*,*::before,*::after{box-sizing:border-box}
:root{
  --red:#c7000b;--red-deep:#9a0008;--red-light:rgba(199,0,11,.06);--red-glow:rgba(199,0,11,.12);
  --ink:#151526;--ink2:#3d3d54;--ink3:#7a7a90;--ink4:#a8a8b8;
  --bg:#fdfdfe;--bg2:#f4f5f8;--bg3:#ecedf2;
  --line:#e2e4ea;--line2:#eff0f4;
  --green:#0f8a3f;--blue:#2563eb;
  --sans:"DM Sans","PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,system-ui,sans-serif;
  --mono:"IBM Plex Mono","SF Mono",Consolas,monospace;
  --shadow:0 2px 8px rgba(0,0,0,.05),0 12px 36px rgba(0,0,0,.04);
  --r:6px;--rl:10px;
  --ease:cubic-bezier(.22,.68,0,1)
}
html,body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
body::after{content:"";position:fixed;inset:0;pointer-events:none;z-index:999;opacity:.35;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.025'/%3E%3C/svg%3E");background-repeat:repeat;background-size:180px}
.rv{opacity:1;transform:none;transition:opacity .7s var(--ease),transform .7s var(--ease)}.rv.vis{opacity:1;transform:translateY(0)}.rv-d1{transition-delay:.08s}.rv-d2{transition-delay:.16s}.rv-d3{transition-delay:.24s}
.wrap{max-width:1000px;margin:0 auto;padding:0 32px}

/* NAV */
.nav{height:60px;border-bottom:1px solid var(--line);background:rgba(253,253,254,.9);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);position:sticky;top:0;z-index:100}
.nav .inner{display:flex;align-items:center;height:100%;max-width:1000px;margin:0 auto;padding:0 32px}
.logo{display:flex;align-items:center;gap:9px}
.logo-mark{width:30px;height:30px;background:var(--red);border-radius:3px;display:grid;place-items:center;box-shadow:0 2px 8px rgba(199,0,11,.2)}
.logo-mark svg{width:18px;height:18px}
.logo b{font-size:16px;font-weight:700;letter-spacing:-.02em}
.nav-r{margin-left:auto;display:flex;gap:10px;align-items:center}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:7px 18px;font-size:13px;font-weight:600;border-radius:var(--r);border:1px solid transparent;transition:all .2s var(--ease);cursor:pointer;letter-spacing:-.01em}
.btn.ghost{color:var(--ink3)}.btn.ghost:hover{color:var(--ink);background:var(--bg2)}
.btn.primary{background:var(--red);color:#fff;border-color:var(--red);box-shadow:0 2px 8px rgba(199,0,11,.18)}.btn.primary:hover{background:var(--red-deep);transform:translateY(-1px);box-shadow:0 4px 16px rgba(199,0,11,.25)}
.btn.xl{padding:12px 28px;font-size:14px;border-radius:8px}
.btn.outline{border-color:var(--line);color:var(--ink3)}.btn.outline:hover{border-color:var(--ink4);color:var(--ink)}

/* HERO */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle,var(--line) 1px,transparent 1px);background-size:28px 28px;opacity:.4;pointer-events:none}
.hero-glow{position:absolute;top:-140px;right:-100px;width:480px;height:480px;background:radial-gradient(circle,rgba(199,0,11,.06) 0%,transparent 60%);pointer-events:none;animation:gd 14s ease-in-out infinite alternate}
.hero-glow.g2{top:auto;bottom:-80px;left:-60px;right:auto;width:320px;height:320px;background:radial-gradient(circle,rgba(37,99,235,.04) 0%,transparent 60%);animation-delay:-7s}
@keyframes gd{0%{transform:translate(0,0)}100%{transform:translate(16px,-16px)}}
.hero .wrap{position:relative;padding:72px 32px 68px;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.hero-l h1{font-size:38px;font-weight:700;line-height:1.18;margin:0 0 18px;letter-spacing:-.03em}
.hero-l h1 em{font-style:normal;color:var(--red);position:relative;display:inline-block}
.hero-l h1 em::after{content:"";position:absolute;left:-2px;right:-2px;bottom:2px;height:9px;background:var(--red-light);border-radius:2px;z-index:-1}
.hero-l .ld{font-size:15px;color:var(--ink3);margin:0 0 30px;line-height:1.8;max-width:420px}
.hc{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.hsub{margin-top:14px;font-size:12px;color:var(--ink4);font-family:var(--mono);font-weight:500}

