:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #252018;
  background: #f5f0e5;
  line-height: 1.7;
  --ink: #252018;
  --orange: #c7462b;
  --action: #a43b27;
  --muted: #6a6155;
  --line: #d4c7b6;
  --paper: #f5f0e5;
}
html:lang(zh-TW) { font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", "Microsoft JhengHei", sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; }
a { color: var(--action); text-underline-offset: 4px; }
a:hover { text-decoration-thickness: 2px; }
img, svg { max-width: 100%; }
img { display: block; height: auto; }
header, main, footer { max-width: 1280px; padding: 24px 48px; margin: 0 auto; }
header { display: flex; align-items: center; gap: 24px; min-height: 72px; padding-top: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-family: Georgia, "Songti SC", serif; font-size: 25px; font-weight: 700; letter-spacing: -.02em; text-decoration: none; white-space: nowrap; }
.brand-mark { width: 35px; height: 35px; flex-shrink: 0; object-fit: contain; }
nav { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 26px; margin-left: auto; }
nav a { display: inline-flex; align-items: center; min-height: 44px; color: var(--ink); font-size: 14px; font-weight: 600; text-decoration: none; }
nav a:hover { color: var(--action); }
nav .nav-cta { padding: 7px 17px; border: 1px solid var(--action); border-radius: 4px; background: transparent; color: var(--action); }
.language-switch { position: relative; flex-shrink: 0; border: 0; padding: 0; }
.language-switch summary { display: grid; place-items: center; width: 44px; height: 44px; padding: 0; list-style: none; border-radius: 8px; color: var(--muted); }
.language-switch summary::-webkit-details-marker { display: none; }
.language-switch summary::marker { content: ""; }
.language-switch summary:hover, .language-switch[open] summary { background: #fff0e7; color: var(--action); }
.language-switch summary::after { display: none; }
.language-switch svg { width: 20px; height: 20px; }
.language-menu { position: absolute; z-index: 5; top: calc(100% + 8px); right: 0; width: 164px; padding: 6px; background: var(--paper); border: 1px solid #887561; border-radius: 4px; box-shadow: 0 8px 24px #25201812; }
.language-menu a { display: flex; align-items: center; gap: 12px; min-height: 44px; padding: 0 12px; border-radius: 4px; font-size: 14px; text-decoration: none; color: var(--ink); }
.language-menu a:hover { background: #fff0e7; }
.language-menu a[aria-current="true"] { font-weight: 700; }
.language-menu a[aria-current="true"]::after { content: "✓"; margin-left: auto; }
.skip { position: absolute; z-index: 10; left: 16px; top: -100px; background: white; padding: 12px; }
.skip:focus { top: 12px; }
:focus-visible { outline: 3px solid var(--action); outline-offset: 4px; }
main { min-height: 70vh; }
h1, h2, h3, p, figure { margin-top: 0; }
h1, h2, h3 { font-family: "Songti SC", "Songti TC", STSong, Georgia, serif; font-weight: 700; line-height: 1.3; letter-spacing: -.01em; text-wrap: balance; }
h1 { font-size: clamp(2rem, 4vw, 2.75rem); margin-bottom: 24px; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 20px; }
h3 { font-size: 1.375rem; margin-bottom: 12px; }
p { margin-bottom: 18px; }
.muted, .lead { color: var(--muted); }
.lead { font-size: 18px; max-width: 580px; }
.small { font-size: 14px; }
.feedback-form textarea { display: block; width: 100%; padding: 12px; border: 1px solid #887561; border-radius: 4px; background: var(--paper); color: var(--ink); font: inherit; resize: vertical; }
.feedback-content { white-space: pre-wrap; overflow-wrap: anywhere; }
.eyebrow { color: var(--action); font-size: 13px; letter-spacing: .04em; font-weight: 700; margin-bottom: 18px; }
.no-wrap { white-space: nowrap; }
.actions { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin: 26px 0 16px; }
