/* QFRemote 官网 — 整站视觉大改（对标大厂产品站）：
   浅色高级感底 + 深蓝标题 + 亮蓝主渐变 + 玻璃卡片 + 信号弧母题 + 橙点点缀。
   色板/圆角/阴影与 ~/workspace/qfremote/design-system.md 对齐；
   深色只克制用于「自动重连」专区与页脚，卡片深色用深灰蓝、不用纯黑。 */
:root{
  --bg:#f7faff; --bg-soft:#eff5fe;
  --ink:#0b2b5b; --txt:#243b5e; --txt2:#54687f; --txt3:#8494ac;
  --line:#dfe9f7; --line2:#c9d9f2;
  --blue:#2470e0; --blue-hi:#3f8cff;
  --grad:linear-gradient(180deg,#3f8cff,#2470e0);
  --orange:#ff8a1e; --orange-txt:#d96f06;
  --navy0:#081f47; --navy1:#0d3170;
  --radius:20px; --wrap:1140px;
  --shadow-card:0 12px 40px rgba(13,49,112,.12);
  --shadow-btn:0 10px 22px rgba(20,90,220,.35);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px;overflow-x:clip;-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--txt); line-height:1.7; overflow-x:hidden; background:var(--bg);
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
::selection{background:rgba(63,140,255,.25)}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
a:focus-visible,button:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:6px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.mono{font-family:ui-monospace,"SF Mono",Consolas,monospace;font-size:.86em;word-break:break-all}

/* 背景装饰：信号弧 + 柔光（浅色克制版） */
.bg-decor{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.arcs{position:absolute;fill:none;stroke:rgba(36,112,224,.13);stroke-width:1.2}
.arcs-a{width:560px;height:560px;top:-180px;right:-160px}
.arcs-b{width:480px;height:480px;bottom:-200px;left:-180px;stroke:rgba(36,112,224,.09)}
.glow{position:absolute;border-radius:50%;filter:blur(100px)}
.glow-a{width:560px;height:560px;top:-200px;right:6%;background:rgba(63,140,255,.17)}
.glow-b{width:420px;height:420px;top:640px;left:-160px;background:rgba(63,140,255,.10)}

/* ===== 顶栏：毛玻璃白，吸顶；左品牌 / 中导航 / 右上登录+注册 ===== */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.82);backdrop-filter:blur(18px) saturate(1.6);-webkit-backdrop-filter:blur(18px) saturate(1.6);
  border-bottom:1px solid rgba(201,217,242,.65);transition:box-shadow .3s;
}
header.scrolled{box-shadow:0 10px 32px rgba(13,49,112,.10)}
.nav{display:flex;align-items:center;gap:24px;height:68px;position:relative}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);flex:none}
.brand:hover{text-decoration:none}
.brand-tile{width:36px;height:36px;border-radius:10px;overflow:hidden;box-shadow:0 4px 14px rgba(30,90,255,.35);flex:none}
.brand-tile img{width:100%;height:100%}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.3px}
.nav-links{display:flex;gap:26px;margin:0 auto}
.nav-links a{color:#43597a;font-size:15px;font-weight:500;position:relative;padding:6px 0;white-space:nowrap}
.nav-links a:hover{color:var(--ink);text-decoration:none}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;border-radius:2px;background:linear-gradient(90deg,var(--blue-hi),var(--blue));transition:width .25s}
.nav-links a:hover::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:none}
.lang-btn{
  background:#fff;color:var(--txt2);border:1px solid var(--line2);
  border-radius:999px;padding:6px 14px;font-size:13px;cursor:pointer;flex:none;font-family:inherit;
  transition:border-color .2s,color .2s;
}
.lang-btn:hover{border-color:var(--blue);color:var(--blue)}
.btn-nav-ghost{
  display:inline-flex;align-items:center;height:40px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line2);background:rgba(255,255,255,.65);color:var(--blue);
  font-size:14.5px;font-weight:600;white-space:nowrap;transition:border-color .2s,background .2s;
}
.btn-nav-ghost:hover{text-decoration:none;border-color:var(--blue);background:var(--bg-soft)}
.btn-nav-primary{
  display:inline-flex;align-items:center;height:40px;padding:0 20px;border-radius:999px;
  background:var(--grad);color:#fff;font-size:14.5px;font-weight:600;white-space:nowrap;
  box-shadow:0 6px 16px rgba(20,90,220,.30);transition:transform .18s,box-shadow .18s;
}
.btn-nav-primary:hover{text-decoration:none;transform:translateY(-1px);box-shadow:0 9px 20px rgba(20,90,220,.40)}
.nav-burger{
  display:none;width:40px;height:40px;border:1px solid var(--line2);border-radius:12px;background:#fff;
  cursor:pointer;flex:none;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .25s,opacity .25s}
header.menu-open .nav-burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
header.menu-open .nav-burger span:nth-child(2){opacity:0}
header.menu-open .nav-burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-panel{display:none}
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-burger{display:flex}
  .nav-panel{
    display:block;max-height:0;overflow:hidden;transition:max-height .3s ease;
    background:rgba(255,255,255,.96);border-top:1px solid transparent;
  }
  header.menu-open .nav-panel{max-height:420px;border-top-color:var(--line)}
  .nav-panel a{
    display:block;padding:13px 24px;color:var(--txt);font-size:16px;font-weight:500;
    border-bottom:1px solid var(--line);
  }
  .nav-panel a:last-child{border-bottom:none}
  .nav-panel a:hover{text-decoration:none;background:var(--bg-soft);color:var(--ink)}
}
@media (max-width:560px){
  .wrap{padding:0 16px}
  .nav{gap:10px}
  .nav-actions{gap:8px}
  .brand{gap:9px}
  .brand-name{font-size:17px}
  .brand-tile{width:32px;height:32px}
  .btn-nav-primary{padding:0 14px;height:38px;font-size:13.5px}
  .btn-nav-ghost{display:none}
  .lang-btn{padding:5px 10px}
}
@media (max-width:400px){
  .brand-name{display:none}
}

