/* ========================================
   RESET & CUSTOM PROPERTIES
   ======================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --cream: #FAF6F0;
    --cream-mid: #F0EBE3;
    --cream-dark: #E5DFD5;
    --ink: #1A1A1A;
    --ink-light: #3D3D3D;
    --ink-faded: #6B6B6B;
    --sumi: #2C2420;
    --sumi-light: #4A3F38;
    --sumi-warm: #5C4A3D;
    --beni: #C23B22;
    --beni-light: #D4553D;
    --beni-pale: rgba(194, 59, 34, 0.08);
    --warm-gray: #9C958B;
    --border: #DDD6CC;
    --border-light: #EDE8E1;
    --paper: #FFFCF7;
    --shadow-sm: 0 2px 8px rgba(44, 36, 32, 0.04);
    --shadow-md: 0 8px 32px rgba(44, 36, 32, 0.06);
    --shadow-lg: 0 20px 60px rgba(44, 36, 32, 0.08);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--cream);
    color: var(--ink);
    line-height: 1.8;
    font-weight: 400;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: var(--beni-pale);
    color: var(--sumi);
}

/* ========================================
   READING PROGRESS BAR
   ======================================== */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--beni), var(--beni-light));
    z-index: 1000;
    transition: width 0.1s linear;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1, h2, h3, h4 {
    font-family: 'DM Serif Display', Georgia, serif;
    font-weight: 400;
    line-height: 1.2;
}

.label {
    font-family: 'Space Mono', monospace;
    font-size: 0.68rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--warm-gray);
}

.jp-text {
    font-family: 'Noto Serif JP', serif;
}

/* ========================================
   LAYOUT
   ======================================== */
.container {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 28px;
}

.container--wide {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 28px;
}

section {
    padding: 80px 0;
}

@media (min-width: 768px) {
    section {
        padding: 120px 0;
    }
}

/* ========================================
   SECTION NAV (sticky)
   ======================================== */
.section-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(250, 246, 240, 0.88);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(221, 214, 204, 0.5);
    transform: translateY(-100%);
    transition: transform 0.4s var(--ease-out);
}

.section-nav.visible {
    transform: translateY(0);
}

.section-nav-inner {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 52px;
    overflow-x: auto;
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.section-nav-inner::-webkit-scrollbar {
    display: none;
}

.section-nav-links {
    display: flex;
    gap: 4px;
    align-items: center;
}

.section-nav-links a {
    font-family: 'Space Mono', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--sumi-warm);
    text-decoration: none;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    transition: all 0.25s var(--ease-out);
    white-space: nowrap;
    position: relative;
}

.section-nav-links a::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    width: 0;
    height: 1.5px;
    background: var(--beni);
    transition: all 0.25s var(--ease-out);
    transform: translateX(-50%);
}

.section-nav-links a:hover {
    color: var(--sumi);
}

.section-nav-links a:hover::after,
.section-nav-links a.active::after {
    width: 60%;
}

.section-nav-links a.active {
    color: var(--beni);
}

.section-nav-title {
    font-family: 'Noto Serif JP', serif;
    font-size: 0.85rem;
    color: var(--beni);
    opacity: 0.6;
    white-space: nowrap;
}

.nav-reading-time {
    font-family: 'Space Mono', monospace;
    font-size: 0.6rem;
    color: var(--warm-gray);
    white-space: nowrap;
    display: none;
}

@media (min-width: 768px) {
    .nav-reading-time { display: block; }
}

/* ========================================
   HERO
   ======================================== */
.hero {
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    padding: 60px 0;
}

/* Ink wash background gradient */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 50% 40%, rgba(194, 59, 34, 0.03) 0%, transparent 70%),
        linear-gradient(180deg, var(--cream) 0%, var(--cream-mid) 100%);
}

/* Vertical Japanese text - left side */
.hero-vertical-left {
    position: absolute;
    left: 24px;
    top: 50%;
    transform: translateY(-50%);
    writing-mode: vertical-rl;
    font-family: 'Noto Serif JP', serif;
    font-size: 0.7rem;
    color: var(--warm-gray);
    opacity: 0.3;
    letter-spacing: 0.5em;
    user-select: none;
    pointer-events: none;
}

/* Vertical Japanese text - right side */
.hero-vertical-right {
    position: absolute;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    writing-mode: vertical-rl;
    font-family: 'Noto Serif JP', serif;
    font-size: 0.7rem;
    color: var(--warm-gray);
    opacity: 0.3;
    letter-spacing: 0.5em;
    user-select: none;
    pointer-events: none;
}

@media (max-width: 768px) {
    .hero-vertical-left, .hero-vertical-right { display: none; }
}

.hero-kanji {
    position: absolute;
    font-family: 'Noto Serif JP', serif;
    font-size: clamp(180px, 30vw, 400px);
    font-weight: 900;
    color: var(--sumi);
    opacity: 0.028;
    user-select: none;
    pointer-events: none;
    line-height: 1;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -55%);
    white-space: nowrap;
    transition: opacity 0.8s ease;
}

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

.hero-chapter {
    font-family: 'Space Mono', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--warm-gray);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.hero-chapter::before,
.hero-chapter::after {
    content: '';
    width: 24px;
    height: 1px;
    background: var(--border);
}

.hero-label {
    font-family: 'Noto Serif JP', serif;
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    color: var(--beni);
    margin-bottom: 16px;
    opacity: 0.5;
    letter-spacing: 0.3em;
}

.hero h1 {
    font-size: clamp(2.6rem, 6.5vw, 4.5rem);
    margin-bottom: 20px;
    color: var(--sumi);
    letter-spacing: -0.01em;
}

