:root{--sn-navy:#0033a0;--sn-navy-deep:#001e6b;--sn-navy-pale:#e6ecf8;--sn-navy-mist:#f3f6fc;--sn-gold:#c9a96a;--sn-gold-deep:#8b6f3a;--sn-gold-pale:#f5ebd6;--sn-champagne:#d9c89a;--sn-ink:#0e1b3a;--sn-ink-2:#3a4660;--sn-ink-3:#6c7a99;--sn-line:#d9e0ec;--sn-line-soft:#e8edf6;--sn-bg:#fafbfd;--sn-bg-alt:#f3f6fc;--sn-oil:#b8860b;--sn-oil-deep:#7a5a08;--sn-oil-pale:#faecc5;--sn-speed-low:#a31515;--sn-speed-mid:#b8860b;--sn-speed-high:#2d8659;--sn-speed-peak:#0033a0;--sn-film:#6b7a99;--sn-film-pale:#e0e6f1;--sn-metal:#b0b7c3;--sn-metal-pale:#e8ecf2;--sn-pass:#2d8659;--sn-warn:#b8860b;--sn-fail:#a31515;--sn-info:#1e58a8;--sn-font-display:'Sora','Segoe UI','Helvetica Neue',system-ui,sans-serif;--sn-font-body:'Inter','Segoe UI','Helvetica Neue',system-ui,sans-serif;--sn-font-mono:'JetBrains Mono','Consolas','Menlo',monospace;--sn-wrap:1280px;--sn-radius:12px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--sn-font-body);color:var(--sn-ink);background:var(--sn-bg);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}img{max-width:100%;height:auto;display:block}a{color:var(--sn-navy);text-decoration:none;transition:color .2s}a:hover{color:var(--sn-navy-deep)}ul,ol{list-style:none}button{font:inherit;cursor:pointer;border:0;background:0 0;color:inherit}.sn-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--sn-line)}.sn-header__inner{max-width:var(--sn-wrap);margin:0 auto;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:24px}.sn-brand{display:flex;align-items:center;gap:10px;font-family:var(--sn-font-display);font-weight:700;font-size:18px;color:var(--sn-ink);letter-spacing:-.01em}.sn-brand__mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,var(--sn-navy) 0%,var(--sn-navy-deep) 100%);color:#fff;font-size:13px;font-weight:800;letter-spacing:.02em}.sn-nav{display:flex;align-items:center;gap:22px}.sn-nav a{font-size:14px;font-weight:500;color:var(--sn-ink-2);position:relative;padding:6px 0}.sn-nav a.is-active{color:var(--sn-navy);font-weight:600}.sn-nav a.is-active:after{content:'';position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--sn-gold);border-radius:2px}.sn-nav a:hover{color:var(--sn-navy)}.sn-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 18px;border-radius:8px;font-size:14px;font-weight:600;transition:all .2s}.sn-btn--primary{background:var(--sn-navy);color:#fff}.sn-btn--primary:hover{background:var(--sn-navy-deep);color:#fff;transform:translateY(-1px);box-shadow:0 6px 16px rgba(0,51,160,.22)}.sn-btn--ghost{background:0 0;color:var(--sn-navy);border:1.5px solid var(--sn-navy)}.sn-btn--ghost:hover{background:var(--sn-navy);color:#fff}.sn-btn--gold{background:var(--sn-gold);color:#fff}.sn-btn--gold:hover{background:var(--sn-gold-deep);color:#fff}.sn-menu-toggle{display:none}.sn-bread{background:var(--sn-bg-alt);border-bottom:1px solid var(--sn-line)}.sn-bread__inner{max-width:var(--sn-wrap);margin:0 auto;padding:12px 24px;font-family:var(--sn-font-mono);font-size:12px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.sn-bread a{color:var(--sn-ink-3)}.sn-bread a:hover{color:var(--sn-navy)}.sn-bread__sep{color:var(--sn-line)}.sn-bread__current{color:var(--sn-ink);font-weight:700}.sn-bread__badge{font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--sn-gold-deep);background:var(--sn-gold-pale);padding:3px 8px;border-radius:4px;margin-left:auto;font-weight:700}.sn-hero{background:radial-gradient(ellipse at top right,rgba(0,51,160,.05),transparent 