feat(static): 优化社区首页美观度与高级感

- index.html: hero 新增品牌徽章、节点树装饰 SVG、下滑提示；章节增加 eyebrow 小标题
- index.css: 主按钮渐变+扫光、卡片序号水印+图标点亮、标题渐变流光、点阵底纹、
  品牌树描绘动画、关于卡装饰、胶囊快捷链接；全部基于 theme.css 变量，深浅色自适应
- index.js: 追加滚动渐显（IntersectionObserver）与特性卡片光标光斑，与登录逻辑解耦

static/public/css/index.css

@@ -4,6 +4,12 @@ body {
     align-items: normal;
 }
 
+/* 选中文字着色，与品牌色一致 */
+::selection {
+    background: var(--accent-glow);
+    color: var(--fg);
+}
+
 @media (prefers-reduced-motion: no-preference) {
     html { scroll-behavior: smooth; }
 }
@@ -22,14 +28,44 @@ body {
     cursor: pointer;
     text-decoration: none;
     line-height: 1.4;
-    transition: opacity 0.15s, transform 0.1s, background 0.15s, border-color 0.15s;
+    transition: opacity 0.15s, transform 0.18s, background 0.18s, border-color 0.18s, box-shadow 0.22s;
 }
 .btn:active { transform: scale(0.96); }
-.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 2px 8px rgba(232, 133, 58, 0.28); }
+
-.btn-primary:hover { background: var(--accent-dark); opacity: 1; box-shadow: 0 4px 14px rgba(232, 133, 58, 0.36); }
+/* 主按钮：品牌渐变 + hover 上浮与扫光 */
-.btn-ghost { background: var(--accent-soft); color: var(--accent-dark); }
+.btn-primary {
-.btn-ghost:hover { border-color: var(--accent); opacity: 1; }
+    position: relative;
-.btn-lg { padding: 0.7rem 1.9rem; font-size: 1rem; border-radius: var(--radius-md); }
+    overflow: hidden;
+    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
+    color: #fff;
+    box-shadow: 0 2px 10px rgba(232, 133, 58, 0.32);
+}
+.btn-primary::after {
+    content: "";
+    position: absolute;
+    top: 0;
+    left: -80%;
+    width: 50%;
+    height: 100%;
+    background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.35), transparent);
+    transform: skewX(-20deg);
+    transition: left 0.5s ease;
+    pointer-events: none;
+}
+.btn-primary:hover {
+    transform: translateY(-1px);
+    box-shadow: 0 6px 18px rgba(232, 133, 58, 0.4);
+}
+.btn-primary:hover::after { left: 130%; }
+.btn-primary:active { transform: scale(0.96); }
+
+.btn-ghost {
+    background: var(--accent-soft);
+    color: var(--accent-dark);
+    border-color: var(--accent-glow);
+}
+.btn-ghost:hover { border-color: var(--accent); transform: translateY(-1px); }
+.btn-lg { padding: 0.75rem 2rem; font-size: 1rem; border-radius: 999px; letter-spacing: 0.02em; }
 
 /* ===== 头部：悬浮毛玻璃导航（镜像 minimap/userpanel 风格） ===== */
 .header {
@@ -44,12 +80,12 @@ body {
     width: 100%;
     max-width: 960px;
     margin: 0 auto;
-    padding: 0.5rem 1rem;
+    padding: 0.55rem 1.1rem;
-    border-radius: var(--radius-md);
+    border-radius: var(--radius-lg);
     background: rgba(253, 246, 238, 0.72);
     border: 1px solid var(--border-light);
-    backdrop-filter: blur(12px);
+    backdrop-filter: blur(16px) saturate(1.4);
-    -webkit-backdrop-filter: blur(12px);
+    -webkit-backdrop-filter: blur(16px) saturate(1.4);
     box-shadow: var(--shadow-md);
     transition: background 0.2s, border-color 0.2s;
 }
@@ -95,95 +131,180 @@ body {
     white-space: nowrap;
 }
 
