.phone-product-detail-body { background: #eef2f6; }
.phone-product-detail-body .phone-home-header { background: rgba(255, 255, 255, .9); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
.phone-product-detail { width: min(100%, var(--phone-content-width)); margin: 0 auto; overflow: hidden; color: #14223a; background: #f1f4f7; }
.phone-product-detail *, .phone-product-detail *::before, .phone-product-detail *::after { box-sizing: border-box; }
.phone-product-section { width: 100%; min-width: 0; padding: clamp(16px, 3.4vw, 29px) 0; }
.phone-product-section-inner { width: 100%; max-width: 750px; margin: 0 auto; padding-inline: 16px; }
.phone-product-section h2 { max-width: 640px; margin: 0 auto clamp(24px, 6vw, 46px); color: #14223a; font-size: clamp(27px, 6vw, 45px); font-weight: 500; line-height: 1.25; letter-spacing: -.035em; text-align: center; }
.phone-product-section h3 { margin: 0; color: #173154; font-size: clamp(19px, 4.267vw, 30px); line-height: 1.35; }
.phone-product-section p, .phone-product-section li { font-size: clamp(14px, 3.6vw, 24px); line-height: 1.5; }
.phone-product-track { display: flex; width: 100%; min-width: 0; gap: 10px; overflow-x: auto; overflow-y: hidden;  scroll-behavior: smooth; scroll-snap-type: x mandatory; scrollbar-width: none; touch-action: auto; overscroll-behavior-inline: contain; }
.phone-product-track::-webkit-scrollbar { display: none; }
.phone-product-track > * { flex: 0 0 auto; scroll-snap-align: start; }

.phone-product-hero { position: relative; min-height: clamp(460px, 112vw, 640px); padding: clamp(98px, 30vw, 134px) 0 clamp(40px, 9vw, 70px); isolation: isolate; overflow: hidden; color: #fff; background-color: #183952; }
.phone-product-hero-background { position: absolute; z-index: -2; inset: 0; width: 100%; height: 100%; object-fit: cover; pointer-events: none; }
.phone-product-hero-shade { position: absolute; z-index: -1; inset: 0; background: linear-gradient(185deg, rgba(29, 34, 51, 0.30) 3.89%, rgba(29, 34, 51, 0.10) 96.11%);
 }
.phone-product-hero-content { text-align: center; }
.phone-product-hero h1 { margin: 0; color: #fff; font-size: clamp(28px, 7.692vw, 40px); font-weight: 400; line-height: 1.2; letter-spacing: 0; }
.phone-product-hero-name { display: block; font-weight: 700; }
.phone-product-hero-slogan { display: block; }
.phone-product-hero-subtitle { margin: 10px 0 0; color: #fff; font-size: clamp(16px, 4.103vw, 20px); line-height: 1.5; }
.phone-product-hero-description { max-width: 610px; margin: 16px auto 0; color: #fff; font-size: clamp(12px, 3.3vw, 16px); line-height: 1.6; }
.phone-product-hero-highlights { display: grid; max-width: 650px; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; margin: 24px auto 0; }
.phone-product-hero-highlights article { display: flex; min-width: 0; flex-direction: column; gap: 4px; padding: 10px 8px; border: 1px solid rgba(255, 255, 255, .22); border-radius: 8px; background: rgba(13, 47, 76, .24); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.phone-product-hero-highlights strong { color: #fff; font-size: clamp(13px, 3.333vw, 16px); font-weight: 500; line-height: 1.4; }
.phone-product-hero-highlights span { color: rgba(255, 255, 255, .78); font-size: clamp(12px, 3.077vw, 14px); line-height: 1.45; }
.phone-product-hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: clamp(12px, 4.103vw, 16px); margin-top: clamp(28px, 7vw, 48px); }
.phone-product-hero-actions a { display: inline-flex; align-items: center; justify-content: center; padding: 14px; border-radius: 8px; background: rgba(255, 255, 255, .8); color: #0068eb; font-size: 14px; line-height: 17px; text-align: center; text-decoration: none; }
.phone-product-hero-action-primary { min-width: 168px; }
.phone-product-hero-action-secondary { flex: 0 0 auto; }
.phone-product-tag-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 0; margin-top: 24px; color: rgba(255, 255, 255, .85); font-size: clamp(12px, 3.077vw, 14px); line-height: 1.17; }
.phone-product-tag-row span { position: relative; }
.phone-product-tag-row span:not(:last-child)::after { margin: 0 8px; color: rgba(255, 255, 255, .5); content: "|"; }

