/* 星海影视 APP 官网 · v5 模板 */
:root{
  --brand:#00b4c0;
  --brand-d:#00909c;
  --brand-2:#0a9bc4;
  --brand-soft:#e6f8f9;
  --grad:linear-gradient(135deg,#3be3d3 0%,#00c8c8 45%,#0a9bc4 100%);
  --ink:#0f1b2d;
  --ink2:#334155;
  --muted:#64748b;
  --faint:#94a3b8;
  --bg:#fff;
  --soft:#f5f8fb;
  --soft2:#edf2f7;
  --line:#e5eaf0;
  --dark:#0b1524;
  --shadow-sm:0 1px 2px rgba(15,27,45,.05),0 2px 8px rgba(15,27,45,.04);
  --shadow:0 4px 12px rgba(15,27,45,.04),0 18px 44px rgba(15,27,45,.08);
  --shadow-lg:0 40px 90px -24px rgba(8,48,72,.35);
  --hh:68px;
  --wrap:1200px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--hh) + 16px)}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.7 var(--font);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button,input{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
svg{flex:none}
[hidden],.hidden{display:none!important}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.container{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.ico{width:20px;height:20px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;border-radius:12px;font-size:15px;font-weight:600;white-space:nowrap;transition:background .18s,box-shadow .18s,transform .18s,border-color .18s,color .18s}
.btn:active{transform:translateY(1px)}
.btn svg{width:20px;height:20px}
.btn-brand{background:var(--brand);color:#fff;box-shadow:0 8px 20px -6px rgba(0,180,192,.55)}
.btn-brand:hover{background:var(--brand-d)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#1e2c42}
.btn-line{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn-line:hover{border-color:var(--brand);color:var(--brand-d)}
.btn-white{background:#fff;color:var(--ink)}
.btn-white:hover{background:#eefbfc}
.btn-glass{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.35)}
.btn-glass:hover{background:rgba(255,255,255,.24)}
.btn-lg{height:54px;padding:0 30px;font-size:16px;border-radius:14px}
.btn-sm{height:36px;padding:0 16px;font-size:13px;border-radius:10px}
.btn-block{width:100%}
.link{color:var(--brand-d);font-weight:600;display:inline-flex;align-items:center;gap:4px}
.link:hover{text-decoration:underline}
.link svg{width:14px;height:14px}

/* ---------- 顶栏 ---------- */
.hd{position:fixed;left:0;right:0;top:0;z-index:50;height:var(--hh);background:rgba(255,255,255,.82);-webkit-backdrop-filter:saturate(180%) blur(16px);backdrop-filter:saturate(180%) blur(16px);border-bottom:1px solid transparent;transition:border-color .2s,background .2s}
.hd.is-scrolled{background:rgba(255,255,255,.96);border-bottom-color:var(--line)}
.hd .container{display:flex;align-items:center;height:100%;gap:40px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo img{width:36px;height:36px;border-radius:10px}
.logo b{font-size:19px;font-weight:800;letter-spacing:.02em}
.logo small{display:block;font-size:10px;color:var(--faint);letter-spacing:.12em;line-height:1;margin-top:2px;font-weight:600}
.hd-nav{display:flex;align-items:center;gap:4px;height:100%}
.hd-nav a{position:relative;display:flex;align-items:center;height:100%;padding:0 14px;font-size:15px;color:var(--ink2);transition:color .15s}
.hd-nav a:hover{color:var(--brand-d)}
.hd-nav a[aria-current="page"]{color:var(--ink);font-weight:700}
.hd-nav a[aria-current="page"]::after{content:"";position:absolute;left:14px;right:14px;bottom:0;height:3px;border-radius:3px 3px 0 0;background:var(--brand)}
.hd-nav .m-only{display:none}
.hd.open .hd-nav .m-only{display:flex}
.hd-act{margin-left:auto;display:flex;align-items:center;gap:12px}
.hd-web{font-size:14px;color:var(--muted)}
.hd-web:hover{color:var(--ink)}
.hd-dl{position:relative}
.qr-pop{position:absolute;right:0;top:calc(100% + 14px);width:200px;padding:18px;border-radius:16px;background:#fff;box-shadow:var(--shadow);border:1px solid var(--line);text-align:center;opacity:0;visibility:hidden;transform:translateY(6px);transition:.2s}
.qr-pop::before{content:"";position:absolute;right:28px;top:-7px;width:12px;height:12px;background:#fff;border-left:1px solid var(--line);border-top:1px solid var(--line);transform:rotate(45deg)}
.hd-dl:hover .qr-pop,.hd-dl:focus-within .qr-pop{opacity:1;visibility:visible;transform:none}
.qr-pop canvas{width:140px;height:140px;margin:0 auto}
.qr-pop b{display:block;margin-top:10px;font-size:14px}
.qr-pop span{font-size:12px;color:var(--muted)}
.menu-btn{display:none;width:42px;height:42px;margin-left:auto;border-radius:10px;place-items:center}
.menu-btn svg{width:24px;height:24px}
.hd-holder{height:var(--hh)}

/* ---------- 首屏 ---------- */
.hero{position:relative;overflow:hidden;padding:calc(var(--hh) + 56px) 0 0;background:linear-gradient(180deg,#eefbfc 0%,#f6fbfd 55%,#fff 100%)}
.hero::before{content:"";position:absolute;right:-12%;top:-30%;width:900px;height:900px;border-radius:50%;background:radial-gradient(circle,rgba(0,200,200,.20),rgba(0,200,200,0) 62%);pointer-events:none}
.hero::after{content:"";position:absolute;left:-14%;top:20%;width:640px;height:640px;border-radius:50%;background:radial-gradient(circle,rgba(10,155,196,.12),rgba(10,155,196,0) 65%);pointer-events:none}
.hero .container{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) 520px;gap:40px;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px 0 6px;border-radius:999px;background:#fff;box-shadow:var(--shadow-sm);font-size:13px;color:var(--ink2)}
.hero-tag i{font-style:normal;height:22px;line-height:22px;padding:0 9px;border-radius:999px;background:var(--grad);color:#fff;font-size:12px;font-weight:700}
.hero-brand{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px}
.hero-brand img{width:40px;height:40px;border-radius:11px;box-shadow:0 8px 18px -8px rgba(0,150,170,.6)}
.hero-brand h1{font-size:18px;font-weight:700;letter-spacing:.02em}
.hero-slogan{margin-top:28px;font-size:clamp(40px,4.6vw,58px);font-weight:800;line-height:1.2;letter-spacing:.01em}
.hero-slogan em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-desc{margin-top:18px;max-width:520px;font-size:17px;color:var(--muted);line-height:1.8}
/* 首屏下载卡：二维码 + 三个系统按钮合为一体 */
.dlp{display:flex;align-items:center;gap:22px;max-width:560px;margin-top:34px;padding:18px 22px 18px 18px;border-radius:22px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
.dlp-qr{flex:none;width:116px;height:116px;padding:6px;border-radius:14px;border:1px solid var(--line);background:#fff}
.dlp-qr canvas{display:block;width:100%;height:100%}
.dlp-main{flex:1;min-width:0}
.dlp-t{display:block;font-size:17px;font-weight:800;line-height:1.4}
.dlp-s{display:block;margin-top:2px;font-size:13px;color:var(--muted)}
.dlp-btns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:14px}
.os-btn{display:flex;align-items:center;justify-content:center;gap:7px;height:48px;padding:0 10px;border-radius:12px;background:var(--soft);border:1px solid transparent;color:var(--ink);font-size:15px;font-weight:700;white-space:nowrap;transition:background .18s,border-color .18s,color .18s,box-shadow .18s}
.os-btn:hover{background:#fff;border-color:var(--brand);color:var(--brand-d)}
.os-btn svg{width:20px;height:20px}
.os-btn em{display:none;font-style:normal}
.os-btn.is-main{order:-1;background:var(--brand);color:#fff;box-shadow:0 10px 22px -10px rgba(0,180,192,.85)}
.os-btn.is-main:hover{background:var(--brand-d);border-color:transparent;color:#fff}
.hero-ver{display:flex;flex-wrap:wrap;align-items:center;gap:6px 20px;margin-top:20px;font-size:13px;color:var(--muted)}
.hero-ver span{display:inline-flex;align-items:center;gap:6px}
.hero-ver svg{width:15px;height:15px;color:var(--brand)}
.hero-visual{position:relative;height:640px}
.hero-wave{position:relative;z-index:1;display:block;width:100%;height:90px;margin-top:-30px;color:#fff}