.button, button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 20px; border: 1px solid var(--action); border-radius: 4px; background: var(--action); color: #fffdf8; font: inherit; font-size: .9375rem; font-weight: 600; text-decoration: none; cursor: pointer; }
button { margin-top: 16px; }
.button:hover, button:hover { background: #873020; border-color: #873020; color: #fffdf8; text-decoration: none; }
.button.secondary, button.secondary { border-color: var(--action); background: transparent; color: var(--action); }
.button.secondary:hover, button.secondary:hover { background: #ede4d6; }
button:disabled { border-color: var(--line); background: #eeece6; color: var(--muted); cursor: not-allowed; }
button.danger { background: #ae3026; color: #fff; }
.hero { display: grid; grid-template-columns: 1.05fr 1fr; gap: 32px; align-items: center; min-height: 560px; padding: 52px 0; }
.hero h1 { font-size: clamp(2.5rem, 4.7vw, 3.75rem); line-height: 1.25; font-weight: 700; letter-spacing: -.02em; margin-bottom: 25px; }
.hero h1 span { color: var(--action); }
.hero .lead { max-width: 500px; }
.hero .eyebrow { display: inline-block; position: relative; color: var(--ink); }
.hero .eyebrow::after { content: ""; position: absolute; left: 0; bottom: -7px; width: 40px; border-bottom: 1px solid var(--orange); }
.hero-art { position: relative; margin: 0; min-width: 0; }
.hero-art img { width: 100%; }
.archive-label { position: absolute; top: 3%; right: 2%; padding: 12px 18px; border: 1px solid var(--line); border-radius: 2px; background: var(--paper); }
.archive-label strong { display: block; color: var(--action); font-size: 40px; font-weight: 850; line-height: 1.05; letter-spacing: -.05em; }
.archive-label span { font-size: 13px; font-weight: 650; }
.hero-art figcaption { text-align: right; font-size: 14px; color: var(--muted); margin-top: 12px; }
.section { padding: 76px 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-heading { max-width: 760px; margin-bottom: 34px; }
.section-heading p:last-child { margin-bottom: 0; }
.value-section { display: grid; grid-template-columns: .85fr 1fr; gap: 50px; align-items: center; padding-top: 40px; padding-bottom: 60px; border-top: 2px solid var(--orange); }
.value-section .section-heading { margin-bottom: 0; }
.knowledge-route { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; gap: 15px; text-align: center; }
.knowledge-route strong { display: block; font-size: 15px; margin-top: 12px; }
.knowledge-route small { color: var(--muted); font-size: 13px; }
.route-symbol { display: grid; place-items: center; width: 54px; height: 48px; margin: 0 auto; color: var(--ink); font-size: 21px; font-weight: 700; }
.route-symbol.mcp img { width: 38px; height: 38px; object-fit: contain; }
.route-arrow { color: var(--action); font-size: 28px; }
.route-caption { grid-column: 1 / -1; margin: 14px 0 0; font-size: 14px; color: var(--muted); }
.question { display: inline-flex; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--orange); font-size: 18px; font-weight: 600; margin-bottom: 30px; }
.question span { color: var(--action); font-size: 23px; }
.features, .steps, .scenarios { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px; }
.features article { padding: 26px 0 0; border-top: 2px solid var(--ink); }
.features p, .steps p, .scenarios p { color: var(--muted); }
.step-number { display: block; font-size: 14px; color: var(--action); font-weight: 700; margin-bottom: 16px; font-variant-numeric: tabular-nums; }
.scenarios article { position: relative; padding: 26px 0; border-top: 1px solid var(--line); }
.scenario-icon { font-size: 30px; font-weight: 800; color: var(--action); display: block; margin-bottom: 18px; }
.scenarios p { font-size: 15px; margin: 0; }
.steps article { padding-top: 20px; border-top: 1px solid var(--orange); }
.card { padding: 28px 0; margin: 24px 0; border: 0; border-top: 1px solid var(--line); background: transparent; border-radius: 0; }
.skill-card { display: flex; justify-content: space-between; align-items: center; gap: 30px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.skill-card p { margin-bottom: 0; }