.phone-product-intro, .phone-product-architecture, .phone-product-cases { background: #f5f6f7; }
.phone-product-intro-card { display: flex; width: 100%; flex-direction: column; align-items: center; row-gap: 24px; padding: 24px 0; border-radius: 12px; background: #fff; }
.phone-product-intro-head { display: flex; flex-direction: column; align-items: center; row-gap: 8px; margin: 0 16px; text-align: center; }
.phone-product-intro-head h2 { margin: 0; color: #1d2233; font-size: clamp(24px, 6vw, 30px); line-height: 1.5; }
.phone-product-intro-card .phone-product-lead { max-width: 326px; margin: 0; color: rgba(29, 34, 51, .6); font-size: clamp(14px, 3.59vw, 16px); line-height: 1.43; text-align: left; }
.phone-product-intro-card .phone-product-lead p { margin: 0; }
.phone-product-intro-card .phone-product-track { width: 100%; padding: 0 0 0 16px; }
.phone-product-local-service { display: inline-flex; align-items: center; justify-content: center; column-gap: 2px; width: 204px; max-width: calc(100% - 32px); padding: 10px 16px; border-radius: 6px; background: rgba(13, 153, 255, .1); color: #0068eb; font-size: 14px; line-height: 17px; text-align: center; text-decoration: none; }
.phone-product-local-service svg { width: 16px; height: 16px; flex-shrink: 0; }
.phone-product-scenario-card { width: clamp(240px, 69.744vw, 272px); flex: 0 0 clamp(240px, 69.744vw, 272px); overflow: hidden; border-radius: 6px; background: #f5f6f7; }
.phone-product-scenario-card > img { display: block; width: 100%; aspect-ratio: 272 / 204; object-fit: cover; border-radius: 6px 6px 0 0; }
.phone-product-scenario-card > div { display: flex; flex-direction: column; gap: 8px; padding: 16px; }
.phone-product-scenario-card h3 { margin: 0; color: #1d2233; font-size: 16px; font-weight: 500; line-height: 1.5; }
.phone-product-scenario-card p { display: flex; flex-direction: column; gap: 2px; margin: 0; }
.phone-product-scenario-card p strong { color: #0068eb; font-size: 12px; font-weight: 400; line-height: 18px; }
.phone-product-scenario-card p strong::after { content: "："; }
.phone-product-scenario-card p span { color: rgba(29, 34, 51, .6); font-size: 14px; line-height: 1.6; }
.phone-product-scenario-card .phone-product-scenario-copy { color: rgba(29, 34, 51, .6); font-size: 14px; line-height: 1.6; }

.phone-product-scenario-track { padding-left: 16px; padding-right: 16px; }

.phone-product-scenario-dots { display: flex; justify-content: center; gap: 8px; }
.phone-product-scenario-dots button { width: 8px; height: 4px; padding: 0; border: 0; border-radius: 4px; background: rgba(29, 34, 51, .2); cursor: pointer; transition: all .3s; }
.phone-product-scenario-dots button.is-active { width: 16px; background: rgba(29, 34, 51, .4); }

.phone-product-deployment { background: linear-gradient(180deg, #f5f8fb, #eaf2f9); }
.phone-product-deployment-card { display: flex; width: 100%; flex-direction: column; align-items: center; row-gap: 24px; padding: 24px 12px; border-radius: 16px; background: #fff; }
.phone-product-deployment-card > h2 { margin: 0; color: #1d2233; font-size: clamp(24px, 6vw, 30px); line-height: 1.5; text-align: center; }
.phone-product-deployment-list { display: flex; width: 100%; flex-direction: column; row-gap: 16px; }
.phone-product-deployment-item { padding: 16px 16px 24px; border-radius: 6px; background: #09ddff1a; }
.phone-product-deployment-item h3 { margin: 0; color: #1d2233; font-size: 16px; font-weight: 500; line-height: 2; }
.phone-product-deployment-item p { margin: 0; }
.phone-product-deployment-audience { margin-top: 8px; }
.phone-product-deployment-audience strong,
.phone-product-deployment-features > strong { display: block; color: #0068eb; font-size: 12px; font-weight: 400; line-height: 16px; }
.phone-product-deployment-audience strong::after,
.phone-product-deployment-features > strong::after { content: "："; }
.phone-product-deployment-audience span { display: block; margin-top: 4px; color: rgba(29, 34, 51, .6); font-size: 14px; line-height: 1.6; }
.phone-product-deployment-features { margin-top: 12px; }
.phone-product-deployment-features > div { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 12px; margin-top: 4px; }
.phone-product-deployment-features > div p { color: rgba(29, 34, 51, .6); font-size: 13px; line-height: 1.6; }

