@charset "utf-8";
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@100;300;400;500;700;900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Roboto+Mono:ital,wght@0,100;0,300;0,400;0,500;0,700;1,100;1,300;1,400;1,500;1,700&display=swap');

/* ========== Variable ========== */
:root {
  /* ========== Colors ========== */
  --blue-dark-color: #1864ab;
  --blue-color: #228be6;
  --blue-light-color: #e7f5ff;
  --green-dark-color: #087f5b;
  --green-color: #0ca678;
  --green-light-color: #e6fcf5;
  --orange-dark-color: #d9480f;
  --orange-color: #f76707;
  --orange-light-color: #fff4e6;
  --red-dark-color: #c92a2a;
  --red-color: #f03e3e;
  --red-light-color: #fff5f5;
  --violet-dark-color: #5f3dc4;
  --violet-color: #7048e8;
  --violet-light-color: #f3f0ff;
  --white-color: #ffffff;
  --black-color: #212529;
  --black-color2: #343a40;
  --black-color3: #495057;
  --gray-color0: #fafafa;
  --gray-color1: #dee2e6;
  --gray-color2: #d9d9d9;

  /* ========== Font & typography ========== */
}

/* ========== CSS Initialization ========== */
html,
body,
div,
span,
applet,
object,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
pre,
a,
abbr,
acronym,
address,
big,
cite,
code,
del,
dfn,
em,
img,
ins,
kbd,
q,
s,
samp,
small,
strike,
strong,
sub,
sup,
tt,
var,
b,
u,
i,
center,
dl,
dt,
dd,
ol,
ul,
li,
fieldset,
form,
label,
legend,
table,
caption,
tbody,
tfoot,
thead,
tr,
th,
td,
article,
aside,
canvas,
details,
embed,
figure,
figcaption,
footer,
header,
hgroup,
menu,
nav,
output,
ruby,
section,
summary,
time,
mark,
audio,
video {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}
article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section {
  display: block;
}
body {
  line-height: 1;
}
ol,
ul {
  list-style: none;
}
a {
  text-decoration: none;
}

