:root{
  /* 「信号 Signal」: 纸白 + 墨黑, 信号橙只留给需要你处理的地方 */
  --bg:#F6F5F2; --surface:#FFFFFF; --surface-2:#EFEDE8;
  --ink:#101418; --ink-2:#3D434A; --muted:#6C7178; --border:#E4E1DA;
  --accent:#FF5A1F; --accent-deep:#C23F0C; --accent-soft:#FFE6DA;
  --green:#1FA35B; --red:#D9463B; --orange:#F08A24;
  --radius:20px; --maxw:1140px;
  --shadow:0 1px 2px rgba(16,20,24,.04),0 18px 40px -20px rgba(16,20,24,.22);
  --display:"Bricolage Grotesque",var(--font);
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,"Cascadia Mono",Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);line-height:1.65;
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%}
code{font-family:var(--mono)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.narrow{max-width:780px}
.center{text-align:center;justify-content:center}

/* nav */
.topbar{position:sticky;top:0;z-index:50;background:rgba(246,245,242,.85);backdrop-filter:saturate(1.3) blur(12px);
  border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;letter-spacing:-.01em}
.brand{flex-shrink:0}
.brand img{border-radius:8px}
.nav-links{display:flex;gap:26px;font-size:.95rem;color:var(--ink-2)}
.nav-links a:hover{color:var(--accent)}
.nav-right{display:flex;align-items:center;gap:12px}
.lang{border:1px solid var(--border);background:var(--surface);color:var(--ink-2);font:600 .82rem var(--font);
  padding:6px 10px;border-radius:999px;cursor:pointer}
.lang:hover{border-color:var(--accent);color:var(--accent)}
select.lang{appearance:none;-webkit-appearance:none;padding-right:26px;max-width:9.5em;
  background:var(--surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%236C7178' stroke-width='1.6'/%3E%3C/svg%3E") no-repeat right 10px center}
/* 语言菜单: 胶囊按钮 + 浮动面板 (site.js 把原生 select 升级成它) */
.lang-picker{position:relative}
.lang-native{position:absolute;opacity:0;pointer-events:none;width:1px;height:1px}
.lang-trigger{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--border);background:var(--surface);
  color:var(--ink-2);font:600 .82rem var(--font);padding:7px 12px;border-radius:999px;cursor:pointer;transition:.16s}
.lang-trigger:hover,.lang-trigger[aria-expanded="true"]{border-color:var(--accent);color:var(--accent)}
.lang-trigger span{max-width:9em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lang-caret{transition:transform .16s}
.lang-trigger[aria-expanded="true"] .lang-caret{transform:rotate(180deg)}
.lang-menu{position:absolute;right:0;top:calc(100% + 8px);z-index:60;margin:0;padding:6px;list-style:none;
  min-width:184px;max-height:min(420px,70vh);overflow-y:auto;background:var(--surface);border:1px solid var(--border);
  border-radius:16px;box-shadow:0 18px 44px -14px rgba(16,20,24,.28);animation:lang-in .14s ease-out}
.lang-menu li{padding:9px 12px;border-radius:10px;font-size:.93rem;color:var(--ink);cursor:pointer;white-space:nowrap;outline:none}
.lang-menu li:hover,.lang-menu li:focus{background:var(--surface-2)}
.lang-menu li[aria-selected="true"]{color:var(--accent-deep);font-weight:700;background:var(--accent-soft)}
@keyframes lang-in{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;padding:12px 24px;border-radius:999px;
  border:1.5px solid transparent;transition:.16s;white-space:nowrap}
.btn-sm{padding:8px 16px;font-size:.9rem}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px -12px rgba(255,90,31,.7)}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px)}
.btn-ghost{border-color:var(--border);background:var(--surface)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}

/* hero */
.hero{padding:72px 0 56px;background:radial-gradient(700px 420px at 88% 8%,rgba(255,90,31,.14),transparent 70%)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:48px;align-items:center}
.pill{display:inline-block;font-size:.82rem;font-weight:600;color:var(--accent-deep);background:var(--accent-soft);
  padding:6px 12px;border-radius:999px}
h1{font-family:var(--display);font-size:clamp(2.6rem,6vw,4.4rem);line-height:1.04;letter-spacing:-.035em;margin:18px 0 18px;font-weight:800}
.grad{color:var(--accent)}
.lead{font-size:1.15rem;color:var(--ink-2);max-width:34em;margin:0 0 28px}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:14px}
.store-btn{display:inline-flex;align-items:center;gap:12px;background:var(--ink);color:#fff;padding:11px 20px 11px 16px;
  border-radius:14px;transition:.16s;border:1.5px solid var(--ink)}
.store-btn span{display:flex;flex-direction:column;line-height:1.15}
.store-btn small{font-size:.72rem;opacity:.8}
.store-btn b{font-size:1.08rem}
.store-btn:hover{transform:translateY(-1px);box-shadow:0 12px 24px -12px rgba(22,19,31,.5)}
.store-btn.ghost{background:var(--surface);color:var(--ink);border-color:var(--border)}
.store-btn.ghost:hover{border-color:var(--accent)}
.fine{font-size:.85rem;color:var(--muted);margin:0}

