/* Nền TRẮNG, màu dồn vào điểm nhấn (vòng cung + quầng sáng theo section) — không phủ mint
   toàn trang, vì mảng màu nhạt trải đều làm chữ mất tương phản và trang trông phẳng.
   Màu mint/ink vẫn là token LIGHT trong design.md (mint500 3FBE86, mintInk 22503E);
   riêng chữ dùng biến TỐI hơn (--dim/--faint/--mint700/--amber) để đạt tương phản AA.
   Font SELF-HOST tại /fonts — không gọi bên thứ ba (sản phẩm VPN riêng tư). */
@font-face{font-family:'Hanken Grotesk';font-style:italic;font-weight:700;font-display:swap;src:url(/fonts/hanken-700i-vietnamese.woff2) format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}
@font-face{font-family:'Hanken Grotesk';font-style:italic;font-weight:700;font-display:swap;src:url(/fonts/hanken-700i-latin.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:'Hanken Grotesk';font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/hanken-400-vietnamese.woff2) format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}
@font-face{font-family:'Hanken Grotesk';font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/hanken-400-latin.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:'Hanken Grotesk';font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/hanken-600-vietnamese.woff2) format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}
@font-face{font-family:'Hanken Grotesk';font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/hanken-600-latin.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:'Hanken Grotesk';font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/hanken-700-vietnamese.woff2) format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}
@font-face{font-family:'Hanken Grotesk';font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/hanken-700-latin.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
/* Space Grotesk — variable font (weight 300–700 trong 1 file), latin + vietnamese */
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:300 700;font-display:swap;src:url(/fonts/spacegrotesk-var-vietnamese.woff2) format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:300 700;font-display:swap;src:url(/fonts/spacegrotesk-var-latin.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}