/* ========== Common Styles ========== */
body {
  /* color */
  background-color: var(--white-color);
  color: var(--black-color2);
  /* width */
  width: 100%;
  max-width: 1300px;
  padding: 0;
  margin: 0 auto;
  font-size: 18px;
  /* font */
  font-family: -apple-system, BlinkMacSystemFont, 'Noto Sans KR', sans-serif;
  font-weight: 300;
}
input,
textarea {
  /* -webkit-appearance: none; */
}
.fade-in-box-1 {
  animation: fadein 0.5s;
  -moz-animation: fadein 0.5s; /* Firefox */
  -webkit-animation: fadein 0.5s; /* Safari and Chrome */
  -o-animation: fadein 0.5s; /* Opera */
}
.fade-in-box-2 {
  animation: fadein 1s;
  -moz-animation: fadein 1s; /* Firefox */
  -webkit-animation: fadein 1s; /* Safari and Chrome */
  -o-animation: fadein 1s; /* Opera */
}
.fade-in-box-3 {
  animation: fadein 1.5s;
  -moz-animation: fadein 1.5s; /* Firefox */
  -webkit-animation: fadein 1.5s; /* Safari and Chrome */
  -o-animation: fadein 1.5s; /* Opera */
}
@keyframes fadein {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
@-moz-keyframes fadein {
  /* Firefox */
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
@-webkit-keyframes fadein {
  /* Safari and Chrome */
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
@-o-keyframes fadein {
  /* Opera */
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
/* Button */
.btn {
  border: none;
  padding: 8px;
  margin: 0;
  border-radius: 6px;
  transition: all 0.1s ease-in-out;
  text-align: center;
}
.btn:hover {
  cursor: pointer;
}
.btn-blue {
  color: var(--blue-color);
  background-color: var(--blue-light-color);
}
.btn-blue:hover {
  color: var(--blue-light-color);
  background-color: var(--blue-color);
}
.btn-green {
  color: var(--green-color);
  background-color: var(--green-light-color);
}
.btn-green:hover {
  color: var(--green-light-color);
  background-color: var(--green-color);
}
.btn-orange {
  color: var(--orange-color);
  background-color: var(--orange-light-color);
}
.btn-orange:hover {
  color: var(--orange-light-color);
  background-color: var(--orange-color);
}
.btn-red {
  color: var(--red-color);
  background-color: var(--red-light-color);
}
.btn-red:hover {
  color: var(--red-light-color);
  background-color: var(--red-color);
}
.btn-violet {
  color: var(--violet-color);
  background-color: var(--violet-light-color);
}
.btn-violet:hover {
  color: var(--violet-light-color);
  background-color: var(--violet-color);
}
.btn-txt-blue {
  color: var(--black-color2);
  background-color: inherit;
}
.btn-txt-blue:hover {
  color: var(--blue-color);
  background-color: var(--gray-color0);
}
.btn-txt-blue-hover {
  color: var(--blue-color);
  background-color: var(--gray-color0);
}
.btn-txt-green {
  color: var(--black-color2);
  background-color: inherit;
}
.btn-txt-green:hover {
  color: var(--green-color);
  background-color: var(--gray-color0);
}
.btn-txt-green-hover {
  color: var(--green-color);
  background-color: var(--gray-color0);
}
.btn-txt-orange {
  color: var(--black-color2);
  background-color: inherit;
}
.btn-txt-orange:hover {
  color: var(--orange-color);
  background-color: var(--gray-color0);
}
.btn-txt-orange-hover {
  color: var(--orange-color);
  background-color: var(--gray-color0);
}
.btn-txt-red {
  color: var(--black-color2);
  background-color: inherit;
}
.btn-txt-red:hover {
  color: var(--red-color);
  background-color: var(--gray-color0);
}
.btn-txt-red-hover {
  color: var(--red-color);
  background-color: var(--gray-color0);
}
.btn-txt-violet {
  color: var(--black-color2);
  background-color: inherit;
}
.btn-txt-violet:hover {
  color: var(--violet-color);
  background-color: var(--gray-color0);
}
.btn-txt-violet-hover {
  color: var(--violet-color);
  background-color: var(--gray-color0);
}
.btn-sm {
  font-size: 0.8em;
}
.btn-md {
  font-size: 1em;
}
.btn-lg {
  font-size: 1.125em;
}
/* Link */
.link {
  transition: color 0.1s ease-in-out;
}
.link-blue {
  color: var(--blue-color);
}
.link-blue:hover {
  color: var(--blue-dark-color) !important;
}
.link-green {
  color: var(--green-color);
}
.link-green:hover {
  color: var(--green-dark-color) !important;
}
.link-orange {
  color: var(--orange-color);
}
.link-orange:hover {
  color: var(--orange-dark-color) !important;
}
.link-red {
  color: var(--red-color);
}
.link-red:hover {
  color: var(--red-dark-color) !important;
}
.link-violet {
  color: var(--violet-color);
}
.link-violet:hover {
  color: var(--violet-dark-color) !important;
}
.link-hover-blue {
  color: var(--black-color2);
}
.link-hover-blue:hover {
  color: var(--blue-color) !important;
}
.link-hover-green {
  color: var(--black-color2);
}
.link-hover-green:hover {
  color: var(--green-color) !important;
}
.link-hover-orange {
  color: var(--black-color2);
}
.link-hover-orange:hover {
  color: var(--orange-color) !important;
}
.link-hover-red {
  color: var(--black-color2);
}
.link-hover-red:hover {
  color: var(--red-color) !important;
}
.link-hover-violet {
  color: var(--black-color2);
}
.link-hover-violet:hover {
  color: var(--violet-color) !important;
}
.link-sm {
  font-size: 0.8em;
}
.link-md {
  font-size: 1em;
}
.link-lg {
  font-size: 1.125em;
}
/* Page */
.page {
  padding: 20px;
  box-shadow: 1px 3px 5px var(--gray-color1);
  box-sizing: border-box;
  border-radius: 6px;
}
/* ========== Header ========== */
header {
  width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-color: var(--white-color);
}
.nav {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  width: 100%;
  padding: 30px;
  box-sizing: border-box;
  height: 100%;
}
.nav .sidebar__open {
  display: none;
}
.nav a.nav__logo {
  font-weight: bold;
  background: linear-gradient(
    to right,
    var(--blue-color),
    var(--red-color),
    var(--violet-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav a.nav__logo:hover {
  cursor: pointer;
  color: var(--primary-sub-color);
}
.nav .nav__menu {
  flex: 1;
}
.nav ul.nav__list {
  display: flex;
  flex-direction: row;
  justify-content: flex-end;
  align-items: center;
}
.nav__list > li.nav__item {
  margin: 5px 10px;
}
li.nav__item > a {
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}
li.nav__item > a > span {
  padding-left: 2px;
  font-size: 0.75em;
}
/* search */
.search__toggle .uil-times {
  display: none;
}
.search {
  display: none;
  width: 100%;
  margin-bottom: 20px;
}
.search__group {
  display: flex;
  align-items: center;
  width: calc(100% - 60px);
  height: 50px;
  margin: 0 30px;
  padding: 0;
  flex-direction: row;
  background-color: var(--gray-color0);
  border-radius: 6px;
}
.search__group > input,
.search__group > button {
  border: none;
  padding: 10px;
  height: 100%;
  margin: 0;
  box-sizing: border-box;
  color: var(--black-color3);
  background-color: inherit;
}
.search__group .search__input {
  flex: 1;
  padding: 10px 20px;
  background-color: inherit;
  border-top-left-radius: 6px;
  border-bottom-left-radius: 6px;
}
.search__group .search__input:focus {
  outline: none;
}
.search__group .search__submit {
  border-top-right-radius: 6px;
  border-bottom-right-radius: 6px;
  width: 50px;
}
.search__group .search__submit:hover {
  cursor: pointer;
}

