:root{
  --bg:#f6f8fc;--surface:#fff;--surface-2:#f0f4fb;--text:#17233c;--muted:#62708a;
  --line:#e2e8f2;--brand:#2d5bdb;--brand-dark:#2047b7;--brand-soft:#eaf0ff;
  --mint:#dff7ee;--mint-text:#12664d;--shadow:0 14px 40px rgba(30,52,96,.07);
  --radius:20px;--max:1160px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button,a,input{ -webkit-tap-highlight-color:transparent}
button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #93b4ff;outline-offset:3px}
.skip-link{position:absolute;left:-9999px;top:10px;background:#fff;padding:10px 14px;border-radius:10px;z-index:100}
.skip-link:focus{left:10px}
.wrap{width:min(var(--max),calc(100% - 40px));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:30;background:rgba(246,248,252,.9);backdrop-filter:blur(14px);border-bottom:1px solid rgba(226,232,242,.85)}
.nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px;font-weight:850;font-size:1.28rem;letter-spacing:-.04em;white-space:nowrap}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--brand);display:grid;place-items:center;color:white;box-shadow:0 7px 16px #2d5bdb35}
.brand-mark svg{width:22px;height:22px}
.nav-links{display:flex;align-items:center;gap:26px;color:#4e5d78;font-size:.94rem;font-weight:650}
.nav-links a:hover{color:var(--brand)}
.nav-cta{background:var(--brand);color:white!important;padding:10px 16px;border-radius:12px;box-shadow:0 6px 14px #2d5bdb25}
.menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:11px;padding:8px 11px;color:var(--text)}
.hero{padding:66px 0 38px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;align-items:center;gap:48px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--mint);color:var(--mint-text);border:1px solid #c9efdf;border-radius:999px;padding:6px 11px;font-size:.78rem;font-weight:800;letter-spacing:.03em}
.eyebrow-dot{width:7px;height:7px;border-radius:50%;background:#20a879}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(2.5rem,5vw,4.45rem);line-height:1.04;letter-spacing:-.065em;margin:20px 0 20px;max-width:720px}
.gradient-text{color:var(--brand)}
.hero-copy{font-size:1.08rem;line-height:1.8;color:var(--muted);max-width:590px;margin-bottom:25px}
.search-box{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid #dce4f2;border-radius:16px;padding:7px 8px 7px 16px;box-shadow:var(--shadow);max-width:600px}
.search-box svg{width:21px;height:21px;flex:0 0 auto;color:#7886a0}
.search-box input{min-width:0;flex:1;border:0;outline:0;background:transparent;color:var(--text);padding:12px 0}
.search-box input::placeholder{color:#8a96aa}
.search-box button{border:0;border-radius:11px;background:var(--brand);color:#fff;font-weight:750;padding:12px 18px;cursor:pointer}
.search-box button:hover,.button-primary:hover{background:var(--brand-dark)}
.search-hint{font-size:.8rem;color:#8390a6;margin:10px 0 0 3px}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:23px}
.hero-tags a{font-size:.83rem;color:#52617d;border:1px solid var(--line);background:#fff;padding:7px 11px;border-radius:999px}
.hero-tags a:hover{border-color:#a9bdf5;color:var(--brand)}
.hero-art{position:relative;min-height:390px;display:grid;place-items:center}
.art-orb{position:absolute;width:340px;height:340px;border-radius:50%;background:linear-gradient(145deg,#e8efff,#e1f8f0);filter:blur(1px)}
.calc-card{position:relative;width:min(340px,100%);background:#fff;border:1px solid #e1e8f4;border-radius:24px;padding:19px;box-shadow:0 28px 70px rgba(37,64,120,.16);transform:rotate(2deg)}
.calc-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.calc-label{font-size:.78rem;font-weight:800;color:#53627d}
.calc-leds{display:flex;gap:5px}.calc-leds i{width:7px;height:7px;border-radius:50%;background:#cbd5e1}
.calc-screen{background:#13213d;color:#dce8ff;border-radius:15px;padding:17px 16px;margin-bottom:13px;min-height:100px}
.calc-screen small{display:block;color:#91a9d7;font-size:.72rem;margin-bottom:7px}
.calc-equation{font-size:1.2rem;font-weight:700;letter-spacing:.02em}
