/* === LUNQHAL Support Center CSS === */
/* Typography matches outdoor confirmed version */

:root {
  --black: #0a0a0a;
  --dark: #1a1a1a;
  --charcoal: #2d2d2d;
  --gray: #6b6b6b;
  --light-gray: #9a9a9a;
  --bg: #fafafa;
  --off-white: #f5f5f5;
  --border: #e5e5e5;
  --accent: #c9a962;
  --accent-dark: #b89852;
  --white: #ffffff;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

/* === Apple Typography System (matches outdoor) === */
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  font-weight: 400;
  font-size: 17px;
  color: var(--dark);
  line-height: 1.47;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.022em;
}
h1, h2, h3, h4 {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
  font-weight: 600;
  letter-spacing: -0.022em;
  color: var(--black);
}
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }

/* === Buttons (unified capsule) === */
.btn {
  display: inline-block; padding: 12px 32px;
  font-size: 16px; font-weight: 600; letter-spacing: -0.01em;
  border: none; cursor: pointer; border-radius: 999px;
  transition: background 0.4s cubic-bezier(0.25,0.46,0.45,0.94),
              color 0.4s cubic-bezier(0.25,0.46,0.45,0.94),
              box-shadow 0.4s cubic-bezier(0.25,0.46,0.45,0.94),
              transform 0.3s ease;
}
.btn-primary {
  background: var(--white); color: var(--accent);
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
.btn-primary:hover {
  background: var(--accent); color: var(--black);
  box-shadow: 0 6px 24px rgba(201,169,98,0.35);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent; color: var(--black); border: 1px solid var(--black);
}
.btn-outline:hover {
  background: var(--black); color: var(--white); transform: translateY(-2px);
}

/* === Section Label === */
.section-label {
  font-size: 16px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--accent); font-weight: 600; margin-bottom: 16px;
}

/* === Support Hero (page hero) === */
.support-hero {
  background: var(--white);
  padding: 140px 40px 80px;
  text-align: center;
}
.support-hero-inner {
  max-width: 800px; margin: 0 auto;
}
.support-hero .support-logo {
  width: 160px; height: 160px; margin: 0 auto 24px;
  display: flex; align-items: center; justify-content: center;
}
.support-hero .support-logo img {
  width: 160px; height: 160px; object-fit: contain;
}
.support-hero .support-title {
  font-size: 64px; font-weight: 700; line-height: 1.08;
  margin-bottom: 16px; color: var(--black);
  letter-spacing: -0.022em;
}
.support-hero .support-subtitle {
  font-size: 24px; color: var(--black); font-weight: 400;
  line-height: 1.1; margin-bottom: 16px;
  letter-spacing: -0.022em;
}
.support-hero p {
  font-size: 19px; color: var(--gray); font-weight: 400;
  line-height: 1.47; max-width: 600px; margin: 0 auto;
}

/* === Sub-page Hero (smaller, left-aligned) === */
.sub-hero {
  background: var(--white);
  padding: 116px 40px 40px;
}
.sub-hero-inner {
  max-width: 780px; margin: 0 auto;
}
.sub-hero-label {
  font-size: 16px; font-weight: 600; color: #c9a962;
  letter-spacing: 0.08em; text-transform: uppercase;
  margin-bottom: 8px;
}
.sub-hero h1 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 600; line-height: 1.1;
  margin-bottom: 8px; color: var(--black);
}
.sub-hero p {
  font-size: 17px; color: var(--gray); font-weight: 400;
  line-height: 1.47; max-width: 640px;
}
/* Centered sub-hero variant (manuals, faq, warranty selection pages) */
.sub-hero-center { text-align: center; }
.sub-hero-center .sub-hero-label { display: block; }
.sub-hero-center h1 { text-align: center; }
.sub-hero-center p { text-align: center; margin-left: auto; margin-right: auto; }

/* Left-aligned sub-hero variant (warranty, faq detail pages) */
.sub-hero-left .sub-hero-inner { text-align: left; max-width: 800px; }
.sub-hero-left h1 { text-align: left; }
.sub-hero-left p { text-align: left; margin-left: 0; margin-right: 0; }

/* FAQ section spacing */
.trouble-section h2 { margin-top: 0; }
.trouble-section h2.faq-section-title { margin-top: 48px; }

/* Inline links inside FAQ answers */
.trouble-answer a { color: var(--accent); font-weight: 600; }

/* === Product Hero (SL016 support page) === */
.product-hero {
  background: var(--white);
  padding: 140px 40px 60px;
  text-align: center;
}
.product-hero-inner {
  max-width: 1280px; margin: 0 auto;
  display: flex; flex-direction: column; align-items: center;
}
.product-hero-image {
  width: 33%; max-width: 420px;
  aspect-ratio: 4/3;
  background: var(--off-white);
  border-radius: 20px; overflow: hidden;
  margin-bottom: 32px;
}
.product-hero-image img {
  width: 100%; height: 100%; object-fit: cover;
}
.product-hero h1 {
  font-size: clamp(3.2rem, 6.4vw, 4rem);
  font-weight: 600; color: var(--black);
  letter-spacing: -0.022em; line-height: 1.1;
}

/* === Product Category Section (support index) === */
.product-section {
  max-width: 1280px; margin: 0 auto;
  padding: 0 40px;
}
.product-section-label {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 600; letter-spacing: -0.022em;
  color: var(--black); margin-bottom: 32px; padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.product-cards {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px; margin-bottom: 64px;
}
.product-card-tile {
  display: block; background: var(--white);
  border: 1px solid var(--border); border-radius: 16px;
  overflow: hidden; transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.product-card-tile:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}
.product-card-tile .card-img {
  width: 100%; aspect-ratio: 4/3;
  background: var(--off-white); overflow: hidden;
}
.product-card-tile .card-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s ease;
}
.product-card-tile:hover .card-img img { transform: scale(1.04); }
.product-card-tile .card-body { padding: 20px 24px; }
.product-card-tile .card-body h3 {
  font-size: 17px; font-weight: 600; color: var(--black);
  margin-bottom: 4px; letter-spacing: -0.022em;
}
.product-card-tile .card-body p {
  font-size: 15px; color: var(--gray); font-weight: 400;
}
.product-card-tile .card-arrow {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 12px; font-weight: 600; color: var(--accent);
  margin-top: 8px;
}

