/* ==========================================================================
   全月科技 QUANYUE TECHNOLOGY
   夜空 · 月光设计系统 / Night & Moon Design System
   零外部依赖 · 纯静态站点
   ========================================================================== */

:root {
  --bg: #070b16;
  --bg-deep: #050810;
  --surface: #0d1526;
  --surface-2: #111c33;
  --line: rgba(242, 236, 221, .09);
  --line-strong: rgba(242, 236, 221, .16);
  --line-gold: rgba(230, 192, 121, .32);
  --text: #f2ecdd;
  --text-mid: #a9b0c3;
  --text-dim: #68708c;
  --gold: #e6c079;
  --gold-hi: #f6e3b0;
  --gold-deep: #a8853f;
  --glow: rgba(230, 192, 121, .35);
  --err: #d98a72;
  --serif: Georgia, "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", Consolas, "Liberation Mono", "Courier New", monospace;
  --nav-h: 76px;
  --wrap: 1200px;
}

/* ---------- 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.7 var(--sans);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
svg { vertical-align: middle; }

::selection { background: var(--gold); color: #141005; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
section[id] { scroll-margin-top: calc(var(--nav-h) + 1rem); }

.mono { font-family: var(--mono); }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 clamp(1.25rem, 4vw, 2.5rem); }

.skip {
  position: fixed; top: -5rem; left: 1rem; z-index: 99;
  background: var(--gold); color: #141005;
  padding: .6rem 1.2rem; font-size: .85rem; transition: top .3s;
}
.skip:focus { top: 1rem; }

/* ---------- 星野背景 ---------- */
#stars { position: fixed; inset: 0; z-index: 0; pointer-events: none; }
.star-layer {
  position: absolute; top: 0; left: 0;
  width: 1px; height: 1px; border-radius: 50%;
  animation: twinkle 7s ease-in-out infinite;
}
@keyframes twinkle { 0%, 100% { opacity: .95; } 50% { opacity: .3; } }

main, .footer { position: relative; z-index: 1; }

/* ---------- 导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  border-bottom: 1px solid transparent;
  transition: background .4s, border-color .4s;
}
.nav.scrolled, html.menu-open .nav {
  background: rgba(7, 11, 22, .86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: var(--nav-h); }
.brand { display: flex; align-items: center; gap: .8rem; }
.brand-mark { width: 30px; height: 30px; }
.brand-txt { display: flex; flex-direction: column; line-height: 1.3; }
.brand-txt b { font: 600 1.18rem var(--serif); letter-spacing: .18em; color: var(--text); }
.brand-txt i { font: 400 .56rem var(--mono); font-style: normal; letter-spacing: .36em; color: var(--text-dim); }

.links { display: flex; gap: 2.6rem; }
.links a {
  position: relative;
  font-size: .92rem; letter-spacing: .22em;
  color: var(--text-mid); padding: .4rem 0;
  transition: color .3s;
}
.links a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  height: 1px; width: 0; background: var(--gold);
  transition: width .35s;
}
.links a:hover { color: var(--text); }
.links a:hover::after { width: 100%; }
.links a.active { color: var(--gold); }
.links a.active::after { width: 100%; }

.nav-toggle { display: none; width: 40px; height: 40px; position: relative; }
.nav-toggle span {
  position: absolute; left: 8px; right: 8px; height: 1.5px;
  background: var(--gold);
  transition: transform .35s, top .35s;
}
.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 24px; }
html.menu-open .nav-toggle span:nth-child(1) { top: 19px; transform: rotate(45deg); }
html.menu-open .nav-toggle span:nth-child(2) { top: 19px; transform: rotate(-45deg); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .7rem;
  padding: .95rem 2.1rem;
  font-size: .92rem; letter-spacing: .18em;
  border: 1px solid transparent;
  transition: background .3s, border-color .3s, box-shadow .3s, color .3s;
  cursor: pointer;
}
.btn .arr { font-family: var(--mono); transition: transform .3s; }
.btn:hover .arr { transform: translateX(5px); }
.btn--gold { background: var(--gold); color: #141005; border-color: var(--gold); }
.btn--gold:hover { background: var(--gold-hi); border-color: var(--gold-hi); box-shadow: 0 8px 34px var(--glow); }
.btn--ghost { color: var(--gold); border-color: var(--line-gold); }
.btn--ghost:hover { border-color: var(--gold); background: rgba(230, 192, 121, .06); }

