:root{
  --orange:#f26b1d; --orange-deep:#d8510f; --orange-soft:#fff1e5;
  --green:#1e8e5a; --green-deep:#136b42; --green-soft:#e6f4ec;
  --ink:#141414; --ink-2:#3a3a3a; --gray:#6f6f6f; --line:#e7e2dc;
  --bg:#fbfaf8; --card:#ffffff;
  --maxw:1140px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.8;font-size:16px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{padding:72px 0;position:relative}
.sec-eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:700;letter-spacing:.18em;color:var(--orange);text-transform:uppercase}
.sec-eyebrow::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--orange),var(--green))}
.chapter-title{font-size:34px;font-weight:800;line-height:1.3;margin:8px 0 10px}
.chapter-sub{color:var(--gray);max-width:720px;font-size:16px}
h2.sec-title{font-size:28px;font-weight:900;line-height:1.4;letter-spacing:-.5px}
h2.sec-title .hl{background:linear-gradient(90deg,var(--orange),var(--green));-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:900}
.btn{display:inline-block;padding:13px 26px;border-radius:10px;font-weight:700;font-size:15px;transition:.22s;border:2px solid transparent;position:relative;overflow:hidden}
.btn-orange{background:var(--orange);color:#fff}.btn-orange:hover{background:var(--orange-deep);transform:translateY(-2px);box-shadow:0 8px 22px rgba(242,107,29,.3)}
.btn-ghost{border-color:var(--ink);color:var(--ink)}.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-green{background:var(--green);color:#fff}.btn-green:hover{background:var(--green-deep)}
.btn-light{border-color:#fff;color:#fff}.btn-light:hover{background:#fff;color:var(--ink)}

/* topbar */
.topbar{position:sticky;top:0;z-index:50;background:rgba(251,250,248,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:9px;font-weight:900;font-size:19px;letter-spacing:-.3px}
.brand-mark{width:24px;height:24px;border-radius:7px;background:linear-gradient(135deg,var(--orange),var(--green));display:inline-block;box-shadow:0 3px 8px rgba(30,142,90,.3)}
.brand em{font-style:normal;color:var(--green)}
.nav-links{display:flex;align-items:center;gap:30px;font-size:15px;font-weight:600}
.nav-links a.on{color:var(--orange);position:relative}
.nav-links a.on::after{content:"";position:absolute;left:0;right:0;bottom:-7px;height:2px;background:linear-gradient(90deg,var(--orange),var(--green))}
.nav-links a:hover{color:var(--orange)}
.cta-btn{background:var(--ink);color:#fff;padding:9px 18px;border-radius:8px}.cta-btn:hover{background:var(--green)!important;color:#fff!important}
.nav-burger{display:none;flex-direction:column;justify-content:center;gap:5px;width:32px;height:32px;cursor:pointer;position:relative;z-index:51}
.nav-burger span{display:block;width:26px;height:3px;background:var(--ink);border-radius:2px;transition:transform .25s,opacity .25s;transform-origin:center}

/* ============ HERO : 因果引擎 ============ */
.hero{padding:0;position:relative;overflow:hidden;
  background:
    radial-gradient(circle at 82% 20%, rgba(30,142,90,.10), transparent 42%),
    radial-gradient(circle at 8% 85%, rgba(242,107,29,.10), transparent 40%),
    linear-gradient(180deg,#fff 0%, var(--orange-soft) 55%, var(--bg) 100%);
}
.hero::before{content:"";position:absolute;top:-160px;right:-160px;width:520px;height:520px;border:1px solid rgba(242,107,29,.15);border-radius:50%}
.hero::after{content:"";position:absolute;top:-110px;right:-110px;width:380px;height:380px;border:1px solid rgba(30,142,90,.18);border-radius:50%}
.hero .inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;min-height:76vh;padding:72px 0}
.hero h1{font-size:46px;line-height:1.18;font-weight:900;letter-spacing:-1px}
.hero h1 .hl{background:linear-gradient(90deg,var(--orange),var(--green));-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:900}
.hero p.lead{margin:22px 0 32px;font-size:17.5px;color:var(--ink-2);max-width:540px}
.cta-row{display:flex;gap:14px;flex-wrap:wrap}

/* 因果引擎图形 */
.engine{position:relative;height:440px}
.engine .eng-slice{position:absolute;width:300px;height:300px;border-radius:60px;transform:rotate(45deg)}
.engine .e-o{top:16px;left:16px;background:linear-gradient(140deg,rgba(242,107,29,.85),rgba(242,107,29,.55));box-shadow:0 26px 60px -18px rgba(242,107,29,.55)}
.engine .e-g{bottom:12px;right:6px;background:linear-gradient(140deg,rgba(30,142,90,.85),rgba(30,142,90,.5));box-shadow:0 26px 60px -18px rgba(30,142,90,.5)}
.engine .e-dot{position:absolute;border-radius:50%}
.engine .d1{width:70px;height:70px;background:var(--ink);top:60px;right:70px}
.engine .d2{width:34px;height:34px;background:var(--orange);bottom:96px;left:64px}
.engine .d3{width:18px;height:18px;background:var(--green);top:210px;right:150px}
.engine .eng-core{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:var(--ink);color:#fff;padding:30px 40px;border-radius:20px;text-align:center;z-index:3;box-shadow:0 30px 70px -20px rgba(20,20,20,.6)}
.engine .eng-core::before{content:"";position:absolute;inset:-12px;border:1px dashed rgba(20,20,20,.35);border-radius:26px}
.engine .eng-core b{font-size:34px;letter-spacing:.1em;background:linear-gradient(90deg,var(--orange),var(--green));-webkit-background-clip:text;background-clip:text;color:transparent}
.engine .eng-core span{font-size:13px;color:#d8d8d8;letter-spacing:.24em;display:block;margin-top:6px}
/* 因果流向横条 */
.flow{position:absolute;bottom:-2px;left:0;right:0;display:flex;font-size:13px;font-weight:800;letter-spacing:.14em;color:#fff}
.flow div{flex:1;text-align:center;padding:13px 0}
.flow .fl-d{background:var(--orange)}
.flow .fl-l{background:var(--ink);color:var(--orange)}
.flow .fl-r{background:var(--green)}

