/* 火柴AI官网 - 第二轮视觉/转化增强 2026-08-19 */
:root{--hc-blue:#2563eb;--hc-blue2:#4f46e5;--hc-ink:#0f172a;--hc-text:#475569;--hc-line:#e2e8f0;--hc-soft:#f8fafc;--hc-cyan:#06b6d4}
html{scroll-behavior:smooth}
body{color:var(--hc-ink);background:#fff}
header{backdrop-filter:saturate(150%) blur(14px);-webkit-backdrop-filter:saturate(150%) blur(14px)}
.hc-shell{max-width:1180px;margin:0 auto;padding:0 22px}
.hc-section{padding:82px 0;position:relative;overflow:hidden}
.hc-section-soft{background:linear-gradient(180deg,#f8fbff 0%,#fff 100%)}
.hc-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border:1px solid #dbeafe;border-radius:999px;background:#eff6ff;color:#1d4ed8;font-size:13px;font-weight:700;letter-spacing:.02em}
.hc-title{margin:16px 0 12px;font-size:clamp(30px,4vw,48px);line-height:1.18;font-weight:800;letter-spacing:-.03em;color:#0f172a}
.hc-subtitle{max-width:760px;margin:0 auto;color:#64748b;font-size:17px;line-height:1.85}
.hc-center{text-align:center}
.hc-grid{display:grid;gap:20px}
.hc-grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.hc-grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.hc-card{display:block;height:100%;padding:26px;border:1px solid #e5e7eb;border-radius:22px;background:rgba(255,255,255,.96);box-shadow:0 14px 40px rgba(15,23,42,.055);transition:.25s ease;color:inherit;text-decoration:none!important}
.hc-card:hover{transform:translateY(-5px);border-color:#bfdbfe;box-shadow:0 22px 55px rgba(37,99,235,.12)}
.hc-icon{width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:18px;background:linear-gradient(135deg,#eff6ff,#eef2ff);font-size:22px}
.hc-card h3{font-size:20px;font-weight:800;margin:0 0 10px;color:#0f172a}
.hc-card p{font-size:14px;line-height:1.75;color:#64748b;margin:0}
.hc-card .hc-link{margin-top:18px;display:inline-flex;gap:6px;align-items:center;font-size:14px;font-weight:700;color:#2563eb}
.hc-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:hcstep}
.hc-step{position:relative;padding:26px 22px;border:1px solid #e2e8f0;border-radius:20px;background:#fff}
.hc-step:before{counter-increment:hcstep;content:"0" counter(hcstep);display:block;font-size:12px;font-weight:800;color:#2563eb;margin-bottom:14px}
.hc-step h3{font-size:18px;font-weight:800;margin:0 0 8px}.hc-step p{font-size:14px;line-height:1.7;color:#64748b;margin:0}
.hc-platforms{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:28px}
.hc-pill{padding:9px 14px;border-radius:999px;border:1px solid #e2e8f0;background:#fff;font-size:13px;font-weight:700;color:#334155}
.hc-contact{background:radial-gradient(circle at 10% 20%,rgba(34,211,238,.22),transparent 26%),radial-gradient(circle at 85% 0%,rgba(99,102,241,.24),transparent 30%),linear-gradient(135deg,#0b1220,#111c38 72%,#152451);border-radius:30px;padding:48px;color:#fff;display:grid;grid-template-columns:1.35fr .65fr;gap:30px;align-items:center;box-shadow:0 30px 80px rgba(15,23,42,.18)}
.hc-contact h2{font-size:clamp(28px,4vw,42px);line-height:1.2;margin:0 0 14px;font-weight:800;color:#fff}.hc-contact p{color:#cbd5e1;line-height:1.8;margin:0 0 24px}.hc-contact-actions{display:flex;flex-wrap:wrap;gap:10px}.hc-cta{display:inline-flex!important;align-items:center;justify-content:center;min-height:46px;padding:0 18px;border-radius:12px;font-size:14px;font-weight:800;text-decoration:none!important}.hc-cta-primary{color:#fff!important;background:linear-gradient(135deg,#2563eb,#4f46e5)}.hc-cta-ghost{color:#fff!important;border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.08)}
