:root {
  color-scheme: dark;
  --black: #090a0b;
  --charcoal: #111214;
  --panel: #161719;
  --gold: #d7ae66;
  --gold-light: #f3dba7;
  --muted: #aaa69c;
  --line: rgba(215, 174, 102, .22);
  --white: #f8f6f1;
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  font-synthesis: none;
  scroll-behavior: smooth;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-width: 320px; }
body { background: var(--black); color: var(--white); }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input { font: inherit; }
::selection { background: var(--gold); color: var(--black); }
:focus-visible { outline: 2px solid var(--gold-light); outline-offset: 4px; }
.skip-link { position: absolute; z-index: 20; top: -60px; left: 16px; padding: 10px 14px; background: var(--gold); color: #111; }
.skip-link:focus { top: 10px; }
.wrap { width: min(100% - 72px, 1320px); margin-inline: auto; }
.site-shell { overflow: clip; }

.site-header {
  position: absolute; z-index: 5; top: 0; left: 0; right: 0;
  height: 88px; display: flex; align-items: center; justify-content: space-between;
  width: min(100% - 72px, 1320px); margin-inline: auto;
  border-bottom: 1px solid rgba(255, 255, 255, .14);
}
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 190px; }
.brand-logo { width: 42px; height: 42px; flex: none; filter: drop-shadow(0 0 9px rgba(215,174,102,.25)); }
.brand-mark { width: 39px; height: 39px; display: grid; place-items: center; border: 1px solid var(--gold); border-radius: 11px 3px 11px 3px; color: var(--gold-light); transform: rotate(-7deg); }
.brand-mark span { transform: rotate(7deg); font-size: 21px; font-weight: 800; line-height: 1; }
.brand-name { display: flex; align-items: baseline; gap: 7px; font-size: 28px; font-weight: 800; letter-spacing: .06em; }
.brand-name span { font-size: 9px; font-weight: 650; letter-spacing: .25em; color: var(--gold); }
.desktop-nav { display: flex; align-items: center; gap: clamp(18px, 3.1vw, 48px); }
.desktop-nav a { color: #d5d2cc; font-size: 14px; transition: color .2s ease; }
.desktop-nav a:hover, .footer-top a:hover { color: var(--gold-light); }
.nav-toggle { display: none; width: 38px; height: 38px; flex: none; flex-direction: column; align-items: center; justify-content: center; gap: 5px; border: 1px solid var(--line); background: #121313; cursor: pointer; }
.nav-toggle span { display: block; width: 17px; height: 1px; background: var(--gold-light); }
.header-link { border: 1px solid rgba(215, 174, 102, .65); border-radius: 3px; padding: 10px 15px; color: var(--gold-light); background: rgba(215, 174, 102, .14); font-size: 14px; font-weight: 650; transition: background .2s ease, color .2s ease; }
.header-link span { padding-left: 8px; }
.header-link:hover { color: #13100a; background: var(--gold); }

