/* ============================================================
   OZON超级智囊 官网 · USTA 风格 1:1 复刻 + DesignCode 价格卡
   ============================================================ */

:root {
  --bg: #000000;
  --white: #ffffff;
  --gray: #d1d5db;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC",
          "Source Han Sans SC", system-ui, -apple-system, sans-serif;
  --font-heading: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
                  "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, monospace;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: auto; }
body {
  background: var(--bg);
  color: var(--white);
  font-family: var(--font);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3, h4, h5, h6, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img, svg, video { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; }
[id] { scroll-margin-top: 84px; }
::-webkit-scrollbar { width: 0; height: 0; }
#content *::selection { background: #fff3dd; color: #000; }
:focus-visible { outline: 2px solid rgba(255,255,255,.8); outline-offset: 3px; }

/* ---------- 工具类 ---------- */
.container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 1rem; }
.flex { display: flex; }
.grid { display: grid; }
.relative { position: relative; }
.fixed { position: fixed; }
.left-0 { left: 0; } .right-0 { right: 0; } .top-0 { top: 0; }
.z-40 { z-index: 40; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.flex-col { flex-direction: column; }
.gap-8 { gap: 2rem; } .gap-10 { gap: 2.5rem; } .gap-20 { gap: 5rem; }
.text-white { color: var(--white); }
.bg-black { background: #000; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-base { font-size: 1rem; line-height: 1.5rem; }
.font-medium { font-weight: 500; }
.py-3 { padding-top: .75rem; padding-bottom: .75rem; }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }
.py-40 { padding-top: 10rem; padding-bottom: 10rem; }
.pb-4 { padding-bottom: 1rem; }
.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: 1rem; }
.mt-12 { margin-top: 3rem; }
.mt-20 { margin-top: 5rem; }
.w-full { width: 100%; }
.overflow-hidden { overflow: hidden; }
.whitespace-nowrap { white-space: nowrap; }
.col-span-1 { grid-column: span 1 / span 1; }
.leading-\[1\.2\] { line-height: 1.2; }
.max-w-\[700px\] { max-width: 700px; }
.md\:text-center { text-align: center; }

/* 首页内容默认可见（无加载页） */
#main-header, #content { opacity: 1; }
html.js .animate-on-scroll {
  opacity: 0; transform: translateY(26px);
  transition: opacity .8s ease, transform .9s var(--ease);
}
html.js .animate-on-scroll.is-inview { opacity: 1; transform: none; }

/* ---------- 顶栏 ---------- */
#main-header {
  -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
  background: linear-gradient(180deg, rgba(0,0,0,.55), rgba(0,0,0,.12));
}
#main-header .logo { height: 34px; width: auto; }
.nav-link { opacity: .78; transition: opacity .2s ease; }
.nav-link:hover { opacity: 1; }
.nav-btn {
  border: 1px solid rgba(255,255,255,.4); border-radius: .45rem;
  padding: .45rem 1.05rem; font-size: .9rem; font-weight: 600;
  letter-spacing: .06em; transition: background .2s ease, color .2s ease;
}
.nav-btn:hover { background: var(--white); color: #000; }
.hide-sm { display: inline-block; }

.hamburger {
  display: inline-flex; flex-direction: column; gap: 5px;
  padding: .65rem; background: transparent; border: 0;
}
.hamburger span { width: 22px; height: 2px; background: var(--white); transition: transform .28s var(--ease), opacity .2s ease; }
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.menu-list {
  position: fixed; top: 0; right: 0; height: 100vh; min-height: 100dvh;
  width: min(330px, 82vw); margin: 0;
  background: rgba(0,0,0,.92); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
  padding: 5.5rem 2.4rem 2rem 1.5rem;
  display: flex; flex-direction: column; gap: .15rem;
  transform: translateX(100%); transition: transform .38s var(--ease);
  text-align: right; z-index: 55;
}
.menu-list.open { transform: none; }
.menu-list a { display: block; padding: .78rem 0; font-size: 1.3rem; font-weight: 500; color: var(--white); transition: padding-right .25s var(--ease), opacity .2s; }
.menu-list a:hover { padding-right: .7rem; opacity: .8; }
.menu-divider { height: 1px; background: rgba(255,255,255,.18); margin: 1rem 0; }

