/* 官网视觉沿用宣传片的夜航语言：深海夜色、黄铜线稿、宋体标题。演示区仍加载产品原版主题。 */
:root {
  --abyss: #04070F; --night: #070D1A; --deep: #0B1426; --hull: #101B30;
  --rule: rgba(158, 178, 210, .13); --rule-2: rgba(158, 178, 210, .07);
  --brass: #E6C587; --brass-hi: #F6E4BD; --brass-rgb: 230, 197, 135;
  --ink-hi: #EEF2F8; --fog: #97A3B8; --dim: #5E6A80;
  --tide: #5FD4D0; --signal: #E3B45C; --kelp: #86C79A; --coral: #E0655C;
  --display: "Iowan Old Style", "Palatino Linotype", Palatino, "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", Georgia, serif;
  --wordmark: "Avenir Next", Avenir, Futura, "Century Gothic", "Helvetica Neue", sans-serif;
  --horizon: 84%;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; background: var(--abyss); }
body { margin: 0; background: var(--abyss); color: var(--ink-hi); font: 16px/1.7 var(--sans); -webkit-font-smoothing: antialiased; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; cursor: pointer; color: inherit; }
a { color: inherit; text-decoration: none; }
button, h1, h2, h3, h4, h5, p { margin: 0; }
img { display: block; }
[hidden] { display: none !important; }
[data-icon] { display: inline-flex; align-items: center; flex-shrink: 0; width: 18px; height: 18px; vertical-align: middle; }
[data-icon] svg { width: 100%; height: 100%; }
:focus-visible { outline: 2px solid var(--brass); outline-offset: 4px; }
::selection { background: rgba(var(--brass-rgb), .32); color: #fff; }
.lp-container { width: min(1200px, calc(100% - 80px)); margin-inline: auto; }
.lp-skip { position: fixed; top: -70px; left: 20px; z-index: 100; background: var(--brass); color: var(--abyss); padding: 12px 20px; border-radius: 8px; }
.lp-skip:focus { top: 12px; }

/* 页头 */
.lp-header { position: sticky; top: 0; z-index: 20; height: 72px; background: rgba(4, 7, 15, .62); border-bottom: 1px solid var(--rule-2); backdrop-filter: blur(16px) saturate(1.2); -webkit-backdrop-filter: blur(16px) saturate(1.2); }
.lp-header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.lp-brand { display: inline-flex; align-items: center; }
.lp-wordmark { font: 300 17px/1 var(--wordmark); letter-spacing: .46em; text-transform: uppercase; color: var(--brass-hi); margin-right: -.46em; }
.lp-nav { display: flex; align-items: center; gap: 34px; color: var(--fog); font-size: 13.5px; }
.lp-nav a { transition: color 160ms ease; }
.lp-nav a:hover { color: var(--brass-hi); }
.lp-header-actions { display: flex; align-items: center; gap: 14px; }
.lp-language { display: inline-flex; align-items: center; justify-content: center; min-height: 36px; padding: 0 12px; border: 0; border-radius: 999px; background: transparent; color: var(--fog); font-size: 13px; }
.lp-language:hover { color: var(--brass-hi); background: rgba(var(--brass-rgb), .08); }
.lp-menu { display: none; align-items: center; justify-content: center; width: 40px; height: 40px; background: transparent; border: 1px solid var(--rule); border-radius: 999px; color: var(--ink-hi); }

/* 按钮 */
.lp-button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 50px; padding: 0 26px; border: 1px solid transparent; border-radius: 999px; font-size: 15px; font-weight: 550; letter-spacing: .01em; white-space: nowrap; transition: background 180ms ease, border-color 180ms ease, color 180ms ease, box-shadow 180ms ease; }
.lp-button [data-icon] { width: 17px; height: 17px; }
.lp-button-primary { background: linear-gradient(180deg, #F4E2B4, #D8B26E); color: #1B1407; box-shadow: inset 0 1px 0 rgba(255, 255, 255, .45), 0 14px 40px -14px rgba(var(--brass-rgb), .7); }
.lp-button-primary:hover { background: linear-gradient(180deg, #F8EACA, #E2BF80); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .5), 0 18px 48px -14px rgba(var(--brass-rgb), .85); }
.lp-button-ghost { border-color: rgba(var(--brass-rgb), .42); color: var(--brass-hi); background: rgba(4, 7, 15, .3); }
.lp-button-ghost:hover { border-color: var(--brass); background: rgba(var(--brass-rgb), .1); }
.lp-button-ghost [data-icon] svg { fill: currentColor; }
.lp-button-quiet { color: var(--fog); padding-inline: 14px; }
.lp-button-quiet:hover { color: var(--brass-hi); }
.lp-button-small { min-height: 38px; padding: 0 18px; font-size: 13px; border-color: rgba(var(--brass-rgb), .42); color: var(--brass-hi); }
.lp-button-small:hover { border-color: var(--brass); background: rgba(var(--brass-rgb), .1); }

