/* ==========================================================================
   龙岛异兽 · 官网样式表（营销优化版）
   主题：史前丛林 / 巨兽暗黑风
   ========================================================================== */

/* ---------- 1. 变量与重置 ---------- */
:root {
    /* 背景层级 */
    --bg: #060c0a;
    --bg-2: #0a1410;
    --bg-3: #0f1f19;
    --panel: #12241c;
    /* 文字 */
    --text: #edf4f0;
    --muted: #9fb5ab;
    --muted-2: #6f847b;
    /* 品牌色 */
    --accent: #ff8a00;          /* 主行动色：琥珀橙 */
    --accent-2: #ffb52e;        /* 金 */
    --green: #35e0a1;           /* 祖母绿：在线/福利 */
    --red: #ff4d5f;             /* 危险/倒计时 */
    /* 描边 / 卡片 */
    --stroke: rgba(255, 255, 255, 0.08);
    --card: rgba(255, 255, 255, 0.035);
    /* 渐变 */
    --grad-warm: linear-gradient(135deg, #ffb52e 0%, #ff8a00 100%);
    --grad-green: linear-gradient(135deg, #35e0a1 0%, #0cb57e 100%);
    --grad-text: linear-gradient(120deg, #ffd68a 0%, #ff8a00 55%, #ff5e3a 100%);
    /* 圆角与阴影 */
    --radius-lg: 20px;
    --radius-md: 14px;
    --shadow-glow: 0 20px 60px -12px rgba(255, 138, 0, 0.35);
    --shadow-card: 0 24px 48px -20px rgba(0, 0, 0, 0.6);
    /* 尺寸 */
    --container: 1200px;
    --font-sans: 'Montserrat', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
    --font-display: 'Playfair Display', 'Montserrat', 'PingFang SC', 'Microsoft YaHei', serif;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img, video { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

::selection { background: rgba(255, 138, 0, 0.35); color: #fff; }

/* 自定义滚动条 */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
    background: linear-gradient(var(--accent-2), var(--accent));
    border-radius: 999px;
    border: 2px solid var(--bg);
}

.container {
    max-width: var(--container);
    width: 100%;
    margin: 0 auto;
    padding: 0 20px;
}

/* ---------- 2. 通用工具 ---------- */
.text-center { text-align: center; }
.hidden { display: none; }

/* 区块标题组 */
.section {
    position: relative;
    padding: 104px 0;
}

.section-head {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 64px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border: 1px solid rgba(255, 138, 0, 0.35);
    border-radius: 999px;
    color: var(--accent-2);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    background: rgba(255, 138, 0, 0.08);
    margin-bottom: 20px;
}
.eyebrow .en {
    font-family: var(--font-display);
    font-style: italic;
    letter-spacing: 2px;
    opacity: 0.9;
}

.section-title {
    font-size: clamp(30px, 5vw, 52px);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: 1px;
    margin-bottom: 18px;
}
.section-title .grad-text {
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.section-desc {
    font-size: 18px;
    color: var(--muted);
    line-height: 1.8;
}

.grad-text {
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 15px 34px;
    border-radius: 999px;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.5px;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
    white-space: nowrap;
}

.btn-primary {
    position: relative;
    color: #1a0d00;
    background: var(--grad-warm);
    overflow: hidden;
    box-shadow: 0 10px 30px -8px rgba(255, 138, 0, 0.55);
}
.btn-primary::after {
    content: "";
    position: absolute;
    top: 0;
    left: -120%;
    width: 60%;
    height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.55), transparent);
    transform: skewX(-20deg);
    animation: shine 3.2s ease infinite;
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 40px -8px rgba(255, 138, 0, 0.7);
}

.btn-outline {
    border: 2px solid rgba(255, 255, 255, 0.35);
    color: #fff;
    backdrop-filter: blur(6px);
}
.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent-2);
    transform: translateY(-3px);
}

.btn-ghost {
    border: 1px solid rgba(255, 138, 0, 0.4);
    color: var(--accent-2);
}
.btn-ghost:hover { background: rgba(255, 138, 0, 0.12); }

.btn-sm { padding: 11px 22px; font-size: 14px; }

/* 光斑 / 装饰背景 */
.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.5;
    pointer-events: none;
    z-index: 0;
}

