@charset "UTF-8";

/* --- Variables --- */
:root {
    /* Deep Navy Theme Palette */
    --bg-body: #0b1a2b;
    /* Midnight Navy */
    --bg-light: #12233a;
    --bg-card: #162a45;

    --text-main: #ffffff;
    --text-sub: #b7c4d5;
    /* Blue-tinted gray */
    --text-muted: #6b7c93;

    /* Vivid/Shining Colors - Glowing Mode */
    --vivid-blue: #00f2ff;
    --vivid-blue-dark: #2b7fff;
    --vivid-orange: #ff3366;
    --vivid-orange-grad: #ff5e62;
    --gold: #ffd700;

    --grad-primary: linear-gradient(135deg, #00f2ff 0%, #2b7fff 100%);
    --grad-secondary: linear-gradient(135deg, #ff3366 0%, #ff5e62 100%);
    --grad-silver: linear-gradient(135deg, #e0e0e0 0%, #999 100%);
    --grad-glow: linear-gradient(to right, #00f2ff, #2b7fff);

    /* Background Gradient */
    --bg-gradient: linear-gradient(to bottom, #0b1a2b 0%, #162a45 100%);

    --shadow-glow: 0 0 25px rgba(0, 242, 255, 0.3);
    --shadow-card: 0 15px 35px rgba(0, 0, 0, 0.3);

    --font-base: "Helvetica Neue", "Helvetica", "Arial", sans-serif;
    --font-heading: 'Inter', sans-serif;
    --font-mincho: "Zen Old Mincho", "Times New Roman", serif;

    --max-width: 1100px;
    --radius-soft: 6px;
    --radius-round: 30px;
}

/* --- Reset & Base --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-base);
    color: var(--text-main);
    line-height: 1.8;
    background-color: var(--bg-body);
    font-size: 16px;
    background-image: var(--bg-gradient);
    background-attachment: fixed;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

img {
    max-width: 100%;
    height: auto;
    vertical-align: bottom;
}

ul {
    list-style: none;
}

/* --- Layout Utilities --- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.section-title {
    font-size: 3rem;
    font-weight: 900;
    text-align: center;
    margin-bottom: 70px;
    color: #fff;
    letter-spacing: 0.1em;
    font-family: var(--font-heading);
    text-transform: uppercase;
    position: relative;
}

.section-title span {
    display: block;
    font-size: 1rem;
    color: var(--vivid-blue);
    margin-bottom: 10px;
    font-weight: 700;
    letter-spacing: 0.3em;
    text-shadow: 0 0 15px rgba(0, 242, 255, 0.4);
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 20px 60px;
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    border-radius: 50px;
    text-align: center;
    letter-spacing: 0.05em;
    transform: translateY(0);
    position: relative;
    z-index: 1;
    overflow: hidden;
    border: none;
    cursor: pointer;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 35px rgba(0, 242, 255, 0.5);
}

.btn-blue {
    background: var(--grad-primary);
    box-shadow: 0 10px 30px rgba(0, 114, 255, 0.3);
}

.btn-orange {
    background: var(--grad-secondary);
    box-shadow: 0 10px 30px rgba(255, 51, 102, 0.3);
}

/* --- Hero Section --- */
.hero {
    background: transparent;
    padding: 140px 0 100px;
    text-align: center;
    /* Subtle grid pattern overlay */
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-images {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 60px;
    perspective: 1000px;
}

.hero-img-box {
    width: 220px;
    height: 220px;
    aspect-ratio: 1 / 1;
    flex-shrink: 0;
    padding: 3px;
    background: var(--grad-primary);
    box-shadow: 0 10px 40px rgba(0, 114, 255, 0.3);
    transform: rotateY(0deg);
    transition: transform 0.5s ease;
    border-radius: 12px;
}

.hero-img-box:hover {
    transform: scale(1.05);
    z-index: 10;
    box-shadow: 0 10px 60px rgba(0, 242, 255, 0.5);
}

.hero-img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    border-radius: 9px;
    border: 1px solid #0b1a2b;
}

.hero-copy {
    font-family: var(--font-heading);
    font-size: 4.5rem;
    font-weight: 900;
    margin-bottom: 30px;
    line-height: 1.1;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, #fff, #c8e6ff 50%, #fff);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px rgba(43, 127, 255, 0.3);
}