.calc-result{font-size:.8rem;color:#8ef0c6;margin-top:8px}
.key-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.key{height:42px;border:1px solid #e4eaf4;border-radius:10px;background:#f8faff;display:grid;place-items:center;font-weight:750;color:#394866;font-size:.86rem}
.key.blue{background:var(--brand-soft);color:var(--brand);border-color:#d9e4ff}
.floating-note{position:absolute;right:-2px;bottom:32px;background:#fff;border:1px solid var(--line);border-radius:15px;padding:12px 15px;box-shadow:var(--shadow);display:flex;align-items:center;gap:10px;font-size:.84rem;font-weight:750}
.floating-icon{display:grid;place-items:center;width:34px;height:34px;background:#e4f9f0;color:#12805d;border-radius:11px}
.floating-note small{display:block;color:var(--muted);font-size:.72rem;font-weight:500}
.section{padding:44px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:22px;margin-bottom:22px}
.section-kicker{font-size:.76rem;text-transform:uppercase;letter-spacing:.12em;color:var(--brand);font-weight:850;margin-bottom:8px}
h2{font-size:clamp(1.65rem,3vw,2.35rem);letter-spacing:-.045em;line-height:1.2;margin-bottom:9px}
.section-desc{color:var(--muted);margin-bottom:0;max-width:650px}
.text-link{color:var(--brand);font-weight:750;white-space:nowrap}
.text-link:hover{text-decoration:underline}
.category-row{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:22px}
.filter-btn{border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 15px;color:#586781;font-weight:700;font-size:.87rem;cursor:pointer}
.filter-btn[aria-pressed="true"]{background:var(--brand);border-color:var(--brand);color:#fff}
.tool-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.tool-card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:22px;min-height:205px;display:flex;flex-direction:column;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.tool-card:hover{transform:translateY(-3px);border-color:#c7d5fb;box-shadow:0 14px 30px rgba(30,52,96,.07)}
.tool-card[hidden]{display:none}
.tool-icon{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px;background:#edf2ff;color:var(--brand)}
.tool-icon svg{width:23px;height:23px}
.tool-card h3{font-size:1.06rem;letter-spacing:-.02em;margin-bottom:7px}
.tool-card p{color:var(--muted);font-size:.9rem;line-height:1.65;margin-bottom:17px}
.tool-card .card-bottom{margin-top:auto;display:flex;justify-content:space-between;align-items:center;gap:10px}
.card-link{color:var(--brand);font-weight:800;font-size:.88rem}
.card-status{font-size:.72rem;color:#75839a;background:#f2f5fa;padding:5px 8px;border-radius:7px;font-weight:750}
.empty-state{display:none;background:#fff;border:1px dashed #cbd5e1;border-radius:16px;padding:26px;text-align:center;color:var(--muted)}
.empty-state.show{display:block}
.feature-band{padding:24px 0 48px}
.feature-inner{display:grid;grid-template-columns:1fr 1fr;gap:20px;background:#172746;color:#fff;border-radius:26px;padding:34px;position:relative;overflow:hidden}
.feature-inner:after{content:"";position:absolute;width:270px;height:270px;border-radius:50%;right:-75px;top:-115px;background:#335bc4;opacity:.34}
.feature-copy,.feature-points{position:relative;z-index:1}
.feature-copy .section-kicker{color:#9bb8ff}
.feature-copy h2{max-width:440px}
.feature-copy p{color:#c4cee1;max-width:470px;margin-bottom:22px}
.button-primary{display:inline-flex;align-items:center;gap:9px;background:var(--brand);color:white;padding:12px 17px;border-radius:12px;font-weight:800}
.feature-points{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-content:center}
.feature-point{background:#ffffff0d;border:1px solid #ffffff1c;border-radius:15px;padding:17px}
.feature-point svg{width:22px;height:22px;color:#9bb8ff;margin-bottom:12px}
.feature-point strong{display:block;font-size:.92rem;margin-bottom:4px}
.feature-point span{display:block;color:#c4cee1;font-size:.8rem;line-height:1.55}
.guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.guide-card{background:#fff;border:1px solid var(--line);border-radius:17px;padding:22px}
.guide-type{font-size:.74rem;font-weight:850;color:#16805e;background:#e4f8ef;border-radius:7px;padding:5px 8px;display:inline-block;margin-bottom:13px}
.guide-card h3{font-size:1.02rem;line-height:1.4;margin-bottom:9px}
.guide-card p{font-size:.88rem;color:var(--muted);margin-bottom:14px}
.guide-card a{font-weight:800;color:var(--brand);font-size:.87rem}
.about-panel{display:grid;grid-template-columns:.8fr 1.2fr;gap:32px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:30px}
.about-stamp{background:var(--brand-soft);border-radius:17px;min-height:180px;display:grid;place-items:center;color:var(--brand)}
.about-stamp svg{width:75px;height:75px}
.about-copy h2{font-size:1.7rem}
.about-copy p{color:var(--muted);font-size:.94rem}
.trust-list{display:flex;flex-wrap:wrap;gap:9px;margin-top:15px}
.trust-list span{background:#f3f6fb;border:1px solid var(--line);padding:7px 10px;border-radius:9px;font-size:.78rem;font-weight:750;color:#586781}
.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:17px 18px}
summary{cursor:pointer;font-weight:800;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";color:var(--brand);font-size:1.2rem;line-height:1}
details[open] summary:after{content:"−"}
details p{color:var(--muted);font-size:.9rem;margin:12px 0 0}
.site-footer{margin-top:38px;background:#14213b;color:#dce5f6;padding:42px 0 22px}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;padding-bottom:30px}
.footer-brand .brand{color:#fff;margin-bottom:14px}
.footer-brand p{color:#aebbd1;font-size:.88rem;max-width:370px}
.footer-col h3{font-size:.88rem;color:#fff;margin-bottom:13px}
.footer-col a{display:block;color:#b5c2d7;font-size:.86rem;margin:8px 0}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid #ffffff1a;padding-top:18px;display:flex;justify-content:space-between;gap:18px;color:#9eacc3;font-size:.78rem}
.disclaimer{font-size:.78rem;color:#9eacc3;max-width:600px}
.mobile-nav{display:none}
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr .78fr;gap:24px}.hero-art{min-height:320px}.art-orb{width:280px;height:280px}
  .tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.guide-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .feature-inner{padding:28px}.footer-top{grid-template-columns:1.2fr 1fr 1fr;gap:20px}
}
@media(max-width:700px){
  .wrap{width:min(var(--max),calc(100% - 30px))}.nav{height:66px}.nav-links{display:none;position:absolute;left:15px;right:15px;top:60px;background:#fff;border:1px solid var(--line);border-radius:15px;padding:15px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}
  .nav-links.open{display:flex}.nav-links a{padding:11px 9px}.nav-cta{text-align:center;margin-top:6px}.menu-toggle{display:block}
  .hero{padding:43px 0 24px}.hero-grid{grid-template-columns:1fr}.hero-art{min-height:315px;margin-top:4px}.calc-card{max-width:310px}.floating-note{right:0;bottom:12px}
  h1{font-size:clamp(2.5rem,12vw,3.7rem)}.hero-copy{font-size:1rem}.search-box{gap:8px;padding-left:12px}.search-box button{padding:11px 13px}
  .section{padding:32px 0}.section-head{align-items:start;flex-direction:column;gap:10px}.tool-grid,.guide-grid{grid-template-columns:1fr}.tool-card{min-height:0}
  .feature-inner{grid-template-columns:1fr;padding:24px}.feature-points{grid-template-columns:1fr 1fr}
  .about-panel{grid-template-columns:1fr;padding:20px}.about-stamp{min-height:125px}.faq-list{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-bottom{flex-direction:column}
}
@media(max-width:390px){
  .brand{font-size:1.13rem}.brand-mark{width:34px;height:34px}.hero-tags a{font-size:.76rem}
  .feature-points{grid-template-columns:1fr}.footer-top{grid-template-columns:1fr}.footer-brand{grid-column:auto}
  .search-box input{font-size:.9rem}.search-box button{font-size:.88rem;padding:10px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}