/* 手机样机 */
.device{position:absolute;padding:10px;border-radius:46px;background:#0d1626;box-shadow:inset 0 0 0 2px #2a3446,var(--shadow-lg)}
.device::before{content:"";position:absolute;left:50%;top:18px;z-index:3;width:84px;height:24px;margin-left:-42px;border-radius:14px;background:#0d1626}
.device-screen{position:relative;overflow:hidden;border-radius:37px;aspect-ratio:9/20;background:#111}
.device-screen img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .8s ease}
.device-screen img.on,.device-screen img:only-child{opacity:1}
.device-main{width:290px;left:50%;top:0;margin-left:-145px;z-index:3}
.device-back{width:240px;right:-10px;top:90px;z-index:1;transform:rotate(8deg);opacity:.95}
.device-back .device-screen{border-radius:30px}
.device-back::before{width:70px;height:20px;margin-left:-35px;top:16px}
.chip{position:absolute;z-index:4;display:flex;align-items:center;gap:10px;padding:10px 16px 10px 10px;border-radius:16px;background:rgba(255,255,255,.92);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:var(--shadow);font-size:12px;color:var(--muted);white-space:nowrap;animation:float 6s ease-in-out infinite}
.chip b{display:block;font-size:14px;color:var(--ink);line-height:1.3}
.chip i{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand-d)}
.chip i svg{width:20px;height:20px}
.chip-a{left:-10px;top:150px}
.chip-b{left:20px;bottom:120px;animation-delay:-2s}
.chip-c{right:-6px;bottom:60px;animation-delay:-4s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* ---------- 亮点条 ---------- */
.highlights{position:relative;z-index:2;margin-top:-20px}
.hl-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-radius:22px;background:#fff;box-shadow:var(--shadow);border:1px solid var(--line)}
.hl{display:flex;align-items:center;gap:16px;padding:28px}
.hl+.hl{border-left:1px solid var(--line)}
.hl i{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand-d);flex:none}
.hl i svg{width:26px;height:26px}
.hl b{display:block;font-size:17px;font-weight:700}
.hl span{font-size:13px;color:var(--muted)}

/* ---------- 分区 ---------- */
.sec{padding:110px 0}
.sec-soft{background:var(--soft)}
.sec-hd{max-width:680px;margin:0 auto 60px;text-align:center}
.sec-hd .eyebrow{display:inline-block;margin-bottom:14px;font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--brand-d)}
.sec-hd h2{font-size:clamp(28px,3.4vw,40px);font-weight:800;line-height:1.25;letter-spacing:-.01em}
.sec-hd p{margin-top:14px;font-size:16px;color:var(--muted)}
.sec-hd.left{text-align:left;margin-left:0}

/* 功能展示 */
.showcase{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.showcase+.showcase{margin-top:120px}
.showcase.rev .sc-visual{order:2}
.sc-visual{position:relative;height:600px;border-radius:32px;background:radial-gradient(70% 60% at 50% 55%,rgba(0,200,200,.18),transparent 70%),linear-gradient(160deg,#f0fbfc,#e8f3f8);overflow:hidden}
.sec-soft .sc-visual{background:radial-gradient(70% 60% at 50% 55%,rgba(0,200,200,.18),transparent 70%),#fff}
.sc-visual .device{width:270px;left:50%;top:56px;margin-left:-135px}
.sc-visual::after{content:"";position:absolute;left:0;right:0;bottom:0;height:120px;background:linear-gradient(transparent,rgba(232,243,248,.95));z-index:4}
.sec-soft .sc-visual::after{background:linear-gradient(transparent,#fff)}
.sc-no{display:flex;align-items:center;gap:12px;font-size:13px;font-weight:700;color:var(--brand-d);letter-spacing:.1em}
.sc-no::before{content:attr(data-no);display:grid;place-items:center;width:36px;height:36px;border-radius:12px;background:var(--grad);color:#fff;font-size:14px;letter-spacing:0}
.sc-copy h3{margin-top:18px;font-size:clamp(26px,3vw,36px);font-weight:800;line-height:1.3}
.sc-copy>p{margin-top:16px;font-size:16px;color:var(--muted);max-width:460px}
.sc-points{display:grid;gap:14px;margin-top:30px}
.sc-points li{display:flex;gap:14px;align-items:flex-start}
.sc-points li i{width:28px;height:28px;margin-top:1px;border-radius:9px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand-d);flex:none}
.sc-points li i svg{width:16px;height:16px}
.sc-points b{display:block;font-size:15px}
.sc-points span{font-size:14px;color:var(--muted)}

/* 体验宫格 */
.exp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.exp{padding:32px 28px;border-radius:20px;background:#fff;border:1px solid var(--line);transition:transform .2s,box-shadow .2s,border-color .2s}
.exp:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.exp i{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:var(--grad);color:#fff;box-shadow:0 10px 22px -10px rgba(0,180,192,.7)}
.exp i svg{width:24px;height:24px}
.exp h3{margin-top:22px;font-size:18px;font-weight:700}
.exp p{margin-top:8px;font-size:14px;color:var(--muted)}