+#main-page { width: 100%; }
+
 /* ===== Hero 首屏 ===== */
 .hero {
     position: relative;
     text-align: center;
-    padding: 6rem 1rem 5rem;
+    padding: 4.5rem 1rem 5.5rem;
+    overflow: hidden;
 }
+/* 点阵底纹：中心清晰、四周渐隐 */
 .hero::before {
     content: "";
     position: absolute;
     inset: 0;
-    background: radial-gradient(ellipse 60% 50% at 50% 30%, var(--accent-glow), transparent 70%);
+    background-image: radial-gradient(var(--border) 1.2px, transparent 1.2px);
+    background-size: 26px 26px;
+    -webkit-mask-image: radial-gradient(ellipse 70% 62% at 50% 42%, #000 25%, transparent 72%);
+    mask-image: radial-gradient(ellipse 70% 62% at 50% 42%, #000 25%, transparent 72%);
     pointer-events: none;
 }
+/* 暖色环境光晕 */
 .hero::after {
     content: "";
     position: absolute;
     left: 50%;
-    top: 52%;
+    top: 46%;
-    width: 640px;
+    width: 680px;
-    height: 640px;
+    height: 680px;
     transform: translate(-50%, -50%);
-    background: radial-gradient(circle, var(--accent-glow), transparent 62%);
+    background:
-    opacity: 0.5;
+        radial-gradient(circle, var(--accent-glow), transparent 60%),
+        radial-gradient(ellipse 55% 40% at 50% 62%, var(--accent-soft), transparent 70%);
+    opacity: 0.55;
     pointer-events: none;
 }
-.hero > * { position: relative; z-index: 1; }
+.hero-inner { position: relative; z-index: 1; }
-.hero-title {
+
-    font-size: clamp(2rem, 6vw, 3rem);
+/* 品牌装饰：节点树（低透明度衬底，不干扰阅读） */
-    font-weight: 800;
+.hero-tree {
-    line-height: 1.28;
+    position: absolute;
-    letter-spacing: 0.02em;
+    left: 50%;
-    margin-bottom: 1rem;
+    bottom: -8px;
+    transform: translateX(-50%);
+    width: min(600px, 96%);
+    height: auto;
+    color: var(--accent);
+    opacity: 0.16;
+    pointer-events: none;
 }
+@media (prefers-color-scheme: dark) {
+    .hero-tree { opacity: 0.2; }
+}
+
+/*  eyebrow 徽章：呼吸圆点 + 胶囊 */
+.hero-badge {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.45rem;
+    padding: 0.35rem 0.95rem;
+    margin-bottom: 1.4rem;
+    font-size: 0.8rem;
+    font-weight: 600;
+    letter-spacing: 0.06em;
+    color: var(--accent-dark);
+    background: var(--accent-soft);
+    border: 1px solid var(--accent-glow);
+    border-radius: 999px;
+    backdrop-filter: blur(4px);
+    -webkit-backdrop-filter: blur(4px);
+}
+.badge-dot {
+    width: 6px;
+    height: 6px;
+    border-radius: 50%;
+    background: var(--accent);
+    flex: none;
+}
+
+.hero-title {
+    font-size: clamp(2.1rem, 6.5vw, 3.3rem);
+    font-weight: 800;
+    line-height: 1.26;
+    letter-spacing: 0.04em;
+    text-wrap: balance;
+    margin-bottom: 1.1rem;
+}
+/* 渐变标题字：缓慢流光 */
 .accent-text {
-    background: linear-gradient(120deg, var(--accent) 20%, var(--accent-dark) 80%);
+    background: linear-gradient(120deg, var(--accent) 15%, var(--accent-dark) 45%, var(--accent) 85%);
+    background-size: 220% auto;
     -webkit-background-clip: text;
     background-clip: text;
     color: transparent;
 }
 .hero-sub {
     font-size: 1.08rem;
+    letter-spacing: 0.03em;
     color: var(--fg-secondary);
-    max-width: 30rem;
+    max-width: 32rem;
     margin: 0 auto;
-    line-height: 1.7;
+    line-height: 1.75;
 }
 .hero-actions {
     display: flex;
     justify-content: center;
     flex-wrap: wrap;
     gap: 0.85rem;
-    margin-top: 2.1rem;
+    margin-top: 2.2rem;
 }
 
