/* =================================================================
   富得贵金属 · 响应式样式
   断点: 1440 / 1200 / 1024 / 768 / 480
   ================================================================= */

:root {
  --red: #b7000c;
  --red-2: #e41928;
  --red-3: #f6373b;
  --red-4: #dc2626;
  --gold: #ffdc80;
  --ink: #1e1e1e;
  --ink-2: #18181b;
  --muted: #777;
  --muted-2: #71717a;
  --stone: #f6f3f2;
  --stone-2: #f4f4f5;
  --line: #e4e4e7;
  --container: 1280px;
  --container-wide: 1440px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: #fff;
  color: var(--ink);
  font-family: "OPPOSans", "Noto Sans SC", "HarmonyOS Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  line-height: 1.5;
}

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

ul {
  list-style: none;
}

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

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

input {
  font-family: inherit;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  letter-spacing: .04em;
  cursor: pointer;
  transition: transform .18s ease, filter .2s, background-color .2s, color .2s;
}

.btn:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

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

/* ==================== 顶部红条 ==================== */
.promo-bar {
  background: var(--red);
  color: #fff;
  height: 57px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  text-align: center;
}

.promo-bar p {
  font-size: 16px;
  font-weight: 500;
  line-height: 27px;
  letter-spacing: .05em;
}

/* ==================== Header ==================== */
.site-header {
  background: var(--ink);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  position: relative;
  max-width: var(--container-wide);
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-logo {
  width: 56px;
  height: 56px;
  object-fit: contain;
}

.brand-name {
  font-size: 20px;
  color: #fff;
  font-weight: 700;
  letter-spacing: .05em;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 1.8vw, 32px);
  height: 100%;
  position: absolute;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
}

/* 移动端三段式结构：桌面默认隐藏 head/foot，body 透明化让链接回到 flex 主轴 */
.main-nav .nav-mobile-head,
.main-nav .nav-mobile-foot { display: none; }
.main-nav .nav-mobile-body { display: contents; }

.header-actions {
  margin-left: auto;
}

.nav-link {
  color: #fff;
  font-size: 16px;
  letter-spacing: -.025em;
  text-transform: uppercase;
  height: 100%;
  display: flex;
  align-items: center;
  position: relative;
  padding: 0 2px;
  transition: color .2s;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 12px;
  height: 2px;
  background: var(--red);
  transform: scaleX(0);
  transition: transform .25s ease;
}

.nav-link.active,
.nav-link:hover {
  color: var(--red);
}

.main-nav .nav-dropdown {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}
.main-nav .nav-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}
.main-nav .nav-arrow {
  font-size: 9px;
  opacity: .7;
  transition: transform .25s;
}
.main-nav .nav-dropdown:hover .nav-arrow { transform: rotate(180deg); }
.main-nav .nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  background: var(--ink);
  min-width: 160px;
  padding: 6px 0;
  box-shadow: 0 12px 28px rgba(0, 0, 0, .4);
  opacity: 0;
  visibility: hidden;
  transition: opacity .2s, visibility .2s, transform .2s;
  z-index: 60;
  border: 1px solid rgba(255, 255, 255, .08);
}
.main-nav .nav-dropdown:hover .nav-dropdown-menu,
.main-nav .nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.main-nav .nav-dropdown-menu a {
  display: block;
  padding: 10px 22px;
  color: #fff;
  font-size: 14px;
  letter-spacing: .02em;
  white-space: nowrap;
  text-transform: none;
  transition: background .15s, color .15s;
}
.main-nav .nav-dropdown-menu a:hover {
  background: rgba(255, 255, 255, .06);
  color: var(--red);
}

.nav-link.active::after,
.nav-link:hover::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.header-icons {
  display: flex;
  gap: 12px;
}

.header-icons img {
  width: 20px;
  height: 20px;
  opacity: .85;
  transition: opacity .2s;
  cursor: pointer;
}

.header-icons img:hover {
  opacity: 1;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--red);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  height: 38px;
  padding: 0 24px;
  white-space: nowrap;
  text-decoration: none;
  transition: filter .2s, transform .15s;
}
.header-cta:hover { filter: brightness(1.08); transform: translateY(-1px); }

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  margin-left: auto;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 60;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 1px;
  transition: transform .3s ease, opacity .2s ease;
  transform-origin: center;
}

body.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
body.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
body.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ==================== Hero ==================== */
.hero {
  position: relative;
  overflow: hidden;
  background: #0b0b0b;
  min-height: 708px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .75;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0, 0, 0, .55) 0%, rgba(0, 0, 0, .2) 55%, rgba(0, 0, 0, 0) 100%);
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 24px 60px;
  display: grid;
  grid-template-columns: 1fr 544px;
  gap: 48px;
  align-items: start;
}

.hero-left {
  color: #fff;
  max-width: 620px;
  padding-top: 80px;
  padding-left: 87px;
}

.asic-badge {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 415px;
  min-height: 120px;
  padding: 12px 70px;
  margin-bottom: 28px;
  left: -25px;
}

.asic-wreath {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
}

.asic-body {
  position: relative;
  text-align: center;
}

.asic-text {
  color: #f5f5f5;
  font-size: 20px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 1px;
  white-space: nowrap;
  margin-bottom: 2px;
}

.asic-stars {
  display: flex;
  justify-content: center;
  gap: 27px;
  margin-bottom: 4px;
}

