/* 新倚天屠龙记 · 青墨江湖视觉系统 */
:root {
  --bg: #071318;
  --bg-deep: #040b0e;
  --bg-soft: #0c2026;
  --panel: rgba(17, 42, 48, .74);
  --panel-solid: #10272d;
  --ink: #f3f0e7;
  --ink-soft: #d5d3c9;
  --muted: #98a9aa;
  --cyan: #78c5c2;
  --cyan-deep: #2d7c80;
  --gold: #d8b36a;
  --gold-light: #f2d99d;
  --red: #c65346;
  --line: rgba(140, 197, 194, .18);
  --line-gold: rgba(216, 179, 106, .28);
  --shadow: 0 24px 80px rgba(0, 0, 0, .4);
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  min-width: 320px;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--font);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
body.lightbox-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, video { font: inherit; }
button { color: inherit; cursor: pointer; }
svg { display: block; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
::selection { color: #061114; background: var(--cyan); }

.skip-link { position: fixed; top: -60px; left: 20px; z-index: 999; padding: 10px 16px; color: var(--bg-deep); background: var(--gold-light); border-radius: 0 0 8px 8px; transition: top .2s; }
.skip-link:focus { top: 0; }
.page-texture { position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: .22; background-image: radial-gradient(rgba(214, 235, 230, .28) .55px, transparent .75px); background-size: 5px 5px; mask-image: linear-gradient(to bottom, #000, transparent 84%); }
.container { position: relative; z-index: 2; width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.section { position: relative; padding: 112px 0; }

.eyebrow { display: flex; align-items: center; gap: 12px; color: var(--cyan); font-size: .72rem; font-weight: 700; letter-spacing: .28em; text-transform: uppercase; }
.eyebrow > span { width: 32px; height: 1px; background: linear-gradient(90deg, transparent, var(--cyan)); }
.eyebrow.centered { justify-content: center; }
.eyebrow.centered span:last-child { transform: rotate(180deg); }
.section-heading { max-width: 700px; margin: 0 auto 54px; text-align: center; }
.section-heading h2, .story-copy h2, .video-copy h2, .download h2 { margin: 12px 0; font-size: clamp(2rem, 4.2vw, 3.5rem); font-weight: 900; letter-spacing: .08em; line-height: 1.2; }
.section-heading h2 em, .story-copy h2 em, .video-copy h2 em, .download h2 em { color: var(--gold-light); font-family: "STKaiti", "KaiTi", serif; font-style: normal; font-weight: 700; }
.section-heading > p:last-child { color: var(--muted); }
.section-heading-row { display: flex; max-width: none; align-items: end; justify-content: space-between; margin-bottom: 46px; text-align: left; }
.section-heading-row > p { max-width: 480px; padding-bottom: 14px; color: var(--muted); }
.section-heading-row h2 { margin-bottom: 0; }

/* 导航 */
.navbar { position: fixed; inset: 0 0 auto; z-index: 100; padding: 14px 0; border-bottom: 1px solid transparent; background: linear-gradient(180deg, rgba(4, 11, 14, .82), transparent); transition: padding .3s, background .3s, border-color .3s; }
.navbar.is-scrolled { padding: 8px 0; border-color: var(--line); background: rgba(5, 15, 19, .9); box-shadow: 0 8px 36px rgba(0, 0, 0, .16); backdrop-filter: blur(18px); }
.nav-inner { display: flex; width: min(1260px, calc(100% - 48px)); align-items: center; gap: 24px; margin-inline: auto; }
.brand { display: flex; flex-shrink: 0; align-items: center; gap: 11px; }
.brand img { width: 44px; height: 44px; border: 1px solid var(--line-gold); border-radius: 11px; object-fit: cover; box-shadow: 0 8px 22px rgba(0, 0, 0, .28); }
.brand > span { font-family: "STKaiti", "KaiTi", var(--font); font-size: 1.2rem; font-weight: 900; letter-spacing: .06em; line-height: 1.1; }
.brand small { display: block; margin-top: 5px; color: var(--gold); font-family: var(--font); font-size: .57rem; font-weight: 500; letter-spacing: .2em; }
.nav-links { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.nav-links a { position: relative; padding: 9px 12px; color: var(--ink-soft); font-size: .9rem; transition: color .2s; white-space: nowrap; }
.nav-links a::after { position: absolute; right: 12px; bottom: 3px; left: 12px; height: 1px; background: var(--gold); content: ""; transform: scaleX(0); transition: transform .25s; }
.nav-links a:hover, .nav-links a:focus-visible, .nav-links a.is-active { color: #fff; }
.nav-links a:hover::after, .nav-links a:focus-visible::after, .nav-links a.is-active::after { transform: scaleX(1); }
.nav-toggle { display: none; width: 42px; height: 42px; flex-direction: column; align-items: center; justify-content: center; gap: 5px; margin-left: auto; border: 1px solid var(--line); border-radius: 11px; background: rgba(255, 255, 255, .05); }
.nav-toggle span { width: 20px; height: 1.5px; background: currentColor; transition: transform .25s, opacity .25s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: 10px; padding: 0 25px; border: 1px solid transparent; border-radius: 6px; font-weight: 800; letter-spacing: .08em; transition: color .25s, background .25s, border-color .25s, box-shadow .25s, transform .25s; }
.button svg { width: 20px; height: 20px; }
.button:focus-visible, button:focus-visible, a:focus-visible { outline: 2px solid var(--gold-light); outline-offset: 3px; }
.button-gold { color: #152124; background: linear-gradient(135deg, #bd914b, var(--gold-light) 52%, #c99b52); box-shadow: 0 12px 30px rgba(216, 179, 106, .24); }
.button-gold:hover { box-shadow: 0 16px 38px rgba(216, 179, 106, .38); transform: translateY(-2px); }
.button-glass { border-color: rgba(255, 255, 255, .24); background: rgba(8, 22, 26, .36); backdrop-filter: blur(10px); }
.button-glass:hover { border-color: var(--cyan); background: rgba(63, 137, 139, .18); }
.nav-cta { min-height: 40px; padding: 0 18px; font-size: .86rem; }