/* ============ 证据墙 / stats ============ */
.evidence{background:var(--ink);color:#fff;padding:84px 0 96px;overflow:hidden;position:relative}
.evidence::before{content:"";position:absolute;inset:0;opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:46px 46px}
.evidence .sec-eyebrow{color:var(--green)}
.evidence .sec-title{color:#fff;position:relative}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:44px;position:relative}
.stat{position:relative;padding:26px 28px}
.stat::before{content:"";position:absolute;top:18px;bottom:18px;left:0;width:1px;background:linear-gradient(180deg,transparent,rgba(242,107,29,.5),transparent)}
.stat:first-child::before{display:none}
.stat b{font-size:42px;font-weight:900;display:block;line-height:1;
  background:linear-gradient(120deg,var(--orange),var(--green));
  -webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:-1px}
.stat span{display:block;color:#c9c9c9;font-size:13.5px;margin-top:12px;line-height:1.6}

/* ============ 方法因果谱 ============ */
.map{padding:84px 0}
.chain{position:relative;margin-top:40px}
/* 竖直主线 */
.chain::before{content:"";position:absolute;left:29px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--orange),var(--green) 60%,var(--ink))}
.m-node{position:relative;padding-left:84px;margin-bottom:20px}
.m-node .dot{position:absolute;left:16px;top:26px;width:28px;height:28px;border-radius:50%;background:var(--ink);display:flex;align-items:center;justify-content:center;z-index:2}
.m-node .dot i{width:10px;height:10px;border-radius:50%;background:var(--orange)}
.m-node .dot.g{background:var(--green)} .m-node .dot.g i{width:10px;height:10px;border-radius:2px;background:#fff}
.m-node .dot.o{background:var(--orange)} .m-node .dot.o i{width:10px;height:10px;border-radius:50%;background:#fff}
.m-node .card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px 30px;transition:.25s;overflow:hidden}
.m-node .card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px}
.m-node .card.o::before{background:var(--orange)}
.m-node .card.g::before{background:var(--green)}
.m-node .card.blk::before{background:var(--ink)}
.m-node .card:hover{transform:translateX(6px);box-shadow:0 14px 36px rgba(20,20,20,.09)}
.m-row{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}
.idx{font-size:12px;font-weight:800;padding:3px 12px;border-radius:20px;letter-spacing:.1em}
.idx.or{background:var(--orange-soft);color:var(--orange-deep)}
.idx.gr{background:var(--green-soft);color:var(--green-deep)}
.idx.dk{background:var(--ink);color:#fff}
.m-row h4{font-size:19px;font-weight:900}
.m-link{font-size:13px;color:var(--gray);margin-top:4px;font-weight:600;letter-spacing:.02em}
.m-link em{color:var(--orange);font-style:normal}
.m-node .card p{color:var(--ink-2);font-size:14.5px;margin-top:8px;max-width:820px}

/* ============ 课程：措位卡 ============ */
.courses{background:var(--green-soft);padding:84px 0;overflow:hidden;position:relative}
.courses::before{content:"6";position:absolute;right:-40px;top:10px;font-size:260px;font-weight:900;color:rgba(30,142,90,.06);font-family:Georgia,serif;line-height:1}
.course-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;margin-top:44px;position:relative}
.ccard{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:30px;transition:.28s;position:relative;overflow:hidden}
.ccard:nth-child(even){transform:translateY(26px)}
.ccard:hover{transform:translateY(-4px);box-shadow:0 22px 46px rgba(20,20,20,.12)}
.ccard:hover:nth-child(even){transform:translateY(20px)}
.ccard::after{content:"";position:absolute;right:-40px;top:-40px;width:130px;height:130px;border-radius:50%;background:radial-gradient(circle,rgba(242,107,29,.14),transparent 70%)}
.ccard .top{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.ccard .no{font-family:Georgia,serif;font-size:15px;font-weight:700;color:var(--orange)}
.ccard h3{font-size:18px;margin:14px 0 8px;font-weight:900}
.ccard p{color:var(--ink-2);font-size:14px}
.ccard .price{margin-top:16px;display:flex;align-items:baseline;gap:6px}
.ccard .price b{font-size:24px;font-weight:900;color:var(--orange)}
.ccard .price span{font-size:13px;color:var(--gray)}
.ccard .go{margin-top:6px;font-weight:700;color:var(--green-deep);font-size:13.5px;display:inline-block}