/* ---------- 平滑滚动 ---------- */
#smooth-wrapper { position: relative; z-index: 1; }
html.smooth-on #smooth-wrapper { position: fixed; inset: 0; overflow: hidden; z-index: 1; }
html.smooth-on #smooth-content { will-change: transform; }

/* ---------- Hero ---------- */
.section-full { min-height: 100vh; display: flex; }
@media (min-width: 1024px) {
  .lg\:mb-gap { margin-bottom: 50vh; }
  .lg\:py-60 { padding-top: 15rem; padding-bottom: 15rem; }
  .lg\:mt-40 { margin-top: 10rem; }
  .lg\:mt-\[20vh\] { margin-top: 20vh; }
  .lg\:pb-40 { padding-bottom: 10rem; }
  .lg\:pt-0 { padding-top: 0; }
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(64px, 13vw, 150px);
  font-weight: 700; line-height: 1.02; letter-spacing: .01em;
  color: var(--white); margin-bottom: 2.2rem;
}
.hero-line { display: block; white-space: nowrap; }
.hero-line .text-outline { letter-spacing: .06em; }

.text-outline {
  color: transparent;
  -webkit-text-stroke: 1px var(--white);
}
@media (min-width: 1024px) {
  .text-outline { -webkit-text-stroke: 2px var(--white); }
}
.text-filled { color: var(--white); }

.subtitle {
  font-size: 1.5rem; line-height: 1.55; font-weight: 300;
  color: rgba(255,255,255,.74);
}
@media (min-width: 768px) { .subtitle { font-size: 1.875rem; } }
.subtitle strong { font-weight: 600; color: var(--white); }

.hero-actions { display: flex; gap: 1rem; margin-top: 2.4rem; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .9rem 1.7rem; border-radius: .45rem;
  font-size: .98rem; font-weight: 600; letter-spacing: .1em;
  text-decoration: none; transition: all .25s ease;
  border: 1px solid transparent;
}
.btn-solid { background: var(--white); color: #000; }
.btn-solid:hover { background: #e6e6ea; transform: translateY(-2px); }
.btn-ghost { border-color: rgba(255,255,255,.35); color: var(--white); }
.btn-ghost:hover { border-color: var(--white); background: rgba(255,255,255,.08); }
.hero-meta { margin-top: 1.5rem; font-size: .82rem; letter-spacing: .1em; color: rgba(255,255,255,.5); }

/* ---------- 宣言 ---------- */
.manifesto p {
  font-size: clamp(1.9rem, 4.5vw, 3.15rem);
  line-height: 1.4; font-weight: 400; letter-spacing: .02em; color: var(--white);
}
.manifesto .text-outline { -webkit-text-stroke: 1.5px var(--white); }
@media (min-width: 768px) { .manifesto .text-outline { -webkit-text-stroke: 2px var(--white); } }

/* ---------- 标题板块 ---------- */
.title {
  font-family: var(--font-heading);
  font-size: clamp(50px, 9.5vw, 120px);
  font-weight: 700; line-height: 1.02; letter-spacing: .01em;
  color: var(--white); margin-bottom: 1.6rem;
}
.grid.lg\:grid-cols-2 { grid-template-columns: 1fr; }
@media (min-width: 1024px) {
  .lg\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lg\:col-start-2 { grid-column-start: 2; }
}

/* ---------- 功能矩阵 ---------- */
.strip-title {
  font-family: var(--font-heading);
  font-size: clamp(50px, 9vw, 120px);
  font-weight: 700; line-height: 1; letter-spacing: .02em;
  color: var(--white); margin: 0;
}
.strip { width: max-content; animation: run 20s linear infinite; }
.strip.slower { animation-duration: 40s; }
.strip.reverse { animation-direction: reverse; }
@keyframes run { to { transform: translateX(-50%); } }

.strip-item {
  display: inline-flex; flex-direction: column; align-items: flex-start;
  margin-right: clamp(2rem, 5vw, 5rem); white-space: nowrap;
}
.strip-sub {
  display: flex; align-items: center; gap: .55rem;
  margin-top: .8rem;
  font-size: clamp(1rem, 1.7vw, 1.6rem); font-weight: 300;
  color: rgba(255,255,255,.72); font-family: var(--font);
}
.strip-sub::before {
  content: ""; width: .45rem; height: .45rem; border-radius: 50%;
  background: rgba(255,255,255,.75); flex: none;
}