/* ===== 品牌区 ===== */
.hero{
  padding:96px 0 84px;position:relative;
  background:linear-gradient(180deg,#e9f2fe 0%,#f7faff 72%,#ffffff 100%);
}
.hero-grid{display:grid;grid-template-columns:1.02fr 1fr;gap:56px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--txt2);font-size:13.5px;margin-bottom:24px;
  box-shadow:0 2px 10px rgba(13,49,112,.06);
}
.dot-live{width:8px;height:8px;border-radius:50%;background:#22b573;box-shadow:0 0 0 0 rgba(34,181,115,.45);animation:pulse 2.2s infinite;flex:none}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(34,181,115,.45)}70%{box-shadow:0 0 0 8px rgba(34,181,115,0)}100%{box-shadow:0 0 0 0 rgba(34,181,115,0)}}
.hero h1{font-size:clamp(40px,5.4vw,64px);line-height:1.16;font-weight:800;letter-spacing:.5px;color:var(--ink)}
.hero h1 .grad{background:linear-gradient(92deg,var(--blue) 5%,var(--blue-hi) 55%,var(--orange) 135%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin:24px 0 34px;font-size:18px;color:#43597a;max-width:34em;line-height:1.75}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;align-items:flex-start}
.hero-dl-stack{display:flex;flex-direction:column;gap:12px}
.hero-dl-stack .btn{justify-content:center}
.btn{
  display:inline-flex;align-items:center;gap:9px;border-radius:12px;padding:14px 28px;
  font-size:16px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:transform .18s,box-shadow .18s,background .18s,border-color .18s;
}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow-btn)}
.btn-primary:hover{box-shadow:0 14px 30px rgba(20,90,220,.42)}
.btn-glass{background:#fff;border-color:var(--line2);color:var(--ink);box-shadow:0 2px 10px rgba(13,49,112,.06)}
.btn-glass:hover{border-color:var(--blue);color:var(--blue)}
.btn-ver{font-size:13px;opacity:.85;font-weight:500}
.btn-ic{flex:none;display:block}
.btn-ic-win{width:19px;height:19px}
.btn-ic-and{width:29px;height:auto}
.btn-big{width:100%;justify-content:center;font-size:17px;padding:16px 26px}
.hero-note{margin-top:20px;color:var(--txt3);font-size:14px}