/* ============ 商店 ============ */
.shop{background:var(--bg);padding:84px 0}
.shop-strip{display:grid;grid-template-columns:1fr 1fr;gap:0;margin-top:44px;border:1px solid var(--line);border-radius:20px;overflow:hidden;background:var(--card)}
.shop-main{padding:40px;border-right:1px solid var(--line);position:relative;overflow:hidden}
.shop-main::after{content:"";position:absolute;right:-30px;bottom:-30px;width:140px;height:140px;border-radius:50%;background:linear-gradient(140deg,rgba(242,107,29,.2),rgba(30,142,90,.2))}
.shop-main h3{font-size:24px;font-weight:900;line-height:1.35}
.shop-main p{color:var(--gray);margin:12px 0 22px;font-size:15px}
.shop-side{background:var(--green-soft);padding:40px}
.shop-side h5{font-size:13px;letter-spacing:.16em;color:var(--green-deep);font-weight:700;margin-bottom:18px}
.side-item{display:flex;align-items:center;gap:14px;padding:12px 0;border-bottom:1px dashed rgba(30,142,90,.3)}
.side-item:last-child{border-bottom:none}
.side-item .sq{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex:none}
.side-item .sq.o{background:var(--orange);color:#fff}
.side-item .sq.g{background:var(--green);color:#fff}
.side-item .sq.dk{background:var(--ink);color:#fff}
.side-item b{font-size:15px;font-weight:800;display:block;line-height:1.3}
.side-item span{font-size:12.5px;color:var(--gray)}

/* ============ 洞见 ============ */
.insights{background:var(--orange-soft);padding:84px 0;overflow:hidden;position:relative}
.insights::after{content:"";position:absolute;left:-60px;bottom:-80px;width:240px;height:240px;background:rgba(30,142,90,.08);border-radius:50%}
.article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:44px;position:relative}
.artc{background:var(--card);border-radius:18px;padding:28px;border:1px solid var(--line);transition:.25s;display:flex;flex-direction:column}
.artc:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(20,20,20,.1)}
.artc .k{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--orange),var(--green));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:18px;margin-bottom:16px}
.artc h3{font-size:17px;line-height:1.5;font-weight:800;flex:1}
.artc h3 a:hover{color:var(--orange)}
.artc p{color:var(--gray);font-size:13.5px;margin-top:10px}

/* ============ CTA banner ============ */
.cta-banner{background:linear-gradient(100deg,var(--orange),#ef8a3d 55%,var(--green));padding:56px 0;color:#fff;position:relative;overflow:hidden}
.cta-banner::before{content:"";position:absolute;inset:0;opacity:.12;background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);background-size:40px 40px}
.cta-banner .container{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;position:relative}
.cta-banner h3{font-size:28px;font-weight:900;line-height:1.4}
.cta-banner p{opacity:.9;margin-top:8px;font-size:15px}

/* ============ 通用暗色页头（全站一致） ============ */
.method-hero .chapter-title{color:#fff}
.method-hero .chapter-sub{color:#cfcfcf}
.method-hero .breadcrumb, .method-hero .breadcrumb a{color:#9a9a9a}
.method-hero .breadcrumb a:hover{color:var(--orange)}
.method-hero{border-bottom:1px solid rgba(255,255,255,.06)}

/* ============ 旧段兼容（保整站不崩） ============ */
.meth{display:flex;gap:22px;align-items:flex-start;padding:22px;border-left:4px solid var(--orange);background:var(--card);border-radius:0 12px 12px 0;margin-bottom:16px}
.meth.g{border-left-color:var(--green)}
.meth.blk{border-left-color:var(--ink)}
.meth .idx{font-size:13px;font-weight:800;color:var(--orange);white-space:nowrap}
.meth.g .idx{color:var(--green)}
.meth.blk .idx{color:var(--ink)}
.meth h4{font-size:17px;margin-bottom:6px}
.meth p{font-size:14.5px;color:var(--ink-2)}
.geo{position:relative}

/* 文章页 hero 与正文 */
.post-hero{position:relative;overflow:hidden;background:linear-gradient(180deg,var(--ink),#26221e);color:#fff;padding:64px 0;border-bottom:1px solid rgba(255,255,255,.06)}
.post-hero::before{content:"";position:absolute;top:-130px;right:-60px;width:400px;height:400px;border:1px solid rgba(242,107,29,.25);border-radius:50%}
.post-hero .container{position:relative}
.post-title{font-size:34px;font-weight:900;line-height:1.3;color:#fff;margin-top:16px;max-width:820px;letter-spacing:-.5px}
.post-meta{display:flex;align-items:center;gap:14px;margin-bottom:6px}
.post-meta .date{color:#b8b8b8;font-size:13px;letter-spacing:.06em}
.post-article{max-width:760px;margin:0 auto;padding:56px 0 64px;color:var(--ink-2)}
.post-article h2{font-size:24px;font-weight:900;color:var(--ink);margin:38px 0 14px}
.post-article h3{font-size:19px;font-weight:800;color:var(--ink);margin:28px 0 10px}
.post-article p{margin:14px 0;line-height:1.95}
.post-article ul,.post-article ol{margin:14px 0 14px 26px}
.post-article li{margin:7px 0;line-height:1.8}
.post-article strong{color:var(--ink)}
.post-article em{color:var(--green-deep);font-style:normal;font-weight:700}
.highlight{border-left:4px solid var(--orange);background:var(--orange-soft);padding:20px 26px;border-radius:0 14px 14px 0;margin:24px 0;font-size:16px;color:var(--ink-2);line-height:1.8}
.highlight b{color:var(--orange-deep)}
.post-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:34px;padding-top:24px;border-top:1px solid var(--line)}
.pill{background:var(--green-soft);color:var(--green-deep);font-size:12.5px;font-weight:700;padding:5px 14px;border-radius:20px}
.pill.o{background:var(--orange-soft);color:var(--orange-deep)}
.tag.dk{background:var(--ink);color:#fff}
.post-article hr{border:none;border-top:1px dashed var(--line);margin:30px 0}
.post-article code{background:var(--green-soft);color:var(--green-deep);padding:2px 7px;border-radius:6px;font-size:.92em}

