*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  color: #1f2430;
  background: #fff;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, h5 { margin: 0; font-weight: 700; letter-spacing: -0.02em; line-height: 1.3; }
p { margin: 0; }

:root {
  --brand: #f2711c;
  --brand-dark: #d25c0e;
  --brand-soft: #fff4ec;
  --bg-alt: #f7f8fa;
  --border: #e7e9ee;
  --text: #1f2430;
  --muted: #667085;
  --footer-bg: #12141a;
}

.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255,255,255,0.94);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  width: 38px; height: 38px; border-radius: 11px; flex: none;
  background: linear-gradient(135deg, var(--brand), #f7a44b);
  color: #fff; font-size: 19px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.25; }
.logo-text strong { font-size: 17px; letter-spacing: 0.02em; }
.logo-text small { font-size: 11px; color: var(--muted); font-weight: 400; letter-spacing: 0.01em; }
.nav-links { display: flex; align-items: center; gap: 30px; font-size: 15px; }
.nav-links a { color: var(--muted); transition: color .2s; white-space: nowrap; }
.nav-links a:hover { color: var(--brand-dark); }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(180deg, #fff8f2 0%, #ffffff 100%);
  border-bottom: 1px solid var(--border);
  padding: 88px 0 96px;
}
.hero-inner { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: center; }
.tag {
  display: inline-block; padding: 6px 14px; border-radius: 999px;
  background: var(--brand-soft); color: var(--brand-dark);
  border: 1px solid #ffdcc4;
  font-size: 13px; font-weight: 600; margin-bottom: 22px;
}
.hero h1 { font-size: 46px; line-height: 1.22; margin-bottom: 22px; letter-spacing: -0.01em; }
.lead { font-size: 17px; color: var(--muted); max-width: 560px; margin-bottom: 34px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 26px; border-radius: 8px; font-weight: 600; font-size: 15px;
  transition: transform .2s, box-shadow .2s, background .2s, border-color .2s;
  cursor: pointer;
}
.btn-primary {
  background: var(--brand); color: #fff;
  box-shadow: 0 6px 18px rgba(242, 113, 28, .22);
}
.btn-primary:hover { background: var(--brand-dark); transform: translateY(-1px); box-shadow: 0 10px 24px rgba(242,113,28,.28); }
.btn-ghost { background: #fff; color: var(--text); border: 1px solid #d7dbe2; }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand-dark); }

.hero-panel {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  background: #fff; border: 1px solid var(--border); border-radius: 18px;
  padding: 24px; box-shadow: 0 18px 40px rgba(17, 24, 39, .06);
}
.panel-item { display: flex; gap: 12px; padding: 8px; }
.panel-icon {
  width: 38px; height: 38px; flex: none; border-radius: 10px;
  background: var(--brand-soft); font-size: 18px;
  display: flex; align-items: center; justify-content: center;
}
.panel-item h3 { font-size: 15px; margin-bottom: 2px; }
.panel-item p { font-size: 13px; color: var(--muted); line-height: 1.5; }

/* ---------- Sections ---------- */
.section { padding: 88px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 52px; }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .12em;
  color: var(--brand); margin-bottom: 12px;
}
.section-title { font-size: 34px; margin-bottom: 14px; }
.section-sub { color: var(--muted); font-size: 16px; }
.sub-title { font-size: 20px; margin: 64px 0 28px; text-align: center; }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 64px; align-items: start; }
.about-text h2 { font-size: 34px; margin-bottom: 24px; }
.about-text p { color: #4a5060; font-size: 16px; margin-bottom: 16px; }
.about-text b { color: var(--text); }
.facts { list-style: none; margin: 0; padding: 8px 28px; background: var(--bg-alt); border: 1px solid var(--border); border-radius: 16px; }
.facts li {
  display: flex; flex-direction: column; gap: 4px;
  padding: 18px 0; border-bottom: 1px solid var(--border);
}
.facts li:last-child { border-bottom: none; }
.facts span { font-size: 13px; color: var(--muted); }
.facts strong { font-size: 15px; font-weight: 600; }

/* ---------- Grid / cards ---------- */
.grid { display: grid; gap: 24px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.card {
  background: #fff; border: 1px solid var(--border); border-radius: 16px;
  padding: 30px 26px; transition: transform .3s, box-shadow .3s, border-color .3s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 16px 34px rgba(17,24,39,0.07); border-color: #f6d3bb; }
.card-icon {
  display: flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; border-radius: 12px; background: var(--brand-soft);
  font-size: 21px; margin-bottom: 18px;
}
.card h3 { font-size: 18px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 14.5px; line-height: 1.75; }

/* ---------- Product ---------- */
.product-head { display: grid; grid-template-columns: 1fr 320px; gap: 56px; align-items: center; margin-bottom: 60px; }
.product-info p { color: #4a5060; font-size: 16px; margin-bottom: 16px; }
.tag-list { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 24px 0 0; }
.tag-list li {
  font-size: 13px; color: var(--brand-dark); background: var(--brand-soft);
  border: 1px solid #ffdcc4; border-radius: 999px; padding: 6px 14px;
}
.product-visual { display: flex; justify-content: center; }

