/* ---------------------------------------------
*   Custom Properties
--------------------------------------------- */
:root {
    --design-width: 375;
    --contents-width: 375;
    --contents-side-padding: 10;
    --minwidth: 320;
    --root-fz: 32;
    --line-height: 1.5;
    --hover-opacity-ratio: 0.8;
    --hover-duration: .3s;
    --color-base-1: #000;
    --color-base-1-rgb: 0, 0, 0;
    --color-black-1: #000;
    --color-black-1-rgb: 0, 0, 0;
    --color-black-2: #111;
    --color-black-2-rgb: 17, 17, 17;
    --color-black-3: #4d4d4d;
    --color-black-3-rgb: 77, 77, 77;
    --color-black-4: #333;
    --color-black-4-rgb: 51, 51, 51;
    --color-white-1: #fff;
    --color-white-1-rgb: 255, 255, 255;
    --color-white-2: #FFFCED;
    --color-white-2-rgb: 255, 252, 237;
    --color-white-3: #f5f5f1;
    --color-white-3-rgb: 245, 245, 241;
    --color-white-4: #edf8ff;
    --color-white-4-rgb: 237, 248, 255;
    --color-white-5: #EBF8FF;
    --color-white-5-rgb: 235, 248, 255;
    --color-theme-1: #2C83DC;
    --color-theme-1-rgb: 44, 131, 220;
    --color-blue-1: #d9f3fc;
    --color-blue-1-rgb: 217, 243, 252;
    --color-blue-2: #b9e8ff;
    --color-blue-2-rgb: 185, 232, 255;
    --color-orange-1: #dd731f;
    --color-orange-1-rgb: 221, 115, 31;
    --color-yellow-1: #FFFF00;
    --color-yellow-1-rgb: 255, 255, 0;
    --color-yellow-2: #b78e37;
    --color-yellow-2-rgb: 183, 142, 55;
    --color-navy-1: #544b67;
    --color-navy-1-rgb: 84, 75, 103;
    --color-navy-2: #312d32;
    --color-navy-2-rgb: 49, 45, 50;
    --color-navy-3: #003153;
    --color-navy-3-rgb: 0, 49, 83;
    --color-red-1: #cd3559;
    --color-red-1-rgb: 205, 53, 89;
    --color-red-2: #c10230;
    --color-red-2-rgb: 193, 2, 48;
    --color-gray-1: #adadad;
    --color-gray-1-rgb: 173, 173, 173;
    --color-gray-2: #c6c6c6;
    --color-gray-2-rgb: 198, 198, 198;
    --color-brown-1: #382F2C;
    --color-brown-1-rgb: 56, 47, 44;
    --color-brown-2: #231815;
    --color-brown-2-rgb: 35, 24, 21;
    --ff-root: "Noto Sans JP", sans-serif;
    --ff-zenkaku: "Zen Kaku Gothic New", sans-serif;
    --ff-lato: "Lato",serif;
}
@media print, screen and (min-width: 751px) {
    :root {
        --contents-width-pc: 430;
        --root-fz: 16;
    }
}

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

::-moz-selection {
    background-color: var(--color-theme-1);
    color: var(--color-white-1);
}

::selection {
    background-color: var(--color-theme-1);
    color: var(--color-white-1);
}

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

body {
    min-width: calc(var(--minwidth) * 1px);
    line-height: var(--line-height);
    font-feature-settings: "palt" 1;
    overflow-x: hidden;
}
@media print, screen and (min-width: 751px) {
    body {
        min-width: initial;
    }
}

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

/* ---------------------------------------------
*   <img> tag
--------------------------------------------- */
img {
    max-width: 100%;
    height: auto;
    vertical-align: bottom;
}

/* ---------------------------------------------
*   <hr> tag as anchor target
--------------------------------------------- */
hr {
    display: block;
    width: auto;
    height: 0;
    padding-top: calc(15 / var(--design-width) * 100vw);
    border: 0;
    margin-top: calc(75 / var(--design-width) * 100vw);
    background: 0;
    pointer-events: none;
}
@media print, screen and (min-width: 751px) {
    hr {
        margin-top: calc(75 * var(--contents-width-pc) / var(--design-width) * 1px);
        padding-top: calc(15 * var(--contents-width-pc) / var(--design-width) * 1px);
    }
}