/* =========================================================
   麟哥GEO博客 · 生成式搜索优化智库
   风格：深黑 + 香槟金（取自《刘哲麟简介》PPT 主色 #161618 / #D2A860）
   作者：设计稿演示用，全站零外部依赖（无 CDN / 无外链字体）
   ========================================================= */

/* ---------- 变量 ---------- */
:root{
  --bg:#0A0A0C;
  --bg-2:#0E0E11;
  --panel:#131316;
  --panel-2:#17171B;
  --line:rgba(255,255,255,.08);
  --line-gold:rgba(210,168,96,.22);
  --gold:#D2A860;
  --gold-2:#E8C88A;
  --gold-3:#A8813F;
  --txt:#F3F0EA;
  --txt-2:#A6A199;
  --txt-3:#6E6961;
  --wrap:1240px;
  --r:14px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 基础 ---------- */
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%;}
body{
  background:var(--bg);
  color:var(--txt-2);
  font:15px/1.85 "PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
ul,ol{list-style:none;}
img{max-width:100%;border:0;display:block;}
h1,h2,h3,h4{color:var(--txt);font-weight:600;line-height:1.25;}
::selection{background:rgba(210,168,96,.28);color:#fff;}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px;}
.gold-text{
  background:linear-gradient(120deg,#F4E3BE 0%,var(--gold) 45%,var(--gold-3) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 28px;border-radius:999px;
  font-size:14px;font-weight:600;letter-spacing:.4px;white-space:nowrap;
  border:1px solid transparent;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),background .35s var(--ease),color .35s var(--ease),border-color .35s var(--ease);
}
.btn-sm{height:38px;padding:0 20px;font-size:13px;}
.btn-gold{
  color:#1A1508;
  background:linear-gradient(120deg,#F0D9A8 0%,var(--gold) 55%,#BC8F48 100%);
  box-shadow:0 10px 26px rgba(210,168,96,.22);
}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(210,168,96,.34);}
.btn-line{color:var(--txt);border-color:rgba(255,255,255,.18);background:rgba(255,255,255,.02);}
.btn-line:hover{border-color:var(--gold);color:var(--gold-2);background:rgba(210,168,96,.06);transform:translateY(-2px);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;left:0;top:0;right:0;z-index:100;
  border-bottom:1px solid transparent;
  transition:background .4s var(--ease),border-color .4s var(--ease),backdrop-filter .4s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(10,10,12,.82);
  border-bottom-color:var(--line);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.header-inner{display:flex;align-items:center;gap:26px;height:76px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;
  font:700 17px/1 Georgia,"Times New Roman",serif;color:#1A1508;
  background:linear-gradient(135deg,#F1DCAF,var(--gold) 55%,#B98C45);
  box-shadow:0 6px 18px rgba(210,168,96,.28);
}
.logo-text{font-size:18px;font-weight:600;color:var(--txt);letter-spacing:.5px;}
.logo-text em{font-style:normal;color:var(--gold);margin-left:2px;letter-spacing:1px;}

.nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav a{
  position:relative;display:block;padding:9px 12px;font-size:13.5px;color:var(--txt-2);
  border-radius:8px;transition:color .3s var(--ease),background .3s var(--ease);white-space:nowrap;
}
.nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:1px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);
  transform:scaleX(0);transform-origin:center;transition:transform .35s var(--ease);
}
.nav a:hover{color:var(--txt);}
.nav a:hover::after{transform:scaleX(1);}
.header-cta{flex-shrink:0;margin-left:8px;}
.nav-toggle{
  display:none;width:42px;height:42px;margin-left:auto;border:1px solid var(--line);
  border-radius:10px;background:rgba(255,255,255,.03);cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{width:18px;height:1.5px;background:var(--txt);display:block;transition:.3s var(--ease);}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
body.nav-open .nav-toggle span:nth-child(2){opacity:0;}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}
.nav-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;visibility:hidden;transition:.35s;z-index:98;}
body.nav-open .nav-mask{opacity:1;visibility:visible;}

