:root{
  --bg:#f4faf8; --bg-soft:#eaf5f1;
  --card:#fff; --ink:#14201d; --ink-2:#4b5d58; --ink-3:#869894;
  --line:#e2ece8; --accent:#2f9d8b; --accent-2:#227a6b; --accent-soft:#e3f4ee;
  --warn:#b45309; --radius:20px;
  --shadow:0 1px 2px rgba(20,50,44,.04), 0 14px 36px rgba(20,50,44,.07);
  --shadow-lg:0 24px 60px rgba(20,50,44,.12);
  --max:1100px;
  --nav-h:64px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth; scroll-padding-top:calc(var(--nav-h) + 16px)}
body{
  margin:0; color:var(--ink);
  font:15px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:
    radial-gradient(900px 520px at 8% -10%, #e6f7f0 0%, rgba(230,247,240,0) 60%),
    radial-gradient(760px 460px at 92% 2%, #eef3ff 0%, rgba(238,243,255,0) 58%),
    var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--accent-2);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.skip{position:absolute;left:-9999px;top:0;background:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:99}
.skip:focus{left:0}

/* ---------- 品牌球 ---------- */
.orb{
  display:inline-block;border-radius:26%;flex:none;position:relative;
  background:radial-gradient(circle at 34% 28%, #b9b2ff 0%, #6f63e8 30%, #3b2f9c 66%, #16123f 100%);
  box-shadow:inset 0 1px 6px rgba(255,255,255,.35), 0 10px 26px rgba(52,40,140,.26);
}
.orb::after{
  content:"";position:absolute;inset:22%;border-radius:50%;
  background:radial-gradient(circle at 42% 38%, rgba(255,255,255,.92), rgba(255,255,255,0) 62%);
  opacity:.55;
}
.orb--sm{width:28px;height:28px}
.orb--lg{width:84px;height:84px;border-radius:22px}

/* ---------- 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:50;height:var(--nav-h);
  display:flex;align-items:center;gap:20px;
  padding:0 24px;max-width:var(--max);margin:0 auto;
  background:rgba(244,250,248,.82);backdrop-filter:saturate(180%) blur(14px);
  transition:box-shadow .2s, border-color .2s;
  border-bottom:1px solid transparent;
}
.nav.is-stuck{border-color:var(--line);box-shadow:0 6px 20px rgba(20,50,44,.05)}
.nav__brand{display:flex;align-items:center;gap:9px;color:inherit}
.nav__brand:hover{text-decoration:none}
.nav__word{font-size:19px;letter-spacing:.16em;font-weight:600}
.nav__links{display:flex;gap:24px;margin-left:auto}
.nav__links a{color:var(--ink-2);font-size:14px;padding:6px 2px;border-bottom:1px solid transparent}
.nav__links a:hover,.nav__links a.on{color:var(--accent-2);border-color:var(--accent);text-decoration:none}
.nav__cta{
  font-size:14px;color:#fff;background:var(--accent-2);padding:9px 18px;
  border-radius:999px;white-space:nowrap;transition:background .18s;
}
.nav__cta:hover{background:#1b6558;text-decoration:none}
.nav__toggle{
  display:none;margin-left:auto;width:40px;height:40px;border:1px solid var(--line);
  background:#fff;border-radius:11px;cursor:pointer;align-items:center;justify-content:center;
}
.nav__toggle span{display:block;width:16px;height:1.6px;background:var(--ink);position:relative}
.nav__toggle span::before,.nav__toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1.6px;background:var(--ink);
}
.nav__toggle span::before{top:-5px}
.nav__toggle span::after{top:5px}

