:root {
    --ktw-teal: #173f43;
    --ktw-teal-2: #245b60;
    --ktw-cream: #fcf8ed;
    --ktw-paper: #fffdf7;
    --ktw-blue: #d9edf0;
    --ktw-peach: #f6cfbd;
    --ktw-yellow: #f4d56c;
    --ktw-green: #dce8c9;
    --ktw-ink: #173f43;
    --ktw-muted: #49696c;
    --ktw-line: rgba(23, 63, 67, .16);
    --ktw-radius-sm: 16px;
    --ktw-radius: 28px;
    --ktw-radius-lg: 42px;
    --ktw-shadow: 0 18px 44px rgba(23, 63, 67, .10);
    --ktw-shell: 1220px;
    --ktw-font: "Manrope", "Noto Sans TC", system-ui, sans-serif;
}

html { scroll-behavior: smooth; }
body.ktw-site { margin: 0; background: var(--ktw-cream); color: var(--ktw-ink); font-family: var(--ktw-font); font-size: 17px; line-height: 1.68; }
.ktw-site #ast-desktop-header, .ktw-site #ast-mobile-header, .ktw-site .site-footer, .ktw-site .entry-header { display: none !important; }
.ktw-site .site-content > .ast-container, .ktw-site .ast-container, .ktw-site #primary, .ktw-site .site-main, .ktw-site article, .ktw-site .entry-content { width: 100%; max-width: none; margin: 0; padding: 0; }
.ktw-site .entry-content > .elementor { margin: 0; }
.ktw-site .elementor > .e-con, .ktw-site .elementor-widget-shortcode > .elementor-widget-container { width: 100%; max-width: none; margin: 0; padding: 0; }
.ktw-site *, .ktw-site *::before, .ktw-site *::after { box-sizing: border-box; }
.ktw-site h1, .ktw-site h2, .ktw-site h3, .ktw-site h4, .ktw-site p { margin-top: 0; }
.ktw-site h1, .ktw-site h2, .ktw-site h3, .ktw-site h4 { color: inherit; font-family: var(--ktw-font); letter-spacing: -.035em; text-transform: none; }
.ktw-site h1 { max-width: 860px; font-size: clamp(3rem, 6vw, 5.8rem); font-weight: 800; line-height: .99; }
.ktw-site h2 { font-size: clamp(2.1rem, 4vw, 3.75rem); font-weight: 800; line-height: 1.08; }
.ktw-site h3 { font-size: 1.35rem; font-weight: 750; line-height: 1.25; }
.ktw-zh h1 { font-size: clamp(2.8rem, 5.4vw, 5.25rem); line-height: 1.12; letter-spacing: -.055em; }
.ktw-zh h2 { line-height: 1.2; letter-spacing: -.045em; }
.ktw-site a { color: inherit; text-decoration: none; }
.ktw-site a:focus-visible, .ktw-site summary:focus-visible { outline: 3px solid var(--ktw-yellow); outline-offset: 4px; }
.ktw-shell { width: min(calc(100% - 44px), var(--ktw-shell)); margin-inline: auto; }
.ktw-skip { position: fixed; z-index: 99999; top: 12px; left: 12px; padding: 10px 16px; border-radius: 8px; background: var(--ktw-yellow); color: var(--ktw-teal); transform: translateY(-180%); }
.ktw-skip:focus { transform: translateY(0); }

