/* Bảy Sắc — giao diện cửa hàng cá cảnh (demo). Phẳng, không gradient: xanh đại dương đậm + san hô + vàng nắng trên nền bọt biển. */
:root {
  --ink: #06203A; --deep: #0B3A5E; --teal: #0B7285; --accent: #FF6A4D; --accent-d: #F2503A; --sun: #FFC83D; --aqua: #19C3D6; --violet: #7B5CFF;
  --foam: #F2F9FB; --foam-2: #E2F0F4; --paper: #fff; --muted: #56707F; --line: rgba(6, 32, 58, .12); --line-d: rgba(255, 255, 255, .16); --ok: #1F7A4E;
  --font-display: 'Lexend', 'Be Vietnam Pro', system-ui, sans-serif; --font-sans: 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --r-sm: 14px; --r-md: 22px; --r-lg: 32px; --r-xl: 44px; --gutter: 24px; --maxw: 1240px; --hd-h: 76px;
  --shadow: 0 1px 2px rgba(6, 32, 58, .06), 0 10px 28px rgba(6, 32, 58, .09); --shadow-lg: 0 26px 64px rgba(6, 32, 58, .2);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; -webkit-text-size-adjust: 100%; }
body { margin: 0; font: 400 16px/1.65 var(--font-sans); color: var(--ink); background: var(--foam); -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-display); font-weight: 700; line-height: 1.12; letter-spacing: -.025em; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; cursor: pointer; }
.wrap { width: 100%; max-width: calc(var(--maxw) + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter); }
.ico { width: 18px; height: 18px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; vertical-align: -3px; }
.ico-lg { width: 24px; height: 24px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font: 700 13px/1 var(--font-sans); letter-spacing: .1em; text-transform: uppercase; color: var(--teal); }
.eyebrow::before { content: ''; width: 26px; height: 2px; background: currentColor; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 46px; padding: 0 22px; border-radius: 999px; border: 2px solid transparent; font: 700 15px var(--font-sans); white-space: nowrap; transition: transform .15s, background .15s, color .15s, border-color .15s; }
.btn:hover { transform: translateY(-2px); }
.btn-accent { background: var(--accent); color: var(--ink); } .btn-accent:hover { background: var(--accent-d); }
.btn-dark { background: var(--ink); color: #fff; } .btn-dark:hover { background: var(--deep); }
.btn-line { border-color: var(--ink); color: var(--ink); } .btn-line:hover { background: var(--ink); color: #fff; }
.btn-line-light { border-color: rgba(255, 255, 255, .55); color: #fff; } .btn-line-light:hover { background: #fff; color: var(--ink); }
.btn-lg { height: 54px; padding: 0 30px; font-size: 16px; }
.btn-sm { height: 38px; padding: 0 16px; font-size: 14px; }

/* top line + header: thanh trắng phủ ngang, mega menu mở sát dưới */
.topline { background: var(--ink); color: #CBE4EE; font-size: 13px; }
.topline .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 38px; }
.topline b { color: var(--sun); font-weight: 600; }
.topline a { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; } .topline a:hover { color: var(--sun); }
.topline .tl-l { display: flex; gap: 22px; flex-wrap: wrap; }
.hd { position: sticky; top: 0; z-index: 80; background: rgba(255, 255, 255, .95); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); transition: box-shadow .2s; }
.hd.scrolled { box-shadow: var(--shadow); }
.hd-in { display: flex; align-items: center; gap: 20px; height: var(--hd-h); }
.brand { display: inline-flex; align-items: center; gap: 12px; font: 700 23px var(--font-display); letter-spacing: -.03em; white-space: nowrap; }
.brand-mark { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50% 50% 50% 14px; background: var(--accent); color: var(--ink); transform: rotate(-8deg); }
.brand img { height: 40px; width: auto; }
.nav { display: flex; align-items: stretch; gap: 2px; height: 100%; margin-inline: auto; }
.nav-item { position: static; display: flex; align-items: center; }
.nav-link { position: relative; display: inline-flex; align-items: center; gap: 7px; height: 100%; padding: 0 13px; font: 600 15px var(--font-sans); color: var(--ink); white-space: nowrap; }
.nav-link::after { content: ''; position: absolute; left: 13px; right: 13px; bottom: 0; height: 4px; border-radius: 4px 4px 0 0; background: var(--accent); transform: scaleX(0); transition: transform .2s; }
.nav-link:hover::after, .nav-item:hover > .nav-link::after, .nav-link.is-active::after { transform: scaleX(1); }
.nav-link .ico { width: 15px; height: 15px; transition: transform .2s; } .nav-item:hover > .nav-link .ico { transform: rotate(180deg); }
