:root {
    --color-text: #1a1a1c;
    --color-text-light: #4a4a52;
    --color-text-lighter: #6a6a72;
    --color-text-lightest: #9898a0;
    --color-background-body: #fafaf8;
    --color-background-header: rgba(255, 255, 255, 0.88);
    --color-background-footer: #111827;
    --color-background-faq-answer: #f7f7f5;
    --color-background-modal: rgba(0, 0, 0, 0.6);
    --color-background-modal-content: #fff;
    --color-background-go-top: rgba(0, 0, 0, 0.5);
    --color-background-go-top-hover: rgba(0, 0, 0, 0.8);
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-glow: rgba(37, 99, 235, 0.2);
    --color-secondary: #1e40af;
    --color-accent: #f4c83b;
    --color-accent-soft: rgba(244, 200, 59, 0.12);
    --color-dark: #1e293b;
    --color-light: #fff;
    --color-border-light: #eee;
    --color-border-medium: #ddd;
    --color-border-dark: #ccc;
    --color-border-arrow: #8e8e8e;
    --color-blue: #2563eb;
    --color-text-dim: #6a6a72;
    --color-bg-surface: #f3f3f1;
    --shadow-color-light: rgba(0, 0, 0, 0.06);
    --shadow-color-medium: rgba(0, 0, 0, 0.1);
    --shadow-color-dark: rgba(0, 0, 0, 0.2);
    --font-family-base: 'Noto Sans JP', sans-serif;
    --font-family-heading: 'Noto Sans JP', sans-serif;
    --font-display: 'Space Grotesk', 'Noto Sans JP', sans-serif;
    --font-size-base: 16px;
    --font-size-xs: 0.75rem;
    --font-size-s: 0.85rem;
    --font-size-sm: 0.9rem;
    --font-size-m: 1rem;
    --font-size-md: 1.1rem;
    --font-size-lg: 1.2rem;
    --font-size-xl: 1.3rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.8rem;
    --font-size-4xl: 2rem;
    --font-size-5xl: 2.5rem;
    --font-size-6xl: 3rem;
    --font-size-7xl: 3.5rem;
    --line-height-base: 1.75;
    --line-height-heading: 1.35;
    --line-height-tight: 1.2;
    --line-height-cta: 1;
    --space-xs: 0.25em;
    --space-s: 0.5em;
    --space-m: 0.8em;
    --space-l: 1em;
    --space-xl: 1.5em;
    --space-2xl: 2em;
    --space-3xl: 3em;
    --space-4xl: 4em;
    --padding-inner-horizontal: 40px;
    --padding-inner-horizontal-mobile: 20px;
    --border-radius-xs: 6px;
    --border-radius-s: 8px;
    --border-radius-m: 12px;
    --border-radius-l: 14px;
    --border-radius-xl: 16px;
    --border-radius-round: 50%;
    --border-radius-btn: 2em;
    --transition-duration: 0.25s;
    --transition-timing-function: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-base: var(--transition-duration) var(--transition-timing-function);
    --z-index-background-elements: -1;
    --z-index-content-overlap: 1;
    --z-index-sticky-header: 1000;
    --z-index-floating-btn: 998;
    --z-index-go-top: 999;
    --z-index-modal: 2000;
    --z-index-hamburger-panel: 1001;
    --z-index-hamburger-button: 1002;
    --header-height-current: 70px;
}

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

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-family-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-background-body);
    overflow-x: hidden;
    letter-spacing: 0.02em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

body.no-scroll {
    overflow: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

a {
    text-decoration: none;
    color: var(--color-primary);
    transition: opacity var(--transition-base), color var(--transition-base), background-color var(--transition-base);
}

a.hover:hover {
    opacity: 0.7;
    color: var(--color-dark);
}

/* Common Inner */
.common-inner {
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--padding-inner-horizontal);
    padding-right: var(--padding-inner-horizontal);
}

@media (max-width: 768px) {
    .common-inner {
        padding-left: var(--padding-inner-horizontal-mobile);
        padding-right: var(--padding-inner-horizontal-mobile);
    }
}

/* Background Patterns */
main.contents-body {
    position: relative;
    padding-top: 1em;
    padding-bottom: 3em;
}

