:root {
  --ink: #0d1715;
  --ink-2: #142522;
  --paper: #f5f0e6;
  --paper-2: #ece4d5;
  --jade: #7ec7aa;
  --jade-2: #bce7d5;
  --gold: #d8b16a;
  --gold-2: #f0d59c;
  --red: #e85435;
  --red-2: #ff6a44;
  --white: #fffaf0;
  --muted: #aab7b1;
  --shadow: 0 24px 70px rgba(0, 0, 0, .22);
  --serif: "STSong", "Songti SC", "Noto Serif SC", "Source Han Serif SC", serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); overflow-x: hidden; }
body.modal-open { overflow: hidden; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
svg { display: block; width: 1em; height: 1em; }

::selection { background: rgba(232,84,53,.2); }

.page-noise {
  position: fixed; inset: 0; z-index: 999; pointer-events: none; opacity: .06; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180' viewBox='0 0 180 180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.36'/%3E%3C/svg%3E");
}
.progress { position: fixed; left: 0; top: 0; z-index: 1200; height: 2px; width: 0; background: linear-gradient(90deg,var(--gold),var(--red-2)); box-shadow: 0 0 18px rgba(232,84,53,.45); }

.mobile-head { display: none; }

.side-rail {
  position: fixed; inset: 0 auto 0 0; z-index: 100; width: 154px; padding: 26px 18px 22px;
  color: #f5efe4; background: linear-gradient(90deg, rgba(6,17,15,.88), rgba(8,21,18,.68) 72%, rgba(8,21,18,0));
  backdrop-filter: blur(5px); display: flex; flex-direction: column; align-items: flex-start;
}
.rail-brand { position: relative; display: inline-flex; flex-direction: column; align-items: center; margin-left: 2px; line-height: 1; }
.rail-brand-cn { font-family: var(--serif); font-size: 18px; font-weight: 900; letter-spacing: -1px; color: #f6d48e; text-shadow: 0 2px 0 #692d1d; }
.rail-brand-next { margin-top: 4px; font-size: 9px; letter-spacing: .3em; color: #fff4d7; }
.rail-brand i { position: absolute; right: -31px; top: 25px; width: 45px; height: 22px; display: grid; place-items: center; color: white; background: var(--red); font: 700 11px var(--serif); font-style: normal; transform: rotate(-2deg); box-shadow: 0 4px 14px rgba(0,0,0,.25); clip-path: polygon(0 0,100% 8%,93% 100%,5% 91%); }

.rail-nav { position: absolute; left: 16px; top: 33%; display: grid; gap: 17px; width: 130px; }
.rail-link { position: relative; display: grid; grid-template-columns: 28px 1fr; grid-template-rows: auto auto; column-gap: 9px; align-items: center; opacity: .46; transition: .35s ease; }
.rail-link:hover, .rail-link.active { opacity: 1; transform: translateX(4px); }
.rail-link::after { content: ""; position: absolute; left: 7px; top: 33px; width: 1px; height: 18px; background: linear-gradient(var(--gold), transparent); opacity: .38; }
.rail-link:last-child::after { display: none; }
.rail-dot { grid-row: 1/3; width: 27px; height: 27px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; font: 700 10px var(--serif); color: var(--gold-2); background: rgba(255,255,255,.05); transition: .35s ease; }
.rail-link.active .rail-dot { border-color: rgba(240,213,156,.75); background: rgba(216,177,106,.15); box-shadow: 0 0 0 5px rgba(216,177,106,.06); }
.rail-link em { font-style: normal; font-family: var(--serif); font-size: 15px; font-weight: 800; letter-spacing: .08em; }
.rail-link small { font-size: 8px; color: var(--gold-2); letter-spacing: .23em; margin-top: 3px; }
.rail-bottom { margin-top: auto; writing-mode: vertical-rl; display: flex; align-items: center; gap: 10px; font-size: 10px; opacity: .58; letter-spacing: .2em; }
.rail-bottom i { display: block; width: 1px; height: 25px; background: rgba(255,255,255,.4); }

.hero { position: relative; min-height: 100svh; overflow: hidden; background: #0c1b18; color: white; isolation: isolate; }
.hero-world { position: absolute; inset: -3%; z-index: -5; background: url('assets/hero-world.webp') center/cover no-repeat; transform: scale(1.04); filter: saturate(.92) brightness(.96); }
.hero-vignette { position: absolute; inset: 0; z-index: -3; background:
  radial-gradient(circle at 52% 46%, rgba(255,255,255,.08) 0, transparent 34%),
  linear-gradient(90deg, rgba(3,13,12,.72) 0 8%, rgba(2,12,11,.16) 32%, rgba(2,12,11,.05) 68%, rgba(3,12,11,.25) 100%),
  linear-gradient(0deg, rgba(4,13,12,.58) 0, transparent 25%, rgba(3,10,10,.15) 100%); }
.hero::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 190px; z-index: 3; pointer-events: none; background: linear-gradient(0deg, #f3ecdf 0, rgba(243,236,223,.65) 28%, transparent 100%); opacity: .18; }
.hero-cloud { position: absolute; z-index: -2; width: 680px; height: 260px; border-radius: 50%; filter: blur(30px); opacity: .16; background: rgba(255,255,255,.72); animation: cloudDrift 20s ease-in-out infinite alternate; }
.cloud-a { left: 10%; top: 18%; }
.cloud-b { right: 3%; bottom: 5%; animation-delay: -8s; }
@keyframes cloudDrift { to { transform: translate3d(110px, 16px, 0) scale(1.1); } }

