/* ════════════════════════════════════════════
   三国群英传·国战版 — 二周年庆典专题页 v2
   主题：玄黑鎏金 · 深色周年庆典
   结构不变，配色从浅色纸卷翻转为深色鎏金
   ════════════════════════════════════════════ */

:root {
  /* ── 深色基底 ── */
  --ink: #0c0a08;
  --night: #15100b;
  --charcoal: #1c1610;
  --parchment: #1e1812;
  /* ── 鎏金体系 ── */
  --gold-dark: #8a6a2e;
  --gold: #c9a44c;
  --bright-gold: #e5c36c;
  --pale-gold: #f0d081;
  --gold-glow: rgba(229, 195, 108, .15);
  /* ── 朱红体系 ── */
  --crimson: #9c2820;
  --vermilion: #c84030;
  --ember: #cc5a28;
  /* ── 文字色 ── */
  --text-main: #ddd0b6;
  --text-body: #c4b598;
  --text-muted: #8a7d65;
  --text-dim: #6b6050;
  /* ── 表面色 ── */
  --surface: #18120c;
  --surface-raised: #211a13;
  --surface-overlay: #2a1f16;
  --border-gold: rgba(201, 164, 76, .25);
  --border-faint: rgba(201, 164, 76, .12);
  --shadow: rgba(0, 0, 0, .5);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--text-main);
  background:
    radial-gradient(ellipse at 15% 5%, rgba(201, 164, 76, .06), transparent 35%),
    radial-gradient(ellipse at 85% 95%, rgba(156, 40, 32, .04), transparent 30%),
    linear-gradient(90deg, rgba(201, 164, 76, .02) 1px, transparent 1px),
    linear-gradient(180deg, #0c0a08, #15100b);
  background-size: auto, auto, 58px 58px, auto;
  font-family: "Noto Serif SC", "Songti SC", serif;
}

a { color: inherit; text-decoration: none; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ── 颗粒纹理叠层 ── */
.grain {
  position: fixed; inset: 0; z-index: 20; pointer-events: none; opacity: .08;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.3'/%3E%3C/svg%3E");
}

/* ── 顶栏 ── */
.topbar {
  position: absolute; z-index: 10; top: 0; left: 0; width: 100%;
  min-height: 88px; padding: 18px clamp(20px, 5vw, 86px);
  display: flex; align-items: center; justify-content: space-between;
  color: #f4ead1;
  background: linear-gradient(180deg, rgba(8, 6, 5, .9), transparent);
}
.brand { display: flex; align-items: center; }
.brand img {
  display: block; width: clamp(186px, 14vw, 274px); height: auto;
  filter: drop-shadow(0 2px 6px rgba(229, 195, 108, .3));
}
.top-actions { display: flex; gap: 10px; }
.top-actions a {
  min-width: 108px; padding: 11px 18px; text-align: center;
  font-size: 15px; letter-spacing: 2px; transition: .25s ease;
}
.ink-button {
  border: 1px solid rgba(229, 195, 108, .35);
  background: rgba(28, 22, 16, .7);
  color: var(--bright-gold);
}
.gold-button {
  color: #1a1208;
  background: linear-gradient(135deg, #f0d081, #b88a36 52%, #e5c36c);
  border: 1px solid #f0d081;
  box-shadow: 0 2px 12px rgba(229, 195, 108, .2);
}
.top-actions a:hover { transform: translateY(-2px); filter: brightness(1.15); }

