:root{
  --bg:#faf7f0;
  --bg-2:#f3eee2;
  --bg-3:#ece6d6;
  --ink:#2b2721;
  --ink-dim:#6f695c;
  --lime:#e8491d;
  --lime-soft:#ff6a3d;
  --accent-soft:#ffe9dd;
  --line:rgba(232,73,29,.22);
  --line-soft:rgba(43,39,33,.10);
  --card:#ffffff;
  --radius:14px;
  --font:"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible,summary:focus-visible{
  outline:2px solid var(--lime);outline-offset:3px;border-radius:4px;
}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
section{padding:96px 0;position:relative}
.kicker{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.22em;
  color:var(--lime);text-transform:uppercase;
  border:1px solid var(--line);padding:6px 14px;border-radius:999px;margin-bottom:20px;
}
h1,h2,h3{line-height:1.2;letter-spacing:-.02em}
.sec-title{font-size:clamp(30px,4.5vw,48px);font-weight:800;margin-bottom:18px}
.sec-sub{color:var(--ink-dim);max-width:680px;font-size:17px}
.center{text-align:center}
.center .sec-sub{margin:0 auto}

/* ---------- NAV ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:rgba(250,247,240,.85);
  border-bottom:1px solid var(--line-soft);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:.02em}
.brand-mark{
  width:30px;height:30px;border-radius:8px;background:var(--lime);
  display:grid;place-items:center;color:#fff;font-weight:900;font-size:15px;
}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{
  font-size:14px;color:var(--ink-dim);padding:8px 14px;border-radius:8px;
  transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:var(--ink);background:rgba(232,73,29,.08)}
.nav-cta{
  font-size:14px;font-weight:700;color:#fff;background:var(--lime);
  padding:9px 20px;border-radius:8px;transition:transform .2s ease,background .2s ease;
  display:inline-block;
}
.nav-cta:hover{background:var(--lime-soft);transform:translateY(-1px)}
.menu-btn{
  display:none;background:none;border:1px solid var(--line);border-radius:8px;
  color:var(--ink);width:44px;height:44px;cursor:pointer;font-size:20px;line-height:1;
}

/* ---------- HERO ---------- */
.hero{
  min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  padding:140px 0 0;position:relative;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(60% 50% at 80% 20%,rgba(232,73,29,.07),transparent 70%);
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--lime);
  border:1px solid var(--line);border-radius:999px;padding:6px 16px;margin-bottom:26px;
  letter-spacing:.12em;
}
.hero-tag .dot{width:7px;height:7px;border-radius:50%;background:var(--lime);
  animation:pulse 1.8s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
.hero h1{
  font-size:clamp(40px,6.4vw,76px);font-weight:900;letter-spacing:-.03em;
}
.hero h1 .accent{color:var(--lime)}
.hero-desc{
  color:var(--ink-dim);max-width:56ch;margin:26px 0 36px;font-size:17px;
}
.hero-desc strong{color:var(--ink);font-weight:600}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:16px;
  padding:15px 32px;border-radius:10px;cursor:pointer;border:none;
  transition:transform .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--lime);color:#fff}
.btn-primary:hover{background:var(--lime-soft);transform:translateY(-2px)}
.btn-ghost{
  background:transparent;color:var(--ink);border:1px solid var(--line);
}
.btn-ghost:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px)}
.hero-figure{position:relative}
.img-frame{
  position:relative;overflow:hidden;border-radius:var(--radius);
  border:1px solid var(--line-soft);background:var(--bg-3);
}
.img-frame img{
  width:100%;height:100%;object-fit:cover;display:block;
  transition:transform .35s ease;
}
.img-frame:hover img{transform:scale(1.05)}
.hero-figure .img-frame{
  aspect-ratio:16/10;border-color:var(--line);
  box-shadow:0 30px 60px -30px rgba(43,39,33,.35);
}
.hero-figure::after{
  content:"";position:absolute;inset:-14px;border:1px dashed var(--line);
  border-radius:calc(var(--radius) + 10px);pointer-events:none;
  animation:spin-border 30s linear infinite;
}
@keyframes spin-border{to{transform:rotate(0.001deg)}}
.hero-stats{
  position:relative;margin-top:64px;border-top:1px solid var(--line-soft);
  display:grid;grid-template-columns:repeat(4,1fr);
}
.hstat{padding:28px 8px;border-right:1px solid var(--line-soft);text-align:center}
.hstat:last-child{border-right:none}
.hstat .num{
  font-size:clamp(26px,3vw,38px);font-weight:900;color:var(--lime);
  letter-spacing:-.02em;font-variant-numeric:tabular-nums;
}
.hstat .label{color:var(--ink-dim);font-size:14px;margin-top:4px}

