/* ============================================================
   悠宇佳科技官网 · 设计系统
   主题：墨色纸上书写的温暖 —— 深墨 / 珊瑚 / 沙金
   字体：Noto Serif SC（标题）+ Noto Sans SC（正文）+ Space Grotesk（英文）
   ============================================================ */
:root {
  /* 色彩 */
  --ink: #12241c;          /* 主墨色（深绿墨） */
  --ink-2: #1d3a2e;
  --ink-soft: #5c6f66;
  --ink-faint: #8a9a92;
  --coral: #e8593c;        /* 珊瑚橙 强调 */
  --coral-soft: #f6e9e3;
  --sand: #e7b45f;         /* 沙金 */
  --cream: #faf6ef;        /* 米白 背景 */
  --paper: #fffdf8;
  --line: #ece5d8;

  /* 字体 */
  --f-serif: "Noto Serif SC", "Songti SC", serif;
  --f-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --f-en: "Space Grotesk", var(--f-sans);

  /* 尺寸 */
  --container: 1200px;
  --radius: 20px;
  --radius-sm: 12px;

  /* 阴影 */
  --shadow: 0 30px 60px -30px rgba(18, 36, 28, 0.22);
  --shadow-soft: 0 16px 40px -22px rgba(18, 36, 28, 0.18);

  --header-h: 76px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--f-sans);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
b, strong { font-weight: 700; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 28px; }

h1, h2, h3, h4 { font-family: var(--f-serif); font-weight: 600; line-height: 1.25; letter-spacing: 0.01em; }
h1 { font-weight: 900; }

::selection { background: var(--coral); color: #fff; }

/* 标题衬线字母放大号 */
.eyebrow {
  display: inline-block;
  font-family: var(--f-en);
  font-size: 12px;
  letter-spacing: 0.32em;
  color: var(--coral);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 16px;
}

/* ============ 顶栏 ============ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  height: var(--header-h);
  background: rgba(250, 246, 239, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s, background .3s;
}
.site-header.scrolled { border-bottom: 1px solid var(--line); background: rgba(250,246,239,.9); box-shadow: 0 10px 30px -22px rgba(18,36,28,.2); }
.nav-wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; }

.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark { width: 42px; height: 42px; color: var(--ink); flex: 0 0 auto; }
.brand-mark svg { width: 100%; height: 100%; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text b { font-family: var(--f-serif); font-size: 21px; font-weight: 900; letter-spacing: 0.06em; }
.brand-text small { font-family: var(--f-en); font-size: 10px; letter-spacing: 0.4em; color: var(--ink-faint); }

.main-nav { display: flex; gap: 8px; }
.nav-link {
  position: relative;
  padding: 8px 16px;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color .25s;
}
.nav-link::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 2px;
  height: 2px; background: var(--coral); border-radius: 2px;
  transform: scaleX(0); transform-origin: left; transition: transform .3s ease;
}
.nav-link:hover { color: var(--ink); }
.nav-link.active { color: var(--ink); font-weight: 700; }
.nav-link.active::after, .nav-link:hover::after { transform: scaleX(1); }

.nav-toggle { display: none; background: none; border: 0; width: 44px; height: 44px; cursor: pointer; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: .3s; }
.nav-toggle.open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity: 0; }
.nav-toggle.open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* ============ 按钮 ============ */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 26px; border-radius: 999px; font-weight: 600; font-size: 15px; border: 1.5px solid transparent; cursor: pointer; transition: transform .25s, box-shadow .25s, background .25s, color .25s; }
.btn svg { transition: transform .25s; }
.btn:hover svg { transform: translateX(3px); }
.btn-primary { background: var(--ink); color: #fff; box-shadow: var(--shadow-soft); }
.btn-primary:hover { background: var(--coral); transform: translateY(-2px); }
.btn-ghost { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn-ghost:hover { background: var(--ink); color: #fff; transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--ink); }
.btn-light:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.link-more { font-weight: 600; color: var(--coral); border-bottom: 1.5px solid transparent; transition: border-color .25s; padding-bottom: 2px; }
.link-more:hover { border-color: var(--coral); }