/* Header */
#header {
    background-color: var(--color-background-header);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 0.5em 0;
    position: sticky;
    top: 0;
    z-index: var(--z-index-sticky-header);
    transition: box-shadow var(--transition-base), height var(--transition-base);
    height: var(--header-height-current);
}

#header.scrolled {
    box-shadow: 0 1px 12px var(--shadow-color-light);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background-color: var(--color-dark);
    color: var(--color-light);
    font-size: 11px;
    font-weight: 900;
    border-radius: var(--border-radius-l);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-text {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-dark);
}

#gnav .nav {
    display: flex;
    gap: 1.5em;
}

#gnav .nav li a {
    color: var(--color-dark);
    padding: 0.5em 0.4em;
    font-size: 1.125rem;
    white-space: nowrap;
}

#gnav .nav li a.active {
    color: var(--color-primary);
    font-weight: bold;
}

.hamburger-menu {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: var(--z-index-hamburger-button);
    width: 44px;
    height: 44px;
    position: relative;
}

.hamburger-menu span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-text);
    margin: 5px auto;
    transition: all var(--transition-base);
    border-radius: 2px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.hamburger-menu span:nth-child(1) { top: 12px; }
.hamburger-menu span:nth-child(2) { top: 20px; }
.hamburger-menu span:nth-child(3) { top: 28px; }

.hamburger-menu.active span:nth-child(1) { top: 20px; transform: translateX(-50%) rotate(45deg); }
.hamburger-menu.active span:nth-child(2) { opacity: 0; }
.hamburger-menu.active span:nth-child(3) { top: 20px; transform: translateX(-50%) rotate(-45deg); }

@media (max-width: 960px) {
    :root { --header-height-current: 56px; }
    #header { height: var(--header-height-current); min-height: 48px; padding: 0.35em 0; }
    .logo-icon { width: 28px; height: 28px; font-size: 10px; }
    .logo-text { font-size: 1rem; }
    .hamburger-menu { display: block; }

    #gnav {
        position: fixed; top: 0; left: -100%;
        width: min(80vw, 300px); height: 100vh;
        background-color: var(--color-background-header);
        box-shadow: 2px 0 10px var(--shadow-color-medium);
        z-index: var(--z-index-hamburger-panel);
        transition: left var(--transition-duration) var(--transition-timing-function);
        overflow-y: auto;
        padding-top: var(--header-height-current);
    }
    #gnav.active { left: 0; }
    #gnav .nav-wrap { width: 100%; padding: 0; }
    #gnav .nav { flex-direction: column; gap: 0; align-items: stretch; padding: 1em 0 0 0; }
    #gnav .nav li { width: 100%; }
    #gnav .nav li a {
        display: block; padding: 0.8em 1.5em;
        font-size: var(--font-size-m); color: var(--color-text);
        border-bottom: 1px solid var(--color-border-light);
        white-space: normal; font-weight: normal;
    }
    #gnav .nav li:last-child a { border-bottom: none; }
    #gnav .nav li a.active { color: var(--color-primary); font-weight: bold; background-color: rgba(37, 99, 235, 0.05); }
    #gnav .nav li a:hover { background-color: #f5f5f5; opacity: 1; color: var(--color-primary); }
}

@media (max-width: 640px) {
    :root { --header-height-current: 48px; }
    #header { height: var(--header-height-current); }
    .logo-icon { width: 28px; height: 28px; font-size: 9px; }
    .logo-text { font-size: 1rem; }
}

/* Main Image Section */
.mainimg {
    padding: calc(4em + var(--header-height-current)) 0 2em;
    position: relative;
    text-align: center;
    overflow: hidden;
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 50%, #1e293b 100%);
}

.mainimg::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 50% 60% at 30% 40%, rgba(37, 99, 235, 0.15) 0%, transparent 70%),
        radial-gradient(ellipse 40% 50% at 80% 60%, rgba(244, 200, 59, 0.08) 0%, transparent 60%);
    pointer-events: none;
}

.mainimg-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2em;
}

.main-title {
    font-weight: 700;
    text-align: left;
    color: var(--color-light);
    position: relative;
    z-index: 1;
}

.main-title * { text-align: left; }

.main-title__sub {
    font-family: var(--font-display);
    background-color: var(--color-primary);
    color: var(--color-light);
    padding: 0.5em 1.2em;
    border-radius: var(--border-radius-s);
    font-size: 1rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 0.5em;
    letter-spacing: 1.5px;
}