/* ---------- 章节头 ---------- */
.section { padding: 6.5rem 0; }
.section--tint {
  background: linear-gradient(180deg, rgba(230, 192, 121, .03), transparent 55%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section-head { margin-bottom: 3.2rem; max-width: 760px; }
.kicker {
  display: flex; align-items: center; gap: .9rem;
  font: 600 .7rem var(--mono); letter-spacing: .32em;
  color: var(--gold); text-transform: uppercase;
  margin-bottom: 1.2rem;
}
.kicker::before { content: ""; width: 36px; height: 1px; background: var(--gold); opacity: .6; }
.title { font: 600 clamp(1.9rem, 4vw, 2.9rem)/1.3 var(--serif); letter-spacing: .05em; margin-bottom: 1rem; }
.lead { color: var(--text-mid); font-size: 1rem; line-height: 2; max-width: 60ch; }

/* ---------- 月亮 ---------- */
.moon {
  width: 100%; aspect-ratio: 1; border-radius: 50%; position: relative;
  background:
    radial-gradient(circle at 63% 60%, rgba(122, 88, 40, .5) 0 5%, transparent 6%),
    radial-gradient(circle at 30% 64%, rgba(122, 88, 40, .42) 0 3.4%, transparent 4.4%),
    radial-gradient(circle at 56% 28%, rgba(122, 88, 40, .38) 0 3%, transparent 4%),
    radial-gradient(circle at 38% 42%, rgba(122, 88, 40, .3) 0 2.2%, transparent 3.2%),
    radial-gradient(circle at 70% 38%, rgba(122, 88, 40, .26) 0 1.8%, transparent 2.8%),
    radial-gradient(circle at 35% 30%, #f9eecb, #ecd08d 45%, #d3a75f 72%, #a87d3b 100%);
  box-shadow:
    0 0 60px rgba(233, 199, 124, .4),
    0 0 160px rgba(233, 199, 124, .15),
    0 0 320px rgba(233, 199, 124, .06),
    inset -22px -18px 70px rgba(70, 48, 14, .6),
    inset 10px 8px 30px rgba(255, 246, 214, .22);
  animation: moonFloat 9s ease-in-out infinite alternate;
}
@keyframes moonFloat { from { transform: translateY(-8px); } to { transform: translateY(10px); } }

.orbit { position: absolute; border: 1px dashed rgba(230, 192, 121, .22); border-radius: 50%; }
.orbit--1 { inset: -9%; animation: spin 46s linear infinite; }
.orbit--2 { inset: -20%; border-color: rgba(230, 192, 121, .12); animation: spin 80s linear infinite reverse; }
.orbit-dot {
  position: absolute; top: -3px; left: 50%;
  width: 6px; height: 6px; margin-left: -3px;
  border-radius: 50%; background: var(--gold);
  box-shadow: 0 0 10px var(--glow);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- 首页 Hero ---------- */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; overflow: hidden;
  padding: calc(var(--nav-h) + 3rem) 0 7rem;
}
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 3rem; align-items: center; width: 100%; }
.hero-kicker { font: 600 .72rem var(--mono); letter-spacing: .4em; color: var(--gold); margin-bottom: 1.4rem; }
.hero-title { font: 600 clamp(3.1rem, 8.5vw, 6.4rem)/1.1 var(--serif); letter-spacing: .1em; margin-bottom: 1.5rem; }
.hero-title em { font-style: normal; color: var(--gold); }
.hero-quote { font: 400 clamp(1.02rem, 2vw, 1.3rem)/1.8 var(--serif); letter-spacing: .16em; color: var(--gold-hi); margin-bottom: 1.5rem; }
.hero-desc { color: var(--text-mid); max-width: 46ch; line-height: 2.05; margin-bottom: 2.6rem; }
.cta-row { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero-moon { width: min(40vw, 500px); position: relative; margin-left: auto; }
.moon-label {
  position: absolute; left: 50%; bottom: -3.2rem; transform: translateX(-50%);
  font: 600 .62rem var(--mono); letter-spacing: .4em;
  color: var(--text-dim); white-space: nowrap;
}

