*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei",sans-serif;color:#222;background:#fff;line-height:1.7}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
.wrap{width:min(1160px,calc(100% - 40px));margin:0 auto}
section{scroll-margin-top:76px}

.topbar{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid #e8e8e8;box-shadow:0 2px 12px rgba(0,0,0,.04)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px}
.brand img{width:40px;height:40px;border-radius:10px}
.nav{display:flex;gap:22px;align-items:center}
.nav a{color:#555;font-size:14px}
.nav a:hover{color:#000}
.nav-cta{background:#111;color:#fff;padding:10px 18px;border-radius:8px;font-size:13px;font-weight:700}
.menu-btn{display:none;border:1px solid #ddd;background:#fff;border-radius:8px;padding:8px 12px;cursor:pointer}
.mobile-menu{display:none;flex-direction:column;padding:12px 20px 18px;border-top:1px solid #eee;background:#fff}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:10px 0;border-bottom:1px solid #f2f2f2;color:#444}

.hero{padding:64px 0 48px;background:linear-gradient(180deg,#fff,#f6f7fb)}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.tag{display:inline-block;padding:6px 12px;border-radius:999px;background:#fff3e0;color:#e65100;font-size:12px;font-weight:700;margin-bottom:16px;border:1px solid #ffe0b2}
.hero h1{font-size:clamp(30px,4vw,44px);line-height:1.2;margin:0 0 16px}
.hero h1 span{color:#e65100}
.hero-lead{color:#444;font-size:17px;margin-bottom:24px}
.stats{display:flex;gap:24px;flex-wrap:wrap;margin-bottom:28px}
.stats div strong{display:block;font-size:22px;color:#111}
.stats div span{font-size:12px;color:#888}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 22px;border-radius:10px;font-weight:700;font-size:14px}
.btn-dark{background:#111;color:#fff}
.btn-line{border:1px solid #ccc;color:#333;background:#fff}
.btn-line:hover{border-color:#e65100;color:#e65100}

.phone-stage{position:relative;height:480px}
.phone{position:absolute;border-radius:28px;overflow:hidden;border:6px solid #111;box-shadow:0 24px 60px rgba(0,0,0,.15);background:#000}
.phone img{width:100%;height:100%;object-fit:cover}
.phone-a{width:210px;height:430px;right:20px;top:10px;transform:rotate(6deg);z-index:1;opacity:.85}
.phone-b{width:230px;height:470px;left:60px;top:0;transform:rotate(-4deg);z-index:2}
.badge-float{position:absolute;z-index:3;background:#fff;border:1px solid #eee;border-radius:12px;padding:10px 14px;font-size:12px;box-shadow:0 8px 24px rgba(0,0,0,.08)}
.badge-float strong{display:block;font-size:16px;color:#e65100}
.bf1{right:0;top:60px}.bf2{left:0;bottom:40px}

.block{padding:72px 0}
.block.alt{background:#f8f9fc}
.head{margin-bottom:36px}
.head .no{color:#e65100;font-size:11px;font-weight:800;letter-spacing:.14em}
.head h2{margin:8px 0 12px;font-size:clamp(24px,3vw,34px)}
.head p{color:#666;max-width:560px;margin:0}

.showcase{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.showcase figure{margin:0;border:1px solid #ececec;border-radius:14px;overflow:hidden;background:#fff;transition:transform .25s}
.showcase figure:hover{transform:translateY(-4px)}
.showcase img{aspect-ratio:9/16;object-fit:cover;width:100%}
.showcase figcaption{padding:14px;font-size:13px;color:#555}
.showcase figcaption strong{display:block;color:#111;margin-bottom:4px}

.grid6{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{padding:26px;border:1px solid #ececec;border-radius:14px;background:#fff}
.card .idx{font:800 28px/1 Arial;color:#eee;margin-bottom:10px}
.card h3{margin:0 0 10px;font-size:17px}
.card p{margin:0;color:#555;font-size:14px}
.card a{color:#e65100;text-decoration:underline}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative}
.steps::before{content:"";position:absolute;top:36px;left:10%;right:10%;height:2px;background:linear-gradient(90deg,#e65100,#ff9800);z-index:0}
.step{text-align:center;position:relative;z-index:1}
.step-num{width:72px;height:72px;margin:0 auto 16px;border-radius:50%;background:#fff;border:2px solid #e65100;display:grid;place-items:center;font-weight:800;color:#e65100;font-size:20px}
.step h3{margin:0 0 8px;font-size:16px}
.step p{margin:0;color:#666;font-size:14px}

.prose-block{max-width:760px;margin:28px auto 0;color:#555;font-size:15px}
.prose-block p{margin:0 0 14px}
.link-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.chip{display:inline-block;padding:8px 16px;border:1px solid #ddd;border-radius:999px;font-size:13px;color:#444;background:#fff}
.chip:hover{border-color:#e65100;color:#e65100}

.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.review{padding:22px;border:1px solid #ececec;border-radius:12px;background:#fff;font-size:14px;color:#555}
.review cite{display:block;margin-top:14px;font-style:normal;color:#999;font-size:12px}

.faq{border:1px solid #ececec;border-radius:14px;overflow:hidden;background:#fff}
.faq details{border-bottom:1px solid #ececec}
.faq details:last-child{border-bottom:none}
.faq summary{padding:18px 20px;cursor:pointer;font-weight:600;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq p{margin:0;padding:0 20px 18px;color:#555;font-size:14px}
.faq a{color:#e65100}

.prose{padding:48px 0;max-width:760px;margin:0 auto}
.prose h1{font-size:30px;margin-bottom:18px}
.prose h2{margin:28px 0 10px;font-size:20px}
.prose p,.prose li{color:#444}
.prose img{border:1px solid #ececec;border-radius:8px;margin:16px 0}
.related{margin-top:32px;padding-top:20px;border-top:1px solid #eee}
.related a{display:inline-block;margin-right:16px;color:#e65100}

.footer{padding:40px 0;background:#111;color:#aaa;font-size:13px}
.footer a{color:#aaa;margin-right:16px}
.footer a:hover{color:#fff}

.error-page{min-height:70vh;display:grid;place-items:center;text-align:center}
.error-page h1{font-size:48px;margin:0 0 12px}

@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr}
  .phone-stage{height:420px;margin-top:20px}
  .showcase,.grid6,.steps,.reviews{grid-template-columns:1fr 1fr}
  .menu-btn{display:inline-flex}.nav{display:none}
}
@media(max-width:560px){
  .showcase,.grid6,.steps,.reviews{grid-template-columns:1fr}
  .phone-a{right:10px}.phone-b{left:20px}
}