/* ==========================================================================
   Editorial — 编辑杂志风
   Monochrome, serif display, hairline rules, generous whitespace.
   Loaded last so it overrides Bootstrap 3 + Xenon defaults.
   ========================================================================== */

:root {
    --cream: #F9F8F6;
    --ink: #1C1C1C;
    --ink-80: rgba(28, 28, 28, 0.8);
    --ink-60: rgba(28, 28, 28, 0.6);
    --ink-40: rgba(28, 28, 28, 0.4);
    --ink-20: rgba(28, 28, 28, 0.2);
    --ink-10: rgba(28, 28, 28, 0.1);
    --serif: Georgia, "Times New Roman", "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
    --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* --------------------------------------------------------------------------
   Base
   -------------------------------------------------------------------------- */

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body,
.page-body,
.page-container,
.page-container .main-content,
.boxed-container .page-container .main-content {
    background-color: var(--cream) !important;
    color: var(--ink);
    font-family: var(--sans);
}

body * {
    box-shadow: none !important;
    text-shadow: none !important;
}

h1, h2, h3, h4, h5, h6,
.text-gray {
    font-family: var(--serif);
    font-weight: 400;
    color: var(--ink);
}

a {
    color: var(--ink);
}

p {
    line-height: 1.75;
}

/* Sharp corners only */
.box2,
.panel,
.panel-default,
.navbar,
.dropdown-menu,
.btn,
.label,
.tooltip-inner,
.popover,
.modal-content,
.alert,
.thumbnail,
.form-control,
.input-group-addon,
.main-footer,
.img-circle,
.xe-user-img img,
.sidebar-menu .logo-env .logo img {
    border-radius: 0 !important;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
    outline: 1px solid var(--ink);
    outline-offset: 3px;
}

/* --------------------------------------------------------------------------
   Sidebar — editorial index column
   -------------------------------------------------------------------------- */

.sidebar-menu,
.sidebar-menu-inner {
    background-color: var(--cream) !important;
}

.sidebar-menu {
    border-right: 1px solid var(--ink-10);
}

.sidebar-menu .logo-env {
    padding: 34px 24px 30px;
    border-bottom: 1px solid var(--ink-10);
}

.sidebar-menu .logo-env .logo img {
    display: none;
}

.sidebar-menu .logo-env .logo {
    display: block;
    line-height: 1;
    font-family: var(--serif);
    font-size: 18px;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--ink);
}

.sidebar-menu .logo-env .logo:before {
    content: "WebStack";
}

.sidebar-menu .main-menu {
    padding: 18px 0;
}

.sidebar-menu .main-menu a {
    color: var(--ink-60) !important;
    background: transparent !important;
    font-family: var(--sans);
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    transition: color 0.5s ease, background-color 0.5s ease;
}

.sidebar-menu .main-menu a:hover {
    color: var(--ink) !important;
    background-color: rgba(28, 28, 28, 0.03) !important;
}

.sidebar-menu .main-menu a > i {
    color: var(--ink-40) !important;
}

.sidebar-menu .main-menu li.active > a {
    color: var(--ink) !important;
    background-color: transparent !important;
}

.sidebar-menu .main-menu > li > a > .title {
    font-family: var(--serif);
    font-size: 17px;
    letter-spacing: 0;
    text-transform: none;
    color: var(--ink);
}

.sidebar-menu .main-menu ul li a .title {
    font-family: var(--sans);
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.sidebar-menu .main-menu li.has-sub > a:before {
    content: none;
}

.sidebar-menu .main-menu ul {
    border-color: var(--ink-10) !important;
}

/* --------------------------------------------------------------------------
   Top toolbar
   -------------------------------------------------------------------------- */

.navbar.user-info-navbar {
    background-color: rgba(249, 248, 246, 0.92) !important;
    border: none;
    border-bottom: 1px solid var(--ink-10);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
}

.navbar.user-info-navbar .user-info-menu > li > a {
    color: var(--ink-60) !important;
    font-family: var(--sans);
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    transition: color 0.5s ease;
}

