*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
html,body{width:100%;overflow-x:hidden}
body{-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
::selection{background:rgba(229,36,43,.55);color:#fff}

:root{
  --bg:#040914; --ink:#0a1326; --ink2:#0e1a33; --line:rgba(140,170,255,.10); --line2:rgba(140,170,255,.18);
  --fg:#e9eef8; --mute:#8893ad; --dim:#5a6580;
  --red:#ff2d3a; --red2:#e5242b; --cyan:#3fe3ff; --blue:#3d7bff;
  --l1:#2fd67b; --l2:#8fd63a; --l3:#f5c542; --l4:#ff8a2d; --l5:#ff2d3a;
  --mono:'JetBrains Mono',ui-monospace,monospace;
  --sans:'Pretendard Variable',Pretendard,-apple-system,'Apple SD Gothic Neo',sans-serif;
  --wrap:1240px;
}
html{background:var(--bg)}
body{background:var(--bg);color:var(--fg);font-family:var(--sans);font-weight:400;letter-spacing:-.01em;word-break:keep-all;line-height:1.6}

/* ── Background ───────────────────────── */
#ai-bg{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
.bg-glow{position:fixed;inset:0;pointer-events:none;z-index:0;background:
  radial-gradient(ellipse 60% 50% at 78% 12%,rgba(61,123,255,.16),transparent 60%),
  radial-gradient(ellipse 50% 40% at 10% 85%,rgba(63,227,255,.08),transparent 60%),
  radial-gradient(ellipse 40% 30% at 50% 40%,rgba(229,36,43,.06),transparent 70%)}
.bg-grid{position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(120,160,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(120,160,255,.045) 1px,transparent 1px);
  background-size:72px 72px;mask-image:radial-gradient(ellipse at 50% 20%,#000 10%,transparent 70%);-webkit-mask-image:radial-gradient(ellipse at 50% 20%,#000 10%,transparent 70%)}
main,header,footer{position:relative;z-index:2}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 32px}

/* ── Header ───────────────────────── */
header{position:sticky;top:0;z-index:50;border-bottom:1px solid transparent;transition:background .3s,border-color .3s}
header.scrolled{background:rgba(4,9,20,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-color:var(--line)}
.nav{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:24px;height:72px}
.logo{display:flex;align-items:baseline;gap:10px;font-weight:800;font-size:22px;letter-spacing:-.03em}
.logo .r{color:var(--red)}
.logo small{font:500 10px/1 var(--mono);letter-spacing:.14em;color:var(--mute);text-transform:uppercase}
nav.menu{display:flex;gap:2px;justify-self:center;font-size:14px;color:var(--mute)}
nav.menu a{padding:8px 13px;border-radius:99px;transition:.25s;white-space:nowrap}
nav.menu a:hover,nav.menu a.on{color:var(--fg);background:rgba(255,255,255,.05)}
.nav-r{display:flex;align-items:center;gap:10px}
.lang{display:flex;border:1px solid var(--line2);border-radius:99px;padding:3px;font:500 11px/1 var(--mono);letter-spacing:.06em}
.lang button{padding:6px 10px;border-radius:99px;color:var(--mute);transition:.2s}
.lang button.on{background:var(--fg);color:var(--bg)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:99px;font-size:14px;font-weight:600;transition:.25s;white-space:nowrap}
.btn-red{background:var(--red2);color:#fff;box-shadow:0 0 0 1px rgba(255,255,255,.08) inset,0 8px 30px rgba(229,36,43,.35)}
.btn-red:hover{background:var(--red);box-shadow:0 0 0 1px rgba(255,255,255,.15) inset,0 10px 40px rgba(255,45,58,.5);transform:translateY(-1px)}
.btn-ghost{border:1px solid var(--line2);color:var(--fg)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);box-shadow:0 0 24px rgba(63,227,255,.15)}
.burger{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line2)}
.burger span{display:block;width:16px;height:1.5px;background:var(--fg);margin:4px auto}

/* ── Hero ───────────────────────── */
.hero{min-height:calc(100vh - 72px);display:grid;align-items:center;padding:60px 0 80px}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:10px;padding:6px 14px 6px 6px;border:1px solid rgba(63,227,255,.3);border-radius:99px;background:rgba(63,227,255,.05);font:500 11px/1 var(--mono);color:#a9f2ff;letter-spacing:.12em;text-transform:uppercase;margin-bottom:32px}
.eyebrow b{padding:4px 10px;background:var(--red2);border-radius:99px;color:#fff;font-weight:600}
.hero h1{font-weight:800;letter-spacing:-.045em;line-height:1;margin-bottom:28px}
.hero h1 .k{display:block;font-size:clamp(24px,2.6vw,36px);font-weight:600;letter-spacing:-.03em;color:#c9d3ea;margin-bottom:14px}
.hero h1 .brand{display:block;font-size:clamp(72px,10vw,150px)}
.hero h1 .brand .r{color:var(--red);text-shadow:0 0 60px rgba(255,45,58,.5)}
.hero h1 .brand sup{font:500 .16em/1 var(--mono);letter-spacing:.05em;color:var(--cyan);vertical-align:top;margin-left:10px;position:relative;top:.9em}
.hero .lead{font-size:clamp(17px,1.5vw,21px);color:#b7c1d9;max-width:560px;margin-bottom:40px;text-wrap:pretty}
.hero .lead strong{color:#fff;font-weight:700}
.hero-ctas{display:flex;gap:12px;flex-wrap:wrap}
.hero-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:48px}
.hero-tags span{font:500 11px/1 var(--mono);letter-spacing:.1em;color:var(--mute);padding:8px 12px;border:1px solid var(--line);border-radius:6px;background:rgba(10,19,38,.5)}