.expertise-col-title {
  font-size: 1.875rem; font-weight: 500; color: var(--white);
  border-bottom: 1px solid rgba(255,255,255,.2);
  margin-bottom: 1rem; padding-bottom: 1rem;
}
.expertise-col ul li {
  padding: .5rem 0; font-size: 1.25rem; font-weight: 500;
  color: rgba(255,255,255,.85);
}

.bg-animate { position: relative; z-index: 10; mix-blend-mode: difference; }
.bg-animate::before {
  content: ""; position: absolute; left: -.5rem; right: -.5rem; bottom: .5rem;
  top: 100%; z-index: 0; background: var(--white);
  transition: all .7s cubic-bezier(0, 0, .2, 1);
}
.bg-animate:hover::before { top: 0; }
.mix-blend-difference { mix-blend-mode: difference; position: relative; z-index: 1; }

@media (min-width: 768px) {
  .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .md\:gap-20 { gap: 5rem; }
  .md\:text-center { text-align: center; }
}
@media (min-width: 1024px) {
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .lg\:text-gray-300 { color: rgba(255,255,255,.78); }
}

/* ---------- 价格板块（DesignCode 风格） ---------- */
.pricing-section { position: relative; }
.pricing-section .container { position: relative; z-index: 2; }
.pricing-bg-word {
  position: absolute; top: 200px; left: 50%; transform: translateX(-50%);
  font-size: clamp(4.8rem, 16vw, 12rem); font-weight: 700; letter-spacing: .05em;
  color: rgba(255,255,255,.07); pointer-events: none; user-select: none;
  white-space: nowrap; z-index: 1;
}
.pricing-intro { max-width: 52rem; margin: 0 auto; text-align: center; }
.pricing-intro h2 {
  font-size: clamp(2.05rem, 5.3vw, 4rem); line-height: 1.02;
  letter-spacing: -.02em; font-weight: 700; color: var(--white); margin: 0;
}
.pricing-pill {
  display: inline-flex; border: 1px solid rgba(255,255,255,.18);
  border-radius: .66rem; padding: .4rem .9rem;
  font-family: var(--font-mono); font-size: .68rem; font-weight: 500;
  letter-spacing: .2em; color: var(--white); background: rgba(255,255,255,.05);
  margin-bottom: 1.3rem;
}
.pricing-intro-note {
  margin: 1rem auto 0; max-width: 34rem;
  color: rgba(255,255,255,.7); font-size: .92rem; line-height: 1.6;
}
.pricing-plans-grid {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1fr;
  gap: 1.3rem; max-width: 520px; margin: 3.2rem auto 0;
}
@media (min-width: 961px) {
  .pricing-plans-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    max-width: 1160px; align-items: stretch;
  }
}

.spotlight-card {
  position: relative; border-radius: .72rem;
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.09);
  overflow: hidden; isolation: isolate;
  --mouse-x: 50%; --mouse-y: 0px;
}
.spotlight-card::before {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: radial-gradient(340px circle at var(--mouse-x) var(--mouse-y),
              rgba(255,255,255,.075), transparent 65%);
  opacity: 0; transition: opacity .3s ease;
}
.spotlight-card:hover::before { opacity: 1; }

