/* ── CUSTOM PROPERTIES ── */
:root {
  --ac: #e8372a;
  --ac-dk: #c42d22;
  --ac-lt: rgba(232, 55, 42, 0.12);
  --ac-gl: rgba(232, 55, 42, 0.3);
  --bg: #fff;
  --bg2: #f6f7fb;
  --sur: #fff;
  --sur2: #eef0f7;
  --tx: #0d0f1a;
  --tx2: #566079;
  --tx3: #8b95ac;
  --bd: #dde1ef;
  --sh0: 0 1px 8px rgba(0, 0, 0, 0.06);
  --sh: 0 2px 16px rgba(0, 0, 0, 0.08);
  --sh2: 0 8px 36px rgba(0, 0, 0, 0.12);
  --r: 12px;
  --r2: 8px;
  --r3: 20px;
  --fh: "Sora", sans-serif;
  --fb: "DM Sans", sans-serif;
  --nh: 64px;
}
[data-theme="dark"] {
  --bg: #0b0c14;
  --bg2: #111220;
  --sur: #181926;
  --sur2: #1e1f2e;
  --tx: #eef0f8;
  --tx2: #8f9ab2;
  --tx3: #606880;
  --bd: #282a3e;
  --sh0: 0 1px 8px rgba(0, 0, 0, 0.35);
  --sh: 0 2px 16px rgba(0, 0, 0, 0.4);
  --sh2: 0 8px 36px rgba(0, 0, 0, 0.55);
}
/* ── RESET ── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--fb);
  background: var(--bg);
  color: var(--tx);
  line-height: 1.65;
  overflow-x: hidden;
  transition:
    background 0.25s,
    color 0.25s;
}
a {
  color: inherit;
  text-decoration: none;
}
ul,
ol {
  list-style: none;
}
img {
  max-width: 100%;
  display: block;
}
button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  color: inherit;
}
input,
select {
  font-family: inherit;
}
.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;
}

/* ── NAVBAR ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nh);
  background: var(--sur);
  border-bottom: 1px solid var(--bd);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 10px;
  box-shadow: var(--sh0);
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--fh);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--tx);
  flex-shrink: 0;
}
.nav-logo img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  object-fit: cover;
}
.nav-logo em {
  font-style: normal;
  color: var(--ac);
}
.nav-sp {
  flex: 1;
}
.nav-home {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--r2);
  font-family: var(--fh);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--tx2);
  background: var(--sur2);
  border: 1px solid var(--bd);
  transition:
    background 0.2s,
    color 0.2s,
    border-color 0.2s;
  white-space: nowrap;
}
.nav-home:hover {
  background: var(--ac-lt);
  color: var(--ac);
  border-color: var(--ac);
}
.nav-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--r2);
  background: var(--sur2);
  border: 1px solid var(--bd);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  flex-shrink: 0;
  transition:
    background 0.2s,
    border-color 0.2s;
}
.nav-icon:hover {
  background: var(--ac-lt);
  border-color: var(--ac);
}
.ham-lines {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 18px;
}
.ham-lines span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--tx);
  border-radius: 2px;
  transition:
    transform 0.25s,
    opacity 0.25s;
}
.ham-open .ham-lines span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.ham-open .ham-lines span:nth-child(2) {
  opacity: 0;
}
.ham-open .ham-lines span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── OVERLAY ── */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(2px);
  z-index: 150;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.overlay.open {
  opacity: 1;
  pointer-events: all;
}

/* ── DRAWER ── */
.drawer {
  position: fixed;
  top: 0;
  right: -320px;
  width: 300px;
  height: 100dvh;
  background: var(--sur);
  z-index: 200;
  display: flex;
  flex-direction: column;
  box-shadow: -4px 0 32px rgba(0, 0, 0, 0.25);
  transition: right 0.32s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
}
.drawer.open {
  right: 0;
}
.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--bd);
}
.drawer-head h2 {
  font-family: var(--fh);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--tx);
}
.drawer-close {
  width: 34px;
  height: 34px;
  border-radius: var(--r2);
  background: var(--sur2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--tx2);
  transition:
    background 0.2s,
    color 0.2s;
}
.drawer-close:hover {
  background: var(--ac-lt);
  color: var(--ac);
}
.drawer-nav {
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}
.drawer-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: var(--r2);
  font-family: var(--fh);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--tx2);
  transition:
    background 0.2s,
    color 0.2s;
}
.drawer-nav a:hover {
  background: var(--ac-lt);
  color: var(--ac);
}
.dn-ico {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--sur2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  flex-shrink: 0;
}