.hero { position: relative; min-height: min(830px, 100svh); min-height: clamp(660px, 100svh, 830px); display: flex; align-items: center; isolation: isolate; background: #090909; }
.hero-art { position: absolute; inset: 0; z-index: -3; width: 100%; height: 100%; object-fit: cover; object-position: center 52%; }
.hero-shade { position: absolute; inset: 0; z-index: -2; background: linear-gradient(90deg, #090a0b 0%, rgba(9,10,11,.98) 13%, rgba(9,10,11,.90) 30%, rgba(9,10,11,.42) 60%, rgba(9,10,11,.05) 100%), linear-gradient(0deg, #090a0b 0%, transparent 28%, rgba(0,0,0,.27) 100%); }
.hero-content { padding-top: 118px; padding-bottom: 100px; }
.eyebrow, .section-kicker { margin: 0 0 26px; display: flex; align-items: center; gap: 14px; color: var(--gold); font-size: 13px; letter-spacing: .24em; font-weight: 700; }
.eyebrow-rule { width: 32px; height: 1px; background: var(--gold); }
.hero h1 { margin: 0; font-size: clamp(68px, 7.9vw, 128px); line-height: 1.08; letter-spacing: .065em; font-weight: 800; text-shadow: 0 8px 30px rgba(0,0,0,.35); }
.hero h1 em { color: var(--gold-light); font-style: normal; }
.hero-lead { margin: 28px 0 0; color: #e5e1d7; font-size: clamp(17px, 1.3vw, 19px); line-height: 1.9; max-width: 560px; }
.hero-actions { display: flex; align-items: center; gap: 13px; margin-top: 40px; }
.button { min-height: 50px; display: inline-flex; justify-content: center; align-items: center; gap: 24px; padding: 12px 24px; border: 1px solid var(--gold); border-radius: 3px; font-size: 15px; font-weight: 700; transition: transform .2s ease, background .2s ease, color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-gold { color: #18130b; background: linear-gradient(110deg, #c99f5c, #f0d7a1 56%, #bb8f4d); border-color: transparent; }
.button-outline { color: var(--gold-light); background: rgba(8, 8, 8, .36); }
.button-outline:hover { background: rgba(215, 174, 102, .12); }
.hero-footnote { margin: 38px 0 0; color: #c4b9a5; font-size: 13px; letter-spacing: .28em; }
.hero-edge { position: absolute; bottom: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, rgba(215,174,102,.55), transparent); }

.proof-strip { background: #101112; border-bottom: 1px solid var(--line); }
.proof-inner { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.proof-inner > div { min-height: 112px; display: flex; align-items: center; gap: 22px; padding: 24px 34px; border-right: 1px solid var(--line); }
.proof-inner > div:first-child { padding-left: 0; }
.proof-inner > div:last-child { border-right: 0; }
.proof-index { color: var(--gold); font-size: 14px; letter-spacing: .1em; white-space: nowrap; }
.proof-inner strong { font-size: 19px; letter-spacing: .04em; }

.integrity-section { padding-block: clamp(68px, 7vw, 110px); border-bottom: 1px solid var(--line); background: linear-gradient(150deg, #0f1113, #080a0b 80%); }
.integrity-grid { display: grid; grid-template-columns: minmax(0, .36fr) minmax(0, .64fr); align-items: center; gap: clamp(35px, 5vw, 80px); }
.integrity-copy { min-width: 0; }
.integrity-copy h2 { font-size: clamp(42px, 4.4vw, 68px); line-height: 1.34; letter-spacing: .035em; }
.integrity-copy-prompt { margin: 30px 0 16px; color: #e1d5c1; font-size: clamp(18px, 1.7vw, 22px); font-weight: 600; line-height: 1.5; }
.integrity-figure { margin: 0; min-width: 0; border: 1px solid rgba(215, 174, 102, .35); background: #0c0d0e; box-shadow: 0 22px 70px rgba(0, 0, 0, .28); }
.integrity-link-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 10px; }
.integrity-link-text { overflow-wrap: anywhere; color: #e1d5c1; font-size: 15px; }
.integrity-copy-button { flex: none; min-height: 36px; padding: 5px 12px; border: 1px solid rgba(215, 174, 102, .6); border-radius: 5px; background: rgba(215, 174, 102, .12); color: var(--gold-light); font-size: 15px; cursor: pointer; transition: background .2s ease, border-color .2s ease; }
.integrity-copy-button:hover { border-color: var(--gold); background: rgba(215, 174, 102, .22); }
.integrity-copy-button:focus-visible { outline: 2px solid var(--gold-light); outline-offset: 3px; }
.integrity-copy-status { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.integrity-figure a { display: block; position: relative; }
.integrity-figure img { display: block; width: 100%; height: auto; }
.integrity-zoom { position: absolute; right: 13px; bottom: 13px; padding: 7px 10px; border: 1px solid rgba(215, 174, 102, .5); background: rgba(9, 10, 11, .88); color: var(--gold-light); font-size: 13px; }