.main-title__top {
    font-size: 2.5rem;
    line-height: var(--line-height-tight);
}

.main-title__top span { font-size: 2rem; }

.main-title h2 {
    font-size: 3.5rem;
    line-height: var(--line-height-tight);
    margin-top: 0.2em;
    letter-spacing: 0.03em;
}

.main-title h2 span { display: block; }

.mainimg figure img { max-width: 500px; }

@media (max-width: 960px) {
    .mainimg-inner { flex-direction: column; text-align: center; }
    .main-title { text-align: center; }
    .main-title * { text-align: center; }
    .main-title h2 span { display: inline-block; }
    .main-title__sub { font-size: 1rem; }
    .main-title__top { font-size: 2rem; }
    .main-title__top span { font-size: 1.5rem; }
    .main-title h2 { font-size: 2.8rem; }
}

@media (max-width: 640px) {
    .mainimg { padding: 4em 0 2em; }
    .main-title__top { font-size: 1.8rem; }
    .main-title__top span { font-size: 1.3rem; }
    .main-title h2 { font-size: 2.2rem; }
}

/* General Section Styling */
section { padding: 2.5em 0; }
section:first-child { padding-top: 1em; }

section h2 {
    font-size: 2.5rem;
    line-height: var(--line-height-heading);
    text-align: center;
    margin-bottom: 0.8em;
    font-weight: 900;
    letter-spacing: 0.03em;
}

section h2 span { display: inline-block; }

@media (max-width: 768px) {
    section { padding: 1.5em 0; }
    section:first-child { padding-top: 0.5em; }
    section h2 { font-size: 1.8rem; margin-bottom: 0.6em; }
}

/* Gridbox System */
.gridbox { display: grid; gap: 1.3em; }
.gridbox-col4 { grid-template-columns: repeat(4, 1fr); }
.gridbox-col3 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }

@media (min-width: 769px) and (max-width: 960px) {
    .gridbox-col4 { grid-template-columns: repeat(2, 1fr); }
    .gridbox-col3.point, .gridbox-col3.tools { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 961px) {
    .gridbox-col4.worry { grid-template-columns: repeat(4, 1fr); }
    .gridbox-col3 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .gridbox { gap: 1em; }
    .gridbox-col4, .gridbox-col3 { grid-template-columns: 1fr !important; }
}

.gridbox-item,
.gridbox-border {
    background-color: var(--color-light);
    border-radius: var(--border-radius-m);
    padding: 1.5em;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.gridbox-border { border: 2px solid var(--color-dark); }

.gridbox-item:hover,
.gridbox-border:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--shadow-color-light);
}

.worry .gridbox-item {
    display: flex; flex-direction: column;
    align-items: center; text-align: center;
    background-color: transparent; padding: 0;
}

.worry .gridbox-item .worry-icon {
    width: 80px; height: 80px;
    background: var(--color-accent);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; margin-bottom: 1em;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15);
}

.worry .gridbox-item .worry-icon i {
    font-size: 2.5rem;
    color: var(--color-primary);
}

.worry .gridbox-border {
    width: 100%; flex-grow: 1;
    display: flex; flex-direction: column;
    border: 2px solid var(--color-dark);
    padding: 1.5em;
}

.worry .gridbox-border h3 { margin-bottom: 0.8em; }
.worry .gridbox-border ul { text-align: left; margin-top: auto; }

.gridbox h3 {
    font-size: 1.5rem; font-weight: 700;
    line-height: var(--line-height-heading); margin-bottom: 0.5em;
}

.gridbox h3 span { display: block; }

.gridbox h4 { font-size: 1.1rem; font-weight: bold; margin-bottom: 0.8em; }
.gridbox h4 span { display: block; }

.gridbox ul { padding-left: 0; }

.gridbox ul li {
    margin-bottom: 0.5em; padding-left: 1.2em;
    position: relative; line-height: 1.5;
}

.gridbox ul li::before {
    content: "\25CF"; position: absolute; left: 0;
    font-size: 0.8em; color: var(--color-primary);
}