/* ---------- 首屏 ---------- */
.hero{position:relative;padding:150px 0 0;overflow:hidden;}
.hero-glow{
  position:absolute;left:50%;top:-320px;width:1200px;height:1200px;margin-left:-600px;
  background:radial-gradient(circle,rgba(210,168,96,.16) 0%,rgba(210,168,96,.05) 38%,transparent 68%);
  pointer-events:none;
}
.hero-grid{
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:74px 74px;
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 20%,#000 0%,transparent 78%);
  mask-image:radial-gradient(ellipse 80% 60% at 50% 20%,#000 0%,transparent 78%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.06fr .94fr;gap:40px;align-items:end;
}
.hero-copy{padding-bottom:52px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;letter-spacing:2.4px;text-transform:uppercase;color:var(--gold-2);
}
.eyebrow i{width:26px;height:1px;background:linear-gradient(90deg,var(--gold),transparent);display:block;}
.hero-title{
  margin:18px 0 10px;
  font-size:clamp(46px,7vw,84px);line-height:1;letter-spacing:-1px;font-weight:700;
}
.hero-title .gold-text{letter-spacing:-2px;}
.hero-slogan{
  font-size:clamp(17px,2.1vw,23px);color:var(--txt);letter-spacing:3px;font-weight:500;
}
.hero-desc{max-width:540px;margin:22px 0 0;font-size:15.5px;line-height:1.95;color:var(--txt-2);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-note{margin-top:26px;font-size:12.5px;letter-spacing:3px;color:var(--txt-3);text-transform:uppercase;}

.hero-figure{position:relative;display:flex;justify-content:center;align-items:flex-end;min-height:440px;}
.portrait{position:relative;width:100%;max-width:368px;display:flex;justify-content:center;}
.portrait img{position:relative;z-index:3;width:100%;height:auto;filter:drop-shadow(0 28px 48px rgba(0,0,0,.6));}
.portrait::before{
  content:"";position:absolute;left:50%;top:46%;width:560px;height:560px;margin:-280px 0 0 -280px;
  background:radial-gradient(circle,rgba(210,168,96,.22) 0%,rgba(210,168,96,.06) 42%,transparent 66%);
  z-index:1;pointer-events:none;
}
.portrait::after{
  content:"";position:absolute;left:50%;top:46%;width:392px;height:392px;margin:-196px 0 0 -196px;
  border:1px solid rgba(210,168,96,.28);border-radius:50%;z-index:1;pointer-events:none;
}
.ring{
  position:absolute;left:50%;top:46%;border-radius:50%;z-index:2;pointer-events:none;
  border:1px dashed rgba(210,168,96,.34);
}
.ring-a{width:462px;height:462px;margin:-231px 0 0 -231px;animation:spin 46s linear infinite;}
.ring-b{width:330px;height:330px;margin:-165px 0 0 -165px;border-style:solid;border-color:rgba(210,168,96,.14);}
@keyframes spin{to{transform:rotate(360deg);}}
.portrait-tag{
  position:absolute;z-index:4;right:-6px;bottom:26px;
  padding:12px 16px;border-radius:12px;
  background:rgba(18,18,21,.86);border:1px solid var(--line-gold);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  box-shadow:0 18px 40px rgba(0,0,0,.5);
}
.portrait-tag strong{display:block;font-size:14px;color:var(--txt);font-weight:600;}
.portrait-tag em{display:block;font-style:normal;font-size:11.5px;color:var(--gold-2);letter-spacing:.6px;margin-top:3px;}
.tag-head{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.tag-view{font-size:12px;color:var(--gold-2);white-space:nowrap;transition:color .3s var(--ease);}
.tag-view:hover{color:var(--gold);text-decoration:underline;}

/* ---------- AI 品牌环绕轨道（公转 + 反向保持水平） ---------- */
.ai-orbit{position:absolute;left:50%;top:46%;width:0;height:0;z-index:2;pointer-events:none;animation:ai-spin 40s linear infinite;}
.ai-slot{position:absolute;left:0;top:0;transform:rotate(var(--a)) translate(232px);}
.ai-cell{
  position:absolute;left:0;top:0;width:80px;height:38px;margin:-19px 0 0 -40px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(245,245,247,.94);border:1px solid rgba(210,168,96,.35);border-radius:10px;
  box-shadow:0 6px 18px rgba(0,0,0,.45);
  transform:rotate(calc(var(--a) * -1));
  animation:ai-spin-rev 40s linear infinite;
}
.ai-cell img{max-width:72px;max-height:30px;object-fit:contain;display:block;}
@keyframes ai-spin{to{transform:rotate(360deg);}}
@keyframes ai-spin-rev{to{transform:rotate(calc(var(--a) * -1 - 360deg));}}
@media only screen and (max-width:900px){ .ai-orbit{display:none;} }

