/* =========================================================
   值羽科技 · 官网样式
   设计语言基于 DESIGN.md（DJI Analysis）
   ========================================================= */

:root {
  /* Brand & accent */
  --primary: #0070d5;
  --store-blue: #0060ef;
  --on-primary: #ffffff;
  --link-blue: #1890ff;
  --tier-orange: #be4e04;

  /* Surfaces */
  --canvas: #ffffff;
  --canvas-soft: #f7f9fa;
  --panel: #f6f8f9;
  --fog: #f5f5f5;
  --announce: #fafafa;
  --footer: #272727;
  --footer-divider: #414141;

  /* Text */
  --ink: #262626;
  --ink-secondary: #595959;
  --ink-tertiary: #8c8c8c;
  --store-ink: #333333;
  --graphite: #3b3e40;
  --nav-ink: #303233;
  --slate: #6c7073;
  --steel: #9fa3a6;
  --footer-link: #b3b3b3;

  /* Lines */
  --hairline: #f0f0f0;
  --divider: #e8e8e8;
  --card-border: #d9d9d9;

  /* Shape */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-xl: 60px;
  --radius-pill: 100px;
  --radius-full: 9999px;

  /* Misc */
  --font: "Open Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --shadow-float: 0 8px 16px rgba(0, 0, 0, 0.10);
  --shadow-soft: 0 8px 24px rgba(9, 28, 54, 0.08);
  --header-h: 64px;
}

/* ===== Reset & base ===== */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
  overflow-x: clip;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: -0.32px;
  color: var(--ink);
  background: var(--canvas);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

h1, h2, h3, h4, p, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; color: inherit; }
svg { display: block; }
img { max-width: 100%; height: auto; }

::selection { background: rgba(0, 112, 213, 0.14); }

:focus-visible {
  outline: 2px solid var(--link-blue);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 0;
  left: 12px;
  z-index: 1000;
  padding: 10px 16px;
  background: var(--canvas);
  color: var(--ink);
  font-size: 14px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-float);
  transform: translateY(-130%);
  transition: transform 0.2s ease;
}
.skip-link:focus-visible { transform: translateY(12px); }

.container {
  width: min(1200px, 100% - 48px);
  margin-inline: auto;
}

/* ===== Shared type & links ===== */
.eyebrow {
  font-size: 12px;
  font-weight: 600;
  line-height: 1.33;
  letter-spacing: -0.24px;
  color: var(--ink-tertiary);
}
.eyebrow--tier { color: var(--tier-orange); }

.break-mobile { display: inline; }

.display {
  margin-top: 12px;
  font-size: clamp(30px, 3.4vw, 40px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -1.2px;
  color: var(--ink);
  text-wrap: balance;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -0.32px;
  color: var(--link-blue);
  transition: opacity 0.2s ease;
}
.card-link:hover { opacity: 0.72; }

.section-head {
  max-width: 720px;
  margin: 0 auto 48px;
  text-align: center;
}
.section-head__desc {
  margin-top: 16px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-secondary);
}

.section { padding: 80px 0; }
.section--services { background: var(--canvas-soft); }
.section--products { background: var(--canvas); }
.section--about { background: var(--canvas); padding-top: 0; }
.section--process { background: var(--canvas-soft); }
.section--contact { background: var(--canvas); padding: 96px 0 112px; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 40px;
  padding: 0 16px;
  border: 0;
  border-radius: var(--radius-full);
  background: transparent;
  font-family: inherit;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.32px;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, opacity 0.2s ease;
}
.btn--primary { background: var(--primary); color: var(--on-primary); }
.btn--primary:hover { background: #0062bb; }
.btn--outline {
  border: 1px solid var(--ink);
  color: var(--ink);
  padding: 0 15px;
}
.btn--outline:hover { background: var(--ink); color: var(--on-primary); }
.btn--ghost {
  height: 32px;
  padding: 5px 16px;
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: 64px;
  color: var(--on-primary);
  font-size: 14px;
  letter-spacing: -0.28px;
}
.btn--ghost:hover { background: rgba(255, 255, 255, 0.14); border-color: #fff; }
.btn--nav { height: 32px; padding: 0 16px; font-size: 14px; letter-spacing: -0.28px; }
.btn--lg { height: 48px; padding: 14px 32px; }

