/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px;scroll-padding-top:70px}
body{font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;background:#0a0a1a;color:#e8e6f0;line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img,video{max-width:100%;display:block}
ul{list-style:none}

/* ===== Scrollbar ===== */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:#0a0a1a}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#d4a845,#8b6914);border-radius:3px}

/* ===== Variables ===== */
:root{
  --gold:#d4a845;
  --gold-light:#f0d878;
  --gold-dark:#8b6914;
  --blue-deep:#0a0a2e;
  --blue-mid:#1a1a4e;
  --card-bg:rgba(20,20,60,0.85);
  --card-border:rgba(212,168,69,0.25);
}

/* ===== Keyframes ===== */
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
@keyframes glow{0%,100%{box-shadow:0 0 20px rgba(212,168,69,.3)}50%{box-shadow:0 0 40px rgba(212,168,69,.7),0 0 80px rgba(212,168,69,.3)}}
@keyframes shimmer{0%{background-position:-200% center}100%{background-position:200% center}}
@keyframes fadeInUp{from{opacity:0;transform:translateY(40px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.05)}}
@keyframes slideInLeft{from{opacity:0;transform:translateX(-40px)}to{opacity:1;transform:translateX(0)}}
@keyframes slideInRight{from{opacity:0;transform:translateX(40px)}to{opacity:1;transform:translateX(0)}}
@keyframes countPulse{0%,100%{transform:scale(1)}50%{transform:scale(1.08)}}
@keyframes rotate{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}

