/* IASIA88 — 三栏门面（三扇地区门 hero→门内容段→季节带→叙述→FAQ→信任）
   节庆红黑 #200B10 / 灯笼金 #FFAE1F · Staatliches + Sarabun · 老虎机母题贯穿 */

:root {
  --ia-bg: #200B10;
  --ia-panel: #2E1016;
  --ia-panel2: #3A151C;
  --ia-gold: #FFAE1F;
  --ia-gold2: #FFD57A;
  --ia-ember: #E8543F;
  --ia-ink: #F7EAD8;
  --ia-mut: #C9A29A;
  --ia-line: rgba(255, 174, 31, .3);
  --ia-glow: 0 0 14px rgba(255, 174, 31, .5);
  --ia-fdisp: 'Staatliches', 'Arial Narrow', sans-serif;
  --ia-fbody: 'Sarabun', 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: radial-gradient(1100px 500px at 50% -140px, #48202A 0%, var(--ia-bg) 62%);
  color: var(--ia-ink);
  font-family: var(--ia-fbody);
  font-size: 17px;
  line-height: 1.75;
  overflow-wrap: break-word;
}

h1, h2, h3, .ia-logo-word, .ia-lintel b, .ia-stopname, .ia-kicker {
  font-family: var(--ia-fdisp);
  font-weight: 400;
  letter-spacing: .04em;
}

h1 { font-size: clamp(1.9rem, 4vw, 3rem); line-height: 1.15; color: var(--ia-gold2); margin: .4em 0; text-shadow: var(--ia-glow); }
h2 { font-size: clamp(1.45rem, 2.6vw, 2.1rem); color: var(--ia-gold); margin: 1.1em 0 .5em; }
h3 { font-size: 1.15rem; color: var(--ia-gold2); margin: 1em 0 .35em; }

a { color: var(--ia-gold2); text-decoration: none; }
a:hover { text-decoration: underline; text-decoration-color: var(--ia-gold); }
p { margin: .7em 0; }

img { max-width: 100%; height: auto; display: block; }

/* ============ 顶部：门楣横梁 ============ */

.ia-head {
  position: sticky;
  top: 0;
  z-index: 50;
  background: linear-gradient(180deg, #2A0E14 0%, #230C11 100%);
  border-bottom: 2px solid var(--ia-line);
  box-shadow: 0 6px 24px rgba(0, 0, 0, .55);
}

.ia-headin {
  max-width: 1240px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 22px;
}

.ia-logo { display: flex; align-items: center; gap: 10px; }

.ia-logo-lamp {
  display: inline-flex;
  gap: 2px;
  padding: 5px 8px;
  border: 1px solid var(--ia-gold);
  border-radius: 10px 10px 14px 14px;
  background: linear-gradient(180deg, #3A151C, #200B10);
  box-shadow: var(--ia-glow);
}

.ia-logo-lamp i { font-style: normal; font-size: .78rem; line-height: 1; }

.ia-logo-word { font-size: 1.5rem; color: var(--ia-gold); letter-spacing: .08em; text-shadow: var(--ia-glow); }

.ia-nav { margin-left: auto; display: flex; gap: 4px; }
.ia-nav a { padding: 8px 13px; border-radius: 8px; color: var(--ia-ink); font-size: .98rem; }
.ia-nav a:hover { background: rgba(255, 174, 31, .12); text-decoration: none; }
.ia-nav a.on { color: var(--ia-gold); box-shadow: inset 0 -2px 0 var(--ia-gold); }

.ia-hact { display: flex; gap: 10px; }

.ia-btn {
  display: inline-block;
  padding: 9px 20px;
  border-radius: 999px;
  font-weight: 700;
  font-size: .95rem;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease;
}
.ia-btn:hover { text-decoration: none; transform: translateY(-1px); }

.ia-btn-main {
  background: linear-gradient(180deg, var(--ia-gold2), var(--ia-gold));
  color: #2A0E14;
  box-shadow: 0 0 18px rgba(255, 174, 31, .45);
}
.ia-btn-ghost { border: 1px solid var(--ia-gold); color: var(--ia-gold2); }

/* 汉堡（checkbox 必须保持为 header 直接子元素） */
.ia-burger { display: none; margin-left: auto; cursor: pointer; padding: 6px; }
.ia-burger span { display: block; width: 24px; height: 3px; margin: 4px 0; background: var(--ia-gold); border-radius: 2px; }
.ia-navtog { display: none; }