.skill-card .actions { flex-shrink: 0; margin: 0; }
.plans { width: 100%; }
.plan { display: grid; grid-template-columns: minmax(140px, .6fr) minmax(180px, 1fr) minmax(450px, 1.6fr); align-items: center; gap: 28px; padding: 28px 0; border-top: 1px solid var(--orange); border-bottom: 1px solid var(--orange); }
.plan h3 { margin-bottom: 8px; }
.price { display: flex; align-items: baseline; flex-wrap: wrap; gap: 8px; margin: 8px 0 0; font-variant-numeric: tabular-nums; }
.price strong { font-family: Georgia, "Songti SC", serif; font-size: 2.5rem; font-weight: 700; color: var(--action); line-height: 1.15; }
.price span { font-size: 14px; color: var(--muted); }
.plan ul { list-style: none; margin: 0 0 24px; padding: 20px 0 0; border-top: 1px solid var(--line); }
.plan li { padding: 7px 0; font-size: 16px; }
.plan li::before { content: "✓"; color: var(--action); margin-right: 10px; }
.plan button, .plan > .button { width: 100%; margin-top: 0; }
.plan-note { color: var(--muted); font-size: 14px; max-width: 780px; margin-top: 24px; }
.plan-section { display: block; }
.plan-section .plan-note { grid-column: 2; margin-top: 0; }
.pricing-layout { display: block; }
.pricing-layout .section-heading { max-width: 760px; margin-bottom: 36px; }
.pricing-layout .plan-note { grid-column: 2; }
.pricing-art { max-width: 360px; margin-top: 40px; }
details { padding: 20px 0; border-bottom: 1px solid var(--line); }
summary { position: relative; cursor: pointer; font-weight: 650; min-height: 44px; display: flex; align-items: center; padding-right: 32px; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 6px; font-size: 23px; font-weight: 400; color: var(--action); }
details[open] > summary::after { content: "−"; }
details p { color: var(--muted); margin: 16px 0 0; max-width: 800px; }
.faq-layout { display: grid; grid-template-columns: .55fr 1fr; gap: 60px; }
.closing { display: flex; align-items: center; justify-content: space-between; gap: 40px; margin: 36px 0 50px; padding: 40px 0; border-top: 1px solid var(--orange); border-bottom: 1px solid var(--line); }
.closing h2 { margin: 0; font-size: clamp(27px, 3vw, 37px); max-width: 640px; }
.closing .button { flex-shrink: 0; }
.closing p { margin: 12px 0 0; font-size: 14px; }
.auth-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; max-width: 1060px; margin: 65px auto 80px; align-items: center; }
.auth-aside h2 { font-size: 37px; line-height: 1.35; }
.auth-aside img { max-width: 400px; margin: 24px 0; }
.auth-aside .eyebrow { color: var(--ink); }
.form-card { max-width: 520px; margin: 0; width: 100%; border-top: 1px solid var(--orange); padding: 32px 0; }
.form-card h1 { font-size: 31px; }
.form-card button { width: 100%; }
label { display: block; font-size: 15px; font-weight: 600; margin: 20px 0 8px; }
input, select { width: 100%; max-width: 36rem; min-height: 48px; padding: 11px 13px; border: 1px solid #887561; border-radius: 4px; background: #fffdf8; color: var(--ink); font: inherit; font-size: 1rem; }
input[type="checkbox"] { flex-shrink: 0; width: 19px; height: 19px; min-height: 19px; margin: 4px 0 0; accent-color: var(--action); }
.checkbox { display: flex; align-items: start; gap: 11px; font-size: 14px; font-weight: 400; }
.form-links { font-size: 14px; margin: 25px 0 0; }
.error { background: #fff1ed; color: #a12b20; border: 1px solid #e3b2a9; border-left: 4px solid #ae3026; padding: 15px 18px; border-radius: 5px; }
.success { background: #f0f6ef; color: #315638; border: 1px solid #cadaca; border-left: 4px solid #497952; padding: 15px 18px; border-radius: 5px; }
.prose { max-width: 860px; margin: 40px auto 65px; padding: 36px 0; border: 0; border-top: 1px solid var(--orange); }
.prose h1 { font-size: clamp(31px, 3.4vw, 43px); }
.prose h2 { margin-top: 36px; font-size: 23px; }
.prose p, .prose li { font-size: 16px; }
