/* roulang page: index */
:root{
--c-primary:#0FB27E;--c-primary-dark:#0A7D5A;--c-primary-light:#E4F7F0;
--c-accent:#D6F451;--c-accent-soft:#F2FACB;
--c-orange:#FF6B35;--c-orange-dark:#E8541C;
--ink:#0E1416;--ink-2:#131A1D;
--bg:#F5F6F2;--white:#FFFFFF;
--t1:#14191C;--t2:#5A666B;--t3:#8B9599;
--line:#E3E7E1;--on-dark:#F2F5F1;--on-dark-2:#A9B6B2;
--r-card:16px;--r-img:12px;--r-btn:10px;--r-pill:999px;
--sh:0 1px 2px rgba(14,20,22,.04),0 10px 28px rgba(14,20,22,.06);
--sh-hover:0 6px 12px rgba(14,20,22,.06),0 18px 40px rgba(14,20,22,.10);
--ease:.22s ease;
--sec-pad:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--t1);font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;font-size:17px;line-height:1.8;font-weight:400;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease)}
a:hover{color:var(--c-primary-dark)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:800;letter-spacing:-.01em;line-height:1.35}
h1{font-size:44px}
h2{font-size:32px}
h3{font-size:21px;font-weight:700}
h4{font-size:17px;font-weight:700}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.narrow{max-width:860px;margin:0 auto}
.section{padding:var(--sec-pad) 0;position:relative}
.section--light{background:var(--bg)}
.section--white{background:var(--white)}
.section--dark{background:var(--ink);color:var(--on-dark)}
.section--dark h2,.section--dark h3{color:var(--on-dark)}
.section-head{margin-bottom:44px;max-width:760px}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--c-primary-dark);background:var(--c-primary-light);border-radius:var(--r-pill);padding:6px 14px;margin-bottom:16px}
.section--dark .eyebrow{background:rgba(15,178,126,.16);color:var(--c-accent)}
.section-head p{margin-top:14px;color:var(--t2);font-size:16px}
.section--dark .section-head p{color:var(--on-dark-2)}
.section-head--split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}

/* ---------- Grid 覆盖 ---------- */
.grid-x{display:flex;flex-wrap:wrap}
.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px}
.cell{width:100%;min-width:0}
.grid-x.align-middle{align-items:center}
@media screen and (min-width:768px){
.medium-6{width:50%}.medium-4{width:33.3333%}.medium-8{width:66.6666%}
}
@media screen and (min-width:1024px){
.large-3{width:25%}.large-4{width:33.3333%}.large-5{width:41.6666%}.large-6{width:50%}.large-7{width:58.3333%}.large-8{width:66.6666%}.large-9{width:75%}
}
.gap-b{margin-bottom:24px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:700;border:1.5px solid transparent;transition:all var(--ease);white-space:nowrap}
.btn-primary{background:var(--c-orange);color:#fff}
.btn-primary:hover{background:var(--c-orange-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 26px rgba(255,107,53,.26)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary);background:transparent}
.btn-outline:hover{background:var(--c-primary-light);color:var(--c-primary-dark)}
.btn-ghost-dark{border-color:rgba(242,245,241,.35);color:var(--on-dark)}
.btn-ghost-dark:hover{border-color:var(--c-accent);color:var(--c-accent);background:rgba(214,244,81,.08)}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:700;font-size:15px;background:none;padding:0;border:0}
.btn-text .arrow{transition:transform var(--ease)}
.btn-text:hover{color:var(--c-primary-dark);box-shadow:inset 0 -2px 0 var(--c-accent)}
.btn-text:hover .arrow{transform:translateX(4px)}
.btn-block{width:100%}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;padding:6px 14px;border-radius:var(--r-pill);background:var(--c-primary-light);color:var(--c-primary-dark)}
.badge--accent{background:var(--c-accent-soft);color:#4A5A0B}
.badge--dark{background:rgba(15,178,126,.16);color:var(--c-accent)}
.badge--orange{background:rgba(255,107,53,.12);color:var(--c-orange-dark)}

/* ---------- 顶栏 ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:80;height:72px;display:flex;align-items:center;background:rgba(14,20,22,.62);border-bottom:1px solid rgba(255,255,255,.08);transition:height var(--ease),background var(--ease),border-color var(--ease),box-shadow var(--ease)}
.site-header.is-scrolled{height:60px;background:rgba(255,255,255,.97);border-bottom-color:var(--line);box-shadow:0 8px 24px rgba(14,20,22,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%}
.brand{display:flex;align-items:center;gap:10px;color:var(--on-dark);font-weight:800;font-size:19px;letter-spacing:-.01em}
.site-header.is-scrolled .brand{color:var(--t1)}
.brand:hover{color:var(--c-accent)}
.site-header.is-scrolled .brand:hover{color:var(--c-primary-dark)}
.logo-mark{width:34px;height:34px;border-radius:9px;background:var(--c-primary);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.logo-mark svg{width:20px;height:20px;display:block}
.brand small{display:block;font-size:11px;font-weight:600;letter-spacing:.14em;color:rgba(242,245,241,.6)}
.site-header.is-scrolled .brand small{color:var(--t3)}
.main-nav{display:flex;align-items:center;gap:4px;height:100%}
.nav-item{position:relative;height:100%;display:flex;align-items:center}
.nav-link{position:relative;display:inline-flex;align-items:center;height:100%;padding:0 15px;font-size:15px;font-weight:600;color:rgba(242,245,241,.86)}
.site-header.is-scrolled .nav-link{color:var(--t2)}
.nav-link::after{content:"";position:absolute;left:15px;right:15px;bottom:14px;height:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform var(--ease)}
.nav-link:hover{color:var(--c-accent)}
.site-header.is-scrolled .nav-link:hover{color:var(--c-primary-dark)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-accent)}
.site-header.is-scrolled .nav-link.is-active{color:var(--c-primary-dark)}
.nav-link.is-active::before{content:"";position:absolute;top:0;left:15px;right:15px;height:4px;background:var(--c-primary);border-radius:0 0 4px 4px}
.header-actions{display:flex;align-items:center;gap:14px}
.search-btn{width:40px;height:40px;border-radius:var(--r-pill);display:flex;align-items:center;justify-content:center;color:rgba(242,245,241,.86);border:1px solid rgba(255,255,255,.18);transition:all var(--ease)}
.site-header.is-scrolled .search-btn{color:var(--t2);border-color:var(--line)}
.search-btn:hover{color:var(--c-accent);border-color:var(--c-accent)}
.site-header.is-scrolled .search-btn:hover{color:var(--c-primary-dark);border-color:var(--c-primary)}
.search-btn svg{width:17px;height:17px}
.header-cta{min-height:40px;padding:0 20px;font-size:14px}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.2);flex-direction:column;align-items:center;justify-content:center;gap:5px}
.site-header.is-scrolled .nav-toggle{border-color:var(--line)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--on-dark);border-radius:2px;transition:all var(--ease)}
.site-header.is-scrolled .nav-toggle span{background:var(--t1)}

/* Mega */
.mega{position:absolute;top:calc(100% - 6px);left:50%;transform:translate(-50%,10px);width:820px;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-hover);padding:26px;opacity:0;visibility:hidden;transition:all var(--ease)}
.nav-item:hover .mega,.nav-item:focus-within .mega{opacity:1;visibility:visible;transform:translate(-50%,0)}
.mega-cols{display:grid;grid-template-columns:1.05fr 1.05fr .9fr;gap:26px}
.mega h4{font-size:13px;letter-spacing:.08em;color:var(--t3);text-transform:none;margin-bottom:14px;font-weight:700}
.mega-list li+li{margin-top:10px}
.mega-list a{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:600;color:var(--t1);padding:6px 8px;border-radius:10px}
.mega-list a:hover{color:var(--c-primary-dark);background:var(--c-primary-light);transform:translateX(2px)}
.mega-list .dot{width:8px;height:8px;border-radius:2px;background:var(--c-primary);flex:0 0 auto}
.mega-post{display:block;padding:10px 8px;border-radius:10px}
.mega-post:hover{background:var(--bg)}
.mega-post strong{display:block;font-size:14.5px;font-weight:600;color:var(--t1)}
.mega-post span{font-size:12.5px;color:var(--t3)}
.mega-card{border:1px solid var(--line);border-radius:14px;overflow:hidden;display:block}
.mega-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.mega-card p{font-size:14px;font-weight:700;color:var(--t1);padding:12px 14px;margin:0;display:flex;align-items:center;justify-content:space-between}
.mega-card:hover{box-shadow:var(--sh);border-color:var(--c-primary)}

/* 移动抽屉 */
.mobile-drawer{position:fixed;inset:0;background:var(--ink);z-index:90;padding:86px 24px 40px;overflow-y:auto;transform:translateX(100%);transition:transform .28s ease;visibility:hidden}
.mobile-drawer.is-open{transform:translateX(0);visibility:visible}
.mobile-drawer .m-close{position:absolute;top:20px;right:20px;width:44px;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.2);color:var(--on-dark);font-size:20px}
.m-drawer-brand{color:var(--on-dark);font-weight:800;font-size:18px;margin-bottom:26px}
.mobile-drawer a.m-link{display:block;padding:16px 4px;font-size:17px;font-weight:600;color:var(--on-dark);border-bottom:1px solid rgba(255,255,255,.08)}
.mobile-drawer a.m-link.is-active{color:var(--c-accent)}
.m-drawer-sub{margin-top:26px}
.m-drawer-sub h4{color:var(--on-dark-2);font-size:13px;letter-spacing:.08em;margin-bottom:12px}
.m-drawer-sub a{display:block;color:rgba(242,245,241,.78);font-size:15px;padding:8px 0}
.m-drawer-cta{margin-top:28px}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:660px;display:flex;align-items:center;padding:132px 0 88px;background:var(--ink);overflow:hidden}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(105deg,rgba(14,20,22,.86) 0%,rgba(14,20,22,.74) 52%,rgba(14,20,22,.62) 100%)}
.hero-inner{position:relative;z-index:2;width:100%}
.hero-copy{color:var(--on-dark)}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;padding:7px 15px;border-radius:var(--r-pill);background:rgba(15,178,126,.18);color:var(--c-accent);margin-bottom:22px}
.hero h1{font-size:44px;color:#fff;margin-bottom:18px}
.hero h1 .accent-line{display:block;height:4px;width:64px;background:var(--c-accent);border-radius:2px;margin-top:20px}
.hero-sub{font-size:18px;color:rgba(242,245,241,.82);max-width:520px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-trust{display:flex;flex-wrap:wrap;gap:0;font-size:14px;color:rgba(242,245,241,.7)}
.hero-trust li{display:flex;align-items:center}
.hero-trust li+li::before{content:"";width:1px;height:14px;background:rgba(242,245,241,.28);margin:0 14px}
.hero-visual{position:relative;margin-top:40px}
.metric-card{background:var(--ink-2);border:1px solid rgba(255,255,255,.1);border-radius:var(--r-card);padding:26px;box-shadow:0 24px 60px rgba(0,0,0,.35)}
.metric-card .metric-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.metric-card .metric-top span{font-size:13px;color:var(--on-dark-2);font-weight:600;letter-spacing:.06em}
.metric-row{display:flex;align-items:baseline;justify-content:space-between;padding:16px 0;border-top:1px solid rgba(255,255,255,.08)}
.metric-row:first-of-type{border-top:0}
.metric-row .k{font-size:14px;color:var(--on-dark-2)}
.metric-row .v{font-size:28px;font-weight:800;color:var(--c-accent);font-variant-numeric:tabular-nums}
.metric-row .v small{font-size:14px;color:var(--on-dark-2);font-weight:600;margin-left:2px}
.metric-note{margin-top:18px;font-size:13px;color:var(--on-dark-2);display:flex;align-items:center;gap:8px}
.metric-note::before{content:"";width:22px;height:1px;background:var(--c-accent)}

/* ---------- 锚点条 ---------- */
.anchor-bar{position:sticky;top:60px;z-index:40;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);box-shadow:0 6px 18px rgba(14,20,22,.04)}
.anchor-scroll{display:flex;gap:8px;overflow-x:auto;padding:12px 0;scrollbar-width:none}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-scroll a{flex:0 0 auto;font-size:14px;font-weight:600;color:var(--t2);padding:8px 14px;border-radius:var(--r-pill);border:1px solid transparent}
.anchor-scroll a:hover{color:var(--c-primary-dark);background:var(--c-primary-light)}
.anchor-scroll a.is-current{color:var(--c-primary-dark);border-color:var(--c-primary);box-shadow:inset 0 -3px 0 var(--c-accent)}