:root{
  --bg:#FFFFFF; --band:rgba(236,244,240,.72); /* TRONG SUỐT: motif phải xuyên qua được */
  --surface:#FFFFFF; --surface-muted:#F3F7F5;
  --line:#DFE6E3; --line-soft:#EAF0ED;
  --ink:#1A1D20; --dim:#4E565C; --faint:#5F676D;
  --mint:#3FBE86; --mint600:#2FA271; --mint400:#63CE9C; --mint300:#8FD9B6; --mint100:#DCF1E7;
  --mint-ink:#22503E; --hero-stroke:#C9E7D8;
  /* biến dành cho CHỮ (đạt >=4.5:1 trên nền trắng) — đừng dùng mint600/amber-line làm màu chữ */
  --mint700:#17714A; --amber:#A85F19; --amber-line:#E08B3C;
  --teal:#2BB6A8; --iris:#6E7BF2;
  --sh-sm:0 2px 6px rgba(34,80,62,.05), 0 1px 2px rgba(34,80,62,.04);
  --sh-md:0 14px 30px -12px rgba(34,80,62,.16), 0 2px 8px rgba(34,80,62,.05);
  --sh-lg:0 40px 70px -24px rgba(34,80,62,.30), 0 6px 18px rgba(34,80,62,.08);
  --shell:1200px; --r:20px;
}
*{box-sizing:border-box;margin:0;padding:0}
/* Nền trắng đặt ở HTML, KHÔNG đặt ở BODY. Motif nằm ở `body::before` với z-index âm, mà
   trong thứ tự vẽ của stacking context gốc, nền của chính BODY được vẽ SAU lớp z-index âm.
   Hiện motif nhìn thấy được chỉ vì html chưa có nền nên nền của body được đẩy lên canvas
   (canvas vẽ trước tất cả). Ai thêm `background` cho html là body giành lại nền của nó và
   phủ kín motif — hỏng hoàn toàn im lặng, không lỗi nào báo. Để ở html thì hết cửa đó. */
html{background:var(--bg);scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  color:var(--ink); position:relative;
  font:400 20px/1.6 "Space Grotesk","Hanken Grotesk",-apple-system,"Segoe UI",Roboto,sans-serif;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
img{max-width:100%;display:block}
/* MOTIF NỀN — MỘT mạch chạy suốt từ đầu tới cuối trang, không phải mảng màu phủ.
   Ô lặp SVG sinh bằng VPN-WireGuard/scripts/gen-motif.py: các nút hình khối (logo app / lục giác /
   vòng tròn / thoi) xen kẽ trái–phải, màu theo MỘT dải gradient mint→teal→mint nên toàn trang
   đồng một tông. TĨNH và không có đường nối — bản có đường hầm chạy dọc + hiệu ứng trôi đã bỏ
   2026-08-25 (user thấy rối). Toạ độ nút vẫn lấy từ đỉnh sóng sin nên vẫn xen kẽ và lặp khít.
   `background-size:100vw ...` -> ô luôn rộng đúng bằng màn hình, nút nằm ở 20% và 80% bề ngang
   nên KHÔNG bao giờ bị mép màn cắt (bản trước neo ô 1600px cố định, màn hẹp là nút bị xén nửa).
   Tỉ lệ viewBox: ô rộng 1:2 -> `100vw 200vw`; ô điện thoại 1:6 -> `100vw 600vw`. Đặt sai tỉ lệ
   là hình méo mà không có lỗi nào báo. */
body::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 1600 3200%22 preserveAspectRatio=%22none%22%3E%3Cdefs%3E%3ClinearGradient id=%22mg%22 gradientUnits=%22userSpaceOnUse%22 x1=%220%22 y1=%220%22 x2=%220%22 y2=%223200%22%3E%3Cstop offset=%220.0%22 stop-color=%22%233FBE86%22/%3E%3Cstop offset=%220.25%22 stop-color=%22%232BB6A8%22/%3E%3Cstop offset=%220.5%22 stop-color=%22%232FA271%22/%3E%3Cstop offset=%220.75%22 stop-color=%22%232BB6A8%22/%3E%3Cstop offset=%221.0%22 stop-color=%22%233FBE86%22/%3E%3C/linearGradient%3E%3C/defs%3E%3Cg transform=%22translate(1376 400) scale(2.7200) translate(-50 -50)%22%3E%3Cpath d=%22M50 6.0 L92.0 22.0 C92.0 56.0 84.0 82.0 50 94.0 C16.0 82.0 8.0 56.0 8.0 22.0 Z%22 fill=%22url(%23mg)%22 fill-opacity=%22.04%22/%3E%3Cpath d=%22M50 6.0 L92.0 22.0 C92.0 56.0 84.0 82.0 50 94.0 C16.0 82.0 8.0 56.0 8.0 22.0 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.26%22 stroke-width=%222.60%22/%3E%3Cpath d=%22M50 19.200000000000003 L79.4 30.400000000000002 C79.4 54.2 73.8 72.4 50 80.8 C26.200000000000003 72.4 20.6 54.2 20.6 30.400000000000002 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.19%22 stroke-width=%221.70%22/%3E%3Cpath d=%22M56 26 L36 53 L48 53 L45 74 L64 47 L52 47 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.14%22 stroke-width=%221.70%22/%3E%3C/g%3E%3Cg transform=%22translate(224 1200) scale(2.7200) translate(-50 -50)%22%3E%3Cpath d=%22M50.0 0.0 L93.3 25.0 L93.3 75.0 L50.0 100.0 L6.7 75.0 L6.7 25.0 Z%22 fill=%22url(%23mg)%22 fill-opacity=%22.04%22/%3E%3Cpath d=%22M50.0 0.0 L93.3 25.0 L93.3 75.0 L50.0 100.0 L6.7 75.0 L6.7 25.0 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.26%22 stroke-width=%222.60%22/%3E%3Cpath d=%22M50.0 15.0 L80.3 32.5 L80.3 67.5 L50.0 85.0 L19.7 67.5 L19.7 32.5 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.19%22 stroke-width=%221.70%22/%3E%3Cpath d=%22M50.0 29.0 L68.2 39.5 L68.2 60.5 L50.0 71.0 L31.8 60.5 L31.8 39.5 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.14%22 stroke-width=%221.70%22/%3E%3C/g%3E%3Cg transform=%22translate(1376 2000) scale(2.7200) translate(-50 -50)%22%3E%3Cpath d=%22M0.0 50 A50.0 50.0 0 1 0 100.0 50 A50.0 50.0 0 1 0 0.0 50 Z%22 fill=%22url(%23mg)%22 fill-opacity=%22.04%22/%3E%3Cpath d=%22M0.0 50 A50.0 50.0 0 1 0 100.0 50 A50.0 50.0 0 1 0 0.0 50 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.26%22 stroke-width=%222.60%22/%3E%3Cpath d=%22M15.0 50 A35.0 35.0 0 1 0 85.0 50 A35.0 35.0 0 1 0 15.0 50 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.19%22 stroke-width=%221.70%22/%3E%3Cpath d=%22M29.0 50 A21.0 21.0 0 1 0 71.0 50 A21.0 21.0 0 1 0 29.0 50 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.14%22 stroke-width=%221.70%22/%3E%3C/g%3E%3Cg transform=%22translate(224 2800) scale(2.7200) translate(-50 -50)%22%3E%3Cpath d=%22M50 0.0 L88.0 38.0 Q100.0 50 88.0 62.0 L50 100.0 L12.0 62.0 Q0.0 50 12.0 38.0 Z%22 fill=%22url(%23mg)%22 fill-opacity=%22.04%22/%3E%3Cpath d=%22M50 0.0 L88.0 38.0 Q100.0 50 88.0 62.0 L50 100.0 L12.0 62.0 Q0.0 50 12.0 38.0 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.26%22 stroke-width=%222.60%22/%3E%3Cpath d=%22M50 15.0 L76.6 41.6 Q85.0 50 76.6 58.4 L50 85.0 L23.4 58.4 Q15.0 50 23.4 41.6 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.19%22 stroke-width=%221.70%22/%3E%3Cpath d=%22M50 29.0 L66.0 45.0 Q71.0 50 66.0 55.0 L50 71.0 L34.0 55.0 Q29.0 50 34.0 45.0 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.14%22 stroke-width=%221.70%22/%3E%3C/g%3E%3C/svg%3E");
  background-repeat:repeat-y;background-position:center top;background-size:100vw 200vw;
}
a{color:inherit}
.shell{max-width:var(--shell);margin:0 auto;padding:0 24px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;color:var(--mint700);
  font-size:12.5px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;margin-bottom:18px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:currentColor;border-radius:2px;opacity:.8}
h1,h2,h3{letter-spacing:-.028em;line-height:1.08;font-weight:700}
.lead{color:var(--dim);font-size:20px;line-height:1.65}


