/* =========================================================
   YHG ESPORTS — "SPRING WIND" design system
   Warm ivory × flame gradient × spring green.
   Light, editorial, airy. Wildfire = flame + rebirth.
   野火烧不尽 · 春风吹又生
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Rajdhani:wght@500;600;700&family=Noto+Sans+SC:wght@400;500;700;900&display=swap');

:root {
    /* surfaces — warm layered ivories */
    --bg: #faf6ef;
    --bg-1: #f4ecdf;
    --bg-2: #ffffff;
    --surface: #ffffff;
    --surface-2: #fdfaf4;
    --surface-3: #f7f0e4;
    --glass: rgba(255, 255, 255, 0.62);

    /* lines — soft warm */
    --line: rgba(58, 45, 30, 0.10);
    --line-2: rgba(58, 45, 30, 0.16);
    --line-hot: rgba(234, 88, 12, 0.42);
    --line-spring: rgba(77, 124, 15, 0.40);

    /* text — warm near-black, never pure */
    --text: #2a241d;
    --dim: #6e6557;
    --faint: #9a9082;

    /* flame palette — rich multi-hue gradient (the wildfire) */
    --amber: #fbbf24;
    --ember: #f59e0b;
    --fire: #ea580c;
    --fire-2: #f97316;
    --fire-3: #c2410c;
    --flame: #ef4444;
    --rose: #f43f5e;
    --ember-deep: #b45309;
    --fire-soft: rgba(249, 115, 22, 0.12);
    --fire-glow: rgba(249, 115, 22, 0.32);
    --fire-glow-2: rgba(234, 88, 12, 0.42);
    /* signature flame gradient */
    --flame-grad: linear-gradient(135deg, #fbbf24 0%, #f97316 38%, #ef4444 72%, #f43f5e 100%);

    /* spring palette — rebirth accent (春风吹又生) */
    --spring: #4d7c0f;
    --spring-2: #65a30d;
    --spring-3: #3f6212;
    --spring-soft: rgba(101, 163, 13, 0.12);
    --spring-glow: rgba(101, 163, 13, 0.30);

    /* type */
    --sans: "Noto Sans SC", system-ui, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
    --mono: "Rajdhani", "JetBrains Mono", ui-monospace, "SF Mono", Consolas, monospace;
    --display: "Space Grotesk", "PingFang SC", "Microsoft YaHei", sans-serif;

    /* shape */
    --r-sm: 8px;
    --r: 14px;
    --r-lg: 22px;
    --cut: polygon(0 14px, 14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);

    /* shadow — warm, soft, layered */
    --shadow-sm: 0 4px 14px rgba(120, 80, 30, 0.07), 0 1px 3px rgba(120, 80, 30, 0.04);
    --shadow: 0 14px 34px rgba(120, 80, 30, 0.11), 0 2px 6px rgba(120, 80, 30, 0.04);
    --shadow-lg: 0 30px 60px rgba(120, 80, 30, 0.16), 0 4px 12px rgba(120, 80, 30, 0.05);

    --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    color: var(--text);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.75;
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

/* layered ambient: warm flame mesh top-right, spring green bottom-left */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -2;
    pointer-events: none;
    background:
        radial-gradient(50% 45% at 92% 4%, rgba(251, 191, 36, 0.16), transparent 60%),
        radial-gradient(42% 42% at 78% 26%, rgba(239, 68, 68, 0.10), transparent 60%),
        radial-gradient(40% 40% at 8% 92%, rgba(101, 163, 13, 0.10), transparent 60%),
        linear-gradient(180deg, #faf6ef, #f6efe2 60%, #f2eadb);
}

/* faint paper grain */
body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background: repeating-linear-gradient(0deg, rgba(58, 45, 30, 0.015) 0 1px, transparent 1px 4px);
    opacity: 0.6;
}

a {
    color: inherit;
    text-decoration: none;
}

::selection {
    background: var(--fire-2);
    color: #fff;
}

/* ===================== Header ===================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 50;
    width: 100%;
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 clamp(20px, 4vw, 56px);
    background: linear-gradient(180deg, rgba(250, 246, 239, 0.86), rgba(250, 246, 239, 0.62));
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(20px) saturate(150%);
    -webkit-backdrop-filter: blur(20px) saturate(150%);
}

.site-header::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent 12%, var(--fire-2) 38%, var(--rose) 50%, var(--spring-2) 62%, transparent 88%);
    opacity: 0.55;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--display);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 0.22em;
    color: var(--text);
}

.brand img {
    width: 34px;
    height: 34px;
    object-fit: contain;
    filter: drop-shadow(0 2px 6px var(--fire-glow));
    transition: transform 0.4s var(--ease);
}

