/* Olympia IDE — 官网样式（设计升级版）。
   在 docs/59 批准的暖纸色板与既有字阶内做工艺提升。
   色温整套走 · 纸面噪点纹理 · 字重两档 · 阴影只给截图与卡片 · 动效 prefers-reduced-motion 归零。 */

:root {
	--paper:           #fcfbf9;
	--paper-2:         #f5f0e8;
	--ink:             #1c1a16;
	--ink-2:           #564f45;
	--ink-3:           #6b655c;
	--line:            rgba(101,79,60,.12);
	--line-strong:     rgba(101,79,60,.28);
	--hairline:        1px solid var(--line);
	--accent:          #c4623f;
	--accent-btn:      #a84a2c;
	--accent-btn-h:    #8a3a20;
	--accent-deep:     #943f27;
	--accent-soft:     rgba(196,98,63,.09);
	--brand-bg:        #19191a;
	--brand-ring:      #1085d3;
	--brand-check:     #34c759;
	--radius:          4px;
	--radius-sm:       4px;
	--radius-xs:       3px;
	--maxw:            1020px;
	--mono:            ui-monospace,"Cascadia Mono",Consolas,"Courier New",monospace;
	--card:            var(--paper-2);
	--code-bg:         rgba(101,79,60,.08);
	--row-hover:       rgba(101,79,60,.05);
	--nav-glass:       rgba(252,251,249,.74);
	--nav-glass-solid: rgba(252,251,249,.96);
	/* 阴影：卡片一丝托举感，截图短中性阴影让图「压在纸上」 */
	--sh-card: 0 1px 0 rgba(60,42,24,.04), 0 10px 24px -16px rgba(60,42,24,.18);
	--sh-shot: 0 2px 0 rgba(60,42,24,.04), 0 28px 56px -28px rgba(60,42,24,.30);
	--reveal-dur:  780ms;
	--reveal-step: 28ms;
	--reveal-ease: cubic-bezier(.22,.61,.36,1);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
	margin: 0;
	background: var(--paper);
	color: var(--ink);
	font: 17px/1.5 -apple-system, "Segoe UI", "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", sans-serif;
	-webkit-text-size-adjust: 100%;
	letter-spacing: normal;
	/* 纸面纤维纹理：极淡暖噪点，叠在两块底色上都读成「纸」 */
	background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.4 0 0 0 0 0.31 0 0 0 0 0.24 0 0 0 0.03 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
code, kbd, pre, .mono { font-family: var(--mono); }
code { padding: .14em .42em; border-radius: 3px; background: var(--code-bg); color: var(--ink); font-size: .86em; overflow-wrap: anywhere; }
a { color: var(--accent-deep); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--accent-deep); outline-offset: 3px; border-radius: 3px; }
h1, h2, h3 { color: var(--ink); font-weight: 600; letter-spacing: normal; margin: 0 0 .5em; }
h1 { font-size: clamp(38px, 6vw, 60px); line-height: 1.04; }
h2 { font-size: clamp(30px, 4.4vw, 50px); line-height: 1.08; text-align: center; }
h3 { font-size: 21px; line-height: 1.25; }
p { margin: 0 0 1em; }

/* ---------- 区块节奏：104px 常规 / 112px 交替带 ---------- */
main > section {
	max-width: var(--maxw);
	margin: 0 auto;
	padding: 104px 24px;
	background: var(--paper);
	scroll-margin-top: 76px;
	--card: var(--paper-2);
}
main > section.alt {
	max-width: none;
	padding: 112px 24px;
	background: var(--paper-2);
	--card: var(--paper);
}
main > section.alt > * { max-width: var(--maxw); margin-left: auto; margin-right: auto; }
.section-lede {
	max-width: 46em;
	margin: 0 auto 36px;
	color: var(--ink-2);
	font-size: 19px;
	line-height: 1.5;
	text-align: center;
}
main > section > p:not(.section-lede),
main > section > ul.check,
main > section > ol.steps { max-width: 820px; margin-left: auto; margin-right: auto; }