-/* ===== 特性卡片 ===== */
+/* 下滑提示：浮动小箭头（窄屏隐藏） */
+.scroll-hint {
+    position: absolute;
+    left: 50%;
+    bottom: 1.3rem;
+    transform: translateX(-50%);
+    z-index: 1;
+    display: flex;
+    color: var(--muted);
+    transition: color 0.2s;
+}
+.scroll-hint:hover { color: var(--accent); }
+.scroll-hint svg { width: 22px; height: 22px; }
+
+/* ===== 章节标题：eyebrow + 标题 + 渐变短杠 ===== */
+.section-eyebrow {
+    text-align: center;
+    margin-top: 4.5rem;
+    font-size: 0.78rem;
+    font-weight: 700;
+    letter-spacing: 0.28em;
+    text-indent: 0.28em; /* 视觉居中补偿字距 */
+    color: var(--accent);
+}
 .section-title {
     text-align: center;
-    margin-top: 4rem;
+    margin-top: 0.7rem;
-    font-size: 1.5rem;
+    font-size: 1.55rem;
     font-weight: 700;
-    letter-spacing: 0.01em;
+    letter-spacing: 0.02em;
 }
 .section-title::after {
     content: "";
     display: block;
-    width: 44px;
+    width: 46px;
     height: 3px;
-    margin: 0.6rem auto 0;
+    margin: 0.65rem auto 0;
     border-radius: 2px;
-    background: var(--accent);
+    background: linear-gradient(90deg, var(--accent), var(--accent-dark));
-    opacity: 0.85;
+    opacity: 0.9;
 }
+
+/* ===== 特性卡片：序号水印 + 光标光斑 + 图标点亮 ===== */
 .features {
     display: grid;
     grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
     gap: 1.1rem;
     width: 100%;
     max-width: 960px;
-    margin: 1.75rem auto 0;
+    margin: 2rem auto 0;
+    counter-reset: feat;
 }
 .feature-card {
+    counter-increment: feat;
     position: relative;
     background: var(--card);
+    /* 光标光斑：JS 写入 --mx/--my，缺省停在顶部中央 */
+    background-image: radial-gradient(260px circle at var(--mx, 50%) var(--my, 0%), var(--accent-soft), transparent 75%);
     border: 1px solid var(--border-light);
-    border-radius: var(--radius-md);
+    border-radius: var(--radius-lg);
-    padding: 1.7rem 1.4rem;
+    padding: 1.8rem 1.5rem;
     box-shadow: var(--shadow-sm);
     overflow: hidden;
-    transition: transform 0.18s, box-shadow 0.2s, border-color 0.2s;
+    transition: transform 0.22s ease, box-shadow 0.25s ease, border-color 0.25s ease;
 }
 .feature-card::before {
     content: "";
@@ -194,98 +315,217 @@ body {
     height: 3px;
     background: linear-gradient(90deg, var(--accent), var(--accent-dark));
     opacity: 0;
-    transition: opacity 0.2s;
+    transition: opacity 0.25s;
+}
+/* 序号水印（编辑感装饰） */
+.feature-card::after {
+    content: "0" counter(feat);
+    position: absolute;
+    top: 1rem;
+    right: 1.2rem;
+    font-size: 1.55rem;
+    font-weight: 800;
+    line-height: 1;
+    letter-spacing: 0.02em;
+    color: var(--border);
+    transition: color 0.25s;
+    pointer-events: none;
 }
 .feature-card:hover {
-    transform: translateY(-4px);
+    transform: translateY(-5px);
     border-color: var(--accent);
     box-shadow: var(--shadow-md);
 }
 .feature-card:hover::before { opacity: 0.9; }
+.feature-card:hover::after { color: var(--accent-glow); }
 .feature-icon {
     display: flex;
     align-items: center;
     justify-content: center;
-    width: 44px;
+    width: 46px;
-    height: 44px;
+    height: 46px;
-    margin-bottom: 0.9rem;
+    margin-bottom: 0.95rem;
-    border-radius: var(--radius-sm);
+    border-radius: 13px;
     background: linear-gradient(135deg, var(--accent-soft), rgba(232, 133, 58, 0.16));
     color: var(--accent-dark);
+    transition: transform 0.25s, background 0.25s, color 0.25s, box-shadow 0.25s;
 }
 .feature-icon svg { width: 22px; height: 22px; }
-.feature-card h3 { margin-bottom: 0.4rem; font-size: 1.05rem; }
+.feature-card:hover .feature-icon {
+    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
+    color: #fff;
+    transform: translateY(-2px) scale(1.06);
+    box-shadow: 0 6px 14px rgba(232, 133, 58, 0.35);
+}
+.feature-card h3 { margin-bottom: 0.4rem; font-size: 1.05rem; letter-spacing: 0.01em; }
 .feature-card p {
     font-size: 0.88rem;
-    line-height: 1.7;
+    line-height: 1.75;
     color: var(--fg-secondary);
 }
 
