:root{--bg:#f3f6f4;--surface:#fff;--surface-2:#f7faf8;--surface-3:#eef3f0;--line:#e4eae6;--line-2:#eef3f0;--ink:#122017;--ink-2:#38463e;--muted:#69766e;--muted-2:#9aa8a0;--brand:#0a8f4f;--brand-600:#077a43;--brand-700:#055f34;--brand-soft:#e4f6ec;--brand-tint:#f0faf4;--gold:#c98a14;--gold-soft:#fdf3dd;--high:#0a76c2;--high-bg:#e6f1fb;--low:#e0660f;--low-bg:#fff0e4;--up:#16a34a;--up-bg:#e7f6ed;--down:#e02424;--down-bg:#fdebeb;--flat:#69766e;--warn:#a76a0c;--warn-bg:#fdf6e7;--warn-line:#f6e3bd;--grad:linear-gradient(135deg, #0a8f4f 0%, #12b06a 100%);--shadow-sm:0 1px 2px #1220170a, 0 1px 3px #1220170d;--shadow:0 8px 24px #12201712;--shadow-lg:0 18px 44px #1220171f;--r-sm:10px;--r:14px;--r-lg:20px;--r-xl:26px;--container:1240px;--content-max:760px;--sidebar-w:252px;--gap:22px;--hh:62px}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{color:var(--ink-2);background:var(--bg);-webkit-font-smoothing:antialiased;margin:0;font-family:Be Vietnam 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summary{cursor:pointer;color:var(--ink);padding:11px 0;font-weight:700;list-style:none}.faq summary::-webkit-details-marker{display:none}.faq summary:before{content:"＋";color:var(--brand);margin-right:8px;font-weight:700}.faq[open] summary:before{content:"－"}.faq p{color:var(--ink-2);margin:0 0 12px 24px;font-size:14px}.site-footer{border-top:1px solid var(--line);background:var(--surface);margin-top:46px;padding:30px 0 88px}.site-footer .foot-links{flex-wrap:wrap;gap:16px;margin-bottom:10px;display:flex}.site-footer .foot-links a{font-size:14px;font-weight:600}.site-footer p{color:var(--muted);margin:4px 0;font-size:13px}.bottom-nav{display:none}@media (max-width:640px){.bottom-nav{z-index:60;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);background:#fffffff5;grid-template-columns:repeat(4,1fr);display:grid;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -2px 14px #12201714}.bottom-nav a{color:var(--muted);flex-direction:column;align-items:center;gap:2px;padding:9px 4px;font-size:11px;font-weight:600;display:flex}.bottom-nav a .ic{display:inline-flex}.bottom-nav a.active{color:var(--brand)}}