/* ===== Announcement bar ===== */
.announcement {
  background: var(--announce);
  border-bottom: 1px solid var(--hairline);
}
.announcement__inner {
  position: relative;
  min-height: 36px;
  padding: 8px 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 14px;
  letter-spacing: -0.28px;
}
.announcement__text { color: var(--ink-secondary); }
.announcement__link {
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 2px;
  white-space: nowrap;
}
.announcement__close {
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 0;
  background: none;
  color: var(--ink-tertiary);
  cursor: pointer;
  border-radius: 50%;
}
.announcement__close:hover { color: var(--ink); }
.announcement__close svg { width: 14px; height: 14px; }
.announcement[hidden] { display: none; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  color: #ffffff;
  background: transparent;
  transition: background-color 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}
.site-header.is-scrolled,
.site-header.is-open {
  background: var(--canvas);
  color: var(--nav-ink);
  box-shadow: inset 0 -1px 0 var(--divider);
}
.header__inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 32px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand__mark {
  flex: none;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: var(--on-primary);
  display: grid;
  place-items: center;
}
.brand__mark svg { width: 22px; height: 22px; }
.brand__text { display: flex; flex-direction: column; gap: 3px; }
.brand__name {
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.32px;
}
.brand__en {
  font-size: 9px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0;
  opacity: 0.6;
}

.nav { display: flex; align-items: center; gap: 32px; }
.nav__link {
  position: relative;
  padding: 10px 0;
  font-size: 14px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.28px;
  opacity: 0.82;
  transition: opacity 0.2s ease;
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 0;
  height: 1.5px;
  background: currentColor;
  transition: width 0.22s ease;
}
.nav__link:hover { opacity: 1; }
.nav__link:hover::after { width: 100%; }

.header__actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
}
.nav-toggle span {
  width: 20px;
  height: 1.6px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.site-header.is-open .nav-toggle span:nth-child(1) { transform: translateY(6.6px) rotate(45deg); }
.site-header.is-open .nav-toggle span:nth-child(2) { opacity: 0; }
.site-header.is-open .nav-toggle span:nth-child(3) { transform: translateY(-6.6px) rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  position: relative;
  margin-top: calc(-1 * var(--header-h));
  background: #06101d;
  color: #ffffff;
  overflow: hidden;
}
.hero__slides { display: grid; }

.hero__slide {
  grid-area: 1 / 1;
  position: relative;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.7s ease, visibility 0s linear 0.7s;
}
.hero__slide.is-active {
  opacity: 1;
  visibility: visible;
  z-index: 1;
  transition: opacity 0.7s ease;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 90% at 78% 12%, rgba(38, 120, 220, 0.38), transparent 56%),
    radial-gradient(90% 80% at 8% 94%, rgba(16, 76, 156, 0.35), transparent 62%),
    linear-gradient(152deg, #050b14 0%, #081829 46%, #0a2038 100%);
}
.hero__bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(82% 72% at 50% 38%, #000 28%, transparent 100%);
  mask-image: radial-gradient(82% 72% at 50% 38%, #000 28%, transparent 100%);
}
.hero__bg::after {
  content: "";
  position: absolute;
  width: 640px;
  height: 640px;
  right: -180px;
  top: -220px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}

.hero__slide[data-variant="dbg"] .hero__bg {
  background:
    radial-gradient(95% 80% at 22% 10%, rgba(22, 112, 214, 0.36), transparent 56%),
    radial-gradient(80% 70% at 90% 90%, rgba(10, 68, 146, 0.42), transparent 62%),
    linear-gradient(160deg, #040a13 0%, #0a1c31 55%, #0c2440 100%);
}
.hero__slide[data-variant="ddz"] .hero__bg {
  background:
    radial-gradient(100% 82% at 76% 16%, rgba(44, 96, 220, 0.34), transparent 58%),
    radial-gradient(86% 74% at 10% 90%, rgba(18, 58, 140, 0.4), transparent 60%),
    linear-gradient(148deg, #050a16 0%, #0a1730 50%, #101d3d 100%);
}

.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  align-items: center;
  gap: 48px;
  padding-top: 120px;
  padding-bottom: 112px;
}

.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.33;
  letter-spacing: -0.24px;
  color: rgba(255, 255, 255, 0.62);
}
.hero__eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: currentColor;
  opacity: 0.7;
}

