:root {
  --paper: #fdfbf7;
  --paper-deep: #f3efe5;
  --ink: #183b38;
  --muted: #5c7370;
  --green: #4eb78e;
  --green-deep: #26765a;
  --green-pale: #dff2e8;
  --sky: #7bc4e6;
  --sky-pale: #e2f4fc;
  --amber: #f1a83a;
  --amber-deep: #a76113;
  --line: rgba(31, 92, 74, .16);
  --shadow: 0 16px 45px rgba(38, 85, 74, .12);
  --shell: min(1180px, calc(100% - 48px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  color: var(--ink);
  background: radial-gradient(circle at 10% 0%, rgba(123,196,230,.1), transparent 28rem), var(--paper);
  font-family: "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
button, summary, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, summary:focus-visible, a:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }
p, h1, h2, h3, ul, ol, figure { margin-top: 0; }
h1, h2, h3 { line-height: 1.22; }
h2 { font-size: clamp(1.5rem, 2.8vw, 2.35rem); letter-spacing: 0; }
h3 { font-size: 1.14rem; }
.icon-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.icon { display: inline-block; width: 1.05em; height: 1.05em; flex: 0 0 auto; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; vertical-align: -.15em; }
.shell { width: var(--shell); margin-inline: auto; }
.skip-link {
  position: fixed; z-index: 100; top: -70px; left: 16px; padding: 8px 14px;
  background: var(--amber); color: #17322e; border-radius: 999px; font-weight: 800;
}
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky; z-index: 20; top: 0; backdrop-filter: blur(13px);
  background: rgba(253, 251, 247, .9); border-bottom: 1px solid rgba(38, 118, 90, .11);
}
.header-inner { display: flex; min-height: 74px; align-items: center; justify-content: space-between; gap: 22px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--green-deep); font-size: .94rem; font-weight: 800; white-space: nowrap; }
.brand img { width: 44px; height: 44px; border: 2px solid var(--green); border-radius: 50%; object-fit: cover; }
.brand img { transition: transform .35s ease, box-shadow .35s ease; }
.brand:hover img, .brand:focus-visible img { transform: rotate(-6deg) scale(1.06); box-shadow: 0 5px 14px rgba(38,118,90,.2); }
.brand b { color: var(--amber-deep); font-weight: 800; }
.site-nav { display: flex; align-items: center; gap: clamp(8px, 1vw, 15px); font-size: .88rem; font-weight: 700; }
.site-nav > a { display: inline-flex; align-items: center; gap: 5px; }
.site-nav > a:not(.nav-cta) { position: relative; padding: 7px 12px; border: 1px solid transparent; border-radius: 999px; color: #355d56; transition: color .22s ease, border-color .22s ease, background .22s ease, box-shadow .22s ease; }
.site-nav .icon { width: .98em; height: .98em; color: var(--green-deep); }
.site-nav > a:not(.nav-cta):hover, .site-nav > a:not(.nav-cta):focus-visible { border-color: var(--amber); background: rgba(241,168,58,.08); color: var(--amber-deep); box-shadow: 0 0 0 2px rgba(241,168,58,.12), 0 5px 14px rgba(71,48,12,.1); }
.site-nav > a:not(.nav-cta):hover .icon, .site-nav > a:not(.nav-cta):focus-visible .icon { color: var(--amber-deep); }
.nav-cta { padding: 8px 16px; border-radius: 999px; background: var(--amber); color: #47300c; transition: transform .2s ease, box-shadow .2s ease; }
.nav-cta .icon { color: inherit; }
.nav-cta:hover, .nav-cta:focus-visible { box-shadow: 0 7px 16px rgba(71,48,12,.2); transform: translateY(-2px); }
.menu-toggle { display: none; border: 0; border-radius: 999px; background: transparent; cursor: pointer; transition: background .2s ease, color .2s ease; }
.menu-toggle:hover, .menu-toggle:focus-visible { background: rgba(241,168,58,.12); color: var(--amber-deep); }