.hero-visual{position:relative}
.win-frame{
  border-radius:20px;overflow:hidden;border:1px solid var(--line);background:#fff;
  box-shadow:0 30px 80px rgba(13,49,112,.18),0 4px 16px rgba(13,49,112,.06);
}
.win-bar{display:flex;align-items:center;gap:7px;padding:11px 15px;background:linear-gradient(180deg,#f4f8ff,#e9f1fd);border-bottom:1px solid var(--line)}
.wdot{width:11px;height:11px;border-radius:50%}
.wdot.r{background:#ff5f57}.wdot.y{background:#febc2e}.wdot.g{background:#28c840}
.win-title{margin-left:8px;font-size:13px;color:var(--txt2);letter-spacing:.4px}
.win-light{margin-left:auto;display:flex}
.win-light i{width:9px;height:9px;border-radius:50%;background:#22b573;box-shadow:0 0 8px rgba(34,181,115,.8)}
.orbit{position:absolute;top:-34px;right:-26px;width:110px;height:110px;pointer-events:none}
.orbit-ring{position:absolute;inset:0;border-radius:50%;border:1.5px solid rgba(36,112,224,.35);animation:spin 14s linear infinite}
.orbit-ring::before{content:"";position:absolute;inset:14px;border-radius:50%;border:1px dashed rgba(36,112,224,.22)}
.orbit-dot{position:absolute;top:2px;left:50%;width:9px;height:9px;margin-left:-4.5px;border-radius:50%;background:var(--orange);box-shadow:0 0 10px rgba(255,138,30,.8);transform-origin:4.5px 53px;animation:spin 14s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.chip{
  position:absolute;display:flex;align-items:center;gap:8px;padding:9px 15px;border-radius:999px;
  background:rgba(255,255,255,.94);border:1px solid var(--line);backdrop-filter:blur(8px);
  font-size:13.5px;color:var(--txt);box-shadow:0 14px 32px rgba(13,49,112,.16);
}
.chip-a{left:-16px;bottom:64px}
.chip-b{right:-10px;bottom:-16px}
.chip-bar{width:64px;height:5px;border-radius:3px;background:#e3ecf9;overflow:hidden}
.chip-bar i{display:block;height:100%;width:55%;border-radius:3px;background:linear-gradient(90deg,var(--orange),#ffc46b);animation:load 2.6s ease-in-out infinite}
@keyframes load{0%{transform:translateX(-70%)}60%,100%{transform:translateX(120%)}}

/* ===== 通用区块 ===== */
.section{padding:88px 0}
.section.band{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section.band-dark{
  background:linear-gradient(180deg,var(--navy1) 0%,var(--navy0) 100%);
  color:#eaf1fd;border-top:1px solid var(--navy0);border-bottom:1px solid var(--navy0);
}
.wrap.narrow{max-width:860px}
.kicker{color:var(--orange-txt);font-weight:700;font-size:13.5px;letter-spacing:2.5px;text-transform:uppercase;margin-bottom:12px}
.band-dark .kicker{color:#ffb03a}
.sec-title{font-size:clamp(28px,3.6vw,38px);font-weight:800;line-height:1.35;margin-bottom:16px;color:var(--ink)}
.band-dark .sec-title{color:#fff}
.sec-lead{color:var(--txt2);font-size:16.5px;max-width:56em}
.band-dark .sec-lead{color:#b9cdee}

/* 功能卡片 */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:40px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 24px;box-shadow:0 1px 3px rgba(13,49,112,.05);
  transition:transform .22s,box-shadow .22s,border-color .22s;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-card);border-color:var(--line2)}
.card .ic{width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(145deg,#eaf2ff,#dceaff);border:1px solid var(--line2);margin-bottom:16px}
.card .ic svg{width:25px;height:25px;fill:none;stroke:var(--blue);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:17.5px;margin-bottom:8px;color:var(--ink)}
.card p{color:var(--txt2);font-size:14.8px}
.card-link{display:inline-block;margin-top:12px;font-weight:600;font-size:14.8px;color:var(--blue);text-decoration:none}
.card-link:hover{text-decoration:underline}

/* 自动重连三层（深蓝专区内的玻璃卡） */
.layers{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:40px}
.layer{
  position:relative;border-radius:var(--radius);padding:32px 26px 28px;overflow:hidden;
  background:rgba(255,255,255,.07);border:1px solid rgba(140,180,255,.24);
  backdrop-filter:blur(6px);transition:background .22s,transform .22s;
}
.layer:hover{background:rgba(255,255,255,.11);transform:translateY(-4px)}
.layer::before{content:"";position:absolute;top:0;left:26px;right:26px;height:2px;background:linear-gradient(90deg,var(--blue-hi),transparent)}
.layer-num{
  width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:17px;color:#fff;background:var(--grad);
  box-shadow:0 8px 18px rgba(20,90,220,.5);margin-bottom:16px;position:relative;
}
.layer-num::after{content:"";position:absolute;inset:-7px;border-radius:50%;border:1px solid rgba(140,180,255,.4)}
.layer h3{font-size:18px;margin-bottom:9px;color:#fff}
.layer p{color:#b9cdee;font-size:15px}

