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.site-header{position:sticky;top:0;z-index:30;background:rgba(4,19,30,.87);backdrop-filter:blur(18px);border-bottom:1px solid rgba(147,207,228,.13)}.header-inner{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:30px}.brand{display:flex;flex-shrink:0;width:205px;overflow:hidden;border-radius:4px}.brand img{width:100%;height:auto;object-fit:contain}.nav{display:flex;align-items:center;gap:26px}.nav>a:not(.nav-cta){font-size:12px;font-weight:700;color:#c7dbe4;transition:color .2s;white-space:nowrap}.nav>a:hover{color:var(--cyan)}.nav .nav-cta{background:var(--cyan);color:#082434;border-radius:7px;padding:12px 17px;font-weight:800;font-size:12px;white-space:nowrap;transition:transform .2s,background .2s}.nav .nav-cta:hover{background:#a4f5ff;transform:translateY(-2px)}.nav-toggle{display:none}
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.section{padding:125px 0}.section-label{color:#6ed9e9;display:flex;align-items:center;gap:13px;letter-spacing:.13em;font-size:12px;font-weight:900;margin-bottom:25px}.section-label span{color:#8aa8b7;font-size:10px;letter-spacing:.2em}.section h2{font-size:clamp(31px,3.55vw,46px);line-height:1.45;letter-spacing:-.045em;font-weight:850;margin:0}.section h2 span{color:var(--cyan)}.intro-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:80px;align-items:center}.intro-aside{border-left:2px solid rgba(96,208,226,.6);padding-left:30px}.intro-aside p{font-size:14px;color:#bfd4dd;line-height:2;margin:0 0 12px}.intro-aside strong{color:#f6fcff}.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:65px}.principle{background:linear-gradient(160deg,rgba(15,55,73,.85),rgba(9,35,50,.62));border:1px solid var(--line);border-radius:12px;padding:28px;min-height:253px;position:relative;transition:transform .2s,border-color .2s}.principle:hover{transform:translateY(-4px);border-color:rgba(97,226,242,.38)}.principle-number{color:#64c8d9;letter-spacing:.16em;font-size:10px;font-weight:800}.principle-icon{display:block;font-size:32px;color:#e4f6ff;margin:9px 0 8px}.principle h3{font-size:20px;margin:0 0 9px;letter-spacing:-.03em}.principle p{font-size:13px;line-height:1.85;color:#aec6d0;margin:0}
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.roadmap-section{background:#071a29}.roadmap-heading{display:grid;grid-template-columns:1.15fr .85fr;align-items:end;gap:70px;margin-bottom:46px}.roadmap-heading>p{font-size:14px;line-height:2;color:#a9c1cc;margin:0 0 8px}.roadmap-list{border-top:1px solid var(--line)}.roadmap-row{display:grid;grid-template-columns:70px 1fr 220px;align-items:center;gap:22px;border-bottom:1px solid var(--line);padding:24px 10px;transition:background .2s}.roadmap-row:hover{background:rgba(90,202,223,.035)}.roadmap-num{font-size:30px;font-weight:200;color:#4b8ca0;font-family:monospace}.roadmap-row h3{margin:6px 0;font-size:21px;letter-spacing:-.03em}.roadmap-row p{margin:0;color:#a6c1cc;font-size:13px}.roadmap-tag{justify-self:end;text-align:right;color:#6a97a7;letter-spacing:.1em;font-size:10px;font-weight:750}.status{border:1px solid #536a77;border-radius:20px;padding:3px 11px;font-size:10px;color:#9eb4c2;font-weight:750}.status-now{border-color:#4eaa9b;color:#b8f4db;background:rgba(49,180,128,.09)}.roadmap-disclaimer{font-size:11px;color:#789cac;margin-top:19px}