.hero-character-wrap { position: absolute; z-index: -1; right: 6.5%; bottom: 0; width: min(44vw, 760px); aspect-ratio: 1.08; overflow: hidden; opacity: .95; filter: drop-shadow(0 25px 35px rgba(0,0,0,.35)); border-radius: 46% 54% 0 0 / 18% 22% 0 0; mix-blend-mode: normal; }
.hero-character { width: 100%; height: 100%; object-fit: cover; object-position: center top; transform: scale(1.07); mask-image: linear-gradient(to bottom,#000 0 80%,transparent 100%), linear-gradient(to right,transparent 0,#000 18% 100%); mask-composite: intersect; }
.hero-character-glow { position: absolute; z-index: -1; inset: 16% 8% 7% 18%; border-radius: 50%; background: radial-gradient(circle, rgba(242,204,130,.42), transparent 66%); filter: blur(24px); }

.hero-center { position: absolute; z-index: 5; left: 50%; top: 11.5%; transform: translateX(-50%); width: min(820px, 64vw); text-align: center; text-shadow: 0 3px 20px rgba(0,0,0,.26); }
.hero-kicker { display: flex; align-items: center; justify-content: center; gap: 12px; color: #f8ddaf; font: 700 12px var(--serif); letter-spacing: .38em; }
.hero-kicker span { display: block; width: 34px; height: 1px; background: linear-gradient(90deg,transparent,var(--red)); }
.hero-kicker span:last-child { transform: scaleX(-1); }
.hero-title { margin: 8px 0 -2px; position: relative; display: inline-flex; align-items: flex-end; justify-content: center; font-family: var(--serif); font-weight: 900; line-height: .9; letter-spacing: -.09em; filter: drop-shadow(0 14px 14px rgba(0,0,0,.32)); }
.hero-title .title-small, .hero-title strong { font-size: clamp(70px, 8.7vw, 150px); color: #f8e9ca; -webkit-text-stroke: 2px #662c1f; paint-order: stroke fill; text-shadow: 4px 4px 0 #c6482e, 8px 8px 0 rgba(69,25,20,.45); }
.hero-title strong { color: #fff0cd; }
.hero-title b { position: absolute; right: 7%; bottom: -22px; transform: rotate(-5deg); font: 900 24px/1 var(--sans); letter-spacing: .08em; color: #fff0ca; -webkit-text-stroke: 0; text-shadow: 2px 2px 0 #7c321f; }
.hero-subtitle { margin: 9px auto 0; display: flex; justify-content: center; align-items: center; gap: 12px; font: 900 28px var(--serif); letter-spacing: .25em; color: #fff5e1; }
.hero-subtitle i { width: 26px; height: 1px; background: rgba(255,255,255,.45); transform: rotate(-8deg); }
.hero-line { position: absolute; left: calc(100% + 24px); top: 58%; white-space: nowrap; margin: 0; padding: 7px 18px; border-top: 1px solid rgba(255,255,255,.24); border-bottom: 1px solid rgba(255,255,255,.24); font-family: var(--serif); font-weight: 700; letter-spacing: .22em; color: rgba(255,255,255,.9); }

.hero-socials { position: absolute; z-index: 8; right: 24px; top: 23px; display: flex; gap: 10px; }
.circle-action, .round-btn, .round-arrow { border: 1px solid rgba(255,255,255,.28); border-radius: 50%; background: rgba(8,21,18,.46); color: white; display: grid; place-items: center; cursor: pointer; transition: .28s ease; backdrop-filter: blur(10px); }
.circle-action { width: 42px; height: 42px; }
.circle-action svg { width: 18px; height: 18px; fill: currentColor; }
.circle-action:hover { transform: translateY(-3px) scale(1.05); border-color: var(--gold-2); background: rgba(216,177,106,.16); box-shadow: 0 8px 24px rgba(0,0,0,.22); }
.sound-off { display: none; }
.sound-muted .sound-on { display: none; }
.sound-muted .sound-off { display: block; }
.tooltip { position: relative; }
.tooltip::after { content: attr(data-tip); position: absolute; right: 0; top: calc(100% + 9px); opacity: 0; pointer-events: none; transform: translateY(-4px); transition: .2s; background: rgba(8,17,16,.88); border: 1px solid rgba(255,255,255,.12); border-radius: 20px; padding: 6px 9px; white-space: nowrap; font-size: 11px; }
.tooltip:hover::after { opacity: 1; transform: translateY(0); }