/* ---------- 信任条 ---------- */
.trust-band{background:var(--ink);padding:44px 0}
.trust-band .t-item{padding:8px 6px}
.trust-band .t-num{font-size:32px;font-weight:800;color:var(--c-accent);font-variant-numeric:tabular-nums;line-height:1.2}
.trust-band .t-num small{font-size:16px;margin-left:2px}
.trust-band .t-name{font-size:14px;color:var(--on-dark-2);margin-top:6px}
.trust-band .t-line{height:1px;background:rgba(255,255,255,.08);margin-top:16px}

/* ---------- 通用卡片 ---------- */
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh);overflow:hidden;display:flex;flex-direction:column;height:100%;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#D7DED6}
.card-media{aspect-ratio:16/9;overflow:hidden;border-radius:var(--r-img);margin:16px 16px 0;border:1px solid var(--line)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.card-body h3{font-size:19px;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:15px;color:var(--t2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:0}
.card-foot{margin-top:auto;padding:16px 22px 20px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line)}
.card-foot .meta{font-size:13px;color:var(--t3);display:flex;align-items:center;gap:10px}
.card-link{position:absolute;inset:0;z-index:3}
.card{position:relative}
.icon-box{width:52px;height:52px;border-radius:14px;background:var(--c-primary-light);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.icon-box svg{width:24px;height:24px;stroke:var(--c-primary-dark);fill:none;stroke-width:1.8}

/* 卖点区 */
.feature-major{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh);overflow:hidden;height:100%;display:flex;flex-direction:column}
.feature-major img{width:100%;aspect-ratio:16/10;object-fit:cover}
.feature-major .fm-body{padding:26px}
.feature-major .fm-body h3{font-size:22px;margin-bottom:10px}
.feature-major .fm-body p{color:var(--t2);font-size:15.5px}
.tick-list{margin-top:18px;border-top:1px solid var(--line);padding-top:16px}
.tick-list li{position:relative;padding-left:26px;font-size:15px;color:var(--t2);margin-bottom:10px}
.tick-list li:last-child{margin-bottom:0}
.tick-list li::before{content:"";position:absolute;left:0;top:9px;width:12px;height:7px;border-left:2px solid var(--c-primary);border-bottom:2px solid var(--c-primary);transform:rotate(-45deg)}
.mini-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;height:100%;box-shadow:var(--sh);transition:transform var(--ease),box-shadow var(--ease)}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.mini-card h3{font-size:18px;margin-bottom:10px}
.mini-card p{font-size:14.5px;color:var(--t2);margin:0}

/* 场景演示 */
.scene-row{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;padding:52px 0;border-top:1px solid var(--line)}
.scene-row:first-of-type{border-top:0;padding-top:0}
.scene-row.reverse .scene-media{order:2}
.scene-media{aspect-ratio:16/10;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line)}
.scene-media img{width:100%;height:100%;object-fit:cover}
.scene-copy h3{font-size:24px;margin-bottom:12px}
.scene-copy p{color:var(--t2);font-size:16px}
.scene-copy .tick-list{border-top:0;padding-top:0;margin-top:12px}
.scene-index{display:inline-block;font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--c-primary-dark);margin-bottom:12px}

/* 数据证据 */
.evidence-row{display:grid;grid-template-columns:200px 1fr auto;gap:24px;align-items:center;padding:22px 0;border-top:1px solid rgba(255,255,255,.08)}
.evidence-row:first-of-type{border-top:0}
.evidence-row .e-num{font-size:34px;font-weight:800;color:var(--c-accent);font-variant-numeric:tabular-nums;line-height:1.1}
.evidence-row .e-num small{display:block;font-size:13px;color:var(--on-dark-2);font-weight:600;margin-top:6px}
.evidence-row .e-desc{font-size:15.5px;color:var(--on-dark-2)}
.scale-line{width:180px;height:6px;border-radius:3px;background:rgba(255,255,255,.1);position:relative;overflow:hidden}
.scale-line i{position:absolute;left:0;top:0;bottom:0;background:var(--c-primary);border-radius:3px;display:block}
.case-track{display:flex;gap:20px;overflow-x:auto;padding:6px 4px 18px;scroll-snap-type:x mandatory;scrollbar-width:thin}
.case-track::-webkit-scrollbar{height:6px}
.case-track::-webkit-scrollbar-thumb{background:rgba(255,255,255,.18);border-radius:3px}
.case-card{flex:0 0 calc((100% - 60px)/3.5);min-width:250px;scroll-snap-align:start;background:var(--ink-2);border:1px solid rgba(255,255,255,.08);border-radius:var(--r-card);overflow:hidden;transition:transform var(--ease),border-color var(--ease)}
.case-card:hover{transform:translateY(-4px);border-color:rgba(214,244,81,.4)}
.case-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.case-card .cc-body{padding:18px 20px 22px}
.case-card h3{font-size:17px;color:var(--on-dark);margin-bottom:8px}
.case-card p{font-size:13.5px;color:var(--on-dark-2);margin-bottom:14px}
.case-card .badge{background:rgba(214,244,81,.14);color:var(--c-accent)}

/* 价格 */
.price-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:30px 26px;height:100%;display:flex;flex-direction:column;box-shadow:var(--sh);transition:transform var(--ease),box-shadow var(--ease)}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.price-card.is-featured{border:2px solid var(--c-primary);transform:translateY(-8px);position:relative;box-shadow:var(--sh-hover)}
.price-card.is-featured:hover{transform:translateY(-12px)}
.price-flag{position:absolute;top:-14px;right:22px;background:var(--c-accent);color:#3F4D08;font-size:13px;font-weight:800;padding:6px 14px;border-radius:var(--r-pill)}
.price-card h3{font-size:21px;margin-bottom:8px}
.price-card .price-line{font-size:34px;font-weight:800;color:var(--t1);font-variant-numeric:tabular-nums;margin:16px 0 4px}
.price-card .price-line span{font-size:15px;color:var(--t3);font-weight:600}
.price-card .price-note{font-size:13.5px;color:var(--t3);margin-bottom:18px}
.price-card .tick-list{border-top:1px solid var(--line);margin-top:4px;margin-bottom:26px}
.price-card .btn{margin-top:auto}
.price-foot{text-align:center;margin-top:34px;font-size:15px;color:var(--t2)}

/* FAQ */
.accordion.faq-list{border:0;background:transparent;max-width:860px;margin:0 auto}
.faq-list .accordion-item{border:1px solid var(--line);border-radius:14px;background:var(--white);margin-bottom:14px;overflow:hidden;position:relative;transition:box-shadow var(--ease),border-color var(--ease)}
.faq-list .accordion-item:hover{box-shadow:var(--sh)}
.faq-list .accordion-item.is-active{border-color:#D3E9DF;box-shadow:var(--sh)}
.faq-list .accordion-item.is-active::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--c-primary)}
.faq-list .accordion-title{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:22px 24px;font-size:17px;font-weight:700;color:var(--t1);border:0;background:transparent}
.faq-list .accordion-title:hover{background:#FBFCFA;color:var(--t1)}
.faq-list .accordion-item.is-active .accordion-title{color:var(--c-primary-dark)}
.faq-list .accordion-title::before{content:none}
.faq-sign{position:relative;flex:0 0 auto;width:20px;height:20px}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;transition:transform var(--ease)}
.faq-sign::before{left:0;right:0;top:9px;height:2px}
.faq-sign::after{top:0;bottom:0;left:9px;width:2px}
.faq-list .accordion-item.is-active .faq-sign::after{transform:scaleY(0)}
.faq-list .accordion-content{padding:0 24px 24px;color:var(--t2);font-size:15.5px;border:0;background:transparent;display:none}
.faq-list .accordion-item.is-active .accordion-content{display:block}

/* 资讯列表 */
.news-lead{display:grid;grid-template-columns:1.1fr 1fr;gap:0;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh);position:relative;transition:transform var(--ease),box-shadow var(--ease)}
.news-lead:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.news-lead .nl-media{aspect-ratio:16/10;overflow:hidden}
.news-lead .nl-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-lead:hover .nl-media img{transform:scale(1.04)}
.news-lead .nl-body{padding:30px 30px 26px;display:flex;flex-direction:column}
.news-lead h3{font-size:24px;line-height:1.45;margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-lead p{color:var(--t2);font-size:15.5px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-lead .nl-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:14px;padding-top:20px}
.post-card .card-body h3{font-size:17.5px}
.post-date{font-size:13px;color:var(--t3);font-variant-numeric:tabular-nums}
.empty-state{max-width:520px;margin:0 auto;text-align:center;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:48px 32px;box-shadow:var(--sh)}
.empty-state .es-icon{width:64px;height:64px;border-radius:20px;background:var(--c-primary-light);margin:0 auto 20px;display:flex;align-items:center;justify-content:center}
.empty-state .es-icon::before{content:"";width:22px;height:22px;border:2px solid var(--c-primary);border-radius:6px}
.empty-state p{color:var(--t2);margin-bottom:22px}

/* 联系区 */
.contact-wrap{display:grid;grid-template-columns:1fr 1.15fr;gap:40px;align-items:start}
.contact-info{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:32px;box-shadow:var(--sh)}
.contact-info h3{font-size:21px;margin-bottom:18px}
.info-item{display:flex;gap:14px;padding:16px 0;border-top:1px solid var(--line)}
.info-item:first-of-type{border-top:0;padding-top:0}
.info-icon{width:40px;height:40px;border-radius:12px;background:var(--c-primary-light);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.info-icon svg{width:19px;height:19px;stroke:var(--c-primary-dark);fill:none;stroke-width:1.8}
.info-item .k{font-size:13px;color:var(--t3)}
.info-item .v{font-size:16px;font-weight:700;color:var(--t1)}
.form-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:32px;box-shadow:var(--sh)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:14px;font-weight:600;color:var(--t2)}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:var(--r-btn);background:#FBFCFA;padding:0 14px;height:48px;font-size:15px;transition:all var(--ease)}
.field textarea{height:auto;padding:12px 14px;min-height:112px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 2px var(--c-accent)}
.form-tip{font-size:13px;color:var(--t3);margin-top:14px}
.form-note{font-size:12.5px;color:var(--t3);margin-top:6px}

/* 浮动 CTA */
.float-cta{position:fixed;right:28px;bottom:28px;z-index:70;display:flex;align-items:center;gap:10px;opacity:0;visibility:hidden;transform:translateY(14px);transition:all .28s ease}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta .fc-pill{display:flex;align-items:center;gap:10px;background:var(--white);border:1px solid var(--line);border-radius:var(--r-pill);padding:8px 10px 8px 20px;box-shadow:var(--sh-hover)}
.float-cta .fc-pill span{font-size:14px;font-weight:700;color:var(--t1)}
.float-cta .fc-btn{min-height:42px;padding:0 20px;font-size:14px}
.float-cta .fc-round{width:52px;height:52px;border-radius:var(--r-pill);background:var(--ink);display:flex;align-items:center;justify-content:center;color:var(--c-accent);box-shadow:var(--sh-hover)}
.float-cta .fc-round svg{width:20px;height:20px;stroke:var(--c-accent);fill:none;stroke-width:1.8}

/* CTA 横幅 */
.cta-banner{background:var(--ink);position:relative;overflow:hidden;padding:72px 0}
.cta-banner .cta-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.png');background-size:cover;background-position:center;opacity:.28}
.cta-banner .cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-banner h2{font-size:30px;color:#fff}
.cta-banner p{color:var(--on-dark-2);margin-top:10px;font-size:16px}
.cta-banner .cta-line{width:80px;height:3px;background:var(--c-accent);border-radius:2px;margin-top:18px}