.ktw-header { position: sticky; z-index: 1000; top: 0; border-bottom: 1px solid var(--ktw-line); background: rgba(252, 248, 237, .94); backdrop-filter: blur(16px); }
.admin-bar .ktw-header { top: 32px; }
.ktw-header__inner { display: flex; width: min(calc(100% - 44px), 1380px); min-height: 82px; margin: auto; align-items: center; gap: 26px; }
.ktw-logo { display: inline-flex; align-items: center; gap: 10px; font-size: 1.25rem; font-weight: 800; letter-spacing: -.04em; white-space: nowrap; }
.ktw-logo__mark { display: grid; width: 39px; height: 39px; border-radius: 50% 50% 50% 16%; background: var(--ktw-teal); color: white; place-items: center; }
.ktw-logo--light { color: white; }
.ktw-logo--light .ktw-logo__mark { background: var(--ktw-yellow); color: var(--ktw-teal); }
.ktw-nav { display: flex; margin-left: auto; align-items: center; gap: 24px; font-size: .82rem; font-weight: 700; }
.ktw-nav a { position: relative; padding-block: 8px; }
.ktw-nav a::after { position: absolute; right: 0; bottom: 1px; left: 0; height: 2px; background: var(--ktw-teal); content: ""; transform: scaleX(0); transform-origin: left; transition: transform .2s ease; }
.ktw-nav a:hover::after { transform: scaleX(1); }
.ktw-header__tools { display: flex; align-items: center; gap: 10px; }
.ktw-language { display: grid; min-width: 42px; min-height: 42px; border: 1px solid var(--ktw-line); border-radius: 50%; font-size: .78rem; font-weight: 800; place-items: center; }
.ktw-help { min-width: 126px; padding: 11px 17px; border-radius: 999px; background: var(--ktw-teal); color: #fff !important; font-size: .78rem; font-weight: 750; text-align: center; }
.ktw-mobile-menu { display: none; margin-left: auto; }
.ktw-mobile-menu summary { padding: 10px 14px; border: 1px solid var(--ktw-line); border-radius: 999px; cursor: pointer; font-size: .85rem; font-weight: 800; list-style: none; }
.ktw-mobile-menu summary::-webkit-details-marker { display: none; }
.ktw-mobile-menu__panel { position: absolute; top: 70px; right: 18px; left: 18px; display: grid; padding: 18px; border: 1px solid var(--ktw-line); border-radius: 20px; background: var(--ktw-paper); box-shadow: var(--ktw-shadow); gap: 2px; }
.ktw-mobile-menu__panel a { padding: 11px 12px; border-radius: 10px; font-weight: 700; }
.ktw-mobile-menu__panel a:hover { background: var(--ktw-blue); }

.ktw-main { overflow: hidden; }
.ktw-hero { position: relative; background: var(--ktw-blue); }
.ktw-hero::before { position: absolute; top: 0; right: 7%; width: 230px; height: 110px; border-radius: 0 0 120px 120px; background: rgba(255,255,255,.34); content: ""; }
.ktw-hero__grid { display: grid; min-height: 680px; padding-block: 94px 76px; align-items: center; grid-template-columns: 1.16fr .84fr; gap: 54px; }
.ktw-kicker, .ktw-eyebrow { margin-bottom: 20px; font-size: .76rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.ktw-zh .ktw-kicker, .ktw-zh .ktw-eyebrow { letter-spacing: .12em; }
.ktw-lead { max-width: 730px; color: var(--ktw-muted); font-size: clamp(1.08rem, 1.6vw, 1.3rem); line-height: 1.7; }
.ktw-hero__copy .ktw-lead { max-width: 680px; }
.ktw-hero__copy, .ktw-split > *, .ktw-card, .ktw-article-body { min-width: 0; }
.ktw-actions { display: flex; margin-top: 34px; flex-wrap: wrap; gap: 12px; }
.ktw-button { display: inline-flex; min-height: 52px; padding: 13px 22px; border: 2px solid var(--ktw-teal); border-radius: 999px; align-items: center; justify-content: center; background: var(--ktw-teal); color: white !important; font-size: .9rem; font-weight: 800; transition: transform .2s ease, box-shadow .2s ease; }
.ktw-button:hover { color: white; box-shadow: 0 8px 18px rgba(23,63,67,.16); transform: translateY(-2px); }
.ktw-button--ghost { background: transparent; color: var(--ktw-teal) !important; }
.ktw-button--light { border-color: var(--ktw-yellow); background: var(--ktw-yellow); color: var(--ktw-teal) !important; }
.ktw-hero__art { position: relative; }
.ktw-hero-art { display: block; width: 100%; height: auto; filter: drop-shadow(0 24px 22px rgba(23,63,67,.12)); }