/* Shield core */
.core{position:relative;width:min(500px,100%);aspect-ratio:1;margin:0 auto}
.core .ring{position:absolute;border-radius:50%;border:1px solid rgba(63,227,255,.18)}
.core .r1{inset:0;border-style:dashed;animation:spin 60s linear infinite}
.core .r2{inset:9%;border-color:rgba(61,123,255,.25);animation:spin 40s linear infinite reverse}
.core .r3{inset:20%;border-color:rgba(255,45,58,.3);box-shadow:0 0 60px rgba(255,45,58,.12) inset}
.core .r2::before,.core .r1::before{content:"";position:absolute;top:-4px;left:50%;width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 14px var(--cyan)}
.core .r2::before{background:var(--red);box-shadow:0 0 14px var(--red);top:auto;bottom:-4px}
.core .sweep{position:absolute;inset:9%;border-radius:50%;background:conic-gradient(from 0deg,transparent 0 300deg,rgba(63,227,255,.22) 355deg,transparent 360deg);animation:spin 5s linear infinite;mask:radial-gradient(circle,transparent 30%,#000 31%);-webkit-mask:radial-gradient(circle,transparent 30%,#000 31%)}
.core .orb{position:absolute;inset:30%;border-radius:50%;background:radial-gradient(circle at 35% 30%,#2a4a9a,#0b1633 55%,#050a18 80%);box-shadow:0 0 0 1px rgba(120,170,255,.25),0 0 80px rgba(61,123,255,.4),0 0 160px rgba(63,227,255,.15);display:grid;place-items:center;animation:float 7s ease-in-out infinite}
.core .orb b{font-weight:900;font-size:clamp(70px,9vw,120px);color:var(--red);line-height:1;text-shadow:0 0 40px rgba(255,45,58,.6);letter-spacing:-.05em}
.core .tag{position:absolute;font:500 10px/1.5 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--mute);padding:8px 12px;background:rgba(4,9,20,.75);backdrop-filter:blur(8px);border:1px solid var(--line2);border-radius:8px;white-space:nowrap}
.core .tag b{display:block;color:var(--cyan);font-weight:600;font-size:12px}
.core .tag.t1{top:10%;left:-4%}
.core .tag.t2{top:44%;right:-8%}
.core .tag.t3{bottom:6%;left:8%}
.core .tag.t3 b{color:var(--red)}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes float{50%{transform:translateY(-12px)}}

/* ── Sections ───────────────────────── */
section.s{padding:140px 0;border-top:1px solid var(--line)}
.s-label{font:500 11px/1 var(--mono);letter-spacing:.2em;text-transform:uppercase;color:var(--cyan);display:flex;align-items:center;gap:14px;margin-bottom:28px}
.s-label::before{content:"";width:40px;height:1px;background:linear-gradient(90deg,var(--cyan),transparent)}
.s-label i{font-style:normal;color:var(--red)}
.s h2{font-size:clamp(34px,4.4vw,58px);font-weight:700;line-height:1.15;letter-spacing:-.04em;margin-bottom:20px;max-width:980px;text-wrap:balance}
.s h2 em{font-style:normal;background:linear-gradient(100deg,var(--cyan),#7aa6ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.s h2 em.red{background:linear-gradient(100deg,#ff5a63,var(--red));-webkit-background-clip:text;background-clip:text}
.s .sub{font-size:18px;color:var(--mute);max-width:760px;text-wrap:pretty;margin-bottom:64px}
.panel{background:linear-gradient(180deg,rgba(14,26,51,.6),rgba(8,14,30,.75));border:1px solid var(--line);border-radius:20px;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}

/* VS */
.vs{display:grid;grid-template-columns:1fr auto 1fr;gap:0;align-items:stretch}
.vs-col{padding:40px}
.vs-col h3{font-size:22px;font-weight:700;letter-spacing:-.02em;margin-bottom:6px}
.vs-col .tagline{font:500 11px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;margin-bottom:28px;display:block}
.vs-col ul{list-style:none;display:grid;gap:2px}
.vs-col li{display:grid;grid-template-columns:22px 1fr;gap:10px;padding:13px 0;border-bottom:1px solid var(--line);font-size:15px;line-height:1.5}
.vs-col li:last-child{border-bottom:0}
.vs-col li::before{font:600 12px/1.6 var(--mono)}
.vs-old{opacity:.9}
.vs-old .tagline{color:var(--dim)}
.vs-old li{color:var(--mute)}
.vs-old li::before{content:"✕";color:#5c6784}
.vs-new{background:linear-gradient(160deg,rgba(61,123,255,.12),rgba(229,36,43,.07));border-left:1px solid var(--line2);border-radius:0 20px 20px 0}
.vs-new .tagline{color:var(--cyan)}
.vs-new li::before{content:"●";color:var(--cyan);font-size:9px;line-height:2.6}
.vs-mid{display:grid;place-items:center;width:0;position:relative}
.vs-mid span{position:absolute;width:56px;height:56px;border-radius:50%;background:var(--red2);display:grid;place-items:center;font:700 15px/1 var(--mono);box-shadow:0 0 0 6px var(--bg),0 0 40px rgba(229,36,43,.6);z-index:2}
.vs-result{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:20px}
.vs-result div{padding:22px 24px;border:1px solid var(--line);border-radius:14px;background:rgba(10,19,38,.5);display:flex;align-items:center;gap:14px;font-weight:600}
.vs-result div::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--red);box-shadow:0 0 12px var(--red);flex:none}