.hero__title {
  margin-top: 18px;
  font-size: clamp(36px, 4.4vw, 48px);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -1.44px;
  color: #ffffff;
  text-wrap: balance;
}

.hero__desc {
  margin-top: 20px;
  max-width: 480px;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: -0.32px;
  color: rgba(255, 255, 255, 0.7);
}

.hero__actions {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero__visual {
  position: relative;
  min-height: 560px;
  display: grid;
  place-items: center;
}
.hero__visual::before {
  content: "";
  position: absolute;
  width: min(460px, 90%);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 112, 213, 0.4), transparent 66%);
  filter: blur(6px);
}

/* Hero controls */
.hero__controls {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 24px;
  z-index: 5;
}
.hero__controls-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.hero__dots { display: flex; align-items: center; gap: 4px; }
.hero__dot {
  width: 30px;
  height: 24px;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  display: grid;
  place-items: center;
}
.hero__dot::after {
  content: "";
  width: 26px;
  height: 3px;
  background: rgba(255, 255, 255, 0.26);
  transition: background-color 0.25s ease;
}
.hero__dot:hover::after { background: rgba(255, 255, 255, 0.55); }
.hero__dot.is-active::after { background: #ffffff; }

.hero__pager { display: flex; align-items: center; gap: 12px; }
.hero__count {
  font-size: 12px;
  letter-spacing: -0.24px;
  color: rgba(255, 255, 255, 0.65);
  margin-right: 4px;
}
.hero__arrow {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}
.hero__arrow:hover { background: rgba(255, 255, 255, 0.16); border-color: rgba(255, 255, 255, 0.55); }
.hero__arrow svg { width: 16px; height: 16px; }

/* ===== Floating chips ===== */
.float-chip {
  position: absolute;
  z-index: 4;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 152px;
  padding: 9px 13px;
  border-radius: var(--radius-sm);
  background: var(--canvas);
  color: var(--ink);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.22), 0 2px 6px rgba(0, 0, 0, 0.08);
  white-space: nowrap;
}
.float-chip__k {
  font-size: 10px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.2px;
  color: var(--ink-tertiary);
}
.float-chip strong {
  font-size: 12px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.24px;
  color: var(--ink);
}

/* ===== Laptop mockup ===== */
.laptop-wrap { position: relative; width: min(460px, 100%); }
.laptop-wrap .float-chip--a { left: -8%; bottom: 6%; }
.laptop-wrap .float-chip--b { right: -6%; top: 10%; }

.laptop { transform: rotate(-2deg); }
.laptop__screen {
  padding: 10px;
  border-radius: 16px;
  background: linear-gradient(155deg, #454d59 0%, #1a2029 30%, #0b0f16 100%);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 50px 90px rgba(0, 0, 0, 0.55);
}
.laptop__display {
  display: flex;
  flex-direction: column;
  min-height: 262px;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  background: #080d15;
}
.laptop__bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.laptop__bar .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
}
.laptop__bar em {
  margin-left: auto;
  font-style: normal;
  font-size: 9px;
  letter-spacing: 0;
  color: rgba(255, 255, 255, 0.35);
}
.laptop__body { display: grid; grid-template-columns: 1.6fr 0.85fr; flex: 1; }
.editor {
  padding: 14px 12px 18px;
  overflow: hidden;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10.5px;
  line-height: 2;
  letter-spacing: 0;
  color: rgba(255, 255, 255, 0.78);
}
.code-line { display: flex; gap: 10px; white-space: pre; }
.ln { width: 12px; flex: none; color: rgba(255, 255, 255, 0.22); text-align: right; }
.tok-indent { padding-left: 14px; }
.tok-key { color: #7fb2f0; }
.tok-fn { color: #dce9ff; }
.tok-str { color: #9cc9ff; }

.side-panel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px 12px;
  border-left: 1px solid rgba(255, 255, 255, 0.07);
}
.side-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 9px;
  letter-spacing: -0.18px;
  color: rgba(255, 255, 255, 0.6);
}
.side-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #4b8ef0;
  box-shadow: 0 0 8px rgba(75, 142, 240, 0.8);
}
.side-dot--soft { background: rgba(255, 255, 255, 0.28); box-shadow: none; }
.side-progress {
  height: 4px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
}
.side-progress i {
  display: block;
  width: 78%;
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, #0070d5, #66b2ff);
}
.side-tags { display: flex; flex-wrap: wrap; gap: 4px; }
.side-tags span {
  padding: 2px 5px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-full);
  font-size: 8px;
  letter-spacing: -0.16px;
  color: rgba(255, 255, 255, 0.6);
}
.side-row--muted { margin-top: auto; }