/* phone mock */
.hero-visual{position:relative;display:flex;justify-content:center;padding:40px 0 10px}
.phone{width:300px;border-radius:46px;background:#101418;padding:12px;box-shadow:0 40px 80px -34px rgba(16,20,24,.5),0 0 0 2px #2A2E33 inset}
.phone-notch{position:absolute;margin:8px 0 0 104px;width:80px;height:24px;background:#101418;border-radius:14px;z-index:2}
.screen{background:#FBFAF8;border-radius:36px;height:590px;padding:46px 14px 14px;display:flex;flex-direction:column;gap:9px;overflow:hidden;font-size:.8rem}
.s-head{display:flex;gap:8px;align-items:center;font-weight:700;font-size:.82rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:4px}
.s-back{color:var(--accent);font-size:1.3rem;line-height:1}
.bubble-user{align-self:flex-end;background:var(--ink);color:#fff;padding:9px 12px;border-radius:16px 16px 4px 16px;max-width:86%;line-height:1.45}
.s-text{margin:2px 0;line-height:1.5;color:var(--ink)}
.tool{display:flex;align-items:center;gap:8px;background:#F4F3F8;border-radius:10px;padding:7px 10px}
.tool code{flex:1;font-size:.74rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.t-ico{color:var(--muted);width:14px;text-align:center}
.ok{color:var(--green);font-weight:700}
.diff{display:flex;flex-direction:column;font:.7rem/1.6 var(--mono);border-radius:8px;overflow:hidden}
.diff .del{background:rgba(217,70,59,.08);color:var(--red);padding:0 8px}
.diff .add{background:rgba(31,163,91,.1);color:var(--green);padding:0 8px}
.perm{border:1.5px solid var(--accent);background:var(--accent-soft);border-radius:14px;padding:10px;display:flex;flex-direction:column;gap:8px}
.perm-title{font-weight:700;color:var(--ink)}
.perm code{background:rgba(0,0,0,.05);border-radius:7px;padding:6px 8px;font-size:.74rem}
.perm-btns{display:flex;justify-content:space-between}
.pb-deny{color:var(--ink);background:#fff;border:1px solid var(--border);padding:4px 12px;border-radius:999px;font-weight:600}
.pb-allow{color:#fff;background:var(--accent);padding:4px 16px;border-radius:999px;font-weight:600}
.s-input{margin-top:auto;background:#F1EFF6;border-radius:18px;padding:9px 12px;color:var(--muted)}
.notif{position:absolute;top:0;right:-10px;z-index:3;width:300px;display:flex;gap:10px;padding:12px;border-radius:20px;
  background:rgba(255,255,255,.86);backdrop-filter:blur(18px);box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.6);
  animation:drop 6s ease-in-out infinite}
.notif-icon img{width:34px;height:34px;border-radius:9px}
.notif-body{flex:1;min-width:0;font-size:.8rem}
.notif-top{display:flex;justify-content:space-between;gap:8px;color:var(--muted)}
.notif-top b{color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.notif-body code{display:block;font-size:.74rem;margin:2px 0 8px}
.notif-actions{display:flex;gap:8px}
.notif-actions span{flex:1;text-align:center;padding:5px 0;border-radius:9px;font-weight:600;background:rgba(0,0,0,.05)}
.na-allow{color:var(--accent-deep)}
.na-deny{color:var(--ink)}
/* 首帧即可见 (截图/慢设备也能看到), 之后周期性"再推送一次" */
@keyframes drop{0%,76%{transform:none;opacity:1}84%,88%{transform:translateY(-16px);opacity:0}96%,100%{transform:none;opacity:1}}
@media (prefers-reduced-motion:reduce){.notif{animation:none}}

/* band */
.band{background:var(--ink);color:#fff;padding:34px 0}
.band-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.band-grid div{display:flex;flex-direction:column;gap:2px}
.band-grid span{color:rgba(255,255,255,.7);font-size:.95rem}
.big{font-family:var(--display);font-size:2rem;font-weight:800;letter-spacing:-.02em;color:var(--accent)}

/* sections */
.section{padding:88px 0}
.section.alt{background:var(--surface-2)}
.eyebrow{font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
h2{font-family:var(--display);font-size:clamp(1.8rem,3.6vw,2.6rem);letter-spacing:-.025em;line-height:1.15;margin:10px 0 12px}
.sub{color:var(--ink-2);font-size:1.08rem;margin:0 0 36px;max-width:40em}
h3{margin:0 0 8px;font-size:1.12rem}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px}
.step p,.card p{color:var(--ink-2);margin:0}
.num{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--accent);color:#fff;font-weight:800;margin-bottom:14px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:32px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px;transition:.18s}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.c-ico{font-size:1.6rem;margin-bottom:12px}

