/* 隐云 yinyun365.cyou — 浅灰底 + 暗紫 */
:root{
  --bg:#F5F4F7;
  --bg-alt:#EDEAF3;
  --panel:#FFFFFF;
  --border:#DCD5EA;
  --text:#241B3A;
  --text-dim:#6B6280;
  --accent:#5B21B6;
  --accent-light:#7C3AED;
  --accent-dark:#4C1D95;
  --promo:#DB2777;
  --radius:14px;
  --max:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
ul{list-style:none}

.site-nav{background:var(--panel);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
.nav-inner{max-width:var(--max);margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:1.15rem;color:var(--accent-dark)}
.nav-links{display:flex;gap:28px;font-size:.95rem;font-weight:600}
.nav-links a:hover{color:var(--accent)}
.nav-actions{display:flex;align-items:center;gap:14px}
.btn{display:inline-block;padding:10px 22px;border-radius:999px;font-weight:700;font-size:.92rem;transition:transform .15s,box-shadow .15s}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(91,33,182,.25)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(91,33,182,.32)}
.btn-ghost{border:1.5px solid var(--border);color:var(--text)}
#nav-toggle{display:none}
.mobile-menu{display:none}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:6px}
.hamburger span{width:24px;height:2.5px;background:var(--text);border-radius:2px}

.hero{padding:64px 0 56px;background:linear-gradient(180deg,var(--bg-alt),var(--bg))}
.hero-inner{max-width:760px;margin:0 auto;text-align:center}
.promo-tag{display:inline-flex;align-items:center;gap:8px;background:#FCE7F3;color:#9D174D;border:1px solid #FBCFE8;padding:7px 16px;border-radius:999px;font-size:.85rem;font-weight:700;margin-bottom:22px}
.hero h1{font-size:2.5rem;font-weight:800;letter-spacing:-.02em;margin-bottom:18px;color:var(--accent-dark)}
.hero .sub{font-size:1.08rem;color:var(--text-dim);margin-bottom:32px}
.hero-ctas{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn-lg{padding:14px 30px;font-size:1rem}

.advantages{padding:56px 0 40px}
.section-head{text-align:center;max-width:640px;margin:0 auto 40px}
.section-head h2{font-size:1.85rem;font-weight:800;margin-bottom:12px}
.section-head p{color:var(--text-dim)}
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:36px}
.adv-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:0 2px 10px rgba(36,27,58,.04)}
.adv-card svg{width:34px;height:34px;color:var(--accent);margin-bottom:14px}
.adv-card h3{font-size:1.08rem;margin-bottom:8px}
.adv-card p{color:var(--text-dim);font-size:.92rem}
.pill-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.pill{background:var(--bg-alt);border:1px solid var(--border);padding:8px 16px;border-radius:999px;font-size:.86rem;font-weight:600;color:var(--accent-dark)}

/* 适用场景 */
.persona-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.persona-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:26px;text-align:center;box-shadow:0 2px 10px rgba(36,27,58,.04)}
.persona-card .badge-circle{width:52px;height:52px;border-radius:50%;background:var(--bg-alt);display:flex;align-items:center;justify-content:center;margin:0 auto 14px;font-size:1.4rem}
.persona-card h3{font-size:1.02rem;margin-bottom:8px}
.persona-card p{color:var(--text-dim);font-size:.88rem}

.pricing{padding:56px 0;background:var(--bg-alt)}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:20px}
.price-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:24px;position:relative}
.price-card.featured{border:2px solid var(--accent);box-shadow:0 10px 30px rgba(91,33,182,.14)}
.price-card .badge{position:absolute;top:-11px;right:20px;background:var(--accent);color:#fff;font-size:.72rem;font-weight:700;padding:3px 12px;border-radius:999px}
.price-card h3{font-size:1.05rem;margin-bottom:6px}
.price-card .old{color:var(--text-dim);text-decoration:line-through;font-size:.85rem}
.price-card .now{font-size:1.7rem;font-weight:800;color:var(--accent-dark);margin:4px 0}
.price-card .now span{font-size:.85rem;font-weight:600;color:var(--text-dim)}
.price-card ul{margin:14px 0;font-size:.88rem;color:var(--text-dim)}
.price-card ul li{padding:4px 0;padding-left:20px;position:relative}
.price-card ul li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:700}
.unlimited-row{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.discount-note{text-align:center;margin-top:24px;font-size:.88rem;color:var(--text-dim);background:var(--panel);border:1px dashed var(--border);border-radius:10px;padding:14px}
.discount-note strong{color:var(--promo)}

.why{padding:60px 0}
.why-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:32px;margin-bottom:26px;box-shadow:0 2px 10px rgba(36,27,58,.04)}
.why-card h3{font-size:1.3rem;margin-bottom:8px}
.why-card>p{color:var(--text-dim);margin-bottom:24px}

