/* ============================================================
   Nova Hub · 个人导航页
   风格参考 Apple：简洁 · 高级 · 优美动效
   v3.2 移动端专项优化 + 依次显现动效增强
   ============================================================ */

/* ---------- 令牌：深色（默认） ---------- */
:root, [data-theme="dark"] {
    --bg:        #0a0a0d;
    --bg-2:      #101014;
    --text:      #f5f5f7;
    --text-dim:  #a1a1a6;
    --muted:     #6e6e73;

    --glass:          rgba(255, 255, 255, 0.05);
    --glass-strong:   rgba(28, 28, 34, 0.72);
    --glass-border:   rgba(255, 255, 255, 0.10);
    --glass-hi:       rgba(255, 255, 255, 0.12);
    --glass-shadow:   0 20px 60px -28px rgba(0,0,0,.8);
    --hairline:       rgba(255, 255, 255, 0.08);

    --accent:    #7d7bff;
    --accent-2:  #5b5ae6;
    --accent-3:  #a5a4ff;
    --accent-ink:#ffffff;
    --accent-soft: rgba(125, 123, 255, 0.12);

    --grad: linear-gradient(115deg, var(--accent-2) 0%, var(--accent) 55%, var(--accent-3) 120%);

    --font-d: 'Space Grotesk', 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', -apple-system, sans-serif;
    --font-b: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', sans-serif;
    --font-m: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
    --maxw: 1120px;
    --ease: cubic-bezier(.25, .8, .4, 1);
    --ease-out: cubic-bezier(.22, .8, .3, 1);
    color-scheme: dark;
}

/* ---------- 令牌：浅色 ---------- */
[data-theme="light"] {
    --bg:        #fbfbfd;
    --bg-2:      #f2f2f7;
    --text:      #1d1d1f;
    --text-dim:  #6e6e73;
    --muted:     #8e8e93;

    --glass:          rgba(255, 255, 255, 0.72);
    --glass-strong:   rgba(255, 255, 255, 0.85);
    --glass-border:   rgba(0, 0, 0, 0.06);
    --glass-hi:       rgba(255, 255, 255, 0.9);
    --glass-shadow:   0 20px 60px -30px rgba(30, 30, 60, 0.25);
    --hairline:       rgba(0, 0, 0, 0.06);

    --accent:    #5b5ae6;
    --accent-2:  #4946d6;
    --accent-3:  #8b89f5;
    --accent-ink:#ffffff;
    --accent-soft: rgba(91, 90, 230, 0.10);

    --grad: linear-gradient(115deg, var(--accent-2) 0%, var(--accent) 55%, var(--accent-3) 120%);
    color-scheme: light;
}

/* ---------- 预设配色 ---------- */
[data-accent="cyan"]   { --accent:#22c3ee; --accent-2:#0ea5e9; --accent-3:#7dd3fc; --accent-soft:rgba(34,195,238,.12); }
[data-accent="pink"]   { --accent:#ec4899; --accent-2:#db2777; --accent-3:#f0abfc; --accent-soft:rgba(236,72,153,.12); }
[data-accent="mint"]   { --accent:#2dd4bf; --accent-2:#14b8a6; --accent-3:#6ee7b7; --accent-soft:rgba(45,212,191,.12); }
[data-accent="orange"] { --accent:#f59e0b; --accent-2:#ea8a05; --accent-3:#fcd34d; --accent-soft:rgba(245,158,11,.12); }
[data-accent="rose"]   { --accent:#f43f5e; --accent-2:#e11d48; --accent-3:#fb7185; --accent-soft:rgba(244,63,94,.12); }

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: hidden; overflow-x: clip; }
body {
    font-family: var(--font-b);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    overflow-x: clip;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    transition: background .5s var(--ease), color .5s var(--ease);
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; -webkit-tap-highlight-color: transparent; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; color: inherit; -webkit-tap-highlight-color: transparent; }
ul { list-style: none; }
::selection { background: var(--accent-soft); color: var(--text); }
section { scroll-margin-top: 30px; }

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--hairline); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