.platform-quick { position: absolute; z-index: 8; left: 8.3%; bottom: 26px; display: flex; gap: 9px; }
.platform-pill { min-width: 170px; height: 62px; padding: 0 17px 0 10px; display: flex; align-items: center; gap: 11px; border: 1px solid rgba(176,228,205,.22); border-radius: 13px 30px 30px 13px; background: linear-gradient(100deg,rgba(6,20,19,.9),rgba(9,31,28,.78)); color: white; cursor: pointer; box-shadow: 0 14px 28px rgba(0,0,0,.22); transition: .3s ease; }
.platform-pill:hover { transform: translateY(-4px); border-color: rgba(176,228,205,.55); box-shadow: 0 18px 34px rgba(0,0,0,.28), 0 0 0 4px rgba(126,199,170,.08); }
.platform-icon { width: 38px; height: 38px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 50%; color: var(--jade-2); background: rgba(126,199,170,.12); border: 1px solid rgba(126,199,170,.22); }
.platform-icon svg { width: 18px; height: 18px; fill: currentColor; }
.platform-pill span:last-child { display: grid; text-align: left; gap: 2px; }
.platform-pill small { opacity: .58; font-size: 9px; }
.platform-pill b { font-size: 13px; font-weight: 700; letter-spacing: .04em; }

.main-cta { position: absolute; z-index: 10; left: 50%; bottom: 18px; transform: translateX(-50%); width: 236px; height: 78px; display: flex; align-items: center; justify-content: center; gap: 18px; border: 0; border-radius: 999px; background: linear-gradient(180deg,var(--red-2),#e6482c); color: white; cursor: pointer; box-shadow: 0 14px 35px rgba(79,25,18,.42), inset 0 0 0 2px rgba(255,255,255,.38), inset 0 -7px 14px rgba(126,36,20,.18); transition: .28s ease; }
.main-cta::before { content: ""; position: absolute; inset: -6px; border: 2px solid #f4d994; border-radius: inherit; box-shadow: 0 0 0 2px rgba(73,34,18,.55); }
.main-cta:hover { transform: translateX(-50%) translateY(-5px) scale(1.02); box-shadow: 0 20px 45px rgba(79,25,18,.46), 0 0 40px rgba(232,84,53,.2), inset 0 0 0 2px rgba(255,255,255,.45); }
.cta-orbit { position: absolute; inset: -14px; border: 1px solid rgba(248,224,166,.24); border-radius: inherit; animation: breathe 2.4s ease-in-out infinite; }
@keyframes breathe { 50% { transform: scale(1.04); opacity: .25; } }
.cta-copy { display: grid; gap: 2px; text-align: center; }
.cta-copy small { font-size: 10px; letter-spacing: .2em; opacity: .76; }
.cta-copy b { font: 900 23px var(--serif); letter-spacing: .08em; }
.cta-arrow { font-size: 22px; transition: .25s; }
.main-cta:hover .cta-arrow { transform: translateX(5px); }

.player-counter { position: absolute; z-index: 7; right: 22px; bottom: 26px; text-align: right; color: #fff8d0; text-shadow: 0 2px 12px rgba(0,0,0,.4); }
.player-counter small { display: block; color: rgba(255,255,255,.76); font-size: 10px; letter-spacing: .08em; }
.player-counter strong { display: block; margin: 4px 0 0; font: 700 30px Georgia, serif; letter-spacing: .04em; }
.player-counter span { display: block; font-size: 9px; opacity: .62; }

.scroll-down { position: absolute; z-index: 8; left: 50%; bottom: 116px; transform: translateX(-50%); background: none; border: 0; color: white; cursor: pointer; opacity: .7; display: grid; place-items: center; gap: 6px; }
.scroll-down span { position: relative; width: 22px; height: 32px; border: 1px solid rgba(255,255,255,.42); border-radius: 20px; }
.scroll-down span::after { content: ""; position: absolute; top: 6px; left: 50%; width: 3px; height: 6px; margin-left: -1.5px; border-radius: 4px; background: white; animation: scrollDot 1.5s infinite; }
.scroll-down small { font-size: 7px; letter-spacing: .28em; }
@keyframes scrollDot { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(11px); } }

.hero-particles span { position: absolute; z-index: 0; width: 3px; height: 3px; border-radius: 50%; background: #ffd8a0; box-shadow: 0 0 10px #ff8c57; opacity: .65; animation: particleFloat var(--dur) linear infinite; }
@keyframes particleFloat { from { transform: translate3d(0, 20px, 0) scale(.6); opacity: 0; } 20% { opacity: .7; } to { transform: translate3d(var(--x), -115px, 0) scale(1.2); opacity: 0; } }