60%),radial-gradient(ellipse at bottom left,rgba(201,169,106,.06),transparent 60%),linear-gradient(180deg,#fff 0%,var(--sn-bg) 100%);padding:56px 24px 36px;position:relative;overflow:hidden}.sn-hero__inner{max-width:var(--sn-wrap);margin:0 auto}.sn-hero__grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:start}.sn-eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--sn-font-mono);font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--sn-navy);background:var(--sn-navy-pale);padding:6px 12px;border-radius:20px}.sn-eyebrow:before{content:'';display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--sn-gold)}.sn-hero h1{font-family:var(--sn-font-display);font-size:clamp(34px, 5.2vw, 56px);font-weight:800;line-height:1.08;letter-spacing:-.025em;margin:18px 0 18px;color:var(--sn-ink)}.sn-hero h1 .accent{display:inline-block;background:linear-gradient(90deg,var(--sn-navy) 0%,var(--sn-gold-deep) 100%);-webkit-background-clip:text;background-clip:text;color:transparent}.sn-hero__lead{font-size:17px;line-height:1.7;color:var(--sn-ink-2);max-width:720px;margin-bottom:26px}.sn-hero__cta{display:flex;gap:12px;flex-wrap:wrap}.sn-btn--lg{padding:13px 26px;font-size:15px}.sn-atlas{background:#fff;border:1px solid var(--sn-line);border-radius:18px;padding:24px;box-shadow:0 12px 36px rgba(14,27,58,.07)}.sn-atlas__head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-bottom:14px;margin-bottom:16px;border-bottom:1px dashed var(--sn-line)}.sn-atlas__no{font-family:var(--sn-font-mono);font-size:11px;font-weight:700;letter-spacing:.12em;color:var(--sn-gold-deep);background:var(--sn-gold-pale);padding:4px 10px;border-radius:6px;text-transform:uppercase}.sn-atlas__title{font-family:var(--sn-font-display);font-size:15px;font-weight:700;color:var(--sn-ink);flex:1;min-width:200px}.sn-atlas__meta{font-family:var(--sn-font-mono);font-size:11px;color:var(--sn-ink-3)}.sn-atlas__sub{font-family:var(--sn-font-mono);font-size:10.5px;font-weight:700;letter-spacing:.12em;color:var(--sn-navy-deep);text-transform:uppercase;margin:18px 0 10px;padding-bottom:6px;border-bottom:1px solid var(--sn-line-soft);display:flex;justify-content:space-between;align-items:center;gap:12px}.sn-atlas__sub-tag{font-family:var(--sn-font-body);font-size:10.5px;font-weight:500;color:var(--sn-ink-3);text-transform:none;letter-spacing:0}.sn-speed{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.sn-speed__tier{background:var(--sn-bg-alt);border-radius:8px;padding:12px 10px;border-top:3px solid var(--sn-speed-low);display:flex;flex-direction:column;gap:4px}.sn-speed__tier--2{border-top-color:#c47800}.sn-speed__tier--3{border-top-color:var(--sn-speed-mid)}.sn-speed__tier--4{border-top-color:#4a9c6f}.sn-speed__tier--5{border-top-color:var(--sn-speed-peak)}.sn-speed__no{font-family:var(--sn-font-mono);font-size:9.5px;font-weight:700;color:var(--sn-ink-3);letter-spacing:.08em}.sn-speed__name{font-size:12px;font-weight:700;color:var(--sn-ink)}.sn-speed__rate{font-family:var(--sn-font-mono);font-size:16px;font-weight:700;color:var(--sn-navy)}.sn-speed__rate sub{font-size:9.5px;color:var(--sn-ink-3);font-weight:500}.sn-speed__bar{height:4px;background:var(--sn-line);border-radius:2px;overflow:hidden;margin-top:2px}.sn-speed__bar-fill{height:100%;border-radius:2px;background:linear-gradient(90deg,var(--sn-speed-low) 0%,var(--sn-speed-peak) 100%)}.sn-speed__note{font-size:10px;color:var(--sn-ink-3);line-height:1.3}.sn-matrix{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:8px;border:1px