/* Hero */
.hero { position: relative; display: flex; min-height: 900px; height: 100svh; align-items: center; overflow: hidden; padding: 125px 0 110px; background: var(--bg-deep); }
.hero-slider, .hero-slide, .hero-shade { position: absolute; inset: 0; }
.hero-slide { opacity: 0; background-image: var(--hero-image); background-position: center; background-size: cover; transform: scale(1.02); transition: opacity 1.2s ease; }
.hero-slide.is-active { opacity: 1; animation: heroZoom 8s ease-out forwards; }
.hero-slide-square { background-position: 68% center; }
@keyframes heroZoom { from { transform: scale(1.02); } to { transform: scale(1.09); } }
.hero-shade { z-index: 1; background: linear-gradient(90deg, rgba(4, 11, 14, .95) 3%, rgba(4, 11, 14, .78) 38%, rgba(4, 11, 14, .15) 75%), linear-gradient(0deg, #071318 0, transparent 32%, rgba(4, 11, 14, .58) 100%); }
.hero-cloud { position: absolute; z-index: 1; width: 620px; height: 160px; opacity: .13; border-radius: 50%; background: #c3dedb; filter: blur(60px); animation: cloudMove 13s ease-in-out infinite alternate; }
.cloud-one { top: 20%; right: -10%; }
.cloud-two { bottom: 12%; left: -22%; animation-delay: -5s; }
@keyframes cloudMove { to { transform: translateX(70px) scale(1.08); } }
.hero-content { z-index: 3; }
.hero-content h1 { max-width: 760px; margin: 17px 0 7px; font-family: "STXingkai", "华文行楷", "FZKai-Z03", "KaiTi", serif; font-size: clamp(3.1rem, 7vw, 6.5rem); font-weight: 400; letter-spacing: .12em; line-height: 1; text-shadow: 0 8px 50px rgba(0, 0, 0, .68); }
.hero-content h1 em { color: var(--gold-light); font-size: .66em; font-style: normal; text-shadow: 0 0 32px rgba(216, 179, 106, .2); }
.hero-lead { margin-top: 20px; color: var(--cyan); font-size: 1.05rem; font-weight: 800; letter-spacing: .32em; }
.hero-copy { max-width: 560px; margin-top: 12px; color: var(--ink-soft); font-size: 1rem; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 14px 24px; margin-top: 24px; color: var(--ink-soft); font-size: .88rem; }
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.signal { width: 7px; height: 7px; border-radius: 50%; box-shadow: 0 0 12px currentColor; }
.signal-gold { color: var(--gold); background: var(--gold); }
.signal-red { color: var(--red); background: var(--red); }
.signal-blue { color: var(--cyan); background: var(--cyan); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.hero-download { position: relative; display: flex; }
.hero-download::after { position: absolute; top: 0; right: -12px; width: 12px; height: 100%; content: ""; }
.hero-qr-panel { position: absolute; z-index: 12; top: 50%; left: calc(100% + 12px); visibility: hidden; width: 148px; padding: 10px; border: 1px solid var(--line-gold); border-radius: 10px; opacity: 0; color: #142326; background: #f5f2e9; box-shadow: 0 18px 48px rgba(0, 0, 0, .46); text-align: center; pointer-events: none; transform: translate(8px, -50%); transition: opacity .2s, transform .2s, visibility .2s; }
.hero-qr-panel strong, .hero-qr-panel span { display: block; }
.hero-qr-panel strong { margin-top: 7px; font-size: .76rem; letter-spacing: .08em; }
.hero-qr-panel span { color: #617073; font-size: .6rem; }
.hero-qr { width: 126px; height: 126px; }
.qr-canvas { display: grid; place-items: center; overflow: hidden; color: #5b696b; background: #fff; font-size: .67rem; line-height: 1.4; }
.qr-canvas canvas, .qr-canvas img { display: block !important; width: 100% !important; height: 100% !important; }
@media (hover: hover) and (pointer: fine) and (min-width: 821px) {
  .hero-download:hover .hero-qr-panel, .hero-download:focus-within .hero-qr-panel { visibility: visible; opacity: 1; transform: translate(0, -50%); }
}
.countdown-card { width: min(520px, 100%); margin-top: 38px; padding: 15px 18px; border: 1px solid rgba(216, 179, 106, .22); border-radius: 10px; background: linear-gradient(105deg, rgba(13, 36, 41, .78), rgba(8, 19, 22, .5)); backdrop-filter: blur(12px); }
.countdown-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 9px; color: var(--gold-light); font-size: .76rem; letter-spacing: .16em; }
.countdown-head small { color: var(--muted); font-size: .69rem; font-weight: 400; }
.countdown { display: flex; align-items: center; gap: 10px; }
.countdown > span { display: flex; align-items: baseline; gap: 5px; }
.countdown strong { font-variant-numeric: tabular-nums; font-size: 1.8rem; letter-spacing: .08em; line-height: 1; }
.countdown small { color: var(--muted); font-size: .7rem; }
.countdown b { color: var(--gold); font-weight: 400; opacity: .45; }
.hero-controls { position: absolute; z-index: 4; right: max(24px, calc((100% - 1180px) / 2)); bottom: 116px; display: flex; flex-direction: column; gap: 10px; }
.hero-controls button { width: 7px; height: 7px; border: 0; border-radius: 99px; background: rgba(255, 255, 255, .34); transition: height .25s, background .25s; }
.hero-controls button.is-active { height: 30px; background: linear-gradient(var(--cyan), var(--gold)); }
.scroll-guide { position: absolute; z-index: 4; bottom: 20px; left: 50%; display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: .58rem; letter-spacing: .28em; transform: translateX(-50%); writing-mode: vertical-rl; }
.scroll-guide i { width: 1px; height: 32px; background: linear-gradient(var(--cyan), transparent); animation: scrollLine 1.8s ease-in-out infinite; }
@keyframes scrollLine { 0%, 100% { transform: scaleY(.2); transform-origin: top; } 50% { transform: scaleY(1); transform-origin: top; } }

