/* ===== DESIGN TOKENS ===== */
:root {
    --ink-black: #0f0e0d;
    --charcoal: #2a2724;
    --charcoal-light: #3a3530;
    --cinnabar: #b83a2f;
    --cinnabar-dark: #8b1a1a;
    --gold: #c9a961;
    --gold-dim: #a0844a;
    --jade-gray: #6e7d82;
    --parchment: #f0ebe3;
    --parchment-dim: #d4cfc7;
    --ink-wash: #a39e98;
    --success-bronze: #8c6239;
    --warning-amber: #d4953a;
    --font-cn: 'Noto Serif SC', 'Source Han Serif SC', 'SimSun', serif;
    --font-en: 'Cormorant Garamond', 'Georgia', serif;
    --font-body-en: 'Source Serif 4', 'Georgia', serif;
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-dramatic: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: var(--font-cn);
    background: var(--ink-black);
    color: var(--parchment);
    line-height: 1.8;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
::selection { background: var(--cinnabar); color: var(--parchment); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--ink-black); }
::-webkit-scrollbar-thumb { background: var(--charcoal-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--gold-dim); }

/* ===== NAVIGATION ===== */
.nav-bar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    height: 64px;
    background: rgba(15, 14, 13, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(201, 169, 97, 0.08);
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 24px;
    transition: transform 0.4s var(--ease-out-expo);
}
.nav-bar.hidden { transform: translateY(-100%); }
.nav-logo {
    font-family: var(--font-cn);
    font-size: 18px; font-weight: 700;
    color: var(--gold);
    letter-spacing: 0.15em;
    cursor: pointer;
}
.nav-logo span { color: var(--cinnabar); }
.nav-links {
    display: flex; gap: 4px; list-style: none;
    overflow-x: auto; -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}
.nav-links::-webkit-scrollbar { display: none; }
.nav-link {
    display: flex; align-items: center; gap: 6px;
    padding: 8px 14px; border-radius: 4px;
    font-size: 13px; color: var(--ink-wash);
    white-space: nowrap;
    transition: all 0.3s ease;
    position: relative;
}
.nav-link:hover { color: var(--parchment); background: rgba(255,255,255,0.04); }
.nav-link.active { color: var(--gold); }
.nav-link.active::after {
    content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
    width: 16px; height: 2px; background: var(--gold); border-radius: 1px;
}
.nav-link .link-cn { font-family: var(--font-cn); }
.nav-link .link-en { font-family: var(--font-en); font-style: italic; font-size: 11px; opacity: 0.6; }
.nav-progress {
    position: absolute; bottom: 0; left: 0; height: 2px;
    background: linear-gradient(90deg, var(--cinnabar), var(--gold));
    transition: width 0.6s var(--ease-out-expo);
}
.lang-toggle {
    display: flex; background: var(--charcoal); border-radius: 4px; overflow: hidden;
    border: 1px solid rgba(201, 169, 97, 0.15);
}
.lang-btn {
    padding: 6px 12px; font-size: 12px; cursor: pointer;
    background: transparent; color: var(--ink-wash); border: none;
    font-family: var(--font-cn); transition: all 0.3s ease;
}
.lang-btn.active { background: var(--cinnabar); color: var(--parchment); }
.nav-toggle {
    display: none; background: none; border: none; color: var(--parchment);
    font-size: 24px; cursor: pointer; padding: 4px;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 32px; border-radius: 4px;
    font-size: 15px; font-family: var(--font-cn);
    cursor: pointer; transition: all 0.4s var(--ease-out-expo);
    border: none;
}
.btn-primary { background: var(--cinnabar); color: var(--parchment); }
.btn-primary:hover {
    background: #cc4438;
    box-shadow: 0 0 30px rgba(184, 58, 47, 0.3);
    transform: translateY(-2px);
}
.btn-secondary { background: transparent; color: var(--gold); border: 1px solid var(--gold); }
.btn-secondary:hover {
    background: rgba(201, 169, 97, 0.08);
    border-color: var(--parchment); color: var(--parchment);
}
.submit-btn {
    margin-top: 24px; padding: 12px 32px;
    background: var(--cinnabar); color: var(--parchment);
    border: none; border-radius: 4px;
    font-family: var(--font-cn); font-size: 15px;
    cursor: pointer; transition: all 0.3s ease;
}
.submit-btn:hover { background: #cc4438; box-shadow: 0 0 20px rgba(184, 58, 47, 0.3); }
.submit-btn:disabled { background: var(--charcoal-light); color: var(--jade-gray); cursor: not-allowed; box-shadow: none; }

