/* ==========================================================================
   开镜 KAIJING · brand surface
   ========================================================================== */

section[id] {
  scroll-margin-top: 100px;
}

.site {
  background:
    radial-gradient(1200px 700px at 78% -10%, rgba(240, 208, 186, 0.38), transparent 62%),
    var(--paper);
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--surface);
  font-size: 13px;
  transform: translateY(-200%);
  transition: transform 0.3s var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
}

/* ---------------------------------- nav ----------------------------------- */
.nav {
  position: fixed;
  top: 18px;
  left: 50%;
  z-index: 80;
  width: min(1240px, calc(100% - 32px));
  transform: translateX(-50%);
  border-radius: 999px;
  border: 1px solid transparent;
  transition:
    background 0.5s var(--ease),
    border-color 0.5s var(--ease),
    box-shadow 0.5s var(--ease),
    width 0.5s var(--ease);
}

.nav.is-scrolled,
.nav.is-open {
  background: rgba(255, 253, 248, 0.78);
  border-color: var(--line);
  box-shadow: 0 18px 50px -36px rgba(51, 39, 26, 0.45);
  backdrop-filter: blur(18px) saturate(1.1);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 64px;
  padding: 0 10px 0 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  border-radius: 999px;
}

.brand img {
  border-radius: 10px;
  box-shadow: 0 6px 18px -10px rgba(27, 28, 24, 0.5);
}

.brand-cn {
  font-size: 17px;
  font-weight: 640;
  letter-spacing: 0.08em;
}

.brand-en {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.2em;
  color: var(--ink-3);
  margin-left: 1px;
  transform: translateY(1px);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-left: 18px;
}

.nav-links a {
  position: relative;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink-2);
  white-space: nowrap;
  padding: 6px 0;
  transition: color 0.3s var(--ease);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.45s var(--spring);
}

.nav-links a:hover {
  color: var(--ink);
}

.nav-links a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-preview {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--ink-3);
  font-size: 12.5px;
  font-weight: 500;
  white-space: nowrap;
  transition: color 0.3s var(--ease), background 0.3s var(--ease);
}

.nav-preview:hover {
  color: var(--ink);
  background: var(--line-soft);
}

.nav-cta {
  min-height: 44px;
  padding-left: 19px;
}

.menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.5);
  place-items: center;
  position: relative;
}

.menu-btn span {
  position: absolute;
  left: 13px;
  width: 18px;
  height: 1.5px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform 0.45s var(--spring), top 0.45s var(--spring);
}

.menu-btn span:first-child { top: 18px; }
.menu-btn span:last-child { top: 25px; }
.menu-btn[aria-expanded="true"] span:first-child { top: 22px; transform: rotate(45deg); }
.menu-btn[aria-expanded="true"] span:last-child { top: 22px; transform: rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 75;
  background: rgba(245, 242, 234, 0.98);
  backdrop-filter: blur(20px);
  opacity: 0;
  transform: translateY(-12px);
  transition: opacity 0.4s var(--ease), transform 0.5s var(--spring);
}

.mobile-menu.is-open {
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu-inner {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  padding: 110px var(--pad-x) 34px;
}

.mobile-menu-inner > .mono {
  color: var(--ink-3);
  margin-bottom: 24px;
}

.mobile-menu nav {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.mobile-menu nav a {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  font-size: clamp(1.5rem, 5vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.035em;
  font-weight: 520;
}

.mobile-menu nav a span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--ink-4);
}

.mobile-menu .btn {
  margin-top: 32px;
  justify-content: space-between;
}

.mobile-menu-foot {
  margin-top: auto;
  padding-top: 28px;
  font-size: 12px;
  color: var(--ink-3);
}

body.menu-open {
  overflow: hidden;
}

/* ---------------------------------- hero ---------------------------------- */
.hero {
  position: relative;
  padding: calc(var(--nav-h) + 76px) 0 30px;
  overflow: clip;
}

.hero-aura {
  position: absolute;
  top: -220px;
  right: -180px;
  width: min(900px, 70vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(239, 200, 175, 0.5), rgba(245, 242, 234, 0) 67%);
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  align-items: center;
  gap: clamp(28px, 5vw, 76px);
}

.hero-copy {
  padding-top: 10px;
}

.hero-title {
  margin: 24px 0 0;
  font-size: clamp(3.9rem, 7.1vw, 6.7rem);
  font-weight: 540;
  line-height: 0.96;
  letter-spacing: -0.055em;
  overflow-wrap: anywhere;
}

.hero-em {
  position: relative;
  display: inline-block;
  color: var(--accent-deep);
  padding-right: 0.06em;
}

.hero-em .underline {
  position: absolute;
  left: 0.04em;
  bottom: -0.06em;
  width: 94%;
  height: 0.18em;
  color: rgba(188, 76, 44, 0.42);
  overflow: visible;
}

.hero-lead {
  max-width: 560px;
  margin: 30px 0 0;
  color: var(--ink-2);
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 22px;
  margin-top: 34px;
}

.hero-cta {
  min-height: 58px;
  padding-left: 28px;
  font-size: 15px;
}

.hero-cta .btn-arrow {
  width: 42px;
  height: 42px;
  background: rgba(255, 253, 248, 0.12);
}

.hero-play {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  font-weight: 550;
  color: var(--ink-2);
  min-height: 44px;
}

.play-ring {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: rgba(255, 253, 248, 0.45);
  transition: background 0.35s var(--ease), transform 0.45s var(--spring);
}

.play-ring .icon {
  width: 13px;
  height: 13px;
  transform: translateX(1px);
}

.hero-play:hover .play-ring {
  background: var(--surface);
  transform: scale(1.06);
}

.hero-play .mono {
  color: var(--ink-4);
  font-size: 9.5px;
}

.hero-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  max-width: 560px;
}

.hero-notes li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12.5px;
  color: var(--ink-3);
  white-space: nowrap;
}

