/*
Theme Name: Khăn Giấy Lau Tay
Theme URI: https://khangiaylautay.com/
Author: Roto Pusi Việt Nam
Description: Theme viết tay cho KhanGiayLauTay.com — catalog sản phẩm + nhận báo giá sỉ, tin tức. Phong cách sáng, nền xanh nhạt, thẻ trắng bo góc. Không page builder, không jQuery.
Version: 1.0.1
Requires at least: 6.5
Tested up to: 6.9
Requires PHP: 7.4
License: GPLv2 or later
Text Domain: khangiay
*/

/* ==========================================================================
   1. Tokens — đổi giao diện chủ yếu ở đây
   ========================================================================== */
:root {
	--c-primary: #0b4f9c;
	--c-primary-dark: #083b75;
	--c-primary-2: #1e73be;
	--c-accent: #f8b822;
	--c-sky: #cfe8ff;
	--c-sky-2: #e6f3ff;
	--c-mist: #ebf1f8;
	--c-bg: #ffffff;
	--c-bg-alt: #f5f8fc;
	--c-dark: #0f2b4c;
	--c-dark-2: #0a2140;
	--c-heading: #1a2a3f;
	--c-text: #4a5666;
	--c-muted: #6b7686;
	--c-border: #dbe4ef;
	--c-zalo: #0068ff;

	--f-body: "Montserrat", system-ui, -apple-system, "Segoe UI", sans-serif;
	--f-heading: "Montserrat Alternates", "Montserrat", system-ui, sans-serif;

	--fs-sm: 0.875rem;
	--fs-base: 0.9688rem;
	--fs-lg: 1.0625rem;
	--fs-h3: clamp(1.125rem, 1.02rem + 0.45vw, 1.375rem);
	--fs-h2: clamp(1.5rem, 1.1rem + 1.7vw, 2.5rem);
	--fs-h1: clamp(1.75rem, 1.2rem + 2.6vw, 3.25rem);

	--radius: 15px;
	--radius-sm: 10px;
	--radius-pill: 999px;
	--shadow: 0 9px 10px rgba(15, 43, 76, 0.08);
	--shadow-lg: 0 18px 40px rgba(15, 43, 76, 0.12);

	--space-section: clamp(3.5rem, 2.4rem + 4.4vw, 6.5rem);
	--container: 1240px;
	--gutter: 16px;
	--header-h: 76px;
}

/* ==========================================================================
   2. Base
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 24px); -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--f-body); font-size: var(--fs-base); line-height: 1.7; color: var(--c-text); background: var(--c-bg); overflow-x: hidden; }
img, picture, video, svg { display: block; max-width: 100%; height: auto; }
a { color: var(--c-primary); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--c-primary-dark); }
h1, h2, h3, h4 { font-family: var(--f-heading); font-weight: 600; line-height: 1.25; margin: 0 0 0.6em; color: var(--c-heading); }
h1 { font-size: var(--fs-h1); text-wrap: balance; }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
p { margin: 0 0 1em; }
ul, ol { padding-left: 1.2em; }
input, select, textarea, button { font: inherit; }
:focus-visible { outline: 3px solid var(--c-accent); outline-offset: 2px; }
.icon { width: 1.25em; height: 1.25em; flex: none; }
.screen-reader-text { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(1px, 1px, 1px, 1px); white-space: nowrap; }
.skip-link:focus { position: fixed; top: 8px; left: 8px; z-index: 1000; width: auto; height: auto; clip: auto; padding: 8px 16px; background: #fff; }

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--space-section); }
.section--tight { padding-block: clamp(2.5rem, 2rem + 2vw, 4rem); }
.section--alt { background: var(--c-bg-alt); }
.section__head { max-width: 760px; margin: 0 auto 2.5rem; text-align: center; }
.section__head--left { margin-left: 0; text-align: left; }
.section__eyebrow { display: inline-block; margin-bottom: 0.4rem; font-family: var(--f-heading); font-size: var(--fs-sm); font-weight: 600; letter-spacing: 0.06em; color: var(--c-primary-2); }
.section__title { margin-bottom: 0.35em; font-weight: 500; color: var(--c-primary); text-transform: uppercase; letter-spacing: 0.01em; }
.section__title--sm { font-size: clamp(1.2rem, 1rem + 0.8vw, 1.6rem); margin: 0; }
.section__lead { margin: 1rem 0 0; color: var(--c-muted); font-size: var(--fs-lg); }
.section__more { margin: 2.5rem 0 0; text-align: center; }
.ornament { display: inline-block; color: var(--c-accent); }
.section__head--left .ornament svg { margin-left: 0; }
.section__head .ornament svg { margin-inline: auto; }
.link-more { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; text-decoration: none; }
.link-more .icon { transition: transform 0.2s; }
.link-more:hover .icon { transform: translateX(4px); }
.check-list { margin: 1.5rem 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.check-list li { display: flex; gap: 10px; align-items: flex-start; color: var(--c-heading); font-weight: 500; }
.check-list .icon { margin-top: 3px; padding: 3px; width: 22px; height: 22px; border-radius: 50%; background: var(--c-primary); color: #fff; stroke-width: 3; }

