/* -------------------------------- SECTION 1 ------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Google+Sans:ital,opsz,wght@0,17..18,400..700;1,17..18,400..700&display=swap');
:root {
    --primary: #c5a059; /* Màu Gold Inox sang trọng */
    --dark: #0f172a;
    --text: #334155;
    --font-size-base: 17px;
    --font-family: "Google Sans", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; outline: none; font-family: var(--font-family);}
body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text);
    line-height: 1.7;
    background: #fff;
    -webkit-font-smoothing: antialiased;
}
/* Commitment Box */
.commitment-wrapper {
    background: var(--dark);
    border-radius: 32px;
    padding: 60px;
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
    margin-bottom: 100px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.15);
}

.com-header { max-width: 400px; }
.com-header .section-title { color: #fff; font-size: 32px; margin-bottom: 15px; }
.com-header p { color: #94a3b8; font-size: 16px; }

.com-list { display: flex; flex-direction: column; gap: 30px; }
.com-item { display: flex; gap: 20px; align-items: flex-start; }

.com-icon-box {
    width: 50px; height: 50px; background: rgba(197, 160, 89, 0.15);
    border-radius: 14px; display: flex; align-items: center;
    justify-content: center; color: var(--primary); flex-shrink: 0;
}

.com-text h4 { font-size: 18px; margin-bottom: 5px; color: var(--primary); }
.com-text p { font-size: 15px; color: #cbd5e1; line-height: 1.5; }
.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }

/* Header */
.header {
    height: 90px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    position: fixed;
    top: 0; width: 100%; z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    display: flex; align-items: center;
}
.header-wrapper { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.logo-brand { font-size: 28px; font-weight: 900; color: var(--dark); }
.logo .stars { color: var(--primary); font-size: 11px; margin-top: -8px; letter-spacing: 1px; }

.nav-desktop a {
    text-decoration: none; color: var(--dark);
    margin: 0 18px; font-weight: 600; font-size: 17px;
    transition: 0.3s; opacity: 0.8;
}
.nav-desktop a:hover { color: var(--primary); opacity: 1; }

.btn-phone {
    display: flex; align-items: center; gap: 10px;
    background: var(--dark); color: #fff;
    padding: 12px 22px; border-radius: 50px;
    text-decoration: none; font-weight: 600; font-size: 15px;
    transition: 0.3s;
}
.btn-phone:hover { background: var(--primary);}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    position: relative; overflow: hidden;
}
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items: center; }

.badge-new {
    display: inline-block; background: #fff; color: var(--primary);
    padding: 6px 16px; border-radius: 50px;
    font-size: 14px; font-weight: 700; border: 1px solid var(--primary);
    margin-bottom: 24px;
}
.hero-title {
    font-size: 48px; font-weight: 800; line-height: 1.2;
    color: var(--dark); margin-bottom: 24px;
}
.hero-title .highlight { color: var(--primary); }
.hero-desc { font-size: 19px; margin-bottom: 40px; opacity: 0.9; max-width: 90%; }

.hero-benefits { margin-bottom: 48px; }
.benefit-item { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; }
.icon-wrap {
    width: 42px; height: 42px; background: #fff;
    display: flex; align-items: center; justify-content: center;
    border-radius: 12px; color: var(--primary);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.benefit-item span { font-weight: 600; font-size: 17px; color: var(--dark); }

.btn-main {
    display: inline-flex; align-items: center; gap: 12px;
    background: var(--dark); color: #fff;
    padding: 22px 38px; border-radius: 16px;
    text-decoration: none; font-weight: 700;
    font-size: 17px; box-shadow: 0 20px 40px rgba(15, 23, 42, 0.2);
    transition: 0.3s;
}
.btn-main:hover { background: #1e293b; }

/* Hero Visual */
.image-wrapper { position: relative; }
.img-hero { width: 100%; border-radius: 32px; box-shadow: 0 40px 80px rgba(0,0,0,0.15); }
.glass-card {
    position: absolute; bottom: 30px; left: -200px;
    background: rgba(255, 255, 255, 0.85); backdrop-filter: blur(10px);
    padding: 20px 25px; border-radius: 20px;
    display: flex; align-items: center; gap: 15px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}
.card-icon { font-size: 32px; }
.card-text strong { display: block; font-size: 17px; color: var(--dark); }
.card-text span { font-size: 14px; color: #666; }