/* ---------- 3. 动画 ---------- */
@keyframes shine {
    0% { left: -120%; }
    60% { left: 150%; }
    100% { left: 150%; }
}
@keyframes floaty {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-18px); }
}
@keyframes pulse-ring {
    0% { box-shadow: 0 0 0 0 rgba(255, 138, 0, 0.6); }
    70% { box-shadow: 0 0 0 16px rgba(255, 138, 0, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 138, 0, 0); }
}
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(28px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes firefly {
    0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.15; }
    50% { transform: translate(14px, -22px) scale(1.4); opacity: 0.7; }
}
@keyframes glowPulse {
    0%, 100% { opacity: 0.55; }
    50% { opacity: 1; }
}

/* 滚动显现 */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.9s cubic-bezier(0.22, 0.61, 0.36, 1), transform 0.9s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.reveal.visible {
    opacity: 1;
    transform: none;
}

/* ---------- 4. 导航栏 ---------- */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 60;
    padding: 18px 0;
    transition: all 0.35s ease;
}
#navbar.scrolled {
    padding: 10px 0;
    background: rgba(6, 12, 10, 0.82);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 10px 30px -12px rgba(0, 0, 0, 0.7);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.nav-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
}
.nav-logo img { height: 46px; width: auto; }
.nav-list {
    display: flex;
    align-items: center;
    gap: 30px;
}
.nav-list > a,
.nav-list .tooltip {
    font-size: 15px;
    font-weight: 600;
    color: rgba(237, 244, 240, 0.82);
    position: relative;
    transition: color 0.25s ease;
}
.nav-list > a::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -8px;
    width: 0;
    height: 2px;
    background: var(--grad-warm);
    border-radius: 2px;
    transform: translateX(-50%);
    transition: width 0.3s ease;
}
.nav-list > a:hover { color: #fff; }
.nav-list > a:hover::after { width: 70%; }
.nav-cta {
    padding: 10px 22px;
    font-size: 14px;
}

#menu-toggle {
    display: none;
    font-size: 22px;
    color: #fff;
}

/* 客服 tooltip */
.tooltip { position: relative; cursor: pointer; }
.tooltip-text {
    position: absolute;
    top: calc(100% + 14px);
    left: 50%;
    transform: translateX(-50%) translateY(6px);
    min-width: 220px;
    padding: 18px;
    background: rgba(12, 20, 16, 0.97);
    border: 1px solid var(--stroke);
    border-radius: 16px;
    text-align: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 100;
    box-shadow: var(--shadow-card);
}
.tooltip:hover .tooltip-text {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}
.tooltip-text img { width: 150px; height: 150px; object-fit: cover; border-radius: 10px; margin: 0 auto 10px; }
.tooltip-text p { font-size: 13px; color: var(--text); margin: 2px 0; }
.tooltip-text p:last-child { font-size: 12px; color: var(--muted-2); }

/* 移动端菜单 */
#mobile-menu {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: rgba(6, 12, 10, 0.97);
    backdrop-filter: blur(16px);
    padding: 16px 20px 28px;
    transform: translateY(-130%);
    opacity: 0;
    transition: transform 0.35s ease, opacity 0.35s ease;
    z-index: 59;
    border-bottom: 1px solid rgba(255, 138, 0, 0.2);
    pointer-events: none;
}
#mobile-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}
#mobile-menu a,
#mobile-menu .mobile-support {
    display: block;
    padding: 14px 4px;
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
#mobile-menu .mobile-support { color: var(--accent-2); }
#mobile-menu .btn {
    width: 100%;
    margin-top: 18px;
    padding: 15px;
}

/* 客服弹窗（移动端） */
#support-modal {
    position: fixed;
    inset: 0;
    background: rgba(4, 8, 6, 0.82);
    backdrop-filter: blur(6px);
    z-index: 120;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
#support-modal .modal-content {
    width: 92%;
    max-width: 340px;
    background: var(--bg-2);
    border: 1px solid var(--stroke);
    border-radius: 20px;
    padding: 26px;
    text-align: center;
    transform: scale(0.95);
    transition: transform 0.3s ease;
}
#support-modal .modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}
#support-modal .modal-header h3 { font-size: 20px; font-weight: 800; }
#support-modal #close-modal { font-size: 20px; color: var(--muted); }
#support-modal .modal-body img {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 14px;
    margin: 0 auto 14px;
    border: 1px solid var(--stroke);
}
#support-modal .modal-body p { font-size: 15px; }
#support-modal .modal-body p:last-child { color: var(--muted-2); font-size: 13px; }

