/* Smart China Trade — sct- prefix (light editorial B2B) */
*, *::before, *::after { box-sizing: border-box; }
html, body {
  width: 100%; max-width: 100vw; min-width: 300px; overflow-x: hidden;
  margin: 0; padding: 0;
  font-family: 'Inter', 'Manrope', system-ui, sans-serif;
  background: #FAF7F2; color: #1C1917; line-height: 1.6;
}
body { padding-top: 76px; }
svg, img, canvas { max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; }

.sct-container { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 16px; }

:root {
  --sct-bg: #FAF7F2;
  --sct-bg2: #F2ECE1;
  --sct-card: #FFFFFF;
  --sct-border: #D6D0C4;
  --sct-text: #1C1917;
  --sct-muted: #44403C;
  --sct-accent: #D94E1F;
  --sct-accent2: #EA580C;
  --sct-green: #15803D;
  --sct-ochre: #B45309;
  --sct-shadow: 0 8px 24px rgba(28,25,23,0.08);
}

/* Header */
.sct-header { position: fixed; top: 0; left: 0; right: 0; width: 100%; z-index: 1000; background: rgba(250,247,242,0.92); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--sct-border); transition: transform 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease; }
.sct-header__inner { display: flex !important; align-items: center !important; justify-content: space-between !important; width: 100% !important; max-width: 1240px !important; padding: 12px 16px !important; gap: 16px; margin: 0 auto; }
.sct-logo { display: inline-flex !important; align-items: center !important; gap: 10px !important; white-space: nowrap !important; flex-shrink: 0 !important; font-size: clamp(1rem, 4vw, 1.35rem) !important; line-height: 1.1 !important; font-weight: 700; color: var(--sct-text); }
.sct-logo__mark { width: 38px; height: 38px; flex-shrink: 0; }
.sct-logo__accent { color: var(--sct-accent); }
.sct-nav__list { display: flex; gap: 22px; list-style: none; margin: 0; padding: 0; }
.sct-nav__link { font-size: 0.9rem; color: var(--sct-muted); transition: color .2s; }
.sct-nav__link:hover { color: var(--sct-accent); }
.sct-burger { display: none; flex-direction: column; gap: 5px; padding: 8px; margin-left: auto !important; flex-shrink: 0 !important; }
.sct-burger__line { width: 24px; height: 2px; background: var(--sct-text); }
.sct-mobile-menu { display: none !important; flex-direction: column; gap: 0; background: var(--sct-bg); border-top: 1px solid var(--sct-border); }
.sct-mobile-menu.sct-open { display: flex !important; }
.sct-mobile-menu a { padding: 12px 16px; border-bottom: 1px solid var(--sct-border); font-size: 0.9rem; color: var(--sct-text); }

/* Hero dashboard */
.sct-hero { padding: 40px 0 60px; background: linear-gradient(180deg, var(--sct-bg2), var(--sct-bg)); }
.sct-hero__topbar {
  display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; margin-bottom: 28px;
}
.sct-topcard { background: var(--sct-card); border: 1px solid var(--sct-border); border-radius: 12px; padding: 14px 16px; box-shadow: var(--sct-shadow); }
.sct-topcard__label { font-size: 0.75rem; color: var(--sct-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 4px; }
.sct-topcard__value { font-size: 1.05rem; font-weight: 700; color: var(--sct-text); }
.sct-topcard__value span { color: var(--sct-accent); }
.sct-hero__grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 32px; align-items: center; }
.sct-hero__title { font-size: clamp(2rem,5vw,3.2rem); line-height: 1.1; margin: 0 0 16px; font-weight: 800; color: var(--sct-text); }
.sct-hero__title span { color: var(--sct-accent); }
.sct-hero__subtitle { font-size: 1.05rem; color: var(--sct-muted); margin-bottom: 24px; max-width: 560px; }
.sct-hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 24px; }
.sct-hero__svg { width: 100%; max-width: 560px; margin: 0 auto; }