.brand:hover img {
    transform: rotate(-8deg) scale(1.06);
}

.nav-toggle { display: none; }

.nav {
    display: flex;
    align-items: center;
    gap: clamp(16px, 2.2vw, 30px);
    color: var(--dim);
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.nav a {
    position: relative;
    padding: 24px 0;
    transition: color 0.25s var(--ease);
}

.nav a:hover,
.nav a.active {
    color: var(--fire);
}

.nav a::before {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 14px;
    width: 0;
    height: 2px;
    background: var(--flame-grad);
    transform: translateX(-50%);
    transition: width 0.28s var(--ease);
}

.nav a:hover::before,
.nav a.active::before {
    width: 130%;
}

.join-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-width: 112px;
    height: 38px;
    padding: 0 20px;
    color: #fff;
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    background: var(--flame-grad);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: var(--r-sm);
    box-shadow: 0 6px 18px var(--fire-glow), inset 0 1px 0 rgba(255, 255, 255, 0.4);
    transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), filter 0.25s var(--ease);
}

.join-btn:hover {
    transform: translateY(-2px);
    filter: brightness(1.05) saturate(1.1);
    box-shadow: 0 12px 26px var(--fire-glow-2), inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

/* ===================== Floating warm motes ===================== */
.embers {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.embers i {
    position: absolute;
    bottom: -10px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: rgba(249, 115, 22, 0.5);
    box-shadow: 0 0 8px rgba(251, 191, 36, 0.5);
    opacity: 0;
    animation: rise linear infinite;
}

.embers i:nth-child(1) { left: 8%;  width: 4px; height: 4px; animation-duration: 17s; animation-delay: 0s; }
.embers i:nth-child(2) { left: 16%; width: 6px; height: 6px; animation-duration: 21s; animation-delay: 3s; background: rgba(239,68,68,0.4); }
.embers i:nth-child(3) { left: 24%; width: 3px; height: 3px; animation-duration: 14s; animation-delay: 6s; }
.embers i:nth-child(4) { left: 33%; width: 5px; height: 5px; animation-duration: 24s; animation-delay: 1.5s; }
.embers i:nth-child(5) { left: 42%; width: 4px; height: 4px; animation-duration: 18s; animation-delay: 9s; background: rgba(244,63,94,0.4); }
.embers i:nth-child(6) { left: 51%; width: 7px; height: 7px; animation-duration: 22s; animation-delay: 4s; }
.embers i:nth-child(7) { left: 60%; width: 3px; height: 3px; animation-duration: 15s; animation-delay: 7.5s; }
.embers i:nth-child(8) { left: 68%; width: 5px; height: 5px; animation-duration: 26s; animation-delay: 2.5s; background: rgba(251,191,36,0.5); }
.embers i:nth-child(9) { left: 76%; width: 4px; height: 4px; animation-duration: 19s; animation-delay: 10s; }
.embers i:nth-child(10) { left: 84%; width: 6px; height: 6px; animation-duration: 23s; animation-delay: 2s; }
.embers i:nth-child(11) { left: 92%; width: 4px; height: 4px; animation-duration: 16s; animation-delay: 6.5s; }
.embers i:nth-child(12) { left: 55%; width: 3px; height: 3px; animation-duration: 27s; animation-delay: 11s; background: rgba(244,63,94,0.35); }

@keyframes rise {
    0%   { transform: translateY(0) translateX(0) scale(1); opacity: 0; }
    12%  { opacity: 0.8; }
    50%  { transform: translateY(-50vh) translateX(28px) scale(0.85); opacity: 0.6; }
    88%  { opacity: 0.25; }
    100% { transform: translateY(-105vh) translateX(-18px) scale(0.4); opacity: 0; }
}

/* ===================== Hero ===================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 128px clamp(22px, 6vw, 96px) 88px;
    background:
        radial-gradient(40% 50% at 84% 30%, rgba(251, 191, 36, 0.22), transparent 62%),
        radial-gradient(36% 42% at 96% 6%, rgba(239, 68, 68, 0.14), transparent 60%),
        radial-gradient(34% 40% at 6% 90%, rgba(101, 163, 13, 0.10), transparent 60%),
        linear-gradient(150deg, #fbf3e7 0%, #faf6ef 50%, #f4ecdf 100%);
}

/* giant brand watermark */
.hero::after,
.page-hero::after {
    content: "YHG";
    position: absolute;
    right: 2vw;
    bottom: 2vh;
    color: rgba(234, 88, 12, 0.06);
    font-family: var(--display);
    font-size: clamp(150px, 24vw, 380px);
    font-weight: 700;
    letter-spacing: -0.06em;
    line-height: 0.7;
    pointer-events: none;
}

