/* roulang page: index */
:root{
  --red:#E23A4E;--rose:#C21F45;--green:#3F9A63;--gold:#E9A63C;
  --bg:#FFF9F5;--soft:#FDF1EC;--line:#F2DCD5;
  --ink:#2C1E1A;--muted:#7A6A63;
  --grad:linear-gradient(135deg,#E23A4E 0%,#F0653F 55%,#E9A63C 100%);
  --r-lg:24px;--r-md:18px;--r-sm:12px;
  --sh:0 10px 28px rgba(194,31,69,.08);
  --sh-h:0 18px 40px rgba(194,31,69,.16);
}
*{box-sizing:border-box}
body{margin:0;font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;background:var(--bg);color:var(--ink);font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{line-height:1.3}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--red);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.num{font-variant-numeric:tabular-nums}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .25s}
.site-header.scrolled{box-shadow:0 6px 18px rgba(0,0,0,.06)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.logo-mark{width:44px;height:44px;border-radius:14px;background:var(--grad);color:#fff;font-weight:700;font-size:17px;display:flex;align-items:center;justify-content:center;letter-spacing:.5px}
.brand-name{display:block;font-size:19px;font-weight:700;letter-spacing:.5px;line-height:1.2}
.brand-sub{display:block;font-size:11px;color:var(--muted);letter-spacing:.5px}
.main-nav{display:flex;align-items:center;gap:22px;margin-left:auto;font-size:15px}
.main-nav a{color:var(--ink);padding:22px 0;border-bottom:2px solid transparent;transition:color .2s,border-color .2s}
.main-nav a:hover{color:var(--rose);border-bottom-color:rgba(226,58,78,.45)}
.header-right{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.phone-link{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--rose);font-weight:600}
.phone-link svg{width:14px;height:14px}
.nav-toggle{display:none;width:44px;height:44px;border:1.5px solid var(--line);background:#fff;border-radius:var(--r-sm);font-size:19px;color:var(--ink);cursor:pointer;align-items:center;justify-content:center}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 24px;border-radius:999px;font-size:15px;font-weight:600;border:0;cursor:pointer;transition:filter .2s,box-shadow .2s,transform .12s,background .2s}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(226,58,78,.26)}
.btn-primary:hover{filter:brightness(.92);box-shadow:0 12px 26px rgba(226,58,78,.34)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;border:1.5px solid var(--red);color:var(--red)}
.btn-ghost:hover{background:#FDECEC}
.btn-lg{min-height:52px;padding:0 30px;font-size:16px}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}

/* badges */
.badge{display:inline-flex;align-items:center;gap:6px;min-height:26px;padding:2px 10px;border-radius:8px;font-size:12px;font-weight:600;line-height:1.4}
.badge-solid{background:var(--red);color:#fff}
.badge-soft{background:var(--soft);color:var(--rose)}
.badge-gold{background:#fff;border:1px solid var(--gold);color:#B0741A}
.badge-green{background:#EAF5EE;color:#2E7A4B}

/* hero */
.hero{position:relative;padding:52px 0 60px;background:url('/assets/images/8e674e2f594691c2.jpg') center/cover no-repeat}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(255,249,245,.97) 0%,rgba(255,249,245,.94) 48%,rgba(255,249,245,.62) 100%)}
.hero-inner{position:relative;display:grid;grid-template-columns:1.35fr 1fr;gap:44px;align-items:center}
.hero-top{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.hero-avatar{width:64px;height:64px;border-radius:20px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;box-shadow:0 10px 22px rgba(226,58,78,.22)}
.hero-brand{font-size:17px;font-weight:700;letter-spacing:.5px}
.hero-tag{font-size:13px;color:var(--muted)}
h1{font-size:46px;font-weight:800;line-height:1.25;letter-spacing:-.5px}
h1 em{font-style:normal;position:relative;white-space:nowrap}
h1 em::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:10px;border-radius:4px;background:var(--grad);opacity:.32}
.hero-sub{margin-top:14px;font-size:17px;font-weight:600;color:var(--rose)}
.hero-lead{margin-top:14px;max-width:620px;font-size:15px;color:#4A3A34}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.hero-badges{display:flex;gap:8px;margin-top:20px;overflow-x:auto;padding-bottom:2px}
.hero-badges .badge{flex:0 0 auto}
.kpi-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.kpi{background:#fff;border-radius:var(--r-md);padding:18px 16px;box-shadow:var(--sh);border:1px solid #FBEAE4}
.kpi-num{display:block;font-size:26px;font-weight:800;color:var(--red);font-variant-numeric:tabular-nums;line-height:1.2}
.kpi-num span{font-size:13px;font-weight:600;color:var(--muted);margin-left:2px}
.kpi-label{display:block;font-size:13px;color:var(--muted);margin-top:4px}