/* 全平台 */
.plat-band{position:relative;overflow:hidden;padding:96px 0;background:linear-gradient(135deg,#06303a 0%,#0a4a5a 45%,#0b5f7e 100%);color:#fff}
.plat-band::before{content:"";position:absolute;right:-200px;top:-200px;width:700px;height:700px;border-radius:50%;background:radial-gradient(circle,rgba(59,227,211,.35),transparent 62%)}
.plat-band::after{content:"";position:absolute;inset:auto 0 0;height:160px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 160' preserveAspectRatio='none'%3E%3Cpath fill='%23ffffff' fill-opacity='.05' d='M0 80q180-50 360 0t360 0 360 0 360 0v80H0z'/%3E%3Cpath fill='%23ffffff' fill-opacity='.05' d='M0 110q180-40 360 0t360 0 360 0 360 0v50H0z'/%3E%3C/svg%3E") center/100% 100% no-repeat}
.plat-band .container{position:relative;z-index:1}
.plat-band .sec-hd .eyebrow{color:#7ff0e6}
.plat-band .sec-hd p{color:rgba(255,255,255,.7)}
.plat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.plat{display:flex;flex-direction:column;padding:32px;border-radius:22px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:background .2s,transform .2s}
.plat:hover{background:rgba(255,255,255,.13);transform:translateY(-4px)}
.plat-ic{width:56px;height:56px;border-radius:16px;display:grid;place-items:center;background:#fff;color:var(--ink)}
.plat-ic svg{width:28px;height:28px}
.plat h3{margin-top:22px;font-size:20px}
.plat p{margin:8px 0 26px;flex:1;font-size:14px;color:rgba(255,255,255,.72)}
.plat .btn{align-self:flex-start}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:360px minmax(0,1fr);gap:64px;align-items:start}
.faq-layout .sec-hd{margin:0;text-align:left;position:sticky;top:calc(var(--hh) + 32px)}
.faq-layout .sec-hd .btn{margin-top:26px}
.acc{display:grid;gap:12px}
.acc details{border-radius:16px;background:#fff;border:1px solid var(--line);transition:box-shadow .2s,border-color .2s}
.sec-soft .acc details{border-color:transparent}
.acc details[open]{box-shadow:var(--shadow);border-color:transparent}
.acc summary{position:relative;list-style:none;cursor:pointer;padding:20px 60px 20px 24px;font-size:16px;font-weight:650}
.acc summary::-webkit-details-marker{display:none}
.acc summary::after{content:"";position:absolute;right:24px;top:50%;width:22px;height:22px;margin-top:-11px;border-radius:50%;background:var(--soft2) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2.5' stroke-linecap='round'%3E%3Cpath d='M12 6v12M6 12h12'/%3E%3C/svg%3E") center/12px no-repeat;transition:transform .2s,background-color .2s}
.acc details[open] summary::after{transform:rotate(45deg);background-color:var(--brand-soft)}
.acc details>div{padding:0 24px 22px;color:var(--muted);font-size:15px}
.acc details>div p+p{margin-top:8px}
.acc a{color:var(--brand-d);font-weight:600}
.acc ol{list-style:decimal;padding-left:20px}
.acc ol li{margin:4px 0}

/* 底部 CTA */
.cta{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:48px;align-items:center;padding:56px 64px;border-radius:28px;background:var(--grad);color:#fff;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;right:-120px;bottom:-200px;width:520px;height:520px;border-radius:50%;background:rgba(255,255,255,.12)}
.cta>*{position:relative}
.cta h2{font-size:clamp(26px,3vw,36px);font-weight:800;line-height:1.3}
.cta p{margin-top:10px;color:rgba(255,255,255,.85);font-size:16px}
.cta-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.cta-qr{padding:14px;border-radius:20px;background:#fff;text-align:center;color:var(--ink)}
.cta-qr canvas{width:140px;height:140px}
.cta-qr span{display:block;margin-top:6px;font-size:12px;color:var(--muted)}

/* ---------- 页脚 ---------- */
.ft{background:var(--dark);color:#94a3b8;font-size:14px}
.ft-top{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:40px;padding:64px 0 48px}
.ft .logo b{color:#fff}
.ft-about p{margin-top:16px;max-width:320px;line-height:1.8}
.ft h4{margin-bottom:16px;color:#fff;font-size:15px;font-weight:700}
.ft li+li{margin-top:10px}
.ft li a:hover{color:#fff}
.ft-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding:24px 0 32px;border-top:1px solid rgba(255,255,255,.08);font-size:13px;color:#64748b}
.ft-seo{padding-bottom:28px;font-size:12px;line-height:1.9;color:#4b5a70}

/* ---------- 下载页 / 平台页 首屏 ---------- */
.dl-hero,.g-hero{position:relative;overflow:hidden;padding:calc(var(--hh) + 36px) 0 96px;background:linear-gradient(180deg,#eefbfc 0%,#f6fbfd 62%,#fff 100%)}
.dl-hero::before,.g-hero::before{content:"";position:absolute;right:-10%;top:-34%;width:860px;height:860px;border-radius:50%;background:radial-gradient(circle,rgba(0,200,200,.2),rgba(0,200,200,0) 62%);pointer-events:none}
.dl-hero::after,.g-hero::after{content:"";position:absolute;left:-16%;top:24%;width:620px;height:620px;border-radius:50%;background:radial-gradient(circle,rgba(10,155,196,.11),rgba(10,155,196,0) 65%);pointer-events:none}
.dl-hero .container,.g-hero .container{position:relative;z-index:1}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--faint)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand-d)}
.crumb svg{width:12px;height:12px}
.dl-grid{display:grid;grid-template-columns:minmax(0,1fr) 440px;gap:56px;align-items:center;margin-top:30px}
.dl-grid>*{min-width:0}
.app-id{display:flex;align-items:center;gap:20px}
.app-id img{width:92px;height:92px;border-radius:24px;flex:none;box-shadow:0 18px 40px -12px rgba(0,150,170,.55)}
.app-id .kick{display:block;font-size:14px;font-weight:700;color:var(--brand-d);letter-spacing:.04em}
.app-id h1{margin-top:2px;font-size:clamp(28px,3.6vw,42px);font-weight:900;line-height:1.2;letter-spacing:-.01em}
.app-id p{margin-top:6px;color:var(--muted);font-size:15px}
.badges{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:18px}
.badges span{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--ink2)}
.badges svg{width:16px;height:16px;color:var(--brand)}
.pick-row{display:flex;align-items:center;justify-content:space-between;gap:12px;max-width:620px;margin-top:36px}
.pick-row>b{font-size:15px;font-weight:700}
.detected{display:inline-flex;align-items:center;gap:7px;height:28px;padding:0 12px;border-radius:999px;background:rgba(34,197,94,.1);color:#15803d;font-size:12px;font-weight:600;white-space:nowrap}
.detected i{width:7px;height:7px;border-radius:50%;background:#22c55e}
.os-switch{display:flex;gap:4px;max-width:620px;margin-top:12px;padding:5px;border-radius:16px;background:rgba(15,27,45,.055)}
.os-switch button{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 12px;border-radius:12px;font-size:15px;font-weight:650;color:var(--muted);transition:background .2s,color .2s,box-shadow .2s}
.os-switch button svg{width:19px;height:19px}
.os-switch button:hover{color:var(--ink)}
.os-switch button[aria-selected="true"]{background:#fff;color:var(--ink);box-shadow:0 2px 10px rgba(15,27,45,.1)}
.dl-card{display:flex;gap:22px;align-items:stretch;max-width:620px;margin-top:16px;padding:24px;border-radius:24px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
.dl-main{flex:1;min-width:0}
.os-panel{display:none;height:100%;flex-direction:column}
.os-panel.is-on,.dl-main>.os-panel:only-child{display:flex;animation:paneIn .35s ease}
.os-panel h2{font-size:19px;font-weight:800}
.req{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:8px;font-size:13px;color:var(--muted)}
.req span{display:inline-flex;align-items:center;gap:5px}
.req svg{width:14px;height:14px;color:var(--brand)}
.dl-btns{display:flex;flex-wrap:wrap;gap:10px;margin-top:auto;padding-top:20px}
.big-btn{display:inline-flex;align-items:center;gap:12px;height:60px;padding:0 28px 0 20px;border-radius:16px;background:var(--brand);color:#fff;box-shadow:0 12px 26px -10px rgba(0,180,192,.75);transition:background .18s,transform .18s}
.big-btn:hover{background:var(--brand-d);transform:translateY(-1px)}
.big-btn svg{width:26px;height:26px}
.big-btn>span{display:flex;flex-direction:column;line-height:1.25}
.big-btn b{font-size:17px;font-weight:700}
.big-btn small{font-size:12px;opacity:.85}
.btn-xl{height:60px;padding:0 24px;border-radius:16px;font-size:15px}
.dl-qr{flex:none;width:150px;padding:12px 12px 10px;border-radius:18px;background:var(--soft);text-align:center}
.dl-qr canvas{width:126px;height:126px;border-radius:10px;margin:0 auto}
.dl-qr b{display:block;margin-top:6px;font-size:13px}
.dl-qr span{display:block;font-size:11px;color:var(--faint)}
.dl-foot{display:flex;flex-wrap:wrap;align-items:center;gap:6px 18px;margin-top:16px;font-size:13px;color:var(--muted)}
.dl-foot a{display:inline-flex;align-items:center;gap:5px;color:var(--ink2)}
.dl-foot a:hover{color:var(--brand-d)}
.dl-foot svg{width:15px;height:15px;color:var(--brand)}
.dl-tip{display:flex;gap:10px;max-width:620px;margin-top:16px;padding:13px 16px;border-radius:14px;background:#fff8eb;color:#8a5a00;font-size:14px}
.dl-tip svg{width:18px;height:18px;margin-top:2px}
.dl-tip.info{background:#fff;color:var(--ink2);box-shadow:var(--shadow-sm)}
.dl-tip.info svg{color:var(--brand)}
.dl-tip a{color:var(--brand-d);font-weight:600}

