:root {
  color-scheme: light;
  --ink: #152534;
  --muted: #566675;
  --line: #dbe3e9;
  --paper: #ffffff;
  --soft: #f4f8fb;
  --navy: #102f46;
  --blue: #0873a9;
  --blue-soft: #e7f5fb;
  --orange: #b9550b;
  --orange-soft: #fff1e5;
  --shadow-sm: 0 1px 2px rgba(16, 47, 70, .06), 0 4px 12px rgba(16, 47, 70, .07);
  --shadow-md: 0 3px 8px rgba(16, 47, 70, .08), 0 16px 36px rgba(16, 47, 70, .1);
  font-family: system-ui, -apple-system, "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.7;
  color: var(--ink);
  background: var(--paper);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; max-width: none; padding: 0; color: var(--ink); background: linear-gradient(180deg, #f8fbfd 0, var(--paper) 16rem); }
a { color: var(--blue); text-underline-offset: .18em; }
a:hover { text-decoration-thickness: .14em; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 3px solid #f59e0b; outline-offset: 3px; }
.shell { width: min(72rem, calc(100% - 2rem)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 100; left: 1rem; top: 1rem; transform: translateY(-180%); background: #fff; color: #111; padding: .6rem 1rem; border: 2px solid #111; border-radius: .35rem; box-shadow: var(--shadow-sm); }
.skip-link:focus { transform: translateY(0); }

.site-header { position: sticky; z-index: 20; top: 0; width: 100%; margin: 0; border-bottom: 1px solid rgba(216, 226, 234, .85); background: rgba(255,255,255,.88); box-shadow: 0 2px 12px rgba(16, 47, 70, .045); backdrop-filter: blur(14px); }
.header-inner { min-height: 4.5rem; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.site-name { color: var(--navy); font-size: 1.05rem; font-weight: 850; text-decoration: none; letter-spacing: .015em; }
.site-nav { display: flex; gap: 1.25rem; margin: 0; }
.site-nav a { position: relative; color: var(--ink); font-size: .92rem; font-weight: 650; text-decoration: none; }
.site-nav a::after { position: absolute; right: 0; bottom: -.35rem; left: 0; height: 2px; border-radius: 99rem; background: var(--blue); content: ""; transform: scaleX(0); transition: transform .18s ease; }
.site-nav a:hover::after { transform: scaleX(1); }
.site-nav a:hover { color: var(--blue); }