.hero-subtitle {
    font-family: 'Instrument Serif', 'DM Serif Display', Georgia, serif;
    font-style: italic;
    font-size: clamp(1.05rem, 2.2vw, 1.25rem);
    color: var(--sumi-warm);
    max-width: 480px;
    margin: 0 auto 36px;
    line-height: 1.8;
    opacity: 0.7;
}

.hero-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-meta span {
    font-family: 'Space Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--warm-gray);
}

.hero-meta-dot {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: var(--warm-gray);
    opacity: 0.4;
}

.hero-scroll {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0.3;
    animation: gentleBounce 3s ease-in-out infinite;
}

.hero-scroll .label {
    font-size: 0.55rem;
    letter-spacing: 0.25em;
}

.hero-scroll-line {
    width: 1px;
    height: 32px;
    background: linear-gradient(to bottom, var(--sumi-warm), transparent);
}

@keyframes gentleBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ========================================
   TAB BAR VISUALIZATION
   ======================================== */
.tab-bar-wrapper {
    background: var(--cream-mid);
    padding: 0 0 2px 0;
    position: relative;
}

.tab-bar {
    display: flex;
    justify-content: center;
    gap: 1.5px;
    padding: 32px 24px 0;
    max-width: 620px;
    margin: 0 auto;
    overflow: hidden;
}

.tab-bar-tab {
    height: 26px;
    background: var(--paper);
    border: 1px solid var(--border);
    border-bottom: none;
    border-radius: 5px 5px 0 0;
    flex-shrink: 0;
    position: relative;
    transition: all 0.4s var(--ease-out);
}

.tab-bar-tab::after {
    content: '';
    position: absolute;
    top: 5px;
    left: 3px;
    right: 3px;
    height: 2px;
    background: var(--warm-gray);
    opacity: 0.2;
    border-radius: 1px;
}

.tab-bar-tab.active-tab {
    background: var(--beni-pale);
    border-color: var(--beni);
    border-color: rgba(194, 59, 34, 0.2);
}

.tab-bar-tab.active-tab::after {
    background: var(--beni);
    opacity: 0.3;
}

.tab-bar-line {
    width: 100%;
    height: 1px;
    background: var(--border);
}

.tab-bar-count {
    text-align: center;
    padding: 12px 0 20px;
    font-family: 'Space Mono', monospace;
    font-size: 0.65rem;
    color: var(--warm-gray);
    letter-spacing: 0.05em;
}

.tab-bar-count span {
    color: var(--beni);
    font-weight: 700;
}

/* ========================================
   ESSAY SECTIONS
   ======================================== */
.essay-section {
    padding: 80px 0;
    position: relative;
}

@media (min-width: 768px) {
    .essay-section {
        padding: 120px 0;
    }
}

.essay-section--alt {
    background: var(--cream-mid);
}

.essay-section--dark {
    background: var(--beni);
    color: var(--cream);
}

.essay-section--dark .label {
    color: var(--beni-light);
    opacity: 0.7;
}

.essay-section--dark h2 {
    color: var(--cream);
}

.essay-section--dark p {
    color: rgba(250, 246, 240, 0.75);
}

.essay-section--dark .pull-quote {
    color: var(--cream);
    border-left-color: var(--beni-light);
}

.essay-section--dark .essay-body p,
.essay-section--dark .pull-quote p {
    color: rgba(250, 246, 240, 0.9);
}

.essay-section--dark .essay-body .drop-cap::first-letter {
    color: var(--cream);
}

.essay-section--dark .section-header h2 {
    color: var(--cream);
}

.essay-section--dark .section-header p {
    color: rgba(250, 246, 240, 0.75);
}

.essay-section--dark .pull-quote::before {
    color: var(--beni-light);
}

/* Section header with Japanese accent */
.section-header {
    text-align: center;
    margin-bottom: 56px;
    position: relative;
}

.section-header .label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.section-header .label::before,
.section-header .label::after {
    content: '';
    width: 20px;
    height: 1px;
    background: currentColor;
    opacity: 0.4;
}

.section-header h2 {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    margin-top: 14px;
    color: var(--sumi);
    letter-spacing: -0.01em;
}

.section-header p {
    color: var(--sumi-warm);
    font-family: 'Instrument Serif', 'DM Serif Display', Georgia, serif;
    font-style: italic;
    font-size: 1.05rem;
    max-width: 440px;
    margin: 10px auto 0;
    opacity: 0.65;
}

/* Enso circle divider between chapters */
.enso-divider {
    width: 100%;
    text-align: center;
    padding: 20px 0;
    position: relative;
}

.enso-divider svg {
    width: 48px;
    height: 48px;
    opacity: 0.12;
}

/* Essay body typography */
.essay-body p {
    font-size: 1.08rem;
    line-height: 1.95;
    color: var(--ink-light);
    margin-bottom: 24px;
}

.essay-body p:last-child {
    margin-bottom: 0;
}

/* Drop cap for first paragraph */
.essay-body .drop-cap::first-letter {
    font-family: 'Noto Serif JP', serif;
    float: left;
    font-size: 3.8rem;
    line-height: 0.85;
    padding-right: 12px;
    padding-top: 6px;
    color: var(--beni);
    font-weight: 900;
}

.pull-quote {
    border-left: 2px solid var(--beni);
    padding: 24px 0 24px 32px;
    margin: 44px 0;
    position: relative;
}

