:root {
	--bg: #f3efe6;
	--paper: #fffdf8;
	--paper-2: #ebe4d6;
	--ink: #20231f;
	--ink-soft: #5e625b;
	--ink-faint: #8d8f86;
	--brand: #c95832;
	--brand-dark: #8f321c;
	--accent: #1f6d64;
	--accent-soft: #dcebe6;
	--line: #cec6b8;
	--line-dark: #23251f;
	--black: #171915;
	--white: #fff;
	--container: 1180px;
	--reading: 760px;
	--shadow: 0 18px 55px rgba(49, 42, 30, .09);
	--radius-sm: 8px;
	--radius-md: 16px;
	--radius-lg: 28px;
	--transition: 180ms ease;
	
	--primary: var(--brand);
	--secondary: var(--ink-soft);
	--info: var(--ink);
	--g_900: var(--ink);
	--g_100: var(--line);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--bg); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif; line-height: 1.75; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
body, button, input, textarea, select { font: inherit; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { border: 0; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
figure, blockquote { margin: 0; }
h1, h2, h3, h4, p { margin-top: 0; }
h1, h2, h3, h4 { line-height: 1.2; }
time { line-height: 1; }
::selection { color: var(--white); background: var(--brand); }

.container { width: min(calc(100% - 48px), var(--container)); margin-inline: auto; }
.reading-container { width: min(calc(100% - 48px), var(--reading)); margin-inline: auto; }
.kicker { display: inline-flex; align-items: center; gap: 10px; color: var(--brand-dark); font-size: .78rem; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
.kicker::before { content: ""; width: 28px; height: 2px; background: currentColor; }
.display-serif { font-family: "Noto Serif TC", "PMingLiU", "Times New Roman", serif; font-weight: 700; }
.muted { color: var(--ink-soft); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

.txt_clamp { overflow: hidden; height: 1.3em; text-overflow: ellipsis; display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 1; }
.d_inblock.txt_clamp { display: -webkit-inline-box; }

.site-header { position: sticky; top: 0; z-index: 1000; border-bottom: 1px solid rgba(35, 37, 31, .12); background: rgba(255, 253, 248, .93); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
.header-inner { min-height: 76px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 34px; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 190px; }
.brand-mark { width: 40px; height: 40px; display: grid; place-items: center; border: 2px solid var(--line-dark); border-radius: 50%; color: var(--paper); background: var(--brand); font-size: .86rem; font-weight: 900; letter-spacing: -.06em; }
.brand-text strong { display: block; font-size: .94rem; letter-spacing: .02em; }
.brand-text span { display: block; margin-top: 1px; color: var(--ink-faint); font-size: .69rem; letter-spacing: .12em; }
.main-nav { justify-self: center; }
.main-nav ul { display: flex; align-items: center; gap: 4px; }
.main-nav a { display: inline-flex; align-items: center; min-height: 40px; padding: 0 14px; border-radius: 999px; color: var(--ink-soft); font-size: .88rem; font-weight: 700; }
.main-nav a:hover, .main-nav a.is-active { color: var(--ink); background: var(--paper-2); }
.header-tools { display: flex; align-items: center; gap: 10px; }
.header-search { display: inline-flex; align-items: center; gap: 8px; color: var(--ink-soft); font-size: .84rem; }
.menu-toggle { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 50%; background: transparent; }
.menu-toggle span, .menu-toggle span::before, .menu-toggle span::after { width: 18px; height: 2px; display: block; background: var(--ink); position: relative; }
.menu-toggle span::before, .menu-toggle span::after { content: ""; position: absolute; left: 0; }
.menu-toggle span::before { top: -6px; }
.menu-toggle span::after { top: 6px; }

.btn { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 0 22px; border: 1px solid var(--line-dark); border-radius: 999px; font-weight: 800; transition: transform var(--transition), background var(--transition), color var(--transition); }
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: var(--white); background: var(--ink); }
.btn-primary:hover { background: var(--brand-dark); }
.btn-ghost { background: transparent; }
.btn-ghost:hover { background: var(--paper-2); }
.text-link { display: inline-flex; align-items: center; gap: 8px; color: var(--brand-dark); font-weight: 800; }
.text-link::after { content: "↗"; transition: transform var(--transition); }
.text-link:hover::after { transform: translate(2px,-2px); }