.page-main { padding-block: clamp(2.5rem, 6vw, 5rem); }
.home-hero { position: relative; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(20rem, .85fr); gap: clamp(2rem, 5vw, 5rem); align-items: center; overflow: hidden; padding: clamp(2.5rem, 6vw, 5.25rem) clamp(1.5rem, 5vw, 4.5rem); border: 1px solid #dce9f0; border-radius: 1.5rem; background: radial-gradient(circle at 88% 18%, rgba(8, 115, 169, .13), transparent 28%), linear-gradient(135deg, #f8fcfe 0%, #eef7fb 100%); box-shadow: var(--shadow-sm); }
.home-hero::before { position: absolute; width: 15rem; height: 15rem; border: 1px solid rgba(8, 115, 169, .1); border-radius: 50%; right: -7rem; bottom: -9rem; content: ""; }
.hero-copy { position: relative; z-index: 1; }
.home-hero h1 { max-width: 19ch; margin: .45rem 0 1.25rem; font-feature-settings: "palt"; font-size: clamp(1.9rem, 4.5vw, 3rem); line-height: 1.3; letter-spacing: -.018em; }
.hero-lead { max-width: 38rem; margin: 0; color: var(--muted); font-size: 1.15rem; line-height: 1.8; }
.hero-actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1.75rem; }
.button-link { display: inline-flex; min-height: 3rem; align-items: center; justify-content: center; padding: .7rem 1.15rem; border: 1px solid transparent; border-radius: .55rem; color: #fff; background: var(--navy); box-shadow: 0 2px 5px rgba(16, 47, 70, .16); font: inherit; font-weight: 750; text-decoration: none; cursor: pointer; transition: background-color .18s ease, border-color .18s ease, box-shadow .18s ease, color .18s ease, transform .18s ease; }
.button-link:hover { background: #194865; box-shadow: 0 5px 14px rgba(16, 47, 70, .2); text-decoration: none; transform: translateY(-1px); }
.button-link--secondary { border-color: #a9c1cf; color: var(--navy); background: rgba(255, 255, 255, .75); box-shadow: none; }
.button-link--secondary:hover { border-color: var(--blue); color: var(--blue); background: #fff; box-shadow: 0 3px 10px rgba(16, 47, 70, .08); }
.hero-visual { position: relative; z-index: 1; min-height: 19rem; display: flex; flex-direction: column; justify-content: center; padding: 1.25rem; }
.hero-visual::before { position: absolute; inset: 8% 3%; border: 1px solid rgba(8, 115, 169, .11); border-radius: 50%; background: rgba(255,255,255,.34); content: ""; }
.compatibility-card { position: relative; z-index: 2; display: grid; grid-template-columns: 2.7rem 1fr 2rem; gap: .85rem; align-items: center; width: min(100%, 20rem); padding: 1rem; border: 1px solid rgba(170, 198, 212, .8); border-radius: .9rem; background: rgba(255,255,255,.94); box-shadow: var(--shadow-md); }
.compatibility-card--device { align-self: flex-start; }
.compatibility-card--home { align-self: flex-end; }
.compatibility-card small, .compatibility-card strong { display: block; }
.compatibility-card small { color: var(--muted); font-size: .73rem; font-weight: 700; }
.compatibility-card strong { margin-top: .08rem; color: var(--navy); font-size: .94rem; line-height: 1.4; }
.visual-icon, .article-card__icon { display: inline-flex; align-items: center; justify-content: center; border-radius: .7rem; }
.visual-icon { width: 2.7rem; height: 2.7rem; color: var(--blue); background: var(--blue-soft); }
.visual-icon svg, .article-card__icon svg { width: 1.45rem; height: 1.45rem; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.8; }
.compatibility-card--home .visual-icon { color: var(--orange); background: var(--orange-soft); }
.status-check { display: inline-grid; width: 1.75rem; height: 1.75rem; place-items: center; border-radius: 50%; color: #fff; background: #18855b; font-size: .88rem; font-weight: 900; }
.compatibility-line { position: relative; z-index: 1; width: 52%; height: 2.4rem; margin: -.1rem auto; border-right: 2px dashed rgba(8, 115, 169, .28); transform: rotate(27deg); }
.visual-caption { position: relative; z-index: 2; align-self: center; margin: 1.2rem 0 0; padding: .35rem .7rem; border: 1px solid rgba(170, 198, 212, .7); border-radius: 99rem; color: var(--muted); background: rgba(255,255,255,.8); font-size: .76rem; font-weight: 700; }
.visual-caption span { display: inline-block; width: .45rem; height: .45rem; margin-right: .3rem; border-radius: 50%; background: #18855b; }
.kicker { margin: 0; color: var(--blue); font-size: .78rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.listing-section { margin-top: 1.5rem; padding: clamp(3rem, 6vw, 5rem) clamp(0rem, 2vw, 1.5rem); border-bottom: 1px solid var(--line); scroll-margin-top: 5rem; }
.section-heading { display: grid; grid-template-columns: minmax(13rem, .65fr) 1.35fr; column-gap: 3rem; align-items: end; margin-bottom: 2rem; }
.section-heading .kicker { grid-column: 1 / -1; }
.section-heading h2 { margin: .3rem 0 0; font-size: clamp(1.65rem, 3vw, 1.9rem); line-height: 1.3; letter-spacing: -.012em; }
.section-heading > p:last-child { margin: 0; color: var(--muted); }
.listing-section--aircon { border-radius: 1.25rem; background: linear-gradient(135deg, rgba(255, 241, 229, .55), rgba(255,255,255,0) 55%); }
.listing-section--aircon .kicker, .track-page--aircon > .kicker { color: var(--orange); }
.listing-section--smartphone-carrier .section-heading h2 { text-decoration: underline; text-decoration-color: rgba(8, 115, 169, .28); text-decoration-thickness: .2em; text-underline-offset: .2em; }
.listing-section--aircon .section-heading h2 { text-decoration: underline; text-decoration-color: rgba(185, 85, 11, .27); text-decoration-thickness: .2em; text-underline-offset: .2em; }
.article-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; padding: 0; list-style: none; }
.article-grid li { min-width: 0; border-radius: .85rem; }
.article-grid a { position: relative; display: flex; min-height: 100%; flex-direction: column; gap: .7rem; overflow: hidden; padding: 1.3rem; color: var(--ink); text-decoration: none; border: 1px solid var(--line); border-top: 3px solid var(--blue); border-radius: .85rem; background: #fff; box-shadow: var(--shadow-sm); transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease; }
.article-card--aircon a { border-top-color: var(--orange); }
.article-grid a:hover { border-color: #8fabbc; border-top-color: var(--blue); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.article-card--aircon a:hover { border-top-color: var(--orange); }
.article-grid strong { padding-right: .25rem; font-size: 1.08rem; line-height: 1.5; letter-spacing: -.008em; }
.article-grid a > span:last-child { color: var(--muted); font-size: .9rem; }
.article-card__icon { position: absolute; top: 1.05rem; right: 1.05rem; width: 2.35rem; height: 2.35rem; color: var(--blue); background: var(--blue-soft); }
.article-card--aircon .article-card__icon { color: var(--orange); background: var(--orange-soft); }
.track-tag { width: max-content; padding: .15rem .5rem; border-radius: 99rem; font-size: .72rem; font-weight: 800; }
.track-tag--smartphone-carrier { color: #075f8b; background: var(--blue-soft); }
.track-tag--aircon { color: #99410a; background: var(--orange-soft); }
.editorial-note, .disclosure-box { margin-top: 3rem; padding: 1.5rem; border: 1px solid #f1d5bd; border-left: .35rem solid var(--orange); border-radius: 0 .75rem .75rem 0; background: #fff8f1; box-shadow: var(--shadow-sm); }
.editorial-note h2 { margin-top: 0; }

