:root {
  --bg: #0b1f1c;
  --bg-elev: #122a26;
  --ink: #f3f7f5;
  --muted: #a8bdb6;
  --line: rgba(243, 247, 245, 0.12);
  --teal: #1f8a70;
  --teal-bright: #2db88f;
  --amber: #e8a23a;
  --amber-soft: rgba(232, 162, 58, 0.18);
  /* 展示字用 Noto：ZCOOL XiaoWei 缺字会导致「回」等变成方块 */
  --font-display: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-brand: "ZCOOL XiaoWei", "Noto Sans SC", "PingFang SC", sans-serif;
  --wrap: min(1120px, calc(100% - 3rem));
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --topbar-h: 3.5rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
}

.wrap {
  width: var(--wrap);
  margin-inline: auto;
}

/* —— Topbar —— */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--topbar-h);
  padding: 0.65rem max(1.25rem, env(safe-area-inset-right)) 0.65rem max(1.25rem, env(safe-area-inset-left));
  background: rgba(11, 31, 28, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.topbar-brand {
  font-family: var(--font-brand);
  font-size: 1.25rem;
  letter-spacing: 0.04em;
}

.topbar-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem 1.1rem;
  font-size: 0.9rem;
  color: var(--muted);
}

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

.topbar-cta {
  color: var(--bg) !important;
  background: var(--amber);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  font-weight: 500;
}

.topbar-cta:hover {
  filter: brightness(1.05);
}

/* —— Hero —— */
.hero {
  position: relative;
  min-height: calc(100svh - var(--topbar-h));
  display: grid;
  align-items: center;
  justify-items: stretch;
  overflow: hidden;
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(45, 184, 143, 0.28), transparent 55%),
    radial-gradient(ellipse 50% 45% at 15% 80%, rgba(232, 162, 58, 0.16), transparent 50%),
    linear-gradient(165deg, #071614 0%, #0b1f1c 45%, #12352e 100%);
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='.35'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
  pointer-events: none;
}

.hero-inner {
  width: var(--wrap);
  margin-inline: auto;
  padding: clamp(3.5rem, 8vh, 6rem) 0 clamp(3rem, 6vh, 5rem);
  text-align: left;
}

.hero-inner > .hero-lead,
.hero-inner > .hero-sub,
.hero-inner > .hero-guarantee,
.hero-inner > .hero-actions {
  max-width: 36rem;
}

.hero-brand {
  margin: 0 0 0.35rem;
  font-family: var(--font-brand);
  font-size: clamp(2.8rem, 9vw, 5.5rem);
  line-height: 1.05;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.hero-title {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 700;
  color: var(--teal-bright);
  letter-spacing: 0.12em;
}

.hero-lead {
  margin: 0 0 0.65rem;
  font-size: clamp(1.05rem, 2.4vw, 1.25rem);
  color: var(--muted);
}

.hero-sub {
  margin: 0 0 0.55rem;
  font-size: 0.98rem;
  color: var(--amber);
  font-weight: 500;
  line-height: 1.55;
}

.hero-guarantee {
  margin: 0 0 2rem;
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.55;
}

.hero-guarantee strong {
  color: var(--teal-bright);
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.85rem 1.4rem;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease);
  -webkit-tap-highlight-color: transparent;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--amber);
  color: #1a1408;
}

.btn-ghost {
  border-color: var(--line);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.04);
}

.btn-ghost:hover {
  border-color: rgba(243, 247, 245, 0.35);
}

/* —— Sections —— */
.section {
  padding: 5.5rem 0;
  border-top: 1px solid var(--line);
}

.section-title {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  font-weight: 900;
  letter-spacing: 0.04em;
}

.section-desc {
  margin: 0 0 2.5rem;
  max-width: 42rem;
  color: var(--muted);
  font-size: 1.02rem;
}

.section-desc strong {
  color: var(--amber);
  font-weight: 500;
}

/* Icons */
.ico {
  flex-shrink: 0;
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
  border-radius: 0.65rem;
  border: 1px solid var(--line);
}

.ico svg {
  width: 1.35rem;
  height: 1.35rem;
}

.ico-teal {
  color: var(--teal-bright);
  background: rgba(45, 184, 143, 0.1);
  border-color: rgba(45, 184, 143, 0.28);
}

.ico-amber {
  color: var(--amber);
  background: var(--amber-soft);
  border-color: rgba(232, 162, 58, 0.35);
}

/* Pain */
.pain-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.pain-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.1rem 1.35rem;
  align-items: start;
  padding: 1.45rem 0;
  border-top: 1px solid var(--line);
}

.pain-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.pain-mark {
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
  border-radius: 0.65rem;
  color: var(--amber);
  background: var(--amber-soft);
  border: 1px solid rgba(232, 162, 58, 0.3);
}

