/* ==========================================================================
   StarMii — 品牌展示网站
   色彩取自品牌 PPT：深蓝 #0F2D5F / 蓝 #2D6EC8 / 橙 #EB782D / 浅橙 #FFF4E9
   ========================================================================== */

:root {
  /* 品牌主色 */
  --navy: #0f2d5f;
  --navy-700: #16406f;
  --blue: #2d6ec8;
  --blue-100: #e8f0fb;
  --orange: #eb782d;
  --orange-600: #d96519;
  --orange-100: #fff4e9;

  /* 暖中性色（呼应产品图的米色影调） */
  --cream: #fffaf4;
  --sand: #faf4ea;
  --sand-2: #f4ebdd;
  --sand-3: #ece1cf;
  --line: #e9e1d4;
  --line-2: #e4e8ee;

  /* 文字 */
  --ink: #12233c;
  --ink-2: #4d5f77;
  --ink-3: #8494a8;

  /* 深色区块 */
  --deep: #0d1e38;
  --deep-2: #143055;

  --ok: #3a9d6e;

  --radius-s: 14px;
  --radius: 22px;
  --radius-l: 32px;
  --radius-xl: 44px;

  --shadow-s: 0 2px 8px rgba(18, 35, 60, 0.05);
  --shadow: 0 10px 30px -12px rgba(18, 35, 60, 0.16), 0 2px 8px rgba(18, 35, 60, 0.04);
  --shadow-l: 0 30px 70px -30px rgba(18, 35, 60, 0.32), 0 6px 18px rgba(18, 35, 60, 0.05);

  --container: 1180px;
  --nav-h: 70px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei",
    "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--cream);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

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

/* ---------- 布局工具 ---------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 26px; }
.section { padding: 104px 0; position: relative; }
.section--tight { padding: 72px 0; }
.section--sand { background: var(--sand); }
.section--deep { background: var(--deep); color: #e8edf5; }
.section--deep .sec-lead,
.section--deep p { color: #a9bad1; }

.center { text-align: center; }
.stack-sm > * + * { margin-top: 10px; }

/* ---------- 文字 ---------- */
h1, h2, h3, h4 { margin: 0; font-weight: 800; letter-spacing: -0.022em; line-height: 1.16; }

h1 { font-size: clamp(32px, 4.3vw, 56px); }
h2 { font-size: clamp(27px, 3.4vw, 43px); }
h3 { font-size: clamp(19px, 1.7vw, 23px); letter-spacing: -0.01em; }

p { margin: 0; }
.lead { font-size: clamp(16px, 1.35vw, 19px); color: var(--ink-2); line-height: 1.85; }
.muted { color: var(--ink-3); font-size: 14px; }
.small { font-size: 14.5px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
}
.eyebrow::before {
  content: "";
  width: 22px; height: 2px; border-radius: 2px;
  background: var(--orange);
  flex: none;
}
.eyebrow--plain::before { display: none; }

.sec-head { max-width: 760px; }
.sec-head .lead { margin-top: 18px; }
.sec-head--center { margin: 0 auto; text-align: center; }
.sec-head--center .eyebrow { justify-content: center; }

.hl { color: var(--orange); }
.underline-warm {
  background: linear-gradient(transparent 62%, rgba(235, 120, 45, 0.28) 0);
  padding: 0 2px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s cubic-bezier(0.2, 0.8, 0.3, 1), box-shadow 0.25s, background 0.25s, color 0.25s;
  white-space: nowrap;
}
.btn svg { flex: none; transition: transform 0.25s; }
.btn:hover { transform: translateY(-2px); }
.btn:hover svg { transform: translateX(3px); }

.btn--primary { background: var(--orange); color: #fff; box-shadow: 0 10px 24px -10px rgba(235, 120, 45, 0.75); }
.btn--primary:hover { background: var(--orange-600); box-shadow: 0 16px 30px -12px rgba(235, 120, 45, 0.85); }

.btn--navy { background: var(--navy); color: #fff; box-shadow: 0 10px 24px -12px rgba(15, 45, 95, 0.7); }
.btn--navy:hover { background: var(--navy-700); }

.btn--ghost { background: transparent; color: var(--navy); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--navy); background: rgba(15, 45, 95, 0.04); }

.btn--onDark { background: rgba(255, 255, 255, 0.09); color: #fff; border-color: rgba(255, 255, 255, 0.22); }
.btn--onDark:hover { background: rgba(255, 255, 255, 0.16); }