/* ========== Main ========== */
main {
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  display: flex;
  flex-direction: row;
  justify-content: flex-start;
}

/* ========== Sidebar ========== */
#sidebar {
  display: block;
  width: 300px;
  padding: 20px;
}
.sidebar__item {
  margin-bottom: 25px;
}
.sidebar__item .sidebar__title {
  font-weight: bold;
  margin-bottom: 15px;
  display: flex;
  flex-direction: row;
  align-items: center;
  color: var(--black-color3);
}
.sidebar__item .sidebar__title > i {
  margin-right: 3px;
}
.sidebar__item .sidebar__title > span {
  flex: 1;
}
.sidebar__item .sidebar__contents {
  padding: 0 5px;
  font-size: 0.9em;
}
/* Sidebar Close Button */
.sidebar__close {
  margin-bottom: 10px;
  font-size: 0.9em;
  text-align: right;
  display: none;
  transition: color 0.1s ease-in-out;
}
.sidebar__close:hover {
  cursor: pointer;
  color: var(--blue-color);
}
/* Notice */
.sidebar .notice a {
  color: var(--black-color2);
  display: inline-block;
  padding: 10px 0;
  transition: color 0.1s ease-in-out;
}
.sidebar .notice a::before {
  content: '*';
  font-weight: bold;
}
.sidebar .notice a:hover {
  color: var(--red-color);
}
/* Category */
.sidebar .category .tt_category a {
  color: var(--black-color2);
  display: inline-block;
  padding: 10px 0;
  transition: color 0.1s ease-in-out;
}
.sidebar .category .tt_category a:hover {
  color: var(--red-color);
}
.sidebar .category .tt_category .sub_category_list a {
  padding-left: 10px;
}
.sidebar .category .tt_category .sub_category_list a::before {
  content: '-';
  font-weight: bold;
}
.sidebar .category_list > li {
  border-top: 1px dashed var(--gray-color0);
}
.sidebar .category .c_cnt {
  display: none;
}
/* Recent & Popular Post */
.sidebar .sidebar__post .sidebar__contents > ul > li {
  display: flex;
  align-items: center;
  margin-bottom: 15px;
}
.sidebar .sidebar__post .post__image {
  width: 50px;
  height: 50px;
  margin-right: 10px;
  border-radius: 100%;
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    to bottom right,
    var(--blue-light-color),
    var(--red-light-color)
  );
  transition: all 0.1s ease-in-out;
}
.sidebar .sidebar__post .post__image img {
  position: absolute;
  top: 0;
  left: 0;
  transform: translate(50, 50);
  width: 100%;
  height: 100%;
  object-fit: cover;
  margin: auto;
}
.sidebar .sidebar__post .post__image:hover {
  opacity: 0.9;
  cursor: pointer;
}
.sidebar .sidebar__post .post__content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}
.sidebar .sidebar__post .post__content a {
  color: var(--black-color2);
  transition: color 0.1s ease-in-out;
}
.sidebar .sidebar__post .post__content a:hover {
  color: var(--red-color);
}
.sidebar .sidebar__post .post__content .post__tit {
  margin-bottom: 7px;
}
.sidebar .sidebar__post .post__content .post__ctg {
  font-size: 0.8em;
  color: var(--black-color3);
}
/* Comment */
.sidebar .comment .sidebar__contents ul {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}
.sidebar .comment .sidebar__contents ul li {
  display: flex;
  flex-direction: column;
  justify-content: center;
  margin-bottom: 8px;
  padding-bottom: 8px;
}
.sidebar .comment li.balloon {
  position: relative;
  height: 100%;
  padding: 10px;
  background: var(--gray-color0);
  border-radius: 10px;
}
.sidebar .comment li.balloon::after {
  border-top: 15px solid var(--gray-color0);
  border-left: 13px solid transparent;
  border-right: 0px solid transparent;
  border-bottom: 0px solid transparent;
  content: '';
  position: absolute;
  top: 10px;
  left: -13px;
}
.sidebar .comment .sidebar__contents .comment__link {
  color: var(--black-color2);
  margin-top: 10px;
  transition: color 0.1s ease-in-out;
}
.sidebar .comment .sidebar__contents .comment__link:hover {
  color: var(--red-color);
}
.sidebar .comment .sidebar__contents .comment__info {
  font-size: 0.9em;
  display: flex;
  flex-direction: row;
  align-items: center;
}
.comment__name,
.comment__date {
  color: var(--black-color2);
}
.comment__name::after {
  content: ' ';
  margin: 0 4px 0 2px;
}
/* Tag */
.sidebar .tag .sidebar__contents ul {
  display: flex;
  flex-direction: row;
  justify-content: flex-start;
  align-items: center;
  flex-wrap: wrap;
  box-sizing: border-box;
}
.sidebar .tag .sidebar__contents ul > li {
  margin: 0 5px 5px 0;
}
.sidebar .tag .sidebar__contents ul > li a.sidebar__tag-btn {
  display: block;
  border-radius: 15px;
  margin: 0 5px 5px 0;
  box-sizing: border-box;
  transition: all 0.1s ease-in-out;
  padding: 7px;
  white-space: nowrap;
}
.sidebar .tag .sidebar__contents ul > li a.sidebar__tag-btn::before {
  content: '# ';
}
/* Counter */
.sidebar .counter .counter__item {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: flex-start;
  margin-bottom: 10px;
}
.sidebar .counter .counter__item .counter__tit {
  margin-right: 10px;
}
.sidebar .counter .counter__item:last-child .counter__tit {
  color: var(--red-color);
}
.sidebar .counter .counter__item .counter__today {
  margin-right: 10px;
}
.sidebar .counter .counter__item .counter__deltagroup {
  display: flex;
  align-items: center;
  justify-content: flex-start;
}
.sidebar .counter .counter__item .counter__delta {
  font-size: 0.9em;
  flex: 1;
  font-weight: bold;
}
/* ========== Content ========== */
#content {
  flex: 1;
  padding: 20px;
  box-sizing: border-box;
  width: calc(100% - 340px);
  height: auto;
}
.content__item .content__tit {
  display: flex;
  align-items: center;
  color: var(--black-color3);
  margin-bottom: 1em;
  font-weight: bold;
}
.content__item .content__tit i {
  margin-right: 3px;
}
/* Tag Cloud */
.tag__cloud .tag__list {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
}
.tag__cloud .tag__list .tag__item {
  display: inline-block;
  margin: 0 7px 7px 0;
  white-space: nowrap;
  border-radius: 15px;
}
/* Guestbook */