.hero-horizon {
  position: absolute; left: 0; right: 0; bottom: 0; height: 60px;
  display: flex; align-items: center; gap: 1.6rem;
  padding: 0 clamp(1.25rem, 4vw, 2.5rem);
  border-top: 1px solid var(--line);
  font: 600 .64rem var(--mono); letter-spacing: .26em; color: var(--text-dim);
}
.hz-line { flex: 1; height: 1px; background: linear-gradient(90deg, var(--line), transparent 20%, transparent 80%, var(--line)); }
.hz-scroll { animation: bounce 2.4s ease-in-out infinite; }
@keyframes bounce { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(4px); } }

/* ---------- 数据条 ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stat { padding: 2.8rem 1rem; text-align: center; position: relative; }
.stat + .stat::before { content: ""; position: absolute; left: 0; top: 22%; bottom: 22%; width: 1px; background: var(--line); }
.stat-num { font: 600 clamp(2.2rem, 4vw, 3rem)/1 var(--mono); color: var(--gold-hi); letter-spacing: .04em; }
.stat-suffix { font-size: 1.15rem; color: var(--gold); margin-left: .2rem; }
.stat-label { margin-top: .8rem; font-size: .78rem; letter-spacing: .4em; color: var(--text-dim); }

/* ---------- 业务卡片 ---------- */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
.card {
  position: relative;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface), rgba(13, 21, 38, .35));
  padding: 2.2rem 1.9rem;
  transition: transform .35s, border-color .35s, box-shadow .35s;
}
.card::before, .card::after { content: ""; position: absolute; width: 14px; height: 14px; opacity: 0; transition: opacity .35s; }
.card::before { top: 9px; left: 9px; border-top: 1px solid var(--gold); border-left: 1px solid var(--gold); }
.card::after { bottom: 9px; right: 9px; border-bottom: 1px solid var(--gold); border-right: 1px solid var(--gold); }
.card:hover { transform: translateY(-6px); border-color: var(--line-gold); box-shadow: 0 18px 50px rgba(0, 0, 0, .45), 0 10px 44px rgba(230, 192, 121, .06); }
.card:hover::before, .card:hover::after { opacity: .9; }

.ph { width: 22px; height: 22px; color: var(--gold); }
.card .ph { width: 30px; height: 30px; margin-bottom: 1.5rem; }
.card-num { font: 600 .66rem var(--mono); letter-spacing: .3em; color: var(--text-dim); margin-bottom: .7rem; }
.card h3 { font: 600 1.32rem var(--serif); letter-spacing: .06em; margin-bottom: .3rem; }
.card-en { font: 600 .62rem var(--mono); letter-spacing: .24em; color: var(--gold-deep); margin-bottom: 1rem; }
.card p { font-size: .92rem; line-height: 1.95; color: var(--text-mid); }

/* ---------- 为什么选择我们 ---------- */
.why-grid { display: grid; grid-template-columns: 5fr 7fr; gap: 4.5rem; align-items: start; }
.why-quote-wrap { position: relative; padding-top: 1rem; }
.why-quote { font: 600 clamp(1.9rem, 4vw, 3.1rem)/1.55 var(--serif); letter-spacing: .08em; color: var(--gold-hi); }
.why-quote-sub { margin-top: 1.6rem; font-size: .95rem; color: var(--text-dim); line-height: 2; }
.why-watermark { position: absolute; top: -3rem; right: -2rem; width: 170px; height: 170px; color: var(--gold); opacity: .07; }
.reasons .reason { display: grid; grid-template-columns: auto 1fr; gap: 1.7rem; padding: 1.9rem 0; border-top: 1px solid var(--line); transition: border-color .35s; }
.reasons .reason:hover { border-top-color: var(--line-gold); }
.reason-num { font: 600 .95rem var(--mono); color: var(--gold); letter-spacing: .2em; padding-top: .4rem; }
.reason h3 { font: 600 1.3rem var(--serif); letter-spacing: .08em; margin-bottom: .55rem; }
.reason p { font-size: .95rem; line-height: 1.95; color: var(--text-mid); }

