/* OPPO Sans 4.0 — Copyright 2024 Guangdong OPPO Mobile Telecommunications Corp., Ltd.
   使用未修改的官方可变字体；授权原文随字体放在 assets/fonts/。
   不做子集、不改写字体文件，遵守 OPPO Sans Fonts License Agreement。 */
@font-face {
  font-family: 'OPPO Sans';
  src: url('fonts/OPPO-Sans-4.0.ttf') format('truetype');
  font-style: normal;
  font-weight: 100 700;
  font-display: swap;
}

/* ============================================================
   极采 · 首页 + 后台共用样式
   深空底 + 蓝金光。配色直接取自 LOGO：亮蓝 #1278ff、深蓝 #164c96、
   金 #fead15。
   首页底图是实拍银河照片（assets/bg-galaxy.jpg，已离线润色）；
   后台仍用下面这套代码光斑，不加载照片。
   ============================================================ */

:root {
  --bg:        #05070d;
  --bg-2:      #080c16;
  --ink:       #eef3fb;
  --ink-2:     rgba(226, 235, 250, .66);
  --ink-3:     rgba(214, 226, 246, .44);
  --ink-4:     rgba(206, 220, 244, .28);
  --blue:      #1278ff;
  --blue-deep: #164c96;
  --gold:      #fead15;
  --gold-2:    #ffc558;
  --line:      rgba(150, 185, 255, .12);
  --line-2:    rgba(160, 195, 255, .22);
  --sans: 'OPPO Sans', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB',
          'Microsoft YaHei', 'Source Han Sans SC', 'Noto Sans SC', system-ui, sans-serif;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-height: 100vh;
}

::selection { background: rgba(18, 120, 255, .34); color: #fff; }

/* ---------------- 背景层：代码光斑（仅后台用）/ 底图 / 星点 ---------------- */
.bg-nebula {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.bg-nebula i {
  position: absolute;
  display: block;
  border-radius: 50%;
  will-change: transform;
}
.bg-nebula .n1 {
  width: 78vw; height: 78vw; left: -22vw; top: 2vh;
  background: radial-gradient(circle at 50% 50%, rgba(18, 120, 255, .22), rgba(18, 120, 255, .05) 42%, transparent 66%);
}
.bg-nebula .n2 {
  width: 52vw; height: 52vw; right: -10vw; top: 26vh;
  background: radial-gradient(circle at 50% 50%, rgba(254, 173, 21, .15), transparent 62%);
}
.bg-nebula .n3 {
  width: 96vw; height: 64vw; left: 10vw; bottom: -26vh;
  background: radial-gradient(circle at 50% 50%, rgba(72, 48, 190, .20), transparent 66%);
}
.bg-nebula .n4 {
  width: 40vw; height: 40vw; left: 44vw; top: -12vh;
  background: radial-gradient(circle at 50% 50%, rgba(120, 190, 255, .12), transparent 64%);
}

/* ---- 首页底图：实拍银河 ----
   照片已离线润色（去地景、中值差分收敛星点、压高光、底部渐隐到页面底色），
   这里只负责铺图与压暗，不再用代码叠第二层银河——两套纹理叠在一起就是「脏」。
   压暗罩沿纵向变化：顶部最暗（顶栏要读）、中部稍松（让银河露出来）、
   底部收到接近实色（页脚与下一屏衔接）。 */
.bg-photo {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-color: var(--bg);
  background-image:
    linear-gradient(180deg,
      rgba(5, 7, 13, .58) 0%,
      rgba(5, 7, 13, .26) 26%,
      rgba(5, 7, 13, .34) 62%,
      rgba(5, 7, 13, .88) 100%),
    url("bg-galaxy.jpg");
  background-size: cover;
  background-position: center 46%;
  background-repeat: no-repeat;
}

/* 细网格：科技感来自「有秩序」，不是来自「多」。所以压到几乎看不见，
   再用径向遮罩让它只在视觉中心附近显形。 */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(150, 190, 255, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(150, 190, 255, .055) 1px, transparent 1px);
  background-size: 66px 66px;
  -webkit-mask-image: radial-gradient(ellipse 78% 58% at 50% 42%, #000 12%, transparent 72%);
  mask-image: radial-gradient(ellipse 78% 58% at 50% 42%, #000 12%, transparent 72%);
}

#stars {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  width: 100%;
  height: 100%;
}

