Update style.css

style.css

@@ -1,28 +1,991 @@
+:root {
+  --page-bg: #fafafa;
+  --surface: #ffffff;
+  --text: #0f172a;
+  --text-secondary: #64748b;
+  --text-muted: #94a3b8;
+  --border: #e2e8f0;
+  --indigo: #4f46e5;
+  --violet: #7c3aed;
+  --gradient: linear-gradient(90deg, #2563eb 0%, #7c3aed 100%);
+  --card-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 16px 40px -12px rgba(79, 70, 229, 0.14);
+  --wide-shadow: 0 2px 4px rgba(15, 23, 42, 0.04), 0 24px 60px -16px rgba(79, 70, 229, 0.18);
+  --font: "Inter", "SF Pro Text", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
+}
+
+* {
+  box-sizing: border-box;
+}
+
+[hidden] {
+  display: none !important;
+}
+
+html {
+  scroll-behavior: smooth;
+  -webkit-text-size-adjust: 100%;
+  text-size-adjust: 100%;
+  overflow-x: hidden;
+}
+
 body {
-	padding: 2rem;
-	font-family: -apple-system, BlinkMacSystemFont, "Arial", sans-serif;
+  min-width: 320px;
+  margin: 0;
+  overflow-x: hidden;
+  background: var(--page-bg);
+  color: var(--text);
+  font-family: var(--font);
+  -webkit-font-smoothing: antialiased;
+  text-rendering: optimizeLegibility;
+}
+
+button,
+input {
+  font: inherit;
+}
+
+button,
+a {
+  -webkit-tap-highlight-color: transparent;
+}
+
+a {
+  color: inherit;
+  text-decoration: none;
+}
+
+svg {
+  display: block;
+}
+
+.container {
+  width: min(100% - 48px, 1120px);
+  margin-inline: auto;
+}
+
+.page-glow {
+  position: fixed;
+  z-index: -1;
+  pointer-events: none;
+  border-radius: 999px;
+  filter: blur(60px);
+}
+
+.page-glow--top {
+  top: -35vh;
+  left: 50%;
+  width: 62vh;
+  height: 62vh;
+  transform: translateX(-50%);
+  background: radial-gradient(circle, rgba(79, 70, 229, 0.55), transparent 70%);
+  opacity: 0.07;
+}
+
+.page-glow--side {
+  top: 24vh;
+  right: -18vh;
+  width: 42vh;
+  height: 42vh;
+  background: radial-gradient(circle, rgba(139, 92, 246, 0.5), transparent 70%);
+  opacity: 0.05;
+}
+
+.site-header {
+  position: sticky;
+  top: 0;
+  z-index: 20;
+  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
+  background: rgba(250, 250, 250, 0.86);
+  backdrop-filter: blur(14px);
+  -webkit-backdrop-filter: blur(14px);
+}
+
+.header-inner {
+  display: flex;
+  width: 100%;
+  align-items: center;
+  padding: 12px 32px;
+}
+
+.brand {
+  display: inline-flex;
+  align-items: center;
+  gap: 10px;
+  font-size: 16px;
+  font-weight: 700;
+  letter-spacing: -0.025em;
+  transition: opacity 150ms ease;
+}
+
+.brand:hover {
+  opacity: 0.76;
+}
+
+.brand-icon {
+  display: inline-flex;
+  width: 36px;
+  height: 36px;
+  flex: 0 0 auto;
+  align-items: center;
+  justify-content: center;
+  border-radius: 12px;
+  color: #fff;
+  background: linear-gradient(135deg, #2563eb, #7c3aed);
+  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.12);
+}
+
+.brand-icon svg {
+  width: 18px;
+  height: 18px;
+}
+
+.brand-icon path {
+  fill: none;
+  stroke: currentColor;
+  stroke-width: 1.6;
+  stroke-linecap: round;
+  stroke-linejoin: round;
+}
+
+.brand-icon circle {
+  fill: currentColor;
+}
+
