/* SECTION: reset */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Songti SC","STSong","Noto Serif SC","SimSun","Source Han Serif SC",Georgia,serif;color:#2C2C2C;background:#F5F0E8;line-height:1.8;overflow-x:hidden}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
img{max-width:100%;display:block}

/* SECTION: variables */
:root{
  --ink:#2C2C2C;--ink-light:#5A5A5A;--ink-faint:#8A8A8A;
  --vermillion:#C41E3A;--vermillion-dark:#A01830;
  --gold:#C9A96E;--gold-light:#D4BA85;
  --paper:#F5F0E8;--paper-light:#FAF7F2;--paper-dark:#EDE5D8;
  --serif:-apple-system,BlinkMacSystemFont,"Segoe UI","Songti SC","STSong","Noto Serif SC","SimSun",Georgia,serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
}

/* SECTION: typography */
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.4}
.section-title{text-align:center;margin-bottom:60px;position:relative}
.section-title h2{font-size:2rem;letter-spacing:0.15em;display:inline-block;position:relative}
.section-title h2::before,.section-title h2::after{content:"";position:absolute;top:50%;width:60px;height:1px;background:linear-gradient(90deg,transparent,var(--gold),transparent)}
.section-title h2::before{right:calc(100% + 20px)}
.section-title h2::after{left:calc(100% + 20px)}
.section-title .subtitle{font-family:var(--sans);font-size:0.9rem;color:var(--ink-faint);margin-top:12px;letter-spacing:0.1em}

/* SECTION: decorative */
.seal-stamp{width:60px;height:60px;border:2px solid var(--vermillion);border-radius:4px;display:inline-flex;align-items:center;justify-content:center;color:var(--vermillion);font-size:0.75rem;writing-mode:vertical-rl;font-family:var(--serif);letter-spacing:0.2em;transform:rotate(5deg);opacity:0.8}
.cloud-divider{text-align:center;margin:20px 0;color:var(--gold);font-size:1.5rem;letter-spacing:1em;opacity:0.5}

/* SECTION: navigation */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:20px 40px;display:flex;align-items:center;justify-content:space-between;transition:all 0.4s ease}
.nav.scrolled{background:rgba(245,240,232,0.95);backdrop-filter:blur(10px);padding:14px 40px;box-shadow:0 2px 20px rgba(0,0,0,0.08)}
.nav-brand{display:flex;align-items:center;gap:12px}
.nav-brand .logo-text{font-size:1.3rem;font-weight:700;letter-spacing:0.15em;color:var(--ink)}
.nav-brand .logo-accent{color:var(--vermillion);font-size:0.8rem;font-family:var(--sans);letter-spacing:0.05em}
.nav-links{display:flex;gap:32px;align-items:center}
.nav-links a{font-family:var(--sans);font-size:0.9rem;color:var(--ink-light);transition:color 0.3s;position:relative;letter-spacing:0.05em}
.nav-links a:hover{color:var(--vermillion)}
.nav-links a::after{content:"";position:absolute;bottom:-4px;left:0;width:0;height:1px;background:var(--vermillion);transition:width 0.3s}
.nav-links a:hover::after{width:100%}
.nav-cta{font-family:var(--sans);font-size:0.85rem;padding:8px 24px;border:1px solid var(--vermillion);color:var(--vermillion);border-radius:2px;transition:all 0.3s;letter-spacing:0.1em}
.nav-cta:hover{background:var(--vermillion);color:#fff}
.mobile-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.mobile-toggle span{width:24px;height:2px;background:var(--ink);transition:all 0.3s}

/* SECTION: hero */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:0.35}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(245,240,232,0.3) 0%,rgba(245,240,232,0.1) 40%,rgba(245,240,232,0.6) 80%,rgba(245,240,232,1) 100%)}
.hero-content{position:relative;z-index:1;text-align:center;padding:0 20px;max-width:800px}
.hero-seal{margin:0 auto 40px}
.hero-classic{font-size:1rem;color:var(--ink-faint);letter-spacing:0.3em;margin-bottom:24px;font-style:italic}
.hero h1{font-size:3rem;letter-spacing:0.2em;margin-bottom:16px;line-height:1.5}
.hero h1 .accent{color:var(--vermillion);font-size:3.6rem}
.hero-desc{font-family:var(--sans);font-size:1.05rem;color:var(--ink-light);margin-bottom:16px;letter-spacing:0.08em;line-height:2}
.hero-tags{display:flex;justify-content:center;gap:24px;margin-bottom:48px;flex-wrap:wrap}
.hero-tags span{font-size:0.85rem;color:var(--ink-faint);letter-spacing:0.15em;position:relative}
.hero-tags span:not(:last-child)::after{content:"·";position:absolute;right:-16px;color:var(--gold)}
.hero-cta{display:inline-flex;align-items:center;gap:12px;padding:16px 48px;background:var(--vermillion);color:#fff;font-family:var(--serif);font-size:1.1rem;letter-spacing:0.2em;border:none;cursor:pointer;border-radius:2px;transition:all 0.3s;box-shadow:0 4px 20px rgba(196,30,58,0.3)}
.hero-cta:hover{background:var(--vermillion-dark);transform:translateY(-2px);box-shadow:0 6px 28px rgba(196,30,58,0.4)}
.hero-scroll{position:absolute;bottom:40px;left:50%;transform:translateX(-50%);z-index:1;display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--ink-faint);font-size:0.75rem;letter-spacing:0.1em;font-family:var(--sans)}
.hero-scroll .arrow{width:1px;height:40px;background:linear-gradient(180deg,var(--gold),transparent);animation:scrollDown 2s ease-in-out infinite}
@keyframes scrollDown{0%,100%{opacity:0.3;transform:scaleY(0.6)}50%{opacity:1;transform:scaleY(1)}}

