:root {
    --paper: #ffffff;
    --bg: #f5f4ef;
    --ink: #1d1b16;
    --ink-2: #47443d;
    --muted: #77736a;
    --line: #e4e1d8;
    --line-strong: #cfcabd;
    --red: #c0362c;
    --red-deep: #a22a21;
    --red-wash: rgba(192, 54, 44, .06);
    --green: #2e7d4f;
    --radius-sm: 4px;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow-paper: 0 1px 2px rgba(29, 27, 22, .05), 0 20px 44px -22px rgba(29, 27, 22, .22);
    --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    --serif: "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.8;
    color: var(--ink);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { line-height: 1.3; margin: 0 0 .5em; color: var(--ink); }
p { margin: 0 0 1em; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

.container { max-width: 1120px; margin: 0 auto; padding: 0 28px; }

:focus-visible { outline: 2px solid var(--red); outline-offset: 3px; border-radius: 2px; }

.skip-link {
    position: absolute;
    left: 16px;
    top: -48px;
    z-index: 200;
    padding: 10px 18px;
    background: var(--ink);
    color: var(--paper);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: top .15s ease;
}
.skip-link:focus { top: 12px; }

::selection { background: rgba(192, 54, 44, .14); }

.main-link { color: var(--red); }
.main-link:hover { text-decoration: underline; text-underline-offset: 3px; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font: 600 15px/1.2 var(--sans);
    cursor: pointer;
    transition: background .15s ease, border-color .15s ease, color .15s ease, transform .15s ease, box-shadow .15s ease;
    white-space: nowrap;
}
.btn:disabled { opacity: .38; cursor: not-allowed; }

.btn-primary { color: #fff; background: var(--red); }
.btn-primary:hover:not(:disabled) { background: var(--red-deep); }

.btn-ghost {
    color: var(--ink);
    background: var(--paper);
    border-color: var(--line-strong);
}
.btn-ghost:hover:not(:disabled) { border-color: var(--ink); }

.btn-lg { padding: 14px 34px; font-size: 16px; }
.btn-sm { padding: 8px 16px; font-size: 14px; }
.btn-block { width: 100%; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    height: 64px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-logo { width: 30px; height: 30px; flex: none; }
.brand-name { font-size: 18px; font-weight: 700; color: var(--ink); }

.site-nav { display: flex; align-items: center; gap: 30px; }
.site-nav > a:not(.nav-cta) {
    color: var(--ink-2);
    font-weight: 500;
    font-size: 16px;
    padding: 8px 0;
    border-bottom: 2px solid transparent;
}
.site-nav > a:not(.nav-cta):hover { color: var(--ink); }
.site-nav > a.active {
    color: var(--ink);
    font-weight: 700;
    border-bottom-color: var(--red);
}
.nav-cta { margin-left: 8px; }

.nav-toggle, .nav-burger { display: none; }

.hero {
    position: relative;
    overflow: hidden;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1.04fr 1fr;
    gap: 64px;
    align-items: center;
    padding-top: 88px;
    padding-bottom: 96px;
}

.seal-line {
    display: none;
    position: absolute;
    left: 16px;
    top: 20px;
    bottom: 20px;
    align-items: center;
    gap: 7px;
}
.seal-line::before {
    content: "";
    width: 0;
    align-self: stretch;
    margin: 14px 0;
    border-left: 1px dashed rgba(192, 54, 44, .55);
}
.seal-line span {
    writing-mode: vertical-rl;
    font-family: var(--serif);
    font-size: 12px;
    letter-spacing: .5em;
    color: rgba(192, 54, 44, .72);
    user-select: none;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 0 0 36px;
}
.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-sm);
    background: var(--paper);
    font-size: 13px;
    font-weight: 500;
    color: var(--ink-2);
}
.hero-tag::before {
    content: "";
    width: 7px;
    height: 7px;
    border-radius: 2px;
    background: var(--green);
    flex: none;
}
.hero-tag.tag-red {
    background: var(--red-wash);
    border-color: rgba(192, 54, 44, .3);
    color: var(--red);
    font-weight: 600;
}
.hero-tag.tag-red::before { background: var(--red); }

.hero h1 {
    font-size: clamp(34px, 4.4vw, 56px);
    font-weight: 800;
    letter-spacing: -.015em;
    margin: 0 0 22px;
}

