/* 基础变量体系 (继承自首页) */
:root {
    --color-brand: #70e2c9;
    --color-brand-dark: #4ebf9a;
    --color-brand-light: rgba(112, 226, 201, 0.15);
    --color-bg-main: #f4f8f7;
    --color-surface: #ffffff;
    --color-text-main: #23352f;
    --color-text-sub: #566b64;
    --color-border: #e2ede9;
    --radius-base: 16px;
    --radius-large: 24px;
    --radius-pill: 50px;
    --shadow-soft: 0 12px 36px rgba(35, 53, 47, 0.06);
    --shadow-hover: 0 20px 48px rgba(35, 53, 47, 0.12);
    --transition: all 0.25s ease;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --width-fold: 1200px;
}

/* 全局重置 */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg-main);
    color: var(--color-text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

/* 文本换行安全规则 */
.yarn, .howl {
    word-break: break-word;
    overflow-wrap: break-word;
    white-space: normal;
}
.yarn {
    word-break: keep-all; /* 中文保持词组完整 */
}

/* Flexbox 安全规则 */
.clan, .pack, .globe, .blaze-fold {
    display: flex;
    flex-wrap: wrap;
}
.clan > *, .pack > *, .globe > *, .blaze-fold > * {
    min-width: 0;
}

/* 版心容器 */
.fold {
    max-width: var(--width-fold);
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
}

/* --- 强制复用的导航栏样式 (按要求完全一致) --- */
.crown-fold {
    background: var(--color-surface);
    box-shadow: 0 4px 20px rgba(35, 53, 47, 0.04);
    position: sticky;
    top: 0;
    z-index: 100;
}
.crown-clan {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    max-width: 1440px;
    margin: 0 auto;
}
.crest img {
    height: 36px;
    display: block;
}
.pack {
    display: flex;
    gap: 32px;
}
.scent {
    color: var(--color-text-sub);
    font-weight: 500;
    font-size: 1rem;
    position: relative;
}
.scent:hover {
    color: var(--color-brand-dark);
}
.scent-active, .scent.active {
    color: var(--color-brand-dark);
}
.scent-active::after, .scent.active::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--color-brand);
    border-radius: 4px;
}

/* --- 页面骨架与组件样式 --- */

/* Hero 区块 (Offset Overlap 创意变体) */
.blaze {
    padding: 100px 0 120px 0;
    position: relative;
    overflow: hidden;
}
.blaze::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-brand-light) 0%, rgba(244,248,247,0) 70%);
    border-radius: 50%;
    z-index: -1;
}
.blaze-fold {
    align-items: center;
    justify-content: space-between;
    gap: 64px;
}
.blaze-yarn {
    flex: 1;
    min-width: 320px;
    max-width: 600px;
}
.howl-prime {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--color-text-main);
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -1px;
}
.howl-prime span {
    background: linear-gradient(135deg, var(--color-brand-dark) 0%, #2f9d7e 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.yarn-lead {
    font-size: 1.25rem;
    color: var(--color-text-sub);
    line-height: 1.6;
    margin-bottom: 40px;
}
.claw {
    display: inline-block;
    padding: 16px 40px;
    background: linear-gradient(135deg, var(--color-brand) 0%, var(--color-brand-dark) 100%);
    color: #0b211a;
    font-weight: 600;
    font-size: 1.1rem;
    border-radius: var(--radius-pill);
    box-shadow: 0 8px 24px rgba(112, 226, 201, 0.3);
    border: none;
    cursor: pointer;
}
.claw:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(112, 226, 201, 0.4);
}
.blaze-gaze {
    flex: 1;
    min-width: 320px;
    position: relative;
}
/* 核心动效：重叠的设备节点 */
.sync-nodes {
    position: relative;
    width: 100%;
    padding-bottom: 100%;
}
.node-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 160px;
    height: 160px;
    background: var(--color-surface);
    border-radius: 50%;
    box-shadow: var(--shadow-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    border: 4px solid var(--color-bg-main);
}
.node-orbit {
    position: absolute;
    width: 90px;
    height: 90px;
    background: var(--color-surface);
    border-radius: var(--radius-base);
    box-shadow: var(--shadow-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
    animation: float 6s ease-in-out infinite;
}
.node-orbit:nth-child(2) { top: 10%; left: 15%; animation-delay: 0s; }
.node-orbit:nth-child(3) { top: 20%; right: 10%; animation-delay: -2s; }
.node-orbit:nth-child(4) { bottom: 15%; left: 30%; animation-delay: -4s; }