.asic-stars span {
  width: 10px;
  height: 9.5px;
  font-size: 10px;
  line-height: 9.5px;
  color: #fff;
  text-align: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.asic-brand {
  color: #f5f5f5;
  font-size: 10px;
  font-weight: 600;
  line-height: 15px;
  letter-spacing: .05em;
  white-space: nowrap;
}

.asic-license {
  color: #f5f5f5;
  font-size: 10px;
  font-weight: 500;
  line-height: 15px;
  letter-spacing: .05em;
  white-space: nowrap;
}

.hero-title {
  font-size: 48px;
  font-weight: 900;
  line-height: 60px;
  letter-spacing: 2.4px;
  margin-bottom: 24px;
}

.hero-title .gold {
  color: var(--gold);
}

.hero-title .br {
  display: inline-block;
}

.hero-subtitle {
  color: #f5f5f5;
  font-size: 20px;
  font-weight: 500;
  line-height: 27px;
  letter-spacing: 1px;
  margin-bottom: 28px;
}

.hero-bullets {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.hero-bullets li {
  color: #d9d9d9;
  font-size: 16px;
  line-height: 36px;
  letter-spacing: .05em;
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-bullets .check {
  color: var(--gold);
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  flex-shrink: 0;
}

/* Hero 表单卡片 */
.signup-card {
  background: #fff;
  border-radius: 0 0 30px 30px;
  padding: 40px 48px 28px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, .35);
  width: 100%;
  max-width: 544px;
  justify-self: end;
  align-self: stretch;
  display: flex;
  flex-direction: column;
}

.signup-card .signup-divider {
  margin-top: auto;
}

.signup-title {
  text-align: center;
  font-size: 32px;
  font-weight: 800;
  color: #000;
  letter-spacing: 1.6px;
  margin-bottom: 6px;
}

.signup-subtitle {
  text-align: center;
  color: var(--red);
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 1.2px;
  margin-bottom: 24px;
}

.field-label {
  display: block;
  color: var(--muted);
  font-size: 16px;
  letter-spacing: .03em;
  margin: 14px 0 8px;
}

.signup-input {
  width: 100%;
  height: 48px;
  padding: 0 16px;
  border: 1px solid #777;
  border-radius: 10px;
  font-size: 16px;
  color: #333;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}

.signup-input:focus {
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(183, 0, 12, .12);
}

.signup-input::placeholder {
  color: #aaa;
}

.signup-submit {
  width: 100%;
  height: 59px;
  margin-top: 24px;
  border-radius: 40px;
  background: linear-gradient(180deg, #fd4242 0%, #e41928 100%);
  color: #fff;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  box-shadow: 0 10px 25px rgba(228, 25, 40, .35);
  transition: transform .2s, filter .2s, box-shadow .2s;
}

.signup-submit:hover {
  filter: brightness(1.06);
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(228, 25, 40, .45);
}

.signup-divider {
  height: 1px;
  background: #e5e5e5;
  margin: 20px 0 12px;
}

.signup-secure {
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  letter-spacing: .05em;
}

/* ==================== Highlights ==================== */
.highlights {
  background: #fff;
  padding: 64px 0;
}

.highlights-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  column-gap: 42px;
  row-gap: 32px;
}

.hl-item {
  text-align: center;
  padding: 10px 0;
  border-right: 1px solid #d9d9d9;
}

.hl-item:last-child {
  border-right: none;
}

.hl-num {
  color: #b91c1c;
  font-size: 36px;
  font-weight: 900;
  line-height: 40px;
  margin-bottom: 8px;
}

.hl-label {
  color: var(--muted-2);
  font-size: 14px;
  font-weight: 500;
  line-height: 20px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
}

/* ==================== 实时行情 ==================== */
.prices {
  position: relative;
  overflow: hidden;
  padding: 64px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fafafa;
}

.prices-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .6;
  z-index: 0;
}

.prices-bg::after,
.prices::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, .7) 0%, rgba(255, 255, 255, .5) 100%);
  z-index: 0;
}

.prices-inner {
  position: relative;
  z-index: 1;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 24px;
}

.prices-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.prices-title {
  font-size: 48px;
  font-weight: 900;
  line-height: 1.1;
  color: #000;
}

.prices-more {
  font-size: 16px;
  color: #b91c1c;
  font-weight: 500;
  padding-bottom: 2px;
  border-bottom: 2px solid #b91c1c;
  transition: opacity .2s;
}

.prices-more:hover {
  opacity: .7;
}

.prices-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.price-card {
  background: #fff;
  border-left: 4px solid #b91c1c;
  border-radius: 0;
  padding: 24px 24px 24px 28px;
  box-shadow: 0 24px 8.8px rgba(0, 0, 0, .15);
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform .25s, box-shadow .25s;
}

.price-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 44px rgba(0, 0, 0, .14);
}

.price-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.price-name {
  font-size: 16px;
  line-height: 24px;
  font-weight: 700;
  color: var(--ink-2);
}

.price-change {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 700;
}

.price-change img {
  width: 10px;
  height: 6px;
}

.price-change.up {
  color: #10b981;
}

.price-change.down {
  color: var(--red-4);
}

.price-value {
  font-size: 30px;
  font-weight: 400;
  color: var(--ink-2);
  line-height: 36px;
}