/* Core tech */
.zt{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:28px 36px;margin-bottom:20px;flex-wrap:wrap}
.zt .zt-t{font:600 13px/1 var(--mono);letter-spacing:.2em;color:var(--cyan)}
.zt .zt-t small{display:block;color:var(--mute);font-weight:400;letter-spacing:.16em;margin-top:8px;font-size:11px}
.zt p{font-size:18px;font-weight:600}
.zt .chips{display:flex;gap:8px}
.zt .chips span{font:600 12px/1 var(--mono);padding:9px 14px;border-radius:8px;border:1px solid var(--line2);letter-spacing:.06em}
.tech3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:100px}
.tcard{padding:36px 32px;position:relative;overflow:hidden;transition:.35s}
.tcard:hover{border-color:rgba(63,227,255,.35);transform:translateY(-3px)}
.tcard .no{font:500 12px/1 var(--mono);color:var(--dim);letter-spacing:.14em;display:flex;justify-content:space-between;margin-bottom:56px}
.tcard .no b{color:var(--cyan);font-weight:600}
.tcard h3{font-size:24px;font-weight:700;letter-spacing:-.03em;margin-bottom:12px}
.tcard p{color:var(--mute);font-size:15px;text-wrap:pretty}
.tcard .glyph{position:absolute;right:-10px;top:30px;font:800 120px/1 var(--sans);color:rgba(120,160,255,.05);letter-spacing:-.06em}

.sub-h{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:28px;flex-wrap:wrap}
.sub-h h3{font-size:clamp(24px,2.4vw,32px);font-weight:700;letter-spacing:-.03em}
.sub-h h3 small{display:block;font:500 11px/1 var(--mono);letter-spacing:.18em;color:var(--red);margin-bottom:12px;text-transform:uppercase}
.sub-h p{color:var(--mute);max-width:520px;font-size:15px}

/* Traceback */
.trace{padding:36px;margin-bottom:100px}
.trace-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;gap:16px;flex-wrap:wrap}
.mode{display:flex;gap:6px;background:rgba(0,0,0,.25);padding:4px;border-radius:99px;border:1px solid var(--line)}
.mode button{padding:8px 16px;border-radius:99px;font-size:13px;color:var(--mute);transition:.2s}
.mode button.on{background:rgba(255,255,255,.08);color:var(--fg)}
.mode button.on[data-mode="attack"]{background:rgba(229,36,43,.2);color:#ffb3b8}
.mode button.on[data-mode="normal"]{background:rgba(47,214,123,.16);color:#a9f5c9}
.replay{font:500 12px/1 var(--mono);color:var(--mute);letter-spacing:.08em;padding:9px 14px;border:1px solid var(--line2);border-radius:99px}
.replay:hover{color:var(--cyan);border-color:var(--cyan)}
#traceSvg{width:100%;height:auto;overflow:visible}
#traceSvg .node rect{fill:#0b1530;stroke:rgba(140,170,255,.25);stroke-width:1.2;transition:.4s}
#traceSvg .node text{fill:var(--fg);font-family:var(--sans);font-weight:700;font-size:15px;text-anchor:middle}
#traceSvg .node text.s{fill:var(--mute);font-family:var(--mono);font-weight:400;font-size:10.5px;letter-spacing:.08em}
#traceSvg .node.hot rect{stroke:var(--red);fill:#2a0c14;filter:drop-shadow(0 0 14px rgba(255,45,58,.6))}
#traceSvg .node.ok rect{stroke:var(--l1);fill:#082418;filter:drop-shadow(0 0 14px rgba(47,214,123,.45))}
#traceSvg .node.rm rect{stroke:var(--cyan);fill:#07223a;filter:drop-shadow(0 0 18px rgba(63,227,255,.5))}
#traceSvg .edge{stroke:rgba(140,170,255,.2);stroke-width:1.5;stroke-dasharray:4 6;fill:none}
#traceSvg .edge.live{stroke:rgba(63,227,255,.6);animation:dash 1s linear infinite}
#traceSvg .edge.back{stroke:var(--red);stroke-dasharray:6 5;animation:dashR .6s linear infinite}
@keyframes dash{to{stroke-dashoffset:-20}}
@keyframes dashR{to{stroke-dashoffset:-22}}
#traceSvg .pkt{transition:transform 1s cubic-bezier(.5,0,.3,1),opacity .3s}
#traceSvg .stamp{opacity:0;transition:.4s}
#traceSvg .stamp.on{opacity:1}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:24px}
.step{padding:18px 20px;border-radius:12px;border:1px solid var(--line);background:rgba(0,0,0,.2);transition:.35s;opacity:.45}
.step.on{opacity:1;border-color:rgba(63,227,255,.4);background:rgba(63,227,255,.06)}
.step .n{font:600 11px/1 var(--mono);color:var(--cyan);letter-spacing:.12em;margin-bottom:10px}
.step h4{font-size:16px;font-weight:700;margin-bottom:4px}
.step p{font-size:13px;color:var(--mute);line-height:1.5}