/* Responsive */
@media (max-width: 992px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero-benefits{
        text-align: start !important;
    }
    .hero-title { font-size: 34px; }
    .hero-desc { margin: 0 auto 40px; }
    .glass-card { left: 20px; bottom: 20px; display: none;}
    .nav-desktop { display: none; }
}
/* Hero Visual Video Fix */
.video-hero-wrapper {
    position: relative;
    display: block;
    width: 100%;
    max-width: 380px; /* Video dọc cần giới hạn chiều rộng trên desktop */
    margin-left: auto;
    aspect-ratio: 9 / 16;
    border-radius: 20px;
    cursor: pointer;
}

.video-hero {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: 0 40px 80px rgba(0,0,0,0.15);
}

/* Hiệu ứng Nút Play Tỏa Sóng */
.play-trigger {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
    pointer-events: none; /* Để không chặn click của thẻ a */
}

.play-icon-main {
    width: 70px;
    height: 70px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 2;
    box-shadow: 0 10px 25px rgba(197, 160, 89, 0.5);
}

.pulse-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70px;
    height: 70px;
    background: var(--primary);
    border-radius: 50%;
    z-index: 1;
    animation: pulse-ring 2s infinite;
}

@keyframes pulse-ring {
    0% { transform: translate(-50%, -50%) scale(1); opacity: 0.8; }
    100% { transform: translate(-50%, -50%) scale(2.2); opacity: 0; }
}

.video-hero-wrapper:hover .play-icon-main {
    transform: scale(1.1);
    transition: 0.3s;
}

/* Responsive Fix */
@media (max-width: 992px) {
    .video-hero-wrapper {
        max-width: 100%;
        margin: 0 auto;
    }
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    .hero-benefits {
        text-align: left !important;
        max-width: 320px;
        margin: 0 auto 40px;
    }
    .glass-card {
        left: 50% !important;
        transform: translateX(-50%) !important;
        bottom: -20px !important;
        white-space: nowrap;
    }
}
/* -------------------------------- SECTION 1 ------------------------------- */
/* -------------------------------- SECTION 2 ------------------------------- */
/* Section Problem & Solution */
.problem-solution {
    padding: 100px 0;
    background-color: #ffffff;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-header .sub-title {
    color: var(--primary);
    text-transform: uppercase;
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 10px;
}

.section-header .section-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 20px;
}

.grid-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.box {
    padding: 40px;
    border-radius: 24px;
    transition: all 0.3s ease;
}

.problem-box {
    background: #fdf2f2; /* Màu đỏ nhạt dịu mắt */
    border: 1px solid #fee2e2;
}

.solution-box {
    background: var(--dark);
    color: #fff;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.box-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 30px;
    position: relative;
    padding-bottom: 15px;
}

.box-title::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
}

.problem-box .box-title { color: #991b1b; }
.problem-box .box-title::after { background: #ef4444; }

.solution-box .box-title { color: #fff; }
.solution-box .box-title::after { background: var(--primary); }

.box-list {
    list-style: none;
}

.box-list li {
    display: grid;
    grid-template-columns: 30% 70%;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 25px;
}

.icon-circle {
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.icon-circle img{
    border-radius: 10px;
    width: 150px;
    aspect-ratio: 16/9;
}
.icon-circle.red img{
    border: 3px solid red;
}
.icon-circle.gold img{
    border: 3px solid #22c55e;
}
.icon-circle.red { background: #fee2e2; color: #ef4444; }
.icon-circle.gold { background: rgba(197, 160, 89, 0.2); color: var(--primary); }

.box-list p {
    font-size: 17px;
    line-height: 1.6;
}

.solution-box p { color: #cbd5e1; }
.solution-box p strong { color: #22c55e; }

.box-footer {
    margin-top: 20px;
    padding-top: 25px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.box-footer span {
    font-style: italic;
    color: var(--primary);
    font-weight: 600;
}