.price-bidask {
  display: flex;
  gap: 8px;
}

.price-bidask span {
  flex: 1;
  background: var(--stone-2);
  color: var(--muted-2);
  font-size: 10px;
  line-height: 15px;
  text-align: center;
  padding: 8px 0;
  border-radius: 0;
}

/* ==================== 为什么选择富得 ==================== */
.why {
  background: #fff;
  padding: 96px 0;
  text-align: center;
}

.why-title {
  color: var(--ink);
  font-size: 48px;
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: 2.4px;
  margin-bottom: 12px;
}

.why-subtitle {
  color: var(--muted);
  font-size: 20px;
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: 1px;
  margin-bottom: 50px;
}

.why-grid {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--stone);
  padding: 32px;
  text-align: left;
  box-shadow: 0 4px 4px rgba(0, 0, 0, .15);
  border-radius: 0;
  min-height: 196px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform .25s, box-shadow .25s, background-color .25s;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--red);
  transition: width .3s ease;
}

.feature-card:hover::before {
  width: 100%;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 32px rgba(0, 0, 0, .14);
  background: #fff;
}

.feature-icon {
  width: 30px;
  height: 30px;
  object-fit: contain;
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: #000;
  line-height: 28px;
  padding-top: 8px;
}

.feature-card p {
  color: var(--muted-2);
  font-size: 16px;
  font-weight: 500;
  line-height: 20px;
}

/* ==================== 客户评价 ==================== */
.testimonials {
  position: relative;
  overflow: hidden;
  background: #0f0f0f;
  padding: 86px 0 96px;
}

.testimonials-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .55;
  z-index: 0;
}

.testimonials::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, .6) 0%, rgba(0, 0, 0, .3) 50%, rgba(0, 0, 0, .7) 100%);
  z-index: 0;
}

.testimonials-inner {
  position: relative;
  z-index: 1;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
}

.t-title {
  color: #fff;
  font-size: 48px;
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: 2.4px;
  margin-bottom: 6px;
}

.t-subtitle {
  color: #b3b3b3;
  font-size: 20px;
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: 1px;
  margin-bottom: 44px;
}

.t-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  text-align: left;
}

.t-card {
  background: #1f1f1f;
  border-top: 4px solid #e60012;
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 22.8px;
  transition: transform .25s, box-shadow .25s;
  border-radius: 0;
}

.t-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 44px rgba(230, 0, 18, .25);
}

.t-head {
  display: flex;
  align-items: center;
  gap: 16px;
}

.t-quote {
  width: 48px;
  height: 48px;
  background: #393939;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border-radius: 0;
}

.t-quote img {
  width: 16px;
  height: 16px;
  object-fit: contain;
}

.t-name {
  color: #fff;
  font-size: 16px;
  font-weight: 500;
  line-height: 24px;
}

.t-role {
  color: #c6c6c7;
  font-size: 10px;
  font-weight: 500;
  line-height: 15px;
  margin-top: 2px;
}

.t-text {
  color: #e2e2e2;
  font-size: 14px;
  line-height: 22.75px;
  flex: 1;
}

.t-foot {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding-top: 9.2px;
}

.t-label {
  color: #c6c6c7;
  font-size: 12px;
  font-weight: 500;
  line-height: 16px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
}

.t-amount {
  color: #e60012;
  font-size: 24px;
  line-height: 32px;
  font-weight: 800;
}

/* ==================== FAQ ==================== */
.faq {
  background: var(--stone);
  padding: 85px 0 96px;
  text-align: center;
}

.faq-title {
  color: var(--ink);
  font-size: 48px;
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: 2.4px;
  margin-bottom: 6px;
}

.faq-subtitle {
  color: var(--muted);
  font-size: 20px;
  font-weight: 500;
  letter-spacing: 1px;
  margin-bottom: 61px;
}

.faq-list {
  max-width: 896px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-align: left;
}

.faq-item {
  background: #fff;
  padding: 25px;
  box-shadow: 0 3px 8.3px rgba(0, 0, 0, .08);
  border-radius: 0;
  transition: box-shadow .25s;
}

.faq-item:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, .1);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary span {
  color: var(--muted);
  font-size: 20px;
  line-height: 24px;
  flex: 1;
  transition: color .2s;
}

.faq-chev {
  width: 12px;
  height: 7.4px;
  transition: transform .3s;
  flex-shrink: 0;
}

.faq-item[open] .faq-chev {
  transform: rotate(180deg);
}

.faq-item[open] summary span {
  color: var(--red);
  font-weight: 600;
}

.faq-item p {
  margin-top: 16px;
  color: #555;
  font-size: 15px;
  line-height: 1.75;
  padding-top: 16px;
  border-top: 1px solid #f0f0f0;
  animation: faqFade .3s ease;
}

@keyframes faqFade {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==================== CTA ==================== */
.cta {
  position: relative;
  overflow: hidden;
  padding: 50px 0;
  background: #1a1a1a;
  min-height: 442px;
  display: flex;
  align-items: center;
}

.cta-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .7;
  z-index: 0;
}

.cta::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0, 0, 0, .6), rgba(0, 0, 0, .3));
  z-index: 0;
}

.cta-dividers {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  z-index: 1;
  pointer-events: none;
}

.cta-dividers span {
  border-right: 1px solid rgba(255, 255, 255, .2);
}

.cta-dividers span:last-child {
  border-right: none;
}

.cta-inner {
  position: relative;
  z-index: 2;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  width: 100%;
}