.dd { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); flex-shrink: 0; } .dd-sun { background: var(--sun); } .dd-violet { background: var(--violet); } .dd-aqua { background: var(--aqua); }
.hd-actions { display: flex; align-items: center; gap: 8px; }
.hd-tel { display: inline-flex; align-items: center; gap: 8px; height: 46px; padding: 0 14px; border-radius: 999px; font: 700 14px var(--font-sans); white-space: nowrap; } .hd-tel:hover { background: var(--foam); }
.hd-tel .ico { width: 18px; height: 18px; color: var(--teal); }
.menu-btn { display: none; width: 46px; height: 46px; place-items: center; border: 0; border-radius: 50%; background: var(--ink); color: #fff; }
.mega, .nav-sub { position: absolute; left: 0; right: 0; top: 100%; background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transform: translateY(8px); transition: opacity .18s, transform .18s, visibility .18s; }
.nav-item:hover > .mega, .nav-item:focus-within > .mega, .nav-item:hover > .nav-sub, .nav-item:focus-within > .nav-sub { opacity: 1; visibility: visible; transform: none; }
.mega-in { display: grid; grid-template-columns: 280px 1fr; gap: 36px; padding: 28px var(--gutter) 32px; max-width: calc(var(--maxw) + var(--gutter) * 2); margin-inline: auto; }
.mega-subs h4 { font-size: 24px; margin-bottom: 16px; }
.mega-subs a { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 11px 14px; border-radius: var(--r-sm); font-weight: 600; } .mega-subs a:hover { background: var(--foam); }
.mega-subs small { color: var(--muted); font-weight: 500; font-size: 13px; }
.mega-subs .mega-all { margin-top: 12px; background: var(--accent); color: var(--ink); justify-content: center; border-radius: 999px; font-weight: 700; } .mega-subs .mega-all:hover { background: var(--accent-d); }
.mega-feat { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.mf { display: block; border-radius: var(--r-md); overflow: hidden; background: var(--foam); transition: transform .2s; } .mf:hover { transform: translateY(-4px); }
.mf img { aspect-ratio: 4 / 3; width: 100%; object-fit: cover; }
.mf div { padding: 12px 16px 16px; } .mf b { display: block; font: 700 15px/1.3 var(--font-sans); } .mf span { display: block; margin-top: 4px; font-size: 14px; color: var(--teal); font-weight: 700; }
.nav-sub { left: auto; right: auto; width: 320px; padding: 10px; border: 1px solid var(--line); border-radius: 0 0 var(--r-md) var(--r-md); }
.nav-item { position: relative; } .nav-item.has-mega { position: static; }
.nav-sub a { display: block; padding: 11px 14px; border-radius: var(--r-sm); font-weight: 600; } .nav-sub a:hover { background: var(--foam); }
/* hero trang chủ */
.hero { position: relative; background: var(--ink); color: #fff; border-radius: 0 0 var(--r-xl) var(--r-xl); overflow: hidden; isolation: isolate; }
.hero .bubble { position: absolute; border-radius: 50%; background: rgba(25, 195, 214, .14); z-index: -1; }
.hero .b1 { width: 420px; height: 420px; left: -140px; bottom: -160px; } .hero .b2 { width: 150px; height: 150px; left: 44%; top: 40px; border: 3px solid rgba(255, 106, 77, .45); background: transparent; } .hero .b3 { width: 90px; height: 90px; right: 8%; bottom: 60px; background: rgba(255, 200, 61, .2); }
.hero-in { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 40px; align-items: center; padding-block: 64px 84px; }
.hero .eyebrow { color: var(--sun); margin-bottom: 20px; }
.hero h1 { font-size: clamp(44px, 6.2vw, 84px); letter-spacing: -.04em; line-height: 1.02; } .hero h1 em { font-style: normal; color: var(--accent); }
.hero .lead { margin-top: 22px; max-width: 520px; font-size: 18px; color: #C9E1EA; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero-pills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 30px; } .hero-pills a { padding: 8px 16px; border-radius: 999px; border: 1px solid var(--line-d); font-size: 14px; font-weight: 600; color: #E2F0F4; transition: all .15s; } .hero-pills a:hover { background: var(--sun); border-color: var(--sun); color: var(--ink); }
.collage { position: relative; aspect-ratio: 1 / 1; max-width: 560px; margin-left: auto; width: 100%; }
.collage .c { position: absolute; border-radius: 50%; overflow: hidden; border: 8px solid var(--ink); box-shadow: 0 20px 50px rgba(0, 0, 0, .35); } .collage .c img { width: 100%; height: 100%; object-fit: cover; }
.collage .c1 { width: 72%; height: 72%; right: 0; top: 4%; border-color: var(--accent); } .collage .c2 { width: 38%; height: 38%; left: 0; top: 0; border-color: var(--sun); } .collage .c3 { width: 42%; height: 42%; left: 6%; bottom: 0; border-color: var(--aqua); }