/* ============ Hero ============ */
.hero { padding: 72px 0 40px; position: relative; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
.hero-copy h1 { font-size: clamp(34px, 5vw, 58px); line-height: 1.15; margin-bottom: 24px; }
.hl { position: relative; color: var(--coral); white-space: nowrap; }
.hl::after { content: ""; position: absolute; left: 0; right: 0; bottom: 6px; height: .42em; background: var(--coral-soft); z-index: -1; border-radius: 4px; transform: skewX(-6deg); }
.lead { font-size: 18px; color: var(--ink-soft); max-width: 520px; margin-bottom: 34px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-visual { position: relative; display: flex; justify-content: center; min-height: 420px; }
.orbit { position: relative; width: 380px; height: 380px; }
.orbit-ring { position: absolute; inset: 0; border: 1.5px dashed var(--line); border-radius: 50%; }
.orbit-ring.r1 { animation: spin 40s linear infinite; }
.orbit-ring.r2 { inset: 44px; border-style: solid; border-color: var(--coral-soft); }
@keyframes spin { to { transform: rotate(360deg); } }
.core { position: absolute; inset: 50%; width: 120px; height: 120px; transform: translate(-50%,-50%); display: grid; place-items: center; }
.squid { color: var(--ink); animation: bob 6s ease-in-out infinite; }
.squid svg { width: 96px; height: 96px; filter: drop-shadow(0 18px 30px rgba(18,36,28,.25)); }
@keyframes bob { 0%,100%{ transform: translateY(0) } 50% { transform: translateY(-12px) } }
.tech-chip { position: absolute; font-family: var(--f-en); font-size: 13px; font-weight: 600; padding: 6px 12px; border-radius: 999px; background: var(--paper); box-shadow: var(--shadow-soft); letter-spacing: .03em; }
.c-js { top: 6px; left: 34px; color: var(--sand); }
.c-py { bottom: 30px; left: 0; color: var(--coral); }
.c-css { right: -6px; top: 120px; color: #3a76c9; }

.float-note { position: absolute; background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 10px 16px; font-size: 13px; box-shadow: var(--shadow-soft); display: flex; align-items: center; gap: 8px; color: var(--ink-soft); }
.float-note em { font-style: normal; color: var(--coral); font-weight: 700; font-family: var(--f-en); }
.note-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--coral); box-shadow: 0 0 0 4px var(--coral-soft); }
.note-icon { color: var(--sand); font-family: var(--f-en); font-weight: 700; }
.note-1 { top: 26px; right: 0; animation: bob 5s ease-in-out infinite; }
.note-2 { bottom: 6px; left: -8px; animation: bob 6s ease-in-out infinite 1s; }

/* 声明条 */
.statement.band { margin: 30px 0 0; }
.band { background: var(--ink); color: #eef4ef; }
.statement .container { padding-top: 30px; padding-bottom: 30px; text-align: center; }
.statement p { font-size: 17px; color: #cfe0d4; }
.statement b { color: #fff; font-weight: 700; }
.statement b:nth-of-type(2), .statement b:nth-of-type(3) { color: var(--sand); }

/* ============ Section ============ */
.section { padding: 96px 0; }
.section.alt { background: var(--paper); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-head { margin-bottom: 52px; }
.sec-head.row { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; }
.sec-head h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 700; }