/* ===== SECTION HEADER ===== */
.section-header { text-align: center; margin-bottom: 64px; }
.section-header .label {
    font-family: var(--font-en); font-size: 13px;
    color: var(--gold); letter-spacing: 0.25em;
    text-transform: uppercase; margin-bottom: 12px;
}
.section-header h2 {
    font-family: var(--font-cn); font-size: clamp(28px, 5vw, 42px);
    font-weight: 700; letter-spacing: 0.08em;
}
.section-header .en {
    font-family: var(--font-en); font-size: clamp(16px, 2.5vw, 22px);
    font-style: italic; color: var(--gold-dim); margin-top: 8px;
}

/* ===== CHAPTER CARDS (Homepage) ===== */
.chapter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}
.chapter-card {
    background: linear-gradient(145deg, var(--charcoal) 0%, #1f1c19 100%);
    border: 1px solid rgba(201, 169, 97, 0.08);
    border-radius: 4px; padding: 32px 28px;
    position: relative; overflow: hidden;
    transition: all 0.5s var(--ease-out-expo);
    cursor: pointer; display: block;
}
.chapter-card:hover {
    border-color: rgba(201, 169, 97, 0.25);
    box-shadow: 0 12px 40px -8px rgba(0,0,0,0.6);
    transform: translateY(-4px);
}
.chapter-card::before {
    content: ''; position: absolute; top: 0; left: 0;
    width: 4px; height: 100%;
    background: var(--chapter-color, var(--cinnabar));
    opacity: 0; transition: opacity 0.4s ease;
}
.chapter-card:hover::before { opacity: 1; }
.card-number {
    font-family: var(--font-cn); font-size: 48px; font-weight: 900;
    color: rgba(201, 169, 97, 0.08); line-height: 1; margin-bottom: 8px;
}
.card-seal {
    width: 40px; height: 40px;
    border: 1.5px solid var(--chapter-color, var(--gold));
    border-radius: 2px;
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 16px; color: var(--chapter-color, var(--gold));
    font-weight: 700; font-family: var(--font-cn);
    margin-bottom: 16px; transform: rotate(-3deg);
}
.card-title-cn { font-family: var(--font-cn); font-size: 22px; font-weight: 700; margin-bottom: 4px; letter-spacing: 0.06em; }
.card-title-en { font-family: var(--font-en); font-size: 15px; font-style: italic; color: var(--gold-dim); margin-bottom: 12px; }
.card-subtitle { font-size: 13px; color: var(--ink-wash); margin-bottom: 16px; line-height: 1.6; }
.card-quote {
    font-family: var(--font-cn); font-size: 14px;
    color: var(--jade-gray); line-height: 1.7;
    border-left: 2px solid var(--chapter-color, var(--gold));
    padding-left: 12px; margin-top: 16px;
}
.card-quote .en { font-family: var(--font-en); font-style: italic; font-size: 13px; color: rgba(110, 125, 130, 0.7); margin-top: 4px; display: block; }

/* ===== CHAPTER PAGE LAYOUT ===== */
.chapter-hero {
    min-height: 50vh;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    text-align: center; padding: 100px 24px 60px;
    position: relative; overflow: hidden;
}
.chapter-hero::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at center bottom, rgba(184,58,47,0.08) 0%, transparent 60%);
}
.chapter-hero-content { position: relative; z-index: 2; max-width: 800px; }
.chapter-badge { display: inline-flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.chapter-num {
    font-family: var(--font-cn); font-size: 14px;
    color: var(--gold); letter-spacing: 0.2em;
    border: 1px solid var(--gold-dim); padding: 4px 12px; border-radius: 2px;
}
.chapter-source { font-family: var(--font-cn); font-size: 13px; color: var(--jade-gray); }
.chapter-title-cn {
    font-family: var(--font-cn); font-size: clamp(36px, 7vw, 56px);
    font-weight: 900; letter-spacing: 0.12em; margin-bottom: 8px;
}
.chapter-title-en {
    font-family: var(--font-en); font-size: clamp(18px, 3vw, 28px);
    font-weight: 400; font-style: italic;
    color: var(--gold); letter-spacing: 0.06em;
}
.chapter-theme {
    font-size: 14px; color: var(--ink-wash);
    margin-top: 12px; letter-spacing: 0.2em;
}
.chapter-nav-links {
    display: flex; gap: 16px; margin-top: 32px; flex-wrap: wrap; justify-content: center;
}
.chapter-nav-links a {
    font-size: 14px; color: var(--ink-wash);
    transition: color 0.3s ease;
}
.chapter-nav-links a:hover { color: var(--gold); }

