:root {
    --bg-0: #060a12;
    --bg-1: #0b1220;
    --bg-2: #0f1a2e;
    --bg-3: #152338;
    --line: rgba(148, 187, 255, 0.1);
    --line-2: rgba(148, 187, 255, 0.22);
    --line-3: rgba(148, 187, 255, 0.45);
    --cyan: #22d3ee;
    --sky: #60a5fa;
    --violet: #a78bfa;
    --pink: #f472b6;
    --amber: #fbbf24;
    --text-0: #eef3ff;
    --text-1: #b6c4e2;
    --text-2: #7e90b8;
    --text-3: #4a5a7d;
    --radius-s: 8px;
    --radius-m: 14px;
    --radius-l: 20px;
    --radius-xl: 28px;
    --shadow-card: 0 10px 34px rgba(2, 6, 16, 0.55);
    --shadow-card-hover: 0 22px 56px rgba(2, 6, 16, 0.7), 0 0 0 1px rgba(148, 187, 255, 0.12);
    --shadow-glow: 0 0 28px rgba(34, 211, 238, 0.25);
    --shadow-glow-violet: 0 0 28px rgba(167, 139, 250, 0.25);
    --grad-primary: linear-gradient(135deg, #22d3ee 0%, #60a5fa 50%, #a78bfa 100%);
    --font-display: 'Noto Serif SC', 'Songti SC', 'SimSun', Georgia, serif;
    --font-body: 'Inter', 'PingFang SC', 'Noto Sans SC', 'Segoe UI', system-ui, sans-serif;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-1);
    background-image:
        radial-gradient(ellipse at 12% 8%, rgba(34, 211, 238, 0.08) 0%, transparent 55%),
        radial-gradient(ellipse at 88% 18%, rgba(167, 139, 250, 0.09) 0%, transparent 52%),
        radial-gradient(ellipse at 50% 100%, rgba(96, 165, 250, 0.07) 0%, transparent 55%);
    color: var(--text-0);
    line-height: 1.7;
    overflow-x: hidden;
    min-height: 100vh;
    font-size: 16px;
}

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-0);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--cyan), var(--violet));
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--sky), var(--pink));
}

#pulse {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0;
    background: var(--grad-primary);
    border-radius: 0 3px 3px 0;
    z-index: 1200;
    box-shadow: 0 0 12px rgba(34, 211, 238, 0.6);
}

#jumpTop {
    position: fixed;
    right: 26px;
    bottom: 30px;
    width: 48px;
    height: 48px;
    border: 1px solid rgba(148, 187, 255, 0.35);
    border-radius: 50%;
    background: rgba(15, 26, 46, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--cyan);
    font-size: 1.05rem;
    cursor: pointer;
    box-shadow: var(--shadow-glow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px) scale(0.9);
    transition: all 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
    z-index: 1100;
    display: flex;
    align-items: center;
    justify-content: center;
}
#jumpTop:hover {
    transform: translateY(-3px) scale(1.05);
    background: rgba(34, 211, 238, 0.15);
    border-color: var(--cyan);
}
#jumpTop.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.fadein {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity 0.65s ease, transform 0.65s ease;
}
.fadein.in {
    opacity: 1;
    transform: none;
}

.shell {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 28px;
}

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(11, 18, 32, 0.82);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    transition: background 0.35s ease, border-color 0.35s ease;
}
.nav.scrolled {
    background: rgba(8, 13, 24, 0.95);
    border-bottom-color: var(--line-2);
}
.nav-inner {
    height: 66px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-0);
    letter-spacing: 3px;
    white-space: nowrap;
}
.nav-logo i {
    color: var(--cyan);
    font-size: 1.05rem;
    text-shadow: 0 0 14px rgba(34, 211, 238, 0.6);
}
.nav-links {
    display: flex;
    gap: 1.6rem;
    list-style: none;
    font-size: 0.88rem;
    letter-spacing: 1px;
}
.nav-links a {
    text-decoration: none;
    color: var(--text-1);
    position: relative;
    padding: 4px 0;
    transition: color 0.3s ease;
}
.nav-links a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 2px;
    background: var(--grad-primary);
    border-radius: 2px;
    transition: width 0.3s ease;
}
.nav-links a:hover {
    color: var(--text-0);
}
.nav-links a:hover::after {
    width: 100%;
}
.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--line-2);
    border-radius: var(--radius-s);
    color: var(--text-0);
    font-size: 1.05rem;
    width: 42px;
    height: 38px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

