/* 360安全浏览器下载站 — 暖纸底 + 墨色 + 360绿点缀 */
:root{
  --paper:#faf9f6; --paper2:#f3f1ea; --ink:#26231e; --ink2:#5c574d; --ink3:#8a8478;
  --line:#e4e0d5; --card:#ffffff;
  --green:#2fa838; --green-d:#237f2a; --green-bg:#eef7ec;
  --blue:#2c6bd8; --blue-bg:#edf3fd;
  --gold:#b98a2f;
  --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Microsoft YaHei","PingFang SC","Segoe UI",system-ui,sans-serif;background:var(--paper);color:var(--ink);font-size:15px;line-height:1.75}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.wrap{max-width:1160px;margin:0 auto;padding:0 22px}
h1,h2,h3,h4{line-height:1.35;font-weight:700}

/* ===== header ===== */
.site-header{position:sticky;top:0;z-index:50;background:rgba(250,249,246,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.site-header .bar{display:flex;align-items:center;gap:26px;height:62px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand img{height:34px;width:auto}
.brand .bicon{height:36px;width:36px}
.brand:hover{opacity:.85}
.nav{display:flex;gap:4px;flex:1;flex-wrap:wrap}
.nav a{padding:7px 13px;border-radius:8px;font-size:14px;color:var(--ink2);transition:all .18s}
.nav a:hover{color:var(--ink);background:var(--paper2)}
.nav a.on{color:var(--green-d);background:var(--green-bg);font-weight:600}
.hd-cta{flex-shrink:0}
.hd-cta button{background:var(--green);color:#fff;font-size:14px;font-weight:600;padding:9px 18px;border-radius:9px;transition:all .18s;box-shadow:0 2px 8px rgba(47,168,56,.28)}
.hd-cta button:hover{background:var(--green-d);transform:translateY(-1px)}

/* ===== hero ===== */
.hero{padding:52px 0 40px;border-bottom:1px solid var(--line);background:
  radial-gradient(900px 420px at 82% -10%, rgba(47,168,56,.09), transparent 60%),
  radial-gradient(700px 360px at 8% 0%, rgba(44,107,216,.05), transparent 55%)}
.hero .grid{display:grid;grid-template-columns:1.02fr .98fr;gap:46px;align-items:center}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--green-d);background:var(--green-bg);border:1px solid #d3e8cf;border-radius:999px;padding:5px 14px;font-weight:600;margin-bottom:18px}
.kicker .dot{width:7px;height:7px;border-radius:50%;background:var(--green);animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero h1{font-size:37px;letter-spacing:.5px;margin-bottom:6px}
.hero h1 em{font-style:normal;color:var(--green-d)}
.hero .sub{font-size:16px;color:var(--ink2);margin:12px 0 20px;max-width:520px}
.spec-chips{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:26px}
.spec-chips span{font-size:13px;color:var(--ink2);background:var(--card);border:1px solid var(--line);border-radius:8px;padding:6px 12px}
.spec-chips b{color:var(--ink);font-weight:600}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.dl-big{display:inline-flex;align-items:center;gap:9px;font-size:15px;font-weight:700;padding:13px 26px;border-radius:11px;color:#fff;transition:all .18s}
.dl-big svg{width:17px;height:17px;fill:currentColor}
.dl-big.q{background:var(--green);box-shadow:0 4px 14px rgba(47,168,56,.32)}
.dl-big.q:hover{background:var(--green-d);transform:translateY(-2px)}
.dl-big.bd{background:var(--blue);box-shadow:0 4px 14px rgba(44,107,216,.30)}
.dl-big.bd:hover{background:#2159b8;transform:translateY(-2px)}
.hero-shot{border-radius:16px;border:1px solid var(--line);box-shadow:0 24px 60px -22px rgba(38,35,30,.28);overflow:hidden;background:#fff}
.hero-shot img{width:100%}
.hero-shot .bar-top{height:34px;background:#f0eee8;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:6px;padding:0 14px}
.hero-shot .bar-top i{width:10px;height:10px;border-radius:50%;display:block}
.hero-note{margin-top:14px;font-size:12.5px;color:var(--ink3);display:flex;gap:16px;flex-wrap:wrap}
.hero-note i{font-style:normal;color:var(--green)}