.pull-quote p {
    font-family: 'Instrument Serif', 'DM Serif Display', Georgia, serif;
    font-size: 1.35rem;
    font-style: italic;
    color: var(--sumi);
    line-height: 1.65;
    margin: 0;
    opacity: 0.85;
}

.concept-accent {
    display: inline;
    background: var(--sumi);
    color: var(--cream);
    padding: 1px 8px;
    border-radius: 3px;
    font-family: 'Space Mono', monospace;
    font-size: 0.82em;
    letter-spacing: 0.02em;
}

.essay-section--dark .concept-accent {
    background: rgba(250, 246, 240, 0.15);
    color: var(--cream);
}

/* Inline Japanese */
.jp-inline {
    font-family: 'Noto Serif JP', serif;
    color: var(--beni);
}

/* ========================================
   STAT CALLOUT (between paragraphs)
   ======================================== */
.stat-callout {
    display: flex;
    align-items: center;
    gap: 20px;
    margin: 40px 0;
    padding: 24px 28px;
    background: var(--beni-pale);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--beni);
}

.stat-callout-number {
    font-family: 'DM Serif Display', Georgia, serif;
    font-size: 2.4rem;
    color: var(--beni);
    line-height: 1;
    flex-shrink: 0;
}

.stat-callout-text {
    font-size: 0.88rem;
    color: var(--sumi-warm);
    line-height: 1.6;
}

.essay-section--dark .stat-callout {
    background: rgba(194, 59, 34, 0.1);
    border-left-color: var(--beni-light);
}

.essay-section--dark .stat-callout-number {
    color: var(--beni-light);
}

.essay-section--dark .stat-callout-text {
    color: rgba(250, 246, 240, 0.7);
}

/* ========================================
   TAXONOMY GRID
   ======================================== */
.taxonomy-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 640px) {
    .taxonomy-grid {
        grid-template-columns: 1fr 1fr;
        gap: 18px;
    }
}

@media (min-width: 940px) {
    .taxonomy-grid {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 20px;
    }
}

.taxonomy-card {
    background: var(--paper);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s var(--ease-out);
}

.taxonomy-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-light);
}

.taxonomy-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--beni);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s var(--ease-out);
}

.taxonomy-card:hover::before {
    transform: scaleX(1);
}

.taxonomy-card-number {
    font-family: 'Space Mono', monospace;
    font-size: 0.6rem;
    color: var(--warm-gray);
    letter-spacing: 0.1em;
    margin-bottom: 16px;
}

.taxonomy-card-title {
    font-family: 'DM Serif Display', Georgia, serif;
    font-size: 1.2rem;
    margin-bottom: 4px;
    color: var(--sumi);
}

.taxonomy-card-quip {
    font-family: 'Instrument Serif', Georgia, serif;
    font-style: italic;
    color: var(--warm-gray);
    font-size: 0.88rem;
    margin-bottom: 14px;
}

.taxonomy-card-body {
    font-size: 0.88rem;
    line-height: 1.7;
    color: var(--ink-faded);
}

.taxonomy-card-stat {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
}

.taxonomy-card-stat-number {
    font-family: 'DM Serif Display', Georgia, serif;
    font-size: 1.8rem;
    color: var(--beni);
    line-height: 1;
}

.taxonomy-card:nth-child(even) .taxonomy-card-stat-number {
    color: var(--sumi-warm);
}

.taxonomy-card-stat-label {
    font-family: 'Space Mono', monospace;
    font-size: 0.62rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--warm-gray);
    line-height: 1.5;
}

/* ========================================
   BOOKMARK STACK
   ======================================== */
.bookmark-stack {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
    margin: 48px auto;
    max-width: 440px;
    position: relative;
    cursor: default;
}

.bookmark-item {
    background: var(--paper);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 20px;
    width: 88%;
    font-family: 'Space Mono', monospace;
    font-size: 0.68rem;
    color: var(--warm-gray);
    position: relative;
    transition: all 0.5s var(--ease-out);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.bookmark-item .bookmark-date {
    font-size: 0.58rem;
    opacity: 0.5;
    white-space: nowrap;
    margin-left: 12px;
}

.bookmark-item:nth-child(1) { width: 92%; opacity: 1; z-index: 6; }
.bookmark-item:nth-child(2) { width: 88%; opacity: 0.82; margin-top: -5px; z-index: 5; }
.bookmark-item:nth-child(3) { width: 84%; opacity: 0.65; margin-top: -5px; z-index: 4; }
.bookmark-item:nth-child(4) { width: 80%; opacity: 0.5; margin-top: -5px; z-index: 3; }
.bookmark-item:nth-child(5) { width: 76%; opacity: 0.35; margin-top: -5px; z-index: 2; }
.bookmark-item:nth-child(6) { width: 72%; opacity: 0.2; margin-top: -5px; z-index: 1; }

.bookmark-stack:hover .bookmark-item:nth-child(1) { transform: translateY(-12px) rotate(-0.5deg); }
.bookmark-stack:hover .bookmark-item:nth-child(2) { transform: translateY(-6px) rotate(0.3deg); }
.bookmark-stack:hover .bookmark-item:nth-child(3) { transform: translateY(0) rotate(-0.2deg); }
.bookmark-stack:hover .bookmark-item:nth-child(4) { transform: translateY(6px) rotate(0.4deg); }
.bookmark-stack:hover .bookmark-item:nth-child(5) { transform: translateY(12px) rotate(-0.3deg); }
.bookmark-stack:hover .bookmark-item:nth-child(6) { transform: translateY(18px); opacity: 0.4; }