/* 页脚 */
.site-footer{background:var(--ink);color:var(--on-dark-2);padding:72px 0 0;border-top:1px solid var(--c-accent)}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:52px}
.site-footer .f-brand{display:flex;align-items:center;gap:10px;color:var(--on-dark);font-weight:800;font-size:19px;margin-bottom:16px}
.site-footer .f-desc{font-size:14.5px;line-height:1.9;color:var(--on-dark-2);max-width:320px}
.site-footer h4{color:var(--on-dark);font-size:15px;margin-bottom:18px;font-weight:700}
.site-footer li{margin-bottom:11px}
.site-footer a{color:var(--on-dark-2);font-size:14.5px}
.site-footer a:hover{color:#fff;text-decoration:underline}
.footer-contact li{font-size:14.5px;color:var(--on-dark-2);margin-bottom:12px;display:flex;gap:10px}
.footer-contact .dot{width:6px;height:6px;border-radius:2px;background:var(--c-accent);flex:0 0 auto;margin-top:9px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0 30px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px}

/* 响应式 */
@media screen and (max-width:1199px){
.hero h1{font-size:38px}
.mega{width:700px}
}
@media screen and (max-width:991px){
:root{--sec-pad:72px}
h1{font-size:32px}
h2{font-size:26px}
.hero{padding:118px 0 72px;min-height:0}
.hero h1{font-size:32px}
.hero-sub{font-size:16.5px}
.main-nav{display:none}
.nav-toggle{display:flex}
.header-actions .search-btn{display:none}
.mega{display:none}
.feature-major{margin-bottom:22px}
.scene-row{grid-template-columns:1fr;gap:26px;padding:38px 0}
.scene-row.reverse .scene-media{order:0}
.contact-wrap{grid-template-columns:1fr}
.news-lead{grid-template-columns:1fr}
.evidence-row{grid-template-columns:1fr;gap:10px}
.scale-line{width:100%}
.footer-top{grid-template-columns:1fr 1fr}
.case-card{flex:0 0 78%}
}
@media screen and (max-width:767px){
:root{--sec-pad:56px}
body{font-size:16px}
h1{font-size:28px}
h2{font-size:24px}
h3{font-size:18px}
h4{font-size:16px}
.container{padding:0 18px}
.medium-6,.medium-4,.medium-8{width:100%}
.hero{padding:110px 0 60px}
.hero h1{font-size:28px}
.hero-actions .btn{width:100%}
.hero-trust li+li::before{margin:0 10px}
.trust-band .t-num{font-size:26px}
.anchor-bar{top:56px}
.form-grid{grid-template-columns:1fr}
.site-header{height:64px}
.site-header.is-scrolled{height:56px}
.cta-banner h2{font-size:24px}
.footer-top{grid-template-columns:1fr 1fr;gap:28px}
.float-cta{left:0;right:0;bottom:0;padding:10px 14px;background:rgba(255,255,255,.98);border-top:1px solid var(--line);gap:10px;justify-content:space-between}
.float-cta .fc-pill{border:0;box-shadow:none;padding:0;flex:1 1 auto}
.float-cta .fc-pill span{display:none}
.float-cta .fc-btn{width:100%}
.float-cta .fc-round{width:48px;height:48px}
.site-footer{padding-bottom:72px}
.footer-bottom{flex-direction:column;align-items:flex-start}
}
@media screen and (max-width:479px){
.hero h1{font-size:25px}
.trust-band .t-item{text-align:left}
.case-card{flex:0 0 88%}
}

/* roulang page: article */
:root{
  --brand:#0FB27E;--brand-d:#0A7D5A;--brand-l:#E4F7F0;
  --lemon:#D6F451;--orange:#FF6B35;--orange-d:#E85A25;
  --ink:#0E1416;--ink-2:#131A1D;--bg:#F5F6F2;--white:#FFFFFF;
  --text:#14191C;--muted:#5A666B;--faint:#8B9599;--line:#E3E7E1;
  --on-dark:#F2F5F1;--on-dark-2:#A9B6B2;
  --r-card:16px;--r-img:12px;--r-btn:10px;--r-pill:999px;
  --sh:0 1px 2px rgba(14,20,22,.04),0 10px 28px rgba(14,20,22,.06);
  --sh-h:0 6px 12px rgba(14,20,22,.06),0 18px 40px rgba(14,20,22,.10);
  --pad-sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:17px;line-height:1.8;color:var(--text);background:var(--bg);padding-bottom:0}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.32;letter-spacing:-.01em}
p{margin:0 0 18px}
ul,ol{margin:0 0 18px;padding-left:20px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;
  border-radius:var(--r-btn);font-size:15px;font-weight:700;border:1.5px solid transparent;transition:all .22s ease;white-space:nowrap}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-d);transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,107,53,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-outline{background:transparent;border-color:var(--brand);color:var(--brand-d)}
.btn-outline:hover{background:var(--brand-l)}
.btn-ghost-light{border-color:rgba(255,255,255,.28);color:var(--on-dark)}
.btn-ghost-light:hover{background:rgba(255,255,255,.10)}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand-d);font-weight:700;font-size:15px}
.btn-text span{transition:transform .22s ease}
.btn-text:hover span{transform:translateX(4px)}
.btn:focus-visible,.nav-link:focus-visible,.nav-toggle:focus-visible,a:focus-visible{outline:2px solid var(--lemon);outline-offset:2px}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--r-pill);
  font-size:13px;font-weight:700;background:var(--brand-l);color:var(--brand-d);line-height:1.2}
.badge-lemon{background:rgba(214,244,81,.22);color:#4C5A10}
.badge-dark{background:rgba(255,255,255,.10);color:var(--lemon)}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:90;background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line);transition:box-shadow .22s ease}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(14,20,22,.07)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .22s ease}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:var(--ink);white-space:nowrap}
.logo-mark{width:32px;height:32px;border-radius:9px;background:var(--brand);display:grid;place-items:center;flex:none}
.logo-mark svg{width:18px;height:18px}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-item{position:relative}
.nav-link{position:relative;display:block;padding:10px 14px;border-radius:10px;font-size:15px;font-weight:600;
  color:var(--muted);transition:color .22s ease,background .22s ease}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-d);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:8px}
.icon-btn{width:42px;height:42px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;
  color:var(--muted);transition:all .22s ease;background:#fff}
.icon-btn:hover{color:var(--brand-d);border-color:var(--brand);background:var(--brand-l)}
.icon-btn svg{width:18px;height:18px}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;
  border:1px solid var(--line);border-radius:12px;background:#fff;padding:0 11px}
.nav-toggle span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:.22s ease}

/* Mega 面板 */
.mega{position:absolute;top:calc(100% + 14px);left:50%;width:840px;padding:26px;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-h);z-index:95;
  transform:translateX(-50%) translateY(8px);opacity:0;visibility:hidden;transition:all .22s ease}
.nav-item:hover .mega,.nav-item:focus-within .mega{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.mega-cols{display:grid;grid-template-columns:1fr 1.1fr 1fr;gap:26px}
.mega h4{font-size:13px;color:var(--faint);letter-spacing:.06em;margin-bottom:12px;text-transform:none}
.mega-list{list-style:none;margin:0;padding:0}
.mega-list li{margin-bottom:6px}
.mega-list a{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:10px;font-size:15px;color:var(--text);transition:all .22s ease}
.mega-list a:hover{color:var(--brand-d);background:var(--brand-l);transform:translateX(2px)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--brand);flex:none;display:inline-block}
.mega-post{display:block;padding:9px 10px;border-radius:10px;transition:all .22s ease}
.mega-post strong{display:block;font-size:14.5px;font-weight:700;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mega-post span{display:block;font-size:13px;color:var(--faint)}
.mega-post:hover{background:var(--brand-l);transform:translateX(2px)}
.mega-post:hover strong{color:var(--brand-d)}
.mega-card{display:block;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:all .22s ease}
.mega-card img{aspect-ratio:16/9;object-fit:cover;width:100%}
.mega-card p{margin:0;padding:12px 14px;font-size:14px;font-weight:700;color:var(--brand-d);display:flex;justify-content:space-between}
.mega-card:hover{box-shadow:var(--sh-h);transform:translateY(-2px)}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--on-dark-2);margin-bottom:18px}
.breadcrumb a{color:var(--on-dark-2);transition:color .22s ease}
.breadcrumb a:hover{color:var(--lemon)}
.breadcrumb .sep{color:var(--lemon)}
.breadcrumb .current{color:var(--brand);font-weight:700;max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.article-head{position:relative;background-image:linear-gradient(180deg,rgba(14,20,22,.86),rgba(14,20,22,.80)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;color:var(--on-dark);padding:56px 0 64px;overflow:hidden}
.article-head::after{content:"";position:absolute;right:-40px;bottom:-60px;width:280px;height:280px;
  background:repeating-linear-gradient(90deg,rgba(214,244,81,.30) 0 1px,transparent 1px 22px);
  transform:rotate(-12deg);pointer-events:none}
.article-head .container{position:relative;z-index:2}
.article-head h1{font-size:34px;font-weight:800;color:#fff;max-width:900px;margin:16px 0 18px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:14px;color:var(--on-dark-2)}
.article-meta .sep{width:1px;height:14px;background:rgba(255,255,255,.22)}
.article-meta time{color:var(--on-dark);font-variant-numeric:tabular-nums}

/* ---------- 文章主体布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:36px;padding-top:48px;padding-bottom:var(--pad-sec)}
.article-main{min-width:0}
.article-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh);padding:36px 38px}
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:var(--text);overflow-wrap:break-word}
.article-body h1{font-size:30px;margin:0 0 18px}
.article-body h2{position:relative;font-size:24px;margin:40px 0 14px;padding-left:14px}
.article-body h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand)}
.article-body h3{font-size:21px;margin:30px 0 12px;color:var(--ink)}
.article-body h4{font-size:17px;margin:22px 0 10px}
.article-body p{margin:0 0 18px}
.article-body a{color:var(--brand-d);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--orange)}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 18px}
.article-body li{margin-bottom:8px}
.article-body li::marker{color:var(--brand)}
.article-body img{border-radius:var(--r-img);border:1px solid var(--line);margin:22px 0 8px;width:100%}
.article-body blockquote{margin:24px 0;padding:18px 22px;background:var(--brand-l);border-left:4px solid var(--lemon);
  border-radius:0 12px 12px 0;color:#1B2A24}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px}
.article-body th{background:var(--ink);color:#fff;text-align:left;padding:12px 14px;font-weight:700}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line)}
.article-body tbody tr:nth-child(even){background:var(--bg)}
.article-body code{background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:14px}

.empty-state{text-align:center;padding:48px 20px}
.empty-icon{width:56px;height:56px;border-radius:16px;border:2px dashed var(--line);margin:0 auto 16px}
.empty-state p{color:var(--muted)}

/* 文章尾部 */
.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin:32px 0 0;padding-top:26px;border-top:1px solid var(--line)}
.article-foot{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:30px}
.foot-card{display:block;background:var(--white);border:1px solid var(--line);border-radius:14px;padding:18px 20px;transition:all .22s ease}
.foot-card span{display:block;font-size:13px;color:var(--faint);margin-bottom:6px}
.foot-card strong{display:block;font-size:16px;font-weight:700;color:var(--text);transition:color .22s ease}
.foot-card:hover{box-shadow:var(--sh-h);transform:translateY(-2px);border-color:var(--brand)}
.foot-card:hover strong{color:var(--brand-d)}
.article-source{font-size:13px;color:var(--faint);margin-top:20px}

/* ---------- 侧栏 ---------- */
.article-side{min-width:0;position:sticky;top:96px;align-self:start;display:flex;flex-direction:column;gap:20px}
.side-cta{background:var(--ink);color:var(--on-dark);border-radius:var(--r-card);padding:26px;border:1px solid rgba(255,255,255,.08)}
.side-cta h3{font-size:19px;color:#fff;margin-bottom:10px}
.side-cta p{font-size:14px;color:var(--on-dark-2);margin-bottom:18px;line-height:1.75}
.side-cta .btn{width:100%;margin-bottom:10px}
.side-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh)}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--brand)}
.side-list{list-style:none;margin:0;padding:0}
.side-list li{margin-bottom:6px}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 12px;border-radius:10px;
  font-size:15px;color:var(--muted);transition:all .22s ease}
.side-list a:hover{background:var(--brand-l);color:var(--brand-d);transform:translateX(2px)}
.side-post{display:flex;gap:12px;padding:10px;border-radius:12px;transition:all .22s ease}
.side-post:hover{background:var(--brand-l);transform:translateX(2px)}
.side-post .thumb{width:86px;height:56px;flex:none;border-radius:10px;overflow:hidden;border:1px solid var(--line)}
.side-post .thumb img{width:100%;height:100%;object-fit:cover}
.side-post strong{display:block;font-size:14.5px;font-weight:700;line-height:1.5;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.side-post time{font-size:12.5px;color:var(--faint);font-variant-numeric:tabular-nums}
.back-list{display:flex;align-items:center;justify-content:center;gap:6px;min-height:46px;border:1.5px solid var(--brand);
  border-radius:var(--r-btn);color:var(--brand-d);font-weight:700;font-size:15px;transition:all .22s ease}
.back-list:hover{background:var(--brand-l)}