/* ── BREADCRUMB ── */
.breadcrumb {
  padding: 10px 24px;
  background: var(--bg2);
  border-bottom: 1px solid var(--bd);
}
.breadcrumb ol {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  max-width: 1200px;
  margin: 0 auto;
  font-size: 0.78rem;
  color: var(--tx2);
}
.breadcrumb a:hover {
  color: var(--ac);
}
.bc-sep {
  color: var(--tx3);
}
.bc-cur {
  color: var(--tx);
  font-weight: 500;
}

/* ── HERO ── */
.hero {
  padding: 56px 24px 44px;
  background: linear-gradient(175deg, var(--bg2) 0%, var(--bg) 100%);
  text-align: center;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--ac-lt);
  color: var(--ac);
  border-radius: 100px;
  padding: 5px 16px;
  font-size: 0.73rem;
  font-family: var(--fh);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 18px;
}
.hero-title {
  font-family: var(--fh);
  font-size: clamp(1.9rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--tx);
  margin-bottom: 14px;
}
.hero-title em {
  font-style: normal;
  color: var(--ac);
}
.hero-desc {
  font-size: 1.05rem;
  color: var(--tx2);
  max-width: 580px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

/* ── TOOL CARD ── */
.tool-card {
  max-width: 820px;
  margin: 0 auto;
  background: var(--sur);
  border-radius: var(--r3);
  box-shadow: var(--sh2);
  padding: 36px;
  border: 1px solid var(--bd);
}
.url-row {
  display: flex;
  gap: 10px;
}
.url-input {
  flex: 1;
  height: 52px;
  padding: 0 16px;
  border: 2px solid var(--bd);
  border-radius: var(--r);
  background: var(--bg);
  color: var(--tx);
  font-size: 1rem;
  outline: none;
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
}
.url-input:focus {
  border-color: var(--ac);
  box-shadow: 0 0 0 3px var(--ac-lt);
}
.url-input::placeholder {
  color: var(--tx3);
}
.url-input.err {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}
.btn-convert {
  height: 52px;
  padding: 0 22px;
  background: var(--ac);
  color: #fff;
  border-radius: var(--r);
  font-family: var(--fh);
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  flex-shrink: 0;
  box-shadow: 0 4px 14px var(--ac-gl);
  transition:
    background 0.2s,
    transform 0.15s,
    opacity 0.2s;
}
.btn-convert:hover:not(:disabled) {
  background: var(--ac-dk);
  transform: translateY(-1px);
}
.btn-convert:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.divider {
  height: 1px;
  background: var(--bd);
  margin: 20px 0;
}
/* Advanced toggle */
.adv-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 0;
  font-family: var(--fh);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--tx2);
  transition: color 0.2s;
}
.adv-toggle:hover {
  color: var(--ac);
}
.adv-arr {
  font-size: 0.85rem;
  transition: transform 0.25s;
}
.adv-toggle.open .adv-arr {
  transform: rotate(180deg);
}
.adv-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.adv-panel.open {
  max-height: 480px;
}
.adv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  padding-top: 16px;
}
.opt-label {
  display: block;
  font-family: var(--fh);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--tx3);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 5px;
}
.opt-select {
  width: 100%;
  height: 40px;
  padding: 0 30px 0 11px;
  border: 1.5px solid var(--bd);
  border-radius: var(--r2);
  background: var(--bg);
  color: var(--tx);
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.2s;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath fill='%238b95ac' d='M5 6L0 0h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}
.opt-select:focus {
  border-color: var(--ac);
}
/* Number input */
.num-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.num-input {
  width: 100%;
  height: 40px;
  padding: 0 36px 0 11px;
  border: 1.5px solid var(--bd);
  border-radius: var(--r2);
  background: var(--bg);
  color: var(--tx);
  font-family: var(--fb);
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.2s;
}
.num-input::-webkit-inner-spin-button,
.num-input::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.num-input:focus {
  border-color: var(--ac);
}
.num-unit {
  position: absolute;
  right: 10px;
  font-family: var(--fh);
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--tx3);
  pointer-events: none;
}
.adv-hint {
  font-size: 0.72rem;
  color: var(--tx3);
  font-family: var(--fh);
  line-height: 1.55;
  margin-top: 12px;
}
.adv-hint strong {
  color: var(--tx2);
}
/* Progress */
.prog-box {
  display: none;
  margin-top: 20px;
  background: var(--bg2);
  border: 1px solid var(--bd);
  border-radius: var(--r);
  padding: 18px 20px;
}
