/* 道法自然 · 适老化 + 道家国风暖色 */
:root{
  --paper:#F6EFDE;        /* 宣纸米黄 */
  --paper2:#FBF6EA;
  --card:#FFFDF7;
  --ink:#2A241C;          /* 墨 */
  --ink-soft:#5b5346;
  --cinnabar:#C0392B;     /* 朱砂红 */
  --cinnabar-d:#9c2c20;
  --gold:#B0884E;         /* 赭金 */
  --jade:#3F6F5F;         /* 黛绿 */
  --line:rgba(42,36,28,.16);
  --serif:"STKaiti","KaiTi","Kaiti SC","Songti SC",STSong,serif;
  --sans:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --shadow:0 16px 44px rgba(42,36,28,.12);
}
*{box-sizing:border-box;margin:0;padding:0}
html{font-size:20px;scroll-behavior:smooth}          /* 适老：大基准字号 */
body{background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.85;font-size:1rem;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3,.logo-text,.price-num{font-family:var(--serif)}
a{color:inherit;text-decoration:none}
.cn{color:var(--cinnabar)}
strong{color:var(--cinnabar)}

/* 顶栏 */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;transition:.3s;background:rgba(246,239,222,0)}
.nav.scrolled{background:rgba(246,239,222,.96);backdrop-filter:blur(8px);box-shadow:0 1px 0 var(--line)}
.nav-inner{max-width:1180px;margin:0 auto;height:80px;padding:0 24px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:12px;color:var(--ink)}
.seal{display:block}
.logo-text{font-size:1.4rem;font-weight:700;display:flex;flex-direction:column;line-height:1.1}
.logo-text i{font-style:normal;font-size:.66rem;letter-spacing:2px;color:var(--gold);margin-top:3px;font-family:var(--sans)}
.nav-links{display:flex;align-items:center;gap:30px;font-size:1.05rem}
.nav-links a{color:var(--ink);opacity:.85;transition:.2s}
.nav-links a:hover{opacity:1;color:var(--cinnabar)}
.nav-cta{background:var(--cinnabar);color:#fff!important;opacity:1!important;padding:10px 22px;border-radius:6px}
.nav-cta:hover{background:var(--cinnabar-d);color:#fff!important}
.nav-toggle{display:none;flex-direction:column;gap:6px;background:none;border:none;padding:8px;cursor:pointer}
.nav-toggle span{width:28px;height:3px;background:var(--ink);border-radius:2px}

/* 首屏 */
.hero{position:relative;min-height:96vh;display:flex;align-items:center;padding:140px 24px 80px;overflow:hidden;
  background:radial-gradient(900px 600px at 80% 20%,rgba(176,136,78,.16),transparent 60%),linear-gradient(180deg,#FBF6EA,var(--paper) 60%,#EFE6D0)}
.hero-bg{position:absolute;right:-40px;top:50%;transform:translateY(-50%);color:var(--jade);opacity:.5;pointer-events:none}
.taiji{width:min(56vw,560px);height:min(56vw,560px)}
.hero-inner{position:relative;max-width:1180px;margin:0 auto;width:100%}
.seal-line{display:inline-block;font-family:var(--serif);font-size:1.1rem;letter-spacing:8px;color:#fff;background:var(--cinnabar);padding:8px 20px;border-radius:4px}
.hero-title{font-size:clamp(3rem,7vw,5.4rem);line-height:1.18;margin-top:26px;font-weight:700}
.hero-sub{margin-top:26px;font-size:clamp(1.15rem,2.4vw,1.5rem);color:var(--ink-soft);max-width:620px}
.hero-actions{display:flex;gap:18px;margin-top:40px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:18px 38px;border-radius:8px;font-size:1.2rem;font-weight:700;font-family:var(--sans);cursor:pointer;transition:.25s;border:2px solid transparent}
.btn-primary{background:var(--cinnabar);color:#fff;box-shadow:0 12px 26px rgba(192,57,43,.28)}
.btn-primary:hover{background:var(--cinnabar-d);transform:translateY(-2px)}
.btn-ghost{border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn.big{padding:20px 44px;font-size:1.3rem;width:100%}
.hero-note{margin-top:34px;font-size:1.05rem;color:var(--ink-soft)}

/* 区块通用 */
.section{max-width:1180px;margin:0 auto;padding:96px 24px}
.section-warm{max-width:none;background:linear-gradient(180deg,#F1E7CF,#F7F0DF)}
.section-warm>*{max-width:1180px;margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px}
.section-head{max-width:760px;margin-bottom:48px}
.kicker{display:inline-block;font-size:.95rem;letter-spacing:4px;color:var(--gold);font-weight:700;border-left:4px solid var(--cinnabar);padding-left:12px}
.kicker.gold{color:#e9d4a3}
.section-head h2{font-size:clamp(2rem,4.4vw,3.1rem);margin-top:14px;line-height:1.3}
.sh-sub{margin-top:14px;font-size:1.2rem;color:var(--ink-soft)}
.sh-sub.light{color:rgba(255,255,255,.82)}