/* ==========================================================================
   3. Nút
   ========================================================================== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 11px 24px; border: 2px solid transparent; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.95rem; line-height: 1.3; text-decoration: none; cursor: pointer; transition: background 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s; }
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--c-primary); color: #fff; box-shadow: 0 8px 18px rgba(11, 79, 156, 0.25); }
.btn--primary:hover { background: var(--c-primary-dark); color: #fff; }
.btn--light { background: #fff; color: var(--c-primary); box-shadow: var(--shadow); }
.btn--light:hover { color: var(--c-primary-dark); }
.btn--outline { border-color: var(--c-primary); color: var(--c-primary); background: transparent; }
.btn--outline:hover { background: var(--c-primary); color: #fff; }
.btn--ghost { border-color: currentColor; color: inherit; background: transparent; }
.btn--zalo { background: var(--c-zalo); color: #fff; }
.btn--zalo:hover { color: #fff; filter: brightness(1.08); }
.btn--block { width: 100%; }
.btn-group { display: flex; flex-wrap: wrap; gap: 12px; }

/* ==========================================================================
   4. Header — thanh trắng bo góc nổi phía trên
   ========================================================================== */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 100; padding-top: 10px; transition: padding 0.2s; }
.site-header__bar { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: var(--header-h); padding: 8px 12px 8px 16px; background: #fff; border-radius: var(--radius); box-shadow: 0 6px 24px rgba(15, 43, 76, 0.08); }
.site-header.is-scrolled { padding-top: 0; }
.site-header.is-scrolled .site-header__bar { border-radius: 0 0 var(--radius) var(--radius); box-shadow: 0 8px 24px rgba(15, 43, 76, 0.12); }
.admin-bar .site-header { top: 46px; }
.site-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--c-primary); }
.site-logo img { width: 52px; height: auto; }
.site-logo__text { font-family: var(--f-heading); font-size: 1.05rem; line-height: 1.1; font-weight: 500; color: var(--c-primary-2); }
.site-logo__text strong { display: block; font-weight: 700; color: var(--c-primary); }
.nav-toggle { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border: 0; border-radius: var(--radius-sm); background: var(--c-sky-2); cursor: pointer; }
.nav-toggle__bar, .nav-toggle__bar::before, .nav-toggle__bar::after { display: block; width: 22px; height: 2px; background: var(--c-primary); position: relative; transition: transform 0.2s; }
.nav-toggle__bar::before, .nav-toggle__bar::after { content: ""; position: absolute; left: 0; }
.nav-toggle__bar::before { top: -7px; }
.nav-toggle__bar::after { top: 7px; }
.nav-open .nav-toggle__bar { background: transparent; }
.nav-open .nav-toggle__bar::before { transform: translateY(7px) rotate(45deg); }
.nav-open .nav-toggle__bar::after { transform: translateY(-7px) rotate(-45deg); }
.primary-nav { position: fixed; top: calc(var(--header-h) + 20px); left: var(--gutter); right: var(--gutter); max-height: calc(100vh - var(--header-h) - 40px); padding: 8px 20px 20px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-lg); overflow-y: auto; opacity: 0; visibility: hidden; transform: translateY(-8px); transition: 0.2s; }
.nav-open .primary-nav { opacity: 1; visibility: visible; transform: none; }
.primary-nav ul { list-style: none; margin: 0; padding: 0; }
.primary-nav a { display: block; padding: 12px 0; color: var(--c-heading); font-family: var(--f-heading); font-weight: 500; text-transform: uppercase; font-size: 0.92rem; text-decoration: none; border-bottom: 1px solid var(--c-border); }
.primary-nav .sub-menu a { padding-left: 16px; text-transform: none; font-family: var(--f-body); }
.primary-nav .current-menu-item > a, .primary-nav .current-menu-ancestor > a, .primary-nav a:hover { color: var(--c-primary); }
.primary-nav__contact { padding-top: 16px; }
.primary-nav__contact .btn { width: 100%; }
.header-cta { display: none; }