/* 亮点条 */
.honor-strip { position: relative; z-index: 5; padding: 0; transform: translateY(-1px); }
.honor-grid { display: grid; grid-template-columns: repeat(4, 1fr); overflow: hidden; border: 1px solid var(--line); border-radius: 15px; background: rgba(5, 18, 22, .9); box-shadow: var(--shadow); }
.honor-grid article { display: flex; min-width: 0; align-items: center; gap: 14px; padding: 26px 22px; border-right: 1px solid var(--line); }
.honor-grid article:last-child { border-right: 0; }
.honor-grid svg { width: 33px; height: 33px; flex: 0 0 auto; color: var(--gold); }
.honor-grid strong, .honor-grid span { display: block; }
.honor-grid strong { overflow: hidden; font-size: .96rem; text-overflow: ellipsis; white-space: nowrap; }
.honor-grid span { color: var(--muted); font-size: .73rem; }

/* 福利 */
.welfare { background: radial-gradient(circle at 48% 46%, rgba(44, 113, 116, .12), transparent 48%); }
.benefit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.benefit-card { position: relative; min-height: 340px; overflow: hidden; padding: 34px 30px; border: 1px solid var(--line); border-radius: 14px; background: linear-gradient(145deg, rgba(16, 40, 46, .82), rgba(7, 20, 24, .9)); box-shadow: 0 18px 50px rgba(0, 0, 0, .14); transition: transform .3s, border-color .3s, box-shadow .3s; }
.benefit-card::before { position: absolute; inset: 0 0 auto; height: 2px; background: linear-gradient(90deg, transparent, var(--cyan), transparent); content: ""; opacity: 0; transition: opacity .3s; }
.benefit-card:hover { border-color: rgba(120, 197, 194, .42); box-shadow: 0 24px 64px rgba(0, 0, 0, .3); transform: translateY(-5px); }
.benefit-card:hover::before { opacity: 1; }
.benefit-featured { border-color: var(--line-gold); background: linear-gradient(145deg, rgba(47, 49, 37, .7), rgba(8, 24, 28, .94)); }
.card-index { position: absolute; top: 22px; right: 25px; color: transparent; font-size: 3.8rem; font-weight: 900; line-height: 1; -webkit-text-stroke: 1px rgba(216, 179, 106, .2); }
.benefit-icon { display: grid; width: 52px; height: 52px; place-items: center; margin-bottom: 26px; border: 1px solid var(--line-gold); border-radius: 50%; color: var(--gold-light); background: rgba(216, 179, 106, .08); }
.benefit-icon svg { width: 26px; height: 26px; }
.card-kicker { margin-bottom: 3px; color: var(--cyan); font-size: .65rem; font-weight: 700; letter-spacing: .25em; }
.benefit-card h3 { margin-bottom: 12px; font-family: "STKaiti", "KaiTi", serif; font-size: 1.55rem; }
.benefit-card h3 em { color: var(--gold-light); font-size: 1.35em; font-style: normal; }
.benefit-card > p:not(.card-kicker) { color: var(--muted); font-size: .89rem; }
.card-tag { display: inline-block; margin-top: 22px; padding: 5px 11px; border: 1px solid var(--line); border-radius: 99px; color: var(--ink-soft); font-size: .7rem; letter-spacing: .1em; }
.benefit-note { margin-top: 20px; color: var(--muted); font-size: .78rem; text-align: center; }

