:root{color-scheme:light;--bg:#f6f8f7;--bg-deep:#edf4f1;--surface:#fff;--surface-2:#eef4f1;--surface-3:#e4eeea;--text:#101b35;--muted:#536176;--muted-strong:#3f4d63;--border:#dbe6e1;--border-strong:#c8d7d1;--primary:#08b89d;--primary-fill:#08b89d;--primary-hover:#069f88;--primary-text:#007b68;--primary-soft:#d9f7ef;--blue:#2e70f6;--blue-soft:#dae7ff;--blue-text:#1d4fa8;--coral:#f56765;--coral-soft:#ffe0df;--coral-text:#a33230;--yellow:#ffd65a;--yellow-soft:#fff2c2;--lavender:#ddd2ff;--lavender-soft:#eee9ff;--pink:#ffd9df;--pink-soft:#fff0f2;--sky:#d9f2ff;--sky-soft:#ecf9ff;--peach:#ffe2cc;--peach-soft:#fff3e9;--sand:#f3e6c8;--sand-soft:#fbf4e4;--danger:#c33a3f;--danger-soft:#ffe8e8;--success:#087a5f;--shadow-sm:0 2px 8px #101b350f;--shadow-md:0 14px 40px #101b351a;--shadow-lg:0 28px 80px #101b3529;--radius-input:12px;--radius-card:20px;--radius-panel:24px;--radius-pill:999px;--header-height:76px;--page-width:1440px;--reading-width:74ch;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Roboto, Helvetica, Arial, sans-serif;--font-mono:"SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;--ease:cubic-bezier(.22, 1, .36, 1)}:root[data-theme=dark]{color-scheme:dark;--bg:#0b1220;--bg-deep:#0e1728;--surface:#142033;--surface-2:#1a2940;--surface-3:#22334d;--text:#edf3fc;--muted:#b7c4d7;--muted-strong:#d1dbea;--border:#263850;--border-strong:#354a64;--primary:#32d4b4;--primary-fill:#32d4b4;--primary-hover:#56e3c7;--primary-text:#6ae8cd;--primary-soft:#0e3b38;--blue:#73a4ff;--blue-soft:#172e56;--blue-text:#73a4ff;--coral:#ff8583;--coral-soft:#4b2529;--coral-text:#ff8583;--yellow:#ffdd7a;--yellow-soft:#46391a;--lavender:#b3a0ef;--lavender-soft:#2e294c;--pink:#f3a3b1;--pink-soft:#44252e;--sky:#8fd6f7;--sky-soft:#183240;--peach:#f3b787;--peach-soft:#412b1f;--sand:#d9c18f;--sand-soft:#3b3221;--danger:#ff9295;--danger-soft:#451f24;--success:#56e3c7;--shadow-sm:0 2px 8px #0003;--shadow-md:0 18px 48px #0000004d;--shadow-lg:0 36px 90px #0000006b}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{background:var(--bg);min-width:320px;color:var(--text);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;font-size:16px;line-height:1.7}body:before{content:"";z-index:-1;pointer-events:none;background:radial-gradient(circle at 12% 4%, color-mix(in srgb, var(--primary) 9%, transparent), transparent 26rem), radial-gradient(circle at 92% 22%, color-mix(in srgb, var(--lavender) 22%, transparent), transparent 30rem);position:fixed;inset:0}img,svg,canvas{max-width:100%;display:block}a{color:var(--primary-text);text-underline-offset:.18em;text-decoration-thickness:.08em}a:hover{color:var(--primary-hover)}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer}h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin-top:0}h1,h2,h3,h4{color:var(--text);letter-spacing:-.022em;text-wrap:balance;line-height:1.18}h1{font-size:clamp(2rem,1.45rem + 2.2vw,3.7rem);font-weight:800}h2{font-size:clamp(1.5rem,1.2rem + 1.2vw,2.2rem);font-weight:760}h3{font-size:clamp(1.15rem,1.02rem + .5vw,1.5rem);font-weight:720}p{text-wrap:pretty}code,pre,kbd,samp{font-family:var(--font-mono)}code{background:var(--surface-2);border-radius:6px;padding:.12em .36em;font-size:.9em}pre{border:1px solid var(--border);border-radius:var(--radius-input);background:var(--surface-2);padding:20px;line-height:1.55;overflow:auto}pre code{background:0 0;padding:0;font-size:.88rem}hr{border:0;border-top:1px solid var(--border);margin:32px 0}::selection{background:color-mix(in srgb, var(--primary) 35%, transparent)}:focus-visible{outline:3px solid color-mix(in srgb, var(--blue) 60%, transparent);outline-offset:3px}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;position:absolute!important}.skip-link{z-index:200;border-radius:var(--radius-pill);background:var(--text);color:var(--surface);transition:transform .16s var(--ease);padding:10px 16px;font-weight:700;position:fixed;top:10px;left:10px;transform:translateY(-160%)}.skip-link:focus{color:var(--surface);transform:translateY(0)}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.site-header{z-index:80;background:color-mix(in srgb, var(--surface) 90%, transparent);border-bottom:1px solid 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22px;font-size:.95rem;font-weight:700;text-decoration:none;display:inline-flex}.primary-nav