/* ---------- blob nền ---------- */
.blob{position:absolute;border-radius:50%;filter:blur(104px);opacity:.4;pointer-events:none;z-index:0;will-change:transform}
.blob.m{background:radial-gradient(circle,#8FD9B6,transparent 68%)}
.blob.t{background:radial-gradient(circle,#7ED4CC,transparent 68%)}
.blob.i{background:radial-gradient(circle,#A9B2F8,transparent 68%)}
.blob.a{background:radial-gradient(circle,#F3C892,transparent 68%)}
@keyframes drift{
  0%,100%{transform:translate3d(0,0,0) scale(1)}
  33%{transform:translate3d(4%,-6%,0) scale(1.08)}
  66%{transform:translate3d(-5%,4%,0) scale(.95)}
}
.blob.anim{animation:drift 26s ease-in-out infinite}
.blob.anim.d2{animation-duration:34s;animation-delay:-8s}
.blob.anim.d3{animation-duration:42s;animation-delay:-17s}

/* ---------- nav ---------- */
.nav{position:fixed;inset:0 0 auto;z-index:40;transition:background .3s}
.nav.stuck{background:rgba(255,255,255,.92);backdrop-filter:saturate(170%) blur(16px);-webkit-backdrop-filter:saturate(170%) blur(16px)}
.nav-in{display:flex;align-items:center;gap:20px;height:70px}
.brand{display:flex;align-items:center;gap:11px;font-size:18px;font-weight:700;letter-spacing:-.02em;text-decoration:none;margin-right:auto}
.brand img{width:32px;height:32px;border-radius:9px}
.navlinks{display:flex;align-items:center;gap:28px;font-size:15px;font-weight:600}
.navlinks a{color:var(--dim);text-decoration:none;transition:color .2s}
.navlinks a:hover{color:var(--mint700)}
.lang{
  background:var(--surface);border:1px solid var(--line);border-radius:999px;color:var(--dim);
  font:600 13px/1 "Space Grotesk","Hanken Grotesk",sans-serif;padding:9px 14px;cursor:pointer;transition:.2s;letter-spacing:.04em;
}
.lang:hover{color:var(--mint700);border-color:var(--mint300)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font:600 15px/1 "Space Grotesk","Hanken Grotesk",sans-serif;text-decoration:none;border:0;cursor:pointer;
  padding:13px 22px;border-radius:999px;transition:transform .2s,box-shadow .2s,background .2s;white-space:nowrap;
}
.btn-primary{background:linear-gradient(180deg,var(--mint400),var(--mint));color:var(--mint-ink);box-shadow:0 8px 22px -6px rgba(47,162,113,.5)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px -8px rgba(47,162,113,.6)}
.btn-ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line);box-shadow:var(--sh-sm)}
.btn-ghost:hover{border-color:var(--mint300);transform:translateY(-2px)}
.btn svg{width:16px;height:16px}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;overflow:hidden;padding:122px 0 108px;isolation:isolate}
.hero::before{ /* quầng sáng khu trú sau icon app — không phải mảng nền phủ kín */
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(680px 460px at 50% 4%, rgba(63,190,134,.17), transparent 70%);
}
.hero::after{ /* lưới mảnh cho có chất kỹ thuật, mờ dần ra rìa */
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;opacity:.8;
  background-image:linear-gradient(rgba(34,80,62,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(34,80,62,.07) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 35%,#000,transparent 78%);
  mask-image:radial-gradient(ellipse 80% 60% at 50% 35%,#000,transparent 78%);
}
.hero-glow{position:absolute;inset:-10% -10% 0;z-index:0}
.hero .b1{width:720px;height:720px;left:-20%;top:-28%;opacity:.34}
.hero .b2{width:620px;height:620px;right:-18%;top:-16%;opacity:.26}
.hero .b3{display:none}
.hero-in{position:relative;z-index:2;text-align:center;margin:0 auto;max-width:900px}
.hero-icon{width:84px;height:84px;border-radius:23px;margin:0 auto 30px;position:relative;box-shadow:0 22px 46px -14px rgba(34,80,62,.45)}
.hero-icon::after{content:"";position:absolute;inset:-30%;border-radius:50%;background:radial-gradient(circle,rgba(63,190,134,.34),transparent 65%);z-index:-1;filter:blur(22px)}
.hero h1{font-size:clamp(36px,4.4vw,56px);line-height:1.08;color:var(--mint-ink)}
.hero h1 em{font-style:italic;background:linear-gradient(100deg,#1F8659,#14887C 58%,#249A6D);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:#2C5344;font-size:20px;line-height:1.6;max-width:640px;margin:24px auto 0}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:38px}
.store{
  display:inline-flex;align-items:center;gap:13px;text-decoration:none;
  background:var(--mint-ink);border:1px solid transparent;border-radius:16px;padding:11px 22px 11px 18px;
  transition:.22s;color:#fff;box-shadow:0 12px 26px -14px rgba(34,80,62,.85);
}
.store:hover{transform:translateY(-2px);box-shadow:0 18px 34px -14px rgba(34,80,62,.9)}
.store svg{width:26px;height:26px;flex-shrink:0;fill:currentColor}
.store i{font-style:normal;display:block;text-align:left}
.store small{display:block;font-size:11.5px;font-weight:400;color:rgba(255,255,255,.72);letter-spacing:.02em}
.store b{display:block;font-size:16.5px;font-weight:700;letter-spacing:-.01em;line-height:1.25}
.trustline{display:flex;gap:10px 22px;justify-content:center;flex-wrap:wrap;margin-top:32px;color:var(--dim);font-size:14px;font-weight:600}
.trustline span{display:inline-flex;align-items:center;gap:8px}
.trustline span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 3px rgba(63,190,134,.18)}
.scroll-cue{position:absolute;left:50%;bottom:30px;transform:translateX(-50%);z-index:2;color:var(--faint)}
.scroll-cue svg{width:22px;height:22px;animation:bob 2.2s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0);opacity:.45}50%{transform:translateY(7px);opacity:1}}