.hero-notes .icon {
  color: var(--sage-deep);
  width: 14px;
  height: 14px;
}

/* hero visual */
.hero-stage {
  position: relative;
  min-width: 0;
  transform-style: preserve-3d;
}

.hero-art-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1.08;
  border-radius: clamp(28px, 3vw, 42px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  background:
    radial-gradient(circle at 70% 18%, rgba(255, 255, 255, 0.8), transparent 45%),
    var(--surface-2);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.85) inset,
    0 50px 100px -55px rgba(73, 51, 35, 0.55),
    0 0 0 10px rgba(255, 253, 248, 0.22);
}

.hero-art-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px rgba(27, 28, 24, 0.04);
  pointer-events: none;
}

.hero-art {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform 1.2s var(--spring);
}

.hero-stage:hover .hero-art {
  transform: scale(1.045);
}

.art-stamp {
  position: absolute;
  left: 22px;
  bottom: 20px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.22em;
  color: rgba(27, 28, 24, 0.45);
}

.float-card {
  position: absolute;
  z-index: 2;
  padding: 14px 16px 15px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  background: rgba(255, 253, 248, 0.86);
  backdrop-filter: blur(16px) saturate(1.1);
  box-shadow: 0 24px 60px -40px rgba(51, 39, 26, 0.65);
  transition: transform 0.7s var(--spring);
}

.float-hot {
  top: -16px;
  right: -14px;
  width: 232px;
}

.float-plan {
  left: -26px;
  bottom: 34px;
  width: 244px;
}

.float-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 9px;
}

.float-head .mono {
  font-size: 8.5px;
  color: var(--ink-4);
  letter-spacing: 0.16em;
}

.float-icon {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 8px;
}

.float-icon .icon {
  width: 13px;
  height: 13px;
}

.accent-bg { background: var(--accent-soft); color: var(--accent-deep); }
.sage-bg { background: var(--sage-soft); color: var(--sage-deep); }

.float-up {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--sage-deep);
  background: var(--sage-soft);
  padding: 3px 7px;
  border-radius: 999px;
}

.float-hot > p {
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.mini-bars {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 24px;
  margin-top: 10px;
}

.mini-bars i {
  flex: 1;
  border-radius: 3px 3px 1px 1px;
  background: var(--accent);
  opacity: 0.28;
}

.mini-bars i:nth-child(1) { height: 26%; }
.mini-bars i:nth-child(2) { height: 32%; }
.mini-bars i:nth-child(3) { height: 30%; }
.mini-bars i:nth-child(4) { height: 43%; }
.mini-bars i:nth-child(5) { height: 39%; }
.mini-bars i:nth-child(6) { height: 55%; }
.mini-bars i:nth-child(7) { height: 62%; }
.mini-bars i:nth-child(8) { height: 58%; }
.mini-bars i:nth-child(9) { height: 76%; }
.mini-bars i:nth-child(10) { height: 92%; opacity: 0.85; }

.float-line {
  font-size: 14.5px;
  line-height: 1.55;
  font-weight: 550;
  letter-spacing: -0.015em;
}

.float-meta {
  display: flex;
  gap: 6px;
  margin-top: 11px;
}

.float-meta span {
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--surface-3);
  font-size: 9.5px;
  color: var(--ink-3);
}

.float-chip {
  position: absolute;
  right: 18px;
  bottom: -18px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--ink);
  color: rgba(255, 253, 248, 0.92);
  font-size: 11px;
  font-weight: 500;
  box-shadow: 0 20px 44px -28px rgba(27, 28, 24, 0.8);
}

.pulse-dot {
  position: relative;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex: 0 0 auto;
}

.pulse-dot::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid currentColor;
  opacity: 0.4;
  animation: pulse 2.4s var(--ease) infinite;
}

@keyframes pulse {
  0% { transform: scale(0.6); opacity: 0.6; }
  70%, 100% { transform: scale(1.5); opacity: 0; }
}

.hero-stage:hover .float-hot { transform: translate3d(0, -4px, 0); }
.hero-stage:hover .float-plan { transform: translate3d(0, 3px, 0); }

.hero-foot {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 30px;
  margin-top: clamp(54px, 7vw, 84px);
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.hero-foot-label {
  font-size: 11.5px;
  color: var(--ink-4);
  white-space: nowrap;
}

.industry-rail {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.industry-rail span {
  font-size: 12px;
  color: var(--ink-2);
  white-space: nowrap;
}

.industry-rail span + span::before {
  content: "·";
  color: var(--ink-4);
  margin-right: 20px;
}

.platform-rail {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  font-size: 10.5px;
  color: var(--ink-4);
  white-space: nowrap;
}

.platform-rail b {
  font-weight: 500;
  color: var(--ink-2);
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.4);
}

/* --------------------------------- sections -------------------------------- */
.section {
  padding: clamp(92px, 11vw, 158px) 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: clamp(30px, 6vw, 90px);
  margin-bottom: clamp(48px, 6vw, 78px);
}

.section-head .h2 {
  margin-top: 18px;
}

.section-head-copy {
  max-width: 370px;
  padding-bottom: 8px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-3);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 550;
  color: var(--accent-deep);
  white-space: nowrap;
  border-bottom: 1px solid rgba(188, 76, 44, 0.25);
  padding-bottom: 2px;
  transition: gap 0.4s var(--spring), border-color 0.3s var(--ease);
}

.text-link:hover {
  gap: 12px;
  border-color: var(--accent-deep);
}

/* ---------------------------------- pain ---------------------------------- */
.pain {
  background: linear-gradient(180deg, transparent, rgba(236, 230, 218, 0.46) 18%, rgba(236, 230, 218, 0.46) 82%, transparent);
}

.pain-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  gap: clamp(44px, 7vw, 104px);
  align-items: start;
}