/* ---------- 导航：sticky 毛玻璃条 ---------- */
.site-head {
	position: sticky;
	top: 0;
	z-index: 20;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
	max-width: none;
	height: 60px;
	padding: 0 max(24px, calc((100vw - var(--maxw)) / 2));
	background: var(--nav-glass);
	-webkit-backdrop-filter: saturate(180%) blur(20px);
	backdrop-filter: saturate(180%) blur(20px);
	border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 9px; color: var(--ink); font-weight: 600; font-size: 15px; padding: 12px 0; }
.brand:hover { text-decoration: none; color: var(--ink); }
.brand svg { width: 22px; height: 22px; filter: drop-shadow(0 1px 2px rgba(0,0,0,.18)); }
#site-nav { display: flex; align-items: center; gap: 28px; }
#site-nav a { color: var(--ink); font-size: 13.5px; opacity: .82; transition: opacity .18s ease; }
#site-nav a:hover { opacity: 1; text-decoration: none; }
#site-nav .btn { opacity: 1; background: var(--accent-btn); color: #fff; }
#site-nav .btn:hover { background: var(--accent-btn-h); color: #fff; }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 20px; height: 2px; margin: 4px 0; background: var(--ink); border-radius: 2px; }
.skip-link {
	position: fixed; top: 8px; left: 8px; z-index: 40;
	padding: 10px 14px; transform: translateY(-160%);
	border-radius: 3px; background: var(--ink); color: #fff;
}
.skip-link:focus { transform: none; color: #fff; }

/* ---------- 按钮：胶囊，17px/400，主按钮只靠底色分层 ---------- */
.btn {
	display: inline-flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 2px;
	padding: 11px 22px;
	border: 1px solid transparent;
	border-radius: 4px;
	font: inherit;
	font-size: 17px;
	font-weight: 400;
	line-height: 1.25;
	cursor: pointer;
	transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--accent-btn); color: #fff; box-shadow: 0 1px 0 rgba(255,255,255,.18) inset, 0 1px 2px rgba(60,42,24,.20); }
.btn-primary:hover { background: var(--accent-btn-h); color: #fff; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--accent-deep); }
.btn-ghost:hover { color: var(--accent-deep); text-decoration: underline; }
.btn[disabled] { opacity: .4; cursor: not-allowed; }
.btn-block { width: 100%; }
.btn-small { padding: 6px 16px; font-size: 13.5px; }
.copy { border: 0; background: none; padding: 0; color: var(--accent-deep); font: inherit; font-size: 12px; cursor: pointer; }
.copy:hover { text-decoration: underline; }

/* ---------- 首屏：产品说明与真实界面并列 ---------- */
.hero {
	display: grid;
	grid-template-columns: minmax(340px, .78fr) minmax(0, 1.22fr);
	align-items: center;
	gap: clamp(32px, 5vw, 72px);
	text-align: left;
	max-width: 1360px;
	border-top: 0;
	padding-top: clamp(64px, 8vw, 104px);
	padding-bottom: 72px;
}
.hero-copy { display: block; min-width: 0; }
.hero-copy:only-child { grid-column: 1 / -1; max-width: 760px; }
.hero:has(.hero-copy:only-child) { max-width: var(--maxw); padding-top: clamp(48px, 6vw, 72px); padding-bottom: 40px; }
.hero-copy:only-child h1 { font-size: clamp(40px, 5vw, 54px); }
.eyebrow {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	color: var(--accent-deep);
	font-size: 13.5px;
	font-weight: 600;
	letter-spacing: normal;
	margin-bottom: 20px;
}
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); flex: none; }
.hero h1 { margin-bottom: 22px; font-size: clamp(42px, 4.6vw, 60px); }
.lede { font-size: clamp(18px, 1.7vw, 21px); line-height: 1.65; color: var(--ink-2); max-width: 29em; margin: 0 0 30px; text-wrap: pretty; }
.hero-actions { display: flex; flex-wrap: wrap; justify-content: flex-start; align-items: center; gap: 12px 22px; margin: 0 0 18px; }
.hero-actions .btn-primary { min-height: 52px; padding-inline: 26px; }
.hero-note { color: var(--ink-3); font-size: 12.5px; font-weight: 400; margin: 0 0 12px; }
.hero-meta { color: var(--ink-2); font-size: 13px; }
.hero-shot { margin: 0; width: 100%; min-width: 0; max-width: 1200px; }
.hero-shot img {
	display: block; width: 100%; height: auto;
	border: var(--hairline); border-radius: var(--radius-sm);
	background: var(--paper-2); box-shadow: var(--sh-shot);
}
.hero-shot figcaption { margin-top: 12px; color: var(--ink-3); font-size: 12.5px; line-height: 1.5; max-width: 62ch; }