/* ==========================================================================
   5. Hero trang chủ — nền xanh nhạt, vòng tròn đồng tâm, sản phẩm bay
   ========================================================================== */
.hero { position: relative; overflow: hidden; padding: calc(var(--header-h) + 48px) 0 96px; background: radial-gradient(ellipse at 70% 45%, var(--c-sky-2) 0%, var(--c-sky) 70%); }
.hero__rings { position: absolute; top: 50%; left: 50%; width: 0; height: 0; pointer-events: none; }
.hero__rings span { position: absolute; top: 50%; left: 50%; border-radius: 50%; background: rgba(255, 255, 255, 0.28); transform: translate(-50%, -50%); }
.hero__rings span:nth-child(1) { width: 1100px; height: 1100px; }
.hero__rings span:nth-child(2) { width: 780px; height: 780px; background: rgba(255, 255, 255, 0.3); }
.hero__rings span:nth-child(3) { width: 480px; height: 480px; background: rgba(180, 220, 255, 0.55); }
.hero__inner { position: relative; display: grid; gap: 24px; align-items: center; }
.hero__text { position: relative; z-index: 2; text-align: center; }
.hero__eyebrow { display: inline-block; margin-bottom: 1rem; padding: 6px 16px; border-radius: var(--radius-pill); background: rgba(255, 255, 255, 0.8); color: var(--c-primary); font-family: var(--f-heading); font-weight: 600; font-size: var(--fs-sm); letter-spacing: 0.04em; }
.hero h1 { color: var(--c-primary); font-weight: 600; margin-bottom: 0.5em; }
.hero__lead { max-width: 560px; margin-inline: auto; color: var(--c-heading); font-size: var(--fs-lg); }
.hero .btn-group { justify-content: center; margin-top: 1.75rem; }
.hero__chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 18px; margin: 1.5rem 0 0; padding: 0; list-style: none; font-size: var(--fs-sm); font-weight: 600; color: var(--c-heading); }
.hero__chips li { display: inline-flex; align-items: center; gap: 6px; }
.hero__chips .icon { color: var(--c-primary-2); stroke-width: 3; width: 1em; height: 1em; }
.hero__stage { position: relative; width: min(100%, 520px); aspect-ratio: 1; margin-inline: auto; }
.hero__word { position: absolute; inset: 0; display: grid; place-items: center; font-family: "Montserrat", sans-serif; font-weight: 800; font-size: clamp(5rem, 22vw, 11rem); letter-spacing: 0.02em; color: #fff; line-height: 1; user-select: none; }
.hero__center { position: absolute; top: 12%; left: 12%; width: 76%; height: auto; filter: drop-shadow(0 24px 30px rgba(11, 79, 156, 0.25)); animation: kgl-float 6s ease-in-out infinite; }
.hero__float { position: absolute; width: 30%; height: auto; filter: drop-shadow(0 14px 18px rgba(11, 79, 156, 0.2)); animation: kgl-float 7s ease-in-out infinite; }
.hero__float--tl { top: -2%; left: -4%; animation-delay: -1s; }
.hero__float--tr { top: 0; right: -6%; width: 24%; animation-delay: -3s; }
.hero__float--bl { bottom: 0; left: -6%; animation-delay: -2s; }
.hero__float--br { bottom: -2%; right: -4%; width: 26%; animation-delay: -4s; }
.hero__wave { position: absolute; left: 0; right: 0; bottom: -1px; width: 100%; height: 60px; }
@keyframes kgl-float { 0%, 100% { transform: translateY(0) rotate(0); } 50% { transform: translateY(-14px) rotate(-2deg); } }

/* Đầu trang con */
.page-hero { position: relative; overflow: hidden; padding: calc(var(--header-h) + 48px) 0 72px; background: linear-gradient(180deg, var(--c-sky) 0%, var(--c-sky-2) 100%); text-align: center; }
.page-hero .hero__rings { top: 40%; }
.page-hero .hero__rings span:nth-child(1) { width: 900px; height: 900px; }
.page-hero .hero__rings span:nth-child(2) { width: 560px; height: 560px; }
.page-hero__inner { position: relative; z-index: 1; max-width: 920px; }
.page-hero h1 { margin: 0.35em 0 0.3em; color: var(--c-primary); }
.page-hero__lead { max-width: 720px; margin: 0 auto; color: var(--c-heading); font-size: var(--fs-lg); }
.page-hero__meta { margin: 0; color: var(--c-muted); font-size: var(--fs-sm); }
.page-hero .hero__wave { height: 40px; }
.breadcrumb { font-size: var(--fs-sm); color: var(--c-muted); }
.breadcrumb ol { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px; margin: 0; padding: 0; list-style: none; }
.breadcrumb li + li::before { content: "›"; margin-right: 4px; color: var(--c-primary-2); }
.breadcrumb a { color: var(--c-primary-2); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

/* ==========================================================================
   6. Về chúng tôi + Tầm nhìn
   ========================================================================== */
.about__grid { display: grid; gap: 40px; align-items: center; }
.about__media { position: relative; }
.about__media img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.about__badge { position: absolute; right: -8px; bottom: -18px; display: grid; place-items: center; width: 116px; height: 116px; border-radius: 50%; background: var(--c-accent); color: var(--c-dark); text-align: center; line-height: 1.1; box-shadow: var(--shadow-lg); }
.about__badge small { display: block; font-size: 0.75rem; font-weight: 600; }
.about__badge strong { display: block; font-family: var(--f-heading); font-size: 1.6rem; }
.about__logo { width: 84px; height: auto; margin-bottom: 0.5rem; }
.about__text p, .vision__item p, .quote__intro p { text-align: justify; text-align-last: left; }
.about__grid--page { align-items: start; }
.vision__grid { display: grid; gap: 40px; align-items: center; }
.vision__list { margin: 0; padding: 0; list-style: none; display: grid; gap: 28px; }
.vision__item { display: grid; grid-template-columns: 56px 1fr; gap: 18px; }
.vision__icon { display: grid; place-items: center; width: 56px; height: 56px; border-radius: 50%; background: var(--c-sky-2); color: var(--c-primary); border: 2px dashed var(--c-accent); }
.vision__icon .icon { width: 26px; height: 26px; }
.vision__item h3 { margin-bottom: 0.3em; color: var(--c-primary); text-transform: uppercase; font-size: 1.1rem; }
.vision__item p { margin: 0; }
.vision__media img { width: 100%; border-radius: 50%; aspect-ratio: 1; object-fit: cover; box-shadow: 0 0 0 14px var(--c-sky-2), var(--shadow-lg); }

