:root{
  --ink:#111; --bg:#fff; --soft:#f5f5f3; --line:#e4e4df; --muted:#6b6b66;
  --accent:#ffd400; --red:#e5322d; --green:#1a8f4c; --r:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:'Be Vietnam Pro',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);line-height:1.5}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
[hidden]{display:none!important}
.in{max-width:1040px;margin:0 auto;padding:0 16px}
.in.narrow{max-width:760px}

.topbar{background:var(--ink);color:var(--accent);text-align:center;font-size:12px;font-weight:700;padding:8px 12px}
.head{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.head-in{display:flex;align-items:center;justify-content:space-between;height:54px}
.brand{font-weight:800;font-size:17px;letter-spacing:.2px}
.btn-sm{border:0;background:var(--ink);color:var(--accent);font-weight:700;font-size:13px;padding:9px 16px;border-radius:10px;cursor:pointer}

/* hero */
.hero{background:linear-gradient(180deg,#f7f5f0 0%,#fff 100%);padding:16px 0 24px}
.hero-grid{display:grid;gap:20px}
.gallery{min-width:0}
.g-main{position:relative;aspect-ratio:4/5;background:#efe9e0;overflow:hidden;border-radius:18px;touch-action:pan-y}
.g-main img{width:100%;height:100%;object-fit:cover;object-position:center 15%}
.g-main img.contain{object-fit:contain;object-position:center}
.g-count{position:absolute;top:12px;right:12px;background:rgba(0,0,0,.6);color:#fff;font-size:12px;padding:3px 10px;border-radius:99px;z-index:2}
.g-nav{position:absolute;top:50%;transform:translateY(-50%);width:36px;height:36px;border-radius:50%;border:0;background:rgba(255,255,255,.92);font-size:22px;line-height:1;cursor:pointer;z-index:2;box-shadow:0 1px 4px rgba(0,0,0,.25)}
.g-nav.prev{left:10px}.g-nav.next{right:10px}
.g-thumbs{display:flex;gap:8px;padding:10px 0 0;overflow-x:auto;scrollbar-width:none}
.g-thumbs::-webkit-scrollbar{display:none}
.g-thumbs button{flex:0 0 60px;height:60px;border-radius:10px;border:2px solid transparent;overflow:hidden;padding:0;background:var(--soft);cursor:pointer}
.g-thumbs button.on{border-color:var(--ink)}
.g-thumbs img{width:100%;height:100%;object-fit:cover}

.info{min-width:0}
.pill{display:inline-block;font-size:12px;font-weight:600;color:#0b6b36;background:#e6f6ec;border-radius:99px;padding:4px 12px;margin-bottom:10px}
h1{font-size:24px;line-height:1.25;font-weight:800;margin-bottom:6px}
.tagline{color:var(--muted);font-size:14px;margin-bottom:14px}
.features{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:20px}
.feature{border:1px solid var(--line);border-radius:12px;padding:10px;font-size:13px;background:#fff}
.feature b{display:block;font-size:13px}
.feature span{color:var(--muted);font-size:12px}
.h-combo{font-size:16px;font-weight:800;margin-bottom:12px}

/* combos */
.combo{display:block;position:relative;border:2px solid var(--line);border-radius:var(--r);padding:14px;margin-bottom:12px;cursor:pointer;background:#fff}
.combo input{position:absolute;opacity:0}
.combo.on{border-color:var(--ink);background:#fffbe0}
.combo .badge{position:absolute;top:-10px;right:12px;background:var(--ink);color:var(--accent);font-size:10px;font-weight:800;padding:3px 9px;border-radius:99px}
.combo .c-head{display:flex;justify-content:space-between;gap:8px;align-items:baseline}
.combo .c-name{font-weight:700}
.combo .c-sub{font-size:12px;color:var(--muted)}
.combo .c-price{font-size:22px;font-weight:800;margin-top:6px}
.combo .c-per{font-size:12px;font-weight:600;color:var(--green);margin-left:8px}
.combo .c-old{font-size:13px;color:var(--muted);text-decoration:line-through;margin-left:8px;font-weight:400}
.combo .c-save{background:var(--red);color:#fff;font-size:11px;font-weight:700;padding:2px 7px;border-radius:6px;margin-left:8px}
.combo .c-ship{font-size:12px;margin-top:4px;color:var(--muted)}
.combo .c-ship.free{color:var(--green);font-weight:600}

.cta{display:block;width:100%;border:0;border-radius:12px;background:var(--accent);color:var(--ink);font-weight:800;font-size:15px;padding:15px 12px;cursor:pointer;text-align:center;box-shadow:0 3px 0 #c9a800}
.cta:active{transform:translateY(2px);box-shadow:0 1px 0 #c9a800}
.cta[disabled]{opacity:.6;cursor:wait}
.trust{list-style:none;display:flex;flex-wrap:wrap;gap:6px 14px;justify-content:center;font-size:12px;color:var(--muted);margin-top:12px}