/* ===== Nav ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:transparent;backdrop-filter:none;-webkit-backdrop-filter:none;border-bottom:1px solid transparent;transition:all .4s}
.nav.scrolled{background:rgba(10,10,30,.94);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(212,168,69,.15)}
.nav-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:64px}
.nav-logo{font-size:1.1rem;font-weight:800;background:linear-gradient(135deg,var(--gold-light),var(--gold));-webkit-background-clip:text;-webkit-text-fill-color:transparent;white-space:nowrap;letter-spacing:1px;display:flex;align-items:center;gap:10px}
.nav-logo-icon{width:36px;height:36px;border-radius:8px;flex-shrink:0}
.nav-links{display:flex;gap:32px;align-items:center}
.nav-links a{font-size:.9rem;color:#c8c4dd;transition:color .25s;position:relative;letter-spacing:.5px}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:50%;transform:translateX(-50%) scaleX(0);width:100%;height:2px;background:var(--gold);transition:transform .3s}
.nav-links a:hover{color:var(--gold-light)}
.nav-links a:hover::after{transform:translateX(-50%) scaleX(1)}
.nav-cta{background:linear-gradient(135deg,var(--gold-dark),var(--gold));color:#0a0a1a;padding:8px 22px;border-radius:24px;font-weight:700;font-size:.85rem;letter-spacing:1px;transition:all .3s}
.nav-cta:hover{background:linear-gradient(135deg,var(--gold),var(--gold-light));box-shadow:0 4px 20px rgba(212,168,69,.4)}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:4px;z-index:1001}
.nav-toggle span{display:block;width:26px;height:2px;background:var(--gold);border-radius:2px;transition:all .3s}
.nav-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* ===== Hero ===== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;overflow:hidden;background:linear-gradient(180deg,#06061a 0%,#0a0a2e 30%,#121240 60%,#0a0a1a 100%)}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at center,rgba(212,168,69,.08) 0%,transparent 70%);z-index:1}
.hero-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(0deg,#0a0a1a 0%,transparent 40%,transparent 70%,#0a0a1a 100%);z-index:2}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.75;filter:saturate(1.1)}
.hero-particles{position:absolute;inset:0;z-index:1;pointer-events:none}
.particle{position:absolute;width:3px;height:3px;background:var(--gold);border-radius:50%;animation:float 6s ease-in-out infinite;opacity:.5}
.hero-content{position:relative;z-index:3;text-align:center;padding:120px 24px 60px;max-width:900px}
.hero-badge{display:inline-block;background:linear-gradient(135deg,rgba(212,168,69,.15),rgba(240,216,120,.15));border:1px solid rgba(212,168,69,.3);border-radius:50px;padding:6px 20px;font-size:.8rem;color:var(--gold-light);letter-spacing:2px;margin-bottom:28px;animation:fadeInUp .8s ease-out}
.hero-title{font-size:clamp(2rem,5vw,3.6rem);font-weight:900;line-height:1.25;margin-bottom:16px;animation:fadeInUp .8s .1s ease-out both}
.hero-title .gold{background:linear-gradient(135deg,var(--gold-light),var(--gold),var(--gold-dark));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-size:200% auto;animation:shimmer 3s linear infinite}
.hero-subtitle{font-size:clamp(1rem,2vw,1.25rem);color:#a09cc4;margin-bottom:12px;animation:fadeInUp .8s .2s ease-out both}
.hero-version{display:inline-block;background:linear-gradient(135deg,#ff3b6e,#ff6b3b);color:#fff;font-size:.78rem;padding:4px 16px;border-radius:20px;font-weight:700;letter-spacing:1px;margin-bottom:36px;animation:fadeInUp .8s .3s ease-out both}
.hero-meta{display:flex;gap:28px;justify-content:center;flex-wrap:wrap;margin-bottom:40px;animation:fadeInUp .8s .35s ease-out both}
.hero-meta span{display:flex;align-items:center;gap:6px;font-size:.9rem;color:#a09cc4}
.hero-meta .icon{font-size:1.1rem}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;animation:fadeInUp .8s .45s ease-out both}
.hero-qr-wrap{position:relative;display:inline-block}
.hero-qr-wrap .qr-popup{position:absolute;bottom:calc(100% + 14px);left:50%;transform:translateX(-50%);background:var(--card-bg);border:1px solid var(--card-border);border-radius:12px;padding:10px;opacity:0;pointer-events:none;transition:all .3s;z-index:100;display:none;width:140px}
.hero-qr-wrap .qr-popup canvas,
.hero-qr-wrap .qr-popup img{display:block;width:120px;height:120px;border-radius:6px}
.qr-tip{display:block;text-align:center;font-size:.72rem;color:var(--gold);margin-top:4px;padding-bottom:4px}
@media(hover:hover){
  .hero-qr-wrap .qr-popup{display:block}
  .hero-qr-wrap:hover .qr-popup{opacity:1;pointer-events:auto}
}
.btn-primary{background:linear-gradient(135deg,var(--gold-dark),var(--gold));color:#0a0a1a;border:none;padding:14px 40px;border-radius:30px;font-size:1.05rem;font-weight:800;cursor:pointer;letter-spacing:1px;transition:all .3s;animation:glow 3s ease-in-out infinite}
.btn-primary:hover{background:linear-gradient(135deg,var(--gold),var(--gold-light));transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--gold-light);border:2px solid var(--gold);padding:14px 36px;border-radius:30px;font-size:1.05rem;font-weight:700;cursor:pointer;letter-spacing:1px;transition:all .3s}
.btn-outline:hover{background:rgba(212,168,69,.1);transform:translateY(-2px)}
.hero-scroll{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);z-index:3;animation:float 3s ease-in-out infinite}
.hero-scroll span{display:block;width:24px;height:40px;border:2px solid rgba(212,168,69,.4);border-radius:14px;position:relative}
.hero-scroll span::after{content:'';position:absolute;top:8px;left:50%;transform:translateX(-50%);width:4px;height:8px;background:var(--gold);border-radius:2px;animation:float 2s ease-in-out infinite}