/* 文章页 hero 与正文（旧容器备用） */

/* ============ 方法论详情页 ============ */
.method-hero{background:var(--ink);color:#fff;padding:64px 0;position:relative;overflow:hidden}
.method-hero::before{content:"";position:absolute;top:-140px;right:-80px;width:420px;height:420px;border:1px solid rgba(242,107,29,.25);border-radius:50%}
.method-hero::after{content:"";position:absolute;top:-90px;right:-30px;width:300px;height:300px;border:1px solid rgba(30,142,90,.3);border-radius:50%}
.method-hero .container{position:relative}
.m-body{max-width:860px;margin:0 auto;padding:56px 0 72px}
.m-block{margin-bottom:44px}
.m-block h3{font-size:22px;font-weight:900;display:flex;align-items:center;gap:12px;margin-bottom:16px}
.m-block h3 i{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--orange),var(--green));display:inline-block;flex:none}
.m-block p{color:var(--ink-2);margin-bottom:12px}
.m-block ul{list-style:none}
.m-block ul li{padding:9px 0 9px 30px;position:relative;color:var(--ink-2);border-bottom:1px dashed var(--line)}
.m-block ul li:last-child{border-bottom:none}
.m-block ul li::before{content:"";position:absolute;left:6px;top:18px;width:9px;height:9px;background:var(--orange);transform:rotate(45deg)}
.m-callout{border-left:4px solid var(--green);background:var(--green-soft);padding:20px 26px;border-radius:0 14px 14px 0;margin:22px 0;font-size:15.5px;color:var(--green-deep);font-weight:600}
.m-quote{background:var(--ink);color:#fff;padding:34px 40px;border-radius:18px;margin-top:12px;font-size:21px;font-weight:800;line-height:1.6;position:relative;overflow:hidden}
.m-quote::before{content:"“";position:absolute;top:-30px;left:10px;font-size:150px;color:rgba(242,107,29,.35);font-family:Georgia,serif}
.m-quote span{display:block;margin-top:10px;font-size:14px;color:#ffb58a;font-weight:600}

/* ============ 排版通用 ============ */
.quote{border-left:3px solid var(--green);background:var(--green-soft);padding:16px 22px;border-radius:0 10px 10px 0;font-size:15px;color:var(--green-deep);margin:18px 0}
.breadcrumb{font-size:13px;color:var(--gray);margin-bottom:10px}
.breadcrumb a{color:var(--gray)}.breadcrumb a:hover{color:var(--orange)}

/* cards & grids (通用) */
.grid{display:grid;gap:24px}
.cols-2{grid-template-columns:repeat(2,1fr)}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-4{grid-template-columns:repeat(4,1fr)}
.card-base{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:26px;transition:.25s}
.tag{display:inline-block;background:var(--green-soft);color:var(--green-deep);font-size:12px;font-weight:700;padding:4px 12px;border-radius:20px;margin-bottom:12px;letter-spacing:.05em}
.tag.orange{background:var(--orange-soft);color:var(--orange-deep)}

/* band (通用暗色) */
.band{background:var(--ink);color:#fff}
.band .sec-eyebrow{color:var(--green)}
.band .sec-title{color:#fff}

/* course rows (详情) */
.course{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:32px;margin-bottom:22px}
.course .head{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
.course .price{font-size:22px;font-weight:800;color:var(--orange)}
.course ul{list-style:none;font-size:14.5px;color:var(--ink-2);margin:12px 0}
.course ul li{padding:5px 0 5px 24px;position:relative}
.course ul li::before{content:"";position:absolute;left:0;top:15px;width:9px;height:9px;border-radius:2px;background:var(--green);transform:rotate(45deg)}

/* footer */
.cta-banner{background:linear-gradient(100deg,var(--orange),#ef8a3d 55%,var(--green));padding:56px 0;color:#fff;position:relative;overflow:hidden}
.cta-banner::before{content:"";position:absolute;inset:0;opacity:.12;background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);background-size:40px 40px}
.cta-banner .container{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;position:relative}
.cta-banner h3{font-size:28px;font-weight:900;line-height:1.4}
.cta-banner p{opacity:.9;margin-top:8px;font-size:15px}
footer{background:var(--ink);color:#cfcfcf;padding:54px 0 28px}
footer .cols{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px}
footer h5{color:#fff;font-size:15px;margin-bottom:14px;position:relative;padding-left:12px}
footer h5::before{content:"";position:absolute;left:0;top:5px;width:4px;height:16px;background:linear-gradient(180deg,var(--orange),var(--green))}
footer a{display:block;color:#cfcfcf;font-size:14px;line-height:2.1}
footer a:hover{color:var(--orange)}
.copyright{border-top:1px solid #2c2c2c;margin-top:34px;padding-top:20px;font-size:12.5px;color:#8f8f8f;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.qr-row{display:flex;gap:22px;flex-wrap:wrap;margin-top:20px}
.qr-item{text-align:center;width:128px}
.qr-item img{width:112px;height:112px;object-fit:cover;border-radius:12px;border:1px solid var(--line);box-shadow:0 8px 20px rgba(20,20,20,.12)}
.qr-item span{font-size:12.5px;color:var(--gray);margin-top:8px;display:block;font-weight:600}