/* ════════ HERO ════════ */
.hero {
  position: relative; overflow: hidden;
  min-height: 700px; height: min(100vh, 58vw);
  display: flex; align-items: center; justify-content: flex-end;
  color: #fff0c8;
  background: #0c0a08 url("https://img.fxegames.com/fxegames/sgm/2ndanniversary/bg_2nd.png") center / cover no-repeat;
}
.hero::before {
  content: ""; position: absolute; z-index: 3; inset: 16px;
  border: 1px solid rgba(229, 195, 108, .14);
  box-shadow: inset 0 0 0 5px rgba(229, 195, 108, .03);
  pointer-events: none;
}
.hero::after {
  content: ""; position: absolute; z-index: 1; inset: 0;
  background:
    linear-gradient(90deg, rgba(12, 10, 8, .18), transparent 24%, transparent 72%, rgba(12, 10, 8, .08)),
    linear-gradient(0deg, rgba(12, 10, 8, .54), transparent 28%);
  pointer-events: none;
}

.hero-effects {
  position: absolute;
  inset: 0;
  z-index: 2;
  overflow: hidden;
  pointer-events: none;
}
.hero-effects::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -12%;
  height: 42%;
  background:
    linear-gradient(15deg, transparent 0 22%, rgba(226, 85, 28, .11) 42%, transparent 64%),
    linear-gradient(-12deg, transparent 0 36%, rgba(250, 186, 80, .08) 54%, transparent 74%);
  filter: blur(18px);
  opacity: .8;
  transform-origin: 50% 100%;
  animation: fire-breath 5.8s ease-in-out infinite alternate;
}
.ember {
  position: absolute;
  left: var(--x);
  bottom: -24px;
  width: var(--size);
  height: var(--size);
  border-radius: 50%;
  background: #f3a33d;
  box-shadow: 0 0 8px rgba(244, 135, 45, .78), 0 0 18px rgba(201, 56, 25, .28);
  opacity: 0;
  transform: translate3d(0, 0, 0) scale(.7);
  animation: ember-rise var(--dur) linear infinite;
  animation-delay: var(--delay);
}
.hero-cursor-glow {
  position: absolute;
  z-index: 2;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity .32s ease;
  mix-blend-mode: screen;
  transform: translateX(60px);
  --flare-core-x: 30%;
  --flare-core-y: 24%;
  --flare-ring-a-x: 36%;
  --flare-ring-a-y: 20%;
  --flare-ring-b-x: 24%;
  --flare-ring-b-y: 28%;
  --flare-ghost-a-x: 42%;
  --flare-ghost-a-y: 16%;
  --flare-ghost-b-x: 20%;
  --flare-ghost-b-y: 34%;
  --flare-ghost-c-x: 14%;
  --flare-ghost-c-y: 40%;
}
.hero-cursor-glow i {
  position: absolute;
  display: block;
  pointer-events: none;
  border-radius: 50%;
  transform: translate3d(-50%, -50%, 0);
  will-change: left, top;
}
.flare-core {
  left: var(--flare-core-x);
  top: var(--flare-core-y);
  width: 170px;
  height: 170px;
  background:
    radial-gradient(circle, rgba(255, 252, 224, .58) 0%, rgba(255, 218, 124, .26) 20%, rgba(230, 112, 38, .1) 45%, transparent 72%);
  box-shadow:
    0 0 42px rgba(255, 229, 146, .36),
    0 0 110px rgba(230, 103, 32, .18);
  filter: blur(1.2px);
  opacity: .8;
}
.flare-ring {
  border: 1px solid rgba(255, 238, 177, .28);
  background:
    radial-gradient(circle, transparent 56%, rgba(255, 238, 180, .11) 61%, transparent 70%),
    radial-gradient(circle, rgba(255, 247, 217, .07), transparent 50%);
  box-shadow:
    inset 0 0 22px rgba(255, 229, 148, .14),
    0 0 28px rgba(255, 222, 140, .11);
}
.flare-ring-a {
  left: var(--flare-ring-a-x);
  top: var(--flare-ring-a-y);
  width: 284px;
  height: 284px;
  opacity: .54;
}
.flare-ring-b {
  left: var(--flare-ring-b-x);
  top: var(--flare-ring-b-y);
  width: 108px;
  height: 108px;
  opacity: .58;
}
.flare-ghost {
  background: radial-gradient(circle, rgba(255, 248, 213, .42) 0%, rgba(250, 181, 70, .14) 42%, transparent 74%);
  box-shadow: 0 0 24px rgba(255, 219, 132, .18);
  filter: blur(.6px);
}
.flare-ghost-a {
  left: var(--flare-ghost-a-x);
  top: var(--flare-ghost-a-y);
  width: 42px;
  height: 42px;
  opacity: .54;
}
.flare-ghost-b {
  left: var(--flare-ghost-b-x);
  top: var(--flare-ghost-b-y);
  width: 68px;
  height: 68px;
  opacity: .5;
}
.flare-ghost-c {
  left: var(--flare-ghost-c-x);
  top: var(--flare-ghost-c-y);
  width: 28px;
  height: 28px;
  opacity: .46;
}
.hero.is-glow-active .hero-cursor-glow {
  opacity: .82;
}

