/* roulang page: index */
:root{
  --c-primary:#0E7A63;
  --c-primary-dark:#0B6250;
  --c-primary-50:#E6F2EE;
  --c-primary-25:#F1F7F4;
  --c-accent:#F0803C;
  --c-accent-hover:#D96A28;
  --c-accent-50:#FDEFE5;
  --t-strong:#17211F;
  --t-body:#3A4644;
  --t-muted:#6B7876;
  --t-disabled:#A9B1AF;
  --bg:#F7F6F1;
  --bg-alt:#F1F5F2;
  --card:#FFFFFF;
  --border:#E2E4DF;
  --ok:#2E9E6B;
  --warn:#E9A23B;
  --err:#D9534F;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-hero:24px;
  --sh-1:0 1px 2px rgba(23,33,31,.04),0 8px 24px rgba(23,33,31,.06);
  --sh-2:0 12px 32px rgba(14,122,99,.12);
  --container:1200px;
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--sans);font-size:16px;line-height:1.9;color:var(--t-body);
  background:var(--bg);letter-spacing:.01em;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--t-strong);font-weight:700;letter-spacing:-.01em;line-height:1.34}
h1{font-size:clamp(28px,4.6vw,44px);line-height:1.28}
h2{font-size:clamp(22px,3vw,32px)}
h3{font-size:20px;line-height:1.4}
p{margin:0}
img{display:block;max-width:100%;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-primary-dark)}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.section{padding:88px 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--t-muted);font-size:15px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-primary);background:var(--c-primary-50);border-radius:999px;padding:6px 14px;margin-bottom:16px}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--c-primary)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;border-radius:var(--r-btn);font-size:16px;font-weight:600;line-height:1;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;white-space:nowrap}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px rgba(240,128,60,.24)}
.btn-accent:hover{background:var(--c-accent-hover);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(240,128,60,.32)}
.btn-accent:active{transform:translateY(0);box-shadow:0 6px 14px rgba(240,128,60,.24)}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ghost{background:#fff;color:var(--c-primary);border:1.5px solid var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-50);color:var(--c-primary-dark)}
.btn-lg{padding:15px 28px;font-size:17px}
.btn-sm{padding:10px 16px;font-size:14px}
.btn-block{width:100%}
.btn-link{color:var(--c-primary);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px}
.btn-link::after{content:"→";transition:transform .18s ease}
.btn-link:hover::after{transform:translateX(4px)}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:90;background:rgba(247,246,241,.9);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:background .22s ease,box-shadow .22s ease,border-color .22s ease}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--border);box-shadow:0 6px 22px rgba(23,33,31,.07)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;color:var(--t-strong);font-weight:700;font-size:17px}
.brand:hover{color:var(--c-primary)}
.brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;background:linear-gradient(135deg,#12907A,#0B6250);color:#fff;display:grid;place-items:center;font-size:16px;font-weight:700}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:12px}
.nav-link{position:relative;font-size:15px;font-weight:600;color:var(--t-body);padding:6px 2px}
.nav-link::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;border-radius:2px;background:var(--c-primary);transition:right .2s ease}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{right:0}
.nav-link.active{color:var(--c-primary)}
.nav-link.active::after{right:0}
.nav-pill{background:var(--c-primary-50);color:var(--c-primary);border-radius:999px;padding:8px 16px}
.nav-pill::after{display:none}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--border);border-radius:12px;background:#fff;align-items:center;justify-content:center}
.nav-toggle i{display:block;width:18px;height:2px;border-radius:2px;background:var(--t-strong);position:relative}
.nav-toggle i::before,.nav-toggle i::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--t-strong)}
.nav-toggle i::before{top:-6px}
.nav-toggle i::after{top:6px}
.mobile-drawer{position:fixed;inset:0;z-index:120;background:#fff;transform:translateY(-100%);transition:transform .28s ease;display:flex;flex-direction:column;padding:20px 20px 0;overflow-y:auto}
body.drawer-open .mobile-drawer{transform:translateY(0)}
body.drawer-open{overflow:hidden}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--border);font-size:20px;color:var(--t-body);background:#fff}
.drawer-nav a{display:block;padding:16px 4px;font-size:17px;font-weight:600;color:var(--t-strong);border-bottom:1px solid var(--border)}
.drawer-nav a.active{color:var(--c-primary)}
.drawer-foot{margin-top:auto;position:sticky;bottom:0;background:#fff;padding:16px 0 24px;border-top:1px solid var(--border)}

/* ---------- Hero ---------- */
.hero{padding:64px 0 72px;background:linear-gradient(180deg,#FBFBF8 0%,var(--bg) 100%);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-copy h1{margin-bottom:18px}
.hero-sub{font-size:18px;color:var(--t-body);margin-bottom:28px;max-width:32em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px}
.trust-row{display:flex;flex-wrap:wrap;gap:32px;padding-top:24px;border-top:1px dashed var(--border)}
.trust-row li{display:flex;flex-direction:column;gap:2px}
.trust-row .t-label{font-size:13px;color:var(--t-muted)}
.trust-row .t-value{font-size:19px;font-weight:700;color:var(--t-strong);font-variant-numeric:tabular-nums}
.hero-visual{position:relative;border-radius:var(--r-hero);overflow:hidden;min-height:420px;box-shadow:var(--sh-1)}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(140deg,rgba(11,98,80,.72),rgba(23,33,31,.35))}
.device-frame{position:relative;z-index:2;width:62%;margin:38px auto;border-radius:20px;overflow:hidden;border:6px solid rgba(255,255,255,.85);box-shadow:0 18px 40px rgba(0,0,0,.25);background:#fff}
.device-frame img{width:100%;aspect-ratio:3/4;object-fit:cover}
.float-card{position:absolute;z-index:3;right:18px;bottom:18px;background:#fff;border-radius:14px;padding:14px 18px;box-shadow:0 12px 30px rgba(0,0,0,.18);display:flex;flex-direction:column;gap:2px;min-width:150px}
.float-card strong{font-size:24px;color:var(--t-strong);line-height:1.1;font-variant-numeric:tabular-nums}
.float-card span{font-size:13px;color:var(--t-muted)}
.float-card em{font-size:13px;font-style:normal;color:var(--c-primary);font-weight:600;margin-top:6px}

/* ---------- 价值条 ---------- */
.value-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.value-item{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:24px;transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease}
.value-item:hover{border-color:var(--c-primary);box-shadow:var(--sh-2);transform:translateY(-2px)}
.value-item .num{display:inline-block;font-size:13px;font-weight:700;color:var(--c-accent);background:var(--c-accent-50);border-radius:999px;padding:4px 10px;margin-bottom:14px;font-variant-numeric:tabular-nums}
.value-item h3{font-size:18px;margin-bottom:8px}
.value-item p{font-size:14px;color:var(--t-muted);line-height:1.75}

/* ---------- 安装步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step-card{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:28px 24px 24px;overflow:hidden}
.step-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--c-primary);opacity:.85}
.step-card .step-no{font-size:34px;font-weight:700;color:var(--c-primary-50);line-height:1;font-variant-numeric:tabular-nums;margin-bottom:12px}
.step-card h3{font-size:19px;margin-bottom:10px}
.step-card p{font-size:14.5px;color:var(--t-muted);line-height:1.8}
.step-card .step-tip{display:inline-block;margin-top:14px;font-size:13px;color:var(--c-primary);background:var(--c-primary-25);border-radius:8px;padding:6px 10px}