/* 首屏：黎明前的海平线与船队，全站唯一的编排动效。 */
.lp-hero { position: relative; overflow: hidden; min-height: max(780px, calc(100svh - 72px)); display: flex; flex-direction: column; }
.lp-sky { position: absolute; inset: 0; pointer-events: none; background: linear-gradient(to bottom, #03060D 0%, #060C1A 34%, #0E1428 52%, #1A1A30 70%, #3E2F33 79%, #6D4C33 var(--horizon), #0A1020 var(--horizon), var(--abyss) 100%); }
.lp-sky::after { content: ""; position: absolute; left: 0; right: 0; top: var(--horizon); height: 1px; background: linear-gradient(90deg, transparent, rgba(var(--brass-rgb), .55) 22%, var(--brass-hi) 50%, rgba(var(--brass-rgb), .55) 78%, transparent); box-shadow: 0 0 18px 2px rgba(var(--brass-rgb), .35); }
.lp-stars { position: absolute; left: 0; top: 0; width: 100%; height: var(--horizon); fill: #DDE6F5; }
.lp-sun { position: absolute; left: 50%; top: var(--horizon); width: min(1100px, 120vw); height: 520px; transform: translate(-50%, -50%); background: radial-gradient(closest-side, rgba(255, 242, 214, .95), rgba(246, 228, 189, .55) 14%, rgba(230, 170, 110, .22) 42%, rgba(160, 100, 80, .08) 70%, transparent); clip-path: inset(0 0 50% 0); animation: lp-sunrise 3.2s cubic-bezier(.2, .7, .2, 1) both; }
.lp-sea { position: absolute; left: 0; right: 0; top: var(--horizon); bottom: 0; background: repeating-linear-gradient(to bottom, rgba(158, 178, 210, .05) 0 1px, transparent 1px 9px); -webkit-mask-image: linear-gradient(#000, transparent 85%); mask-image: linear-gradient(#000, transparent 85%); }
.lp-glint { position: absolute; left: 50%; top: 0; width: min(520px, 60vw); height: 100%; transform: translateX(-50%); background: repeating-linear-gradient(to bottom, rgba(246, 228, 189, .55) 0 1px, transparent 1px 6px); -webkit-mask-image: radial-gradient(ellipse 50% 90% at 50% 0, #000 20%, transparent 70%); mask-image: radial-gradient(ellipse 50% 90% at 50% 0, #000 20%, transparent 70%); animation: lp-shimmer 6s ease-in-out infinite alternate; }
.lp-fleet { position: absolute; left: 50%; top: var(--horizon); width: 0; height: 0; }
.lp-ship { position: absolute; left: var(--x); bottom: 0; width: calc(clamp(170px, 14vw, 230px) * var(--s)); transform: translate(-50%, 16%); animation: lp-drift 2.6s cubic-bezier(.2, .7, .2, 1) both; animation-delay: calc(.9s + var(--i) * 90ms); }
.lp-ship svg { display: block; width: 100%; height: auto; overflow: visible; filter: drop-shadow(0 0 8px rgba(var(--brass-rgb), .45)); }
.lp-ship path { fill: none; stroke: var(--brass); stroke-width: 1.3; vector-effect: non-scaling-stroke; stroke-linejoin: round; stroke-linecap: round; }
.lp-ship-hull { fill: #060B16 !important; }
.lp-ship-sail { fill: rgba(6, 11, 22, .92) !important; }
.lp-ship-faint { opacity: .45; }
.lp-ship-flag { z-index: 1; animation: lp-bob 7s ease-in-out 3s infinite; }
.lp-ship-flag svg { filter: drop-shadow(0 0 14px rgba(var(--brass-rgb), .6)); }
.lp-ship-flag path { stroke: var(--brass-hi); stroke-width: 1.8; vector-effect: none; stroke-dasharray: 1; stroke-dashoffset: 1; animation: lp-draw 2.4s cubic-bezier(.45, .05, .25, 1) .3s forwards; }
.lp-ship-flag .lp-ship-hull, .lp-ship-flag .lp-ship-sail { fill-opacity: 0; animation: lp-draw 2.4s cubic-bezier(.45, .05, .25, 1) .3s forwards, lp-fill 1.2s ease 2s forwards; }
@keyframes lp-draw { to { stroke-dashoffset: 0; } }
@keyframes lp-fill { to { fill-opacity: 1; } }
@keyframes lp-sunrise { from { transform: translate(-50%, -34%); opacity: .2; } to { transform: translate(-50%, -50%); opacity: 1; } }
@keyframes lp-drift { from { opacity: 0; translate: calc(var(--x) * -.12) 0; } to { opacity: 1; translate: 0 0; } }
@keyframes lp-bob { 0%, 100% { translate: 0 0; } 50% { translate: 0 -3px; } }
@keyframes lp-shimmer { from { opacity: .7; } to { opacity: 1; } }
@keyframes lp-rise { from { opacity: 0; transform: translateY(14px); filter: blur(6px); } to { opacity: 1; transform: none; filter: none; } }