.section-shell { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.story-section, .class-section, .media-section { position: relative; overflow: hidden; background: var(--paper); }
.story-section { padding: 120px 0 125px; background:
  radial-gradient(circle at 15% 40%, rgba(121,152,138,.08), transparent 30%),
  linear-gradient(#f7f3ea,#eee6d7); }
.story-section::before, .class-section::before { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .17; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='110' height='110' viewBox='0 0 110 110'%3E%3Cpath d='M0 70 Q28 40 55 70 T110 70' fill='none' stroke='%236b7c75' stroke-opacity='.24'/%3E%3C/svg%3E"); }
.story-layout { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; gap: 76px; align-items: center; }
.media-frame { position: relative; overflow: hidden; border-radius: 34px 34px 100px 34px; box-shadow: var(--shadow); isolation: isolate; }
.media-frame::after { content: ""; position: absolute; inset: 11px; border: 1px solid rgba(255,255,255,.52); border-radius: 26px 26px 92px 26px; pointer-events: none; }
.media-frame img { width: 100%; aspect-ratio: 16/9; object-fit: cover; transition: transform .7s ease; }
.media-frame:hover img { transform: scale(1.045); }
.media-glass { position: absolute; inset: 0; background: linear-gradient(0deg, rgba(4,18,16,.4), transparent 55%); }
.play-orb { position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); width: 78px; height: 78px; border: 1px solid rgba(255,255,255,.62); border-radius: 50%; background: rgba(8,23,20,.35); backdrop-filter: blur(8px); color: white; display: grid; place-items: center; cursor: pointer; transition: .3s; }
.play-orb svg { width: 26px; height: 26px; fill: currentColor; margin-left: 4px; }
.play-orb:hover { transform: translate(-50%,-50%) scale(1.08); background: rgba(232,84,53,.82); }
.play-ring { position: absolute; inset: -10px; border: 1px solid rgba(255,255,255,.22); border-radius: 50%; animation: ringPulse 2s infinite; }
@keyframes ringPulse { 50% { transform: scale(1.12); opacity: .25; } }
.media-tag { position: absolute; left: 22px; bottom: 18px; display: inline-flex; align-items: center; gap: 10px; color: white; }
.media-tag span { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; background: var(--red); font-weight: 900; font-size: 11px; }
.media-tag b { font-family: var(--serif); letter-spacing: .08em; }
.story-chips { display: flex; gap: 8px; margin: 14px 0 0 16px; flex-wrap: wrap; }
.story-chips span { padding: 8px 14px; border-radius: 999px; border: 1px solid rgba(13,23,21,.12); background: rgba(255,255,255,.45); font-size: 11px; color: #53635d; }
.section-eyebrow { display: flex; align-items: center; gap: 14px; color: #8f7f68; font-size: 10px; letter-spacing: .35em; }
.section-eyebrow i { width: 92px; height: 1px; background: linear-gradient(90deg,#b59a72,transparent); }
.story-copy h2, .media-copy h2 { margin: 15px 0 22px; font: 900 clamp(44px,5vw,72px)/1.08 var(--serif); letter-spacing: .03em; }
.story-copy h2 em, .media-copy h2 em { font-style: normal; color: var(--red); }
.story-copy > p, .media-copy > p { margin: 0; max-width: 530px; line-height: 2; color: #5d665f; font-size: 15px; }
.story-stats { display: flex; gap: 14px; margin: 30px 0; }
.story-stats div { min-width: 96px; padding: 12px 16px; border-radius: 18px; background: rgba(255,255,255,.52); border: 1px solid rgba(69,71,59,.08); box-shadow: 0 10px 26px rgba(70,62,46,.06); }
.story-stats strong { display: block; font: 700 24px Georgia,serif; color: var(--red); }
.story-stats span { font-size: 10px; color: #7b7f77; }
.round-text-btn { display: inline-flex; align-items: center; gap: 14px; padding: 7px 7px 7px 20px; border: 1px solid rgba(13,23,21,.16); border-radius: 999px; background: rgba(255,255,255,.38); color: var(--ink); cursor: pointer; transition: .3s; }
.round-text-btn i { width: 37px; height: 37px; display: grid; place-items: center; border-radius: 50%; background: var(--ink); color: white; font-style: normal; transition: .3s; }
.round-text-btn:hover { border-color: rgba(232,84,53,.35); transform: translateY(-2px); box-shadow: 0 10px 28px rgba(63,52,41,.1); }
.round-text-btn:hover i { transform: rotate(45deg); background: var(--red); }

.class-section { padding: 120px 0 110px; background: linear-gradient(#ede5d7,#f7f3ea); }
.center-title { text-align: center; position: relative; z-index: 2; }
.center-title > span { font-size: 10px; letter-spacing: .42em; color: #96856d; }
.center-title h2 { margin: 10px 0 8px; font: 900 clamp(36px,4.2vw,58px) var(--serif); }
.center-title p { margin: 0; color: #7e8078; font-size: 13px; }
.center-title.light { color: white; }
.center-title.light > span, .center-title.light p { color: rgba(255,255,255,.64); }