.menu-toggle .icon { width: 24px; height: 24px; }

.hero { position: relative; min-height: min(725px, calc(100svh - 74px)); overflow: hidden; color: #fff; isolation: isolate; }
.hero-backdrop { position: absolute; z-index: -3; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 23%; }
.hero-backdrop { animation: hero-drift 18s ease-in-out infinite alternate; }
.hero-shade { position: absolute; z-index: -2; inset: 0; background: linear-gradient(90deg, rgba(11, 48, 43, .92) 0%, rgba(16, 86, 69, .76) 45%, rgba(22, 76, 86, .26) 100%); }
.hero::after {
  position: absolute; z-index: -1; inset: auto 0 0; height: 190px; content: "";
  background: linear-gradient(transparent, rgba(10, 54, 44, .68));
}
.hero-inner { display: flex; min-height: inherit; padding: clamp(80px, 12vw, 150px) 0 92px; flex-direction: column; align-items: flex-start; justify-content: center; }
.eyebrow, .section-kicker { margin-bottom: 13px; color: var(--amber-deep); font-family: Georgia, serif; font-size: .73rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.eyebrow { color: #ffe3a5; }
.hero h1 { max-width: 850px; margin-bottom: 18px; font-family: Georgia, "Noto Serif SC", serif; font-size: clamp(2.5rem, 5.7vw, 5.1rem); font-weight: 700; letter-spacing: 0; text-shadow: 0 4px 22px rgba(0, 0, 0, .19); }
.hero h1 span { display: block; color: #c4f0dc; font-size: .46em; line-height: 1.15; }
.hero-copy { max-width: 620px; margin-bottom: 28px; font-size: clamp(1.02rem, 2vw, 1.23rem); line-height: 1.85; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button {
  display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: 9px; padding: 10px 20px;
  border: 1px solid transparent; border-radius: 999px; font-weight: 800; transition: transform .2s ease, background .2s ease, border-color .2s ease;
}
.button .icon { width: 18px; height: 18px; }
.button:hover, .button:focus-visible { transform: translateY(-2px); box-shadow: 0 9px 22px rgba(38,85,74,.16); }
.button:active { transform: translateY(0) scale(.98); }
.button-primary { background: var(--amber); color: #382606; box-shadow: 0 6px 18px rgba(88, 52, 3, .22); }
.button-primary:hover, .button-primary:focus-visible { background: #ffc563; }
.button-secondary { border-color: rgba(255, 255, 255, .64); background: rgba(255, 255, 255, .09); color: #fff; }
.button-secondary:hover, .button-secondary:focus-visible { background: rgba(255, 255, 255, .2); }
.hero-facts { display: flex; gap: 0; margin: 48px 0 0; padding: 0; list-style: none; }
.hero-facts li { display: grid; gap: 2px; padding: 0 25px; border-left: 1px solid rgba(255,255,255,.4); }
.hero-facts li:first-child { padding-left: 0; border-left: 0; }
.hero-facts strong { color: #fff9e4; font-size: 1.2rem; }
.hero-facts span { color: rgba(255,255,255,.78); font-size: .8rem; }
.scroll-prompt { position: absolute; right: max(24px, calc((100vw - 1180px) / 2)); bottom: 30px; display: inline-flex; align-items: center; gap: 8px; font-size: .82rem; font-weight: 700; }
.scroll-prompt .icon { color: #ffe0a0; font-size: 1.1rem; }

.section { padding: clamp(74px, 10vw, 132px) 0; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 48px; margin-bottom: 48px; }
.section-heading h2 { max-width: 730px; margin-bottom: 0; color: var(--green-deep); }
.section-heading > p { max-width: 388px; margin: 0; color: var(--muted); font-size: .94rem; }
.split-layout { display: grid; grid-template-columns: minmax(0, .98fr) minmax(360px, .9fr); align-items: center; gap: clamp(42px, 7vw, 102px); }
.section-copy h2 { margin-bottom: 24px; color: var(--green-deep); }
.section-copy p { color: var(--muted); }