.prose li { margin-bottom: 10px; }
code, pre { white-space: pre-wrap; overflow-wrap: anywhere; font-size: 14px; }
pre { padding: 18px 20px; border: 1px solid var(--line); border-radius: 4px; background: #eee6d9; line-height: 1.7; }
.setup-nav { display: flex; flex-wrap: wrap; gap: 8px; margin: 25px 0 30px; padding: 0 0 24px; border-bottom: 1px solid var(--line); }
.setup-nav a { padding: 6px 13px; border: 1px solid #887561; border-radius: 4px; font-size: .875rem; color: var(--ink); text-decoration: none; }
.setup-nav a:hover { border-color: var(--action); background: #fff0e7; }
.setup-prompt { margin-top: 28px; }
.client-guide > summary { font-size: 22px; min-height: 56px; }
.client-guide:target > summary { color: var(--action); }
.guide-body { padding: 15px 0 12px; }
.account-offer { min-width: 0; scroll-margin-top: 24px; }
.quota strong { font-size: 1.625rem; color: var(--ink); font-variant-numeric: tabular-nums; line-height: 1.2; }
.account-email { overflow-wrap: anywhere; }
.key { display: grid; gap: 8px; margin-top: 25px; padding-top: 25px; border-top: 1px solid var(--line); overflow-wrap: anywhere; }
.key p { margin: 0; }
.key form { max-width: 620px; }
.secret-value { padding: 20px; border: 1px solid var(--line); background: #f6f5ef; overflow-wrap: anywhere; }
footer { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; padding-top: 30px; padding-bottom: 36px; }
footer p { margin: 8px 0 0; }
footer .brand { font-size: 20px; }
footer .brand-mark { width: 29px; height: 29px; }
footer a:not(.brand) { display: inline-block; padding: 10px 0; margin-left: 20px; color: var(--muted); }

.plan-benefits p { margin: 0 0 6px; }
.purchase-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; align-items: start; }
.purchase-actions > :only-child { grid-column: 1 / -1; }
.purchase-choice, .purchase-choice form { min-width: 0; }
.purchase-choice .button, .purchase-choice button { width: 100%; white-space: normal; }
.purchase-choice p, .purchase-choice .checkbox { margin: 12px 0 0; font-size: .875rem; }
.subscription-quote { font-variant-numeric: tabular-nums; }
.account-page { padding-top: 8px; }
.account-summary { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr) auto; gap: 36px; align-items: center; padding: 8px 0 24px; }
.account-summary p { margin-bottom: 0; }
.account-identity { min-width: 0; padding-right: 28px; border-right: 1px solid var(--line); }
.account-email { font-size: 1.125rem; }
.account-state { color: #315638; font-size: .875rem; margin-top: 8px; }
.account-usage { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 8px 28px; align-items: center; }
.account-usage h2 { font-size: 1.375rem; margin: 0; }
.account-usage .usage-note { grid-column: 1 / -1; }
.quota-balances { grid-column: 1 / -1; margin: 4px 0 0; }
.quota-balances > div { display: flex; justify-content: space-between; gap: 20px; padding: 10px 0; border-top: 1px solid var(--line); }
.quota-balances dt { min-width: 0; }
.quota-balances dt span { display: block; }
.quota-balances dd { margin: 0; white-space: nowrap; }
.account-links { display: grid; gap: 4px; border-left: 1px solid var(--line); padding-left: 28px; font-size: .9375rem; }
.account-links a { padding: 8px 0; color: var(--ink); }
.quota { font-size: .9375rem; font-variant-numeric: tabular-nums; }
meter { width: 100%; height: 10px; display: block; margin-top: 8px; accent-color: var(--action); }
meter::-webkit-meter-bar { border: 0; background: #ded4c4; border-radius: 6px; }
meter::-webkit-meter-optimum-value { background: var(--action); border-radius: 6px; }
meter::-moz-meter-bar { background: var(--action); }
.account-ledger h2 { font-size: 1.5rem; margin-bottom: 12px; }
.account-page > h1 { margin-bottom: 16px; }
.account-page .plan-note { margin: 14px 0 0; }
.account-ledger { margin: 20px 0; padding: 16px 0; }
.ledger-table { width: 100%; border-collapse: collapse; table-layout: fixed; font-size: .9375rem; }