.class-stage { margin: 56px auto 0; position: relative; display: grid; grid-template-columns: 70px minmax(0,920px) 70px; align-items: center; justify-content: center; gap: 18px; }
.round-arrow { width: 52px; height: 52px; font-size: 30px; color: var(--ink); background: rgba(255,255,255,.46); border-color: rgba(13,23,21,.14); }
.round-arrow:hover { background: var(--red); color: white; border-color: var(--red); transform: scale(1.06); box-shadow: 0 10px 24px rgba(232,84,53,.18); }
.class-visual-card { position: relative; min-height: 520px; border-radius: 46px 46px 130px 46px; overflow: hidden; display: grid; grid-template-columns: .9fr 1.1fr; background: linear-gradient(125deg,#1b2a27,#0c1514); color: white; box-shadow: 0 35px 70px rgba(42,47,40,.2); }
.class-visual-card::before { content:""; position:absolute; inset:12px; border:1px solid rgba(255,255,255,.09); border-radius:36px 36px 120px 36px; pointer-events:none; z-index:4; }
.class-back-number { position: absolute; right: 6%; top: -11%; z-index: 0; font: 900 190px/1 Georgia,serif; color: rgba(255,255,255,.03); letter-spacing: -.08em; }
.class-portrait-wrap { position: relative; min-height: 520px; overflow: hidden; }
.class-portrait-wrap::after { content:""; position:absolute; inset:0; background: linear-gradient(90deg,transparent 55%,#12201e 98%), linear-gradient(0deg,rgba(10,20,18,.55),transparent 40%); }
.class-portrait-wrap img { width: 100%; height: 100%; object-fit: cover; object-position: center; transition: opacity .24s, transform .55s; }
.class-portrait-wrap.switching img { opacity: 0; transform: scale(1.045); }
.portrait-shine { position: absolute; z-index: 2; inset: -20% 35% -20% -30%; transform: rotate(14deg); background: linear-gradient(100deg,transparent 30%,rgba(255,255,255,.16) 50%,transparent 70%); transition: .8s; }
.class-visual-card:hover .portrait-shine { transform: translateX(70%) rotate(14deg); }
.class-copy { position: relative; z-index: 2; display: flex; flex-direction: column; justify-content: center; padding: 65px 66px 65px 38px; }
.class-copy > span { color: var(--gold); font-size: 10px; letter-spacing: .45em; }
.class-copy h3 { margin: 7px 0 3px; font: 900 66px var(--serif); letter-spacing: .08em; }
.class-copy > p:not(.class-desc) { color: var(--gold-2); margin: 0; font: 700 14px var(--serif); letter-spacing: .08em; }
.class-desc { max-width: 440px; color: rgba(255,255,255,.62); line-height: 1.9; font-size: 13px; }
.stat-bars { margin-top: 22px; display: grid; gap: 10px; max-width: 360px; }
.stat-row { display: grid; grid-template-columns: 44px 1fr 24px; gap: 10px; align-items: center; font-size: 10px; color: rgba(255,255,255,.56); }
.stat-track { height: 5px; border-radius: 999px; background: rgba(255,255,255,.08); overflow: hidden; }
.stat-fill { height: 100%; border-radius: inherit; background: linear-gradient(90deg,var(--gold),var(--red)); transform-origin:left; animation: statIn .6s ease both; }
@keyframes statIn { from { transform: scaleX(0); } }
.class-dots { display: flex; justify-content: center; gap: 12px; margin-top: 26px; }
.class-dot { width: 42px; height: 42px; padding: 0; border: 1px solid rgba(13,23,21,.14); border-radius: 50%; background: rgba(255,255,255,.44); color: #5b625d; cursor: pointer; font: 700 11px var(--serif); transition: .25s; }
.class-dot:hover, .class-dot.active { background: var(--red); border-color: var(--red); color: white; transform: translateY(-3px); box-shadow: 0 8px 22px rgba(232,84,53,.2); }

.feature-section { position: relative; padding: 120px 0; overflow: hidden; color: white; background: #0c1816; }
.feature-bg { position: absolute; inset: 0; background: linear-gradient(90deg,rgba(8,21,19,.92),rgba(9,21,19,.5)), url('assets/hero-world.webp') center/cover no-repeat; filter: saturate(.65) brightness(.65); transform: scale(1.05); }
.feature-section::after { content:""; position:absolute; inset:0; background: radial-gradient(circle at 70% 35%,rgba(216,177,106,.12),transparent 30%), linear-gradient(0deg,rgba(4,12,11,.4),transparent 50%); }
.feature-section .section-shell { position: relative; z-index: 2; }
.feature-wheel { margin-top: 48px; }
.feature-cards { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; }
.feature-card { position: relative; height: 370px; overflow: hidden; border-radius: 28px 28px 72px 28px; cursor: pointer; transition: flex .5s, transform .35s, opacity .35s; isolation: isolate; box-shadow: 0 18px 40px rgba(0,0,0,.18); }
.feature-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.feature-card:hover img, .feature-card.active img { transform: scale(1.06); }
.feature-mask { position: absolute; inset: 0; background: linear-gradient(0deg,rgba(5,15,14,.9),rgba(5,15,14,.1) 62%); }
.feature-index { position: absolute; left: 20px; top: 18px; width: 45px; height: 45px; display:grid; place-items:center; border-radius:50%; border:1px solid rgba(255,255,255,.32); color: var(--gold-2); font:700 12px Georgia,serif; backdrop-filter: blur(8px); }
.feature-copy { position:absolute; left:22px; right:22px; bottom:22px; }
.feature-copy h3 { margin:0 0 7px; font:900 24px var(--serif); }
.feature-copy p { margin:0; font-size:11px; line-height:1.7; color:rgba(255,255,255,.64); }
.feature-card.active { transform: translateY(-8px); box-shadow: 0 26px 54px rgba(0,0,0,.3), 0 0 0 1px rgba(240,213,156,.24); }
.feature-controls { margin-top: 22px; display:flex; align-items:center; justify-content:center; gap:18px; }
.feature-controls .round-arrow { color:white; border-color:rgba(255,255,255,.18); background:rgba(255,255,255,.06); }
.feature-pagination { display:flex; align-items:center; gap:8px; font:700 11px Georgia,serif; color:rgba(255,255,255,.56); }
.feature-pagination span:first-child { color:var(--gold-2); font-size:16px; }
.feature-pagination i { width:60px; height:1px; background:rgba(255,255,255,.22); }

