/* ============================================================
   VÉRITÉ 惟真 — 二手奢侈品寄卖平台
   Design tokens & styles
   ============================================================ */

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

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

body,
h1, h2, h3, h4, p, figure, blockquote, ul, ol {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

/* ---------- Tokens ---------- */
:root {
  /* Ink scale */
  --ink:        #0B0B0C;
  --ink-2:      #100E0C;
  --ink-3:      #15120F;
  --ink-4:      #1B1714;
  --paper:      #F3EFE6;

  /* Gold */
  --gold:       #E0C48C;
  --gold-mid:   #C6A667;
  --gold-light: #E4CE9B;

  /* Text */
  --t-1:        #F2EBDD;
  --t-2:        #A79E8E;
  --t-3:        #857B69;
  --t-4:        #6E6659;

  /* Lines */
  --line:       #26211C;
  --line-2:     #2A231C;
  --line-3:     #3A3025;

  /* Layout */
  --pad-x:      72px;
  --pad-y:      116px;
  --max:        1560px;
  /* 内容左右留白：窄屏用 pad-x，超宽屏自动吸收多余空间，保证背景铺满 */
  --gutter:     max(var(--pad-x), calc((100% - var(--max)) / 2));

  /* Fonts */
  --f-serif-cn: "Noto Serif SC", "Songti SC", "STSong", serif;
  --f-sans-cn:  "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --f-display:  "Playfair Display", "Times New Roman", serif;
  --f-ui:       "Inter", "Noto Sans SC", sans-serif;

  /* Motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- Base ---------- */
body {
  background: var(--ink);
  color: var(--t-1);
  font-family: var(--f-sans-cn);
  font-weight: 300;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection {
  background: var(--gold-mid);
  color: var(--ink);
}

:focus-visible {
  outline: 1px solid var(--gold);
  outline-offset: 3px;
}

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 11, 12, 0.72);
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  border-bottom: 1px solid transparent;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease);
}

.nav.is-stuck {
  background: rgba(11, 11, 12, 0.94);
  border-bottom-color: var(--line);
}

.nav__inner {
  height: 92px;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex: none;
}

.brand__en {
  font-family: var(--f-display);
  font-size: 26px;
  letter-spacing: 0.06em;
  color: #EFE3C4;
  line-height: 1;
}

.brand__cn {
  font-family: var(--f-serif-cn);
  font-size: 13px;
  letter-spacing: 0.24em;
  color: #8B8273;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 44px;
}

.nav__links a {
  position: relative;
  font-size: 14px;
  color: #C9C1B2;
  padding: 4px 0;
  transition: color 0.3s var(--ease);
}

.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--gold-mid);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease);
}

.nav__links a:hover { color: #F0E9DA; }
.nav__links a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav__right {
  display: flex;
  align-items: center;
  gap: 26px;
  flex: none;
}

.icon-btn {
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  color: #C9C1B2;
  transition: color 0.3s var(--ease);
}

.icon-btn:hover { color: var(--gold-light); }

.nav__login {
  font-size: 14px;
  color: #C9C1B2;
  transition: color 0.3s var(--ease);
}

.nav__login:hover { color: #F0E9DA; }

.nav__burger {
  display: none;
  width: 24px;
  height: 24px;
  position: relative;
}

.nav__burger span {
  position: absolute;
  left: 3px;
  width: 18px;
  height: 1px;
  background: #C9C1B2;
  transition: transform 0.35s var(--ease), opacity 0.25s var(--ease);
}

.nav__burger span:nth-child(1) { top: 9px; }
.nav__burger span:nth-child(2) { top: 15px; }

.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(3px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { transform: translateY(-3px) rotate(-45deg); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 16px 32px;
  border-radius: 1px;
  font-family: var(--f-sans-cn);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: transform 0.5s var(--ease), background 0.4s var(--ease),
              border-color 0.4s var(--ease), color 0.4s var(--ease),
              box-shadow 0.5s var(--ease);
}

.btn--gold {
  color: #141210;
  font-weight: 500;
  background: linear-gradient(115deg, #E8D4A4 0%, #C9985A 55%, #BA9A63 100%);
  box-shadow: 0 0 0 rgba(200, 160, 95, 0);
}

.btn--gold:hover {
  box-shadow: 0 12px 40px -12px rgba(200, 160, 95, 0.55);
  transform: translateY(-1px);
}

.btn--gold svg { transition: transform 0.4s var(--ease); }
.btn--gold:hover svg { transform: translateX(3px); }