/* ---------- dải thành phố ---------- */
.cities{position:relative;z-index:2;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--band);padding:26px 0}
.cities .cap{text-align:center;color:var(--faint);font-size:12.5px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;margin-bottom:16px}
.citymq{overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.citymq-track{display:flex;width:max-content;animation:slide 38s linear infinite}
.citymq:hover .citymq-track{animation-play-state:paused}
.citymq-half{display:flex;align-items:center;gap:44px;padding-right:44px}
.citymq-half b{font-size:19px;font-weight:700;color:var(--dim);letter-spacing:-.005em;white-space:nowrap;display:inline-flex;align-items:center;gap:11px}
.citymq-half b::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 3px rgba(63,190,134,.2);flex-shrink:0}
@keyframes slide{to{transform:translateX(-50%)}}

/* ---------- section so le: chữ | mockup ---------- */
.story{position:relative;overflow:hidden;padding:88px 0}
.story-in{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center;position:relative;z-index:2}
.story.rev .story-in{direction:rtl}
.story.rev .story-in>*{direction:ltr}
.story h2{font-size:30px;max-width:14em}
.story .lead{margin-top:18px}
.story .lead+.lead{margin-top:14px}
.storylist{list-style:none;margin-top:26px;display:grid;gap:12px}
.storylist li{display:flex;gap:12px;align-items:flex-start;color:var(--dim);font-size:16px}
.storylist svg{width:20px;height:20px;flex-shrink:0;margin-top:2px;color:var(--mint600)}
.story .b1{width:660px;height:660px;opacity:.42}
.story .g-l{left:-16%;top:8%}
.story .g-r{right:-16%;top:8%}

/* device mockup — khung máy tối trên nền sáng */
.device{position:relative;display:flex;justify-content:center}
.phone{
  position:relative;width:min(286px,76%);aspect-ratio:1320/2868;border-radius:46px;
  background:linear-gradient(150deg,#3A403D,#1E2124 42%,#2C3330);padding:9px;
  box-shadow:var(--sh-lg), inset 0 1px 1px rgba(255,255,255,.22);
}
.phone-scr{position:relative;width:100%;height:100%;border-radius:38px;overflow:hidden;background:#EAF6F0}
.phone-scr img{width:100%;height:100%;object-fit:cover;object-position:top}
.phone::before{ /* dynamic island */
  content:"";position:absolute;top:20px;left:50%;transform:translateX(-50%);
  width:31%;height:1.05%;min-height:11px;background:#111413;border-radius:99px;z-index:3;
}
.device::before{ /* quầng màu sau máy */
  content:"";position:absolute;width:80%;height:64%;top:18%;border-radius:50%;
  background:radial-gradient(circle,rgba(99,206,156,.42),transparent 70%);filter:blur(52px);z-index:0;
}
.device.i::before{background:radial-gradient(circle,rgba(169,178,248,.5),transparent 70%)}
.device.t::before{background:radial-gradient(circle,rgba(126,212,204,.5),transparent 70%)}
.device.a::before{background:radial-gradient(circle,rgba(243,200,146,.45),transparent 70%)}

