/* ============================================================
   Knee Heating Vibration Massager ID – Indonesian Landing
   minimalist | rounded | flat | centered-minimal | outlined
   #F0DB4F yellow · #2D5C7F navy · #F2D4C9 blush · #ECF1F1 frost
   ============================================================ */
:root {
    --yellow: #F0DB4F;
    --navy:   #2D5C7F;
    --blush:  #F2D4C9;
    --frost:  #ECF1F1;
    --bg:     #ffffff;
    --surf:   #ffffff;
    --text:   #14202e;
    --muted:  #4a6070;
    --border: #dce8f0;
    --r-c:    12px;
    --r-b:    6px;
    --font:   'Inter', sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);font-size:clamp(14px,4vw,16px);background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}

/* HEADER — centered-minimal: yellow bottom */
.site-header{background:var(--surf);border-bottom:2px solid var(--yellow);padding:1.1rem 1.25rem;position:sticky;top:0;z-index:100}
.header-inner{max-width:1200px;margin:0 auto;display:flex;justify-content:center}
.site-name{font-size:clamp(13px,3.2vw,15px);font-weight:600;color:var(--navy);text-align:center}

/* PRODUCT — lots of whitespace */
.product-section{max-width:1200px;margin:0 auto;padding:4rem 1rem 0}
.product-grid{display:grid;grid-template-columns:1fr;gap:3.5rem}
@media(min-width:768px){.product-grid{grid-template-columns:1fr 1fr;gap:5rem;align-items:start}}

/* GALLERY — rounded, flat */
.gallery-wrap{border:1px solid var(--border);border-radius:var(--r-c);padding:1rem;background:var(--surf)}
.gallery-wrap input[type=radio]{display:none}
.slides{position:relative;width:100%;aspect-ratio:1/1;overflow:hidden;border-radius:8px;background:var(--frost)}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .3s ease;display:flex;align-items:center;justify-content:center}
.slide img{width:100%;height:100%;object-fit:contain}
#s1:checked~.slides #slide1,#s2:checked~.slides #slide2,#s3:checked~.slides #slide3,#s4:checked~.slides #slide4{opacity:1}
.gallery-dots{display:flex;justify-content:center;gap:6px;margin-top:.85rem}
.gallery-dots label{width:8px;height:8px;border-radius:50%;background:var(--border);cursor:pointer;transition:background .2s;display:block}
#s1:checked~.gallery-dots label[for=s1],#s2:checked~.gallery-dots label[for=s2],#s3:checked~.gallery-dots label[for=s3],#s4:checked~.gallery-dots label[for=s4]{background:var(--navy)}
.gallery-thumbs{display:flex;gap:.4rem;margin-top:.7rem;flex-wrap:wrap}
.gallery-thumbs label{cursor:pointer;border:2px solid transparent;border-radius:8px;overflow:hidden;flex:0 0 52px;transition:border-color .2s}
.gallery-thumbs label img{width:52px;height:52px;object-fit:cover}
.gallery-thumbs label:hover{border-color:var(--yellow)}
#s1:checked~.gallery-thumbs label[for=s1],#s2:checked~.gallery-thumbs label[for=s2],#s3:checked~.gallery-thumbs label[for=s3],#s4:checked~.gallery-thumbs label[for=s4]{border-color:var(--navy)}

/* INFO */
.product-info{display:flex;flex-direction:column;gap:2rem}
.product-title{font-size:clamp(20px,4.5vw,28px);font-weight:700;line-height:1.28;color:var(--text);padding-bottom:.9rem;border-bottom:2px solid var(--yellow)}

/* 6-LEVEL HEAT VISUAL */
.heat-visual{border:1px solid var(--border);border-radius:var(--r-c);padding:.85rem 1rem;background:var(--frost)}
.hv-label{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.09em;color:var(--muted);margin-bottom:.6rem}
.hv-levels{display:flex;gap:.5rem;align-items:flex-end;flex-wrap:wrap;margin-bottom:.75rem}
.hl{display:flex;flex-direction:column;align-items:center;gap:.25rem}
.hl span{font-size:9px;font-weight:600;color:var(--muted)}
.hl-dot{width:22px;height:22px;border-radius:50%}
.hl-1{background:#b3d9f0;border:1px solid #8ec5e8}
.hl-2{background:#87b8d4;border:1px solid #6099be}
.hl-3{background:#f7b733;border:1px solid #e5a020}
.hl-4{background:#f08030;border:1px solid #d86818}
.hl-5{background:#e05020;border:1px solid #c03808}
.hl-6{background:#c02010;border:1px solid #a80800}
.hv-vib{display:flex;align-items:center;gap:.75rem;padding-top:.5rem;border-top:1px solid var(--border)}
.hv-vib-label{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}
.hv-vib-dots{display:flex;gap:.6rem}
.vd{font-size:12px;color:var(--navy);letter-spacing:-2px}