/* 玩法卡 */
.features { overflow: hidden; padding-bottom: 94px; background: linear-gradient(180deg, transparent, rgba(11, 34, 39, .55), transparent); }
.feature-track { display: flex; width: min(1520px, calc(100% - 48px)); gap: 18px; margin: 0 auto; overflow-x: auto; padding: 10px 0 24px; scroll-behavior: smooth; scroll-snap-type: x mandatory; scrollbar-color: rgba(120, 197, 194, .3) transparent; scrollbar-width: thin; }
.feature-card { position: relative; width: clamp(220px, 18vw, 284px); aspect-ratio: 9 / 14; flex: 0 0 auto; overflow: hidden; border: 1px solid var(--line); border-radius: 13px; background: var(--panel-solid); box-shadow: 0 20px 45px rgba(0, 0, 0, .24); scroll-snap-align: center; transition: border-color .3s, transform .3s; }
.feature-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .65s ease, filter .4s; }
.feature-card::after { position: absolute; inset: 32% 0 0; background: linear-gradient(transparent, rgba(3, 10, 12, .97)); content: ""; }
.feature-card:hover { border-color: rgba(216, 179, 106, .55); transform: translateY(-6px); }
.feature-card:hover img { filter: saturate(1.08); transform: scale(1.045); }
.feature-overlay { position: absolute; z-index: 2; right: 0; bottom: 0; left: 0; padding: 24px; }
.feature-overlay span { color: var(--gold); font-size: .65rem; letter-spacing: .22em; }
.feature-overlay h3 { margin-top: 4px; font-family: "STKaiti", "KaiTi", serif; font-size: 1.55rem; letter-spacing: .1em; }
.feature-overlay p { color: var(--ink-soft); font-size: .77rem; }
.track-hint { display: flex; align-items: center; justify-content: center; gap: 10px; margin-top: 18px; color: var(--muted); font-size: .67rem; letter-spacing: .12em; }
.track-hint span { width: 38px; height: 1px; background: linear-gradient(90deg, transparent, var(--cyan)); }

/* 剧情 */
.story-section { overflow: hidden; }
.story-section::before { position: absolute; top: 10%; right: -14%; width: 700px; height: 700px; border: 1px solid rgba(120, 197, 194, .08); border-radius: 50%; content: ""; box-shadow: inset 0 0 80px rgba(120, 197, 194, .03); }
.story-grid { display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: clamp(50px, 7vw, 100px); }
.story-media { position: relative; padding: 14px; border: 1px solid var(--line); }
.story-media::before { position: absolute; inset: -1px; border: 1px solid transparent; background: linear-gradient(135deg, var(--gold), transparent 25%, transparent 75%, var(--cyan)) border-box; content: ""; mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0); mask-composite: exclude; pointer-events: none; }
.story-media img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
.story-seal { position: absolute; top: -22px; right: -22px; display: grid; width: 76px; height: 76px; place-items: center; border: 1px solid rgba(255, 255, 255, .28); color: #fff0de; background: var(--red); font-family: "STKaiti", "KaiTi", serif; font-size: 1.1rem; line-height: 1.05; text-align: center; transform: rotate(7deg); }
.story-caption { position: absolute; right: 14px; bottom: 14px; left: 14px; padding: 30px 28px 22px; background: linear-gradient(transparent, rgba(4, 11, 14, .94)); }
.story-caption span, .story-caption strong { display: block; }
.story-caption span { color: var(--cyan); font-size: .67rem; letter-spacing: .22em; }
.story-caption strong { margin-top: 3px; font-family: "STKaiti", "KaiTi", serif; font-size: 1.45rem; letter-spacing: .12em; }
.story-copy > p:not(.eyebrow) { margin: 22px 0 28px; color: var(--muted); }
.chapter-list { display: grid; gap: 5px; }
.chapter-list article { display: flex; align-items: center; gap: 17px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.chapter-list article > span { display: grid; width: 38px; height: 38px; flex: 0 0 auto; place-items: center; border: 1px solid var(--line-gold); color: var(--gold-light); font-family: "STKaiti", "KaiTi", serif; transform: rotate(45deg); }
.chapter-list article > span::first-line { transform: rotate(-45deg); }
.chapter-list strong { font-size: .95rem; letter-spacing: .08em; }
.chapter-list p { color: var(--muted); font-size: .76rem; }
.text-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 26px; color: var(--gold-light); font-size: .86rem; font-weight: 700; letter-spacing: .1em; }
.text-link svg { width: 17px; height: 17px; transition: transform .2s; }
.text-link:hover svg { transform: translateX(4px); }