.lp-hero-copy { position: relative; z-index: 2; text-align: center; padding-top: clamp(44px, 8vh, 110px); }
.lp-hero-kicker { color: var(--brass); font: italic 400 17px/1.4 var(--display); letter-spacing: .02em; animation: lp-rise 1.2s ease .1s both; }
.lp-hero h1 { margin: 22px auto 24px; font: 400 clamp(44px, 6vw, 86px)/1.02 var(--display); letter-spacing: -.02em; color: var(--ink-hi); text-wrap: balance; text-shadow: 0 2px 40px rgba(4, 7, 15, .6); animation: lp-rise 1.4s ease .25s both; }
.lp-hero h1 > span { display: block; }
.lp-hero-description { max-width: 620px; margin-inline: auto; color: var(--fog); font-size: 17px; line-height: 1.75; animation: lp-rise 1.4s ease .45s both; }
.lp-hero-actions { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 34px; animation: lp-rise 1.4s ease .6s both; }
.lp-platform { margin-top: 18px; color: var(--dim); font-size: 13px; animation: lp-rise 1.4s ease .7s both; }
.lp-sep { display: inline-block; width: 3px; height: 3px; margin: 0 12px; border-radius: 50%; background: var(--dim); vertical-align: middle; }
.lp-install-link { display: inline-block; margin-top: 10px; color: var(--brass); font-size: 13px; }
.lp-install-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.lp-desktop-break { display: inline; }
html[lang="zh-CN"] .lp-hero h1 { letter-spacing: .02em; font-weight: 500; line-height: 1.16; }
html[lang="zh-CN"] .lp-hero-kicker { font-style: normal; letter-spacing: .12em; }

/* 章节通用排版 */
.lp-film h2, .lp-showcase h2, .lp-voyage-intro h2, .lp-faq h2, .lp-final-cta h2 { font: 400 clamp(34px, 4vw, 56px)/1.1 var(--display); letter-spacing: -.015em; color: var(--ink-hi); text-wrap: balance; }
html[lang="zh-CN"] :is(.lp-film h2, .lp-showcase h2, .lp-voyage-intro h2, .lp-faq h2, .lp-final-cta h2, .lp-chapter h3) { letter-spacing: .02em; font-weight: 500; }

/* 短片 */
.lp-film { padding: 96px 0 40px; }
.lp-film-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; margin-bottom: 36px; }
.lp-film-heading p { max-width: 380px; color: var(--fog); font-size: 15px; }
.lp-film-frame { position: relative; aspect-ratio: 16 / 9; border-radius: 18px; overflow: hidden; background: #03050A; border: 1px solid rgba(var(--brass-rgb), .2); box-shadow: 0 70px 140px -60px rgba(var(--brass-rgb), .28), 0 0 0 1px rgba(4, 7, 15, .6); }
.lp-film-frame video { display: block; width: 100%; height: 100%; object-fit: cover; }
.lp-film-play { position: absolute; left: 28px; bottom: 28px; display: inline-flex; align-items: center; gap: 14px; padding: 8px 22px 8px 8px; border-radius: 999px; font-size: 15px; font-weight: 550; border: 1px solid rgba(var(--brass-rgb), .6); background: rgba(4, 7, 15, .45); color: var(--brass-hi); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); transition: transform 220ms ease, background 220ms ease, box-shadow 220ms ease; }
.lp-film-play [data-icon] { width: 48px; height: 48px; padding: 15px 13px 15px 17px; border-radius: 50%; background: var(--brass); color: #1B1407; }
.lp-film-play [data-icon] svg { fill: currentColor; }
.lp-film-play:hover { background: rgba(var(--brass-rgb), .16); box-shadow: 0 0 0 8px rgba(var(--brass-rgb), .06); }
.lp-film-play small { color: var(--fog); font: 13px var(--mono); }