.hc-contact-meta{border-left:1px solid rgba(255,255,255,.14);padding-left:30px}.hc-contact-meta div{margin:10px 0;color:#e2e8f0;font-size:14px}.hc-contact-meta b{display:block;color:#fff;margin-bottom:2px}
.hc-faq{max-width:900px;margin:28px auto 0}.hc-faq details{border:1px solid #e2e8f0;border-radius:16px;background:#fff;margin:10px 0;padding:0 20px}.hc-faq summary{cursor:pointer;list-style:none;padding:18px 4px;font-weight:800;color:#0f172a}.hc-faq summary::-webkit-details-marker{display:none}.hc-faq details p{padding:0 4px 18px;margin:0;color:#64748b;line-height:1.75;font-size:14px}
.hc-trustbar{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}.hc-trustbar span{font-size:13px;color:#475569;background:#fff;border:1px solid #e2e8f0;border-radius:999px;padding:7px 11px}
.hc-sticky{position:fixed;right:18px;bottom:18px;z-index:9998;display:flex;flex-direction:column;gap:9px}.hc-sticky a,.hc-sticky button{width:48px;height:48px;border:none;border-radius:15px;display:flex;align-items:center;justify-content:center;background:#fff;color:#0f172a;box-shadow:0 12px 35px rgba(15,23,42,.18);font-weight:900;text-decoration:none!important;cursor:pointer}.hc-sticky a:hover,.hc-sticky button:hover{transform:translateY(-2px)}
.hc-wechat-modal{display:none;position:fixed;inset:0;z-index:10000;background:rgba(2,6,23,.58);align-items:center;justify-content:center;padding:20px}.hc-wechat-modal.is-open{display:flex}.hc-wechat-box{width:min(390px,100%);background:#fff;border-radius:24px;padding:26px;text-align:center;box-shadow:0 28px 80px rgba(2,6,23,.3);position:relative}.hc-wechat-close{position:absolute;right:14px;top:12px;border:none;background:transparent;font-size:25px;cursor:pointer;color:#64748b}.hc-wechat-box img{width:180px;height:180px;object-fit:contain;margin:15px auto}.hc-wechat-box h3{margin:0;font-size:22px;font-weight:800}.hc-wechat-box p{color:#64748b;margin:9px 0}.hc-copy{border:0;border-radius:11px;padding:11px 16px;background:#eff6ff;color:#1d4ed8;font-weight:800;cursor:pointer}
/* 统一修饰旧页面 */
.btn,.btn-sm,.module-free-btn{border-radius:12px!important}.marketing-features-item,.features-card,.card{border-radius:18px!important}.footer-sl{transition:.2s}.footer-sl:hover{transform:translateY(-2px)}
@media(max-width:900px){.hc-grid-3,.hc-grid-4,.hc-flow{grid-template-columns:repeat(2,1fr)}.hc-contact{grid-template-columns:1fr;padding:34px 25px}.hc-contact-meta{border-left:0;border-top:1px solid rgba(255,255,255,.14);padding-left:0;padding-top:18px}}
@media(max-width:620px){.hc-section{padding:58px 0}.hc-shell{padding:0 16px}.hc-grid-3,.hc-grid-4,.hc-flow{grid-template-columns:1fr}.hc-title{font-size:31px}.hc-subtitle{font-size:15px}.hc-contact{border-radius:22px}.hc-sticky{right:12px;bottom:12px}.hc-sticky a,.hc-sticky button{width:44px;height:44px;border-radius:14px}}
.hc-page-heading{padding:34px 0 28px;background:linear-gradient(180deg,#f8fbff 0%,#fff 100%);border-bottom:1px solid #eef2f7}
.hc-page-heading h1{margin:0 0 8px;font-size:clamp(26px,3.5vw,40px);line-height:1.25;font-weight:800;letter-spacing:-.025em;color:#0f172a}
.hc-page-heading p{margin:0;max-width:820px;font-size:15px;line-height:1.8;color:#64748b}
@media(max-width:620px){.hc-page-heading{padding:24px 0 20px}.hc-page-heading h1{font-size:27px}}