:root{
--navy:#0e2a47;
--navy-2:#16365e;
--navy-3:#1f4372;
--gold:#c2a15f;
--gold-2:#b3904f;
--ink:#132338;
--ink-2:#41536b;
--muted:#64748b;
--paper:#ffffff;
--bg:#f3f6fa;
--line:#e2e8f0;
--shadow:0 16px 44px rgba(14,42,71,.12);
--radius:16px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Manrope","Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.66;font-size:16px}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
/* ---------- Top bar ---------- */
.topbar{background:var(--navy);color:#c8d4e4;font-size:12.5px;text-align:center;padding:8px 16px;letter-spacing:.4px}
.topbar b{color:var(--gold);font-weight:700}
/* ---------- Nav ---------- */
.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:1180px;margin:0 auto;padding:13px 24px;display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:11px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:.5px;color:var(--navy)}
.brand-text small{font-size:9.5px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--gold-2);margin-top:2px}
.nav-links{display:flex;gap:24px;margin-left:auto;font-size:14px;font-weight:600;color:var(--ink-2)}
.nav-links a{transition:color .2s}
.nav-links a:hover{color:var(--navy-3)}
.nav-cta{background:var(--navy);color:#fff;font-size:13.5px;font-weight:700;padding:10px 20px;border-radius:8px;transition:transform .2s,box-shadow .2s}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 8px 18px rgba(14,42,71,.28)}
/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(155deg,#f2f6fb 0%,#ffffff 55%,#eef2f8 100%)}
.hero::before{content:"";position:absolute;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(31,67,115,.10),transparent 68%);top:-180px;right:-140px;pointer-events:none}
.hero::after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(194,161,95,.14),transparent 68%);bottom:-200px;left:-120px;pointer-events:none}
.hero-inner{position:relative;display:grid;grid-template-columns:1.02fr .98fr;gap:46px;align-items:center;padding:66px 24px 60px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;background:#fff;border:1px solid var(--line);color:var(--navy-3);font-size:12px;font-weight:800;letter-spacing:2.4px;text-transform:uppercase;padding:7px 15px;border-radius:6px;margin-bottom:20px;box-shadow:0 4px 14px rgba(14,42,71,.06)}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--gold)}
.hero h1{font-size:clamp(34px,4.4vw,52px);font-weight:800;line-height:1.1;letter-spacing:-1px;margin-bottom:18px;color:var(--navy)}
.hero h1 .gold{color:var(--gold-2)}
.hero .lead{font-size:16px;color:var(--ink-2);max-width:560px;margin-bottom:12px}
.hero .lead + .lead{margin-bottom:24px}
.hero .lead b{color:var(--navy)}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:14.5px;padding:13px 26px;border-radius:8px;transition:transform .2s,box-shadow .2s}
.btn-primary{background:linear-gradient(120deg,var(--navy),var(--navy-3));color:#fff;box-shadow:0 10px 24px rgba(14,42,71,.3)}
.btn-ghost{background:#fff;color:var(--navy);border:1.5px solid var(--line)}
.btn:hover{transform:translateY(-2px)}
.btn-primary:hover{box-shadow:0 14px 30px rgba(14,42,71,.4)}
.btn-ghost:hover{border-color:var(--navy-3);color:var(--navy-3)}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px}
.hero-tags span{background:#fff;border:1px solid var(--line);color:var(--ink-2);font-size:12px;font-weight:600;padding:6px 13px;border-radius:6px}
.hero-tags span b{color:var(--navy);font-weight:700}
.hero-visual{position:relative}
.hero-main{border-radius:20px;overflow:hidden;box-shadow:var(--shadow);background:#fff;aspect-ratio:1/1}
.hero-main img{width:100%;height:100%;object-fit:cover;cursor:zoom-in;transition:opacity .25s}
.hero-thumbs{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;margin-top:12px}
.hero-thumbs button{position:relative;border:2px solid transparent;border-radius:10px;overflow:hidden;cursor:pointer;padding:0;background:#fff;aspect-ratio:1/1;transition:border-color .2s,transform .2s}