.collage .tag { position: absolute; right: 2%; bottom: 8%; background: #fff; color: var(--ink); border-radius: 18px; padding: 12px 18px; box-shadow: var(--shadow-lg); font-size: 13px; transform: rotate(3deg); } .collage .tag b { display: block; font: 700 16px var(--font-display); } .collage .tag span { color: var(--teal); font-weight: 700; }
.strip { background: var(--accent); color: var(--ink); overflow: hidden; border-block: 3px solid var(--ink); margin-top: 28px; transform: rotate(-1deg); }
.strip-run { display: flex; width: max-content; gap: 36px; padding: 14px 0; animation: run 40s linear infinite; font: 700 18px var(--font-display); white-space: nowrap; } .strip-run span::after { content: '✦'; margin-left: 36px; opacity: .6; }
@keyframes run { to { transform: translateX(-50%); } }
.hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line-d); } .hero-stats div { padding: 22px 28px; border-left: 1px solid var(--line-d); } .hero-stats div:first-child { border-left: 0; }
.hero-stats b { display: block; font: 700 30px var(--font-display); color: var(--sun); } .hero-stats span { font-size: 14px; color: #B4D3DE; }
/* sections */
.section { padding: 76px 0; }
.section-dark { background: var(--ink); color: #fff; border-radius: var(--r-xl); margin-inline: 12px; }
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 36px; }
.sec-title { font-size: clamp(30px, 4.2vw, 52px); margin-top: 14px; max-width: 760px; }
.sec-sub { margin-top: 14px; max-width: 620px; color: var(--muted); font-size: 17px; } .section-dark .sec-sub { color: #B9D2CA; }
.section-dark .eyebrow { color: var(--accent); }
.link-more { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; border-bottom: 2px solid var(--ink); padding-bottom: 2px; white-space: nowrap; } .link-more:hover { color: var(--teal); border-color: var(--teal); }
.section-dark .link-more { border-color: var(--accent); color: var(--accent); }

/* thẻ danh mục màu */
.cats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.cat { display: flex; flex-direction: column; justify-content: space-between; gap: 22px; padding: 26px 26px 22px; border-radius: var(--r-lg); color: var(--ink); transition: transform .25s; overflow: hidden; }
.cat:hover { transform: translateY(-6px) rotate(-.6deg); }
.cat-coral { background: var(--accent); } .cat-sun { background: var(--sun); } .cat-violet { background: var(--violet); color: #fff; } .cat-aqua { background: var(--aqua); }
.cat .num { font: 700 13px var(--font-sans); letter-spacing: .1em; text-transform: uppercase; opacity: .75; }
.cat h3 { margin-top: 6px; font-size: 32px; } .cat p { margin-top: 10px; font-size: 15px; opacity: .88; }
.cat .ball { width: 78%; aspect-ratio: 1; border-radius: 50%; overflow: hidden; border: 6px solid #fff; align-self: center; box-shadow: 0 14px 30px rgba(6, 32, 58, .25); } .cat .ball img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; } .cat:hover .ball img { transform: scale(1.08); }
.cat .go { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; }
/* sản phẩm */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { height: 42px; padding: 0 18px; border-radius: 999px; border: 1.5px solid var(--line); background: var(--paper); color: var(--ink); font: 600 14.5px var(--font-sans); transition: all .15s; }
.chip:hover { border-color: var(--ink); } .chip.on { background: var(--ink); border-color: var(--ink); color: #fff; }
.pgrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.pgrid.cols-3 { grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pcard { display: flex; flex-direction: column; background: var(--paper); border-radius: var(--r-md); overflow: hidden; border: 1px solid var(--line); transition: transform .2s, box-shadow .2s; }
.pcard:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.pcard.hide { display: none; }
.pimg { position: relative; aspect-ratio: 4 / 3; background: var(--foam-2); overflow: hidden; } .pimg img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; } .pcard:hover .pimg img { transform: scale(1.06); }
.pbadge { position: absolute; left: 12px; top: 12px; padding: 5px 12px; border-radius: 999px; background: var(--sun); color: var(--ink); font: 700 12px var(--font-sans); }
.pbody { display: flex; flex-direction: column; flex: 1; padding: 18px 18px 20px; }
.pcat { font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--teal); }
.pbody h3 { margin-top: 8px; font: 700 17px/1.3 var(--font-sans); letter-spacing: 0; }
.pspec { margin: 12px 0 0; display: flex; flex-wrap: wrap; gap: 6px; } .pspec li { padding: 4px 10px; border-radius: 999px; background: var(--foam); font-size: 12.5px; color: var(--muted); }