.section-pad { padding-block: clamp(82px, 9vw, 140px); }
.section-kicker { justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--line); padding-bottom: 20px; margin-bottom: 34px; letter-spacing: .2em; }
.section-kicker span { color: #93836c; font-size: 12px; letter-spacing: .06em; white-space: nowrap; }
h2 { margin: 0; font-size: clamp(43px, 4.45vw, 72px); line-height: 1.22; letter-spacing: -.045em; font-weight: 700; }
h2 span { color: var(--gold-light); }
.section-lead { margin: 28px 0 0; color: #bdbab3; font-size: 17px; line-height: 1.9; max-width: 590px; }
.technology { background: linear-gradient(165deg, #101113, #090a0b 68%); }
.technology-grid { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); align-items: stretch; gap: clamp(42px, 6.2vw, 96px); }
.technology-copy { min-width: 0; }
.technology-points { margin-top: 48px; border-top: 1px solid var(--line); }
.feature-line { display: grid; grid-template-columns: 52px 1fr; gap: 15px; padding: 23px 0; border-bottom: 1px solid var(--line); }
.feature-no { color: var(--gold); font-size: 15px; font-family: Georgia, serif; }
.feature-line h3 { margin: 0 0 7px; font-size: 20px; font-weight: 650; }
.feature-line p { margin: 0; color: #aaa8a2; font-size: 15px; line-height: 1.7; }
.technology-visual { position: relative; min-height: 590px; border: 1px solid var(--line); background: #151310; overflow: hidden; }
.technology-visual img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.visual-caption { position: absolute; left: 24px; bottom: 22px; padding: 10px 14px; border: 1px solid rgba(215,174,102,.35); background: rgba(8,8,8,.66); backdrop-filter: blur(12px); color: var(--gold-light); font-size: 13px; letter-spacing: .1em; }

.experience { background: #0c0d0e; border-top: 1px solid rgba(255,255,255,.04); }
.section-heading { display: grid; grid-template-columns: 1fr 330px; align-items: end; gap: 50px; margin-bottom: 52px; }
.section-heading p:last-child { margin: 0 0 8px; color: #b8b6af; font-size: 17px; line-height: 1.9; }
.experience-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 15px; }
.experience-card { position: relative; min-height: 315px; display: flex; flex-direction: column; justify-content: flex-end; padding: 33px; border: 1px solid var(--line); background: linear-gradient(145deg, #1b1a17, #111213 65%); transition: border-color .2s ease, transform .2s ease; }
.experience-card:hover { transform: translateY(-4px); border-color: rgba(215,174,102,.55); }
.card-number { position: absolute; top: 25px; left: 32px; color: var(--gold); font-family: Georgia, serif; font-size: 50px; line-height: 1; opacity: .8; }
.experience-card h3 { margin: 0 0 14px; font-size: 23px; }
.experience-card p { margin: 0; color: #adaaa3; font-size: 15px; line-height: 1.8; }

.platforms { background: #141311; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.platforms-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .95fr); align-items: start; gap: clamp(70px, 9vw, 150px); }
.platform-note { margin: 24px 0 0; color: #9c9385; font-size: 13px; }
.platform-list { border-top: 1px solid var(--line); }
.platform-list > div { display: grid; grid-template-columns: 44px 1fr auto; align-items: center; gap: 12px; padding: 25px 0; border-bottom: 1px solid var(--line); }
.platform-list span { color: var(--gold); font-family: Georgia, serif; font-size: 16px; }
.platform-list strong { font-size: clamp(18px, 2.1vw, 28px); font-weight: 600; letter-spacing: .02em; }
.platform-list small { color: #9b988f; font-size: 13px; }