.guestbook__form .guestbook__info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  margin-bottom: 10px;
}
.guestbook__info .guestbook__info__item {
  flex: 1;
  display: flex;
  align-items: center;
  width: 100%;
  margin-bottom: 10px;
}
.guestbook__info .guestbook__info__item > i {
  margin-right: 5px;
}
.guestbook__info .guestbook__info__item > input {
  margin: 0;
  padding: 10px;
  box-sizing: border-box;
  border: none;
  background-color: var(--gray-color0);
  color: var(--black-color3);
  border-radius: 6px;
  width: 100%;
}
.guestbook__info .guestbook__info__item > input:focus {
  outline: none;
}
.guestbook__form .guestbook__textarea {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
}
.guestbook__form .guestbook__textarea > textarea {
  width: 100%;
  padding: 20px;
  background-color: var(--gray-color0);
  color: var(--black-color3);
  border: none;
  border-radius: 6px;
  height: 130px;
  transition: height 0.1s ease-in-out;
  line-height: 1.5em;
  box-sizing: border-box;
}
.guestbook__form .guestbook__textarea > textarea:focus {
  outline: none;
}
.guestbook__textarea > button {
  margin-top: 10px;
}
.guestbook__list {
  margin-top: 10px;
}
.guestbook__list ul {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.guestbook__header {
  display: flex;
  align-items: center;
}
.guestbook__header-avatar {
  width: 60px;
  height: 60px;
  overflow: hidden;
  margin-right: 15px;
  text-align: center;
}
.guestbook__header-avatar i {
  font-size: 55px;
  color: var(--blue-color);
}
.guestbook__list ul > li > ul .guestbook__header-avatar i {
  color: var(--red-color);
}
.guestbook__header-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}
.guestbook__header-info .name {
  font-weight: bold;
  margin-bottom: 5px;
}
.guestbook__header-info .date {
  display: flex;
  align-items: center;
  color: var(--black-color3);
  font-size: 0.8em;
}
.guestbook__header-info .date i {
  margin-right: 3px;
}
.guestbook__header-control {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.guestbook__header-control a {
  width: 1em;
  height: 1em;
}
.guestbook__list ul > li {
  margin-bottom: 30px;
}
.guestbook__list ul > li > ul {
  margin-top: 30px;
}
.guestbook__list ul li ul li {
  margin: 0 0 0 30px;
}
.guestbook__item {
}
.guestbook__item .guestbook__body {
  padding: 20px;
  line-height: 1.5em;
}
/* CaptchaBox */
#tt_captChaBottom {
  position: static !important;
}
#tt_captChaBottom .wrap_box_border {
  height: 1px !important;
}
#tt_captChaBottom #innerBox {
  position: static !important;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  padding-top: 15px;
}
/* ========== MAIN CONTENT ========== */
/* Article */
.article {
  box-sizing: border-box;
}
.article .article__container {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}
/* Index Article */
.article .article__idx-item {
  display: flex;
  flex-direction: row;
  margin-bottom: 30px;
  height: 240px;
}
.article__idx-item .article__idx-img-wrap {
  border-radius: 5px;
  width: 200px;
  height: 200px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    to bottom right,
    var(--blue-light-color),
    var(--red-light-color),
    var(--violet-light-color)
  );
  margin-right: 20px;
  transition: opacity 0.1s ease-in-out;
}
.article__idx-item .article__idx-img-default {
  border-radius: 5px;
}
.article__idx-item .article__idx-img-rect {
  border-radius: 0;
}
.article__idx-item .article__idx-img-circle {
  border-radius: 100%;
}
.article__idx-item .article__idx-img-wrap:hover {
  opacity: 0.8;
  cursor: pointer;
}
.article__idx-item .article__idx-img-wrap img {
  position: absolute;
  top: 0;
  left: 0;
  transform: translate(50, 50);
  width: 100%;
  height: 100%;
  object-fit: cover;
  margin: auto;
}
.article__idx-item .article__idx-summary-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  word-break: break-all;
}
.article__idx-summary-wrap a.article__idx-tit {
  font-weight: bold;
  margin-bottom: 12px;
  line-height: 1.4em;
}
.article__idx-summary-wrap .article__idx-date {
  display: flex;
  flex-direction: row;
  font-size: 0.8em;
}
.article__idx-summary-wrap .article__idx-date a {
  display: flex;
  flex-direction: row;
  align-items: center;
  margin-right: 10px;
}
.article__idx-summary-wrap .article__idx-date a i {
  margin-right: 3px;
}
.article__idx-summary-wrap .article__idx-summary {
  line-height: 1.7em;
  max-height: 130px;
  overflow-y: hidden;
  font-size: 0.9em;
  margin-top: 10px;
}
.article__idx-btn-wrap {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  margin-left: 20px;
}
.article__idx-btn-wrap button {
  margin-bottom: 3px;
  width: 45px;
  height: 45px;
}
/* Permalink Article */
.article__header {
  margin-bottom: 50px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.article__header .article__tit {
  font-weight: bold;
  font-size: 1.7em;
  margin-bottom: 30px;
  line-height: 1.7em;
}
.article__header .article__desc {
  display: flex;
  align-items: center;
}
.article__desc .article__left {
  margin-right: 10px;
  position: relative;
  width: 55px;
  height: 55px;
  overflow: hidden;
  border-radius: 100%;
}
.article__desc .article__left img {
  margin-right: 10px;
  position: absolute;
  top: 0;
  left: 0;
  transform: translate(50, 50);
  width: 100%;
  height: 100%;
  object-fit: cover;
  margin: auto;
}
.article__desc .article__right {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.article__right .article__info {
  flex: 1;
  display: flex;
  align-items: center;
}
.article__right .article__info > * {
  margin-right: 10px;
  font-size: 0.8em;
}
.article__right .article__info > *:last-child {
  margin: 0;
}
.article__right .article__info div,
.article__right .article__info a {
  color: var(--black-color3);
}
.article__right .article__control {
  flex: 1;
  display: flex;
  align-items: center;
  margin-top: 10px;
}
.article__right .article__control > div {
  display: flex;
