:root{
  --bg:#07141a;--bg2:#0b1d24;--panel:#102832;--panel2:#15333f;--line:#244651;
  --text:#f5fbfc;--muted:#a9c0c8;--accent:#45d0b2;--accent2:#8de7d5;--warn:#ffd06b;--bad:#ff8b7d;--good:#6be0a5;
  --max:1180px;--radius:22px;--shadow:0 18px 55px rgba(0,0,0,.24)
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:linear-gradient(180deg,var(--bg),#0a1820 45%,#07141a);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI",Tahoma,Arial,sans-serif;line-height:1.75;text-rendering:optimizeLegibility}
a{color:var(--accent2);text-decoration-thickness:1px;text-underline-offset:3px}a:hover{color:#c8fff4}.wrap{width:min(var(--max),calc(100% - 32px));margin:auto}.skip{position:fixed;top:8px;right:8px;z-index:999;padding:10px 14px;background:#fff;color:#000;border-radius:10px;transform:translateY(-180%)}.skip:focus{transform:none}.site-header{position:sticky;top:0;z-index:50;background:rgba(7,20,26,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,255,255,.06)}.nav{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:72px}.brand{display:flex;align-items:center;gap:11px;color:#fff;text-decoration:none;font-weight:800}.brand-mark{display:grid;place-items:center;width:39px;height:39px;border-radius:12px;background:linear-gradient(135deg,var(--accent),#1b8fa1);color:#062017;font-weight:950;box-shadow:0 8px 26px rgba(69,208,178,.22)}.brand small{display:block;color:var(--muted);font-size:.74rem;font-weight:600;line-height:1.2}.nav-links{display:flex;align-items:center;gap:18px;font-size:.94rem}.nav-links a{color:#d8e8ec;text-decoration:none}.nav-links a:hover{color:#fff}.menu-btn{display:none;background:transparent;border:1px solid var(--line);color:#fff;border-radius:10px;padding:8px 11px;font-size:1.2rem}.hero{padding:66px 0 34px;overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:42px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border:1px solid #2b5960;background:rgba(69,208,178,.08);border-radius:999px;color:#bff7eb;font-size:.86rem;font-weight:700}.hero h1,.page-head h1{font-size:clamp(2.3rem,5vw,4.6rem);line-height:1.05;margin:18px 0 18px;letter-spacing:-.035em}.hero p{font-size:1.15rem;color:#c2d5da;max-width:680px}.hero-note{display:flex;gap:10px;align-items:flex-start;margin-top:18px;color:var(--muted);font-size:.93rem}.hero-visual{position:relative;min-height:320px}.orb{position:absolute;inset:25px 45px;border-radius:50%;background:radial-gradient(circle at 35% 35%,rgba(141,231,213,.28),rgba(69,208,178,.1) 42%,rgba(17,56,67,.18) 70%);filter:drop-shadow(0 30px 70px rgba(69,208,178,.12))}.mock-card{position:absolute;inset:35px 28px auto auto;width:min(390px,92%);background:linear-gradient(160deg,#153540,#0d242d);border:1px solid #2c5964;border-radius:26px;padding:22px;box-shadow:var(--shadow);transform:rotate(-2deg)}.mock-card .status{font-size:1.6rem;font-weight:900;color:var(--good)}.mock-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}.mock-cell{background:#0a1c23;border:1px solid #1f414b;border-radius:14px;padding:12px}.mock-cell small{display:block;color:var(--muted)}.mock-cell strong{font-size:1.08rem}.section{padding:34px 0 72px}.section-title{font-size:clamp(1.8rem,3vw,2.7rem);line-height:1.15;margin:0 0 12px}.section-lead{color:var(--muted);max-width:760px;margin:0 0 28px}.calc-layout{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(330px,.9fr);gap:24px;align-items:start}.panel{background:linear-gradient(180deg,var(--panel),#0d232b);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.form-panel{padding:24px}.result-panel{position:sticky;top:96px;overflow:hidden}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}.panel-head h2,.panel-head h3{margin:0;font-size:1.25rem}.pill{font-size:.78rem;border:1px solid #2a5a61;background:#0d2b30;color:#bceee5;border-radius:999px;padding:5px 9px}.form-section{padding:20px 0;border-top:1px solid rgba(255,255,255,.07)}.form-section:first-of-type{border-top:0;padding-top:0}.form-section h3{font-size:1rem;margin:0 0 14px;color:#e7f7f8}.