/* ---------- 字体 ---------- */
@font-face { font-family:'Space Grotesk'; src:url('../fonts/space-grotesk-400.woff2') format('woff2'); font-weight:400; font-display:swap; }
@font-face { font-family:'Space Grotesk'; src:url('../fonts/space-grotesk-500.woff2') format('woff2'); font-weight:500; font-display:swap; }
@font-face { font-family:'Space Grotesk'; src:url('../fonts/space-grotesk-600.woff2') format('woff2'); font-weight:600; font-display:swap; }
@font-face { font-family:'Space Grotesk'; src:url('../fonts/space-grotesk-700.woff2') format('woff2'); font-weight:700; font-display:swap; }
@font-face { font-family:'JetBrains Mono'; src:url('../fonts/jetbrains-mono-400.woff2') format('woff2'); font-weight:400; font-display:swap; }

/* ---------- 背景：单层克制的渐变 ---------- */
.bg {
    position: fixed; inset: 0; z-index: -1; pointer-events: none;
    background:
        radial-gradient(90% 60% at 50% 0%, var(--accent-soft), transparent 62%);
    transition: background .5s;
}

/* ============================================================
   玻璃
   ============================================================ */
.glass {
    background: var(--glass);
    -webkit-backdrop-filter: blur(24px) saturate(160%);
            backdrop-filter: blur(24px) saturate(160%);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow), inset 0 1px 0 var(--glass-hi);
}

/* ============================================================
   顶部浮动控件
   ============================================================ */
.controls {
    position: fixed; top: 20px; right: 20px; z-index: 200;
    display: flex; align-items: center; gap: 8px;
}
.ctrl { position: relative; }
.ctrl-btn {
    width: 40px; height: 40px; display: grid; place-items: center;
    border-radius: 999px; color: var(--text-dim);
    background: var(--glass);
    -webkit-backdrop-filter: blur(20px) saturate(160%); backdrop-filter: blur(20px) saturate(160%);
    border: 1px solid var(--glass-border);
    transition: color .3s var(--ease), transform .3s var(--ease-out);
}
.ctrl-btn:hover { color: var(--text); transform: translateY(-1px); }
.ctrl-btn:active { transform: scale(.94); }
.ctrl-btn svg { display: block; }

.ic-theme[data-mode="light"] { display: none; }
[data-theme="light"] .ic-theme[data-mode="dark"] { display: none; }
[data-theme="light"] .ic-theme[data-mode="light"] { display: block; }

.ctrl-pop {
    position: absolute; top: calc(100% + 12px); right: 0; min-width: 172px;
    padding: 8px; border-radius: 20px;
    background: var(--glass-strong);
    -webkit-backdrop-filter: blur(30px) saturate(180%); backdrop-filter: blur(30px) saturate(180%);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    opacity: 0; visibility: hidden; transform: translateY(8px) scale(.98);
    transform-origin: top right;
    transition: opacity .3s var(--ease), transform .3s var(--ease), visibility .3s;
}
.ctrl.is-open .ctrl-pop { opacity: 1; visibility: visible; transform: none; }
.pop-item {
    display: flex; align-items: center; justify-content: space-between;
    padding: 9px 12px; border-radius: 12px; font-size: 13.5px; color: var(--text-dim);
    transition: background .25s, color .25s;
}
.pop-item:hover { background: var(--accent-soft); color: var(--text); }
.pop-item.is-active { color: var(--accent); font-weight: 600; }
.pop-item.is-active::after { content: "✓"; color: var(--accent); font-size: 12px; }

.palette-pop { width: 232px; }
.pop-label { display: block; font-family: var(--font-m); font-size: 10.5px; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); padding: 6px 6px 8px; }
.swatches { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; padding: 0 6px 10px; }
.swatch {
    width: 24px; height: 24px; border-radius: 999px; margin: auto;
    background: var(--sw); border: 2px solid transparent;
    transition: transform .25s var(--ease-out), border-color .25s;
}
.swatch:hover { transform: scale(1.12); }
.swatch.is-active { border-color: var(--text); }
.pop-row { display: flex; align-items: center; justify-content: space-between; padding: 4px 6px 6px; border-top: 1px solid var(--hairline); margin-top: 4px; }
.pop-row .pop-label { padding: 8px 0 0; }
#customColor { width: 28px; height: 28px; border: none; border-radius: 999px; background: transparent; cursor: pointer; padding: 0; }
#customColor::-webkit-color-swatch-wrapper { padding: 2px; }
#customColor::-webkit-color-swatch { border-radius: 999px; border: 1px solid var(--hairline); }
.pop-reset { width: 100%; margin-top: 4px; padding: 8px; border-radius: 12px; font-size: 12.5px; color: var(--text-dim); border: 1px solid var(--hairline); transition: all .3s; }
.pop-reset:hover { color: var(--text); border-color: var(--glass-border); background: var(--accent-soft); }