  align-items: center;
}
.article__right .article__control > * {
  margin-right: 10px;
}
.article__right .article__control a,
.article__right .article__control div {
  color: var(--black-color3);
}
/* Article Content */
.article__container .article__content {
  box-sizing: border-box;
  width: 100%;
  line-height: 1.8em;
  word-break: break-all;
}
/* Toc */
.article__container .article__content .article__content-toc {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 10vh;
  right: 0;
  background: var(--white-color);
  max-height: 80vh;
  height: auto;
  width: 260px;
  padding: 20px;
  background: var(--gray-color0);
  border-top-left-radius: 6px;
  border-bottom-left-radius: 6px;
  overflow: scroll;
  z-index: 80;
  -ms-overflow-style: none; /* IE and Edge */
  scrollbar-width: none; /* Firefox */
}
.article__container .article__content .article__content-toc::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Opera*/
}
.article__container .article__content .article__content-toc p {
  display: inline-block;
}
.article__container .article__content .article__content-toc .indent1 {
  margin-left: 15px;
}
.article__container .article__content .article__content-toc .indent2 {
  margin-left: 30px;
}
.article__container .article__content .article__content-toc .indent3 {
  margin-left: 45px;
}
.article__container .article__content .article__content-toc .indent0:hover,
.article__container .article__content .article__content-toc .indent1:hover,
.article__container .article__content .article__content-toc .indent2:hover,
.article__container .article__content .article__content-toc .indent3:hover {
  cursor: pointer;
}
.article__container .article__content figure span {
  width: 100%;
  text-align: center;
  display: block;
}
.article__container .article__content figure span img {
  max-width: 100%;
  width: auto;
  height: auto;
  max-height: 600px;
}
.article__container .article__content figure {
  width: 100%;
  margin: 1.8em 0;
}
.article__container .article__content figure figcaption {
  color: var(--black-color3);
  font-style: italic;
  line-height: 1.5em;
}
.article__container .article__content h1:hover,
.article__container .article__content h2:hover,
.article__container .article__content h3:hover,
.article__container .article__content h4:hover {
  cursor: pointer;
}
.article__container .article__content h1:hover::after,
.article__container .article__content h2:hover::after,
.article__container .article__content h3:hover::after,
.article__container .article__content h4:hover::after {
  content: ' #';
  color: var(--blue-color);
}
.article__container .article__content h1,
.article__container .article__content h2,
.article__container .article__content h3,
.article__container .article__content h4 {
  margin: 1.5em 0 0.8em 0;
  font-weight: bold;
}
.article__container .article__content h1 {
  font-size: 2em;
}
.article__container .article__content h2 {
  font-size: 1.75em;
}
.article__container .article__content h3 {
  font-size: 1.5em;
}
.article__container .article__content h4 {
  font-size: 1.25em;
}
.article__container .article__content pre {
  margin: 1.5em 0 0.8em 0;
  border-radius: 6px;
  position: relative;
}
.article__container .article__content pre code {
  line-height: 1.5em;
  padding: 20px;
  padding-top: 30px;
  font-family: 'Roboto Mono', monospace;
  font-weight: 400;
  font-size: 0.8em;
  letter-spacing: 1px;
}
.article__container .article__content pre .code-lang {
  position: absolute;
  top: 0;
  right: 0;
  width: 90px;
  text-align: center;
  background-color: var(--gray-color1);
  color: var(--black-color3);
  border-top-right-radius: 6px;
  border-bottom-left-radius: 6px;
  padding: 8px 0;
  font-weight: bold;
  font-size: 0.8em;
  z-index: 5px;
  line-height: 1em;
}
.article__container .article__content pre .code-lang:hover {
  cursor: pointer;
  color: var(--blue-color);
}
.article__container .article__content ul {
  margin: 1.25em 0 1.25em 30px;
}
.article__container .article__content p b,
.article__container .article__content ul b,
.article__container .article__content ol b {
  font-weight: bold;
}
.article__container .article__content p > code,
.article__container .article__content li > code,
.article__container .article__content span > code,
.article__container .article__content div > code {
  color: var(--blue-color);
  background-color: var(--blue-light-color);
  border-radius: 6px;
  padding: 0 6px 3px 6px;
}
.article__container .article__content a {
  color: var(--blue-color);
  transition: all 0.1s ease-in-out;
}
.article__container .article__content a:hover {
  color: var(--blue-color);
  background-color: var(--blue-light-color);
}
.article__container .article__content figure a:hover {
  background-color: inherit;
}
.article__container
  .article__content
  blockquote[data-ke-style='style2']::before {
  content: '✔️ Tip';
  margin-bottom: 2px;
  font-weight: bold;
  display: block;
  color: var(--green-color);
}
.article__container .article__content blockquote[data-ke-style='style2'] {
  background-color: var(--green-light-color) !important;
  border-left: 4px solid var(--green-color) !important;
  padding: 21px 25px 20px 25px;
  color: inherit;
}
.article__container
  .article__content
  blockquote[data-ke-style='style3']::before {
  content: '💬 NOTE';
  margin-bottom: 2px;
  font-weight: bold;
  display: block;
  color: var(--blue-color);
}
.article__container .article__content blockquote[data-ke-style='style3'] {
  background-color: var(--blue-light-color) !important;
  border: none !important;
  border-left: 4px solid var(--blue-color) !important;
  color: inherit;
  margin-bottom: 20px !important;
}
/* Article Comment */
.article__container .article__comment {
  margin-top: 20px;
}
.article__comment-form .article__comment-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  margin-bottom: 10px;
}
.article__comment-info .article__comment-info-item {