solid var(--sn-line-soft)}.sn-matrix table{width:100%;border-collapse:collapse;min-width:580px}.sn-matrix th,.sn-matrix td{padding:9px 10px;text-align:left;font-size:11.5px;border-bottom:1px solid var(--sn-line-soft)}.sn-matrix th{background:var(--sn-bg-alt);color:var(--sn-ink-2);font-family:var(--sn-font-mono);font-size:10px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;position:sticky;top:0}.sn-matrix tbody tr:hover{background:var(--sn-navy-mist)}.sn-matrix td.mat{font-weight:700;color:var(--sn-ink)}.sn-pill{display:inline-flex;align-items:center;gap:4px;padding:3px 8px;border-radius:12px;font-family:var(--sn-font-mono);font-size:9.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}.sn-pill--pass{background:#e3f1e9;color:var(--sn-pass)}.sn-pill--warn{background:var(--sn-oil-pale);color:var(--sn-oil-deep)}.sn-pill--fail{background:#f6e0e0;color:var(--sn-fail)}.sn-pack{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.sn-pack__card{background:var(--sn-bg-alt);border-radius:8px;padding:10px 8px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:4px}.sn-pack__svg{width:48px;height:64px;display:flex;align-items:flex-end;justify-content:center}.sn-pack__svg svg{display:block}.sn-pack__name{font-size:11.5px;font-weight:700;color:var(--sn-ink)}.sn-pack__spec{font-family:var(--sn-font-mono);font-size:9.5px;color:var(--sn-ink-3);line-height:1.3}.sn-film{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.sn-film__chip{background:linear-gradient(135deg,var(--sn-metal-pale) 0%,#fff 100%);border:1px solid var(--sn-line);border-radius:8px;padding:10px;display:flex;flex-direction:column;gap:4px;position:relative}.sn-film__chip:before{content:'';position:absolute;top:6px;right:6px;width:8px;height:8px;border-radius:50%;background:var(--sn-metal);box-shadow:0 0 0 2px rgba(176,183,195,.25)}.sn-film__name{font-size:11.5px;font-weight:700;color:var(--sn-ink)}.sn-film__energy{font-family:var(--sn-font-mono);font-size:10px;color:var(--sn-film)}.sn-film__energy strong{color:var(--sn-navy);font-size:12px}.sn-film__note{font-size:9.5px;color:var(--sn-ink-3);line-height:1.3}.sn-shelf{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;position:relative}.sn-shelf__zone{background:var(--sn-bg-alt);border-radius:8px;padding:10px 8px;text-align:center;border-bottom:3px solid var(--sn-gold);display:flex;flex-direction:column;gap:4px;position:relative}.sn-shelf__zone--1{border-bottom-color:var(--sn-navy)}.sn-shelf__zone--2{border-bottom-color:#2a4dc3}.sn-shelf__zone--3{border-bottom-color:var(--sn-gold)}.sn-shelf__zone--4{border-bottom-color:var(--sn-gold-deep)}.sn-shelf__zone--5{border-bottom-color:var(--sn-champagne)}.sn-shelf__dist{font-family:var(--sn-font-mono);font-size:10px;font-weight:700;color:var(--sn-ink-3);letter-spacing:.08em;text-transform:uppercase}.sn-shelf__dist strong{display:block;font-size:16px;color:var(--sn-navy)}.sn-shelf__label{font-size:11px;font-weight:600;color:var(--sn-ink)}.sn-shelf__metric{font-family:var(--sn-font-mono);font-size:9.5px;color:var(--sn-ink-3);line-height:1.3}.sn-shelf__bar{height:3px;background:var(--sn-line);border-radius:2px;margin-top:2px;overflow:hidden}.sn-shelf__bar-fill{height:100%;background:var(--sn-gold);border-radius:2px}.sn-stack{display:grid;grid-template-columns:repeat(5,1fr);gap:4px}.sn-stack__layer{background:var(--sn-bg-alt);border-radius:6px;padding:8px 