.ia-mnav {
  display: none;
  padding: 8px 20px 18px;
  background: #230C11;
  border-bottom: 2px solid var(--ia-line);
}
.ia-mgrp h3 { margin: 12px 0 4px; color: var(--ia-gold); font-size: 1rem; }
.ia-mgrp a { display: block; padding: 6px 2px; border-bottom: 1px dashed rgba(255, 174, 31, .18); }

/* ============ 首页：三门广场 hero ============ */

.ia-main { max-width: 1240px; margin: 0 auto; padding: 0 20px 90px; }

.ia-plaza { text-align: center; padding: 54px 0 26px; }

.ia-kicker {
  display: inline-block;
  margin: 0;
  padding: 6px 18px;
  border: 1px solid var(--ia-line);
  border-radius: 999px;
  color: var(--ia-gold);
  background: rgba(255, 174, 31, .07);
  font-size: .95rem;
}

.ia-lede { max-width: 980px; margin: 0 auto 34px; color: var(--ia-mut); }

.ia-gates {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  align-items: stretch;
  text-align: left;
}

/* 门的公共：机柜面板造型（顶部跑马灯珠） */
.ia-gate {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 20px 18px 22px;
  border: 2px solid var(--ia-line);
  border-radius: 14px;
  background:
    radial-gradient(140% 90px at 50% 0%, rgba(255, 174, 31, .16), transparent 70%),
    linear-gradient(180deg, var(--ia-panel2), var(--ia-panel) 55%);
  box-shadow: 0 14px 34px rgba(0, 0, 0, .5), inset 0 0 0 4px rgba(0, 0, 0, .28);
}
.ia-gate::before {
  content: "";
  position: absolute;
  top: 7px; left: 16px; right: 16px;
  height: 8px;
  border-radius: 6px;
  background:
    radial-gradient(circle, var(--ia-gold2) 2.5px, transparent 3.2px) 0 0 / 20px 8px repeat-x,
    linear-gradient(90deg, rgba(255, 174, 31, .15), rgba(232, 84, 63, .35), rgba(255, 174, 31, .15));
  animation: ia-pearlrun 3.2s steps(10) infinite;
}

/* —— 东亚门：牌楼挑檐 + 竖灯笼卷轴窗 —— */
.ia-roofT { position: relative; height: 44px; margin: 6px -6px 4px; }
.ia-rtile { position: absolute; bottom: 0; height: 15px; background: linear-gradient(180deg, #6B2A1F, #46202B); border: 1px solid var(--ia-gold); }
.ia-rtile.r1 { left: 0; right: 0; clip-path: polygon(3% 100%, 50% 0, 97% 100%); }
.ia-rtile.r2 { left: 12%; right: 12%; height: 12px; bottom: 13px; clip-path: polygon(4% 100%, 50% 0, 96% 100%); background: linear-gradient(180deg, #7C3123, #4E2530); }
.ia-rtile.r3 { left: 26%; right: 26%; height: 10px; bottom: 23px; clip-path: polygon(5% 100%, 50% 0, 95% 100%); background: linear-gradient(180deg, #8C3A28, #582B34); }

.ia-win-lantern {
  position: relative;
  width: 92px;
  margin: 16px auto 8px;
  padding: 12px 8px 22px;
  height: 168px;
  overflow: hidden;
  border: 2px solid var(--ia-gold);
  border-radius: 46% 46% 42% 42% / 34% 34% 52% 52%;
  background: linear-gradient(180deg, #4A1B24, #31121A);
  box-shadow: inset 0 0 22px rgba(232, 84, 63, .35), var(--ia-glow);
}
.ia-win-lantern::before { content: ""; position: absolute; top: -2px; left: 50%; translate: -50% 0; width: 34px; height: 8px; background: var(--ia-gold); border-radius: 3px; }
.ia-vreel { margin: 0; padding: 0; list-style: none; display: grid; justify-items: center; gap: 6px; animation: ia-rollup 7s linear infinite; }
.ia-vreel li { font-size: 1.55rem; line-height: 1.2; filter: drop-shadow(0 0 8px rgba(255, 174, 31, .6)); }
.ia-tassel { position: absolute; bottom: 4px; left: 50%; translate: -50% 0; width: 3px; height: 12px; background: var(--ia-gold); border-radius: 2px; }