/* 游戏攻略 */
.guide-section { overflow: hidden; background: linear-gradient(180deg, rgba(5, 15, 18, .12), rgba(31, 54, 49, .32), rgba(5, 15, 18, .12)); }
.guide-section::before { position: absolute; top: 80px; left: -180px; width: 520px; height: 520px; border: 1px solid rgba(216, 179, 106, .08); border-radius: 50%; content: ""; box-shadow: 0 0 100px rgba(120, 197, 194, .05); }
.guide-spotlight { display: grid; grid-template-columns: 1.08fr .92fr; overflow: hidden; margin-bottom: 22px; border: 1px solid var(--line-gold); border-radius: 16px; background: linear-gradient(135deg, rgba(43, 57, 48, .85), rgba(7, 24, 28, .96)); box-shadow: 0 26px 70px rgba(0, 0, 0, .26); }
.guide-spotlight-main { padding: clamp(30px, 5vw, 56px); border-right: 1px solid var(--line); }
.guide-spotlight h3 { margin: 8px 0 18px; font-family: "STXingkai", "华文行楷", "KaiTi", serif; font-size: clamp(2rem, 4vw, 3.3rem); font-weight: 400; letter-spacing: .1em; line-height: 1.14; }
.guide-spotlight h3 em { color: var(--gold-light); font-style: normal; }
.guide-spotlight-main > p:not(.card-kicker) { max-width: 590px; color: var(--ink-soft); font-size: .9rem; }
.guide-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 28px; }
.guide-stats span { padding: 13px 10px; border: 1px solid var(--line); border-radius: 8px; background: rgba(3, 14, 17, .32); }
.guide-stats strong, .guide-stats small { display: block; }
.guide-stats strong { color: var(--gold-light); font-size: 1.08rem; font-variant-numeric: tabular-nums; }
.guide-stats small { color: var(--muted); font-size: .63rem; }
.guide-bosses { display: grid; grid-template-columns: repeat(2, 1fr); }
.guide-bosses article { display: flex; min-height: 150px; align-items: center; gap: 14px; padding: 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.guide-bosses article:nth-child(2n) { border-right: 0; }
.guide-bosses article:nth-last-child(-n+2) { border-bottom: 0; }
.guide-bosses article > span { color: transparent; font-size: 2.2rem; font-weight: 900; line-height: 1; -webkit-text-stroke: 1px rgba(120, 197, 194, .28); }
.guide-bosses strong { font-family: "STKaiti", "KaiTi", serif; font-size: 1.05rem; }
.guide-bosses p { margin-top: 4px; color: var(--muted); font-size: .72rem; }
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.guide-card { overflow: hidden; border: 1px solid var(--line); border-radius: 12px; background: rgba(9, 29, 34, .72); transition: border-color .25s, background .25s, transform .25s; }
.guide-card:hover { border-color: rgba(120, 197, 194, .4); transform: translateY(-3px); }
.guide-card[open] { border-color: var(--line-gold); background: rgba(16, 39, 42, .92); }
.guide-card summary { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 15px; min-height: 116px; padding: 22px; cursor: pointer; list-style: none; }
.guide-card summary::-webkit-details-marker { display: none; }
.guide-no { display: grid; width: 44px; height: 44px; place-items: center; border: 1px solid var(--line-gold); border-radius: 50%; color: var(--gold-light); font-size: .72rem; font-weight: 800; }
.guide-card summary small { color: var(--cyan); font-size: .56rem; font-weight: 700; letter-spacing: .2em; }
.guide-card summary h3 { margin: 2px 0; font-family: "STKaiti", "KaiTi", serif; font-size: 1.12rem; letter-spacing: .06em; }
.guide-card summary p { color: var(--muted); font-size: .69rem; }
.guide-card summary i { position: relative; width: 18px; height: 18px; }
.guide-card summary i::before, .guide-card summary i::after { position: absolute; top: 50%; left: 50%; width: 13px; height: 1px; background: var(--gold); content: ""; transform: translate(-50%, -50%); transition: transform .25s; }
.guide-card summary i::after { transform: translate(-50%, -50%) rotate(90deg); }
.guide-card[open] summary i::after { transform: translate(-50%, -50%) rotate(0deg); }
.guide-card-body { padding: 0 22px 22px 81px; border-top: 1px solid var(--line); color: var(--muted); font-size: .78rem; }
.guide-card-body p { padding-top: 12px; }
.guide-card-body strong { color: var(--ink-soft); }
.guide-disclaimer { margin-top: 14px; color: #718384; font-size: .68rem; text-align: center; }
@media (max-width: 900px) {
  .guide-spotlight { grid-template-columns: 1fr; }
  .guide-spotlight-main { border-right: 0; border-bottom: 1px solid var(--line); }
  .guide-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .guide-bosses { grid-template-columns: 1fr; }
  .guide-bosses article, .guide-bosses article:nth-child(2n), .guide-bosses article:nth-last-child(-n+2) { min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .guide-bosses article:last-child { border-bottom: 0; }
  .guide-grid { grid-template-columns: 1fr; }
  .guide-card summary { min-height: 105px; padding: 18px; }
  .guide-card-body { padding: 0 18px 18px; }
  .guide-stats strong { font-size: .92rem; }
}

.faq-section::before { display: none; }
.faq-grid { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 900px) { .faq-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .faq-grid { grid-template-columns: 1fr; } }