/* ---------- 通用 ---------- */
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.eyebrow{
  font-size:12.5px;letter-spacing:.16em;color:var(--accent-2);
  display:inline-flex;align-items:center;gap:8px;text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent)}
h1,h2,h3{letter-spacing:.01em;margin:0}
.section{padding:72px 0 8px}
.section__head{max-width:640px;margin-bottom:32px}
.section__head h2{font-size:27px;margin:10px 0 8px}
.section__head p{margin:0;color:var(--ink-3);font-size:14.5px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:14px;padding:11px 20px;border-radius:999px;cursor:pointer;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  transition:transform .15s, background .18s, border-color .18s, box-shadow .18s;
}
.btn:hover{border-color:#c8ded7;background:#fbfefd;text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn--primary{background:var(--accent-2);border-color:var(--accent-2);color:#fff}
.btn--primary:hover{background:#1b6558;border-color:#1b6558;color:#fff;box-shadow:0 8px 20px rgba(34,122,107,.22)}
.btn--lg{padding:13px 26px;font-size:15px}
.btn--block{width:100%}

/* ---------- Hero ---------- */
.hero{padding:56px 0 24px}
.hero__grid{
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.hero h1{font-size:44px;line-height:1.24;margin:16px 0 14px;font-weight:600}
.hero h1 em{font-style:normal;color:var(--accent-2);position:relative}
.hero h1 em::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:7px;
  background:linear-gradient(90deg, rgba(47,157,139,.22), rgba(47,157,139,0));
  border-radius:3px;z-index:-1;
}
.hero__sub{color:var(--ink-2);font-size:15.5px;max-width:34em;margin:0 0 26px}
.hero__actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:22px}
.hero__meta{display:flex;gap:18px;flex-wrap:wrap;color:var(--ink-3);font-size:12.5px}
.hero__meta span{display:inline-flex;align-items:center;gap:6px}
.dot{width:5px;height:5px;border-radius:50%;background:var(--accent);display:inline-block}

/* 手机模型 */
.phone{
  position:relative;width:100%;max-width:330px;margin:0 auto;aspect-ratio:9/18.5;
  background:linear-gradient(160deg,#ffffff,#f4fbf8);
  border:1px solid #dbe9e4;border-radius:38px;
  box-shadow:var(--shadow-lg);padding:14px;display:flex;flex-direction:column;gap:10px;
}
.phone::before{
  content:"";position:absolute;top:12px;left:50%;transform:translateX(-50%);
  width:74px;height:5px;border-radius:99px;background:#dfeae6;
}
.phone__bar{
  margin-top:8px;display:flex;align-items:center;gap:8px;
  font-size:11.5px;color:var(--ink-3);padding:0 4px;
}
.phone__bar .orb--xs{width:18px;height:18px;border-radius:6px}
.phone__body{flex:1;display:flex;flex-direction:column;gap:9px;padding:4px 2px;overflow:hidden}
.bubble{
  max-width:82%;padding:9px 13px;border-radius:15px;font-size:12.5px;line-height:1.6;
  background:#fff;border:1px solid #e8f0ed;box-shadow:0 1px 2px rgba(20,50,44,.03);
}
.bubble--out{align-self:flex-end;background:var(--accent-2);color:#fff;border-color:var(--accent-2)}
.bubble--sys{align-self:center;background:transparent;border:none;box-shadow:none;color:var(--ink-3);font-size:11px}
.typing{display:inline-flex;gap:3px;padding:2px 0}
.typing i{width:4px;height:4px;border-radius:50%;background:#b9c8c3;animation:blink 1.2s infinite}
.typing i:nth-child(2){animation-delay:.2s}
.typing i:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,60%,100%{opacity:.35}30%{opacity:1}}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.step{padding:24px}
.step__n{
  font-size:12px;color:var(--accent-2);background:var(--accent-soft);
  width:26px;height:26px;border-radius:8px;display:inline-flex;
  align-items:center;justify-content:center;margin-bottom:14px;font-weight:600;
}
.step h3{font-size:16px;margin-bottom:6px}
.step p{margin:0;color:var(--ink-3);font-size:13.5px}