/* ============================================================
   按钮（Apple 风格）
   ============================================================ */
.btn {
    position: relative; display: inline-flex; align-items: center; gap: 9px;
    padding: 13px 28px; border-radius: 980px;
    font-family: var(--font-d); font-weight: 500; font-size: 15px;
    letter-spacing: .01em; white-space: nowrap;
    transition: transform .3s var(--ease-out), background .3s, border-color .3s, box-shadow .3s;
}
.btn svg { transition: transform .3s var(--ease-out); }
.btn:hover svg { transform: translateX(3px); }
.btn:active { transform: scale(.97); }
.btn-primary {
    color: var(--accent-ink);
    background: var(--accent);
    box-shadow: 0 8px 24px -10px color-mix(in srgb, var(--accent) 55%, transparent);
}
.btn-primary:hover { transform: translateY(-1px); background: var(--accent-2); }
.btn-ghost {
    color: var(--text);
    border: 1px solid var(--glass-border);
    background: var(--glass);
    -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
}
.btn-ghost:hover { border-color: var(--glass-border); background: var(--glass-strong); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
    min-height: 100vh;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    text-align: center;
    padding: 120px 24px 100px;
    position: relative;
}
.hero-eyebrow {
    display: inline-flex; align-items: center; gap: 9px;
    font-family: var(--font-m); font-size: 11.5px; letter-spacing: .22em; text-transform: uppercase;
    color: var(--muted); margin-bottom: 26px;
}
.hero-eyebrow .dot-pulse { width: 6px; height: 6px; background: var(--accent); }
.dot-pulse { border-radius: 50%; box-shadow: 0 0 0 0 var(--accent); animation: dotPulse 2.4s infinite; }
@keyframes dotPulse { 0% { box-shadow: 0 0 0 0 var(--accent);} 70% { box-shadow: 0 0 0 8px transparent;} 100% { box-shadow: 0 0 0 0 transparent;} }

.hero-title {
    font-family: var(--font-d); font-weight: 700;
    font-size: clamp(40px, 7vw, 80px); line-height: 1.08; letter-spacing: -.02em;
}
.hero-t1, .hero-t2 { display: block; }
.hero-t2 { margin-top: 6px; }
.grad-text {
    background: var(--grad);
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-sub {
    max-width: 560px; margin-top: 24px;
    font-size: 17px; color: var(--text-dim); line-height: 1.85;
}
.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 36px; }

.hero-scroll {
    position: absolute; bottom: 76px; left: 50%; transform: translateX(-50%);
    display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.scroll-text { font-family: var(--font-m); font-size: 10px; letter-spacing: .24em; color: var(--muted); text-transform: uppercase; }
.scroll-line { width: 1px; height: 34px; background: var(--hairline); position: relative; overflow: hidden; }
.scroll-line span { position: absolute; top: -50%; left: 0; width: 100%; height: 50%; background: var(--text-dim); animation: scrollDrop 2s var(--ease) infinite; }
@keyframes scrollDrop { 0% { top: -50%;} 100% { top: 110%;} }

/* ============================================================
   区块
   ============================================================ */
.section { padding: 92px 0; position: relative; }
.section-head { margin-bottom: 50px; }
.section-head.center { text-align: center; }
.section-eyebrow {
    display: inline-block; font-family: var(--font-m); font-size: 12px; letter-spacing: .26em;
    color: var(--muted); text-transform: uppercase; margin-bottom: 14px;
}
.section-eyebrow::before { content: "// "; color: var(--accent-2); }
.section-title { font-family: var(--font-d); font-weight: 700; font-size: clamp(30px, 4vw, 44px); line-height: 1.15; letter-spacing: -.01em; }
.section-sub { margin-top: 12px; color: var(--text-dim); font-size: 15.5px; }
.center-sub { margin-left: auto; margin-right: auto; }