.phone {
  width: 268px; height: 536px; border-radius: 40px;
  background: linear-gradient(160deg, #2b2f3a, #14161d);
  padding: 12px; box-shadow: 0 26px 50px rgba(20,22,29,0.28);
  position: relative;
}
.phone::before {
  content: ""; position: absolute; top: 16px; left: 50%; transform: translateX(-50%);
  width: 90px; height: 20px; background: #14161d; border-radius: 20px;
}
.phone-screen {
  background: linear-gradient(180deg, #fff6ea, #fff);
  border-radius: 30px; width: 100%; height: 100%;
  padding: 46px 12px 12px; position: relative; overflow: hidden;
  display: flex; flex-direction: column;
}
.screen-header { font-weight: 700; font-size: 14px; text-align: center; margin-bottom: 10px; color: var(--brand-dark); }
.banner-mock {
  background: linear-gradient(135deg, var(--brand), #f7b04b);
  color: #fff; border-radius: 12px; padding: 18px 12px; text-align: center;
  font-weight: 700; font-size: 14px; margin-bottom: 12px;
}
.cat-mock { display: flex; justify-content: space-between; margin-bottom: 12px; }
.cat-mock span {
  background: #fff; border: 1px solid var(--border); padding: 5px 9px;
  border-radius: 8px; font-size: 11px;
}
.hot-title { font-size: 12px; font-weight: 700; margin-bottom: 8px; }
.hot-list { display: grid; grid-template-columns: repeat(3,1fr); gap: 6px; }
.hot-card { background: #fff; border: 1px solid var(--border); border-radius: 9px; padding: 10px 4px; text-align: center; }
.hot-img { font-size: 22px; margin-bottom: 4px; }
.hot-price { font-size: 10px; color: var(--brand-dark); font-weight: 700; }
.phone-tab {
  margin-top: auto; padding: 9px 4px; text-align: center; background: #fff;
  border-top: 1px solid var(--border); margin: auto -12px -12px;
  font-size: 10px; color: var(--muted); letter-spacing: .05em;
}

.feat-grid { gap: 20px; }
.feat {
  background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 22px;
}
.feat-icon { font-size: 20px; display: block; margin-bottom: 10px; }
.feat h4 { font-size: 15.5px; margin-bottom: 6px; }
.feat p { color: var(--muted); font-size: 14px; line-height: 1.65; }

/* ---------- Screens ---------- */
.screens { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; align-items: end; }
.screen-item { display: flex; flex-direction: column; align-items: center; }
.mini-phone {
  width: 252px; background: #fff; border: 6px solid #14161d;
  border-radius: 30px; padding: 20px 16px;
  box-shadow: 0 18px 36px rgba(20,22,29,0.14);
}
.mini-title { font-weight: 800; font-size: 15px; margin-bottom: 12px; text-align: center; }
.mini-points { font-size: 13px; color: var(--muted); text-align: center; }
.mini-streak { font-size: 11.5px; color: var(--brand-dark); text-align: center; margin-bottom: 12px; font-weight: 700; }
.calendar { display: grid; grid-template-columns: repeat(7,1fr); gap: 4px; margin-bottom: 14px; }
.cal-day {
  height: 27px; border-radius: 6px; background: #f6f6f6;
  display: flex; align-items: center; justify-content: center; font-size: 11.5px;
}
.cal-day.off { background: transparent; color: var(--muted); font-size: 10.5px; }
.cal-day.done { background: #ffe6d1; color: var(--brand-dark); font-weight: 700; }
.cal-day.today { background: var(--brand); color: #fff; font-weight: 700; }
.mini-btn {
  background: var(--brand); color: #fff; text-align: center; padding: 10px;
  border-radius: 999px; font-weight: 700; font-size: 13px;
}
.prod-img { font-size: 72px; text-align: center; background: var(--brand-soft); border-radius: 12px; padding: 16px; margin-bottom: 12px; }
.prod-name { font-weight: 700; margin-bottom: 6px; font-size: 15px; }
.prod-points { color: var(--brand-dark); font-weight: 800; font-size: 16px; margin: 4px 0; }
.prod-sale { color: var(--muted); font-size: 11.5px; margin-bottom: 14px; }
.user-row { display: flex; align-items: center; gap: 12px; padding: 8px 0 12px; }
.avatar {
  width: 42px; height: 42px; border-radius: 50%; background: #ffe6d1;
  display: flex; align-items: center; justify-content: center; font-size: 20px;
}
.user-name { font-weight: 700; font-size: 14px; }
.user-phone { color: var(--muted); font-size: 11.5px; }
.asset-card {
  background: linear-gradient(135deg, var(--brand), #f7b04b);
  color: #fff; border-radius: 12px; padding: 14px; text-align: center; margin-bottom: 12px;
}
.asset-label { font-size: 11.5px; opacity: 0.92; }
.asset-value { font-size: 24px; font-weight: 800; }
.asset-money { font-size: 11.5px; opacity: 0.92; }
.menu-list > div { padding: 10px 8px; border-bottom: 1px solid var(--border); font-size: 13px; }
.menu-list > div:last-child { border-bottom: none; }
.screen-caption { margin-top: 14px; color: var(--muted); font-size: 13.5px; }

