/* ========================================
   BI3LI - Main Design
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Tahoma, sans-serif;
    background: #ffffff;
    color: #171717;
    line-height: 1.7;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    width: min(1120px, 92%);
    margin: 0 auto;
}


/* ========================================
   Header
   ======================================== */

.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid #eeeeee;
    backdrop-filter: blur(10px);
}

.header-content {
    min-height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.logo {
    font-size: 34px;
    font-weight: 900;
    letter-spacing: -2px;
    color: #ff4b16;
}

.nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav a {
    font-size: 15px;
    font-weight: 700;
    color: #333333;
    transition: 0.25s;
}

.nav a:hover {
    color: #ff4b16;
}

.header-button {
    background: #ff4b16;
    color: #ffffff;
    padding: 11px 22px;
    border-radius: 12px;
    font-weight: 800;
    transition: 0.25s;
}

.header-button:hover {
    background: #e83f0c;
    transform: translateY(-2px);
}


/* ========================================
   Buttons
   ======================================== */

.hero-buttons {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 30px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 12px 25px;
    border-radius: 14px;
    font-weight: 800;
    transition: 0.25s;
}

.btn-primary {
    background: #ff4b16;
    color: #ffffff;
    box-shadow: 0 12px 25px rgba(255, 75, 22, 0.20);
}

.btn-primary:hover {
    transform: translateY(-3px);
    background: #e83f0c;
}

.btn-secondary {
    background: #ffffff;
    color: #ff4b16;
    border: 2px solid #ff4b16;
}

.btn-secondary:hover {
    background: #fff3ee;
}

.btn-dark {
    background: #171717;
    color: #ffffff;
}

.btn-dark:hover {
    background: #000000;
    transform: translateY(-3px);
}

.center-button {
    text-align: center;
    margin-top: 40px;
}


/* ========================================
   Hero
   ======================================== */

.hero {
    background:
        radial-gradient(circle at 85% 20%, rgba(255, 75, 22, 0.12), transparent 32%),
        linear-gradient(135deg, #fffaf7 0%, #ffffff 55%, #fff4ee 100%);
    padding: 90px 0 100px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 70px;
}

.badge {
    display: inline-block;
    background: #fff0e9;
    color: #e83f0c;
    border: 1px solid #ffd3c2;
    padding: 8px 15px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 800;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: clamp(48px, 6vw, 76px);
    line-height: 1.05;
    letter-spacing: -3px;
    margin-bottom: 25px;
}

.hero h1 span {
    color: #ff4b16;
}

.hero-text > p {
    max-width: 650px;
    font-size: 20px;
    color: #555555;
}

.hero-note {
    margin-top: 20px;
    color: #777777;
    font-size: 14px;
    font-weight: 700;
}

.hero-visual {
    min-height: 390px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-card {
    width: min(360px, 100%);
    padding: 55px 35px;
    text-align: center;
    background: #ffffff;
    border: 1px solid #eeeeee;
    border-radius: 30px;
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.09);
    transform: rotate(2deg);
}

.visual-icon {
    width: 110px;
    height: 110px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff0e9;
    border-radius: 30px;
    font-size: 55px;
}

.visual-card strong {
    display: block;
    font-size: 24px;
    margin-bottom: 10px;
}

.visual-card p {
    color: #777777;
}


/* ========================================
   Sections
   ======================================== */

section {
    padding: 100px 0;
}

.section-heading {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 55px;
}

.section-heading > span {
    color: #ff4b16;
    font-weight: 900;
    font-size: 15px;
}

.section-heading h2 {
    font-size: clamp(32px, 4vw, 50px);
    line-height: 1.2;
    margin: 12px 0 18px;
    letter-spacing: -1px;
}

.section-heading p {
    color: #666666;
    font-size: 18px;
}


/* ========================================
   Problem
   ======================================== */

.problem {
    background: #ffffff;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.problem-card {
    padding: 32px;
    background: #fafafa;
    border: 1px solid #eeeeee;
    border-radius: 22px;
    transition: 0.25s;
}

.problem-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.07);
}

.problem-card > div {
    font-size: 38px;
    margin-bottom: 15px;
}

.problem-card h3 {
    font-size: 21px;
    margin-bottom: 8px;
}

.problem-card p {
    color: #666666;
}


/* ========================================
   Merchants
   ======================================== */

.merchants {
    background: #fff7f3;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.benefit {
    background: #ffffff;
    border: 1px solid #eeeeee;
    border-radius: 22px;
    padding: 30px 22px;
    text-align: center;
}