/* —— 东南亚门：圆拱 + 水纹灯窗 —— */
.ia-roofG { height: 46px; margin: 6px 12px 0; position: relative; }
.ia-arch {
  position: absolute; inset: 0 0 -8px 0;
  border: 2px solid var(--ia-gold);
  border-bottom: none;
  border-radius: 999px 999px 0 0;
  background: linear-gradient(180deg, rgba(255, 174, 31, .12), rgba(32, 11, 16, 0));
}
.ia-win-ripple {
  margin: 12px auto 10px;
  width: min(230px, 100%);
  padding: 16px 12px;
  border: 2px solid var(--ia-line);
  border-radius: 22px;
  overflow: hidden;
  background:
    repeating-radial-gradient(circle at 50% 118%, rgba(255, 174, 31, .16) 0 3px, transparent 3px 13px),
    linear-gradient(180deg, #24303A, #1B222C);
  box-shadow: inset 0 0 24px rgba(62, 152, 204, .18);
}
.ia-hreel { margin: 0; padding: 0; list-style: none; display: flex; justify-content: space-around; }
.ia-hreel li { font-size: 1.7rem; animation: ia-bob 2.6s ease-in-out infinite; filter: drop-shadow(0 4px 10px rgba(62, 152, 204, .5)); }
.ia-hreel li:nth-child(2n) { animation-delay: .9s; }

/* —— 南亚门：尖拱 + 新月灯窗 —— */
.ia-roofS { height: 48px; position: relative; margin: 6px 24px 0; }
.ia-ogee {
  position: absolute; inset: 0 0 -10px 0;
  border: 2px solid var(--ia-gold);
  border-bottom: none;
  border-radius: 50% 50% 0 0 / 78% 78% 0 0;
  background: linear-gradient(180deg, rgba(232, 84, 63, .16), rgba(32, 11, 16, 0));
}
.ia-spire { position: absolute; top: -7px; left: 50%; translate: -50% 0; width: 4px; height: 14px; background: var(--ia-gold); border-radius: 3px; box-shadow: var(--ia-glow); }
.ia-win-crescent {
  position: relative;
  margin: 12px auto 8px;
  width: 176px;
  height: 108px;
  padding: 12px 14px;
  border: 2px solid var(--ia-line);
  border-radius: 18px;
  background: linear-gradient(200deg, #241326, #1A101E);
  overflow: hidden;
}
.ia-moon {
  position: absolute; top: 10px; right: 14px;
  width: 26px; height: 26px; border-radius: 50%;
  box-shadow: 7px -5px 0 0 var(--ia-gold2);
  animation: ia-glim 3s ease-in-out infinite;
}
.ia-sreel { margin: 6px 0 0; display: grid; grid-template-columns: repeat(2, auto); gap: 4px 18px; justify-content: start; }
.ia-sreel dt { font-size: 1.5rem; filter: drop-shadow(0 0 7px rgba(255, 174, 31, .55)); animation: ia-glim 4s ease-in-out infinite; }
.ia-sreel dt:nth-child(2n) { animation-delay: 1.3s; }

.ia-lintel { text-align: center; margin-top: 12px; }
.ia-lintel b { display: block; font-size: 1.35rem; color: var(--ia-gold); letter-spacing: .12em; text-shadow: var(--ia-glow); }
.ia-lintel small { color: var(--ia-mut); }

.ia-gp { color: var(--ia-mut); font-size: .98rem; flex: 1; }

.ia-glinks { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.ia-glinks a {
  padding: 6px 14px;
  border: 1px solid var(--ia-line);
  border-radius: 999px;
  font-size: .9rem;
  background: rgba(255, 174, 31, .06);
}
.ia-glinks a:hover { border-color: var(--ia-gold); text-decoration: none; box-shadow: var(--ia-glow); }

/* ============ 每门内容段（卡片栅格模块） ============ */

.ia-gsec { padding: 26px 0 8px; }
.ia-gsecT { border-left: 3px solid var(--ia-ember); padding-left: 22px; }
.ia-gsecG { border-left: 3px solid #3E98CC; padding-left: 22px; }
.ia-gsecS { border-left: 3px solid var(--ia-gold); padding-left: 22px; }
.ia-gsec > p { color: var(--ia-mut); max-width: 900px; }

.ia-gcards { margin: 18px 0; padding: 0; list-style: none; display: grid; gap: 16px; }
.ia-cards-u, .ia-cards-o { grid-template-columns: repeat(2, 1fr); }
.ia-cards-o { counter-reset: ia-gate; }

