:root {
  --paper:#faf8f7; --paper2:#f3efe9; --paper3:#ede7dd; --white:#ffffff;
  --ink:#1c1a17; --ink2:#54514b; --ink3:#8b877e;
  --gold:#c9a84c; --goldtext:#9c7f2c; --golddeep:#8a6f22;
  --goldtint:rgba(201,168,76,.10);
  --hair:rgba(28,26,23,.10); --hairgold:rgba(201,168,76,.40);
  --serif:'Noto Serif SC',serif;
  --display:'Cormorant Garamond','Noto Serif SC',serif;
  --sans:'Noto Sans SC',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:var(--sans);font-weight:300;line-height:1.8;-webkit-font-smoothing:antialiased}
a{color:inherit}
.wrap{max-width:1080px;margin:0 auto;padding:0 40px}

/* ---------- Nav ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(250,248,247,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--hair)}
.nav-inner{max-width:1080px;margin:0 auto;padding:0 40px;height:72px;display:flex;align-items:center;justify-content:space-between}
.nav-brand{font-family:var(--serif);font-size:1.35rem;font-weight:700;letter-spacing:5px;text-decoration:none;color:var(--ink)}
.nav-brand span{color:var(--gold)}
.nav-right{display:flex;align-items:center;gap:30px}
.nav-link{font-size:.86rem;letter-spacing:1.5px;text-decoration:none;color:var(--ink2);transition:color .3s}
.nav-link:hover{color:var(--goldtext)}
.nav-cta{font-size:.84rem;letter-spacing:1.5px;text-decoration:none;color:var(--golddeep);border:1px solid var(--hairgold);padding:9px 24px;border-radius:2px;transition:all .3s}
.nav-cta:hover{background:var(--gold);color:#fff;border-color:var(--gold)}

/* ---------- Hero ---------- */
.hero{padding:170px 0 90px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-40%;right:-20%;width:70%;height:160%;background:radial-gradient(circle,rgba(201,168,76,.10) 0%,transparent 70%);pointer-events:none}
.crumb{display:inline-flex;align-items:center;gap:8px;font-size:.84rem;letter-spacing:1.5px;color:var(--ink3);text-decoration:none;transition:color .3s;margin-bottom:44px}
.crumb:hover{color:var(--goldtext)}
.crumb .arrow{font-family:var(--display);font-size:1.05rem}
.hero-tag{font-family:var(--display);font-size:.85rem;letter-spacing:5px;text-transform:uppercase;color:var(--goldtext);margin-bottom:20px;display:flex;align-items:center;gap:16px}
.hero-tag::before{content:'';width:44px;height:1px;background:var(--gold)}
.hero h1{font-family:var(--serif);font-size:3.3rem;font-weight:700;letter-spacing:3px;line-height:1.25;margin-bottom:26px}
.hero-tagline{font-family:var(--serif);font-size:1.25rem;font-weight:600;color:var(--golddeep);letter-spacing:1px;line-height:1.7;margin-bottom:24px;padding-left:18px;border-left:3px solid var(--gold)}
.hero-desc{font-size:1rem;color:var(--ink2);max-width:640px;line-height:2}
.hero-actions{display:flex;gap:18px;margin-top:44px;flex-wrap:wrap}
.btn-solid{display:inline-block;background:var(--gold);color:#fff;text-decoration:none;font-size:.9rem;letter-spacing:2px;padding:15px 40px;border-radius:2px;transition:all .3s;box-shadow:0 4px 16px rgba(201,168,76,.28)}
.btn-solid:hover{background:var(--golddeep);transform:translateY(-2px)}
.btn-ghost{display:inline-block;border:1px solid var(--hairgold);color:var(--golddeep);text-decoration:none;font-size:.9rem;letter-spacing:2px;padding:15px 40px;border-radius:2px;transition:all .3s}
.btn-ghost:hover{background:var(--goldtint)}

/* ---------- Sections ---------- */
.section{padding:90px 0}
.section.alt{background:var(--paper2)}
.sec-head{margin-bottom:56px}
.sec-tag{font-family:var(--display);font-size:.82rem;letter-spacing:4px;text-transform:uppercase;color:var(--goldtext);margin-bottom:14px}
.sec-title{font-family:var(--serif);font-size:2rem;font-weight:700;letter-spacing:2px;line-height:1.4}
.sec-title .gold{color:var(--gold)}

