/* =====================================================
   LECUES · 乐库斯  |  Design System
   国际高端品牌官网 · 主样式表
   v1.0 · 2026
   ===================================================== */

/* ---------- 1. CSS Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{min-height:100vh;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
img,picture,svg,video{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
table{border-collapse:collapse;border-spacing:0}

/* ---------- 2. Design Tokens ---------- */
:root{
  /* Brand Colors */
  --ink:        #0A0A0A;   /* 哑光黑 */
  --ink-2:      #141414;
  --ink-3:      #1C1C1C;
  --ink-4:      #2A2A2A;
  --gold:       #C9A96E;   /* 香槟金 */
  --gold-2:     #D4B97A;   /* 暖金 */
  --gold-3:     #8C7649;   /* 暗金 */
  --gold-4:     #5A4A2E;
  --cream:      #F5F2EC;   /* 米白 */
  --cream-2:    #FAF7F1;
  --paper:      #FFFFFF;
  --cue-red:    #D7282F;   /* 主球红 */
  --cue-red-2:  #B51E25;
  --felt:       #0F3A2E;   /* 球台呢绿 */
  --felt-2:     #0C2E23;
  --smoke:      #6E6E6E;
  --smoke-2:    #8A8A8A;
  --line:       rgba(201,169,110,0.18);
  --line-dim:   rgba(201,169,110,0.10);
  --line-bright:rgba(201,169,110,0.40);

  /* Typography */
  --font-latin: "Inter", "Helvetica Neue", "Montserrat", "Segoe UI", Arial, sans-serif;
  --font-cn:    "PingFang SC", "Source Han Sans CN", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-serif: "Cormorant Garamond", "Playfair Display", "Times New Roman", Georgia, serif;

  /* Spacing */
  --gutter: clamp(20px, 4vw, 48px);
  --section-pad: clamp(72px, 10vw, 140px);
  --container: 1280px;
  --container-narrow: 980px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
  --t-fast: 220ms;
  --t-med: 420ms;
  --t-slow: 720ms;
}

/* ---------- 3. Base Typography ---------- */
html{font-size:16px}
body{
  font-family:var(--font-cn), var(--font-latin);
  font-weight:300;
  line-height:1.7;
  color:var(--cream);
  background:var(--ink);
  letter-spacing:0.02em;
  overflow-x:hidden;
}

.latin{font-family:var(--font-latin)}
.serif{font-family:var(--font-serif);font-weight:300}
.mono{font-family:"SF Mono","Courier New",monospace}

h1,h2,h3,h4,h5,h6{font-weight:300;line-height:1.2;letter-spacing:0.04em}
h1{font-size:clamp(40px, 6vw, 88px)}
h2{font-size:clamp(30px, 4vw, 54px);letter-spacing:0.05em}
h3{font-size:clamp(22px, 2.6vw, 32px)}
h4{font-size:clamp(18px, 1.8vw, 22px)}
p{margin:0}

/* ---------- 4. Layout ---------- */
.wrap{
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--gutter);
}
.wrap--narrow{max-width:var(--container-narrow)}
section{padding:var(--section-pad) 0;position:relative}

.eyebrow{
  display:inline-flex;align-items:center;gap:14px;
  font-family:var(--font-latin);
  font-size:11px;
  letter-spacing:0.4em;
  color:var(--gold);
  text-transform:uppercase;
  font-weight:500;
  margin-bottom:24px;
}
.eyebrow::before{
  content:"";width:32px;height:1px;background:var(--gold);
  display:inline-block;
}

.section-head{margin-bottom:64px}
.section-head .title{margin-top:6px}
.section-head .sub{
  color:var(--smoke-2);
  font-size:13px;
  letter-spacing:0.25em;
  text-transform:uppercase;
  margin-top:14px;
}

.divider{
  height:1px;
  background:linear-gradient(90deg, transparent, var(--line), transparent);
  margin:0;
}
.divider--solid{background:var(--line-dim)}