/* SECTION: intro */
.intro{padding:100px 40px;max-width:900px;margin:0 auto;text-align:center}
.intro-quote{font-size:1.3rem;letter-spacing:0.15em;line-height:2;margin-bottom:32px;color:var(--ink);position:relative;padding:0 40px}
.intro-quote::before,.intro-quote::after{font-size:3rem;color:var(--gold);opacity:0.4;position:absolute;font-family:Georgia,serif}
.intro-quote::before{content:"\201C";top:-20px;left:0}
.intro-quote::after{content:"\201D";bottom:-30px;right:0}
.intro-text{font-family:var(--sans);font-size:0.95rem;color:var(--ink-light);line-height:2.2;max-width:700px;margin:0 auto;letter-spacing:0.03em}

/* SECTION: principles */
.principles{padding:100px 40px;background:var(--paper-light)}
.principles-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:40px}
.principle-card{background:#fff;padding:48px 36px;text-align:center;border-radius:4px;box-shadow:0 4px 24px rgba(0,0,0,0.04);transition:all 0.4s;position:relative;overflow:hidden}
.principle-card::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:40px;height:3px;background:var(--vermillion)}
.principle-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(0,0,0,0.08)}
.principle-icon{width:72px;height:72px;margin:0 auto 24px;border:1px solid var(--gold);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.8rem;color:var(--vermillion);background:linear-gradient(135deg,rgba(201,169,110,0.08),rgba(196,30,58,0.05))}
.principle-card h3{font-size:1.3rem;letter-spacing:0.15em;margin-bottom:16px}
.principle-card p{font-family:var(--sans);font-size:0.88rem;color:var(--ink-light);line-height:2}

/* SECTION: process */
.process{padding:100px 40px}
.process-steps{max-width:900px;margin:0 auto;position:relative}
.process-steps::before{content:"";position:absolute;top:0;bottom:0;left:50%;width:1px;background:linear-gradient(180deg,transparent,var(--gold),var(--gold),transparent)}
.step{display:flex;align-items:flex-start;gap:40px;margin-bottom:60px;position:relative}
.step:nth-child(even){flex-direction:row-reverse}
.step-num{flex-shrink:0;width:56px;height:56px;border-radius:50%;background:var(--paper);border:2px solid var(--gold);display:flex;align-items:center;justify-content:center;font-size:1.2rem;color:var(--vermillion);font-weight:700;position:relative;z-index:1}
.step-content{flex:1;max-width:calc(50% - 68px)}
.step:nth-child(odd) .step-content{text-align:right}
.step-content h3{font-size:1.15rem;letter-spacing:0.1em;margin-bottom:8px}
.step-content p{font-family:var(--sans);font-size:0.88rem;color:var(--ink-light);line-height:1.9}

/* SECTION: services */
.services{padding:100px 40px;background:var(--paper-light)}
.services-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(2,1fr);gap:32px}
.service-card{display:flex;align-items:center;gap:28px;padding:36px;background:#fff;border-radius:4px;border:1px solid rgba(201,169,110,0.2);transition:all 0.3s}
.service-card:hover{border-color:var(--gold);box-shadow:0 8px 30px rgba(0,0,0,0.06)}
.service-icon{flex-shrink:0;width:64px;height:64px;border-radius:4px;background:linear-gradient(135deg,var(--vermillion),var(--vermillion-dark));display:flex;align-items:center;justify-content:center;font-size:1.6rem;color:#fff}
.service-card h3{font-size:1.1rem;letter-spacing:0.1em;margin-bottom:6px}
.service-card p{font-family:var(--sans);font-size:0.85rem;color:var(--ink-faint);line-height:1.8}

