/* ===== 原点智学 Design System v2 — 暖墨色系 ===== */
/* Fonts loaded via <link> in HTML head for non-blocking render */

:root {
    /* Ink palette */
    --c-ink: #1A1A2E;
    --c-ink-light: #16213E;
    --c-ink-surface: #0F3460;
    --c-ink-border: rgba(15,52,96,0.4);

    /* Origin orange */
    --c-origin: #E94D35;
    --c-origin-soft: #FF6B4A;
    --c-origin-glow: rgba(233,77,53,0.15);

    /* Warm neutrals */
    --c-warm-white: #F5F0EB;
    --c-warm-gray: #B8B0A8;
    --c-warm-dim: #7A7067;

    /* Semantic */
    --c-success: #2D9F6F;
    --c-warning: #D4A843;
    --c-error: #C94040;

    /* Gradients */
    --grad-hero: linear-gradient(135deg, #1A1A2E 0%, #0F3460 100%);
    --grad-cta: linear-gradient(135deg, #E94D35, #FF6B4A);
    --grad-warm: linear-gradient(180deg, #1A1A2E, #16213E);
    --grad-section: linear-gradient(180deg, #16213E, #1A1A2E);

    /* Typography */
    --font-heading: "Noto Serif SC", serif;
    --font-body: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;

    /* Font sizes (mobile-first) */
    --fs-hero: 2rem;
    --fs-h2: 1.5rem;
    --fs-h3: 1.15rem;
    --fs-body: 1rem;
    --fs-small: 0.875rem;
    --fs-caption: 0.75rem;

    /* Spacing */
    --sp-xs: 4px;
    --sp-sm: 8px;
    --sp-md: 16px;
    --sp-lg: 24px;
    --sp-xl: 40px;
    --sp-2xl: 64px;
    --sp-section: clamp(64px, 10vw, 120px);

    /* Radius */
    --r-sm: 4px;
    --r-md: 8px;
    --r-lg: 12px;
    --r-pill: 100px;

    /* Shadows */
    --shadow-card: 0 1px 3px rgba(0,0,0,0.2);
    --shadow-hover: 0 4px 12px rgba(0,0,0,0.3);
    --shadow-cta: 0 4px 16px rgba(233,77,53,0.25);

    /* Legacy aliases — subpages inline styles reference these */
    --primary: var(--c-origin);
    --bg-dark: var(--c-ink-light);
}

/* ===== Reset ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--font-body);
    background: var(--c-ink);
    color: var(--c-warm-white);
    line-height: 1.75;
    overflow-x: hidden;
    font-size: var(--fs-body);
    -webkit-font-smoothing: antialiased;
}

/* ===== Utilities ===== */
.container { max-width: 1120px; margin: 0 auto; padding: 0 var(--sp-lg); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

h1, h2, h3 { font-family: var(--font-heading); line-height: 1.3; }
h2 { font-size: var(--fs-h2); font-weight: 800; margin-bottom: var(--sp-md); }
h3 { font-size: var(--fs-h3); font-weight: 700; }

.section-desc {
    color: var(--c-warm-gray);
    font-size: var(--fs-body);
    max-width: 560px;
    margin: 0 auto var(--sp-xl);
    text-align: center;
}

/* ===== Focus ===== */
*:focus-visible {
    outline: 2px solid var(--c-origin);
    outline-offset: 2px;
    border-radius: var(--r-sm);
}