.dl-visual{position:relative;height:600px}
.dl-visual::before{content:"";position:absolute;left:50%;top:50%;width:460px;height:460px;margin:-230px 0 0 -230px;border-radius:50%;background:var(--grad);opacity:.13}
.dl-visual .device-main{width:272px;margin-left:-136px;top:6px}
.fc{position:absolute;z-index:4;padding:14px 16px;border-radius:18px;background:rgba(255,255,255,.95);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:var(--shadow);animation:float 6s ease-in-out infinite}
.fc b{display:block;font-size:13px;line-height:1.35}
.fc small{font-size:11px;color:var(--muted)}
.fc-dl{left:-24px;bottom:110px;width:236px}
.fc-dl .row{display:flex;align-items:center;gap:10px}
.fc-dl img{width:38px;height:38px;border-radius:10px}
.fc-dl .bar{height:6px;margin-top:12px;border-radius:6px;background:var(--soft2);overflow:hidden}
.fc-dl .bar i{display:block;height:100%;border-radius:inherit;background:var(--grad);animation:load 3.6s ease-in-out infinite}
@keyframes load{0%{width:6%}75%,100%{width:100%}}
.fc-ok{right:-14px;top:110px;display:flex;align-items:center;gap:10px;animation-delay:-3s}
.fc-ok i{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:#dcfce7;color:#16a34a}
.fc-ok i svg{width:20px;height:20px}
.fc-ver{right:6px;bottom:40px;display:flex;align-items:center;gap:10px;animation-delay:-1.5s}
.fc-ver i{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand-d)}
.fc-ver i svg{width:20px;height:20px}

/* 应用信息条 */
.appinfo{position:relative;z-index:2;display:grid;grid-template-columns:repeat(6,1fr);margin-top:-44px;padding:24px 0;border-radius:22px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
.appinfo>div{padding:0 12px;text-align:center}
.appinfo>div+div{border-left:1px solid var(--line)}
.appinfo small{display:block;font-size:12px;color:var(--faint);letter-spacing:.06em}
.appinfo b{display:block;margin:4px 0 2px;font-size:22px;font-weight:800;line-height:1.3;white-space:nowrap}
.appinfo span{font-size:12px;color:var(--muted)}

/* 截图画廊 */
.gallery{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:22px}
.gallery figure{text-align:center}
.gallery .pic{aspect-ratio:9/20;border-radius:26px;overflow:hidden;background:#e9eef3;border:1px solid var(--line);box-shadow:0 24px 48px -22px rgba(8,48,72,.4);transition:transform .25s}
.gallery .pic img{width:100%;height:100%;object-fit:cover}
.gallery figure:hover .pic{transform:translateY(-6px)}
.gallery figcaption{margin-top:16px;font-size:15px;font-weight:700}
.gallery figcaption span{display:block;font-size:13px;font-weight:400;color:var(--muted)}

/* 新版功能 / 校验 / 权限 */
.cards3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px;align-items:start}
.card{padding:28px;border-radius:24px;background:#fff;border:1px solid var(--line)}
.sec-soft .card{border-color:transparent;box-shadow:var(--shadow-sm)}
.card-hd{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.card-hd i{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:var(--grad);color:#fff;flex:none;box-shadow:0 10px 20px -10px rgba(0,180,192,.8)}
.card-hd i svg{width:20px;height:20px}
.card-hd h3{font-size:18px;font-weight:800;line-height:1.3}
.card-hd small{display:block;font-size:12px;color:var(--muted)}
.news{display:grid;gap:12px}
.news li{display:flex;gap:10px;font-size:14px;color:var(--ink2)}
.news li::before{content:"";flex:none;width:20px;height:20px;margin-top:1px;border-radius:50%;background:var(--brand-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2300909c' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center/11px no-repeat}
.hash-list{display:grid;gap:12px}
.hash-row{padding:14px 16px;border-radius:14px;background:var(--soft)}
.hash-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:6px}
.hash-top b{font-size:12px;color:var(--muted);font-weight:700;letter-spacing:.06em}
.hash-row code{display:block;font:12px/1.6 ui-monospace,SFMono-Regular,Consolas,monospace;word-break:break-all;color:var(--ink)}
.hash-row button{height:28px;padding:0 12px;border-radius:8px;background:#fff;border:1px solid var(--line);font-size:12px;font-weight:600;transition:.15s}
.hash-row button:hover{border-color:var(--brand);color:var(--brand-d)}
.hash-row button.ok{color:#16a34a;border-color:#bbf7d0}
.tip{display:flex;gap:10px;margin-top:16px;padding:13px 15px;border-radius:14px;background:#fff8eb;color:#8a5a00;font-size:13px;line-height:1.65}
.tip svg{width:17px;height:17px;margin-top:2px}
.tip.info{background:var(--brand-soft);color:#05606a}
.tip a{color:inherit;font-weight:700;text-decoration:underline}
.perm{display:grid;gap:8px}
.perm li{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:14px;background:var(--soft)}
.perm li i{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:#fff;color:var(--brand-d);flex:none}
.perm li i svg{width:17px;height:17px}
.perm li div{flex:1;min-width:0}
.perm li b{display:block;font-size:14px}
.perm li span{font-size:12px;color:var(--muted)}
.perm li em{flex:none;padding:3px 9px;border-radius:999px;background:#dcfce7;color:#15803d;font-size:11px;font-style:normal;font-weight:700}
.perm li.opt em{background:var(--brand-soft);color:var(--brand-d)}
.perm li.no em{background:#eef2f6;color:var(--muted)}