/* SPEC GRID — minimalist table */
.spec-grid{display:flex;flex-direction:column;gap:0;border:1px solid var(--border);border-radius:var(--r-c);overflow:hidden}
.sg-row{display:flex;border-bottom:1px solid var(--border)}
.sg-row:last-child{border-bottom:none}
.sgk{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);padding:.42rem .7rem;border-right:1px solid var(--border);background:rgba(240,219,79,.06);min-width:90px;display:flex;align-items:center}
.sgv{font-size:clamp(12px,3.5vw,13px);font-weight:600;color:var(--text);padding:.42rem .7rem;display:flex;align-items:center}

/* FEATURE LIST — minimalist */
.feat-list{display:flex;flex-direction:column;gap:0;border-top:2px solid var(--yellow)}
.fl-item{padding:.85rem 0;border-bottom:1px solid var(--border)}
.fl-item:last-child{border-bottom:none}
.fl-title{font-size:clamp(13px,3.5vw,14px);font-weight:700;color:var(--navy);margin-bottom:.25rem}
.fl-item p{font-size:clamp(13px,3.8vw,14px);line-height:1.65;color:var(--text)}

/* CTA — outlined navy, rounded */
.cta-section{max-width:1200px;margin:0 auto;padding:2.5rem 1rem;display:flex;justify-content:center}
.cta-btn{display:inline-block;width:100%;max-width:560px;text-align:center;padding:1.1rem 2rem;min-height:56px;font-size:clamp(15px,4vw,18px);font-weight:700;color:var(--navy);background:transparent;border:2px solid var(--navy);border-radius:var(--r-b);text-decoration:none;letter-spacing:.02em;transition:background .22s,color .22s,transform .18s}
.cta-btn:hover{background:var(--navy);color:#fff;transform:translateY(-1px)}

/* REVIEWS */
.reviews-section{max-width:860px;margin:0 auto;padding:0 1rem 3.5rem}
.reviews-title{font-size:clamp(18px,5vw,22px);font-weight:700;color:var(--text);margin-bottom:1.25rem;padding-bottom:.5rem;border-bottom:1px solid var(--border)}
.review{padding:1.5rem 0;border-bottom:1px solid var(--border)}
.review:last-child{border-bottom:none}
.review-header{display:flex;align-items:flex-start;gap:.85rem;margin-bottom:.4rem}
.review-avatar{flex-shrink:0}
.review-avatar img{width:42px;height:42px;border-radius:50%;object-fit:cover;border:1px solid var(--border)}
.review-meta{display:flex;flex-direction:column;gap:.1rem}
.reviewer-name{font-weight:700;font-size:clamp(14px,3.5vw,15px);color:var(--text)}
.stars{color:var(--yellow);font-size:1rem;letter-spacing:1px;filter:brightness(.82)}
.review-headline{font-weight:600;font-size:clamp(14px,3.5vw,15px);color:var(--navy);line-height:1.4}
.review-date{font-size:13px;color:var(--muted);margin-bottom:.2rem}
.review-attr{font-size:13px;color:var(--muted);margin-bottom:.65rem}
.review-body{display:flex;flex-direction:column;gap:.5rem;font-size:clamp(14px,4vw,15px);line-height:1.75}

/* FOOTER */
.site-footer{background:var(--navy);color:rgba(255,255,255,.65);padding:1.75rem 1rem;margin-top:2rem;border-top:3px solid var(--yellow)}
.footer-inner{max-width:1200px;margin:0 auto;display:flex;flex-direction:column;align-items:center;gap:1rem;text-align:center}
@media(min-width:768px){.footer-inner{flex-direction:row;justify-content:space-between;text-align:left}}
.footer-brand{font-weight:700;font-size:clamp(12px,3vw,14px);color:#fff}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:.4rem 1.25rem}
.footer-links a{color:rgba(255,255,255,.58);text-decoration:none;font-size:13px;transition:color .2s}
.footer-links a:hover{color:var(--yellow)}