.pain-intro {
  position: sticky;
  top: 120px;
}

.pain-intro .h2 {
  margin: 18px 0 24px;
}

.pain-intro .lead {
  max-width: 460px;
}

.pain-intro .text-link {
  margin-top: 26px;
}

.pain-list {
  border-top: 1px solid var(--line-strong);
}

.pain-item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  gap: 22px;
  align-items: start;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.pain-no {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--ink-4);
  padding-top: 5px;
}

.pain-body h3 {
  font-size: 19px;
  line-height: 1.45;
  font-weight: 560;
  letter-spacing: -0.02em;
  text-wrap: pretty;
}

.pain-body p {
  margin-top: 9px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-3);
  max-width: 460px;
}

.pain-fix {
  align-self: start;
  margin-top: 2px;
  padding: 6px 11px;
  border-radius: 999px;
  background: var(--sage-soft);
  color: var(--sage-deep);
  font-size: 10.5px;
  white-space: nowrap;
}

/* ---------------------------------- demo ---------------------------------- */
.demo-section {
  padding-top: 20px;
}

.demo-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.5vw, 62px);
  border-radius: clamp(30px, 3.4vw, 48px);
  background:
    radial-gradient(760px 520px at 88% -8%, rgba(188, 76, 44, 0.22), transparent 66%),
    radial-gradient(600px 500px at 4% 100%, rgba(141, 164, 143, 0.13), transparent 64%),
    #1c1d18;
  color: #f7f2e8;
  box-shadow: 0 60px 120px -70px rgba(27, 28, 24, 0.65);
}

.demo-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 253, 248, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 253, 248, 0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.8), transparent 55%);
  pointer-events: none;
}

.demo-head {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
  gap: 44px;
  align-items: end;
}

.demo-eyebrow {
  color: rgba(247, 242, 232, 0.45);
  margin-bottom: 20px;
}

.demo-head .h2 {
  color: #f8f3e9;
  max-width: 700px;
}

.demo-head-copy {
  max-width: 360px;
  padding-bottom: 6px;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(247, 242, 232, 0.6);
}

.demo-window {
  position: relative;
  z-index: 1;
  margin-top: clamp(34px, 4.5vw, 54px);
  border-radius: 26px;
  overflow: hidden;
  background: var(--surface);
  color: var(--ink);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.6) inset,
    0 50px 100px -40px rgba(0, 0, 0, 0.7);
}

.demo-windowbar {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 48px;
  padding: 0 18px;
  background: #f4efe4;
  border-bottom: 1px solid var(--line);
}

.window-dots {
  display: flex;
  gap: 5px;
}

.window-dots i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(27, 28, 24, 0.16);
}

.window-dots i:first-child { background: rgba(188, 76, 44, 0.55); }
.window-dots i:nth-child(2) { background: rgba(233, 205, 150, 0.85); }
.window-dots i:last-child { background: rgba(141, 164, 143, 0.7); }

.window-title {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 11.5px;
  color: var(--ink-3);
}

.window-title .icon {
  width: 13px;
  height: 13px;
  color: var(--accent);
}

.window-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-left: auto;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.7);
  border: 1px solid var(--line);
  font-size: 10px;
  color: var(--ink-3);
}

.window-badge .pulse-dot {
  background: var(--sage-deep);
  color: var(--sage-deep);
}

.demo-app {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr) 252px;
  min-height: 500px;
}

.demo-rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 14px 0 16px;
  background: #f4efe4;
  border-right: 1px solid var(--line);
}

.rail-logo {
  margin-bottom: 14px;
}

.rail-logo img {
  border-radius: 9px;
}

.rail-item {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  color: var(--ink-3);
  transition: background 0.3s var(--ease), color 0.3s var(--ease);
}

.rail-item .icon {
  width: 18px;
  height: 18px;
}

.rail-item.is-active {
  background: var(--ink);
  color: var(--surface);
  box-shadow: 0 8px 18px -12px rgba(27, 28, 24, 0.8);
}

.rail-spacer {
  flex: 1;
}

.rail-avatar {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-size: 12px;
  font-weight: 600;
}

.demo-main {
  min-width: 0;
  padding: 22px 26px 26px;
}

.demo-toolbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.demo-toolbar .mono {
  font-size: 9px;
  color: var(--ink-4);
  margin-bottom: 6px;
}

.demo-title {
  font-size: clamp(1.3rem, 2.2vw, 1.75rem);
  line-height: 1.2;
  letter-spacing: -0.035em;
  font-weight: 580;
}

.demo-toolbar-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
}

.demo-toolbar-meta .chip {
  min-height: 27px;
  padding: 0 9px;
  font-size: 10px;
  background: var(--surface-2);
}

.demo-tabs {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 20px;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  scrollbar-width: none;
}

.demo-tabs::-webkit-scrollbar { display: none; }

.demo-tab {
  position: relative;
  flex: 0 0 auto;
  padding: 11px 1px 13px;
  border: 0;
  background: transparent;
  color: var(--ink-3);
  font-size: 12.5px;
  font-weight: 500;
  white-space: nowrap;
  transition: color 0.3s var(--ease);
}

.demo-tab::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1.5px;
  background: var(--ink);
  transform: scaleX(0);
  transition: transform 0.4s var(--spring);
}

.demo-tab:hover { color: var(--ink); }

.demo-tab.is-active {
  color: var(--ink);
  font-weight: 600;
}

.demo-tab.is-active::after {
  transform: scaleX(1);
}

.demo-tab-note {
  margin-left: auto;
  padding-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.1em;
  color: var(--ink-4);
  white-space: nowrap;
}

.demo-panels {
  padding-top: 20px;
}

.demo-panel-content[hidden] {
  display: none;
}

.demo-panel-content.is-active {
  animation: panel-in 0.5s var(--ease);
}

@keyframes panel-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.demo-concept {
  padding: 20px 22px;
  border-radius: 18px;
  background:
    radial-gradient(320px 180px at 100% 0%, rgba(233, 205, 150, 0.34), transparent 70%),
    var(--accent-wash);
  border: 1px solid rgba(188, 76, 44, 0.14);
}