.ktw-section { padding-block: 104px; }
.ktw-section--cream { background: var(--ktw-cream); }
.ktw-section--pale { background: var(--ktw-paper); }
.ktw-section--teal { background: var(--ktw-teal); color: white; }
.ktw-section-heading { max-width: 760px; margin-bottom: 46px; }
.ktw-section-heading--row { display: flex; max-width: none; align-items: end; justify-content: space-between; gap: 28px; }
.ktw-grid { display: grid; gap: 20px; }
.ktw-grid--4 { grid-template-columns: repeat(4, 1fr); }
.ktw-grid--3 { grid-template-columns: repeat(3, 1fr); }
.ktw-card { display: flex; min-height: 340px; padding: 31px; border: 1px solid rgba(23,63,67,.08); border-radius: var(--ktw-radius); flex-direction: column; box-shadow: 0 1px 0 rgba(23,63,67,.05); transition: transform .2s ease, box-shadow .2s ease; }
.ktw-card:hover { box-shadow: var(--ktw-shadow); transform: translateY(-5px); }
.ktw-card h2, .ktw-card h3 { margin-bottom: 14px; }
.ktw-card p:not(.ktw-eyebrow) { color: rgba(23,63,67,.82); }
.ktw-card .ktw-arrow-link { margin-top: auto; }
.ktw-card--blue { background: var(--ktw-blue); }
.ktw-card--peach { background: var(--ktw-peach); }
.ktw-card--green { background: var(--ktw-green); }
.ktw-card--yellow { background: var(--ktw-yellow); }
.ktw-card__number { display: grid; width: 52px; height: 52px; margin-bottom: 42px; border: 2px solid var(--ktw-teal); border-radius: 50%; font-weight: 800; place-items: center; }
.ktw-arrow-link { display: inline-flex; align-items: center; gap: 9px; font-size: .9rem; font-weight: 800; }
.ktw-arrow-link span { font-size: 1.2rem; transition: transform .2s ease; }
.ktw-arrow-link:hover span { transform: translateX(5px); }

.ktw-split { display: grid; align-items: start; grid-template-columns: .85fr 1.15fr; gap: 90px; }
.ktw-section--teal .ktw-lead { color: rgba(255,255,255,.8); }
.ktw-evidence-row { display: grid; margin-top: 64px; grid-template-columns: repeat(3,1fr); gap: 12px; }
.ktw-evidence-row > div { display: grid; min-height: 145px; padding: 24px; border: 1px solid rgba(255,255,255,.2); border-radius: var(--ktw-radius-sm); background: rgba(255,255,255,.07); align-content: space-between; }
.ktw-evidence-row span { color: rgba(255,255,255,.68); font-size: .76rem; font-weight: 750; text-transform: uppercase; }
.ktw-evidence-row strong { font-size: 1.05rem; }
.ktw-symptoms { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.ktw-symptoms > div { padding: 30px; border: 1px solid var(--ktw-line); border-radius: var(--ktw-radius); background: white; }
.ktw-symbol { display: grid; width: 58px; height: 58px; margin-bottom: 30px; border-radius: 20px; background: var(--ktw-blue); font-size: 1.6rem; font-weight: 800; place-items: center; }
.ktw-symptoms > div:nth-child(2) .ktw-symbol { background: var(--ktw-yellow); }
.ktw-symptoms > div:nth-child(3) .ktw-symbol { background: var(--ktw-peach); }
.ktw-symptoms p { color: var(--ktw-muted); }
.ktw-safety { display: grid; padding: 46px; border-radius: var(--ktw-radius-lg); align-items: center; background: var(--ktw-green); grid-template-columns: auto 1fr auto; gap: 30px; }
.ktw-safety__badge { display: grid; width: 86px; height: 86px; border-radius: 50%; background: var(--ktw-teal); color: white; font-size: 2rem; place-items: center; }
.ktw-safety h2 { max-width: 760px; font-size: clamp(1.9rem, 3vw, 3rem); }
.ktw-safety p { max-width: 760px; margin-bottom: 0; }