.cta-text h2 {
  color: #fff;
  font-size: 64px;
  font-weight: 900;
  line-height: 96px;
  letter-spacing: -4.8px;
  margin-bottom: 12px;
}

.cta-text p {
  color: rgba(255, 255, 255, .8);
  font-size: 24px;
  line-height: 39px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  flex-shrink: 0;
}

.cta-primary,
.cta-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 177px;
  height: 72px;
  padding: 0;
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 1.8px;
  transition: transform .2s, background-color .2s, filter .2s;
  border-radius: 0;
  text-decoration: none;
}

.cta-primary {
  background: var(--red-3);
  color: #fff;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, .2), 0 8px 10px -6px rgba(0, 0, 0, .15);
}

.cta-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
}

.cta-ghost {
  border: 2px solid #fff;
  color: #fff;
  background: transparent;
}

.cta-ghost:hover {
  background: rgba(255, 255, 255, .12);
  transform: translateY(-2px);
}

/* ==================== Footer ==================== */
.site-footer {
  background: #1c1b1b;
  border-top: 1px solid rgba(255, 255, 255, .05);
  padding: 97px 0 96px;
  color: #fff;
}

.footer-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding-left: 50px;
}

.footer-cols {
  display: flex;
  gap: 48px;
  align-items: flex-start;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, .06);
  flex-wrap: wrap;
}

.footer-col {
  flex: 1 1 160px;
  min-width: 160px;
}

.brand-col {
  flex: 0 0 400px;
  width: 400px;
}

.brand-footer {
  margin: 0 0 30.8px;
}

.brand-footer .brand-logo {
  width: 56px;
  height: 56px;
}

.brand-footer .brand-name {
  font-size: 20px;
  letter-spacing: 1px;
}

.footer-addr p {
  color: rgba(255, 255, 255, .4);
  font-size: 14px;
  line-height: 22.75px;
}

.footer-social {
  display: flex;
  gap: 16px;
  margin-top: 32px;
}

.social-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .25s, opacity .25s;
  opacity: .85;
}

.social-btn:hover {
  transform: translateY(-2px);
  opacity: 1;
}

.social-btn img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.footer-col h6 {
  color: rgba(255, 255, 255, .4);
  font-size: 12px;
  font-weight: 700;
  line-height: 16px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  margin-bottom: 32px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-col li a {
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  line-height: 20px;
  transition: color .2s;
}

.footer-col li a:hover {
  color: var(--red-3);
}

.footer-subscribe {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 32px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .06);
  flex-wrap: wrap;
}

.subs-big {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  line-height: 27px;
  letter-spacing: 1px;
}

.subs-small {
  font-size: 12px;
  color: #FFFFFF;
  line-height: 27px;
  letter-spacing: .04em;
  margin-top: 15px;
}

.subs-form {
  width: 283px;
  max-width: 100%;
  height: 39px;
  border: 1px solid #454545;
  border-radius: 8px;
  display: flex;
  align-items: center;
  background: rgba(0, 0, 0, .3);
}

.subs-form input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #fff;
  padding: 0 17px;
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.subs-form input::placeholder {
  color: rgba(255, 255, 255, .4);
}

.subs-form button,
.subs-form > a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 109px;
  height: 100%;
  padding: 0;
  margin: 0;
  border: none;
  background: #f53439;
  border-radius: 5px;
  color: #fff !important;
  font-size: 12px;
  font-weight: 500;
  line-height: 33px;
  text-decoration: none !important;
  letter-spacing: 1px;
  text-transform: uppercase;
  box-sizing: border-box;
  white-space: nowrap;
  overflow: hidden;
  transition: filter .2s;
  position: relative;
  right: 22px;
}

.subs-form button:hover,
.subs-form > a:hover {
  filter: brightness(1.1);
}

.footer-legal {
  border-left: 2px solid var(--red);
  padding: 21px 32px 21px 34px;
  margin: 24px 0 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.footer-legal h6 {
  font-size: 12px;
  font-weight: 700;
  line-height: 16px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .4);
}

.footer-legal p {
  font-size: 10px;
  font-weight: 400;
  line-height: 16.25px;
  letter-spacing: -.5px;
  color: rgba(255, 255, 255, .3);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 48px;
  flex-wrap: wrap;
  gap: 16px;
  border-top: 1px solid rgba(255, 255, 255, .05);
}

.footer-bottom p {
  color: rgba(255, 255, 255, .4);
  font-size: 10px;
  line-height: 15px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.footer-bottom a {
  color: inherit;
  text-decoration: underline;
}

.footer-bottom a:hover {
  color: #fff;
}

.footer-links {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255, 255, 255, .4);
  font-size: 10px;
  font-weight: 700;
  line-height: 15px;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: color .2s;
  text-decoration: none;
}

.footer-links a:hover {
  color: #fff;
}

/* ==================== QR 模态框 ==================== */
.qr-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
}

.qr-modal.active {
  display: flex;
}

.qr-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .6);
  backdrop-filter: blur(4px);
  animation: qrFade .2s ease;
}

.qr-box {
  position: relative;
  background: #fff;
  border-radius: 12px;
  padding: 28px 28px 20px;
  max-width: calc(100vw - 32px);
  text-align: center;
  z-index: 1;
  box-shadow: 0 20px 60px rgba(0, 0, 0, .4);
  animation: qrPop .2s ease;
}

