/* ============ 基础变量：浅绿色主题 ============ */
:root {
    --green: #6cbf84;
    --green-light: #9fe0b0;
    --green-dark: #4a9c63;
    --green-soft: #eafaf0;
    --green-glass: rgba(255, 255, 255, 0.55);
    --green-glass-strong: rgba(255, 255, 255, 0.78);
    --text: #2f4a3a;
    --text-soft: #6b8576;
    --radius: 16px;
    --shadow: 0 10px 30px rgba(74, 156, 99, 0.12);
    --shadow-hover: 0 16px 40px rgba(74, 156, 99, 0.22);
    --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    color: var(--text);
    line-height: 1.7;
    min-height: 100vh;
    background:
        radial-gradient(1200px 600px at 10% -10%, var(--green-light) 0%, transparent 55%),
        radial-gradient(1000px 500px at 110% 10%, #cdeecd 0%, transparent 50%),
        linear-gradient(160deg, #f3fbf5 0%, #e6f7ec 100%);
    background-attachment: fixed;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 20px; }

/* ============ 图标通用 ============ */
.ti { vertical-align: middle; }
.logo .emoji .ti { font-size: 24px; }
.menu a .ti { font-size: 17px; }
.icon-btn .ti { font-size: 18px; }
.btn-primary .ti { font-size: 16px; }
.post-meta .ti { font-size: 15px; }
.social .ti { font-size: 18px; }
.ava .ti { font-size: 22px; }
.badge .ti { font-size: 15px; }
.widget-title .ti { font-size: 17px; }
.thumb .ti, .sm-thumb .ti { line-height: 1; }

/* 封面图 */
.thumb img, .sm-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.thumb img { border-radius: 12px; }
.sm-thumb img { border-radius: 10px; }

/* ============ 玻璃卡片 ============ */
.glass {
    background: var(--green-glass);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, 0.75);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* ============ 头部导航 ============ */
header {
    position: sticky;
    top: 0;
    z-index: 50;
    padding: 14px 0;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.7);
    transition: box-shadow .3s ease, background .3s ease;
}
header.scrolled {
    background: rgba(255, 255, 255, 0.78);
    box-shadow: 0 6px 22px rgba(74, 156, 99, 0.14);
}
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 800;
    color: var(--green-dark);
    letter-spacing: 1px;
}
.logo .emoji {
    width: 42px; height: 42px;
    display: grid; place-items: center;
    font-size: 24px;
    background: var(--green-soft);
    border: 1px solid #fff;
    border-radius: 12px;
    box-shadow: var(--shadow);
}
.menu { display: flex; gap: 6px; align-items: center; }
.menu a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 999px;
    font-weight: 600;
    color: var(--text-soft);
    transition: all .25s ease;
}
.menu a:hover, .menu a.active {
    color: var(--green-dark);
    background: var(--green-soft);
}
.nav-right { display: flex; align-items: center; gap: 12px; }
.icon-btn {
    width: 40px; height: 40px;
    display: grid; place-items: center;
    border-radius: 12px;
    background: var(--green-soft);
    border: 1px solid #fff;
    cursor: pointer;
    font-size: 16px;
    transition: transform .2s ease;
}
.icon-btn:hover { transform: translateY(-2px); color: var(--green-dark); }
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 20px;
    border: none;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%);
    color: #fff;
    font-family: var(--font);
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: transform .2s ease, box-shadow .2s ease;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    width: 40px; height: 40px;
    place-items: center;
    border-radius: 12px;
    background: var(--green-soft);
    border: 1px solid #fff;
    color: var(--green-dark);
    cursor: pointer;
    font-size: 20px;
}

/* ============ 站点标题区 ============ */
.hero { padding: 46px 0 10px; text-align: center; }
.hero .badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 6px 16px;
    border-radius: 999px;
    background: var(--green-soft);
    color: var(--green-dark);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 14px;
}
.hero h1 { font-size: 40px; color: var(--green-dark); margin-bottom: 12px; }
.hero p { color: var(--text-soft); max-width: 640px; margin: 0 auto; }

/* ============ 布局 ============ */
.layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 24px;
    padding: 34px 0 50px;
}

/* ============ 文章卡片 ============ */
.section-title {
    font-size: 20px;
    font-weight: 800;
    color: var(--green-dark);
    margin: 4px 0 18px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.section-title::before {
    content: "";
    width: 6px; height: 22px;
    border-radius: 4px;
    background: linear-gradient(var(--green), var(--green-dark));
}

.featured { padding: 18px; margin-bottom: 24px; overflow: hidden; }
.featured .thumb {
    height: 320px;
    border-radius: 12px;
    display: grid; place-items: center;
    font-size: 90px;
    color: #fff;
    margin-bottom: 18px;
}
.cat-badge {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    background: var(--green-soft);
    color: var(--green-dark);
    margin-bottom: 12px;
}
.post-title { font-size: 26px; font-weight: 800; color: var(--text); line-height: 1.35; }
.post-title:hover { color: var(--green-dark); }
.post-meta { color: var(--text-soft); font-size: 13px; margin: 12px 0; display: flex; gap: 16px; flex-wrap: wrap; }
.post-meta span { display: inline-flex; align-items: center; gap: 5px; }
.excerpt { color: var(--text-soft); }

.grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
}
.card { padding: 14px; transition: transform .25s ease, box-shadow .25s ease; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.card .thumb {
    height: 170px;
    border-radius: 12px;
    display: grid; place-items: center;
    font-size: 60px;
    color: #fff;
    margin-bottom: 14px;
}
.card .post-title { font-size: 18px; }
.card .excerpt { font-size: 14px; margin-top: 8px; }

/* 渐变占位（浅绿系） */
.g1 { background: linear-gradient(135deg, #9fe0b0, #6cbf84); }
.g2 { background: linear-gradient(135deg, #bfe9c4, #4a9c63); }
.g3 { background: linear-gradient(135deg, #c8efd2, #7fcf9a); }
.g4 { background: linear-gradient(135deg, #a8e6cf, #56b894); }
.g5 { background: linear-gradient(135deg, #d4f0c4, #8bcf6c); }
.g6 { background: linear-gradient(135deg, #b8ecd6, #5cb88f); }

/* 搜索结果 */
.no-result {
    padding: 30px;
    text-align: center;
    color: var(--text-soft);
}
.no-result .ti { font-size: 30px; display: block; margin-bottom: 10px; color: var(--green); }

/* ============ 侧边栏 ============ */
.widget { padding: 20px; margin-bottom: 22px; }
.widget-title {
    font-size: 16px;
    font-weight: 800;
    color: var(--green-dark);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.search-form { display: flex; gap: 8px; }
.search-form input {
    flex: 1;
    min-width: 0;
    padding: 10px 14px;
    border: 1px solid rgba(108, 191, 132, 0.35);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.7);
    font-family: var(--font);
    font-size: 14px;
    outline: none;
}
.search-form input:focus { border-color: var(--green); }

.about-author { display: flex; gap: 6px; margin-bottom: 14px; }
.about-author .ava {
    width: 44px; height: 44px; border-radius: 50%;
    background: var(--green-soft); border: 2px solid #fff;
    display: grid; place-items: center; font-size: 22px;
    color: var(--green-dark);
}
.about-text { font-size: 14px; color: var(--text-soft); margin-bottom: 14px; }
.social { display: flex; gap: 10px; }
.social a {
    width: 36px; height: 36px; border-radius: 10px;
    background: var(--green-soft); border: 1px solid #fff;
    display: grid; place-items: center; font-size: 14px;
    color: var(--green-dark);
    transition: transform .2s ease;
}
.social a:hover { transform: translateY(-3px); color: #fff; background: var(--green); }

.post-sm { display: flex; gap: 12px; margin-bottom: 16px; }
.post-sm:last-child { margin-bottom: 0; }
.post-sm .sm-thumb {
    width: 76px; height: 64px; flex: none;
    border-radius: 10px; display: grid; place-items: center;
    font-size: 30px; color: #fff;
}
.post-sm h4 { font-size: 14px; font-weight: 700; line-height: 1.4; }
.post-sm h4:hover { color: var(--green-dark); }
.post-sm .meta {
    font-size: 12px; color: var(--text-soft); margin-top: 4px;
    display: inline-flex; align-items: center; gap: 5px;
}

.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud a {
    padding: 6px 14px;
    border-radius: 999px;
    background: var(--green-soft);
    color: var(--green-dark);
    font-size: 13px;
    font-weight: 600;
    transition: all .2s ease;
}
.tag-cloud a:hover { background: var(--green); color: #fff; }

.topics li { position: relative; padding: 10px 0; border-bottom: 1px dashed rgba(108,191,132,.3); }
.topics li:last-child { border-bottom: none; }
.topics a { font-weight: 600; }
.topics a:hover { color: var(--green-dark); }
.topics .count { position: absolute; right: 0; color: var(--text-soft); font-size: 13px; }

/* ============ 页脚 ============ */
footer { padding: 0 0 40px; }
.footer-inner { padding: 34px; }
.footer-widgets { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.footer-bottom {
    margin-top: 26px; padding-top: 20px;
    border-top: 1px solid rgba(108,191,132,.25);
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
    font-size: 14px; color: var(--text-soft);
}
.footer-bottom .copyright { display: inline-flex; align-items: center; gap: 7px; }
.footer-bottom a { color: var(--green-dark); font-weight: 600; }

/* ============ 响应式 ============ */
@media (max-width: 920px) {
    .layout { grid-template-columns: 1fr; }
    .footer-widgets { grid-template-columns: 1fr; }
    .menu-toggle { display: grid; }
    .nav-right .btn-primary { display: none; }
    .menu {
        display: none;
        position: absolute;
        top: 100%; left: 0; right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        padding: 14px 20px 18px;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.8);
        box-shadow: var(--shadow);
    }
    header { position: sticky; }
    .menu.open { display: flex; }
    .menu a { padding: 10px 14px; }
}
@media (max-width: 560px) {
    .grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 30px; }
    .featured .thumb { height: 200px; font-size: 64px; }
    .nav-right .icon-btn { display: none; }
}