.hero-stats{
  position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);
  margin-top:34px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stat{padding:26px 10px 26px 0;text-align:left;border-left:1px solid var(--line);padding-left:26px;}
.stat:first-child{border-left:0;padding-left:0;}
.stat strong{
  display:block;font:600 34px/1.1 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  color:var(--gold-2);letter-spacing:-1px;
}
.stat strong i{font-style:normal;font-size:20px;color:var(--gold);margin-left:1px;}
.stat span{display:block;margin-top:8px;font-size:13px;color:var(--txt-3);letter-spacing:.6px;}

/* ---------- 定位说明 ---------- */
.positioning{padding:96px 0 10px;}
.positioning-inner{display:grid;grid-template-columns:.9fr 1.4fr;gap:56px;align-items:start;}
.pos-quote{
  font-size:clamp(22px,2.6vw,30px);line-height:1.5;color:var(--txt);font-weight:600;letter-spacing:.5px;
  padding-left:22px;border-left:2px solid var(--gold);
}
.pos-quote em{display:block;margin-top:12px;font-style:normal;font-size:13px;letter-spacing:2.6px;color:var(--gold-2);font-weight:500;}
.pos-points{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.pos-point h4{font-size:15px;letter-spacing:1px;margin-bottom:8px;}
.pos-point h4::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--gold);margin-right:9px;vertical-align:2px;}
.pos-point p{font-size:13.5px;line-height:1.9;color:var(--txt-2);}

/* ---------- 版块标题 ---------- */
.sec-head{max-width:720px;margin-bottom:44px;}
.sec-head h2{margin:14px 0 12px;font-size:clamp(26px,3.2vw,38px);letter-spacing:-.5px;}
.sec-desc{font-size:14.5px;color:var(--txt-2);}

/* ---------- 核心频道 ---------- */
.channels{padding:92px 0 96px;}
.ch-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.ch-card{
  position:relative;overflow:hidden;
  padding:28px 26px 24px;border-radius:var(--r);
  background:linear-gradient(180deg,var(--panel) 0%,var(--bg-2) 100%);
  border:1px solid var(--line);
  transition:transform .45s var(--ease),border-color .45s var(--ease),box-shadow .45s var(--ease);
}
/* 顶部强调线 */
.ch-card::before{
  content:"";position:absolute;left:0;top:0;height:2px;width:100%;
  background:linear-gradient(90deg,transparent,rgba(var(--ac-rgb),.9),transparent);
  transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease);
}
/* 栏目调性纹理 */
.ch-card::after{
  content:"";position:absolute;right:-40px;top:-40px;width:200px;height:200px;
  pointer-events:none;opacity:.5;transition:opacity .5s var(--ease);
  -webkit-mask-image:radial-gradient(circle at 72% 28%,#000 0%,transparent 70%);
  mask-image:radial-gradient(circle at 72% 28%,#000 0%,transparent 70%);
}
.m-grid::after{background-image:linear-gradient(rgba(var(--ac-rgb),.4) 1px,transparent 1px),linear-gradient(90deg,rgba(var(--ac-rgb),.4) 1px,transparent 1px);background-size:20px 20px;}
.m-flow::after{background-image:repeating-linear-gradient(135deg,rgba(var(--ac-rgb),.42) 0 1.5px,transparent 1.5px 13px);}
.m-chart::after{background-image:repeating-linear-gradient(90deg,rgba(var(--ac-rgb),.42) 0 7px,transparent 7px 17px);}
.m-code::after{background-image:radial-gradient(rgba(var(--ac-rgb),.55) 1.2px,transparent 1.3px);background-size:13px 13px;}
.m-hatch::after{background-image:repeating-linear-gradient(45deg,rgba(var(--ac-rgb),.36) 0 1px,transparent 1px 9px);}
.m-lines::after{background-image:repeating-linear-gradient(0deg,rgba(var(--ac-rgb),.36) 0 1.5px,transparent 1.5px 15px);}

.ch-card:hover{
  transform:translateY(-6px);
  border-color:rgba(var(--ac-rgb),.5);
  box-shadow:0 22px 48px rgba(0,0,0,.5),0 0 0 1px rgba(var(--ac-rgb),.12) inset;
}
.ch-card:hover::before{transform:scaleX(1);}
.ch-card:hover::after{opacity:.85;}