/* SECTION: testimonials */
.testimonials{padding:100px 40px}
.testimonials-grid{max-width:1000px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.testimonial-card{background:var(--paper-light);padding:36px;border-radius:4px;border-left:3px solid var(--gold);position:relative}
.testimonial-card::before{content:"\201C";position:absolute;top:12px;right:20px;font-size:3rem;color:var(--gold);opacity:0.3;font-family:Georgia,serif}
.testimonial-text{font-family:var(--sans);font-size:0.9rem;color:var(--ink-light);line-height:2;margin-bottom:20px}
.testimonial-author{display:flex;align-items:center;gap:12px}
.testimonial-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--gold-light),var(--gold));display:flex;align-items:center;justify-content:center;color:#fff;font-size:0.9rem;font-weight:600}
.testimonial-info .name{font-size:0.9rem;font-weight:600;letter-spacing:0.05em}
.testimonial-info .desc{font-family:var(--sans);font-size:0.75rem;color:var(--ink-faint)}

/* SECTION: cta */
.cta-section{padding:100px 40px;text-align:center;background:linear-gradient(180deg,var(--paper),var(--paper-dark));position:relative;overflow:hidden}
.cta-section::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--gold),transparent)}
.cta-text{font-size:1.6rem;letter-spacing:0.2em;margin-bottom:12px;color:var(--ink)}
.cta-sub{font-family:var(--sans);font-size:0.95rem;color:var(--ink-faint);margin-bottom:40px;letter-spacing:0.08em}
.cta-btn{display:inline-flex;align-items:center;gap:12px;padding:16px 56px;background:var(--vermillion);color:#fff;font-family:var(--serif);font-size:1.1rem;letter-spacing:0.2em;border:none;cursor:pointer;border-radius:2px;transition:all 0.3s;box-shadow:0 4px 20px rgba(196,30,58,0.25)}
.cta-btn:hover{background:var(--vermillion-dark);transform:translateY(-2px);box-shadow:0 6px 28px rgba(196,30,58,0.35)}

/* SECTION: footer */
.footer{padding:48px 40px 32px;background:var(--ink);color:rgba(255,255,255,0.5);text-align:center}
.footer-brand{font-size:1.1rem;color:rgba(255,255,255,0.8);letter-spacing:0.15em;margin-bottom:8px}
.footer-links{display:flex;justify-content:center;gap:24px;margin:16px 0;font-family:var(--sans);font-size:0.8rem}
.footer-links a{transition:color 0.3s}
.footer-links a:hover{color:var(--gold-light)}
.footer-copy{font-family:var(--sans);font-size:0.75rem;margin-top:16px;letter-spacing:0.05em}

/* SECTION: animations */
.fade-in{opacity:0;transform:translateY(30px);transition:opacity 0.8s ease,transform 0.8s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}
.fade-in-delay-1{transition-delay:0.15s}
.fade-in-delay-2{transition-delay:0.3s}
.fade-in-delay-3{transition-delay:0.45s}

/* SECTION: responsive */
@media(max-width:900px){
  .nav-links{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(245,240,232,0.98);flex-direction:column;align-items:center;justify-content:center;gap:28px;z-index:99}
  .nav-links.open{display:flex}
  .nav-links a{font-size:1.1rem}
  .mobile-toggle{display:flex;z-index:100}
  .hero h1{font-size:2rem}
  .hero h1 .accent{font-size:2.4rem}
  .hero-classic{font-size:0.85rem}
  .principles-grid{grid-template-columns:1fr;max-width:500px}
  .process-steps::before{left:28px}
  .step,.step:nth-child(even){flex-direction:row;gap:20px}
  .step-content,.step:nth-child(odd) .step-content{max-width:none;text-align:left}
  .step-num{width:48px;height:48px;font-size:1rem}
  .services-grid{grid-template-columns:1fr;max-width:500px;margin:0 auto}
  .testimonials-grid{grid-template-columns:1fr;max-width:500px}
  .section-title h2{font-size:1.5rem}
  .section-title h2::before,.section-title h2::after{width:30px}
  .intro-quote{font-size:1.1rem;padding:0 20px}
  .nav{padding:16px 20px}
  .nav.scrolled{padding:12px 20px}
  .intro,.principles,.process,.services,.testimonials,.cta-section{padding:70px 20px}
}

@media(max-width:480px){
  .hero h1{font-size:1.6rem;letter-spacing:0.1em}
  .hero h1 .accent{font-size:1.9rem}
  .hero-tags{gap:12px}
  .hero-cta,.cta-btn{padding:14px 36px;font-size:1rem}
  .service-card{flex-direction:column;text-align:center;gap:16px}
  .footer-links{flex-wrap:wrap;gap:16px}
}