/* ---------- 5. 首屏 Hero ---------- */
#home {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 130px 0 90px;
}
.bg-video {
    position: absolute;
    inset: 0;
    z-index: 0;
}
.bg-video video,
.bg-video img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.bg-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background:
        radial-gradient(ellipse at 50% 20%, rgba(255, 138, 0, 0.16), transparent 55%),
        linear-gradient(to bottom, rgba(6, 12, 10, 0.72) 0%, rgba(6, 12, 10, 0.45) 45%, var(--bg) 100%);
}
.bg-overlay::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, transparent 40%, rgba(0, 0, 0, 0.55) 100%);
}

/* 萤火虫粒子 */
.fireflies { position: absolute; inset: 0; z-index: 1; overflow: hidden; pointer-events: none; }
.firefly {
    position: absolute;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 12px 3px rgba(53, 224, 161, 0.6);
    animation: firefly 6s ease-in-out infinite;
}

.home-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 1080px;
    width: 100%;
    padding: 0 20px;
    animation: fadeUp 1s ease both;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    color: #ffe9d0;
    background: rgba(255, 138, 0, 0.14);
    border: 1px solid rgba(255, 138, 0, 0.35);
    backdrop-filter: blur(8px);
    margin-bottom: 26px;
}
.hero-badge .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 10px var(--green);
    animation: glowPulse 1.8s ease infinite;
}

#home h1 {
    font-size: clamp(42px, 8vw, 92px);
    font-weight: 900;
    line-height: 1.08;
    letter-spacing: 2px;
    margin-bottom: 24px;
    text-shadow: 0 8px 40px rgba(0, 0, 0, 0.6);
    color: #fff;
}
#home h1 .grad-text {
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}
#home .hero-sub {
    font-size: clamp(16px, 2.4vw, 22px);
    color: rgba(237, 244, 240, 0.85);
    max-width: 760px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 18px;
    margin-bottom: 20px;
}
.hero-actions .btn-primary { animation: pulse-ring 2.4s ease infinite; }

/* 平台信息 */
.hero-platform {
    font-size: 14px;
    color: rgba(237, 244, 240, 0.62);
    letter-spacing: 1px;
}
.hero-platform i { margin-right: 6px; color: var(--accent-2); }

.scroll-down {
    position: absolute;
    bottom: 26px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    color: rgba(255, 255, 255, 0.65);
    font-size: 22px;
    animation: floaty 2.4s ease-in-out infinite;
    transition: color 0.3s ease;
}
.scroll-down:hover { color: var(--accent-2); }

/* ---------- 6. 数据一览 ---------- */
#stats {
    position: relative;
    padding: 72px 0;
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
    border-bottom: 1px solid var(--stroke);
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
}
.stat-item {
    position: relative;
    text-align: center;
    padding: 34px 16px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--stroke);
    transition: transform 0.35s ease, border-color 0.35s ease;
}
.stat-item:hover { transform: translateY(-6px); border-color: rgba(255, 138, 0, 0.4); }
.stat-item .num {
    font-family: var(--font-display);
    font-size: clamp(34px, 4.5vw, 52px);
    font-weight: 800;
    line-height: 1;
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}
.stat-item .num sup { font-size: 0.5em; }
.stat-item .num .unit { font-size: 0.55em; font-weight: 700; }
.stat-item .label {
    margin-top: 12px;
    font-size: 14px;
    color: var(--muted);
    letter-spacing: 1px;
}

/* ---------- 7. 游戏介绍 ---------- */
#intro { background: var(--bg); }
#intro .intro-lead {
    max-width: 860px;
    margin: 0 auto 48px;
    text-align: center;
}
#intro .intro-lead p {
    font-size: 18px;
    color: var(--muted);
    line-height: 1.9;
    margin-bottom: 18px;
}
#intro .intro-lead p:last-child { margin-bottom: 0; }
#intro .intro-lead strong { color: var(--text); font-weight: 700; }