.hero-thumbs button:hover{transform:translateY(-2px)}
.hero-thumbs button.active{border-color:var(--gold)}
.hero-thumbs img{width:100%;height:100%;object-fit:cover}
/* ---------- Section base ---------- */
.section{padding:72px 0}
.section-title{font-size:clamp(25px,3vw,33px);font-weight:800;letter-spacing:-.5px;text-align:center;margin-bottom:12px;color:var(--navy)}
.section-title .gold{color:var(--gold-2)}
.section-sub{text-align:center;color:var(--muted);font-size:15px;max-width:780px;margin:0 auto 42px}
.section-sub b{color:var(--navy)}
/* ---------- Trust bar ---------- */
.trust{background:var(--navy);color:#fff}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;text-align:center;padding:26px 0}
.trust-item{padding:10px 16px;border-left:1px solid rgba(255,255,255,.12)}
.trust-item:first-child{border-left:none}
.trust-item strong{display:block;font-size:18px;font-weight:800;color:var(--gold);letter-spacing:.3px}
.trust-item span{font-size:12px;color:#c8d4e4;letter-spacing:1.2px;text-transform:uppercase}
/* ---------- Colors / customization ---------- */
.colors{background:var(--paper)}
.color-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:44px;align-items:center}
.color-visual{border-radius:20px;overflow:hidden;box-shadow:var(--shadow);background:#fff;cursor:zoom-in}
.color-visual img{width:100%;aspect-ratio:1/1;object-fit:cover}
.color-copy h3{font-size:26px;font-weight:800;color:var(--navy);margin-bottom:14px;letter-spacing:-.4px}
.color-copy p{font-size:15px;color:var(--ink-2);margin-bottom:16px}
.color-copy p b{color:var(--navy)}
.check-list{list-style:none;display:grid;gap:10px;margin-top:6px}
.check-list li{display:flex;gap:11px;align-items:flex-start;font-size:14.5px;color:var(--ink-2)}
.check-list li::before{content:"";flex:none;width:19px;height:19px;margin-top:3px;border-radius:5px;background:linear-gradient(135deg,var(--gold),var(--gold-2));-webkit-mask:url('data:image/svg+xml;utf8,') center/contain no-repeat;mask:url('data:image/svg+xml;utf8,') center/contain no-repeat}
/* ---------- Craft ---------- */
.craft{background:var(--bg)}
.craft-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:44px;align-items:center}
.craft-visual{border-radius:20px;overflow:hidden;box-shadow:var(--shadow);background:#fff;cursor:zoom-in}
.craft-visual img{width:100%;aspect-ratio:1/1;object-fit:cover}
.craft-copy h3{font-size:26px;font-weight:800;color:var(--navy);margin-bottom:14px;letter-spacing:-.4px}
.craft-copy p{font-size:15px;color:var(--ink-2);margin-bottom:20px}
.craft-copy p b{color:var(--navy)}
.craft-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.ccard{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 18px 16px;transition:transform .22s,box-shadow .22s}
.ccard:hover{transform:translateY(-4px);box-shadow:0 12px 28px rgba(14,42,71,.10)}
.ccard .ico{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--navy),var(--navy-3));color:#fff;display:flex;align-items:center;justify-content:center;margin-bottom:11px}
.ccard h4{font-size:14.5px;font-weight:800;color:var(--navy);margin-bottom:4px}
.ccard p{font-size:12.5px;color:var(--muted);margin:0}
/* ---------- Hardware ---------- */
.hardware{background:var(--paper)}
.hw-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:44px;align-items:center}
.hw-visual{border-radius:20px;overflow:hidden;box-shadow:var(--shadow);background:#fff;cursor:zoom-in}
.hw-visual img{width:100%;aspect-ratio:1/1;object-fit:cover}
.hw-copy h3{font-size:26px;font-weight:800;color:var(--navy);margin-bottom:14px;letter-spacing:-.4px}
.hw-copy p{font-size:15px;color:var(--ink-2);margin-bottom:20px}
.hw-copy p b{color:var(--navy)}
.hw-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.hw-item{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:15px 16px}