/* ===== Subtle texture ===== */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        radial-gradient(ellipse at 20% 0%, rgba(15,52,96,0.15) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 100%, rgba(233,77,53,0.04) 0%, transparent 50%);
    z-index: 0;
    pointer-events: none;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: var(--sp-md) var(--sp-lg);
    background: rgba(26,26,46,0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(15,52,96,0.3);
    transition: background 0.3s, box-shadow 0.3s;
}
.navbar.scrolled {
    background: rgba(26,26,46,0.95);
    box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.nav-brand { display: flex; align-items: center; gap: var(--sp-sm); text-decoration: none; }
.brand-icon {
    font-size: 1.4rem;
    color: var(--c-origin);
    font-weight: 900;
}
.brand-text {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 900;
    color: var(--c-warm-white);
}
.nav-links { display: flex; gap: var(--sp-lg); }
.nav-links a {
    color: var(--c-warm-gray);
    text-decoration: none;
    font-size: var(--fs-small);
    font-weight: 500;
    transition: color 0.2s;
    position: relative;
}
.nav-links a:hover { color: var(--c-warm-white); }
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 0; right: 0;
    height: 2px;
    background: var(--c-origin);
    transform: scaleX(0);
    transition: transform 0.2s;
}
.nav-links a:hover::after { transform: scaleX(1); }
.nav-cta {
    background: var(--grad-cta);
    color: #fff;
    border: none;
    padding: 8px 20px;
    border-radius: var(--r-pill);
    font-size: var(--fs-small);
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}
.nav-cta:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-cta);
}
.hamburger {
    display: none;
    background: none;
    border: 1px solid var(--c-ink-border);
    color: var(--c-warm-white);
    font-size: 1.3rem;
    min-width: 44px;
    min-height: 44px;
    padding: 8px 12px;
    border-radius: var(--r-md);
    cursor: pointer;
}

/* Mobile nav */
.mobile-nav {
    display: none;
    position: fixed;
    top: 60px; left: 0; right: 0;
    background: rgba(26,26,46,0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: var(--sp-md) var(--sp-lg);
    z-index: 99;
    flex-direction: column;
    gap: var(--sp-sm);
    border-bottom: 1px solid var(--c-ink-border);
}
.mobile-nav.active { display: flex; }
.mobile-nav a {
    color: var(--c-warm-gray);
    text-decoration: none;
    padding: 12px 0;
    min-height: 44px;
    display: flex;
    align-items: center;
    font-size: var(--fs-body);
    border-bottom: 1px solid rgba(15,52,96,0.2);
    transition: color 0.2s;
}
.mobile-nav a:hover { color: var(--c-origin); }

@media (max-width: 767px) {
    .nav-links, .nav-cta { display: none; }
    .hamburger { display: block; }
}

/* ===== Hero ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px var(--sp-lg) var(--sp-2xl);
    position: relative;
    background: var(--grad-hero);
    overflow: hidden;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 120px;
    background: linear-gradient(to bottom, transparent, var(--c-ink));
    pointer-events: none;
}
.hero-content {
    position: relative;
    z-index: 1;
    max-width: 720px;
}
.hero-badge {
    display: inline-block;
    background: rgba(233,77,53,0.12);
    border: 1px solid rgba(233,77,53,0.25);
    color: var(--c-origin-soft);
    padding: 6px 16px;
    border-radius: var(--r-pill);
    font-size: var(--fs-small);
    font-weight: 500;
    margin-bottom: var(--sp-lg);
}
.hero h1 {
    font-family: var(--font-heading);
    font-size: var(--fs-hero);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: var(--sp-lg);
    color: var(--c-warm-white);
}
.hero h1 .accent { color: var(--c-origin); }
.hero-subtitle {
    font-size: 1.1rem;
    color: var(--c-warm-gray);
    margin-bottom: var(--sp-xl);
    line-height: 1.8;
}
.hero-subtitle strong { color: var(--c-warm-white); font-weight: 700; }
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-md);
    margin-bottom: var(--sp-xl);
}

/* Buttons */
.btn-primary {
    background: var(--grad-cta);
    color: #fff;
    border: none;
    padding: 14px 28px;
    border-radius: var(--r-md);
    font-size: var(--fs-body);
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    font-family: var(--font-body);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-cta);
}
.btn-secondary {
    background: transparent;
    color: var(--c-warm-white);
    border: 1px solid var(--c-ink-border);
    padding: 14px 28px;
    border-radius: var(--r-md);
    font-size: var(--fs-body);
    font-weight: 500;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    font-family: var(--font-body);
}
.btn-secondary:hover {
    border-color: var(--c-origin);
    background: rgba(233,77,53,0.05);
}