.pillars {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
    margin-bottom: 44px;
}
.pillar {
    position: relative;
    padding: 34px 26px;
    border-radius: var(--radius-lg);
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.015));
    border: 1px solid var(--stroke);
    text-align: center;
    transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
    overflow: hidden;
}
.pillar::before {
    content: "";
    position: absolute;
    top: -60%;
    left: -60%;
    width: 140%;
    height: 140%;
    background: radial-gradient(circle, rgba(255, 138, 0, 0.14), transparent 60%);
    opacity: 0;
    transition: opacity 0.4s ease;
}
.pillar:hover { transform: translateY(-8px); border-color: rgba(255, 138, 0, 0.4); box-shadow: var(--shadow-card); }
.pillar:hover::before { opacity: 1; }
.pillar .icon {
    width: 66px;
    height: 66px;
    margin: 0 auto 18px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    color: #fff;
    background: var(--grad-warm);
    box-shadow: 0 10px 24px -8px rgba(255, 138, 0, 0.6);
}
.pillar h3 { font-size: 22px; font-weight: 800; margin-bottom: 10px; }
.pillar p { font-size: 15px; color: var(--muted); line-height: 1.7; }

.controls-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    max-width: 900px;
    margin: 0 auto;
}
.control-chip {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 11px 18px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--stroke);
    font-size: 14px;
    color: var(--muted);
}
.control-chip i { color: var(--accent-2); font-size: 15px; }
.control-chip b { color: var(--text); font-weight: 700; }

/* ---------- 8. 游戏特色 ---------- */
#features { background: var(--bg-2); }
#features .features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.feature-card {
    position: relative;
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.015));
    border: 1px solid var(--stroke);
    transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
    overflow: hidden;
}
.feature-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 0%, rgba(255, 138, 0, 0.12), transparent 55%);
    opacity: 0;
    transition: opacity 0.4s ease;
}
.feature-card:hover {
    transform: translateY(-10px);
    border-color: rgba(255, 138, 0, 0.45);
    box-shadow: var(--shadow-card);
}
.feature-card:hover::after { opacity: 1; }
.feature-card .icon {
    position: relative;
    z-index: 1;
    width: 62px;
    height: 62px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 22px;
    color: var(--accent-2);
    background: rgba(255, 138, 0, 0.14);
    border: 1px solid rgba(255, 138, 0, 0.25);
}
.feature-card:nth-child(2n) .icon { color: var(--green); background: rgba(53, 224, 161, 0.12); border-color: rgba(53, 224, 161, 0.25); }
.feature-card h3 { font-size: 21px; font-weight: 800; margin-bottom: 12px; }
.feature-card p { font-size: 15px; color: var(--muted); line-height: 1.7; }

/* ---------- 9. 恐龙种类 ---------- */
#dinosaurs { background: var(--bg); }
#dinosaurs .dino-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}
.dino-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-3);
    border: 1px solid var(--stroke);
    transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease;
}
.dino-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-card); border-color: rgba(255, 138, 0, 0.4); }
.dino-img { position: relative; height: 230px; overflow: hidden; }
.dino-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.dino-card:hover .dino-img img { transform: scale(1.12); }
.dino-img::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, var(--bg-3) 0%, transparent 42%);
}
.dino-type {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    padding: 5px 13px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 1px;
    color: #fff;
}
.dino-type.carnivore { background: linear-gradient(135deg, #ff6a5e, #e53935); box-shadow: 0 6px 16px -4px rgba(229, 57, 53, 0.6); }
.dino-type.herbivore { background: linear-gradient(135deg, #35e0a1, #0cb57e); box-shadow: 0 6px 16px -4px rgba(12, 181, 126, 0.6); }
.dino-info { padding: 20px 22px 26px; }
.dino-info h3 { font-size: 22px; font-weight: 800; margin-bottom: 10px; }
.dino-info p { font-size: 14.5px; color: var(--muted); line-height: 1.7; }
.more-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-top: 52px;
    padding: 14px 34px;
    border-radius: 999px;
    border: 2px solid rgba(255, 138, 0, 0.5);
    color: var(--accent-2);
    font-weight: 700;
    transition: all 0.3s ease;
}
.more-btn:hover { background: var(--grad-warm); color: #1a0d00; border-color: transparent; box-shadow: var(--shadow-glow); }