/* Buttons */
.sct-btn {
  font-size: clamp(0.75rem,2.5vw,0.95rem);
  padding: clamp(10px,2.2vw,14px) clamp(16px,3.5vw,24px);
  white-space: normal; line-height: 1.25; text-align: center; max-width: 100%;
  font-weight: 600; border-radius: 10px;
  background: var(--sct-accent); color: #fff;
  box-shadow: 0 6px 18px rgba(217,78,31,0.25);
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  transition: transform .2s, box-shadow .2s;
}
.sct-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(217,78,31,0.35); }
.sct-btn--ghost { background: transparent; color: var(--sct-accent); border: 1px solid var(--sct-accent); box-shadow: none; }
.sct-btn--ghost:hover { background: rgba(217,78,31,0.08); }
.sct-btn--green { background: var(--sct-green); box-shadow: 0 6px 18px rgba(21,128,61,0.25); }
.sct-btn--full { width: 100%; }

/* Feature strip */
.sct-features { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; margin-top: 28px; }
.sct-feature { display: flex; gap: 12px; align-items: flex-start; background: var(--sct-card); border: 1px solid var(--sct-border); border-radius: 12px; padding: 16px; box-shadow: var(--sct-shadow); }
.sct-feature__icon { width: 36px; height: 36px; flex-shrink: 0; color: var(--sct-accent); }
.sct-feature__title { font-weight: 700; color: var(--sct-text); margin-bottom: 4px; font-size: 0.95rem; }
.sct-feature__desc { font-size: 0.85rem; color: var(--sct-muted); }

/* Sections */
.sct-section { padding: 70px 0; }
.sct-section__head { text-align: center; margin-bottom: 40px; }
.sct-section__title { font-size: clamp(1.6rem,4vw,2.4rem); margin: 0 0 12px; font-weight: 800; color: var(--sct-text); }
.sct-section__title span { color: var(--sct-accent); }
.sct-section__desc { color: var(--sct-muted); max-width: 640px; margin: 0 auto; }

/* Services */
.sct-services__grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; }
.sct-service { background: var(--sct-card); border: 1px solid var(--sct-border); border-radius: 14px; padding: 24px; box-shadow: var(--sct-shadow); transition: .2s; }
.sct-service:hover { border-color: var(--sct-accent); transform: translateY(-4px); }
.sct-service__icon { width: 56px; height: 56px; margin-bottom: 14px; color: var(--sct-accent); }
.sct-service__title { font-size: 1.15rem; margin: 0 0 8px; color: var(--sct-text); }
.sct-service__desc { font-size: 0.92rem; color: var(--sct-muted); margin-bottom: 12px; }
.sct-service__features { list-style: none; padding: 0; margin: 0 0 12px; font-size: 0.85rem; color: var(--sct-muted); }
.sct-service__features li { padding: 4px 0; padding-left: 16px; position: relative; }
.sct-service__features li::before { content: "▸"; position: absolute; left: 0; color: var(--sct-accent); }
.sct-service__price { font-weight: 700; color: var(--sct-green); }

/* Calculator */
.sct-calc__grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 24px; }
.sct-calc__panel { background: var(--sct-card); border: 1px solid var(--sct-border); border-radius: 16px; padding: 28px; box-shadow: var(--sct-shadow); }
.sct-fieldset { border: none; padding: 0; margin: 0 0 20px; }
.sct-fieldset__legend { font-weight: 700; color: var(--sct-accent); margin-bottom: 14px; font-size: 1rem; }
.sct-field { margin-bottom: 16px; }
.sct-label { display: block; font-size: 0.9rem; margin-bottom: 6px; color: var(--sct-muted); }
.sct-range { width: 100%; accent-color: var(--sct-accent); }
.sct-range__output { text-align: right; font-weight: 700; color: var(--sct-accent); margin-top: 4px; }
.sct-select, .sct-input, .sct-textarea {
  width: 100%; max-width: 100%; min-width: 0; box-sizing: border-box;
  padding: 10px 12px; background: #fff; border: 1px solid var(--sct-border); color: var(--sct-text); font-size: 0.95rem; border-radius: 8px;
}
.sct-textarea { resize: vertical; min-height: 90px; }
.sct-modules { display: flex; flex-direction: column; gap: 8px; }
.sct-module { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border: 1px solid var(--sct-border); border-radius: 8px; cursor: pointer; background: #fff; }
.sct-module input { accent-color: var(--sct-accent); }
.sct-module__cost { margin-left: auto; font-size: 0.8rem; color: var(--sct-accent); }