/* ---------- 三步条：发丝线立起来的排印 ---------- */
.strip {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 0;
	padding-top: 0;
	padding-bottom: 96px;
}
.step { padding: 26px 34px 0; border: 0; border-top: 1px solid var(--line-strong); border-radius: 0; background: none; }
.step + .step { border-left: var(--hairline); }
.step b { display: block; margin-bottom: 12px; color: var(--accent); font: 400 15px/1.2 var(--mono); letter-spacing: .02em; }
.step span { display: block; color: var(--ink); font-weight: 600; font-size: 19px; line-height: 1.3; margin-bottom: 6px; }
.step small { color: var(--ink-2); font-size: 14px; line-height: 1.5; }

/* ---------- 功能：宽面板 + 紧凑清单 ---------- */
.feature {
	display: grid;
	grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
	gap: 16px 40px;
	align-items: start;
	margin: 0 0 24px;
	padding: 26px 0 0;
	border-top: 1px solid var(--line-strong);
}
.feature h3 { font-size: 26px; line-height: 1.22; margin-bottom: .45em; }
.feature p { color: var(--ink); }
.feature .tagline { margin-bottom: 0; }
.feature-copy > p { font-size: 16px; line-height: 1.6; }
.feature-side { padding: 2px 0 0 24px; border-left: var(--hairline); }
.feature-side h3 { font-size: 18px; margin-bottom: 8px; }
.feature-side p { font-size: 15px; color: var(--ink-2); }
.feature-shot { margin: 6px 0 0; }
.feature-shot img { display: block; width: 100%; height: auto; border: var(--hairline); border-radius: var(--radius-sm); background: var(--paper-2); box-shadow: var(--sh-card); }
.feature-shot figcaption { margin-top: 12px; color: var(--ink-3); font-size: 14px; line-height: 1.5; }
.feature-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 40px; margin-top: 24px; }
.feature-list article { padding: 16px 0; border-top: var(--hairline); font-size: 16px; line-height: 1.55; }
.feature-list h3 { font-size: 18px; margin-bottom: 6px; }
.feature-list p { margin: 0; color: var(--ink-2); }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.grid article, .cols > div, .edition, .install, .faq details {
	border: var(--hairline);
	border-radius: var(--radius);
	background: var(--card);
	padding: 24px;
	font-size: 16px;
	line-height: 1.55;
}
.grid article { box-shadow: var(--sh-card); transition: border-color .18s ease, box-shadow .18s ease; }
.grid article:hover { border-color: var(--line-strong); }
.grid h3 { color: var(--ink); }
.grid p:last-child { margin-bottom: 0; }
.tagline { color: var(--ink-2); font-size: 14px; overflow-wrap: anywhere; }
.cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }

.shot { margin: 0 0 20px; }
.shot img { display: block; width: 100%; height: auto; border: var(--hairline); border-radius: var(--radius-sm); background: var(--paper-2); box-shadow: var(--sh-shot); }
.shot figcaption { margin-top: 12px; color: var(--ink-3); font-size: 14px; line-height: 1.5; }
.shot-pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }

ul.check, ul.tight, ol.steps { margin: 0; padding-left: 20px; }
ul.check { list-style: none; padding-left: 0; }
ul.check li { margin-bottom: 12px; padding-left: 0; }
ul.check b { color: var(--ink); font-weight: 600; }
li { margin-bottom: 6px; }
li:last-child { margin-bottom: 0; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--card); box-shadow: var(--sh-card); }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { padding: 12px 18px; text-align: left; border-bottom: 1px solid var(--line); }
th { background: transparent; color: var(--ink-3); font-weight: 600; font-size: 13px; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: var(--row-hover); }
td em { color: var(--ink-2); font-style: normal; }
kbd {
	display: inline-block;
	padding: 1px 8px;
	border: 1px solid var(--line-strong);
	border-bottom-width: 2px;
	border-radius: 3px;
	background: var(--paper);
	color: var(--ink);
	font-size: 12.5px;
	white-space: nowrap;
	box-shadow: 0 1px 0 rgba(0, 0, 0, .04);
}