/* ---------- 5. Buttons & Links ---------- */
.btn{
  display:inline-flex;align-items:center;gap:14px;
  padding:18px 36px;
  font-family:var(--font-latin);
  font-size:12px;letter-spacing:0.32em;
  text-transform:uppercase;
  color:var(--ink);
  background:var(--gold);
  border:1px solid var(--gold);
  border-radius:0;
  position:relative;
  overflow:hidden;
  transition:all var(--t-med) var(--ease);
  font-weight:500;
  cursor:pointer;
}
.btn::after{
  content:"";position:absolute;inset:0;
  background:var(--ink);
  transform:translateX(-101%);
  transition:transform var(--t-med) var(--ease);
  z-index:0;
}
.btn span,.btn .arrow{position:relative;z-index:1}
.btn:hover{color:var(--gold)}
.btn:hover::after{transform:translateX(0)}

.btn--ghost{
  background:transparent;color:var(--cream);border-color:var(--line-bright);
}
.btn--ghost::after{background:var(--gold)}
.btn--ghost:hover{color:var(--ink);border-color:var(--gold)}

.btn--text{
  padding:0;color:var(--gold);
  font-family:var(--font-latin);
  font-size:12px;letter-spacing:0.32em;
  text-transform:uppercase;
  border:none;background:none;
  display:inline-flex;align-items:center;gap:10px;
  position:relative;cursor:pointer;
}
.btn--text::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;
  height:1px;background:var(--gold);
  transform:scaleX(1);transform-origin:left;
  transition:transform var(--t-med) var(--ease);
}
.btn--text:hover::after{transform:scaleX(0);transform-origin:right}
.btn--text .arrow{
  display:inline-block;transition:transform var(--t-med) var(--ease);
}
.btn--text:hover .arrow{transform:translateX(6px)}

/* ---------- 6. Header / Navigation ---------- */
.header{
  position:fixed;top:0;left:0;right:0;
  z-index:100;
  padding:22px 0;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:all var(--t-med) var(--ease);
}
.header.is-scrolled{
  background:rgba(10,10,10,0.92);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-bottom-color:var(--line);
  padding:14px 0;
}
.header__inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;
}
.header__logo{
  display:flex;align-items:center;gap:14px;
  flex-shrink:0;
}
.header__logo img{height:32px;width:auto}
.header__logo .wordmark{
  font-family:var(--font-latin);
  font-size:18px;letter-spacing:0.4em;
  color:var(--gold);font-weight:300;
}
.header__logo .sub{
  font-size:10px;letter-spacing:0.3em;
  color:var(--smoke-2);text-transform:uppercase;
  display:none;
}
@media(min-width:900px){
  .header__logo .sub{display:inline}
}
.nav{display:none;align-items:center;gap:36px}
@media(min-width:1024px){.nav{display:flex}}
.nav a{
  font-family:var(--font-latin);
  font-size:12px;letter-spacing:0.28em;
  text-transform:uppercase;
  color:var(--cream);
  position:relative;padding:8px 0;
  transition:color var(--t-fast) var(--ease);
}
.nav a::after{
  content:"";position:absolute;left:50%;bottom:0;
  width:0;height:1px;background:var(--gold);
  transition:all var(--t-med) var(--ease);
  transform:translateX(-50%);
}
.nav a:hover,.nav a.is-active{color:var(--gold)}
.nav a:hover::after,.nav a.is-active::after{width:100%}

.header__cta{
  display:none;
}
@media(min-width:768px){.header__cta{display:inline-flex}}

/* Mobile menu */
.menu-toggle{
  width:40px;height:40px;
  display:none;align-items:center;justify-content:center;
  position:relative;z-index:110;
}
@media(max-width:1023px){.menu-toggle{display:flex}}
.menu-toggle span{
  position:absolute;width:22px;height:1px;background:var(--gold);
  transition:all var(--t-med) var(--ease);
}
.menu-toggle span:nth-child(1){transform:translateY(-6px)}
.menu-toggle span:nth-child(2){transform:translateY(0)}
.menu-toggle span:nth-child(3){transform:translateY(6px)}
.menu-toggle.is-open span:nth-child(1){transform:translateY(0) rotate(45deg)}
.menu-toggle.is-open span:nth-child(2){opacity:0}
.menu-toggle.is-open span:nth-child(3){transform:translateY(0) rotate(-45deg)}