/* #about (worry) */
#about h2 span:first-child { margin-right: 0.2em; }

@media (max-width: 768px) {
    .worry .gridbox-item {
        flex-direction: row; align-items: center; gap: 1em;
        padding: 1em; border: 1px solid var(--color-border-dark);
        background-color: var(--color-background-header); border-radius: var(--border-radius-m);
    }
    .worry .gridbox-item .worry-icon {
        margin-bottom: 0; flex-shrink: 0;
        width: 60px; height: 60px;
    }
    .worry .gridbox-item .worry-icon i { font-size: 1.3rem; }
    .worry .gridbox-border { border: none; text-align: left; background-color: transparent; padding: 0; }
    .worry .gridbox-border h3 { font-size: 1.2rem; margin-bottom: 0.5em; }
    .worry .gridbox-border ul li { font-size: 0.9rem; }
}

/* #can */
#can {
    text-align: center; margin-top: 2em;
}

#can h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5em;
}

#can h2 .big { font-size: 2.8rem; }
.text-color-blue { color: var(--color-secondary); }
.text-color-green { color: var(--color-primary); }
#can .gridbox-border { text-align: left; }

@media (max-width: 768px) {
    #can h2 { font-size: 1.5rem; line-height: var(--line-height-tight); }
    #can h2 .big { font-size: 2.2rem; }
    #can .gridbox .gridbox-border { padding: 1em; }
    #can .gridbox h3 { font-size: 1.3rem; margin-bottom: 0.5em; }
    #can .gridbox h4 { font-size: 1rem; margin-bottom: 0.5em; }
    #can .gridbox ul li { font-size: 0.9rem; }
}

/* #point */
#point h2 .big { font-size: 3rem; }

#point .gridbox { gap: 1.5em; margin-top: 1.5em; }

#point .gridbox-item {
    display: flex; flex-direction: column;
    align-items: center; text-align: center;
    background-color: var(--color-light);
    padding: 1.2em 1.5em 1.2em; border-radius: var(--border-radius-m);
    box-shadow: 0 2px 8px var(--shadow-color-light);
}

#point .gridbox-item > i {
    font-family: var(--font-display);
    font-style: normal; font-weight: 700;
    font-size: 1.6rem; color: var(--color-light);
    background-color: var(--color-accent);
    width: 2.2em; height: 2.2em;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 0.4em;
    box-shadow: 0 4px 12px rgba(244, 200, 59, 0.3); line-height: 1;
}

#point .gridbox-item > div:nth-child(2) { margin-top: 0; margin-bottom: 0.6em; position: relative; z-index: 1; }
#point .gridbox-item > div:nth-child(2) img { border-radius: 1em; width: 100%; margin-bottom: 1em; }
#point .gridbox-item h3 { margin-bottom: 0.8em; }
#point .gridbox-item ul { text-align: left; margin-top: 0; flex-grow: 1; }

#point .gridbox-item ul li {
    border-bottom: 1px dashed rgba(0, 0, 0, 0.2);
    padding-bottom: 0.8em; margin-bottom: 0.8em;
}

#point .gridbox-item ul li:last-child { border-bottom: none; margin-bottom: 0; }

.link_btn {
    display: inline-block; background-color: #fff;
    border: 2px solid #000; color: #000;
    padding: 0.8em 1.5em; border-radius: 2em;
    text-align: center; font-weight: bold; margin-top: 1em;
    cursor: pointer;
    transition: all var(--transition-base);
}

.link_btn.hover:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff; opacity: 1;
    box-shadow: 0 4px 16px var(--color-primary-glow);
    transform: translateY(-1px);
}

.link_btn:active { transform: translateY(0); }

#point .link_btn { width: 80%; max-width: 250px; }

@media (max-width: 768px) {
    #point h2 .big { font-size: 2.2rem; }
    #point .gridbox { gap: 1.5em; margin-top: 1.5em; }
    #point .gridbox-item { padding: 1.5em 1em 1em; }
    #point .gridbox-item > i { font-size: 2.2rem; width: 2.2em; height: 2.2em; }
    #point .gridbox-item h3 { font-size: 1.2rem; margin-bottom: 0.5em; text-align: center; }
    #point .gridbox-item ul { margin-top: 0.5em; text-align: left; }
    #point .gridbox-item ul li { padding-bottom: 0.5em; margin-bottom: 0.5em; line-height: 1.4; font-size: 0.9rem; }
    #point .link_btn { width: auto; align-self: center; margin-top: 1em; padding: 0.7em 1.2em; font-size: 1rem; }
}