/* ---------- 合作流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.6rem; }
.step { position: relative; padding-top: 2rem; border-top: 1px solid var(--line); }
.step::before { content: ""; position: absolute; top: -1px; left: 0; width: 38px; height: 1px; background: var(--gold); }
.step-num { font: 600 2.5rem/1 var(--serif); color: transparent; -webkit-text-stroke: 1px rgba(230, 192, 121, .5); margin-bottom: 1.1rem; }
.step h3 { font: 600 1.18rem var(--serif); letter-spacing: .08em; }
.step-en { font: 600 .62rem var(--mono); letter-spacing: .26em; color: var(--text-dim); margin: .35rem 0 .9rem; }
.step p { font-size: .92rem; line-height: 1.9; color: var(--text-mid); }

/* ---------- CTA ---------- */
.cta {
  position: relative; text-align: center; padding: 7.5rem 0; overflow: hidden;
  border-top: 1px solid var(--line);
  background: radial-gradient(ellipse 55% 75% at 50% 118%, rgba(230, 192, 121, .09), transparent 70%);
}
.cta-moon { position: absolute; width: 330px; left: 50%; bottom: -185px; transform: translateX(-50%); opacity: .55; pointer-events: none; }
.cta h2 { font: 600 clamp(2rem, 5vw, 3.2rem)/1.4 var(--serif); letter-spacing: .1em; margin-bottom: 1.2rem; }
.cta p { color: var(--text-mid); margin-bottom: 2.4rem; }

/* ---------- 内页头 ---------- */
.page-hero { padding: calc(var(--nav-h) + 5rem) 0 4.5rem; border-bottom: 1px solid var(--line); position: relative; overflow: hidden; }
.page-hero-grid { display: grid; grid-template-columns: 1fr auto; gap: 3rem; align-items: center; }
.crumb { font: 600 .68rem var(--mono); letter-spacing: .3em; color: var(--text-dim); margin-bottom: 1.3rem; }
.crumb b { color: var(--gold); font-weight: 600; }
.page-hero h1 { font: 600 clamp(2.5rem, 6vw, 4.2rem)/1.2 var(--serif); letter-spacing: .1em; margin-bottom: 1.2rem; }
.page-hero .lead { max-width: 52ch; }
.page-moon { width: min(26vw, 230px); position: relative; }
.page-moon .moon { opacity: .92; }

/* ---------- 关于 · 故事 ---------- */
.story-grid { display: grid; grid-template-columns: 5fr 7fr; gap: 4.5rem; align-items: start; }
.story-lead { position: sticky; top: calc(var(--nav-h) + 3rem); }
.story-body .drop { font: 400 1.5rem/2 var(--serif); color: var(--text); letter-spacing: .04em; margin-bottom: 1.8rem; }
.story-body p { color: var(--text-mid); line-height: 2.1; margin-bottom: 1.4rem; text-align: justify; }
.pull { margin: 2.6rem 0; padding: 2rem 2.2rem; border-left: 2px solid var(--gold); background: linear-gradient(90deg, rgba(230, 192, 121, .05), transparent); }
.pull span { display: block; font: 600 1.4rem/1.8 var(--serif); color: var(--gold-hi); letter-spacing: .08em; }
.pull cite { display: block; margin-top: .9rem; font: 400 .8rem var(--mono); font-style: normal; letter-spacing: .16em; color: var(--text-dim); }

/* ---------- 时间线 ---------- */
.tl { position: relative; max-width: 920px; margin: 0 auto; }
.tl::before {
  content: ""; position: absolute; left: 50%; top: 6px; bottom: 6px; width: 1px;
  background: linear-gradient(180deg, transparent, var(--line-gold) 10%, var(--line-gold) 90%, transparent);
}
.tl-item { display: grid; grid-template-columns: 1fr 76px 1fr; gap: 0 1.6rem; align-items: start; margin-bottom: 3.2rem; }
.tl-node {
  grid-column: 2; grid-row: 1; justify-self: center;
  width: 46px; height: 46px;
  border: 1px solid var(--line-gold); border-radius: 50%;
  display: grid; place-items: center;
  background: var(--bg); position: relative; z-index: 1;
}
.tl-node .ph { width: 22px; height: 22px; }
.tl-year { grid-column: 1; grid-row: 1; justify-self: end; text-align: right; font: 600 1.9rem/1 var(--serif); color: var(--gold); letter-spacing: .06em; margin-top: .2rem; }
.tl-body { grid-column: 3; grid-row: 1; }
.tl-body h3 { font: 600 1.15rem var(--serif); letter-spacing: .08em; margin-bottom: .5rem; }
.tl-body p { font-size: .92rem; line-height: 1.95; color: var(--text-mid); max-width: 38ch; }
.tl-item:nth-child(even) .tl-year { grid-column: 3; grid-row: 1; justify-self: start; text-align: left; }
.tl-item:nth-child(even) .tl-body { grid-column: 1; grid-row: 1; justify-self: end; text-align: right; }
.tl-item:nth-child(even) .tl-body p { text-align: right; }