/* ---------- 下载 ---------- */
.dl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.dl__card{padding:24px;display:flex;flex-direction:column}
.dl__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.dl__ver{color:var(--ink-3);font-size:12.5px}
.tag{font-size:11.5px;padding:3px 9px;border-radius:999px;background:#eff4f2;color:var(--ink-2)}
.tag--ok{background:var(--accent-soft);color:var(--accent-2)}
.tag--warn{background:#fdf3e5;color:var(--warn)}
.dl__card h3{font-size:20px;margin-bottom:5px}
.dl__meta{margin:0 0 18px;color:var(--ink-3);font-size:12.5px}
.dl__more{margin-top:14px;font-size:12.5px;color:var(--ink-2)}
.dl__more summary{cursor:pointer;color:var(--ink-3)}
.dl__more p{margin:10px 0 0}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:11.5px;word-break:break-all}
.copy{border:none;background:transparent;color:var(--accent-2);cursor:pointer;font-size:12px;padding:0 4px}

/* ---------- 功能 ---------- */
.features{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.feature{padding:24px;display:flex;gap:14px}
.feature__ico{
  width:38px;height:38px;border-radius:11px;background:var(--accent-soft);
  color:var(--accent-2);display:flex;align-items:center;justify-content:center;flex:none;
}
.feature__ico svg{width:19px;height:19px}
.feature h3{font-size:15px;margin-bottom:4px}
.feature p{margin:0;color:var(--ink-3);font-size:13px}

/* ---------- 价格 ---------- */
.prices{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;align-items:start}
.price{
  position:relative;padding:28px 24px;display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
}
.price--best{border-color:#b9dfd4;box-shadow:0 0 0 3px rgba(47,157,139,.08), var(--shadow)}
.price__tag{position:absolute;top:-11px;left:24px;background:var(--accent);color:#fff;font-size:11.5px;padding:3px 10px;border-radius:999px}
.price h3{font-size:14.5px;color:var(--ink-2);font-weight:600;margin-bottom:8px}
.price__num{font-size:36px;font-weight:600;letter-spacing:-.015em;line-height:1.1}
.price__num small{font-size:16px;font-weight:500;margin-right:2px}
.price__unit{color:var(--ink-3);font-size:12.5px;margin:6px 0 18px}
.price ul{list-style:none;padding:0;margin:0 0 22px}
.price li{font-size:13px;color:var(--ink-2);padding:6px 0 6px 18px;position:relative}
.price li::before{content:"";position:absolute;left:0;top:13px;width:5px;height:5px;border-radius:50%;background:var(--accent)}
.price .btn{margin-top:auto}
.fineprint{margin:20px 0 0;color:var(--ink-3);font-size:12.5px}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:10px;max-width:820px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0 18px}
.faq summary{
  cursor:pointer;padding:15px 0;font-size:14.5px;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:12px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--ink-3);font-size:18px;line-height:1;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq p{margin:0 0 16px;color:var(--ink-2);font-size:13.5px}

/* ---------- 商店 / 账号 CTA ---------- */
.cta{
  display:flex;align-items:center;justify-content:space-between;gap:26px;
  padding:32px;border-radius:24px;border:1px solid #dcece6;
  background:linear-gradient(120deg,#eaf6f1,#eef3ff);
}
.cta h2{font-size:22px;margin-bottom:8px}
.cta p{margin:0;color:var(--ink-2);font-size:13.5px;max-width:56ch}
.account{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.account__col{padding:24px}
.account__col h3{font-size:17px;margin-bottom:6px}
.account__col p{margin:0 0 18px;color:var(--ink-2);font-size:13.5px}