/* thin diagonal accent line */
.hero::before {
    content: "";
    position: absolute;
    left: 0;
    top: 32%;
    width: 38%;
    height: 2px;
    background: var(--flame-grad);
    opacity: 0.7;
}

.hero-content,
.page-hero-content {
    position: relative;
    z-index: 1;
    max-width: 760px;
}

.eyebrow {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    padding: 7px 16px 7px 12px;
    color: var(--fire);
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    background: var(--surface-2);
    border: 1px solid var(--line-hot);
    border-radius: 999px;
}

.eyebrow::before {
    content: "";
    width: 7px;
    height: 7px;
    background: var(--fire-2);
    box-shadow: 0 0 8px var(--fire-2);
    border-radius: 50%;
    animation: pulse 1.8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.7); }
}

.hero h1,
.page-hero h1 {
    color: var(--text);
    font-family: var(--display);
    font-size: clamp(46px, 7.2vw, 96px);
    font-weight: 700;
    line-height: 1.02;
    letter-spacing: -0.01em;
}

.hero h1 strong,
.page-hero h1 strong {
    font-style: normal;
    font-weight: 700;
    background: var(--flame-grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 4px 16px var(--fire-glow));
}

.hero p,
.page-hero p {
    max-width: 600px;
    margin-top: 26px;
    color: var(--dim);
    font-size: 17px;
    line-height: 1.95;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 42px;
}

.primary-btn,
.ghost-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    min-width: 168px;
    height: 52px;
    padding: 0 30px;
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    border-radius: var(--r-sm);
    transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), filter 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.primary-btn {
    color: #fff;
    background: var(--flame-grad);
    border: 1px solid rgba(255, 255, 255, 0.45);
    box-shadow: 0 10px 26px var(--fire-glow), inset 0 1px 0 rgba(255, 255, 255, 0.45);
}

.primary-btn:hover {
    transform: translateY(-3px);
    filter: brightness(1.06) saturate(1.12);
    box-shadow: 0 16px 34px var(--fire-glow-2), inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.ghost-btn {
    color: var(--spring);
    border: 1px solid var(--line-spring);
    background: var(--surface-2);
}

.ghost-btn:hover {
    transform: translateY(-3px);
    border-color: var(--spring-2);
    background: var(--spring-soft);
    box-shadow: 0 12px 26px var(--spring-glow);
}

/* button chevron */
.primary-btn::after,
.ghost-btn::after {
    content: "→";
    font-family: var(--display);
    font-size: 16px;
    font-weight: 700;
    line-height: 0;
    transition: transform 0.25s var(--ease);
}

.primary-btn:hover::after,
.ghost-btn:hover::after {
    transform: translateX(4px);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    max-width: 720px;
    margin-top: 56px;
}

.stat-card {
    position: relative;
    overflow: hidden;
    padding: 22px 24px;
    background: var(--glass);
    border: 1px solid var(--line-2);
    border-radius: var(--r);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(12px) saturate(140%);
    -webkit-backdrop-filter: blur(12px) saturate(140%);
    transition: transform 0.28s var(--ease), border-color 0.28s var(--ease), box-shadow 0.28s var(--ease);
}

.stat-card::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
}

/* alternate accent: flame / spring / flame */
.stat-card:nth-child(odd)::before {
    background: var(--flame-grad);
}
.stat-card:nth-child(even)::before {
    background: linear-gradient(180deg, var(--spring-2), var(--spring));
}

.stat-card:nth-child(even) b {
    background: linear-gradient(135deg, var(--spring-2), var(--spring-3));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--line-hot);
    box-shadow: var(--shadow);
}

.stat-card b {
    display: block;
    background: var(--flame-grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-family: var(--display);
    font-size: 21px;
    font-weight: 700;
    line-height: 1;
}

.stat-card span {
    display: block;
    margin-top: 9px;
    color: var(--dim);
    font-size: 13px;
}

/* ===================== Page hero ===================== */
.page-hero {
    position: relative;
    min-height: 54vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 118px clamp(22px, 6vw, 96px) 70px;
    background:
        radial-gradient(44% 50% at 78% 36%, rgba(251, 191, 36, 0.20), transparent 60%),
        radial-gradient(36% 42% at 94% 8%, rgba(239, 68, 68, 0.12), transparent 60%),
        radial-gradient(32% 38% at 8% 92%, rgba(101, 163, 13, 0.09), transparent 60%),
        linear-gradient(145deg, #fbf3e7, #faf6ef 60%, #f4ecdf);
}

.page-hero::before {
    content: "";
    position: absolute;
    left: 0;
    top: 32%;
    width: 32%;
    height: 2px;
    background: var(--flame-grad);
    opacity: 0.7;
}