.signin-section { background: radial-gradient(circle at 85% 22%, rgba(137,96,36,.11), transparent 38%), #0c0d0e; }
.guide-teaser { border-top: 1px solid var(--line); background: radial-gradient(circle at 80% 40%, rgba(196,143,59,.13), transparent 36%), #10100f; }
.guide-teaser-inner { display: flex; align-items: flex-end; justify-content: space-between; gap: 36px; }
.guide-teaser-inner > div { max-width: 740px; }
.guide-teaser-inner .button { white-space: nowrap; }
.signin-grid { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); align-items: center; gap: clamp(50px, 8vw, 120px); }
.signin-copy .section-lead { max-width: 510px; }
.signin-entry { min-width: 0; min-height: 360px; display: flex; flex-direction: column; align-items: flex-start; padding: clamp(28px, 4vw, 55px); border: 1px solid rgba(215,174,102,.48); box-shadow: 0 26px 80px rgba(0,0,0,.35), 0 0 60px rgba(200,142,50,.07); background: radial-gradient(circle at 85% 15%, rgba(196,143,59,.16), transparent 42%), #121313; }
.signin-entry img { width: 55px; height: 55px; margin-bottom: 25px; }
.signin-entry > span { color: var(--gold); font-size: 14px; letter-spacing: .13em; }
.signin-entry strong { margin-top: 8px; font-size: clamp(25px, 2.7vw, 36px); font-weight: 650; }
.signin-entry .button { margin-top: 36px; min-width: 220px; }
.signin-entry small { margin-top: 15px; color: #aaa59b; font-size: 13px; }

.site-footer { background: #070808; border-top: 1px solid var(--line); }
.footer-top { min-height: 170px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.footer-brand { display: flex; align-items: center; gap: 17px; }
.footer-logo { width: 49px; height: 49px; flex: none; }
.footer-links { display: flex; gap: 28px; align-items: center; color: var(--gold); font-size: 15px; }
.footer-links a:hover { color: var(--gold-light); }
.footer-mark { width: 46px; height: 46px; display: grid; place-items: center; border: 1px solid var(--gold); border-radius: 10px 2px 10px 2px; color: var(--gold-light); font-size: 25px; font-weight: 800; }
.footer-brand div { display: flex; flex-direction: column; gap: 4px; }
.footer-brand strong { font-size: 20px; }
.footer-brand div span { color: #aaa59b; font-size: 13px; letter-spacing: .16em; }
.footer-top > a { color: var(--gold); font-size: 15px; }
.footer-top > a span { margin-left: 12px; }
.footer-bottom { min-height: 66px; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: #8f8c85; font-size: 13px; }
.footer-legal { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; }
.footer-privacy-link { flex: none; color: var(--gold); font-size: 14px; }
.footer-privacy-link:hover { color: var(--gold-light); }
.footer-slogan { flex: none; }
.footer-bottom .footer-icp-link { color: inherit; text-decoration: none; }
.footer-bottom .footer-icp-link:hover { color: inherit; text-decoration: none; }
.footer-bottom .footer-icp-link:focus-visible { outline: 1px solid currentColor; outline-offset: 3px; }

.privacy-main { padding-block: clamp(36px, 5vw, 64px) clamp(56px, 7vw, 90px); }
.privacy-article { max-width: 960px; color: #d7d3cb; font-size: 16px; line-height: 1.95; overflow-wrap: anywhere; }
.privacy-article h1 { margin: 0 0 32px; color: var(--white); font-size: clamp(34px, 4vw, 48px); line-height: 1.35; letter-spacing: .04em; }
.privacy-article h2 { margin: 44px 0 16px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--gold-light); font-size: clamp(22px, 2.4vw, 28px); line-height: 1.55; letter-spacing: 0; scroll-margin-top: 24px; }
.privacy-article h3 { margin: 28px 0 12px; color: var(--white); font-size: 20px; line-height: 1.6; }
.privacy-article h4 { margin: 22px 0 10px; color: var(--white); font-size: 17px; line-height: 1.6; }
.privacy-article p { margin: 0 0 18px; }
.privacy-contents { margin: 24px 0 32px; padding: 20px 24px; border: 1px solid var(--line); background: #111214; }
.privacy-contents ol { margin: 0; padding-left: 24px; }
.privacy-contents li { padding: 3px 0; }
.privacy-contents a { color: var(--gold-light); }
.privacy-contents a:hover { text-decoration: underline; text-underline-offset: 4px; }
.privacy-table-wrap { margin: 22px 0 28px; }
.privacy-article table { width: 100%; border-collapse: collapse; table-layout: fixed; font-size: 16px; line-height: 1.75; }
.privacy-article th, .privacy-article td { padding: 14px 16px; border: 1px solid var(--line); text-align: left; vertical-align: top; font-weight: 400; }
.privacy-article thead th { color: var(--gold-light); background: #181713; font-weight: 600; }
.privacy-article tbody th { width: 22%; color: var(--white); }
.privacy-article .privacy-updated { margin-top: 34px; padding-top: 22px; border-top: 1px solid var(--line); color: #aaa69c; }