/* Hero metrics */
.hero-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-md);
    padding-top: var(--sp-lg);
    border-top: 1px solid rgba(15,52,96,0.3);
}
.metric { text-align: left; }
.metric-num {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--c-origin);
    display: block;
}
.metric-label {
    font-size: var(--fs-small);
    color: var(--c-warm-gray);
    line-height: 1.4;
}

@media (max-width: 767px) {
    .hero { padding: 100px var(--sp-lg) var(--sp-xl); min-height: auto; }
    .hero-metrics { grid-template-columns: 1fr; gap: var(--sp-sm); }
    .hero-actions { flex-direction: column; }
    .btn-primary, .btn-secondary { width: 100%; text-align: center; }
}

/* ===== Sections ===== */
section {
    padding: var(--sp-section) 0;
    position: relative;
    z-index: 1;
}
section:nth-child(even) { background: var(--grad-section); }
section h2 { text-align: center; }

/* ===== Problem / Paradox ===== */
.paradox-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-lg);
    margin-top: var(--sp-xl);
}
.paradox-card {
    background: rgba(22,33,62,0.6);
    border: 1px solid var(--c-ink-border);
    border-radius: var(--r-lg);
    padding: var(--sp-lg);
    transition: border-color 0.2s, transform 0.2s;
}
.paradox-card:hover {
    border-color: rgba(233,77,53,0.3);
    transform: translateY(-2px);
}
.paradox-card:first-child { grid-column: 1 / -1; }
.paradox-label {
    font-size: var(--fs-caption);
    color: var(--c-origin);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--sp-sm);
}
.paradox-card h3 { margin-bottom: var(--sp-sm); color: var(--c-warm-white); }
.paradox-card p { color: var(--c-warm-gray); font-size: var(--fs-small); }

@media (max-width: 767px) {
    .paradox-grid { grid-template-columns: 1fr; }
    .paradox-card:first-child { grid-column: auto; }
}

/* ===== Brand System ===== */
.brand-system {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--sp-xl);
    margin-top: var(--sp-xl);
}
.brand-center {
    text-align: center;
    padding: var(--sp-xl);
    background: rgba(233,77,53,0.05);
    border: 1px solid rgba(233,77,53,0.15);
    border-radius: var(--r-lg);
}
.brand-logo {
    font-size: 2.5rem;
    color: var(--c-origin);
    font-weight: 900;
    margin-bottom: var(--sp-sm);
}
.brand-center h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: var(--sp-sm);
}
.brand-tagline { color: var(--c-warm-gray); }
.brand-arms {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-lg);
}
.brand-arm {
    background: rgba(22,33,62,0.6);
    border: 1px solid var(--c-ink-border);
    border-radius: var(--r-lg);
    padding: var(--sp-lg);
}
.brand-arm-icon {
    font-size: 1.5rem;
    margin-bottom: var(--sp-sm);
}
.brand-arm h4 {
    font-family: var(--font-heading);
    font-size: var(--fs-h3);
    margin-bottom: var(--sp-sm);
    color: var(--c-warm-white);
}
.brand-arm p { color: var(--c-warm-gray); font-size: var(--fs-small); margin-bottom: var(--sp-md); }
.brand-arm ul {
    list-style: none;
    padding: 0;
}
.brand-arm li {
    color: var(--c-warm-gray);
    font-size: var(--fs-small);
    padding: var(--sp-xs) 0;
    padding-left: 16px;
    position: relative;
}
.brand-arm li::before {
    content: '·';
    position: absolute;
    left: 0;
    color: var(--c-origin);
    font-weight: 900;
}

@media (max-width: 767px) {
    .brand-arms { grid-template-columns: 1fr; }
}

/* ===== Four Pillars ===== */
.pillars {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-lg);
    margin-top: var(--sp-xl);
}
.pillar {
    background: rgba(22,33,62,0.5);
    border: 1px solid var(--c-ink-border);
    border-radius: var(--r-lg);
    padding: var(--sp-lg);
    border-left: 3px solid var(--c-origin);
    transition: transform 0.2s, box-shadow 0.2s;
}
.pillar:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}
.pillar-icon {
    font-size: 1.3rem;
    margin-bottom: var(--sp-sm);
}
.pillar h3 { margin-bottom: var(--sp-xs); }
.pillar-sub { color: var(--c-origin); font-size: var(--fs-small); font-weight: 500; margin-bottom: var(--sp-sm); }
.pillar p { color: var(--c-warm-gray); font-size: var(--fs-small); }