/* 真实产品演示 */
.lp-showcase { padding: 110px 0 40px; scroll-margin-top: 72px; }
.lp-showcase-heading { display: flex; align-items: flex-end; justify-content: space-between; flex-wrap: wrap; gap: 20px 40px; margin-bottom: 30px; }
.lp-demo-label { margin-top: 14px; color: var(--fog); font-size: 15px; }
.lp-demo-tools { display: flex; align-items: center; gap: 22px; font-size: 14px; }
.lp-guide-replay { padding: 0; border: 0; background: none; color: var(--fog); }
.lp-guide-replay:hover { color: var(--brass-hi); }
.lp-demo-fullscreen { display: inline-flex; align-items: center; gap: 6px; color: var(--brass); font-weight: 550; }
.lp-demo-fullscreen [data-icon] { width: 15px; height: 15px; }
.lp-demo-fullscreen:hover { color: var(--brass-hi); }
.lp-demo-stage { position: relative; }
.lp-window { border-radius: 14px; overflow: hidden; border: 1px solid rgba(var(--brass-rgb), .22); background: var(--night); box-shadow: 0 60px 120px -50px rgba(var(--brass-rgb), .25), 0 30px 60px -30px rgba(0, 0, 0, .8); }
.lp-demo-frame { display: block; width: 100%; height: 720px; border: 0; }
.lp-demo-caption { max-width: 640px; margin: 22px auto 0; text-align: center; color: var(--dim); font-size: 13px; }
/* 指引只覆盖演示区域；目标留亮，原版按钮仍可直接点击。 */
.lp-guide { position: absolute; inset: 0; z-index: 6; overflow: hidden; border-radius: 14px; pointer-events: none; opacity: 0; transition: opacity 240ms ease; }
.lp-guide.is-visible { opacity: 1; }
.lp-guide-spot { position: absolute; border-radius: 11px; box-shadow: 0 0 0 2000px rgba(2, 4, 10, .5), 0 0 0 2px var(--brass); }
.lp-guide-card { position: absolute; width: min(320px, calc(100% - 24px)); padding: 24px; background: var(--deep); color: var(--ink-hi); border: 1px solid rgba(var(--brass-rgb), .3); border-radius: 16px; box-shadow: 0 24px 60px -20px rgba(0, 0, 0, .8); pointer-events: auto; transform: translateY(8px); transition: transform 420ms cubic-bezier(.22, 1, .36, 1); }
.lp-guide.is-visible .lp-guide-card { transform: translateY(0); }
.lp-guide:not(.is-visible) .lp-guide-card { pointer-events: none; }
.lp-guide-card::before { content: ""; position: absolute; left: -6px; top: 24px; width: 10px; height: 10px; background: var(--deep); border-left: 1px solid rgba(var(--brass-rgb), .3); border-bottom: 1px solid rgba(var(--brass-rgb), .3); transform: rotate(45deg); }
.lp-guide.is-below .lp-guide-card::before { left: 25px; top: -6px; transform: rotate(135deg); }
.lp-guide-eyebrow { color: var(--brass); font: italic 14px var(--display); }
.lp-guide-card h3 { margin: 6px 0 10px; font: 400 23px/1.3 var(--display); }
.lp-guide-card > p:not(.lp-guide-eyebrow) { color: var(--fog); font-size: 14px; line-height: 1.7; }
.lp-guide-actions { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 20px; }
.lp-guide-actions button { min-height: 38px; border: 0; border-radius: 999px; padding: 0 16px; font-size: 13px; }
.lp-guide-skip { background: none; color: var(--fog); }
.lp-guide-skip:hover { color: var(--ink-hi); }
.lp-guide-start { display: inline-flex; align-items: center; gap: 8px; background: var(--brass); color: #1B1407; font-weight: 550; }
.lp-guide-start:hover { background: var(--brass-hi); }
.lp-guide-start [data-icon] { width: 14px; height: 14px; }