.demo-concept .mono {
  font-size: 8.5px;
  color: var(--accent-deep);
  opacity: 0.7;
}

.demo-concept h4 {
  margin-top: 8px;
  font-size: clamp(1.15rem, 1.8vw, 1.45rem);
  line-height: 1.35;
  letter-spacing: -0.03em;
  font-weight: 580;
}

.demo-concept p {
  margin-top: 7px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-3);
  max-width: 560px;
}

.demo-hook-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 20px;
}

.demo-hook {
  padding-left: 14px;
  border-left: 1px solid var(--line-strong);
}

.hook-label {
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.08em;
  color: var(--ink-4);
}

.demo-hook p {
  margin-top: 7px;
  font-size: 12.5px;
  line-height: 1.65;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink-2);
}

.hook-note {
  display: block;
  margin-top: 7px;
  font-size: 10.5px;
  color: var(--ink-4);
}

.script-table {
  border-top: 1px solid var(--line);
}

.script-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1.25fr) minmax(0, 0.9fr);
  gap: 16px;
  align-items: start;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}

.script-row-head {
  padding: 8px 0;
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.1em;
  color: var(--ink-4);
  border-bottom: 1px solid var(--line);
}

.script-row .mono {
  font-size: 9.5px;
  color: var(--accent-deep);
  padding-top: 2px;
}

.script-row p {
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--ink-2);
}

.script-row > span:last-child {
  font-size: 10.5px;
  line-height: 1.6;
  color: var(--ink-4);
}

.script-foot {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 12px;
  font-size: 10.5px;
  color: var(--ink-4);
}

.script-foot span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.script-foot .icon {
  width: 12px;
  height: 12px;
  color: var(--sage-deep);
}

.board-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.board-card {
  padding: 7px 7px 10px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface-2);
}

.frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border-radius: 11px;
  isolation: isolate;
}

.frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(27, 28, 24, 0.22));
  pointer-events: none;
}

.frame-no,
.frame-meta {
  position: absolute;
  z-index: 3;
  font-family: var(--font-mono);
  font-size: 8px;
  color: rgba(255, 253, 248, 0.9);
}

.frame-no {
  left: 9px;
  top: 8px;
  font-size: 10px;
  letter-spacing: 0.05em;
}

.frame-meta {
  left: 9px;
  bottom: 8px;
  color: rgba(255, 253, 248, 0.75);
}

.frame-rain {
  background:
    linear-gradient(115deg, rgba(255, 255, 255, 0.4), transparent 40%),
    linear-gradient(180deg, #aab5ad, #6e7f75);
}

.frame-rain::before {
  content: "";
  position: absolute;
  left: 26%;
  right: 16%;
  bottom: 0;
  height: 58%;
  border-radius: 4px 4px 0 0;
  background: linear-gradient(180deg, #3f4a42, #252c26);
  box-shadow: -18px 0 0 rgba(255, 253, 248, 0.13);
}

.frame-door {
  position: absolute;
  z-index: 2;
  left: 36%;
  bottom: 0;
  width: 28%;
  height: 47%;
  border: 2px solid rgba(255, 253, 248, 0.45);
  border-bottom: 0;
  border-radius: 20px 20px 0 0;
}

.rain {
  position: absolute;
  z-index: 2;
  width: 1px;
  height: 40%;
  background: linear-gradient(180deg, transparent, rgba(255, 253, 248, 0.75));
  transform: rotate(16deg);
}

.rain.a { left: 18%; top: 8%; }
.rain.b { left: 62%; top: 18%; height: 32%; }
.rain.c { left: 82%; top: 6%; height: 44%; }

.frame-pour {
  background:
    radial-gradient(circle at 72% 24%, rgba(255, 239, 216, 0.92), transparent 35%),
    linear-gradient(160deg, #e3b793, #c67b53);
}

.pour-kettle {
  position: absolute;
  z-index: 2;
  right: 12%;
  top: 12%;
  width: 34%;
  height: 26%;
  border-radius: 16px 22px 12px 16px;
  background: linear-gradient(160deg, #33352f, #1d1e1a);
  transform: rotate(-12deg);
  box-shadow: 0 10px 20px -12px rgba(27, 28, 24, 0.7);
}

.pour-kettle::after {
  content: "";
  position: absolute;
  left: -22%;
  top: 38%;
  width: 30%;
  height: 9px;
  border-radius: 6px;
  background: #1d1e1a;
  transform: rotate(-18deg);
}

.pour-cup {
  position: absolute;
  z-index: 2;
  left: 30%;
  bottom: 16%;
  width: 38%;
  height: 32%;
  border-radius: 6px 6px 22px 22px;
  background: linear-gradient(180deg, #fff8ec, #e6d3b7);
  box-shadow: 0 16px 24px -16px rgba(60, 35, 20, 0.6);
}

.pour-cup::before {
  content: "";
  position: absolute;
  left: -2%;
  top: -8%;
  width: 104%;
  height: 16%;
  border-radius: 50%;
  background: #5c3723;
  border: 2px solid #f4e4cc;
}

.pour-line {
  position: absolute;
  z-index: 1;
  left: 55%;
  top: 36%;
  width: 2px;
  height: 26%;
  background: linear-gradient(180deg, #6b422a, #a36a42);
  transform: rotate(7deg);
}

.frame-window {
  background:
    linear-gradient(90deg, rgba(255, 248, 233, 0.9), transparent 55%),
    linear-gradient(170deg, #ccd9ce, #8fa294);
}

.window-light {
  position: absolute;
  left: 0;
  top: 0;
  width: 48%;
  height: 100%;
  background: linear-gradient(90deg, rgba(255, 244, 224, 0.9), transparent);
}