/* ===== Section Common ===== */
.section{padding:80px 24px;position:relative}
.section-inner{max-width:1200px;margin:0 auto}
.section-tag{text-align:center;font-size:.78rem;color:var(--gold);letter-spacing:3px;text-transform:uppercase;margin-bottom:8px}
.section-title{text-align:center;font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800;margin-bottom:12px;color:#fff}
.section-title .gold{background:linear-gradient(135deg,var(--gold-light),var(--gold));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.section-desc{text-align:center;color:#8a84b4;max-width:650px;margin:0 auto 50px;font-size:.95rem}

/* ===== Intro ===== */
.intro{background:linear-gradient(180deg,#0a0a1a,#0f0f2e,#0a0a1a)}
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.intro-visual{position:relative}
.intro-visual img{border-radius:20px;width:100%;height:auto;display:block;border:1px solid var(--card-border);box-shadow:0 20px 60px rgba(0,0,0,.4)}
.intro-visual::after{content:'';position:absolute;inset:-10px;border:2px solid rgba(212,168,69,.15);border-radius:28px;z-index:-1;pointer-events:none}
.intro-text h3{font-size:1.8rem;font-weight:800;margin-bottom:16px;color:#fff}
.intro-text h3 .gold{background:linear-gradient(135deg,var(--gold-light),var(--gold));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.intro-text p{color:#a09cc4;line-height:1.9;font-size:.95rem;margin-bottom:14px}
.intro-highlights{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}
.intro-highlight{background:var(--card-bg);border:1px solid var(--card-border);border-radius:12px;padding:14px 16px;display:flex;align-items:center;gap:10px;transition:all .3s}
.intro-highlight:hover{border-color:var(--gold);transform:translateY(-2px)}
.intro-highlight .ih-icon{font-size:1.5rem;flex-shrink:0}
.intro-highlight .ih-text{font-size:.82rem;color:#c8c4dd;font-weight:600}

/* ===== Features ===== */
.features{background:linear-gradient(180deg,#0a0a1a,#121235,#0a0a1a)}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:20px;padding:32px 24px;text-align:center;transition:all .4s;position:relative;overflow:hidden;backdrop-filter:blur(10px)}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--gold),transparent);opacity:0;transition:opacity .4s}
.feature-card:hover::before{opacity:1}
.feature-card:hover{transform:translateY(-8px);border-color:var(--gold);box-shadow:0 20px 50px rgba(0,0,0,.3),0 0 30px rgba(212,168,69,.08)}
.feature-icon{font-size:2.8rem;margin-bottom:18px;display:block}
.feature-card h4{font-size:1.15rem;font-weight:700;color:#fff;margin-bottom:10px}
.feature-card p{font-size:.85rem;color:#8a84b4;line-height:1.7}

/* ===== Video ===== */
.video-section{background:linear-gradient(180deg,#0a0a1a,#0c0c2a,#0a0a1a)}
.video-wrapper{max-width:900px;margin:0 auto}
.video-container{position:relative;border-radius:20px;overflow:hidden;border:2px solid var(--card-border);box-shadow:0 20px 60px rgba(0,0,0,.5);background:#000;cursor:pointer}
.video-container video{width:100%;display:block;border-radius:18px}
.video-play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.3);transition:all .4s;pointer-events:none}
.video-play-btn.hidden{opacity:0}
.video-play-btn .play-icon{width:80px;height:80px;background:linear-gradient(135deg,var(--gold-dark),var(--gold));border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.8rem;color:#0a0a1a;padding-left:6px;box-shadow:0 0 40px rgba(212,168,69,.5);transition:all .3s;animation:glow 3s ease-in-out infinite}
.video-container:hover .video-play-btn .play-icon{transform:scale(1.1);background:linear-gradient(135deg,var(--gold),var(--gold-light))}
.video-info{display:flex;gap:20px;justify-content:center;flex-wrap:wrap;margin-top:24px}
.video-info-item{display:flex;align-items:center;gap:8px;background:var(--card-bg);border:1px solid var(--card-border);border-radius:12px;padding:10px 20px;font-size:.85rem;color:#c8c4dd;transition:all .3s}
.video-info-item:hover{border-color:var(--gold);transform:translateY(-2px)}
.video-info-item .vi-icon{font-size:1.2rem}