/* ===== CONTENT SECTIONS ===== */
.chapter-content {
    max-width: 1000px; margin: 0 auto;
    padding: 0 24px 80px;
}
.content-section { margin-bottom: 64px; }
.section-label {
    font-family: var(--font-en); font-size: 12px;
    color: var(--gold); letter-spacing: 0.2em;
    text-transform: uppercase; margin-bottom: 20px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(201, 169, 97, 0.1);
}

/* Classical Text Block */
.classical-block {
    display: grid; grid-template-columns: 1fr 1fr; gap: 32px;
    margin-bottom: 48px;
}
.text-cn, .text-en { padding: 32px; border-radius: 4px; }
.text-cn {
    background: linear-gradient(145deg, rgba(42, 39, 36, 0.6), rgba(31, 28, 25, 0.6));
    border: 1px solid rgba(201, 169, 97, 0.1);
}
.text-en {
    background: linear-gradient(145deg, rgba(42, 39, 36, 0.3), rgba(31, 28, 25, 0.3));
    border: 1px solid rgba(201, 169, 97, 0.06);
}
.text-label {
    font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase;
    color: var(--gold); margin-bottom: 16px; font-family: var(--font-en);
}
.text-cn p { font-family: var(--font-cn); font-size: 20px; font-weight: 600; line-height: 2; letter-spacing: 0.08em; }
.text-en p { font-family: var(--font-en); font-size: 17px; font-style: italic; line-height: 1.8; color: var(--parchment-dim); }

/* Case Studies */
.case-tabs {
    display: flex; gap: 4px; margin-bottom: 24px;
    border-bottom: 1px solid rgba(201, 169, 97, 0.1);
}
.case-tab {
    padding: 10px 20px; font-size: 14px;
    background: none; border: none; color: var(--ink-wash);
    font-family: var(--font-cn); cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}
.case-tab:hover { color: var(--parchment); }
.case-tab.active { color: var(--gold); border-bottom-color: var(--gold); }
.case-panel { display: none; animation: fadeUp 0.5s var(--ease-out-expo); }
.case-panel.active { display: block; }
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}
.case-content {
    padding: 28px; border-radius: 4px;
    background: linear-gradient(145deg, rgba(42, 39, 36, 0.4), rgba(31, 28, 25, 0.4));
    border: 1px solid rgba(201, 169, 97, 0.06);
}
.case-content h4 { font-family: var(--font-cn); font-size: 18px; font-weight: 700; margin-bottom: 4px; }
.case-content .en-title { font-family: var(--font-en); font-size: 15px; font-style: italic; color: var(--gold-dim); margin-bottom: 16px; }
.case-content p { font-size: 15px; line-height: 1.9; color: var(--parchment-dim); margin-bottom: 12px; }
.case-content p.en { font-family: var(--font-body-en); font-size: 14px; color: var(--ink-wash); }

/* Key Takeaway */
.takeaway {
    margin-top: 40px; padding: 24px 28px;
    border-left: 3px solid var(--gold);
    background: rgba(201, 169, 97, 0.04);
    border-radius: 0 4px 4px 0;
}
.takeaway .cn { font-family: var(--font-cn); font-size: 17px; font-weight: 600; color: var(--parchment); margin-bottom: 8px; }
.takeaway .en { font-family: var(--font-en); font-size: 15px; font-style: italic; color: var(--gold-dim); }

/* ===== INTERACTIVE COMPONENTS ===== */
.interactive-section {
    margin-top: 60px; padding: 40px 32px;
    background: linear-gradient(145deg, var(--charcoal), #1a1816);
    border: 1px solid rgba(201, 169, 97, 0.12);
    border-radius: 4px;
}
.interactive-section h3 { font-family: var(--font-cn); font-size: 20px; font-weight: 700; margin-bottom: 4px; }
.interactive-section .en-subtitle { font-family: var(--font-en); font-size: 15px; font-style: italic; color: var(--gold-dim); margin-bottom: 24px; }

