:root {
    --paper-blue: #0677c4;
    --paper-link: #0c91eb;
    --paper-dark-blue: #2b6dad;
    --paper-text: #333;
    --paper-muted: rgba(0, 0, 0, .65);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

html, body, div, span, h1, h2, p, a, img, strong, b, i, em,
dl, dt, dd, ol, ul, li, form, label, header, main, section,
article, nav, footer, button, input, time {
    margin: 0;
    padding: 0;
    border: 0;
}

body {
    min-width: 1200px;
    color: var(--paper-text);
    background: #f1f1f1;
    font: 14px/1.5 "Microsoft YaHei", Arial, SimSun, sans-serif;
}

a {
    color: #333;
    text-decoration: none;
}

a:hover {
    color: #f60;
}

img {
    border: 0;
}

button, input {
    font: inherit;
    outline: 0;
}

.paper-wrapper {
    width: 1200px;
    margin: 0 auto;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
}

.paper-header {
    height: 70px;
    background: #fff;
    border-bottom: 1px solid #e5e5e5;
}

.paper-header-inner {
    height: 70px;
    display: flex;
    align-items: flex-start;
}

.paper-header-logo {
    width: 227px;
    height: 65px;
    margin-top: 5px;
    display: flex;
    align-items: center;
    flex: 0 0 227px;
}

.paper-header-logo img {
    display: block;
    max-width: 205px;
    height: 55px;
    object-fit: contain;
}

.paper-header-logo strong,
.paper-search-logo strong {
    color: var(--paper-dark-blue);
    font-size: 34px;
    letter-spacing: 5px;
}

.paper-nav {
    display: flex;
    align-items: stretch;
}

.paper-nav a {
    height: 69px;
    padding: 0 15px;
    display: block;
    font-size: 14px;
    line-height: 69px;
    text-align: center;
}

.paper-nav a:hover,
.paper-nav a.is-active {
    color: var(--paper-link);
}

.paper-main {
    width: 100%;
    min-height: 650px;
    overflow: hidden;
    background: #fff;
}

.paper-search-hero {
    width: 700px;
    min-height: 300px;
    padding-top: 80px;
    margin: 0 auto;
}

.paper-search-logo {
    height: 90px;
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

.paper-search-logo img {
    display: block;
    max-width: 300px;
    height: 80px;
    object-fit: contain;
}

.paper-search-form {
    position: relative;
    width: 700px;
    height: 50px;
    margin: 0 auto;
    display: flex;
    background: #fff;
    border: 1px solid var(--paper-blue);
    border-radius: 4px;
}

.paper-search-form > input[type="search"] {
    min-width: 0;
    height: 48px;
    padding: 0 20px;
    flex: 1;
    color: #000;
    background: rgba(255, 255, 255, .9);
    border: 0;
    -webkit-appearance: none;
}

.paper-search-form > input[type="search"]::-webkit-search-cancel-button {
    cursor: pointer;
}

.paper-search-form > button {
    position: relative;
    width: 80px;
    height: 48px;
    flex: 0 0 80px;
    color: #fff;
    background: var(--paper-blue);
    border-radius: 0 2px 2px 0;
    cursor: pointer;
}

.paper-search-form > button span::before {
    content: "";
    position: absolute;
    top: 13px;
    left: 29px;
    width: 15px;
    height: 15px;
    border: 2px solid #fff;
    border-radius: 50%;
}

.paper-search-form > button span::after {
    content: "";
    position: absolute;
    top: 29px;
    left: 45px;
    width: 9px;
    height: 2px;
    background: #fff;
    transform: rotate(45deg);
    transform-origin: left center;
}

.paper-search-form > button:hover {
    background: #0869aa;
}

.paper-search-fields {
    position: absolute;
    top: 60px;
    left: 0;
    width: 700px;
    height: 30px;
    display: flex;
    align-items: flex-start;
}

.paper-search-fields label {
    height: 22px;
    margin: 0 10px;
    display: flex;
    align-items: center;
    color: rgba(0, 0, 0, .45);
    font-size: 12px;
    cursor: pointer;
}

.paper-search-fields label:first-child {
    margin-left: 5px;
}

.paper-search-fields input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.paper-search-fields span::before {
    content: "";
    width: 12px;
    height: 12px;
    margin-right: 5px;
    display: inline-block;
    vertical-align: -2px;
    border: 1px solid #aab2bb;
    border-radius: 50%;
    box-shadow: inset 0 0 0 3px #fff;
}

.paper-search-fields input:checked + span {
    color: #4b98ff;
    font-weight: 700;
}

.paper-search-fields input:checked + span::before {
    background: #4b98ff;
    border-color: #4b98ff;
}

.paper-results {
    width: 900px;
    margin: 20px auto 80px;
    background: #fff;
}

.paper-result-heading {
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #dcdcdc;
}

.paper-result-heading h1 {
    height: 30px;
    color: #0087e9;
    font-size: 18px;
    font-weight: 400;
    line-height: 29px;
    border-bottom: 2px solid #0087e9;
}

.paper-result-heading > span {
    color: #999;
    font-size: 12px;
}

.paper-result-heading b {
    color: #0087e9;
    font-weight: 400;
}

.paper-category-list {
    height: 30px;
    margin: 4px 0 4px -8px;
    display: flex;
    flex-wrap: nowrap;
    overflow: hidden;
    white-space: nowrap;
}

