/* Screen Recorder 资料站 · 暖纸色编辑风 */
:root{
  --paper:#faf9f6; --paper-2:#f3f1ea; --ink:#26231e; --ink-2:#5a544a; --ink-3:#8a8378;
  --line:#e3ded2; --line-2:#d6d0c0;
  --blue:#1663d9; --blue-deep:#0f4ba8; --blue-soft:#eaf1fc;
  --green:#2e7d4f; --green-soft:#e9f4ec; --amber:#b9791f; --amber-soft:#faf3e3;
  --radius:14px; --radius-sm:10px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;background:var(--paper);color:var(--ink);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--blue-deep)}
.container{max-width:1160px;margin:0 auto;padding:0 24px}
b,strong{color:var(--ink)}

/* ---------- 顶栏 ---------- */
.topline{background:var(--ink);color:#d8d2c4;font-size:13px;letter-spacing:.4px}
.topline .container{display:flex;justify-content:space-between;align-items:center;height:38px}
.topline b{color:#fff;font-weight:600}
.site-header{position:sticky;top:0;z-index:50;background:rgba(250,249,246,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:28px;height:64px}
.nav-brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:17px;letter-spacing:.2px}
.nav-brand img{width:30px;height:30px;border-radius:8px}
.nav-brand small{font-weight:400;color:var(--ink-3);font-size:12px;margin-left:2px}
.nav-links{display:flex;align-items:center;gap:24px;margin-left:auto}
.nav-links a{color:var(--ink-2);font-size:15px;padding:6px 2px;border-bottom:2px solid transparent}
.nav-links a:hover{color:var(--ink)}
.nav-links a.active{color:var(--ink);border-bottom-color:var(--blue);font-weight:600}
.nav-cta{background:var(--blue);color:#fff !important;padding:8px 18px !important;border-radius:999px;font-weight:600;border-bottom:none !important}
.nav-cta:hover{background:var(--blue-deep)}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;margin-left:auto;padding:8px}
.nav-toggle span{width:22px;height:2px;background:var(--ink);display:block}

/* ---------- Hero ---------- */
.hero{padding:64px 0 56px;border-bottom:1px solid var(--line);background:
  radial-gradient(1200px 400px at 85% -10%, #eef3fb 0%, transparent 60%), var(--paper)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:1.5px;color:var(--blue);text-transform:uppercase}
.kicker::before{content:"";width:26px;height:2px;background:var(--blue)}
.hero h1{font-size:42px;line-height:1.28;letter-spacing:.5px;margin:18px 0 16px;font-weight:800}
.hero h1 em{font-style:normal;color:var(--blue)}
.hero-desc{color:var(--ink-2);font-size:17px;max-width:560px}
.hero-desc strong{color:var(--ink)}
.hero-cta{display:flex;gap:14px;margin:28px 0 30px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 26px;border-radius:999px;font-size:16px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:all .25s}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-deep);color:#fff;transform:translateY(-1px)}
.btn-ghost{border-color:var(--line-2);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--ink-3);color:var(--ink)}
.hero-facts{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;max-width:560px}
.hero-facts div{padding:14px 10px;text-align:center;border-right:1px solid var(--line)}
.hero-facts div:last-child{border-right:none}
.hero-facts .num{display:block;font-weight:800;font-size:19px;color:var(--ink)}
.hero-facts .lab{font-size:12.5px;color:var(--ink-3)}
.hero-visual{position:relative}
.hero-shot{border:1px solid var(--line-2);border-radius:20px;background:#fff;padding:14px;box-shadow:0 24px 60px -30px rgba(38,35,30,.35);transform:rotate(1.2deg)}
.hero-shot img{border-radius:12px}
.hero-shot figcaption{position:absolute;right:-8px;bottom:22px;background:var(--ink);color:#f5f2ea;font-size:12.5px;padding:7px 14px;border-radius:999px;transform:rotate(-1.2deg);letter-spacing:.5px}
.float-chip{position:absolute;left:-26px;top:38px;background:#fff;border:1px solid var(--line-2);border-radius:12px;padding:10px 14px;font-size:13px;box-shadow:0 12px 30px -18px rgba(38,35,30,.4);transform:rotate(-2deg)}
.float-chip b{color:var(--green)}