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:flex;flex-direction:column;gap:7px}.field.full{grid-column:1/-1}.field label,.label{font-size:.9rem;font-weight:750;color:#dbecef}.field input,.field select{width:100%;border:1px solid #31515c;background:#081a21;color:#f5fbfc;border-radius:12px;padding:12px 13px;font:inherit;outline:none;transition:border .15s,box-shadow .15s}.field input:focus,.field select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(69,208,178,.13)}.field small{color:var(--muted);font-size:.78rem}.seg{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.seg label{position:relative}.seg input{position:absolute;opacity:0;pointer-events:none}.seg span{display:block;text-align:center;padding:9px 8px;border:1px solid #31515c;border-radius:10px;background:#0a1c23;color:#c9dadd;cursor:pointer;font-size:.85rem}.seg input:checked+span{border-color:var(--accent);background:rgba(69,208,178,.12);color:#e9fff9}.checkrow{display:flex;gap:10px;align-items:flex-start;padding:10px 0;color:#d8e7ea;font-size:.9rem}.checkrow input{margin-top:6px;accent-color:var(--accent)}.calc-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.btn{appearance:none;border:0;border-radius:12px;padding:11px 15px;font:inherit;font-weight:800;cursor:pointer;background:var(--accent);color:#062019;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:7px}.btn:hover{filter:brightness(1.06);color:#062019}.btn.secondary{background:#173641;color:#e5f4f6;border:1px solid #31515c}.btn.ghost{background:transparent;color:#c9dadd;border:1px solid #31515c}.result-top{padding:24px;background:linear-gradient(135deg,rgba(69,208,178,.12),rgba(42,131,152,.08));border-bottom:1px solid var(--line)}.result-kicker{color:#9ab6be;font-size:.82rem;font-weight:800}.result-status{font-size:2rem;font-weight:950;line-height:1.15;margin:6px 0}.result-status.good{color:var(--good)}.result-status.warn{color:var(--warn)}.result-status.bad{color:var(--bad)}.result-copy{color:#c5d7dc;margin:0}.result-body{padding:20px 24px 24px}.metric-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.metric{padding:13px;background:#091d24;border:1px solid #21434e;border-radius:14px}.metric small{display:block;color:#90aab2;font-size:.75rem}.metric strong{display:block;font-size:1.05rem;margin-top:3px}.fit-track{margin:22px 0 8px}.fit-axis{height:12px;border-radius:999px;background:linear-gradient(90deg,#62373d 0 28%,#7e6328 28% 40%,#1f6c55 40% 66%,#796829 66% 80%,#653b3b 80%);position:relative}.fit-pin{position:absolute;top:50%;width:18px;height:18px;border:3px solid #fff;border-radius:50%;background:#0e222a;transform:translate(50%,-50%);box-shadow:0 3px 12px rgba(0,0,0,.35)}.fit-caption{display:flex;justify-content:space-between;color:#89a3aa;font-size:.7rem;margin-top:5px}.cost-box{margin-top:16px;padding:16px;border-radius:16px;border:1px solid #2d525d;background:#0a1d25}.cost-title{font-weight:850;margin-bottom:8px}.cost-main{font-size:1.45rem;font-weight:950;color:#fff}.cost-sub{font-size:.83rem;color:var(--muted)}.standard-sizes{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px}.size-card{padding:10px 8px;background:#0a1b22;border:1px solid #21434c;border-radius:12px;text-align:center}.size-card strong{display:block}.size-card small{color:var(--muted)}.size-card.recommended{border-color:var(--accent);background:rgba(69,208,178,.08)}.notice{margin-top:16px;padding:12px 14px;border-right:3px solid #47727e;background:#0a1b22;border-radius:10px;color:#b7cbd1;font-size:.84rem}.error-box{display:none;margin:0 0 14px;padding:12px 14px;background:#351d22;border:1px solid #6b3942;color:#ffd9d4;border-radius:12px}.error-box.show{display:block}.trust-row{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px}.trust-card{border:1px solid #244954;background:#0c2028;border-radius:16px;padding:18px}.trust-card strong{display:block;margin-bottom:5px}.trust-card span{color:var(--muted);font-size:.9rem}.content-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.content-card{display:flex;flex-direction:column;padding:22px;background:#0d232b;border:1px