.pain-mark svg {
  width: 1.25rem;
  height: 1.25rem;
}

.pain-body {
  display: grid;
  grid-template-columns: minmax(9rem, 0.85fr) 1.35fr;
  gap: 0.5rem 1.5rem;
  align-items: baseline;
}

.pain-q {
  font-weight: 700;
  font-size: 1.1rem;
}

.pain-a {
  color: var(--muted);
}

/* Features — icon + text rows, not card wall */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 2.5rem;
  row-gap: 0;
}

.feature {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
  padding: 1.65rem 0;
  border-top: 1px solid var(--line);
  transition: background 0.3s var(--ease);
}

.feature:nth-last-child(-n + 2) {
  border-bottom: 1px solid var(--line);
}

.feature:hover .ico {
  transform: translateY(-2px);
}

.feature .ico {
  transition: transform 0.3s var(--ease);
}

.feature-text {
  min-width: 0;
}

.feature h3 {
  margin: 0.15rem 0 0.45rem;
  font-size: 1.15rem;
  font-weight: 700;
}

.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

/* ROI */
.section-roi {
  background:
    radial-gradient(ellipse 60% 50% at 10% 20%, rgba(232, 162, 58, 0.12), transparent 55%),
    var(--bg);
}

.roi-math {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 0.75rem 1rem;
  align-items: stretch;
  margin-bottom: 2.25rem;
}

.roi-item {
  padding: 1.25rem 1.1rem;
  border-top: 2px solid rgba(45, 184, 143, 0.45);
  background: rgba(243, 247, 245, 0.03);
}

.roi-item-focus {
  border-top-color: var(--amber);
  background: var(--amber-soft);
}

.roi-kicker {
  margin: 0 0 0.5rem;
  font-size: 0.85rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.roi-figure {
  margin: 0 0 0.45rem;
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.3;
}

.roi-num {
  font-size: 1.85rem;
  font-weight: 900;
  color: var(--teal-bright);
  font-variant-numeric: tabular-nums;
}

.roi-item-focus .roi-num,
.roi-item-focus .roi-figure strong {
  color: var(--amber);
}

.roi-item-focus .roi-figure strong {
  font-weight: 900;
}

.roi-hint {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.roi-arrow {
  display: grid;
  place-items: center;
  color: var(--amber);
  font-size: 1.4rem;
  opacity: 0.85;
}

.roi-points {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  gap: 0;
}

.roi-points li {
  display: grid;
  grid-template-columns: minmax(8rem, 0.7fr) 1.5fr;
  gap: 0.5rem 1.5rem;
  padding: 1.15rem 0;
  border-top: 1px solid var(--line);
}

.roi-points li:last-child {
  border-bottom: 1px solid var(--line);
}

.roi-point-title {
  font-weight: 700;
  color: var(--ink);
}

.roi-point-text {
  color: var(--muted);
}

.roi-promise {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
  margin: 0 0 1.25rem;
  padding: 1.25rem 1.15rem;
  border: 1px solid rgba(232, 162, 58, 0.4);
  background: rgba(232, 162, 58, 0.08);
}

.roi-promise-title {
  margin: 0.1rem 0 0.4rem;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--amber);
}

.roi-promise-text {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
  max-width: 44rem;
}

.roi-promise-text strong {
  color: var(--ink);
  font-weight: 700;
}

.roi-note {
  margin: 0 0 1.5rem;
  font-size: 0.88rem;
  color: var(--muted);
  max-width: 48rem;
}

.roi-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Tiers */
.section-tiers {
  background:
    linear-gradient(180deg, rgba(18, 42, 38, 0.65), transparent 40%),
    var(--bg);
}

.tier-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem 3rem;
  align-items: start;
}

.tier-head {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.tier-label {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.tier-focus .tier-label {
  color: var(--amber);
}

.tier-cover {
  margin: 0.2rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.tier-earn-label {
  margin: 0 0 0.35rem;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.tier[data-tier="vip"] .tier-earn-label {
  color: var(--teal-bright);
}

.tier-range {
  margin: 0 0 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.2rem 0.35rem;
}

.tier-num {
  font-size: clamp(2.4rem, 6vw, 3.4rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--teal-bright);
  font-variant-numeric: tabular-nums;
}

.tier-focus .tier-num {
  color: var(--amber);
}

.tier-sep {
  font-size: 1.5rem;
  color: var(--muted);
}

.tier-unit {
  width: 100%;
  margin-top: 0.35rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.tier-points {
  margin: 0;
  padding: 0 0 0 1.1rem;
  color: var(--muted);
}