/* ===== Carousel ===== */
.carousel{position:relative;max-width:940px;margin:0 auto;overflow:hidden;border-radius:16px;border:2px solid var(--card-border);box-shadow:0 20px 60px rgba(0,0,0,.4)}
.carousel-track{display:flex;transition:transform .5s cubic-bezier(.25,.1,.25,1)}
.carousel-slide{min-width:100%;position:relative;aspect-ratio:1504/846;cursor:pointer}
.carousel-slide img{width:100%;height:100%;object-fit:cover}
.carousel-slide .slide-label{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(0deg,rgba(0,0,0,.75),transparent);padding:28px 24px 16px;color:#fff;font-size:.95rem;font-weight:600;opacity:0;transition:opacity .3s}
.carousel:hover .slide-label{opacity:1}
.carousel-btn{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;border:2px solid rgba(212,168,69,.35);background:rgba(10,10,30,.7);color:var(--gold);font-size:1.2rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .3s;z-index:10;backdrop-filter:blur(6px)}
.carousel-btn:hover{background:rgba(212,168,69,.2);border-color:var(--gold);color:var(--gold-light)}
.carousel-prev{left:16px}
.carousel-next{right:16px}
.carousel-dots{position:absolute;bottom:14px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:10}
.carousel-dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.35);border:none;cursor:pointer;transition:all .3s}
.carousel-dot.active{background:var(--gold);box-shadow:0 0 8px rgba(212,168,69,.6);width:28px;border-radius:5px}

/* ===== Lightbox ===== */
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.92);z-index:2000;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .3s;cursor:pointer}
.lightbox.active{opacity:1;pointer-events:auto}
.lightbox img{max-height:85vh;max-width:90vw;border-radius:12px;box-shadow:0 0 60px rgba(212,168,69,.15)}
.lightbox-close{position:absolute;top:24px;right:24px;background:rgba(255,255,255,.1);border:none;color:#fff;width:44px;height:44px;border-radius:50%;font-size:1.4rem;cursor:pointer;transition:all .3s}
.lightbox-close:hover{background:rgba(255,255,255,.2)}

/* ===== Welfare ===== */
.welfare{background:linear-gradient(180deg,#0a0a1a,#1a1030,#0a0a1a);position:relative;overflow:hidden}
.welfare::before{content:'';position:absolute;width:300px;height:300px;background:radial-gradient(circle,rgba(212,168,69,.06),transparent);top:-50px;right:-100px;border-radius:50%}
.welfare-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.welfare-card{background:linear-gradient(135deg,rgba(25,20,50,.9),rgba(30,25,55,.9));border:1px solid var(--card-border);border-radius:18px;padding:28px 22px;position:relative;overflow:hidden;transition:all .3s}
.welfare-card:hover{transform:translateY(-4px);border-color:var(--gold);box-shadow:0 15px 40px rgba(0,0,0,.3)}
.welfare-card .wc-tag{position:absolute;top:12px;right:12px;background:linear-gradient(135deg,#ff3b6e,#ff6b3b);color:#fff;font-size:.68rem;padding:3px 12px;border-radius:12px;font-weight:700}
.welfare-card .wc-number{font-size:3rem;font-weight:900;background:linear-gradient(180deg,var(--gold-light),var(--gold));-webkit-background-clip:text;-webkit-text-fill-color:transparent;line-height:1;margin-bottom:12px}
.welfare-card h4{font-size:1.1rem;color:#fff;font-weight:700;margin-bottom:8px}
.welfare-card p{font-size:.85rem;color:#8a84b4;line-height:1.6}
.price-badge{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:40px;flex-wrap:wrap}
.price-badge span{background:rgba(255,59,110,.1);border:1px solid rgba(255,59,110,.3);color:#ff6b8a;padding:8px 20px;border-radius:24px;font-size:.9rem;font-weight:700}
.price-badge .highlight{background:linear-gradient(135deg,#ff3b6e,#ff6b3b);color:#fff;border:none;font-size:1rem;padding:10px 28px}