.from-lab{background:linear-gradient(145deg,#0a2839,#071d2c)}.lab-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:120px;align-items:center}.lab-mark{min-height:300px;background:radial-gradient(circle at 45% 38%,#1c5061,#0a1b2c 60%);border:1px solid var(--line);border-radius:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:25px;box-shadow:0 20px 55px rgba(0,0,0,.17)}.lab-mark span:last-child{color:#cfe5ed;font-size:20px;line-height:1.5;letter-spacing:.27em;text-align:center;font-weight:900}.tennis-orbit{color:var(--lime);font-size:61px}.lab-grid p{font-size:14px;color:#afc5cf;line-height:2;max-width:550px}.byline{display:inline-flex;border-top:1px solid #5492a5;color:#cde3ec;padding-top:14px;letter-spacing:.06em;font-size:12px;margin-top:13px}
.faq-grid{display:grid;grid-template-columns:.7fr 1.3fr;gap:80px}.faq-intro{font-size:14px;color:#a7bbc6}.faq-items{border-top:1px solid var(--line)}.faq-items details{border-bottom:1px solid var(--line)}.faq-items summary{position:relative;cursor:pointer;padding:22px 40px 22px 0;font-size:14px;font-weight:750;list-style:none}.faq-items summary::-webkit-details-marker{display:none}.faq-items summary:after{content:"＋";position:absolute;right:3px;top:18px;font-size:21px;color:var(--cyan);font-weight:300}.faq-items details[open] summary:after{content:"−"}.faq-answer{padding:0 32px 23px 0;color:#b0c9d4;font-size:13px;line-height:1.95}
.final-cta{padding:110px 0 120px;text-align:center;background:radial-gradient(ellipse 53% 95% at 50% 110%,rgba(26,138,162,.23),transparent 80%),#0a2333;border-top:1px solid var(--line)}.cta-inner h2{font-size:clamp(34px,4.4vw,54px);line-height:1.48;margin:17px 0;letter-spacing:-.035em}.cta-inner h2 span{color:var(--cyan)}.cta-inner p{font-size:14px;color:#b6cad4;margin:0 0 28px}
.site-footer{background:#04131f;border-top:1px solid var(--line);padding:46px 0 20px}.footer-main{display:flex;justify-content:space-between;gap:30px;align-items:flex-start}.footer-brand{display:flex;flex-direction:column;gap:6px}.footer-brand>span{font-style:italic;font-weight:900;font-size:22px;letter-spacing:-.04em}.footer-brand b{color:var(--cyan)}.footer-brand small{color:#91adba;font-size:11px}.footer-links{display:flex;gap:22px;flex-wrap:wrap;font-size:12px;color:#a8c0cc}.footer-links a:hover{color:var(--cyan)}.footer-bottom{display:flex;justify-content:space-between;border-top:1px solid var(--line);margin-top:35px;padding-top:18px;color:#7393a1;font-size:10px;letter-spacing:.06em}
.legal-main{padding:80px 0 120px;min-height:65vh}.legal-content{max-width:800px}.legal-content h1{font-size:38px;line-height:1.4}.legal-content h2{font-size:22px;margin-top:38px}.legal-content p,.legal-content li{font-size:14px;color:#c1d5de;line-height:2}.legal-content a{color:var(--cyan);text-decoration:underline}.legal-note{border-left:3px solid var(--cyan);padding:15px 22px;background:#0b293a;color:#b7d0da;font-size:13px;margin:24px 0}.legal-date{color:#849ea9;font-size:12px}
@media(max-width:1060px){.nav{gap:15px}.nav>a:not(.nav-cta){font-size:11px}.brand{width:174px}.hero-grid{gap:28px}.hero h1{font-size:clamp(39px,5vw,59px)}.diagnosis-grid{gap:40px}.lab-grid{gap:65px}}
@media(max-width:820px){.container{width:min(100% - 36px,650px)}.header-inner{min-height:67px}.brand{width:166px}.nav-toggle{display:flex;flex-direction:column;justify-content:center;gap:5px;background:transparent;border:1px solid #416274;border-radius:7px;width:43px;height:40px;cursor:pointer;padding:9px}.nav-toggle span{display:block;height:2px;width:100%;background:#d5ebf2;border-radius:2px}.nav{display:none;position:absolute;top:66px;left:0;right:0;padding:20px;background:#071b2a;flex-direction:column;align-items:stretch;gap:0;border-bottom:1px solid var(--line);box-shadow:0 20px 35px rgba(0,0,0,.3)}.nav.is-open{display:flex}.nav>a:not(.nav-cta){font-size:14px;padding:10px 