/* ---------- 截图轮播 ---------- */
.carousel-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:24px}
.carousel-nav{display:flex;gap:10px}
.carousel-nav button{width:40px;height:40px;border-radius:50%;background:#fff;border:1px solid var(--border);color:var(--t-strong);font-size:16px;display:grid;place-items:center;transition:border-color .18s ease,color .18s ease,box-shadow .18s ease}
.carousel-nav button:hover{border-color:var(--c-primary);color:var(--c-primary);box-shadow:var(--sh-1)}
.shot-track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 2px 18px;scrollbar-width:none}
.shot-track::-webkit-scrollbar{display:none}
.shot-card{flex:0 0 calc((100% - 40px)/3);scroll-snap-align:start;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease}
.shot-card:hover{border-color:var(--c-primary);box-shadow:var(--sh-2)}
.shot-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.shot-card .shot-body{padding:18px 20px 20px}
.shot-card h3{font-size:17px;margin-bottom:6px}
.shot-card p{font-size:14px;color:var(--t-muted)}
.shot-card .shot-no{display:block;margin-top:14px;font-size:12px;color:var(--t-muted);font-variant-numeric:tabular-nums}
.shot-card.wide{flex:0 0 calc((100% - 40px)/1.45)}
.dots{display:flex;gap:8px;justify-content:center;margin-top:6px}
.dots button{width:8px;height:8px;border-radius:50%;background:#D6DCD8;transition:background .18s ease,width .18s ease}
.dots button.active{background:var(--c-primary);width:22px;border-radius:999px}

/* ---------- 系统要求 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.spec-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:24px}
.spec-card .spec-icon{width:38px;height:38px;border-radius:12px;background:var(--c-primary-50);color:var(--c-primary);display:grid;place-items:center;font-size:17px;font-weight:700;margin-bottom:16px}
.spec-card .spec-key{font-size:13px;color:var(--t-muted);margin-bottom:4px}
.spec-card .spec-val{font-size:20px;font-weight:700;color:var(--t-strong);font-variant-numeric:tabular-nums;line-height:1.4}
.spec-card .spec-note{font-size:13px;color:var(--t-muted);margin-top:10px;line-height:1.7}
.diff-card{margin-top:24px;background:var(--c-primary-25);border:1px solid #CFE4DC;border-radius:var(--r-card);padding:24px;display:grid;grid-template-columns:1fr 2fr;gap:24px;align-items:center}
.diff-card h3{font-size:18px;margin-bottom:6px}
.diff-card p{font-size:14px;color:var(--t-body)}
.diff-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.diff-list li{background:#fff;border-radius:12px;padding:14px 16px;font-size:14px;color:var(--t-body);border:1px solid var(--border)}
.diff-list li b{display:block;color:var(--t-strong);font-size:15px;margin-bottom:4px}

/* ---------- 评价墙 ---------- */
.wall{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.review{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:24px 24px 22px;transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease}
.review:hover{border-color:#CFE4DC;box-shadow:var(--sh-2);transform:translateY(-2px)}
.review::before{content:"“";position:absolute;right:20px;top:8px;font-size:56px;line-height:1;color:var(--c-primary-50)}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#12907A,#0B6250);color:#fff;display:grid;place-items:center;font-size:15px;font-weight:700;flex:0 0 40px}
.review-name{font-size:15px;font-weight:700;color:var(--t-strong)}
.review-area{font-size:13px;color:var(--t-muted)}
.stars{color:var(--c-accent);font-size:14px;letter-spacing:2px}
.review p{font-size:14.5px;color:var(--t-body);line-height:1.85}
.review-foot{display:flex;align-items:center;justify-content:space-between;margin-top:16px;font-size:13px;color:var(--t-muted)}
.review.tall p{font-size:14.5px}

/* ---------- 下载区 ---------- */
.download-wrap{display:grid;grid-template-columns:2fr 1fr;gap:32px;align-items:stretch}
.platform-list{display:grid;gap:16px}
.platform-btn{display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:18px 22px;transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease}
.platform-btn:hover{border-color:var(--c-primary);box-shadow:var(--sh-2);transform:translateY(-2px)}
.platform-btn .pf-icon{width:44px;height:44px;flex:0 0 44px;border-radius:12px;background:var(--c-primary-50);color:var(--c-primary);display:grid;place-items:center;font-size:18px;font-weight:700}
.platform-btn .pf-main{display:flex;flex-direction:column}
.platform-btn .pf-title{font-size:17px;font-weight:700;color:var(--t-strong)}
.platform-btn .pf-sub{font-size:13px;color:var(--t-muted)}
.platform-btn .pf-go{margin-left:auto;font-size:14px;font-weight:600;color:var(--c-accent)}
.qr-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:24px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:12px}
.qr-box{width:160px;height:160px;border-radius:14px;border:1px solid var(--border);background:
  repeating-linear-gradient(0deg,#17211F 0 8px,#fff 8px 16px),
  repeating-linear-gradient(90deg,rgba(255,255,255,.85) 0 6px,rgba(255,255,255,0) 6px 12px);
  background-blend-mode:screen;position:relative;overflow:hidden}
.qr-box::after{content:"扫码下载";position:absolute;inset:0;display:grid;place-items:center;background:rgba(255,255,255,.86);font-size:14px;font-weight:600;color:var(--c-primary)}
.qr-card p{font-size:13.5px;color:var(--t-muted)}
.verify-row{margin-top:20px;display:flex;flex-wrap:wrap;gap:12px}
.verify-row span{font-size:13px;color:var(--t-muted);background:#fff;border:1px solid var(--border);border-radius:999px;padding:6px 14px;font-variant-numeric:tabular-nums}

/* ---------- 最新信息 ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease}
.post-card:hover{border-color:var(--c-primary);box-shadow:var(--sh-2);transform:translateY(-2px)}
.post-link{display:block;color:inherit}
.post-link:hover{color:inherit}
.post-cover{aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt)}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.post-card:hover .post-cover img{transform:scale(1.03)}
.post-body{padding:20px 22px 22px}
.post-cat{display:inline-block;font-size:12px;font-weight:600;color:var(--c-primary);background:var(--c-primary-50);border-radius:999px;padding:4px 10px;margin-bottom:12px}
.post-title{font-size:17px;line-height:1.5;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-sum{font-size:14px;color:var(--t-muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;align-items:center;justify-content:space-between;margin-top:16px;font-size:13px;color:var(--t-muted)}
.post-arrow{color:var(--c-primary);font-weight:600;transition:transform .18s ease}
.post-card:hover .post-arrow{transform:translateX(4px)}
.empty-state{background:#fff;border:1px dashed var(--border);border-radius:var(--r-card);padding:56px 24px;text-align:center}
.empty-state .empty-icon{width:52px;height:52px;margin:0 auto 16px;border-radius:16px;background:var(--c-primary-25);color:var(--c-primary);display:grid;place-items:center;font-size:22px;font-weight:700}
.empty-state strong{display:block;font-size:17px;color:var(--t-strong);margin-bottom:6px}
.empty-state p{font-size:14px;color:var(--t-muted);margin-bottom:18px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:14px;margin-bottom:14px;overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease}
.faq-item.is-open{border-color:#CFE4DC;box-shadow:var(--sh-1)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;padding:20px 22px;font-size:17px;font-weight:700;color:var(--t-strong)}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 20px;transition:transform .2s ease,color .2s ease;color:var(--t-muted)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;transform:translate(-50%,-50%)}
.faq-icon::before{width:16px;height:2px}
.faq-icon::after{width:2px;height:16px}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--c-primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a p{padding:0 22px 22px;font-size:15px;color:var(--t-body);line-height:1.9}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--c-primary-50);border-top:1px solid #CFE4DC;border-bottom:1px solid #CFE4DC;padding:48px 0}
.cta-band .inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:8px}
.cta-band p{font-size:15px;color:var(--t-body);max-width:44em}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F1A18;color:#C6CFCC;padding:64px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.site-footer .brand{color:#fff;margin-bottom:16px}
.site-footer .brand:hover{color:#fff}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-about{font-size:13.5px;line-height:1.9;color:#94A19E}
.footer-links li{margin-bottom:10px}
.footer-links a{color:#C6CFCC;font-size:13.5px}
.footer-links a:hover{color:#fff}
.footer-contact p{font-size:13.5px;color:#94A19E;line-height:1.9;margin-bottom:8px}
.footer-qr{width:96px;height:96px;border-radius:12px;background:#1B2725;border:1px solid #2A3734;display:grid;place-items:center;font-size:12px;color:#94A19E;margin-top:12px}
.footer-bottom{border-top:1px solid #22302D;padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#7E8C89}
.footer-bottom a{color:#7E8C89}
.footer-bottom a:hover{color:#fff}