/* ============ 响应式 ============ */
@media(max-width:960px){
  .hero .inner{grid-template-columns:1fr;min-height:auto;padding:56px 0}
  .engine{height:360px;margin-top:30px}
  .stats{grid-template-columns:1fr 1fr}
  .course-grid{grid-template-columns:1fr}
  .ccard:nth-child(even){transform:none}
  .ccard:hover:nth-child(even){transform:translateY(-4px)}
  .shop-strip{grid-template-columns:1fr}
  .shop-main{border-right:none;border-bottom:1px solid var(--line)}
  .article-list{grid-template-columns:1fr 1fr}
}
/* ============ 方法论总览强化卡 ============ */
.mck{position:relative;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:28px 28px 24px;transition:.28s;overflow:hidden;display:flex;flex-direction:column}
.mck::after{content:attr(data-no);position:absolute;right:-6px;top:-22px;font-size:96px;font-weight:900;font-family:Georgia,serif;color:rgba(20,20,20,.05);line-height:1;letter-spacing:-4px}
.mck:hover{transform:translateY(-5px);box-shadow:0 20px 44px rgba(20,20,20,.11)}
.mck .m-top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;margin-bottom:16px}
.mck h3{font-size:18.5px;font-weight:900;line-height:1.4}
.mck .m-exp{color:var(--gray);font-size:13.5px;margin-top:6px;line-height:1.7}
.mck .m-go{margin-top:auto;padding-top:16px;font-weight:800;font-size:13.5px}
.mck .m-go a{display:inline-flex;align-items:center;gap:6px;transition:.2s}
.mck .m-go a:hover{transform:translateX(4px)}
.mck .m-bar{position:absolute;left:0;top:0;width:100%;height:4px}
.mck .m-bar.or{background:linear-gradient(90deg,var(--orange),rgba(242,107,29,.15))}
.mck .m-bar.gr{background:linear-gradient(90deg,var(--green),rgba(30,142,90,.15))}
.mck .m-bar.dk{background:linear-gradient(90deg,var(--ink),rgba(20,20,20,.15))}

/* ============ 课程架构图（因果版） ============ */
.arch{background:var(--bg);padding:40px 0}
.arch-band{background:var(--ink);border-radius:26px;padding:42px 40px 40px;position:relative;overflow:hidden;color:#fff}
.arch-band::before{content:"";position:absolute;top:-120px;right:-60px;width:340px;height:340px;border:1px solid rgba(242,107,29,.22);border-radius:50%}
.arch-band::after{content:"";position:absolute;top:-70px;right:-10px;width:240px;height:240px;border:1px solid rgba(30,142,90,.28);border-radius:50%}
.arch-cap{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;margin-bottom:8px;position:relative;z-index:2}
.arch-cap h3{font-size:26px;font-weight:900;letter-spacing:-.5px}
.arch-cap .tag{position:relative;z-index:2}
.arch-sub{color:#c9c9c9;font-size:15px;max-width:760px;position:relative;z-index:2}
.arch-hint{display:flex;align-items:center;gap:12px;margin:26px 0 6px;font-size:13px;color:#9a9a9a;letter-spacing:.05em;position:relative;z-index:2;flex-wrap:wrap}
.arch-hint b{font-weight:800}
.arch-hint .lvl{display:inline-flex;align-items:center;gap:7px}
.arch-hint .dot{width:10px;height:10px;border-radius:50%;display:inline-block}
.arch-stages{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;position:relative;z-index:2;margin-top:18px}
.stage{display:flex;flex-direction:column}
.stage-hd{padding:14px 14px;border-radius:14px;margin-bottom:12px;color:#fff;position:relative}
.stage-hd .no{font-family:Georgia,serif;font-size:11px;letter-spacing:.12em;opacity:.8}
.stage-hd h4{font-size:16px;font-weight:800;margin-top:2px}
.stage-hd small{display:block;font-size:11.5px;font-weight:500;opacity:.85;margin-top:2px}
.stage-o{background:linear-gradient(135deg,var(--orange),var(--orange-deep))}
.stage-g{background:linear-gradient(135deg,var(--green),var(--green-deep))}
.stage-k{background:linear-gradient(140deg,#2a2a2a,var(--ink))}
.stage-p{background:linear-gradient(140deg,#5a3d1f,#241402)}
.stage-flow{position:relative}
.stage-block{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.10);border-radius:14px;padding:16px;margin-bottom:10px;transition:.25s;display:block;color:#fff;position:relative;overflow:hidden}
.stage-block:hover{transform:translateY(-3px);border-color:rgba(255,255,255,.28);background:rgba(255,255,255,.10)}
.stage-block .sb-tag{font-size:10.5px;font-weight:700;letter-spacing:.1em;display:inline-block;padding:2px 9px;border-radius:20px;margin-bottom:8px}
.stage-block h5{font-size:14.5px;font-weight:800;line-height:1.4}
.stage-block .sb-p{font-size:12px;color:#c5c5c5;margin-top:6px;line-height:1.55}
.stage-block .sb-price{margin-top:10px;font-size:14px;font-weight:800}
.sb-tag.o{background:rgba(242,107,29,.25);color:#ffc9a8}
.sb-tag.g{background:rgba(30,142,90,.30);color:#bfe8d2}
.sb-tag.k{background:rgba(255,255,255,.14);color:#fff}
.stage-block .sb-ghost{position:absolute;right:8px;top:8px;font-size:10px;letter-spacing:.06em;color:#8f8f8f}
/* 递进箭头：下一列之间的“→” */
.stage-flow .sb-next{position:absolute;right:-11px;top:50%;width:22px;height:22px;transform:translateY(-50%);background:var(--orange);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;color:#fff;z-index:3;box-shadow:0 3px 8px rgba(0,0,0,.3)}
/* 商店通栏 */
.arch-store{margin-top:22px;background:linear-gradient(100deg,var(--orange),#ef8a3d 55%,var(--green));padding:20px 26px;border-radius:16px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;color:#fff;position:relative;z-index:2;box-shadow:0 14px 34px rgba(242,107,29,.25)}
.arch-store .st-l{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.arch-store .st-badge{width:44px;height:44px;border-radius:13px;background:rgba(255,255,255,.2);display:flex;align-items:center;justify-content:center;font-weight:900;font-size:13px;letter-spacing:.04em;flex:none}
.arch-store h5{font-size:17px;font-weight:900}
.arch-store p{font-size:13px;opacity:.92;margin-top:3px}
.arch-store .btn-light{border-color:#fff;color:#fff;padding:10px 22px}
.arch-store .btn-light:hover{background:#fff;color:var(--orange)}
/* 架构图响应式 */
@media(max-width:960px){
  .arch-stages{grid-template-columns:1fr 1fr}
  .stage-flow .sb-next{display:none}
}
@media(max-width:620px){
  .arch-stages{grid-template-columns:1fr}
  .arch-band{padding:30px 20px}
  .arch-store{flex-direction:column;align-items:flex-start}
}