/* ---------- 页脚 ---------- */
.foot{margin-top:80px;border-top:1px solid var(--line);padding:34px 0 46px}
.foot__grid{display:flex;justify-content:space-between;gap:28px;flex-wrap:wrap}
.foot__brand{display:flex;align-items:center;gap:8px;font-weight:600;letter-spacing:.14em}
.foot__ver{font-size:11.5px;color:var(--ink-3);letter-spacing:0;font-weight:400;margin-left:4px}
.foot__links{display:flex;gap:20px;flex-wrap:wrap;font-size:13px}
.foot__links a{color:var(--ink-2)}
.foot__note{margin:18px 0 0;color:var(--ink-3);font-size:12px;line-height:1.8}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease, transform .5s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:960px){
  .hero__grid{grid-template-columns:1fr;gap:40px}
  .phone{max-width:300px}
  .hero h1{font-size:38px}
  .steps,.features{grid-template-columns:1fr}
}
@media (max-width:820px){
  .nav__links{
    position:absolute;top:var(--nav-h);left:0;right:0;
    flex-direction:column;gap:0;background:#fff;border-bottom:1px solid var(--line);
    padding:8px 20px 14px;margin:0;display:none;box-shadow:0 12px 24px rgba(20,50,44,.06);
  }
  .nav__links.open{display:flex}
  .nav__links a{padding:12px 0;border-bottom:1px solid #f2f7f5;border-left:none}
  .nav__toggle{display:inline-flex}
  .nav__cta{display:none}
  .dl,.account{grid-template-columns:1fr}
  .prices{grid-template-columns:1fr;gap:20px}
  .cta{flex-direction:column;align-items:flex-start;padding:26px}
}
@media (max-width:520px){
  .hero{padding-top:32px}
  .hero h1{font-size:30px}
  .section{padding:52px 0 8px}
  .wrap{padding:0 18px}
  .nav{padding:0 18px}
  .foot{margin-top:56px}
}

/* 品牌 Logo（真实图标，替代此前的 CSS 光球） */
.logo{display:inline-block;flex:none;object-fit:cover;border-radius:26%;
  box-shadow:0 6px 16px rgba(40,30,110,.22)}
.logo--xs{width:18px;height:18px;border-radius:6px}
.logo--sm{width:28px;height:28px;border-radius:8px}
.logo--lg{width:84px;height:84px;border-radius:22px}

/* ---------- 公告条（后台「版本公告」驱动） ---------- */
.notice{background:#eff7f5;border-bottom:1px solid #d9eae5}
.notice--notice{background:#eef4fb;border-color:#d6e3f3}
.notice--warn{background:#fff7e9;border-color:#f2e0c2}
.notice__inner{display:flex;align-items:center;gap:10px;padding:9px 0;font-size:13.5px;flex-wrap:wrap}
.notice__tag{flex:none;font-size:11px;padding:2px 8px;border-radius:999px;background:#2f9d8b;color:#fff}
.notice--warn .notice__tag{background:#c9832a}
.notice--notice .notice__tag{background:#3a7bd5}
.notice__title{flex:1;min-width:0}
.notice__more,.notice__close{flex:none;border:0;background:transparent;color:#2f9d8b;
  font-size:12.5px;cursor:pointer;padding:2px 6px;border-radius:6px}
.notice__more:hover,.notice__close:hover{background:rgba(47,157,139,.1)}
.notice__close{font-size:16px;line-height:1;color:#8b9a95}
.notice__body{flex-basis:100%;color:#5b6b66;font-size:13px;line-height:1.85;
  white-space:pre-wrap;padding:6px 0 10px;border-top:1px dashed #d9eae5;margin-top:4px}

/* ---------- 客服区 ---------- */
.cs{display:grid;grid-template-columns:148px minmax(0,1fr);gap:24px;align-items:start}
.cs__qr{width:148px;height:148px;border-radius:14px;object-fit:cover;
  border:1px solid #e5e9e7;background:#fff}
.cs__qr--empty{display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:#8b9a95;background:#f4f7f6;line-height:1.6}
.cs__notice{color:#5b6b66;font-size:13.5px;margin:0 0 10px;line-height:1.8}
.cs__list{list-style:none;padding:0;margin:0 0 14px;color:#5b6b66;font-size:13.5px;line-height:2}
.cs__list strong{color:#12231f;font-weight:600}
@media (max-width:520px){.cs{grid-template-columns:1fr;justify-items:center;text-align:center}}

/* ---------- 区块布局档位（L2）：只改内部栅格，不改结构 ---------- */
.block--two .steps,.block--two .features,.block--two .prices,
.block--three .steps,.block--three .features,.block--three .prices{
  grid-template-columns:repeat(2,minmax(0,1fr))}
.block--three .steps,.block--three .features,.block--three .prices{
  grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:820px){
  .block--two .steps,.block--two .features,.block--two .prices,
  .block--three .steps,.block--three .features,.block--three .prices{
    grid-template-columns:1fr}
}