/* VIDEO */

.video-wrap{position:relative;width:100%;padding-bottom:62%;border-radius:var(--rl);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);background:#000}
.video-wrap iframe{position:absolute;top:0;left:0;width:100%;height:100%}

/* MOCKUP (unused but kept for reference) */
.mk{border:1px solid var(--line);background:#fff;overflow:hidden;border-radius:var(--rl);box-shadow:var(--shadow)}
.mk-bar{display:flex;align-items:center;gap:7px;padding:0 13px;height:34px;background:var(--bg2);border-bottom:1px solid var(--line)}
.mk-bar i{width:10px;height:10px;border-radius:50%}.mk-bar i:nth-child(1){background:#ff5f57}.mk-bar i:nth-child(2){background:#febc2e}.mk-bar i:nth-child(3){background:#28c840}
.mk-bar span{font-family:var(--mono);font-size:10px;color:var(--ink4);margin-left:8px;font-weight:500}
.mk-body{display:grid;grid-template-columns:1fr 180px;min-height:270px}
.mk-cv{position:relative;background:#fff}.mk-cv::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle,var(--line2) 1px,transparent 1px);background-size:18px 18px;opacity:.5}
.mk-m{position:absolute;background:#fff;border:1px solid var(--line);font-family:var(--mono);font-size:8.5px;color:var(--ink3);padding:5px 9px;border-radius:4px;display:flex;align-items:center;gap:5px;z-index:1;font-weight:500;box-shadow:0 1px 3px rgba(0,0,0,.04);transition:all .3s var(--ease)}
.mk-m:hover{transform:translateY(-1px);box-shadow:0 2px 6px rgba(0,0,0,.07)}
.mk-m.chip{top:36px;left:36px;border-color:var(--red);color:var(--red)}.mk-m.chip::before{content:"";width:6px;height:6px;background:var(--red);border-radius:1px}
.mk-m.oled{top:118px;left:24px}.mk-m.oled::before{content:"\25B0";font-size:8px;color:var(--ink4)}
.mk-m.servo{top:74px;left:128px}.mk-m.servo::before{content:"\25CE";font-size:8px;color:var(--ink4)}
.mk-wire{position:absolute;inset:0;width:100%;height:100%;z-index:0}.mk-wire line{stroke:var(--red);stroke-width:.8;stroke-dasharray:4 3;opacity:.25}
.mk-p{background:#fafbfc;border-left:1px solid var(--line2);padding:10px 12px;display:flex;flex-direction:column;gap:4px}
.mk-p .pt{font-size:9px;color:var(--ink4);font-family:var(--mono);font-weight:600;letter-spacing:.06em;margin-bottom:4px}
.mk-p .cl{font-size:9px;font-family:var(--mono);color:var(--ink3);line-height:1.6;display:flex;gap:4px;font-weight:500}
.mk-p .cl .ln{color:var(--ink4);width:14px;text-align:right;flex-shrink:0}
.mk-p .cl .kw{color:var(--red)}.mk-p .cl .fn{color:var(--blue)}.mk-p .cl .cm{color:var(--ink4);font-style:italic}.mk-p .cl .s{color:var(--green)}
.blink{display:inline-block;width:1px;height:10px;background:var(--red);animation:bk .9s step-end infinite;vertical-align:middle}
@keyframes bk{50%{opacity:0}}
.mk-dk{display:flex;border-top:1px solid var(--line);background:#fafbfc;height:62px;font-family:var(--mono);font-size:8.5px}
.mk-dk .log{flex:1;padding:8px 10px}.mk-dk .log .ll{color:var(--ink3);line-height:1.7;display:flex;gap:6px;font-weight:500}.mk-dk .log .ll .ts{color:var(--ink4)}.mk-dk .log .ll .ok{color:var(--green)}