/* #flow */
#flow h2 { margin-bottom: 1.5em; }

#flow > p {
    display: none; font-size: 1.3rem; font-weight: 700;
    line-height: 1.4; text-align: center; margin-bottom: 2em;
}

#flow > p span { display: block; }

.gridbox.flow-horizontal {
    display: flex; flex-wrap: nowrap;
    justify-content: space-between; gap: 20px;
    position: relative; align-items: stretch; margin-top: 2em;
}

.gridbox.flow-horizontal > .gridbox-item {
    display: flex; flex-direction: column;
    align-items: center; text-align: center;
    flex: 1; min-width: 140px;
    background-color: var(--color-light);
    padding: 1.2em 1em; border-radius: var(--border-radius-m);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.flow-item-visual {
    width: 56px; height: 56px;
    background-color: var(--color-accent);
    border-radius: var(--border-radius-round);
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    color: var(--color-dark); font-weight: 700;
    flex-shrink: 0; margin-bottom: 0.6em;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.flow-item-visual .flow-item-step { font-size: 0.85rem; font-weight: bold; line-height: 1; }

.flow-item {
    width: 100%; display: flex; flex-direction: column;
    align-items: center; text-align: center;
    padding: 0; background-color: transparent;
    box-shadow: none; border-radius: 0;
    margin-top: 0; flex-grow: 1; justify-content: space-between;
}

.flow-item > div:first-child img { border-radius: 1em; width: 100%; margin-bottom: 1em; }
.flow-item dl { margin-top: 0; flex-grow: 1; width: 100%; }
.flow-item dt { font-size: 1.3rem; font-weight: 700; margin-bottom: 0.8em; }
.flow-item dd ul { text-align: left; }

.flow-arrow {
    text-align: center; margin: 0 15px;
    color: var(--color-dark); font-size: 2rem; line-height: 1;
    flex-shrink: 0; align-self: center;
}

.sp-only { display: none; }

@media (max-width: 1024px) {
    .gridbox.flow-horizontal { flex-wrap: wrap; justify-content: center; gap: 1.5em 15px; margin-top: 2em; }
    .gridbox.flow-horizontal > .gridbox-item { flex-basis: calc(50% - 10px); min-width: 220px; padding: 1.2em 1em; align-self: stretch; }
    .flow-arrow { display: none; }
}

@media (max-width: 768px) {
    #flow { padding: 2em 0; }
    #flow h2 { margin-bottom: 1em; }
    #flow > p { display: block; font-size: 1.1rem; text-align: left; margin-bottom: 1em; padding: 0; }
    .gridbox.flow-horizontal { flex-direction: column; gap: 1.5em; align-items: stretch; padding: 0; margin-top: 1.5em; }
    .flow-arrow { display: none; }
    .gridbox.flow-horizontal > .gridbox-item {
        flex-direction: column; align-items: center; text-align: center; gap: 0;
        width: 100%; padding: 1.2em 1em;
        border: 1px solid var(--color-border-dark);
        background-color: var(--color-background-header);
        border-radius: var(--border-radius-m);
        box-shadow: 0 2px 8px var(--shadow-color-light);
        margin-bottom: 0; align-self: auto;
    }
    .flow-item-visual { width: 48px; height: 48px; }
    .flow-item-visual .flow-item-step { font-size: 0.8rem; }
    .flow-item { flex-direction: column; align-items: center; text-align: center; flex-grow: 1; }
    .flow-item > div:first-child { margin-bottom: 0.6em; }
    .flow-item > div:first-child img { border-radius: 0.3em; }
    .flow-item dt { font-size: 1.1rem; margin-bottom: 0.5em; }
    .flow-item dd ul { text-align: left; }
    .flow-item dd ul li { font-size: 0.85rem; padding-left: 1em; }
    .flow-item dd ul li::before { font-size: 0.7em; }
    .sp-only { display: block; }
}