/* ============================================================
   项目卡片
   ============================================================ */
.project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.project-card {
    display: flex; flex-direction: column;
    padding: 30px; border-radius: 26px;
    transition: transform .45s var(--ease-out), border-color .45s, box-shadow .45s;
}
.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--glass-border);
    box-shadow: var(--glass-shadow), 0 0 0 1px color-mix(in srgb, var(--accent) 18%, transparent);
}
.project-card:active { transform: scale(.985); }
.project-icon {
    display: grid; place-items: center; width: 58px; height: 58px; border-radius: 18px;
    margin-bottom: 22px; color: var(--accent);
    background: var(--accent-soft);
    transition: transform .4s var(--ease-out);
}
.project-card:hover .project-icon { transform: translateY(-3px); }
.project-body { display: flex; flex-direction: column; flex: 1; }
.project-name { font-family: var(--font-d); font-weight: 600; font-size: 20px; letter-spacing: -.01em; }
.project-desc { margin-top: 8px; color: var(--text-dim); font-size: 14px; line-height: 1.75; }
.project-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 16px; }
.project-tags i {
    padding: 4px 11px; border-radius: 999px; font-size: 11.5px; font-style: normal;
    color: var(--text-dim); background: var(--glass); border: 1px solid var(--hairline);
}
.project-foot {
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--hairline);
}
.project-url { font-family: var(--font-m); font-size: 11.5px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.project-go { display: inline-flex; align-items: center; gap: 6px; flex: none; font-family: var(--font-d); font-weight: 500; font-size: 13px; color: var(--text-dim); transition: color .3s, gap .3s var(--ease); }
.project-go svg { transition: transform .3s var(--ease); }
.project-card:hover .project-go { color: var(--accent); gap: 9px; }
.project-card:hover .project-go svg { transform: translate(2px,-2px); }

/* ============================================================
   关于
   ============================================================ */
.about-card { max-width: 880px; margin: 0 auto; padding: 48px 52px; border-radius: 32px; }
.about-p { color: var(--text-dim); font-size: 15.5px; line-height: 1.95; margin-bottom: 16px; }
.about-p:last-of-type { margin-bottom: 34px; }
.about-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.about-stat {
    padding: 20px 12px; border-radius: 20px; text-align: center;
    background: var(--glass); border: 1px solid var(--hairline);
}
.about-stat-num { display: block; font-family: var(--font-d); font-weight: 600; font-size: 30px; color: var(--text); letter-spacing: -.01em; }
.about-stat-label { display: block; margin-top: 4px; color: var(--muted); font-size: 12.5px; }

/* 联系方式 */
.about-contact { margin-top: 44px; }
.about-contact-head { text-align: center; margin-bottom: 22px; }
.about-contact-title { display: block; font-family: var(--font-d); font-weight: 600; font-size: 20px; }
.about-contact-sub { display: block; margin-top: 4px; color: var(--muted); font-size: 13.5px; }
.about-contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; max-width: 720px; margin: 0 auto; }
.contact-card {
    display: flex; align-items: center; gap: 16px;
    padding: 20px; border-radius: 24px;
    transition: transform .4s var(--ease-out), border-color .4s;
}
.contact-card:hover { transform: translateY(-4px); border-color: var(--glass-border); }
.contact-icon {
    flex: none; display: grid; place-items: center;
    width: 48px; height: 48px; border-radius: 15px; color: var(--accent); background: var(--accent-soft);
}
.contact-card-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.contact-name { font-family: var(--font-d); font-weight: 600; font-size: 15px; }
.contact-num {
    display: flex; align-items: center; gap: 8px; margin-top: 3px;
    font-family: var(--font-m); font-size: 12.5px; color: var(--text-dim);
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.copy-btn { flex: none; width: 28px; height: 28px; display: grid; place-items: center; border-radius: 999px; color: var(--muted); transition: all .3s; }
.copy-btn:hover { color: var(--accent); background: var(--accent-soft); }
.copy-btn.is-copied { color: var(--accent); }
.contact-reply { text-align: center; margin-top: 26px; color: var(--muted); font-size: 13px; display: flex; align-items: center; justify-content: center; gap: 9px; }