/* sections */
.sec{padding:30px 0}
.sec.alt{background:var(--soft)}
.sec h2{font-size:19px;font-weight:800;margin-bottom:16px}
.ben-grid{display:grid;gap:14px}
.ben{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff}
.ben img{width:100%;aspect-ratio:1/1;object-fit:cover;object-position:center 20%;background:var(--soft)}
.ben div{padding:14px}
.ben h3{font-size:15px;margin-bottom:4px}
.ben p{font-size:13px;color:#444}

.compare{width:100%;border-collapse:collapse;font-size:13px;background:#fff;border-radius:12px;overflow:hidden}
.compare th,.compare td{padding:11px 8px;text-align:center;border-bottom:1px solid var(--line)}
.compare th{background:var(--ink);color:#fff}
.compare th.us{color:var(--ink);background:var(--accent)}
.compare td:first-child{text-align:left;font-weight:600}
.compare td:nth-child(2){color:var(--muted)}
.compare td:nth-child(3){font-weight:700}

.rev{border:1px solid var(--line);border-radius:var(--r);padding:12px;margin-bottom:10px;font-size:13px;background:#fff}
.rev b{font-size:14px}
.rev small{color:var(--muted);display:block;margin-bottom:4px}
.rev img{width:64px;height:64px;object-fit:cover;border-radius:8px;margin-top:8px}

.faq-item{border:1px solid var(--line);border-radius:12px;margin-bottom:8px;overflow:hidden;background:#fff}
.faq-item summary{padding:13px 14px;font-weight:600;font-size:14px;cursor:pointer}
.faq-item p{padding:0 14px 14px;font-size:13px;color:#444}

/* order form */
.order{background:var(--soft);padding:34px 0 40px}
.sec h2.o-title{text-align:center;font-size:24px;margin-bottom:4px}
.o-sub{text-align:center;color:var(--muted);font-size:14px;margin:0 auto 18px;max-width:420px}
form{max-width:540px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px 18px;box-shadow:0 6px 24px rgba(0,0,0,.05)}
label,.fl{display:block;font-size:13px;font-weight:700;margin-bottom:14px}
.fl{margin-bottom:8px}
.fl .free{color:var(--green);font-weight:500}
label.mini{font-size:11px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.3px;margin-bottom:12px}
label.mini input,label.mini select{text-transform:none;letter-spacing:0}
input[type=text],input[type=tel],select,textarea{display:block;width:100%;margin-top:5px;padding:12px;border:1.5px solid var(--line);border-radius:10px;background:#fff;font-weight:400;font-size:16px;color:var(--ink)}
textarea{resize:vertical;min-height:64px}
select:disabled{background:var(--soft);color:#9a9a94}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--ink)}
.bad{border-color:var(--red)!important;background:#fff5f5}
.hp{position:absolute!important;left:-9999px;width:1px;height:1px;opacity:0}
.note-s{font-size:12px;color:var(--muted);margin:-8px 0 14px}

.tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;background:var(--soft);border-radius:12px;padding:4px;margin-bottom:12px}
.tabs button{border:0;background:transparent;border-radius:9px;padding:8px 6px;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:1px;min-width:0}
.tabs b{font-size:13px}
.tabs small{font-size:10.5px;color:var(--muted);line-height:1.2;text-align:center}
.tabs button.on{background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.12)}

.cr{display:flex;align-items:center;gap:12px;border:1.5px solid var(--line);border-radius:12px;padding:12px 14px;margin-bottom:10px;cursor:pointer;background:#fff}
.cr.on{border-color:var(--ink);background:#fffbe0}
.cr .dot{width:20px;height:20px;border-radius:50%;border:2px solid #aaa;flex:none;position:relative}
.cr.on .dot{border-color:var(--ink)}
.cr.on .dot::after{content:'';position:absolute;inset:3px;border-radius:50%;background:var(--ink)}
.cr .t{flex:1;min-width:0}
.cr .t b{display:block;font-size:14px}
.cr .t small{font-size:12px;color:var(--muted)}
.cr .p{font-weight:800;font-size:16px;color:#e8590c;white-space:nowrap}