/* 实机画面 */
.gallery { background: linear-gradient(180deg, rgba(5, 15, 18, .25), rgba(10, 31, 36, .8), rgba(5, 15, 18, .3)); }
.gallery-stage { position: relative; width: min(980px, 100%); aspect-ratio: 16 / 8.5; overflow: hidden; margin: 0 auto; border: 1px solid var(--line-gold); border-radius: 15px; background: #020709; box-shadow: 0 34px 80px rgba(0, 0, 0, .44); cursor: zoom-in; }
.stage-images { position: absolute; inset: 0; }
.stage-images img { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; object-fit: contain; transform: scale(1.015); transition: opacity .55s, transform .7s; }
.stage-images img.is-active { opacity: 1; transform: scale(1); }
.stage-arrow { position: absolute; z-index: 3; top: 50%; display: grid; width: 44px; height: 44px; place-items: center; border: 1px solid rgba(255, 255, 255, .2); border-radius: 50%; background: rgba(4, 13, 15, .62); backdrop-filter: blur(9px); transform: translateY(-50%); transition: background .2s, border-color .2s; }
.stage-arrow:hover { border-color: var(--gold); background: rgba(80, 60, 29, .72); }
.stage-arrow svg { width: 22px; height: 22px; }
.stage-prev { left: 20px; }
.stage-next { right: 20px; }
.stage-counter { position: absolute; z-index: 2; right: 22px; bottom: 18px; font-variant-numeric: tabular-nums; }
.stage-counter strong { color: var(--gold-light); font-size: 1.25rem; }
.stage-counter span { color: var(--muted); font-size: .72rem; }
.stage-caption { position: absolute; z-index: 2; bottom: 18px; left: 22px; pointer-events: none; }
.stage-caption span, .stage-caption strong { display: block; }
.stage-caption span { color: var(--cyan); font-size: .58rem; letter-spacing: .24em; }
.stage-caption strong { font-family: "STKaiti", "KaiTi", serif; font-size: 1.2rem; letter-spacing: .1em; }
.gallery-thumbs { display: grid; grid-template-columns: repeat(5, 1fr); width: min(760px, 100%); gap: 9px; margin: 17px auto 0; }
.gallery-thumbs button { overflow: hidden; aspect-ratio: 16 / 10; border: 1px solid transparent; border-radius: 6px; opacity: .48; background: #020709; transition: opacity .2s, border-color .2s; }
.gallery-thumbs button:hover, .gallery-thumbs button.is-active { border-color: var(--gold); opacity: 1; }
.gallery-thumbs img { width: 100%; height: 100%; object-fit: cover; }

/* 视频 */
.video-section { overflow: hidden; background: var(--bg-deep); }
.video-section::before { position: absolute; inset: 0; background: radial-gradient(circle at 15% 50%, rgba(58, 133, 134, .16), transparent 36%), linear-gradient(100deg, transparent 0 48%, rgba(255, 255, 255, .018) 48% 49%, transparent 49%); content: ""; }
.video-grid { display: grid; grid-template-columns: .68fr 1.32fr; align-items: center; gap: 70px; }
.video-copy > p:not(.eyebrow) { margin-top: 20px; color: var(--muted); }
.video-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; margin-top: 26px; color: var(--ink-soft); font-size: .7rem; letter-spacing: .12em; }
.video-meta i { width: 3px; height: 3px; border-radius: 50%; background: var(--gold); }
.video-frame { position: relative; padding: 8px; border: 1px solid var(--line); background: rgba(255, 255, 255, .018); box-shadow: var(--shadow); }
.video-frame video { display: block; width: 100%; aspect-ratio: 16 / 9; background: #000; object-fit: cover; }
.corner { position: absolute; width: 42px; height: 42px; pointer-events: none; }
.corner-tl { top: -7px; left: -7px; border-top: 2px solid var(--gold); border-left: 2px solid var(--gold); }
.corner-br { right: -7px; bottom: -7px; border-right: 2px solid var(--cyan); border-bottom: 2px solid var(--cyan); }