.bookmark-stack-label {
    margin-top: 16px;
    font-family: 'Space Mono', monospace;
    font-size: 0.6rem;
    color: var(--warm-gray);
    opacity: 0.5;
    text-align: center;
}

/* ========================================
   CALCULATOR
   ======================================== */
.calculator-section {
    background: var(--cream-mid);
    padding: 80px 0;
}

@media (min-width: 768px) {
    .calculator-section {
        padding: 120px 0;
    }
}

.calculator {
    background: var(--paper);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 44px 36px;
    max-width: 600px;
    margin: 0 auto;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.calculator::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--beni), var(--sumi-warm));
}

.calculator-title {
    font-family: 'DM Serif Display', Georgia, serif;
    font-size: 1.4rem;
    text-align: center;
    margin-bottom: 6px;
    color: var(--sumi);
}

.calculator-subtitle {
    text-align: center;
    font-family: 'Instrument Serif', Georgia, serif;
    font-style: italic;
    font-size: 0.92rem;
    color: var(--warm-gray);
    margin-bottom: 40px;
}

.slider-group {
    margin-bottom: 32px;
}

.slider-label {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 8px;
}

.slider-label-text {
    font-family: 'DM Serif Display', Georgia, serif;
    font-size: 1rem;
    color: var(--sumi);
}

.slider-label-value {
    font-family: 'Space Mono', monospace;
    font-size: 0.85rem;
    color: var(--beni);
    font-weight: 700;
    min-width: 48px;
    text-align: right;
    transition: transform 0.15s var(--ease-spring);
}

.slider-label-value.bumped {
    transform: scale(1.2);
}

.slider-description {
    font-size: 0.76rem;
    color: var(--warm-gray);
    margin-bottom: 10px;
    font-style: italic;
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    border-radius: 2px;
    background: var(--cream-dark);
    outline: none;
    cursor: pointer;
    transition: background 0.3s ease;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--beni);
    cursor: pointer;
    border: 3px solid var(--paper);
    box-shadow: 0 2px 10px rgba(194, 59, 34, 0.3);
    transition: all 0.2s var(--ease-spring);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 4px 16px rgba(194, 59, 34, 0.4);
}

input[type="range"]::-webkit-slider-thumb:active {
    transform: scale(1.05);
}

input[type="range"]::-moz-range-thumb {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--beni);
    cursor: pointer;
    border: 3px solid var(--paper);
    box-shadow: 0 2px 10px rgba(194, 59, 34, 0.3);
}

.calculator-divider {
    width: 100%;
    height: 1px;
    background: var(--border);
    margin: 36px 0;
}

.calculator-result {
    text-align: center;
    padding: 20px 0;
    display: none;
}

.calculator-result.show {
    display: block;
    animation: resultReveal 0.6s var(--ease-out);
}

@keyframes resultReveal {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Circular score gauge */
.score-gauge {
    width: 180px;
    height: 180px;
    margin: 0 auto 20px;
    position: relative;
}

.score-gauge svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.score-gauge-track {
    fill: none;
    stroke: var(--cream-dark);
    stroke-width: 6;
}

.score-gauge-fill {
    fill: none;
    stroke: var(--beni);
    stroke-width: 6;
    stroke-linecap: round;
    stroke-dasharray: 440;
    stroke-dashoffset: 440;
    transition: stroke-dashoffset 1.2s var(--ease-out);
}

.score-gauge-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.score-gauge-number {
    font-family: 'DM Serif Display', Georgia, serif;
    font-size: 3.2rem;
    color: var(--beni);
    line-height: 1;
}

.score-gauge-label {
    font-family: 'Space Mono', monospace;
    font-size: 0.6rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--warm-gray);
    margin-top: 2px;
}

.result-icon {
    font-size: 2.5rem;
    margin-bottom: 8px;
    line-height: 1;
}

.result-diagnosis {
    font-family: 'DM Serif Display', Georgia, serif;
    font-size: 1.5rem;
    color: var(--sumi);
    margin-bottom: 8px;
}

.result-jp-title {
    font-family: 'Noto Serif JP', serif;
    font-size: 0.85rem;
    color: var(--beni);
    opacity: 0.5;
    margin-bottom: 16px;
}

.result-description {
    font-size: 0.92rem;
    color: var(--ink-faded);
    max-width: 420px;
    margin: 0 auto 28px;
    line-height: 1.75;
}

.result-breakdown {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    margin: 24px auto;
    max-width: 400px;
}

.result-breakdown-item {
    text-align: center;
}

.result-breakdown-bar {
    width: 100%;
    height: 4px;
    background: var(--cream-dark);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 6px;
}

.result-breakdown-fill {
    height: 100%;
    background: var(--beni);
    border-radius: 2px;
    transition: width 0.8s var(--ease-out);
    width: 0;
}

.result-breakdown-label {
    font-family: 'Space Mono', monospace;
    font-size: 0.52rem;
    color: var(--warm-gray);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.btn-calculate {
    display: block;
    background: var(--sumi);
    color: var(--cream);
    padding: 16px 36px;
    border-radius: var(--radius-md);
    border: none;
    font-family: 'Space Mono', monospace;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s var(--ease-out);
    width: 100%;
    position: relative;
    overflow: hidden;
}

.btn-calculate:hover {
    background: var(--ink);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(44, 36, 32, 0.15);
}

.btn-calculate:active {
    transform: translateY(0);
}

.btn-share {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--beni);
    color: white;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    border: none;
    font-family: 'Space Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s var(--ease-out);
}

.btn-share:hover {
    background: var(--beni-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(194, 59, 34, 0.2);
}