/* SMTP */
.smtp{display:grid;grid-template-columns:.8fr 1.2fr;gap:20px;margin-bottom:100px}
.smtp-side{padding:32px;display:flex;flex-direction:column;gap:12px}
.smtp-side .lbl{font:500 11px/1 var(--mono);letter-spacing:.16em;color:var(--mute);margin-bottom:6px;text-transform:uppercase}
.scase{display:grid;grid-template-columns:64px 1fr;gap:16px;align-items:center;text-align:left;padding:18px;border-radius:14px;border:1px solid var(--line);background:rgba(0,0,0,.2);transition:.25s}
.scase:hover{border-color:var(--line2)}
.scase .code{font:700 26px/1 var(--mono);letter-spacing:-.02em}
.scase[data-c="250"] .code{color:var(--l1)}
.scase[data-c="550"] .code,.scase[data-c="553"] .code{color:var(--red)}
.scase b{display:block;font-size:15px}
.scase span{font-size:13px;color:var(--mute)}
.scase.on{border-color:currentColor}
.scase[data-c="250"].on{border-color:var(--l1);background:rgba(47,214,123,.07)}
.scase[data-c="550"].on,.scase[data-c="553"].on{border-color:var(--red);background:rgba(229,36,43,.08)}
.smtp-note{font-size:12px;color:var(--dim);margin-top:auto;padding-top:8px}
.term{padding:0;overflow:hidden;display:flex;flex-direction:column;min-height:440px}
.term-bar{display:flex;align-items:center;gap:8px;padding:14px 18px;border-bottom:1px solid var(--line);font:500 11px/1 var(--mono);color:var(--mute);letter-spacing:.08em}
.term-bar i{width:10px;height:10px;border-radius:50%;background:#26324d}
.term-bar span{margin-left:10px}
.term pre{flex:1;padding:22px 24px;font:400 13px/1.85 var(--mono);color:#b9c6e4;white-space:pre-wrap;word-break:break-all}
.term pre .c{color:var(--dim)}
.term pre .o{color:#7aa6ff}
.term pre .i{color:#d6def0}
.term pre .g{color:var(--l1)}
.term pre .r{color:var(--red)}
.term pre .y{color:var(--l3)}
.term pre .cur{display:inline-block;width:8px;height:15px;background:var(--cyan);vertical-align:-2px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.verdict{margin:0 24px 24px;padding:16px 20px;border-radius:12px;display:flex;justify-content:space-between;align-items:center;gap:12px;opacity:0;transform:translateY(8px);transition:.4s;font-weight:700}
.verdict.on{opacity:1;transform:none}
.verdict.ok{background:rgba(47,214,123,.1);border:1px solid rgba(47,214,123,.4);color:#b4f5d0}
.verdict.bad{background:rgba(229,36,43,.12);border:1px solid rgba(255,45,58,.45);color:#ffc2c6}
.verdict small{font:500 11px/1 var(--mono);letter-spacing:.12em}

/* Levels */
.levels{display:grid;gap:10px}
.lv{display:grid;grid-template-columns:120px 1.1fr 1.4fr 1fr;align-items:center;gap:24px;padding:20px 28px;border-radius:14px;border:1px solid var(--line);background:rgba(10,19,38,.55);position:relative;overflow:hidden}
.lv::before{content:"";position:absolute;left:0;top:0;bottom:0;width:var(--w);background:linear-gradient(90deg,color-mix(in oklab,var(--c) 18%,transparent),transparent);pointer-events:none}
.lv > *{position:relative}
.lv .lvn{display:flex;align-items:center;gap:12px}
.lv .lvn b{font:800 34px/1 var(--sans);color:var(--c);letter-spacing:-.04em}
.lv .lvn span{font:500 10px/1.3 var(--mono);letter-spacing:.1em;color:var(--mute)}
.lv h4{font-size:17px;font-weight:700}
.lv h4 small{display:block;font-size:13px;color:var(--mute);font-weight:400;margin-top:2px}
.lv .types{font-size:13.5px;color:#b7c1d9}
.lv .act{justify-self:end;font:600 12px/1 var(--mono);padding:9px 12px;border-radius:8px;color:var(--c);border:1px solid color-mix(in oklab,var(--c) 45%,transparent);background:color-mix(in oklab,var(--c) 8%,transparent);white-space:nowrap}

/* Mailbox demo */
.mb{display:grid;grid-template-columns:1.25fr 1fr;overflow:hidden}
.mb-list{border-right:1px solid var(--line)}
.mb-head{display:flex;justify-content:space-between;align-items:center;padding:18px 24px;border-bottom:1px solid var(--line);font:500 11px/1 var(--mono);letter-spacing:.12em;color:var(--mute)}
.mb-head b{color:var(--fg);font-family:var(--sans);font-size:15px;letter-spacing:-.01em}
.mail{display:grid;grid-template-columns:auto 1fr auto;gap:14px;width:100%;text-align:left;padding:22px 24px;border-bottom:1px solid var(--line);transition:.25s;position:relative}
.mail:last-child{border-bottom:0}
.mail:hover{background:rgba(255,255,255,.02)}
.mail.on{background:rgba(63,227,255,.05)}
.mail.on::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c)}
.mail .av{width:40px;height:40px;border-radius:50%;background:#16223f;display:grid;place-items:center;font-weight:700;font-size:14px;color:#c9d3ea}
.mail .from{font-size:14px;font-weight:600}
.mail .from span{color:var(--mute);font-weight:400;font-family:var(--mono);font-size:12px;margin-left:6px}
.mail .subj{font-size:15px;margin:4px 0 4px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.mail .prev{font-size:13px;color:var(--mute);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.mail .time{font:400 12px/1 var(--mono);color:var(--dim)}
.rtag{display:inline-flex;align-items:center;gap:6px;font:600 11px/1 var(--sans);padding:5px 9px;border-radius:6px;color:var(--c);background:color-mix(in oklab,var(--c) 14%,transparent);border:1px solid color-mix(in oklab,var(--c) 40%,transparent);white-space:nowrap}
.rtag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c);box-shadow:0 0 8px var(--c)}
.mail.blocked .subj,.mail.blocked .prev{opacity:.75}
.mb-detail{padding:28px;display:flex;flex-direction:column;gap:20px}
.mb-detail .dh{display:flex;justify-content:space-between;align-items:center}
.mb-detail .dh span{font:500 11px/1 var(--mono);letter-spacing:.14em;color:var(--mute)}
.meter{height:8px;border-radius:99px;background:rgba(255,255,255,.06);overflow:hidden}
.meter i{display:block;height:100%;border-radius:99px;background:var(--c);box-shadow:0 0 16px var(--c);transition:width .6s cubic-bezier(.2,.7,.2,1)}
.meter-l{display:flex;justify-content:space-between;font:400 10px/1 var(--mono);color:var(--dim);margin-top:8px;letter-spacing:.06em}
.kv{display:grid;gap:0;border-top:1px solid var(--line)}
.kv div{display:grid;grid-template-columns:110px 1fr;gap:14px;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px}
.kv dt{color:var(--mute);font-size:13px}
.kv dd{font-weight:600}
.alert{padding:14px 16px;border-radius:10px;font-size:13.5px;background:rgba(229,36,43,.1);border:1px solid rgba(255,45,58,.35);color:#ffc2c6;display:none}
.alert.on{display:block}
.mb-caption{margin-top:18px;font-size:14px;color:var(--mute);display:flex;gap:10px;align-items:center}
.mb-caption::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan)}