.btn-row { display: flex; flex-wrap: wrap; gap: 14px; }

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  z-index: 90;
  display: flex;
  align-items: center;
  background: rgba(255, 250, 244, 0.78);
  backdrop-filter: saturate(1.6) blur(14px);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s, box-shadow 0.3s;
}
.nav.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(255, 250, 244, 0.93);
  box-shadow: 0 6px 24px -18px rgba(18, 35, 60, 0.5);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; width: 100%; }

.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 21px; letter-spacing: -0.03em; color: var(--navy); }
.brand__mark { width: 30px; height: 30px; flex: none; }
.brand__mark .star { fill: var(--orange); }
.brand__mark .dot { fill: var(--navy); }
.brand small { font-size: 10.5px; font-weight: 700; letter-spacing: 0.16em; color: var(--ink-3); text-transform: uppercase; display: block; line-height: 1; margin-top: 2px; }

.nav__links { display: flex; align-items: center; gap: 6px; }
.nav__link {
  position: relative;
  padding: 9px 15px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-2);
  transition: color 0.22s, background 0.22s;
}
.nav__link:hover { color: var(--navy); background: rgba(15, 45, 95, 0.055); }
.nav__link.is-active { color: var(--navy); }
.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 1px;
  transform: translateX(-50%);
  width: 18px; height: 2.5px; border-radius: 2px;
  background: var(--orange);
}
.nav__cta { margin-left: 8px; padding: 11px 20px; font-size: 14.5px; }

.nav__toggle {
  display: none;
  width: 42px; height: 42px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav__toggle span { display: block; width: 17px; height: 1.8px; background: var(--navy); border-radius: 2px; position: relative; }
.nav__toggle span::before, .nav__toggle span::after {
  content: ""; position: absolute; left: 0; width: 17px; height: 1.8px; background: var(--navy); border-radius: 2px;
  transition: transform 0.25s, top 0.25s;
}
.nav__toggle span::before { top: -5.5px; }
.nav__toggle span::after { top: 5.5px; }
.nav.is-open .nav__toggle span { background: transparent; }
.nav.is-open .nav__toggle span::before { top: 0; transform: rotate(45deg); }
.nav.is-open .nav__toggle span::after { top: 0; transform: rotate(-45deg); }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  padding: calc(var(--nav-h) + 74px) 0 96px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -280px; right: -180px;
  width: 760px; height: 760px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, rgba(235, 120, 45, 0.15), rgba(235, 120, 45, 0) 68%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  left: -200px; bottom: -240px;
  width: 620px; height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(45, 110, 200, 0.13), rgba(45, 110, 200, 0) 70%);
  pointer-events: none;
}
.hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 52px;
  align-items: center;
}
.hero h1 { margin: 22px 0 0; font-size: clamp(30px, 3.3vw, 46px); }
.hero .lead { margin-top: 24px; max-width: 30em; }
.hero .btn-row { margin-top: 34px; }

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 30px 42px;
  margin-top: 46px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}
.hero__meta div strong { display: block; font-size: 26px; font-weight: 800; color: var(--navy); letter-spacing: -0.03em; }
.hero__meta div span { font-size: 13.5px; color: var(--ink-3); }

/* Hero 视觉组合 */
.hero__visual { position: relative; }
.hv-stage {
  position: relative;
  border-radius: var(--radius-xl);
  background: linear-gradient(160deg, var(--sand-2), var(--sand));
  padding: 26px;
  box-shadow: var(--shadow-l);
  overflow: hidden;
}
.hv-stage::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(15, 45, 95, 0.07) 1px, transparent 1px);
  background-size: 15px 15px;
  opacity: 0.55;
  pointer-events: none;
}
.hv-stage img {
  position: relative;
  z-index: 1;
  width: 100%;
  border-radius: 30px;
  object-fit: cover;
  object-position: 50% 40%;
  aspect-ratio: 4 / 4.6;
}
.hv-float {
  position: absolute;
  left: -30px;
  bottom: 26px;
  z-index: 3;
  width: 162px;
  background: #fff;
  border-radius: 26px;
  padding: 12px;
  box-shadow: var(--shadow-l);
  border: 1px solid var(--line);
  animation: floaty 6.5s ease-in-out infinite;
}
.hv-float img { border-radius: 17px; aspect-ratio: 1 / 1; object-fit: cover; }
.hv-float b { display: block; font-size: 13.5px; color: var(--navy); margin-top: 9px; letter-spacing: -0.01em; }
.hv-float span { display: block; font-size: 11.5px; color: var(--ink-3); }
.hv-tag {
  position: absolute;
  right: -16px; top: 30px;
  z-index: 3;
  background: var(--navy);
  color: #fff;
  border-radius: 999px;
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: 0 14px 30px -14px rgba(15, 45, 95, 0.8);
}
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-11px); }
}