.callout { display: flex; align-items: flex-start; gap: 14px; margin-top: 28px; padding: 16px; border-left: 4px solid var(--amber); background: #fff7e9; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.callout:hover { border-color: var(--green); box-shadow: 0 10px 22px rgba(38,85,74,.1); transform: translateX(4px); }
.callout-icon { display: grid; width: 34px; height: 34px; flex: 0 0 34px; place-items: center; border-radius: 50%; background: var(--amber); color: #513200; font-size: 1.28rem; font-weight: 800; }
.callout p { margin: 0; font-size: .92rem; line-height: 1.7; }
.callout strong { color: var(--ink); }
.image-frame { margin: 0; overflow: hidden; border: 8px solid #fff; box-shadow: var(--shadow); transform: rotate(1.6deg); transition: transform .35s ease, box-shadow .35s ease; }
.image-frame img { width: 100%; aspect-ratio: 2.1 / 1; object-fit: cover; transition: transform .55s ease, filter .35s ease; }
.image-frame:hover, .image-frame:focus-within { transform: rotate(0) translateY(-5px); box-shadow: 0 22px 48px rgba(38,85,74,.18); }
.image-frame:hover img, .image-frame:focus-within img { transform: scale(1.045); filter: saturate(1.06); }
figcaption { padding: 10px 13px; background: #fff; color: var(--muted); font-size: .75rem; line-height: 1.55; }

.content-section { background: var(--paper-deep); }
.content-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.content-card { position: relative; min-height: 220px; overflow: hidden; padding: 25px; border: 1px solid rgba(78, 183, 142, .22); background: rgba(255,255,255,.73); transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease; }
.content-card::after { position: absolute; top: -70%; left: -35%; width: 42%; height: 220%; background: linear-gradient(90deg, transparent, rgba(255,255,255,.5), transparent); content: ""; transform: rotate(22deg) translateX(-160%); transition: transform .65s ease; pointer-events: none; }
.content-card:hover, .content-card:focus-within { border-color: rgba(78,183,142,.5); box-shadow: 0 18px 34px rgba(38,85,74,.16); transform: translateY(-6px); }
.content-card:hover::after, .content-card:focus-within::after { transform: rotate(22deg) translateX(520%); }
.card-number { display: block; margin-bottom: 27px; color: var(--green); font-family: Georgia, serif; font-size: 1.05rem; font-weight: 800; }
.content-card h3 { margin-bottom: 9px; color: var(--green-deep); }
.content-card p { margin: 0; color: var(--muted); font-size: .9rem; line-height: 1.76; }

.guide-section { position: relative; overflow: hidden; background: #1f795e; color: #f6fffa; }
.guide-section::before { position: absolute; top: -210px; right: -140px; width: 550px; height: 550px; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; content: ""; }
.guide-section::after { position: absolute; bottom: -160px; left: -110px; width: 380px; height: 380px; border: 55px solid rgba(123,196,230,.13); border-radius: 50%; content: ""; }
.guide-section .shell { position: relative; z-index: 1; }
.section-heading-light h2 { color: #fff; }
.section-heading-light .section-kicker { color: #bdeedb; }
.section-heading-light > p { color: rgba(255,255,255,.8); }
.guide-layout { display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); gap: clamp(40px, 7vw, 88px); align-items: start; }
.guide-image { position: sticky; top: 104px; overflow: hidden; margin: 0; background: #146045; box-shadow: 13px 13px 0 rgba(12, 83, 63, .45); }
.guide-image img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; transition: transform .55s ease, filter .35s ease; }
.guide-image:hover img, .guide-image:focus-within img { transform: scale(1.045); filter: saturate(1.08); }