.pricing-card {
  padding: 2.1rem 1.8rem 1.9rem;
  display: flex; flex-direction: column;
}
.pricing-card.is-featured {
  border-color: rgba(255,255,255,.34);
  background: rgba(255,255,255,.055);
}
.featured-badge {
  position: absolute; top: .78rem; left: 50%; transform: translateX(-50%);
  z-index: 3; background: #e8e8ea; color: #0f1012;
  font-family: var(--font-mono); font-size: .6rem; font-weight: 600;
  letter-spacing: .2em; padding: .34rem .85rem; border-radius: 999px;
  white-space: nowrap;
}
.pricing-card-top { display: flex; align-items: flex-start; margin-bottom: .4rem; }
.pricing-price-wrap { display: flex; align-items: flex-start; gap: .8rem; min-width: 0; }
.pricing-line { display: flex; align-items: flex-start; gap: .64rem; margin: 0; }
.new-price {
  font-family: var(--font-heading);
  font-size: clamp(1.9rem, 4.1vw, 2.6rem); font-weight: 700;
  color: var(--white); letter-spacing: -.02em; line-height: 1;
}
.pricing-meta {
  display: inline-flex; position: relative; flex-direction: column;
  align-items: flex-start; margin-top: .38rem; gap: .14rem;
}
.old-price {
  position: relative; display: inline-flex;
  color: rgba(255,255,255,.45); font-size: .9rem;
}
.old-price::after {
  content: ""; position: absolute; left: 0; right: 0; top: 50%;
  height: 1px; background: rgba(255,255,255,.55);
}
.price-cycle {
  font-size: .68rem; letter-spacing: .14em; text-transform: uppercase;
  color: rgba(255,255,255,.55); font-family: var(--font-mono);
}
.pricing-offer-label {
  position: absolute; top: calc(100% + .12rem); left: 0;
  color: rgba(255,255,255,.8); font-size: .58rem; font-weight: 600;
  letter-spacing: .1em; line-height: 1.15; white-space: nowrap;
  font-family: var(--font-mono);
}
.pricing-kicker {
  margin: 1.5rem 0 0; font-size: clamp(1.55rem, 3.45vw, 2.3rem);
  letter-spacing: -.02em; color: var(--white); font-weight: 700;
}
.pricing-note {
  margin-top: .75rem; color: rgba(255,255,255,.62);
  line-height: 1.62; font-size: .88rem; min-height: 4.5rem;
}
.pricing-cta {
  margin-top: 1.05rem; width: 100%; min-height: 3rem;
  padding: .85rem 1.2rem; display: inline-flex; align-items: center;
  justify-content: center; font-size: .78rem; font-weight: 600;
  letter-spacing: .1em; line-height: 1; color: #ffffffe0;
  border: 1px solid rgba(255,255,255,.18); border-radius: .65rem;
  background: #171719; text-decoration: none;
  transition: transform .15s ease, background-color .16s ease,
              border-color .16s ease, color .16s ease;
}
.pricing-cta:hover { background: #1d1d20; border-color: rgba(255,255,255,.32); transform: translateY(-1px); }
.pricing-cta.is-featured-cta {
  background: #e8e8ea; border-color: rgba(255,255,255,.6); color: #0f1012;
}
.pricing-cta.is-featured-cta:hover { background: #dedfe1; color: #0f1012; }
.pricing-feature-list {
  margin: 1rem 0 0; padding: 0; list-style: none;
  display: grid; gap: .62rem;
  font-size: .86rem; color: rgba(255,255,255,.8);
}
.pricing-feature-list li { position: relative; padding-left: 1.35rem; line-height: 1.55; }
.pricing-feature-list li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: rgba(255,255,255,.55); font-size: .8rem;
}
.pricing-footnote {
  margin: 2.3rem auto 0; max-width: 36rem; text-align: center;
  color: rgba(255,255,255,.45); font-size: .8rem; line-height: 1.6;
}

/* ---------- 联系 ---------- */
.contacts { text-align: center; }
.contact-box { display: flex; flex-direction: column; align-items: center; gap: 1rem; width: 100%; }
.contact-label {
  font-family: var(--font-mono); font-size: .8rem; letter-spacing: .24em;
  color: rgba(255,255,255,.55);
}
.contact-email {
  font-size: clamp(3rem, 12vw, 9rem); font-weight: 200;
  color: rgba(255,255,255,.88); line-height: 1.1; letter-spacing: .03em;
  cursor: pointer; transition: color .2s ease; word-break: break-all;
}
.contact-email:hover { color: var(--white); }
.contact-hint { font-size: .86rem; color: rgba(255,255,255,.5); }
.contact-qr { display: flex; flex-direction: column; align-items: center; gap: .65rem; margin-top: .8rem; }
.contact-qr img {
  width: 172px; height: 172px; object-fit: contain;
  background: var(--white); border-radius: .8rem; padding: .35rem;
  border: 1px solid rgba(255,255,255,.18);
}
.contact-qr span { font-size: .78rem; color: rgba(255,255,255,.55); }
.copy-btn {
  margin-top: .3rem; border: 1px solid rgba(255,255,255,.28);
  border-radius: .5rem; padding: .62rem 1.5rem; background: transparent;
  color: var(--white); font-size: .8rem; letter-spacing: .14em;
  transition: background .2s ease, color .2s ease;
}
.copy-btn:hover { background: var(--white); color: #000; }
.copy-tip { opacity: 0; transition: opacity .25s ease; color: #8be29a; font-size: .8rem; min-height: 1em; }
.copy-tip.show { opacity: 1; }