/* ==========================================================================
   7. Sản phẩm nổi bật (nền xám xanh, thẻ so le) + danh mục + lưới sản phẩm
   ========================================================================== */
.featured { background: var(--c-mist); }
.featured__row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 0; padding: 0; list-style: none; }
.featured__card { display: flex; flex-direction: column; align-items: center; height: 100%; padding: 14px 14px 18px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); text-decoration: none; text-align: center; transition: transform 0.25s, box-shadow 0.25s; }
.featured__card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.featured__img { display: block; width: 100%; aspect-ratio: 1; border-radius: var(--radius-sm); overflow: hidden; background: #fff; }
.featured__img img { width: 100%; height: 100%; object-fit: contain; }
.featured__name { margin-top: 12px; font-family: var(--f-heading); font-weight: 600; font-size: 0.86rem; line-height: 1.35; color: var(--c-heading); text-transform: uppercase; }

.brand-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 0; padding: 0; list-style: none; }
.brand-card { display: flex; flex-direction: column; height: 100%; overflow: hidden; background: linear-gradient(180deg, var(--c-sky-2), #fff 70%); border: 1px solid var(--c-border); border-radius: var(--radius); text-decoration: none; transition: transform 0.25s, box-shadow 0.25s; }
.brand-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.brand-card__img { display: block; padding: 12px 18px 0; }
.brand-card__img img { width: 100%; aspect-ratio: 1; object-fit: contain; transition: transform 0.3s; }
.brand-card:hover .brand-card__img img { transform: scale(1.05); }
.brand-card__body { display: flex; flex-direction: column; gap: 4px; flex: 1; padding: 12px 16px 16px; }
.brand-card__name { font-family: var(--f-heading); font-weight: 600; color: var(--c-primary); font-size: 1rem; line-height: 1.3; }
.brand-card__text { color: var(--c-muted); font-size: var(--fs-sm); line-height: 1.5; }
.brand-card__count { display: inline-flex; align-items: center; gap: 6px; margin-top: auto; padding-top: 8px; font-weight: 600; font-size: var(--fs-sm); color: var(--c-primary-2); }

.product-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 2.5rem 0 0; padding: 0; list-style: none; }
.cat-block__head + .product-grid, .cat-tabs + .product-grid { margin-top: 1.5rem; }
.product-card { display: flex; flex-direction: column; height: 100%; background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); overflow: hidden; transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s; }
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.product-card__img { display: block; aspect-ratio: 1; background: #fff; }
.product-card__img img { width: 100%; height: 100%; object-fit: contain; padding: 8px; }
.product-card__body { display: flex; flex-direction: column; gap: 4px; flex: 1; padding: 12px 14px 14px; border-top: 1px solid var(--c-border); }
.product-card__cat { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; color: var(--c-primary-2); }
.product-card__title { margin: 0; font-family: var(--f-body); font-size: 0.92rem; font-weight: 600; line-height: 1.4; }
.product-card__title a { color: var(--c-heading); text-decoration: none; }
.product-card__title a:hover { color: var(--c-primary); }
.product-card__sku { font-size: 0.8rem; color: var(--c-muted); }
.product-card__quote { margin-top: auto; padding-top: 10px; font-size: var(--fs-sm); font-weight: 600; text-decoration: none; }
.product-card__quote::after { content: " →"; }
.cat-tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.cat-tabs a { padding: 8px 18px; border: 1px solid var(--c-border); border-radius: var(--radius-pill); color: var(--c-heading); font-weight: 600; font-size: var(--fs-sm); text-decoration: none; background: #fff; }
.cat-tabs a:hover, .cat-tabs a.is-active { background: var(--c-primary); border-color: var(--c-primary); color: #fff; }
.cat-block__head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 16px; padding-bottom: 12px; border-bottom: 2px solid var(--c-mist); }

/* ==========================================================================
   8. Giải pháp, báo giá, đối tác, tin tức, FAQ
   ========================================================================== */
.solutions { background: linear-gradient(180deg, #fff 0%, var(--c-sky-2) 100%); }
.solutions__grid { display: grid; gap: 16px; margin: 0; padding: 0; list-style: none; }
.solution { padding: 24px 20px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); text-align: center; }
.solution__icon { display: grid; place-items: center; width: 64px; height: 64px; margin: 0 auto 14px; border-radius: 50%; background: var(--c-primary); color: #fff; box-shadow: 0 0 0 8px var(--c-sky-2); }
.solution__icon .icon { width: 28px; height: 28px; }
.solution h3 { font-size: 1.05rem; color: var(--c-primary); }
.solution p { margin: 0; font-size: var(--fs-sm); }

.quote__grid { display: grid; gap: 32px; align-items: start; }
.quote__intro .section__head { margin-bottom: 1rem; }
.quote__call { font-weight: 600; color: var(--c-heading); }
.quote__form { padding: 24px 20px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-lg); border-top: 4px solid var(--c-primary); }
.quote__form-title { margin: 0 0 1rem; text-align: center; color: var(--c-primary); font-weight: 500; font-size: clamp(1.4rem, 1.2rem + 1vw, 1.9rem); }
.quote__form .form { padding: 0; box-shadow: none; }

.logo-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 0; padding: 0; list-style: none; }
.logo-grid__item { display: grid; place-items: center; min-height: 110px; padding: 14px; background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); transition: box-shadow 0.25s, transform 0.25s; }
.logo-grid__item:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.logo-grid__item img { max-height: 84px; width: auto; filter: grayscale(0.15); }
.logo-grid__item span { font-weight: 600; color: var(--c-heading); text-align: center; }