/* 顶部与底部压暗，避免星点在文字前后抢注意力 */
.bg-vignette {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 100% 70% at 50% 40%, transparent 40%, rgba(3, 5, 10, .5) 100%),
    linear-gradient(180deg, rgba(3, 5, 10, .55), transparent 22%, transparent 76%, rgba(3, 5, 10, .7));
}

/* ---------------- 布局 ---------------- */
.shell {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------------- 顶栏 ---------------- */
.top {
  position: relative;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 0;
}
.firm {
  font-size: 11px;
  letter-spacing: .26em;
  color: var(--ink-3);
  text-indent: .26em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.firm::before {
  content: '';
  display: inline-block;
  width: 5px; height: 5px;
  margin-right: 9px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 8px rgba(254, 173, 21, .8);
  vertical-align: middle;
  animation: pulse 3.2s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { opacity: .45; transform: scale(.85); }
  50%      { opacity: 1;   transform: scale(1.1); }
}

.top-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }

/* ---------------- 按钮 ---------------- */
.btn {
  appearance: none;
  border: 1px solid var(--line-2);
  background: rgba(255, 255, 255, .045);
  color: var(--ink);
  font-family: inherit;
  font-size: 13px;
  letter-spacing: .08em;
  height: 38px;
  padding: 0 20px;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .24s var(--ease), background .24s var(--ease),
              box-shadow .24s var(--ease), transform .24s var(--ease), color .24s;
  -webkit-tap-highlight-color: transparent;
}
.btn:hover {
  border-color: rgba(254, 173, 21, .5);
  background: rgba(254, 173, 21, .08);
  box-shadow: 0 0 0 1px rgba(254, 173, 21, .12), 0 6px 24px rgba(254, 173, 21, .1);
  color: #fff;
}
.btn:active { transform: translateY(1px); }
.btn-sm { height: 33px; padding: 0 16px; font-size: 12px; }

.btn-solid {
  border-color: transparent;
  background: linear-gradient(180deg, rgba(255, 255, 255, .16), rgba(255, 255, 255, .07));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .22), 0 8px 26px rgba(0, 0, 0, .3);
}
.btn-solid:hover {
  border-color: rgba(254, 173, 21, .5);
  background: linear-gradient(180deg, rgba(254, 173, 21, .2), rgba(254, 173, 21, .08));
}

.btn-ghost {
  border-color: transparent;
  background: transparent;
  color: var(--ink-2);
  padding: 0 12px;
}
.btn-ghost:hover {
  color: #fff;
  border-color: transparent;
  background: transparent;
  box-shadow: none;
}

/* ---------------- 英雄区 ---------------- */
.hero {
  position: relative;
  min-height: calc(100svh - 78px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4vh 0 10vh;
}

.hero-logo {
  position: relative;
  display: block;
  height: clamp(84px, 15vh, 146px);
  width: auto;
  filter: drop-shadow(0 10px 40px rgba(18, 120, 255, .34))
          drop-shadow(0 0 18px rgba(254, 173, 21, .16));
  animation: float 7s ease-in-out infinite;
}
/* LOGO 身后的光斑：让深空底与图形之间有一层过渡，不然图形像贴上去的 */
.hero-logo-glow {
  position: absolute;
  width: clamp(230px, 46vw, 420px);
  height: clamp(230px, 46vw, 420px);
  left: 50%; top: 8%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(18, 120, 255, .2), rgba(18, 120, 255, .06) 46%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-9px); }
}

.wordmark {
  margin-top: clamp(18px, 3vh, 30px);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .46em;
  text-indent: .46em;
  color: var(--ink-3);
  display: flex;
  align-items: center;
  gap: 14px;
}
.wordmark::before,
.wordmark::after {
  content: '';
  width: 26px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(160, 195, 255, .38), transparent);
}

.slogan {
  margin-top: clamp(14px, 2.4vh, 22px);
  font-size: clamp(1.9rem, 3.35vw, 3rem);
  font-weight: 600;
  line-height: 1.52;
  letter-spacing: .035em;
  white-space: nowrap;
}
/* 单行兜底：整句一条渐变 */
.slogan > span {
  display: inline;
  background: linear-gradient(178deg, #ffffff 24%, #cddcf6 78%, #a9bede 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 60px rgba(150, 200, 255, .18);
}
.slogan .brk { display: none; }