.laptop__base {
  position: relative;
  width: 112%;
  height: 12px;
  margin-left: -6%;
  border-radius: 0 0 14px 14px;
  background: linear-gradient(180deg, #c9d0d7, #8f979f);
  box-shadow: 0 18px 26px rgba(0, 0, 0, 0.35);
}
.laptop__base::after {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 76px;
  height: 5px;
  border-radius: 0 0 8px 8px;
  background: #aab2ba;
}

/* ===== Phone mockup ===== */
.phone-wrap { position: relative; display: grid; place-items: center; }
.phone-wrap .float-chip--a { left: -46%; top: 14%; }
.phone-wrap .float-chip--b { right: -44%; bottom: 16%; }

.phone {
  position: relative;
  flex: none;
  width: 268px;
  height: 536px;
  padding: 10px;
  border-radius: 46px;
  background: linear-gradient(150deg, #4a525d 0%, #20262f 22%, #0a0e14 100%);
  box-shadow:
    0 40px 80px rgba(2, 10, 25, 0.55),
    inset 0 0 0 1px rgba(255, 255, 255, 0.16),
    inset 0 0 28px rgba(255, 255, 255, 0.06);
  transform: rotate(2deg);
}
.phone::before {
  content: "";
  position: absolute;
  left: -2px;
  top: 118px;
  width: 2px;
  height: 38px;
  border-radius: 2px;
  background: #2a3038;
}
.phone--ddz { transform: rotate(-2deg); }

.phone__screen {
  position: relative;
  width: 100%;
  height: 100%;
  padding: 28px 18px 16px;
  border-radius: 36px;
  background: #ffffff;
  color: var(--ink);
  overflow: hidden;
}
.phone--ddz .phone__screen {
  background: linear-gradient(180deg, #f8fafc 0%, #eef4fb 100%);
}
.phone__island {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 74px;
  height: 20px;
  border-radius: var(--radius-full);
  background: #0a0e14;
  z-index: 2;
}

.app-top {
  margin-top: 9px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: -0.24px;
  line-height: 1.3;
}
.app-dot {
  width: 18px;
  height: 18px;
  border-radius: 6px;
  background: var(--primary);
  flex: none;
}
.app-tag {
  margin-left: auto;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  background: #eef3f9;
  color: var(--ink-secondary);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: -0.18px;
}
.app-tag--ai { background: var(--primary); color: #ffffff; }

.app-balance { margin-top: 18px; }
.app-label {
  display: block;
  font-size: 10px;
  letter-spacing: -0.2px;
  color: var(--ink-tertiary);
}
.app-amount {
  display: block;
  margin-top: 2px;
  font-size: 24px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.48px;
  color: var(--ink);
}
.app-delta {
  display: block;
  margin-top: 2px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: -0.2px;
  color: var(--primary);
}

.donut {
  width: 140px;
  height: 140px;
  margin: 16px auto 12px;
  border-radius: 50%;
  background: conic-gradient(var(--primary) 0 45%, #6aa8e8 45% 73%, #cde1f8 73% 100%);
  display: grid;
  place-items: center;
}
.donut__hole {
  width: 98px;
  height: 98px;
  border-radius: 50%;
  background: #ffffff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
}
.donut__hole em {
  font-style: normal;
  font-size: 9px;
  letter-spacing: -0.18px;
  color: var(--ink-tertiary);
}
.donut__hole strong {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.28px;
  color: var(--ink);
}

.legend li {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 4px 0;
  font-size: 10px;
  letter-spacing: -0.2px;
  color: var(--ink-secondary);
}
.legend b { margin-left: auto; font-size: 10px; font-weight: 600; color: var(--ink); }
.swatch { width: 8px; height: 8px; border-radius: 50%; flex: none; }
.swatch--a { background: var(--primary); }
.swatch--b { background: #6aa8e8; }
.swatch--c { background: #cde1f8; }