/* marquee */
.marquee{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:var(--lime);color:#fff;overflow:hidden;white-space:nowrap;
  margin-top:72px;padding:12px 0;
}
.marquee-track{display:inline-flex;gap:48px;animation:scroll 26s linear infinite;will-change:transform}
.marquee-track span{font-weight:800;font-size:15px;letter-spacing:.14em}
@keyframes scroll{to{transform:translateX(-50%)}}

/* ---------- ABOUT ---------- */
.about{background:var(--bg-2)}
.about p{color:var(--ink-dim);max-width:76ch}
.about p strong{color:var(--ink);font-weight:600}
.about-cols{display:grid;grid-template-columns:1fr 1fr;gap:48px;margin-top:44px}
.about-cols .big{
  font-size:clamp(20px,2.2vw,26px);font-weight:700;color:var(--ink);line-height:1.5;
}
.about-cols .big em{font-style:normal;color:var(--lime)}

/* ---------- FEATURES ---------- */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line-soft);margin-top:56px;border:1px solid var(--line-soft);border-radius:var(--radius);overflow:hidden}
.feature{
  background:var(--card);padding:36px 30px;
  transition:background .25s ease;
}
.feature:hover{background:var(--bg-3)}
.feature svg{color:var(--lime);margin-bottom:18px}
.feature h3{font-size:19px;font-weight:700;margin-bottom:10px}
.feature p{color:var(--ink-dim);font-size:15px}

/* ---------- PRODUCTS ---------- */
.products{background:var(--bg-2)}
.product{
  display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center;
  padding:72px 0;border-top:1px solid var(--line-soft);
}
.product:first-of-type{border-top:none}
.product.flip .p-media{order:-1}
.p-badge{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.18em;
  color:var(--lime);border:1px solid var(--line);border-radius:999px;
  padding:5px 14px;margin-bottom:18px;
}
.p-title{font-size:clamp(26px,3.4vw,40px);font-weight:800}
.p-sub{color:var(--ink-dim);font-size:16px;margin:10px 0 26px}
.p-list{list-style:none;display:grid;gap:14px}
.p-list li{
  display:flex;gap:14px;align-items:flex-start;color:var(--ink-dim);font-size:15px;
}
.p-list li b{color:var(--ink);font-weight:600}
.p-list .tick{
  flex-shrink:0;width:22px;height:22px;margin-top:2px;border-radius:50%;
  border:1px solid var(--lime);color:var(--lime);display:grid;place-items:center;
  font-size:11px;font-weight:900;
}
.p-media{position:relative}
.p-media .img-frame{aspect-ratio:8/5}
.p-media .img-frame:hover{border-color:var(--line)}
.p-num{
  position:absolute;top:-30px;right:-6px;font-size:110px;font-weight:900;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(232,73,29,.25);pointer-events:none;
  font-family:var(--font);letter-spacing:-.04em;
}
.p-cta{margin-top:30px;display:inline-flex;align-items:center;gap:8px;font-weight:700;color:var(--lime);font-size:16px;transition:gap .2s ease}
.p-cta:hover{gap:14px}
.p-cta::after{content:"→";transition:transform .2s ease}

