border-color:var(--gold-lt)}
.hero-art{position:relative;display:flex;align-items:center;justify-content:center;min-height:300px}
.hero-art svg{width:100%;max-width:380px;height:auto;opacity:.95;
  animation:spin 72s linear infinite;transform-origin:50% 50%}
@keyframes spin{to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){.hero-art svg{animation:none}}
.hero-art .vseal{position:absolute;right:2%;top:4%;writing-mode:vertical-rl;
  font-family:var(--serif);font-size:14px;letter-spacing:.5em;color:var(--gold);
  border-left:1px solid var(--line);padding-left:12px}
.hero-art .vseal i{display:block;width:16px;height:16px;margin:14px auto 0;
  background:var(--seal);border-radius:2px;opacity:.85}
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,rgba(17,36,57,.92),rgba(8,18,30,.92))}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);padding-top:28px;padding-bottom:28px}
.stat{position:relative;text-align:center;border-right:1px solid var(--line2)}
.stat:last-child{border-right:0}
.stat::after{content:"";display:block;width:26px;height:2px;margin:9px auto 0;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);opacity:.85}
.stat b{display:block;font-family:var(--serif);font-size:34px;color:var(--gold-lt);
  line-height:1.35;letter-spacing:.04em;font-variant-numeric:tabular-nums}
.stat span{font-size:11px;color:var(--muted);letter-spacing:.22em}

/* ---------------------------------------------------------- 通用区块 */
section.block{position:relative;padding:66px 0}
section.block + section.block::before{content:"";position:absolute;left:50%;
  transform:translateX(-50%);top:0;width:min(1180px,92%);height:1px;
  background:linear-gradient(90deg,transparent,var(--line),transparent)}
section.block + section.block::after{content:"";position:absolute;left:50%;top:-3.5px;
  width:7px;height:7px;transform:translateX(-50%) rotate(45deg);
  background:var(--bg);border:1px solid rgba(201,169,107,.65)}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:30px}
.sec-head h1,.sec-head h2{font-family:var(--serif);font-size:28px;letter-spacing:.12em;
  margin:0;font-weight:600;color:var(--text)}
.sec-head h1::before,.sec-head h2::before{content:"";display:inline-block;width:5px;height:21px;
  background:linear-gradient(180deg,var(--gold-lt),var(--gold-dim));
  margin-right:14px;vertical-align:middle;border-radius:1px}
.sec-head .more{font-size:12.5px;color:var(--gold);letter-spacing:.1em;white-space:nowrap}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{position:relative;display:flex;flex-direction:column;overflow:hidden;
  background:linear-gradient(158deg,rgba(23,44,69,.9),rgba(11,25,41,.95));
  border:1px solid var(--line2);border-radius:2px;padding:28px;transition:.3s}
.card::before{content:"";position:absolute;left:0;top:0;width:100%;height:2px;
  background:linear-gradient(90deg,var(--gold),transparent 62%);opacity:.6;transition:opacity .3s}
.card:hover{transform:translateY(-5px);border-color:rgba(201,169,107,.55);
  box-shadow:0 22px 48px rgba(0,0,0,.42),0 0 0 1px rgba(201,169,107,.14);text-decoration:none}
.card:hover::before{opacity:1}
.card h3{font-family:var(--serif);font-size:19.5px;line-height:1.62;margin:0 0 12px;font-weight:600}
.card h3 a{color:var(--text)}
.card h3 a:hover{color:var(--gold-lt);text-decoration:none}
.card p{font-size:13.5px;color:#adc0cf;line-height:1.95;margin:0 0 18px;flex:1}
.meta{font-size:12px;color:var(--muted);display:flex;gap:14px;flex-wrap:wrap;align-items:center;letter-spacing:.04em}
.tag{display:inline-block;font-size:11px;color:var(--gold);letter-spacing:.08em;
  background:rgba(201,169,107,.06);border:1px solid rgba(201,169,107,.3);
  border-radius:2px;padding:3px 10px;margin:0 6px 6px 0}
.tag:hover{background:rgba(201,169,107,.16);color:var(--gold-lt);text-decoration:none}
.list{border:1px solid var(--line2);background:rgba(13,29,47,.62);border-radius:2px}
.row{position:relative;display:flex;align-items:flex-start;gap:20px;padding:20px 26px;
  border-bottom:1px solid var(--line2);transition:background .2s}
.row:last-child{border-bottom:0}
.row::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:var(--gold);opacity:0;transition:opacity .25s}
.row:hover{background:rgba(201,169,107,.045)}
.row:hover::before{opacity:1}
.row .idx{font-family:var(--serif);color:var(--gold-dim);font-size:19px;min-width:32px;
  padding-top:2px;letter-spacing:.05em;transition:color .25s}
.row:hover .idx{color:var(--gold-lt)}
.row .body{flex:1;min-width:0}
.row h3{font-family:var(--serif);font-size:17.5px;line-height:1.6;margin:0 0 8px;font-weight:600}
.row h3 a{color:var(--text)}
.row h3 a:hover{color:var(--gold-lt);text-decoration:none}
.row p{font-size:13px;color:#a7bac9;margin:0 0 10px;line-height:1.85;
  overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.notice{background:rgba(201,169,107,.055);border:1px solid rgba(201,169,107,.2);
  border-left:2px solid var(--gold);padding:18px 22px;font-size:13.5px;
  color:var(--text2);line-height:1.95;border-radius:2px}
.sec-note{font-size:13.5px;color:var(--muted);margin:-12px 0 22px;line-height:1.9}
.card .meta{padding-top:13px;border-top:1px solid var(--line2)}
.card .pin-quote{font-family:var(--serif);font-size:15.5px;line-height:2;
  color:var(--text2);margin:0 0 18px;flex:1}
.pin-text{font-size:15px;color:var(--text2);line-height:1.9;
  white-space:pre-line;margin:0 0 10px}
.tags-line{margin-top:12px}
.tags-line:empty{display:none}