.ch-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.ch-no{font:500 12px/1 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;letter-spacing:2px;color:rgba(255,255,255,.2);}
.ch-ico{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  color:var(--ac);background:rgba(var(--ac-rgb),.1);border:1px solid rgba(var(--ac-rgb),.26);
  transition:transform .45s var(--ease),background .45s var(--ease);
}
.ch-ico svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.ch-card:hover .ch-ico{transform:translateY(-2px) rotate(-4deg);background:rgba(var(--ac-rgb),.16);}
.ch-card h3{font-size:19px;letter-spacing:.3px;}
.ch-slogan{margin-top:7px;font-size:13px;color:var(--ac);letter-spacing:.6px;}
.ch-desc{margin-top:14px;font-size:13.5px;line-height:1.9;color:var(--txt-2);}
.ch-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:18px;}
.ch-tags span{
  font-size:11.5px;line-height:1;padding:7px 10px;border-radius:6px;color:var(--txt-2);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
}
.ch-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:20px;
  font-size:13px;color:var(--txt-3);transition:color .35s var(--ease),gap .35s var(--ease);
}
.ch-link i{font-style:normal;transition:transform .35s var(--ease);}
.ch-card:hover .ch-link{color:var(--ac);gap:12px;}

/* ---------- 精选内容 ---------- */
.posts{padding:0 0 96px;}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.post{border-top:1px solid var(--line);transition:border-color .4s var(--ease);}
.post:hover{border-top-color:var(--gold);}
.post-link{display:block;padding:26px 0 0;}
.post-tag{font-size:11.5px;letter-spacing:1.4px;color:var(--gold-2);}
.post h3{margin:12px 0 10px;font-size:17.5px;line-height:1.6;transition:color .35s var(--ease);}
.post:hover h3{color:var(--gold-2);}
.post p{font-size:13.5px;line-height:1.9;color:var(--txt-2);}
.post-meta{display:flex;align-items:center;gap:10px;margin-top:16px;font-size:12px;color:var(--txt-3);}
.post-meta i{width:14px;height:1px;background:var(--txt-3);display:block;font-style:normal;}

/* ---------- 附属频道 ---------- */
.sub-channels{padding:0 0 100px;}
.sub-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.sub-item{
  display:flex;align-items:center;gap:18px;padding:22px 24px;border-radius:12px;
  background:rgba(255,255,255,.02);border:1px solid var(--line);
  transition:background .4s var(--ease),border-color .4s var(--ease),transform .4s var(--ease);
}
.sub-item:hover{background:rgba(210,168,96,.05);border-color:var(--line-gold);transform:translateY(-3px);}
.sub-ico{
  width:40px;height:40px;flex-shrink:0;border-radius:10px;display:flex;align-items:center;justify-content:center;
  color:var(--gold);background:rgba(210,168,96,.08);border:1px solid var(--line-gold);
}
.sub-ico svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.sub-item h4{font-size:15.5px;letter-spacing:.4px;}
.sub-item p{margin-top:5px;font-size:13px;color:var(--txt-2);line-height:1.7;}
.sub-arrow{margin-left:auto;font-style:normal;color:var(--txt-3);transition:transform .35s var(--ease),color .35s var(--ease);}
.sub-item:hover .sub-arrow{transform:translateX(5px);color:var(--gold-2);}

/* ---------- 页脚 ---------- */
.site-footer{background:#08080A;border-top:1px solid var(--line);padding:64px 0 0;}
.footer-top{display:grid;grid-template-columns:1.4fr .7fr .7fr .8fr;gap:48px;padding-bottom:52px;}
.f-brand .logo{margin-bottom:18px;}
.f-brand p{font-size:13.5px;line-height:1.95;color:var(--txt-2);max-width:440px;}
.f-brand p + p{margin-top:10px;}
.f-col h4{font-size:13px;letter-spacing:2px;color:var(--txt-3);text-transform:uppercase;margin-bottom:16px;}
.f-col ul li{margin-bottom:11px;}
.f-col ul li a{font-size:13.5px;color:var(--txt-2);transition:color .3s var(--ease),padding-left .3s var(--ease);}
.f-col ul li a:hover{color:var(--gold-2);padding-left:5px;}