/* 航程：五个章节对应短片的五幕 */
.lp-voyage { padding: 150px 0 40px; }
.lp-voyage-intro { max-width: 760px; margin-bottom: 40px; }
.lp-voyage-intro p { margin-top: 22px; color: var(--fog); font-size: 17px; }
.lp-chapter { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); align-items: center; gap: 72px; padding: 88px 0; border-top: 1px solid var(--rule); scroll-margin-top: 72px; }
.lp-chapter-mark { display: flex; align-items: baseline; gap: 14px; color: var(--fog); font-size: 14px; letter-spacing: .04em; }
.lp-chapter-mark > span { color: var(--brass); font: 400 15px var(--display); font-variant-numeric: oldstyle-nums; }
.lp-chapter-mark::after { content: ""; flex: 0 0 48px; height: 1px; background: rgba(var(--brass-rgb), .4); align-self: center; }
.lp-chapter h3 { margin: 22px 0 18px; font: 400 clamp(28px, 2.9vw, 40px)/1.18 var(--display); letter-spacing: -.01em; text-wrap: balance; }
.lp-chapter-text > p:not(.lp-chapter-mark) { max-width: 46ch; color: var(--fog); font-size: 16px; line-height: 1.8; }
.lp-chapter-text > .lp-chapter-note { margin-top: 18px; padding-left: 14px; border-left: 1px solid rgba(var(--brass-rgb), .35); color: var(--dim); font-size: 14px; }
.lp-chapter-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 26px; color: var(--brass); font-size: 14px; font-weight: 550; }
.lp-chapter-link [data-icon] { width: 15px; height: 15px; transition: transform 180ms ease; }
.lp-chapter-link:hover { color: var(--brass-hi); }
.lp-chapter-link:hover [data-icon] { transform: translateX(3px); }
/* 海图面板：经纬网格呼应航海图，所有章节视觉共用。 */
.lp-chart { position: relative; border: 1px solid var(--rule); border-radius: 18px; background: radial-gradient(120% 80% at 50% 0, rgba(28, 46, 76, .45), transparent 70%), linear-gradient(var(--rule-2) 1px, transparent 1px) 0 0 / 44px 44px, linear-gradient(90deg, var(--rule-2) 1px, transparent 1px) 0 0 / 44px 44px, var(--night); }

.lp-agent-icon { width: 36px; height: 36px; padding: 7px; border-radius: 10px; flex-shrink: 0; }
/* 图形来自 AgentIcon.svelte，底色与产品 Agent 选择器保持一致。 */
.lp-agent-claude { background: linear-gradient(135deg, #d97757, #c15f3c); }
.lp-agent-codex { background: linear-gradient(135deg, #10a37f, #0c8064); }
.lp-agent-opencode { background: linear-gradient(135deg, #2b2727, #131010); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .12); }
.lp-agent-pi { background: linear-gradient(135deg, #4b607c, #252f3d); }
.lp-agent-grok { background: linear-gradient(135deg, #1a1a1a, #0a0a0a); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .12); }
.lp-agent-trae { padding: 0; background: #0d0d0d; }

.lp-orbit { aspect-ratio: 6 / 5; container-type: inline-size; overflow: hidden; }
.lp-orbit-ring { position: absolute; left: 50%; top: 50%; width: 62cqw; aspect-ratio: 1; transform: translate(-50%, -50%); border: 1px solid rgba(var(--brass-rgb), .22); border-radius: 50%; }
.lp-orbit-ring + .lp-orbit-ring { width: 36cqw; border-style: dashed; border-color: rgba(var(--brass-rgb), .16); }
.lp-orbit-center { position: absolute; left: 50%; top: 50%; width: 92px; height: 92px; transform: translate(-50%, -50%); display: flex; align-items: center; justify-content: center; border-radius: 50%; border: 1px solid var(--brass); background: radial-gradient(circle, rgba(var(--brass-rgb), .2), var(--night) 70%); box-shadow: 0 0 0 8px rgba(var(--brass-rgb), .06), 0 0 60px rgba(var(--brass-rgb), .3); color: var(--brass-hi); font: 400 26px var(--display); }
.lp-orbit-node { position: absolute; left: 50%; top: 50%; display: flex; flex-direction: column; align-items: center; gap: 6px; transform: translate(-50%, -50%) rotate(var(--a)) translateX(31cqw) rotate(calc(var(--a) * -1)); }
.lp-orbit-node b { position: absolute; top: 100%; margin-top: 6px; font-size: 13px; font-weight: 550; color: var(--ink-hi); white-space: nowrap; }

.lp-board { padding: 12px; display: grid; gap: 8px; }
.lp-board-row { display: grid; grid-template-columns: 138px minmax(0, 1fr) auto; align-items: center; gap: 16px; padding: 14px 16px; border-radius: 12px; background: rgba(16, 27, 48, .72); border: 1px solid var(--rule-2); }
.lp-board-row > b { font-size: 14px; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lp-board-agent { display: inline-flex; align-items: center; gap: 8px; color: var(--fog); font-size: 12.5px; white-space: nowrap; }
.lp-board-agent .lp-agent-icon { width: 20px; height: 20px; padding: 4px; border-radius: 6px; }
.lp-board-alert { border-color: rgba(227, 180, 92, .45); background: linear-gradient(90deg, rgba(227, 180, 92, .1), rgba(16, 27, 48, .72) 60%); }
.lp-board-ask { grid-column: 2 / -1; color: var(--signal); font-size: 12.5px; margin-top: -8px; }
.lp-board-done { opacity: .55; }
.lp-state { display: inline-flex; align-items: center; gap: 8px; color: var(--dim); font-size: 12.5px; white-space: nowrap; }
.lp-state::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; flex-shrink: 0; }
.lp-state-run { color: var(--tide); }
.lp-state-run::before { box-shadow: 0 0 0 0 rgba(95, 212, 208, .6); animation: lp-pulse 2s ease-out infinite; }
.lp-state-ask { color: var(--signal); }
.lp-state-review { color: var(--brass); }
@keyframes lp-pulse { to { box-shadow: 0 0 0 8px rgba(95, 212, 208, 0); } }