solid #24454f;border-radius:18px;text-decoration:none;color:#fff;min-height:210px}.content-card:hover{border-color:#3e7b82;color:#fff;transform:translateY(-2px)}.content-card .tag{color:var(--accent2);font-size:.76rem;font-weight:800}.content-card h3{font-size:1.15rem;line-height:1.35;margin:10px 0}.content-card p{color:var(--muted);font-size:.9rem;margin:0}.content-card .more{margin-top:auto;padding-top:14px;color:#d7f9f1;font-weight:750}.page-head{padding:52px 0 24px}.page-head h1{font-size:clamp(2rem,4vw,3.6rem)}.page-head p{max-width:820px;color:#bdd0d5;font-size:1.08rem}.breadcrumb{padding-top:24px;color:#88a3aa;font-size:.86rem}.breadcrumb a{color:#a9c9ce;text-decoration:none}.prose{max-width:850px;margin:auto}.prose h2{font-size:1.7rem;line-height:1.25;margin:42px 0 14px}.prose h3{font-size:1.25rem;margin:30px 0 10px}.prose p,.prose li{color:#c6d8dd}.prose ul,.prose ol{padding-right:22px}.prose .lead{font-size:1.15rem;color:#dbe9ec}.callout{margin:24px 0;padding:18px 20px;border:1px solid #315864;border-radius:16px;background:#0c222b;color:#d5e5e8}.callout.warn{border-color:#6e5c31;background:#2b2413}.fact-table{width:100%;border-collapse:collapse;margin:20px 0;background:#0c2129;border-radius:14px;overflow:hidden}.fact-table th,.fact-table td{padding:12px 14px;border-bottom:1px solid #274650;text-align:right}.fact-table th{color:#f4fafb;background:#102b35}.fact-table td{color:#c6d7db}.source-list{display:grid;gap:14px}.source-card{padding:18px;border:1px solid #294c56;background:#0c2028;border-radius:14px}.source-card h3{margin:0 0 6px}.source-card p{margin:0 0 8px}.faq{display:grid;gap:10px}.faq details{background:#0c2129;border:1px solid #284a54;border-radius:14px;padding:0 16px}.faq summary{cursor:pointer;font-weight:850;padding:15px 0}.faq p{margin-top:0}.footer{margin-top:70px;border-top:1px solid rgba(255,255,255,.07);background:#061117;padding:42px 0 26px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}.footer h4{margin:0 0 12px}.footer a{display:block;color:#a9c0c8;text-decoration:none;margin:8px 0}.footer p{color:#8fa9b0;font-size:.88rem;max-width:520px}.copyright{margin-top:30px;padding-top:20px;border-top:1px solid rgba(255,255,255,.07);color:#78939b;font-size:.8rem}.no-js{padding:12px 16px;background:#49242a;color:#fff;text-align:center}.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:900px){.hero-grid,.calc-layout{grid-template-columns:1fr}.hero-visual{min-height:250px}.result-panel{position:static}.content-grid,.trust-row{grid-template-columns:1fr 1fr}.nav-links{display:none;position:absolute;top:72px;right:16px;left:16px;flex-direction:column;align-items:stretch;background:#0d222a;border:1px solid var(--line);border-radius:16px;padding:12px;box-shadow:var(--shadow)}.nav-links.open{display:flex}.menu-btn{display:block}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}}
@media(max-width:620px){.wrap{width:min(100% - 22px,var(--max))}.hero{padding-top:38px}.hero h1{font-size:2.35rem}.hero-visual{display:none}.field-grid{grid-template-columns:1fr}.seg{grid-template-columns:1fr}.metric-grid,.content-grid,.trust-row,.footer-grid{grid-template-columns:1fr}.standard-sizes{grid-template-columns:1fr 1fr 1fr}.form-panel{padding:17px}.result-top,.result-body{padding:18px}.footer-grid>div:first-child{grid-column:auto}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
@media print{.site-header,.hero,.calc-actions,.footer,.breadcrumb,.section-title,.section-lead,.trust-row{display:none!important}body{background:#fff;color:#111}.wrap{width:100%}.calc-layout{display:block}.panel{box-shadow:none;border:1px solid #bbb;background:#fff;color:#111}.form-panel{display:none}.result-panel{position:static}.result-top,.result-body,.metric,.cost-box,.size-card,.notice{background:#fff;color:#111;border-color:#ccc}.result-copy,.cost-sub,.metric small,.size-card small,.notice{color:#444}.result-status.good,.result-status.warn,.result-status.bad{color:#111}}