.field-guide{--fg-paper:#f5f2eb;--fg-ink:#233c32;--fg-muted:#626c60;--fg-sand:#b39a74;--fg-line:#233c3228;max-width:1440px;margin:0 auto;padding:clamp(76px,8vw,124px) clamp(24px,6vw,92px);color:var(--fg-ink);font-family:var(--font-functional,'Inter',Arial,sans-serif);font-size:14px;line-height:1.7;scroll-margin-top:92px;background:var(--fg-paper)}
.field-guide *{box-sizing:border-box}
.field-guide button,.field-guide textarea{font:inherit}
.field-guide button,.field-guide a,.field-guide summary{-webkit-tap-highlight-color:transparent}
.field-guide button{cursor:pointer}
.field-guide button:disabled{cursor:default}
.field-guide a{color:inherit;text-decoration:none}
.field-guide a:hover{text-decoration:underline;text-underline-offset:5px}
.field-guide :is(button,a,summary,textarea):focus-visible{outline:2px solid var(--fg-ink);outline-offset:5px;border-radius:1px}
.field-guide [hidden]{display:none!important}
.fg-heading{display:grid;grid-template-columns:1.2fr .7fr;gap:clamp(32px,8vw,124px);align-items:end;margin-bottom:48px}
.field-guide .fg-eyebrow{font-size:10px;font-weight:500;letter-spacing:.19em;line-height:1.5;margin:0 0 18px;text-transform:uppercase}
.field-guide .fg-heading h2{font-family:var(--font-editorial,'Fraunces',Georgia,serif);font-weight:350;font-size:clamp(37px,4.15vw,63px);line-height:1.08;letter-spacing:-.045em;margin:0;text-wrap:balance}
.fg-heading h2 em{font-weight:350}
.field-guide .fg-heading-copy{font-size:14px;line-height:1.9;max-width:380px;margin:0 0 3px;color:var(--fg-muted)}
.fg-route-switch{display:flex;border-bottom:1px solid var(--fg-line);gap:32px}
.field-guide .fg-route-switch button{border:0;border-bottom:2px solid transparent;background:transparent;color:var(--fg-muted);margin-bottom:-1px;padding:17px 0;display:flex;gap:12px;align-items:center;line-height:1.5;font-size:15px;transition:color .25s ease,border-color .25s ease}
.field-guide .fg-route-switch button[aria-pressed=true]{color:var(--fg-ink);border-bottom-color:var(--fg-ink)}
.field-guide .fg-route-switch button:hover{color:var(--fg-ink)}
.fg-route-index{font-size:10px;font-variant-numeric:tabular-nums;letter-spacing:.06em;opacity:.6}
.fg-route-days{font-size:11px;border:1px solid var(--fg-line);padding:2px 8px;border-radius:2px;white-space:nowrap}
.fg-main{display:grid;grid-template-columns:1fr .85fr;gap:clamp(36px,7vw,108px);padding-top:42px}
.fg-route-panel{min-width:0}
.field-guide .fg-route-intro .fg-eyebrow{margin-bottom:11px;color:var(--fg-muted);letter-spacing:.12em}
.field-guide .fg-route-intro h3,.field-guide .fg-season-content h3{font-family:var(--font-editorial,'Fraunces',Georgia,serif);font-weight:350;letter-spacing:-.035em;font-size:clamp(28px,2.6vw,39px);line-height:1.15;margin:0 0 15px;text-wrap:balance}
.field-guide .fg-route-description{max-width:520px;color:var(--fg-muted);font-size:13px;line-height:1.9;margin:0}
.fg-route-meta{display:flex;gap:14px;align-items:center;font-size:11px;margin-top:18px;letter-spacing:.035em}
.fg-route-meta>span[aria-hidden]{color:var(--fg-sand)}
.field-guide .fg-timeline{list-style:none;display:grid;gap:0;padding:0;margin:34px 0 0}
.fg-timeline li{position:relative;display:grid;grid-template-columns:31px 1fr;gap:17px;padding:0 0 23px}
.fg-timeline li:last-child{padding-bottom:0}
.fg-timeline li:not(:last-child):before{content:"";position:absolute;top:31px;bottom:0;left:15px;width:1px;background:var(--fg-line)}
.fg-stop-dot{width:31px;height:31px;border:1px solid var(--fg-line);border-radius:50%;display:grid;place-items:center;font-size:10px;line-height:1;font-variant-numeric:tabular-nums;color:var(--fg-muted);background:var(--fg-paper)}
.fg-day{display:block;font-size:9px;line-height:1.4;letter-spacing:.13em;color:var(--fg-muted);margin:0 0 4px}
.field-guide .fg-timeline h4{font:500 15px/1.45 var(--font-functional,'Inter',Arial,sans-serif);margin:0 0 5px;color:var(--fg-ink)}
.field-guide .fg-timeline p{font-size:12px;line-height:1.85;margin:0;color:var(--fg-muted);max-width:480px}
.field-guide .fg-small{font-size:10px;line-height:1.8;color:var(--fg-muted)}