.window-cup {
  position: absolute;
  right: 18%;
  bottom: 14%;
  width: 34%;
  height: 30%;
  border-radius: 4px 4px 18px 18px;
  background: linear-gradient(180deg, #fff8eb, #d8c4a7);
  box-shadow: 0 18px 28px -18px rgba(35, 46, 38, 0.7);
}

.window-cup::before {
  content: "";
  position: absolute;
  left: 16%;
  top: -26%;
  width: 68%;
  height: 26%;
  border-radius: 50%;
  border-top: 3px solid rgba(255, 253, 248, 0.65);
}

.board-info {
  padding: 9px 5px 0;
}

.board-info b {
  display: block;
  font-size: 11.5px;
  font-weight: 600;
}

.board-info span {
  display: block;
  margin-top: 2px;
  font-size: 9.5px;
  color: var(--ink-4);
}

.board-info p {
  margin-top: 6px;
  font-size: 10px;
  line-height: 1.55;
  color: var(--ink-3);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.board-tip {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  margin-top: 14px;
  font-size: 10.5px;
  color: var(--ink-4);
}

.board-tip .icon {
  width: 12px;
  height: 12px;
  margin-top: 2px;
  color: var(--sage-deep);
}

.flow-list {
  border-top: 1px solid var(--line);
}

.flow-row {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr) 62px;
  align-items: start;
  gap: 18px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
}

.flow-time {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--accent-deep);
  padding-top: 2px;
}

.flow-row b {
  font-size: 12px;
  font-weight: 600;
}

.flow-row p {
  margin-top: 2px;
  font-size: 10.5px;
  line-height: 1.6;
  color: var(--ink-4);
}

.flow-dur {
  justify-self: end;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--surface-2);
  font-family: var(--font-mono);
  font-size: 8.5px;
  color: var(--ink-3);
  white-space: nowrap;
}

.demo-aside {
  display: flex;
  flex-direction: column;
  padding: 20px 18px;
  background: #f8f3e9;
  border-left: 1px solid var(--line);
}

.demo-aside > .mono {
  font-size: 8.5px;
  color: var(--ink-4);
  margin-bottom: 10px;
}

.aside-cover {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border-radius: 14px;
  background: var(--paper-2);
}

.aside-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.aside-cover span {
  position: absolute;
  left: 8px;
  bottom: 8px;
  padding: 3px 7px;
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.82);
  font-size: 8.5px;
  color: var(--ink-2);
  backdrop-filter: blur(8px);
}

.demo-aside h4 {
  margin: 18px 0 10px;
  font-size: 13px;
  font-weight: 600;
}

.aside-list {
  display: grid;
  gap: 7px;
}

.aside-list li {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 10.5px;
  color: var(--ink-3);
}

.aside-list .icon {
  width: 12px;
  height: 12px;
  color: var(--sage-deep);
}

.aside-receipt {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 16px 0 14px;
  padding-top: 13px;
  border-top: 1px solid var(--line);
}

.aside-receipt span {
  padding: 3px 7px;
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.7);
  font-family: var(--font-mono);
  font-size: 8px;
  color: var(--ink-4);
}

.aside-cta {
  width: 100%;
  justify-content: space-between;
}

.aside-note {
  margin-top: 10px;
  font-size: 8.5px;
  line-height: 1.55;
  color: var(--ink-4);
}

/* --------------------------------- features -------------------------------- */
.features {
  background: var(--surface);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  grid-column: span 6;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset, var(--shadow-sm);
  transition: transform 0.6s var(--spring), box-shadow 0.6s var(--ease), border-color 0.4s var(--ease);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(27, 28, 24, 0.14);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset, var(--shadow-md);
}

.feature-store { grid-column: span 7; display: grid; grid-template-columns: 1.08fr 0.92fr; }
.feature-radar { grid-column: span 5; }
.feature-board { grid-column: span 5; }
.feature-analyze { grid-column: span 7; display: grid; grid-template-columns: 0.92fr 1.08fr; }
.feature-library { grid-column: span 6; }
.feature-publish { grid-column: span 6; }

.feature-art {
  position: relative;
  overflow: hidden;
  margin: 9px;
  border-radius: 21px;
  background: var(--paper);
  min-height: 200px;
}

.feature-art::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px rgba(27, 28, 24, 0.045);
  pointer-events: none;
}

.feature-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.1s var(--spring);
}

.feature-card:hover .feature-art img {
  transform: scale(1.035);
}

.feature-store .feature-art,
.feature-analyze .feature-art {
  min-height: 340px;
  height: calc(100% - 18px);
}

.feature-analyze .feature-art { order: 2; }
.feature-analyze .feature-copy { order: 1; }

.feature-copy {
  display: flex;
  flex-direction: column;
  padding: 18px 24px 24px;
}

.feature-store .feature-copy,
.feature-analyze .feature-copy {
  justify-content: center;
  padding: 30px 28px;
}

.feature-index {
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.1em;
  color: var(--ink-4);
  text-transform: uppercase;
}

.feature-copy h3 {
  margin: 10px 0 8px;
  font-size: clamp(1.2rem, 1.8vw, 1.55rem);
  line-height: 1.3;
  letter-spacing: -0.03em;
  font-weight: 580;
  text-wrap: balance;
}

.feature-copy p {
  font-size: 13px;
  line-height: 1.75;
  color: var(--ink-3);
  max-width: 480px;
}

.feature-copy .text-link {
  margin-top: auto;
  padding-top: 18px;
  align-self: flex-start;
  font-size: 12px;
}

/* -------------------------------- workflow -------------------------------- */
.workflow {
  background:
    radial-gradient(800px 600px at 0% 20%, rgba(141, 164, 143, 0.13), transparent 60%),
    var(--paper);
}

.workflow-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(44px, 7vw, 100px);
  align-items: start;
}

.workflow-intro {
  position: sticky;
  top: 118px;
}

.workflow-intro .h2 {
  margin: 18px 0 22px;
}

.workflow-intro .lead {
  max-width: 430px;
}

.workflow-note {
  margin: 30px 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  max-width: 400px;
}