.member-hero {
    min-height: 66vh;
}

/* ===================== Section ===================== */
.section {
    position: relative;
    overflow: hidden;
    padding: clamp(72px, 9vw, 112px) clamp(22px, 6vw, 96px);
}

/* top divider */
.section::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    width: min(82vw, 900px);
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--line-2) 25%, var(--line-hot) 50%, var(--line-2) 75%, transparent);
    transform: translateX(-50%);
}

.section-title {
    position: relative;
    z-index: 1;
    max-width: 880px;
    margin: 0 auto 52px;
    text-align: center;
}

.section-title span {
    display: inline-block;
    margin-bottom: 14px;
    padding: 5px 14px;
    color: var(--spring);
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    border: 1px solid var(--line-spring);
    border-radius: 999px;
    background: var(--spring-soft);
}

.section-title h2 {
    color: var(--text);
    font-family: var(--display);
    font-size: clamp(30px, 4vw, 50px);
    font-weight: 700;
    letter-spacing: -0.01em;
}

.section-title h2::after {
    content: "";
    display: block;
    width: 64px;
    height: 4px;
    margin: 20px auto 0;
    border-radius: 4px;
    background: var(--flame-grad);
    box-shadow: 0 2px 10px var(--fire-glow);
}

.section-title p {
    margin-top: 18px;
    color: var(--dim);
    line-height: 1.85;
}

/* HUD corner ticks framing each section title */
.section-title::before,
.section-title::after {
    content: "";
    position: absolute;
    top: 38px;
    width: 22px;
    height: 22px;
    pointer-events: none;
    opacity: 0.6;
}

.section-title::before {
    left: 50%;
    margin-left: -260px;
    border-left: 1px solid var(--line-hot);
    border-top: 1px solid var(--line-hot);
}

.section-title::after {
    right: 50%;
    margin-right: -260px;
    border-right: 1px solid var(--line-hot);
    border-top: 1px solid var(--line-hot);
}

/* section backgrounds — subtle tonal rhythm */
.about {
    background:
        radial-gradient(42% 50% at 14% 8%, rgba(251, 191, 36, 0.10), transparent 60%),
        linear-gradient(180deg, #fdfaf4, #faf6ef 55%, #fdfaf4);
}

.systems,
.list-section {
    background:
        radial-gradient(42% 50% at 88% 6%, rgba(101, 163, 13, 0.09), transparent 60%),
        linear-gradient(180deg, #faf6ef, #fdfaf4 86%);
}

.spirit {
    background:
        linear-gradient(180deg, rgba(251, 233, 200, 0.5), rgba(251, 233, 200, 0.7)),
        radial-gradient(42% 50% at 50% 14%, rgba(234, 88, 12, 0.10), transparent 60%),
        linear-gradient(135deg, #fbf3e7, #f6efe2);
}

.philosophy {
    background:
        radial-gradient(42% 50% at 8% 84%, rgba(251, 191, 36, 0.08), transparent 60%),
        linear-gradient(180deg, #fdfaf4, #faf6ef);
}

.vision {
    text-align: center;
    background:
        radial-gradient(46% 50% at 50% 0, rgba(239, 68, 68, 0.08), transparent 60%),
        linear-gradient(180deg, #faf6ef, #fdfaf4);
}

/* ===================== Big content cards ===================== */
.about-card,
.vision-card,
.content-card {
    position: relative;
    z-index: 1;
    max-width: 1040px;
    margin: 0 auto;
    overflow: hidden;
    padding: clamp(32px, 4vw, 50px);
    background: var(--glass);
    border: 1px solid var(--line-2);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
}

/* inner thin frame */
.about-card::before,
.content-card::before,
.vision-card::before {
    content: "";
    position: absolute;
    top: 14px;
    left: 14px;
    right: 14px;
    bottom: 14px;
    pointer-events: none;
    border: 1px solid var(--line);
    border-radius: calc(var(--r-lg) - 8px);
}

.about-card p,
.vision-card p,
.content-card p {
    position: relative;
    z-index: 1;
    color: var(--dim);
    font-size: 17px;
    line-height: 2;
}

/* ===================== Card grid ===================== */
.system-grid,
.card-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.system-card,
.grid-card {
    position: relative;
    min-height: 270px;
    overflow: hidden;
    padding: 32px 28px;
    background: var(--glass);
    border: 1px solid var(--line-2);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    transition: transform 0.28s var(--ease), border-color 0.28s var(--ease), box-shadow 0.28s var(--ease);
    isolation: isolate;
}