/* 卡片 */
.card-grid.three { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.tcard {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 30px; transition: transform .3s, box-shadow .3s, border-color .3s;
  position: relative; overflow: hidden;
}
.tcard::before { content: ""; position: absolute; inset: 0 0 auto; height: 4px; background: var(--line); transition: background .3s; }
.tcard:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: transparent; }
.tcard:hover::before { background: var(--coral); }
.tcard-ico { width: 56px; height: 56px; border-radius: 16px; display: grid; place-items: center; margin-bottom: 22px; }
.ico-ink { background: var(--ink); color: #fff; }
.ico-coral { background: var(--coral-soft); color: var(--coral); }
.ico-sand { background: #f4e9d5; color: var(--sand); }
.tcard h3 { font-size: 21px; font-weight: 700; margin-bottom: 12px; }
.tcard p { color: var(--ink-soft); margin-bottom: 20px; font-size: 15px; }
.tag { font-size: 12px; color: var(--coral); background: var(--coral-soft); padding: 5px 12px; border-radius: 999px; font-weight: 600; }

/* 数据统计 */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; text-align: center; }
.stat b { display: block; font-family: var(--f-en); font-size: clamp(40px, 5vw, 60px); font-weight: 600; color: var(--ink); line-height: 1.1; }
.stat b::after { content: "+"; color: var(--coral); }
.stat span { color: var(--ink-faint); font-size: 15px; }
.stat { padding: 20px 0; }

/* 作品列表 */
.work-list { border-top: 1px solid var(--line); }
.work-item {
  display: grid; grid-template-columns: 90px 1fr auto; align-items: center; gap: 24px;
  padding: 30px 12px; border-bottom: 1px solid var(--line);
  transition: background .3s, padding-left .3s;
}
.work-item:hover { background: var(--paper); padding-left: 26px; }
.work-num { font-family: var(--f-en); font-size: 15px; color: var(--coral); font-weight: 600; letter-spacing: .05em; }
.work-main h3 { font-size: 22px; font-weight: 700; margin-bottom: 6px; }
.work-main p { color: var(--ink-soft); }
.work-tag { font-size: 13px; color: var(--ink-faint); border: 1px solid var(--line); padding: 6px 14px; border-radius: 999px; white-space: nowrap; }

/* CTA */
.cta-panel {
  background: linear-gradient(120deg, var(--ink), var(--ink-2));
  color: #fff; border-radius: 26px; padding: 60px 56px;
  display: flex; flex-direction: column; align-items: flex-start; gap: 8px;
  position: relative; overflow: hidden;
}
.cta-panel::after { content: ""; position: absolute; right: -60px; bottom: -80px; width: 300px; height: 300px; border-radius: 50%; border: 40px solid rgba(255,255,255,.04); }
.cta-panel h2 { font-size: clamp(26px, 3.6vw, 40px); font-weight: 700; margin-bottom: 8px; position: relative; z-index: 1; }
.cta-panel p { color: #cfe0d4; margin-bottom: 26px; position: relative; z-index: 1; }
.cta-panel .btn { position: relative; z-index: 1; }

/* ============ Footer ============ */
.site-footer { background: #0b1410; color: #a9bbb0; padding: 70px 0 30px; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.6fr; gap: 44px; }
.brand-light { color: #fff; }
.brand-light .brand-text small { color: #7c8f84; }
.foot-brand p { margin-top: 18px; font-size: 14px; max-width: 320px; color: #8fa399; }
.foot-col h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 18px; font-family: var(--f-sans); letter-spacing: .02em; }
.foot-col a { display: block; margin-bottom: 12px; font-size: 14px; transition: color .25s, padding-left .25s; }
.foot-col a:hover { color: var(--sand); padding-left: 6px; }
.foot-meta p { font-size: 13.5px; color: #7c8f84; margin-bottom: 16px; }
.copyright { line-height: 2; }
.copyright .icp { display: inline; margin-bottom: 0; padding-left: 0; color: #7c8f84; text-decoration: none; transition: color .25s; }
.copyright .icp:hover { color: var(--sand); }