.hero-sub {
    font-size: 1.3rem;
    margin-bottom: 50px;
    color: var(--text-sub);
    font-weight: 400;
    letter-spacing: 0.05em;
}

/* --- Concept Section --- */
.concept {
    background: rgba(11, 26, 43, 0.8);
    position: relative;
    padding: 120px 0;
    box-shadow: inset 0 0 100px rgba(0, 0, 0, 0.5);
}

.concept::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 100px;
    background: linear-gradient(to bottom, transparent, var(--vivid-blue));
}

.concept-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
}

.concept-content p {
    font-size: 1.25rem;
    line-height: 2.3;
    margin-bottom: 3rem;
    color: #e0e6ed;
    font-family: "Yu Mincho", "YuMincho", serif;
    border-left: 3px solid var(--vivid-blue-dark);
    padding-left: 35px;
    text-align: left;
    background: linear-gradient(90deg, rgba(43, 127, 255, 0.08), transparent);
}

/* --- Trust Section --- */
.trust {
    background: var(--bg-body);
}

.trust-grid {
    display: flex;
    justify-content: center;
    gap: 30px;
}

.trust-item {
    text-align: center;
    padding: 50px 30px;
    background: var(--bg-card);
    border-radius: var(--radius-soft);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: 0.3s;
    flex: 1;
    max-width: 300px;
}

.trust-item:hover {
    transform: translateY(-10px);
    border-color: var(--vivid-blue-dark);
    box-shadow: 0 20px 50px rgba(0, 114, 255, 0.2);
    background: #1a3250;
}

.trust-icon {
    font-size: 3rem;
    color: var(--vivid-blue);
    margin-bottom: 25px;
    text-shadow: 0 0 20px rgba(0, 242, 255, 0.3);
    display: block;
}

.trust-text {
    font-weight: 700;
    font-size: 1.1rem;
    color: #fff;
}

.philosophy {
    text-align: center;
    margin-top: 60px;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.2em;
    font-size: 0.9rem;
    text-transform: uppercase;
}

/* --- Instructors --- */
.instructors {
    background: var(--bg-light);
}

.instructor-list {
    display: flex;
    flex-direction: column;
    gap: 120px;
}

.instructor-card {
    display: flex;
    align-items: center;
    gap: 80px;
    padding: 50px;
    background: linear-gradient(135deg, rgba(22, 42, 69, 0.6) 0%, rgba(22, 42, 69, 0.3) 100%);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.instructor-img {
    flex: 0 0 320px;
    height: 420px;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.instructor-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.instructor-card:hover .instructor-img img {
    transform: scale(1.05);
}

.instructor-info {
    flex: 1;
}

.instructor-name {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 15px;
    letter-spacing: -0.02em;
    color: #fff;
}

.instructor-role {
    display: inline-block;
    color: var(--vivid-blue);
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 30px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border: 1px solid var(--vivid-blue-dark);
    padding: 5px 15px;
    border-radius: 4px;
    background: rgba(0, 114, 255, 0.1);
}

.instructor-desc {
    font-size: 1.05rem;
    color: var(--text-sub);
    margin-bottom: 30px;
    line-height: 1.9;
}

.instructor-points li {
    font-weight: 700;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    color: #d1d9e6;
}

.instructor-points li::before {
    content: '';
    display: block;
    width: 6px;
    height: 6px;
    background: var(--vivid-blue);
    margin-right: 15px;
    box-shadow: 0 0 10px var(--vivid-blue);
    transform: rotate(45deg);
}

.recommend-box {
    display: block;
    margin-top: 30px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(90deg, rgba(43, 127, 255, 0.2), transparent);
    padding: 12px 25px;
    border-left: 4px solid var(--vivid-blue);
}

@media (max-width: 800px) {
    .instructor-card {
        flex-direction: column;
        text-align: left;
        gap: 40px;
        padding: 30px;
    }