.post-grid { display: grid; gap: 20px; grid-template-columns: 1fr; }
.post-card { display: flex; flex-direction: column; height: 100%; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform 0.25s, box-shadow 0.25s; }
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.post-card__img { position: relative; display: block; aspect-ratio: 4 / 3; background: var(--c-mist); overflow: hidden; }
.post-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
.post-card:hover .post-card__img img { transform: scale(1.05); }
.post-card__date { position: absolute; top: 12px; left: 12px; display: grid; place-items: center; width: 52px; padding: 6px 0; border-radius: var(--radius-sm); background: #fff; color: var(--c-muted); font-size: 0.72rem; line-height: 1.1; text-align: center; box-shadow: var(--shadow); }
.post-card__date strong { font-family: var(--f-heading); font-size: 1.15rem; color: var(--c-primary); }
.post-card__body { padding: 16px 18px 20px; }
.post-card__title { margin-bottom: 0.4em; font-family: var(--f-body); font-size: 1rem; font-weight: 700; line-height: 1.4; }
.post-card__title a { color: var(--c-heading); text-decoration: none; }
.post-card__title a:hover { color: var(--c-primary); }
.post-card__text { margin: 0; font-size: var(--fs-sm); color: var(--c-muted); }

.faq { max-width: 860px; margin-inline: auto; display: grid; gap: 12px; }
.faq__item { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-sm); overflow: hidden; }
.faq__h { margin: 0; font-size: inherit; }
.faq__q { display: flex; justify-content: space-between; align-items: center; gap: 16px; width: 100%; padding: 16px 20px; border: 0; background: none; text-align: left; font-family: var(--f-body); font-weight: 600; font-size: 1rem; color: var(--c-heading); cursor: pointer; }
.faq__q::after { content: "+"; display: grid; place-items: center; flex: none; width: 30px; height: 30px; border-radius: 50%; background: var(--c-sky-2); font-size: 1.3rem; line-height: 1; color: var(--c-primary); transition: transform 0.2s; }
.faq__q[aria-expanded="true"] { color: var(--c-primary); }
.faq__q[aria-expanded="true"]::after { transform: rotate(45deg); background: var(--c-primary); color: #fff; }
.faq__a { padding: 0 20px 16px; color: var(--c-text); }
.faq__a p { margin: 0; text-align: justify; text-align-last: left; }
.faq__a[hidden] { display: none; }

/* ==========================================================================
   9. Form
   ========================================================================== */
.form { display: grid; gap: 14px; color: var(--c-text); }
.form__row { display: grid; gap: 14px; }
.form label { display: block; margin-bottom: 4px; font-weight: 600; font-size: var(--fs-sm); color: var(--c-heading); }
.form input, .form select, .form textarea { width: 100%; min-height: 48px; padding: 10px 14px; border: 1px solid var(--c-border); border-radius: var(--radius-sm); background: var(--c-bg-alt); color: var(--c-heading); }
.form textarea { min-height: 100px; resize: vertical; }
.form input:focus, .form select:focus, .form textarea:focus { border-color: var(--c-primary); background: #fff; outline: none; box-shadow: 0 0 0 3px rgba(11, 79, 156, 0.12); }
.form__hp { position: absolute; left: -9999px; }
.form__note { margin: 0; font-size: 0.8rem; color: var(--c-muted); text-align: center; }
.notice { padding: 14px 18px; border-radius: var(--radius-sm); }
.notice--ok { background: #e8f6ec; color: #1d6b35; }
.notice--err { background: #fdecec; color: #9b1c1c; }

/* ==========================================================================
   10. Nội dung bài, sidebar, trang sản phẩm
   ========================================================================== */
.entry { max-width: 820px; margin-inline: auto; color: var(--c-text); }
.entry--wide { max-width: none; margin: 0; }
.entry > :first-child { margin-top: 0; }
/* Canh đều đoạn văn dài; dòng cuối canh trái; ô bảng/chú thích ảnh giữ canh trái. */
.entry p, .entry li { text-align: justify; text-align-last: left; }
.entry td p, .entry th p, .entry figcaption { text-align: left; }
.entry img { border-radius: var(--radius-sm); margin-inline: auto; }
.entry figure { margin: 1.5em 0; }
.entry figcaption { margin-top: 6px; font-size: var(--fs-sm); color: var(--c-muted); text-align: center; }
.entry h2 { margin-top: 1.6em; font-size: clamp(1.3rem, 1.1rem + 0.9vw, 1.7rem); color: var(--c-primary); }
.entry h3 { margin-top: 1.4em; font-size: clamp(1.1rem, 1rem + 0.5vw, 1.3rem); }
.entry h2, .entry h3, .entry h4 { font-family: var(--f-heading); }
.entry a { font-weight: 500; }
.entry blockquote { margin: 1.5em 0; padding: 14px 20px; border-left: 4px solid var(--c-accent); background: var(--c-bg-alt); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.entry table { width: 100%; border-collapse: collapse; margin: 1.5em 0; font-size: var(--fs-sm); display: block; overflow-x: auto; }
.entry th, .entry td { padding: 10px 12px; border: 1px solid var(--c-border); text-align: left; }
.entry th { background: var(--c-mist); color: var(--c-heading); }
.entry iframe { max-width: 100%; border-radius: var(--radius-sm); }
.entry__cover { margin: 0 0 1.75em; }
.entry__cover img { width: 100%; border-radius: var(--radius); }
.entry__tags { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: 2em; font-size: var(--fs-sm); color: var(--c-muted); }
.entry__tags span { padding: 3px 10px; border-radius: var(--radius-pill); background: var(--c-mist); }