/* ---------- 吸底条 ---------- */
.sticky-cta{position:fixed;left:0;right:0;bottom:0;z-index:70;background:#fff;border-top:1px solid var(--border);box-shadow:0 -8px 24px rgba(23,33,31,.08);padding:12px 16px;transform:translateY(120%);transition:transform .26s ease}
.sticky-cta.is-visible{transform:translateY(0)}
.sticky-cta.is-hidden{transform:translateY(120%)}
.sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;max-width:var(--container);margin:0 auto}
.sticky-inner span{font-size:13.5px;color:var(--t-muted)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1080px;padding:0 24px}
  .hero-grid{gap:36px}
  .spec-grid{grid-template-columns:repeat(2,1fr)}
  .wall{grid-template-columns:repeat(2,1fr)}
  .shot-card{flex:0 0 calc((100% - 20px)/2)}
}
@media (max-width:1023px){
  .main-nav,.header-actions .btn{display:none}
  .nav-toggle{display:flex}
  .header-inner{height:64px}
  .hero{padding:40px 0 56px}
  .hero-grid{grid-template-columns:1fr}
  .hero-visual{min-height:340px}
  .device-frame{width:54%}
  .section{padding:64px 0}
  .value-strip{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .download-wrap{grid-template-columns:1fr}
  .diff-card{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  body{font-size:15px;line-height:1.85}
  .container{padding:0 20px}
  .section{padding:56px 0}
  h1{font-size:clamp(26px,7vw,32px)}
  .hero-sub{font-size:16px}
  .hero-actions .btn{width:100%}
  .trust-row{gap:20px}
  .value-strip{grid-template-columns:1fr}
  .shot-card,.shot-card.wide{flex:0 0 86%}
  .wall{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:16px;padding-bottom:12px}
  .review{flex:0 0 84%;scroll-snap-align:start}
  .post-grid{grid-template-columns:1fr}
  .spec-grid{grid-template-columns:1fr}
  .diff-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .news-head{flex-direction:column;align-items:flex-start;gap:12px}
  .cta-band .inner{flex-direction:column;align-items:flex-start}
  .cta-band .btn{width:100%}
  .sticky-cta{padding:10px 14px}
  .sticky-inner span{display:none}
  .sticky-inner .btn{width:100%}
}
@media (max-width:519px){
  .brand-text{font-size:15px}
  .float-card{right:12px;bottom:12px;padding:12px 14px;min-width:132px}
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: article */
:root{
  --primary:#0E7A63;
  --primary-dark:#0B6250;
  --primary-soft:#E6F2EE;
  --primary-soft-2:#F1F7F4;
  --accent:#F0803C;
  --accent-hover:#D96A28;
  --accent-soft:#FDEFE5;
  --ink:#17211F;
  --text:#3A4644;
  --muted:#6B7876;
  --disabled:#A9B1AF;
  --bg:#F7F6F1;
  --card:#FFFFFF;
  --band:#F1F5F2;
  --border:#E2E4DF;
  --success:#2E9E6B;
  --warn:#E9A23B;
  --error:#D9534F;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-hero:24px;
  --sh-1:0 1px 2px rgba(23,33,31,.04), 0 8px 24px rgba(23,33,31,.06);
  --sh-2:0 12px 32px rgba(14,122,99,.12);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px;
  --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:96px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;}
a:focus-visible,button:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.band{background:var(--band);}
.band-soft{background:var(--primary-soft-2);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,246,241,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:#fff;
  border-bottom-color:var(--border);
  box-shadow:0 1px 2px rgba(23,33,31,.04),0 6px 20px rgba(23,33,31,.05);
}
.header-inner{display:flex;align-items:center;gap:var(--sp-5);height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:linear-gradient(140deg,var(--primary),#12A182);
  color:#fff;display:grid;place-items:center;font-size:17px;font-weight:700;
  box-shadow:0 6px 14px rgba(14,122,99,.22);
}
.brand-text{font-size:17px;letter-spacing:.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:auto;}
.nav-link{
  position:relative;font-size:15px;font-weight:600;color:var(--text);
  padding:6px 0;transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;
  background:var(--primary);border-radius:2px;transition:right .22s ease;
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after,.nav-link.active::after{right:0;}
.nav-link.active{color:var(--primary);}
.nav-pill{
  padding:8px 16px;border-radius:999px;background:var(--primary-soft);color:var(--primary-dark);
}
.nav-pill::after{display:none;}
.nav-pill.active,.nav-pill:hover{background:#D8EAE4;color:var(--primary-dark);}
.header-actions{display:flex;align-items:center;gap:var(--sp-3);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);font-size:16px;font-weight:600;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 18px rgba(240,128,60,.22);}
.btn-accent:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 12px 26px rgba(240,128,60,.28);}
.btn-accent:active{transform:translateY(0);}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-outline{background:#fff;color:var(--primary);border:1.5px solid var(--primary);}
.btn-outline:hover{background:var(--primary-soft);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--border);
  background:#fff;position:relative;
}
.nav-toggle i,.nav-toggle i::before,.nav-toggle i::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transform:translateX(-50%);transition:.2s ease;content:"";
}
.nav-toggle i{top:21px;}
.nav-toggle i::before{top:-6px;}
.nav-toggle i::after{top:6px;}
.nav-toggle[aria-expanded="true"] i{background:transparent;}
.nav-toggle[aria-expanded="true"] i::before{top:0;transform:translateX(-50%) rotate(45deg);}
.nav-toggle[aria-expanded="true"] i::after{top:0;transform:translateX(-50%) rotate(-45deg);}

