:root{
  --brand:#e8743b;
  --brand-deep:#c4551f;
  --brand-soft:#fbe3d3;
  --cream:#fdf8f2;
  --cream-2:#f7ecdf;
  --ink:#2d2622;
  --ink-2:#6b5f57;
  --line:#e8dccf;
  --accent:#3f7d6e;
  --white:#fffdfa;
  --radius-s:10px;
  --radius:18px;
  --radius-l:28px;
  --shadow:0 2px 4px rgba(45,38,34,.04),0 12px 28px rgba(45,38,34,.06);
  --shadow-l:0 4px 8px rgba(45,38,34,.05),0 24px 48px rgba(45,38,34,.10);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  color:var(--ink);
  background:var(--cream);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{line-height:1.25;margin:0;letter-spacing:-.01em}
p{margin:0}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
img,svg{display:block}
.wrap{width:min(1140px,calc(100% - 48px));margin-inline:auto}

.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:99;border-radius:0 0 var(--radius-s) 0}
.skip:focus{left:0}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:50;
  background:rgba(253,248,242,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:74px}
.brand{display:inline-flex;align-items:center;gap:11px}
.brand-mark{width:38px;height:38px;flex:none}
.brand-text{font-size:20px;font-weight:700;letter-spacing:.02em}
.nav{display:flex;align-items:center;gap:6px}
.nav a{
  font-size:15px;color:var(--ink-2);padding:9px 14px;border-radius:999px;
  transition:color .18s,background .18s;
}
.nav a:hover,.nav a:focus-visible{color:var(--ink);background:var(--cream-2)}
.nav .nav-cta{background:var(--ink);color:var(--white);font-weight:600;padding:10px 20px}
.nav .nav-cta:hover,.nav .nav-cta:focus-visible{background:var(--brand-deep);color:#fff}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:600;padding:13px 26px;border-radius:999px;
  border:1.5px solid transparent;transition:transform .18s,background .18s,color .18s,border-color .18s;
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(232,116,59,.28)}
.btn-primary:hover{background:var(--brand-deep)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-deep);background:#fff}
.btn-lg{padding:16px 34px;font-size:17px}

/* ---------- hero ---------- */
.hero{padding:76px 0 88px;overflow:hidden;position:relative}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--brand-deep);background:var(--brand-soft);
  padding:6px 14px;border-radius:999px;margin-bottom:22px;
}
.hero h1{font-size:clamp(38px,5.2vw,66px);font-weight:800;letter-spacing:-.03em}
.hero h1 em{font-style:normal;color:var(--brand);position:relative;white-space:nowrap}
.hero h1 em::after{
  content:"";position:absolute;left:0;right:0;bottom:.06em;height:.16em;
  background:var(--brand-soft);border-radius:999px;z-index:-1;
}
.lede{margin-top:24px;font-size:17.5px;color:var(--ink-2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.hero-meta li{
  font-size:13.5px;font-weight:600;color:var(--ink-2);
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 15px;
}