/* ---------- section chung ---------- */
.sec{position:relative;padding:92px 0;overflow:hidden}
/* nhịp trang do DẢI section tạo ra, không do lớp màu phủ toàn trang */
.sec.band,.story.band{background:var(--band);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.sec-head{text-align:center;max-width:660px;margin:0 auto 56px;position:relative;z-index:2}
.sec-head h2{font-size:30px}
.sec-head p{color:var(--dim);font-size:20px;margin-top:16px}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent)}

/* features */
.feats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;position:relative;z-index:2}
.feat{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  padding:28px 26px 30px;transition:.25s;position:relative;overflow:hidden;box-shadow:var(--sh-sm);
}
.feat:hover{transform:translateY(-4px);border-color:var(--mint300);box-shadow:var(--sh-md)}
.feat .ic{
  width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:var(--mint100);color:var(--mint600);margin-bottom:20px;
}
.feat .ic svg{width:23px;height:23px}
.feat b{display:block;font-size:18px;font-weight:700;letter-spacing:-.015em;margin-bottom:8px}
.feat p{color:var(--dim);font-size:15.5px;line-height:1.62}

/* servers */
.servers-in{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;position:relative;z-index:2}
.servers-in h2{font-size:30px;max-width:13em}
.servers-in .lead{margin-top:18px;max-width:34em}
.globe{position:relative;display:flex;justify-content:center}
.globe svg{width:min(440px,92%);height:auto;overflow:visible}
.globe::before{content:"";position:absolute;width:66%;height:66%;top:14%;border-radius:50%;background:radial-gradient(circle,rgba(99,206,156,.42),transparent 70%);filter:blur(60px)}
.globe .grid{animation:spin 46s linear infinite;transform-origin:230px 230px}
@keyframes spin{to{transform:rotate(360deg)}}
.globe .pin{animation:pulse 3.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.5}50%{opacity:1}}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.chips span{
  display:inline-flex;align-items:center;gap:9px;background:var(--surface);border:1px solid var(--line);
  border-radius:999px;padding:9px 16px;font-size:14.5px;font-weight:600;color:var(--dim);transition:.2s;box-shadow:var(--sh-sm);
}
.chips span:hover{color:var(--ink);border-color:var(--mint300)}
.chips span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 3px rgba(63,190,134,.18)}

/* pricing */
.plans{display:grid;grid-template-columns:repeat(2,minmax(0,390px));gap:22px;justify-content:center;position:relative;z-index:2;align-items:stretch}
.plan{background:var(--surface);border:1px solid var(--line);border-radius:26px;padding:34px 30px 36px;position:relative;box-shadow:var(--sh-sm)}
.plan.hot{border:2px solid var(--mint);box-shadow:0 26px 54px -22px rgba(63,190,134,.55)}
.plan .pop{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--mint);color:var(--mint-ink);
  font-size:11.5px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;border-radius:999px;padding:5px 15px;white-space:nowrap;
}
.plan .name{font-size:13px;font-weight:700;color:var(--faint);text-transform:uppercase;letter-spacing:.14em}
.plan .price{font-size:46px;font-weight:700;letter-spacing:-.035em;margin:12px 0 2px;line-height:1}
.plan .price small{font-size:16px;font-weight:400;color:var(--faint);letter-spacing:0}
.plan .alt{color:var(--mint700);font-size:14px;font-weight:600;min-height:22px}
.plan ul{list-style:none;margin:24px 0 0;display:grid;gap:14px}
.plan li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--dim);line-height:1.55}
.plan li svg{width:19px;height:19px;flex-shrink:0;margin-top:2px;color:var(--mint600)}
.note{color:var(--faint);font-size:13.5px;text-align:center;margin:30px auto 0;max-width:640px;line-height:1.6;position:relative;z-index:2}

/* CTA cuối */
.cta{position:relative;overflow:hidden;padding:110px 0 120px;text-align:center}
.cta .b1{width:900px;height:700px;left:50%;top:-10%;transform:translateX(-50%);opacity:.4}
.cta-in{position:relative;z-index:2;max-width:720px;margin:0 auto}
.cta img.icon{width:76px;height:76px;border-radius:21px;margin:0 auto 26px;box-shadow:0 22px 44px -14px rgba(34,80,62,.45)}
.cta h2{font-size:clamp(30px,3vw,38px);color:var(--mint-ink)}
.cta p{color:var(--dim);font-size:20px;margin-top:16px}
.cta .hero-actions{margin-top:34px}

footer{border-top:1px solid var(--line);padding:34px 0;position:relative;z-index:2;background:var(--band)}
.foot-in{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;color:var(--faint);font-size:14px}
.foot-in .brand{margin-right:0;font-size:16px;color:var(--dim)}
.foot-in .brand img{width:26px;height:26px;border-radius:8px}
.foot-links{display:flex;gap:24px;font-weight:600}
.foot-links a{color:var(--faint);text-decoration:none;transition:color .2s}
.foot-links a:hover{color:var(--mint700)}