/* === Designing for Longevity section === */
.longevity-section {
  background: var(--off-white);
  padding: 80px 40px;
  text-align: center;
}
.longevity-inner { max-width: 1000px; margin: 0 auto; }
.longevity-section h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600; margin-bottom: 16px; color: var(--black);
}
.longevity-section p {
  font-size: 17px; color: var(--gray); line-height: 1.47; font-weight: 400;
}

/* === SL016 Support Page === */

/* Package Contents */
.package-section {
  max-width: 1280px; margin: 0 auto;
  padding: 80px 40px;
}
.package-section h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600; margin-bottom: 40px; color: var(--black);
}
.package-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.package-item {
  text-align: center;
}
.package-item .pkg-icon {
  width: 100px; height: 100px; margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
}
.package-item .pkg-icon img { width: 90px; height: 90px; }
.package-item p {
  font-size: 15px; color: var(--dark); font-weight: 400; line-height: 1.47;
}

/* Installation Guide */
.install-section {
  max-width: 1280px; margin: 0 auto;
  padding: 0 40px 80px;
}
.install-section h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600; margin-bottom: 8px; color: var(--black);
}
.install-intro {
  position: relative;  /* 修改：新增，作为胶囊标识的定位基准 */
  background: #fef9ef;
  border: 1px solid var(--accent);
  border-radius: 12px;
  padding: 16px 24px;
  margin-top: 24px;
  line-height: 1.47; margin-bottom: 8px;
}
.install-intro .install-title {
  /* 修改：新增，标题行，保持原金色大字号样式 */
  display: block;
  font-size: 32px; color: var(--accent-dark); font-weight: 600;
  margin-bottom: 4px;
}
.install-intro .install-subtitle {
  /* 修改：新增，副标题行，黑色小一号加粗 */
  display: block;
  font-size: 20px; color: var(--black); font-weight: 600;
}
.install-intro .badge {
  /* 修改：新增，✓ TIP胶囊标识 */
  position: absolute;
  top: -24px;
  right: 20px;  /* 修改：从left 20px改为right 20px，移到右上角 */
  background: var(--accent);
  color: var(--white);
  font-size: 24px;  /* 修改：从13px改为24px，胶囊文字加大 */
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 20px;  /* 修改：从5px 16px微调为6px 20px，配合24px字号保持胶囊比例 */
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  z-index: 2;
}
.install-steps { display: flex; flex-direction: column; gap: 0; }
.install-step {
  display: grid; grid-template-columns: 280px 1fr;
  gap: 48px; padding: 40px 0;
  border-bottom: 1px solid var(--border);
}
.install-step:last-child { border-bottom: none; }
.install-step .step-icon {
  width: 240px; height: 160px;
  display: flex; align-items: flex-start; justify-content: flex-start;
}
.install-step .step-icon img { width: 240px; height: 160px; }
.install-step .step-content h3 {
  font-size: 21px; font-weight: 600; color: var(--black);
  margin-bottom: 8px; letter-spacing: -0.022em;
}
.install-step .step-content p {
  font-size: 17px; color: var(--gray); font-weight: 400;
  line-height: 1.47;
}

/* Quick Start */
.quickstart-section {
  background: var(--off-white);
  padding: 80px 40px;
}
.quickstart-inner { max-width: 1280px; margin: 0 auto; }
.quickstart-section h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600; margin-bottom: 8px; color: var(--black);
}
.quickstart-section .section-desc {
  font-size: 17px; color: var(--gray); font-weight: 400;
  line-height: 1.47; margin-bottom: 48px;
}
.quickstart-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.quickstart-card {
  background: var(--white); border-radius: 16px;
  padding: 32px; display: flex; gap: 24px; align-items: flex-start;
}
.quickstart-card .qs-icon {
  flex-shrink: 0; width: 64px; height: 64px;
  color: var(--accent);
}
.quickstart-card .qs-icon img { width: 64px; height: 64px; }
.quickstart-card h3 {
  font-size: 21px; font-weight: 600; color: var(--black);
  margin-bottom: 8px; letter-spacing: -0.022em;
}
.quickstart-card p {
  font-size: 15px; color: var(--gray); font-weight: 400; line-height: 1.47;
}

/* Lighting Modes */
.modes-section {
  max-width: 1280px; margin: 0 auto;
  padding: 80px 40px;
}
.modes-section h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600; margin-bottom: 8px; color: var(--black);
}
.modes-section > .modes-inner > p {
  font-size: 17px; color: var(--gray); font-weight: 400;
  line-height: 1.47; margin-bottom: 40px;
}
.modes-image {
  border-radius: 16px; overflow: hidden;
  margin-bottom: 40px;
}
.modes-image img { width: 100%; }
.modes-cards {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.mode-card {
  background: var(--off-white); border-radius: 16px;
  padding: 32px;
}
.mode-card .mode-header {
  display: flex; align-items: center; gap: 16px; margin-bottom: 16px;
}
.mode-card .mode-number {
  font-size: 32px; font-weight: 600; color: var(--accent);
  margin-bottom: 0; flex-shrink: 0;
}
.mode-card .mode-title {
  font-size: 17px; font-weight: 600; color: var(--black);
}
.mode-card .mode-desc {
  font-size: 15px; color: var(--gray); line-height: 1.47;
}
.mode-card.recommended {
  border: 2px solid #34c759; position: relative;
}
.mode-card.recommended::before {
  content: '\2713 Recommended';
  position: absolute; top: -12px; right: 16px;
  background: #34c759; color: white;
  font-size: 22px; font-weight: 600;
  padding: 4px 12px; border-radius: 999px;
}
.mode-tip {
  background: #fef9ef;
  border: 1px solid var(--accent);
  border-radius: 12px;
  padding: 16px 24px;
  margin-top: 24px;
  font-size: 32px; font-weight: 600;
  color: var(--accent-dark);
  text-align: center;
}