.ledger-table th { font-weight: 400; font-size: .875rem; color: var(--muted); }
.ledger-table th, .ledger-table td { text-align: start; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; overflow-wrap: anywhere; }
.ledger-table th:first-child, .ledger-table td:first-child { padding-left: 0; }
.ledger-table th:last-child, .ledger-table td:last-child { padding-right: 0; }
.ledger-table small { display: block; margin-top: 4px; font-size: .8125rem; }
.ledger-table code { font-size: .875rem; }
.key-table { font-variant-numeric: tabular-nums; }
.key-table th:last-child { width: 190px; }
.key-actions { display: flex; flex-wrap: wrap; gap: 4px 16px; }
.text-button { padding: 8px 0; margin-top: 0; border: 0; border-radius: 0; background: transparent; color: var(--action); text-decoration: underline; text-underline-offset: 4px; font-weight: 400; }
.text-button:hover { background: transparent; color: #873020; }
.text-button.danger { background: transparent; color: #9f2923; }
.text-button.danger:hover { color: #7e211c; }
.account-links .text-button { color: var(--ink); }
.ledger-heading { display: flex; align-items: start; justify-content: space-between; flex-wrap: wrap; gap: 16px; margin-bottom: 12px; }
.ledger-heading h2 { margin: 0; }
.key-create { margin: 0; padding: 0; border: 0; }
.key-create[open] { width: min(620px, 100%); }
.key-create > summary { width: max-content; max-width: 100%; margin-left: auto; padding: 8px 16px; border: 1px solid var(--action); border-radius: 4px; color: var(--action); font-size: .9375rem; font-weight: 500; gap: 6px; }
.key-create > summary::after { display: none; }
.key-create-form { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px 12px; max-width: 620px; margin-top: 24px; }
.key-create-form label { grid-column: 1 / -1; margin: 0; }
.key-create-form button { margin: 0; }
@media (max-width: 1100px) {
 .plan { grid-template-columns: minmax(0, .6fr) minmax(0, 1fr); gap: 20px; }
 .purchase-actions { grid-column: 1 / -1; }
 .account-summary { gap: 24px; }
 .account-usage { grid-template-columns: 1fr; }
 .account-identity { padding-right: 20px; }
 .account-links { padding-left: 20px; }
}
@media (max-width: 720px) {
 .account-summary { grid-template-columns: 1fr; gap: 20px; padding: 8px 0 24px; }
 .account-identity, .account-links { padding: 0; border: 0; }
 .account-usage { grid-template-columns: auto minmax(0, 1fr); }
 .account-links { display: flex; gap: 24px; }
 .account-page { padding-top: 8px; }
 .account-page > h1 { font-size: 2rem; }
 .key-create { margin: 0 0 20px; }
 .ledger-table thead { position: absolute; width: 1px; height: 1px; clip-path: inset(50%); overflow: hidden; }
 .ledger-table, .ledger-table tbody { display: block; }
 .ledger-table tr { display: block; padding: 12px 0; border-bottom: 1px solid var(--line); }
 .ledger-table td { display: grid; grid-template-columns: 100px minmax(0, 1fr); gap: 12px; border: 0; padding: 6px 0; }
 .ledger-table td::before { content: attr(data-label); color: var(--muted); font-size: .875rem; }
 .ledger-table td > small { grid-column: 2; }
 .key-create-form { grid-template-columns: 1fr; }
 .key-actions { gap: 4px 16px; }
}
@media (max-width: 480px) {
 .purchase-actions { grid-template-columns: 1fr; }
 .plan { grid-template-columns: 1fr; }
 .account-usage { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: no-preference) {
  .button, button, input, .setup-nav a { transition: background-color 150ms ease-out, border-color 150ms ease-out, transform 150ms ease-out; }
  .button:active, button:active:not(:disabled) { transform: scale(.96); }
  summary { transition: color 150ms ease-out, background-color 150ms ease-out; }
  .hero-copy, .hero-art { animation: note-in 460ms ease-out both; }
  .hero-art { animation-delay: 90ms; }
  @keyframes note-in { from { opacity: 0; transform: translateY(7px); } to { opacity: 1; transform: translateY(0); } }
}
@media (min-width: 1100px) {