 /* ===== 关于本站 ===== */
 .about {
     text-align: center;
-    padding: 1rem 1rem 3rem;
+    padding: 1rem 1rem 3.5rem;
-    max-width: 760px;
+    max-width: 780px;
     margin: 0 auto;
 }
+.about .section-eyebrow, .about .section-title { margin-top: 0; }
 .about .site-intro {
+    position: relative;
     background: var(--card);
     border: 1px solid var(--border-light);
-    border-radius: var(--radius-md);
+    border-radius: var(--radius-lg);
     box-shadow: var(--shadow-sm);
-    padding: 1.75rem 1.9rem;
+    padding: 2rem 2.2rem;
+    margin-top: 2rem;
+    overflow: hidden;
+}
+/* 左侧品牌渐变条 + 右上角装饰引号 */
+.about .site-intro::before {
+    content: "";
+    position: absolute;
+    left: 0;
+    top: 0;
+    bottom: 0;
+    width: 4px;
+    background: linear-gradient(180deg, var(--accent), var(--accent-dark));
+    opacity: 0.85;
+}
+.about .site-intro::after {
+    content: "”";
+    position: absolute;
+    top: -0.6rem;
+    right: 1.1rem;
+    font-family: Georgia, 'Times New Roman', serif;
+    font-size: 5rem;
+    line-height: 1;
+    color: var(--accent-soft);
+    pointer-events: none;
 }
 .site-intro {
     font-size: 0.96rem;
     line-height: 1.95;
     color: var(--fg-secondary);
 }
+/* 快捷链接：胶囊按钮 */
 .quick-links {
     display: flex;
     justify-content: center;
     flex-wrap: wrap;
-    gap: 1.5rem;
+    gap: 0.9rem;
-    margin-top: 1.75rem;
+    margin-top: 1.9rem;
 }
 .quick-links a {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.35rem;
+    padding: 0.5rem 1.15rem;
     font-size: 0.86rem;
-    color: var(--muted);
+    font-weight: 600;
+    color: var(--fg-secondary);
+    background: var(--card);
+    border: 1px solid var(--border);
+    border-radius: 999px;
     text-decoration: none;
-    padding-bottom: 1px;
+    box-shadow: var(--shadow-sm);
-    border-bottom: 1px solid transparent;
+    transition: color 0.18s, border-color 0.18s, transform 0.18s, box-shadow 0.2s;
-    transition: color 0.15s, border-color 0.15s;
 }
-.quick-links a:hover { color: var(--accent); border-bottom-color: var(--accent); }
+.quick-links a::after {
+    content: "→";
+    font-size: 0.85em;
+    transition: transform 0.18s;
+}
+.quick-links a:hover {
+    color: var(--accent);
+    border-color: var(--accent);
+    transform: translateY(-2px);
+    box-shadow: var(--shadow-md);
+}
+.quick-links a:hover::after { transform: translateX(3px); }
 