.pfoot { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: auto; padding-top: 18px; }
.price { font: 800 20px var(--font-display); letter-spacing: -.01em; } .price small { display: block; font: 500 12px var(--font-sans); color: var(--muted); letter-spacing: 0; }
.pfoot .btn { height: 40px; padding: 0 16px; font-size: 14px; }
.sec-note { margin-top: 26px; color: var(--muted); font-size: 14px; }

/* combo */
.combos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.combo { display: flex; flex-direction: column; border-radius: var(--r-lg); background: #123F38; overflow: hidden; border: 1px solid var(--line-d); }
.combo-img { position: relative; aspect-ratio: 16 / 10; } .combo-img img { width: 100%; height: 100%; object-fit: cover; }
.combo-img span { position: absolute; left: 16px; top: 16px; padding: 6px 14px; border-radius: 999px; background: var(--accent); color: var(--ink); font: 700 13px var(--font-sans); }
.combo-body { display: flex; flex-direction: column; flex: 1; padding: 26px; }
.combo h3 { font-size: 26px; } .combo p { margin-top: 8px; color: #B9D2CA; font-size: 15px; }
.combo ul { margin: 18px 0 20px; display: grid; gap: 9px; } .combo li { display: flex; gap: 10px; font-size: 15px; color: #E3EFEA; } .combo li .ico { color: var(--accent); margin-top: 3px; }
.combo-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: auto; padding-top: 20px; border-top: 1px solid var(--line-d); }
.combo-foot small { display: block; color: #9FC0B6; font-size: 12.5px; } .combo-foot b { font: 800 24px var(--font-display); color: var(--accent); }

/* các bước nuôi cá */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: s; }
.step { position: relative; padding: 32px; border-radius: var(--r-lg); background: var(--paper); border: 1px solid var(--line); }
.step .n { display: grid; place-items: center; width: 54px; height: 54px; border-radius: 50%; background: var(--sun); font: 700 22px var(--font-display); }
.step:nth-child(2) .n { background: var(--aqua); } .step:nth-child(3) .n { background: var(--accent); }
.step h3 { margin-top: 22px; font-size: 23px; } .step p { margin-top: 10px; color: var(--muted); } .step a { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-weight: 700; color: var(--teal); }
.why { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.why-item { padding: 28px; border-radius: var(--r-lg); background: var(--paper); border: 1px solid var(--line); }
.why-item .ic { display: grid; place-items: center; width: 52px; height: 52px; border-radius: 16px; background: var(--foam-2); color: var(--teal); } .why-item .ic .ico { width: 24px; height: 24px; }
.why-item h3 { margin-top: 20px; font-size: 20px; } .why-item p { margin-top: 8px; color: var(--muted); font-size: 15px; }
/* tin tức trên trang chủ + trang tin */
.np-kick { display: inline-block; font: 700 12px var(--font-sans); letter-spacing: .08em; text-transform: uppercase; color: var(--teal); }
.np-time { display: block; margin-top: 8px; font-size: 13px; color: var(--muted); }
.np-hero { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 32px; align-items: stretch; }
.np-lead { position: relative; display: block; border-radius: var(--r-lg); overflow: hidden; color: #fff; background: var(--ink); min-height: 480px; isolation: isolate; }
.np-lead > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; transition: transform .6s; } .np-lead:hover > img { transform: scale(1.04); }
.np-lead::before { content: ''; position: absolute; inset: 0; background: rgba(4, 22, 19, .5); z-index: -1; }
.np-lead .in { position: absolute; left: 0; right: 0; bottom: 0; padding: 32px; } .np-lead .np-kick { color: var(--accent); }
.np-lead h2 { margin-top: 10px; font-size: clamp(26px, 3.2vw, 40px); line-height: 1.12; } .np-lead p { margin-top: 12px; max-width: 560px; color: #DCEBE5; } .np-lead .np-time { color: #B9D2CA; }
.np-latest { background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 8px 24px 12px; }
.np-latest > h4 { padding: 18px 0 12px; font: 800 14px var(--font-sans); letter-spacing: .1em; text-transform: uppercase; border-bottom: 2px solid var(--ink); }
.np-latest > h4 i { color: #E5484D; font-style: normal; }
.np-item { display: grid; grid-template-columns: minmax(0, 1fr) 104px; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--line); } .np-item:last-child { border-bottom: 0; }
.np-item h3 { margin-top: 6px; font: 700 16px/1.35 var(--font-sans); letter-spacing: 0; } .np-item:hover h3 { color: var(--teal); }