    .instructor-img {
        width: 100%;
        height: 400px;
    }
}

/* --- Before/After --- */
.before-after {
    background: #0f2027;
    /* Darker navy base */
    position: relative;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.ba-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.ba-item {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 40px;
    border-radius: 12px;
    transition: transform 0.4s ease;
    position: relative;
    overflow: hidden;
}

.ba-item:hover {
    transform: translateY(-5px);
    border-color: var(--vivid-blue);
    box-shadow: 0 15px 40px rgba(0, 114, 255, 0.15);
}

.ba-label {
    font-weight: 900;
    color: var(--text-muted);
    display: block;
    margin-bottom: 15px;
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.ba-text {
    font-size: 1.15rem;
    font-weight: 500;
    color: #fff;
}

.arrow-down {
    color: var(--vivid-blue-dark);
    margin: 25px 0;
    font-size: 1.2rem;
    opacity: 0.7;
}

.ba-result {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--vivid-blue);
    text-shadow: 0 0 20px rgba(0, 242, 255, 0.2);
}

/* --- Reasons --- */
.reasons {
    background: var(--bg-body);
}

.reasons-list {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.reasons-list li {
    font-size: 1.2rem;
    font-weight: 700;
    padding: 30px;
    background: var(--bg-card);
    border-radius: 8px;
    display: flex;
    align-items: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    color: #fff;
    transition: 0.3s;
}

.reasons-list li:hover {
    border-color: var(--vivid-blue);
    box-shadow: 0 0 25px rgba(0, 114, 255, 0.25);
    transform: translateX(10px);
    background: #1c3558;
}

.reasons-list li i {
    color: var(--vivid-blue);
    font-size: 1.5rem;
    margin-right: 25px;
    text-shadow: 0 0 15px rgba(0, 242, 255, 0.4);
}

/* --- Trial Lesson --- */
.trial {
    background: var(--bg-light);
    text-align: center;
}

.trial-content {
    background: var(--bg-card);
    max-width: 900px;
    margin: 0 auto;
    padding: 80px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4);
    position: relative;
    overflow: hidden;
}

.trial-content::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(0, 114, 255, 0.15), transparent 60%);
    z-index: 0;
}

.trial-content>* {
    position: relative;
    z-index: 1;
}

.trial-price {
    font-size: 4rem;
    font-weight: 900;
    color: #fff;
    margin: 20px 0 40px;
    letter-spacing: -0.05em;
    text-shadow: 0 0 40px rgba(0, 114, 255, 0.4);
}

.trial-steps {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.step-item {
    background: #0f2027;
    padding: 15px 30px;
    border-radius: 4px;
    font-weight: 700;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* --- Voices --- */
.voices {
    background: var(--bg-body);
}

.voice-card {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
}

.voice-card::before {
    content: '“';
    position: absolute;
    top: 20px;
    left: 20px;
    font-size: 4rem;
    color: rgba(255, 255, 255, 0.1);
    font-family: serif;
    line-height: 1;
}

.voice-text {
    font-style: italic;
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: #d1d9e6;
    position: relative;
    z-index: 1;
}

.voice-user {
    font-weight: 700;
    text-align: right;
    color: var(--vivid-blue);
    font-size: 0.9rem;
    letter-spacing: 0.05em;
}

/* --- FAQ --- */
.faq {
    background: var(--bg-light);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    margin-bottom: 20px;
    padding: 30px;
    border-radius: 8px;
    border-left: 4px solid var(--vivid-blue-dark);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-left-width: 4px;
}

.faq-q {
    font-weight: 700;
    margin-bottom: 15px;
    font-size: 1.1rem;
    color: #fff;
}

.faq-a {
    color: var(--text-sub);
}

/* --- Closing --- */
.closing {
    background: #08121a;
    padding: 140px 0;
    text-align: center;
    position: relative;
}

.closing h2 {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 30px;
    color: #fff;
    letter-spacing: -0.02em;
}

.closing p {
    color: #8899a6;
    font-size: 1.1rem;
    margin-bottom: 60px;
}

/* --- Mobile --- */
@media (max-width: 768px) {
    .hero-img-box {
        width: 140px;
        height: 140px;
    }

    .hero-copy {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .trial-price {
        font-size: 3rem;
    }

    .concept-content p {
        padding-left: 20px;
        font-size: 1rem;
    }
}