/* Troubleshooting */
.trouble-section {
  background: var(--off-white);
  padding: 80px 40px;
}
.trouble-inner { max-width: 800px; margin: 0 auto; }
.trouble-section h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600; margin-bottom: 8px; color: var(--black);
}
.trouble-section .section-desc {
  font-size: 17px; color: var(--gray); font-weight: 400;
  line-height: 1.47; margin-bottom: 48px;
}
.trouble-item {
  border-bottom: 1px solid var(--border);
}
.trouble-question {
  width: 100%; text-align: left; background: none; border: none;
  padding: 24px 0; cursor: pointer;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
  font-size: 17px; font-weight: 600; color: var(--black);
  display: flex; justify-content: space-between; align-items: center;
  letter-spacing: -0.022em;
}
.trouble-question .chevron {
  flex-shrink: 0; width: 20px; height: 20px;
  transition: transform 0.3s ease;
}
.trouble-item.open .chevron { transform: rotate(180deg); }
.trouble-answer {
  max-height: 0; overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}
.trouble-item.open .trouble-answer {
  max-height: 500px; padding-bottom: 24px;
}
.trouble-answer p {
  font-size: 15px; color: var(--gray); font-weight: 400;
  line-height: 1.47; margin-bottom: 8px;
}
.trouble-answer ul { list-style: none; padding: 0; }
.trouble-answer li {
  font-size: 15px; color: var(--gray); font-weight: 400;
  line-height: 1.47; margin-bottom: 8px;
  padding-left: 20px; position: relative;
}
.trouble-answer li::before {
  content: '•'; position: absolute; left: 4px; color: var(--accent);
}

/* Download & Warranty Cards */
.action-cards {
  max-width: 1280px; margin: 0 auto;
  padding: 60px 0px;
}
.action-cards-grid {
  display: grid; grid-template-columns: repeat(5, 1fr);
  gap:24px;
}
.action-cards-grid.cols-2 {
  grid-template-columns: repeat(2, 1fr);
  max-width: 1280px; margin: 0 auto;
}
.action-cards-grid.cols-3 {
  grid-template-columns: repeat(3, 1fr);
}
.action-card {
  background: var(--off-white); border-radius: 20px;
  padding: 40px; text-align: center;
}
.action-card .ac-icon {
  width: 56px; height: 56px; margin: 0 auto 20px;
  display: flex; align-items: center; justify-content: center;
}
.action-card .ac-icon img { width: 56px; height: 56px; }
.action-card h3 {
  font-size: 21px; font-weight: 600; color: var(--black);
  margin-bottom: 8px; letter-spacing: -0.022em;
}
.action-card p {
  font-size: 15px; color: var(--gray); font-weight: 400;
  line-height: 1.47; margin-bottom: 24px;
}
.action-card .btn { margin-top: 4px; }

/* === Documentation Pages === */

/* Documentation listing (manuas) */
.doc-section {
  max-width: 1280px; margin: 0 auto;
  padding: 0 40px 80px;
}
.doc-product-group { margin-bottom: 64px; }
.doc-product-label {
  font-size: 12px; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--gray);
  margin-bottom: 24px; padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.doc-product-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.doc-product-card {
  display: flex; align-items: center; gap: 16px;
  padding: 20px 24px; background: var(--white);
  border: 1px solid var(--border); border-radius: 16px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.doc-product-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}
.doc-product-card .dpc-img {
  width: 60px; height: 60px; flex-shrink: 0;
  background: var(--off-white); border-radius: 12px; overflow: hidden;
}
.doc-product-card .dpc-img img { width: 100%; height: 100%; object-fit: cover; }
.doc-product-card .dpc-name {
  font-size: 17px; font-weight: 600; color: var(--black);
}

/* Documentation detail page */
.doc-detail {
  max-width: 800px; margin: 0 auto;
  padding: 0 40px 80px; text-align: center;
}
.doc-detail-product-img {
  width: 300px; height: 300px; margin: 0 auto 24px;
  background: var(--off-white); border-radius: 20px; overflow: hidden;
  position: relative;
  border: 2px dashed transparent;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.doc-detail-product-img img { width: 100%; height: 100%; object-fit: cover; }

/* Image action bar (upload / preview / delete) */
.img-action-bar {
  position: absolute;
  bottom: 12px;
  right: 12px;
  display: flex;
  gap: 8px;
  opacity: 0;
  transition: opacity 0.25s ease;
}
.doc-detail-product-img:hover .img-action-bar { opacity: 1; }

/* Touch devices: always show action bar since hover is unreliable */
@media (hover: none) {
  .img-action-bar { opacity: 1; }
}

.img-action-btn {
  width: 38px; height: 38px;
  border: none;
  border-radius: 50%;
  background: rgba(0,0,0,0.55);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
  backdrop-filter: blur(4px);
}
.img-action-btn:hover { transform: scale(1.08); }
.img-action-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}
.img-upload-btn:hover  { background: var(--accent, #c9a961); }
.img-preview-btn:hover { background: #2d6cdf; }
.img-delete-btn:hover  { background: #e53935; }

/* Delete button: hidden by default, shown via .visible class */
.img-delete-btn { display: none; }
.img-delete-btn.visible { display: flex; }

/* Upload lock state: disable hover interactions */
.doc-detail-product-img.uploading { pointer-events: none; }
.doc-detail-product-img.uploading .img-action-bar { opacity: 0.3; }