/* 求助横幅 */
.help{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:32px;padding:44px 52px;border-radius:28px;overflow:hidden;background:linear-gradient(135deg,#0a3440 0%,#0b5068 55%,#0b6a8a 100%);color:#fff}
.help::before{content:"";position:absolute;right:-60px;top:-160px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(59,227,211,.42),transparent 65%)}
.help>*{position:relative}
.help h2{font-size:clamp(22px,2.6vw,28px);font-weight:800;line-height:1.35}
.help p{margin-top:8px;color:rgba(255,255,255,.75)}
.help-btns{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- 安装教程 ---------- */
.g-hero{padding-bottom:72px;text-align:center}
.g-hero .crumb{justify-content:center}
.g-hero .eyebrow{display:inline-block;margin-top:26px;font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--brand-d)}
.g-hero h1{margin-top:10px;font-size:clamp(30px,4.2vw,48px);font-weight:900;line-height:1.2}
.g-hero .sub{max-width:620px;margin:14px auto 0;font-size:16px;color:var(--muted)}
.picker{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:980px;margin:44px auto 0}
.pick{position:relative;display:flex;align-items:center;gap:16px;padding:22px 24px;border-radius:22px;background:#fff;border:2px solid transparent;box-shadow:var(--shadow-sm);text-align:left;transition:transform .2s,box-shadow .2s,border-color .2s}
.pick:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.pick-ic{width:56px;height:56px;border-radius:16px;display:grid;place-items:center;background:var(--soft);color:var(--ink);flex:none;transition:background .2s,color .2s}
.pick-ic svg{width:28px;height:28px}
.pick b{display:block;font-size:17px;font-weight:800}
.pick small{display:block;margin-top:2px;font-size:13px;color:var(--muted)}
.pick::after{content:"";position:absolute;right:14px;top:14px;width:22px;height:22px;border-radius:50%;background:var(--brand) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center/12px no-repeat;opacity:0;transform:scale(.5);transition:.2s}
.pick[aria-selected="true"]{border-color:var(--brand);box-shadow:0 0 0 4px rgba(0,180,192,.12),var(--shadow)}
.pick[aria-selected="true"] .pick-ic{background:var(--grad);color:#fff}
.pick[aria-selected="true"]::after{opacity:1;transform:none}
.pane{display:none}
.pane.is-on{display:block;animation:paneIn .35s ease}
@keyframes paneIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.prep{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-bottom:56px;padding:18px 18px 18px 26px;border-radius:20px;background:var(--soft)}
.prep-l{display:flex;flex-wrap:wrap;align-items:center;gap:8px 22px;font-size:14px;color:var(--ink2)}
.prep-l>b{font-size:16px;color:var(--ink)}
.prep-l span{display:inline-flex;align-items:center;gap:6px}
.prep-l svg{width:16px;height:16px;color:var(--brand)}

/* 步骤播放器：左侧固定手机，右侧步骤列表 */
.tut{display:grid;grid-template-columns:380px minmax(0,1fr);gap:72px;align-items:start}
.tut-stage{position:sticky;top:calc(var(--hh) + 28px)}
.tut-device{position:relative;padding:12px 0}
.tut-device::before{content:"";position:absolute;left:50%;top:50%;width:380px;height:380px;margin:-190px 0 0 -190px;border-radius:50%;background:var(--grad);opacity:.13}
.tut-device .handset{position:relative}
.screens{position:relative;height:500px;border-radius:32px;overflow:hidden;background:#f2f2f7;touch-action:pan-y}
.screens .hs-screen{position:absolute;inset:0;height:auto;border-radius:0;opacity:0;transform:scale(.97);transition:opacity .4s ease,transform .4s ease;pointer-events:none}
.screens .hs-screen.on{opacity:1;transform:none}
.tut-ctrl{display:flex;align-items:center;justify-content:center;gap:18px;margin-top:22px}
.tut-ctrl button{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);transition:border-color .15s,color .15s,opacity .15s}
.tut-ctrl button svg{width:18px;height:18px}
.tut-ctrl button:hover:not(:disabled){border-color:var(--brand);color:var(--brand-d)}
.tut-ctrl button:disabled{opacity:.35;cursor:default}
.tut-ctrl button[data-prev] svg{transform:rotate(180deg)}
.tut-dots{display:flex;gap:6px}
.tut-dots i{width:8px;height:8px;border-radius:999px;background:#d5dde6;transition:width .25s,background .25s}
.tut-dots i.on{width:26px;background:var(--brand)}
.tut-list{position:relative;display:grid;gap:12px}
.tut-list::before{content:"";position:absolute;left:44px;top:44px;bottom:44px;width:2px;background:var(--line)}
.ts{position:relative;display:grid;grid-template-columns:46px minmax(0,1fr);gap:20px;padding:24px 28px 24px 22px;border-radius:22px;border:1px solid transparent;cursor:pointer;transition:background .25s,box-shadow .25s,border-color .25s}
.ts:hover{background:var(--soft)}
.ts.on{background:#fff;border-color:var(--line);box-shadow:var(--shadow);cursor:default}
.ts-no{position:relative;z-index:1;width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:#fff;border:2px solid var(--line);font-size:17px;font-weight:800;color:var(--faint);transition:.25s}
.ts.done .ts-no{border-color:#9fe3e7;color:var(--brand-d)}
.ts.on .ts-no{background:var(--grad);border-color:transparent;color:#fff;box-shadow:0 10px 22px -10px rgba(0,180,192,.85)}
.ts small{display:block;padding-top:2px;font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--faint)}
.ts.on small{color:var(--brand-d)}
.ts h3{font-size:19px;font-weight:800;line-height:1.4;color:var(--ink2)}
.ts.on h3{color:var(--ink)}
.ts ol{display:grid;gap:8px;margin-top:12px}
.ts ol li{position:relative;padding-left:16px;font-size:15px;color:var(--muted)}
.ts ol li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:#c7d2dd}
.ts.on ol li{color:var(--ink2)}
.ts.on ol li::before{background:var(--brand)}
.ts ol li b{color:var(--ink)}
.done-card{display:flex;align-items:center;gap:20px;margin-top:48px;padding:26px 32px;border-radius:24px;background:var(--grad);color:#fff}
.done-card i{width:56px;height:56px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.2);flex:none}
.done-card i svg{width:28px;height:28px}
.done-card div{flex:1;min-width:0}
.done-card b{display:block;font-size:19px}
.done-card span{font-size:14px;color:rgba(255,255,255,.88)}
.done-card .btn{flex:none}

