/**
 * OJS SSL 基础样式
 * @author GCG
 */
*, *::before, *::after { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--ssi-font-body);
    font-size: 18px;
    line-height: 1.6;
    color: var(--ssi-on-background);
    background: var(--ssi-background);
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--ssi-deep-navy); text-decoration: none; }
a:hover { color: var(--ssi-action-blue); }

h1, h2, h3, h4, h5, h6 {
    font-family: var(--ssi-font-display);
    color: var(--ssi-ink-black);
    margin-top: 0;
}

.ssi-container {
    width: 100%;
    max-width: var(--ssi-container-max);
    margin: 0 auto;
    padding-left: var(--ssi-margin-mobile);
    padding-right: var(--ssi-margin-mobile);
}

@media (min-width: 768px) {
    .ssi-container {
        padding-left: var(--ssi-margin-desktop);
        padding-right: var(--ssi-margin-desktop);
    }
}

.ssi-label-caps {
    font-family: var(--ssi-font-label);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    line-height: 1;
}

.ssi-headline-lg {
    font-family: var(--ssi-font-display);
    font-size: 28px;
    font-weight: 600;
    line-height: 1.2;
}

@media (min-width: 768px) {
    .ssi-headline-lg { font-size: 32px; }
}

.ssi-article-title {
    font-family: var(--ssi-font-body);
    font-size: 24px;
    font-weight: 600;
    line-height: 1.3;
}

.ssi-body-md { font-size: 18px; line-height: 1.6; }
.ssi-body-sm { font-size: 16px; line-height: 1.6; }

.ssi-section-title {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--ssi-primary);
}

.ssi-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--ssi-deep-navy);
    color: var(--ssi-on-primary);
    border: none;
    padding: 14px 32px;
    border-radius: var(--ssi-radius);
    font-family: var(--ssi-font-display);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.ssi-btn-primary:hover {
    color: var(--ssi-on-primary);
    box-shadow: 0 8px 20px rgba(16, 20, 126, 0.25);
    transform: translateY(-1px);
}

.ssi-btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: var(--ssi-deep-navy);
    border: 1px solid var(--ssi-deep-navy);
    padding: 10px 24px;
    border-radius: var(--ssi-radius);
    font-family: var(--ssi-font-display);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
}

.ssi-btn-secondary:hover {
    background: var(--ssi-deep-navy);
    color: var(--ssi-on-primary);
}

.ssi-btn-submit {
    background: var(--ssi-primary);
    color: var(--ssi-on-primary);
    border: none;
    padding: 8px 24px;
    border-radius: var(--ssi-radius-lg);
    font-family: var(--ssi-font-label);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
}

.ssi-btn-submit:hover { opacity: 0.9; color: var(--ssi-on-primary); }

.ssi-grid-main {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--ssi-gutter);
}

@media (min-width: 992px) {
    .ssi-grid-main { grid-template-columns: 1fr var(--ssi-sidebar-width); }
    .ssi-grid-main--wide { grid-template-columns: 2fr 1fr; }
}

.ssi-main-col { min-width: 0; }
.ssi-sidebar { min-width: 0; }

.ssi-skip-links {
    position: absolute;
    left: -9999px;
}

.ssi-skip-links a:focus {
    position: fixed;
    left: 8px;
    top: 8px;
    z-index: 10001;
    background: #000;
    color: #fff;
    padding: 8px 16px;
}

.ssi-page-main {
    padding-top: var(--ssi-header-height);
    min-height: 60vh;
}

.ssi-page-content {
    padding: 0 0 64px;
    background: var(--ssi-background);
}

.ssi-icon {
    display: inline-block;
    width: 20px;
    height: 20px;
    vertical-align: middle;
    fill: currentColor;
}

.ssi-back-to-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    padding: 0;
    border: 1px solid var(--ssi-outline-variant);
    border-radius: var(--ssi-radius-lg);
    background: #fff;
    color: var(--ssi-primary);
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(16, 20, 126, 0.12);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition:
        opacity 0.25s ease,
        visibility 0.25s ease,
        transform 0.25s ease,
        background 0.2s ease,
        color 0.2s ease,
        border-color 0.2s ease,
        box-shadow 0.2s ease;
    z-index: 900;
}

.ssi-back-to-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.ssi-back-to-top:hover {
    background: var(--ssi-primary);
    color: var(--ssi-on-primary);
    border-color: var(--ssi-primary);
    box-shadow: 0 6px 18px rgba(0, 0, 86, 0.22);
}

.ssi-back-to-top:focus-visible {
    outline: 2px solid var(--ssi-action-blue);
    outline-offset: 2px;
}

.ssi-back-to-top__icon {
    width: 22px;
    height: 22px;
    display: block;
}

::selection {
    background: var(--ssi-primary-fixed);
    color: var(--ssi-deep-navy);
}