/* Drag-and-drop hint overlay (hidden by default) */
.drag-drop-hint {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: rgba(255,255,255,0.88);
  border-radius: 20px;
  pointer-events: none;
  z-index: 10;
  text-align: center;
}
.drag-drop-hint svg {
  color: var(--accent, #c9a961);
  animation: dragBounce 1.2s ease-in-out infinite;
}
.drag-drop-hint span {
  font-size: 15px;
  font-weight: 600;
  color: var(--accent, #c9a961);
  letter-spacing: 0.03em;
}

/* Show hint when dragging over the image wrapper */
.doc-detail-product-img.drag-over {
  border-color: var(--accent, #c9a961);
  border-width: 3px;
  background: rgba(201,169,97,0.06);
}
.doc-detail-product-img.drag-over .drag-drop-hint {
  display: flex;
}
.doc-detail-product-img.drag-over .img-action-bar {
  opacity: 0;
}

/* Bounce animation for the drag hint icon */
@keyframes dragBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* Body-level drag-active state: subtle overlay when dragging files anywhere on the page */
body.body-drag-active .doc-detail-product-img {
  box-shadow: 0 0 0 2px rgba(201,169,97,0.3), 0 4px 24px rgba(201,169,97,0.15);
  transition: box-shadow 0.2s ease;
}

/* Image preview modal */
.img-preview-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
}
.img-preview-modal.active { display: flex; }
.img-preview-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.82);
  backdrop-filter: blur(6px);
}
.img-preview-container {
  position: relative;
  z-index: 1;
  max-width: 90vw;
  max-height: 85vh;
}
.img-preview-container img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: 12px;
  object-fit: contain;
  box-shadow: 0 8px 40px rgba(0,0,0,0.4);
}
.img-preview-close {
  position: absolute;
  top: -48px;
  right: -8px;
  width: 40px; height: 40px;
  border: none;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}
.img-preview-close:hover {
  background: rgba(255,255,255,0.3);
  transform: rotate(90deg);
}

/* === Upload Progress Overlay === */
.upload-progress-overlay {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: rgba(0,0,0,0.6);
  border-radius: 20px;
  z-index: 15;
  backdrop-filter: blur(4px);
}
.upload-progress-overlay.active { display: flex; }

.upload-progress-ring {
  position: relative;
  width: 64px; height: 64px;
}
.upload-progress-ring svg {
  transform: rotate(-90deg);
}
.up-ring-bg {
  stroke: rgba(255,255,255,0.15);
}
.up-ring-fg {
  stroke: var(--accent, #c9a961);
  stroke-linecap: round;
  transition: stroke-dashoffset 0.2s ease;
}
.upload-progress-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
}
.upload-progress-label {
  font-size: 13px;
  font-weight: 500;
  color: rgba(255,255,255,0.9);
  letter-spacing: 0.02em;
}

/* === Toast Notification === */
.toast-container {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 500;
  color: #fff;
  box-shadow: 0 4px 24px rgba(0,0,0,0.15);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: auto;
  white-space: nowrap;
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}
.toast-success { background: #2e7d32; }
.toast-error   { background: #c62828; }
.toast-info    { background: #333; }

/* === Delete Confirmation Modal === */
.confirm-modal {
  position: fixed;
  inset: 0;
  z-index: 10001;
  display: none;
  align-items: center;
  justify-content: center;
}
.confirm-modal.active { display: flex; }
.confirm-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
}
.confirm-dialog {
  position: relative;
  z-index: 1;
  width: 360px;
  max-width: 90vw;
  padding: 32px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.2);
  text-align: center;
  animation: confirmPop 0.25s ease;
}
@keyframes confirmPop {
  from { opacity: 0; transform: scale(0.92) translateY(10px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
.confirm-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--black, #1a1a1a);
  margin-bottom: 8px;
}
.confirm-message {
  font-size: 15px;
  color: var(--gray, #888);
  margin-bottom: 24px;
  line-height: 1.5;
}
.confirm-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
}
.confirm-btn {
  padding: 10px 28px;
  border: none;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
}
.confirm-btn:hover { transform: scale(1.03); }
.confirm-cancel {
  background: #f0f0f0;
  color: #333;
}
.confirm-cancel:hover { background: #e0e0e0; }
.confirm-ok {
  background: #e53935;
  color: #fff;
}
.confirm-ok:hover { background: #c62828; }

/* === Small Mobile (600px) === */
@media (max-width: 600px) {
  .doc-detail-product-img { width: 240px; height: 240px; }
  .img-preview-close { top: -44px; right: 0; }
  .confirm-dialog { padding: 24px; }
  .confirm-title { font-size: 18px; }
  .toast { font-size: 13px; padding: 10px 16px; }
  .toast-container { bottom: 16px; left: 16px; right: 16px; transform: none; }
  .toast-container .toast { white-space: normal; }

  /* Small mobile typography */
  .support-hero h1 { font-size: 1.75rem; }
  .support-hero .support-title { font-size: 2rem; }
  .support-hero .support-subtitle { font-size: 16px; }
  .support-hero p { font-size: 14px; }
  .sub-hero h1 { font-size: 1.5rem; }
  .sub-hero p { font-size: 14px; }
  .sub-hero-label { font-size: 13px; }
  .product-hero h1 { font-size: 1.5rem; }
  .product-section h2,
  .package-section h2,
  .install-section h2,
  .quickstart-section h2,
  .modes-section h2,
  .trouble-section h2,
  .longevity-section h2,
  .action-cards h2,
  .doc-section h2,
  .warranty-section h2,
  .process-section h2,
  .cta-section h2 { font-size: 1.35rem; }
  .section-desc { font-size: 14px; }
  .doc-product-label { font-size: 11px; }
  .doc-detail h2 { font-size: 20px; }
  .doc-detail .doc-year { font-size: 14px; }
  .warranty-limitations h3 { font-size: 14px; }
  .page-hero h1 { font-size: 1.75rem; }
  .page-hero p { font-size: 14px; }
  .page-content h2 { font-size: 18px; }
  .page-content p,
  .page-content li { font-size: 15px; }
  .contact-card h2 { font-size: 20px; }
  .process-number { font-size: 36px; }
  .process-card h3 { font-size: 17px; }
  .mode-card { padding: 24px; }
  .mode-card .mode-number { font-size: 24px; }
  .mode-card .mode-title { font-size: 15px; }
  .mode-card .mode-desc { font-size: 13px; }
  .mode-card.recommended::before { font-size: 18px; padding: 2px 8px; top: -8px; right: 8px; }
  .mode-tip { padding: 10px 16px; font-size: 26px; }