/* module: 极简定义卡 */
.definition-card{border-left:4px solid var(--accent);background:var(--bg-alt);border-radius:0 10px 10px 0;padding:22px 26px;margin-bottom:20px}
.definition-card p{font-size:1.15rem;font-weight:700;color:var(--accent-dark);line-height:1.6}
.definition-support{display:flex;flex-direction:column;gap:10px}
.definition-support .item{display:flex;gap:10px;font-size:.9rem;color:var(--text-dim)}
.definition-support .item b{color:var(--text);flex:none;min-width:70px}

/* module: 使用守则清单（字母编号） */
.rule-list{counter-reset:rule-counter}
.rule-item{display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--border)}
.rule-item:last-child{border-bottom:none}
.rule-item::before{counter-increment:rule-counter;content:counter(rule-counter,lower-alpha) ".";font-weight:800;color:var(--accent);font-size:1rem;flex:none;width:24px}
.rule-item h4{font-size:.95rem;margin-bottom:3px}
.rule-item p{font-size:.86rem;color:var(--text-dim)}

.cta-band{background:var(--accent-dark);color:#fff;padding:48px 0;text-align:center}
.cta-band h2{font-size:1.7rem;margin-bottom:14px}
.cta-band p{opacity:.85;margin-bottom:26px}
.cta-band .btn-primary{background:var(--promo)}

.reviews{padding:56px 0;overflow:hidden}
.marquee-track{display:flex;gap:18px;width:max-content;animation:scroll 42s linear infinite}
.marquee-track:hover{animation-play-state:paused}
@keyframes scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.review-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:20px;width:290px;flex:none;box-shadow:0 2px 10px rgba(36,27,58,.04)}
.review-card .stars{color:var(--promo);margin-bottom:8px;font-size:.9rem}
.review-card p{font-size:.88rem;color:var(--text-dim);margin-bottom:12px}
.review-card .who{font-size:.82rem;font-weight:700;color:var(--text)}
.disclaimer{text-align:center;font-size:.78rem;color:var(--text-dim);margin-top:18px}

.faq{padding:56px 0;background:var(--bg-alt)}
.faq-list{max-width:760px;margin:0 auto}
details{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:16px 20px;margin-bottom:12px}
summary{cursor:pointer;font-weight:700;font-size:.98rem;list-style:none}
summary::-webkit-details-marker{display:none}
details p{margin-top:10px;color:var(--text-dim);font-size:.9rem}

footer{background:var(--accent-dark);color:#e3d8f7;padding:44px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;margin-bottom:24px}
.footer-grid h4{color:#fff;margin-bottom:12px;font-size:.95rem}
.footer-grid p,.footer-grid a{font-size:.85rem;color:#d3c2ec}
.footer-grid ul li{margin-bottom:8px}
.footer-seo{font-size:.8rem;color:#b7a2d9;border-top:1px solid rgba(255,255,255,.15);padding-top:18px;margin-bottom:14px}
.friend-links{font-size:.82rem;color:#b7a2d9;margin-bottom:14px}
.friend-links a{margin-right:12px;color:#d3c2ec}
.friend-links a:hover{color:#fff}
.copyright{font-size:.78rem;color:#9c85c2}

.page-hero{background:var(--bg-alt);padding:36px 0;border-bottom:1px solid var(--border)}
.breadcrumb{font-size:.85rem;color:var(--text-dim);margin-bottom:10px}
.page-hero h1{font-size:1.8rem}
.content-block{max-width:760px;margin:0 auto;padding:48px 20px}
.content-block h2{font-size:1.2rem;margin:28px 0 10px}
.content-block h2:first-child{margin-top:0}
.content-block p{color:var(--text-dim);margin-bottom:10px}
.content-block ul{margin:10px 0 10px 4px}
.content-block ul li{padding:5px 0 5px 20px;position:relative;color:var(--text-dim)}
.content-block ul li::before{content:"—";position:absolute;left:0;color:var(--accent)}
.sitemap-list li{padding:14px 0;border-bottom:1px solid var(--border)}
.sitemap-list a{font-weight:700;color:var(--accent-dark)}
.sitemap-list p{font-size:.85rem;color:var(--text-dim);margin-top:4px}

@media (max-width:900px){
  .adv-grid{grid-template-columns:1fr}
  .persona-grid{grid-template-columns:1fr}
  .pricing-grid{grid-template-columns:1fr 1fr}
  .unlimited-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  .nav-links{display:none}
  .hamburger{display:flex}
  .mobile-menu{display:none;position:absolute;top:100%;left:0;right:0;background:var(--panel);border-bottom:1px solid var(--border);flex-direction:column;padding:16px 20px;gap:14px}
  #nav-toggle:checked ~ .mobile-menu{display:flex}
  .hero h1{font-size:1.9rem}
  .pricing-grid{grid-template-columns:1fr}
}

.content-block ol.step-list { padding-left: 0; list-style: none; counter-reset: step; margin: 10px 0 20px; }
.content-block ol.step-list li { position: relative; padding-left: 34px; margin-bottom: 10px; counter-increment: step; }
.content-block ol.step-list li::before { content: counter(step); position: absolute; left: 0; top: 0; width: 22px; height: 22px; border-radius: 50%; background: var(--accent); color: #fff; font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center; }