/* ===== stats strip ===== */
.stats{border-bottom:1px solid var(--line);background:var(--card)}
.stats .row{display:grid;grid-template-columns:repeat(4,1fr);padding:22px 0}
.stat{padding:4px 18px;border-left:1px solid var(--line)}
.stat:first-child{border-left:none}
.stat b{display:block;font-size:22px;font-weight:800;color:var(--ink)}
.stat b em{font-style:normal;color:var(--green-d);font-size:14px;font-weight:600}
.stat span{font-size:13px;color:var(--ink3)}

/* ===== sections ===== */
.sec{padding:58px 0}
.sec.tight{padding:44px 0}
.sec-head{margin-bottom:30px}
.sec-head .kicker{margin-bottom:12px}
.sec-head h2{font-size:27px}
.sec-head p{color:var(--ink2);margin-top:8px;max-width:640px}
.alt{background:var(--paper2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* feature cards */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feat-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:all .2s}
.feat-card:hover{transform:translateY(-3px);box-shadow:0 14px 34px -14px rgba(38,35,30,.22)}
.feat-card .ph{background:#f6f5f1;border-bottom:1px solid var(--line)}
.feat-card .ph img{width:100%;aspect-ratio:832/896;object-fit:cover}
.feat-card .tx{padding:14px 16px 16px}
.feat-card h3{font-size:15.5px;margin-bottom:4px}
.feat-card p{font-size:13px;color:var(--ink2)}
.feat-card .no{font-size:12px;color:var(--ink3);font-family:Consolas,monospace}

/* dual-core split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.split h3{font-size:21px;margin-bottom:12px}
.split p{color:var(--ink2)}
ul.ticks{margin-top:16px}
ul.ticks li{position:relative;padding:7px 0 7px 30px;color:var(--ink2);font-size:14.5px}
ul.ticks li::before{content:"";position:absolute;left:0;top:12px;width:18px;height:18px;border-radius:50%;background:var(--green-bg) url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%232fa838"><path d="M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z"/></svg>') center/12px no-repeat}
.shot-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:0 16px 40px -20px rgba(38,35,30,.25)}
.shot-card img{width:100%}

/* security grid */
.sec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.sec-item{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px}
.sec-item .ic{width:40px;height:40px;border-radius:10px;background:var(--green-bg);display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.sec-item .ic svg{width:20px;height:20px;fill:var(--green-d)}
.sec-item h3{font-size:15.5px;margin-bottom:5px}
.sec-item p{font-size:13.5px;color:var(--ink2)}
.sec-item b{color:var(--green-d)}

/* gallery */
.gallery{display:grid;grid-template-columns:1.35fr 1fr;gap:18px;align-items:start}
.gallery .stack{display:grid;gap:18px}
.shot{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.shot img{width:100%}
.shot figcaption{padding:11px 16px;font-size:13px;color:var(--ink2);border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:10px}
.shot figcaption b{color:var(--ink);font-weight:600}
.shot.wide{grid-column:1/-1}

/* new-version panel */
.nver{display:grid;grid-template-columns:1fr 1.1fr;gap:40px;align-items:center}
.ver-badge{display:inline-block;background:var(--ink);color:#fff;border-radius:9px;padding:5px 13px;font-size:13px;font-weight:600;margin-bottom:14px}
ul.ver-list li{padding:10px 0;border-bottom:1px dashed var(--line);color:var(--ink2);font-size:14.5px;display:flex;gap:10px}
ul.ver-list li:last-child{border-bottom:none}
ul.ver-list li b{color:var(--ink);font-weight:600;flex-shrink:0}
ul.ver-list li .tag{flex-shrink:0;font-size:12px;color:var(--green-d);background:var(--green-bg);border-radius:6px;padding:1px 8px;height:fit-content;margin-top:3px}