  /* Smaller padding */
  .support-hero { padding: 80px 16px 40px; }
  .support-hero { padding: calc(80px + env(safe-area-inset-top, 0px)) 16px 40px; }  /* 修改：新增，iPhone刘海屏顶部叠加安全区，防导航增高遮挡 */
  .sub-hero { padding: 60px 16px 28px; }
  .sub-hero { padding: calc(60px + env(safe-area-inset-top, 0px)) 16px 28px; }  /* 修改：新增，同上 */
  .product-section { padding: 0 16px; }
  .package-section { padding: 40px 16px; }
  .install-section { padding: 0 16px 40px; }
  .quickstart-section { padding: 40px 16px; }
  .modes-section { padding: 40px 16px; }
  .trouble-section { padding: 40px 16px; }
  .longevity-section { padding: 40px 16px; }
  .action-cards { padding: 40px 16px; }
  .doc-section { padding: 0 16px 40px; }
  .doc-detail { padding: 0 16px 40px; }
  .warranty-section { padding: 0 16px 40px; }
  .product-hero { padding: 80px 16px 32px; }
  .product-hero { padding: calc(80px + env(safe-area-inset-top, 0px)) 16px 32px; }  /* 修改：新增，iPhone刘海屏顶部叠加安全区 */
  .page-hero { padding: 60px 16px 32px; }
  .page-hero { padding: calc(60px + env(safe-area-inset-top, 0px)) 16px 32px; }  /* 修改：新增，同上 */
  .page-content { padding: 0 16px 48px; }
  .process-section { padding: 40px 16px; }
  .cta-section { padding: 48px 16px; }

  /* Support strip: 2 columns on very small screens */
  .support-inner { grid-template-columns: repeat(2, 1fr); }
}

/* === Reduced motion === */
@media (prefers-reduced-motion: reduce) {
  .drag-drop-hint svg { animation: none; }
  .confirm-dialog { animation: none; }
  .img-action-btn,
  .img-preview-close,
  .toast,
  .confirm-btn { transition: none; }
  .up-ring-fg { transition: none; }
}

.doc-detail h2 {
  font-size: 24px; font-weight: 600; color: var(--black); margin-bottom: 4px;
}
.doc-detail .doc-year {
  font-size: 15px; color: var(--gray); font-weight: 400; margin-bottom: 16px;
}
.doc-detail .doc-spec-link {
  font-size: 15px; color: var(--accent); font-weight: 600; margin-bottom: 48px;
  display: inline-block;
}
.doc-detail .doc-section-label {
  font-size: 12px; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--gray); margin-bottom: 16px;
}
.doc-download-card {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 16px 32px; background: var(--off-white);
  border-radius: 999px; font-size: 15px; font-weight: 600;
  color: var(--accent); transition: all 0.3s ease;
}
.doc-download-card:hover {
  background: var(--accent); color: var(--black);
}
.doc-download-card img { width: 20px; height: 20px; }

/* === Warranty Page === */
.warranty-section {
  max-width: 800px; margin: 0 auto;
  padding: 0 40px 80px;
}
.warranty-block {
  margin-bottom: 64px;
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 32px;
  align-items: flex-start;
}
.warranty-block .wb-left {
  display: flex; align-items: flex-start; justify-content: flex-start;
  padding-top: 4px;
}
.warranty-block .wb-left .wb-left-icon {
  width: 120px; height: 120px; flex-shrink: 0;
}
.warranty-block .wb-left .wb-left-icon img { width: 120px; height: 120px; }
.warranty-block .wb-right h2 {
  font-size: 21px; font-weight: 600; color: var(--black);
  margin-bottom: 24px; letter-spacing: -0.022em;
}
.warranty-block .wb-right ul { list-style: none; padding: 0; }
.warranty-block .wb-right li {
  font-size: 17px; color: var(--dark); font-weight: 400;
  line-height: 1.47; margin-bottom: 12px;
  padding-left: 24px; position: relative;
}
.warranty-block .wb-right li::before {
  content: '•'; position: absolute; left: 4px; color: var(--accent);
}
.warranty-block.warning .wb-right h2 { color: var(--black); }
.warranty-block .wb-card {
  background: var(--off-white); border-radius: 16px;
  padding: 32px; text-align: center; margin-top: 0;
}
.warranty-block .wb-card .wb-icon-large {
  width: 56px; height: 56px; margin: 0 auto 16px;
}
.warranty-block .wb-card .wb-icon-large img { width: 56px; height: 56px; }
.warranty-block .wb-card h3 {
  font-size: 21px; font-weight: 600; margin-bottom: 8px;
}
.warranty-block .wb-card p {
  font-size: 15px; color: var(--gray); font-weight: 400; line-height: 1.47;
  margin-bottom: 24px;
}
/* Full-width blocks (no icon, e.g. CARE & WARRANTY LIMITATIONS) */
.warranty-block.wb-full {
  grid-template-columns: 1fr;
}
.warranty-block.wb-full h2 {
  font-size: 21px; font-weight: 600; color: var(--black);
  margin-bottom: 24px; letter-spacing: -0.022em;
}
.warranty-limitations {
  background: var(--off-white); border-radius: 16px;
  padding: 32px;
}
.warranty-limitations h3 {
  font-size: 17px; font-weight: 600; color: var(--black);
  margin-bottom: 16px;
}
.warranty-limitations li { color: var(--gray); }
.warranty-limitations li::before { color: #e53935; }