/* Responsive */
@media (max-width: 992px) {
    .grid-box { grid-template-columns: 1fr; }
    .box { padding: 25px; }
    .section-header .section-title { font-size: 28px; }
}
@media (max-width: 768px) {
    .icon-circle img{
        width: 100%;
        aspect-ratio: 1/1;
    }
    .problem-box{
        padding: 25px 25px 0px 25px;
    }
}
/* -------------------------------- SECTION 2 ------------------------------- */
/* -------------------------------- SECTION 4 ------------------------------- */
.product-gallery {
    padding: 100px 0;
    background-color: #fcfcfc;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.product-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: all 0.4s ease;
    border: 1px solid #f0f0f0;
}

.product-card:hover {
    box-shadow: 0 20px 50px rgba(0,0,0,0.1);
}

.product-img {
    position: relative;
    height: 280px;
    overflow: hidden;
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.6s ease;
}

.product-tag {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(255,255,255,0.9);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 700;
    color: var(--dark);
}

.product-info {
    padding: 30px;
}

.product-info h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 15px;
}

.product-specs {
    margin-bottom: 20px;
}

.spec-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
    font-size: 15px;
    color: #64748b;
}

.spec-item svg {
    color: var(--primary);
}

.product-desc {
    font-size: 16px;
    line-height: 1.5;
    color: #666;
    margin-bottom: 25px;
    height: 72px; /* Giữ các card đều nhau */
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.btn-outline {
    display: block;
    text-align: center;
    padding: 14px;
    border: 2px solid var(--dark);
    color: var(--dark);
    text-decoration: none;
    border-radius: 12px;
    font-weight: 700;
    transition: 0.3s;
}

.btn-outline:hover {
    background: var(--dark);
    color: #fff;
}

/* Responsive */
@media (max-width: 1100px) {
    .product-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .product-grid { grid-template-columns: 1fr; }
    .product-img { height: 240px; }
    .product-gallery { padding: 60px 0; }
}
/* -------------------------------- SECTION 4 ------------------------------- */
/* -------------------------------- SECTION 5 ------------------------------- */
.specs-material {
    padding: 100px 0;
    background: radial-gradient(circle at center, #ffffff 0%, #f1f5f9 100%);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin-top: 50px;
}

.spec-card {
    background: rgba(255, 255, 255, 0.8);
    padding: 40px 25px;
    border-radius: 24px;
    text-align: center;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.spec-card:hover {
    background: #fff;
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
    border-color: var(--primary);
}

.spec-icon {
    width: 70px;
    height: 70px;
    background: var(--dark);
    color: var(--primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.spec-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 15px;
}

.spec-card p {
    font-size: 15px;
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 20px;
}

.spec-tags {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-top: auto;
}

.spec-tags li {
    background: #f1f5f9;
    color: var(--dark);
    font-size: 12px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 50px;
    text-transform: uppercase;
}

/* Responsive */
@media (max-width: 1200px) {
    .specs-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
    .specs-grid { grid-template-columns: 1fr; }
    .specs-material { padding: 60px 0; }
    .spec-card { padding: 30px 20px; }
}
/* -------------------------------- SECTION 5 ------------------------------- */
/* -------------------------------- SECTION 6 ------------------------------- */
.process-modern {
    padding: 100px 0;
    background: #fdfdfd;
}

.title-line {
    width: 60px;
    height: 4px;
    background: var(--primary);
    margin: 20px auto 0;
}

.process-stepper {
    margin-top: 80px;
    position: relative;
    padding-bottom: 20px;
}

/* Đường kẻ nối ngang */
.step-line {
    position: absolute;
    top: 50px; /* Căn giữa vòng tròn icon */
    left: 5%;
    right: 5%;
    height: 2px;
    background: #e5e7eb;
    z-index: 1;
}

.steps-container {
    display: flex;
    justify-content: space-between;
    position: relative;
    z-index: 2;
}

.step-item {
    flex: 1;
    text-align: center;
    padding: 0 15px;
}

.step-circle-wrap {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto 30px;
}

.step-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: #fff;
    border: 2px solid var(--primary);
    color: var(--primary);
    font-size: 14px;
    font-weight: 700;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
}