.cl{display:flex;align-items:center;gap:10px;border:1.5px solid var(--line);border-radius:12px;padding:8px 12px;margin-bottom:8px;background:#fff;min-height:48px}
.cl.on{border-color:var(--ink);background:#fffbe0}
.cl>i{width:18px;height:18px;border-radius:50%;border:1px solid rgba(0,0,0,.25);flex:none}
.cl .cn{flex:1;font-size:14px;font-weight:600}
.cl.single{cursor:pointer}
.cl .dot{width:20px;height:20px;border-radius:50%;border:2px solid #aaa;flex:none;position:relative}
.cl.on .dot{border-color:var(--ink)}
.cl.on .dot::after{content:'';position:absolute;inset:3px;border-radius:50%;background:var(--ink)}
.step{display:flex;align-items:center;gap:6px}
.step b{min-width:24px;text-align:center;font-size:16px}
.step button{width:34px;height:34px;border-radius:50%;border:1.5px solid var(--ink);background:#fff;font-size:20px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0}
.step button:disabled{opacity:.3;cursor:not-allowed;border-color:var(--line)}
.step button:active:not(:disabled){background:var(--accent)}
#colorHint{margin:-2px 0 14px}
#colorHint.ok{color:var(--green);font-weight:600}
#colorHint.bad{color:var(--red);font-weight:700}
.summary{background:var(--soft);border-radius:12px;padding:12px;margin:6px 0 12px;font-size:14px}
.summary div{display:flex;justify-content:space-between;padding:2px 0}
.summary .tot{font-weight:800;font-size:17px;border-top:1px dashed #ccc;margin-top:6px;padding-top:8px}
.summary .free{color:var(--green);font-weight:700}
.error{background:#fff0f0;color:var(--red);border-radius:10px;padding:10px;font-size:13px;margin-bottom:10px;font-weight:600}
.privacy{font-size:12px;color:var(--muted);text-align:center;margin-top:10px}

.foot{background:#111827;color:#fff;margin-top:0}
.foot-in{display:flex;justify-content:space-between;align-items:center;gap:12px;padding-top:22px;padding-bottom:22px}
.foot .fbrand{font-size:15px}
.foot a{color:#e5e7eb;font-size:13px;text-decoration:none}
.foot a:hover{text-decoration:underline}
.foot-copy{border-top:1px solid rgba(255,255,255,.1);text-align:center;font-size:12px;color:#9ca3af;padding:14px 16px 18px}
.policy{padding:28px 0 44px}
.policy h1{font-size:26px;margin-bottom:18px}
.policy h2{font-size:18px;margin:22px 0 8px}
.policy ul{padding-left:20px}
.policy li,.policy p{font-size:14px;color:#374151;margin-bottom:6px}
.policy .back{display:inline-block;margin-bottom:14px;font-size:13px;color:var(--muted);text-decoration:none}

.sticky{position:fixed;left:0;right:0;bottom:0;z-index:20;background:#fff;border-top:1px solid var(--line);padding:10px 12px calc(10px + env(safe-area-inset-bottom));display:flex;gap:12px;align-items:center;box-shadow:0 -4px 16px rgba(0,0,0,.08)}
.s-info{display:flex;flex-direction:column;flex:1;min-width:0;line-height:1.25}
.s-info strong{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.s-info span{font-size:18px;font-weight:800}
.s-btn{width:auto;padding:13px 22px;background:var(--ink);color:var(--accent);box-shadow:none;white-space:nowrap}

.done{position:fixed;inset:0;background:rgba(0,0,0,.65);z-index:50;display:flex;align-items:center;justify-content:center;padding:20px}
.done-box{background:#fff;border-radius:18px;padding:26px 20px;max-width:380px;width:100%;text-align:center}
.done-box .tick{width:56px;height:56px;border-radius:50%;background:var(--green);color:#fff;font-size:30px;line-height:56px;margin:0 auto 12px}
.done-box h3{font-size:19px;margin-bottom:8px}
.done-box p{font-size:14px;margin-bottom:8px;color:#333}
.done-box .cta{margin-top:14px}

body:has(.sticky) .foot-copy{padding-bottom:calc(84px + env(safe-area-inset-bottom))}
/* tablet */
@media(min-width:700px){
  .ben-grid{grid-template-columns:1fr 1fr}
  .features{grid-template-columns:repeat(4,1fr)}
  .feature{padding:10px 8px}
}
/* desktop */
@media(min-width:900px){
  .sticky{display:none}
  body:has(.sticky) .foot-copy{padding-bottom:18px}
  .hero{padding:36px 0 44px}
  .hero-grid{grid-template-columns:minmax(0,480px) minmax(0,1fr);gap:56px;align-items:start}
  .gallery{position:sticky;top:76px}
  h1{font-size:32px}
  .tagline{font-size:16px}
  .features{grid-template-columns:1fr 1fr}
  .sec{padding:44px 0}
  .sec h2{font-size:22px}
}
@media(max-width:420px){h1{font-size:21px}}
@media(max-width:340px){.features{grid-template-columns:1fr}.cta{font-size:14px}.tabs small{display:none}}