@keyframes qrFade {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes qrPop {
  from {
    opacity: 0;
    transform: scale(.92) translateY(10px);
  }

  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.qr-close {
  position: absolute;
  top: 10px;
  right: 14px;
  width: 28px;
  height: 28px;
  font-size: 24px;
  line-height: 1;
  color: #999;
  cursor: pointer;
  background: none;
  border: none;
  transition: color .2s;
}

.qr-close:hover {
  color: #000;
}

.qr-title {
  font-size: 18px;
  font-weight: 700;
  color: #000;
  margin-bottom: 20px;
  letter-spacing: .5px;
}

.qr-img {
  width: 400px;
  height: auto;
  max-width: 100%;
  margin: 0 auto;
  object-fit: contain;
  display: block;
}

.qr-placeholder {
  width: 400px;
  height: 400px;
  max-width: 100%;
  margin: 0 auto;
  background: #f4f4f5;
  color: #aaa;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  border-radius: 4px;
}

.qr-placeholder small {
  font-size: 11px;
  color: #bbb;
}

.qr-hint {
  color: #777;
  font-size: 13px;
  line-height: 1.5;
}

/* button.social-btn 重置（原本是 <a>）*/
button.social-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

/* =================================================================
   响应式断点（基准：1920 Figma 画布 → 从大到小按比例缩放）
   ================================================================= */

/* ≤ 1600 (桌面略缩)：主 section 垂直留白收紧 */
@media (max-width: 1600px) {

  .why,
  .testimonials,
  .faq {
    padding-top: 72px;
    padding-bottom: 80px;
  }

  .site-footer {
    padding: 80px 0 72px;
  }

  .cta-text h2 {
    font-size: 56px;
    line-height: 80px;
    letter-spacing: -3.6px;
  }
}

/* ≤ 1440 (笔记本)：字号整体 85%、Hero 右列缩窄、section padding 收紧 */
@media (max-width: 1440px) {
  .hero-inner {
    grid-template-columns: 1fr 500px;
    gap: 36px;
  }

  .hero-left {
    padding-top: 60px;
  }

  .hero-title {
    font-size: 42px;
    line-height: 54px;
    letter-spacing: 2px;
  }

  .hero-subtitle {
    font-size: 18px;
    line-height: 26px;
    letter-spacing: .5px;
  }

  .hero-bullets li {
    font-size: 15px;
    line-height: 32px;
  }

  .asic-badge {
    width: 380px;
    min-height: 108px;
    padding: 10px 58px;
    margin-bottom: 24px;
  }

  .asic-text {
    font-size: 18px;
    line-height: 1.4;
  }

  .signup-card {
    max-width: 500px;
    padding: 32px 40px 24px;
  }

  .signup-title {
    font-size: 28px;
    letter-spacing: 1.4px;
  }

  .signup-subtitle {
    font-size: 22px;
    letter-spacing: 1px;
  }

  .signup-input {
    height: 46px;
    font-size: 15px;
  }

  .signup-submit {
    height: 54px;
    font-size: 22px;
  }

  .highlights {
    padding: 48px 0;
  }

  .highlights-inner {
    column-gap: 32px;
  }

  .hl-num {
    font-size: 32px;
    line-height: 36px;
  }

  .prices {
    padding: 56px 0;
  }

  .prices-title {
    font-size: 40px;
    letter-spacing: 1.8px;
  }

  .price-value {
    font-size: 26px;
    line-height: 32px;
  }

  .price-card {
    padding: 22px 22px 22px 26px;
    box-shadow: 0 18px 6.6px rgba(0, 0, 0, .12);
  }

  .why {
    padding: 72px 0;
  }

  .why-title,
  .t-title,
  .faq-title {
    font-size: 40px;
    letter-spacing: 1.8px;
  }

  .why-subtitle,
  .t-subtitle,
  .faq-subtitle {
    font-size: 18px;
    letter-spacing: .5px;
    margin-bottom: 40px;
  }

  .feature-card {
    padding: 28px;
    min-height: 178px;
  }

  .feature-card h3 {
    font-size: 18px;
    line-height: 26px;
    padding-top: 6px;
  }

  .feature-card p {
    font-size: 15px;
    line-height: 20px;
  }

  .t-card {
    padding: 36px 32px 32px;
    gap: 20px;
  }

  .t-text {
    font-size: 13px;
    line-height: 20px;
  }

  .t-amount {
    font-size: 22px;
    line-height: 28px;
  }

  .faq {
    padding: 72px 0 80px;
  }

  .faq-list {
    max-width: 840px;
  }

  .faq-item {
    padding: 22px;
  }

  .faq-item summary span {
    font-size: 18px;
    line-height: 24px;
  }

  .cta {
    min-height: 380px;
    padding: 40px 0;
  }

  .cta-text h2 {
    font-size: 48px;
    line-height: 68px;
    letter-spacing: -2.4px;
  }

  .cta-text p {
    font-size: 20px;
    line-height: 32px;
  }

  .cta-primary,
  .cta-ghost {
    width: 160px;
    height: 64px;
    font-size: 16px;
    letter-spacing: 1.4px;
  }