.workflow-note .mono {
  color: var(--accent-deep);
  font-size: 9px;
}

.workflow-note p {
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-3);
}

.workflow-steps {
  border-top: 1px solid var(--line-strong);
}

.workflow-step {
  padding: 30px 0 34px;
  border-bottom: 1px solid var(--line);
}

.step-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 14px;
}

.step-no {
  font-size: clamp(2rem, 3.2vw, 2.8rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--accent);
}

.step-head .mono {
  font-size: 9px;
  color: var(--ink-4);
}

.workflow-step h3 {
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  letter-spacing: -0.035em;
  font-weight: 570;
  line-height: 1.3;
}

.workflow-step > p {
  margin-top: 10px;
  max-width: 540px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink-3);
}

.step-output {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  font-size: 11px;
}

.step-output span {
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--sage-soft);
  color: var(--sage-deep);
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.06em;
}

.step-output b {
  font-weight: 500;
  color: var(--ink-2);
}

/* ---------------------------------- cases --------------------------------- */
.cases {
  background: var(--surface);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.cases-head {
  align-items: flex-end;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 28px);
  align-items: start;
}

.case-card {
  border: 1px solid var(--line);
  border-radius: 26px;
  background: var(--surface);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.6s var(--spring), box-shadow 0.6s var(--ease);
}

.case-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.case-card-offset {
  margin-top: 48px;
}

.case-art {
  position: relative;
  aspect-ratio: 1.12;
  margin: 8px;
  border-radius: 19px;
  overflow: hidden;
  background: var(--paper);
}

.case-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.1s var(--spring);
}

.case-card:hover .case-art img {
  transform: scale(1.04);
}

.case-tag {
  position: absolute;
  left: 12px;
  top: 12px;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.82);
  color: var(--ink-2);
  font-size: 9.5px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.55);
}

.case-body {
  padding: 12px 24px 26px;
}

.case-body h3 {
  font-size: clamp(1.2rem, 1.8vw, 1.5rem);
  line-height: 1.35;
  letter-spacing: -0.03em;
  font-weight: 580;
}

.case-body p {
  margin-top: 9px;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--ink-3);
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 18px;
}

.case-meta span {
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--surface-2);
  font-family: var(--font-mono);
  font-size: 8.5px;
  color: var(--ink-3);
}

.case-disclaimer {
  margin-top: 30px;
  font-size: 10.5px;
  color: var(--ink-4);
}

/* -------------------------------- spec band -------------------------------- */
.spec-band {
  padding: clamp(60px, 7vw, 90px) 0;
  background: var(--ink);
  color: var(--surface);
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.spec-cell {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 28px;
  border-left: 1px solid rgba(255, 253, 248, 0.12);
}

.spec-cell:first-child {
  border-left: 0;
  padding-left: 0;
}

.spec-num {
  font-size: clamp(3.4rem, 6vw, 5.4rem);
  line-height: 0.9;
  font-weight: 300;
  letter-spacing: -0.06em;
  color: var(--butter);
  font-variant-numeric: tabular-nums;
}

.spec-label {
  font-size: 11.5px;
  line-height: 1.65;
  color: rgba(255, 253, 248, 0.6);
}

/* --------------------------------- pricing --------------------------------- */
.pricing {
  background: var(--paper);
}

.pricing-head {
  max-width: 720px;
  margin-bottom: clamp(40px, 5vw, 64px);
}

.pricing-head .h2 {
  margin: 18px 0 20px;
}

.pricing-head .lead {
  max-width: 520px;
}

.price-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  align-items: stretch;
}

.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px 28px 26px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.price-card.is-featured {
  background:
    radial-gradient(400px 300px at 100% 0%, rgba(188, 76, 44, 0.28), transparent 60%),
    var(--ink);
  border-color: var(--ink);
  color: var(--surface);
  box-shadow: 0 40px 90px -50px rgba(27, 28, 24, 0.7);
}

.price-flag {
  position: absolute;
  right: 22px;
  top: 22px;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--butter);
  color: var(--ink);
  font-size: 9.5px;
  font-weight: 600;
}

.price-top p {
  margin-top: 5px;
  font-size: 12px;
  color: var(--ink-3);
}

.is-featured .price-top p { color: rgba(255, 253, 248, 0.55); }

.price-name {
  font-size: 15px;
  font-weight: 600;
}

.price-num {
  display: flex;
  align-items: baseline;
  gap: 3px;
  margin: 26px 0 24px;
  font-size: clamp(3rem, 5vw, 4.2rem);
  line-height: 0.95;
  font-weight: 420;
  letter-spacing: -0.055em;
  font-variant-numeric: tabular-nums;
}

.price-num span {
  font-size: 1rem;
  font-weight: 500;
  transform: translateY(-1.1em);
}

.price-num small {
  margin-left: 6px;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--ink-3);
}

.is-featured .price-num small { color: rgba(255, 253, 248, 0.5); }

.price-list {
  display: flex;
  flex-direction: column;
  gap: 11px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.is-featured .price-list { border-color: rgba(255, 253, 248, 0.12); }

.price-list li {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: 12.5px;
  color: var(--ink-2);
}

.is-featured .price-list li { color: rgba(255, 253, 248, 0.78); }

.price-list .icon {
  width: 13px;
  height: 13px;
  margin-top: 4px;
  color: var(--sage-deep);
}

.is-featured .price-list .icon { color: var(--sage); }

.price-btn {
  width: 100%;
  justify-content: space-between;
  margin-top: 30px;
}

.is-featured .price-btn {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff9f4;
}

.price-note {
  margin-top: 20px;
  font-size: 10.5px;
  color: var(--ink-4);
}

/* ----------------------------------- faq ---------------------------------- */
.faq {
  background: var(--surface);
  border-top: 1px solid var(--line-soft);
}

.faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
  gap: clamp(44px, 7vw, 100px);
  align-items: start;
}

