/* ---------------------------------------------------------------
   Coca-Cola Zero Sugar — concept landing page
   Custom design system: no external dependencies, all self-contained.
------------------------------------------------------------------ */

:root {
  --black: #050505;
  --black-soft: #0b0b0c;
  --panel: #131315;
  --panel-2: #1a1a1d;
  --line: #29292c;
  --white: #f7f7f5;
  --muted: #a3a3a8;
  --silver: #cfcfd2;

  --red: #e4041a;
  --red-dark: #8f000c;
  --red-light: #ff3b30;

  --font-display: "Helvetica Neue", Helvetica, Arial, "Segoe UI", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --shell-max: 1180px;
  --shell-pad: clamp(1.25rem, 4vw, 3rem);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --nav-h: 76px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
}

body {
  margin: 0;
  background: var(--black);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

button {
  font: inherit;
  color: inherit;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 0.5em;
  text-wrap: balance;
}

p {
  margin: 0 0 1em;
  color: var(--silver);
}

.text-accent {
  color: var(--red);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 1rem;
  z-index: 1000;
  background: var(--red);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: 0.5rem;
  font-weight: 700;
  transition: top 0.2s var(--ease);
}

.skip-link:focus {
  top: 1rem;
}

.shell {
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--shell-pad);
}

/* ---------------------------------- Nav ---------------------------------- */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: linear-gradient(to bottom, rgba(5, 5, 5, 0.9), rgba(5, 5, 5, 0));
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
  border-bottom: 1px solid transparent;
}

.nav.is-scrolled {
  background: rgba(5, 5, 5, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}

.nav__inner {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--shell-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  white-space: nowrap;
}

.nav__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 12px rgba(228, 4, 26, 0.8);
}

.nav__links {
  display: flex;
  gap: 1.75rem;
  align-items: center;
}

.nav__links a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted);
  transition: color 0.2s var(--ease);
}

.nav__links a:hover,
.nav__links a:focus-visible {
  color: var(--white);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav__toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: var(--panel);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
}

.nav__toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--white);
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}

.nav__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------------------------------- Buttons ---------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.btn--primary {
  background: var(--red);
  color: #fff;
  box-shadow: 0 10px 30px -12px rgba(228, 4, 26, 0.75);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--red-light);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--white);
  border-color: var(--line);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--white);
  transform: translateY(-2px);
}

.btn--sm {
  padding: 0.55rem 1.1rem;
  font-size: 0.85rem;
}

.btn--lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* ---------------------------------- Chips ---------------------------------- */

.chip-row {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 0;
  margin: 1.75rem 0 0;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--silver);
}

.chip--accent {
  border-color: rgba(228, 4, 26, 0.4);
  background: rgba(228, 4, 26, 0.12);
  color: var(--white);
}

/* ---------------------------------- Section scaffolding ---------------------------------- */

main section {
  position: relative;
  padding-block: clamp(4rem, 9vw, 7.5rem);
}

.section-head {
  max-width: 640px;
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}

.section-index {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red);
  margin: 0 0 0.75rem;
}

.section-head h2 {
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
}

/* ---------------------------------- Hero ---------------------------------- */

.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--nav-h) + 2rem);
  overflow: hidden;
  background: radial-gradient(120% 90% at 15% 0%, #1a1a1a 0%, var(--black) 55%);
}

.hero__glow {
  position: absolute;
  inset: -20% -10% auto auto;
  width: 60vw;
  height: 60vw;
  max-width: 720px;
  max-height: 720px;
  background: radial-gradient(circle, rgba(228, 4, 26, 0.35) 0%, rgba(228, 4, 26, 0) 70%);
  filter: blur(10px);
  pointer-events: none;
}

.bubbles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.bubbles span {
  position: absolute;
  bottom: -40px;
  width: var(--size, 10px);
  height: var(--size, 10px);
  border-radius: 50%;
  background: rgba(247, 247, 245, 0.18);
  border: 1px solid rgba(247, 247, 245, 0.25);
  left: var(--x, 50%);
  animation: rise var(--dur, 10s) linear infinite;
  animation-delay: var(--delay, 0s);
}

.bubbles span:nth-child(1) { --x: 8%; --size: 8px; --dur: 9s; --delay: 0s; }
.bubbles span:nth-child(2) { --x: 18%; --size: 14px; --dur: 12s; --delay: 1.5s; }
.bubbles span:nth-child(3) { --x: 28%; --size: 6px; --dur: 8s; --delay: 3s; }
.bubbles span:nth-child(4) { --x: 40%; --size: 10px; --dur: 11s; --delay: 0.5s; }
.bubbles span:nth-child(5) { --x: 55%; --size: 16px; --dur: 13s; --delay: 2s; }
.bubbles span:nth-child(6) { --x: 65%; --size: 7px; --dur: 9.5s; --delay: 4s; }
.bubbles span:nth-child(7) { --x: 74%; --size: 12px; --dur: 10.5s; --delay: 1s; }
.bubbles span:nth-child(8) { --x: 83%; --size: 9px; --dur: 8.5s; --delay: 3.5s; }
.bubbles span:nth-child(9) { --x: 92%; --size: 15px; --dur: 12.5s; --delay: 2.5s; }
.bubbles span:nth-child(10) { --x: 48%; --size: 5px; --dur: 7.5s; --delay: 5s; }

