/* Đá Mỹ Nghệ Oanh Vân — giao diện v11
   Thiết kế cho người xem 30–65 tuổi: chữ lớn, tương phản cao, nút bấm rộng,
   mọi biểu tượng đều có chữ đi kèm. Màu lấy từ logo: kem, xanh rêu, vàng đồng. */
:root{
 --bg:#faf7f0;--surface:#fff;--cream:#f3ede0;--stone:#e7e4dc;
 --ink:#1c2621;--text-2:#3b4841;--line:#d9d1bf;--line-strong:#b9ae96;
 --brand:#1d3b33;--brand-hover:#2a5146;--brand-ink:#fff;
 --gold:#7a571a;--gold-deco:#c09a4e;
 --zalo:#0068ff;--zalo-hover:#0054cc;
 --focus:#c07a10;
 --radius:10px;--shadow:0 1px 2px #1c26210f,0 6px 24px #1c26210d;
 --serif:"Noto Serif","Times New Roman",Times,serif; /* Không dùng Georgia: lỗi dấu tiếng Việt trên Windows */
 --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
 --header-h:72px;
}
html{font-size:112.5%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 12px);-webkit-text-size-adjust:100%}
html.large-text{font-size:127%}
@media(min-width:1024px){html{font-size:118.75%}html.large-text{font-size:137.5%}}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;font-family:var(--sans);line-height:1.7;color:var(--ink);background:var(--bg);padding-bottom:calc(68px + env(safe-area-inset-bottom))}
@media(min-width:1024px){body{padding-bottom:0}}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,p,figure,dl,dd{margin:0}
p+p{margin-top:1em}
h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.3;color:var(--ink);text-wrap:balance}
h1{font-size:clamp(2rem,6.5vw,3rem)}
h2{font-size:clamp(1.65rem,4.5vw,2.4rem)}
h3{font-size:1.3rem}
a{color:var(--brand);text-underline-offset:4px}
a:hover{color:var(--brand-hover)}
button,select{font:inherit;color:inherit}
button{cursor:pointer}
button:disabled{cursor:not-allowed;opacity:.5}
:focus-visible{outline:3px solid var(--focus);outline-offset:3px;border-radius:4px}
[hidden]{display:none!important}
.icon{width:1.25em;height:1.25em;flex-shrink:0}
.container{width:min(1200px,100% - 32px);margin-inline:auto}
@media(min-width:720px){.container{width:min(1200px,100% - 64px)}}
.section{padding-block:56px}
@media(min-width:1024px){.section{padding-block:88px}}
.eyebrow{font-size:.85rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--gold);margin-bottom:10px}
.skip-link{position:fixed;top:-100px;left:16px;z-index:100;background:#fff;padding:12px 16px;border-radius:6px}
.skip-link:focus{top:12px}

/* Nút bấm: tối thiểu 52–60px, có chữ rõ ràng */
.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding:12px 22px;border-radius:var(--radius);border:2px solid transparent;font-weight:700;font-size:1rem;line-height:1.3;text-decoration:none;text-align:center;transition:background .15s,border-color .15s,color .15s}
.button.large{min-height:60px;padding:14px 26px;font-size:1.05rem}
.button.full{width:100%}
.button.primary{background:var(--brand);color:var(--brand-ink)}
.button.primary:hover{background:var(--brand-hover);color:#fff}
.button.outline{background:transparent;color:var(--brand);border-color:var(--brand)}
.button.outline:hover{background:var(--brand);color:#fff}
.button.light{background:#fff;color:var(--brand)}
.button.light:hover{background:var(--cream);color:var(--brand)}
.button.zalo{background:var(--zalo);color:#fff}
.button.zalo:hover{background:var(--zalo-hover);color:#fff}

/* Đầu trang */
.site-header{position:sticky;top:0;z-index:30;background:#fffdf8f2;backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:16px;min-height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);margin-right:auto}
.brand-mark{width:48px;height:48px;border-radius:50%;flex-shrink:0}
.brand-text strong{display:block;font-family:var(--serif);font-size:1.15rem;letter-spacing:.03em;line-height:1.15;white-space:nowrap}
@media(min-width:1024px){.brand-text strong{font-size:1.3rem}}
.brand-text small{display:block;font-size:.75rem;color:var(--text-2);line-height:1.3;white-space:nowrap}
.main-nav{display:none}
.header-actions{display:flex;align-items:center;gap:8px}
.text-size{display:inline-flex;align-items:center;gap:6px;min-height:48px;padding:6px 10px;border:2px solid var(--line-strong);background:#fff;border-radius:var(--radius);font-weight:700}
.text-size>span:first-child{font-family:var(--serif);font-size:.85rem}
.text-size>span:first-child b{font-size:1.2rem}
.text-size[aria-pressed="true"]{background:var(--brand);border-color:var(--brand);color:#fff}
.text-size-label{display:none}
.button.call{min-height:48px;padding:8px 16px}
.call-long{display:none}
@media(min-width:560px){.text-size-label{display:inline}.call-long{display:inline}.call-short{display:none}}
@media(min-width:1024px){
 :root{--header-h:84px}
 .brand-mark{width:56px;height:56px}
 .main-nav{display:flex;gap:6px;margin-right:12px}
 .main-nav a{padding:10px 12px;border-radius:8px;text-decoration:none;font-weight:600;color:var(--ink)}
 .main-nav a:hover{background:var(--cream);color:var(--brand)}
 .button.call{font-size:1.05rem}
}