.faq-intro {
  position: sticky;
  top: 118px;
}

.faq-intro .h2 {
  margin: 18px 0 22px;
}

.faq-intro .lead {
  max-width: 380px;
}

.faq-list {
  border-top: 1px solid var(--line-strong);
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0;
  cursor: pointer;
  list-style: none;
  font-size: 14.5px;
  font-weight: 520;
  letter-spacing: -0.015em;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary .icon {
  width: 17px;
  height: 17px;
  color: var(--ink-4);
  transition: transform 0.4s var(--spring);
  flex: 0 0 auto;
}

.faq-item[open] summary .icon {
  transform: rotate(45deg);
  color: var(--accent-deep);
}

.faq-item p {
  max-width: 640px;
  padding: 0 34px 24px 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-3);
}

.faq-item code {
  padding: 1px 5px;
  border-radius: 5px;
  background: var(--surface-3);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent-deep);
}

/* ----------------------------------- cta ---------------------------------- */
.cta-section {
  padding: clamp(70px, 8vw, 110px) 0;
  background: var(--surface);
}

.cta-panel {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  align-items: center;
  min-height: 460px;
  padding: clamp(34px, 5.5vw, 70px);
  border-radius: clamp(30px, 3.4vw, 46px);
  background:
    radial-gradient(720px 500px at 90% 10%, rgba(233, 205, 150, 0.5), transparent 64%),
    linear-gradient(135deg, #eadfce, #e2d3bc 55%, #d9c5a9);
  border: 1px solid rgba(255, 255, 255, 0.45);
  box-shadow: 0 50px 110px -60px rgba(73, 51, 35, 0.5);
}

.cta-copy {
  position: relative;
  z-index: 2;
  max-width: 500px;
}

.cta-copy > .mono {
  color: rgba(27, 28, 24, 0.45);
  font-size: 9px;
}

.cta-copy .h2 {
  margin: 18px 0 18px;
}

.cta-copy > p {
  max-width: 380px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-2);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.cta-note {
  margin-top: 18px;
  font-size: 10.5px;
  color: rgba(27, 28, 24, 0.5);
}

.cta-art {
  position: absolute;
  right: -7%;
  bottom: -22%;
  width: 62%;
  aspect-ratio: 1.1;
  pointer-events: none;
  mask-image: radial-gradient(circle at 50% 50%, #000 55%, transparent 78%);
}

.cta-art img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.cta-sticker {
  position: absolute;
  right: 26%;
  top: 10%;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  color: rgba(27, 28, 24, 0.4);
  transform: rotate(-5deg);
}

/* --------------------------------- footer --------------------------------- */
.footer {
  padding: clamp(54px, 6vw, 80px) 0 26px;
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) repeat(3, minmax(0, 0.8fr));
  gap: 40px;
}

.footer-brand .brand {
  margin-bottom: 18px;
}

.footer-brand > p {
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-3);
}

.footer-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 20px;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 9.5px;
  color: var(--ink-3);
}

.footer-chip .dot { background: var(--sage-deep); }

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col .mono {
  font-size: 8.5px;
  color: var(--ink-4);
  margin-bottom: 6px;
}

.footer-col a,
.footer-col span {
  font-size: 12px;
  color: var(--ink-3);
  transition: color 0.3s var(--ease);
  width: fit-content;
}

.footer-col a:hover { color: var(--accent-deep); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 54px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 10px;
  color: var(--ink-4);
}

.footer-bottom a { transition: color 0.3s var(--ease); }
.footer-bottom a:hover { color: var(--ink); }

/* -------------------------------- responsive ------------------------------- */
@media (max-width: 1180px) {
  .hero-title { font-size: clamp(3.6rem, 7vw, 5.9rem); }
  .float-hot { right: -6px; }
  .float-plan { left: -10px; }
  .demo-app { grid-template-columns: 54px minmax(0, 1fr) 226px; }
  .demo-main { padding-inline: 20px; }
  .demo-hook-list { gap: 12px; }
}

@media (max-width: 1024px) {
  .nav-links { gap: 18px; }
  .nav-links a { font-size: 12.5px; }
  .nav-preview { display: none; }
  .hero-grid { gap: 34px; }
  .hero-title { font-size: clamp(3.4rem, 6.6vw, 5.2rem); }
  .hero-stage { margin-right: 4px; }
  .float-hot { width: 204px; top: -10px; }
  .float-plan { width: 216px; bottom: 18px; }
  .float-chip { font-size: 10px; }
  .pain-grid { gap: 50px; }
  .demo-aside { display: none; }
  .demo-app { grid-template-columns: 54px minmax(0, 1fr); }
  .feature-store .feature-art,
  .feature-analyze .feature-art { min-height: 290px; }
  .workflow-grid { gap: 50px; }
}

@media (max-width: 900px) {
  .nav-links { display: none; }
  .menu-btn { display: grid; }
  .nav-cta { display: none; }
  .nav { top: 12px; }
  .hero { padding-top: calc(var(--nav-h) + 58px); }
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 54px; }
  .hero-copy { max-width: 640px; }
  .hero-title { font-size: clamp(3.8rem, 11vw, 6rem); }
  .hero-stage { max-width: 640px; width: 100%; margin-inline: auto; }
  .hero-foot { flex-wrap: wrap; gap: 14px 26px; }
  .platform-rail { margin-left: 0; }
  .pain-grid { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .pain-intro,
  .workflow-intro,
  .faq-intro { position: static; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 24px; }
  .section-head-copy { max-width: 520px; padding-bottom: 0; }
  .feature-store,
  .feature-analyze {
    grid-column: span 12;
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .feature-radar,
  .feature-board,
  .feature-library,
  .feature-publish { grid-column: span 6; }
  .demo-head { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .demo-head-copy { max-width: 480px; }
  .demo-rail { display: none; }
  .demo-app { grid-template-columns: minmax(0, 1fr); }
  .demo-hook-list { grid-template-columns: 1fr; gap: 12px; }
  .demo-hook { padding: 10px 0 0; border-left: 0; border-top: 1px solid var(--line); }
  .board-grid { gap: 8px; }
  .workflow-grid { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .case-card-offset { margin-top: 0; }
  .case-card:last-child { grid-column: span 2; max-width: calc(50% - 14px); }
  .price-grid { grid-template-columns: 1fr; max-width: 560px; }
  .price-card.is-featured { order: -1; }
  .faq-grid { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .cta-panel { grid-template-columns: 1fr; min-height: 0; }
  .cta-art { width: 72%; right: -16%; bottom: -20%; opacity: 0.6; }
  .cta-copy { max-width: 470px; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-col:last-child { display: none; }
}

