:root{--color-deep-blue: #102B46;--color-deep-blue-dark: #0A1D30;--color-deep-blue-light: #183B5E;--color-aurora-cyan: #35C8C1;--color-aurora-cyan-dark: #22A39D;--color-aurora-cyan-soft: rgba(53, 200, 193, .14);--color-orbit-purple: #796CE0;--color-orbit-purple-dark: #5E51C7;--color-orbit-purple-soft: rgba(121, 108, 224, .14);--color-silver-white: #F7FAFD;--color-light-blue-gray: #E9F1F7;--color-surface-white: #FFFFFF;--color-text-primary: #263A51;--color-text-secondary: #6E8295;--color-border-hairline: #D5E2EE;--color-border-subtle: #E2ECF4;--font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;--max-width: 1240px;--header-height: 74px;--radius-sm: 8px;--radius-md: 14px;--radius-lg: 20px;--radius-pill: 9999px;--shadow-card: 0 10px 30px -10px rgba(16, 43, 70, .07);--shadow-hover: 0 16px 36px -10px rgba(16, 43, 70, .13);--transition-fast: .18s cubic-bezier(.16, 1, .3, 1)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-sans);color:var(--color-text-primary);background-color:var(--color-silver-white);scroll-behavior:smooth;scroll-padding-top:calc(var(--header-height) + 20px);-webkit-text-size-adjust:100%;overflow-x:hidden}body{min-height:100vh;display:flex;flex-direction:column;background-color:var(--color-silver-white);color:var(--color-text-primary);line-height:1.7;font-size:16px;overflow-x:hidden}body.modal-open{overflow:hidden}a{color:inherit;text-decoration:none;transition:color var(--transition-fast),background-color var(--transition-fast),border-color var(--transition-fast),transform var(--transition-fast)}img,svg{max-width:100%;display:block}ul,ol{list-style-position:inside}button{font-family:inherit;cursor:pointer}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}.section-block{padding:84px 0;border-bottom:1px solid var(--color-border-hairline);position:relative}.section-block--alt{background-color:var(--color-surface-white)}.section-block--tint{background-color:var(--color-light-blue-gray)}.section-block--dark{background-color:var(--color-deep-blue);color:var(--color-silver-white)}.section-header{max-width:780px;margin-bottom:44px}.section-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--color-deep-blue);background:var(--color-light-blue-gray);border:1px solid var(--color-border-hairline);padding:5px 14px;border-radius:var(--radius-pill);margin-bottom:14px}.section-eyebrow__dot{width:8px;height:8px;border-radius:50%;background:var(--color-aurora-cyan);box-shadow:0 0 0 3px #35c8c140}.section-title{font-size:clamp(1.65rem,2.6vw,2.25rem);font-weight:700;color:var(--color-deep-blue);line-height:1.3;margin-bottom:12px;letter-spacing:-.01em}.section-desc{font-size:1.02rem;color:var(--color-text-secondary);line-height:1.75}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;padding:12px 22px;border-radius:var(--radius-pill);border:1.5px solid transparent;transition:transform var(--transition-fast),box-shadow var(--transition-fast),background-color var(--transition-fast),border-color var(--transition-fast),color var(--transition-fast);white-space:nowrap;user-select:none}.btn:active{transform:scale(.97)}.btn--primary{background-color:var(--color-aurora-cyan);color:var(--color-deep-blue);box-shadow:0 6px 18px #35c8c147}.btn--primary:hover{background-color:#29b5ae;transform:translateY(-1px)}.btn--deep{background-color:var(--color-deep-blue);color:var(--color-silver-white)}.btn--deep:hover{background-color:var(--color-deep-blue-light);transform:translateY(-1px)}.btn--purple{background-color:var(--color-orbit-purple);color:#fff;box-shadow:0 6px 18px #796ce042}.btn--purple:hover{background-color:var(--color-orbit-purple-dark);transform:translateY(-1px)}.btn--outline-light{background-color:#f7fafd14;color:var(--color-silver-white);border-color:#e9f1f759}.btn--outline-light:hover{background-color:#35c8c129;border-color:var(--color-aurora-cyan);color:#fff}.btn--outline-dark{background-color:var(--color-surface-white);color:var(--color-deep-blue);border-color:var(--color-border-hairline)}.btn--outline-dark:hover{border-color:var(--color-orbit-purple);color:var(--color-orbit-purple);background-color:var(--color-silver-white)}.page-hero{background:linear-gradient(135deg,var(--color-deep-blue) 0%,#163859 100%);color:var(--color-silver-white);padding:56px 0 52px;border-bottom:1px solid