/* ---------- 卡片通用 ---------- */
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow-s);
  transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.3, 1), box-shadow 0.3s, border-color 0.3s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--sand-3); }
.card h3 { margin-bottom: 10px; }
.card p { color: var(--ink-2); font-size: 15px; line-height: 1.8; }

.grid { display: grid; gap: 22px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.num {
  width: 40px; height: 40px;
  border-radius: 13px;
  display: grid; place-items: center;
  font-weight: 800; font-size: 15px;
  background: var(--orange-100);
  color: var(--orange);
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}
.num--blue { background: var(--blue-100); color: var(--blue); }

.icon-badge {
  width: 52px; height: 52px;
  border-radius: 17px;
  display: grid; place-items: center;
  background: var(--orange-100);
  color: var(--orange);
  margin-bottom: 20px;
}
.icon-badge--blue { background: var(--blue-100); color: var(--blue); }
.icon-badge--navy { background: rgba(15, 45, 95, 0.08); color: var(--navy); }

/* ---------- 产品入口卡 ---------- */
.products { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.pcard {
  position: relative;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow: var(--shadow-s);
  transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.3, 1), box-shadow 0.35s, border-color 0.35s;
}
.pcard:hover { transform: translateY(-6px); box-shadow: var(--shadow-l); border-color: var(--sand-3); }
.pcard__media { position: relative; background: var(--sand); overflow: hidden; }
.pcard__media img {
  width: 100%;
  aspect-ratio: 4 / 4.6;
  object-fit: cover;
  object-position: 50% 20%;
  transition: transform 0.7s cubic-bezier(0.2, 0.8, 0.3, 1);
}
.pcard__media--wide img { object-position: 50% 52%; }
.pcard:hover .pcard__media img { transform: scale(1.045); }
.pcard__badge {
  position: absolute; left: 20px; top: 20px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  border-radius: 999px;
  padding: 7px 15px;
  font-size: 12.5px; font-weight: 700;
  color: var(--navy);
  box-shadow: var(--shadow-s);
}
.pcard__badge--orange { background: var(--orange); color: #fff; }
.pcard__body { padding: 30px 32px 34px; display: flex; flex-direction: column; flex: 1; }
.pcard__name { display: flex; align-items: baseline; gap: 10px; }
.pcard__name b { font-size: 25px; font-weight: 800; letter-spacing: -0.03em; color: var(--navy); }
.pcard__name i { font-style: normal; font-size: 12px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); }
.pcard__body p { margin-top: 13px; color: var(--ink-2); font-size: 15px; }
.pcard__feats { margin: 22px 0 0; padding: 0; list-style: none; display: grid; gap: 11px; }
.pcard__feats li { position: relative; padding-left: 24px; font-size: 14.5px; color: var(--ink-2); }
.pcard__feats li::before {
  content: "";
  position: absolute; left: 0; top: 8px;
  width: 13px; height: 13px;
  border-radius: 50%;
  background: var(--orange-100);
  box-shadow: inset 0 0 0 3px var(--orange);
}
.pcard__foot { margin-top: auto; padding-top: 28px; display: flex; align-items: center; gap: 12px; }
.pcard__link { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; color: var(--orange); font-size: 15px; }
.pcard__link svg { transition: transform 0.25s; }
.pcard:hover .pcard__link svg { transform: translateX(4px); }
.pcard__price { margin-left: auto; font-size: 13px; color: var(--ink-3); font-weight: 600; }

/* ---------- 分栏（图文） ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
.split--wide-right { grid-template-columns: 0.9fr 1.1fr; }
.split--wide-left { grid-template-columns: 1.1fr 0.9fr; }
.split__media {
  position: relative;
  border-radius: var(--radius-l);
  overflow: hidden;
  background: var(--sand);
  box-shadow: var(--shadow);
}
.split__media img { width: 100%; height: 100%; object-fit: cover; }