.guide-image figcaption { background: #146045; color: rgba(255,255,255,.78); }
.route-list { display: grid; gap: 18px; margin: 0; padding: 0; list-style: none; counter-reset: route; }
.route-list li { display: flex; gap: 20px; padding: 0 10px 18px 0; border-bottom: 1px solid rgba(255,255,255,.23); transition: transform .25s ease, border-color .25s ease, background .25s ease; }
.route-list li:hover { border-color: rgba(255,224,161,.72); transform: translateX(6px); }
.route-list li > span { display: grid; width: 35px; height: 35px; flex: 0 0 35px; place-items: center; border: 1px solid rgba(255,255,255,.6); border-radius: 50%; color: #ffe0a1; font-family: Georgia, serif; font-weight: 700; }
.route-list h3 { margin-bottom: 5px; color: #fff; }
.route-list p { margin: 0; color: rgba(255,255,255,.77); font-size: .91rem; line-height: 1.75; }
.guide-note { display: grid; grid-template-columns: 124px 1fr; gap: 20px; align-items: center; margin-top: 44px; padding: 20px 24px; border: 1px solid rgba(255,255,255,.27); background: rgba(3, 58, 42, .25); }
.guide-note strong { color: #ffe0a1; font-size: 1.08rem; }
.guide-note p { margin: 0; color: rgba(255,255,255,.84); font-size: .91rem; }

.features-section { background: var(--sky-pale); }
.feature-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(360px, .88fr); gap: clamp(40px, 8vw, 100px); align-items: center; }
.feature-list { display: grid; gap: 0; }
.feature-item { display: flex; gap: 17px; padding: 21px 10px 21px 0; border-top: 1px solid rgba(45, 121, 133, .18); transition: transform .25s ease, background .25s ease, padding-left .25s ease; }
.feature-item:hover { background: rgba(255,255,255,.28); padding-left: 10px; transform: translateX(4px); }
.feature-item:last-child { border-bottom: 1px solid rgba(45, 121, 133, .18); }
.feature-item > span { display: grid; width: 36px; height: 36px; flex: 0 0 36px; place-items: center; border-radius: 50%; background: var(--green); color: white; font-size: 1.05rem; }
.feature-item:nth-child(2) > span, .feature-item:nth-child(4) > span { background: var(--sky); color: #17495d; }
.feature-item h3 { margin-bottom: 4px; color: var(--green-deep); }
.feature-item p { margin: 0; color: var(--muted); font-size: .91rem; line-height: 1.72; }
.feature-image { position: relative; margin: 0; }
.feature-image::before { position: absolute; z-index: 0; top: 23px; right: -18px; bottom: 20px; left: 25px; background: var(--green); content: ""; }
.feature-image img, .feature-image figcaption { position: relative; z-index: 1; }
.feature-image img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; border: 7px solid #fff; transition: transform .5s ease, filter .35s ease; }
.feature-image:hover img, .feature-image:focus-within img { transform: scale(1.04); filter: saturate(1.07); }

.showcase-section { padding: clamp(74px, 10vw, 118px) 0; background: var(--paper); }
.showcase-top { display: flex; align-items: end; justify-content: space-between; gap: 25px; margin-bottom: 30px; }
.showcase-top h2 { max-width: 700px; margin: 0; color: var(--green-deep); }
.gallery-showcase { display: grid; grid-template-columns: minmax(0, 1.62fr) minmax(230px, .58fr); gap: 18px; align-items: stretch; outline: none; }
.gallery-feature { display: flex; min-width: 0; margin: 0; flex-direction: column; overflow: hidden; background: #1f4d44; box-shadow: var(--shadow); }
.gallery-feature img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; transition: opacity .25s ease, transform .55s ease, filter .35s ease; }
.gallery-feature:hover img { transform: scale(1.025); filter: saturate(1.06); }
.gallery-feature figcaption { display: grid; gap: 3px; min-height: 76px; padding: 13px 17px; background: #18483d; color: rgba(255,255,255,.78); }