/* ---------- 10. 游戏截图 ---------- */
#screenshots {
    background: var(--bg-2);
}
#screenshots .screenshot-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}
.screenshot-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: zoom-in;
    border: 1px solid var(--stroke);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}
.screenshot-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-card); }
.screenshot-item img {
    width: 100%;
    height: 230px;
    object-fit: cover;
    transition: transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.screenshot-item:hover img { transform: scale(1.1); }
.screenshot-item .cap {
    position: absolute;
    inset: auto 0 0 0;
    padding: 40px 16px 14px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.85), transparent);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    opacity: 0;
    transform: translateY(8px);
    transition: all 0.35s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}
.screenshot-item:hover .cap { opacity: 1; transform: translateY(0); }
.screenshot-item .cap i { color: var(--accent-2); }

/* ---------- 11. 区服推荐 ---------- */
#servers { background: var(--bg); }
.server-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    max-width: 900px;
    margin: 0 auto;
}
.server-tag,
.server-tag-popular {
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 22px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--stroke);
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}
.server-tag:hover,
.server-tag-popular:hover {
    border-color: rgba(255, 138, 0, 0.5);
    background: rgba(255, 138, 0, 0.08);
    transform: translateY(-3px);
}
.server-tag-popular { border-color: rgba(255, 138, 0, 0.5); background: rgba(255, 138, 0, 0.08); }
.server-tag-popular::after {
    content: "火爆";
    position: absolute;
    top: -11px;
    right: 14px;
    padding: 3px 10px;
    border-radius: 999px;
    background: var(--grad-warm);
    color: #1a0d00;
    font-size: 11px;
    font-weight: 800;
}
.server-tag-popular.new::after { content: "新服"; background: var(--grad-green); color: #04140d; }
.server-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--green); box-shadow: 0 0 10px var(--green); flex-shrink: 0; }
.server-tag .server-name { flex: 1; text-align: left; }
.server-tag .server-name .s { font-size: 15px; font-weight: 700; }
.server-tag .server-name .t { font-size: 12px; color: var(--muted-2); }
.server-hint { text-align: center; margin-top: 24px; font-size: 14px; color: var(--muted); }
.server-hint i { color: var(--green); margin-right: 6px; }

/* ---------- 12. 配置需求 ---------- */
#requirements { background: var(--bg-2); }
#requirements .req-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 26px;
    max-width: 960px;
    margin: 0 auto;
}
.req-card {
    position: relative;
    padding: 36px 32px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--stroke);
}
.req-card.recommend {
    border: 1px solid rgba(255, 138, 0, 0.4);
    background: linear-gradient(160deg, rgba(255, 138, 0, 0.1), rgba(255, 255, 255, 0.02));
}
.req-card.recommend::before {
    content: "推荐";
    position: absolute;
    top: -13px;
    right: 26px;
    padding: 4px 14px;
    border-radius: 999px;
    background: var(--grad-warm);
    color: #1a0d00;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 1px;
}
.req-card h3 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 26px;
}
.req-card h3 .icon {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}
.req-card.basic h3 .icon { color: var(--muted); background: rgba(255, 255, 255, 0.06); }
.req-card.recommend h3 .icon { color: var(--accent-2); background: rgba(255, 138, 0, 0.16); }
.req-card ul { display: flex; flex-direction: column; gap: 14px; }
.req-card ul li {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 0;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
    font-size: 14.5px;
}
.req-card ul li:last-child { border-bottom: none; }
.req-card ul li .k { color: var(--muted); flex-shrink: 0; }
.req-card ul li .v { text-align: right; font-weight: 600; color: var(--text); }

/* ---------- 13. 限时福利 ---------- */
#福利 {
    position: relative;
    overflow: hidden;
    background: var(--bg);
}
#福利 .福利-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    background-image: url(../_external/picsum.photos/id/1060/1920/1080.jpg);
    background-size: cover;
    background-position: center;
    opacity: 0.12;
}
#福利 .福利-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(to bottom, var(--bg) 0%, rgba(6, 12, 10, 0.82) 30%, rgba(6, 12, 10, 0.9) 70%, var(--bg) 100%);
}
.福利-content {
    position: relative;
    z-index: 2;
    max-width: 820px;
    margin: 0 auto;
    text-align: center;
}
.福利-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 18px;
    border-radius: 999px;
    background: var(--grad-warm);
    color: #1a0d00;
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 1px;
    margin-bottom: 26px;
    box-shadow: 0 10px 30px -8px rgba(255, 138, 0, 0.6);
}
#福利 h2 { font-size: clamp(30px, 5vw, 50px); font-weight: 900; margin-bottom: 16px; }
#福利 .福利-sub { font-size: 18px; color: var(--muted); max-width: 620px; margin: 0 auto 34px; line-height: 1.8; }