.field-guide .fg-route-note{margin:26px 0 0;padding-left:48px;max-width:540px}
.fg-season-panel{min-width:0;align-self:start;border:1px solid var(--fg-line);padding:30px 28px 0;background:#ede9df42}
.field-guide .fg-month-label{letter-spacing:.12em;margin-bottom:17px}
.fg-months{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:6px;padding-bottom:25px;border-bottom:1px solid var(--fg-line)}
.field-guide .fg-months button{border:1px solid transparent;background:transparent;color:var(--fg-muted);font-size:11px;line-height:1.4;min-width:0;min-height:40px;padding:9px 4px;border-radius:1px;transition:color .25s ease,background-color .25s ease,border-color .25s ease}
.field-guide .fg-months button:hover{border-color:var(--fg-line);color:var(--fg-ink)}
.field-guide .fg-months button[aria-pressed=true]{color:var(--fg-paper);background:var(--fg-ink);border-color:var(--fg-ink)}
.fg-season-content{padding-top:26px;min-height:329px}
.fg-season-top{display:flex;align-items:center;gap:10px;line-height:1.5;margin-bottom:20px;flex-wrap:wrap}
.fg-month-name{font-size:11px;font-weight:500;letter-spacing:.045em}
.fg-season-line{width:24px;height:1px;background:var(--fg-sand)}
.fg-season-tone{font-size:10px;color:var(--fg-muted)}
.field-guide .fg-season-content h3{font-size:clamp(28px,2.5vw,36px);margin-bottom:18px;max-width:380px}
.field-guide .fg-season-copy{font-size:12px;color:var(--fg-muted);line-height:1.95;max-width:420px;margin:0}
.fg-pack{display:grid;grid-template-columns:26px 1fr;gap:13px;border-top:1px solid var(--fg-line);padding-top:21px;margin-top:24px}
.fg-pack-icon svg{width:26px;height:26px;stroke:var(--fg-sand);stroke-width:1.2;stroke-linecap:round;stroke-linejoin:round}
.field-guide .fg-pack .fg-eyebrow{font-size:8px;letter-spacing:.14em;margin:0 0 5px;display:block}
.field-guide .fg-pack p{font-size:11px;line-height:1.8;margin:0;color:var(--fg-muted)}
.field-guide .fg-season-note{margin:22px 0 26px;font-size:9px}
.field-guide .fg-calendar-link{display:flex;justify-content:space-between;gap:20px;align-items:center;font-size:11px;padding:20px 0;border-top:1px solid var(--fg-line);line-height:1.7}
.fg-calendar-link>span:last-child{font-size:17px}
.fg-practical{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;margin-top:45px;border-top:1px solid var(--fg-line);border-bottom:1px solid var(--fg-line);align-items:start}
.fg-detail{min-width:0}
.field-guide .fg-detail summary{cursor:pointer;list-style:none;display:flex;align-items:center;gap:12px;min-height:76px;font-size:12px;font-weight:500;line-height:1.5;margin:0}
.fg-detail summary::-webkit-details-marker{display:none}
.fg-detail-number{font-size:9px;font-weight:400;color:var(--fg-muted);letter-spacing:.05em}
.fg-detail-plus{width:12px;height:12px;flex:0 0 12px;position:relative;margin-left:auto}
.fg-detail-plus:before,.fg-detail-plus:after{content:"";position:absolute;top:5px;left:0;width:11px;height:1px;background:currentColor;transition:transform .2s ease}
.fg-detail-plus:after{transform:rotate(90deg)}
.fg-detail[open] .fg-detail-plus:after{transform:rotate(0deg)}
.fg-detail-body{padding:0 0 27px}
.field-guide .fg-detail-body p{font-size:11px;line-height:1.9;margin:0 0 15px;color:var(--fg-muted)}
.field-guide .fg-detail-body>a{font-size:10px;display:inline-block;border-bottom:1px solid var(--fg-line);line-height:1.8}
.field-guide .fg-detail-body .fg-small{font-size:9px}
.fg-distance{display:flex;flex-direction:column;gap:4px;padding:12px 0 20px}
.fg-distance strong{font-family:var(--font-editorial,'Fraunces',Georgia,serif);font-size:28px;font-weight:350;letter-spacing:-.035em;line-height:1.1}
.fg-distance>span{font-size:10px;color:var(--fg-muted);line-height:1.7}
.fg-climate{display:flex;gap:26px;padding:6px 0 18px}
.fg-climate>div{display:flex;flex-direction:column;gap:5px}
.fg-climate span{font-size:9px;color:var(--fg-muted)}
.fg-climate strong{font-family:var(--font-editorial,'Fraunces',Georgia,serif);font-size:24px;font-weight:350;line-height:1.2}
.field-guide .fg-timezone{display:flex;gap:6px 10px;flex-wrap:wrap;border-top:1px solid var(--fg-line);padding-top:16px;margin-top:20px}