.app-cta {
  margin-top: 12px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-full);
  background: var(--primary);
  color: #ffffff;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: -0.22px;
}
.app-foot {
  margin-top: 8px;
  text-align: center;
  font-size: 8px;
  letter-spacing: 0;
  color: var(--ink-tertiary);
}

/* 帮斗助手 phone */
.ddz-table {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.ddz-opponents { display: flex; justify-content: center; gap: 6px; }
.cardback {
  width: 26px;
  height: 38px;
  border-radius: 4px;
  background: repeating-linear-gradient(45deg, #0a5cb8 0 4px, #0070d5 4px 8px);
  border: 1px solid rgba(255, 255, 255, 0.55);
  box-shadow: 0 2px 5px rgba(20, 50, 90, 0.18);
}
.ddz-status {
  text-align: center;
  font-size: 9px;
  letter-spacing: 0;
  color: var(--ink-tertiary);
}
.ai-bubble {
  display: flex;
  gap: 8px;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid #e2ebf5;
  background: #ffffff;
  box-shadow: 0 4px 10px rgba(20, 50, 90, 0.05);
  font-size: 10px;
  line-height: 1.65;
  letter-spacing: -0.2px;
  color: var(--ink);
}
.ai-badge {
  flex: none;
  width: 18px;
  height: 18px;
  display: grid;
  place-items: center;
  border-radius: 5px;
  background: var(--primary);
  color: #ffffff;
  font-size: 8px;
  font-weight: 600;
}
.ddz-hand { display: flex; justify-content: center; gap: 4px; margin-top: 2px; }
.pcard {
  width: 40px;
  height: 58px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
  border-radius: 5px;
  border: 1px solid #dfe6ee;
  background: #ffffff;
  box-shadow: 0 4px 8px rgba(20, 50, 90, 0.07);
  color: var(--ink);
}
.pcard b { font-size: 17px; font-weight: 600; line-height: 1; letter-spacing: -0.34px; }
.pcard i { font-style: normal; font-size: 11px; line-height: 1; }
.pcard i.is-red { color: #d4380d; }
.pcard--joker { background: var(--ink); border-color: var(--ink); color: #ffffff; }
.pcard--joker i { font-size: 5px; letter-spacing: 0.2px; color: rgba(255, 255, 255, 0.7); }

.meter {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
  font-size: 9px;
  letter-spacing: -0.18px;
  color: var(--ink-secondary);
}
.meter__bar {
  flex: 1;
  height: 5px;
  border-radius: var(--radius-full);
  background: #e3eaf3;
  overflow: hidden;
}
.meter__bar i {
  display: block;
  width: 68%;
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, #0070d5, #5aa1ea);
}
.meter strong { font-size: 11px; font-weight: 600; color: var(--primary); }

/* ===== Services ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.service-card {
  display: flex;
  flex-direction: column;
  min-height: 300px;
  padding: 32px;
  background: var(--canvas);
  border: 1px solid var(--hairline);
}
.service-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}
.service-card__num {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: -0.24px;
  color: var(--tier-orange);
}
.service-card__icon { color: var(--primary); }
.service-card__icon svg { width: 26px; height: 26px; }
.service-card__title {
  margin-top: 28px;
  font-size: 20px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0;
  color: var(--ink);
}
.service-card__desc {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.75;
  letter-spacing: -0.28px;
  color: var(--ink-secondary);
}
.service-card .card-link {
  margin-top: auto;
  padding-top: 28px;
  font-size: 14px;
  letter-spacing: -0.28px;
}

/* ===== Products ===== */
.product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.product-tile {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 640px;
  overflow: hidden;
  background: var(--fog);
}
.product-tile__body {
  padding: 48px 40px 8px;
  text-align: center;
}
.product-tile__name {
  margin-top: 12px;
  font-size: clamp(26px, 2.4vw, 32px);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0;
  color: var(--ink);
  text-wrap: balance;
}
.product-tile__desc {
  max-width: 400px;
  margin: 12px auto 0;
  font-size: 14px;
  line-height: 1.75;
  letter-spacing: -0.28px;
  color: var(--ink-secondary);
}
.product-tile__body .card-link { margin-top: 16px; }