12px}.nav .nav-cta{margin-top:14px;text-align:center}.hero{padding:70px 0 35px}.hero-grid{grid-template-columns:1fr;gap:48px}.hero h1{font-size:clamp(41px,9vw,65px)}.hero-visual{width:min(100%,600px);margin:auto}.hero-bottom{margin-top:45px;grid-template-columns:repeat(2,1fr)}.hero-bottom>div:nth-child(3){border-left:0;padding-left:0}.hero-bottom>div:nth-child(n+3){border-top:1px solid var(--line)}.section{padding:90px 0}.intro-grid,.diagnosis-grid,.roadmap-heading,.lab-grid,.faq-grid{grid-template-columns:1fr;gap:30px}.intro-aside{margin-top:0}.principles{grid-template-columns:1fr;gap:12px;margin-top:40px}.principle{min-height:unset;padding:24px}.diagnosis-grid{gap:50px}.result-preview{justify-self:center}.roadmap-row{grid-template-columns:54px 1fr;gap:12px}.roadmap-tag{grid-column:2;justify-self:start;text-align:left}.lab-grid{gap:35px}.lab-mark{min-height:210px;max-width:400px}.faq-grid{gap:14px}.footer-main{flex-direction:column;gap:25px}}
@media(max-width:480px){.container{width:calc(100% - 32px)}.hero{padding-top:51px}.hero h1{font-size:42px}.hero-lead{font-size:13px}.hero-actions{display:flex;flex-direction:column}.button{width:100%;justify-content:space-between;padding-left:18px}.hero-micro{font-size:10px;line-height:2}.hero-bottom>div{padding:14px 7px 14px 0;font-size:11px;gap:7px}.hero-bottom>div+div{padding-left:9px}.hero-bottom>div:nth-child(3){padding-left:0}.hero-visual figcaption{font-size:8px}.section{padding:75px 0}.section h2{font-size:31px}.section-label{font-size:11px}.section-label span{font-size:9px}.result-surface{padding:19px 15px 17px;border-radius:14px}.result-type-heading h3{font-size:23px}.result-kicker{font-size:9px}.weapon-panels{gap:8px}.weapon-panel{padding:11px 9px}.weapon-panel h4{font-size:10px;gap:5px}.weapon-panel li{font-size:10px}.weapon-panel strong{font-size:11px}.weapon-sign{height:17px;width:17px;font-size:10px}.result-disclaimer{font-size:10px}.roadmap-row{grid-template-columns:42px 1fr;gap:10px;padding:21px 0}.roadmap-row h3{font-size:18px}.roadmap-row p{font-size:12px}.lab-mark span:last-child{font-size:16px}.faq-items summary{font-size:13px}.cta-inner h2{font-size:31px}.footer-bottom{flex-direction:column;gap:6px}.legal-content h1{font-size:29px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

/* v3: show unused strengths separately from high-frequency strengths */
.weapon-dormant{grid-column:1/-1;border-color:rgba(140,185,255,.4);background:linear-gradient(115deg,rgba(49,77,117,.26),rgba(18,60,81,.27))}
.weapon-dormant h4{color:#c3dfff}
.weapon-dormant .weapon-sign{background:rgba(126,160,250,.18);color:#bed8ff}
.weapon-dormant .dormant-intro{font-size:11px;color:#aecddd;line-height:1.65;margin:0 0 8px}
.weapon-dormant .dormant-note{font-size:10px;color:#93b9cd;margin:8px 0 0;line-height:1.7}
.weapon-dormant li strong{color:#d2e6ff}

/* Official Weekend Tennis Lab logo + YouTube CTA */
.lab-mark-link{display:flex;min-height:300px;padding:15px;text-decoration:none;transition:border-color .2s,transform .2s}
.lab-mark-link:hover{border-color:#76e2ed;transform:translateY(-2px)}
.lab-logo-image{display:block;max-width:100%;width:min(100%,310px);height:auto;object-fit:contain}
.youtube-channel-link{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:24px;max-width:330px;padding:15px 18px;background:#cfef43;color:#09212e;text-decoration:none;border-radius:9px;font-weight:800;font-size:14px}
.youtube-channel-link:hover{background:#e5fb8c}
@media(max-width:820px){.lab-mark-link{min-height:210px}.lab-logo-image{width:min(100%,230px)}}