.tier-points li + li {
  margin-top: 0.45rem;
}

.tier-focus {
  padding-left: 1.5rem;
  border-left: 2px solid var(--amber-soft);
}

.tier-note {
  margin: 2rem 0 0;
  font-size: 0.88rem;
  color: var(--muted);
  max-width: 48rem;
}

/* Voices */
.section-voices {
  background:
    linear-gradient(180deg, transparent, rgba(18, 42, 38, 0.55) 30%, transparent),
    var(--bg);
}

.voices-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  margin-bottom: 0.5rem;
}

.voices-head .section-title {
  margin: 0;
}

.voices-tagline {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.section-voices .section-desc {
  margin-bottom: 2rem;
}

.voice-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}

.voice-user {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 0.75rem;
}

.voice-avatar {
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--bg);
  background: linear-gradient(145deg, var(--teal-bright), var(--teal));
}

.voice-avatar-2 {
  background: linear-gradient(145deg, #e8b85a, var(--amber));
}

.voice-avatar-3 {
  background: linear-gradient(145deg, #6db8a8, #2a7a68);
}

.voice-avatar-4 {
  background: linear-gradient(145deg, #c9a06a, #8a5a2b);
}

.voice-avatar-5 {
  background: linear-gradient(145deg, #7eb8d4, #2f6f8a);
}

.voice-avatar-6 {
  background: linear-gradient(145deg, #d4a0b8, #8a4a68);
}

.voice-avatar-7 {
  background: linear-gradient(145deg, #a8c97a, #4a7a3a);
}

.voice-avatar-8 {
  background: linear-gradient(145deg, #e0c070, #9a7020);
}

@media (min-width: 821px) {
  .voice-list {
    grid-template-columns: 1fr 1fr;
    column-gap: 2rem;
    row-gap: 1.5rem;
  }
}

.voice-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 0.75rem;
}

.voice-name {
  font-weight: 700;
  font-size: 1.05rem;
}

.voice-badge {
  font-size: 0.85rem;
  color: var(--muted);
}

.voice-badge::before {
  content: "";
  display: inline-block;
  width: 0.45rem;
  height: 0.45rem;
  margin-right: 0.35rem;
  border-radius: 50%;
  background: var(--teal-bright);
  vertical-align: 0.1em;
}

.voice-quote {
  margin: 0;
  padding: 1.1rem 1.25rem;
  border-left: 2px solid rgba(232, 162, 58, 0.45);
  background: rgba(243, 247, 245, 0.04);
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.7;
}

/* Flow */
.flow-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.75rem;
}

@media (min-width: 900px) {
  .flow-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem 2rem;
  }

  .flow-steps li {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }
}

.flow-steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  align-items: start;
}

.flow-step {
  width: 3rem;
  height: 3rem;
  display: grid;
  place-items: center;
  border-radius: 0.75rem;
  border: 1px solid rgba(45, 184, 143, 0.35);
  color: var(--teal-bright);
  background: rgba(45, 184, 143, 0.1);
}

.flow-step svg {
  width: 1.4rem;
  height: 1.4rem;
}

.flow-step-amber {
  color: var(--amber);
  background: var(--amber-soft);
  border-color: rgba(232, 162, 58, 0.35);
}

.flow-label {
  margin: 0 0 0.2rem;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal-bright);
  font-weight: 500;
}

.flow-steps h3 {
  margin: 0 0 0.35rem;
  font-size: 1.15rem;
}

.flow-steps p {
  margin: 0;
  color: var(--muted);
}

/* Contact */
.section-contact {
  background:
    radial-gradient(ellipse 70% 80% at 50% 100%, rgba(45, 184, 143, 0.18), transparent 60%),
    var(--bg-elev);
}

.contact-inner {
  text-align: center;
}

.contact-inner .section-desc {
  margin-inline: auto;
}

.contact-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.contact-meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.contact-dot {
  margin: 0 0.45rem;
  opacity: 0.5;
}

.contact-xianyu-link {
  color: var(--amber);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.contact-xianyu-link:hover {
  color: var(--ink);
}

/* Footer */
.footer {
  padding: 2.5rem 0 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}

.footer-inner p {
  margin: 0 0 0.5rem;
  max-width: 42rem;
}

.footer strong {
  color: var(--ink);
  font-weight: 500;
}

.footer-copy {
  margin-top: 1.25rem !important;
  opacity: 0.75;
}

/* Reveal motion */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

.hero .reveal {
  transition-delay: 0s;
}

.hero .reveal:nth-child(2) {
  transition-delay: 0.08s;
}

.hero .reveal:nth-child(3) {
  transition-delay: 0.16s;
}

.hero .reveal:nth-child(4) {
  transition-delay: 0.24s;
}

.hero .reveal:nth-child(5) {
  transition-delay: 0.32s;
}

.hero .reveal:nth-child(6) {
  transition-delay: 0.4s;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .btn:hover {
    transform: none;
  }
}

