/* MChat · 薄荷信笺清新薄荷绿主题 */
:root{
--bg:#eef7f1;--bg-2:#e1f1e9;--panel:rgba(255,255,255,.7);
--panel-strong:rgba(255,255,255,.9);
--glass:blur(16px) saturate(1.4);--glass-soft:blur(9px) saturate(1.3);
--main:#0fa97c;--main-dark:#12372c;--grad:linear-gradient(135deg,#33d19d,#0fa97c);
--ink:#17372e;--ink-soft:#5d7f73;--muted:#93aca1;
--line:rgba(18,55,44,.12);--green:#22c98f;--gold:#9be3c6;--coral:#33d19d;
--shadow:0 14px 40px rgba(18,55,44,.15);--radius:16px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);background:transparent;line-height:1.7;font-size:16px}

/* 满幅虚化摄影背景(固定整页虚化照片 + 薄荷遮罩) */
.page-bg{position:fixed;inset:0;z-index:-1;overflow:hidden;background:var(--bg)}
.page-bg-img{position:absolute;inset:-52px;background-size:cover;background-position:center;filter:blur(26px) saturate(1.15) brightness(1.06)}
.page-bg-veil{position:absolute;inset:0;background:linear-gradient(160deg,rgba(238,247,241,.82),rgba(225,241,233,.48) 48%,rgba(238,247,241,.84))}
.page-bg-veil::after{content:"";position:absolute;inset:0;background:radial-gradient(120% 90% at 50% 0%,rgba(15,169,124,.16),transparent 58%)}
a{color:var(--main);text-decoration:none}
a:hover{color:var(--main-dark)}
img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.ico{width:20px;height:20px;flex:none}
h1,h2,h3{line-height:1.25;font-weight:800}

/* 顶栏 */
.topbar{background:rgba(18,55,44,.82);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);color:#fff;font-size:13px;padding:7px 0;text-align:center}
.topbar .wrap{opacity:.9}

/* 导航(薄荷白实底 + 薄荷下划线) */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.58);backdrop-filter:var(--glass);-webkit-backdrop-filter:var(--glass);border-bottom:1px solid var(--line);box-shadow:0 4px 18px rgba(18,55,44,.06)}
.nav-in{display:flex;align-items:center;gap:28px;height:68px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink)}
.logo img{width:30px;height:30px;border-radius:8px}
.wordmark{display:flex;flex-direction:column;line-height:1.1}
.wordmark b{font-size:19px;letter-spacing:.5px}
.wordmark i{font-size:11px;color:var(--ink-soft);font-style:normal}
.menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.menu a,.menu .hasdrop{position:relative;padding:9px 13px;color:var(--ink);font-weight:600;font-size:15px;border-radius:10px;display:inline-flex;align-items:center;gap:5px}
.menu a.on{color:var(--main)}
.menu a.on::after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:3px;border-radius:2px;background:var(--grad)}
.menu a:hover{color:var(--main)}
.hasdrop{position:relative;cursor:default}
.hasdrop .drop{position:absolute;top:100%;left:0;background:var(--panel);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);min-width:140px;padding:6px;display:none;flex-direction:column}
.hasdrop:hover .drop{display:flex}
.drop a{padding:8px 12px;border-radius:8px}
.drop a:hover{background:var(--bg-2)}
.nav-cta{margin-left:4px;display:inline-flex;align-items:center;gap:8px;background:var(--grad);color:#fff;padding:10px 18px;border-radius:12px;font-weight:700;font-size:14.5px;box-shadow:var(--shadow);white-space:nowrap}
.nav-cta .ico{width:16px;height:16px}
.nav-cta:hover{filter:brightness(1.05);color:#fff}
.nav-toggle{display:none;background:none;border:none;font-size:24px;color:var(--ink);cursor:pointer}

/* 按钮 */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;padding:12px 22px;border-radius:12px;font-size:15px;transition:.2s;border:1px solid transparent;cursor:pointer}
.btn .ico{width:18px;height:18px}
.btn-main{background:var(--grad);color:#fff;box-shadow:var(--shadow)}
.btn-main:hover{filter:brightness(1.06);color:#fff}
.btn-ghost{background:var(--panel);color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--main);color:var(--main)}
.btn-big{padding:15px 28px;font-size:16px}

