/* Opera 浏览器官网站点样式 */
:root{
  --red:#ff1b2d;
  --red-dark:#d90f20;
  --ink:#191924;
  --ink-2:#2b2b3d;
  --gray:#6a6a7a;
  --gray-light:#f5f5f8;
  --line:#e7e7ee;
  --purple:#5b2fd6;
  --radius:14px;
  --shadow:0 10px 30px rgba(25,25,36,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);background:#fff;line-height:1.75;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:inline-block}
.container{max-width:1120px;margin:0 auto;padding:0 24px}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.nav-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px}
.nav-brand img{width:30px;height:30px;border-radius:8px}
.nav-brand span em{font-style:normal;color:var(--red)}
.nav-menu{display:flex;gap:6px;align-items:center}
.nav-menu a{
  padding:8px 15px;border-radius:999px;font-size:15px;color:var(--ink-2);
  transition:background .2s,color .2s;
}
.nav-menu a:hover{background:var(--gray-light);color:var(--ink)}
.nav-menu a.active{background:var(--ink);color:#fff}
.nav-cta{
  background:var(--red);color:#fff !important;padding:9px 20px !important;
  font-weight:600;box-shadow:0 4px 14px rgba(255,27,45,.35);
}
.nav-cta:hover{background:var(--red-dark) !important}
.nav-toggle{display:none}

/* ===== Hero ===== */
.hero{
  background:
    radial-gradient(900px 420px at 85% -10%,rgba(91,47,214,.22),transparent 60%),
    radial-gradient(700px 380px at -10% 110%,rgba(255,27,45,.10),transparent 60%),
    linear-gradient(180deg,#14141f 0%,#1c1c2e 100%);
  color:#fff;padding:84px 0 0;overflow:hidden;
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding-bottom:72px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#ffd7db;
  background:rgba(255,27,45,.16);border:1px solid rgba(255,27,45,.4);
  padding:5px 14px;border-radius:999px;margin-bottom:22px;
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:#3ddc84;display:inline-block}
.hero h1{font-size:42px;line-height:1.25;font-weight:800;letter-spacing:-.5px}
.hero h1 em{font-style:normal;color:var(--red);text-shadow:0 0 24px rgba(255,27,45,.45)}
.hero p{margin:20px 0 30px;color:#b9b9cc;font-size:17px;max-width:480px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  border:none;cursor:pointer;font-size:16px;font-weight:600;
  padding:14px 30px;border-radius:12px;transition:transform .18s,box-shadow .18s,background .18s;
  font-family:inherit;
}
.btn-primary{background:var(--red);color:#fff;box-shadow:0 8px 24px rgba(255,27,45,.4)}
.btn-primary:hover{background:var(--red-dark);transform:translateY(-2px)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.22)}
.btn-ghost:hover{background:rgba(255,255,255,.15)}
.btn-purple{background:var(--purple);color:#fff;box-shadow:0 8px 24px rgba(91,47,214,.35)}
.btn-purple:hover{filter:brightness(1.1);transform:translateY(-2px)}
.hero-meta{font-size:13px;color:#8b8ba3;margin-top:18px}
.hero-shot{
  border-radius:16px;overflow:hidden;box-shadow:0 30px 70px rgba(0,0,0,.5);
  border:1px solid rgba(255,255,255,.1);
  position:relative;
}
.hero-shot img{display:block;width:100%}
.hero-shot::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(160deg,rgba(255,255,255,.08),transparent 40%);
}

/* ===== 数据条 ===== */
.stats-band{background:#fff;border-bottom:1px solid var(--line)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:34px 0}
.stat{text-align:center}
.stat b{display:block;font-size:30px;font-weight:800;color:var(--ink);letter-spacing:-.5px}
.stat b em{font-style:normal;color:var(--red)}
.stat span{font-size:13.5px;color:var(--gray)}

/* ===== 通用区块 ===== */
.section{padding:76px 0}
.section.alt{background:var(--gray-light)}
.section-head{max-width:640px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head .kicker{
  color:var(--red);font-weight:700;font-size:13.5px;letter-spacing:2.5px;
  text-transform:uppercase;display:block;margin-bottom:10px;
}
.section-head h2{font-size:32px;font-weight:800;letter-spacing:-.4px;line-height:1.3}
.section-head p{color:var(--gray);margin-top:12px;font-size:16px}

