:root{--brandColor: #0F172A;--accentRed: #E11D48;--assetGold: #f3c507;--baseWhite: #FFFFFF;--bgGray: #F8FAFC;--premiumBlack: #1a1a1a;--body-font-size: 1.05rem;--body-line-height: 1.8}*,*:before,*:after{box-sizing:border-box}body{margin:0;padding:0;overflow-x:hidden;-webkit-font-smoothing:antialiased}.slide-title,.main-headline,.problem-title,.fortress-title,.premium-solution-title,.final-title,.core-main-title{letter-spacing:.15em!important;font-family:"Noto Serif JP",serif}.main-headline{word-break:auto-phrase;overflow-wrap:anywhere}.logic-paragraphs p,.solution-lead-text p,.core-item-text .desc,.tech-detail-box,.letter-body p,.footer-desc{font-size:var(--body-font-size)!important;line-height:var(--body-line-height)!important;color:#333}.cta-button{border-radius:4px!important;letter-spacing:.1em;transition:all .3s ease;display:inline-block;text-decoration:none;margin-bottom:40px!important}section{padding:80px 20px 0!important}.container{max-width:1100px;margin:0 auto;padding:0 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