.hero-copy {
  position: relative; z-index: 4;
  width: min(1200px, calc(100% - 80px));
  margin: -2vh auto 0;
  text-align: left;
  animation: reveal 1s both cubic-bezier(.2, .8, .2, 1);
}
.hero-slogan {
  display: block;
  width: clamp(500px, 43vw, 780px);
  margin-left: -40px;
  height: auto;
  filter: drop-shadow(0 14px 22px rgba(94, 25, 11, .24));
}
.hero-date {
  display: flex; justify-content: center; align-items: center;
  width: clamp(500px, 43vw, 780px);
  gap: 14px; margin: -22px 0 26px -70px; color: var(--pale-gold);
  font-family: "Noto Serif SC", serif;
  font-size: 14px; letter-spacing: 2px;
}
.hero-date span {
  padding: 7px 13px;
  border: 1px solid rgba(240, 208, 129, .78);
  background: linear-gradient(180deg, rgba(78, 22, 13, .9), rgba(126, 38, 20, .86));
  color: #ffe7a5;
  font-weight: 900;
  box-shadow: 0 8px 22px rgba(40, 8, 3, .34), inset 0 0 12px rgba(255, 224, 142, .12);
}
.hero-date b {
  color: #ffe7a5;
  text-shadow:
    0 2px 4px rgba(34, 8, 3, .95),
    0 0 10px rgba(255, 216, 116, .58),
    0 0 18px rgba(126, 38, 20, .8);
}

/* ── 进入按钮 ── */
.enter-button {
  position: relative; overflow: hidden;
  display: inline-flex; flex-direction: column; justify-content: center; align-items: center;
  width: 220px; height: 72px; color: #fff0c8;
  margin-left: calc(-70px + (clamp(500px, 43vw, 780px) - 220px) / 2);
  text-align: center;
  background: linear-gradient(135deg, #9c2820, #6b1a14 55%, #c9a44c);
  clip-path: polygon(10% 0, 90% 0, 100% 50%, 90% 100%, 10% 100%, 0 50%);
  filter: drop-shadow(0 12px 28px rgba(0, 0, 0, .5));
  transition: .3s ease;
}
.enter-button::before {
  content: ""; position: absolute; inset: 5px 13px;
  border: 1px solid rgba(240, 208, 129, .5);
  clip-path: inherit;
}
.enter-button span { position: relative; font-size: 20px; font-weight: 900; letter-spacing: 7px; }
.enter-button small { position: relative; font-size: 8px; letter-spacing: 3px; opacity: .7; }
.enter-button:hover {
  transform: translateY(-4px) scale(1.03);
  filter: drop-shadow(0 16px 36px rgba(0, 0, 0, .6)) brightness(1.1);
}
@media (min-width: 761px) {
  .enter-button::after {
    content: ""; position: absolute; z-index: 1;
    top: -35%; bottom: -35%; left: 0; width: 26%; pointer-events: none;
    background: linear-gradient(90deg, transparent, rgba(255, 235, 174, .68), transparent);
    filter: blur(1px); animation: button-shine 4.2s ease-in-out infinite;
  }
}