.masthead {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 150px 0 90px;
    overflow: hidden;
    background:
        radial-gradient(ellipse at 75% 20%, rgba(34, 211, 238, 0.12) 0%, transparent 55%),
        radial-gradient(ellipse at 20% 60%, rgba(167, 139, 250, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 55% 110%, rgba(96, 165, 250, 0.1) 0%, transparent 55%),
        linear-gradient(170deg, #0a1120 0%, #0b1220 50%, #0d1830 100%);
}
.masthead::before {
    content: '';
    position: absolute;
    top: -18%;
    right: -6%;
    width: 680px;
    height: 680px;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.1) 0%, transparent 66%);
    border-radius: 50%;
    pointer-events: none;
    animation: drift 9s ease-in-out infinite alternate;
}
.masthead::after {
    content: '';
    position: absolute;
    bottom: -16%;
    left: -6%;
    width: 520px;
    height: 520px;
    background: radial-gradient(circle, rgba(167, 139, 250, 0.1) 0%, transparent 64%);
    border-radius: 50%;
    pointer-events: none;
    animation: drift 11s ease-in-out infinite alternate-reverse;
}
@keyframes drift {
    0% { opacity: 0.55; transform: scale(1); }
    100% { opacity: 1; transform: scale(1.07); }
}
.particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}
.particles .particle {
    position: absolute;
    width: 3px;
    height: 3px;
    border-radius: 50%;
    animation: floatUp 14s linear infinite;
}
.particles .particle:nth-child(1) { left: 8%; top: 30%; background: rgba(34, 211, 238, 0.65); animation-delay: 0s; animation-duration: 16s; }
.particles .particle:nth-child(2) { left: 20%; top: 70%; background: rgba(96, 165, 250, 0.7); animation-delay: 3s; animation-duration: 18s; }
.particles .particle:nth-child(3) { left: 45%; top: 15%; background: rgba(167, 139, 250, 0.75); animation-delay: 6s; animation-duration: 13s; }
.particles .particle:nth-child(4) { left: 65%; top: 55%; background: rgba(244, 114, 182, 0.6); animation-delay: 2s; animation-duration: 17s; }
.particles .particle:nth-child(5) { left: 85%; top: 35%; background: rgba(251, 191, 36, 0.6); animation-delay: 7s; animation-duration: 15s; }
.particles .particle:nth-child(6) { left: 50%; top: 80%; background: rgba(34, 211, 238, 0.55); animation-delay: 4s; animation-duration: 20s; }
@keyframes floatUp {
    0% { transform: translateY(0) translateX(0); opacity: 0; }
    15% { opacity: 0.7; }
    50% { transform: translateY(-45px) translateX(18px); opacity: 0.35; }
    85% { opacity: 0.6; }
    100% { transform: translateY(-90px) translateX(-12px); opacity: 0; }
}