+.brand-gradient,
+.footer-brand span {
+  color: transparent;
+  background: linear-gradient(90deg, #2563eb, #7c3aed);
+  background-clip: text;
+  -webkit-background-clip: text;
+}
+
+.hero {
+  position: relative;
+  overflow: hidden;
+  padding: 42px 0 76px;
+}
+
+.hero-container {
+  position: relative;
+  z-index: 1;
+  text-align: center;
+}
+
+.hero h1 {
+  max-width: 768px;
+  margin: 0 auto;
+  font-size: clamp(2.15rem, calc(2.8vw + 1.25rem), 3.5rem);
+  font-weight: 700;
+  line-height: 1.05;
+  letter-spacing: -0.045em;
+}
+
+.hero h1 span {
+  display: block;
+}
+
+.hero-subtitle {
+  max-width: 600px;
+  margin: 12px auto 24px;
+  color: var(--text-secondary);
+  font-size: 16px;
+  line-height: 1.6;
+}
+
+.network-pattern {
+  position: absolute;
+  inset: 0;
+  opacity: 0.28;
+  background-image: radial-gradient(circle, rgba(99, 102, 241, 0.28) 1px, transparent 1.6px);
+  background-size: 30px 30px;
+  mask-image: radial-gradient(ellipse 63% 62% at 50% 45%, transparent 56%, #000 100%);
+  -webkit-mask-image: radial-gradient(ellipse 63% 62% at 50% 45%, transparent 56%, #000 100%);
+  pointer-events: none;
+}
+
+.hero-node {
+  position: absolute;
+  border: 1px dashed rgba(129, 140, 248, 0.38);
+  border-radius: 50%;
+  pointer-events: none;
+}
+
+.hero-node::after {
+  content: "";
+  position: absolute;
+  inset: 8px;
+  border-radius: inherit;
+  background: linear-gradient(135deg, #eef2ff, #ddd6fe);
+  box-shadow: 0 12px 32px -10px rgba(99, 102, 241, 0.22);
+}
+
+.hero-node--left {
+  top: 185px;
+  left: max(18px, calc(50% - 455px));
+  width: 72px;
+  height: 72px;
+  opacity: 0.62;
+}
+
+.hero-node--right {
+  right: max(20px, calc(50% - 445px));
+  bottom: 105px;
+  width: 54px;
+  height: 54px;
+  opacity: 0.5;
 }
 
-h1 {
-	font-size: 16px;
-	margin-top: 0;
+.upload-shell {
+  width: min(100%, 672px);
+  margin-inline: auto;
 }
 
-p {
-	color: rgb(107, 114, 128);
-	font-size: 15px;
-	margin-bottom: 10px;
-	margin-top: 5px;
+.upload-card {
+  position: relative;
+  overflow: hidden;
+  min-height: 264px;
+  padding: 40px 40px 22px;
+  border: 1px solid var(--border);
+  border-radius: 32px;
+  background: var(--surface);
+  box-shadow: var(--wide-shadow);
+  cursor: pointer;
+  outline: none;
+  transition: border-color 200ms ease, background-color 200ms ease, box-shadow 200ms ease, transform 200ms ease;
 }
 
-.card {
-	max-width: 620px;
-	margin: 0 auto;
-	padding: 16px;
-	border: 1px solid lightgray;
-	border-radius: 16px;
+.upload-card:hover,
+.upload-card:focus-visible {
+  border-color: rgba(165, 180, 252, 0.8);
+  box-shadow: 0 2px 4px rgba(15, 23, 42, 0.04), 0 28px 68px -16px rgba(79, 70, 229, 0.22);
 }
 
-.card p:last-child {
-	margin-bottom: 0;
+.upload-card.is-dragging {
+  border-color: #a5b4fc;
+  background: rgba(238, 242, 255, 0.42);
+  transform: scale(1.005);
+}
+
+.upload-accent {
+  position: absolute;
+  inset: 0 0 auto;
+  height: 4px;
+  background: linear-gradient(90deg, #3b82f6, #6366f1, #8b5cf6);
+  opacity: 0.7;
+}
+
+.upload-empty,
+.upload-preview {
+  display: flex;