/* ============ 内部页 Hero（横幅） ============ */
.page-head {
  padding: 84px 0 60px; position: relative; background:
    radial-gradient(1200px 400px at 80% -10%, rgba(231,180,95,.14), transparent 60%),
    radial-gradient(900px 380px at 10% 10%, rgba(232,89,60,.08), transparent 55%);
}
.page-head .container { max-width: 800px; }
.page-head h1 { font-size: clamp(32px, 4.6vw, 50px); font-weight: 900; margin-bottom: 18px; }
.page-head p { color: var(--ink-soft); font-size: 17px; }
.crumb { font-family: var(--f-en); font-size: 12px; letter-spacing: .28em; color: var(--ink-faint); margin-bottom: 22px; text-transform: uppercase; }
.crumb a { color: var(--coral); }

/* ============ 关于页 ============ */
.about-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-intro .lead { margin-bottom: 20px; }
.about-copy h2 { font-size: clamp(24px, 3vw, 34px); margin-bottom: 20px; font-weight: 700; }
.about-copy p { color: var(--ink-soft); margin-bottom: 16px; }
.about-visual { position: relative; }
.about-visual .card-paper {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px; box-shadow: var(--shadow);
  transform: rotate(-2deg);
}
.card-paper h4 { font-family: var(--f-en); letter-spacing: .06em; font-size: 13px; color: var(--coral); margin-bottom: 14px; font-weight: 600; }
.card-paper ul { list-style: none; }
.card-paper li { padding: 12px 0; border-bottom: 1px dashed var(--line); display: flex; justify-content: space-between; align-items: center; font-size: 15px; }
.card-paper li:last-child { border-bottom: 0; }
.card-paper li b { font-family: var(--f-en); font-weight: 500; color: var(--ink-soft); font-size: 13px; }

/* 原声明 / 心路历程 时间轴 */
.ethics-list { display: grid; gap: 18px; }
.eth-row { display: grid; grid-template-columns: 46px 1fr; gap: 20px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 22px 24px; align-items: flex-start; }
.eth-ico { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; color: #fff; }
.ico-a{background:#1d6f58} .ico-b{background:var(--coral)} .ico-c{background:var(--sand)} .ico-d{background:#3a76c9}
.ico-blue{background:#3a76c9; color:#fff;}
.eth-row h3 { font-size: 17px; margin-bottom: 6px; font-weight: 700; }
.eth-row p { color: var(--ink-soft); font-size: 14.5px; }

.timeline { position: relative; margin-top: 20px; padding-left: 28px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 4px; bottom: 4px; width: 2px; background: var(--line); }
.tl-item { position: relative; padding: 0 0 30px; }
.tl-item::before { content: ""; position: absolute; left: -26px; top: 6px; width: 14px; height: 14px; border-radius: 50%; background: var(--paper); border: 3px solid var(--coral); }
.tl-item .yr { font-family: var(--f-en); color: var(--coral); font-weight: 600; font-size: 13px; letter-spacing: .1em; }
.tl-item h4 { font-size: 18px; margin: 6px 0 6px; }
.tl-item p { color: var(--ink-soft); font-size: 14.5px; }

/* ============ 服务页 ============ */
.feat-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.feat-item { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 30px; display: grid; grid-template-columns: auto 1fr; gap: 20px; align-items: flex-start; transition: transform .3s, box-shadow .3s; }
.feat-item:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.feat-ico { width: 54px; height: 54px; border-radius: 14px; display: grid; place-items: center; flex: 0 0 auto; }
.feat-ico svg { width: 26px; height: 26px; }
.ico-ink, .ico-coral, .ico-sand, .ico-blue { color: #fff; }
.ico-ink { background: var(--ink); }
.ico-coral { background: var(--coral); }
.ico-sand { background: var(--sand); }
.ico-blue { background: #3a76c9; }
.feat-item h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.feat-item p { color: var(--ink-soft); font-size: 14.5px; }
.feat-body .mil { margin-top: 14px; font-size: 13px; color: var(--ink-faint); }

.stack-list { display: flex; flex-wrap: wrap; gap: 12px; }
.stack-chip { background: var(--paper); border: 1px solid var(--line); padding: 12px 22px; border-radius: 14px; font-weight: 600; transition: border-color .3s, background .3s; }
.stack-chip:hover { border-color: var(--coral); background: var(--coral-soft); color: var(--coral); }