rgba(53,200,193,.22);position:relative;overflow:hidden}.page-hero:after{content:"";position:absolute;right:-120px;top:-120px;width:380px;height:380px;border-radius:50%;border:1px dashed rgba(53,200,193,.25);pointer-events:none}.page-hero__tag{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;letter-spacing:.08em;color:var(--color-aurora-cyan);background:#35c8c11f;border:1px solid rgba(53,200,193,.3);padding:4px 12px;border-radius:var(--radius-pill);margin-bottom:14px}.page-hero__title{font-size:clamp(1.75rem,3vw,2.5rem);font-weight:700;color:var(--color-silver-white);line-height:1.28;margin-bottom:14px}.page-hero__desc{max-width:780px;font-size:1.02rem;color:var(--color-light-blue-gray);line-height:1.75}.disclosure-box{background-color:var(--color-light-blue-gray);border:1px solid var(--color-border-hairline);border-left:4px solid var(--color-orbit-purple);border-radius:var(--radius-md);padding:18px 22px;font-size:14px;color:var(--color-text-primary);line-height:1.7}.disclosure-box strong{color:var(--color-deep-blue)}.prose-content{color:var(--color-text-primary);font-size:1.03rem;line-height:1.85}.prose-content h2{font-size:1.42rem;color:var(--color-deep-blue);margin:36px 0 14px;padding-bottom:10px;border-bottom:1px solid var(--color-border-hairline);line-height:1.35}.prose-content h3{font-size:1.16rem;color:var(--color-deep-blue);margin:24px 0 10px;line-height:1.4}.prose-content p{margin-bottom:16px}.prose-content ul,.prose-content ol{margin:12px 0 20px 20px;list-style-position:outside}.prose-content li{margin-bottom:8px}.prose-content a{color:var(--color-orbit-purple);font-weight:600;text-decoration:underline;text-underline-offset:3px}.prose-content a:hover{color:var(--color-deep-blue)}.prose-content code{font-family:var(--font-mono);font-size:.9em;background-color:var(--color-light-blue-gray);color:var(--color-deep-blue);padding:2px 6px;border-radius:4px}:focus-visible{outline:2px solid var(--color-aurora-cyan);outline-offset:2px}@media (max-width: 768px){.container{padding:0 16px}.section-block{padding:56px 0}.section-header{margin-bottom:30px}.page-hero{padding:40px 0 36px}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}.site-header[data-astro-cid-3ef6ksr2]{position:sticky;top:0;z-index:100;background-color:#102b46f5;backdrop-filter:blur(10px);border-bottom:1px solid rgba(53,200,193,.2);color:var(--color-silver-white)}.site-header__inner[data-astro-cid-3ef6ksr2]{height:var(--header-height);display:flex;align-items:center;justify-content:space-between;gap:16px}.site-logo[data-astro-cid-3ef6ksr2]{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}.site-logo__mark[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;justify-content:center}.site-logo__text[data-astro-cid-3ef6ksr2]{display:flex;flex-direction:column;line-height:1.15}.site-logo__cn[data-astro-cid-3ef6ksr2]{font-size:1.18rem;font-weight:700;color:var(--color-silver-white);letter-spacing:.03em}.site-logo__en[data-astro-cid-3ef6ksr2]{font-size:.72rem;font-weight:500;color:var(--color-aurora-cyan);letter-spacing:.08em;text-transform:uppercase}.site-nav__list[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:6px;list-style:none}.site-nav__link[data-astro-cid-3ef6ksr2]{display:inline-flex;align-items:center;padding:8px 13px;border-radius:var(--radius-pill);font-size:.94rem;font-weight:500;color:var(--color-light-blue-gray);white-space:nowrap}.site-nav__link[data-astro-cid-3ef6ksr2]:hover,.site-nav__link[data-astro-cid-3ef6ksr2].is-active{color:#fff;background-color:#35c8c129}.site-header__actions[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:10px;flex-shrink:0}.search-trigger-btn[data-astro-cid-3ef6ksr2]{display:inline-flex;align-items:center;gap:7px;padding:8px 13px;border-radius:var(--radius-pill);background-color:#f7fafd17;border:1px solid rgba(233,241,247,.25);color:var(--color-silver-white);font-size:.88rem;transition:background-color var(--transition-fast),border-color var(--transition-fast)}.search-trigger-btn[data-astro-cid-3ef6ksr2]:hover{background-color:#35c8c12e;border-color:var(--color-aurora-cyan)}.search-trigger-btn__kbd[data-astro-cid-3ef6ksr2]{font-family:var(--font-mono);font-size:.72rem;padding:2px 6px;border-radius:4px;background:#102b46b3;border:1px solid