/* ---------- 页脚 ---------- */
.footer { padding-bottom: 3rem; }
.footer-line { margin-top: 2.5rem; font-size: 1rem; color: rgba(255,255,255,.7); }

/* ---------- 自定义光标 ---------- */
canvas { position: fixed; top: 0; left: 0; z-index: 0; pointer-events: none; }
#cursor { display: none; }
html[data-cursor="on"] * { cursor: none !important; }
html[data-cursor="on"] #cursor {
  display: block; position: fixed; top: 0; left: 0;
  width: 16px; height: 16px; margin: -8px 0 0 -8px;
  border-radius: 50%; background: var(--white);
  mix-blend-mode: difference; pointer-events: none;
  z-index: 999999; will-change: transform;
}

/* ---------- 逐词显现 ---------- */
.word { display: inline-block; overflow: hidden; vertical-align: bottom; padding-bottom: .06em; margin-bottom: -.06em; }
.word-i {
  display: inline-block; transform: translateY(120%); filter: blur(6px);
  transition: transform .9s var(--ease), filter .9s var(--ease);
  transition-delay: calc(var(--i, 0) * .035s);
}
.is-inview .word-i { transform: none; filter: none; }

/* ---------- 移动端 ---------- */
@media (max-width: 720px) {
  .hide-sm { display: none !important; }
  .hero-title { font-size: clamp(52px, 17vw, 96px); }
  .title { font-size: clamp(44px, 13vw, 80px); }
  .strip-title { font-size: clamp(44px, 13vw, 80px); }
  .gap-20 { gap: 3rem; }
  .contact-email { font-size: clamp(2.6rem, 13vw, 4.6rem); }
}

/* ---------- 弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .strip { animation-duration: 120s; }
  .word-i { transform: none; filter: none; transition: none; }
  html.js .animate-on-scroll { opacity: 1; transform: none; transition: none; }
  html[data-cursor="on"] #cursor { display: none; }
  html[data-cursor="on"] * { cursor: auto !important; }
  .menu-list { transition: none; }
}

/* ============================================================
   解决方案板块（1:1 复刻 fxifyfutures.com/how 的 Our Benefits）
   ============================================================ */
.benefits {
  width: 100%;
  padding-inline: 12.0529801325vw;
  position: relative;
  margin-top: 6.6225165563vw;
  padding-bottom: 9.9337748344vw;
}
@media (max-width: 768px) {
  .benefits { padding-inline: 4.6153846154vw; margin-top: 23.0769230769vw; }
}
@media (max-width: 640px) {
  .benefits { padding-inline: 4.6511627907vw; margin-top: 34.8837209302vw; }
}

.benefits-header { display: flex; justify-content: space-between; }
@media (max-width: 768px) { .benefits-header { flex-direction: column; gap: 3.0769230769vw; } }
@media (max-width: 640px) { .benefits-header { gap: 4.6511627907vw; } }

.benefits-header-half { display: flex; flex-direction: column; justify-content: space-between; width: fit-content; }

.benefits-label {
  width: fit-content;
  padding: .6622516556vw 1.059602649vw;
  border-radius: 1000px;
  border: .0993377483vw solid hsla(0,0%,100%,.1);
  background: linear-gradient(180deg, rgba(8,5,32,.4), rgba(38,42,84,.4));
  -webkit-backdrop-filter: blur(.1324503311vw); backdrop-filter: blur(.1324503311vw);
}
@media (max-width: 768px) { .benefits-label { padding: 1.5384615385vw 2.4615384615vw; border-width: .2307692308vw; } }
@media (max-width: 640px) { .benefits-label { padding: 2.3255813953vw 3.7209302326vw; border-width: .3488372093vw; } }
.benefits-label span {
  font-size: .9271523179vw; font-weight: 600;
  background: linear-gradient(90deg, #b9c3f4, #6c728e);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
@media (max-width: 768px) { .benefits-label span { font-size: 2.1538461538vw; } }
@media (max-width: 640px) { .benefits-label span { font-size: 3.2558139535vw; } }