/* 排查问答 */
.qa-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.qa{padding:24px 26px;border-radius:20px;background:#fff;border:1px solid var(--line)}
.sec-soft .qa{border-color:transparent;box-shadow:var(--shadow-sm)}
.qa h4{display:flex;gap:12px;font-size:16px;font-weight:750;line-height:1.5}
.qa h4::before{content:"Q";flex:none;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;background:#fff1dc;color:#e48a00;font-size:13px;font-weight:800}
.qa>div{margin-top:10px;padding-left:38px;font-size:14px;color:var(--muted)}
.qa>div p+p{margin-top:6px}
.qa a{color:var(--brand-d);font-weight:600}

/* 教程手机模型 */
.handset{width:256px;margin:0 auto;position:relative;padding:11px;border-radius:42px;background:#0d1626;box-shadow:inset 0 0 0 2px #2a3446,0 30px 60px -20px rgba(8,48,72,.4)}
.hs-screen{position:relative;height:500px;border-radius:32px;overflow:hidden;background:#f2f2f7;color:#111;font-size:11px;line-height:1.35}
.hs-screen *{box-sizing:border-box}
.hs-island{position:absolute;left:50%;top:8px;z-index:6;width:76px;height:22px;margin-left:-38px;background:#000;border-radius:14px}
.hs-status{display:flex;justify-content:space-between;align-items:center;padding:9px 18px 0 22px;height:34px;font-size:11px;font-weight:700;position:relative;z-index:4}
.hs-home{position:absolute;left:50%;bottom:7px;z-index:6;width:96px;height:4px;margin-left:-48px;border-radius:4px;background:#000;opacity:.28;pointer-events:none}
.wall{background:linear-gradient(165deg,#3be3d3 0%,#0a9bc4 45%,#0b2a4a 100%)}
.wall .hs-status{color:#fff}
.wall .hs-home{background:#fff;opacity:.6}
.hit{position:relative;z-index:2}
.hit::after{content:"";position:absolute;width:16px;height:16px;right:8px;top:50%;margin-top:-8px;border-radius:50%;background:#ff3b30;animation:hit 1.5s ease-out infinite;pointer-events:none;z-index:3}
.hit-icon::after{right:50%;top:22%;margin:0 -8px 0 0}
.hit-ring{box-shadow:inset 0 0 0 2px #ff3b30!important}
@keyframes hit{0%{box-shadow:0 0 0 0 rgba(255,59,48,.5)}70%{box-shadow:0 0 0 12px rgba(255,59,48,0)}100%{box-shadow:0 0 0 0 rgba(255,59,48,0)}}
.wx{background:#ededed}
.wx-hd{padding:38px 12px 10px;text-align:center;font-weight:700;font-size:13px;border-bottom:1px solid #d9d9d9}
.wx-bubble{margin:18px 12px;max-width:80%;padding:10px 12px;background:#fff;border-radius:8px;line-height:1.5}
.wx-acts{position:absolute;left:8px;right:8px;bottom:22px}
.wx-acts span{display:block;width:100%;padding:13px;background:#fff;text-align:center;font-weight:700;font-size:13px}
.wx-acts .cell{border-radius:12px 12px 0 0;color:#007aff}
.wx-acts .cell+.cell{border-top:1px solid #eee;border-radius:0;color:#111;font-weight:600}
.wx-acts .cancel{margin-top:8px;border-radius:12px}
.sf-url{display:flex;align-items:center;justify-content:space-between;margin:4px 10px 10px;padding:7px 10px;border-radius:10px;background:#e3e3e8;font-size:10px;color:#333}
.mini{padding:0 12px}
.mini-row{display:flex;align-items:center;gap:8px;margin:8px 0}
.mini-row img{width:30px;height:30px;border-radius:8px}
.mini .go{display:block;margin-top:10px;height:36px;line-height:36px;text-align:center;border-radius:10px;background:var(--brand);color:#fff;font-weight:800}
.ios-alert{position:absolute;left:18px;right:18px;top:150px;z-index:4;background:rgba(255,255,255,.96);border-radius:14px;text-align:center;box-shadow:0 20px 50px rgba(0,0,0,.25)}
.ios-alert b{display:block;padding:16px 12px 6px;font-size:13px}
.ios-alert p{padding:0 12px 12px;color:#666}
.ios-alert .row{display:flex;border-top:1px solid #e5e5ea}
.ios-alert .row span{flex:1;padding:11px 0;font-weight:600;color:#007aff}
.ios-alert .row span+span{border-left:1px solid #e5e5ea;font-weight:800}
.dim-bg::before{content:"";position:absolute;inset:0;background:rgba(0,0,0,.25);z-index:3}
.set-title{padding:8px 16px 10px;font-size:26px;font-weight:800;letter-spacing:-.03em}
.set-banner{display:flex;align-items:center;gap:10px;margin:0 12px 10px;padding:12px;background:#fff;border-radius:12px}
.set-banner img{width:32px;height:32px;border-radius:8px}
.set-banner b{display:block;font-size:13px}
.set-banner small{color:#8e8e93;font-size:10px}
.chev{margin-left:auto;color:#c7c7cc}
.set-group{margin:0 12px 10px;background:#fff;border-radius:12px;overflow:hidden}
.set-row{display:flex;align-items:center;gap:8px;padding:11px 12px;border-bottom:1px solid #f2f2f7;font-size:12px}
.set-row:last-child{border-bottom:0}
.set-row img{width:28px;height:28px;border-radius:7px}
.set-nav{display:flex;justify-content:space-between;padding:6px 14px;font-size:12px;color:#007aff}
.set-nav b{color:#111}
.prof{margin:6px 12px 10px;padding:16px;background:#fff;border-radius:12px;text-align:center}
.prof img{width:52px;height:52px;border-radius:12px;margin:0 auto 8px}
.prof b{display:block;font-size:14px}
.prof .dim{margin-top:2px}
.pass p{text-align:center;padding:30px 20px 0;color:#444;line-height:1.5}
.pass .dots{display:flex;justify-content:center;gap:12px;margin:18px 0 16px}
.pass .dots i{width:11px;height:11px;border-radius:50%;border:1.5px solid #111;display:block}
.pass .dots i.f{background:#111}
.pad{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding:8px 30px}
.pad span{height:48px;display:grid;place-items:center;border-radius:50%;background:#e5e5ea;font-weight:700;font-size:18px}
.apps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px 6px;padding:48px 12px 0}
.apps span{display:flex;flex-direction:column;align-items:center;gap:5px;color:#fff;font-size:9px;text-align:center}
.apps i,.apps img{width:42px;height:42px;border-radius:11px}
.apps i{display:grid;place-items:center;background:rgba(255,255,255,.92);color:#555;font-style:normal;font-weight:700}
.dock{position:absolute;left:10px;right:10px;bottom:20px;display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:10px 8px;border-radius:22px;background:rgba(255,255,255,.28)}
.dock i{width:42px;height:42px;border-radius:11px;margin:0 auto;display:grid;place-items:center;background:#fff;font-style:normal;font-weight:700;color:#333;font-size:10px}
.and{background:#f4f5f7}
.and-hd{padding:4px 14px 8px;font-size:16px;font-weight:800}
.and-card{margin:10px 10px 0;padding:14px;border-radius:16px;background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.05)}
.and-card .row{display:flex;align-items:center;gap:8px}
.and-card img{width:30px;height:30px;border-radius:8px}
.and-go{display:block;margin-top:12px;height:36px;line-height:36px;text-align:center;border-radius:10px;background:var(--brand);color:#fff;font-weight:800}
.sw{width:36px;height:20px;border-radius:999px;background:#34c759;margin-left:auto;position:relative;flex:none}
.sw::after{content:"";position:absolute;top:2px;right:2px;width:16px;height:16px;border-radius:50%;background:#fff;box-shadow:0 1px 2px rgba(0,0,0,.2)}
.sw.off{background:#d1d5db}
.sw.off::after{right:auto;left:2px}
.and-dlg{position:absolute;left:10px;right:10px;bottom:22px;z-index:4;padding:18px 16px 12px;border-radius:20px;background:#fff;text-align:center;box-shadow:0 -10px 40px rgba(0,0,0,.12)}
.and-dlg img{width:44px;height:44px;border-radius:11px;margin:0 auto 8px}
.and-dlg b{display:block;margin-bottom:4px;font-size:13px}
.and-dlg .dlg-acts{display:flex;gap:8px;margin-top:14px}
.and-dlg .dlg-acts span{flex:1;height:36px;line-height:36px;border-radius:10px;background:#f2f2f7;font-weight:700}
.and-dlg .dlg-acts .ok{background:var(--brand);color:#fff}
.prog{height:5px;border-radius:5px;background:#e5e7eb;margin-top:10px;overflow:hidden}
.prog i{display:block;height:100%;width:100%;background:var(--brand)}
.hw-sheet{position:absolute;left:0;right:0;bottom:0;z-index:4;padding:14px 8px 24px;background:#fff;border-radius:20px 20px 0 0;box-shadow:0 -10px 40px rgba(0,0,0,.12)}
.hw-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px 4px;text-align:center;font-size:10px;color:#333}
.hw-grid i{display:grid;place-items:center;width:40px;height:40px;margin:0 auto 4px;border-radius:12px;background:#f3f4f6;font-style:normal;font-size:14px}
.hw-grid .on i{background:var(--brand-soft);color:var(--brand-d);font-weight:800}
.page-mock{padding:0 12px}
.page-mock .bar{height:70px;border-radius:12px;background:linear-gradient(135deg,#9ff3ea,#7dd3fc);margin-bottom:8px}
.page-mock .ln{height:8px;border-radius:4px;background:#e2e8f0;margin:8px 0}
.page-mock .ln.s{width:60%}
.dim{color:#8e8e93;font-size:10px}