/* 多行版：三行同字号、同字重，仅靠色彩区分连接语与重点。 */
.slogan.multi { white-space: normal; }
.slogan.multi .ln {
  display: block;
  font-size: inherit;
  font-weight: inherit;
}
.slogan.multi .ln-2 {
  margin: 0;
  letter-spacing: .035em;
  background: linear-gradient(178deg, #d6e1f3 4%, #8fa4c6 96%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: none;
}
.slogan.multi .ln-3 {
  background: linear-gradient(178deg, #ffffff 28%, #e8f0fc 70%, #cddef4 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow:
    0 0 24px rgba(254, 173, 21, .26),
    0 0 58px rgba(18, 120, 255, .22);
}

.hero-intro {
  margin-top: clamp(18px, 2.6vh, 26px);
  max-width: 32em;
  font-size: 14px;
  line-height: 1.95;
  color: var(--ink-2);
  letter-spacing: .02em;
  text-wrap: pretty;
}

.hero-actions {
  margin-top: clamp(26px, 4vh, 40px);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

/* 向下滚的提示：一条细线走光 */
.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  width: 1px;
  height: 46px;
  background: linear-gradient(180deg, transparent, rgba(160, 195, 255, .42), transparent);
  overflow: hidden;
  opacity: .8;
}
.scroll-hint::after {
  content: '';
  position: absolute;
  left: 0; top: -46px;
  width: 1px; height: 46px;
  background: linear-gradient(180deg, transparent, var(--gold), transparent);
  animation: drip 2.6s var(--ease) infinite;
}
@keyframes drip {
  0%   { top: -46px; }
  70%, 100% { top: 46px; }
}

/* ---------------- 区块标题 ---------------- */
.sect { padding: clamp(48px, 8vh, 96px) 0 0; }
.sect-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 26px;
}
.sect-head .k {
  font-size: 11px;
  letter-spacing: .3em;
  text-indent: .3em;
  color: var(--ink-3);
  white-space: nowrap;
}
.sect-head .rule {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--line-2), transparent);
}

/* ---------------- 产品卡 ---------------- */
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 196px;
  padding: 26px 26px 20px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background:
    linear-gradient(158deg, rgba(255, 255, 255, .062), rgba(255, 255, 255, .014) 62%);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
/* 卡片右上角的一束光，hover 时才会往前推一点 */
.card::after {
  content: '';
  position: absolute;
  right: -40px; top: -60px;
  width: 190px; height: 190px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(18, 120, 255, .2), transparent 66%);
  opacity: .5;
  pointer-events: none;
  transition: opacity .35s var(--ease), transform .5s var(--ease);
}
.card:hover {
  transform: translateY(-3px);
  border-color: rgba(254, 173, 21, .38);
  box-shadow: 0 18px 46px rgba(0, 0, 0, .46), 0 0 0 1px rgba(254, 173, 21, .08);
}
.card:hover::after { opacity: .95; transform: scale(1.14); }
.card:active { transform: translateY(-1px); }

.card-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.card-no {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  opacity: .92;
}
.card-status {
  margin-left: auto;
  font-size: 10.5px;
  letter-spacing: .12em;
  color: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 2px 9px;
}
.card-status.live {
  color: rgba(126, 232, 178, .92);
  border-color: rgba(96, 220, 160, .3);
  background: rgba(60, 200, 140, .07);
}

.card h3 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: .02em;
  color: #fff;
  margin-bottom: 10px;
}
.card p {
  font-size: 13px;
  line-height: 1.85;
  color: var(--ink-2);
  flex: 1;
  text-wrap: pretty;
}
.card-foot {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--ink-3);
}
.card-foot .host { font-variant-numeric: tabular-nums; }
.card-foot .arrow {
  margin-left: auto;
  width: 15px; height: 15px;
  flex: none;
  color: var(--ink-3);
  transition: transform .3s var(--ease), color .3s var(--ease);
}
.card:hover .card-foot .arrow { transform: translateX(4px); color: var(--gold); }