/* section base */
section{scroll-margin-top:88px}
.sec{padding:64px 0}
.sec-white{background:#fff}
.sec-soft{background:var(--soft)}
.sec-head{margin-bottom:32px;max-width:760px}
.sec-head h2{font-size:30px;font-weight:700;margin-bottom:10px}
.sec-head p{font-size:15px;color:var(--muted)}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.sec-head-row h2{font-size:30px;font-weight:700;margin-bottom:10px}
.sec-head-row p{font-size:15px;color:var(--muted);max-width:640px}
.link-more{font-size:14px;font-weight:600;color:var(--red);white-space:nowrap;border-bottom:1px solid rgba(226,58,78,.35);padding-bottom:2px}
.link-more:hover{color:var(--rose);border-bottom-color:var(--rose)}

/* grid helpers */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}

/* generic card */
.card{background:#fff;border-radius:var(--r-lg);box-shadow:var(--sh);border:1px solid #FBEEE9;transition:transform .25s,box-shadow .25s;overflow:hidden}
.card-hover:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.card-body{padding:18px}

/* selling points */
.feature-card{padding:26px 22px}
.feature-icon{width:40px;height:40px;border-radius:12px;background:var(--grad);display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:16px}
.feature-icon.g{background:linear-gradient(135deg,#3F9A63 0%,#65B981 100%)}
.feature-icon.y{background:linear-gradient(135deg,#E9A63C 0%,#F3C46F 100%)}
.feature-icon svg{width:20px;height:20px}
.feature-card h3{font-size:19px;font-weight:600;margin-bottom:8px}
.feature-card p{font-size:14px;color:var(--muted);min-height:66px}
.feature-card .badge{margin-top:14px}

/* ladder */
.ladder{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.ladder-item{background:#fff;border-radius:var(--r-md);padding:22px 18px;border:1px solid #FBEEE9;box-shadow:var(--sh);position:relative}
.ladder-item b{display:block;font-size:16px;font-weight:700;margin-bottom:6px}
.ladder-item .qty{font-size:13px;color:var(--muted);display:block;margin-bottom:10px}
.ladder-item .rate{font-size:28px;font-weight:800;color:var(--red);font-variant-numeric:tabular-nums;line-height:1.1}
.ladder-item .rate small{font-size:13px;font-weight:600;color:var(--muted);margin-left:4px}
.ladder-item p{font-size:13px;color:var(--muted);margin-top:8px}

/* plans */
.plan{padding:26px 22px;display:flex;flex-direction:column}
.plan h3{font-size:20px;font-weight:700}
.plan .plan-tag{font-size:13px;color:var(--muted);margin-top:4px}
.plan ul{margin:16px 0 18px;display:grid;gap:8px}
.plan li{font-size:14px;color:#4A3A34;padding-left:18px;position:relative}
.plan li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--green);opacity:.8}
.plan-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:16px;border-top:1px dashed var(--line)}
.plan-index{font-size:20px;font-weight:800;color:var(--gold);font-variant-numeric:tabular-nums}
.plan-index small{font-size:12px;color:var(--muted);font-weight:600;margin-left:2px}