.drawer{
  position:fixed;inset:60px 0 0 0;z-index:70;background:#fff;
  padding:24px 20px 108px;transform:translateY(-8px);opacity:0;visibility:hidden;
  transition:opacity .22s ease,transform .22s ease,visibility .22s;overflow-y:auto;
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer a.drawer-link{
  display:block;padding:16px 4px;font-size:17px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--border);
}
.drawer a.drawer-link.active{color:var(--primary);}
.drawer-cta{
  position:fixed;left:0;right:0;bottom:0;background:#fff;border-top:1px solid var(--border);
  padding:12px 20px 18px;display:none;z-index:75;
}
.drawer-cta.is-open{display:block;}
.drawer-cta .btn{width:100%;}

/* ---------- page top ---------- */
.crumbs{padding:26px 0 0;}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.crumbs li{display:inline-flex;align-items:center;gap:8px;}
.crumbs li+li::before{content:"/";color:#C7CCC8;}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--primary);}
.crumbs .current{color:var(--ink);font-weight:600;}

.article-head{padding:20px 0 38px;border-bottom:1px solid var(--border);}
.article-head .badge-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:16px;}
.badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary-dark);font-size:13px;font-weight:600;
}
.badge-accent{background:var(--accent-soft);color:var(--accent-hover);}
.article-head h1{
  font-size:clamp(28px,4.6vw,44px);line-height:1.32;margin-bottom:18px;
  max-width:900px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--muted);}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C7CCC8;}
.meta-strong{color:var(--ink);font-weight:600;}

/* ---------- layout ---------- */
.layout{
  display:grid;grid-template-columns:minmax(0,760px) 300px;
  gap:56px;padding:48px 0 88px;align-items:start;
}
.article-body{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:40px 44px;box-shadow:var(--sh-1);
  font-size:16px;line-height:1.9;letter-spacing:.01em;color:var(--text);
}
.article-body>p{margin-bottom:1.15em;}
.article-body h2{
  position:relative;font-size:clamp(22px,3vw,28px);line-height:1.34;
  margin:48px 0 18px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;
  border-radius:4px;background:var(--primary);
}
.article-body h3{font-size:20px;line-height:1.4;margin:32px 0 12px;}
.article-body h4{font-size:17px;margin:24px 0 10px;color:var(--ink);}
.article-body a{
  color:var(--primary);text-decoration:underline;text-underline-offset:3px;
  text-decoration-thickness:1px;
}
.article-body a:hover{color:var(--primary-dark);text-decoration-thickness:2px;}
.article-body strong{color:var(--ink);}
.article-body ul,.article-body ol{margin:0 0 1.15em;padding-left:2px;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:8px;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.68em;width:6px;height:6px;border-radius:2px;
  background:var(--primary);opacity:.75;
}
.article-body ol{counter-reset:li;}
.article-body ol li{position:relative;padding-left:26px;margin-bottom:8px;counter-increment:li;}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.1em;width:18px;height:18px;border-radius:6px;
  background:var(--primary-soft);color:var(--primary-dark);font-size:12px;font-weight:700;
  display:grid;place-items:center;font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:var(--primary-soft-2);
  border-left:3px solid var(--primary);border-radius:0 var(--r-img) var(--r-img) 0;
  color:var(--text);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:24px auto;box-shadow:var(--sh-1);}
.article-body figure{margin:24px 0;}
.article-body figcaption,.article-body .caption{
  display:block;text-align:center;font-size:13px;line-height:1.6;color:var(--muted);margin-top:10px;
}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body th,.article-body td{
  border:1px solid var(--border);padding:10px 14px;text-align:left;
}
.article-body th{background:var(--band);color:var(--ink);font-weight:600;}
.article-body pre{
  margin:24px 0;padding:18px 20px;background:#17211F;color:#DCE6E2;
  border-radius:var(--r-img);overflow-x:auto;font-size:13.5px;line-height:1.7;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  background:var(--band);border-radius:6px;padding:2px 6px;font-size:14px;color:var(--primary-dark);
}
.article-body pre code{background:none;padding:0;color:inherit;}
.article-body hr{border:0;border-top:1px solid var(--border);margin:32px 0;}

/* ---------- sidebar ---------- */
.sidebar{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px;}
.side-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
}
.side-card h3{font-size:15px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{
  content:"";width:4px;height:16px;border-radius:4px;background:var(--accent);display:inline-block;
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;font-size:14px;line-height:1.6;color:var(--muted);padding:7px 10px;
  border-left:2px solid var(--border);border-radius:0 8px 8px 0;transition:.18s ease;
}
.toc-list a:hover{color:var(--primary);border-left-color:var(--primary);background:var(--primary-soft-2);}
.toc-list a.is-sub{padding-left:22px;font-size:13px;}
.toc-empty{font-size:13px;color:var(--muted);line-height:1.7;}
.dl-card{background:linear-gradient(160deg,#0E7A63,#0B6250);color:#fff;border:0;}
.dl-card h3{color:#fff;}
.dl-card h3::before{background:var(--accent);}
.dl-card p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.86);margin-bottom:16px;}
.dl-card .btn{width:100%;}
.dl-card .dl-note{
  display:flex;justify-content:space-between;gap:10px;margin-top:14px;
  font-size:12px;color:rgba(255,255,255,.72);font-variant-numeric:tabular-nums;
}
.rec-list{display:flex;flex-direction:column;gap:14px;}
.rec-item{display:flex;gap:12px;align-items:flex-start;}
.rec-item img{width:74px;height:52px;border-radius:10px;object-fit:cover;flex:0 0 74px;}
.rec-item a{font-size:14px;font-weight:600;color:var(--ink);line-height:1.55;display:block;}
.rec-item a:hover{color:var(--primary);}
.rec-item span{font-size:12px;color:var(--muted);}

/* ---------- tags & related ---------- */
.tag-row{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;padding-top:28px;border-top:1px solid var(--border);
}
.tag{
  display:inline-flex;align-items:center;padding:7px 15px;border-radius:999px;
  background:var(--primary-soft-2);color:var(--primary-dark);font-size:13px;font-weight:600;
  border:1px solid #DCE9E4;transition:.18s ease;
}
.tag:hover{background:var(--primary-soft);border-color:#C7DED6;}
.section{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.section-head h2{font-size:clamp(22px,3vw,32px);line-height:1.34;}
.section-head p{font-size:14px;color:var(--muted);margin-top:8px;}
.text-link{font-size:15px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px;}
.text-link:hover{color:var(--primary-dark);}
.text-link .arrow{transition:transform .18s ease;}
.text-link:hover .arrow{transform:translateX(4px);}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:.18s ease;
}
.card:hover{border-color:#C7DED6;box-shadow:var(--sh-2);transform:translateY(-2px);}
.card:hover .card-link .arrow{transform:translateX(4px);}
.card-media{aspect-ratio:16/9;overflow:hidden;background:var(--band);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:18px;line-height:1.45;}
.card-body p{font-size:14px;line-height:1.8;color:var(--muted);}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.card-foot time{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;}
.card-link{font-size:14px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px;}
.card-link .arrow{transition:transform .18s ease;}

.back-row{display:flex;flex-wrap:wrap;align-items:center;gap:16px;padding:0 0 72px;}
.empty-state{
  text-align:center;padding:56px 24px;background:#fff;border:1px dashed var(--border);
  border-radius:var(--r-card);
}
.empty-state .empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:18px;background:var(--primary-soft);
  display:grid;place-items:center;color:var(--primary);font-size:24px;font-weight:700;
}
.empty-state h3{font-size:19px;margin-bottom:10px;}
.empty-state p{font-size:14px;color:var(--muted);margin-bottom:20px;}

