:root {
  --background: #f8fbfa; --foreground: #102a2e; --card: #fff; --card-foreground: #102a2e;
  --popover: #fff; --popover-foreground: #102a2e; --primary: #087d75; --primary-foreground: #fff;
  --secondary: #ddf3ee; --secondary-foreground: #075e59; --muted: #eef5f3; --muted-foreground: #57706f;
  --accent: #eaf4f8; --accent-foreground: #102a2e; --destructive: #b42318; --border: #d8e5e2;
  --input: #c9dcda; --ring: #087d75; --radius: .75rem; --scroll-thumb: #8eb9b3;
  --scroll-thumb-hover: #5e9991; --scroll-track: #edf4f2;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scrollbar-color: var(--scroll-thumb) var(--scroll-track); scrollbar-width: thin; }
body { margin: 0; background: var(--background); color: var(--foreground); font-family: var(--font-sans); font-size: 16px; line-height: 1.75; }
body::-webkit-scrollbar, *::-webkit-scrollbar { width: 10px; height: 10px; }
body::-webkit-scrollbar-track, *::-webkit-scrollbar-track { background: var(--scroll-track); }
body::-webkit-scrollbar-thumb, *::-webkit-scrollbar-thumb { background: var(--scroll-thumb); border: 2px solid var(--scroll-track); border-radius: 999px; }
body::-webkit-scrollbar-thumb:hover, *::-webkit-scrollbar-thumb:hover { background: var(--scroll-thumb-hover); }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button, summary, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, summary:focus-visible, input:focus-visible { outline: 3px solid #74c8be; outline-offset: 3px; }
.shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }

.site-header { position: sticky; top: 0; z-index: 40; background: rgba(248,251,250,.94); border-bottom: 1px solid rgba(216,229,226,.9); backdrop-filter: blur(14px); }
.header-inner { height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: flex; align-items: center; gap: 12px; min-width: max-content; }
.brand-mark { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 13px 13px 13px 4px; color: #fff; background: #087d75; font-family: "Noto Serif SC", "Songti SC", serif; font-weight: 700; font-size: 21px; }
.brand > span:last-child { display: grid; line-height: 1.25; }
.brand strong { font-family: "Noto Serif SC", "Songti SC", serif; font-size: 21px; letter-spacing: .08em; }
.brand small { margin-top: 4px; color: #69807e; font-size: 11px; letter-spacing: .04em; }
.desktop-nav { display: flex; align-items: center; gap: clamp(16px,2.2vw,30px); font-size: 14px; font-weight: 600; }
.desktop-nav a { position: relative; padding: 28px 0 24px; }
.desktop-nav a::after { content: ""; position: absolute; left: 50%; bottom: 18px; width: 0; height: 2px; background: #087d75; transition: .2s ease; }
.desktop-nav a:hover::after { left: 0; width: 100%; }
.menu-button { display: none; border: 0; background: transparent; color: #102a2e; width: 44px; height: 44px; align-items: center; justify-content: center; cursor: pointer; }
.menu-button[aria-expanded="true"] { color: #087d75; background: #e4f3ef; border-radius: 10px; }
.mobile-nav { display: none; }
.mobile-nav[hidden] { display: none !important; }

.hero { position: relative; overflow: hidden; background: linear-gradient(115deg,#f8fbfa 0 59%,#e4f3ef 59% 100%); border-bottom: 1px solid #d8e5e2; }
.hero::before { content: ""; position: absolute; inset: 0 0 0 58%; background-image: linear-gradient(rgba(8,125,117,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(8,125,117,.07) 1px,transparent 1px); background-size: 28px 28px; mask-image: linear-gradient(90deg,transparent,#000 35%); }
.hero-grid { min-height: 548px; display: grid; grid-template-columns: 1.17fr .83fr; align-items: center; gap: clamp(48px,8vw,105px); padding-top: 62px; padding-bottom: 62px; position: relative; }
.eyebrow, .section-kicker { color: #087d75; font-size: 12px; font-weight: 800; letter-spacing: .13em; }
.eyebrow { display: flex; align-items: center; gap: 9px; margin: 0 0 20px; }
.eyebrow span { width: 22px; height: 2px; background: #087d75; }
.hero h1 { margin: 0; font-family: "Noto Serif SC","Songti SC",STSong,serif; font-size: clamp(42px,5vw,66px); line-height: 1.28; letter-spacing: -.035em; font-weight: 700; }
.hero h1 em { color: #087d75; font-style: normal; }
.hero-lead { max-width: 620px; margin: 24px 0 28px; color: #476260; font-size: 17px; line-height: 1.9; }
.search-box { min-height: 60px; max-width: 600px; display: flex; align-items: center; gap: 12px; padding: 0 17px 0 21px; background: #fff; border: 1px solid #bfd7d3; border-radius: 999px; box-shadow: 0 14px 35px rgba(30,75,70,.11); }
.search-box > svg { color: #087d75; flex: 0 0 auto; }
.search-box input { width: 100%; min-width: 0; height: 56px; border: 0; outline: 0; background: transparent; color: #102a2e; font-size: 15px; }
.search-box input::-webkit-search-cancel-button { display: none; }
.search-box input::placeholder { color: #819492; }
.search-box button { display: grid; place-items: center; flex: 0 0 auto; width: 38px; height: 38px; border: 0; border-radius: 50%; background: #edf5f3; color: #315552; cursor: pointer; }
.search-box button:hover { background: #ddf3ee; }
.search-hint { margin: 12px 0 0 22px; color: #758a88; font-size: 12px; }