+  min-height: 150px;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  gap: 14px;
+}
+
+.upload-icon {
+  position: relative;
+  display: inline-flex;
+  width: 64px;
+  height: 64px;
+  align-items: center;
+  justify-content: center;
+  border: 1px solid rgba(199, 210, 254, 0.75);
+  border-radius: 16px;
+  color: #4f46e5;
+  background: linear-gradient(135deg, #eef2ff, #f5f3ff);
+}
+
+.upload-icon::before {
+  content: "";
+  position: absolute;
+  inset: -8px;
+  border: 1.5px dashed rgba(129, 140, 248, 0.35);
+  border-radius: 20px;
+  animation: ring-pulse 3.6s ease-in-out infinite;
+}
+
+.upload-icon svg {
+  width: 27px;
+  height: 27px;
+}
+
+.upload-icon path,
+.card-icon path,
+.card-icon circle,
+.card-icon rect {
+  fill: none;
+  stroke: currentColor;
+  stroke-width: 1.55;
+  stroke-linecap: round;
+  stroke-linejoin: round;
+}
+
+.upload-title {
+  margin: 0;
+  font-size: 24px;
+  font-weight: 700;
+  letter-spacing: -0.025em;
+}
+
+.upload-prompt {
+  margin: 5px 0 0;
+  color: var(--text-secondary);
+  font-size: 15px;
+}
+
+.upload-prompt span {
+  color: #4f46e5;
+  font-weight: 500;
+}
+
+.upload-preview img {
+  width: 144px;
+  height: 144px;
+  border: 1px solid #e0e7ff;
+  border-radius: 16px;
+  object-fit: cover;
+  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.14);
+}
+
+.preview-details {
+  display: flex;
+  max-width: 100%;
+  align-items: center;
+  justify-content: center;
+  gap: 12px;
+  color: #475569;
+  font-size: 14px;
+}
+
+#file-name {
+  max-width: 260px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.change-photo {
+  padding: 0;
+  border: 0;
+  color: #4f46e5;
+  background: transparent;
+  cursor: pointer;
+  text-decoration: underline;
+  text-underline-offset: 2px;
+}
+
+.upload-meta {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  justify-content: center;
+  gap: 4px 20px;
+  margin-top: 18px;
+  color: var(--text-muted);
+  font-size: 12px;
+  line-height: 1.5;
+}
+
+.upload-meta strong {
+  color: var(--text-secondary);
+  font-weight: 500;
+}
+
+.meta-dot {
+  color: #cbd5e1;
+}
+
+.upload-error {
+  margin: 10px 0 0;
+  color: #e11d48;
+  font-size: 14px;
+}
+
+.primary-button {
+  display: inline-flex;
+  min-height: 48px;
+  align-items: center;
+  justify-content: center;
+  padding: 13px 40px;
+  border: 0;
+  border-radius: 999px;
+  color: #fff;
+  background: var(--gradient);
+  box-shadow: 0 4px 16px rgba(79, 70, 229, 0.28);
+  cursor: pointer;
+  font-size: 15px;
+  font-weight: 600;
+  letter-spacing: 0.04em;
+  line-height: 1.2;
+  transition: transform 200ms ease, box-shadow 200ms ease, opacity 200ms ease;
+}
+
+.primary-button:not(:disabled):hover {
+  transform: scale(1.02);
+  box-shadow: 0 6px 22px rgba(79, 70, 229, 0.38);
+}
+
+.primary-button:focus-visible {
+  outline: 3px solid rgba(99, 102, 241, 0.28);
+  outline-offset: 3px;
+}
+
+.primary-button:disabled {
+  opacity: 0.4;
+  cursor: not-allowed;
+}
+
+.hero-button {
+  margin-top: 16px;
+}
+
+.capabilities {
+  display: flex;
+  max-width: 920px;
