Files
blackbird/static/public/css/index.css
T
qing 546b19aece refactor(static): 重写首页,统一设计语言提升视觉和谐感
- index.html: 品牌树 SVG 扩展为 4 层节点,新增径向渐变光晕底衬;
  About 面板新增同心圆装饰 SVG;CTA 树水印重绘为紧凑 7 节点版本
- css/index.css: 统一渐变方向为 135deg;光晕/点阵透明度更克制;
  卡片 hover 阴影更柔和;树动画幅度降低周期放慢;间距节奏统一
- js/index.js: IntersectionObserver 选择器适配新 section 命名
2026-08-08 00:28:30 +00:00

774 lines
20 KiB
CSS
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/* index.css — 社区首页样式(通用主题见 theme.css)
*
* 设计原则:
* 1. 统一版心 .wrap(max-width 1024px),所有区块对齐同一内容栏
* 2. 品牌节点树 motif 贯穿 Hero / CTA / About 装饰,形成视觉呼应
* 3. 柔和的间距节奏(4.5rem 基准间距,2.25rem 组件间距)
* 4. 动效克制:入场渐显 + 品牌树描边,尊重 prefers-reduced-motion
*/
body {
align-items: stretch;
padding: 0;
}
::selection {
background: var(--accent-glow);
color: var(--fg);
}
@media (prefers-reduced-motion: no-preference) {
html { scroll-behavior: smooth; }
}
/* ===== 版心 ===== */
.wrap {
width: 100%;
max-width: 1024px;
margin: 0 auto;
padding: 0 1.25rem;
}
#main-page { width: 100%; }
/* ===== 按钮 ===== */
.btn {
display: inline-flex;
align-items: center;
justify-content: center;
padding: 0.55rem 1.3rem;
font-size: 0.88rem;
font-weight: 600;
font-family: inherit;
border: 1px solid transparent;
border-radius: var(--radius-sm);
cursor: pointer;
text-decoration: none;
line-height: 1.4;
transition: transform 0.2s ease, background 0.2s, border-color 0.2s, box-shadow 0.25s;
}
.btn:active { transform: scale(0.96); }
.btn-primary {
position: relative;
overflow: hidden;
background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
color: #fff;
box-shadow: 0 2px 8px rgba(232, 133, 58, 0.25);
}
.btn-primary::after {
content: "";
position: absolute;
top: 0; left: -80%;
width: 50%; height: 100%;
background: linear-gradient(100deg, transparent, rgba(255,255,255,0.3), transparent);
transform: skewX(-20deg);
transition: left 0.5s ease;
pointer-events: none;
}
.btn-primary:hover {
transform: translateY(-1px);
box-shadow: 0 5px 16px rgba(232, 133, 58, 0.35);
}
.btn-primary:hover::after { left: 130%; }
.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: 0.72rem 1.8rem; font-size: 0.95rem; border-radius: 999px; letter-spacing: 0.02em; }
/* ===== 头部 ===== */
.header {
position: sticky;
top: 0.75rem;
z-index: 100;
margin-top: 0.75rem;
}
.header-inner {
display: flex;
justify-content: space-between;
align-items: center;
flex-wrap: wrap;
gap: 0.5rem;
padding: 0.5rem 1rem;
border-radius: var(--radius-lg);
background: rgba(253, 246, 238, 0.75);
border: 1px solid var(--border-light);
backdrop-filter: blur(18px) saturate(1.5);
-webkit-backdrop-filter: blur(18px) saturate(1.5);
box-shadow: var(--shadow-sm);
transition: background 0.25s, border-color 0.25s, box-shadow 0.25s;
}
@media (prefers-color-scheme: dark) {
.header-inner {
background: rgba(30, 23, 18, 0.78);
border-color: var(--border);
}
}
.header h1 {
display: flex;
align-items: center;
gap: 0.45rem;
font-size: 1.1rem;
font-weight: 700;
letter-spacing: 0.01em;
cursor: pointer;
user-select: none;
transition: color 0.2s;
}
.header h1 svg { color: var(--accent); flex: none; }
.header h1:hover { color: var(--accent); }
.right-group {
display: flex;
align-items: center;
flex-wrap: wrap;
gap: 0.4rem;
}
#avatar {
width: 34px;
height: 34px;
border-radius: 50%;
border: 1.5px solid var(--border);
object-fit: cover;
}
#name {
font-size: 0.85rem;
max-width: 120px;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
/* ===== Hero ===== */
.hero {
position: relative;
text-align: center;
padding: 5rem 0 6rem;
overflow: hidden;
}
/* 点阵底纹 */
.hero::before {