/* === Support Strip === */
.support-strip {
  background: var(--off-white); padding: 10px 40px;
  border-top: 1px solid var(--border);
}
.support-inner {
  max-width: 1280px; margin: 0 auto;
  display: flex; justify-content: center; gap: 100px; flex-wrap: wrap;
}
.support-link {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; letter-spacing: -0.01em; color: var(--gray);
  transition: color 0.3s; font-weight: 400;
}
.support-link:hover { color: var(--black); }

/* === NEED HELP spacing === */
.warranty-block .wb-right .btn { margin-top: 32px; }

/* === Doc product label (bigger, matching outdoor section titles) === */
.doc-product-label {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 600; letter-spacing: -0.022em;
  color: var(--black);
  margin-bottom: 32px; padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
  text-transform: none;
}

/* === Contact Page === */
.page-hero {
  max-width: 1280px; margin: 0 auto;
  padding: 120px 40px 60px; text-align: center;
}
.page-hero .section-label { text-align: center; margin-bottom: 16px; }
.page-hero h1 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 600; margin-bottom: 16px; color: var(--black);
}
.page-hero p {
  font-size: 17px; color: var(--gray); max-width: 600px;
  margin: 0 auto; font-weight: 400; line-height: 1.47;
}

.page-content {
  max-width: 860px; margin: 0 auto;
  padding: 0 40px 80px;
}
.page-content h2 {
  font-size: 21px; font-weight: 600; margin: 48px 0 16px;
  letter-spacing: -0.022em; color: var(--black);
}
.page-content p, .page-content li {
  font-size: 17px; color: var(--dark); line-height: 1.47;
  margin-bottom: 16px; font-weight: 400;
}
.page-content ul { padding-left: 20px; }
.page-content li { margin-bottom: 8px; }

.contact-card {
  max-width: 600px; margin: 40px auto; text-align: center;
  padding: 60px 40px; background: var(--off-white); border-radius: 16px;
}
.contact-card h2 {
  font-size: 24px; margin-bottom: 12px; color: var(--black);
}
.contact-card p { font-size: 17px; color: var(--gray); }
.email-link {
  display: inline-block; font-size: 17px; color: var(--accent);
  font-weight: 600; margin-top: 20px; padding: 16px 40px;
  border-radius: 999px; background: var(--white);
  transition: all 0.3s ease; box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
.email-link:hover {
  background: var(--accent); color: var(--black);
  box-shadow: 0 6px 24px rgba(201,169,98,0.35); transform: translateY(-2px);
}

/* Process Section (Contact page) */
.process-section {
  max-width: 1280px; margin: 0 auto;
  padding: 80px 40px; text-align: center;
}
.process-section .section-label { text-align: center; margin-bottom: 16px; }
.process-section h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600; margin-bottom: 8px; color: var(--black);
}
.process-section .section-desc {
  font-size: 17px; color: var(--gray); max-width: 560px;
  margin: 0 auto 48px; font-weight: 400; line-height: 1.47;
}
.process-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.process-card {
  background: var(--off-white); border-radius: 16px;
  padding: 32px; text-align: center;
}
.process-card .process-number {
  font-size: 48px; font-weight: 600; color: var(--accent);
  margin-bottom: 16px; line-height: 1;
}
.process-card h3 {
  font-size: 21px; font-weight: 600; color: var(--black);
  margin-bottom: 8px; letter-spacing: -0.022em;
}
.process-card p {
  font-size: 15px; color: var(--gray); font-weight: 400; line-height: 1.47;
}

/* CTA Section */
.cta-section {
  background: var(--off-white); text-align: center; padding: 80px 40px;
}
.cta-section h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600; color: var(--black); margin-bottom: 16px;
}
.cta-section p {
  font-size: 17px; color: var(--gray); margin-bottom: 32px;
  max-width: 480px; margin-left: auto; margin-right: auto;
  font-weight: 400; line-height: 1.47;
}

/* === Responsive === */
@media (max-width: 1024px) {
  .product-cards { grid-template-columns: repeat(2, 1fr); }
  .package-grid { grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .modes-cards { grid-template-columns: repeat(2, 1fr); }
  .quickstart-grid { grid-template-columns: 1fr; }
  .action-cards-grid { grid-template-columns: repeat(3, 1fr); }
  .action-cards-grid.cols-2 { grid-template-columns: repeat(2, 1fr); max-width: 1000px; margin: 0 auto; }
  .doc-product-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  /* Tablet typography */
  .support-hero h1 { font-size: 2.25rem; }
  .support-hero .support-title { font-size: 48px; }
  .support-hero .support-subtitle { font-size: 20px; }
  .sub-hero h1 { font-size: 2rem; }
  .product-hero h1 { font-size: 2rem; }
  .product-section h2,
  .package-section h2,
  .install-section h2,
  .quickstart-section h2,
  .modes-section h2,
  .trouble-section h2,
  .longevity-section h2,
  .action-cards h2,
  .doc-section h2,
  .warranty-section h2,
  .process-section h2,
  .cta-section h2 { font-size: 1.75rem; }
}