+  flex-wrap: wrap;
+  align-items: center;
+  justify-content: center;
+  gap: 8px 16px;
+  margin: 16px auto 0;
+  color: var(--text-muted);
+  font-size: 12px;
+}
+
+.capabilities span {
+  white-space: nowrap;
+}
+
+.capabilities span::first-letter {
+  color: #6366f1;
+}
+
+.section {
+  padding: 92px 0;
+}
+
+.features {
+  border-top: 1px solid rgba(226, 232, 240, 0.75);
+  background: rgba(255, 255, 255, 0.55);
+}
+
+.section-heading {
+  max-width: 720px;
+  margin: 0 auto 42px;
+  text-align: center;
+}
+
+.section-heading h2,
+.final-cta h2 {
+  margin: 0;
+  font-size: clamp(2rem, 3.5vw, 2.65rem);
+  font-weight: 700;
+  line-height: 1.14;
+  letter-spacing: -0.04em;
+}
+
+.section-heading p {
+  margin: 14px auto 0;
+  color: var(--text-secondary);
+  font-size: 16px;
+  line-height: 1.7;
+}
+
+.feature-grid {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  gap: 20px;
+}
+
+.info-card {
+  min-height: 238px;
+  padding: 28px;
+  border: 1px solid var(--border);
+  border-radius: 24px;
+  background: var(--surface);
+  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.03), 0 14px 34px -20px rgba(79, 70, 229, 0.22);
+  transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
+}
+
+.info-card:hover {
+  transform: translateY(-2px);
+  border-color: #c7d2fe;
+  box-shadow: var(--card-shadow);
+}
+
+.card-icon {
+  display: inline-flex;
+  width: 46px;
+  height: 46px;
+  align-items: center;
+  justify-content: center;
+  border: 1px solid #e0e7ff;
+  border-radius: 14px;
+  color: #4f46e5;
+  background: linear-gradient(135deg, #eef2ff, #f5f3ff);
+}
+
+.card-icon svg {
+  width: 22px;
+  height: 22px;
+}
+
+.info-card h3,
+.step h3 {
+  margin: 20px 0 9px;
+  font-size: 18px;
+  font-weight: 700;
+  letter-spacing: -0.025em;
+}
+
+.info-card p,
+.step p {
+  margin: 0;
+  color: var(--text-secondary);
+  font-size: 14px;
+  line-height: 1.7;
+}
+
+.how-it-works {
+  background: var(--page-bg);
+}
+
+.steps {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  gap: 52px;
+  max-width: 1020px;
+  margin: 0 auto;
+}
+
+.step {
+  position: relative;
+  text-align: center;
+}
+
+.step:not(:last-child)::after {
+  content: "";
+  position: absolute;
+  top: 28px;
+  left: calc(50% + 48px);
+  width: calc(100% - 44px);
+  height: 1px;
+  background: linear-gradient(90deg, #c7d2fe, #ddd6fe);
+}
+
+.step-number {
+  position: relative;
+  z-index: 1;
+  display: inline-flex;
+  width: 58px;
+  height: 58px;
+  align-items: center;
+  justify-content: center;
+  border: 1px solid #c7d2fe;
+  border-radius: 50%;
+  color: #4f46e5;
+  background: linear-gradient(135deg, #fff, #f5f3ff);
+  box-shadow: 0 8px 22px -12px rgba(79, 70, 229, 0.45);
+  font-size: 14px;
+  font-weight: 700;
+  letter-spacing: 0.06em;
+}
+
+.step h3 {
+  margin-top: 20px;
+}
+
+.section-button {
+  margin: 42px auto 0;
+}
+
+.how-it-works .container {
+  text-align: center;
+}
+
+.faq-section {
+  border-top: 1px solid rgba(226, 232, 240, 0.75);
+  background: rgba(255, 255, 255, 0.58);
+}
+
+.faq-container {
+  max-width: 880px;