/* ---------------------------------------------------------- 正文页 */
.crumb{font-size:12.5px;color:var(--muted);padding:26px 0 0;letter-spacing:.06em}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--gold-lt)}
.article-head{padding:22px 0 30px;border-bottom:1px solid var(--line);margin-bottom:34px}
.article-head h1{font-family:var(--serif);font-size:34px;line-height:1.5;letter-spacing:.05em;
  margin:0 0 18px;font-weight:600;color:var(--text)}
.article-head .meta{font-size:12.5px}
.prose{font-size:17px;line-height:2.1;color:var(--text2)}
.prose p{margin:0 0 22px}
.prose h2{font-family:var(--serif);font-size:22px;color:var(--text);margin:38px 0 18px;
  padding-left:17px;border-left:2px solid var(--gold);line-height:1.65;letter-spacing:.05em}
.prose h3,.prose h4{font-size:18px;color:var(--text);margin:28px 0 14px}
.prose blockquote{position:relative;margin:0 0 24px;padding:18px 22px 18px 48px;
  background:rgba(201,169,107,.07);
  border-left:2px solid var(--gold);color:var(--gold-lt);font-size:16px}
.prose blockquote::before{content:"\201C";position:absolute;left:10px;top:2px;
  font-family:var(--serif);font-size:46px;line-height:1;color:rgba(201,169,107,.4)}
.prose ul,.prose ol{padding-left:26px;margin:0 0 24px}
.prose li{margin:0 0 9px}
.prose img{border-radius:2px;display:block;margin:0 auto 10px;background:#0f2032;
  border:1px solid var(--line2)}
.prose figure{margin:0 0 24px;text-align:center}
.prose figcaption{font-size:13px;color:var(--muted)}
.prose a{color:var(--gold-lt);text-decoration:underline;text-underline-offset:3px}
.prose hr{border:0;border-top:1px solid var(--line2);margin:34px 0}
.prose b,.prose strong{color:var(--text)}
.prose h2[id]{scroll-margin-top:96px}
.toc{margin:0 0 30px;padding:18px 22px;border:1px solid var(--line);
  border-left:2px solid var(--gold);border-radius:2px;
  background:rgba(201,169,107,.05)}
.toc summary{cursor:pointer;list-style:none;font-family:var(--serif);
  font-size:16px;letter-spacing:.1em;color:var(--gold-lt)}
.toc summary::-webkit-details-marker{display:none}
.toc summary::before{content:"▸ ";color:var(--gold);font-size:13px}
.toc[open] summary::before{content:"▾ "}
.toc ol{margin:14px 0 0;padding-left:22px;columns:2;column-gap:30px}
.toc li{margin:0 0 8px;font-size:14px;line-height:1.75;break-inside:avoid}
.toc a{color:var(--text2)}
.toc a:hover{color:var(--gold-lt)}
.article-foot{margin-top:48px;padding-top:28px;border-top:1px solid var(--line);
  font-size:14px;color:var(--muted)}
.article-foot .btn{margin-top:14px}
.related{margin-top:40px}
.related h2{font-family:var(--serif);font-size:21px;letter-spacing:.1em;margin:0 0 18px;color:var(--text)}
.related ul{list-style:none;padding:0;margin:0}
.related li{padding:11px 0;border-bottom:1px dashed var(--line2);font-size:14.5px}
.pager{display:flex;justify-content:center;gap:8px;padding:38px 0;flex-wrap:wrap}
.pager a,.pager span{padding:8px 14px;border:1px solid var(--line2);
  background:rgba(18,36,57,.7);border-radius:2px;font-size:13px;color:var(--text2)}
.pager a:hover{border-color:var(--gold);color:var(--gold-lt);text-decoration:none}
.pager .cur{background:linear-gradient(135deg,#c9a96b,#a8864d);color:#0a1420;border-color:transparent}