/* download cards */
.pan-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.pan-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;position:relative;overflow:hidden}
.pan-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px}
.pan-card.q::before{background:linear-gradient(90deg,var(--green),#7ed957)}
.pan-card.bd::before{background:linear-gradient(90deg,var(--blue),#6fa3ef)}
.pan-card .ph{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.pan-card .ph .sq{width:44px;height:44px;border-radius:11px;display:flex;align-items:center;justify-content:center}
.pan-card.q .ph .sq{background:var(--green-bg)}
.pan-card.bd .ph .sq{background:var(--blue-bg)}
.pan-card .ph .sq svg{width:24px;height:24px}
.pan-card h3{font-size:18px}
.pan-card .ph span{font-size:12.5px;color:var(--ink3);display:block}
.pan-card ul{margin:12px 0 18px}
.pan-card ul li{font-size:13.5px;color:var(--ink2);padding:5px 0 5px 24px;position:relative}
.pan-card.q ul li::before,.pan-card.bd ul li::before{content:"";position:absolute;left:2px;top:11px;width:14px;height:14px;border-radius:50%;background:center/9px no-repeat}
.pan-card.q ul li::before{background-color:var(--green-bg);background-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%232fa838"><path d="M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z"/></svg>')}
.pan-card.bd ul li::before{background-color:var(--blue-bg);background-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%232c6bd8"><path d="M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z"/></svg>')}
.pan-card .dl-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:8px;color:#fff;font-size:15px;font-weight:700;padding:13px;border-radius:10px;transition:all .18s}
.pan-card.q .dl-btn{background:var(--green)}
.pan-card.q .dl-btn:hover{background:var(--green-d)}
.pan-card.bd .dl-btn{background:var(--blue)}
.pan-card.bd .dl-btn:hover{background:#2159b8}
.pan-card .dl-btn svg{width:16px;height:16px;fill:#fff}
.notice{margin-top:18px;display:flex;gap:12px;align-items:flex-start;background:#fdf6e8;border:1px solid #f0dfb8;border-radius:12px;padding:15px 18px;font-size:13.5px;color:#7a5c1c}
.notice svg{width:19px;height:19px;fill:var(--gold);flex-shrink:0;margin-top:2px}
.notice b{font-weight:700}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:st}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;position:relative}
.step .n{width:34px;height:34px;border-radius:10px;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;margin-bottom:14px}
.step h3{font-size:16px;margin-bottom:7px}
.step p{font-size:13.5px;color:var(--ink2)}

/* faq */
details.faq{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
details.faq summary{cursor:pointer;padding:16px 20px;font-size:15px;font-weight:600;list-style:none;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:20px;color:var(--ink3);transition:transform .2s;flex-shrink:0}
details.faq[open] summary::after{transform:rotate(45deg)}
details.faq .a{padding:0 20px 18px;color:var(--ink2);font-size:14px}
details.faq .a b{color:var(--ink)}

/* ===== doc layout (features/guide/faq/versions) ===== */
.doc{max-width:1160px;margin:0 auto;padding:44px 22px 64px;display:grid;grid-template-columns:224px 1fr;gap:44px;align-items:start}
.doc.single{display:block}
.toc{position:sticky;top:86px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px}
.toc h4{font-size:13px;color:var(--ink3);letter-spacing:1px;margin-bottom:10px;font-weight:600}
.toc a{display:block;padding:6px 10px;font-size:13.5px;color:var(--ink2);border-radius:7px;border-left:2px solid transparent}
.toc a:hover{color:var(--green-d);background:var(--green-bg)}
.doc-body{min-width:0}
.doc-body article{margin-bottom:40px;scroll-margin-top:86px}
.doc-body article h2{font-size:22px;padding-bottom:12px;border-bottom:2px solid var(--ink);margin-bottom:16px;display:flex;align-items:baseline;gap:10px}
.doc-body article h2 .idx{font-family:Consolas,monospace;font-size:14px;color:var(--green-d)}
.doc-body article h3{font-size:16.5px;margin:18px 0 8px}
.doc-body p{color:var(--ink2);margin-bottom:10px}
.doc-body p b,.doc-body li b{color:var(--ink)}
.doc .shot{margin:14px 0}
.kv{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;font-size:14px}
.kv{border-collapse:separate;border-spacing:0}
.kv th,.kv td{padding:11px 16px;text-align:left;border-bottom:1px solid var(--line)}
.kv tr:last-child td{border-bottom:none}
.kv th{background:var(--paper2);font-weight:600;width:150px;color:var(--ink)}
.kv td{color:var(--ink2)}
.kv td b{color:var(--green-d)}
table.grid-t{width:100%;border-collapse:separate;border-spacing:0;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;font-size:13.5px;margin:12px 0}
table.grid-t th,table.grid-t td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--line)}
table.grid-t tr:last-child td{border-bottom:none}
table.grid-t th{background:var(--paper2);font-weight:600;color:var(--ink)}
table.grid-t td{color:var(--ink2)}
.callout{border-left:3px solid var(--green);background:var(--green-bg);border-radius:0 10px 10px 0;padding:13px 16px;font-size:13.5px;color:var(--ink2);margin:14px 0}
.callout.blue{border-left-color:var(--blue);background:var(--blue-bg)}
.callout.warn{border-left-color:var(--gold);background:#fdf6e8}