/* Mở đầu */
.hero{padding-block:32px 48px;background:linear-gradient(var(--bg),var(--cream))}
.hero-grid{display:grid;gap:32px}
.hero h1 span{color:var(--gold)}
.lead{font-size:1.1rem;color:var(--text-2);margin-top:16px;max-width:36em}
.hero-actions{display:flex;flex-direction:column;gap:12px;margin-top:28px}
.trust{list-style:none;padding:0;margin:32px 0 0;display:grid;gap:14px}
@media(min-width:720px){.trust{grid-template-columns:repeat(3,1fr);gap:24px}}
.trust li{padding-left:16px;border-left:3px solid var(--gold-deco);color:var(--text-2);font-size:.95rem;line-height:1.5}
.trust b{display:block;color:var(--ink);font-size:1rem}
.hero-photo{background:#fff;padding:8px;border-radius:14px;box-shadow:var(--shadow)}
.hero-photo img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:8px}
.hero-photo figcaption{font-size:.9rem;color:var(--text-2);padding:10px 6px 4px}
@media(min-width:560px){.hero-actions{flex-direction:row;flex-wrap:wrap}}
@media(min-width:1024px){
 .hero{padding-block:64px 80px}
 .hero-grid{grid-template-columns:1fr 1.05fr;gap:56px;align-items:center}
 .trust{margin-top:48px}
}

/* Tiêu đề phần */
.section-heading{max-width:760px;margin-bottom:32px}
.section-heading>p:last-child{color:var(--text-2);margin-top:12px;font-size:1.05rem}

/* Thẻ sản phẩm */
.cards{display:grid;gap:20px}
@media(min-width:720px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.cards{grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}}
.product-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
.product-image{width:100%;aspect-ratio:1.35;object-fit:contain;background:var(--stone)}
.product-content{display:flex;flex-direction:column;flex:1;padding:20px}
.product-content .category{font-size:.82rem;font-weight:700;letter-spacing:.04em;color:var(--gold);margin-bottom:6px}
.product-content h3{font-size:1.35rem;margin-bottom:8px}
.product-content .short{color:var(--text-2);margin-bottom:14px}
.product-size{display:flex;flex-wrap:wrap;gap:4px 12px;font-size:.92rem;color:var(--text-2);padding:10px 0;border-top:1px solid var(--line);margin-top:auto}
.product-size b{color:var(--ink)}
.card-actions{display:grid;grid-template-columns:1fr auto;gap:10px;margin-top:12px}
.card-actions .button{min-height:56px}
.card-actions .ask-link{min-height:56px;padding:10px 14px;border:2px solid var(--line-strong);border-radius:var(--radius);display:inline-flex;align-items:center;gap:6px;font-weight:700;text-decoration:none;color:var(--brand);background:#fff}
.card-actions .ask-link:hover{border-color:var(--brand)}
.legacy{margin-top:32px;border:1px solid var(--line);border-radius:12px;background:#fff;padding:4px 20px}
.legacy summary,.faq summary{cursor:pointer;font-weight:700;min-height:56px;display:flex;align-items:center;gap:10px;list-style:none}
.legacy summary::-webkit-details-marker,.faq summary::-webkit-details-marker{display:none}
.legacy summary::before,.faq summary::before{content:"+";display:grid;place-items:center;width:30px;height:30px;flex-shrink:0;border-radius:50%;background:var(--cream);color:var(--brand);font-size:1.2rem;line-height:1}
.legacy[open] summary::before,.faq details[open] summary::before{content:"−"}
.legacy>p{color:var(--text-2);margin-bottom:14px}
.legacy-buttons{display:flex;flex-wrap:wrap;gap:10px;padding-bottom:18px}
.legacy-buttons button{min-height:52px;padding:10px 16px;border:2px solid var(--line-strong);background:#fff;border-radius:var(--radius);font-weight:600;color:var(--brand)}
.legacy-buttons button:hover{border-color:var(--brand)}