/* Features */
.feat{display:flex;flex-direction:column;gap:16px}
.ftabs{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}
.ftab{display:grid;grid-template-columns:28px 1fr;align-items:center;gap:10px;padding:16px 16px;border-radius:14px;border:1px solid var(--line);background:rgba(10,19,38,.45);text-align:left;transition:.25s}
.ftab .fi{font:600 12px/1 var(--mono);color:var(--dim)}
.ftab b{font-size:15px;font-weight:600;display:block}
.ftab small{font:400 11px/1.3 var(--mono);color:var(--dim);letter-spacing:.06em}
.ftab:hover{border-color:var(--line2)}
.ftab.on{border-color:rgba(255,45,58,.5);background:linear-gradient(100deg,rgba(229,36,43,.14),rgba(10,19,38,.5))}
.ftab.on .fi{color:var(--red)}
.fbody{padding:44px;display:flex;flex-direction:column}
.fbody .ftag{font:500 11px/1 var(--mono);letter-spacing:.18em;color:var(--red);text-transform:uppercase;margin-bottom:16px}
.fbody h3{font-size:clamp(24px,2.4vw,32px);font-weight:700;letter-spacing:-.03em;line-height:1.3;margin-bottom:12px;text-wrap:balance}
.fbody .fdesc{color:var(--mute);font-size:16px;margin-bottom:28px;text-wrap:pretty}
.fbody{padding:36px}
.fsplit{display:grid;grid-template-columns:1.2fr 1fr;gap:20px;margin-bottom:22px;align-items:start}
.fside{display:flex;flex-direction:column;gap:10px}
.fpoints{display:flex;flex-direction:column;gap:10px}
.fp{display:grid;grid-template-columns:28px 1fr;gap:14px;padding:18px 20px;border-radius:14px;border:1px solid var(--line);background:rgba(0,0,0,.2);transition:.25s}
.fp.hl{border-color:var(--red);background:rgba(229,36,43,.08)}
.fp .pn{width:28px;height:28px;border-radius:50%;background:var(--red2);display:grid;place-items:center;font:700 12px/1 var(--mono)}
.fp h4{font-size:16px;font-weight:700;margin-bottom:6px;line-height:28px}
.fp p{font-size:13.5px;color:var(--mute);line-height:1.6;text-wrap:pretty}
/* mail screenshot */
.mshot{margin:0;position:sticky;top:96px}
.mshot-cap{display:flex;justify-content:space-between;align-items:center;font:500 11px/1 var(--mono);letter-spacing:.14em;color:var(--cyan);margin-bottom:10px}
.mshot-cap .zoomhint{color:var(--dim);letter-spacing:.06em}
.mshot-img{position:relative;display:block;width:100%;padding:0;border-radius:12px;overflow:hidden;background:#fff;border:1px solid var(--line2);box-shadow:0 20px 60px rgba(0,0,0,.45),0 0 0 6px rgba(255,255,255,.03);cursor:zoom-in;transition:.3s}
.mshot-img:hover{box-shadow:0 20px 60px rgba(0,0,0,.45),0 0 0 6px rgba(63,227,255,.12)}
.mshot-img img,.lb-img img{width:100%;height:auto;display:block}
.mk{position:absolute;border:2px solid var(--red);border-radius:6px;background:rgba(255,45,58,.06);transition:.25s;pointer-events:auto}
.mk b{position:absolute;top:-11px;left:-11px;width:22px;height:22px;border-radius:50%;background:var(--red2);color:#fff;display:grid;place-items:center;font:700 11px/1 var(--mono);box-shadow:0 2px 8px rgba(0,0,0,.35)}
.mk b.br{left:auto;right:-11px}
.mk.hl{background:rgba(255,45,58,.16);box-shadow:0 0 0 4px rgba(255,45,58,.25),0 0 24px rgba(255,45,58,.45)}
.fbody .mshot-img .mk{opacity:.85}
/* sim cycle */
.cyc ol{list-style:none;display:grid;gap:8px;counter-reset:c}
.cyc li{position:relative;display:grid;grid-template-columns:78px 1fr;gap:4px 12px;align-items:center;padding:14px 18px;border-radius:12px;border:1px solid var(--line2);background:rgba(63,227,255,.04)}
.cyc li:not(:last-child)::after{content:"";position:absolute;left:38px;bottom:-9px;width:1px;height:9px;background:var(--cyan)}
.cyc .cn{font:600 11px/1 var(--mono);color:var(--cyan);letter-spacing:.1em;grid-row:span 2}
.cyc li b{font-size:15px}
.cyc li small{font-size:12.5px;color:var(--mute)}
.cyc-loop{margin-top:10px;font:500 12px/1 var(--mono);color:var(--cyan);text-align:center;padding:10px;border:1px dashed rgba(63,227,255,.35);border-radius:10px}
/* lightbox */
.lb{position:fixed;inset:0;z-index:100;background:rgba(2,5,12,.88);backdrop-filter:blur(8px);display:none;place-items:center;padding:40px;cursor:zoom-out}
.lb.on{display:grid}
.lb-in{max-width:min(1100px,94vw);max-height:90vh;overflow:auto;cursor:default}
.lb-img{position:relative;background:#fff;border-radius:10px;overflow:hidden}
.lb-t{color:var(--mute);font-size:14px;margin-top:12px;text-align:center}
.lb-x{position:fixed;top:20px;right:24px;width:44px;height:44px;border-radius:50%;border:1px solid var(--line2);background:rgba(10,19,38,.8);font-size:16px}
.lb-x:hover{border-color:var(--red)}
.fstats{display:grid;grid-template-columns:1fr;gap:10px;margin-bottom:0}
.fstats div{display:flex;align-items:baseline;gap:14px}
.fstats b{flex:none;min-width:92px}
.fstats div{padding:20px 22px;border-radius:14px;border:1px solid var(--line);background:rgba(0,0,0,.2)}
.fstats b{display:block;font-size:34px;font-weight:800;letter-spacing:-.04em;color:var(--cyan);line-height:1.1}
.fstats span{font-size:13px;color:var(--mute)}
.fconc{margin-top:auto;padding:18px 22px;border-radius:12px;background:rgba(63,227,255,.07);border:1px solid rgba(63,227,255,.3);font-weight:600;display:flex;gap:12px;align-items:center}
.fconc::before{content:"RealMail";font:700 12px/1 var(--mono);color:var(--bg);background:var(--cyan);padding:6px 9px;border-radius:6px;flex:none}
.fnote{font-size:12px;color:var(--dim);margin-top:12px}
.fbody.swap{animation:fin .45s ease}
@keyframes fin{from{opacity:0;transform:translateY(10px)}}