rgba(233,241,247,.25);color:var(--color-aurora-cyan)}.site-header__cta[data-astro-cid-3ef6ksr2]{padding:9px 18px;font-size:.9rem}.mobile-menu-toggle[data-astro-cid-3ef6ksr2]{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:40px;height:40px;border-radius:var(--radius-sm);background:#f7fafd14;border:1px solid rgba(233,241,247,.25);color:var(--color-silver-white)}.mobile-menu-toggle__bar[data-astro-cid-3ef6ksr2]{width:18px;height:2px;background-color:currentColor;border-radius:2px;transition:transform var(--transition-fast),opacity var(--transition-fast)}.mobile-menu-toggle[data-astro-cid-3ef6ksr2].is-open .mobile-menu-toggle__bar[data-astro-cid-3ef6ksr2]:nth-child(1){transform:translateY(7px) rotate(45deg)}.mobile-menu-toggle[data-astro-cid-3ef6ksr2].is-open .mobile-menu-toggle__bar[data-astro-cid-3ef6ksr2]:nth-child(2){opacity:0}.mobile-menu-toggle[data-astro-cid-3ef6ksr2].is-open .mobile-menu-toggle__bar[data-astro-cid-3ef6ksr2]:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.mobile-nav-drawer[data-astro-cid-3ef6ksr2]{background-color:var(--color-deep-blue-dark);border-top:1px solid rgba(53,200,193,.2);padding:18px 0 22px}.mobile-nav-drawer__list[data-astro-cid-3ef6ksr2]{list-style:none;display:grid;gap:6px;margin-bottom:16px}.mobile-nav-drawer__link[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;justify-content:space-between;padding:11px 14px;border-radius:var(--radius-sm);background-color:#f7fafd0a;color:var(--color-silver-white);font-weight:500;font-size:.96rem}.mobile-nav-drawer__link[data-astro-cid-3ef6ksr2]:hover{background-color:#35c8c126;color:var(--color-aurora-cyan)}.mobile-nav-drawer__footer[data-astro-cid-3ef6ksr2]{display:grid;grid-template-columns:1fr 1fr;gap:10px}@media (max-width: 1024px){.site-nav[data-astro-cid-3ef6ksr2],.search-trigger-btn__kbd[data-astro-cid-3ef6ksr2]{display:none}.mobile-menu-toggle[data-astro-cid-3ef6ksr2]{display:inline-flex}}@media (max-width: 480px){.search-trigger-btn__text[data-astro-cid-3ef6ksr2]{display:none}.search-trigger-btn[data-astro-cid-3ef6ksr2]{padding:9px 10px}.site-header__cta[data-astro-cid-3ef6ksr2]{padding:8px 13px;font-size:.84rem}.mobile-nav-drawer__footer[data-astro-cid-3ef6ksr2]{grid-template-columns:1fr}}.site-footer[data-astro-cid-sz7xmlte]{margin-top:auto;background-color:var(--color-deep-blue-dark);color:var(--color-light-blue-gray);border-top:1px solid rgba(53,200,193,.25);padding:64px 0 36px}.site-footer__top[data-astro-cid-sz7xmlte]{display:grid;grid-template-columns:1.2fr 2fr;gap:48px;padding-bottom:36px;border-bottom:1px solid rgba(233,241,247,.12)}.site-footer__logo[data-astro-cid-sz7xmlte]{display:inline-flex;align-items:baseline;gap:10px;margin-bottom:14px}.site-footer__logo-cn[data-astro-cid-sz7xmlte]{font-size:1.35rem;font-weight:700;color:var(--color-silver-white)}.site-footer__logo-en[data-astro-cid-sz7xmlte]{font-size:.82rem;font-weight:600;color:var(--color-aurora-cyan);letter-spacing:.08em;text-transform:uppercase}.site-footer__tagline[data-astro-cid-sz7xmlte]{font-size:.92rem;color:#9fb3c8;line-height:1.75;max-width:390px}.site-footer__nav[data-astro-cid-sz7xmlte]{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.site-footer__nav-title[data-astro-cid-sz7xmlte]{font-size:.92rem;font-weight:600;color:var(--color-aurora-cyan);margin-bottom:14px;letter-spacing:.04em}.site-footer__nav-list[data-astro-cid-sz7xmlte]{list-style:none;display:grid;gap:9px}.site-footer__nav-list[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{font-size:.9rem;color:var(--color-light-blue-gray)}.site-footer__nav-list[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:var(--color-aurora-cyan)}.site-footer__disclosure[data-astro-cid-sz7xmlte]{margin:28px 0;padding:18px 20px;border-radius:var(--radius-md);background-color:#f7fafd0a;border:1px solid rgba(233,241,247,.12);display:grid;gap:10px}.site-footer__disclosure-text[data-astro-cid-sz7xmlte]{font-size:.82rem;color:#9fb3c8;line-height:1.68}.site-footer__disclosure-text[data-astro-cid-sz7xmlte] strong[data-astro-cid-sz7xmlte]{color:var(--color-silver-white)}.site-footer__bottom[data-astro-cid-sz7xmlte]{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;font-size:.84rem;color:#8ca2b7}.site-footer__bottom[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{color:var(--color-aurora-cyan)}.site-footer__meta-links[data-astro-cid-sz7xmlte]{display:flex;align-items:center;gap:10px}@media (max-width: 960px){.site-footer__top[data-astro-cid-sz7xmlte]{grid-template-columns:1fr;gap:32px}}@media (max-width: 640px){.site-footer[data-astro-cid-sz7xmlte]{padding:48px 0 28px}.site-footer__nav[data-astro-cid-sz7xmlte]{grid-template-columns:1fr;gap:22px}.site-footer__bottom[data-astro-cid-sz7xmlte]{flex-direction:column;align-items:flex-start}}.search-modal[hidden]{display:none!important}.search-modal{position:fixed;inset:0;z-index:999;display:flex;align-items:flex-start;justify-content:center;padding:6vh 16px 24px}.search-modal__backdrop{position:fixed;inset:0;background-color:#0a1d30b8;backdrop-filter:blur(4px)}.search-modal__dialog{position:relative;z-index:1;width:100%;max-width:720px;max-height:86vh;display:flex;flex-direction:column;background-color:var(--color-surface-white);border:1px solid var(--color-border-hairline);border-radius:var(--radius-lg);box-shadow:0 24px 60px #0a1d3059;overflow:hidden}.search-modal__header{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;background-color:var(--color-deep-blue);color:var(--color-silver-white)}.search-modal__badge{display:block;font-size:.7rem;font-weight:700;letter-spacing:.1em;color:var(--color-aurora-cyan);margin-bottom:2px}.search-modal__title{font-size:1.08rem;font-weight:700;color:var(--color-silver-white)}.search-modal__close{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:var(--radius-sm);background-color:#f7fafd1a;border:1px solid rgba(233,241,247,.25);color:var(--color-silver-white);font-size:.85rem}.search-modal__close:hover{background-color:#35c8c133;border-color:var(--color-aurora-cyan)}.search-modal__close kbd{font-family:var(--font-mono);font-size:.75rem;color:var(--color-aurora-cyan)}.search-modal__input-bar{display:flex;align-items:center;gap:10px;padding:14px 20px;border-bottom:1px solid var(--color-border-hairline);background-color:var(--color-silver-white)}.search-modal__icon{color:var(--color-deep-blue);flex-shrink:0}.search-modal__input{width:100%;border:none;background:transparent;font-size:1rem;color:var(--color-text-primary);outline:none}.search-modal__clear{padding:4px 10px;border-radius:var(--radius-sm);border:1px solid var(--color-border-hairline);background:var(--color-surface-white);color:var(--color-text-secondary);font-size:.8rem;flex-shrink:0}.search-modal__quick{padding:12px 20px;background-color:var(--color-light-blue-gray);border-bottom:1px solid var(--color-border-hairline);display:flex;align-items:flex-start;gap:10px;flex-wrap:wrap}.search-modal__quick-label{font-size:.82rem;font-weight:600;color:var(--color-deep-blue);padding-top:3px}.search-modal__quick-tags{display:flex;flex-wrap:wrap;gap:6px;flex:1}.search-quick-tag{padding:3px 10px;border-radius:var(--radius-pill);background-color:var(--color-surface-white);border:1px solid var(--color-border-hairline);color:var(--color-deep-blue);font-size:.8rem;font-weight:500;transition:background-color var(--transition-fast),border-color var(--transition-fast)}.search-quick-tag:hover{background-color:var(--color-aurora-cyan);border-color:var(--color-aurora-cyan);color:var(--color-deep-blue)}.search-modal__results{padding:18px 20px;overflow-y:auto;max-height:52vh}.search-modal__empty{text-align:center;padding:28px 16px;color:var(--color-text-secondary);font-size:.94rem}.search-results-count{font-size:.85rem;color:var(--color-text-secondary);margin-bottom:12px}.search-results-list{display:grid;gap:10px}.search-result-card{display:block;padding:14px 16px;border-radius:var(--radius-md);border:1px solid var(--color-border-hairline);background-color:var(--color-silver-white);transition:border-color var(--transition-fast),background-color var(--transition-fast)}.search-result-card:hover{border-color:var(--color-orbit-purple);background-color:#fff}.search-result-card__title{font-size:1rem;font-weight:700;color:var(--color-deep-blue);margin-bottom:6px}.search-result-card__excerpt{font-size:.88rem;color:var(--color-text-secondary);line-height:1.6;margin-bottom:6px}.search-result-card__excerpt mark{background-color:#35c8c159;color:var(--color-deep-blue);padding:0 3px;border-radius:3px}.search-result-card__url{font-family:var(--font-mono);font-size:.76rem;color:var(--color-orbit-purple)}