6px;text-align:center;border-left:3px solid var(--sn-gold);display:flex;flex-direction:column;gap:2px}.sn-stack__layer--1{border-left-color:#2a4dc3;background:var(--sn-navy-mist)}.sn-stack__layer--2{border-left-color:var(--sn-gold);background:var(--sn-gold-pale)}.sn-stack__layer--3{border-left-color:var(--sn-navy);background:var(--sn-navy-pale)}.sn-stack__layer--4{border-left-color:var(--sn-film);background:var(--sn-film-pale)}.sn-stack__layer--5{border-left-color:var(--sn-champagne);background:var(--sn-metal-pale)}.sn-stack__no{font-family:var(--sn-font-mono);font-size:9px;font-weight:700;color:var(--sn-ink-3);letter-spacing:.06em}.sn-stack__name{font-size:11px;font-weight:700;color:var(--sn-ink)}.sn-stack__spec{font-family:var(--sn-font-mono);font-size:9px;color:var(--sn-ink-3);line-height:1.3}.sn-atlas__footer{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px;padding-top:14px;border-top:1px dashed var(--sn-line)}.sn-sig{background:linear-gradient(135deg,var(--sn-navy-pale) 0%,#fff 100%);border:1px solid var(--sn-line);border-radius:8px;padding:12px 14px;display:flex;align-items:center;gap:10px}.sn-sig--gold{background:linear-gradient(135deg,var(--sn-gold-pale) 0%,#fff 100%);border-color:var(--sn-gold)}.sn-sig__icon{width:32px;height:32px;border-radius:6px;background:var(--sn-navy);color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0}.sn-sig--gold .sn-sig__icon{background:var(--sn-gold-deep)}.sn-sig__title{font-family:var(--sn-font-display);font-size:12px;font-weight:700;color:var(--sn-ink);line-height:1.2}.sn-sig__body{font-family:var(--sn-font-mono);font-size:10px;color:var(--sn-ink-3);margin-top:2px}.sn-trust{background:#fff;border-top:1px solid var(--sn-line);border-bottom:1px solid var(--sn-line);padding:18px 24px}.sn-trust__inner{max-width:var(--sn-wrap);margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.sn-trust__item{display:flex;align-items:center;gap:10px;font-size:13px}.sn-trust__icon{width:32px;height:32px;border-radius:8px;background:var(--sn-navy-pale);color:var(--sn-navy);display:flex;align-items:center;justify-content:center;flex-shrink:0}.sn-trust__text strong{display:block;color:var(--sn-ink);font-weight:700;font-size:13px}.sn-trust__text span{color:var(--sn-ink-3);font-size:11.5px}.sn-section{padding:56px 24px}.sn-section--tight{padding:36px 24px}.sn-section--alt{background:var(--sn-bg-alt)}.sn-container{max-width:var(--sn-wrap);margin:0 auto}.sn-section__head{text-align:center;max-width:760px;margin:0 auto 32px}.sn-section__head .sn-eyebrow{margin-bottom:14px}.sn-section__head h2{font-family:var(--sn-font-display);font-size:clamp(26px, 3.4vw, 36px);font-weight:700;line-height:1.18;color:var(--sn-ink);letter-spacing:-.015em;margin-bottom:12px}.sn-lead{font-size:15.5px;color:var(--sn-ink-2);line-height:1.7}.sn-geo{background:var(--sn-navy-pale);border-left:4px solid var(--sn-gold);padding:22px 28px;border-radius:0 12px 12px 0;font-size:16px;line-height:1.75;color:var(--sn-ink-2);font-style:italic}.sn-geo strong{color:var(--sn-navy);font-style:normal;font-weight:600}.sn-grid{display:grid;gap:18px}.sn-grid--3{grid-template-columns:repeat(3,1fr)}.sn-grid--4{grid-template-columns:repeat(4,1fr)}.sn-card{background:#fff;border:1px solid var(--sn-line);border-radius:var(--sn-radius);padding:22px;transition:all .25s;position:relative;display:flex;flex-direction:column}.sn-card:hover{border-color:var(--sn-navy);transform:translateY(-2px);box-shadow:0 8px 22px