/* 连线与动画 */
.node-lines {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    z-index: 1;
}
.line-path {
    stroke: var(--color-brand);
    stroke-width: 2;
    stroke-dasharray: 8 8;
    fill: none;
    animation: dash 20s linear infinite;
    opacity: 0.6;
}
@keyframes dash {
    to { stroke-dashoffset: -1000; }
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* 数据资产同步区块 (Article) */
.hearth {
    padding: 80px 0;
}
.howl-tier2 {
    font-size: 2.4rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
}
.yarn-center {
    text-align: center;
    color: var(--color-text-sub);
    max-width: 600px;
    margin: 0 auto 64px auto;
    font-size: 1.1rem;
}
.clan-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}
.ember {
    background: var(--color-surface);
    padding: 48px 40px;
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
    border: 1px solid var(--color-border);
}
.ember:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: var(--color-brand-light);
}
.mark-wrap {
    width: 64px;
    height: 64px;
    background: var(--color-brand-light);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}
.mark-svg {
    width: 32px;
    height: 32px;
    fill: var(--color-brand-dark);
}
.howl-tier3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--color-text-main);
}

/* 一键发送网页区块 (Div) */
.orbit {
    margin: 80px 0;
    padding: 80px 0;
    background: linear-gradient(to bottom, #ffffff 0%, var(--color-bg-main) 100%);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}
.orbit-pack {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}
.orbit-yarn {
    flex: 1;
    min-width: 300px;
}
.orbit-gaze {
    flex: 1;
    min-width: 340px;
    height: 300px;
    position: relative;
    background: var(--color-surface);
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
/* 发送标签页交互动效 */
.device-phone {
    position: absolute;
    left: 40px;
    width: 80px;
    height: 160px;
    background: var(--color-bg-main);
    border: 4px solid var(--color-text-sub);
    border-radius: 16px;
}
.device-laptop {
    position: absolute;
    right: 40px;
    width: 180px;
    height: 120px;
    background: var(--color-bg-main);
    border: 4px solid var(--color-text-sub);
    border-radius: 8px 8px 0 0;
}
.device-laptop::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: -20px;
    width: 212px;
    height: 8px;
    background: var(--color-text-sub);
    border-radius: 0 0 8px 8px;
}
.tab-fly {
    position: absolute;
    left: 90px;
    width: 60px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-brand) 0%, var(--color-brand-dark) 100%);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(112, 226, 201, 0.5);
    animation: send-tab 3s ease-in-out infinite;
    display: flex;
    align-items: center;
    justify-content: center;
}
.tab-fly::before {
    content: '';
    width: 30px;
    height: 4px;
    background: #fff;
    border-radius: 2px;
}
@keyframes send-tab {
    0% { transform: translate(0, 0) scale(0.5); opacity: 0; }
    20% { transform: translate(0, -20px) scale(1); opacity: 1; }
    50% { transform: translate(140px, -20px) scale(1); opacity: 1; }
    80% { transform: translate(140px, 40px) scale(0.5); opacity: 0; }
    100% { transform: translate(140px, 40px) scale(0.5); opacity: 0; }
}

/* 端到端加密区块 (Article) */
.pelt {
    padding: 100px 0;
    text-align: center;
}
.pelt-mark {
    width: 100px;
    height: 100px;
    margin: 0 auto 32px auto;
    background: var(--color-surface);
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 16px 40px rgba(78, 191, 154, 0.2);
    position: relative;
}
.pelt-mark::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 34px;
    background: linear-gradient(135deg, var(--color-brand), transparent);
    z-index: -1;
    opacity: 0.5;
}
.pelt-svg {
    width: 48px;
    height: 48px;
    fill: var(--color-brand-dark);
}
.pelt-fold {
    max-width: 700px;
    margin: 0 auto;
}

/* 页脚区域 */
.den {
    background: var(--color-surface);
    padding: 64px 0 40px 0;
    border-top: 1px solid var(--color-border);
    margin-top: 80px;
}
.den-pack {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
}
.den-yarn {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-main);
    margin-bottom: 8px;
}
.den-sub {
    color: var(--color-text-sub);
    font-size: 0.9rem;
}
.den-links {
    display: flex;
    gap: 32px;
}
.den-scent {
    color: var(--color-text-sub);
    font-size: 0.95rem;
}
.den-scent:hover {
    color: var(--color-brand-dark);
}

/* 响应式断点 */
@media (max-width: 1024px) {
    .pack { display: none; } /* 简易处理顶部导航在平板以下，实际应有汉堡菜单，此处遵循不增加额外JS复杂度的原则或保留原样。但为防破坏布局，保留结构 */
    .crown-clan { justify-content: center; } /* 隐藏菜单后居中Logo */
    .crown-clan .pack { display: none; } /* 仅隐藏子菜单 */
    
    .howl-prime { font-size: 2.8rem; }
    .blaze-fold, .orbit-pack { flex-direction: column; text-align: center; }
    .blaze-gaze { order: -1; width: 100%; max-width: 400px; margin: 0 auto; }
}

@media (max-width: 768px) {
    .howl-prime { font-size: 2.2rem; }
    .clan-grid { grid-template-columns: 1fr; }
    .orbit-gaze { width: 100%; min-width: auto; height: 240px; }
    .den-pack { flex-direction: column; text-align: center; }
    .den-links { justify-content: center; flex-wrap: wrap; }
}