.benefits-title {
  margin-top: .6622516556vw;
  font-size: 3.642384106vw; font-weight: 600; line-height: 125%; letter-spacing: -.02em;
  background: linear-gradient(180deg, #d3d5e5 .17%, #aeb0c9 99.83%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
@media (max-width: 768px) { .benefits-title { font-size: 8.4615384615vw; } }
@media (max-width: 640px) { .benefits-title { font-size: 9.7674418605vw; } }

.benefits-text {
  width: 25.1655629139vw;
  font-size: .9271523179vw; line-height: 142.857%; font-weight: 600;
  background: linear-gradient(90deg, #b9c3f4 20%, #6c728e);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
@media (max-width: 768px) { .benefits-text { width: 100%; font-size: 2.1538461538vw; } }
@media (max-width: 640px) { .benefits-text { font-size: 3.2558139535vw; } }

.benefits-btn { margin-top: 2.6490066225vw; }
@media (max-width: 768px) { .benefits-btn { margin-top: 3.0769230769vw; } }
@media (max-width: 640px) { .benefits-btn { margin-top: 4.6511627907vw; } }

.btn-purple {
  position: relative; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center; gap: 18px;
  width: fit-content; padding: 16px 36px;
  color: #fff; font-size: 18px; line-height: 100%; font-weight: 500;
  border-radius: 18px; border: 1px solid rgba(153,218,255,.3);
  background: #3a48e0;
  box-shadow: 0 0 30px rgba(58,72,224,.5);
  cursor: pointer; min-height: 54px;
  transition: opacity .2s ease, transform .2s ease;
}
.btn-purple:hover { opacity: .8; }
.btn-purple:active { scale: .98; }
.btn-purple svg { height: 20px; width: auto; }
.btn-purple svg path[fill] { fill: #fff; }
.btn-purple::before {
  content: ""; position: absolute; left: 50%; bottom: 0; translate: -50% 75%;
  width: 80%; height: 120%; background: #bdbbf5;
  filter: blur(15px); border-radius: 100%; pointer-events: none;
}
@media (max-width: 768px) { .btn-purple { box-shadow: 0 0 4.6153846154vw rgba(58,72,224,.5); } }
@media (max-width: 640px) {
  .btn-purple { gap: 2.7906976744vw; padding: 3.2558139535vw 5.1162790698vw; font-size: 3.2558139535vw; border-radius: 2.7906976744vw; border-width: .2325581395vw; min-height: 8.1395348837vw; }
  .btn-purple svg { height: 3.2558139535vw; }
}

.benefits-grid {
  display: grid; grid-template-columns: repeat(6, 1fr);
  gap: 1.3245033113vw; width: 100%; margin-top: 5.298013245vw;
  mix-blend-mode: screen;
}
@media (max-width: 768px) { .benefits-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .benefits-grid { grid-template-columns: repeat(1, 1fr); } }
.benefits-grid > .benefit-card:nth-child(1),
.benefits-grid > .benefit-card:nth-child(2) { grid-column: span 3/span 3; height: 26.4900662252vw; }
.benefits-grid > .benefit-card:nth-child(n+3) { grid-column: span 2/span 2; height: 31.7880794702vw; }
@media (max-width: 768px) { .benefits-grid > .benefit-card { grid-column: span 1/span 1 !important; height: 46.1538461538vw !important; } }
@media (max-width: 640px) { .benefits-grid > .benefit-card { height: 81.3953488372vw !important; } }

