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28px;flex-direction:column;align-items:flex-start;gap:20px}.materi-intro-right{width:100%;justify-content:flex-start}.hero{grid-template-columns:1fr}.hero-left{padding-bottom:60px}.hero-right{padding:40px 6vw 80px}.materi-shell{grid-template-columns:1fr}.sidebar{display:none}.content-area{min-height:auto}.two-col,.compare-grid{grid-template-columns:1fr;gap:28px}.two-col.flip{direction:ltr}.three-col{grid-template-columns:1fr 1fr}.ft-inner{grid-template-columns:1fr}.mobile-tabs{display:flex!important}.panel{padding:40px 28px 70px}.panel-nav{flex-direction:column;gap:12px;align-items:stretch}.panel-nav-btn{justify-content:center}}@media(max-width:640px){.navbar{padding:0 20px}.nav-link:not(.pri){display:none}.hero-left{padding:60px 24px 40px}.hero-right{padding:20px 24px 60px}.hero h1{font-size:clamp(32px,8vw,46px)}.panel{padding:28px 18px 56px}.panel-title{font-size:clamp(26px,7vw,38px)}.panel-sub{font-size:15px}.three-col{grid-template-columns:1fr}.prose{font-size:15.5px}footer{padding:52px 24px 40px}.ft-inner{gap:40px}.closing-card{padding:36px 22px}.closing-quote{font-size:17px;padding:20px 24px}.scroll-hint{display:none}.materi-intro-inner{padding:20px 18px}.materi-intro-right{flex-wrap:wrap}.materi-stat{padding:12px 16px;min-width:64px}.callout{padding:16px 18px}.illus-box{border-radius:12px}.def-card{padding:20px 16px}.cklist li{padding:12px;font-size:14.5px}.panel-nav-btn{padding:10px 18px;font-size:13px}.hcard{padding:28px 24px}.hcard-av{width:90px;height:90px}.tbl-wrap,.img-box,.illus-box{margin:20px 0;border-radius:12px}.nice-tbl th,.nice-tbl td{padding:12px 14px;font-size:13.5px}.pull{font-size:17.5px;padding:18px 20px;margin:24px 0}.cmp-card{padding:18px 16px;border-radius:14px}}@media(max-width:380px){.panel{padding:20px 14px 48px}.panel-title{font-size:clamp(24px,7.5vw,34px)}.hero h1{font-size:clamp(28px,8vw,40px)}.hero-desc{font-size:15px}.btn{padding:12px 20px;font-size:13px}}