.section-heading { display: grid; grid-template-columns: minmax(0,1fr) minmax(280px,.65fr); gap: 70px; align-items: end; margin-bottom: 42px; }
.section-heading h2 { margin: 8px 0 0; font-size: clamp(2rem, 3.7vw, 3.8rem); letter-spacing: -.045em; }
.section-heading p { margin-bottom: 2px; color: var(--ink-soft); }

.site-footer { margin-top: 100px; border-top: 1px solid var(--line-dark); background: var(--black); color: #f4efe5; }
.footer-top { display: grid; grid-template-columns: 1.1fr .9fr; gap: 80px; padding: 70px 0 56px; }
.footer-title { max-width: 630px; margin: 10px 0 22px; font-size: clamp(2.1rem, 4vw, 4.2rem); letter-spacing: -.05em; }
.footer-title span { color: #e8754c; }
.footer-desc { max-width: 620px; margin-bottom: 0; color: #b7b3aa; }
.footer-nav { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px 28px; align-content: end; }
.footer-nav a { padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.15); color: #e7e2d8; }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; padding: 20px 0 28px; border-top: 1px solid rgba(255,255,255,.12); color: #8f8c85; font-size: .76rem; }

.line-float { position: fixed; right: 22px; bottom: 22px; z-index: 900; display: inline-flex; align-items: center; gap: 10px; min-height: 50px; padding: 0 18px 0 10px; border: 1px solid #103b2e; border-radius: 999px; color: #fff; background: #18a85f; box-shadow: 0 14px 36px rgba(10,65,39,.22); font-size: .85rem; font-weight: 800; animation: lineFloat 3.2s ease-in-out infinite; }
.line-float-icon { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; color: #18a85f; background: #fff; font-size: .72rem; font-weight: 900; }

/* main-nav */
.main-nav > ul, .site-nav__list { overflow: visible; }
.main-nav > ul > li, .site-nav__item, .subnav > li, .sub2nav > li, .subOption > li, .sub2Option > li { position: relative; }

.main-nav > ul > li:has(> .subnav) > a, .main-nav > ul > li:has(> .subOption) > a, .site-nav__item:has(> .subnav) > a, .site-nav__item:has(> .subOption) > a { gap: 8px; }
.main-nav > ul > li:has(> .subnav) > a::after, .main-nav > ul > li:has(> .subOption) > a::after, .site-nav__item:has(> .subnav) > a::after, .site-nav__item:has(> .subOption) > a::after { content: ""; width: 6px; height: 6px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: translateY(-2px) rotate(45deg); transition: transform var(--transition); }

.subnav, .sub2nav, .sub3nav { min-width: 230px; margin: 0; padding: 7px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--paper); box-shadow: var(--shadow); list-style: none; }
.main-nav .subnav { position: absolute; top: calc(100% + 10px); left: 0; z-index: 1200; display: block; opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(6px); transition: opacity var(--transition), visibility var(--transition), transform var(--transition); }
.main-nav .sub2nav, .main-nav .sub3nav { position: absolute; top: -7px; left: calc(100% + 10px); z-index: 1210; display: block; opacity: 0; visibility: hidden; pointer-events: none; transform: translateX(6px); transition: opacity var(--transition), visibility var(--transition), transform var(--transition); }

.main-nav .subnav::before { content: ""; position: absolute; top: -12px; left: 0; width: 100%; height: 12px; }
.main-nav .sub2nav::before, .main-nav .sub3nav::before { content: ""; position: absolute; top: 0; left: -12px; width: 12px; height: 100%; }
.main-nav > ul > li:hover > .subnav, .main-nav > ul > li:focus-within > .subnav, .site-nav__item:hover > .subnav, .site-nav__item:focus-within > .subnav { opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0); }
.subnav > li:hover > .sub2nav, .subnav > li:focus-within > .sub2nav, .sub2nav > li:hover > .sub3nav, .sub2nav > li:focus-within > .sub3nav { opacity: 1; visibility: visible; pointer-events: auto; transform: translateX(0); }
.main-nav .subnav a, .main-nav .sub2nav a, .main-nav .sub3nav a { width: 100%; min-height: 42px; display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 8px 12px; border-radius: 6px; color: var(--ink-soft); font-size: .84rem; font-weight: 700; line-height: 1.45; white-space: nowrap; }
.main-nav .subnav a:hover, .main-nav .subnav a:focus-visible, .main-nav .sub2nav a:hover, .main-nav .sub2nav a:focus-visible, .main-nav .sub3nav a:hover, .main-nav .sub3nav a:focus-visible { color: var(--ink); background: var(--paper-2); }