.masthead-inner {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 900px;
}
.kicker {
    display: inline-block;
    background: rgba(34, 211, 238, 0.08);
    color: var(--cyan);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 3px;
    padding: 6px 18px;
    border-radius: 30px;
    border: 1px solid rgba(34, 211, 238, 0.3);
    margin-bottom: 22px;
    text-transform: uppercase;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.masthead-title {
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: 6px;
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 14px;
    filter: drop-shadow(0 3px 24px rgba(34, 211, 238, 0.3));
}
.tagline {
    font-size: 1.1rem;
    color: var(--text-1);
    margin-bottom: 26px;
    font-weight: 300;
    letter-spacing: 3px;
    font-style: italic;
}
.lede {
    font-size: 0.98rem;
    color: var(--text-1);
    max-width: 640px;
    margin: 0 auto 26px;
    line-height: 1.9;
    background: rgba(21, 35, 56, 0.55);
    border: 1px solid var(--line);
    border-left: 3px solid var(--cyan);
    border-radius: var(--radius-m);
    padding: 18px 22px;
    text-align: left;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.facts {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px 26px;
    margin: 22px 0 28px;
}
.fact {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-2);
    transition: color 0.2s ease;
}
.fact:hover {
    color: var(--text-1);
}
.fact i {
    width: 18px;
    text-align: center;
    font-size: 0.9rem;
}
.fact:nth-child(1) i { color: var(--cyan); }
.fact:nth-child(2) i { color: var(--sky); }
.fact:nth-child(3) i { color: var(--amber); }
.fact:nth-child(4) i { color: var(--violet); }
.fact strong {
    color: var(--text-0);
    font-weight: 600;
}
.cta-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
    margin-bottom: 40px;
}
.cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.88rem;
    text-decoration: none;
    transition: all 0.35s cubic-bezier(0.22, 0.61, 0.36, 1);
    border: 1px solid transparent;
    cursor: pointer;
    background: transparent;
    font-family: var(--font-body);
    letter-spacing: 0.4px;
    white-space: nowrap;
}
.cta-solid {
    background: var(--grad-primary);
    color: #04121f;
    box-shadow: 0 8px 26px rgba(34, 211, 238, 0.3);
}
.cta-solid:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 38px rgba(34, 211, 238, 0.45);
    filter: brightness(1.08);
}
.cta-solid:active {
    transform: translateY(-1px);
}
.cta-ghost {
    border-color: var(--line-2);
    color: var(--text-1);
    background: rgba(15, 26, 46, 0.5);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.cta-ghost:hover {
    border-color: var(--cyan);
    color: var(--cyan);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}
.cta-ghost:active {
    transform: translateY(-1px);
}
.cover {
    width: 240px;
    margin: 0 auto 30px;
    border-radius: var(--radius-l);
    overflow: hidden;
    position: relative;
    transform: rotate(-2deg);
    box-shadow:
        0 26px 60px rgba(2, 6, 16, 0.7),
        0 0 0 1px rgba(148, 187, 255, 0.2),
        0 0 50px rgba(34, 211, 238, 0.12);
    transition: transform 0.45s cubic-bezier(0.22, 0.61, 0.36, 1), box-shadow 0.45s ease;
}
.cover:hover {
    transform: rotate(0deg) scale(1.02);
    box-shadow:
        0 34px 74px rgba(2, 6, 16, 0.8),
        0 0 0 2px rgba(34, 211, 238, 0.35),
        0 0 64px rgba(34, 211, 238, 0.18);
}
.cover-img {
    display: block;
    width: 100%;
    aspect-ratio: 1/1;
    object-fit: cover;
}
.cover-tag {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(6, 10, 18, 0.82);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(34, 211, 238, 0.35);
    padding: 4px 16px;
    border-radius: 30px;
    font-size: 0.68rem;
    letter-spacing: 1px;
    color: var(--cyan);
    z-index: 2;
    white-space: nowrap;
}
.notice {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    padding-top: 18px;
    border-top: 1px dashed var(--line-2);
    max-width: 640px;
    margin: 0 auto;
}
.notice-item {
    font-size: 0.8rem;
    color: var(--text-2);
    display: flex;
    align-items: center;
    gap: 7px;
    letter-spacing: 0.4px;
    transition: color 0.2s ease;
}
.notice-item:hover {
    color: var(--text-1);
}
.notice-item:nth-child(1) i { color: var(--amber); }
.notice-item:nth-child(2) i { color: var(--cyan); }
.notice-item:nth-child(3) i { color: var(--violet); }