.np-item .th { border-radius: var(--r-sm); overflow: hidden; aspect-ratio: 1; } .np-item .th img, .np-card .th img, .li .th img, .np-card2 .th img { width: 100%; height: 100%; object-fit: cover; }
.np-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.np-card { display: block; } .np-card .th { aspect-ratio: 16 / 10; border-radius: var(--r-md); overflow: hidden; background: var(--foam-2); margin-bottom: 16px; } .np-card .th img { transition: transform .5s; } .np-card:hover .th img { transform: scale(1.05); }
.np-card h3 { margin-top: 8px; font: 700 19px/1.3 var(--font-display); letter-spacing: -.01em; } .np-card:hover h3 { color: var(--teal); } .np-card p { margin-top: 8px; color: var(--muted); font-size: 15px; }
.np-top { background: var(--ink); color: #CFE3DC; font-size: 13px; } .np-top .wrap { display: flex; align-items: center; gap: 16px; min-height: 42px; overflow: hidden; }
.np-top .flash { padding: 2px 10px; border-radius: 4px; background: #E5484D; color: #fff; font: 700 11px var(--font-sans); letter-spacing: .08em; }
.np-top .ticker { display: flex; gap: 36px; white-space: nowrap; overflow: hidden; } .np-top .ticker a { opacity: .9; } .np-top .ticker a:hover { color: var(--accent); }
.np-mast { text-align: center; padding: 44px 0 22px; } .np-mast h1 { font-size: clamp(40px, 6vw, 76px); letter-spacing: -.04em; } .np-mast h1 span { color: var(--teal); }
.np-mast p { margin-top: 10px; color: var(--muted); font-size: 15px; letter-spacing: .12em; text-transform: uppercase; }
.np-nav { position: sticky; top: var(--hd-h); z-index: 40; background: var(--foam); border-block: 2px solid var(--ink); } .np-nav .wrap { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.np-nav a { display: block; padding: 14px 18px; white-space: nowrap; font: 700 14px var(--font-sans); letter-spacing: .04em; text-transform: uppercase; border-bottom: 3px solid transparent; margin-bottom: -2px; } .np-nav a:hover, .np-nav a.on { border-color: var(--ink); }
.np-body { padding: 36px 0 20px; }
.np-sec-title { display: flex; align-items: center; gap: 14px; margin: 52px 0 24px; font-size: 28px; } .np-sec-title::after { content: ''; flex: 1; height: 2px; background: var(--ink); }
.np-split { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 40px; }
.li { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 22px; padding: 22px 0; border-bottom: 1px solid var(--line); } .li:first-of-type { padding-top: 0; }
.li .th { aspect-ratio: 4 / 3; border-radius: var(--r-md); overflow: hidden; } .li h3 { margin-top: 6px; font: 700 21px/1.3 var(--font-display); letter-spacing: -.01em; } .li:hover h3 { color: var(--teal); } .li p { margin-top: 8px; color: var(--muted); font-size: 15px; }
.np-side { align-self: start; position: sticky; top: 160px; } .np-box { background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 8px 24px 12px; }
.np-box h4 { padding: 18px 0 12px; font: 800 14px var(--font-sans); letter-spacing: .1em; text-transform: uppercase; border-bottom: 2px solid var(--ink); }
.np-rank { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 10px; padding: 14px 0; border-bottom: 1px solid var(--line); } .np-rank:last-child { border-bottom: 0; }
.np-rank b { font: 800 30px/1 var(--font-display); color: var(--accent-d); -webkit-text-stroke: 1px var(--ink); } .np-rank h3 { font: 600 15px/1.4 var(--font-sans); letter-spacing: 0; } .np-rank:hover h3 { color: var(--teal); }
.np-dark { background: var(--ink); color: #fff; border-radius: var(--r-xl); margin: 56px 12px 0; padding: 20px 0 56px; } .np-dark .np-sec-title::after { background: var(--line-d); }
.np-cats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.np-cat { position: relative; display: flex; align-items: flex-end; aspect-ratio: 4 / 5; padding: 20px; border-radius: var(--r-md); overflow: hidden; color: #fff; isolation: isolate; }
.np-cat img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; transition: transform .5s; } .np-cat:hover img { transform: scale(1.06); } .np-cat::before { content: ''; position: absolute; inset: 0; background: rgba(4, 22, 19, .42); z-index: -1; }
.np-cat b { font: 800 22px/1.15 var(--font-display); }
.np-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px 24px; padding: 40px 0 20px; }
.pager { display: flex; gap: 8px; margin-top: 30px; } .pager a { display: grid; place-items: center; min-width: 42px; height: 42px; padding: 0 14px; border-radius: 999px; border: 1.5px solid var(--line); background: var(--paper); font-weight: 700; } .pager a.is-current, .pager a:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.cat-hero { position: relative; color: #fff; padding: 72px 0 56px; background: var(--deep); isolation: isolate; overflow: hidden; border-radius: 0 0 var(--r-xl) var(--r-xl); padding-top: 72px; }