.hero-visual{position:relative;display:flex;justify-content:center}
.hero-blob{
  position:absolute;inset:auto -40px -30px auto;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,#ffe2cd,#f8c9a8 60%,transparent 72%);
  filter:blur(6px);z-index:0;
}
.phone{
  position:relative;z-index:1;width:min(330px,100%);
  background:#fff;border-radius:36px;padding:14px;
  box-shadow:var(--shadow-l);border:1px solid var(--line);
  transform:rotate(-2deg);
}
.phone-bar{display:flex;gap:5px;padding:4px 8px 12px}
.phone-bar span{width:7px;height:7px;border-radius:50%;background:var(--line)}
.phone-body{background:var(--cream);border-radius:26px;padding:22px 20px 26px}
.ph-label{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--ink-2);text-transform:uppercase}
.ph-word{font-size:52px;font-weight:800;letter-spacing:-.02em;margin-top:6px;line-height:1.05}
.ph-ipa{font-size:19px;color:var(--brand-deep);font-weight:600;margin-top:2px}
.ph-wave{display:flex;align-items:center;gap:4px;height:44px;margin:16px 0 18px}
.ph-wave i{flex:1;background:var(--brand);border-radius:999px;opacity:.85;animation:wv 1.4s ease-in-out infinite}
.ph-wave i:nth-child(1){height:26%}
.ph-wave i:nth-child(2){height:52%;animation-delay:.08s}
.ph-wave i:nth-child(3){height:80%;animation-delay:.16s}
.ph-wave i:nth-child(4){height:46%;animation-delay:.24s}
.ph-wave i:nth-child(5){height:96%;animation-delay:.32s}
.ph-wave i:nth-child(6){height:58%;animation-delay:.4s}
.ph-wave i:nth-child(7){height:74%;animation-delay:.48s}
.ph-wave i:nth-child(8){height:38%;animation-delay:.56s}
.ph-wave i:nth-child(9){height:56%;animation-delay:.64s}
@keyframes wv{0%,100%{transform:scaleY(.62)}50%{transform:scaleY(1)}}
.ph-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 14px;margin-top:10px}
.ph-card--soft{background:var(--brand-soft);border-color:transparent}
.ph-tag{font-size:11px;font-weight:700;letter-spacing:.08em;color:var(--brand-deep)}
.ph-card p{font-size:14px;margin-top:3px;color:var(--ink-2)}
.ph-card b{color:var(--ink)}

/* ---------- section shell ---------- */
.section{padding:88px 0}
.section--tint{background:var(--cream-2)}
.sec-head{max-width:44em;margin-bottom:52px}
.sec-kicker{font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--brand-deep);margin-bottom:14px}
.sec-kicker--light{color:#f6b48c}
.sec-head h2,.sync-copy h2{font-size:clamp(27px,3.4vw,40px);font-weight:800}
.mark{color:var(--brand-deep);box-shadow:inset 0 -.28em 0 var(--brand-soft)}
.sec-sub{margin-top:16px;color:var(--ink-2);font-size:16.5px}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 24px 26px;box-shadow:var(--shadow);position:relative;
  transition:transform .2s,box-shadow .2s;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-l)}
.step-no{font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--brand)}
.step h3{font-size:19px;margin:12px 0 10px}
.step p{font-size:14.5px;color:var(--ink-2)}

/* ---------- cards ---------- */
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;box-shadow:var(--shadow);
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-l);border-color:#f0c9ae}
.card-icon{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-deep);margin-bottom:18px;
}
.card-icon svg{width:28px;height:28px}
.card h3{font-size:20px;margin-bottom:10px}
.card p{font-size:15px;color:var(--ink-2)}

/* ---------- sync ---------- */
.sync-grid{display:grid;grid-template-columns:1fr .92fr;gap:60px;align-items:center}
.sync-copy p{margin-top:18px;color:var(--ink-2);font-size:16.5px}
.ticks{margin-top:26px;display:grid;gap:12px}
.ticks li{position:relative;padding-left:30px;font-size:15.5px;color:var(--ink)}
.ticks li::before{
  content:"";position:absolute;left:2px;top:.52em;width:13px;height:13px;border-radius:50%;
  background:var(--brand-soft);box-shadow:inset 0 0 0 3px var(--brand);
}
.link-arrow{
  display:inline-block;margin-top:30px;font-weight:700;color:var(--brand-deep);
  border-bottom:2px solid var(--brand-soft);padding-bottom:2px;transition:border-color .18s;
}
.link-arrow:hover{border-color:var(--brand)}
.sync-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-l);
  padding:26px;box-shadow:var(--shadow-l);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--ink-2);padding-bottom:16px;border-bottom:1px dashed var(--line)}
.panel-dot{width:9px;height:9px;border-radius:50%;background:var(--accent)}
.panel-list li{display:flex;gap:16px;align-items:baseline;padding:15px 0;border-bottom:1px dashed var(--line)}
.panel-list li:last-child{border-bottom:0}
.pl-unit{font-size:12.5px;font-weight:800;letter-spacing:.06em;color:var(--brand-deep);background:var(--brand-soft);border-radius:999px;padding:3px 11px;flex:none}
.pl-words{font-size:14.5px;color:var(--ink-2)}
.panel-note{font-size:12.5px;color:#a2938a;margin-top:8px}