/* ---------- 页脚·联系方式 ---------- */
.f-contact h4{font-size:13px;letter-spacing:2px;color:var(--txt-3);text-transform:uppercase;margin-bottom:16px;}
.f-wx{font-size:13.5px;color:var(--txt-2);line-height:1.9;margin-bottom:14px;word-break:break-all;}
.f-qr{
  width:118px;height:118px;border-radius:10px;background:#fff;
  display:flex;align-items:center;justify-content:center;overflow:hidden;
  box-shadow:0 0 0 1px rgba(255,255,255,.14) inset;
}
.f-qr img{width:100%;height:100%;object-fit:contain;display:block;}
.f-qr-empty{font-size:12px;color:#8a8a8f;text-align:center;line-height:1.6;padding:0 8px;}
.f-qr-tip{font-size:12px;color:var(--txt-3);margin-top:9px;letter-spacing:.4px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 24px;border-top:1px solid var(--line);
}
.footer-bottom p{font-size:12px;color:var(--txt-3);letter-spacing:.4px;}
.footer-links a{font-size:12px;color:var(--txt-3);letter-spacing:.4px;transition:color .3s var(--ease);}
.footer-links a:hover{color:var(--gold-2);}

/* ---------- 页脚·GEO分站城市列表 ---------- */
.footer-city{padding:26px 0 8px;}
.f-city-title{display:flex;align-items:center;gap:9px;font-size:13px;font-weight:700;letter-spacing:2px;color:var(--txt);text-transform:uppercase;margin-bottom:14px;}
.f-city-title::before{content:"";display:block;width:4px;height:13px;border-radius:2px;background:linear-gradient(180deg,var(--gold-2),var(--gold-3));flex:none;}
.f-city-list{display:flex;flex-wrap:wrap;gap:7px 20px;}
.f-city-list a{font-size:13px;color:var(--txt-2);line-height:1.7;white-space:nowrap;transition:color .3s var(--ease);}
.f-city-list a:hover{color:var(--gold-2);}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:26px;bottom:26px;z-index:90;
  width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:#1A1508;font-size:16px;
  background:linear-gradient(135deg,#F1DCAF,var(--gold) 60%,#B98C45);
  box-shadow:0 12px 28px rgba(210,168,96,.3);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .35s var(--ease),transform .35s var(--ease),visibility .35s;
}
.to-top.is-show{opacity:1;visibility:visible;transform:none;}

/* ---------- 滚动显现 ---------- */
html.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease);}
html.js .reveal.in{opacity:1;transform:none;}

/* =========================================================
   响应式
   ========================================================= */
@media only screen and (max-width:1180px){
  .ch-grid{gap:18px;}
  .ch-card{padding:24px 22px 22px;}
}

@media only screen and (max-width:1024px){
  /* 导航抽屉 */
  .nav-toggle{display:flex;}
  .header-cta{display:none;}
  .nav{
    position:fixed;right:0;top:0;height:100%;width:min(320px,84vw);z-index:99;
    margin:0;padding:96px 26px 40px;flex-direction:column;align-items:stretch;gap:4px;
    background:#0C0C0F;border-left:1px solid var(--line);
    overflow-y:auto;
    transform:translateX(102%);transition:transform .4s var(--ease);
  }
  body.nav-open .nav{transform:none;}
  /* 抽屉是 header 的子元素，必须把 logo 和关闭按钮提到它上面，否则盖住点不到 */
  body.nav-open .site-header{background:#0C0C0F;border-bottom-color:var(--line);}
  body.nav-open .logo,
  body.nav-open .nav-toggle{position:relative;z-index:101;}
  .nav a{padding:14px 12px;font-size:15px;border-bottom:1px solid var(--line);border-radius:0;}
  .nav a::after{display:none;}

  .hero{padding-top:120px;}
  .hero-inner{grid-template-columns:1fr;gap:10px;}
  .hero-copy{padding-bottom:24px;}
  .hero-figure{order:2;min-height:0;margin-top:10px;}
  .portrait{max-width:300px;}
  .portrait::before{width:420px;height:420px;margin:-210px 0 0 -210px;}
  .portrait::after{width:300px;height:300px;margin:-150px 0 0 -150px;}
  .ring-a{width:352px;height:352px;margin:-176px 0 0 -176px;}
  .ring-b{width:250px;height:250px;margin:-125px 0 0 -125px;}