/* versions timeline */
.ver-item{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px 22px;margin-bottom:14px;position:relative}
.ver-item .vh{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:8px}
.ver-item .vh b{font-size:16.5px}
.ver-item .vh .vn{font-family:Consolas,monospace;color:var(--green-d);font-size:13.5px}
.ver-item .vh time{font-size:12.5px;color:var(--ink3);margin-left:auto}
.ver-item li{font-size:13.5px;color:var(--ink2);padding:3px 0 3px 20px;position:relative}
.ver-item li::before{content:"";position:absolute;left:4px;top:12px;width:6px;height:6px;border-radius:50%;background:var(--green)}
.ver-item.latest{border-color:#bcd9b6;background:linear-gradient(180deg,#fbfefb,#f3faf2)}
.ver-item.latest .vh b::after{content:"当前版本";font-size:11.5px;color:#fff;background:var(--green);border-radius:5px;padding:1px 7px;margin-left:8px;font-weight:600;vertical-align:2px}

/* page-hero for subpages */
.page-hero{padding:40px 0 34px;border-bottom:1px solid var(--line);background:
  radial-gradient(760px 320px at 88% -20%, rgba(47,168,56,.10), transparent 60%)}
.page-hero h1{font-size:29px}
.page-hero p{color:var(--ink2);margin-top:8px;max-width:680px}
.crumb{font-size:13px;color:var(--ink3);margin-bottom:14px}
.crumb a{color:var(--ink3)}
.crumb a:hover{color:var(--green-d)}

/* ===== footer ===== */
.site-footer{background:#221f1a;color:#cfc9bd;margin-top:64px}
.ft-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding:44px 0 34px}
.ft-grid h4{color:#fff;font-size:14.5px;margin-bottom:13px;font-weight:600}
.ft-grid p{font-size:13px;color:#a29b8d;line-height:1.8}
.ft-grid a{display:block;font-size:13px;color:#a29b8d;padding:4px 0;transition:color .15s}
.ft-grid a:hover{color:#8fd494}
.ft-grid .fbrand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.ft-grid .fbrand img{height:30px;width:auto;filter:brightness(0) invert(1);opacity:.92}
.ft-btns button{display:flex;align-items:center;gap:8px;width:100%;font-size:13px;color:#cfc9bd;background:#332f28;border:1px solid #454036;border-radius:9px;padding:10px 14px;margin-bottom:9px;transition:all .15s}
.ft-btns button:hover{border-color:var(--green);color:#fff}
.ft-btns button svg{width:15px;height:15px;fill:#8fd494;flex-shrink:0}
.ft-tip{font-size:12.5px;color:#a29b8d;background:#2b2721;border-radius:9px;padding:12px 14px;line-height:1.7}
.ft-bottom{border-top:1px solid #38332b;padding:18px 0 22px;font-size:12.5px;color:#8a8478;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
.ft-bottom a{color:#8a8478}
.ft-bottom a:hover{color:#8fd494}