.overview {
    padding: 90px 0 70px;
    background: var(--bg-1);
    border-top: 1px solid var(--line);
    position: relative;
}
.overview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 78%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.35), transparent);
}
.block-title {
    font-family: var(--font-display);
    font-size: 2.1rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 10px;
    color: var(--text-0);
}
.block-title .accent {
    display: inline-block;
    width: 52px;
    height: 3px;
    background: var(--grad-primary);
    border-radius: 3px;
    vertical-align: middle;
    margin-left: 16px;
}
.block-sub {
    color: var(--text-2);
    font-size: 0.9rem;
    margin-bottom: 42px;
    font-weight: 300;
    letter-spacing: 1.5px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.block-sub::before {
    content: '';
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 10px rgba(34, 211, 238, 0.7);
}
.overview-text {
    font-size: 0.98rem;
    color: var(--text-1);
    line-height: 1.95;
    letter-spacing: 0.3px;
    max-width: 860px;
}
.overview-text p {
    margin-bottom: 18px;
}
.overview-text .em {
    color: var(--cyan);
    font-weight: 600;
    letter-spacing: 0.5px;
}
.stat-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 38px;
}
.stat {
    background: rgba(21, 35, 56, 0.6);
    border: 1px solid var(--line);
    border-radius: var(--radius-m);
    padding: 24px 16px;
    text-align: center;
    transition: all 0.35s ease;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}
.stat::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--grad-primary);
    transition: width 0.4s ease;
}
.stat:hover::before {
    width: 72%;
}
.stat:hover {
    transform: translateY(-5px);
    border-color: var(--line-2);
    box-shadow: var(--shadow-card);
}
.stat-num {
    font-size: 2.1rem;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: 0.5px;
}
.stat:nth-child(1) .stat-num { color: var(--cyan); }
.stat:nth-child(2) .stat-num { color: var(--sky); }
.stat:nth-child(3) .stat-num { color: var(--amber); }
.stat:nth-child(4) .stat-num { color: var(--violet); }
.stat-label {
    font-size: 0.76rem;
    color: var(--text-2);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-top: 8px;
    font-weight: 500;
}

.arcs {
    padding: 80px 0 60px;
    background: var(--bg-2);
    border-top: 1px solid var(--line);
}
.arc {
    --arc: var(--cyan);
    --arc-soft: rgba(34, 211, 238, 0.12);
    display: flex;
    align-items: center;
    gap: 48px;
    margin-bottom: 44px;
}
.arc:nth-child(1) { --arc: var(--cyan); --arc-soft: rgba(34, 211, 238, 0.12); }
.arc:nth-child(2) { --arc: var(--sky); --arc-soft: rgba(96, 165, 250, 0.14); }
.arc:nth-child(3) { --arc: var(--violet); --arc-soft: rgba(167, 139, 250, 0.14); }
.arc:nth-child(4) { --arc: var(--amber); --arc-soft: rgba(251, 191, 36, 0.14); }
.arc:nth-child(even) .arc-media {
    order: 2;
}
.arc-media {
    flex: 0 0 360px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--arc);
    box-shadow:
        0 20px 48px rgba(2, 6, 16, 0.6),
        0 0 40px var(--arc-soft);
    transition: transform 0.45s cubic-bezier(0.22, 0.61, 0.36, 1), box-shadow 0.45s ease;
}
.arc-media img {
    display: block;
    width: 100%;
    aspect-ratio: 1/1;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.arc:hover .arc-media {
    transform: translateY(-6px) rotate(1deg);
    box-shadow:
        0 28px 60px rgba(2, 6, 16, 0.7),
        0 0 56px var(--arc-soft);
}
.arc:hover .arc-media img {
    transform: scale(1.05);
}
.arc-body {
    flex: 1;
    min-width: 0;
}
.arc-head {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 14px;
}
.arc-index {
    font-family: var(--font-display);
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--arc);
    opacity: 0.55;
    line-height: 1;
    letter-spacing: 1px;
}
.arc-tag {
    display: inline-block;
    font-size: 0.72rem;
    color: var(--arc);
    background: var(--arc-soft);
    border: 1px solid var(--arc);
    padding: 3px 14px;
    border-radius: 20px;
    letter-spacing: 1.5px;
    font-weight: 600;
}
.arc-body h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-0);
    margin-bottom: 12px;
    letter-spacing: 1px;
    font-family: var(--font-display);
}
.arc-body p {
    font-size: 0.92rem;
    color: var(--text-1);
    line-height: 1.9;
    letter-spacing: 0.2px;
    max-width: 600px;
}