.lp-harbor { padding: 28px 28px 24px; }
.lp-branch { display: block; width: 100%; height: auto; overflow: visible; }
.lp-branch path { fill: none; stroke-width: 2; }
.lp-branch-main { stroke: rgba(151, 163, 184, .5); }
.lp-branch-copy { stroke: var(--brass); }
.lp-branch circle { fill: var(--night); stroke: var(--brass); stroke-width: 2; }
.lp-branch .lp-branch-merge { fill: var(--brass); filter: drop-shadow(0 0 8px rgba(var(--brass-rgb), .8)); }
.lp-branch-label { position: absolute; font: 12.5px var(--mono); color: var(--fog); }
.lp-branch-label-main { left: 32px; top: calc(28px + 29%); }
.lp-branch-label-copy { left: 34%; top: 28px; color: var(--brass); font-family: var(--sans); }
.lp-diff { margin-top: 18px; display: grid; border-radius: 10px; overflow: hidden; border: 1px solid var(--rule); background: #060B16; }
.lp-diff code { display: block; padding: 7px 14px; font: 12.5px/1.6 var(--mono); color: #C9CFDA; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; background: rgba(224, 101, 92, .1); }
.lp-diff code i { font-style: normal; color: var(--coral); margin-right: 8px; }
.lp-diff .lp-diff-add { background: rgba(134, 199, 154, .1); }
.lp-diff .lp-diff-add i { color: var(--kelp); }
.lp-harbor-actions { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.lp-harbor-actions span { padding: 7px 14px; border-radius: 999px; border: 1px solid var(--rule); color: var(--fog); font-size: 12.5px; }
.lp-harbor-actions .lp-harbor-go { background: var(--brass); border-color: var(--brass); color: #1B1407; font-weight: 600; }

.lp-deck { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); overflow: hidden; background: var(--night); }
.lp-deck a { display: grid; grid-template-columns: 22px minmax(0, 1fr); column-gap: 14px; row-gap: 2px; padding: 22px 24px; border-bottom: 1px solid var(--rule-2); transition: background 180ms ease; }
.lp-deck a:nth-child(odd) { border-right: 1px solid var(--rule-2); }
.lp-deck a:nth-last-child(-n + 2) { border-bottom: 0; }
.lp-deck [data-icon] { grid-row: span 2; width: 20px; height: 20px; margin-top: 2px; color: var(--brass); }
.lp-deck b { font-size: 15px; font-weight: 550; transition: color 180ms ease; }
.lp-deck small { color: var(--dim); font-size: 13px; line-height: 1.5; }
.lp-deck a:hover { background: rgba(var(--brass-rgb), .06); }
.lp-deck a:hover b { color: var(--brass-hi); }

.lp-home { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 26px; min-height: 380px; padding: 40px 24px; }
.lp-home-globe { position: relative; width: 230px; height: 230px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; border-radius: 50%; border: 1px solid rgba(var(--brass-rgb), .6); background: radial-gradient(circle, rgba(var(--brass-rgb), .1), transparent 70%); box-shadow: 0 0 80px rgba(var(--brass-rgb), .18); text-align: center; }
.lp-home-globe::before, .lp-home-globe::after { content: ""; position: absolute; inset: -1px 32%; border: 1px solid rgba(var(--brass-rgb), .12); border-radius: 50%; }
.lp-home-globe::after { inset: 32% -1px; }
.lp-home-globe strong { position: relative; z-index: 1; text-shadow: 0 0 18px var(--night), 0 0 6px var(--night); font: 400 30px/1.1 var(--display); color: var(--brass-hi); }
.lp-home-globe span { position: relative; z-index: 1; max-width: 170px; text-shadow: 0 0 10px var(--night); color: var(--fog); font-size: 12.5px; }
.lp-home > p { color: var(--dim); font-size: 13px; letter-spacing: .04em; }

