/* ScreenToGif 中文站 - 手工样式 */
:root{
  --blue:#0067c0;
  --blue-deep:#004e8c;
  --blue-soft:#e8f1fa;
  --ink:#1c2733;
  --ink-2:#425263;
  --ink-3:#68788a;
  --line:#dde5ee;
  --bg:#f5f7fa;
  --white:#fff;
  --radius:12px;
  --shadow:0 6px 24px rgba(15,27,45,.07);
  --shadow-lg:0 16px 48px rgba(15,27,45,.16);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Segoe UI","Microsoft YaHei","PingFang SC","Hiragino Sans GB",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--blue);text-decoration:none;transition:color .2s}
a:hover{color:var(--blue-deep)}
img{max-width:100%;display:block}
.container{max-width:1120px;margin:0 auto;padding:0 20px}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);backdrop-filter:saturate(1.6) blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:19px}
.brand img{width:32px;height:32px}
.brand small{font-size:12px;font-weight:400;color:var(--ink-3);margin-left:2px}
.main-nav{display:flex;gap:6px;align-items:center}
.main-nav a{
  color:var(--ink-2);font-size:15px;padding:8px 14px;border-radius:8px;
}
.main-nav a:hover{background:var(--blue-soft);color:var(--blue)}
.main-nav a.active{color:var(--blue);font-weight:600}
.nav-dl{
  background:linear-gradient(135deg,var(--blue),#2b8fdd);color:#fff !important;
  padding:9px 18px !important;border-radius:8px;font-weight:600;box-shadow:0 3px 10px rgba(0,103,192,.3);
}
.nav-dl:hover{color:#fff !important;transform:translateY(-1px)}
@media(max-width:820px){
  .brand small{display:none}
  .main-nav a:not(.nav-dl){display:none}
}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  border:none;cursor:pointer;font-size:16px;font-weight:600;
  border-radius:10px;padding:13px 30px;transition:all .25s;font-family:inherit;
}
.btn-primary{
  background:linear-gradient(135deg,var(--blue),#2b8fdd);color:#fff;
  box-shadow:0 6px 18px rgba(0,103,192,.32);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(0,103,192,.42)}
.btn-outline{
  background:#fff;color:var(--blue);border:1.5px solid var(--blue);
}
.btn-outline:hover{background:var(--blue-soft)}
.btn-quark{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;box-shadow:0 6px 18px rgba(37,99,235,.3)}
.btn-baidu{background:linear-gradient(135deg,#06a6ff,#0084ff);color:#fff;box-shadow:0 6px 18px rgba(0,132,255,.3)}
.btn-quark:hover,.btn-baidu:hover{transform:translateY(-2px)}
.btn-sm{padding:9px 22px;font-size:14px}

/* ===== Hero ===== */
.hero{
  background:
    radial-gradient(900px 420px at 85% -10%,rgba(0,103,192,.14),transparent 60%),
    radial-gradient(700px 380px at -5% 110%,rgba(43,143,221,.10),transparent 60%),
    linear-gradient(180deg,#fbfdff 0%,var(--bg) 100%);
  padding:72px 0 64px;border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-size:38px;line-height:1.3;letter-spacing:-.5px;margin-bottom:16px}
.hero h1 .hl{color:var(--blue)}
.hero p.lead{font-size:17px;color:var(--ink-2);margin-bottom:26px;max-width:560px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--ink-2);
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 14px;
}
.chip b{color:var(--blue);font-weight:600}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:22px}
.hero-note{font-size:13px;color:var(--ink-3)}
.hero-note .warn{color:#b45309}

/* 窗口截图外框 */
.win-frame{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-lg);overflow:hidden;
}
.win-bar{
  display:flex;align-items:center;gap:8px;padding:10px 14px;
  background:#f0f4f9;border-bottom:1px solid var(--line);
}
.win-bar i{width:11px;height:11px;border-radius:50%;display:inline-block}
.win-bar .r{background:#f26d6d}.win-bar .y{background:#f2c94c}.win-bar .g{background:#6fcf7c}
.win-bar span{font-size:12px;color:var(--ink-3);margin-left:6px}
.win-frame img{width:100%}

@media(max-width:880px){
  .hero{padding:48px 0 44px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero h1{font-size:29px}
}