/* ---------- 痛点 editorial ---------- */
.pain-quote{font-family:var(--serif);font-size:1.3rem;font-weight:600;color:var(--ink);line-height:2;letter-spacing:.5px;position:relative;padding-left:34px;border-left:2px solid var(--gold)}
.pain-body{margin-top:30px;font-size:1rem;color:var(--ink2);line-height:2.1;max-width:760px}
.pain-body + .pain-body{margin-top:22px}

/* ---------- 功能卡片 ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.feat{background:var(--white);border:1px solid var(--hair);border-radius:4px;padding:34px 32px;position:relative;overflow:hidden;transition:all .35s cubic-bezier(.16,1,.3,1)}
.feat::before{content:'';position:absolute;top:0;left:0;width:0;height:2px;background:var(--gold);transition:width .4s cubic-bezier(.16,1,.3,1)}
.feat:hover{transform:translateY(-5px);box-shadow:0 14px 34px rgba(28,26,23,.08);border-color:var(--hairgold)}
.feat:hover::before{width:100%}
.feat-num{font-family:var(--display);font-size:1rem;letter-spacing:2px;color:var(--gold);margin-bottom:16px}
.feat h3{font-family:var(--serif);font-size:1.12rem;font-weight:600;letter-spacing:1px;margin-bottom:12px}
.feat p{font-size:.9rem;color:var(--ink2);line-height:1.9}

/* ---------- 适用客户 ---------- */
.audience{background:var(--white);border:1px solid var(--hairgold);border-radius:4px;padding:48px 52px;display:flex;gap:34px;align-items:flex-start;box-shadow:0 6px 24px rgba(201,168,76,.08)}
.audience-icon{font-family:var(--display);font-size:2.4rem;color:var(--gold);line-height:1;flex-shrink:0}
.audience h3{font-family:var(--serif);font-size:1.15rem;font-weight:600;letter-spacing:1px;margin-bottom:12px;color:var(--golddeep)}
.audience p{font-size:.98rem;color:var(--ink2);line-height:2}

/* ---------- CTA ---------- */
.cta{background:linear-gradient(160deg,var(--paper) 0%,var(--paper3) 100%);text-align:center;padding:100px 40px;position:relative;overflow:hidden}
.cta::before{content:'';position:absolute;bottom:-50%;left:50%;transform:translateX(-50%);width:80%;height:120%;background:radial-gradient(circle,rgba(201,168,76,.12) 0%,transparent 70%);pointer-events:none}
.cta .sec-tag{justify-content:center;display:flex}
.cta h2{font-family:var(--serif);font-size:2.3rem;font-weight:700;letter-spacing:3px;margin:16px 0 20px}
.cta h2 .gold{color:var(--gold)}
.cta p{color:var(--ink2);font-size:1rem;margin-bottom:40px}
.cta-contact{display:flex;justify-content:center;gap:64px;margin-top:60px;flex-wrap:wrap;position:relative}
.cta-contact-label{font-family:var(--display);font-size:.8rem;letter-spacing:3px;text-transform:uppercase;color:var(--goldtext);margin-bottom:8px}
.cta-contact-value{font-size:.95rem;color:var(--ink)}
.cta-contact-value a{text-decoration:none;color:var(--ink);transition:color .3s}
.cta-contact-value a:hover{color:var(--goldtext)}

/* ---------- Footer ---------- */
.footer{background:var(--white);border-top:1px solid var(--hair);padding:52px 40px;text-align:center}
.footer-brand{font-family:var(--serif);font-size:1.3rem;font-weight:700;letter-spacing:5px}
.footer-line{color:var(--ink3);font-size:.82rem;letter-spacing:1px;line-height:2;margin-top:10px}
.footer-line a{color:var(--ink3);text-decoration:none}
.footer-line a:hover{color:var(--goldtext)}
.footer-copy{color:var(--ink3);font-size:.78rem;letter-spacing:1px;margin-top:26px;padding-top:22px;border-top:1px solid var(--hair);max-width:1000px;margin-left:auto;margin-right:auto}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .9s cubic-bezier(.16,1,.3,1),transform .9s cubic-bezier(.16,1,.3,1)}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ---------- Responsive ---------- */
@media(max-width:820px){
  .wrap{padding:0 26px}
  .nav-inner{padding:0 26px}
  .nav-link{display:none}
  .hero{padding:140px 0 70px}
  .hero h1{font-size:2.2rem}
  .hero-tagline{font-size:1.08rem}
  .feat-grid{grid-template-columns:1fr}
  .audience{flex-direction:column;padding:36px 30px}
  .cta-contact{flex-direction:column;gap:28px}
  .section{padding:70px 0}
}