/* ---------- PRICING ---------- */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:56px}
.plan{
  border:1px solid var(--line-soft);border-radius:var(--radius);
  padding:40px 32px;background:var(--card);position:relative;
  display:flex;flex-direction:column;
  transition:border-color .25s ease,transform .25s ease;
}
.plan:hover{border-color:var(--line);transform:translateY(-4px)}
.plan.hot{border-color:var(--lime);background:linear-gradient(160deg,#fff1e9,var(--card) 60%)}
.plan .tag{
  position:absolute;top:-13px;left:32px;background:var(--lime);color:#fff;
  font-size:12px;font-weight:800;letter-spacing:.1em;padding:4px 12px;border-radius:6px;
}
.plan h3{font-size:20px;font-weight:800}
.plan .price{font-size:44px;font-weight:900;color:var(--lime);margin:14px 0 4px;letter-spacing:-.02em}
.plan .price small{font-size:15px;color:var(--ink-dim);font-weight:400}
.plan p{color:var(--ink-dim);font-size:15px;margin-bottom:28px;flex:1}
.plan .btn{justify-content:center;width:100%;padding:13px 24px}

/* ---------- FAQ ---------- */
.faq-list{margin-top:48px;border-top:1px solid var(--line-soft)}
.faq-list details{border-bottom:1px solid var(--line-soft)}
.faq-list summary{
  list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;
  gap:24px;padding:24px 4px;font-weight:700;font-size:17px;
  transition:color .2s ease;
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:hover{color:var(--lime)}
.faq-list summary .plus{
  flex-shrink:0;width:28px;height:28px;border:1px solid var(--line);border-radius:50%;
  display:grid;place-items:center;color:var(--lime);font-size:16px;font-weight:400;
  transition:transform .25s ease;
}
.faq-list details[open] summary .plus{transform:rotate(45deg)}
.faq-list details p{color:var(--ink-dim);padding:0 44px 26px 4px;font-size:15px;max-width:76ch}

/* ---------- FOOTER ---------- */
footer{background:var(--lime);padding:64px 0 40px;color:#fff}
.friend{display:flex;flex-wrap:wrap;gap:8px 18px;margin-bottom:32px}
.friend span{color:rgba(255,255,255,.75);font-size:13px;width:100%}
.friend a{color:rgba(255,255,255,.78);font-size:13px;transition:color .2s ease}
.friend a:hover{color:#fff}
.f-copy{color:rgba(255,255,255,.85);font-size:13px;display:flex;flex-direction:column;gap:8px}
.f-copy b{color:#fff;font-weight:600}

/* back to top */
.btt{
  position:fixed;right:24px;bottom:24px;z-index:90;
  width:48px;height:48px;border-radius:50%;border:1px solid var(--line);
  background:rgba(255,255,255,.94);color:var(--lime);cursor:pointer;font-size:18px;
  display:grid;place-items:center;opacity:0;pointer-events:none;
  transition:opacity .25s ease,transform .25s ease;
  transform:translateY(8px);
}
.btt.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.btt:hover{background:var(--lime);color:#fff}

/* reveal */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- RESPONSIVE ---------- */
@media (max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .hero-inner{grid-template-columns:1fr;gap:48px}
  .hero-figure{max-width:560px}
}
@media (max-width:768px){
  section{padding:72px 0}
  .hero-figure .img-frame{aspect-ratio:4/3}
  .p-media .img-frame{aspect-ratio:4/3}
  .nav-links{
    position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;
    background:rgba(250,247,240,.97);border-bottom:1px solid var(--line-soft);
    padding:12px 24px 20px;display:none;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 8px;font-size:16px}
  .menu-btn{display:grid;place-items:center}
  .nav-cta{display:none}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .hstat:nth-child(2){border-right:none}
  .hstat{border-bottom:1px solid var(--line-soft)}
  .hstat:nth-child(3),.hstat:nth-child(4){border-bottom:none}
  .about-cols{grid-template-columns:1fr;gap:24px}
  .features-grid{grid-template-columns:1fr}
  .product{grid-template-columns:1fr;gap:32px;padding:56px 0}
  .product.flip .p-media{order:0}
  .p-num{font-size:72px;top:-18px}
  .pricing-grid{grid-template-columns:1fr;gap:40px}
  .btn{width:100%;justify-content:center}
  .hero-actions{flex-direction:column}
}