@media (max-width: 600px) {
  .privacy-contents { padding: 16px; }
  .privacy-article th, .privacy-article td { padding: 10px 8px; }
}

@media (max-width: 1050px) {
  .desktop-nav { gap: 18px; }
  .desktop-nav a { font-size: 13px; }
  .proof-inner > div { flex-direction: column; align-items: flex-start; justify-content: center; gap: 7px; }
  .technology-grid, .signin-grid { gap: 40px; }
  .technology-visual { min-height: 520px; }
}

@media (max-width: 900px) {
  .wrap, .site-header { width: min(100% - 36px, 1320px); }
  .site-header { height: 76px; }
  .desktop-nav { display: none; }
  .nav-toggle { display: inline-flex; margin-left: auto; }
  .site-header.nav-open .desktop-nav { position: absolute; top: calc(100% - 1px); left: 0; right: 0; display: grid; gap: 0; padding: 8px; border: 1px solid var(--line); background: #111213; box-shadow: 0 22px 45px rgba(0,0,0,.5); }
  .site-header.nav-open .desktop-nav a { padding: 11px 13px; font-size: 15px; }
  .site-header.nav-open .desktop-nav a:hover { background: rgba(215,174,102,.1); }
  .brand { min-width: auto; }
  .hero { min-height: 710px; }
  .hero-art { object-position: 60% center; }
  .hero-shade { background: linear-gradient(90deg, rgba(9,10,11,.99), rgba(9,10,11,.82) 49%, rgba(9,10,11,.32)), linear-gradient(0deg, #090a0b, transparent 35%); }
  .hero-content { padding-top: 125px; }
  .proof-inner { grid-template-columns: 1fr; }
  .proof-inner > div { min-height: 80px; flex-direction: row; align-items: center; gap: 24px; padding: 16px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .proof-inner > div:last-child { border-bottom: 0; }
  .integrity-grid { grid-template-columns: 1fr; gap: 36px; }
  .integrity-copy h2 { font-size: clamp(40px, 7vw, 60px); }
  .technology-grid, .platforms-grid, .signin-grid { grid-template-columns: 1fr; }
  .technology-visual { min-height: 390px; }
  .section-heading { grid-template-columns: 1fr; gap: 18px; }
  .section-heading p:last-child { max-width: 580px; }
  .experience-grid { gap: 10px; }
  .experience-card { min-height: 295px; padding: 22px; }
  .card-number { left: 22px; }
  .platforms-grid { gap: 46px; }
  .signin-grid { gap: 44px; }
  .guide-teaser-inner { display: block; }
  .guide-teaser-inner .button { margin-top: 30px; }
}