@media (max-width: 767px) {
    .pillars { grid-template-columns: 1fr; }
}

/* ===== Product Tiers ===== */
.tiers {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: var(--sp-lg);
    margin-top: var(--sp-xl);
}
.tier {
    background: rgba(22,33,62,0.6);
    border: 1px solid var(--c-ink-border);
    border-radius: var(--r-lg);
    padding: var(--sp-lg);
    transition: border-color 0.2s;
}
.tier:hover { border-color: rgba(233,77,53,0.3); }
.tier-number {
    font-family: var(--font-heading);
    font-size: var(--fs-caption);
    color: var(--c-origin);
    font-weight: 700;
    margin-bottom: var(--sp-sm);
}
.tier h3 { margin-bottom: var(--sp-xs); }
.tier-role {
    color: var(--c-warm-dim);
    font-size: var(--fs-caption);
    margin-bottom: var(--sp-md);
}
.tier p { color: var(--c-warm-gray); font-size: var(--fs-small); }

.tiers-row2 {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--sp-lg);
    margin-top: var(--sp-lg);
}

@media (max-width: 767px) {
    .tiers, .tiers-row2 { grid-template-columns: 1fr; }
}

/* (roadmap removed — investor content) */

/* ===== CTA Section ===== */
.cta-section {
    text-align: center;
    background: var(--grad-hero);
    padding: var(--sp-section) var(--sp-lg);
}
.cta-section h2 { margin-bottom: var(--sp-md); }
.cta-section p { color: var(--c-warm-gray); margin-bottom: var(--sp-xl); max-width: 560px; margin-left: auto; margin-right: auto; }
.cta-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--sp-md);
}

/* ===== Footer ===== */
.site-footer {
    background: #111127;
    padding: var(--sp-xl) var(--sp-lg);
    border-top: 1px solid var(--c-ink-border);
}
.footer-inner {
    max-width: 1120px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--sp-xl);
}
.footer-brand h3 {
    font-family: var(--font-heading);
    color: var(--c-warm-white);
    margin-bottom: var(--sp-sm);
}
.footer-brand p { color: var(--c-warm-dim); font-size: var(--fs-small); }
.footer-links h4 {
    color: var(--c-warm-gray);
    font-size: var(--fs-small);
    font-weight: 700;
    margin-bottom: var(--sp-md);
}
.footer-links a {
    display: block;
    color: var(--c-warm-dim);
    text-decoration: none;
    font-size: var(--fs-small);
    padding: var(--sp-xs) 0;
    transition: color 0.2s;
}
.footer-links a:hover { color: var(--c-origin); }
.footer-bottom {
    max-width: 1120px;
    margin: var(--sp-lg) auto 0;
    padding-top: var(--sp-lg);
    border-top: 1px solid rgba(15,52,96,0.2);
    display: flex;
    justify-content: space-between;
    color: var(--c-warm-dim);
    font-size: var(--fs-caption);
}

@media (max-width: 767px) {
    .footer-inner { grid-template-columns: 1fr; gap: var(--sp-lg); }
    .footer-bottom { flex-direction: column; gap: var(--sp-sm); }
}

/* ===== Scroll reveal ===== */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Desktop scale ===== */
@media (min-width: 768px) {
    :root {
        --fs-hero: 3.2rem;
        --fs-h2: 2rem;
        --fs-h3: 1.35rem;
        --fs-body: 1.05rem;
    }
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .reveal { opacity: 1; transform: none; }
}