/* ---------- 相关推荐 ---------- */
.section{padding:var(--pad-sec) 0}
.section-alt{background:var(--white)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.sec-head h2{font-size:32px}
.sec-head p{color:var(--muted);font-size:15px;margin:8px 0 0}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh);transition:all .22s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:#CFE6DC}
.card .cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg)}
.card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .cover img{transform:scale(1.04)}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:19px;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14.5px;color:var(--muted);margin:0 0 18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--faint)}
.card-meta time{font-variant-numeric:tabular-nums}
.card-meta .go{color:var(--brand-d);font-weight:700}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.accordion{border:0;background:transparent;margin:0}
.accordion .accordion-item{border:1px solid var(--line);border-radius:14px;background:#fff;margin-bottom:12px;overflow:hidden;transition:box-shadow .22s ease}
.accordion .accordion-item.is-active{border-left:4px solid var(--brand);box-shadow:var(--sh)}
.accordion .accordion-title{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;
  font-size:16.5px;font-weight:700;color:var(--text);border:0;background:transparent}
.accordion .accordion-title::before{display:none}
.accordion .accordion-title::after{content:"+";font-size:22px;line-height:1;color:var(--brand);font-weight:400;transition:transform .22s ease}
.accordion .accordion-item.is-active .accordion-title{color:var(--brand-d)}
.accordion .accordion-item.is-active .accordion-title::after{content:"–";transform:rotate(180deg)}
.accordion .accordion-content{border:0;padding:0 22px 20px;font-size:15.5px;color:var(--muted);line-height:1.85;background:transparent}
.accordion .accordion-content p:last-child{margin-bottom:0}

/* ---------- CTA 横幅 ---------- */
.cta-band{position:relative;color:var(--on-dark);background-image:linear-gradient(180deg,rgba(14,20,22,.90),rgba(14,20,22,.84)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;border-top:1px solid var(--lemon)}
.cta-band .inner{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:64px 0}
.cta-band h2{font-size:30px;color:#fff;margin-bottom:10px}
.cta-band p{color:var(--on-dark-2);margin:0;font-size:15.5px}
.cta-actions{display:flex;gap:12px;flex:none}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--on-dark-2);border-top:1px solid var(--lemon);padding:64px 0 26px;font-size:14.5px}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.08)}
.f-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff;margin-bottom:14px}
.f-brand .logo-mark{background:var(--lemon)}
.f-desc{line-height:1.85;margin:0;max-width:330px}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:16px}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin-bottom:10px}
.site-footer a{color:var(--on-dark-2);transition:color .22s ease}
.site-footer a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;line-height:1.7}
.footer-contact .dot{margin-top:8px;background:var(--lemon)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;padding-top:22px;font-size:13px;color:#7C8A87}

/* ---------- 浮动 CTA ---------- */
.float-cta{position:fixed;right:24px;bottom:26px;z-index:80;display:flex;gap:8px;padding:8px;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-pill);box-shadow:var(--sh-h);opacity:0;visibility:hidden;
  transform:translateY(12px);transition:all .28s ease}
.float-cta.is-on{opacity:1;visibility:visible;transform:none}
.float-cta .btn{min-height:42px;padding:0 18px;font-size:14px;border-radius:var(--r-pill)}
.mobile-bar{display:none}

@media (max-width:1199px){
  .article-head h1{font-size:30px}
}
@media (max-width:991px){
  :root{--pad-sec:72px}
  .nav-toggle{display:flex}
  .main-nav{position:fixed;left:0;right:0;top:60px;bottom:0;display:block;background:var(--ink);padding:16px 20px 40px;
    overflow-y:auto;margin:0;transform:translateY(-8px);opacity:0;visibility:hidden;transition:all .22s ease;z-index:88}
  .site-header.nav-open .main-nav{opacity:1;visibility:visible;transform:none}
  .nav-item{border-bottom:1px solid rgba(255,255,255,.08)}
  .nav-link{color:var(--on-dark);padding:16px 6px;border-radius:0;font-size:17px}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--lemon)}
  .nav-link.is-active::after{display:none}
  .mega{position:static;transform:none;width:auto;opacity:1;visibility:visible;display:none;background:transparent;
    border:0;box-shadow:none;padding:6px 0 16px}
  .nav-item.open .mega{display:block}
  .mega-cols{grid-template-columns:1fr;gap:18px}
  .mega h4{color:#7C8A87}
  .mega-list a{color:var(--on-dark);padding:7px 6px}
  .mega-list a:hover{background:rgba(255,255,255,.06);color:var(--lemon)}
  .mega-post strong{color:#fff}
  .mega-post:hover{background:rgba(255,255,255,.06)}
  .mega-card{border-color:rgba(255,255,255,.14)}
  .mega-card p{color:var(--lemon);background:transparent}
  .article-layout{grid-template-columns:1fr;gap:28px}
  .article-side{position:static;top:auto}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px}
  .cta-band .inner{flex-direction:column;align-items:flex-start;padding:52px 0}
}
@media (max-width:767px){
  :root{--pad-sec:56px}
  body{font-size:16px}
  .header-actions .icon-btn{display:none}
  .article-head{padding:36px 0 44px}
  .article-head h1{font-size:26px}
  .article-card{padding:24px 20px}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:18px}
  .article-body table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;white-space:nowrap}
  .article-foot{grid-template-columns:1fr}
  .sec-head{flex-direction:column;align-items:flex-start}
  .sec-head h2{font-size:24px}
  .grid-3{grid-template-columns:1fr}
  .cta-band h2{font-size:23px}
  .cta-actions{flex-direction:column;width:100%}
  .cta-actions .btn{width:100%;min-height:48px}
  .footer-top{grid-template-columns:1fr}
  .site-footer{padding-bottom:86px}
  .float-cta{display:none}
  .mobile-bar{display:flex;position:fixed;left:0;right:0;bottom:0;height:56px;z-index:85;background:rgba(14,20,22,.97);
    border-top:1px solid rgba(214,244,81,.35);align-items:center;gap:10px;padding:0 14px}
  .mobile-bar .btn{flex:1;min-height:42px;font-size:15px;border-radius:10px}
  .mobile-bar .icon-btn{width:44px;height:42px;border-radius:10px;border-color:rgba(255,255,255,.2);background:transparent;color:var(--on-dark)}
}
@media (max-width:479px){
  .container{padding:0 16px}
  .brand{font-size:15.5px}
  .brand .brand-text{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .article-head h1{font-size:22px}
  .article-card{padding:20px 16px}
  .article-body{font-size:16px}
}

/* roulang page: category1 */
:root{
  --teal:#0FB27E;
  --teal-d:#0A7D5A;
  --teal-l:#E4F7F0;
  --lemon:#D6F451;
  --orange:#FF6B35;
  --orange-d:#E85C28;
  --ink:#0E1416;
  --ink-2:#131A1D;
  --bg:#F5F6F2;
  --white:#FFFFFF;
  --text:#14191C;
  --muted:#5A666B;
  --faint:#8B9599;
  --line:#E3E7E1;
  --on-dark:#F2F5F1;
  --on-dark-muted:#A9B6B2;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,20,22,.04),0 10px 28px rgba(14,20,22,.06);
  --sh-2:0 6px 12px rgba(14,20,22,.06),0 18px 40px rgba(14,20,22,.10);
  --t:.22s ease;
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--teal);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--teal-d)}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:800;letter-spacing:-.01em;line-height:1.3}
h1{font-size:44px}
h2{font-size:32px}
h3{font-size:21px}
h4{font-size:17px}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
:focus-visible{outline:2px solid var(--lemon);outline-offset:2px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--white{background:var(--white)}
.section--dark{background:var(--ink);color:var(--on-dark)}
.section--dark h2,.section--dark h3,.section--dark h4{color:var(--on-dark)}
.section--dark p{color:var(--on-dark-muted)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--teal-d);text-transform:none}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--lemon)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--muted);font-size:17px}
.section--dark .section-head p{color:var(--on-dark-muted)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 24px;border-radius:var(--r-btn);font-weight:700;font-size:16px;line-height:1;transition:transform var(--t),background var(--t),box-shadow var(--t),color var(--t),border-color var(--t);border:1.5px solid transparent}
.btn-sm{min-height:42px;padding:0 18px;font-size:15px}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 6px 16px rgba(255,107,53,.22)}
.btn-primary:hover{background:var(--orange-d);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(255,107,53,.2)}
.btn-ghost{background:transparent;border-color:var(--teal);color:var(--teal-d)}
.btn-ghost:hover{background:var(--teal-l);color:var(--teal-d)}
.btn-ghost:active{background:#d6f1e6}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--teal-d);font-weight:700;padding:4px 0;border-bottom:2px solid transparent}
.btn-text span{transition:transform var(--t)}
.btn-text:hover{color:var(--teal-d);border-bottom-color:var(--lemon)}
.btn-text:hover span{transform:translateX(4px)}
.on-dark .btn-ghost{border-color:rgba(255,255,255,.34);color:var(--on-dark)}
.on-dark .btn-ghost:hover{background:rgba(255,255,255,.08);color:#fff}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow var(--t)}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(14,20,22,.06)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height var(--t)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text);font-weight:800;font-size:19px;letter-spacing:-.01em}
.brand:hover{color:var(--text)}
.logo-mark{width:34px;height:34px;border-radius:10px;background:var(--lemon);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.logo-mark svg{width:19px;height:19px}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:12px}
.nav-item{position:relative}
.nav-link{display:inline-flex;align-items:center;height:72px;padding:0 16px;font-size:16px;font-weight:600;color:var(--text);position:relative;transition:height var(--t),color var(--t)}
.site-header.is-scrolled .nav-link{height:60px}
.nav-link::after{content:"";position:absolute;left:16px;right:16px;bottom:16px;height:2px;background:var(--teal);transform:scaleX(0);transform-origin:left;transition:transform var(--t)}
.nav-link:hover{color:var(--teal-d)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--teal-d)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active::before{content:"";position:absolute;top:0;left:16px;width:22px;height:4px;background:var(--teal);border-radius:0 0 4px 4px}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.icon-btn{width:42px;height:42px;border-radius:var(--r-btn);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--muted);transition:all var(--t);background:#fff}
.icon-btn:hover{color:var(--teal-d);border-color:var(--teal);background:var(--teal-l)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:5px;background:#fff}
.nav-toggle i{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;transition:transform var(--t),opacity var(--t)}
.nav-toggle.is-on i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-on i:nth-child(2){opacity:0}
.nav-toggle.is-on i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Mega 面板 */
.mega{position:absolute;top:calc(100% + 8px);left:50%;transform:translate(-50%,10px);width:820px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-2);padding:26px;opacity:0;visibility:hidden;transition:opacity var(--t),transform var(--t),visibility var(--t)}
.nav-item:hover .mega,.nav-item:focus-within .mega{opacity:1;visibility:visible;transform:translate(-50%,0)}
.mega-cols{display:grid;grid-template-columns:1.1fr 1.3fr 1fr;gap:28px}
.mega h4{font-size:13px;letter-spacing:.08em;color:var(--faint);font-weight:700;margin-bottom:14px}
.mega-list li+li{margin-top:10px}
.mega-list a{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:600;color:var(--text);transition:color var(--t),transform var(--t)}
.mega-list a:hover{color:var(--teal-d);transform:translateX(2px)}
.mega-list .dot{width:8px;height:8px;border-radius:50%;background:var(--lemon);flex:0 0 auto}
.mega-post{display:block;padding:12px 14px;border-radius:12px;background:var(--bg);margin-bottom:10px;transition:background var(--t),transform var(--t)}
.mega-post:hover{background:var(--teal-l);transform:translateX(2px)}
.mega-post strong{display:block;font-size:15px;color:var(--text);font-weight:700}
.mega-post span{display:block;font-size:13px;color:var(--muted);margin-top:2px}
.mega-card{display:block;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff}
.mega-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0}
.mega-card p{margin:0;padding:12px 14px;font-size:14px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:8px}
.mega-card:hover p{color:var(--teal-d)}