@media (max-width: 600px) {
  .site-header { height: 69px; }
  .brand-mark { width: 34px; height: 34px; }
  .brand-name { font-size: 23px; }
  .brand-name span { display: none; }
  .header-link { padding: 9px 10px; font-size: 12px; }
  .hero { min-height: 690px; align-items: flex-end; }
  .hero-art { object-position: 60% center; opacity: .76; }
  .hero-shade { background: linear-gradient(0deg, #090a0b 3%, rgba(9,10,11,.92) 31%, rgba(9,10,11,.42) 88%), linear-gradient(90deg, rgba(9,10,11,.35), transparent); }
  .hero-content { padding-top: 130px; padding-bottom: 76px; }
  .hero h1 { font-size: clamp(56px, 14vw, 84px); }
  .hero-lead { margin-top: 22px; font-size: 16px; }
  .hero-lead br { display: none; }
  .hero-actions { flex-wrap: wrap; margin-top: 28px; }
  .button { min-height: 48px; padding: 10px 16px; gap: 10px; font-size: 14px; }
  .hero-footnote { margin-top: 27px; }
  .section-pad { padding-block: 72px; }
  .section-kicker { margin-bottom: 26px; font-size: 11px; letter-spacing: .1em; }
  .section-kicker span { font-size: 11px; }
  h2 { font-size: clamp(40px, 10vw, 56px); }
  .section-lead { font-size: 16px; }
  .technology-points { margin-top: 34px; }
  .feature-line { grid-template-columns: 40px 1fr; }
  .feature-line h3 { font-size: 18px; }
  .technology-visual { min-height: 280px; }
  .visual-caption { left: 12px; bottom: 12px; font-size: 11px; }
  .experience-grid { grid-template-columns: 1fr; }
  .experience-card { min-height: 185px; padding: 26px; }
  .card-number { top: 20px; left: 26px; font-size: 35px; }
  .experience-card h3 { margin-top: 55px; font-size: 21px; }
  .platform-list > div { grid-template-columns: 35px 1fr; padding: 19px 0; }
  .platform-list small { grid-column: 2; }
  .signin-entry { min-height: 310px; }
  .footer-top { min-height: 130px; }
  .footer-top { flex-wrap: wrap; padding-block: 24px; gap: 22px; }
  .footer-links { flex-wrap: wrap; gap: 16px; font-size: 14px; }
  .footer-bottom { align-items: flex-start; justify-content: center; flex-direction: column; padding-block: 20px; gap: 7px; }
}

/* Inner pages keep the same black-and-gold language while prioritizing the task. */
.inner-header { position: relative; }
.download-main, .guide-main { min-height: 70vh; }
.download-hero { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); gap: clamp(35px, 6vw, 90px); align-items: center; min-height: 695px; padding-block: 84px 105px; }
.download-copy h1, .guide-head h1 { margin: 0; font-size: clamp(56px, 6.1vw, 98px); letter-spacing: -.06em; line-height: 1.12; }
.download-copy h1 { letter-spacing: .065em; }
.download-copy h1 em, .guide-head h1 em { color: var(--gold-light); font-style: normal; }
.download-lead { max-width: 560px; margin: 24px 0 0; font-size: 17px; line-height: 1.9; color: #c8c4bb; }
.system-detected { display: inline-flex; margin-top: 28px; padding: 8px 13px; border: 1px solid var(--line); color: var(--gold-light); font-size: 14px; background: rgba(215,174,102,.06); }
.download-panel { max-width: 545px; margin-top: 24px; padding: 23px; border: 1px solid rgba(215,174,102,.43); background: linear-gradient(145deg, #1c1a16, #111213); box-shadow: 0 16px 55px rgba(0,0,0,.24); }
.download-panel-top { display: flex; justify-content: space-between; gap: 10px; margin-bottom: 17px; font-size: 14px; color: #a6a39a; }
.download-panel-top strong { color: var(--gold-light); font-size: 16px; }
.primary-download { width: 100%; min-height: 63px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 16px 21px; border: 0; border-radius: 3px; color: #15110a; background: linear-gradient(100deg, #c1944c, #f4dca9 55%, #bb8b44); font-size: 18px; font-weight: 800; cursor: pointer; transition: filter .2s, transform .2s; }
.primary-download:not(:disabled):hover { filter: brightness(1.1); transform: translateY(-2px); }
.primary-download:disabled { cursor: not-allowed; opacity: .62; }
.primary-download span { font-size: 27px; line-height: 1; }
.release-meta { margin: 13px 0 0; color: #b2aca0; font-size: 14px; }
.download-status { min-height: 20px; margin: 8px 0 0; color: var(--gold-light); font-size: 14px; }
.other-platforms { display: flex; align-items: flex-start; gap: 17px; margin-top: 26px; }
.other-platforms > span { padding-top: 11px; color: #979187; font-size: 13px; white-space: nowrap; }
.os-options { display: flex; flex-wrap: wrap; gap: 7px; }
.os-options button { border: 1px solid rgba(215,174,102,.25); padding: 9px 11px; color: #bbb5a9; background: #131415; font-size: 13px; cursor: pointer; }
.os-options button.selected { border-color: var(--gold); color: var(--gold-light); background: rgba(215,174,102,.12); }
.os-options button:hover { color: var(--gold-light); }
.download-visual { position: relative; height: 560px; overflow: hidden; border: 1px solid var(--line); background: #191713; }
.download-visual:after { content: ''; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(0,0,0,.5), transparent 45%); pointer-events: none; }
.download-visual img { width: 100%; height: 100%; object-fit: cover; object-position: 69% center; }
.download-visual span { position: absolute; z-index: 1; left: 27px; bottom: 25px; font-size: 14px; letter-spacing: .2em; color: var(--gold-light); }
.download-information { border-top: 1px solid var(--line); background: #101112; padding-block: 68px 90px; }
.download-information-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 34px; }
.download-information-grid > div { padding-top: 20px; border-top: 1px solid var(--line); }
.download-information-grid span { color: var(--gold); font-size: 13px; }
.download-information-grid h2 { margin-top: 23px; font-size: 23px; }
.download-information-grid p { margin: 14px 0 0; color: #aaa69d; line-height: 1.8; font-size: 15px; }
.download-information-grid a { color: var(--gold-light); border-bottom: 1px solid var(--gold); }