/* ---------- 下载区 ---------- */
.editions { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; margin-bottom: 16px; }
.edition.is-primary { border: 1px solid var(--line-strong); background: var(--paper); box-shadow: var(--sh-card); }
.edition-size { font-size: 42px; font-weight: 600; line-height: 1.08; color: var(--ink); margin: 8px 0 14px; letter-spacing: normal; }
.download-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; padding: 18px 0; border-top: var(--hairline); border-bottom: var(--hairline); }
.download-facts div { display: grid; gap: 4px; }
.download-facts b { color: var(--ink-3); font-size: 12px; font-weight: 600; }
.download-facts span { color: var(--ink); font-size: 14px; }
.pill { vertical-align: baseline; color: var(--accent-deep); font-size: 13px; font-weight: 600; }
.pill::before { content: "（"; color: var(--ink-3); font-weight: 400; }
.pill::after { content: "）"; color: var(--ink-3); font-weight: 400; }
.pill-wait { color: var(--ink-3); }
.hint { color: var(--ink-3); font-size: 14px; line-height: 1.5; margin: 10px 0 0; }
table.files { font-size: 14px; }
table.files th, table.files td { padding: 9px 12px; }
details summary { cursor: pointer; color: var(--accent-deep); margin-bottom: 10px; font-weight: 600; }
details[open] summary { margin-bottom: 14px; }
.install { margin-top: 16px; }

/* ---------- FAQ / CTA ---------- */
.faq { max-width: 820px; margin: 0 auto; border-top: 1px solid var(--line-strong); }
.faq details { margin: 0; padding: 0; border: 0; border-bottom: 1px solid var(--line-strong); border-radius: 0; background: transparent; }
.faq summary {
	position: relative;
	padding: 20px 38px 20px 0;
	margin: 0;
	color: var(--ink);
	font-weight: 600;
	font-size: 17px;
	line-height: 1.45;
	list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
	content: "+";
	position: absolute;
	right: 4px;
	top: 50%;
	transform: translateY(-50%);
	color: var(--accent-deep);
	font-size: 24px;
	font-weight: 400;
	transition: transform .2s ease;
}
.faq details[open] summary::after { content: "−"; }
.faq p { max-width: 68ch; margin: 0 38px 18px 0; color: var(--ink-2); }

.cta { text-align: center; border-radius: var(--radius); background: var(--paper-2); padding: 56px 24px; box-shadow: var(--sh-card); }
.cta p { color: var(--ink-2); font-size: 19px; margin-bottom: 28px; }
.cta .btn { display: inline-flex; }
.cta-links { display: flex; justify-content: center; align-items: center; gap: 26px; flex-wrap: wrap; }
.cta-links a:not(.btn) { font-size: 15px; }

/* ---------- 注脚 ---------- */
sup.fn { line-height: 0; }
sup.fn a { color: var(--accent-deep); font-size: .68em; font-weight: 600; text-decoration: none; padding-left: 1px; }
sup.fn a:hover { text-decoration: underline; }
.fineprint { padding-top: 40px !important; padding-bottom: 48px !important; border-top: 1px solid var(--line); }
.fineprint h2 { display: block; margin: 0 0 16px; text-align: left; font-size: 16px; color: var(--ink-2); }
.fineprint ol { margin: 0; padding-left: 18px; font-size: 12px; line-height: 1.6; color: var(--ink-3); }
.fineprint li { margin-bottom: 6px; scroll-margin-top: 76px; }
.fineprint li > a { color: var(--accent-deep); white-space: nowrap; }
.fineprint li > a:hover { color: var(--accent-deep); }

/* ---------- 页脚 ---------- */
.site-foot {
	background: var(--paper-2);
	border-top: 1px solid var(--line);
	padding: 44px 24px 52px;
	text-align: center;
	color: var(--ink-2);
	font-size: 12.5px;
	line-height: 1.6;
}
.site-foot p { max-width: 72ch; margin: 0 auto 10px; }
.site-foot b { color: var(--ink); }
.site-foot a { color: var(--accent-deep); }
.legal { font-size: 12px; line-height: 1.7; color: var(--ink-3); }

/* ---------- 进场动效 ---------- */
.motion .read-progress { display: block; }
.read-progress { display: none; position: fixed; top: 0; left: 0; width: 0; height: 2px; z-index: 30; background: var(--accent); }
.motion .reveal { opacity: 0; }
.motion .reveal.is-in { animation: rise var(--reveal-dur) var(--reveal-ease) both; animation-delay: calc(var(--i, 0) * var(--reveal-step)); }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