/* ===== Product Matrix ===== */
.matrix-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-lg);
    margin-top: var(--sp-xl);
}
.matrix-card {
    background: rgba(22,33,62,0.6);
    border: 1px solid var(--c-ink-border);
    border-radius: var(--r-lg);
    padding: var(--sp-lg);
    transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
}
.matrix-card:hover {
    border-color: rgba(233,77,53,0.35);
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}
.matrix-card.coming-soon {
    opacity: 0.7;
}
.matrix-card.coming-soon:hover {
    opacity: 0.85;
    transform: none;
}
.matrix-icon {
    font-size: 1.8rem;
    margin-bottom: var(--sp-sm);
}
.matrix-card h3 {
    font-family: var(--font-heading);
    font-size: var(--fs-h3);
    color: var(--c-warm-white);
    margin-bottom: var(--sp-xs);
}
.matrix-tagline {
    color: var(--c-origin-soft);
    font-size: var(--fs-small);
    font-weight: 500;
    margin-bottom: var(--sp-sm);
}
.matrix-card > p {
    color: var(--c-warm-gray);
    font-size: var(--fs-small);
    margin-bottom: var(--sp-md);
    flex: 1;
}
.matrix-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-xs);
    margin-bottom: var(--sp-md);
}
.matrix-tag {
    display: inline-block;
    background: rgba(15,52,96,0.5);
    color: var(--c-warm-gray);
    padding: 2px 10px;
    border-radius: var(--r-pill);
    font-size: var(--fs-caption);
    font-weight: 500;
}
.matrix-tag.free {
    background: rgba(45,159,111,0.15);
    color: var(--c-success);
}
.matrix-cta {
    display: inline-block;
    background: var(--grad-cta);
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: var(--r-md);
    font-size: var(--fs-small);
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
    font-family: var(--font-body);
    align-self: flex-start;
}
.matrix-cta:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-cta);
}
.matrix-cta.coming {
    background: rgba(15,52,96,0.5);
    color: var(--c-warm-dim);
    cursor: default;
    pointer-events: none;
}
.matrix-coming-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--sp-sm);
}
.matrix-coming-list li {
    display: flex;
    gap: var(--sp-sm);
    align-items: baseline;
    color: var(--c-warm-gray);
    font-size: var(--fs-small);
}
.matrix-coming-list li strong {
    color: var(--c-warm-white);
    white-space: nowrap;
}

/* StudyPal referral block */
.studypal-referral {
    background: rgba(233,77,53,0.04);
    border: 1px solid rgba(233,77,53,0.15);
    border-radius: var(--r-lg);
    padding: var(--sp-xl);
    margin-top: var(--sp-xl);
    text-align: center;
}
.studypal-referral h3 {
    font-family: var(--font-heading);
    color: var(--c-warm-white);
    margin-bottom: var(--sp-sm);
}
.studypal-referral > p {
    color: var(--c-warm-gray);
    font-size: var(--fs-small);
    margin-bottom: var(--sp-lg);
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}
.studypal-features {
    display: flex;
    justify-content: center;
    gap: var(--sp-lg);
    flex-wrap: wrap;
    margin-bottom: var(--sp-lg);
}
.studypal-feat {
    text-align: center;
    max-width: 180px;
}
.studypal-feat-icon {
    font-size: 1.5rem;
    margin-bottom: var(--sp-xs);
}
.studypal-feat strong {
    display: block;
    color: var(--c-warm-white);
    font-size: var(--fs-small);
    margin-bottom: var(--sp-xs);
}
.studypal-feat span {
    color: var(--c-warm-dim);
    font-size: var(--fs-caption);
}

/* Nav dropdown */
.nav-dropdown {
    position: relative;
}
.nav-dropdown > a {
    cursor: pointer;
}
.nav-dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-top: 12px;
    background: rgba(26,26,46,0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--c-ink-border);
    border-radius: var(--r-md);
    padding: var(--sp-sm) 0;
    min-width: 200px;
    z-index: 110;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}
.nav-dropdown:hover .nav-dropdown-menu {
    display: block;
}
.nav-dropdown-menu a {
    display: block;
    padding: 10px 20px;
    color: var(--c-warm-gray);
    text-decoration: none;
    font-size: var(--fs-small);
    transition: color 0.2s, background 0.2s;
    white-space: nowrap;
}
.nav-dropdown-menu a:hover {
    color: var(--c-origin);
    background: rgba(233,77,53,0.05);
}
.nav-dropdown-menu a::after {
    display: none;
}