/* 移动抽屉 */
.mobile-drawer{display:none;background:var(--ink);color:var(--on-dark);border-top:1px solid rgba(255,255,255,.08);padding:18px 20px 26px}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{color:var(--on-dark);display:block;padding:14px 0;font-size:16px;font-weight:600;border-bottom:1px solid rgba(255,255,255,.08)}
.mobile-drawer a.is-active{color:var(--lemon)}
.mobile-drawer .drawer-cta{margin-top:18px}

/* ---------- 分类页 Hero ---------- */
.cat-hero{position:relative;background:var(--ink) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;color:var(--on-dark);overflow:hidden}
.cat-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(104deg,rgba(14,20,22,.90) 0%,rgba(14,20,22,.78) 52%,rgba(14,20,22,.70) 100%)}
.cat-hero .hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:44px;align-items:end;min-height:400px;padding-top:52px;padding-bottom:56px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--on-dark-muted);margin-bottom:20px}
.crumb a{color:var(--on-dark-muted)}
.crumb a:hover{color:#fff}
.crumb .sep{color:var(--lemon)}
.crumb .now{color:var(--lemon);font-weight:700}
.cat-hero h1{font-size:44px;line-height:1.2;margin-bottom:16px;color:#fff}
.cat-hero h1 em{font-style:normal;color:var(--lemon)}
.hero-sub{font-size:17px;color:var(--on-dark-muted);max-width:620px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:22px;font-size:14px;color:var(--on-dark-muted)}
.hero-trust span{display:flex;align-items:center;gap:8px}
.hero-trust span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal);flex:0 0 auto}
.hero-panel{background:rgba(19,26,29,.9);border:1px solid rgba(255,255,255,.08);border-radius:var(--r-card);padding:22px}
.hero-panel h3{font-size:15px;color:var(--on-dark);margin-bottom:16px;letter-spacing:.02em}
.hp-row{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:12px 0;border-top:1px solid rgba(255,255,255,.08)}
.hp-row:first-of-type{border-top:none;padding-top:0}
.hp-num{font-size:24px;font-weight:800;color:var(--lemon);line-height:1.2}
.hp-label{font-size:13px;color:var(--on-dark-muted);text-align:right}
.hero-panel .hp-foot{display:block;margin-top:16px;font-size:13px;color:var(--on-dark-muted);border-top:1px solid rgba(255,255,255,.08);padding-top:14px}

/* ---------- 数据条 ---------- */
.metric-bar{background:var(--ink-2);color:var(--on-dark);border-top:1px solid rgba(255,255,255,.06)}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.metric{padding:30px 26px;border-left:1px solid rgba(255,255,255,.08)}
.metric:first-child{border-left:none}
.metric b{display:block;font-size:30px;font-weight:800;color:var(--lemon);line-height:1.2}
.metric span{display:block;font-size:14px;color:var(--on-dark-muted);margin-top:6px}

/* ---------- 图文交替 ---------- */
.zig{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;padding:56px 0}
.zig+.zig{border-top:1px solid var(--line)}
.zig-media{position:relative;overflow:hidden;border-radius:var(--r-img);border:1px solid var(--line);background:#fff}
.zig-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform var(--t)}
.zig-media:hover img{transform:scale(1.04)}
.zig-body h3{margin-bottom:12px}
.zig-body p{color:var(--muted)}
.zig-list{margin:18px 0 22px}
.zig-list li{position:relative;padding-left:24px;margin-bottom:10px;color:var(--text);font-size:16px}
.zig-list li::before{content:"";position:absolute;left:0;top:10px;width:12px;height:2px;background:var(--teal)}
.zig.reverse .zig-media{order:2}
.zig.reverse .zig-body{order:1}

/* ---------- 规格对照表 ---------- */
.spec-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--r-card)}
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;min-width:760px}
.spec-col{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px}
.spec-col.is-feature{border-color:var(--teal);box-shadow:var(--sh-1)}
.spec-col h3{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.spec-col .spec-tag{display:inline-block;font-size:13px;font-weight:700;padding:4px 12px;border-radius:var(--r-pill);background:var(--teal-l);color:var(--teal-d);margin-bottom:16px}
.spec-col.is-feature .spec-tag{background:var(--lemon);color:var(--ink)}
.spec-table{width:100%;border-collapse:collapse;font-size:15px}
.spec-table caption{text-align:left;font-size:13px;color:var(--faint);padding-bottom:10px}
.spec-table th,.spec-table td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.spec-table tbody tr:nth-child(odd){background:var(--bg)}
.spec-table thead th{background:var(--ink);color:#fff;font-weight:700;font-size:14px;border-bottom:none}
.spec-table td:first-child{color:var(--muted);width:42%}
.spec-note{margin-top:18px;font-size:14px;color:var(--muted)}

/* ---------- 设备卡 ---------- */
.device-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;height:100%;display:flex;flex-direction:column;transition:transform var(--t),box-shadow var(--t)}
.device-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.device-card .dc-media{overflow:hidden;border-radius:var(--r-img) var(--r-img) 0 0}
.device-card .dc-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform var(--t)}
.device-card:hover .dc-media img{transform:scale(1.04)}
.device-card .dc-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.device-card h3{font-size:19px;margin-bottom:10px}
.device-card p{color:var(--muted);font-size:15px}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;padding:6px 14px;border-radius:var(--r-pill);background:var(--teal-l);color:var(--teal-d);line-height:1.2}
.badge--lemon{background:#f3fbc9;color:var(--ink)}
.dc-meta{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.dc-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--teal-d);font-weight:700;font-size:15px}
.dc-arrow span{transition:transform var(--t)}
.device-card:hover .dc-arrow span{transform:translateX(4px)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-list{list-style:none;margin:0;background:transparent;border:none}
.faq-list .accordion-item{border:1px solid var(--line);border-radius:14px;background:#fff;margin-bottom:14px;position:relative;overflow:hidden;transition:box-shadow var(--t)}
.faq-list .accordion-item:hover{box-shadow:var(--sh-1)}
.faq-list .accordion-item.is-active{border-color:#cfe9e0}
.faq-list .accordion-item.is-active::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--teal)}
.faq-list .accordion-title{display:block;padding:20px 60px 20px 26px;font-size:17px;font-weight:700;color:var(--text);background:#fff;border:none;position:relative;transition:color var(--t)}
.faq-list .accordion-item.is-active .accordion-title{color:var(--teal-d)}
.faq-list .accordion-title:hover{color:var(--teal-d)}
.faq-list .accordion-title::before,
.faq-list .accordion-title::after{content:"";position:absolute;right:24px;top:50%;background:var(--teal);border-radius:2px;transition:transform var(--t),opacity var(--t)}
.faq-list .accordion-title::before{width:14px;height:2px;margin-top:-1px}
.faq-list .accordion-title::after{width:2px;height:14px;margin-top:-7px;right:30px}
.faq-list .accordion-item.is-active .accordion-title::after{transform:scaleY(0);opacity:0}
.faq-list .accordion-content{padding:0 26px 22px;color:var(--muted);font-size:16px;border:none;background:#fff}
.faq-list .accordion-item.is-fallback-open>.accordion-content{display:block!important}

/* ---------- CTA 横幅 ---------- */
.cta-banner{position:relative;background:var(--ink) url('/assets/images/backpic/back-3.png') center/cover no-repeat;color:var(--on-dark);overflow:hidden}
.cta-banner::after{content:"";position:absolute;inset:0;background:linear-gradient(96deg,rgba(14,20,22,.94),rgba(14,20,22,.82))}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:40px;align-items:center;padding:72px 0}
.cta-inner h2{color:#fff;font-size:32px;margin-bottom:14px}
.cta-inner p{color:var(--on-dark-muted);margin-bottom:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-lines{position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,var(--lemon),transparent);opacity:.6;z-index:3}

/* ---------- 相关链接 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{display:flex;flex-direction:column;justify-content:space-between;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#cfe9e0}
.related-card h3{font-size:19px}
.related-card p{font-size:15px;color:var(--muted);margin:0}
.related-card .rc-foot{display:flex;align-items:center;justify-content:space-between;font-size:14px;color:var(--faint)}
.related-card .rc-foot .dc-arrow{font-size:15px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--on-dark-muted);position:relative;padding:72px 0 32px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--lemon);opacity:.85}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px}
.f-brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:var(--on-dark);margin-bottom:16px}
.f-desc{font-size:15px;line-height:1.8;color:var(--on-dark-muted);max-width:340px}
.site-footer h4{font-size:15px;color:var(--on-dark);margin-bottom:16px;letter-spacing:.02em}
.site-footer ul li{margin-bottom:12px}
.site-footer a{color:var(--on-dark-muted);font-size:15px}
.site-footer a:hover{color:#fff;text-decoration:underline}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:15px}
.footer-contact .dot{width:6px;height:6px;border-radius:50%;background:var(--teal);margin-top:11px;flex:0 0 auto}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;border-top:1px solid rgba(255,255,255,.08);padding-top:24px;font-size:14px}

/* ---------- 浮动 CTA ---------- */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:70;display:flex;gap:10px;background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);padding:8px;box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity var(--t),transform var(--t),visibility var(--t)}
.float-cta.is-on{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta .btn{min-height:44px;border-radius:var(--r-pill);padding:0 20px}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  h1{font-size:38px}
  .cat-hero h1{font-size:38px}
  .header-inner{gap:16px}
  .nav-link{padding:0 12px;font-size:15px}
  .mega{width:720px}
}
@media (max-width:991px){
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  h1{font-size:32px}
  h2{font-size:26px}
  .main-nav,.header-actions .icon-btn,.header-actions .btn{display:none}
  .nav-toggle{display:flex}
  .cat-hero .hero-inner{grid-template-columns:1fr;gap:28px;min-height:0;padding-top:40px;padding-bottom:44px}
  .cat-hero h1{font-size:32px}
  .hero-panel{max-width:420px}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .metric{border-left:none;border-top:1px solid rgba(255,255,255,.08)}
  .metric:nth-child(-n+2){border-top:none}
  .metric:nth-child(even){border-left:1px solid rgba(255,255,255,.08)}
  .zig{grid-template-columns:1fr;gap:26px;padding:44px 0}
  .zig.reverse .zig-media,.zig.reverse .zig-body{order:0}
  .spec-grid{grid-template-columns:1fr;min-width:0}
  .spec-wrap{overflow-x:visible}
  .related-grid{grid-template-columns:1fr;gap:18px}
  .cta-inner{grid-template-columns:1fr;gap:26px;padding:56px 0}
  .cta-actions{justify-content:flex-start}
  .cta-inner h2{font-size:26px}
  .footer-top{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  body{font-size:16px}
  .section{padding:56px 0}
  .container{padding:0 16px}
  h1{font-size:28px}
  h2{font-size:24px}
  h3{font-size:18px}
  .cat-hero h1{font-size:28px}
  .hero-sub{font-size:16px}
  .hero-actions .btn{width:100%}
  .hero-trust{flex-direction:column;gap:8px}
  .metric{padding:24px 20px}
  .metric b{font-size:26px}
  .spec-col{padding:20px}
  .faq-list .accordion-title{font-size:16px;padding:18px 56px 18px 20px}
  .faq-list .accordion-content{padding:0 20px 20px}
  .float-cta{left:0;right:0;bottom:0;border-radius:0;padding:8px 12px;justify-content:space-between;gap:8px}
  .float-cta .btn{flex:1;min-height:48px;border-radius:var(--r-btn)}
  .float-cta .btn-ghost{flex:0 0 56px;padding:0}
  .site-footer{padding:56px 0 84px}
  .footer-top{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:479px){
  .metric-grid{grid-template-columns:1fr}
  .metric{border-left:none!important}
  .metric:nth-child(2){border-top:1px solid rgba(255,255,255,.08)}
  .related-card{padding:20px}
}