/* promo strip */
.promo{border-radius:var(--r-lg);background:linear-gradient(120deg,#FFF3EC 0%,#FDECEC 100%);padding:32px;display:flex;align-items:center;justify-content:space-between;gap:24px;border:1px solid #FADFD6}
.promo h2{font-size:26px;font-weight:700;margin-bottom:8px}
.promo p{font-size:14px;color:#5A4640;max-width:640px}

/* product cards */
.p-card{display:flex;flex-direction:column}
.p-thumb{position:relative;aspect-ratio:4/3;overflow:hidden;border-radius:var(--r-lg) var(--r-lg) 0 0;background:linear-gradient(135deg,#FDE6DF 0%,#FBF0E2 100%)}
.p-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.p-card:hover .p-thumb img{transform:scale(1.03)}
.p-thumb .badge{position:absolute;top:10px;left:10px}
.p-card h3{font-size:16px;font-weight:600;margin-bottom:6px}
.p-spec{font-size:13px;color:var(--muted)}
.p-foot{display:flex;align-items:center;justify-content:space-between;margin-top:12px;padding-top:12px;border-top:1px solid #F7E7E1}
.p-index{font-size:16px;font-weight:800;color:var(--gold);font-variant-numeric:tabular-nums}
.p-index small{font-size:12px;color:var(--muted);font-weight:600;margin-left:3px}

/* spec table */
.table-wrap{background:#fff;border-radius:var(--r-lg);box-shadow:var(--sh);border:1px solid #FBEEE9;overflow:hidden}
table{width:100%;border-collapse:collapse}
th,td{padding:14px 18px;text-align:left;font-size:14px;border-bottom:1px solid #F7E7E1}
th{background:#FFF3EC;font-weight:600;color:var(--rose);font-size:13px;letter-spacing:.3px}
tbody tr:nth-child(even){background:var(--soft)}
tbody tr:last-child td{border-bottom:0}
td.strong{font-weight:600}

/* compare */
.cmp{background:#fff;border-radius:var(--r-lg);box-shadow:var(--sh);border:1px solid #FBEEE9;overflow:hidden}
.cmp-row{display:grid;grid-template-columns:1.1fr 1fr 1.1fr;align-items:stretch}
.cmp-row>div{padding:16px 18px;font-size:14px;border-bottom:1px solid #F7E7E1}
.cmp-head>div{background:#FFF3EC;font-weight:600;font-size:13px;color:var(--rose)}
.cmp-row>div.bad{color:#9A8B85}
.cmp-row>div.good{background:#EAF5EE;color:#2E7A4B;font-weight:600;display:flex;align-items:center;gap:8px}
.cmp-row>div.good::before{content:"✓";font-size:13px;color:var(--green);font-weight:700}
.cmp-row:last-child>div{border-bottom:0}

/* scene */
.scene{padding:0}
.scene:nth-child(2),.scene:nth-child(4){transform:translateY(16px)}
.scene .p-thumb{aspect-ratio:4/3}
.scene-body{padding:18px}
.scene-body h3{font-size:17px;font-weight:600;margin-bottom:8px}
.scene-body p{font-size:14px;color:var(--muted);min-height:66px}
.scene-meta{display:flex;gap:14px;margin-top:12px;font-size:12px;color:var(--rose);background:var(--soft);border-radius:8px;padding:8px 10px;justify-content:space-between;font-variant-numeric:tabular-nums}

/* testimonials */
.trust{display:grid;grid-template-columns:5fr 7fr;gap:24px;align-items:start}
.trust-stats{display:grid;gap:14px}
.stat{background:#fff;border-radius:var(--r-md);box-shadow:var(--sh);padding:20px;border:1px solid #FBEEE9}
.stat b{display:block;font-size:28px;font-weight:800;color:var(--rose);font-variant-numeric:tabular-nums;line-height:1.2}
.stat span{font-size:13px;color:var(--muted)}
.quote{background:#fff;border-radius:var(--r-md);box-shadow:var(--sh);padding:20px;border:1px solid #FBEEE9;display:flex;gap:14px}
.quote+.quote{margin-top:14px}
.avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#F0653F 0%,#E9A63C 100%);color:#fff;font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.quote-name{font-size:14px;font-weight:600}
.quote-role{font-size:12px;color:var(--muted)}
.quote p{font-size:14px;color:#4A3A34;margin-top:6px}
.stars{color:var(--gold);font-size:13px;letter-spacing:2px;margin-top:6px;display:block}