/* ---------- 速览条 ---------- */
.strip{border-bottom:1px solid var(--line);background:var(--paper-2)}
.strip .container{display:flex;gap:0;overflow-x:auto}
.strip-item{flex:1;min-width:170px;text-align:center;padding:16px 12px;border-right:1px dashed var(--line-2);font-size:14.5px;color:var(--ink-2)}
.strip-item:last-child{border-right:none}
.strip-item b{color:var(--ink)}

/* ---------- 区块通用 ---------- */
.section{padding:72px 0}
.section.alt{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{margin-bottom:44px}
.sec-head .no{font-size:13px;font-weight:700;letter-spacing:2px;color:var(--ink-3)}
.sec-head h2{font-size:31px;margin-top:8px;letter-spacing:.5px}
.sec-head p{color:var(--ink-2);margin-top:8px;max-width:640px}
.sec-head.row{display:flex;justify-content:space-between;align-items:flex-end;gap:20px}
.sec-head.row .more{white-space:nowrap;font-size:14.5px}

/* ---------- 功能卡片 ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px 22px;transition:all .25s}
.feat:hover{border-color:var(--line-2);box-shadow:0 16px 40px -28px rgba(38,35,30,.35);transform:translateY(-2px)}
.feat .no{font-size:12.5px;font-weight:700;color:var(--blue);letter-spacing:1.5px}
.feat h3{font-size:18.5px;margin:10px 0 8px}
.feat p{font-size:14.5px;color:var(--ink-2)}
.feat.wide{grid-column:span 1}

/* ---------- 图集 ---------- */
.gallery{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.gallery figure{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:10px;transition:all .25s}
.gallery figure:hover{transform:translateY(-3px);box-shadow:0 18px 40px -26px rgba(38,35,30,.4)}
.gallery img{border-radius:8px}
.gallery figcaption{font-size:13px;color:var(--ink-3);text-align:center;padding:8px 2px 2px}

/* ---------- 场景 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.scene{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:22px;position:relative;overflow:hidden}
.scene::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--blue);opacity:.75}
.scene h3{font-size:17px;margin-bottom:6px}
.scene p{font-size:14px;color:var(--ink-2)}
.scene .tag{display:inline-block;margin-top:12px;font-size:12px;color:var(--blue);background:var(--blue-soft);border-radius:999px;padding:3px 10px}

/* ---------- 版本亮点 ---------- */
.hl-wrap{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.hl-list{list-style:none}
.hl-list li{padding:14px 0 14px 34px;border-bottom:1px dashed var(--line);position:relative;font-size:15.5px;color:var(--ink-2)}
.hl-list li::before{content:"v";position:absolute;left:0;top:14px;width:22px;height:22px;border-radius:50%;background:var(--blue-soft);color:var(--blue);font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center}
.hl-list li b{color:var(--ink)}
.hl-shot{border:1px solid var(--line-2);border-radius:18px;background:#fff;padding:12px;box-shadow:0 20px 50px -30px rgba(38,35,30,.35)}

/* ---------- 下载区 ---------- */
.dl-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.pan-card{background:#fff;border:1px solid var(--line-2);border-radius:var(--radius);padding:26px;display:flex;gap:22px;align-items:center;justify-content:space-between;transition:all .25s}
.pan-card:hover{box-shadow:0 18px 46px -28px rgba(38,35,30,.4)}
.pan-info h3{font-size:19px;display:flex;align-items:center;gap:10px}
.pan-dot{width:10px;height:10px;border-radius:50%}
.pan-info p{font-size:14px;color:var(--ink-2);margin-top:6px}
.pan-info .pwd{margin-top:10px;display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);background:var(--paper-2);border:1px dashed var(--line-2);border-radius:8px;padding:4px 10px}
.pan-info .pwd code{color:var(--ink);font-weight:700;letter-spacing:1px}
.btn-dl{background:var(--ink);color:#fff;border:none;border-radius:999px;padding:12px 24px;font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;transition:all .25s}
.btn-dl:hover{background:#000;transform:translateY(-1px)}
.btn-dl.q{background:var(--blue)} .btn-dl.q:hover{background:var(--blue-deep)}
.dl-note{margin-top:18px;font-size:13.5px;color:var(--ink-3);display:flex;gap:18px;flex-wrap:wrap}
.dl-note span{display:inline-flex;align-items:center;gap:6px}
.dl-note i{width:6px;height:6px;border-radius:50%;background:var(--green);display:inline-block}