  .site-footer {
    padding: 64px 0 56px;
  }

  .footer-inner {
    max-width: 1200px;
  }

  .footer-cols {
    gap: 32px;
  }

  .brand-col {
    flex: 0 0 340px;
    width: 340px;
  }

  .footer-legal {
    padding: 18px 28px 18px 30px;
  }
}

/* ≤ 1200 (小笔记本) */
@media (max-width: 1200px) {
  :root {
    --container: 100%;
  }

  .main-nav {
    gap: 14px;
  }

  .nav-link {
    font-size: 14px;
  }

  .header-cta {
    font-size: 14px;
    padding: 0 18px;
    height: 34px;
  }

  .brand-logo {
    width: 48px;
    height: 48px;
  }

  .brand-name {
    font-size: 18px;
  }

  .hero-inner {
    grid-template-columns: 1fr 440px;
    gap: 28px;
  }

  .hero-title {
    font-size: 36px;
    line-height: 46px;
    letter-spacing: 1.5px;
  }

  .hero-subtitle {
    font-size: 16px;
    line-height: 24px;
  }

  .hero-bullets li {
    font-size: 14px;
    line-height: 30px;
  }

  .asic-badge {
    width: 340px;
    min-height: 96px;
    padding: 10px 48px;
  }

  .asic-text {
    font-size: 16px;
  }

  .signup-card {
    max-width: 440px;
    padding: 28px 32px 22px;
  }

  .signup-title {
    font-size: 24px;
    letter-spacing: 1.2px;
  }

  .signup-subtitle {
    font-size: 20px;
  }

  .signup-input {
    height: 44px;
    font-size: 14px;
  }

  .field-label {
    font-size: 14px;
  }

  .signup-submit {
    height: 50px;
    font-size: 20px;
  }

  .hl-num {
    font-size: 30px;
    line-height: 34px;
  }

  .prices-title {
    font-size: 36px;
    letter-spacing: 1.5px;
  }

  .price-name {
    font-size: 15px;
  }

  .price-value {
    font-size: 24px;
    line-height: 30px;
  }

  .why-title,
  .t-title,
  .faq-title {
    font-size: 36px;
    letter-spacing: 1.5px;
  }

  .feature-card {
    padding: 24px;
    min-height: 170px;
  }

  .feature-card h3 {
    font-size: 17px;
    line-height: 24px;
  }

  .feature-card p {
    font-size: 14px;
    line-height: 19px;
  }

  .t-card {
    padding: 32px 28px 28px;
  }

  .cta-text h2 {
    font-size: 42px;
    line-height: 60px;
    letter-spacing: -2px;
  }

  .cta-text p {
    font-size: 18px;
    line-height: 28px;
  }

  .cta-primary,
  .cta-ghost {
    width: 150px;
    height: 60px;
    font-size: 15px;
    letter-spacing: 1.2px;
  }

  .footer-inner {
    max-width: 100%;
  }

  .brand-col {
    flex: 0 0 300px;
    width: 300px;
  }

  .footer-cols {
    gap: 28px;
  }
}

/* ≤ 1024 (平板)：堆叠 hero、grid 降列数、nav 折叠（参考 fude 全屏抽屉） */
@media (max-width: 1024px) {
  .header-inner {
    flex-wrap: nowrap;
    padding: 0 16px;
  }

  /* Logo 靠左，立即开户 + 汉堡贴右 */
  .site-header .brand { margin-right: auto; flex-shrink: 0; }
  .site-header .header-actions { order: 2; gap: 10px; margin: 0; flex-shrink: 0; }
  .site-header .header-actions .header-icons { display: none; }

  .nav-toggle {
    display: flex;
    order: 3;
    margin-left: 6px;
    z-index: 1002;
  }
  .nav-toggle span { background: #1c1b1b; }
  body.nav-open .nav-toggle { display: none; }

  /* 抽屉：全屏 fixed 覆盖 */
  .main-nav {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.98);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    margin: 0;
    padding: 0;
    max-height: none;
    order: 5;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    z-index: 1001;
    transform: none;
  }
  body.nav-open { overflow: hidden; }
  body.nav-open .main-nav { display: flex; }

  /* 移动端顶栏 */
  .main-nav .nav-mobile-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    border-bottom: 1px solid #eee;
    width: 100%;
    box-sizing: border-box;
    flex-shrink: 0;
  }
  .main-nav .nav-mobile-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
  .main-nav .nav-mobile-logo img { height: 34px; display: block; }
  .main-nav .nav-mobile-brand {
    color: #1c1b1b;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: .5px;
    white-space: nowrap;
  }
  .main-nav .nav-mobile-close {
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    font-size: 28px;
    line-height: 1;
    color: #1c1b1b;
    cursor: pointer;
    padding: 0;
  }

  /* 中间链接区 */
  .main-nav .nav-mobile-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    width: 100%;
    gap: 6vw;
    padding: 6vw 4vw;
    overflow-y: auto;
    box-sizing: border-box;
  }

  .main-nav .nav-mobile-body .nav-link {
    width: auto;
    height: auto;
    padding: 8px 0;
    border: none;
    color: #333;
    font-size: 4.5vw;
    text-transform: none;
    font-weight: 400;
    display: inline-flex;
    justify-content: center;
    gap: 4px;
  }
  .main-nav .nav-mobile-body .nav-link.active { color: #DC0000; }
  .main-nav .nav-link::after { display: none; }