a:hover{background:color-mix(in srgb, var(--surface) 70%, transparent);color:var(--text)}.primary-nav a[aria-current=page]{background:var(--primary-fill);color:#07342c;box-shadow:0 5px 14px color-mix(in srgb, var(--primary) 30%, transparent)}:root[data-theme=dark] .primary-nav a[aria-current=page]{color:#062b24}.header-search{flex:auto;max-width:400px;margin-left:auto}.header-search .search-field{background:var(--surface);min-height:46px}.header-actions{flex:none;align-items:center;gap:6px;display:flex}.language-switch{border-radius:var(--radius-pill);min-width:64px;min-height:44px;color:var(--text);justify-content:center;align-items:center;font-size:.86rem;font-weight:750;text-decoration:none;display:inline-flex}.language-switch:hover{background:var(--surface-2);color:var(--text)}.icon-button{width:44px;height:44px;color:var(--text);transition:background .16s var(--ease), transform .16s 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h2{margin:0;font-size:clamp(1.25rem,1.08rem + .65vw,1.7rem)}.section-heading a{flex:none;font-size:.9rem;font-weight:700;text-decoration:none}.breadcrumbs{color:var(--muted);margin-bottom:20px;font-size:.86rem}.breadcrumbs ol{flex-wrap:wrap;gap:7px;margin:0;padding:0;list-style:none;display:flex}.breadcrumbs li:not(:last-child):after{content:"/";color:var(--border-strong);margin-left:7px}.breadcrumbs a{color:inherit;text-decoration:none}.breadcrumbs a:hover{color:var(--primary-text)}.site-footer{border-top:1px solid var(--border);background:var(--surface)}.footer-inner{width:min(100% - 40px, var(--page-width));grid-template-columns:1.4fr 1fr 1fr;gap:34px;margin:0 auto;padding:42px 0 46px;display:grid}.footer-brand p{max-width:380px;color:var(--muted);margin:14px 0 0;font-size:.9rem}.footer-group h2{color:var(--muted);letter-spacing:.12em;text-transform:uppercase;margin:0 0 10px;font-size:.72rem;font-weight:800}.footer-group ul{gap:6px;margin:0;padding:0;list-style:none;display:grid}.footer-group a,.footer-group span{color:var(--text);font-size:.9rem;text-decoration:none}.footer-group a:hover{color:var(--primary-text)}.footer-bottom{width:min(100% - 40px, var(--page-width));border-top:1px solid var(--border);color:var(--muted);flex-wrap:wrap;justify-content:space-between;gap:12px;margin:0 auto;padding:16px 0 24px;font-size:.78rem;display:flex}.bottom-nav{display:none}.preview-banner{background:var(--yellow-soft);color:#5b4310;text-align:center;justify-content:center;align-items:center;gap:10px;min-height:38px;padding:7px 16px;font-size:.82rem;font-weight:650;display:flex}:root[data-theme=dark] .preview-banner{color:var(--yellow)}.preview-banner svg{flex:none;width:16px;height:16px}.notice{border:1px solid var(--border);border-radius:var(--radius-input);background:var(--surface-2);color:var(--muted-strong);align-items:flex-start;gap:12px;padding:16px 18px;font-size:.9rem;display:flex}.notice strong{color:var(--text)}.notice.tone-yellow{border-color:color-mix(in srgb, var(--yellow) 42%, var(--border));background:var(--yellow-soft)}.notice.tone-blue{border-color:color-mix(in srgb, var(--blue) 30%, var(--border));background:var(--blue-soft)}@media (width<=1199px){.header-inner{gap:12px}.primary-nav a{min-width:76px;padding:0 16px}.header-search{max-width:280px}.brand-text{display:none}}@media (width<=900px){.header-search{display:none}.primary-nav{margin-left:auto}}@media (width<=767px){:root{--header-height:64px}.site-header{padding:0 12px}.header-inner{height:var(--header-height)}.brand-mark{width:38px;height:38px}.primary-nav{display:none}.header-actions{gap:0;margin-left:auto}.header-actions .icon-button,.language-switch{width:44px;min-width:44px;height:44px}.page-shell{width:min(100% - 28px, var(--page-width));padding:28px 0 42px}.page-intro{margin-bottom:22px;display:block}.page-intro p{font-size:.96rem}.page-actions{margin-top:18px}.site-main{padding-bottom:calc(76px + 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svg{color:currentColor}.filter-row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.filter-chip{border-radius:var(--radius-pill);background:var(--surface-2);min-height:44px;color:var(--text);border:1px solid #0000;justify-content:center;align-items:center;gap:7px;padding:0 18px;font-size:.88rem;font-weight:700;text-decoration:none;display:inline-flex}.filter-chip