/* 倒计时 */
.countdown { display: flex; justify-content: center; gap: 14px; margin-bottom: 40px; }
.countdown .cd-item {
    min-width: 78px;
    padding: 14px 10px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 77, 95, 0.35);
}
.countdown .cd-item .cd-num {
    font-family: var(--font-display);
    font-size: 34px;
    font-weight: 800;
    color: var(--red);
    line-height: 1;
    text-shadow: 0 0 18px rgba(255, 77, 95, 0.5);
}
.countdown .cd-item .cd-label { font-size: 12px; color: var(--muted); margin-top: 6px; }

/* 邀请码 */
.code-box {
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 460px;
    margin: 0 auto 16px;
    padding: 12px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 2px dashed rgba(255, 138, 0, 0.5);
}
.code-box #gift-code {
    flex: 1;
    font-family: var(--font-display);
    font-size: 30px;
    font-weight: 800;
    letter-spacing: 5px;
    color: var(--accent-2);
    text-align: center;
    padding: 8px;
}
.code-box #copy-btn {
    flex-shrink: 0;
    width: 54px;
    height: 54px;
    border-radius: 12px;
    background: var(--grad-warm);
    color: #1a0d00;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.25s ease;
}
.code-box #copy-btn:hover { transform: scale(1.06); }
#copy-message {
    display: none;
    font-size: 14px;
    color: var(--green);
    margin-bottom: 34px;
}
#copy-message i { margin-right: 5px; }

/* 福利内容 */
.gift-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}
.gift-item {
    padding: 30px 22px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--stroke);
    transition: transform 0.35s ease, border-color 0.35s ease;
}
.gift-item:hover { transform: translateY(-8px); border-color: rgba(255, 138, 0, 0.4); }
.gift-item .icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--accent-2);
    background: rgba(255, 138, 0, 0.14);
    border: 1px solid rgba(255, 138, 0, 0.25);
}
.gift-item h3 { font-size: 18px; font-weight: 800; margin-bottom: 8px; }
.gift-item p { font-size: 13.5px; color: var(--muted); line-height: 1.6; }

/* ---------- 14. 下载步骤 ---------- */
#download { background: var(--bg-2); }
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
    max-width: 1000px;
    margin: 0 auto 52px;
}
.step-card {
    position: relative;
    padding: 38px 28px 32px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.035);
    border: 1px solid var(--stroke);
    text-align: center;
    transition: transform 0.35s ease, border-color 0.35s ease;
}
.step-card:hover { transform: translateY(-8px); border-color: rgba(53, 224, 161, 0.4); }
.step-card .step-no {
    position: absolute;
    top: -18px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--grad-green);
    color: #04140d;
    font-weight: 800;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 20px -6px rgba(53, 224, 161, 0.6);
}
.step-card .icon { font-size: 30px; color: var(--green); margin: 6px 0 16px; }
.step-card h3 { font-size: 20px; font-weight: 800; margin-bottom: 10px; }
.step-card p { font-size: 14.5px; color: var(--muted); line-height: 1.7; }

.download-cta {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    padding: 40px 30px;
    border-radius: 24px;
    background: linear-gradient(160deg, rgba(53, 224, 161, 0.1), rgba(255, 138, 0, 0.08));
    border: 1px solid rgba(53, 224, 161, 0.25);
}
.download-cta .qrcode {
    width: 180px;
    height: 180px;
    margin: 0 auto 22px;
    background: #fff;
    border-radius: 16px;
    padding: 10px;
    box-shadow: 0 16px 40px -10px rgba(0, 0, 0, 0.6);
}
.download-cta .qrcode img { width: 100%; height: 100%; object-fit: cover; border-radius: 10px; }
.download-cta h3 { font-size: 26px; font-weight: 800; margin-bottom: 12px; }
.download-cta p { color: var(--muted); font-size: 15px; margin-bottom: 24px; }