.mechanics {
    padding: 90px 0 70px;
    background: var(--bg-1);
    border-top: 1px solid var(--line);
}
.mechanics-intro {
    font-size: 0.98rem;
    color: var(--text-1);
    line-height: 1.95;
    max-width: 820px;
    margin-bottom: 48px;
    letter-spacing: 0.3px;
}
.mechanics-intro .em {
    color: var(--cyan);
    font-weight: 600;
}
.timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}
.stage {
    position: relative;
    text-align: center;
    padding: 0 14px;
}
.stage::before {
    content: '';
    position: absolute;
    top: 22px;
    left: -50%;
    right: -50%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--line-2), transparent);
    z-index: 0;
}
.stage:first-child::before { left: 50%; }
.stage:last-child::before { right: 50%; }
.stage-no {
    position: relative;
    z-index: 2;
    width: 46px;
    height: 46px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: var(--bg-2);
    border: 2px solid var(--line-3);
    color: var(--cyan);
    font-weight: 800;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    letter-spacing: 0.5px;
    box-shadow: 0 0 18px rgba(34, 211, 238, 0.18);
    transition: all 0.35s ease;
}
.stage:hover .stage-no {
    border-color: var(--cyan);
    background: var(--grad-primary);
    color: #04121f;
    box-shadow: 0 0 26px rgba(34, 211, 238, 0.45);
    transform: scale(1.08);
}
.stage:nth-child(2) .stage-no { color: var(--sky); }
.stage:nth-child(3) .stage-no { color: var(--amber); }
.stage:nth-child(4) .stage-no { color: var(--violet); }
.stage:nth-child(2):hover .stage-no { background: linear-gradient(135deg, #60a5fa, #a78bfa); color: #04121f; }
.stage:nth-child(3):hover .stage-no { background: linear-gradient(135deg, #fbbf24, #f472b6); color: #04121f; }
.stage:nth-child(4):hover .stage-no { background: linear-gradient(135deg, #a78bfa, #f472b6); color: #04121f; }
.stage h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-0);
    margin-bottom: 10px;
    letter-spacing: 0.8px;
    font-family: var(--font-display);
}
.stage p {
    font-size: 0.86rem;
    color: var(--text-2);
    line-height: 1.8;
    letter-spacing: 0.2px;
}

.ethos {
    padding: 90px 0 70px;
    background: var(--bg-2);
    border-top: 1px solid var(--line);
}
.ethos-text {
    font-size: 0.98rem;
    color: var(--text-1);
    line-height: 1.95;
    letter-spacing: 0.3px;
    max-width: 860px;
}
.ethos-text .em {
    color: var(--cyan);
    font-weight: 600;
}
.alert {
    margin-top: 32px;
    max-width: 860px;
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.08), rgba(244, 114, 182, 0.08));
    border: 1px solid rgba(251, 191, 36, 0.3);
    border-left: 4px solid var(--amber);
    border-radius: var(--radius-m);
    padding: 24px 28px;
    transition: all 0.35s ease;
}
.alert:hover {
    box-shadow: 0 0 32px rgba(251, 191, 36, 0.14);
}
.alert-title {
    font-weight: 700;
    color: var(--amber);
    letter-spacing: 1.5px;
    margin-bottom: 10px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 9px;
}
.alert p {
    font-size: 0.9rem;
    color: var(--text-1);
    line-height: 1.85;
}