.share-feedback {
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    color: var(--beni);
    margin-top: 10px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.share-feedback.show {
    opacity: 1;
}

/* ========================================
   NEWSLETTER CTA
   ======================================== */
.newsletter-section {
    background: var(--sumi);
    padding: 72px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.newsletter-section::before {
    content: '積';
    position: absolute;
    font-family: 'Noto Serif JP', serif;
    font-size: 300px;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.015);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.newsletter-inner {
    max-width: 480px;
    margin: 0 auto;
    position: relative;
}

.newsletter-inner h3 {
    font-size: 1.5rem;
    color: var(--cream);
    margin-bottom: 10px;
}

.newsletter-inner p {
    font-family: 'Instrument Serif', Georgia, serif;
    font-style: italic;
    font-size: 0.95rem;
    color: rgba(250, 246, 240, 0.5);
    margin-bottom: 28px;
    line-height: 1.7;
}

.newsletter-form {
    display: flex;
    gap: 10px;
    max-width: 400px;
    margin: 0 auto;
}

.newsletter-form input[type="email"] {
    flex: 1;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(250, 246, 240, 0.1);
    background: rgba(250, 246, 240, 0.05);
    color: var(--cream);
    font-family: 'Inter', sans-serif;
    font-size: 0.88rem;
    outline: none;
    transition: all 0.3s ease;
}

.newsletter-form input[type="email"]::placeholder {
    color: rgba(250, 246, 240, 0.3);
}

.newsletter-form input[type="email"]:focus {
    border-color: var(--beni);
    background: rgba(250, 246, 240, 0.08);
}

.newsletter-form button {
    padding: 14px 24px;
    border-radius: var(--radius-md);
    border: none;
    background: var(--beni);
    color: white;
    font-family: 'Space Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.newsletter-form button:hover {
    background: var(--beni-light);
    transform: translateY(-1px);
}

@media (max-width: 480px) {
    .newsletter-form {
        flex-direction: column;
    }
}

/* ========================================
   ECOSYSTEM FOOTER
   ======================================== */
.ecosystem {
    background: var(--cream-mid);
    padding: 72px 0;
}

.ecosystem-header {
    text-align: center;
    margin-bottom: 36px;
}

.ecosystem-header h3 {
    font-size: 1.3rem;
    color: var(--sumi);
    margin-top: 8px;
}

.ecosystem-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
    max-width: 640px;
    margin: 0 auto;
}

@media (min-width: 640px) {
    .ecosystem-grid {
        grid-template-columns: 1fr 1fr 1fr;
    }
}

.ecosystem-card {
    background: var(--paper);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px 20px;
    text-align: center;
    text-decoration: none;
    transition: all 0.4s var(--ease-out);
    display: block;
    position: relative;
    overflow: hidden;
}

.ecosystem-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--beni);
    transform: scaleX(0);
    transition: transform 0.4s var(--ease-out);
}

.ecosystem-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.ecosystem-card:hover::after {
    transform: scaleX(1);
}

.ecosystem-card-arrow {
    font-size: 1.1rem;
    margin-bottom: 8px;
    display: block;
    color: var(--beni);
    transition: transform 0.3s var(--ease-out);
}

.ecosystem-card:hover .ecosystem-card-arrow {
    transform: translateX(4px);
}

.ecosystem-card-label {
    font-family: 'Space Mono', monospace;
    font-size: 0.6rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--warm-gray);
    margin-bottom: 4px;
}

.ecosystem-card-name {
    font-family: 'DM Serif Display', Georgia, serif;
    font-size: 1.1rem;
    color: var(--sumi);
    margin-bottom: 6px;
}

.ecosystem-card-desc {
    font-size: 0.78rem;
    color: var(--ink-faded);
    line-height: 1.5;
}

/* ========================================
   MAIN FOOTER
   ======================================== */
footer {
    background: var(--sumi);
    color: rgba(250, 246, 240, 0.4);
    padding: 36px 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.footer-kanji {
    font-family: 'Noto Serif JP', serif;
    font-size: 1.2rem;
    color: var(--beni);
    opacity: 0.3;
    margin-bottom: 4px;
}

.footer-copyright {
    font-family: 'Space Mono', monospace;
    font-size: 0.68rem;
    letter-spacing: 0.05em;
}

.footer-copyright a {
    color: rgba(250, 246, 240, 0.55);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-copyright a:hover {
    color: var(--beni-light);
}

.footer-built {
    font-size: 0.75rem;
    color: rgba(250, 246, 240, 0.25);
}

.footer-built a {
    color: rgba(250, 246, 240, 0.4);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-built a:hover {
    color: var(--beni-light);
}

/* ========================================
   SCROLL ANIMATIONS
   ======================================== */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.06s; }
.reveal-delay-2 { transition-delay: 0.12s; }
.reveal-delay-3 { transition-delay: 0.18s; }
.reveal-delay-4 { transition-delay: 0.24s; }
.reveal-delay-5 { transition-delay: 0.3s; }
.reveal-delay-6 { transition-delay: 0.36s; }

/* Slide from left */
.reveal-left {
    opacity: 0;
    transform: translateX(-24px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal-left.visible {
    opacity: 1;
    transform: translateX(0);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 480px) {
    .calculator {
        padding: 28px 20px;
        border-radius: var(--radius-md);
    }

    .score-gauge {
        width: 150px;
        height: 150px;
    }

    .score-gauge-number {
        font-size: 2.6rem;
    }

    .pull-quote {
        padding-left: 20px;
    }

    .pull-quote p {
        font-size: 1.15rem;
    }

    .section-nav-links {
        gap: 2px;
    }

    .section-nav-links a {
        font-size: 0.55rem;
        padding: 5px 6px;
    }