rgba(14,27,58,.08)}.sn-card--premium{border-color:var(--sn-gold);background:linear-gradient(180deg,#fff 0%,var(--sn-gold-pale) 100%)}.sn-card--premium:hover{border-color:var(--sn-gold-deep)}.sn-card__icon{width:44px;height:44px;border-radius:10px;background:var(--sn-navy-pale);color:var(--sn-navy);display:flex;align-items:center;justify-content:center;margin-bottom:14px}.sn-card--premium .sn-card__icon{background:var(--sn-gold-pale);color:var(--sn-gold-deep)}.sn-card__tag{display:inline-flex;align-items:center;font-family:var(--sn-font-mono);font-size:10px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;padding:3px 8px;border-radius:4px;position:absolute;top:16px;right:16px}.sn-card__tag--gold{background:var(--sn-gold);color:#fff}.sn-card__tag--standard{background:var(--sn-navy-pale);color:var(--sn-navy)}.sn-card__title{font-family:var(--sn-font-display);font-size:17px;font-weight:700;color:var(--sn-ink);margin-bottom:8px;letter-spacing:-.01em}.sn-card__body{font-size:13.5px;color:var(--sn-ink-2);line-height:1.6}.sn-table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--sn-radius);border:1px solid var(--sn-line);background:#fff}.sn-table{width:100%;border-collapse:collapse;min-width:720px}.sn-table thead{background:var(--sn-navy)}.sn-table th{padding:13px 16px;text-align:left;color:#fff;font-family:var(--sn-font-mono);font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.sn-table td{padding:13px 16px;font-size:13.5px;color:var(--sn-ink-2);border-bottom:1px solid var(--sn-line-soft);vertical-align:top}.sn-table tbody tr:nth-child(even){background:var(--sn-bg-alt)}.sn-table tbody tr:hover{background:var(--sn-navy-mist)}.sn-table td:first-child{font-weight:700;color:var(--sn-ink)}.sn-table .sn-pill{font-size:10px}.sn-split{display:grid;grid-template-columns:1.1fr 1fr;gap:26px;background:#fff;border:1px solid var(--sn-line);border-radius:var(--sn-radius);padding:28px}.sn-checklist{display:flex;flex-direction:column;gap:12px}.sn-checklist__item{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--sn-ink-2);line-height:1.55}.sn-checklist__icon{width:22px;height:22px;border-radius:6px;background:var(--sn-navy-pale);color:var(--sn-navy);display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:1px}.sn-checklist__item strong{color:var(--sn-ink)}.sn-faq{display:flex;flex-direction:column;gap:10px}.sn-faq__item{background:#fff;border:1px solid var(--sn-line);border-radius:10px;overflow:hidden;transition:all .2s}.sn-faq__item.is-open{border-color:var(--sn-gold);box-shadow:0 4px 12px rgba(201,169,106,.16)}.sn-faq__q{width:100%;text-align:left;padding:16px 20px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-family:var(--sn-font-display);font-size:14.5px;font-weight:600;color:var(--sn-ink);line-height:1.4}.sn-faq__q:hover{color:var(--sn-navy)}.sn-faq__q-icon{flex-shrink:0;width:22px;height:22px;border-radius:50%;background:var(--sn-navy-pale);color:var(--sn-navy);display:flex;align-items:center;justify-content:center;transition:transform .25s}.sn-faq__item.is-open .sn-faq__q-icon{background:var(--sn-gold);color:#fff;transform:rotate(180deg)}.sn-faq__a{max-height:0;overflow:hidden;transition:max-height .35s ease}.sn-faq__item.is-open .sn-faq__a{max-height:500px}.sn-faq__a-inner{padding:0 20px 18px;font-size:13.5px;color:var(--sn-ink-2);line-height:1.7}.sn-sample{background:linear-gradient(135deg,var(--sn-navy) 0%,var(--sn-navy-deep) 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