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

html {
    background: #f5c842;
    min-height: 100%;
}

body {
    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    line-height: 1.8;
    background: #f5c842;
    height: 100vh;
    height: 100dvh;
    color: #3a2a1a;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.bg-layer {
    display: none;
}

header {
    text-align: center;
    padding: 32px 20px 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
}

#title {
    font-size: 19px;
    font-weight: 800;
    letter-spacing: 4px;
    color: #3a2a1a;
    margin: 0;
}

.main-wrap {
    max-width: 680px;
    margin: 0 auto;
    width: 100%;
    flex: 1;
    overflow: hidden;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 24px rgba(58, 42, 26, 0.12);
}

main {
    padding: 12px 0;
    height: 100%;
    overflow: hidden;
}

.scroll-inner {
    padding: 36px 32px;
    padding-right: 20px;
    margin-right: 1px;
    height: 100%;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

h2 {
    font-size: 15px;
    font-weight: 700;
    color: #3a2a1a;
    letter-spacing: 2px;
    margin-top: 40px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(58, 42, 26, 0.12);
}

#top-title {
    margin-top: 0;
}

h3 {
    font-size: 13px;
    font-weight: 700;
    color: #5a4a3a;
    margin-top: 24px;
    letter-spacing: 1px;
}

p {
    font-size: 13px;
    line-height: 1.9;
    color: #555;
    margin-top: 10px;
}

a {
    color: #b07830;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s;
}

a:hover {
    color: #8a5a20;
    text-decoration: underline;
}

ul {
    list-style: none;
    margin-left: 0;
    margin-top: 10px;
}

ul li {
    font-size: 13px;
    color: #555;
    padding: 6px 0 6px 16px;
    position: relative;
}

ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #d4a55a;
}

footer {
    text-align: center;
    padding: 10px 20px;
    padding-bottom: calc(10px + env(safe-area-inset-bottom, 0px));
    font-size: 11px;
    color: rgba(58, 42, 26, 0.5);
    letter-spacing: 1px;
    flex-shrink: 0;
}

/* ===== Hamburger Button ===== */
.hamburger {
    position: fixed;
    top: 14px;
    left: 14px;
    z-index: 1000;
    width: 42px;
    height: 42px;
    background: rgba(50, 35, 20, 0.85);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.hamburger span {
    display: block;
    width: 20px;
    height: 2px;
    background: #fff;
    border-radius: 1px;
    transition: 0.3s;
}

/* ===== Side Menu ===== */
.menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.menu-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.side-menu {
    position: fixed;
    top: calc(-1 * env(safe-area-inset-top, 0px));
    bottom: calc(-1 * env(safe-area-inset-bottom, 0px));
    left: 0;
    width: 270px;
    background: #3a2a1a;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
}

.side-menu.active {
    transform: translateX(0);
}

.menu-close {
    position: absolute;
    top: 14px;
    left: 14px;
    width: 42px;
    height: 42px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 26px;
    color: #aaa;
    display: flex;
    align-items: center;
    justify-content: center;
}

.menu-close:hover {
    color: #fff;
}

.menu-links {
    margin-top: 68px;
    list-style: none;
}

.menu-links li {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 0;
}

.menu-links li:first-child {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.menu-links li::before {
    display: none;
}

.menu-links a {
    display: block;
    padding: 18px 24px;
    color: #d4a55a;
    text-decoration: none;
    font-size: 13px;
    letter-spacing: 3px;
    font-weight: 600;
    transition: background 0.2s;
}

.menu-links a:hover {
    background: rgba(255, 255, 255, 0.05);
    color: #d4a55a;
}

.menu-bottom {
    margin-top: auto;
    padding: 24px;
    color: rgba(255, 255, 255, 0.3);
    font-size: 11px;
}

/* Safari safe area */
@supports (padding-top: env(safe-area-inset-top)) {
    body {
        padding-left: env(safe-area-inset-left);
        padding-right: env(safe-area-inset-right);
    }

    header {
        padding-top: calc(32px + env(safe-area-inset-top));
    }

    footer {
        padding-bottom: calc(20px + env(safe-area-inset-bottom));
    }

    .hamburger {
        top: calc(14px + env(safe-area-inset-top));
    }

    .menu-close {
        top: calc(14px + env(safe-area-inset-top));
    }
}

/* SP */
@media (max-width: 600px) {
    header {
        padding: 44px 16px 20px;
        padding-top: calc(44px + env(safe-area-inset-top, 0px));
    }

    #title {
        font-size: 18px;
        letter-spacing: 3px;
    }

    .main-wrap {
        margin: 0 20px;
        width: auto;
        border-radius: 12px;
    }

    .scroll-inner {
        padding: 28px 20px;
        padding-right: 14px;
    }

    h2 {
        font-size: 14px;
        margin-top: 32px;
    }

    footer {
        font-size: 9px;
        padding-top: 12px;
        padding-left: 16px;
        padding-right: 16px;
        padding-bottom: calc(16px + env(safe-area-inset-bottom, 0px));
    }

    footer p {
        font-size: 9px;
    }
}