  /* 下拉 */
  .main-nav .nav-dropdown {
    position: relative;
    display: block;
    width: auto;
    text-align: center;
    border: none;
  }
  .main-nav .nav-dropdown .nav-dropdown-toggle { justify-content: center; }
  .main-nav .nav-dropdown-menu {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    border: none;
    background: transparent;
    min-width: 0;
    padding: 0;
    margin: 0;
    border-radius: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease, padding .3s ease;
  }
  .main-nav .nav-dropdown-menu::before { display: none; }
  .main-nav .nav-dropdown.active .nav-dropdown-menu {
    max-height: 80vw;
    padding: 2vw 0;
  }
  .main-nav .nav-dropdown.active .nav-arrow { transform: rotate(180deg); }
  /* 覆盖桌面 hover 的 opacity/visibility/transform，避免抽屉里半透明错位；max-height 由 .active 驱动 */
  .main-nav .nav-dropdown:hover .nav-dropdown-menu,
  .main-nav .nav-dropdown:focus-within .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .main-nav .nav-dropdown-menu a {
    display: block;
    padding: 2vw 4vw;
    color: #666;
    font-size: 3.6vw;
    background: transparent;
  }
  .main-nav .nav-arrow {
    font-size: 10px;
    color: inherit;
    transition: transform .25s;
  }

  /* 底部行 */
  .main-nav .nav-mobile-foot {
    display: flex;
    gap: 12px;
    padding: 14px 16px;
    border-top: 1px solid #eee;
    width: 100%;
    box-sizing: border-box;
    flex-shrink: 0;
  }
  .main-nav .nav-mobile-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 0;
    font-size: 14px;
    font-weight: 500;
    border-radius: 6px;
    text-decoration: none;
  }
  .main-nav .nav-mobile-btn-primary {
    background: #DC0000;
    color: #fff;
    border: 2px solid #DC0000;
  }
  .main-nav .nav-mobile-btn-outline {
    background: transparent;
    color: #DC0000;
    border: 2px solid #DC0000;
  }

  .hero {
    min-height: auto;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    padding: 40px 24px 48px;
    gap: 36px;
  }

  .hero-left {
    max-width: 100%;
    padding-top: 0;
    padding-left: unset;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }

  .asic-badge {
    display: flex;
    margin-left: auto;
    margin-right: auto;
    left: 0;
  }

  .hero-title {
    font-size: 34px;
    line-height: 44px;
  }

  .signup-card {
    justify-self: center;
    align-self: auto;
    max-width: 560px;
    border-radius: 18px;
    padding: 32px 32px 24px;
  }

  .highlights-inner {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 24px;
    row-gap: 20px;
  }

  .hl-item:nth-child(2n) {
    border-right: none;
  }

  .hl-item:nth-child(-n+2) {
    border-bottom: 1px solid #d9d9d9;
    padding-bottom: 20px;
  }

  .hl-item:nth-child(n+3) {
    padding-top: 20px;
  }

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

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

  .t-grid {
    grid-template-columns: 1fr;
    max-width: 560px;
    margin: 0 auto;
    gap: 24px;
  }

  .cta {
    min-height: auto;
    padding: 56px 0;
  }

  .cta-text h2 {
    font-size: 36px;
    line-height: 48px;
    letter-spacing: -1px;
  }

  .cta-text p {
    font-size: 16px;
    line-height: 26px;
  }

  .cta-primary,
  .cta-ghost {
    width: 140px;
    height: 56px;
    font-size: 14px;
  }

  .footer-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .brand-col,
  .footer-col {
    width: auto;
    flex: none;
    min-width: 0;
  }

  .brand-col {
    grid-column: 1 / -1;
  }
}

/* ≤ 768 (手机) */
@media (max-width: 768px) {
  .promo-bar {
    height: auto;
    min-height: 48px;
    padding: 8px 16px;
  }

  .promo-bar p {
    font-size: 12px;
    line-height: 18px;
  }

  .header-inner {
    height: 58px;
    padding: 0 16px;
    gap: 12px;
  }

  .brand-logo {
    width: 36px;
    height: 36px;
  }

  .brand-name {
    font-size: 16px;
  }

  .header-actions .header-icons {
    display: none;
  }

  .header-cta {
    height: 34px;
    padding: 0 14px;
    font-size: 13px;
  }

  .hero-inner {
    padding: 28px 16px;
  }

  .hero-title {
    font-size: 28px;
    line-height: 36px;
    letter-spacing: 1px;
  }

  .hero-subtitle {
    font-size: 15px;
    line-height: 22px;
  }

  .hero-bullets li {
    font-size: 14px;
    line-height: 28px;
  }

  .asic-badge {
    display: flex;
    width: min(300px, 100%);
    min-height: 90px;
    padding: 10px 36px;
    margin: 0 auto 20px;
  }

  .asic-text {
    font-size: 15px;
  }

  .asic-brand,
  .asic-license {
    font-size: 9px;
    line-height: 13px;
  }

  .signup-card {
    padding: 24px 20px 20px;
    border-radius: 14px;
    max-width: 100%;
  }

  .signup-title {
    font-size: 24px;
    letter-spacing: 1px;
  }

  .signup-subtitle {
    font-size: 18px;
  }

  .signup-input {
    height: 42px;
    font-size: 15px;
  }

  .signup-submit {
    height: 48px;
    font-size: 18px;
  }

  .highlights {
    padding: 40px 0;
  }

  .highlights-inner {
    grid-template-columns: 1fr 1fr;
    column-gap: 16px;
    row-gap: 16px;
    padding: 0 16px;
  }