/* ---------- 移动端底部条 / 微信引导 ---------- */
.mbar{display:none;position:fixed;left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));z-index:40;align-items:center;gap:12px;padding:10px 10px 10px 12px;border-radius:18px;background:rgba(255,255,255,.96);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 12px 36px rgba(15,27,45,.18);border:1px solid var(--line);transform:translateY(140%);transition:transform .3s}
.mbar.is-on{transform:none}
.mbar img{width:42px;height:42px;border-radius:11px}
.mbar div{flex:1;min-width:0}
.mbar b{display:block;font-size:15px}
.mbar small{display:block;font-size:12px;color:var(--muted)}
.mbar .btn{height:40px;padding:0 20px}
.wx-guide{position:fixed;inset:0;z-index:90;background:rgba(5,12,22,.88);color:#fff;padding:28px 24px}
.wx-guide .arrow{position:absolute;top:8px;right:18px;width:84px;height:84px}
.wx-guide h2{margin:118px 0 18px;font-size:24px;line-height:1.45}
.wx-guide ol{list-style:decimal;padding-left:20px;color:#cbd5e1;line-height:2}
.wx-guide button{margin-top:28px;height:46px;padding:0 28px;border-radius:12px;background:var(--brand);color:#fff;font-weight:700}

/* 出现动画 */
.rv{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.rv.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1140px){
  .hero .container{grid-template-columns:minmax(0,1fr) 440px}
  .hero-visual{height:580px}
  .device-main{width:260px;margin-left:-130px}
  .device-back{width:210px;right:-20px}
  .chip-a{left:-30px}
  .showcase{gap:48px}
  .ft-top{grid-template-columns:1.2fr repeat(3,1fr)}
  .dl-grid{grid-template-columns:minmax(0,1fr) 380px;gap:32px}
  .dl-visual{height:540px}
  .dl-visual .device-main{width:240px;margin-left:-120px}
  .fc-dl{left:-30px}
  .fc-ok{right:-20px}
  .tut{grid-template-columns:330px minmax(0,1fr);gap:44px}
}
@media (max-width:960px){
  :root{--hh:60px}
  .hd-nav,.hd-act{display:none}
  .menu-btn{display:grid}
  .hd.open{background:#fff;border-bottom-color:var(--line)}
  .hd.open .hd-nav{display:flex;position:absolute;left:0;right:0;top:var(--hh);height:auto;flex-direction:column;align-items:stretch;padding:8px 16px 20px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 20px 30px rgba(15,27,45,.08)}
  .hd.open .hd-nav a{height:52px;padding:0 8px;font-size:16px;border-bottom:1px solid var(--soft2)}
  .hd.open .hd-nav a[aria-current="page"]::after{display:none}
  .hd.open .hd-nav a[aria-current="page"]{color:var(--brand-d)}
  .hero{padding-top:calc(var(--hh) + 36px)}
  .hero .container{grid-template-columns:1fr;text-align:center}
  .hero-brand{justify-content:center}
  .hero-desc{margin-left:auto;margin-right:auto}
  .dlp{flex-direction:column;max-width:440px;margin-left:auto;margin-right:auto;padding:20px;text-align:center}
  .dlp-main{width:100%}
  .dlp-btns{grid-template-columns:1fr 1fr}
  .os-btn.is-main{grid-column:1/-1;height:54px;font-size:16px}
  .os-btn.is-main em{display:inline}
  .hero-ver{justify-content:center}
  .hero-visual{height:520px;max-width:480px;width:100%;margin:0 auto}
  .device-main{width:236px;margin-left:-118px}
  .device-back{width:190px;right:10px;top:70px}
  .chip-a{left:0}
  .hl-grid{grid-template-columns:1fr 1fr}
  .hl:nth-child(3){border-left:0}
  .hl:nth-child(n+3){border-top:1px solid var(--line)}
  .sec{padding:80px 0}
  .showcase,.showcase.rev{grid-template-columns:1fr;gap:36px}
  .showcase.rev .sc-visual{order:0}
  .showcase+.showcase{margin-top:80px}
  .sc-visual{height:520px}
  .exp-grid{grid-template-columns:1fr 1fr}
  .plat-row{grid-template-columns:1fr}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-layout .sec-hd{position:static;text-align:center;margin:0 auto}
  .cta{grid-template-columns:1fr;text-align:center;padding:48px 28px}
  .cta-btns{justify-content:center}
  .cta-qr{display:none}
  .ft-top{grid-template-columns:repeat(3,1fr);gap:32px 24px}
  .ft-about{grid-column:1/-1}
  .ft-about p{max-width:none}
  .mbar{display:flex}
  body.has-mbar{padding-bottom:88px}