.hero-sub {
    font-size: 17px;
    color: var(--muted);
    max-width: 32em;
    margin-bottom: 34px;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 22px;
}
.hero-note { color: var(--muted); font-size: 14px; }

.hero-proof {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 0;
    margin: 0;
    padding: 0;
    list-style: none;
    color: var(--muted);
    font-size: 14px;
}
.hero-proof li { display: flex; align-items: center; }
.hero-proof li + li::before {
    content: "";
    width: 1px;
    height: 12px;
    background: var(--line-strong);
    margin: 0 16px;
}

.paper-wrap { position: relative; }

.paper {
    position: relative;
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-paper);
    padding: 26px 28px 22px;
    transform: rotate(-1deg);
}

.paper-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--ink);
    margin-bottom: 4px;
}
.paper-title {
    font-family: var(--serif);
    font-weight: 700;
    font-size: 17px;
    display: inline-flex;
    align-items: baseline;
    gap: 10px;
}
.paper-ver {
    font-size: 12.5px;
    color: #fff;
    background: var(--red);
    border-radius: 3px;
    padding: 2px 8px;
    font-family: var(--sans);
    font-weight: 600;
}
.paper-meta {
    font-size: 12.5px;
    color: var(--muted);
    white-space: nowrap;
}

.paper-questions {
    list-style: none;
    margin: 0;
    padding: 0;
}
.pq {
    display: grid;
    grid-template-columns: 26px 1fr;
    gap: 2px 8px;
    padding: 12px 2px 10px;
}
.pq + .pq { border-top: 1px dashed var(--line); }
.pq-num {
    font-family: var(--serif);
    font-weight: 700;
    font-size: 14.5px;
    color: var(--ink-2);
}
.pq-text {
    font-family: var(--serif);
    font-size: 14.5px;
    line-height: 1.65;
    color: var(--ink);
}
.pq-opts {
    grid-column: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px 18px;
    font-family: var(--serif);
    font-size: 13px;
    line-height: 1.7;
    color: var(--ink-2);
}

.paper-answer {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-top: 12px;
    padding-top: 14px;
    border-top: 1px dashed var(--line-strong);
}
.pa-label {
    font-size: 12px;
    color: var(--muted);
    flex: none;
}
.pa-row { display: flex; gap: 16px; }
.pa-item {
    display: flex;
    align-items: baseline;
    gap: 5px;
    font-size: 12px;
    color: var(--muted);
}
.pa-item b {
    font-family: var(--serif);
    font-size: 16px;
    color: var(--ink);
    min-width: 14px;
    text-align: center;
    border-radius: 3px;
    transition: background .5s ease, color .5s ease;
}
.pa-item b.changed {
    background: var(--red-wash);
    color: var(--red);
    transition: none;
}

.pq {
    transition: transform .55s cubic-bezier(.22, .8, .3, 1);
}

.section { padding: 48px 0; }

.section-alt {
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.sec-head {
    margin-bottom: 36px;
}
.sec-head h2 {
    font-size: clamp(26px, 3vw, 36px);
    font-weight: 800;
    letter-spacing: -.01em;
    margin: 0;
}
.sec-no {
    font-family: var(--serif);
    font-weight: 700;
    color: var(--red);
    margin-right: 14px;
}
.sec-no::after { content: "、"; }
.sec-head .sec-sub {
    color: var(--muted);
    font-size: 15.5px;
    margin: 8px 0 0;
}

.ledger {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 64px;
    margin-top: 40px;
}
.ledger-item {
    border-top: 1px solid var(--line-strong);
    padding: 24px 0 30px;
}
.ledger-item:nth-child(-n+2) { border-top: none; padding-top: 0; }
.ledger-item h3 { font-size: 18px; margin-bottom: 8px; }
.ledger-item h3 small {
    font-size: 13px;
    font-weight: 500;
    color: var(--red);
    margin-left: 10px;
}
.ledger-item p { color: var(--muted); font-size: 15px; margin: 0; }

.slip {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    border: 1.5px dashed var(--line-strong);
    border-radius: var(--radius-lg);
    padding: 34px 40px;
}
.slip-item h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    margin-bottom: 8px;
}
.slip-item h3::before {
    content: "";
    width: 10px;
    height: 10px;
    background: var(--red);
    border-radius: 2px;
    flex: none;
}
.slip-item p { color: var(--muted); font-size: 15px; margin: 0; }