.ia-gcard {
  padding: 18px 20px;
  border: 1px solid var(--ia-line);
  border-radius: 12px;
  background: linear-gradient(180deg, var(--ia-panel2), var(--ia-panel));
  position: relative;
}
.ia-gcard h3 { margin: 0 0 6px; }
.ia-gcard p { color: var(--ia-mut); font-size: .96rem; margin: 0 0 10px; }
.ia-cardmore { font-size: .9rem; font-weight: 600; }

.ia-cards-o .ia-gcard { counter-increment: ia-gate; padding-left: 52px; }
.ia-cards-o .ia-gcard::before {
  content: counter(ia-gate);
  position: absolute; left: 14px; top: 16px;
  width: 26px; height: 26px;
  display: grid; place-items: center;
  border-radius: 50%;
  border: 1px solid var(--ia-gold);
  color: var(--ia-gold);
  font-family: var(--ia-fdisp);
}

.ia-cards-d { display: grid; gap: 12px; }
.ia-drow { display: grid; grid-template-columns: 300px 1fr; gap: 18px; padding: 14px 18px; border: 1px solid var(--ia-line); border-radius: 12px; background: var(--ia-panel); }
.ia-drow dt { font-family: var(--ia-fdisp); font-size: 1.1rem; letter-spacing: .03em; }
.ia-drow dd { margin: 0; color: var(--ia-mut); font-size: .96rem; }

/* ============ 通栏季节带（卷轴滚轮） ============ */

.ia-seasonband { margin-top: 34px; padding: 28px 0 10px; border-top: 2px dashed var(--ia-line); }
.ia-bandp { color: var(--ia-mut); max-width: 860px; }

.ia-reelwrap {
  position: relative;
  margin: 22px -20px 8px;
  padding: 26px 0 30px;
  overflow: hidden;
  border-block: 2px solid var(--ia-line);
  background:
    radial-gradient(90% 140% at 50% 50%, rgba(255, 174, 31, .07), transparent 70%),
    linear-gradient(180deg, #2A0E14, #1E0A0F);
}

.ia-reeltrack {
  display: flex;
  gap: 18px;
  width: max-content;
  padding: 0 20px;
  animation: ia-spin 30s linear infinite;
}
.ia-reelwrap:hover .ia-reeltrack, .ia-reelwrap:focus-within .ia-reeltrack { animation-play-state: paused; }

.ia-stop {
  position: relative;
  width: 218px;
  flex: 0 0 auto;
  padding: 14px 16px 16px;
  border: 2px solid var(--ia-line);
  border-radius: 12px;
  background: linear-gradient(180deg, var(--ia-panel2), #261018);
  color: var(--ia-ink);
}
.ia-stop:hover { border-color: var(--ia-gold); text-decoration: none; box-shadow: var(--ia-glow); }
.ia-stopname { display: block; font-size: 1.3rem; color: var(--ia-gold); letter-spacing: .1em; }
.ia-stopmon { display: block; color: var(--ia-mut); margin: 2px 0 6px; }
.ia-stopd { display: block; font-size: .92rem; }
.ia-stopsym { position: absolute; top: -13px; right: 12px; font-size: 1.25rem; filter: drop-shadow(0 0 8px rgba(255, 174, 31, .7)); }

.ia-payline {
  position: absolute;
  left: 0; right: 0; top: 50%;
  height: 0;
  border-top: 3px dashed rgba(255, 213, 122, .5);
  pointer-events: none;
}

/* ============ 叙述 + 优势 ============ */

.ia-tell { padding-top: 30px; }
.ia-tell > p { color: var(--ia-mut); max-width: 920px; }

.ia-plazafig { margin: 26px 0; }
.ia-plazafig img { border-radius: 14px; border: 1px solid var(--ia-line); box-shadow: 0 18px 40px rgba(0, 0, 0, .5); }
.ia-plazafig figcaption { color: var(--ia-mut); font-size: .88rem; margin-top: 8px; }