/* ---------------- 联系区 ---------------- */
.contact-band {
  margin-top: clamp(56px, 9vh, 104px);
  padding: clamp(30px, 5vh, 46px) clamp(24px, 4vw, 44px);
  border-radius: 20px;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(18, 120, 255, .1), rgba(255, 255, 255, .02) 46%, rgba(254, 173, 21, .06));
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.contact-band h2 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: .04em;
  color: #fff;
}
.contact-band .sub {
  margin-top: 8px;
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.85;
}
.contact-lines {
  margin-left: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--ink-2);
}
.contact-lines a {
  color: var(--ink-2);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s, border-color .2s;
  font-variant-numeric: tabular-nums;
}
.contact-lines a:hover { color: #fff; border-bottom-color: rgba(254, 173, 21, .5); }
.contact-lines .lb {
  display: inline-block;
  width: 3.2em;
  color: var(--ink-4);
  font-size: 11.5px;
  letter-spacing: .16em;
}

/* ---------------- 页脚 ---------------- */
.foot {
  position: relative;
  z-index: 1;
  margin-top: clamp(56px, 9vh, 92px);
  padding: 26px 0 34px;
  border-top: 1px solid var(--line);
}
.foot-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  font-size: 11.5px;
  color: var(--ink-4);
  letter-spacing: .04em;
}
.foot-inner a {
  color: var(--ink-4);
  text-decoration: none;
  transition: color .2s;
}
.foot-inner a:hover { color: var(--ink-2); }
.foot .dot { opacity: .45; }

/* ---------------- 联系面板 ---------------- */
.sheet-mask {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(2, 4, 10, .74);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s var(--ease);
}
.sheet-mask.on { opacity: 1; pointer-events: auto; }

.sheet {
  position: fixed;
  z-index: 91;
  left: 50%;
  top: 50%;
  width: min(520px, calc(100vw - 40px));
  max-height: min(86vh, 720px);
  overflow-y: auto;
  transform: translate(-50%, -46%) scale(.97);
  opacity: 0;
  pointer-events: none;
  border-radius: 20px;
  border: 1px solid var(--line-2);
  background: linear-gradient(168deg, #0d1526, #080d18 70%);
  box-shadow: 0 30px 90px rgba(0, 0, 0, .7), inset 0 1px 0 rgba(255, 255, 255, .07);
  transition: opacity .3s var(--ease), transform .34s var(--ease);
}
.sheet.on {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}

.sheet-head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 24px 24px 0;
}
.sheet-head h2 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .04em;
  color: #fff;
}
.sheet-head p {
  margin-top: 6px;
  font-size: 12.5px;
  color: var(--ink-3);
  line-height: 1.8;
}
.sheet-close {
  margin-left: auto;
  width: 32px; height: 32px;
  flex: none;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-3);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: color .2s, border-color .2s, background .2s;
}
.sheet-close:hover { color: #fff; border-color: var(--line-2); background: rgba(255, 255, 255, .06); }

.sheet-body { padding: 20px 24px 24px; }

.ways {
  display: flex;
  flex-direction: column;
  gap: 1px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--line);
}
.way {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 15px;
  background: #0b1120;
  text-decoration: none;
  color: inherit;
  transition: background .2s;
}
.way:hover { background: #101a2e; }
.way .icon {
  width: 30px; height: 30px;
  flex: none;
  border-radius: 9px;
  display: grid;
  place-items: center;
  background: rgba(18, 120, 255, .13);
  color: #6faaff;
}
.way.gold .icon { background: rgba(254, 173, 21, .13); color: var(--gold); }
.way .txt { min-width: 0; }
.way .t1 { font-size: 12.5px; color: var(--ink-3); letter-spacing: .1em; }
.way .t2 {
  font-size: 14px;
  color: #fff;
  letter-spacing: .02em;
  font-variant-numeric: tabular-nums;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.divider-or {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 22px 0 18px;
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--ink-4);
}
.divider-or::before, .divider-or::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--line);
}

.field { margin-bottom: 16px; }
.field-label {
  display: block;
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--ink-3);
  margin-bottom: 7px;
}
.field-label .opt { color: var(--ink-4); letter-spacing: .06em; }
.field input,
.field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, .035);
  color: var(--ink);
  font-family: inherit;
  font-size: 14px;
  padding: 10px 13px;
  outline: none;
  transition: border-color .2s, background .2s, box-shadow .2s;
  resize: vertical;
}
.field textarea { min-height: 96px; line-height: 1.75; }
.field input::placeholder,
.field textarea::placeholder { color: var(--ink-4); }
.field input:focus,
.field textarea:focus {
  border-color: rgba(254, 173, 21, .5);
  background: rgba(255, 255, 255, .055);
  box-shadow: 0 0 0 3px rgba(254, 173, 21, .09);
}