/* ---------- 价值观 ---------- */
.values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.value { border: 1px solid var(--line); background: var(--surface); padding: 2.4rem 2rem; transition: border-color .35s, transform .35s; }
.value:hover { border-color: var(--line-gold); transform: translateY(-4px); }
.value .ph { width: 28px; height: 28px; margin-bottom: 1.5rem; }
.value h3 { font: 600 1.45rem var(--serif); letter-spacing: .14em; margin-bottom: .35rem; }
.value-en { font: 600 .62rem var(--mono); letter-spacing: .26em; color: var(--gold-deep); margin-bottom: 1.1rem; }
.value p { font-size: .93rem; line-height: 2; color: var(--text-mid); }

/* ---------- 团队 ---------- */
.team { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
.member { border: 1px solid var(--line); background: var(--surface); padding: 2rem 1.8rem; transition: border-color .35s, transform .35s; }
.member:hover { border-color: var(--line-gold); transform: translateY(-4px); }
.member-avatar { width: 62px; height: 62px; border: 1px solid var(--line-gold); border-radius: 50%; display: grid; place-items: center; margin-bottom: 1.4rem; }
.member-avatar .ph { width: 26px; height: 26px; }
.member h3 { font: 600 1.22rem var(--serif); letter-spacing: .1em; }
.member-role { font: 600 .64rem var(--mono); letter-spacing: .22em; color: var(--gold); margin: .4rem 0 1rem; }
.member p { font-size: .88rem; line-height: 1.9; color: var(--text-mid); }
.hire {
  margin-top: 2rem; border: 1px dashed var(--line-gold);
  padding: 2.2rem 2.4rem;
  display: flex; align-items: center; justify-content: space-between;
  gap: 2rem; flex-wrap: wrap;
}
.hire-kicker { font: 600 .66rem var(--mono); letter-spacing: .3em; color: var(--gold); margin-bottom: .7rem; }
.hire p { color: var(--text-mid); font-size: .95rem; }
.hire a { color: var(--gold-hi); border-bottom: 1px solid var(--line-gold); padding-bottom: 2px; transition: border-color .3s; }
.hire a:hover { border-color: var(--gold-hi); }

/* ---------- 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: 5fr 7fr; gap: 2.6rem; align-items: start; }
.cinfo { border: 1px solid var(--line); background: var(--surface); padding: 2.4rem 2.2rem; }
.cinfo-item { padding: 1.25rem 0; border-bottom: 1px solid var(--line); }
.cinfo-item:last-child { border-bottom: 0; padding-bottom: .4rem; }
.cinfo-item label { display: block; font: 600 .64rem var(--mono); letter-spacing: .28em; color: var(--text-dim); margin-bottom: .55rem; }
.cinfo-item .val { font: 400 1.12rem var(--serif); letter-spacing: .04em; color: var(--text); }
.cinfo-item a.val:hover { color: var(--gold-hi); }
.orbit-deco { display: block; width: 100%; max-width: 300px; margin: 2.2rem auto 0; opacity: .85; }
.orbit-deco .spin { animation: spin 26s linear infinite; transform-origin: 160px 160px; transform-box: view-box; }
.orbit-deco .spin--rev { animation: spin 40s linear infinite reverse; }