.cat-hero > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; } .cat-hero::before { content: ''; position: absolute; inset: 0; background: rgba(4, 22, 19, .6); z-index: -1; }
.cat-hero h1 { font-size: clamp(38px, 5.4vw, 70px); } .cat-hero p { margin-top: 14px; max-width: 620px; font-size: 18px; color: #DCEBE5; }

/* trang nhóm sản phẩm */
.ph-head { position: relative; padding: 56px 0 0; background: var(--ink); color: #fff; border-radius: 0 0 var(--r-xl) var(--r-xl); isolation: isolate; overflow: hidden; }
.ph-in { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 48px; align-items: center; padding-bottom: 56px; }
.ph-head h1 { font-size: clamp(44px, 6vw, 84px); letter-spacing: -.035em; } .ph-head h1 em { font-style: normal; color: var(--accent); }
.ph-head .lead { margin-top: 20px; max-width: 520px; color: #CFE3DC; font-size: 18px; }
.ph-img { border-radius: var(--r-lg); overflow: hidden; aspect-ratio: 5 / 4; } .ph-img img { width: 100%; height: 100%; object-fit: cover; }
.crumb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 22px; font-size: 14px; color: #B9D2CA; } .crumb a:hover { color: var(--accent); } .crumb .ico { width: 14px; height: 14px; }
.ph-stats { display: flex; gap: 36px; margin-top: 30px; } .ph-stats b { display: block; font: 800 30px var(--font-display); color: var(--accent); } .ph-stats span { font-size: 14px; color: #B9D2CA; }
.filter-bar { position: sticky; top: var(--hd-h); z-index: 30; padding: 14px 0; background: var(--foam); } .filter-bar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; } .filter-bar .count { color: var(--muted); font-size: 14px; }
.guide { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.g-item { padding: 26px; border-radius: var(--r-lg); background: var(--paper); border: 1px solid var(--line); } .g-item .n { font: 800 44px/1 var(--font-display); color: var(--accent-d); -webkit-text-stroke: 1.5px var(--ink); }
.g-item h3 { margin-top: 18px; font: 700 19px/1.3 var(--font-display); } .g-item p { margin-top: 10px; color: var(--muted); font-size: 15px; }
.tbl-wrap { overflow-x: auto; border-radius: var(--r-md); border: 1px solid var(--line); background: var(--paper); }
table { width: 100%; border-collapse: collapse; min-width: 640px; } th, td { padding: 16px 20px; text-align: left; border-bottom: 1px solid var(--line); font-size: 15px; } th { background: var(--ink); color: #fff; font: 700 13px var(--font-sans); letter-spacing: .06em; text-transform: uppercase; } tr:last-child td { border-bottom: 0; } td:first-child { font-weight: 700; }
.faq { display: grid; gap: 12px; max-width: 860px; } .faq details { background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-md); } .faq summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 24px; cursor: pointer; font: 700 17px var(--font-sans); list-style: none; } .faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--foam); font-size: 20px; transition: transform .2s; } .faq details[open] summary::after { content: '–'; background: var(--accent); }
.faq details p { padding: 0 24px 22px; color: var(--muted); }
.cta { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding: 56px; border-radius: var(--r-xl); background: var(--accent); color: var(--ink); }
.cta h2 { font-size: clamp(30px, 4vw, 50px); max-width: 640px; } .cta p { margin-top: 12px; max-width: 560px; font-size: 17px; color: #243B34; }
.split-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }

/* bài viết */
.art-head { max-width: 860px; margin: 0 auto; padding: 56px var(--gutter) 28px; text-align: left; } .art-head .crumb { color: var(--muted); } .art-head .crumb a:hover { color: var(--teal); }
.art-head h1 { margin-top: 14px; font-size: clamp(34px, 5vw, 60px); letter-spacing: -.03em; line-height: 1.06; } .standfirst { margin-top: 20px; font-size: 21px; line-height: 1.5; color: #35504A; }
.author { display: flex; align-items: center; gap: 12px; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 14px; color: var(--muted); } .author .av { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 50%; background: var(--ink); color: var(--accent); } .author b { display: block; color: var(--ink); }
.fig { max-width: 1080px; margin: 12px auto 0; padding-inline: var(--gutter); } .fig img { width: 100%; aspect-ratio: 16 / 8; object-fit: cover; border-radius: var(--r-lg); } .fig figcaption { margin-top: 10px; font-size: 13px; color: var(--muted); }