.scroll-mark {
  position: relative; z-index: 5;
  width: fit-content;
  margin: 16px 0 0;
  color: var(--bright-gold); font-size: 10px; letter-spacing: 4px; opacity: .6;
  writing-mode: horizontal-tb;
}
.scroll-mark span {
  display: block;
  margin-top: 2px;
  animation: float 1.2s infinite alternate;
}

/* ════════ 活动导航 ════════ */
.event-nav {
  position: sticky; z-index: 9; top: 0;
  display: grid; grid-template-columns: repeat(5, 1fr);
  min-height: 84px; color: var(--text-main);
  background: linear-gradient(180deg, rgba(12, 10, 8, .98), rgba(21, 16, 11, .98));
  border-top: 1px solid var(--gold-dark);
  border-bottom: 1px solid var(--gold-dark);
  box-shadow: 0 10px 35px rgba(0, 0, 0, .4);
  backdrop-filter: blur(10px);
}
.event-nav a {
  position: relative; display: flex; justify-content: center; align-items: center;
  gap: 11px; padding: 12px;
  border-right: 1px solid var(--border-faint);
  transition: .25s;
}
.event-nav a::after {
  content: ""; position: absolute; bottom: 0; left: 20%; width: 60%; height: 2px;
  background: var(--bright-gold); transform: scaleX(0); transition: .25s;
  box-shadow: 0 0 8px rgba(229, 195, 108, .4);
}
.event-nav a:hover, .event-nav a.active {
  color: #ffe8a4; background: rgba(156, 40, 32, .15);
}
.event-nav a:hover::after, .event-nav a.active::after { transform: scaleX(1); }
.event-nav em {
  color: var(--bright-gold); font-family: "Ma Shan Zheng", serif;
  font-size: 25px; font-style: normal; font-weight: 400;
  text-shadow: 0 0 10px rgba(229, 195, 108, .15);
}
.event-nav span { font-size: 14px; line-height: 1.55; letter-spacing: 2px; }
.back-top { background: rgba(201, 164, 76, .06); }

/* ════════ 活动区域 ════════ */
.events { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 110px 0 140px; }
.section-heading { text-align: center; margin-bottom: 75px; }
.section-heading p {
  margin: 0; color: var(--gold); font-size: 10px; font-weight: 900; letter-spacing: 8px;
}
.section-heading h2 {
  margin: 10px 0 14px; color: var(--pale-gold);
  font-family: "Ma Shan Zheng", serif; font-size: clamp(38px, 5vw, 60px);
  font-weight: 400; letter-spacing: 8px;
  text-shadow: 0 0 30px rgba(229, 195, 108, .1);
}
.section-heading span { color: var(--text-muted); font-size: 14px; letter-spacing: 2px; }

/* ════════ 活动卡片 ════════ */
.event-card {
  position: relative; overflow: hidden; scroll-margin-top: 104px;
  height: 700px; display: block; margin-bottom: 100px;
  background: var(--surface);
  border: 1px solid var(--border-gold);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .5), inset 0 0 0 1px rgba(229, 195, 108, .03);
}
.event-card::after {
  content: ""; position: absolute; z-index: 4; pointer-events: none; inset: 12px;
  border: 1px solid var(--border-faint);
}

/* 卡片视觉区 */
.event-visual {
  position: absolute; z-index: 1; overflow: hidden;
  top: 0; bottom: 0; left: 0; width: 55%; opacity: .85;
  background: #0c0a08 center / cover no-repeat;
  -webkit-mask-image: linear-gradient(90deg, #000 0%, #000 72%, rgba(0,0,0,.78) 82%, transparent 100%);
  mask-image: linear-gradient(90deg, #000 0%, #000 72%, rgba(0,0,0,.78) 82%, transparent 100%);
}
.event-card.reverse .event-visual {
  left: auto; right: 0;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, rgba(0,0,0,.78) 18%, #000 28%, #000 100%);
  mask-image: linear-gradient(90deg, transparent 0%, rgba(0,0,0,.78) 18%, #000 28%, #000 100%);
}
/* 视觉区装饰线条 */
.event-visual::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 50% 35%, rgba(240, 208, 129, .12), transparent 35%),
    linear-gradient(180deg, rgba(12, 10, 8, .05), rgba(12, 10, 8, .35));
}
.event-visual::after {
  display: none;
}