.cta-strip{
  background:var(--primary-soft);border:1px solid #D6E7E1;border-radius:var(--r-hero);
  padding:32px 36px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  margin-bottom:88px;
}
.cta-strip h2{font-size:22px;margin-bottom:8px;}
.cta-strip p{font-size:14.5px;color:var(--text);max-width:620px;}

/* ---------- footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--border);padding:64px 0 0;margin-top:24px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-grid h4{font-size:15px;margin-bottom:16px;}
.footer-about{font-size:14px;line-height:1.85;color:var(--muted);margin-top:16px;max-width:420px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:var(--muted);}
.footer-links a:hover{color:var(--primary);}
.footer-contact p{font-size:14px;color:var(--muted);margin-bottom:10px;}
.footer-qr{
  width:110px;height:110px;border-radius:14px;border:1px dashed var(--border);background:var(--band);
  display:grid;place-items:center;font-size:12px;color:var(--muted);margin-top:14px;
}
.footer-bottom{
  border-top:1px solid var(--border);padding:22px 0;display:flex;flex-wrap:wrap;
  justify-content:space-between;gap:12px;font-size:13px;color:var(--muted);
}

.to-top{
  position:fixed;right:24px;bottom:32px;width:46px;height:46px;border-radius:14px;
  background:#fff;border:1px solid var(--border);box-shadow:var(--sh-1);
  display:grid;place-items:center;color:var(--primary);font-size:18px;z-index:60;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:.22s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{box-shadow:var(--sh-2);border-color:#C7DED6;}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 24px;}
  .layout{grid-template-columns:minmax(0,1fr) 280px;gap:36px;}
  .article-body{padding:34px 32px;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:block;}
  .header-actions .btn-accent{display:none;}
  .header-inner{height:60px;}
  .layout{grid-template-columns:minmax(0,1fr);gap:32px;padding:36px 0 64px;}
  .sidebar{position:static;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-strip{flex-direction:column;align-items:flex-start;padding:28px 24px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  body{font-size:15px;line-height:1.85;}
  .article-body p,.article-body li{font-size:15px;}
  .article-body{padding:24px 20px;border-radius:14px;}
  .article-head{padding:16px 0 28px;}
  .card-grid{grid-template-columns:1fr;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-bottom:36px;}
  .footer-about{max-width:100%;}
  .footer-bottom{flex-direction:column;}
  .btn{width:100%;}
  .btn-inline{width:auto;}
  .back-row .btn{width:100%;}
  .to-top{right:16px;bottom:88px;}
  .cta-strip{margin-bottom:64px;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;}
  .meta-row{font-size:12.5px;gap:8px;}
}

/* roulang page: category1 */
:root{
  --primary:#0E7A63;
  --primary-dark:#0B6250;
  --primary-100:#E6F2EE;
  --primary-50:#F1F7F4;
  --accent:#F0803C;
  --accent-dark:#D96A28;
  --accent-100:#FDEFE5;
  --ink:#17211F;
  --text:#3A4644;
  --muted:#6B7876;
  --disabled:#A9B1AF;
  --bg:#F7F6F1;
  --card:#FFFFFF;
  --alt:#F1F5F2;
  --border:#E2E4DF;
  --success:#2E9E6B;
  --warning:#E9A23B;
  --danger:#D9534F;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-hero:24px;
  --shadow-1:0 1px 2px rgba(23,33,31,.04),0 8px 24px rgba(23,33,31,.06);
  --shadow-2:0 12px 32px rgba(14,122,99,.12);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-dark)}
button,input{font-family:inherit;font-size:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em;line-height:1.34}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  height:72px;
  background:rgba(247,246,241,.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background-color .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.site-header.scrolled{background:#fff;border-bottom-color:var(--border);box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);font-weight:700;font-size:17px}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:32px;height:32px;border-radius:9px;flex:0 0 auto;
  background:var(--primary);color:#fff;
  display:grid;place-items:center;font-size:17px;font-weight:700;line-height:1;
}
.brand-text{white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:28px;margin:0 auto}
.nav-link{
  position:relative;font-size:15px;font-weight:600;color:var(--text);
  padding:6px 2px;white-space:nowrap;transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--primary)}
.nav-pill{
  background:var(--primary-100);color:var(--primary);
  padding:8px 16px;border-radius:999px;
}
.nav-pill::after{display:none}
.nav-pill:hover{background:#d9ebe4;color:var(--primary-dark)}
.nav-pill.active{background:var(--primary);color:#fff}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--border);
  background:#fff;cursor:pointer;position:relative;
}
.nav-toggle i,.nav-toggle i::before,.nav-toggle i::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:var(--ink);
  transform:translateX(-50%);transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle i{top:50%;margin-top:-1px}
.nav-toggle i::before{top:-6px}
.nav-toggle i::after{top:6px}
body.nav-open .nav-toggle i{background:transparent}
body.nav-open .nav-toggle i::before{transform:translateX(-50%) rotate(45deg);top:0}
body.nav-open .nav-toggle i::after{transform:translateX(-50%) rotate(-45deg);top:0}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);border:1.5px solid transparent;
  font-size:16px;font-weight:600;line-height:1;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;
}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 28px rgba(217,106,40,.26)}
.btn-accent:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-ghost:hover{background:var(--primary-50);color:var(--primary-dark);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- Section base ---------- */
.section{padding:88px 0}
.section-alt{background:var(--alt)}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{font-size:clamp(22px,3vw,32px);margin-bottom:12px}
.section-head p{color:var(--muted);margin:0}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--primary-100);color:var(--primary);
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;line-height:1.6;
}
.badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--primary)}

/* ---------- Page head ---------- */
.page-head{
  position:relative;
  padding:56px 0 72px;
  background-color:#fff;
  background-image:linear-gradient(180deg,rgba(241,247,244,.9) 0%,rgba(255,255,255,.96) 68%),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--border);
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:24px;flex-wrap:wrap}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span.sep{color:var(--disabled)}
.breadcrumb .current{color:var(--ink);font-weight:600}
.head-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:48px;align-items:start}
.head-main h1{font-size:clamp(28px,4.6vw,44px);line-height:1.28;margin:16px 0 16px}
.head-lead{font-size:17px;color:var(--text);max-width:660px}
.meta-row{
  display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;
  font-size:13px;color:var(--muted);margin-top:24px;
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--disabled)}
.meta-row b{color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums}

.head-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-1);
}
.head-card-img{border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/10;margin-bottom:16px}
.head-card-img img{width:100%;height:100%;object-fit:cover}
.head-card h3{font-size:18px;margin-bottom:12px}
.mini-list{display:grid;gap:10px;margin-bottom:18px}
.mini-list li{display:flex;align-items:baseline;justify-content:space-between;gap:12px;font-size:14px;color:var(--muted)}
.mini-list li b{color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums}
.tiny{font-size:12px;color:var(--muted);margin:12px 0 0;line-height:1.7}