.guide-head { padding-top: 78px; padding-bottom: 45px; }
.guide-head-grid { display: grid; grid-template-columns: minmax(0,1fr) 380px; align-items: end; gap: 70px; }
.guide-head-grid > p { color: #bbb6ad; font-size: 17px; line-height: 1.9; margin: 0 0 8px; }
.guide-search { max-width: 760px; margin-top: 54px; }
.guide-search label { display: block; margin-bottom: 12px; color: var(--gold-light); font-size: 14px; }
.guide-search-box { display: flex; align-items: center; gap: 11px; height: 62px; border: 1px solid rgba(215,174,102,.54); background: #171716; padding-inline: 19px; }
.guide-search-box > span { color: var(--gold); font-size: 28px; }
.guide-search-box input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--white); font-size: 17px; }
.guide-search-box input::placeholder { color: #89857e; }
.guide-search-box kbd { border: 1px solid #5f594d; padding: 2px 7px; color: #9e988b; font-size: 13px; }
.guide-content { padding-bottom: 110px; }
.guide-toolbar { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; padding-bottom: 17px; border-bottom: 1px solid var(--line); }
.guide-toolbar > span { color: #958f83; font-size: 13px; white-space: nowrap; }
.guide-filters { display: flex; flex-wrap: wrap; gap: 7px; }
.guide-filters button { border: 1px solid transparent; padding: 9px 14px; background: transparent; color: #aba69b; font-size: 14px; cursor: pointer; }
.guide-filters button.active { color: #191309; border-color: var(--gold); background: var(--gold); font-weight: 700; }
.guide-filters button:hover:not(.active) { color: var(--gold-light); }
.qa-card { border-bottom: 1px solid var(--line); }
.qa-card[hidden] { display: none; }
.qa-card summary { display: grid; grid-template-columns: 62px 1fr 28px; align-items: center; gap: 15px; min-height: 89px; list-style: none; cursor: pointer; font-size: 20px; font-weight: 650; line-height: 1.45; }
.qa-card summary::-webkit-details-marker { display: none; }
.qa-number { color: var(--gold); font-family: Georgia, serif; font-size: 18px; font-weight: 400; }
.qa-chevron { justify-self: end; color: var(--gold); transition: transform .2s; }
.qa-card[open] .qa-chevron { transform: rotate(180deg); }
.qa-answer { padding: 0 43px 34px 77px; color: #c4c0b7; font-size: 16px; line-height: 1.85; }
.qa-answer > p { margin: 0 0 16px; }
.qa-answer a { color: var(--gold-light); border-bottom: 1px solid var(--gold); }
.guide-action { color: #aba69a; }
.guide-callout { border-left: 2px solid var(--gold); padding: 11px 16px; background: rgba(215,174,102,.08); }
.flow-diagram, .field-diagram, .relation-diagram, .compare-diagram, .risk-diagram { margin: 25px 0; border: 1px solid var(--line); background: #151514; }
.flow-diagram { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; padding: 20px; }
.flow-diagram span { border: 1px solid rgba(215,174,102,.42); padding: 11px 13px; color: var(--gold-light); font-size: 14px; }
.flow-diagram i { color: var(--gold); font-style: normal; }
.field-diagram { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1px; background: var(--line); }
.field-diagram span { display: flex; flex-direction: column; gap: 5px; padding: 15px 18px; background: #151514; color: #9f998e; font-size: 13px; }
.field-diagram strong { color: #eee4d2; font-size: 15px; font-weight: 600; }
.relation-diagram { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 13px; padding: 20px; }
.relation-diagram div { display: grid; gap: 4px; min-width: 120px; border: 1px solid rgba(215,174,102,.37); padding: 12px; text-align: center; }
.relation-diagram strong { color: var(--gold-light); font-size: 15px; }
.relation-diagram small { font-size: 12px; color: #9f9a90; }
.relation-diagram > span, .relation-diagram b { color: var(--gold); font-size: 13px; }
.compare-diagram, .risk-diagram { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); }
.compare-diagram > div, .risk-diagram > div { padding: 20px; }
.compare-diagram > div + div, .risk-diagram > div + div { border-left: 1px solid var(--line); }
.compare-diagram strong, .risk-diagram strong { color: var(--gold-light); }
.compare-diagram p, .risk-diagram p { margin: 8px 0 0; font-size: 14px; line-height: 1.7; }
.risk-good { background: rgba(145,128,67,.08); }
.risk-bad { background: rgba(178,78,69,.09); }
.guide-empty { text-align: center; padding: 75px 20px; border-bottom: 1px solid var(--line); }
.guide-empty strong { color: var(--gold-light); font-size: 20px; }
.guide-empty p { color: #aaa69b; }
.guide-help { border-top: 1px solid var(--line); background: #141311; padding-block: 70px; }
.guide-help .wrap { display: flex; align-items: end; justify-content: space-between; gap: 28px; }
.guide-help h2 { font-size: clamp(34px,4vw,55px); }
.guide-help .wrap > div:last-child { display: flex; gap: 12px; flex-wrap: wrap; }