.btn--outline {
  color: #D6CCB8;
  border: 1px solid #4D453A;
}

.btn--outline:hover {
  border-color: #7A6A4C;
  color: #F0E9DA;
}

.btn--ghost {
  color: var(--gold-light);
  border: 1px solid rgba(198, 166, 103, 0.55);
}

.btn--ghost:hover {
  background: rgba(198, 166, 103, 0.08);
  border-color: rgba(198, 166, 103, 0.85);
}

.btn--sm {
  padding: 12px 26px;
  font-size: 13px;
  font-weight: 500;
}

/* ============================================================
   TYPOGRAPHY HELPERS
   ============================================================ */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: #9C8F78;
  letter-spacing: 0.04em;
}

.eyebrow__rule {
  width: 30px;
  height: 1px;
  background: var(--gold-mid);
  flex: none;
}

.kicker {
  display: block;
  font-family: var(--f-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: #8A7A5A;
  margin-bottom: 16px;
}

.kicker--dark { color: #A08A5E; }

.h2 {
  font-family: var(--f-serif-cn);
  font-size: clamp(28px, 2.78vw, 40px);
  font-weight: 300;
  line-height: 1.45;
  letter-spacing: 0.01em;
  color: var(--t-1);
}

.h2--dark { color: #16130F; }

.rule {
  height: 1px;
  background: var(--line);
}

/* 锚点跳转避开吸顶导航 */
section[id] { scroll-margin-top: 92px; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding: 64px var(--gutter);
  display: grid;
  grid-template-columns: minmax(0, 600fr) minmax(0, 640fr);
  gap: 64px;
  align-items: center;
}

.hero__copy {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.hero__title {
  font-family: var(--f-serif-cn);
  font-size: clamp(38px, 4.2vw, 60px);
  font-weight: 300;
  line-height: 1.36;
  letter-spacing: 0.02em;
  color: #F6F0E4;
}

.hero__sub {
  max-width: 470px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--t-2);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.hero__trust {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
  font-size: 13px;
  color: var(--t-3);
}

.hero__trust li + li {
  position: relative;
  padding-left: 25px;
}

.hero__trust li + li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 1px;
  height: 12px;
  margin-top: -6px;
  background: #332C24;
}

.hero__visual {
  position: relative;
  aspect-ratio: 640 / 620;
  overflow: hidden;
  border-radius: 2px;
  background: linear-gradient(150deg, #1F1A14 0%, #0A0A0A 100%);
}

.hero__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
}

.badge {
  position: absolute;
  left: 32px;
  bottom: 32px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: #D8BE85;
  background: rgba(10, 10, 10, 0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(198, 166, 103, 0.35);
}

/* ============================================================
   SECTION HEAD
   ============================================================ */
.section-head {
  width: 100%;
}

.section-head--split {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 80px;
}

.section-head__title { max-width: 620px; }

.section-head__desc {
  max-width: 460px;
  font-size: 15px;
  line-height: 2;
  color: #948B7B;
}

.section-head__meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  text-align: right;
}

.meta-note {
  font-size: 12px;
  color: #8B8172;
}

.link-underline {
  font-size: 13px;
  color: #4A4238;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 0.35s var(--ease), color 0.35s var(--ease);
}

.link-underline:hover {
  color: #16130F;
  border-bottom-color: #16130F;
}

/* ============================================================
   SECTION · AUTHENTICATION
   ============================================================ */
.auth {
  padding: var(--pad-y) var(--gutter);
  background: var(--ink-2);
  display: flex;
  flex-direction: column;
  gap: 68px;
}

.pillars {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 40px;
  align-items: start;
}

.pillar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
}

.pillar__num {
  font-family: var(--f-display);
  font-size: clamp(34px, 3.2vw, 46px);
  line-height: 1.1;
  color: var(--gold);
}

.pillar__title {
  font-family: var(--f-serif-cn);
  font-size: 17px;
  font-weight: 400;
  color: #EDE5D5;
}

.pillar__desc {
  font-size: 13px;
  line-height: 1.85;
  color: var(--t-3);
}

.pillar:not(:first-child)::before {
  content: "";
  position: absolute;
  left: -20px;
  top: 0;
  width: 1px;
  height: 108px;
  background: var(--line-2);
}

/* ============================================================
   SECTION · COLLECTION
   ============================================================ */
.collection {
  padding: 104px var(--gutter);
  background: var(--paper);
  color: #16130F;
}