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 56px;
}
.step {
    border-top: 1px solid var(--line);
    padding-top: 20px;
}
.step-num {
    font-family: var(--serif);
    font-size: 34px;
    font-weight: 700;
    color: var(--red);
    line-height: 1;
    display: block;
    margin-bottom: 14px;
}
.step h3 { font-size: 18px; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 15px; margin: 0; }
.steps-cta { margin-top: 48px; }

.scenes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 64px;
}
.scene {
    border-top: 1px solid var(--line-strong);
    padding: 22px 0 28px;
}
.scene h3 { font-size: 17px; margin-bottom: 6px; }
.scene p { color: var(--muted); font-size: 15px; margin: 0; }

.article {
}
.article h3 {
    font-size: 19px;
    margin: 36px 0 10px;
}
.article h3:first-child { margin-top: 0; }
.article p { color: var(--ink-2); font-size: 15.5px; }
.article strong { color: var(--ink); }

.table-wrap {
    overflow-x: auto;
    background: var(--paper);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
}
.compare-table { width: 100%; border-collapse: collapse; min-width: 680px; font-size: 14.5px; }
.compare-table th, .compare-table td { padding: 15px 22px; text-align: left; border-bottom: 1px solid var(--line); }
.compare-table thead th {
    font-size: 13.5px;
    color: var(--muted);
    white-space: nowrap;
    border-bottom: 1px solid var(--ink);
}
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table td:first-child { color: var(--ink-2); font-weight: 600; }
.compare-table .hl {
    background: var(--red-wash);
    color: var(--red);
    font-weight: 700;
}
.compare-table thead th.hl { border-top: 2px solid var(--red); }

.table-hint { display: none; font-size: 13px; color: var(--muted); margin: 10px 0 0; }

.faq-list details, .faq-page details { border-bottom: 1px solid var(--line); }
.faq-list summary, .faq-page summary {
    cursor: pointer;
    font-weight: 600;
    font-size: 16px;
    padding: 18px 34px 18px 0;
    list-style: none;
    position: relative;
    color: var(--ink);
}
.faq-list summary::-webkit-details-marker, .faq-page summary::-webkit-details-marker { display: none; }
.faq-list summary::after, .faq-page summary::after {
    content: "+";
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 20px;
    font-weight: 400;
    color: var(--red);
    transition: transform .2s ease;
}
.faq-list details[open] summary::after, .faq-page details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-list details p, .faq-page details p { color: var(--muted); font-size: 15px; padding-bottom: 20px; margin: 0; }

.wechat-inline { text-align: center; margin-top: 48px; color: var(--muted); }
.wechat-inline .wechat-card { max-width: 420px; margin: 0 auto; text-align: left; }

.more-link { margin-top: 32px; font-size: 15px; color: var(--muted); }

.page-hero {
    padding: 68px 0 40px;
}
.page-hero .container { position: relative; }
.page-hero h1 { font-size: clamp(30px, 3.6vw, 44px); font-weight: 800; letter-spacing: -.01em; margin: 0; }
.page-hero p { color: var(--muted); font-size: 16.5px; margin: 12px 0 0; }

.dl-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: stretch;
}

.dl-card {
    display: flex;
    flex-direction: column;
    background: var(--paper);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
}

.dl-icon {
    min-width: 48px;
    height: 40px;
    padding: 0 12px;
    border-radius: var(--radius-sm);
    background: var(--ink);
    color: var(--paper);
    font-family: var(--serif);
    font-weight: 700;
    font-size: 15px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    justify-self: start;
}
.dl-card > .dl-icon { align-self: flex-start; }
.dl-card h2 { font-size: 20px; }
.dl-req { color: var(--muted); font-size: 13.5px; margin-bottom: 16px; }
.dl-file {
    font-size: 13px;
    color: var(--muted);
    border-top: 1px dashed var(--line-strong);
    border-bottom: 1px dashed var(--line-strong);
    padding: 9px 2px;
    margin-bottom: 18px;
    word-break: break-all;
}
.dl-file span { display: block; }
.dl-na { color: var(--muted); font-style: normal; }
.dl-card form { margin-top: auto; }
.dl-card form + .mac-variant, .mac-variant + .mac-variant { margin-top: 12px; }
.dl-note { font-size: 12.5px; color: var(--muted); margin: 16px 0 0; line-height: 1.7; }