@media (max-width: 1050px) {
  .download-hero { grid-template-columns: 1fr .78fr; gap: 30px; }
  .download-visual { height: 500px; }
  .guide-head-grid { grid-template-columns: 1fr 300px; gap: 30px; }
}
@media (max-width: 800px) {
  .download-hero, .guide-head-grid { grid-template-columns: 1fr; }
  .download-hero { min-height: auto; padding-block: 72px; }
  .download-visual { height: 350px; }
  .download-information-grid { grid-template-columns: 1fr; }
  .guide-head { padding-top: 64px; }
  .guide-head-grid > p { max-width: 590px; }
  .guide-help .wrap { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 600px) {
  .brand-logo { width: 36px; height: 36px; }
  .download-copy h1, .guide-head h1 { font-size: clamp(49px, 12vw, 72px); }
  .download-visual { height: 270px; }
  .download-panel { padding: 16px; }
  .primary-download { min-height: 59px; font-size: 16px; }
  .other-platforms { display: block; }
  .os-options { margin-top: 10px; }
  .guide-search { margin-top: 38px; }
  .guide-search-box { height: 55px; }
  .guide-search-box input { font-size: 15px; }
  .guide-toolbar { align-items: flex-start; flex-direction: column; }
  .guide-filters button { padding: 8px 10px; font-size: 13px; }
  .qa-card summary { grid-template-columns: 36px 1fr 19px; gap: 8px; min-height: 75px; font-size: 17px; }
  .qa-answer { padding: 0 0 27px 44px; font-size: 15px; }
  .field-diagram, .compare-diagram, .risk-diagram { grid-template-columns: 1fr; }
  .compare-diagram > div + div, .risk-diagram > div + div { border-left: 0; border-top: 1px solid var(--line); }
  .guide-help .wrap > div:last-child { width: 100%; }
}

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