.mobile-menu{
  position:fixed;inset:0;
  background:var(--ink);
  z-index:99;
  display:flex;flex-direction:column;justify-content:center;align-items:center;
  padding:80px var(--gutter);
  opacity:0;visibility:hidden;
  transition:all var(--t-med) var(--ease);
}
.mobile-menu.is-open{opacity:1;visibility:visible}
.mobile-menu ul{display:flex;flex-direction:column;gap:24px;text-align:center}
.mobile-menu a{
  font-family:var(--font-latin);
  font-size:18px;letter-spacing:0.32em;
  text-transform:uppercase;color:var(--cream);
}
.mobile-menu a:hover{color:var(--gold)}
.mobile-menu .mob-foot{
  position:absolute;bottom:48px;left:0;right:0;
  text-align:center;font-size:11px;letter-spacing:0.3em;
  color:var(--smoke-2);text-transform:uppercase;
}

/* ---------- 7. Hero ---------- */
.hero{
  position:relative;
  min-height:100vh;min-height:100svh;
  display:flex;align-items:center;justify-content:center;
  background:var(--ink);
  overflow:hidden;
  padding:120px 0 80px;
}
.hero__bg{
  position:absolute;inset:0;
  background:
    radial-gradient(ellipse at 50% 30%, rgba(201,169,110,0.18), transparent 60%),
    radial-gradient(ellipse at 80% 80%, rgba(15,58,46,0.4), transparent 50%),
    var(--ink);
  z-index:0;
}
.hero__bg::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(201,169,110,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201,169,110,0.04) 1px, transparent 1px);
  background-size:80px 80px;
  mask-image:radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse at center, black 30%, transparent 75%);
  opacity:0.5;
}
.hero__bg::after{
  content:"";position:absolute;left:50%;top:50%;
  width:600px;height:600px;
  transform:translate(-50%,-50%);
  background:radial-gradient(circle, rgba(201,169,110,0.10) 0%, transparent 50%);
  filter:blur(40px);
}
.hero__inner{
  position:relative;z-index:2;
  text-align:center;width:100%;
  max-width:920px;margin:0 auto;padding:0 var(--gutter);
}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:14px;
  font-size:11px;letter-spacing:0.4em;
  color:var(--gold);text-transform:uppercase;
  margin-bottom:32px;
  opacity:0;animation:heroIn 1s var(--ease) 0.2s forwards;
}
.hero__eyebrow::before,.hero__eyebrow::after{
  content:"";width:32px;height:1px;background:var(--gold);
}
.hero__title{
  font-family:var(--font-latin);
  font-size:clamp(56px, 11vw, 144px);
  letter-spacing:0.18em;
  color:var(--gold);
  font-weight:200;
  line-height:1;
  margin-bottom:14px;
  position:relative;
  opacity:0;animation:heroIn 1.2s var(--ease) 0.4s forwards;
}
.hero__title-cn{
  font-family:var(--font-cn);
  font-size:clamp(28px, 4vw, 44px);
  color:var(--cream);
  letter-spacing:0.6em;
  font-weight:300;
  margin-bottom:48px;
  padding-left:0.6em;
  opacity:0;animation:heroIn 1.2s var(--ease) 0.6s forwards;
}
.hero__tagline{
  display:inline-flex;flex-direction:column;align-items:center;gap:14px;
  margin-bottom:64px;
  opacity:0;animation:heroIn 1.2s var(--ease) 0.8s forwards;
}
.hero__tagline .en{
  font-family:var(--font-serif);
  font-style:italic;
  font-size:clamp(18px, 2vw, 24px);
  color:var(--cream-2);
  letter-spacing:0.18em;
}
.hero__tagline .cn{
  font-family:var(--font-cn);
  font-size:14px;
  color:var(--smoke-2);
  letter-spacing:0.4em;
}
.hero__cue{
  display:block;margin:48px auto 0;
  width:min(560px, 80vw);
  height:1px;position:relative;
  opacity:0;animation:heroIn 1.2s var(--ease) 1s forwards;
}
.hero__cue::before{
  content:"";position:absolute;left:0;right:0;top:0;
  height:1px;background:linear-gradient(90deg,transparent,var(--gold),transparent);
}
.hero__cue::after{
  content:"";position:absolute;left:50%;top:50%;
  transform:translate(-50%,-50%);
  width:14px;height:14px;border-radius:50%;
  background:var(--cue-red);
  box-shadow:0 0 24px rgba(215,40,47,0.5);
}
.hero__cta{
  display:flex;gap:20px;justify-content:center;flex-wrap:wrap;
  margin-top:56px;
  opacity:0;animation:heroIn 1.2s var(--ease) 1.2s forwards;
}
.hero__scroll{
  position:absolute;left:50%;bottom:32px;
  transform:translateX(-50%);
  font-size:10px;letter-spacing:0.4em;
  color:var(--smoke-2);text-transform:uppercase;
  display:flex;flex-direction:column;align-items:center;gap:10px;
  opacity:0;animation:heroIn 1.2s var(--ease) 1.4s forwards;
}
.hero__scroll::after{
  content:"";width:1px;height:40px;background:linear-gradient(to bottom, var(--gold), transparent);
  animation:scrollLine 2.4s var(--ease) infinite;
}
@keyframes heroIn{
  from{opacity:0;transform:translateY(30px)}
  to{opacity:1;transform:translateY(0)}
}
@keyframes scrollLine{
  0%{transform:scaleY(0);transform-origin:top}
  50%{transform:scaleY(1);transform-origin:top}
  51%{transform:scaleY(1);transform-origin:bottom}
  100%{transform:scaleY(0);transform-origin:bottom}
}