  .dl-hero{padding:calc(var(--hh) + 22px) 0 72px}
  .dl-grid{grid-template-columns:1fr;margin-top:22px}
  .dl-visual{display:none}
  .dl-hero .crumb{justify-content:center}
  .dl-grid>div:first-child{text-align:center}
  .app-id{flex-direction:column;gap:14px}
  .app-id img{width:76px;height:76px;border-radius:20px}
  .badges{justify-content:center}
  .pick-row,.os-switch,.dl-card,.dl-tip{margin-left:auto;margin-right:auto}
  .dl-card,.dl-tip{text-align:left}
  .os-switch button{padding:0 6px}
  .dl-foot{justify-content:center}
  .appinfo{grid-template-columns:repeat(3,1fr);row-gap:18px;margin-top:-36px}
  .appinfo>div:nth-child(4){border-left:0}
  .gallery{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:14px;margin:0 -24px;padding:6px 24px 24px;scrollbar-width:none}
  .gallery::-webkit-scrollbar{display:none}
  .gallery figure{flex:0 0 42%;scroll-snap-align:start}
  .cards3{grid-template-columns:1fr}
  .help{grid-template-columns:1fr;text-align:center;padding:36px 24px}
  .help-btns{justify-content:center}
  .g-hero{padding:calc(var(--hh) + 22px) 0 56px}
  .picker{gap:10px;margin-top:32px}
  .pick{flex-direction:column;justify-content:center;gap:10px;padding:18px 8px;text-align:center}
  .pick small{display:none}
  .pick-ic{width:48px;height:48px;border-radius:14px}
  .pick b{font-size:15px}
  .pick::after{right:8px;top:8px;width:18px;height:18px;background-size:10px}
  .prep{margin-bottom:28px}
  .tut{grid-template-columns:1fr;gap:18px}
  .tut-stage{position:static}
  .tut-device::before{width:300px;height:300px;margin:-150px 0 0 -150px}
  .tut-list::before{display:none}
  .ts{display:none;cursor:default}
  .ts.on{display:grid}
  .qa-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  .container{padding:0 16px}
  body{font-size:15px}
  .hero-brand{gap:10px}
  .hero-brand img,.hero-desc .nm{display:none}
  .hero-brand h1{font-size:16px}
  .hero-slogan{margin-top:22px;font-size:36px}
  .hero-desc{font-size:15px}
  .dlp{margin-top:26px;padding:16px}
  .dlp-t{font-size:16px}
  .hero-visual{height:430px}
  .device{border-radius:36px;padding:8px}
  .device-screen{border-radius:29px}
  .device-main{width:196px;margin-left:-98px}
  .device-back{width:156px;top:60px;right:0}
  .device::before{width:60px;height:18px;margin-left:-30px;top:14px}
  .chip{padding:8px 12px 8px 8px;font-size:11px}
  .chip b{font-size:12px}
  .chip i{width:30px;height:30px}
  .chip-a{top:110px}
  .chip-b{bottom:90px}
  .chip-c{display:none}
  .hero-wave{height:50px}
  .hl{padding:20px 16px;gap:12px;flex-direction:column;align-items:flex-start}
  .hl i{width:44px;height:44px}
  .hl b{font-size:15px}
  .sec{padding:64px 0}
  .sec-hd{margin-bottom:40px}
  .sc-visual{height:440px;border-radius:24px}
  .sc-visual .device{width:220px;margin-left:-110px;top:40px}
  .exp-grid{grid-template-columns:1fr}
  .exp{padding:26px 22px}
  .plat-band{padding:64px 0}
  .plat{padding:26px}
  .ft-top{gap:28px 10px;padding:40px 0 28px}
  .ft-about p{margin-top:12px;font-size:13px;line-height:1.7}
  .ft h4{margin-bottom:12px;font-size:14px}
  .ft li{font-size:13px}
  .ft li+li{margin-top:8px}
  .ft-seo{padding-bottom:20px;font-size:11px;line-height:1.75}
  .ft-bottom{flex-direction:column;align-items:center;gap:4px;padding:18px 0 24px;font-size:12px;text-align:center}

  .app-id{gap:12px}
  .app-id img{width:68px;height:68px;border-radius:18px}
  .app-id h1{font-size:26px}
  .app-id p{font-size:14px}
  .badges{gap:6px 16px;margin-top:14px}
  .badges span{font-size:13px}
  .badges svg{width:15px;height:15px}
  .badges span:nth-child(4){display:none}
  .pick-row{margin-top:28px}
  .pick-row>b{font-size:14px}
  .dl-card{flex-direction:column}
  .dl-qr{width:auto}
  .os-switch button{font-size:14px;gap:6px}
  .os-switch button svg{width:17px;height:17px}
  .dl-card{padding:18px;border-radius:20px}
  .dl-btns .big-btn,.dl-btns .btn{width:100%;justify-content:center}
  .appinfo{padding:18px 0}
  .appinfo>div{padding:0 6px}
  .appinfo b{font-size:17px}
  .gallery{margin:0 -16px;padding:6px 16px 24px}
  .gallery figure{flex-basis:44%}
  .card{padding:22px 18px}
  .help{padding:30px 20px;border-radius:22px}
  .help-btns .btn{flex:1 1 100%}
  .g-hero h1{font-size:30px}
  .g-hero .sub{font-size:15px}
  .prep{padding:16px}
  .prep .btn{width:100%}
  .tut-device .handset{transform:scale(.9);transform-origin:top center;margin-bottom:-52px}
  .ts{grid-template-columns:38px minmax(0,1fr);gap:14px;padding:20px 18px}
  .ts-no{width:38px;height:38px;border-radius:12px;font-size:15px}
  .ts h3{font-size:17px}
  .done-card{flex-direction:column;text-align:center;padding:24px 20px}
  .qa{padding:20px 18px}
  .qa>div{padding-left:0}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .rv{opacity:1;transform:none;transition:none}
  .chip,.fc,.fc-dl .bar i,.hit::after,.pane.is-on,.os-panel.is-on{animation:none}
  .screens .hs-screen{transition:none}
}