content: "";
position: absolute;
inset: 0;
background-image: radial-gradient(var(--border) 1px, transparent 1px);
background-size: 28px 28px;
-webkit-mask-image: radial-gradient(ellipse 65% 55% at 50% 45%, #000 20%, transparent 70%);
mask-image: radial-gradient(ellipse 65% 55% at 50% 45%, #000 20%, transparent 70%);
pointer-events: none;
opacity: 0.7;
}
/* 暖色光晕 */
.hero::after {
content: "";
position: absolute;
left: 50%; top: 44%;
width: 600px; height: 600px;
transform: translate(-50%, -50%);
background: radial-gradient(circle, var(--accent-glow), transparent 55%),
radial-gradient(ellipse 50% 35% at 50% 60%, var(--accent-soft), transparent 65%);
opacity: 0.45;
pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; }
/* 品牌树装饰 */
.hero-bg {
position: absolute;
inset: 0;
display: flex;
align-items: flex-end;
justify-content: center;
pointer-events: none;
z-index: 0;
}
.hero-tree {
width: min(700px, 92%);
height: auto;
color: var(--accent);
opacity: 0.13;
margin-bottom: -2%;
}
@media (prefers-color-scheme: dark) {
.hero-tree { opacity: 0.18; }
}
/* 徽章 */
.hero-badge {
display: inline-flex;
align-items: center;
gap: 0.45rem;
padding: 0.32rem 0.9rem;
margin-bottom: 1.5rem;
font-size: 0.78rem;
font-weight: 600;
letter-spacing: 0.06em;
color: var(--accent-dark);
background: var(--accent-soft);
border: 1px solid var(--accent-glow);
border-radius: 999px;
}
.badge-dot {
width: 6px;
height: 6px;
border-radius: 50%;
background: var(--accent);
flex: none;
}
.hero-title {
font-size: clamp(2rem, 6vw, 3rem);
font-weight: 800;
line-height: 1.3;
letter-spacing: 0.02em;
text-wrap: balance;
margin-bottom: 1rem;
}
.accent-text {
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: 1rem;
letter-spacing: 0.02em;
color: var(--fg-secondary);
max-width: 30rem;
margin: 0 auto;
line-height: 1.85;
}
.hero-actions {
display: flex;
justify-content: center;
flex-wrap: wrap;
gap: 0.85rem;
margin-top: 2.2rem;
}
.scroll-hint {
position: absolute;
left: 50%; bottom: 1.2rem;
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: 20px; height: 20px; }
/* ===== 章节节奏与标题组 ===== */
.section { padding-top: 5rem; }
#features { scroll-margin-top: 5.5rem; }
.section-eyebrow {
text-align: center;
font-size: 0.76rem;
font-weight: 700;
letter-spacing: 0.3em;
text-indent: 0.3em;
color: var(--accent);
text-transform: uppercase;
}
.section-title {
text-align: center;
margin-top: 0.65rem;
margin-bottom: 0;
font-size: 1.5rem;
font-weight: 700;
letter-spacing: 0.02em;
}
.section-title::after {
content: "";
display: block;
width: 40px;
height: 2.5px;
margin: 0.6rem auto 0;
border-radius: 2px;
background: linear-gradient(90deg, var(--accent), var(--accent-dark));
opacity: 0.85;
}
.section-sub {
text-align: center;
margin-top: 0.85rem;
font-size: 0.92rem;
letter-spacing: 0.03em;
color: var(--fg-secondary);
}
/* ===== 特性卡片 ===== */
.features {
display: grid;
grid-template-columns: repeat(2, 1fr);
gap: 1.15rem;
margin-top: 2.5rem;
}
.feature-card {
position: relative;
display: flex;
flex-direction: column;
background: var(--card);
background-image: radial-gradient(240px circle at var(--mx, 50%) var(--my, 0%), var(--accent-soft), transparent 75%);
border: 1px solid var(--border-light);
border-radius: var(--radius-lg);
padding: 1.6rem 1.4rem 1.3rem;
box-shadow: var(--shadow-sm);
overflow: hidden;
transition: transform 0.25s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
/* 顶部渐变线(hover 显现) */
.feature-card::before {
content: "";
position: absolute;
top: 0; left: 0; right: 0;
height: 2.5px;