/* #lineup (Size Guide) */
#lineup .tools .gridbox-border { display: flex; flex-direction: column; }
#lineup .tools h3 { font-size: 1.1rem; text-align: center; }
#lineup .tools .size-icon {
    width: 80px; height: 80px; margin: 0 auto 1em;
    background-color: var(--color-accent);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-family: var(--font-display);
    font-size: 1.1rem; font-weight: 700; color: var(--color-dark);
    box-shadow: 0 4px 12px rgba(244, 200, 59, 0.25);
}
#lineup .tools .size-meta {
    font-size: 0.85rem; color: var(--color-primary);
    font-weight: 600; text-align: center; margin-bottom: 0.8em;
}
#lineup .tools p { font-size: 0.9rem; line-height: 1.5; margin-bottom: 1em; }

/* Lineup Toggle → Modal Button */
#lineup .tools .link_btn_wrapper { margin-top: auto; }
#lineup .tools .link_btn { width: 100%; }

/* Lineup Modal */
.lineup-modal {
    position: fixed; inset: 0;
    z-index: var(--z-index-modal);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}
.lineup-modal.active { opacity: 1; visibility: visible; }
.lineup-modal-overlay {
    position: absolute; inset: 0;
    background-color: var(--color-background-modal);
}
.lineup-modal-content {
    position: relative; z-index: 1;
    background-color: var(--color-background-modal-content);
    border-radius: var(--border-radius-m);
    padding: 2.5em;
    max-width: 560px; width: 90%;
    max-height: 80vh; overflow-y: auto;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transform: translateY(20px);
    transition: transform var(--transition-base);
}
.lineup-modal.active .lineup-modal-content { transform: translateY(0); }
.lineup-modal-close {
    position: absolute; top: 1em; right: 1em;
    background: none; border: none; cursor: pointer;
    font-size: 1.5rem; color: var(--color-text-light);
    padding: 0.5em; line-height: 1;
    transition: color var(--transition-base);
}
.lineup-modal-close:hover { color: var(--color-text); }
.lineup-modal-content h3 {
    font-size: 1.5rem; font-weight: 700; margin-bottom: 0.3em;
    text-align: center;
}
.lineup-modal-content .lineup-modal-size {
    width: 72px; height: 72px; margin: 0 auto 1em;
    background-color: var(--color-accent);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem; font-weight: 900; color: var(--color-dark);
}
.lineup-modal-content .lineup-modal-meta {
    font-size: 0.9rem; color: var(--color-primary);
    font-weight: 600; text-align: center; margin-bottom: 1.2em;
}
.lineup-modal-content .lineup-modal-desc {
    font-size: 0.95rem; line-height: 1.8; color: var(--color-text);
}
.lineup-modal-content .lineup-modal-desc li {
    margin-bottom: 0.6em; padding-left: 1.2em;
    position: relative; list-style: none;
}
.lineup-modal-content .lineup-modal-desc li::before {
    content: "\25CF"; position: absolute; left: 0;
    font-size: 0.8em; color: var(--color-primary);
}

@media (max-width: 768px) {
    .lineup-modal { align-items: flex-end; justify-content: stretch; }
    .lineup-modal-content {
        width: 100%; max-width: 100%;
        max-height: 80vh; border-radius: var(--border-radius-m) var(--border-radius-m) 0 0;
        padding: 2em 1.5em;
        transform: translateY(100%);
    }
    .lineup-modal.active .lineup-modal-content { transform: translateY(0); }
    .lineup-modal-content h3 { font-size: 1.3rem; }
}

@media (max-width: 768px) {
    #lineup .tools .gridbox-border { padding: 1em; }
    #lineup .tools h3 { font-size: 1rem; margin-bottom: 0.5em; }
    #lineup .tools .size-icon { width: 60px; height: 60px; font-size: 0.9rem; }
    #lineup .tools p { font-size: 0.85rem; line-height: 1.4; margin-bottom: 0.8em; }
}

/* FAQ */
#faq .open-list { max-width: 800px; margin: 0 auto; }
#faq .open-wrap { border-bottom: 1px solid var(--color-border-dark); }
#faq .open-wrap:first-child { border-top: 1px solid var(--color-border-dark); }

#faq .question {
    padding: 0.8em 2.5em 0.8em 1em; cursor: pointer;
    position: relative; font-weight: bold; font-size: 1.1rem;
}