.with-sidebar { display: grid; gap: 40px; }
.with-sidebar > .entry { max-width: none; margin: 0; }
.sidebar { align-self: stretch; }
.sidebar__sticky { display: grid; gap: 20px; }
.side-cta { padding: 20px; border-radius: var(--radius); background: linear-gradient(180deg, var(--c-sky) 0%, #fff 100%); text-align: center; display: grid; gap: 10px; }
.side-cta__img { width: 150px; margin: -6px auto 0; }
.side-cta__title { margin: 0; font-family: var(--f-heading); font-weight: 600; font-size: 1.15rem; color: var(--c-primary); }
.side-cta__text { margin: 0; font-size: var(--fs-sm); }
.side-box { padding: 18px 20px; border: 1px solid var(--c-border); border-radius: var(--radius); }
.side-box__title { margin: 0 0 8px; font-family: var(--f-heading); font-weight: 600; color: var(--c-primary); text-transform: uppercase; font-size: 0.95rem; }
.side-box__list { margin: 0; padding: 0; list-style: none; }
.side-box__list a { display: flex; justify-content: space-between; padding: 9px 0; border-bottom: 1px dashed var(--c-border); color: var(--c-heading); text-decoration: none; font-weight: 500; font-size: var(--fs-sm); }
.side-box__list li:last-child a { border-bottom: 0; }
.side-box__list a:hover { color: var(--c-primary); }
.side-box__list span { min-width: 28px; padding: 0 8px; border-radius: var(--radius-pill); background: var(--c-mist); text-align: center; font-size: 0.78rem; }

.product-top { padding: calc(var(--header-h) + 40px) 0 clamp(2.5rem, 2rem + 2vw, 4rem); background: linear-gradient(180deg, var(--c-sky-2) 0%, #fff 60%); }
.product-top .breadcrumb ol { justify-content: flex-start; }
.product-top__grid { display: grid; gap: 32px; margin-top: 20px; }
.product-gallery__main { aspect-ratio: 1; display: grid; place-items: center; padding: 12px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.product-gallery__main img { width: 100%; height: 100%; object-fit: contain; }
.product-gallery__thumbs { display: flex; flex-wrap: wrap; gap: 10px; margin: 14px 0 0; padding: 0; list-style: none; }
.product-gallery__thumbs button { width: 72px; height: 72px; padding: 4px; border: 2px solid var(--c-border); border-radius: var(--radius-sm); background: #fff; cursor: pointer; }
.product-gallery__thumbs button.is-active, .product-gallery__thumbs button:hover { border-color: var(--c-primary); }
.product-gallery__thumbs img { width: 100%; height: 100%; object-fit: contain; }
.product-summary h1 { margin: 0.2em 0 0.2em; color: var(--c-primary); font-size: clamp(1.5rem, 1.2rem + 1.4vw, 2.25rem); }
.product-summary__cat { display: inline-block; padding: 4px 12px; border-radius: var(--radius-pill); background: var(--c-mist); font-size: 0.78rem; font-weight: 600; text-decoration: none; text-transform: uppercase; letter-spacing: 0.04em; }
.product-summary__sku { margin: 0.75rem 0 0.25rem; }
.product-summary__price { margin: 0 0 1rem; font-size: 1.1rem; }
.product-summary__price strong { color: #d0302f; }
.product-summary__excerpt { margin-bottom: 1rem; font-size: var(--fs-sm); }
.product-summary__excerpt ul { margin: 0; padding-left: 1.1em; }
.spec-table { width: 100%; margin-bottom: 1.25rem; border-collapse: collapse; font-size: var(--fs-sm); }
.spec-table th, .spec-table td { padding: 8px 12px; border-bottom: 1px solid var(--c-border); text-align: left; vertical-align: top; }
.spec-table th { width: 40%; color: var(--c-heading); font-weight: 600; background: var(--c-bg-alt); }
.product-summary__actions { display: flex; flex-wrap: wrap; gap: 10px; }
.product-summary__trust { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin: 1.5rem 0 0; padding: 16px; list-style: none; border: 1px dashed var(--c-border); border-radius: var(--radius-sm); font-size: var(--fs-sm); font-weight: 600; color: var(--c-heading); }
.product-summary__trust li { display: flex; align-items: center; gap: 8px; }
.product-summary__trust .icon { color: var(--c-primary-2); }
.product-detail { padding: 24px 20px; border: 1px solid var(--c-border); border-radius: var(--radius); }
.product-detail__title { display: inline-block; margin-bottom: 1rem; padding-bottom: 8px; border-bottom: 3px solid var(--c-accent); color: var(--c-primary); font-weight: 500; text-transform: uppercase; font-size: clamp(1.2rem, 1rem + 0.8vw, 1.5rem); }
.cat-desc { padding: 24px 20px; background: var(--c-bg-alt); border-radius: var(--radius); }