/* 各活动配图 */
.buff-visual { background-image: url("https://img.fxegames.com/fxegames/sgm/2ndanniversary/event-buff.png"); background-position: 46% center; }
.forge-visual { background-image: url("https://img.fxegames.com/fxegames/sgm/2ndanniversary/event-forge.png"); background-position: 50% center; }
.ceremony-visual { background-image: url("https://img.fxegames.com/fxegames/sgm/2ndanniversary/event-ceremony.png"); background-position: 50% center; }
.peak-visual { background-image: url("https://img.fxegames.com/fxegames/sgm/2ndanniversary/event-peak.png"); background-position: 52% center; }

/* ── 卡片内容区 ── */
.event-content {
  position: absolute; z-index: 2; inset: 13px;
  display: grid; grid-template-rows: auto minmax(0, 1fr); overflow: hidden;
}
.event-heading { padding: 36px clamp(34px, 4vw, 54px) 8px calc(48% + 42px); }
.event-scroll {
  min-height: 0; padding: 0 clamp(34px, 4vw, 54px) 35px calc(48% + 42px);
  overflow-y: auto; overscroll-behavior: contain; scrollbar-gutter: stable;
  scrollbar-width: thin; scrollbar-color: rgba(201, 164, 76, .2) transparent;
}
.event-card.reverse .event-heading,
.event-card.reverse .event-scroll {
  padding-left: clamp(34px, 4vw, 54px); padding-right: calc(48% + 42px);
}
.event-scroll::-webkit-scrollbar { width: 6px; }
.event-scroll::-webkit-scrollbar-track { background: transparent; }
.event-scroll::-webkit-scrollbar-thumb {
  background: rgba(201, 164, 76, .2); border-radius: 8px;
}
.event-card:hover .event-scroll { scrollbar-color: rgba(201, 164, 76, .35) transparent; }
.event-card:hover .event-scroll::-webkit-scrollbar-thumb { background: rgba(201, 164, 76, .3); }

.event-index {
  margin: 0; color: var(--gold); font-size: 12px; font-weight: 900; letter-spacing: 6px;
}
.event-content h3 {
  margin: 12px 0 20px; color: var(--pale-gold);
  font-family: "Ma Shan Zheng", serif; font-size: clamp(36px, 4vw, 54px);
  font-weight: 400; letter-spacing: 5px;
  overflow: visible;
  text-shadow: 0 0 25px rgba(229, 195, 108, .08);
}
.event-content h3 span + span { margin-left: .45em; }
.event-theme {
  margin: -8px 0 12px; color: var(--vermilion); font-weight: 900; letter-spacing: 2px;
}
.event-content h4 {
  margin: 18px 0 8px; color: var(--bright-gold); font-size: 15px; letter-spacing: 4px;
}

/* ── 时间线列表（EVENT 01 用） ── */
.timeline-list section {
  position: relative; padding-left: 0;
}
.timeline-list section::before {
  display: none;
}

/* ── 元信息网格 ── */
.event-meta {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 12px 0 8px;
}
.event-meta span {
  padding: 10px 12px; color: var(--text-body);
  border-left: 2px solid var(--gold);
  background: rgba(201, 164, 76, .05);
  font-size: 13px; line-height: 1.65;
}
.event-meta small { display: block; color: var(--gold); font-size: 11px; letter-spacing: 2px; }

/* ── 活动规则文本块 ── */
.event-rule {
  margin: 0; padding: 12px 15px; color: var(--text-body);
  background: rgba(201, 164, 76, .04);
  border: 1px solid var(--border-faint);
  font-size: 14px; line-height: 1.85;
}