.ticks { margin: 26px 0 0; padding: 0; list-style: none; display: grid; gap: 17px; }
.ticks li { display: flex; gap: 14px; align-items: flex-start; }
.ticks .tk {
  flex: none;
  width: 25px; height: 25px; border-radius: 50%;
  background: var(--orange);
  color: #fff;
  display: grid; place-items: center;
  margin-top: 2px;
}
.ticks b { display: block; font-size: 15.5px; color: var(--ink); font-weight: 700; }
.ticks span { font-size: 14.5px; color: var(--ink-2); line-height: 1.7; }

/* ---------- 关键卖点（深色） ---------- */
.highlight {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 44px;
  align-items: center;
  background: linear-gradient(120deg, var(--navy), var(--deep-2));
  border-radius: var(--radius-l);
  padding: 46px 50px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.highlight::after {
  content: "";
  position: absolute; right: -60px; top: -80px;
  width: 320px; height: 320px; border-radius: 50%;
  background: radial-gradient(circle, rgba(235, 120, 45, 0.45), rgba(235, 120, 45, 0) 68%);
}
.highlight h3 { font-size: clamp(21px, 2.1vw, 28px); letter-spacing: -0.02em; max-width: 22em; }
.highlight p { color: #b8c8de; margin-top: 14px; font-size: 15.5px; max-width: 46em; }
.highlight > * { position: relative; z-index: 1; }
.highlight__chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 15px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 13.5px; font-weight: 600;
}
.chip--light { background: #fff; border-color: var(--line); color: var(--ink-2); }

/* ---------- 时间线 ---------- */
.timeline { position: relative; margin-top: 56px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 15px;
  height: 2px;
  background: linear-gradient(90deg, var(--sand-3), var(--orange), var(--sand-3));
  border-radius: 2px;
}
.tl-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; position: relative; }
.tl-item { padding-top: 44px; position: relative; }
.tl-item::before {
  content: "";
  position: absolute; left: 0; top: 8px;
  width: 15px; height: 15px; border-radius: 50%;
  background: #fff;
  box-shadow: inset 0 0 0 3px var(--orange), 0 0 0 5px var(--cream);
}
.tl-item b { display: block; font-size: 14px; font-weight: 800; color: var(--orange); letter-spacing: 0.03em; }
.tl-item strong { display: block; font-size: 16px; font-weight: 700; color: var(--navy); margin-top: 8px; letter-spacing: -0.01em; }
.tl-item span { display: block; font-size: 13.5px; color: var(--ink-2); margin-top: 7px; line-height: 1.7; }

/* ---------- 页头（内页） ---------- */
.phero {
  position: relative;
  padding: calc(var(--nav-h) + 62px) 0 78px;
  overflow: hidden;
}
.phero::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, var(--sand) 0%, rgba(250, 244, 234, 0) 100%);
  pointer-events: none;
}
.phero__inner { position: relative; }
.phero__grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 60px; align-items: center; }
.phero h1 { margin: 20px 0 0; }
.phero .lead { margin-top: 24px; max-width: 32em; }
.phero .btn-row { margin-top: 32px; }

.crumb { display: flex; align-items: center; gap: 9px; font-size: 13.5px; color: var(--ink-3); font-weight: 600; }
.crumb a:hover { color: var(--orange); }

.phero__media {
  position: relative;
  border-radius: var(--radius-xl);
  background: linear-gradient(160deg, var(--sand-2), var(--sand));
  padding: 22px;
  box-shadow: var(--shadow-l);
}
.phero__media img { border-radius: 30px; width: 100%; }
.phero__media--flat { background: #fff; border: 1px solid var(--line); padding: 18px; }

/* 浮动规格标签 */
.spec-float {
  position: absolute;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 13px 18px;
  box-shadow: var(--shadow);
  font-size: 13px;
  line-height: 1.5;
}
.spec-float b { display: block; color: var(--navy); font-size: 15px; font-weight: 800; letter-spacing: -0.02em; }
.spec-float span { color: var(--ink-3); }
.spec-float--tl { left: -22px; top: 44px; }
.spec-float--br { right: -18px; bottom: 52px; }

/* ---------- 规格条 ---------- */
.specbar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.specbar > div { background: #fff; padding: 26px 24px; }
.specbar b { display: block; font-size: 20px; font-weight: 800; color: var(--navy); letter-spacing: -0.03em; }
.specbar span { display: block; font-size: 13px; color: var(--ink-3); margin-top: 5px; }