.phone-product-modules { background: linear-gradient(180deg, #eaf2f9, #f5f6f7); }
.phone-product-modules-card { display: flex; width: 100%; min-width: 0; flex-direction: column; align-items: flex-start; row-gap: 16px; padding: 24px 16px; border-radius: 12px; background: #fff; overflow: hidden; }
.phone-product-modules-card > h2 { max-width: none; margin: 0 auto; font-size: clamp(24px, 6vw, 30px); text-align: center; line-height: 1.5; }
.phone-product-module-tabs::-webkit-scrollbar { display: none; }
.phone-product-module-tabs { display: flex; width: 100%; min-width: 0; max-width: 100%; gap: 10px; overflow-x: auto; padding: 2px 0 12px; scroll-behavior: smooth; scrollbar-width: none; touch-action: pan-x; cursor: grab; }
.phone-product-module-tabs:active, .phone-product-module-tabs.is-dragging { cursor: grabbing; }
.phone-product-module-tabs button { flex: 0 0 auto; padding: 8px 16px; border: 0; border-radius: 6px; color: rgba(29, 34, 51, .5); background: #f5f6f7; font-size: 14px; line-height: 17px; white-space: nowrap; cursor: pointer; scroll-snap-align: start; }
.phone-product-module-tabs button.is-active { padding: 6px 16px; color: #0068eb; background: #0d99ff1a; line-height: 20px; }
.phone-product-module-track { display: flex; width: 100%; gap: 10px; margin-top: 8px; overflow-x: auto; overflow-y: hidden; scroll-snap-type: x mandatory; overscroll-behavior-x: contain; touch-action: auto; scrollbar-width: none; cursor: grab; }
.phone-product-module-track::-webkit-scrollbar { display: none; }
.phone-product-module-track.is-dragging { cursor: grabbing; user-select: none; }
.phone-product-module-card { flex: 0 0 300px; scroll-snap-align: start; scroll-snap-stop: always; overflow: hidden; border-radius: 6px; background: #f5f6f7; }
.phone-product-module-card > img { display: block; width: 100%; aspect-ratio: 300 / 140; object-fit: cover; background: #e4f1fb; }
.phone-product-module-copy { display: flex; flex-direction: column; gap: 16px; padding: 16px; }
.phone-product-module-copy > span { align-self: flex-start; padding: 6px 8px; border-radius: 6px; background: #0d99ff1a; color: #0068eb; font-size: 12px; line-height: 14px; }
.phone-product-module-copy .phone-product-module-heading { margin: 0; color: #1d2233; font-size: 14px; line-height: 20px; }
.phone-product-module-copy p { margin: 0; color: rgba(29, 34, 51, .6); font-size: 14px; line-height: 1.6; }
.phone-product-module-copy .phone-product-pain { margin: 0; color: #1d2233; font-size: 16px; font-weight: 400; line-height: 20px; }

.phone-product-architecture-card { display: flex; width: 100%; flex-direction: column; align-items: center; row-gap: 24px; padding: 24px 16px; border-radius: 16px; background: #fff; }
.phone-product-architecture-card > h2 { margin: 0; color: #1d2233; font-size: clamp(24px, 6vw, 30px); line-height: 1.5; text-align: center; }

.phone-product-feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(12px, 3.2vw, 24px); }
.phone-product-feature-grid h3 { margin: 0; color: #1d2233; font-size: 16px; font-weight: 500; line-height: 2; }
.phone-product-feature-grid article { min-width: 0; padding: clamp(12px, 3vw, 24px); border-radius: 6px; background: rgba(13, 153, 255, 0.1); }
.phone-product-feature-grid img { display: block; width: clamp(58px, 15vw, 105px); height: clamp(58px, 15vw, 105px); margin: 0 auto 12px; object-fit: contain; }
.phone-product-feature-grid h3 { text-align: center; }
.phone-product-feature-grid p { color: #6685a3; line-height: 1.65; }
.phone-product-feature-grid article > div { display: flex; flex-wrap: wrap; gap: 6px; }
.phone-product-feature-grid span { padding: 4px 8px; border-radius: 6px; color: #0d99ff; background: rgba(255, 255, 255, .6); font-size: 14px; }