.product-tile__media {
  position: relative;
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 420px;
  margin-top: 24px;
  padding: 36px 24px 0;
  overflow: hidden;
  background:
    radial-gradient(90% 80% at 50% 100%, #e6ebef 0%, rgba(245, 245, 245, 0) 70%),
    linear-gradient(180deg, #f5f5f5, #eef1f4);
}
.tile-chip {
  position: absolute;
  top: 28px;
  right: 24px;
  z-index: 3;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: var(--canvas);
  box-shadow: var(--shadow-soft);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: -0.22px;
  color: var(--ink);
}
.phone--tile {
  width: 252px;
  height: 504px;
  transform: rotate(-3deg) translateY(48px);
  box-shadow:
    0 30px 60px rgba(20, 45, 80, 0.22),
    inset 0 0 0 1px rgba(255, 255, 255, 0.14);
}
.phone--ddz.phone--tile { transform: rotate(3deg) translateY(48px); }

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 64px;
}
.about-copy .eyebrow { margin-bottom: 0; }
.about-copy .display { margin-top: 12px; }
.about-copy p {
  max-width: 560px;
  margin-top: 20px;
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: -0.32px;
  color: var(--ink-secondary);
}

.info-panel {
  padding: 6px 24px;
  border-radius: var(--radius-sm);
  background: var(--panel);
}
.info-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 0;
  border-bottom: 1px solid var(--divider);
}
.info-row:last-child { border-bottom: 0; }
.info-row span {
  flex: none;
  font-size: 12px;
  letter-spacing: -0.24px;
  color: var(--steel);
}
.info-row strong,
.info-row a {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.28px;
  line-height: 1.6;
  color: var(--ink);
  text-align: right;
  word-break: break-word;
}
.info-row a { color: var(--primary); }
.info-row a:hover { text-decoration: underline; }
.info-sep { color: var(--ink-tertiary); }

/* ===== Process ===== */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--divider);
}
.step__num {
  display: block;
  font-size: 40px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -1.2px;
  color: var(--ink);
}
.step h3 {
  margin-top: 14px;
  font-size: 20px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0;
  color: var(--ink);
}
.step p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  letter-spacing: -0.28px;
  color: var(--ink-secondary);
}

/* ===== Contact ===== */
.contact__inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}
.contact__title {
  margin-top: 14px;
  font-size: clamp(34px, 4vw, 48px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -1.44px;
  color: var(--ink);
  text-wrap: balance;
}
.contact__desc {
  margin-top: 16px;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: -0.32px;
  color: var(--ink-secondary);
}
.contact__inner .btn { margin-top: 32px; max-width: 100%; }
.contact__note {
  margin-top: 20px;
  font-size: 12px;
  letter-spacing: -0.24px;
  color: var(--ink-tertiary);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--footer);
  color: var(--footer-link);
  padding: 56px 0 24px;
}
.footer__top {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1fr;
  gap: 40px;
}
.brand--footer .brand__name { color: #ffffff; }
.brand--footer .brand__en { color: rgba(255, 255, 255, 0.45); opacity: 1; }
.footer__brand p {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.9;
  letter-spacing: -0.28px;
  color: var(--footer-link);
}
.footer__mail {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
  letter-spacing: -0.28px;
  color: #ffffff;
}
.footer__mail:hover { text-decoration: underline; }

.footer__col h3 {
  margin-bottom: 4px;
  font-size: 12px;
  font-weight: 500;
  line-height: 2;
  letter-spacing: 0;
  color: #ffffff;
}
.footer__col a,
.footer__col p {
  display: block;
  font-size: 14px;
  line-height: 2.2;
  letter-spacing: -0.28px;
  color: var(--footer-link);
}
.footer__col a:hover { color: #ffffff; }

.footer__legal {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--footer-divider);
  font-size: 12px;
  letter-spacing: -0.24px;
  color: var(--steel);
}
.footer__legal a:hover { color: #ffffff; }

/* ===== Back to top ===== */
.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid var(--divider);
  border-radius: 50%;
  background: var(--canvas);
  color: var(--ink);
  box-shadow: var(--shadow-float);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top svg { width: 16px; height: 16px; }

