:root {
  --bg: #0b0f16; --bg-2: #0e141d; --bg-3: #121926;
  --card: rgba(255,255,255,.035); --card-hover: rgba(255,255,255,.06);
  --stroke: rgba(255,255,255,.08); --stroke-strong: rgba(255,255,255,.14);
  --text: #f2f5f9; --text-2: #a7b4c6; --text-3: #6d7c92;
  --accent: #5ea2ef; --accent-strong: #7ab5f7;
  --radius: 18px; --radius-sm: 12px; --maxw: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg); color: var(--text); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
::selection { background: rgba(94,162,239,.35); }
a { color: var(--accent); text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.nav { position: sticky; top: 0; z-index: 50; backdrop-filter: saturate(160%) blur(18px); -webkit-backdrop-filter: saturate(160%) blur(18px); background: rgba(11,15,22,.72); border-bottom: 1px solid rgba(255,255,255,.06); }
.nav-inner { display: flex; align-items: center; gap: 28px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 17px; letter-spacing: -.01em; }
.brand img { width: 28px; height: 28px; border-radius: 7px; }
.nav-links { display: flex; gap: 22px; margin-left: auto; }
.nav-links a { color: var(--text-2); font-size: 14px; font-weight: 500; transition: color .15s; }
.nav-links a:hover { color: var(--text); }
@media (max-width: 720px) { .nav-links a:not(.keep) { display: none; } }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 9px; font-family: var(--font); font-size: 15px; font-weight: 600; padding: 11px 20px; border-radius: 12px; cursor: pointer; border: 1px solid transparent; transition: all .18s ease; white-space: nowrap; }
.btn-primary { background: linear-gradient(180deg, #6dadf4, #3d7fd0); color: #fff; box-shadow: 0 1px 0 rgba(255,255,255,.25) inset, 0 8px 24px rgba(61,127,208,.35); }
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn-ghost { background: rgba(255,255,255,.05); color: var(--text); border-color: var(--stroke-strong); }
.btn-ghost:hover { background: rgba(255,255,255,.09); }
.btn-lg { font-size: 16px; padding: 14px 26px; border-radius: 14px; }
.page-hero { position: relative; padding: 76px 0 40px; overflow: hidden; }
.hero-glow { position: absolute; inset: 0; pointer-events: none; background: radial-gradient(52% 44% at 70% 30%, rgba(66,125,199,.20), transparent 70%); }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--accent-strong); background: rgba(94,162,239,.10); border: 1px solid rgba(94,162,239,.25); padding: 6px 12px; border-radius: 999px; margin-bottom: 20px; }
h1 { font-size: clamp(32px, 4.6vw, 50px); line-height: 1.08; letter-spacing: -.03em; font-weight: 800; margin-bottom: 18px; max-width: 780px; }
h1 .grad { background: linear-gradient(92deg, #8fc1fb 0%, #5ea2ef 55%, #3d7fd0 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.sub { font-size: 17.5px; line-height: 1.65; color: var(--text-2); max-width: 640px; margin-bottom: 28px; }
.ctas { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.meta { margin-top: 16px; font-size: 13.5px; color: var(--text-3); }
section { padding: 64px 0; position: relative; }
h2 { font-size: clamp(26px, 3.2vw, 36px); letter-spacing: -.02em; line-height: 1.15; font-weight: 750; margin-bottom: 12px; }
.sec-sub { font-size: 16.5px; color: var(--text-2); line-height: 1.6; max-width: 640px; }
.center { text-align: center; }
.center .sec-sub { margin: 0 auto; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; }
@media (max-width: 880px) { .two-col { grid-template-columns: 1fr; } }
.viewer-card { position: relative; background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02)); border: 1px solid var(--stroke); border-radius: 24px; padding: 16px; box-shadow: 0 30px 80px rgba(0,0,0,.45); }
.viewer-stage { position: relative; aspect-ratio: 1/1; border-radius: 16px; overflow: hidden; background: radial-gradient(60% 60% at 50% 42%, #1a2433, #0d1320 78%); cursor: grab; touch-action: pan-y; user-select: none; -webkit-user-select: none; }