.ia-advh { margin-top: 30px; }
.ia-advs { margin: 14px 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; counter-reset: ia-adv; }
.ia-advs li {
  position: relative;
  padding: 16px 18px 16px 54px;
  border: 1px solid var(--ia-line);
  border-radius: 12px;
  background: var(--ia-panel);
  counter-increment: ia-adv;
}
.ia-advs li::before {
  content: counter(ia-adv);
  position: absolute; left: 14px; top: 16px;
  width: 28px; height: 28px;
  display: grid; place-items: center;
  border-radius: 8px;
  background: linear-gradient(180deg, var(--ia-gold2), var(--ia-gold));
  color: #2A0E14;
  font-family: var(--ia-fdisp);
}
.ia-advs h3 { margin: 0 0 4px; }
.ia-advs p { margin: 0; color: var(--ia-mut); font-size: .95rem; }

/* ============ FAQ / 信任 ============ */

.ia-faqsec { padding-top: 26px; border-top: 2px dashed var(--ia-line); margin-top: 26px; }
.ia-q { border: 1px solid var(--ia-line); border-radius: 10px; background: var(--ia-panel); margin: 10px 0; }
.ia-q summary { cursor: pointer; padding: 13px 18px; font-weight: 600; color: var(--ia-gold2); list-style-position: inside; }
.ia-q[open] summary { border-bottom: 1px dashed rgba(255, 174, 31, .2); }
.ia-q p { padding: 4px 18px 12px; color: var(--ia-mut); margin: 0; }

.ia-trust {
  margin-top: 30px;
  padding: 24px 26px;
  border: 2px solid var(--ia-gold);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(255, 174, 31, .1), rgba(255, 174, 31, .03));
}
.ia-trust h2 { margin-top: 0; }
.ia-trust p { color: var(--ia-ink); }
.ia-trustlnk { display: inline-block; margin-top: 4px; font-weight: 700; }

/* ============ 内页：卷纸 ============ */

.ia-strip {
  display: flex;
  justify-content: space-between;
  padding: 9px 20px;
  max-width: 1240px;
  margin: 0 auto;
  font-size: 1.1rem;
  color: var(--ia-gold);
  background: repeating-linear-gradient(90deg, rgba(255, 174, 31, .12) 0 46px, rgba(232, 84, 63, .14) 46px 92px);
  border-block: 1px solid rgba(255, 174, 31, .22);
}
.ia-strip i { font-style: normal; animation: ia-glim 3.4s ease-in-out infinite; }
.ia-strip i:nth-child(2n) { animation-delay: 1.1s; }

.ia-paper { max-width: 980px; margin: 0 auto; padding: 26px 20px 90px; }

.ia-crumbs { font-size: .9rem; color: var(--ia-mut); margin-bottom: 14px; }

.ia-navintro, .ia-edulead { font-size: 1.12rem; color: var(--ia-ink); border-left: 3px solid var(--ia-gold); padding-left: 16px; }

.ia-steps { margin: 16px 0; padding: 0; list-style: none; display: grid; gap: 14px; }
.ia-steps li { padding: 16px 18px 16px 56px; border: 1px solid var(--ia-line); border-radius: 12px; background: var(--ia-panel); position: relative; counter-increment: ia-step; }
.ia-steps li::before {
  content: counter(ia-step);
  position: absolute; left: 14px; top: 15px;
  width: 30px; height: 30px;
  display: grid; place-items: center;
  border: 1px solid var(--ia-gold);
  border-radius: 50%;
  color: var(--ia-gold);
  font-family: var(--ia-fdisp);
}
.ia-steps h3 { margin: 0 0 4px; }
.ia-steps p { margin: 0; color: var(--ia-mut); }

.ia-navlist { margin: 12px 0 22px; padding: 0 0 0 4px; list-style: none; display: grid; gap: 8px; }
.ia-navlist li { padding: 10px 16px; border-radius: 10px; background: var(--ia-panel); border: 1px solid rgba(255, 174, 31, .18); color: var(--ia-mut); }

.ia-note {
  padding: 14px 18px;
  border: 1px dashed var(--ia-gold);
  border-radius: 10px;
  background: rgba(255, 174, 31, .06);
  color: var(--ia-ink);
}

.ia-fig { margin: 24px 0; }
.ia-fig img { border-radius: 12px; border: 1px solid var(--ia-line); }
.ia-fig figcaption { color: var(--ia-mut); font-size: .9rem; margin-top: 8px; }
.ia-fig-lead img { box-shadow: 0 16px 38px rgba(0, 0, 0, .5); }

.ia-edu > p { color: var(--ia-mut); }

.ia-navaside {
  margin-top: 28px;
  padding: 18px 20px;
  border: 1px solid var(--ia-line);
  border-radius: 12px;
  background: var(--ia-panel);
}
.ia-navaside h3 { margin: 10px 0 6px; }
.ia-navaside h3:first-child { margin-top: 0; }
.ia-navaside a { display: block; padding: 4px 0; }