/* roulang page: category2 */
:root{
  --cyan:#0FB27E;
  --cyan-d:#0A7D5A;
  --cyan-l:#E4F7F0;
  --lemon:#D6F451;
  --orange:#FF6B35;
  --ink:#0E1416;
  --ink-2:#131A1D;
  --bg:#F5F6F2;
  --white:#FFFFFF;
  --t1:#14191C;
  --t2:#5A666B;
  --t3:#8B9599;
  --line:#E3E7E1;
  --d-text:#F2F5F1;
  --d-sub:#A9B6B2;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --sh:0 1px 2px rgba(14,20,22,.04),0 10px 28px rgba(14,20,22,.06);
  --sh-h:0 6px 12px rgba(14,20,22,.06),0 18px 40px rgba(14,20,22,.10);
  --t:.22s ease;
  --pad-y:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--t1);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--cyan-d);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--cyan);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-0.01em;font-weight:800;color:var(--t1);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
:focus-visible{outline:2px solid var(--lemon);outline-offset:2px;}

/* ============ 布局容器 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--pad-y) 0;}
.section--tight{padding:72px 0;}
.section--dark{background:var(--ink);color:var(--d-text);}
.section--dark h2,.section--dark h3,.section--dark h4{color:var(--d-text);}
.section--white{background:var(--white);}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head h2{font-size:32px;}
.sec-head p{margin-top:12px;color:var(--t2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.04em;
  color:var(--cyan-d);background:var(--cyan-l);
  border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:16px;height:2px;background:var(--lemon);border-radius:2px;}
.section--dark .eyebrow{background:rgba(15,178,126,.16);color:#7FE3C1;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:height var(--t),box-shadow var(--t);
}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:var(--t1);white-space:nowrap;}
.brand:hover{color:var(--t1);}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--lemon);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 34px;
}
.logo-mark svg{width:19px;height:19px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:12px;flex:1;}
.nav-item{position:relative;}
.nav-link{
  display:inline-flex;align-items:center;height:72px;
  padding:0 14px;font-size:15px;font-weight:600;color:var(--t1);
  position:relative;transition:color var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:18px;height:2px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.nav-link:hover{color:var(--cyan-d);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--cyan-d);}
.nav-link.is-active::before{
  content:"";position:absolute;left:14px;right:14px;top:0;height:4px;
  background:var(--cyan);border-radius:0 0 4px 4px;
}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:var(--white);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:border-color var(--t),background var(--t);
}
.icon-btn:hover{border-color:var(--cyan);background:var(--cyan-l);}
.icon-btn svg{width:18px;height:18px;stroke:var(--t1);fill:none;stroke-width:2;stroke-linecap:round;}
.nav-toggle{display:none;}

/* Mega 面板 */
.mega{
  position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);
  width:800px;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-h);padding:26px;
  opacity:0;visibility:hidden;transition:opacity var(--t),transform var(--t),visibility var(--t);
}
.nav-item:hover .mega,.nav-item:focus-within .mega{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);}
.mega-cols{display:grid;grid-template-columns:1fr 1.25fr .9fr;gap:26px;}
.mega h4{font-size:13px;color:var(--t3);font-weight:700;letter-spacing:.06em;margin-bottom:14px;}
.mega-list li a{
  display:flex;align-items:center;gap:10px;padding:8px 0;font-size:15px;font-weight:600;color:var(--t1);
  transition:color var(--t),transform var(--t);
}
.mega-list li a:hover{color:var(--cyan);transform:translateX(2px);}
.mega-list .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);flex:0 0 7px;}
.mega-post{display:block;padding:9px 0;border-bottom:1px dashed var(--line);}
.mega-post:last-child{border-bottom:0;}
.mega-post strong{display:block;font-size:15px;font-weight:700;color:var(--t1);transition:color var(--t);}
.mega-post span{font-size:13px;color:var(--t3);}
.mega-post:hover strong{color:var(--cyan);}
.mega-card{display:block;border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;background:var(--bg);}
.mega-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid var(--line);}
.mega-card p{font-size:14px;font-weight:700;color:var(--t1);padding:12px 14px;display:flex;justify-content:space-between;align-items:center;}
.mega-card:hover p{color:var(--cyan);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:16px;font-weight:700;cursor:pointer;border:1.5px solid transparent;
  transition:background var(--t),color var(--t),transform var(--t),box-shadow var(--t),border-color var(--t);
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:var(--sh);}
.btn-primary:hover{background:#EA5A25;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-h);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:transparent;color:var(--cyan-d);border-color:var(--cyan);}
.btn-secondary:hover{background:var(--cyan-l);color:var(--cyan-d);}
.btn-ghost{background:rgba(255,255,255,.08);color:var(--d-text);border-color:rgba(255,255,255,.24);}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:8px;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--cyan-d);font-size:15px;}
.link-more span{transition:transform var(--t);}
.link-more:hover span{transform:translateX(4px);}
.link-more:hover{color:var(--cyan);border-bottom:2px solid var(--lemon);}

/* ============ Hero ============ */
.page-hero{
  position:relative;min-height:360px;display:flex;align-items:center;
  background:
    linear-gradient(rgba(14,20,22,.78),rgba(14,20,22,.78)),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  color:var(--d-text);text-align:center;
  padding:64px 0 72px;
}
.page-hero .container{position:relative;z-index:2;max-width:880px;}
.crumb{display:flex;justify-content:center;gap:8px;font-size:13px;color:var(--d-sub);margin-bottom:20px;flex-wrap:wrap;}
.crumb a{color:var(--d-sub);}
.crumb a:hover{color:#fff;}
.crumb .sep{color:var(--lemon);}
.crumb .now{color:#fff;font-weight:700;}
.page-hero h1{font-size:44px;color:#fff;letter-spacing:-0.01em;}
.page-hero .hero-sub{margin-top:18px;font-size:17px;color:var(--d-sub);max-width:680px;margin-left:auto;margin-right:auto;}
.hero-actions{margin-top:30px;display:flex;justify-content:center;gap:14px;flex-wrap:wrap;}
.hero-ticks{margin-top:26px;display:flex;justify-content:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--d-sub);}
.hero-ticks span{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:999px;padding:6px 14px;}

/* 指标条 */
.metric-bar{background:var(--ink-2);border-top:1px solid rgba(255,255,255,.08);}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:34px 0;}
.metric-grid .cell{border-left:2px solid rgba(214,244,81,.5);padding-left:16px;}
.metric-grid strong{display:block;font-size:28px;font-weight:800;color:var(--lemon);line-height:1.2;}
.metric-grid span{font-size:14px;color:var(--d-sub);}

/* ============ 分栏主体 ============ */
.split{display:grid;grid-template-columns:4fr 8fr;gap:32px;align-items:start;}
.side-sticky{position:sticky;top:96px;display:grid;gap:20px;}
.panel{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh);
}
.panel h3{font-size:17px;margin-bottom:16px;}
.toc-list li a{
  display:flex;align-items:center;justify-content:space-between;
  padding:11px 0;font-size:15px;color:var(--t2);border-bottom:1px dashed var(--line);
  transition:color var(--t),padding-left var(--t);
}
.toc-list li:last-child a{border-bottom:0;}
.toc-list li a::after{content:"→";color:var(--cyan);opacity:0;transition:opacity var(--t);}
.toc-list li a:hover{color:var(--cyan-d);padding-left:4px;}
.toc-list li a:hover::after{opacity:1;}
.filter-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;font-size:13px;font-weight:700;
  padding:6px 14px;border-radius:999px;background:var(--cyan-l);color:var(--cyan-d);
}
.tag--lemon{background:var(--lemon);color:var(--ink);}
.tag--line{background:transparent;color:var(--t2);border:1px solid var(--line);}
.tag--orange{background:rgba(255,107,53,.12);color:#C4431A;}
.panel--dark{
  background:var(--ink);border-color:rgba(255,255,255,.08);box-shadow:none;color:var(--d-text);
}
.panel--dark h3{color:#fff;}
.panel--dark p{color:var(--d-sub);font-size:15px;}
.panel--dark .btn{margin-top:18px;width:100%;}

/* 卡片网格 */
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh);display:flex;flex-direction:column;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:#D6DCD4;}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--t);}
.card:hover .card-media img{transform:scale(1.04);}
.card-media .badge{
  position:absolute;left:14px;top:14px;background:var(--lemon);color:var(--ink);
  font-size:13px;font-weight:800;border-radius:999px;padding:6px 14px;
}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:21px;}
.card-body p{color:var(--t2);font-size:15px;line-height:1.75;}
.spec-list{display:grid;gap:9px;margin-top:4px;}
.spec-list li{display:flex;gap:10px;font-size:15px;color:var(--t2);}
.spec-list li::before{
  content:"";flex:0 0 8px;width:8px;height:8px;margin-top:9px;border-radius:2px;
  background:var(--cyan);transform:rotate(45deg);
}
.card-foot{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;font-size:14px;color:var(--t3);
}
.card-foot .link-more{font-size:14px;}

/* 深色数据说明带 */
.data-band{
  grid-column:1 / -1;
  background:var(--ink);border-radius:var(--r-card);padding:30px;
  color:var(--d-text);border:1px solid rgba(255,255,255,.08);
}
.data-band h3{font-size:21px;color:#fff;}
.data-band > p{color:var(--d-sub);font-size:15px;margin-top:10px;max-width:760px;}
.band-rows{margin-top:24px;display:grid;gap:14px;}
.band-row{
  display:grid;grid-template-columns:120px 1fr 190px;align-items:center;gap:18px;
  padding:14px 0;border-top:1px solid rgba(255,255,255,.08);
}
.band-row strong{font-size:22px;color:var(--lemon);font-weight:800;}
.band-row .track{height:6px;border-radius:999px;background:rgba(255,255,255,.10);position:relative;overflow:hidden;}
.band-row .track i{position:absolute;left:0;top:0;bottom:0;background:linear-gradient(90deg,var(--cyan),var(--lemon));border-radius:999px;}
.band-row span{font-size:14px;color:var(--d-sub);text-align:right;}

/* 适用场景 */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.scene{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh);transition:transform var(--t),box-shadow var(--t);
}
.scene:hover{transform:translateY(-4px);box-shadow:var(--sh-h);}
.scene .ico{
  width:44px;height:44px;border-radius:12px;background:var(--cyan-l);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.scene .ico svg{width:22px;height:22px;stroke:var(--cyan-d);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.scene h3{font-size:18px;margin-bottom:8px;}
.scene p{font-size:15px;color:var(--t2);}

/* FAQ */
.faq-wrap{max-width:860px;margin:0 auto;}
.accordion.faq-acc{border:0;background:transparent;}
.faq-acc .accordion-item{
  background:var(--white);border:1px solid var(--line);border-radius:14px;
  margin-bottom:14px;overflow:hidden;transition:border-color var(--t),box-shadow var(--t);
}
.faq-acc .accordion-item.is-active{border-color:var(--cyan);box-shadow:var(--sh);}
.faq-acc .accordion-title{
  display:block;padding:20px 58px 20px 24px;font-size:17px;font-weight:700;color:var(--t1);
  border:0;position:relative;line-height:1.6;
}
.faq-acc .accordion-title::before,.faq-acc .accordion-title::after{
  content:"";position:absolute;right:24px;top:50%;background:var(--cyan-d);border-radius:2px;transition:transform var(--t),background var(--t);
}
.faq-acc .accordion-title::before{width:14px;height:2.5px;transform:translateY(-50%);}
.faq-acc .accordion-title::after{width:2.5px;height:14px;right:29.6px;transform:translateY(-50%);}
.faq-acc .accordion-item.is-active .accordion-title{color:var(--cyan-d);}
.faq-acc .accordion-item.is-active .accordion-title::after{transform:translateY(-50%) rotate(90deg);opacity:0;}
.faq-acc .accordion-title:hover{color:var(--cyan-d);}
.faq-acc .accordion-content{padding:0 24px 22px;color:var(--t2);font-size:15.5px;border:0;background:transparent;}
.faq-acc .accordion-content p{margin:0;}
.faq-acc .accordion-item.is-active{border-left:4px solid var(--cyan);}

/* CTA 横幅 */
.cta-band{
  position:relative;background:
    linear-gradient(rgba(14,20,22,.84),rgba(14,20,22,.84)),
    url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  color:var(--d-text);border-radius:var(--r-card);overflow:hidden;padding:56px;
  border:1px solid rgba(255,255,255,.08);
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:repeating-linear-gradient(90deg,var(--lemon) 0 26px,transparent 26px 52px);
}
.cta-band h2{font-size:32px;color:#fff;max-width:720px;}
.cta-band p{margin-top:14px;color:var(--d-sub);max-width:660px;}
.cta-band .hero-actions{justify-content:flex-start;}