/* ---------- 8. Footer ---------- */
.footer{
  background:var(--ink-2);
  border-top:1px solid var(--line);
  padding:96px 0 32px;
  position:relative;
}
.footer__top{
  display:grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap:64px;
  margin-bottom:64px;
}
@media(max-width:900px){
  .footer__top{grid-template-columns:1fr 1fr;gap:40px}
}
@media(max-width:560px){
  .footer__top{grid-template-columns:1fr;gap:32px}
}
.footer__brand .logo{
  font-family:var(--font-latin);
  font-size:24px;letter-spacing:0.4em;
  color:var(--gold);font-weight:300;
  margin-bottom:20px;
}
.footer__brand p{
  color:var(--smoke-2);font-size:13px;
  max-width:340px;line-height:1.9;
  letter-spacing:0.04em;
}
.footer__col h4{
  font-size:11px;letter-spacing:0.4em;
  color:var(--gold);text-transform:uppercase;
  font-weight:500;margin-bottom:24px;
  font-family:var(--font-latin);
}
.footer__col ul li{margin-bottom:14px}
.footer__col a{
  color:var(--cream-2);font-size:13px;
  letter-spacing:0.06em;
  transition:color var(--t-fast) var(--ease);
}
.footer__col a:hover{color:var(--gold)}
.footer__bottom{
  display:flex;justify-content:space-between;align-items:center;
  padding-top:32px;
  border-top:1px solid var(--line-dim);
  font-size:11px;letter-spacing:0.3em;
  color:var(--smoke-2);text-transform:uppercase;
  flex-wrap:wrap;gap:20px;
}
.footer__bottom .accent{color:var(--gold)}
.footer__social{display:flex;gap:16px}
.footer__social a{
  width:36px;height:36px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
  transition:all var(--t-fast) var(--ease);
}
.footer__social a:hover{border-color:var(--gold);color:var(--gold)}

/* ---------- 9. Page Hero (smaller than home) ---------- */
.page-hero{
  padding:200px 0 100px;
  background:radial-gradient(ellipse at 50% 30%, rgba(201,169,110,0.10), transparent 60%), var(--ink);
  border-bottom:1px solid var(--line);
  text-align:center;
  position:relative;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(201,169,110,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201,169,110,0.03) 1px, transparent 1px);
  background-size:64px 64px;
  opacity:0.4;pointer-events:none;
}
.page-hero__inner{position:relative;z-index:1}
.page-hero h1{
  font-family:var(--font-latin);
  font-size:clamp(40px, 7vw, 88px);
  letter-spacing:0.16em;
  color:var(--gold);
  font-weight:200;
  margin-bottom:18px;
}
.page-hero .cn{
  font-size:clamp(20px, 2.6vw, 32px);
  color:var(--cream);
  letter-spacing:0.5em;
  margin-bottom:32px;
  font-weight:300;
}
.page-hero p{
  max-width:680px;margin:0 auto;
  font-size:16px;line-height:1.9;
  color:var(--smoke-2);
  letter-spacing:0.04em;
}