.media-section { padding: 135px 0; background: linear-gradient(#f7f3ea,#ece4d6); }
.media-layout { display:grid; grid-template-columns:.8fr 1.2fr; gap:80px; align-items:center; }
.media-orbit { position:relative; width:min(620px,100%); aspect-ratio:1; margin-left:auto; }
.orbit-ring { position:absolute; border-radius:50%; border:1px solid rgba(79,88,79,.16); }
.ring-1 { inset:5%; animation: spin 28s linear infinite; border-style:dashed; }
.ring-2 { inset:14%; animation: spin 19s linear infinite reverse; border-color:rgba(232,84,53,.2); }
@keyframes spin { to { transform:rotate(360deg); } }
.orbit-core { position:absolute; inset:20%; border-radius:50%; overflow:hidden; box-shadow:0 28px 60px rgba(64,59,48,.2), 0 0 0 13px rgba(255,255,255,.4), 0 0 0 14px rgba(46,56,50,.08); }
.orbit-core img { width:100%; height:100%; object-fit:cover; }
.orbit-label { position:absolute; width:62px; height:62px; display:grid; place-items:center; border-radius:50%; background:rgba(255,255,255,.65); border:1px solid rgba(13,23,21,.12); font:800 12px var(--serif); box-shadow:0 12px 30px rgba(64,59,48,.11); }
.orbit-label.l1 { left:5%; top:31%; }
.orbit-label.l2 { right:3%; top:22%; }
.orbit-label.l3 { right:10%; bottom:18%; background:var(--red); color:white; border-color:var(--red); }

.final-cta { position:relative; min-height:520px; display:grid; place-items:center; overflow:hidden; color:white; background:#0e1b18; }
.final-bg { position:absolute; inset:-4%; background:linear-gradient(0deg,rgba(5,16,14,.8),rgba(5,16,14,.22)), url('assets/hero-world.webp') center 42%/cover no-repeat; filter:saturate(.74); }
.final-inner { position:relative; z-index:2; text-align:center; }
.final-inner > span { letter-spacing:.28em; font-size:11px; color:var(--gold-2); }
.final-inner h2 { margin:12px 0 38px; font:900 clamp(42px,5.2vw,72px) var(--serif); text-shadow:0 8px 30px rgba(0,0,0,.32); }
.static-cta { position:relative; left:auto; bottom:auto; transform:none; margin:0 auto; }
.static-cta:hover { transform:translateY(-5px) scale(1.02); }

footer { padding: 38px 24px 44px; display:grid; grid-template-columns:auto auto 1fr auto; gap:28px; align-items:center; background:#081210; color:rgba(255,255,255,.56); font-size:11px; }
.footer-logo { display:flex; align-items:flex-end; gap:6px; color:#f4d086; font-family:var(--serif); font-weight:900; font-size:20px; }
.footer-logo b { font:800 8px var(--sans); letter-spacing:.18em; color:#f6e5bf; }
footer p { margin:0; color:rgba(255,255,255,.7); }
footer nav { display:flex; justify-content:center; gap:22px; }
footer a:hover { color:white; }
footer small { opacity:.6; }

.to-top { position:fixed; z-index:80; right:22px; bottom:22px; width:46px; height:46px; opacity:0; pointer-events:none; transform:translateY(8px); color:white; background:rgba(8,21,18,.74); }
.to-top.show { opacity:1; pointer-events:auto; transform:translateY(0); }
.to-top:hover { background:var(--red); border-color:var(--red); }

.modal { position:fixed; inset:0; z-index:1500; visibility:hidden; opacity:0; transition:.25s; }
.modal.show { visibility:visible; opacity:1; }
.modal-backdrop { position:absolute; inset:0; background:rgba(2,10,9,.72); backdrop-filter:blur(10px); }
.modal-panel { position:absolute; left:50%; top:50%; transform:translate(-50%,-46%) scale(.97); opacity:0; transition:.32s cubic-bezier(.2,.8,.2,1); }
.modal.show .modal-panel { transform:translate(-50%,-50%) scale(1); opacity:1; }
.modal-close { position:absolute; z-index:5; right:18px; top:18px; width:44px; height:44px; background:rgba(11,26,23,.78); font-size:24px; }
.download-sheet, .world-sheet { width:min(680px,calc(100% - 30px)); padding:48px; border-radius:38px 38px 100px 38px; background:linear-gradient(145deg,#fbf7ef,#e9dfcd); color:var(--ink); box-shadow:0 40px 100px rgba(0,0,0,.35); }
.sheet-mark { color:#9b8767; letter-spacing:.35em; font-size:10px; }
.download-sheet h2, .world-sheet h2 { margin:10px 0 8px; font:900 42px var(--serif); }
.download-sheet > p, .world-sheet > p { color:#6c746e; line-height:1.8; }
.download-options { display:grid; gap:10px; margin:24px 0 12px; }
.download-option { min-height:74px; padding:8px 12px; display:grid; grid-template-columns:50px 1fr 42px; gap:12px; align-items:center; border:1px solid rgba(13,23,21,.1); border-radius:24px 40px 40px 24px; background:rgba(255,255,255,.6); color:var(--ink); cursor:pointer; text-align:left; transition:.25s; }
.download-option:hover { transform:translateX(5px); border-color:rgba(232,84,53,.24); box-shadow:0 12px 28px rgba(57,48,38,.08); }
.download-icon { width:48px; height:48px; display:grid; place-items:center; border-radius:50%; background:var(--ink); color:white; font-size:10px; font-weight:800; }
.download-option > span:nth-child(2) { display:grid; gap:3px; }
.download-option small { color:#88908a; font-size:9px; }
.download-option b { font-size:14px; }
.download-option i { width:36px; height:36px; display:grid; place-items:center; border-radius:50%; background:var(--red); color:white; font-style:normal; }
.sheet-note { color:#9a9d96; }
.world-tags { display:flex; flex-wrap:wrap; gap:8px; margin-top:22px; }
.world-tags span { padding:8px 13px; border-radius:999px; background:rgba(126,199,170,.11); border:1px solid rgba(126,199,170,.2); color:#49695d; font-size:11px; }
.video-sheet { width:min(920px,calc(100% - 30px)); }
.video-poster { position:relative; border-radius:32px 32px 88px 32px; overflow:hidden; box-shadow:0 40px 100px rgba(0,0,0,.45); }
.video-poster img { width:100%; aspect-ratio:16/9; object-fit:cover; filter:brightness(.76); }
.play-orb.big { width:96px; height:96px; }
.video-caption { position:absolute; left:28px; bottom:24px; color:white; display:grid; gap:4px; }
.video-caption span { font-size:9px; letter-spacing:.28em; color:var(--gold-2); }
.video-caption b { font:800 20px var(--serif); }