/* ---------- Steps ---------- */
.steps-grid{display:grid;grid-template-columns:minmax(0,1.85fr) minmax(0,1fr);gap:48px;align-items:start}
.step-list{display:grid;gap:16px;counter-reset:step}
.step-item{
  display:grid;grid-template-columns:56px minmax(0,1fr) 112px;gap:20px;align-items:center;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px 22px;transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.step-item:hover{border-color:#bfdfd5;box-shadow:var(--shadow-2);transform:translateY(-2px)}
.step-no{
  font-size:22px;font-weight:700;color:var(--primary);line-height:1;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.step-body h3{font-size:18px;margin-bottom:6px}
.step-body p{font-size:14px;color:var(--muted);margin:0;line-height:1.75}
.step-thumb{border-radius:var(--r-img);overflow:hidden;aspect-ratio:4/3;background:var(--alt)}
.step-thumb img{width:100%;height:100%;object-fit:cover}

.steps-aside{position:relative}
.sticky-card{
  position:sticky;top:96px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-1);
}
.sticky-card .sticky-img{border-radius:var(--r-img);overflow:hidden;aspect-ratio:4/3;margin-bottom:16px}
.sticky-card .sticky-img img{width:100%;height:100%;object-fit:cover}
.sticky-card h3{font-size:18px;margin-bottom:10px}
.sticky-card p{font-size:14px;color:var(--muted);margin-bottom:14px}
.check-list{display:grid;gap:8px;margin-bottom:18px}
.check-list li{position:relative;padding-left:22px;font-size:14px;color:var(--text);line-height:1.7}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:12px;height:12px;border-radius:4px;
  background:var(--primary-100);border:1.5px solid var(--primary);
}

/* ---------- Scene cards ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.scene-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.scene-card:hover{border-color:#bfdfd5;box-shadow:var(--shadow-2);transform:translateY(-3px)}
.scene-card .scene-img{aspect-ratio:16/9;overflow:hidden;background:var(--alt)}
.scene-card .scene-img img{width:100%;height:100%;object-fit:cover}
.scene-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.scene-body h3{font-size:19px}
.scene-body p{font-size:14.5px;color:var(--muted);margin:0}
.tag{
  display:inline-block;background:var(--accent-100);color:var(--accent-dark);
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;line-height:1.6;
}

/* ---------- Stats ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.stat-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:22px;transition:border-color .18s ease,box-shadow .18s ease;
}
.stat-card:hover{border-color:#bfdfd5;box-shadow:var(--shadow-1)}
.stat-label{font-size:13px;color:var(--muted);margin-bottom:8px}
.stat-num{font-size:22px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1.3}
.stat-note{font-size:12.5px;color:var(--muted);margin:8px 0 0;line-height:1.7}
.notice{
  margin-top:24px;display:flex;gap:14px;align-items:flex-start;
  background:var(--primary-50);border:1px solid #d8e9e2;border-left:3px solid var(--primary);
  border-radius:var(--r-img);padding:16px 20px;
}
.notice strong{color:var(--primary-dark);font-size:14px;display:block;margin-bottom:4px}
.notice p{font-size:14px;color:var(--text);margin:0}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:800px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item + .faq-item{margin-top:12px}
.faq-item[open]{border-color:#bfdfd5;box-shadow:var(--shadow-1)}
.faq-q{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:17px;font-weight:700;color:var(--ink);line-height:1.5;
}
.faq-q::-webkit-details-marker{display:none}
.faq-q::after{
  content:"+";flex:0 0 auto;font-size:22px;font-weight:400;color:var(--muted);
  transition:transform .2s ease,color .2s ease;line-height:1;
}
.faq-item[open] .faq-q::after{transform:rotate(45deg);color:var(--primary)}
.faq-a{padding:0 22px 20px;font-size:15px;color:var(--text);line-height:1.85}
.faq-a p{margin:0}

/* ---------- Download ---------- */
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr)) minmax(0,1fr);gap:20px;align-items:stretch}
.dl-btn{
  display:flex;flex-direction:column;gap:6px;justify-content:center;
  background:#fff;border:1.5px solid var(--border);border-radius:var(--r-card);
  padding:20px 22px;color:var(--ink);transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.dl-btn:hover{border-color:var(--primary);box-shadow:var(--shadow-2);transform:translateY(-2px);color:var(--ink)}
.dl-name{font-size:17px;font-weight:700}
.dl-sub{font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.qr-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;
}
.qr-box{
  width:120px;height:120px;border-radius:var(--r-img);border:1.5px dashed var(--border);
  display:grid;place-items:center;color:var(--muted);font-size:12.5px;background:var(--alt);
}
.qr-card p{font-size:13px;color:var(--muted);margin:0}
.verify-line{
  margin-top:20px;display:flex;flex-wrap:wrap;gap:10px 24px;
  font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;
}
.verify-line b{color:var(--ink);font-weight:600}

.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:20px}
.rel-card{
  display:flex;flex-direction:column;gap:8px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:22px;
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.rel-card:hover{border-color:#bfdfd5;box-shadow:var(--shadow-2);transform:translateY(-2px)}
.rel-card h3{font-size:17px;display:flex;align-items:center;justify-content:space-between;gap:10px}
.rel-card h3 .arrow{color:var(--primary);transition:transform .18s ease}
.rel-card:hover h3 .arrow{transform:translateX(4px)}
.rel-card p{font-size:13.5px;color:var(--muted);margin:0}

/* ---------- Footer ---------- */
.site-footer{background:#14201D;color:#C8D2CF;padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.site-footer .brand{color:#fff;margin-bottom:16px}
.site-footer .brand-mark{background:var(--primary)}
.footer-about{font-size:13.5px;line-height:1.85;color:#9FADA9;margin:0;max-width:360px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-links{display:grid;gap:10px}
.footer-links a{color:#9FADA9;font-size:14px;transition:color .18s ease}
.footer-links a:hover{color:#fff}
.footer-contact p{font-size:14px;color:#9FADA9;margin:0 0 8px}
.footer-qr{
  width:96px;height:96px;border-radius:var(--r-img);border:1.5px dashed #3B4A46;
  display:grid;place-items:center;font-size:12px;color:#7C8985;margin-top:14px;background:#1B2926;
}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid #28352F;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:#7C8985;
}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .head-grid{gap:32px}
  .steps-grid{gap:32px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:64px 0}
  .main-nav{
    position:fixed;top:0;right:0;z-index:90;
    width:min(86vw,360px);height:100vh;
    flex-direction:column;align-items:stretch;gap:6px;
    background:#fff;padding:88px 24px 32px;
    box-shadow:-16px 0 40px rgba(23,33,31,.16);
    transform:translateX(100%);transition:transform .28s ease;
    overflow-y:auto;margin:0;
  }
  body.nav-open .main-nav{transform:translateX(0)}
  body.nav-open::before{content:"";position:fixed;inset:0;background:rgba(23,33,31,.42);z-index:80}
  .nav-link{font-size:16px;padding:14px 12px;border-radius:10px}
  .nav-link:hover{background:var(--primary-50)}
  .nav-link::after{display:none}
  .nav-pill{border-radius:10px;padding:14px 12px;text-align:center}
  .nav-toggle{display:block}
  .head-grid{grid-template-columns:1fr;gap:32px}
  .steps-grid{grid-template-columns:1fr;gap:32px}
  .sticky-card{position:static}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .dl-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .rel-grid{grid-template-columns:1fr}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .site-header,.header-inner{height:60px}
  .brand-text{font-size:15px}
  .section{padding:56px 0}
  .page-head{padding:36px 0 56px}
  .header-actions .btn{padding:10px 16px;font-size:14px}
  .step-item{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:18px}
  .step-thumb{display:none}
  .scene-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr}
  .dl-grid{grid-template-columns:1fr}
  .faq-q{font-size:16px;padding:16px 18px}
  .faq-a{padding:0 18px 18px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .head-main h1{font-size:26px}
  .head-lead{font-size:15.5px}
  .btn{width:100%}
  .header-actions .btn{width:auto}
}