.fg-timezone strong{font-weight:500;color:var(--fg-ink);font-variant-numeric:tabular-nums}
.fg-timezone>span:last-child{width:100%;font-size:10px}
.fg-bottom{display:flex;justify-content:space-between;gap:25px;align-items:flex-start;padding-top:25px}
.fg-actions{display:flex;align-items:center;gap:26px;flex-wrap:wrap}
.fg-actions>a{display:flex;align-items:center;gap:20px;font-size:11px;line-height:1.5;min-height:42px}
.field-guide .fg-download{display:flex;align-items:center;justify-content:space-between;gap:27px;font-size:11px;line-height:1.5;background:var(--fg-ink);color:var(--fg-paper);border:1px solid var(--fg-ink);border-radius:1px;padding:13px 18px;min-height:46px;transition:background-color .25s ease}
.field-guide .fg-download:hover{background:#355044}
.fg-download>span:last-child{font-size:16px}
.fg-sources{max-width:310px;font-size:10px;color:var(--fg-muted)}
.fg-sources summary{cursor:pointer;padding:10px 0;text-align:right;text-underline-offset:4px}
.fg-sources summary:hover{text-decoration:underline}
.fg-sources p{line-height:1.85;margin:8px 0 15px}
.fg-sources a{display:block;font-size:10px;padding:4px 0}
.field-guide .fg-status{font-size:10px;line-height:1.8;color:var(--fg-muted);margin:12px 0 0;min-height:18px}
.fg-export{border-top:1px solid var(--fg-line);margin-top:18px;padding-top:16px;font-size:11px}
.fg-export summary{cursor:pointer}
.fg-export textarea{display:block;margin:14px 0 0;padding:18px;width:100%;resize:vertical;border:1px solid var(--fg-line);background:#fff9;color:var(--fg-ink);font-size:12px;line-height:1.8;border-radius:1px}
html[lang^=zh] .field-guide :is(h2,h3){font-family:'Noto Serif SC','Songti SC','SimSun',serif;letter-spacing:-.02em;line-height:1.35}
html[lang^=zh] .fg-heading h2{font-size:clamp(33px,3.6vw,54px)}
html[lang^=zh] .fg-heading h2 em{font-style:normal}
html[lang^=zh] .fg-season-content{min-height:315px}
@media(min-width:1600px){.field-guide{padding-left:76px;padding-right:76px}}
@media(max-width:950px){.fg-main{grid-template-columns:1fr .9fr;gap:34px}.fg-season-panel{padding:24px 20px 0}.fg-heading{gap:40px;grid-template-columns:1.1fr .8fr}.fg-practical{gap:20px}.fg-detail summary{font-size:11px;gap:8px}.fg-bottom{gap:20px}.fg-actions{gap:12px 24px}}
@media(max-width:700px){.field-guide{padding-top:72px;padding-bottom:58px}.fg-heading{grid-template-columns:1fr;gap:24px;margin-bottom:30px}.field-guide .fg-heading h2{font-size:clamp(36px,7vw,48px)}.field-guide .fg-heading-copy{max-width:500px;font-size:13px}.fg-route-switch{gap:25px}.field-guide .fg-route-switch button{font-size:12px;gap:8px;padding:17px 0}.fg-route-index{font-size:8px}.fg-route-days{font-size:9px;padding:2px 5px}.fg-main{grid-template-columns:1fr;padding-top:32px;gap:34px}.fg-season-panel{padding:25px 23px 0}.fg-season-content{min-height:0}.field-guide .fg-season-content h3{font-size:33px;max-width:none}.field-guide .fg-season-copy{max-width:none;font-size:12px}.fg-months{grid-template-columns:repeat(6,minmax(0,1fr));gap:5px}.field-guide .fg-months button{min-height:44px}.fg-practical{grid-template-columns:1fr;gap:0;margin-top:32px}.fg-detail:not(:last-child){border-bottom:1px solid var(--fg-line)}.field-guide .fg-detail summary{font-size:13px;min-height:62px}.fg-detail-body{padding-left:26px;max-width:600px}.field-guide .fg-detail-body p{font-size:12px}.fg-bottom{display:block;padding-top:24px}.fg-actions{gap:15px 27px}.fg-sources{margin-top:16px;max-width:none}.fg-sources summary{text-align:left;display:list-item}.field-guide .fg-route-note{padding-left:0}.fg-route-note{font-size:10px}.field-guide .fg-timeline p{font-size:12px}.field-guide .fg-small{font-size:10px}.fg-season-tone{font-size:10px}html[lang^=zh] .fg-season-content{min-height:0}}
@media(max-width:359px){.field-guide{padding-left:18px;padding-right:18px}.fg-route-switch{gap:19px}.fg-route-days{display:none}.fg-season-panel{padding:22px 16px 0}}
@media(prefers-reduced-motion:reduce){.field-guide *{transition:none!important;animation:none!important;scroll-behavior:auto!important}}