/* ============ 课程体系图 · 对象驱动版（横向·浅色） ============ */
.rmap{background:transparent;padding:44px 0;position:relative;z-index:2}
.rm-band{background:var(--card);border:1px solid var(--line);border-radius:26px;padding:42px 40px 40px;position:relative;color:var(--ink);box-shadow:0 18px 46px rgba(20,20,20,.05)}
.rm-cap,.rm-sub,.rm-legend,.rm-row{position:relative;z-index:1}
.rm-cap{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;margin-bottom:10px}
.rm-cap h3{font-size:26px;font-weight:900;letter-spacing:-.5px}
.rm-sub{color:var(--ink-2);font-size:15px;max-width:780px}
.rm-legend{display:flex;gap:18px;flex-wrap:wrap;margin:24px 0 8px;font-size:13px;color:var(--ink-2)}
.rm-legend .li{display:inline-flex;align-items:center;gap:7px}
.rm-legend .sq{width:13px;height:13px;border-radius:4px;display:inline-block}
/* 主体横向六段 */
.rm-row{display:grid;grid-template-columns:.95fr .42fr 1.05fr .42fr 1.1fr .42fr .9fr;gap:12px;margin-top:20px;align-items:center}
.rm-flow{display:flex;align-items:center;justify-content:center;position:relative}
.rm-flow .rm-arr{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:900;color:#fff;flex:none;box-shadow:0 4px 12px rgba(0,0,0,.16)}
.rm-flow .rm-arr.or{background:linear-gradient(135deg,var(--orange),#c25b12)}
.rm-flow .rm-arr.gr{background:linear-gradient(135deg,var(--green),#0f6a41)}
.rm-flow .rm-arr.k{background:var(--ink)}
/* 阶段头 */
.rm-zone{font-size:11px;letter-spacing:.14em;color:var(--gray);margin-bottom:10px;font-weight:800;text-transform:uppercase}
.rm-zone b{color:var(--ink);font-weight:900}
/* 入门/对象卡 */
.rm-obj{background:#fff;border:1px solid var(--line);box-shadow:0 4px 14px rgba(20,20,20,.04);border-radius:14px;padding:14px 14px 12px;margin-bottom:10px;transition:.22s;display:block}
.rm-obj:hover{transform:translateY(-3px);border-color:var(--orange);box-shadow:0 10px 24px rgba(242,107,29,.14)}
.rm-obj .ob-head{display:flex;align-items:center;gap:8px;margin-bottom:9px}
.rm-obj .ob-dot{width:9px;height:9px;border-radius:50%}
.rm-obj h5{font-size:13px;font-weight:800;color:var(--ink)}
.rm-obj .ob-line{font-size:12px;color:var(--ink-2);line-height:1.6}
.rm-obj .ob-line b{color:var(--ink);font-weight:700}
.rm-ob-in{background:var(--orange-soft);border:1px solid rgba(242,107,29,.35)}
.rm-obj.rm-ob-in:hover{border-color:var(--orange)}
.rm-obj.obj-hr{background:#eef1f8;border-color:#c9d4ee;border-left:4px solid #2b4b8f}
.rm-obj.obj-hr:hover{border-color:#2b4b8f;box-shadow:0 10px 24px rgba(43,75,143,.18)}
.rm-obj.obj-td{background:#e8f5ee;border-color:#bcdccb;border-left:4px solid var(--green)}
.rm-obj.obj-td:hover{border-color:var(--green);box-shadow:0 10px 24px rgba(30,142,90,.16)}
.rm-obj.obj-co{background:#eef1ff;border-color:#cdd6fa;border-left:4px solid #6b8dff}
.rm-obj.obj-co:hover{border-color:#6b8dff;box-shadow:0 10px 24px rgba(107,141,255,.18)}
/* 核心上叠放的 HR3.0 独立卡（与核心保持间距、无箭头） */
.rm-hr3top{margin:0 auto 24px;max-width:264px;background:linear-gradient(150deg,#fff4e8,#ffe9d2);border:1.5px solid rgba(242,107,29,.5);border-radius:13px;padding:12px 16px;display:block;text-align:left;transition:.2s}
.rm-hr3top:hover{border-color:var(--orange);box-shadow:0 10px 22px rgba(242,107,29,.16);transform:translateY(-2px)}
.rm-hr3top .ot-tag{display:inline-block;font-size:10px;font-weight:800;letter-spacing:.1em;padding:2px 8px;border-radius:20px;background:var(--orange);color:#fff;margin-bottom:6px}
.rm-hr3top h5{font-size:13px;font-weight:900;color:var(--ink);line-height:1.35}
.rm-hr3top .core-p{font-size:12px;color:var(--ink-2);margin-top:5px;line-height:1.5}
.rm-hr3top .core-p b{color:var(--ink);font-weight:700}
/* 核心区列容器：让 HR3.0 卡叠在核心块正上方；整列上移让核心四课对准箭头行 */
.rm-core-col{display:flex;flex-direction:column;margin-top:-58px}
.rm-coreline{text-align:center;padding:22px 16px;background:linear-gradient(160deg,#fff4e8,#fff0e0 60%,#ffe9d2);border-radius:18px}
.core-big{display:block;font-size:17px;font-weight:900;color:var(--ink);line-height:1.28;letter-spacing:-.3px}
.core-big .w{color:var(--orange)}
.core-hint{display:block;font-size:10.5px;color:var(--ink-2);margin-top:6px;line-height:1.5}
.core-hint b{color:var(--ink);font-weight:700}
/* 图下注脚 */
.rm-foot{margin-top:20px;padding-top:16px;border-top:1px dashed rgba(0,0,0,.16);font-size:12px;color:var(--ink-2);line-height:1.7}
.rm-foot a{color:var(--orange);font-weight:700;white-space:nowrap}
.rm-foot a:hover{text-decoration:underline}
/* 出口卡 */
.rm-out{background:#fff;border:1px solid var(--line);border-radius:14px;padding:15px;margin-bottom:10px;transition:.22s;display:block;box-shadow:0 4px 14px rgba(20,20,20,.04)}
.rm-out:hover{transform:translateY(-3px);border-color:var(--green);box-shadow:0 10px 24px rgba(30,142,90,.14)}
.rm-out .ot-tag{display:inline-block;font-size:10.5px;font-weight:800;letter-spacing:.1em;padding:3px 9px;border-radius:20px;margin-bottom:8px}
.rm-out h5{font-size:13px;font-weight:800;line-height:1.35;color:var(--ink)}
.rm-out .ot-p{font-size:12px;color:var(--ink-2);margin-top:6px;line-height:1.55}
.rm-out .ot-ghost{float:right;font-size:10px;letter-spacing:.06em;color:var(--gray)}
/* 商店通栏 */
.rm-store{margin-top:18px;background:linear-gradient(100deg,var(--orange),#ef8a3d 55%,var(--green));padding:20px 26px;border-radius:16px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;color:#fff;position:relative;box-shadow:0 14px 34px rgba(242,107,29,.25)}
.rm-store .st-l{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.rm-store .st-badge{width:44px;height:44px;border-radius:13px;background:rgba(255,255,255,.2);display:flex;align-items:center;justify-content:center;font-weight:900;font-size:13px;letter-spacing:.04em;flex:none}
.rm-store h5{font-size:15px;font-weight:900}
.rm-store p{font-size:12px;opacity:.92;margin-top:3px}
.rm-store .btn-light{border-color:#fff;color:#fff;padding:10px 22px}
.rm-store .btn-light:hover{background:#fff;color:var(--orange)}
/* ===== 洞见文章：分类列表 + 视频播放器 ===== */
.post-list-section{padding:40px 0 64px}
.viz-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.viz-tab{border:1.5px solid var(--line);background:#fff;border-radius:30px;padding:9px 18px;font-size:13.5px;font-weight:800;color:var(--ink-2);cursor:pointer;transition:.2s}
.viz-tab:hover{border-color:var(--orange);color:var(--orange)}
.viz-tab.on{background:var(--ink);border-color:var(--ink);color:#fff}
.viz-main-center{display:flex}
.viz-subrow{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 24px;padding-left:14px;border-left:3px solid var(--orange)}
.viz-sub{border:none;background:transparent;padding:6px 10px;font-size:12.5px;font-weight:700;color:#8a8a8a;cursor:pointer;border-radius:8px;transition:.18s}
.viz-sub:hover{color:var(--orange)}
.viz-sub.on{background:var(--orange-soft);color:var(--orange)}
.art-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.art-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 24px;transition:.22s;display:flex;flex-direction:column}
.art-card:hover{transform:translateY(-3px);border-color:var(--orange);box-shadow:0 14px 30px rgba(20,20,20,.07)}
.art-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:12px}
.art-top .tag{font-size:11px}
.art-date{font-size:12px;color:var(--gray)}
.art-video{font-size:11px;font-weight:800;color:var(--green);background:#e7f6ee;padding:3px 9px;border-radius:20px}
.art-card h3{font-size:18px;line-height:1.4;margin-bottom:8px}
.art-card h3 a{color:var(--ink)}
.art-card h3 a:hover{color:var(--orange)}
.art-card p{font-size:13.5px;color:var(--ink-2);line-height:1.7;flex:1}
.art-more{display:inline-block;margin-top:14px;font-size:13px;font-weight:800;color:var(--orange)}
.art-more:hover{text-decoration:underline}
.art-empty{color:var(--gray);padding:40px 0;text-align:center;font-size:14px}