    .stat-callout {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .result-breakdown {
        grid-template-columns: repeat(5, 1fr);
        gap: 4px;
    }

    .result-breakdown-label {
        font-size: 0.45rem;
    }
}

/* ========================================
   THE NUMBERS — STAT GRID
   ======================================== */
.numbers-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    max-width: 640px;
    margin: 0 auto;
}

@media (min-width: 640px) {
    .numbers-grid {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 20px;
    }
}

.numbers-card {
    background: var(--paper);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 28px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: all 0.4s var(--ease-out);
}

.numbers-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.numbers-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--beni);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s var(--ease-out);
}

.numbers-card:hover::before {
    transform: scaleX(1);
}

.numbers-card-number {
    font-family: 'DM Serif Display', Georgia, serif;
    font-size: clamp(2.2rem, 5vw, 3rem);
    color: var(--beni);
    line-height: 1;
    margin-bottom: 8px;
}

.numbers-card-label {
    font-size: 0.88rem;
    color: var(--ink-light);
    line-height: 1.5;
    margin-bottom: 10px;
}

.numbers-card-source {
    font-family: 'Space Mono', monospace;
    font-size: 0.58rem;
    color: var(--warm-gray);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    opacity: 0.6;
}

.numbers-disclaimer {
    text-align: center;
    margin-top: 32px;
    font-family: 'Space Mono', monospace;
    font-size: 0.62rem;
    color: var(--warm-gray);
    letter-spacing: 0.03em;
    max-width: 540px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
    opacity: 0.6;
}

/* ========================================
   CURE TIPS — NUMBERED CARDS
   ======================================== */
.cure-tips {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 600px;
    margin: 0 auto;
}

.cure-tip-card {
    background: var(--paper);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px 28px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
    transition: all 0.4s var(--ease-out);
    position: relative;
    overflow: hidden;
}

.cure-tip-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-light);
}

.cure-tip-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 3px;
    background: var(--beni);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.4s var(--ease-out);
}

.cure-tip-card:hover::before {
    transform: scaleY(1);
}

.cure-tip-number {
    font-family: 'DM Serif Display', Georgia, serif;
    font-size: 1.6rem;
    color: var(--beni);
    line-height: 1;
    flex-shrink: 0;
    min-width: 28px;
    padding-top: 2px;
}

.cure-tip-content {
    flex: 1;
}

.cure-tip-title {
    font-family: 'DM Serif Display', Georgia, serif;
    font-size: 1.1rem;
    color: var(--sumi);
    margin-bottom: 6px;
}

.cure-tip-text {
    font-size: 0.88rem;
    color: var(--ink-faded);
    line-height: 1.7;
}

.cure-tip-text a {
    color: var(--beni);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color 0.2s ease;
}

.cure-tip-text a:hover {
    color: var(--beni-light);
}

@media (max-width: 480px) {
    .cure-tip-card {
        padding: 20px;
        gap: 14px;
    }
}

/* ========================================
   TROVE CTA SECTION
   ======================================== */
.trove-cta-section {
    background: var(--sumi);
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

@media (min-width: 768px) {
    .trove-cta-section {
        padding: 120px 0;
    }
}

.trove-cta-section::before {
    content: '味';
    position: absolute;
    font-family: 'Noto Serif JP', serif;
    font-size: 300px;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.015);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.trove-cta-inner {
    max-width: 520px;
    margin: 0 auto;
    position: relative;
}

.trove-cta-inner h3 {
    font-size: clamp(1.6rem, 3.5vw, 2.2rem);
    color: var(--cream);
    margin-bottom: 12px;
}

.trove-cta-inner .trove-cta-sub {
    font-family: 'Instrument Serif', Georgia, serif;
    font-style: italic;
    font-size: 1.05rem;
    color: rgba(250, 246, 240, 0.55);
    margin-bottom: 36px;
    line-height: 1.7;
}

.trove-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 36px;
    text-align: left;
    max-width: 340px;
    margin-left: auto;
    margin-right: auto;
}

.trove-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.88rem;
    color: rgba(250, 246, 240, 0.7);
}

.trove-feature-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(194, 59, 34, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.trove-feature-icon svg {
    width: 14px;
    height: 14px;
    stroke: var(--beni-light);
}

.btn-trove {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: var(--beni);
    color: white;
    padding: 16px 40px;
    border-radius: var(--radius-md);
    border: none;
    font-family: 'Space Mono', monospace;
    font-size: 0.82rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s var(--ease-out);
}

.btn-trove:hover {
    background: var(--beni-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(194, 59, 34, 0.25);
}

.btn-trove:active {
    transform: translateY(0);
}

.btn-trove svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    transition: transform 0.3s var(--ease-out);
}

.btn-trove:hover svg {
    transform: translateX(3px);
}

/* ========================================
   SHARE SCORE BUTTON (enhanced)
   ======================================== */
.share-score-wrapper {
    margin-top: 28px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

/* ========================================
   DECLUTTER DIARIES
   ======================================== */
.diaries-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .diaries-grid {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 20px;
    }
}

.diary-card {
    background: var(--paper);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s var(--ease-out);
}

.diary-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-light);
}

.diary-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--beni), var(--sumi-warm));
}

.diary-card-persona {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.diary-card-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--beni-pale);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.diary-card-name {
    font-family: 'DM Serif Display', Georgia, serif;
    font-size: 1rem;
    color: var(--sumi);
    line-height: 1.3;
}