/* moving sheen on hover */
.system-card::before,
.grid-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: -75%;
    width: 50%;
    height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.55), transparent);
    transform: skewX(-22deg);
    transition: left 0.7s var(--ease);
    pointer-events: none;
    z-index: 1;
}

/* single cut-corner flame accent on hover */
.system-card::after,
.grid-card::after {
    content: "";
    position: absolute;
    right: 0;
    top: 0;
    width: 26px;
    height: 26px;
    background: var(--flame-grad);
    clip-path: polygon(100% 0, 100% 100%, 0 0);
    opacity: 0;
    transition: opacity 0.28s var(--ease);
}

.system-card:hover::before,
.grid-card:hover::before {
    left: 160%;
}

.system-card:hover,
.grid-card:hover {
    transform: translateY(-6px);
    border-color: var(--line-hot);
    box-shadow: var(--shadow);
}

.system-card:hover::after,
.grid-card:hover::after {
    opacity: 1;
}

.number,
.meta {
    position: relative;
    z-index: 1;
    color: var(--spring);
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.number {
    color: var(--fire);
}

.system-card h3,
.grid-card h3 {
    position: relative;
    z-index: 1;
    margin-top: 18px;
    color: var(--text);
    font-family: var(--display);
    font-size: 23px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.system-card p,
.grid-card p {
    position: relative;
    z-index: 1;
    margin-top: 14px;
    color: var(--dim);
    line-height: 1.85;
}

/* ===================== Spirit ===================== */
.spirit-layout {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(280px, 380px) 1fr;
    gap: 26px;
    align-items: stretch;
}

.spirit-slogan {
    position: relative;
    min-height: 440px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    overflow: hidden;
    padding: 38px;
    background: var(--flame-grad);
    border: 1px solid var(--line-hot);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow), 0 0 40px var(--fire-glow);
    color: #fff;
}

.spirit-slogan::after {
    content: "";
    position: absolute;
    inset: 16px;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: calc(var(--r-lg) - 8px);
    pointer-events: none;
}

.spirit-slogan h2,
.spirit-slogan p {
    position: relative;
    z-index: 1;
}

.spirit-slogan h2 {
    font-family: var(--display);
    font-size: clamp(24px, 2.8vw, 36px);
    line-height: 1.22;
    color: #fff;
    text-shadow: 0 2px 14px rgba(0, 0, 0, 0.18);
}

.spirit-slogan p {
    color: rgba(255, 255, 255, 0.92);
    line-height: 1.85;
}

.spirit-list {
    display: grid;
    gap: 14px;
}

.spirit-item {
    position: relative;
    overflow: hidden;
    padding: 24px 28px;
    background: var(--glass);
    border: 1px solid var(--line-2);
    border-left: 3px solid var(--fire-2);
    border-radius: var(--r);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(12px) saturate(140%);
    -webkit-backdrop-filter: blur(12px) saturate(140%);
    transition: transform 0.28s var(--ease), border-color 0.28s var(--ease), box-shadow 0.28s var(--ease);
}

.spirit-item:nth-child(even) {
    border-left-color: var(--spring-2);
}

.spirit-item:nth-child(even) h3 {
    color: var(--spring-3);
}

.spirit-item:hover {
    transform: translateX(6px);
    box-shadow: var(--shadow);
}

.spirit-item:nth-child(odd):hover {
    border-left-color: var(--fire);
    box-shadow: var(--shadow), -4px 0 18px var(--fire-glow);
}

.spirit-item:nth-child(even):hover {
    border-left-color: var(--spring);
    box-shadow: var(--shadow), -4px 0 18px var(--spring-glow);
}

.spirit-item h3 {
    color: var(--fire);
    font-family: var(--display);
    font-size: 19px;
    letter-spacing: -0.01em;
}

.spirit-item p {
    margin-top: 10px;
    color: var(--dim);
    line-height: 1.85;
}

/* ===================== Philosophy / two col ===================== */
.philosophy-grid,
.two-column {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.statement {
    position: relative;
    min-height: 310px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    overflow: hidden;
    padding: 36px;
    border: 1px solid var(--line-2);
    border-radius: var(--r-lg);
    background:
        linear-gradient(180deg, transparent 5%, var(--surface) 100%),
        radial-gradient(60% 60% at 72% 12%, var(--fire-soft), transparent 60%),
        linear-gradient(135deg, rgba(251, 191, 36, 0.16), rgba(239, 68, 68, 0.10));
    box-shadow: var(--shadow-sm);
    transition: transform 0.28s var(--ease), border-color 0.28s var(--ease), box-shadow 0.28s var(--ease);
}