/* roulang page: category2 */
:root{
  --brand:#0E7A63;
  --brand-dark:#0B6250;
  --brand-50:#E6F2EE;
  --brand-100:#F1F7F4;
  --accent:#F0803C;
  --accent-dark:#D96A28;
  --accent-50:#FDEFE5;
  --ink:#17211F;
  --text:#3A4644;
  --muted:#6B7876;
  --disabled:#A9B1AF;
  --bg:#F7F6F1;
  --card:#FFFFFF;
  --alt:#F1F5F2;
  --border:#E2E4DF;
  --border-strong:#BFDCD3;
  --ok:#2E9E6B;
  --warn:#E9A23B;
  --err:#D9534F;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-hero:24px;
  --shadow-sm:0 1px 2px rgba(23,33,31,.04),0 8px 24px rgba(23,33,31,.06);
  --shadow-lg:0 12px 32px rgba(14,122,99,.12);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-dark)}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em;font-weight:700}
h1{font-size:clamp(28px,4.6vw,44px);line-height:1.28}
h2{font-size:clamp(22px,3vw,32px);line-height:1.34}
h3{font-size:20px;line-height:1.4}
p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:88px 0}
.section-alt{background:var(--alt)}
.section-head{max-width:720px;margin-bottom:32px}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);background:var(--brand-50);border-radius:999px;padding:6px 14px;margin-bottom:16px}
.section-head .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
.section-head p{margin-top:14px;font-size:16px;color:var(--muted);line-height:1.9}
.tabnum{font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:16px;font-weight:600;line-height:1.2;
  padding:13px 24px;border-radius:var(--radius-btn);
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px rgba(240,128,60,.26)}
.btn-accent:active{transform:translateY(0);box-shadow:none}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-lg)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:#fff;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-dark);border-color:var(--brand-dark)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,246,241,.94);
  backdrop-filter:saturate(150%) blur(10px);
  border-bottom:1px solid transparent;
  transition:background-color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.site-header.scrolled{background:#fff;border-bottom-color:var(--border);box-shadow:0 2px 14px rgba(23,33,31,.06)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:34px;height:34px;flex:none;border-radius:10px;
  background:linear-gradient(140deg,var(--brand),#139277);
  color:#fff;display:grid;place-items:center;font-size:17px;font-weight:700;
  box-shadow:0 6px 14px rgba(14,122,99,.22);
}
.brand-text{font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{position:relative;font-size:15px;font-weight:600;color:var(--text);padding:6px 0}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand)}
.nav-pill{background:var(--brand-50);color:var(--brand);padding:8px 16px;border-radius:999px}
.nav-pill::after{display:none}
.nav-pill:hover{background:#D8EBE4;color:var(--brand-dark)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:4px}
.header-actions .btn{padding:11px 20px;font-size:15px}
.drawer-cta{display:none}
.nav-toggle{
  display:none;position:relative;width:44px;height:44px;flex:none;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-btn);cursor:pointer;
}
.nav-toggle i{position:absolute;left:50%;top:50%;width:18px;height:2px;margin:-1px 0 0 -9px;background:var(--ink);border-radius:2px;transition:background .2s ease}
.nav-toggle i::before,.nav-toggle i::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease}
.nav-toggle i::before{top:-6px}
.nav-toggle i::after{top:6px}
.nav-toggle.open i{background:transparent}
.nav-toggle.open i::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle.open i::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- 分类页头 ---------- */
.cat-hero{position:relative;padding:44px 0 84px;background:var(--brand-100);overflow:hidden}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.16;
}
.cat-hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(14,122,99,.14),rgba(14,122,99,0) 68%);
}
.cat-hero .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;line-height:1.6;color:var(--muted);margin-bottom:22px}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:#C7CECB}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb [aria-current]{color:var(--ink);font-weight:600}
.cat-hero-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,.95fr);gap:40px;align-items:start}
.cat-hero h1{max-width:16em}
.cat-lead{margin-top:18px;font-size:17px;line-height:1.9;color:var(--text);max-width:660px}
.cat-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;
  color:var(--brand);background:#fff;border:1px solid #D5E8E1;border-radius:999px;padding:6px 14px;
}
.cat-cta-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-sm);
}
.cat-cta-card h3{font-size:18px;margin-bottom:10px}
.cat-cta-card p{font-size:14px;color:var(--muted);line-height:1.8}
.cat-cta-card .btn{width:100%;margin-top:18px}
.cat-cta-meta{
  margin-top:14px;padding-top:14px;border-top:1px dashed var(--border);
  font-size:13px;color:var(--muted);line-height:1.7;
}

/* ---------- 适配数据条 ---------- */
.spec-wrap{margin-top:-48px;position:relative;z-index:5}
.spec-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px 28px;box-shadow:var(--shadow-sm);
}
.spec-item{border-left:2px solid var(--brand-50);padding-left:16px}
.spec-item:first-child{border-left-color:var(--brand)}
.spec-label{font-size:13px;color:var(--muted);line-height:1.6}
.spec-value{margin-top:6px;font-size:19px;font-weight:700;color:var(--ink);line-height:1.5;font-variant-numeric:tabular-nums}
.spec-note{font-size:12px;color:var(--muted);margin-top:4px;line-height:1.6}

/* ---------- 交替图文行 ---------- */
.feature-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center}
.feature-row + .feature-row{margin-top:72px}
.feature-row.reverse .feature-media{order:2}
.feature-media{
  position:relative;border-radius:var(--radius-hero);overflow:hidden;
  border:1px solid var(--border);background:var(--alt);box-shadow:var(--shadow-sm);
}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s ease}
.feature-media:hover img{transform:scale(1.03)}
.feature-flag{
  position:absolute;left:16px;top:16px;z-index:2;
  background:rgba(255,255,255,.95);color:var(--brand);
  font-size:12px;font-weight:600;padding:6px 13px;border-radius:999px;
  box-shadow:0 4px 12px rgba(23,33,31,.08);
}
.row-no{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);margin-bottom:14px}
.row-no::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--brand)}
.feature-body h3{margin-bottom:14px}
.feature-body p{font-size:16px;line-height:1.9;color:var(--text)}
.feature-list{margin-top:16px;display:grid;gap:10px}
.feature-list li{position:relative;padding-left:22px;font-size:15px;color:var(--text);line-height:1.8}
.feature-list li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:2px;
  background:var(--brand-50);border:1.5px solid var(--brand);
}
.link-more{
  display:inline-flex;align-items:center;gap:6px;margin-top:20px;
  font-size:15px;font-weight:600;color:var(--brand);
  border-bottom:1px solid rgba(14,122,99,.35);padding-bottom:2px;
}
.link-more:hover{color:var(--brand-dark);border-bottom-color:var(--brand-dark)}
.link-more span{transition:transform .18s ease}
.link-more:hover span{transform:translateX(4px)}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.step{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px;transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.step:hover{border-color:var(--border-strong);box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.step-no{
  width:34px;height:34px;border-radius:11px;background:var(--brand-50);color:var(--brand);
  display:grid;place-items:center;font-size:15px;font-weight:700;margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- 自检卡 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.check-item{
  display:flex;gap:16px;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);padding:22px;
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.check-item:hover{border-color:var(--border-strong);box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.check-icon{
  width:44px;height:44px;flex:none;border-radius:13px;background:var(--brand-50);color:var(--brand);
  display:grid;place-items:center;font-size:17px;font-weight:700;font-variant-numeric:tabular-nums;
}
.check-item h3{font-size:17px;margin-bottom:6px}
.check-item p{font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- FAQ ---------- */
.faq-list{max-width:840px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  margin-bottom:14px;overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item.open{border-color:var(--border-strong);box-shadow:var(--shadow-sm)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:700;color:var(--ink);line-height:1.6;
}
.faq-q:hover{color:var(--brand)}
.faq-icon{position:relative;width:20px;height:20px;flex:none;color:var(--muted);transition:color .2s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-icon::before{left:0;right:0;top:9px;height:2px}
.faq-icon::after{top:0;bottom:0;left:9px;width:2px;transition:transform .2s ease}
.faq-item.open .faq-icon{color:var(--brand)}
.faq-item.open .faq-icon::after{transform:scaleY(0)}
.faq-answer{display:grid;grid-template-rows:0fr;transition:grid-template-rows .2s ease}
.faq-item.open .faq-answer{grid-template-rows:1fr}
.faq-answer-inner{overflow:hidden}
.faq-answer p{padding:0 24px 22px;font-size:15px;color:var(--text);line-height:1.9}