/* 16 tech */
.tgroup{margin-bottom:48px}
.tg-h{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.tg-h b{font:600 12px/1 var(--mono);letter-spacing:.18em;color:var(--cyan)}
.tg-h span{font-size:16px;font-weight:700}
.tg-h i{font:700 12px/1 var(--mono);font-style:normal;padding:5px 9px;border-radius:6px;background:rgba(63,227,255,.1);color:var(--cyan)}
.tg-h::after{content:"";flex:1;height:1px;background:var(--line)}
.tgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:18px;overflow:hidden}
.tc{padding:28px 26px;background:rgba(8,14,30,.88);transition:.3s;min-height:190px}
.tc:hover{background:rgba(20,34,66,.92)}
.tc .en{font:500 10.5px/1.3 var(--mono);letter-spacing:.08em;color:var(--dim);text-transform:uppercase;margin-bottom:14px;display:flex;justify-content:space-between;gap:8px}
.tc .en b{color:var(--red);font-weight:600}
.tc h4{font-size:18px;font-weight:700;margin-bottom:10px;letter-spacing:-.02em}
.tc p{font-size:13.5px;color:var(--mute);line-height:1.6;text-wrap:pretty}
.tgroup.op .tc .en b{color:var(--cyan)}

/* Comparison */
.cmp{overflow:hidden}
.cmp-legend{display:flex;gap:20px;justify-content:flex-end;font-size:13px;color:var(--mute);margin-bottom:14px;flex-wrap:wrap}
.cmp-legend span{display:flex;align-items:center;gap:8px}
.cmp-scroll{overflow-x:auto}
table.ct{width:100%;border-collapse:collapse;min-width:760px}
.ct th,.ct td{padding:15px 20px;border-bottom:1px solid var(--line);font-size:14.5px;text-align:center}
.ct thead th{font:600 13px/1 var(--mono);letter-spacing:.06em;color:var(--mute);padding:22px 20px;background:rgba(0,0,0,.25)}
.ct thead th.rm{color:#fff;background:linear-gradient(180deg,rgba(229,36,43,.35),rgba(229,36,43,.12));font-family:var(--sans);font-size:16px;font-weight:800;letter-spacing:-.02em}
.ct thead th.rm .r{color:#fff}
.ct td.rm{background:rgba(229,36,43,.06)}
.ct th.grp{font-size:13px;font-weight:600;color:var(--cyan);text-align:left;width:150px;vertical-align:top;padding-top:18px;border-right:1px solid var(--line)}
.ct td.f{text-align:left;color:#c9d3ea}
.ct tbody tr:hover td{background:rgba(255,255,255,.02)}
.ct tbody tr:hover td.rm{background:rgba(229,36,43,.1)}
.sym{display:inline-block;width:14px;height:14px;border-radius:50%;vertical-align:middle}
.sym.y{background:var(--red);box-shadow:0 0 10px rgba(255,45,58,.6)}
.sym.y.o{background:#c9d3ea;box-shadow:none}
.sym.p{background:linear-gradient(90deg,#c9d3ea 50%,transparent 50%);border:1.5px solid #c9d3ea}
.sym.n{position:relative;width:14px;height:14px}
.sym.n::before,.sym.n::after{content:"";position:absolute;left:50%;top:50%;width:12px;height:1.5px;background:#5c6784;transform:translate(-50%,-50%) rotate(45deg)}
.sym.n::after{transform:translate(-50%,-50%) rotate(-45deg)}
.ct .txt{font-size:13px;font-weight:600}
.cmp-foot{font-size:12px;color:var(--dim);margin-top:14px}