-/* ===== 入场动画 ===== */
+/* ===== 入场动画（首屏元素，页面加载即播） ===== */
 @keyframes fade-up {
-    from { opacity: 0; transform: translateY(12px); }
+    from { opacity: 0; transform: translateY(14px); }
     to { opacity: 1; transform: none; }
 }
-@media (prefers-reduced-motion: no-preference) {
+/* 品牌树：枝干描绘 + 节点弹出 + 整体轻摆 */
-    .hero > *, .feature-card, .about { animation: fade-up 0.5s ease both; }
+@keyframes tree-draw { to { stroke-dashoffset: 0; } }
-    .hero-sub { animation-delay: 0.08s; }
+@keyframes node-in {
-    .hero-actions { animation-delay: 0.16s; }
+    from { opacity: 0; transform: scale(0); }
-    .feature-card:nth-child(2) { animation-delay: 0.06s; }
+    to { opacity: 1; transform: scale(1); }
-    .feature-card:nth-child(3) { animation-delay: 0.12s; }
-    .feature-card:nth-child(4) { animation-delay: 0.18s; }
 }
+@keyframes tree-sway {
+    0%, 100% { transform: translateX(-50%) rotate(0deg); }
+    50% { transform: translateX(-50%) rotate(0.7deg); }
+}
+@keyframes text-shine { to { background-position: 220% center; } }
+@keyframes badge-pulse {
+    0%, 100% { box-shadow: 0 0 0 0 var(--accent-glow); }
+    50% { box-shadow: 0 0 0 5px transparent; }
+}
+@keyframes hint-bounce {
+    0%, 100% { transform: translateY(0); }
+    50% { transform: translateY(5px); }
+}
+
+@media (prefers-reduced-motion: no-preference) {
+    .hero-inner > * { animation: fade-up 0.55s ease both; }
+    .hero-title { animation-delay: 0.06s; }
+    .hero-sub { animation-delay: 0.14s; }
+    .hero-actions { animation-delay: 0.22s; }
+    .accent-text { animation: text-shine 7s linear infinite; }
+    .badge-dot { animation: badge-pulse 2.4s ease-in-out infinite; }
+    .scroll-hint svg { animation: hint-bounce 2s ease-in-out infinite; }
+
+    .hero-tree { animation: tree-sway 10s ease-in-out 2.8s infinite; }
+    .hero-tree path {
+        stroke-dasharray: 100;
+        stroke-dashoffset: 100;
+        animation: tree-draw 0.9s ease-out forwards;
+    }
+    .hero-tree path:nth-of-type(1) { animation-delay: 0.15s; }
+    .hero-tree path:nth-of-type(2),
+    .hero-tree path:nth-of-type(3) { animation-delay: 0.75s; }
+    .hero-tree path:nth-of-type(n+4) { animation-delay: 1.35s; }
+    .hero-tree circle {
+        opacity: 0;
+        transform-box: fill-box;
+        transform-origin: center;
+        animation: node-in 0.45s ease-out forwards;
+    }
+    .hero-tree circle:nth-of-type(1) { animation-delay: 0.2s; }
+    .hero-tree circle:nth-of-type(2) { animation-delay: 0.85s; }
+    .hero-tree circle:nth-of-type(3),
+    .hero-tree circle:nth-of-type(4) { animation-delay: 1.45s; }
+    .hero-tree circle:nth-of-type(n+5) { animation-delay: 2s; }
+}
+
+/* ===== 滚动渐显（JS 加 .reveal 隐藏、入场加 .reveal-in；无 JS 时天然可见） ===== */
+.reveal {
+    opacity: 0;
+    transform: translateY(18px);
+    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
+}
+.reveal.reveal-in { opacity: 1; transform: none; }
 
 /* ===== 响应式 ===== */
 /* 触屏设备：加大可点目标 */
 @media (hover: none) and (pointer: coarse) {
     .btn { min-height: 44px; }
-    .quick-links a { padding: 0.5rem 0.25rem; }
+    .quick-links a { padding: 0.6rem 1.1rem; }
 }
 
 /* 平板及以下：收敛首屏光晕与留白 */
 @media (max-width: 768px) {
     body { padding: 1.25rem 0.75rem; }
-    .hero { padding: 4rem 1.25rem 3.5rem; }
+    .hero { padding: 3.5rem 1.25rem 4rem; }
-    .hero::after { width: 420px; height: 420px; opacity: 0.4; }
+    .hero::after { width: 440px; height: 440px; opacity: 0.45; }
-    .hero-title { letter-spacing: 0.01em; }
+    .hero-tree { width: 130%; opacity: 0.12; }
+    .hero-title { letter-spacing: 0.02em; }
     .features { gap: 0.9rem; }
-    .feature-card { padding: 1.4rem 1.2rem; }
+    .feature-card { padding: 1.5rem 1.25rem; }
 }
 