.benefit-card {
  position: relative; overflow: hidden;
  display: flex; flex-direction: column; align-items: center; justify-content: flex-end;
  gap: 1.5894039735vw;
  padding-bottom: 2.6490066225vw; padding-inline: 2.3178807947vw;
  border-radius: 1.059602649vw;
  -webkit-backdrop-filter: blur(.2649006623vw); backdrop-filter: blur(.2649006623vw);
  background: linear-gradient(166deg, hsla(0,0%,100%,0) 4.29%, hsla(0,0%,100%,.01) 72.39%);
}
@media (max-width: 768px) { .benefit-card { gap: 2.1538461538vw; padding-bottom: 3.0769230769vw; padding-inline: 3.0769230769vw; border-radius: 2.4615384615vw; } }
@media (max-width: 640px) { .benefit-card { gap: 5.5813953488vw; padding-bottom: 6.976744186vw; padding-inline: 4.6511627907vw; border-radius: 3.7209302326vw; } }
.benefit-card::before {
  content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  border: .0993377483vw solid rgba(213,223,255,.094);
  border-radius: inherit; z-index: -2;
}
@media (max-width: 768px) { .benefit-card::before { border-width: .2307692308vw; } }
@media (max-width: 640px) { .benefit-card::before { border-width: .3488372093vw; } }

.benefit-card-bg {
  position: absolute; z-index: -1; overflow: hidden;
  top: 50%; left: 50%; translate: -50% -50%;
  width: 101%; height: 101%; border-radius: inherit;
}
.benefit-card-bg video { width: 100%; height: 100%; object-fit: cover; }

.benefit-card-border {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  border: 0 solid transparent; border-radius: inherit;
  transition: .7s ease-in-out; transition-property: opacity;
  z-index: -1;
}
.benefit-card-border canvas {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  pointer-events: none;
  border: 1px solid transparent; border-radius: inherit;
}

.benefit-card-label {
  display: flex; justify-content: center; align-items: center;
  gap: .5298013245vw;
  font-size: 1.059602649vw; font-weight: 700; line-height: 100%; letter-spacing: -.021192053vw;
  background: linear-gradient(90deg, #6871ff, #5c5f9a);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
@media (max-width: 768px) { .benefit-card-label { gap: 1.2307692308vw; font-size: 2.4615384615vw; } }
@media (max-width: 640px) { .benefit-card-label { gap: 1.8604651163vw; font-size: 3.7209302326vw; } }
.benefit-card-label svg { height: 1.1920529801vw; width: auto; }
@media (max-width: 768px) { .benefit-card-label svg { height: 2.7692307692vw; } }
@media (max-width: 640px) { .benefit-card-label svg { height: 4.1860465116vw; } }

.benefit-card-title {
  width: 70%; text-align: center;
  font-size: 1.3245033113vw; font-weight: 500; line-height: 120%; letter-spacing: -.02em;
  background: linear-gradient(180deg, #d3d5e5 .17%, #aeb0c9 99.83%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
@media (max-width: 768px) { .benefit-card-title { font-size: 3.0769230769vw; } }
@media (max-width: 640px) { .benefit-card-title { font-size: 4.6511627907vw; } }

.benefit-card-text {
  min-height: 3.9735099338vw; text-align: center;
  font-size: .9271523179vw; font-weight: 500; line-height: 142.857%;
  background: linear-gradient(90deg, #b9c3f4, #6c728e);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
@media (max-width: 768px) { .benefit-card-text { font-size: 2.1538461538vw; } }
@media (max-width: 640px) { .benefit-card-text { font-size: 3.2558139535vw; } }

