/* ---------------------------------------------
*   Custom Properties
--------------------------------------------- */
:root {
    --design-width: 375;
    --contents-width: 335;
    --contents-side-padding: 10;
    --minwidth: 320;
    --root-fz: 16;
    --line-height: 1.5;
    --hover-opacity-ratio: 0.8;
    --hover-duration: .3s;
    --color-base-1: #8C4100;
    --color-base-1-rgb: 140, 65, 0;
    --color-black-1: #000;
    --color-black-1-rgb: 0, 0, 0;
    --color-black-2: #262626;
    --color-black-2-rgb: 38, 38, 38;
    --color-black-3: #231815;
    --color-black-3-rgb: 35, 24, 21;
    --color-white-1: #FFF;
    --color-white-1-rgb: 255, 255, 255;
    --color-theme-1: #00b7de;
    --color-theme-1-rgb: 0, 183, 222;
    --color-theme-2: #ff6d99;
    --color-theme-2-rgb: 255, 109, 153;
    --color-bg-1: #fffadf;
    --color-bg-1-rgb: 255, 250, 223;
    --color-bg-2: #daece8;
    --color-bg-2-rgb: 218, 236, 232;
    --color-bg-3: #d5ecf9;
    --color-bg-3-rgb: 213, 236, 249;
    --color-bg-4: #fffcd8;
    --color-bg-4-rgb: 255, 252, 216;
    --color-bg-5: #ffffd5;
    --color-bg-5-rgb: 255, 255, 213;
    --color-border-1: #2a2a2a;
    --color-border-1-rgb: 42, 42, 42;
    --color-purple-1: #423884;
    --color-purple-1-rgb: 66, 56, 132;
    --color-purple-2: #5e66ad;
    --color-purple-2-rgb: 94, 102, 173;
    --color-purple-3: #827cae;
    --color-purple-3-rgb: 130, 124, 174;
    --color-yellow-1: #ffdd17;
    --color-yellow-1-rgb: 255, 221, 23;
    --color-yellow-2: #fff471;
    --color-yellow-2-rgb: 255, 244, 113;
    --color-shadow-1: #c39c89;
    --color-shadow-1-rgb: 195, 156, 137;
    --color-shadow-2: #009ad5;
    --color-shadow-2-rgb: 0, 154, 213;
    --color-shadow-3: #f0426f;
    --color-shadow-3-rgb: 240, 66, 111;
    --color-gray-1: #dbdbdb;
    --color-gray-1-rgb: 219, 219, 219;
    --color-gray-2: #7d7d7d;
    --color-gray-2-rgb: 125, 125, 125;
    --color-gray-3: #707070;
    --color-gray-3-rgb: 112, 112, 112;
    --color-gray-4: #dcdcdc;
    --color-gray-4-rgb: 220, 220, 220;
    --color-green-1: #5ad3ba;
    --color-green-1-rgb: 90, 211, 186;
    --color-brown-1: #906300;
    --color-brown-1-rgb: 144, 99, 0;
    --color-red-1: #ff3232;
    --color-red-1-rgb: 255, 50, 50;
    --color-blue-1: #46aae8;
    --color-blue-1-rgb: 70, 170, 232;
    --ff-noto: "Noto Sans JP", serif;
    --ff-open: Open Sans, serif;
}
@media screen and (min-width: 751px) {
    :root {
        --contents-width: 500;
        --root-fz: 16;
    }
}

/* ---------------------------------------------
*   Universal selector
--------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
}

/* ---------------------------------------------
*   html, body
--------------------------------------------- */
html,
body {
    color: var(--color-black-2);
    font-size: calc(var(--root-fz) * 1px);
    font-family: var(--ff-noto);
    -webkit-text-size-adjust: 100%;
}
@media screen and (max-width: 750px) {
    html,
    body {
        font-size: calc(var(--root-fz) / var(--design-width) * 100vw);
        overflow-x: hidden;
    }
}

body {
    min-width: calc(var(--minwidth) * 1px);
    overflow-x: hidden;
    line-height: var(--line-height);
    font-feature-settings: "palt";
}

/* ---------------------------------------------
*   <a> tag
--------------------------------------------- */
a {
    color: inherit;
    text-decoration: none;
    cursor: pointer;
}

/* ---------------------------------------------
*   <img> tag
--------------------------------------------- */
img {
    width: 100%;
    height: auto;
    display: block;
}

/* ---------------------------------------------
*   <hr> tag as anchor target
--------------------------------------------- */
hr[id^=anchor-] {
    display: block;
    width: auto;
    height: 0;
    padding: calc(var(--fixed-header-height) * 1px) 0 0 0;
    border: 0;
    margin: calc(var(--fixed-header-height) * -1px) 0 0 0;
    background: 0;
    pointer-events: none;
}

/* ---------------------------------------------
*   font
--------------------------------------------- */
@font-face {
    font-family: "Noto Sans JP";
    font-style: normal;
    font-weight: 300 900;
    font-stretch: 100%;
    src: url("../font/NotoSansJP-VariableFont_wght.ttf") format("truetype");
    font-display: swap;
}
@font-face {
    font-family: "Open Sans";
    src: url("../font/OpenSans-VariableFont_wdth,wght.ttf") format("truetype");
    font-weight: 300 800;
    font-stretch: 75% 100%;
    font-style: normal;
    font-display: swap;
}