.diary-card-role {
    font-family: 'Space Mono', monospace;
    font-size: 0.6rem;
    color: var(--warm-gray);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.diary-card-title {
    font-family: 'Instrument Serif', Georgia, serif;
    font-style: italic;
    font-size: 1.05rem;
    color: var(--sumi-warm);
    margin-bottom: 20px;
    opacity: 0.8;
}

.diary-before-after {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.diary-state {
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    position: relative;
}

.diary-state--before {
    background: rgba(194, 59, 34, 0.06);
    border-left: 3px solid var(--beni);
}

.diary-state--after {
    background: rgba(44, 36, 32, 0.04);
    border-left: 3px solid var(--sumi-warm);
}

.diary-state-label {
    font-family: 'Space Mono', monospace;
    font-size: 0.58rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--warm-gray);
    margin-bottom: 6px;
}

.diary-state-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.diary-stat {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.diary-stat-num {
    font-family: 'DM Serif Display', Georgia, serif;
    font-size: 1.3rem;
    line-height: 1;
}

.diary-state--before .diary-stat-num {
    color: var(--beni);
}

.diary-state--after .diary-stat-num {
    color: var(--sumi-warm);
}

.diary-stat-label {
    font-size: 0.7rem;
    color: var(--ink-faded);
}

.diary-arrow {
    text-align: center;
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    color: var(--warm-gray);
    opacity: 0.5;
}

.diary-lesson {
    font-family: 'Instrument Serif', Georgia, serif;
    font-style: italic;
    font-size: 0.92rem;
    color: var(--sumi);
    line-height: 1.6;
    padding: 14px 0 0;
    border-top: 1px solid var(--border-light);
    opacity: 0.8;
}

.diary-method {
    font-family: 'Space Mono', monospace;
    font-size: 0.6rem;
    color: var(--beni);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.diary-disclaimer {
    text-align: center;
    margin-top: 28px;
    font-family: 'Space Mono', monospace;
    font-size: 0.6rem;
    color: var(--warm-gray);
    letter-spacing: 0.03em;
    opacity: 0.5;
    line-height: 1.6;
}

/* ========================================
   TSUNDOKU TRACKER
   ======================================== */
.tracker {
    background: var(--paper);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 44px 36px;
    max-width: 600px;
    margin: 0 auto;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.tracker::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--sumi-warm), var(--beni));
}

.tracker-title {
    font-family: 'DM Serif Display', Georgia, serif;
    font-size: 1.4rem;
    text-align: center;
    margin-bottom: 6px;
    color: var(--sumi);
}

.tracker-subtitle {
    text-align: center;
    font-family: 'Instrument Serif', Georgia, serif;
    font-style: italic;
    font-size: 0.92rem;
    color: var(--warm-gray);
    margin-bottom: 36px;
}

.tracker-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

@media (max-width: 480px) {
    .tracker-inputs {
        grid-template-columns: 1fr;
    }
    .tracker {
        padding: 28px 20px;
    }
}

.tracker-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.tracker-field label {
    font-family: 'Space Mono', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--warm-gray);
}

.tracker-field input[type="number"],
.tracker-field input[type="date"] {
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--cream);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    color: var(--sumi);
    outline: none;
    transition: all 0.25s ease;
    -moz-appearance: textfield;
}

.tracker-field input[type="number"]::-webkit-inner-spin-button,
.tracker-field input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.tracker-field input[type="number"]:focus,
.tracker-field input[type="date"]:focus {
    border-color: var(--beni);
    box-shadow: 0 0 0 3px var(--beni-pale);
}

.tracker-actions {
    display: flex;
    gap: 10px;
    margin-bottom: 24px;
}

@media (max-width: 480px) {
    .tracker-actions {
        flex-direction: column;
    }
}

.btn-tracker {
    flex: 1;
    padding: 14px 20px;
    border-radius: var(--radius-md);
    border: none;
    font-family: 'Space Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s var(--ease-out);
}

.btn-tracker--primary {
    background: var(--sumi);
    color: var(--cream);
}

.btn-tracker--primary:hover {
    background: var(--ink);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(44, 36, 32, 0.15);
}

.btn-tracker--secondary {
    background: var(--cream-mid);
    color: var(--sumi-warm);
    border: 1px solid var(--border);
}

.btn-tracker--secondary:hover {
    background: var(--cream-dark);
    transform: translateY(-2px);
}

.tracker-divider {
    width: 100%;
    height: 1px;
    background: var(--border);
    margin: 24px 0;
}

.tracker-progress {
    display: none;
}

.tracker-progress.show {
    display: block;
    animation: resultReveal 0.5s var(--ease-out);
}

.tracker-progress-title {
    font-family: 'DM Serif Display', Georgia, serif;
    font-size: 1.1rem;
    color: var(--sumi);
    margin-bottom: 16px;
    text-align: center;
}

.tracker-comparison {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.tracker-metric {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    background: var(--cream);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
}

.tracker-metric-label {
    font-family: 'Space Mono', monospace;
    font-size: 0.65rem;
    color: var(--warm-gray);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.tracker-metric-change {
    font-family: 'DM Serif Display', Georgia, serif;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.tracker-metric-change.improved {
    color: #3B7A57;
}

.tracker-metric-change.worse {
    color: var(--beni);
}

.tracker-metric-change.same {
    color: var(--warm-gray);
}

.tracker-goal-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-light);
}

.tracker-goal-title {
    font-family: 'Space Mono', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--warm-gray);
    margin-bottom: 12px;
}