/* Contact */
.contact{padding:140px 0 120px;border-top:1px solid var(--line);position:relative;overflow:hidden}
.contact::before{content:"";position:absolute;top:30%;left:50%;width:900px;height:600px;background:radial-gradient(ellipse,rgba(229,36,43,.18),transparent 65%);transform:translate(-50%,-50%);pointer-events:none}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;position:relative}
.contact h2{font-size:clamp(40px,5.4vw,72px);font-weight:800;letter-spacing:-.045em;line-height:1.08;margin-bottom:24px;text-wrap:balance}
.contact h2 .r{color:var(--red)}
.contact .lead{color:#b7c1d9;font-size:18px;margin-bottom:36px;max-width:520px}
.cinfo{display:grid;gap:10px;margin-bottom:32px}
.cinfo a{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-radius:14px;border:1px solid var(--line2);background:rgba(10,19,38,.6);transition:.25s}
.cinfo a:hover{border-color:var(--red);background:rgba(229,36,43,.08)}
.cinfo a span{font:500 11px/1 var(--mono);letter-spacing:.14em;color:var(--mute)}
.cinfo a b{font-size:20px;font-weight:700;letter-spacing:-.01em}
.lic{padding:32px}
.lic h3{font:600 12px/1 var(--mono);letter-spacing:.18em;color:var(--cyan);margin-bottom:6px}
.lic .lt{font-size:22px;font-weight:700;margin-bottom:24px}
.lic-row{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center;padding:20px 0;border-top:1px solid var(--line)}
.lic-row h4{font-size:17px;font-weight:700}
.lic-row h4 small{font:500 11px/1 var(--mono);color:var(--mute);letter-spacing:.06em;margin-left:8px}
.lic-row p{font-size:13.5px;color:var(--mute);margin-top:4px}
.lic-row .ask{font:600 12px/1 var(--mono);padding:9px 14px;border-radius:99px;border:1px solid rgba(255,45,58,.5);color:#ffb3b8;white-space:nowrap}
.lic-row .ask:hover{background:rgba(229,36,43,.15)}
.lic .proc{margin-top:8px;padding:16px 18px;border-radius:12px;background:rgba(0,0,0,.25);font-size:13.5px;color:var(--mute)}
.lic .proc b{color:var(--fg)}

/* Footer */
footer{padding:64px 0 32px;border-top:1px solid var(--line);background:rgba(2,5,12,.7)}
.foot{display:grid;grid-template-columns:1.3fr 2fr;gap:48px}
.foot .motto{font-size:15px;color:var(--mute);margin-top:16px;max-width:320px}
.addr{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.addr h5{font:500 11px/1 var(--mono);letter-spacing:.18em;color:var(--cyan);margin-bottom:12px;text-transform:uppercase}
.addr p{font-size:14px;color:var(--mute);line-height:1.65}
.copy{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:48px;padding-top:24px;border-top:1px solid var(--line);font:400 12px/1.5 var(--mono);color:var(--dim)}
.copy a:hover{color:var(--fg)}