.statement:nth-child(2) {
    background:
        linear-gradient(180deg, transparent 5%, var(--surface) 100%),
        radial-gradient(60% 60% at 72% 12%, var(--spring-soft), transparent 60%),
        linear-gradient(135deg, rgba(101, 163, 13, 0.14), rgba(251, 191, 36, 0.10));
}

.statement:hover {
    transform: translateY(-5px);
    border-color: var(--line-hot);
    box-shadow: var(--shadow);
}

.statement h3 {
    color: var(--text);
    font-family: var(--display);
    font-size: 27px;
    letter-spacing: -0.01em;
}

.statement p {
    margin-top: 14px;
    color: var(--dim);
    line-height: 1.9;
}

.motto {
    display: inline-block;
    margin-top: 28px;
    font-family: var(--display);
    font-size: clamp(20px, 2.8vw, 26px);
    font-weight: 700;
    letter-spacing: 0.12em;
    background: var(--flame-grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 4px 16px var(--fire-glow));
}

/* ===================== Profile grid ===================== */
.profile-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.profile-card {
    position: relative;
    min-height: 360px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    overflow: hidden;
    padding: 26px;
    border: 1px solid var(--line-2);
    border-radius: var(--r-lg);
    background:
        linear-gradient(180deg, transparent, var(--surface)),
        radial-gradient(60% 40% at 50% 18%, var(--fire-soft), transparent 60%),
        linear-gradient(155deg, rgba(251, 191, 36, 0.14), rgba(239, 68, 68, 0.08));
    box-shadow: var(--shadow-sm);
    transition: transform 0.28s var(--ease), border-color 0.28s var(--ease), box-shadow 0.28s var(--ease);
}

.profile-card:nth-child(even) {
    background:
        linear-gradient(180deg, transparent, var(--surface)),
        radial-gradient(60% 40% at 50% 18%, var(--spring-soft), transparent 60%),
        linear-gradient(155deg, rgba(101, 163, 13, 0.14), rgba(251, 191, 36, 0.08));
}

/* top gradient bar */
.profile-card::after {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 3px;
    background: var(--flame-grad);
    opacity: 0.9;
}

.profile-card:nth-child(even)::after {
    background: linear-gradient(90deg, var(--spring-2), var(--spring-3));
}

.profile-card:hover {
    transform: translateY(-6px);
    border-color: var(--line-hot);
    box-shadow: var(--shadow), 0 0 0 1px var(--line-hot);
}

.profile-card:nth-child(even):hover {
    border-color: var(--line-spring);
    box-shadow: var(--shadow), 0 0 0 1px var(--line-spring);
}

.profile-card h3,
.profile-card p,
.profile-card .meta {
    position: relative;
    z-index: 1;
}

.profile-card h3 {
    color: var(--text);
    font-family: var(--display);
    font-size: 25px;
    letter-spacing: -0.01em;
}

.profile-card p {
    margin-top: 10px;
    color: var(--dim);
    line-height: 1.75;
    font-size: 14px;
}

.profile-card:nth-child(even) .meta {
    color: var(--spring);
}

.profile-pic {
    display: block;
    width: clamp(130px, 56%, 180px);
    aspect-ratio: 5 / 6;
    height: auto;
    margin: 2px auto 20px;
    object-fit: cover;
    object-position: center top;
    border: 1px solid var(--line-2);
    border-radius: 16px;
    box-shadow: var(--shadow);
    transition: transform 0.28s var(--ease);
}

.profile-card:hover .profile-pic {
    transform: translateY(-3px);
}

/* ===================== Timeline ===================== */
.timeline {
    position: relative;
    z-index: 1;
    display: grid;
    gap: 14px;
    max-width: 980px;
    margin: 0 auto;
}

.timeline-item {
    position: relative;
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 26px;
    padding: 26px 30px;
    background: var(--glass);
    border: 1px solid var(--line-2);
    border-left: 3px solid var(--fire-2);
    border-radius: var(--r);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(12px) saturate(140%);
    -webkit-backdrop-filter: blur(12px) saturate(140%);
    transition: transform 0.28s var(--ease), border-color 0.28s var(--ease), box-shadow 0.28s var(--ease);
}

.timeline-item:nth-child(even) {
    border-left-color: var(--spring-2);
}

.timeline-item:hover {
    transform: translateX(6px);
    box-shadow: var(--shadow);
}

.timeline-item:nth-child(odd):hover {
    border-left-color: var(--fire);
    box-shadow: var(--shadow), -4px 0 20px var(--fire-glow);
}

.timeline-item:nth-child(even):hover {
    border-left-color: var(--spring);
    box-shadow: var(--shadow), -4px 0 20px var(--spring-glow);
}

.timeline-item time {
    color: var(--fire);
    font-family: var(--mono);
    font-weight: 700;
    letter-spacing: 0.05em;
}