.hw-item .dot{flex:none;width:9px;height:9px;border-radius:3px;background:var(--gold);margin-top:7px}
.hw-item h4{font-size:13.5px;font-weight:800;color:var(--navy)}
.hw-item p{font-size:12px;color:var(--muted);margin:0}
/* ---------- Gift set banner ---------- */
.giftset{background:linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 60%,var(--navy-3) 100%);color:#fff;position:relative;overflow:hidden}
.giftset::before{content:"";position:absolute;width:440px;height:440px;border-radius:50%;background:radial-gradient(circle,rgba(194,161,95,.28),transparent 66%);top:-160px;right:-100px}
.giftset .container{position:relative;display:grid;grid-template-columns:1.02fr .98fr;gap:44px;align-items:center}
.giftset h2{font-size:clamp(24px,2.8vw,32px);font-weight:800;letter-spacing:-.4px;margin-bottom:14px;color:#fff}
.giftset h2 .gold{color:var(--gold)}
.giftset p{color:#c8d4e4;font-size:15px;margin-bottom:18px}
.giftset p b{color:#fff}
.giftset .check-list li{color:#dbe4f0}
.giftset-visual{border-radius:20px;overflow:hidden;box-shadow:0 20px 50px rgba(0,0,0,.35);cursor:zoom-in}
.giftset-visual img{width:100%;aspect-ratio:1/1;object-fit:cover}
/* ---------- Scenarios ---------- */
.scenarios{background:var(--bg)}
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.scene{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:transform .25s,box-shadow .25s;cursor:zoom-in}
.scene:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.scene .img{aspect-ratio:4/3;overflow:hidden;position:relative}
.scene img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.scene:hover img{transform:scale(1.06)}
.scene .tag{position:absolute;top:12px;left:12px;background:rgba(14,42,71,.86);color:var(--gold);font-size:10.5px;font-weight:800;letter-spacing:1.4px;text-transform:uppercase;padding:5px 11px;border-radius:6px}
.scene .body{padding:16px 18px 18px}
.scene h4{font-size:15px;font-weight:800;color:var(--navy);margin-bottom:4px}
.scene p{font-size:13px;color:var(--muted);margin:0}
/* ---------- Steps ---------- */
.steps{background:var(--paper)}
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px 26px;text-align:center;position:relative;transition:transform .25s,box-shadow .25s}
.step:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.step .num{width:52px;height:52px;margin:0 auto 16px;border-radius:50%;background:linear-gradient(135deg,var(--navy),var(--navy-3));color:var(--gold);font-weight:800;font-size:21px;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 22px rgba(14,42,71,.28)}
.step h4{font-size:17px;font-weight:800;color:var(--navy);margin-bottom:8px}
.step p{font-size:13.5px;color:var(--muted);margin:0}
/* ---------- Why choose ---------- */
.why{background:var(--bg)}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.why-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;text-align:center;transition:transform .25s,box-shadow .25s;position:relative;overflow:hidden}
.why-card::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:linear-gradient(90deg,var(--gold),var(--gold-2))}
.why-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.why-card .ico{width:52px;height:52px;margin:0 auto 14px;border-radius:13px;display:flex;align-items:center;justify-content:center;color:#fff;background:linear-gradient(135deg,var(--navy),var(--navy-3));box-shadow:0 8px 18px rgba(14,42,71,.22)}
.why-card h4{font-size:15.5px;font-weight:800;color:var(--navy);margin-bottom:7px}
.why-card p{font-size:13px;color:var(--muted);margin:0}
/* ---------- FAQ ---------- */
.faq{background:var(--paper)}
.faq-list{max-width:840px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;padding:4px 22px;transition:box-shadow .2s}
.faq details[open]{box-shadow:0 10px 26px rgba(14,42,71,.08);border-color:#cbd7e6}