/* ---------- 三步 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:st}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.step .n{width:34px;height:34px;border-radius:50%;background:var(--ink);color:#f5f2ea;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:15px}
.step h3{font-size:17px;margin:14px 0 6px}
.step p{font-size:14px;color:var(--ink-2)}

/* ---------- FAQ ---------- */
.faq-list{max-width:840px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;margin-bottom:12px;overflow:hidden}
.faq-item summary{list-style:none;cursor:pointer;padding:17px 20px;font-weight:600;font-size:15.5px;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:20px;color:var(--ink-3);line-height:1}
.faq-item[open] summary::after{content:"−"}
.faq-item[open] summary{border-bottom:1px solid var(--line);color:var(--ink)}
.faq-item .a{padding:14px 20px 16px;font-size:14.5px;color:var(--ink-2)}
.faq-item .a b{color:var(--ink)}

/* ---------- 文档页（features/guide） ---------- */
.doc{display:grid;grid-template-columns:220px 1fr;gap:48px;align-items:start}
.doc-toc{position:sticky;top:92px;border-left:2px solid var(--line);padding-left:18px}
.doc-toc h4{font-size:13px;letter-spacing:1.5px;color:var(--ink-3);margin-bottom:12px;font-weight:700}
.doc-toc a{display:block;font-size:14px;color:var(--ink-2);padding:5px 0;border-bottom:none}
.doc-toc a:hover{color:var(--blue)}
.doc-body h2{font-size:25px;margin:44px 0 6px;scroll-margin-top:90px}
.doc-body h2:first-child{margin-top:0}
.doc-body h2 .no{color:var(--blue);font-size:15px;font-weight:700;margin-right:10px;letter-spacing:1px}
.doc-body p{color:var(--ink-2);font-size:15.5px;margin:10px 0}
.doc-body ul{margin:10px 0 0 20px;color:var(--ink-2);font-size:15px}
.doc-body ul li{margin:7px 0}
.doc-body ul li b{color:var(--ink)}
.doc-fig{float:right;width:230px;margin:6px 0 14px 26px;border:1px solid var(--line-2);border-radius:14px;background:#fff;padding:9px}
.doc-fig img{border-radius:9px}
.doc-fig figcaption{font-size:12.5px;color:var(--ink-3);text-align:center;padding-top:7px}

/* ---------- 信息表 ---------- */
.info-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;font-size:14.5px}
.info-table th,.info-table td{padding:12px 18px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.info-table tr:last-child th,.info-table tr:last-child td{border-bottom:none}
.info-table th{width:180px;color:var(--ink-3);font-weight:600;background:var(--paper-2);white-space:nowrap}
.info-table td code{background:var(--paper-2);padding:2px 8px;border-radius:6px;font-size:13px;color:var(--ink)}

/* ---------- 版本记录 ---------- */
.ver{border:1px solid var(--line);border-radius:var(--radius);background:#fff;margin-bottom:16px;overflow:hidden}
.ver-head{display:flex;align-items:center;gap:14px;padding:18px 24px;border-bottom:1px solid var(--line);background:var(--paper-2)}
.ver-head .v{font-weight:800;font-size:17px}
.ver-head .badge{font-size:12px;background:var(--blue);color:#fff;border-radius:999px;padding:2px 10px;font-weight:600}
.ver-head .badge.gray{background:#b6afa1}
.ver-head time{margin-left:auto;color:var(--ink-3);font-size:13.5px}
.ver-body{padding:16px 24px 20px;font-size:14.5px;color:var(--ink-2)}
.ver-body ul{margin:4px 0 0 20px}
.ver-body li{margin:6px 0}