  flex: 1;
  display: flex;
  align-items: center;
  width: 100%;
  margin-bottom: 10px;
}
.article__comment-info .article__comment-info-item > i {
  margin-right: 5px;
}
.article__comment-info .article__comment-info-item > input {
  margin: 0;
  padding: 10px;
  box-sizing: border-box;
  border: none;
  background-color: var(--gray-color0);
  color: var(--black-color3);
  border-radius: 6px;
  width: 100%;
}
.article__comment-info .article__comment-info-item > input:focus {
  outline: none;
}
.article__comment-form .article__comment-textarea {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
}
.article__comment-form .article__comment-textarea > textarea {
  width: 100%;
  padding: 20px;
  background-color: var(--gray-color0);
  color: var(--black-color3);
  border: none;
  border-radius: 6px;
  height: 130px;
  transition: height 0.1s ease-in-out;
  line-height: 1.5em;
  box-sizing: border-box;
}
.article__comment-form .article__comment-textarea > textarea:focus {
  outline: none;
}
.article__comment-textarea > button {
  margin-top: 10px;
}
.article__comment-secret {
  display: flex;
  align-items: center;
}
.article__comment-secret > input {
  border: none;
  background-color: var(--gray-color0);
  margin: 0 10px;
}
.article__comment-secret .uil-lock {
  display: none;
}
/* Article 댓글 리스트 */
.article__comment-list {
  margin-top: 20px;
}
.article__comment-list ol,
.article__comment-list ul {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.article__comment-list ol > li > .article__comment-item,
.article__comment-list ul > li > .article__comment-item {
  margin-bottom: 25px;
  display: flex;
  flex-direction: row;
  width: 100%;
  box-sizing: border-box;
}
.article__comment-list ul > li > .article__comment-item {
  flex-direction: row-reverse;
}
.article__comment-list .article__comment-img {
  width: 60px;
  height: 60px;
  border-radius: 100%;
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    to bottom right,
    var(--blue-light-color),
    var(--red-light-color)
  );
  transition: all 0.1s ease-in-out;
}
.article__comment-list .article__comment-img img {
  position: absolute;
  top: 0;
  left: 0;
  transform: translate(50, 50);
  width: 100%;
  height: 100%;
  object-fit: cover;
  margin: auto;
}
.article__comment-list .article__comment-content-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  box-sizing: border-box;
  padding: 0 10px;
}
.article__comment-list ul > li .article__comment-content-wrap {
  align-items: flex-end;
}
.article__comment-content-wrap .article__comment-name {
  color: var(--black-color2);
}
.article__comment-content-wrap .article__comment-content {
  display: flex;
  align-items: flex-end;
}
ul > li .article__comment-content-wrap .article__comment-content {
  flex-direction: row-reverse;
}
.article__comment-content-wrap .article__comment-content p {
  display: inline-block;
  margin-top: 10px;
  background-color: var(--gray-color0);
  border-radius: 6px;
  line-height: 1.75em;
  padding: 10px;
  width: auto;
}
.article__comment-content-wrap .article__comment-content .date {
  flex: 1;
  padding: 10px;
  font-size: 0.8em;
  color: var(--black-color3);
}
/* Paging */
.paging__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.paging__container .paging__numbox {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}
.paging__container .paging__numbox a {
  min-width: 1em;
  min-height: 1em;
  margin-right: 5px;
}
.paging__container .paging__numbox a:last-child {
  margin-right: 0;
}
/* Recommend article */
.article__prev,
.article__next {
  display: none;
  position: fixed;
  bottom: 50px;
  background: var(--white-color);
  box-shadow: 1px 3px 5px var(--gray-color1);
  padding: 20px;
  max-width: 450px;
  max-height: 190px;
  overflow: hidden;
  z-index: 50;
  align-items: center;
}
.article__prev {
  left: 10%;
}
.article__next {
  right: 10%;
}
.article__prev .article__prev-img,
.article__next .article__next-img {
  width: 150px;
  height: 150px;
  border-radius: 100%;
  margin-right: 15px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    to bottom right,
    var(--blue-light-color),
    var(--red-light-color)
  );
  transition: all 0.1s ease-in-out;
}
.article__prev .article__prev-img img,
.article__next .article__next-img img {
  position: absolute;
  top: 0;
  left: 0;
  transform: translate(50, 50);
  width: 100%;
  height: 100%;
  object-fit: cover;
  margin: auto;
  transition: opacity 0.1s ease-in-out;
}
.article__prev .article__prev-img img:hover,
.article__next .article__next-img img:hover {
  opacity: 0.8;
  cursor: pointer;
}
.article__prev .article__prev-desc,
.article__next .article__next-desc {
  flex: 1;
  display: flex;
  flex-direction: column;
}
.article__prev .article__prev-info,
.article__next .article__next-info {
  font-weight: bold;
}
.article__prev .article__prev-tit,
.article__next .article__next-tit {
  margin-bottom: 13px;
  margin-top: 7px;
  line-height: 1.7em;
}
.article__prev .article__prev-date,
.article__next .article__next-date {
  display: flex;
  align-items: center;
  color: var(--black-color3);
}
.article__prev .article__prev-date i,
.article__next .article__next-date i {
  margin-right: 3px;
}
/* ========== Footer ========== */
footer {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 30px;
  border-top: 1px solid var(--gray-color0);
  margin-bottom: 280px;
}
.footer__body {
  display: flex;
  flex-direction: row;
}
.footer__logo-container {
  flex: 1;
}
.footer__about-container,
.footer__sns-container {
  width: 250px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}
.footer__about-container a,
.footer__sns-container a {
  flex: 1;
  margin-top: 5px;
  padding: 5px 0;
}
.footer__copyright {
  margin-top: 20px;
  font-size: 0.9em;
  display: flex;
}
.footer__copyright p {
  margin-right: 10px;
}
.footer__copyright p:last-child {
  margin-right: 0;
}