/* ---------- 15. 关注公众号 ---------- */
.follow-section { background: var(--bg); padding: 90px 0; }
.follow-section .content { max-width: 640px; margin: 0 auto; text-align: center; }
.follow-section h2 { font-size: clamp(26px, 4vw, 40px); font-weight: 800; margin-bottom: 14px; }
.follow-section p { color: var(--muted); margin-bottom: 32px; }
.follow-section .qrcode {
    width: 220px;
    height: 220px;
    margin: 0 auto;
    background: #fff;
    border-radius: 16px;
    padding: 12px;
    box-shadow: 0 16px 40px -12px rgba(0, 0, 0, 0.6);
}
.follow-section .qrcode img { width: 100%; height: 100%; object-fit: cover; border-radius: 10px; }
.follow-section .desc { font-size: 13px; color: var(--muted-2); margin-top: 22px; margin-bottom: 0; }

/* ---------- 16. 页脚 ---------- */
footer {
    background: var(--bg-2);
    border-top: 1px solid var(--stroke);
    padding: 72px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 56px;
}
.footer-col .logo img { height: 48px; margin-bottom: 18px; }
.footer-col > p { color: var(--muted); line-height: 1.7; margin-bottom: 22px; font-size: 14.5px; }
.social-links { display: flex; gap: 12px; }
.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--stroke);
    color: var(--muted);
    transition: all 0.3s ease;
}
.social-links a:hover {
    background: var(--grad-warm);
    color: #1a0d00;
    border-color: transparent;
    transform: translateY(-3px);
}
.footer-col h3 {
    position: relative;
    font-size: 17px;
    font-weight: 800;
    margin-bottom: 22px;
    padding-bottom: 12px;
}
.footer-col h3::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 34px;
    height: 3px;
    border-radius: 3px;
    background: var(--grad-warm);
}
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col ul a { color: var(--muted); font-size: 14.5px; transition: color 0.25s ease, padding-left 0.25s ease; }
.footer-col ul a:hover { color: var(--accent-2); padding-left: 4px; }

.copyright {
    border-top: 1px solid var(--stroke);
    padding: 30px 0;
    text-align: center;
}
.health-notice {
    display: inline-block;
    padding: 10px 18px;
    border-radius: 10px;
    background: rgba(255, 77, 95, 0.08);
    border: 1px solid rgba(255, 77, 95, 0.25);
    color: #ffb3ba;
    font-size: 13px;
    margin-bottom: 18px;
    line-height: 1.7;
}
.copyright p { color: var(--muted-2); font-size: 13px; margin-bottom: 8px; line-height: 1.7; }
.copyright p:last-child { margin-bottom: 0; }
.copyright a { color: var(--muted-2); }
.copyright a:hover { color: var(--accent-2); }

/* ---------- 17. 弹窗 ---------- */
#downloadModal {
    position: fixed;
    inset: 0;
    background: rgba(8, 18, 14, 0.6);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 130;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    padding: 20px;
}
#downloadModal.show { opacity: 1; pointer-events: auto; }
.qr-modal {
    position: relative;
    width: 100%;
    max-width: 400px;
    max-height: 92vh;
    overflow-y: auto;
    background: #ffffff;
    color: #17352b;
    border-radius: 24px;
    padding: 30px 26px 22px;
    box-shadow: 0 32px 80px -18px rgba(0, 0, 0, 0.45);
    transform: scale(0.95) translateY(10px);
    transition: transform 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
    text-align: center;
}
#downloadModal.show .qr-modal { transform: scale(1) translateY(0); }
.qr-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.06);
    color: #7a8f87;
    font-size: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.25s ease, color 0.25s ease;
    z-index: 2;
}
.qr-close:hover { background: #ff4d5f; color: #fff; }

.qr-top { margin-bottom: 22px; }
.qr-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 15px;
    border-radius: 999px;
    background: linear-gradient(135deg, #ffb52e, #ff7a00);
    color: #fff;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 1px;
    margin-bottom: 14px;
    box-shadow: 0 6px 18px -6px rgba(255, 122, 0, 0.55);
}
.qr-top h3 { font-size: 26px; font-weight: 900; color: #14332a; letter-spacing: 1px; margin-bottom: 8px; }
.qr-top p { font-size: 14px; color: #6b8078; }

.qr-stage { margin-bottom: 22px; }
.qr-box {
    width: 210px;
    height: 210px;
    margin: 0 auto;
    background: #fff;
    border: 1px solid #e4ece7;
    border-radius: 18px;
    padding: 11px;
    box-shadow: 0 14px 34px -14px rgba(20, 51, 42, 0.22);
}
.qr-box img { width: 100%; height: 100%; object-fit: cover; border-radius: 12px; }
.qr-hint {
    margin-top: 12px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 700;
    color: #07c160;
}
.qr-hint i { font-size: 16px; }