.toast { position:fixed; z-index:2000; left:50%; bottom:28px; transform:translate(-50%,18px); opacity:0; pointer-events:none; padding:10px 16px; border-radius:999px; background:rgba(8,20,18,.92); color:white; font-size:12px; box-shadow:0 12px 30px rgba(0,0,0,.2); transition:.25s; }
.toast.show { opacity:1; transform:translate(-50%,0); }

.reveal { opacity:0; transform:translateY(28px); transition:opacity .8s ease,transform .8s ease; }
.reveal.visible { opacity:1; transform:none; }
.delay-1 { transition-delay:.14s; }

@media (max-width: 1180px) {
  .side-rail { width: 126px; }
  .rail-nav { width: 108px; }
  .rail-link em { font-size: 13px; }
  .hero-center { left: 52%; top: 13%; }
  .hero-line { display:none; }
  .hero-character-wrap { right: 2%; width: 48vw; }
  .platform-quick { left: 7%; }
  .class-visual-card { grid-template-columns: 1fr 1fr; }
  .class-copy { padding-right: 42px; }
}

@media (max-width: 900px) {
  .side-rail { transform:translateX(-110%); width:260px; background:rgba(8,21,18,.94); backdrop-filter:blur(18px); transition:.35s; }
  .side-rail.open { transform:translateX(0); }
  .rail-nav { position:relative; left:0; top:auto; width:100%; margin-top:70px; gap:22px; }
  .rail-link em { font-size:17px; }
  .rail-bottom { display:none; }
  .mobile-head { display:flex; position:fixed; z-index:110; left:0; right:0; top:0; height:70px; padding:0 16px; align-items:center; justify-content:space-between; background:linear-gradient(180deg,rgba(4,14,12,.72),transparent); color:white; pointer-events:none; }
  .mini-brand, .mobile-menu-btn { pointer-events:auto; }
  .mini-brand { display:grid; line-height:1; font-family:var(--serif); font-weight:900; color:#f2ce85; text-shadow:0 2px 8px rgba(0,0,0,.35); }
  .mini-brand b { margin-top:4px; font:800 7px var(--sans); letter-spacing:.28em; color:white; }
  .mobile-menu-btn { width:44px; height:44px; gap:4px; background:rgba(5,18,16,.5); }
  .mobile-menu-btn span { display:block; width:17px; height:1px; background:white; transition:.25s; }
  .mobile-menu-btn.open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
  .mobile-menu-btn.open span:nth-child(2){opacity:0}
  .mobile-menu-btn.open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

  .hero { min-height: 790px; }
  .hero-center { top: 16%; left:50%; width:90vw; }
  .hero-kicker { font-size:9px; letter-spacing:.22em; }
  .hero-title .title-small,.hero-title strong { font-size:clamp(64px,18vw,110px); }
  .hero-title b { right:3%; bottom:-17px; font-size:17px; }
  .hero-subtitle { font-size:20px; }
  .hero-character-wrap { width:75vw; right:-9%; bottom:95px; opacity:.82; }
  .hero-socials { right:14px; top:84px; flex-direction:column; }
  .circle-action { width:39px; height:39px; }
  .platform-quick { left:14px; bottom:20px; }
  .platform-pill { min-width:auto; width:138px; height:55px; padding-right:11px; }
  .platform-icon { width:34px; height:34px; }
  .platform-pill small { display:none; }
  .main-cta { bottom:86px; width:210px; height:68px; }
  .cta-copy b { font-size:20px; }
  .player-counter { display:none; }
  .scroll-down { display:none; }

  .story-section,.class-section,.feature-section,.media-section { padding:90px 0; }
  .section-shell { width:min(100% - 30px,1180px); }
  .story-layout,.media-layout { grid-template-columns:1fr; gap:45px; }
  .story-copy { max-width:650px; }
  .media-orbit { margin:0 auto; }
  .class-stage { grid-template-columns:48px 1fr 48px; gap:8px; }
  .round-arrow { width:44px; height:44px; }
  .class-visual-card { min-height:500px; grid-template-columns:1fr 1fr; }
  .class-portrait-wrap { min-height:500px; }
  .class-copy { padding:42px 28px; }
  .class-copy h3 { font-size:52px; }
  .feature-cards { grid-template-columns:repeat(2,1fr); }
  footer { grid-template-columns:1fr; text-align:center; justify-items:center; }
}