background: linear-gradient(90deg, var(--accent), var(--accent-dark));
opacity: 0;
transition: opacity 0.3s;
}
.feature-card:hover {
transform: translateY(-4px);
border-color: var(--accent-glow);
box-shadow: 0 8px 24px rgba(74, 55, 40, 0.08);
}
.feature-card:hover::before { opacity: 0.85; }
.feature-icon {
display: flex;
align-items: center;
justify-content: center;
width: 44px;
height: 44px;
margin-bottom: 0.85rem;
border-radius: 12px;
background: linear-gradient(135deg, var(--accent-soft), rgba(232, 133, 58, 0.12));
color: var(--accent-dark);
transition: transform 0.3s, background 0.3s, color 0.3s, box-shadow 0.3s;
}
.feature-icon svg { width: 20px; height: 20px; }
.feature-card:hover .feature-icon {
background: linear-gradient(135deg, var(--accent), var(--accent-dark));
color: #fff;
transform: translateY(-2px) scale(1.05);
box-shadow: 0 5px 12px rgba(232, 133, 58, 0.3);
}
.feature-body { flex: 1; }
.feature-body h3 { margin-bottom: 0.35rem; font-size: 1rem; letter-spacing: 0.01em; }
.feature-body p {
font-size: 0.86rem;
line-height: 1.75;
color: var(--fg-secondary);
}
.feature-tag {
align-self: flex-start;
margin-top: 0.9rem;
padding: 0.2rem 0.65rem;
font-size: 0.7rem;
font-weight: 600;
letter-spacing: 0.08em;
color: var(--accent-dark);
background: var(--accent-soft);
border: 1px solid var(--accent-glow);
border-radius: 999px;
transition: color 0.25s, border-color 0.25s;
}
.feature-card:hover .feature-tag {
color: var(--accent);
border-color: var(--accent);
}
/* ===== 关于本站 ===== */
.about-section { position: relative; }
.about-panel {
position: relative;
text-align: center;
background: var(--card);
border: 1px solid var(--border-light);
border-radius: var(--radius-lg);
box-shadow: var(--shadow-sm);
padding: 2.2rem 2.2rem 1.8rem;
margin-top: 2.5rem;
overflow: hidden;
transition: border-color 0.3s, box-shadow 0.3s;
}
.about-panel:hover {
border-color: var(--border);
box-shadow: var(--shadow-md);
}
/* 顶部品牌线 */
.about-panel::before {
content: "";
position: absolute;
top: 0; left: 0; right: 0;
height: 2.5px;
background: linear-gradient(90deg, var(--accent), var(--accent-dark));
opacity: 0.8;
}
/* 装饰同心圆 */
.about-deco {
position: absolute;
right: -40px; bottom: -40px;
width: 180px; height: 180px;
color: var(--accent);
pointer-events: none;
opacity: 0.6;
}
.site-intro {
position: relative;
max-width: 38rem;
margin: 0 auto;
font-size: 0.94rem;
line-height: 2;
color: var(--fg-secondary);
}
.about-stats {
list-style: none;
display: flex;
justify-content: space-around;
gap: 1rem;
margin-top: 1.6rem;
padding-top: 1.4rem;
border-top: 1px solid var(--border-light);
}
.about-stats li {
display: flex;
flex-direction: column;
align-items: center;
gap: 0.2rem;
min-width: 0;
}
.about-stats b {
font-size: 1.4rem;
font-weight: 800;
line-height: 1.1;
letter-spacing: 0.02em;
background: linear-gradient(120deg, var(--accent), var(--accent-dark));
-webkit-background-clip: text;
background-clip: text;
color: transparent;
}
.about-stats span {
font-size: 0.76rem;
letter-spacing: 0.02em;
color: var(--muted);
}
.quick-links {
display: flex;
justify-content: center;
flex-wrap: wrap;
gap: 0.85rem;
margin-top: 1.8rem;
}
.quick-links a {
display: inline-flex;
align-items: center;
gap: 0.35rem;
padding: 0.48rem 1.1rem;
font-size: 0.84rem;
font-weight: 600;
color: var(--fg-secondary);
background: var(--card);
border: 1px solid var(--border);
border-radius: 999px;
text-decoration: none;
box-shadow: var(--shadow-sm);
transition: color 0.2s, border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.quick-links a::after {