/* Result */
.sct-result__card { background: linear-gradient(160deg, #fff, var(--sct-bg2)); border: 1px solid var(--sct-border); border-radius: 16px; padding: 28px; box-shadow: var(--sct-shadow); }
.sct-result__header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.sct-result__badge { background: var(--sct-accent); color: #fff; padding: 4px 10px; border-radius: 999px; font-size: 0.75rem; font-weight: 700; }
.sct-result__mode { font-weight: 600; color: var(--sct-green); }
.sct-result__main { text-align: center; margin: 20px 0; }
.sct-result__value { font-size: clamp(2rem,6vw,3rem); font-weight: 800; color: var(--sct-accent); }
.sct-result__unit { font-size: 1.2rem; color: var(--sct-muted); }
.sct-breakdown__row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--sct-border); font-size: 0.9rem; }
.sct-breakdown__total { font-weight: 700; color: var(--sct-accent); border-bottom: none; }
.sct-result__meta { margin: 16px 0; font-size: 0.9rem; color: var(--sct-muted); }
.sct-result__meta div { padding: 4px 0; }

/* Cases */
.sct-cases__grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 20px; }
.sct-case { background: var(--sct-card); border: 1px solid var(--sct-border); border-radius: 14px; padding: 24px; box-shadow: var(--sct-shadow); }
.sct-case__badge { display: inline-block; background: rgba(217,78,31,0.1); color: var(--sct-accent); padding: 4px 10px; border-radius: 999px; font-size: 0.75rem; margin-bottom: 10px; border: 1px solid rgba(217,78,31,0.3); }
.sct-case__title { font-size: 1.1rem; margin: 0 0 10px; color: var(--sct-text); }
.sct-case__metrics { display: flex; flex-wrap: wrap; gap: 8px; font-size: 0.8rem; color: var(--sct-muted); margin-bottom: 10px; }
.sct-case__desc { font-size: 0.9rem; color: var(--sct-muted); margin-bottom: 10px; }
.sct-case__result { font-weight: 700; color: var(--sct-green); font-size: 0.9rem; }

/* About */
.sct-about__grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 30px; align-items: center; }
.sct-about__stats { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; margin: 20px 0; }
.sct-stat { background: var(--sct-card); border: 1px solid var(--sct-border); border-radius: 12px; padding: 16px; text-align: center; box-shadow: var(--sct-shadow); }
.sct-stat__value { font-size: 1.6rem; font-weight: 800; color: var(--sct-accent); }
.sct-stat__label { font-size: 0.8rem; color: var(--sct-muted); }
.sct-about__values { display: flex; flex-direction: column; gap: 12px; }
.sct-value { display: flex; gap: 12px; align-items: flex-start; }
.sct-value__icon { width: 36px; height: 36px; flex-shrink: 0; color: var(--sct-accent); }
.sct-value__title { font-weight: 700; color: var(--sct-text); margin-bottom: 4px; }
.sct-value__desc { font-size: 0.88rem; color: var(--sct-muted); }
.sct-about__visual { text-align: center; }

/* Contact form */
.sct-form__grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.sct-field--full { grid-column: 1 / -1; }
.sct-checkbox { display: flex; flex-direction: row; align-items: flex-start; gap: 10px; }
.sct-checkbox input[type="checkbox"] { width: 20px; height: 20px; flex-shrink: 0; accent-color: var(--sct-accent); }
.sct-checkbox span { font-size: 0.85rem; color: var(--sct-muted); }

/* Contacts */
.sct-contacts { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 16px; margin-top: 30px; }
.sct-contact-card { background: var(--sct-card); border: 1px solid var(--sct-border); border-radius: 12px; padding: 18px; text-align: center; box-shadow: var(--sct-shadow); }
.sct-contact-card__title { font-weight: 700; color: var(--sct-accent); margin-bottom: 6px; font-size: 0.9rem; }
.sct-contact-card__value { display: block; font-size: 0.9rem; margin: 4px 0; color: var(--sct-text); }
.sct-contact-card__sub { font-size: 0.75rem; color: var(--sct-muted); }