/* hiện dần khi cuộn */
.js-rv .rv{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.22,.75,.3,1),transform .7s cubic-bezier(.22,.75,.3,1)}
.js-rv .rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.08s}.rv.d2{transition-delay:.16s}.rv.d3{transition-delay:.24s}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .feats{grid-template-columns:repeat(2,1fr)}
  .story-in,.servers-in{grid-template-columns:1fr;gap:48px}
  .story.rev .story-in{direction:ltr}
  .story .device,.servers-in .globe{order:-1}
  .story,.sec{padding:72px 0}
  .story-in .copy,.servers-in .copy{text-align:center}
  .servers-in .copy .chips{justify-content:center}
  .story-in .copy .storylist{text-align:left}
  .story-in .copy .storylist{max-width:460px;margin-left:auto;margin-right:auto}
  .story-in .copy .lead{margin-left:auto;margin-right:auto;max-width:560px}
}
@media(max-width:760px){
  body{font-size:17px}
  .navlinks a{display:none}
  .nav-in{height:62px;gap:12px}
  .hero{min-height:auto;padding:112px 0 104px}
  .hero-actions{gap:11px}
  .scroll-cue{display:none}
  .plans{grid-template-columns:minmax(0,420px)}
  .feats{grid-template-columns:1fr}
  .phone{width:min(268px,72%)}
  .cta{padding:84px 0 96px}
  /* điện thoại: cung + quầng đều tính theo vw (dùng % thì ăn theo chiều cao section,
     màn hẹp là cung trùm luôn vùng chữ) */
  .hero::before{background:radial-gradient(420px 300px at 50% 2%, rgba(63,190,134,.15), transparent 70%)}
  .hero .b1{width:400px;height:400px;left:-30%;top:-14%;opacity:.24}
  .hero .b2{display:none}
  /* ô điện thoại tỉ lệ 1:6, background-size VÀ keyframes đều phải đổi theo */
  body::before{background-image:url("data:image/svg+xml,%3Csvg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 760 4560%22 preserveAspectRatio=%22none%22%3E%3Cdefs%3E%3ClinearGradient id=%22mg%22 gradientUnits=%22userSpaceOnUse%22 x1=%220%22 y1=%220%22 x2=%220%22 y2=%224560%22%3E%3Cstop offset=%220.0%22 stop-color=%22%233FBE86%22/%3E%3Cstop offset=%220.25%22 stop-color=%22%232BB6A8%22/%3E%3Cstop offset=%220.5%22 stop-color=%22%232FA271%22/%3E%3Cstop offset=%220.75%22 stop-color=%22%232BB6A8%22/%3E%3Cstop offset=%221.0%22 stop-color=%22%233FBE86%22/%3E%3C/linearGradient%3E%3C/defs%3E%3Cg transform=%22translate(654 570) scale(1.5800) translate(-50 -50)%22%3E%3Cpath d=%22M50 6.0 L92.0 22.0 C92.0 56.0 84.0 82.0 50 94.0 C16.0 82.0 8.0 56.0 8.0 22.0 Z%22 fill=%22url(%23mg)%22 fill-opacity=%22.04%22/%3E%3Cpath d=%22M50 6.0 L92.0 22.0 C92.0 56.0 84.0 82.0 50 94.0 C16.0 82.0 8.0 56.0 8.0 22.0 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.26%22 stroke-width=%221.61%22/%3E%3Cpath d=%22M50 19.200000000000003 L79.4 30.400000000000002 C79.4 54.2 73.8 72.4 50 80.8 C26.200000000000003 72.4 20.6 54.2 20.6 30.400000000000002 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.19%22 stroke-width=%221.05%22/%3E%3Cpath d=%22M56 26 L36 53 L48 53 L45 74 L64 47 L52 47 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.14%22 stroke-width=%221.05%22/%3E%3C/g%3E%3Cg transform=%22translate(106 1710) scale(1.5800) translate(-50 -50)%22%3E%3Cpath d=%22M50.0 0.0 L93.3 25.0 L93.3 75.0 L50.0 100.0 L6.7 75.0 L6.7 25.0 Z%22 fill=%22url(%23mg)%22 fill-opacity=%22.04%22/%3E%3Cpath d=%22M50.0 0.0 L93.3 25.0 L93.3 75.0 L50.0 100.0 L6.7 75.0 L6.7 25.0 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.26%22 stroke-width=%221.61%22/%3E%3Cpath d=%22M50.0 15.0 L80.3 32.5 L80.3 67.5 L50.0 85.0 L19.7 67.5 L19.7 32.5 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.19%22 stroke-width=%221.05%22/%3E%3Cpath d=%22M50.0 29.0 L68.2 39.5 L68.2 60.5 L50.0 71.0 L31.8 60.5 L31.8 39.5 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.14%22 stroke-width=%221.05%22/%3E%3C/g%3E%3Cg transform=%22translate(654 2850) scale(1.5800) translate(-50 -50)%22%3E%3Cpath d=%22M0.0 50 A50.0 50.0 0 1 0 100.0 50 A50.0 50.0 0 1 0 0.0 50 Z%22 fill=%22url(%23mg)%22 fill-opacity=%22.04%22/%3E%3Cpath d=%22M0.0 50 A50.0 50.0 0 1 0 100.0 50 A50.0 50.0 0 1 0 0.0 50 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.26%22 stroke-width=%221.61%22/%3E%3Cpath d=%22M15.0 50 A35.0 35.0 0 1 0 85.0 50 A35.0 35.0 0 1 0 15.0 50 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.19%22 stroke-width=%221.05%22/%3E%3Cpath d=%22M29.0 50 A21.0 21.0 0 1 0 71.0 50 A21.0 21.0 0 1 0 29.0 50 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.14%22 stroke-width=%221.05%22/%3E%3C/g%3E%3Cg transform=%22translate(106 3990) scale(1.5800) translate(-50 -50)%22%3E%3Cpath d=%22M50 0.0 L88.0 38.0 Q100.0 50 88.0 62.0 L50 100.0 L12.0 62.0 Q0.0 50 12.0 38.0 Z%22 fill=%22url(%23mg)%22 fill-opacity=%22.04%22/%3E%3Cpath d=%22M50 0.0 L88.0 38.0 Q100.0 50 88.0 62.0 L50 100.0 L12.0 62.0 Q0.0 50 12.0 38.0 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.26%22 stroke-width=%221.61%22/%3E%3Cpath d=%22M50 15.0 L76.6 41.6 Q85.0 50 76.6 58.4 L50 85.0 L23.4 58.4 Q15.0 50 23.4 41.6 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.19%22 stroke-width=%221.05%22/%3E%3Cpath d=%22M50 29.0 L66.0 45.0 Q71.0 50 66.0 55.0 L50 71.0 L34.0 55.0 Q29.0 50 34.0 45.0 Z%22 fill=%22none%22 stroke=%22url(%23mg)%22 stroke-opacity=%22.14%22 stroke-width=%221.05%22/%3E%3C/g%3E%3C/svg%3E");background-size:100vw 600vw}
  .foot-in{justify-content:center;text-align:center}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .citymq-track,.blob.anim,.scroll-cue svg,.globe .grid,.globe .pin{animation:none}
  .js-rv .rv{opacity:1;transform:none;transition:none}
}