/* ── 排名规则列表 ── */
.rule-list {
  margin: 5px 0 14px; padding-left: 20px; color: var(--text-body);
  font-size: 14px; line-height: 1.85;
}
.rule-list li {
  padding: 5px 0 5px 4px;
  border-bottom: 1px dashed rgba(201, 164, 76, .12);
}

/* ── 资格/提示标注 ── */
.reward-callout {
  margin: 12px 0 0; padding: 12px 14px; color: var(--text-body);
  border: 1px solid var(--border-gold);
  background: rgba(201, 164, 76, .06);
  font-size: 13px; line-height: 1.8;
}
.reward-callout span {
  margin-right: 10px; color: var(--vermilion); font-weight: 900; letter-spacing: 2px;
}

.live-note {
  margin: 18px 0 0; color: var(--vermilion);
  font-size: 13px; font-weight: 900; letter-spacing: .5px; line-height: 1.6;
}

/* ── 数据网格（EVENT 03/04 用） ── */
.data-grid { display: grid; gap: 8px; margin: 12px 0 16px; }
.data-grid p {
  display: grid; grid-template-columns: minmax(120px, .38fr) 1fr; gap: 12px;
  margin: 0; padding: 11px 12px;
  background: rgba(201, 164, 76, .04);
  font-size: 13px; line-height: 1.75;
}
.data-grid b { color: var(--vermilion); }
.data-grid span { color: var(--text-body); }

.forge-formula {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin: 2px 0 10px;
  padding: 14px 16px;
  border: 1px solid rgba(201, 164, 76, .22);
  background: linear-gradient(180deg, rgba(18, 13, 9, .72), rgba(42, 31, 22, .42));
}
.forge-formula figure {
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.forge-formula img {
  display: block;
  width: 58px;
  height: 58px;
  object-fit: cover;
  border: 1px solid rgba(229, 195, 108, .24);
  box-shadow: 0 8px 18px rgba(0, 0, 0, .32);
}
.formula-symbol {
  color: var(--pale-gold);
  font-size: 18px;
  font-weight: 900;
}
.formula-result {
  gap: 10px;
  min-width: 174px;
  padding: 8px 12px;
  border: 1px solid rgba(229, 195, 108, .48);
  background: rgba(12, 10, 8, .42);
}
.formula-result figcaption {
  color: #ffe7a5;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 1px;
  white-space: nowrap;
}

/* ── 兑换表格 ── */
.data-table { margin: 10px 0 16px; border: 1px solid var(--border-gold); }
.data-table p {
  display: grid; grid-template-columns: 1.2fr 1fr;
  margin: 0; border-bottom: 1px solid var(--border-faint);
}
.data-table-two p { grid-template-columns: 1.2fr 1fr; }
.data-table p:last-child { border-bottom: 0; }
.data-table span {
  padding: 9px; color: var(--text-body); font-size: 13px; line-height: 1.55;
  border-right: 1px solid var(--border-faint);
}
.data-table span:last-child { border-right: 0; text-align: center; }
.data-table .table-head { background: rgba(201, 164, 76, .08); }
.data-table .table-head span { color: var(--bright-gold); font-weight: 900; }

/* ── VIP 权益行（EVENT 04 用） ── */
.reward-row {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 8px 0 12px;
}
.reward-row span {
  padding: 12px 10px; text-align: center; color: var(--text-body);
  border: 1px solid var(--border-gold);
  background: rgba(201, 164, 76, .04);
  font-size: 12px; line-height: 1.7;
}
.reward-row b { display: block; margin-bottom: 4px; color: var(--pale-gold); font-size: 17px; }