.phone-product-business { background: #f7f9fb; }
.phone-product-business-group { display: flex; width: 100%; flex-direction: column; align-items: center; row-gap: 24px; padding: 24px 0; border-radius: 12px; background: #fff; }
.phone-product-business-group > h2 { margin: 0; color: #1d2233; font-size: clamp(24px, 6vw, 50px); line-height: 1.5; text-align: center; }

.phone-product-business-card { width: min(84vw, 470px); overflow: hidden; border-radius: 6px; background: #f5f6f7; }
.phone-product-business-card > img { display: block; width: 100%; aspect-ratio: 300 / 170; object-fit: cover; }
.phone-product-business-card > div { display: flex; flex-direction: column; gap: 8px; padding: clamp(18px, 4vw, 30px); }
.phone-product-business-card h3 { margin: 0; color: #1d2233; font-size: clamp(16px, 4.267vw, 20px); font-weight: 500; line-height: 1.4; }
.phone-product-business-card p { display: flex; flex-wrap: wrap; gap: 0 2px; margin: 0; color: #6583a0; font-size: clamp(13px, 3.59vw, 15px); line-height: 1.55; }
.phone-product-business-card p strong { color: #626a78; font-weight: 400; }
.phone-product-business-card p strong::after { content: "："; }
.phone-product-business-card p span { color: #626a78; }
.phone-product-business-dots { display: flex; justify-content: center; gap: 8px; margin-top: 8px; }
.phone-product-business-dots button { width: 8px; height: 4px; padding: 0; border: 0; border-radius: 4px; background: rgba(29, 34, 51, .2); cursor: pointer; transition: all .3s; }
.phone-product-business-dots button.is-active { width: 16px; background: rgba(29, 34, 51, .4); }

.phone-product-tech { background: #f5f6f7; }
.phone-product-tech-card { display: flex; width: 100%; min-width: 0; flex-direction: column; align-items: center; row-gap: 24px; padding: 24px 16px; border-radius: 12px; background: #fff; }
.phone-product-tech-card > h2 { margin: 0; color: #1d2233; font-size: clamp(24px, 6vw, 30px); line-height: 1.5; text-align: center; }
.phone-product-tech-grid { display: grid; width: 100%; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.phone-product-tech-grid article { min-width: 0; padding: 14px 12px; border-radius: 8px; background: #f5f8fb; text-align: center; }
.phone-product-tech-grid img { display: block; width: clamp(58px, 15vw, 96px); height: clamp(58px, 15vw, 96px); margin: 0 auto 10px; object-fit: contain; }
.phone-product-tech-grid h3 { margin: 0; color: #1d2233; font-size: 16px; font-weight: 500; line-height: 1.45; }
.phone-product-tech-grid p { margin: 8px 0 0; color: #6685a3; font-size: 14px; line-height: 1.65; text-align: left; }
.phone-product-partner-title { margin: 8px 0 0; color: #1d2233; font-size: clamp(20px, 5vw, 28px); font-weight: 500; line-height: 1.5; text-align: center; }
.phone-product-partner-grid { display: grid; width: 100%; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.phone-product-partner-grid article { display: flex; min-width: 0; min-height: 82px; flex-direction: column; align-items: center; justify-content: center; padding: 8px; border-radius: 8px; background: #f5f6f7; text-align: center; }
.phone-product-partner-grid img { display: block; width: 100%; height: 58px; object-fit: contain; }
.phone-product-partner-grid strong { margin-top: 6px; color: #0068eb; font-size: 16px; }
.phone-product-partner-grid span { margin-top: 2px; color: #6685a3; font-size: 12px; line-height: 1.4; }

.phone-product-services { background: #f7f9fb; }
.phone-product-services-card { display: flex; width: 100%; flex-direction: column; align-items: center; row-gap: 24px; padding: 24px 16px; border-radius: 12px; background: #fff; }
.phone-product-services-card > h2 { margin: 0; color: #1d2233; font-size: clamp(24px, 6vw, 50px); line-height: 1.5; text-align: center; }
.phone-product-service-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(12px, 3.2vw, 24px); }
.phone-product-service-grid article { min-width: 0; min-height: 250px; padding: clamp(16px, 3.5vw, 26px); border-radius: 6px; background: #09ddff1a; text-align: center; }
.phone-product-service-grid h3 { margin: 0; color: #1d2233; font-size: 16px; font-weight: 500; line-height: 2; }
.phone-product-service-grid img { width: clamp(64px, 16vw, 112px); height: clamp(64px, 16vw, 112px); object-fit: contain; }
.phone-product-service-grid p { margin: 14px 0 0; color: #737f90; line-height: 1.7; text-align: left; }