/* guarantee */
.guarantee{background:var(--soft);border-radius:var(--r-lg);padding:28px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.g-item{display:flex;gap:12px;align-items:flex-start}
.g-item svg{width:22px;height:22px;color:var(--red);flex:0 0 auto;margin-top:3px}
.g-item b{display:block;font-size:14px;font-weight:700}
.g-item span{font-size:13px;color:var(--muted)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.step{position:relative;padding-top:8px}
.step-dot{width:40px;height:40px;border-radius:50%;background:var(--grad);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:16px;margin-bottom:14px}
.step h3{font-size:17px;font-weight:600;margin-bottom:6px}
.step p{font-size:14px;color:var(--muted)}
.step::after{content:"";position:absolute;top:28px;left:56px;right:-24px;border-top:2px dashed #F0CEC4}
.step:last-child::after{display:none}

/* news */
.news-card .p-thumb{aspect-ratio:16/9}
.news-card h3{font-size:16px;font-weight:600;line-height:1.5;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--muted)}

/* faq */
.faq-list{display:grid;gap:14px;max-width:900px}
details.faq{background:#fff;border-radius:var(--r-md);box-shadow:var(--sh);border:1px solid #FBEEE9;overflow:hidden}
details.faq summary{list-style:none;cursor:pointer;padding:18px 22px;font-size:16px;font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";font-size:20px;color:var(--red);font-weight:700;transition:transform .2s;line-height:1}
details.faq[open] summary::after{content:"−"}
details.faq .faq-a{padding:0 22px 20px;font-size:15px;color:#4A3A34}
.faq-foot{margin-top:18px;font-size:14px;color:var(--muted)}
.faq-foot a{color:var(--red);font-weight:600;border-bottom:1px solid rgba(226,58,78,.35)}

/* final cta */
.final{background:linear-gradient(180deg,#FFF9F5 0%,#FDECEC 100%);padding:72px 0;text-align:center}
.final h2{font-size:32px;font-weight:800;margin-bottom:12px}
.final p{font-size:15px;color:#5A4640;max-width:680px;margin:0 auto}
.final .hero-actions{justify-content:center}

/* float cta */
.float-cta{position:fixed;right:24px;bottom:24px;width:280px;background:#fff;border-radius:var(--r-md);box-shadow:0 16px 40px rgba(194,31,69,.18);border:1px solid #FBEEE9;padding:14px;z-index:40;opacity:0;visibility:hidden;transform:translateY(14px);transition:opacity .3s,transform .3s,visibility .3s;display:flex;gap:12px;align-items:center}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta img{width:56px;height:56px;border-radius:12px;object-fit:cover;flex:0 0 auto}
.float-cta .fc-text{font-size:13px;line-height:1.5;color:#4A3A34;font-weight:600}
.float-cta .btn{width:100%;min-height:38px;font-size:13px;padding:0 14px;margin-top:6px}

/* footer */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px}
.footer-grid h4{font-size:15px;font-weight:600;margin-bottom:14px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.footer-brand .logo-mark{width:40px;height:40px;border-radius:12px;font-size:15px}
.footer-brand b{font-size:17px;font-weight:700}
.footer-grid p{font-size:13px;color:var(--muted);line-height:1.9}
.footer-grid li{font-size:14px;line-height:2.2;color:#5A4640}
.footer-grid li a:hover{color:var(--red)}
.footer-bottom{margin-top:40px;border-top:1px solid var(--line);padding:18px 0 22px;font-size:12px;color:#8A7972;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center}
.dot4{display:inline-flex;gap:5px;vertical-align:middle;margin-right:6px}
.dot4 i{width:7px;height:7px;border-radius:50%;display:block}
.dot4 i:nth-child(1){background:var(--red)}
.dot4 i:nth-child(2){background:var(--rose)}
.dot4 i:nth-child(3){background:var(--green)}
.dot4 i:nth-child(4){background:var(--gold)}