.prog-box.show {
  display: block;
}
.prog-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.prog-lbl {
  font-family: var(--fh);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--tx);
  display: flex;
  align-items: center;
  gap: 8px;
}
.prog-pct {
  font-family: var(--fh);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ac);
}
.prog-track {
  height: 7px;
  background: var(--bd);
  border-radius: 100px;
  overflow: hidden;
}
.prog-fill {
  height: 100%;
  border-radius: 100px;
  background: linear-gradient(90deg, var(--ac-dk), var(--ac));
  width: 0%;
  transition: width 0.5s ease;
}
.prog-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin-top: 12px;
}
.ps {
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: var(--fh);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--tx3);
}
.ps .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--bd);
  flex-shrink: 0;
}
.ps.done {
  color: #22c55e;
}
.ps.done .dot {
  background: #22c55e;
}
.ps.active {
  color: var(--ac);
}
.ps.active .dot {
  background: var(--ac);
  animation: blink 1.1s ease-in-out infinite;
}
@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.35;
  }
}
/* Error */
.err-box {
  display: none;
  margin-top: 20px;
  background: rgba(239, 68, 68, 0.07);
  border: 1.5px solid rgba(239, 68, 68, 0.28);
  border-radius: var(--r);
  padding: 16px 20px;
}
.err-box.show {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.err-ico {
  font-size: 1.15rem;
  flex-shrink: 0;
  margin-top: 1px;
}
.err-title {
  font-family: var(--fh);
  font-weight: 700;
  font-size: 0.88rem;
  color: #dc2626;
  margin-bottom: 3px;
}
.err-desc {
  font-size: 0.8rem;
  color: var(--tx2);
  line-height: 1.55;
}
/* Result */
.res-box {
  display: none;
  margin-top: 20px;
  background: rgba(34, 197, 94, 0.07);
  border: 1.5px solid rgba(34, 197, 94, 0.28);
  border-radius: var(--r);
  padding: 18px 20px;
}
.res-box.show {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.res-ico {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(34, 197, 94, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}
.res-info {
  flex: 1;
  min-width: 0;
}
.res-title {
  font-family: var(--fh);
  font-weight: 700;
  font-size: 0.95rem;
  color: #16a34a;
  margin-bottom: 2px;
}
.res-sub {
  font-size: 0.78rem;
  color: var(--tx2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.btn-dl {
  height: 42px;
  padding: 0 16px;
  background: #22c55e;
  color: #fff;
  border-radius: var(--r2);
  font-family: var(--fh);
  font-weight: 700;
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  gap: 6px;
  transition:
    background 0.2s,
    transform 0.15s;
  white-space: nowrap;
}
.btn-dl:hover {
  background: #16a34a;
  transform: translateY(-1px);
}
.btn-open {
  height: 42px;
  padding: 0 13px;
  background: var(--sur2);
  border: 1.5px solid var(--ac);
  border-radius: var(--r2);
  font-family: var(--fh);
  font-weight: 600;
  font-size: 0.82rem;
  color: var(--ac);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: background 0.2s;
  white-space: nowrap;
}
.btn-open:hover {
  background: var(--ac-lt);
}
.btn-again {
  height: 42px;
  padding: 0 13px;
  background: var(--sur2);
  border: 1px solid var(--bd);
  border-radius: var(--r2);
  font-family: var(--fh);
  font-weight: 600;
  font-size: 0.82rem;
  color: var(--tx2);
  display: flex;
  align-items: center;
  gap: 6px;
  transition:
    background 0.2s,
    color 0.2s;
  white-space: nowrap;
}
.btn-again:hover {
  background: var(--bd);
  color: var(--tx);
}
/* Tips */
.tips {
  margin-top: 18px;
  padding: 13px 16px;
  background: var(--bg2);
  border: 1px solid var(--bd);
  border-radius: var(--r2);
}
.tips b {
  display: block;
  font-family: var(--fh);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--tx3);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 7px;
}
.tips li {
  display: flex;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--tx3);
  margin-bottom: 4px;
}
.tips li::before {
  content: "•";
  color: var(--ac);
  flex-shrink: 0;
}
.info-note {
  margin-top: 12px;
  padding: 11px 14px;
  background: rgba(234, 179, 8, 0.07);
  border: 1px solid rgba(234, 179, 8, 0.22);
  border-radius: var(--r2);
  font-size: 0.77rem;
  color: var(--tx2);
  line-height: 1.55;
}
.info-note strong {
  color: #b45309;
  font-weight: 600;
}
/* Spinner */
.spin {
  width: 15px;
  height: 15px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: sp 0.7s linear infinite;
  flex-shrink: 0;
}
@keyframes sp {
  to {
    transform: rotate(360deg);
  }
}