/* ---------- Flow ---------- */
.flow { display: flex; align-items: stretch; justify-content: space-between; gap: 12px; }
.flow-step {
  flex: 1; text-align: center; background: #fff; padding: 26px 18px;
  border: 1px solid var(--border); border-radius: 16px;
}
.flow-num {
  width: 40px; height: 40px; margin: 0 auto 14px;
  background: var(--brand); color: #fff; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 18px;
}
.flow-step h4 { font-size: 15.5px; margin-bottom: 6px; }
.flow-step p { color: var(--muted); font-size: 13.5px; line-height: 1.6; }
.flow-arrow { display: flex; align-items: center; color: #c9ced8; font-size: 20px; font-weight: 700; }

/* ---------- FAQ ---------- */
.faq { max-width: 820px; margin: 0 auto; }
.faq details {
  background: #fff; border: 1px solid var(--border); border-radius: 12px;
  padding: 18px 22px; margin-bottom: 12px; cursor: pointer;
}
.faq summary {
  list-style: none; font-weight: 600; font-size: 15.5px;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--brand); font-size: 20px; font-weight: 400; flex: none; }
.faq details[open] summary::after { content: "−"; }
.faq p { color: var(--muted); margin: 12px 0 0; font-size: 15px; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.25fr 0.75fr; gap: 32px; align-items: stretch; }
.contact-list {
  background: #fff; border: 1px solid var(--border); border-radius: 16px;
  margin: 0; padding: 10px 30px;
}
.contact-row {
  display: grid; grid-template-columns: 120px 1fr; gap: 20px;
  padding: 18px 0; border-bottom: 1px solid var(--border);
}
.contact-row:last-child { border-bottom: none; }
.contact-row dt { color: var(--muted); font-size: 14px; }
.contact-row dd { margin: 0; font-size: 15.5px; font-weight: 500; word-break: break-all; }
.contact-row dd a { color: var(--brand-dark); }
.contact-row dd a:hover { text-decoration: underline; }

.contact-card {
  background: #fff; border: 1px solid var(--border); border-radius: 16px;
  padding: 34px 30px; display: flex; flex-direction: column; align-items: flex-start; gap: 14px;
}
.contact-card h3 { font-size: 20px; }
.contact-card p { color: var(--muted); font-size: 14.5px; line-height: 1.75; margin-bottom: 6px; }
.contact-card .btn { width: 100%; }

/* ---------- Footer ---------- */
.footer { background: var(--footer-bg); color: #a9aebb; padding: 56px 0 26px; }
.footer-inner { display: grid; grid-template-columns: 1.1fr 1.9fr; gap: 48px; }
.footer .logo-text strong { color: #fff; font-size: 16px; }
.footer .logo-mark { width: 34px; height: 34px; font-size: 17px; border-radius: 10px; }
.footer-desc { color: #828795; margin-top: 14px; font-size: 13.5px; line-height: 1.9; }
.footer-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer-cols h5 { color: #fff; font-size: 14px; margin-bottom: 14px; font-weight: 600; }
.footer-cols a { display: block; padding: 4px 0; color: #a9aebb; font-size: 13.5px; transition: color .2s; }
.footer-cols a:hover { color: #fff; }
.footer-static { display: block; padding: 4px 0; color: #a9aebb; font-size: 13.5px; line-height: 1.7; overflow-wrap: break-word; }
.footer-copy {
  text-align: center; color: #6f7482; font-size: 13px;
  margin-top: 44px; padding-top: 22px; border-top: 1px solid #23262f;
}
.footer-copy p { margin: 2px 0; }
.footer-copy a { color: #8d93a1; }
.footer-copy a:hover { color: #fff; }

/* ---------- Reveal ---------- */
.reveal { transition: opacity .6s ease, transform .6s ease; }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 36px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .product-head { grid-template-columns: 1fr; gap: 36px; }
  .product-visual { order: -1; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 760px) {
  .nav-inner { min-height: 60px; gap: 12px; }
  .logo-text small { display: none; }
  .nav-links {
    gap: 16px; font-size: 13.5px; overflow-x: auto; flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch; scrollbar-width: none; padding: 4px 0;
  }
  .nav-links::-webkit-scrollbar { display: none; }
  .hero { padding: 56px 0 64px; }
  .hero h1 { font-size: 28px; }
  .lead { font-size: 15.5px; }
  .hero-panel { grid-template-columns: 1fr; padding: 18px; }
  .section { padding: 60px 0; }
  .section-title { font-size: 25px; }
  .about-text h2 { font-size: 25px; }
  .grid-4, .grid-3 { grid-template-columns: 1fr; }
  .screens { grid-template-columns: 1fr; gap: 32px; }
  .flow { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); justify-content: center; }
  .contact-row { grid-template-columns: 1fr; gap: 4px; padding: 14px 0; }
  .contact-list { padding: 8px 22px; }
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .phone { width: 240px; height: 480px; }
  .sub-title { margin-top: 48px; }
}