.ktw-hub-hero { background: var(--ktw-blue); }
.ktw-hub-hero__inner { display: grid; min-height: 520px; padding-block: 110px 92px; align-content: center; }
.ktw-hub-hero h1 { margin-bottom: 28px; }
.ktw-next-step { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.ktw-next-step h2 { max-width: 830px; margin-bottom: 0; }

.ktw-article-hero { padding-block: 104px 88px; background: var(--ktw-peach); }
.ktw-article-shell { width: min(calc(100% - 44px), 940px); margin-inline: auto; }
.ktw-article-hero h1 { max-width: 940px; margin-bottom: 30px; }
.ktw-article-meta { display: flex; margin-top: 34px; flex-wrap: wrap; gap: 9px; }
.ktw-article-meta span { padding: 8px 12px; border: 1px solid rgba(23,63,67,.18); border-radius: 999px; background: rgba(255,255,255,.35); font-size: .75rem; font-weight: 750; }
.ktw-article-layout { display: grid; padding-block: 78px 110px; align-items: start; grid-template-columns: 300px minmax(0, 760px); justify-content: center; gap: 64px; }
.ktw-at-glance { position: sticky; top: 112px; padding: 26px; border-radius: var(--ktw-radius); background: var(--ktw-blue); }
.ktw-at-glance ul { margin: 0; padding-left: 20px; }
.ktw-at-glance li + li { margin-top: 12px; }
.ktw-article-body { min-width: 0; }
.ktw-article-body h2 { margin: 66px 0 22px; font-size: clamp(1.85rem, 3vw, 2.75rem); }
.ktw-article-body h2:first-child { margin-top: 0; }
.ktw-article-body h3 { margin: 42px 0 16px; font-size: 1.5rem; }
.ktw-article-body p, .ktw-article-body li { color: #294f53; font-size: 1.04rem; }
.ktw-evidence-box, .ktw-care-box { margin-block: 44px; padding: 30px; border-radius: var(--ktw-radius); background: var(--ktw-blue); }
.ktw-evidence-box > span { display: block; margin-bottom: 8px; font-size: .72rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.ktw-evidence-box > strong { display: block; margin-bottom: 12px; font-size: 1.4rem; }
.ktw-evidence-box p, .ktw-care-box p { margin-bottom: 0; }
.ktw-care-box { background: var(--ktw-green); }
.ktw-care-box h2 { margin-top: 0; }
.ktw-faq { border-top: 1px solid var(--ktw-line); }
.ktw-faq details { border-bottom: 1px solid var(--ktw-line); }
.ktw-faq summary { position: relative; padding: 20px 42px 20px 0; cursor: pointer; font-weight: 800; list-style: none; }
.ktw-faq summary::-webkit-details-marker { display: none; }
.ktw-faq summary::after { position: absolute; top: 18px; right: 4px; content: "+"; font-size: 1.4rem; }
.ktw-faq details[open] summary::after { content: "−"; }
.ktw-faq details p { padding-right: 32px; }
.ktw-sources { padding-left: 24px; }
.ktw-sources li + li { margin-top: 18px; }
.ktw-sources a { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.ktw-table-wrap { width: 100%; margin-block: 26px 38px; overflow-x: auto; border: 1px solid var(--ktw-line); border-radius: var(--ktw-radius-sm); background: white; }
.ktw-table-wrap table { width: 100%; min-width: 650px; margin: 0; border: 0; border-collapse: collapse; }
.ktw-table-wrap th, .ktw-table-wrap td { padding: 15px 16px; border: 0; border-bottom: 1px solid var(--ktw-line); text-align: left; vertical-align: top; }
.ktw-table-wrap thead th { background: var(--ktw-blue); font-size: .8rem; letter-spacing: .04em; }
.ktw-table-wrap tbody th { width: 22%; font-weight: 800; }
.ktw-table-wrap tbody tr:last-child th, .ktw-table-wrap tbody tr:last-child td { border-bottom: 0; }
.ktw-byline { display: grid; margin-top: 54px; padding-top: 22px; border-top: 1px solid var(--ktw-line); gap: 4px; }
.ktw-byline span { color: var(--ktw-muted); font-size: .82rem; }