/* ── SECTIONS ── */
.sec {
  padding: 80px 24px;
}
.sec-alt {
  background: var(--bg2);
}
.inner {
  max-width: 1200px;
  margin: 0 auto;
}
.sec-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--ac-lt);
  color: var(--ac);
  border-radius: 100px;
  padding: 5px 14px;
  font-size: 0.7rem;
  font-family: var(--fh);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 12px;
}
.sec-title {
  font-family: var(--fh);
  font-size: clamp(1.5rem, 4vw, 2.3rem);
  font-weight: 800;
  color: var(--tx);
  margin-bottom: 12px;
  line-height: 1.2;
}
.sec-title em {
  font-style: normal;
  color: var(--ac);
}
.sec-desc {
  font-size: 1rem;
  color: var(--tx2);
  max-width: 660px;
  line-height: 1.75;
}
/* What is it */
.what-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-top: 44px;
}
.what-body p {
  font-size: 0.93rem;
  color: var(--tx2);
  line-height: 1.8;
  margin-bottom: 14px;
}
.what-body strong {
  color: var(--tx);
}
.flow-card {
  background: var(--sur);
  border-radius: var(--r3);
  border: 1px solid var(--bd);
  padding: 28px;
  box-shadow: var(--sh);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.flow-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}
.flow-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.flow-ico {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--ac-lt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}
.flow-lbl {
  font-family: var(--fh);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--tx2);
  text-align: center;
}
.flow-arr {
  font-size: 1.1rem;
  color: var(--tx3);
}
.flow-badge {
  width: 100%;
  text-align: center;
  padding: 10px 14px;
  background: var(--ac-lt);
  border-radius: var(--r2);
  font-family: var(--fh);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ac);
}
/* Features */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 18px;
  margin-top: 44px;
}
.feat-card {
  background: var(--sur);
  border: 1px solid var(--bd);
  border-radius: var(--r);
  padding: 24px;
  box-shadow: var(--sh0);
  transition:
    transform 0.2s,
    box-shadow 0.2s,
    border-color 0.2s;
}
.feat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh2);
  border-color: rgba(232, 55, 42, 0.3);
}
.feat-ico {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--ac-lt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  margin-bottom: 14px;
}
.feat-title {
  font-family: var(--fh);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--tx);
  margin-bottom: 6px;
}
.feat-desc {
  font-size: 0.84rem;
  color: var(--tx2);
  line-height: 1.65;
}
/* Steps */
.steps {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 44px;
}
.step {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: var(--sur);
  border: 1px solid var(--bd);
  border-radius: var(--r);
  padding: 22px 24px;
  box-shadow: var(--sh0);
  transition: border-color 0.2s;
}
.step:hover {
  border-color: rgba(232, 55, 42, 0.3);
}
.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--ac);
  color: #fff;
  font-family: var(--fh);
  font-weight: 800;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 3px 10px var(--ac-gl);
}
.step-body h3 {
  font-family: var(--fh);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--tx);
  margin-bottom: 5px;
}
.step-body p {
  font-size: 0.85rem;
  color: var(--tx2);
  line-height: 1.65;
}
/* Benefits */
.ben-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 14px;
  margin-top: 44px;
}
.ben-card {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--sur);
  border: 1px solid var(--bd);
  border-radius: var(--r);
  padding: 18px;
  box-shadow: var(--sh0);
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}
.ben-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh);
}
.ben-ico {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--ac-lt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.ben-body h3 {
  font-family: var(--fh);
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--tx);
  margin-bottom: 4px;
}
.ben-body p {
  font-size: 0.8rem;
  color: var(--tx2);
  line-height: 1.55;
}
/* FAQs */
.faq-list {
  max-width: 800px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 44px;
}
.faq-item {
  background: var(--sur);
  border: 1px solid var(--bd);
  border-radius: var(--r);
  overflow: hidden;
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 18px 22px;
  font-family: var(--fh);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--tx);
  text-align: left;
  transition: background 0.2s;
}
.faq-q:hover {
  background: var(--sur2);
}
.faq-arr {
  font-size: 0.85rem;
  color: var(--tx3);
  transition: transform 0.28s;
  flex-shrink: 0;
}
.faq-item.open .faq-arr {
  transform: rotate(180deg);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-item.open .faq-a {
  max-height: 400px;
}
.faq-a p {
  padding: 0 22px 18px;
  font-size: 0.86rem;
  color: var(--tx2);
  line-height: 1.75;
}
/* Related */
.rel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 14px;
  margin-top: 44px;
}
.rel-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 9px;
  padding: 22px 14px;
  background: var(--sur);
  border: 1px solid var(--bd);
  border-radius: var(--r);
  box-shadow: var(--sh0);
  text-align: center;
  transition:
    transform 0.2s,
    box-shadow 0.2s,
    border-color 0.2s;
}
.rel-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh2);
  border-color: var(--ac);
}
.rel-emoji {
  font-size: 1.65rem;
}
.rel-name {
  font-family: var(--fh);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--tx);
}
/* Contact */
.contact-card {
  max-width: 680px;
  margin-top: 44px;
  background: var(--sur);
  border: 1px solid var(--bd);
  border-radius: var(--r3);
  padding: 36px;
  box-shadow: var(--sh);
}
.contact-intro {
  font-size: 0.93rem;
  color: var(--tx2);
  line-height: 1.75;
  margin-bottom: 26px;
}
.con-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.con-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.con-ico {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  background: var(--ac-lt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.con-item h3 {
  font-family: var(--fh);
  font-weight: 700;
  font-size: 0.83rem;
  color: var(--tx);
  margin-bottom: 3px;
}
.con-item a,
.con-item p {
  font-size: 0.8rem;
  color: var(--tx2);
}
.con-item a:hover {
  color: var(--ac);
}