 /* 手机：全宽布局、紧凑排版 */
@@ -302,9 +542,11 @@ body {
     .right-group .btn { padding: 0.5rem 0.95rem; font-size: 0.82rem; }
     #name { max-width: 72px; }
 
-    .hero { padding: 3rem 0.75rem 2.5rem; }
+    .hero { padding: 2.75rem 0.75rem 2.5rem; }
-    .hero::after { width: 300px; height: 300px; opacity: 0.32; }
+    .hero::after { width: 310px; height: 310px; opacity: 0.35; }
-    .hero-title { margin-bottom: 0.75rem; }
+    .hero-tree { width: 160%; opacity: 0.1; }
+    .hero-badge { font-size: 0.74rem; padding: 0.3rem 0.8rem; margin-bottom: 1.1rem; }
+    .hero-title { margin-bottom: 0.8rem; }
     .hero-sub { font-size: 0.95rem; }
     .hero-actions {
         flex-direction: column;
@@ -312,19 +554,22 @@ body {
         gap: 0.65rem;
     }
     .hero-actions .btn-lg { width: 100%; padding: 0.85rem 1.5rem; }
+    .scroll-hint { display: none; }
 
-    .section-title { margin-top: 2.5rem; font-size: 1.3rem; }
+    .section-eyebrow { margin-top: 2.75rem; }
+    .section-title { font-size: 1.3rem; }
     .features { margin-top: 1.25rem; grid-template-columns: 1fr; }
     .feature-card:hover { transform: none; } /* 触屏取消悬浮位移 */
 
     .about { padding: 0.5rem 0.5rem 2.5rem; }
-    .about .site-intro { padding: 1.4rem 1.3rem; text-align: left; }
+    .about .site-intro { padding: 1.5rem 1.4rem; text-align: left; }
-    .quick-links { gap: 1rem 1.5rem; margin-top: 1.5rem; }
+    .about .site-intro::after { font-size: 3.5rem; right: 0.8rem; }
+    .quick-links { gap: 0.6rem 0.8rem; margin-top: 1.5rem; }
 }
 
 /* 超小屏 */
 @media (max-width: 360px) {
-    .hero { padding: 2.5rem 0.5rem 2rem; }
+    .hero { padding: 2.25rem 0.5rem 2rem; }
     .header h1 { font-size: 0.95rem; }
     .right-group .btn { padding: 0.45rem 0.8rem; font-size: 0.8rem; }
 }