+}
+
+.faq-section .section-heading {
+  margin-bottom: 34px;
+}
+
+.faq-list {
+  display: grid;
+  gap: 12px;
+}
+
+.faq-item {
+  overflow: hidden;
+  border: 1px solid var(--border);
+  border-radius: 18px;
+  background: var(--surface);
+  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.03);
+  transition: border-color 180ms ease, box-shadow 180ms ease;
+}
+
+.faq-item.is-open {
+  border-color: #c7d2fe;
+  box-shadow: 0 8px 28px -22px rgba(79, 70, 229, 0.36);
+}
+
+.faq-item h3 {
+  margin: 0;
+}
+
+.faq-question {
+  display: flex;
+  width: 100%;
+  align-items: center;
+  justify-content: space-between;
+  gap: 24px;
+  padding: 21px 22px;
+  border: 0;
+  color: var(--text);
+  background: transparent;
+  cursor: pointer;
+  text-align: left;
+  font-size: 15px;
+  font-weight: 700;
+  line-height: 1.45;
+}
+
+.faq-question:focus-visible {
+  outline: 3px solid rgba(99, 102, 241, 0.2);
+  outline-offset: -3px;
+}
+
+.chevron {
+  width: 9px;
+  height: 9px;
+  flex: 0 0 auto;
+  margin-right: 3px;
+  border-right: 1.75px solid #64748b;
+  border-bottom: 1.75px solid #64748b;
+  transform: rotate(45deg) translateY(-2px);
+  transition: transform 180ms ease;
+}
+
+.faq-question[aria-expanded="true"] .chevron {
+  transform: rotate(225deg) translate(-2px, -2px);
+}
+
+.faq-answer {
+  max-height: 0;
+  overflow: hidden;
+  opacity: 0;
+  transition: max-height 220ms ease, opacity 180ms ease;
+}
+
+.faq-answer.is-open {
+  max-height: 260px;
+  opacity: 1;
+}
+
+.faq-answer p {
+  margin: 0;
+  padding: 0 54px 22px 22px;
+  color: var(--text-secondary);
+  font-size: 14px;
+  line-height: 1.7;
+}
+
+.final-cta {
+  padding: 94px 0 100px;
+  text-align: center;
+}
+
+.final-cta p {
+  max-width: 620px;
+  margin: 15px auto 28px;
+  color: var(--text-secondary);
+  font-size: 16px;
+  line-height: 1.65;
+}
+
+.site-footer {
+  border-top: 1px solid rgba(226, 232, 240, 0.8);
+  background: rgba(255, 255, 255, 0.72);
+}
+
+.footer-inner {
+  padding-top: 32px;
+  padding-bottom: 30px;
+  text-align: center;
+}
+
+.footer-brand {
+  margin: 0;
+  font-size: 15px;
+  font-weight: 700;
+  letter-spacing: -0.02em;
+}
+
+.footer-topics {
+  display: flex;
+  flex-wrap: wrap;
+  justify-content: center;
+  gap: 4px 10px;
+  margin: 14px 0 0;
+  color: var(--text-secondary);
+  font-size: 13px;
+}
+
+.copyright {
+  margin: 16px 0 0;
+  color: var(--text-muted);
+  font-size: 12px;
+}
+
+@keyframes ring-pulse {
+  0%,
+  100% {
+    opacity: 0.45;
+    transform: scale(1);
+  }
+  50% {
+    opacity: 0.85;
+    transform: scale(1.04);
+  }
+}
+
+@media (max-width: 767px) {
+  .container {
+    width: min(100% - 32px, 1120px);
+  }
+
+  .header-inner {
+    padding: 10px 16px;
+  }
+
+  .brand {
+    gap: 9px;
+    font-size: 14px;
+  }
+
+  .brand-icon {
+    width: 34px;
+    height: 34px;
+    border-radius: 11px;
+  }
+
+  .hero {
+    padding: 34px 0 58px;
+  }
+
+  .hero h1 {
+    max-width: 520px;
+    font-size: clamp(2.05rem, 10vw, 2.75rem);
+  }
+
+  .hero-subtitle {
+    margin-top: 12px;