.collection .section-head { color: #16130F; }

.filters {
  margin: 44px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  padding: 9px 22px;
  border-radius: 1px;
  border: 1px solid #D6CFBE;
  font-size: 13px;
  color: #5B5245;
  background: transparent;
  transition: background 0.35s var(--ease), color 0.35s var(--ease),
              border-color 0.35s var(--ease);
}

.chip:hover {
  border-color: #B3A78F;
  color: #16130F;
}

.chip.is-active {
  background: #16130F;
  border-color: #16130F;
  color: var(--paper);
}

.grid {
  margin: 40px 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 46px 32px;
}

.card {
  transition: opacity 0.35s var(--ease);
}

.card.is-hidden { display: none; }

.card__link {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card__media {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: 2px;
  background: #E3DED4;
}

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

.card__link:hover .card__media img { transform: scale(1.045); }

.card__tag {
  position: absolute;
  left: 16px;
  top: 16px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 11px;
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--gold-light);
  background: rgba(10, 10, 10, 0.78);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.card__tag i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #D8BE85;
}

.card__body {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card__brand {
  font-family: var(--f-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: #8A7F6C;
}

.card__name {
  font-family: var(--f-serif-cn);
  font-size: 16px;
  font-weight: 400;
  color: #1A1611;
  transition: color 0.35s var(--ease);
}

.card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 2px;
}

.card__price {
  font-family: var(--f-display);
  font-size: 19px;
  color: #1A1611;
}

.card__meta {
  font-size: 12px;
  color: #8A7F6C;
}

/* ============================================================
   SECTION · CONSIGN
   ============================================================ */
.consign {
  padding: var(--pad-y) var(--gutter);
  background: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 56px;
}

.consign .section-head--split { align-items: flex-end; }
.consign .section-head__title { display: flex; flex-direction: column; }
.consign .section-head__desc { margin-top: 16px; max-width: 540px; }

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 56px;
  align-items: start;
}

.step {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.step__rule {
  height: 1px;
  background: var(--line-3);
  width: 100%;
}

.step__num {
  font-family: var(--f-display);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gold-mid);
}

.step__title {
  font-family: var(--f-serif-cn);
  font-size: 22px;
  font-weight: 400;
  color: #F0E9DA;
}

.step__desc {
  font-size: 14px;
  line-height: 1.85;
  color: #8E8575;
}

.step__meta {
  font-size: 12px;
  color: var(--t-4);
}

/* ============================================================
   SECTION · ABOUT
   ============================================================ */
.about {
  padding: var(--pad-y) var(--gutter);
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 64px;
}

.about__facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 40px;
  align-items: start;
}

.fact {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.fact__num {
  font-family: var(--f-display);
  font-size: clamp(36px, 3.4vw, 50px);
  line-height: 1.06;
  letter-spacing: 0.01em;
  color: var(--gold);
}

.fact__num em {
  font-family: var(--f-sans-cn);
  font-style: normal;
  font-size: 0.32em;
  letter-spacing: 0.08em;
  color: var(--gold-mid);
  margin-left: 6px;
  vertical-align: 0.18em;
}

.fact__title {
  font-family: var(--f-serif-cn);
  font-size: 16px;
  font-weight: 400;
  color: #EDE5D5;
}

.fact__desc {
  font-size: 13px;
  line-height: 1.85;
  color: var(--t-3);
}

.fact:not(:first-child)::before {
  content: "";
  position: absolute;
  left: -20px;
  top: 4px;
  width: 1px;
  height: 92px;
  background: var(--line-2);
}

/* ---- 全链路 + 到店信息 ---- */
.about__panel {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  background: linear-gradient(158deg, #14110E 0%, #0D0B09 100%);
  border: 1px solid #2B2420;
  border-radius: 2px;
}

.about__chain {
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding: 42px 44px 46px;
}

.about__chain .kicker { margin-bottom: 0; }

.chain {
  display: flex;
  flex-direction: column;
}

.chain__item {
  display: grid;
  grid-template-columns: 40px 72px minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid #2E261E;
}

.chain__item:first-child { padding-top: 0; }
.chain__item:last-child { padding-bottom: 0; border-bottom: 0; }

.chain__num {
  font-family: var(--f-display);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold-mid);
}

.chain__title {
  font-family: var(--f-serif-cn);
  font-size: 17px;
  font-weight: 400;
  color: #F0E9DA;
}