.qr-perks {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 20px;
    text-align: left;
}
.qr-perk {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 11px 12px;
    background: #f4f9f6;
    border: 1px solid #e6efe9;
    border-radius: 12px;
    font-size: 13px;
    font-weight: 600;
    color: #2c4a3f;
}
.qr-perk i { color: #07c160; font-size: 15px; flex-shrink: 0; }

.qr-bottom { border-top: 1px dashed #dfe8e2; padding-top: 16px; }
.qr-invite { display: flex; align-items: center; gap: 9px; }
.qr-invite > span { font-size: 13px; color: #6b8078; flex-shrink: 0; }
.qr-invite b {
    flex: 1;
    text-align: center;
    font-family: var(--font-display);
    font-size: 21px;
    font-weight: 800;
    letter-spacing: 3px;
    color: #ff7a00;
    padding: 8px 4px;
    border: 1px dashed #ffb52e;
    border-radius: 10px;
    background: #fff7ec;
}
.qr-invite button {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    height: 40px;
    padding: 0 15px;
    border-radius: 10px;
    background: linear-gradient(135deg, #ffb52e, #ff7a00);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    transition: transform 0.25s ease;
}
.qr-invite button:hover { transform: scale(1.04); }
@media (max-width: 400px) {
    .qr-perks { grid-template-columns: 1fr; }
    .qr-box { width: 176px; height: 176px; }
    .qr-top h3 { font-size: 22px; }
}

/* 截图灯箱 */
#lightbox {
    position: fixed;
    inset: 0;
    background: rgba(4, 8, 6, 0.94);
    backdrop-filter: blur(10px);
    z-index: 140;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    padding: 24px;
}
#lightbox.show { opacity: 1; pointer-events: auto; }
#lightbox img {
    max-width: 100%;
    max-height: 88vh;
    border-radius: 14px;
    box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.8);
}
#lightbox .lb-close {
    position: absolute;
    top: 22px;
    right: 26px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.25s ease;
}
#lightbox .lb-close:hover { background: var(--red); }

/* ---------- 18. 浮动元素 ---------- */
#backTop {
    position: fixed;
    right: 26px;
    bottom: 26px;
    width: 50px;
    height: 50px;
    border-radius: 14px;
    background: var(--grad-warm);
    color: #1a0d00;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px);
    transition: all 0.3s ease;
    z-index: 80;
    box-shadow: 0 12px 30px -8px rgba(255, 138, 0, 0.6);
}
#backTop.show { opacity: 1; visibility: visible; transform: translateY(0); }

/* 移动端底部固定下载条 */
#mobileCta {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 90;
    display: none;
    padding: 12px 16px;
    background: rgba(6, 12, 10, 0.92);
    backdrop-filter: blur(16px);
    border-top: 1px solid rgba(255, 138, 0, 0.3);
}
#mobileCta .btn { flex: 1; }

/* ---------- 19. 响应式 ---------- */
@media (max-width: 1023px) {
    #features .features-grid,
    #dinosaurs .dino-grid,
    #screenshots .screenshot-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 767px) {
    .section { padding: 72px 0; }
    .section-head { margin-bottom: 44px; }

    #navbar .nav-list { display: none; }
    #navbar .nav-cta { display: none; }
    #menu-toggle { display: block; }

    #home { padding: 120px 0 70px; }
    #home h1 { font-size: clamp(34px, 11vw, 52px); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }

    .pillars,
    #features .features-grid,
    #dinosaurs .dino-grid,
    #screenshots .screenshot-grid,
    .server-grid,
    #requirements .req-grid,
    .gift-grid,
    .steps-grid { grid-template-columns: 1fr; }

    .countdown { gap: 10px; }
    .countdown .cd-item { min-width: 66px; padding: 12px 8px; }
    .countdown .cd-item .cd-num { font-size: 26px; }

    .footer-grid { grid-template-columns: 1fr; gap: 32px; }

    #mobileCta { display: flex; gap: 10px; }
    #backTop { bottom: 84px; right: 16px; }
    body { padding-bottom: 74px; }
}

@media (max-width: 400px) {
    #home h1 { font-size: 32px; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions .btn { width: 100%; }
    .code-box #gift-code { font-size: 24px; letter-spacing: 3px; }
}