/* ---------- 详情标注（细节放大 + 注释） ---------- */
.detail-wrap {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 52px;
  align-items: start;
}
.detail-shot {
  position: relative;
  border-radius: var(--radius-l);
  overflow: hidden;
  background: var(--sand);
  box-shadow: var(--shadow-l);
}
.detail-shot img { width: 100%; display: block; }
@media (min-width: 1081px) {
  .detail-shot, .ui-shot { position: sticky; top: calc(var(--nav-h) + 22px); }
}
.anno-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.anno {
  display: flex;
  gap: 16px;
  padding: 18px 20px;
  border-radius: var(--radius-s);
  background: #fff;
  border: 1px solid var(--line);
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.anno:hover { border-color: var(--sand-3); transform: translateX(3px); box-shadow: var(--shadow-s); }
.anno__n {
  flex: none;
  width: 26px; height: 26px; border-radius: 9px;
  display: grid; place-items: center;
  font-size: 12.5px; font-weight: 800;
  background: var(--navy); color: #fff;
  margin-top: 2px;
}
.anno b { display: block; font-size: 15.5px; font-weight: 700; color: var(--ink); letter-spacing: -0.01em; }
.anno p { font-size: 14px; color: var(--ink-2); margin-top: 5px; line-height: 1.72; }

/* ---------- 界面对照（go 屏幕） ---------- */
.ui-shot {
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow: var(--shadow-l);
  border: 1px solid var(--line);
  background: #fff;
}
.ui-shot img { width: 100%; display: block; }

.ui-legend { display: grid; gap: 14px; margin-top: 28px; }
.ui-legend div { display: flex; gap: 12px; align-items: flex-start; font-size: 14.5px; color: var(--ink-2); }
.ui-legend i {
  flex: none; width: 8px; height: 8px; border-radius: 50%;
  background: var(--orange); margin-top: 8px;
}

/* ---------- 场景卡（配色块） ---------- */
.scene {
  border-radius: var(--radius);
  padding: 32px 30px;
  background: #fff;
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  min-height: 100%;
  transition: transform 0.3s, box-shadow 0.3s;
}
.scene:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.scene__tag { font-size: 11.5px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); }
.scene h3 { margin: 14px 0 0; }
.scene p { margin-top: 12px; color: var(--ink-2); font-size: 14.5px; }
.scene__en { margin-top: auto; padding-top: 22px; font-size: 12.5px; color: var(--ink-3); letter-spacing: 0.06em; }

/* ---------- 数据/指标块 ---------- */
.metric {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
}
.metric b { display: block; font-size: clamp(26px, 3vw, 36px); font-weight: 800; color: var(--navy); letter-spacing: -0.035em; line-height: 1.1; }
.metric b em { font-style: normal; font-size: 0.55em; font-weight: 700; color: var(--ink-3); letter-spacing: 0; margin-left: 2px; }
.metric b.metric--word { font-size: clamp(24px, 2.5vw, 30px); letter-spacing: -0.02em; }
.metric span { display: block; margin-top: 10px; font-size: 14px; color: var(--ink-2); }
.metric small { display: block; margin-top: 6px; font-size: 12.5px; color: var(--ink-3); }

/* ---------- 提示条 ---------- */
.note {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 20px 24px;
  border-radius: var(--radius-s);
  background: var(--orange-100);
  border: 1px solid #f6dfc8;
  font-size: 14.5px;
  color: #8a4a15;
  line-height: 1.72;
}
.note svg { flex: none; margin-top: 3px; color: var(--orange); }
.note--soft { background: var(--blue-100); border-color: #d5e3f7; color: #24548f; }
.note--soft svg { color: var(--blue); }

/* ---------- 双产品联动图 ---------- */
.link-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 26px;
  align-items: center;
}
.link-node {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  text-align: center;
  box-shadow: var(--shadow-s);
}
.link-node img { width: 100%; border-radius: var(--radius-s); aspect-ratio: 1/1; object-fit: cover; }
.link-node b { display: block; margin-top: 16px; font-size: 18px; font-weight: 800; color: var(--navy); letter-spacing: -0.02em; }
.link-node span { display: block; font-size: 13.5px; color: var(--ink-3); margin-top: 4px; }
.link-mid { display: grid; gap: 10px; justify-items: center; color: var(--orange); }
.link-mid em {
  font-style: normal;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--orange);
  background: var(--orange-100);
  border-radius: 999px;
  padding: 5px 14px;
  white-space: nowrap;
}