/* 赞赏入口 */
.about-donate { text-align: center; margin-top: 22px; }
.btn-donate {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 11px 24px; border-radius: 980px;
    font-family: var(--font-d); font-weight: 500; font-size: 14px;
    color: var(--text-dim); border: 1px solid var(--hairline); background: transparent;
    transition: color .3s, border-color .3s, transform .3s var(--ease-out);
}
.btn-donate:hover { color: var(--accent); border-color: var(--glass-border); transform: translateY(-1px); }
.btn-donate .heart { color: var(--accent); }

/* ============================================================
   页脚
   ============================================================ */
.footer { padding: 56px 0 120px; text-align: center; color: var(--muted); font-size: 13px; }
.footer-links { display: flex; align-items: center; justify-content: center; gap: 18px; margin-bottom: 12px; }
.footer-links a { color: var(--text-dim); transition: color .3s; }
.footer-links a:hover { color: var(--accent); }
.footer-made { margin-top: 6px; font-family: var(--font-m); font-size: 11.5px; letter-spacing: .05em; }

/* ============================================================
   赞赏页
   ============================================================ */
.donate-hero {
    min-height: 72vh;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    text-align: center; padding: 120px 24px 40px;
}
.donate-title {
    font-family: var(--font-d); font-weight: 700;
    font-size: clamp(34px, 6vw, 64px); line-height: 1.1; letter-spacing: -.02em;
    margin-top: 4px;
}
.donate-sub { max-width: 520px; margin-top: 18px; font-size: 16px; color: var(--text-dim); line-height: 1.85; }
.donate-body { padding: 0 24px 40px; }
.donate-grid {
    display: grid; grid-template-columns: repeat(2, 240px); justify-content: center; gap: 24px;
    max-width: 600px; margin: 0 auto;
}
.qr-card { padding: 26px; border-radius: 28px; text-align: center; }
.qr-card-name { margin-top: 16px; font-family: var(--font-d); font-weight: 600; font-size: 15px; }
.qr-frame {
    display: grid; place-items: center; width: 150px; height: 150px; margin: 0 auto;
    border-radius: 20px; background: #fff; overflow: hidden;
}
.qr-frame img { width: 100%; height: 100%; object-fit: contain; }
.qr-frame .qr-empty { display: grid; place-items: center; width: 100%; height: 100%; color: #a1a1a6; }
.qr-empty svg { margin-bottom: 6px; }
.qr-empty span { font-size: 11px; letter-spacing: .05em; }
.donate-note { margin: 36px auto 0; max-width: 520px; text-align: center; color: var(--muted); font-size: 13.5px; line-height: 1.9; }
.back-btn {
    display: inline-flex; align-items: center; gap: 8px; margin-top: 30px;
    padding: 12px 26px; border-radius: 980px; font-family: var(--font-d); font-weight: 500; font-size: 14.5px;
    color: var(--text); border: 1px solid var(--glass-border); background: var(--glass);
    transition: transform .3s var(--ease-out), border-color .3s;
}
.back-btn:hover { transform: translateY(-2px); border-color: var(--glass-border); }
.donate-nav {
    position: fixed; top: 20px; left: 20px; z-index: 200;
    display: inline-flex; align-items: center; gap: 7px;
    padding: 10px 18px; border-radius: 999px; font-family: var(--font-d); font-size: 13.5px; color: var(--text-dim);
    background: var(--glass);
    -webkit-backdrop-filter: blur(20px) saturate(160%); backdrop-filter: blur(20px) saturate(160%);
    border: 1px solid var(--glass-border);
    transition: color .3s, transform .3s var(--ease-out);
}
.donate-nav:hover { color: var(--text); transform: translateX(-2px); }