/* ===== Countdown ===== */
.countdown-section{background:linear-gradient(180deg,#0a0a1a,#0f0f30);padding:60px 24px;text-align:center}
.countdown-title{font-size:1.6rem;font-weight:800;color:#fff;margin-bottom:8px}
.countdown-title .gold{background:linear-gradient(135deg,var(--gold-light),var(--gold));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.countdown-sub{color:#8a84b4;font-size:.9rem;margin-bottom:30px}
.countdown-timer{display:flex;gap:20px;justify-content:center;flex-wrap:wrap}
.countdown-item{background:var(--card-bg);border:1px solid var(--card-border);border-radius:16px;padding:20px 24px;min-width:100px;text-align:center;backdrop-filter:blur(10px)}
.countdown-item .cd-num{font-size:2.8rem;font-weight:900;background:linear-gradient(180deg,var(--gold-light),var(--gold));-webkit-background-clip:text;-webkit-text-fill-color:transparent;line-height:1}
.countdown-item .cd-label{font-size:.75rem;color:#8a84b4;margin-top:6px;letter-spacing:1px}

/* ===== Download/CTA ===== */
.cta{background:linear-gradient(180deg,#0a0a1a,#12123a,#0a0a1a);text-align:center}
.cta-box{background:linear-gradient(135deg,rgba(20,15,50,.95),rgba(30,20,60,.95));border:2px solid rgba(212,168,69,.25);border-radius:24px;padding:50px 40px;max-width:700px;margin:0 auto;position:relative;overflow:hidden}
.cta-box::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:conic-gradient(transparent,rgba(212,168,69,.05),transparent,rgba(212,168,69,.05),transparent);animation:rotate 20s linear infinite}
.cta-box>*{position:relative;z-index:1}
.cta-box h3{font-size:1.8rem;font-weight:800;color:#fff;margin-bottom:12px}
.cta-box p{color:#a09cc4;margin-bottom:28px;font-size:.95rem}
.cta-platforms{display:flex;gap:20px;justify-content:center;flex-wrap:wrap;margin-bottom:20px}
.cta-platform{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:16px 28px;text-align:center;transition:all .3s;cursor:pointer}
.cta-platform:hover{background:rgba(212,168,69,.1);border-color:var(--gold)}
.cta-download{display:flex;flex-direction:column;align-items:center;gap:8px;min-width:180px;padding:24px 36px;border:2px solid rgba(212,168,69,.25);border-radius:20px;background:linear-gradient(135deg,rgba(20,15,50,.95),rgba(30,20,60,.95));transition:all .3s}
.cta-download:hover{border-color:var(--gold);background:rgba(212,168,69,.12);transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,.4),0 0 30px rgba(212,168,69,.15)}
.cta-download .cp-icon{font-size:2.4rem;display:block}
.cta-download .cp-name{font-size:1rem;color:#fff;font-weight:700}
.cta-download .cp-size{font-size:.75rem;color:var(--gold);font-weight:500;margin-top:-4px}
.cta-platform .cp-icon{font-size:2rem;display:block;margin-bottom:6px}
.cta-platform .cp-name{font-size:.85rem;color:#c8c4dd;font-weight:600}
.cta-note{color:#6a64a4;font-size:.78rem;margin-top:12px}
.cta-qrcodes{display:flex;gap:40px;justify-content:center;flex-wrap:wrap;margin-top:24px}
.qr-card{text-align:center}
.qr-card canvas,.qr-card img{display:block;width:130px;height:130px;border-radius:10px;margin:0 auto}
.qr-label{display:block;color:#8a84b4;font-size:.82rem;margin-bottom:10px;font-weight:600}