/* 文章详情：导读 + 全文折叠 */
.lead-box{background:linear-gradient(135deg,#fff7ee 0%,#fffdf7 100%);border:1px solid #f2dfc9;border-left:4px solid var(--orange);border-radius:14px;padding:22px 26px;margin-bottom:28px}
.lead-label{display:inline-block;background:var(--orange);color:#fff;font-size:12px;font-weight:800;padding:3px 12px;border-radius:20px;margin-bottom:10px;letter-spacing:1px}
.lead-box p{font-size:15px;line-height:1.85;color:var(--ink-2);margin:6px 0}
.full-article{margin:14px 0 28px}
.full-article summary{list-style:none;cursor:pointer;font-size:14px;font-weight:800;color:var(--orange);background:var(--orange-soft);display:inline-block;padding:8px 18px;border-radius:30px;user-select:none}
.full-article summary::-webkit-details-marker{display:none}
.full-article summary::before{content:"＋ ";font-weight:900}
.full-article[open] summary::before{content:"－ "}
.full-article-body{margin-top:22px;padding-top:22px;border-top:1px dashed var(--line)}
.full-article-body p{font-size:15px;line-height:1.9;color:var(--ink-2);margin:12px 0;text-indent:2em}
.full-article-body h3{text-indent:0;margin-top:32px!important}
.post-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;padding-top:20px;border-top:1px solid var(--line);margin-top:16px}
.post-tags{display:flex;gap:8px;flex-wrap:wrap}
.post-back{font-size:13px;font-weight:700;color:var(--ink-2)}
.post-back:hover{color:var(--orange)}
.post-video{margin:28px 0}
.post-video video{width:100%;border-radius:14px;background:#000;display:block;box-shadow:0 14px 34px rgba(0,0,0,.18)}
.post-video .vc{font-size:12.5px;color:var(--gray);text-align:center;margin-top:10px}
@media(max-width:820px){.art-grid{grid-template-columns:1fr}}
@media(max-width:1080px){
  .rm-row{grid-template-columns:1fr 1fr;gap:14px}
  .rm-flow .rm-arr{display:none}
}
@media(max-width:640px){
  .rm-row{grid-template-columns:1fr}
  .rm-band{padding:30px 20px}
  .rm-store{flex-direction:column;align-items:flex-start}
}