/* FEATURES */
.feat{padding:72px 0;border-bottom:1px solid var(--line)}
.feat-row{margin-bottom:20px;padding:32px 28px;background:#fff;border:1px solid var(--line);border-radius:var(--rl);display:flex;gap:20px;align-items:flex-start;transition:all .3s var(--ease)}
.feat-row:hover{box-shadow:var(--shadow);border-color:#d0d2da}
.feat-row:last-child{margin-bottom:0}



.feat-icon{width:44px;height:44px;flex-shrink:0;display:grid;place-items:center;background:var(--red-light);color:var(--red);border-radius:var(--r)}
.feat-icon svg{width:22px;height:22px}
.feat-num{font-family:var(--mono);font-size:11px;color:var(--red);font-weight:600;margin-bottom:6px}
.feat-text h3{font-size:18px;font-weight:700;margin:0 0 12px;letter-spacing:-.01em}
.feat-text p{font-size:14px;color:var(--ink3);margin:0;line-height:1.85}



/* STORY */
.story{padding:72px 0;border-bottom:1px solid var(--line)}
.story-inner{max-width:600px;margin:0 auto;display:grid;grid-template-columns:3px 1fr;gap:28px;align-items:start}
.story-bar{background:var(--red);border-radius:2px;align-self:stretch;margin-top:6px}
.story-b p{font-size:15px;color:var(--ink3);margin:0 0 14px;line-height:1.85}
.story-b p:last-of-type{margin-bottom:0}
.story-b .sig{margin-top:22px;font-family:var(--mono);font-size:13px;color:var(--ink4);font-weight:500}.story-b .sig span{color:var(--red);font-weight:600}

/* COMM */
.comm{padding:72px 0;background:var(--bg2);border-bottom:1px solid var(--line)}
.comm-head{text-align:center;margin-bottom:32px}
.comm-head h2{font-size:26px;font-weight:700;margin:0 0 8px;letter-spacing:-.02em}
.comm-head p{font-size:14px;color:var(--ink3);margin:0}
.cr{display:flex;gap:16px;flex-wrap:wrap;max-width:560px;margin:0 auto}
.cc{flex:1;min-width:220px;background:#fff;border:1px solid var(--line);border-radius:var(--rl);padding:28px;text-align:center;transition:all .2s}
.cc:hover{border-color:var(--ink4);box-shadow:var(--shadow)}
.cc .qr{width:120px;height:120px;background:var(--bg2);border:1px solid var(--line);border-radius:var(--r);margin:0 auto 14px;display:grid;place-items:center}
.cc .qr span{font-size:10px;color:var(--ink4);font-family:var(--mono);line-height:1.4}
.cc .cl{font-size:13px;color:var(--ink2);font-weight:600}
.cc .cls{font-size:11px;color:var(--ink4);margin-top:4px;font-family:var(--mono)}
.ce{flex:1;min-width:220px;background:#fff;border:1px solid var(--line);border-radius:var(--rl);padding:28px;display:flex;flex-direction:column;justify-content:center;transition:all .2s}
.ce:hover{border-color:var(--ink4);box-shadow:var(--shadow)}
.ce .ml{font-size:13px;color:var(--ink2);margin-bottom:10px;font-weight:500}
.ce a{font-family:var(--mono);font-size:16px;color:var(--red);font-weight:600}
.ce .ms{font-size:12px;color:var(--ink4);margin-top:12px;line-height:1.65}

/* FOOT */
.foot{padding:28px 0;text-align:center}
.foot p{font-size:11px;color:var(--ink4);margin:0;font-family:var(--mono)}

@media(max-width:767px){
.hero .wrap{grid-template-columns:1fr;gap:32px;padding:44px 24px 40px}.hero-l h1{font-size:28px}
.mk-body{grid-template-columns:1fr;min-height:180px}.mk-p{display:none}

.sg{grid-template-columns:1fr;gap:14px}.sg::before{display:none}
.story-inner{gap:20px}
.cr{flex-direction:column}
}
@media(min-width:768px) and (max-width:1023px){.hero .wrap{gap:32px}.hero-l h1{font-size:30px}}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none}}