/* 常见问题 */
.lp-faq { padding: 48px 0 120px; }
.lp-faq-inner { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.7fr); gap: 80px; border-top: 1px solid var(--rule); padding-top: 88px; }
.lp-faq-list { min-width: 0; }
.lp-faq details { border-bottom: 1px solid var(--rule); padding-block: 24px; }
.lp-faq details:first-child { padding-top: 0; }
.lp-faq summary { position: relative; padding-right: 36px; cursor: pointer; list-style: none; font-size: 17px; font-weight: 500; color: var(--ink-hi); }
.lp-faq summary::-webkit-details-marker { display: none; }
.lp-faq summary::after { content: "+"; position: absolute; right: 4px; top: -3px; color: var(--brass); font: 300 24px var(--wordmark); transition: transform 200ms ease; }
.lp-faq details[open] summary::after { transform: rotate(45deg); }
.lp-faq summary:hover { color: var(--brass-hi); }
.lp-faq details p { margin-top: 14px; color: var(--fog); font-size: 15px; line-height: 1.8; }
.lp-faq details strong { color: var(--ink-hi); font-weight: 550; }
.lp-faq code { font: 13px var(--mono); color: var(--brass-hi); }
.lp-install-command { margin-top: 18px; border: 1px solid var(--rule); border-radius: 12px; overflow: hidden; background: #060B16; }
.lp-install-command-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 14px; border-bottom: 1px solid var(--rule); color: var(--dim); font-size: 12.5px; }
.lp-install-command-header button { padding: 5px 12px; border: 1px solid rgba(var(--brass-rgb), .4); border-radius: 999px; background: transparent; color: var(--brass); font-size: 12.5px; }
.lp-install-command-header button:hover { background: rgba(var(--brass-rgb), .1); }
.lp-install-command-header button:disabled { cursor: wait; opacity: .65; }
.lp-install-command pre { margin: 0; padding: 16px 14px; white-space: pre-wrap; overflow-wrap: anywhere; }
.lp-install-command pre code { font: 13.5px/1.8 var(--mono); color: var(--ink-hi); }
.lp-install-status { margin-top: 10px; color: var(--brass); font-size: 13px; }
.lp-install-status:empty { display: none; }
.lp-faq details .lp-install-note { font-size: 13.5px; color: var(--dim); }

/* 收尾：船驶向晨光 */
.lp-final-cta { position: relative; overflow: hidden; padding: 140px 0 300px; text-align: center; background: linear-gradient(to bottom, var(--abyss), #0A0F20 45%, #2A2233 78%, #6D4C33 calc(100% - 110px), #070C18 calc(100% - 110px), var(--abyss)); }
.lp-dawn { position: absolute; left: 0; right: 0; bottom: 110px; height: 1px; background: linear-gradient(90deg, transparent, rgba(var(--brass-rgb), .6) 25%, var(--brass-hi) 50%, rgba(var(--brass-rgb), .6) 75%, transparent); box-shadow: 0 0 20px 2px rgba(var(--brass-rgb), .35); }
.lp-dawn::before { content: ""; position: absolute; left: 50%; bottom: 0; width: 760px; height: 260px; transform: translateX(-50%); background: radial-gradient(ellipse at 50% 100%, rgba(255, 238, 205, .7), rgba(230, 170, 110, .18) 40%, transparent 70%); }
.lp-dawn-ship { position: absolute; left: 50%; bottom: 0; width: 150px; transform: translate(-30%, 14%); }
.lp-dawn-ship svg { display: block; width: 100%; height: auto; overflow: visible; filter: drop-shadow(0 0 10px rgba(var(--brass-rgb), .55)); }
.lp-dawn-ship path { fill: none; stroke: var(--brass-hi); stroke-width: 1.2; vector-effect: non-scaling-stroke; stroke-linejoin: round; }
.lp-dawn-ship .lp-ship-hull, .lp-dawn-ship .lp-ship-sail { fill: #070C18; }
.lp-dawn-ship .lp-ship-faint { opacity: .45; }
.lp-final-copy { position: relative; z-index: 1; }
.lp-final-kicker { color: var(--brass); font: italic 18px var(--display); }
html[lang="zh-CN"] .lp-final-kicker { font-style: normal; letter-spacing: .12em; }
.lp-final-cta h2 { max-width: 820px; margin: 18px auto 20px; }
.lp-final-cta p:not(.lp-final-kicker):not(.lp-platform) { color: var(--fog); font-size: 17px; }

/* 页脚 */
.lp-footer { border-top: 1px solid var(--rule-2); }
.lp-footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 30px; color: var(--dim); font-size: 13px; }
.lp-footer-inner > div { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.lp-footer .lp-wordmark { font-size: 15px; }
.lp-footer a:hover { color: var(--brass-hi); }