/* Mobile sticky CTA */
.mobile-cta {
  display: none;
}

/* —— Responsive: tablet —— */
@media (max-width: 960px) {
  .roi-math {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .roi-arrow {
    transform: rotate(90deg);
    line-height: 1;
    padding: 0.1rem 0;
  }
}

/* —— Responsive: mobile / narrow —— */
@media (max-width: 820px) {
  :root {
    --wrap: calc(100% - 1.5rem);
    --topbar-h: 3.25rem;
  }

  body {
    padding-bottom: calc(4.25rem + env(safe-area-inset-bottom));
  }

  .topbar-brand {
    font-size: 1.1rem;
  }

  .topbar-nav a:not(.topbar-cta) {
    display: none;
  }

  .topbar-cta {
    padding: 0.45rem 0.95rem;
    font-size: 0.88rem;
  }

  .hero {
    min-height: auto;
  }

  .hero-inner {
    padding: 2.75rem 0 2.5rem;
  }

  .hero-brand {
    font-size: clamp(2.15rem, 11vw, 3.1rem);
  }

  .hero-title {
    font-size: clamp(1.35rem, 6vw, 1.85rem);
    letter-spacing: 0.08em;
  }

  .hero-inner > .hero-lead,
  .hero-inner > .hero-sub,
  .hero-inner > .hero-guarantee,
  .hero-inner > .hero-actions {
    max-width: none;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.65rem;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .section {
    padding: 3.5rem 0;
  }

  .section-title {
    font-size: clamp(1.45rem, 6.5vw, 1.9rem);
    line-height: 1.3;
  }

  .section-desc {
    margin-bottom: 1.75rem;
    font-size: 0.95rem;
  }

  .pain-body {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .pain-list li {
    gap: 0.85rem;
    padding: 1.15rem 0;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .feature {
    padding: 1.25rem 0;
    gap: 0.9rem;
  }

  .feature:nth-last-child(-n + 2) {
    border-bottom: none;
  }

  .feature:last-child {
    border-bottom: 1px solid var(--line);
  }

  .ico {
    width: 2.45rem;
    height: 2.45rem;
  }

  .roi-points li {
    grid-template-columns: 1fr;
    gap: 0.3rem;
    padding: 1rem 0;
  }

  .roi-promise {
    flex-direction: column;
    gap: 0.75rem;
    padding: 1.1rem 1rem;
  }

  .roi-promise-title {
    font-size: 1.1rem;
  }

  .roi-cta {
    display: grid;
    grid-template-columns: 1fr;
  }

  .roi-cta .btn {
    width: 100%;
  }

  .tier-compare {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .tier-focus {
    padding-left: 0;
    border-left: none;
    padding-top: 1.5rem;
    border-top: 2px solid var(--amber-soft);
  }

  .tier-label {
    font-size: 1.45rem;
  }

  .tier-num {
    font-size: clamp(2.1rem, 10vw, 2.8rem);
  }

  .voices-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }

  .voice-quote {
    padding: 0.95rem 1rem;
    font-size: 0.94rem;
  }

  .flow-steps {
    gap: 1.35rem;
  }

  .contact-meta {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    align-items: center;
    text-align: center;
    line-height: 1.5;
    padding-inline: 0.5rem;
  }

  .contact-dot {
    display: none;
  }

  .contact-actions .btn {
    width: min(100%, 20rem);
  }

  .footer {
    padding: 2rem 0 1.5rem;
  }

  .mobile-cta {
    display: block;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 30;
    padding: 0.65rem 0.85rem calc(0.65rem + env(safe-area-inset-bottom));
    background: rgba(11, 31, 28, 0.94);
    backdrop-filter: blur(12px);
    border-top: 1px solid var(--line);
    box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.25);
  }

  .mobile-cta .btn {
    width: 100%;
  }
}

/* —— Responsive: small phones —— */
@media (max-width: 380px) {
  :root {
    --wrap: calc(100% - 1.25rem);
  }

  .hero-brand {
    font-size: 1.95rem;
  }

  .section {
    padding: 3rem 0;
  }

  .roi-num {
    font-size: 1.55rem;
  }
}

/* —— Responsive: large desktop —— */
@media (min-width: 1200px) {
  :root {
    --wrap: min(1160px, calc(100% - 4rem));
  }

  .section {
    padding: 6rem 0;
  }

  .tier-compare {
    gap: 2.5rem 4rem;
  }

  .feature-grid {
    column-gap: 3.5rem;
  }
}