content: "→";
font-size: 0.85em;
transition: transform 0.2s;
}
.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); }
/* ===== CTA 横幅 ===== */
.cta-band {
position: relative;
overflow: hidden;
text-align: center;
padding: 3.2rem 1.5rem 3.4rem;
border-radius: var(--radius-lg);
background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
color: #fff;
box-shadow: 0 12px 30px rgba(232, 133, 58, 0.22);
}
/* 底部点阵 */
.cta-band::before {
content: "";
position: absolute;
inset: 0;
background-image: radial-gradient(rgba(255,255,255,0.18) 1px, transparent 1px);
background-size: 24px 24px;
-webkit-mask-image: radial-gradient(ellipse 70% 75% at 50% 110%, #000 15%, transparent 68%);
mask-image: radial-gradient(ellipse 70% 75% at 50% 110%, #000 15%, transparent 68%);
pointer-events: none;
}
/* 顶部高光线 */
.cta-band::after {
content: "";
position: absolute;
left: 0; right: 0; top: 0;
height: 1px;
background: linear-gradient(90deg, transparent, rgba(255,255,255,0.45), transparent);
}
.cta-tree {
position: absolute;
right: -10px; bottom: -16px;
width: min(300px, 50%);
height: auto;
color: #fff;
opacity: 0.12;
pointer-events: none;
}
.cta-title {
position: relative;
font-size: clamp(1.4rem, 3.5vw, 1.85rem);
font-weight: 800;
letter-spacing: 0.03em;
margin-bottom: 0;
}
.cta-sub {
position: relative;
margin-top: 0.6rem;
font-size: 0.92rem;
letter-spacing: 0.04em;
opacity: 0.9;
}
.btn-cta {
position: relative;
margin-top: 1.5rem;
background: #fff;
color: var(--accent-dark);
box-shadow: 0 5px 14px rgba(0,0,0,0.12);
}
.btn-cta:hover {
transform: translateY(-2px);
box-shadow: 0 8px 20px rgba(0,0,0,0.16);
}
@media (prefers-color-scheme: dark) {
.cta-band {
color: #38220f;
box-shadow: 0 12px 30px rgba(0,0,0,0.4);
}
.cta-band::before {
background-image: radial-gradient(rgba(56,34,15,0.14) 1px, transparent 1px);
}
.cta-band::after {
background: linear-gradient(90deg, transparent, rgba(56,34,15,0.3), transparent);
}
.cta-tree { color: #38220f; opacity: 0.14; }
.btn-cta { background: #38220f; color: #f7ead9; }
}
/* ===== 页脚 ===== */
.footer {
width: 100%;
margin-top: auto;
padding-top: 5rem;
padding-bottom: 1.5rem;
}
.footer-inner {
display: flex;
flex-direction: column;
align-items: center;
gap: 0.8rem;
padding-top: 1.6rem;
border-top: 1px solid var(--border-light);
text-align: center;
font-size: 0.75rem;
color: var(--muted);
}
.footer-brand {
display: flex;
align-items: center;
gap: 0.45rem;
font-size: 0.92rem;
font-weight: 700;
letter-spacing: 0.02em;
color: var(--fg);
}
.footer-brand svg { color: var(--accent); }
.footer-nav {
display: flex;
flex-wrap: wrap;
justify-content: center;
gap: 0.35rem 1.5rem;
}
.footer-nav a {
font-size: 0.82rem;
color: var(--fg-secondary);
text-decoration: none;
transition: color 0.15s;
}
.footer-nav a:hover { color: var(--accent); }
.footer-icp { margin-top: 0.1rem; }
.footer-icp a {
color: var(--muted);
text-decoration: none;
transition: color 0.15s;
}
.footer-icp a:hover { color: var(--accent); }
/* ===== 动画 ===== */
@keyframes fade-up {
from { opacity: 0; transform: translateY(12px); }
to { opacity: 1; transform: none; }
}
@keyframes tree-draw { to { stroke-dashoffset: 0; } }
@keyframes node-pop {
from { opacity: 0; transform: scale(0); }
to { opacity: 1; transform: scale(1); }
}
@keyframes tree-sway {
0%, 100% { transform: rotate(0deg); }
50% { transform: rotate(0.5deg); }
}
@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 4px transparent; }
}
@keyframes hint-bounce {
0%, 100% { transform: translateY(0); }