.knowledge-slip { position: relative; padding: 29px 30px 25px; background: rgba(255,255,255,.93); border: 1px solid #bcd8d2; border-radius: 3px 25px 25px 25px; box-shadow: 0 24px 60px rgba(35,84,78,.12); }
.slip-heading { display: flex; align-items: center; justify-content: space-between; color: #087d75; padding-bottom: 15px; border-bottom: 2px solid #102a2e; font-size: 12px; font-weight: 800; letter-spacing: .13em; }
.knowledge-slip h2 { margin: 21px 0 15px; max-width: 330px; font-family: "Noto Serif SC","Songti SC",serif; font-size: 23px; line-height: 1.55; }
.knowledge-slip ol { list-style: none; padding: 0; margin: 0; }
.knowledge-slip li { display: grid; grid-template-columns: 38px 1fr; gap: 10px; align-items: center; padding: 10px 0; border-top: 1px dashed #cbdeda; font-size: 14px; }
.knowledge-slip li b { color: #087d75; font-size: 12px; font-variant-numeric: tabular-nums; }
.slip-foot { display: flex; gap: 8px; align-items: flex-start; margin-top: 16px; padding: 12px 13px; border-radius: 8px; background: #eff8f6; color: #496c68; font-size: 12px; line-height: 1.6; }
.slip-foot svg { color: #087d75; flex: 0 0 auto; margin-top: 1px; }

.category-strip { padding: 0 0 34px; background: #fff; }
.category-grid { display: grid; grid-template-columns: repeat(4,1fr); transform: translateY(-18px); border: 1px solid #d8e5e2; background: #fff; box-shadow: 0 14px 38px rgba(30,75,70,.07); }
.category-card { display: grid; grid-template-columns: 46px 1fr auto; align-items: center; gap: 13px; min-height: 112px; padding: 20px 22px; border-right: 1px solid #e0eae8; transition: background .2s ease; scroll-margin-top: 100px; }
.category-card:last-child { border-right: 0; }
.category-card:hover { background: #f1f8f6; }
.category-icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 14px 14px 14px 5px; color: #087d75; background: #ddf3ee; }
.category-copy { display: grid; line-height: 1.35; }
.category-copy b { font-size: 15px; }
.category-copy small { margin-top: 7px; color: #6c8380; font-size: 12px; }
.category-count { align-self: start; color: #8aa09d; font-size: 11px; font-variant-numeric: tabular-nums; }