/* ============================================================
   登录 / 免费试用 弹窗（风格与官网一致）
   ============================================================ */
.auth-modal {
  position: fixed; inset: 0; z-index: 90;
  display: none; align-items: center; justify-content: center;
  padding: 20px;
}
.auth-modal.is-open { display: flex; }
.auth-backdrop {
  position: absolute; inset: 0;
  background: rgba(0,0,0,.72);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
}
.auth-panel {
  position: relative; width: 100%; max-width: 420px;
  background: #0a081c;
  border: 1px solid rgba(213,223,255,.14);
  border-radius: 20px;
  padding: 34px 30px 26px;
  box-shadow: 0 0 70px rgba(58,72,224,.22), 0 24px 80px rgba(0,0,0,.65);
  overflow: hidden;
}
.auth-panel::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(142,146,238,.65), transparent);
}
.auth-close {
  position: absolute; top: 12px; right: 14px;
  background: none; border: 0; color: rgba(255,255,255,.5);
  font-size: 24px; line-height: 1; cursor: pointer; padding: 6px;
  transition: color .2s;
}
.auth-close:hover { color: #fff; }
.auth-tabs {
  display: flex; gap: 6px; width: 100%; margin-bottom: 22px; padding: 4px;
  border: 1px solid rgba(255,255,255,.1); border-radius: 12px;
  background: rgba(13,11,36,.8);
}
.auth-tab {
  flex: 1; padding: 10px 0; border: 0; border-radius: 9px;
  background: transparent; color: rgba(255,255,255,.55);
  font-size: 14px; font-weight: 600; letter-spacing: .12em;
  cursor: pointer; transition: background .2s, color .2s, box-shadow .2s;
}
.auth-tab.is-active {
  background: #3a48e0; color: #fff;
  box-shadow: 0 0 18px rgba(58,72,224,.45);
}
.auth-view { display: none; }
.auth-view.is-active { display: block; }
.auth-title {
  font-size: 26px; font-weight: 600; line-height: 1.15; margin: 0 0 6px;
  background: linear-gradient(180deg, #d3d5e5 .17%, #aeb0c9 99.83%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.auth-sub { font-size: 13px; color: rgba(255,255,255,.55); margin: 0 0 18px; }
.auth-label {
  display: block; font-size: 12px; color: rgba(255,255,255,.6);
  margin: 12px 0 6px; letter-spacing: .06em;
}
.auth-input {
  width: 100%; box-sizing: border-box;
  background: rgba(18,16,43,.9);
  border: 1px solid rgba(255,255,255,.12); border-radius: 10px;
  padding: 12px 14px; color: #fff; font-size: 14px; outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.auth-input:focus { border-color: #6871ff; box-shadow: 0 0 0 3px rgba(104,113,255,.15); }
.auth-input::placeholder { color: rgba(255,255,255,.3); }
.auth-captcha-row { display: flex; gap: 10px; align-items: center; }
.auth-captcha-row .auth-input { flex: 1; }
.auth-code-btn {
  flex: none; min-width: 108px; height: 46px;
  border: 1px solid rgba(153,218,255,.3); border-radius: 10px;
  background: #3a48e0; color: #fff;
  font-size: 13px; font-weight: 600; letter-spacing: .04em;
  cursor: pointer; transition: opacity .2s;
}
.auth-code-btn:hover { opacity: .85; }
.auth-code-btn:disabled { opacity: .5; cursor: default; }
.auth-forgot { text-align: right; margin: 4px 0 0; }
.auth-forgot .auth-link { font-size: 12px; }
.auth-remember {
  display: flex; align-items: center; gap: 8px;
  margin: 12px 0 0; font-size: 12px; color: rgba(255,255,255,.65);
  cursor: pointer; user-select: none;
}
.auth-remember input[type="checkbox"] {
  width: 14px; height: 14px; margin: 0; flex: none;
  accent-color: #6871ff; cursor: pointer;
}
.auth-remember:hover { color: rgba(255,255,255,.9); }
.auth-success {
  min-height: 18px; font-size: 12px; color: #4ade80; margin: 8px 0 2px;
}
.auth-error {
  min-height: 18px; font-size: 12px; color: #f87171; margin: 8px 0 2px;
}
.auth-submit {
  width: 100%; margin-top: 10px; padding: 13px 0;
  border: 0; border-radius: 12px;
  background: #3a48e0; color: #fff;
  font-size: 15px; font-weight: 600; letter-spacing: .14em;
  cursor: pointer; box-shadow: 0 0 24px rgba(58,72,224,.4);
  transition: opacity .2s, transform .2s;
}
.auth-submit:hover { opacity: .85; }
.auth-submit:active { scale: .99; }
.auth-submit:disabled { opacity: .5; cursor: default; }
.auth-muted {
  font-size: 12px; color: rgba(255,255,255,.5);
  text-align: center; margin: 14px 0 0;
}
.auth-link {
  background: none; border: 0; padding: 0;
  color: #8e92ee; cursor: pointer; text-decoration: underline;
}
@media (max-width: 640px) {
  .auth-panel { padding: 26px 20px 22px; }
}