/* ---------------------------------------------------------- FAQ / 表格 */
.faq-item{border-bottom:1px solid var(--line2);padding:22px 0}
.faq-item h3{font-family:var(--serif);font-size:18px;margin:0 0 12px;color:var(--gold-lt);
  letter-spacing:.05em}
.faq-item p{margin:0;font-size:15px;color:var(--text2);line-height:2}
.lineage{width:100%;border-collapse:collapse;background:rgba(13,29,47,.7);
  border:1px solid var(--line2)}
.lineage th,.lineage td{padding:14px 18px;text-align:left;
  border-bottom:1px solid var(--line2);font-size:14.5px}
.lineage th{background:rgba(201,169,107,.09);color:var(--gold-lt);font-weight:600;letter-spacing:.08em}
.lineage td{color:var(--text2)}
.lineage tr:last-child td{border-bottom:0}

/* ---------------------------------------------------------- 关于页形象 */
.about-figure{position:relative;border:1px solid var(--line);overflow:hidden;border-radius:2px}
.about-figure img{display:block;width:100%;transition:transform .6s ease}
.about-figure:hover img{transform:scale(1.03)}
.about-figure figcaption{position:absolute;left:0;right:0;bottom:0;padding:14px 18px;
  font-family:var(--serif);font-size:13px;letter-spacing:.18em;color:var(--gold-lt);
  background:linear-gradient(0deg,rgba(6,14,24,.92),transparent)}
.about-grid{display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:start}

/* ---------------------------------------------------------- 搜索 */
.searchbox{display:flex;gap:10px;margin:24px 0 28px}
.searchbox input{flex:1;padding:13px 17px;border:1px solid var(--line2);border-radius:2px;
  background:rgba(13,29,47,.8);font-size:15px;font-family:inherit;color:var(--text)}
.searchbox input::placeholder{color:var(--muted)}
.searchbox input:focus{outline:none;border-color:var(--gold)}
.searchbox button{padding:0 26px;border:1px solid transparent;
  background:linear-gradient(135deg,#c9a96b,#a8864d);color:#0a1420;
  border-radius:2px;font-size:13px;letter-spacing:.14em;cursor:pointer}
#search-status{font-size:13px;color:var(--muted);margin-bottom:18px}