/* Star Rating */
.rating-group { margin-bottom: 20px; }
.rating-label { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 8px; }
.rating-label .cn { font-size: 15px; }
.rating-label .en { font-family: var(--font-en); font-size: 13px; color: var(--ink-wash); font-style: italic; }
.stars { display: flex; gap: 6px; }
.star {
    width: 32px; height: 32px; cursor: pointer;
    border: 1.5px solid var(--gold-dim); border-radius: 2px;
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 16px; color: transparent;
    transition: all 0.2s ease; background: transparent;
}
.star:hover, .star.active { background: var(--cinnabar); border-color: var(--cinnabar); color: var(--parchment); transform: scale(1.1); }
.star.active { animation: star-pop 0.3s ease; }
@keyframes star-pop { 0% { transform: scale(1.3); } 100% { transform: scale(1.1); } }

/* Result Panel */
.result-panel { margin-top: 24px; padding: 24px; border-radius: 4px; display: none; animation: fadeUp 0.5s var(--ease-out-expo); }
.result-panel.show { display: block; }
.result-panel.excellent { background: rgba(140, 98, 57, 0.15); border: 1px solid var(--success-bronze); }
.result-panel.qualified { background: rgba(212, 149, 58, 0.1); border: 1px solid var(--warning-amber); }
.result-panel.failed { background: rgba(139, 26, 26, 0.15); border: 1px solid var(--cinnabar-dark); }
.result-score { font-family: var(--font-cn); font-size: 48px; font-weight: 900; color: var(--gold); text-align: center; margin-bottom: 8px; }
.result-label { text-align: center; font-size: 16px; color: var(--parchment); margin-bottom: 12px; }
.result-msg { font-size: 14px; color: var(--ink-wash); text-align: center; line-height: 1.7; }

/* Simulator */
.sim-scenario {
    padding: 24px; background: rgba(0,0,0,0.3);
    border: 1px solid rgba(201, 169, 97, 0.08); border-radius: 4px; margin-bottom: 20px;
}
.sim-scenario p { font-size: 15px; line-height: 1.8; color: var(--parchment-dim); margin-bottom: 16px; }
.sim-scenario .en { font-family: var(--font-body-en); font-size: 14px; color: var(--ink-wash); }
.sim-signals { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.signal-tag {
    padding: 6px 14px; border-radius: 2px; font-size: 13px; cursor: pointer;
    background: rgba(42, 39, 36, 0.6); border: 1px solid rgba(201, 169, 97, 0.15);
    color: var(--ink-wash); transition: all 0.3s ease;
}
.signal-tag:hover { border-color: var(--gold-dim); color: var(--parchment); }
.signal-tag.revealed { background: rgba(184, 58, 47, 0.15); border-color: var(--cinnabar); color: var(--parchment); }
.sim-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.sim-btn {
    padding: 10px 24px; border-radius: 4px;
    font-family: var(--font-cn); font-size: 14px;
    cursor: pointer; border: none; transition: all 0.3s ease;
}
.sim-btn.attack { background: var(--cinnabar); color: var(--parchment); }
.sim-btn.avoid { background: var(--charcoal); color: var(--gold); border: 1px solid var(--gold-dim); }
.sim-btn:hover { transform: translateY(-2px); }
.sim-result { margin-top: 16px; padding: 16px; border-radius: 4px; display: none; font-size: 14px; line-height: 1.7; }
.sim-result.show { display: block; animation: fadeUp 0.4s ease; }
.sim-result.correct { background: rgba(140, 98, 57, 0.15); border: 1px solid var(--success-bronze); }
.sim-result.wrong { background: rgba(139, 26, 26, 0.12); border: 1px solid var(--cinnabar-dark); }

