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@media(max-width:374px){.site-header{padding:0 18px;gap:9px}.brand{font-size:16px}.country-link{font-size:13px;padding-left:9px}.hero h1{font-size:39px}.hero-intro{font-size:15px}.hero-actions .button{font-size:12px;padding:10px 14px}.hero-coins figcaption{font-size:10px}.hero-coins figcaption span{font-size:9px}.type-sequence article{grid-template-columns:110px 1fr;column-gap:18px}.manufacture .pillar-obverse,.manufacture .pillar-reverse{width:131px}html[lang=zh-CN] .hero h1{font-size:36px}.chapter-rail a{font-size:11px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Pass 02–04: lighter book serif, stronger text separation, neutral blue atmosphere. */
.hero-shade{background:linear-gradient(90deg,rgba(3,15,20,.75) 0%,rgba(3,15,20,.24) 35%,rgba(8,29,40,.06) 65%),linear-gradient(180deg,rgba(4,20,28,.34),transparent 35%,transparent 82%,rgba(3,12,16,.2))}
.hero h1{font-size:72px;line-height:.94;font-weight:400}.hero-intro{font-size:19px;font-weight:400}.hero-actions{margin-top:34px}.hero-coins .r97-reverse{width:360px;left:47.5%}.hero-coins .portrait-obverse{left:30.7%}
@media(max-width:1250px){.hero h1{font-size:61px}.hero-intro{font-size:18px}.hero-coins .r97-reverse{width:325px;left:48%}.hero-coins .portrait-obverse{left:28%}}
@media(max-width:1100px){.hero h1{font-size:58px}.hero-coins .r97-reverse{width:33%;left:48%}.hero-coins .portrait-obverse{left:27%}}
@media(max-width:800px){.hero h1{font-size:58px}.hero-coins .r97-reverse{width:30%;left:46%}.hero-coins .portrait-obverse{left:26%}}
@media(max-width:540px){.hero h1{font-size:45px;line-height:1}.hero-intro{font-size:16px}.hero-coins .r97-reverse{width:45%;left:31%}.hero-coins .portrait-obverse{left:4%}.hero-shade{background:linear-gradient(180deg,#05151b99,#05151b77 40%,transparent 80%,#04131877),linear-gradient(90deg,#04161d99,transparent)}}
@media(max-width:374px){.hero h1{font-size:41px}.hero-intro{font-size:15px}}

.skip-link:not(:focus){clip-path:inset(100%)}.skip-link:focus{clip-path:none}.register-lenses{display:flex;gap:28px;flex-wrap:wrap;margin-bottom:26px}.register-lenses .text-link{margin-top:0}
@media(min-width:1251px){html[lang=en] .hero h1{font-size:76px}html[lang=en] .hero-intro{margin-top:27px;font-size:20px}html[lang=en] .hero-actions{margin-top:34px}}

.record small{display:block}.record a{display:table}
@media(min-width:801px) and (max-width:1100px){.hero-coins .portrait-obverse{width:21%;left:28%;bottom:30px}.hero-actions{margin-top:28px}}

/* Global header precedes main in the focus order while retaining the Hero overlay. */
.site-header{position:absolute;inset:0 0 auto 0;width:100%;z-index:20}
.site-header{color:#f8f6ee}h2{text-wrap:balance}

/* Shared task destinations retain the existing section menu. */
.collector-global-nav{display:flex;gap:20px;align-items:center;flex-wrap:wrap;grid-column:1/-1}.collector-global-nav a{padding:12px 0;min-height:44px;font-size:14px}