/* ---------------------------------------------------------- 页脚 */
footer{position:relative;border-top:1px solid var(--line);background:#060e18;
  margin-top:24px;padding:56px 0 28px}
footer::before{content:"";position:absolute;left:0;right:0;top:-1px;height:2px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);opacity:.6}
footer .cols{display:grid;grid-template-columns:1.9fr 1fr 1fr 1fr;gap:36px}
footer h4{font-family:var(--serif);font-size:16px;margin:0 0 16px;
  letter-spacing:.16em;color:var(--gold-lt)}
footer p,footer li{font-size:13px;color:var(--muted);line-height:2.1;margin:0}
footer ul{list-style:none;padding:0;margin:0}
footer a{color:var(--muted)}
footer a:hover{color:var(--gold-lt)}
.foot-brand{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.foot-brand img{width:44px;height:44px;border-radius:50%;object-fit:cover;
  border:1px solid rgba(201,169,107,.6)}
.foot-brand b{font-family:var(--serif);font-size:18px;letter-spacing:.3em;color:var(--text)}
.copyright{border-top:1px solid var(--line2);margin-top:34px;padding-top:20px;
  font-size:12px;color:var(--muted);display:flex;justify-content:space-between;
  gap:14px;flex-wrap:wrap;letter-spacing:.04em}
.totop{position:fixed;right:24px;bottom:24px;width:40px;height:40px;border-radius:50%;
  background:rgba(18,36,57,.94);border:1px solid var(--line);color:var(--gold-lt);
  font-size:16px;display:none;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:0 8px 24px rgba(0,0,0,.4)}

/* ---------------------------------------------------------- 微信联系方式 */
.wx-id{color:var(--gold-lt);font-weight:600;letter-spacing:.06em;
  font-family:ui-monospace,SFMono-Regular,Consolas,"Courier New",monospace}
.qr-frame{display:inline-block;padding:9px;background:#fff;border-radius:2px;
  border:1px solid var(--gold);line-height:0;
  box-shadow:0 8px 28px rgba(0,0,0,.42),0 0 0 5px rgba(201,169,107,.08)}
.qr-frame img{display:block;width:220px;height:220px;image-rendering:pixelated}
.qr-frame.small{padding:6px}
.qr-frame.small img{width:104px;height:104px}
.foot-contact .qr-frame{margin-bottom:12px}
.foot-contact .qr-frame.small img{width:92px;height:92px}
.foot-contact p{line-height:1.9}
.foot-contact .wx-id{font-size:12px;word-break:break-all}
.contact-wrap{padding-top:8px}
.contact-card{display:grid;grid-template-columns:250px 1fr;gap:44px;align-items:center;
  position:relative;overflow:hidden;padding:40px 44px;border:1px solid var(--line);border-radius:2px;
  background:linear-gradient(135deg,rgba(18,36,57,.94),rgba(9,20,33,.94))}
.contact-card::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 6% 50%,rgba(201,169,107,.11),transparent 52%)}
.contact-card::after{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:linear-gradient(180deg,transparent,var(--gold),transparent);opacity:.75}
.contact-qr{text-align:center;position:relative}
.qr-caption{display:block;margin-top:13px;font-size:11.5px;letter-spacing:.18em;color:var(--muted)}
.contact-info{position:relative}
.contact-info .eyebrow{margin:0 0 10px}
.contact-info h2{font-family:var(--serif);font-size:28px;letter-spacing:.08em;
  margin:0 0 16px;color:var(--text)}
.contact-info p{color:var(--text2);font-size:15px;line-height:2;margin:0 0 14px}
.contact-info .contact-note{font-size:12.5px;color:var(--muted);line-height:1.95;
  border-left:2px solid var(--line);padding-left:14px;margin:18px 0 22px}
.contact-info .btns{gap:12px;flex-wrap:wrap}
.copy-wx{border:0;cursor:pointer;font-family:var(--sans)}
.copy-wx.done{background:linear-gradient(135deg,#8bbd9a,#5f9a78)}
.top-contact{position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  background:
    radial-gradient(ellipse 42% 130% at 7% 50%,rgba(201,169,107,.12),transparent 62%),
    linear-gradient(120deg,#0e2135,#08121e)}
.top-contact::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,169,107,.7),transparent);opacity:.8}
.top-contact .wrap{display:flex;align-items:center;gap:26px;flex-wrap:wrap;
  padding-top:18px;padding-bottom:18px}
.top-contact .qr-frame.small{padding:5px;border-color:var(--gold);
  box-shadow:0 6px 22px rgba(0,0,0,.45),0 0 0 4px rgba(201,169,107,.1)}
.top-contact .qr-frame.small img{width:96px;height:96px}
.top-contact-txt{flex:1;min-width:220px}
.top-contact .eyebrow{margin:0 0 6px;font-size:10px;letter-spacing:.32em}
.top-contact-line{margin:0 0 4px;font-family:var(--serif);font-size:19px;
  letter-spacing:.05em;color:var(--text)}
.top-contact-hint{margin:0;font-size:12px;color:var(--muted);line-height:1.8}
.top-contact .btns{gap:10px}
.top-contact .btn{padding:9px 16px;font-size:12px;letter-spacing:.08em}