#faq .question i.fa-chevron-down {
    position: absolute; right: 1em; top: 50%;
    transform: translateY(-50%); transition: transform 0.3s ease;
}

#faq .open-wrap.active .question i.fa-chevron-down {
    transform: translateY(-50%) rotate(180deg);
}

#faq .answer { padding: 0 1em 0.8em 1em; background-color: var(--color-background-faq-answer); display: none; }
#faq .answer p { margin-bottom: 0.3em; line-height: 1.6; }

@media (max-width: 768px) {
    #faq .question { font-size: 1rem; padding: 0.8em 2em 0.8em 0.8em; }
    #faq .question i.fa-chevron-down { right: 0.8em; }
    #faq .answer { padding: 0.8em; font-size: 0.9rem; }
}

/* Contact Form */
#contact-form {
    max-width: 720px; margin: 3em auto 0;
    background-color: var(--color-light);
    border: 2px solid var(--color-border-medium);
    border-radius: var(--border-radius-m);
    padding: 2.5em;
}

.contact-form__row {
    display: grid; grid-template-columns: 1fr 1fr; gap: 1em; margin-bottom: 1em;
}

.contact-form__group { margin-bottom: 1em; }
.contact-form__row .contact-form__group { margin-bottom: 0; }

.contact-form__label {
    display: block; font-size: 0.9rem; font-weight: 600;
    margin-bottom: 0.3em; color: var(--color-text);
}

.contact-form__label .required { color: var(--color-primary); margin-left: 2px; }

.contact-form__input {
    width: 100%; padding: 0.7em 1em;
    font-family: var(--font-family-base); font-size: 1rem;
    border: 1px solid var(--color-border-medium);
    border-radius: var(--border-radius-xs);
    background-color: var(--color-light); color: var(--color-text);
    outline: none; transition: border-color 0.2s;
}

.contact-form__input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}
.contact-form__input::placeholder { color: var(--color-text-lightest); }
textarea.contact-form__input { resize: vertical; min-height: 120px; }
.contact-form__submit { text-align: center; margin-top: 1.5em; }

.contact-form__submit .link_btn {
    padding: 1em 3em; font-size: 1.1rem;
    border-color: var(--color-primary); color: var(--color-primary);
}

.contact-form__submit .link_btn:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary); color: #fff; opacity: 1;
}

@media (max-width: 768px) {
    #contact-form { padding: 1.5em; margin: 2em auto 0; }
    .contact-form__row { grid-template-columns: 1fr; gap: 0; }
    .contact-form__submit .link_btn { padding: 0.8em 2em; font-size: 1rem; }
}

/* Floating Button */
.floating-btn {
    position: fixed; bottom: 90px; right: 20px;
    z-index: var(--z-index-floating-btn);
}

.floating-btn a {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    width: 120px; height: 120px;
    background-color: var(--color-primary); color: var(--color-light);
    border-radius: var(--border-radius-round);
    box-shadow: 0 4px 16px var(--color-primary-glow);
    text-align: center; font-size: 1rem; line-height: 1.3;
    transition: all var(--transition-base);
}

.floating-btn a figure i { font-size: 1.8em; margin-bottom: 0.3em; }
.floating-btn a span { display: block; }

.floating-btn a.hover:hover {
    background-color: var(--color-primary-hover);
    color: var(--color-light); opacity: 1;
    box-shadow: 0 6px 24px var(--color-primary-glow);
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .floating-btn { bottom: 0; right: 0; width: 100%; padding: 0; display: flex; flex-direction: column; }
    .floating-btn a.modal-open-btn {
        flex-direction: row; width: 100%; height: 50px;
        border-radius: 0; font-size: 0.9rem; gap: 0.5em;
        box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.1);
    }
    .floating-btn a.modal-open-btn figure i { font-size: 1.2em; margin-bottom: 0; }
    .floating-btn a.modal-open-btn span { display: inline; }
    .floating-btn a[href^="mailto"] {
        height: 36px; line-height: 36px; text-align: center;
        background-color: transparent; color: var(--color-light);
        font-size: 0.8rem;
    }
}

/* Footer */
#footer {
    padding: 3.5em 0; text-align: center;
    background-color: var(--color-background-footer);
    color: var(--color-light);
}