@media (max-width: 767px) {
    .matrix-grid { grid-template-columns: 1fr; }
    .studypal-features { flex-direction: column; align-items: center; }
}

/* (market-grid, diff-list, brand-story removed — investor content) */

/* ===== Contact/Subscribe ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-xl);
    margin-top: var(--sp-xl);
}
.contact-info { color: var(--c-warm-gray); }
.contact-info h3 { color: var(--c-warm-white); margin-bottom: var(--sp-md); }
.contact-item {
    display: flex;
    align-items: center;
    gap: var(--sp-sm);
    padding: var(--sp-sm) 0;
    font-size: var(--fs-small);
}
.subscribe-form {
    background: rgba(22,33,62,0.6);
    border: 1px solid var(--c-ink-border);
    border-radius: var(--r-lg);
    padding: var(--sp-lg);
}
.subscribe-form h3 { color: var(--c-warm-white); margin-bottom: var(--sp-md); }
.subscribe-form input {
    width: 100%;
    padding: 12px 16px;
    background: rgba(15,52,96,0.4);
    border: 1px solid var(--c-ink-border);
    border-radius: var(--r-md);
    color: var(--c-warm-white);
    font-size: var(--fs-body);
    font-family: var(--font-body);
    margin-bottom: var(--sp-md);
    transition: border-color 0.2s;
}
.subscribe-form input:focus {
    border-color: var(--c-origin);
    outline: none;
    box-shadow: 0 0 0 3px var(--c-origin-glow);
}
.subscribe-form input::placeholder { color: var(--c-warm-dim); }
.subscribe-form button {
    width: 100%;
    background: var(--grad-cta);
    color: #fff;
    border: none;
    padding: 12px;
    border-radius: var(--r-md);
    font-size: var(--fs-body);
    font-weight: 700;
    cursor: pointer;
    font-family: var(--font-body);
    transition: transform 0.2s, box-shadow 0.2s;
}
.subscribe-form button:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-cta);
}
.form-trust {
    text-align: center;
    color: var(--c-warm-dim);
    font-size: var(--fs-caption);
    margin-top: var(--sp-sm);
    line-height: 1.5;
}
.field-error {
    display: block;
    color: var(--c-error);
    font-size: var(--fs-caption);
    margin-top: calc(-1 * var(--sp-sm));
    margin-bottom: var(--sp-sm);
}

@media (max-width: 767px) {
    .contact-grid { grid-template-columns: 1fr; }
}

/* ===== Showcase / Student Output ===== */
.showcase-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-lg);
    margin-top: var(--sp-xl);
}
.showcase-card {
    background: rgba(22,33,62,0.5);
    border: 1px solid var(--c-ink-border);
    border-radius: var(--r-lg);
    padding: var(--sp-lg);
    transition: border-color 0.2s, transform 0.2s;
}
.showcase-card:hover {
    border-color: rgba(233,77,53,0.3);
    transform: translateY(-2px);
}
.showcase-type {
    display: inline-block;
    background: var(--c-origin-glow);
    color: var(--c-origin);
    padding: 3px 10px;
    border-radius: var(--r-pill);
    font-size: var(--fs-caption);
    font-weight: 700;
    margin-bottom: var(--sp-sm);
}
.showcase-card h3 {
    font-family: var(--font-heading);
    margin-bottom: var(--sp-sm);
    color: var(--c-warm-white);
    font-size: var(--fs-h3);
}
.showcase-card p { color: var(--c-warm-gray); font-size: var(--fs-small); margin-bottom: var(--sp-sm); }
.showcase-meta {
    color: var(--c-warm-dim);
    font-size: var(--fs-caption);
    border-top: 1px solid rgba(15,52,96,0.3);
    padding-top: var(--sp-sm);
    margin-top: var(--sp-sm);
}

