/* ---------------------------------------------
*   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: #382f2c;
    --color-black-2-rgb: 56, 47, 44;
    --color-black-3: #323232;
    --color-black-3-rgb: 50, 50, 50;
    --color-white-1: #fff;
    --color-white-1-rgb: 255, 255, 255;
    --color-white-2: #d9ffff;
    --color-white-2-rgb: 217, 255, 255;
    --color-white-3: #fcf2ef;
    --color-white-3-rgb: 252, 242, 239;
    --color-white-4: #fcf6ed;
    --color-white-4-rgb: 252, 246, 237;
    --color-theme-1: #0047b9;
    --color-theme-1-rgb: 0, 71, 185;
    --color-blue-1: #00529d;
    --color-blue-1-rgb: 0, 82, 157;
    --color-blue-2: #d2e5f8;
    --color-blue-2-rgb: 210, 229, 248;
    --color-green-1: #6bc598;
    --color-green-1-rgb: 107, 197, 152;
    --color-red-1: #d81832;
    --color-red-1-rgb: 216, 24, 50;
    --color-gray-1: #a8a7a7;
    --color-gray-1-rgb: 168, 167, 167;
    --color-gray-2: #888888;
    --color-gray-2-rgb: 136, 136, 136;
    --color-brown-1: #2e0b0e;
    --color-brown-1-rgb: 46, 11, 14;
    --color-brown-2: #2e2624;
    --color-brown-2-rgb: 46, 38, 36;
    --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-white-2);
    color: var(--color-theme-1);
}

::selection {
    background-color: var(--color-white-2);
    color: var(--color-theme-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(5 / var(--design-width) * 100vw);
    border: 0;
    margin-top: calc(5 / var(--design-width) * 100vw);
    background: 0;
    pointer-events: none;
}
@media print, screen and (min-width: 751px) {
    hr {
        margin-top: calc(5 * var(--contents-width-pc) / var(--design-width) * 1px);
        padding-top: calc(5 * var(--contents-width-pc) / var(--design-width) * 1px);
    }
}