.chain__desc {
  font-size: 13px;
  line-height: 1.7;
  color: #8B8273;
}

.about__visit {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 42px 40px 46px;
  border-left: 1px solid #2B2420;
  background: rgba(255, 255, 255, 0.014);
}

.about__visit .kicker { margin-bottom: 2px; }

.visit__title {
  font-family: var(--f-serif-cn);
  font-size: 20px;
  font-weight: 400;
  color: #F0E9DA;
}

.visit__sub {
  margin-top: -6px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: #8A7F6C;
}

.visit__addr {
  font-style: normal;
  font-size: 13px;
  line-height: 1.95;
  color: #9A9182;
}

.visit__cities {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 2px;
}

.visit__cities li {
  padding: 3px 10px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: #8A7F6C;
  border: 1px solid #322A22;
}

.visit__join {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid #241E19;
  font-size: 12.5px;
  line-height: 1.8;
  color: #8E8575;
}

/* ============================================================
   SECTION · PROOF
   ============================================================ */
.proof {
  padding: var(--pad-y) var(--gutter);
  background: var(--ink-3);
  display: flex;
  flex-direction: column;
  gap: 56px;
}

.press {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 30px;
  font-family: var(--f-ui);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--t-4);
}

.press li:last-child {
  font-family: var(--f-sans-cn);
  letter-spacing: 0.06em;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 72px;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat__value {
  font-family: var(--f-display);
  font-size: clamp(26px, 2.5vw, 34px);
  line-height: 1.2;
  color: var(--gold);
}

.stat__label {
  font-size: 12px;
  color: var(--t-3);
}

.voices {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
  align-items: stretch;
}

.voice {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 26px;
  padding: 34px;
  border-radius: 2px;
  background: var(--ink-4);
  border: 1px solid #2B2420;
  transition: border-color 0.45s var(--ease), background 0.45s var(--ease);
}

.voice:hover {
  border-color: #443A2C;
  background: #1E1916;
}

.voice blockquote {
  font-family: var(--f-serif-cn);
  font-size: 17px;
  font-weight: 300;
  line-height: 1.88;
  color: #DCD4C4;
}

.voice__by {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: #8A8073;
}

.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  flex: none;
}

.avatar--a { background: linear-gradient(140deg, #87704D 0%, #382E21 100%); }
.avatar--b { background: linear-gradient(140deg, #6B6B66 0%, #2E2E2B 100%); }
.avatar--c { background: linear-gradient(140deg, #998061 0%, #402F24 100%); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  padding: 76px var(--gutter) 56px;
  background: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.footer__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 64px;
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 360px;
}

.footer__wordmark {
  font-family: var(--f-display);
  font-size: 28px;
  letter-spacing: 0.06em;
  color: #EFE3C4;
  line-height: 1;
}

.footer__tagline {
  font-family: var(--f-serif-cn);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: #9C8F78;
}

.footer__desc {
  font-size: 12px;
  line-height: 2;
  color: var(--t-4);
}

.footer__cols {
  display: flex;
  gap: 76px;
  flex-wrap: wrap;
}

.footer__col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer__col h4 {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--gold-mid);
}

.footer__col a {
  font-size: 13px;
  color: #8E8575;
  transition: color 0.3s var(--ease);
}

.footer__col a:hover { color: #E4CE9B; }

.footer__mega {
  font-family: var(--f-display);
  font-size: clamp(64px, 15.5vw, 224px);
  line-height: 0.94;
  letter-spacing: 0.01em;
  text-align: center;
  user-select: none;
  background: linear-gradient(
    180deg,
    rgba(230, 203, 148, 0.95) 0%,
    rgba(192, 160, 102, 0.74) 48%,
    rgba(150, 122, 76, 0.44) 84%,
    rgba(122, 100, 64, 0.26) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
  padding-top: 28px;
  border-top: 1px solid #1C1815;
  font-size: 11px;
  color: #5E564A;
}

.footer__legal {
  display: flex;
  gap: 26px;
}

.footer__legal a { transition: color 0.3s var(--ease); }
.footer__legal a:hover { color: #9C8F78; }

/* ============================================================
   REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
  will-change: opacity, transform;
}

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

/* ============================================================
   RESPONSIVE — 1200
   ============================================================ */
@media (max-width: 1200px) {
  :root {
    --pad-x: 48px;
    --pad-y: 96px;
  }