.craft {
    padding: 90px 0 70px;
    background: var(--bg-1);
    border-top: 1px solid var(--line);
}
.craft-text {
    font-size: 0.98rem;
    color: var(--text-1);
    line-height: 1.95;
    letter-spacing: 0.3px;
    max-width: 860px;
}
.craft-text .em {
    color: var(--cyan);
    font-weight: 600;
}
.tones {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 22px;
    margin-top: 38px;
}
.tone {
    background: rgba(21, 35, 56, 0.55);
    border: 1px solid var(--line);
    border-radius: var(--radius-l);
    overflow: hidden;
    transition: all 0.35s ease;
}
.tone:hover {
    transform: translateY(-6px);
    border-color: var(--line-2);
    box-shadow: var(--shadow-card-hover);
}
.tone-strip {
    height: 66px;
    display: flex;
    align-items: center;
    padding: 0 26px;
    font-size: 0.84rem;
    font-weight: 700;
    letter-spacing: 2px;
}
.tone-strip.bright {
    background: linear-gradient(120deg, rgba(34, 211, 238, 0.3), rgba(96, 165, 250, 0.14));
    color: #7deaff;
}
.tone-strip.dark {
    background: linear-gradient(120deg, #2b3a5e, #1c2742);
    color: #a9c2f0;
}
.tone-body {
    padding: 24px 26px 28px;
}
.tone-body h3 {
    font-size: 1.05rem;
    margin-bottom: 10px;
    color: var(--text-0);
    letter-spacing: 0.8px;
    font-family: var(--font-display);
}
.tone-body p {
    font-size: 0.88rem;
    color: var(--text-2);
    line-height: 1.85;
    letter-spacing: 0.2px;
}

.reel {
    padding: 90px 0 75px;
    background: var(--bg-2);
    border-top: 1px solid var(--line);
}
.reel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 18px;
}
.shot {
    position: relative;
    border-radius: var(--radius-m);
    overflow: hidden;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-card);
    aspect-ratio: 1/1;
    cursor: pointer;
    background: var(--bg-3);
    transition: border-color 0.35s ease, box-shadow 0.35s ease;
}
.shot.tall {
    aspect-ratio: 1/2.2;
}
.shot.tall .shot-cap {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    left: auto;
    right: 12px;
    bottom: auto;
    top: 12px;
    letter-spacing: 1.5px;
}
.shot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s ease;
}
.shot:hover {
    border-color: rgba(34, 211, 238, 0.4);
    box-shadow: var(--shadow-card-hover);
}
.shot:hover img {
    transform: scale(1.07);
}
.shot::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 55%, rgba(4, 8, 16, 0.62));
    opacity: 0;
    transition: opacity 0.4s;
    pointer-events: none;
}
.shot:hover::after {
    opacity: 1;
}
.shot-cap {
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 12px;
    font-size: 0.78rem;
    color: #e8f1ff;
    letter-spacing: 0.5px;
    opacity: 0;
    transform: translateY(8px);
    transition: all 0.4s;
    z-index: 2;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.6);
}
.shot:hover .shot-cap {
    opacity: 1;
    transform: none;
}