.art-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 56px; max-width: 1080px; margin: 36px auto 0; padding-inline: var(--gutter); }
.rich { font-size: 18px; line-height: 1.8; color: #1B2F2B; } .rich h2 { margin: 42px 0 14px; font-size: 30px; line-height: 1.15; } .rich p { margin-top: 18px; } .rich p:first-child { margin-top: 0; font-size: 20px; }
.rich ul, .rich ol { margin: 18px 0; padding-left: 0; display: grid; gap: 10px; } .rich ul li { position: relative; padding-left: 28px; } .rich ul li::before { content: ''; position: absolute; left: 4px; top: .7em; width: 10px; height: 10px; border-radius: 50%; background: var(--accent-d); border: 2px solid var(--ink); }
.rich a { color: var(--teal); text-decoration: underline; } .rich img { border-radius: var(--r-md); margin: 24px 0; }
.aside-box { position: sticky; top: 130px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 24px; } .aside-box h4 { font: 800 14px var(--font-sans); letter-spacing: .1em; text-transform: uppercase; padding-bottom: 12px; border-bottom: 2px solid var(--ink); }
.top-list { counter-reset: n; margin-top: 4px; } .top-list li { counter-increment: n; display: grid; grid-template-columns: 26px 1fr; gap: 10px; padding: 14px 0; border-bottom: 1px solid var(--line); font: 600 15px/1.4 var(--font-sans); } .top-list li:last-child { border-bottom: 0; } .top-list li::before { content: counter(n); font: 800 20px/1 var(--font-display); color: var(--teal); } .top-list a:hover { color: var(--teal); }

/* liên hệ + trang thường */
.page-head { padding: 64px 0 36px; } .page-head h1 { margin-top: 14px; font-size: clamp(38px, 5.4vw, 68px); letter-spacing: -.035em; } .page-head p { margin-top: 14px; max-width: 620px; color: var(--muted); font-size: 18px; } .page-head .crumb { color: var(--muted); } .page-head .crumb a:hover { color: var(--teal); }
.ct-grid { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 28px; align-items: start; }
.ct-panel { padding: 38px; border-radius: var(--r-lg); background: var(--ink); color: #fff; } .ct-panel h2 { font-size: 32px; } .ct-panel > p { margin-top: 12px; color: #B9D2CA; }
.info-list { margin-top: 28px; display: grid; gap: 18px; } .info-list li { display: flex; gap: 14px; align-items: flex-start; } .info-list .ic { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 14px; background: var(--accent); color: var(--ink); flex-shrink: 0; }
.info-list small { display: block; color: #9FC0B6; font-size: 13px; } .info-list a { color: #fff; font-weight: 700; }
.ct-form { padding: 38px; border-radius: var(--r-lg); background: var(--paper); border: 1px solid var(--line); }
.form { display: grid; gap: 18px; } .form label { display: grid; gap: 8px; font: 600 14.5px var(--font-sans); } .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; } .req { color: #C73A3A; }
.form input, .form select, .form textarea { width: 100%; padding: 14px 16px; border-radius: var(--r-sm); border: 1.5px solid var(--line); background: var(--foam); font: 400 16px var(--font-sans); color: var(--ink); transition: border-color .15s, background .15s; }
.form input:focus, .form select:focus, .form textarea:focus { outline: 0; border-color: var(--ink); background: #fff; }
.notice { padding: 16px 20px; border-radius: var(--r-sm); font-size: 15px; } .notice-ok { background: #E4F6D5; color: #1B4E1A; } .notice-error { background: #FCE7E5; color: #7C1D17; } .notice ul { list-style: disc; padding-left: 18px; }
.narrow { max-width: 820px; margin-inline: auto; padding-inline: var(--gutter); } .center { text-align: center; } .big-404 { font: 800 clamp(90px, 18vw, 200px)/1 var(--font-display); color: var(--accent-d); -webkit-text-stroke: 3px var(--ink); } .empty { color: var(--muted); }

/* chân trang */
.ft { margin-top: 56px; padding: 72px 0 28px; background: var(--ink); color: #CFE3DC; border-radius: var(--r-xl) var(--r-xl) 0 0; }
.ft-top { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding-bottom: 48px; border-bottom: 1px solid var(--line-d); } .ft-top h2 { font-size: clamp(30px, 4vw, 52px); color: #fff; max-width: 640px; } .ft-top h2 em { font-style: normal; color: var(--accent); }
.ft-in { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 40px; padding: 48px 0; } .ft h4 { font: 700 13px var(--font-sans); letter-spacing: .1em; text-transform: uppercase; color: var(--accent); margin-bottom: 16px; } .ft li { margin-bottom: 10px; } .ft a:hover { color: var(--accent); }
.ft .brand { color: #fff; } .ft .brand-mark { background: var(--accent); color: var(--ink); } .ft p { margin-top: 16px; font-size: 15px; max-width: 340px; }