@keyframes rise {
  from {
    transform: translateY(0) translateX(0);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  to {
    transform: translateY(-110vh) translateX(12px);
    opacity: 0;
  }
}

.hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: clamp(2rem, 5vw, 4rem);
  width: 100%;
}

.eyebrow {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}

.hero__title {
  font-size: clamp(2.6rem, 6vw, 4.5rem);
  line-height: 1.02;
}

.hero__lede {
  max-width: 46ch;
  font-size: 1.1rem;
  color: var(--silver);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1rem;
}

.hero__stage {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.hero__can {
  width: min(280px, 60vw);
  height: auto;
  filter: drop-shadow(0 30px 40px rgba(0, 0, 0, 0.6));
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50% { transform: translateY(-16px) rotate(2deg); }
}

.scroll-cue {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 42px;
  border: 2px solid var(--line);
  border-radius: 999px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.scroll-cue span {
  width: 4px;
  height: 8px;
  border-radius: 999px;
  background: var(--red);
  animation: scrollcue 1.8s ease-in-out infinite;
}

@keyframes scrollcue {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(12px); opacity: 0; }
  100% { transform: translateY(12px); opacity: 0; }
}

/* ---------------------------------- Taste ---------------------------------- */

.taste__grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 1.75rem 0 0;
  display: grid;
  gap: 0.85rem;
}

.feature-list li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  color: var(--white);
  font-weight: 600;
}

.feature-list__icon {
  flex: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(228, 4, 26, 0.15);
  color: var(--red);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 900;
}

.taste__visual {
  position: relative;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.taste__ring {
  position: absolute;
  inset: 15%;
  border: 1.5px solid var(--line);
  border-radius: 50%;
}

.taste__ring--outer {
  inset: 0;
  border-color: rgba(228, 4, 26, 0.25);
  animation: spin 24s linear infinite;
  border-style: dashed;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.taste__badge {
  position: relative;
  width: 55%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--red-light), var(--red-dark));
  color: #fff;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 20px 50px -18px rgba(228, 4, 26, 0.65);
}

.taste__badge small {
  font-size: 0.9rem;
  font-weight: 700;
  margin-left: 0.35rem;
  align-self: center;
}

/* ---------------------------------- Facts ---------------------------------- */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.stat-card {
  padding: 2rem 1.5rem;
  border-radius: 1.25rem;
  background: var(--panel);
  border: 1px solid var(--line);
  text-align: center;
}

.stat-card__number {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.2rem, 4vw, 3rem);
  color: var(--white);
}

.stat-card__number small {
  font-size: 0.45em;
  font-weight: 800;
  color: var(--red);
}

.stat-card__label {
  display: block;
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 600;
}

.facts__footnote {
  margin: 1.75rem 0 0;
  font-size: 0.8rem;
  color: var(--muted);
}

/* ---------------------------------- Flavors ---------------------------------- */

.flavors__grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2rem, 5vw, 3rem);
  align-items: center;
}

.flavor-picker {
  display: grid;
  gap: 0.85rem;
}

.flavor-swatch {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 1.25rem;
  border-radius: 1rem;
  border: 1px solid var(--line);
  background: var(--panel);
  text-align: left;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease), transform 0.2s var(--ease);
}

.flavor-swatch:hover,
.flavor-swatch:focus-visible {
  transform: translateX(4px);
  border-color: var(--accent);
}

.flavor-swatch.is-active {
  background: var(--panel-2);
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent) inset;
}

.flavor-swatch__dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
  box-shadow: 0 0 10px color-mix(in srgb, var(--accent) 70%, transparent);
}

.flavor-stage {
  position: relative;
  display: grid;
  justify-items: center;
  text-align: center;
  padding: clamp(2rem, 4vw, 3rem);
  border-radius: 1.5rem;
  border: 1px solid var(--line);
  background: var(--panel);
  overflow: hidden;
}

.flavor-stage__glow {
  position: absolute;
  inset: -20%;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 45%, transparent) 0%, transparent 65%);
  transition: background 0.4s var(--ease);
  pointer-events: none;
}

.flavor-stage__can {
  position: relative;
  width: min(180px, 42vw);
  transition: filter 0.3s var(--ease);
  filter: drop-shadow(0 20px 30px rgba(0, 0, 0, 0.55));
}