.step-icon {
    width: 100%;
    height: 100%;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #1f2937;
    box-shadow: 0 4px 10px rgba(0,0,0,0.03);
    transition: 0.3s ease;
}

.step-item:hover .step-icon {
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 10px 20px rgba(0,0,0,0.08);
}

.step-content h3 {
    font-size: 19px;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 15px;
}

.step-content p {
    font-size: 15px;
    color: #6b7280;
    line-height: 1.6;
}

/* Mobile Responsive */
@media (max-width: 992px) {
    .step-line { display: none; }
    .steps-container {
        flex-direction: column;
        gap: 50px;
    }
    .step-item {
        display: flex;
        text-align: left;
        align-items: center;
        gap: 25px;
    }
    .step-circle-wrap {
        margin: 0;
        flex-shrink: 0;
        width: 80px;
        height: 80px;
    }
    .step-content {
        flex: 1;
    }
    .step-content p { font-size: 17px; } /* Giữ chuẩn 17px mobile như yêu cầu */
}
/* -------------------------------- SECTION 6 ------------------------------- */
/* ------------------------------- SECTIOn 7 8 ------------------------------ */
/* Project Grid */
.project-showcase { margin-bottom: 80px; }
.project-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}
.project-item {
    position: relative;
    height: 350px;
    border-radius: 16px;
    overflow: hidden;
    display: block;
}
.project-item img { width: 100%; height: 100%; object-fit: cover; transition: 0.5s; }
.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 25px;
    opacity: 0;
    transition: 0.4s;
}
.project-overlay h4 { color: var(--primary); font-size: 18px; margin-bottom: 5px; }
.project-overlay span { color: #fff; font-size: 14px; opacity: 0.8; }
.project-item:hover .project-overlay { opacity: 1; }
.project-item:hover img { transform: scale(1.1); }

/* Feedback Slider */
.feedback-slider-wrap {
    padding: 60px 0;
    position: relative;
}
.testimo-card {
    background: #fff;
    padding: 50px 40px;
    border-radius: 24px;
    border: 1px solid #eef2f6;
    height: 100%;
    position: relative;
    -webkit-user-select: none; /* Safari */
    -ms-user-select: none;     /* IE 10 và cũ hơn */
    user-select: none;         /* Tiêu chuẩn (Chrome, Firefox, Edge) */
    
    /* Thêm con trỏ chuột dạng default để người dùng không có cảm giác bôi đen được */
    cursor: default;
}
.testimo-quote {
    font-size: 80px;
    color: var(--primary);
    opacity: 0.2;
    position: absolute;
    top: 20px; left: 30px;
    font-family: serif;
}
.testimo-card p {
    font-size: 17px;
    line-height: 1.8;
    color: var(--text);
    margin-bottom: 30px;
    position: relative;
    z-index: 1;
}
.testimo-user strong { display: block; font-size: 16px; color: var(--dark); }
.testimo-user span { font-size: 14px; color: #64748b; }

/* Custom Swiper */
.feedback-swiper { padding: 20px 20px 60px; }
.custom-nav {
    color: var(--dark) !important;
    width: 45px !important;
    height: 45px !important;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}
.custom-nav:after { font-size: 18px !important; font-weight: bold; }
.swiper-pagination-bullet-active { background: var(--primary) !important; }

@media (max-width: 1024px) {
    .project-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .project-grid { grid-template-columns: 1fr; }
    .project-item { height: auto; }
}
.testimo-user {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 20px;
}

.user-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--primary);
    flex-shrink: 0;
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-info strong {
    font-size: 16px;
    color: var(--dark);
    margin-bottom: 2px;
}

.user-info span {
    font-size: 13px;
    color: #64748b;
}

/* Đảm bảo card không bị lệch chiều cao khi có avatar */
.testimo-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
/* ------------------------------- SECTIOn 7 8 ------------------------------ */
/* -------------------------------- SECTION 9 ------------------------------- */
/* CTA Section */
.cta-section {
    padding: 80px 0;
    background: #fff;
}
.cta-wrapper {
    background: var(--dark);
    border-radius: 40px;
    padding: 80px 40px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.cta-wrapper::before {
    content: "";
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(197, 160, 89, 0.1) 0%, transparent 70%);
}
.cta-content { position: relative; z-index: 1; max-width: 800px; margin: 0 auto; }
.cta-title { font-size: 36px; font-weight: 800; margin-bottom: 20px; line-height: 1.3; }
.cta-desc { font-size: 18px; color: #cbd5e1; margin-bottom: 40px; }