/* ===== Reveal on scroll ===== */
.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s cubic-bezier(0.2, 0.6, 0.2, 1), transform 0.7s cubic-bezier(0.2, 0.6, 0.2, 1);
}
.js .reveal.is-visible { opacity: 1; transform: none; }
.services-grid .reveal:nth-child(2),
.product-grid .reveal:nth-child(2),
.steps .reveal:nth-child(2) { transition-delay: 0.08s; }
.services-grid .reveal:nth-child(3),
.steps .reveal:nth-child(3) { transition-delay: 0.16s; }
.steps .reveal:nth-child(4) { transition-delay: 0.24s; }

/* ===== Responsive ===== */
@media (max-width: 1100px) {
  .hero .float-chip { display: none; }
}

@media (max-width: 1024px) {
  .hero__inner { gap: 32px; }
  .hero__title { font-size: clamp(34px, 4.6vw, 46px); }
  .laptop-wrap { width: 100%; }
}

@media (max-width: 900px) {
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 24px 16px;
    background: var(--canvas);
    border-bottom: 1px solid var(--divider);
    box-shadow: 0 16px 24px rgba(0, 0, 0, 0.06);
  }
  .site-header.is-open .nav { display: flex; }
  .nav__link {
    padding: 15px 0;
    font-size: 16px;
    color: var(--nav-ink);
    opacity: 1;
    border-bottom: 1px solid var(--hairline);
  }
  .nav__link:last-child { border-bottom: 0; }
  .nav__link::after { display: none; }
  .nav-toggle { display: flex; }

  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 8px;
    padding-top: 112px;
    padding-bottom: 112px;
  }
  .hero__copy {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .hero__desc { max-width: 560px; }
  .hero__visual { min-height: 0; margin-top: 32px; }
  .hero .float-chip { display: none; }

  .section { padding: 64px 0; }
  .section--about { padding-top: 0; }
  .section--contact { padding: 72px 0 88px; }
  .section-head { margin-bottom: 32px; }

  .services-grid,
  .product-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .steps { grid-template-columns: 1fr 1fr; gap: 32px 24px; }

  .footer__top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .container { width: calc(100% - 32px); }

  .announcement__inner {
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 2px 10px;
    padding: 8px 36px 8px 0;
    min-height: 40px;
  }
  .announcement__text { font-size: 12px; line-height: 1.6; }
  .announcement__link { font-size: 12px; }

  .header__inner { gap: 16px; }

  .hero__inner { padding-top: 104px; padding-bottom: 104px; }
  .hero__title { font-size: clamp(32px, 8.4vw, 40px); letter-spacing: -1.1px; }
  .hero__desc { font-size: 15px; line-height: 1.7; }
  .hero__actions { gap: 10px; }
  .hero__visual { margin-top: 24px; }
  .laptop-wrap { width: 92%; }
  .hero__controls { bottom: 20px; }

  .display { letter-spacing: -0.96px; }
  .section-head__desc { font-size: 15px; }

  .service-card { min-height: 0; padding: 24px; }
  .service-card__title { margin-top: 20px; }
  .service-card .card-link { padding-top: 20px; }

  .product-tile { min-height: 0; }
  .product-tile__body { padding: 40px 24px 8px; }
  .product-tile__media { min-height: 380px; margin-top: 20px; padding-top: 32px; }
  .tile-chip { top: 20px; right: 16px; }

  .break-mobile { display: block; }

  .info-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 14px 0;
  }
  .info-row strong,
  .info-row a { text-align: left; }

  .contact__inner .btn--lg {
    height: 48px;
    padding: 14px 20px;
    font-size: 14px;
    letter-spacing: -0.28px;
  }

  .footer__top { gap: 28px; }
  .site-footer { padding-top: 48px; }
  .footer__legal { flex-direction: column; gap: 6px; }

  .to-top { right: 16px; bottom: 16px; }
}

@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; gap: 28px; }
  .step { display: grid; grid-template-columns: auto 1fr; column-gap: 16px; align-items: baseline; }
  .step__num { grid-row: span 2; font-size: 32px; }
  .step h3 { margin-top: 0; }
  .step p { margin-top: 4px; }
}

@media (max-width: 400px) {
  .announcement__text { font-size: 11px; }
  .btn--nav { padding: 0 12px; font-size: 13px; }
  .brand__en { display: none; }
  .product-tile__name { font-size: 26px; }
}

@media (max-width: 360px) {
  .contact__inner .btn--lg { font-size: 12px; padding: 14px 14px; }
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
  .hero__slide { transition: none; }
}