.gallery-feature figcaption strong { color: #fff4d0; font-size: 1rem; }
.gallery-feature figcaption span { font-size: .86rem; line-height: 1.55; }
.gallery-thumbs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; align-content: start; }
.gallery-thumb { position: relative; min-width: 0; overflow: hidden; padding: 0; border: 2px solid transparent; border-radius: 12px; background: #dcebe6; cursor: pointer; aspect-ratio: 16 / 10; transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease; }
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease, filter .3s ease; }
.gallery-thumb span { position: absolute; right: 7px; bottom: 5px; display: inline-flex; align-items: center; gap: 3px; padding: 1px 5px; background: rgba(15, 44, 39, .78); color: #fff4d0; font-family: Georgia, serif; font-size: .76rem; font-weight: 800; }
.gallery-thumb span .icon { width: 11px; height: 11px; }
.gallery-thumb:hover, .gallery-thumb:focus-visible { border-color: var(--green); box-shadow: 0 5px 14px rgba(38, 85, 74, .2); transform: translateY(-2px); }
.gallery-thumb:hover img, .gallery-thumb:focus-visible img { transform: scale(1.04); }
.gallery-thumb.is-active { border-color: var(--amber); box-shadow: 0 0 0 2px rgba(241,168,58,.24); }
.gallery-thumb.is-active img { filter: saturate(1.08); }

.updates-section { background: #f2f8f5; }
.update-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; padding-bottom: 17px; border-bottom: 1px solid var(--line); }
.update-toolbar p { margin: 0; color: var(--muted); font-size: .9rem; }
.update-toolbar strong { color: var(--green-deep); font-size: 1.1rem; }
.update-footer { display: flex; justify-content: flex-end; padding-top: 22px; }
.text-button { display: inline-flex; align-items: center; gap: 6px; padding: 8px 11px; border: 1px solid transparent; border-radius: 999px; background: transparent; color: var(--green-deep); cursor: pointer; font-size: .9rem; font-weight: 800; transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease; }
.text-button:hover, .text-button:focus-visible { border-color: rgba(38,118,90,.28); background: #fff; color: var(--amber-deep); box-shadow: 0 7px 17px rgba(38,85,74,.11); transform: translateY(-2px); }
.text-button .update-arrow { transition: transform .2s ease; }
.text-button[aria-expanded="true"] .update-arrow { transform: rotate(180deg); }
.update-list { border-top: 1px solid var(--line); }
.update-item { display: grid; grid-template-columns: 120px 1fr; gap: 27px; padding: 25px 8px; border-bottom: 1px solid var(--line); transition: background .25s ease, padding-left .25s ease; }
.update-item:hover { background: rgba(223,242,232,.36); padding-left: 14px; }
.update-item time { color: var(--green-deep); font-family: Georgia, serif; font-size: .98rem; font-weight: 800; }
.update-item h3 { margin: 5px 0 7px; color: #285b50; }
.update-item p:last-child { margin: 0; color: var(--muted); font-size: .92rem; line-height: 1.76; }
.update-points { display: grid; gap: 7px; margin: 0; padding-left: 1.15rem; color: var(--muted); font-size: .92rem; line-height: 1.72; }
.update-points li::marker { color: var(--amber-deep); }
.version-badge { display: inline-flex; margin: 0; padding: 3px 7px; border-radius: 3px; background: var(--green-pale); color: var(--green-deep); font-size: .73rem; font-weight: 800; }
.update-list:not(.is-expanded) .update-item:nth-child(n + 6) { display: none; }

.faq-section { background: var(--paper); }
.faq-layout { display: block; }
.faq-intro { margin-bottom: 42px; }
.faq-intro h2 { margin-bottom: 20px; color: var(--green-deep); }