/* ---------------------------------------------------------- 动效 */
.js .reveal{opacity:0;transform:translateY(18px);
  transition:opacity .72s cubic-bezier(.2,.7,.3,1),transform .72s cubic-bezier(.2,.7,.3,1)}
.js .reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.js .reveal{opacity:1;transform:none;transition:none}}

/* ---------------------------------------------------------- 响应式 */
@media(max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:24px}
  .hero-art{display:none}
  .hero-intro{padding:52px 0 58px}
  .hero-intro h1{font-size:38px}
  .grid{grid-template-columns:repeat(2,1fr)}
  footer .cols{grid-template-columns:1fr 1fr}
  .about-grid{grid-template-columns:1fr}
  .about-figure{max-width:420px}
  .contact-card{grid-template-columns:220px 1fr;gap:28px;padding:30px}
  .contact-card .qr-frame img{width:190px;height:190px}
}
@media(max-width:640px){
  .wrap,.narrow{padding:0 18px}
  .topbar .wrap{min-height:auto;padding-top:12px;padding-bottom:12px;flex-wrap:wrap}
  .nav-toggle{display:block}
  .brand-avatar{width:40px;height:40px}
  .brand b{font-size:18px}
  nav.main{display:none;width:100%;gap:16px;padding-bottom:8px}
  nav.main.open{display:flex}
  .hero-intro h1{font-size:30px;letter-spacing:.04em;line-height:1.4}
  .eyebrow{font-size:10px;letter-spacing:.2em;line-height:2}
  .eyebrow::before{width:18px;margin-right:8px}
  .hero-intro .lead{font-size:15.5px}
  .hero-intro .sub{font-size:13px}
  .btn{padding:11px 20px;font-size:12.5px}
  .stats .wrap{grid-template-columns:repeat(2,1fr);gap:18px 0}
  .stat:nth-child(2){border-right:0}
  .stat b{font-size:26px}
  section.block{padding:40px 0}
  .sec-head h1,.sec-head h2{font-size:22px}
  .grid{grid-template-columns:1fr}
  .row{padding:16px 18px;gap:12px}
  .article-head h1{font-size:25px}
  .prose{font-size:16px}
  .card{padding:22px}
  footer .cols{grid-template-columns:1fr}
  .lineage th,.lineage td{padding:11px 12px;font-size:13px}
  .contact-card{grid-template-columns:1fr;gap:24px;padding:26px 20px;text-align:center}
  .contact-card .qr-frame img{width:190px;height:190px}
  .contact-info .btns{justify-content:center}
  .contact-info .contact-note{text-align:left}
  .contact-info h2{font-size:23px}
  .top-contact .wrap{flex-direction:column;text-align:center;gap:12px;padding:16px 18px}
  .top-contact-txt{min-width:0}
  .top-contact .btns{justify-content:center;gap:8px}
  .top-contact-line{font-size:16px}
  .top-contact-line .wx-id{display:block;margin-top:2px;word-break:break-all}
  .top-contact .eyebrow{display:none}
  .top-contact .qr-frame.small img{width:88px;height:88px}
  .top-contact .btn{padding:9px 14px}
  .top-contact-hint{display:none}
  .toc ol{columns:1}
  .card .pin-quote{font-size:15px}
}