@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@600;700;800&display=swap');
:root{--ink:#10233f;--muted:#66768a;--line:#dfe7ef;--bg:#f5f8fb;--white:#fff;--accent:#6757d9;--accent2:#8b7df0;--shadow:0 18px 50px rgba(16,35,63,.09)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:"DM Sans",Arial,sans-serif;line-height:1.6}a{text-decoration:none;color:inherit}.container{width:min(1120px,92%);margin:auto}.site-header{position:sticky;top:0;z-index:30;background:#fff;border-bottom:1px solid #e6ecf2}.nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font:800 19px Manrope}.brand small{display:block;color:var(--accent);font:800 10px "DM Sans";letter-spacing:1.5px}.brand-mark{width:39px;height:39px;border-radius:12px;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:11px;letter-spacing:.5px}.nav{display:flex;gap:25px;font-size:13px;font-weight:700;color:#596a7e}.nav a:hover,.nav a.active{color:var(--accent)}.menu-toggle{display:none;border:0;background:transparent;font-size:25px;color:var(--ink)}
.hero{padding:88px 0 100px;background:radial-gradient(circle at 85% 30%,rgba(139,125,240,.23),transparent 35%),linear-gradient(120deg,#101f37,#1b3150);color:#fff;overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}.eyebrow{display:inline-block;font-size:10px;letter-spacing:2px;font-weight:800;color:var(--accent);margin-bottom:12px}.hero .eyebrow{color:#bcb5ff}.hero h1{font:800 clamp(43px,6vw,70px)/1.03 Manrope;margin:0 0 22px}.hero h1 span{color:#b9b0ff}.hero p{color:#d4ddea;max-width:620px;font-size:17px}.hero-actions{display:flex;gap:11px;margin-top:30px}.btn{padding:13px 19px;border-radius:11px;font-weight:800;font-size:13px;display:inline-block}.btn-primary{background:#fff;color:var(--ink)}.btn-outline{border:1px solid rgba(255,255,255,.22);color:#fff}.hero-visual{height:390px;position:relative}.device{position:absolute;background:#fff;border-radius:26px;box-shadow:0 25px 60px rgba(0,0,0,.25)}.device-main{width:275px;height:345px;right:65px;top:15px;padding:28px}.device-top{height:10px;width:60px;background:#e9edf2;border-radius:10px;margin:auto}.post-square{margin-top:45px;aspect-ratio:1;background:linear-gradient(135deg,#ddd8ff,#8b7df0);border-radius:16px;color:#fff;display:grid;place-items:center;text-align:center;font:700 20px Manrope}.device-story{width:135px;height:240px;right:0;bottom:0;padding:8px;border:8px solid #fff}.story-content{height:100%;border-radius:15px;background:linear-gradient(160deg,#1d3051,#8b7df0);display:grid;place-items:center;text-align:center;color:#fff;font:600 16px Manrope}.floating-tag{position:absolute;left:20px;bottom:35px;background:#fff;color:var(--ink);border-radius:12px;padding:12px 15px;font-size:10px;font-weight:800;letter-spacing:1px;box-shadow:var(--shadow)}
.quick-section,.guide-section,.tips-section{padding:80px 0}.section-heading{margin-bottom:28px}.section-heading h2{font:800 33px Manrope;margin:0 0 7px}.section-heading p{color:var(--muted);margin:0}.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.quick-grid article{background:#fff;border:1px solid var(--line);border-radius:17px;padding:22px;box-shadow:var(--shadow)}.quick-grid strong{display:block;font:800 21px Manrope}.quick-grid span{display:block;font-size:12px;color:var(--muted);margin:3px 0}.quick-grid small{font-size:10px;color:var(--accent);font-weight:800}.guide-section{background:#fff}.filter-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:25px}.filter{border:1px solid var(--line);background:#fff;color:#607085;border-radius:999px;padding:8px 13px;font:700 11px "DM Sans";cursor:pointer}.filter.active,.filter:hover{background:var(--ink);border-color:var(--ink);color:#fff}.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.size-card{border:1px solid var(--line);border-radius:18px;padding:22px;background:#fff;transition:.2s}.size-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.card-top{display:flex;justify-content:space-between;align-items:center}.platform{font-size:11px;font-weight:800;color:var(--accent)}.ratio{font-size:10px;font-weight:800;background:#f0eefc;padding:5px 8px;border-radius:7px}.size-card h3{font:800 18px Manrope;margin:19px 0 5px}.size{font:800 27px Manrope}.size small{font-size:10px;color:var(--muted)}.size-card p{font-size:12px;color:var(--muted);min-height:39px}.meta{display:flex;align-items:center;justify-content:space-between;border-top:1px solid #edf1f5;padding-top:14px;margin-top:13px;font-size:10px;color:#8a98a9}.copy-btn{border:0;background:#f0eefc;color:var(--accent);padding:7px 9px;border-radius:8px;font-weight:800;font-size:10px;cursor:pointer}.tips-section{background:#f0f2fb}.tips-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.tips-grid h2{font:800 34px/1.15 Manrope;margin:0 0 12px}.tips-grid p{color:var(--muted)}.tip-list{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden}.tip-list div{display:flex;gap:18px;padding:17px 20px;border-bottom:1px solid #edf1f5;font-size:13px}.tip-list div:last-child{border:0}.tip-list b{color:var(--accent);font-size:11px}
.floating-wa{position:fixed;right:24px;bottom:24px;width:54px;height:54px;border-radius:50%;display:grid;place-items:center;background:#168a70;color:#fff;font-weight:800;font-size:12px;box-shadow:0 12px 28px rgba(0,0,0,.18);z-index:20}.site-footer{background:#0c1e34;color:#c5d1df;padding:52px 0 20px}.footer-grid{display:grid;grid-template-columns:1.2fr .7fr 1fr;gap:50px}.footer-brand{color:#fff}.footer-grid h4{color:#fff;margin:0 0 10px}.footer-grid>div>a{display:block;font-size:12px;margin:6px 0}.footer-grid p{font-size:11px;color:#94a6ba;max-width:330px}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:32px;padding-top:17px;display:flex;justify-content:space-between;font-size:10px;color:#8194aa}
.inner-hero{padding:62px 0;background:#102b48;color:#fff}.inner-hero h1{font:800 44px Manrope;margin:0}.content-page{padding:55px 0 90px}.content-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:35px;box-shadow:var(--shadow)}.content-card h2{font:800 22px Manrope;margin-top:28px}.content-card h2:first-child{margin-top:0}.content-card p,.content-card li{font-size:14px;color:#59697d}.faq{border-bottom:1px solid #e4eaf0;padding:17px 0}.faq summary{font-weight:800;cursor:pointer}.faq p{margin:10px 0 0}.contact-item{background:#f5f7fa;border-radius:12px;padding:14px;margin:10px 0}
@media(max-width:820px){.nav{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;padding:18px 5%;flex-direction:column;gap:14px;border-bottom:1px solid var(--line)}.nav.open{display:flex}.menu-toggle{display:block}.hero-grid,.tips-grid{grid-template-columns:1fr}.hero{padding:65px 0}.hero-visual{height:330px}.quick-grid{grid-template-columns:1fr 1fr}.guide-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:540px){.hero h1{font-size:42px}.hero-visual{transform:scale(.85);transform-origin:center}.quick-grid,.guide-grid,.footer-grid{grid-template-columns:1fr}.content-card{padding:22px}.hero-actions{flex-direction:column}.btn{text-align:center}}