/* Shared masthead for the home page and every Iceland tool. */
.site-header.site-header{box-sizing:border-box;position:relative;inset:auto;display:flex;align-items:center;justify-content:space-between;width:calc(100% - 112px);max-width:1240px;height:114px;margin:0 auto;padding:0;border:0;border-bottom:1px solid var(--header-line);z-index:45;font:16px/1.5 Inter,"Helvetica Neue","PingFang SC","Microsoft YaHei",sans-serif;letter-spacing:normal;color:var(--header-ink);--header-ink:#202522;--header-muted:#737875;--header-line:#dfe3e1;--header-surface:#fff;--header-hover:#edf1e9;--header-selection:#eaf2dd;--header-control:#445239;--header-focus:#4565e8;--header-shadow:0 12px 45px #20252214}
:root[data-theme="dark"] .site-header{--header-ink:#e8eee8;--header-muted:#a3afa6;--header-line:#303c34;--header-surface:#1c2520;--header-hover:#27352b;--header-selection:#30402b;--header-control:#d1ecaa;--header-focus:#c8ef82;--header-shadow:0 16px 50px #0005}
body:is(.iceland-page,.hotel-page,.weather-page) .site-header{--header-ink:#202522;--header-muted:#657580;--header-line:#d5e0e6;--header-surface:#fff;--header-hover:#edf2f5;--header-selection:#e0ecf3;--header-control:#31586b;--header-focus:#416f8b}
:root[data-theme="dark"] body:is(.iceland-page,.hotel-page,.weather-page) .site-header{--header-ink:#e4edf2;--header-muted:#a0b3bf;--header-line:#30414d;--header-surface:#19242a;--header-hover:#253744;--header-selection:#263c4b;--header-control:#c0ddeb;--header-focus:#b5d4e5}
.site-header *{box-sizing:border-box}
.site-header .brand{display:flex;align-items:center;gap:11px;font-size:20px;font-weight:650;line-height:1;letter-spacing:normal;white-space:nowrap;text-decoration:none;color:inherit}
.site-header .brand-mark{display:block;width:34px;height:34px;font-size:34px;line-height:1}
.site-header .brand-slash{display:block;margin:0 4px;font-size:22px;font-weight:300;color:#bec3bf}
.site-header .brand-caption{display:block;font-size:13px;font-weight:400;letter-spacing:.02em;color:var(--header-muted)}
.site-header .header-actions{display:flex;align-items:center;gap:30px}
.site-header nav{display:flex;align-items:center;gap:37px}
.site-header nav a{position:relative;display:flex;align-items:center;min-height:44px;padding:10px 0;font-size:14px;line-height:1.5;text-decoration:none;color:inherit}
.site-header nav a::after{content:"";position:absolute;bottom:3px;left:0;right:0;height:2px;background:currentColor;transform:scaleX(0)}
.site-header nav a:hover::after,.site-header nav a[aria-current="page"]::after{transform:scaleX(1)}
.site-header .theme-picker{position:relative;z-index:10;margin:0;padding:0;font-size:13px;line-height:1.5}
.site-header .theme-picker summary{display:flex;align-items:center;justify-content:center;gap:8px;box-sizing:border-box;width:124px;height:44px;min-height:44px;margin:0;padding:0 11px;border:1px solid var(--header-line);border-radius:24px;cursor:pointer;list-style:none;color:var(--header-ink);font:400 13px/1.5 Inter,"Helvetica Neue","PingFang SC","Microsoft YaHei",sans-serif;background:transparent;transition:background-color .18s,border-color .18s}
.site-header .theme-picker summary::-webkit-details-marker{display:none}
.site-header .theme-picker summary:hover,.site-header .theme-picker[open] summary{background:var(--header-hover)}
.site-header :is(a,summary):focus-visible{outline:3px solid var(--header-focus);outline-offset:4px}
.site-header .theme-current{display:block;min-width:4em;text-align:center;white-space:nowrap;line-height:1.5}
.site-header .theme-icon{display:block;width:18px;height:18px;flex:0 0 18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.site-header .theme-chevron{display:block;width:12px;height:12px;flex:0 0 12px;fill:none;stroke:currentColor;stroke-width:1.5;transition:transform .2s}
.site-header .theme-picker[open] .theme-chevron{transform:rotate(180deg)}
.site-header [data-theme-icon]{display:none}
:root[data-appearance="light"] .site-header [data-theme-icon="light"],:root[data-appearance="dark"] .site-header [data-theme-icon="dark"],:root[data-appearance="auto"] .site-header [data-theme-icon="auto"]{display:block}
.site-header .theme-menu{position:absolute;top:calc(100% + 12px);right:0;min-width:0;width:208px;margin:0;padding:8px;border:1px solid var(--header-line);border-radius:17px;background:var(--header-surface);color:var(--header-ink);box-shadow:var(--header-shadow)}
.site-header .theme-menu-heading{margin:6px 10px 9px;padding:0;color:var(--header-muted);font-size:12px;font-weight:400;letter-spacing:.03em}
.site-header .theme-option{display:flex;position:relative;align-items:center;gap:12px;min-height:46px;padding:10px;border-radius:10px;cursor:pointer;color:var(--header-ink);font-size:14px;line-height:1.5}
.site-header .theme-option input{position:absolute;width:1px;height:1px;opacity:0;margin:0;padding:0}
.site-header .theme-option small{display:block;color:var(--header-muted);font-size:12px;margin-top:1px}
.site-header .theme-option:hover{background:var(--header-hover)}
.site-header .theme-option:has(input:checked){background:var(--header-selection);color:var(--header-control)}
.site-header .theme-option:has(input:focus-visible){outline:2px solid var(--header-focus);outline-offset:1px}
.site-header .theme-check{display:flex;align-items:center;margin-left:auto;opacity:0;font-size:16px}
.site-header .theme-option input:checked~.theme-check{opacity:1}
.site-header .site-icon{display:block;width:1em;height:1em;flex-shrink:0;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.site-header .site-icon-asterisk{stroke-width:2.6;stroke-linecap:butt}
.site-header .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:1050px){.site-header .header-actions{gap:24px}.site-header nav{gap:26px}.site-header .brand-caption,.site-header .brand-slash{display:none}}
@media(max-width:1000px){.site-header.site-header{width:calc(100% - 64px)}}
@media(max-width:700px){
 .site-header.site-header{width:calc(100% - 40px);height:117px;display:grid;grid-template-columns:1fr auto;grid-template-rows:44px 44px;row-gap:6px;padding:16px 0 7px;align-items:center}
 .site-header .brand{grid-column:1;grid-row:1;gap:8px;font-size:18px;letter-spacing:-.03em}.site-header .brand-mark{width:27px;height:27px;font-size:27px}
 .site-header .header-actions{display:contents}.site-header .header-actions nav{grid-column:1/-1;grid-row:2;display:flex;justify-content:space-between;gap:24px}
 .site-header .header-actions .theme-picker{grid-column:2;grid-row:1;justify-self:end}.site-header .theme-picker summary{width:44px;height:44px;padding:0}.site-header .theme-current,.site-header .theme-chevron{display:none}
 .site-header .theme-menu{width:202px}.site-header .theme-menu-heading{font-size:13px}.site-header .theme-option{min-height:48px}
}
@media(max-width:400px){.site-header .brand{gap:6px;font-size:17px}.site-header .brand-mark{width:25px;height:25px;font-size:25px}}
@media(prefers-reduced-motion:reduce){.site-header *{transition:none!important;animation:none!important}}