.epilogue {
    padding: 84px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(ellipse at 50% 120%, rgba(34, 211, 238, 0.12) 0%, transparent 55%),
        radial-gradient(ellipse at 20% 80%, rgba(167, 139, 250, 0.12) 0%, transparent 55%),
        linear-gradient(170deg, #0a1120 0%, #0d1830 60%, #0a1120 100%);
    border-top: 1px solid var(--line);
}
.epilogue .shell {
    max-width: 820px;
    position: relative;
    z-index: 2;
}
.epilogue-mark {
    font-size: 3.2rem;
    color: var(--cyan);
    opacity: 0.5;
    margin-bottom: 8px;
    display: block;
    line-height: 1;
    text-shadow: 0 0 24px rgba(34, 211, 238, 0.5);
}
.epilogue-quote {
    font-size: 1.08rem;
    color: var(--text-1);
    line-height: 2.05;
    letter-spacing: 0.6px;
}
.epilogue-quote .hl {
    color: var(--cyan);
    font-weight: 600;
    text-shadow: 0 0 20px rgba(34, 211, 238, 0.35);
}
.epilogue-note {
    margin-top: 24px;
    font-size: 0.82rem;
    color: var(--text-3);
    letter-spacing: 0.8px;
}

.file {
    padding: 70px 0 80px;
    background: var(--bg-1);
    border-top: 1px solid var(--line);
}
.file-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 14px 44px;
}
.file-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 15px 0;
    border-bottom: 1px dashed var(--line-2);
    transition: border-color 0.2s ease;
}
.file-item:hover {
    border-bottom-color: var(--cyan);
}
.file-item .label {
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--text-3);
    letter-spacing: 2px;
    font-weight: 600;
}
.file-item .value {
    font-size: 0.94rem;
    color: var(--text-1);
    letter-spacing: 0.3px;
}
.file-item .value i {
    color: var(--cyan);
    margin-right: 6px;
}

footer {
    padding: 34px 0;
    text-align: center;
    font-size: 0.78rem;
    color: var(--text-3);
    border-top: 1px solid var(--line);
    letter-spacing: 0.6px;
    background: var(--bg-0);
}
footer a {
    color: var(--text-3);
    text-decoration: none;
    margin: 0 10px;
    transition: color 0.2s ease;
    letter-spacing: 0.6px;
}
footer a:hover {
    color: var(--cyan);
}
footer .footer-crown {
    color: var(--cyan);
    margin-right: 6px;
    font-size: 0.75rem;
}

@media (max-width: 960px) {
    .nav-toggle {
        display: flex;
    }
    .nav-links {
        position: absolute;
        top: 66px;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: rgba(8, 13, 24, 0.98);
        border-bottom: 1px solid var(--line-2);
        padding: 8px 28px 18px;
        display: none;
    }
    .nav-links.open {
        display: flex;
    }
    .nav-links a {
        padding: 12px 0;
        border-bottom: 1px solid var(--line);
    }
    .nav-links a:last-child {
        border-bottom: none;
    }
    .masthead {
        padding: 130px 0 70px;
    }
    .masthead-title {
        font-size: 2.9rem;
    }
    .arc {
        flex-direction: column;
        gap: 26px;
        text-align: left;
    }
    .arc:nth-child(even) .arc-media {
        order: 0;
    }
    .arc-media {
        flex: 0 0 auto;
        width: 100%;
        max-width: 420px;
    }
    .arc-body {
        width: 100%;
    }
    .stat-row {
        grid-template-columns: repeat(2, 1fr);
    }
    .block-title {
        font-size: 1.7rem;
    }
    .tones {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 520px) {
    .shell {
        padding: 0 16px;
    }
    .masthead-title {
        font-size: 2.2rem;
        letter-spacing: 3px;
    }
    .tagline {
        font-size: 0.98rem;
    }
    .cta {
        padding: 10px 20px;
        font-size: 0.8rem;
    }
    .cover {
        width: 200px;
    }
    .fact {
        font-size: 0.78rem;
    }
    .stat-row {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .stat-num {
        font-size: 1.6rem;
    }
    .arc-index {
        font-size: 2rem;
    }
    .arc-body h3 {
        font-size: 1.25rem;
    }
    .timeline {
        grid-template-columns: 1fr;
    }
    .stage::before {
        display: none;
    }
    .reel-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .epilogue-quote {
        font-size: 0.95rem;
    }
    #jumpTop {
        right: 16px;
        bottom: 20px;
        width: 42px;
        height: 42px;
    }
}