/* 首页 hero(满幅虚化摄影,无独立背景,靠 page-bg) */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;overflow:hidden}
.hero-in{position:relative;z-index:3;display:grid;grid-template-columns:1fr;gap:0;align-items:center;padding:72px 24px;text-align:left}
.hero-tag{display:inline-block;background:var(--bg-2);color:var(--main);font-weight:700;font-size:14px;padding:7px 16px;border-radius:20px;margin-bottom:18px;letter-spacing:.04em}
.hero-copy h1{font-size:60px;letter-spacing:-.01em;margin-bottom:10px}
.hero-copy h1 span{display:block;font-size:36px;color:var(--main);margin-top:8px;font-weight:800}
.hero-sub{font-size:18px;color:var(--ink);max-width:680px;margin:14px 0 30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:24px}
.hero-points{display:flex;gap:10px;flex-wrap:wrap}
.hero-points span{font-size:13px;color:var(--ink-soft);background:var(--panel);border:1px solid var(--line);padding:5px 13px;border-radius:20px}

/* 通用区块 */
.section{padding:78px 0}
.sec-head{text-align:center;max-width:640px;margin:0 auto 44px}
.sec-head h2{font-size:34px;margin-bottom:12px}
.sec-head p{color:var(--ink-soft);font-size:16px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split.rev .split-media{order:-1}
.split-txt h2{font-size:32px;margin-bottom:16px}
.split-txt p{color:var(--ink-soft);margin-bottom:14px}
.split-media{display:flex;flex-direction:column;gap:18px;align-items:center}
.media-frame{width:100%;border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
.media-frame img{width:100%;aspect-ratio:16/10;object-fit:cover}
.ticklist{list-style:none;margin-top:8px}
.ticklist li{display:flex;align-items:center;gap:9px;padding:7px 0;color:var(--ink);font-weight:500}
.ticklist .ico{width:18px;height:18px;color:var(--green)}

/* 气泡功能墙 */
.bubble-flow{background:rgba(255,255,255,.14)}
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.flow-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:24px;transition:.25s;position:relative}
.flow-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.flow-card::after{content:"";position:absolute;bottom:-10px;left:22px;width:18px;height:18px;background:var(--panel);border-right:1px solid var(--line);border-bottom:1px solid var(--line);transform:rotate(45deg);border-radius:2px}
.fhead{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;margin-bottom:8px}
.fhead .ico{width:24px;height:24px;color:var(--main)}
.flow-card p{color:var(--ink-soft);font-size:14.5px}

/* 语音视频 */
.voice-sec .svgbub,.voice-sec .svgwave{width:100%;max-width:420px;height:auto}
.svgwave{width:100%}
.svgbub,.svgwave,.svgdev,.svgglobe,.svgenv{display:block}

/* 多端 */
.device-sec{background:rgba(255,255,255,.08)}
.device-row{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.device-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:26px;text-align:center}
.device-card .svgdev,.device-card svg{width:100%;max-width:150px;margin:0 auto 14px}
.device-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px;margin-bottom:14px}
.device-card strong{font-size:17px}
.device-card p{color:var(--ink-soft);font-size:13.5px;margin-top:4px}

/* 全球连线 */
.globe-sec{background:transparent}
.globe-sec .svgglobe{width:100%;max-width:340px}
.globe-sec .media-frame{margin-top:0}

/* 九宫格 */
.feat-grid{background:rgba(255,255,255,.14)}
.f9{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.f9-cell{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:22px;display:flex;flex-direction:column;gap:8px;transition:.2s}
.f9-cell:hover{border-color:var(--main);box-shadow:var(--shadow)}
.f9-cell .ico{width:26px;height:26px;color:var(--main)}
.f9-cell strong{font-size:16px}
.f9-cell p{color:var(--ink-soft);font-size:13.5px}

/* 场景墙 */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.scene-card{border-radius:16px;overflow:hidden;position:relative;box-shadow:var(--shadow)}
.scene-card img{width:100%;aspect-ratio:4/5;object-fit:cover}
.scene-cap{position:absolute;left:0;right:0;bottom:0;padding:16px;background:linear-gradient(180deg,transparent,rgba(18,55,44,.92));color:#fff}
.scene-cap strong{font-size:16px}
.scene-cap p{font-size:13px;opacity:.85}

/* FAQ */
.faq-list{max-width:760px;margin:0 auto}
.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden}
.faq-item summary{cursor:pointer;padding:18px 22px;font-weight:700;list-style:none;position:relative;padding-right:46px}
.faq-item summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:22px;color:var(--main)}
.faq-item[open] summary::after{content:"−"}
.faq-item p{padding:0 22px 18px;color:var(--ink-soft)}
.faq-more{text-align:center;margin-top:26px}