@media (max-width: 767px) {
    .showcase-grid { grid-template-columns: 1fr; }
}

/* ===== Testimonials ===== */
.testimonials {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--sp-lg);
    margin-top: var(--sp-xl);
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}
.testimonial {
    background: rgba(22,33,62,0.5);
    border: 1px solid var(--c-ink-border);
    border-radius: var(--r-lg);
    padding: var(--sp-lg);
    border-left: 3px solid var(--c-origin);
}
.testimonial-text {
    color: var(--c-warm-gray);
    font-style: italic;
    line-height: 1.8;
    margin-bottom: var(--sp-md);
    font-size: var(--fs-body);
}
.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--sp-md);
}
.testimonial-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--grad-cta);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: var(--fs-body);
    flex-shrink: 0;
}
.testimonial-name { color: var(--c-warm-white); font-weight: 700; font-size: var(--fs-small); }
.testimonial-info { color: var(--c-warm-dim); font-size: var(--fs-caption); }

/* ===== Founder ===== */
.founder-section {
    max-width: 720px;
    margin: 0 auto;
}
.founder-label {
    font-size: var(--fs-caption);
    color: var(--c-origin);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--sp-sm);
}
.founder-content h2 { margin-bottom: var(--sp-lg); }
.founder-content p {
    color: var(--c-warm-gray);
    margin-bottom: var(--sp-md);
    line-height: 1.9;
}
.founder-content strong { color: var(--c-warm-white); }
.founder-sig {
    margin-top: var(--sp-lg);
    padding-top: var(--sp-lg);
    border-top: 1px solid rgba(15,52,96,0.3);
    display: flex;
    flex-direction: column;
    gap: var(--sp-xs);
}
.founder-sig strong { color: var(--c-warm-white); font-size: var(--fs-h3); }
.founder-sig span { color: var(--c-warm-dim); font-size: var(--fs-small); }

/* ===== Trust Grid ===== */
.trust-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-lg);
    margin-top: var(--sp-xl);
}
.trust-item {
    text-align: center;
    padding: var(--sp-lg);
    background: rgba(22,33,62,0.5);
    border: 1px solid var(--c-ink-border);
    border-radius: var(--r-lg);
}
.trust-num {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 900;
    color: var(--c-origin);
    margin-bottom: var(--sp-sm);
}
.trust-desc {
    color: var(--c-warm-gray);
    font-size: var(--fs-small);
    line-height: 1.7;
}

@media (max-width: 767px) {
    .trust-grid { grid-template-columns: 1fr; }
}

/* ===== Share Bar ===== */
.share-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 900;
    background: rgba(26,26,46,0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-top: 1px solid var(--c-ink-border);
    padding: var(--sp-sm) var(--sp-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--sp-sm);
    transform: translateY(100%);
    transition: transform 0.4s ease-out;
}
.share-bar.visible {
    transform: translateY(0);
}
.share-bar-label {
    color: var(--c-warm-dim);
    font-size: var(--fs-caption);
    margin-right: var(--sp-sm);
    white-space: nowrap;
}
.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border: 1px solid var(--c-ink-border);
    border-radius: var(--r-pill);
    background: transparent;
    color: var(--c-warm-white);
    font-size: var(--fs-caption);
    cursor: pointer;
    transition: all 0.2s;
    font-family: var(--font-body);
    white-space: nowrap;
}
.share-btn:hover {
    background: var(--c-origin);
    border-color: var(--c-origin);
    color: #fff;
}
.share-btn-icon {
    font-size: 1rem;
    line-height: 1;
}

/* Share Toast */
.share-toast {
    position: fixed;
    bottom: 72px;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--c-success);
    color: #fff;
    padding: 10px 24px;
    border-radius: var(--r-pill);
    font-size: var(--fs-small);
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.3s, transform 0.3s;
    pointer-events: none;
    white-space: nowrap;
}
.share-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Give footer extra bottom padding to not hide behind share bar */
.site-footer {
    padding-bottom: 72px !important;
}

@media (max-width: 767px) {
    .share-bar { gap: 4px; padding: var(--sp-xs) var(--sp-sm); }
    .share-bar-label { display: none; }
    .share-btn { padding: 6px 10px; font-size: 11px; }
}