/* ============================================================
   Apple Dock
   ============================================================ */
.dock-wrap {
    position: fixed; left: 50%; bottom: 18px; transform: translateX(-50%); z-index: 300;
    padding: 6px 12px;
}
.dock {
    display: flex; align-items: flex-end; gap: 8px;
    padding: 9px 12px; border-radius: 26px;
    background: var(--glass-strong);
    -webkit-backdrop-filter: blur(30px) saturate(180%); backdrop-filter: blur(30px) saturate(180%);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow), inset 0 1px 0 var(--glass-hi);
}
.dock-sep { width: 1px; height: 26px; margin: 6px 3px; background: var(--hairline); border-radius: 2px; }
.dock-item {
    position: relative; display: grid; place-items: center;
    width: 46px; height: 46px; border-radius: 15px;
    color: var(--text-dim);
    background: var(--accent-soft);
    border: 1px solid var(--glass-border);
    --s: 1;
    transform: translateY(calc((var(--s) - 1) * -16px)) scale(var(--s));
    transform-origin: bottom center;
    transition: color .25s, border-color .25s;
    will-change: transform;
}
.dock-item:hover { color: var(--accent); }
.dock-item:active { color: var(--accent); }
.dock-item svg { display: block; }
.dock-item::after {
    content: attr(data-label);
    position: absolute; bottom: calc(100% + 12px); left: 50%; transform: translateX(-50%) translateY(6px);
    padding: 5px 12px; border-radius: 9px; white-space: nowrap;
    font-size: 12px; font-family: var(--font-d);
    color: var(--text); background: var(--glass-strong);
    border: 1px solid var(--glass-border);
    -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
    opacity: 0; visibility: hidden;
    transition: opacity .25s, transform .25s, visibility .25s;
    pointer-events: none;
}
.dock-item:hover::after { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }

/* ============================================================
   滚动显现（依次淡入上移）
   ============================================================ */
.reveal {
    opacity: 0; transform: translateY(30px) scale(.99);
    transition: opacity .85s var(--ease-out), transform .85s var(--ease-out);
    transition-delay: calc(var(--d, 0) * 1ms);
    will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: none; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
    .project-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .container { padding: 0 20px; }
    .section { padding: 70px 0; }
    .section-head { margin-bottom: 38px; }
    .hero { padding: 96px 20px 92px; min-height: 100svh; }
    .hero-eyebrow { margin-bottom: 20px; font-size: 10.5px; }
    .hero-sub { margin-top: 18px; font-size: 15.5px; line-height: 1.8; }
    .hero-actions { margin-top: 30px; gap: 12px; }
    .hero-scroll { bottom: 88px; }
    .about-card { padding: 32px 22px; border-radius: 26px; }
    .about-stats { grid-template-columns: repeat(2, 1fr); }
    .about-contact-grid { grid-template-columns: 1fr; }
    .controls { top: 14px; right: 14px; gap: 6px; }
    .ctrl-btn { width: 36px; height: 36px; }
    .footer { padding: 48px 0 118px; }
    body { padding-bottom: 62px; }
    .donate-hero { min-height: 66vh; padding: 104px 20px 32px; }
    .donate-grid { grid-template-columns: 1fr; max-width: 320px; gap: 20px; }
    .qr-frame { width: 150px; height: 150px; }
    .donate-nav { top: 14px; left: 14px; }
}
/* ---------- 移动端 Dock 重排：杜绝溢出、避免整页缩放 ---------- */
@media (max-width: 560px) {
    .dock-wrap {
        left: 10px; right: 10px; transform: none;
        width: auto; padding: 0;
        display: flex; justify-content: center;
    }
    .dock { gap: 4px; padding: 7px 8px; border-radius: 20px; max-width: 100%; }
    .dock-item { width: 36px; height: 36px; border-radius: 12px; }
    .dock-sep { display: none; }
    .project-grid { grid-template-columns: 1fr; }
    .project-card { padding: 24px; border-radius: 22px; }
    .project-icon { width: 52px; height: 52px; border-radius: 16px; margin-bottom: 18px; }
    .hero-actions .btn { flex: 1 1 100%; justify-content: center; }
    .contact-card { flex-wrap: wrap; align-items: flex-start; gap: 12px; padding: 18px; border-radius: 20px; }
    .contact-card .btn { flex: 1 1 100%; justify-content: center; margin-top: 4px; }
    .contact-num { font-size: 12px; }
    .about-stat { padding: 16px 8px; }
    .about-stat-num { font-size: 26px; }
}
/* ---------- 超小屏兜底 ---------- */
@media (max-width: 360px) {
    .dock { gap: 3px; padding: 6px 6px; }
    .dock-item { width: 33px; height: 33px; border-radius: 10px; }
    .hero-title { font-size: 36px; }
    .container { padding: 0 16px; }
}

/* ============================================================
   无障碍：减少动效
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .001s !important; animation-iteration-count: 1 !important; transition-duration: .001s !important; }
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; }
}