@media (max-width: 720px) {
  :root { --pad-x: 20px; }
  .hero { padding-top: calc(var(--nav-h) + 48px); }
  .hero-title { font-size: clamp(3.2rem, 12.5vw, 4.6rem); }
  .hero-lead { font-size: 14.5px; }
  .hero-notes { gap: 10px 18px; }
  .float-hot { width: 190px; top: -12px; right: -4px; padding: 11px 12px; }
  .float-plan { width: 196px; left: -4px; bottom: 16px; padding: 11px 12px; }
  .float-line { font-size: 12.5px; }
  .float-chip { right: 8px; bottom: -14px; font-size: 9.5px; }
  .art-stamp { left: 14px; bottom: 12px; }
  .industry-rail span + span::before { margin-right: 14px; }
  .industry-rail { gap: 8px 14px; }
  .pain-item { grid-template-columns: 30px minmax(0, 1fr); gap: 12px; }
  .pain-fix { grid-column: 2; justify-self: start; margin-top: 4px; }
  .pain-body h3 { font-size: 17px; }
  .demo-panel { border-radius: 28px; padding: 22px 14px; }
  .demo-window { border-radius: 20px; }
  .demo-windowbar { height: 42px; padding: 0 12px; gap: 10px; }
  .window-badge { display: none; }
  .demo-main { padding: 18px 14px 20px; }
  .demo-toolbar { flex-direction: column; gap: 10px; }
  .demo-toolbar-meta { justify-content: flex-start; }
  .demo-tabs { gap: 18px; margin-top: 14px; }
  .demo-tab { font-size: 11.5px; }
  .demo-tab-note { display: none; }
  .demo-concept { padding: 16px; }
  .demo-concept h4 { font-size: 1.1rem; }
  .script-row { grid-template-columns: 48px minmax(0, 1fr); gap: 10px; }
  .script-row-head span:last-child,
  .script-row > span:last-child { display: none; }
  .script-row p { font-size: 12px; }
  .board-grid { grid-template-columns: repeat(3, minmax(150px, 1fr)); overflow-x: auto; padding-bottom: 6px; scroll-snap-type: x mandatory; }
  .board-card { scroll-snap-align: start; }
  .flow-row { grid-template-columns: 82px minmax(0, 1fr); gap: 10px; }
  .flow-dur { display: none; }
  .flow-row p { font-size: 10px; }
  .bento { gap: 12px; }
  .feature-store,
  .feature-analyze,
  .feature-radar,
  .feature-board,
  .feature-library,
  .feature-publish { grid-column: span 12; }
  .feature-store,
  .feature-analyze { grid-template-columns: minmax(0, 1fr); }
  .feature-analyze .feature-art { order: 0; }
  .feature-store .feature-art,
  .feature-analyze .feature-art { min-height: 250px; height: auto; aspect-ratio: 1.35; }
  .feature-copy { padding: 16px 20px 22px; }
  .feature-store .feature-copy,
  .feature-analyze .feature-copy { padding: 18px 20px 24px; }
  .feature-copy h3 { font-size: 1.25rem; }
  .case-grid { grid-template-columns: minmax(0, 1fr); }
  .case-card:last-child { grid-column: auto; max-width: none; }
  .case-card-offset { margin-top: 0; }
  .case-art { aspect-ratio: 1.35; }
  .spec-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 0; }
  .spec-cell { border-left: 0; padding: 0 18px 0 0; }
  .spec-cell:nth-child(even) { padding-left: 24px; border-left: 1px solid rgba(255, 253, 248, 0.12); }
  .spec-num { font-size: 3.2rem; }
  .spec-label { font-size: 10px; }
  .price-card { padding: 24px 22px; }
  .price-num { margin: 22px 0 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px 20px; }
  .footer-brand { grid-column: span 2; }
  .footer-col:last-child { display: flex; }
  .footer-bottom { flex-wrap: wrap; gap: 8px 16px; margin-top: 36px; }
  .cta-panel { padding: 28px 22px 200px; }
  .cta-art { width: 94%; right: -22%; bottom: -10%; opacity: 0.75; }
  .cta-copy .h2 { font-size: clamp(2rem, 8vw, 2.8rem); }
  .cta-sticker { display: none; }
}

@media (max-width: 480px) {
  .brand-en { display: none; }
  .brand-cn { font-size: 16px; }
  .hero-cta { width: 100%; justify-content: space-between; }
  .hero-actions { gap: 12px; }
  .hero-play { margin-left: 2px; }
  .float-hot { top: -14px; }
  .float-plan { display: none; }
  .float-chip { font-size: 9px; padding: 8px 11px; }
  .hero-art-frame { border-radius: 24px; }
  .hero-foot-label { width: 100%; }
  .platform-rail { width: 100%; }
  .pain-intro .h2,
  .section-head .h2 { font-size: clamp(2rem, 8.5vw, 2.7rem); }
  .demo-head .h2 { font-size: clamp(1.9rem, 8vw, 2.5rem); }
  .spec-cell { align-items: flex-start; flex-direction: column; gap: 6px; }
  .spec-cell:nth-child(even) { border-left: 0; padding-left: 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
  .footer-col:last-child { display: flex; }
}