/* ---------- 相关入口 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rel-card{
  display:block;background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;color:var(--text);
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.rel-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow-lg);transform:translateY(-2px);color:var(--text)}
.rel-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.rel-body{padding:20px 22px 22px}
.rel-body h3{font-size:17px;margin-bottom:8px}
.rel-body p{font-size:14px;color:var(--muted);line-height:1.8}
.rel-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:600;color:var(--brand)}
.rel-more span{transition:transform .18s ease}
.rel-card:hover .rel-more span{transform:translateX(4px)}

/* ---------- 下载面板 ---------- */
.dl-panel{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-hero);
  padding:32px;box-shadow:var(--shadow-sm);
}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.dl-btn{
  display:block;background:var(--alt);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:22px;color:var(--ink);
  transition:border-color .18s ease,background-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.dl-btn:hover{border-color:var(--brand);background:var(--brand-100);transform:translateY(-2px);box-shadow:var(--shadow-lg);color:var(--ink)}
.dl-btn strong{display:block;font-size:17px;font-weight:700;color:var(--ink)}
.dl-btn small{display:block;margin-top:8px;font-size:13px;color:var(--muted);line-height:1.7;font-variant-numeric:tabular-nums}
.dl-meta{
  margin-top:22px;padding-top:18px;border-top:1px dashed var(--border);
  font-size:13px;color:var(--muted);line-height:1.8;font-variant-numeric:tabular-nums;
}

/* ---------- CTA 条 ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  background:var(--brand-50);border:1px solid #D5E8E1;border-radius:var(--radius-hero);
  padding:38px 44px;
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px)}
.cta-band p{margin-top:10px;font-size:15px;color:var(--muted);max-width:560px;line-height:1.85}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--border);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.site-footer h4{font-size:15px;margin-bottom:16px}
.footer-about{margin-top:16px;font-size:14px;color:var(--muted);line-height:1.85;max-width:380px}
.footer-links li+li{margin-top:10px}
.footer-links a{font-size:14px;color:var(--muted)}
.footer-links a:hover{color:var(--brand)}
.footer-contact p{font-size:14px;color:var(--muted);line-height:1.85}
.footer-qr{
  width:104px;height:104px;margin-top:14px;border-radius:var(--radius-img);
  border:1px dashed #C7CECB;background:var(--alt);
  display:grid;place-items:center;font-size:12px;color:var(--muted);
}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:48px;padding-top:22px;border-top:1px solid var(--border);
  font-size:13px;color:var(--muted);line-height:1.7;
}

/* ---------- 移动吸底条 ---------- */
.sticky-cta{display:none}

/* ---------- 断点 ---------- */
@media (max-width:1279px){
  .container{max-width:1080px}
  .feature-row{gap:44px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:64px 0}
  .header-inner{height:60px}
  .nav-toggle{display:block}
  .main-nav{
    position:fixed;left:0;right:0;top:60px;bottom:0;z-index:70;
    margin-left:0;display:flex;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;padding:12px 20px 120px;overflow-y:auto;
    transform:translateX(102%);transition:transform .26s ease;
  }
  .main-nav.open{transform:translateX(0)}
  .nav-link{padding:16px 4px;font-size:16px;border-bottom:1px solid var(--border)}
  .nav-link::after{display:none}
  .nav-pill{margin:16px 0 0;text-align:center;border-bottom:0}
  .drawer-cta{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:71;
    padding:12px 20px;background:#fff;border-top:1px solid var(--border);
    transform:translateY(105%);transition:transform .26s ease;
  }
  .drawer-cta.show{transform:translateY(0)}
  .drawer-cta .btn{width:100%}
  .cat-hero{padding:36px 0 76px}
  .cat-hero-grid{grid-template-columns:1fr;gap:28px}
  .spec-wrap{margin-top:-40px}
  .spec-strip{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;padding:24px}
  .feature-row{grid-template-columns:1fr;gap:24px}
  .feature-row + .feature-row{margin-top:56px}
  .feature-row.reverse .feature-media{order:0}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .dl-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:767px){
  body{font-size:15px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  h1{font-size:clamp(26px,7vw,32px)}
  .brand-text{font-size:16px;white-space:normal;max-width:9em;line-height:1.25}
  .header-actions .btn.btn-accent{display:none}
  .cat-lead{font-size:15px}
  .spec-wrap{margin-top:0}
  .spec-strip{grid-template-columns:1fr;margin-top:0}
  .spec-item{border-left:0;border-top:1px solid var(--border);padding-left:0;padding-top:14px}
  .spec-item:first-child{border-top:0;padding-top:0}
  .feature-media img{aspect-ratio:3/2}
  .steps{grid-template-columns:1fr}
  .check-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .dl-grid{grid-template-columns:1fr}
  .dl-panel{padding:24px}
  .cta-band{padding:26px 22px}
  .cta-band .btn{width:100%}
  .faq-q{padding:18px 20px;font-size:16px}
  .faq-answer p{padding:0 20px 20px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .site-footer{padding:48px 0 100px}
  .footer-bottom{flex-direction:column;margin-top:32px}
  .sticky-cta{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:75;
    align-items:center;gap:12px;padding:10px 16px;
    background:rgba(255,255,255,.97);border-top:1px solid var(--border);
    backdrop-filter:blur(8px);transition:transform .26s ease;
  }
  .sticky-cta.is-hidden{transform:translateY(110%)}
  .sticky-cta-text{font-size:12px;color:var(--muted);line-height:1.5}
  .sticky-cta .btn{flex:1;padding:12px 16px;font-size:15px}
}
@media (max-width:520px){
  .section-head p{font-size:15px}
  .cat-tags{gap:8px}
  .tag{font-size:12px;padding:5px 11px}
  .check-item{padding:18px}
  .dl-btn{padding:18px}
}