/* 404 等简单页面复用首屏排版，不加载船队场景。 */
.lp-eyebrow { color: var(--brass); font: italic 17px var(--display); }

/* 矮屏（如 1280×720）压缩首屏文字，让船队留在首屏内。 */
@media (min-width: 861px) and (max-height: 820px) {
  .lp-hero { min-height: max(600px, calc(100svh - 72px)); }
  .lp-hero-copy { padding-top: 5vh; }
  .lp-hero h1 { margin: 14px auto 16px; font-size: clamp(40px, 8.6vh, 76px); }
  .lp-hero-description { font-size: 15.5px; }
  .lp-hero-actions { margin-top: 22px; }
  .lp-button { min-height: 46px; }
  .lp-platform { margin-top: 12px; }
  .lp-ship { width: calc(clamp(140px, 17vh, 200px) * var(--s)); }
}
@media (max-width: 1100px) {
  .lp-container { width: calc(100% - 64px); }
  .lp-nav { gap: 24px; }
  .lp-chapter { gap: 48px; }
  .lp-header-download { display: none; }
}
@media (max-width: 860px) {
  .lp-container { width: calc(100% - 40px); }
  .lp-header { height: 64px; }
  .lp-menu { display: flex; }
  .lp-nav { display: none; position: absolute; top: 63px; left: 0; right: 0; padding: 18px 20px 22px; background: rgba(4, 7, 15, .96); border-bottom: 1px solid var(--rule); }
  .lp-nav.lp-nav-open { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px 26px; }
  .lp-hero { min-height: 0; --horizon: calc(100% - 96px); }
  .lp-hero-copy { padding-bottom: 250px; }
  .lp-ship { width: calc(170px * var(--s)); }
  .lp-ship:nth-child(1), .lp-ship:nth-child(7) { display: none; }
  .lp-film, .lp-showcase { padding-top: 80px; }
  .lp-film-heading { display: block; }
  .lp-film-heading p { margin-top: 14px; }
  .lp-voyage { padding-top: 100px; }
  .lp-chapter { grid-template-columns: 1fr; gap: 36px; padding: 64px 0; }
  .lp-faq { padding: 32px 0 80px; }
  .lp-faq-inner { grid-template-columns: 1fr; gap: 36px; padding-top: 64px; }
  .lp-final-cta { padding: 100px 0 260px; }
  .lp-footer-inner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 560px) {
  .lp-desktop-break { display: none; }
  .lp-hero-kicker { font-size: 15px; }
  .lp-hero-description { font-size: 15.5px; }
  .lp-button { min-height: 46px; padding-inline: 20px; font-size: 14px; }
  .lp-button-quiet { width: 100%; }
  .lp-platform { font-size: 12px; }
  .lp-sep { display: block; height: 0; margin: 0; }
  .lp-ship { width: calc(130px * var(--s)); }
  .lp-ship:nth-child(3), .lp-ship:nth-child(5) { display: none; }
  .lp-ship:nth-child(2), .lp-ship:nth-child(6) { --s: .42; }
  .lp-film-frame { border-radius: 12px; }
  .lp-film-play { left: 12px; bottom: 12px; gap: 10px; padding-right: 14px; }
  .lp-film-play > span:not([data-icon]) { display: none; }
  .lp-film-play [data-icon] { width: 38px; height: 38px; padding: 11px 9px 11px 13px; }
  .lp-demo-frame { height: 900px; }
  .lp-board-row { grid-template-columns: 1fr auto; row-gap: 6px; padding: 12px 14px; }
  .lp-board-row > b { grid-column: 1 / -1; grid-row: 2; white-space: normal; }
  .lp-board-ask { grid-column: 1 / -1; grid-row: 3; margin-top: 0; }
  .lp-orbit { aspect-ratio: 1; }
  .lp-orbit-node { transform: translate(-50%, -50%) rotate(var(--a)) translateX(36cqw) rotate(calc(var(--a) * -1)); }
  .lp-orbit-node b { font-size: 11.5px; }
  .lp-agent-icon { width: 30px; height: 30px; padding: 6px; }
  .lp-orbit-center { width: 72px; height: 72px; font-size: 22px; }
  .lp-branch-label-main { top: calc(28px + 24%); }
  .lp-deck { grid-template-columns: 1fr; }
  .lp-deck a:nth-child(odd) { border-right: 0; }
  .lp-deck a:nth-last-child(2) { border-bottom: 1px solid var(--rule-2); }
  .lp-home-globe { width: 200px; height: 200px; }
  .lp-faq summary { font-size: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-delay: 0s !important; animation-iteration-count: 1 !important; transition: none !important; }
}