.usp-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 56px;
    margin: 0 auto;
}
.usp {
    padding-top: 0;
    font-size: 14.5px;
    color: var(--muted);
}
.usp strong {
    display: block;
    color: var(--ink);
    font-size: 17px;
    margin-bottom: 6px;
}

.thanks-hero { position: relative; }

.thanks-grid {
    display: grid;
    grid-template-columns: 1.35fr 1fr;
    gap: 24px;
    align-items: start;
}

.thanks-download {
    background: var(--paper);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    padding: 36px;
}

.file-chip {
    display: inline-block;
    border-top: 1px dashed var(--line-strong);
    border-bottom: 1px dashed var(--line-strong);
    color: var(--ink);
    padding: 9px 2px;
    font-weight: 600;
    font-size: 14.5px;
    margin-bottom: 18px;
}

.next-steps { margin-top: 26px; }
.next-steps h2 { font-size: 18px; }
.next-steps ol { margin: 0; padding: 0; list-style: none; counter-reset: n; }
.next-steps li {
    counter-increment: n;
    position: relative;
    padding: 11px 0 11px 34px;
    color: var(--ink-2);
    font-size: 14.5px;
    border-bottom: 1px dashed var(--line);
}
.next-steps li:last-child { border-bottom: none; }
.next-steps li::before {
    content: counter(n);
    position: absolute;
    left: 0; top: 11px;
    font-family: var(--serif);
    font-weight: 700;
    color: var(--red);
    font-size: 17px;
}

.thanks-side {
    background: var(--paper);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    padding: 32px;
}
.thanks-side h2 { font-size: 18px; }
.thanks-side > p { font-size: 14.5px; color: var(--muted); }
.thanks-side .more-link { margin-top: 18px; }

.contact-wrap {
    display: grid;
    grid-template-columns: 1fr 1.05fr;
    gap: 88px;
    align-items: start;
}

.contact-card {
    background: var(--paper);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
}

.contact-steps {
    max-width: 320px;
    margin: 28px auto 0;
    padding: 0;
    list-style: none;
    counter-reset: s;
    text-align: left;
}
.contact-steps li {
    counter-increment: s;
    position: relative;
    padding: 9px 0 9px 30px;
    color: var(--ink-2);
    font-size: 14.5px;
    border-bottom: 1px dashed var(--line);
}
.contact-steps li:last-child { border-bottom: none; }
.contact-steps li::before {
    content: counter(s);
    position: absolute;
    left: 0; top: 9px;
    font-family: var(--serif);
    font-weight: 700;
    color: var(--red);
    font-size: 17px;
}

.contact-aside {
    padding: 12px 0 12px 56px;
    border-left: 1px dashed var(--line-strong);
}
.contact-aside h2 { font-size: 21px; }
.contact-aside .contact-faq-tip { margin-top: 26px; color: var(--muted); font-size: 14.5px; }

.check-list { margin: 0; padding: 0; list-style: none; }
.check-list li {
    position: relative;
    padding: 8px 0 8px 26px;
    color: var(--ink-2);
    font-size: 15px;
}
.check-list li::before {
    content: "";
    position: absolute;
    left: 0; top: 15px;
    width: 12px; height: 12px;
    background: var(--red);
    border-radius: 2px;
}

.wechat-card {
    display: flex;
    align-items: center;
    gap: 20px;
    background: var(--paper);
    border-radius: var(--radius);
    padding: 20px;
    text-align: left;
}
.wechat-card img {
    width: 128px; height: 128px;
    flex: none;
    border-radius: var(--radius-sm);
    border: 1px solid var(--line);
    background: var(--bg);
}
.wechat-text strong { display: block; font-size: 16px; color: var(--ink); margin-bottom: 4px; }
.wechat-text span { font-size: 13px; color: var(--muted); }

.wechat-card.compact {
    flex-direction: column;
    text-align: center;
    padding: 28px;
}
.wechat-card.compact img { width: 168px; height: 168px; }
.wechat-card.compact .wechat-text span { display: block; margin-top: 4px; }

.site-footer {
    background: var(--bg);
    color: var(--muted);
    font-size: 14px;
    border-top: 1px solid var(--line);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.25fr;
    gap: 44px;
    padding-top: 50px;
    padding-bottom: 30px;
}