/* Deployment Game */
.deploy-area { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.pool-label, .grid-label { font-size: 13px; color: var(--gold); letter-spacing: 0.15em; margin-bottom: 12px; font-family: var(--font-en); text-transform: uppercase; }
.talent-items { display: flex; flex-wrap: wrap; gap: 8px; }
.talent-chip {
    padding: 8px 16px; border-radius: 2px; font-family: var(--font-cn); font-size: 14px;
    background: var(--charcoal); border: 1px solid rgba(201, 169, 97, 0.15);
    cursor: grab; transition: all 0.3s ease; user-select: none;
}
.talent-chip:hover { border-color: var(--gold); transform: translateY(-2px); }
.talent-chip.placed { opacity: 0.4; cursor: default; }
.position-slots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.pos-slot {
    padding: 12px; min-height: 60px;
    border: 1.5px dashed rgba(201, 169, 97, 0.2); border-radius: 4px;
    text-align: center; font-size: 12px; color: var(--jade-gray);
    transition: all 0.3s ease; cursor: pointer;
}
.pos-slot.highlight { border-color: var(--gold); background: rgba(201, 169, 97, 0.05); }
.pos-slot .pos-name { font-family: var(--font-cn); margin-bottom: 4px; }
.pos-slot .pos-en { font-family: var(--font-en); font-size: 11px; font-style: italic; }
.pos-slot .placed-talent {
    margin-top: 6px; padding: 4px 8px;
    background: var(--cinnabar); border-radius: 2px;
    font-size: 12px; color: var(--parchment); display: inline-block;
}
.pos-slot .placed-talent.perfect { background: var(--success-bronze); }
.pos-slot .placed-talent.wrong { background: var(--cinnabar-dark); }
.deploy-score { margin-top: 16px; text-align: center; font-family: var(--font-cn); font-size: 18px; }
.deploy-score .score-val { color: var(--gold); font-weight: 700; font-size: 32px; }

/* Radar Chart */
.radar-container { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; }
.radar-chart { width: 100%; max-width: 360px; margin: 0 auto; aspect-ratio: 1; }
.radar-chart svg { width: 100%; height: 100%; }
.slider-group { margin-bottom: 12px; }
.slider-label { display: flex; justify-content: space-between; font-size: 13px; margin-bottom: 6px; }
.slider-label .en { font-family: var(--font-en); font-style: italic; color: var(--ink-wash); }
.slider-label .val { color: var(--gold); font-weight: 700; }
input[type="range"] {
    width: 100%; -webkit-appearance: none; height: 4px;
    background: var(--charcoal-light); border-radius: 2px; outline: none;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none; width: 18px; height: 18px;
    background: var(--cinnabar); border-radius: 50%; cursor: pointer;
    border: 2px solid var(--parchment);
}

/* Crisis Tree */
.crisis-node {
    padding: 24px; background: rgba(0,0,0,0.3);
    border: 1px solid rgba(201, 169, 97, 0.08);
    border-radius: 4px; margin-bottom: 16px; display: none;
}
.crisis-node.active { display: block; animation: fadeUp 0.5s ease; }
.crisis-node h4 { font-family: var(--font-cn); font-size: 18px; margin-bottom: 12px; color: var(--gold); }
.crisis-node p { font-size: 15px; line-height: 1.8; margin-bottom: 16px; color: var(--parchment-dim); }
.crisis-choices { display: flex; flex-wrap: wrap; gap: 10px; }
.crisis-choice {
    padding: 10px 20px; border-radius: 4px;
    font-family: var(--font-cn); font-size: 14px;
    cursor: pointer; transition: all 0.3s ease;
    background: var(--charcoal); color: var(--parchment);
    border: 1px solid rgba(201, 169, 97, 0.15);
}
.crisis-choice:hover {
    border-color: var(--gold); transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}

/* Motivation Workshop */
.mot-step {
    padding: 20px; margin-bottom: 16px;
    background: rgba(0,0,0,0.2); border-radius: 4px;
    border: 1px solid rgba(201, 169, 97, 0.06);
}
.mot-step h4 { font-family: var(--font-cn); font-size: 16px; color: var(--gold); margin-bottom: 12px; }
.tool-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; margin-top: 12px; }
.tool-chip {
    padding: 10px; text-align: center; border-radius: 4px;
    font-size: 13px; cursor: pointer;
    background: var(--charcoal); border: 1px solid rgba(201, 169, 97, 0.1);
    transition: all 0.3s ease;
}
.tool-chip:hover { border-color: var(--gold); }
.tool-chip.selected { background: var(--cinnabar); border-color: var(--cinnabar); }
.tool-chip .tool-cn { font-family: var(--font-cn); }
.tool-chip .tool-en { font-family: var(--font-en); font-size: 11px; font-style: italic; color: var(--ink-wash); margin-top: 2px; }
.tool-chip.selected .tool-en { color: var(--parchment-dim); }
.edict-preview {
    margin-top: 20px; padding: 24px;
    background: rgba(0,0,0,0.3);
    border: 1px solid rgba(201, 169, 97, 0.12);
    border-radius: 4px; display: none;
}
.edict-preview.show { display: block; animation: fadeUp 0.5s ease; }
.edict-preview h4 { font-family: var(--font-cn); font-size: 18px; color: var(--gold); margin-bottom: 12px; }
.edict-preview p { font-size: 14px; line-height: 1.8; color: var(--ink-wash); }