.prowl-crown-fold .prowl-globe{
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

.prowl-crown-fold{
            background-color: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid #e2ede9;
            padding: 16px 0;
        }

.prowl-crown-fold .prowl-crown-clan{
            display: flex;
            flex-wrap: wrap;
            min-width: 0;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
        }

.prowl-crown-fold .prowl-crest{
            display: flex;
            align-items: center;
            min-width: 0;
        }

.prowl-crown-fold .prowl-crest img{
            height: 36px;
            width: auto;
            display: block;
        }

.prowl-crown-fold .prowl-pack{
            display: flex;
            flex-wrap: wrap;
            min-width: 0;
            gap: 8px;
            align-items: center;
        }

.prowl-crown-fold .prowl-scent{
            padding: 10px 16px;
            border-radius: 16px;
            font-size: 0.95rem;
            font-weight: 500;
            color: #566b64;
            transition: all 0.25s ease;
            min-width: 0;
        }

.prowl-crown-fold .prowl-scent:hover{
            background-color: rgba(112, 226, 201, 0.1);
            color: #4ebf9a;
        }

.prowl-crown-fold .prowl-scent-active{
            background-color: #70e2c9;
            color: #12211d;
            font-weight: 600;
        }

@media (max-width: 768px){.prowl-crown-fold .prowl-pack{
                display: none; 
            }}

.prowl-crown-fold {
    background: rgb(255, 255, 255);
    background-image: none;
}

.den-den {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--color-text-main);
}
.den-den,
.den-den *,
.den-den *::before,
.den-den *::after {
    box-sizing: border-box;
}

.den-den nav,
.den-den div,
.den-den section,
.den-den article,
.den-den aside,
.den-den p,
.den-den h1,
.den-den h2,
.den-den h3,
.den-den h4,
.den-den h5,
.den-den h6,
.den-den a {
    margin: 0;
    padding: 0;
    font: inherit;
    color: inherit;
    letter-spacing: inherit;
    line-height: inherit;
}

.den-den p,
.den-den h1,
.den-den h2,
.den-den h3,
.den-den h4,
.den-den h5,
.den-den h6 {
    text-decoration: none;
}

.den-den img {
    display: block;
    max-width: 100%;
    height: auto;
    border: 0;
}

.den-den {
    box-shadow: none;
    filter: none;
    text-shadow: none;
    background-image: none;
    border-top: none;
    border-left: none;
    border-right: none;
    outline: none;
}

.den-den a,
.den-den a:hover,
.den-den a:focus,
.den-den a:active {
    background: transparent;
    box-shadow: none;
    outline: none;
    text-decoration: none;
}

.den-den .den-howl{
            font-weight: 700;
            white-space: normal;
            word-break: break-word;
            overflow-wrap: break-word;
            color: #23352f;
        }

.den-den .den-yarn{
            word-break: break-word;
            overflow-wrap: break-word;
            word-break: keep-all;
            color: #566b64;
            line-height: 1.8;
        }

.den-den .den-globe{
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

.den-den .den-pack{
            display: flex;
            flex-wrap: wrap;
            min-width: 0;
            gap: 8px;
            align-items: center;
        }

.den-den .den-scent{
            padding: 10px 16px;
            border-radius: 16px;
            font-size: 0.95rem;
            font-weight: 500;
            color: #566b64;
            transition: all 0.25s ease;
            min-width: 0;
        }

.den-den .den-scent:hover{
            background-color: rgba(112, 226, 201, 0.1);
            color: #4ebf9a;
        }

.den-den{
            background-color: #182420;
            color: #a0b2ac;
            padding: 80px 0 40px 0;
            border-top: 4px solid #70e2c9;
        }

.den-den .den-den-clan{
            display: flex;
            flex-wrap: wrap;
            min-width: 0;
            gap: 40px;
            margin-bottom: 60px;
        }

.den-den .den-den-cub{
            flex: 1 1 200px;
            min-width: 0;
        }

.den-den .den-tail-yarn{
            font-size: 1.5rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 20px;
        }

.den-den .den-den-cub .den-howl{
            color: #ffffff;
            font-size: 1.1rem;
            margin-bottom: 20px;
        }

.den-den .den-den-cub .den-pack{
            flex-direction: column;
            align-items: flex-start;
            gap: 12px;
        }

.den-den .den-den-cub .den-scent{
            padding: 0;
            color: #a0b2ac;
            font-size: 0.95rem;
        }

.den-den .den-den-cub .den-scent:hover{
            background: transparent;
            color: #70e2c9;
            transform: translateX(4px);
        }

.den-den .den-pad{
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 16px;
            min-width: 0;
            font-size: 0.85rem;
        }

@media (max-width: 768px){.den-den .den-pack{
                display: none; 
            }}