.contact-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 0; padding: 0; list-style: none; }
.contact-card { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 22px 14px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); text-align: center; font-size: var(--fs-sm); }
.contact-card strong { color: var(--c-heading); }
.contact-card a { font-weight: 700; font-size: 1.05rem; text-decoration: none; }
.contact-card__icon { display: grid; place-items: center; width: 52px; height: 52px; margin-bottom: 6px; border-radius: 50%; background: var(--c-sky-2); color: var(--c-primary); }
.map { display: block; width: 100%; height: 340px; margin-top: 1.5rem; border: 0; border-radius: var(--radius); }

.pagination { margin-top: 2.5rem; }
.pagination .nav-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.pagination .page-numbers { display: grid; place-items: center; min-width: 42px; height: 42px; padding: 0 12px; border: 1px solid var(--c-border); border-radius: var(--radius-sm); text-decoration: none; color: var(--c-heading); font-weight: 600; }
.pagination .page-numbers:hover { border-color: var(--c-primary); color: var(--c-primary); }
.pagination .current { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }

/* ==========================================================================
   11. Cam kết + CTA + Footer
   ========================================================================== */
.cta-band { position: relative; overflow: hidden; padding-block: 56px; background: var(--c-primary); color: #fff; text-align: center; }
.cta-band::before { content: ""; position: absolute; top: -160px; right: -120px; width: 420px; height: 420px; border-radius: 50%; background: rgba(255, 255, 255, 0.08); }
.cta-band h2 { position: relative; color: #fff; font-weight: 500; }
.cta-band p { position: relative; opacity: 0.9; }
.cta-band .btn-group { position: relative; justify-content: center; }
.cta-band .btn--primary { background: var(--c-accent); color: var(--c-dark); box-shadow: none; }
.cta-band .btn--ghost { color: #fff; }

.commitments { position: relative; z-index: 2; margin-bottom: -70px; padding-top: 40px; }
.commitments__list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 0; padding: 0; list-style: none; }
.commitment { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 20px 12px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-lg); text-align: center; }
.commitment__icon { display: grid; place-items: center; width: 54px; height: 54px; margin-bottom: 6px; border-radius: 50%; background: var(--c-sky-2); color: var(--c-primary); }
.commitment__icon .icon { width: 26px; height: 26px; }
.commitment__title { font-family: var(--f-heading); font-weight: 600; color: var(--c-primary); }
.commitment__text { font-size: 0.8rem; color: var(--c-muted); line-height: 1.5; }

.site-footer { padding-top: 120px; background: var(--c-dark); color: rgba(255, 255, 255, 0.8); font-size: var(--fs-sm); }
.site-footer a { color: #fff; text-decoration: none; }
.site-footer a:hover { color: var(--c-accent); }
.site-footer__grid { display: grid; gap: 32px; }
.site-footer__logo { display: inline-block; padding: 8px 14px; background: #fff; border-radius: var(--radius-sm); }
.site-footer__logo img { width: 72px; }
.site-footer__company { margin: 16px 0 10px; font-family: var(--f-heading); font-weight: 600; color: #fff; font-size: 1rem; }
.site-footer__info, .site-footer__links, .site-footer__social { margin: 0; padding: 0; list-style: none; }
.site-footer__info li { display: flex; gap: 10px; margin-bottom: 10px; }
.site-footer__info .icon { margin-top: 3px; color: var(--c-accent); }
.site-footer__title { margin: 0 0 14px; font-family: var(--f-heading); font-size: 1rem; font-weight: 600; color: #fff; text-transform: uppercase; }
.site-footer__links li { margin-bottom: 8px; }
.site-footer__links a { color: rgba(255, 255, 255, 0.8); }
.site-footer__social { display: flex; gap: 10px; }
.site-footer__social a { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; background: rgba(255, 255, 255, 0.1); }
.site-footer__social a:hover { background: var(--c-accent); color: var(--c-dark); }
.site-footer__bct { margin-top: 18px; }
.site-footer__bct img { width: 150px; }
.site-footer__bottom { margin-top: 40px; padding: 18px 0 84px; background: var(--c-dark-2); text-align: center; color: rgba(255, 255, 255, 0.6); font-size: 0.8rem; }

/* ==========================================================================
   12. Nút liên hệ nổi — mobile: thanh dưới đáy; desktop: hotline góc trái (như mẫu) + Zalo/Messenger góc phải
   ========================================================================== */
.float-contact { position: fixed; left: 0; right: 0; bottom: 0; z-index: 200; display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; background: #fff; box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.12); }
.float-contact__btn { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; min-height: 60px; font-size: 0.75rem; font-weight: 600; color: #fff; text-decoration: none; }
.float-contact__btn:hover { color: #fff; }
.float-contact__btn svg { width: 22px; height: 22px; fill: currentColor; }
.float-contact__phone { background: var(--c-primary); }
.float-contact__zalo { background: var(--c-zalo); }
.float-contact__mess { background: #a033ff; }