static/public/index.html

@@ -29,15 +29,46 @@
 
     <main id="main-page">
         <section class="hero">
-            <h2 class="hero-title">让知识像树一样<br><span class="accent-text">自然生长</span></h2>
+            <!-- 品牌装饰：节点树（生长动画见 index.css，纯装饰不影响交互） -->
-            <p class="hero-sub">每个节点都可以生长出子节点，像树枝一样层层延展</p>
+            <svg class="hero-tree" viewBox="0 0 640 360" fill="none" aria-hidden="true">
-            <div class="hero-actions">
+                <g stroke="currentColor" stroke-width="2" stroke-linecap="round">
-                <button id="ctaBtn" class="btn btn-primary btn-lg">开始记录</button>
+                    <path pathLength="100" d="M320 344 L320 262"/>
-                <a class="btn btn-ghost btn-lg" href="#features">了解更多</a>
+                    <path pathLength="100" d="M320 262 C 282 236, 238 214, 202 184"/>
+                    <path pathLength="100" d="M320 262 C 358 236, 402 214, 438 184"/>
+                    <path pathLength="100" d="M202 184 C 178 156, 156 134, 142 104"/>
+                    <path pathLength="100" d="M202 184 C 222 156, 244 134, 258 104"/>
+                    <path pathLength="100" d="M438 184 C 414 156, 396 134, 382 104"/>
+                    <path pathLength="100" d="M438 184 C 462 156, 484 134, 498 104"/>
+                </g>
+                <g fill="currentColor">
+                    <circle cx="320" cy="344" r="6"/>
+                    <circle cx="320" cy="262" r="4.5"/>
+                    <circle cx="202" cy="184" r="4.5"/>
+                    <circle cx="438" cy="184" r="4.5"/>
+                    <circle cx="142" cy="104" r="4"/>
+                    <circle cx="258" cy="104" r="4"/>
+                    <circle cx="382" cy="104" r="4"/>
+                    <circle cx="498" cy="104" r="4"/>
+                </g>
+            </svg>
+
+            <div class="hero-inner">
+                <div class="hero-badge"><span class="badge-dot"></span>树状结构 · Markdown · 多媒体分享</div>
+                <h2 class="hero-title">让知识像树一样<br><span class="accent-text">自然生长</span></h2>
+                <p class="hero-sub">每个节点都可以生长出子节点，像树枝一样层层延展</p>
+                <div class="hero-actions">
+                    <button id="ctaBtn" class="btn btn-primary btn-lg">开始记录</button>
+                    <a class="btn btn-ghost btn-lg" href="#features">了解更多</a>
+                </div>
             </div>
+
+            <a class="scroll-hint" href="#features" aria-label="下滑了解特性">
+                <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="6 9 12 15 18 9"/></svg>
+            </a>
         </section>
 
         <section id="features">
+            <p class="section-eyebrow">核心特性</p>
             <h2 class="section-title">为什么选择树状笔记</h2>
             <div class="features">
                 <div class="feature-card">
@@ -72,6 +103,7 @@
         </section>
 
         <section class="about">
+            <p class="section-eyebrow">我们的理念</p>
             <h2 class="section-title">关于本站</h2>
             <p class="site-intro">
                 DNFS 树状笔记是一个以树状结构组织内容的笔记社区：每个节点都可以生长出子节点，

static/public/js/index.js

@@ -58,3 +58,44 @@
 
 	checkLogin();
 })();
+
+/* ===== 视觉增强：滚动渐显 + 卡片光标光斑（装饰性，与登录逻辑解耦） ===== */
+(function () {
+	'use strict';
+
+	const reduceMotion = !window.matchMedia('(prefers-reduced-motion: no-preference)').matches;
+
+	/* 滚动进入视口渐显：由 JS 添加 .reveal 隐藏初始态，无 JS / 减弱动效时内容天然可见 */
+	if (!reduceMotion && 'IntersectionObserver' in window) {
+		const targets = document.querySelectorAll('.section-eyebrow, .section-title, .feature-card, .about .site-intro, .quick-links');
+		targets.forEach(function (el, i) {
+			el.classList.add('reveal');
+			el.style.transitionDelay = (i % 4) * 70 + 'ms';
+		});
+		const io = new IntersectionObserver(function (entries) {
+			entries.forEach(function (entry) {
+				if (!entry.isIntersecting) return;
+				const el = entry.target;
+				el.classList.add('reveal-in');
+				io.unobserve(el);
+				/* 动画结束后移除类与延迟，把 transition 控制权交还 hover 等交互样式 */
+				setTimeout(function () {
+					el.classList.remove('reveal', 'reveal-in');
+					el.style.transitionDelay = '';
+				}, 900);
+			});
+		}, { threshold: 0.15, rootMargin: '0px 0px -8% 0px' });
+		targets.forEach(function (el) { io.observe(el); });
+	}
+
+	/* 特性卡片光标光斑：鼠标位置写入 CSS 变量，由 index.css 径向渐变消费（仅精确指针设备） */
+	if (window.matchMedia('(hover: hover) and (pointer: fine)').matches) {
+		document.querySelectorAll('.feature-card').forEach(function (card) {
+			card.addEventListener('mousemove', function (e) {
+				const rect = card.getBoundingClientRect();
+				card.style.setProperty('--mx', (e.clientX - rect.left) + 'px');
+				card.style.setProperty('--my', (e.clientY - rect.top) + 'px');
+			});
+		});
+	}
+})();