.cform { border: 1px solid var(--line); background: var(--surface); padding: 2.6rem 2.4rem; }
.cform h3 { font: 600 1.4rem var(--serif); letter-spacing: .1em; margin-bottom: .4rem; }
.form-sub { font-size: .88rem; color: var(--text-dim); margin-bottom: 2rem; }
.frow { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; }
.field { margin-bottom: 1.7rem; }
.field label { display: block; font: 600 .66rem var(--mono); letter-spacing: .26em; color: var(--text-dim); margin-bottom: .7rem; }
.field label b { color: var(--gold); font-weight: 600; }
.field input, .field textarea {
  width: 100%;
  background: rgba(7, 11, 22, .55);
  border: 1px solid var(--line);
  color: var(--text);
  padding: .9rem 1.05rem;
  font: 400 .98rem var(--sans);
  border-radius: 2px;
  transition: border-color .3s, box-shadow .3s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(230, 192, 121, .12); }
.field textarea { min-height: 140px; resize: vertical; }
.field .fmsg { display: none; font-size: .75rem; color: var(--err); margin-top: .45rem; }
.field.is-err input, .field.is-err textarea { border-color: var(--err); }
.field.is-err .fmsg { display: block; }
.form-status { margin-top: 1.2rem; font-size: .85rem; color: var(--gold); letter-spacing: .05em; opacity: 0; transition: opacity .4s; }
.form-status.show { opacity: 1; }

/* ---------- 页脚 ---------- */
.footer { background: var(--bg-deep); border-top: 1px solid var(--line); padding: 4.5rem 0 2rem; margin-top: 6rem; }
.footer-word {
  font: 700 clamp(3.2rem, 13vw, 9.5rem)/1 var(--serif);
  letter-spacing: .1em; text-align: center;
  color: transparent; -webkit-text-stroke: 1px rgba(230, 192, 121, .16);
  user-select: none; margin-bottom: 2.2rem;
}
.footer-phases { display: flex; justify-content: center; gap: 1.6rem; margin-bottom: 3.4rem; }
.footer-phases .ph { width: 16px; height: 16px; opacity: .55; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 2.5rem; padding-bottom: 3rem; border-bottom: 1px solid var(--line); }
.f-col h4 { font: 600 .68rem var(--mono); letter-spacing: .3em; color: var(--gold); margin-bottom: 1.3rem; }
.f-col a, .f-col span { display: block; font-size: .9rem; color: var(--text-mid); line-height: 2.3; transition: color .3s; }
.f-col a:hover { color: var(--gold-hi); }
.f-brand p { margin-top: 1.2rem; font-size: .88rem; color: var(--text-dim); line-height: 2; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  gap: 1rem; flex-wrap: wrap; padding-top: 1.7rem;
  font: 400 .74rem var(--mono); letter-spacing: .08em; color: var(--text-dim);
}
.footer-bottom a:hover { color: var(--gold); }

/* ---------- 显现动画 ---------- */
html.js .reveal {
  opacity: 0; transform: translateY(26px);
  transition: opacity .85s ease, transform .85s cubic-bezier(.22, .61, .36, 1);
  transition-delay: var(--d, 0s);
}
html.js .reveal.in { opacity: 1; transform: none; }

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

/* ---------- 响应式 ---------- */
@media (max-width: 1020px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .why-grid, .story-grid, .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
  .story-lead { position: static; }
  .team { grid-template-columns: repeat(2, 1fr); }
  .why-watermark { display: none; }
}
@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: rgba(6, 9, 18, .97);
    border-bottom: 1px solid var(--line);
    padding: .6rem 2rem 1.6rem;
    transform: translateY(-10px); opacity: 0; pointer-events: none;
    transition: opacity .35s, transform .35s;
  }
  html.menu-open .links { opacity: 1; transform: none; pointer-events: auto; }
  .links a { padding: 1.05rem 0; border-bottom: 1px solid var(--line); font-size: 1rem; }
  .links a:last-child { border-bottom: 0; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-moon { width: min(56vw, 300px); margin: 3rem auto 0; }
  .page-hero-grid { grid-template-columns: 1fr; }
  .page-moon { width: 170px; margin: 0 auto; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .section { padding: 4.5rem 0; }
  .cards, .steps, .values, .team { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3)::before { display: none; }
  .frow { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-horizon .hz-geo { display: none; }
  .tl::before { left: 22px; }
  .tl-item { display: block; position: relative; padding-left: 66px; margin-bottom: 2.6rem; }
  .tl-node { position: absolute; left: 0; top: 0; }
  .tl-year { display: block; text-align: left; margin: 0 0 .6rem; }
  .tl-item:nth-child(even) .tl-body p, .tl-body p { text-align: left; max-width: none; }
}