.ia-resp { margin-top: 22px; font-size: .92rem; color: var(--ia-mut); }

/* ============ 页脚 ============ */

.ia-foot { border-top: 2px solid var(--ia-line); background: #1B080D; }
.ia-fgrid { max-width: 1240px; margin: 0 auto; padding: 36px 20px 18px; display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 26px; }
.ia-fbrand p { color: var(--ia-mut); font-size: .93rem; }
.ia-18 {
  display: inline-block;
  margin-top: 8px;
  padding: 3px 12px;
  border: 2px solid var(--ia-ember);
  border-radius: 8px;
  color: var(--ia-ember);
  font-weight: 800;
}
.ia-fcol h3 { color: var(--ia-gold); margin: 0 0 8px; font-size: 1.05rem; }
.ia-fcol a { display: block; padding: 4px 0; color: var(--ia-mut); font-size: .95rem; }
.ia-fcol a:hover { color: var(--ia-gold2); }
.ia-fbot { border-top: 1px solid rgba(255, 174, 31, .16); padding: 16px 20px 22px; text-align: center; color: var(--ia-mut); font-size: .9rem; }
.ia-fbot p { margin: 4px 0; }

/* ============ 底部悬浮条（唯一外链） ============ */

.ia-float {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 90;
  display: flex;
  justify-content: center;
  padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
  background: linear-gradient(180deg, rgba(27, 8, 13, .82), rgba(27, 8, 13, .97));
  border-top: 1px solid var(--ia-line);
  backdrop-filter: blur(6px);
}
.ia-floatin { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; justify-content: center; }
.ia-tag { color: var(--ia-gold2); font-size: .92rem; }
.ia-blink { animation: ia-flash 1.4s ease-in-out infinite; }
.ia-enter { font-size: 1.02rem; padding: 11px 26px; }

/* ============ 404 ============ */

.ia-404body { display: flex; flex-direction: column; min-height: 100vh; }
.ia-404 { max-width: 720px; margin: auto; text-align: center; padding: 60px 20px 110px; }
.ia-404reels { display: flex; justify-content: center; gap: 14px; font-size: 2.2rem; }
.ia-404reels span { padding: 10px 16px; border: 2px solid var(--ia-line); border-radius: 12px; background: var(--ia-panel); filter: drop-shadow(0 0 10px rgba(255, 174, 31, .5)); }
.ia-404act { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 18px; }

/* ============ 动画 ============ */

@keyframes ia-rollup {
  0% { transform: translateY(0); }
  100% { transform: translateY(-50%); }
}
@keyframes ia-bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@keyframes ia-glim {
  0%, 100% { opacity: 1; }
  50% { opacity: .45; }
}
@keyframes ia-spin {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
@keyframes ia-pearlrun {
  0% { background-position: 0 0, 0 0; }
  100% { background-position: 40px 0, 0 0; }
}
@keyframes ia-flash {
  0%, 100% { opacity: 1; text-shadow: var(--ia-glow); }
  50% { opacity: .55; text-shadow: none; }
}

/* ============ 响应式 ============ */

@media (max-width: 1120px) {
  .ia-nav { display: none; }
  .ia-burger { display: block; }
  .ia-navtog:checked ~ .ia-mnav { display: block; }
  .ia-hact { margin-left: auto; }
}

@media (max-width: 1023px) {
  .ia-gates { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; }
  .ia-cards-u, .ia-cards-o, .ia-advs { grid-template-columns: 1fr; }
  .ia-drow { grid-template-columns: 1fr; gap: 6px; }
  .ia-fgrid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .ia-headin { gap: 12px; padding: 10px 14px; }
  .ia-logo-word { font-size: 1.2rem; }
  .ia-hact .ia-btn-ghost { display: none; }
  .ia-gsec { padding-left: 14px; }
  .ia-fgrid { grid-template-columns: 1fr; gap: 18px; }
  .ia-reelwrap { margin-inline: -14px; }
  .ia-stop { width: 200px; }
  .ia-floatin { gap: 10px; }
  .ia-tag { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .ia-vreel, .ia-hreel li, .ia-reeltrack, .ia-gate::before, .ia-sreel dt, .ia-moon, .ia-strip i, .ia-blink { animation: none; }
}