@media (max-width: 768px) {
  /* Hamburger → X animation when active */
  .support-hero { padding: 100px 20px 48px; }
  .support-hero { padding: calc(100px + env(safe-area-inset-top, 0px)) 20px 48px; }  /* 修改：新增，iPhone刘海屏顶部叠加安全区 */
  .sub-hero { padding: 80px 20px 32px; }
  .sub-hero { padding: calc(80px + env(safe-area-inset-top, 0px)) 20px 32px; }  /* 修改：新增，同上 */
  .product-section { padding: 0 20px; }
  .product-cards { grid-template-columns: 1fr; }
  .package-section { padding: 48px 20px; }
  .package-grid { grid-template-columns: 1fr; gap: 32px; }
  .install-section { padding: 0 20px 48px; }
  .install-step { grid-template-columns: 1fr; gap: 16px; }
  .install-step .step-icon { width: 180px; height: 120px; }
  .install-step .step-icon img { width: 180px; height: 120px; }
  .quickstart-section { padding: 48px 20px; }
  .quickstart-grid { grid-template-columns: 1fr; }
  .modes-section { padding: 48px 20px; }
  .modes-cards { grid-template-columns: 1fr; }
  .trouble-section { padding: 48px 20px; }
  .action-cards { padding: 48px 20px; }
  .action-cards-grid { grid-template-columns: 1fr; }
  .action-cards-grid.cols-2 { grid-template-columns: 1fr; max-width: none; }
  .action-cards-grid.cols-3 { grid-template-columns: 1fr; }
  .doc-section { padding: 0 20px 48px; }
  .doc-product-grid { grid-template-columns: 1fr; }
  .doc-detail { padding: 0 20px 48px; }
  .warranty-section { padding: 0 20px 48px; }
  .warranty-block { grid-template-columns: 1fr; gap: 16px; }
  .warranty-block .wb-left { padding-top: 0; }
  .product-hero { padding: 100px 20px 40px; }
  .product-hero { padding: calc(100px + env(safe-area-inset-top, 0px)) 20px 40px; }  /* 修改：新增，iPhone刘海屏顶部叠加安全区 */
  .product-hero-image { width: 60%; max-width: 300px; }
  .longevity-section { padding: 48px 20px; }
  .page-hero { padding: 80px 20px 40px; }
  .page-hero { padding: calc(80px + env(safe-area-inset-top, 0px)) 20px 40px; }  /* 修改：新增，同上 */
  .page-content { padding: 0 20px 60px; }
  .contact-card { padding: 40px 24px; margin: 24px auto; }
  .process-section { padding: 48px 20px; }
  .process-grid { grid-template-columns: 1fr; }
  .cta-section { padding: 60px 20px; }

  .support-strip { padding: 20px 25px; }
  .support-inner {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 30px 22px;
  }
  .support-link { font-size: 12px; flex-direction: column; gap: 8px; text-align: center; }
  .support-link img { width: 18px; height: 18px; }

  /* Typography scaling */
  .support-hero h1 { font-size: 2rem; }
  .support-hero .support-title { font-size: 2.5rem; }
  .support-hero .support-subtitle { font-size: 18px; }
  .support-hero .support-logo { width: 120px; height: 120px; }
  .support-hero .support-logo img { width: 120px; height: 120px; }
  .support-hero p { font-size: 15px; }
  .sub-hero h1 { font-size: 1.75rem; }
  .sub-hero p { font-size: 15px; }
  .product-hero h1 { font-size: 1.75rem; }
  .product-section h2,
  .package-section h2,
  .install-section h2,
  .quickstart-section h2,
  .modes-section h2,
  .trouble-section h2,
  .longevity-section h2,
  .action-cards h2,
  .doc-section h2,
  .warranty-section h2,
  .process-section h2,
  .cta-section h2 { font-size: 1.5rem; }
  .section-desc { font-size: 15px; }
  .trouble-question { font-size: 15px; padding: 16px 20px; }
  /* 修改：折叠时垂直padding为0，避免未展开时残留空白条；展开时恢复垂直padding */
  .trouble-answer { padding: 0 20px 0; }
  .trouble-item.open .trouble-answer { padding: 0 20px 16px; }
  .trouble-answer p,
  .trouble-answer li { font-size: 15px; }
  .warranty-block h2 { font-size: 17px; }
  .warranty-block p,
  .warranty-block li { font-size: 15px; }
  .wb-left-icon { width: 56px; height: 56px; }
  .wb-left-icon img { width: 56px; height: 56px; }
  .warranty-limitations h3 { font-size: 15px; }

  /* Buttons full-width on mobile */
  .btn { width: 100%; justify-content: center; }
  .doc-download-card { width: 100%; justify-content: center; }
  .email-link { width: 100%; justify-content: center; }

  /* Product page specific */
  .install-step h3 { font-size: 17px; }
  .install-step p { font-size: 15px; }
  .package-item p { font-size: 13px; }
  .pkg-icon { width: 64px; height: 64px; }
  .pkg-icon img { width: 64px; height: 64px; }
  .quickstart-card h3 { font-size: 17px; }
  .quickstart-card p { font-size: 14px; }
  .mode-card h3 { font-size: 17px; }
  .mode-card p { font-size: 14px; }
  .mode-card .mode-number { font-size: 28px; }
  .mode-card.recommended::before { font-size: 20px; padding: 3px 10px; top: -10px; right: 12px; }
  .mode-tip { padding: 12px 20px; font-size: 28px; }
  .longevity-text p { font-size: 15px; }
  .action-card h3 { font-size: 17px; }
  .action-card p { font-size: 14px; }

  /* Product cards mobile */
  .product-card-tile .card-body { padding: 16px 20px; }
  .product-card-tile .card-body h3 { font-size: 17px; }
  .product-card-tile .card-body p { font-size: 13px; }
  .doc-product-card { padding: 16px 20px; gap: 12px; }
  .doc-product-card .dpc-img { width: 48px; height: 48px; }
  .doc-product-card .dpc-name { font-size: 15px; }
}

/* === Ultra-small screens (≤375px: iPhone SE, Galaxy Fold) === */
@media (max-width: 375px) {
  .support-hero { padding: 64px 12px 32px; }
  .support-hero { padding: calc(64px + env(safe-area-inset-top, 0px)) 12px 32px; }  /* 修改：新增，iPhone刘海屏顶部叠加安全区 */
  .sub-hero { padding: 48px 12px 24px; }
  .sub-hero { padding: calc(48px + env(safe-area-inset-top, 0px)) 12px 24px; }  /* 修改：新增，同上 */
  .product-hero { padding: 64px 12px 28px; }
  .product-hero { padding: calc(64px + env(safe-area-inset-top, 0px)) 12px 28px; }  /* 修改：新增，同上 */
  .product-hero-image { width: 75%; max-width: 240px; }
  .page-hero { padding: 48px 12px 28px; }
  .page-hero { padding: calc(48px + env(safe-area-inset-top, 0px)) 12px 28px; }  /* 修改：新增，同上 */