/* ===== 区块 ===== */
.section{padding:64px 0}
.section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{text-align:center;max-width:640px;margin:0 auto 42px}
.sec-head .kicker{
  display:inline-block;font-size:13px;font-weight:600;color:var(--blue);
  letter-spacing:3px;text-transform:uppercase;margin-bottom:10px;
}
.sec-head h2{font-size:28px;letter-spacing:-.3px;margin-bottom:12px}
.sec-head p{color:var(--ink-2)}

/* 功能卡 */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s;
}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(15,27,45,.12)}
.card .ico{
  width:46px;height:46px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:var(--blue-soft);margin-bottom:16px;
}
.card .ico svg{width:24px;height:24px;stroke:var(--blue)}
.card h3{font-size:18px;margin-bottom:8px}
.card p{font-size:14.5px;color:var(--ink-2)}
@media(max-width:900px){.grid-3{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.grid-3,.grid-4{grid-template-columns:1fr}}

/* 步骤 */
.steps{counter-reset:step}
.step{display:flex;gap:22px;margin-bottom:34px}
.step:last-child{margin-bottom:0}
.step .no{
  counter-increment:step;flex:0 0 46px;width:46px;height:46px;border-radius:50%;
  background:linear-gradient(135deg,var(--blue),#2b8fdd);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:19px;font-weight:700;
  box-shadow:0 6px 14px rgba(0,103,192,.28);
}
.step .no::before{content:counter(step)}
.step h3{font-size:18px;margin:8px 0 6px}
.step p{color:var(--ink-2);font-size:15px}
.step .step-img{margin-top:14px;max-width:560px}

/* FAQ */
.faq-list{max-width:780px;margin:0 auto}
details.faq{
  background:#fff;border:1px solid var(--line);border-radius:10px;
  margin-bottom:14px;overflow:hidden;
}
details.faq summary{
  cursor:pointer;list-style:none;padding:17px 22px;font-weight:600;font-size:16px;
  display:flex;justify-content:space-between;align-items:center;gap:12px;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";font-size:22px;color:var(--blue);font-weight:400;flex:0 0 auto}
details.faq[open] summary::after{content:"−"}
details.faq[open] summary{border-bottom:1px solid var(--line);color:var(--blue)}
details.faq .faq-body{padding:16px 22px 20px;color:var(--ink-2);font-size:15px}
details.faq .faq-body p+p{margin-top:8px}

/* ===== 下载区 ===== */
.dl-panel{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow);padding:34px;margin-bottom:26px;
}
.dl-flex{display:flex;gap:36px;align-items:center;flex-wrap:wrap}
.dl-info{flex:1 1 380px}
.dl-info h3{font-size:20px;margin-bottom:14px}
.dl-info ul{list-style:none}
.dl-info li{
  display:flex;gap:10px;color:var(--ink-2);font-size:14.5px;margin-bottom:9px;
}
.dl-info li .tick{color:#1a9e56;flex:0 0 auto}
.dl-side{flex:0 0 240px;text-align:center}
.dl-side .qr-wrap{margin-bottom:14px}
.dl-side .qr-tip{font-size:13px;color:var(--ink-3);margin-bottom:16px}
.pwd-tip{display:inline-block;font-size:13px;color:#b45309;background:#fff7e8;border:1px solid #f5dfb8;border-radius:6px;padding:2px 10px;margin-top:8px}

/* 呼吸边框二维码 */
.qr-breath{
  display:inline-block;padding:6px;border-radius:12px;background:#fff;
  animation:qrBreathe 3.2s ease-in-out infinite;
}
@keyframes qrBreathe{
  0%,100%{box-shadow:0 0 0 3px rgba(0,103,192,.18),0 0 0 1px rgba(0,103,192,.12)}
  50%{box-shadow:0 0 0 7px rgba(0,103,192,.34),0 0 14px rgba(0,103,192,.22)}
}
.qr-breath img{width:150px;height:150px;border-radius:6px}
.qr-breath.lg img{width:180px;height:180px}

/* 版本信息表 */
.spec-table{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden;box-shadow:var(--shadow)}
.spec-table th,.spec-table td{padding:13px 20px;border-bottom:1px solid var(--line);font-size:14.5px;text-align:left}
.spec-table th{width:140px;background:#f7fafd;color:var(--ink-2);font-weight:600;white-space:nowrap}
.spec-table tr:last-child td{border-bottom:none}