.navbar.user-info-navbar .user-info-menu > li > a:hover {
    color: var(--ink) !important;
}

.navbar.user-info-navbar .user-info-menu > li.hover-line:before {
    display: none;
}

.navbar.user-info-navbar .user-info-menu > li > a i {
    color: var(--ink-40);
}

.dropdown-menu {
    background-color: var(--cream) !important;
    border: 1px solid var(--ink-10);
}

.dropdown-menu > li > a {
    color: var(--ink-60);
    font-family: var(--sans);
    font-size: 12px;
    letter-spacing: 0.1em;
}

.dropdown-menu > li > a:hover,
.dropdown-menu > li.active > a {
    background-color: rgba(28, 28, 28, 0.04) !important;
    color: var(--ink) !important;
}

/* --------------------------------------------------------------------------
   Masthead
   -------------------------------------------------------------------------- */

.editorial-masthead {
    padding: 80px 0 56px;
    border-bottom: 1px solid var(--ink-10);
    margin-bottom: 8px;
}

.editorial-eyebrow {
    margin: 0 0 26px;
    font-family: var(--sans);
    font-size: 11px;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--ink-40);
}

.editorial-title {
    margin: 0 0 28px;
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(44px, 7vw, 104px);
    line-height: 0.92;
    letter-spacing: -0.03em;
    color: var(--ink);
}

.editorial-sub {
    margin: 0;
    max-width: 32rem;
    font-family: var(--sans);
    font-size: 15px;
    line-height: 1.8;
    font-style: italic;
    color: var(--ink-60);
}

/* --------------------------------------------------------------------------
   Section headings
   -------------------------------------------------------------------------- */

.main-content h1.text-gray,
.main-content h2.text-gray,
.main-content h4.text-gray {
    position: relative;
    margin: 76px 0 40px;
    padding: 0 0 18px;
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(26px, 3vw, 36px);
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--ink);
    border-bottom: 1px solid var(--ink-10);
}

.main-content h1.text-gray i,
.main-content h2.text-gray i,
.main-content h4.text-gray i {
    color: var(--ink-40) !important;
    font-size: 18px;
    margin-right: 12px !important;
    vertical-align: middle;
}

/* --------------------------------------------------------------------------
   Link cards
   -------------------------------------------------------------------------- */

.box2.xe-widget {
    position: relative;
    height: auto !important;
    min-height: 96px;
    margin: 0 !important;
    padding: 22px 6px;
    background-color: transparent !important;
    border: none !important;
    border-bottom: 1px solid var(--ink-10) !important;
    cursor: pointer;
    transition: background-color 0.5s ease, border-color 0.5s ease;
}

.box2.xe-widget:hover {
    transform: none !important;
    box-shadow: none !important;
    background-color: rgba(28, 28, 28, 0.02) !important;
    border-bottom-color: var(--ink-40) !important;
}

.xe-comment-entry {
    display: flex !important;
    align-items: center;
    gap: 16px;
}

.xe-comment-entry img {
    float: none !important;
    flex: 0 0 auto;
    width: 40px;
    height: auto;
    margin: 0 !important;
    padding: 0 !important;
    filter: grayscale(1);
    opacity: 0.9;
    transition: filter 0.6s ease, opacity 0.6s ease;
}

.box2.xe-widget:hover .xe-comment-entry img {
    filter: grayscale(0);
    opacity: 1;
}

.xe-comment {
    position: static !important;
    top: auto !important;
    transform: none !important;
    margin: 0 !important;
    min-width: 0;
}

.xe-comment p {
    margin: 0 24px 0 0 !important;
}

.xe-user-name {
    position: relative;
    display: inline-block;
    color: var(--ink);
    text-decoration: none;
}

.xe-user-name strong {
    font-family: var(--serif);
    font-weight: 400;
    font-size: 20px;
    line-height: 1.3;
    letter-spacing: -0.01em;
    color: var(--ink);
    transition: font-style 0.5s ease;
}