/* ════════ 页脚 ════════ */
footer {
  padding: 60px 20px; text-align: center;
  color: rgba(221, 208, 182, .5);
  background: #0c0a08;
  border-top: 1px solid var(--gold-dark);
}
.footer-seal {
  width: 50px; height: 50px; margin: 0 auto 18px;
  display: grid; place-items: center;
  color: var(--bright-gold); border: 1px solid var(--gold-dark);
  font: 24px "Ma Shan Zheng", serif; transform: rotate(-3deg);
  box-shadow: 0 0 20px rgba(229, 195, 108, .08);
}
footer p { margin: 0 0 8px; color: var(--pale-gold); font-size: 20px; font-weight: 900; letter-spacing: 4px; }
footer small { font-size: 13px; letter-spacing: 3px; }

/* ════════ 动画 ════════ */
@keyframes reveal {
  from { opacity: 0; transform: translateY(28px) scale(.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes float {
  from { transform: translateY(0); }
  to { transform: translateY(8px); }
}
@keyframes fire-breath {
  from { opacity: .48; transform: translate3d(-1%, 0, 0) scaleX(1); }
  to { opacity: .82; transform: translate3d(1.5%, -2%, 0) scaleX(1.04); }
}
@keyframes ember-rise {
  0% {
    opacity: 0;
    transform: translate3d(0, 0, 0) scale(.45);
  }
  12% { opacity: .88; }
  68% { opacity: .65; }
  100% {
    opacity: 0;
    transform: translate3d(var(--drift), -118vh, 0) scale(1);
  }
}
@keyframes button-shine {
  0%, 58% { transform: translateX(-170%) skewX(-24deg); opacity: 0; }
  66% { opacity: .7; }
  82%, 100% { transform: translateX(250%) skewX(-24deg); opacity: 0; }
}

/* ════════ 响应式：平板/手机 ════════ */
@media (max-width: 900px) {
  .topbar { min-height: auto; padding: 14px 16px; }
  .top-actions a { min-width: auto; padding: 9px 12px; font-size: 13px; }
  .hero {
    min-height: 720px;
    height: 100svh;
    justify-content: center;
    align-items: center;
    background-image: url("https://img.fxegames.com/fxegames/sgm/2ndanniversary/bg03.jpg");
    background-position: center top;
    background-size: cover;
  }
  .hero::after {
    background:
      linear-gradient(180deg, rgba(12, 10, 8, .08), transparent 28%),
      linear-gradient(0deg, rgba(12, 10, 8, .66), transparent 42%);
  }
  .hero-copy {
    position: absolute;
    top: 35.5%;
    left: 0;
    right: 0;
    width: 100%;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transform: none;
  }
  .hero-slogan {
    width: min(96.8vw, 715px);
    margin: 0 calc(50% - min(48.4vw, 357.5px) - 10px) 0 calc(50% - min(48.4vw, 357.5px) + 10px);
    filter: drop-shadow(0 6px 12px rgba(86, 25, 11, .22));
  }
  .hero-effects::before {
    height: 36%;
    opacity: .55;
  }
  .hero-cursor-glow {
    display: none;
  }
  .ember {
    animation-duration: calc(var(--dur) * 1.08);
  }
  .hero-date {
    flex-direction: row;
    justify-content: center;
    align-items: center;
    width: min(96.8vw, 715px);
    gap: 9px;
    margin: -12px 0 22px;
  }
  .hero-date span { white-space: nowrap; }
  .enter-button {
    transform: scale(1.1);
    transform-origin: center top;
    margin-left: 0;
    margin-right: 0;
  }
  .scroll-mark {
    display: none;
    margin-top: 12px;
    font-size: 9px;
    letter-spacing: 3px;
  }
  .event-nav {
    display: flex;
    min-height: 74px;
    overflow-x: auto;
    overflow-y: hidden;
    overscroll-behavior-x: contain;
    scroll-snap-type: x proximity;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .event-nav::-webkit-scrollbar { display: none; }
  .event-nav a {
    flex: 0 0 138px;
    min-width: 138px;
    min-height: 74px;
    gap: 8px;
    padding: 10px 12px;
    scroll-snap-align: center;
  }
  .event-nav em { font-size: 22px; }
  .event-nav span {
    font-size: 12px;
    line-height: 1.45;
    letter-spacing: 1px;
    white-space: nowrap;
  }
  .event-nav .back-top {
    flex-basis: 112px;
    min-width: 112px;
  }
  .events { width: min(100% - 24px, 680px); padding: 70px 0 90px; }
  .section-heading { margin-bottom: 42px; }
  .event-card, .event-card.reverse {
    height: auto; min-height: 0; margin-bottom: 54px;
  }
  .event-visual, .event-card.reverse .event-visual {
    position: relative; width: 100%; height: 230px; left: auto; right: auto;
    -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 65%, transparent 100%);
    mask-image: linear-gradient(180deg, #000 0%, #000 65%, transparent 100%);
  }
  .event-content {
    position: relative;
    inset: auto;
    display: block;
    overflow: visible;
  }
  .event-heading, .event-scroll,
  .event-card.reverse .event-heading,
  .event-card.reverse .event-scroll {
    padding: 0 22px 22px;
  }
  .event-heading { margin-top: -42px; position: relative; }
  .event-index { letter-spacing: 4px; }
  .event-content h3 {
    max-width: 100%;
    margin: 8px 0 12px;
    padding: 6px 0 8px;
    font-family: "Ma Shan Zheng", "Noto Serif SC", "Songti SC", serif;
    font-size: clamp(25px, 7.1vw, 32px);
    font-weight: 400;
    line-height: 1.45;
    letter-spacing: 1px;
    white-space: nowrap;
    word-break: keep-all;
    overflow-wrap: normal;
    overflow: visible;
  }
  .event-content h3 span { display: inline; }
  .event-content h3 span + span {
    margin-left: .28em;
  }
  .event-theme {
    margin-top: 0;
    line-height: 1.6;
  }
  .event-scroll { overflow: visible; }
  .event-meta, .data-grid p, .reward-row { grid-template-columns: 1fr; }
  .forge-formula {
    flex-wrap: wrap;
    gap: 9px;
    padding: 12px;
  }
  .formula-result {
    flex-basis: 100%;
    min-width: 0;
  }
}