/* ============== Advertisement ============== */
.ad__upper-content,
.ad__lower-content {
  box-sizing: border-box;
  width: 100%;
  padding: 0;
  margin: 0;
}
.ad__upper-content {
  margin-bottom: 10px;
}
.ad__lower-content {
  margin-top: 10px;
}
@media screen and (max-width: 1900px) {
  .article__container .article__content .article__content-toc {
    width: 160px;
  }
}
@media screen and (max-width: 1720px) {
  .article__container .article__content .article__content-toc {
    position: static;
    top: 0;
    width: 100%;
    height: auto;
    padding: 20px;
    border-radius: 0;
    box-sizing: border-box;
  }
}
@media screen and (max-width: 1300px) {
  /* Recommend article */
  .article__prev,
  .article__next {
    max-width: 40%;
  }
  .article__prev {
    left: 50px;
  }
  .article__next {
    right: 50px;
  }
}
@media screen and (max-width: 960px) {
  .nav .sidebar__open {
    display: block;
    margin-right: 15px;
  }
  .nav .sidebar__open:hover {
    cursor: pointer;
    color: var(--blue-color);
  }

  /* ========== Sidebar ========== */
  #sidebar {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    background-color: var(--white-color);
    opacity: 0.95;
    z-index: 80;
    width: 400px;
    height: 100%;
    overflow: scroll;
    border-right: 1px solid var(--gray-color1);
    box-sizing: border-box;
  }
  #sidebar::-webkit-scrollbar {
    display: none;
  }
  .sidebar__close {
    display: block;
  }