/* 给机器人看的蜜罐：真人在页面上看不见，填了就不是人 */
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.submit-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
}
.submit-row .btn { flex: 1; height: 42px; }
.form-note {
  margin-top: 12px;
  font-size: 11.5px;
  line-height: 1.75;
  color: var(--ink-4);
  letter-spacing: .02em;
}
.form-msg {
  margin-top: 14px;
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: .02em;
  min-height: 1.7em;
}
.form-msg.err { color: #ff9a8e; }
.form-msg.ok { color: #7ee8b2; }

/* 提交成功后，整块表单换成一句确认 */
.sent {
  padding: 26px 8px 10px;
  text-align: center;
}
.sent .glyph {
  width: 46px; height: 46px;
  margin: 0 auto 16px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(96, 220, 160, .12);
  color: #7ee8b2;
  border: 1px solid rgba(96, 220, 160, .3);
}
.sent h3 { font-size: 16px; color: #fff; margin-bottom: 8px; }
.sent p { font-size: 13px; color: var(--ink-2); line-height: 1.85; }

/* 公告条：后台可以写一句话，首页就顶一条细线通知 */
.notice {
  display: none;
  align-items: center;
  gap: 10px;
  margin: 4px 0 0;
  padding: 9px 14px;
  border-radius: 10px;
  border: 1px solid rgba(254, 173, 21, .26);
  background: rgba(254, 173, 21, .07);
  font-size: 12.5px;
  color: rgba(255, 220, 160, .95);
  letter-spacing: .02em;
}
.notice.on { display: flex; }
.notice::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gold);
  flex: none;
}

/* ---------------- 手机 ---------------- */
@media (max-width: 860px) {
  /* 竖屏 cover 会裁掉两侧。银河核心在原图 59.7% 处，
     按 390x844 反算 position ≈ 63%，让手机正对银河而不是旁边那片空天。 */
  .bg-photo { background-position: 63% center; }

  .shell { padding: 0 20px; }
  .top { padding: 16px 0; }
  .firm { font-size: 10px; letter-spacing: .16em; text-indent: .16em; }
  .firm::before { margin-right: 7px; }

  .hero { min-height: calc(100svh - 66px); padding: 2vh 0 8vh; }
  .hero-logo { height: clamp(76px, 12vh, 104px); }
  .wordmark { font-size: 10px; letter-spacing: .38em; text-indent: .38em; }
  .wordmark::before, .wordmark::after { width: 18px; }

  .slogan {
    font-size: clamp(1.44rem, 7.1vw, 1.95rem);
    white-space: normal;
    line-height: 1.48;
    letter-spacing: .02em;
  }
  .slogan.multi { line-height: 1.52; }
  .slogan .brk { display: block; }

  .hero-intro { font-size: 13px; line-height: 1.9; }
  .hero-actions { margin-top: 26px; gap: 8px; }
  .hero-actions .btn { height: 40px; padding: 0 22px; }

  .scroll-hint { display: none; }

  .cards { grid-template-columns: 1fr; gap: 12px; }
  .card { min-height: 0; padding: 22px 20px 18px; border-radius: 14px; }

  .contact-band {
    flex-direction: column;
    align-items: stretch;
    gap: 18px;
    padding: 24px 20px;
    border-radius: 16px;
  }
  .contact-band h2 { font-size: 18px; }
  .contact-lines { margin-left: 0; }

  .foot { padding: 22px 0 calc(26px + env(safe-area-inset-bottom)); }

  /* 手机上不用居中弹窗，改成从底部升起的面板，拇指够得着 */
  .sheet {
    left: 0;
    top: auto;
    bottom: 0;
    width: 100%;
    max-height: 90svh;
    transform: translate(0, 100%);
    border-radius: 20px 20px 0 0;
    border-bottom: 0;
  }
  .sheet.on { transform: translate(0, 0); }
  .sheet-body { padding: 18px 20px calc(24px + env(safe-area-inset-bottom)); }

  .field input, .field textarea { font-size: 16px; } /* 小于 16px 时 iOS 会自动放大页面 */
}

@media (max-width: 380px) {
  .slogan { font-size: 1.34rem; }
  .firm { letter-spacing: .1em; }
}

/* 尊重系统的「减少动态效果」 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}