.paper-category-list a {
    flex: 0 0 auto;
    height: 22px;
    margin-bottom: 4px;
    padding: 0 10px;
    color: #0a86e2;
    font-size: 12px;
    line-height: 22px;
    border-radius: 11px;
}

.paper-category-list a:hover {
    color: #fff;
    background: #0a86e2;
}

.paper-result-item {
    padding: 10px 0;
    border-bottom: 1px dashed #f3f3f3;
}

.paper-result-item h2 {
    height: 24px;
    margin-bottom: 5px;
    overflow: hidden;
    font-weight: 400;
    line-height: 24px;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.paper-result-item h2 a {
    width: 95%;
    height: 24px;
    display: inline-block;
    overflow: hidden;
    color: #0a0a0a;
    font-size: 14px;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.paper-result-item h2 a:hover {
    color: var(--paper-link);
}

.paper-result-item > p {
    height: 38px;
    overflow: hidden;
    color: var(--paper-muted);
    font-size: 12px;
    line-height: 19px;
    text-align: justify;
}

.paper-result-meta {
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    overflow: hidden;
}

.paper-source {
    width: 620px;
    height: 28px;
    overflow: hidden;
    color: var(--paper-muted);
    font-size: 12px;
    line-height: 28px;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.paper-source i,
.paper-source em {
    font-style: normal;
}

.paper-source em {
    margin: 0 7px;
    color: #aaa;
}

.paper-heat {
    height: 28px;
    margin-right: 10px;
    display: flex;
}

.paper-heat img {
    width: 16px;
    height: 28px;
}

.paper-empty {
    padding: 80px 0 100px;
    color: #999;
    text-align: center;
}

.paper-empty strong {
    display: block;
    margin-bottom: 8px;
    color: #666;
    font-size: 17px;
}

.paper-pagination {
    margin: 30px auto 0;
    padding: 10px;
    display: flex;
    justify-content: center;
    gap: 8px;
    font-family: Tahoma, Verdana, sans-serif;
}

.paper-pagination a,
.paper-pagination span {
    min-width: 40px;
    height: 38px;
    padding: 0 14px;
    color: #333;
    line-height: 36px;
    text-align: center;
    border: 1px solid #ccc;
    border-radius: 3px;
}

.paper-pagination a:hover,
.paper-pagination a.is-current {
    color: #fff;
    background: #0a86e2;
    border-color: #0a86e2;
}

.paper-pagination span.is-disabled {
    color: #bbb;
    background: #fafafa;
}

.paper-footer {
    padding: 30px 0;
    color: #fff;
    background: #333;
    font-size: 14px;
    line-height: 30px;
    text-align: center;
}

.paper-footer a {
    color: #fff;
}

.paper-footer a:hover {
    color: #f60;
}

.paper-footer-main {
    position: relative;
    min-height: 180px;
    padding: 0 0 30px 10px;
    display: flex;
    text-align: left;
    border-bottom: 1px solid #4c4c4c;
}

.paper-footer-links {
    width: 820px;
    display: flex;
}

.paper-footer-links dl {
    width: 182px;
}

.paper-footer-links dt {
    font-size: 18px;
    font-weight: 700;
    line-height: 44px;
}

.paper-footer-links dd {
    font-size: 14px;
    line-height: 26px;
}

.paper-footer-contact {
    width: 350px;
    padding: 10px 0 0 35px;
    color: #ddd;
    border-left: 1px solid #555;
}

.paper-footer-contact p,
.paper-footer-contact div {
    max-height: 52px;
    overflow: hidden;
}

.paper-footer-notice,
.paper-copyright {
    margin-top: 10px;
}

.paper-footer-badges {
    min-height: 34px;
    margin-top: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.paper-footer-badges img {
    max-width: 124px;
    max-height: 40px;
    object-fit: contain;
}

.paper-back-top {
    position: fixed;
    right: 5px;
    bottom: 40px;
    width: 50px;
    height: 50px;
    display: none;
    color: #fff;
    background: #d4d4d4;
    border: 0;
    border-radius: 2px;
    cursor: pointer;
}

.paper-back-top.is-visible {
    display: block;
}

.paper-back-top span {
    display: none;
}

.paper-back-top:hover {
    background: #ffa21a;
}

.paper-back-top:hover span {
    display: inline;
}

@media (max-width: 900px) {
    body {
        min-width: 0;
    }

    .paper-wrapper,
    .paper-results,
    .paper-search-hero,
    .paper-search-form {
        width: calc(100% - 24px);
    }

    .paper-header {
        height: auto;
    }

    .paper-header-inner {
        width: calc(100% - 24px);
        height: auto;
        flex-wrap: wrap;
    }

    .paper-nav {
        width: 100%;
        overflow-x: auto;
    }

    .paper-nav a {
        flex: 0 0 auto;
    }

    .paper-search-fields {
        width: 100%;
    }

    .paper-footer-main {
        display: block;
    }

    .paper-footer-links,
    .paper-footer-contact {
        width: 100%;
    }

    .paper-footer-links {
        flex-wrap: wrap;
    }

    .paper-footer-contact {
        padding-left: 0;
        border-left: 0;
    }
}