.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:16px 0;font-size:15px;font-weight:700;color:var(--navy)}
.faq summary::-webkit-details-marker{display:none}
.faq summary .tag{flex:none;font-size:10px;font-weight:800;letter-spacing:1.2px;text-transform:uppercase;color:var(--gold-2);background:#f6f1e6;border-radius:6px;padding:3px 8px}
.faq summary::after{content:"+";flex:none;width:28px;height:28px;border-radius:8px;background:#eef2f8;color:var(--navy);font-size:17px;font-weight:700;display:flex;align-items:center;justify-content:center;transition:transform .25s,background .25s}
.faq details[open] summary::after{content:"\2013";transform:rotate(180deg);background:var(--navy);color:var(--gold)}
.faq .faq-body{font-size:14px;color:var(--muted);padding:0 0 18px}
.faq .faq-body b{color:var(--navy)}
/* ---------- CTA ---------- */
.cta{background:var(--navy);color:#fff;text-align:center;padding:76px 24px;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;width:480px;height:480px;border-radius:50%;background:radial-gradient(circle,rgba(194,161,95,.3),transparent 65%);top:-210px;right:-120px}
.cta::after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(31,67,115,.55),transparent 65%);bottom:-200px;left:-100px}
.cta-inner{position:relative;max-width:760px;margin:0 auto}
.cta h2{font-size:clamp(25px,3.2vw,36px);font-weight:800;letter-spacing:-.5px;margin-bottom:14px;color:#fff}
.cta h2 .gold{color:var(--gold)}
.cta p{color:#c8d4e4;font-size:15px;margin-bottom:28px}
.cta .btn-primary{background:linear-gradient(120deg,var(--gold),var(--gold-2));color:var(--navy);font-size:15.5px;padding:15px 34px;box-shadow:0 12px 28px rgba(0,0,0,.3)}
.cta .btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.35)}
.cta .btn-ghost:hover{border-color:var(--gold);color:var(--gold)}
.cta-note{margin-top:22px;font-size:13px;color:#93a5bd;letter-spacing:.3px}
.cta-note b{color:#d9e2ef;font-weight:700}
.footer{background:var(--navy);border-top:1px solid rgba(255,255,255,.08);color:#93a5bd;text-align:center;font-size:13px;padding:26px 16px}
.footer-brand{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap}
/* ---------- Lightbox ---------- */
.lightbox{position:fixed;inset:0;background:rgba(8,16,28,.94);display:flex;align-items:center;justify-content:center;z-index:9999;opacity:0;pointer-events:none;transition:opacity .25s}
.lightbox.active{opacity:1;pointer-events:auto}
.lightbox img{max-width:92vw;max-height:88vh;border-radius:12px;box-shadow:0 24px 70px rgba(0,0,0,.6);transform:scale(.95);transition:transform .25s}
.lightbox.active img{transform:scale(1)}
.lb-close{position:absolute;top:16px;right:28px;color:#fff;font-size:40px;line-height:1;cursor:pointer;user-select:none}
.lb-caption{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);color:#dfe5f0;font-size:14px;background:rgba(255,255,255,.1);padding:6px 16px;border-radius:8px;max-width:80%;text-align:center}
/* ---------- Responsive ---------- */
@media (max-width:1020px){
.scene-grid{grid-template-columns:repeat(2,1fr)}
.why-grid{grid-template-columns:repeat(2,1fr)}
.trust-grid{grid-template-columns:repeat(2,1fr)}
.trust-item{border-left:none}
.trust-item:nth-child(odd){border-right:1px solid rgba(255,255,255,.12)}
}
@media (max-width:860px){
.hero-inner,.color-grid,.craft-grid,.hw-grid,.giftset .container{grid-template-columns:1fr;gap:34px;padding-top:0}
.hero-inner{padding:50px 24px 46px}
.giftset .container{padding:56px 24px}
.step-grid{grid-template-columns:1fr}
.nav-links{display:none}
}
@media (max-width:640px){
.scene-grid{grid-template-columns:1fr}
.craft-cards,.hw-list{grid-template-columns:1fr}
.hero-thumbs{grid-template-columns:repeat(3,1fr)}
.hero h1{font-size:32px}
.section{padding:54px 0}
.trust-grid{grid-template-columns:1fr}
.trust-item{border-right:none}
.color-visual img,.craft-visual img,.hw-visual img,.giftset-visual img{aspect-ratio:4/3}
}