/* 截图画廊 */
.gallery{display:flex;gap:18px;overflow-x:auto;padding:28px 2px 14px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.gallery::-webkit-scrollbar{height:8px}
.gallery::-webkit-scrollbar-thumb{background:#c9d9f2;border-radius:4px}
.shot{flex:0 0 min(520px,84vw);scroll-snap-align:start}
.shot figure{border-radius:18px;overflow:hidden;border:1px solid var(--line);box-shadow:0 18px 44px rgba(13,49,112,.14);background:var(--bg-soft);height:320px}
.shot img{width:100%;height:100%;object-fit:contain}
.shot figcaption{margin-top:12px;color:var(--txt2);font-size:14px;text-align:center}

/* 下载（结构与行为保持不变，仅视觉融入新设计） */
.dl-card{
  display:grid;grid-template-columns:1.5fr .9fr;gap:40px;margin-top:36px;
  background:#fff;border:1px solid var(--line);border-radius:24px;padding:40px;
  box-shadow:0 24px 60px rgba(13,49,112,.13);
}
.dl-plat{display:flex;align-items:center;gap:16px;margin-bottom:22px}
.win-logo{width:40px;height:40px;flex:none}
.android-logo{width:46px;height:28px;flex:none}
.dl-logo-big{display:block}
.dl-logo-win{width:104px;height:104px}
.dl-logo-android{width:150px;height:92px}
.dl-plat h3{font-size:23px;color:var(--ink)}
.dl-req{color:var(--txt3);font-size:14px}
.dl-meta{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:12px 26px;margin-bottom:22px}
.dl-meta li{display:flex;flex-direction:column}
.dl-meta span{color:var(--txt3);font-size:13px}
.dl-meta strong{font-size:15.5px;font-weight:600;color:var(--ink)}
.sha{display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:#f2f7ff;border:1px solid var(--line);border-radius:12px;padding:11px 14px}
.sha-label{color:var(--txt3);font-size:12.5px;letter-spacing:1px;flex:none}
.sha code{font-family:ui-monospace,Consolas,monospace;font-size:12.5px;word-break:break-all;color:var(--ink);flex:1;min-width:180px}
.copy-btn{background:#fff;border:1px solid var(--line2);color:var(--blue);border-radius:8px;padding:4px 12px;font-size:13px;cursor:pointer;flex:none;font-family:inherit;transition:border-color .2s}
.copy-btn:hover{border-color:var(--blue)}
.dl-tip{margin-top:16px;color:var(--txt2);font-size:14px}
.dl-right{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;border-left:1px solid var(--line);padding-left:40px}
.dl-history{font-size:14.5px}
.dl-note{color:var(--txt3);font-size:13px}

/* 更新日志时间线 */
.timeline{position:relative;margin-top:38px;padding-left:30px}
.timeline::before{content:"";position:absolute;left:8px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,var(--blue),rgba(36,112,224,.06))}
.tl-item{position:relative;padding-bottom:34px}
.tl-item:last-child{padding-bottom:4px}
.tl-item::before{content:"";position:absolute;left:-28.5px;top:7px;width:13px;height:13px;border-radius:50%;
  background:#fff;border:3px solid var(--blue-hi);box-shadow:0 0 0 4px rgba(63,140,255,.15)}
.tl-item.latest::before{border-color:var(--orange);box-shadow:0 0 0 4px rgba(255,138,30,.18)}
.tl-head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.tl-ver{font-size:20px;font-weight:800;color:var(--ink)}
.tl-badge{background:linear-gradient(135deg,var(--orange),#ff7a1a);color:#fff;font-size:12px;font-weight:700;border-radius:999px;padding:2px 10px}
.tl-date{color:var(--txt3);font-size:13.5px}
.tl-item ul{margin:10px 0 0 18px;color:var(--txt2);font-size:15px}
.tl-item li{margin:4px 0}
.tl-more[hidden]{display:none}
.tl-toggle{display:block;margin:2px 0 0 30px;background:none;border:1px solid var(--line2);color:var(--blue);
  border-radius:999px;padding:9px 22px;font-size:14.5px;font-family:inherit;cursor:pointer;transition:border-color .2s}
.tl-toggle:hover{border-color:var(--blue)}