/* CTA */
.cta-sec{padding-bottom:80px}
.cta-card{background:linear-gradient(120deg,var(--main),var(--coral));border-radius:22px;padding:52px 48px;display:flex;align-items:center;justify-content:space-between;gap:30px;color:#fff;box-shadow:0 20px 50px rgba(15,169,124,.28);flex-wrap:wrap}
.cta-txt h2{font-size:30px;color:#fff}
.cta-txt p{opacity:.92;margin-top:6px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-card .btn-main{background:#fff;color:var(--main);box-shadow:none}
.cta-card .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.cta-card .btn-ghost:hover{border-color:#fff;color:#fff}

/* 页脚 */
.foot{background:var(--main-dark);color:#e6d9c6;margin-top:0}
.foot a{color:#e6d9c6}
.foot a:hover{color:#fff}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;padding:56px 24px 40px}
.foot .wordmark b{color:#fff}
.foot .wordmark i{color:#93aca1}
.foot-brand p{color:#93aca1;font-size:13.5px;margin-top:12px;max-width:300px}
.foot-col h4{color:#fff;font-size:15px;margin-bottom:14px}
.foot-col a{display:block;font-size:14px;padding:5px 0;color:#93aca1}
.foot-copy{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;text-align:center;font-size:13px;color:#93aca1}

/* 子页 hero */
.sub-hero{background:rgba(255,255,255,.42);backdrop-filter:var(--glass-soft);-webkit-backdrop-filter:var(--glass-soft);padding:64px 24px 56px;text-align:center;border-bottom:1px solid var(--line)}
.sub-hero h1{font-size:40px;margin-bottom:10px}
.sub-hero h1 span{display:block;font-size:22px;color:var(--main);margin-top:6px}
.sub-hero p{color:var(--ink-soft);max-width:640px;margin:0 auto 22px;font-size:16px}
.sub-hero .hero-actions{justify-content:center;margin-top:10px}
.crumb{text-align:center;font-size:13px;color:var(--muted);margin-bottom:14px}
.crumb a{color:var(--muted)}

/* 下载页 */
.plat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.plat-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:.25s}
.plat-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.plat-img{height:150px;overflow:hidden}
.plat-img img{width:100%;height:100%;object-fit:cover}
.plat-info{padding:20px}
.plat-info h3{font-size:18px;margin-bottom:6px}
.plat-info p{color:var(--ink-soft);font-size:13.5px;margin-bottom:16px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:26px;text-align:center}
.step em{display:inline-flex;width:44px;height:44px;align-items:center;justify-content:center;background:var(--grad);color:#fff;border-radius:50%;font-style:normal;font-weight:800;font-size:20px;margin-bottom:14px}
.step h3{font-size:17px;margin-bottom:6px}
.step p{color:var(--ink-soft);font-size:13.5px}
.spec-table{width:100%;border-collapse:collapse;background:var(--panel);border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
.spec-table th,.spec-table td{padding:13px 18px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
.spec-table th{background:var(--bg-2);font-weight:700}
.spec-table tr:last-child td{border-bottom:none}

/* 版本对比 */
.cmp-table{width:100%;border-collapse:collapse;background:var(--panel);border-radius:16px;overflow:hidden;box-shadow:var(--shadow)}
.cmp-table th,.cmp-table td{padding:15px 16px;text-align:center;font-size:14.5px;border-bottom:1px solid var(--line)}
.cmp-table th{background:var(--grad);color:#fff;font-weight:700}
.cmp-table td:first-child{text-align:left;font-weight:600}
.cmp-table tr:nth-child(even){background:var(--bg)}

/* 关于/联系 */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.contact-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:30px}
.contact-card .ico{width:30px;height:30px;color:var(--main);margin-bottom:14px}
.contact-card h3{font-size:18px;margin-bottom:8px}
.contact-card p{color:var(--ink-soft);font-size:14.5px}

/* 文章/prose */
.prose{max-width:760px;margin:0 auto}
.prose h2{font-size:26px;margin:30px 0 12px}
.prose h3{font-size:20px;margin:22px 0 10px}
.prose p{color:var(--ink-soft);margin-bottom:14px;font-size:15.5px}
.prose ul,.prose ol{margin:0 0 16px 22px;color:var(--ink-soft)}
.prose li{margin-bottom:7px}
.prose img{border-radius:14px;margin:18px 0}
.sitemap-list{list-style:none}
.sitemap-list li{padding:8px 0;border-bottom:1px solid var(--line)}
.sitemap-list a{font-size:16px;font-weight:600}