  /* Recommend article */
  .article__prev,
  .article__next {
    display: none !important;
  }

  /* ========== Footer ========== */
  footer {
    margin-bottom: 0;
  }
}
@media screen and (max-width: 720px) {
  /* ========== Common Styles ========== */
  body {
    margin-bottom: 110px;
  }
  /* Page */
  .page {
    padding: 17px;
  }
  /* ========== Header ========== */
  .nav__menu,
  .search {
    box-shadow: 0px -3px 5px -2px var(--gray-color1);
    background-color: var(--white-color);
    height: 60px;
    margin-bottom: 0;
  }
  .nav__menu {
    display: flex;
    align-items: center;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 98;
  }
  .nav__list {
    width: 100%;
    text-align: center;
  }
  .nav__list > .nav__item {
    flex: 1;
  }
  .nav__list > .nav__item > a > span {
    display: none;
  }
  .search {
    position: fixed;
    bottom: 50px;
    left: 0;
    width: 100%;
    z-index: 99;
    align-items: center;
    justify-content: center;
  }
  .search__group {
    height: 45px;
  }
  /* ========== Sidebar ========== */
  #sidebar {
    width: 100%;
    padding-bottom: 90px;
  }

  /* ========== Tag Cloud ========== */
  .tag__cloud .tag__list {
    justify-content: center;
  }

  /* ========== Guestbook ========== */
  .guestbook__header-avatar {
    width: 40px;
    height: 40px;
    margin-right: 10px;
  }
  .guestbook__header-avatar i {
    font-size: 35px;
  }
  .guestbook__list ul li ul li {
    margin-left: 20px;
  }

  /* ========== MAIN CONTENT ========== */
  /* Index Article */
  .article .article__idx-item {
    flex-direction: column;
    align-items: center;
    margin-bottom: 15px;
    height: auto;
  }
  .article__idx-item .article__idx-img-wrap {
    width: 250px;
    height: 250px;
    margin-right: 0;
    margin-bottom: 30px;
  }
  .article__idx-btn-wrap {
    flex-direction: row;
    justify-content: flex-end;
    align-items: center;
    margin-top: 25px;
    width: 100%;
  }
  .article__idx-btn-wrap button:first-child {
    margin-right: 3px;
  }
  .article__idx-summary-wrap .article__idx-date {
    font-size: 0.7em;
  }
  .article__right .article__info {
    flex-direction: column;
    align-items: flex-start;
  }
  .article__right .article__info > div,
  .article__right .article__info > a {
    padding: 3px 0;
  }
  .article__right .article__control {
    display: none;
  }
  /* Article Comment List */
  ol > li .article__comment-content-wrap .article__comment-content {
    flex-direction: column;
    align-items: flex-start;
  }
  /* Article Comment List */
  ul > li .article__comment-content-wrap .article__comment-content {
    flex-direction: column;
    align-items: flex-end;
  }
  .article__comment-content-wrap .article__comment-content .date {
    padding: 10px 0;
  }

  /* Paging */
  .paging__container .paging__numbox {
    display: none;
  }

  /* ========== Footer ========== */
  .footer__body {
    flex-direction: column;
  }
  .footer__about-container,
  .footer__sns-container {
    margin-top: 10px;
    padding-top: 10px;
    width: 100%;
  }
  .footer__copyright {
    flex-direction: column;
  }
  .footer__copyright p {
    margin-bottom: 10px;
  }
  .footer__copyright p:last-child {
    margin-bottom: 0;
  }
}