/* 相关链接 */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.rel-card{
  display:block;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh);transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:var(--cyan);}
.rel-card h3{font-size:18px;color:var(--t1);}
.rel-card p{font-size:14px;color:var(--t2);margin-top:8px;}
.rel-card .link-more{margin-top:14px;font-size:14px;}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;display:flex;align-items:center;gap:10px;
  background:var(--white);border:1px solid var(--line);border-radius:999px;
  padding:8px 10px 8px 16px;box-shadow:var(--sh-h);
  opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity var(--t),transform var(--t),visibility var(--t);
}
.float-cta.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta .fc-label{font-size:14px;font-weight:700;color:var(--t2);}
.float-cta .btn-sm{min-height:38px;border-radius:999px;}
.float-bar{display:none;}

/* 页脚 */
.site-footer{background:var(--ink);color:var(--d-sub);position:relative;margin-top:0;}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--lemon);}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding:72px 0 40px;}
.f-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff;margin-bottom:16px;}
.f-brand .logo-mark{background:var(--lemon);}
.f-desc{font-size:15px;line-height:1.85;color:var(--d-sub);}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:700;}
.site-footer ul li{margin-bottom:11px;}
.site-footer ul li a{color:var(--d-sub);font-size:15px;}
.site-footer ul li a:hover{color:#fff;text-decoration:underline;}
.footer-contact li{display:flex;gap:10px;font-size:15px;}
.footer-contact .dot{flex:0 0 6px;width:6px;height:6px;margin-top:11px;border-radius:2px;background:var(--lemon);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:22px 0 26px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--t3);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{padding:0 20px;}
  .mega{width:680px;}
  .mega-cols{grid-template-columns:1fr 1.1fr;}
  .mega-cols > div:last-child{display:none;}
}
@media (max-width:991px){
  :root{--pad-y:72px;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;left:0;right:0;top:0;bottom:0;background:var(--ink);
    flex-direction:column;align-items:stretch;padding:88px 24px 40px;gap:0;
    transform:translateX(-100%);transition:transform var(--t);overflow-y:auto;z-index:65;
  }
  .main-nav.is-open{transform:translateX(0);}
  .nav-link{height:auto;padding:18px 0;color:#fff;font-size:17px;border-bottom:1px solid rgba(255,255,255,.08);}
  .nav-link:hover{color:var(--lemon);}
  .nav-link.is-active{color:var(--lemon);}
  .nav-link.is-active::before{display:none;}
  .nav-link::after{display:none;}
  .mega{
    position:static;transform:none;opacity:1;visibility:visible;width:100%;
    background:transparent;border:0;box-shadow:none;padding:8px 0 18px;display:none;
  }
  .nav-item:hover .mega{display:none;}
  .mega.is-open{display:block;}
  .mega-cols{grid-template-columns:1fr;}
  .mega-cols > div:last-child{display:none;}
  .mega h4{color:var(--d-sub);}
  .mega-list li a,.mega-post strong{color:#fff;}
  .mega-post span{color:var(--t3);}
  .page-hero h1{font-size:34px;}
  .metric-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
  .split{grid-template-columns:1fr;}
  .side-sticky{position:static;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;padding-top:56px;}
  .cta-band{padding:40px 32px;}
}
@media (max-width:767px){
  :root{--pad-y:56px;}
  body{font-size:16px;}
  .sec-head h2,.cta-band h2{font-size:24px;}
  .page-hero{min-height:auto;padding:48px 0 56px;}
  .page-hero h1{font-size:28px;}
  .hero-actions .btn{width:100%;}
  .card-grid{grid-template-columns:1fr;}
  .scene-grid{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:1fr;}
  .band-row{grid-template-columns:1fr;gap:8px;text-align:left;}
  .band-row span{text-align:left;}
  .footer-top{grid-template-columns:1fr;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;padding-bottom:90px;}
  .float-cta{display:none;}
  .float-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;height:56px;z-index:80;
    background:var(--ink);border-top:1px solid rgba(255,255,255,.10);
    align-items:center;gap:10px;padding:0 12px;
  }
  .float-bar .btn{flex:1;min-height:42px;font-size:15px;}
  .float-bar .icon-btn{width:42px;height:42px;background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);}
  .float-bar .icon-btn svg{stroke:#fff;}
  .site-footer{padding-bottom:64px;}
}
@media (max-width:479px){
  .container{padding:0 16px;}
  .brand{font-size:16px;}
  .metric-grid{grid-template-columns:1fr;gap:16px;}
  .card-body h3{font-size:18px;}
}

/* roulang page: category3 */
:root{
  --primary:#0FB27E;
  --primary-dark:#0A7D5A;
  --primary-light:#E4F7F0;
  --lemon:#D6F451;
  --orange:#FF6B35;
  --orange-dark:#E2551F;
  --ink:#0E1416;
  --ink-2:#131A1D;
  --bg:#F5F6F2;
  --white:#FFFFFF;
  --text:#14191C;
  --text-2:#5A666B;
  --text-3:#8B9599;
  --line:#E3E7E1;
  --on-dark:#F2F5F1;
  --on-dark-2:#A9B6B2;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,20,22,.04), 0 10px 28px rgba(14,20,22,.06);
  --sh-2:0 6px 12px rgba(14,20,22,.06), 0 18px 40px rgba(14,20,22,.10);
  --ease:.22s ease;
  --gap-sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:17px;line-height:1.8;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.28;letter-spacing:-.01em;font-weight:800}
p{margin:0}
strong{font-weight:700}
:focus-visible{outline:2px solid var(--lemon);outline-offset:2px}
.num{font-variant-numeric:tabular-nums;letter-spacing:0}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:16px;font-weight:700;border:1.5px solid transparent;
  cursor:pointer;transition:var(--ease);white-space:nowrap;background:none;
}
.btn-sm{height:42px;padding:0 20px;font-size:15px}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 6px 16px rgba(255,107,53,.24)}
.btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,107,53,.32)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(255,107,53,.22)}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary-dark);border-width:1.5px}
.btn-ghost:hover{background:var(--primary-light);transform:translateY(-2px)}
.btn-ghost-dark{background:transparent;border-color:rgba(242,245,241,.45);color:var(--on-dark)}
.btn-ghost-dark:hover{border-color:var(--lemon);color:var(--lemon)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;padding:0;height:auto;border:0;background:none;
  color:var(--primary-dark);font-weight:700;font-size:16px;cursor:pointer;
}
.btn-text span[aria-hidden]{transition:var(--ease)}
.btn-text:hover span[aria-hidden]{transform:translateX(4px)}
.btn-text:hover{box-shadow:inset 0 -2px 0 var(--lemon)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line);transition:height var(--ease),box-shadow var(--ease);
}
.site-header.is-shrink{box-shadow:0 6px 20px rgba(14,20,22,.06)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height var(--ease)}
.site-header.is-shrink .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:36px;height:36px;border-radius:11px;background:var(--lemon);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
  box-shadow:inset 0 0 0 1px rgba(14,20,22,.08);
}
.logo-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.01em}
.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:.14em}

.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-item{position:relative}
.nav-link{
  display:inline-flex;align-items:center;height:72px;padding:0 14px;
  font-size:15.5px;font-weight:600;color:var(--text-2);position:relative;transition:var(--ease);
}
.site-header.is-shrink .nav-link{height:60px}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:20px;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary-dark);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1);background:var(--primary)}
.nav-item>.nav-link.is-active::before{
  content:"";position:absolute;left:14px;right:14px;top:0;height:4px;background:var(--primary);border-radius:0 0 4px 4px;
}

/* Mega 面板 */
.mega{
  position:absolute;top:calc(100% - 6px);left:50%;transform:translate(-50%,10px);
  width:820px;background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--sh-2);padding:26px;opacity:0;visibility:hidden;transition:var(--ease);
  z-index:70;
}
.nav-item:hover .mega,.nav-item:focus-within .mega{opacity:1;visibility:visible;transform:translate(-50%,0)}
.mega-cols{display:grid;grid-template-columns:1fr 1.25fr 1fr;gap:24px}
.mega h4{font-size:13px;color:var(--text-3);letter-spacing:.08em;font-weight:700;margin-bottom:12px}
.mega-list li a{
  display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--text-2);transition:var(--ease);
}
.mega-list li a:hover{color:var(--primary-dark);background:var(--primary-light);transform:translateX(2px)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--primary);flex-shrink:0;display:inline-block}
.mega-post{display:block;padding:10px;border-radius:10px;transition:var(--ease);border:1px solid transparent}
.mega-post:hover{background:var(--bg);border-color:var(--line);transform:translateX(2px)}
.mega-post strong{display:block;font-size:14.5px;font-weight:700}
.mega-post span{font-size:12.5px;color:var(--text-3)}
.mega-card{display:block;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:var(--ease)}
.mega-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.mega-card p{padding:12px 14px;font-size:14.5px;font-weight:700;color:var(--primary-dark);display:flex;align-items:center;gap:6px}
.mega-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}

.header-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.icon-btn{
  width:42px;height:42px;border-radius:11px;border:1px solid var(--line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:var(--ease);
}
.icon-btn svg{width:19px;height:19px;stroke:var(--text-2);fill:none;stroke-width:2;stroke-linecap:round}
.icon-btn:hover{border-color:var(--primary);background:var(--primary-light)}
.icon-btn:hover svg{stroke:var(--primary-dark)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:11px;background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.nav-toggle span{width:18px;height:2px;background:var(--text);border-radius:2px;transition:var(--ease)}

.search-panel{
  display:none;border-top:1px solid var(--line);background:#fff;padding:16px 0;
}
.search-panel.is-open{display:block}
.search-form{display:flex;gap:10px}
.search-form input{
  flex:1;height:48px;border:1px solid var(--line);border-radius:10px;padding:0 16px;font-size:15px;
  transition:var(--ease);background:var(--bg);
}
.search-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px var(--lemon);background:#fff}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:120;background:var(--ink);color:var(--on-dark);
  transform:translateX(100%);transition:transform .28s ease;overflow-y:auto;padding:24px 22px 40px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-brand{font-size:19px;font-weight:800;color:#fff}
.drawer-close{
  width:42px;height:42px;border-radius:11px;border:1px solid rgba(255,255,255,.18);
  background:transparent;color:#fff;font-size:22px;line-height:1;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:26px}
.drawer-nav a{
  padding:15px 14px;border-radius:12px;font-size:17px;font-weight:600;color:var(--on-dark-2);
  border-bottom:1px solid rgba(255,255,255,.07);transition:var(--ease);
}
.drawer-nav a:hover{background:rgba(255,255,255,.06);color:#fff}
.drawer-nav a.is-active{color:var(--lemon);background:rgba(214,244,81,.08)}
.drawer-cta{width:100%}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:var(--on-dark);
  background:
    linear-gradient(100deg,rgba(14,20,22,.94) 0%,rgba(14,20,22,.84) 52%,rgba(14,20,22,.72) 100%),
    url(/assets/images/backpic/back-2.webp) center/cover no-repeat;
  padding:56px 0 72px;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--lemon),transparent);opacity:.5;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--on-dark-2);margin-bottom:26px}
.breadcrumb a{color:var(--on-dark-2);transition:var(--ease)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:var(--lemon)}
.breadcrumb .current{color:var(--primary);font-weight:700}

.hero-grid{margin-left:-12px;margin-right:-12px}
.hero-grid>.cell{padding-left:12px;padding-right:12px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(15,178,126,.16);color:#7FE3C0;font-size:13px;font-weight:700;
  border:1px solid rgba(15,178,126,.34);margin-bottom:18px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--lemon);display:block}
.hero h1{font-size:44px;color:#fff;margin-bottom:16px}
.hero h1 em{font-style:normal;color:var(--lemon)}
.hero-sub{font-size:19px;font-weight:600;color:#DFE7E3;margin-bottom:16px}
.hero-text{font-size:16px;line-height:1.9;color:var(--on-dark-2);max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:22px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 18px;font-size:13.5px;color:var(--on-dark-2)}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta span::before{content:"";width:14px;height:1px;background:var(--lemon);display:block}