/* ===== download modal ===== */
.dl-mask{position:fixed;inset:0;z-index:200;background:rgba(24,22,18,.55);backdrop-filter:blur(3px);display:flex;align-items:center;justify-content:center;padding:20px;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .22s,visibility .22s}
.dl-mask.show{opacity:1;visibility:visible;pointer-events:auto}
.dl-panel{background:var(--paper);border-radius:18px;max-width:430px;width:100%;padding:26px 26px 22px;position:relative;transform:translateY(14px) scale(.97);transition:transform .22s;box-shadow:0 30px 80px -20px rgba(0,0,0,.45);border:1px solid var(--line)}
.dl-mask.show .dl-panel{transform:translateY(0) scale(1)}
.dl-panel .close{position:absolute;top:14px;right:16px;font-size:22px;color:var(--ink3);width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center}
.dl-panel .close:hover{background:var(--paper2);color:var(--ink)}
.dl-panel h3{font-size:18px;margin-bottom:2px;padding-right:30px}
.dl-panel .chn{font-size:13px;color:var(--ink3);margin-bottom:18px}
.dl-flex{display:flex;gap:22px;align-items:flex-start}
.qr-wrap{flex-shrink:0;text-align:center}
.qr-halo{display:inline-block;padding:7px;border-radius:13px;background:#fff;border:1px solid var(--line);animation:haloBreath 2.8s ease-in-out infinite;--halo:47,168,56}
.qr-halo img{width:132px;height:132px;border-radius:8px;display:block}
@keyframes haloBreath{
  0%,100%{box-shadow:0 0 0 0 rgba(var(--halo),.30),0 0 10px 1px rgba(var(--halo),.16);transform:scale(1)}
  50%{box-shadow:0 0 0 7px rgba(var(--halo),0),0 0 16px 3px rgba(var(--halo),.22);transform:scale(1.032)}
}
.qr-wrap .scan-tip{font-size:12.5px;color:var(--ink2);margin-top:9px;font-weight:600}
.dl-info{flex:1;min-width:0}
.dl-info ul li{font-size:13px;color:var(--ink2);padding:6px 0 6px 24px;position:relative;line-height:1.6}
.dl-info ul li::before{content:"";position:absolute;left:2px;top:12px;width:14px;height:14px;border-radius:50%;background:var(--green-bg) url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%232fa838"><path d="M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z"/></svg>') center/9px no-repeat}
.dl-foot{margin-top:18px;padding-top:14px;border-top:1px dashed var(--line);font-size:12px;color:var(--ink3);line-height:1.7}

/* toast */
.toast{position:fixed;left:50%;bottom:9vh;transform:translateX(-50%) translateY(16px);background:rgba(28,26,22,.92);color:#fff;font-size:14px;padding:11px 22px;border-radius:999px;z-index:300;opacity:0;pointer-events:none;transition:all .25s;max-width:86vw}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* responsive */
@media (max-width:960px){
  .hero .grid{grid-template-columns:1fr;gap:30px}
  .hero h1{font-size:29px}
  .stats .row{grid-template-columns:repeat(2,1fr);gap:16px 0}
  .stat:nth-child(3){border-left:none}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .sec-grid{grid-template-columns:repeat(2,1fr)}
  .split,.nver,.gallery,.pan-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .doc{grid-template-columns:1fr;gap:24px;padding-top:28px}
  .toc{position:static}
  .site-header .bar{gap:12px;height:auto;padding:10px 0;flex-wrap:wrap}
  .nav{order:3;width:100%;flex-basis:100%}
  .nav a{padding:6px 10px}
  .ft-grid{grid-template-columns:1fr 1fr;gap:26px}
  .dl-flex{flex-direction:column;align-items:center}
  .dl-info ul li{padding-left:24px}
}
@media (max-width:560px){
  .feat-grid,.sec-grid{grid-template-columns:1fr}
  .ft-grid{grid-template-columns:1fr}
  .hero-cta{width:100%}
  .dl-big{flex:1;justify-content:center}
  .hd-cta button{padding:8px 13px}
}