/* ===== FOOTER ===== */
.site-footer {
    padding: 60px 24px 40px;
    border-top: 1px solid rgba(201, 169, 97, 0.08);
    text-align: center;
}
.footer-quote { font-family: var(--font-cn); font-size: 18px; color: var(--parchment-dim); margin-bottom: 8px; letter-spacing: 0.06em; }
.footer-quote-en { font-family: var(--font-en); font-size: 15px; font-style: italic; color: var(--gold-dim); margin-bottom: 32px; }
.footer-copy { font-size: 13px; color: var(--jade-gray); }
.footer-copy a { color: var(--gold-dim); }
.section-sep { width: 100%; max-width: 200px; margin: 0 auto; height: 1px; background: linear-gradient(90deg, transparent, var(--gold-dim), transparent); }

/* ===== HERO SPECIFIC ===== */
.hero {
    position: relative; min-height: 100vh;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    text-align: center; padding: 80px 24px 60px; overflow: hidden;
}
.hero-canvas { position: absolute; inset: 0; z-index: 0; }
.hero-overlay { position: absolute; inset: 0; z-index: 1; background: radial-gradient(ellipse at center, transparent 0%, var(--ink-black) 75%); }
.hero-content { position: relative; z-index: 2; max-width: 800px; }
.hero-seal {
    width: 80px; height: 80px; margin: 0 auto 32px;
    border: 2px solid var(--cinnabar); border-radius: 4px;
    display: flex; align-items: center; justify-content: center;
    font-size: 36px; color: var(--cinnabar); font-weight: 900;
    font-family: var(--font-cn); transform: rotate(-5deg);
    animation: seal-float 6s ease-in-out infinite;
}
@keyframes seal-float {
    0%, 100% { transform: rotate(-5deg) translateY(0); }
    50% { transform: rotate(-3deg) translateY(-8px); }
}
.hero-title-cn {
    font-family: var(--font-cn); font-size: clamp(40px, 8vw, 72px);
    font-weight: 900; letter-spacing: 0.12em; color: var(--parchment);
    margin-bottom: 12px; text-shadow: 0 0 80px rgba(184, 58, 47, 0.2);
}
.hero-title-en { font-family: var(--font-en); font-size: clamp(18px, 3vw, 28px); font-weight: 400; font-style: italic; color: var(--gold); letter-spacing: 0.08em; margin-bottom: 8px; }
.hero-subtitle { font-family: var(--font-cn); font-size: clamp(14px, 2vw, 18px); color: var(--ink-wash); letter-spacing: 0.3em; margin-bottom: 48px; }
.hero-slogan { font-family: var(--font-en); font-size: 14px; color: var(--jade-gray); letter-spacing: 0.2em; text-transform: uppercase; }
.hero-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-top: 40px; }
.scroll-hint {
    position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
    z-index: 2; display: flex; flex-direction: column; align-items: center; gap: 8px;
    color: var(--jade-gray); font-size: 12px; letter-spacing: 0.15em;
    animation: scroll-bounce 2s ease-in-out infinite;
}
.scroll-hint .arrow { font-size: 18px; }
@keyframes scroll-bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.6; }
    50% { transform: translateX(-50%) translateY(6px); opacity: 1; }
}

/* ===== ANIMATIONS ===== */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo); }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
    .nav-links { display: none; }
    .nav-toggle { display: block; }
    .nav-links.open {
        display: flex; flex-direction: column;
        position: absolute; top: 64px; left: 0; right: 0;
        background: rgba(15, 14, 13, 0.98);
        padding: 16px; gap: 4px;
        border-bottom: 1px solid rgba(201, 169, 97, 0.1);
    }
    .classical-block { grid-template-columns: 1fr; }
    .deploy-area { grid-template-columns: 1fr; }
    .radar-container { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
    .hero { padding: 80px 16px 40px; }
    .hero-cta { flex-direction: column; align-items: center; }
    .chapter-grid { grid-template-columns: 1fr; }
    .chapter-content { padding-left: 16px; padding-right: 16px; }
    .position-slots { grid-template-columns: repeat(2, 1fr); }
    .lang-toggle { display: none; }
    .interactive-section { padding: 24px 16px; }
}