/* ── Modal (inquiry / catalog) ── */
.md{position:fixed;inset:0;z-index:120;background:rgba(2,5,12,.78);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);display:none;place-items:center;padding:24px;overflow-y:auto}
.md.on{display:grid;animation:mdIn .25s ease}
@keyframes mdIn{from{opacity:0}}
.md-box{position:relative;width:min(640px,100%);background:linear-gradient(180deg,#0d1a36,#070d1e);border:1px solid var(--line2);border-radius:20px;box-shadow:0 30px 100px rgba(0,0,0,.6),0 0 0 1px rgba(229,36,43,.08);padding:36px;margin:auto}
.md-box::before{content:"";position:absolute;left:36px;right:36px;top:0;height:2px;background:linear-gradient(90deg,var(--red),var(--cyan));border-radius:2px}
.md-x{position:absolute;top:16px;right:16px;width:40px;height:40px;border-radius:50%;border:1px solid var(--line2);color:var(--mute)}
.md-x:hover{color:var(--fg);border-color:var(--red)}
.md-h{margin-bottom:24px;padding-right:40px}
.md-k{font:500 11px/1 var(--mono);letter-spacing:.18em;color:var(--cyan)}
.md-h h3{font-size:26px;font-weight:800;letter-spacing:-.03em;margin:12px 0 8px}
.md-h p{color:var(--mute);font-size:14.5px}
.md-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 16px}
.md-f{display:flex;flex-direction:column;gap:7px}
.md-f.full{grid-column:1/-1}
.md-l{font-size:13px;font-weight:600;color:#c9d3ea;display:flex;gap:8px;align-items:center}
.md-l i{font:500 10px/1 var(--mono);font-style:normal;letter-spacing:.06em;color:var(--dim)}
.md-l i.r{color:var(--red)}
.md-f input,.md-f textarea{width:100%;font:inherit;font-size:15px;color:var(--fg);background:rgba(0,0,0,.3);border:1px solid var(--line2);border-radius:10px;padding:12px 14px;outline:none;transition:.2s;resize:vertical}
.md-f input::placeholder,.md-f textarea::placeholder{color:#4a5572}
.md-f input:focus,.md-f textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(63,227,255,.12)}
.md-f .bad{border-color:var(--red);box-shadow:0 0 0 3px rgba(255,45,58,.14)}
.md-hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;opacity:0}
.md-agree{margin-top:20px;border:1px solid var(--line);border-radius:12px;background:rgba(0,0,0,.2);padding:6px 16px}
.md-c{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 0}
.md-c+.md-terms+.md-c,.md-terms+.md-c{border-top:1px solid var(--line)}
.md-c label{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;cursor:pointer;line-height:1.5}
.md-c input{width:18px;height:18px;margin-top:1px;accent-color:var(--red2);flex:none}
.md-more{font:500 11px/1 var(--mono);color:var(--mute);padding:6px 10px;border:1px solid var(--line2);border-radius:99px;white-space:nowrap;flex:none}
.md-more:hover{color:var(--cyan);border-color:var(--cyan)}
.md-terms{display:none;font-size:12.5px;line-height:1.75;color:var(--mute);padding:12px 14px;margin:0 0 10px;border-radius:8px;background:rgba(0,0,0,.25)}
.md-terms.on{display:block}
.md-terms b{color:#c9d3ea;font-weight:600;margin-right:6px}
.md-err{min-height:20px;margin:14px 0 6px;font-size:13.5px;color:#ff8a90}
.md-submit{width:100%;justify-content:center;padding:15px 20px;font-size:15px}
.md-submit:disabled{opacity:.6;cursor:wait;transform:none}
.md-done{text-align:center;padding:24px 8px 8px}
.md-ok{width:64px;height:64px;margin:0 auto 20px;border-radius:50%;display:grid;place-items:center;font-size:28px;font-weight:700;color:var(--l1);border:1px solid rgba(47,214,123,.5);background:rgba(47,214,123,.1);box-shadow:0 0 40px rgba(47,214,123,.25)}
.md-done h3{font-size:24px;font-weight:800;letter-spacing:-.03em;margin-bottom:10px}
.md-done p{color:var(--mute);font-size:14.5px;max-width:440px;margin:0 auto}
.md-prev{margin-top:16px!important;padding:10px 14px;border-radius:8px;border:1px dashed rgba(245,197,66,.5);color:#f5d27a!important;font-size:12.5px!important}
.md-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:28px}
@media(max-width:600px){.md-box{padding:28px 20px}.md-grid{grid-template-columns:1fr}.md-box::before{left:20px;right:20px}}

/* ── Back to top ── */
.totop{position:fixed;right:28px;bottom:28px;z-index:60;width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:rgba(6,12,28,.85);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:0 10px 30px rgba(0,0,0,.45);opacity:0;transform:translateY(16px) scale(.9);pointer-events:none;transition:opacity .3s,transform .3s,box-shadow .3s}
.totop.on{opacity:1;transform:none;pointer-events:auto}
.totop svg{position:absolute;inset:0;width:100%;height:100%;transform:rotate(-90deg)}
.totop .tt-bg{fill:none;stroke:rgba(63,227,255,.18);stroke-width:2}
.totop .tt-ring{fill:none;stroke:var(--cyan);stroke-width:2;stroke-linecap:round;transition:stroke-dashoffset .1s linear;filter:drop-shadow(0 0 4px rgba(63,227,255,.6))}
.totop span{position:relative;font-size:20px;font-weight:700;color:var(--cyan);line-height:1;transition:transform .25s}
.totop:hover{box-shadow:0 10px 30px rgba(0,0,0,.45),0 0 24px rgba(63,227,255,.35)}
.totop:hover span{transform:translateY(-3px)}
.totop:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
@media(max-width:780px){.totop{right:16px;bottom:16px;width:46px;height:46px}}

/* Reveal */
.reveal{opacity:0;transform:translateY(32px);transition:opacity .9s cubic-bezier(.2,.7,.2,1),transform .9s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}}

/* Responsive */
@media(max-width:1100px){
  nav.menu{display:none}
  .burger{display:block}
  nav.menu.open{display:flex;position:absolute;top:72px;left:0;right:0;flex-direction:column;background:rgba(4,9,20,.96);border-bottom:1px solid var(--line);padding:12px 20px 20px}
  .hero-grid{grid-template-columns:1fr}
  .core{width:min(380px,90%);order:-1}
  .lv{grid-template-columns:90px 1fr auto}
  .lv .types{display:none}
  .ftabs{display:flex;overflow-x:auto;padding-bottom:4px}
  .ftab{min-width:190px}
  .tgrid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:780px){
  .wrap{padding:0 20px}
  .nav-r .btn-red{display:none}
  section.s{padding:90px 0}
  .core .tag{display:none}
  .vs{grid-template-columns:1fr}
  .vs-mid{width:auto;height:0}
  .vs-new{border-left:0;border-top:1px solid var(--line2);border-radius:0 0 20px 20px}
  .vs-col{padding:28px 22px}
  .vs-result,.tech3,.steps,.fpoints,.fstats{grid-template-columns:1fr}
  .smtp,.mb{grid-template-columns:1fr}
  .mb-list{border-right:0;border-bottom:1px solid var(--line)}
  .trace{padding:20px}
  .fbody{padding:28px 22px}
  .fsplit{grid-template-columns:1fr}
  .mshot{position:static}
  .tgrid{grid-template-columns:1fr}
  .foot,.addr{grid-template-columns:1fr}
  .lv{padding:16px 18px;gap:14px}
}