@media (max-width: 640px) {
  .hero { min-height: 740px; }
  .hero-world { background-position: 56% center; filter:saturate(.8) brightness(.82); }
  .hero-character-wrap { width: 98vw; right:-27%; bottom:100px; opacity:.76; }
  .hero-vignette { background:linear-gradient(90deg,rgba(4,15,13,.52),rgba(4,15,13,.12)),linear-gradient(0deg,rgba(4,15,13,.72),transparent 45%); }
  .hero-center { top:18%; }
  .hero-title { margin-top:13px; }
  .hero-title .title-small,.hero-title strong { font-size:clamp(54px,18vw,82px); -webkit-text-stroke-width:1px; text-shadow:3px 3px 0 #c6482e, 5px 5px 0 rgba(69,25,20,.35); }
  .hero-subtitle { font-size:17px; }
  .hero-socials { top:auto; bottom:172px; right:10px; }
  .hero-socials .circle-action:nth-child(1), .hero-socials .circle-action:nth-child(2) { display:none; }
  .platform-quick { right:12px; left:12px; bottom:12px; display:grid; grid-template-columns:1fr 1fr; }
  .platform-pill { width:100%; border-radius:18px 30px 30px 18px; }
  .main-cta { bottom:88px; width:202px; height:66px; }
  .cta-copy b { font-size:18px; }

  .story-layout { gap:36px; }
  .media-frame { border-radius:25px 25px 70px 25px; }
  .story-copy h2,.media-copy h2 { font-size:44px; }
  .story-stats { gap:8px; }
  .story-stats div { min-width:0; flex:1; padding:10px; }
  .class-stage { display:block; }
  .class-prev,.class-next { position:absolute; z-index:6; top:46%; }
  .class-prev { left:8px; }
  .class-next { right:8px; }
  .class-visual-card { min-height:710px; grid-template-columns:1fr; border-radius:34px 34px 90px 34px; }
  .class-portrait-wrap { min-height:390px; max-height:390px; }
  .class-portrait-wrap::after { background:linear-gradient(0deg,#12201e 0,transparent 55%); }
  .class-copy { margin-top:-65px; padding:30px 28px 34px; }
  .class-copy h3 { font-size:48px; }
  .class-back-number { font-size:120px; }
  .class-dots { gap:7px; flex-wrap:wrap; }
  .class-dot { width:38px; height:38px; }
  .feature-cards { display:flex; overflow:hidden; gap:10px; }
  .feature-card { min-width:86%; height:380px; transform:translateX(calc(var(--feature-index,0) * -100%)); transition:transform .4s ease; }
  .feature-card.active { transform:translateX(calc(var(--feature-index,0) * -100%)) translateY(-4px); }
  .media-orbit { width:100%; }
  .orbit-label { width:52px; height:52px; font-size:10px; }
  .final-cta { min-height:430px; }
  .final-inner h2 { font-size:44px; }
  .download-sheet,.world-sheet { padding:36px 20px 28px; border-radius:28px 28px 70px 28px; }
  .download-sheet h2,.world-sheet h2 { font-size:34px; }
  .modal-close { right:12px; top:12px; }
  .video-poster { border-radius:24px 24px 70px 24px; }
  .play-orb.big { width:76px; height:76px; }
  .video-caption b { font-size:15px; }
}

@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after { animation-duration:.01ms !important; animation-iteration-count:1 !important; scroll-behavior:auto !important; transition-duration:.01ms !important; }
}


/* === 天涯江湖正式版覆盖 === */
.hero-title-custom strong {
  font-size: clamp(52px, 7vw, 118px);
  letter-spacing: -.06em;
  white-space: nowrap;
}
.rail-brand .rail-brand-cn { line-height: 1.25; text-align: center; }
.mini-brand span { font-size: 17px; letter-spacing: -.04em; }
.platform-pill, .main-cta, .round-text-btn { text-decoration: none; }
.media-frame { background: #000; }
.story-video {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  display: block;
  background: #000;
  position: relative;
  z-index: 1;
  pointer-events: auto !important;
}
.media-frame .media-glass { pointer-events: none; z-index: 2; }
.media-frame .media-tag { pointer-events: none; z-index: 7; bottom: 56px; }
.story-video-fallback {
  display: inline-flex;
  position: absolute;
  right: 16px;
  top: 16px;
  z-index: 8;
  padding: 8px 12px;
  border: 1px solid rgba(255,255,255,.26);
  border-radius: 999px;
  background: rgba(5,16,14,.68);
  backdrop-filter: blur(8px);
  color: #fff;
  text-decoration: none;
  font-size: 11px;
  line-height: 1.2;
}
.media-frame.video-playing .media-tag,
.media-frame.video-playing .story-video-fallback,
.media-frame.video-playing .media-glass,
.media-frame.video-playing::after {
  display: none !important;
}
@media (max-width: 640px) {
  .media-frame .media-tag { bottom: 52px; left: 14px; }
  .media-tag span { width: 36px; height: 36px; }
  .story-video-fallback { right: 10px; top: 10px; padding: 7px 10px; font-size: 10px; }
  .hero-title-custom strong { font-size: clamp(54px, 18vw, 82px); }
}