/* Khu xem 3D */
.experience{background:var(--cream);border-block:1px solid var(--line)}
.model-tabs{display:flex;gap:10px;overflow-x:auto;padding:4px 2px 14px;margin-bottom:8px;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch}
.model-tab{flex:0 0 auto;scroll-snap-align:start;display:flex;align-items:center;gap:10px;min-height:64px;padding:6px 14px 6px 6px;border:2px solid var(--line);background:#fff;border-radius:12px;text-align:left;line-height:1.25}
.model-tab img{width:56px;height:44px;object-fit:cover;border-radius:6px;background:var(--stone)}
.model-tab span{display:block;font-weight:700;font-size:.92rem;max-width:11em}
.model-tab small{display:block;font-size:.78rem;color:var(--text-2);font-weight:400}
.model-tab:hover{border-color:var(--line-strong)}
.model-tab[aria-pressed="true"]{border-color:var(--brand);background:#f1f6f3;box-shadow:inset 0 0 0 1px var(--brand)}
@media(min-width:1024px){.model-tabs{display:grid;grid-template-columns:repeat(5,1fr);overflow:visible}.model-tab span{max-width:none}}

.studio{display:grid;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow)}
.viewer-panel{position:relative;background:var(--stone);min-height:340px;height:62vh;max-height:560px}
@media(min-width:1024px){.studio{grid-template-columns:minmax(0,1.65fr) minmax(340px,1fr);grid-template-areas:"viewer info" "tools info"}.studio{grid-template-rows:minmax(560px,1fr) auto}.viewer-panel{grid-area:viewer;height:auto;max-height:none}.viewer-tools{grid-area:tools}.model-info{grid-area:info;border-left:1px solid var(--line)}}
model-viewer{display:block;width:100%;height:100%;--poster-color:transparent;background:var(--stone)}
.viewer-panel:fullscreen{max-height:none;height:100%}
.viewer-cover{position:absolute;inset:0;display:grid;place-items:center;background:var(--stone);transition:opacity .35s}
.viewer-cover.fade{opacity:0;pointer-events:none}
.viewer-cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;opacity:.95}
.cover-box{position:relative;display:grid;justify-items:center;gap:10px;width:min(92%,440px);padding:18px;border-radius:14px;background:#fffffff0;box-shadow:var(--shadow);text-align:center}
.cover-note{font-size:.92rem;color:var(--text-2);line-height:1.5}
.cover-note:empty{display:none}
.progress{width:100%}
.progress-bar{height:14px;background:var(--stone);border-radius:99px;overflow:hidden;border:1px solid var(--line)}
.progress-bar span{display:block;height:100%;width:0;background:var(--brand);border-radius:99px;transition:width .2s}
.progress p{margin-top:8px;font-weight:700;font-size:1rem}
.viewer-cover.loading .cover-box{align-self:end;margin-bottom:16px}
.viewer-tools{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;padding:10px;border-top:1px solid var(--line);background:#fff;align-content:start}
@media(min-width:560px){.viewer-tools{display:flex;flex-wrap:wrap;justify-content:center}.viewer-tools button{flex:1 1 0;white-space:nowrap}}
.viewer-tools button{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-height:60px;padding:6px 4px;font-size:.8rem;line-height:1.2;white-space:nowrap;border:2px solid var(--line-strong);background:#fff;border-radius:var(--radius);font-weight:700;color:var(--brand)}
.viewer-tools button:hover:not(:disabled){border-color:var(--brand)}
.viewer-tools button[aria-pressed="true"]{background:var(--brand);border-color:var(--brand);color:#fff}
.model-info{padding:24px 20px;border-top:1px solid var(--line)}
@media(min-width:1024px){.model-info{padding:28px;border-top:0}}
.model-info h3{font-size:1.55rem;margin-bottom:10px}
.model-desc{color:var(--text-2)}
.dimensions{margin:20px 0;padding:14px 16px;background:var(--bg);border:1px solid var(--line);border-radius:12px}
.dimensions>p{font-size:.88rem;color:var(--text-2);margin-bottom:6px}
.dimensions dl{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;text-align:center}
.dimensions dt{font-size:.85rem;color:var(--text-2)}
.dimensions dd{font-family:var(--serif);font-size:1.3rem;font-weight:600;line-height:1.3}
.dimensions dd small{font-family:var(--sans);font-size:.8rem;font-weight:400;color:var(--text-2)}
.note{font-size:.9rem;color:var(--text-2);margin-top:10px;line-height:1.5}
.qr-block{display:none;gap:16px;align-items:center;padding:14px;border:1px dashed var(--line-strong);border-radius:12px}
.qr-block strong{display:block;line-height:1.35}
.qr-block p{font-size:.9rem;color:var(--text-2);margin-top:4px;line-height:1.5}
#qr{flex-shrink:0;background:#fff;padding:6px;border-radius:6px;min-width:124px;min-height:124px}
#qr img{width:112px;height:112px;image-rendering:pixelated}
/* Máy tính dùng chuột: hiện mã QR thay cho nút đặt thử */
@media(hover:hover) and (pointer:fine){.qr-block{display:flex}.ar-mobile{display:none}}
.ask{display:grid;gap:10px;margin-top:22px;padding-top:20px;border-top:1px solid var(--line)}
.ask>p{font-weight:700}
.model-links{margin-top:18px;font-size:.88rem;color:var(--text-2)}
.model-info details{margin-top:14px}
.model-info details summary{cursor:pointer;font-weight:600;min-height:44px;display:flex;align-items:center}
.model-info details img{margin-top:10px;border-radius:8px}