/* ---------- CTA ---------- */
.cta{background:var(--ink);color:#f0ece2;padding:56px 0;text-align:center}
.cta h2{font-size:28px;color:#fff;letter-spacing:.5px}
.cta p{margin:10px 0 26px;color:#b9b2a3}
.cta .btn-primary{box-shadow:0 14px 34px -14px rgba(22,99,217,.6)}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--paper);padding:48px 0 34px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;margin-bottom:30px}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--ink);margin-bottom:10px}
.foot-brand img{width:28px;height:28px;border-radius:7px}
.foot-col p{color:var(--ink-3);font-size:13.5px;max-width:300px}
.foot-col h4{font-size:13.5px;letter-spacing:1px;color:var(--ink);margin-bottom:12px;font-weight:700}
.foot-col ul{list-style:none}
.foot-col li{margin:8px 0}
.foot-col a{color:var(--ink-2)}
.foot-col a:hover{color:var(--blue)}
.foot-bottom{border-top:1px solid var(--line);padding-top:22px;color:var(--ink-3);font-size:13px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* ---------- 二维码弹窗 ---------- */
.qr-mask{position:fixed;inset:0;background:rgba(28,25,20,.55);backdrop-filter:blur(3px);z-index:200;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .25s}
.qr-mask.show{opacity:1;pointer-events:auto}
.qr-dialog{background:#fdfcf9;border-radius:20px;padding:34px 38px 30px;width:min(400px,92vw);text-align:center;position:relative;transform:translateY(14px) scale(.97);transition:transform .25s;box-shadow:0 40px 90px -30px rgba(0,0,0,.5)}
.qr-mask.show .qr-dialog{transform:none}
.qr-close{position:absolute;top:14px;right:18px;font-size:26px;color:var(--ink-3);cursor:pointer;line-height:1;background:none;border:none}
.qr-close:hover{color:var(--ink)}
.qr-title{font-size:20px;font-weight:800}
.qr-sub{font-size:13.5px;color:var(--ink-3);margin:4px 0 20px}
.qr-frame{width:190px;height:190px;margin:0 auto 18px;position:relative;border-radius:16px}
.qr-frame img{width:100%;height:100%;border-radius:12px;position:relative;z-index:2}
.qr-halo{position:absolute;inset:-3px;border-radius:18px;z-index:1;background:var(--blue);animation:haloBreath 2.8s ease-in-out infinite}
@keyframes haloBreath{
  0%,100%{transform:scale(1);opacity:.30}
  50%{transform:scale(1.035);opacity:.14}
}
.qr-tips{text-align:left;margin-top:6px}
.qr-tip{display:flex;gap:9px;align-items:flex-start;font-size:13.5px;color:var(--ink-2);margin:9px 0}
.qr-tip .ic{flex:0 0 18px;width:18px;height:18px;border-radius:50%;font-size:11.5px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-top:2px}
.ic.ok{background:var(--green-soft);color:var(--green)}
.ic.warn{background:var(--amber-soft);color:var(--amber)}
.qr-tip b{color:var(--ink)}

/* ---------- toast ---------- */
.toast{position:fixed;left:50%;bottom:44px;transform:translateX(-50%) translateY(20px);background:var(--ink);color:#f5f2ea;font-size:14px;padding:11px 22px;border-radius:999px;opacity:0;pointer-events:none;transition:all .3s;z-index:300}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- 面包屑 ---------- */
.crumb{padding:18px 0 0;font-size:13.5px;color:var(--ink-3)}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--blue)}
.page-head{padding:34px 0 8px}
.page-head h1{font-size:34px;letter-spacing:.5px}
.page-head p{color:var(--ink-2);margin-top:8px}

/* ---------- 响应式 ---------- */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:32px}
  .feat-grid,.scene-grid,.steps{grid-template-columns:repeat(2,1fr)}
  .gallery{grid-template-columns:repeat(3,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .hl-wrap{grid-template-columns:1fr}
  .doc{grid-template-columns:1fr}
  .doc-toc{position:static;border-left:none;padding-left:0;display:none}
  .float-chip{display:none}
}
@media (max-width:640px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start;padding:18px 24px;gap:16px}
  .nav-links.open{display:flex}
  .nav-toggle{display:flex}
  .topline{display:none}
  .feat-grid,.scene-grid,.steps,.dl-grid{grid-template-columns:1fr}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .hero{padding:44px 0}
  .hero h1{font-size:27px}
  .hero-facts{grid-template-columns:repeat(2,1fr)}
  .hero-facts div:nth-child(2){border-right:none}
  .section{padding:52px 0}
  .pan-card{flex-direction:column;align-items:flex-start;gap:16px}
  .foot-grid{grid-template-columns:1fr}
}