/* 下载 */
.download { position: relative; display: grid; min-height: 720px; place-items: center; overflow: hidden; padding: 110px 0; text-align: center; background: #041014; }
.download-bg { position: absolute; inset: 0; opacity: .24; background: linear-gradient(0deg, #041014 2%, transparent 42%, #041014 100%), linear-gradient(90deg, #041014, transparent 35%, transparent 65%, #041014), url("images/image/fivepicf3ccdd27d2000e3f9255a7e3e2c488001792574412.jpg") center 22% / cover no-repeat; filter: saturate(.75); }
.download-inner::before { position: absolute; top: 50%; left: 50%; width: min(760px, 90vw); height: min(430px, 70vw); border: 1px solid rgba(216, 179, 106, .12); border-radius: 50%; content: ""; pointer-events: none; transform: translate(-50%, -50%); }
.download-logo { width: 112px; margin: 0 auto 18px; filter: drop-shadow(0 14px 24px rgba(0, 0, 0, .48)); }
.download h2 { margin-top: 14px; }
.download-date { color: var(--ink-soft); font-size: clamp(1.25rem, 3vw, 1.8rem); font-variant-numeric: tabular-nums; font-weight: 300; letter-spacing: .15em; }
.download-date span { color: var(--gold-light); font-weight: 800; }
.download-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin: 24px 0 30px; }
.download-tags span { padding: 6px 13px; border: 1px solid var(--line); border-radius: 99px; color: var(--ink-soft); background: rgba(3, 12, 15, .42); font-size: .7rem; letter-spacing: .1em; backdrop-filter: blur(7px); }
.download-channels { display: flex; align-items: stretch; justify-content: center; gap: 14px; }
.download-qr-card { width: 190px; padding: 13px; border: 1px solid rgba(255, 255, 255, .25); border-radius: 9px; color: #142326; background: #f5f2e9; box-shadow: 0 16px 40px rgba(0, 0, 0, .24); }
.download-qr { width: 146px; height: 146px; margin: 0 auto; }
.download-qr-card strong, .download-qr-card span { display: block; }
.download-qr-card strong { margin-top: 8px; font-size: .9rem; letter-spacing: .1em; }
.download-qr-card span { color: #617073; font-size: .62rem; }
.download-actions { display: grid; align-content: center; gap: 10px; }
.store-button { display: flex; min-width: 210px; align-items: center; justify-content: flex-start; gap: 13px; padding: 11px 20px; border: 1px solid rgba(255, 255, 255, .25); border-radius: 9px; color: #fff; background: rgba(3, 11, 14, .72); text-align: left; transition: border-color .25s, background .25s, transform .25s; }
.store-button:hover { border-color: var(--gold); background: rgba(74, 56, 28, .65); transform: translateY(-2px); }
.store-button svg { width: 28px; height: 28px; flex: 0 0 auto; }
.store-button span { font-size: 1rem; font-weight: 800; line-height: 1.2; }
.store-button small { display: block; color: var(--muted); font-size: .61rem; font-weight: 400; letter-spacing: .06em; }
.download-tip { margin-top: 16px; color: var(--muted); font-size: .72rem; }

/* 页脚与浮层 */
footer { padding: 44px 0 28px; border-top: 1px solid var(--line); background: #030a0d; }
.footer-main { display: flex; align-items: center; justify-content: space-between; padding-bottom: 28px; }
.footer-main nav { display: flex; flex-wrap: wrap; gap: 24px; color: var(--muted); font-size: .78rem; }
.footer-main nav a:hover { color: var(--gold-light); }
.footer-bottom { padding-top: 22px; border-top: 1px solid rgba(255, 255, 255, .06); color: #667778; font-size: .68rem; text-align: center; }
.footer-bottom p + p { margin-top: 5px; }
.lightbox { position: fixed; inset: 0; z-index: 300; display: grid; visibility: hidden; place-items: center; padding: 54px; opacity: 0; background: rgba(1, 5, 7, .94); backdrop-filter: blur(14px); transition: opacity .25s, visibility .25s; }
.lightbox.show { visibility: visible; opacity: 1; }
.lightbox img { max-width: min(1180px, 94vw); max-height: 86vh; object-fit: contain; box-shadow: 0 28px 80px #000; }
.lightbox button { position: absolute; top: 22px; right: 22px; display: grid; width: 44px; height: 44px; place-items: center; border: 1px solid rgba(255, 255, 255, .18); border-radius: 50%; background: rgba(255, 255, 255, .06); }
.lightbox button:hover { border-color: var(--gold); }
.lightbox button svg, .to-top svg { width: 21px; height: 21px; }
.toast { position: fixed; z-index: 400; bottom: 28px; left: 50%; visibility: hidden; padding: 12px 20px; border: 1px solid var(--line-gold); border-radius: 8px; opacity: 0; color: var(--ink); background: rgba(8, 25, 29, .94); box-shadow: 0 18px 48px rgba(0, 0, 0, .38); font-size: .84rem; transform: translate(-50%, 15px); transition: opacity .25s, transform .25s, visibility .25s; }
.toast.show { visibility: visible; opacity: 1; transform: translate(-50%, 0); }
.to-top { position: fixed; z-index: 90; right: 22px; bottom: 22px; display: grid; visibility: hidden; width: 43px; height: 43px; place-items: center; border: 1px solid var(--line); border-radius: 50%; opacity: 0; background: rgba(8, 27, 31, .86); backdrop-filter: blur(9px); transition: opacity .25s, visibility .25s, border-color .25s; }
.to-top.show { visibility: visible; opacity: 1; }
.to-top:hover { border-color: var(--gold); }

/* 动画 */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.delay-1 { transition-delay: .1s; }
.delay-2 { transition-delay: .2s; }

@media (max-width: 1100px) {
  .nav-links a { padding-inline: 8px; font-size: .82rem; }
  .nav-cta { display: none; }
  .hero { min-height: 820px; }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .honor-grid article:nth-child(2) { border-right: 0; }
  .honor-grid article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .story-grid { gap: 54px; }
  .video-grid { gap: 44px; }
}