.box2.xe-widget:hover .xe-user-name strong {
    font-style: italic;
}

.xe-user-name::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 100%;
    height: 1px;
    background-color: currentColor;
    transform: scaleX(0);
    transform-origin: right center;
    transition: transform 0.5s ease;
}

.box2.xe-widget:hover .xe-user-name::after {
    transform: scaleX(1);
    transform-origin: left center;
}

.box2.xe-widget::after {
    content: "\2192";
    position: absolute;
    top: 50%;
    right: 6px;
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1;
    color: var(--ink);
    opacity: 0;
    transform: translateY(-50%) translateX(-8px);
    transition: opacity 0.5s ease, transform 0.5s ease;
    pointer-events: none;
}

.box2.xe-widget:hover::after {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
}

.overflowClip_2 {
    margin-top: 6px !important;
    font-family: var(--sans);
    font-size: 13px;
    line-height: 1.75;
    color: var(--ink-60);
}

.label {
    font-family: var(--sans);
    font-weight: 400;
}

.label.label-info,
.label.label-pink,
.label.label-primary,
.label.label-default {
    background-color: var(--ink) !important;
    color: var(--cream) !important;
    font-size: 10px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.label:empty {
    display: none !important;
}

/* --------------------------------------------------------------------------
   Two-column archive on tablet and up
   -------------------------------------------------------------------------- */

@media (min-width: 768px) {
    .main-content .row > .col-sm-3 {
        width: 50% !important;
    }
}

/* --------------------------------------------------------------------------
   Tooltips
   -------------------------------------------------------------------------- */

.tooltip-inner {
    background-color: var(--ink) !important;
    color: var(--cream) !important;
    font-family: var(--sans);
    font-size: 11px;
    letter-spacing: 0.05em;
}

.tooltip.bottom .tooltip-arrow {
    border-bottom-color: var(--ink) !important;
}

.tooltip.top .tooltip-arrow {
    border-top-color: var(--ink) !important;
}

.tooltip.left .tooltip-arrow {
    border-left-color: var(--ink) !important;
}

.tooltip.right .tooltip-arrow {
    border-right-color: var(--ink) !important;
}

/* --------------------------------------------------------------------------
   About page
   -------------------------------------------------------------------------- */

.panel.panel-default {
    background-color: transparent !important;
    border: 1px solid var(--ink-10);
}

.panel.panel-default > .panel-body {
    padding: 34px 40px 40px;
}

.panel h1.text-gray,
.panel h2.text-gray,
.panel h4.text-gray {
    margin-top: 56px;
}

blockquote {
    margin: 0 0 32px;
    padding: 0;
    border: 0 none;
    font-family: var(--serif);
    font-size: 17px;
    font-style: italic;
    line-height: 1.9;
    color: var(--ink-80);
}

blockquote p {
    font-family: var(--serif);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.main-footer {
    background-color: transparent !important;
    border: none;
    border-top: 1px solid var(--ink-10);
    color: var(--ink-60);
}

.main-footer .footer-text {
    font-family: var(--sans);
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ink-40);
}

.main-footer .footer-text a {
    color: var(--ink);
    text-decoration: none;
}

.main-footer .footer-text a:hover {
    text-decoration: underline;
}

.main-footer .go-up a {
    color: var(--ink-40);
}

/* --------------------------------------------------------------------------
   404
   -------------------------------------------------------------------------- */

#about h1 {
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(72px, 16vw, 160px);
    line-height: 0.9;
    letter-spacing: -0.03em;
    color: var(--ink);
    margin: 0 0 32px;
}

#about p {
    font-family: var(--sans);
    font-size: 15px;
    line-height: 1.8;
    color: var(--ink-60);
}

#about a {
    color: var(--ink);
    text-decoration: none;
}

#about a:hover {
    text-decoration: underline;
}

#about,
#about .copyright {
    background-color: transparent !important;
}

#about.bounce-in,
.animated {
    animation: none !important;
}

/* --------------------------------------------------------------------------
   Motion preferences
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    html {
        scroll-behavior: auto;
    }
}