/* 功能卡片 */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;transition:transform .22s,box-shadow .22s;position:relative;overflow:hidden;
}
.feature-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--red),var(--purple));
  opacity:0;transition:opacity .22s;
}
.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.feature-card:hover::before{opacity:1}
.feature-card .icon{
  width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(255,27,45,.12),rgba(91,47,214,.12));
  margin-bottom:18px;
}
.feature-card .icon svg{width:26px;height:26px;stroke:var(--red)}
.feature-card h3{font-size:19px;margin-bottom:10px;font-weight:700}
.feature-card p{color:var(--gray);font-size:14.5px}

/* 截图画廊 */
.shot-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.shot{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);background:#fff}
.shot img{display:block;width:100%;transition:transform .35s}
.shot:hover img{transform:scale(1.02)}
.shot figcaption{padding:14px 18px;font-size:14px;color:var(--gray);border-top:1px solid var(--line)}
.shot.tall{grid-row:span 2}

/* 双栏图文 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split .pic{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line)}
.split .pic img{display:block;width:100%}
.split h3{font-size:26px;font-weight:800;margin-bottom:16px;letter-spacing:-.3px}
.split p{color:var(--gray);margin-bottom:14px}
.check-list{list-style:none;margin-top:8px}
.check-list li{
  padding:9px 0 9px 34px;position:relative;color:var(--ink-2);font-size:15.5px;
  border-bottom:1px dashed var(--line);
}
.check-list li:last-child{border-bottom:none}
.check-list li::before{
  content:"✓";position:absolute;left:2px;top:8px;width:22px;height:22px;border-radius:50%;
  background:rgba(61,220,132,.14);color:#1fa45c;font-size:13px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
}

/* ===== 下载区 ===== */
.dl-band{
  background:
    radial-gradient(600px 300px at 15% 0%,rgba(255,27,45,.16),transparent 55%),
    radial-gradient(600px 300px at 85% 100%,rgba(91,47,214,.2),transparent 55%),
    #14141f;
  color:#fff;padding:80px 0;
}
.dl-band .section-head h2{color:#fff}
.dl-cards{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:10px}
.dl-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:18px;padding:32px;display:flex;gap:24px;align-items:center;flex-wrap:wrap;
}
.dl-card.quark{border-color:rgba(63,134,255,.35)}
.dl-card.baidu{border-color:rgba(41,125,248,.35)}
.qr-wrap{
  padding:8px;background:#fff;border-radius:14px;flex:0 0 auto;
  animation:qr-breath 2.8s ease-in-out infinite;
}
@keyframes qr-breath{
  0%,100%{box-shadow:0 0 0 3px rgba(255,27,45,.18);transform:scale(1)}
  50%{box-shadow:0 0 0 7px rgba(255,27,45,.32);transform:scale(1.025)}
}
.qr-wrap img{display:block;width:138px;height:138px}
.dl-info{flex:1;min-width:200px}
.dl-info h3{font-size:20px;font-weight:700;margin-bottom:6px;display:flex;align-items:center;gap:9px}
.dl-info h3 .tag{
  font-size:11px;font-weight:600;padding:2px 9px;border-radius:999px;
  background:rgba(61,220,132,.15);color:#5df0a0;letter-spacing:.5px;
}
.dl-info p{font-size:13.5px;color:#a8a8c0;margin-bottom:14px}
.dl-tip{
  margin-top:26px;background:rgba(255,196,0,.08);border:1px solid rgba(255,196,0,.25);
  border-radius:12px;padding:14px 18px;font-size:13.5px;color:#ffd76e;
  display:flex;gap:10px;align-items:flex-start;
}
.dl-tip svg{flex:0 0 auto;width:18px;height:18px;stroke:#ffd76e;margin-top:2px}

/* 资源详情表（下载页） */
.res-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.res-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px}
.spec-table{width:100%;border-collapse:collapse;font-size:14.5px}
.spec-table th,.spec-table td{text-align:left;padding:11px 6px;border-bottom:1px solid var(--line)}
.spec-table th{color:var(--gray);font-weight:500;width:110px;white-space:nowrap}
.spec-table td{color:var(--ink-2);font-weight:600}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:none}

/* ===== 步骤 ===== */
.steps{counter-reset:step;display:grid;gap:18px}
.step{
  display:grid;grid-template-columns:56px 1fr;gap:22px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;
  transition:box-shadow .2s;
}
.step:hover{box-shadow:var(--shadow)}
.step-num{
  counter-increment:step;width:56px;height:56px;border-radius:16px;
  background:linear-gradient(135deg,var(--red),var(--purple));color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:800;
}
.step-num::before{content:counter(step)}
.step h3{font-size:18px;font-weight:700;margin-bottom:6px}
.step p{color:var(--gray);font-size:14.5px}
.step .pic{margin-top:14px;border-radius:10px;overflow:hidden;border:1px solid var(--line)}
.step .pic img{display:block;width:100%}