/* FAQ */
.faq-list{margin-top:34px;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:border-color .2s}
.faq-item:hover{border-color:var(--line2)}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:14px;background:none;border:none;color:var(--ink);
  font-size:16px;font-weight:600;text-align:left;padding:18px 22px;cursor:pointer;font-family:inherit}
.faq-q .fx{flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line2);display:flex;align-items:center;justify-content:center;
  font-weight:400;color:var(--blue);transition:transform .25s}
.faq-item.open .fx{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 20px;color:var(--txt2);font-size:15px}

/* 联系 */
.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;margin-top:34px;box-shadow:0 1px 3px rgba(13,49,112,.05)}
.contact-card .mail{font-size:16.5px;font-weight:600}
.ct-sub{color:var(--txt2);margin:10px 0 20px;font-size:15px}
#feedbackForm{display:flex;flex-direction:column;gap:12px}
#feedbackForm textarea,#feedbackForm input{
  width:100%;background:#fbfcfe;border:1px solid #d7e1f2;border-radius:12px;color:var(--ink);
  padding:13px 15px;font-size:16px;font-family:inherit;resize:vertical;transition:border-color .2s,box-shadow .2s;
}
#feedbackForm textarea:focus,#feedbackForm input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px rgba(36,112,224,.15)}
#feedbackForm .btn{align-self:flex-start}
.fb-status{font-size:14px;min-height:1.4em}
.fb-status.ok{color:#12753c}
.fb-status.err{color:#d92d20}

/* 页脚（深蓝收尾） */
footer{background:linear-gradient(180deg,var(--navy1),var(--navy0));padding:44px 0 calc(50px + env(safe-area-inset-bottom,0px));margin-top:0}
.foot{display:flex;flex-direction:column;gap:8px}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16.5px;color:#fff}
.foot-brand img{width:28px;height:28px;border-radius:8px}
.foot-note{color:#8fa5c9;font-size:13.5px;max-width:60em}
.foot-links{color:#8fa5c9;font-size:13.5px}
.foot-links a{color:#cfe0fa;text-decoration:none}
.foot-links a:hover{text-decoration:underline}
.foot-sep{margin:0 8px;color:#5f779e}
.foot-copy{color:#8fa5c9;font-size:13.5px}

/* 滚动渐入 */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .65s ease,transform .65s ease}
.reveal.in{opacity:1;transform:none}

/* 响应式 */
@media (max-width:1020px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .layers{grid-template-columns:1fr}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero{padding-top:64px}
  .chip-a{left:2px}
  .chip-b{right:2px}
}
@media (max-width:760px){
  .section{padding:60px 0}
  .dl-card{grid-template-columns:1fr;padding:26px}
  .dl-right{border-left:none;border-top:1px solid var(--line);padding:24px 0 0}
  .dl-meta{grid-template-columns:1fr}
  .orbit{display:none}
  .contact-card{padding:24px 20px}
  .shot figure{height:250px}
  .sha{flex-direction:column;align-items:stretch;gap:8px}
  .sha code{min-width:0}
  .sha .copy-btn{align-self:flex-end}
  .glow{filter:blur(64px)}
  .arcs-a{width:420px;height:420px}
  .arcs-b{width:360px;height:360px}
}
@media (max-width:520px){
  .cards{grid-template-columns:1fr}
  .hero-btns{flex-direction:column}
  .hero-dl-stack{width:100%}
  .hero-btns .btn{width:100%;justify-content:center}
  .hero{padding:52px 0 60px}
}
/* 触屏点按目标：小按钮与文字链接在粗指针设备上放大命中区（桌面不受影响） */
@media (pointer:coarse){
  .lang-btn{min-height:40px;padding:8px 14px}
  .btn-nav-primary{min-height:40px}
  .copy-btn{min-height:40px;padding:8px 16px}
  .card-link{display:inline-block;padding:8px 4px}
  .dl-history{display:inline-block;padding:8px 4px}
  .foot-links a{display:inline-block;padding:10px 4px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001s!important;transition-duration:.001s!important}
  .reveal{opacity:1;transform:none}
}