.tracker-goal-row {
    display: flex;
    gap: 10px;
    align-items: flex-end;
}

@media (max-width: 480px) {
    .tracker-goal-row {
        flex-direction: column;
        align-items: stretch;
    }
}

.tracker-goal-row .tracker-field {
    flex: 1;
}

.tracker-goal-row .btn-tracker {
    flex: none;
    padding: 12px 18px;
    align-self: flex-end;
}

.tracker-goal-display {
    display: none;
    margin-top: 16px;
    padding: 14px 16px;
    background: var(--beni-pale);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--beni);
}

.tracker-goal-display.show {
    display: block;
    animation: resultReveal 0.4s var(--ease-out);
}

.tracker-goal-display p {
    font-size: 0.88rem;
    color: var(--sumi-warm);
    line-height: 1.6;
}

.tracker-goal-display strong {
    color: var(--beni);
    font-weight: 600;
}

.tracker-saved-date {
    text-align: center;
    margin-top: 14px;
    font-family: 'Space Mono', monospace;
    font-size: 0.58rem;
    color: var(--warm-gray);
    opacity: 0.6;
}

/* ========================================
   7-DAY CHALLENGE
   ======================================== */
.challenge-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    max-width: 600px;
    margin: 0 auto 32px;
}

@media (min-width: 640px) {
    .challenge-grid {
        grid-template-columns: 1fr 1fr;
        gap: 14px;
    }
    .challenge-card:last-child {
        grid-column: 1 / -1;
    }
}

.challenge-card {
    background: var(--paper);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px 22px;
    display: flex;
    gap: 14px;
    align-items: flex-start;
    transition: all 0.4s var(--ease-out);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    user-select: none;
}

.challenge-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-light);
}

.challenge-card.completed {
    background: rgba(59, 122, 87, 0.04);
    border-color: rgba(59, 122, 87, 0.2);
}

.challenge-card.completed::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 3px;
    background: #3B7A57;
}

.challenge-checkbox {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: 2px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.3s var(--ease-spring);
    margin-top: 2px;
}

.challenge-card.completed .challenge-checkbox {
    background: #3B7A57;
    border-color: #3B7A57;
}

.challenge-checkbox-check {
    width: 12px;
    height: 12px;
    stroke: white;
    stroke-width: 3;
    fill: none;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.challenge-card.completed .challenge-checkbox-check {
    opacity: 1;
}

.challenge-content {
    flex: 1;
}

.challenge-day {
    font-family: 'Space Mono', monospace;
    font-size: 0.58rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--beni);
    margin-bottom: 4px;
}

.challenge-card.completed .challenge-day {
    color: #3B7A57;
}

.challenge-task {
    font-size: 0.88rem;
    color: var(--ink-light);
    line-height: 1.6;
}

.challenge-card.completed .challenge-task {
    color: var(--ink-faded);
}

.challenge-progress-bar {
    max-width: 600px;
    margin: 0 auto 28px;
    text-align: center;
}

.challenge-progress-track {
    width: 100%;
    height: 6px;
    background: var(--cream-dark);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 10px;
}

.challenge-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--beni), #3B7A57);
    border-radius: 3px;
    transition: width 0.6s var(--ease-out);
    width: 0;
}

.challenge-progress-text {
    font-family: 'Space Mono', monospace;
    font-size: 0.65rem;
    color: var(--warm-gray);
    letter-spacing: 0.04em;
}

.challenge-progress-text strong {
    color: var(--beni);
    font-weight: 700;
}

.challenge-cta {
    max-width: 600px;
    margin: 0 auto;
    background: var(--sumi);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.challenge-cta::before {
    content: '挑';
    position: absolute;
    font-family: 'Noto Serif JP', serif;
    font-size: 200px;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.015);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.challenge-cta h4 {
    font-size: 1.2rem;
    color: var(--cream);
    margin-bottom: 8px;
    position: relative;
}

.challenge-cta p {
    font-family: 'Instrument Serif', Georgia, serif;
    font-style: italic;
    font-size: 0.88rem;
    color: rgba(250, 246, 240, 0.5);
    margin-bottom: 20px;
    line-height: 1.6;
    position: relative;
}

.challenge-cta-form {
    display: flex;
    gap: 10px;
    max-width: 380px;
    margin: 0 auto;
    position: relative;
}

.challenge-cta-form input[type="email"] {
    flex: 1;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(250, 246, 240, 0.1);
    background: rgba(250, 246, 240, 0.05);
    color: var(--cream);
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    outline: none;
    transition: all 0.3s ease;
}

.challenge-cta-form input[type="email"]::placeholder {
    color: rgba(250, 246, 240, 0.3);
}

.challenge-cta-form input[type="email"]:focus {
    border-color: var(--beni);
    background: rgba(250, 246, 240, 0.08);
}

.challenge-cta-form button {
    padding: 12px 20px;
    border-radius: var(--radius-md);
    border: none;
    background: var(--beni);
    color: white;
    font-family: 'Space Mono', monospace;
    font-size: 0.68rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.challenge-cta-form button:hover {
    background: var(--beni-light);
    transform: translateY(-1px);
}

@media (max-width: 480px) {
    .challenge-cta-form {
        flex-direction: column;
    }
    .challenge-cta {
        padding: 24px 20px;
    }
}

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {
    .section-nav, .hero-scroll, .tab-bar-wrapper, .calculator-section,
    .newsletter-section, .reading-progress { display: none; }
    .reveal, .reveal-left { opacity: 1; transform: none; }
    body { background: white; color: black; }
}