/* ==========================================================================
   13. Responsive
   ========================================================================== */
@media (min-width: 600px) {
	.form__row { grid-template-columns: 1fr 1fr; }
	.post-grid { grid-template-columns: repeat(2, 1fr); }
	.logo-grid { grid-template-columns: repeat(3, 1fr); }
	.solutions__grid { grid-template-columns: repeat(2, 1fr); }
	.featured__row { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 768px) {
	:root { --gutter: 24px; }
	.product-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
	.contact-cards, .commitments__list { grid-template-columns: repeat(4, 1fr); gap: 20px; }
	.site-footer__grid { grid-template-columns: 1.6fr 1fr 1fr 1fr; }
	.quote__form { padding: 32px; }
	.product-detail, .cat-desc { padding: 36px 40px; }
}
@media (min-width: 1024px) {
	:root { --header-h: 84px; }
	.nav-toggle { display: none; }
	.site-header__bar { padding: 8px 16px 8px 24px; }
	.site-logo img { width: 60px; }
	.primary-nav { position: static; max-height: none; padding: 0; background: none; box-shadow: none; overflow: visible; opacity: 1; visibility: visible; transform: none; }
	.primary-nav > ul, .primary-nav > div > ul { display: flex; gap: 2px; }
	.primary-nav a { position: relative; padding: 28px 14px; border: 0; font-size: 0.86rem; white-space: nowrap; }
	.primary-nav > ul > li > a::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: 20px; height: 2px; background: var(--c-primary); transform: scaleX(0); transition: transform 0.2s; }
	.primary-nav > ul > li.current-menu-item > a::after, .primary-nav > ul > li.current-menu-ancestor > a::after, .primary-nav > ul > li > a:hover::after { transform: none; }
	.primary-nav li { position: relative; }
	.primary-nav .sub-menu { position: absolute; top: 100%; left: 0; min-width: 250px; padding: 10px 0; background: #fff; border-radius: var(--radius-sm); box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transform: translateY(8px); transition: 0.2s; }
	.primary-nav li:hover > .sub-menu, .primary-nav li:focus-within > .sub-menu { opacity: 1; visibility: visible; transform: none; }
	.primary-nav .sub-menu a { padding: 9px 20px; font-size: 0.9rem; }
	.primary-nav__contact { display: none; }
	.header-cta { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--c-primary); font-weight: 700; font-size: 1.05rem; }
	.header-cta__icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: var(--c-primary); color: #fff; animation: kgl-ring 2.4s infinite; }
	.header-cta__text { display: flex; flex-direction: column; line-height: 1.2; }
	.header-cta__text small { font-size: 0.72rem; font-weight: 500; color: var(--c-muted); }

	.hero { padding: calc(var(--header-h) + 50px) 0 110px; }
	.hero__inner { grid-template-columns: 1fr 1.05fr; gap: 32px; }
	.hero__text { text-align: left; }
	.hero__lead { margin-inline: 0; }
	.hero .btn-group, .hero__chips { justify-content: flex-start; }
	.hero__rings { left: 72%; }
	.hero__stage { width: 100%; max-width: 600px; }
	.hero__word { font-size: 10rem; }

	.about__grid { grid-template-columns: 1fr 1fr; gap: 64px; }
	.about__grid--page { grid-template-columns: 0.8fr 1.2fr; }
	.about__grid--page .about__media { position: sticky; top: calc(var(--header-h) + 30px); }
	.vision__grid { grid-template-columns: 1.1fr 0.9fr; gap: 72px; }
	.featured__row { grid-template-columns: repeat(5, 1fr); gap: 20px; align-items: start; }
	.featured__item:nth-child(even) { margin-top: 48px; }
	.brand-cards { grid-template-columns: repeat(4, 1fr); gap: 20px; }
	.product-grid { grid-template-columns: repeat(4, 1fr); gap: 24px; }
	.solutions__grid { grid-template-columns: repeat(5, 1fr); }
	.quote__grid { grid-template-columns: 1fr 1fr; gap: 56px; }
	.quote__form--sticky { position: sticky; top: calc(var(--header-h) + 30px); }
	.logo-grid { grid-template-columns: repeat(6, 1fr); }
	.post-grid { grid-template-columns: repeat(4, 1fr); }
	.with-sidebar { grid-template-columns: minmax(0, 1fr) 320px; gap: 48px; }
	.post-grid--list { grid-template-columns: repeat(3, 1fr); }
	.product-top__grid { grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
	.product-gallery { position: sticky; top: calc(var(--header-h) + 30px); }

	.float-contact { left: 24px; right: 24px; bottom: 24px; display: flex; justify-content: flex-end; gap: 12px; background: none; box-shadow: none; pointer-events: none; }
	.float-contact__btn { pointer-events: auto; width: 54px; height: 54px; min-height: 0; border-radius: 50%; box-shadow: var(--shadow-lg); }
	.float-contact__btn span { display: none; }
	.float-contact__phone { position: absolute; left: 0; bottom: 0; flex-direction: row; gap: 10px; width: auto; height: 50px; padding: 0 22px 0 6px; border-radius: var(--radius-pill); background: #d0302f; font-size: 1rem; letter-spacing: 0.04em; }
	.float-contact__phone svg { box-sizing: content-box; padding: 9px; border-radius: 50%; background: #fff; fill: #d0302f; animation: kgl-ring 2s infinite; }
	.float-contact__phone span { display: inline; }
	.site-footer__bottom { padding-bottom: 18px; }
}
@media (min-width: 1024px) and (min-height: 700px) {
	.sidebar__sticky { position: sticky; top: calc(var(--header-h) + 30px); }
}
@keyframes kgl-ring { 0% { box-shadow: 0 0 0 0 rgba(11, 79, 156, 0.45); } 70% { box-shadow: 0 0 0 12px rgba(11, 79, 156, 0); } 100% { box-shadow: 0 0 0 0 rgba(11, 79, 156, 0); } }
@media (prefers-reduced-motion: reduce) {
	*, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}