.faq-intro > p { color: var(--muted); }
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 19px 8px 19px 2px; color: #275c50; cursor: pointer; font-size: 1rem; font-weight: 800; list-style: none; transition: color .2s ease, background .2s ease, padding-left .2s ease; }
.faq-item summary:hover, .faq-item summary:focus-visible { background: rgba(223,242,232,.34); color: var(--amber-deep); padding-left: 10px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary span { display: grid; width: 25px; height: 25px; flex: 0 0 25px; place-items: center; border: 1px solid var(--green); border-radius: 50%; color: var(--green-deep); font-size: 1.15rem; font-weight: 400; transition: transform .2s ease, background .2s ease; }
.faq-item[open] summary span { background: var(--green); color: #fff; transform: rotate(45deg); }
.faq-item p { max-width: 92%; margin: 0 0 20px; color: var(--muted); font-size: .92rem; line-height: 1.78; }

.floating-detail {
  position: fixed; z-index: 30; right: 24px; bottom: 24px;
  display: inline-flex; min-height: 48px; align-items: center; gap: 9px; padding: 10px 18px;
  border: 1px solid rgba(56, 38, 6, .14); border-radius: 999px; background: var(--amber); color: #382606;
  box-shadow: 0 10px 26px rgba(72, 50, 10, .25); font-weight: 800;
  transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
}
.floating-detail .icon { width: 18px; height: 18px; }
.floating-detail:hover, .floating-detail:focus-visible { background: #ffc563; box-shadow: 0 14px 30px rgba(72, 50, 10, .3); transform: translateY(-3px); }
.friend-links { padding: 42px 0 44px; background: var(--green-pale); color: var(--green-deep); text-align: center; }
.friend-links h2 { margin-bottom: 22px; color: var(--ink); font-size: clamp(1.65rem, 3vw, 2.35rem); }
.friend-links-list { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 14px; }
.friend-links-list a { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; padding: 9px 22px; border: 1px solid rgba(38,118,90,.08); border-radius: 999px; background: rgba(255,255,255,.88); color: #27584e; box-shadow: 0 7px 18px rgba(38,85,74,.1); font-size: .92rem; font-weight: 800; transition: color .2s ease, background .2s ease, box-shadow .2s ease, transform .2s ease; }
.friend-links-list a:hover, .friend-links-list a:focus-visible { background: #fff; color: var(--amber-deep); box-shadow: 0 10px 22px rgba(38,85,74,.16); transform: translateY(-2px); }
.site-footer { padding: 25px 0; background: #174d3f; color: rgba(255,255,255,.75); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; font-size: .76rem; }
.footer-inner p { margin: 0; }
.footer-inner p:first-child { color: #fff; font-weight: 800; }
.footer-inner a { color: #ffdb95; font-weight: 700; white-space: nowrap; }
.back-to-top { display: inline-flex; align-items: center; gap: 6px; padding: 6px 13px; border: 1px solid rgba(255,255,255,.28); border-radius: 999px; background: rgba(255,255,255,.08); transition: color .2s ease, border-color .2s ease, background .2s ease, transform .2s ease; }
.back-to-top:hover, .back-to-top:focus-visible { border-color: rgba(255,224,161,.8); background: rgba(255,255,255,.16); color: #ffe0a1; transform: translateY(-2px); }

@keyframes hero-drift {
  from { transform: scale(1.01) translate3d(0, 0, 0); }
  to { transform: scale(1.055) translate3d(-.7%, -1%, 0); }
}

html.js .reveal { opacity: 0; transform: translateY(20px); transition: opacity .55s ease, transform .55s ease; }
html.js .reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 920px) {
  :root { --shell: min(100% - 36px, 720px); }
  .header-inner { min-height: 66px; }