/* ---------- dark design section ---------- */
.section--dark{background:#2d2622;color:#f4ece4;position:relative;overflow:hidden}
.section--dark::before{
  content:"";position:absolute;inset:-30% -10% auto auto;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(232,116,59,.32),transparent 68%);
}
.design-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;position:relative;z-index:1}
.light{font-size:clamp(26px,3.2vw,38px);font-weight:800;color:#fff8f2;margin-top:4px}
.mark-light{color:#f9b78f}
.design-list{display:grid;gap:2px;border-top:1px solid rgba(244,236,228,.16)}
.design-item{padding:22px 0;border-bottom:1px solid rgba(244,236,228,.16)}
.design-item h3{font-size:18px;color:#fff8f2;margin-bottom:6px}
.design-item p{font-size:15px;color:rgba(244,236,228,.72)}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:.72fr 1.28fr;gap:56px;align-items:start}
.sec-head--left{margin-bottom:0}
.faq{display:grid;gap:12px}
.faq details{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-s);
  padding:0 22px;box-shadow:var(--shadow);transition:border-color .18s;
}
.faq details[open]{border-color:#f0c9ae}
.faq summary{
  cursor:pointer;list-style:none;padding:18px 0;font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";width:11px;height:11px;flex:none;
  border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:rotate(45deg) translateY(-2px);transition:transform .2s;
}
.faq details[open] summary::after{transform:rotate(-135deg) translateY(-2px)}
.faq details p{padding:0 0 20px;font-size:15px;color:var(--ink-2);max-width:46em}

/* ---------- cta ---------- */
.cta{padding:0 0 96px}
.cta-inner{
  background:linear-gradient(115deg,#fbe3d3 0%,#fdf1e6 46%,#f7ecdf 100%);
  border:1px solid #f2d4bd;border-radius:var(--radius-l);
  padding:52px 56px;display:flex;align-items:center;justify-content:space-between;gap:40px;
  box-shadow:var(--shadow);
}
.cta-inner h2{font-size:clamp(24px,3vw,34px);font-weight:800;max-width:20em}
.cta-inner p{margin-top:12px;color:var(--ink-2);font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:none}
.cta-actions .btn-ghost{background:#fff;border-color:#f2d4bd}

/* ---------- footer ---------- */
.site-foot{background:#2d2622;color:rgba(244,236,228,.78);padding:64px 0 28px}
.foot-grid{display:grid;grid-template-columns:1.5fr .8fr .9fr .9fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(244,236,228,.14)}
.site-foot .brand-text{color:#fff8f2}
.foot-brand p{font-size:14.5px;margin-top:16px;max-width:26em;color:rgba(244,236,228,.66)}
.foot-col h3{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:#f6b48c;margin-bottom:14px}
.foot-col a,.foot-col p{display:block;font-size:14.5px;color:rgba(244,236,228,.72);margin-bottom:9px;transition:color .18s}
.foot-col a:hover{color:#fff8f2}
.foot-bottom{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-top:24px;font-size:13px;color:rgba(244,236,228,.5)}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .hero-grid,.sync-grid,.design-grid,.faq-wrap{grid-template-columns:1fr;gap:44px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:40px 32px}
}
@media (max-width:768px){
  .wrap{width:calc(100% - 36px)}
  .head-inner{height:auto;padding:14px 0;flex-direction:column;align-items:flex-start;gap:10px}
  .nav{width:100%;overflow-x:auto;gap:2px;padding-bottom:2px;-webkit-overflow-scrolling:touch}
  .nav a{white-space:nowrap;font-size:14px;padding:8px 12px}
  .hero{padding:44px 0 60px}
  .hero h1{font-size:clamp(32px,9vw,44px)}
  .lede{font-size:16px}
  .phone{transform:none;width:100%;max-width:340px}
  .hero-blob{display:none}
  .section{padding:60px 0}
  .sec-head{margin-bottom:34px}
  .steps,.cards{grid-template-columns:1fr}
  .cta{padding-bottom:64px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .foot-grid{grid-template-columns:1fr;gap:30px}
  .foot-bottom{flex-direction:column;gap:6px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}