/* ============ trang con (/protection, /dedicated-ip) ============ */
.sub-hero{position:relative;overflow:hidden;padding:150px 0 74px;text-align:center;isolation:isolate}
.sub-hero::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;background:radial-gradient(620px 380px at 50% 0%, rgba(63,190,134,.16), transparent 72%)}
.sub-hero .b1{width:760px;height:560px;left:50%;top:-36%;transform:translateX(-50%);opacity:.34}
@media(max-width:760px){.sub-hero{padding:130px 0 92px}}
.sub-hero-in{position:relative;z-index:2;max-width:760px;margin:0 auto}
.sub-hero h1{font-size:clamp(32px,3.6vw,46px);color:var(--mint-ink)}
.sub-hero p{color:#2C5344;font-size:20px;line-height:1.6;max-width:630px;margin:20px auto 0}
.badge{
  display:inline-flex;align-items:center;gap:9px;background:var(--surface);border:1px solid var(--line);
  border-radius:999px;padding:8px 18px;font-size:13.5px;font-weight:700;color:var(--mint700);
  letter-spacing:.02em;box-shadow:var(--sh-sm);margin-bottom:22px;
}
.badge svg{width:16px;height:16px}
.badge.warn{color:var(--amber)}

/* breadcrumb về trang chủ */
.crumb{display:inline-flex;align-items:center;gap:7px;color:var(--dim);font-size:14.5px;font-weight:600;text-decoration:none;margin-bottom:20px;transition:color .2s}
.crumb:hover{color:var(--mint700)}
.crumb svg{width:15px;height:15px}

/* lưới lớp bảo vệ / trường hợp dùng */
.layers{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;position:relative;z-index:2}
@media(max-width:760px){.layers{grid-template-columns:1fr}}
.layer{
  display:flex;gap:18px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  padding:26px;box-shadow:var(--sh-sm);transition:.25s;
}
.layer:hover{border-color:var(--mint300);box-shadow:var(--sh-md);transform:translateY(-3px)}
.layer .ic{width:44px;height:44px;border-radius:13px;flex-shrink:0;display:flex;align-items:center;justify-content:center;background:var(--mint100);color:var(--mint600)}
.layer .ic svg{width:22px;height:22px}
.layer b{display:block;font-size:17.5px;font-weight:700;letter-spacing:-.015em;margin-bottom:6px}
.layer p{color:var(--dim);font-size:15.5px;line-height:1.6}