.content-section { padding: 65px 0 100px; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 34px; }
.section-kicker { margin: 0 0 6px; }
.section-head h2, .policy-section h2, .about-section h2 { margin: 0; font-family: "Noto Serif SC","Songti SC",serif; font-size: clamp(30px,4vw,42px); line-height: 1.35; }
.section-head > p { max-width: 430px; margin: 0 0 4px; color: #637b78; text-align: right; font-size: 14px; }
.article-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.article-card { position: relative; min-height: 328px; display: flex; flex-direction: column; overflow: hidden; padding: 25px; border: 1px solid #d8e5e2; border-radius: 18px; background: #fff; transition: transform .2s ease,box-shadow .2s ease,border-color .2s ease; }
.article-card:hover { transform: translateY(-3px); border-color: #add0ca; box-shadow: 0 16px 35px rgba(30,75,70,.08); }
.article-card.mint { background: linear-gradient(145deg,#fff 30%,#f0faf7); }
.article-card.sky { background: linear-gradient(145deg,#fff 30%,#f1f8fb); }
.article-card.paper { background: linear-gradient(145deg,#fff 30%,#f8faf8); }
.article-meta { display: flex; justify-content: space-between; gap: 12px; color: #6a807e; font-size: 11px; font-variant-numeric: tabular-nums; }
.article-meta span { color: #087d75; font-weight: 800; }
.article-card h3 { position: relative; z-index: 1; margin: 27px 0 13px; font-family: "Noto Serif SC","Songti SC",serif; font-size: 21px; line-height: 1.55; }
.article-card > p { position: relative; z-index: 1; margin: 0 0 22px; color: #5b716f; font-size: 14px; line-height: 1.8; }
.article-card details { margin-top: auto; position: relative; z-index: 2; }
.article-card summary { display: inline-flex; align-items: center; gap: 5px; color: #087d75; font-size: 13px; font-weight: 700; cursor: pointer; list-style: none; }
.article-card summary::-webkit-details-marker { display: none; }
.article-card details[open] summary svg { transform: rotate(180deg); }
.article-detail { display: grid; gap: 5px; margin-top: 13px; padding: 13px; border-radius: 10px; background: rgba(255,255,255,.82); border: 1px solid #d8e5e2; color: #526966; font-size: 12px; line-height: 1.55; }
.article-detail b { color: #102a2e; }
.article-detail small { display: block; margin-top: 5px; color: #8a5a27; font-size: 11px; }
.read-more { display: inline-flex; align-items: center; margin-top: auto; color: #087d75; font-size: 13px; font-weight: 800; text-decoration: underline; text-underline-offset: 4px; }
.article-number { position: absolute; right: 17px; bottom: -10px; color: rgba(8,125,117,.06); font-family: Georgia,serif; font-size: 95px; line-height: 1; }
.empty-state { display: grid; place-items: center; min-height: 340px; padding: 50px 20px; border: 1px dashed #b8cfcb; border-radius: 18px; background: #fff; text-align: center; }
.empty-state svg { color: #087d75; }
.empty-state h3 { margin: 14px 0 3px; font-size: 20px; }
.empty-state p { margin: 0; color: #667e7b; }
.empty-state button { margin-top: 20px; padding: 10px 20px; color: #fff; background: #087d75; border: 0; border-radius: 10px; font-weight: 700; cursor: pointer; }

.policy-section { padding: 85px 0; background: #0f3335; color: #fff; }
.policy-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(55px,10vw,130px); align-items: start; }
.policy-section .section-kicker { color: #7ed1c6; }
.policy-section h2 { margin-bottom: 18px; }
.policy-section > div > div:first-child > p:last-child { color: #bad0ce; }
.policy-list { border-top: 1px solid rgba(255,255,255,.22); }
.policy-list > div { display: grid; grid-template-columns: 50px 1fr; gap: 18px; padding: 23px 0; border-bottom: 1px solid rgba(255,255,255,.17); }
.policy-list > div > span { color: #7ed1c6; font-size: 12px; font-weight: 800; }
.policy-list p { display: grid; gap: 5px; margin: 0; }
.policy-list b { font-size: 16px; }
.policy-list small { color: #bad0ce; font-size: 13px; }

.about-section { display: grid; grid-template-columns: 1fr .82fr; gap: clamp(50px,8vw,100px); padding-top: 90px; padding-bottom: 90px; }
.about-main > p:last-child { max-width: 650px; margin: 20px 0 0; color: #56706d; line-height: 2; }
.disclaimer { display: flex; gap: 16px; align-items: flex-start; padding: 25px; border: 1px solid #e3cba9; border-radius: 14px; background: #fff9ee; color: #6e4b23; }
.disclaimer svg { flex: 0 0 auto; margin-top: 2px; }
.disclaimer b { color: #5b3a18; }
.disclaimer p { margin: 5px 0 0; font-size: 13px; line-height: 1.8; }

footer { color: #dbe8e6; background: #08272a; }
.footer-grid { display: grid; grid-template-columns: 1fr .75fr 1.1fr; gap: 55px; padding-top: 50px; padding-bottom: 40px; }
.footer-brand { display: flex; gap: 13px; align-items: center; }
.footer-brand > div { display: grid; }
.footer-brand b { color: #fff; font-family: "Noto Serif SC","Songti SC",serif; font-size: 21px; letter-spacing: .08em; }
.footer-brand small { color: #94adaa; font-size: 11px; }
.footer-grid > div:not(:first-child) { display: grid; align-content: start; gap: 6px; color: #9db4b1; font-size: 12px; }
.footer-grid > div:not(:first-child) b { margin-bottom: 7px; color: #fff; font-size: 14px; }
.copyright { padding: 19px 0 23px; border-top: 1px solid rgba(255,255,255,.12); color: #829c99; font-size: 11px; }