.phone-product-cases-card { display: flex; width: 100%; flex-direction: column; align-items: center; row-gap: 24px; padding: 24px 16px; border-radius: 12px; background: #fff; }
.phone-product-section-heading { text-align: center; }
.phone-product-section-heading h2 { margin: 0; color: #1d2233; font-size: clamp(24px, 6vw, 30px); line-height: 1.5; }
.phone-product-section-heading h2 span { color: #008cff; }
.phone-product-section-heading p { margin: 10px 0 0; color: #6685a3; font-size: clamp(15px, 3.333vw, 25px); line-height: 1.55; }
.phone-product-featured-case { position: relative; min-height: 290px; padding: clamp(16px, 4.2vw, 32px); border-radius: 8px; background: #f5f6f7; }
.phone-product-featured-case h3 { margin: 0 0 8px; color: #1d2233; font-size: clamp(20px, 4.133vw, 31px); }
.phone-product-featured-case strong { display: block; color: #626a78; font-size: clamp(16px, 3.4vw, 28px); font-weight: 500; line-height: 1.55; }
.phone-product-featured-case p { max-width: 100%; margin: 8px 0 0; color: #626a78; font-size: clamp(14px, 2.533vw, 19px); line-height: 1.65; }
.phone-product-case-signature { display: flex; align-items: center; justify-content: space-between; margin-top: 16px; }
.phone-product-case-signature img { display: block; width: clamp(80px, 12vw, 90px); height: auto; object-fit: contain; }
.phone-product-case-signature span { color: #626a78; font-size: clamp(14px, 2.5333vw, 19px); white-space: nowrap; }
.phone-product-case-logos { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(10px, 2.533vw, 19px); }
.phone-product-case-logos img { width: 100%; height: clamp(74px, 12.267vw, 92px); padding: 5px; border-radius: 8px; background: #f5f6f7; object-fit: contain; }
.phone-product-soft-button { display: block; width: max-content; max-width: 100%; margin: 20px auto 0; padding: 13px clamp(20px, 4.533vw, 34px); border: 0; border-radius: 8px; background: #d1edff; color: #0068eb; font-size: clamp(15px, 3.333vw, 25px); line-height: 1.35; text-align: center; text-decoration: none; }

.phone-product-faq { background: #f7f9fb; }
.phone-product-faq-card { display: flex; width: 100%; flex-direction: column; align-items: center; row-gap: 24px; padding: 24px 16px; border-radius: 12px; background: #fff; }
.phone-product-faq-list { width: 100%; border-top: 1px solid #e8e9ee; }
.phone-product-faq-item { border-bottom: 1px solid #e8e9ee; }
.phone-product-faq-item summary { display: grid; grid-template-columns: minmax(0, 1fr) 20px; gap: 14px; align-items: center; padding: 22px 0; color: #193d62; cursor: pointer; font-size: clamp(15px, 3.6vw, 24px); line-height: 1.55; list-style: none; }
.phone-product-faq-item summary::-webkit-details-marker { display: none; }
.phone-product-faq-item summary svg { display: none; flex-shrink: 0; transition: transform .2s ease; }
.phone-product-faq-item[open] summary svg { transform: rotate(-90deg); }
.phone-product-faq-item > div { padding: 0 0 24px; color: #65778c; }
.phone-product-faq-item > div p { margin: 0; line-height: 1.8; }

@media (max-width: 479px) {
    .phone-product-hero-actions { width: 100%; }
    .phone-product-hero-actions a { flex: 1 1 calc(50% - 8px); min-width: 140px; }
    .phone-product-featured-case { grid-template-columns: 1fr; }
    .phone-product-featured-case img { justify-self: end; }
}

@media (max-width: 359px) {
    .phone-product-section-inner { padding-inline: 14px; }
    .phone-product-hero-highlights { grid-template-columns: 1fr; }
    .phone-product-case-logo-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
    .phone-product-track { scroll-behavior: auto; }
    .phone-product-faq-item summary svg { transition: none; }
}