/* security */
.sec-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.checks{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}
.checks li{position:relative;padding-left:30px;color:var(--ink-2)}
.checks li::before{content:"✓";position:absolute;left:0;top:1px;width:20px;height:20px;border-radius:50%;background:var(--accent-soft);
  color:var(--accent);font-weight:800;font-size:.75rem;display:grid;place-items:center}
.flow{display:flex;flex-direction:column;align-items:center}
.node{width:100%;max-width:300px;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:16px 18px;
  display:flex;justify-content:space-between;align-items:center;box-shadow:var(--shadow)}
.node small{color:var(--muted)}
.node.mac{border-color:var(--accent)}
.node.code{background:var(--ink);color:#fff;border-color:var(--ink)}
.node.code small{color:rgba(255,255,255,.65)}
.link{height:70px;border-left:2px dashed var(--accent);display:flex;align-items:center;padding-left:14px;font-size:.82rem;color:var(--accent);font-weight:600}
.link.short{height:44px}

/* pricing */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;align-items:stretch}
.plan{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px}
.plan.featured{border:2px solid var(--accent);box-shadow:var(--shadow)}
.tag{position:absolute;top:-12px;left:22px;background:var(--accent);color:#fff;font-size:.75rem;font-weight:700;padding:3px 10px;border-radius:999px}
.price{font-size:2.1rem;font-weight:850;letter-spacing:-.02em;margin:4px 0 14px}
.price small{font-size:1rem;color:var(--muted);font-weight:600}
.plan ul{margin:0;padding-left:18px;color:var(--ink-2);display:flex;flex-direction:column;gap:6px}
.fine.center{margin-top:22px}

/* faq */
details{border-bottom:1px solid var(--border);padding:18px 0}
summary{cursor:pointer;font-weight:650;font-size:1.05rem;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--accent);font-weight:700;font-size:1.3rem;line-height:1}
details[open] summary::after{content:"−"}
details p{color:var(--ink-2);margin:10px 0 0}

/* final + footer */
.final{padding:80px 0;background:linear-gradient(180deg,var(--bg),var(--surface-2))}
.final-inner{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px}
.final img{border-radius:18px;box-shadow:var(--shadow)}
.footer{border-top:1px solid var(--border);padding:32px 0 40px}
.foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px}
.foot nav{display:flex;gap:22px;color:var(--ink-2)}
.foot nav a:hover{color:var(--accent)}
.foot small{flex-basis:100%;color:var(--muted)}

/* 文档页 (隐私 / 条款 / 支持) */
.doc{padding:56px 0 80px}
.doc h1{font-size:clamp(2rem,4vw,2.8rem);margin:0 0 6px}
.doc .updated{color:var(--muted);margin:0 0 32px}
.doc h2{font-size:1.35rem;margin:36px 0 10px}
.doc p,.doc li{color:var(--ink-2)}
.doc table{width:100%;border-collapse:collapse;margin:14px 0;font-size:.95rem}
.doc th,.doc td{border:1px solid var(--border);padding:10px 12px;text-align:left;vertical-align:top}
.doc th{background:var(--surface-2)}
.doc .box{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:20px 22px;margin:18px 0}
.doc a{color:var(--accent);text-decoration:underline}
[data-lang-block]{display:none}
/* 法律页只有中/英两版: 简繁中文看中文, 其它语言看英文; 没有 JS 时显示中文 */
html:not([data-block]) [data-lang-block="zh"],html[data-block="zh"] [data-lang-block="zh"],html[data-block="en"] [data-lang-block="en"]{display:block}

/* responsive */
@media (max-width:960px){
  .hero-grid,.sec-grid{grid-template-columns:minmax(0,1fr)}
  .hero{padding-top:44px}
  .cards,.steps{grid-template-columns:1fr 1fr}
  .plans{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
}
@media (max-width:620px){
  .cards,.steps,.plans,.band-grid{grid-template-columns:1fr}
  .hero-visual{padding-top:118px}
  .notif{right:0;left:0;margin:0 auto;width:280px}
  .phone{width:280px}
  .phone-notch{margin-left:98px}
  .section{padding:64px 0}
  /* 窄屏顶栏只放 logo + 语言; 下载按钮紧接在首屏里 */
  .nav-right .btn{display:none}
}

/* Long translations must wrap within the viewport, including narrow phones. */
.hero-grid>*{min-width:0}
.nav-right{min-width:0}
.store-btn{max-width:100%}
.store-btn span{min-width:0;overflow-wrap:anywhere}
.store-btn svg{flex-shrink:0}
@media (max-width:620px){.hero-visual{padding-top:24px}.lang{max-width:130px}.lang-trigger span{max-width:6.5em}.lead,.fine{overflow-wrap:anywhere}}