/* 通用卡片兜底（详情页/旧结构） */
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:26px;transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(20,20,20,.08)}
.card h3{font-size:19px;margin-bottom:10px}
.card p{color:var(--ink-2);font-size:14.5px}

@media(max-width:620px){
  .cols-2,.cols-3,.cols-4{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .article-list{grid-template-columns:1fr}
  .stat::before{display:none}
  .hero h1{font-size:31px}
  .engine{height:300px}
  .chapter-title{font-size:27px}
  footer .cols{grid-template-columns:1fr}
  .m-node{padding-left:60px}
  .chain::before{left:21px}
  .m-node .dot{left:8px}
  .m-row{flex-direction:column;align-items:flex-start;gap:6px}
}

/* ========= 移动端菜单（<=960px 切换为汉堡菜单，避免小屏 PC 导航溢出） ========= */
.mobile-nav{display:none}

@media(max-width:960px){
  .nav-links{display:none}
  .nav-burger{display:flex}
  .mobile-nav{display:block;position:absolute;top:66px;left:0;right:0;background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:0 24px;box-shadow:0 8px 24px rgba(0,0,0,.08);transform:translateY(-10px);opacity:0;transition:transform .25s,opacity .25s;pointer-events:none;z-index:49}
  .mobile-nav.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .mobile-nav a{display:block;padding:14px 0;border-bottom:1px solid var(--line);font-size:15px;font-weight:600;color:var(--ink)}
  .mobile-nav a:last-child{border-bottom:none}
  .mobile-nav a.cta-btn{display:block;margin:10px 0;padding:12px 20px;background:var(--ink);color:#fff;border-radius:8px;text-align:center}
  .nav-burger.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
  .nav-burger.open span:nth-child(2){opacity:0}
  .nav-burger.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
}

/* === 旧 header 结构兼容（posts 文章页使用 .header/.logo） === */
.header{position:sticky;top:0;z-index:50;background:rgba(251,250,248,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.logo{display:flex;align-items:center;gap:9px;font-weight:900;font-size:19px;letter-spacing:-.3px;color:var(--ink)}