  .product-section,
  .install-section,
  .doc-section,
  .doc-detail,
  .warranty-section { padding-left: 12px; padding-right: 12px; }
  .package-section,
  .quickstart-section,
  .modes-section,
  .trouble-section,
  .longevity-section,
  .action-cards,
  .process-section,
  .cta-section { padding-left: 12px; padding-right: 12px; }
  .page-content { padding: 0 12px 40px; }

  .support-hero h1 { font-size: 1.5rem; }
  .support-hero .support-title { font-size: 1.75rem; }
  .support-hero .support-subtitle { font-size: 14px; }
  .support-hero .support-logo { width: 100px; height: 100px; margin-bottom: 16px; }
  .support-hero .support-logo img { width: 100px; height: 100px; }
  .sub-hero h1 { font-size: 1.35rem; }
  .sub-hero-label { font-size: 11px; }
  .product-hero h1 { font-size: 1.35rem; }
  .page-hero h1 { font-size: 1.5rem; }
  .support-hero p,
  .sub-hero p { font-size: 13px; }
  .page-hero p { font-size: 13px; }

  .product-section h2,
  .package-section h2,
  .install-section h2,
  .quickstart-section h2,
  .modes-section h2,
  .trouble-section h2,
  .longevity-section h2,
  .action-cards h2,
  .doc-section h2,
  .warranty-section h2,
  .process-section h2,
  .cta-section h2 { font-size: 1.2rem; }
  .page-content h2 { font-size: 16px; }
  .contact-card h2 { font-size: 18px; }
  .doc-detail h2 { font-size: 18px; }
  .section-desc { font-size: 13px; }

  .trouble-question { font-size: 14px; padding: 14px 16px; }
  /* 修改：折叠时垂直padding为0（同768px断点修复），避免未展开残留空白条 */
  .trouble-answer { padding: 0 16px 0; }
  .trouble-item.open .trouble-answer { padding: 0 16px 14px; }
  .trouble-answer p,
  .trouble-answer li { font-size: 14px; }

  .warranty-block h2 { font-size: 15px; }
  .warranty-block p,
  .warranty-block li { font-size: 14px; }
  .wb-left-icon { width: 44px; height: 44px; }
  .wb-left-icon img { width: 44px; height: 44px; }

  .package-item p { font-size: 12px; }
  .pkg-icon { width: 52px; height: 52px; }
  .pkg-icon img { width: 52px; height: 52px; }

  .install-step .step-icon { width: 140px; height: 100px; }
  .install-step .step-icon img { width: 140px; height: 100px; }
  .install-step h3 { font-size: 15px; }
  .install-step p { font-size: 14px; }

  .quickstart-card h3 { font-size: 15px; }
  .quickstart-card p { font-size: 13px; }
  .mode-card h3 { font-size: 15px; }
  .mode-card p { font-size: 13px; }
  .mode-card { padding: 20px; }
  .mode-card .mode-number { font-size: 22px; }
  .mode-card .mode-title { font-size: 14px; }
  .mode-card .mode-desc { font-size: 12px; }
  .mode-card.recommended::before { font-size: 16px; padding: 2px 6px; top: -7px; right: 6px; }
  .mode-tip { padding: 8px 12px; font-size: 24px; }
  .action-card h3 { font-size: 15px; }
  .action-card p { font-size: 13px; }

  .contact-card { padding: 32px 16px; margin: 16px auto; }
  .email-link { font-size: 15px; padding: 14px 28px; }
  .process-number { font-size: 28px; }
  .process-card { padding: 24px 16px; }
  .process-card h3 { font-size: 15px; }
  .process-card p { font-size: 13px; }

  .doc-detail-product-img { width: 200px; height: 200px; }
  .doc-product-card { padding: 12px 16px; gap: 10px; }
  .doc-product-card .dpc-img { width: 40px; height: 40px; }
  .doc-product-card .dpc-name { font-size: 14px; }
  .doc-download-card { padding: 14px 24px; font-size: 14px; }

  .support-strip { padding: 15px 15px; }
  .support-link { font-size: 11px; gap: 8px; }
  .support-link img { width: 16px; height: 16px; }

  .confirm-dialog { padding: 20px 16px; }
  .confirm-title { font-size: 16px; }
  .confirm-text { font-size: 14px; }
  .confirm-btn { padding: 10px 20px; font-size: 14px; }

  .toast { font-size: 12px; padding: 8px 14px; }
}

/* === Print styles (warranty, FAQ, documents) === */
@media print {
  .img-action-bar, .img-upload-btn, #uploadBtn, #previewBtn, #deleteBtn,
  #imgInput, .drag-drop-hint, .toast-container,
  .confirm-modal, .img-preview-modal, .up-ring-overlay {
    display: none !important;
  }
  body { color: #000; background: #fff; }
  .sub-hero, .page-hero, .product-hero { padding: 20px 0; }
  .sub-hero-label, .section-label { color: #000; }
  .sub-hero h1, .page-hero h1, .product-hero h1 { font-size: 1.5rem; color: #000; }
  .trouble-section, .warranty-section, .doc-detail,
  .page-content, .package-section, .install-section,
  .quickstart-section, .modes-section, .longevity-section {
    padding: 16px 0; max-width: 100%;
  }
  .trouble-answer { display: block !important; padding: 0 0 16px; }
  .trouble-question { pointer-events: none; }
  .trouble-question .chevron { display: none; }
  .warranty-block { page-break-inside: avoid; border: 1px solid #ccc; }
  .contact-card, .process-card, .action-card,
  .quickstart-card, .mode-card, .package-item {
    page-break-inside: avoid;
  }
  a { color: #000; text-decoration: underline; }
  img { max-width: 200px; }
  .doc-detail-product-img { width: 200px; height: 200px; }
}