/* ============ 联系页 ============ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 50px; align-items: start; }
.c-methods { display: grid; gap: 16px; }
.c-method { display: flex; gap: 18px; align-items: center; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 22px 24px; transition: transform .3s, box-shadow .3s; }
.c-method:hover { transform: translateY(-4px); box-shadow: var(--shadow-soft); }
.c-method .m-ico { width: 50px; height: 50px; border-radius: 12px; display: grid; place-items: center; color: #fff; flex: 0 0 auto; }
.c-method h4 { font-size: 16px; font-weight: 700; }
.c-method span { color: var(--ink-soft); font-size: 14px; }
.ico-wechat { background: #07c160; }
.c-method.qr-method { flex-direction: column; align-items: center; text-align: center; gap: 18px; padding: 30px 24px; }
.qr-method .qr-head { display: flex; align-items: center; gap: 16px; }
.qr-method .qr-head > div:last-child { text-align: left; }
.qr-img { width: 210px; max-width: 62vw; height: auto; border-radius: 12px; border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow-soft); }
.qr-tip { color: var(--ink-faint); font-size: 13px; margin: 0; }

.form-panel { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 40px 38px; box-shadow: var(--shadow-soft); }
.form-panel h3 { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.form-panel > p { color: var(--ink-soft); margin-bottom: 28px; font-size: 14.5px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.fg { display: flex; flex-direction: column; gap: 8px; }
.fg.full { grid-column: 1 / -1; }
.fg label { font-size: 14px; font-weight: 600; }
.fg label i { color: var(--coral); font-style: normal; }
.fg input, .fg select, .fg textarea {
  font-family: var(--f-sans); font-size: 15px; color: var(--ink);
  padding: 13px 15px; border: 1.5px solid var(--line); border-radius: 10px;
  background: var(--cream); transition: border-color .25s, box-shadow .25s; outline: none;
}
.fg textarea { resize: vertical; min-height: 130px; }
.fg input:focus, .fg select:focus, .fg textarea:focus { border-color: var(--coral); box-shadow: 0 0 0 4px var(--coral-soft); }
.form-actions { display: flex; align-items: center; gap: 20px; margin-top: 24px; }
.form-actions .btn { }
.hint { font-size: 13px; color: var(--ink-faint); }
.form-ok { display: none; margin-top: 20px; padding: 14px 18px; background: #e7f3ec; color: #1d6f58; border-radius: 10px; font-size: 14px; font-weight: 600; }
.form-ok.show { display: block; }

/* ============ 通用卡片 head ============ */
.head-center { text-align: center; max-width: 720px; margin: 0 auto 60px; }
.head-center .eyebrow { }
.head-center h2 { font-size: clamp(26px, 3.4vw, 40px); font-weight: 700; margin-bottom: 16px; }
.head-center p { color: var(--ink-soft); }