+    margin-bottom: 20px;
+    font-size: 14px;
+  }
+
+  .network-pattern,
+  .hero-node {
+    display: none;
+  }
+
+  .upload-card {
+    min-height: 245px;
+    padding: 30px 20px 20px;
+    border-radius: 28px;
+    box-shadow: var(--card-shadow);
+  }
+
+  .upload-empty,
+  .upload-preview {
+    min-height: 145px;
+  }
+
+  .upload-icon {
+    width: 56px;
+    height: 56px;
+  }
+
+  .upload-title {
+    font-size: 20px;
+  }
+
+  .upload-prompt {
+    font-size: 14px;
+  }
+
+  .upload-meta {
+    gap: 2px;
+    font-size: 11px;
+  }
+
+  .upload-meta > span {
+    width: 100%;
+  }
+
+  .upload-meta .meta-dot {
+    display: none;
+  }
+
+  .upload-preview img {
+    width: 120px;
+    height: 120px;
+  }
+
+  .preview-details {
+    flex-wrap: wrap;
+    gap: 5px 12px;
+  }
+
+  #file-name {
+    max-width: 200px;
+  }
+
+  .hero-button {
+    width: 100%;
+  }
+
+  .capabilities {
+    max-width: 390px;
+    gap: 6px 12px;
+    font-size: 10px;
+  }
+
+  .section {
+    padding: 68px 0;
+  }
+
+  .section-heading {
+    margin-bottom: 30px;
+  }
+
+  .section-heading h2,
+  .final-cta h2 {
+    font-size: clamp(1.75rem, 8vw, 2.15rem);
+  }
+
+  .section-heading p {
+    margin-top: 12px;
+    font-size: 14px;
+    line-height: 1.65;
+  }
+
+  .feature-grid {
+    grid-template-columns: 1fr;
+    gap: 14px;
+  }
+
+  .info-card {
+    min-height: auto;
+    padding: 23px;
+    border-radius: 20px;
+  }
+
+  .info-card h3 {
+    margin-top: 16px;
+  }
+
+  .steps {
+    grid-template-columns: 1fr;
+    gap: 42px;
+    max-width: 500px;
+  }
+
+  .step {
+    padding-inline: 6px;
+  }
+
+  .step:not(:last-child)::after {
+    top: 68px;
+    left: calc(50% - 0.5px);
+    width: 1px;
+    height: 29px;
+    background: linear-gradient(180deg, #c7d2fe, #ddd6fe);
+  }
+
+  .section-button {
+    width: 100%;
+    max-width: 320px;
+    margin-top: 38px;
+  }
+
+  .faq-section .section-heading {
+    margin-bottom: 26px;
+  }
+
+  .faq-question {
+    gap: 18px;
+    padding: 18px;
+    font-size: 14px;
+  }
+
+  .faq-answer p {
+    padding: 0 42px 19px 18px;
+    font-size: 13px;
+  }
+
+  .final-cta {
+    padding: 72px 0 76px;
+  }
+
+  .final-cta p {
+    margin-bottom: 24px;
+    font-size: 14px;
+  }
+
+  .final-cta .primary-button {
+    width: 100%;
+    max-width: 320px;
+  }
+
+  .footer-topics {
+    align-items: center;
+    font-size: 12px;
+    line-height: 1.6;
+  }
+}
+
+@media (max-width: 379px) {
+  .brand {
+    font-size: 13px;
+  }
+
+  .hero h1 {
+    font-size: 2rem;
+  }
+
+  .capabilities {
+    gap-inline: 8px;
+    font-size: 9.5px;
+  }
+
+  .footer-topics span:nth-child(even) {
+    display: none;
+  }
+
+  .footer-topics span:nth-child(odd) {
+    width: 100%;
+  }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  html {
+    scroll-behavior: auto;
+  }
+
+  *,
+  *::before,
+  *::after {
+    scroll-behavior: auto !important;
+    animation-duration: 0.01ms !important;
+    animation-iteration-count: 1 !important;
+    transition-duration: 0.01ms !important;
+  }
 }