/* 这是什么 */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:start}
.about-text p{font-size:1.2rem;margin-bottom:18px;color:var(--ink-soft)}
.about-text b{color:var(--ink)}
.about-tag{display:inline-block;margin-top:6px;font-family:var(--serif);font-size:1.3rem;color:var(--cinnabar);letter-spacing:2px}
.about-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:28px;box-shadow:var(--shadow)}
.ac-row{display:flex;align-items:center;gap:18px;padding:16px 0;border-bottom:1px dashed var(--line)}
.ac-row:last-child{border-bottom:none}
.ac-ico{font-size:2.2rem;flex:none}
.ac-row b{display:block;font-size:1.2rem}
.ac-row i{font-style:normal;color:var(--ink-soft);font-size:1rem}

/* 你能得到 */
.gain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.gain{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:32px 24px;text-align:center;box-shadow:var(--shadow);transition:.3s}
.gain:hover{transform:translateY(-6px)}
.gain-ico{font-size:3rem}
.gain h3{font-size:1.5rem;margin:14px 0 10px;color:var(--cinnabar)}
.gain p{font-size:1.08rem;color:var(--ink-soft)}

/* 每天怎么做 */
.steps{display:grid;gap:18px}
.step{display:flex;gap:24px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:28px 30px;box-shadow:var(--shadow)}
.step-no{width:64px;height:64px;flex:none;border-radius:50%;background:var(--cinnabar);color:#fff;font-family:var(--serif);font-size:2rem;font-weight:700;display:flex;align-items:center;justify-content:center}
.step-body h3{font-size:1.5rem;margin-bottom:6px}
.step-body p{font-size:1.15rem;color:var(--ink-soft)}
.how-media{margin-top:30px}
.media-ph{height:320px;border-radius:16px;border:2px dashed var(--gold);background:rgba(176,136,78,.08);display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--ink-soft);font-size:1.3rem;gap:10px}
.media-ph i{font-size:1rem}

/* 师门（深色国风） */
.section-ink{max-width:none;color:#f4ead2;background:radial-gradient(700px 400px at 80% 0,rgba(176,136,78,.25),transparent 60%),linear-gradient(160deg,#2f2a20,#221d16)}
.section-ink>*{max-width:1180px;margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px}
.section-ink .section-head h2{color:#fff}
.tree{display:flex;flex-direction:column;align-items:center;gap:0;margin-top:10px}
.tier{display:flex;gap:22px;justify-content:center;flex-wrap:wrap}
.tier-line{width:3px;height:36px;background:linear-gradient(var(--gold),transparent)}
.node{background:rgba(255,253,247,.06);border:1px solid rgba(233,212,163,.35);border-radius:12px;padding:16px 26px;text-align:center;font-size:1.2rem;font-family:var(--serif);min-width:120px}
.node i{display:block;font-style:normal;font-size:.85rem;color:#cdb988;font-family:var(--sans);margin-top:4px}
.node.master{background:var(--cinnabar);border-color:#e9d4a3;font-size:1.6rem;padding:22px 40px;box-shadow:0 14px 40px rgba(192,57,43,.4)}
.node.senior{border-color:var(--gold);background:rgba(176,136,78,.14)}
.tree-note{text-align:center;max-width:760px;margin:34px auto 0;font-size:1.1rem;color:rgba(244,234,210,.82)}
.tree-note b{color:#e9d4a3}

/* 学员作品 */
.cases-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.case{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow);transition:.3s}
.case:hover{transform:translateY(-6px)}
.case-ph{height:260px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:3rem}
.c1{background:linear-gradient(135deg,#8a5a44,#caa07a)}.c2{background:linear-gradient(135deg,#3F6F5F,#7bb5a0)}
.c3{background:linear-gradient(135deg,#C0392B,#e08b7f)}.c4{background:linear-gradient(135deg,#5b5346,#9a8f78)}
.case-cap{padding:16px 18px;font-size:1.05rem;color:var(--ink-soft)}

/* 收益 */
.income-box{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:36px;box-shadow:var(--shadow);max-width:820px}
.income-lead{font-size:1.2rem;color:var(--ink-soft);margin-bottom:22px}
.income-table{width:100%;border-collapse:collapse;font-size:1.15rem;margin-bottom:18px}
.income-table th,.income-table td{border:1px solid var(--line);padding:16px 18px;text-align:left}
.income-table th{background:rgba(176,136,78,.14);font-family:var(--serif)}
.income-note{font-size:1.02rem;color:var(--ink-soft);margin-bottom:20px}
.disclaimer-strong{background:rgba(192,57,43,.08);border:2px solid rgba(192,57,43,.35);border-radius:12px;padding:18px 22px;font-size:1.1rem;color:var(--cinnabar-d);font-weight:600}