.compact-page h1, .prose-page h1 { margin: .35rem 0 1rem; font-feature-settings: "palt"; font-size: clamp(1.9rem, 4.5vw, 3rem); line-height: 1.3; letter-spacing: -.018em; }
.page-lead { max-width: 46rem; margin-bottom: 3rem; color: var(--muted); font-size: 1.15rem; }
.track-page { position: relative; }
.track-page::before { position: absolute; z-index: -1; top: 1.5rem; right: 0; left: 0; height: 12rem; border-radius: 1.25rem; background: linear-gradient(135deg, var(--blue-soft), rgba(255,255,255,0) 70%); content: ""; }
.track-page--aircon::before { background: linear-gradient(135deg, var(--orange-soft), rgba(255,255,255,0) 70%); }
.track-page > .kicker, .track-page > h1, .track-page > .page-lead { margin-left: clamp(1rem, 3vw, 2rem); margin-right: clamp(1rem, 3vw, 2rem); }
.track-page > .kicker { padding-top: 1rem; }
.prose-page { max-width: 52rem; }
.prose-page h2 { margin-top: 2.5rem; padding-top: .5rem; border-top: 1px solid var(--line); font-size: 1.3rem; line-height: 1.45; }
.info-list { margin: 2rem 0; border-top: 1px solid var(--line); }
.info-list div { display: grid; grid-template-columns: 9rem 1fr; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--line); }
.info-list dt { font-weight: 800; }
.info-list dd { margin: 0; }
.policy-date, .form-note { color: var(--muted); font-size: .9rem; }
.contact-form { display: grid; gap: 1.25rem; margin-top: 2rem; padding: 1.5rem; border: 1px solid var(--line); border-radius: .75rem; background: var(--soft); box-shadow: var(--shadow-sm); }
.contact-form div { display: grid; gap: .35rem; }
.contact-form label { font-weight: 800; }
.contact-form input, .contact-form textarea { width: 100%; padding: .7rem .8rem; border: 1px solid #9ba8b2; border-radius: .35rem; color: var(--ink); background: #fff; font: inherit; }
.contact-form button { width: max-content; padding: .7rem 1rem; border: 0; border-radius: .45rem; color: #fff; background: var(--navy); font: inherit; font-weight: 750; cursor: pointer; transition: background-color .18s ease, transform .18s ease; }
.contact-form button:hover { background: #194865; transform: translateY(-1px); }
.error-page { min-height: 55vh; text-align: center; }
.error-code { margin: 0; color: var(--blue); font-size: clamp(4rem, 15vw, 9rem); font-weight: 900; line-height: 1; }

.generated-content { width: 100%; overflow-wrap: anywhere; }
.generated-content > main, .generated-content > footer { width: min(72rem, calc(100% - 2rem)); margin-inline: auto; }
.generated-content--aircon { width: min(72rem, calc(100% - 2rem)); margin-inline: auto; padding-block: 1rem; }
.generated-content--aircon > main { width: 100%; }
.generated-content table { max-width: 100%; }
.generated-content a[href=""] { pointer-events: none; }

.site-footer { width: 100%; margin: 0; padding: 3.5rem 0 1.5rem; color: #dbe7ee; background: linear-gradient(135deg, #102f46, #173e58); box-shadow: inset 0 1px rgba(255,255,255,.08); font-size: .9rem; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 3rem; }
.footer-grid > div { max-width: 40rem; }
.footer-title { margin-top: 0; color: #fff; font-size: 1.1rem; font-weight: 800; letter-spacing: .01em; }
.footer-grid nav { display: grid; align-content: start; gap: .5rem; margin: 0; }
.footer-grid a { color: #fff; }
.copyright { margin-top: 2rem; padding-top: 1.25rem; border-top: 1px solid rgba(255,255,255,.2); }

@media (max-width: 48rem) {
  .header-inner { min-height: auto; align-items: flex-start; flex-direction: column; gap: .65rem; padding-block: .8rem; }
  .site-nav { width: 100%; gap: .75rem 1rem; flex-wrap: wrap; }
  .page-main { padding-block: 1.5rem 3rem; }
  .home-hero { grid-template-columns: 1fr; gap: 1.25rem; padding: 2.25rem 1.25rem; border-radius: 1rem; }
  .hero-lead { font-size: 1.05rem; }
  .hero-visual { min-height: auto; padding: .5rem 0 0; }
  .compatibility-card--home, .compatibility-line, .hero-visual::before { display: none; }
  .compatibility-card--device { align-self: stretch; width: 100%; box-shadow: var(--shadow-sm); }
  .visual-caption { margin-top: .75rem; }
  .listing-section { margin-top: .75rem; padding-block: 2.75rem; }
  .section-heading { display: block; }
  .section-heading > p:last-child { margin-top: .75rem; }
  .article-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .info-list div { grid-template-columns: 1fr; gap: .25rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}