.inner-page { min-height: 62vh; }
.page-banner { padding: 70px 0 62px; background: linear-gradient(135deg,#f3faf8,#e5f4f0); border-bottom: 1px solid #d8e5e2; }
.page-banner h1 { margin: 0; font-family: "Noto Serif SC","Songti SC",serif; font-size: clamp(36px,5vw,54px); }
.page-banner p:last-child { margin: 12px 0 0; color: #59716e; }
.listing-section { padding-top: 34px; padding-bottom: 90px; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 9px; align-items: center; margin-bottom: 28px; color: #6c817f; font-size: 13px; }
.breadcrumb a { color: #087d75; text-decoration: underline; text-underline-offset: 3px; }
.listing-grid { display: grid; gap: 16px; max-width: 860px; }
.listing-card { padding: 27px 30px; background: #fff; border: 1px solid #d8e5e2; border-radius: 16px; }
.listing-card > div { display: flex; justify-content: space-between; color: #708683; font-size: 12px; }
.listing-card > div span { color: #087d75; font-weight: 800; }
.listing-card h2 { margin: 13px 0 8px; font-family: "Noto Serif SC","Songti SC",serif; font-size: 23px; line-height: 1.5; }
.listing-card h2 a:hover { color: #087d75; }
.listing-card p { margin: 0 0 16px; color: #5e7471; }
.article-surface { background: linear-gradient(180deg,#eef7f5 0,#f8fbfa 320px); }
.article-layout { max-width: 980px; padding-top: 34px; padding-bottom: 96px; }
.article-breadcrumb { margin: 0 0 22px; padding-left: 4px; }
.article-breadcrumb span { color: #99aaa8; }
.article-page { overflow: hidden; background: #fff; border: 1px solid #dce9e6; border-radius: 24px; box-shadow: 0 22px 60px rgba(30,75,70,.08); }
.article-header { position: relative; padding: 55px 70px 34px; border-bottom: 1px solid #e1ebe9; background: linear-gradient(145deg,#fff 58%,#f1f8f6); }
.article-header::before { content: ""; position: absolute; top: 0; left: 70px; width: 54px; height: 4px; border-radius: 0 0 5px 5px; background: #087d75; }
.article-category { display: inline-flex; align-items: center; padding: 6px 11px; border-radius: 999px; color: #087d75; background: #e3f4f0; font-size: 12px; font-weight: 800; letter-spacing: .06em; }
.article-header h1 { max-width: 760px; margin: 20px 0 15px; font-family: "Noto Serif SC","Songti SC",serif; font-size: clamp(32px,4vw,45px); line-height: 1.42; letter-spacing: -.02em; }
.article-deck { max-width: 690px; margin: 0 0 24px; color: #526c69; font-size: 16px; line-height: 1.85; }
.article-byline { display: flex; flex-wrap: wrap; align-items: center; gap: 9px 20px; color: #718582; font-size: 12px; }
.article-byline b { color: #4e6865; font-weight: 500; }
.publish-status { padding-left: 18px; position: relative; color: #52736f; }
.publish-status::before { content: ""; position: absolute; left: 0; top: 50%; width: 7px; height: 7px; border-radius: 50%; background: #40a394; transform: translateY(-50%); box-shadow: 0 0 0 3px #dff2ee; }
.article-body { max-width: 740px; margin: 0 auto; padding: 48px 42px 20px; color: #193638; font-size: 17px; line-height: 2.05; }
.article-body p { margin: 0 0 26px; }
.article-body p:first-child::first-letter { float: left; margin: 7px 8px 0 0; color: #087d75; font-family: "Noto Serif SC","Songti SC",serif; font-size: 44px; font-weight: 700; line-height: .8; }
.article-notice { max-width: 740px; display: flex; gap: 15px; margin: 10px auto 58px; padding: 20px 22px; border: 1px solid #d7e5e2; border-radius: 14px; background: #f5faf8; color: #536d69; }
.notice-mark { display: grid; place-items: center; flex: 0 0 auto; width: 26px; height: 26px; border-radius: 50%; color: #fff; background: #087d75; font-weight: 800; }
.article-notice b { color: #21423f; }
.article-notice p { margin: 3px 0 0; font-size: 13px; line-height: 1.75; }
.article-back { display: inline-flex; margin: 24px 0 0 4px; color: #087d75; font-size: 14px; font-weight: 700; }
.article-back:hover { text-decoration: underline; text-underline-offset: 4px; }