.timeline-item:nth-child(even) time {
    color: var(--spring);
}

.timeline-item h3 {
    color: var(--text);
    font-family: var(--display);
    font-size: 22px;
    letter-spacing: -0.01em;
}

.timeline-item p {
    margin-top: 10px;
    color: var(--dim);
    line-height: 1.85;
}

/* ===================== Member detail ===================== */
.member-layout {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(260px, 360px) 1fr;
    gap: 28px;
    align-items: start;
}

.member-portrait {
    position: sticky;
    top: 88px;
    overflow: hidden;
    min-height: 520px;
    padding: 34px;
    border: 1px solid var(--line-hot);
    border-radius: var(--r-lg);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.5), var(--surface)),
        radial-gradient(60% 40% at 50% 24%, var(--fire-soft), transparent 60%),
        linear-gradient(155deg, rgba(251, 191, 36, 0.20), rgba(239, 68, 68, 0.12));
    box-shadow: var(--shadow), 0 0 40px var(--fire-glow);
}

.member-portrait::before {
    content: "";
    position: absolute;
    inset: 16px;
    border: 1px solid var(--line);
    border-radius: calc(var(--r-lg) - 8px);
    pointer-events: none;
}

.member-portrait::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 116px;
    width: 124px;
    height: 160px;
    border-radius: 48% 48% 42% 42%;
    background: linear-gradient(180deg, rgba(58, 45, 30, 0.08), rgba(58, 45, 30, 0.02));
    transform: translateX(-50%);
}

.member-portrait-pic {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 300px;
    margin-bottom: auto;
    object-fit: cover;
    object-position: center top;
    border: 1px solid var(--line-2);
    border-radius: var(--r);
    box-shadow: var(--shadow);
}

.member-portrait-content {
    position: relative;
    z-index: 1;
    height: 100%;
    min-height: 452px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.member-portrait .role {
    color: var(--fire);
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.22em;
    text-transform: uppercase;
}

.member-portrait h2 {
    margin-top: 12px;
    color: var(--text);
    font-family: var(--display);
    font-size: clamp(30px, 3vw, 40px);
    letter-spacing: -0.01em;
}

.member-portrait p {
    margin-top: 10px;
    color: var(--dim);
    line-height: 1.8;
}

.member-info {
    display: grid;
    gap: 20px;
}

.info-panel {
    position: relative;
    overflow: hidden;
    padding: 30px;
    border: 1px solid var(--line-2);
    border-radius: var(--r-lg);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
}

/* corner accent */
.info-panel::before {
    content: "";
    position: absolute;
    right: 0;
    top: 0;
    width: 22px;
    height: 22px;
    background: var(--flame-grad);
    clip-path: polygon(100% 0, 100% 100%, 0 0);
    opacity: 0.9;
}

.info-panel h3 {
    position: relative;
    z-index: 1;
    color: var(--fire);
    font-family: var(--display);
    font-size: 19px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.info-panel p {
    margin-top: 14px;
    color: var(--dim);
    line-height: 1.95;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.info-cell {
    padding: 16px 18px;
    border: 1px solid var(--line);
    border-top: 2px solid var(--fire-2);
    border-radius: var(--r-sm);
    background: var(--surface-2);
    transition: border-top-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.info-cell:nth-child(even) {
    border-top-color: var(--spring-2);
}

.info-cell:hover {
    transform: translateY(-2px);
    border-top-color: var(--fire);
}

.info-cell:nth-child(even):hover {
    border-top-color: var(--spring);
}

.info-cell span {
    display: block;
    color: var(--faint);
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.info-cell b {
    display: block;
    margin-top: 8px;
    color: var(--text);
    font-size: 17px;
    font-weight: 700;
    line-height: 1.35;
}

.attribute-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 20px;
}

.attribute {
    padding: 16px 18px;
    border: 1px solid var(--line);
    border-radius: var(--r-sm);
    background: var(--surface-2);
    transition: border-color 0.25s var(--ease);
}

.attribute:hover {
    border-color: var(--line-2);
}

.attribute span {
    display: flex;
    justify-content: space-between;
    color: var(--dim);
    font-family: var(--mono);
    font-weight: 700;
    font-size: 13px;
    letter-spacing: 0.04em;
}

.attribute span b {
    color: var(--fire);
}

.attribute i {
    display: block;
    height: 7px;
    margin-top: 12px;
    overflow: hidden;
    border-radius: 4px;
    background: rgba(58, 45, 30, 0.08);
}

.attribute i::before {
    content: "";
    display: block;
    width: var(--value, 50%);
    height: 100%;
    border-radius: 4px;
    background: var(--flame-grad);
    box-shadow: 0 0 8px var(--fire-glow);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--fire);
    font-family: var(--mono);
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: color 0.25s var(--ease), gap 0.25s var(--ease);
}