  .positioning{padding:72px 0 10px;}
  .positioning-inner{grid-template-columns:1fr;gap:34px;}
  .pos-points{gap:22px;}

  .channels{padding:70px 0 74px;}
  .ch-grid{grid-template-columns:repeat(2,1fr);}
  .posts{padding-bottom:74px;}
  .post-grid{grid-template-columns:repeat(2,1fr);gap:22px;}
  .sub-channels{padding-bottom:80px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:34px;}
  .f-brand{grid-column:1 / -1;}
}

@media only screen and (max-width:768px){
  html{scroll-padding-top:80px;}
  .header-inner{height:66px;}
  .hero{padding-top:104px;}
  .hero-title{font-size:clamp(42px,12vw,64px);}
  .hero-slogan{letter-spacing:1.5px;}
  .hero-desc{font-size:14.5px;}
  .hero-actions{gap:10px;margin-top:26px;}
  .btn{height:44px;padding:0 22px;font-size:13.5px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .stat{padding:20px 0 20px 18px;}
  .stat:nth-child(odd){border-left:0;padding-left:0;}
  .stat:nth-child(n+3){border-top:1px solid var(--line);}
  .stat strong{font-size:27px;}

  .pos-quote{font-size:21px;padding-left:16px;}
  .pos-points{grid-template-columns:1fr;gap:18px;}

  .sec-head{margin-bottom:30px;}
  .ch-grid{grid-template-columns:1fr;gap:14px;}
  .ch-card{padding:22px 20px;}
  .ch-desc{font-size:13px;}
  .post-grid{grid-template-columns:1fr;gap:0;}
  .post{padding-bottom:24px;}
  .sub-grid{grid-template-columns:1fr;gap:12px;}
  .sub-item{padding:18px 18px;gap:14px;}

  .site-footer{padding-top:48px;}
  .footer-top{grid-template-columns:1fr;gap:30px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;padding:18px 24px;}
  .to-top{right:16px;bottom:16px;width:40px;height:40px;}
}

@media only screen and (max-width:480px){
  .wrap{padding:0 18px;}
  .hero-note{font-size:11.5px;letter-spacing:2px;}
  .portrait-tag{right:0;bottom:10px;padding:10px 12px;}
  .portrait-tag strong{font-size:13px;}
  .portrait-tag em{font-size:10.5px;}
  .ch-tags span{font-size:11px;padding:6px 8px;}
  .footer-bottom p{font-size:11.5px;}
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .ring-a{animation:none;}
  html.js .reveal{opacity:1;transform:none;transition:none;}
  .ch-card,.btn,.sub-item,.to-top{transition:none;}
}


/* =========================================================
   内页通用样式（列表 / 详情 / 单页 / 搜索 / 标签）
   作者：麟哥GEO 模板，与首页共用变量与风格
   ========================================================= */
.page-head{
  position:relative;padding:128px 0 46px;overflow:hidden;
  background:linear-gradient(180deg,rgba(210,168,96,.05) 0%,transparent 70%);
  border-bottom:1px solid var(--line);
}
.page-head::before{
  content:"";position:absolute;left:50%;top:-220px;width:820px;height:820px;margin-left:-410px;
  background:radial-gradient(circle,rgba(210,168,96,.10) 0%,transparent 68%);
  pointer-events:none;
}
.page-head-sm{padding:112px 0 36px;}
.page-head-inner{position:relative;z-index:1;}
.page-head h1{margin:14px 0 12px;font-size:clamp(28px,4vw,40px);letter-spacing:-.5px;}
.crumb{font-size:13px;color:var(--txt-3);}
.crumb a{color:var(--txt-2);transition:color .3s;}
.crumb a:hover{color:var(--gold-2);}
.crumb b{color:var(--txt-3);font-weight:400;margin:0 6px;}

.list-sec{padding:56px 0 96px;}
.list-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.list-item{
  padding:26px 26px;border-radius:var(--r);
  background:linear-gradient(180deg,var(--panel) 0%,var(--bg-2) 100%);
  border:1px solid var(--line);
  transition:transform .45s var(--ease),border-color .45s var(--ease);
}
.list-item:hover{transform:translateY(-4px);border-color:var(--line-gold);}
.list-item h3{font-size:17px;line-height:1.55;transition:color .35s;}
.list-item h3 a:hover{color:var(--gold-2);}
.list-desc{margin-top:12px;font-size:13.5px;line-height:1.85;color:var(--txt-2);}
.list-meta{display:flex;flex-wrap:wrap;gap:14px;margin-top:18px;font-size:12px;color:var(--txt-3);}
.list-meta span{letter-spacing:.4px;}
.list-meta span:first-child{color:var(--gold-2);}