/* 时效提醒 */
.fresh-tip{
  display:flex;gap:14px;align-items:flex-start;
  background:linear-gradient(135deg,#fffaf0,#fff5e6);
  border:1px solid #f3ddb0;border-radius:12px;padding:18px 22px;margin:24px 0;
}
.fresh-tip .ico{font-size:20px;line-height:1.5}
.fresh-tip p{font-size:14px;color:#8a5a13}
.fresh-tip b{color:#7a4a08}

/* ===== 页脚 ===== */
.site-footer{background:#0f1b2d;color:#93a4ba;padding:52px 0 26px;margin-top:70px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:36px;margin-bottom:34px}
.foot-grid h4{color:#e8eef6;font-size:15px;margin-bottom:14px}
.foot-grid a{display:block;color:#93a4ba;font-size:14px;margin-bottom:9px}
.foot-grid a:hover{color:#fff}
.foot-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:12px}
.foot-brand img{width:28px;height:28px}
.foot-desc{font-size:13.5px;line-height:1.8}
.copyright{
  border-top:1px solid rgba(255,255,255,.08);padding-top:22px;
  font-size:13px;color:#5d7089;text-align:center;
}
@media(max-width:760px){.foot-grid{grid-template-columns:1fr}}

/* ===== 弹窗 ===== */
.modal-mask{
  position:fixed;inset:0;background:rgba(10,20,35,.55);backdrop-filter:blur(3px);
  display:none;align-items:center;justify-content:center;z-index:999;padding:20px;
}
.modal-mask.show{display:flex;animation:maskIn .25s ease}
@keyframes maskIn{from{opacity:0}to{opacity:1}}
.modal{
  background:#fff;border-radius:18px;max-width:400px;width:100%;
  padding:34px 30px 28px;text-align:center;position:relative;
  animation:popIn .28s cubic-bezier(.34,1.4,.64,1);box-shadow:var(--shadow-lg);
}
@keyframes popIn{from{opacity:0;transform:scale(.9) translateY(10px)}to{opacity:1;transform:scale(1)}}
.modal .close{
  position:absolute;top:12px;right:14px;border:none;background:none;
  font-size:24px;color:var(--ink-3);cursor:pointer;line-height:1;
}
.modal .close:hover{color:var(--ink)}
.modal h3{font-size:20px;margin-bottom:6px}
.modal .sub{font-size:13.5px;color:var(--ink-3);margin-bottom:20px}
.modal .qr-wrap{margin-bottom:16px}
.modal .pan-name{display:inline-flex;align-items:center;gap:7px;font-size:14px;color:var(--ink-2);margin-bottom:18px}
.modal .pan-name .dot{width:8px;height:8px;border-radius:50%}
.modal .btn{width:100%}
.modal .m-note{margin-top:16px;font-size:12.5px;color:var(--ink-3);line-height:1.7;text-align:left;
  background:#f7fafd;border-radius:8px;padding:10px 14px}
.modal .m-note b{color:#b45309}

/* 面包屑 */
.crumbs{padding:20px 0 0;font-size:13.5px;color:var(--ink-3)}
.crumbs a{color:var(--ink-3)}
.crumbs a:hover{color:var(--blue)}

/* 页头横幅(内页) */
.page-head{
  background:
    radial-gradient(700px 300px at 90% -20%,rgba(0,103,192,.12),transparent 60%),
    linear-gradient(180deg,#fbfdff,var(--bg));
  border-bottom:1px solid var(--line);padding:44px 0 38px;
}
.page-head h1{font-size:30px;margin-bottom:10px;letter-spacing:-.3px}
.page-head p{color:var(--ink-2);max-width:680px}

/* 文章排版 */
.article{background:#fff;border:1px solid var(--line);border-radius:14px;padding:36px 40px;box-shadow:var(--shadow)}
.article h2{font-size:22px;margin:34px 0 14px;padding-left:12px;border-left:4px solid var(--blue)}
.article h2:first-child{margin-top:0}
.article h3{font-size:17px;margin:22px 0 10px}
.article p{color:var(--ink-2);margin-bottom:12px;font-size:15.5px}
.article ul,.article ol{margin:0 0 14px 22px;color:var(--ink-2);font-size:15.5px}
.article li{margin-bottom:7px}
.article figure{margin:18px 0;text-align:center}
.article figcaption{font-size:13px;color:var(--ink-3);margin-top:8px}
.article .img-note{font-size:13.5px;background:var(--blue-soft);border-radius:8px;padding:10px 16px;color:#2a4a68;margin:14px 0}
@media(max-width:640px){.article{padding:24px 18px}}