.cta-form {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-bottom: 25px;
}
.cta-form .form-group { flex: 1; max-width: 250px; }
.cta-form input {
    width: 100%;
    padding: 18px 25px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.05);
    color: #fff;
    font-size: 16px;
    transition: 0.3s;
}
.cta-form input:focus { border-color: var(--primary); background: rgba(255,255,255,0.1); outline: none; }

.btn-submit {
    background: var(--primary);
    color: var(--dark);
    padding: 19px 35px;
    border-radius: 12px;
    border: none;
    font-weight: 800;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: 0.3s;
}
.btn-submit:hover { transform: translateY(-3px); box-shadow: 0 10px 20px rgba(197, 160, 89, 0.3); }

.cta-trust { font-size: 14px; color: #94a3b8; }

/* Footer */
.footer { background: #0a0f1a; color: #fff; padding: 80px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 60px; margin-bottom: 60px; }
.footer-info .logo-brand { color: #fff; }
.footer-about { margin-top: 20px; color: #94a3b8; line-height: 1.8; }
.footer h4 { font-size: 20px; margin-bottom: 25px; color: var(--primary); }
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 12px; color: #cbd5e1; }
.footer ul a { color: #cbd5e1; text-decoration: none; transition: 0.3s; }
.footer ul a:hover { color: var(--primary); }

.footer-bottom { border-top: 1px solid rgba(255,255,255,0.05); padding-top: 30px; text-align: center; color: #64748b; font-size: 14px; }

/* Floating Buttons */
.floating-contact { position: fixed; bottom: 30px; right: 30px; z-index: 1000; display: flex; flex-direction: column; gap: 15px; }
.f-btn { width: 55px; height: 55px; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 15px rgba(0,0,0,0.2); transition: 0.3s; }
.f-btn.zalo { background: #fff; }
.f-btn.zalo img { width: 35px; }
.f-btn.phone { background: #22c55e; animation: pulse 2s infinite; }
.f-btn:hover { transform: scale(1.1); }

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7); }
    70% { box-shadow: 0 0 0 15px rgba(34, 197, 94, 0); }
    100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

@media (max-width: 768px) {
    .cta-form { flex-direction: column; align-items: center; }
    .cta-form .form-group, .btn-submit { max-width: 100%; width: 100%; }
    .btn-submit { height: 60px; justify-content: center; }
    .footer-grid { grid-template-columns: 1fr; gap: 40px; }
}
/* -------------------------------- SECTION 9 ------------------------------- */
/* Màu khi menu đang ở đúng section đó */
    .nav-desktop a.active {
        color: var(--primary) !important;
        position: relative;
    }
    
    .nav-desktop a.active::after {
        content: "";
        position: absolute;
        bottom: -5px;
        left: 0;
        width: 100%;
        height: 2px;
        background: var(--primary);
    }
/* --- TYPOGRAPHY SYSTEM --- */
:root {
    --font-main: 'Inter', 'Google Sans', sans-serif;
    --base-size: 17px; /* Kích thước chuẩn bạn yêu cầu */
}

/* Cấu hình chung cho toàn bộ text */
body {
    font-family: var(--font-main);
    font-size: var(--base-size);
    line-height: 1.7;
    color: var(--text);
    -webkit-font-smoothing: antialiased;
}

/* Định dạng tiêu đề trên Desktop */
h1 { font-size: 48px; font-weight: 800; line-height: 1.2; margin-bottom: 20px; }
h2 { font-size: 36px; font-weight: 800; line-height: 1.3; margin-bottom: 15px; }
h3 { font-size: 24px; font-weight: 700; line-height: 1.4; }
h4 { font-size: 20px; font-weight: 700; }
h5 { font-size: 18px; font-weight: 700; }
h6 { font-size: 16px; font-weight: 700; }

p {
    font-size: var(--base-size);
    margin-bottom: 15px;
    opacity: 0.9;
}