#footer h2 { font-size: 2rem; margin-bottom: 1em; color: var(--color-light); letter-spacing: 0.03em; }
#footer .link_btn {
    font-size: 1.2rem; padding: 1em 2em;
    margin-bottom: 2em; background-color: transparent;
    border-color: rgba(255,255,255,0.3); color: var(--color-light);
}

#footer .link_btn i { margin-right: 0.5em; }

#footer .link_btn.hover:hover {
    background-color: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.5);
    color: var(--color-light); opacity: 1;
    box-shadow: none; transform: translateY(-1px);
}

#footer .footer-links { margin-bottom: 1.5em; }
#footer .footer-links a {
    color: rgba(255,255,255,.5); margin: 0 0.8em;
    font-size: 0.85rem; transition: color 0.2s;
}
#footer .footer-links a:hover { color: #fff; opacity: 1; }

#footer p { font-size: 0.85rem; line-height: 1.5; color: rgba(255,255,255,.5); margin-bottom: 1em; }
#footer small { font-size: 0.75rem; color: rgba(255,255,255,.3); }

@media (max-width: 768px) {
    #footer { padding: 1.5em 0; padding-bottom: calc(1.5em + 50px); }
    #footer h2 { font-size: 1.5rem; margin-bottom: 0.8em; }
    #footer .link_btn { font-size: 1rem; padding: 0.8em 1.5em; margin-bottom: 1.5em; }
    #footer p, #footer small { font-size: 0.7rem; }
}

/* Go Top Button */
#go-top {
    position: fixed; bottom: 20px; right: 20px;
    z-index: var(--z-index-go-top); display: none;
}

#go-top a {
    display: inline-block;
    background-color: var(--color-background-go-top);
    color: var(--color-light);
    width: 40px; height: 40px; text-align: center;
    line-height: 40px; border-radius: var(--border-radius-round);
    font-size: 1.2rem;
}

#go-top a:hover { background-color: var(--color-background-go-top-hover); opacity: 1; }

@media (max-width: 768px) {
    #go-top { bottom: calc(10px + 50px); right: 10px; }
    #go-top a { width: 36px; height: 36px; line-height: 36px; font-size: 1rem; }
}

/* Contact Modal */
.contact-modal {
    position: fixed; inset: 0;
    z-index: var(--z-index-modal);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.contact-modal.active {
    opacity: 1; visibility: visible;
}

.contact-modal-overlay {
    position: absolute; inset: 0;
    background-color: var(--color-background-modal);
}

.contact-modal-content {
    position: relative; z-index: 1;
    background-color: var(--color-background-modal-content);
    border-radius: var(--border-radius-m);
    padding: 2.5em;
    max-width: 720px; width: 90%;
    max-height: 90vh; overflow-y: auto;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transform: translateY(20px);
    transition: transform var(--transition-base);
}

.contact-modal.active .contact-modal-content {
    transform: translateY(0);
}

.contact-modal-close {
    position: absolute; top: 1em; right: 1em;
    background: none; border: none; cursor: pointer;
    font-size: 1.5rem; color: var(--color-text-light);
    padding: 0.5em; line-height: 1;
    transition: color var(--transition-base);
}

.contact-modal-close:hover { color: var(--color-text); }

.contact-modal-content h2 {
    font-size: 1.8rem; margin-bottom: 0.5em;
}

.contact-modal-desc {
    font-size: 1rem; color: var(--color-text-light);
    margin-bottom: 1.5em;
}

@media (max-width: 768px) {
    .contact-modal {
        align-items: flex-end; justify-content: stretch;
    }
    .contact-modal-content {
        width: 100%; max-width: 100%;
        max-height: 95vh; border-radius: var(--border-radius-m) var(--border-radius-m) 0 0;
        padding: 2em 1.5em;
        transform: translateY(100%);
    }
    .contact-modal.active .contact-modal-content {
        transform: translateY(0);
    }
    .contact-modal-content h2 { font-size: 1.4rem; }
}

/* Phantom Animation */
.phantom {
    opacity: 0; transform: translateY(30px);
    transition: opacity 0.7s var(--transition-timing-function), transform 0.7s var(--transition-timing-function);
}

.phantom.phantom-animation { opacity: 1; transform: translateY(0); }

@media (min-width: 769px) {
    .sp-only { display: none !important; }
}