/* ===== Back to Top ===== */
.back-to-top{position:fixed;bottom:32px;right:32px;width:44px;height:44px;border-radius:50%;border:2px solid rgba(212,168,69,.35);background:rgba(10,10,30,.8);color:var(--gold);font-size:1.1rem;cursor:pointer;z-index:999;opacity:0;pointer-events:none;transition:all .35s;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.back-to-top.visible{opacity:1;pointer-events:auto}
.back-to-top:hover{background:rgba(212,168,69,.2);border-color:var(--gold);color:var(--gold-light);transform:translateY(-3px);box-shadow:0 0 20px rgba(212,168,69,.3)}

/* ===== Friendly Links ===== */
.friendly-links{background:#08081a;border-top:1px solid rgba(212,168,69,.1);padding:20px 24px;text-align:center}
.friendly-links .section-inner{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:4px 16px}
.fl-title{color:#6a64a4;font-size:.82rem;font-weight:600;white-space:nowrap}
.friendly-links a{color:#8a84b4;font-size:.8rem;transition:color .25s}
.friendly-links a:hover{color:var(--gold-light)}

/* ===== Footer ===== */
.footer{background:#060615;border-top:1px solid rgba(212,168,69,.1);padding:40px 24px}
.footer-inner{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px}
.footer-info{color:#6a64a4;font-size:.8rem}
.footer-info strong{color:#a09cc4}
.footer-tag{display:flex;align-items:center;gap:8px;font-size:.82rem;color:var(--gold);font-weight:700}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .welfare-grid{grid-template-columns:repeat(2,1fr)}
  .intro-grid{grid-template-columns:1fr;gap:36px}
  .intro-visual{max-width:500px;margin:0 auto}
  .video-play-btn .play-icon{width:64px;height:64px;font-size:1.5rem}
}
@media(max-width:768px){
  .nav-links{position:fixed;top:0;right:-100%;width:280px;height:100vh;background:rgba(10,10,30,.98);flex-direction:column;justify-content:center;gap:36px;transition:right .4s;backdrop-filter:blur(20px);border-left:1px solid rgba(212,168,69,.1)}
  .nav-links.open{right:0}
  .nav-toggle{display:flex}
  .carousel{max-width:100%;border-radius:12px}
  .carousel-slide{aspect-ratio:16/10}
  .carousel-btn{width:34px;height:34px;font-size:1rem}
  .carousel-prev{left:8px}
  .carousel-next{right:8px}
  .features-grid{grid-template-columns:1fr 1fr;gap:16px}
  .feature-card{padding:24px 16px}
  .feature-icon{font-size:2.2rem}
  .gallery-grid{grid-template-columns:repeat(2,1fr)}
  .welfare-grid{grid-template-columns:1fr}
  .hero-meta{flex-direction:column;gap:10px;align-items:center}
  .footer-inner{flex-direction:column;text-align:center}
  .countdown-item{padding:14px 16px;min-width:70px}
  .countdown-item .cd-num{font-size:2rem}
  .cta-box{padding:32px 20px}
  .intro-text h3{font-size:1.4rem}
}
@media(max-width:480px){
  .carousel-btn{width:30px;height:30px;font-size:.85rem}
  .carousel-slide{aspect-ratio:4/3}
  .carousel{margin:0 -16px;border-radius:0;border-left:none;border-right:none}
  .features-grid{grid-template-columns:1fr}
  .gallery-grid{grid-template-columns:1fr}
  .hero-actions{flex-direction:column;align-items:center}
  .hero-qr-wrap{display:block;width:100%}
  .btn-primary,.btn-outline{width:100%;max-width:100%;text-align:center}
  .price-badge{flex-direction:column}
  .countdown-timer{gap:12px}
  .countdown-item{min-width:65px;padding:12px 10px}
  .cta-platforms{flex-direction:column;align-items:center}
  .video-play-btn .play-icon{width:52px;height:52px;font-size:1.2rem}
  .back-to-top{bottom:20px;right:20px;width:38px;height:38px;font-size:1rem}
}