/* responsive */
@media (max-width:1024px){
  .header-inner{height:64px;gap:16px}
  .main-nav{position:absolute;top:100%;left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:0;background:#fff;padding:8px 20px 20px;box-shadow:0 20px 40px rgba(194,31,69,.14);margin-left:0}
  .main-nav.open{display:flex}
  .main-nav a{padding:14px 4px;min-height:52px;display:flex;align-items:center;border-bottom:1px solid var(--line)}
  .main-nav a:hover{border-bottom-color:var(--line)}
  .nav-toggle{display:inline-flex}
  .header-right .btn{display:none}
  h1{font-size:36px}
  .hero{padding:40px 0 48px}
  .hero-inner{grid-template-columns:1fr;gap:32px}
  .sec{padding:52px 0}
  .sec-head h2,.sec-head-row h2{font-size:26px}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .ladder{grid-template-columns:repeat(2,1fr)}
  .guarantee{grid-template-columns:repeat(2,1fr);padding:24px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step::after{display:none}
  .trust{grid-template-columns:1fr}
  .trust-stats{grid-template-columns:repeat(3,1fr);display:grid}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .scene:nth-child(2),.scene:nth-child(4){transform:none}
  .float-cta{left:0;right:0;bottom:0;width:100%;border-radius:0;border:0;border-top:1px solid var(--line);padding:8px 14px;gap:10px;justify-content:space-between;box-shadow:0 -8px 24px rgba(194,31,69,.12)}
  .float-cta img{display:none}
  .float-cta .fc-text{font-size:13px;flex:1}
  .float-cta .btn{width:auto;margin-top:0;min-height:44px;padding:0 18px;flex:0 0 auto}
  body{padding-bottom:72px}
}
@media (max-width:768px){
  .sec{padding:44px 0}
  h1{font-size:31px}
  .hero-sub{font-size:16px}
  .grid-3,.grid-4{grid-template-columns:1fr}
  .kpi-grid{grid-template-columns:1fr 1fr}
  .promo{flex-direction:column;align-items:flex-start;padding:24px}
  .sec-head-row{flex-direction:column;align-items:flex-start;gap:10px}
  .cmp-row{grid-template-columns:1fr 1fr;gap:0}
  .cmp-row>div:first-child{grid-column:1 / -1;font-weight:600;background:#FFF7F2;border-bottom:0;padding-bottom:6px}
  .final h2{font-size:26px}
  .footer-grid{grid-template-columns:1fr}
  .trust-stats{grid-template-columns:1fr 1fr}
}
@media (max-width:520px){
  .brand-sub{display:none}
  .brand-name{font-size:17px}
  .phone-link{display:none}
  h1{font-size:28px}
  .hero-actions .btn{width:100%}
  .grid-4 .p-card{flex-direction:row;align-items:stretch}
  .grid-4 .p-thumb{width:96px;height:96px;flex:0 0 96px;aspect-ratio:auto;border-radius:var(--r-md) 0 0 var(--r-md)}
  .grid-4 .p-thumb .badge{display:none}
  .grid-4 .card-body{padding:12px;flex:1;display:flex;flex-direction:column;justify-content:center}
  .grid-4 .p-foot{margin-top:8px;padding-top:8px}
  .ladder,.guarantee,.steps,.trust-stats{grid-template-columns:1fr}
  .kpi-grid{grid-template-columns:1fr 1fr}
  .promo{padding:20px}
  .final{padding:52px 0}
  .float-cta .fc-text{display:none}
  .float-cta .btn{flex:1}
  td,th{padding:12px 12px;font-size:13px}
}