@media (max-width: 820px) {
  .container, .nav-inner { width: min(calc(100% - 32px), 680px); }
  .section { padding: 84px 0; }
  .navbar { background: rgba(4, 11, 14, .72); backdrop-filter: blur(12px); }
  .nav-toggle { display: flex; }
  .nav-links { position: fixed; top: 72px; right: 16px; left: 16px; display: grid; visibility: hidden; gap: 2px; padding: 14px; border: 1px solid var(--line); border-radius: 12px; opacity: 0; background: rgba(6, 20, 24, .97); box-shadow: var(--shadow); transform: translateY(-8px); transition: opacity .22s, transform .22s, visibility .22s; }
  .nav-links.open { visibility: visible; opacity: 1; transform: none; }
  .nav-links a { padding: 12px 14px; border-radius: 6px; font-size: .9rem; }
  .nav-links a:hover, .nav-links a.is-active { background: rgba(120, 197, 194, .08); }
  .nav-links a::after { display: none; }
  .hero { min-height: 820px; height: auto; padding: 130px 0 100px; }
  .hero-slide { background-position: 62% center; }
  .hero-slide-square { background-position: center; }
  .hero-shade { background: linear-gradient(90deg, rgba(4, 11, 14, .95), rgba(4, 11, 14, .55)), linear-gradient(0deg, #071318 0, transparent 45%, rgba(4, 11, 14, .65) 100%); }
  .hero-copy { max-width: 500px; }
  .hero-controls { right: 18px; }
  .section-heading-row { display: block; }
  .section-heading-row > p { padding-bottom: 0; }
  .benefit-grid { grid-template-columns: 1fr; max-width: 620px; margin-inline: auto; }
  .benefit-card { min-height: 0; }
  .story-grid, .video-grid { grid-template-columns: 1fr; }
  .story-media { max-width: 620px; margin-inline: auto; }
  .story-copy { max-width: 620px; }
  .video-grid { gap: 44px; }
  .video-copy { max-width: 620px; }
  .gallery-stage { aspect-ratio: 4 / 3; }
  .footer-main { align-items: flex-start; gap: 28px; }
}

@media (max-width: 560px) {
  .container, .nav-inner { width: calc(100% - 28px); }
  .section { padding: 72px 0; }
  .brand > span { font-size: 1.02rem; }
  .brand small { font-size: .5rem; }
  .brand img { width: 40px; height: 40px; }
  .hero { min-height: 780px; padding-top: 118px; }
  .hero-slide { background-position: 66% center; }
  .hero-slide-square { background-position: center; }
  .hero-shade { background: linear-gradient(90deg, rgba(4, 11, 14, .94), rgba(4, 11, 14, .48)), linear-gradient(0deg, #071318 0, rgba(4, 11, 14, .12) 50%, rgba(4, 11, 14, .72) 100%); }
  .hero-content h1 { font-size: clamp(2.75rem, 16vw, 4.2rem); letter-spacing: .03em; }
  .hero-content h1 em { font-size: .6em; }
  .hero-lead { font-size: .83rem; letter-spacing: .2em; }
  .hero-copy { display: none; }
  .hero-meta { display: grid; gap: 8px; margin-top: 18px; }
  .hero-actions { margin-top: 25px; }
  .hero-actions > .button, .hero-download { flex: 1 1 150px; }
  .hero-download .button { width: 100%; padding-inline: 16px; }
  .countdown-card { margin-top: 28px; }
  .countdown { gap: 6px; }
  .countdown strong { font-size: 1.42rem; }
  .countdown-head small { display: none; }
  .hero-controls, .scroll-guide { display: none; }
  .honor-grid { grid-template-columns: 1fr; width: calc(100% - 28px); }
  .honor-grid article { padding: 20px 18px; border-right: 0; border-bottom: 1px solid var(--line); }
  .honor-grid article:nth-child(3) { border-bottom: 1px solid var(--line); }
  .honor-grid article:last-child { border-bottom: 0; }
  .section-heading { margin-bottom: 38px; }
  .section-heading h2, .story-copy h2, .video-copy h2, .download h2 { font-size: 2.2rem; }
  .section-heading-row > p { font-size: .88rem; }
  .benefit-card { padding: 28px 23px; }
  .feature-track { width: calc(100% - 28px); gap: 13px; }
  .feature-card { width: min(76vw, 280px); }
  .story-seal { top: -12px; right: -8px; width: 62px; height: 62px; font-size: .94rem; }
  .story-caption { padding: 30px 16px 14px; }
  .chapter-list article > span { width: 34px; height: 34px; }
  .gallery-stage { aspect-ratio: 3 / 4; }
  .stage-images img { object-fit: contain; }
  .stage-arrow { width: 39px; height: 39px; }
  .stage-prev { left: 10px; }
  .stage-next { right: 10px; }
  .stage-caption { bottom: 13px; left: 14px; }
  .stage-counter { right: 14px; bottom: 13px; }
  .gallery-thumbs { grid-template-columns: repeat(5, 1fr); gap: 5px; }
  .video-frame { padding: 4px; }
  .download { min-height: 700px; padding: 80px 0; }
  .download-logo { width: 92px; }
  .download-date { font-size: 1.05rem; letter-spacing: .08em; }
  .download-channels { flex-direction: column; align-items: center; }
  .download-actions { display: grid; }
  .store-button { min-width: 230px; }
  .footer-main { display: grid; }
  .footer-main nav { gap: 13px 18px; }
  .lightbox { padding: 52px 14px 20px; }
  .toast { width: calc(100% - 40px); text-align: center; }
  .to-top { right: 14px; bottom: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}