.benefit-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff0e9;
    border-radius: 20px;
    font-size: 32px;
}

.benefit h3 {
    margin-bottom: 8px;
}

.benefit p {
    color: #666666;
    font-size: 14px;
}


/* ========================================
   Marketers
   ======================================== */

.marketers {
    background: #ffffff;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.step {
    position: relative;
    padding: 35px 25px;
    background: #f8f8f8;
    border-radius: 22px;
    border: 1px solid #eeeeee;
}

.step-number {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ff4b16;
    color: #ffffff;
    border-radius: 50%;
    font-weight: 900;
    margin-bottom: 20px;
}

.step h3 {
    margin-bottom: 8px;
}

.step p {
    color: #666666;
    font-size: 14px;
}


/* ========================================
   How it works
   ======================================== */

.how-it-works {
    background: #171717;
    color: #ffffff;
}

.how-it-works .section-heading p,
.how-it-works .section-heading {
    color: #ffffff;
}

.flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.flow-item {
    min-width: 155px;
    padding: 25px 15px;
    background: #242424;
    border: 1px solid #3a3a3a;
    border-radius: 18px;
    text-align: center;
}

.flow-item span {
    color: #ff4b16;
    font-weight: 900;
    font-size: 14px;
}

.flow-item h3 {
    font-size: 16px;
    margin-top: 8px;
}

.flow-arrow {
    color: #ff4b16;
    font-size: 24px;
}


/* ========================================
   Why
   ======================================== */

.why {
    background: #f8f8f8;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.why-grid > div {
    background: #ffffff;
    padding: 30px 20px;
    text-align: center;
    border-radius: 22px;
    border: 1px solid #eeeeee;
}

.why-grid strong {
    display: block;
    font-size: 35px;
    margin-bottom: 10px;
}

.why-grid h3 {
    margin-bottom: 6px;
}

.why-grid p {
    color: #666666;
    font-size: 14px;
}


/* ========================================
   FAQ
   ======================================== */

.faq {
    background: #ffffff;
}

.faq-list {
    max-width: 850px;
    margin: auto;
}

.faq-list details {
    border: 1px solid #e7e7e7;
    border-radius: 16px;
    margin-bottom: 12px;
    padding: 0 22px;
    background: #ffffff;
}

.faq-list summary {
    cursor: pointer;
    padding: 20px 0;
    font-weight: 800;
}

.faq-list p {
    padding: 0 0 20px;
    color: #666666;
}


/* ========================================
   Final CTA
   ======================================== */

.join {
    background:
        radial-gradient(circle at 15% 20%, rgba(255, 255, 255, 0.18), transparent 30%),
        linear-gradient(135deg, #ff4b16, #e83f0c);
    color: #ffffff;
    text-align: center;
}

.join-content {
    max-width: 800px;
}

.join h2 {
    font-size: clamp(40px, 5vw, 65px);
    margin: 12px 0;
}

.join p {
    font-size: 19px;
    opacity: 0.9;
}

.join .btn-primary {
    background: #ffffff;
    color: #ff4b16;
}

.join .btn-primary:hover {
    background: #fff3ee;
}

.join .btn-dark {
    background: #171717;
}


/* ========================================
   Footer
   ======================================== */

.footer {
    background: #111111;
    color: #ffffff;
    text-align: center;
    padding: 45px 0;
}

.footer strong {
    color: #ff4b16;
    font-size: 30px;
}

.footer p {
    margin: 5px 0 12px;
    color: #cccccc;
}

.footer small {
    color: #777777;
}


/* ========================================
   Responsive - Tablet
   ======================================== */

@media (max-width: 900px) {

    .nav {
        display: none;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text > p {
        margin: auto;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-visual {
        min-height: 300px;
    }

    .problem-grid {
        grid-template-columns: 1fr;
    }

    .benefits-grid,
    .steps-grid,
    .why-grid {
        grid-template-columns: repeat(2, 1fr);
    }

}


/* ========================================
   Responsive - Mobile
   ======================================== */

@media (max-width: 600px) {

    .header-content {
        min-height: 65px;
    }

    .logo {
        font-size: 28px;
    }

    .header-button {
        padding: 9px 14px;
        font-size: 13px;
    }

    section {
        padding: 70px 0;
    }

    .hero {
        padding: 65px 0 75px;
    }

    .hero h1 {
        font-size: 48px;
        letter-spacing: -2px;
    }

    .hero-text > p {
        font-size: 17px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .visual-card {
        padding: 40px 25px;
    }

    .benefits-grid,
    .steps-grid,
    .why-grid {
        grid-template-columns: 1fr;
    }