  .hl-num {
    font-size: 26px;
    line-height: 30px;
  }

  .hl-label {
    font-size: 11px;
    letter-spacing: .8px;
  }

  .prices {
    padding: 40px 0;
  }

  .prices-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 24px;
  }

  .prices-title {
    font-size: 26px;
    line-height: 1.2;
    letter-spacing: .5px;
  }

  .prices-more {
    font-size: 14px;
  }

  .prices-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .price-name {
    font-size: 15px;
  }

  .price-value {
    font-size: 24px;
    line-height: 30px;
  }

  .prices-inner,
  .testimonials-inner,
  .why-grid,
  .footer-inner,
  .cta-inner {
    padding-left: 16px;
    padding-right: 16px;
  }

  .why {
    padding: 48px 0;
  }

  .why-title,
  .t-title,
  .faq-title {
    font-size: 26px;
    line-height: 1.3;
    letter-spacing: 1px;
  }

  .why-subtitle,
  .t-subtitle,
  .faq-subtitle {
    font-size: 15px;
    letter-spacing: .3px;
    margin-bottom: 28px;
  }

  .why-grid {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 0 16px;
  }

  .feature-card {
    min-height: auto;
    padding: 22px 20px;
  }

  .feature-card h3 {
    font-size: 17px;
    line-height: 24px;
    padding-top: 6px;
  }

  .feature-card p {
    font-size: 14px;
    line-height: 19px;
  }

  .testimonials {
    padding: 48px 0;
  }

  .t-card {
    padding: 28px 22px;
    gap: 18px;
  }

  .t-text {
    font-size: 13px;
    line-height: 20px;
  }

  .t-amount {
    font-size: 20px;
    line-height: 26px;
  }

  .faq {
    padding: 48px 0 56px;
  }

  .faq-list {
    padding: 0 16px;
    gap: 12px;
  }

  .faq-item {
    padding: 18px 20px;
  }

  .faq-item summary span {
    font-size: 15px;
    line-height: 22px;
  }

  .cta {
    padding: 48px 0;
    min-height: auto;
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
    text-align: left;
  }

  .cta-text h2 {
    font-size: 28px;
    line-height: 36px;
    letter-spacing: -.5px;
  }

  .cta-text p {
    font-size: 15px;
    line-height: 22px;
  }

  .cta-dividers {
    display: none;
  }

  .cta-actions {
    width: 100%;
    gap: 12px;
  }

  .cta-primary,
  .cta-ghost {
    flex: 1;
    width: auto;
    padding: 0 12px;
    height: 52px;
    font-size: 14px;
    letter-spacing: 1px;
  }

  .site-footer {
    padding: 48px 0 32px;
  }

  .footer-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

  .brand-col {
    grid-column: 1 / -1;
  }

  .brand-footer .brand-logo {
    width: 48px;
    height: 48px;
  }

  .footer-subscribe {
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 0;
  }

  .subs-form {
    width: 100%;
    max-width: 340px;
  }
  /* 覆盖桌面端 `right: 22px` 的偏移，让按钮贴齐表单右边 */
  .subs-form button,
  .subs-form > a {
    position: static;
    right: 0;
    left: auto;
  }

  .footer-legal {
    padding: 16px 18px 16px 20px;
    margin-top: 16px;
    gap: 18px;
  }

  .footer-legal p {
    font-size: 9px;
    line-height: 14px;
    letter-spacing: 0;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    padding-top: 24px;
  }
}

/* ≤ 480 (小手机) */
@media (max-width: 480px) {
  .highlights-inner {
    column-gap: 12px;
    row-gap: 12px;
  }

  .hl-num {
    font-size: 22px;
    line-height: 26px;
  }

  .hl-label {
    font-size: 10px;
    letter-spacing: .5px;
  }

  .hero-title {
    font-size: 24px;
    line-height: 32px;
  }

  .hero-subtitle {
    font-size: 14px;
    line-height: 20px;
  }

  .asic-badge {
    display: flex;
    width: min(260px, 100%);
    min-height: 80px;
    padding: 8px 28px;
    margin: 0 auto 16px;
  }

  .why-title,
  .t-title,
  .faq-title {
    font-size: 24px;
  }

  .cta-text h2 {
    font-size: 24px;
    line-height: 32px;
  }

  .footer-cols {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .brand-col {
    grid-column: 1;
  }

  .footer-col.brand-col {
    grid-column: 1;
  }

  .subs-big {
    font-size: 18px;
  }
}

/* ≥ 1920px: 大屏显示完整比例（用户确认此档完美，勿改） */
@media (min-width: 1920px) {
  :root {
    --container: 1440px;
    --container-wide: 1600px;
  }

  .hero-inner {
    padding: 0 0px 90px;
  }

  .why,
  .testimonials,
  .faq {
    padding-top: 120px;
    padding-bottom: 120px;
  }
}
/* ===== 隐藏 TradingView Lightweight Charts 水印（兜底，老版本未支持 attributionLogo 时生效） ===== */
.tv-lightweight-charts a[href*="tradingview"],
[class*="tv-lightweight-charts"] a[href*="tradingview"] {
  display: none !important;
}