/* các bước */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;position:relative;z-index:2;counter-reset:st}
@media(max-width:900px){.steps{grid-template-columns:1fr}}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--sh-sm);position:relative}
.step::before{
  counter-increment:st;content:counter(st);display:flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:11px;background:var(--mint-ink);color:#fff;
  font-size:16px;font-weight:700;margin-bottom:18px;
}
.step b{display:block;font-size:17px;font-weight:700;letter-spacing:-.015em;margin-bottom:7px}
.step p{color:var(--dim);font-size:15.5px;line-height:1.6}

/* khối "nói thẳng" — giới hạn kỹ thuật, không giấu */
.honest{
  position:relative;z-index:2;max-width:760px;margin:0 auto;background:var(--surface-muted);
  border:1px solid var(--line);border-left:3px solid var(--amber-line);border-radius:16px;padding:24px 26px;
}
.honest b{display:block;font-size:16.5px;font-weight:700;margin-bottom:8px}
.honest p{color:var(--dim);font-size:15.5px;line-height:1.65}

/* bảng gói cho trang con */
.availability{display:grid;grid-template-columns:repeat(2,minmax(0,340px));gap:18px;justify-content:center;position:relative;z-index:2}
@media(max-width:760px){.availability{grid-template-columns:minmax(0,420px)}}
.avail{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:26px 26px 28px;box-shadow:var(--sh-sm)}
.avail.yes{border-color:var(--mint300)}
.avail .name{font-size:13px;font-weight:700;color:var(--faint);text-transform:uppercase;letter-spacing:.14em;margin-bottom:12px}
.avail .state{display:inline-flex;align-items:center;gap:9px;font-size:19px;font-weight:700;letter-spacing:-.02em}
.avail .state svg{width:22px;height:22px}
.avail.yes .state{color:var(--mint700)}
.avail.no .state{color:var(--amber)}
.avail p{color:var(--dim);font-size:15px;line-height:1.6;margin-top:12px}

/* link "tìm hiểu thêm" dẫn sang trang con */
.learn{
  display:inline-flex;align-items:center;gap:9px;margin-top:24px;color:var(--mint700);
  font-size:15.5px;font-weight:700;text-decoration:none;transition:gap .2s,color .2s;
}
.learn:hover{gap:13px;color:var(--mint-ink)}
.learn svg{width:16px;height:16px}

/* ============ trang pháp lý (/privacy, /terms) ============
   Hai ngôn ngữ nằm SẴN trong markup, nút VI/EN chỉ ẩn/hiện — không nhét cả bộ luật vào
   bảng STR như trang bán hàng: văn bản dài đầy dấu " và ', một chỗ escape sai là chết
   cả bảng STR và nút đổi ngôn ngữ ngừng chạy (im lặng, nhìn ảnh không thấy). */
[data-lang][hidden]{display:none}

.legal{position:relative;z-index:2;max-width:820px;margin:0 auto;padding:0 24px 96px}
.legal .meta{
  background:var(--surface-muted);border:1px solid var(--line);border-radius:16px;
  padding:18px 22px;margin-bottom:38px;font-size:14.5px;line-height:1.75;color:var(--dim);
}
.legal .meta b{color:var(--ink)}
.legal h2{
  font-size:22px;letter-spacing:-.02em;color:var(--mint-ink);margin:44px 0 14px;
  padding-top:26px;border-top:1px solid var(--line-soft);
}
.legal h2:first-of-type{border-top:0;padding-top:0;margin-top:0}
.legal h3{font-size:17px;color:var(--ink);margin:26px 0 10px}
.legal p{color:var(--dim);font-size:15.5px;line-height:1.75;margin:0 0 14px}
.legal ul,.legal ol{color:var(--dim);font-size:15.5px;line-height:1.75;margin:0 0 14px;padding-left:22px}
.legal li{margin-bottom:7px}
.legal b,.legal strong{color:var(--ink);font-weight:700}
.legal a{color:var(--mint700);font-weight:600}
.legal code{
  background:var(--surface-muted);border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;font-size:13.5px;color:var(--ink);
}

/* bảng "thu gì – để làm gì – giữ bao lâu": phải cuộn ngang được trên điện thoại,
   không được đẩy giãn cả trang */
.legal .tablewrap{overflow-x:auto;margin:0 0 18px;border:1px solid var(--line);border-radius:14px}
.legal table{border-collapse:collapse;width:100%;min-width:560px;font-size:14.5px}
.legal th,.legal td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line-soft);vertical-align:top}
.legal th{background:var(--surface-muted);color:var(--ink);font-weight:700;white-space:nowrap}
.legal tr:last-child td{border-bottom:0}
.legal td{color:var(--dim);line-height:1.6}

/* khối nhấn: cam kết không log / hộp liên hệ */
.legal .box{
  background:var(--surface);border:1px solid var(--mint300);border-left:3px solid var(--mint);
  border-radius:16px;padding:20px 24px;margin:0 0 22px;box-shadow:var(--sh-sm);
}
.legal .box.warn{border-color:var(--line);border-left-color:var(--amber-line)}
.legal .box p:last-child{margin-bottom:0}