  .menu-toggle { display: grid; width: 40px; height: 40px; place-content: center; }
  .menu-toggle .icon { transition: transform .2s ease, color .2s ease; }
  .site-nav { position: absolute; top: 66px; right: 0; left: 0; display: grid; gap: 0; padding: 10px 18px 16px; background: rgba(253,251,247,.98); border-bottom: 1px solid var(--line); box-shadow: 0 15px 25px rgba(30,82,67,.12); transform: translateY(-125%); opacity: 0; pointer-events: none; transition: transform .25s ease, opacity .25s ease; }
  .site-nav.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .site-nav > a:not(.nav-cta) { padding: 12px 13px; border-bottom-color: rgba(31,92,74,.09); }
  .site-nav > a:not(.nav-cta):hover, .site-nav > a:not(.nav-cta):focus-visible { border-color: var(--amber); }
  .site-nav .icon { width: 17px; height: 17px; }
  .nav-cta { margin-top: 12px; text-align: center; }
  .hero { min-height: min(680px, calc(100svh - 66px)); }
  .hero-inner { padding-top: 90px; }
  .hero-facts { margin-top: 35px; }
  .split-layout, .guide-layout, .feature-layout { grid-template-columns: 1fr; }
  .section-heading { display: block; margin-bottom: 34px; }
  .section-heading > p { max-width: 580px; margin-top: 18px; }
  .content-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-image { position: static; }
  .guide-image { max-width: 620px; }
  .feature-image { max-width: 600px; }
  .faq-intro { margin-bottom: 34px; }
}

@media (max-width: 600px) {
  :root { --shell: calc(100% - 30px); }
  body { font-size: 15.5px; }
  .brand span { font-size: .82rem; }
  .brand img { width: 39px; height: 39px; }
  .hero-backdrop { object-position: 59% 20%; }
  .hero-shade { background: linear-gradient(90deg, rgba(11,48,43,.92), rgba(11,48,43,.71)); }
  .hero-inner { padding: 70px 0 80px; justify-content: flex-start; }
  .hero h1 { margin-top: 34px; font-size: clamp(2.35rem, 12.5vw, 3.9rem); }
  .hero-copy { font-size: .98rem; }
  .hero-facts { display: grid; grid-template-columns: 1fr 1fr; width: 100%; gap: 13px; }
  .hero-facts li { padding: 0; border-left: 0; }
  .hero-facts li:last-child { grid-column: 1 / -1; }
  .scroll-prompt { right: 15px; bottom: 18px; }
  .section { padding: 67px 0; }
  h2 { font-size: clamp(1.45rem, 7.4vw, 1.95rem); }
  .image-frame { border-width: 5px; transform: none; }
  .content-grid { grid-template-columns: 1fr; }
  .content-card { min-height: auto; padding: 21px; }
  .card-number { margin-bottom: 16px; }
  .guide-note { grid-template-columns: 1fr; gap: 5px; padding: 18px; }
  .feature-image::before { top: 15px; right: -10px; left: 15px; }
  .showcase-top { align-items: center; }
  .showcase-top .section-kicker { margin-bottom: 5px; }
  .gallery-showcase { grid-template-columns: 1fr; }
  .gallery-thumbs { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .update-item { grid-template-columns: 1fr; gap: 9px; padding: 22px 0; }
  .update-item time { font-size: .88rem; }
  .update-toolbar { align-items: flex-start; flex-direction: column; }
  .update-footer { padding-top: 18px; }
  .faq-item summary { padding: 17px 0; font-size: .95rem; line-height: 1.55; }
  .faq-item p { max-width: 100%; font-size: .9rem; }
  .floating-detail { right: 15px; bottom: 16px; min-height: 44px; padding: 9px 14px; font-size: .9rem; }
  .friend-links { padding: 34px 0 36px; }
  .friend-links h2 { margin-bottom: 18px; }
  .friend-links-list { gap: 10px; }
  .friend-links-list a { width: 100%; padding: 9px 14px; font-size: .88rem; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
  .footer-inner { gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
  .hero-backdrop { animation: none; }
  html.js .reveal { opacity: 1; transform: none; }
}