@media (max-width: 980px) {
  .desktop-nav { display: none; } .menu-button { display: inline-flex; }
  .mobile-nav { position: fixed; z-index: 60; top: 76px; right: 16px; width: min(330px,calc(100% - 32px)); display: grid; grid-template-columns: repeat(2,1fr); gap: 4px; padding: 14px; background: #fff; border: 1px solid #cfe0dd; border-radius: 16px; box-shadow: 0 20px 55px rgba(15,51,53,.22); }
  .mobile-nav a { padding: 12px 13px; border-radius: 9px; font-size: 14px; font-weight: 600; } .mobile-nav a:hover { background: #e7f4f1; }
  .hero { background: linear-gradient(145deg,#f8fbfa,#e7f4f1); } .hero::before { inset: 45% 0 0; }
  .hero-grid { grid-template-columns: 1fr; gap: 42px; padding-top: 55px; padding-bottom: 70px; }
  .hero-copy { text-align: center; } .eyebrow { justify-content: center; } .hero-lead, .search-box { margin-left: auto; margin-right: auto; } .search-hint { margin-left: 0; }
  .knowledge-slip { width: min(540px,100%); margin: 0 auto; text-align: left; }
  .category-grid { grid-template-columns: repeat(2,1fr); } .category-card:nth-child(2) { border-right: 0; } .category-card:nth-child(-n+2) { border-bottom: 1px solid #e0eae8; }
  .article-grid { grid-template-columns: repeat(2,1fr); } .policy-grid, .about-section { grid-template-columns: 1fr; } .policy-grid { gap: 42px; }
  .footer-grid { grid-template-columns: 1fr 1fr; } .footer-brand { grid-column: 1/-1; }
}

@media (max-width: 640px) {
  .shell { width: min(100% - 32px,1180px); } .header-inner { height: 70px; } .brand small { display: none; }
  .hero-grid { min-height: auto; padding-top: 44px; padding-bottom: 58px; } .hero h1 { font-size: 37px; line-height: 1.35; }
  .hero-lead { font-size: 15px; line-height: 1.85; } .search-box { min-height: 56px; padding-left: 17px; } .search-box input { height: 52px; font-size: 14px; }
  .knowledge-slip { padding: 25px 23px 21px; } .knowledge-slip h2 { font-size: 20px; }
  .category-strip { padding-bottom: 10px; } .category-grid { grid-template-columns: 1fr; transform: translateY(-12px); }
  .category-card, .category-card:nth-child(2) { min-height: 92px; border-right: 0; border-bottom: 1px solid #e0eae8; } .category-card:last-child { border-bottom: 0; }
  .content-section { padding: 50px 0 72px; } .section-head { display: block; margin-bottom: 25px; } .section-head > p { margin-top: 10px; text-align: left; }
  .article-grid { grid-template-columns: 1fr; } .article-card { min-height: 290px; } .policy-section { padding: 65px 0; }
  .about-section { padding-top: 65px; padding-bottom: 65px; gap: 34px; } .footer-grid { grid-template-columns: 1fr; gap: 28px; } .footer-brand { grid-column: auto; }
  .page-banner { padding: 46px 0 42px; } .listing-card { padding: 22px 20px; }
  .article-layout { padding-top: 22px; padding-bottom: 65px; } .article-breadcrumb { margin-bottom: 15px; }
  .article-page { border-radius: 17px; } .article-header { padding: 39px 24px 27px; } .article-header::before { left: 24px; width: 45px; }
  .article-header h1 { margin-top: 16px; font-size: 29px; line-height: 1.45; } .article-deck { font-size: 14px; }
  .article-byline { display: grid; gap: 6px; } .publish-status { padding-left: 18px; }
  .article-body { padding: 34px 24px 14px; font-size: 16px; line-height: 1.95; } .article-body p { margin-bottom: 22px; }
  .article-notice { margin: 7px 18px 34px; padding: 18px; } .article-back { margin-left: 2px; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *,*::before,*::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; } }
@media (forced-colors: active) { html { scrollbar-color: auto; } .brand-mark,.category-icon,.empty-state button { forced-color-adjust: none; } }