.pagebar{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:48px;}
.pagebar .btn{height:38px;padding:0 16px;font-size:13px;}
.page-cur{font:500 13px/1 ui-monospace,Menlo,Consolas,monospace;color:var(--txt-2);letter-spacing:1px;}
.empty{padding:70px 0;text-align:center;color:var(--txt-3);font-size:14px;border:1px dashed var(--line);border-radius:var(--r);}

.article-sec{padding:56px 0 96px;}
.article-wrap{max-width:880px;}
.article{
  padding:34px 38px;border-radius:var(--r);
  background:linear-gradient(180deg,var(--panel) 0%,var(--bg-2) 100%);
  border:1px solid var(--line);
}
.article-meta{display:flex;flex-wrap:wrap;gap:18px;padding-bottom:20px;margin-bottom:24px;
  border-bottom:1px solid var(--line);font-size:12.5px;color:var(--txt-3);}
.article-meta span{letter-spacing:.4px;}
.article-body{font-size:15.5px;line-height:2;color:var(--txt-2);word-break:break-word;}
.article-body h2,.article-body h3,.article-body h4{margin:28px 0 12px;color:var(--txt);}
.article-body h2{font-size:22px;padding-left:14px;border-left:3px solid var(--gold);}
.article-body h3{font-size:18px;}
.article-body p{margin:14px 0;}
.article-body img{border-radius:10px;margin:18px auto;border:1px solid var(--line);}
.article-body a{color:var(--gold-2);border-bottom:1px solid rgba(210,168,96,.3);}
.article-body ul,.article-body ol{margin:14px 0;padding-left:22px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:8px 0;}
.article-body blockquote{margin:18px 0;padding:14px 20px;border-left:3px solid var(--gold);
  background:rgba(210,168,96,.05);color:var(--txt);border-radius:0 8px 8px 0;}
.article-body table{width:100%;border-collapse:collapse;margin:18px 0;}
.article-body table td,.article-body table th{padding:10px 14px;border:1px solid var(--line);font-size:14px;}
.article-body table th{color:var(--txt);background:rgba(255,255,255,.03);}
.article-body code{background:rgba(255,255,255,.06);padding:2px 7px;border-radius:5px;font-size:13.5px;color:var(--gold-2);}
.article-nav{margin-top:30px;padding-top:22px;border-top:1px solid var(--line);}
.article-nav p{margin:10px 0;font-size:14px;color:var(--txt-2);}
.article-nav p a{color:var(--txt-2);transition:color .3s;}
.article-nav p a:hover{color:var(--gold-2);}

.related{margin-top:26px;padding:26px 30px;border-radius:var(--r);
  background:rgba(255,255,255,.02);border:1px solid var(--line);}
.related h3{font-size:15px;letter-spacing:1px;color:var(--txt-3);margin-bottom:16px;}
.related ul li{display:flex;justify-content:space-between;gap:16px;padding:10px 0;border-bottom:1px solid var(--line);}
.related ul li:last-child{border-bottom:0;}
.related ul li a{font-size:14px;color:var(--txt-2);transition:color .3s;}
.related ul li a:hover{color:var(--gold-2);}
.related ul li span{font-size:12px;color:var(--txt-3);white-space:nowrap;}

/* ---------- 资源附件下载 ---------- */
.download-box{
  margin:26px 0 8px;padding:22px 24px;border:1px solid var(--line-gold);border-radius:var(--r);
  background:linear-gradient(135deg,var(--panel) 0%,var(--panel-2) 100%);
}
.download-title{font-size:16px;font-weight:600;color:var(--txt);margin-bottom:8px;}
.download-tip{font-size:13px;color:var(--txt-3);margin-bottom:16px;}
.download-box .btn{height:44px;padding:0 26px;}

@media only screen and (max-width:768px){
  .page-head{padding:104px 0 34px;}
  .page-head-sm{padding:96px 0 28px;}
  .list-grid{grid-template-columns:1fr;}
  .list-item{padding:22px 20px;}
  .article{padding:24px 20px;}
  .article-wrap{max-width:none;}
  .related{padding:22px 20px;}
}