/* 加入 */
.join-grid{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:start}
.price-card{background:var(--card);border:2px solid var(--cinnabar);border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
.price-top{background:linear-gradient(160deg,var(--cinnabar),var(--cinnabar-d));color:#fff;padding:34px;text-align:center}
.price-name{font-size:1.3rem;letter-spacing:2px}
.price-num{font-size:4rem;font-weight:700;line-height:1.1;margin-top:6px}
.price-unit{font-size:1.05rem;opacity:.9}
.price-list{list-style:none;padding:28px 30px}
.price-list li{font-size:1.15rem;padding:13px 0 13px 38px;position:relative;border-bottom:1px dashed var(--line)}
.price-list li::before{content:"✓";position:absolute;left:0;top:13px;width:26px;height:26px;background:var(--jade);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.9rem}
.price-renew{margin:0 30px 20px;padding:16px 18px;background:rgba(176,136,78,.12);border-radius:10px;font-size:1.08rem;color:var(--ink-soft)}
.price-renew b{color:var(--cinnabar)}
.price-card .btn{margin:0 30px 30px;width:calc(100% - 60px)}
.join-steps{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:32px;box-shadow:var(--shadow)}
.join-steps h3{font-size:1.6rem;margin-bottom:18px}
.js-row{display:flex;gap:18px;align-items:flex-start;padding:14px 0;border-bottom:1px dashed var(--line)}
.js-row span{width:40px;height:40px;flex:none;background:var(--ink);color:var(--paper);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.2rem}
.js-row p{font-size:1.15rem;color:var(--ink-soft)}
.js-tip{margin-top:18px;font-size:1.02rem;color:var(--gold);font-weight:600}

/* 问答 */
.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.faq{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:26px 28px;box-shadow:var(--shadow)}
.faq h3{font-size:1.3rem;margin-bottom:10px;color:var(--cinnabar)}
.faq p{font-size:1.12rem;color:var(--ink-soft)}

/* 联系 */
.contact-card{max-width:680px;margin:0 auto;text-align:center;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:48px 34px;box-shadow:var(--shadow)}
.contact-card h2{font-size:2.2rem}
.contact-card>p{font-size:1.2rem;color:var(--ink-soft);margin-top:12px}
.qr-box{margin:28px auto 0;width:220px;height:220px}
.qr-ph{width:100%;height:100%;border:2px dashed var(--gold);border-radius:14px;display:flex;align-items:center;justify-content:center;color:var(--ink-soft);font-size:1.05rem;line-height:1.5;background:rgba(176,136,78,.06)}
.contact-tip{margin-top:22px;font-size:1.05rem;color:var(--gold);font-family:var(--serif);letter-spacing:1px}

/* 页脚 */
.footer{background:#221d16;color:rgba(244,234,210,.7);padding:48px 24px}
.footer-inner{max-width:1180px;margin:0 auto}
.f-brand{font-family:var(--serif);font-size:1.4rem;color:#fff;margin-bottom:18px}
.disclaimer{font-size:1rem;line-height:1.9;border-top:1px solid rgba(255,255,255,.12);padding-top:20px;max-width:920px}
.disclaimer strong{color:#e9b4ad}
.copyright{margin-top:18px;font-size:.95rem;color:rgba(244,234,210,.5)}

/* 渐显 */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* 响应式 */
@media(max-width:900px){
  html{font-size:19px}
  .nav-links{position:fixed;top:80px;left:0;right:0;flex-direction:column;gap:0;background:rgba(246,239,222,.98);backdrop-filter:blur(8px);box-shadow:0 16px 30px rgba(42,36,28,.15);transform:translateY(-12px);opacity:0;pointer-events:none;transition:.28s}
  .nav-links.open{transform:none;opacity:1;pointer-events:auto}
  .nav-links a{width:100%;padding:18px 28px;border-bottom:1px solid var(--line);font-size:1.2rem}
  .nav-cta{margin:10px 28px}
  .nav-toggle{display:flex}
  .about-grid,.join-grid{grid-template-columns:1fr}
  .gain-grid,.cases-grid{grid-template-columns:1fr 1fr}
  .faq-list{grid-template-columns:1fr}
  .step{flex-direction:row}
}
@media(max-width:560px){
  .gain-grid,.cases-grid{grid-template-columns:1fr}
  .section{padding:64px 20px}
  .hero{padding-top:120px}
}