.subnav > li:has(> .sub2nav) > a::after, .sub2nav > li:has(> .sub3nav) > a::after { content: ""; flex: 0 0 auto; width: 6px; height: 6px; border-top: 1.5px solid currentColor; border-right: 1.5px solid currentColor; transform: rotate(45deg); }

.main-nav .subOption { position: absolute; top: calc(100% + 10px); left: 0; z-index: 1200; min-width: 280px; margin: 0; padding: 7px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--paper); box-shadow: var(--shadow); opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(6px); transition: opacity var(--transition), visibility var(--transition), transform var(--transition); }
.main-nav .subOption::before { content: ""; position: absolute; top: -12px; left: 0; width: 100%; height: 12px; }
.main-nav > ul > li:hover > .subOption, .main-nav > ul > li:focus-within > .subOption, .site-nav__item:hover > .subOption, .site-nav__item:focus-within > .subOption { opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0); }
.sub2Title, .sub3Title { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) 36px; align-items: center; gap: 6px; min-height: 44px; border-radius: 6px; }
.sub2Title > p, .sub3Title > p { margin: 0; min-width: 0; }
.sub2Title > p > a, .sub3Title > p > a { width: 100%; min-height: 44px; display: flex; align-items: center; padding: 8px 10px; border-radius: 6px; color: var(--ink-soft); font-size: .84rem; font-weight: 700; line-height: 1.45; }
.sub2Title > p > a:hover, .sub3Title > p > a:hover, .sub2Title > p > a:focus-visible, .sub3Title > p > a:focus-visible { color: var(--ink); background: var(--paper-2); }

.submenu-label-trigger { position: relative; width: 34px; height: 34px; display: block; align-self: center; justify-self: end; border-radius: 50%; cursor: pointer; font-size: 0; color: transparent; background: transparent; transition: background var(--transition); }
.submenu-label-trigger:hover, .submenu-label-trigger:focus-visible { background: var(--paper-2); outline: none; }
.submenu-label-trigger::before, .submenu-label-trigger::after { content: ""; position: absolute; top: 50%; left: 50%; width: 12px; height: 1.5px; border-radius: 999px; background: var(--ink); transform: translate(-50%, -50%); transition: transform var(--transition), opacity var(--transition); }
.submenu-label-trigger::after { transform: translate(-50%, -50%) rotate(90deg); }
.submenu-label-trigger[aria-expanded="true"]::after { opacity: 0; transform: translate(-50%, -50%) rotate(0); }
.sub2Option, .sub3Option { display: none; margin: 2px 0 4px; padding-left: 12px; border-left: 1px solid var(--line); }
.sub2Option.is-open, .sub3Option.is-open { display: block; }
.sub2Option > li > div:not(.sub3Title) > p, .sub3Option > li > div > p { margin: 0; }
.sub2Option > li > div:not(.sub3Title) a, .sub3Option a { min-height: 40px; display: flex; align-items: center; padding: 7px 10px; border-radius: 6px; color: var(--ink-soft); font-size: .82rem; font-weight: 650; }
.sub2Option a:hover, .sub3Option a:hover { color: var(--ink); background: var(--paper-2); }

.nav-sub-toggle, .flyout-sub-toggle { display: none; position: relative; flex: 0 0 auto; width: 38px; height: 38px; padding: 0; border-radius: 50%; color: var(--ink); background: transparent; }
.nav-sub-toggle::before, .nav-sub-toggle::after, .flyout-sub-toggle::before, .flyout-sub-toggle::after { content: ""; position: absolute; top: 50%; left: 50%; width: 12px; height: 1.5px; border-radius: 999px; background: currentColor; transform: translate(-50%, -50%); transition: transform var(--transition), opacity var(--transition); }
.nav-sub-toggle::after, .flyout-sub-toggle::after { transform: translate(-50%, -50%) rotate(90deg); }
.nav-sub-toggle[aria-expanded="true"]::after, .flyout-sub-toggle[aria-expanded="true"]::after { opacity: 0; transform: translate(-50%, -50%) rotate(0); }

@keyframes lineFloat { 0%,100%{ transform: translateY(0);} 50%{transform:translateY(-5px);} }