/* Hướng dẫn & câu hỏi */
.guide-grid{display:grid;gap:48px}
@media(min-width:1024px){.guide-grid{grid-template-columns:1fr 1fr;gap:72px}}
.steps{list-style:none;margin:24px 0 0;padding:0}
.steps li{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}
.steps li:first-child{padding-top:0}
.steps li>span{display:grid;place-items:center;flex-shrink:0;width:48px;height:48px;border-radius:50%;background:var(--brand);color:#fff;font-family:var(--serif);font-size:1.3rem;font-weight:600}
.steps h3{font-size:1.2rem;margin-bottom:4px}
.steps p{color:var(--text-2)}
.faq{margin-top:24px;display:grid;gap:10px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:4px 18px}
.faq details[open]{border-color:var(--line-strong)}
.faq details p{color:var(--text-2);padding:0 0 16px 40px}

/* Làng nghề */
.village{background:#f3ede0;border-top:1px solid var(--line)}
.village-grid{display:grid;gap:32px}
@media(min-width:1024px){.village-grid{grid-template-columns:.8fr 1.2fr;gap:72px;align-items:center}}
.village figure img{width:100%;aspect-ratio:3/4;max-height:620px;object-fit:cover;object-position:50% 68%;border-radius:14px}
.village figcaption{font-size:.9rem;color:var(--text-2);margin-top:10px}
.village h2{margin-bottom:18px}
.village p{color:var(--text-2)}
.atelier{margin-top:24px;padding:20px;background:#fff;border-radius:12px;border-left:4px solid var(--gold-deco)}
.atelier h3{margin-bottom:8px}
.source-link{display:inline-block;margin-top:20px;font-size:.92rem;line-height:1.5}

/* Liên hệ */
.contact{background:var(--brand);color:#fff}
.contact h2{color:#fff;margin-bottom:14px}
.contact .eyebrow{color:#e2c587}
.contact p{color:#e3ebe6}
.contact .place{margin-top:16px;font-weight:700;color:#fff}
.contact-grid{display:grid;gap:32px}
@media(min-width:1024px){.contact-grid{grid-template-columns:1.2fr 1fr;gap:72px;align-items:center}}
.contact-card{display:grid;gap:12px;padding:24px;background:#ffffff14;border:1px solid #ffffff33;border-radius:16px}
.phone-big{font-family:var(--serif);font-size:clamp(2rem,8vw,2.8rem);font-weight:600;color:#fff;text-decoration:none;line-height:1.2;white-space:nowrap}
.phone-big:hover{color:#e2c587}

/* Chân trang */
.site-footer{padding-block:32px;border-top:1px solid var(--line)}
.footer-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px}
.footer-logo{width:140px;height:140px;border-radius:12px}
.site-footer p{font-size:.92rem;color:var(--text-2)}

/* Thanh liên hệ cố định trên điện thoại */
.mobile-bar{position:fixed;left:0;right:0;bottom:0;z-index:40;display:grid;grid-template-columns:1fr 1fr 1.2fr;background:#fff;border-top:1px solid var(--line-strong);padding-bottom:env(safe-area-inset-bottom);box-shadow:0 -4px 16px #1c262114}
.mobile-bar a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-height:64px;font-size:.9rem;font-weight:700;text-decoration:none;color:var(--brand)}
.mobile-bar a.zalo{color:var(--zalo)}
.mobile-bar a.call{background:var(--brand);color:#fff}
.mobile-bar .icon{width:1.4em;height:1.4em}
@media(min-width:1024px){.mobile-bar{display:none}}

.notice{padding:16px;background:#fff4dc;border-radius:10px;margin-bottom:20px}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}