.hero-visual{position:relative}
.hero-media{
  border-radius:var(--r-card);overflow:hidden;border:1px solid rgba(255,255,255,.1);
  box-shadow:0 24px 60px rgba(0,0,0,.45);
}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-float{
  position:absolute;left:-18px;bottom:-26px;background:#fff;color:var(--text);
  border-radius:14px;box-shadow:var(--sh-2);padding:16px 20px;display:flex;gap:22px;align-items:center;
}
.hero-float .metric{display:flex;flex-direction:column;gap:2px}
.hero-float .metric b{font-size:24px;color:var(--primary-dark);font-weight:800;font-variant-numeric:tabular-nums;line-height:1.1}
.hero-float .metric span{font-size:12.5px;color:var(--text-3)}

/* ---------- 通用板块 ---------- */
.section{padding:var(--gap-sec) 0}
.section-tight{padding:72px 0}
.bg-white{background:#fff}
.bg-dark{background:var(--ink);color:var(--on-dark)}
.bg-dark h2,.bg-dark h3{color:#fff}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  color:var(--primary-dark);letter-spacing:.06em;margin-bottom:14px;
}
.bg-dark .eyebrow{color:var(--lemon)}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lemon);display:block}
h2.sec-title{font-size:32px;margin-bottom:14px}
.sec-desc{font-size:16.5px;color:var(--text-2);line-height:1.85}
.bg-dark .sec-desc{color:var(--on-dark-2)}

/* 服务卡片 */
.svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.svc-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px 24px;
  box-shadow:var(--sh-1);transition:var(--ease);display:flex;flex-direction:column;
}
.svc-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#CFE9DF}
.svc-icon{
  width:46px;height:46px;border-radius:12px;background:var(--primary-light);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.svc-icon svg{width:22px;height:22px;stroke:var(--primary-dark);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.svc-card h3{font-size:19px;margin-bottom:10px}
.svc-card p{font-size:15px;color:var(--text-2);line-height:1.8}
.svc-card .tagline{margin-top:16px;font-size:13px;color:var(--primary-dark);font-weight:700;display:inline-flex;align-items:center;gap:6px}

/* 标签组 */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.chip{
  display:inline-flex;align-items:center;gap:7px;padding:7px 15px;border-radius:var(--r-pill);
  background:var(--primary-light);color:var(--primary-dark);font-size:13.5px;font-weight:700;border:1px solid #CDEDE1;
}
.chip.lemon{background:#F4FBCF;color:#4B5910;border-color:#E5F3A8}

/* 流程时间线 */
.flow{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding-top:14px}
.flow::before{
  content:"";position:absolute;top:36px;left:9%;right:9%;border-top:2px dashed var(--lemon);z-index:0;
}
.flow-step{position:relative;z-index:1;text-align:center;padding:0 4px}
.flow-dot{
  width:46px;height:46px;border-radius:50%;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;margin:0 auto 20px;
  font-size:18px;font-weight:800;font-variant-numeric:tabular-nums;
  box-shadow:0 0 0 8px var(--bg);
}
.flow-step h3{font-size:19px;margin-bottom:10px}
.flow-step p{font-size:15px;color:var(--text-2);line-height:1.8;max-width:270px;margin:0 auto}

/* 案例横卡 */
.case-list{display:flex;flex-direction:column;gap:22px}
.case-card{
  display:grid;grid-template-columns:320px 1fr;gap:28px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;
  box-shadow:var(--sh-1);transition:var(--ease);
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#CFE9DF}
.case-media{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line)}
.case-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform var(--ease)}
.case-card:hover .case-media img{transform:scale(1.04)}
.case-body .badge{
  display:inline-flex;align-items:center;padding:5px 13px;border-radius:var(--r-pill);
  background:#F4FBCF;color:#4B5910;font-size:12.5px;font-weight:700;margin-bottom:12px;
}
.case-body h3{font-size:21px;margin-bottom:10px}
.case-body p{font-size:15.5px;color:var(--text-2);line-height:1.85;margin-bottom:16px}
.case-facts{display:flex;flex-wrap:wrap;gap:10px 26px;padding-top:14px;border-top:1px dashed var(--line)}
.case-facts div{display:flex;flex-direction:column}
.case-facts b{font-size:19px;color:var(--primary-dark);font-weight:800;font-variant-numeric:tabular-nums;line-height:1.2}
.case-facts span{font-size:12.5px;color:var(--text-3)}

/* 数据带 */
.metric-band{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid rgba(255,255,255,.1);border-bottom:1px solid rgba(255,255,255,.1)}
.metric-item{padding:34px 26px;border-right:1px solid rgba(255,255,255,.1);transition:var(--ease)}
.metric-item:last-child{border-right:0}
.metric-item:hover{background:rgba(255,255,255,.03)}
.metric-item b{display:block;font-size:40px;font-weight:800;color:var(--lemon);font-variant-numeric:tabular-nums;line-height:1.05;margin-bottom:10px}
.metric-item strong{display:block;font-size:16px;color:#fff;margin-bottom:6px}
.metric-item p{font-size:14px;color:var(--on-dark-2);line-height:1.75}

/* FAQ */
.faq-wrap{max-width:880px;margin:0 auto}
.accordion{background:transparent;border:0;margin:0;list-style:none}
.accordion .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:14px;
  overflow:hidden;transition:var(--ease);position:relative;
}
.accordion .accordion-item:hover{border-color:#CFE9DF}
.accordion .accordion-item.is-active{border-color:var(--primary);box-shadow:inset 4px 0 0 var(--primary),var(--sh-1)}
.accordion .accordion-title{
  display:block;background:transparent;border:0;padding:22px 62px 22px 24px;
  font-size:17px;font-weight:700;color:var(--text);position:relative;transition:var(--ease);
}
.accordion .accordion-title:hover{color:var(--primary-dark);background:var(--primary-light)}
.accordion .accordion-item.is-active .accordion-title{color:var(--primary-dark)}
.accordion .accordion-title::before{
  content:"";position:absolute;right:26px;top:50%;width:14px;height:2px;background:var(--primary-dark);
  transform:translateY(-50%);
}
.accordion .accordion-title::after{
  content:"";position:absolute;right:32px;top:50%;width:2px;height:14px;background:var(--primary-dark);
  transform:translateY(-50%);transition:var(--ease);
}
.accordion .accordion-item.is-active .accordion-title::after{transform:translateY(-50%) scaleY(0)}
.accordion .accordion-content{
  border:0;border-top:1px dashed var(--line);padding:20px 26px 24px;background:#fff;
  font-size:15.5px;color:var(--text-2);line-height:1.85;
}

/* CTA 横幅 */
.cta-banner{
  position:relative;background:
    linear-gradient(120deg,rgba(14,20,22,.96),rgba(14,20,22,.86)),
    url(/assets/images/backpic/back-3.png) center/cover no-repeat;
  color:var(--on-dark);padding:72px 0;overflow:hidden;
}
.cta-banner::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--lemon) 40%,var(--lemon) 60%,transparent);
}
.cta-inner{display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center;padding:0 24px;max-width:1200px;margin:0 auto}
.cta-banner h2{font-size:30px;color:#fff;margin-bottom:14px}
.cta-banner p{font-size:16px;color:var(--on-dark-2);max-width:560px}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.cta-actions .btn{width:100%;max-width:290px}
.cta-phone{font-size:15px;color:var(--on-dark-2)}
.cta-phone b{color:var(--lemon);font-size:19px;font-weight:800;font-variant-numeric:tabular-nums}
.cta-deco{position:absolute;right:-40px;bottom:-40px;width:220px;height:220px;border-radius:50%;border:1px dashed rgba(214,244,81,.28);pointer-events:none}

/* 相关链接 */
.link-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.link-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;
  box-shadow:var(--sh-1);transition:var(--ease);display:flex;flex-direction:column;gap:10px;
}
.link-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#CFE9DF}
.link-card .k{font-size:12.5px;font-weight:700;color:var(--text-3);letter-spacing:.08em}
.link-card h3{font-size:19px}
.link-card p{font-size:14.5px;color:var(--text-2);line-height:1.8}
.link-card .go{font-size:14px;font-weight:700;color:var(--primary-dark);display:inline-flex;align-items:center;gap:6px;margin-top:4px}
.link-card .go span[aria-hidden]{transition:var(--ease)}
.link-card:hover .go span[aria-hidden]{transform:translateX(4px)}

/* 页脚 */
.site-footer{
  background:var(--ink);color:var(--on-dark-2);padding:72px 0 150px;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--lemon),transparent);opacity:.55;
}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.09)}
.f-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff;margin-bottom:16px}
.f-brand .logo-mark{width:34px;height:34px;border-radius:10px}
.f-desc{font-size:14.5px;line-height:1.85;color:var(--on-dark-2);max-width:340px}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700}
.site-footer ul{display:flex;flex-direction:column;gap:11px}
.site-footer ul a{font-size:14.5px;color:var(--on-dark-2);transition:var(--ease)}
.site-footer ul a:hover{color:#fff;box-shadow:inset 0 -1px 0 #fff}
.footer-contact li{display:flex;align-items:flex-start;gap:9px;font-size:14.5px}
.footer-contact .dot{margin-top:9px;background:var(--lemon)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding-top:26px;font-size:13px;color:#7C8A87;
}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:100;display:flex;gap:10px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  padding:8px;box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(14px);
  transition:var(--ease);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-link{
  display:inline-flex;align-items:center;height:44px;padding:0 20px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;color:var(--primary-dark);transition:var(--ease);
}
.float-link:hover{background:var(--primary-light)}
.float-link-main{background:var(--orange);color:#fff}
.float-link-main:hover{background:var(--orange-dark);color:#fff}
.float-phone{display:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero h1{font-size:38px}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .metric-band{grid-template-columns:repeat(2,1fr)}
  .metric-item:nth-child(2){border-right:0}
  .metric-item:nth-child(1),.metric-item:nth-child(2){border-bottom:1px solid rgba(255,255,255,.1)}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:991px){
  :root{--gap-sec:72px}
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .header-actions .btn-sm{display:none}
  .hero{padding:44px 0 60px}
  .hero h1{font-size:32px}
  .hero-sub{font-size:17px}
  .hero-visual{margin-top:44px}
  .hero-float{left:12px;bottom:-20px}
  .flow{grid-template-columns:1fr;gap:30px;padding-top:0}
  .flow::before{top:20px;bottom:20px;left:22px;right:auto;border-top:0;border-left:2px dashed var(--lemon)}
  .flow-step{text-align:left;display:grid;grid-template-columns:46px 1fr;gap:18px;align-items:start;padding:0}
  .flow-dot{margin:0}
  .flow-step p{margin:0;max-width:none}
  .case-card{grid-template-columns:1fr;gap:20px}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .cta-actions{flex-direction:row;flex-wrap:wrap;align-items:center}
  .cta-actions .btn{width:auto}
  .link-grid{grid-template-columns:1fr}
  .site-footer{padding:56px 0 132px}
}
@media (max-width:767px){
  :root{--gap-sec:56px}
  body{font-size:16px}
  .brand-sub{display:none}
  h2.sec-title{font-size:24px}
  .hero h1{font-size:28px}
  .svc-grid{grid-template-columns:1fr}
  .metric-band{grid-template-columns:1fr}
  .metric-item{border-right:0;border-bottom:1px solid rgba(255,255,255,.1)}
  .case-facts{gap:12px 20px}
  .accordion .accordion-title{font-size:16px;padding:18px 56px 18px 20px}
  .cta-banner h2{font-size:23px}
  .footer-top{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
  .float-cta{
    right:14px;left:14px;bottom:12px;border-radius:14px;justify-content:space-between;
    padding:8px;transform:translateY(20px);
  }
  .float-link{height:44px;flex:1;justify-content:center}
  .float-link:not(.float-link-main){display:none}
  .float-phone{
    display:inline-flex;align-items:center;justify-content:center;width:56px;height:44px;
    border-radius:11px;border:1px solid var(--line);background:#fff;
  }
  .float-phone svg{width:20px;height:20px;stroke:var(--primary-dark);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
  .hero-float{padding:12px 16px;gap:16px}
  .hero-float .metric b{font-size:20px}
}
@media (max-width:479px){
  .container{padding:0 18px}
  .hero h1{font-size:25px}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .cta-actions{flex-direction:column;align-items:stretch}
  .cta-actions .btn{width:100%;max-width:none}
}