/* Footer */
.sct-footer { background: #F2ECE1; padding: 50px 0 20px; margin-top: 40px; border-top: 1px solid var(--sct-border); }
.sct-footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 30px; }
.sct-footer__tagline { color: var(--sct-muted); font-size: 0.9rem; margin: 12px 0; }
.sct-footer__col-title { color: var(--sct-accent); font-weight: 700; margin-bottom: 10px; }
.sct-footer__col ul { list-style: none; padding: 0; margin: 0; }
.sct-footer__col li { padding: 4px 0; font-size: 0.85rem; color: var(--sct-muted); }
.sct-footer__col a:hover { color: var(--sct-accent); }
.sct-footer__bottom { border-top: 1px solid var(--sct-border); margin-top: 30px; padding-top: 16px; text-align: center; font-size: 0.8rem; color: var(--sct-muted); }

/* Modal */
.sct-modal { position: fixed; inset: 0; z-index: 100; display: none; }
.sct-modal.sct-open { display: flex; align-items: center; justify-content: center; }
.sct-modal__overlay { position: absolute; inset: 0; background: rgba(28,25,23,0.6); }
.sct-modal__content { position: relative; background: var(--sct-card); border: 1px solid var(--sct-border); border-radius: 16px; padding: 28px; max-width: 480px; width: 90%; max-height: 90vh; overflow-y: auto; box-shadow: var(--sct-shadow); }
.sct-modal__close { position: absolute; top: 12px; right: 16px; font-size: 1.6rem; color: var(--sct-text); }
.sct-modal__title { margin: 0 0 16px; color: var(--sct-accent); }

/* Responsive */
@media (max-width: 992px) {
  .sct-hero__topbar { grid-template-columns: minmax(0,1fr) !important; }
  .sct-hero__grid, .sct-calc__grid, .sct-about__grid, .sct-form__grid {
    grid-template-columns: minmax(0,1fr) !important; flex-direction: column !important; width: 100% !important;
  }
  .sct-services__grid { grid-template-columns: minmax(0,1fr) !important; }
  .sct-cases__grid { grid-template-columns: minmax(0,1fr) !important; }
  .sct-contacts { grid-template-columns: repeat(2, minmax(0,1fr)) !important; }
  .sct-footer__grid { grid-template-columns: 1fr !important; }
  .sct-features { grid-template-columns: minmax(0,1fr) !important; }
  .sct-nav { display: none; }
  .sct-burger { display: flex; }
  .sct-mobile-menu { display: none !important; }
  .sct-mobile-menu.sct-open { display: flex !important; }
  input, select, textarea, .sct-input, .sct-select, .sct-textarea, button, .sct-btn {
    width: 100%; max-width: 100%; min-width: 0; white-space: normal; word-break: normal; box-sizing: border-box;
  }
  .sct-checkbox { display: flex; flex-direction: row; align-items: flex-start; gap: 10px; }
  .sct-checkbox input[type="checkbox"] { width: 20px; height: 20px; flex-shrink: 0; }
}
@media (max-width: 768px) {
  .sct-contacts { grid-template-columns: 1fr !important; }
  .sct-services__grid { grid-template-columns: minmax(0,1fr) !important; }
  .sct-hero__topbar { grid-template-columns: minmax(0,1fr) !important; }
}
@media (min-width: 993px) {
  .sct-services__grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .sct-cases__grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .sct-contacts { grid-template-columns: repeat(4, minmax(0,1fr)); }
  .sct-footer__grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
  .sct-hero__grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .sct-calc__grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .sct-about__grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .sct-form__grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .sct-features { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .sct-hero__topbar { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .sct-mobile-menu { display: none !important; }
  .sct-burger { display: none; }
  .sct-nav { display: block; }
}
.sct-btn, button, .sct-module {
  font-size: clamp(0.75rem,2.5vw,0.95rem);
  padding: clamp(10px,2.2vw,14px) clamp(16px,3.5vw,24px);
  white-space: normal; line-height: 1.25; text-align: center; max-width: 100%;
  box-sizing: border-box;
}