.flavor-stage__info {
  position: relative;
  margin-top: 1.5rem;
  max-width: 32ch;
}

.flavor-stage__info h3 {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}

/* ---------------------------------- Stories ---------------------------------- */

.slider {
  max-width: 760px;
  margin-inline: auto;
  text-align: center;
}

.slider__track {
  position: relative;
  min-height: 220px;
}

.testimonial {
  margin: 0;
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease), visibility 0.5s;
}

.testimonial.is-active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  position: relative;
}

.testimonial__stars {
  color: var(--red);
  letter-spacing: 0.2em;
  margin-bottom: 1rem;
}

.testimonial blockquote {
  margin: 0 0 1.25rem;
  font-size: clamp(1.2rem, 2.6vw, 1.6rem);
  font-weight: 600;
  color: var(--white);
  line-height: 1.4;
}

.testimonial figcaption {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.9rem;
}

.slider__controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
}

.slider__btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--panel);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.slider__btn:hover,
.slider__btn:focus-visible {
  border-color: var(--red);
  transform: translateY(-2px);
}

.slider__dots {
  display: flex;
  gap: 0.5rem;
}

.slider__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: var(--line);
  cursor: pointer;
  padding: 0;
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}

.slider__dot.is-active {
  background: var(--red);
  transform: scale(1.3);
}

/* ---------------------------------- Planet ---------------------------------- */

.planet {
  background: linear-gradient(180deg, var(--black) 0%, var(--black-soft) 100%);
}

.planet__grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.planet__copy {
  max-width: 48ch;
}

.planet__list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 0.85rem;
}

.planet__list li {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  font-weight: 600;
}

.planet__meter {
  padding: 2rem;
  border-radius: 1.25rem;
  border: 1px solid var(--line);
  background: var(--panel);
}

.meter {
  height: 14px;
  border-radius: 999px;
  background: var(--panel-2);
  overflow: hidden;
  border: 1px solid var(--line);
}

.meter__fill {
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--red-dark), var(--red-light));
  transition: width 1.4s var(--ease);
}

.meter__label {
  margin: 1rem 0 0;
  font-size: 0.9rem;
  color: var(--silver);
}

/* ---------------------------------- Signup ---------------------------------- */

.signup__panel {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 3rem);
  align-items: center;
  padding: clamp(2rem, 5vw, 3.5rem);
  border-radius: 1.75rem;
  background: linear-gradient(135deg, var(--panel) 0%, var(--black-soft) 100%);
  border: 1px solid var(--line);
}

.signup__copy p {
  margin-bottom: 0;
}

.signup__form {
  display: grid;
  gap: 0.85rem;
}

.signup__form input {
  padding: 0.9rem 1.1rem;
  border-radius: 0.75rem;
  border: 1px solid var(--line);
  background: var(--black-soft);
  color: var(--white);
  font-size: 1rem;
}

.signup__form input:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
}

.signup__form .btn {
  width: 100%;
}

.signup__status {
  min-height: 1.2em;
  margin: 0;
  font-size: 0.85rem;
  font-weight: 600;
}

.signup__status.is-success {
  color: #4ade80;
}

.signup__status.is-error {
  color: var(--red-light);
}

/* ---------------------------------- Footer ---------------------------------- */

.site-footer {
  padding-block: 3rem 3.5rem;
  border-top: 1px solid var(--line);
}

.site-footer__top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.site-footer__top nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.site-footer__top nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 600;
}

.site-footer__top nav a:hover {
  color: var(--white);
}

.site-footer__legal {
  font-size: 0.78rem;
  color: var(--muted);
  max-width: 70ch;
  line-height: 1.6;
}

.site-footer__meta {
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 0;
}

/* ---------------------------------- Reveal-on-scroll ---------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

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

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

  .hero__can,
  .bubbles span,
  .taste__ring--outer,
  .scroll-cue span {
    animation: none !important;
  }
}

/* ---------------------------------- Responsive ---------------------------------- */

@media (max-width: 960px) {
  .nav__links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(5, 5, 5, 0.99);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem var(--shell-pad) 1rem;
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.9);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s;
  }

  .nav__links.is-open {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
  }

  .nav__links a {
    padding: 0.75rem 0;
    width: 100%;
    border-bottom: 1px solid var(--line);
  }

  .nav__toggle {
    display: flex;
  }

  .nav__actions .btn--sm {
    display: none;
  }

  .hero__grid,
  .taste__grid,
  .flavors__grid,
  .planet__grid,
  .signup__panel {
    grid-template-columns: 1fr;
  }

  .hero__stage {
    order: -1;
  }

  .stat-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .nav__brand {
    font-size: 0.85rem;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .site-footer__top {
    flex-direction: column;
    align-items: flex-start;
  }
}