/* ---------- CTA ---------- */
.cta {
  position: relative;
  border-radius: var(--radius-xl);
  background: linear-gradient(130deg, var(--navy) 0%, #1b4a86 60%, #2d6ec8 100%);
  color: #fff;
  padding: 74px 60px;
  overflow: hidden;
  text-align: center;
}
.cta::before {
  content: "";
  position: absolute; left: 50%; bottom: -180px;
  transform: translateX(-50%);
  width: 620px; height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(235, 120, 45, 0.42), rgba(235, 120, 45, 0) 70%);
}
.cta > * { position: relative; z-index: 1; }
.cta h2 { font-size: clamp(26px, 3.2vw, 40px); }
.cta p { color: #bccde3; margin: 20px auto 0; max-width: 44em; font-size: 16px; }
.cta .btn-row { margin-top: 34px; justify-content: center; }

/* ---------- 页脚 ---------- */
.footer { background: var(--deep); color: #93a7c0; padding: 66px 0 40px; }
.footer__top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; }
.footer .brand { color: #fff; }
.footer .brand small { color: #6d84a3; }
.footer p { font-size: 14px; line-height: 1.8; max-width: 30em; margin-top: 18px; }
.footer h4 { font-size: 13px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: #fff; margin: 0 0 16px; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 11px; }
.footer a { font-size: 14.5px; transition: color 0.2s; }
.footer a:hover { color: var(--orange); }
.footer__bottom {
  margin-top: 52px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  justify-content: space-between;
  font-size: 13px;
  color: #6d84a3;
}

/* ---------- 滚动动效 ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.75s cubic-bezier(0.2, 0.8, 0.3, 1), transform 0.75s cubic-bezier(0.2, 0.8, 0.3, 1); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: 0.08s; }
.reveal[data-d="2"] { transition-delay: 0.16s; }
.reveal[data-d="3"] { transition-delay: 0.24s; }
.reveal[data-d="4"] { transition-delay: 0.32s; }
.reveal[data-d="5"] { transition-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
  .hv-float { animation: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .hero__grid, .phero__grid { grid-template-columns: 1fr; gap: 48px; }
  .hero__visual { max-width: 520px; }
  .split, .split--wide-left, .split--wide-right { grid-template-columns: 1fr; gap: 40px; }
  .detail-wrap { grid-template-columns: 1fr; gap: 38px; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .tl-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .timeline::before { display: none; }
  .footer__top { grid-template-columns: 1fr 1fr; gap: 34px; }
}

@media (max-width: 860px) {
  .nav__links {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: var(--cream);
    border-bottom: 1px solid var(--line);
    padding: 14px 20px 22px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s, transform 0.25s;
    box-shadow: 0 24px 40px -26px rgba(18, 35, 60, 0.5);
  }
  .nav.is-open .nav__links { opacity: 1; transform: none; pointer-events: auto; }
  .nav__link { padding: 13px 16px; border-radius: 14px; font-size: 16px; }
  .nav__link.is-active { background: var(--orange-100); }
  .nav__link.is-active::after { display: none; }
  .nav__cta { margin: 8px 0 0; justify-content: center; }
  .nav__toggle { display: inline-flex; }

  .products, .grid--3, .grid--2 { grid-template-columns: 1fr; }
  .link-flow { grid-template-columns: 1fr; }
  .link-mid svg { transform: rotate(90deg); }
  .highlight { grid-template-columns: 1fr; padding: 36px 30px; gap: 26px; }
  .specbar { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 76px 0; }
  .cta { padding: 54px 28px; }
  .spec-float--tl { left: 10px; top: 14px; }
  .spec-float--br { right: 10px; bottom: 18px; }
  .hero__meta { gap: 22px 30px; }
}

@media (max-width: 560px) {
  .container { padding: 0 18px; }
  .tl-grid { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr; }
  .hv-float { width: 138px; left: -10px; bottom: 18px; }
  .hv-tag { right: -6px; }
  .pcard__body { padding: 24px 22px 28px; }
  .card { padding: 24px 22px; }
  .hero__meta div strong { font-size: 22px; }
}