.viewer-stage.dragging { cursor: grabbing; }
.viewer-stage > img.frame { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; pointer-events: none; }
.src-thumb { position: absolute; left: 12px; bottom: 12px; z-index: 5; cursor: zoom-in; border-radius: 12px; filter: drop-shadow(0 8px 18px rgba(0,0,0,.5)); transition: transform .2s ease; }
.src-thumb:hover { transform: scale(1.06); }
.src-thumb:focus { outline: 2px solid var(--accent); outline-offset: 3px; }
.src-thumb img { height: 76px; width: auto; max-width: 88px; object-fit: contain; border-radius: 10px; background: #ffffff; padding: 3px; }
.src-thumb span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.src-full { position: absolute; inset: 0; z-index: 4; display: flex; align-items: center; justify-content: center; background: rgba(9,13,19,.9); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); opacity: 0; transform: scale(.22); transform-origin: 13% 90%; transition: opacity .22s ease, transform .3s cubic-bezier(.2,.8,.25,1); pointer-events: none; }
.src-full img { max-width: calc(100% - 36px); max-height: calc(100% - 36px); width: auto; height: auto; background: #ffffff; border-radius: 12px; padding: 6px; }
.src-thumb:hover ~ .src-full, .src-thumb:focus ~ .src-full, .show-src .src-full { opacity: 1; transform: scale(1); }
@media (prefers-reduced-motion: reduce) { .src-full { transform: none; transition: opacity .2s; } }
.viewer-hint { position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%); display: flex; align-items: center; gap: 7px; font-size: 12.5px; font-weight: 500; color: var(--text-2); background: rgba(10,14,20,.6); border: 1px solid rgba(255,255,255,.1); padding: 6px 12px; border-radius: 999px; pointer-events: none; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.made-note { text-align: center; font-size: 12.5px; color: var(--text-3); margin-top: 12px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
@media (max-width: 880px) { .grid3 { grid-template-columns: 1fr; } }
.card { background: var(--card); border: 1px solid var(--stroke); border-radius: var(--radius); padding: 26px 24px; }
.card h3 { font-size: 17px; font-weight: 650; margin-bottom: 8px; color: var(--text); }
.card p { font-size: 14.5px; line-height: 1.6; color: var(--text-2); }
.card .num { font-size: 13px; font-weight: 800; color: var(--accent-strong); background: rgba(94,162,239,.12); border: 1px solid rgba(94,162,239,.3); width: 30px; height: 30px; border-radius: 9px; display: flex; align-items: center; justify-content: center; margin-bottom: 14px; }
.formats { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 20px; }
.fmt { font-size: 14px; font-weight: 700; letter-spacing: .04em; background: rgba(255,255,255,.045); border: 1px solid var(--stroke-strong); border-radius: 12px; padding: 10px 18px; color: var(--text); }
.faq { max-width: 760px; margin: 40px auto 0; }
.faq details { border: 1px solid var(--stroke); border-radius: var(--radius-sm); background: var(--card); margin-bottom: 12px; overflow: hidden; }
.faq summary { cursor: pointer; padding: 18px 22px; font-size: 15.5px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 20px; font-weight: 400; color: var(--text-3); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .a { padding: 0 22px 20px; font-size: 14.5px; line-height: 1.65; color: var(--text-2); }
.cta-final { text-align: center; padding: 80px 0 90px; position: relative; overflow: hidden; }
footer { border-top: 1px solid rgba(255,255,255,.06); padding: 34px 0 44px; }
.foot { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; font-size: 13.5px; color: var(--text-3); }
.foot .brand { font-size: 14.5px; }
.foot .brand img { width: 22px; height: 22px; border-radius: 6px; }
.foot-links { margin-left: auto; display: flex; gap: 18px; flex-wrap: wrap; }
.foot-links a { color: var(--text-3); transition: color .15s; }
.foot-links a:hover { color: var(--text); }