.motion .hero-shot { perspective: 1200px; }
.motion .hero-shot img { transition: transform .3s ease; transform: rotateX(var(--tilt-x, 0deg)) rotateY(var(--tilt-y, 0deg)); will-change: transform; }
.motion .brand svg path { stroke-dasharray: var(--len, 700); stroke-dashoffset: var(--len, 700); animation: draw 1s cubic-bezier(.65, .05, .36, 1) forwards; }
.motion .brand svg path:nth-of-type(2) { animation-delay: .2s; }
@keyframes draw { to { stroke-dashoffset: 0; } }
.motion .grid article { transition: border-color .18s ease, box-shadow .18s ease; }
.motion .grid article:hover { border-color: var(--line-strong); }
.motion .faq details[open] > p { animation: rise .42s var(--reveal-ease) both; }

/* ---------- responsive ---------- */
@media (max-width: 940px) {
	.grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.strip { grid-template-columns: minmax(0, 1fr); padding-bottom: 56px; }
	.step { padding: 18px 0 0; }
	.step b { display: inline; margin: 0 10px 0 0; }
	.step span { display: inline; margin-bottom: 0; }
	.step small { display: block; margin-top: 4px; }
	.step + .step { border-left: 0; }
	.feature { grid-template-columns: minmax(0, 1fr); gap: 20px; }
	.feature-side { padding: 0; border-left: 0; }
}
@media (max-width: 860px) {
	.shot-pair { grid-template-columns: minmax(0, 1fr); }
	.hero { grid-template-columns: minmax(0, 1fr); gap: 28px; }
	.hero-copy { max-width: 760px; }
	.hero-shot { max-width: 920px; }
}
@media (max-width: 720px) {
	main > section { padding: 64px 18px; }
	main > section.alt { padding: 72px 18px; }
	.hero { grid-template-columns: minmax(0, 1fr); gap: 24px; padding-top: 48px; padding-bottom: 36px; }
	.hero h1 { font-size: clamp(40px, 11vw, 54px); }
	.hero-shot { grid-row: 2; }
	.grid, .cols, .editions, .feature-list { grid-template-columns: minmax(0, 1fr); }
	.feature-list { gap: 0; }
	.feature h3 { font-size: 22px; }
	.grid, .cols, .shot-pair { gap: 12px; }
	.grid article, .cols > div, .edition, .install, .faq details { padding: 20px; }
	.cta { border-radius: 4px; padding: 40px 20px; }
	.download-facts { grid-template-columns: minmax(0, 1fr); gap: 12px; }
	.nav-toggle { display: block; padding: 11px 10px; }
	#site-nav {
		position: absolute; top: 100%; left: 0; right: 0;
		display: none; flex-direction: column; align-items: flex-start; gap: 4px;
		padding: 12px 18px 18px;
		background: var(--nav-glass-solid);
		-webkit-backdrop-filter: saturate(180%) blur(20px);
		backdrop-filter: saturate(180%) blur(20px);
		border-bottom: 1px solid var(--line);
	}
	#site-nav a { padding: 12px 0; width: 100%; font-size: 15px; opacity: 1; }
	#site-nav .btn { padding: 12px 16px; width: auto; }
	#site-nav.open { display: flex; }
	.hero-actions { flex-direction: column; align-items: stretch; }
	.hero-actions .btn { width: 100%; }
	.copy { padding: 14px 0; }
	.faq summary { padding: 16px 38px 16px 0; }
	.faq p { margin-right: 0; }
	.edition-size { font-size: 36px; }
	.cta-links a:not(.btn) { padding: 11px 0; }
}

@media (prefers-reduced-motion: reduce) {
	html { scroll-behavior: auto; }
	.btn, .btn:hover { transform: none; }
	.motion .reveal { opacity: 1; animation: none; }
	.motion .hero-shot img { transform: none; transition: none; }
	.motion .brand svg path { stroke-dashoffset: 0; animation: none; }
	.motion .grid article { transition: none; }
	.motion .grid article:hover { border-color: var(--line); }
	.motion .faq details[open] > p { animation: none; }
	.faq summary::after { transition: none; }
}

/* ---------- 品牌更名说明段（2026-11-14） ----------
   首页不放顶部公告条，只保留这一个可锚定的说明段；
   版式与站内其它 section 一致（居中标题 + 限制行宽），样式走既有 token。 */
main > section.rename { padding: 56px 24px; }
main > section.rename p { max-width: 46em; margin-left: auto; margin-right: auto; color: var(--ink-2); }