svg{width:18px;height:18px}.filter-chip:hover,.filter-chip[aria-pressed=true]{color:var(--text);border-color:var(--border-strong)}.filter-chip.road[aria-pressed=true]{background:var(--blue-soft);border-color:var(--blue)}.filter-chip.trail[aria-pressed=true]{background:var(--yellow-soft);border-color:var(--yellow)}.card{border:1px solid var(--border);border-radius:var(--radius-card);background:var(--surface);box-shadow:var(--shadow-sm);position:relative}.card.pad{padding:24px}.card.hoverable{transition:transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease)}.card.hoverable:hover{border-color:var(--border-strong);box-shadow:var(--shadow-md);transform:translateY(-3px)}.card-link{color:inherit;text-decoration:none;display:block}.card-link:hover{color:inherit}.grid{gap:18px;display:grid}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.route-card{overflow:hidden}.route-card-media{background:radial-gradient(circle at 78% 20%,#ffffff4d,#0000 18%),linear-gradient(145deg,#0d5a78,#0c8f78 54%,#92d9b9);min-height:164px;padding:18px;position:relative;overflow:hidden}.route-card.trail .route-card-media{background:radial-gradient(circle at 78% 20%,#ffffff40,#0000 18%),linear-gradient(145deg,#5c4b13,#a57d18 52%,#f0ca65)}.route-card-media:before,.route-card-media:after{content:"";border:1.5px dashed #ffffff73;border-radius:46% 54% 54% 46%/40% 42% 58% 60%;position:absolute}.route-card-media:before{inset:24% 20% 20% 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solid var(--border);background:var(--surface);color:inherit;transition:border-color .16s var(--ease), background .16s var(--ease);border-radius:16px;grid-template-columns:82px minmax(0,1fr) auto;align-items:center;gap:14px;padding:12px;text-decoration:none;display:grid}.route-list-item:hover{border-color:var(--border-strong);background:var(--surface-2);color:inherit}.route-list-thumb{background:linear-gradient(135deg,#135c74,#0f8e78 60%,#9bdcb8);border-radius:12px;min-height:68px;position:relative;overflow:hidden}.route-list-thumb.trail{background:linear-gradient(135deg,#6d5616,#b08317 58%,#f4d57b)}.route-list-thumb:after{content:"";border:1.5px dashed #fff9;border-radius:55% 45% 60% 40%;position:absolute;inset:16px 14px;transform:rotate(-12deg)}.route-list-content{min-width:0}.route-list-content strong{color:var(--text);text-overflow:ellipsis;white-space:nowrap;font-size:.94rem;font-weight:750;line-height:1.3;display:block;overflow:hidden}.route-list-content span{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;margin-top:3px;font-size:.76rem;display:block;overflow:hidden}.route-list-arrow{color:var(--muted);font-weight:800}.topic-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.topic-tile{border-radius:var(--radius-card);min-height:102px;color:var(--text);transition:transform .2s var(--ease), box-shadow .2s var(--ease);border:1px solid #0000;align-items:center;gap:14px;padding:18px;text-decoration:none;display:flex}.topic-tile:hover{color:var(--text);box-shadow:var(--shadow-md);transform:translateY(-2px)}.topic-tile .topic-icon{width:46px;height:46px;color:var(--text);background:#ffffff94;border-radius:15px;flex:none;place-items:center;display:grid}.topic-tile .topic-icon svg{width:24px;height:24px}.topic-tile h3{margin:0 0 2px;font-size:1rem}.topic-tile 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summary{cursor:pointer;justify-content:space-between;align-items:center;min-height:50px;padding:0 18px;font-size:.84rem;font-weight:750;list-style:none;display:flex}.toc-mobile summary::-webkit-details-marker{display:none}.toc-mobile ol{gap:7px;margin:0;padding:0 18px 18px;list-style:none;display:grid}.toc-mobile a{color:var(--muted-strong);font-size:.8rem;text-decoration:none}.route-detail-layout{grid-template-columns:1fr}.route-map-card{min-height:380px}.route-footer-grid{grid-template-columns:1fr;gap:24px}}@media (width<=767px){.prose{font-size:.98rem;line-height:1.75}.prose h2{font-size:1.35rem}.article-header h1{font-size:2rem}.article-summary{font-size:.98rem}.route-map-card{border-radius:var(--radius-card);min-height:300px}.route-info-card{padding:20px}.route-footer-grid{margin-top:36px}.related-row,.glossary-list{grid-template-columns:1fr}.path-step-list li{grid-template-columns:32px minmax(0,1fr);padding:15px}.path-step-list li:before{width:32px;height:32px}}