/* 搜索 */
.searchbox{display:flex;gap:12px;max-width:560px;margin:0 auto 30px}
.searchbox input{flex:1;border:1px solid var(--line);border-radius:12px;padding:13px 20px;font-size:15px;outline:none;background:var(--panel)}
.search-results a{display:block;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px 22px;margin-bottom:12px;color:var(--ink)}
.search-results a strong{color:var(--main)}

/* 文章页(双栏 + 目录) */
.art-hero{text-align:left;padding:48px 24px 40px}
.art-hero .crumb{margin-bottom:12px}
.art-hero h1{font-size:34px;margin-bottom:12px;line-height:1.3}
.art-lead{font-size:17px;color:var(--ink-soft);max-width:760px;margin:0}
.art-wrap{display:grid;grid-template-columns:230px 1fr;gap:44px;align-items:start}
.art-side{position:sticky;top:90px}
.toc{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:18px;font-size:14px}
.toc strong{display:block;font-size:15px;margin-bottom:10px;color:var(--ink)}
.toc a{display:block;padding:6px 0;color:var(--ink-soft);border-bottom:1px dashed var(--line)}
.toc a:last-child{border-bottom:none}
.toc a:hover{color:var(--main)}
.art-body{max-width:760px}
.art-body h2{font-size:24px;margin:30px 0 12px;padding-left:14px;border-left:4px solid var(--main)}
.art-body p{color:var(--ink-soft);margin-bottom:14px;font-size:16px;line-height:1.85}
.art-body img{border-radius:14px;margin:20px 0;box-shadow:var(--shadow)}
.art-body img:first-of-type{width:100%;aspect-ratio:16/9;object-fit:cover}
.art-conclusion{background:var(--bg-2);border-left:4px solid var(--main);border-radius:0 12px 12px 0;padding:18px 20px;margin:28px 0}
.art-conclusion strong{color:var(--main)}
.art-conclusion p{color:var(--ink);margin-top:6px}
.art-cta{background:linear-gradient(120deg,var(--main),var(--coral));border-radius:18px;padding:26px;text-align:center;margin:26px 0;color:#fff}
.art-cta p{color:#fff;margin-bottom:12px;font-size:16px}
.art-cta .btn-main{background:#fff;color:var(--main)}
.rel-block{margin-top:34px}
.rel-block h3{font-size:20px;margin-bottom:14px}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.rel-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px 18px;display:flex;flex-direction:column;gap:6px;color:var(--ink)}
.rel-card span{font-weight:700}
.rel-card em{font-size:13px;color:var(--main);font-style:normal}

/* 返回顶部 */
.backtop{position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;border:none;font-size:22px;cursor:pointer;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.3s;z-index:60}
.backtop.show{opacity:1;pointer-events:auto}

/* 响应式 */
@media(max-width:960px){
.hero-in{grid-template-columns:1fr;gap:40px;padding:60px 24px}
.hero-copy h1{font-size:46px}
.hero-copy h1 span{font-size:30px}
.split,.split.rev{grid-template-columns:1fr}
.flow-grid,.f9,.scene-grid,.device-row,.plat-grid,.steps,.contact-grid{grid-template-columns:repeat(2,1fr)}
.foot-grid{grid-template-columns:1fr 1fr}
.art-wrap{grid-template-columns:1fr}
.art-side{position:static}
.menu{display:none}
.nav-toggle{display:block;margin-left:auto}
.nav-cta{margin-left:0}
}
@media(max-width:560px){
.flow-grid,.f9,.scene-grid,.device-row,.plat-grid,.steps,.contact-grid,.rel-grid{grid-template-columns:1fr}
.hero-copy h1{font-size:34px}
.sec-head h2{font-size:26px}
}

/* 玻璃拟态统一(满幅虚化摄影) */
.flow-card,.device-card,.f9-cell,.plat-card,.step,.contact-card,.faq-item,.toc,.rel-card,.search-results a,.spec-table,.cmp-table,.drop,.searchbox input{backdrop-filter:var(--glass);-webkit-backdrop-filter:var(--glass)}

/* SVG 动画类占位 */
.svgbub,.svgwave,.svgdev,.svgglobe,.svgenv{}
.art-sec,.steps-sec,.sys-sec,.scene-sec,.faq-sec{}