.back-link::before {
    content: "←";
    transition: transform 0.25s var(--ease);
}

.back-link:hover {
    color: var(--fire-3);
    gap: 14px;
}

/* ===================== Footer ===================== */
footer {
    padding: 40px clamp(22px, 6vw, 56px);
    color: var(--faint);
    text-align: center;
    background: #f0e7d6;
    border-top: 1px solid var(--line-2);
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.1em;
}

footer::before {
    content: "";
    display: block;
    width: 100%;
    height: 1px;
    margin-bottom: 26px;
    background: linear-gradient(90deg, transparent, var(--fire-2), var(--rose), var(--spring-2), transparent);
    opacity: 0.5;
}

/* footer tagline */
footer::after {
    content: "YHG ESPORTS // 野火不熄 · 征战峡谷";
    display: block;
    margin-top: 12px;
    color: var(--faint);
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    opacity: 0.7;
}

footer p {
    color: var(--faint);
}

/* ===================== Responsive ===================== */
@media (max-width: 1080px) {
    .site-header {
        padding: 0 24px;
    }

    .system-grid,
    .card-grid,
    .profile-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .section-title::before,
    .section-title::after {
        display: none;
    }
}

@media (max-width: 860px) {
    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: rgba(250,247,242,0.98);
        border-bottom: 1px solid var(--line);
        box-shadow: 0 14px 28px rgba(26,26,46,0.1);
        padding: 8px 0;
        visibility: hidden;
        opacity: 0;
        transform: translateY(-8px);
        pointer-events: none;
        transition: opacity 0.25s, transform 0.25s, visibility 0.25s;
    }
    .nav.menu-open {
        visibility: visible;
        opacity: 1;
        transform: none;
        pointer-events: auto;
    }
    .nav a {
        display: block;
        padding: 12px 24px;
        font-size: 14px;
        border-left: 2px solid transparent;
    }
    .nav a::before { display: none; }
    .nav a:hover, .nav a.active {
        background: rgba(194,58,48,0.06);
        border-left-color: var(--fire);
    }

    .nav-toggle {
        width: 40px;
        height: 40px;
        display: grid;
        place-content: center;
        gap: 5px;
        padding: 0;
        background: transparent;
        border: 0;
        cursor: pointer;
        color: var(--dim);
    }
    .nav-toggle span {
        display: block;
        width: 20px;
        height: 2px;
        background: currentColor;
        transition: transform 0.25s, opacity 0.25s;
    }
    .nav-toggle.menu-open span:first-child { transform: translateY(7px) rotate(45deg); }
    .nav-toggle.menu-open span:nth-child(2) { opacity: 0; }
    .nav-toggle.menu-open span:last-child { transform: translateY(-7px) rotate(-45deg); }

    .hero,
    .page-hero {
        background:
            radial-gradient(60% 50% at 80% 30%, rgba(251, 191, 36, 0.24), transparent 60%),
            radial-gradient(40% 40% at 8% 92%, rgba(101, 163, 13, 0.12), transparent 60%),
            linear-gradient(145deg, #fbf3e7, #faf6ef 66%, #f4ecdf);
    }

    .system-grid,
    .card-grid,
    .spirit-layout,
    .philosophy-grid,
    .two-column,
    .profile-grid,
    .member-layout,
    .info-grid,
    .attribute-grid {
        grid-template-columns: 1fr;
    }

    .member-portrait {
        position: relative;
        top: auto;
        min-height: 380px;
    }
}

@media (max-width: 640px) {
    .site-header {
        height: 60px;
        padding: 0 18px;
    }

    .brand span {
        display: none;
    }

    .brand img {
        width: 32px;
        height: 32px;
    }

    .join-btn {
        min-width: 92px;
        height: 34px;
        font-size: 11px;
    }

    .hero,
    .page-hero {
        min-height: 92vh;
        padding: 100px 22px 62px;
    }

    .page-hero {
        min-height: 56vh;
    }

    .hero p,
    .page-hero p,
    .vision-card p {
        font-size: 16px;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        margin-top: 38px;
    }

    .section {
        padding: 64px 22px;
    }

    .about-card,
    .content-card,
    .vision-card,
    .spirit-slogan,
    .statement {
        padding: 28px;
    }

    .spirit-slogan {
        min-height: 340px;
    }

    .timeline-item {
        grid-template-columns: 1fr;
        padding: 24px;
    }

    .info-panel,
    .info-grid,
    .attribute-grid {
        gap: 10px;
    }

    .info-panel {
        padding: 24px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }
}