/* ===== FAQ ===== */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:12px;margin-bottom:14px;background:#fff;overflow:hidden}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  padding:19px 24px;font-size:16.5px;font-weight:600;font-family:inherit;color:var(--ink);
  display:flex;justify-content:space-between;align-items:center;gap:16px;
}
.faq-q .arr{flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--gray-light);
  display:flex;align-items:center;justify-content:center;font-size:15px;color:var(--gray);
  transition:transform .25s,background .25s,color .25s}
.faq-item.open .faq-q .arr{transform:rotate(45deg);background:var(--red);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 24px 20px;color:var(--gray);font-size:15px}
.faq-a-inner a{color:var(--red);border-bottom:1px dashed rgba(255,27,45,.4)}

/* ===== 时间线 ===== */
.timeline{position:relative;max-width:760px;margin:0 auto;padding-left:34px}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(var(--red),var(--purple))}
.tl-item{position:relative;padding:0 0 34px 22px}
.tl-item::before{
  content:"";position:absolute;left:-32px;top:7px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--red);box-shadow:0 0 0 4px rgba(255,27,45,.12);
}
.tl-item time{font-weight:800;color:var(--red);font-size:15px;letter-spacing:.5px}
.tl-item h3{font-size:18px;margin:4px 0 6px}
.tl-item p{color:var(--gray);font-size:14.5px}

/* ===== 弹窗 ===== */
.modal-mask{
  position:fixed;inset:0;background:rgba(15,15,25,.66);backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;z-index:200;padding:20px;
  opacity:0;pointer-events:none;transition:opacity .25s;
}
.modal-mask.show{opacity:1;pointer-events:auto}
.modal{
  background:#fff;border-radius:20px;max-width:520px;width:100%;padding:36px 34px 30px;
  text-align:center;position:relative;transform:translateY(14px);transition:transform .25s;
  max-height:90vh;overflow:auto;
}
.modal-mask.show .modal{transform:translateY(0)}
.modal-close{
  position:absolute;top:14px;right:14px;width:34px;height:34px;border-radius:50%;
  border:none;background:var(--gray-light);cursor:pointer;font-size:17px;color:var(--gray);
  transition:background .2s,color .2s;
}
.modal-close:hover{background:var(--red);color:#fff}
.modal h3{font-size:21px;font-weight:800;margin-bottom:6px}
.modal .sub{color:var(--gray);font-size:14px;margin-bottom:24px}
.modal .qr-wrap{margin:0 auto 18px;width:fit-content}
.modal .qr-wrap img{width:168px;height:168px}
.modal .brand-line{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  padding:5px 14px;border-radius:999px;margin-bottom:8px;
}
.modal .brand-line.quark{background:rgba(63,134,255,.1);color:#2f6dff}
.modal .brand-line.baidu{background:rgba(41,125,248,.1);color:#297df8}
.modal .note{
  margin-top:20px;background:#fff8e6;border:1px solid #ffe3a3;border-radius:10px;
  padding:12px 16px;font-size:13px;color:#8a6d1a;text-align:left;
}
.modal .note b{color:#6b5410}

/* ===== 页脚 ===== */
.site-footer{background:#14141f;color:#9c9cb4;padding:56px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:36px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.site-footer a{display:block;padding:5px 0;transition:color .2s}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:22px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px;color:#73738c}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:#fff;margin-bottom:12px}
.footer-brand img{width:28px;height:28px;border-radius:7px}

/* ===== 响应式 ===== */
@media (max-width:920px){
  .hero-grid,.split,.dl-cards,.res-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:1fr 1fr}
  .shot-grid{grid-template-columns:1fr}
  .shot.tall{grid-row:auto}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero h1{font-size:33px}
}
@media (max-width:640px){
  .feature-grid{grid-template-columns:1fr}
  .nav-menu{
    position:fixed;top:66px;left:0;right:0;background:#fff;flex-direction:column;
    align-items:stretch;padding:12px 20px 20px;gap:4px;border-bottom:1px solid var(--line);
    display:none;box-shadow:var(--shadow);
  }
  .nav-menu.open{display:flex}
  .nav-menu a{padding:12px 14px}
  .nav-toggle{display:flex;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
  .nav-toggle span{width:22px;height:2.5px;background:var(--ink);border-radius:2px;transition:.25s}
  .hero{padding-top:48px}
  .hero h1{font-size:28px}
  .section{padding:54px 0}
  .section-head h2{font-size:25px}
  .dl-card{justify-content:center;text-align:center}
  .dl-info{display:flex;flex-direction:column;align-items:center}
}