50% { transform: translateY(4px); }
}
@media (prefers-reduced-motion: no-preference) {
/* Hero 入场 */
.hero-inner > * {
animation: fade-up 0.5s ease both;
}
.hero-badge { animation-delay: 0s; }
.hero-title { animation-delay: 0.06s; }
.hero-sub { animation-delay: 0.12s; }
.hero-actions { animation-delay: 0.2s; }
.accent-text { animation: text-shine 8s linear infinite; }
.badge-dot { animation: badge-pulse 2.8s ease-in-out infinite; }
.scroll-hint svg { animation: hint-bounce 2.2s ease-in-out infinite; }
/* 品牌树描绘 */
.hero-tree {
animation: tree-sway 12s ease-in-out 3s infinite;
transform-origin: 50% 100%;
}
.tree-branches path {
stroke-dasharray: 100;
stroke-dashoffset: 100;
animation: tree-draw 0.8s ease-out forwards;
}
.tree-branches path:nth-of-type(1) { animation-delay: 0.1s; }
.tree-branches path:nth-of-type(2),
.tree-branches path:nth-of-type(3) { animation-delay: 0.6s; }
.tree-branches path:nth-of-type(n+4) { animation-delay: 1.1s; }
.tree-nodes circle {
opacity: 0;
transform-box: fill-box;
transform-origin: center;
animation: node-pop 0.4s ease-out forwards;
}
.tree-nodes circle:nth-of-type(1) { animation-delay: 0.15s; }
.tree-nodes circle:nth-of-type(2) { animation-delay: 0.7s; }
.tree-nodes circle:nth-of-type(3),
.tree-nodes circle:nth-of-type(4) { animation-delay: 1.2s; }
.tree-nodes circle:nth-of-type(n+5) { animation-delay: 1.7s; }
}
/* ===== 滚动渐显 ===== */
.reveal {
opacity: 0;
transform: translateY(16px);
transition: opacity 0.55s ease, transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.reveal-in { opacity: 1; transform: none; }
/* ===== 响应式 ===== */
@media (hover: none) and (pointer: coarse) {
.btn { min-height: 44px; }
.quick-links a { padding: 0.55rem 1rem; }
}
@media (max-width: 768px) {
.hero { padding: 4rem 0 4.5rem; }
.hero::after { width: 400px; height: 400px; opacity: 0.35; }
.hero-tree { opacity: 0.1; }
.section { padding-top: 4rem; }
.footer { padding-top: 4rem; }
}
@media (max-width: 640px) {
.features { grid-template-columns: 1fr; }
.feature-card:hover { transform: none; }
}
@media (max-width: 480px) {
.wrap { padding: 0 0.85rem; }
.header { top: 0.5rem; margin-top: 0.5rem; }
.header-inner { padding: 0.4rem 0.8rem; gap: 0.35rem; }
.header h1 { font-size: 0.98rem; }
.header h1 svg { display: none; }
.right-group { gap: 0.3rem; }
.right-group .btn { padding: 0.48rem 0.9rem; font-size: 0.82rem; }
#name { max-width: 72px; }
.hero { padding: 2.8rem 0 2.8rem; }
.hero::after { width: 280px; height: 280px; opacity: 0.3; }
.hero-tree { opacity: 0.08; }
.hero-badge { font-size: 0.72rem; padding: 0.28rem 0.75rem; margin-bottom: 1.1rem; }
.hero-title { margin-bottom: 0.7rem; }
.hero-sub { font-size: 0.92rem; }
.hero-sub br { display: none; }
.hero-actions {
flex-direction: column;
align-items: stretch;
gap: 0.6rem;
}
.hero-actions .btn-lg { width: 100%; padding: 0.82rem 1.4rem; }
.scroll-hint { display: none; }
.section { padding-top: 3rem; }
.section-title { font-size: 1.25rem; }
.features { margin-top: 1.8rem; gap: 0.9rem; }
.feature-card { padding: 1.3rem 1.2rem 1.1rem; }
.about-panel { padding: 1.5rem 1.2rem 1.3rem; margin-top: 1.8rem; }
.about-stats { margin-top: 1.3rem; padding-top: 1.1rem; gap: 0.5rem; }
.quick-links { gap: 0.55rem 0.7rem; margin-top: 1.4rem; }
.cta-band { padding: 2.5rem 1.1rem 2.6rem; }
.cta-tree { width: 70%; opacity: 0.08; }
.footer { padding-top: 3rem; }
}
@media (max-width: 360px) {
.header h1 { font-size: 0.92rem; }
.right-group .btn { padding: 0.42rem 0.75rem; font-size: 0.78rem; }
.hero { padding: 2.2rem 0 2.2rem; }
}