/* =========================================================
   人企服务案库（滚动图片墙）+ 荣誉证书网格
   作者：麟哥GEO 模板追加
   ========================================================= */
.case-show{padding:0 0 96px;}
.case-marquee{position:relative;overflow:hidden;padding:8px 0;}
.case-marquee::before,.case-marquee::after{content:"";position:absolute;top:0;bottom:0;width:56px;z-index:2;pointer-events:none;}
.case-marquee::before{left:0;background:linear-gradient(90deg,var(--bg),transparent);}
.case-marquee::after{right:0;background:linear-gradient(-90deg,var(--bg),transparent);}
.case-track{display:flex;width:450%;animation:caseScroll 46s linear infinite;}
.case-show:hover .case-track{animation-play-state:paused;}
.case-cell{flex:0 0 auto;width:calc(100%/18);padding:0 12px;box-sizing:border-box;}
.case-cell img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:14px;
  border:1px solid var(--line);transition:border-color .4s var(--ease),transform .4s var(--ease);}
.case-cell:hover img{border-color:var(--line-gold);transform:translateY(-4px);}
@keyframes caseScroll{to{transform:translateX(-50%);}}

/* 荣誉证书网格 */
.cert-head{margin:34px 0 18px;padding-top:28px;border-top:1px solid var(--line);}
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:8px;}
.cert{
  position:relative;margin:0;border-radius:12px;overflow:hidden;
  background:linear-gradient(180deg,var(--panel) 0%,var(--bg-2) 100%);
  border:1px solid var(--line);
  transition:transform .45s var(--ease),border-color .45s var(--ease),box-shadow .45s var(--ease);
}
.cert:hover{transform:translateY(-5px);border-color:var(--line-gold);
  box-shadow:0 20px 44px rgba(0,0,0,.5),0 0 0 1px rgba(210,168,96,.14) inset;}
.cert img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block;}
.cert figcaption{
  padding:11px 12px 13px;font-size:12.5px;color:var(--txt-2);text-align:center;letter-spacing:.6px;
  border-top:1px solid var(--line);background:rgba(255,255,255,.02);
}
.cert:hover figcaption{color:var(--gold-2);}

@media only screen and (max-width:1024px){
  .cert-grid{grid-template-columns:repeat(3,1fr);gap:14px;}
  /* 案库 cell 已用百分比自适应一行4个 */
}
@media only screen and (max-width:768px){
  .case-show{padding-bottom:74px;}
  .case-track{width:900%;animation:caseScroll 40s linear infinite;}
  .case-cell{padding:0 6px;}
  .cert-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
}
/* 案库详情页大图 */
.case-detail{margin:24px auto 28px;text-align:center;}
.case-detail img{max-width:860px;width:100%;border-radius:16px;
  border:1px solid var(--line);box-shadow:0 24px 60px rgba(0,0,0,.5);
  transition:border-color .4s var(--ease),transform .4s var(--ease);}
.case-detail img:hover{border-color:var(--line-gold);transform:translateY(-2px);}

/* ---------- 图片灯箱放大预览 ---------- */
.cert img,
.article-body img{cursor:zoom-in;}
.lb-overlay{position:fixed;inset:0;z-index:1000;display:flex;align-items:center;justify-content:center;padding:5vh 4vw;
  background:rgba(6,6,8,.92);opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;}
.lb-overlay.is-open{opacity:1;visibility:visible;}
.lb-figure{margin:0;max-width:100%;text-align:center;}
.lb-img{display:block;max-width:100%;max-height:82vh;object-fit:contain;border-radius:10px;box-shadow:0 24px 70px rgba(0,0,0,.65);}
.lb-cap{margin-top:14px;color:var(--txt-2);font-size:13px;letter-spacing:.4px;}
.lb-close{position:absolute;top:18px;right:22px;width:42px;height:42px;border:1px solid var(--line);border-radius:50%;
  background:rgba(255,255,255,.06);color:var(--txt);font-size:24px;line-height:1;cursor:pointer;transition:border-color .3s,color .3s;}
.lb-close:hover{border-color:var(--gold);color:var(--gold-2);}
@media only screen and (max-width:768px){
  .lb-overlay{padding:4vh 3vw;}
  .lb-close{top:12px;right:12px;}
}