.footer-brand p { margin-top: 18px; font-size: 13.5px; line-height: 1.8; color: var(--muted); }

.footer-col h4 { color: var(--ink); font-size: 14.5px; margin-bottom: 16px; }
.footer-col a { display: block; color: var(--ink-2); padding: 4px 0; }
.footer-col a:hover { color: var(--red); }

.kw-list { color: var(--muted); font-size: 12.5px; line-height: 2; }
.kw { margin-right: 12px; white-space: nowrap; }

.footer-wechat .wechat-card {
    padding: 14px;
    gap: 14px;
}
.footer-wechat .wechat-card img { width: 84px; height: 84px; }
.footer-wechat .wechat-text strong { color: var(--ink); font-size: 14.5px; }
.footer-wechat .wechat-text span { font-size: 12px; }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .paper { transform: none; }
    .pq { transition: none; }
    .pa-item b { transition: none; }
}

@media (min-width: 901px) {
    .seal-line { display: flex; }
    .paper { padding-left: 58px; }
}

@media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .ledger, .scenes { column-gap: 40px; }
    .contact-wrap { gap: 56px; }
    .contact-aside { padding-left: 40px; }
}

@media (max-width: 900px) {
    .section { padding: 34px 0; }
    .hero-inner {
        grid-template-columns: 1fr;
        gap: 52px;
        padding-top: 56px;
        padding-bottom: 68px;
    }
    .paper { transform: none; max-width: 560px; }
    .dl-grid { grid-template-columns: 1fr; max-width: 460px; }
    .usp-strip { grid-template-columns: 1fr; gap: 28px; max-width: 520px; }
    .steps { grid-template-columns: 1fr; gap: 32px; }
    .thanks-grid, .contact-wrap { grid-template-columns: 1fr; }
    .contact-wrap { gap: 40px; }
    .contact-aside { border-left: none; padding: 0; }
    .slip { grid-template-columns: 1fr; gap: 24px; padding: 26px 28px; }
    .cta-band .container { padding-top: 60px; padding-bottom: 60px; }

    .nav-toggle {
        display: block;
        position: absolute;
        width: 1px;
        height: 1px;
        margin: -1px;
        overflow: hidden;
        clip: rect(0 0 0 0);
        opacity: 0;
        pointer-events: none;
    }
    .nav-burger {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px; height: 40px;
        cursor: pointer;
        border-radius: var(--radius-sm);
        border: 1px solid var(--line-strong);
        background: var(--paper);
    }
    .nav-burger span,
    .nav-burger span::before,
    .nav-burger span::after {
        content: "";
        display: block;
        width: 17px; height: 2px;
        border-radius: 2px;
        background: var(--ink);
        position: relative;
        transition: transform .2s ease, opacity .2s ease;
    }
    .nav-burger span::before { position: absolute; top: -6px; }
    .nav-burger span::after { position: absolute; top: 6px; }

    .nav-toggle:checked + .nav-burger span { transform: rotate(45deg); }
    .nav-toggle:checked + .nav-burger span::before { transform: rotate(-90deg) translateX(-6px); }
    .nav-toggle:checked + .nav-burger span::after { opacity: 0; }

    .site-nav {
        display: none;
        position: absolute;
        top: 64px; left: 0; right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        background: var(--paper);
        border-bottom: 1px solid var(--line);
        padding: 10px 24px 18px;
    }
    .site-nav > a { padding: 12px 2px; border-bottom: 1px solid var(--bg); }
    .site-nav > a.active { border-bottom-color: var(--red); }
    .nav-cta { margin: 14px 0 0; }
    .nav-toggle:checked ~ .site-nav { display: flex; }
    .nav-toggle:focus-visible + .nav-burger { outline: 2px solid var(--red); outline-offset: 3px; }
}

@media (max-width: 640px) {
    .ledger, .scenes { grid-template-columns: 1fr; }
    .ledger-item:nth-child(-n+2) { border-top: 1px solid var(--line-strong); padding-top: 24px; }
    .ledger-item:first-child { border-top: none; padding-top: 0; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }    
    .wechat-card { flex-direction: column; text-align: center; }
    .paper { padding: 20px 18px 18px; }
    .pq-opts { grid-template-columns: 1fr; }
    .compare-table th, .compare-table td { padding: 12px 14px; }
    .table-hint { display: block; }
}