.ft-bottom { padding-top: 24px; border-top: 1px solid var(--line-d); font-size: 13px; color: #8FB0A6; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* hiệu ứng xuất hiện */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s, transform .6s; } .js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } .tile img, .pimg img { transition: none; } }

/* responsive */
@media (max-width: 1500px) { .hd-tel span { display: none; } .hd-tel { padding: 0 10px; } }
@media (max-width: 1100px) {
  .hero-in { grid-template-columns: 1fr; padding-block: 48px 64px; } .collage { max-width: 420px; margin: 8px auto 0; }
  .pgrid, .pgrid.cols-3 { grid-template-columns: repeat(3, 1fr); } .why { grid-template-columns: repeat(2, 1fr); } .guide { grid-template-columns: repeat(2, 1fr); } .cats { grid-template-columns: repeat(2, 1fr); }
  .combos { grid-template-columns: 1fr; } .combo { flex-direction: row; } .combo-img { width: 42%; aspect-ratio: auto; } .np-hero, .np-split { grid-template-columns: 1fr; } .np-side { position: static; }
  .np-cats { grid-template-columns: repeat(2, 1fr); } .np-grid, .np-cards { grid-template-columns: repeat(2, 1fr); } .ph-in { grid-template-columns: 1fr; } .ph-img { display: none; }
  .art-grid { grid-template-columns: 1fr; } .aside-box { position: static; } .ft-in { grid-template-columns: 1fr 1fr; } .steps { grid-template-columns: 1fr; }
}
@media (max-width: 1260px) {
  .hd-in { gap: 12px; } .menu-btn { display: grid; } .hd-tel span { display: none; } .hd-tel { padding: 0 12px; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; align-items: stretch; gap: 0; height: auto; padding: 10px var(--gutter) 18px; background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: var(--shadow-lg); max-height: calc(100vh - 120px); overflow-y: auto; margin: 0; }
  .nav.open { display: flex; } .nav-item { display: block; } .nav-link { width: 100%; height: 52px; justify-content: flex-start; } .nav-link::after { display: none; } .nav-link .ico { margin-left: auto; }
  .mega, .nav-sub { position: static; opacity: 1; visibility: visible; transform: none; border: 0; box-shadow: none; width: auto; background: transparent; padding: 0 0 8px 24px; } .mega-in { display: block; padding: 0; max-width: none; } .mega-feat, .mega-subs h4, .mega-subs .mega-all { display: none; } .mega-subs a, .nav-sub a { padding: 9px 12px; font-weight: 500; }
}
@media (max-width: 960px) {
  .ct-grid, .split-2 { grid-template-columns: 1fr; } .cta { flex-direction: column; align-items: flex-start; padding: 36px 28px; } .ft-top { flex-direction: column; align-items: flex-start; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); } .hero-stats div:nth-child(3) { border-left: 0; } .hero-stats div:nth-child(n+3) { border-top: 1px solid var(--line-d); }
}
@media (max-width: 640px) {
  :root { --gutter: 16px; --hd-h: 64px; } .section { padding: 52px 0; } .topline .tl-l { display: none; } .topline .wrap { justify-content: center; } .topline a.hot { white-space: nowrap; }
  .hd-tel { display: none; } .hd-actions .btn { height: 42px; padding: 0 16px; } .menu-btn { width: 42px; height: 42px; } .brand { font-size: 20px; gap: 8px; } .brand-mark { width: 38px; height: 38px; }
  .sec-head { flex-direction: column; align-items: flex-start; } .pgrid, .pgrid.cols-3, .why, .guide, .np-cards, .np-grid { grid-template-columns: 1fr 1fr; gap: 12px; } .why, .guide { grid-template-columns: 1fr; }
  .pbody { padding: 12px 12px 14px; } .pbody h3 { font-size: 15px; } .pspec { display: none; } .price { font-size: 17px; } .pfoot { flex-direction: column; align-items: stretch; } .pfoot .btn { width: 100%; }
  .np-grid, .np-cards { grid-template-columns: 1fr; } .li { grid-template-columns: 110px 1fr; gap: 14px; } .li p { display: none; } .li h3 { font-size: 17px; } .np-lead { min-height: 400px; } .np-lead .in { padding: 22px; } .np-cats { grid-template-columns: 1fr 1fr; }
  .combo { flex-direction: column; } .combo-img { width: 100%; aspect-ratio: 16 / 10; } .form-row { grid-template-columns: 1fr; } .ct-panel, .ct-form { padding: 26px 20px; } .ft-in { grid-template-columns: 1fr; }
  .cats { grid-template-columns: 1fr 1fr; gap: 12px; } .cat { padding: 18px 16px; } .cat h3 { font-size: 22px; } .cat p { display: none; } .cat .ball { width: 90%; border-width: 4px; } .ph-stats { gap: 22px; } .rich { font-size: 17px; }
  .hero .b2, .hero .b3 { display: none; } .collage .c { border-width: 5px; } .hero-pills { display: none; } .hero-stats b { font-size: 24px; } .hero-stats div { padding: 16px 18px; }
}