/* ============ 产品展示 ============ */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.badge-android { color: #3a76c9; background: #e4edfa; }
.product {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 34px 28px; position: relative; overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform .35s, box-shadow .35s;
}
.product::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 5px; background: linear-gradient(90deg, var(--ink), var(--coral)); opacity: 0; transition: opacity .35s; }
.product:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.product:hover::before { opacity: 1; }
.product[data-href] { cursor: pointer; }
.product-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 22px; }
.product-ico { width: 62px; height: 62px; border-radius: 18px; background: var(--ink); color: #fff; display: grid; place-items: center; box-shadow: var(--shadow-soft); }
.product-ico.ico-coral { background: var(--coral); }
.product-ico.ico-sand { background: var(--sand); }
.product-ico.ico-blue { background: #3a76c9; }
.product-badge { font-size: 12px; font-weight: 700; color: #1d6f58; background: #e3f1e9; padding: 6px 13px; border-radius: 999px; letter-spacing: .04em; }
.product h3 { font-size: 23px; font-weight: 800; }
.product-sub { font-family: var(--f-en); font-size: 12px; letter-spacing: .3em; text-transform: uppercase; color: var(--ink-faint); margin: 6px 0 20px; }
.product-feats { list-style: none; margin-bottom: 28px; flex: 1; }
.product-feats li { position: relative; padding: 9px 0 9px 30px; color: var(--ink-soft); font-size: 15px; border-bottom: 1px dashed var(--line); }
.product-feats li:last-child { border-bottom: 0; }
.product-feats li::before { content: ""; position: absolute; left: 4px; top: 17px; width: 12px; height: 12px; border-radius: 50%; border: 2.5px solid var(--coral); }
.product-foot { display: flex; align-items: center; justify-content: space-between; gap: 16px; border-top: 1px solid var(--line); padding-top: 20px; flex-wrap: wrap; }
.product-env { font-size: 12.5px; color: var(--ink-faint); }
.product-actions { display: inline-flex; gap: 10px; flex-wrap: wrap; }
.product-actions .btn svg { margin-left: -2px; }
.btn-sm { padding: 10px 20px; font-size: 14px; }
.product-note { text-align: center; color: var(--ink-soft); font-size: 14px; margin-top: 34px; }
.product-note b { color: var(--ink); }

/* ============ 产品介绍图 ============ */
.product-shot-wrap { margin: 0; }
.product-shot { width: 100%; display: block; border-radius: 18px; border: 1px solid var(--line); box-shadow: var(--shadow); }
.product-shot-wrap figcaption { text-align: center; margin-top: 16px; font-family: var(--f-en); font-size: 12px; letter-spacing: .3em; text-transform: uppercase; color: var(--ink-faint); }

/* ============ UI 设计作品墙 ============ */
.ui-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; margin-top: 8px; }
.ui-item {
  margin: 0; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: transform .35s, box-shadow .35s;
}
.ui-item:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.ui-item img { width: 100%; display: block; aspect-ratio: 16 / 10; object-fit: cover; object-position: top center; background: #0d1512; }
.ui-item figcaption { padding: 16px 20px 18px; display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.ui-item figcaption b { font-size: 15px; font-weight: 700; color: var(--ink); }
.ui-item figcaption span { font-size: 12.5px; color: var(--ink-faint); font-family: var(--f-en); letter-spacing: .04em; }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: 1fr; }
  .ui-gallery { grid-template-columns: repeat(2, 1fr); }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { min-height: 380px; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .feat-list { grid-template-columns: 1fr; }
  .about-intro { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; }
  .card-grid.three { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
}
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    background: var(--paper); flex-direction: column; gap: 0;
    padding: 12px 24px 24px; box-shadow: var(--shadow);
    transform: translateY(-16px); opacity: 0; pointer-events: none; transition: .3s;
    border-bottom: 1px solid var(--line);
  }
  .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-link { padding: 16px 8px; border-bottom: 1px solid var(--line); }
  .nav-link:last-child { border-bottom: 0; }
  .work-item { grid-template-columns: 40px 1fr; }
  .work-tag { display: none; }
  .foot-grid { grid-template-columns: 1fr; gap: 30px; }
  .ui-gallery { grid-template-columns: 1fr; gap: 20px; }
  .form-grid { grid-template-columns: 1fr; }
  .fg.full { grid-column: 1; }
  .sec-head.row { flex-direction: column; align-items: flex-start; }
  .cta-panel { padding: 44px 30px; }
  .statement p { font-size: 15px; }
  .hero { padding-top: 40px; }
  .float-note.note-2 { left: 0; }
}
@media (max-width: 480px) {
  .hero-visual { min-height: 320px; transform: scale(.92); }
  .orbit { width: 300px; height: 300px; }
  .tech-chip { font-size: 11px; }
  .float-note { font-size: 12px; padding: 8px 12px; }
  .container { padding: 0 20px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .product { padding: 26px 22px 22px; }
  .form-panel { padding: 30px 22px; }
}