@media (prefers-reduced-motion: reduce) {
	*,*::before,*::after { scroll-behavior:auto !important; animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; }
}
@media (max-width: 1040px) {
	.main-nav { display: none; position: absolute; top: 76px; left: 0; right: 0; padding: 14px 24px 24px; border-bottom: 1px solid var(--line); background: var(--paper); }
	.main-nav.is-open { display: block; }
	.main-nav ul { display: grid; gap: 4px; }
	.main-nav a { border-radius: 8px; }
	.menu-toggle { display: inline-flex; }
	.header-inner { grid-template-columns: 1fr auto; }
	.header-tools { justify-self: end; }
	.header-search { display: none; }
	.main-nav { max-height: calc(100vh - 76px); overflow-y: auto; overscroll-behavior: contain; }
	.main-nav > ul, .site-nav__list { display: grid; align-items: stretch; gap: 2px; }
	.main-nav > ul > li, .site-nav__item { position: relative; min-width: 0; }
	.main-nav > ul > li > a, .site-nav__item > a { width: 100%; min-height: 46px; padding-right: 50px; }
	.main-nav > ul > li:has(> .subnav) > a::after, .main-nav > ul > li:has(> .subOption) > a::after, .site-nav__item:has(> .subnav) > a::after, .site-nav__item:has(> .subOption) > a::after { display: none; }
	.nav-sub-toggle { display: block; position: absolute; top: 4px; right: 2px; }
	.nav-sub-toggle:hover, .nav-sub-toggle:focus-visible, .flyout-sub-toggle:hover, .flyout-sub-toggle:focus-visible { background: var(--paper-2); outline: none; }
	.main-nav .subnav, .main-nav .sub2nav, .main-nav .sub3nav { position: static; width: 100%; min-width: 0; margin: 0; padding: 4px 0 5px 14px; border: 0; border-left: 1px solid var(--line); border-radius: 0; background: transparent; box-shadow: none; opacity: 1; visibility: visible; pointer-events: auto; transform: none; display: none; }
	.main-nav .subnav::before, .main-nav .sub2nav::before, .main-nav .sub3nav::before { display: none; }
	.main-nav .subnav.is-open, .main-nav .sub2nav.is-open, .main-nav .sub3nav.is-open { display: block; }
	.subnav > li, .sub2nav > li { position: relative; }
	.main-nav .subnav a, .main-nav .sub2nav a, .main-nav .sub3nav a { min-height: 42px; padding: 8px 46px 8px 10px; white-space: normal; }
	.subnav > li:has(> .sub2nav) > a::after, .sub2nav > li:has(> .sub3nav) > a::after { display: none; }
	.flyout-sub-toggle { display: block; position: absolute; top: 2px; right: 2px; z-index: 2; }
	.main-nav .subOption { position: static; width: 100%; min-width: 0; margin: 0; padding: 4px 0 5px 14px; border: 0; border-left: 1px solid var(--line); border-radius: 0; background: transparent; box-shadow: none; opacity: 1; visibility: visible; pointer-events: auto; transform: none; display: none; }
	.main-nav .subOption::before { display: none; }
	.main-nav .subOption.is-open { display: block; }
	.sub2Title, .sub3Title { grid-template-columns: minmax(0, 1fr) 38px; }
	.sub2Option, .sub3Option { padding-left: 12px; }
}
@media (max-width: 820px) {
	.container, .reading-container { width: min(calc(100% - 32px), var(--container)); }
	.header-inner { min-height: 68px; }
	.main-nav { top: 68px; }
	.brand-text span { display: none; }
	.section-heading { grid-template-columns: 1fr; gap: 18px; }
	.footer-top { grid-template-columns: 1fr; gap: 40px; }
	.main-nav { max-height: calc(100vh - 68px); }
}
@media (max-width: 560px) {
	.container, .reading-container { width: min(calc(100% - 24px), var(--container)); }
	.brand { min-width: 0; }
	.brand-mark { width: 36px; height: 36px; }
	.brand-text strong { font-size: .82rem; }
	.footer-nav { grid-template-columns: 1fr; }
	.footer-bottom { flex-direction: column; gap: 6px; }
	.line-float { width: 50px; height: 50px; min-height: 50px; padding: 0; justify-content: center; }
	.line-float span:last-child { display: none; }
	.line-float-icon { width: 34px; height: 34px; }
}
@media (prefers-reduced-motion: reduce) {
	.main-nav .subnav, .main-nav .sub2nav, .main-nav .sub3nav, .main-nav .subOption, .submenu-label-trigger::before, .submenu-label-trigger::after, .nav-sub-toggle::before, .nav-sub-toggle::after, .flyout-sub-toggle::before, .flyout-sub-toggle::after { transition: none; }
}