/* --- FIX KÍCH THƯỚC CHUẨN TRÊN MOBILE (< 768px) --- */
@media (max-width: 768px) {
    /* H1 trên Mobile không được quá to để tránh tràn viền */
    h1 { 
        font-size: 30px !important; 
        line-height: 1.2;
    }
    
    /* H2 cho các tiêu đề Section */
    h2 { 
        font-size: 26px !important; 
        line-height: 1.3;
    }
    
    /* H3 cho các tiêu đề Card/Sản phẩm */
    h3 { 
        font-size: 22px !important; 
    }

    h4 { font-size: 19px !important; }

    /* Quan trọng: Ép các đoạn văn và nội dung bullet luôn giữ mức 17px để dễ đọc */
    p, 
    .benefit-item span, 
    .spec-card p, 
    .process-item p, 
    .testimo-card p,
    .cta-desc {
        font-size: 17px !important;
        line-height: 1.6;
    }

    /* Tiêu đề phụ (Sub-title) thường nằm trên tiêu đề chính */
    .sub-title {
        font-size: 14px !important;
        letter-spacing: 1px;
    }

    /* Các nút CTA trên Mobile */
    .btn-main, .btn-hero, .btn-submit {
        font-size: 17px !important;
        padding: 16px 20px !important;
        width: 100%; /* Tràn ngang trên mobile để dễ bấm */
        text-align: center;
    }
}

/* Tối ưu riêng cho màn hình cực nhỏ như iPhone SE */
@media (max-width: 375px) {
    h1 { font-size: 26px !important; }
    h2 { font-size: 24px !important; }
    body { font-size: 16px; } /* Hạ nhẹ 1px để tránh quá ngộp trên màn bé */
}
@media screen and (max-width: 768px) {
    .hero{
        padding: 120px 0px 40px;
    }
    .problem-solution, .process-modern{
        padding: 50px 0px;
    }
    .commitment-wrapper{
        flex-direction: column;
        padding: 30px;
    }
    .feedback-slider-wrap{
        padding: 30px 0px;
    }
    .project-showcase{
        margin-bottom: 20px;
    }
    .cta-section{
        padding: 40px 0px;
    }
    .cta-wrapper{
        padding: 40px 30px;
    }
    .product-gallery{
        padding: 40px 0px;
    }
    .product-info{
        padding: 20px;
    }
    .hero-btns .btn-main{
        gap: 0px !important;
        padding: 16px 14px !important;
    }
}
/* ------------------------------ PHỤ KIỆN ----------------------------- */
.acc-compact {
    padding: 80px 0;
    background: #f8fafc;
}

.acc-compact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* 2 cột trên Desktop */
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
}

.acc-mini-card {
    background: #fff;
    border-radius: 16px;
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 20px;
    border: 1px solid #e2e8f0;
    transition: 0.3s;
}

.acc-mini-card:hover {
    border-color: var(--primary);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.acc-mini-img {
    width: 100px;
    height: 100px;
    flex-shrink: 0;
    border-radius: 12px;
    overflow: hidden;
}

.acc-mini-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.acc-mini-info h3 {
    font-size: 18px;
    margin-bottom: 5px;
    color: var(--dark);
}

.acc-mini-info p {
    font-size: 14px;
    color: #64748b;
    line-height: 1.4;
    margin-bottom: 8px;
}

.acc-qty {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    color: var(--primary);
    background: rgba(197, 160, 89, 0.1);
    padding: 2px 10px;
    border-radius: 4px;
    text-transform: uppercase;
}

/* Tối ưu tuyệt đối cho Mobile */
@media (max-width: 768px) {
    .acc-compact {
        padding: 50px 0;
    }
    .acc-compact-grid {
        grid-template-columns: 1fr; /* 1 cột trên Mobile */
        gap: 15px;
    }
    .acc-mini-card {
        padding: 12px;
        gap: 15px;
    }
    .acc-mini-img {
        width: 80px;
        height: 80px;
    }
    .acc-mini-info h3 {
        font-size: 16px;
    }
    .acc-mini-info p {
        font-size: 13px;
        line-height: 1.3;
    }
}
/* ------------------------------ PHỤ KIỆN ----------------------------- */