@media (max-width: 520px) {
  .brand img { width: 150px; }
  .top-actions { gap: 6px; }
  .top-actions a { padding: 8px 9px; font-size: 12px; letter-spacing: 1px; }
  .hero-copy {
    top: 35.5%;
    left: 0;
    right: 0;
    width: 100%;
  }
  .hero-slogan,
  .hero-date {
    width: 96.8vw;
  }
  .hero-slogan {
    margin-left: 10px;
    margin-right: -10px;
  }
  .hero-date {
    font-size: 11px;
    letter-spacing: 1px;
  }
  .hero-date span {
    padding: 6px 8px;
  }
  .enter-button { width: 190px; height: 62px; }
  .enter-button {
    margin-left: 0;
    margin-right: 0;
  }
  .section-heading h2 { letter-spacing: 3px; }
  .event-content h3 {
    font-size: clamp(24px, 6.8vw, 30px);
    letter-spacing: .5px;
  }
  .forge-formula img {
    width: 50px;
    height: 50px;
  }
  .formula-symbol {
    font-size: 16px;
  }
  .formula-result figcaption {
    font-size: 12px;
  }
}

@media (max-width: 360px) {
  .event-heading, .event-scroll,
  .event-card.reverse .event-heading,
  .event-card.reverse .event-scroll {
    padding-left: 18px;
    padding-right: 18px;
  }
  .event-nav a {
    flex-basis: 130px;
    min-width: 130px;
  }
  .event-content h3 {
    font-size: 24px;
    letter-spacing: 0;
  }
}

/* ── 无障碍：减少动画 ── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, ::before, ::after { animation: none !important; transition: none !important; }
  .hero-effects,
  .hero-cursor-glow { display: none; }
}