/* ---------- 10. Common Components ---------- */
.kicker{
  display:inline-block;
  font-family:var(--font-latin);
  font-size:11px;letter-spacing:0.4em;
  color:var(--cue-red);text-transform:uppercase;
  font-weight:600;margin-bottom:20px;
}

.card{
  background:var(--ink-2);
  border:1px solid var(--line);
  padding:32px;
  transition:all var(--t-med) var(--ease);
  position:relative;
  overflow:hidden;
}
.card:hover{border-color:var(--line-bright);transform:translateY(-4px)}
.card::before{
  content:"";position:absolute;left:0;top:0;width:0;height:1px;
  background:var(--gold);
  transition:width var(--t-slow) var(--ease);
}
.card:hover::before{width:100%}

/* Numbers / Stats */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  padding:48px 0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
@media(max-width:768px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{text-align:center;padding:24px 12px}
.stat .num{
  font-family:var(--font-latin);
  font-size:clamp(36px, 4vw, 56px);
  font-weight:200;color:var(--gold);
  letter-spacing:0.04em;line-height:1;
  margin-bottom:14px;
}
.stat .lbl{
  font-size:11px;letter-spacing:0.32em;
  color:var(--smoke-2);text-transform:uppercase;
}

/* Reveal animation */
.reveal{opacity:0;transform:translateY(40px);transition:all 1s var(--ease)}
.reveal.is-in{opacity:1;transform:translateY(0)}
.reveal--left{transform:translateX(-40px)}
.reveal--left.is-in{transform:translateX(0)}
.reveal--right{transform:translateX(40px)}
.reveal--right.is-in{transform:translateX(0)}
.reveal--zoom{transform:scale(0.92)}
.reveal--zoom.is-in{transform:scale(1)}

/* Marquee */
.marquee{
  display:flex;overflow:hidden;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:24px 0;
  position:relative;
}
.marquee__track{
  display:flex;gap:80px;
  animation:marquee 36s linear infinite;
  white-space:nowrap;
  align-items:center;
}
.marquee__item{
  display:inline-flex;align-items:center;gap:24px;
  font-family:var(--font-latin);
  font-size:13px;letter-spacing:0.32em;
  text-transform:uppercase;color:var(--smoke-2);
  flex-shrink:0;
}
.marquee__item::after{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--gold);flex-shrink:0;
}
@keyframes marquee{
  from{transform:translateX(0)}
  to{transform:translateX(-50%)}
}

/* Tag chip */
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  font-size:10px;letter-spacing:0.3em;
  text-transform:uppercase;
  color:var(--gold);
  border:1px solid var(--line-bright);
  border-radius:99px;
}
.chip--filled{background:rgba(201,169,110,0.10);color:var(--gold-2)}

/* Two-col layout */
.two-col{
  display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center;
}
@media(max-width:900px){.two-col{grid-template-columns:1fr;gap:48px}}
.two-col--wide{display:grid;grid-template-columns:1.2fr 1fr;gap:100px;align-items:start}
@media(max-width:900px){.two-col--wide{grid-template-columns:1fr;gap:48px}}

/* Gallery */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:768px){.gallery{grid-template-columns:repeat(2,1fr)}}
.gallery__item{
  aspect-ratio:1/1;
  background:var(--ink-2);
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-dim);
}
.gallery__item img{
  width:100%;height:100%;object-fit:cover;
  transition:transform var(--t-slow) var(--ease);
}
.gallery__item:hover img{transform:scale(1.05)}
.gallery__item .caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:16px;background:linear-gradient(to top, rgba(0,0,0,0.85), transparent);
  font-size:11px;letter-spacing:0.28em;
  text-transform:uppercase;color:var(--cream);
  transform:translateY(100%);
  transition:transform var(--t-med) var(--ease);
}
.gallery__item:hover .caption{transform:translateY(0)}

/* Selection color */
::selection{background:var(--gold);color:var(--ink)}

/* Scrollbar */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:var(--ink-2)}
::-webkit-scrollbar-thumb{background:var(--ink-4);border-radius:0}
::-webkit-scrollbar-thumb:hover{background:var(--gold-3)}

/* Focus */
:focus-visible{outline:1px solid var(--gold);outline-offset:3px}