.ktw-footer { padding: 78px 0 24px; background: var(--ktw-teal); color: white; }
.ktw-footer__main { display: grid; width: min(calc(100% - 44px), var(--ktw-shell)); margin: auto; grid-template-columns: 1.7fr 1fr 1fr; gap: 70px; }
.ktw-footer__about p { max-width: 420px; margin-top: 24px; color: rgba(255,255,255,.7); }
.ktw-footer h2 { margin-bottom: 18px; color: var(--ktw-yellow); font-size: .8rem; letter-spacing: .13em; text-transform: uppercase; }
.ktw-footer__main > div:not(:first-child) { display: flex; flex-direction: column; align-items: flex-start; gap: 9px; }
.ktw-footer__main a:not(.ktw-logo) { color: rgba(255,255,255,.78); font-size: .9rem; }
.ktw-footer__main a:hover { color: white; }
.ktw-footer__legal { display: flex; width: min(calc(100% - 44px), var(--ktw-shell)); margin: 64px auto 0; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.16); justify-content: space-between; gap: 28px; color: rgba(255,255,255,.62); font-size: .76rem; }
.ktw-footer__legal p { margin: 0; }

@media (max-width: 1120px) {
    .ktw-nav { display: none; }
    .ktw-header__tools { margin-left: auto; }
    .ktw-mobile-menu { display: block; margin-left: 0; }
    .ktw-grid--4 { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 800px) {
    .admin-bar .ktw-header { top: 46px; }
    .ktw-shell { width: min(calc(100% - 30px), var(--ktw-shell)); }
    .ktw-header__inner { width: calc(100% - 28px); min-height: 70px; gap: 10px; }
    .ktw-header__tools { display: none; }
    .ktw-hero__grid, .ktw-split { grid-template-columns: 1fr; }
    .ktw-zh h1, .ktw-zh h2, .ktw-zh h3, .ktw-zh p { max-width: 100%; overflow-wrap: anywhere; word-break: break-word; }
    .ktw-hero__grid { min-height: 0; padding-block: 72px 46px; gap: 20px; }
    .ktw-hero__art { max-width: 440px; margin: auto; }
    .ktw-section { padding-block: 72px; }
    .ktw-grid--3, .ktw-evidence-row, .ktw-symptoms { grid-template-columns: 1fr; }
    .ktw-card { min-height: 290px; }
    .ktw-section-heading--row, .ktw-next-step { align-items: flex-start; flex-direction: column; }
    .ktw-split { gap: 22px; }
    .ktw-safety { padding: 30px; grid-template-columns: 1fr; }
    .ktw-safety__badge { width: 62px; height: 62px; }
    .ktw-footer__main { grid-template-columns: 1fr 1fr; gap: 44px 30px; }
    .ktw-footer__about { grid-column: 1 / -1; }
    .ktw-footer__legal { align-items: flex-start; flex-direction: column; }
    .ktw-article-layout { grid-template-columns: 1fr; gap: 36px; }
    .ktw-at-glance { position: static; }
}

@media (max-width: 540px) {
    .ktw-grid--4 { grid-template-columns: 1fr; }
    .ktw-site h1 { font-size: 2.65rem; }
    .ktw-zh h1 { font-size: 2.5rem; }
    .ktw-card { padding: 26px; }
    .ktw-footer__main { grid-template-columns: 1fr; }
    .ktw-footer__about { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .ktw-card, .ktw-button, .ktw-arrow-link span { transition: none; }
}