    .section-heading h2 {
        font-size: 34px;
    }

    .section-heading p {
        font-size: 16px;
    }

    .flow {
        flex-direction: column;
    }

    .flow-arrow {
        transform: rotate(-90deg);
    }

}
/* ========================================
   BI3LI Network Card
   ======================================== */

.network-card {
    width: min(500px, 100%);
    background: #ffffff;
    border: 1px solid #eeeeee;
    border-radius: 30px;
    padding: 30px;
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.10);
}

.network-top {
    text-align: center;
    margin-bottom: 28px;
}

.network-top span {
    display: block;
    font-size: 28px;
    margin-bottom: 5px;
}

.network-top strong {
    display: block;
    color: #ff4b16;
    font-size: 27px;
}

.network-top small {
    color: #777777;
}

.network-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.network-box {
    flex: 1;
    min-height: 130px;
    padding: 18px 10px;
    background: #fafafa;
    border: 1px solid #eeeeee;
    border-radius: 18px;
    text-align: center;
}

.network-box span {
    display: block;
    font-size: 30px;
    margin-bottom: 7px;
}

.network-box strong {
    display: block;
    font-size: 15px;
}

.network-box small {
    display: block;
    color: #777777;
    font-size: 11px;
    margin-top: 4px;
}

.network-main {
    background: #fff0e9;
    border-color: #ffd1bf;
}

.network-line {
    color: #ff4b16;
    font-size: 20px;
    font-weight: 900;
}

.network-result {
    margin-top: 20px;
    padding: 14px;
    border-radius: 14px;
    background: #171717;
    color: #ffffff;
    text-align: center;
}

.network-result span {
    color: #ff4b16;
    font-size: 20px;
    margin-left: 5px;
}

.network-result strong {
    font-size: 14px;
}


/* Mobile */
@media (max-width: 600px) {

    .network-card {
        padding: 20px 12px;
        border-radius: 22px;
    }

    .network-flow {
        gap: 4px;
    }

    .network-box {
        min-height: 105px;
        padding: 12px 5px;
    }

    .network-box span {
        font-size: 24px;
    }

    .network-box strong {
        font-size: 12px;
    }

    .network-box small {
        font-size: 9px;
    }

    .network-line {
        font-size: 14px;
    }

}
/* Final BI3LI Logo Size */

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    width: 110px !important;
    height: auto !important;
    max-width: 110px !important;
    display: block;
}

@media (max-width: 600px) {
    .logo img {
        width: 90px !important;
        max-width: 90px !important;
    }
}
/* =========================================
   BI3LI - Mobile Optimization
   ========================================= */

@media (max-width: 650px) {

    body {
        overflow-x: hidden;
    }

    .container {
        width: 92%;
        max-width: 100%;
        margin: 0 auto;
    }

    /* Header */
    header {
        padding: 12px 0;
    }

    .header-inner {
        gap: 10px;
    }

    .logo img {
        width: 90px;
    }

    nav {
        gap: 10px;
        font-size: 13px;
    }

    /* Hero */
    .hero {
        padding: 55px 0 45px;
    }

    .hero h1 {
        font-size: 36px;
        line-height: 1.35;
    }

    .hero p {
        font-size: 16px;
        line-height: 1.8;
    }

    .hero-buttons {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        width: 100%;
        max-width: 360px;
        margin: 25px auto 0;
    }

    .hero-buttons .btn {
        width: 100%;
        box-sizing: border-box;
        text-align: center;
    }

    /* Sections */
    section {
        padding: 55px 0;
    }

    .section-heading h2 {
        font-size: 30px;
        line-height: 1.4;
    }

    .section-heading span {
        font-size: 14px;
    }

    /* Cards */
    .why-grid,
    .features-grid,
    .cards-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .why-card {
        padding: 25px 20px;
    }

    .why-card h3 {
        font-size: 20px;
    }

    .why-card p {
        font-size: 14px;
        line-height: 1.8;
    }

    /* FAQ */
    .faq-list {
        width: 100%;
    }

    .faq-list details {
        padding: 18px;
    }

    .faq-list summary {
        font-size: 15px;
        line-height: 1.7;
    }

    .faq-list p {
        font-size: 14px;
        line-height: 1.8;
    }

    /* Final CTA */
    .join {
        padding: 60px 0;
    }

    .join-content h2 {
        font-size: 32px;
        line-height: 1.4;
    }

    .join-content p {
        font-size: 15px;
        line-height: 1.8;
    }

    /* Footer */
    .footer {
        padding: 45px 0;
        text-align: center;
    }
}