  .nav__links { gap: 30px; }

  .hero {
    gap: 44px;
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
  }

  .section-head--split { gap: 48px; }

  .stats { gap: 40px; }
  .steps { gap: 36px; }
  .footer__cols { gap: 52px; }

  .about__facts { gap: 32px; }
  .fact:not(:first-child)::before { left: -16px; }
  .about__chain { padding: 36px 32px 40px; }
  .about__visit { padding: 36px 32px 40px; }
}

/* ============================================================
   RESPONSIVE — 960
   ============================================================ */
@media (max-width: 960px) {
  .nav__links {
    position: fixed;
    inset: 92px 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px var(--pad-x) 32px;
    background: rgba(11, 11, 12, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
  }

  .nav__links.is-open {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }

  .nav__links a {
    width: 100%;
    padding: 16px 0;
    font-size: 16px;
    border-bottom: 1px solid #1E1A16;
  }

  .nav__links a::after { display: none; }

  .nav__burger { display: block; }
  .nav__login { display: none; }
  .nav__right { gap: 18px; }

  .hero {
    grid-template-columns: 1fr;
    gap: 48px;
    padding-top: 48px;
  }

  .hero__visual {
    aspect-ratio: 4 / 3.4;
  }

  .section-head--split {
    flex-direction: column;
    align-items: flex-start;
    gap: 28px;
  }

  .section-head__meta { align-items: flex-start; text-align: left; }

  .pillars { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 44px 32px; }
  .pillar:nth-child(3)::before { display: none; }
  .pillar::before { height: 100% !important; }

  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px 24px; }
  .steps { grid-template-columns: 1fr; gap: 40px; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px; }
  .voices { grid-template-columns: 1fr; gap: 20px; }

  .about { gap: 48px; }
  .about__facts { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px 32px; }
  .fact:nth-child(3)::before { display: none; }
  .fact::before { height: 100% !important; }

  .about__panel { grid-template-columns: 1fr; }
  .about__visit { border-left: 0; border-top: 1px solid #2B2420; }
  .visit__join { margin-top: 12px; }

  .footer__top { flex-direction: column; gap: 48px; }
  .footer__cols { gap: 40px 56px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; gap: 16px; }
}

/* ============================================================
   RESPONSIVE — 640
   ============================================================ */
@media (max-width: 640px) {
  :root {
    --pad-x: 24px;
    --pad-y: 72px;
  }

  .nav__inner { height: 76px; }
  .nav__links { inset: 76px 0 auto 0; }
  section[id] { scroll-margin-top: 76px; }
  .brand__en { font-size: 22px; }
  .brand__cn { display: none; }

  .btn { padding: 14px 24px; font-size: 13px; }
  .btn--sm { padding: 10px 18px; font-size: 12px; }
  .nav__right .btn--ghost { display: none; }

  .hero { padding-top: 32px; gap: 36px; }
  .hero__copy { gap: 24px; }
  .hero__title { font-size: 34px; line-height: 1.44; }
  .hero__sub { font-size: 14px; line-height: 1.9; }
  .hero__cta {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }
  .hero__cta .btn {
    flex: 0 0 auto;
    width: 100%;
    padding: 15px 22px;
  }
  .hero__trust { gap: 14px 18px; font-size: 12px; }
  .hero__trust li + li { padding-left: 19px; }
  .badge { left: 16px; bottom: 16px; padding: 10px 14px; font-size: 11px; }

  .grid { grid-template-columns: 1fr; gap: 36px; }
  .pillars { grid-template-columns: 1fr; gap: 36px; }
  .pillar::before { display: none !important; }
  .stats { grid-template-columns: 1fr; gap: 28px; }

  .filters {
    margin-top: 32px;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
  }
  .filters::-webkit-scrollbar { display: none; }
  .chip { flex: none; }

  .voice { padding: 26px; }
  .voice blockquote { font-size: 16px; }

  .about { gap: 40px; }
  .about__facts { gap: 28px 24px; }
  .fact { gap: 6px; }
  .fact__num { font-size: 32px; }
  .fact__desc { font-size: 12px; }
  .about__chain { padding: 28px 22px 32px; gap: 22px; }
  .about__visit { padding: 28px 22px 32px; }
  .chain__item { grid-template-columns: 32px 58px minmax(0, 1fr); gap: 10px; padding: 14px 0; }
  .chain__title { font-size: 16px; }
  .chain__desc { font-size: 12px; line-height: 1.7; }

  .footer { padding-bottom: 40px; }
  .footer__cols { gap: 32px 40px; }
  .footer__legal { flex-wrap: wrap; gap: 16px; }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

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