/* ── FOOTER ── */
.footer {
  background: var(--bg2);
  border-top: 1px solid var(--bd);
  padding: 56px 24px 28px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--fh);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--tx);
  margin-bottom: 12px;
}
.footer-brand .logo img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}
.footer-brand .logo em {
  font-style: normal;
  color: var(--ac);
}
.footer-brand p {
  font-size: 0.83rem;
  color: var(--tx2);
  line-height: 1.7;
}
.footer-col h4 {
  font-family: var(--fh);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--tx3);
  margin-bottom: 14px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 9px;
}
.footer-col li a {
  font-size: 0.83rem;
  color: var(--tx2);
  transition: color 0.2s;
}
.footer-col li a:hover {
  color: var(--ac);
}
.footer-bottom {
  padding-top: 22px;
  border-top: 1px solid var(--bd);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom p {
  font-size: 0.77rem;
  color: var(--tx3);
}
.footer-bottom a:hover {
  color: var(--ac);
}

/* ── BTT ── */
.btt {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--ac);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 4px 14px var(--ac-gl);
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity 0.3s,
    transform 0.3s,
    background 0.2s;
  pointer-events: none;
  z-index: 90;
  border: none;
  cursor: pointer;
}
.btt.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}
.btt:hover {
  background: var(--ac-dk);
}


/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .what-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}
@media (max-width: 700px) {
  .url-row {
    flex-direction: column;
  }
  .btn-convert {
    justify-content: center;
  }
  .con-grid {
    grid-template-columns: 1fr;
  }
  .res-box.show {
    flex-direction: column;
    align-items: flex-start;
  }
  .step {
    flex-direction: column;
  }
}
@media (max-width: 600px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .sec {
    padding: 56px 18px;
  }
  .hero {
    padding: 40px 18px 32px;
  }
  .tool-card {
    padding: 20px 14px;
    border-radius: var(--r);
  }
  .nav {
    padding: 0 14px;
    gap: 8px;
  }
}
@media (max-width: 420px) {
  .nav-home-label {
    display: none;
  }
  .hero-title {
    font-size: 1.7rem;
  }
}