  .landing-page .hero { min-height: 540px; padding: 36px 0 32px; }
  .landing-page .section { padding: 56px 0; }
  .landing-page .section-heading { margin-bottom: 26px; }
  .landing-page .value-section { padding: 32px 0 40px; }
  .landing-page .value-section .section-heading { margin-bottom: 0; }
  .landing-page .skill-card { margin: 24px 0; padding-top: 28px; padding-bottom: 28px; }
  .landing-page .faq-layout details { padding: 16px 0; }
  .landing-page .closing { margin: 24px 0 36px; padding-top: 36px; padding-bottom: 36px; }
}
@media (max-width: 1000px) {
  header, main, footer { padding-left: 28px; padding-right: 28px; }
  header { flex-wrap: wrap; gap: 12px; }
  nav { order: 2; flex-basis: 100%; margin-left: 0; gap: 6px 24px; }
  .language-switch { margin-left: auto; }
  .hero { min-height: 560px; padding-top: 45px; }
  .hero h1 { font-size: 50px; }
  .archive-label { padding: 10px 14px; }
  .archive-label strong { font-size: 30px; }
  .value-section, .plan-section, .pricing-layout, .faq-layout { gap: 30px; }
  .features, .steps, .scenarios { gap: 22px; }
  .skill-card { display: block; }
  .skill-card .actions { margin-top: 20px; }
  .auth-layout { gap: 40px; }
}
@media (max-width: 720px) {
  header, main, footer { padding-left: 20px; padding-right: 20px; }
  header { min-height: auto; padding-top: 18px; padding-bottom: 14px; }
  .brand { font-size: 22px; }
  nav { gap: 4px 19px; }
  nav a { font-size: 13px; }
  nav .nav-cta { padding: 5px 11px; }
  .hero { grid-template-columns: 1fr; gap: 25px; padding: 38px 0 40px; min-height: auto; }
  .hero h1 { font-size: clamp(40px, 9.5vw, 58px); }
  .hero .lead { font-size: 17px; }
  .hero-art { max-width: 480px; margin: 0 auto; }
  .hero-art figcaption { text-align: center; }
  .archive-label { right: 3%; }
  .section { padding: 45px 0; }
  .value-section, .plan-section, .pricing-layout, .faq-layout { grid-template-columns: 1fr; gap: 26px; }
  .knowledge-route { gap: 8px; }
  .knowledge-route strong { font-size: 13px; }
  .knowledge-route small { font-size: 12px; }
  .route-symbol { width: 46px; height: 42px; font-size: 18px; }
  .route-arrow { font-size: 22px; }
  .features, .steps, .scenarios { grid-template-columns: 1fr; gap: 25px; }
  .features article { padding-top: 22px; }
  .scenarios article { padding: 24px 0; }
  .scenario-icon { position: absolute; right: 24px; top: 20px; font-size: 25px; }
  .plan-section .plan-note, .pricing-layout .plan-note { grid-column: 1; }
  .plan-section .section-heading { margin-bottom: 0; }
  .pricing-layout .section-heading { position: static; }
  .pricing-art { display: none; }
  .plan, .card { padding: 24px 0; }
  .price strong { font-size: 2.25rem; }
  .plan li { font-size: 15px; }
  .question { font-size: 16px; padding: 10px 14px; }
  .closing { display: block; padding: 32px 0; margin: 20px 0 35px; }
  .closing .button { margin-top: 25px; }
  .auth-layout { display: block; margin: 30px auto 45px; max-width: 520px; }
  .auth-aside { display: none; }
  .form-card { max-width: none; }
  .prose { margin-top: 25px; padding: 27px 0; }
  .prose h2 { font-size: 22px; }
  .faq-layout .section-heading { margin-bottom: 0; }
  footer { display: block; }
  footer div + div { margin-top: 15px; }
  footer a:not(.brand) { margin: 0 20px 0 0; }
}

/* Keep the native hidden state effective for the setup picker and guides. */
[hidden] { display: none !important; }
.setup-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.setup-fields select { width: 100%; padding: .8rem; font: inherit; color: var(--ink); background: var(--paper); border: 1px solid var(--line); border-radius: 4px; }
.answer-example { max-width: 850px; }
.answer-example .guide-body { padding-bottom: 1.5rem; }
@media (max-width: 600px) { .setup-fields { grid-template-columns: 1fr; } }

.purchase-choice > p:first-child { min-height: 3.4em; margin: 0 0 8px; }
@media (max-width: 600px) { .purchase-choice > p:first-child { min-height: 0; } }